What is the difference between a hydraulic lifting column and a pneumatic lifting column?

The automatic lifting column has gradually developed into a common automated vehicle passage control product since the end of the 20th century. Compared with the traditional railing gate equipment, the automatic lifting column not only retains the warning function, but also provides practical interception and blocking functions, which eliminates the occurrence of the punching rod collision event and eliminates the daily operation in the application place. The distance between the two ends of the widened channel is limited; compared with the traditional translational swing door machine, it has a high opening and closing speed; compared with the traditional flapper, it can also pass the safety guarantee of the collision test. Meet the increasing requirements of the overall aesthetic coordination of municipal and police venues. Today we mainly introduce the two types that are more common nowadays, namely the hydraulic lifting column and the pneumatic lifting column. The hydraulic and pneumatic lift columns look exactly the same, but the power unit or power source is different.

The hydraulic automatic lifting column is formed by the vane pump to form a certain pressure. The oil filter, the explosion-proof electromagnetic reversing valve, the throttle valve, the hydraulic control check valve and the balance valve enter the lower end of the liquid cylinder, so that the piston of the liquid cylinder moves upward. Lifting the heavy object, the oil returning from the upper end of the liquid cylinder is returned to the fuel tank through the explosion-proof electromagnetic reversing valve, and the rated pressure is adjusted through the overflow valve, and the pressure gauge reading value is observed through the pressure gauge. The piston of the cylinder moves downwards (both heavy objects drop). The hydraulic oil enters the upper end of the liquid cylinder through the explosion-proof electromagnetic reversing valve, and the oil returning to the fuel tank is returned to the fuel tank through the balance valve, the hydraulic control check valve, the throttle valve and the explosion-proof electromagnetic reversing valve. In order to make the weight drop smoothly, the brake is safe and reliable, and a balancing valve is arranged on the oil returning road to balance the circuit and maintain the pressure so that the falling speed is not changed by the heavy object, and the flow rate is adjusted by the throttle valve to control the lifting speed. In order to make the brake safe and reliable, prevent accidents, increase the hydraulic control check valve, that is, the hydraulic lock, to ensure safe self-locking when the hydraulic line accidentally bursts.

The pneumatic automatic lifting column is installed centrally, and the power unit is controlled by the control box. The control box can drive and control up to 8 lifting columns, saving the system cost for the user. The pneumatic automatic lifting column lifting speed can be actively adjusted through the control box according to the demand. The fastest reaction speed is less than 1 second. It can fully meet the control requirements of high frequency entrance and exit and high safety emergency channel, and support motion change and avoid accidents. occur. The pneumatic automatic lifting column system does not require strong electric construction, and the power supply mode is environmentally friendly, and the safety and reliability are high. Electronic control, automatic lifting; unified control, centralized power and control unit, easy maintenance; air as power supply, very environmentally friendly; high response speed, support motion change; avoid strong electric pipeline construction, high safety; provide higher Combination price/performance ratio.