路面冷再生机、平地机的前、后机架均采用铰接方式连接,以减小转弯半径。由于机架铰接结构对铰接板的同轴度要求较高,在铰接板铆焊时需要通过工装来保证其位置精度。目前,常用的铆焊方法是先在4块铰接板孔中间穿上通长的工装轴(钢管)进行铆焊,以保证同轴度,再用固定长度的定位钢管穿于工装轴上来保证铰接 Pavement cold regeneration machine, grader before and after the rack are hinged connection, in order to reduce the turning radius. Due to the high requirement for the coaxiality of the hinge plates in the frame hinge structure, the position accuracy needs to be ensured by the tooling during the welding of the hinge plates. At present, the commonly used method of riveting welding is to insert a long tooling shaft (steel pipe) in the middle of the four hinge plate holes for welding to ensure the coaxiality, and then use a fixed length of positioning steel pipe to wear on the tooling shaft to ensure the hinge