Bridge anti-seismic buffering and damping device

Abstract

The utility model discloses a bridge anti-seismic buffering and damping device, which relates to the technical field of bridge anti-seismic, and comprises a bridge, a plurality of buffering mechanisms are arranged at the bottom of the bridge, a plurality of bridge piers are arranged below the bridge, the number of the bridge piers is equal to that of the buffering mechanisms, and the number of the bridge piers is equal to that of the buffering mechanisms. And the buffer mechanism extends into the pier. According to the anti-seismic buffering and damping device for the bridge, through downward movement of a round rod, an upper spring can be extruded, downward movement of a moving plate and extrusion of the upper spring, primary damping work is completed, downward movement of the moving plate can enable a gear to rotate, so that a groove hole in one end of a threaded rod is separated, subsequent operation is facilitated, and when a lifting plate moves downwards, the lifting plate moves downwards; and the lifting plate moves downwards along the pier to extrude the lower spring below the lifting plate, so that secondary buffering and damping work can be carried out, and the upper spring above the lifting plate is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge earthquake resistance, in particular to a bridge earthquake resistance buffering and shock absorbing device. Background Art

[0002] With the rapid development of economic construction, civil engineering projects such as railway engineering, highway engineering and municipal engineering have developed rapidly, and these projects are inseparable from the construction of bridges. In the existing technology, when the spring is squeezed, if the pressure on the spring is greater than the yield strength of the spring, the spring cannot perform the shock absorption work, and the life of the spring will be reduced. The spring cannot be protected and the secondary shock absorption work cannot be completed.

[0003] For example, patent application number CN202123168012.X discloses a bridge seismic buffer device, which relates to the field of bridge seismic technology. In the bridge seismic buffer device, when the bridge is affected by vibration, the force generated by the vibration and perpendicular to the pier is absorbed and consumed by the first spring and the second spring, reducing the vibration of the bridge in the horizontal direction, ensuring the buffering effect between the pier and the bridge plate, improving the seismic performance and safety of the bridge, and extending the overall service life of the bridge. During use, if the pressure on the spring is greater than the yield strength of the spring, the spring cannot perform shock absorption work, and the life of the spring will be reduced, the spring cannot be protected, and the secondary shock absorption work cannot be completed.

[0004] For example, patent application number CN201822139476.X, the utility model discloses a bridge seismic device, the compression spring in the utility model can offset the lateral micro-vibration, avoid the lateral displacement of the bridge due to earthquake, improve the stability of the bridge seismic support, make the bridge pier body evenly stressed, and extend the service life of the bridge seismic support; when the movable plate is subjected to force, the top seat presses down to make the telescopic column retract, driving the two connecting rods to push the two sliders to move apart, so that the slider compresses the spring on the guide shaft to convert the vertical kinetic energy of the telescopic column into potential energy, thereby achieving the seismic effect, thereby comprehensively and effectively ensuring the stability of the bridge plate. During use, if the pressure on the spring is greater than the yield strength of the spring, the spring will not be able to perform shock absorption work, and the life of the spring will be reduced, the spring cannot be protected, and the secondary shock absorption work cannot be completed. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a bridge anti-seismic buffering and shock absorbing device, which solves the problem that if the pressure applied to the spring is greater than the yield strength of the spring, the spring cannot perform the shock absorbing work, the service life of the spring is reduced, the spring cannot be protected, and the secondary shock absorbing work cannot be completed.

[0006] To achieve the above object, the utility model is realized through the following technical solutions: A bridge seismic buffering and shock-absorbing device, including a bridge, a buffering mechanism is arranged at the bottom of the bridge, a bridge pier is arranged below the bridge, the number of the bridge piers and the buffering mechanism is multiple and equal, and the buffering mechanism extends into the interior of the bridge pier.

[0007] The buffering mechanism includes a fixing plate, the fixing plate is fixedly connected with the bridge, a vertical rod is arranged at the bottom of the fixing plate, an upper spring is arranged at the bottom end of the vertical rod, a lifting plate is arranged at the bottom of the upper spring, a lower spring is arranged at the bottom of the lifting plate, a supporting plate is arranged at the top of the lifting plate, the number of the supporting plates is two, a gear is arranged between the two supporting plates, sleeves are fixedly arranged on both sides of the gear, the sleeves penetrate through the supporting plates and are movably connected with the supporting plates, and a pushing rod is arranged at the bottom of the vertical rod.

[0008] Preferably, the lifting plate is in contact with the inner wall of the bridge pier, the cross-sectional shape of the pushing rod is L-shaped, so that the lifting plate moves downward along the bridge pier, and the lower spring below the lifting plate is squeezed.

[0009] Preferably, a moving plate is fixedly arranged at the bottom end of the vertical rod, and a toothed rail is arranged on one side of the moving plate close to the gear.

[0010] Preferably, the toothed rail is meshed with the gear, the pushing rod is fixedly connected with the moving plate, holes are arranged on the surface of the lifting plate, by moving downward through the toothed rail, the toothed rail can be meshed with the gear, so that the gear rotates, and the downward movement of the moving plate is ensured through the holes on the surface of the lifting plate, and the moving plate penetrates through the holes.

