CN2667233Y

CN2667233Y - Self-lubricating dry film joint bearing

Info

Publication number: CN2667233Y
Application number: CN 200420002127
Authority: CN
Inventors: 金成文; 王凯
Original assignee: DALIAN FANGYUAN COMPOSITE MATERIAL BEARING Co Ltd
Current assignee: DALIAN FANGYUAN COMPOSITE MATERIAL BEARING Co Ltd
Priority date: 2004-01-17
Filing date: 2004-01-17
Publication date: 2004-12-29
Anticipated expiration: 2014-01-17

Abstract

The utility model relates to a joint bearing which pertains to a self-lubrication dry film joint bearing and can be applied in fields as hydraulic radial gate, plane gate, metallurgical equipment, oil field mechanics, lifting and transporting machinery, equipment mechanics, etc. The structure of utility model consists of a bearing outer ring, a bearing inner ring and a sealing ring; the sealing ring is arranged at the left and right sides of bearing outer ring, and touched with the bearing inner ring; a group of lubrication groove is provided at the center of bearing outer ring, each groove is embedded the solid lubricant inside, and each lubrication dry film is arranged on the inner sphere of bearing outer ring. The utility model can lower the static friction coefficient on the working face of bearing, reduce the differential value of dynamic and static friction coefficient, avoid the creeping phenomenon in running starting stage, lower the friction degree, and the solid lubricant as the lubricated medium in working procedure can continuously supplement into the two working surfaces, which reduces the friction of bearing and prolongs the life time of bearing.

Description

Selflubricating dry film joint shaft bearing

Technical field

The joint shaft bearing that the utility model relates to belongs to a kind of selflubricating dry film joint shaft bearing, can be applicable to fields such as water conservancy project gates of segmental shape, plane gate, metallurgical equipment, oilfield machinery, hoisting and conveying machinery and equipment.

Background technique

At present in the applied field of joint shaft bearing, because the inside and outside circle of its bearing adopts Bearing Steel, the ball plating hard chromium on surface, the friction factor that exists operative minor is bigger, dynamic and static friction factor differ problem such as bigger, and starting moment wearing and tearing are more serious, occur creeping phenomenon easily, influence bearing working life, so need grease lubrication at work.So a kind of novel selflubricating dry film joint shaft bearing of development is very necessary to overcome existing problem.

Summary of the invention

It is simple that the purpose of this utility model provides a kind of processing technology, friction, the reliable and stable a kind of selflubricating dry film joint shaft bearing of polishing machine.It comprises bearing outer ring, bearing inner race, seal ring, and bearing outer ring adopts high-strength alloy brass as matrix, and working surface is evenly distributed with solid lubricant, working surface spraying one deck pre-lubrication dry film of inner ring.

Selflubricating dry film joint shaft bearing described in the utility model, its structure is made up of bearing outer ring, bearing inner race and seal ring; Seal ring is installed on the both sides of bearing outer ring, and contacts with the bearing inner ring; The working surface of bearing outer ring has the oiling agent hole, is all inlaying solid lubricant in each hole, has the pre-lubrication dry film on the outer spherical surface of bearing inner race.Pre-lubrication dry film on the outer spherical surface of joint shaft bearing inner ring described in the utility model can spray; The thickness of pre-lubrication dry film is 0.02-0.04mm.Joint shaft bearing working surface oiling agent described in the utility model accounts for about 20% of work area.The seal ring of bearing described in the utility model can be O shape sealing rubber ring.

The utility model is compared with background technique, because the inner ring working surface has one deck pre-lubrication film, can reduce the static friction coefficient of this bearing working pair, has reduced the difference of dynamic and static friction factor, and the creeping phenomenon the start up period of having avoided running-in has reduced the degree of wear.Working surface abundant and equally distributed solid lubricant in outer ring also can constantly add in operative minor two surfaces as the lubricant medium in the working procedure, has reduced the wearing and tearing of bearing, has prolonged the working life of bearing.

Description of drawings

Accompanying drawing of the present utility model is a selflubricating dry film joint shaft bearing structural representation.

Among the figure: 1, bearing outer ring 2, bearing inner race 3, seal ring

4, pre-lubrication dry film 5, solid lubricant 6, oiling agent hole

Embodiment

The outer ring of joint shaft bearing, the machining of inner ring are with traditional processing method, and the outer ring working surface bores some blind holes, and the timeliness pump-down process is made in the inlaid solid lubrication agent, and the area of tesserae accounts for 20% of working surface.Sphere spraying one deck pre-lubrication dry film to bearing inner race, concrete enforcement is as follows: the thickness of pre-lubrication dry film is 0.02-0.04mm, bearing inner race 2 is positioned in the high-temperature heater, be heated to 385 ℃, remove its surperficial other materials such as grease,, the bearing inner race working surface is carried out roughening treatment with blasting method in order further to strengthen the adhesive ability of coating (pre-lubrication dry film 4), and use pressurized air to dash and blow the surface, the lip-deep impurity full scale clearance of bearing inner race is clean; Use the spraying of modified ptfe flexible coating material, suitably its solution is shaken all before the use, spray gun with general expression bore 0.8-1.2mm, use pressurized air, ejection pressure should be 0.15-0.3MPa, keep the suitable distance between spray gun and two surfaces, thereby obtain comparatively ideal coating, coating should filter the back through 150 order Stainless Steel Wires and use.The bearing outer ring that spraying is finished is placed in the infra-red drying stove, heating is 30 minutes about 90 ℃, bearing inner race with cold drying heated 30 minutes in 280 ℃ High Temperature Furnaces again, the bearing outer ring water of sintering plasticizing was cooled off fast obtain coating preferably.Two working surfaces are studded with the semi outer rings 1 of solid lubricant 5, and seal ring 3 and inner ring 2 combine and assemble that are coated with pre-lubrication dry film 4 get final product.

Claims

1, a kind of selflubricating dry film joint shaft bearing is characterized in that by bearing outer ring (1) bearing inner race (2) and seal ring (3) are formed; Seal ring (3) is installed on the both sides of bearing outer ring (1), and contacts with bearing inner ring (2); The working surface of bearing outer ring (1) has oiling agent hole (6), is all inlaying solid lubricant (5) in each hole, has on the outer spherical surface of bearing inner race (2) from pre-lubrication dry film (4).

2, selflubricating dry film joint shaft bearing according to claim 1 is characterized in that the pre-lubrication dry film (4) on the outer spherical surface of bearing inner race (2) can spray; The thickness of pre-lubrication dry film (4) is 0.02-0.04mm.

3, selflubricating dry film joint shaft bearing according to claim 1 is characterized in that working surface oiling agent (5) accounts for about 20% of work area.

4, selflubricating dry film joint shaft bearing according to claim 1 is characterized in that seal ring (3) can be O shape sealing rubber ring.