A multi-point support spherical bearing

Abstract

A multi-point supported spherical bearing includes an upper base plate, a middle base plate, a lower base plate and a lower base plate. At least two middle base plates and at least two lower base plates are arranged between an upper base plate and a lower base plate. The number of middle base plates is the same as that of lower base plates. The lower base plate is mechanically connected to the lower base plate. A middle base plate and a lower base plate form a rotating support body. At least two rotating support bodies are arranged in a single row and parallel to each other, and the center line of the arrangement is parallel to the horizontal bridge direction of the bearing. The idea of ​​"breaking the whole into parts" is adopted to change the vertical force of the bearing from single-point support to multi-point support, which greatly reduces the specifications of the support structure. A single support body can be directly machined by plate machining. At the same time, the support body adopts standardized and serialized design, which is conducive to realizing assembly line operation, improving manufacturing efficiency, and reducing the production cost of the bearing. At the same time, mechanical connection is adopted between the various components of the bearing, which is conducive to the maintenance and replacement of the bearing.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge or building bearings, and specifically relates to a multi-point supporting spherical bearing. Background Art

[0002] Spherical bearings have the advantages of high bearing capacity, simple structure, flexible rotation and good durability. They are widely used in bridges, buildings and other fields.

[0003] The main structure of the currently commonly used spherical bearing is mainly composed of three major components: an upper seat plate, a middle seat plate, and a lower seat plate. There are two main production methods commonly used for the bearing components. One is to directly machine the plate into shape, and the other is to cast first and then machine it into shape.

[0004] The plate machining process is easy to purchase raw materials, has low cost, few processes, simple process control, short production cycle, and good bearing economy, but it is only suitable for small-tonnage spherical bearings with small component thickness; large-tonnage spherical bearings generally adopt the process of first casting and then machining, which has complex control process, many processing steps, and long production cycle, seriously affecting the economic efficiency of spherical bearings. Therefore, changing the bearing production method from first casting and then machining to plate machining is an important means to improve the bearing economy.

[0005] The common practice at present is to split and reorganize the various parts of the support according to their functions ( Figure 1 ), such as splitting the upper seat plate into an upper flat steel plate + side guide plate, or splitting the lower seat plate into a support platform + lower flat steel plate. The size of the parts can be further reduced by splitting, making it possible to use the plate for machining.

[0006] When the bearing tonnage reaches a certain level, even if the components are split, the thickness of the parts still exceeds the thickness range of the plate, and the plate cannot be used for machining. In order to ensure the integrity of the bearing and the safety and reliability of the force, it is not meaningful to continue to split the parts. Therefore, large-tonnage spherical bearings still face the difficulties of many processing steps, high costs, and long production cycles. Summary of the invention

[0007] In order to solve the above technical problems, the present invention provides a multi-point support spherical bearing, which adopts the idea of ​​"breaking the whole into parts" to change the vertical force of the bearing from single-point support to multi-point support, greatly reducing the specifications of the support structure. A single support can be directly machined by plate machining. At the same time, the support adopts standardized and serialized design, which is conducive to realizing assembly line operation, improving manufacturing efficiency, and reducing the production cost of the bearing. At the same time, mechanical connection is adopted between the various components of the bearing, which is conducive to the maintenance and replacement of the bearing.

[0008] In order to achieve the above technical objectives, the technical solution adopted is: a multi-point supported spherical bearing, including an upper base plate, a middle base plate, a lower base plate and a lower base plate, at least 2 middle base plates and at least 2 lower base plates are arranged between an upper base plate and a lower base plate, the number of middle base plates and lower base plates is the same, the lower base plate is mechanically connected to the lower base plate, a middle base plate and a lower base plate form a rotating support body, at least 2 rotating support bodies are arranged in a single row and side by side, and the center line of their arrangement is parallel to the cross-bridge direction of the bearing.

[0009] The two sides of the adjacent lower seat plates are arranged in contact with each other.

[0010] Matching guide plates are respectively attached to the corresponding sides of the two adjacent lower seat plates. The guide plates are mechanically connected to the lower base plate. The opposite sides of the two guide plates are flat. A long strip-type limiting plate is arranged between the two guide plates. The length direction of the limiting plate is arranged along the longitudinal bridge direction and is mechanically connected to the upper base plate. A gap is reserved between the limiting plate and the lower base plate.

