All-metal vibration absorber "hollow pebble" (amvahp) (versions) and method of its production

FIELD: machine building.

SUBSTANCE: group of inventions relates to machine building. A vibration absorber comprises a hollow elastic hysteretic element from metal rubber wire material and fastening parts fixed in its central holes by shaped restriction washers and nuts. According to first version the fastening parts are made as two bolts with one of the bolts being fitted by a through central hole. According to the second version - as a bolt and a bush with a through threaded hole and a flange. A stud is screwed into the threaded hole of the bush. According to the third version - as two such bushes with studs screwed into them. The vibration absorber as per the second version is additionally reinforced by a harness of straight wire bundle braided with a wire spiral stretched with constant interval. The vibration absorber production method consists in the following. The fastening parts are installed on a closed and sealed cloth bag closely filled by sand. A globe-shaped workpiece is formed by winding of the stretched wire spiral. An elastic hysteretic element is produced by pressing in radial directions first and then in the axial direction. The bolts are fastened. A hole is made in the cloth bag and the sand is removed. The cloth is removed, or burnt, or left in the vibration absorber. The studs are screwed into the bushes and fixed.

EFFECT: improved elastic hysteretic properties at cyclic compression and simplified assembly process.

17 cl, 18 dwg

 

The invention relates to vibration isolators, working in the open space, radiation, corrosive environments, high ambient temperature (up to 500C).

Known vibration isolators of the type of the corporate governance ("double reinforced bell") (Lazutkin Century, the Improvement of the structures and methods of calculation of vibration isolators based wire Volnovaha material / Century A. Antipov, A. L. Ryabkov. - Samara: Samara state University of railway engineering. 2008. - 200 C.), currently used for the suspension of the devices installed on the spacecraft.

These vibration isolators are made in the form of two bell-shaped elements - "bells", manufactured by pressing from the wire material Mr (- metal), reinforced with a wire harness, wire wrapped stretched coil installed at each other foundations, rigidly fastened on the periphery of the joining of the steel wire. The bells on the anchor bolts on one of the bolts may be secured shockproof cushion of the Mr material. For bolts installed profiled restrictive washers and nuts.

The disadvantage of these isolators is the biggest challenge in the development of the automated manufacturing. Currently, the manufacture of these vibration isolators spent a large amount of hand the ore. The disadvantages of this insulator should be considered and the complexity of its design.

Also known construction of insulator type DK (double bell). The design of this insulator differs from the previous one only by the fact that his "bells" are made of a material MP, not reinforced with a wire harness. The disadvantages of this absorber are: small tensile strength, lower load-carrying capacity of the insulator with the same dimensions than the insulator of the corporate governance, a large amount of manual labor required in the manufacture of insulator.

Also known construction of insulator DCM (double bell modified, see the same book), which in the design of insulator entered helical compression springs - two conical springs, located on the outside and inside of each bell attached to the top of the cone bolt, to which the vibration absorber is attached to the device or substrate. The base of the conical spring is not fixed and freely rely: outer conical spring on the bell, and internal - shockproof washer from the Mr material. This vibration absorber has a much higher carrying capacity than the vibration absorber of the corporate governance.

The disadvantages of this insulator are: a very big difference between his performance on atie and stretching, because of the conical spring in it only work in compression, and that the fabrication and Assembly of insulator are made with great expenditure of manual labor, which greatly increases the cost of insulator. These operations primarily relates to the reinforcement of the bells of the wire harness and the stitching of the bells.

Vibration absorber DK technical entity closest to the proposed and adopted for the prototype.

The construction of all-metal vibration isolators, allowing the manufacture and Assembly of insulator sharp decrease in the amount of manual labor (exclusive in their manufacture and Assembly of the most time-consuming operations to be performed manually) can quickly recoup the invested costs and to expand and gain market their sales.

Therefore, the task of creation of insulator ZITH, which in its manufacture and Assembly eliminated the most time-consuming manual operations, with good progesterone properties under cyclic compression.

Abbreviation CITG stands for "all-metal vibration absorber type hollow pebble". This name type of insulator is chosen because it progesteronic element (UGE) for external shaped like a pebble from the beach.

The problem is solved in that a metal fibrisol the tor CITG, containing progesteronic element made of wire of Mr material, two bolts fixed in the Central hole using profile washers-limiters and nuts, characterized in that it progesteronic element is made integral nizheprilagaemuyu way in the form of a hollow body in cross-sections perpendicular to the axis of the insulator, having the form of circular rings, and radial sections of the form elliptic or oval rings with constant or variable thickness, and in one of the bolts made the Central hole.

The fabrication of this insulator can be fully automated, and when larger series, the price of this insulator will be low and it may be quite acceptable for use in General engineering, various types of household appliances.

In the proposed insulator, and may use other UGE with similar geometric shapes.

So, for example, offers a vibration absorber CITG, characterized in that it progesteronic element is designed in the form of two hollow truncated cones, large grounds smoothly paired with a hollow cylinder with the formation of small circular horizontal flange or without it, with the Central hole in the lower base of each cone.

Although this vibration absorber and has the worst external VI is, than the previous one, but for making it UGE can be used constructively simpler molds with long lifetime.

In addition, with the aim of ensuring the possibility of extracting a cloth bag (see below) from the internal cavity of the insulator instead of a bolt with a hole in Progesteronum element is fixed to the sleeve with the screw hole and the flange, recessed in the body upregulating element, and a height slightly smaller hole height upregulating element in which it is attached, and into the threaded hole of the sleeve threaded stud on which you installed profiled washer-limiter and screwed nut, Contrada the pin from unscrewing.

The presence of low sleeve with the screw hole provides easy access through to the cloth bag and removed from the internal cavity of the UGE of insulator.

For the same purpose the outer surface of the sleeve is made conical with a smaller cone diameter at the flange.

The fulfillment of the sleeve prevents it from falling inside the UGE when removing a cloth bag.

In addition, instead of the second bolt on Progesteronum element similarly fixed sleeve with flange with screwed in her pin using profiled washer-limiter and nuts.

The availability of the TLD the sleeves also facilitates removing the cloth bag through the holes in them.

To increase the strength of insulator his progesteronic element is reinforced by the harness beam direct wire wound wire wound, stretched with a constant step, the values of which are selected from a range of steps equal to the diameter of the wire, to step equal to its diameter, and other parameters of this spiral are the same as those of the spirals are made of wire material, and a layer of reinforcing harness formed by the proposed method, and is located either inside upregulating element, or its outer surface.

The tensile strength of the proposed vibration isolators can be no less than that of insulator DKA.

To increase the tensile strength of the vibration damper in the circumferential direction over a layer of reinforcing cord is wound with an angular step in the meridional direction, is wound with a pitch of the reinforcing layer of the loom in the direction parallel upregulating element, and on top of this layer is wound one or more layers of stretched spiral with parameters the same as in spirals of Mr material upregulating element.

The strength of the insulator can be no less than that of the insulator of the corporate governance, the most durable of vibration isolators series DK.

In the case of manufacturing the insulator nizheprilagaemuyu pic is the means and reinforcing harness short length (for example, length is up to two meters) operation making it UGE can also be automated.

These structures vibration isolators and technology of their production is much easier known vibration isolators series DK (DK, DKA, the corporate governance not only because they UGE made whole and for their manufacture does not require labor-intensive manual operations of punching holes in the bells under the stitching and the stitching itself, but also because the proposed vibration isolators reinforced harness one UGE (not two, as vibration isolators DKA and corporate governance), and the way the reinforcement UGE much easier (see below).

Note also, that the heads of the bolts, or the bushing flange and the head of the bolt, the proposed vibration isolators are recessed in the body UGE, which ensures at the same altitude dimensions as vibration isolators series DK, greater stroke of insulator.

