美国VICKERS@威格士柱塞泵柱塞往复运动总行程L是不变的，由凸轮的升程决定。VICKERS柱塞每循环的供油量大小取决于供油行程,供油行程不受凸轮轴控制是可变的。供油开始时刻不随供油行程的变化而变化。转动柱塞可改变供油终了时刻，从而改变供油量。柱塞泵工作时，在喷油泵凸轮轴上的凸轮与柱塞弹簧的作用下，迫使柱塞作上、下往复运动，从而完成泵油任务。 威格士柱塞泵过热 液压泵过度发热有两个原因，一是机械摩擦生热。由于运动表面处于干摩擦或半干摩擦状态，运动部件相互摩擦生热。二是液体摩擦生热。高压油通过各种缝隙泄漏到低压腔，大量的液压能损失转为热能。所以正确选择运动部件之间的间隙、油箱容积和冷却器，可以杜绝泵的过度发热和油温过高的现象。另外，回油过滤器堵塞造成回油背压过高，也会引起油温过高和泵体过热。 美国VICKERS@威格士柱塞泵PVH131R03AF30B252000009AM1AM010A PVH131C-RCF-3S-10-C25V-31-117
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威格士柱塞泵 PVH131R03AF30A25000000200100010A PVH131C-RSF-3S-10-C25-31
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PVH131R13AF70B252000001001AE010 |
