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Which part of the working principle of the lifting platform
Hydraulic oil of a lifting platform is pumped by a vane pump to form a certain pressure. After the oil filter, explosion-proof electromagnetic reversing 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 through 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 weight drops).
The hydraulic oil of the second hydraulic lifting platform enters the upper end of the liquid cylinder through the explosion-proof electromagnetic directional valve, and the oil return at the lower end of the liquid cylinder is returned to the oil tank through the balance valve, the hydraulic-controlled check valve, the throttle valve, and the explosion-proof electromagnetic directional 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 lifting platform safe and reliable, and prevent accidents, increase the hydraulic control one-way valve, that is, the hydraulic lock, to ensure safe self-locking when the hydraulic pipeline 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 reversing of the flameproof electromagnetic reversing valve to keep the load from increasing or decreasing, and adjusting the time delay amount through the "LOGO" program to avoid frequent starting of the lifting platform. Affect the service life.
The use of hydraulic lifting platform maintenance
The lifting platform must be maintained every month. Each part is filled with some lubricating oil to extend the service life of the bearing. When the lifting platform is raised to the home position, the hydraulic oil should be 40 to 50 mm above the bottom of the tank. If it is found that the hydraulic oil is darkened, sticky, or has gravel foreign matter, it should be replaced (32# hydraulic oil). At the end of year maintenance of the lifting platform, check all hydraulic pipes and joints. The pipes must not be damaged. The joints must not be loosened. All joints must be tightened. Remove and disassemble the lifting platform drop valve, blow the plunger with compressed air, and then Put on, replace the hydraulic oil, replace the oil filter by tightening the joint, wash it, clean it with compressed air, and put it back in the tank and connect the pipe. (In the new oil, do not continue to use the old oil, otherwise the moving parts in the hydraulic lifting platform system will accelerate wear.)
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