External magnetostrictive displacement sensor with induction magnet arranged in oil cylinder

The utility model discloses an external magnetostriction displacement sensor with an induction magnet built in an oil cylinder. And the external magnetostrictive displacement sensor is fixed on the outer surface of the cylinder barrel of the oil cylinder through a plurality of sensor mounting blocks and a sensor axial positioning mounting block, and is positioned and mounted in the axial direction and the circumferential direction of the oil cylinder. The induction magnet module is fixed to the piston rod through a nut, is close to one side of the piston and moves together with the piston. The external magnetostrictive displacement sensor senses the motion position of the oil cylinder piston by detecting a weak magnetic field left after the induction magnet module penetrates through the oil cylinder barrel. According to the utility model, the induction magnet is arranged in the oil cylinder, and the magnetostrictive displacement sensor is arranged outside the oil cylinder, so that the disassembly and assembly