CN218561958U

CN218561958U - Subway rail vibration damper with transverse vibration damping function

Info

Publication number: CN218561958U
Application number: CN202222938589.2U
Authority: CN
Inventors: 王羽; 杨淑兰; 郭艳微; 黄天荣; 赵艳; 王世华; 葛晓燕; 李杨; 王瑞红; 宋静; 刘丽萍; 尚胜美; 芦洪涛; 邹铁梅
Original assignee: Shanghai Urban Construction Vocational College
Current assignee: Shanghai Urban Construction Vocational College
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2023-03-03
Anticipated expiration: 2032-11-04

Abstract

The utility model discloses a subway track vibration damper with transverse vibration damping function, which comprises a rail bearing plate and buckling devices, wherein the buckling devices are divided into two groups, are respectively and symmetrically arranged at the two transverse sides of a subway track steel rail and install the steel rail on the rail bearing plate, and the rail bearing plate is used for supporting the steel rail of the subway track; the buckling and pressing device comprises a pressing block, a U-shaped connecting seat and a damping spring, wherein the pressing block is used for pressing the steel rail, the U-shaped connecting seat is fixedly connected with the rail bearing plate, and the opening of the U-shaped connecting seat faces one side of the steel rail; the damping spring is arranged in the opening of the U-shaped connecting seat, and a guide post is arranged in the damping spring along the axis direction of the damping spring; compare in current the fastener set up the rubber pad in the place with the contact of rail transverse direction or rely on fastener self elasticity to resist the mode of track lateral vibration, the utility model discloses a set up damping spring behind the briquetting, damping spring's the ability of suppressing vibration is stronger, can effectually resist the horizontal vibration of rail.

Description

Subway rail vibration damper with transverse vibration damping function

Technical Field

The utility model belongs to the technical field of the subway track, concretely relates to subway track vibration damper with horizontal damping function.

Background

The subway system greatly relieves the increasingly serious urban traffic pressure, brings great convenience to people going out, and meanwhile, causes vibration influence on the surrounding environment of the track. In train operation, the vibration of different frequencies of each structure in a wheel rail system causes the vibration of surrounding environment and noise pollution; how to solve vibration and noise pollution in the rail transit becomes one of the key factors of sustainable development of urban rail transit construction. At present, as the fastener vibration reduction structure is convenient and fast to install and simple in structure, most of subway rails in China adopt the fastener vibration reduction structure; the fastener damping structure is generally through setting up the damping pad between rail and iron tie plate or iron tie plate and sleeper to reduce the rigidity contact between each other and reach the damping noise reduction effect. However, the structure can achieve a certain effect on the vibration in the vertical direction of the track, and the effect on the transverse vibration of the track is not good; rubber pads are arranged at the positions of the fasteners, which are contacted with the steel rail in the transverse direction, but the rubber pads are not easy to replace in the later maintenance due to the structure; or some vibration-damping fasteners have certain elastic capacity and can absorb certain transverse vibration energy, but the vibration-damping fastener has limited vibration-absorbing capacity. Therefore, it is necessary to provide a vibration damping device, which can make the subway rail have better capability of resisting transverse vibration.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a subway track vibration damper with horizontal damping function aims at solving above-mentioned problem.

In order to achieve the above object, the utility model provides a following technical scheme: a subway rail vibration damping device with a transverse vibration damping function comprises two groups of rail bearing plates and buckling devices, wherein the two groups of buckling devices are symmetrically arranged on two transverse sides of a subway rail respectively and are used for mounting the rail on the rail bearing plates;

the buckling and pressing device comprises a pressing block, a U-shaped connecting seat and a damping spring, wherein the pressing block is used for pressing the steel rail, the U-shaped connecting seat is fixedly connected with the rail bearing plate, and the opening of the U-shaped connecting seat faces one side of the steel rail; the damping spring is arranged in the opening of the U-shaped connecting seat, one end of the damping spring is fixedly connected with the bottom of the opening of the U-shaped connecting seat, the other end of the damping spring is fixedly connected with the pressing block, a guide post is arranged in the damping spring along the axis direction of the damping spring, and one end, close to the pressing block, of the guide post is arranged in the pressing block in a sliding mode.

