Damping device for rail transit

Abstract

The invention belongs to the technical field of rail transit equipment, and provides a vibration damping device for rail transit, which comprises a vibration damping seat, the top of the vibration damping seat is vertically connected with a rail in a sliding manner, and a bearing vibration damping assembly is arranged between the rail and the vibration damping seat; the two sets of main vibration reduction assemblies are arranged on the two sides of the rail correspondingly, each main vibration reduction assembly comprises an eccentric block arranged in a vibration reduction base, a rotary driving mechanism is arranged between the eccentric block and the bearing vibration reduction assembly, and the rotary driving mechanism drives the eccentric block to swing in a reciprocating mode when the rail vibrates up and down; the hydraulic vibration reduction mechanism is in transmission connection with the rotary driving mechanism, a secondary vibration reduction part is arranged in the hydraulic vibration reduction mechanism and corresponds to the eccentric block, and when the amplitude of the track is too large, the eccentric block abuts against the secondary vibration reduction part to increase damping of the hydraulic vibration reduction mechanism. The damping device can adapt to different vibration intensities, can automatically enhance damping force under the large-amplitude working condition, and provides a better vibration reduction effect.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of rail transit equipment, and particularly relates to a damping device for rail transit. BACKGROUND

[0002] With the rapid development of urban rail transit, the vibration and noise problems caused by train operation are increasingly prominent, which seriously affects the living and working environment of residents along the line and the normal operation of precision instruments and equipment. Therefore, developing efficient and reliable rail damping devices has become an important issue in the field of rail transit.

[0003] At present, common rail damping devices mostly use springs, rubber pads or simple hydraulic dampers as core damping elements. Although these traditional technologies have simple structures, they have obvious shortcomings in practical application: first, they usually have poor suppression effect on vibrations within a specific frequency range, especially low-frequency vibrations, which are prone to amplify vibrations due to resonance; second, their damping characteristics are usually fixed and cannot be adaptively adjusted according to the dynamic load generated when the train passes. When heavy trains or high-speed trains pass, excessive impact force may cause the rail amplitude to exceed the safety range, not only affecting the riding comfort, but also accelerating the fatigue damage of the rail structure and vehicle components, which poses a safety hazard. SUMMARY

[0004] The purpose of the present application is to provide a damping device for rail transit to solve the above problems.

[0005] To achieve the above purpose, the present application provides the following scheme: a damping device for rail transit, comprising: a damping seat, a rail vertically slidingly connected to the top of the damping seat, and a load-bearing damping assembly provided between the rail and the damping seat; two groups of main damping assemblies, each of which is provided on the two sides of the rail, the main damping assembly comprising an eccentric block provided in the damping seat, a rotary drive mechanism provided between the eccentric block and the load-bearing damping assembly, the rotary drive mechanism driving the eccentric block to reciprocatingly swing when the rail vibrates up and down, and a hydraulic damping mechanism in transmission connection with the rotary drive mechanism, the hydraulic damping mechanism comprising a secondary damping piece, the secondary damping piece corresponding to the eccentric block, the eccentric block and the secondary damping piece abutting each other when the amplitude of the rail is too large, for increasing the damping of the hydraulic damping mechanism.

[0006] Preferably, the load-bearing damping assembly comprises a sliding groove opened in the top of the damping seat, a connecting plate vertically slidingly connected in the sliding groove, the rail fixedly connected to the top of the connecting plate, and a plurality of load-bearing springs abutting between the bottom of the connecting plate and the bottom of the sliding groove.

[0007] Preferably, the rotating driving mechanism comprises a rotating rod horizontally connected in the damping seat, the eccentric block is fixedly sleeved on the rotating rod, a gear is also fixedly sleeved on the rotating rod, a first gear rack is vertically fixedly connected on the side wall of the connecting plate, and the first gear rack is engaged with the gear.

