Device for measuring friction coefficient of fastener of pushing type pre-tightening device

The utility model relates to a device for measuring the friction coefficient of a fastener of a pushing type pre-tightening device, a force load sensor is arranged on the left pressure-bearing end face of a bearing fixing seat, a boss shaft of the bearing fixing seat is connected with a supporting seat through a thrust ball bearing, a large pushing nut is installed in a large pushing nut fixing seat, and a large pushing nut is installed in the large pushing nut fixing seat. A pushing bolt is connected into the pushing large nut fixing seat through threads, the front end face of the pushing bolt makes contact with the supporting seat, the rear end of the pushing bolt is connected with a rotating shaft through a pushing bolt connecting piece, and torque load sensors are arranged on the rotating shaft and the supporting seat respectively. The friction coefficient measuring device provides a platform test condition for the friction coefficient of a fastener of a pushing type pre-tightening device, can measure the