How does a hydraulic elevator operate?

A hydraulic elevator operates by utilizing a hydraulic piston to raise and lower the cab. In this system, hydraulic fluid is pumped into a cylinder, where it pushes a piston upward. This action raises the elevator car. When the elevator needs to descend, the hydraulic fluid is released back into a reservoir, allowing gravity to assist in lowering the cab. This method provides a smooth and efficient way to move the elevator, especially in low-rise buildings where space is often available for the hydraulic machinery.

The hydraulic system is effective for providing substantial lifting power with a relatively simple design, making it ideal for applications where higher speeds or greater heights, which electric elevators handle, are not required.