CN213685099U - Multi-functional subway track damping device that makes an uproar that falls - Google Patents
Multi-functional subway track damping device that makes an uproar that falls Download PDFInfo
- Publication number
- CN213685099U CN213685099U CN202022813058.1U CN202022813058U CN213685099U CN 213685099 U CN213685099 U CN 213685099U CN 202022813058 U CN202022813058 U CN 202022813058U CN 213685099 U CN213685099 U CN 213685099U
- Authority
- CN
- China
- Prior art keywords
- noise
- adjusting
- subway
- screw rod
- shock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Railway Tracks (AREA)
Abstract
The utility model provides a multifunctional subway track noise-reducing and shock-absorbing device, which comprises a subway track body, a sleeper base, a fixing bolt, a clamping seat, an adjusting screw, a linking seat, an internal thread hole, an adjusting cap, an adjusting hole, a spring washer, a fastening nut, a buffer frame structure with adjustable damping amplitude, a noise-reducing and sound-absorbing protective block structure and an anti-shaking supporting and protecting rod structure, wherein the subway track body is arranged at the middle part of the upper part of the sleeper base and is fastened and connected through the fixing bolt; clamping seats are arranged at the left end and the right end of the lower part of the subway rail body; the inner bearing of the clamping seat is connected with the inner end of the adjusting screw rod; the adjusting screw rod is transversely in threaded connection with an internal threaded hole formed in the connecting seat. The utility model discloses damping spring, damping screw, stay tube, adjusting nut, support frame and firm base's setting are favorable to playing good cushioning effect, guarantee the job stabilization nature of subway track body.
Description
Technical Field
The utility model belongs to the technical field of the track traffic, especially, relate to a multi-functional subway track damping device that makes an uproar that falls.
Background
In subway rail transit, a certain amount of impact energy is generated in the contact process of wheels and rails, and the influence of generated vibration and noise on the surrounding environment and buildings is inevitable.
Currently, to reduce vibration and noise during vehicle travel, rubber or springs are typically padded under the rails.
But the existing noise reduction damping device also has the problems that the damping amplitude can not be adjusted, the noise reduction effect is poor and the mounting support is unstable.
Therefore, the multifunctional subway rail noise reduction and shock absorption device is very necessary.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a multi-functional subway track damping device of making an uproar falls to solve current damping device of making an uproar and existing unable adjustment damper, the effect of making an uproar falls poor and the unstable problem of erection bracing. A multifunctional subway track noise and shock reducing device comprises a subway track body, a sleeper base, fixing bolts, a clamping seat, adjusting screws, a connecting seat, an internal thread hole, an adjusting cap, adjusting holes, spring washers, fastening nuts, a shock-absorbing amplitude-adjustable buffer frame structure, a noise-reducing and sound-absorbing protective block structure and an anti-shaking supporting and protecting rod structure, wherein the subway track body is arranged in the middle of the upper part of the sleeper base and is fastened and connected through the fixing bolts; clamping seats are arranged at the left end and the right end of the lower part of the subway rail body; the inner bearing of the clamping seat is connected with the inner end of the adjusting screw rod; the adjusting screw rod is transversely screwed in an internal thread hole formed in the connecting seat; the outer end key of the adjusting screw rod is connected with an adjusting cap; the inside of the adjusting cap is provided with an adjusting hole; the spring washer is arranged between the fastening nut and the connecting seat; the spring cushion ring is sleeved on the outer wall of the adjusting screw rod; the fastening nut is in threaded connection with the adjusting screw; the damping amplitude adjustable buffer frame structure is connected with the noise reduction and sound absorption protective block structure; the shock absorption amplitude adjustable buffer frame structure is connected with the anti-shaking support guard bar structure; the damping amplitude adjustable buffer frame structure comprises a damping spring, a damping screw rod, a supporting tube, an adjusting nut, a supporting frame and a stable base, wherein the damping spring is longitudinally sleeved on the outer wall of the upper part of the damping screw rod; the damping screw rod is longitudinally inserted in the supporting tube; the adjusting nut is in threaded connection with the outer wall of the damping screw rod and is positioned at the lower end of the supporting tube; two the support frame homogeneous end bolted connection stabilize the upper portion left and right sides of base, the equal bolted connection left and right sides of stay tube of the other end.
