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1台配装H形支腿的8t汽车起重机,驾驶员将其支腿横向全伸时,2支前垂直缸上部向前倾斜,2支后垂直缸则不存在倾斜现象。1.变形检查仔细检查发现,当伸出的2支前垂直缸还未着地时,倾斜较为明显,且右前支腿上部向前倾斜较大,左前支腿倾斜略小。当将支腿横向缩回后,左、右支腿倾斜量明显减小,变形状况如图1所示。我们随即对起重机机架、支腿结构进行检查。
An 8t truck crane equipped with H-shaped legs, the driver tilts the upper part of the two vertical cylinders upward and the rear vertical cylinder does not incline when the driver extends the legs horizontally. 1. Deformation inspection Check carefully found that when the two out of the vertical cylinder before the ground has not been tilted more obvious, and the upper right front leg tilt larger forward left tilt slightly smaller legs. When the legs retracted laterally, the left and right legs tilt significantly reduced, the deformation shown in Figure 1. We immediately check the crane frame, leg structure.