Comb tooth type bridge expansion joint

Abstract

The utility model relates to the technical field of expansion joints, and provides a comb tooth type bridge expansion joint which comprises two symmetrically-arranged installation bases, comb tooth plates are installed on the top walls of the installation bases, comb teeth between the two comb tooth plates are arranged in a staggered mode, installation grooves are formed in the top walls of the installation bases, and the comb tooth plates are arranged in the installation grooves. A mounting groove is formed in the mounting base, a limiting block matched with the mounting groove is fixed to the tail of the comb plate, the comb plate is fixedly connected with the corresponding mounting base through a fixing bolt, and a sliding plate is arranged on the side wall of the mounting base on one side in an attached mode. The comb plates can be directly taken down, so that the position of the expansion joint can be conveniently cleaned, meanwhile, when the sealing water-stop belt needs to be replaced, the sealing water-stop belt can be taken down and replaced only by taking down the corresponding comb plates, meanwhile, the two ends of the sealing water-stop belt can be tightly pressed in the limiting clamping grooves when the comb plates are installed, and the sealing water-stop belt can be conveniently replaced. And the sealing water-stop belt is prevented from accidentally falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of expansion joints, and in particular to a comb-tooth type bridge expansion joint. Background Art

[0002] Bridge expansion joints are expansion devices installed at the movable ends of the bridge superstructure and the fractures of the bridge deck. The purpose of installing expansion joints is to ensure that the changes in the superstructure can be realized under temperature changes, concrete shrinkage and creep, and loads without generating additional internal forces, and to ensure smooth driving. Usually, domestic bridge expansion joints are set at the movable ends and abutments of the superstructure, as well as at the joints of the superstructures, and at the transverse directions of the carriageways and sidewalks of general highway bridges. The railings must also be interrupted at the joints to ensure the free displacement of the structure and avoid cracking; the bridge deck waterproof layer at the joints should still be properly laid to prevent rainwater from eroding the load-bearing structure. Among them, the comb-tooth bridge expansion joint is an important type of bridge expansion joint.

[0003] For example, the patent with publication number CN 215593664 U discloses a one-time formed comb-tooth plate type bridge expansion joint, which includes special-shaped steel, tooth plates, and anchors. The anchors, the special-shaped steel and the tooth plates are integrally formed by molding. However, the above-mentioned comb-tooth plate type bridge expansion joint still has certain shortcomings: for example, the anchors, the special-shaped steel and the tooth plates in the comb-tooth plate type bridge expansion joint are all press-forged by a mold using an oil press in a factory, and are integrally formed. However, since the service life of steel is generally 40-50 years, and the service life of the sealing strip in the expansion joint is generally 15 years, the sealing strip needs to be disassembled and replaced regularly. The above-mentioned expansion joint adopts an integrated setting, so when replacing the sealing strip, the entire expansion joint needs to be disassembled and replaced, which is cumbersome to operate, labor-intensive, and has high disassembly costs. Utility Model Content

[0004] The utility model proposes a comb-tooth type bridge expansion joint, which solves the problem that the expansion joint in the related art adopts an integrated setting, so when replacing the sealing strip, the entire expansion joint needs to be dismantled and replaced, which results in cumbersome operation, large labor workload and high dismantling cost.

[0005] The technical solution of the utility model is as follows:

[0006] A comb-tooth bridge expansion joint includes two symmetrically arranged mounting bases, the top walls of the mounting bases are both installed with comb-tooth plates, the comb teeth between the two comb-tooth plates are staggered, the top walls of the mounting bases are provided with mounting grooves, the tails of the comb-tooth plates are fixed with limit blocks that match the mounting grooves, the comb-tooth plates are fixedly connected to the corresponding mounting bases by fixing bolts, a sliding plate is fitted on the side wall of one mounting base, the sliding plate is fixedly connected to the comb teeth of the corresponding comb-tooth plate by reinforcing bolts, and a sealing waterstop is installed between the mounting base and the sliding plate on the other side. The mounting base is used to fix the comb-tooth plates and facilitate the installation of the device in the corresponding reserved groove of the bridge, the mounting groove is used to cooperate with the limit blocks to stably fix the comb-tooth plates on the mounting base, and the sealing waterstop is used to prevent rainwater from dripping from the expansion joint position. In the utility model, the comb plate is detachably fixedly connected to the mounting base. When the expansion joint position needs to be cleaned, the comb plate can be directly removed, thereby facilitating the cleaning of the expansion joint position. At the same time, when the sealing waterstop needs to be replaced, only the corresponding comb plate needs to be removed to remove the sealing waterstop and replace it. At the same time, the comb plate can tightly press the two ends of the sealing waterstop into the limit slot during installation to prevent the sealing waterstop from accidentally falling off.

