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Face gear and herringbone-tooth cylindrical gear combined four-way branch transmission mechanism

A technology of cylindrical gear and herringbone gear, which is applied in the field of four-way branch transmission mechanism, can solve the problems of limited use and inability to realize the reversing function, and achieve the effects of weight reduction, compact structure and strong bearing capacity

Inactive Publication Date: 2016-03-09
XIAN TECHNOLOGICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The four-branch gear transmission mechanism described in patent CN201531564U cannot realize the reversing function, and its use is subject to certain restrictions under high-speed, heavy-load and other working conditions

Method used

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  • Face gear and herringbone-tooth cylindrical gear combined four-way branch transmission mechanism
  • Face gear and herringbone-tooth cylindrical gear combined four-way branch transmission mechanism
  • Face gear and herringbone-tooth cylindrical gear combined four-way branch transmission mechanism

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Embodiment Construction

[0019] Below in conjunction with accompanying drawing this design is described in detail:

[0020] Such as figure 1 As shown, the present invention includes a first power input shaft 1, and the first power input shaft 1 is connected to the first helical spur gear 3 through a first overrunning clutch 2; the first helical spur gear 3 is connected to the first upper surface The gear 4a and the second lower gear 4b mesh up and down at the same time; the above-mentioned first helical cylindrical gear 3 adopts radial floating support; the above-mentioned first upper gear 4a is connected to the first herringbone cylindrical gear 8a through the first transmission shaft 5a; the above-mentioned The second lower gear 4b is connected to the second herringbone cylindrical gear 8b through the second transmission shaft 5b; the above-mentioned first herringbone cylindrical gear 8a is connected with the third herringbone cylindrical gear 7a and the fourth herringbone cylindrical gear 7b simult...

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Abstract

The invention relates to a power transmission mechanism of a helicopter, and particularly relates to a face gear and herringbone-tooth cylindrical gear combined four-way branch transmission mechanism. The four-way branch transmission mechanism has the advantages of large transmission ratio, light mass, high reliability, long service life, high bearing capacity and low noise and is mainly applied to a main speed reducer of the helicopter. In the four-way branch transmission mechanism disclosed by the invention, input shafts are used for transmitting power to a helical cylindrical gear by overrun clutches; the helical cylindrical gear floats in the radial direction and is meshed with an upper face gear and a lower face gear so that power branching is realized, the torque transmitted by a gear pair is reduced, and a reversion function is implemented; the upper face gear and the lower face gear are respectively connected with first and second herringbone-tooth cylindrical gears by driving shafts; the first and second herringbone-tooth cylindrical gears float in the radial direction, so that power is uniformly transmitted to third, fourth, fifth and sixth herringbone-tooth cylindrical gears; thus, four-way branching of the power is realized, the power is gathered on a seventh herringbone-tooth cylindrical gear, and the power is transmitted to a main rotor of the helicopter.

Description

technical field [0001] The invention relates to a helicopter power transmission mechanism, in particular to a four-way branch transmission mechanism combined with face gears and herringbone cylindrical gears. Background technique [0002] Helicopter was first used as an advanced offensive weapon, and now it is widely used in many fields such as transportation, emergency rescue and disaster relief, anti-terrorism and anti-riot, air rescue, public security and military equipment, tourism and so on. All developed countries have formulated their own helicopter research plans in different periods, which play an important role that cannot be underestimated for the national economy and national defense construction of each country. The performance of the helicopter depends to a large extent on the performance of the transmission device, and its research and development have received full attention and support. Aviation developed countries and well-known helicopter companies have s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C27/12B64D35/00
CPCB64C27/12B64D35/00
Inventor 董皓方舟赵晓龙刘波张君安
Owner XIAN TECHNOLOGICAL UNIV
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