阅读说明：本技术 一种用于轨道交通连接的精密轴承 (Precise bearing for rail transit connection ) 是由 张道忠 朱伟 徐金峰 姜玉红 于 2019-11-29 设计创作，主要内容包括：本发明提供了一种用于轨道交通连接的精密轴承,轴承外圈固定有第一座孔和第二座孔,第一座孔和第二座孔通过螺栓连接,座孔与轴承外圈之间设有高分子弹性体,高分子弹性体固定在轴承外圈的外径面上,且与座孔的内径面配合。本发明通过设置高分子弹性体,有效减少外界的冲击,保证车辆的安全性、舒适性和可靠性；另外,第一座孔和第二座孔的外径可根据车辆连接结构要求进行调整,具有很强的通用性。(The invention provides a precision bearing for rail transit connection.A first seat hole and a second seat hole are fixed on a bearing outer ring, the first seat hole and the second seat hole are connected through a bolt, a high polymer elastic body is arranged between the seat holes and the bearing outer ring, and the high polymer elastic body is fixed on the outer diameter surface of the bearing outer ring and matched with the inner diameter surface of the seat holes. According to the invention, the high-molecular elastomer is arranged, so that external impact is effectively reduced, and the safety, comfort and reliability of the vehicle are ensured; in addition, the outer diameters of the first seat hole and the second seat hole can be adjusted according to the requirements of the vehicle connecting structure, and the universality is high.)

1. A precision bearing for rail transit connects which characterized in that: including bearing inner race (1), first seat hole (6) and second seat hole (7) are connected through bolt (8), and the terminal surface department processing of first seat hole (6) and second seat hole (7) has first seal groove (9), bearing inner race (1) and seat hole fixed connection, and be equipped with between seat hole and bearing inner race (1) polymer elastomer (4).

2. The precision bearing for rail transit connection of claim 1, wherein: the high polymer elastic body (4) is fixed on the outer diameter surface of the bearing outer ring (1) and matched with the inner diameter surface of the seat hole.

3. The precision bearing for rail transit connection of claim 2, wherein: the high polymer elastomer (4) is fixed on the outer diameter surface of the bearing outer ring (1) in a mode of injection molding or vulcanization or mechanical connection.

4. The precision bearing for rail transit connection of claim 1, wherein: the material of the high polymer elastic body (4) is rubber or plastic.

5. The precision bearing for rail transit connection of claim 1, wherein: the spherical friction pair is characterized by further comprising an inner ring (2), wherein self-lubricating materials (3) are bonded on the inner spherical surface of the inner ring (2), and the self-lubricating materials (3) are in contact with the outer spherical surface of the inner ring (2) to form a pair of spherical friction pairs.

6. The precision bearing for rail transit connection of claim 5, wherein: the inner spherical surface of the inner ring (2) is bonded with the self-lubricating material (3) by adopting a secondary curing process.

7. The precision bearing for rail transit connection of claim 5, wherein: the inner ring (2) comprises an outer spherical surface (201) and an end surface (203), and a second sealing groove (205) is machined between the outer spherical surface (201) and the end surface (203).

8. The precision bearing for rail transit connection of claim 7, wherein: the first sealing groove (9) and the second sealing groove (205) are matched with the dust cover (5).

Technical Field

The invention belongs to the technical field of machinery, and particularly relates to a precision bearing for rail transit connection.

Background

The bearing for the rail transit connection is important for the safety, the comfort and the reliability of the operation of rail transit equipment and the economical efficiency of manufacturing and maintaining. The conventional joint bearing cannot be universally used in various working conditions of the rail transit vehicle under complex use conditions of the rail transit vehicle, only one bearing can be independently designed according to each working condition, and the reliability and the economical efficiency of manufacturing and maintaining are high. In addition, the effect of the bearing on shock absorption and noise reduction is not ideal enough, and the safety and the comfort of passengers are affected.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides the precision bearing for rail transit connection, which can improve the safety, reliability, comfort and universality of rail transit vehicles and better reduce the economic cost.

The utility model provides a precision bearing for track traffic connects, includes bearing inner race, first seat hole and second seat hole, bolted connection is passed through in first seat hole and second seat hole, and the terminal surface department processing in first seat hole and second seat hole has first seal groove, bearing inner race and seat hole fixed connection, and be equipped with polymer elastomer between seat hole and the bearing inner race.

According to the technical scheme, the high polymer elastomer is fixed on the outer diameter surface of the bearing outer ring and matched with the inner diameter surface of the seat hole.

According to the technical scheme, the high polymer elastomer is fixed on the outer diameter surface of the bearing outer ring in an injection molding or vulcanization or mechanical connection mode.

According to the technical scheme, the high polymer elastomer is made of rubber or plastic.

