Bridge support with installation precision easy to control

Abstract

The utility model belongs to a bridge support, and particularly relates to a bridge support easy to control installation accuracy. Comprising supports which can adapt to deflection deformation of a beam body and have a rotating function, and further comprises a strip-shaped bottom plate and an upper seat plate assembly which is arranged above the bottom plate and used for being connected with the beam body, and at least two supports are evenly distributed in a cavity formed by the bottom plate and the upper seat plate assembly and stably support the upper seat plate assembly. The lower portion of the support and an inner cavity of the bottom plate are of a spigot positioning or integrated structure, the upper portion of the support is in running fit with the bottom of the support or the bottom plate, and the upper seat plate assembly is pressed on the top face of the upper portion of the support through a plane sliding pair. According to the utility model, the problems in the prior art that the positions of a plurality of supports on the same pier are difficult to align after being installed for multiple times, the coaxiality is difficult to control and the rotation of a bridge is limited are effectively solved, and the utility model has the advantages that the coaxiality is easy to control, the bearing capacity of the bridge can be improved by additionally arranging the middle seat plate, the field installation process is saved and the like.

Description

Technical Field

[0001] This utility model pertains to bridge bearings, and specifically refers to a bridge bearing that is easy to control in terms of installation accuracy. Background Technology

[0002] In bridge structures, bearings are crucial components connecting the superstructure and substructure. They reliably transfer the reaction forces and deformations of the superstructure to the substructure, directly impacting the bridge's safety and lifespan. Over time, existing bridge bearings are affected by environmental factors, aging and damaging them, leading to functional deficiencies and disrupting normal traffic operations. Timely replacement is essential, especially for railways, a vital artery of national development, where bearing replacement is critical for ensuring railway safety and smooth operation. Most railway bridges have two transverse bearings installed at the bottom of the beam ends. Since railway bearing replacement involves modifying existing lines, it typically requires work in busy areas with complex construction environments and limited space, resulting in lengthy installation times. Furthermore, the high precision required for bridge installation, the difficulty in aligning multiple bearings on the same pier, and the challenge in controlling coaxiality restrict bridge rotation.

[0003] When a heavy load passes over a bridge, the load causes the beam to deflect. Due to this deflection, the top plate of the bridge bearing will slope longitudinally, requiring the bearing to rotate vertically to accommodate the slope and release some of the internal forces. Generally, railway bridges have two bearings at each beam end, and the two corner bearings on the same pier should be on the same axis. All bearing axes on the same beam should be parallel to ensure flexible rotation during bridge deflection. However, during long-term operation, the concrete of the bridge beam will creep, causing misalignment or angles between the bearings at the bottom, resulting in inflexible synchronous rotation. Furthermore, limited space during replacement makes installation and positioning of the new bearing difficult, and angles may form between the rotation axes of adjacent bearings. All these factors hinder the bearings from adapting to bridge deflection and prevent effective release of internal forces, ultimately accelerating beam damage. Therefore, there is an urgent need to develop a superior bearing to solve these problems. The applicant has not found any patent documents identical or similar to this utility model in domestic patent databases. Summary of the Invention

[0004] The purpose of this utility model is to provide a bridge bearing that is easy to control in terms of installation accuracy, which can effectively achieve rapid installation of the bearing, ensure the installation accuracy and functionality of the bearing, and provide stable technical support for the normal use of bridges.

[0005] The overall technical concept of this utility model is:

[0006] Bridge bearings with easily controllable installation accuracy include bearings that can adapt to beam deflection and deformation and have rotation function, and also include a strip-shaped base plate, an upper bearing plate assembly disposed on the base plate and used for connection with the beam, at least two bearings are evenly distributed in the cavity formed by the base plate and the upper bearing plate assembly and provide stable support for the upper bearing plate assembly, the lower part of the bearing and the inner cavity of the base plate are positioned by a stop or an integrated structure, the upper part of the bearing and its bottom or base plate are rotated together, and the upper bearing plate assembly is pressed on the top surface of the upper part of the bearing through a planar sliding pair.

