Buffer for overhead crane

FIELD: machine building.

SUBSTANCE: inventions group relates to machine building. The buffer contains a cylinder and installed in it one or two compression springs. The tail is made cone and is inserted in the cone counter-holes created by the pushers of the damping cartridges. The damping cartridges are installed in the buffer device back to back. Each damper cartridge contains body, cover screwed on the body and locked against loosening by the radially installed lock-screws. In the buffer under first option inside each cartridge body the multi-layer multispan corrugated ring packages are installed, they are made out of steel polished corrugated tapes "corrugation in corrugation". Between the packages the rings cut into sectors are installed, on them the multi-layer packages rest as "corrugation top to corrugation top". The pushers are also made in form of sectors. Butts between the ring sectors, pusher sectors are uniformly distributed over the circle and are located under peaks of corrugations cavities of the packages. In the buffer under the second option inside each cartridge body the elastohysteretic element is installed, it is made out of wire nonwoven fabric MR (metal rubber) made either in form of thick wall cylinder or separate sectors. On the elastohysteretic element the pusher-ring is installed, it is made out of sectors. In the elastohysteretic element is made in form of the separate sectors then the pusher sector is installed on the each element sector. Between the buffer device cover rigidly connected with casing and cartridges at spacer is installed. The buffer cylindrical part goes outside via the guide hole in the cover. End part of the buffer has boring, in which using the nut the cone billet is fixed, the billet is made out of wire material MR or tough rubber or tough polymer.

EFFECT: increased damping properties, decreasing of kickback and simplification of the buffer design.

4 cl, 9 dwg

 

The invention relates to the field of mechanical engineering, devices, absorbing the blows.

A known design of a spring buffer, mounted on overhead cranes (see the book " Bridge cranes General purpose ", the authors A. P. Shabanov, A., Lysakov. M: mechanical engineering, 1980, pp. 201-202), containing a cylinder located within one or two helical compression springs, which rest on the bottom of the cylinder, and on them rests the buffer, and between the shank of the buffer and the bottom of the cylinder has a length greater than the stroke of the buffer at impact, and the buffer is from the cylinder on the course and is directed at its offset into the output hole of the cylinder.

The disadvantage of this design of the buffer is that upon impact, for example, when two cranes kinetic impact energy is not dissipated in the buffer and the duration of the first phase of impact, when the impact force is growing, is small, which leads to shock with a large amplitude shock forces, and the impact of such buffers is great and sharp.

Also known construction spring-friction and hydraulic buffers (see the same book, page 202, 203).

The buffer spring-friction type consists of a housing, an outer pipe, the stop of the inner pipe, the outer and inner rings special profile, return spring and bracket.

From the inner three rings of the bore eccentric and cut in the most thinly settled parts. The rings have a double conical surface, which inner ring based on mating surfaces of the outer rings. The angle of the forming cones more friction angle.

Under the action of a spring from these rings axial loads on the surface of the contact rings having a large distance forces, resulting in the outer rings are stretched and the inner compressed. If this rings slide into each other and the length of the spring decreases and the kinetic impact energy is spent on the potential energy of the compression spring and the dry friction forces at the contact surfaces of the rings, which in these buffers is 60-70% of the kinetic energy of impact. The impact of these buffers are not large.

The lack of spring-friction buffers is the complexity of their design and manufacturing techniques.

Hydraulic buffer consists of a body made integral whole piston and rod, the spindle, return spring, accelerator spring, tip, and seal.

Upon impact, the tip of the compressible when the accelerator spring drives the piston rod. The fluid flows through gradually decreasing the annular gap that is formed between the hole in the bottom of the piston and spindle variable cross-section (the spindle has a tapered portion with a diameter increasing toward the place of attachment in qi is Indra).

The kinetic energy of impact in this buffer is spent on the potential energy of compressed upon impact and return of the accelerator springs and hydraulic losses during the flow of fluid in the clearance between the piston and the spindle.

When piston reversal losses sharply decrease as the gap between the piston and the spindle is rapidly increasing. This can be attributed to shortcomings of the hydraulic buffer.

Spring buffers are used when the speed of the crane to 70 m/min, and a spring-friction and hydraulic up to 160 m/min

The design of the spring buffer is closest to the technical nature of the proposed buffer and used as a prototype.

The task of creating the design of the buffer crane, scattering kinetic impact energy, providing a large duration of the first phase of the impact and effective while still offering the same reliability and ease of operation as the prototype, more simple in construction and manufacturing techniques than known designs spring-friction buffers.

