Bridge displacement device

Abstract

A bridge displacement device comprises a first comb plate and a second comb plate which are matched with each other in a telescopic mode, the first comb plate is installed on a first beam body through a first supporting component, the second comb plate is installed on a second beam body through a second supporting component, and a rotating shaft is fixed to the bottom of the outer end of the first comb plate. The first supporting component comprises a shaft seat anchor plate fixed to the first beam body, a mounting shaft hole is formed in the shaft seat anchor plate, and the rotating shaft is mounted in the mounting shaft hole. According to the bridge displacement device, the mounting shaft hole for mounting the rotating shaft is formed in the shaft seat anchor plate, the cost of using an upper pressing seat and a lower pressing seat is reduced through the rotating shaft and the shaft seat anchor plate, meanwhile, the reliability of a telescopic device is improved, the bridge displacement device can be mounted by adopting a concrete-free structure or a concrete structure, and during mounting, according to the depth of a notch, the mounting efficiency is improved. The flatness of the telescopic device and the bridge pavement is adjusted by increasing the height of the assembly, the telescopic device is directly welded to the notch steel plate, intermediate links are reduced, and therefore rapid installation of the telescopic device is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge expansion joints, in particular to a bridge displacement device. Background Art

[0002] During the operation of bridge engineering, creep and wind force caused by vehicle load, bridge material and temperature will cause deformation such as contraction and elongation of bridge. Bridge displacement device is one of the important functional components of bridge engineering to meet the requirements of bridge deformation. Bridge displacement devices are usually installed between bridges and between bridges and abutments. In order to ensure safe and smooth driving of vehicles, the displacement device installed on the bridge must meet the various changes of the beam body. Although the conventional comb plate expansion joint can meet the basic requirements of the expansion and contraction of the beam body, its on-site adjustment and installation process are relatively complicated and difficult. In order to meet the rotation angle of the bridge in the vertical direction and the horizontal direction, a rotating shaft is installed below the span plate, and the span plate can rotate longitudinally around the rotating shaft, such as the "A bridge expansion joint device" disclosed in the Chinese invention patent with patent number 201811364767.7 (authorization announcement number CN 109594469B), the bridge expansion joint device includes fixed comb plates and span plates that are staggered, the outer end of the span plate is arranged on the support seat, and the lower pressure plate assembly and the fixed bottom plate are arranged in sequence from top to bottom below the support seat, the lower pressure plate assembly is movably connected to the span plate, and the lower pressure plate assembly is movably connected to the fixed bottom plate through a connecting column, and the lower pressure plate assembly can rotate horizontally relative to the fixed bottom plate around the connecting column. The support seat includes a support plate, a rotating shaft and a lower support seat, the support plate is placed above the lower support seat and is fixed by a fourth connecting bolt, the rotating shaft is arranged between the support plate and the lower support seat along the bridge transverse direction, and the end of the span plate away from the fixed comb plate is fixed on the rotating shaft. The rotating shaft of the bridge expansion joint device is installed between the support pressure plate and the lower support seat, which is not only costly but also needs to be further improved in terms of reliability. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a bridge displacement device with low cost and reliable use in view of the above-mentioned existing technical status.

[0004] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: a bridge displacement device, including a first comb plate and a second comb plate that are telescopically matched with each other, the first comb plate is installed on the first beam body through a first supporting member, and the second comb plate is installed on the second beam body through a second supporting member, characterized in that: a rotating shaft is fixed to the bottom of the outer end of the first comb plate, the first supporting member includes an axle seat anchor plate fixed to the first beam body, a mounting shaft hole is opened on the axle seat anchor plate, and the rotating shaft is installed in the mounting shaft hole.

[0005] The rotating shaft can have a variety of installation structures. Preferably, the rotating shaft has a round shaft and a flange portion extending upward from the top of the round shaft. The installation shaft hole is opened at the top of the shaft seat anchor plate. The round shaft is rotatably connected in the installation shaft hole, and the flange portion is welded and fixed to the bottom of the first comb plate. In this arrangement, the round shaft is mainly responsible for the rotation function, and the flange portion mainly plays the role of welding and raising the round shaft, so that the round shaft has enough rotation space in the shaft seat anchor plate, and also provides the shaft seat anchor plate with sufficient size to clamp the shaft, making the rotation connection more reliable. In addition, the rotating shaft adopts integrated molding to ensure that the first comb plate rotating shaft part is bolt-free, which improves the reliability of product use, while reducing the number of parts and facilitating installation.

