OPERATION STATE MONITORING DEVICE OF CYLINDER

• Main Author: FUJIWARA ATSUSHI
• Format: Patent
• Language: English; Japanese
• Published: 12.04.2018
• Subjects: BLASTING; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; HEATING; HYDRAULICS OR PNEUMATICS IN GENERAL; LIGHTING; MECHANICAL ENGINEERING; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To determine an intermediate state between a normal state and an abnormal state without installing a sensor in the vicinity of a cylinder.SOLUTION: A microcomputer 62 of a detector 54 constituting a monitoring device 10 calculates a pressure difference (a first pressure difference ΔP12, a second pressure difference ΔP21) between a first pressure value P1 detected by a first pressure sensor 50 provided in first piping 26 and a second pressure value P2 detected by a second pressure sensor 52 provided in second piping 30, and determines whether operation of reciprocating movement of a piston 16 is in an intermediate state between a normal state and an abnormal state or not on the basis of the calculated pressure difference.SELECTED DRAWING: Figure 2 【課題】シリンダの近傍にセンサを設置することなく、正常状態と異常状態との間の中間状態を判断する。【解決手段】監視装置１０を構成する検出器５４のマイクロコンピュータ６２は、第１配管２６に設けられた第１圧力センサ５０が検出した第１圧力値Ｐ１と、第２配管３０に設けられた第２圧力センサ５２が検出した第２圧力値Ｐ２との差圧（第１差圧ΔＰ１２、第２差圧ΔＰ２１）を算出し、算出した差圧に基づいて、ピストン１６の往復移動の動作が正常状態と異常状態との間の中間状態にあるか否かを判定する。【選択図】図２