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QY125型汽车起重机是目前国内生产的最大轮式起重机。它采用了一些新的结构,也向我们提出了一系列新的课题。我们受长江起重机厂的委托,对QY125型起重机转台进行了有限元分析。QY125型汽车起重机采用了高架式转台,结构形式如图1所示。这种转台在结构上有如下特点:它是由钢板焊接起来的,三维尺寸基本上属于同一数量级;在受力上则有以下特点:吊臂载荷通过销轴直接传递到转台上,因而转台不仅承受设备的重量,还要受到弯、扭、拉
The QY125 truck crane is currently the largest domestic wheeled crane. It has adopted some new structures and also presented us with a series of new topics. We were commissioned by the Changjiang Crane Factory to perform finite element analysis on the turntable of the QY125 crane. The QY125 truck crane adopts an overhead turntable with the structure shown in Figure 1. This rotary table has the following characteristics in terms of structure: it is welded by steel plates, and the three-dimensional dimensions are basically of the same order of magnitude; in terms of force, it has the following characteristics: The load of the boom is directly transmitted to the turntable through the pin shaft, so the turntable is not only Bear the weight of the equipment, but also by bending, twisting, pulling