Bridge expansion joint device

Abstract

A bridge expansion joint device comprises a joint crossing plate and a fixing plate which are matched with each other, the joint crossing plate is installed in a first installation notch of a first beam body, the fixing plate is installed in a second installation notch of a second beam body, a lower supporting base, an upper pressing base, a rotating shaft and a height adjusting assembly are arranged in the first installation notch, and the height adjusting assembly is fixed in the first installation notch. The lower supporting seat and the upper pressing seat are both fixed on the height adjusting assembly, the rotating shaft is arranged on the lower supporting seat in a penetrating mode and distributed in the transverse bridge direction, the upper pressing seat is arranged above the lower supporting seat and tightly presses the rotating shaft, and the upper pressing seat and the lower supporting seat are connected and fixed through rivets. Compared with the prior art, the bridge expansion joint device has the advantages that the lower supporting seat and the upper pressing seat of the bridge expansion joint device are connected in a riveting mode through the rivets instead of a bolt fastening mode, bolt-free installation is achieved, bolt holes do not exist in a plate face, noise generated by vehicle passing is reduced, the problem that bolts and nuts are loosened can be solved, and the reliability of the expansion joint device is improved; and the lower bracket and the upper pressing seat are directly welded and fixed on the height adjusting assembly, so that the installation is more convenient.

Description

Technical Field

[0001] The utility model relates to a bridge expansion joint device. Background Technique

[0002] During the operation of bridge engineering, creep caused by vehicle loads, bridge own materials and temperature, wind action, etc., causes deformations such as bridge shrinkage and elongation. The expansion joint device is one of the important functional components of bridge engineering to meet the requirements of bridge deformation. Usually, expansion joint devices are installed between bridges and between bridges and abutments. In order to make vehicles drive safely and smoothly, the expansion joint device installed on the bridge must meet the various change requirements of the beam body. Although the conventional comb tooth plate expansion joint can meet the basic requirements of the beam body's telescopic displacement, its on-site adjustment and installation process are relatively complex and difficult. In addition, as disclosed in the Chinese utility model patent with the patent number 201821897603.6 (the authorized announcement number is CN 209353219 U), "A Bridge Expansion Joint Structure", the cross-seam plate of this expansion joint structure is welded to the rotating shaft as a whole, and then installed on the support seat. The pressure seat presses on the rotating shaft and is fastened with bolts. The disadvantage of this structure is that the pressure seat and the support seat adopt a split structure and are connected and fixed with bolts, which will cause the phenomenon of bolt loosening. In addition, bolt holes are provided on the plate surface, increasing the vehicle passing noise. To sum up, it is necessary to further improve the existing bridge expansion joint device. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a bridge expansion joint device that can reduce the risk of the expansion joint device falling off in view of the above-mentioned prior art status.

[0004] The technical solution adopted by the utility model to solve the above technical problem is: a bridge expansion joint device, including a cross-seam plate and a fixed plate that cooperate with each other. The cross-seam plate is installed in the first installation notch of the first beam body, and the fixed plate is installed in the second installation notch of the second beam body. It is characterized in that: a lower support seat, an upper pressure seat, a rotating shaft and a height adjustment component are provided in the first installation notch. The height adjustment component is fixed in the first installation notch. The lower support seat and the upper pressure seat are both fixed on the height adjustment component. The rotating shaft is arranged on the lower support seat and distributed along the transverse bridge direction. The upper pressure seat is arranged above the lower support seat and presses the rotating shaft tightly. The upper pressure seat and the lower support seat are connected and fixed by rivets.

[0005] In order to effectively support the lower support seat, so that the installation structure of the cross-seam plate is more firm, a support frame is provided below the lower support seat, and the support frame is welded and fixed on the height adjustment component. With such a setting, the welding size between the lower support seat and the height adjustment component is increased, thereby enhancing the overall connection strength of the expansion joint device.

[0006] The support frame and / or the height adjustment component have relief holes. With such a setting, while ensuring the strength, the weight is reduced.

