The invention relates to the technical field of engineering machinery industry, and discloses a hydraulic system for preventing outriggers of a high-altitude truck from extending outwards, which comprises a hydraulic oil tank and a stop valve, one side of the hydraulic oil tank is connected with the stop valve through a pipeline, one end of the stop valve is provided with a hydraulic pump, and one end of the hydraulic pump is connected with a multi-way valve through a hydraulic pipeline. One end of the multi-way valve is connected with the front vertical oil cylinder, the front horizontal oil cylinder, the rear vertical oil cylinder and the rear horizontal oil cylinder, a sequence valve is arranged at one end of an oil inlet and outlet pipe of the front horizontal oil cylinder, an operation handle of the multi-way valve is reversely operated, so that the flow direction of hydraulic oil is changed, P-B7 is switched into P-A7, and the hydraulic oil flows to a V opening through a C opening of the sequence valve and then reaches a rod cavity of the front horizontal oil cylinder. Under the action of pressure, rodless cavity hydraulic oil of the front horizontal oil cylinder flows back to a hydraulic oil tank from channels from B7 to T of the multi-way valve, the working condition of landing leg retraction is achieved, the sequence valve is additionally arranged, the requirement for the normal turning function is met, and safe driving is guaranteed.
本发明涉及工程机械行业技术领域,公开了一种高空车防支腿外伸的液压系统,包括:液压油箱和截止阀,所述液压油箱一侧通过管道连接有截止阀,所述截止阀一端设有液压泵,所述液压泵一端通过液压管道连接有多路阀,所述多路阀一端连接前垂直油缸、前水平油缸、后垂直油缸和后水平油缸,所述前水平油缸进出油管一端设有顺序阀,本发明对多路阀的操作手柄反向操作,使液压油流向改变,由P到B7切换为P到A7,经顺序阀的C口流向V口,至前水平油缸的有杆腔。在压力的作用下,前水平油缸的无杆腔液压油由多路阀的B7到T通道流回液压油箱,实现支腿缩回的工况,增加顺序阀满足正常形式转弯功能需求,保证安全行驶。
Hydraulic system for preventing landing legs of aerial vehicle from extending outwards
一种高空车防支腿外伸的液压系统
2023-10-13
Patent
Electronic Resource
Chinese
IPC: | F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last |
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