[0011] Preferably, a threaded rod is arranged at one end of the sleeve away from the gear, a sliding rod is arranged at the top of the lifting plate, and the threaded rod penetrates through the sliding rod and is fixedly connected with the sliding rod.

[0012] Preferably, the number of the threaded rods is two, the threads on the surfaces of the two threaded rods are arranged in opposite directions, the threaded rods are in threaded connection with the sleeves, the threads on the surfaces of the two threaded rods are arranged in opposite directions, the distance between the two threaded rods can be reduced, the threaded rods gradually move, and the movement of the threaded rods can drive the sliding rod to move.

[0013] Preferably, a baffle is arranged at the top of the lifting plate, the baffle is fixedly connected with the inner wall of the bridge pier, and the baffle is in contact with the lifting plate. The baffle can be separated from the lifting plate, and when the two are in contact, the lifting plate is prevented from moving upward continuously.

[0014] Preferably, groove holes are arranged on both inner walls of the bridge pier, and one end of the threaded rod extends into the groove holes.

[0015] Beneficial effects

[0016] The utility model provides a bridge seismic buffer and shock absorption device. Compared with the prior art, it has the following beneficial effects:

[0017] 1. For this bridge seismic buffer and shock absorption device, through the downward movement of the round rod, the upper spring can be squeezed, and when the moving plate moves downward, the primary shock absorption work is completed by squeezing the upper spring. The downward movement of the moving plate can make the gear rotate, separating the slot holes at one end of the threaded rod, facilitating subsequent operations. When the lifting plate moves downward and no longer squeezes the upper spring, it protects the upper spring. Moreover, as the lifting plate moves downward along the bridge pier, it squeezes the lower spring below the lifting plate, thereby enabling secondary buffer and shock absorption work and protecting the upper spring above.

[0018] 2. For this bridge seismic buffer and shock absorption device, since the moving plate is fixedly connected to the push rod, the push rod moves downward together with the moving plate. The downward movement of the moving plate is ensured through the holes on the surface of the lifting plate, and when the push rod contacts the lifting plate, it pushes the lifting plate downward. Brief description of the drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the buffer mechanism of the utility model;

[0021] Figure 3 It is a cross-sectional view of the bridge pier and the threaded rod of the utility model;

[0022] Figure 4 It is a bottom view of the buffer mechanism of the utility model.

[0023] In the figure: 1. Bridge; 2. Buffer mechanism; 201. Fixed plate; 202. Vertical rod; 203. Upper spring; 204. Lifting plate; 205. Lower spring; 206. Support plate; 207. Gear; 208. Sleeve; 209. Push rod; 210. Moving plate; 211. Hole; 212. Threaded rod; 213. Sliding rod; 214. Baffle; 215. Slot hole; 3. Bridge pier. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the utility model.

[0025] Please refer toFigure 1-2 As shown in FIGS. 1 and 4, the present utility model provides a technical solution: a bridge seismic buffer and shock absorption device, including a bridge 1, a buffer mechanism 2 is provided at the bottom of the bridge 1, and a bridge pier 3 is provided below the bridge 1. The number of the bridge piers 3 and the buffer mechanism 2 is multiple and equal, and the buffer mechanism 2 extends into the interior of the bridge pier 3.

[0026] The buffer mechanism 2 includes a fixing plate 201, the fixing plate 201 is fixedly connected to the bridge 1, a vertical rod 202 is provided at the bottom of the fixing plate 201, an upper spring 203 is provided at the bottom end of the vertical rod 202, a lifting plate 204 is provided at the bottom of the upper spring 203, a lower spring 205 is provided at the bottom of the lifting plate 204, a supporting plate 206 is provided at the top of the lifting plate 204. The number of the supporting plates 206 is two. A gear 207 is provided between the two supporting plates 206. Sleeve tubes 208 are fixedly provided on both sides of the gear 207. The sleeve tubes 208 penetrate through the supporting plate 206 and are movably connected to the supporting plate 206. A push rod 209 is provided at the bottom of the vertical rod 202.

[0027] The lifting plate 204 is in contact with the inner wall of the bridge pier 3, and the cross-sectional shape of the push rod 209 is L-shaped.

[0028] A moving plate 210 is fixedly provided at the bottom end of the vertical rod 202. A tooth rail is provided on one side of the moving plate 210 close to the gear 207. The tooth rail meshes with the gear 207. The push rod 209 is fixedly connected to the moving plate 210. A hole 211 is provided on the surface of the lifting plate 204.

[0029] A baffle 214 is provided at the top of the lifting plate 204. The baffle 214 is fixedly connected to the inner wall of the bridge pier 3. The baffle 214 is in contact with the lifting plate 204. Grooves 215 are provided on both inner walls of the bridge pier 3. One end of a threaded rod 212 extends into the groove 215.

[0030] Please refer to Figure 1 and 3 , a threaded rod 212 is provided at one end of the sleeve tube 208 away from the gear 207. A sliding rod 213 is provided at the top of the lifting plate 204. The threaded rod 212 penetrates through the sliding rod 213 and is fixedly connected to the sliding rod 213. The number of the threaded rods 212 is two. The threads on the surfaces of the two threaded rods 212 are arranged in opposite directions. The threaded rod 212 is threadedly connected to the sleeve tube 208.

