Chain rigging can not be sloppy when lifting .pdf
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For safe operation of the group who can not be ignored crane hoist
1 before each lift should try hanging load is to check the mechanical operation is normal, if you
must identify the reasons for the abnormal , to be repaired enabled.
2 Check carefully before using the rope , hook, hanging climbing and other parts are inta ct.
3 when the job is forbidden to stand under the hook , 100 ton mobile crane the operator should
take the initiative to avoid and stop unauthorized personnel entering the work area.
4 . The operator must concentrate thoughts and partner closely with staff , to ensure that the
security situation under lifting, laughing frolic when the job is strictly prohibited .
5 to regularly check on the electric cable hoist , repair and maintenance , the equipment is in
good condition at all times strictly prohibited sick job .
6 operated by a hand operation, non -independent staff willingly drove lifting. After each use
promptly cut off the power supply.
Chain rigging can not be sloppy when lifting
1 lifting develop good habits before lifting work plan how hanging , lifting and unloading .
(2) Prepare : determining the weight and center of gravity hanging objects , carefully read the
accompanying documents, marked a good weight lifting points and data . Can be determined
only after a hook to hang the center of gravity in the proper position .
3 gantry cranes operator should be informed of the weight is hanging objects .
4 crane hook to be hanging vertically suspended above the center of gravity .
5 lifting crane lifting objects necessary to avoid damage to the object , but also to prevent
damage to the rigging itself . To avoid rotating or falling, should be subject to the following
a) leg rigging , electromagnetic overhead crane lifting point should be located vertically above the
center of gravity of the object .
b) If the leg s rigging , hanging above the lifting point should be located on both sides of the
object , lifting points at the center of gravity .
c) If the three-legged and four- legged rigging , rigging point should be uniform focus is on lifting
the object level, and was hanging over the center of gravity . Must pay attention to lifting angle β
( located between the vertical and hanging leg ) : lifting angle the greater lifting capacity is
smaller. Lifting more than 60 degrees angle is absolutely not allowed .
If the three legs or four legs chain rigging crane lifting a non - uniform distribution of the object , it
should be the greatest legs lifting angle is calculated for each leg lifting objects rated load . When
the angle of the legs rigging legs while it should not only lifting the entire chain to an object
calculated for each leg lifting rated load .