[0007] Other specific technical solutions of this utility model include:

[0008] The main reason for using a rotational fit between the upper part of the bearing and its bottom or base plate is that the top plate of the bridge bearing will have a slope in the longitudinal direction due to the deflection deformation of the beam. The bearing needs to rotate at a certain vertical angle to match the slope in order to release some of the internal force of the beam. The preferred technical solution is to use a cylindrical bearing with an arc-shaped rotation surface or a spherical bearing with a spherical rotation surface.

[0009] One optimized structural design is that the support is a cylindrical support with an arc-shaped rotating surface, including a cylindrical base that is positioned with a stop or integrated with the inner cavity of the base plate. The cylindrical middle support plate is in arc-shaped rotational engagement with the adjacent cylindrical base or base plate through an arc-shaped sliding pair. The upper support plate assembly is pressed onto the top of the cylindrical middle support plate through a planar sliding pair.

[0010] Furthermore, the arc-shaped sliding pair includes a stainless steel plate and a sliding plate on the cylindrical surface, which are disposed at the junction of the cylindrical middle seat plate and the cylindrical base or bottom plate.

[0011] Another optimized structural design is that the support is a spherical support with a spherical rotating surface, including a spherical base that is positioned with a stop or integrated with the inner cavity of the base plate, a spherical middle support plate that is spherically rotated with the adjacent spherical base or base plate through a spherical sliding pair, and an upper support plate assembly that is pressed onto the top of the spherical middle support plate through a planar sliding pair.

[0012] Furthermore, the spherical sliding pair includes a spherical stainless steel plate and a spherical sliding plate disposed at the junction of the spherical middle seat plate and the spherical base or bottom plate.

[0013] To facilitate the connection between the support and the beam, a preferred technical solution is to provide connecting plates on both sides of the upper support plate assembly for connection with the beam.

[0014] The structural design of this utility model can be used for bidirectional supports, unidirectional supports, and fixed supports. Unidirectional or fixed supports are mostly used in railway bridges. To facilitate the better application of this utility model to unidirectional or fixed supports, the preferred technical implementation means is that a guide member or limiting member is provided between the upper support plate assembly and the bottom plate or the lower outer edge of the support.

[0015] Furthermore, the guide member is located at the junction of the upper seat plate assembly and the lower outer edge of the base plate or support, and the guide member is a guide plate that prevents the upper seat plate assembly from shifting in the transverse direction of the bridge.

[0016] Furthermore, the limiting component is located at the junction of the upper seat plate assembly and the lower outer edge of the base plate or support. The limiting component is a limiting plate or limiting ring that prevents the upper seat plate assembly from displacing along the transverse and longitudinal directions of the bridge.

[0017] The technological advancements achieved by this utility model are as follows:

[0018] 1. Compared with existing bearings, this utility model has the following advantages: First, it can achieve normal displacement and rotation, and the same bearing uses at least two center bearing plates symmetrically arranged in the transverse direction of the bridge, making it easier to control coaxiality during on-site installation; second, it can improve the load-bearing capacity of the bridge by adding center bearing plates; third, it saves on-site installation procedures. Compared with the existing process of aligning multiple bearings on the same pier, this utility model can complete the installation of the bearings on the same pier in one go during construction, saving time and effort.

[0019] 2. The connecting plates are installed on both sides of the transverse bridge direction of the support with bolts, anchoring the upper support plate to the beam body. At the same time, the anchoring holes of the lower support plate are set on the outside of the beam body cross section. These measures make the installation of existing line renovation projects convenient and quick, and can restore traffic as soon as possible. Attached Figure Description

[0020] The accompanying drawings of this utility model are as follows:

[0021] Figure 1 This is a structural schematic diagram of the double-column support for the base assembly type of this utility model.

[0022] Figure 2 yes Figure 1 AA view.

[0023] Figure 3 This is a structural schematic diagram of the base assembly type unidirectional movable double-column support of this utility model.

[0024] Figure 4 yes Figure 3 BB view.

[0025] Figure 5 This is a structural schematic diagram of the double spherical support for the base assembly type of this utility model.

[0026] Figure 6 yes Figure 5 The CC view.

[0027] Figure 7This is a structural schematic diagram of the base assembly type unidirectional movable double spherical support of this utility model.