[0031] During operation, when the bridge 1 receives pressure, it causes the bridge 1 to move downward, and pushes the fixed plate 201 and the vertical rod 202 below downward, squeezing the upper spring 203 below the vertical rod 202, deforming the upper spring 203. When the moving plate 210 moves downward, the push rod 209 fixedly connected to the moving plate 210 moves downward simultaneously, improving the work efficiency. When the moving plate 210 moves downward, the toothed rail at the moving plate 210 moves downward simultaneously, and allows the moving plate 210 to continue moving downward through the hole 211, ensuring the downward movement of the moving plate 210. When the toothed rail moves downward, it can engage the toothed rail with the gear 207, causing the gear 207 to rotate, and the sleeve 208 fixedly connected to the gear 207 rotates simultaneously. Since the sleeve 208 is movably connected to the support plate 206, the rotation of the sleeve 208 can be ensured. During the rotation of the sleeve 208, since the sleeve 208 is threadedly connected to the threaded rod 212, and the threads on the surfaces of the two threaded rods 212 are arranged in opposite directions, the distance between the two threaded rods 212 can be reduced, causing the threaded rod 212 to gradually move, and the movement of the threaded rod 212 can drive the sliding rod 213 to move. Since the bottom end of the sliding rod 213 is movably connected to the top surface of the lifting plate 204, the sliding rod 213 moves along the lifting plate 204, and one end of the threaded rod 212 gradually separates from the slot 215. When separating, because the push rod 209 has already moved downward, the push rod 209 comes into contact with the lifting plate 204. When the vertical rod 202 continues to move downward, the lifting plate 204 moves downward simultaneously. Since the lifting plate 204 is in contact with the bridge pier 3, the lifting plate 204 moves downward along the bridge pier 3, squeezing the lower spring 205 below the lifting plate 204, thereby enabling secondary buffer and shock absorption work, and protecting the upper spring 203 above.

[0032] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

Claims

1. A bridge anti-seismic buffering and shock absorbing device, comprising a bridge (1), characterized in that: A buffer mechanism (2) is provided at the bottom of the bridge (1), and a pier (3) is provided below the bridge (1). The number of the piers (3) and the buffer mechanism (2) is multiple and equal, and the buffer mechanism (2) extends to the inside of the pier (3); The buffer mechanism (2) comprises a fixed plate (201), wherein the fixed plate (201) is fixedly connected to the bridge (1), a vertical rod (202) is arranged at the bottom of the fixed plate (201), an upper spring (203) is arranged at the bottom of the vertical rod (202), a lifting plate (204) is arranged at the bottom of the upper spring (203), a lower spring (205) is arranged at the bottom of the lifting plate (204), a supporting plate (206) is arranged at the top of the lifting plate (204), the number of the supporting plates (206) is two, a gear (207) is arranged between the two supporting plates (206), sleeves (208) are fixedly arranged on both sides of the gear (207), the sleeves (208) penetrate the supporting plate (206) and are movably connected to the supporting plate (206), and a pushing rod (209) is arranged at the bottom of the vertical rod (202).

2. A bridge anti-seismic buffering and shock absorbing device according to claim 1, characterized in that: The lifting plate (204) is in contact with the inner wall of the pier (3), and the cross-sectional shape of the pushing rod (209) is L-shaped.

3. The bridge anti-seismic buffer and shock absorbing device according to claim 1 is characterized in that: A moving plate (210) is fixedly arranged at the bottom end of the vertical rod (202), and a gear track is arranged on a side of the moving plate (210) close to the gear (207).

4. The bridge anti-seismic buffering and shock absorbing device according to claim 3 is characterized in that: The rack is meshed with the gear (207), the push rod (209) is fixedly connected to the moving plate (210), and the surface of the lifting plate (204) is provided with a hole (211).

5. The bridge anti-seismic buffering and shock absorbing device according to claim 1 is characterized in that: A threaded rod (212) is disposed at one end of the sleeve (208) away from the gear (207), a sliding rod (213) is disposed at the top of the lifting plate (204), and the threaded rod (212) passes through the sliding rod (213) and is fixedly connected to the sliding rod (213).

6. The bridge anti-seismic buffering and shock absorbing device according to claim 5 is characterized in that: There are two threaded rods (212), the threads on the surfaces of the two threaded rods (212) are arranged opposite to each other, and the threaded rods (212) are threadedly connected to the sleeve (208).

7. The bridge anti-seismic buffering and shock absorbing device according to claim 1 is characterized in that: A baffle (214) is provided on the top of the lifting plate (204); the baffle (214) is fixedly connected to the inner wall of the pier (3); and the baffle (214) is in contact with the lifting plate (204).

8. The bridge anti-seismic buffering and shock absorbing device according to claim 5 is characterized in that: The inner walls on both sides of the pier (3) are provided with slots (215), and one end of the threaded rod (212) extends into the interior of the slot (215).

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