Preferably, the noise reduction and sound absorption protection block structure comprises a noise reduction block, a buffer spring, a fixed support, a mounting hole, a mounting bolt and a noise reduction protection plate, wherein one end of the buffer spring is longitudinally connected with the lower end of the noise reduction block by a bolt, and the other end of the buffer spring is connected with the middle part of the upper part of the fixed support by a bolt; mounting bolts are longitudinally inserted in mounting holes formed in four corners inside the fixed support; two the guard plate of making an uproar that falls sets up in the left and right sides of inhaling the sound and falling the piece of making an uproar, and set up with fixing support bolted connection.
Preferably, the anti-shaking supporting guard bar structure comprises an anti-shaking supporting bar, an anti-shaking branch pipe, a connecting seat, a connecting guard plate and a connecting bolt, wherein the anti-shaking supporting bar is longitudinally inserted into the anti-shaking branch pipe; the longitudinal lower end of the anti-shaking branch pipe is in threaded connection with the middle part of the upper part of the connecting seat; the inner side of the upper part of the connecting seat is provided with a connecting guard plate which is fastened and connected through a connecting bolt.
Preferably, the damping spring is a stainless steel cylindrical spring, and the damping screw is a stainless steel screw.
Preferably, the upper end of the damping screw in the longitudinal direction is in bolted connection with the middle part of the lower part of the sleeper base.
Preferably, the sound absorption and noise reduction block is arranged opposite to and matched with the lower end of the damping screw rod.
Preferably, the fixing support is arranged at the middle part of the upper part of the stabilizing base and is fastened and connected through a mounting bolt.
Preferably, the anti-shaking supporting rods are all connected to the four corners of the bottom of the sleeper base through bolts at the longitudinal upper ends.
Preferably, the connecting guard plates are connected with the left side and the right side of the upper part of the stable base through connecting bolts.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses in, damping spring, damping screw, stay tube, adjusting nut, support frame and firm base's setting are favorable to playing good cushioning effect, guarantee the job stabilization nature of subway track body.
2. The utility model discloses in, inhale the sound and fall the piece of making an uproar, buffer spring, fixing support, the mounting hole, the construction bolt with fall the setting of making an uproar guard plate, be favorable to playing the good effect of making an uproar of falling, avoid noise pollution.
3. The utility model discloses in, prevent shaking branch, prevent shaking the branch pipe, the connecting seat links up backplate and connecting bolt's setting, is favorable to playing good the supporting role that prevents shaking, guarantees the job stabilization nature of subway track body, increases protection support function.
4. The utility model discloses in, subway track body, sleeper base and fixing bolt's setting, be favorable to the installation to dismantle, convenient maintenance.
5. The utility model discloses in, cassette, adjusting screw, link up the seat, the internal thread hole, the setting of adjusting cap and regulation hole is favorable to the subway track body of the different models of fixed centre gripping, is convenient for install.
6. The utility model discloses in, spring washer and fastening nut's setting, be favorable to playing the locking effect, guarantee clamping stability, increase the locking function.
7. The utility model discloses in, the setting of the guard plate of making an uproar falls, be favorable to playing good noise reduction and inhale the sound effect.
8. The utility model discloses in, linking up backplate and connecting bolt's setting, be favorable to connecting fixedly, be convenient for maintain.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the shock-absorbing amplitude adjustable buffer frame structure of the present invention.
Fig. 3 is a schematic structural view of the noise reduction and sound absorption block structure of the present invention.
Fig. 4 is a schematic structural view of the anti-shaking support guard bar structure of the present invention.
