Hydraulic Elevator
Hydraulic lifts have been the most common type of lifting mechanism used in buildings throughout the second half of the 20th century. They work on the principle of an electrically powered pump that pushes pressurized hydraulic fluid – typically oil — to a jack lifting system. A piston within a cylinder at the base of the elevator pushes the car up and down.
Provide a superior control mechanism. It also makes the lift shaft process visible, making it easier to maintain and safer to operate. This will provide a good, albeit expensive, long-term lifting option.
Shaft requires about 10 per cent less area. These lifts are also more effective when high loads need to be moved, as the hydraulics provide a greater lifting force than traction ropes.
One of the main disadvantages of a hydraulic elevator is its slow speed. It usually cannot travel at speeds higher than 150 feet per minute (on larger travels). The performance of the oil as a hydraulic fluid varies with temperature, so an efficient machine-room control system is necessary. This type of elevator is a high-heat producing system. The oil may
also leak into the ground at the base of the elevator and cause pollution in ground water
Hydraulic Advantages and Disadvantages
Hydraulic Lifts are usually cheaper to install than the traction variety. They also occupy less space in a building, as the lift Traction Lifts is essentially a box on steel ropes that are looped around sheaves connected to an electric motor. The sheaves have a counterweight attached at their end to balance the load of the elevator car. Traction on the ropes raises and lowers the elevator.
The same result is provided by both versions of elevators. The choice between the two depends on cost, maintenance and the types of building within which the elevator is to be installed.