Screw dismantling tool

The utility model provides a screw dismantling tool. The screw dismantling tool comprises an outer sleeve, a driving clamping shaft, a driven clamping shaft and a screw head, a circular through cavityis formed in the outer sleeve; the driving clamping shaft is arranged in the circular through cavity; the driven clamping shaft is rotatably arranged in the circular through cavity, is in transmission connection with the driving clamping shaft, and can rotate under the axial acting force of the driving clamping shaft; the screw head is detachably connected with one end, far away from the drivingclamping shaft, of the driven clamping shaft; according to the scheme, the screw dismounting device is simple in structure, convenient to use, short in consumed time and more convenient to use, and the screw dismounting efficiency is improved. 本实用新型提供一种螺钉拆除工具，包括外套、主动卡轴、从动卡轴以及螺钉头；外套内设有圆形通腔；主动卡轴设置于圆形通腔内；从动卡轴可转动设置于圆形通腔内，从动卡轴与主动卡轴传动连接，并且从动卡轴能够在主动卡轴的轴向作用力下发生转动；螺钉头与从动卡轴远离主动卡轴的一端可拆卸连接；本实用新型提供的方案，结构简单，使用方便，耗时较短，使用更加便捷，提高了螺钉的拆除效率。