CN217713356U

CN217713356U - Composite sliding bearing

Info

Publication number: CN217713356U
Application number: CN202221702066.1U
Authority: CN
Inventors: 徐金峰; 朱伟
Original assignee: Jiangsu Ccvi Bearing Co ltd
Current assignee: Jiangsu Ccvi Bearing Co ltd
Priority date: 2022-07-04
Filing date: 2022-07-04
Publication date: 2022-11-01
Anticipated expiration: 2032-07-04

Abstract

The utility model provides a composite sliding bearing, which comprises an outer ring, an inner ring, a sealing ring and a protective structure, wherein the outer ring end face is processed at the two ends of the outer ring outer diameter shaft, an outer ring sealing groove is processed at the outer ring end face, the upper lip of the sealing ring is arranged at the outer ring sealing groove, the lower lip of the sealing ring is in interference fit with the inner ring, and the protective structure is contacted with the outer ring end face; the protective structure comprises a gasket and a retaining shoulder, when the protective structure selects the gasket, the inner diameter surface of the gasket is arranged at two ends of the outer raceway surface of the inner ring, and the self-lubricating material is arranged on the inner diameter of the outer ring and is in contact with the outer raceway surface of the inner ring; when the protective structure selects the retaining shoulder, the retaining shoulder is used as a part of the inner ring, the inner ring is of an integral structure which is arranged oppositely and is provided with the retaining shoulder at two sides, the integral structure is arranged on the inner diameter of the outer ring, and the retaining shoulder at two sides is contacted with the end face of the outer ring. The protective structure of the utility model provides a buffer effect when the bearing is impacted, thus improving the impact resistance of the bearing; the sealing washer can avoid external impurity to get into, prolongs bearing life.

Description

Composite sliding bearing

Technical Field

The utility model belongs to the technical field of machinery, concretely relates to compound slide bearing of shock-resistant, corrosion-resistant long-life.

Background

The composite sliding bearing is commonly used in rail transit such as high-speed railway, subway, aircraft, and the like, and the composite sliding bearing is required to have the following properties because the use occasion is special: impact resistance, strong corrosion resistance, high protection, long life, simultaneously because the part that is more with the higher part of cost is mostly installed with other accessories of compound slide bearing, therefore compound slide bearing still should possess the function of protecting other accessories.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an impact-resistant, corrosion-resistant long-life composite sliding bearing to satisfy special operating mode to each item demand of composite sliding bearing.

The utility model discloses a realize above-mentioned technical purpose through following technological means.

A composite sliding bearing comprising:

the outer ring is provided with outer ring end faces at two axial ends in the outer diameter direction, an outer ring sealing groove is formed in the end face of the outer ring, and a sealing ring upper lip is arranged at the outer ring sealing groove;

the inner ring is in interference fit with the lower lip of the sealing ring;

and the protective structure is contacted with the end face of the outer ring.

According to the technical scheme, the inner ring is composed of an inner ring outer raceway surface, an inner ring inner diameter and inner ring end surfaces, the inner ring end surfaces are located at two axial ends of the inner ring outer raceway surface, and the inner ring outer raceway surface is in contact with a self-lubricating material.

According to a further technical scheme, the protective structure is an annular gasket, and inner diameter surfaces of the gasket are arranged at two ends of an outer raceway surface of the inner ring.

According to a further technical scheme, the self-lubricating material is arranged on the inner diameter of the outer ring.

According to a further technical scheme, the end face of the inner ring is treated by nickel plating, zinc-plated nickel alloy, cadmium plating, zinc plating, chromium plating, paint spraying, electrophoretic paint, plastic spraying, phosphating, blackening or passivation.

According to a further technical scheme, the outer track surface of the inner ring is provided with a wear-resistant coating.

According to the technical scheme, the inner ring is of an integral structure which is oppositely arranged and two sides of the inner ring are provided with the retaining shoulders, the integral structure is arranged on the inner diameter of the outer ring, and the retaining shoulders on the two sides of the inner ring are in contact with the end face of the outer ring.

In a further technical scheme, the material of the integral structure is plastic or resin or a mosaic self-lubricating composite material.

