A rotary table is installed on a gate seat, a cargo boom and a balance arm are installed on the left side and the right side of the rotary table, the cargo boom is composed of a cargo boom box beam and a cargo boom supporting rod, the balance arm is composed of a balance arm box beam and a balance arm supporting rod, and the length of the cargo boom is larger than that of the balance arm. The cargo boom is fixed on the right side of the turntable, the balance arm is fixed on the left side of the turntable, and the upper surfaces of the cargo boom box beam and the balance arm box beam are on the same horizontal plane; the cargo boom supporting rod is located below the cargo boom box beam, the two ends of the cargo boom supporting rod are connected with the cargo boom box beam and the rotary table respectively, and the cargo boom supporting rod, the cargo boom box beam and the rotary table form a triangular structure. The balance arm supporting rod is located below the balance arm box beam, the two ends of the balance arm supporting rod are connected with the balance arm box beam and the rotary table respectively, and the balance arm supporting rod, the balance arm box beam and the rotary table form a triangular structure. According to the invention, the total height of the gantry crane is reduced, the wind load is greatly reduced, the stability and safety of the gantry crane are improved, and the risk of wind disaster accidents is reduced.

    本发明公开了一种门座式起重机,在门座上安装有转台,在转台左右两侧安装有起重臂和平衡臂,起重臂由起重臂箱型梁及起重臂支撑杆组成,平衡臂由平衡臂箱型梁及平衡臂支撑杆组成,起重臂长度大于平衡臂长度,起重臂固定于转台右侧,平衡臂固定于转台左侧,起重臂箱型梁和平衡臂箱型梁上表面处在同一水平面上;起重臂支撑杆位于起重臂箱型梁下方,起重臂支撑杆两端分别与起重臂箱型梁及转台连接,起重臂支撑杆与起重臂箱型梁及转台构成三角形结构;平衡臂支撑杆位于平衡臂箱型梁下方,平衡臂支撑杆两端分别与平衡臂箱型梁及转台连接,平衡臂支撑杆与平衡臂箱型梁及转台构成三角形结构。本发明降低了门座起重机总高度,风载荷随之大幅减小,提高了门座起重机稳定性和安全性,降低风灾事故风险。


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    Title :

    Portal crane


    Additional title:

    一种门座式起重机


    Contributors:

    Publication date :

    2024-05-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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