The problem is solved in that the buffer crane, containing cylinder, located in one or two compression springs, which relies on the buffer, and between the shank of the buffer and the bottom of the cylinder has a length greater than the stroke of the buffer, and the maximum deformation of the springs is avna go characterized in that the shank of the buffer is made conical, with no gaps or with a small preload is included in the response conical holes formed by the pushers damping tapes, they may be one, two, or more, mounted in the housing of the buffer device close to each other, and each of the damping cartridge consists of a body, cover, screw on the threads on the housing and secured against unscrewing the radial locking screws, inside the housing with a slight interference fit on the tops of the corrugations, but sufficient to maintain the position of the parts cassettes accidental impacts to the buffer inserted: one, two or more multi-layered, multi, pleated, ring package, recruited from steel, hardened, polished, corrugated ribbons "bumps in the corrugation between the packages, if there are two or more, are cut on a sector of a ring, on which the multilayer packages rely on "top of the flute to the top of the flute", and the joints between the ends of each corrugated tape each package is distributed evenly in the circumferential direction on the tops of the corrugations so that the adjacent contact strip joints deployed at 180°, between the ends of the tape at the junction there is a guaranteed gap, minimal in size, but in such a way that at full extension of the corrugations of the package there was no overlap of ends of g is Pirovano tape at each other, and the initial curvature of the corrugations fo is selected so that at full extension packages not happened plastic deformation belts, side clearances between the mating ends of the sectors of the rings made the minimum possible, but such that when the reverse course of the buffer was not rasklinivanie sectors of these rings, and the pushers, based on the corrugations at the inner package, not hanging out with this from the buffer, these connected in series packages form progesteronic element of each cartridge, and the pushers are also made in the form of sectors, the size of which is chosen so that in the free state of the cartridge under the action of radial forces, operating from the packages, they form a continuous ring with a tapered Central hole with a cone angle equal to the angle of the cone shank buffer, and each package is still a little tightness on the tops of the corrugations of approximately (0.05 to 0.1)f0and the joints between sectors rings, sectors of the pusher ravnomerno distributed over the circumference and are located below the tops of the troughs of the corrugations of the packet, and the length of the tapered shank of the buffer is made such that in the state, unloaded a shock load from the end of the tape, find the first in the direction of the strike, there was a conical section with a length sufficient to fully straighten corrugated the package, or with the length of the straightening of the corrugations so that the residual curvature of the corrugations of each package was not more than 0.02-0.05 mm, and under the end that the last cartridge based on the case, there would be small speaker cone area of the buffer and between the lid of the buffer device, rigidly connected to the housing, and a cassette is inserted, the spacer, the thickness of which is chosen so as to ensure a reliable fixation of the cassettes in the buffer device, and a cylindrical part of the buffer exits through the guide hole in the lid so that the distance from the end face of the nut, wrapped in a buffer to cover more than the maximum stroke of the buffer and at the end of the buffer is made of the bore in which this nut fixed conical disc, made of wire material MP, or hard rubber, or solid polymer.

The proposed design of the buffer device has a very high damping properties, several times larger than in the known constructions the spring-friction buffers.

The kinetic energy is dissipated due to dry friction forces on mutual slippage of the belts relative to each other and the contact surfaces of buildings cassettes and pushers, as well as due to the sliding buffer with dry friction relative to the pushers when e is moving at impact.

Due to this increased the duration of the first phase of the impact and, therefore, decreases the amplitude of the impact force and impact becomes smooth.

The presence of the elastic conical blanks from wire material MP or dense rubber or polymer increases the energy dissipated by the device when hit, and "extinguishes" the power of the sound of the blow.

In addition, to exclude possible hit and dropping the peaks of the corrugations of the packages in the joints between the sectors of the rings, as well as in the joints between the sectors of the pusher between packages and rings the first few packets whose total value of clearances in the joints in full extension of the corrugations of the packages exceeds about one third or one quarter of the pitch of the corrugations, the account numbers of the packets is from the axis of the buffer and between the package and the follower has one, two or more smooth, steel, polished tape the joints are evenly distributed around the circumference and adjacent smooth tape joints deployed at 180°, moreover, the junction of the smooth tape in contact with a corrugated, relative to the junction of the latter also deployed to 180°.

In addition, the proposed design of the buffer for cranes, which progesteronic element of each cartridge is made in the form of a thick-walled cylinder made of wire nonwoven MP by pressing zag is training in radial directions (see A. with. 183174 the USSR. A method of manufacturing a non-woven material MP of metal wires/ A. M. Soifer, B. N. Buzicky, C. A. Pershin. - Publ. 1966, bull. No. 13), and in the cover of the buffer is mounted shockproof cushion made of a material MP pressing the workpiece in the direction perpendicular to the working surface shockproof cushion.

The presence shockproof cushion softens the impact when the output buffer

Radial direction of pressing in the manufacture upregulating element of the cassette selected because, when pressing the coils of the spirals of the wire material lose stability and the plane of the main mass of coils placed at angles to the direction of the pressing force, little different from 90° and material shrinkage MP upregulating element when the operating time will be smallest when loading it in directions coincident with the direction of the pressing forces.

During long-term operation of the buffer device shrinkage progesterone elements cassettes in the radial direction can reach unacceptable values. In this case, you can do it two ways - replace all tapes are new, or replace the first direction of impact tape on the second, the second to the third, and so on, and the last on the last tape.

In addition, to increase the service life of the buffer b is fer is made of two rigidly connected by the threaded parts - the head part attached to it a disc of material MP and removable conical part.

In this case, set the buffer device includes a number of removable conical parts with the same angle of taper, but with gradually increasing with some pitch diameters of the bases.

Upon reaching unacceptable values shrinkage replace a removable conical part with the smallest diameter of the base in the following replaceable conical part with large diameters of the bases. As "production" tapes changed the conical part. When fully "develop" tapes they are replaced by new ones, and the last of the conical part of the change at first with the smallest diameters of the bases. Due to this, increases the service life of the buffer device

Material MP does not work on stretching. Therefore, to reduce circumferential tensile stresses progesterone elements cassettes to valid values are constructed of individual sectors, evenly spaced on a circle with gaps on the ends of the sectors, as unselectable in the free state of cassettes, and the maximum buffer offset in the direction of the shot, and each sector is pressed in the radial direction, and each sector upregulating element with small tightness wearing a sector of the pusher, in radial cross-section having a U-shape, and the size of the sector angle of the pusher is selected so as that free tapes the ends of the sectors of the pusher in contact with each other, and in each sector upregulating element created radial tension.

Leaving the free ends of the sectors upregulating element reduces circumferential tensile stresses in each sector of these elements and the contacting ends of the sectors of the pusher in a free state, the cassette provides resumerabbit cassette during transportation, storage, mounting it in the buffer unit and random influences.

The proposed design of the buffers are illustrated by the figures. Packages in the sections shown conventionally.

