Design And Research On All-ratios-set Hydraulic Distributor

With industrial development, repetitive movements in a lot of power actuators were used. As an important part in the drive or the control process, the high-frequency on-off hydraulic components are widely used in lots of hydraulic systems. Rotary drive, as a new driving method, can greatly reduce the impact of the high speed switch valve in the exchange process. So it can give the on-off switching more flexible. With the switch of rotary on-off state, it can greatly improve the product reliability and to increase its service life.A rotation hydraulic distributor based on the shoulder block was designed in the thesis. Through the axial position adjustment, it can make the oil port how long to connect to high or low pressure. With this,0-100% of this allocation can meet duty cycle ratio. Through the combination of theory and simulation methods, we used a hydrostatic bearing structure for supporting the rotary valve key. With the using of the existing hydraulic system, the hydrostatic pressure in the oil bearing structure can support the rotating shaft well, and make the rotation more smoothly. The theoretical study about the fluid pressure in the process was researched in the thesis. In the subject, we designed a controller for controlling the stepper motor and a variety of signal processing. Our controller can also communicate with host machine, personal computer, making the calculating and graphing more easily.A corresponding test system was built for the project. With this, it can test many performances about the hydraulic distributor. Experimental results show that the flow of the product was very well to meet the design requirements.Also the leakage was got by the experiment.The product can ensure a good distribution from 0-100% duty cycle, and it can make two ports to retain 180°phase difference.Through the experiment, We have accumulated a large number of design experience.In the end,we did the improvement about the distributor.