WORK MACHINE

• Main Authors: KONISHI HIRONARI, KURACHI KOHEI, KOGA TAKEHIRO, TANABE YUYA, ABE TAIKI
• Format: Patent
• Language: English; Japanese
• Published: 28.02.2022
• Subjects: BLASTING; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; DREDGING; ENGINEERING ELEMENTS AND UNITS; FIXED CONSTRUCTIONS; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; FOUNDATIONS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; HYDRAULIC ENGINEERING; HYDRAULICS OR PNEUMATICS IN GENERAL; LIGHTING; MECHANICAL ENGINEERING; SOIL SHIFTING; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; THERMAL INSULATION IN GENERAL; WEAPONS

To improve the response of a left traveling pump and a right traveling pump during forward rotation when an actuation valve is activated.SOLUTION: A work device comprises a first oil passage connecting a travel control member and an actuation valve, a first traveling oil passage that connects to a first pressure receiver and through which the hydraulic oil acting on the first pressure receiver is passed when the travel control member is operated, a second traveling oil passage connected to the second pressure receiver and through which the hydraulic oil acting on the second pressure receiver is passed when the travel control member is operated, a third traveling oil passage connected to the third pressure receiver and through which the hydraulic oil acting on the third pressure receiver is passed when the travel control member is operated, a fourth traveling oil passage connected to the fourth pressure receiver and through which the hydraulic oil acting on the fourth pressure receiver is passed when the travel control member is operated, a second oil passage connecting the first oil passage to the first traveling oil passage, and a third oil passage connecting the first oil passage to the third traveling oil passage.SELECTED DRAWING: Figure 3 【課題】作動弁を作動させたときの左走行ポンプ及び右走行ポンプの正転時の応答性を向上させることができるようにする。【解決手段】作業機は、走行操作装置と作動弁とを接続する第１油路と、第１受圧部に接続し且つ走行操作部材を操作したときに第１受圧部に作用する作動油を通過させる第１走行油路と、第２受圧部に接続し且つ走行操作部材を操作したときに第２受圧部に作用する作動油を通過させる第２走行油路と、第３受圧部に接続し且つ走行操作部材を操作したときに第３受圧部に作用する作動油を通過させる第３走行油路と、第４受圧部に接続し且つ走行操作部材を操作したときに第４受圧部に作用する作動油を通過させる第４走行油路と、第１油路と第１走行油路とを接続する第２油路と、第１油路と第３走行油路とを接続する第３油路と、を備えている。【選択図】図３