Kochetov's vibration isolator

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

 

The invention relates to mechanical engineering and can be used to protect process equipment, instruments and devices, as well as the human operator from the effects of vibration and shock loads.

The closest technical solution to the declared object is vibration absorber containing the base, the elastic elements and the bearings on the patent of Russian Federation №2451849 (prototype).

Lack of work of the known device is relatively low efficiency isolation because of the relatively large stiffness of the elastic element and a relatively low coefficient of dempfirovanija.

The technical result of the invention is to increase the effectiveness of vibration isolation.

This is achieved in that in the vibration damper containing the base, the elastic elements and the bearings, the elastic elements are made of a flat package top and bottom of the elastic elements of the arch type, facing towards each other, each of the packages is made in the form of a set of alternating mutually perpendicular directions flat springs, each of which consists of horizontal shelves and two side shelves, bent at the angle of 135° to the horizontal shelf and having a support sections at the ends, and a damping element made of insulator combined and consists of friction and elastic parts, the rich frictional part is made in the form of spaced parallel to the axis of insulator bushings with flanges at the ends and cut the rope, wound in a closed loop in the plane perpendicular to the axis of the insulator, bushings, which are connected with elastic elements by means of rivets, and the elastic part is made in the form providentiales ring covering the outside piece of wire, wound in a closed loop in the plane perpendicular to the axis of the insulator, on the sleeve.

In Fig.1 shows a frontal section of the proposed vibration damper of Fig.2 is a top view.

Vibration absorber package contains the upper elastic element 1 and the package bottom elastic elements 2 arch type, facing towards each other. Each pack is made in the form set alternating in mutually perpendicular directions flat springs 3 and 4, each of which consists of horizontal shelves and two side shelves, bent at the angle of 135° to the horizontal shelf and having a support sections 5 and 6 at the ends.

The damping element made of insulator combined and consists of friction and elastic parts.

The friction part is executed as parallel to the axis of insulator bushings 7 and 8 with flanges at the ends and cut the rope 9 is wound in a closed loop in the plane perpendicular to the axis of the insulator, bushing 7 and 8. Sleeve 7 and 8 are connected with the elastic elements 1 and 2 by means of rivets 10.

The elastic part is made the form providentiales ring 13, covering the outside piece of the rope 9 is wound in a closed loop in the plane perpendicular to the axis of the insulator, bushing 7 and 8. As the material of the ring 13 can be used elastomer, such as rubber, polyurethane or composite material, such as rubber-shell. While installing the elastic part of the damping element of the insulator is in a static state with tension on the friction part.

The bolt 11 mounted on an elastic elements with nuts 12, provide a link of insulator with vibrating and vibroisolating objects (in the drawings, these objects are not shown).

Vibration absorber works as follows.

Under the influence of external load elastic elements 1 and 2 are deformed in the axial and radial directions. Radial deformation of the elastic elements is accompanied by a change in diameter of the centers of the fasteners 10 and the deformation in the radial direction of the friction damping element associated with the elastic elements 1 and 2 through the sleeve 7 and 8 and rivets 10. In this case, all parts of the cable 9, located between the sleeves 7 and 8, curve, resulting in a scattered part applied to the insulator energy due to the mutual friction between the wires and strands of the cable 9, the friction of the cable 9 of the sleeve 7 and 8 at the major who's the contact pressure between the wires and strands, and between the cable and bushings, which are caused by bending of the cable on the sleeves 7 and 8. Furthermore, additional energy dissipation occurs as a result of interaction providentiales ring 13 covering the outside segment of the cable 9.

The alternation of mutual arrangement of the flat springs 3 and 4, the components of the elastic elements 1 and 2, arch type, in mutually perpendicular directions provides a clearance between the flat springs, which eliminates their mutual friction with deformation of the elastic element, which gives it almost purely elastic properties. Due to the functional separation of the components on the elastic and damping elements, and the ease of Assembly is ensured operational selection provedeniya characteristics of insulator for specific conditions.

The proposed solution provides increased load capacity with less weight of insulator, simplified design, improved vibration-damping qualities in the above-resonance zone frequencies, the efficiency of selection provedeniya characteristics for specific operating conditions, as well as the possibility of increasing vibration protection qualities at resonance.

1. Vibration absorber containing the base, the elastic elements and the reference nodes, wherein the elastic elements within the s flat package top and bottom of the elastic elements of the arch type, facing towards each other, and each pack is made in the form set alternating in mutually perpendicular directions flat springs, each of which consists of horizontal shelves and two side shelves, bent at the angle of 135° to the horizontal shelf and having a support sections at the ends, and a damping element made of insulator combined and consists of friction and elastic parts, and the friction part is made in the form of spaced parallel to the axis of insulator bushings with flanges at the ends and cut the rope is wound in a closed loop in the plane perpendicular to the axis of the insulator, bushing, which are connected with elastic elements by means of rivets, and the elastic part is made in the form providentiales ring covering the outside piece of wire, wound in a closed loop in the plane perpendicular to the axis of the insulator, bushing, and as the material of the ring used elastomer, such as rubber, polyurethane or composite material in the form of rubber-shell.

2. Vibration absorber under item 1, characterized in that the installation of the elastic part of the damping element of the insulator is in a static state with tension on the friction part.



