V-shaped crusher with high crushing efficiency

The invention discloses a crusher with adjustable jaw plate spacing. The crusher includes a fixing frame, a jaw plate, a pushing device, a driving device and an auxiliary device. The jaw plate includes a first jaw plate and a second jaw plate. The pushing device drives the first jaw plate to swing up and down. The auxiliary device includes an auxiliary motor, a support frame and a moving block. The support frame fixes the auxiliary motor on the surface, away from a lining plate, of the second jaw plate. The output end of the auxiliary motor is connected with a gear, one end of the moving blockis fixedly connected with the second jaw plate, and the other end of the moving block is a rack meshing with the gear. The rack is arranged horizontally and perpendicular to two side plates. According to the crusher, the movement of the first jaw plate in the up-down direction is effectively driven through the pushing device, crushing of ore is realized, meanwhile, the auxiliary device drives thesecond jaw plate to move