What safety precautions should be paid attention to in the use and maintenance of belt conveyor?

2. Classification of safety sources According to the characteristics of the belt conveyor in the concentrator and the structural characteristics of the belt conveyor, we classify the safety sources of the belt conveyor into seven categories, namely, conveyor belt, driving device, electric drum, transmission, direction change, tensioning roller, idler, sweeper and discharging device. 3. General rules of safety precautions 3. 1. It is forbidden to start the belt conveyor with load. When it is necessary to stop the machine due to power failure or other reasons during operation, the load on the belt conveyor must be removed before it can be started again. 3.2, it is forbidden to cross the belt, must cross the parts, must be set across the catwalk; 3.3. When the belt is running, it is forbidden to knock with hands or objects, adjust the idler, arrange the sweeper, clean up the ore in the rolling area of the drum, and clean up the accumulated ore in the funnel. When it must be handled, it must be stopped and attended by special personnel, and the system of hanging and delisting in case of power failure shall be strictly implemented. In particular, it is suggested that one person must be supervised outside when cleaning up the funnel deposit. When the height exceeds 2m or the operation is inconvenient, the operator should fasten the safety belt. 3.4. When removing the belt or installing a new belt, a special tool should be set to clamp one end of the belt and slowly loosen or lift it. When replacing the diagonal belt, it is forbidden to stand below; 3.5 When lifting is required for maintenance, the safety of aerial work shall be strictly observed, and the lifting equipment shall be safe and reliable; 3.6, after the maintenance, belt and belt conveyor personnel nearby to ensure that all leave, before commissioning; 3.7, commissioning should have specialist command, specialist operation; 3.8, if there is any abnormal situation in the trial run, need to stop processing, after processing, can try again, during the trial run, to the ore from less to more, to the ore evenly, when there is deviation, need someone to adjust processing. 3.9 All participants shall wear labor protection articles as required. 4. Sub-rule for safety precautions 4. 1, belt replacement, joint bonding, surface adhesive peeling treatment, edge defect treatment 4. 1. 1, belt replacement in whole or in part. According to different situations and requirements, the mobile management office will formulate a set of safe and feasible replacement measures and specific terms before replacement. 4. 1.2, joint bonding 4. 1.2. 1, except for special emergencies, we require all joints to adopt vulcanization bonding, and the specific vulcanization methods and requirements will be issued as an annex to this matter; 4. 1.3, top glue peeling treatment, edge defect treatment 4. 1.3. 1, top glue peeling treatment and edge defect treatment are all carried out in the shutdown state, and the system of stopping delivery and hanging out of the market is strictly implemented in accordance with item 3.3. 4. 1.3.2. Maintenance personnel shall wear labor protection articles as required and operate as required; 4. 1.3.3. After treatment, the trial operation shall be carried out according to the requirements of 3.6, 3.7 and 3.8. 4.2. Maintenance of driving device The driving device includes motor, high-speed coupling, reducer, low-speed coupling, etc. Except for the 4# conveyor belt, 5# and 10 ~ 65433 of all belt conveyors in our factory. 4.2. 1. When overhauling the motor, it is necessary to stop the machine and check the electricity. Only after implementing the system of hanging and delisting can the motor be overhauled; 4.2.2. When overhauling the reducer, first implement item 4.2. 1, pay attention to the ground slipping, dismantle the high-low speed coupling, and pay attention to the ground cleaning when changing the lubricating oil; 4.2.3 When overhauling the connecting pin, the damaged pin should be carefully removed, and when installing a new pin, it should be tapped to make it enter, and barbaric maintenance is strictly prohibited. 4.3, electric drum maintenance 4.3. 1, if online maintenance, need to stop, implement power outage inspection and hanging delisting system, before maintenance; 4.3.2. If offline maintenance is required, it is necessary to stop the machine, loosen the tensioner and remove the idler and roller bracket near the drum. When the drum position is enough, the electric drum in the crushing workshop can be hoisted by crane, and the drum in the grinding and floating workshop is hoisted by herringbone truss. When lifting, pay attention to the position of binding drum and the safety performance of spreader and rope. In the process of hoisting and installation, it is necessary to have a special person to command (. 4.4. Maintenance of driving roller, reversing roller and tensioning roller 4.4. 1. All this must stop; 4.4.2. Generally, if it is necessary to replace the bearing at one end, both ends should be replaced at the same time. When replacing the bearing, it can be replaced online according to the actual situation. All the rollers of the thickener can be replaced online except the reversing roller and the tensioning roller of the tensioning station. 4.4.3 When lifting the tensioning drum at the tensioning station, the operator should fasten the safety belt. Usually two people operate, two people monitor the surrounding situation and the change of lifting tools, and four people take turns; 4.4.4 For other maintenance of all rollers, according to the actual situation, before maintenance, the Mobile Management Office will issue relevant detailed maintenance plans. 4.5, roller maintenance 4.5. 1, replace any roller, all need to be in a state of downtime; 4.5.2. When replacing the lower roller, two people are needed. After the drum is transported to the place to be replaced, one person holds the drum, and the other person clamps one end of the drum into the lifting lug of the drum, and then protects the drum. The other person clips the other end into the lug. After confirming the correct assembly, turn the drum by hand. After confirming that there are no other abnormalities, it is considered that the replacement is completed. Special note: personnel changing posts should wear labor protection articles in strict accordance with the requirements. 4.5.3 When replacing the upper roller, it usually needs three or more people to operate, and one or two of them will pull the belt of the roller to be replaced away from the roller frame, and then follow the steps in 4.5.2. 4.6. Sweeper maintenance 4.6. 1. After replacing the sweeper, it needs to be replaced offline and put in the waiting position when it stops; 4.6.2, online replacement of sweeper rubber, need to stop, after being adjusted position and rubber elastic position, before commissioning, commissioning process, it is forbidden to use anything or hand into the sweeper for processing; 4.7.4.7.1Maintenance of discharging device. Maintenance and overhaul operations should be carried out in the shutdown state; 4.7.2, the car wheel adjustment, reducer lubrication, coupling and other parts of the work, according to the aerial work safety operation, at the same time, need to have a person to monitor the changes in the surrounding conditions underground; 4.7.3 When replacing the trolley chain, the sprocket and chain should be coated with lubricating oil first, and then replaced as required. When replacing, be careful that the sprocket hurts your hand.