Pneumatic hoist is a lifting equipment that uses compressed gas as the power source, with the characteristics of compact structure, convenient operation, safety and reliability. 

Here is more information about pneumatic hoists:

The principle of pneumatic hoist: Pneumatic hoist drives mechanisms such as pistons or blades by compressing gas, converting gas pressure into mechanical energy, thereby achieving the lifting or lowering of heavy objects.

Purpose of pneumatic hoist: Pneumatic hoist is widely used in various industrial fields, such as steel, chemical, shipbuilding, power, etc., 

for lifting, handling, and stacking heavy objects, improving work efficiency and safety.

Types of pneumatic hoists: According to their structure and function, pneumatic hoists can be divided into various types such as blade type, piston type, and cylinder type. 

Each type of pneumatic hoist has its unique characteristics and uses.

The characteristics of pneumatic hoists: Pneumatic hoists have the advantages of simple structure, convenient operation, safety and reliability, and simple maintenance. 

At the same time, the pneumatic hoist also has the characteristics of rapid lifting and lowering, which can improve work efficiency.

Maintenance of pneumatic hoist: In order to ensure the normal operation and service life of the pneumatic hoist, regular maintenance is required, including cleaning, lubrication, inspection, etc.