Crusher and elastic pull rod mechanism thereof

The utility model belongs to the technical field of crushing equipment, and provides an elastic pull rod mechanism which comprises a pull rod, a spring seat, a spring, a limiting sleeve and a nut, and the pull rod sequentially penetrates through the spring seat, the spring and the limiting sleeve and is connected with the nut; the elastic pull rod mechanism further comprises a labor-saving assembly arranged between the limiting sleeve and the nut, the labor-saving assembly comprises an outer sleeve, an inner sleeve and a thrust ball bearing, the pull rod is sleeved with the inner sleeve, and the inner sleeve is contained in the outer sleeve. The thrust ball bearing is arranged between the inner sleeve and the outer sleeve, and the nut can abut against the inner sleeve and rotate relative to the outer sleeve with the thrust ball bearing as the axis. The utility model further provides a crusher with the elastic pull rod mechanism. The technical problem that an elastic pull rod mechanism arranged on a crusher in