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Ground zero-gravity debugging device for space rotating mechanism

A space rotation, zero-gravity technology, applied in the field of space rotation mechanism debugging devices, can solve the problems affecting the service life of the shaft system and aggravating bearing wear, and achieve the effects of long-life use, prevention of wear risks, and stable hoisting.

Pending Publication Date: 2019-09-27
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the bearing wear is aggravated when the load quality of the existing space rotating mechanism is large in the stage of ground debugging, thereby affecting the service life of the entire shaft system, and to provide a zero-gravity debugging device for the space rotating mechanism on the ground

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  • Ground zero-gravity debugging device for space rotating mechanism

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Embodiment Construction

[0021] The content of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] In the actual working condition of the space rotation mechanism on the rail, the preload force of the bearing is required to be as small as possible, so as to obtain a lower friction torque, which is beneficial to long-life use. However, in the process of ground debugging, a larger preload is required to ensure that the shafting meets the load-bearing requirements under the action of gravity and no unloading occurs. In order to avoid the contradiction between the two, the present invention provides a zero-gravity debugging device on the ground of the space rotation mechanism, which ensures that the bearing condition of the shaft system is guaranteed as much as possible during the ground debugging process of the space rotation mechanism before launch, and prevents excessive use Potential risk of wear and tear, thu...

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Abstract

The invention discloses a ground zero-gravity debugging device for a space rotating mechanism, and solves the problem that the service life of the whole shaft system is affected as bearing wear is aggravated when an existing space rotating mechanism has relatively great load mass at a ground debugging stage. The ground zero-gravity debugging device for the space rotating mechanism comprises a supporting truss, a friction-free gas cylinder, a gas source and a plurality of flexible connectors, wherein the friction-free gas cylinder is arranged on the supporting truss; the gas source is in pipeline connection to the friction-free gas cylinder for diving a gas cylinder piston rod to act; and ends of the flexible connectors are fixed to the lower end of the gas cylinder piston rod of the friction-free gas cylinder, and the other ends of the flexible connectors are fixedly connected to the space rotating mechanism.

Description

technical field [0001] The invention relates to a debugging device for a space rotation mechanism, in particular to a ground zero-gravity debugging device for a space rotation mechanism. Background technique [0002] At present, paired angular contact ball bearings are mostly used as supporting shafting in spatial rotating mechanisms, and a certain preload is applied to ensure the rotation accuracy and improve the supporting stiffness of the shafting to meet the load-bearing requirements. When running in orbit, the space rotation mechanism is in a microgravity environment, and the bearing only bears the initial preload and works stably under a controllable friction torque. However, in the stage of ground debugging, when the load mass is large, the entire shafting will bear a large additional load, which may cause unloading of the shafting during long-term operation, which will lead to increased wear of the bearings, and in severe cases will affect the entire shafting servic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64G5/00B64G1/22
CPCB64G5/00B64G1/22
Inventor 高雄穆猷崔凯李昕谢友金王海涛杨维
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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