[0006] Preferably, the end of the first beam body has a first mounting notch, the end of the second beam body has a second mounting notch, the first supporting member is installed in the first mounting notch, and the second supporting member is installed in the second mounting notch.

[0007] As a preferred solution, a pre-buried steel bar fixed to the first beam body is installed in the first installation slot, and the axle seat anchor plate is connected and fixed to the pre-buried steel bar. In this way, the axle seat anchor plate can be fixed to the first beam body, and further, the pre-buried steel bar is fixed to the first beam body by shear nails.

[0008] In order to further improve the installation firmness of the axle seat anchor plate, the axle seat anchor plate is also connected and fixed to the embedded steel bars by connecting anchor bars.

[0009] In order to further fix the first comb plate, a connecting bolt is provided on the inner side of the shaft seat anchor plate, and the first comb plate is connected and fixed to the embedded steel bar through the connecting bolt. In this way, the outer side of the shaft seat anchor plate embraces the rotating shaft through the installation shaft hole, and the cross-seam plate is fastened from the rear end; the inner side is connected to the first comb plate through the connecting bolt, so that the first comb plate is anchored as a whole.

[0010] As another preferred solution, an embedded steel plate fixed to the first beam body is installed in the first installation notch, a first height adjustment component is fixed on the embedded steel plate, and the shaft seat anchor plate is fixed on the first height adjustment component. During installation, the flatness of the telescopic device and the bridge pavement can be adjusted according to the notch depth and the height of the first height adjustment component, and the telescopic device can be directly welded to the embedded steel plate to reduce intermediate links. This enables rapid installation of the telescopic device.

[0011] As another preferred solution, an embedded steel plate fixed to the first beam body is installed in the first installation notch, an adjustment plate is fixed to the embedded steel plate, and the shaft seat anchor plate is fixed to the adjustment plate. The adjustment plate can play a role in height adjustment welding, and the connection is performed through the adjustment plate when the notch depth is irregular.

[0012] In order to protect the telescopic device, an anti-collision baffle is installed on the outer side of the first height adjustment component.

[0013] In order to make the installation structure of the first comb plate more secure, connecting bolts are provided on the inner side of the shaft seat anchor plate, and the first comb plate is connected and fixed to the embedded steel plate by the connecting bolts.

[0014] The second comb plate can have a variety of installation structures. Preferably, embedded steel bars or embedded steel plates are installed in the second installation groove, the second supporting member is a second height adjustment component welded and fixed to the embedded steel bars or embedded steel plates, and a support plate is fixed to the bottom of the second comb plate, and the support plate is connected and fixed to the second height adjustment component.

[0015] As a preferred embodiment of any of the above schemes, the first comb plate is a cross-seam plate, the second comb plate is a fixed plate, a stainless steel component is provided at the bottom of the first comb plate, a stainless steel slide plate component is provided at the bottom of the second comb plate, and the stainless steel component is provided above the second beam body and against the stainless steel slide plate component.

[0016] Compared with the prior art, the utility model has the advantages that: a rotating shaft is fixed to the bottom of the outer end of the first comb plate of the bridge displacement device, and an installation shaft hole for the installation of the rotating shaft is opened on the shaft seat anchor plate. The cost of using the upper and lower pressure seats is reduced by the rotating shaft and the shaft seat anchor plate, and the reliability of the displacement device is improved. The installation of the bridge displacement device can adopt a non-concrete structure or a concrete structure, and has a wide adaptability. In addition, the rotating shaft adopts a flange shaft structure with a round shaft and a flange part, so that the round shaft has enough rotation space in the shaft seat anchor plate, and also provides the shaft seat anchor plate with sufficient size to clamp the shaft, making the rotation connection more reliable. In addition, the rotating shaft adopts integrated molding to ensure that the rotating shaft part of the first comb plate is bolt-free, thereby improving the reliability of product use, while reducing the number of parts and facilitating installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a bridge displacement device according to Embodiment 1 of the present utility model;

[0018] Figure 2 for Figure 1 A structural cross-sectional view of the bridge displacement device shown;

[0019] Figure 3 This is a structural schematic diagram of a bridge displacement device according to Embodiment 2 of the present utility model;

