Impact-resistant multi-direction displacement comb plate bridge expansion device

Abstract

The utility model relates to the technical field of bridge engineering, and discloses an anti-impact multidirectional displacement comb plate bridge expansion device which comprises two pieces of beam end concrete, the tops of the beam end concrete are fixedly connected with a static comb plate, the tops of the two pieces of beam end concrete are provided with a movable comb plate, an expansion joint is formed between the beam end concrete, and the movable comb plate is fixedly connected with the static comb plate. A connecting assembly is installed on the inner wall of the beam end concrete and used for connecting the two pieces of beam end concrete. According to the anti-impact multi-direction displacement comb plate bridge expansion device, the elastic material of the connecting support is arranged, when beam end concrete generates acting force on the connecting support, the acting force can be counteracted by the elastic characteristic of the beam end concrete, and therefore the effect of protecting the supporting seat is achieved, the supporting seat is connected with the beam end concrete through the sliding piece, and the service life of the supporting seat is prolonged. When the beam end concrete deforms, the supporting seat slides relative to the beam end concrete through the sliding piece, so that the supporting seat is protected, and the supporting seat between the beam end concrete is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge engineering, in particular to an impact-resistant multi-directional displacement comb tooth plate bridge expansion device. Background Technique

[0002] In bridge engineering, the bridge structure will deform due to temperature, load changes or concrete creep under normal use conditions. Therefore, it is necessary to set bridge expansion joints between the two ends of the bridge, between the beam end and the abutment, or at the hinge position of the bridge, and install bridge expansion devices on the bridge expansion joints to meet the needs of bridge deformation and ensure the driving safety, comfort and the safety of the bridge structure.

[0003] The existing expansion joints have the following deficiencies: (1) The beam end concrete directly bears the cyclic pulse vertical and impact loads of passing vehicles and produces cyclic elastic deformation in the vertical direction, which will directly transmit this changing pressure to the support seat, not only causing the support seat to be subjected to vertical pressure but also the left and right friction forces of the beam end concrete, which is extremely likely to cause the support seat to rupture; (2) Similarly, the moving comb tooth plate will also be subjected to vertical load pressure, causing it to deform. After multiple cycles, the moving comb tooth plate will produce downward deformation and is difficult to recover. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides an impact-resistant multi-directional displacement comb tooth plate bridge expansion device, which has the advantages of buffering the pressure of the beam end concrete and the moving comb tooth plate, and avoiding the problems of deformation and rupture of the support seat and the moving comb tooth plate.

[0005] In order to achieve the purpose of buffering the pressure of the beam end concrete and the moving comb tooth plate, the utility model provides the following technical solutions:

[0006] An impact-resistant multi-directional displacement comb tooth plate bridge expansion device, including two beam end concretes, a static comb tooth plate is fixedly connected to the top of the beam end concretes, a moving comb tooth plate is installed on the top of the two beam end concretes, an expansion joint is provided between the beam end concretes, a connecting component is installed on the inner wall of the beam end concretes, and the connecting component is used to connect the two beam end concretes. A support component is fixedly connected to the bottom of the moving comb tooth plate, and the support component is used to support the moving comb tooth plate. It also includes:

[0007] The connecting component includes a connecting support. A groove is formed in the inner wall of the beam-end concrete, and the connecting support is fixedly installed in the inner cavity of the groove. A support seat is fixedly connected to the side wall of the connecting support. Sliding pieces are fixedly connected to both the upper and lower ends of the support seat, and the sliding pieces are in contact with the inner wall of the beam-end concrete. A plurality of pins are inserted into the surface of the static comb tooth plate, the pins penetrate the beam-end concrete, and the pins penetrate the connecting support located in the inner cavity of the beam-end concrete. The connecting support is made of an elastic material, and the side wall of the connecting support is in contact with the inner wall of the beam-end concrete. By setting the connecting support with an elastic material, when the beam-end concrete exerts a force on the connecting support, the force will be offset by its own elastic characteristics, thereby playing a role in protecting the support seat. Moreover, the support seat and the beam-end concrete are connected by sliding pieces. Therefore, when the beam-end concrete deforms, the support seat slides relative to the beam-end concrete through the sliding pieces, thereby protecting the support seat.

[0008] According to some embodiments, the support component includes an elastic component. The elastic component is fixedly installed on the top of the support seat, and the top end of the elastic component is fixed to the bottom of the moving comb tooth plate. The elastic component includes a sleeve plate, the sleeve plate is fixedly installed on the top of the support seat, a connecting block is slidably connected to the inner wall of the sleeve plate, a rigid spring is fixedly connected between the connecting block and the sleeve plate, and the top end of the connecting block is fixed to the bottom of the moving comb tooth plate. The rigid spring is made of spring steel. The moving comb tooth plate will transmit the pressure to the elastic component, that is, the connecting block slides into the inner cavity of the sleeve plate. At this time, the rigid spring located between the connecting block and the sleeve plate will be compressed, thereby generating a rebound force. When the moving comb tooth plate is no longer under pressure, the rigid spring will assist the moving comb tooth plate to rebound to its original position, thereby playing a role in assisting to protect the moving comb tooth plate.

