Hydraulic lifter working principle Hydraulic oil is formed by a vane pump to a certain pressure. After the oil filter, flameproof electromagnetic directional valve, throttle valve, hydraulic check valve and balance valve enter the lower end of the hydraulic cylinder, the piston of the hydraulic cylinder is upward. Movement, lifting heavy objects, the oil return of the upper end of the liquid cylinder is returned to the fuel tank by the flameproof electromagnetic directional valve, its rated pressure is adjusted through the overflow valve, and the pressure meter reads the value through the pressure gauge.
The piston of the cylinder moves downwards (both weights drop). The hydraulic oil enters the upper end of the hydraulic cylinder through the explosion-proof electromagnetic reversing valve. The return oil at the lower end of the hydraulic cylinder is returned to the tank by the balance valve, the hydraulic-controlled 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. A balancing valve is set on the return oil road to balance the circuit and maintain the pressure so that the falling speed will not change due to heavy objects. The flow 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, hydraulic lock, to ensure safe self-locking when the hydraulic line accidentally burst. An overloaded voice-activated alarm was installed to distinguish between overload or equipment failure.
The electrical control system controls the rotation of the motor through the explosion-proof buttons SB1-SB6, the commutation of the flameproof electromagnetic directional valve to keep the load from increasing or decreasing, and adjust the time delay through the “LOGO†program to avoid the frequent start of the motor. Service life.
The piston of the cylinder moves downwards (both weights drop). The hydraulic oil enters the upper end of the hydraulic cylinder through the explosion-proof electromagnetic reversing valve. The return oil at the lower end of the hydraulic cylinder is returned to the tank by the balance valve, the hydraulic-controlled 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. A balancing valve is set on the return oil road to balance the circuit and maintain the pressure so that the falling speed will not change due to heavy objects. The flow 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, hydraulic lock, to ensure safe self-locking when the hydraulic line accidentally burst. An overloaded voice-activated alarm was installed to distinguish between overload or equipment failure.
The electrical control system controls the rotation of the motor through the explosion-proof buttons SB1-SB6, the commutation of the flameproof electromagnetic directional valve to keep the load from increasing or decreasing, and adjust the time delay through the “LOGO†program to avoid the frequent start of the motor. Service life.
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