[0020] Figure 4 for Figure 3 A structural cross-sectional view of the bridge displacement device shown;

[0021] Figure 5 for Figure 3 Another structural cross-sectional view of the bridge displacement device shown;

[0022] Figure 6 This is a schematic structural diagram of a bridge displacement device according to Embodiment 3 of the present utility model. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0024] Embodiment 1:

[0025] like Figure 1 and Figure 2 As shown, the bridge displacement device of this embodiment includes a first comb plate 1 and a second comb plate 2 that are telescopically matched with each other. The first comb plate 1 is a cross-slot plate, and the second comb plate 2 is a fixed plate. The end of the first beam body 101 has a first installation notch, and the end of the second beam body 102 has a second installation notch. The first comb plate 1 is installed in the first installation groove through a first supporting member, and the second comb plate 2 is installed in the second installation groove through a second supporting member. Figure 2 The direction indicated by the middle arrow A is outward, and a rotating shaft 3 is fixed to the bottom of the outer end of the first comb plate 1, and the rotating shaft 3 is arranged to extend along the transverse bridge direction. The first supporting member includes an axle seat anchor plate 4 fixed to the first beam body 101, and a mounting shaft hole is opened on the axle seat anchor plate 4, and the rotating shaft 3 is installed in the mounting shaft hole. In this embodiment, the rotating shaft 3 is a flange shaft, that is, it has a round shaft 31 and a flange portion 32 extending upward from the top of the round shaft 31. The mounting shaft hole is opened at the top of the axle seat anchor plate 4, and the round shaft 31 is rotatably connected in the mounting shaft hole. The flange portion 32 is welded and fixed to the bottom of the first comb plate 1. The circular shaft 31 is mainly responsible for the rotation function, and the flange part 32 is mainly used for welding and raising the circular shaft 31, so that the circular shaft 31 has enough rotation space in the shaft seat anchor plate 4, and also provides the shaft seat anchor plate 4 with sufficient size to make a clamp for the shaft, and fasten the first comb plate 1 from the outer end, so that the rotation connection is more reliable. In addition, the rotating shaft 3 adopts an integrated molding structure to ensure that the rotating shaft part of the first comb plate 1 is free of bolts, which improves the reliability of product use, reduces the number of parts, and facilitates installation. During normal operation, the rotating shaft 3 rotates in the installation shaft hole of the shaft seat anchor plate 4, and the installation shaft hole will be worn. Therefore, the installation shaft hole is locally heat treated to improve its wear resistance. When the bridge rotates longitudinally, that is, vertically, the longitudinal rotation function of the telescopic device is realized by the rotation of the circular shaft 31 of the rotating shaft 3 in the shaft seat anchor plate 4.

[0026] In this embodiment, the first installation slot is provided with embedded steel bars 5 fixed to the first beam body 101, the axle seat anchor plate 4 is connected and fixed to the embedded steel bars 5, and the axle seat anchor plate 4 is also connected and fixed to the embedded steel bars 5 through connecting anchor bars 6. The connecting anchor bars 6 of this embodiment are U-shaped anchor bars, which can be reliably connected to the embedded steel bars 5 as a whole. The axle seat anchor plate 4 also plays the role of height adjustment components. By adjusting the relative height between the axle seat anchor plate 4 and the embedded steel bars 5, the flatness of the first comb plate 1 and the bridge pavement 17 meets the standard requirements. A connecting bolt 7 is provided on the inner side of the axle seat anchor plate 4. The first comb plate 1 is connected and fixed to the embedded steel bars 5 through the connecting bolt 7. The first comb plate 1 is tightened from the inner end, and the connecting bolt 7 cooperates with flange nuts, micro-elastic washers and other parts, and has a certain horizontal rotation angle and longitudinal rotation angle function. The embedded steel bar 5 is installed in the second installation groove. The second supporting member is a second height adjustment component 10 welded and fixed on the embedded steel bar 5. A supporting plate 11 is fixed on the bottom of the second comb plate 2. The supporting plate 11 is welded and fixed on the second height adjustment component 10.

[0027] In addition, a stainless steel component 12 is provided at the bottom of the first comb plate 1, and a stainless steel slide plate component 13 is provided at the bottom of the second comb plate 2, and the stainless steel component 12 is provided above the second beam body 102 and abuts against the stainless steel slide plate component 13. The surface of the first comb plate 1 can be engraved with anti-skid grooves to increase friction resistance and improve safety performance.

