The invention relates to the technical field of cranes, and discloses an ultra-low electric hoist portal crane which comprises bases in bilateral symmetry, first rectangular openings are formed in the rear sides of the lower ends of the outer walls of the two bases correspondingly, and hydraulic telescopic rods are fixedly mounted in front of the inner walls of the two first rectangular openings correspondingly; a protection plate is fixedly mounted below the outer walls of the two first rectangular openings and located at the lower ends of the hydraulic telescopic rods, and when the hydraulic telescopic rods work, the movable bottom blocks can be moved to slide front and back in the first rectangular openings; the movable bottom block and the fixed bottom block can drive a rear supporting column and a front supporting column to swing correspondingly, and the rear supporting column and the front supporting column can drive a first connecting block rotationally connected with the rear supporting column and the front supporting column to move up and down when swinging, so that a connecting transverse plate is driven to move up and down, a sliding frame moves up and down, and an operator can adjust the height of the portal crane; and some vehicles, cargoes and large equipment can conveniently pass through the lower part of the portal crane.

    本发明涉及起重机技术领域,且公开了一种超低电动葫芦门式起重机,包括左右对称的底座,两个所述底座外壁下端后侧均开设有矩形开口一,两个所述矩形开口一内壁前方均固定安装有液压伸缩杆,两个矩形开口一外壁下方且位于所述液压伸缩杆下端固定安装有防护板,能够通过液压伸缩杆工作时移动移动底块在矩形开口一中前后滑动,当移动底块在矩形开口一中前后滑动移动时,移动底块和固定底块能够分别带动后支撑柱和前支撑柱摆动,后支撑柱和前支撑柱摆动时能够带动与其转动连接的连接块一上下移动,从而带动连接横板上下移动,进而使得滑动框上下移动,使得操作人员能够调节门式起重机的高度,方便一些车辆、货物和大型器材从门式起重机下方穿过。


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    Title :

    Ultra-low gantry crane with electric hoist


    Additional title:

    一种超低电动葫芦门式起重机


    Contributors:
    ZHAO CHONGBIN (author) / DING XIAOYU (author) / ZHANG KUO (author) / WANG YINGTAO (author) / CONG YANG (author)

    Publication date :

    2023-01-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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