| 摘要 |
PURPOSE: To reduce a cost required for installation of a sensor detecting an angle of inclination of a pump. CONSTITUTION: A regulator 32 is installed in the upper part of a pump main body 31 in a replaceable manner. When electrical feedback control is carried out, the regulator 32 on which a potentiometer 35 is mounted is used. The potentiometer 35 detects oscillating displacement setting a lever shaft 51 of a feedback lever 43, which is used for mechanical feedback control, as a center via a detecting pin 45 and a detecting member 44 in terms of angular displacement. Between a sleeve 49 of a hydraulic proportional control valve 47, a spool 50, and a servo-piston 48, the mechanical feedback is based on a positional feedback system. |
