Tower crane is also known as "tower crane". With a section of a section of the joint height (referred to as "standard section") used to hang construction of steel, wood flute, concrete, steel pipe and other construction materials.
Tower crane general working temperature of -20 ℃ ~ +40 ℃, working wind speed is not greater than 6. Tower crane drivers and heavy lifters must be trained, and have a special machine induction certificate to operate. Operation of tower cranes must do "five good". Five good is: good concentration of thought; up and down contact; machine inspection; tied to lift good; unified command good.

  Tower crane device four limits, two insurance shall be complete, sensitive, reliable. Tower crane in operation, if you hear an abnormal noise, should immediately stop, tower cranes after a good overhaul and then put into operation. To frequently check the wear and lubrication of the wire rope, if not meet the requirements to immediately replace.

  Before each operation of the tower crane, are to no-load test the switch contacts of the devices, and require in the correct position. Often check the tower crane tower verticality <3/1000. tower crane does not work, loosen the braking device of the slewing mechanism, the tower crane hook up to close to the jib, the hook is strictly prohibited to hang heavy objects, walking tower crane shall be the clamp rail clamp lost tight.

  Tower crane jacking plus section when the rotary brake should be in the braking state, such as feel unreliable can also add temporary fixed measures; tower crane jacking process, forbidden to rotate the boom or drive the load trolley and the use of lifting and lowering action.

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