[0008] Preferably, the hydraulic damping mechanism comprises a connecting rod vertically and slidingly connected in the damping seat, a driving piece is arranged between the connecting rod and the gear, a first oil chamber is arranged on the inner bottom of the damping seat, a first piston is vertically and slidingly connected in the first oil chamber, the bottom of the connecting rod is fixedly connected with the top of the first piston, a second oil chamber is arranged on the inner top of the damping seat, a second piston is slidingly connected in the second oil chamber, the bottom of the second piston penetrates through the bottom of the second oil chamber, a first damping spring is fixedly connected between the second piston and the second oil chamber, and the top of the first oil chamber is communicated with the top of the second oil chamber through an oil channel.

[0009] Preferably, the driving piece comprises a second gear rack, the second gear rack is vertically and fixedly connected on the side wall of the connecting rod, the second gear rack is engaged with the gear, and the second gear rack and the first gear rack are located on the two sides of the gear.

[0010] Preferably, the secondary damping piece comprises a secondary abutting block slidingly connected on the bottom of the second piston along the axis of the second oil chamber, a second damping spring is arranged between the top of the secondary abutting block and the second piston, and the secondary abutting block is located above the eccentric block and is correspondingly arranged with the eccentric block.

[0011] Preferably, the bottom of the secondary abutting block is fixedly connected with a damping pad, and the secondary abutting block abuts against the eccentric block through the damping pad.

[0012] Preferably, a damping adjustment mechanism is arranged in the connecting rod, the bottom of the connecting rod is upwardly provided with a threaded hole, a screw rod is threadedly connected in the threaded hole, the first piston is rotationally connected on the bottom of the screw rod, the top of the screw rod is downwardly provided with a spline groove, a sliding rod is arranged in the spline groove, the sliding rod is connected with the screw rod through the spline groove, the top of the sliding rod penetrates through the top of the connecting rod and the damping seat and is fixedly connected with a hand wheel, and a rotation locking piece is arranged between the sliding rod and the threaded hole.

[0013] Preferably, the rotation locking piece comprises a support disc fixedly sleeved on the slide rod, the top of the support disc is fixedly connected with a plurality of clamping blocks, the top of the threaded hole is provided with a plurality of clamping grooves, the plurality of clamping blocks are matched with the plurality of clamping grooves, the side wall of the threaded hole is fixedly connected with a support ring, the support ring is located above the screw rod, and the spring is in abutment between the support ring and the support disc.

[0014] Preferably, the track and the damping seat are fixedly connected through a plurality of connecting bolts.

[0015] Compared with the prior art, the present application has the following advantages and technical effects: the present application combines eccentric blocks, hydraulic damping mechanisms and secondary damping pieces, efficiently converts the up-down linear vibration of the track into the reciprocating swing of the eccentric blocks and the movement of the piston in the hydraulic damping mechanism, ingeniously transmits mechanical kinetic energy to the hydraulic system, converts the mechanical kinetic energy into heat energy through the flow resistance of the liquid and dissipates the heat energy, has high damping efficiency, is particularly effective for inhibiting low-frequency resonance, simultaneously realizes self-adaptive adjustment of damping performance to vibration intensity, and effectively deals with the impact generated when the train passes under different loads and speeds. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0017] Figure 1 is a sectional view of the damping device of the present application; Figure 2 is a sectional view of the damping device of the present application; Figure 1 is an enlarged view of part A in Figure 3 is a connection schematic view of the gear and the eccentric block of the present application; Figure 4 is a sectional view of the connecting rod of the present application; Figure 5 is a schematic view of the secondary damping piece of the present application; Wherein, 1, damping seat; 2, track; 3, connecting plate; 4, connecting bolt; 5, hand wheel; 6, connecting plate; 7, gear; 8, eccentric block; 9, connecting rod; 10, bearing spring; 11, sliding slot; 12, first rack; 13, second rack; 14, screw; 15, first piston; 16, first oil chamber; 17, oil passage; 18, second oil chamber; 19, secondary abutting block; 20, second piston; 21, polished rod; 22, first damping spring; 23, damping pad; 24, second damping spring; 25, support disc; 26, clamping block; 27, clamping groove; 28, spring; 29, spline groove; 30, sliding rod; 31, rotating rod. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0019] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0020] In the prior art, there is a rail transit damping device, which comprises a damping seat and a track. An installation cavity is formed in the damping seat. The track is fixed on a sleeper. The damping device further comprises: A damping mechanism is arranged in the damping seat. The damping mechanism comprises a connecting box, a pushing assembly, a sliding piece, a rotating assembly, a fixing piece, a damping piece and a clamping piece. One end of the connecting box is fixedly connected with the sleeper. The pushing assembly comprises a connecting seat and a pushing piece. The connecting seat is movably installed on the connecting box. The two ends of the pushing piece are movably connected with the connecting seat and one end of the sliding piece, respectively. The sliding piece is slidably installed in a sliding seat. The sliding seat is fixed in the installation cavity and movably connected with the other end of the connecting box. The other end of the sliding piece is connected with one end of the rotating assembly. The rotating assembly is movably installed on the damping seat. The other end of the rotating assembly is connected with the fixing piece. The fixing piece is fixed with the damping piece. The damping piece is fixedly connected with the clamping piece. The track drives the sleeper to move. The sleeper drives the connecting box and the connecting seat to move. The connecting seat drives the sliding piece to slide in the sliding seat through the pushing piece. The sliding piece drives the rotating assembly to rotate on the damping seat. The rotating assembly drives the fixing piece to move towards the track. The fixing piece drives the damping piece to move. The damping piece drives the clamping piece to clamp the rail waist of the track, thereby achieving damping and support of the track.

