Hoists and trolleys are widely used in overhead material handling to move loads between two points. They are usually used together in a single system in order to maximize efficiency. In this system, the hoist is used to lift and lower the loads, whereas the trolley is used to move the load horizontally.
Trolleys can be powered by either manual or electric power sources. Manual trolleys, such as hand-pushed, rope-pulled, or ratchet-driven trolleys, are predisposed by physical labor. Electric powered trolleys can be powered by either a cable-and-drum, geared-trolley, or pneumatic generator.
The most common type of hoist used in overhead material handling is the manual chain one. It is the simplest and least expensive way to lift and lower loads. It is the safest too since it eliminates many of the potential hazards associated with more complicated hoists such as electric motor lifts. Manual hoists are extremely durable and can be used in a variety of lifting capacities.
Hoists and trolleys also differ in their capabilities. Manual hoists can transport a maximum weight of up to 5 tons, while electric hoists can handle up to 10 tons. On the other hand, manual trolleys can only transport up to 3 tons and electric trolleys can handle up to 5 tons.
Hoists and trolleys can also be used for hoisting and maneuvering of heavy machinery in industrial plants. In this application, hoists are used to move the machinery between points on the production line, whereas trolleys help to maneuver the machinery within the plant. They are usually equipped with power take-off systems which help to provide the required power to operate the hoists and trolleys on a daily basis.
Safety precautions should always be taken when operating hoists and trolleys. Both the hoists and trolleys should be kept in a clean and dry environment. They should be inspected regularly and proper maintenance should be carried out on a regular basis. Furthermore, operators should wear safety equipment such as safety helmets and safety shoes while operating hoists and trolleys.
In conclusion, hoists and trolleys are essential components of any overhead material handling system. They are used to lift and maneuver heavy loads between two points, and they are available in a variety of power sources, sizes and capacities. Safety must always be kept in mind when using hoists and trolleys, and operators must wear the appropriate safety equipment at all times.
