Thru shaf aksial piston pump

创建于04.25

Ngaphakathi kwe-shaft axial piston pump

c. Variable displacement pump with auxiliary pump figure B shows the structure of through shaft variable displacement axial piston pump with auxiliary pump. The back end cover of the main pump of the pump is equipped with an auxiliary pump 11, which is used to control the oil replenishment of the variable mechanism and system. The variable cylinder 12 is horizontally arranged perpendicular to the axis of the transmission shaft 1. The bracket type swash plate 3 supported on the semicircular cylindrical roller bearing 2 is adopted. The spherical valve plate is used to distribute the flow. The ball hinge return structure is used by the spring force of the disc spring 4. The axis of the piston cylinder hole is inclined to the center line of the pump transmission shaft. The advantage is that because of the centrifugal force, the plunger group has the component force extending outward from the cylinder bore, which makes it rely on the inclined plate, but it is inconvenient to process. The pump has compact structure and is used for hydraulic pump of closed system. A4V series through shaft pump is this kind of structure. It has many variable ways. The maximum pressure of main pump is 45MPa, and that of auxiliary pump is 4MPa. Its physical shape and hydraulic principle are shown in Figure C.

d. 图D显示了带补油泵的通过轴可变轴向活塞系列双泵的结构。齿轮式油补充泵15与花键轴延伸部分插入后轴的花键孔中，与主泵一起在系统中补充油液。两个可变气缸8和11水平排列，与传动轴1和后轴14平行，斜盘12由可变杠杆7控制，以改变其倾斜角度以实现可变控制；球阀板21用于分配流量；分散弹簧19、22和球铰链17构成回流机制。该泵具有紧凑的结构和高功率密度，适用于挖掘机系统的液压泵。图e显示了该泵的液压原理图。

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