Precautions for safe operation of the crusher:

1, boot:

Before the crusher is turned on, it must be ensured that the reducer has been added with the reducer oil, and the bearing has been filled with oil.

Before starting the machine, first check whether there is no foreign matter in the crusher cutter box, whether the cutter, spacer sleeve and fixed knife are damaged, and ensure that there is no abnormal situation before turning on the machine.

Check whether the control switches of the electric control box are in the open state, and ensure that the electric control box has no safety hazard before starting.

2, loading:

When feeding, try to maintain a uniform, in order to avoid overload caused by frequent start electric elements, motor damage, small crusher is preferably not contain large pieces of debris in the metal-based material crushed in the crusher to avoid play in operation Bad tool. Larger crushers are generally capable of crushing 5-8 mm thick metal objects.

3. Process control:

When excessive vibration or abnormal noise occurs during the crushing process, stop the inspection to see if any hard objects fall into the knife box, causing damage to the tool and spacer. After the elimination, check the running status of the reducer and motor.

During the operation of the crusher, manual cleaning of the inside of the knife box, the electrical control box and the fuselage shall not be carried out.

Maintenance knowledge of the crusher:

1. Regularly check the machine

When any stone crushing equipment is turned on and off, you should pay attention to the regular shutdown device to check the internal wear of the machine. In the process of checking the jaw crusher , it is necessary to wait for the machine to completely stop running before it can be overhauled, thus avoiding a series of dangers. When repairing the machine, be sure to check the wearing parts. After the wearing parts reach the maximum wear level, they must be replaced in time.

2, regular inspection of accessories

The smashed conveyor belt is indispensable in the stone production line, and the machine is driven by the conveyor belt. Regularly adjust the tightness of the conveyor belt to ensure that the belt is evenly stressed. Red Star Heavy Industry believes that the bearing wears more in use, and often refueling can increase the service life of the bearing, adding 50-70% of the total bearing. Under normal conditions, the bearing temperature rise should not exceed 35 ° C, the maximum temperature rise does not exceed 70 ° C. Maintenance of moving bearings, generally only arrange cleaning and oil change, does not necessarily need to replace the bearing. The usual method is to pull the bearing and the eccentric shaft out of the bearing cavity.

3, do the lubrication of the parts

Always pay attention to the lubrication work of the friction surface in time to ensure the normal operation of the machine and prolong the service life. The grease used should be determined according to the location of use, temperature and other conditions. Added grease chock 50-70% of its volume, it must be replaced every three months; you need to clean the dirt in the bearing and housing with clean gasoline or kerosene oil when new ones. The contact between the bracket and the bracket pad must be filled with grease before the machine is turned on.

Maintenance procedure

1. Minor repair: 1 time every half year, including

(1) Clean pneumatic three-way parts and solenoid valves.

(2) Check the bolts in the motor terminal box for looseness and replace the damaged seals.

(3) Washing and lubricating the roller bearings.

(4) Check the wear of the sprocket and chain.

(5) Check the tightness of the compression spring and make necessary adjustments.

(6) Check the wear of the crushing roller.

2, medium repair: 1 time a year, the content includes -

(1) All minor repairs.

(2) Check the motor bearings and replace the lubricant.

(3) Check the wear of the pulley.

(4) Check and replace the cylinder seal ring and piston ring.

(5) Check if the safety travel switch is flexible and reliable.

(6) Repair or replace the cylinder according to the wear of the cylinder block.

(7) Check the wear of the rolls, feed roller bearings and housings, and replace or repair if necessary.

(8) Check the replacement adjustment spring.

Common faults and troubleshooting methods

Crusher maintenance precautions:

(1) When checking, repairing and maintaining the crusher, it is necessary to cut off the power supply and hang the warning sign.

(2) The crusher can be inspected, maintained, maintained, and replaced only after the crusher has completely stopped.

(3) Visually inspect the blade weekly for damage or chipping.

(4) Measure the tool radius and thickness to arrange the best time for tool repair.

(5) Regularly repair the welding blade, the frequency of repair welding varies depending on the type of garbage to be crushed. Once the blade is found to be damaged, it must be repaired immediately.

(6) When the repair does not work, replace the blade.

(7) Effect of temperature on the crusher: During operation, the temperature of each component has its own normal range. In the process of using the crusher, it is necessary to prevent overload operation at low temperature, ensure normal operation in the low-speed pre-warming stage, and then drive or work after the machine reaches the specified temperature. Do not ignore the important work because there is no problem at that time; Second, we must prevent the machine from running at high temperature. During the operation of the machine, the values ​​on various thermometers should be checked frequently. If the problem is found, the machine will be shut down immediately and the fault will be eliminated. For reasons that cannot be found for a while, it must not be treated without any treatment. In the usual work, pay attention to check the working condition of the cooling system. For water-cooled machinery, it must be checked before daily work to add cooling water. For air-cooled machinery, the dust on the air-cooled system should be cleaned regularly to ensure smooth air circulation.

(8) Influence of impurities on the crusher: Mechanical impurities generally refer to non-metallic substances such as dust and soil, and some metal chips and wear products generated by the self-lifting of the crusher during use. Once these impurities enter the inside of the machine and reach the mechanical mating surface, the hazard is great. It not only causes the relative movement to block, accelerates the wear of the parts, but also scratches the mating surface, destroys the lubricating film, and raises the temperature of the parts. High, lubricating oil deteriorates. It is determined that when the mechanical impurities in the lubricating oil increase to 0.15%, the wear degree of the first piston ring of the engine will be 2.5 times larger than the normal value; when the rolling bearing enters the impurity particles, the life will be reduced by 80% to 90%. Therefore, for crushers operating in harsh environments and complex conditions, first use high-quality, matching parts and lubricants, grease, and block the source of harmful impurities; second, do the mechanical protection work at the work site. To ensure that the corresponding mechanism can work properly and prevent various impurities from entering the inside of the machine. For faulty machinery, try to repair it at a regular repair site. When repairing on site, protective measures should also be taken to prevent parts replaced during on-site repair from being contaminated by impurities such as dust before entering the machine.

(9) Effect of corrosion on the crusher: The phenomenon that the metal surface is chemically or electrochemically reacted with the surrounding medium and is damaged is called corrosion. This corrosive effect not only affects the normal operation of the mechanical appearance equipment, but also corrodes the internal parts of the machine. chemical substances such as rainwater and air enter the machine through external passages and gaps of mechanical parts, corrode the inside of mechanical parts, accelerate mechanical wear, and increase mechanical failure. This corrosion is sometimes invisible. If you can't touch it, it is easy to be ignored, so it is more harmful. In use, management and operators should take effective measures according to the local weather conditions and air pollution at that time, reduce effective measures, reduce the impact of chemical corrosion on machinery, and focus on preventing the intrusion of chemical components into the rainwater and air. .

Daily Information:

Before leaving work, the unbroken residual material in the knife box should be crushed and then stopped.

Turn off the power switch, clean the material scattered around the crusher, and check if there is loose screw on the docking part between the motor and the reducer.

Alarm bell Chang Ming:

There is a circular oil level mirror on the outside of the gearbox housing, where you can check the gear oil regularly. Generally, the lubricating oil of the reducer can be over half of the oil level mirror. If it is lower than half of the oil level mirror, it should be refueled.

After the first 400 hours of operation of the reducer, the lubricant must be replaced. Check if the lubricant needs to be replaced every six months. Mineral oil and synthetic oil must not be mixed.

Regularly add oil to the bearing parts. The bearing parts are easily damaged parts. It is often necessary to refuel to extend the service life of the bearings.

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