Lifting equipment can be divided into light and small lifting equipment, lift, cranes and overhead monorail system and other types according to different structure. Light and small lifting equipment mainly includes hoisting tackle, sling, jack, manual hoist, electric hoist and ordinary winch. Most of them are in small volume, light weight and easy to use. Mostly are driven by manpower and applicable to the situation which without hard work except electric hoist and winch. They can use alone and some can also regarded as hoisting mechanism of crane. The lift is mainly for vertical or near vertical movement. Lift has a fixed lifting line. It includes lift, elevator, mine hoist and hopper lifter. Crane is a hoisting equipment.
All kinds of cranes shall be installed and indicate signs. And install hoisting limiter, load control, interlocking switch device according to the need. Trial hoisting should be checked before using. Steel wire rope mus be arranged in neat rows on the drum. Tail is clamped and retain more than three circles at least. Certainly you could not change the performance of the crane arbitrarily. You should obey the signal of command staff in operation. It should be suspended operation when the signal is unknown because it may cause the accident.
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