Elevators are often needed, but how much do you know about it? Our topic today is hydraulic elevators. General ordinary elevators use wire ropes to pull the car from above, which is called traction elevator. With hydraulic pressure, what is a hydraulic elevator cylinder lifts the elevator car directly from below and it is a hydraulic elevator. So, what is the principle of hydraulic elevators ? Let's learn about it right away.
[What is a hydraulic elevator]
Hydrauliclifts rely on hydraulically driven elevators. A hydraulic elevator is an elevator that uses a hydraulic power source to press oil into a cylinder to make the plunger move linearly, and directly or indirectly through the wire rope to move the car. Hydraulic elevators are mechanical, electrical, electronic, and hydraulic integrated products and consist of the following relatively independent but interrelated systems. Pump station system, hydraulic system, guide system, car, door system, electric control system, safety protection system
[Hydraulic elevator principle]
1. When the elevator is ascending, the hydraulic pump station provides the power pressure difference required for the elevator to go up. The valve group on the hydraulic pump station controls the flow of the hydraulic oil. The hydraulic oil pushes the plunger in the hydraulic cylinder to achieve the elevator's upward flow. movement;
2. When the elevator descends, open the valve group and use the pressure difference caused by the weight of the car (passenger (cargo)) to return the hydraulic oil to the hydraulic oil tank to achieve the downward movement of the elevator (control by the valve group).
[Hydraulic elevator features]
First, the construction
1. It is not necessary to set up a machine room with high requirements and cost above the hoistway.
2, the room is flexible. The hydraulic transmission system relies on the oil pipe to transmit power. Therefore, the position of the engine room can be set within 20m from the hoistway, and the occupancy of the engine room is only 4 to 5m2.
3, The shaft structure requires low strength. Because of the vertical load of the hydraulic elevator car, such as its own weight and load, all of the hydraulic cylinders act on the shaft foundation, which requires low building performance on the top of the shaft.
Second, technical performance
1, good security and high reliability.
2. With heavy load capacity, the hydraulic lift lifts the car by the principle of hydraulic jacks. It can use several oil tanks to lift the car with super heavy load at the same time.
3, The noise is low, the hydraulic system can be set far from the hoistway, and the noise source is isolated.
Third, the use of maintenance
1. The failure rate is low. For direct acting hydraulic elevators, the structure is simple and the failure rate is low.
2. It is easy to rescue. When the hydraulic elevator descends, it is driven by the pressure generated by its own weight. When the power failure or fault occurs, the emergency down valve can be opened to achieve emergency rescue.
[Hydraulic Elevator Applications]
(1) Hotels, office buildings, libraries, hospitals, laboratories, low-rise residential buildings.
(2) Car elevators for garages and parking lots.
(3) The old house renovation project that requires additional elevators. Since the reconstruction of old houses is limited by the original civil structure, the use of hydraulic elevators is the best choice.
(4) Classical architecture. The addition of elevators to classical buildings cannot undermine the appearance and inner style of the buildings. Therefore, the use of hydraulic lifts is also a better option.
(5) shopping malls, restaurants, luxury buildings, the above-mentioned buildings are generally used for sightseeing, and many elevators use hydraulic straight top drive.
(6) On diving platforms, oil drilling rigs, ships, and other industrial installations, these devices cannot generally be equipped with a top-level machine room and have a heavy load.
Summary: The above is a collection of some data collected by Xiao Bian on the principle of hydraulic lifts . I hope to help everyone.
Attic Small Elevator Toshiba Elevator Loft Elevator Elevator Brand Stair Lift
Yantai Tianbing Construction Machinery Co., Ltd