力士乐REXROTH轴向柱塞泵31系列
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柱塞泵的泵油机构包括两套精密偶件：柱塞（plunger）+柱塞套(barrel)构成柱塞偶件(plunger and barrel assembly)、出油阀（delivery valve）和出油阀座(delivery valve seat)构成出油阀偶件(delivery valve assembly)。
柱塞和柱塞套是一对精密偶件，经配对研磨后不能互换，要求有高的精度和光洁度和好的耐磨性，其径向间隙为0.002～0.003mm
柱塞头部圆柱面上切有斜槽，并通过径向孔、轴向孔与顶部相通，其目的是改变循环供油量；柱塞套上制有进、回油孔，均与泵上体内低压油腔相通，柱塞套装入泵上体后，应用定位螺钉定位。
柱塞头部斜槽的位置不同，改变供油量的方法也不同。
出油阀和出油阀座也是一对精密偶件，配对研磨后不能互换，其配合间隙为0.01mm 。
出油阀是一个单向阀，在弹簧压力作用下，阀上部圆锥面与阀座严密配合，其作用是在停供时，将高压油管与柱塞上端空腔隔绝，防止高压油管内的油倒流入喷油泵内。
出油阀的下部呈十字断面，既能导向，又能通过柴油。出油阀的锥面下有一个小的圆柱面，称为减压环带，其作用是在供油终了时，使高压油管内的油压迅速下降，避免喷孔处产生滴油现象。当环带落入阀座内时则使上方容积很快增大，压力迅速减小，停喷迅速。
力士乐REXROTH轴向柱塞泵31系列A10VSO45部分型号：
REXROTH轴向柱塞泵A10VSO45密封圈材质P和V，排量45，正转R
A10VSO45DR/31R-PPA12N00 A10VSO45DR/31R-VPA12N00
A10VSO45DG/31R-PPA12N00 A10VSO45DG/31R-VPA12N00
A10VSO45DRG/31R-PPA12N00 A10VSO45DRG/31R-VPA12N00
A10VSO45DFR/31R-PPA12N00 A10VSO45DFR/31R-VPA12N00
A10VSO45DFR1/31R-PPA12N00 A10VSO45DFR1/31R-VPA12N00
A10VSO45DFLR/31R-PPA12N00 A10VSO45DFLR/31R-VPA12N00
REXROTH轴向柱塞泵A10VSO45密封圈材质P和V，排量45，反转L
A10VSO45DR/31L-PPA12N00 A10VSO45DR/31L-VPA12N00
A10VSO45DG/31L-PPA12N00 A10VSO45DG/31L-VPA12N00
A10VSO45DRG/31L-PPA12N00 A10VSO45DRG/31L-VPA12N00
A10VSO45DFR/31L-PPA12N00 A10VSO45DFR/31L-VPA12N00
A10VSO45DFR1/31L-PPA12N00 A10VSO45DFR1/31L-VPA12N00
A10VSO45DFLR/31L-PPA12N00 A10VSO45DFLR/31L-VPA12N00
力士乐REXROTH轴向柱塞泵31系列 |
