Performance parameters of axial piston pump

轴向柱塞泵的主要性能有压力、排量、转速、效率和寿命等，主要结构参数有柱塞的直径、柱塞数、斜盘倾角等。

The main performance of axial piston pump is pressure, displacement, speed, efficiency and life. Main structural parameters include plunger diameter, plunger number and inclined plate angle.

(l)压力 在各种液压泵中，柱塞泵能达到的T作压力最高。直轴式和斜轴式柱塞泵的压力普遍达到了40～48MPa，某些军品甚至达60MPa;旋转斜盘式柱塞泵的最高压力达100MPa。

(L) pressure is in all kinds of hydraulic pumps, and piston pump can achieve the highest T pressure. The pressure of the straight shaft and the inclined shaft plunger pump generally reach 40 ~ 48MPa, some military products even reach 60MPa, and the maximum pressure of the rotary swashplate plunger pump is 100MPa.

(2)排量的估算及范围 轴向柱塞泵的排量主要取决于柱塞直径、柱塞的有效行程、斜盘倾角（传动轴与缸体轴线之间的夹角）以及每个工作循环中各柱塞的作用次数等。

(2) the estimation of the displacement and the displacement of the axial piston pump mainly depend on the diameter of the plunger, the effective stroke of the plunger, the angle of the inclined disk (the angle between the shaft and the axis of the cylinder body), as well as the number of action of each plunger in each working cycle.

柱塞泵排量的通用计算公式为

The general formula for calculating the displacement of a plunger pump is

V=Kπ/4d2hZ×10-3 (mL/r)

V=K PI /4d2hZ x 10-3 (mL/r)

式中 K——每个工作循环中各柱塞的作用次数；

The K of each type is the number of actions of each plunger in each working cycle.

d——柱塞直径，mm；

D - plunger diameter, mm;

h——柱塞的有效行程，mm；

H - the effective stroke of the plunger, mm;

Z——柱塞数。

Z - the number of plungers.

轴向柱塞泵的排量计算公式见下表。

The calculation formula for the displacement of the axial piston pump is shown in the table below.

常用直轴式柱塞泵的排量范围为1.5～1500mL/r；斜轴式柱塞泵的排量范围为5～2500mL/r；旋转斜盘式柱塞泵的排量范围为2.5～100mL/r。

The displacement range of the straight shaft plunger pump is 1.5 ~ 1500mL/r, the displacement range of the slanting piston pump is 5 ~ 2500mL/r, and the displacement range of the rotary inclined disc plunger pump is 2.5 ~ 100mL/r.

(3)转速柱塞泵的许用转速均很高，具体数值因排量规格不同而异，例如小排量的转速可超过10000r/min，中等排量泵的转速为3000～5000r/min，大规格重系列直轴泵在有预压的条件下，转速也可达2000r/min以上。

(3) the allowable rotational speed of the speed plunger pump is very high, the specific value varies depending on the specifications of the displacement, for example, the speed of the small displacement can exceed 10000r/min, the speed of the medium displacement pump is 3000 ~ 5000r/min, and the speed of the large size series straight shaft pump can be above 2000r/min under the condition of prepressure.

(4)效率 在已知的各种液压泵中，由于柱塞泵的工作容积具有完全连续的密封线（面），故能达到最高的容积效率。又由于各运动副之间的润滑条件良好，它的机械效率也已达到了很高的水平。

(4) in all known hydraulic pumps, the maximum volume efficiency can be achieved because the working volume of the plunger pump has a fully continuous sealing line (surface). Besides, because of the good lubrication conditions among all the sports pairs, its mechanical efficiency has also reached a high level.