A boltless comb-tooth plate multi-directional displacement expansion joint device

Abstract

This utility model provides a boltless comb-tooth plate multi-directional displacement expansion joint device, relating to the field of bridge construction technology. It includes a bridge body, with a displacement expansion joint assembly installed on the inner side of the bridge body. The displacement expansion joint assembly includes main comb teeth installed on the inner side of the bridge body, and auxiliary comb teeth installed on the left side of the main comb teeth. Anchor plates are provided at the bottom ends of both the main and auxiliary comb teeth, and the main and auxiliary comb teeth mesh with each other. Through the arrangement of the main comb teeth, auxiliary comb teeth, and anchor plates, the entire assembly is formed by integral casting and welding. This allows for only one welding of the anchor plates and one-time overall concrete pouring on-site, resulting in high overall strength and greater convenience and speed in installation. Furthermore, the boltless connection eliminates longitudinal displacement and shearing when vehicles pass longitudinally, ensuring the stability of the device and improving its durability and reliability.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, and in particular to a boltless comb-tooth plate multi-directional displacement expansion joint device. Background Technology

[0002] During bridge construction, to prevent damage caused by thermal expansion and contraction, gaps are left at intervals to allow for bridge deformation. As a result, the presence of these gaps causes vibrations when vehicles pass over them. Therefore, expansion joints are installed at the gaps between adjacent sections of the bridge to make the passage of vehicles smoother.

[0003] A search revealed that the document with publication number "CN215164618U" mentions "This utility model relates to a novel multi-directional displacement boltless comb-type expansion joint, comprising several sets of identical expansion joint assemblies. The expansion joint assembly includes a large toothed plate, a small toothed plate, a stainless steel sliding plate, a large toothed plate anchor plate, a small toothed plate anchor plate, a multi-directional displacement rotating shaft, a bushing, and a waterproof device. The stainless steel sliding plate is connected below the small toothed plate. Several large toothed plate anchor plates are fixedly connected to the lower side of the large toothed plate, and several small toothed plate anchor plates are fixedly connected to the lower side of the small toothed plate." The bushings are welded to the bottom of the expansion joint assembly. Each expansion joint assembly has two bushings, located at both ends of the large toothed plate. The multi-directional displacement rotating shaft passes through the adjacent bushings, connecting two adjacent expansion joint assemblies together. In use, multiple expansion joint assemblies are assembled together, allowing the expansion joint components connected to the multi-directional displacement rotating shaft to rotate axially. Simultaneously, there are gaps between the two expansion joint assemblies, enabling the expansion joint as a whole to achieve multi-directional displacement, resist multi-directional stress, better adapt to complex and changing application environments, and extend the service life of the expansion joint.

[0004] However, most existing telescopic devices use bolts for anchoring, but the steel plate is prone to deformation due to long-term rolling by vehicles, and the nuts are prone to loosening, disengagement, and shearing of the bolts over long periods of time. On the other hand, some existing boltless telescopic devices have complex overall structures and are troublesome to install.

[0005] Therefore, we provide a boltless comb-tooth plate multi-directional displacement expansion joint device to solve the above problems. Utility Model Content

[0006] To overcome the above deficiencies, this utility model provides a boltless comb-tooth plate multi-directional displacement expansion joint device, which aims to solve the problems mentioned above.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A boltless comb-tooth plate multi-directional displacement expansion joint device includes a bridge body, a displacement expansion joint assembly installed on the inner side of the bridge body, the displacement expansion joint assembly including a main comb tooth installed on the inner side of the bridge body, a secondary comb tooth installed on the left side of the main comb tooth, and an anchor plate frame provided at the bottom end of both the main comb tooth and the secondary comb tooth.

[0009] As a further description of the above technical solution:

[0010] The main comb teeth and the auxiliary comb teeth mesh with each other, and there is a gap between the main comb teeth and the auxiliary comb teeth. Both the main comb teeth and the auxiliary comb teeth are made of high-strength structural steel and are integrally cast.

[0011] As a further description of the above technical solution:

[0012] The anchor plate frame is integrally welded with the main comb teeth and the auxiliary comb teeth, and the anchor plate frame, the main comb teeth and the auxiliary comb teeth are made of the same structural steel.

[0013] As a further description of the above technical solution:

[0014] A crossbar is installed between the anchor plate frames, and a fixing ring is sleeved on the outside of the crossbar. The fixing ring is located on both sides of the anchor plate frame. Both the anchor plate frame and the crossbar are cast onto the bridge body with concrete.

[0015] As a further description of the above technical solution:

[0016] A support base plate is welded to the bottom left end of the anchor plate frame, a comb tooth base plate is welded to the bottom end of the main comb tooth, and a comb tooth panel is welded to the bottom end of the secondary comb tooth. The comb tooth base plate and the comb tooth panel are tightly fitted together.

[0017] As a further description of the above technical solution:

[0018] A displacement support is installed at the top of the support base plate, and the top of the displacement support is in contact with the bottom surface of the comb base plate.

