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东风3型内燃机车上体架由司机室、动力室和冷却室分段组成。其中司机室、冷却室单独与底架组焊,动力室的两端用螺栓与相邻的司机室、冷却室连接,下部与底架之间用垫块调节高度后点焊固定。这种连接方法简单、拆卸方便,但顿个上体架结构单薄,壳体承载能力小。因此,车体架的主要异变部位在底架部分。异变部分的烘调工艺如下。一、部规数据与测定法 (一)部规数据主车架的总挠度应向上拱起,两心盘间的上拱数据为2～12毫米;心盘至两端部下垂允差为10毫米,上拱允差为4毫米;旁弯(水平弯曲)为7毫米。
Dongfeng 3 diesel locomotive upper body frame by the driver’s cab, power room and cooling chamber segments. The driver’s room and the cooling room are separately welded with the base frame, the two ends of the power room are bolted to the adjacent driver’s room and the cooling room, and the height between the lower part and the base frame is adjusted by the pad, and the spot welding is fixed. This connection method is simple, easy to disassemble, but a thin upper body frame structure, the shell carrying capacity is small. Therefore, the main part of the body frame changes in the chassis parts. Altering the baking process is as follows. First, the Department of regulation data and determination of (a) the Department of regulation data The main frame of the total deflection should be arched upward, the two arch between the hearts of the data is 2 to 12 mm; mandrel to both ends of the drop of 10 tolerance Mm, tolerance on the arch of 4 mm; side bend (horizontal bending) of 7 mm.