CN214573285U - Bridge shock-absorbing structure - Google Patents
Bridge shock-absorbing structure Download PDFInfo
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- CN214573285U CN214573285U CN202120576385.1U CN202120576385U CN214573285U CN 214573285 U CN214573285 U CN 214573285U CN 202120576385 U CN202120576385 U CN 202120576385U CN 214573285 U CN214573285 U CN 214573285U
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- fixedly connected
- block
- damping
- sliding
- supporting block
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- 238000013016 damping Methods 0.000 claims abstract description 89
- 230000035939 shock Effects 0.000 claims description 24
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 230000001174 ascending effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- 230000003139 buffering effect Effects 0.000 description 3
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
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Abstract
The utility model discloses a bridge damping structure, which comprises a top plate, wherein the bottom end of the top plate is fixedly connected with at least four first damping parts; the bottom end of the first damping part is fixedly connected with a first supporting block; a box body is arranged below the first supporting block, and the top end of the box body is provided with an opening; the box is internally provided with a second supporting block, the bottom end of the second supporting block is fixedly connected with a third supporting block, a first groove is formed in the bottom end of the second supporting block and the bottom end of the box body, a second damping portion is arranged in the first groove, the bottom end of the first supporting block is hinged to a connecting rod, the tail end of the connecting rod is hinged to the second damping portion at the top end of the second supporting block, and the third supporting block is connected with the box body through the second damping portion at the bottom end of the box body. The utility model discloses be provided with multistage damper, not only can cushion the ascending vibration of vertical direction, can also cushion horizontal vibrating, the effectual reliability that improves the bridge.
Description
Technical Field
The utility model relates to a bridge building technical field especially relates to a bridge shock-absorbing structure.
Background
The bridge is generally a structure which is erected on rivers, lakes and seas and allows vehicles, pedestrians and the like to smoothly pass through. In the technical field of bridge construction, a bridge damping structure is required to be arranged between a bridge pier and a bridge body to buffer the impact on the bridge, so that the reliability of the bridge is improved.
But current bridge shock-absorbing structure is comparatively single and the shock attenuation effect is unsatisfactory, does not have all the other buffer parts to continue to provide the buffering for the bridge when certain shock attenuation portion became invalid moreover, has very big potential safety hazard, for this reason we provide a bridge shock-absorbing structure and solve this type of problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a bridge shock-absorbing structure to solve the problem that above-mentioned prior art exists.
In order to achieve the above object, the utility model provides a following scheme: the utility model provides a bridge damping structure, which comprises a top plate, wherein the bottom end of the top plate is fixedly connected with at least four first damping parts; the bottom end of the first damping part is fixedly connected with a first supporting block; a box body is arranged below the first supporting block, and the top end of the box body is provided with an opening; the box body is internally provided with a second supporting block, the bottom end of the second supporting block is fixedly connected with a third supporting block, first grooves are formed in the bottom ends of the second supporting block and the box body, a second damping portion is arranged in each first groove, the bottom end of each first supporting block is hinged with a connecting rod, the tail end of each connecting rod is hinged with the second damping portion located at the top end of the corresponding second supporting block, and the third supporting block is connected with the box body through the second damping portion at the bottom end of the box body.
Preferably, the first damping part comprises a barrel body fixedly connected with the first supporting block, a sliding cap is slidably sleeved on the outer wall of the top of the barrel body, and the sliding cap is fixedly connected with the top plate; a main hydraulic rod is fixedly connected to the inner wall of the bottom end of the barrel body, and the tail end of the main hydraulic rod is fixedly connected with the sliding cap; a fifth spring is sleeved on the main hydraulic rod, and two ends of the fifth spring are fixedly connected with the barrel body and the sliding cap respectively; auxiliary hydraulic rods are arranged on two sides of the main hydraulic rod, the bottom ends of the auxiliary hydraulic rods are fixedly connected with the barrel body, and bulges are fixedly arranged at the top ends of the auxiliary hydraulic rods; a sixth spring is sleeved on the auxiliary hydraulic rod, and two ends of the sixth spring are respectively fixedly connected with the barrel body and the bulge; and a third damping rod is fixedly connected to the inner wall of the top end of the sliding cap, and the third damping rod is arranged corresponding to the auxiliary hydraulic rod.
Preferably, the inner wall of the bottom of the sliding cap is rotatably connected with a sliding ball, and the sliding cap is slidably connected with the barrel body through the sliding ball.