[0007] The two ends of the sealing water stop are arranged in an L shape, and the mounting base and the sliding plate are both provided with limit slots that match the sealing water stop. The two ends of the sealing water stop are arranged in an L shape, which can be conveniently inserted into the limit slots initially and is not easy to be separated. When the comb plate is subsequently installed, the two ends of the sealing water stop can be stably limited in the limit slots.

[0008] A plurality of anchoring steel bars are evenly fixed on the outer side of the bottom wall of the installation base. The arranged anchoring steel bars are used for welding with the embedded steel bars in the reserved groove of the bridge, so as to ensure the stability of the device installation.

[0009] The comb plate and the limit block are integrated, the limit block is T-shaped, and the comb plate and the mounting base are made of stainless steel. The use of stainless steel for the comb plate and the mounting base can effectively prevent the comb plate and the mounting base from being exposed to the external environment for a long time and being corroded by rain, thereby ensuring the service life of the device.

[0010] The comb teeth of the comb plate are in any one of a triangle, a rectangle and a trapezoid.

[0011] The beneficial effects of the utility model are:

[0012] 1. In the utility model, the comb plate is detachably fixedly connected to the mounting base. When the expansion joint position needs to be cleaned, the comb plate can be directly removed, thereby facilitating the cleaning of the expansion joint position. At the same time, when the sealing waterstop needs to be replaced, only the corresponding comb plate needs to be removed to remove the sealing waterstop and replace it. At the same time, the comb plate can tightly press the two ends of the sealing waterstop into the limit slot during installation to prevent the sealing waterstop from accidentally falling off.

[0013] 2. The anchoring steel bars provided in the utility model are used for welding with the embedded steel bars in the reserved grooves of the bridge, so as to ensure the stability of the installation of the device. The comb plate and the mounting base are made of stainless steel, which can effectively prevent the comb plate and the mounting base from being exposed to the external environment for a long time and being corroded by rainwater, thereby ensuring the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0015] Figure 1 It is a three-dimensional diagram of the top structure of the utility model;

[0016] Figure 2 This is a three-dimensional diagram of the bottom structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the explosion structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the utility model in which the sealing water stop belt, the sliding plate and the mounting base are separated.

[0019] In the figure: 1. Installation base; 2. Comb plate; 3. Installation groove; 4. Limit block; 5. Fixing bolt; 6. Sliding plate; 7. Reinforcement bolt; 8. Sealing waterstop; 9. Limit slot; 10. Anchor steel bar. DETAILED DESCRIPTION

[0020] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example 1

[0022] like Figure 1~Figure 4 As shown, this embodiment proposes:

[0023] A comb-tooth bridge expansion joint comprises two symmetrically arranged mounting bases 1, the top walls of the mounting bases 1 are both installed with comb-tooth plates 2, the comb teeth between the two comb-tooth plates 2 are staggered, the top wall of the mounting base 1 is provided with a mounting groove 3, the tail of the comb-tooth plate 2 is fixed with a limit block 4 that matches the mounting groove 3, the comb-tooth plate 2 is fixedly connected with the corresponding mounting base 1 by a fixing bolt 5, a sliding plate 6 is fitted on the side wall of the mounting base 1 on one side, the sliding plate 6 is fixedly connected with the comb teeth of the corresponding comb-tooth plate 2 by a reinforcing bolt 7, and a sealing water stop 8 is installed between the mounting base 1 and the sliding plate 6 on the other side. The two ends of the sealing water stop 8 are arranged in an L shape, and the mounting base 1 and the sliding plate 6 are both provided with a limit slot 9 that matches the sealing water stop 8.

[0024] In this embodiment, the installation base 1 is used to fix the comb plate 2, and it is convenient to install the device in the corresponding reserved groove of the bridge. The installation groove 3 is used to cooperate with the limit block 4 to stably fix the comb plate 2 on the installation base 1. The sealing water stop 8 is used to prevent rainwater from dripping from the expansion joint position. In the utility model, the comb plate 2 is detachably fixedly connected to the installation base 1. When the expansion joint position needs to be cleaned, the comb plate 2 can be directly removed, so as to facilitate the cleaning of the expansion joint position. At the same time, when the sealing water stop 8 needs to be replaced, it is only necessary to remove the corresponding comb plate 2 to remove the sealing water stop 8. At the same time, the comb plate 2 can press the two ends of the sealing water stop 8 tightly in the limit card groove 9 during installation to prevent the sealing water stop 8 from accidentally falling off.