Furthermore, a bayonet matched with the lower part of the steel rail in a shape fitting manner is arranged on one side of the pressing block close to the steel rail along the length direction of the rail.

Further, the damping springs are arranged in a plurality of groups at equal intervals along the length direction of the track.

And the vibration absorption pads are arranged in two groups and are respectively arranged at one end of the arms at the two sides of the U-shaped connecting seat, which is close to the pressing block.

Further, the vibration absorption pad is a rubber pad.

Further, still include the protective cover, the protective cover install in on the U type connecting seat, be used for sheltering from the uncovered on U type connecting seat upper portion.

The damping vibration absorber is arranged in a track bed of the subway track and is fixedly installed on the ground through the fixing plate, the damping vibration absorber is provided with a supporting end extending upwards, the supporting end penetrates through the fixing plate and is connected with the rail bearing plate, and a floating space is formed between the fixing plate and the rail bearing plate.

Further, an outer sleeve is sleeved outside the damping shock absorber and embedded in a track bed of the subway track, and a sound absorption material is arranged between the inner side wall of the outer sleeve and the outer side wall of the damping shock absorber.

Furthermore, vibration damping pads are arranged in the floating space, and the two groups of vibration damping pads are detachably connected with the fixed plate respectively.

Further, the damping vibration absorber is a spring viscous damper.

The utility model discloses following beneficial effect has at least:

1. compare in current the fastener set up the rubber pad in the place with the contact of rail transverse direction or rely on fastener self elasticity to resist the mode of track lateral vibration, the utility model discloses a set up damping spring behind the briquetting, damping spring's the ability of suppressing vibration is stronger, can effectually resist the horizontal vibration of rail.

2. The utility model discloses withhold the U type connecting seat of device, the spring sets up in the opening of U type connecting seat, can save horizontal space.

3. Through set up in U-shaped connecting seat both sides arm is close to the pad is inhaled to the one end of briquetting, can further transversely reduce vibration and fall the ability of making an uproar, inhale simultaneously inhale the pad and not with rail direct contact, be convenient for the change and the maintenance in later stage.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention

FIG. 2 is a schematic view of the shaft measuring device of the present invention

FIG. 3 shows the shaft measuring and indicating diagram of the buckling device of the present invention

FIG. 4 is a schematic view of the pressing device of the present invention

FIG. 5 isbase:Sub>A schematic cross-sectional view taken at A-A in FIG. 4

Reference numerals: 1-a ballast bed; 2-steel rail; 3-damping vibration absorber; 301-steel spring; 302-cylinder liner; 303-sound absorbing material; 304-an outer sleeve; 305-a piston; 305 a-a circular aperture; 306-piston pusher rod; 307-cylinder cover; 4, fixing a plate; 5-a vibration damping pad; 6-a rail bearing plate; 7-buckling and pressing device; 701-briquetting, 701 a-pilot hole; 702-a damper spring; 703-U shaped connecting seat; 704-a shock absorbing pad; 705-guide post; 706-spring seat I; 707-spring seat II; 8-protective cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

It is to be noted, however, that the drawings are designed solely for purposes of illustration and not as a definition of the limits of the invention, for which reference should be made to the appended drawings; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Referring to fig. 1-5, a subway rail vibration damping device with a transverse vibration damping function comprises rail bearing plates 6 and buckling devices, wherein the buckling devices are arranged in two groups, are respectively and symmetrically arranged on two transverse sides of a subway rail 2, and are used for installing the rail 2 on the rail bearing plates 6, and the rail bearing plates 6 are used for supporting the rail 2 of the subway rail;