Preferably, the second damping portion comprises a first sliding block, a first sliding rod is fixedly connected in the first groove, and the first sliding block is sleeved on the first sliding rod in a sliding manner; second springs are arranged on two sides of the first sliding block and sleeved on the first sliding rod, and two ends of each second spring are fixedly connected with the inner wall of the first groove and the side wall of the first sliding block respectively; the top end of the first sliding block positioned at the top end of the second supporting block is hinged with a connecting rod, and the tail end of the connecting rod is hinged with the first supporting block; the top end of the first sliding block positioned at the bottom end of the box body is fixedly connected with a first supporting rod, and the tail end of the first supporting rod is fixedly connected with the third supporting block.
Preferably, a third damping part is arranged between the box body and the third supporting block, and the third damping part comprises an apex fixedly connected with the box body; second fixed blocks are symmetrically arranged on two sides of the center and fixedly connected with the third supporting block; one side of the second fixed block, which is close to the tip, is provided with a sliding block, the sliding block is connected with the third supporting block in a sliding manner, and two adjacent sliding blocks are in clearance fit; a second damping rod is fixedly connected to the sliding block, and the tail end of the second damping rod penetrates through the second fixed block and is fixedly connected with a limiting block; and a fourth spring is sleeved on the second damping rod, and two ends of the fourth spring are respectively fixedly connected with the second fixed block and the sliding block.
Preferably, a fourth damping part is arranged on one side, far away from the center, of the second fixing block, and the fourth damping part comprises a U-shaped groove fixedly connected with the side wall of the third supporting block; the inner wall of the box body is fixedly connected with a first damping rod, and the tail end of the first damping rod is inserted into the U-shaped groove; and a first spring is arranged in the U-shaped groove, and two ends of the first spring are fixedly connected with the inner wall of the U-shaped groove and the first damping rod respectively.
Preferably, the bottom end of the top plate is fixedly connected with a first fixed block, and a first permanent magnet is fixedly embedded in the bottom end of the first fixed block; a second groove is formed in the top end of the first supporting block, and a second permanent magnet is fixedly connected to the bottom end of the second groove; the first fixing block and the second groove are correspondingly arranged.
Preferably, first damping blocks are fixedly arranged on two sides of the second supporting block, a second damping block is fixedly connected to the inner wall of the box body, and the second damping block corresponds to the first damping block.
The utility model discloses a following technological effect:
the utility model discloses be provided with multistage damper, not only can cushion the ascending vibration of vertical direction, can also cushion horizontal vibrating, the effectual reliability that improves the bridge.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural view of a bridge damping structure of the present invention;
FIG. 2 is an enlarged view of A in FIG. 1;
FIG. 3 is an enlarged view of B in FIG. 1;
FIG. 4 is an enlarged view of C in FIG. 1;
FIG. 5 is an enlarged view of D in FIG. 1;
fig. 6 is a top view of the top plate of the present invention;
wherein, 1 is a top plate, 2 is a first fixed block, 3 is a first supporting block, 4 is a first permanent magnet, 5 is a connecting rod, 6 is a second supporting block, 7 is a U-shaped groove, 8 is a first damping rod, 9 is a first spring, 10 is a box body, 11 is a third supporting block, 12 is a second supporting rod, 14 is a second damping block, 15 is a first damping block, 16 is a bolt hole, 17 is a second permanent magnet, 19 is a first supporting rod, 20 is a first slider, 21 is a second spring, 22 is a first sliding rod, 23 is a tip, 24 is a second fixed block, 25 is a sliding block, 26 is a second damping rod, 27 is a fourth spring, 31 is a sliding cap, 32 is a third damping rod, 33 is a sliding ball, 34 is a barrel body, 35 is an auxiliary hydraulic rod, 36 is a sixth spring, 37 is a main hydraulic rod, and 38 is a fifth spring.
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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
The utility model provides a bridge damping structure, which comprises a top plate 1, wherein the bottom end of the top plate 1 is fixedly connected with at least four first damping parts; the bottom end of the first damping part is fixedly connected with a first supporting block 3; a box body 10 is arranged below the first supporting block 3, and the top end of the box body 10 is opened; be provided with second supporting shoe 6 in the box 10, 6 bottom fixedly connected with third supporting shoe 11 of second supporting shoe, first recess has all been seted up to second supporting shoe 6 and box 10 bottom, is provided with second shock attenuation portion in the first recess, and 3 bottoms of first supporting shoe articulate there is connecting rod 5, and the end of connecting rod 5 is articulated with the second shock attenuation portion that is located 6 tops of second supporting shoe, and third supporting shoe 11 is connected with box 10 through the second shock attenuation portion of box 10 bottom.
Furthermore, the number of the first grooves at the top end of the second supporting block 6 and the number of the first grooves at the bottom end of the box body 10 are four, and the four first grooves are distributed in a square shape.
