What is a hydraulic lift?

In the hydraulic lift, there is a pump that sends the oil from the tank to the cylinder under pressure. As a result of this, pressure is applied to the piston and the elevator cabin moves up. As the elevator approaches the desired floor, the control system sends a signal to the motor, and the hydraulic valve and control valves are closed, and the cabin stops with constant pressure. For the elevator to go down, the control system sends a signal to the valve again. When the valve opens, the way for the oil to return from the cylinder to the tank is opened. The weight of the elevator cabin and its passengers puts pressure on the piston and causes the oil to return to the tank. To stop the elevator, the valve is closed again and the cabin stops at the desired floor.

In order to know which hydraulic elevator is suitable for which buildings, we must first be familiar with its features. The first thing is the speed of these elevators, which is something between 0.125 and 1 meter per second; The most common speed is 0.6 m/s. The second thing is that hydraulic elevators need a lot of energy to go up. These two features make these elevators to be used more for buildings up to 5 floors.

Because it has a jack, there is no chance of it falling and it has a high safety factor Due to the fact that the weight is not balanced, it occupies less space It does not need an engine room on top of the building High capacity for moving cargo The possibility of using all-glass cabins in direct jack Saving electricity Its lowering system is without motor and by gravity The silence and smooth movement of the elevator Easy access to the elevator motor if needed Low depreciation and durability of parts Ability to adjust the speed of the elevator Soft stop and cabin level Stop and start moving without impact and shock

Types of hydraulic elevators can be classified in two ways. In one category, hydraulic elevators are divided into direct jack from below, direct jack from the side, and indirect jack from the side, and in another category, they are divided into elevators with wells, without wells, ropes, and rumless (without room).

This type of elevator is suitable for buildings that have limited space to install the elevator pit. The direct jack elevator from below because it does not need to install the weight frame and other things around the cabin, and all the well space can be allocated to the elevator cabin. Of course, it should be taken into account that in order to install these elevators, since the jack is located below, the ground must be dug half a meter more than the moving path.

In the direct hydraulic lift of the jack from the side, there is no need to dig the ground half a meter more like the jack from below; But because the jack is placed in the armpit, we have to allocate a part of the well space to the jack, and as a result, the dimensions of the elevator become smaller. However, these elevators still occupy less space than traction elevators

Hydraulic jack lifts are used for more floors. This elevator model needs a shorter jack than the straight jack from below. In jack models, it moves twice as much as the jack from the side of the cabin. That is, if the jack moves half a meter, the cabin moves 1 meter. Unlike the previous two models, this model works with a tow wire and needs a parachute and governor to increase safety and prevent falling.

When buying and ordering, it is better to keep the following points in mind: Type of use of the elevator: passenger, car, stretcher, porter, etc. Elevator capacity: The elevator capacity is directly related to the dimensions of the cabin The material of the elevator cabin The number of elevator cabin doors: which affects the weight of the elevator The number of floors in the building The length of the movement path: the distance between the first and last floor Overhead: The distance between the floor of the first floor and the highest point of the elevator shaft The depth of the hole The price of hydraulic lift