Expansion joint device for a bridge

Abstract

The utility model discloses a kind of expansion joint devices of bridge, including two expansion joint frames, two the expansion joint frame opposite end are uniformly provided with embedded length adjusting mechanism, the embedded length adjusting mechanism includes positioning sleeve, U embedded threaded tube, positioning baffle ring, spacer ring, transverse baffle and lock nut, two the expansion joint frame opposite end are uniformly spaced with positioning sleeve, the utility model structure scientific and reasonable, use safe and convenient, embedded length adjusting mechanism is provided, through the cooperation of positioning sleeve, U embedded threaded tube, positioning baffle ring, spacer ring, transverse baffle and lock nut, U embedded threaded tube is spliced on expansion joint frame, the convenience of disassembly and assembly is improved, stability is guaranteed simultaneously, and the length of U embedded threaded tube can be quickly adjusted according to the width of embedded position, adaptability is improved, and the efficiency of construction is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of expansion joint technology, specifically to an expansion joint device for bridges. Background Technology

[0002] Bridge expansion joints are joints installed between the ends of two beams, between the beam end and the abutment, or at the hinged joints of the bridge to accommodate the deformation of the bridge deck. The expansion joints are required to be able to expand and contract freely in two directions, parallel and perpendicular to the bridge axis, and to be firm and reliable. When vehicles pass over them, the ride should be smooth and without any bumps or noise.

[0003] However, existing expansion joint devices are inconvenient to adjust the length of the embedded parts according to the width of the embedded groove during pre-installation, which affects the installation effect. In addition, the splicing tightness is poor and it is easy to shake. Therefore, in order to avoid the above-mentioned technical problems, it is necessary to provide a bridge expansion joint device to overcome the defects of the prior art. Utility Model Content

[0004] This utility model provides a bridge expansion joint device, which can effectively solve the problems mentioned in the background art, such as the inconvenience of adjusting the length of the embedded part according to the width of the embedded groove, which affects the installation effect, and the poor splicing tightness, which easily leads to shaking.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a bridge expansion joint device, comprising two expansion joint frames, each of the two expansion joint frames having a pre-embedded length adjustment mechanism at opposite ends, the pre-embedded length adjustment mechanism comprising a positioning sleeve, a U-shaped pre-embedded threaded pipe, a positioning retaining ring, a washer, a transverse baffle and a locking nut;

[0006] The two expansion joint frames are equidistantly fitted with positioning sleeves at opposite ends. A U-shaped pre-embedded threaded pipe is movably fitted inside the positioning sleeve. A positioning retaining ring is threadedly fitted on the outside of the U-shaped pre-embedded threaded pipe, and a washer is rotatably connected to the other end of the positioning retaining ring.

[0007] A transverse baffle is movably sleeved on the outer side of the U-shaped pre-embedded threaded pipe at the position corresponding to the inner side of the expansion joint frame, and a locking nut is threadedly sleeved on one side of the transverse baffle on the outer side of the U-shaped pre-embedded threaded pipe.

[0008] Preferably, a support and elastic expansion mechanism is provided between the two expansion joint frames. The support and elastic expansion mechanism includes an elastic waterproof rubber, a central partition, a bushing, a positioning block, a tension spring, a limiting top rod, a limiting toothed plate, and a strip-shaped reinforcing plate.

[0009] Each of the two expansion joint frames is secured with an elastic waterproof rubber, and each of the two elastic waterproof rubbers is secured with a central partition.

[0010] The central partition is fitted with bushings at equal intervals inside, and the bushings are fitted with positioning blocks inside. Both ends of the positioning blocks are fitted with tension springs, and the other end of the tension springs is fitted with limit rods.

[0011] Both expansion joint frames are fitted with limiting toothed plates at their top ends, and strip-shaped reinforcing plates are fitted at equal intervals at the top end of the central partition.

[0012] Preferably, the inner wall of the positioning sleeve is in contact with the outer side of the U-shaped pre-embedded threaded pipe, and one end of the U-shaped pre-embedded threaded pipe passes through one end of the expansion joint frame.

[0013] Preferably, an embedding groove is provided inside the expansion joint frame at the position corresponding to the outer side of the elastic waterproof rubber, and the elastic waterproof rubber is arc-shaped.

[0014] Preferably, the other end of the limiting rod is fixedly connected to one end of the transverse baffle, the diameter of the tension spring is smaller than the diameter of the limiting rod, and the outer side of the limiting rod slides against the inner wall of the bushing.

[0015] Preferably, the two ends of the strip-shaped reinforcing plate engage with the inner wall of the limiting tooth plate, and the bottom end of the strip-shaped reinforcing plate slides against the top of the expansion joint frame.

[0016] Compared with the prior art, the advantages of this utility model are: the structure of this utility model is scientific and reasonable, and it is safe and convenient to use.