To increase the bearing capacity of the proposed vibration isolators on them outside upregulating element has two helical compression springs having a cylindrical and a conical part, woven from one, three or more wires, cylindrical parts with tension vincenne with each other, and the conical part attached to progesterona element by the same bolts which vibration absorber is attached to wibrosaurus the th object and the support, with the help of elastic washers and nuts, or one spring is fixed with a bolt, the elastic washer and nut, and the other with studs, washers, elastic washers and nuts, and the height of the sleeve, which wrapped stiletto executed such that the conical spring is centered on the sleeve, and the geometric shape of the outer surface upregulating element approximately replicates the geometry of the springs after tightening the nuts.

Note that the use of stranded springs (three or more) improves the dissipative properties of the proposed vibration isolators.

To ensure the reliability of connection of the springs with one another, eliminating the possibility of partial or total unscrewing at the time due to the weakening of the attachment of the springs to progesterona element spring swiney so that the first coil of each spring acts of Vincennes part of the springs, and its diameter is plastically reduced compression in radial directions so that the mutual uncoupling of springs is only possible when plastic deformation of these coils.

In addition, with the aim of improving oprahfication characteristics (UFH) of the proposed vibration isolators compression spring is designed in such a way that after insertion of springs each other between the ends upregulating element and return ends of the conical portions of the springs remain ZAZ is ture, the magnitude of the spring parameters are selected in such a way that when setting vibroisolating object to without vibration isolators are installed on the bolts or bolt and stud, spring washers and nuts these gaps are completely filled, or left some magnitude of these gaps, which are fully available for fastening with elastic washers and nuts of insulator on the pole and vibroisolating object on the vibration damper.

In cases where it is undesirable large increase srednetehnicheskoy rigidity of the insulator due to the production of compression springs, vibration absorber set of springs with high ductility, and the parameters of the springs are selected so that when installing vibroisolating object on the vibration isolators are completely or partially unloaded progesteronic element from the weight force vibroisolating object falling on the vibration absorber.

The vibration isolators are unloaded from the weight force vibroisolating object attributable to the vibration absorber, significantly expands the range of deformations UGE, where the processes of loading (loading, unloading) occur without "tails" (the "tail" here refers to the range of deformations (large deformations) of the boot process, in which with increasing deformation increases dramatically srednetehnicheskoe stiffness Ugai reduces its coefficient of dispersion), and improve UFH of insulator.

In addition, with the aim of significantly reducing the resonant frequency of the system vibration isolators - vibrotherapy object on the bolt or stud installed another conical compression spring, and both springs mounted on Progesteronum element by means of a bolt, elastic washers and nuts or with studs, washers, elastic washers and nuts, and the height of the sleeve, which is screwed into the stud, is made such that both springs are centered on it, and a larger base for more conical springs are made with two reference coils lying in the same plane on the upper surface of which is made of microsky, evenly spaced around the circumference, and a spring secured at the base with a Central threaded hole petals, bent on supporting the coils, and matumi" them microsky, and in the workplace vibration absorber is attached to the support by means of a screw, screwed into the base, and the elastic washer and the boss grounds with a large radial preload can be secured shockproof cushion of the Mr material.

Additional conical spring consistently included in the elastic system of insulator, which reduced its srednetehnicheskoe stiffness and, hence, the resonant frequency of the system vibration isolators - vibrotherapy object is.

"Indentation" prevent vibration absorber against rotation relative to the base around its axis.

The presence shockproof cushion of Mr material improves shockproof characteristic of the vibration damper.

A known method of manufacturing UGE wire nonwoven Mr (see and.with. 183174 the USSR. A method of manufacturing a non-woven material Mr of metal wires / A. M. Soifer, B. N. Buzicky, C. A. Pershin. - Publ. 1966, bull. No. 13), containing shaping the workpiece from the wire spiral, stretched to step equal to the diameter of the spiral, and manufacturing UGE cold pressed billet.

This way the technical essence is the closest to the proposed and adopted for the prototype.

We propose a method of manufacture of insulator CITG containing manufacturing upregulating element of insulator by cold pressing of the workpiece formed from a wire helix, stretched to step equal to the diameter of the spiral, characterized in that a sealed cloth bag, tightly Packed sand and globe-shaped with the diameter determined from the condition VIII=V, where VIII - the volume of a sphere, VRR- the volume of the internal cavity upregulating element of insulator, diametrically opposed and aligned the heads, install the two mounting bolts, one of which with a Central hole is a tie, primitivum them stretched a wire spiral and, continuing to wrap the stretched spiral form spherical billet winding the required number of layers of this spiral, and the spiral winding carried out in such a way that in one of the contact layers of the coils of the winding are arranged in planes parallel to the profile plane, and the other of the contact layers of the coils of the winding are arranged in planes parallel to the frontal plane, made progesteronic element of insulator pressing first mainly in radial directions, and then mainly in the axial direction, and fix it bolts by using a shaped washers-limiters and nuts, through the Central through hole in one of the bolts to make the holes in the cloth bag and pour out from the insulator sand, then, if the diameter of the hole in the bolt, cloth shell is removed, if not, burn or leave it in the vibration damper.

With this method of winding in the adjacent layers to the plane of the spiral coils are arranged at an angle of about 90 to each other. This ensures good adhesion of coils with each other in the material UGE.

In order to facilitate extraction of the empty cloth bag from the internal cavity of the UGE of insulator on a cloth bag filled with sand, diam is Central oppositely and coaxially install the bolt and nut with a Central threaded hole and the flange, and primativo them stretched a wire spiral, screw it into the plug technological rod, spherical form of the workpiece, and made progesteronic element, technological remove the rod through a threaded hole in the sleeve to make the holes in the cloth bag and pour out from the insulator sand, then through the hole fabric shell is removed, screwed the pin into the sleeve, mounted on the stud and bolt washers-limiters and fix them with nuts.

It is also proposed a method of manufacturing a vibration isolators CITG, characterized in that progesteronic element diametrically oppositely and coaxially install two bushings with flanges, each of which is wrapped technological core.

Removing the cloth bag from the UGE in this case facilitated, as in this case, the bag through aligned holes in the sleeve partially popped out and then removed completely.

In addition, it is proposed a method of manufacturing a vibration isolators CITG, characterized in that the spherical workpiece formed from a stretched spiral wound with corner step coverage over the arc of the bolts harness formed from a bundle of straight wires, twisted spiral, stretched with a constant step, the values of which are selected from a range of steps equal to the diameter of the e wire, to step equal to its diameter, with the other parameters the same as in spirals, of which the formed spherical workpiece, then layer on top of the tow is wound one or more layers of spirals with the same parameters as the spherical workpiece, and these layers are wound so that in the entire volume of the workpiece layers of the winding parallel to the frontal plane, alternated with layers of winding parallel to the profile plane.

It is also proposed a method of manufacturing a vibration isolators CITG, characterized in that the top layer of reinforcing cord is wound with an angular step in the meridional direction, is wound with a pitch of the reinforcing layer of the loom in the direction parallel upregulating element, and on top of this layer is wound one or more layers of stretched spiral with parameters the same as in spirals spherical workpiece.

To improve shockproof characteristics of insulator is proposed a method of manufacture of insulator CITG, characterized in that on the cloth bag is placed directly only bolt with a hole or bushing, wrapped their desired number of layers of stretched spiral and then they install the second bolt.

After pressing these layers form the shockproof strip of material MP.

In addition, predlagaetsya manufacture of insulator CITG, characterized in that progesteronic element of insulator wear two helical compression springs, woven from one, three or more wires having a cylindrical and a conical portion, the cylindrical parts with tension on the coils of the springs sbencivu them with each other, and the conical parts put them on Progesteronum element, each through bolt elastic washer and nut, or a single spring attached using the bolt elastic washer and nut, and the other with the help of studs screwed into the sleeve, washers, elastic washers and nuts.