Further, the first damping part comprises a barrel body 34 fixedly connected with the first supporting block 3, a sliding cap 31 is slidably sleeved on the outer wall of the top of the barrel body 34, and the sliding cap 31 is fixedly connected with the top plate 1; a main hydraulic rod 37 is fixedly connected to the inner wall of the bottom end of the barrel body 34, and the tail end of the main hydraulic rod 37 is fixedly connected with the sliding cap 31; the main hydraulic rod 37 is sleeved with a fifth spring 38, and two ends of the fifth spring 38 are respectively fixedly connected with the barrel body 34 and the sliding cap 31; auxiliary hydraulic rods 35 are arranged on two sides of the main hydraulic rod 37, the bottom ends of the auxiliary hydraulic rods 35 are fixedly connected with the barrel body 34, and protrusions are fixedly arranged at the top ends of the auxiliary hydraulic rods 35; a sixth spring 36 is sleeved on the auxiliary hydraulic rod 35, and two ends of the sixth spring 36 are respectively fixedly connected with the barrel body 34 and the bulge; the inner wall of the top end of the sliding cap 31 is fixedly connected with a third damping rod 32, and the third damping rod 32 and the auxiliary hydraulic rod 35 are arranged correspondingly. First shock attenuation portion is multistage shock attenuation, has not only improved the shock attenuation effect of first shock attenuation portion greatly, has still improved reliability, the security of first shock attenuation portion greatly.
Further, the inner wall of the bottom of the sliding cap 31 is rotatably connected with a sliding ball 33, and the sliding cap 31 is slidably connected with the barrel 34 through the sliding ball 33. The sliding ball 33 can reduce the abrasion between the barrel 34 and the sliding cap 31, and improve the service life of the parts in the first shock absorption part.
Further, the second damping portion comprises a first sliding block 20, a first sliding rod 22 is fixedly connected in the first groove, and the first sliding block 20 is slidably sleeved on the first sliding rod 22; the two sides of the first sliding block 20 are both provided with a second spring 21, the second spring 21 is sleeved on the first sliding rod 22, and two ends of the second spring 21 are respectively fixedly connected with the inner wall of the first groove and the side wall of the first sliding block 20; the top end of a first sliding block 20 positioned at the top end of a second supporting block 6 is hinged with a connecting rod 5, and the tail end of the connecting rod 5 is hinged with a first supporting block 3; the top end of the first slider 20 located at the bottom end of the box body 10 is fixedly connected with a first supporting rod 19, and the tail end of the first supporting rod 19 is fixedly connected with the third supporting block 11.
Further, a third damping part is arranged between the box body 10 and the third supporting block 11, and the third damping part comprises a tip 23 fixedly connected with the box body 10; second fixing blocks 24 are symmetrically arranged on two sides of the center 23, and the second fixing blocks 24 are fixedly connected with the third supporting block 11; one side of the second fixed block 24 close to the tip 23 is provided with a sliding block 25, the sliding block 25 is connected with the third supporting block 11 in a sliding manner, and two adjacent sliding blocks 25 are in clearance fit; a second damping rod 26 is fixedly connected to the sliding block 25, and the tail end of the second damping rod 26 penetrates through the second fixing block 24 and is fixedly connected with a limiting block; the second shock absorption rod 26 is sleeved with a fourth spring 27, and two ends of the fourth spring 27 are respectively and fixedly connected with the second fixed block 24 and the sliding block 25.
Further, not less than two second damper rods 26 are provided.
Further, a fourth damping part is arranged on one side, away from the center 23, of the second fixing block 24, and the fourth damping part comprises a U-shaped groove 7 fixedly connected with the side wall of the third supporting block 11; the inner wall of the box body 10 is fixedly connected with a first damping rod 8, and the tail end of the first damping rod 8 is inserted in the U-shaped groove 7; a first spring 9 is arranged in the U-shaped groove 7, and two ends of the first spring 9 are fixedly connected with the inner wall of the U-shaped groove 7 and the first shock absorption rod 8 respectively.
Further, the bottom end of the top plate 1 is fixedly connected with a first fixed block 2, and a first permanent magnet 4 is fixedly embedded in the bottom end of the first fixed block 2; the top end of the first supporting block 3 is provided with a second groove, and the bottom end of the second groove is fixedly connected with a second permanent magnet 17; the first fixing block 2 is arranged corresponding to the second groove. When first shock attenuation portion became invalid, can also play the absorbing effect of buffering under the effect of first permanent magnet 4 and the 17 effect of repelling magnetic force of second permanent magnet, can not cause major accident because of the sudden failure of first shock attenuation portion, improved greatly the utility model discloses a bridge shock-absorbing structure's reliability, security.
