The invention discloses a movable portal crane which comprises a main beam, a track is arranged in the main beam, a walking trolley is arranged in the track, a hoisting mechanism is fixed at the bottom of the walking trolley, the hoisting mechanism comprises an electric reel, a mooring rope is arranged on the electric reel, a limiting sleeve is sleeved outside the mooring rope, and the limiting sleeve is of a three-layer structure. Vertical supporting legs are arranged at the bottoms of the two sides of the main beam, the bottoms of the two supporting legs are fixed to a lower cross beam, inclined struts are further arranged between the supporting legs and the lower cross beam, the two ends of the lower cross beam are each provided with a supporting block, vertical through holes are formed in the supporting blocks, and positioning devices are installed in the vertical through holes. According to the universal wheel of the movable portal crane, a track does not need to be laid, so that the portal crane is flexible in operation and good in field applicability. The inclined struts play a role in reinforcing the supporting legs, the lower cross beam can be fixed to the ground through the positioning devices, shaking when the lifting capacity is slightly large is avoided, and the strength and stability of the portal crane structure are guaranteed.

    本发明公开了一种移动门式起重机,它包括主梁,主梁中设置有轨道,轨道中装有行走小车,行走小车的底部固定着起升机构,起升机构包括电动卷盘,电动卷盘上安装有缆绳,缆绳的外部套有限位套筒,该限位套筒有三层结构,主梁的两侧底部设置有竖直的支腿,两个支腿的底部均固定在下横梁上,所述支腿和下横梁之间还设置有斜撑,下横梁的两端分别设置一个支撑块,支撑块上开设有竖直通孔,竖直通孔中安装有定位装置。本发明一种移动门式起重机的万向轮可以无需铺设轨道,使得门式起重机运行灵活,场地适用性好。斜撑对支腿起到加固作用,定位装置可以将下横梁与地面固定,避免起重量稍大时出现晃动,保证了门式起重机结构的强度和稳定性。


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    Title :

    Movable portal crane


    Additional title:

    一种移动门式起重机


    Contributors:
    WANG JIANWEN (author) / SUN JIANWEI (author) / WANG LI (author) / ZHOU YONGQUAN (author) / LI SUNQUAN (author) / MA HAIJUAN (author) / QIAN HAILONG (author)

    Publication date :

    2023-06-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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