In the figure:
1. a subway rail body; 2. a sleeper base; 3. fixing the bolt; 4. a card holder; 5. adjusting the screw rod; 6. a linking seat; 7. an internally threaded bore; 8. an adjusting cap; 9. an adjustment hole; 10. a spring washer; 11. fastening a nut; 12. the damping amplitude is adjustable and the buffer frame is structured; 121. a damping spring; 122. a damping screw; 123. supporting a tube; 124. adjusting the nut; 125. a support frame; 126. a stable base; 13. noise reduction and sound absorption protection block structure; 131. a sound-absorbing noise-reducing block; 132. a buffer spring; 133. a fixed support; 134. mounting holes; 135. installing a bolt; 136. a noise reduction protection plate; 14. a shake-proof support guard bar structure; 141. an anti-sway strut; 142. an anti-sloshing branch pipe; 143. a connecting seat; 144. connecting the guard plates; 145. and connecting the bolts.
Detailed Description
The utility model is described in detail with reference to the accompanying drawings, as shown in fig. 1 and fig. 2, a multifunctional subway rail noise-reducing and shock-absorbing device comprises a subway rail body 1, a sleeper base 2, a fixing bolt 3, a clamping seat 4, an adjusting screw 5, a connecting seat 6, an internal thread hole 7, an adjusting cap 8, an adjusting hole 9, a spring washer 10, a fastening nut 11, a shock-absorbing amplitude-adjustable buffer frame structure 12, a noise-reducing and sound-absorbing protective block structure 13 and an anti-shaking supporting and protective rod structure 14, wherein the subway rail body 1 is arranged in the middle of the upper part of the sleeper base 2 and is fastened and connected with the fixing bolt 3; the clamping seats 4 are arranged at the left end and the right end of the lower part of the subway rail body 1; the inner bearing of the clamping seat 4 is connected with the inner end of the adjusting screw rod 5; the adjusting screw rod 5 is transversely screwed in an internal thread hole 7 formed in the connecting seat 6; the outer end key of the adjusting screw 5 is connected with an adjusting cap 8; the inside of the adjusting cap 8 is provided with an adjusting hole 9; the spring washer 10 is arranged between the fastening nut 11 and the connecting seat 6; the spring washer 10 is sleeved on the outer wall of the adjusting screw rod 5; the fastening nut 11 and the adjusting screw rod 5 are in threaded connection; the damping amplitude adjustable buffer frame structure 12 is connected with the noise reduction and sound absorption protective block structure 13; the damping amplitude adjustable buffer frame structure 12 is connected with the anti-shaking supporting guard bar structure 14; the shock absorption amplitude adjustable buffer frame structure 12 comprises a shock absorption spring 121, a shock absorption screw 122, a support tube 123, an adjusting nut 124, a support frame 125 and a stable base 126, wherein the shock absorption spring 121 is longitudinally sleeved on the outer wall of the upper part of the shock absorption screw 122; the damping screw 122 is longitudinally inserted into the supporting tube 123; the adjusting nut 124 is in threaded connection with the outer wall of the damping screw 122 and is positioned at the lower end of the supporting pipe 123; two the upper portion left and right sides of support frame 125 homogeneous end bolted connection firm base 126, the left and right sides of the equal bolted connection stay tube 123 of the other end, when local rail way body 1 takes place vibrations, can make sleeper base 2 drive damping screw 122 at damping spring 121 and the inside action of stay tube 123, can play good cushioning effect, simultaneously through rotation regulation adjusting nut 124, can carry out the work of shock attenuation range regulation, and then guarantee the shock attenuation effect, can guarantee support stability through support frame 125 and firm base 126.
In this embodiment, referring to fig. 3, the noise reduction and absorption block structure 13 includes a noise reduction block 131, a buffer spring 132, a fixing support 133, a mounting hole 134, a mounting bolt 135 and a noise reduction protection plate 136, wherein one end of the buffer spring 132 is connected to the lower end of the noise reduction block 131, and the other end is connected to the middle of the upper portion of the fixing support 133; mounting bolts 135 are longitudinally inserted into mounting holes 134 formed in four corners inside the fixed support 133; two the guard plate 136 of making an uproar of falling set up in the left and right sides of inhaling the sound and making an uproar piece 131, and set up with fixing support 133 bolted connection, when damping screw 122 moves down, can send the noise, the accessible is inhaled the sound and is made an uproar piece 131 and cushion and offset this moment to cushion through buffer spring 132, inhale the sound through the guard plate 136 of making an uproar of falling simultaneously and fall, avoid noise pollution.
