The invention provides a stroke detection device for a large-span portal crane. The device comprises at least one set of detection mechanisms, and each set of detection mechanisms comprises a connecting frame, a mounting frame, a guide roller, a detection wheel, a wheel shaft and an encoder; one end of the connecting frame is connected with a crane cart traveling mechanism, and the other end of the connecting frame is hinged to the mounting frame; the detection wheels sleeve on the wheel shafts, the wheel shafts are arranged on the mounting frames through bearings, the detection wheels and the mounting frames form rotatable connections, and the wheel treads of the detection wheels are in contact with the top surface of the track; the encoders are connected and arranged at the end parts of the wheel shafts; and the four guide rollers are arranged below the mounting frame, the wheel treads of the guide rollers are perpendicular to the wheel treads of the detection wheels, and the two guide rollers on the left side and the two guide rollers on the right side are symmetrically arranged. The stroke detection device can accurately detect and dynamically adjust the running strokes of track walking mechanisms on the two sides of the crane, and the synchronism of the track walking mechanisms on the two sides is improved.

    本发明提供一种大跨度门式起重机行程检测装置,其包括至少一组检测机构,每组检测机构均包括连接架、安装架、导向滚轮、检测轮、轮轴以及编码器;连接架的一端与起重机大车行走机构连接,连接架的另一端与安装架铰接相连;检测轮套装在轮轴上,轮轴通过轴承安装在安装架上,检测轮与安装架构成可转动连接,检测轮的轮踏面与轨道顶面相接触;编码器连接安装在轮轴的端部;导向滚轮的数量为四个,安装在安装架的下方,导向滚轮的轮踏面与检测轮的轮踏面方向垂直,左侧的二个导向滚轮与右侧的二个导向滚轮呈对称布置。本发明行程检测装置的可精确检测起重机两侧轨道行走机构运行行程并动态调整、提高两侧轨道行走机构的同步性。


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    Title :

    Stroke detection device for large-span portal crane


    Additional title:

    一种大跨度门式起重机行程检测装置


    Contributors:
    GAO WEIDONG (author) / QIANG SHAOHUA (author)

    Publication date :

    2021-11-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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