Lubricating structure of thrust plate of engine crankshaft

Abstract

The invention discloses a lubricating structure of a thrust plate of an engine crankshaft. The lubricating structure of the thrust plate of the engine crankshaft comprises a lower bearing bush oil groove, a thrust shaft cover oil groove and a thrust shaft cover oil duct, wherein the lower bearing bush oil groove is formed in the fit surface of a lower bearing bush and an upper bearing bush, and one end of the lower bearing bush oil groove is communicated with an intermediate groove of the upper bearing bush; the thrust shaft cover oil groove is formed in the fit surface of a thrust shaft cover and an air cylinder body, and the inner end of the thrust shaft cover oil groove is communicated with the other end of the lower bearing bush oil groove, and the outer end of the thrust shaft cover is communicated with a shaft cover bolt hole; the thrust bearing cover oil duct comprises a main oil duct, and branch oil ducts which are crossed, wherein one end of the main oil duct is communicated with the shaft cover bolt hole, and two openings in the outer ends of the branch oil ducts are formed in the thrust plate installation parts at two sides of the thrust shaft cover. The lubricating structure of the thrust plate of the engine crankshaft is simple and reasonable in structure, solves the severe abrasion caused by poor lubrication of the thrust plate by adopting an oil storage and forced lubrication scheme, has a good lubrication effect, can reduce the abrasion of the thrust plate, and prevents the axial motion of the crankshaft.

Description

technical field [0001] The invention relates to the field of crankshaft thrust plates, in particular to an engine crankshaft thrust plate lubricating structure. Background technique [0002] The function of the crankshaft thrust plate is mainly to prevent the axial movement of the crankshaft and ensure the smooth operation of the connecting rod and piston. If the crankshaft thrust plate is seriously worn, it will easily lead to the axial movement of the crankshaft. Therefore, it is very important to reduce the wear of the thrust plate. At present, thrust plates made of wear-resistant materials and engine oil overflowing from the periphery of the lubricated thrust bearing bush are generally used to reduce wear and tear. [0003] However, in the case of frequent start and stop of the vehicle, the effect of reducing the wear of the thrust plate by using the thrust plate of wear-resistant material and the oil overflowing from the periphery of the lubricated thrust bearing bush ...

AI Technical Summary

Problems solved by technology

[0003] However, in the case of frequent start and stop of the vehicle, the effect of reducing the wear of the thrust plate by using the thrust plate made of wear-resistant material and the oil overflowing from the periphery of the lubricated thrust bearing bush is very limited.

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