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A driving joint suitable for high and low temperature environment in deep space

A high-low temperature, joint technology, used in electromechanical devices, joints, manipulators, etc., can solve the problems of small adaptable temperature range, low positioning accuracy, small transmission torque, etc., to achieve a wide adaptable temperature range, high shaft stiffness, transmission high torque effect

Active Publication Date: 2020-05-19
SHANGHAI AEROSPACE SYST ENG INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing drive joints cannot meet the needs of complex deep space exploration tasks due to problems such as small temperature range, large hysteresis, large transmission error, low positioning accuracy, large friction torque or even stuck at deep low temperature, and small transmission torque.

Method used

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  • A driving joint suitable for high and low temperature environment in deep space
  • A driving joint suitable for high and low temperature environment in deep space
  • A driving joint suitable for high and low temperature environment in deep space

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Experimental program
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Embodiment Construction

[0021] Below in conjunction with accompanying drawing, the present invention is described in detail:

[0022] The present invention provides a drive joint suitable for high and low temperature environments in deep space. The mechanism includes: a stepping motor 1, a short-cup harmonic reducer 2, a rotary transformer 3, a casing end cover 4, a casing 5, an output shaft 6. Angular contact bearing 7, disc spring 8, inner bushing 9, outer bushing 10, stop nut 11 and bearing end cover 12.

[0023] The stepper motor 1 and the housing end cover 4 are positioned through the spigot and fixed by screw connection; the output shaft of the stepper motor 1 is fixedly connected with the input end of the short-cup harmonic reducer 2, and the flat key 13 is used for torque transmission. ; The fixed end of the short-cup harmonic reducer 2 is installed between the shell end cover 4 and the shell 5, and the three are fixed in series with a set of screws, wherein the gap between the shell end cove...

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Abstract

The invention provides a drive joint suitable for deep-space high-low-temperature environment. The drive joint is characterized by comprising a step motor, a short cup type harmonic reducer, a rotary transformer, a housing end cover, a housing, an output shaft, an angular contact bearing, a disc spring, an inner shaft sleeve, an outer shaft sleeve, a stop nut and a bearing end cover. After being amplified by the reducer, motor torque drives a performing mechanism to rotate through the output shaft, the rotary transformer is mounted on the output shaft for directly detecting an output angle of the drive joint, the torque transmission path is the shortest and connecting links are fewest, so that the drive joint has the advantages of being wide in applicable temperature range, high in reliability, small in return difference, small in axial jump, great in transmitted torque and the like.

Description

technical field [0001] The invention relates to the technical field of aerospace electromechanical technology, in particular to a drive joint suitable for high and low temperature environments in deep space. [0002] technical background [0003] The drive joint is the core component of the spaceborne actuator (such as the antenna pointing mechanism, the deployment mechanism, the robotic arm, and the drive mechanism), and is the basis for the actuator to achieve tracking orientation and positioning. [0004] 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 frequent and tasks are becoming more and more complex. The requirements for the tracking and orientation performance, reliability, deep and low temperature environment and high and low temperature environment adaptability of the spacecraft's extravehicular executive components are getting...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25J17/00H02K37/24
CPCB25J17/00H02K37/24
Inventor 赵明宣李建辉李源韩智超黄潇嵘钱志源
Owner SHANGHAI AEROSPACE SYST ENG INST
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