Large double drive chain main backup slewing device

By designing a large-scale dual-drive chain main and backup rotary device, and adopting a combination of main and backup drive modes with rolling bearings and slide rail structures, the maintenance problem of rotary devices in the aerospace field has been solved, improving reliability and applicability, and making it suitable for the high load-bearing requirements of satellite payload platforms and solar panels.

CN117108697BActive Publication Date: 2026-06-23SHANGHAI AEROSPACE SYST ENG INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI AEROSPACE SYST ENG INST
Filing Date
2023-05-29
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing mechanical rotary transmission technology is difficult to maintain in the aerospace field, and its reliability is also problematic in the space environment.

Method used

A large-scale dual-drive chain main and backup rotary device was designed, which adopts two transmission modes: main and backup. The main motor and backup motor are driven by the main motor and backup motor respectively, and the rotary motion is achieved by combining rolling bearings and rolling slide rail structure.

Benefits of technology

It improves the reliability and maintainability of the slewing device, adapts to the high load requirements of the space environment, avoids the risk of backup failure of a single transmission form, and meets the high reliability requirements of spacecraft such as satellites.

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Abstract

The application discloses a large-scale double-transmission chain main-backup slewing device, which comprises a rolling bearing assembly, a main / backup end gear, a main / backup gear ring, a main / backup speed reducer assembly, a main / backup motor, upper / middle / lower flange plates, a three-fulcrum rolling bearing assembly and a three-fulcrum guide rail; the upper and middle flange plates are fixedly installed through the rolling bearing assembly; the main gear ring and the backup gear ring are rigidly connected with the upper flange plate and the lower flange plate respectively; the main / backup motor and the main / backup speed reducer assembly in series constitute a main / backup transmission assembly which is installed on the middle flange plate; the main / backup end gear is externally engaged with the main / backup gear ring; and the three-fulcrum rolling bearing assembly and the three-fulcrum guide rail are connected with the middle flange plate and the lower flange plate respectively. The double-transmission chain is used to realize slewing movement in the main-backup mode, so as to solve the problem that the existing mechanical slewing transmission technology cannot be maintained in the space environment of the slewing device under the background of space technology.
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