[0028] Figure 8 yes Figure 7 DD view.

[0029] Figure 9 This is a structural schematic diagram of the multi-cylinder support for the integral fixed type of base of this utility model.

[0030] Figure 10 yes Figure 9 EE view.

[0031] Figure 11 This is a structural schematic diagram of the integral unidirectional movable multi-cylinder support for the base of this utility model.

[0032] Figure 12 yes Figure 11 FF view.

[0033] The reference numerals in the attached figures are as follows:

[0034] 1. Base plate; 2. Upper seat plate assembly; 3. Connecting plate; 4. Flat sliding plate; 5. Cylindrical center seat plate; 6. Cylindrical stainless steel plate; 7. Limiting plate; 8. Cylindrical base; 9. Cylindrical sliding plate; 10. Guide plate; 11. Spherical center seat plate; 12. Spherical stainless steel plate; 13. Spherical base; 14. Spherical sliding plate; 15. Limiting ring. Detailed Implementation

[0035] The embodiments of this utility model are further described below with reference to the accompanying drawings, but this is not intended to limit the utility model. The protection scope of this utility model is determined by the contents of the claims. Any equivalent technical means substitutions made based on the description do not depart from the protection scope of this utility model. In this utility model, "above," "upper part," "bottom," "top," "both sides," and "lower part" are descriptions based on the orientation in the accompanying drawings and should not be construed as limiting the utility model.

[0036] Example 1

[0037] This embodiment describes a structure for a base-mounted fixed double-column support, and its overall structure is as follows: Figure 1 , 2 As shown, Figure 1 This is a structural diagram showing the arrangement of supports along the transverse direction of the bridge. Figure 2This is a structural diagram showing the bearings arranged along the longitudinal direction of the bridge. It includes bearings that can adapt to the deflection and deformation of the beam and have rotational function; the bearings are cylindrical bearings with an arc-shaped rotation surface. It also includes a strip-shaped base plate 1 and an upper bearing plate assembly 2 positioned above it for connection with the beam. The two bearings are evenly distributed at the left and right ends of the cavity formed by the base plate 1 and the upper bearing plate assembly 2, providing stable support for the upper bearing plate assembly 2. The lower part of the bearing is positioned within the cavity of the base plate 1 using a stop, and the upper part of the bearing is rotatedly fitted to its bottom. The upper bearing plate assembly 2 is pressed against the top surface of the upper part of the bearing via a planar sliding pair.

[0038] The support is a cylindrical support with an arc-shaped rotating surface, including a cylindrical base 8 that is positioned with the inner cavity of the base plate 1 by a stop. The cylindrical middle support plate 5 is in arc-shaped rotational engagement with the adjacent cylindrical base 8 through an arc-shaped sliding pair. The upper support plate assembly 2 is pressed onto the top of the cylindrical middle support plate 5 through a planar sliding pair.

[0039] The arc-shaped sliding pair includes a cylindrical stainless steel plate 6 and a cylindrical sliding plate 9 disposed at the junction of the cylindrical middle seat plate 5 and the cylindrical base 8.

[0040] The upper seat plate assembly 2 has connecting plates 3 on both sides for connecting with the beam.

[0041] The limiting component is located at the junction of the upper seat plate assembly 2 and the bottom plate 1. The limiting component is a limiting plate 7 that prevents the upper seat plate assembly 2 from displacing along the transverse and longitudinal directions of the bridge.

[0042] Example 2

[0043] This embodiment describes a structure for a base-assembled, unidirectional, movable, double-column support. Its overall structure is as follows: Figure 3 , 4 As shown, Figure 3 This is a structural diagram showing the arrangement of supports along the transverse direction of the bridge. Figure 4 This is a structural diagram showing the bearings arranged along the longitudinal direction of the bridge. It includes bearings that can adapt to the deflection and deformation of the beam and have rotational function; the bearings are cylindrical bearings with an arc-shaped rotation surface. It also includes a strip-shaped base plate 1 and an upper bearing plate assembly 2 positioned above it for connection with the beam. The two bearings are evenly distributed at the left and right ends of the cavity formed by the base plate 1 and the upper bearing plate assembly 2, providing stable support for the upper bearing plate assembly 2. The lower part of the bearing is positioned within the cavity of the base plate 1 using a stop, and the upper part of the bearing is rotatedly fitted to its bottom. The upper bearing plate assembly 2 is pressed against the top surface of the upper part of the bearing via a planar sliding pair.

