公开(公告)号：EP3190296A4

公开(公告)日：2017-08-23

申请号：EP15838826

申请日：2015-08-11

申请人： KK KOBE SEIKO SHO (KOBE STEEL LTD ) ,  KOBELCO CONSTR MACH CO LTD

发明人： TOMOCHIKA NOBUYUKI ,  YOSHIHARA HIDEKI

IPC分类号： F04B51/00 ,  F04B49/06

CPC分类号： F04B49/103 ,  F04B49/065 ,  F04B51/00 ,  F04B2201/1201 ,  F04B2205/05 ,  F04D15/0027 ,  F04D15/0088 ,  F15B19/005 ,  G01P5/14 ,  G01P13/00

摘要： A malfunction diagnosing device X1 that includes pistons M1 to M9 arranged in a circumferential direction and discharges oil with rotation in the circumferential direction comprises: a pressure sensor 30 for detecting a pressure value of oil discharged from a hydraulic pump in rotation; a speed sensor 40 for detecting a rotation phase of the hydraulic pump 2 at the time when a pressure value of oil is detected by the pressure sensor 30; a phase calculation part 50; and a rendering part 60 for rendering a model of a relationship between pressure values of oil detected by the pressure sensor 30 and rotation phases of the hydraulic pump 2 detected by the speed sensor 40 and the phase calculation part 50 to thereby obtain pulsating waveform data. This makes it possible to diagnose a malfunction of the hydraulic pump 2 without influence of a change in the rotation speed of the hydraulic pump 2.

摘要翻译： 包括沿圆周方向布置的活塞M1至M9并沿圆周方向旋转排放油的故障诊断装置X1包括：压力传感器30，用于检测从液压泵旋转排出的油的压力值; 速度传感器40，用于在压力传感器30检测到油的压力值时检测液压泵2的旋转相位; 相位计算部分50; 以及绘制部分60，用于绘制由压力传感器30检测到的油的压力值与由速度传感器40和相位计算部分50检测到的液压泵2的旋转相位之间的关系的模型，从而获得脉动波形数据。 这使得能够在不影响液压泵2的转速变化的情况下诊断液压泵2的故障。