A hydraulic elevator refers to an elevator that uses a hydraulic power source to press oil into the cylinder to make the plunger move in a straight line, directly or indirectly through a wire rope to move the car. Hydraulic elevator is an integrated product of machinery, electricity, electronics and hydraulics. It is composed of relatively independent but interconnected systems such as pump station system, hydraulic system, guiding system, car, door system, electrical control system, safety protection system, etc. .

Advantages of hydraulic elevator:

1. Low civil engineering requirements and high shaft utilization.

The hydraulic elevator has low requirements on the civil structure. It does not require a machine room, only a load-bearing wall, and has low requirements on the top level. The foundation pit can also be very shallow. Because the hydraulic home elevator has low requirements for civil construction, it has just been introduced to China Time quickly occupied most of the home elevator market.

2. High security.

The hydraulic elevator will not overspeed and lose control, and it is easy to realize self-rescue for trapped people. There will be no rushing or squatting. As long as the mechanical structure design is reasonable, the installation is reliable, the safety factor of the hydraulic elevator is relatively high, and the hydraulic elevator can use backup batteries. To realize the self-rescue function of the trapped people, when the elevator fails or the power outage traps people, press the emergency button inside the car, and after the hydraulic oil is connected to the drain valve circuit, the hydraulic oil will slowly return to the tank, and the elevator will slowly rely on its own weight. decline.

Disadvantages of hydraulic elevator:

1. There is certain motor noise.

If the pump station is not isolated or close to the hoistway, there will be some noise when the oil pump motor works when the elevator starts up.

2. Hydraulic oil may leak

After the service life of the domestic oil cylinder piston seal ring, there will be the possibility of wear and tear, if it is not regularly replaced, the hydraulic oil will leak.

3. High installation and debugging requirements.

The comfort of the hydraulic elevator should be determined according to the installation and commissioning situation, which requires higher skills and experience of the installation workers than other elevator platforms.

The early villa elevator were basically hydraulic elevators, but the Chinese market has a high population density and high floor heights. Hydraulic elevators are not suitable for the needs of high floors in the Chinese market.