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结合水电建设中金属结构焊接工作的特点,我们对大直径引水钢管环缝进行混合气体保护自动焊。现将QOH—4型样机的结构特点简述如下: 一、结构特点: 1.该机由机头、丝盘、托车、轨道等组成。机头净重12公斤。 2.爬行机构采用ZD—75型直流电机驱动,经减速器带动链轮在磁性软轨道上爬行。除电机做无级调速外,还设有机械粗调快慢两档,用以扩大变速范围。
Combined with the welding work of metal structures in the construction of hydropower, we conducted a hybrid gas protection automatic welding of the large-diameter water-filled steel pipe girth. Now QOH-4-type prototype machine’s structural features are summarized as follows: First, the structural features: 1. The machine from the nose, wire tray, car, track and other components. Head weight 12 kg. 2. Crawlers using ZD-75-type DC motor drive, driven by the gear sprocket crawls on the magnetic soft track. In addition to the motor to do stepless speed regulation, but also has a mechanical coarse speed two files, to expand the speed range.