CN214248014U

CN214248014U - Composite sliding bearing

Info

Publication number: CN214248014U
Application number: CN202120022055.8U
Authority: CN
Inventors: 龙春光; 龙娜; 龙平光; 王轲
Original assignee: Changsha Jingda High Polymer Material Co ltd
Current assignee: Changsha Jingda High Polymer Material Co ltd
Priority date: 2021-01-06
Filing date: 2021-01-06
Publication date: 2021-09-21
Anticipated expiration: 2031-01-06

Abstract

The utility model provides a composite sliding bearing, includes metal base overcoat (1), imbeds endotheca (2) in metal base overcoat (1), endotheca (2) are seted up and are moulded plastics groove (3) with the bar of axial certain contained angle, and polymer self-lubricating material layer (4) are filled in the groove (3) are moulded plastics to the bar. The technical scheme provided by the utility model is that the composite sliding bearing has an inner layer and an outer layer, the outer layer is a metal-based coat (1), and the composite sliding bearing has higher rigidity, bearing capacity and better heat-conducting property; the inner sleeve (2) is a ring formed by alternately arranging a framework material and a high-molecular self-lubricating material, and different materials can be adopted according to use requirements, so that the composite sliding bearing has the characteristics of good self-lubricating property, excellent heat-conducting property, high bearing capacity and the like, and can be applied under the working conditions of medium-high speed heavy load and the like.

Description

Composite sliding bearing

Technical Field

The utility model belongs to the technical field of slide bearing technique and specifically relates to a metal base and wear-resisting macromolecular material composite slide bearing is related to, belongs to slide bearing technical field.

Background

In the fields of mechanical manufacturing, electric power, chemical industry, building materials and the like, metal-based sliding bearings, particularly cast copper alloy sliding bearings (namely commonly known as copper sleeves and copper shoes) are common parts, most of the rotating parts with low speed and heavy load are designed with the sliding bearings as supports for rotary motion, and as the sliding bearings belong to wearing parts, most of equipment is designed with the sliding bearings as wearing parts for protecting the parts, and the parts are discarded and replaced after being used or operated for a period of time or the wearing amount reaches a certain limit, the traditional copper-based sliding bearings are roughly divided into two forms, the first form is pure cast copper alloy, such as ZH62 and ZQSn-6-3; the second is that graphite carbide is embedded on a matrix of the cast copper alloy as a lubricant; the first one has the advantages of simple processing and manufacturing, wide adaptability and the defect of incapability of self-lubricating, and the working must be carried out in an oil state, once a moving part in contact with the surface of the copper lacking oil is easy to fluff and pull skin, the part is scrapped; the second kind of graphite-inlaid sliding bearing is characterized by that on the copper alloy base body the carbonized graphite whose area is about 25-30% is inlaid, said carbonized graphite is a columnar crystal structure made of carbide, its density is low and the molecules are spaced, and the graphite is placed in a vacuum container, and oil is soaked so as to make the molecules be full of oil, and when it is inlaid in the copper alloy base body, it can produce heat and make the volume of graphite expand, and release the oil stored in the gap to obtain self-lubricating action, so that said structure has the advantages of that it can be easily used at low temp. and low speed, and its defect is that when the medium temp. is higher than 200 deg.C, its self-lubricating capacity is obviously insufficient, and the carbonized graphite can be cracked into powder form, and fallen from the base body, and can not meet the service environment under the condition of medium speed or heavy load, and its defect is that even under the low temp. and low speed, the carbonized graphite can be fallen off frequently in the course of use, resulting in a considerable compromise of the self-lubricating action of such bearings.

CN2886176Y discloses a PEEK composite sliding bearing, which has a circular tube with an opening or connected by a lap joint in the circumferential direction, the circular tube is made of steel as a base material, a copper powder layer is sintered on the inner circumferential surface of the base material, and a PEEK material is adhered and sintered on the inner circumferential surface of the copper powder layer. Because part of high polymer materials have poor high temperature resistance and thermal conductivity and poor adhesion with metals, the sliding bearings are limited in heavy-load and high-temperature use occasions.

With the development of mechanical equipment towards high speed, precision and low noise, the requirements on the sliding bearing are higher and higher. Therefore, in the field of application of sliding bearings, it is necessary to develop sliding bearings having higher high temperature resistance and excellent self-lubricating properties.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a technical problem lie in providing a slide bearing that high temperature resistant, thermal stability are good, and self-lubricating performance is excellent.

In order to solve the technical problem, the utility model provides a composite sliding bearing, including the metal base overcoat, the embedding endotheca in the metal base overcoat, the bar groove of moulding plastics that becomes certain contained angle with the axial is seted up to the endotheca, and the polymer self-lubricating material layer is filled the bar inslot of moulding plastics.

As further improved technical scheme, the utility model provides a compound slide bearing, the cross-section of the groove of moulding plastics of bar is outer big little ladder groove or dovetail groove in.

As further improvement technical scheme, the utility model provides a compound slide bearing, the width that the groove was moulded plastics to the bar is 4 ~ 6mm, and the distance is 2 ~ 2.5 times of groove width between groove and the groove.

As a further improvement technical scheme, the utility model provides a composite sliding bearing, the bar is moulded plastics the axis of groove and endotheca and is become 30 ~ 60 degrees contained angles.

As a further improvement technical scheme, the utility model provides a composite sliding bearing, be connected for interference fit between endotheca and the metal base overcoat.

