Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Hydraulic control system and engineering machinery
The invention belongs to the technical field of hydraulic systems, and discloses a hydraulic control system and engineering machine.The hydraulic control system comprises an oil tank, an oil pump, a reversing valve, a differential valve and an oil cylinder, the differential valve comprises a valve body and a valve element, and the valve body is provided with a valve cavity, a working oil port p, a working oil port t and a working oil port a, the working oil port t and the working oil port a are communicated with a rodless cavity and a rod cavity of the oil cylinder respectively, a first circular bead and a second circular bead are arranged in the valve cavity, the first end of the valve element is connected to the first circular bead in a sliding mode and provided with a first throttling groove, and the working oil port t can be communicated with the working oil port a through the first throttling groove. The second end of the valve element is connected to the second circular bead in a sliding mode and provided with a second throttling groove, and the working oil port p can communicate with the working oil port a through the second throttling groove. The engineering machinery comprises the hydraulic control system. According to the hydraulic control system, the speed impact generated by reversing of the differential valve on stretching of the cylinder rod of the oil cylinder can be relieved, and the requirement for fine operation of engineering machinery is met.
本发明属于液压系统技术领域，公开了一种液压控制系统及工程机械，液压控制系统包括油箱、油泵、换向阀、差动阀和油缸，差动阀包括阀体和阀芯，阀体具有阀腔以及连通于阀腔的工作油口p、工作油口t和工作油口a，工作油口t和工作油口a分别连通油缸的无杆腔和有杆腔，阀腔内具有第一台肩和第二台肩，阀芯第一端滑动连接于第一台肩并开设有第一节流槽，工作油口t能通过第一节流槽与工作油口a连通，阀芯第二端滑动连接于第二台肩并开设有第二节流槽，工作油口p能通过第二节流槽与工作油口a连通；工程机械包括上述的液压控制系统。本发明提供的液压控制系统能减缓差动阀换向对油缸的缸杆伸出产生的速度冲击，满足工程机械精细作业的需求。
Hydraulic control system and engineering machinery
The invention belongs to the technical field of hydraulic systems, and discloses a hydraulic control system and engineering machine.The hydraulic control system comprises an oil tank, an oil pump, a reversing valve, a differential valve and an oil cylinder, the differential valve comprises a valve body and a valve element, and the valve body is provided with a valve cavity, a working oil port p, a working oil port t and a working oil port a, the working oil port t and the working oil port a are communicated with a rodless cavity and a rod cavity of the oil cylinder respectively, a first circular bead and a second circular bead are arranged in the valve cavity, the first end of the valve element is connected to the first circular bead in a sliding mode and provided with a first throttling groove, and the working oil port t can be communicated with the working oil port a through the first throttling groove. The second end of the valve element is connected to the second circular bead in a sliding mode and provided with a second throttling groove, and the working oil port p can communicate with the working oil port a through the second throttling groove. The engineering machinery comprises the hydraulic control system. According to the hydraulic control system, the speed impact generated by reversing of the differential valve on stretching of the cylinder rod of the oil cylinder can be relieved, and the requirement for fine operation of engineering machinery is met.
本发明属于液压系统技术领域，公开了一种液压控制系统及工程机械，液压控制系统包括油箱、油泵、换向阀、差动阀和油缸，差动阀包括阀体和阀芯，阀体具有阀腔以及连通于阀腔的工作油口p、工作油口t和工作油口a，工作油口t和工作油口a分别连通油缸的无杆腔和有杆腔，阀腔内具有第一台肩和第二台肩，阀芯第一端滑动连接于第一台肩并开设有第一节流槽，工作油口t能通过第一节流槽与工作油口a连通，阀芯第二端滑动连接于第二台肩并开设有第二节流槽，工作油口p能通过第二节流槽与工作油口a连通；工程机械包括上述的液压控制系统。本发明提供的液压控制系统能减缓差动阀换向对油缸的缸杆伸出产生的速度冲击，满足工程机械精细作业的需求。
Hydraulic control system and engineering machinery
一种液压控制系统及工程机械
YU ZHIWEI (Autor:in) / DONG LIDUI (Autor:in) / JING YUTAO (Autor:in) / SUN ZHIYUAN (Autor:in) / ZHOU JUNAI (Autor:in) / WANG LEI (Autor:in)
14.05.2024
Patent
Elektronische Ressource
Chinesisch
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