The invention discloses a speed selecting mechanism of a propeller speed regulator. The upper portion of a speed selecting stop assembly is arranged between a speed selecting handle and the upper portion of a reducing screw shaft in a sleeving mode. A reset torsion spring sleeves the outer end of the large cylinder at the upper end of the upper shell assembly; the thinned part of the middle lowerpart of the reducing screw shaft is assembled in an inner hole of the upper spring seat in an interference manner; a lower spring seat is arranged on the upper end surface of the spool; the diameter-thickened lower end of the variable-diameter screw shaft is positioned below the bottom surface of the insertion sheet; springs fixed on the upper spring seat and the lower spring seat penetrate through the variable-diameter screw shaft; a bearing of which the hook end of a centrifugal block is propped against a boss on the bottom surface of the valve cap is assembled on the valve core on the lowerend surface of the valve cap in a clearance fit manner; an oil groove I and an oil groove II are formed in the positions, above and below the convex shoulder, of the outer circle of the valve element; the valve sleeve is provided with a high-pressure oil inlet and a high-pressure oil outlet which are communicated with the oil groove I, and an oil return opening communicated with the oil groove II. The rotating speed of the propeller can be steplessly adjusted within a certain range, and it can be guaranteed that the propeller can reliably operate at the selected needed rotating speed of the propeller.

    本发明公开了一种螺旋桨调速器选速机构,选速止挡组件上部套在选速手柄和变径螺杆轴上部之间;上壳体组件上端大圆柱外端套有复位扭簧;变径螺杆轴中下部变细处过盈装配在上弹簧座内孔内;阀芯上端面设置有下弹簧座;变径螺杆轴直径变粗的下端位于插片底面下方,固定在上、下弹簧座上的弹簧穿在变径螺杆轴上;阀芯安装在阀套内,阀帽下端面的阀芯上间隙装配有离心块钩端顶接在其底面凸台上的轴承;阀芯外圆上设置有凸肩,凸肩上下的阀芯外圆上设置有油槽Ⅰ和油槽Ⅱ;阀套上设置有与油槽Ⅰ连通的进高压油口、出高压油口和与油槽Ⅱ连通的回油口。使用本发明的螺旋桨转速在一定范围内无级可调,能保证在选定所需要的螺旋桨转速下可靠运行。


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    Title :

    Speed selecting mechanism of propeller governor


    Additional title:

    一种螺旋桨调速器选速机构


    Contributors:
    XU DINGDING (author) / HAO LI (author) / WANG JINLI (author) / CHEN SHUANGSHUANG (author) / WANG CHUNHUI (author)

    Publication date :

    2021-03-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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