Chain hoist is a lifting device that transmits torque through a chain. Its working principle combines mechanical transmission and mechanics. The following is a detailed analysis of its core operating mechanism:

1、 Core structure and transmission principle

Chain wheel chain system

A chain hoist is composed of two or more chain wheels connected by a closed-loop chain. The sprocket is equipped with teeth that mesh with the chain, and the chain moves up and down through the rotation of the sprocket.

Manual and electric drive

Manual chain hoist: By manually pulling the chain, the sprocket is driven to rotate. The internal gear system (such as planetary gears) amplifies human power, achieving small force to lift large loads.

Electric chain hoist: driven by a motor, the sprocket rotates and can be raised or lowered through a control button or remote control. It is suitable for high-frequency and high load scenarios.

brake rigging

Using a ratchet or friction plate brake, the chain is automatically locked when stopped to prevent accidental drops of the load. Some models are equipped with dual braking systems to ensure safety redundancy.

2、 Principles of Mechanics and Efficiency

Leverage amplification effect

The manual hoist amplifies manpower by 5-10 times through a gear system (such as 3-5 gear reduction). For example, applying a tensile force of 100N can increase the load by 500-1000N.

The load-bearing advantage of chains

The chain is made of high-strength alloy steel, and the safety factor is usually 4-8 times the rated load. Its flexible design can adapt to complex installation angles and is not easy to slip like steel wire ropes.

3、 Work scenarios and advantages

Typical applications

Construction site: hoisting building materials, equipment installation.

Warehouse logistics: goods shelving, container loading and unloading.

Manufacturing industry: mold replacement, equipment maintenance.

Performance advantages

Strong environmental adaptability: dustproof and waterproof rating up to IP65, suitable for outdoor or dusty environments.

Low maintenance cost: no complex oil or electrical circuits, low failure rate.

Flexible installation: Supports various installation methods such as suspension and trolley.

4、 Operating standards and safety

Load limit

Overloading is strictly prohibited, and the rated load (such as 0.5-60 tons) needs to be regularly verified.

Environmental adaptation

Avoid using on strong winds or unstable surfaces to ensure the load-bearing capacity of the suspension point.

maintenance inspection

Daily inspection of chain wear, brake flexibility, and lubrication status.

5、 Technological Evolution and Innovation

Intelligent control: Some electric hoists integrate overload protection and wireless remote control functions.

Material upgrade: Using titanium alloy chains to reduce weight and improve corrosion resistance.

Modular design: supports quick replacement of vulnerable parts such as chains and brakes.

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