What is a hoist, how many types and how do they work?

What is a reel?

Hoist (Hoist) is a machine that helps reduce lifting force. To move an object up or use it to drop it from a high place down. Using wheels made of metal with high strength. Also known as a pulley, in which the central axis is a groove for the rope, chain or sling to be wrapped around to drag or pull objects more conveniently and quickly.

How many types of reels are there and how to choose?

Pulley selection should be selected from each component suitable for use. by considering the structure of the pulley We can see that the pulley has 2 main components:

• type of lifting power
• Type of material used for loading

The size of the power that the hoist can output Will determine how much weight the hoist can lift. And the source of power is divided into 3 types, namely

1. Electric hoist

The electric hoist is powered by the motor. which is suitable for frequent lifting of heavy objects but if used too much May cause the pulley to overheat.

2. Hoisting the girl's hand

Hand hoists will use gears, known as gears. that gradually helps to relax so that people can pull it but will not be able to work with heavy work for a long time can be divided into two types

3. Pneumatic hoist

Pneumatic hoists have advantages over the previous two hoists. that can lift heavy objects without being afraid of overheating of the hoist because it uses an air system to transmit power but must take care more than other types of pulleys

The material used to support the weight of the object will affect the weight and the height that the object can be lifted. It is divided into two types:

1. Chain Hoist

The chain itself is commonly used in hand winches. Because it can be used to grip. and has a long service life But will not be suitable for work that requires moving quickly. or lifting things up in height That way, a sling would be more suitable.

2. Wire rope hoist

Slings are often used in electric hoists and pneumatic hoists because they can lift heavy loads with the strength and toughness of the slings. While in use, it will not make noise. But it will be more expensive than the chain.