Small crane ban hanging oblique oblique CAUSE

Small crane safety operation rules: small crane Hand Pallet Truck rope hanging objects to go through the center of gravity, and stick straight, that ban oblique oblique hanging. If small oblique hanging crane will not only form a small crane rope pull off overload and cause heavy swing jostling objects and people, and lead to personal and equipment trouble.
     Lift the weight from the ground is assumed as Q objects straight lifting, rope tension is equal to Q or S only slightly larger than Q, the weight to be freed from the ground.
     But if it is stayed, a small crane and the ground wire to the vertical at an angle. Based on mechanics, acting on the rope tension S, so that the object can be decomposed into a straight upward force P and the horizontal movement of the force F, to make the object hanging from the ground, P at least equal to Q. F along with the increase of the angle. That is, the small crane oblique view larger crane, lifting the same weight of the rope forces acting on the object is greater. So, if a full load when lifting heavy loads straight, then certainly overload when hanging diagonally, and even seizures rope pulled off trouble.
     In addition, when a small crane hanging oblique horizontal component F, when the weight off the ground before the effects of friction also suffered. Out of the ground in an instant, the object will swing to straight center, which has staff able to hang hanging around the operating personnel or other objects jostling caused trouble.