[0044] The support is a cylindrical support with an arc-shaped rotating surface, including a cylindrical base 8 that is positioned with the inner cavity of the base plate 1 by a stop. The cylindrical middle support plate 5 is in arc-shaped rotational engagement with the adjacent cylindrical base 8 through an arc-shaped sliding pair. The upper support plate assembly 2 is pressed onto the top of the cylindrical middle support plate 5 through a planar sliding pair.

[0045] The arc-shaped sliding pair includes a cylindrical stainless steel plate 6 and a cylindrical sliding plate 9 disposed at the junction of the cylindrical middle seat plate 5 and the cylindrical base 8.

[0046] The upper seat plate assembly 2 has connecting plates 3 on both sides for connecting with the beam.

[0047] The guide member is located at the junction of the upper seat plate assembly 2 and the bottom plate 1. The guide member is a guide plate 10 that prevents the upper seat plate assembly 2 from shifting along the transverse bridge direction.

[0048] Example 3

[0049] This embodiment describes a structure for a base-assembled fixed type double spherical support, and its overall structure is as follows: Figure 5 , 6 As shown, Figure 5 This is a structural diagram showing the arrangement of supports along the transverse direction of the bridge. Figure 6 This is a structural diagram showing the bearings arranged along the longitudinal direction of the bridge. It includes bearings that can adapt to the deflection and deformation of the beam and have rotational function, as well as a strip-shaped base plate 1 and an upper bearing plate assembly 2 positioned above it for connection with the beam. The two bearings are evenly distributed within the cavity formed by the base plate 1 and the upper bearing plate assembly 2, providing stable support for the upper bearing plate assembly 2. The lower part of the bearing is positioned within the cavity of the base plate 1 using a stop, and the upper part of the bearing is rotatedly fitted to its bottom. The upper bearing plate assembly 2 is pressed against the top surface of the upper part of the bearing via a planar sliding pair.

[0050] The support selected is a spherical support with a spherical rotating surface.

[0051] The support is a spherical support with a spherical rotating surface, including a spherical base 13 that is positioned with the inner cavity of the base plate 1 by a stop. The spherical middle base plate 11 is spherically rotated with the adjacent spherical base 13 through a spherical sliding pair. The upper base plate assembly 2 is pressed onto the top of the spherical middle base plate 11 through a planar sliding pair.

[0052] The spherical sliding pair includes a spherical stainless steel plate 12 and a spherical sliding plate 14 disposed at the junction of the spherical middle seat plate 11 and the spherical base 13.

[0053] The upper seat plate assembly 2 has connecting plates 3 on both sides for connecting with the beam.

[0054] The limiting component is located at the junction of the upper seat plate assembly 2 and the bottom plate 1. The limiting component is a limiting ring 15 that prevents the upper seat plate assembly 2 from displacing along the transverse and longitudinal directions of the bridge.

[0055] Example 4

[0056] This embodiment describes the structure of a base-assembled unidirectional movable double spherical support, and its overall structure is as follows: Figure 7 , 8 As shown, Figure 7This is a structural diagram showing the arrangement of supports along the transverse direction of the bridge. Figure 8 This is a structural schematic diagram of the supports arranged along the longitudinal direction of the bridge. It includes supports that can adapt to the deflection and deformation of the beam and have rotational function; the supports are spherical supports with a spherical rotation surface. It also includes a strip-shaped base plate 1 and an upper support plate assembly 2 mounted on top of it for connection with the beam. The two supports are evenly distributed at the left and right ends of the cavity formed by the base plate 1 and the upper support plate assembly 2, providing stable support for the upper support plate assembly 2. The lower part of the support is positioned within the cavity of the base plate 1 using a stop joint, and the upper part of the support is rotatedly fitted to its bottom. The upper support plate assembly 2 is pressed against the top surface of the upper part of the support via a planar sliding pair.