[0025] Example 2

[0026] like Figure 1~Figure 4 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment further proposes:

[0027] A plurality of anchoring steel bars 10 are evenly fixed on the outer side of the bottom wall of the mounting base 1. The comb plate 2 is integrated with the limit block 4, and the limit block 4 is arranged in a T-shape. The comb plate 2 and the mounting base 1 are both made of stainless steel. The comb teeth of the comb plate 2 are in any one of a triangle, a rectangle, and a trapezoid.

[0028] In this embodiment, the provided anchor steel bars 10 are used for welding with the embedded steel bars in the reserved grooves of the bridge, so as to ensure the stability of the installation of the device. The comb plate 2 and the mounting base 1 are made of stainless steel, which can effectively prevent the comb plate 2 and the mounting base 1 from being exposed to the external environment for a long time and being corroded by rainwater, thereby ensuring the service life of the device.

[0029] Working principle:

[0030] When the utility model is in use, firstly, the mounting bases 1 on both sides are mounted on both sides of the reserved groove of the bridge. During the installation process, firstly, the anchor steel bars 10 are welded and fixed to the embedded steel bars in the reserved groove of the bridge. After the fixing is completed, concrete or other materials are poured. Then, the comb plate 2 on the right is fixedly connected to the sliding plate 6 by the reinforcing bolts 7, and then fixedly connected to the corresponding mounting base 1 by the fixing bolts 5. Then, the two ends of the sealing waterstop 8 are respectively clamped in the corresponding limiting grooves 9. Finally, the comb plate 2 on the left is fixedly connected to the corresponding mounting base 1 by the fixing bolts 5. During the fixing process, the comb plate 2 on the left can press the two ends of the sealing waterstop 8 tightly in the limiting grooves 9 to prevent the sealing waterstop 8 from accidentally falling off. When the sealing waterstop 8 is damaged after long-term use, the sealing waterstop 8 can be removed and replaced by simply disassembling the comb plate 2 on the left side. There is no need to disassemble and replace the entire expansion joint. When it is necessary to clean up the debris in the expansion joint, the comb plates 2 on both sides can be removed to facilitate cleaning. At the same time, the comb plates 2 are detachable and can be replaced with comb plates 2 of different types of teeth. The operation is simple and convenient.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A comb-tooth bridge expansion joint, characterized in that: The invention comprises two symmetrically arranged mounting bases (1), the top walls of the mounting bases (1) are both provided with comb plates (2), the comb teeth of the two comb plates (2) are arranged in a staggered manner, the top wall of the mounting base (1) is provided with a mounting groove (3), the tail of the comb plate (2) is fixed with a limit block (4) which matches the mounting groove (3), the comb plate (2) is fixedly connected to the corresponding mounting base (1) by means of fixing bolts (5), a sliding plate (6) is fittedly arranged on the side wall of the mounting base (1) on one side, the sliding plate (6) is fixedly connected to the comb teeth of the corresponding comb plate (2) by means of reinforcing bolts (7), and a sealing water stop strip (8) is installed between the mounting base (1) and the sliding plate (6) on the other side.

2. The comb-tooth bridge expansion joint according to claim 1, characterized in that: The two ends of the sealing water stop strip (8) are arranged in an L shape, and both the mounting base (1) and the sliding plate (6) are provided with limit slots (9) matching the sealing water stop strip (8).

3. The comb-tooth bridge expansion joint according to claim 1, characterized in that: A plurality of anchoring steel bars (10) are evenly fixed on the outer side of the bottom wall of the installation base (1).

4. The comb-tooth bridge expansion joint according to claim 1, characterized in that: The comb plate (2) and the limit block (4) are arranged in an integrated manner, the limit block (4) is arranged in a T-shape, and the comb plate (2) and the mounting base (1) are both made of stainless steel.

5. The comb-tooth bridge expansion joint according to claim 1, characterized in that: The comb teeth of the comb tooth plate (2) are in any one of a triangle, a rectangle and a trapezoid.

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