[0007] In order to reliably weld and fix the lower support base, the upper pressing base and the support frame on the height-adjusting component, the inner side of the height-adjusting component facing the cross-seam plate is a vertical plane, and the lower support base, the upper pressing base and the support frame are all welded and fixed on the vertical plane.

[0008] In order to protect the expansion device, an anti-collision baffle is welded and fixed on the outer side of the height-adjusting component.

[0009] In order to make the installation structure of the lower support base and the upper pressing base more firm, the lower support base, the upper pressing base, the height-adjusting component and the support frame are all spaced apart along the transverse bridge direction. One group of the lower support base and the upper pressing base corresponds to at least two height-adjusting components, and the support frame corresponds to the height-adjusting component one by one.

[0010] In order to reliably fix the upper pressing base on the lower support base, the upper pressing base is a square block, and mounting holes are opened at the four corners of the upper pressing base. The rivets pass through the corresponding mounting holes and are riveted and fixed on the lower support base.

[0011] In order to make the cross-seam plate and the upper pressing base limit and cooperate with each other, an installation groove is opened at the root of the cross-seam plate, and the upper pressing base is embedded in the installation groove. Moreover, the upper surface of the upper pressing base is flush with the upper surface of the cross-seam plate.

[0012] The height-adjusting component can have various connection and fixing structures. Preferably, a embedded steel plate is fixed in the first installation groove opening, and the height-adjusting component is welded and fixed on the embedded steel plate.

[0013] In order to facilitate the expansion device to realize the functions of horizontal rotation and vertical rotation, a bolt mounting seat is welded and fixed on the embedded steel plate. Along the longitudinal bridge direction, the bolt mounting seat is located at the front side of the pressing support seat component. The cross-seam plate is connected to the bolt mounting seat through bolts. The bottom of the bolt extends into the bolt mounting seat, and an elastic body is provided between the bottom of the bolt and the embedded steel plate. A bolt mounting hole is opened on the cross-seam plate. The head of the bolt is arranged in the bolt mounting hole and is connected and fixed with a nut. A filling piece is arranged in the bolt mounting hole. The filling piece covers the head of the bolt and the nut and is flush with the upper surface of the cross-seam plate.

[0014] The fixing plate can have various installation structures. Preferably, a embedded steel plate is provided at the bottom of the second installation groove opening, and the fixing plate is fixed on the embedded steel plate through the support frame.

[0015] Compared with the prior art, the advantages of the present utility model are as follows: The lower support seat and the upper pressure seat of the bridge expansion joint device are connected by riveting with rivets, replacing the bolt fastening method, realizing bolt-free installation. There are no bolt holes on the plate surface, reducing the noise generated by vehicle passage, eliminating the problem of bolt and nut loosening, improving the reliability of the expansion device. In addition, the lower support seat and the upper pressure seat are directly welded and fixed on the height adjustment component, making the installation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the expansion device according to an embodiment of the present utility model;

[0017] Figure 2 is Figure 1 a structural cross-sectional view of the expansion device shown;

[0018] Figure 3 is a schematic structural diagram of the cross-seam plate according to an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The present utility model will be further described in detail below in conjunction with the embodiments of the drawings.

[0020] As Figures 1 to 3 shown, the bridge expansion joint device of this embodiment includes a cross-seam plate 1 and a fixing plate 2 that cooperate with each other. The cross-seam plate 1 and the fixing plate 2 adopt comb-shaped plates that intersect and are spaced apart from each other. The cross-seam plate 1 is installed in the first installation notch 103 of the first beam body 101, and the fixing plate 2 is installed in the second installation notch 104 of the second beam body 102.

[0021] In the first installation notch 103, a lower support seat 3, an upper pressure seat 4, a rotating shaft 5, a height adjustment component 6, a support frame 8, a pre-embedded steel plate 10, and a collision prevention baffle 100 are installed. Among them, the lower support seat 3, the upper pressure seat 4, the height adjustment component 6, and the support frame 8 are all distributed at intervals along the transverse bridge direction. One set of lower support seat 3 and upper pressure seat 4 corresponds to at least two height adjustment components 6, and the support frame 8 corresponds to the height adjustment component 6 one by one. The pre-embedded steel plate 10 is fixed at the bottom of the first installation notch 103, and the height adjustment component 6 is welded and fixed on the pre-embedded steel plate 10. The support frame 8 is located below the lower support seat 3. The inner side surface of the height adjustment component 6 facing the cross-seam plate 1 is a vertical surface. The lower support seat 3, the upper pressure seat 4, and the support frame 8 are all welded and fixed on the vertical surface, and the collision prevention baffle 100 is welded and fixed on the outer side of the height adjustment component 6.

