What are the methods for the use of crane machinery
The weight of the lifting up in the ascent is approximately 0.5 gn-0.6 Gn Start and slowly accelerate, and when you push the handle to the first step in the direction, stay for about two seconds, accelerating at the stage, and must stay for about one second. When the hook is hoisting to the desired height, the handle should be brought back to the zero level, which will slow down the motor and stop the stop.
Decline in operating The descent should not be carried out by the first high speed in case of an accident. Heavy load drop should be reduced at the slowest speed, and no speed drop will be used to prevent the brake from falling too fast. The reverse brake should not be used when reloading, so as not to reverse the motor and burn the motor.
Reload the lift weight of the lifting weight Q is greater than 0.7 Gn When lifting, the handle should be moved quickly to the second gear, and the object will be hoisted. Object to lift and then gradually speed up, if the handle off until after the second leg of the motor still cannot start, means that the suspended objects has exceeded the rated lifting weight, immediately stop lifting. When an object was promoted to a predetermined height, should cascade handle back to zero, the residence time in the second leg should be slightly longer, to reduce the impact, but can't stay in the first leg, to prevent heavy things fall quickly back zero
Lifting operation Light lift lift weight Q is less than 0.4 Gn When lifting up, step by step, each must be over one second, and it will take more than five seconds to move from being still and accelerating to the rated speed. When the hook was promoted to a predetermined height, should cascade handle back to zero, each also want to stay more than 1 second, make the motor gradually slow down, the last parking brake.
boot For crane transmission, closed all the safety limit, merger all emergency switches and control handle to zero, and then close the switch control box, after turn on the main contactor, to begin to work.
