Quick assembling and welding fixture used for side beams of engineering car framework

The invention discloses a quick assembling and welding fixture used for side beams of an engineering car framework. The quick assembling and welding fixture comprises a main frame, positioning baffles, first compression devices, second compression devices and hinge pins. The fixture is used for solving the problems that welding deformation is caused and the size is difficult to control during assembly and welding of the side beams; by structural study and analysis on the side beams, the fixture can achieve positioning of an upper cover, a lower cover and a vertical plate of the side beams during assembling, so that side beam deformation in the welding process is prevented, the purpose of quick and efficient assembly is achieved, the assembly quality of the side beams is ensured while the time is shortened, and the production rate is improved. 本发明介绍了种用于构架侧梁快速组对及焊接的工装，包括主架、定位挡板、第压紧装置、第二压紧装置和销轴；该工装用于解决侧梁在组对和焊接时产生焊接变形及尺寸难控制的问题，通过对其结构研究分析，利用本工装，实现组对时侧梁上下盖板与立板的定位，以及防止焊接过程中侧梁变形，从而达到快速、高效组对的目的，在节约时间的同时，还能够保证侧梁的组对质量，提