ELECTROMAGNETIC PROPORTIONAL VALVE, FLUID SYSTEM AND CONSTRUCTION MACHINE

• Main Authors: IWASAKI HITOSHI, SHIGAKI TOMIO
• Format: Patent
• Language: English; Japanese
• Published: 25.11.2021
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; HYDRAULICS OR PNEUMATICS IN GENERAL; LIGHTING; MECHANICAL ENGINEERING; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

To provide an electromagnetic proportional valve that can simplify and miniaturize a structure for electrical control, and to provide a fluid system using the electromagnetic proportional valve, and a construction machine.SOLUTION: An electromagnetic proportional valve 150 includes: a valve part 10; and a drive device part 20 for driving the valve part 10 in accordance with a drive current. The drive device part 20 includes: a detection part 170 for detecting information relating to a state of at least one of the valve part 10 and the drive device part 20; and a control unit 200 for controlling the drive current on the basis of a detection result of the detection part 170.SELECTED DRAWING: Figure 3 【課題】電気的に制御するための構造を簡素化でき、かつ小型化できる電磁比例弁、及びこの電磁比例弁を用いた流体システム、建設機械を提供する。【解決手段】電磁比例弁１５０は、弁部１０と、弁部１０を駆動電流に応じて駆動する駆動装置部２０と、を備える。駆動装置部２０は、弁部１０及び駆動装置部２０の少なくともいずれか一方の状態に関する情報を検出する検出部１７０と、検出部１７０の検出結果に基づいて駆動電流を制御する制御部２００と、を備える。【選択図】図３