The invention discloses a trackless portal crane. The trackless portal crane comprises a machine frame assembly, a wheel set mechanism, a hydraulic system and a hoisting device. The wheel set mechanism is arranged at the bottom of supporting legs of the machine frame assembly, the hydraulic system and the hoisting device are arranged on the machine frame assembly, and the hoisting device comprisesa hoisting tool, hoisting steel wire ropes, two hydraulic winches, guide sheaves and movable pulleys; the two hydraulic winches are controlled independently, and each hydraulic winch is used for controlling two hoisting points; the hoisting steel wire ropes are wound on rollers of the hydraulic winches, the two ends of the hoisting steel wire rope wound on each hydraulic winch sequentially pass through the guide sheaves and the movable pulleys, and the end parts of the hoisting steel wire ropes are fixing points and used for fixing a track plate or a track panel; and the hoisting tool is usedfor bearing the hoisting steel wire ropes, the hydraulic winches, the guide sheaves and the movable pulleys. The trackless portal crane solves the problem that four hoisting oil cylinders cannot be synchronous completely during hoisting due to the fact that an existing crane adopts the four oil cylinders to individually control four hoisting points.

    本发明公开了一种无轨门式起重机,包括机架总成、轮组机构、液压系统和起吊装置,轮组机构设置在机架总成的支腿底部,液压系统和起吊装置设置在机架总成上,起吊装置包括起吊工装、起吊钢丝绳、液压绞车、导向滑轮和动滑轮;液压绞车设置有2个,2个液压绞车独立控制,每个液压绞车用于控制两个吊点;起吊钢丝绳缠绕在液压绞车的滚筒上,缠绕在同一个液压绞车上的起吊钢丝绳的两端均依次通过导向滑轮和动滑轮,起吊钢丝绳的端部为固定点,用于固定轨道板或轨排;起吊工装用于支承起吊钢丝绳、液压绞车、导向滑轮和动滑轮。本发明解决了现有起重机采用四个油缸单独控制四个吊点导致四个起吊油缸在起吊时无法完全同步的问题。


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    Title :

    Trackless portal crane


    Additional title:

    一种无轨门式起重机


    Contributors:
    HAN RUI (author) / WU MO (author) / XU ZHONGLAI (author) / LAI ZHONGPING (author) / WANG YIXIANG (author) / ZHU ZHILIANG (author)

    Publication date :

    2020-04-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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