Safety Requirements For The Use Of Electric Hoists For Cranes

Safety Requirements for the use of Electric Winches for cranes

 

(1) The installation distance of the electric winch should be 15 meters away from the lifting distance of heavy objects. If a mast crane is used, the distance should not be less than the height of the mast.

 

(2) The distance from the center of the reel to the nearest guide block should be greater than 20 times the length of the reel.

 

Anti-winding of the drum, when the rope is wound to the center of the drum, the rope should be perpendicular to the center line of the drum.

 

(3) The wire rope must be firmly fixed to the drum. The minimum allowable diameter of the drum is 16 to 20 times the wire rope. When the wire rope is left to the required length, the wire rope left on the drum must not be less than 3 turns.

 

(4) The winch must be fixed firmly, solidly and steadily to prevent dumping and slipping when lifting objects.

 

(5) The electrical control of the hoist should be placed on the operator, and all electrical equipment should be equipped with ground wires to prevent electric shock, and electrical switches need to be protected.

 

 

(6) Before driving, check whether the rotation of each part of the hoist is flexible, and whether the braking device is reliable and sensitive.

 

(7) Operators must be familiar with the performance and structure of the hoist and have practical operating experience.

 

(8) When working, no one is allowed to stand within two meters around the winch, and no one is allowed to stand on both sides of the running rope and around the guide block.

 

(9) When the hoist is running, the action should be smooth and even. When lifting heavy objects, it should be hoisted slowly first. reliable.

 

(10) It is strictly forbidden to use the winch for lifting loads, and it is not allowed to hang heavy objects in the air, and it is forbidden for people to stay or walk under the suspended objects.

 

 

(11) The operation of the winch must be strictly implemented. If the signal is unclear, the steel rope will deviate, and the brakes will not work when the load is loaded, do not drive.

 

(12) After the winch stops working, cut off the power supply, place the controller at zero position, use the safety brake to brake tightly, and put the running rope to the wooden point