The invention provides a mobile gantry crane. The mobile gantry crane structurally comprises a connecting rod frame, a counterweight device, a driving machine base, a moving frame, a rotating structure and a lifting hanging frame, wherein the connecting rod frame is installed on the driving machine base, and the left side of the connecting rod frame is connected with the right side of the counterweight device in a welded manner. According to the mobile gantry crane, by arranging a dust cover structure, dust debris can adhere to shield shells and then can flow downwards into a support shell along the shield shells under the vibration of equipment rotation and then flow to an outlet hole along the side wall of a rotator to be discharged through the outlet hole, and therefore it can be effectively avoided that dust enters the gap between a rotating rod and a rotating disc of a rotating base, wear is caused when the rotating rod and the rotating disc rotate, and then frictional force generated during rotation is increased; and by arranging a rotating lantern ring to assist in start of a dust-proof structure, it is avoided that great friction is generated at the contact position of thelower inner end of the dust-proof structure and the rotating base, and then the lower interior of the dust-proof structure is worn.

    本发明提供一种移动式门座起重机,其结构包括连杆架、配重器、驱动机座、移动架、旋转结构、起重吊架,连杆架安装于驱动机座上,连杆架左侧与配重器右侧相焊接,本发明通过设置防尘罩结构,粉尘杂质会附着在护罩壳上,然后在设备转动的振动下,会顺着护罩壳向下进行流动,流向支壳内部,然后顺着旋转器侧壁流向出孔,通过出孔排出,从而能够有效的防止粉尘进入到旋转座的旋转杆与转盘的间隙处,致使旋转杆与转盘在旋转时,产生磨损的现象,从而加大旋转时所产生的摩擦力,通过设置旋转套环,以此对防尘结构启动辅助的作用,避免防尘结构下内端与旋转座接触处产生太大的摩擦,从而造成防尘结构下内部产生磨损。


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    Title :

    Mobile gantry crane


    Additional title:

    一种移动式门座起重机


    Contributors:
    XIE XINCAI (author)

    Publication date :

    2020-08-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES / B08B Reinigen allgemein , CLEANING IN GENERAL / F16J Kolben , PISTONS



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