Nut loosening device

The utility model provides a nut loosening device which comprises a torsion unit which is arranged on a machine frame through a sliding component and comprises a power component and a linkage component. The translation unit is arranged on the rack, is connected with the torsion unit and comprises a driving part; and the sleeve is arranged at the end part of the linkage component in the torsion unit and is provided with a sleeving port connected with the nut. According to the nut loosening device provided by the utility model, torsion control required by nut loosening is realized by utilizing the torsion unit, and meanwhile, the translation unit is arranged for adjusting the positions of the torsion unit and the sleeve, so that the nut loosening device can adapt to jigs of different models, a proper operation height can be found, and the operation efficiency is improved. 本实用新型提供一种松螺母装置，包括扭力单元，通过滑移部件设于机架上，包括动力部件和联动部件；平移单元，设于机架上，并与扭力单元连接，包括驱动部件；套筒，设于扭力单元中的联动部件的端部，其上具有与螺母连接的套接口。本实用新型提供的松螺母装置，利用扭力单元实现对松螺母所需的扭力控制，同