Lifting tackle characteristics and classification

First, the characteristics of lifting tackle
      Aka pulley lifting tackle is a  hoist equipment   is an important tool for lifting the lifting industry, its shape is simple, it is extremely easy to use, able to  Hoist and trolley  number changes the direction of pulling and lifting or moving operation, in particular by the coalition pulley pulley block with winches, masts or other lifting machinery.
Second, the classification of lifting tackle
1, lifting tackle by tackle and hanging objects can be divided into hook type pulley, chain pulley, rings and hanger-type block-type block of four. Tackles are mostly small and medium hook type, chain ring and rings style, while large pulley hanging by rings and beam.
      2, according to the number of rounds into a single door pulley, pulley and multi-door two-door pulley.
      3, according to the contact wheel and axle shaft can be divided into plain bearings and rolling bearings mounted between two kinds.
      4, according to points splint can be opened, and closed with an opening pulley tackle. Pulley openings splint can be opened for easy loading ropes are generally single door pulley, it is often used at the foot derrick used for guide blocks.
      5, tackle different ways by using divided into fixed and movable pulley tackle.
      6, weight lifting tackle small and compact. There are both manual and electric.
① manually tackle. By the Human pulling traction chains through worm gear drive chain roller, so that heavy lifting. Using homemade brake load, the heavier the load the greater the braking torque, safe and reliable. Operating range of hooks under a vertical line.
② electric pulley. Gear mechanism driven by the motor, wire rope drum and hook pulleys, make heavy lifting. Rope drum within the shell, and the motor and gear mechanism with brake associated. Intermediate housing upper part of the lug. After hanging vertically fixed lifting heavy loads. Pulley can also be hung on the run small car, a run-in trolley, traveling along the overhead track, in the workshop inside or transportation of materials between the workshop and the workshop.