A stroke operation calibration control device for a hydraulic cylinder and a stroke operation calibration control process for a hydraulic cylinder

摘要

A stroke operation calibration control device for a hydraulic cylinder (4d, 4e, 4f), said stroke operation calibration control device comprising: movable portions (4a, 4b, 4c), which are rotatably supported rotatably in a vehicle main body (1a), hydraulic cylinders (4d, 4e, 4f), respectively between the vehicle main body (1a) and the movable portion (4a) or between the movable portions (4a, 4b, 4c) and rotatably supporting the movable portions (4a, 4b, 4c), a stroke sensor (10) suitable for the Hydraulic cylinder (4d, 4e, 4f) and measures a stroke length of the hydraulic cylinder (4d, 4e, 4f), a reset sensor (20) which measures a reset reference point at which the stroke length measured by the stroke sensor (10) is reset, a stroke end detection processing unit (30a) that detects a stroke end position of the hydraulic cylinder (4d, 4e, 4f), a calibration processing unit (30b) that controls the stroke length b calibrating the reset reference point and / or the stroke end position, a malfunction detecting unit (30c) that outputs an error when the measured stroke length is out of a stroke range defined by a minimum stroke end position and a maximum stroke end position, and a control unit (30) , which prevents the output of the error until the measured stroke length has passed the reset reference point at a power supply time.