In order to discharge the UGE of insulator from the action of the weight force vibroisolating object attributable to the vibration absorber, compression springs are made in such a way that after fitting them on progesteronic element and coupled between the ends upregulating element and return ends of the springs there is a gap of such size that when attaching the springs on Progesteronum element in case of a complete selection of these gaps is generated axial force acting on the springs and fasteners of the insulator is equal to the force of the weight vibroisolating object attributable to the vibration absorber, in this state, the vibration absorber deliver to the customer, when mounting it in the workplace nuts and elastic washers are dismantled from the insulator, vibration absorber without these details ustanavli who have to support and establish vibrotherapy object, then the vibration absorber on a support and vibrotherapy object it fixed by elastic washers and nuts.

In addition, to ensure the reliability of connection of the springs with one another, eliminating the possibility of partial or total unscrewing at the time due to the weakening of the attachment of the springs to progesterona element spring sbencivu so that the first coil of each spring acts of Vincennes part of the spring, then it plastically deform reduce the diameter of a coil compression in radial directions so that the mutual uncoupling of springs is only possible when plastic deformation of these coils.

It is also proposed a method of manufacturing the insulator CITG, characterized in that the bolt or stud optionally install another conical compression spring, which has a greater base is made with two reference coils lying in the same plane on the upper surface of which is made of microsky, evenly spaced around the circumference, and the two conical springs fixed on Progesteronum element by means of a bolt elastic washer and nuts or studs, washers, elastic washers and nuts on the lug surfaces with a high radial tension set shockproof cushion, and an additional spring clip at the base of the petals, which are bent on supporting the coils, the con is look for more spring cerite-top - "matumi" petals in microsky on the base turns of the spring, and in the workplace vibration absorber is fixed to the support by means of a screw screwed into a threaded hole in the boss of the base, and an elastic washer.

The proposed design of vibration isolators CITG and methods for their manufacture are illustrated by figures. In the figures illustrating the proposed design of insulator, UGE shown in finished form after pressing. Moreover, the elements of the structure UGE on the figures shown conventionally. In the figures illustrating the proposed methods, the elements of the structure of the workpiece shown conventionally. On the figures vibrotherapy object and bearing are shown as thin solid line, as "the situation" on the Assembly drawing.

In Fig.1 shows a longitudinal section of insulator CITG.

In Fig.2 depicts a top view of the insulator CITG.

In Fig.3 shows the UGE of insulator CITG made in the form of two hollow truncated cones, large grounds smoothly paired with a hollow cylinder with the formation of small circular horizontal flange.

In Fig.4 shows a longitudinal section of insulator CITG with the bushing and pin.

In Fig.5 shows a longitudinal section of insulator CITG with two bushings and studs.

In Fig.6 shows a longitudinal section of insulator CITG with UGE, reinforced with a layer of wire harness

In Fig.7 shows a longitudinal section of insulator CITG with UGE, reinforced with two layers of wire harness.

In Fig.8 shows a longitudinal section of insulator CITG with compression springs, vincensini with each other.

In Fig.9 shows a longitudinal section of insulator CITG with the bushing and the pin, in which the first coils of the springs are from the zone of their screwing and plastically deformirovny so that they are adjacent to the conical parts of the UGE.

In Fig.10 shows a longitudinal section of insulator CITG with additional compression spring, consistently included in the elastic scheme of insulator, and showing its attachment to a support.

In Fig.11 shows a longitudinal section of insulator CITG with additional compression spring mount it to the UGE nut, stud, washer elastic washer and nut and shock-resistant cushion is fixed on the base.

In Fig.12 shows spherical workpiece from the stretched wire helix with mounting bolts, to fasten a cloth bag with sand. In Fig. in the context of spiral wound parallel to the profile plane, depicted by a white circle, but a spiral wound parallel to the frontal plane, in black.

In Fig.13 depicts a spherical workpiece from the stretched wire helix with bolt and nut that fasten to the fabric of the bag with sand is m, with screwed into the sleeve technological core, shown as thin solid line. In Fig. in the context of spiral wound parallel to the profile plane, as shown by a white circle.

In Fig.14 shows the reinforcement of spherical workpieces one layer provolochnogo harness wrapped stretched wire spiral.

In Fig.15 shows the formation of a reinforcing braid.

In Fig.16 depicts a spherical reinforcement preform two layers provolochnogo harness.

In Fig.17 shows a longitudinal section of insulator CITG (Fig.9) with nailene on the elastic bolts washers and nuts before putting on him vibroisolating object. In Fig. vibrotherapy object shown symbolically elevated above the spring.

In Fig.18 shows a longitudinal section of insulator CITG (Fig.8), mounted on a support attached to it vibroisolating object.

Not all the proposed variants of the method of manufacture of insulator CITG illustrated figures. Therefore, to avoid a large number of references to the figures in the description of the different variants of the method, the same elements are marked by one position and description of this element and the reference of the figure, where it is depicted, given only the first reference to this element.

We offer all-metal vibration absorber CITG (see Fig. and 2) contains UGE 1, made of wire of Mr material, made of whole nizheprilagaemuyu way in the form of a hollow body, in cross-sections perpendicular to the axis of the insulator, having the form of circular rings, and radial sections of the form elliptic or oval rings with constant or variable thickness, the bolts 2 and 3, mounted in the Central hole UGE 1 using profile washers-limiter 4 and nuts 5. The bolt 3 is made the Central hole 6.

In addition, it is proposed vibration absorber CITG (see Fig.3), characterized in that it UGE 7 made in the form of two hollow truncated cones 8, large grounds smoothly mated with the hollow cylinder 9 with the formation of small circular horizontal flange 10 or without (not shown), with a Central hole 11 in the lower base of each cone.

It is also proposed vibration absorber CITG (see Fig.4), which instead of the bolt 3 in the UGE 1 is fixed to the sleeve 12 with the screw hole 13 and the flange 14, recessed in the body UGE, and a height slightly smaller hole height UGE in which it is mounted. In the screw hole 13 of the sleeve 12 is screwed into the stud 15, which is installed profiled washer-restrictor 16 and screwed the nut 17, Contrada stud 15 from unscrewing.

The outer surface of the sleeve 12 may be made conical with a smaller cone diameter at the flange 14 (the e is shown).

It is also proposed vibration absorber CITG (see Fig.5), which instead of a bolt 3 Progesteronum element 1, similarly secured to the second sleeve 12 with a flange 14 with screwed in her stud 15 with profiled washer-limiter 16 and nuts 17.

In addition, it is proposed vibration absorber CITG (see Fig.6), the design of which differs in that it UGE 18 reinforced bundle 19 of beam direct wire 20, wire wrapped spiral 21 (see Fig.14 and 15), stretched with a constant step, the values of which are selected from a range of steps equal to the diameter of the wire, to step equal to its diameter, and other parameters of this spiral are the same as those of the coils 22 are made of wire material, and a layer 23 of reinforcing harness 19, formed by the proposed method (see Fig.14) located either inside UGE 18 (see Fig.6), or is located at the outer surface 24, or produces its outer surface.

Features vibration absorber CITG (see Fig.7), which on top of the layer 23 of reinforcing harness 19, wound with an angular step in the meridional direction, is wound with a pitch layer 25 reinforcing harness 19 in the direction parallel UGE 26, and on top of this layer is wound one or more layers 27 a stretched helix 22 (see Fig.16).

