The main body (see the structural section) drives the cylinder to rotate by the transmission shaft, so that the seven plungers evenly distributed on the cylinder rotate around the centerline of the transmission shaft, and the slide shoes in the column slide assembly are pressed against the variable head by the central spring ( Or swash plate). In this way, the plunger of the oblique axis type piston pump reciprocates with the rotation of the cylinder to complete the oil suction and oil pressure action.
In the quantitative mechanism, the swash plate is always fixed on the quantitative end cap, and the stroke of the plunger cannot be changed, so the flow rate is fixed. The pump can be used as an oil motor just by changing the oil pan.
This graded variable piston pump relies on internal control (or external control) oil pressure to operate the variable mechanism. 3~4Mpa时产生变量后，流量迅速减小至所要求的高压流量值。 The pressure adjustment range of the pump is relatively small. After the oil pressure is variable at 3 ~ 4Mpa, the flow rate is quickly reduced to the required high-pressure flow value. This pump is actually equivalent to a high and low pressure combined pump. The driving power selection of the pump can be calculated by referring to the power selection method of the pressure compensated variable pump. When adjusting the characteristics of the variable, adjust the adjusting sleeve according to the required flow rate and pressure change range, so that the flow rate at the final pressure of the pump no longer changes, and then adjust the adjustment screw to make the initial pressure meet the requirements when the pump flow rate has just changed.