Bridge rubber support

Abstract

The utility model discloses a bridge rubber support, which relates to the technical field of bridge engineering, and comprises a first mounting plate, a second mounting plate and a rubber support assembly, the first mounting plate and the second mounting plate are arranged in parallel, the rubber support assembly is positioned between the first mounting plate and the second mounting plate, and the rubber support assembly is arranged on the first mounting plate. The first mounting plate is clamped with the top end of the rubber support assembly and is in sliding fit with the top end of the rubber support assembly in the length direction of a bridge, and the second mounting plate is clamped with the bottom end of the rubber support assembly and is in sliding fit with the bottom end of the rubber support assembly in the width direction of the bridge. According to the bridge rubber support, the probability of rubber damage can be reduced when an earthquake disaster occurs.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge engineering, in particular to a bridge rubber bearing. Background Art

[0002] Bridge rubber bearings are made of multiple layers of rubber sheets and thin steel plates that are staggered, vulcanized and bonded. They have sufficient vertical rigidity to reliably transmit the pressure of the upper structure to the piers; they have good elasticity to adapt to the rotation of the beam ends; and they have a large shear deformation capacity to meet the horizontal displacement of the length and width directions of the upper structure.

[0003] The patent with announcement number CN209243568U discloses a bridge rubber bearing, including an upper bearing plate, a lower bearing plate, a sliding plate, a rubber block and a dust cover, wherein the upper bearing plate is fixed on the bridge; the lower bearing plate is installed on the bridge pier, and a rectangular slide groove is arranged on the upper surface of the lower bearing plate, the length direction of the slide groove is consistent with the length direction of the bridge, the sliding plate is placed in the slide groove and has space for sliding along the direction of the bridge; the rubber block is arranged between the sliding plate and the upper bearing plate, and the upper and lower ends of the rubber block are fixedly connected to the upper bearing plate and the sliding plate respectively.

[0004] The above patent solves the problem that the traditional rubber bearing has a weak ability to adapt to sliding in the direction of the bridge. The relative sliding between the sliding plate and the slide groove avoids the stress generated inside the rubber block, and can especially solve the problem that the existing rubber bearing is easy to deform under the action of horizontal stress. Its specification states that "the lower bearing plate is installed on the bridge pier. The manufacturing method is as follows: prepare a rectangular thick steel plate, such as a thick steel plate with a thickness of millimeters, drill holes at the four corners of the thick steel plate to form mounting holes, and weld four stop irons on the upper surface of the thick steel plate to form a rectangular slide groove. The width of the slide groove is equal to the width of the sliding plate, and the length of the slide groove is greater than the length of the sliding plate in the length direction. That is to say, the sliding plate has space to slide along the length direction in the slide groove." Since the width of the slide groove is equal to the width of the sliding plate, it can only rely on the elastic deformation ability of the rubber block to meet the displacement in the width direction of the bridge. When an earthquake disaster occurs, the earthquake is highly destructive. Therefore, when the bridge is displaced greatly in the width direction, it is very easy to exceed the elastic deformation capacity of the rubber block, thereby causing damage to the rubber block. And because the bridge and piers shake violently when an earthquake occurs, there is a risk of the sliding plate falling out of the slideway.

[0005] Therefore, it is necessary to develop a bridge rubber bearing to address the above defects. Utility Model Content

[0006] The utility model aims to provide a bridge rubber bearing, which can reduce the probability of rubber damage when an earthquake disaster occurs.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] The utility model discloses a bridge rubber bearing, comprising a first mounting plate, a second mounting plate and a rubber bearing assembly, wherein the first mounting plate and the second mounting plate are arranged parallel to each other, the rubber bearing assembly is located between the first mounting plate and the second mounting plate, the first mounting plate is clamped with the top end of the rubber bearing assembly and slides along the length direction of the bridge, and the second mounting plate is clamped with the bottom end of the rubber bearing assembly and slides along the width direction of the bridge;

[0009] A plurality of limiting rods are detachably connected between the side wall of the first mounting plate and the side wall of the second mounting plate;

[0010] It also includes a limiting plate capable of limiting the sliding travel at the top and bottom ends of the rubber support assembly.