Furthermore, the two sides of the second supporting block 6 are fixedly provided with a first damping block 15, the inner wall of the box body 10 is fixedly connected with a second damping block 14, and the second damping block 14 corresponds to the first damping block 15. When the horizontal movement range is large, the first and second damper blocks 15 and 14 can not only buffer the collision between the third support block 11 and the case 10, but also reduce noise.
Furthermore, in order to facilitate the installation of the top plate 1, a plurality of bolt holes 16 are formed, and the bolt holes 16 are distributed in a square shape at equal intervals.
The specific implementation mode is as follows: when the bridge is impacted in the vertical direction, the sliding cap 31 in the first damping part compresses the main hydraulic rod 37 and the fifth spring 38 under the action of pressure, the main hydraulic rod 37 and the fifth spring 38 absorb the impact, when the received impact is large, the compression amount of the main hydraulic rod 37 is large, the third damping rod 32 is in contact with the auxiliary hydraulic rod 35 and compresses the auxiliary hydraulic rod 35 and the sixth spring 36, at the moment, the column hydraulic rod 37, the auxiliary hydraulic rod 35, the fifth spring 38 and the sixth spring 36 absorb the impact simultaneously, the first damping part is internally provided with two stages of damping, the reliability of the first damping part can be greatly improved, and further the reliability of the whole structure is improved.
A second damping part is arranged between the first supporting block 3 and the second supporting block 6, the second damping part can absorb the impact in the vertical direction at the same time, and when the first damping part is vertically impacted, the first sliding block 20 positioned at the top end of the second supporting block 6 slides towards the direction close to the first damping block 15, so that the second spring 21 is driven to move, and the impact in the vertical direction is absorbed; when the impact in the horizontal direction is received, the first sliding block 20 slides in the horizontal direction, and then the second spring 21 is driven to move, so that the impact in the horizontal direction is absorbed, and the second buffer part mainly serves as auxiliary buffer.
When the horizontal impact is received, because the third supporting block 11 is connected with the box body 10 in a sliding manner, under the action of the horizontal force, the third supporting block 11 moves in the horizontal direction, the first sliding block 20 positioned at the bottom end of the box body 10 is driven to slide in the horizontal direction, and the second spring 21 is driven to move to absorb the impact in the horizontal direction; meanwhile, the U-shaped groove 9 moves in the horizontal direction under the driving of the third supporting block 11, and drives the first spring 9 to move to absorb the impact in the horizontal direction; the sliding block 25 slides to one side close to the second fixed block 24 under the action of the tip 23, the sliding block 25 drives the second damping rod 26 fixedly connected with the sliding block to move together, and then the fourth spring 27 is compressed to absorb the impact in the horizontal direction; and a multistage buffering and damping part is also arranged for responding to the horizontal impact, so that the reliability of absorbing the horizontal impact is improved.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.
Claims (8)
1. The utility model provides a bridge shock-absorbing structure which characterized in that: the damping device comprises a top plate (1), wherein at least four first damping parts are fixedly connected to the bottom end of the top plate (1); the bottom end of the first damping part is fixedly connected with a first supporting block (3); a box body (10) is arranged below the first supporting block (3), and the top end of the box body (10) is opened; the improved box is characterized in that a second supporting block (6) is arranged in the box body (10), a third supporting block (11) is fixedly connected to the bottom end of the second supporting block (6), first grooves are formed in the bottom ends of the second supporting block (6) and the box body (10), a second damping portion is arranged in each first groove, a connecting rod (5) is hinged to the bottom end of each first supporting block (3), the tail end of each connecting rod (5) is hinged to the second damping portion located at the top end of each second supporting block (6), and the third supporting block (11) is connected with the box body (10) through the second damping portion at the bottom end of the box body (10).
2. The bridge shock absorbing structure according to claim 1, wherein: the first damping part comprises a barrel body (34) fixedly connected with the first supporting block (3), a sliding cap (31) is slidably sleeved on the outer wall of the top of the barrel body (34), and the sliding cap (31) is fixedly connected with the top plate (1); a main hydraulic rod (37) is fixedly connected to the inner wall of the bottom end of the barrel body (34), and the tail end of the main hydraulic rod (37) is fixedly connected with the sliding cap (31); a fifth spring (38) is sleeved on the main hydraulic rod (37), and two ends of the fifth spring (38) are respectively fixedly connected with the barrel body (34) and the sliding cap (31); auxiliary hydraulic rods (35) are arranged on two sides of the main hydraulic rod (37), the bottom ends of the auxiliary hydraulic rods (35) are fixedly connected with the barrel body (34), and protrusions are fixedly arranged at the top ends of the auxiliary hydraulic rods (35); a sixth spring (36) is sleeved on the auxiliary hydraulic rod (35), and two ends of the sixth spring (36) are respectively and fixedly connected with the barrel body (34) and the protrusions; the inner wall of the top end of the sliding cap (31) is fixedly connected with a third damping rod (32), and the third damping rod (32) and the auxiliary hydraulic rod (35) are arranged correspondingly.
