Friends who know about claw jacks should be familiar with the appearance of claw jacks. As a vertical jack, claw jacks not only have a special appearance structure, but also have a special device, which is the double spring device. This device is not available on traditional jacks. So what is the double spring device used for?

Firstly, let's observe the position of the spring device. The double springs of the claw jack are located on both sides of the entire column, with the upper end connected to the top support of the jack and the lower end connected to the base of the jack. In the initial state, the double springs are in a contracted state. When we press the handle of the jack, the double springs begin to stretch and apply a reverse force, which is the change of double paralysis during the operation of the jack.

So what does this change bring to claw jacks? It is safe and efficient. When we release pressure, the claw jack cannot receive the downward force from the top support, so there is a certain safety hazard in the return stroke. The spring device precisely solves this problem. Under the action of the retraction force, it can always give a return force perpendicular to the top support, ensuring the safety of the claw jack's reset.