[0011] Guide plates are provided on the corresponding sides of the two adjacent lower seat plates, and the two sides of the guide plates are respectively matched with the sides of the two lower seat plates. The guide plates are mechanically connected to the lower base plate. A vertical through hole is opened in the middle of the guide plate, and a limit plate is provided in the vertical through hole. The limit plate is mechanically connected to the upper base plate, and a gap is reserved between the limit plate and the lower base plate and the guide plate.

[0012] The beneficial effects of the present invention are:

[0013] The present invention distributes the vertical load of the spherical bearing originally supported by a single middle seat plate and a lower seat plate into a support body composed of multiple groups of middle seat plates and lower seat plates to jointly bear the vertical load. The weight and specifications of the structure of the middle seat plate and the lower seat plate are greatly reduced, and the plate can be directly machined and formed, eliminating the casting process control flow, greatly shortening the bearing production cycle and manufacturing cost. At the same time, the middle seat plate and the lower seat plate are easy to realize standardized and serialized design, which is conducive to industrialized assembly line production operations and improves manufacturing efficiency. In addition, the limit plate and the guide plate are arranged in the middle of the support body, and a set of limit structures can be used to simultaneously bear the horizontal load of the bearing in the two directions of reciprocating motion in the limit direction, reducing the number of limit structures and further improving the economy of the bearing. The various components of the bearing have independent functions and are connected mechanically. Maintenance and replacement can be carried out on specific parts, which is less expensive and more convenient to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the prior art structure;

[0015] Figure 2 This is the front view of embodiment 1 of the present invention

[0016] Figure 3AA view of embodiment 1 of the present invention.

[0017] Figure 4 It is a front view of embodiment 2 of the present invention.

[0018] Figure 5 This is the AA view of embodiment 2 of the present invention.

[0019] Figure 6 It is a top view of the guide plate of embodiment 2 of the present invention.

[0020] Figure 7 It is a front view of embodiment 3 of the present invention.

[0021] Figure 8 This is the AA view of embodiment 3 of the present invention.

[0022] In the figure: 1, upper base plate; 2, middle base plate; 3, lower base plate; 4, lower base plate; 5, limit plate; 6, guide plate. DETAILED DESCRIPTION

[0023] The present invention is described in conjunction with the accompanying drawings and specific embodiments; however, the present invention is not limited to these embodiments.

[0024] A multi-point supported spherical bearing comprises an upper base plate 1, a middle base plate 2, a lower base plate 3 and a lower base plate 4. At least two middle base plates and at least two lower base plates are arranged between an upper base plate and a lower base plate. The number of the middle base plates is the same as that of the lower base plates. The lower base plates are mechanically connected to the lower base plate. A middle base plate and a lower base plate form a rotating support body. At least two rotating support bodies are arranged in a single row and parallel to each other, and the center line of the arrangement is parallel to the cross-bridge direction of the bearing.

[0025] The rotating support body can realize the vertical rotation function. The middle seat plate and the lower seat plate are matched with spherical surfaces, curved surfaces, etc. that can realize the rotation function. The curved surface should be set in the longitudinal direction of the bridge.

[0026] The sides of two adjacent lower seat plates are arranged in contact with each other. In this structure, the two adjacent lower seat plates can be a whole, or connected as a whole by a mechanical structure. This structure can transform the multi-point support into a multi-directional movable support. The upper base plate cooperates with the rotating support body to realize multi-directional sliding, and the rotating support body can realize the longitudinal bridge rotation function.

[0027] Matching guide plates are respectively attached to the corresponding sides of the two adjacent lower seat plates. When the lower seat plate is a cylinder, the outer side of the guide plate is an arc surface; when the lower seat plate is a cuboid, the outer side of the guide plate is a plane. The guide plate is mechanically connected to the lower base plate. The opposite sides of the two guide plates are planes. A long strip limit plate is provided between the two guide plates. Both side surfaces of the limit plate are planes. The length direction of the limit plate is arranged along the longitudinal bridge direction and is mechanically connected to the upper base plate. A gap is reserved between the limit plate and the lower base plate. The reserved gap ensures that the rotation of the rotating support is not affected. This structure can transform the multi-point supported spherical bearing into a unidirectional movable bearing, and utilize the limit plate and the guide plate to realize longitudinal bridge movement, transverse bridge horizontal limitation, and longitudinal bridge rotation.

