Crane technical operation

A crane workplaces should be smooth and firm, you should check whether it is the foundation endurance requirements. Operators should be familiar with the work environment, check the mechanical work area, turning space accessibility and other insecurity.
Two  bridge gantry crane  at work should be carefully checked before each part, limit switches, safety devices, braking performance is sensitive, and the empty load test run, confirm the normal behind the prospective work.
Third, before lifting operations, the operator should be aware of lifting operations programs and related issues and unify their thinking and commanding officers. The operator must closely cooperate with the commanding officers, commanding officers in strict accordance with the signals to operate. Command signal unclear if found or an error, the right to refuse to perform. Other staff are issued for danger signals, but also should pay attention to. Warning whistle before crane operation.
Fourth, non- gantry crane  overload operation, oblique hanging and pull the hanging. Allowed to be hanging heavy weight lifting unclear. Prohibited or condensate lifting underground burial in the ground or objects on the device.
Fifth, in the job, it was prohibited under heavy lifting, boom next strictly prohibited.
Six, manned strictly prohibited hook, lifting objects over someone is strictly prohibited.
Seven, crane operation, maintenance and adjustment work is strictly prohibited personnel.
Eight, when lifting heavy banding firm. Prohibit stacked or hung on a sporadic heavy objects. Place heavy objects on the situation to the attention of the ground, to prevent tilting skew. Sporadic materials and articles must hoists or rope lashing firmly before lifting. Lifting explosive and other dangerous goods, safety measures must be taken.
Nine, lifting weights, weight hook vertically through the center of gravity should be. First trial cranes, heavy lifting from the ground 200 mm should be stopped and checked; crane stability, braking reliability, weight balance, lashing the firmness. Heavy lifting, try to avoid decentralization boom, must be put in, the first weight down, and put the boom.
Ten, as with dual-lift crane, the two cars arm should maintain a certain distance (to prevent head collide and coincide with the center of gravity caused by lifting emphasis) have special unity of command, slowly, so closely coordinated action, weight should not exceed two cranes from the weight of the sum of the nominal 75% less load on each crane bear its nominal weight of 80%.
Eleven, heavy lifting and rotation, the speed should be uniform, action should be smooth. Heavy falls, must slow light up. Prevention of sudden braking. Diaoqi weight prohibiting the free fall. Job, pay close attention to the operating state of the hook and rope to let roll back bar and so on.
Twelve, rotary or landing shall not reverse lever is not completely stopped before the action. Strictly prohibited to use way to fight anti-car brake achieve the purpose.
Thirteen, lifting operations, in case of emergency, should promptly take the necessary measures.
Fourteen, job, arm elevation shall not exceed the maximum original requirements. If no data are available at the maximum over 75 degrees is appropriate. Under certain extent when lifting heavy objects, such as exceeding the rated total weight, rotation speed should be slow. Heavy lifting arm and arm elevation large, heavy objects should be first unloaded on the ground, and keep rope taut, the lower arm and then decoupled. Except in special cases, try not to use 30. The following angles.
Fifteen,  jib crane  downtime or rest, should heavy fall to the ground, not on the hook hanging heavy objects.
Sixteen, rain and snow work, in order to prevent moisture brake failure, particular emphasis should be suspended through a trial to prove reliable brakes only after work. Rain, snow-fall more slowly.
Seventeen, outdoor operations, heavy rain, fog, and 6 and 6 above winds affect safety, they should stop operation.