A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
CIVIL ENGINEERING/CONSTRUCTION MACHINE
PROBLEM TO BE SOLVED: To provide a civil engineering/construction machine capable of enhancing combined operability of a standby directional switching valve and a directional switching valve included in a first switching valve group.SOLUTION: A civil engineering/construction machine includes: hydraulic pumps 11 and 12; a first switching valve group which is connected to the hydraulic pump 11 and includes a bypass on-off valve 36; a second switching valve group which is connected to the hydraulic pump 12 and includes a standby directional switching valve 18; a combined pipeline 33 which connects the uppermost stream of the first switching valve group and the standby directional switching valve 18; a combination switching valve 34 which switches communication/cutoff of the combined pipeline 33; combined switching control means 35 which switches the combination switching valve 34 to a close position in response to any operation of the directional switching valves included in the first switching valve group; a controller 37 which performs predetermined calculation in response to a signal of each pilot operation pressures; and a bypass on-off valve switching electromagnetic valve 41 which is controlled by the controller 37, where the signal of the bypass on-off valve switching electromagnetic valve 41 is guided to the bypass on-off valve 36.SELECTED DRAWING: Figure 2
【課題】予備用方向切換弁と第１切換弁グループに含まれる方向切換弁との複合操作性を向上させることができる土木・建設機械の提供。【解決手段】油圧ポンプ１１，１２と、油圧ポンプ１１に接続されバイパス開閉弁３６を含む第１切換弁グループと、油圧ポンプ１２に接続され予備用方向切換弁１８を含む第２切換弁グループと、第１切換弁グループの最上流と予備用方向切換弁１８を連絡する合流管路３３と、合流管路３３を連通・遮断に切換える合流切換弁３４と、第１切換弁グループに含まれる方向切換弁のいずれかの操作に伴い合流切換弁３４を閉位置に切換える合流切換制御手段３５と、各パイロット操作圧の信号に基づいて所定の演算を行うコントローラ３７と、コントローラ３７によって制御されるバイパス開閉弁切換電磁弁４１とを備え、このバイパス開閉弁切換電磁弁４１の信号がバイパス開閉弁３６に導かれる構成とした。【選択図】図２
CIVIL ENGINEERING/CONSTRUCTION MACHINE
PROBLEM TO BE SOLVED: To provide a civil engineering/construction machine capable of enhancing combined operability of a standby directional switching valve and a directional switching valve included in a first switching valve group.SOLUTION: A civil engineering/construction machine includes: hydraulic pumps 11 and 12; a first switching valve group which is connected to the hydraulic pump 11 and includes a bypass on-off valve 36; a second switching valve group which is connected to the hydraulic pump 12 and includes a standby directional switching valve 18; a combined pipeline 33 which connects the uppermost stream of the first switching valve group and the standby directional switching valve 18; a combination switching valve 34 which switches communication/cutoff of the combined pipeline 33; combined switching control means 35 which switches the combination switching valve 34 to a close position in response to any operation of the directional switching valves included in the first switching valve group; a controller 37 which performs predetermined calculation in response to a signal of each pilot operation pressures; and a bypass on-off valve switching electromagnetic valve 41 which is controlled by the controller 37, where the signal of the bypass on-off valve switching electromagnetic valve 41 is guided to the bypass on-off valve 36.SELECTED DRAWING: Figure 2
【課題】予備用方向切換弁と第１切換弁グループに含まれる方向切換弁との複合操作性を向上させることができる土木・建設機械の提供。【解決手段】油圧ポンプ１１，１２と、油圧ポンプ１１に接続されバイパス開閉弁３６を含む第１切換弁グループと、油圧ポンプ１２に接続され予備用方向切換弁１８を含む第２切換弁グループと、第１切換弁グループの最上流と予備用方向切換弁１８を連絡する合流管路３３と、合流管路３３を連通・遮断に切換える合流切換弁３４と、第１切換弁グループに含まれる方向切換弁のいずれかの操作に伴い合流切換弁３４を閉位置に切換える合流切換制御手段３５と、各パイロット操作圧の信号に基づいて所定の演算を行うコントローラ３７と、コントローラ３７によって制御されるバイパス開閉弁切換電磁弁４１とを備え、このバイパス開閉弁切換電磁弁４１の信号がバイパス開閉弁３６に導かれる構成とした。【選択図】図２
CIVIL ENGINEERING/CONSTRUCTION MACHINE
土木・建設機械
FUKUCHI RYOHEI (author) / ODAKA KATSUAKI (author) / NARASAKI AKIHIRO (author)
2018-04-05
Patent
Electronic Resource
Japanese
CIVIL ENGINEERING CONSTRUCTION AND CONSTRUCTION METHOD OF CIVIL ENGINEERING CONSTRUCTION
| European Patent Office | 2017