Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
PROBLEM TO BE SOLVED: To efficiently reduce a power loss in feeding and discharging hydraulic oil to and from a driving cylinder.SOLUTION: A crushing machine 9 has a selector valve 24 which changes the state of a hydraulic circuit 5 of the crushing machine 9 to: connect, when a crushing arm rotates in an opening direction, connect a head-side chamber of a second cylinder 16B and a storage chamber S1 to each other; connect, when the crushing arm rotates in a closing direction, the storage chamber S1 and the head-side chamber of the second cylinder 16B to each other and also disconnect a head-side chamber of a first cylinder 16A and the head-side chamber of the second cylinder 16B from each other on condition that pressure in a head-side chamber of a first cylinder 16A is less than set pressure having been set in advance; and further disconnect, when the crushing arm rotates in the closing direction, the storage chamber S1 and the head-side chamber of the second cylinder 16B from each other, allows hydraulic oil to flow from the storage chamber S1 to a discharge side of a control valve 23, and connect the head-side chamber of the first cylinder 16A and the head-side chamber of the second cylinder 16B to each other on condition that the pressure in the head-side chamber of the first cylinder 16A is equal to or larger than the set pressure.SELECTED DRAWING: Figure 5
【課題】駆動シリンダに作動油を給排するときの動力損失を効率よく低減する。【解決手段】破砕機９は、破砕アームの開き方向の回動時に第２シリンダ１６Ｂのヘッド側室と収容室Ｓ１とを接続し、破砕アームの閉じ方向の回動時において第１シリンダ１６Ａのヘッド側室内の圧力が予め設定された設定圧未満のときに収容室Ｓ１と第２シリンダ１６Ｂのヘッド側室とを接続するとともに第１シリンダ１６Ａのヘッド側室と第２シリンダ１６Ｂのヘッド側室とを遮断し、さらに、破砕アームの閉じ方向の回動時において第１シリンダ１６Ａのヘッド側室内の圧力が設定圧以上のときに収容室Ｓ１と第２シリンダ１６Ｂのヘッド側室とを遮断しかつ収容室Ｓ１から制御弁２３の排出側の通路への作動油の流れを許容するとともに第１シリンダ１６Ａのヘッド側室と第２シリンダ１６Ｂのヘッド側室とを接続するように破砕機９における油圧回路５の状態を切り換える切換弁２４を有する。【選択図】図５
PROBLEM TO BE SOLVED: To efficiently reduce a power loss in feeding and discharging hydraulic oil to and from a driving cylinder.SOLUTION: A crushing machine 9 has a selector valve 24 which changes the state of a hydraulic circuit 5 of the crushing machine 9 to: connect, when a crushing arm rotates in an opening direction, connect a head-side chamber of a second cylinder 16B and a storage chamber S1 to each other; connect, when the crushing arm rotates in a closing direction, the storage chamber S1 and the head-side chamber of the second cylinder 16B to each other and also disconnect a head-side chamber of a first cylinder 16A and the head-side chamber of the second cylinder 16B from each other on condition that pressure in a head-side chamber of a first cylinder 16A is less than set pressure having been set in advance; and further disconnect, when the crushing arm rotates in the closing direction, the storage chamber S1 and the head-side chamber of the second cylinder 16B from each other, allows hydraulic oil to flow from the storage chamber S1 to a discharge side of a control valve 23, and connect the head-side chamber of the first cylinder 16A and the head-side chamber of the second cylinder 16B to each other on condition that the pressure in the head-side chamber of the first cylinder 16A is equal to or larger than the set pressure.SELECTED DRAWING: Figure 5
【課題】駆動シリンダに作動油を給排するときの動力損失を効率よく低減する。【解決手段】破砕機９は、破砕アームの開き方向の回動時に第２シリンダ１６Ｂのヘッド側室と収容室Ｓ１とを接続し、破砕アームの閉じ方向の回動時において第１シリンダ１６Ａのヘッド側室内の圧力が予め設定された設定圧未満のときに収容室Ｓ１と第２シリンダ１６Ｂのヘッド側室とを接続するとともに第１シリンダ１６Ａのヘッド側室と第２シリンダ１６Ｂのヘッド側室とを遮断し、さらに、破砕アームの閉じ方向の回動時において第１シリンダ１６Ａのヘッド側室内の圧力が設定圧以上のときに収容室Ｓ１と第２シリンダ１６Ｂのヘッド側室とを遮断しかつ収容室Ｓ１から制御弁２３の排出側の通路への作動油の流れを許容するとともに第１シリンダ１６Ａのヘッド側室と第２シリンダ１６Ｂのヘッド側室とを接続するように破砕機９における油圧回路５の状態を切り換える切換弁２４を有する。【選択図】図５
HYDRAULIC DRIVING DEVICE
油圧駆動装置
TAKESHITA TATSUYA (Autor:in)
08.02.2018
Patent
Elektronische Ressource
Japanisch