履带起重机具有接地比压小，转弯半径小，吊重作业不需打支腿、可带载行驶、起重性能好等优点，具有其它起重设备无法替代的地位。随着需要吊运物的质量、体积和要达到的起升高度越来越大，履带起重机愈来愈显示出其优越性。转台作为起重机的三大结构件之一，是联系上下车的关? Crawler cranes have the advantages of small specific earthing pressure, small turning radius, no need to support the crane during lifting operations, load carrying capacity and good lifting performance, which can not be replaced by other lifting equipment. With the need to lift quality, volume and hoisting height to be achieved more and more, crawler cranes more and more show their superiority. Turntable crane as one of the three major components, is the link off on the off?