The pressure of the hydraulic oil of the working hydraulic lifting platform is certain. The vane pump, oil filter, explosion-proof electromagnetic directional valve, throttle valve, hydraulic control one-way valve, and balance valve enter the lower cylinder, and the piston of the hydraulic cylinder moves upward to increase the weight. The oil return of the upper cylinder is returned to the fuel tank through the explosion-proof electromagnetic directional valve, and the rated pressure is adjusted through the overflow valve, and the reading of the pressure gauge is observed. Advantages: The hydraulic lifting platform has a compact structure, a wide operating range, high efficiency, safety and reliability It can be widely used in the operation of transportation vehicles. The hydraulic lifting mechanism is mainly composed of an oil source control device, a controller, a hydraulic cylinder, a lifting arm, a square tube, and a platform. Principle: The hydraulic lifting platform adopts a hydraulic drive mode, through The high-pressure pump DC motor driven by the battery power of the freight car, the battery power is the hydraulic oil of the high-pressure hydraulic energy, the solenoid valve is used to control the movement of the hydraulic cylinder, so that the high-pressure hydraulic energy is converted into mechanical energy, and the four-bar linkage mechanism is driven to move the lifting platform to complete The translation of upward, upward and downward rotation motions. Design points: The design of the actuator is an important link in the design of the hydraulic lifting platform, and the selection and determination of the actuator is the key. According to the role of the hydraulic lifting platform, the actuator should It has the characteristics of up and down movement and rotation, that is, the lifting platform should move in a plane according to a certain law. The connecting rod mechanism can meet this requirement. Through the movement of the piston rod of the hydraulic cylinder, the platform o-0 moves the platform vertically up and down, and the Piston rod movement working mode: the lifting platform can be properly controlled, and the platform can be lifted up and down. When the platform is in the lowest position, it can move down. As long as the position of the parallelogram mechanism and the entire body is determined, the structure design The lifting cage
load analysis in is the basic step of load analysis, and the main basis for selecting and determining the driving mode. The force analysis of the rotating hydraulic cylinder to the rotating hydraulic cylinder can be analyzed through the isolation platform, and the hydraulic components are easy to use and standardize.
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