Forced lubricating oil duct pressure stabilizing mechanism

Abstract

According to the forced lubricating oil way pressure stabilizing mechanism, the overflow valve structure is arranged in the second inner cavity with the large inner diameter in the variable-diameter inner cavity, namely, the elastic component is adopted for supporting the ball body located at the joint of the first inner diameter and the second inner diameter, and a plugging structure with the first inner diameter changing along with pressure in the variable-diameter inner cavity area is achieved; gearbox faults caused by unstable oil duct pressure due to the wide fluctuation range of the input rotating speed of the mechanical oil pump can be effectively reduced, and the mechanical oil pump is compact in overall structure, simple in arrangement and capable of being applied to a transmission with a forced lubrication mode. The method is high in applicability and wide in universal range.

Description

technical field [0001] The invention belongs to the field of gearbox manufacturing, and particularly relates to a pressure stabilization mechanism for a forced lubricating oil passage. Background technique [0002] Abnormal wear failure caused by insufficient lubrication of gearbox gears, bearings, etc. is a relatively common failure form. When the rotational speed of the forced lubricating oil pump is unstable, the pump oil pressure fluctuates, which may easily lead to unstable oil seal lip pressure near the bearing. , resulting in oil leakage. [0003] The most common solution in the current state of the art is to select a gear with a relatively low speed as the input drive gear of the forced lubricating oil pump, and the pump oil volume is small, which brings the risk of insufficient lubrication; choose an oil seal with stronger sealing performance, However, an excessive amount of oil seal lip interference will lead to excessive force of the oil seal to hold the shaft, a...

AI Technical Summary

Problems solved by technology

[0002] Abnormal wear failure caused by insufficient lubrication of transmission gears and bearings is a relatively common failure form. When the speed of the forced lubricating oil pump is unstable, the pressure of the pump oil will fluctuate, which will easily lead to unstable pressure on the sealing lip of the oil seal near the bearing. , resulting in oil leakage

[0003] The most common solution in the current prior art is to select a gear with a relatively low rotational speed as the input drive gear of the forced lubricating oil pump. The amount of pumped oil is less, which brings the risk of insufficient lubrication; select an oil seal with stronger sealing performance, However, excessive oil seal lip interference will lead to excessive shaft holding force of the oil seal, abnormal heating during operation, and early failure of the oil seal and abnormal wear of the shaft.

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