[0021] An installation groove is formed in the damping seat. The installation groove is connected with the installation cavity in a penetrating manner. The installation groove is used for installing the rotating assembly.

[0022] The rotating assembly comprises a first connecting piece, a rotating piece and a second connecting piece, the rotating piece is movably installed in the installation slot, the two ends of the first connecting piece are connected with the rotating piece and the sliding piece respectively, and the two ends of the second connecting piece are connected with the rotating piece and the fixed piece respectively.

[0023] The sliding seat is movably connected with the connecting box through the damping assembly, the damping assembly comprises a telescopic piece and a damping piece, the two ends of the telescopic piece are fixedly connected with the sliding seat and the connecting box respectively, the damping piece is sleeved on the telescopic piece, and the two ends of the damping piece are also fixedly connected with the sliding seat and the connecting box respectively.

[0024] One end of the connecting seat extends into the connecting box and is in sliding connection with the inner wall of one side of the connecting box, an adjusting mechanism is arranged in the connecting box, the adjusting mechanism is movably connected with the connecting seat, and the adjusting mechanism is used for adjusting the position of the connecting seat.

[0025] A through slot is formed in the connecting seat, and the through slot is movably connected with the adjusting mechanism.

[0026] The adjusting mechanism comprises a driving piece, a rotating disc, a first adjusting piece, a second adjusting piece, a gear and a rack, the driving piece is fixed in the connecting box, the output end of the driving piece is fixedly connected with the rotating disc, the rotating disc is movably installed in the connecting box, the two ends of the first adjusting piece are movably connected with the rotating disc and the second adjusting piece respectively, the gear is movably installed in the connecting box and is fixedly connected with one end of the second adjusting piece, and the rack is fixedly installed on the inner wall of the through slot, and the gear and the rack are in meshing connection.

[0027] The damping seat is further provided with a pressure sensor, and the pressure sensor is provided with a pressing piece fixedly connected with the track.

[0028] The track is provided with a fixing module for fixedly connecting the track and the rail tie.

[0029] In the above technical scheme, the track is driven by pressure to move downward in the installation cavity, the rail tie drives the connecting box and the connecting seat mounted on the connecting box to move downward, the connecting seat drives the sliding piece to slide in the sliding seat through the pushing piece, the sliding piece drives the rotating piece to rotate in the installation slot through the first connecting piece, the rotating piece drives the second connecting piece and the fixed piece to move in the direction of the track, and the fixed piece drives the damping piece and the clamping piece to move in the direction of the waist of the track, so that the damping piece and the clamping piece offset the vibration and pressure received by the waist of the track, thereby realizing damping and support of the track, improving the damping effect of the device, prolonging the service life of the track, and reducing the economic cost of rail transportation.

