Crusher daily inspection list: key points before starting, during operation and after shutdown

Crusher daily inspection list: key points before starting, during operation and after shutdown

In order to ensure the safe, continuous and efficient operation of the crusher and avoid sudden failures, operators must develop the habit of performing daily inspections step by step. This checklist divides the inspection into three stages, each with its own core points that must be focused on. Adherence to implementation can effectively prevent accidents and extend the life of equipment.

1. Inspection before starting up (preparation work, eliminating hidden dangers)

Before connecting the power supply, the following checks must be completed:

Equipment tightness: Check and tap with a hand hammer to confirm that all key connection parts such as anchor bolts, crushing cavity liner bolts, and bearing seat bolts are not loose.

Lubrication and oil level: Check whether the oil level in the lubricating oil tank or grease cup is within the standard range and whether the oil quality is clean. Replenish oil at points that require manual greasing (such as bearings).

Transmission components: Check the tightness and wear of the V-belt or coupling to see if there is any breakage or delamination. Turn the car manually to check whether the rotor is flexible and whether there is any jamming or abnormal friction sound.

Inside the crushing cavity: Observe whether there are iron parts, debris or unexhausted materials left in the cavity from the last time. They must be cleaned thoroughly to prevent damage to the equipment.

Safety protection: Confirm that all protective covers, guardrails, and safety warning signs are intact and installed in place.

Auxiliary equipment: Check whether the supporting feeder, conveyor belt, and dust removal equipment are normal, and confirm that there are no obstacles or people around them.

2. Inspection during operation (monitoring status, timely intervention)

After the device is started, it should be continuously monitored:

Listen to the sound: Listen carefully to the operating sound inside the equipment (bearings, crushing cavity). Normally there should be a uniform roar. When sharp metal friction sounds, periodic impact sounds or irregular abnormal noises occur, the machine should be stopped immediately for inspection.

Look at the instruments: Observe whether the readings of the ammeter, voltmeter, and thermometer are within the normal range. An abnormal increase in motor current is usually a signal of overload or material jamming; an abnormal increase in bearing temperature (usually within a short period of time) is a sign of oil shortage or damage.

Sense vibration: Feel whether the vibration of the body is stable and whether it suddenly intensifies. Unusually severe vibrations may indicate an unbalanced rotor, damaged bearings, or loose feet.

Check the feeding: Make sure the feeding is uniform and continuous. It is strictly forbidden to add too much or too little or to put in oversized or super-hard foreign objects. Observe whether the discharge particle size is normal.

Observe the environment: Pay attention to the surroundings, prevent people from approaching moving parts, and ensure that material transportation is smooth and free of obstructions.

3. Inspection and maintenance after shutdown (final maintenance, preparation for next time)

After shutdown, you should not leave immediately. You need to complete:

Sequential shutdown: After the material in the crushing cavity is completely emptied and the materials on all conveying equipment have been transported, the machine will stop step by step in the reverse order of starting up.

Comprehensive cleaning: Clean dust, oil and spilled materials on and around the equipment, especially around the motor heat sink and bearing seat.

Internal inspection (after safety power outage): Open the inspection door, check the wear of hammer head, jaw plate, impact plate, screen plate (screen bar) and other wearing parts, record the wear degree, and provide a basis for planned replacement.

Tightening and supplementation: In the hot engine state, check the tightening of key bolts again. Replenish oil/grease as needed.

Fault record: Record the problems, inspection status, and maintenance content found during this operation in detail in the equipment operation log.

Core principle: Always maintain a closed loop of "full preparation before starting, keen observation during operation, and proper handling after shutdown". This list is the bottom line to ensure safety and efficiency, and should be strictly implemented in conjunction with the specific equipment instructions. Any abnormalities should be reported and handled in a timely manner and must not be run while sick.