솔리 유압너트씰 교체 영상 한눈에

Bolt tensioner generally consists of hydraulic pump, high pressure hose, pressure gauge and tension body. Among them, the hydraulic pump is the power source, the pressure gauge reflects the output pressure of the pump, the high-pressure hose connects the hydraulic pump and the stretching body. Tension body is to achieve the bolt stretching of the executive element. Mainly by the piston cylinder, piston, support bridge and stretching nut composition.When working, the high-pressure oil output from the power source is transported to the piston cylinder through the high-pressure hose, and the piston in the piston cylinder moves up under the pressure, driving the stretching nut to move upwards. The stretching nut is threaded with the working bolt, so as to elongate the working bolt, so that the bolt elongation reaches the required deformation, the deformation is controlled within the range of elastic deformation, and then carry out pre-tensioning or dismantling operations, and finally make the working bolt return to its original shape by means of hydraulic or mechanical return to the original shape to complete the operation.