Jaw crusher mainly in two ways to achieve the risk of possible overload and discharge port adjustment:

Mode 1: hydraulic hydraulic crusher is used, its main shaft is located in the plunger of the hydraulic cylinder. Changing the volume of the hydraulic oil under the plunger can change the position of the upper and lower crushing cone, thus changing the size of the discharge port. Overload, the spindle downward pressure increases, forcing the plunger under the hydraulic oil into the hydraulic drive system in the accumulator, so that crushing cone down to increase the discharge port, discharge with the material into the crushing chamber of non- Broken pieces (iron, wood, etc.) to achieve insurance.

Mode 2: the mechanical way, the spindle at the top of the adjustment nut, rotating adjustment nut, crushing cone can drop or rise, so that discharge port becomes larger or smaller, overload, by cutting off the transmission pulley on the insurance pin To achieve insurance.

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Jaw crusher jaw movement up and down movement to promote the role of nesting, and the upper part of the horizontal stroke is greater than the lower, easy to break large pieces of material, so the crushing efficiency than double-elbow plate. Its disadvantage is that the jaw plate wear faster, and the material will be smashed over the phenomenon of high energy consumption. In order to protect the important parts of the machine from overload.

When the jaw crusher is overloaded, the conical housing forces the spring to compress and raise itself, in order to increase the discharge opening and discharge the non-broken material. The adjustment of the discharge port is carried out by the adjusting sleeve, and the adjusting sleeve which is fixedly mounted on the shell can drive the shell up or down by the thread on the outer circle to change the size of the discharge opening. Hydraulic crusher crusher and adjust the insurance and hydraulic cone crusher the same way.