Tire crane hoisting mechanism manipulation

This article explains the tire crane clutch bearing mechanism operating essentials , and precautions

Hoisting mechanism manipulation
  Agencies designate vertical ( pull switch in the " machinery " position ) ;
  ( A ) cargo promotion . Lifting the handle will pull to the "up" position, release the brake drum pedal controls the lifting speed . Observe the lifting motor current value when the current is less than ll oA can continuous operation ; current exceeds lloA (Jm: <155A) , the starting time should be 71 Ding an operating cycle time of 15%.
    ( 2 ) the goods stay in the air . Release the accelerator pedal , the brake pedal depressed reel and levers in place. If the goods need to be in the air longer stay , you also need to pull the switch in the " Electric" position to ensure safety.
    ( 3 ) gravity drop. Lifting the handle in the neutral position . Jane brake pedal controls the volume . Lifting lowering speed shall not exceed 1.5 times the speed . Work process in order to avoid danger .
    Electrically operated ( pull switch in the " Electric" position ) ;
    ( A ) cargo promotion . Loosen the drum brake pedal , pull the handle to the frame lifting "up" position tube , feet stepped on the accelerator pedal to control the lifting speed . Precautions with the " mechanical " manipulation.
    ( 2 ) the goods stay in the air . Release the accelerator pedal , the lifting levers in place, if the goods are to be in the air for a long stay , you can simply roll the brake pedal depressed , to ensure safety.
    ( 3 ) power down . Switch to the " Electric" position in the idle case, the lifting handle to the down position , and then gradually increase the throttle . And special attention should be : Do not step on the accelerator pedal , the brake to prevent excessive inrush current due to sudden brake release , resulting in speeding motor motored phenomenon . F lowering speed shall not exceed half the lifting speed to avoid brake overheating. In each job , the job site should be dry ground while Tanzania sturdy , forced to work in the soft ground , should lay adequate strength steel or wood, Paul Wang crane dump trap does not occur .
    From the weight of the crane lifting heavy objects should be rated lifting Scale enumerated range. Do not fight outrigger operation, the tire pressure should be o. 7 Land o. 02MPa, and tighten the screw jack overseas before , to prevent the machine tipping accidents. " Driving, brake " switch should pull in the " brake " position. Check the lifting height limiter is working proper