Force measuring device

The utility model relates to a force value measuring device, and a pressure head part of the force value measuring device is composed of a piston rod, locking nuts and regulating nuts which are arranged on the piston rod, a moving body and a force sensor. The force sensor is fixed in the moving body and is pointed to the end part of the piston rod, and the force sensor is added with pre-loading by the piston rod by an inner and an outer sets of locking nuts and regulating nuts which are arranged on the moving body. The force sensor displays the value of the force by a secondary instrument. The force value measuring device is particularly suitable for measuring force value under larger loading condition, higher measurement precision can be obtained, and the repeatability and reproducibility are better.