The hazards of the crane crooked and inclined

In the crane’s safety operation regulations , it is strictly forbidden to pull diagonally during lifting operations (refer to the principle of “ten no cranes” for cranes). This is because for the crane, the stresses in all directions are more complicated for the crane. , It may overload the crane, generate inertial force, and endanger surrounding personnel.

1. The inclined crane may be overloaded:

If pulled diagonally, the wire rope will form an angle with the vertical line of the ground. According to the principle of mechanics, the pulling force S acting on the wire rope can be decomposed into the force P that makes the object move vertically upward and the force F that moves the object horizontally. To lift the object off the ground, P must be at least equal to Q. At the same time, F increases with the increase of the included angle. In other words, the greater the angle when the crane is inclined, the greater the force on the wire rope when hoisting the same heavy object, and the wire rope may be broken.

2. The inertial force generated by the slanting and inclined crane of the crane will endanger the surrounding personnel:

In addition, the horizontal component of force F generated when the crane is tilted is also affected by friction when the heavy object leaves the ground. The moment it leaves the ground, the object will swing to the vertical center, which may collide with the hanging personnel, surrounding workers or other objects and cause an accident. It will not only cause overloading to break the crane wire rope, but also cause heavy objects to swing and collide with objects and people, which will cause accidents of crane equipment.

Crane oblique hoisting is a kind of illegal operation with the most accidents. During crane hoisting operations, if the distance of the hoisting object is not enough, other equipment can be used to operate. Don't give in to paralysis. In addition, the crooked pulling of the oblique hoist will cause damage to the rope guide. . Therefore, the operation of slanting and oblique crane is extremely detrimental to the safety of equipment and personnel and the service life of the equipment no matter what the situation.

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