[0028] The installation steps of the bridge displacement device of this embodiment are as follows:

[0029] S1. Dig and clean the entire notch area where the telescopic device is installed, and measure the notch depth;

[0030] S2. According to the notch depth measured by S1, the height adjustment component of the second comb plate 2 of the telescopic device, i.e., the second height adjustment component 10 of this embodiment, is processed accordingly, and the second height adjustment component 10 and the connecting bolts 7 are welded to the corresponding embedded steel bars 5; thereafter, the welding slag and weld are cleaned. Keep the notch clean;

[0031] S3, install the second comb plate 2, adjust the flatness of the second comb plate 2 and the bridge deck through the slideway of the second height adjustment component 10, and then weld the second comb plate 2 with the second height adjustment component 10 through the support plate 11 to complete the installation of the second comb plate 2; insert the stainless steel slide plate component 13 into the lower part of the second comb plate, the support plate 11 supports the stainless steel slide plate component 13, pour concrete, vibrate and compact it, and then put the stainless steel component 12 in to complete the installation of the second comb plate component;

[0032] S4, install the first comb plate 1, first insert the rotating shaft 4 into the shaft seat anchor plate 4, and use steel bars to weld and position it after it is in place, adjust the flatness between the first comb plate 1 and the second comb plate 2, and after it meets the requirements, weld and fix the shaft seat anchor plate 4 and the embedded steel bars 5;

[0033] S5. Clean the weld and welding slag to ensure the groove is clean;

[0034] S6. Pour concrete 14 for the telescopic device and cure it, completing the installation of the telescopic device.

[0035] Embodiment 2:

[0036] like Figures 3 to 5 As shown, the bridge displacement device of this embodiment is installed with embedded steel plates 8 in the first installation slot and the second installation slot, and the embedded steel plates 8 are fixed to the first beam body 101 and the second beam body 102 through shear nails 15. The first height adjustment component 9 is fixed to the embedded steel plate 8 of the first beam body 101. The first height adjustment component 9 of this embodiment adopts a T-shaped steel plate, the shaft seat anchor plate 4 is fixed to the first height adjustment component 9, the outer end of the first comb plate 1 is rotatably connected to the shaft seat anchor plate 4 through the rotating shaft 3, and the inner end of the first comb plate 1 is connected and fixed to the embedded steel plate 8 through the connecting bolts 7. The second height adjustment component 10 is fixed to the embedded steel plate 8 of the second beam body 102, and the second comb plate 2 is welded and fixed to the second height adjustment component 10 through the support plate 11.

[0037] The installation steps of the bridge displacement device of this embodiment are as follows:

[0038] s1. Dig and clean the entire notch area where the telescopic device is installed, and measure the notch depth;

[0039] s2. According to the notch depth measured in s1, the first height adjustment component 9 and the second height adjustment component 10 of the telescopic device are processed accordingly, and the first height adjustment component 9, the second height adjustment component 10 and the connecting bolt 7 are welded to the corresponding embedded steel plate 8; then, the welding slag and weld are cleaned. Keep the notch clean;

[0040] s3. Install the second comb plate 2. Adjust the flatness of the second comb plate 2 and the bridge deck through the slideway of the second height adjustment component 10. Then weld the second height adjustment component 10 with the support plate 11 to complete the installation of the second comb plate 2. Insert the stainless steel slide plate component 13 into the lower part of the second comb plate 2. The support plate 11 supports the stainless steel slide plate component 13. Pour concrete 14. After vibrating and compacting, put the stainless steel component 12 in to complete the installation of the second comb plate component.

[0041] s4. Install the first comb plate 1, first insert the rotating shaft 3 into the shaft seat anchor plate 4, and use steel bars for electric welding to position it after it is in place. Adjust the flatness between the first comb plate 1 and the second comb plate 2. After meeting the requirements, weld the shaft seat anchor plate 4 and the first height adjustment component 9, i.e., the T-shaped steel plate, to fix them.

[0042] s5. Weld and fix the anti-collision baffle 16 on the outer side of the first height adjustment component 9, and make the upper surface of the anti-collision baffle 16 flush with the bridge road surface 17 (after the notch is cleaned);

[0043] s6. Clean the weld and welding slag to ensure the groove is clean.