In addition, it is proposed vibration absorber CITG (see Fig.8) with two JV the General compression springs 28, mounted to the outside of the UGE. Springs 28 are cylindrical 29 and 30 of the conical part and a retinue of one, three or more wires. Cylindrical portions 29 with tension springs 28 swiney with each other, and the conical part 30, each spring attached to UGE the same bolts 2 and 3, by which the vibration absorber is attached to vibroisolation object 31 and the support 32 (see Fig.18, although in Fig. shows a variant UGE with the sleeve 12, with the help of this figure it is easy to imagine fastening vibroisolating object 31 to the insulator and the insulator to the support 32 by bolts 2 and 3), and each bolt to UGE (see Fig.8) is attached elastic washer 33 and a nut 5. The geometric shape of the outer surface 24 UGE repeats the geometry of the springs 28 after tightening nuts 5.

In the case of UGE sleeve 12 (see Fig.9) its height is made such that the spring 28 is centered on the sleeve, and the spring 28 (see Fig.18) of the conical portions 30 are attached to the UGE, vibroisolation object 31 and the support 32. One spring 28 secured by means of bolt 2, the elastic washer 33 and a nut 5, and the other with the help of studs 15, the washer 34, the elastic washers 35 and nuts 17.

Spring 28 (see Fig.9) can be swiney so that the first coil 36 of each spring 28 acts of Vincennes part 37 of the springs 28 and plastic deformation and its diameter is reduced so that the mutual uncoupling of springs is only possible with plastic de the information these turns.

In addition, the proposed insulator CITG compression springs 28 can be designed in such a way that after insertion of the springs 28 to each other (see Fig.17) between the ends 38 UGE and mating ends 39 of the conical portions 30 of the spring 28 are gaps 40, the size of which and the spring parameters are selected in such a way that when setting vibroisolating object 31 on the vibration isolators gaps 40 is selected, or there is some value in these gaps, which are fully available for fixing the insulator (Fig.8) with spring washers 33 and nuts 5 (see Fig.18), a y-insulator (Fig.9) when docked vibroisolating object 31 on the vibration damper using elastic washer 33 and a nut 5 and the insulator on the pole 32 with elastic washers 35 and nuts 17(see Fig.17 and 18).

If UGE must be unloaded from the weight force vibroisolating object attributable to the vibration absorber, and allowed only a small increase srednetehnicheskoy rigidity of the vibration damper, the vibration absorber set of springs 28 with the big give, and the parameters of the springs are selected so that when installing vibroisolating object 31 on the vibration isolators are completely or partially unloaded UGE from this force and the gap 40 is selected.

In addition, features all-metal vibration absorber CITG (see Fig.10, in which the bolt 3 is additionally installed another conical compression spring 41 and the two conical springs 28 and 41 mounted on UGE by means of a bolt 3, the elastic washer 33 and a nut 5. More base 42 additional conical spring 41 is performed with two reference coils 43, lying in the same plane. On the upper surface of these coils are made of microsky 44, evenly spaced around the circumference. The spring 41 is fixed to the base 45 with a Central threaded hole 46 petals 47, bent on supporting the coils 43, and "matumi" 48 in microsky 44. Workplace vibration absorber is attached to the support 32 by means of a screw 49 screwed into the base 45, and the elastic washer 50, and vibrotherapy object 31 is attached to the vibration damper using elastic washer 33 and a nut 5.

In the case of UGE sleeve 12 (see Fig.11) its height is made such that the spring 28 and the additional spring 41 are centered on the sleeve, and the spring 28 and 41 are attached to the UGE with studs 15, the washer 34, the elastic washers 35 and nuts 17. Fixing of insulator (Fig.11) to vibroisolation object 31 and the anvil 32 is similar to the mounting of the insulator (Fig.10). The vibration isolators (Fig.10 and Fig.11) on the boss 51 of the base 45 (see Fig.11) with a large radial preload can be secured shockproof cushion 52 of the Mr material.

The proposed method of manufacture of insulator CITG (see Phi is .12) is which is hermetically sealed cloth bag 53, tightly Packed sand and globe-shaped with the diameter determined from the condition VW=VRRwhere VW- the volume of a sphere, VRR- the volume of the internal cavity of the UGE of insulator, diametrically opposed and aligned heads 54 install the bolts 2 and 3 (see Fig.12 and 13). Primitivum their wire coil 22, stretched to step equal to the diameter of the spiral. Form a spherical workpiece 55 (see Fig.12) winding the required number of layers 27 of this spiral, and the spiral winding 22 carried out in such a way that in one of the contact layers 27 turns of winding 56 are arranged in planes parallel to the profile plane, and the other of the contact layers 27 turns of winding 56 are arranged in planes parallel to the frontal plane. Make UGE 1 of insulator (see Fig.1) cold pressed spherical workpiece 55 first mainly in radial directions, and then mainly in the axial direction. Fix it bolts 2 and 3 using shaped washers-limiter 4 and nuts 5. Through the Central through hole 6 in the bolt 3 make a hole in a cloth bag 53 (see Fig.1 and 12) and poured from the insulator sand. Then, if the diameter of the hole in the bolt is empty cloth bag 53 is removed, if not, burn or leave it is vibroisolation.

In addition, it is proposed a method of manufacturing a vibration isolators CITG (see Fig.13), characterized in that a cloth bag 53, filled with sand, diametrically oppositely and coaxially installed with the head 54 of the bolt 2 and the flange 14 of the sleeve 12 and primativo them stretched the wire coil 22. Screw it into the plug technological rod 57. Form a spherical workpiece 55 and made UGE 1 vibration damper (Fig.4). Remove technological rod 57. Through the threaded hole 13 in the sleeve 12 to make the holes in the cloth bag 53 and pour out from the insulator sand. Then through the hole 13 remove the cloth bag 53. Screwed pin 15 (see Fig.4) in the sleeve 12. Mounted on the bolt 2 and the stud 15 washer-stops 4 and 16 and secured them with nuts 5 and 17.

It is also proposed a method of manufacturing a vibration isolators CITG (see Fig.5), characterized in that progesteronic element 1 are diametrically opposed and coaxially install two sleeve 12 with flanges 14, each of which is wrapped technological rod 57.

In addition, it is proposed a method of manufacturing a vibration isolators CITG (see Fig.14), characterized in that the spherical workpiece 55, formed from the stretched spiral 22, is wound with corner step coverage over the arc of the bolts 2 and 3 (see Fig.6 and 14) harness 19 (see Fig.15) formed from the direct beam p is avalok 20, twisted spiral 21, stretched with a constant step, the values of which are selected from a range of steps equal to the diameter of the wire, to step equal to its diameter. Then on top of the layer 23 harness 19 similarly wound one or more layers 27 of the spirals 22. Moreover, these layers 27 is wound so that in the whole volume of the final workpiece 58 layers 27 and winding parallel to the frontal plane, alternated with layers 27 and winding parallel to the profile plane, and made UGE 18 (see Fig.6).

Also features a method of manufacturing a vibration isolators CITG (see Fig. 16), characterized in that the top layer 23 a reinforcing harness 19, wound with an angular step in the meridional direction, is wound with a pitch layer 25 reinforcing harness 19 in the direction parallel UGE 26 (see Fig.7), and on top of this layer with the step is wound one or more layers 27 a stretched helix 22, ensuring also that the finally formed on the workpiece 59 layers 27 and winding parallel to the frontal plane, alternated with layers 27 and winding parallel to the profile plane.

It is also proposed a method of manufacturing the insulator CITG, characterized in that on the cloth bag is placed directly only bolt with a hole or bushing, wrapped their desired number of layers Rastan is the spiral and then they install a second bolt (not shown).

In addition, we offer a method of manufacture of insulator CITG (see Fig.8), characterized in that the UGE of insulator wear two helical compression springs 28, woven from one, three or more wires having a cylindrical 29 and 30 of the conical part. Cylindrical portions 29 with tension on the coils of the springs 28 their sbencivu with each other, and the conical portions 30 put them on UGE, each by means of a bolt 2 or 3, the elastic washer 33 and a nut 5.

