How to maximize the usefulness of lifting tackle

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Lifting tackle how to use in order to maximize the usefulness of
(1) When lifting tool wear around the electric chain block group, it should be noted rope pulley groove angle. In any case, the pulley groove angle may not exceed 4 ° ~ 6 °. Because, when the wire rope in the pulley groove angle is too large, the wire rope and the pulley groove side wear increased, on the other hand, is easy to slide the wire rope rope groove, so that the lifting operation can not be normal, or even accidents.
(2) to wear around the lifting gear or pulley block pulley rope pulley must comply with the requirements. Elected with a rope pulley diameter exceeding the requirements will exacerbate sheaves wear, but also to make rope wear and tear. From the weight of the block must be equipped with the appropriate thickness of the rope.
(3) block group were wearing around after use, take a test hanging, detailed examination of each part is good, whether the  friction between the friction or rope at each other, if wrong, should after adjustment to formally lifting.
Change (4) the direction of the force on a electric chain block, or at high altitude operations, without declaring the use of hook-type pulley to prevent decoupling. Such as the use of hook-type pulley, you should take protective measures. If, after a good hook to hang with a thin wire to hook mouth shut, so that the hook can not emerge; or using hook with Picasso plates, this hook is more convenient to use, in the hang hook, Picasso plate under the action of the spring to bounce the hook mouth shut.
(5) shall not be overloaded using pulley, the pulley when there are cracks or defects, shall not be put to use. Other parts, such as hooks, axles, pull boards flawed, does not meet the requirements, are not allowed to use.
(6) If the multi-door pulley which is in use only a few doors, its weight should be commuted from reduced accordingly, can not be based upon the original starting weight make.