[0030] Referring to Figures 1-5 The application provides a damping device for rail transportation, comprising: The rail 2 is vertically and slidably connected to the top of the damping seat 1, and a bearing damping assembly is arranged between the rail 2 and the damping seat 1; The two main damping assemblies are arranged on the two sides of the rail 2, and each main damping assembly comprises an eccentric block 8 arranged in the damping seat 1, a rotary driving mechanism arranged between the eccentric block 8 and the bearing damping assembly, the rotary driving mechanism drives the eccentric block 8 to reciprocate when the rail 2 vibrates up and down, and a hydraulic damping mechanism in transmission connection with the rotary driving mechanism, the hydraulic damping mechanism is provided with a secondary damping piece corresponding to the eccentric block 8, and the eccentric block 8 abuts against the secondary damping piece when the amplitude of the rail 2 is large, so as to increase the damping of the hydraulic damping mechanism.

[0031] The bearing damping assembly mainly bears the load applied by the train to the rail 2 and provides preliminary elastic damping; the rotary driving mechanism mainly drives the eccentric block 8 to reciprocate when the rail 2 vibrates, and provides resistance to weaken the vibration by the inertia generated by the rotation of the eccentric block 8; the hydraulic damping mechanism mainly dissipates the energy of the vibration of the rail 2 to achieve damping effect; and the secondary damping piece mainly increases the damping force by extrusion between the eccentric block 8 and the secondary damping piece when the rail 2 has a large amplitude, so as to enhance the damping and damping effect. Overall, the present application combines the eccentric block, the hydraulic damping mechanism and the secondary damping piece, efficiently converts the up-down linear vibration of the rail into the reciprocating swing of the eccentric block and the movement of the piston in the hydraulic damping mechanism, ingeniously transfers the mechanical kinetic energy to the hydraulic system, converts it into heat energy by the flow resistance of the liquid and dissipates it, has high damping efficiency, is particularly effective for inhibiting low-frequency resonance, simultaneously realizes self-adaptive adjustment of the damping performance to the vibration intensity, and effectively copes with the impact generated by the train passing under different loads and speeds.

[0032] Further optimization scheme, the bearing damping assembly comprises a sliding groove 11 opened in the top of the damping seat 1, a connecting plate 3 is vertically and slidably connected in the sliding groove 11, the rail 2 is fixedly connected to the top of the connecting plate 3, and a plurality of bearing springs 10 abut between the bottom of the connecting plate 3 and the bottom of the sliding groove 11.

[0033] As shown in Figure 1 , the plurality of bearing springs 10 provide primary damping for the rail 2, and simultaneously bear the load of the train.

[0034] Further optimization scheme, the rotary driving mechanism comprises a rotating shaft 31 horizontally rotatably connected in the damping seat 1, the eccentric block 8 is fixedly sleeved on the rotating shaft 31, a gear 7 is also fixedly sleeved on the rotating shaft 31, a first gear rack 12 is vertically and fixedly connected to the side wall of the connecting plate 3, and the first gear rack 12 is in engagement with the gear 7.

[0035] As shown in Figure 1 and Figure 2As shown, the side wall of the connecting plate 3 is fixedly connected with a connecting plate 6, and the first rack 12 is fixedly connected to the connecting plate 6. When the track 2 is vibrated up and down under the impact of the train, the first rack 12 will finally move up and down, and drive the gear 7 to reciprocating rotate through the meshing between the gear teeth, and drive the eccentric block 8 to reciprocating swing up and down through the rotating rod 31, and the torque generated by the eccentric block 8 provides resistance for the up and down movement of the connecting plate 3, and weakens the vibration.