[0011] Furthermore, guide rails are integrally formed on the opposite surfaces of the first mounting plate and the second mounting plate, and the length directions of the two guide rails are perpendicular to each other, slide grooves are provided on both sides of the guide rails, and sliders are provided at both ends of the rubber support assembly, the sliders are groove-type, and protrusions matching the slide grooves are integrally formed on two opposite inner walls of the sliders, and the protrusions are snap-fitted and slidably engaged with the slide grooves; the limiting plates are fixed at both ends of each of the guide rails, and the width of the limiting plates is greater than the width of the guide rails.

[0012] Furthermore, the rubber bearing assembly includes an end steel plate and a bearing body, the end steel plates are provided with two and are respectively fixed at two ends of the bearing body, and the sliding block is integrally formed with the end steel plates.

[0013] Furthermore, at least two limit rods are vertically provided, and the two limit rods are located on adjacent sides of the bridge rubber bearing. The limit rod is U-shaped, and the top end of the limit rod is plugged into the first mounting plate, and the bottom end of the limit rod is plugged into the second mounting plate.

[0014] Furthermore, it also includes a rubber protective tube, which is a corrugated tube. The rubber protective tube is arranged around the rubber support assembly, and both ends of the rubber protective tube are fixedly connected to the first mounting plate and the second mounting plate respectively.

[0015] Furthermore, buffer springs are horizontally provided at both ends of each slider, and blind holes are opened on the two end surfaces of the slider and one side of the limit plate, one end of the buffer spring is located in the blind hole of the slider and fixedly connected, and the other end of the buffer spring is located in the blind hole of the limit plate and fixedly connected.

[0016] Compared with the prior art, the beneficial technical effects of the utility model are:

[0017] The utility model discloses a rubber bearing for a bridge. The rubber bearing assembly, a first mounting plate and a second mounting plate can slide relative to each other along the length direction and the width direction of the bridge. Thus, when an earthquake disaster occurs, the rubber bearing assembly can slide in the length direction and the width direction of the bridge, and does not rely solely on the elastic deformation ability of the rubber. Within the sliding range of the rubber bearing assembly, the rubber of the rubber bearing assembly will not be shear deformed, thereby reducing the probability of rubber damage when an earthquake disaster occurs.

[0018] The setting of the limiting plate can prevent the rubber support assembly from falling out from between the first mounting plate and the second mounting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 is a schematic diagram of the three-dimensional structure of Example 1;

[0021] Figure 2 It is a schematic diagram of the decomposition structure of Example 1;

[0022] Figure 3 This is a schematic diagram of the decomposition structure of Example 2.

[0023] Explanation of the accompanying drawings: 1. First mounting plate; 2. Second mounting plate; 3. Limit rod; 4. Limit plate; 5. Guide rail; 6. Slider; 7. End steel plate; 8. Support body; 9. Rubber protective tube; 10. Buffer spring; 11. Blind hole. DETAILED DESCRIPTION

[0024] The core of the utility model is to provide a bridge rubber bearing, which can reduce the probability of rubber damage when an earthquake disaster occurs.

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "middle", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0027] Example 1

[0028] In a specific embodiment of the present invention, Figures 1-2 As shown, it includes a first mounting plate 1, a second mounting plate 2 and a rubber bearing assembly. The first mounting plate 1 and the second mounting plate 2 are arranged parallel to each other. The rubber bearing assembly is located between the first mounting plate 1 and the second mounting plate 2. The first mounting plate 1 is clamped with the top end of the rubber bearing assembly and slides along the length direction of the bridge. The second mounting plate 2 is clamped with the bottom end of the rubber bearing assembly and slides along the width direction of the bridge. Specifically, the rubber bearing assembly, the first mounting plate 1 and the second mounting plate 2 can slide relative to each other along the length direction and the width direction of the bridge. Therefore, when an earthquake disaster occurs, the rubber bearing assembly can slide in the length direction and the width direction of the bridge, and not only relies on the elastic deformation ability of the rubber. Within the sliding range of the rubber bearing assembly, the rubber of the rubber bearing assembly will not undergo shear deformation, thereby reducing the probability of rubber damage when an earthquake disaster occurs.

