Gantry crane lifting rope pulley block method introduced two kinds of wear around

overhead gantry crane lifting block divided by the number of rounds single door pulley, pulley and multi-door two-door pulley. By pulley and hanging objects can be divided into hook type pulley, chain pulley, rings and hanger-type block-type block of four.
Gantry crane lifting rope pulley block, there are two main methods to wear around the "smooth worn and flowers worn"
a, flower dress
In  hoist gantry crane  pulley block pulley in larger quantities, and using a winch traction available when flowers worn, pulley block to improve the working conditions and reduce the tension out of the head, but also ensure the pulley block lifting force evenly and smoothly.
b, Shun-worn
Shun wear law is to rope some order by the radial fixed pulley and movable pulley of the pulley is a simple drawstring methods, depending on the winch number of units are different, can be removed from a single head, may also have a non-rotating balance wheel and pull out double head, single head along each segment due to worn rope, single head along the worn ropes due to the force of each segment increment terminations maximum force,steel crane which could easily lead to tackle skewed. Although this method of wear around the advantages of simple and easy to wear around, but should be used for the following four pulley pulley block.
The double-tap along to wear not only can avoid tackles rule skewed, and smooth, reducing resistance,sino hoist speed hoisting speed.