Also features a method of manufacturing the insulator CITG (see Fig.17), characterized in that the compression spring 28 is made so that after fitting them on UGE and screwing between the ends 38 UGE and mating ends 39 of the spring 28 has a gap 40 is of such size that when attaching the springs to the UGE in case of a complete selection of these gaps is generated axial force acting on the springs and fasteners of the insulator is equal to the force of the weight vibroisolating object falling on the vibration absorber. In this state, the vibration absorber deliver to the customer. When mounting it in the workplace nut 5, the elastic washer 33, a washer 34, the resilient washer 35 and a nut 17 is removed from the insulator. Vibration absorber without these parts are mounted on a support 32 and on a set vibrotherapy object 31. Vibrotherapy object 31 (see Fig.17 and 18) fixed on the vibration damper using elastic washers is 33 and nuts 5. Then the vibration absorber is fixed on a support 32 with the elastic washers 35 and nuts 17.

In addition, the spring 28 (see Fig.9) sbencivu so that the first coil 36 of each spring 28 acts of Vincennes part 37 of the spring 28. Then plastically deform reduce the diameter of the coil 36 by compression in the radial directions so that the mutual uncoupling of springs 28 is only possible when plastic deformation of these coils.

It is also proposed a method of manufacturing a vibration isolators CITG (see Fig.10 and 11), characterized in that the bolt 3 or stud 15 additionally install another conical compression spring 41, which has a greater base 42 is made with two reference coils 43, lying in one plane, and on the upper surfaces of these coils are made of microsky 44, evenly spaced around the circumference. Both of the conical spring 28 and 41 are secured on the UGE by means of a bolt 3, the elastic washer 33 and nut 5 or (see Fig.17) studs 15, the washer 34, the elastic washers 35 and nuts 17. The boss 51 of the base 45 with a large radial preload set shockproof cushion 52. Additional spring 41 is secured on the base 45 petals 47, which are bent on supporting the coils 43. ) Additional spring 41 by cerite-top "matumi" 48 petals 47 in microsky 44 on the supporting coils 43 of the spring 41. Workplace vibration absorber attached to the support 32 by means of screws 49, warn is that in the base 45, and the elastic washer 50.

Manufacture and Assembly of the proposed vibration isolators CITG clear from the description of the proposed methods for their manufacture.

The proposed vibration isolators CITG spatial loading. They work on all kinds of loads - periodic, shock, random, etc. acting on all six degrees of freedom.

They are highly dissipative. The kinetic energy of the dynamic impact scatters them through dry friction forces on mutual slippage of coils of the Mr material, the slippage of coils in the wire reinforcing harness and mutual slippage of these wires.

When applying the three-wire compression spring when their deformation also dissipates some energy.

At the same UFH and strength, as vibration isolators of the type DK, the proposed vibration isolators CITG much easier their design and manufacturing techniques. As mentioned above, the technological process can be fully automated, and they can be produced in larger series. If this market price may be substantially reduced and will be acceptable not only for those areas where currently applied to the vibration isolators of the type DK, but in many other areas of technology, our is to including household appliances.

1. All-metal vibration absorber made according to the method of p. 10 containing progesteronic element of the wire material-metal (MP), and fasteners attached at its Central hole using profile washers-limiters and nuts, characterized in that it progesteronic element is made solid in the form of a hollow body, which is made so that in cross-sections perpendicular to the axis of the insulator, has the shape of a round ring, and radial sections of the form elliptic or oval rings with constant or variable thickness, or in the form of two hollow truncated cones, large grounds smoothly paired with a hollow cylinder with the formation of small circular horizontal flange or without it, with the Central hole in the lower base of each cone, and fasteners made in the form of two bolts, one bolt is made through the Central hole, or in the form of a bolt and a sleeve with a through screw hole and the flange, recessed in the body upregulating element, and a height slightly smaller hole height upregulating element in which it is attached, and into the threaded hole of the sleeve threaded stud on which you installed profiled washer-limiter and screwed nut, contradance from unscrewing, or two such bushings with threaded studs in them, similarly secured in the Central hole upregulating element.

2. All-metal vibration absorber made according to the method of p. 11 containing progesteronic element of the wire material MP and fasteners attached at its Central hole using profile washers-limiters and nuts, characterized in that it progesteronic element is made solid in the form of a hollow body, which is made so that in cross-sections perpendicular to the axis of the insulator, has the shape of a round ring, and radial sections of the form elliptic or oval rings with constant or variable thickness, or in the form of two hollow truncated cones, large grounds smoothly paired with a hollow cylinder with the formation of small circular horizontal flange or without it, with the Central hole in the lower base of each cone and reinforced harness from the direct beam wire wound wire wound, stretched with a constant step, the values of which are selected from a range of steps equal to the diameter of the wire, to step equal to its diameter, and other parameters of this spiral are the same as those of the spirals are made of wire material, and a layer of reinforcing harness is either NR the three upregulating element, or its outer surface, and a fastener made in the form of two bolts, one bolt is made through the Central hole or in the form of a bolt and a sleeve with a through screw hole and the flange, recessed in the body upregulating element and a height slightly smaller hole height upregulating element in which it is attached, and into the threaded hole of the sleeve threaded stud on which you installed profiled washer-limiter and screwed nut, Contrada the pin from unscrewing, or two such bushings with threaded studs in them, similarly secured in the Central hole upregulating element.

3. All-metal vibration absorber according to any one of paragraphs.1 or 2, characterized in that the outer surface of the sleeve is made conical with a smaller cone diameter at the flange.

4. All-metal vibration absorber under item 3, characterized in that the top layer of reinforcing cord is wound with an angular step in the meridional direction, is wound a layer of reinforcing harness in the direction parallel upregulating element, and on top of this layer is wound one or more layers of stretched spiral with parameters the same as the material MP upregulating element.

5. All-metal vibration absorber under item 4, otlichalis the same time, that it outside upregulating element has two helical compression springs having a cylindrical and a conical part, woven from one, three or more wires, cylindrical parts with tension vincenne with each other, and the conical part attached to progesterona element by the same bolts which vibration absorber is attached to the vibration of the object and the support, with the help of elastic washers and nuts, or one spring is fixed with a bolt, the elastic washer and nut, and the other with studs, washers, elastic washers and nuts, and the height of the sleeve, which wrapped stud, performed such that the conical spring is centered on the sleeve, and the geometric shape of the outer surface upregulating element approximately replicates the geometry of the springs after tightening the nuts.

6. All-metal vibration absorber under item 5, characterized in that the spring swiney so that the first coil of each spring acts of Vincennes part of the spring and its diameter is reduced by compression in the radial directions so that the mutual uncoupling of springs is only possible when plastic deformation of these coils.

7. All-metal vibration absorber under item 6, characterized in that a compression spring is designed in such a way that after insertion of springs each other between the ends upregulating e the ment and return ends of the conical portions of the springs are gaps, the magnitude of the spring parameters are selected in such a way that when setting vibroisolating object to without vibration isolators are installed on the bolts or bolt and stud, spring washers and nuts these gaps are completely filled, or left some magnitude of these gaps, which are fully available for fastening with elastic washers and nuts of insulator on the pole and vibroisolating object on the insulator

8. All-metal vibration absorber under item 7, characterized in that the vibration absorber set of springs with high ductility, and the parameters of the springs are selected so that when installing vibroisolating object on the vibration isolators are completely or partially unloaded progesteronic element from the weight force vibroisolating object falling on the vibration absorber.

9. All-metal vibration absorber under item 8, characterized in that the bolt or stud installed another conical compression spring and both springs mounted on Progesteronum element by means of a bolt, elastic washers and nuts or with studs, washers, elastic washers and nuts, and the height of the sleeve, which is screwed into the stud, is made such that both springs are centered on it, and a larger base for more conical springs are made with two reference coils lie in the same plane, on the upper surface of which is made of microsky, evenly spaced around the circumference, and a spring secured at the base with a Central threaded hole petals, bent on supporting the coils, and matumi" them microsky, and in the workplace vibration absorber is attached to the support by means of a screw, screwed into the base, and the elastic washer and the boss grounds with a large radial preload can be secured shockproof cushion material MP.

