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Introduction To The Structural Features Of The External Moving Jaw Low Jaw Crusher

Last Update:2020-05-13 03:49:13

When the external jaw crusher is working, the movable jaw plate makes periodic reciprocating motion to the fixed jaw plate, sometimes approaching, sometimes leaving. When approaching, the material is crushed by extrusion, splitting and impact between the two jaw plates; when leaving, the broken material is discharged from the material orifice by gravity. This is the simple crushing principle of the crusher.

From the structure of the external moving jaw crusher, we can see some characteristics of the external moving jaw crusher. The fixed jaw of the machine is placed between the movable jaw and the eccentric shaft, the crushing chamber is arranged obliquely, the fixed jaw is on the top, and the movable jaw is on the bottom to form the crushing chamber. The crushing chamber is divided into two sections from top to bottom. The moving jaw and fixed jaw of the two sections have different dip angles. The upper section is used for coarse crushing and the lower section is used for fine crushing. This design method greatly improves the crushing ratio.

In addition, the lower part of the lining plate of the movable jaw is provided with a long strip-shaped screen hole along the direction of the discharge opening to form a screen plate. Supported by an external swing rod, the movable jaw moves back and forth through the side plate driven by the eccentric shaft, and then breaks the material. The crushed materials are screened through the sieve plate. Two operations of crushing and screening are realized on the same equipment, which reduces the blocking and over crushing of the crusher, with large output and good energy saving effect.

The low jaw crusher uses the connecting rod in the four link mechanism as the side plate of the crusher, while the moving jaw is only the extension of the connecting rod, and the power is transmitted to the outside moving jaw through the side plate. The separation of the moving jaw and the connecting rod makes the connecting rod no longer restrain the moving characteristics of the moving jaw. As long as the parameters of the mechanism are changed, the moving track of the moving jaw can be adjusted, so that the moving jaw can obtain good moving characteristics. The periodic swing of the moving jaw causes the materials in the falling crushing cavity to be crushed under the action of extrusion, splitting and bending.

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