A lever chain hoist is a lifting equipment that combines the principle of leverage and chain transmission. Its working principle cleverly amplifies human power through the lever, achieving small force to lift large loads. The following is a detailed analysis of its core operating mechanism:

1、 Core Structure and Mechanics Principles

Leverage Chain System

The equipment consists of a lever, sprocket, chain, and braking device. One end of the lever is the operating handle, and the other end is connected to the chain through gears or sprockets. According to the principle of leverage, the small force applied to the handle can be converted into a large pulling force at the end of the chain through the long arm.

Formula example:

If the lever arm ratio is 5:1 (the length of the handle is 5 times the length of the chain end), applying a force of 100N can generate a pulling force of 500N.

chain drive

The chain meshes with the sprocket to form a closed-loop transmission, and the tension is transmitted to the load through the chain. The chain is made of high-strength alloy steel, and the safety factor is usually 4-8 times the rated load.

brake rigging

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

2、 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.

3、 Operating standards and safety

Load limit

Overloading is strictly prohibited, and the rated load (such as 0.5-10 tons) should 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.

4、 Technological Evolution and Innovation

Intelligent control: Some models 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