[0044] s7. Pour concrete 14 for the telescopic device and allow it to cure, completing the installation of the telescopic device.

[0045] Embodiment three:

[0046] like Figure 6 As shown, compared with the second embodiment, the bridge displacement device of this embodiment omits the first height adjustment component 9, and adds an adjustment plate 18 between the shaft seat anchor plate 4 and the embedded steel plate 8. The adjustment plate 18 is usually an adjustment steel plate, which plays a role in height adjustment welding. When the depth of the notch is irregular, the connection is made through the adjustment plate 18. The rest of the structure of this embodiment is the same as that of the second embodiment, and will not be described in detail here.

[0047] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0048] The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this field, various modifications or improvements can be made to the present invention without departing from the principle of the present invention. For example, the telescopic device of the present invention can be applied to both non-concrete structures and concrete structures, which are all considered to be within the scope of protection of the present invention.

Claims

1. A bridge displacement device, comprising a first comb plate (1) and a second comb plate (2) that are telescopically matched with each other, wherein the first comb plate (1) is mounted on a first beam body (101) through a first supporting member, and the second comb plate (2) is mounted on a second beam body (102) through a second supporting member, characterized in that: A rotating shaft (3) is fixed to the bottom of the outer end of the first comb plate (1), and the rotating shaft (3) is arranged to extend along the transverse bridge direction. The first supporting member comprises an axle seat anchor plate (4) fixed to the first beam body (101), and a mounting shaft hole is opened on the axle seat anchor plate (4), and the rotating shaft (3) is installed in the mounting shaft hole.

2. The bridge displacement device according to claim 1, characterized in that: The rotating shaft (3) comprises a round shaft (31) and a flange portion (32) extending upward from the top of the round shaft (31); the mounting shaft hole is opened at the top of the shaft seat anchor plate (4); the round shaft (31) is rotatably connected in the mounting shaft hole; and the flange portion (32) is welded and fixed to the bottom of the first comb plate (1).

3. The bridge displacement device according to claim 1, characterized in that: The end of the first beam body (101) has a first installation slot, the end of the second beam body (102) has a second installation slot, the first supporting member is installed in the first installation slot, and the second supporting member is installed in the second installation slot.

4. The bridge displacement device according to claim 3, characterized in that: A pre-buried steel bar (5) fixed to the first beam body (101) is installed in the first installation notch, and the axle seat anchor plate (4) is connected and fixed to the pre-buried steel bar (5).

5. The bridge displacement device according to claim 4, characterized in that: The shaft seat anchor plate (4) is also connected and fixed to the embedded steel bars (5) via connecting anchor bars (6).

6. The bridge displacement device according to claim 4, characterized in that: A connecting bolt (7) is provided on the inner side of the shaft seat anchor plate (4), and the first comb plate (1) is connected and fixed to the embedded steel bar (5) via the connecting bolt (7).

7. The bridge displacement device according to claim 3, characterized in that: An embedded steel plate (8) fixed to the first beam body (101) is installed in the first installation slot, a first height adjustment component (9) is fixed on the embedded steel plate (8), and the shaft seat anchor plate (4) is fixed on the first height adjustment component (9).

8. The bridge displacement device according to claim 3, characterized in that: An embedded steel plate (8) fixed to the first beam body (101) is installed in the first installation notch, an adjustment plate (18) is fixed on the embedded steel plate (8), and the shaft seat anchor plate (4) is fixed on the adjustment plate (18).

9. The bridge displacement device according to any one of claims 4 to 8, characterized in that: An embedded steel bar (5) or an embedded steel plate (8) is installed in the second installation groove; the second supporting member is a second height adjustment component (10) welded and fixed to the embedded steel bar (5) or the embedded steel plate (8); a supporting plate (11) is fixed to the bottom of the second comb plate (2); and the supporting plate (11) is connected and fixed to the second height adjustment component (10).

10. The bridge displacement device according to claim 1, characterized in that: The first comb tooth plate (1) is a cross-seam plate, and the second comb tooth plate (2) is a fixed plate. A stainless steel component (12) is provided at the bottom of the first comb tooth plate (1), and a stainless steel slide plate component (13) is provided at the bottom of the second comb tooth plate (2). The stainless steel component (12) is arranged above the second beam body (102) and abuts against the stainless steel slide plate component (13).

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