CN2240070Y

CN2240070Y - Sliding bearing

Info

Publication number: CN2240070Y
Application number: CN 95226625
Authority: CN
Inventors: 张长林
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-11-29
Filing date: 1995-11-29
Publication date: 1996-11-13
Anticipated expiration: 2005-11-29

Abstract

The utility model relates to a sliding bearing. A supporting seat and a bearing shell are the integration. The utility model is in a combined structure composed of the outer layer of a copper alloy cast layer, the middle layer of a wave-shaped infiltration layer and the outer layer of a cast iron layer. Because the utility model is formed by direct cast through mother metals of a copper alloy supporting seat, high accuracy processing faces are reduced. Because the combined structure of the utility model overcomes adverse effects caused by assembly in the prior art, the copper alloy can be saved more than 70%. After the utility model is used for a long time and is oversized, the old sliding bearing can be used as a new product through processing after cast with a layer of copper alloy.

Description

Sliding bearing

The utility model is a kind of sliding bearing.

No matter existing sliding bearing is integrated type, opposite opened, the formula that rolls all is made up of supporting base and bearing shell, supporting base and bearing shell are two body structures.Bearing shell integral body is Cu alloy material, the inside and outside two-layer high fine finishing that all needs of bearing shell, and interior external diameter minimum average B configuration allowance is 6～10mm; The supporting base internal layer still needs high fine finishing.Supporting base and the easy generation of bearing shell assembling bearing shell cooperate inappropriate with the supporting base hole, be prone to slight slippage, cause a watt back of the body wearing and tearing; Matching loose is unfavorable to conducting heat, and makes the bearing shell surface temperature too high, causes the top layer oxidation and peels off.This bearing is after long-term the use; When the appearance transmission accuracy was overproof, bearing shell was only scrapped.Therefore this kind bearing requirement on machining accuracy height not only, and the Cuprum alloy consumption is also many.

The purpose of this utility model is exactly a kind of novel sliding bearing of design, reduces high-precision working surface, and reduces Cu alloy material.

The utility model is achieved by the following scheme its goal of the invention.

The supporting base of sliding bearing of the present utility model and bearing shell are one, it be interior for the Cuprum alloy cast layer, in be the corrugated permeable formation of Cuprum alloy, the composite structure that constitutes for steel or cast iron layer outward.

How many composite structures of sliding bearing of the present utility model considers the molten steel float-amount, and its internal layer Cuprum alloy thickness is 1～3mm.

Sliding bearing of the present utility model utilizes supporting base to be mother metal direct pouring, and existing sliding bearing is except the supporting base cast molding, and bearing shell is also wanted die casting blank or casting blank.Supporting base mother metal internal layer of the present utility model only needs roughing to get final product, water casting copper alloys after, only need internal floor height precision processing.And the supporting base internal layer of existing sliding bearing needs high-precision processing, the inside and outside two-layer high-precision processing that all needs of bearing shell.Therefore sliding bearing of the present utility model has reduced the high-precision processing face.Sliding bearing of the present utility model makes that supporting base and bearing shell are compound to be one, does not exist because the harmful effect that assembling produces, does not promptly have slippage, watt carries on the back and to wear and tear and oxidation.Sliding bearing of the present utility model is after long-term use is overproof, and the layer of copper alloy of only need casting again is equal to new product and uses after processing.Existing bearing shell is thick to be generally about 10mm, all is Cu alloy material; The casting copper alloys that water of innermost layer of the present utility model have only 1～3mm, Cuprum alloy consumption when adding infiltration, and for isometrical isometric sliding bearing, the materials of Cuprum alloy will be saved more than 70%.Permeable formation of the present utility model has increased the adhesive strength of internal and external layer, controls the shrinkage of outer steel or cast iron, prevents that both peel off inside and outside the casting back.

Description of drawings of the present utility model is as follows.

Fig. 1 is the half sectional view of sliding bearing of the present utility model.

Fig. 2 is the A-A sectional view of Fig. 1.

Below in conjunction with description of drawings preferable embodiment of the present utility model.

Referring to Fig. 1, Fig. 2, the sliding bearing of the present embodiment is a Φ 100mm opposite opened.With nut 3, bolt 4 upper and lower supporting base 2 and 1 is linked together, the Cuprum alloy thickness 2.5mm that the internal diameter that upper and lower supporting base 2 and 1 its outer endoporus aperture for the steel structure formation are bearing is added internal layer 7 gets final product.The middle level 6 of supporting base is the corrugated permeable formation of Cuprum alloy, the summit 9 of ripple infiltrates in the steel of supporting base skin 5, trough 8 is bordering on the outer 5 steel bore areas of supporting base, and the internal layer 7 of supporting base is the thick Cuprum alloy divided ring of 2.5mm that constitutes one with middle level 6, outer 5.

The manufacture method of the present embodiment is:

Be parent with the outer steel seat of the supporting base after connecting at first, the parent endoporus utilizes Cuprum alloy and mother metal interpolar electric arc (the parent material connects negative pole, Cuprum alloy connects positive pole) that Cuprum alloy is permeated by force in about the nearly surperficial 4.5mm of parent material by 6 bisectrixs.Then the workpiece of infiltration is by force pressed 450～600 ℃ of copper and the preceding preheating temperatures of steel welding, after the heating, be installed on the centrifugal casting machine in the stove, with institute's melting copper alloy injection, it is even to utilize centrifugal force to look for voluntarily, promptly forms the composite sliding bearing blank of steel and Cuprum alloy.After carrying out machining by Φ 100mm at last, ring Cuprum alloy cast layer is cut into opposite opened, be the sliding bearing finished product of the present embodiment.

Claims

1, a kind of sliding bearing contains supporting base and bearing shell, it is characterized in that supporting base and bearing shell are one, it be interior for Cuprum alloy cast layer (7), in be the corrugated permeable formation of Cuprum alloy (6), the composite structure that constitutes for steel or cast iron layer (5) outward.

2, sliding bearing according to claim 2, the Cuprum alloy thickness that it is characterized in that composite structure internal layer (7) is 1～3mm.