Transmission mechanism for airplane auxiliary power system

Abstract

The invention discloses a transmission mechanism for an airplane auxiliary power system, which comprises a worm gear reducer, an angular displacement sensor, a direct current motor assembly, an air inlet door shaft assembly, a main body support and a spline torque main body, the main body support is positioned at one end of the worm gear reducer, the air inlet door shaft assembly is positioned at the upper end of the main body support, the angular displacement sensor is located at the other end of the worm gear reducer, the direct current motor assembly is located at the front end of the worm gear reducer, and a worm is arranged on the inner side of the worm gear reducer. According to the transmission mechanism, a worm gear can bear larger load, the service life is greatly prolonged, meanwhile, the overall dimension of a whole worm reduction box is reduced, the weight is reduced, a gear box is miniaturized, and under the condition that the transmission performance and strength of a spline are not affected, backlash-free transmission is achieved, and a better use prospect is brought.

Description

technical field [0001] The invention relates to the electromechanical field, in particular to a transmission mechanism for an aircraft auxiliary power system. Background technique [0002] The transmission mechanism of the aircraft auxiliary power system is a supporting device for flight assistance. The worm gear transmission has a self-locking function while realizing the transmission. In the existing worm gear transmission, the worm gear is processed with aluminum bronze, tin bronze and other materials. As a result, the transmission shaft and the worm gear reducer use splines to transmit torque, and the inner splines processed in the center of the worm gear cooperate with the outer splines on the drive shaft. The manufacturing process requirements of institutions are also getting higher and higher. [0003] The transmission mechanism of the existing aircraft auxiliary power system has certain disadvantages in use. First of all, in the worm gear transmission technology, th...

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Problems solved by technology

[0003] The transmission mechanism of the existing aircraft auxiliary power system has certain disadvantages in use. First of all, in the worm gear transmission technology, the worm gear is made of soft materials such as aluminum bronze and tin bronze. Small, low transmission efficiency, can not be used in continuous operation occasions, which is not conducive to people's use. In addition, in worm gear transmission, the diameter of the worm wheel is relatively large, resulting in an increase in the size of the worm gear reducer box, and the weight Increase, there is an ulnar side gap in the spline transmission, and the angle error is increased during the torsion transmission process of the transmission shaft. It is not easy to observe the working state of the device, and it cannot be repaired in time when there is a problem. The process has brought some adverse effects, so we propose a transmission mechanism for aircraft auxiliary power system

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