运行式起重机为了控制整机高度,对人字架高度有一定的限制。在人字架顶点高度确定以后,为了减小变幅拉力,总希望该顶点接近机尾的上方。人字架除承受变幅拉力以外,还作用有转台的反力,故它的配置位置和结构形式对人字架压杆的稳定性和转台的强度均有很大的影响。 Operation crane in order to control the height of the machine, the height of the hermitage have certain restrictions. After determining the height of the apex of the H-shape, in order to reduce the amplitude tension, it is always desirable that the apex be close to the top of the tail. In addition to herringbone frame to withstand luffing pull, but also the role of turntable reaction force, so its location and structure of the configuration of the herringbone bar stability and turntable strength have a great impact.