As further improvement technical scheme, the utility model provides a compound slide bearing, the cross-section that the groove was moulded plastics to the bar is both ends width, the middle narrow groove.

The above improvements can be implemented alone or in combination without conflict.

The utility model provides a technical scheme, compound slide bearing has inside and outside two-layer, and the skin is the metal base overcoat, has higher rigidity and bearing capacity, better heat conductivility. The inner sleeve is a ring formed by alternately arranging a framework material and a high-molecular self-lubricating material, and the framework material of the inner sleeve can be made of different materials such as metal and the like according to the use requirement. The composite sliding bearing has the characteristics of good self-lubricating property, excellent heat-conducting property, high bearing capacity and the like, and can be applied under the working conditions of medium-high speed heavy load and the like.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

FIG. 1 is a front view schematic diagram of a composite plain bearing according to an embodiment;

FIG. 2 is a schematic cross-sectional view of a composite plain bearing according to an embodiment;

FIG. 3 is an expanded view of an inner sleeve of the composite plain bearing of the embodiment;

FIG. 4 is a schematic view of the structure of FIG. 3 taken along line A-A;

FIG. 5 is a schematic view of a strip-shaped injection molded groove of an embodiment of a composite plain bearing;

FIG. 6 is a schematic view of the configuration of two injection molded grooves of an embodiment of a composite plain bearing.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

The composite sliding bearing shown in fig. 1 to 3 comprises a metal base outer sleeve 1 and an inner sleeve 2 embedded in the metal base outer sleeve 1, wherein the inner sleeve 2 is provided with a strip-shaped injection molding groove 3 forming a certain included angle with the axial direction, and a high polymer self-lubricating material layer 4 is filled in the strip-shaped injection molding groove 3.

The composite sliding bearing has an inner layer and an outer layer, wherein the outer layer is a metal-based outer sleeve 1, such as a steel sleeve, and has higher rigidity, bearing capacity and better heat-conducting property. The inner sleeve 2 can be a ring formed by alternately arranging functional materials with high bearing pressure (such as low-hardness steel), good insulating property (such as ceramic) or good heat conductivity (such as copper) and a high-molecular self-lubricating material. At present, there are many materials available in the polymer self-lubricating material market, such as polyoxymethylene, polyetheretherketone, polyphenylene sulfide, polytetrafluoroethylene, ultra-high molecular weight polyethylene, etc., or two or more of them, and the modified materials using them as the matrix, which have low friction coefficient and good self-lubricating property, the utility model discloses do not relate to improving it. The framework material of the inner sleeve can be made of different materials according to the use requirement, has the characteristics of good self-lubricating property, excellent heat-conducting property, high bearing capacity and the like, and can be applied under the working conditions of medium-high speed heavy load and the like.

As shown in fig. 4 and 5, the section of the strip-shaped injection molding groove 3 is a stepped groove or a trapezoidal groove with a large outer part and a small inner part. As shown in fig. 6, the cross section of the strip-shaped injection molding groove 3 is a groove with two wide ends and a narrow middle part. When the adhesive force between the selected high-molecular self-lubricating material and the framework material of the inner sleeve 2 is low, the strip-shaped injection molding groove 3 with the structure can prevent the high-molecular self-lubricating material layer 4 from falling off.

In the preferred embodiment, the width of the strip-shaped injection molding groove 3 is 4-6 mm, and the distance between the grooves is 2-2.5 times of the width of the groove; the strip-shaped injection molding groove 3 and the axis of the inner sleeve 2 form an included angle of 30-60 degrees. By adopting the structure, the high-molecular self-lubricating material and the framework material of the inner sleeve 2 are alternately arranged, and the sliding bearing with excellent self-lubricating property and heat-conducting property and high bearing capacity can be prepared.

In the preferred embodiment, the inner sleeve 2 is connected with the metal base outer sleeve 1 in an interference fit manner. The inner sleeve 2 and the metal base outer sleeve 1 can be tightly combined.

The present invention is not limited to the above preferred embodiments, and various changes and modifications can be made within the spirit of the present invention defined by the claims and the description, and the same technical problems can be solved and the intended technical effects can be obtained, so that the description thereof is not repeated. All solutions which can be directly or conceivably obtained by a person skilled in the art from the disclosure of the present invention also belong to the scope of protection of the present invention, as long as they are within the spirit of the present invention as defined by the appended claims.

Claims

1. The utility model provides a composite sliding bearing, includes metal base overcoat (1), embedding endotheca (2) in metal base overcoat (1), its characterized in that, endotheca (2) are seted up and are moulded plastics groove (3) with the bar of axial certain contained angle, and polymer self-lubricating material layer (4) are filled in the groove (3) are moulded plastics to the bar.

2. A composite sliding bearing according to claim 1, characterized in that the cross-section of the strip-shaped injection-molded groove (3) is a stepped or trapezoidal groove with a large outside and a small inside.

3. The composite plain bearing according to claim 1 or 2, characterized in that the strip-shaped injection molding groove (3) has a width of 4 to 6mm and a distance between grooves is 2 to 2.5 times the groove width.

4. The composite plain bearing according to claim 1, characterized in that the strip-shaped injection molding groove (3) forms an angle of 30 to 60 degrees with the axis of the inner sleeve (2).

5. A composite plain bearing according to claim 1, characterized in that the inner sleeve (2) is connected to the metal-based outer sleeve (1) by interference fit.

6. A composite sliding bearing according to claim 1, characterized in that the strip-shaped injection-molded groove (3) has a cross-section of a groove which is wide at both ends and narrow in the middle.