the buckling and pressing device comprises a pressing block 701, a U-shaped connecting seat 703 and a damping spring 702, wherein the pressing block 701 is used for pressing the steel rail 2, and a bayonet which is matched with the lower part of the steel rail 2 in a shape fitting manner is arranged on one side of the pressing block 701 close to the steel rail 2 along the length direction of the rail, and the bayonet is an arc-shaped opening; the U-shaped connecting seat 703 is fixedly connected with the rail bearing plate 6, here, a screw connection, and an opening thereof faces one side of the steel rail 2; the damping spring 702 is arranged in the opening of the U-shaped connecting seat 703, one end of the damping spring is fixedly connected with the bottom of the opening of the U-shaped connecting seat 703, the other end of the damping spring is fixedly connected with the pressing block 701, two ends of the damping spring are respectively and fixedly connected with corresponding parts through a spring seat I706 and a spring seat II 707, such as welding, and the spring seat I706 and the spring seat II 707 are of columnar structures and are provided with corresponding spring connecting positioning grooves; a guide post 705 is arranged in the damping spring 702 along the axial direction, one end of the guide post 705 close to the pressing block 701 is arranged in the pressing block 701 in a penetrating manner, a guide hole 701a which penetrates through the pressing block 701 in the transverse direction is arranged at a position corresponding to the pressing block 701, one end of the guide post is arranged in the guide hole 701a, the pressing block 701 can be limited in the vertical direction, and the transverse direction is limited by the spring force; by arranging the vibration damping spring 702, compared with the existing mode that a rubber pad is arranged at a position where the fastener is contacted with the steel rail in the transverse direction, the vibration damping capacity of the spring is stronger, and the transverse vibration of the steel rail can be effectively resisted; the spring is arranged in the opening of the U-shaped connecting seat 703, so that the transverse space can be saved.

In this embodiment, the damping springs 702 are arranged in the opening of the U-shaped connection seat 703 at equal intervals along the length direction of the rail; of course, the damping capacity can be set according to the damping grade and the parameters of the spring, and one group or two groups can be used to enhance the damping capacity.

In this embodiment, the device further includes two sets of vibration absorbing pads 704, the vibration absorbing pads 704 may be made of rubber plates, and the two sets of vibration absorbing pads are respectively disposed on two side arms of the U-shaped connecting seat 703 near one end of the pressing block 701, where the vibration absorbing pads 704 have a U-shaped structure and are conveniently clamped on two side arms of the U-shaped connecting seat 703; the vibration absorption pad 704 is arranged to further improve the vibration absorption and noise reduction capability; also here the shock absorbing pads 704 are not placed in direct contact with the rails, so removal and repair is easier.

In this embodiment, still include protective cover 8, protective cover 8 fixed connection in on the U-shaped connecting seat 703, like the welding, bolted connection etc. is used for sheltering from the uncovered on U-shaped connecting seat 703 upper portion, can effectively prevent that liquid such as rainwater from getting into and causing ponding corrosion spring.

In the embodiment, the damping device further comprises a fixing plate 4 and a damping vibration absorber 3, wherein the damping vibration absorber 3 is arranged in the track bed 1 of the subway track and is fixedly installed on the ground through the fixing plate 4, and the fixing plate 4 is fixedly connected with the ground, such as a chemical bolt or an expansion bolt; the damping vibration absorber 3 is arranged in the track bed 1 of the subway track, the damping vibration absorber 3 is provided with a supporting end which extends upwards and is connected with the rail bearing plate 6 through the fixed plate 4, wherein the upward direction refers to the vertical ground direction; a floating space is formed between the fixed plate 4 and the rail bearing plate 6;

the rail bearing plate 6 is arranged below the subway rail steel rail 2, the damping absorber 3 is arranged below the rail bearing plate 6, the damper absorber 3 enables the rail bearing plate 6 to be floated and has the function similar to a floating slab track bed, and the damper absorber 3 has a good vibration suppression effect and can effectively improve the vibration suppression effect of the subway rail steel rail 2;

compared with the integral track bed vibration reduction mode, the structure is simpler; need not demolish whole track bed 1 structure during the use, only need on current track bed 1 basis bore establish corresponding mounting hole can, fixed plate 4 and attenuator shock absorber 3 also can be prefabricated into a whole simultaneously, further improve the efficiency of construction, guarantee that subway system resumes the operation as early as possible.