[0057] The support is a spherical support with a spherical rotating surface, including a spherical base 13 that is positioned with the inner cavity of the base plate 1 by a stop. The spherical middle base plate 11 is spherically rotated with the adjacent spherical base 13 through a spherical sliding pair. The upper base plate assembly 2 is pressed onto the top of the spherical middle base plate 11 through a planar sliding pair.

[0058] The spherical sliding pair includes a spherical stainless steel plate 12 and a spherical sliding plate 14 disposed at the junction of the spherical middle seat plate 11 and the spherical base 13.

[0059] The upper seat plate assembly 2 has connecting plates 3 on both sides for connecting with the beam.

[0060] The guide member is located at the junction of the upper seat plate assembly 2 and the bottom plate 1. The guide member is a guide plate 10 that prevents the upper seat plate assembly 2 from shifting along the transverse bridge direction.

[0061] Example 5

[0062] This embodiment describes a structure for a fixed, multi-cylinder support with an integral base. Its overall structure is as follows: Figure 9 , 10 As shown, Figure 9 This is a structural diagram showing the arrangement of supports along the transverse direction of the bridge. Figure 10 This is a schematic diagram of the structure of the supports arranged along the longitudinal direction of the bridge. It includes supports that can adapt to the deflection and deformation of the beam and have rotational function, as well as a strip-shaped base plate 1 and an upper support plate assembly 2 set on top of it for connection with the beam. The three supports are evenly distributed at the left and right ends and the center of the cavity formed by the base plate 1 and the upper support plate assembly 2, and provide stable support for the upper support plate assembly 2. The lower part of the support and the inner cavity of the base plate 1 adopt an integrated structure, and the upper part of the support and the base plate 1 adopt a rotational fit. The upper support plate assembly 2 is pressed on the top surface of the upper part of the support through a planar sliding pair.

[0063] The support is a cylindrical support with an arc-shaped rotating surface, including a base with an integrated structure with the inner cavity of the base plate 1, a cylindrical middle support plate 5 with the adjacent inner cavity of the base plate 1 through an arc-shaped sliding pair, and an upper support plate assembly 2 pressed on the top of the cylindrical middle support plate 5 through a planar sliding pair.

[0064] The arc-shaped sliding pair includes a cylindrical stainless steel plate 6 and a cylindrical sliding plate 9 disposed at the junction of the cylindrical middle seat plate 5 and the inner cavity of the bottom plate 1.

[0065] The upper seat plate assembly 2 has connecting plates 3 on both sides for connecting with the beam.

[0066] A limiting component is provided between the upper seat plate assembly 2 and the base plate 1.

[0067] The limiting component is located at the junction of the upper seat plate assembly 2 and the bottom plate 1. The limiting component is a limiting plate 7 that prevents the upper seat plate assembly 2 from displacing along the transverse and longitudinal directions of the bridge.

[0068] Example 6

[0069] This embodiment describes a structure for a single-axis movable multi-cylinder support with an integral base. Its overall structure is as follows: Figure 11 , 12 As shown, Figure 11 This is a structural diagram showing the arrangement of supports along the transverse direction of the bridge. Figure 12 This is a schematic diagram of the structure of the supports arranged along the longitudinal direction of the bridge. It includes supports that can adapt to the deflection and deformation of the beam and have rotational function, as well as a strip-shaped base plate 1 and an upper support plate assembly 2 set on top of it for connection with the beam. The three supports are evenly distributed at the left and right ends and the center of the cavity formed by the base plate 1 and the upper support plate assembly 2, and provide stable support for the upper support plate assembly 2. The lower part of the support and the inner cavity of the base plate 1 adopt an integrated structure, and the upper part of the support and the base plate 1 adopt a rotational fit. The upper support plate assembly 2 is pressed on the top surface of the upper part of the support through a planar sliding pair.

[0070] The support is a cylindrical support with an arc-shaped rotating surface, including a base with an integrated structure with the inner cavity of the base plate 1. The cylindrical middle support plate 5 is in arc-shaped rotational engagement with the adjacent base plate 1 through an arc-shaped sliding pair. The upper support plate assembly 2 is pressed onto the top of the cylindrical middle support plate 5 through a planar sliding pair.