[0017] 1. It is equipped with a pre-embedded length adjustment mechanism. Through the cooperation of the positioning sleeve, U-shaped pre-embedded threaded pipe, positioning retaining ring, washer ring, and transverse baffle locking nut, the U-shaped pre-embedded threaded pipe can be easily spliced ​​onto the expansion joint frame, which improves the convenience of disassembly and assembly, while ensuring stability. Moreover, the length of the U-shaped pre-embedded threaded pipe can be quickly adjusted according to the width of the pre-embedded position, which improves adaptability and ensures construction efficiency.

[0018] 2. Equipped with a support and elastic expansion mechanism, the joints of the two expansion joint frames are improved through the cooperation of elastic waterproof rubber, central partition, strip reinforcement plate and limiting tooth plate, making the expansion joint frames more robust and stable. Through the cooperation of bushing, positioning block, tension spring and limiting rod, when the bridge deforms, the two expansion joint frames slide and contract inside the bushing, pushing the limiting rod, to prevent the bridge from cracking and being damaged. It can also recover quickly, improving adaptability. Attached Figure Description

[0019] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0020] In the attached diagram:

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the pre-embedded length adjustment mechanism of this utility model;

[0023] Figure 3 This is a structural schematic diagram of the support and elastic telescopic mechanism of this utility model;

[0024] Figure 4 This is a schematic diagram of the installation structure of the limiting top rod of this utility model;

[0025] Numbered in the diagram: 1. Expansion joint frame;

[0026] 2. Embedded length adjustment mechanism; 201. Positioning sleeve; 202. U-shaped embedded threaded pipe; 203. Positioning retaining ring; 204. Washer ring; 205. Transverse baffle; 206. Locking nut;

[0027] 3. Support and elastic telescopic mechanism; 301. Elastic waterproof rubber; 302. Central partition; 303. Bushing; 304. Positioning block; 305. Tension spring; 306. Limiting rod; 307. Limiting toothed plate; 308. Strip-shaped reinforcing plate. Detailed Implementation

[0028] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0029] Example: Figure 1-4 As shown, this utility model provides a technical solution, a bridge expansion joint device, including two expansion joint frames 1, each of the two expansion joint frames 1 is provided with a pre-embedded length adjustment mechanism 2 at opposite ends, the pre-embedded length adjustment mechanism 2 includes a positioning sleeve 201, a U-shaped pre-embedded threaded pipe 202, a positioning retaining ring 203, a washer 204, a transverse baffle 205 and a locking nut 206.

[0030] Two expansion joint frames 1 are equidistantly fitted with positioning sleeves 201 at opposite ends. U-shaped pre-embedded threaded pipes 202 are movably fitted inside the positioning sleeves 201. A positioning retaining ring 203 is threadedly fitted on the outside of the U-shaped pre-embedded threaded pipe 202, and a washer 204 is rotatably connected to the other end of the positioning retaining ring 203.

[0031] A transverse baffle 205 is movably sleeved on the outer side of the U-shaped pre-embedded threaded pipe 202 corresponding to the inner side of the expansion joint frame 1. A locking nut 206 is threadedly sleeved on one side of the U-shaped pre-embedded threaded pipe 202 corresponding to the transverse baffle 205. In order to facilitate the adjustment of the length of the U-shaped pre-embedded threaded pipe 202, the inner wall of the positioning sleeve 201 is in contact with the outer side of the U-shaped pre-embedded threaded pipe 202. One end of the U-shaped pre-embedded threaded pipe 202 passes through one end of the expansion joint frame 1.

[0032] A support and elastic expansion mechanism 3 is provided between the two expansion joint frames 1. The support and elastic expansion mechanism 3 includes an elastic waterproof rubber 301, a central partition plate 302, a bushing 303, a positioning block 304, a tension spring 305, a limiting top rod 306, a limiting toothed plate 307, and a strip-shaped reinforcing plate 308.

[0033] An elastic waterproof rubber 301 is snapped between the two expansion joint frames 1, and a central partition 302 is snapped between the two elastic waterproof rubbers 301. In order to improve the waterproof performance, an embedding groove is opened inside the expansion joint frame 1 at the position corresponding to the outer side of the elastic waterproof rubber 301. The elastic waterproof rubber 301 is arc-shaped.

[0034] The center partition 302 is equidistantly fitted with bushings 303, and the bushings 303 are fitted with positioning blocks 304. Both ends of the positioning blocks 304 are fitted with tension springs 305. The other end of the tension springs 305 is fitted with a limiting rod 306. In order to facilitate changing the distance between the two expansion joint frames 1, the other end of the limiting rod 306 is fixedly connected to one end of the transverse baffle 205. The diameter of the tension springs 305 is smaller than the diameter of the limiting rod 306, and the outer side of the limiting rod 306 slides against the inner wall of the bushings 303.

[0035] Both expansion joint frames 1 are fitted with limiting toothed plates 307 at their top ends, and strip-shaped reinforcing plates 308 are fitted at equal intervals at the top end of the central partition 302. In order to improve the stability of the splicing of the two expansion joint frames 1, the two ends of the strip-shaped reinforcing plates 308 are engaged with the inner wall of the limiting toothed plates 307, and the bottom end of the strip-shaped reinforcing plates 308 is slidably attached to the top end of the expansion joint frame 1.