[0022] The rotating shaft 5 is arranged on the lower support base 3 and distributed along the transverse bridge direction. The upper pressing seat 4 is arranged above the lower support base 3 and presses tightly on the rotating shaft 5. The expansion joint device realizes the vertical rotation function through the rotating shaft 4. The upper pressing seat 4 and the lower support base 3 are fixedly connected by rivets 7. In this embodiment, the upper pressing seat 4 is a square block, and mounting holes 41 are opened at the four corners of the upper pressing seat 4. The rivets 7 pass through the corresponding mounting holes 41 and are riveted and fixed on the lower support base 3. In this way, the connection method of riveting is used to replace the bolt fastening method, realizing bolt-free installation. There are no bolt holes on the plate surface, reducing the noise generated by vehicle passage, eliminating the problem of bolt and nut loosening, and improving the reliability of the expansion device.

[0023] In this embodiment, both the height adjustment component 6 and the support frame 8 have weight-reducing holes, which reduce the weight while ensuring the strength.

[0024] In addition, an installation groove 11 is opened at the root of the joint-span plate 1. The upper pressing seat 4 is embedded in the installation groove 11, and the upper surface of the upper pressing seat 4 is flush with the upper surface of the joint-span plate 1, so that the flatness of the joint-span plate 1 and the bridge surface meets the standard requirements. Finally, welding and fastening are carried out, and the lower support base 3 and the upper pressing seat 4 are fastened from the root of the joint-span plate 1.

[0025] In this embodiment, a bolt mounting seat 91 is welded and fixed on the embedded steel plate 10. Along the longitudinal bridge direction, the bolt mounting seat 91 is located on the front side of the press support seat assembly. The joint-span plate 1 is connected to the bolt mounting seat 91 through bolts 92. The bottom of the bolt 92 extends into the bolt mounting seat 91, and an elastic body 93 is provided between the bottom of the bolt 92 and the embedded steel plate 10. Bolt mounting holes 12 are opened on the joint-span plate 1. The head of the bolt 92 is arranged in the bolt mounting holes 12 and connected and fixed with nuts 94. A filling member 95 is arranged in the bolt mounting holes 12. The filling member 95 covers the head of the bolt 92 and the nut 94 and is flush with the upper surface of the joint-span plate 1. The bolt mounting seat 91, the bolt 92, the elastic body 93 and the nut 94 constitute an elastic fastening assembly, and the elastic fastening assembly is fastened from the inner side of the joint-span plate 1. This elastic fastening assembly has certain horizontal rotation and vertical rotation functions. The elastic body 93 can be, but is not limited to, elastic materials such as high-elastic polyurethane, rubber, and springs. In addition, in order to increase the frictional resistance of vehicle passage, in this embodiment, anti-slip grooves 13 can be engraved on the surface of the joint-span plate 1.

[0026] An embedded steel plate 10 is provided at the bottom of the second installation notch 104. The specific installation method of the fixed plate 2 can refer to the prior art and will not be described in detail here.

[0027] The bridge expansion joint device of this embodiment is a concrete-free structure. The anti-collision baffle 100 can be made of steel plate and can be adjusted to the corresponding height according to the actual installation size requirements. In addition, the expansion device of this embodiment also meets the concrete structure.

[0028] When the bridge generates a horizontal lateral displacement, elastic deformation is generated through the front row of elastic fastening components and the gaps between the comb teeth, thereby realizing lateral rotation; when the bridge generates vertical movement, rotation between the lower support seat 3, the upper pressing seat 4 and the rotating shaft 5 realizes the vertical rotation function of the expansion device.

