Safety operation and accident analysis of belt conveyor

The key of belt conveyor is driven by equipment Drive roller Reversing roller Conveyor belt Up Lower buffer idler set Tensioning device Feeder Feeding equipment Feeding equipment Support prefabricated members Safety protection device and other parts. The quality of belt conveyor machinery and equipment is determined by the production material and production process, which is also basic. And the future application maintenance is important. Standard practical operation of belt conveyor machinery and equipment Safety operation and timely maintenance can directly endanger the service life of belt conveyor. The safety use of belt conveyor is as follows:

1、 Safety operation process of belt conveyor

1. The mining belt conveyor should be operated with load. After it operates normally, it can discharge materials. It is strictly forbidden to discharge materials before operation;

2. After starting the machine, rotate it at high speed for 3~5min, and check whether all parts are normal, and whether the transmission belt is loose and deviated In case of direction deviation, M20 tension anchor bolts on both sides of the driven roll can be adjusted and clamped if any;

3. Strictly control the transportation capacity of machinery and equipment, and prohibit overload application, which will lead to premature destruction of components;

4. Check the positive roller Driven roller Bearing with seat The transmission gear wheel makes the same noise. If the tightness of the transmission chain is loose, the adjusting anchor bolts on the side of the motor board can be adjusted and tightened. Lubricate the bearing with seat and transmission chain once a week Tighten the stop screws of the sprocket chain to avoid shaking of the sprocket chain;

5. Regularly maintain the drive belt fixing bracket Buffer idler electric machinery. The bearing with seat and the connecting anchor bolts of various parts shall be tightened immediately in case of falling off;

6. When the direction of the transmission belt deviates during operation, it should be shut down for adjustment, and it is not allowed to make use of it, so as to prevent the edge from being worn out and increase the load;

7. Understand that when the screw conveyor is connected in series for fitness exercise, it needs to start gradually from the dumping end, and the material can be discharged after all operations;

8. It is forbidden to maintain and repair the equipment during operation, so as to prevent hands or other objects from being rolled into the transmission belt and causing damage to employees.

2、 Description and common problems of belt conveyor safety accidents

1. The primary factors leading to safety accidents of machinery and equipment are material smashing the conveyor belt and direction deviation tearing the conveyor belt.

Be sure to reduce the relative height of blanking as much as possible to reduce the impact of materials. When the relative height of blanking exceeds 1.2 meters, the materials should not immediately impact the surface of the conveyor belt when designing the guide chute and the Buchner funnel of the vibrating feeder. When transporting objects mixed with block materials, the materials should go through very skewed grid data before they reach the conveyor belt, so that the powder and a small piece of materials fall into the conveyor belt first after the grid data, and the block materials roll onto the conveyor belt of a small piece of materials along the grid data, so as to avoid the block materials immediately impacting the nylon conveyor belt surface.

2. The factors causing safety accidents are generally cleaning or replacing parts when the conveyor belt is running. Therefore, persistent maintenance management system is one of the key methods to prevent safety accidents.

If there is a pedestrian passage after the tail rudder barrel is rolled, a guardrail or protective cover should be set at the side of the tail rudder to prevent workers from being accidentally rolled in by the conveyor belt. A protective fence should be set under the heavy hammer block of the car type tensioning device or vertical tensioning device to avoid the risk of workers stepping under the heavy hammer.

As far as possible, the belt conveyor should park after unloading all the materials it carries, and it is better to operate with full load. When several sets of collaborative applications constitute transportation equipment, the automatic control system of electrical equipment that opens and closes in turn should also be customized according to this regulation.

3. Each belt conveyor should have application and maintenance records to do a good job in the handover work.