CN214301222U

CN214301222U - Anti-seismic device for highway bridge

Info

Publication number: CN214301222U
Application number: CN202022661644.9U
Authority: CN
Inventors: 康恩铨; 姚锡伟; 熊灵; 付洋; 刘高
Original assignee: Neijiang Vocational and Technical College
Current assignee: Neijiang Vocational and Technical College
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-09-28
Anticipated expiration: 2030-11-17

Abstract

The utility model discloses an anti-seismic device for a highway bridge, which relates to the field of highway bridges and comprises a bridge span, a limiting mechanism and a damping mechanism, wherein the bottom end of the bridge span is provided with a connecting block; the limiting mechanism comprises a fixing plate located at the bottom end of the connecting block, a damping support is arranged at the bottom end of the fixing plate, a pier is arranged at the bottom end of the damping support, a limiting shaft is arranged at the top end of the pier, and a damping spring is arranged between the pier and the fixing plate and located on the outer wall of the limiting shaft. The utility model discloses a when setting up connecting seat, last go up the go-between, go up even axle, buffer spring, adapter sleeve messenger vibrations and produce horizontal force and make the displacement around taking place around the bridge span, the horizontal force of bridge span is passed through last connecting seat, is gone up the go-between and is gone up even axle transmission and give last spacing piece, then absorbs the horizontal direction atress of bridge span through extrusion buffer spring to reach the effect of protection bridge.

Description

Anti-seismic device for highway bridge

Technical Field

The utility model relates to a public road bridge roof beam field specifically is a public road bridge roof beam is with antidetonation device.

Background

Highway bridge construction includes main bridge (i.e. upper bridge structure and lower bridge structure) construction and auxiliary engineering facilities in the bridge location population. The auxiliary engineering facilities are various, such as structures for regulating and controlling water flow, such as revetments and diversion dikes for keeping stable riverways at bridge positions, approach bridges with bridge heads connected with highways, railings for preventing wheels from colliding on bridge floors, sidewalk railings for ensuring pedestrian safety, on-bridge signs, under-bridge navigation signs, bridge floor lighting equipment and the like.

The anti-seismic device for the highway bridge in the prior art does not buffer the horizontal force of the bridge span caused by vibration, so that the bridge span is shortened or lengthened, and the anti-seismic device is very unsafe; in addition, the anti-seismic device for the highway bridge in the prior art does not have a limiting device when the damping support is replaced, and horizontal displacement is easy to occur in the jacking process.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the anti-seismic device for the highway bridge in the prior art is unsafe because the bridge span is shortened or lengthened due to the fact that the horizontal force generated by vibration of the bridge span is not buffered; in addition, the anti-seismic device for the highway bridge in the prior art does not have a limiting device when a damping support is replaced, and is easy to generate horizontal displacement in the jacking process, and the anti-seismic device for the highway bridge is provided.

In order to achieve the above object, the utility model provides a following technical scheme: an anti-seismic device for a highway bridge comprises a bridge span, a limiting mechanism and a damping mechanism, wherein a connecting block is arranged at the bottom end of the bridge span;

the limiting mechanism comprises a fixing plate positioned at the bottom end of the connecting block, a damping support is arranged at the bottom end of the fixing plate, a pier is arranged at the bottom end of the damping support, a limiting shaft is arranged at the top end of the pier, and a damping spring is arranged between the pier and the fixing plate on the outer wall of the limiting shaft;

wherein, damper is including two lower connecting seats that are located the pier top, two the inside of connecting seat is provided with the rotation groove down, the inside in rotation groove is provided with down the go-between, the outer wall of go-between is provided with down links the axle down, the other end of linking the axle is provided with down spacing piece down, the other end of spacing piece is provided with buffer spring down, buffer spring's the other end is provided with spacing piece, the other end of going up spacing piece is provided with even axle, the other end of going up even axle is provided with the go-between, the outer wall of going up the go-between is provided with the connecting seat, the outer wall of going up the connecting seat is provided with the shaft hole, the inside fixed axle that is provided with in shaft hole, the outer wall of going up spacing piece and spacing piece down is provided with the adapter sleeve.

Preferably, one side of the upper connecting seat is fixedly connected with one side of the bridge span, and the bottom end of the lower connecting seat is fixedly connected with the top end of the pier.

Preferably, the outer wall of the fixed shaft is in fit connection with the shaft hole and the inner walls of the upper connecting ring and the lower connecting ring, and the outer walls of the lower connecting ring and the upper connecting ring are in fit connection with the rotating groove.

Preferably, the outer walls of the upper limiting block and the lower limiting block are in fit connection with the inner wall of the connecting sleeve, and two ends of the buffer spring are fixedly connected with the upper limiting block and the lower limiting block.

