The basic knowledge of beam lifting tools includes concept, classification (type), component composition. The details are as follows: the spreader of this beam is also known as the cross beam, and the cross beam is also known as the iron pole, which is mainly used for the hoisting of columns and roof frames; The classification includes adjusting beam, Feng beam, I-beam; Most of the materials are high quality alloy steel; The rated load is generally 2T-40T; Beam body accessories include pin shaft, eye ring (rotary hook); There are types of pulley beam, steel plate beam, truss beam, steel pipe beam and so on.

　　What is the safety factor of beam spreader? The safety factor of the design and manufacture of beam spreader should not be less than 4 times the rated lifting weight; The hook and rigging on the light shadow symmetrical distribution, equal length, reliable connection, the new manufacturing hanging beam application 1.25 times of the rated load test, before the verification can be put into use. Before using the hanging beam, check whether the connection of the hanging beam, crane hook and sling is normal; The horizontal Angle between the sling and the hanging beam should not be too small to avoid deformation of the hanging beam due to excessive horizontal force. The Angle should generally be 45° ~ 60°.

　　If the Angle is too small, the shackle can be used to fix the two rope rings on the crane hook together to prevent its decoupling; When the hanging beam cracks, deformation, wear, corrosion serious, should be scrapped immediately. Related reading:

　　How to install and use the wire rope buckle on the special spreader

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