Driving assembly

Abstract

The invention provides a driving assembly. A driving motor and a motor mounting end cover are positioned through a stop opening; the output shaft of the motor is fixedly connected with the input end of a harmonic speed reducer; torque transmission is carried out by using a flat key; the harmonic speed reducer fixed end is arranged between the motor mounting end cover and an assembly shell; the output end of the harmonic speed reducer is fixedly connected with a driving shaft; the driving shaft is supported and positioned by a diagonal contact bearing, and is mounted on the assembly shell; a connecting flange is connected to the driving shaft through a pin screw; the motor torque is amplified by the speed reducer and then is driven by the driving shaft to rotate; a rotating transformer is installed on the driving shaft and directly detects the output angle of a driving joint, so that the middle links of the torque transmission are less, and by virtue of the use of the pin screw, the driving assembly has the advantage of being small in return difference; and due to reasonable structural design and layout, the internal cavity is small, the compactness is high, the overall envelope size of the assembly is reduced, and the weight and installation space requirements of the assembly are reduced.

Description

technical field [0001] The invention relates to a drive assembly. Background technique [0002] The drive component is the core component of the spaceborne actuator (such as antenna pointing mechanism, deployment mechanism, mechanical arm, driving mechanism), and is the basis for the actuator to realize tracking, orientation and positioning. [0003] With the rapid development of modern aerospace technology, space exploration activities represented by space stations, moon landing programs and fire detection projects are becoming more and more frequent and the tasks are becoming more and more complex. The requirements for tracking and orientation performance, reliability, deep low temperature environment and high and low temperature environment adaptability of spacecraft extravehicular executive components are getting higher and higher. [0004] At present, the development of space drive components is mainly concentrated in the low and medium orbits of the earth. There are ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a drive assembly, which can solve the problems of the existing drive assembly due to the small adaptable temperature range, large return difference, large transmission error, low positioning accuracy, and small transmission torque.

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