Compressor bearing liner

A technology for compressors and bearing bushes, applied in the field of bearing bushes, can solve the problems of large and heavy products, and achieve the effects of small size, good friction compatibility and good embedding.

Inactive Publication Date: 2009-06-03
SHANGHAI DALONG MACHINE FACTORY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, most of the existing compressor bearings are made of steel-based materials, and Babbitt alloy is provided on the friction surface of the steel-based materials. If the bearings of this material need to meet the corresponding technical requirements, the volume of the produced products is often very large. Large, making it very bulky to install on the device

Method used

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  • Compressor bearing liner

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Embodiment Construction

[0011] The structure of the compressor bearing bush according to the present invention can be seen in the accompanying drawings, including the body 1 and the coating on the surface of the body, wherein the thickness of the coating 2 on the inner wall surface of the bearing bush body is greater than that on the inner wall of the bearing bush body. Coating 3 on the surface of other parts.

[0012] The composition of the body includes 5.5%-7% tin, 0.7%-1.3% copper, 0.7%-1.3% nickel, 0.5%-0.9% silicon, 0.1%-0.5% magnesium, and the rest is aluminum. The present invention adopts aluminum-based material as the body of the bearing bush. Aluminum has higher mechanical properties, thermal conductivity and good corrosion resistance. Compared with traditional steel-based Babbitt alloy materials, aluminum-based materials are harder, so they are used as For bearing pads, under the condition of meeting the same technical requirements, the volume of bearing pads made of aluminum-based materia...

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Abstract

The invention discloses a compressor bearing, comprising body and surface coating, characterized in that components of body comprise 5.5%-7% of stannum, 0.7%-1.3% of copper, 0.7%-1.3 % of nickel, 0.5%-0.9% of silicon, 0.5%-0.9% of magnesium and other of aluminum. The coating layer comprises lead and stannum. The invention makes bearing is provided with higher anti-fatigue intensity, good friction compatibility, good compliance, good embeddability, good corrosion resistance, higher loading capability and melting point, and lower linear expansion coefficient by adopting aluminum matrix alloy and additive multiple elements. Under the precondition that corresponding technology demand is achieved, the cubage is smaller.

Description

technical field [0001] The invention relates to a bearing bush, in particular to a bearing bush for a compressor. Background technique [0002] During the working process of the compressor, the bearing bush bears a large dynamic load—the resultant force of gas explosion pressure, reciprocating mass and rotary mass inertial force, and the magnitude and direction of the resultant force change with the rotation angle of the crankshaft. The gas explosion pressure accounts for a large proportion of the dynamic load on the connecting rod bearing bush. For the main shaft, the inertial force of the rotating mass accounts for a large proportion. In addition, the bearing bush also bears a constant static load. When the bearing bush is installed in the bearing housing, static compressive stress is generated due to interference, and thermal expansion occurs during operation, and the compressive stress is very large. If a multi-layer metal bearing structure is used, due to the differen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C33/12F04B39/00F04C29/00
Inventor 赵为民童松青
Owner SHANGHAI DALONG MACHINE FACTORY CO LTD
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