10. The method of manufacture of insulator containing manufacturing upregulating element of insulator by cold pressing of the workpiece formed from a wire helix, stretched to step equal to the diameter of the spiral, characterized in that a sealed cloth bag, tightly Packed sand and globe-shaped with the diameter determined from the condition VIII=V, where VIII - the volume of a ball, V volume of the internal cavity upregulating element of insulator, diametrically opposed and aligned the heads, install the two mounting bolts, and bolt and nut with a Central threaded hole and the flange, or two bushings with flanges and primativo them stretched a wire spiral, screw in bushing technological rods and continuing to wrap the stretched spiral form spherical billet winding the required number of layers e is th a spiral, moreover, the winding of the spiral carried out in such a way that in one of the contact layers of the coils of the winding are arranged in planes parallel to the profile plane, and the other of the contact layers of the coils of the winding are arranged in planes parallel to the frontal plane, made progesteronic element of insulator pressing first mainly in radial directions, and then mainly in the axial direction, technological remove the rods, if any, and fix it bolts by using a shaped washers-limiters and nuts, through the Central through hole in one of the bolts make a hole in a cloth bag, and in the case of fixing on Progesteronum element one or two plugs a hole in a cloth bag make it through the screw hole of one of the bushings, and pour out from the insulator sand, then, if the diameter of the hole in the bolt or sleeve, fabric shell is removed, if not, burn or leave it in the vibration damper, screwed stud in the bushing, install washers on them-limiters and fix them with nuts.

11. The method of manufacture of insulator under item 10, characterized in that the spherical workpiece formed from a stretched spiral wound with corner step coverage over the arc of bolts or bushings harness, form the integration of the direct beam wires, twisted spiral, stretched with a constant step, the values of which are selected from a range of steps equal to the diameter of the wire, to step equal to its diameter, with the other parameters, like the spirals of which is formed a spherical workpiece, then layer on top of the tow is wound one or more layers of spirals with the same parameters as the spirals of the spherical workpiece, and these layers are wound so that in the entire volume of the workpiece layers of the winding parallel to the frontal plane, alternated with layers of winding parallel to the profile plane.

12. A method of manufacturing a vibration isolators on p. 11, characterized in that the top layer of reinforcing cord is wound with an angular step in the meridional direction, is wound with a pitch of the reinforcing layer of the loom in the direction parallel upregulating element, and on top of this layer is wound one or more layers of stretched spiral with parameters the same as in spirals spherical workpiece.

13. The method of manufacture of insulator under item 12, characterized in that on the cloth bag is placed directly only bolt with a hole or bushing, wrapped their desired number of layers of stretched spiral and then they install a second bolt or the second sleeve.

14. The method of manufacture of insulator under item 13, the ex is different, however, that progesteronic element of insulator wear two helical compression springs, woven from one, three or more wires having a cylindrical and a conical portion, the cylindrical parts with tension on the coils of the springs sbencivu them with each other, and the conical parts put them on Progesteronum element, each through bolt elastic washer and nut, or a single spring attached using the bolt elastic washer and nut, and the other with the help of studs screwed into the sleeve, washers, elastic washers and nuts, or both springs are fixed by pins screwed into bushings, washers, spring washers and nuts.

15. The method of manufacture of insulator under item 14, characterized in that a compression spring is made so that after fitting them on progesteronic element and coupled between the ends upregulating element and return ends of the springs there is a gap of such size that when attaching the springs on Progesteronum element in case of a complete selection of these gaps is generated axial force acting on the springs and fasteners of the insulator is equal to the force of the weight vibroisolating object attributable to the vibration absorber, in this state, the vibration absorber deliver to the customer, when mounting it in the workplace nuts and elastic washers are dismantled from the insulator, vibration absorber without these on the hoist mounted on a support and establish vibrotherapy object, then the vibration absorber on a support and vibrotherapy object it fixed by elastic washers and nuts.

16. The method of manufacture of insulator under item 15, characterized in that the spring sbencivu so that the first coil of each spring acts of Vincennes part of the spring, then it plastically deform reduce the diameter of a coil compression in radial directions so that the mutual uncoupling of springs is only possible when plastic deformation of these coils.

17. The method of manufacture of insulator under item 16, characterized in that the bolt or stud optionally install another conical compression spring, which has a greater base is made with two reference coils lying in the same plane on the upper surface of which is made of microsky, evenly spaced around the circumference, and the two conical springs fixed on Progesteronum element by means of a bolt, elastic washers and nuts or studs, washers, elastic washers and nuts on the lug surfaces with a high radial tension set shockproof cushion, and an additional spring clip at the base of the petals, which are bent on supporting the coils, ) additional spring cerite-top "matumi" petals in microsky on the base turns of the spring, and in the workplace vibration absorber is fixed to the support by means of a screw, is screwed whom in the threaded hole in the boss of the base, and elastic washers.



 

Same patents:

FIELD: machine building.

SUBSTANCE: proposed bumper comprises gauze resilient element locked by top and bottom plates on the base. The named base is composed by the plate with mounting holes. Lower plate is connected with the base. Top pressure plate is connected with the central ring covered by aligned ring jointed to the base. Between the lower end of the piston and bottom of the bush the polyurethane elastomer is located.

EFFECT: efficient damping in resonance mode, simplified design and assembly.

4 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: vibration absorber consists of a casing and a resilient element from elastomer interacting with a unit. The housing is made as a sleeve resting on the upper end of resilient element, and the collars connecting by means of peripheral recess the housing with the base. The profile of lateral surfaces of elastomer is formed hyperbolic as a bar of equal resistance with a constant stiffness in axial and transversal directions. The gauze damper base is composed by the plate with mounting holes. Lower plate is connected with the base. Upper pressure plate is connected with central ring clamped by coaxial ring connected with the base. Between the lower end of the piston and bottom of the bush the polyurethane elastomer is located.

EFFECT: more efficient damping in resonance mode, simplified design and assembly.

4 cl, 1 dwg

FIELD: machine building.

SUBSTANCE: group of inventions relates to machine building. Bumper comprises fasteners and cylindrical or conical three-strand compression spring. Compression spring with pull over its coils is rigidly secured in wire shell of rubber-metal. Spring thrust coils are free. Shell cross-section can be round, oval, rectangular with rounded or non-rounded angles. Sizes of spring coil cross-section in said shell and spring lead are set to allow a required clearance between adjacent coils. Proposed method comprises the steps that follow. Workpiece is formed by winding the lengths of expanded spiral on central core and pre-compressed thereat in radial directions. Formed workpiece is withdrawn from central core, fitted on spring spiral and finally compressed in special mould to required shell parameters.

EFFECT: simplified design and process, higher load-bearing capacity and strength.

11 cl, 12 dwg

FIELD: machine building.

SUBSTANCE: proposed system comprises platform resting on two vibroisolators and damping element arranged there under. One vibroisolator is arranged above the platform free end and secured at the lever. Two vibroisolators are secured at the lever opposite ends relative to platform free end. Damping element is secured at the platform opposite end. Every said vibroisolator comprises the case rigidly connected with the base composed by round centre plate. Damper is secured to case base with the help of upper pressure plate. Said damper comprises gauze elastic element to be locked by upper and lower plates to rest on the base. Said base is composed by the plate with mounting holes. Lower plate is connected with the base. Upper pressure plate is connected with central ring clamped by coaxial ring connected with the base.

EFFECT: efficient damping in resonance mode, simplified design and assembly.

3 dwg

FIELD: machine building.

