To arrange a lower roller near to a sprocket to the utmost while suppressing the complexity of the manufacturing process by bending the joint plate of a motor support connected with a truck frame main body end section to the drive wheel side at least from the lower side to the center of the drive wheel.
A truck frame main body 10 and a motor support 2 are connected via a joint plate 20, and they are welded to the joint plate 20 at the upper section and side section of the track frame main body 10 end section. The end section of a car body leg section 40 is welded at the upper section of the joint plate 20. The joint plate 20 is bent to a sprocket 3 side from the lower side to the center O of the sprocket 3 serving as a drive wheel. The upper side from the bend start section of the joint plate 20 is made vertical. The distance from the lower roller center shaft P arranged at the side end section of the sprocket 3 to the sprocket center O can be shortened.
IWASA KAZUMICHI
HAZAMA SHUICHI