Preferably, the fixed plate is fixedly connected with the connecting block, and the limiting shaft is fixedly connected with the bridge pier.

Preferably, sliding grooves matched with the outer wall of the limiting shaft are formed in the four corners of the fixing plate.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a when setting up connecting seat, last go up the go-between, go up even axle, buffer spring, adapter sleeve messenger vibrations and produce horizontal force and make the displacement around taking place around the bridge span, the horizontal force of bridge span is passed through last connecting seat, is gone up the go-between and is gone up even axle transmission and give last spacing piece, then absorbs the horizontal direction atress of bridge span through extrusion buffer spring to reach the effect of protection bridge.

2. The utility model discloses a jack is changed fixed plate and connecting block jacking take the altitude with shock-absorbing support, and among the jacking process, spacing axle slides in the inside spout of fixed plate to avoided making the bridge span take place horizontal displacement because of the jacking, when the bridge span received axial vibrations, partly can be absorbed by shock-absorbing support, and damping spring absorbs is pressed through the fixed plate to some other, thereby reaches better cushioning effect.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a sectional exploded view of the damping mechanism of the present invention;

FIG. 3 is an enlarged view of the point A of the present invention;

fig. 4 is a structural diagram of the limiting mechanism of the present invention.

In the figure: 1. a bridge span; 2. connecting blocks; 3. a lower connecting seat; 4. a fixed shaft; 5. a lower connecting shaft; 6. a bridge pier; 7. connecting sleeves; 8. an upper connecting shaft; 9. an upper connecting seat; 10. an upper connecting ring; 11. a shaft hole; 12. a rotating groove; 13. a lower connecting ring; 14. an upper limit block; 15. a buffer spring; 16. a lower limiting block; 17. a limiting shaft; 18. a damping spring; 19. a shock-absorbing support; 20. and (7) fixing the plate.

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.

Referring to fig. 1-4, an anti-seismic device for a highway bridge comprises a bridge span 1, a limiting mechanism and a damping mechanism, wherein a connecting block 2 is arranged at the bottom end of the bridge span 1;

the limiting mechanism comprises a fixing plate 20 positioned at the bottom end of the connecting block 2, a damping support 19 is arranged at the bottom end of the fixing plate 20, a pier 6 is arranged at the bottom end of the damping support 19, a limiting shaft 17 is arranged at the top end of the pier 6, and a damping spring 18 is arranged between the pier 6 and the fixing plate 20 on the outer wall of the limiting shaft 17;

wherein, damper is including two lower connecting seats 3 that are located 6 tops of pier, the inside of two lower connecting seats 3 is provided with rotates groove 12, the inside of rotating groove 12 is provided with down go-between 13, the outer wall of lower go-between 13 is provided with down even axle 5, the other end of even axle 5 is provided with down spacing piece 16 down, the other end of spacing piece 16 is provided with buffer spring 15 down, buffer spring 15's the other end is provided with spacing piece 14, the other end of going up spacing piece 14 is provided with even axle 8, the other end of going up even axle 8 is provided with go-between 10, the outer wall of going up go-between 10 is provided with connecting seat 9, the outer wall of going up connecting seat 9 is provided with shaft hole 11, the inside fixed axle 4 that is provided with in shaft hole 11, the outer wall of going up spacing piece 14 and spacing piece 16 down is provided with adapter sleeve 7.

Please refer to fig. 1, one side of the upper connecting seat 9 is fixedly connected to one side of the bridge span 1, and the bottom end of the lower connecting seat 3 is fixedly connected to the top end of the pier 6, so as to fix the upper connecting seat 9 and the lower connecting seat 3.

Please refer to fig. 2, the outer wall of the fixed shaft 4 is engaged with the inner walls of the shaft hole 11, the upper connecting ring 10 and the lower connecting ring 13, the outer walls of the lower connecting ring 13 and the upper connecting ring 10 are engaged with the rotating groove 12, so that the upper connecting ring 10 and the upper connecting seat are rotatably connected by the fixed shaft 4, and the lower connecting ring 13 and the lower connecting seat 3 are rotatably connected by the fixed shaft 4.

Please refer to fig. 3, the outer walls of the upper limiting block 14 and the lower limiting block 16 are fit with the inner wall of the connecting sleeve 7, and the two ends of the buffer spring 15 are fixedly connected with the upper limiting block 14 and the lower limiting block 16, so that the upper limiting block 14 and the lower limiting block 16 can slide on the inner wall of the connecting sleeve 7.

Please refer to fig. 4, the fixing plate 20 is fixedly connected to the connecting block 2, and the limiting shaft 17 is fixedly connected to the bridge pier 6, so as to fixedly connect the fixing plate 20.

