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Pulley Block

Crane Pulley Block

Crane Pulley Block

Crane Pulley Overview: Crane pulley block is a fixed pulley that cooperates with the hook block. It is fixed on the structure and is composed of several fixed pulleys and movable pulleys. It can save energy and change the force direction. Classification of pulleys: The pulley can be divided into......
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Crane Pulley Overview:

Crane pulley block is a fixed pulley that cooperates with the hook block. It is fixed on the structure and is composed of several fixed pulleys and movable pulleys. It can save energy and change the force direction.


Classification of pulleys:

The pulley can be divided into a work pulley and a balance pulley, which are common machinery that can rotate around a central axis. [1] 


Material of the pulley:

The material of the pulley generally uses HT15-33 cast iron, and ZG35II cast steel is often used for grab and special purpose cranes. In order to improve the efficiency of the pulley block and improve the use conditions, the bearings of the pulleys are all rolling bearings.


Pulley rope groove:

When the pulley rope groove is selected, the radius of the rope groove is often taken as R=0.6d, and the contact surface of the wire rope and the rope groove is required to be as large as possible.


Pulley block usage:

The pulley block is widely used in cranes, hoisting machine, lifts etc., and is an important part of the crane machinery.


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