The invention discloses a portal crane capable of working on a ramp properly. The portal crane comprises supporting frames and a cross beam, and the supporting frames are arranged at the left end andthe right end of the bottom surface of the cross beam; the bottoms of the supporting frames are fixedly connected with the top surface of a base, and a leveling mechanism is arranged on the base; first leveling rods are driven by an electric cylinder, so that the first leveling rods on the two sides are opened; then, a screw rod is driven by a first motor to rotate, and a threaded sleeve is drivento move in the axial direction of the screw rod, so that the threaded sleeve gradually approaches to a fixing sleeve, and a second leveling rod is pushed by a connecting rod to open; and a foot pad at the bottom of the second leveling rod is in contact with the ground after opening; the device is supported; at the moment, the base does not play a supporting role any more, the bottom surface of the base is in a horizontal state, and the supporting frames are kept in a vertical state; and then, an inclined cross beam plate is adjusted to be in a horizontal state through telescopic adjustment ofhydraulic oil cylinders at the two ends.

    本发明公开了一种可在坡道上正常作业的门式起重机,包括支撑架和横梁,所述横梁底面左右两端均设有所述支撑架,所述支撑架底部固定连接于底座顶面,所述底座上设有调平机构;通过电动气缸驱动第一调平杆,使得两侧第一调平杆张开,再通过第一电机驱动丝杆转动,进而带动螺纹套筒沿着丝杆轴向移动,从而使得螺纹套筒逐渐靠近固定套筒、连杆推动第二调平杆张开,张开后第二调平杆底部脚垫与地面接触,对该装置进行支撑,此时,底座不再起到支撑作用,底座底面处于水平状态,支撑架保持竖直状态;之后,通过对两端的液压油缸进行伸缩调节,将倾斜的横梁板调节至水平状态。


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    Title :

    Portal crane capable of working on ramp properly


    Additional title:

    一种可在坡道上正常作业的门式起重机


    Contributors:

    Publication date :

    2021-03-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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