In Fig.1 shows a longitudinal section of the device.

In Fig.2 shows a section along a-a in Fig.1.

In Fig.3 shows the external element B in Fig.2.

In Fig.4 shows the extension element B in Fig.2 - option to smooth the tape between packages and rings and between the package and the plunger.

In Fig.5 shows a longitudinal section of a buffer device with progesterone elements tapes, made in the form of a hollow cylinder of wire material MP, shockproof cushion made from this material.

In Fig.6 shows a section along a-a in Fig.5.

In Fig.7 shows a longitudinal section of a buffer device with progesterone elements tapes, made in the form of individual p is x, evenly spaced around the circumference of the sectors of material MP with mounted sectors of the pusher with a U-shaped radial cross-section, buffer, collected from two parts - a head part and a replaceable conical part.

In Fig.8 shows a section along a-a in Fig.7.

In Fig.9 shows the cartridge in a free state, to build it into the device.

The proposed buffer device for cranes (see Fig.1) consists of a housing 1, made in the form of a stepped cylinder, made at the same time the whole base 2, to which the device is attached to the power frame of the crane (Fig. bridge crane not shown), buffer 3, the return spring 4 and 5, cap 6, is rigidly fixed to the body 1 by bolts 7, the nuts 8 and of quoted washers 9, tape 10, the distance of the strip 11, the elastic conical discs 12 of the wire material MP, or hard rubber, or polymer, of a nut 13 that secures the disc, and locking washers 14, Contrada nut 13.

The buffer 3 is made hollow and the return springs 4 and 5 are placed inside the buffer. He has a cylindrical portion 15 and a conical part 16. On the cylindrical part 15 is a collar 17, which flange rests against the cover 6 in the unloaded state of the buffer. The outer projecting part of the buffer 3 (together with the nut 13) is greater than the stroke of the buffer. The distance of the end face 18 of the buffer 3 from the bottom of the housing 1 is also more stroke buffer. The length of the tapered portion 16 of the buffer 3 is equal to the sum of: the total height of the cassette 10, the length of the conical section of the buffer is equal to its course, before the first cassette 10 (non cassettes are counted in the direction of the shot) and the length of the speaker on the other side of the cassette 10 of the plot buffer.

Each cassette 10 consists of a housing 19, is made in the form of a ring with angular cross-section, in which with a slight interference fit on the tops of the corrugations, but sufficient to maintain the position of the parts in the cassette when the random power impacts on the buffer installed in series connected multi-span, multi-layered, circular, corrugated packages 20, recruited from steel, hardened, polished, corrugated ribbons 21 "corrugation to corrugation", between which is inserted the ring 22, is cut on a sector 23 (see Fig.2), which are based packages 20 "top of the flute to the top of the flute".

The joints of corrugated ribbons 21 (see Fig.3) evenly in the circumferential direction are placed on the tops of the corrugations of the package 20. Moreover, the adjacent strips 21 they are deployed relative to each other by 180°. The gap 24 at the junction selected as low as possible, but such that when the reverse course of the buffer 3 has not occurred, the overlapping ends of the tape 21 at each other.

The gaps 25 between the return side ends of the adjacent sectors 23 are made as low as possible, but such that when the reverse course of the buffer 3 provide what was chivasa continuous contact of the conical part 16 buffer with 3 sectors 26 pushers 27, each of which rests the last inner package 20 (the reference numbers of the packages 20 are carried out in the radial direction towards the axis of the device).

The joints between the sectors 23 (see Fig.2, 3) evenly spaced around the circumference and placed at the centers of the troughs of the corrugations of the packages 20.

The plunger 27 is made in the form of a split ring and the dimensions of its constituent sectors 26 are designed so that in a free state before you installed the cartridge 10 into the buffer device, and is fully selected gaps between response side ends of the sectors 26 in each of the packages 20 was created a little tension about 0.1 f0that ensures the integrity of the plunger 27 and the cartridge 10 in the assembled state (the impossibility of falling out of parts of the assembled cartridge 10). Joints sectors 26 are also evenly distributed around the circumference and are positioned at the centers of the troughs of the corrugations.

Tapered Central hole 28 of the plunger 27 (see Fig.1) has a cone angle equal to the cone angle of the conical part 16 of the buffer 3. And the diameters of these holes is made so that in the unloaded state of the buffer device between the buffer 3 and the pushers 27 there was a little tension.

On the housing 19 of the cassette 10 screw cap 29, the locking parts of the cassette from moving along the axis of the buffer 3, and herself, locking screws 30 are fixed against unscrewing.

Setting the return springs 4 and 5 are selected in such a way to offset buffer 3 in the course of their revolutions sat down on each other and generated by this reaction force of the springs was enough to make a smooth reverse bias buffer 3, and the stored potential energy of the springs when compressed on the stroke buffer 3 and the deformation of multilayer packages 20 and the disc 12 together with the energy dissipated in the package 20, in contact with the buffer 3 surfaces of the plungers 27 and the conical disc 12, completely extinguished " the kinetic energy of the blow.

The angle of the cone portion 16 of the buffer 3 is selected in such a manner that axial displacement buffer 3, is equal to its move, all connected in series packages 20 upright completely or almost completely - each package 20 would remain a residual curvature is equal to 0,03 - 0,05 mm This eliminates the possibility of jamming buffer 3 at the end of its stroke with proper selection of the parameters of the springs 4 and 5.

It should be noted that the value of the initial curvature fo corrugated tape 21 is chosen from the condition that at full extension of the corrugations of the packages 20 in strips 21 avoid plastic deformation.