3. The bridge shock absorbing structure according to claim 2, wherein: the inner wall of the bottom of the sliding cap (31) is rotatably connected with a sliding ball (33), and the sliding cap (31) is connected with the barrel body (34) in a sliding mode through the sliding ball (33).
4. The bridge shock absorbing structure according to claim 1, wherein: the second damping part comprises a first sliding block (20), a first sliding rod (22) is fixedly connected in the first groove, and the first sliding block (20) is sleeved on the first sliding rod (22) in a sliding manner; second springs (21) are arranged on two sides of the first sliding block (20), the second springs (21) are sleeved on the first sliding rod (22), and two ends of each second spring (21) are fixedly connected with the inner wall of the corresponding first groove and the side wall of the first sliding block (20) respectively; the top end of the first sliding block (20) positioned at the top end of the second supporting block (6) is hinged with a connecting rod (5), and the tail end of the connecting rod (5) is hinged with the first supporting block (3); the top end of the first sliding block (20) positioned at the bottom end of the box body (10) is fixedly connected with a first supporting rod (19), and the tail end of the first supporting rod (19) is fixedly connected with the third supporting block (11).
5. The bridge shock absorbing structure according to claim 1, wherein: a third damping part is arranged between the box body (10) and the third supporting block (11), and the third damping part comprises a tip (23) fixedly connected with the box body (10); second fixed blocks (24) are symmetrically arranged on two sides of the center (23), and the second fixed blocks (24) are fixedly connected with the third supporting block (11); one side, close to the tip (23), of the second fixed block (24) is provided with a sliding block (25), the sliding block (25) is in sliding connection with the third supporting block (11), and the two adjacent sliding blocks (25) are in clearance fit; a second damping rod (26) is fixedly connected to the sliding block (25), and the tail end of the second damping rod (26) penetrates through the second fixed block (24) and is fixedly connected with a limiting block; the second shock absorption rod (26) is sleeved with a fourth spring (27), and two ends of the fourth spring (27) are fixedly connected with the second fixed block (24) and the sliding block (25) respectively.
6. The bridge shock absorbing structure according to claim 5, wherein: a fourth damping part is arranged on one side, far away from the center (23), of the second fixing block (24), and the fourth damping part comprises a U-shaped groove (7) fixedly connected with the side wall of the third supporting block (11); a first damping rod (8) is fixedly connected to the inner wall of the box body (10), and the tail end of the first damping rod (8) is inserted into the U-shaped groove (7); a first spring (9) is arranged in the U-shaped groove (7), and two ends of the first spring (9) are fixedly connected with the inner wall of the U-shaped groove (7) and the first shock absorption rod (8) respectively.
7. The bridge shock absorbing structure according to claim 1, wherein: the bottom end of the top plate (1) is fixedly connected with a first fixed block (2), and a first permanent magnet (4) is fixedly embedded in the bottom end of the first fixed block (2); a second groove is formed in the top end of the first supporting block (3), and a second permanent magnet (17) is fixedly connected to the bottom end of the second groove; the first fixing block (2) is arranged corresponding to the second groove.
8. The bridge shock absorbing structure according to claim 1, wherein: and first damping blocks (15) are fixedly arranged on two sides of the second supporting block (6), a second damping block (14) is fixedly connected to the inner wall of the box body (10), and the second damping block (14) corresponds to the first damping block (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120576385.1U CN214573285U (en) | 2021-03-22 | 2021-03-22 | Bridge shock-absorbing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120576385.1U CN214573285U (en) | 2021-03-22 | 2021-03-22 | Bridge shock-absorbing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214573285U true CN214573285U (en) | 2021-11-02 |
Family
ID=78354938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120576385.1U Expired - Fee Related CN214573285U (en) | 2021-03-22 | 2021-03-22 | Bridge shock-absorbing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214573285U (en) |
-
2021
- 2021-03-22 CN CN202120576385.1U patent/CN214573285U/en not_active Expired - Fee Related
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Granted publication date: 20211102 |