2. When the driver takes over, check the brakes, hooks, wire ropes and safety devices. Abnormal performance is found and should be eliminated before operation.
You must ring the bell or call the police before driving. When approaching people in the process of operation, they should also give a continuous bell or give an alarm.
4, the operation must be carried out according to the command signal. When you hear the emergency stop signal, no matter who sends it, you should execute it immediately.
5. Turn off the main power supply only when there is no one on or around the crane. If there is a lock or sign on the power circuit breaker, it should be removed by relevant personnel before turning off the power supply.
6, before turning off the main power supply, should make all controllers handle in zero.
7. In case of sudden power failure at work, all controllers' handles should be reset to zero; Before returning to work, check whether the crane moves normally.
operating characteristic
1, hoisting machinery is usually huge in structure and complicated in mechanism, which can complete lifting movement and horizontal movement. For example, the bridge crane can complete three actions: lifting, trolley running and trolley running; Portal crane can complete four actions: lifting, luffing, turning and cart running. In the process of operation, it is often difficult to operate several actions in different directions at the same time.
2. There are many kinds of heavy objects lifted by hoisting machinery, and the load is constantly changing. Some heavy objects weigh hundreds or even thousands of tons, and some objects are tens of meters long and irregular in shape, such as loose particles, hot melt state, inflammable and explosive dangerous goods, etc. And the lifting process is complicated and dangerous.
3, most of the lifting machinery, need to run in a larger space, some need to install tracks and wheels (such as tower crane, bridge crane, etc.). ); Some should be equipped with tires or crawler to walk on the ground (such as truck cranes and crawler cranes, etc.). ); Some people need to walk on the wire rope (such as passenger and cargo aerial ropeway), which has a large activity space and will have a great impact in the event of an accident.
4. Some lifting machines need to lift people directly on guide rails, platforms or wire ropes (such as elevators and lifting platforms). ), their reliability directly affects personal safety.