Bearing bush with high stability

Abstract

The utility model discloses a bearing bush with high stability. The bearing bush comprises a bush base layer, a metal wire cushion layer for improving fatigue resistance is arranged on the inner side of the tile base layer; a welding layer for improving the connection strength between the metal wire cushion layer and the tile base layer is arranged between the metal wire cushion layer and the tile base layer; the inner side, away from the welding layer, of the metal wire cushion layer is further coated with a modified polytetrafluoroethylene layer. The inner side, away from the metal wire cushion layer, of the modified polytetrafluoroethylene layer is coated with a resin layer; a sawtooth face used for improving the structural reliability is formed on the side, facing the welding layer, of the tile base layer. One side, facing the welding layer, of the metal wire cushion layer is provided with an embedding gap which is used for embedding part of the welding layer so as to improve the structural reliability. The bearing bush with high stability is high in structural stability and long in service life.

Description

Technical Field

[0001] The utility model relates to a bearing bush with high stability. Background Art

[0002] When manufacturing traditional bearing bushes, alloy coatings are sprayed on the inner wall of the bush body to form thick-walled rings, which are used to form a clearance fit with the inside and outside of the shaft. The existing shaft and the thick-walled ring of the bush are rigidly matched, and the lubrication performance of the alloy coating is not high. It is easy to break under radial stress after long-term use, which can easily affect its service life. At the same time, the thick-walled ring is formed by directly spraying the alloy coating on the inner wall of the bush body, and the bonding force of the structure is low, and the bush layer is easy to peel off under high load and more severe working conditions. Utility Model Content

[0003] The utility model provides a bearing with high stability to solve the above-mentioned technical problems, and specifically adopts the following technical solutions:

[0004] A bearing shell with high stability, characterized in that it includes: a shell base layer; a metal wire pad layer for improving fatigue resistance is provided on the inner side of the shell base layer; a welding layer for improving the connection strength between the metal wire pad layer and the shell base layer is provided between the metal wire pad layer and the shell base layer; the inner side of the metal wire pad layer away from the welding layer is also coated with a modified polytetrafluoroethylene layer; the inner side of the modified polytetrafluoroethylene layer away from the metal wire pad layer is coated with a resin layer; a serrated surface for improving structural reliability is formed on the side of the shell base layer facing the welding layer; an embedding gap for partially embedding the welding layer to improve structural reliability is formed on the side of the metal wire pad layer facing the welding layer.

[0005] Furthermore, the welding layer is a brazing layer.

[0006] Furthermore, the welding thickness of the welding layer protruding from the tile base layer and the metal wire pad layer ranges from 0.3 to 0.5 mm.

[0007] Furthermore, the total thickness of the plastic pressing surface composed of the modified polytetrafluoroethylene layer and the resin layer ranges from 9 to 11 mm.

[0008] Furthermore, the ratio of the thickness of the resin layer to the thickness of the modified polytetrafluoroethylene layer is 4:6.

[0009] Furthermore, the ratio of the thickness of the modified polytetrafluoroethylene layer to the thickness of the metal wire pad layer is 6:4.

[0010] Furthermore, the tile base layer is a steel tile base layer made of steel.

[0011] Furthermore, the metal wire cushion layer is a copper wire cushion layer composed of copper wires.

[0012] Furthermore, the copper wire cushion layer is formed by winding and pressing the copper wire.

[0013] Furthermore, the modified polytetrafluoroethylene layer is pressed onto the inner surface of the copper wire cushion layer by cold pressing.

[0014] The utility model is beneficial in that the bearing with high stability is designed through the structural design of the bearing base layer, the wire pad layer and the welding layer, so that the overall bearing structure is more stable and the bearing has a certain stress adjustment ability. In addition, the bearing with high stability is provided with a modified polytetrafluoroethylene layer and a resin layer on the inner side of the bearing, which can effectively improve the wear resistance, load capacity, mechanical strength and self-lubricating property of the bearing, thereby improving the stability of the bearing in long-term operation and ensuring the transmission accuracy of the mechanical transmission. Such a bearing is not easy to break due to radial stress when used for a long time, and has a longer service life.

