A pressure limiting function booster for a tractor comprises a piston rod assembly and a booster cylinder body. An oil inlet and an oil outlet are formed in the booster cylinder body; the piston rod assembly is arranged in the booster cylinder body in a sliding manner; the piston rod assembly comprises a piston rod and a needle valve; the piston rod is a hollow rod piece, a piston is arranged at the left end and provided with a pressure relief hole, and a plurality of drainage holes are formed in the right side of the piston in the radial direction. The needle valve is slidably arranged in thepiston rod; a pressure relief valve plate is arranged on the left side of the piston, a pressure relief elastic element is arranged on the left side of the pressure relief valve plate, and the pressure relief elastic element applies pre-pressure to the pressure relief valve plate; when the pressure of the hydraulic oil exceeds the pre-pressure of the pressure relief valve plate, the hydraulic oilopens the pressure relief valve plate, and pressure is relieved through the pressure relief hole; when the booster with the pressure limiting function for the tractor is installed, the booster is directly connected to a hydraulic system of the tractor in series through the oil inlet and the oil outlet in the booster cylinder body, the booster has the advantages of being easy to install, free of debugging and maintenance and low in overall cost, and therefore the actual use and popularization effect is very good.

    一种拖拉机用具有限压功能助力器,包括活塞杆组件、助力器缸体;助力器缸体上设有进油口、出油口;活塞杆组件滑动设置在助力器缸体中;活塞杆组件包括活塞杆、针阀;活塞杆为中空的杆件,左端设有活塞,活塞上设有泄压孔,活塞右侧径向设有若干泄流孔;针阀滑动设置在活塞杆中;活塞左侧设置有泄压阀片,泄压阀片左侧设置有泄压弹性元件,泄压弹性元件对泄压阀片施加有预压;当液压油压力超过泄压阀片的预压时,液压油打开泄压阀片,通过泄压孔泄压;拖拉机用具有限压功能助力器安装时,通过助力器缸体上的进油口、出油口直接串联在拖拉机液压系统上,具有安装简单、免调试、免维护、整体成本低的优点,因此实际推广使用效果非常良好。


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    Title :

    pressure limiting function booster for tractor, boosting system and tractor


    Additional title:

    一种拖拉机用具有限压功能助力器、助力系统和拖拉机


    Contributors:
    SHENG ZHIJIE (author) / SHENG LEI (author) / WANG MENG (author) / XIE JIGE (author) / BAI YANG (author) / MA TENGFEI (author)

    Publication date :

    2021-03-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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