[0036] Further optimization scheme, the hydraulic damping mechanism includes a connecting rod 9 vertically slidingly connected in the damping seat 1, a driving member is arranged between the connecting rod 9 and the gear 7, the inner bottom of the damping seat 1 is provided with a first oil chamber 16, a first piston 15 is vertically slidingly connected in the first oil chamber 16, the bottom of the connecting rod 9 is fixedly connected with the top of the first piston 15, the inner top of the damping seat 1 is provided with a second oil chamber 18, a second piston 20 is slidingly connected in the second oil chamber 18, the bottom of the second piston 20 penetrates through the bottom of the second oil chamber 18, and a first damping spring 22 is fixedly connected between the second piston 20 and the second oil chamber 18, and the top of the first oil chamber 16 and the top of the second oil chamber 18 are communicated through an oil channel 17.

[0037] Further optimization scheme, the driving member includes a second rack 13, the side wall of the connecting rod 9 is vertically fixedly connected with the second rack 13, the second rack 13 is engaged with the gear 7, and the second rack 13 and the first rack 12 are located on both sides of the gear 7.

[0038] Further optimization scheme, the diameter of the first piston 15 is greater than the diameter of the second piston 20, so that a larger force is needed to move the first piston 15 to drive the second piston 20, which is beneficial to generate a larger damping force.

[0039] As shown in Figure 1 and Figure 2 shown, in the process of the connecting plate 3 vibrating up and down, the gear 7 is driven to rotate, the gear 7 drives the second rack 13, the second rack 13 drives the connecting rod 9 to reciprocating move up and down, thereby driving the first piston 15 to reciprocating move up and down. In this embodiment, the downward movement of the connecting plate 3 drives the upward movement of the connecting rod 9, thereby extruding the hydraulic oil in the first oil chamber 16, and pushing the second piston 20 outward through the oil channel 17, stretching the first damping spring 22, and further generating a damping force to achieve a damping effect.

[0040] Further optimization scheme, the top of the second piston 20 is fixedly connected with a light rod 21, and the light rod 21 is slidingly connected in the second oil chamber 18, thereby improving the movement stability of the second piston 20.

[0041] Further optimization scheme, the secondary damping member includes a secondary abutting block 19 connected to the bottom of the second piston 20 along the axis of the second oil chamber 18, a second damping spring 24 is in abutment between the top of the secondary abutting block 19 and the second piston 20, the secondary abutting block 19 is located above the eccentric block 8 and is arranged correspondingly with the eccentric block 8.

[0042] As shown in Figure 1 , Figure 2 and Figure 5 , when the connecting plate 3 is excited to produce a larger amplitude, the swing amplitude of the eccentric block 8 increases, and during the downward movement of the connecting plate 3, the eccentric block 8 swings upward to contact the secondary abutting block 19, and as the connecting plate 3 continues to move downward, the eccentric block 8 pushes the secondary abutting block 19 inward, and the second piston 20 is pushed inward by the second damping spring 24, so that the upward movement resistance of the first piston 15 increases, and the upward swing resistance of the eccentric block 8 also increases, thereby significantly increasing the rotation resistance of the gear 7, and further increasing the movement resistance of the connecting plate 3, the damping resistance increases, and the effect of self-adaptive adjustment of the damping performance with the vibration intensity is realized.

[0043] Further optimization scheme, the bottom of the secondary abutting block 19 is fixedly connected with a damping pad 23, and the secondary abutting block 19 abuts against the eccentric block 8 through the damping pad 23.

[0044] As shown in Figure 5 , the main function of the damping pad 23 is to avoid rigid collision between the eccentric block 8 and the secondary abutting block 19.

[0045] Further optimization scheme, the connecting rod 9 is provided with a damping adjustment mechanism, the damping adjustment mechanism includes a screw rod 14, a threaded hole is formed in the bottom of the connecting rod 9 upwardly, the screw rod 14 is threadedly connected in the threaded hole, the first piston 15 is rotationally connected to the bottom of the screw rod 14, a spline groove 29 is formed in the top of the screw rod 14 downwardly, a slide rod 30 is arranged in the spline groove 29, the slide rod 30 is connected with the screw rod 14 through the spline groove 29, the top of the slide rod 30 penetrates through the top of the connecting rod 9 and the damping seat 1 and is fixedly connected with the hand wheel 5, and a rotation locking member is arranged between the slide rod 30 and the threaded hole.

