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The principle of lifting platform rising and falling

by:Powerston     2021-07-12
Everyone is familiar with the principle of the lifting platform, but how much do you know about lifting cage and lowering separately? The designer of the strong crown lifting platform will explain to you the decomposing action principle of the lifting platform. The lifting action is controlled by the lifting button to control the contactor suction, and the electric motor power supply is turned on to drive the hydraulic pump (commonly used hydraulic pumps are gear pumps and vane pumps) Work, under the pressure of the hydraulic pump, the hydraulic oil enters the lower end of the hydraulic cylinder through the oil filter, explosion-proof electromagnetic directional valve, throttle valve, hydraulic control check valve, balance valve, and explosion-proof valve. The hydraulic oil acts on the lower end of the hydraulic cylinder. The piston pushes the piston rod upward to drive the lifting platform to rise. The oil return from the upper end of the hydraulic cylinder returns to the oil tank through the flameproof electromagnetic reversing valve. The rated pressure is adjusted by the overflow valve, and the pressure gauge reading is observed through the pressure gauge. When reaching the set position of the lifting platform, the contactor control circuit power supply is disconnected through the travel switch, the contactor is disconnected, the power supply of the electric motor is cut off, and the lifting platform stops at the designated position. In the descending action, the pressure relief circuit electromagnetic reversing valve is connected through the descending button and the relay. Under the action of the lifting platform's own gravity and the cargo gravity, the piston rod of the hydraulic cylinder moves downwards under the action of pressure (in some cases requiring fast descending speed) Workplace. When lowering, the electric motor should also be operated. The pressure of the electric motor is used to increase the oil return speed, so that the lowering speed of the lifting platform is accelerated. The oil returns to the oil tank through the balance valve, hydraulic control check valve, throttle valve, and explosion-proof electromagnetic reversing valve. When reaching the designated position, cut off the power supply of the pressure relief circuit electromagnetic directional valve through the stroke switch (the power supply of the electric motor of the lifting platform that requires the operation of the electric motor should also be cut off), and the lifting cage platform will stop at the designated position. The editor reminds you that in order to make the heavy objects fall smoothly and brake safely and reliably, a balance valve is installed on the oil return path to balance the circuit and maintain the pressure so that the descending speed is not changed by the weight. The throttle valve adjusts the flow rate and controls the construction lift. speed. In order to make the brake safe and reliable, and prevent accidents, a hydraulically controlled one-way valve, that is, hydraulic lock, is added to ensure that it can be safely self-locked when the hydraulic pipeline bursts accidentally. An overload sound-activated alarm is installed to distinguish overload or equipment failure.
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