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Hydraulic control system and method for working machine and working machine
The invention relates to the technical field of hydraulic systems, and discloses an operation machine hydraulic control system and method and an operation machine. The bypass oil return system of the hydraulic control system comprises a first bypass loop, the first end of the first bypass loop is connected with the position, close to a hydraulic oil cylinder, of a first main oil way, the second end of the first bypass loop is connected with the position, close to a main reversing valve, of a second main oil way, and the first bypass loop is sequentially provided with a first pressure opening valve, an electromagnetic opening valve and a second pressure opening valve from the first end to the second end; the electromagnetic opening valve is electrically connected with the electric control handle; one end of the second bypass loop is connected to the second main oil way close to the hydraulic oil cylinder, and the other end is connected to the first pressure opening valve; one end of the oil return path is connected with the second main oil path between the first bypass loop and the second bypass loop, and the other end of the oil return path is connected with the oil tank. Therefore, when oil enters the rod cavity and oil returns from the rodless cavity, the valve group is opened, the oil return flow enters the oil return path from the valve group, the oil return flow can be quickly discharged, back pressure is reduced, and the shrinkage speed of the rod cavity is increased.
本发明涉及液压系统技术领域，公开了作业机械液压控制系统、方法及作业机械。该液压控制系统的旁路回油系统包括：第一旁通回路，第一端与第一主油路靠近液压油缸处连接，第二端与第二主油路靠近主换向阀处连接，第一旁通回路从第一端至第二端的方向，依次设有第一压力开启阀、电磁开启阀和第二压力开启阀，电磁开启阀与电控手柄电连接；第二旁通回路，一端连接至第二主油路靠近液压油缸处，另一端连接至第一压力开启阀；回油路，一端与第一旁通回路和第二旁通回路之间的第二主油路连接，另一端与油箱连接。从而能够在有杆腔进油、无杆腔回油时，开启阀组，回油流量从阀组进入回油路，可将回油量快速排出，减少背压产生，加快有杆腔收缩的速度。
Hydraulic control system and method for working machine and working machine
The invention relates to the technical field of hydraulic systems, and discloses an operation machine hydraulic control system and method and an operation machine. The bypass oil return system of the hydraulic control system comprises a first bypass loop, the first end of the first bypass loop is connected with the position, close to a hydraulic oil cylinder, of a first main oil way, the second end of the first bypass loop is connected with the position, close to a main reversing valve, of a second main oil way, and the first bypass loop is sequentially provided with a first pressure opening valve, an electromagnetic opening valve and a second pressure opening valve from the first end to the second end; the electromagnetic opening valve is electrically connected with the electric control handle; one end of the second bypass loop is connected to the second main oil way close to the hydraulic oil cylinder, and the other end is connected to the first pressure opening valve; one end of the oil return path is connected with the second main oil path between the first bypass loop and the second bypass loop, and the other end of the oil return path is connected with the oil tank. Therefore, when oil enters the rod cavity and oil returns from the rodless cavity, the valve group is opened, the oil return flow enters the oil return path from the valve group, the oil return flow can be quickly discharged, back pressure is reduced, and the shrinkage speed of the rod cavity is increased.
本发明涉及液压系统技术领域，公开了作业机械液压控制系统、方法及作业机械。该液压控制系统的旁路回油系统包括：第一旁通回路，第一端与第一主油路靠近液压油缸处连接，第二端与第二主油路靠近主换向阀处连接，第一旁通回路从第一端至第二端的方向，依次设有第一压力开启阀、电磁开启阀和第二压力开启阀，电磁开启阀与电控手柄电连接；第二旁通回路，一端连接至第二主油路靠近液压油缸处，另一端连接至第一压力开启阀；回油路，一端与第一旁通回路和第二旁通回路之间的第二主油路连接，另一端与油箱连接。从而能够在有杆腔进油、无杆腔回油时，开启阀组，回油流量从阀组进入回油路，可将回油量快速排出，减少背压产生，加快有杆腔收缩的速度。
Hydraulic control system and method for working machine and working machine
作业机械液压控制系统、方法及作业机械
ZHOU HAOYU (author) / SHI ZIGONG (author) / LIU JUNJIE (author)
2024-04-19
Patent
Electronic Resource
Chinese
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