The number of series-connected packages 20 in a single cassette 10 is recommended to choose a possibly large, but structurally acceptable, so as to increase their number increases, the radial dimensions of the housing 1 (the height of the buffer the disorder).

It is recommended that at a given stroke buffer 3 try to choose the number of packets 20 so that the angle of the cone portion 16 of the buffer 3 was greater than the friction angle. This will provide additional safeguards to avoid the possibility of jamming of the buffer at the end of his turn.

The number of cassettes 10 in the buffer device is selected as the effective damping impact load acting on the buffer, but such that the axial dimensions of the device were structurally acceptable.

Its cylindrical part 15 of the buffer 3 is directed into the opening 31 in the cover 6.

The height H of the disc 12 made of a material MP, chosen so that the disc acts on the end face of the nut 13 on the value of L≤0,16 H. And other settings blank 12 is recommended to take the usual use of products from material MP: specific gravity material ingots g=0,025-0,03 N/cm3the wire diameter d=0.2 to 0.35 mm, the diameter of the spiral D=2-3,5 mm, pitch of the helix t=D.

The thickness of the spacer 11 is selected so that when the fixing cover 6 on the housing 1 of the cassette 10 still fixed in the housing 1. The spacer 11 may be made of soft metal, soft steel or aluminium.

Return springs 4 and 5 can be assembled from separate, series-connected, springs with different direction of the strand. In this case, between the individual springs which are movable abutment washers (Fig. is not shown. Cm. The book "Bridge cranes General purpose", page 202, Fig.7.34).

In addition, between the package 20 and the ring 22 (see Fig.4) the first few packets whose total value of clearances in the joints of the sectors 23 at the full extension of the corrugations of the packages exceeds about one third or one quarter of the pitch of the corrugations (account numbers of the packets in this case is from the axis of the buffer), and also between the package 20 and the plunger 27 has one, two or more smooth, steel, polished tape 32, the joints are evenly distributed around the circumference and adjacent smooth tape joints deployed at 180°, and the junction of the smooth tape in contact with a corrugated, relative to the junction of the latter also deployed to 180°.

In addition, the proposed design of the buffer for cranes, which progesteronic element 33 of each cartridge 34 (see Fig.5, 6) made in the form of a thick-walled cylinder made of wire, non-woven material MP by pressing the workpiece in the radial direction, and the cover 35, a buffer mounted shockproof cushion 36, made of a material MP pressing the workpiece in the direction perpendicular to the working surface shockproof cushion.

Material parameters MP for manufacturing upregulating element 33 and shockproof cushion 36 can be selected the same as DL is the manufacture of the disc 12.

The plunger 37 in this case is also made in the form of a split ring and the dimensions of its constituent sectors 38 are designed so that in a free state before you installed the cartridge 34 in the buffer device, and is fully selected gaps between response side ends of the sectors 38 in each of progesterone elements 33 have created a small radial tightness, which ensures the integrity of the follower 37 and the cassette 34 in the assembled state (the impossibility of falling out of parts of the assembled cartridge 34). Sector 38 is also evenly distributed around the circumference (see Fig.6). In the unloaded state of the buffer device, the buffer 3 (see Fig.5) flange 17 abuts against shockproof cushion 36, and between the mating ends of adjacent sectors 38 there is a gap 39 (see Fig.5), and in progesterone elements 33 created the required radial tension.

A gap 39 is desirable to choose such that when the maximum possible output buffer 3, this gap is not fully selected.

In addition, the buffer 40 (see Fig.7) may be made of two rigidly connected by the threaded parts - the head part 41 fixed to it a disc 12 of material MP and removable conical portion 42.

In this case, set the buffer device includes a number of removable conical parts with the same angle of taper, but with gradually increasing the certain step diameters of the bases. Upon reaching unacceptable values shrinkage progesterone elements 33 cassettes 34 replace a removable conical part with the smallest diameter of the base in the following replaceable conical part with large diameters of the bases.

In addition, progesterone elements 33 can be made of separate sectors 43 (see Fig.7, 8, 9), evenly spaced around the circumference with a gap 44 on the ends of the sectors 43, unselectable as in the free state of cassettes, and the maximum offset of the buffer 40 in the direction of impact, and each sector is pressed in the radial direction, and each sector 43 upregulating element with small tightness wearing a sector of 45 of the pusher 46, in radial cross-section having a U - shaped form (see Fig.7), and the size of the sector angle of 45 of the pusher 46 is selected so that in the free state of tapes the ends of the sectors of the pusher in contact with each other, and in each sector 43 upregulating element created radial tension.

As in the previous case, between the mating ends of adjacent sectors 45 assembled in the buffer device has a gap 39 (see Fig.8), the value of which is selected from the above-described conditions.

In the cover 29 of the cassette (see Fig.9) can be performed apertures 47 that is used to navorachivaya covers 29 on the housing 19 of the cassette.

The Assembly proposed the CSOs buffer device is as follows: in case 1 in the order marked on the caps 29 rooms are pre-assembled cartridge 10 (in order of decreasing the diameter of the hole 28 pushers 27 the direction of impact). Is installed in the housing 1 return spring 4. Going to the buffer device. Why in the buffer 3 set the disc 12 and secured by a nut 13, which in turn kantrida locking washer 14. In the buffer 3 is set to the second return spring 5 and the collected buffer is pushed to the risks on the conical part 16 of the buffer 3, the ends of the springs 4 and 5 hit single in the bottom of the buffer 3 is another in the bottom of the housing 1. Set on the cartridge 10, the spacer 11, the buffer 3 is put on the cover 6 and is fastened by the bolts 7, the nuts 8 and locking washers 9 to the housing 1. Moreover, the flange 17 of the buffer 3 rests in the assembled thus the buffer in the cover 6 with a small axial force.

