The use of manual lever waists is relevant in various areas of production, as well as economic and household activities. They allow without much effort and, at the same time, without using traction motors:
- Raise.
- Omit.
- Move.
A load weighing up to 5 tons using a lever invented by Archimedes in ancient times. A large selection of chain manual lever hoists is presented in the online catalog of their manufacturer, where for each model of this device contains detailed technical descriptions and even photographs. And you can choose the best option for yourself by studying the principle of their classification.
Hand Hoist Design Features
When choosing a manual mechanical hoist, one should proceed from how the specific equipment will be used. On this basis, they can be conditionally divided into:
- Stationary - installed and fixed at a specific location. Used only for lifting /lowering loads.
- Movable - a specially made suspension allows the device to be used to move loads in a horizontal direction, almost anywhere where there is a reliable fulcrum for it, for example, a tree if it is necessary to pull out a stuck car.
Mandatory selection criteria, of course, are the load capacity required by the buyer, the maximum lifting height allowed by the manufacturer and the amount of tractive effort.
Reference: tractive effort in the technical documentation of the equipment is indicated in Newtons (n), means the maximum force that will need to be applied when lifting a load, for example 5t - up to 200n. This effort can be reduced by increasing the length of the lever to the parameters permitted by the manufacturer.
