张强

摘 要：介绍了轴线模块全挂车3点或4点支撑各支撑分组合成支撑点位置的确定方法。通过计算分析证明了只要大件重心投影与轴线模块全挂车货台形心重合，不受3点支撑分组悬挂配置选择的影响均能保证全挂车各悬挂均匀受力。通过算例介绍了加入连接平台组成的前后非对称轴线模块加长全挂车大件装载位置的确定方法。

关键词：轴线模块全挂车 悬挂枢轴 支撑分组 合成支撑点 连接平台 轴线模块加长全挂车

Determination Method of the Large Loading Position of Axis Module Full Trailer

Zhang Qiang

Abstract：The determination method of the position of the composite support point of each support group of 3 or 4 points of the axis module full trailer is introduced. Through calculation and analysis， it is proved that as long as the projection of the center of gravity of the large piece coincides with the center of gravity of the cargo platform of the axis module， it is not affected by the selection of the suspension configuration of the 3-point support group， and the uniform force of each suspension of the full trailer can be guaranteed. Through the example， the method of determining the loading position of the large piece of the extended full-trailer with the front and rear asymmetric axis module composed of the connecting platform is introduced.

Key words：axis module full trailer， suspension pivot， support grouping， synthetic support point， connection platform， axis module extension full trailer

1 引言

軸线模块全挂车由一个或两个转向端梁、若干个轴线模块组成。在轴线模块间加入连接平台，该车型本文称为轴线模块加长全挂车。轴线模块全挂车及加长全挂车，常见的为2、3、4纵列车型。本文所述全挂车液压悬挂通过各分组油路串联，形成3组或4组支撑回路，俗称3点支撑或4点支撑，3点支撑较为常用，4点支撑为超静定结构，常用于重量较轻、道路条件较好且3点支撑横向稳定性难以保证的大件运输。各支撑回路中所有悬挂支撑力的合力所在位置本文称为合成支撑点，支撑回路液压悬挂非对称分布时，初涉大件运输行业的工程技术人员往往不知如何确定合成支撑点位置，无法画出3点或4点支撑稳定三角形或四边形，通过本文学习可解决此问题。对于轴线模块全挂车大件装载时一般要求重心投影与货台形心重合，本文证明了按该要求装载大件设备，不考虑车辆横稳性，3点支撑各分组悬挂配置的选择对各悬挂均匀受力没有影响。……