[0015] The bearing with high stability provided by the present application is stable through the connection structure of the welding layer, the metal wire pad layer, the modified polytetrafluoroethylene layer and the resin layer. The welding layer, the metal wire pad layer, the modified polytetrafluoroethylene layer and the resin layer form an integral structure of the inner wall with high bonding strength and is not prone to peeling under high loads and more harsh working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 is a schematic diagram of a bearing with high stability involved in the present application;

[0018] Figure 2 It is a partial enlarged picture;

[0019] A bearing bush 10 with high stability, a bush base layer 11, a serrated surface 111, a welding layer 12, a metal wire cushion layer 13, an embedded gap 131, a modified polytetrafluoroethylene layer 14, and a resin layer 15. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0023] like Figure 1 As shown, a bearing bush 10 with high stability of the present application is provided, comprising: a bushing base layer 11, the bushing base layer 11 provides a bushing body, the bushing base layer 11 is a steel bushing base layer 11 made of steel, and has high structural strength. A wire pad layer 13 is provided on the inner side of the bushing base layer 11 to improve fatigue resistance, thereby ensuring that it is not easy to deform and break due to radial stress during long-term use. A welding layer 12 is provided between the wire pad layer 13 and the bushing base layer 11, and the welding layer 12 can improve the connection strength between the wire pad layer 13 and the bushing base layer 11, thereby ensuring the stability of the connection structure, and the wire pad layer 13 is not easy to fall off when the shaft rotates at high speed. The inner side of the wire pad layer 13 away from the welding layer 12 is also coated with a modified polytetrafluoroethylene layer 14. The modified polytetrafluoroethylene material has the characteristics of high wear resistance, high load, high strength, good self-lubrication, etc. The modified polytetrafluoroethylene layer 14 can effectively improve the wear resistance, load capacity, structural strength and lubricity of the inner wall of the bushing. A resin layer 15 is coated on the inner side of the modified polytetrafluoroethylene layer 14 away from the metal wire pad layer 13. The resin has high lubricity and a certain stress adaptability and is not prone to cracking.

[0024] Furthermore, a sawtooth surface 111 is formed on the side of the tile base layer 11 facing the welding layer 12 to improve the structural reliability, and an embedding gap 131 is formed on the side of the metal wire pad layer 13 facing the welding layer 12 to allow a portion of the welding layer 12 to be embedded to improve the structural reliability. Through such tooth surface matching and gap embedding structure, the welding layer 12, the metal wire pad layer 13, the modified polytetrafluoroethylene layer 14 and the resin layer 15 form an inner wall with high stability, and the inner wall has a high bonding force with the tile base layer 11.

[0025] That is to say, the bearing 10 with high stability has a higher overall bearing structure stability and a certain stress adjustment capability by structurally designing the bearing base layer 11, the wire pad layer 13 and the welding layer 12. In addition, the bearing 10 with high stability can effectively improve the wear resistance, load capacity, mechanical strength and self-lubricating property of the bearing by arranging the modified polytetrafluoroethylene layer 14 and the resin layer 15 on the inner side of the bearing, thereby improving the stability of the bearing during long-term operation and ensuring the transmission accuracy of the mechanical transmission. Such a bearing is not easy to break due to radial stress when used for a long time, and has a longer service life.

[0026] In addition, the highly stable bearing 10 provided in the present application is stable through the connection structure of the welding layer 12, the metal wire pad layer 13, the modified polytetrafluoroethylene layer 14 and the resin layer 15. The overall structural bonding strength of the inner wall composed of the welding layer 12, the metal wire pad layer 13, the modified polytetrafluoroethylene layer 14 and the resin layer 15 is high and is not prone to peeling under high loads and more harsh working conditions.