According to a further technical scheme, the sealing ring is O-shaped, lip-shaped or sheet-shaped.

In a further technical scheme, the sealing ring is made of, but not limited to, silicon rubber or fluorine silicon.

The utility model has the advantages that:

(1) In the utility model, the two sides of the end face of the outer ring are provided with the protective structures (gaskets or retaining shoulders), so that the product can provide a buffer effect when being impacted axially, and the impact resistance of the bearing is improved;

(2) The antifriction design of the outer raceway surface of the inner ring can reduce the hardness of the base body and improve the impact resistance of the whole bearing;

(3) When the utility model adopts the gasket, the exposed surface (such as the end surface of the inner ring) of the bearing can adopt the processing modes of nickel plating, zinc-plated nickel alloy, cadmium plating, zinc plating, chromium plating, paint spraying, electrophoretic paint, plastic spraying, phosphorization, blackening, passivation and the like, thereby enhancing the corrosion resistance of the bearing;

(4) The utility model discloses be equipped with a seal groove respectively in outer lane both sides, install the sealing washer in the seal groove, through setting up the sealing washer, can avoid external impurity to get into work area, extension bearing's life.

Drawings

Fig. 1 (a) is a cross-sectional view of the composite plain bearing of the present invention;

fig. 1 (b) is a cross-sectional view of the gasket of the present invention;

fig. 2 is a sectional view of the composite sliding bearing according to the present invention after installation;

FIG. 3 is a schematic view of the outer ring structure of the present invention;

fig. 4 is a schematic view of the inner ring structure of the present invention;

FIG. 5 is a schematic view of the inner ring with shoulder on both sides of the present invention;

in the figure: 1-outer ring, 2-inner ring, 3-self-lubricating material, 4-sealing ring, 5-gasket, 6-bearing seat, 101-outer ring outer diameter, 102-outer ring inner diameter, 103-outer ring end face, 104-outer ring sealing groove, 201-inner ring outer raceway surface, 202-inner ring inner diameter, 203-inner ring end face.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the scope of the invention is not limited thereto.

Example 1

As shown in fig. 1 (a), 1 (b) and 2, the utility model relates to a composite sliding bearing, including outer lane 1, inner circle 2, self-lubricating material 3, sealing washer 4 and gasket 5, outer lane 1 and the coaxial setting of inner circle 2, outer lane 1 is pressed into in the bearing frame 6.

As shown in fig. 3, the outer ring 1 is composed of an outer ring outer diameter 101, an outer ring inner diameter 102, an outer ring end surface 103 and an outer ring seal groove 104, the outer ring end surface 103 is located at two axial ends of the outer ring outer diameter 101, the outer ring seal groove 104 is processed at the outer ring end surface 103, referring to fig. 1 (a), 1 (b) and 2, an upper lip of the seal ring 4 is installed in the outer ring seal groove 104 in a bonding or interference press-in mode, and the self-lubricating material 3 is installed on the outer ring inner diameter 102 in a bonding or interference press-in mode.

As shown in fig. 4, the inner ring 2 is composed of an inner ring outer raceway surface 201, an inner ring inner diameter 202 and an inner ring end surface 203, the inner ring end surface 203 is located at two axial ends of the inner ring outer raceway surface 201, and the inner ring outer raceway surface 201 is in contact with the self-lubricating material 3 to form a pair of sliding friction pairs, so that a rotating function can be realized; the lower lip of the sealing ring 4 is in interference fit with the outer raceway surface 201 of the inner ring, so that dust, muddy water, fine sand particles and moisture are prevented from entering a working area, and a high-protection function is achieved. In the present embodiment, the inner ring 2 is made of a metal material.

The inner diameter surface of the annular gasket 5 is installed at two ends of the inner ring outer raceway surface 201, and the gasket 5 contacts with the outer ring end surface 103 and the bearing seat 6 along the radial direction, so as to protect the outer ring 1 and the bearing seat 6.

