Views: 0 Author: Site Editor Publish Time: 2024-04-17 Origin: Site
Hydraulic jacks and screw jacks use two completely different working principles, one is the Pascal hydraulic transmission principle, and the other is the screw pair transmission principle. Under the action of two working principles, the output can be greatly increased and the force output can be reduced at the same time, thereby achieving the purpose of labor saving.
Although the force transmission principles of the two jacks are completely different, their force drive is basically the same, that is, both jacks use the lever principle. Next, let’s take you through the role of the lever principle in the two types of jacks.
First, let's understand how leverage works. A lever is a simple machine. A stiff rod can rotate about a fixed point under the influence of force. This stiff rod is a lever. The lever principle is divided into labor-saving lever and labor-saving lever. The length from the fixed point to the resistance part is less than the length from the fixed point to the force-bearing part. This is a labor-saving lever, otherwise it is a labor-intensive lever.
Both jacks feature low-effort levers. When pressed, the labor-saving lever of the hydraulic jack acts on the opening and closing of the two oil valves, which is the power source for hydraulic fluid transmission. The labor-saving rod of the screw jack drives the rotation of the gear. The rotation of the gear drives the internal gear set and the screw to rotate simultaneously, thereby achieving the purpose of lifting through the screw pair transmission.
In fact, whether it is hydraulic transmission or gear transmission, they all require kinetic energy to drive. After all, it is the lever principle. This shows the importance of the lever principle to the jack.