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Main reduction box made of shape memory alloy used for helicopter transmission system

A memory alloy, transmission system technology, applied in transmission parts, mechanical equipment, belts/chains/gears, etc., can solve the problems of the main reducer not working normally, the machine being destroyed, the temperature of the transmission parts rising, etc.

Active Publication Date: 2014-07-02
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the flight performance of the helicopter has a great relationship with the main reducer. If the main reducer is damaged, the helicopter will not be able to fly normally. When the helicopter fails due to various factors during the flight, it cannot supply oil or the gearbox box leaks oil. , the transmission system will soon enter a working state that cannot be fully lubricated or has no lubricating oil (dry running), the temperature of the transmission parts in the main gearbox will rise rapidly and fail, and the main reducer will not work normally, which may cause machine damage. fatal accident

Method used

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  • Main reduction box made of shape memory alloy used for helicopter transmission system
  • Main reduction box made of shape memory alloy used for helicopter transmission system
  • Main reduction box made of shape memory alloy used for helicopter transmission system

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with accompanying drawing.

[0017] Due to the complex structure of the main gearbox in the helicopter, only the parts drawings relevant to the present invention are provided, such as figure 1 (The arrow is the flow direction of lubricating oil under normal working conditions).

[0018] see figure 1 , the shape memory alloy main reduction box for the helicopter transmission system, including the lubricating oil nozzle 10, the spiral bevel gear shaft 11, the oil hole 12, the output bushing 16, the input housing 13, the input spindle 14 and the clutch 15, in the spiral The inner car of the meshing part of bevel gear shaft 11 has the first annular oil storage tank 17, has at least one small hole communicating with the spiral bevel gear shaft 11 and the first annular oil storage tank 17 under the gear of the spiral bevel gear shaft 11. Each aperture is equipped with a first memory alloy check valve 18, p...

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Abstract

The invention discloses a main reduction box made of a shape memory alloy used for a helicopter transmission system. A first annular oil storage tank (17) is arranged in an engaging part of a spiral bevel gear shaft (11). A first shape-memory-alloy check valve (18) is installed on the spiral bevel gear shaft (11). The center of an input mandrel (14) is provided with a first annular oil blocking edge (20) and a second annular oil blocking edge (21), wherein the first annular oil blocking edge (20) and the second annular oil blocking edge (21) form a second annular oil storage tank (22). The end, close to a slide oil nozzle (10), of the second annular oil storage tank (22) is provided with a second shape-memory-alloy check valve (19). According to the main reduction box made of the shape memory alloy, the structure of the main reduction box is mainly improved so that the main reduction box can store lubricating oil in the process of normal operation; when the transmission system loses lubrication, the temperature in the main reduction box arises and reaches the phase-transition temperature of the memory alloy, the memory alloy deforms, and therefore the stored lubricating oil is released to lubricate a spiral bevel gear, a clutch and the like in the main reduction box.

Description

technical field [0001] The invention relates to a gear box, in particular to a shape memory alloy main gear box used in a helicopter transmission system. Background technique [0002] The helicopter transmission system is one of the three key components of the helicopter, and the final reducer is an important part of the helicopter transmission system. Therefore, the flight performance of the helicopter has a great relationship with the main reducer. If the main reducer is damaged, the helicopter will not be able to fly normally. When the helicopter fails due to various factors during the flight, it cannot supply oil or the gearbox box leaks oil. , the transmission system will soon enter a working state that cannot be fully lubricated or has no lubricating oil (dry running), the temperature of the transmission parts in the main gearbox will rise rapidly and fail, and the main reducer will not work normally, which may cause machine damage. fatal accident. Therefore, when th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H57/04
CPCF16H57/0431F16H57/0435F16H57/045F16H57/0456
Inventor 严宏志王祎维叶辉陈新宇赵鹏张诗颖
Owner CENT SOUTH UNIV
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