In this embodiment, the damping vibration absorber 3 is externally sleeved with an outer sleeve 304, wherein both the damping vibration absorber 3 and the outer sleeve 304 have a columnar structure; the outer sleeve 304 is embedded in the track bed 1 of the subway track, the sound-absorbing material 303 is arranged between the inner side wall of the outer sleeve 304 and the outer side wall of the damping vibration absorber 3, the sound-absorbing material 303 can be made of rubber products or sponge and the like, and the sound-absorbing material 303 can absorb part of noise generated by vibration, so that the noise transmitted to the track bed foundation is reduced, and the noise is further reduced and transmitted to the external environment.

In this embodiment, be provided with damping pad 5 in the floating space, damping pad 5 with fixed plate 4 can dismantle the connection, like threaded connection etc. here damping pad 5 is two sets of, can conveniently dismantle the maintenance and change.

In this embodiment, the damping vibration absorber 3 is a spring viscous damper, and compared with a steel spring vibration absorber, the spring viscous damper can absorb the low-frequency resonance energy of the rail bearing plate, so that the defect that the steel spring vibration absorber inhibits low-frequency vibration is overcome, and the vibration isolation frequency range is expanded; the spring viscous damper comprises a cylinder sleeve 302 and a cylinder cover 307, wherein the upper end of the cylinder sleeve 302 is open, and the lower end of the cylinder sleeve is of an integrally formed closed structure; the cylinder cover 307 is hermetically covered on the upper end opening of the cylinder sleeve 302 to form a closed space in the cylinder, the cylinder sleeve 302 is in a cylindrical structure, the covered parts can be connected in a threaded connection mode, and a sealing gasket or a sealing ring is arranged on the binding surface to ensure the sealing property.

In this embodiment, a piston 305 is arranged in the spring viscous damper, the piston 305 divides a chamber in the cylinder into an upper chamber and a lower chamber, and the flow of damping fluid is realized by the up-and-down movement of the piston 305 to provide a damping force; a steel spring 301 is arranged between the bottom of the lower chamber and the piston 305, the steel spring 301 is arranged in the lower chamber, two ends of the steel spring 301 are respectively fixed on the bottom surface of the lower chamber and the piston 305, and the piston 305 can be provided with a fixed slot position of the steel spring 301; when the damper is under pressure, the damping fluid generates damping force, and the rigid spring 301 provides elastic force to bear upper load; after one working period, the spring 301 is just restored, and simultaneously the piston is also driven to reset; the type of the rigid spring 301 can be set according to the damping level; one end of the piston 305 close to the upper chamber is fixedly connected with a piston push rod 306, wherein the fixed connection can be welding, threaded connection and the like, and an integrally formed structure can also be adopted; one end of the piston push rod 306, which is far away from the piston, penetrates through the cylinder cover 302 to be connected with the rail bearing plate 6, and is fixedly connected here, that is, the support end which is extended upwards as mentioned above, plays a role of supporting the rail bearing plate 6, and the fixed connection here is a screw connection, and a circular sinking platform structure for mounting screws is arranged at the top center of the support rail bearing plate 6.

In this embodiment, the piston 305 is provided with a circular hole 305a penetrating through the piston up and down, damping fluid in two chambers above and below the piston 305 flows and exchanges through the circular hole 305a, the damping fluid is common oily liquid (silicone oil) and has viscous characteristics, corresponding damping force can be generated when the closed space is extruded, different damping fluids have different damping characteristics, and appropriate damping fluid can be determined according to the vibration reduction requirements of the track; the size and the number of the pores can be set according to the requirement of the vibration reduction grade.

