Digital pulse variable axial plunger pump

[0012] Such as figure 1 , The digital pulse variable axial plunger pump of the present invention includes a pump body 1, an oil distribution plate 2, a cylinder body 3, a plunger 4 arranged in the cylinder body 3, a sliding shoe 5 installed at the end of the plunger 4, and a return stroke Disk 6, pump casing 7, drive shaft 8 and variable control device 9. Cylinder block 3 is installed at the end of drive shaft 8. The end of drive shaft 8 is fixed on the center line of return disk 6 by steel ball 10, variable control The device 9 includes a variable head 11, a thrust plate 12, a variable shaft 13 and an adjusting screw 14. The axial piston pump is also provided with a transition body 16. One end of the transition body 16 is fixedly connected with the flange 15 and the other end is connected with a straight line Stepper motor 18, the main shaft of the linear stepper motor 18 is fixedly connected with the taper pin 17, the other end of the taper pin 17 is connected with the adjusting screw 14, the linear stepper motor 18 is connected with the rotary encoder 19, and the transition body 16 is connected with the flange. An O-ring 20 is arranged between 15. In the digital pulse variable axial plunger pump of the present invention, the plunger 4 reciprocates along the inclined surface of the thrust plate 12 to complete the oil suction and discharge work. The linear stepping motor 18 works according to the instructions of the rotary rotary encoder 19 and rotates the adjusting screw 14. The variable shaft 13 connected with the adjusting screw 14 is moved down or up, thereby changing the slope angle of the variable head 11 to change the pump oil volume. The input digital pulse flow rate is proportional to the pump output flow rate. The present invention adopts rotary encoding The controller controls the linear stepping motor, which has better stability than the traditional variable axial piston pump, high frequency response, no lag, and can communicate well with PLC and PCC machines for remote control.