CN221857328U - Bimetal self-lubricating bearing with internal oil storage groove - Google Patents

Abstract

The utility model discloses a bimetallic self-lubricating dynamic bearing with an internal oil storage groove, which comprises an inner sleeve component and an outer sleeve component sleeved on the inner sleeve component, the inner sleeve component comprises an inner sleeve body, the inner sleeve body comprises a copper sleeve body and a steel sleeve body sleeved on the copper sleeve body, the internal oil storage groove is arranged on the steel sleeve body and the outer sleeve component made of steel or steel alloy, the steel sleeve body and the outer sleeve component are both made of steel, the oil storage groove is arranged on the steel sleeve body and the outer sleeve component, and the lubrication effect of the self-lubricating dynamic bearing is improved while the load-bearing capacity of the self-lubricating dynamic bearing is guaranteed.

Description

A bimetallic self-lubricating movable bearing with internal oil storage groove

Technical Field

The utility model relates to the technical field of transmission, in particular to a bimetallic self-lubricating movable bearing with an internal oil storage groove.

Background Art

Self-lubricating dynamic bearings generally use metal hollow cylindrical sleeve components, which are distributed with a certain number of inlay holes. Solid self-lubricating cylindrical particles are installed in the inlay holes. The solid self-lubricating cylindrical particles contain a large number of micropores for absorbing lubricating oil, and the absorbed lubricating oil plays a lubricating role. However, the amount of lubricating oil absorbed by the solid self-lubricating cylindrical particles is limited, and the absorbed lubricating oil evaporates and loses continuously during the operation of the bearing, which greatly reduces the lubrication effect between the bearing and the rotating shaft, increases the friction resistance, and accelerates the wear between the bearing and the rotating shaft.

To this end, patent application number: 202110566182.9, proposes a maintenance-free self-lubricating dynamic bearing with an internal oil storage groove, including an inner sleeve component and an outer sleeve component, and an oil storage groove is opened between the inner sleeve component and the outer sleeve component. The oil storage groove is used to store lubricating oil to maintain the oil content of the solid self-lubricating cylindrical particles during the operation of the self-lubricating dynamic bearing.

The inner sleeve component of the 202110566182.9 patent is made of copper alloy, and the outer sleeve component is made of copper alloy or steel alloy. Although the lubrication performance of copper alloy is better than that of steel alloy, the mechanical strength of copper alloy is only one-fifth of that of steel alloy. Under heavy load working environment, deformation often occurs and the bearing fails. Furthermore, this patent has an oil storage groove on the joint surface of the inner sleeve component and the outer sleeve component. Although it can improve the lubrication effect between the bearing and the rotating shaft, reduce friction resistance, and reduce wear between the bearing and the rotating shaft, the existence of the oil storage groove greatly reduces the contact area between the inner sleeve component and the outer sleeve component, which further greatly reduces the load-bearing capacity of the sliding bearing.

Therefore, developing a sliding bearing that can improve the lubrication effect between the bearing and the shaft, reduce friction resistance, reduce wear between the bearing and the shaft, and can work under heavy load environments is a technical problem that needs to be solved urgently.

Summary of the invention

The utility model aims to provide a bimetallic self-lubricating dynamic bearing with an internal oil storage groove, wherein the internal oil storage groove is arranged between the outer sleeve component and the inner sleeve component, so that when the internal oil storage groove stores lubricating oil, the lubrication effect between the bearing and the rotating shaft is improved, the inner sleeve body comprises a copper sleeve body and a steel sleeve body sleeved on the copper sleeve body, and the internal oil storage groove is arranged on the steel sleeve body and the steel outer sleeve component, thereby ensuring the load-bearing capacity of the self-lubricating dynamic bearing.

The utility model discloses a bimetallic self-lubricating movable bearing with an internal oil storage groove. The bimetallic self-lubricating movable bearing with an internal oil storage groove comprises an inner sleeve component and an outer sleeve component sleeved on the inner sleeve component, wherein the outer sleeve component is made of steel or steel alloy; the inner sleeve component comprises an inner sleeve body, a plurality of inlay holes arranged on the inner sleeve body, and a plurality of solid self-lubricating cylindrical particles respectively inlaid in the inlay holes; the inner sleeve body comprises a copper sleeve body and a steel sleeve body sleeved on the copper sleeve body; internal oil storage grooves are provided on the steel sleeve body and the outer sleeve component made of steel or steel alloy, wherein the oil storage grooves are connected with the inlay holes, and the oil storage grooves are used to store lubricating oil and transport the lubricating oil to the solid self-lubricating cylindrical particles, wherein the solid self-lubricating cylindrical particles contain a large number of micropores for absorbing the lubricating oil.

