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ÖÐͼ·ÖÀàºÅ£ºTH69 ÎÄÏ×±êÖ¾Â룺A doi£º10.3969/j.issn.1006-0316.2023.05.013

ÎÄÕ±àºÅ£º1006-0316 (2023) 05-0076-05

Design of a Two-Way Constant Torque Wrench for Aerospace

XU Chunguang£¬RAN Jiangnan£¬GAO Ben£¬LIU Yin

( Tianjin Institute of Astronautics Electromechanical Device, Tianjin 300458, China )

Abstract£ºThe maintenance and replacement of some on-orbit equipment on the space station requires the loosening and tightening of the screws to reach the specified torque. According to the requirements of a mission, a two-way constant torque wrench for aerospace is designed, which can meet the requirement that the loosening torque is greater than the tightening torque. This paper introduces the structure and principle of the two-way constant torque wrench. The angles on both sides of the ratchet are different,  the tightening torque is 7 N•m with the angle of 47°, and the loosening torque is 9 N•m with the angle of 40°. Through the theoretical analysis and simulation analysis, the torque required for tightening and loosening is calculated, and the corresponding tests are carried out on the products. The test results are basically consistent with the torque calculation and simulation results.

Key words£ºbidirectional£»constant value£»torque wrench£»ratchet

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