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A platform for research: civil engineering, architecture and urbanism
HYDRAULIC DRIVING DEVICE AND WORKING MACHINE COMPRISING THE SAME
To provide a hydraulic driving device that can reduce energy loss when supplying/discharging hydraulic oil to/from a crushing cylinder, and a working machine comprising the same.SOLUTION: A hydraulic circuit 5 comprises a crusher 9 including a first main cylinder 16A, a hydraulic pump 25, a control valve 23, a remote control valve 50 for receiving opening operation and closing operation of the crusher 9, and first to fifth switching valves 41-49. When the remote control valve 50 receives the opening operation, hydraulic oil is supplied from the hydraulic pump 25 to a rod side chamber T2, and the hydraulic oil is supplied from a head side chamber T1 to a head side chamber S1. When the remote control valve 50 receives the closing operation, the hydraulic oil is supplied from the hydraulic pump 25 to the head side chamber T1 and a rod side chamber S2, and the hydraulic oil is discharged from the rod side chamber T2 and the head side chamber S1. As a result, tank return volume is reduced at the time of the opening operation, and a sub-cylinder 17 can be recovered at the time of the closing operation.SELECTED DRAWING: Figure 5
【課題】破砕用シリンダに作動油を給排するときのエネルギ損失を低減することができる油圧駆動装置およびこれを備えた作業機械を提供する。【解決手段】油圧回路５は、第１メインシリンダ１６Ａを含む破砕機９と、油圧ポンプ２５と、コントロールバルブ２３と、破砕機９の開き操作および閉じ操作を受けるリモコン弁５０と、第１〜第５方向切換弁４１〜４９と、を有する。リモコン弁５０が開き操作を受けると、油圧ポンプ２５からロッド側室Ｔ２に作動油が供給され、ヘッド側室Ｔ１からヘッド側室Ｓ１に作動油が供給される。一方、リモコン弁５０が閉じ操作を受けると、油圧ポンプ２５からヘッド側室Ｔ１およびロッド側室Ｓ２に作動油が供給され、ロッド側室Ｔ２およびヘッド側室Ｓ１から作動油が排出される。この結果、開き操作時のタンク戻り量が低減され、閉じ操作時にサブシリンダ１７を復元することが可能となる。【選択図】図５
HYDRAULIC DRIVING DEVICE AND WORKING MACHINE COMPRISING THE SAME
To provide a hydraulic driving device that can reduce energy loss when supplying/discharging hydraulic oil to/from a crushing cylinder, and a working machine comprising the same.SOLUTION: A hydraulic circuit 5 comprises a crusher 9 including a first main cylinder 16A, a hydraulic pump 25, a control valve 23, a remote control valve 50 for receiving opening operation and closing operation of the crusher 9, and first to fifth switching valves 41-49. When the remote control valve 50 receives the opening operation, hydraulic oil is supplied from the hydraulic pump 25 to a rod side chamber T2, and the hydraulic oil is supplied from a head side chamber T1 to a head side chamber S1. When the remote control valve 50 receives the closing operation, the hydraulic oil is supplied from the hydraulic pump 25 to the head side chamber T1 and a rod side chamber S2, and the hydraulic oil is discharged from the rod side chamber T2 and the head side chamber S1. As a result, tank return volume is reduced at the time of the opening operation, and a sub-cylinder 17 can be recovered at the time of the closing operation.SELECTED DRAWING: Figure 5
【課題】破砕用シリンダに作動油を給排するときのエネルギ損失を低減することができる油圧駆動装置およびこれを備えた作業機械を提供する。【解決手段】油圧回路５は、第１メインシリンダ１６Ａを含む破砕機９と、油圧ポンプ２５と、コントロールバルブ２３と、破砕機９の開き操作および閉じ操作を受けるリモコン弁５０と、第１〜第５方向切換弁４１〜４９と、を有する。リモコン弁５０が開き操作を受けると、油圧ポンプ２５からロッド側室Ｔ２に作動油が供給され、ヘッド側室Ｔ１からヘッド側室Ｓ１に作動油が供給される。一方、リモコン弁５０が閉じ操作を受けると、油圧ポンプ２５からヘッド側室Ｔ１およびロッド側室Ｓ２に作動油が供給され、ロッド側室Ｔ２およびヘッド側室Ｓ１から作動油が排出される。この結果、開き操作時のタンク戻り量が低減され、閉じ操作時にサブシリンダ１７を復元することが可能となる。【選択図】図５
HYDRAULIC DRIVING DEVICE AND WORKING MACHINE COMPRISING THE SAME
油圧駆動装置およびこれを備えた作業機械
MAEDA KENGO (author)
2019-12-19
Patent
Electronic Resource
Japanese