Furthermore, the area occupied by the plurality of inlay holes is 10% to 36% of the total surface area of the inner sleeve component.

Furthermore, the oil storage groove is provided on the outer surface of the inner sleeve component, or on the inner surface of the outer sleeve component, or on both the outer surface of the inner sleeve component and the inner surface of the outer sleeve component.

Furthermore, the inner sleeve component is installed in the outer sleeve component by one of interference fit, metal pin fixation, metal key fixation, screw fixation, and welding fixation.

Furthermore, the copper sleeve body is fixed in the steel sleeve body by melting copper and then cooling and solidifying it in the steel sleeve body, or by sintering, or by interference fit, metal pin fixation, metal key fixation, screw fixation, or welding fixation.

Furthermore, the solid self-lubricating cylindrical particles are mounted in the embedding holes by gluing.

Furthermore, the solid self-lubricating cylindrical particles are graphite materials containing a large number of micropores, or powder metallurgy materials containing a large number of micropores.

Furthermore, the copper sleeve body is made of copper alloy, and the steel sleeve body is made of steel or steel alloy.

Furthermore, the outer cover component is provided with an oil filling hole.

Furthermore, the oil storage groove is composed of a plurality of grooves, or is a single groove.

Beneficial effects:

Compared with the prior art, the utility model provides a bimetallic self-lubricating dynamic bearing with an internal oil storage groove, wherein an internal oil storage groove is arranged between an outer sleeve component and an inner sleeve component, so that when the internal oil storage groove stores lubricating oil, the lubrication effect between the bearing and the rotating shaft is improved; on the other hand, the inner sleeve body includes a copper sleeve body and a steel sleeve body sleeved on the copper sleeve body, and the internal oil storage groove is opened on the steel sleeve body and the steel outer sleeve component, thereby ensuring the load-bearing capacity of the self-lubricating dynamic bearing.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of the exploded structure of a bimetallic self-lubricating movable bearing with an internal oil storage groove provided by the utility model.

FIG. 2 is a schematic diagram of the cross-sectional structure of the bimetallic self-lubricating dynamic bearing with an internal oil storage groove of FIG. 1 .

FIG3 is a schematic diagram of the exploded structure of a bimetallic self-lubricating movable bearing with three radial oil storage grooves and internal oil storage grooves provided by the utility model.

FIG. 4 is a schematic diagram of the exploded structure of a bimetallic self-lubricating movable bearing with internal oil storage grooves, in which both inner and outer sleeve components are provided with grooves provided by the utility model.

FIG. 5 is a schematic diagram of the exploded structure of a bimetallic self-lubricating movable bearing with a threaded oil storage groove and an internal oil storage groove provided by the utility model.

Reference numerals:

Inner sleeve component 10, inner sleeve body 11, copper sleeve body 111, steel sleeve body 112, inlay hole 12, cylindrical grain 13, flange rib 11a, radial oil storage groove 15, axial oil storage groove 22, outer sleeve component 20, oil filling hole 21, oil storage groove 30.

DETAILED DESCRIPTION

The specific implementation methods of the present application are further described in detail below. It should be understood that the description of the embodiments of the present application here is not intended to limit the protection scope of the present application.

As shown in Figures 1 to 5, they are schematic diagrams of the structure of a bimetallic self-lubricating movable bearing with an internal oil storage groove provided by the utility model. The bimetallic self-lubricating movable bearing with an internal oil storage groove comprises an inner sleeve component 10, an outer sleeve component 20 sleeved on the inner sleeve component, and at least one oil storage groove 30 opened between the inner sleeve component 10 and the outer sleeve component 20. The bimetallic self-lubricating movable bearing with an internal oil storage groove also includes lubricating oil, etc., and it is installed in the equipment as an independent component according to actual use requirements.

The inner sleeve component 10 is fixedly installed in the outer sleeve component 20 by interference fit, or is fixedly installed in the outer sleeve component 20 by metal pins, or is fixedly installed in the outer sleeve component 20 by metal keys, or is fixedly installed in the outer sleeve component 20 by screws, or is fixedly installed in the outer sleeve component 20 by welding, or is fixedly installed in the outer sleeve component 20 by any of the above-mentioned installation methods.