[0019] As a further description of the above technical solution:

[0020] The displacement support is equipped with a buffer pad, which is made of highly elastic rubber and is located directly below the position where the main comb teeth and the secondary comb teeth intersect.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] By setting up the main comb teeth, secondary comb teeth, and anchor plate frame, the whole is formed by integral casting and welding. This means that only one welding of the anchor plate frame and one overall concrete pouring are required on the installation site. This results in high overall strength and makes the installation more convenient and faster. At the same time, the whole is boltless, and there is no longitudinal shearing when vehicles pass by, which ensures the stability of the device and improves its durability and reliability.

[0023] By setting up the comb tooth base plate, comb tooth panel, and displacement support, the displacement support applies pre-pressure to the comb tooth base plate, making the comb tooth base plate and comb tooth panel fit together to form a double-layer stainless steel plate protection. This prevents dust and debris from entering the lower part of the main comb tooth and auxiliary comb tooth, causing tooth warping. During use, when a vehicle passes through the gap, the main comb tooth and auxiliary comb tooth are subjected to force. At the same time, the buffer pad inside the displacement support provides buffer support for the main comb tooth and auxiliary comb tooth, thereby reducing the impact force and the noise generated when the vehicle passes by. This also prevents the device from being subjected to rigid impact, which could lead to excessive deformation and improve the durability of the device. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the cooperative structure of the bridge body, anchor plate frame, and fixing ring rod of this utility model;

[0026] Figure 3 This is a schematic diagram of the overall structure of the displacement expansion joint assembly of this utility model;

[0027] Figure 4 This is a schematic diagram of the planar structure of the displacement expansion joint assembly of this utility model;

[0028] Figure 5 This is a schematic diagram of the mating structure of the comb base plate, the comb base plate and the buffer pad block of this utility model.

[0029] Numbered in the diagram: 1. Bridge main body; 2. Expansion joint assembly; 201. Main comb teeth; 202. Secondary comb teeth; 203. Anchor plate frame; 204. Installation crossbar; 205. Fixing ring rod; 206. Support base plate; 207. Comb tooth base plate; 208. Comb tooth panel; 209. Expansion support; 210. Buffer pad block. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figure 1-5 As shown, this utility model provides a technical solution: a boltless comb-tooth plate multi-directional displacement expansion joint device, including a bridge body 1, a displacement expansion joint assembly 2 installed on the inner side of the bridge body 1, the displacement expansion joint assembly 2 including a main comb tooth 201 installed on the inner side of the bridge body 1, a secondary comb tooth 202 installed on the left side of the main comb tooth 201, and an anchor plate frame 203 provided at the bottom end of both the main comb tooth 201 and the secondary comb tooth 202.

[0032] Furthermore, the main comb teeth 201 and the auxiliary comb teeth 202 mesh with each other, and there is a gap between the main comb teeth 201 and the auxiliary comb teeth 202. Both the main comb teeth 201 and the auxiliary comb teeth 202 are made of high-strength structural steel and are integrally cast. Through the meshing of the gap between the main comb teeth 201 and the auxiliary comb teeth 202, it can be used for a range of expansion and contraction of 80mm-1600mm. At the same time, the choice of high-strength structural steel gives the main comb teeth 201 and the auxiliary comb teeth 202 good wear resistance and impact resistance, extending the service life of the device.

[0033] Furthermore, the anchor plate frame 203 is integrally welded to the main comb teeth 201 and the auxiliary comb teeth 202. The anchor plate frame 203, the main comb teeth 201, and the auxiliary comb teeth 202 are made of the same structural steel. Through integral welding, the connection strength between the anchor plate frame 203 and the main comb teeth 201 and the auxiliary comb teeth 202 is enhanced, avoiding loosening or falling off due to long-term use. Moreover, the whole is boltless, and there is no longitudinal shearing when vehicles pass longitudinally, ensuring the stability of the device. At the same time, the selection of structural steel of the same material ensures the uniformity and coordination of the overall structure, further improving the durability and reliability of the device.

[0034] Furthermore, an installation crossbar 204 is installed between the anchor plate frames 203. A fixing ring rod 205 is sleeved on the outside of the installation crossbar 204. The fixing ring rod 205 is located on both sides of the anchor plate frame 203. Both the anchor plate frame 203 and the installation crossbar 204 are cast onto the bridge body 1 with concrete. Through the cooperation of the installation crossbar 204 and the fixing ring rod 205, the device can be installed quickly. At the same time, the whole is pre-compressed and welded. On the installation site, only one welding and one overall concrete pouring are required. The overall installation strength is high, which is more convenient and faster.

[0035] Furthermore, a support base plate 206 is welded to the bottom left end of the anchor plate frame 203, a comb base plate 207 is welded to the bottom end of the main comb tooth 201, and a comb panel 208 is welded to the bottom end of the auxiliary comb tooth 202. The comb base plate 207 and the comb panel 208 are tightly fitted together. The close fit between the comb base plate 207 and the comb panel 208 forms a double-layer stainless steel plate protective structure, preventing dust and debris from entering the lower part of the main comb tooth 201 and the auxiliary comb tooth 202 and causing tooth warping, thus ensuring the stability of the device.

