The invention provides a lightweight bridge crane. The lightweight bridge crane comprises crane rails, a big cart and a small cart arranged on the big cart, wherein the small cart is arranged on the big cart and provided with a lifting mechanism; the big cart comprises small cart rails, an outer rail end beam, an inner rail end beam, and a wheel bearing box; the small cart rails consist of two main beams which are arranged in parallel; a wheel bearing box is mounted at two ends of the outer rail end beam; a wheel bearing box is mounted at two ends of the inner rail end beam; each main beam consists of an upper flange plate, a lower flange plate and two web plates which are arranged in parallel; each web plate is a straight line web plate of which the cross section is bent; and openings areformed in each web plate. According to the lightweight bridge crane disclosed by the invention, the complete crane can smoothly operate in straight line rails and bent arc-shaped rails having curvature, the phenomena of rail gnawing and derailing of wheels of the big cart in the running process of the crane are avoided, the weight of the main beams of the bridge crane is greatly alleviated, the bridge crane is more lightweight, and transporting and mounting are convenient.

    本发明提供一种轻量化桥式起重机,包括起重机轨道、大车、设置在大车上的安装有起升机构的小车,大车,包括小车轨道、外轨端梁、内轨端梁、车轮轴承箱,小车轨道由两根主梁平行设置组成,外轨端梁、内轨端梁两端安装车轮轴承箱,主梁由上翼缘板、下翼缘板、两个平行设置的腹板组成,腹板为横截断面设置有弯折的直线腹板,腹板上设置有开孔。该起重机不仅确保了起重机整机能够在直线轨道和带有曲率的弯曲弧线轨道平稳运行,避免起重机运行过程中大车车轮啃轨、脱轨现象,而且极大的减轻了桥式起重机主梁的重量,更加轻量化,便于运输安装。


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    Title :

    Lightweight bridge crane


    Additional title:

    一种轻量化桥式起重机


    Contributors:
    YU YANNAN (author) / QI QISONG (author) / DONG QING (author) / XU GENING (author) / XIN YUNSHENG (author)

    Publication date :

    2020-06-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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