[0009] According to some embodiments, the static comb tooth plate includes a fixing plate, the fixing plate is fixedly installed on the top of the beam-end concrete, a first tooth groove is formed in the side wall of the fixing plate, the moving comb tooth plate includes a connecting plate, the connecting plate is fixedly installed on the top of the connecting block, and the connecting plate is in contact with the top of the beam-end concrete. Second tooth grooves are formed on both side walls of the connecting plate, and the first tooth groove and the second tooth groove are engaged with each other. The connecting plate is made of spring steel. When the static comb tooth plate and the moving comb tooth plate deform, that is, the connecting plate and the fixing plate will deform and extend to both sides. At this time, the second tooth groove and the first tooth groove on the side walls of the connecting plate and the fixing plate are engaged with each other, which can relieve the longitudinal pressure. Beneficial effects

[0010] The utility model provides an impact-resistant multi-directional displacement comb tooth plate bridge expansion device, which has the following beneficial effects:

[0011] 1. The impact-resistant multi-directional displacement comb-tooth plate bridge expansion device is provided with an elastic material for connecting the bearing. When the beam-end concrete exerts a force on the connecting bearing, it will be offset by its own elastic characteristics, thus playing a role in protecting the support seat. And the support seat and the beam-end concrete are connected by a sliding plate. Therefore, when the beam-end concrete deforms, the support seat slides relative to the beam-end concrete through the sliding plate, thereby protecting the support seat. All of the above play a role in protecting the support seat between the beam-end concretes.

[0012] 2. For the impact-resistant multi-directional displacement comb-tooth plate bridge expansion device, the moving comb-tooth plate will conduct the pressure to the elastic component, causing the connecting block to slide into the inner cavity of the sleeve plate. At this time, the rigid spring located between the connecting block and the sleeve plate will be compressed, thereby generating a rebounding force. When the moving comb-tooth plate is no longer under pressure, the rigid spring will assist the moving comb-tooth plate to rebound to its original position, thus playing a role in assisting the protection of the moving comb-tooth plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the device of the present utility model;

[0014] Figure 2 is a schematic structural diagram (front view) of the device of the present utility model;

[0015] Figure 3 is a partial sectional structural diagram of the device of the present utility model;

[0016] Figure 4 is a schematic structural diagram (front section) of the device of the present utility model;

[0017] Figure 5 is a schematic structural diagram of the static comb-tooth plate of the present utility model;

[0018] Figure 6 is a schematic structural diagram of the moving comb-tooth plate of the present utility model.

[0019] In the figure: 1. Beam-end concrete; 101. Static comb-tooth plate; 102. Moving comb-tooth plate; 103. Expansion joint; 2. Connecting component; 201. Connecting bearing; 202. Groove; 203. Support seat; 204. Sliding plate; 205. Plug; 3. Support component; 301. Elastic component; 302. Sleeve plate; 303. Connecting block; 304. Rigid spring; 4. Fixed plate; 401. First tooth groove; 402. Connecting plate; 403. Second tooth groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Referring to Figure 1-6 , the impact-resistant multi-directional displacement comb-tooth bridge expansion device includes two beam-end concretes 1. A static comb-tooth plate 101 is fixedly connected to the top of the beam-end concrete 1. A moving comb-tooth plate 102 is installed on the top of the two beam-end concretes 1. An expansion joint 103 is provided between the beam-end concretes 1. A connecting component 2 is installed on the inner wall of the beam-end concrete 1. The connecting component 2 is used to connect the two beam-end concretes 1. A supporting component 3 is fixedly connected to the bottom of the moving comb-tooth plate 102. The supporting component 3 is used to support the moving comb-tooth plate 102. The impact-resistant multi-directional displacement comb-tooth bridge expansion device further includes a connecting component 2 including a connecting support 201. A groove 202 is provided on the inner wall of the beam-end concrete 1. The connecting support 201 is fixedly installed in the inner cavity of the groove 202. A supporting seat 203 is fixedly connected to the side wall of the connecting support 201. Sliding pieces 204 are fixedly connected to both the upper and lower ends of the supporting seat 203. The sliding pieces 204 are in contact with the inner wall of the beam-end concrete 1. A plurality of pins 205 are inserted into the surface of the static comb-tooth plate 101. The pins 205 penetrate through the beam-end concrete 1 and the connecting support 201 located in the inner cavity of the beam-end concrete 1. The connecting support 201 is made of an elastic material, and the side wall of the connecting support 201 is in contact with the inner wall of the beam-end concrete 1.

