U-shaped gantry crane safety rules

Gantry crane safety procedures include the following:

① pass the examination and hold the device operating permit who are allowed to operate. The operator must strictly comply with the relevant safety, shift system.
② work should be strictly in accordance with the provisions of lubricating grease and maintain proper oil, oil flow, oil standard eye-catching, oil cup clean.
③ Check the transmission, steering mechanism, big, car walking wheel, reel, hook, pulley, shoot axes, rope and other wear and poor at
The  sino hoist  track and prohibit parking on both sides of one meter or less anything. Rain should check the crane roadbed and track is good.
④ Check the signal bells, lights and lighting equipment is perfect, test lifting height and walk the line limit switches, as well as the brake action is sensitive and reliable.
⑤ hook to the lowest position, the rope should be left on the reel at least more than two volumes. Wear and corrosion resistance over the surface of the wire rope diameter 40%, burned flattening deformation, broken one, or a broken wire inside the root twisting pitch more than 5% of cis-wound wire, steel wire around each other 10% should be prohibited.
⑥  hoist gantry crane  operation, the driver just listen to a man command, the driver and conductor should be obvious Manipulator signal or audio signal. Driver before execution should be echoed acoustic signal, such as in case of danger or crane failure, regardless of "stop" signal sent to any person, shall be immediately stopped.
⑦ first hook should first try lifting the weights hanging from the 200 mm when doing brake test and confirm before lifting a good job. The process of moving, lifting heavy objects should make up all the way objects move more than 0.5 meters.
⑧ crane lift, start, stop should be slow to prohibit the operation of a sudden change of direction, when the big, the car runs close to the end, the application of the slowest speed, prohibit the use of the stopper as a means to stop running.
⑨ In case of power outages, voltage drop, or a lot of equipment failure, on both sides of the legs when walking carts are not synchronized offset occurs, immediately move to zero for all controllers, and pull the power switch. If the weight is hanging position, should take measures to slow heavy landing.
⑩ ban stayed hanging heavy objects or pull other objects buried in the sand or in the work.
 Two cranes on the same track traveling distance must be more than 3m.
 Rope should be regularly checked and oiled once every 15 days, the former should be oiled rope grease debris cleared away, the oil is heated to about 60 ℃ in order to facilitate oil seep strand gap.
 Work, the hook should be raised, the car stops at the end of the cab, and the  overhead gantry crane  parked in designated locations, with clip locking wheel clamp track. Inspection, cleaning equipment, do routine maintenance work for each of the operating handle (switch) is placed in neutral (zero), pull the power switch, locking the cab, to achieve neat, clean and safe.