In this embodiment, referring to fig. 4, the anti-sway supporting guard bar structure 14 includes an anti-sway supporting bar 141, an anti-sway branch pipe 142, a connecting seat 143, a connecting guard plate 144 and a connecting bolt 145, wherein the anti-sway supporting bar 141 is longitudinally inserted into the anti-sway branch pipe 142; the lower end of the anti-shaking branch pipe 142 in the longitudinal direction is in threaded connection with the middle part of the upper part of the connecting seat 143; the inner side of the upper part of the connecting seat 143 is provided with a connecting guard plate 144, and the connecting guard plate is fastened and connected by a connecting bolt 145, when the sleeper base 2 moves downwards, the anti-shaking supporting rod 141 can move in the anti-shaking branch pipe 142, the supporting stability can be ensured, the deflection can be avoided, and the connecting seat 143, the connecting guard plate 144 and the connecting bolt 145 are matched, so that the installation and the connection can be carried out, and the maintenance is convenient.
In this embodiment, specifically, the damping spring 121 is a stainless steel cylindrical spring, and the damping screw 122 is a stainless steel screw.
In this embodiment, specifically, the upper end of the damping screw 122 in the longitudinal direction is bolted to the middle of the lower part of the sleeper base 2.
In this embodiment, the lower ends of the sound-absorbing and noise-reducing block 131 and the damping screw 122 are disposed opposite to each other in a matching manner.
In this embodiment, specifically, the fixing support 133 is disposed at the middle portion of the upper portion of the fixing base 126 and is fastened and connected by a mounting bolt 135.
In this embodiment, specifically, the anti-shaking support rods 141 are all bolted to the four corners of the bottom of the sleeper base 2 at the upper ends in the longitudinal direction.
In this embodiment, specifically, the connecting guard plates 144 are connected to the left and right sides of the upper portion of the stable base 126 through connecting bolts 145.
In this embodiment, specifically, the sound-absorbing and noise-reducing block 131 is a rubber damping block.
In this embodiment, specifically, the buffer spring 132 is a cylindrical stainless steel spring.
In this embodiment, specifically, the noise reduction protection plate 136 is a felt plate.
In this embodiment, the anti-shaking support rod 141 is a plurality of aluminum alloy rods, and the anti-shaking branch pipe 142 is a plurality of aluminum alloy pipes.
In this embodiment, specifically, the joining seats 6 are respectively connected to the left and right sides of the upper portion of the sleeper base 2 by longitudinal lower end bolts, and the clamping seats 4 are inner arc-shaped aluminum alloy seats.
Principle of operation
In the utility model, when the local railway track body 1 vibrates, the sleeper base 2 can drive the damping screw 122 to act in the damping spring 121 and the supporting tube 123, which can play a good damping role, and simultaneously, the damping amplitude can be adjusted through the rotation adjusting nut 124, thereby ensuring the damping effect, the supporting stability can be ensured through the supporting frame 125 and the stabilizing base 126, when the damping screw 122 moves down, the noise can be generated, at the moment, the damping can be counteracted through the sound absorption and noise reduction block 131, and the buffering can be realized through the damping spring 132, meanwhile, the sound absorption and noise reduction can be realized through the noise reduction protection plate 136, the noise pollution can be avoided, when the sleeper base 2 moves down, the anti-sway supporting rod 141 can act in the anti-sway branch pipe 142, the supporting stability can be ensured, the deflection can be avoided, through the connecting seat 143, the cooperation between the protection plate 144 and the connecting bolt 145 is linked, can be installed and connected, and is convenient to maintain.
Utilize technical scheme, or technical personnel in the field are in the utility model discloses under technical scheme's the inspiration, design similar technical scheme, and reach above-mentioned technological effect, all fall into the utility model discloses a protection scope.
