The invention discloses a plug-in mounting type hydraulic valve. The hydraulic valve comprises a first one-way valve taking a first oil cavity as a liquid inlet and a second oil cavity as a liquid outlet, and a back pressure valve taking the second oil cavity as a liquid inlet and the first oil cavity as a liquid outlet, and one-way back pressure with the set size can be formed in the second oil cavity. The invention further discloses a single-cylinder bolt type suspension arm hydraulic control system. The system comprises a hydraulic pump, a control valve set, a telescopic balance valve, a telescopic oil cylinder, an arm pin electromagnetic reversing valve, a cylinder pin electromagnetic reversing valve and the plug-in mounting type hydraulic valve; the control valve set is connected to an output oil way of the hydraulic pump, the telescopic balance valve and the plug-in mounting type hydraulic valve are installed on a connecting oil way of the control valve set and the telescopic oil cylinder, the telescopic oil cylinder is provided with a center channel connected with the arm pin electromagnetic reversing valve and the cylinder pin electromagnetic reversing valve, and the plug-in mounting type hydraulic valve is installed between a rod cavity and the control valve set. The influence of the oil pressure of the central channel on the control precision of the telescopic oil cylinder can be reduced. In addition, the invention also discloses a crane.

    本发明公开了一种插装式液压阀,包括以第一油腔为进液口、以第二油腔为出液口的第一单向阀,和以第二油腔为进液口、以第一油腔为出液口的背压阀,能够在第二油腔形成设定大小的单向背压。本发明还公开了一种单缸插销式吊臂液压控制系统,包括液压泵、控制阀组、伸缩平衡阀、伸缩油缸、臂销电磁换向阀、缸销电磁换向阀和本发明的插装式液压阀;控制阀组连接在液压泵的输出油路上,伸缩平衡阀和插装式液压阀安装在控制阀组与伸缩油缸的连接油路上,伸缩油缸带有与臂销电磁换向阀和缸销电磁换向阀相连的中心通道,插装式液压阀安装在有杆腔与控制阀组之间,能够减小中心通道油压对伸缩油缸控制精度的影响。此外,本发明还公开了一种起重机。


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    Titel :

    Plug-in mounting type hydraulic valve, single-cylinder bolt type suspension arm hydraulic control system and crane


    Weitere Titelangaben:

    插装式液压阀、单缸插销式吊臂液压控制系统及起重机


    Beteiligte:
    WANG YANI (Autor:in) / WANG LEI (Autor:in) / HE WEI (Autor:in) / XU QINGPING (Autor:in) / HUANG ZHEN (Autor:in)

    Erscheinungsdatum :

    16.04.2021


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B66C Krane , CRANES / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein



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