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A platform for research: civil engineering, architecture and urbanism
Hydraulic control system and loader
The invention belongs to the technical field of hydraulic control, and particularly relates to a hydraulic control system and a loader. The hydraulic control system comprises a sequence valve, an on-off valve, a pilot valve, a working valve, a working oil cylinder, a hydraulic control valve and a low-pressure alarm switch; an oil inlet of the sequence valve and an oil inlet of the on-off valve are both connected with a pilot oil source, and a working oil port of the on-off valve is connected with an oil inlet of the pilot valve; the working valve further comprises a first control oil port and a second control oil port, the first control oil port of the working valve is connected with the first working oil port of the pilot valve, and the first control oil port of the working valve is configured to control the first working oil port of the working valve to be communicated with the oil inlet of the working valve. The second control oil port of the working valve is connected with the second working oil port of the pilot valve, and the second control oil port of the working valve is configured to control the second working oil port of the working valve to be communicated with the oil inlet of the working valve. When the hose between the hydraulic oil cylinder and the working valve is broken, the hydraulic oil cylinder can achieve self-locking, and the situation that the working device loses control and falls down is avoided.
本发明属于液压控制技术领域，具体涉及一种液压控制系统及装载机，该液压控制系统包括顺序阀、通断阀、先导阀、工作阀、工作油缸、液控阀以及低压报警开关；顺序阀的进油口与通断阀的进油口均连接先导油源，通断阀的工作油口连接先导阀的进油口；工作阀还包括第一控制油口和第二控制油口，工作阀的第一控制油口与先导阀的第一工作油口连接，工作阀的第一控制油口被配置控制工作阀的第一工作油口与工作阀的进油口导通，工作阀的第二控制油口与先导阀的第二工作油口连接，工作阀的第二控制油口被配置控制工作阀的第二工作油口与工作阀的进油口导通。在液压油缸与工作阀之间的软管破裂时，液压油缸能够实现自锁，避免工作装置失去控制而出现下落。
Hydraulic control system and loader
The invention belongs to the technical field of hydraulic control, and particularly relates to a hydraulic control system and a loader. The hydraulic control system comprises a sequence valve, an on-off valve, a pilot valve, a working valve, a working oil cylinder, a hydraulic control valve and a low-pressure alarm switch; an oil inlet of the sequence valve and an oil inlet of the on-off valve are both connected with a pilot oil source, and a working oil port of the on-off valve is connected with an oil inlet of the pilot valve; the working valve further comprises a first control oil port and a second control oil port, the first control oil port of the working valve is connected with the first working oil port of the pilot valve, and the first control oil port of the working valve is configured to control the first working oil port of the working valve to be communicated with the oil inlet of the working valve. The second control oil port of the working valve is connected with the second working oil port of the pilot valve, and the second control oil port of the working valve is configured to control the second working oil port of the working valve to be communicated with the oil inlet of the working valve. When the hose between the hydraulic oil cylinder and the working valve is broken, the hydraulic oil cylinder can achieve self-locking, and the situation that the working device loses control and falls down is avoided.
本发明属于液压控制技术领域，具体涉及一种液压控制系统及装载机，该液压控制系统包括顺序阀、通断阀、先导阀、工作阀、工作油缸、液控阀以及低压报警开关；顺序阀的进油口与通断阀的进油口均连接先导油源，通断阀的工作油口连接先导阀的进油口；工作阀还包括第一控制油口和第二控制油口，工作阀的第一控制油口与先导阀的第一工作油口连接，工作阀的第一控制油口被配置控制工作阀的第一工作油口与工作阀的进油口导通，工作阀的第二控制油口与先导阀的第二工作油口连接，工作阀的第二控制油口被配置控制工作阀的第二工作油口与工作阀的进油口导通。在液压油缸与工作阀之间的软管破裂时，液压油缸能够实现自锁，避免工作装置失去控制而出现下落。
Hydraulic control system and loader
一种液压控制系统及装载机
GUO FANGSHENG (author) / MA PENGPENG (author) / ZHAO JIN (author) / LIU YA (author) / YUAN JIHENG (author) / XIAO YAFANG (author) / FAN HONGQUAN (author) / WEI JIANMIN (author) / LI ZHAO (author)
2023-10-24
Patent
Electronic Resource
Chinese
IPC:
E02F
Baggern
,
DREDGING
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