Crane safety devices: the height limit device. For special occasions, such as still need to make small amounts of over-winding operation, press the release button on the meter box, this time limit will be lifted action, but this time the operation must be very careful how much money 50 tons crane to prevent accidents. Telescopic crane safety device: When unexpected incidents Buy 50 tons of cranes, telescopic boom cylinder circuit of high-pressure hose or pipe burst or cut off, the hydraulic circuit balancing valves to work 50 t crane, locked from the lower cylinder working oil chamber 50 tons crane price, so hang on their own retracted so as to ensure the safety of operations. Crane use and maintenance: keep the machine clean, timely adjustment, tighten loose parts, to prevent loose and lead to increased wear of components or parts missing. End of run-in period, forced to deal with the machine maintenance, inspection and adjustment work to do, taking care to replace the oil.