Please refer to fig. 4, sliding slots engaged with the outer wall of the limiting shaft 17 are disposed inside the four corners of the fixing plate 20, so that the limiting shaft 17 can pass through the fixing plate 20, and the fixing plate 20 can slide on the outer wall of the limiting shaft 17 through the sliding slots.

The working principle is as follows: firstly, before the device operates, an upper connecting ring 10 is placed in a rotating groove 12 of an upper connecting seat 9, a fixed shaft 4 is inserted into a shaft hole 11 and is inserted into the upper connecting ring 10, then a lower connecting ring 13 is placed in a rotating groove 12 of a lower connecting seat 3, the fixed shaft 4 is inserted into the shaft hole 11 of the lower connecting seat 3 and is inserted into the lower connecting ring 13 to complete connection, when horizontal force generated by vibration enables a bridge span 1 to move back and forth, the horizontal force of the bridge span 1 is transmitted to an upper limiting block 14 through the upper connecting seat 9, the upper connecting ring 10 and an upper connecting shaft 8, then the horizontal direction stress of the bridge span 1 is absorbed through an extrusion buffer spring 15, so as to achieve the effect of protecting the bridge, when the shock absorbing support 19 needs to be replaced, the shock absorbing support 19 is replaced by jacking a certain height of a fixed plate 20 and a connecting block 2 through a jack, during jacking, the limiting shaft 17 slides in a sliding groove in the fixed plate 20, therefore, horizontal displacement of the bridge span 1 caused by jacking is avoided, when the bridge span is subjected to axial vibration, one part of the bridge span can be absorbed by the damping support 19, and the other part of the bridge span is absorbed by pressing the damping spring 18 through the fixing plate 20, so that a better damping effect is achieved.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a highway is antidetonation device for bridge, includes bridge span (1), stop gear and damper, its characterized in that: the bottom end of the bridge span (1) is provided with a connecting block (2);

the limiting mechanism comprises a fixing plate (20) positioned at the bottom end of the connecting block (2), a damping support (19) is arranged at the bottom end of the fixing plate (20), a pier (6) is arranged at the bottom end of the damping support (19), a limiting shaft (17) is arranged at the top end of the pier (6), and a damping spring (18) is arranged between the pier (6) and the fixing plate (20) on the outer wall of the limiting shaft (17);

wherein, the damping mechanism comprises two lower connecting seats (3) positioned at the top end of a pier (6), the two lower connecting seats (3) are provided with a rotating groove (12), the inside of the rotating groove (12) is provided with a lower connecting ring (13), the outer wall of the lower connecting ring (13) is provided with a lower connecting shaft (5), the other end of the lower connecting shaft (5) is provided with a lower limiting block (16), the other end of the lower limiting block (16) is provided with a buffer spring (15), the other end of the buffer spring (15) is provided with an upper limiting block (14), the other end of the upper limiting block (14) is provided with an upper connecting shaft (8), the other end of the upper connecting shaft (8) is provided with an upper connecting ring (10), the outer wall of the upper connecting ring (10) is provided with an upper connecting seat (9), the outer wall of the upper connecting seat (9) is provided with a shaft hole (11), the fixing shaft (4) is arranged in the shaft hole (11), and the connecting sleeves (7) are arranged on the outer walls of the upper limiting block (14) and the lower limiting block (16).

2. An anti-seismic device for road bridges according to claim 1, wherein: one side of the upper connecting seat (9) is fixedly connected with one side of the bridge span (1), and the bottom end of the lower connecting seat (3) is fixedly connected with the top end of the pier (6).

3. An anti-seismic device for road bridges according to claim 1, wherein: the outer wall of the fixed shaft (4) is in fit connection with the inner walls of the shaft hole (11), the upper connecting ring (10) and the lower connecting ring (13), and the outer walls of the lower connecting ring (13) and the upper connecting ring (10) are in fit connection with the rotating groove (12).

4. An anti-seismic device for road bridges according to claim 1, wherein: the outer walls of the upper limiting block (14) and the lower limiting block (16) are in fit connection with the inner wall of the connecting sleeve (7), and two ends of the buffer spring (15) are fixedly connected with the upper limiting block (14) and the lower limiting block (16).

5. An anti-seismic device for road bridges according to claim 1, wherein: the fixing plate (20) is fixedly connected with the connecting block (2), and the limiting shaft (17) is fixedly connected with the pier (6).

6. An anti-seismic device for road bridges according to claim 1, wherein: and sliding chutes matched with the outer wall of the limiting shaft (17) are arranged in the four corners of the fixing plate (20).