Lifting structure decomposition and principle analysis of hand chain hoist

First, the structure of the chain hoist

A hand chain hoist is a machine that uses manual power to lift goods. Its main structure includes the following parts:

1.Handle

The handle is the control part of the chain hoist, which uses the lever principle to make the lifting part of the chain hoist work.

2.Bracelet wheel

The hand chain wheel is the power source of the hand chain hoist. When the handle is turned manually, the hand chain wheel will also rotate.

3.Sprocket

The sprocket is a part of the hand chain hoist, and the chain is fixed on the sprocket.

4.Lifting hook

The lifting hook is a key part of the chain hoist, through which goods can be lifted and lowered.

5. Bracelet

The bracelet connects the handle and sprocket and is an important part of controlling the movement of the chain hoist.

6.Chain

The chain links the lifting hook and the hand chain wheel together, and is the final part of the hand chain hoist that can complete the lifting operation.

Second, the principle of improvement

The hand chain hoist relies on the lever principle of human strength to lift goods, and converts gravity into lifting force to complete the lifting operation. The handle drives the sprocket to rotate through the hand sprocket, and the chain raises or lowers the lifting hook under the leadership of the sprocket, thereby lifting the goods.

Third, application and precautions

The hand chain hoist is a mechanical tool widely used in industrial production. It is light, practical, easy to operate, and can lift heavy objects quickly and safely. At the same time, hand chain hoists are also very common in daily life, for example, they can be used in relocation, cleaning, etc. However, when using it, you need to pay attention to the following matters:

1. Cannot be overloaded

The load capacity of the hand chain hoist has its limit, which cannot be exceeded, otherwise serious accidents will occur.

2. Should be fixed with ropes

When lifting heavy objects, ropes need to be used to secure the goods to avoid accidents caused by imbalance of the goods.

3. Keep the chain hoist clean

Hand chain hoists need to be cleaned promptly after use to maintain their good performance and service life.

4. Regular maintenance

In order to extend the service life of the hand chain hoist and ensure its normal operation, it is necessary to regularly inspect and maintain each part of the hand chain hoist, such as lubrication, checking the tightening of each screw, etc.

In short, the hand chain hoist is a commonly used mechanical tool. During use, we need to pay attention to safety, reasonably plan the load capacity, and timely clean and maintain it to ensure its normal operation and bring more convenience to our production and life.