FAILURE DIAGNOSTIC APPARATUS FOR ROTARY OIL HYDRAULIC UNIT

摘要

PURPOSE:To easily make a correct diagnosis in a short time by an apparatus which comprises a pulsation detector for detecting oil pressure pulsation during operation, an arithmetic unit for judging the degree of failure based on output from the pulsation detector, a display for indicating the judged result, etc. CONSTITUTION:A failure diagnostic apparatus comprises an oil pressure pulsation detector 3 for detecting oil pressure pulsation of a rotary oil hydraulic unit, an arithmetic unit 6 for judging the degree of failure in the rotary oil hydraulic unit based on output from the pulsation detector 3, and a display 7 for indicating the result judged by the arithmetic unit 6. The pulsation detector 3 serves to detect oil pressure pulsation of the rotary oil hydraulic unit during operation, the arithemtic unit 6 serves to judge the degree of failure in the rotary oil hydraulic unit based on output from the pulsation detector, and the display 7 serves to indicate the result judged by the arithmetic unit 6. Thus, it becomes possible to make a correct diagnosis with ease in a short time.