液压系统在机械工程中的地位及其日常的维修（The hydraulic system in the mechanical engineering status and daily maintenance）.docVIP

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液压系统在机械工程中的地位及其日常的维修（The hydraulic system in the mechanical engineering status and daily maintenance）.doc

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液压系统在机械工程中的地位及其日常的维修（The hydraulic system in the mechanical engineering status and daily maintenance）

液压系统在机械工程中的地位及其日常的维修（The hydraulic system in the mechanical engineering status and daily maintenance） The position of hydraulic system in mechanical engineering and its routine maintenance 1 the composition and structure of the hydraulic system 1.1 components of the hydraulic system 1.1.1 relating to power components: the function is to change the mechanical energy of the prime mover to the pressure of the liquid and to provide power to the entire hydraulic system. 1.1.2 actuator: the actuating element is used to convert the pressure energy of the fluid into mechanical energy and drive the machine into a straight line motion. 1.1.3 control element: it controls and regulates the pressure, flow, and direction of the fluid in the hydraulic system. 1.1.4 accessories: including fuel tank, oil filter, oil pipe, sealing ring, high pressure ball valve, pressure measuring joint, pressure gauge, oil level, oil temperature gauge. 1.1.5 hydraulic oil is the working medium for transferring energy in hydraulic system. There are several kinds of mineral oil, emulsion and synthetic hydraulic oil. 1.2, the composition of the Jinan ticketing The hydraulic system is composed of two parts: signal control and hydraulic power. The signal control part is used to drive the control valve in the hydraulic power part. Hydraulic power part adopts loop way to indicate the relationship among different functional components. The hydraulic source contains a hydraulic pump, an electric motor and a hydraulic auxiliary element. The hydraulic control section contains various control valves for controlling the flow, pressure and direction of the work fluid, and the execution part contains a hydraulic cylinder. 2 general loss of hydraulic system 2.1, about the power pump: the system requires large flow, low pressure; sometimes need small flow, high pressure. It should be adjusted at any time according to the specific requirements. Therefore, the choice of variable pressure pump is appropriate, so that