The invention belongs to the technical field of building machinery, and particularly relates to a rotary assembly and a tower crane. The rotary assembly comprises a rotary supporting bearing, an upper support and a lower support. The slewing bearing comprises a slewing raceway. The upper support is connected to the upper portion of the slewing bearing in a pivoted mode and comprises an upper support surrounding barrel. The lower support is connected to the lower portion of the slewing bearing and comprises a lower support surrounding barrel. Wherein the rotary raceway, the upper support surrounding barrel and the lower support surrounding barrel are coaxially arranged and are equal in radius. By means of the arrangement, the upper support surrounding barrel, the lower support surrounding barrel and the rotary raceway are located on the circumferential wall of the same cylinder, so that loads generated by an upper part connected to a rotary assembly are well supported, eccentric torque is prevented from being generated, abnormal sound in the rotary process is reduced, and the service life of the rotary supporting bearing is prolonged.

    本发明属于建筑机械技术领域,具体地,涉及一种回转总成及塔机。其中,该回转总成包括回转支承轴承、上支座以及下支座。回转支承轴承包括回转滚道。上支座枢转连接于回转支承轴承的上方且包括上支座围桶。下支座连接在回转支承轴承的下方且包括下支座围桶。其中,回转滚道、上支座围桶以及下支座围桶同轴设置且半径相等。如此设置,使得上支座围桶、下支座围桶以及回转滚道位于同一圆柱体的周壁上,以对连接在回转总成的上装产生的载荷形成良好地支撑,防止产生偏心力矩,降低回转过程中的异响,提高回转支承轴承的使用寿命。


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    Title :

    Rotary assembly and tower crane


    Additional title:

    回转总成及塔机


    Contributors:
    LI HAO (author) / FENG JUN (author) / XIE PANHU (author)

    Publication date :

    2022-04-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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