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美国Caterpillar拖拉机公司制造了一种宽推土板的推土机,推土板悬挂在并列的两台D9G型拖拉机机组上(图1),司机位于前进方向左侧的拖拉机上,操纵两机同时工作。它的生产率比两台D9G型装成的推土机单独作业总效率要高2.2～2.5倍。
The Caterpillar Tractor Company of the United States has manufactured a bulldozer with a wide bulldozing plate. The bulldozing plate hangs on two parallel D9G tractor units (figure 1). The driver is on the tractor on the left in the forward direction and operates the two machines at the same time. Its productivity is 2.2 to 2.5 times higher than the total efficiency of the separate operation of the two D9G-mounted bulldozers.