以转8a型转向架侧架为例，介绍了有限元技术应用于构件疲劳寿命分析的过程。
Using the side frame of the Z8A bogie as an example, this paper introduces the process of fatigue life analysis of a component based on the finite elements technology.
介绍了转8a型转向架加装侧架下交叉支撑装置的改造过程及改造中应注意的问题。
Described are the reform process in which the Zhuan 8a bogies are added with crossed devices under side frames, as well as points which should be paid attention to in the reform.
介绍了下交叉支撑转向架的结构特点和关键技术参数，对侧架导框的加工、侧架与支撑座的组焊和转向架的组装工艺等着重进行了分析。
Mainly analyzed are the technologies in processing of side frame guides, assembly by welding of the side frame and braced seat, and assembly of the bogie.
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