Views: 0 Author: Site Editor Publish Time: 2025-05-28 Origin: https://www.yilemachinery.com/
Large industrial pulleys are key transmission components used in heavy machinery and industrial equipment, mainly for changing the direction of force, transmitting power or lifting heavy objects.
Pulley Wheel Sheave Pulley Pulley Block
Function: It transmits power through ropes, chains or belts to achieve the lifting of heavy objects, direction change or speed regulation.
Application scenarios: Commonly found in heavy industrial fields such as cranes, elevators, mining equipment, port machinery, and conveying systems.
High load capacity: The designed load-bearing capacity can reach several tons to hundreds of tons, and the materials are mostly high-strength steel or alloys.
Durability: The surface is often hardened (such as quenched or galvanized) to resist wear and corrosion.
Precision balancing: Dynamic balancing is required during high-speed operation to avoid vibration or uneven loading.
Compatibility: It can be used in conjunction with various transmission media such as steel wire ropes and toothed belts.
Fixed pulley: It fixes the axis and only changes the direction of the force (such as the pulley at the top of a crane).
Movable pulley: It moves with the load and can save effort (such as the hook assembly of a crane).
Composite pulley block: A combination of multiple pulleys, significantly enhancing mechanical efficiency (such as in elevator traction systems).
Wheel diameter: It directly affects the bending fatigue life of the rope. The diameter of large pulleys may exceed 2 meters.
Groove type: V-shaped grooves are anti-slip, and U-shaped grooves are compatible with various ropes.
Bearing type: Roller bearings are used for heavy loads, while lubricated sealed bearings are used for high-speed applications.
Wind power field: Used in pitch systems to withstand extreme wind loads.
Oil drilling: The pulley block for lifting the drill pipe needs to be explosion-proof and corrosion-resistant.
Automated production line: Synchronous pulleys achieve precise transmission.
Regular inspection: including crack detection and bearing clearance measurement.
Lubrication management: Synthetic grease should be used in high-temperature environments.
Scrapping standard: The groove must be replaced when the wear at the bottom exceeds 10% or plastic deformation occurs.
Lightweight: Use titanium alloys or composite materials.
Intelligence: Integrated sensors monitor load and wear conditions.
Energy-saving design: Low-friction coating reduces energy loss.
Therefore, the design of this type of pulley must comply with international standards to ensure reliability under extreme working conditions. When selecting the model, factors such as the load spectrum, environmental conditions and maintenance costs also need to be comprehensively considered.
