# How does a spiral jack work?

Editor：Lituo Machinery │ Release Time：2024-02-12

A spiral jack is a common tool used to lift heavy objects, which utilizes the spiral principle to achieve the lifting function. The working principle of a spiral jack is very simple, but very effective. Next, we will introduce the working principle of screw jack in detail. So let's start with the screw jack.

## Structure of a screw jack

A screw jack is usually composed of a body, handle, screw, jack shell and base. Inside the body of a screw jack is a screw that rotates when the handle rotates. One end of the screw is connected to the jack housing and the other end is connected to the base. When the screw rotates, the distance between the jack shell and the base becomes progressively smaller or larger, thus realizing the function of lifting or lowering heavy objects.

## Working principle of screw jacks

The working principle of the screw jack is based on the mechanics of the screw. When the handle is rotated, the screw will move forward or backward, thus changing the distance between the jack shell and the base. According to the helix principle, the force applied to the screw is converted into a force along the direction of the screw, resulting in the effect of lifting or lowering a heavy load. Simply put, screw jacks utilize the mechanics of the helix to transfer the force generated by the rotation of the handle to the screw, which in turn generates the force to lift or lower the weight.

## Application of screw jack

Screw jacks are usually used in automobile repair, building construction, mechanical equipment maintenance and other fields. In automotive maintenance, screw jacks are often used to lift cars for tire replacement, chassis repair and other operations. In building construction, screw jacks are often used to lift heavy objects or adjust the height of the building. In machinery and equipment maintenance, screw jacks are often used to lift equipment or mechanical parts for repair or replacement.

## Summarize

Screw jacks use the mechanics of the spiral to achieve the function of lifting or lowering heavy objects, and its working principle is simple and effective. Screw jacks have a wide range of applications in automotive repair, building construction, mechanical equipment maintenance and other fields, providing convenience for people's work and life. We hope that through the introduction of this article, you have a deeper understanding of the working principle of the screw jack.

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