In this embodiment, the shape of the sealing ring 4 may be an O-ring, a lip-shaped sealing ring or a sheet-shaped sealing ring, the sealing ring 4 is made of a material including, but not limited to, silicone rubber or fluorosilicone, and the conventional use temperature may reach 200 ℃; the material of the gasket 5 can adopt PTFE (polytetrafluoroethylene); the self-lubricating material 3 can be a fabric, a shaft sleeve, an FR soft belt, plastic or resin, and can also be an embedded self-lubricating composite material; the inner ring outer raceway surface 201 can be provided with a wear-resistant coating to prolong the service life, and the hardness of the matrix can be properly reduced while the wear-resistant coating is used, so that the wear-resistant and impact-resistant composite material has better impact resistance.

In order to further meet the requirement of high corrosion resistance, the exposed surface (inner ring end face 203) of the bearing can adopt the treatment modes of nickel plating, zinc-plated nickel alloy, cadmium plating, zinc plating, chromium plating, paint spraying, electrophoretic paint, plastic spraying, phosphating, blackening, passivation and the like to enhance the corrosion resistance.

Example 2

Different with embodiment 1, as shown in fig. 5, the utility model discloses utilize two mutual dispositions and both sides to keep off the overall structure of shoulder with self-lubricating material 3, inner circle 2 and gasket 5 among embodiment 1, the material can adopt plastics or resin, can also adopt inserted self-lubricating composite, practices thrift economic cost, and the assembly is simple, easily changes.

Specifically, the shape of the cross section of the overall structure is similar to a hat shape, during installation, the two overall structures are installed on the inner diameter 102 of the outer ring from two axial sides and are in interference fit with the lower lip of the sealing ring 4, and after the installation is completed, the blocking shoulders on the two sides are in contact with the end face 103 of the outer ring and the bearing seat 6 and are also used for protecting the outer ring 1 and the bearing seat 6.

The embodiment is a preferred embodiment of the present invention, but the present invention is not limited to the above embodiment, and any obvious improvement, replacement or modification which can be made by those skilled in the art without departing from the essence of the present invention belongs to the protection scope of the present invention.

Claims

1. A composite plain bearing, comprising:

the outer ring sealing structure comprises an outer ring (1), outer ring end faces (103) are machined at two axial ends of the outer diameter of the outer ring (1), an outer ring sealing groove (104) is machined at the outer ring end face (103), and an upper lip of a sealing ring (4) is installed at the outer ring sealing groove (104);

the inner ring (2) is in interference fit with the lower lip of the sealing ring (4);

and the protective structure is in contact with the outer ring end face (103).

2. A composite plain bearing according to claim 1, wherein the inner ring (2) is composed of an inner ring outer raceway surface (201), an inner ring inner diameter (202) and an inner ring end surface (203), the inner ring end surface (203) being located at both axial ends of the inner ring outer raceway surface (201), the inner ring outer raceway surface (201) being in contact with the self-lubricating material (3).

3. A composite plain bearing according to claim 2, wherein the protective structure is an annular shim (5), the inner diameter surface of the shim (5) being mounted at both ends of the inner ring outer raceway surface (201).

4. A composite slide bearing according to claim 2, characterized in that the self-lubricating material (3) is mounted on the outer ring inner diameter (102).

5. A composite slide bearing according to claim 2, wherein the inner ring end face (203) is treated with nickel or zinc-nickel alloy plating or cadmium plating or zinc plating or chrome plating or paint spraying or electrophoretic paint spraying or plastic spraying or phosphatization or blackening or passivation.

6. A composite slide bearing according to claim 2, characterized in that the inner ring outer raceway surface (201) is provided with a wear resistant coating.

7. A composite plain bearing according to claim 1, wherein the inner ring (2) is of two oppositely arranged integral structures with shoulders on both sides, the integral structures being mounted on the inner diameter (102) of the outer ring, the shoulders on both sides being in contact with the end surface (103) of the outer ring.

8. A composite plain bearing according to claim 7, wherein the material of the unitary structure is a plastics or resin or a self-lubricating mosaic composite material.

9. Composite plain bearing according to claim 2 or 7, characterized in that the sealing ring (4) is O-ring, lip-seal or sheet-shaped.

10. The composite plain bearing according to claim 2 or 7, characterized in that the material of the sealing ring (4) is, but not limited to, silicone rubber or fluorosilicone rubber.