Structure: A hydraulic bottle jack consists of a vertical cylinder, which houses a pump plunger. The plunger is connected to a handle that you pump to operate the jack.
Hydraulic Fluid: Inside the cylinder, there is hydraulic fluid (usually oil) that fills the empty space around the plunger.
Pressure Generation: When you pump the handle, it pushes the plunger into the cylinder. This action compresses the hydraulic fluid, increasing its pressure.
Transmission of Force: The high-pressure hydraulic fluid exerts force against the larger piston (ram) located at the bottom of the cylinder. This force is transferred to whatever object or vehicle is being lifted.
Lifting Mechanism: As more pressure is applied and the hydraulic fluid continues to push against the ram, the ram extends vertically, thereby lifting the load.
Release Mechanism: To lower the jack, there is usually a release valve that, when opened, allows the hydraulic fluid to flow back into the reservoir, relieving the pressure and slowly lowering the ram.
Stability and Safety: Hydraulic bottle jacks are designed to provide stable lifting, often with a wide base and sturdy construction. They are commonly used in automotive repair and maintenance for lifting vehicles.
Overall, the hydraulic bottle jack operates by converting mechanical force (from pumping the handle) into hydraulic pressure, and then into lifting force via the piston (ram) and hydraulic fluid. This system allows for relatively easy and controlled lifting of heavy objects or vehicles.