[0046] As shown in Figure 2 and Figure 4As shown, in the embodiment, the bottom of the slide rod 30 is provided with a connecting key matched with the spline groove 29, so that the slide rod 30 can drive the screw rod 14 to rotate and move along the axis of the screw rod 14. When it is needed to increase the initial damping force of the connecting rod 9, the hand wheel 5 is rotated to drive the slide rod 30 to rotate, the screw rod 14 is driven to rotate by the slide rod 30, the screw rod 14 is driven to move upward relative to the connecting rod 9 under the threaded transmission, the first piston 15 is driven to move upward, the space in the first oil pressure cavity 16 is compressed, and the second piston 20 is driven to move outward appropriately, so that the first damping spring 22 is stretched appropriately, thereby increasing the initial damping force. Similarly, the hand wheel 5 is reversely rotated to reduce the initial damping force.

[0047] Further optimization scheme, the rotating locking part includes a support disc 25 fixedly sleeved on the slide rod 30, a plurality of clamping blocks 26 are fixedly connected to the top of the support disc 25, a plurality of clamping grooves 27 are formed in the top of the threaded hole, the plurality of clamping blocks 26 are matched with the plurality of clamping grooves 27, and a support ring is fixedly connected to the side wall of the threaded hole and located above the screw rod 14. The spring 28 abuts between the support ring and the support disc 25.

[0048] As shown in the drawings, Figure 4 In the embodiment, the top of the support disc 25 is fixedly connected with four groups of clamping blocks 26 at equal intervals, and four groups of clamping grooves 27 are correspondingly arranged in the threaded hole at equal intervals. The number of clamping blocks 26 and clamping grooves 27 can be increased or decreased according to engineering requirements. If the hand wheel 5 needs to be rotated, the hand wheel 5 is first pressed downward to drive the slide rod 30 to move downward, drive the support disc 25 to move downward and compress the spring 28, and drive the clamping blocks 26 to move downward synchronously and disengage from the clamping grooves 27. At this time, the hand wheel 5 can drive the slide rod 30 to rotate freely, drive the screw rod 14 to rotate, and realize the position adjustment of the first piston 15. When the adjustment is completed, the pressure on the hand wheel 5 is released, the support disc 25 is pushed upward by the spring 28, and the hand wheel is appropriately rotated. Each clamping block 26 can be aligned with each clamping groove 27, the clamping block 26 can be inserted into the clamping groove 27, at this time, the support disc 25 cannot be rotated, and the rotation of the screw rod 14 is also limited, so that the initial position of the first piston 15 is stable.

[0049] Further optimization scheme, as shown in the drawings, Figure 1 The track 2 and the damping seat 1 are fixedly connected through a plurality of connecting bolts 4.

[0050] In the description of the present application, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0051] The above-described embodiments are merely intended to describe the preferred modes of the present application, and are not intended to limit the scope of the present application. Various modifications and improvements of the present application made by those skilled in the art, without departing from the design spirit of the present application, shall fall within the scope of the present application as defined by the claims.

Claims

1. A vibration damping device for rail transit, characterized in that, include: Vibration damping seat (1), the top of the vibration damping seat (1) is vertically slidably connected to a rail (2), and a bearing vibration damping component is provided between the rail (2) and the vibration damping seat (1); Two sets of main vibration damping components are respectively arranged on both sides of the track (2). The main vibration damping components include an eccentric block (8) arranged in the vibration damping seat (1). A rotary drive mechanism is arranged between the eccentric block (8) and the bearing vibration damping component. When the track (2) vibrates up and down, the rotary drive mechanism drives the eccentric block (8) to swing back and forth. It also includes a hydraulic vibration damping mechanism. The hydraulic vibration damping mechanism is connected to the rotary drive mechanism. A secondary vibration damping component is arranged in the hydraulic vibration damping mechanism. The secondary vibration damping component is arranged corresponding to the eccentric block (8). When the amplitude of the track (2) is too large, the eccentric block (8) abuts against the secondary vibration damping component to increase the damping of the hydraulic vibration damping mechanism.