[0036] The working principle and usage process of this utility model are as follows: First, one end of the U-shaped pre-embedded threaded pipe 202 is embedded inside the positioning sleeve 201, and the other end of the U-shaped pre-embedded threaded pipe 202 passes through the expansion joint frame 1. Then, the transverse baffle 205 is sleeved on the inner side of the expansion joint frame 1, and the transverse baffle 205 is fixed by the locking nut 206. In addition, the positioning retaining ring 203 is rotated to push the washer ring 204 to move, forcing one end of the washer ring 204 and one end of the transverse baffle 205 to fit against the outer and inner walls of the expansion joint frame 1, respectively, thus fixing the position of the U-shaped pre-embedded threaded pipe 202, ensuring stability, facilitating pre-embedding, and the positions of the washer ring 204 and the transverse baffle 205 can be adjusted as needed to change the length of the U-shaped pre-embedded threaded pipe 202 embedded in the positioning sleeve 201, thus improving adaptability.

[0037] Next, with the cooperation of the elastic waterproof rubber 301, the central partition 302 is easily positioned between the two expansion joint frames 1. Furthermore, with the cooperation of the strip-shaped reinforcing plate 308 and the limiting tooth plate 307, the tightness of the splicing of the two expansion joint frames 1 is improved, shaking is reduced, and the expansion joint frames 1 are made more robust and stable.

[0038] Finally, through the cooperation of bushing 303, positioning block 304, tension spring 305 and limiting rod 306, when the bridge deforms, the two expansion joint frames 1 push the limiting rod 306 to slide and contract inside the bushing 303, preventing the bridge from cracking and being damaged. In addition, the tension spring 305 can push the two expansion joint frames 1 to reset and restore their original state.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A bridge expansion joint device, comprising two expansion joint frames (1), characterized in that: Both expansion joint frames (1) are provided with a pre-embedded length adjustment mechanism (2) at opposite ends. The pre-embedded length adjustment mechanism (2) includes a positioning sleeve (201), a U-shaped pre-embedded threaded pipe (202), a positioning retaining ring (203), a washer (204), a transverse baffle (205), and a locking nut (206). Two expansion joint frames (1) are equidistantly fitted with positioning sleeves (201) at opposite ends. A U-shaped pre-embedded threaded pipe (202) is movably fitted inside the positioning sleeve (201). A positioning retaining ring (203) is threadedly fitted on the outside of the U-shaped pre-embedded threaded pipe (202), and a washer (204) is rotatably connected to the other end of the positioning retaining ring (203). A transverse baffle (205) is movably sleeved on the outer side of the U-shaped pre-embedded threaded pipe (202) at the position corresponding to the inner side of the expansion joint frame (1), and a locking nut (206) is threadedly sleeved on the outer side of the U-shaped pre-embedded threaded pipe (202) at the position corresponding to the transverse baffle (205).

2. A bridge expansion joint device as claimed in claim 1, wherein: A support and elastic expansion mechanism (3) is provided between the two expansion joint frames (1). The support and elastic expansion mechanism (3) includes an elastic waterproof rubber (301), a central partition (302), a bushing (303), a positioning block (304), a tension spring (305), a limiting top rod (306), a limiting toothed plate (307), and a strip-shaped reinforcing plate (308). An elastic waterproof rubber (301) is snapped between each of the two expansion joint frames (1), and a central partition plate (302) is snapped between each of the two elastic waterproof rubbers (301). The central partition (302) is equidistantly fitted with bushings (303), and the bushings (303) are fitted with positioning blocks (304). Both ends of the positioning blocks (304) are fitted with tension springs (305), and the other end of the tension springs (305) is fitted with limit rods (306). Both expansion joint frames (1) are fitted with limiting toothed plates (307) at their top ends, and strip-shaped reinforcing plates (308) are fitted at equal intervals at the top end of the central partition (302).

3. A bridge expansion joint device as claimed in claim 1, wherein: The inner wall of the positioning sleeve (201) is in contact with the outer side of the U-shaped pre-embedded threaded pipe (202), and one end of the U-shaped pre-embedded threaded pipe (202) passes through one end of the expansion joint frame (1).

4. A bridge expansion joint device as claimed in claim 2, wherein: The expansion joint frame (1) has an embedded groove at the position corresponding to the outer side of the elastic waterproof rubber (301), and the elastic waterproof rubber (301) is arc-shaped.

5. A bridge expansion joint device as claimed in claim 2, wherein: The other end of the limiting rod (306) is fixedly connected to one end of the transverse baffle (205). The diameter of the tension spring (305) is smaller than the diameter of the limiting rod (306), and the outer side of the limiting rod (306) slides against the inner wall of the bushing (303).

6. A bridge expansion joint device as defined in claim 2, wherein: The two ends of the strip-shaped reinforcing plate (308) engage with the inner wall of the limiting tooth plate (307), and the bottom end of the strip-shaped reinforcing plate (308) slides against the top end of the expansion joint frame (1).

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