A modular block has lad wye plates configured on opposing sides of the block that carry the load from an axle fastener to load fasteners coupled to the eye. This configuration of the load wye plates enables the other components, including contact surface components such as the sheave, sheave wheel, side plates and bushings to be made of lower weight materials, such as polymers thereby increase the load to weight ratio of the modular block. Ultrahigh molecular weight polyethylene (UHMWPE) is a preferred material for the contact components and high load capacities are realized with these polymeric components used in conjunction with the load wye plates. Also, the use of non-sparking polymeric or composite materials is required in some applications to prevent fire or combustion.
MODULAR PULLEY BLOCK
2024-12-05
Patent
Electronic Resource
English
IPC: | B66D Haspeln , CAPSTANS |