Cassette 10 is collected in the following way: forged and hardened packages 20, the tape 21 which collected "bumps in the corrugation, and the joints of the tape 21 in the packages 20 are distributed as described above, is inserted into the housing 19 in ascending order kleimenova on the packages 20 rooms in the radial direction to the axis of the buffer device so that the tops of the corrugations in adjacent packages 20 was located against each other.

Between adjacent packages install split ring 22, recruited from the private sector 23 so that the gap 24 between sectors were approximately the same. Rings 22 and their components with ktora 23 is also set in the order marked on them the numbers.

Then install the plunger 27, the latter is set sector 26, a suction cone (removed chamfer on the lateral ends of the sector, on the figures, they are not shown, and the Catete chamfer is less than the thickness of the sector).

For which a special device to make this sector a pressing force in the direction of the shot. As a result, this sector 26 rises in an area reserved for it in the plunger 27 and the plunger is assembled in raspor without gaps, the peaks of the corrugations of the packages 20 created required a little tightness and formed a Central tapered bore 28.

Then on the housing 19 of the cassette 10 is screwed cap 29, which from unscrewing the fixed locking screws 30.

Thus collected cassette 10 is served in the Assembly buffer.

The Assembly buffer devices with cartridges progesterone elements of material MP and the cartridges are simple and in many ways similar to those described and not described here.

The proposed buffer device (buffer) works as follows. When hitting the buffer 3 when the clash of the cranes disc 12 begins to shrink and the buffer 3 is shifted in the axial direction. In this case, first, because of the good oprahfication characteristics ingots of MP, its maximum scattering coefficient is equal to ψmax=2,2-2,4 (see Eskin I. D. a Study on bennich oprahfication characteristics of dampers and absorbers of aircraft engines. The dissertation on competition of a scientific degree of candidate of technical Sciences. Kuibyshev, 1973) compared with rubber, where ψmax=0,8, "extinguished" the power of sound strike, secondly, the kinetic impact energy is spent on store of potential energy obtained by elastic compression of the return spring 4 and 5 and the elastic component of the deformation of the disc 12 and multi-layered, multi, ring, corrugated packages 20, compressible increasing radial load when the lower buffer 3, the conical part 16 in the pushers 27 (sectors pushers 26 27 this shift in the radial direction and compress the packages 20), and the energy dissipated by the mutual sliding with dry friction of coils bars 12, mutual sliding with dry friction tape 21 and the peaks of the corrugations of extreme tape 21 ring 22, the housing 19 and the plunger 27, and when the offset in the axial direction with dry friction conical part 16 buffer 3 relative to the pushers 27, primalsense as the buffer offset 3 with increasing force to the buffer.

Parameters buffer device, it is desirable to calculate so that when the buffer offset 3 on the course were spent kinetic energy maximum impact. The force of the blow in the cover 6 of the flange 17 when the output buffer is determined accumulated in the first phase of the strike, when the growth of the amplitude of the ILA strike, the potential energy and the energy dissipated by the buffer device during recoil.

The buffer devices progesterone elements tapes, made of a material MP, the kinetic impact energy is dissipated due to dry friction forces when the buffer offset relative to the pushers and mutual slippage of coils parts of the wire material MP at their deformation upon impact.

The advantages of the proposed buffer device will be compared with the known design spring-friction buffer, we denote its (1) (see the book Bridge cranes General purpose/ A. P. Shabanov, A., Lysakov. Moscow. The engineering. 1980, page 202), because compared with the spring buffer is meaningless because the spring buffer is placed on cranes with a speed not greater 70 m/min, and with a relatively small mass (small spans cranes).

We offer spring-friction buffer is proposed to put as known buffer of this class (1) and known as hydraulic buffer (see the same book, page 203), we denote its (2) valves with speed up to 160 m/min, and cranes with large masses (with large spans).

The proposed buffer cranes dissipate much more energy than buffers (1) and (2) in the same buffer offset. And this energy can be increased in stalk the time compared to the buffer cassette 10 with one multi-layered corrugated package 20 how increasing the number of serially connected packs 20 in each cassette 10. However, even when a large number of series-connected packages diametrical size of the buffer device remain structurally quite acceptable, and the length of the buffer device generally does not increase. To achieve the same magnitude of dispersed energy in the known constructions of buffers (1) and (2) structurally acceptable size is impossible.

The proposed buffer has more optimal proofessional characteristic (UFH) shock in comparison with a sharply non-linear characteristic of the buffer (2).

UFH proposed buffer can vary within wide limits without changing technological equipment by replacing part of the corrugated strips 20 the same number of smooth tape with the same thickness.

The proposed buffer structurally and technologically simpler buffer (1), and buffer (2). Its main oprahfication elements - layered corrugated packages 20 are manufactured by stamping is the most progressive cheap and efficient method.

Parts cassettes 10 and the Assembly of cassettes can be performed centrally at the other enterprise or specialized area that can significantly reduce the cost of manufacture of the tape and, therefore, the buffer device.

When unacceptable wear of the belts 21 of the package 20 or damaged cassette 10 can be easily replaced is as new, taken from a warehouse, and a buffer unit will be working again, but useless, the cartridge may be sent in for repair.

The proposed buffer device is fully calculated, i.e., by calculation, you can determine the optimal UFH devices for cranes working in the shop on a collision course.

Calculation methodology the proposed design of buffers developed by us and is our "know how" and not described here.

Manufacturing technology progesterone elements of material MP is quite simple and is now well developed and can be fully automated. Calculation method for items of material MP running on the compression stroke (see the book the Dynamics of vibration protection systems with structural damping and development of vibration isolators wire material Mr/ Year / Century Lazutkin. Samara state University of railway engineering, Samara, 2010).

