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A hoist is a device used for lifting or lowering a load by means of a drum or lift-wheel around which rope or chain wraps. It may be manually operated, electrically or pneumatically driven and may use chain, fiber or wire rope as its lifting medium. The most familiar form is an elevator, the car
Link (chain) – Basic component of a chain; Pry bar – Type of lever tool; Rope – Length of braided strands; Shackle – Metal assembly which functions as a removable connecting link; Sheave – Grooved wheel used to support a moving belt, wire or rope; Sheer legs; Sling (rigging) – Rope, webbing, wire or chain used to support a load for ...
It is good practice for all personnel using lifting equipment to conduct a pre-use inspection on all items. Regulation 9 of LOLER also outlines specific requirements for the formal inspection of lifting equipment at mandatory intervals. These inspections are to be performed by a competent person and the findings of the inspections recorded.
He claimed that many engineering firms conceded on the difficulty of efficiently disengaging the chain from the teeth as the pulleys turned, but his firm developed a "pitch" chain which solved the issue. Marketed as "Weston Differential Pulley Blocks with Patent Chain Guides", the pulley had good sales, namely, 3000 sets in 9 months.
The electric chain hoist, also known as the "electric hoist", is the least used type of engine crane. The operation is similar to the chain hoist in the way that chains are used to lift the engine. The electric chain hoist uses an electric motor operated by remote control to lift the engine, unlike the chain hoist where the operator has to ...
A rigger or slinger is a skilled tradesperson who specializes in the assistance of manual mechanical advantage device comprising pulley, block and tackle or motorised such as a crane or derrick or chain hoists (chain fall) or capstan winch.
So far this year, we've eliminated over 265 systems to streamline our engineering, supply chain and manufacturing processes. For example, Collins is on track to reduce their engineering systems by ...
Chain hoists, more commonly referred to as chain motors, are the most common form of point hoist, especially with touring musical shows (e.g., rock-and-roll shows), but are relatively slow. Chain motors can be mounted at the grid to hoist a load from above, or mounted at the load to "climb" towards the grid.
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