The main risk factors in the construction process of the climbing frame electric hoist are mechanical injury and electric shock. The following is a detailed introduction of the risk factors for everyone:
1. Before using the climbing frame electric hoist, the mechanical part and electrical part of the equipment, wire rope, chain, hook, The limiter should be intact, the electrical part should be free of leakage, and the zero connection or grounding should be good and reliable. When working in the open, a rain shelter should be installed.
2. Crawler electric hoist should be provided with buffers and baffles at both ends of the track; it should be equipped with upper and lower limit position limiters, and can ensure that the operating circuit is automatically cut off when the hook reaches the limit position; single layer The electric hoist wound with wire rope must ensure that the rope guide is intact, and the wire rope should meet the standard for safe use.
3. During installation, debugging and maintenance, when the climbing frame electric hoist hook is raised to the upper limit, the top of the hook must be greater than 50mm from the drum shell (the hoist exceeding 100kN must be greater than 120mm, and the climbing frame electric hoist wire rope should be on the drum The winding is neat; when the hook is lowered to the lower limit position, it should be ensured that the safety number of the wire rope on the drum is not less than 3 turns.
4. When the electric hoist of the climbing frame is lifting the first load, the weight of 125% of the rated load should be applied. When hanging 100mm above the ground, carry out a load test for several minutes to check the braking effect of the electric hoist of the climbing frame, and confirm that it is in good condition before it can be officially used. Fifth, before starting the electric hoist of the climbing frame, an audible indication signal should be issued first, heavy objects The lifting or lowering operation should be smooth and uniform, and sudden deceleration or acceleration is strictly prohibited during lifting; slow speed should be used when lifting large items, and the rope should be tied to prevent swinging. There should be no obstacles in the hoisting area. When lifting, do not hold your hand between the rope and the object. When the lifting object rises, it should be strictly prevented from punching.
5. When the electric hoist of the climbing frame is lifting heavy objects, it is strictly forbidden to pass over from people or equipment. The weight should be no more than 1.5m away from the ground, when the empty vehicle is walking. The hook should be more than 2m away from the ground. It is strictly forbidden to hang the heavy object in the air during the work gap.
6. The electric hoist of the climbing frame should not be used frequently or jog repeatedly to prevent If the brake is overheated, abnormal odor or high temperature occurs during operation, it should be stopped immediately to check and eliminate the fault. IX. When the electric control switch of the suspension cable is used for the electric hoist of the climbing frame, the insulation should be good and the sliding should be free; there should be a person behind the standing position More than 2in open space, and the button can be operated correctly.
7. When lifting the electric hoist of the climbing frame, when the heavy objects get out of control due to the failure, emergency measures must be taken to drop the heavy objects to no one.
8. The electric hoist of the climbing frame is at When braking within the rated load, the sliding displacement of the heavy object should not be greater than 80mlIl. Otherwise, the brake should be checked and adjusted or the brake ring should be replaced.
9. After the operation of the climbing frame electric hoist, the climbing frame electric hoist should be parked at the designated position When the hook is raised to a position greater than 2m from the ground, turn the controller to the zero position, cut off the power, and lock the switch box.