It is a fixed crane pulley for the lifting hook group to work with the work. It is fixed to the structure and is composed of a number of crane pulleys and movable crane pulley. It can be both labor-saving and can change the direction of force.
Classification of crane pulleys:
The crane pulley can be divided into working crane pulley and balancing crane pulley, which is a common machine that can rotate around the center axis.
Material for crane pulleys:
Crane Pulley HT15 33 cast iron, commonly used materials for grab crane and special purpose often adopt ZG35 Ⅱ cast steel.
In order to improve the efficiency of the crane pulley block and improve the conditions of use, roller bearings are used in the bearings of the crane pulley.
Crane Pulley grooves:
When choosing the crane pulley groove, the radius of the rope groove is always R= 0.6d, and the contact surface of the wire rope and groove is required to be as large as possible.
Use of crane pulley block:
The crane pulley block is widely used in crane, hoist, elevator, etc., which is an important part of lifting machinery.