Oil suspension type air cylinder seat bearing structure

Abstract

The invention discloses an oil suspension type air cylinder seat bearing structure. The oil suspension type air cylinder seat bearing structure comprises an air cylinder seat support and a crankshafthole, wherein a crankshaft is arranged in the crankshaft hole; a suspension type bearing structure is formed between the lower end surface of a shaft shoulder of the crankshaft and the upper end surface of the air cylinder seat support; the bearing structure comprises a step groove formed in the upper end surface; an oil groove is formed in the step groove in the axial direction of the air cylinder seat support; engine oil is arranged in the oil groove; a lower bulge is arranged at the position, corresponding to the oil groove, of the lower end surface; a thrust washer is arranged between thelower bulge and the oil groove; and the width of the radial section of the thrust washer is larger than the width of the oil groove. According to the oil suspension type air cylinder seat bearing structure, the lower end surface of the shaft shoulder of the crankshaft is prevented from being in direct contact with the air cylinder seat support, so that the abrasion between the lower end surface ofthe shaft shoulder of the crankshaft and the upper end surface of the air cylinder seat support is reduced, the noise in the operation process of a kinematic pair can be reduced, and the overall noise of a compressor is lower.

Description

Technical field [0001] The invention relates to the technical field of a cylinder seat of a compressor, and in particular to an oil suspension type cylinder seat bearing structure. Background technique [0002] Most of the existing refrigeration compressors use a reciprocating piston mechanism. The piston is driven by a motor through a crankshaft-connecting rod mechanism. It mainly includes a cylinder block, a crankshaft, a piston, and a connecting rod. The cylinder block is provided with a crankshaft hole for the crankshaft. The centerline of the crankshaft hole is vertical, the centerline of the piston cavity and the centerline of the crankshaft hole are perpendicular, the outer surface of the crankshaft and the inner surface of the crankshaft hole are smoothly matched to act as a sliding bearing after finishing, the connecting rod connects the crankshaft and the piston, and the motor rotor is directly set The crankshaft is driven to rotate on the crankshaft, and the piston is ...

AI Technical Summary

Problems solved by technology

[0003] As a result, the cylinder block of the existing large-scale commercial compressor has a large load-bearing structure and a single structure. The crankshaft of the rotating part directly contacts the cylinder seat of the supporting part. During the movement, there is relative friction, which is prone to wear and tear, which greatly affects the strength of the mechanism components. Cause the failure of the mechanism part, the reliability of the compressor cannot be satisfied

[0004] Therefore, the strength of the cylinder block is required to be high, and a thicker cylinder block needs to be purchased to support it, which leads to an increase in the cost of materials used, and cannot effectively cool down the relative moving parts, and the accumulation of heat will easily increase the temperature between the moving pairs. It will also affect the strength of the mechanism and reduce the reliability of the compressor

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