In conclusion, let us point out that the proposed design of the buffer device can be used as buffers cars, diesel and electric locomotives.

1. The buffer crane, containing cylinder, located in one or two compression springs, which relies on the buffer, and between the shank of the buffer and the bottom of the cylinder has a length greater than the stroke of the buffer, and the maximum deformation of the spring is equal to Ho is u, characterized in that the shank of the buffer is made conical, with no gaps or with a small preload is included in the response conical holes formed by the pushers damping tapes, they may be one, two, or more, mounted in the housing of the buffer device close to each other, and each of the damping cartridge consists of a body, cover, screw on the threads on the housing and secured against unscrewing the radial locking screws, inside the housing with a slight interference fit on the tops of the corrugations, but sufficient to maintain the position of the parts cassettes accidental impacts to the buffer inserted: one, two or more multi-layered corrugated ring package, recruited from hardened steel polished corrugated ribbons "bumps in the corrugation between the packages, if there are two or more, are cut on a sector of a ring, on which the multilayer packages rely on "top of the flute to the top of the flute", and the joints between the ends of each corrugated tape each package is distributed evenly in the circumferential direction on the tops of the corrugations so that the adjacent contact strip joints deployed at 180°, between the ends of the tape at the junction there is a guaranteed clearance, minimum value, but such that at full extension of the corrugations of the package there was no overlap of the ends of th is ture tape at each other, and the initial curvature of the corrugations f0selected such that at full extension packages not happened plastic deformation belts, side clearances between the mating ends of the sectors of the rings made the minimum possible, but such that when the reverse course of the buffer was not rasklinivanie sectors of these rings, and the pushers, based on the corrugations at the inner package, not hanging out with this from the buffer, these connected in series packages form progesteronic element of each cartridge, and the pushers are also made in the form of sectors, the size of which is chosen so that in the free state of the cartridge under the action of radial forces acting from the side of the package, they form a continuous ring with a tapered Central hole with a cone angle equal to the angle of the cone shank buffer, and each package is still a little tightness on the tops of the corrugations of approximately (0.05 to 0.1)f0and the joints between sectors rings, sectors of the pusher evenly distributed around the circumference and are located below the tops of the troughs of the corrugations of the packet, and the length of the tapered shank of the buffer is made such that in the state, unloaded a shock load from the end of the tape, find the first in the direction of the strike, there was a conical section with a length sufficient to fully straighten g is from package or with the length of the straightening of the corrugations so that the residual curvature of the corrugations of each package was not more than 0.02-0.05 mm, and under the end that the last cartridge based on the case, there would be small speaker cone area of the buffer between the lid of the buffer device, rigidly connected to the housing, and a cassette is inserted, the spacer, the thickness of which is chosen so as to ensure a reliable fixation of the cassettes in the buffer device, the cylindrical portion of the buffer exits through the guide hole in the lid so that the distance from the end face of the nut, wrapped in a buffer to cover more than the maximum stroke of the buffer and at the end of the buffer is made of a bore, in which a nut fixed conical disc, made of wire material Mr ("- metal") or dense rubber, or solid polymer.

2. The buffer crane under item 1, characterized in that between packages and rings the first few packets whose total value of clearances in the joints in full extension of the corrugations of the packages exceeds about one third or one quarter of the pitch of the corrugations, the account numbers of the packets is from the axis of the buffer and between the package and the follower has one, two or more smooth, steel, polished tape the joints are evenly distributed across the district is ti, and neighboring smooth tape joints deployed at 180°, and the junction of the smooth tape in contact with a corrugated, relative to the junction of the latter also deployed to 180°.

3. The buffer crane, containing cylinder, located in one or two compression springs, which relies on the buffer, and between the shank of the buffer and the bottom of the cylinder has a length greater than the stroke of the buffer, and the maximum deformation of the spring is equal to the move, characterized in that the shank of the buffer is made conical, with no gaps or with a small preload is included in the response conical holes formed by the pushers damping tapes, they may be one, two, or more, mounted in the housing of the buffer device close to each other, and each of the damping cartridge consists of a body, cover, screw on the threads on the housing and secured against unscrewing the radial locking screws, inside of each cartridge with a small radial preload is progesteronic element made of wire nonwoven Mr ("- metal") by pressing the blank in radial directions, made either in the form of a thick-walled cylinder or private sectors, evenly spaced on a circle with gaps on the ends of the sectors, as unselectable in the free state cassettes and premaxilla the buffer offset in the direction of the shot, on progesteronic element with a small radial tensioning wearing the ring-plunger composed of separate sectors, in radial cross-section having a U-shape, and in the case of performing upregulating element in the form of separate sectors, each sector put its sector of the pusher, and the size of the sector angle of the pusher is selected so that in the free state of tapes the ends of the sectors of the pusher in contact with each other, and in each sector upregulating element created radial interference fit, and the cover of the buffer is mounted shockproof cushion made of a material Mr pressing the workpiece in the direction perpendicular to the working surface shockproof cushion, and under the end that the last cartridge based on the case, there would be small speaker cone area of the buffer between the lid of the buffer device, rigidly connected to the housing, and a cassette is inserted, the spacer, the thickness of which is chosen so as to ensure a reliable fixation of the cassettes in the buffer device, the cylindrical portion of the buffer exits through the guide hole in the lid so that the distance from the end face of the nut, wrapped in a buffer to cover more than the maximum stroke of the buffer and at the end of the buffer is made boring, using the nut is fixed conical disc, made of wire of Mr material, or hard rubber, or solid polymer.

4. The buffer crane on p. 3, characterized in that the buffer consists of two rigidly connected by the threaded parts - head part with a fixed inside the disc of the Mr material and removable conical part.



