Cooling device for giant magnetostrictive actuator

The utility model relates to a cooling device for a giant magnetostrictive actuator, and belongs to the field of precision machinery. The device mainly comprises a magnetism isolating support, a cooling water outlet, a pre-tightening bolt, a cooling water inlet, a bias coil, a permanent magnet, a cooling water pipe, a GMM rod, a return disc spring, an actuator output rod, a non-magnetic limiting block, a driving coil and a coil framework. The cooling device for the giant magnetostrictive actuator is mainly designed for solving the problem that after an existing giant magnetostrictive actuator of an active suspension of a high-speed train continuously works for a long time, due to the fact that the temperature of a GMM rod rises, the thermal expansion phenomenon occurs, and the control precision is not accurate, heat in the actuator is taken away, and the control precision is improved. Therefore, the actuator is kept at the optimal working temperature, and the excellent performance of high-precision vibration