2013年7月20日星期六

Introduction lifting tackle

Introduction lifting tackle
Hoist and trolley is an important tool for lifting, lifting block structure is simple, easy to use, able to tackle and block group number changes the direction of pulling and lifting or moving operation, especially by the coalition pulley pulley block, with  lift hoist ,  masts or other  hoist equipment   lifting tackle widely used in the construction and installation operations. Product specifications from 0.03 to 320 tons, round pick from a single round to round, hanging with a hook, chain, ring, rings, lifting beam four kinds of choice for users. Easy to use, versatile, can be manual, mechanical. Mainly used in factories, mines, agriculture, electricity, construction and other production and construction, piers, docks, warehouses, machine installation, lifting and other cargo.
hoist and trolley tonnage according to the bearing can be divided into different slip rings hook lift hoists car hanger hoists, chain link hoists, hangers hoists. Lifting tackle sub-GB and non-standard lifting tackle. Lifting block according to the number of rounds can be divided into 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.
A lifting tackle only change the direction of the force, and can not effort; but with two pulley block group consisting of, but you can get away from the direction of the change on the basis of effort to achieve the purpose. During lifting and transport operations, the single door pulley can be used as a guide pulley; pulley block can be used with winch for lifting purposes.  hoist and trolley  used in ball and roller bearings wheel core as the national standard bearings, pulleys two each, according to lifting the tonnage of different specifications, standard bearings for high speed, maintenance-free.

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