 

Same patents:

FIELD: machine building.

SUBSTANCE: vibration isolator consists of base, elastic elements and bearing assemblies. The elastic elements are designed as a package of top and bottom elastic elements of arch type facing to each other. Each package is designed as a set of flat springs alternating in mutually perpendicular directions. Every flat spring consists of a horizontal flange and two lateral flanges bent at the angle 135° to the horizontal flange and fitted with bearing sections at the ends. The damping element of the vibration isolator is a compound one and consists of a friction part and an elastic part. The friction part is made as bushes with flanges at the ends and a section of a rope wound on the bushes in a closed loop. The bushes are coupled with the resilient elements by rivets. The elastic part is made as an elastodamping ring embracing the rope section from outside. The ring material is elastomer, e.g. rubber, polyurethane or combined material, such as rubber-cord casing. The elastic part of the damping element is performed in a static state with pre-load onto a friction part.

EFFECT: higher vibration isolation efficiency.

2 cl, 2 dwg

Vibration isolator // 2538854

FIELD: machine building.

SUBSTANCE: vibration isolator comprises housing, base, elastic element, bottom and top stroke limiters of elastic element. The housing is rigidly joined with the base designed as a round axial bearing. The elastic element interacts with the top and bottom stroke limiters through the bottom bearing barrel and the top cover which is rigidly connected to the threaded bushing. The screw for connection of the elastic element with the vibration isolated object is fixed in the threaded bushing. The housing in the top part is connected to the cover on which the elastic dynamic stroke limiter of an object (the limiter is made from elastomer) is fixed. In the cover, perpendicular to its axis, a hole for pumping into the system of viscous lubricant, for example solid oil, is provisioned. The elastic element is designed as a combined dish-shaped one. The bottom part of the elastic element frame consists of the disk-shaped base disk with a ring internal cavity where the bottom elastic ring is placed. The top part of the frame is designed as a disk-shaped cover with the central ring groove. The cover by means of screws is rigidly joined with the top elastic ring. The central ring groove of the cover has a layer of vibration damping material from polyurethane on which a mounting plate for fastening of the vibration isolated object is fixed.

EFFECT: vibration insulation efficiency improvement.

2 cl, 3 dwg

FIELD: machine building.

SUBSTANCE: vibration isolator consists of base, elastic elements and bearing assemblies. The elastic elements are designed as a package of top and bottom elastic elements of arch type facing to each other. Each package is designed as a set of flat springs alternating in mutually perpendicular directions. Each flat spring consists of a horizontal flange and two lateral flanges bent at the angle 135° to the horizontal flange and fitted with bearing sections at the ends. The damping element of the vibration isolator is a compound one and consists of a friction part and an elastic part. The friction part is made as bushes with flanges at the ends and a section of a rope wound on the bushes in a closed loop. The bushes are coupled with the resilient elements by rivets. The elastic part is made as an elastodamping ring embracing the rope section from outside. The ring material is elastomer, e.g. rubber, polyurethane or combined material, such as rubber-cord casing.

EFFECT: higher vibration isolation efficiency.

2 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: vibration isolator comprises a case, a base, a spring, top and bottom spring stroke limiters made of elastomer, and a threaded bush to couple the said spring with the body whose vibrations are to be damped. The said case is rigidly coupled with the base made as a round centre pad. The bottom spring stroke limiter of cylindrical shape rests upon the centre pad. The spring interacts with the top and bottom stroke limiters via the lower thrust barrel and the top cover enclosing the spring, the cover is rigidly connected with the threaded bush. The cover comprises the top spring stroke limiter made as a cylindrical bush enclosing the cover from above. The threaded bush comprises a screw to couple the spring with the body to be isolated in terms of vibration. The body in its upper part is coupled with the cover, on the end surface of which there is a resilient dynamic limiter of the body movement made from elastomer. The cover is provided with a hole for the injection of a ductile lubricant, e.g. solid oil, into the system. Two additional damping elements are set in the axial hole of the bottom spring stroke limiter, one of the elements is made as a cylinder-conic bush and made from polyurethane and the other one is set inside the first element, is of cylindrical shape and made as resilient gauze. A damper made from elastomer is set inside the spring.

EFFECT: higher vibration isolation efficiency.

1 dwg

FIELD: machine building.

SUBSTANCE: invention relates to machine building. Vibration isolator comprises flat resilient and friction damping elements. Flat resilient elements are made as a package of arc-type resilient elements consisting of flat springs alternating in mutually perpendicular directions and resting against a base. Every flat spring consists of a horizontal flange and two lateral flanges bent by 135° to the horizontal flange and provided with thrust sections at the ends. The damping element is a compound one and consists of a friction part and an elastic part. The friction part is made as bushes with flanges at the ends and a section of a rope wound on the bushes in a closed loop. The bushes are coupled with the resilient elements by rivets. The elastic part is made as an elastodamping ring embracing the rope section from outside.

EFFECT: higher vibration isolation efficiency.

3 cl, 1 dwg

FIELD: machine building.

SUBSTANCE: invention relates to machine building. A disk-shaped resilient element comprises a body in which a resilient element is installed. The lower body part consists of a base made as a disk with annular inner groove. The lower ring of the resilient element is set in the disk groove. The upper body part is made as a cover being a disk with a central annular notch. The cover is rigidly connected with the upper ring of the resilient element by screws. A layer of vibration damping material from polyurethane is arranged in the central annular notch of the cover, and a mounting plate to hold the unit whose vibrations are to be isolated is fixed on the said layer.

EFFECT: increased efficiency of vibration isolation in resonance mode.