[0029] In addition to lateral displacement, the bridge expansion joint device of this embodiment can also meet the functions of realizing horizontal rotation and vertical rotation. There are no bolt holes on the plate surface, realizing boltless installation, reducing the noise generated by vehicle passage, eliminating the problem of bolt and nut loosening, and playing an anti-dropping function. During installation, according to the depth of the notch, the height of the height adjustment component 6 is adjusted to adjust the flatness of the expansion device and the bridge road surface, and it is directly welded to the embedded steel plate 10, reducing intermediate links. Thus, the rapid installation of the expansion device is realized.

Claims

1. A bridge expansion joint device, comprising a joint-span plate (1) and a fixed plate (2) which cooperate with each other. The joint-span plate (1) is installed in a first installation notch (103) of a first beam body (101), and the fixed plate (2) is installed in a second installation notch (104) of a second beam body (102), and is characterized in that: A lower support base (3), an upper pressing base (4), a rotating shaft (5) and a height adjusting assembly (6) are provided in the first mounting notch (103). The height adjusting assembly (6) is fixed in the first mounting notch (103). The lower support base (3) and the upper pressing base (4) are both fixed on the height adjusting assembly (6). The rotating shaft (5) is arranged on the lower support base (3) and distributed along the transverse bridge direction. The upper pressing base (4) is arranged above the lower support base (3) and presses the rotating shaft (5). The upper pressing base (4) and the lower support base (3) are connected and fixed by rivets (7).

2. The bridge expansion joint device according to claim 1, characterized in that: A support frame (8) is provided below the lower support base (3). The support frame (8) is welded and fixed on the height adjusting assembly (6).

3. The bridge expansion joint device according to claim 2, characterized in that: The support frame (8) and / or the height adjusting assembly (6) has a lightening hole.

4. The bridge expansion joint device according to claim 2, wherein: The inner side surface of the height adjusting assembly (6) facing the crack-crossing plate (1) is a vertical surface. The lower support base (3), the upper pressing base (4) and the support frame (8) are all welded and fixed on the vertical surface.

5. The bridge expansion joint device according to claim 4, characterized in that: An anti-collision baffle (100) is welded and fixed on the outer side surface of the height adjusting assembly (6).

6. The bridge expansion joint device according to claim 2, wherein: The lower support base (3), the upper pressing base (4), the height adjusting assembly (6) and the support frame (8) are all distributed at intervals along the transverse bridge direction. One set of the lower support base (3) and the upper pressing base (4) corresponds to at least two height adjusting assemblies (6), and the support frame (8) corresponds to the height adjusting assembly (6) one by one.

7. The bridge expansion joint device according to claim 1, characterized in that: The upper pressing base (4) is a square block. Mounting holes (41) are opened at four corners of the upper pressing base (4). The rivets (7) pass through the corresponding mounting holes (41) and are riveted and fixed on the lower support base (3).

8. The bridge expansion joint device according to claim 1, characterized in that: An installation groove (11) is opened at the root of the crack-crossing plate (1). The upper pressing base (4) is embedded in the installation groove (11), and the upper surface of the upper pressing base (4) is flush with the upper surface of the crack-crossing plate (1).

9. The bridge expansion joint device according to claim 1, characterized in that: A buried steel plate (10) is fixed in the first mounting notch (103). The height adjusting assembly (6) is welded and fixed on the buried steel plate (10).

10. The bridge expansion joint device according to claim 9, characterized in that: A bolt mounting seat (91) is welded and fixed on the buried steel plate (10). Along the longitudinal bridge direction, the bolt mounting seat (91) is located at the front side of the pressing support base assembly. The crack-crossing plate (1) is connected to the bolt mounting seat (91) by bolts (92). The bottom of the bolt (92) extends into the bolt mounting seat (91), and an elastic body (93) is provided between the bottom of the bolt (92) and the buried steel plate (10). Bolt mounting holes (12) are opened on the crack-crossing plate (1). The head of the bolt (92) is arranged in the bolt mounting holes (12) and connected and fixed by nuts (94). A filling member (95) is provided in the bolt mounting holes (12). The filling member (95) covers the head of the bolt (92) and the nut (94) and is flush with the upper surface of the crack-crossing plate (1).

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