The safe operation of cranes

Truck crane is mounted on the chassis or regular car a special  gantry crane  chassis on its driving cab and crane cab be set separately. This crane has the advantage of good mobility shift rapidly. Disadvantage is that when working legs, can not load driving, do not fit in soft or muddy work on site. Truck crane lifting operation is part of the general or special vehicle mounted  bridge gantry crane  chassis, and has a truck driving performance. In order to meet the requirements of driving under adverse conditions, derived with off-road performance truck cranes. Crane in front of prohibited jobs, that the center of gravity hook lifting operation shall not exceed the rotation center of the front leg (left) ground connection to the centerline. In the starting weight indicating device malfunction can not be used with the case should be lifting performance shall be determined from the weight of the table, we must standardize  hoist gantry crane  operation behavior, to ensure safe and correct. Lifting heavy objects are not allowed off the arm; must drop the weight down to re-arm rises when the job; fall when the throttle arm is smaller, Raise when the throttle should be large; rotary action should be smooth, not allowed to sudden stops; Job ago to carefully check, prohibit the use of substandard steel wire rope and lifting chain; lifting heavy objects are not allowed off the arm; must drop the weight down to re-arm rises when the job; fall when the throttle arm is smaller.