| 摘要 |
The invention concerns gyratory crushers and proposes that the bowl in such a crusher be adjustably supported by hydraulic piston/cylinder units, hydraulically actuated wedges positioning the bowl radially when in use, and that the bowl be held in an adjusted position by locking hydraulic liquid on one side of the pistons of the support units whilst permitting the release of the bowl from the adjusted position in the event of the intrusion of tramp iron or the like. The crusher comprises a control system having elements for locking liquid on said sides, sensing elements for sensing the pressure on said sides and for actuating the locking elements to release said liquid in the event that tramp iron or the like intrudes into the crushing chamber and hydraulic acumulator elements connected to the other sides of the pistons such that, when the locked liquid is released, the bowl is automatically raised to clear the tramp iron by liquid pressure derived from said accumulator means. |
