Lifting tackle is an important lifting equipment, lifting tackle pulley can repeatedly change the direction of pulling cable pulley block and lifting or moving hanging objects, lifting tackle is widely used in construction and installation work. The product standard ranges from 0.03 to 320 tons, and the gear train ranges from single to ten wheels.
pulleys will be divided into different quality grades according to different construction materials. The following is an introduction to the selection criteria of Hebei Shenli lifting pulley materials.
1. Hook: The national standard safety hook is used, which is cast from alloy steel. The pulling force coefficient reaches 4 times the coefficient.
2. Pulley: cast iron (high strength and resistance, but greater wear on the wire rope, only used when hoisting large equipment) pulley (lightweight, higher hardness, suitable for large pulley production): low hardness, damage to the wire rope during use small.