Claims (9)
1. A multifunctional subway track noise and shock reduction device is characterized by comprising a subway track body (1), a sleeper base (2), fixing bolts (3), a clamping seat (4), adjusting screws (5), a connecting seat (6), an internal thread hole (7), an adjusting cap (8), adjusting holes (9), a spring washer (10), fastening nuts (11), a shock absorption amplitude adjustable buffer frame structure (12), a noise reduction and sound absorption protective block structure (13) and an anti-shaking supporting protective rod structure (14), wherein the subway track body (1) is arranged in the middle of the upper portion of the sleeper base (2) and is fixedly connected and arranged through the fixing bolts (3); clamping seats (4) are arranged at the left end and the right end of the lower part of the subway rail body (1); the inner bearing of the clamping seat (4) is connected with the inner end of the adjusting screw rod (5); the adjusting screw rod (5) is transversely in threaded connection with an internal threaded hole (7) formed in the connecting seat (6); the outer end key of the adjusting screw rod (5) is connected with an adjusting cap (8); an adjusting hole (9) is formed in the adjusting cap (8); the spring washer (10) is arranged between the fastening nut (11) and the connecting seat (6); the spring washer (10) is sleeved on the outer wall of the adjusting screw rod (5); the fastening nut (11) and the adjusting screw rod (5) are in threaded connection; the damping amplitude adjustable buffer frame structure (12) is connected with the noise reduction and sound absorption protective block structure (13); the shock absorption amplitude adjustable buffer frame structure (12) is connected with the anti-shaking supporting guard bar structure (14); the shock absorption amplitude adjustable buffer frame structure (12) comprises a shock absorption spring (121), a shock absorption screw rod (122), a supporting pipe (123), an adjusting nut (124), a supporting frame (125) and a stable base (126), wherein the shock absorption spring (121) is longitudinally sleeved on the outer wall of the upper part of the shock absorption screw rod (122); the damping screw rod (122) is longitudinally inserted into the supporting pipe (123); the adjusting nut (124) is in threaded connection with the outer wall of the damping screw rod (122) and is positioned at the lower end of the supporting pipe (123); one end of each of the two support frames (125) is in bolted connection with the left side and the right side of the upper part of the stable base (126), and the other end of each of the two support frames is in bolted connection with the left side and the right side of the support tube (123).
2. The multifunctional noise and vibration reduction device for subway rails as claimed in claim 1, wherein said noise and sound reduction block structure (13) comprises a noise and sound reduction block (131), a buffer spring (132), a fixing support (133), a mounting hole (134), a mounting bolt (135) and a noise and sound reduction protection plate (136), one end of said buffer spring (132) is connected with the lower end of said noise and sound reduction block (131) by a bolt, and the other end is connected with the middle part of the upper part of said fixing support (133) by a bolt; mounting bolts (135) are longitudinally inserted into mounting holes (134) formed in four corners inside the fixed support (133); the two noise reduction protection plates (136) are arranged on the left side and the right side of the sound absorption and noise reduction block (131) and are connected with the fixed support (133) through bolts.
3. The multifunctional noise and shock reducing device for the subway rail as claimed in claim 1, wherein said anti-sloshing supporting guard bar structure (14) comprises an anti-sloshing support bar (141), an anti-sloshing branch pipe (142), a connecting base (143), a connecting guard plate (144) and a connecting bolt (145), said anti-sloshing support bar (141) being inserted longitudinally inside the anti-sloshing branch pipe (142); the lower end of the anti-shaking branch pipe (142) in the longitudinal direction is in threaded connection with the middle part of the upper part of the connecting seat (143); the inner side of the upper part of the connecting seat (143) is provided with a connecting guard plate (144) which is fastened and connected through a connecting bolt (145).
4. A multifunctional noise and shock reducing device for subway rails as claimed in claim 1, wherein said shock reducing spring (121) is stainless steel cylindrical spring, and said shock reducing screw (122) is stainless steel screw.
5. A multifunctional noise and shock reducing device for subway rails as claimed in claim 1, wherein said shock reducing screw rod (122) is bolted to the middle of the lower part of the sleeper base (2) at its upper longitudinal end.
6. A multifunctional noise and shock reducing device for subway rails as claimed in claim 2, wherein said noise and noise reducing block (131) and said damping screw (122) are disposed in a face-to-face fit.
