| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a railroad vehicle truck, which can facilitate assembling accurately each member constituting the vehicle truck while attaining one side access in welding. <P>SOLUTION: In the method for manufacturing the railroad vehicle truck, an approximately H-shaped upper surface member 11 wherein the upper surface part of a side beam 2 is integrated with the upper surface part of a lateral beam 4, and an approximately H-shaped bottom surface member 12 wherein the bottom surface part of the side beam 2 is integrated with the bottom surface part of a lateral beam, are prepared, and side surface members 13 to 17 are connected to the upper surface member 11 and the bottom surface member 12 through laser welding to form side beams 2 and a lateral beam 4. Thus, a connection line is allowed to exist only on the upper surface side and bottom surface side of the vehicle truck 1, attaining one side access in welding by reversing an intermediate connection body 24, which facilitates the assembling of the vehicle truck 1. Furthermore, the use of the laser welding can locally limit a heating range to suppress heat distortion, with enhanced assembling accuracy. <P>COPYRIGHT: (C)2012,JPO&INPIT |