[0071] The arc-shaped sliding pair includes a cylindrical stainless steel plate 6 and a cylindrical sliding plate 9 disposed at the junction of the cylindrical seat plate 5 and the base plate 1.

[0072] The upper seat plate assembly 2 has connecting plates 3 on both sides for connecting with the beam.

[0073] The guide member is located at the junction of the upper seat plate assembly 2 and the bottom plate 1. The guide member is a guide plate 10 that prevents the upper seat plate assembly 2 from shifting along the transverse bridge direction.

Claims

1. A bridge bearing with easily controllable installation accuracy, including a bearing that can adapt to beam deflection and deformation and has a rotation function, characterized in that... It also includes a strip-shaped base plate (1), an upper seat plate assembly (2) set above it and used for connection with the beam, at least two supports are evenly distributed in the cavity formed by the base plate (1) and the upper seat plate assembly (2) and provide stable support for the upper seat plate assembly (2), the lower part of the support and the inner cavity of the base plate (1) are positioned by a stop or an integrated structure, the upper part of the support and its bottom or the base plate (1) are rotated together, and the upper seat plate assembly (2) is pressed on the top surface of the upper part of the support through a planar sliding pair.

2. The bridge bearing with easily controllable installation accuracy according to claim 1, characterized in that... The supports are selected as cylindrical supports with an arc-shaped rotating surface or spherical supports with a spherical rotating surface.

3. The bridge bearing with easily controllable installation accuracy according to claim 2, characterized in that... The support is a cylindrical support with an arc-shaped rotating surface, including a cylindrical base (8) with a stop positioning or an integrated structure with the inner cavity of the base plate (1), a cylindrical middle base plate (5) with an arc-shaped sliding pair and an adjacent cylindrical base (8) or base plate (1) with an arc-shaped rotating fit, and an upper base plate assembly (2) pressed on the top of the cylindrical middle base plate (5) with a planar sliding pair.

4. The bridge bearing with easily controllable installation accuracy according to claim 3, characterized in that... The arc-shaped sliding pair includes a cylindrical stainless steel plate (6) and a cylindrical sliding plate (9) disposed at the junction of the cylindrical middle seat plate (5) and the cylindrical base (8) or the bottom plate (1).

5. The bridge bearing with easily controllable installation accuracy according to claim 2, characterized in that... The support is selected as a spherical support with a spherical rotating surface, including a spherical base (13) with a stop positioning or an integrated structure with the inner cavity of the base plate (1), a spherical middle base plate (11) with the adjacent spherical base (13) or base plate (1) through a spherical sliding pair with spherical rotational engagement, and an upper base plate assembly (2) pressed on the top of the spherical middle base plate (11) through a planar sliding pair.

6. The bridge bearing with easily controllable installation accuracy according to claim 5, characterized in that... The spherical sliding pair includes a spherical stainless steel plate (12) and a spherical sliding plate (14) disposed at the junction of the spherical middle seat plate (11) and the spherical base (13) or the bottom plate (1).

7. The bridge bearing with easily controllable installation accuracy according to claim 1, characterized in that... The upper seat plate assembly (2) has connecting plates (3) on both sides for connecting with the beam.

8. The bridge bearing with easily controllable installation accuracy according to any one of claims 1 to 7, characterized in that... A guide member or limiting member is provided between the upper seat plate assembly (2) and the bottom plate (1) or the lower outer edge of the support.

9. The bridge bearing with easily controllable installation accuracy according to claim 8, characterized in that... The guide member is located at the junction of the upper seat plate assembly (2) and the bottom plate (1) or the lower outer edge of the support. The guide member is a guide plate (10) that prevents the upper seat plate assembly (2) from displacing in the transverse direction.

10. The bridge bearing with easily controllable installation accuracy according to claim 8, characterized in that... The limiting component is located at the junction of the upper seat plate assembly (2) and the bottom plate (1) or the lower outer edge of the support. The limiting component is a limiting plate (7) or a limiting ring (15) to prevent the upper seat plate assembly (2) from displacing in the transverse and longitudinal directions of the bridge.

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