The structure of the torque wrench

hydraulic flange spreaders is also called the torque meter, torque screw whorls. It is the theory of beam bending, torsion bar

Principle of bending and compression principle of helical spring, designed to measure the effect on the nut torque size. flange alignment tools with a long elastic rod, the end with a handle, the other end with a square or hexagon head, in a square or hexagon head suit a replaceable sleeve, with steel ball stuck. Also equipped with a long pointer on the top. Scale plate fixed to the handle seat, each grid scale value is 1 n (or kg/m). Before use, first will be installed in the indicator on the wrench to adjust to the required torque, then throw a wrench, when reach the predetermined torque, indicator pointer will turn to pin a party, the last pointer to collide with the pin shaft, through sound signal or sensing signal to inform the operator.