[0022] It should be noted that: the beam-end concrete 1 will deform under the action of temperature and pressure, which will further cause the expansion joint 103 to expand or contract. At this time, the moving comb-tooth plate 102 slides relative to the static comb-tooth plate 101 to meet the change of the expansion joint 103. When the beam-end concrete 1 deforms, it will exert a force on the connecting component 2 in the middle of the beam-end concrete 1, that is, it will exert a force on the connecting support 201 and the support base 203. Since the connecting support 201 is in contact with the inner wall of the beam-end concrete 1, when the beam-end concrete 1 deforms, it will directly act on the connecting support 201. The connecting support 201 is made of an elastic material, and the connecting support 201 and the beam-end concrete 1 are penetrated by a dowel pin 205. Therefore, when the beam-end concrete 1 exerts a force on the connecting support 201, it will be offset by its own elastic characteristics, thus playing a role in protecting the support base 203. And the support base 203 is connected to the beam-end concrete 1 through a sliding plate 204. Therefore, when the beam-end concrete 1 deforms, the support base 203 slides relative to the beam-end concrete 1 through the sliding plate 204, thereby protecting the support base 203. The above all play a role in protecting the support base 203 between the beam-end concretes 1, avoiding that when the beam-end concrete 1 deforms, it directly acts on the support base 203, resulting in the deformation and rupture of the support base 203, and the beam-end concrete 1 will also rupture without support.

[0023] Refer to Figure 1-6 , the support component 3 includes an elastic component 301. The elastic component 301 is fixedly installed on the top of the support base 203, and the top end of the elastic component 301 is fixed to the bottom of the moving comb-tooth plate 102. The elastic component 301 includes a sleeve plate 302. The sleeve plate 302 is fixedly installed on the top of the support base 203. A connecting block 303 is slidably connected to the inner wall of the sleeve plate 302. A rigid spring 304 is fixedly connected between the connecting block 303 and the sleeve plate 302, and the top end of the connecting block 303 is fixed to the bottom of the moving comb-tooth plate 102. The rigid spring 304 is made of spring steel;

[0024] It should be noted that: when the moving comb-tooth plate 102 is subjected to the pressure of heavy load, it will deform downward and generate a downward pressure. At this time, the moving comb-tooth plate 102 will extend to both sides to relieve the pressure, and the moving comb-tooth plate 102 will also conduct the pressure to the elastic component 301, that is, the connecting block 303 slides into the inner cavity of the sleeve plate 302. At this time, the rigid spring 304 located between the connecting block 303 and the sleeve plate 302 will be compressed, thereby generating a rebounding force. When the moving comb-tooth plate 102 is no longer subjected to pressure, the rigid spring 304 will assist the moving comb-tooth plate 102 to rebound to its original position, thus playing a role in assisting the protection of the moving comb-tooth plate 102.

[0025] Refer to Figure 1-6, the static comb tooth plate 101 includes a fixing plate 4, the fixing plate 4 is fixedly installed on the top of the beam-end concrete 1, a first tooth groove 401 is formed on the side wall of the fixing plate 4, the moving comb tooth plate 102 includes a connecting plate 402, the connecting plate 402 is fixedly installed on the top of the connecting block 303, and the connecting plate 402 is in contact with the top of the beam-end concrete 1. Second tooth grooves 403 are formed on both side walls of the connecting plate 402, and the first tooth groove 401 and the second tooth groove 403 are engaged with each other. The connecting plate 402 is made of spring steel. It should be noted that when the static comb tooth plate 101 and the moving comb tooth plate 102 are deformed, that is, the connecting plate 402 and the fixing plate 4 will be deformed and extend to both sides. At this time, the second tooth groove 403 and the first tooth groove 401 on the side walls of the connecting plate 402 and the fixing plate 4 are engaged with each other, which can relieve the longitudinal pressure.

[0026] Operation method: The beam-end concrete 1 is affected by temperature and pressure and will deform, which will cause the expansion joint 103 to expand or contract. At this time, the moving comb tooth plate 102 slides relative to the static comb tooth plate 101 to meet the change of the expansion joint 103. When the beam-end concrete 1 deforms, it will exert a force on the connecting component 2 in the middle of the beam-end concrete 1, that is, on the connecting support 201 and the support base 203. Since the connecting support 201 is in contact with the inner wall of the beam-end concrete 1, when the beam-end concrete 1 deforms, it will directly act on the connecting support 201. The connecting support 201 is made of an elastic material, and the connecting support 201 and the beam-end concrete 1 are penetrated by a pin 205. Therefore, when the beam-end concrete 1 exerts a force on the connecting support 201, it will be offset by its own elastic characteristics, thus playing a role in protecting the support base 203. And the support base 203 is connected to the beam-end concrete 1 through a sliding piece 204. Therefore, when the beam-end concrete 1 deforms, the support base 203 slides relative to the beam-end concrete 1 through the sliding piece 204, thereby protecting the support base 203. The above all play a role in protecting the support base 203 between the beam-end concretes 1, avoiding that when the beam-end concrete 1 deforms, it directly acts on the support base 203, resulting in the deformation and rupture of the support base 203, and the beam-end concrete 1 will also rupture without support.