[0028] Guide plates are provided on the corresponding sides of the two adjacent lower seat plates, and the two sides of the guide plates are respectively matched with the sides of the two lower seat plates. When the lower seat plate is a cylinder, the outer side surface of the guide plate is an arc surface; when the lower seat plate is a rectangular parallelepiped, the outer side surface of the guide plate is a plane. The guide plate is mechanically connected to the lower base plate, and a vertical through hole is opened in the middle of the guide plate. A limit plate is provided in the vertical through hole. The limit plate is mechanically connected to the upper base plate, and a gap is reserved between the limit plate and the lower base plate and the guide plate. The reserved gap ensures that the rotation of the rotating support is not affected. This structure can transform the multi-point supported spherical bearing into a fixed bearing, and use the limit plate and the guide plate to realize horizontal limit in the longitudinal and transverse directions of the bridge and rotation in the longitudinal direction of the bridge.

[0029] Embodiment 1:

[0030] A multi-point supported spherical bearing, such as Figure 2 , Figure 3As shown, it is mainly composed of an upper base plate 1, a middle base plate 2, a lower base plate 3, a lower base plate 4, a limit plate 5 and a guide plate 6. This embodiment is a one-way movable support. The support contains two middle base plates 2 and two lower base plates 3. The middle base plates 2 and the lower base plates 3 form two rotating support bodies. The vertical force of the support is shared by the two rotating support bodies. The lower base plate 3 is a cylinder. The upper surface of the lower base plate 3 is processed with a concave spherical surface for inlaying non-metallic slide plates. The lower base plate 3 is mechanically connected to the lower base plate 4. A metal slide plate is installed on the lower surface of the middle base plate 2 to form a rotating friction pair with the non-metallic slide plate. The vertical load on the upper part of the support is transmitted to the middle base plate 2 through the upper base plate 1, then to the lower base plate 3, then to the lower base plate 4, and finally to the foundation. The two rotating support bodies are arranged in a single row along the transverse bridge direction, and the support can realize the longitudinal bridge direction rotation around the concave spherical surface of the lower base plate 4 along the connecting line of the rotating support bodies. The limit plate 5 and the guide plate 6 are arranged between the two rotating support bodies. The limit plate 5 is a rectangular parallelepiped, and the long side direction is arranged along the longitudinal bridge direction. The guide plate 6 is a long strip, and one side of the long side cooperates with the side of the lower seat plate 3 and is an arc surface, and the other side cooperates with the side of the limit plate 5 and is a plane. A gap is reserved between the limit plate 5 and the lower base plate 4 to meet the rotation space requirements of the support. The limit plate 5 is connected to the upper base plate 1 by a mechanical connection, and the guide plate 6 is connected to the lower base plate 4 by a mechanical connection. The horizontal load on the upper part of the support in the transverse bridge direction is transmitted to the limit plate 5 through the upper base plate 1, then to the guide plate 6, then to the lower base plate 4, and finally to the foundation.

[0031] Embodiment 2:

[0032] A multi-point supported spherical bearing, such as Figure 4-Figure 6As shown, it is mainly composed of an upper base plate 1, a middle base plate 2, a lower base plate 3, a lower base plate 4, a limit plate 5 and a guide plate 6. This embodiment is a fixed support, and the support contains two middle base plates 2 and two lower base plates 3. The middle base plates 2 and the lower base plates 3 form two rotating support bodies, and the vertical force of the support is shared by the two rotating support bodies. The lower base plate 3 is a cylinder, and the upper surface of the lower base plate 3 is processed with a concave spherical surface for inlaying non-metallic slide plates. The lower base plate 3 is mechanically connected to the lower base plate 4. A metal slide plate is installed on the lower surface of the middle base plate 2, and forms a rotating friction pair with the non-metallic slide plate. The vertical load on the upper part of the support is transmitted to the middle base plate 2 through the upper base plate 1, then to the lower base plate 3, then to the lower base plate 4, and finally to the foundation. The two rotating support bodies are arranged in a single row along the transverse bridge direction, and the support can realize the longitudinal bridge direction rotation around the concave spherical surface of the lower base plate along the connecting line of the rotating support body. The limit plate 5 and the guide plate 6 are arranged between the two rotating support bodies. The limit plate 5 is a rectangular parallelepiped with the long side in the longitudinal direction. The guide plate 6 is a hollow rectangular parallelepiped with a through hole dug vertically inside. The hole shape is rectangular. One side of the outer long side of the guide plate 6 cooperates with the side of the lower seat plate 3 and is an arc surface, and the inner side cooperates with the side of the limit plate 5 and is a plane. There is a gap reserved between the lower surface of the limit plate 5 and the upper surface of the lower base plate 4, the side of the limit plate and the through hole surface of the guide plate 6 to meet the rotation space requirements of the support. The limit plate 5 is connected to the upper base plate 1 by a mechanical connection, and the guide plate 6 is connected to the lower base plate 4 by a mechanical connection. The horizontal load on the upper part of the support in the transverse direction is transmitted to the limit plate 5 through the upper base plate 1, then to the guide plate 6, then to the lower base plate 4, and finally to the foundation.

