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The Working Principle Of The Hydraulic Car Elevator

Update:06-11-2017
Summary:

The working mechanism of the water gun looks simple. Wh […]

The working mechanism of the water gun looks simple. When you pull the trigger, you will apply force to all water in the tube. What is this power to let the water spray out of the nozzle. However, when you pull the trigger, something else happens. The initial force used to pull the trigger is multiplied in the process, which is why the water shoots the gun much more than the force used to pull the trigger.

Like a water gun, the role of a hydraulic car elevator is due to the force applied by one end to another location of the system through hydraulic oil. The advantage of the system is that when the fluid propagates from the first endpoint to the other end, the force is multiplied by this fact. This is why a small amount of pressure can maximize the weight.

Most hydraulic car elevators rely on multiple piston systems. The first piston is used to apply force, and the last piston is used to lift the car. However, the distance between the first piston and the last piston plays a major role in the weight that the lift can handle. Like traditional mechanical levers, the greater the distance between the two end points, the greater the weight.

The thing about the hydraulic system to add (or reduce) the force is usually as simple as changing the size of the first piston relative to the last piston. For example, using a mechanical principle commonly referred to as "distance trading force", a narrow cylinder can be connected to a wider cylinder through a hydraulic line. When the oil is compressed into a wider cylinder, the force needs to travel the distance to decrease, but will still increase in the process.

The oil or water used in the hydraulic system is called an incompressible fluid. This basically means that the density of the fluid is consistent, regardless of how much pressure is applied. On the other hand, the air is easily compressed and unevenly distributed. (Think about what happens when you squeeze a balloon) So when a hydraulic system has bubbles on a line, the whole system is destroyed. Instead of evenly distributed in the oil, the bubbles absorb most of the force. The result is that the second piston is almost no movement, while the car elevator is trying to leave the ground.