In this embodiment, the cylinder cover 302 is provided with a plurality of groups of clamping grooves which are matched and connected with the fixing plate 4, the clamping grooves are uniformly distributed along the circumferential direction, the clamping grooves are uniformly distributed and arranged in four groups according to 90 degrees, the positions of the fixing plate 4 corresponding to the clamping grooves are provided with clamping blocks which are in fit with the clamping grooves in a downward protruding manner, and the clamping blocks are clamped into the clamping grooves when in use and are connected in an interference fit manner to limit the circumferential rotation of the damper; the clamping groove is of a circular hole structure, the clamping block is correspondingly of a cylindrical pin, and can be of a square structure, a kidney-shaped structure and the like, the clamping groove and the clamping block can be arranged to be quickly positioned and installed, and the circumferential rotation of the damper can be limited.

The embodiment can be implemented as follows: firstly, drilling mounting holes at certain intervals on the basis of the conventional track bed, wherein the depth of the holes is adapted to the length of a damper, then inserting a fixed plate 4 and a damping absorber 3 which are prefabricated into a whole into the mounting holes, and then fixing the fixed plate 4 with the ground by using chemical bolts; and then installing the rail bearing plate 6, and finally, fixedly installing the steel rail 2 on the rail bearing plate 6 by using the buckling and pressing device 7, so that the construction process is simple and the construction period is short.

Finally, it is noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. The utility model provides a subway track vibration damper with horizontal damping function which characterized in that: the device comprises two groups of buckling and pressing devices, wherein the buckling and pressing devices are respectively and symmetrically arranged on two transverse sides of a subway rail and are used for installing the rail on the rail bearing plate, and the rail bearing plate is used for supporting the rail of the subway rail;

the buckling and pressing device comprises a pressing block, a U-shaped connecting seat and a damping spring, the pressing block is used for pressing the steel rail, the U-shaped connecting seat is fixedly connected with the rail bearing plate, and the opening of the U-shaped connecting seat faces one side of the steel rail; the damping spring is arranged in the opening of the U-shaped connecting seat, one end of the damping spring is fixedly connected with the bottom of the opening of the U-shaped connecting seat, the other end of the damping spring is fixedly connected with the pressing block, a guide post is arranged in the damping spring along the axis direction of the damping spring, and one end of the guide post, which is close to the pressing block, is arranged in the pressing block in a sliding mode.

2. A subway rail vibration damping device having a transverse vibration damping function according to claim 1, wherein: one side of the pressing block close to the steel rail is provided with a bayonet matched with the lower part of the steel rail in a fitting manner along the length direction of the rail.

3. The subway rail vibration damping device having the transverse vibration damping function as claimed in claim 1, wherein: the vibration reduction springs are arranged in a plurality of groups at equal intervals along the length direction of the track.

4. A subway rail vibration damping device having a transverse vibration damping function according to claim 1, wherein: the vibration absorption device is characterized by further comprising two groups of vibration absorption pads which are respectively arranged at one end, close to the pressing block, of the arms on the two sides of the U-shaped connecting seat.

5. A subway rail vibration damping device having a transverse vibration damping function according to claim 4, wherein: the vibration absorption pad is a rubber pad.

6. A subway rail vibration damping device having a transverse vibration damping function according to claim 1, wherein: still include the protective cover, the protective cover install in on the U-shaped connecting seat, be used for sheltering from the uncovered on U-shaped connecting seat upper portion.

7. A subway rail vibration damping device having a transverse vibration damping function according to claim 1, wherein: the damping vibration absorber is arranged in a track bed of a subway track and is fixedly installed on the ground through the fixing plate, the damping vibration absorber is provided with a supporting end extending upwards, the supporting end penetrates through the fixing plate to be connected with the rail bearing plate, and a floating space is formed between the fixing plate and the rail bearing plate.

8. A subway rail vibration damping device having a transverse vibration damping function according to claim 7, wherein: the outer sleeve is sleeved outside the damping shock absorber and embedded in a track bed of the subway track, and a sound absorption material is arranged between the inner side wall of the outer sleeve and the outer side wall of the damping shock absorber.

9. A subway rail vibration damping device having a transverse vibration damping function according to claim 7, wherein: the floating space is internally provided with two groups of damping pads which are detachably connected with the fixed plate respectively.

10. A subway rail vibration damping device having a transverse vibration damping function according to claim 7, wherein: the damping vibration absorber is a spring viscous damper.