What additional component is found in a conventional hydraulic elevator pit along with spring buffers and limit switches?

In a conventional hydraulic elevator pit, the presence of a drip collection pan or oil return system is essential for managing hydraulic fluid. When hydraulic elevators operate, they use oil to move the piston that raises and lowers the car. Over time, some oil may leak or be expelled from the hydraulic system. The drip collection pan serves as a containment measure to catch any oil that may leak, preventing it from causing environmental issues or creating hazards in the elevator pit.

This oil return system is crucial for maintaining proper hydraulic function and ensuring the elevator’s operation remains safe. The proactive containment and return of oil can help extend the life of the hydraulic system and maintain efficiency, which is why it is a critical additional component in the elevator pit.

The other components listed may be important in other contexts, but they do not specifically address the management of hydraulic fluid like the drip collection pan does.