The inner sleeve component 10 includes an inner sleeve body 11, a plurality of inlay holes 12 arranged on the inner sleeve body 11, and a plurality of solid self-lubricating cylindrical particles 13 respectively inlaid in the inlay holes 12. The inner sleeve body 11 includes a copper sleeve body 111 and a steel sleeve body 112 sleeved on the copper sleeve body. The copper sleeve body 111 is made of copper alloy, and the steel sleeve body 112 is made of steel or steel alloy. The copper sleeve body 111 and the steel sleeve body 112 are hollow cylinders, and their diameter and wall thickness should be determined according to specific use requirements.

Since the melting point of copper is lower than that of steel, as a preferred solution, in this embodiment, the copper sleeve body 111 is solidified in the steel sleeve body 112 by melting copper and then cooling it. The copper sleeve body 111 can also be fixed in the steel sleeve body 112 by sintering, or fixedly installed in the steel sleeve body 112 by interference fit, or fixedly installed in the steel sleeve body 112 by metal pins, or fixedly installed in the steel sleeve body 112 by metal keys, or fixedly installed in the steel sleeve body 112 by screws, or fixedly installed in the steel sleeve body 112 by welding. These installation structures and processes are all existing technologies and will not be repeated here.

The embedding holes 12 are provided on the inner sleeve body 11 and are all through holes, and the area occupied by the embedding holes 12 is 10% to 36% of the total surface area of the inner sleeve body 11 .

The solid self-lubricating cylindrical particles 13 are installed in the corresponding inlay holes 12 by gluing. The solid self-lubricating cylindrical particles 13 can be made of a graphite material containing a large number of micropores, or can be made of a copper-based powder metallurgy material containing a large number of micropores. When the solid self-lubricating cylindrical particles 13 are made of a graphite material, the graphite content is greater than 70%. When the solid self-lubricating cylindrical particles 13 are made of a copper-based powder metallurgy material, the copper content is greater than 40%. The micropores contained in the solid self-lubricating cylindrical particles 13 are used to absorb and store lubricating oil, and the size and number of the micropores can be adjusted by changing the material composition and production process.

In the embodiments of Figures 1 and 2, the inner sleeve body 10 further includes a flange rib 11a disposed at one axial end of the inner sleeve body 11, the flange rib 11a is used to install a self-lubricating dynamic bearing, and the flange rib 11a is an optional structure. The flange rib 11a is a prior art and will not be described in detail here.

The outer sleeve component 20 can be fixedly mounted on the inner sleeve component 10 by interference fit, or fixedly mounted on the inner sleeve component 10 by metal pins, or fixedly mounted on the inner sleeve component 10 by metal keys, or fixedly mounted on the inner sleeve component 10 by screws, or fixedly mounted on the inner sleeve component 10 by welding. These mounting structures and processes are all existing technologies and will not be described in detail here.

The outer cover member 20 can be made of steel or steel alloy. In order to add lubricating oil, an oil filling hole 21 is provided on the outer cover member 20 in this embodiment.

The oil storage groove 30 is arranged on the outer surface of the inner sleeve component 10, or is opened on the inner surface of the outer sleeve component 20, or is opened on the outer surface of the inner sleeve component 10 and the inner surface of the outer sleeve component 20 at the same time. When the oil storage groove 30 is arranged on the outer surface of the inner sleeve component 10, the oil storage groove 30 is only opened on the steel sleeve body 112, and the oil storage groove 30 cannot touch the copper sleeve body 111. As shown in Figure 1, a radial oil storage groove 30 is arranged on the inner cylindrical surface of the outer sleeve component 20, and the radial oil storage groove 30 is connected with all the inlay holes 12, so that the lubricating oil in the oil storage groove 30 can be transported to the inlay holes 12, so that one end of the solid self-lubricating cylindrical particle 13 is immersed in the lubricating oil and absorbed or stored by the solid self-lubricating cylindrical particle 13, so as to achieve the purpose of improving the lubricating ability of the solid self-lubricating cylindrical particle 13. The depth of the oil storage groove 30 can be set to 0.5mm to 4mm, which is determined according to actual needs and process requirements.

The structural schematic diagram shown in FIG3 adopts three radially distributed oil storage grooves 30, and the three oil storage grooves 30 are arranged on the inner cylindrical surface of the outer cover component 20; a plurality of axial oil storage grooves 30 are arranged between the three radially distributed oil storage grooves 30, so that all the oil storage grooves 30 are connected together. Of course, according to actual use requirements and working environment, these oil storage grooves 30 can only be partially connected together.

