Jaw Crusher Introduction and Operation

Jaw crusher main working parts is composed of fixed jaw plate and movable jaw plates, movable jaw plate of the fixed jaw plate for a cyclical reciprocating, the material is

crushed between the two jaws. For coarse, medium crushing hard materials and medium hard materials. Of coarse and fine jaw jaw in two forms.

Jaw crusher operation and maintenance points

1, the basic operation

Jaw crusher correct operation is very important. Incorrect operation is often the major cause of the accident. The correct operation of the crushing plantwill also help to

improve production capacity. Correct operation of the device must be in accordance with the operating rules. In large and medium-sized jaw crusher basic operations, for example,

summarized as follows:

1) Preparation before driving

(A) carefully check crusher main parts, such as jaw plate, bearings, connecting rod, thrust plate, rod springs, pulleys and V-belts are in good condition, fastening bolts loose

connections, protective devices such as pulleys, flywheel housings are complete, whether moving parts collide with obstacles.

(2) Check the auxiliary equipment such as feeder, belt conveyor, lubrication station, electrical, instrumentation and signaling equipment is intact.

(3) check whether the materials in the crushing cavity, if there are bulk material crushing chamber must be removed before starting.

(4) Check the eccentric position of the eccentric shaft, when the eccentric shaft at the lower center of rotation, the application such as cranes and winches driven wheel

rotation center of the eccentric shaft to the upper part to start later. With two motor-driven China Vibrating Screen, because of its large starting torque can be started directly.

(5) Check the fuel storage tank lip, fuel shortage should replenish. By car, you should first start the pump until the return pipe with the oil return (usually takes 5-10min),

oil pressure gauge in the normal operating pressure value, in order to start the crusher. In the case of low winter temperatures, then start the pump should be preceded by an

aggregate oil heater switch, so that the oil is preheated to 15-20 ℃ and then start the pump.

2) up and running in the Handling Precautions

(A) prepare work, should be required to drive sequential operation. Start the main motor ammeter should pay attention to the control cabinet, after 30-40s starting peak current,

the current will be reduced to the normal operating current value. During normal operation, the current should also pay attention to a longer time than the specified value.

(2) After the normal operation of the crusher, you can start feeding machine, and according to the size of the block material and crushers functioning, regulating the transfer

belt feeder to change the volume of feed. Typically, the material in the crushing chamber crushing chamber stack height should exceed the height 2/3. The diameter of the block

material is preferably not more than the inlet width of 50% -60%, when the maximum production capacity of the crusher. When feeding larger blocks, it will cause congestion,

affecting the normal production.

(3) To prevent metal objects (such as shovel teeth, track shoes, drills, etc.) into the crusher, in order to avoid damage to the machine, as they pass through the crusher, you

should immediately notify the next post operator promptly removed to prevent access to the second level crushing system and cause an accident.

(4) When the automatic tripping electrical equipment, if unexplained, non-forcible consecutive starts.

(5) the inspection found the tour does not sound normal machine must stop treatment failure, should immediately stop feeding stalled until all the material in the crushing

chamber is discharged, and then stop the main motor, cut off the power and check processing.

3) Stop Precautions

(A) order the production process must stop, first stop the feeder until all the broken material discharged before stopping crushers and conveyors. Allowed to deposit material

crushing cavity, so as not to create difficulties for the next start.

(2) must be in the crusher completely stopped, in order to stop the oil pumps and cooling system. Cooling water should be let go in the winter, to prevent cracking the bearing.

2, inspection and maintenance

1) Check the bearing temperature, bearing temperature does not exceed the general control 60 ℃ (bearing no more than 70 ℃). In the case of the thermometer is not installed,

the available surface of the thermometer to measure the surface temperature of the bearing shell.

2) Check the lubrication system and water cooling system, oil leakage, water leakage, pump running sound and vibration.

3) Check the wear of machine parts and fastening connectors whether there is loosening.

4) regular replacement of lubricants, cleaning lubrication filter.