[0029] A plurality of limit rods 3 are detachably connected between the side walls of the first mounting plate 1 and the side walls of the second mounting plate 2; specifically, during transportation and installation of the utility model, they are used to position and limit the first mounting plate 1, the second mounting plate 2 and the rubber support assembly to prevent relative sliding of the three.

[0030] The rubber support assembly also includes a limit plate 4 that can limit the sliding travel of the top and bottom ends of the rubber support assembly. Specifically, the rubber support assembly is prevented from slipping out of between the first mounting plate 1 and the second mounting plate 2.

[0031] The first mounting plate 1 and the second mounting plate 2 are both integrally formed with guide rails 5 on the opposite surfaces, and the length directions of the two guide rails 5 are perpendicular to each other. Slide grooves are provided on both sides of the guide rails 5, and sliders 6 are provided at both ends of the rubber bearing assembly. The sliders 6 are groove-type, and protrusions matching the slide grooves are integrally formed on the two opposite inner walls of the sliders 6. The protrusions are engaged and slidably matched with the slide grooves. Limiting plates 4 are fixed at both ends of each guide rail 5, and the width of the limiting plates 4 is greater than the width of the guide rails 5. Specifically, the first mounting plate 1 can slide relative to the rubber bearing assembly in the length direction of the bridge, and the second mounting plate 2 can slide relative to the rubber bearing assembly in the width direction of the bridge. The limiting plates 4 prevent the sliders 6 from separating from the guide rails 5.

[0032] The rubber bearing assembly includes an end steel plate 7 and a bearing body 8. Two end steel plates 7 are provided and fixed at the two ends of the bearing body 8 respectively. The slider 6 is formed integrally with the end steel plate 7. Specifically, the bearing body 8 has the same structure as the prior art, that is, it is formed by interlacing multiple layers of rubber sheets and thin steel plates, vulcanizing and bonding. If the two ends of the bearing body 8 are thin steel plates, the end steel plates 7 are welded to the thin steel plates; if the two ends of the bearing body 8 are rubber sheets, the end steel plates 7 are vulcanized together with the rubber sheets.

[0033] At least two limit rods 3 are vertically provided, and the two limit rods 3 are located on the adjacent sides of the bridge rubber bearing. The limit rod 3 is U-shaped, and the top end of the limit rod 3 is plugged into the first mounting plate 1, and the bottom end of the limit rod 3 is plugged into the second mounting plate 2. The first mounting plate 1, the second mounting plate 2 and the rubber bearing assembly can be positioned and limited by the provision of the two limit rods 3, so as to facilitate transportation and installation. In particular, after the first mounting plate 1 is fixed to the bridge pier, the second mounting plate 2 and the rubber bearing assembly may slide due to wind or collision. The provision of the limit rod 3 can prevent the relative position of the first mounting plate 1 and the second mounting plate 2 from changing, and the rubber bearing assembly is positioned in the middle of the two, so as to facilitate installation.

[0034] It also includes a rubber protective tube 9, which is a corrugated tube. The rubber protective tube 9 is arranged around the rubber support assembly, and both ends of the rubber protective tube 9 are fixedly connected to the first mounting plate 1 and the second mounting plate 2 respectively.

[0035] The utility model discloses a bridge rubber bearing with a working principle as follows: the first mounting plate 1 can slide relative to the rubber bearing assembly in the length direction of the bridge, and the second mounting plate 2 can slide relative to the rubber bearing assembly in the width direction of the bridge, so that when an earthquake disaster occurs, the rubber bearing assembly can slide in the length direction and the width direction of the bridge, and does not rely solely on the elastic deformation ability of the rubber. Within the sliding range of the rubber bearing assembly, the rubber of the rubber bearing assembly will not be shear deformed, thereby reducing the probability of rubber damage when an earthquake disaster occurs.

