What is the working principle of hydraulic lifting platform?

Working principle of hydraulic lifting platform;

Hydraulic lifting platform is widely used in automobile, container, mold manufacturing, wood processing, chemical filling and other industrial enterprises and production lines to meet the lifting requirements of different working heights. At the same time, it can be equipped with a variety of table forms (such as ball, roller, turntable, steering, tipping and expansion), and has a variety of control methods (transfer, linkage and explosion-proof), which has the characteristics of stable and accurate lifting, frequent start and large load capacity.

The hydraulic oil forms a certain pressure through the vane pump, enters the lower end of the hydraulic cylinder through the oil filter, the flameproof electromagnetic directional valve, the throttle valve, the hydraulically controlled one-way valve and the balance valve, so that the piston of the hydraulic cylinder moves upward to lift the heavy objects. The oil returned from the upper end of the hydraulic cylinder returns to the oil tank through the flameproof electromagnetic directional valve, and its rated pressure is adjusted through the overflow valve, and the reading of the pressure gauge is observed through the pressure gauge.

The piston of the hydraulic cylinder moves downward (i.e. the weight drops). Hydraulic oil enters the upper end of the hydraulic cylinder through the explosion-proof electromagnetic directional valve, and the return oil from the lower end of the hydraulic cylinder returns to the oil tank through the balance valve, the hydraulic control check valve, the throttle valve and the explosion-proof electromagnetic directional valve. In order to make the heavy objects descend smoothly and the braking is safe and reliable, a balance valve is set on the oil return path to balance the circuit and maintain the pressure, so that the descending speed is not affected by the heavy objects, and the vertical speed is controlled by adjusting the flow through the throttle valve. In order to make the braking safe and reliable and prevent accidents, a hydraulic control one-way valve, namely a hydraulic lock, is added to ensure that the hydraulic pipeline can be safely self-locked when it accidentally bursts. An overload sound alarm is installed to distinguish between overload and equipment failure.

Lifting platform is a multifunctional lifting and loading and unloading mechanical equipment, which can be divided into fixed and mobile, guide rail and crank arm. The fixed lifting platform includes scissor lifting cargo ladder, chain elevator, loading and unloading platform and auxiliary electric construction platform.

The hydraulic oil forms a certain pressure through the vane pump, enters the lower end of the hydraulic cylinder through the oil filter, the flameproof electromagnetic directional valve, the throttle valve, the hydraulically controlled one-way valve and the balance valve, so that the piston of the hydraulic cylinder moves upward to lift the heavy objects. The oil returned from the upper end of the hydraulic cylinder returns to the oil tank through the flameproof electromagnetic directional valve, and its rated pressure is adjusted through the overflow valve, and the reading of the pressure gauge is observed through the pressure gauge.