神鹰牌QY20汽车起重机是沈阳建筑机械厂研制的一种新产品(见图1)。它采用不等壁厚的大圆角吊臂,并按优化设计成的。该结构具有强度高、重量轻等特点。整机全部是国产件,使用维修方便。其底盘采用全弹性悬挂,行驶平顺舒适。 The Condor brand QY20 truck crane is a new product developed by Shenyang Construction Machinery Factory (see Figure 1). It uses a large rounded boom with unequal wall thickness and is optimally designed. The structure is characterized by high strength and light weight. The whole machine is made in China and it is easy to use and maintain. Its chassis is fully elastically suspended for smooth ride comfort.