7. A multifunctional noise and vibration reduction device for subway rails as claimed in claim 2, wherein said fixing support (133) is installed at the middle of the upper portion of said fixing base (126) and fastened and connected by means of mounting bolts (135).
8. A multifunctional noise and shock reducing device for subway rails as claimed in claim 3, wherein said anti-sway struts (141) are bolted to the four corners of the bottom of the sleeper base (2) at their upper longitudinal ends.
9. A multifunctional noise and shock reducing device for subway rails as claimed in claim 3, wherein said connecting plates (144) are connected to the left and right sides of the upper portion of said stable base (126) by means of connecting bolts (145).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022813058.1U CN213685099U (en) | 2020-11-27 | 2020-11-27 | Multi-functional subway track damping device that makes an uproar that falls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022813058.1U CN213685099U (en) | 2020-11-27 | 2020-11-27 | Multi-functional subway track damping device that makes an uproar that falls |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213685099U true CN213685099U (en) | 2021-07-13 |
Family
ID=76736587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022813058.1U Active CN213685099U (en) | 2020-11-27 | 2020-11-27 | Multi-functional subway track damping device that makes an uproar that falls |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213685099U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847374A (en) * | 2021-10-15 | 2021-12-28 | 东台市海迅铁路配件有限公司 | Railway rubber vibration isolator structure achieving long service life based on new materials |
| CN115931097A (en) * | 2022-12-13 | 2023-04-07 | 吉林铁道职业技术学院 | Railway vehicle overload and unbalance load detection device and method thereof |
-
2020
- 2020-11-27 CN CN202022813058.1U patent/CN213685099U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847374A (en) * | 2021-10-15 | 2021-12-28 | 东台市海迅铁路配件有限公司 | Railway rubber vibration isolator structure achieving long service life based on new materials |
| CN115931097A (en) * | 2022-12-13 | 2023-04-07 | 吉林铁道职业技术学院 | Railway vehicle overload and unbalance load detection device and method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213685099U (en) | Multi-functional subway track damping device that makes an uproar that falls | |
| CN201746746U (en) | Hydraulic damping steel spring vibration isolator for floating slab track of track traffic | |
| CN201738195U (en) | Composite damper spring vibration isolator for floating slab tracks in rail transit | |
| CN210797253U (en) | Public road bridge roof beam shock-absorbing support based on bridge security performance | |
| CN105351442A (en) | Inerter and rubber composite absorber with broadband shock absorption performance | |
| CN105156578B (en) | Vertical adjustable tuned mass damper, TMD | |
| CN206485396U (en) | A kind of follow-on electric scooter chassis | |
| CN211947715U (en) | Passive dynamic vibration absorption type floating slab track structure containing negative rigidity | |
| CN116446266A (en) | Beam falling prevention damping device and beam falling prevention damping system | |
| CN213538763U (en) | Flexible height limiting frame for municipal roads | |
| CN212605494U (en) | Rear support assembly for supporting automobile cab | |
| CN211665561U (en) | Damping support for bridge railway | |
| CN220640995U (en) | A mounting fixture for generator transportation | |
| CN113005826A (en) | Design method of full-frequency vibration reduction track structure | |
| CN213625181U (en) | Novel bridge supporting member | |
| CN214197576U (en) | Wrap angle for anti-seismic support and anti-seismic support | |
| CN216768204U (en) | Novel rubber shock absorber | |
| CN205614606U (en) | Strike vibration damper of pneumatic hammer | |
| CN219157298U (en) | Track shock attenuation fastener that stability is good | |
| CN217873980U (en) | Vibration reduction mechanism of generator set | |
| CN218812910U (en) | Quick strutting arrangement of underground rail transit | |
| CN215714296U (en) | Shock-absorbing base for rail transit with good anti-seismic performance | |
| CN220079705U (en) | Shock absorbing and isolating support with hydraulic damping | |
| CN220377506U (en) | Easy-to-disassemble ceiling support rod structure | |
| CN219604053U (en) | Rail transit vibration damping buckle device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |