CN2692409Y

CN2692409Y - Shaft bushing

Info

Publication number: CN2692409Y
Application number: CN 03225339
Authority: CN
Inventors: 刘会学
Original assignee: Individual
Current assignee: GUANGZHOU ANDA PRECISION INDUSTRY CO LTD
Priority date: 2003-04-22
Filing date: 2003-04-22
Publication date: 2005-04-13
Anticipated expiration: 2013-04-22

Abstract

The utility model provides a shaft bushing, comprising a steel backing (1), a basal lamina (2), a nickel grid (4) and an antifriction layer (3). The basal lamina (2) is arranged on the steel backing (1), the surface of the basal lamina (2) is bored into flutes (5) which are mutually arranged in spacing, and a shoulder (6) is arranged between the two contiguous flutes (5). The utility model is characterized in that a layer of nickel grid (4) is plated or coated on the flute (5) and the shoulder (6), and the nickel grid (4) is provided with a concavo-convex shape; a layer of antifriction layer (3) is plated or vacuum coated on the nickel grid (4), and the antifriction layer (3) is provided with the concavo-convex shape. The shaft bushing has the advantages of good oil storage performance, good primary adaptability, seizure resistance and embedability, low cost and simple manufacture, which can be used on the car engine or the diesel engine.

Description

Bearing shell

Technical field

The utility model relates to bearing shell.

Background technique

The bearing shell of motor car engine or use for diesel engine, its base layer are usually with aluminum alloy or to have plated be the copper lead alloy material of the material of main component with lead.Recent years, the performance of motor car engine obviously improves, as developing bigger output and rotating speed faster.So, need sliding bearing that outstanding performance is arranged aspect sliding capability, particularly aspect initial compliance and seizure resistance, and the self-enrichment aspect.The applicant has applied for that to Patent Office of the People's Republic of China application number is 03113799.7 patent of invention " High-Intensity Slotted Bearing " on February 25th, 2003, this application has proposed a kind of like this structure: a kind of High-Intensity Slotted Bearing, comprise the base layer that steel backing and copper base alloy or acieral are made, base layer is arranged on the steel backing, have groove on the base layer, base layer between two adjacent grooves partly is a convex shoulder, the groove inwall plates one deck nickel grid, be coated with the interior quaternary alloy lubriation material of filling of groove of nickel grid, lubriation material in the groove flushes with convex shoulder, plates the anti-corrosion wear-reduced layer of one deck at lubriation material and convex shoulder.Because the antifriction layer is flat, self-enrichment is relatively poor, and when primitive axis and bearing shell break-in, compliance, seizure resistance and embedding Tibetan property remains to be improved more, and cost is higher, and processing is complicated.

Summary of the invention

Technical problem to be solved in the utility model: provide a kind of and have good, the initial compliance of self-enrichment, seizure resistance and embedding to hide property good, cost is low, process simple bearing shell.

The technical scheme in the invention for solving the technical problem: a kind of bearing shell, form by steel backing, base layer, nickel grid, antifriction layer, described base layer is arranged on the steel backing, the groove that base layer surface boring becomes the space to arrange, between two adjacent grooves are convex shoulders, plate one deck nickel grid on groove and convex shoulder, and the nickel grid are concave-convex shape, plate on the nickel grid or airless spraying one deck antifriction layer, the antifriction layer is concave-convex shape.

The axial cross section of the groove of described base layer is circular arc, down narrowly in the wide trapezoidal or del any.

Described antifriction layer can be any alloy or the metal in Pb-Sn-Cu-In alloy, Pb-Sn-Cu-Ag alloy, Pb-Sn-Cu-Sb alloy, lead-tin-copper alloy, slicker solder indium alloy, terne metal, plumbous indium alloy, mock silver, indium stannum alloy, tin, silver, the indium.

The beneficial effects of the utility model:

1. the surperficial concave-convex surface of antifriction layer, but oil storage in depression, the utility model bearing shell has good self-enrichment.

2. the surface of antifriction layer is concavo-convex shoulder at interval, has superior compliance, seizure resistance and embedding to hide property during the initial break-in of bearing shell and axle tool.

3. the antifriction laminar surface presents groove and convex shoulder at interval, use a period of time after, the antifriction layer polishes, its structure and application number be 03113799.7 patent of invention " High-Intensity Slotted Bearing,, so structural similarity is longer service life of the present utility model.

4. owing to bore groove on the base layer surface, nickel grid Direct Electroplating or be sprayed on the base layer surface, antifriction layer Direct Electroplating or airless spraying are on nickel-barrier layer, and the utility model manufacturing process is simple, and cost is low.

Description of drawings

Fig. 1 is the axial cross section cut-away view of a mode of execution of the utility model;

Fig. 2 is the axial cross section cut-away view of another mode of execution of the utility model;

Fig. 3 is the axial cross section cut-away view of the 3rd kind of mode of execution of the present utility model.

Among the figure: 1-steel backing, 2-base layer, 4-nickel grid, 3-antifriction layer, 5-groove, 6-convex shoulder

Embodiment

Below in conjunction with the drawings and specific embodiments explanation the utility model.

As Figure 1-3, a kind of bearing shell, form by steel backing 1, base layer 2, nickel grid 4, antifriction layer 3, described base layer 2 is arranged on the steel backing 1, and groove 5, two 5 of the adjacent grooves that base layer 2 surperficial borings become the space to arrange are convex shoulders 6, on groove 5 and convex shoulder 6, plate one deck nickel grid 4, nickel grid 4 are concave-convex shape, plate one deck antifriction layer 3 on the nickel grid 4, and antifriction layer 3 is concave-convex shape.As Fig. 1 is a kind of mode of execution of the present utility model, the axial cross section of the groove 5 of base layer 2 surperficial borings is a circular arc, as Fig. 2 is another kind of mode of execution of the present utility model, the axial cross section of the groove 5 of base layer 2 surperficial borings is a del, as Fig. 3 is the third mode of execution of the present utility model, the shaft section of the groove 5 of base layer 2 surperficial borings for down narrow wide trapezoidal.

Described base layer 2 can adopt copper base alloy (as copper lead alloy) or acieral, copper base alloy can be used as base layer 2 by the casting or be sintered on the steel backing 1, acieral as base layer 2 by being rolled down on the steel backing 1.

The material of described antifriction layer 3 is any metal or an alloy in Pb-Sn-Cu-In alloy, Pb-Sn-Cu-Ag alloy, Pb-Sn-Cu-Sb alloy, lead-tin-copper alloy, slicker solder indium alloy, terne metal, plumbous indium alloy, mock silver, indium stannum alloy, tin, silver or the indium.

Groove on the described base layer promptly along the circumferential direction extends outward twist.Groove also can be by forming with the concentric circumference of bearing vertical center line.

Claims

1, a kind of bearing shell, form by steel backing (1), base layer (2), nickel grid (4), antifriction layer (3), described base layer (2) is arranged on the steel backing (1), the groove (5) that the surperficial boring of described base layer (2) becomes the space to arrange, be convex shoulder (6) between two adjacent grooves (5), it is characterized in that: on described groove (5) and convex shoulder (6), plate or spray one deck nickel grid (4), nickel grid (4) are concave-convex shape, plate on the nickel grid (4) or airless spraying one deck antifriction layer (3), antifriction layer (3) is concave-convex shape.

2, bearing shell according to claim 1 is characterized in that: the axial cross section of the groove (5) of the surperficial boring of described base layer (2) is a circular arc.

3, bearing shell according to claim 1 is characterized in that: the axial cross section of the groove (5) of the surperficial boring of described base layer (2) for down narrow wide trapezoidal.

4, bearing shell according to claim 1 is characterized in that: the axial cross section of the groove (5) of the surperficial boring of described base layer (2) is a del.