 

Same patents:

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.

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EFFECT: higher vibration isolation efficiency.

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FIELD: machine building.

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EFFECT: increased efficiency of vibration isolation in resonance mode.

2 cl, 2 dwg

FIELD: machine building.

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FIELD: machine building.

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

1 dwg

FIELD: machine building.

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

2 cl, 2 dwg

FIELD: machine building.

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

10 cl, 1 dwg, 1 tbl

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. Cylindrical coil compression springs are located inside the guiding sleeves and symmetrical to their axes. 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. Resilient damping elements are set under the disks of the guiding sleeves; they are made as pieces of off-grade rope of different diameter mixed up with the scraps of polyurethane products.

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2 dwg

FIELD: transport.

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EFFECT: expanded functional capabilities.

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Vibration isolator // 2247268

FIELD: mechanical engineering.

SUBSTANCE: vibration isolator comprises two connecting supports and a set of flexible members interposed between them. The members are kinematically connected with the mechanism for changing rigidity of the vibration isolator. The mechanism is made of cylindrical step shaft the number of step of which is equal to the number of flexible members in the set. The flexible members are arranged between the races in order of increasing rigidity. The races are centered on the shaft steps to provide spaces between the inner faces of the races. The spaces are equal to admissible working strokes of the flexible members in compression. The first and end steps of the shaft are provided with stops. One stop is in a contact with the top race of the flexible member of maximum rigidity, and the other one is in a contact with the bottom race of the flexible member of minimum rigidity. The step shaft is provided with closed spaces which is in communication with the atmosphere through radial throttle passages made from the side of each of the spaces between the races. The inner faces of the races are made of a valve-seat pair.

EFFECT: enhanced load-carrying capability, expanded functional capabilities, and prolonged service life.

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Vibration isolator // 2303721

FIELD: mechanical engineering.

SUBSTANCE: invention can be used for vibration of processing equipment, including instruments and apparatuses. Proposed vibration isolator has housing and elastic element made of elastomer to engage with object. Housing is made in form of square base to which fixing member with cylindrical bushing is attached by hollow rivers. Cover of housing is made of two cylindrical bushings coaxially connected to each other by means of round partition. Elastic element is made in form of cylindrical coil spring enclosing elastic element of cylindrical form by its inner surface. Said elastic element can be made of elastomer or wire maze. Elastic element is arranged between base and cover of housing coaxially to cylindrical bushings.

EFFECT: increased efficiency of vibration isolation at resonance, simplified design and facilitated mounting.

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FIELD: machine building.

SUBSTANCE: invention is related to machine building and may be used for vibration isolation of process equipment. Vibration isolator comprises body and elastic element from elastomer that interacts with object. Body is arranged in the form of base, to which conical cover is fixed with its large base by means of hollow rivets. There is annular groove of trapezoidal section arranged in base. There is annular elastic buffer fixed in upper part of cover. Buffer interacts with cover of rubber-cord casing that covers conical screw spring. Spring rests on lower flange of rubber-cord casing, under which buffer is installed, which interacts with base. Fixing stud interacts simultaneously with cover of rubber-cord casing and conical screw spring.

EFFECT: increased efficiency of vibratory isolation in resonance mode and simplification of design and installation.

2 cl, 2 dwg

FIELD: mechanical engineering.

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EFFECT: it is achieved effectiveness increase of vibration insulation in resonant mode and simplification of structure and mounting.

2 cl, 3 dwg

Vibration isolator // 2378545

FIELD: machine building.

SUBSTANCE: invention is related to machine building, namely to systems of vibration and impact protection. Vibration isolator comprises two elastically damping elements, which face each other by means of large bases, where alternating grooves and ledges are arranged with fastening holes. Ledges of one base are installed in grooves of the other one and are separated from each other by means of metal spacer with fastening holes. Shape of spacer is equidistant to shape of ledges and grooves on elastically damping elements that are woven to each other and to spacer by means of wire arranged in between. Fastening bolts with external limiters of deformations, as limiting orifices or conical springs are fixed on according elastically damping elements. According to the first version metal spacer is arranged on two plate springs. Springs face each other with their larger bases and are fixed to each other by means of nibs arranged along periphery of each plate spring. Ledges of one elastically damping element rest on ledges of the other one. In cavities produced by slots, there are spacer nibs arranged. External limiters of deformation are arranged in the form of packets of assembled plate springs, which are installed with tight fit between each other. According to the second version, in vibration isolator there is a metal spacer arranged in the form of two packets, which are assembled from plate springs with nibs and are connected to each other by means of eyelets. Diametre of holes in eyelets is more than diametre of responsive fastening holes at periphery of elastically damping elements.

EFFECT: improved quality of anti-shock protection and reliability of vibration isolator.

4 cl, 2 dwg

FIELD: engineering industry.

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EFFECT: simplifying the design and providing attachment reliability of flexible elements.

5 dwg

Damper // 2399805

FIELD: transport.

SUBSTANCE: proposed damper comprises taper ring with its part arranged in the casing. Said casing makes the thrust for spring end.

EFFECT: simplified design, longer life and higher efficiency.

3 cl, 1 dwg

FIELD: machine building.

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

4 cl, 2 dwg

FIELD: machine building.

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

2 cl, 2 dwg

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