SUBSTANCE: vibration absorber comprises two tapered resilient bushes from wire non-woven web of rubber-metal material. Small concentric collars are made on the casing, cap and flange of a central bush and are used to align the tapered bushes and provide for radial preloading. Axial preloading in the tapered bushes is created by tightening the lower slotted nut up to the stop of the cap against the coupler screw collar and of the face of the central bush against the cap. The vibration absorber casing is fitted by a flange by which the vibration absorber is connected to a base plate. A unit with its vibration to be absorbed is mounted on the cap and fixed by a washer, the second slotted nut and a split pin. When free, the outer diameter of the tapered bushes is equal to the inner diameter of pilot collars of the casing, cap and flange of the central bush. Diameter of the centre opening of the tapered bushes is equal to the outer diameter of the inner pilot collars of the cap and flange of the central bush. When free, the cone angle of the tapered bushes is determined according to the formula. The height of pilot collars is chosen so that alignment of bushes as per the collars is provided immediately before the creation of preloads on contact surfaces of tapered bushes when they are free.

EFFECT: simplification of assembly procedure for a vibration absorber without its performance characteristics being deteriorated.

3 dwg

FIELD: machine building.

SUBSTANCE: invention refers to machine building industry. Vibration isolator includes a housing with a rectangular flange, two elastic sleeves from wire material of metal rubber, which are arranged in it, a cover, a tightening element and fastening parts. A cylindrical wall of the housing projects on both sides of its base to the height of the sleeve in free state. A vibration isolator bottom is attached to the housing flange by screws. The tightening element is made in the form of a hollow cylinder with a round flange. A flat supporting platform with central and threaded holes is made on outer surface of the flange. The tightening element is arranged in central holes of elastic sleeves and the cover. Specified value of axial preload of elastic sleeves is created by tightening of a round nut that is screwed on a threaded end of the tightening element and under which elastic and lock washers are installed. An unloading spiral compression spring with high flexibility is arranged inside the slot of the tightening element. The spring is fixed along the round thread in a support made at the vibration isolator bottom. The cover is screwed from above onto the spring along round thread. Between the cover and the cylinder bottom there arranged is a support the ball stop of which is borne against the spring cover, and its outer surface is borne against the cylinder bottom of the tightening element.

EFFECT: achieving increase in carrying capacity and service life of a vibration isolator.

8 cl, 11 dwg

FIELD: machine building.

SUBSTANCE: invention refers to machine building industry. Vibration isolator includes a housing with a flange, two elastic sleeves from wire material of metal rubber, which are arranged in it with radial and axial preload, a cover and fastening parts. In a central hole of sleeves and the cover there arranged is a tightening screw with threaded ends, in which there are holes for cotter pins. A cylindrical wall of the housing projects on both sides of its base to the height of the sleeve in free state. Specified value of axial preload of elastic sleeves is created by tightening of a lower slotted nut, under which elastic washers are installed. Sharp edges of parts are rounded with radii. Parameters of elastic sleeves are determined so that at simultaneous action of weight force of the object and the force allowable in operation and determined by dynamic overload, which are accounted for by the vibration isolator, dynamic loading processes of the vibration isolator cannot interfere with "tails" of its field of elastic hysteresis loops.

EFFECT: achieving increase in carrying capacity and service life of a vibration isolator.

3 cl, 4 dwg

FIELD: machine building.

SUBSTANCE: invention refers to machine building industry. A vibration isolator includes a housing, two conical elastic sleeves arranged in it and made from wire material of metal rubber, a cover, a tightening element arranged in the central hole of sleeves and the cover and fastening parts. The housing is arranged inside a compression spring with a radial gap. The spring is supported from the housing flange and the vibration isolator bottom and rigidly fixed on them by means of covers composed of two semi-rings. A cylindrical wall of the housing projects on both sides of its conical base. The tightening element is made in the form of a hollow cylinder with a round conical flange. A flat supporting platform with central and threaded holes is made on outer surface of the flange. The tightening element is arranged in central holes of elastic sleeves. The conical cover is aligned on a smooth cylindrical part of the tightening element. An external support surface of the cover is flat. A round nut, under which elastic and lock washers are installed, is screwed on a threaded end of the tightening element. An unloading spiral compression spring with high flexibility is arranged inside the tightening element. A shock-proof cushion made from metal rubber material is fixed at the bottom of the tightening element.

EFFECT: improving vibration isolating properties and durability, and simplifying vibration isolator maintenance.

2 cl, 5 dwg

FIELD: machine building.

SUBSTANCE: vibration isolator includes housing with flange for its attachment to support, elastic bushings made from wire material of metal rubber, central bushing and attachment parts. Central bushing is made in the form of hollow cylinder-buffer consisting of cylindrical and conical parts. Inside cylinder-buffer there located is one or two compression springs that, in non-loaded state of vibration isolator, press the buffer with low force to upper shock-proof pad built in the cover. Cover is fixed on housing with screws and nuts. Damping cassettes are installed on each other in housing. Each cassette consists of housing, cover put on housing, elastic hysteresis element made in the form of bushing and composed of individual sectors-pushers of ring with central conical hole. Cover and bottom of cassette housing serve as guides at radial working offsets of pushers. The second shock-proof pad is fixed at vibration isolator housing bottom. Spacer plate that presses cassettes to each other is installed between upper cassette and upper pad.

EFFECT: improving vibration isolating properties and durability, and simplifying vibration isolator maintenance.

6 cl, 10 dwg

Absorbing apparatus // 2473440

FIELD: transport.

SUBSTANCE: invention relates to friction absorbing units of freight car automatic couplers. Absorbing apparatus comprises barrel-like casing with boss on bottom inner side, pressure cone, two friction wedges with bearing plate, pairs of moving and fixed plates, all arranged in said casing symmetrically with its inner walls. Besides, absorbing apparatus comprises retaining-return device composed of a stack of polymer resilient elements arranged together with bearing plate and wedges between pressure cone and casing bottom and tightened up by bolt passed through central hole. Every said polymer resilient element represents variable-cross-section body of revolution with stepped hole along axis of revolution. Section with maximum OD is located between two different-size end of said body to divide outer lateral surface of the latter into two adjacent parts. Distance from said section to smaller end makes 0.30-0.55 of that to larger end.

EFFECT: absorption capacity increased for classes T2, T3.

8 cl, 8 dwg

FIELD: machine building.

SUBSTANCE: vibration isolator includes a base and elastic elements. The base is made in the form of vertical cylinder with fasteners located perpendicularly to the cylinder axis in its middle part. One of the fasteners is the bolt with washer, and another one, opposite located and connected with the bolt - thread sleeve with washer, which is a bearing element at a slant location of vibration isolated unit. In the cylinder top the elastic element from elastomer, for example rubber or polyurethane, and in the cylinder bottom - mesh elastic element is located.

EFFECT: efficient damping in resonance mode, simplified design and assembly.

4 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: group of inventions relates to machine building. Bumper comprises fasteners and cylindrical or conical three-strand compression spring. Compression spring with pull over its coils is rigidly secured in wire shell of rubber-metal. Spring thrust coils are free. Shell cross-section can be round, oval, rectangular with rounded or non-rounded angles. Sizes of spring coil cross-section in said shell and spring lead are set to allow a required clearance between adjacent coils. Proposed method comprises the steps that follow. Workpiece is formed by winding the lengths of expanded spiral on central core and pre-compressed thereat in radial directions. Formed workpiece is withdrawn from central core, fitted on spring spiral and finally compressed in special mould to required shell parameters.

EFFECT: simplified design and process, higher load-bearing capacity and strength.

11 cl, 12 dwg

FIELD: machine building.

