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Troubleshooting method for oil leakage of main reducer of helicopter

A main reducer and helicopter technology, applied in mechanical equipment, engine components, engine sealing, etc., can solve the problems of increasing troubleshooting cycle and cost, affecting company reputation, etc., and achieve the goal of reducing troubleshooting cost and reducing troubleshooting cycle Effect

Active Publication Date: 2015-12-02
HARBIN DONGAN ENGINE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only increases the troubleshooting cycle and costs, but also seriously affects the company's reputation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0026] During the ground test of the main reducer of a certain type of helicopter, the input end of the right engine leaked oil, and the troubleshooting steps for the oil leakage were as follows:

[0027] (1) Wipe off the lubricating oil at the oil leakage site, and increase the test run time by 30 minutes. If the oil leakage continues to exist, start troubleshooting;

[0028] (2) According to the oil leakage location of the main reduction, it is determined that it is the oil leakage of the dynamic seal;

[0029] (3) Observe the dynamic sealing structure of the oil leakage location, and confirm that it is a graphite sealing bowl seal;

[0030] (4) Check whether the elasticity of the graphite block at the sealing part is good, and it is found that the elasticity of the graphite block is not good, and it cannot be restored to its original state by the elasticity after being pressed lightly by hand, and the graphite sealing ring should be replaced;

[0031] (5) After installatio...

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Abstract

The invention relates to a helicopter main speed reducer oil leak troubleshooting method. The method includes that an oil leak position is determined, state of a sealing member is examined, an oil leak mode of a main speed reducer is determined, and then oil leak reasons can be quickly and conveniently found. The helicopter main speed reducer oil leak troubleshooting method has the advantages of simplicity and high efficiency, oil leak fault reasons of the main speed reducer of a helicopter can be quickly and effectively found, and troubleshooting period and cost are reduced.

Description

technical field [0001] The invention relates to a method for troubleshooting oil leakage of a main reducer of a helicopter. Background technique [0002] my country's helicopter development has achieved certain results after decades of development. With the increase in the number and application of helicopters, oil leakage failures of helicopter main reducers tend to increase during bench testing and field use. There are two types of sealing methods for the helicopter main reducer: static sealing and dynamic sealing. Among them, the dynamic seal includes leather cup, graphite seal bowl and screw seal, and the static seal includes O-ring seal and thread seal. According to statistics, from January 2004 to the present, a total of 138 oil leakage failures have occurred in the main reducer of a certain type of helicopter. At present, there are no specific steps and methods for troubleshooting due to oil leakage of the main reducer, and we can only rely on experience for trouble...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/16F16H57/029
Inventor 欧阳可平徐海英于振林冯磊秦正荣李宏那国雨徐晶莹宁涛徐秀波周丽芳李远
Owner HARBIN DONGAN ENGINE GRP
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