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Coaxial double-rotor variable-speed transmission device with coaxial face gears capable of dividing and converging twice

A coaxial dual-rotor, variable-speed transmission technology, applied in the direction of gear transmission, transmission, transmission to drive multiple propellers, etc., can solve the limitation of bearing capacity and transmission efficiency, reliability and service life, and integration There are fewer problems in designing products, so as to achieve the effect of compact structure, increased carrying capacity and voyage, and favorable structure

Pending Publication Date: 2020-06-12
XIAN TECHNOLOGICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the main structure of the main reducer of small and medium-sized helicopters is composed of multi-stage gear transmission. Large footprint, limited reliability and service life
So far, there are few integrated design products specifically for the main reducer of small and medium-sized helicopters

Method used

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  • Coaxial double-rotor variable-speed transmission device with coaxial face gears capable of dividing and converging twice
  • Coaxial double-rotor variable-speed transmission device with coaxial face gears capable of dividing and converging twice
  • Coaxial double-rotor variable-speed transmission device with coaxial face gears capable of dividing and converging twice

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A coaxial double-rotor speed change transmission device with a single engine input and a coaxial surface gear that divides and confluences twice, such as figure 1 As shown, it includes a power input part and a power output part; the power input part includes a first power input shaft 1, and the first power input shaft 1 is connected to the first pinion 2; the first pinion 2 is connected to the first The non-orthogonal face gear 3a and the second non-orthogonal face gear 3b mesh with each other at the same time to realize power splitting, one-stage deceleration, and complete the functions of torque splitting and reversing; the first non-orthogonal face gear 3a communicates with the first cylindrical The gear 4a is coaxially transmitted; the second non-orthogonal gear 3b is coaxially transmitted with the second cylindrical gear 4b through the transmission shaft; the first cylindrical gear 4a is meshed with the third cylindrical gear 5a and the fourth cylindrical gear 5b, a...

Embodiment 2

[0035] A coaxial double-rotor variable speed transmission device with two coaxial surface gears input by two engines, which is split and confluent, such as figure 2 and image 3As shown, on the basis of the structure of Embodiment 1, a second power input shaft is provided at the relative position of the first power input shaft 1, and the gear connection relationship on the second power input shaft is the same as that of the gears on the first power input shaft 1. The connection relationship is the same, and the second power input shaft is connected with the engine to realize dual engine input.

[0036] The present invention can also use multiple power input units. When there are multiple power input units, the multiple power input units are arranged symmetrically or approximately symmetrically according to the output part according to the analysis of system load and design parameters. Through power transmission, the coaxial rotation of the output shaft is finally realized, t...

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Abstract

The invention relates to a power transmission system of a helicopter, and particularly to a coaxial double-rotor variable-speed transmission device with coaxial face gears capable of dividing and converging for two times. The coaxial double-rotor variable-speed transmission device is variable in speed, compact in structure, light in weight, easy to machine, high in bearing capacity, high in efficiency and good in maneuverability. The engine is connected with a straight-tooth cylindrical pinion through a power input shaft, and the pinion is meshed with the two non-orthogonal surface gears whichare symmetrical in orientation, so that the functions of power distribution, primary speed reduction and reversing are achieved; the non-orthogonal surface gear is connected with the cylindrical gears through a transmission shaft and uniformly transmits power to the four cylindrical gears, so that secondary torque division and secondary speed reduction are realized; power is transmitted to the four small cylindrical gears by the four cylindrical gears through the four duplicate gear shafts and is respectively meshed with the upper gear and the lower gear, so that three-stage speed reduction and parallel operation functions are realized; and the upper gear is connected with the lower rotor through a transmission shaft to output torque, and the lower gear is connected with the planetary change gear train through a transmission shaft to achieve the purposes of speed change and power output.

Description

technical field [0001] The invention relates to a power transmission system of a helicopter, in particular to a coaxial double-rotor variable speed transmission device in which coaxial surface gears divide and converge twice. Background technique [0002] As one of the unique creations of aviation technology in the 20th century, helicopters have greatly expanded the application range of aircraft and can be widely used in transportation, patrol, tourism, rescue and other fields. However, compared with fixed-wing aircraft, helicopters have problems such as low flight speed and short range. Therefore, high-speed flight has become one of the development trends of helicopters in the future. [0003] Compared with developed countries, the number of helicopters in my country is relatively small, and the number of civilian helicopters is even smaller. The key bottlenecks are high cost, short maintenance intervals and low reliability. With the continuous development of my country's n...

Claims

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Application Information

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IPC IPC(8): B64C27/12B64C27/10B64D35/06B64D35/08F16H3/70F16H57/08F16H57/023F16H57/021
CPCB64C27/12B64C27/10B64D35/06B64D35/08F16H3/70F16H57/08F16H57/023F16H57/021F16H2057/085F16H2057/02095F16H2057/02091F16H2057/02043
Inventor 董皓王理邦张建文张颢秦赵晓龙刘锡尧李博王亚娟
Owner XIAN TECHNOLOGICAL UNIV
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