SUBSTANCE: vibration absorber comprises two tapered resilient bushes from wire non-woven web of rubber-metal material. Small concentric collars are made on the casing, cap and flange of a central bush and are used to align the tapered bushes and provide for radial preloading. Axial preloading in the tapered bushes is created by tightening the lower slotted nut up to the stop of the cap against the coupler screw collar and of the face of the central bush against the cap. The vibration absorber casing is fitted by a flange by which the vibration absorber is connected to a base plate. A unit with its vibration to be absorbed is mounted on the cap and fixed by a washer, the second slotted nut and a split pin. When free, the outer diameter of the tapered bushes is equal to the inner diameter of pilot collars of the casing, cap and flange of the central bush. Diameter of the centre opening of the tapered bushes is equal to the outer diameter of the inner pilot collars of the cap and flange of the central bush. When free, the cone angle of the tapered bushes is determined according to the formula. The height of pilot collars is chosen so that alignment of bushes as per the collars is provided immediately before the creation of preloads on contact surfaces of tapered bushes when they are free.

EFFECT: simplification of assembly procedure for a vibration absorber without its performance characteristics being deteriorated.

3 dwg

FIELD: machine building.

SUBSTANCE: invention relates to machine building. Proposed bumper comprises gauze resilient element locked by top and bottom plates to rest on the base. The latter is composed of a plate with mounting holes. Bottom plate is secured to the base. Top pressure plate is connected with central ring covered by aligned ring jointed to the base.

EFFECT: higher efficiency in resonance mode, simplified design and assembly.

4 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: invention refers to machine building industry. Vibration isolator includes a housing with a rectangular flange, two elastic sleeves from wire material of metal rubber, which are arranged in it, a cover, a tightening element and fastening parts. A cylindrical wall of the housing projects on both sides of its base to the height of the sleeve in free state. A vibration isolator bottom is attached to the housing flange by screws. The tightening element is made in the form of a hollow cylinder with a round flange. A flat supporting platform with central and threaded holes is made on outer surface of the flange. The tightening element is arranged in central holes of elastic sleeves and the cover. Specified value of axial preload of elastic sleeves is created by tightening of a round nut that is screwed on a threaded end of the tightening element and under which elastic and lock washers are installed. An unloading spiral compression spring with high flexibility is arranged inside the slot of the tightening element. The spring is fixed along the round thread in a support made at the vibration isolator bottom. The cover is screwed from above onto the spring along round thread. Between the cover and the cylinder bottom there arranged is a support the ball stop of which is borne against the spring cover, and its outer surface is borne against the cylinder bottom of the tightening element.

EFFECT: achieving increase in carrying capacity and service life of a vibration isolator.

8 cl, 11 dwg

FIELD: machine building.

SUBSTANCE: invention refers to machine building industry. Vibration isolator includes a housing with a flange, two elastic sleeves from wire material of metal rubber, which are arranged in it with radial and axial preload, a cover and fastening parts. In a central hole of sleeves and the cover there arranged is a tightening screw with threaded ends, in which there are holes for cotter pins. A cylindrical wall of the housing projects on both sides of its base to the height of the sleeve in free state. Specified value of axial preload of elastic sleeves is created by tightening of a lower slotted nut, under which elastic washers are installed. Sharp edges of parts are rounded with radii. Parameters of elastic sleeves are determined so that at simultaneous action of weight force of the object and the force allowable in operation and determined by dynamic overload, which are accounted for by the vibration isolator, dynamic loading processes of the vibration isolator cannot interfere with "tails" of its field of elastic hysteresis loops.

EFFECT: achieving increase in carrying capacity and service life of a vibration isolator.

3 cl, 4 dwg

FIELD: machine building.

SUBSTANCE: invention refers to machine building industry. A vibration isolator includes a housing, two conical elastic sleeves arranged in it and made from wire material of metal rubber, a cover, a tightening element arranged in the central hole of sleeves and the cover and fastening parts. The housing is arranged inside a compression spring with a radial gap. The spring is supported from the housing flange and the vibration isolator bottom and rigidly fixed on them by means of covers composed of two semi-rings. A cylindrical wall of the housing projects on both sides of its conical base. The tightening element is made in the form of a hollow cylinder with a round conical flange. A flat supporting platform with central and threaded holes is made on outer surface of the flange. The tightening element is arranged in central holes of elastic sleeves. The conical cover is aligned on a smooth cylindrical part of the tightening element. An external support surface of the cover is flat. A round nut, under which elastic and lock washers are installed, is screwed on a threaded end of the tightening element. An unloading spiral compression spring with high flexibility is arranged inside the tightening element. A shock-proof cushion made from metal rubber material is fixed at the bottom of the tightening element.

EFFECT: improving vibration isolating properties and durability, and simplifying vibration isolator maintenance.

2 cl, 5 dwg

FIELD: machine building.

SUBSTANCE: vibration isolator includes housing with flange for its attachment to support, elastic bushings made from wire material of metal rubber, central bushing and attachment parts. Central bushing is made in the form of hollow cylinder-buffer consisting of cylindrical and conical parts. Inside cylinder-buffer there located is one or two compression springs that, in non-loaded state of vibration isolator, press the buffer with low force to upper shock-proof pad built in the cover. Cover is fixed on housing with screws and nuts. Damping cassettes are installed on each other in housing. Each cassette consists of housing, cover put on housing, elastic hysteresis element made in the form of bushing and composed of individual sectors-pushers of ring with central conical hole. Cover and bottom of cassette housing serve as guides at radial working offsets of pushers. The second shock-proof pad is fixed at vibration isolator housing bottom. Spacer plate that presses cassettes to each other is installed between upper cassette and upper pad.

EFFECT: improving vibration isolating properties and durability, and simplifying vibration isolator maintenance.

6 cl, 10 dwg

FIELD: machine building.

SUBSTANCE: device includes a base, and guide and shock-absorbing devices. A stock is rigidly fixed in the bottom of a cylindrical sleeve with formation of a tight annular cavity. Bottom of the cylindrical sleeve is fixed in the sleeve rigidly attached to the base of a protected object. A spring is located in the annular cavity and supported with its lower end face from the bottom and with its upper end from the piston. The piston is made in the form of a disk and located with a throttling gap relative to the stock. A cover plate that is movable relative to the stock is located in upper part of the stock. Cover plate consists of an annular flange with a seal and a sleeve rigidly attached to the flange and enveloping the outer surface of a cylindrical sleeve through the seal. Spring is located coaxially to the stock and its upper end face is supported from the cover plate and its lower end face is supported from the piston. A supporting element of the vibroisolated object is fixed on the cover plate. On the sleeve flange there rigidly fixed is an elastically damping device consisting of lower and upper support flanges of a plate type. Elastically damping element made from twisted wire of thread waste type is located between flanges. Upper threaded end of the stock is connected to a threaded hole in upper supporting flange. In the elastically damping device there is a through central hole for passage of the stock.

EFFECT: higher vibration isolation efficiency.

1 dwg

FIELD: construction.

SUBSTANCE: flexible structural connection element comprises a body made of twisted and compressed steel strands. The curve of deformation dependence on stress in a twisted and compressed steel strand has a slope inclined zone A and a steep inclined zone B, and the specified body is used on the section in the steep inclined zone: B of the specified curve. The connection element is used for placement between adjacent parts of the structure for transfer of vertical or horizontal loads. The building module comprises the specified connection element.

EFFECT: possibility to use a connection element under high static and dynamic loads.

15 cl, 9 dwg

FIELD: machine building.

SUBSTANCE: disk flexible element is made as two flat flexible internal and external rings coaxially arranged. The rings are positioned in parallel horizontal planes and are rigidly interconnected by means of two flexible elements. The flexible elements are radially arranged in horizontal plane at angle within ranges of 1080 in vertical plane. Cavities formed with the flexible rings and flexible radially arranged elements are filled with an elastic damping net element.

EFFECT: raised efficiency of vibration isolation in resonance mode and simplification of design and assembly.

4 cl, 2 dwg

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