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Mechanical System Of Hydraulic Pump

Hydraulic pump is the power source of hydraulic system. The basic conditions of the hydraulic pump are: With variable sealing volume, coordinated oil-distributing mechanism, and the structure of high and low pressure cavities isolated from each other. The main performance parameters of the hydraulic pump and the hydraulic motor are: displacement, flow, pressure, power and efficiency, the displacement is the geometrical parameter, and the flow rate is the product of the displacement and rotational speed; the actual working pressure depends on the external load; Hydraulic power is the output flow of the pump Volumetric efficiency and mechanical efficiency respectively reflect the volume loss and mechanical loss of the hydraulic pump and motor.Hydraulic Pump

Hydraulic pump and hydraulic motor according to the different structure form, mainly divides into the gear type, the vane type, the plunger type three main categories, must master each kind of pump, the motor working principle, the displacement and the flow computation method, understood its structure characteristic. Plunger pump is the most perfect performance, pressure and efficiency of the hydraulic pump; High performance vane pump with small pulsation, low noise and good; the most characteristic of the gear pump is anti-pollution, which can be used in the environment with bad working conditions.Hydraulic Pump

Hydraulic motor is one of the important actuators in the hydraulic system, in principle, the hydraulic motor is the reverse working condition of the hydraulic pump. It is important to understand the structural features and applications of low-speed large torque motors (Crank-link motors, static balancing motors, and multi acting internal curve motors).Hydraulic Pump

In the case of mechanical system, if there is malfunction, it will definitely cause the additional vibration of the system. Vibration signal is a dynamic signal, it contains rich information, it is suitable for fault diagnosis. However, it is very important to extract the useful signal from the vibration signal if the additional vibration signal is flooded by the disturbance caused by the intrinsic signal or the external interference.Hydraulic Pump

The working pressure of the hydraulic pump depends on the external load, if the load is zero, then the working pressure of the pump is zero. With the increase of oil discharge, the working pressure of the pump is increased automatically according to the load size, the maximum working pressure of the pump is mainly limited by the structure strength and service life. In order to prevent the pump and the system from being too high, the outlet of the hydraulic pump often has to adopt the pressure limiting measure.Hydraulic Pump