[0033] Embodiment 3:

[0034] A multi-point supported spherical bearing, such as Figure 7 , Figure 8 As shown, it is mainly composed of upper base plate 1, middle base plate 2, lower base plate 3, lower base plate 4 and other components. This embodiment is a multi-directional movable support. The support contains two middle base plates 2 and two lower base plates 3. The middle base plates 2 and the lower base plates 3 form two rotating support bodies. The vertical force of the support is jointly borne by the two rotating support bodies. The lower base plate 3 is a cylinder. The upper surface of the lower base plate 3 is processed with a concave spherical surface for inlaying non-metallic slide plates. The lower base plate 3 and the lower base plate 4 are mechanically connected. The two lower base plates 3 are arranged in contact with each other at the center line of the transverse bridge. A metal slide plate is installed on the lower surface of the middle base plate 2, which forms a rotating friction pair with the non-metallic slide plate. A sliding friction pair is provided between the upper base plate 1 and the upper surface of the middle base plate 2 to realize the multi-directional sliding of the upper base plate 1 on the horizontal plane. The vertical load on the upper part of the support is transmitted to the middle base plate 2 through the upper base plate 1, then to the lower base plate 3, then to the lower base plate 4, and finally to the foundation. The two rotating support bodies are arranged in a single row along the transverse bridge direction, and the support can realize the rotation in the longitudinal bridge direction around the concave spherical surface of the lower seat plate 4 along the connecting line of the rotating support bodies.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit or restrict the present invention. For researchers or technicians in this field, the present invention may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection declared by the present invention.

Claims

1. A multi-point support spherical bearing, characterized in that: It includes an upper base plate, a middle seat plate, a lower seat plate and a lower base plate. At least two middle seat plates and at least two lower seat plates are arranged between an upper base plate and a lower base plate. The number of the middle seat plates is the same as that of the lower seat plates. The lower seat plate is mechanically connected to the lower base plate. A middle seat plate and a lower seat plate form a rotating support body. At least two rotating support bodies are arranged in a single row and parallel to each other, and the center line of the arrangement is parallel to the cross-bridge direction of the support.

2. A multi-point support spherical bearing as claimed in claim 1, characterized in that: The two sides of the adjacent lower seat plates are arranged in contact with each other.

3. The multi-point support spherical bearing according to claim 1, characterized in that: Matching guide plates are respectively attached to the corresponding sides of the two adjacent lower seat plates. The guide plates are mechanically connected to the lower base plate. The opposite sides of the two guide plates are flat. A long strip-type limiting plate is arranged between the two guide plates. The length direction of the limiting plate is arranged along the longitudinal bridge direction and is mechanically connected to the upper base plate. A gap is reserved between the limiting plate and the lower base plate.

4. The multi-point support spherical bearing according to claim 1, characterized in that: Guide plates are provided on the corresponding sides of the two adjacent lower seat plates, and the two sides of the guide plates are respectively matched with the sides of the two lower seat plates. The guide plates are mechanically connected to the lower base plate. A vertical through hole is opened in the middle of the guide plate, and a limit plate is provided in the vertical through hole. The limit plate is mechanically connected to the upper base plate, and a gap is reserved between the limit plate and the lower base plate and the guide plate.

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