[0036] The first mounting plate 1, the second mounting plate 2 and the rubber bearing assembly can be positioned and limited by the two limiting rods 3, so as to facilitate transportation and installation. In particular, after the first mounting plate 1 is fixed to the bridge pier, the second mounting plate 2 and the rubber bearing assembly may slide due to wind or collision. The limiting rods 3 can prevent the relative position of the first mounting plate 1 and the second mounting plate 2 from changing, and the rubber bearing assembly is positioned in the middle of the two, so as to facilitate installation.

[0037] Example 2

[0038] Embodiment 2 is implemented on the basis of embodiment 1, and can buffer the impact force of the slider 6 on the limit plate 4 when a strong earthquake occurs.

[0039] Buffer springs 10 are horizontally provided at both ends of each slider 6, and blind holes 11 are opened on both end surfaces of the slider 6 and one side of the limit plate 4. One end of the buffer spring 10 is located in the blind hole 11 of the slider 6 and fixedly connected, and the other end of the buffer spring 10 is located in the blind hole 11 of the limit plate 4 and fixedly connected.

[0040] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other, and the embodiments can be combined with each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0041] The above embodiments are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A bridge rubber bearing, characterized in that: The invention comprises a first mounting plate (1), a second mounting plate (2) and a rubber bearing assembly, wherein the first mounting plate (1) and the second mounting plate (2) are arranged parallel to each other, the rubber bearing assembly is located between the first mounting plate (1) and the second mounting plate (2), the first mounting plate (1) is clamped with the top end of the rubber bearing assembly and slides along the length direction of the bridge, and the second mounting plate (2) is clamped with the bottom end of the rubber bearing assembly and slides along the width direction of the bridge; A plurality of limiting rods (3) are detachably connected between the side wall of the first mounting plate (1) and the side wall of the second mounting plate (2); It also includes a limiting plate (4) capable of limiting the sliding travel at the top and bottom ends of the rubber support assembly.

2. The bridge rubber bearing according to claim 1, characterized in that: Guide rails (5) are integrally formed on the opposing surfaces of the first mounting plate (1) and the second mounting plate (2), and the length directions of the two guide rails (5) are perpendicular to each other. Slide grooves are provided on both sides of the guide rails (5). Slide blocks (6) are provided at both ends of the rubber support assembly. The slide blocks (6) are groove-type. Protrusions matching the slide grooves are integrally formed on two opposing inner walls of the slide blocks (6), and the protrusions are engaged with the slide grooves and slide in cooperation. The limiting plates (4) are fixed at both ends of each guide rail (5), and the width of the limiting plates (4) is greater than the width of the guide rails (5).

3. The bridge rubber bearing according to claim 2, characterized in that: The rubber bearing assembly comprises an end steel plate (7) and a bearing body (8), wherein two end steel plates (7) are provided and are respectively fixed at two ends of the bearing body (8), and the sliding block (6) is integrally formed with the end steel plates (7).

4. The bridge rubber bearing according to claim 1, characterized in that: At least two limit rods (3) are vertically arranged, and the two limit rods (3) are located on adjacent sides of the bridge rubber bearing. The limit rod (3) is U-shaped, and the top end of the limit rod (3) is plugged into the first mounting plate (1), and the bottom end of the limit rod (3) is plugged into the second mounting plate (2).

5. The bridge rubber bearing according to claim 1, characterized in that: It also comprises a rubber protective tube (9), which is a corrugated tube. The rubber protective tube (9) is arranged around the rubber support assembly, and the two ends of the rubber protective tube (9) are respectively fixedly connected to the first mounting plate (1) and the second mounting plate (2).

6. The bridge rubber bearing according to claim 2, characterized in that: Buffer springs (10) are horizontally arranged at both ends of each slider (6), and blind holes (11) are provided on both end surfaces of the slider (6) and one side of the limit plate (4), one end of the buffer spring (10) is located in the blind hole (11) of the slider (6) and is fixedly connected, and the other end of the buffer spring (10) is located in the blind hole (11) of the limit plate (4) and is fixedly connected.

Images