2. The vibration damping device for rail transit according to claim 1, characterized in that: The bearing vibration damping assembly includes a groove (11) opened on the top of the vibration damping seat (1), a connecting plate (3) is vertically slidably connected in the groove (11), the track (2) is fixedly connected to the top of the connecting plate (3), and a number of bearing springs (10) abut against the bottom of the connecting plate (3) and the bottom of the groove (11).

3. A vibration damping device for rail transit according to claim 2, characterized in that: The rotary drive mechanism includes a rotating rod (31) that is horizontally rotatably connected in the damping seat (1), an eccentric block (8) that is fixedly sleeved on the rotating rod (31), a gear (7) that is also fixedly sleeved on the rotating rod (31), and a first rack (12) that is vertically fixedly connected to the side wall of the connecting plate (3), the first rack (12) meshing with the gear (7).

4. A vibration damping device for rail transit according to claim 3, characterized in that: The hydraulic damping mechanism includes a connecting rod (9) that is vertically slidably connected in the damping seat (1). A driving component is provided between the connecting rod (9) and the gear (7). A first hydraulic chamber (16) is provided at the bottom inner side of the damping seat (1). A first piston (15) is vertically slidably connected in the first hydraulic chamber (16). The bottom of the connecting rod (9) is fixedly connected to the top of the first piston (15). A second hydraulic chamber (18) is opened at the top inner side of the damping seat (1). A second piston (20) is slidably connected in the second hydraulic chamber (18). The bottom of the second piston (20) penetrates the bottom of the second hydraulic chamber (18). A first damping spring (22) is fixedly connected between the second piston (20) and the second hydraulic chamber (18). The top of the first hydraulic chamber (16) and the top of the second hydraulic chamber (18) are connected through an oil passage (17).

5. A vibration damping device for rail transit according to claim 4, characterized in that: The driving component includes a second rack (13), which is vertically fixedly connected to the side wall of the connecting rod (9). The second rack (13) meshes with the gear (7), and the second rack (13) and the first rack (12) are located on both sides of the gear (7).

6. A vibration damping device for rail transit according to claim 4, characterized in that: The secondary damping component includes a secondary abutment block (19) that is slidably connected to the bottom of the second piston (20) along the axis of the second hydraulic chamber (18). A second damping spring (24) abuts between the top of the secondary abutment block (19) and the second piston (20). The secondary abutment block (19) is located above the eccentric block (8) and is correspondingly arranged with the eccentric block (8).

7. A vibration damping device for rail transit according to claim 6, characterized in that: The bottom of the secondary abutment block (19) is fixedly connected to a vibration damping pad (23), and the secondary abutment block (19) abuts against the eccentric block (8) through the vibration damping pad (23).

8. A vibration damping device for rail transit according to claim 4, characterized in that: The connecting rod (9) is provided with a damping adjustment mechanism, which includes a screw (14). The bottom of the connecting rod (9) is provided with a threaded hole facing upwards. The screw (14) is threadedly connected to the threaded hole. The first piston (15) is rotatably connected to the bottom of the screw (14). The top of the screw (14) is provided with a spline groove (29) facing downwards. A slide rod (30) is provided in the spline groove (29). The slide rod (30) is connected to the screw (14) through the spline groove (29). The top of the slide rod (30) passes through the top of the connecting rod (9) and the damping seat (1) and is fixedly connected to a handwheel (5). A rotation locking element is provided between the slide rod (30) and the threaded hole.

9. A vibration damping device for rail transit according to claim 8, characterized in that: The rotating locking component includes a support plate (25) fixedly sleeved on the slide rod (30). A number of locking blocks (26) are fixedly connected to the top of the support plate (25). A number of slots (27) are opened at the top of the threaded hole. The locking blocks (26) and the slots (27) are adapted to each other. A support ring is fixedly connected to the side wall of the threaded hole. The support ring is located above the screw (14). A spring (28) abuts between the support ring and the support plate (25).

10. A vibration damping device for rail transit according to claim 1, characterized in that: The track (2) and the vibration damping seat (1) are fixedly connected by several connecting bolts (4).

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