As shown in FIG. 4 , the oil storage grooves 30 are composed of four radial oil storage grooves 15 arranged on the outer cylindrical surface of the inner sleeve component 10 and four axial oil storage grooves 22 arranged on the inner cylindrical surface of the outer sleeve component 20. Similarly, all the oil storage grooves 30 are connected together.

The oil storage groove 30 shown in Fig. 5 adopts a thread structure. The threaded oil storage groove 30 is arranged on the inner cylindrical surface of the outer cover component 20, and the threaded oil storage grooves 30 are connected together.

Compared with the prior art, the bimetallic self-lubricating dynamic bearing with internal oil storage groove provided by the utility model has an internal oil storage groove 30 disposed between the outer sleeve component 20 and the inner sleeve component 10, and the internal oil storage groove 30 is connected to the inlay hole 12 installed with the solid self-lubricating cylindrical particles 13, so that when the internal oil storage groove 30 stores lubricating oil, it can transport the lubricating oil to the solid self-lubricating cylindrical particles 13, thereby improving the lubrication effect between the bearing and the rotating shaft and reducing the wear between the bearing and the rotating shaft. On the other hand, the internal oil storage groove 30 is provided on the steel sleeve body 112 and the steel outer sleeve component 20, which improves the lubrication effect of the self-lubricating dynamic bearing while ensuring the load-bearing capacity of the self-lubricating dynamic bearing.

Although the present invention has been illustrated and described with respect to preferred embodiments, it should be understood by those skilled in the art that various changes and modifications may be made to the present invention without departing from the scope of the present invention as defined by the claims.

Claims (10)

1. A bimetal self-lubricating sliding bearing with an internal oil storage groove, which is characterized in that: the bimetal self-lubricating bearing with the internal oil storage groove comprises an inner sleeve part and an outer sleeve part sleeved on the inner sleeve part, wherein the outer sleeve part is made of steel or steel alloy; the inner sleeve component comprises an inner sleeve body, a plurality of embedded holes arranged on the inner sleeve body and a plurality of solid self-lubricating cylindrical particles respectively embedded in the embedded holes; the inner sleeve body comprises a copper sleeve body and a steel sleeve body sleeved on the copper sleeve body; and the inner oil storage groove is formed in the steel sleeve body and the outer sleeve part made of steel or steel alloy, and the oil storage groove is communicated with the embedded hole.

2. The bi-metallic self-lubricating bearing with internal oil storage grooves as set forth in claim 1, wherein: the area occupied by the plurality of inlay holes is 10% to 36% of the total surface area of the inner sleeve part.

3. The bi-metallic self-lubricating bearing with internal oil storage grooves as set forth in claim 1, wherein: the oil storage groove is formed in the outer surface of the inner sleeve part, the inner surface of the outer sleeve part or both the outer surface of the inner sleeve part and the inner surface of the outer sleeve part.

4. The bi-metallic self-lubricating bearing with internal oil storage grooves as set forth in claim 1, wherein: the inner sleeve part is arranged in the outer sleeve part in one of interference fit, metal pin fixation, metal key fixation, screw fixation and welding fixation modes.

5. The bi-metallic self-lubricating bearing with internal oil storage grooves as set forth in claim 1, wherein: the copper sleeve body is melted by copper and then cooled and solidified in the steel sleeve body, or is fixed in the steel sleeve body by sintering, or is installed in the steel sleeve body by one of interference fit, metal pin fixation, metal key fixation, screw fixation and welding fixation.

6. The bi-metallic self-lubricating bearing with internal oil storage grooves as set forth in claim 1, wherein: the solid self-lubricating cylindrical particles are adhered and installed in the embedded holes by glue.

7. The bi-metallic self-lubricating bearing with internal oil storage grooves as set forth in claim 1, wherein: the solid self-lubricating cylindrical particles are graphite materials containing micropores or powder metallurgy materials containing micropores.

8. The bi-metallic self-lubricating bearing with internal oil storage grooves as set forth in claim 1, wherein: the copper sleeve body is made of copper alloy, and the steel sleeve body is made of steel or steel alloy.

9. The bi-metallic self-lubricating bearing with internal oil storage grooves as set forth in claim 1, wherein: the outer sleeve member is provided with an oil filler hole.

10. The bi-metallic self-lubricating bearing with internal oil storage grooves as set forth in claim 1, wherein: the oil storage groove is composed of a plurality of grooves or is a single groove.