Ordinary gyratory crushers lack safety devices, have difficult-to-adjust discharge openings, and are prone to blockages that are difficult to remove, hindering timely resolution. To address these issues, Chinese crusher experts, after years of research, developed the hydraulic gyratory crusher, effectively improving upon the shortcomings of the original model.

The hydraulic gyratory crusher incorporates several modifications to the original crusher, as follows:

(1) A hydraulic cylinder is added to the lower part of the crusher. This cylinder consists of a cylinder body, plunger, bushing, lower friction disc, middle friction disc, and upper friction disc. The upper friction disc is fixed to the lower end of the main shaft, and the lower friction disc is fixed to the plunger. Because the center of the friction disc is not located within the main shaft, when the crushing cone oscillates and rotates, the upper spherical surface and lower plane of the middle friction disc slide relative to each other at approximately half the rate of the crushing cone’s oscillation and rotation. (2) The upper suspension device is simplified, improving the stress state of the crossbeam;

(3) The hydraulic cylinder is connected to the accumulator and hydraulic station via pipelines, effectively preventing collisions between the ore and the cylinder, and a protective cover is installed around the cylinder;

(4) The accumulator has a safety function, mainly manifested in: the one-way throttle valve acts quickly when it catches iron, and acts slowly when resetting, effectively reducing the strong impact of resetting on the crusher.

(5) The size of the discharge port is easy to adjust; when non-crushable material falls into the crushing chamber, the crushing force increases sharply, and the system oil pressure also rises accordingly. The pressure of the accumulator is disrupted, and the oil in the cylinder is squeezed into the accumulator. At this time, the crushing cone does not fall, the crushing discharge port increases, and the non-crushable material is discharged.