2 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: vibration absorber consists of a casing and a resilient element interacting with a unit. Two guide bushes joined by a common ring bottom turned to a base are secured at the casing base by a layer of cast polyurethane. A pack of dish-like resilient elements is installed axisymmetric and coaxial to the guide bushes, the elements rest by the bottom backing surfaces against the ring bottom made of an antifriction material and by the top backing surfaces against the cover embracing the cast polyurethane layer with a gap. By means of a fastening element the cover is connected to a load bearing threaded element, for example, a bolt with its head being covered by the cast polyurethane layer. The bushes on the open part side are fitted with ring flanged edges, coaxial to the axes of the bushes on which resilient rings are fixed with a gap in respect to the inner cover surface and serve as resilient limiters of moving elements of the vibration absorber. Resilient damping mesh elements are set inside and outside the dish-like resilient elements; they are made as pieces of an off-grade rope of different diameter mixed up with the scraps of polyurethane products.

EFFECT: increased efficiency of space vibration absorption and simplified design and installation.

1 dwg

FIELD: machine building.

SUBSTANCE: damper comprises base, case, resilient element and elastically damping screen elements interacting with the object. Two guide cylindrical bushes jointed by common bottom are secured at case base by a ply of moulded polyurethane. Said guide bushes are made of rigid damping material, for example, "Agat" type elastron. Pack of plate-like resilient elements resting by bottom surface on circular bottom is aligned with guide bush and made of antifriction material and by top nearing surface on the cover arranged around moulded polyurethane ply with clearance. Bush flanges support resilient rings secured thereto with clearance relative to cover surface to make resilient limiters of the damper movable parts. Damping screen elements are arranged between plate-like resilient elements.

EFFECT: higher efficiency of damping, simplified design and assembly.

1 dwg

FIELD: machine building.

SUBSTANCE: vibration absorber consists of a casing and a resilient element interacting with a unit. The casing is made as a base plate where two guiding sleeves with bottoms turned to the base plate are fixed by a layer of cast polyurethane. Resilient elements are set inside the guiding sleeves symmetrically to their axes; the elements are made as two rings placed in vertical planes that are mutually perpendicular to each other. The lower bearing surfaces of springs rest on round disks from antifriction material and the upper ones - on the cap covering the cast polyurethane layer with a gap. By means of a fastening element the cap is connected to a load bearing threaded element, for example, a bolt with its head being covered by a cast polyurethane layer. The sleeves on the side of the open part are fitted by ring flanged edges, coaxial to the sleeves' axes on which resilient rings are fixed with a gap in respect to the inner cap surface and serve as resilient limiters of moving elements of the vibration absorber. Resilient damping mesh elements are set under the disks of the guiding sleeves.

EFFECT: increased efficiency of space vibration absorption and simplified design and installation.

2 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: device comprises a casing with a cylindrical hole, a stop member set on the casing, a stem with a thrust collar placed in the casing cavity and damping elements of two types. The damping elements are located in the casing cavity between the thrust collar and the stop member. The damping elements of the first type comprise disk springs. The damping elements of the second type comprise disks and gaskets set between them; at that the disks and gaskets are made from materials with different ability to absorb mechanical energy in the course of deformation and destruction under shock load.

EFFECT: improved damping characteristics in the wide range of frequencies and amplitudes.

10 cl, 1 dwg, 1 tbl

FIELD: machine building.

SUBSTANCE: inventions group relates to machine building. The vibration isolator contains casing with flange with two cone resilient bushings out of the wire material "Metal rubber"; clamping sleeve with hole for securing of the vibration-isolated object to the vibration isolator; cone support installed on the clamping sleeve; base on which casing is installed. The radial cross-section of bushings is hexagon with sides, antisymmetric relatively to its main diagonal, and rounded peaks. On the clamping sleeve a flange is made, the cone support rests in its end face. The cone cover is installed on smooth cylindrical part of the clamping sleeve and is centred on it. On the outside surface of the cone support a flat support platform is made. The axial tension of the resilient bushings is provided by tightening of the round nut installed on the thread end of the clamping sleeve. The axial tension crated in the resilient bushings is controlled by size between the flat end face of the cover and flat belt made on the external surface of the cone support, and the vibro-isolated object is secured to the vibration isolator using the screw inserted in the clamping sleeve and resilient washer. On the support surface of the casing flange the centring collar is made, and in the base a ring groove is made, in which the collar is installed, and base is centred as per its outside diameter. Method of the vibration isolator assemblage means consequential pressing of the resilient bushings in casing of the vibration isolator, control of the axial tension and securing on the assembled base detail.

EFFECT: decreasing of the dynamic loads on the object both in resonance, and in above resonance zones, and increasing of the vibration isolator service life.

7 cl, 13 dwg

FIELD: machine building.

SUBSTANCE: invention relates to machine building. The vibration isolator contains a base, elastic mesh elements, upper and lower press washers. The base is located in the middle part of the vibration isolator and is designed as a plate with fastening holes. The mesh elastic elements are rigidly connected to a foundation by means of backup rings. In the upper mesh elastic element at the centre the damper of dry abrasion is axisymmetrically located. The damper is designed as the upper press washer, rigidly joint with centred ring enclosed by the axially located ring, rigidly connected with the base.

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

4 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: invention relates to machine building. Vibration isolator contains a base with a cover, with elastic mesh elements and inertial mass between them. The base is composed by a plate with mounting holes. The cover is designed with a central threaded hole for fastening of vibration isolated object. The inertial mass consists of opposed washers fastened to each other by vibration damping material. From above and from below of the inertial mass the mesh elastic elements with fastening washers are located. The fastening washers are rigidly connected to a base, cover and inertial mass.

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

5 cl, 2 dwg

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

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: 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 10°÷80° 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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