Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Helicopter main speed reducer oil leak troubleshooting method

A main reducer, helicopter technology, applied in mechanical equipment, engine components, engine sealing and other directions, can solve the problems of increasing the troubleshooting cycle and cost, affecting the company's reputation, etc., to reduce the troubleshooting cost and reduce the troubleshooting cycle. Effect

Active Publication Date: 2014-01-29
HARBIN DONGAN ENGINE GRP
View PDF6 Cites 3 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

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. It is found that the elasticity of the graphite block is not good. 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 installation and te...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com