The invention discloses a brake-free variable cross-section crane beam which comprises a pi-shaped upper wing plate, a web plate with different thicknesses and a lower wing plate, the Pi-shaped upper wing plate comprises a flat plate and two short webs perpendicular to the surface of the flat plate, the webs with different thicknesses are thick on the upper portion and thin on the lower portion, and the two ends of the webs with different thicknesses are welded to the Pi-shaped upper wing plate and the Pi-shaped lower wing plate respectively; the pi-shaped upper wing plate utilizes two short webs to increase the strength and the stability of the upper wing plate; the thickness of the upper half part of the unequal-thickness web plate with the thick upper part and the thin lower part is increased, so that the stability of the upper part of the crane beam is remarkably improved by matching with the pi-shaped upper wing plate while economical efficiency is considered; by means of the pi-shaped upper wing plate and the partially thickened unequal-thickness wing plate, the crane beam can still keep stable without being provided with a side face vertical stiffening plate and a horizontal brake beam.

    本发明公开了一种免制动变截面吊车梁,包括π型上翼板、不等厚腹板和下翼板;所述π型上翼板包括平板和垂直于平板表面的两个短腹板,不等厚腹板上厚下薄,不等厚腹板的两端分别与π型上翼板和下翼板焊接;π型上翼板利用两个短腹板增加了上翼板的强度和稳定性;上厚下薄的不等厚腹板通过上半部分的厚度增加,在兼顾经济性的同时配合π型上翼板显著增加吊车梁上部分的稳定性;本发明通过π型上翼板和部分增厚的不等厚翼板使得吊车梁无需设置侧面垂直加劲板和水平制动梁依然能够保持稳定。


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    Title :

    Braking-free variable cross-section crane beam and manufacturing method


    Additional title:

    一种免制动变截面吊车梁及制造方法


    Contributors:
    ZHOU JIE (author) / RUAN WUCHANG (author) / ZHAO YONG (author) / SUN HAIFEI (author) / GAO GUODONG (author)

    Publication date :

    2024-05-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES / B23P Sonstige Metallbearbeitung , OTHER WORKING OF METAL



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