According to the technical scheme, the novel spherical friction pair further comprises an inner ring, wherein a self-lubricating material is bonded on the inner spherical surface of the inner ring, and the self-lubricating material is in contact with the outer spherical surface of the inner ring to form a pair of spherical friction pairs.

According to the technical scheme, the inner spherical surface of the inner ring is bonded with the self-lubricating material by adopting a secondary curing process.

According to the technical scheme, the inner ring comprises the outer spherical surface and the end surface, and the second sealing groove is machined between the outer spherical surface and the end surface.

Above-mentioned technical scheme, first seal groove, second seal groove all cooperate with the dust cover.

The invention has the beneficial effects that: according to the invention, the high polymer elastomer is arranged between the outer diameter surface of the bearing outer ring and the inner diameter surface of the seat hole, and the high polymer elastomer has high damping characteristic, so that external impact can be effectively filtered, and vibration and noise are reduced, thereby ensuring the safety, comfort and reliability of a vehicle. Through adjusting bearing seat hole external diameter size, can be fit for various typical connection structure that use under different operating modes such as city rail, subway, passenger traffic, high-speed railway. In addition, the self-lubricating material is bonded on the inner spherical surface of the bearing outer ring, so that the bearing has a long service life under the condition of high torque.

Drawings

FIG. 1 is a cross-sectional view of a precision bearing for rail transit joints in accordance with the present invention;

fig. 2 is a schematic structural view of the dust cover of the present invention.

Wherein: 1-bearing outer ring, 2-bearing inner ring, 3-self-lubricating material, 4-high polymer elastomer, 5-dust cover, 6-first seat hole, 7-second seat hole, 8-bolt, 9-first sealing groove, 201-outer spherical surface, 202-inner diameter, 203-end surface, 204-outer diameter, 205-second sealing groove, 501-rubber body, 502-framework and 503-spring.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.

As shown in fig. 1, a precision bearing for rail transit connection includes a bearing outer ring 1, a bearing inner ring 2, a self-lubricating material 3, a polymer elastomer 4, a dust cover 5, a first seat hole 6, a second seat hole 7 and a bolt 8. The first seat hole 6 and the second seat hole 7 are connected through a bolt 8, and an inverted L-shaped first seal groove 9 is respectively processed at the end faces of the first seat hole 6 and the second seat hole 7.

The seat hole is fixedly connected with the bearing outer ring 1, and a gap is formed between the seat hole and the bearing outer ring 1 and used for arranging the high polymer elastomer 4. Macromolecular elastomer 4 is fixed on bearing inner race 1's outer diametric plane through modes such as moulding plastics, vulcanization, mechanical connection, and with the cooperation of the inner diametric plane of first seathole 7 and second seathole 8, when vehicle bottom vibrations, macromolecular elastomer 4 effectively filters the impact through high damping characteristic, plays the effect of shock attenuation and noise reduction, keeps the security and the travelling comfort of vehicle. The polymer elastic body 4 may be made of rubber, plastic, or other materials having equivalent functions.

The inner spherical surface of the bearing outer ring 1 is bonded with the self-lubricating material 3 by adopting a secondary curing process, and the self-lubricating material 3 is contacted with the outer spherical surface of the bearing inner ring 2 to form a pair of spherical friction pairs.

The bearing inner ring 2 comprises an outer spherical surface 201, an inner diameter 202, an end surface 203, an outer diameter 204 and a second sealing groove 205, wherein the groove-shaped second sealing groove 205 is machined in the inner ring 2 between the outer spherical surface 201 and the end surface 203.

As shown in fig. 2, the dust cover 5 is composed of a rubber body 501, a frame 502 and a spring 503, two ends of the rubber body 501 are respectively fixed with the frame 502 and the spring 503, the outer diameter of the frame 502 is matched with the inner diameter of the first sealing groove 9, and the outer diameter of the spring 503 is matched with the second sealing groove 205 in a contact manner. The dust cover 5 is made of rubber, and is preferably S-shaped.

In this embodiment, the outer spherical surface 201 of the bearing inner ring 2 is processed by chrome plating, and the surfaces of the first seat hole 6 and the second seat hole 7 are processed by zinc-nickel alloy plating, so that the surface of the product has strong corrosion resistance.

The precision bearing is connected with a vehicle carriage through a connecting structure between the outer diameter of the two holes and the inner diameter of the inner ring, so that the precision bearing is connected with various vehicles such as urban rails, subways, passenger trains, high-speed rails and the like. The outer diameters of the first seat hole 6 and the second seat hole 7 can be adjusted according to the requirements of a vehicle connecting structure, the internal structure of the bearing does not need to be changed, the bearing is designed in a standardized mode, and the universality is very strong.

The above embodiments are only used for illustrating the design idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention accordingly, and the protection scope of the present invention is not limited to the above embodiments. Therefore, all equivalent changes and modifications made in accordance with the principles and concepts disclosed herein are intended to be included within the scope of the present invention.