[0027] As a specific implementation, the welding layer 12 is a brazing layer 12, and the welding thickness of the welding layer 12 protruding from the tile base layer 11 and the metal wire pad layer 13 is in the range of 0.3 to 0.5 mm, so as to ensure the bonding strength of the structure while avoiding the inner wall being too thick as a whole.

[0028] As a specific implementation, the total thickness of the plastic pressing surface composed of the modified polytetrafluoroethylene layer 14 and the resin layer 15 is in the range of 9 to 11 mm, wherein: the ratio of the thickness of the resin layer 15 to the thickness of the modified polytetrafluoroethylene layer 14 is 4:6; the ratio of the thickness of the modified polytetrafluoroethylene layer 14 to the thickness of the metal wire pad layer 13 is 6:4. Such parameter settings ensure that the overall inner wall has high structural strength, high fatigue resistance, high wear resistance, and high lubricity, while controlling the overall thickness of the inner wall within an applicable range, making the thickness as thin as possible, thereby further improving the stability of the connection structure between the overall inner wall and the tile base layer 11, and avoiding the situation where the inner wall is easy to fall off when the shaft rotates at high speed due to the large thickness.

[0029] As a specific implementation, the metal wire cushion layer 13 is a copper wire cushion layer composed of copper wires. The copper wire cushion layer is formed by winding and pressing the copper wires, and has high fatigue resistance and strong stress bearing capacity.

[0030] As a specific implementation, the modified polytetrafluoroethylene layer 14 is mounted on the inner surface of the copper wire cushion layer by cold pressing, and the attachment structure has higher stability.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the above embodiments do not limit the utility model in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the utility model.

Claims

1. A bearing bush with high stability, characterized in that: include: Tile base; A metal wire cushion layer for improving fatigue resistance is provided on the inner side of the tile base layer; A welding layer is provided between the metal wire pad layer and the tile base layer for improving the connection strength between the metal wire pad layer and the tile base layer; The inner side of the metal wire pad layer away from the welding layer is also coated with a modified polytetrafluoroethylene layer; The inner side of the modified polytetrafluoroethylene layer away from the metal wire pad layer is coated with a resin layer; A serrated surface is formed on one side of the tile base layer facing the welding layer to improve structural reliability; An embedding gap is formed on one side of the metal wire pad layer facing the solder layer for partially embedding the solder layer to improve structural reliability.

2. The bearing bushing with high stability according to claim 1, characterized in that: The welding layer is a brazing layer.

3. The bearing bushing with high stability according to claim 1, characterized in that: The welding thickness of the welding layer protruding from the tile base layer and the metal wire pad layer is in the range of 0.3 to 0.5 mm.

4. The bearing bushing with high stability according to claim 1, characterized in that: The total thickness of the plastic pressing surface composed of the modified polytetrafluoroethylene layer and the resin layer ranges from 9 to 11 mm.

5. The bearing bushing with high stability according to claim 4, characterized in that: The ratio of the thickness of the resin layer to the thickness of the modified polytetrafluoroethylene layer is 4:

6.

6. The bearing bushing with high stability according to claim 4, characterized in that: The ratio of the thickness of the modified polytetrafluoroethylene layer to the thickness of the metal wire pad layer is 6:

4.

7. The bearing bushing with high stability according to claim 1, characterized in that: The tile base layer is a steel tile base layer made of steel.

8. The bearing bushing with high stability according to claim 1, characterized in that: The metal wire cushion layer is a copper wire cushion layer composed of copper wires.

9. The bearing bushing with high stability according to claim 8, characterized in that: The copper wire cushion layer is formed by winding and pressing the copper wires.

10. The bearing bushing with high stability according to claim 8, characterized in that: The modified polytetrafluoroethylene layer is pressed onto the inner surface of the copper wire cushion layer by cold pressing.

Images