Analysis of the operating principle and core effects of pneumatic hoist

1、 Operating principle: Precision mechanical system driven by air pressure

Pneumatic hoists use compressed air as a power source to lift, move, and position heavy objects through pneumatic systems. The operation process can be divided into the following steps:

Power input

The air compressor compresses air into high-pressure gas (usually 0.6-0.8MPa), which is transported through pipelines to the interior of the pneumatic hoist.

pneumatic circuit control

The operator adjusts the flow direction of high-pressure air by controlling the valve. When lifting heavy objects, air is introduced into the lower cylinder to push the piston upwards; When descending, air is introduced into the upper cylinder, and the piston moves downward. By adjusting the valve opening, the air flow can be precisely controlled to achieve smooth lifting and lowering of heavy objects.

Power transmission

The piston movement drives the deceleration system (such as planetary gearbox) and the hoisting system (chain or wire rope) to work together. The deceleration system converts the high-speed rotation of the pneumatic motor into low-speed high torque output, ensuring stable lifting of heavy objects; The hoisting system completes the vertical movement of heavy objects through the retraction and extension of chains or wire ropes.

Horizontal movement (optional)

Part of the pneumatic hoist is integrated with a walking mechanism, which achieves horizontal movement through pneumatic driven wheel sets and expands the operating range.

Technical highlights:

Stepless speed regulation: By adjusting the air pressure, the lifting speed can be continuously changed to adapt to different working conditions.

Centimeter level positioning: The precise air path control and deceleration system work together to achieve centimeter level positioning accuracy for heavy objects, far exceeding traditional lifting equipment.

Gas interruption protection: Equipped with a built-in gas interruption protection device, it automatically locks heavy objects when the gas source is interrupted to prevent them from falling.

2、 Running effect: a perfect combination of safety, efficiency, and adaptability

Intrinsic safety: the ideal choice for explosion-proof environments

Explosion proof performance: The pneumatic hoist has no electrical components, completely eliminating the risk of electrical sparks and electric shock, and is suitable for flammable and explosive places such as petroleum, chemical, and coal mines.

Case verification: Shanxi Coking Coal Dongqu Mine introduced pneumatic hoists in transportation operations, successfully solving the problem of changing equipment between rail transportation and trackless rubber tired vehicles without any safety accidents, and receiving unanimous praise from colleagues.

Efficient homework: dual improvement of speed and accuracy

Lifting speed: The lifting speed of pneumatic hoists is 3 times that of electric hoists and 5-10 times that of manual hoists, significantly shortening the operating cycle.

Convenient operation: The pull rod control design responds quickly, and the handle instructions are executed agilely, reducing the difficulty of operation.

Data support: In the application case of Dongqu Mine, the pneumatic hoist increased the efficiency of replacement by 40% and reduced labor costs by 30%.

Environmental Protection and Energy Conservation: Practitioners of Green Production

Zero emissions: No exhaust gas, wastewater or noise is generated during operation, meeting environmental protection requirements.

Low energy consumption: Powered by compressed air, energy costs are reduced by 20% -30% compared to electric hoists.

Strong adaptability: stable performance under harsh working conditions

Environmental tolerance: It can operate stably in harsh environments such as high temperature (such as metallurgical industry), humidity (such as shipbuilding), and high dust (such as mines).

Structural advantages: small size, light weight, easy to carry and install; The wear rate of components is low, and the maintenance cost is reduced by 50% compared to electric hoists.

Economy: Cost advantage of long-term use

Long lifespan: Pneumatic motors have a simple structure, high precision in component processing, and a service life 2-3 times longer than electric hoists.

Less maintenance: Low maintenance production technology reduces downtime and saves about 15000 yuan in annual maintenance costs compared to electric hoists (taking medium-sized equipment as an example).

3、 Typical application scenarios

Petrochemical industry: Lifting chemical containers in refineries and chemical plants to avoid electrical sparks causing explosions.

Coal mining: Lifting equipment and materials in underground tunnels to adapt to humid and dusty environments.

Automobile manufacturing: Lifting heavy components such as engines and bodies on the assembly line to improve assembly efficiency.

Shipbuilding: Lifting ship sections in the dock to adapt to high-altitude and narrow space operations.

Logistics warehousing: Quickly loading and unloading goods in the warehouse to improve logistics turnover.

The main equipment produced by Hebei Makita: stage electric hoist, electric chian hoist, wire rope electric hoist，Hand chain hoist, lever hoist, pneumatic hoist and other lifting equipment