In fact, it should be said that hydraulic jacks are used to lift and hold heavy objects. They are used in large and small industries and their absence will cause serious problems. But what is hydraulics and how is it used in the jack structure?
How is hydraulics used in making a hydraulic jack?
Simply put, the meaning of hydraulics is to be able to do something by pressurizing liquids. This system can be used in open and closed form. When water is used to turn the mill, it is actually using an open hydraulic system, that is, during which the liquid, which is water here, has been used only once. In the closed hydraulic system, the liquid in question is placed in a fixed and specified circuit and its movement is only limited to the same space. In these cases, the desired liquid is usually oil. This system is used in the hydraulic jack structure. The hydraulic system is used in the braking of cars, giant cranes, excavators, mobile bridges, aviation industries, etc. This system has a simple design, is easy to use, has the ability to increase power, has good flexibility, and has high efficiency.
How does a hydraulic jack work?
In short, it should be said that a hydraulic jack is a collection of oil and metal parts. A lever (pedal) is designed for that, which can be pressed by the foot. Each time you do this, the car will move up. There is a cylinder at the end of the jack, every time you press the pedal, this cylinder moves up. The movement of the cylinder has a start and end point. When you put pressure on the oil from one side, the liquid will deliver the same force to you from the other side.
To understand the operation of hydraulic jacks, you must be familiar with physics. According to Pascal's law, the pressure is the same throughout a fluid and is applied perpendicularly to it. When fluids are placed in a closed environment and pressure is applied to them, this pressure will exist on the entire surface. In physics, pressure is equal to the force divided by the surface unit. The amount of pressure in all parts of the oil (as a fluid) is the same and only the levels are different. It means that you put constant pressure on different levels. In this way, there is an opportunity to increase or decrease the amount of force based on the individual's ability.
In simple terms, this issue can be expressed as follows: a part (cross section) of the hydraulic jack which, under The pressure of the car's weight is placed on it, it has a high cross-sectional area, and the part that must move the pedal has a small cross-sectional area. Based on what was said, the amount of pressure is the same for them. Therefore, a small cross-section will require less force and a larger cross-section will require more force. In this way, by creating a small force in a small cross-sectional area, you will overcome a large force in a larger cross-sectional area.
What are the advantages of a hydraulic jack?
1- Hydraulic jacks have different designs and generally do not require a lot of space for operation.
2- Their design is simple and they are easy to use.
3- They are considered the best option for moving and lifting heavy objects.
4- They have a lighter weight than other jacks.