HYDRAULIC OPERATION DEVICE

• Main Author: SAKAMOTO NORIHIKO
• Format: Patent
• Language: English; Japanese
• Published: 12.01.2017
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BYMECHANICAL FEATURES ONLY; CONTROLLING; DEVICES FOR VENTING OR AERATING; DREDGING; ENGINEERING ELEMENTS AND UNITS; FIXED CONSTRUCTIONS; FOUNDATIONS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; HYDRAULIC ENGINEERING; LIGHTING; MECHANICAL ENGINEERING; PHYSICS; REGULATING; SOIL SHIFTING; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

PROBLEM TO BE SOLVED: To surely implement an operation by securing an oil feed amount to an external hydraulic work machine by limiting a turning speed in an operation of a work operation lever.SOLUTION: A cam 57 is disposed on a base portion of a work operation lever 7 tilted in operation, a tip of a bush rod 59 connected to one end of a spool 58 of a pilot valve as a control valve of a left remote controller valve 52, is kept into contact with the cam 57, and rotation limitation means 90 for limiting rotation of the work operation lever 7 from a set angle, is detachably disposed near the push rod 59.SELECTED DRAWING: Figure 5 【課題】作業操作レバーの操作において旋回速度を制限して、外部油圧作業機への送油量を確保して、作業が確実に行えるようにしようとする。【解決手段】傾倒操作される作業操作レバー７の基部にカム５７が設けられ、該カム５７に左リモコンバルブ５２の制御弁となるパイロットバルブのスプール５８の一端に連結されるプッシュロッド５９の先端が当接され、該プッシュロッド５９の近傍に作業操作レバー７の回動を設定角度から制限する回動制限付与手段９０を着脱可能に設けた。【選択図】図５