Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention relates to a high-pressure overflow valve for a main control valve of a large excavator. The high-pressure overflow valve comprises a core rod, a main valve element, a valve sleeve and avalve body which are coaxially arranged, wherein a pressure cavity is connected to the tail end of a damping valve element, a filter screen seat is connected to the tail end of the pressure cavity, afilter screen is arranged on the filter screen seat, a poppet valve seat is connected to the tail end of the valve body, a cone valve element, a pressure regulating spring and a spring seat are sequentially arranged inside the poppet valve seat from right to left, a cone head of the cone valve element communicates with the pressure cavity, a pressure regulating screw is connected to the tail endof the poppet valve seat, the front end of the valve sleeve is provided with a spline structure, and a large outer circle of a spline is matched with an inner hole of the valve body. The high-pressureoverflow valve is of a pilot type and has a reverse oil supplementing function, the section of the main valve sleeve is designed to be in a spline form, clearance fit between the large outer circle of the spline and the inner hole of the valve body can play a role in guiding, and moreover, pilot oil can return to an opening T through a spline groove, and the overflow function is guaranteed.
本发明涉及用于大型挖掘机主控阀的高压溢流阀，包括同轴设置的芯杆、主阀芯、阀套、阀体，阻尼阀芯的末端连接压力腔，压力腔的末端连接滤网座，滤网座上设置滤网，阀体末端连接提动阀座，提动阀座内从右往左依次设置锥阀芯、调压弹簧、弹簧座，锥阀芯的锥头与压力腔相连通，提动阀座末端连接调压螺钉，阀套的前端设为花键结构，花键的大外圆与阀体内孔相配合。该高压溢流阀为先导式并带有反向补油功能，将主阀套的截面设计成花键的形式，一方面花键大外圆与阀体内孔的间隙配合可起到导向作用，另一方面先导油可通过花键槽回到T口，确保了溢流的功能。
The invention relates to a high-pressure overflow valve for a main control valve of a large excavator. The high-pressure overflow valve comprises a core rod, a main valve element, a valve sleeve and avalve body which are coaxially arranged, wherein a pressure cavity is connected to the tail end of a damping valve element, a filter screen seat is connected to the tail end of the pressure cavity, afilter screen is arranged on the filter screen seat, a poppet valve seat is connected to the tail end of the valve body, a cone valve element, a pressure regulating spring and a spring seat are sequentially arranged inside the poppet valve seat from right to left, a cone head of the cone valve element communicates with the pressure cavity, a pressure regulating screw is connected to the tail endof the poppet valve seat, the front end of the valve sleeve is provided with a spline structure, and a large outer circle of a spline is matched with an inner hole of the valve body. The high-pressureoverflow valve is of a pilot type and has a reverse oil supplementing function, the section of the main valve sleeve is designed to be in a spline form, clearance fit between the large outer circle of the spline and the inner hole of the valve body can play a role in guiding, and moreover, pilot oil can return to an opening T through a spline groove, and the overflow function is guaranteed.
本发明涉及用于大型挖掘机主控阀的高压溢流阀，包括同轴设置的芯杆、主阀芯、阀套、阀体，阻尼阀芯的末端连接压力腔，压力腔的末端连接滤网座，滤网座上设置滤网，阀体末端连接提动阀座，提动阀座内从右往左依次设置锥阀芯、调压弹簧、弹簧座，锥阀芯的锥头与压力腔相连通，提动阀座末端连接调压螺钉，阀套的前端设为花键结构，花键的大外圆与阀体内孔相配合。该高压溢流阀为先导式并带有反向补油功能，将主阀套的截面设计成花键的形式，一方面花键大外圆与阀体内孔的间隙配合可起到导向作用，另一方面先导油可通过花键槽回到T口，确保了溢流的功能。
High-pressure overflow valve for main control valve of large excavator
用于大型挖掘机主控阀的高压溢流阀
LIU DEQUN (Autor:in)
03.11.2020
Patent
Elektronische Ressource
Chinesisch
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