[0027] When the moving comb tooth plate 102 is subjected to the pressure of heavy load, it will deform downward and generate a downward pressure. At this time, the moving comb tooth plate 102 will extend to both sides to relieve the pressure, and the moving comb tooth plate 102 will also conduct the pressure to the elastic component 301, that is, the connecting block 303 slides into the inner cavity of the sleeve plate 302. At this time, the rigid spring 304 located between the connecting block 303 and the sleeve plate 302 will be compressed, thereby generating a rebounding force. When the moving comb tooth plate 102 is no longer subjected to pressure, the rigid spring 304 will assist the moving comb tooth plate 102 to rebound to its original position, thus playing a role in assisting the protection of the moving comb tooth plate 102.

[0028] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An impact-resistant multi-directional displacement comb plate bridge expansion device, comprising two beam end concrete (1), characterized in that: The top of the beam end concrete (1) is fixedly connected to a static comb tooth plate (101), the tops of the two beam end concretes (1) are installed with dynamic comb tooth plates (102), an expansion joint (103) is provided between the beam end concretes (1), a connection assembly (2) is installed on the inner wall of the beam end concrete (1), the connection assembly (2) is used to connect the two beam end concretes (1), the bottom of the dynamic comb tooth plate (102) is fixedly connected to a support assembly (3), the support assembly (3) is used to support the dynamic comb tooth plate (102), and further comprises: The connection assembly (2) comprises a connection support (201), the inner wall of the beam end concrete (1) is provided with a groove (202), the connection support (201) is fixedly installed in the inner cavity of the groove (202), the side wall of the connection support (201) is fixedly connected to a support seat (203), the upper and lower ends of the support seat (203) are fixedly connected to sliding plates (204), and the sliding plates (204) and the inner wall of the beam end concrete (1) are in contact with each other.

2. The impact-resistant multi-directional displacement comb plate bridge expansion device according to claim 1 is characterized in that: A plurality of latches (205) are inserted into the surface of the static comb tooth plate (101), the latches (205) penetrate the beam end concrete (1), and the latches (205) penetrate the connection support (201) located in the inner cavity of the beam end concrete (1).

3. The impact-resistant multi-directional displacement comb plate bridge expansion device according to claim 2 is characterized in that: The connection support (201) is made of elastic material, and the side wall of the connection support (201) is in contact with the inner wall of the beam end concrete (1).

4. The impact-resistant multi-directional displacement comb plate bridge expansion and contraction device according to claim 3 is characterized in that: The support component (3) comprises an elastic component (301), the elastic component (301) is fixedly mounted on the top of the support seat (203), and the top of the elastic component (301) and the bottom of the movable comb plate (102) are fixed.

5. The impact-resistant multi-directional displacement comb plate bridge expansion and contraction device according to claim 4 is characterized in that: The elastic component (301) comprises a sleeve plate (302), the sleeve plate (302) being fixedly mounted on the top of the support seat (203), and a connecting block (303) being slidably connected to the inner wall of the sleeve plate (302).

6. The impact-resistant multi-directional displacement comb plate bridge expansion and contraction device according to claim 5 is characterized in that: A rigid spring (304) is fixedly connected between the connecting block (303) and the sleeve plate (302), and the top of the connecting block (303) is fixed to the bottom of the movable comb plate (102), and the rigid spring (304) is made of spring steel.

7. The impact-resistant multi-directional displacement comb plate bridge expansion and contraction device according to claim 6 is characterized in that: The static comb tooth plate (101) comprises a fixed plate (4), the fixed plate (4) being fixedly mounted on the top of the beam end concrete (1), and a first tooth groove (401) being formed on a side wall of the fixed plate (4).

8. The impact-resistant multi-directional displacement comb plate bridge expansion and contraction device according to claim 7 is characterized in that: The movable comb tooth plate (102) comprises a connecting plate (402), the connecting plate (402) being fixedly mounted on the top of the connecting block (303), and the connecting plate (402) being in contact with the top of the beam end concrete (1), the side walls on both sides of the connecting plate (402) being provided with second tooth grooves (403), the first tooth grooves (401) and the second tooth grooves (403) being engaged with each other, and the connecting plate (402) being made of spring steel.

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