In a hydraulic elevator, which component is responsible for the car's movement?

In a hydraulic elevator, the hydraulic cylinder is the primary component responsible for the movement of the elevator car. This system operates by using a hydraulic pump to pressurize oil, which then moves a piston within the hydraulic cylinder. When the hydraulic fluid is pumped into the cylinder, it causes the piston to extend or retract, which in turn moves the elevator car up or down.

The hydraulic cylinder's design allows it to convert the hydraulic energy from the fluid into mechanical energy that moves the elevator. This method is particularly effective for low-rise buildings where the height range is limited, as hydraulic systems provide a smooth and controlled movement of the elevator car.

While the hydraulic pump is crucial for generating the pressure needed to operate the system, it does not directly cause the car's movement; it only facilitates the process. The control panel allows the user to select floors and control the elevator but does not contribute to the physical movement. Additionally, elevator cables are used in cable-driven systems, not in hydraulic systems, where the movement relies solely on the hydraulic cylinder and its associated mechanics.