[0036] Furthermore, a displacement support 209 is installed at the top of the support base plate 206. The top of the displacement support 209 is in contact with the bottom surface of the comb base plate 207. The displacement support 209 applies pre-pressure to the comb base plate 207 to support the comb base plate 207 and the comb panel 208, ensuring the fit between the comb base plate 207 and the comb panel 208 during long-term use and ensuring dustproof effect.

[0037] Furthermore, a buffer pad 210 is installed inside the displacement support 209. The buffer pad 210 is made of highly elastic rubber and is located directly below the intersection of the main comb teeth 201 and the secondary comb teeth 202. During use, when a vehicle passes through the gap, the main comb teeth 201 and the secondary comb teeth 202 are subjected to force. At the same time, the buffer pad 210 inside the displacement support 209 provides buffer support for the main comb teeth 201 and the secondary comb teeth 202, thereby reducing the impact force and reducing the noise generated when the vehicle passes by.

[0038] Working principle: In use, the entire assembly is moved to the desired point. Anchor plate frame 203 is then welded to the bottom of the main comb teeth 201 and auxiliary comb teeth 202. Next, installation crossbar 204 is inserted through all anchor plate frames 203. Then, fixing ring rod 205 is installed on the installation crossbar 204. The main comb teeth 201 and auxiliary comb teeth 202 are then placed in the bridge gaps according to requirements. Finally, concrete is poured onto the bridge body 1. After installation, the main comb teeth 201 and auxiliary comb teeth 202... When the bridge deforms due to thermal expansion and contraction, the teeth can move to each other to adapt to different ranges of expansion and contraction. At the same time, the double-layer stainless steel plates of the comb tooth base plate 207 and the comb tooth panel 208 work together to effectively prevent dust and debris from entering and causing tooth warping. When a vehicle passes by, the buffer pad 210 inside the displacement support 209 provides buffer support for the main comb tooth 201 and the secondary comb tooth 202, reducing impact and noise and improving driving comfort. This completes the use process of a boltless comb tooth plate multi-directional displacement expansion joint device.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A boltless comb-tooth plate multi-directional displacement expansion joint device, comprising a bridge body (1), characterized in that: The inner side of the bridge body (1) is equipped with a displacement expansion joint assembly (2). The displacement expansion joint assembly (2) includes a main comb tooth (201) installed on the inner side of the bridge body (1). A secondary comb tooth (202) is installed on the left side of the main comb tooth (201). An anchor plate frame (203) is provided at the bottom of both the main comb tooth (201) and the secondary comb tooth (202).

2. The boltless comb-tooth plate multi-directional displacement expansion joint device according to claim 1, characterized in that, The main comb teeth (201) and the auxiliary comb teeth (202) mesh with each other, and there is a gap between the main comb teeth (201) and the auxiliary comb teeth (202). The main comb teeth (201) and the auxiliary comb teeth (202) are both made of high-strength structural steel, and the main comb teeth (201) and the auxiliary comb teeth (202) are integrally cast.

3. The boltless comb-tooth plate multi-directional displacement expansion joint device according to claim 1, characterized in that, The anchor plate frame (203) is integrally welded with the main comb tooth (201) and the auxiliary comb tooth (202), and the anchor plate frame (203) is made of the same structural steel as the main comb tooth (201) and the auxiliary comb tooth (202).

4. The boltless comb-tooth plate multi-directional displacement expansion joint device according to claim 1, characterized in that, An installation crossbar (204) is installed between the anchor plate frame (203). A fixing ring rod (205) is sleeved on the outside of the installation crossbar (204). The fixing ring rod (205) is located on both sides of the anchor plate frame (203). The anchor plate frame (203) and the installation crossbar (204) are both cast onto the bridge body (1) by concrete.

5. The boltless comb-tooth plate multi-directional displacement expansion joint device according to claim 1, characterized in that, The bottom left end of the anchor plate frame (203) is welded with a support base plate (206), the bottom end of the main comb tooth (201) is welded with a comb tooth base plate (207), and the bottom end of the auxiliary comb tooth (202) is welded with a comb tooth panel (208). The comb tooth base plate (207) and the comb tooth panel (208) are closely fitted together.

6. The boltless comb-tooth plate multi-directional displacement expansion joint device according to claim 5, characterized in that, The top of the support base plate (206) is equipped with a displacement support (209), and the top of the displacement support (209) is in contact with the bottom surface of the comb base plate (207).

7. The boltless comb-tooth plate multi-directional displacement expansion joint device according to claim 6, characterized in that, The displacement support (209) is equipped with a buffer pad (210), which is made of highly elastic rubber and is located directly below the intersection of the main comb teeth (201) and the secondary comb teeth (202).

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