Manufacturing method of coupler coupler tail pin supporting bolt structure device

1. The present utility model relates to the technical field of machinery, in particular to a structural device used for supporting bolts of couplers, couplers and tail pins of railway freight cars.

Background technique:

2. The coupler frame of railway freight car is one of the important parts of the hook buffer device. After the buffer and the clump plate are installed in the coupler box, it is connected with the coupler through the coupler pin to jointly bear the role of vehicle traction and impact force. The coupler pin is an important connecting component of the coupler buffer system, which has the function of connecting the hook body and the coupler frame and as the rotation axis of the hook body. During the use of the existing hook-tail frame, cracks at the rear corner of the hook-tail frame, deformation of the carriage, fatigue and other problems often occur, resulting in the breakage of the hook-tail pin, mainly due to excessive impact force or train vibration. As long as the impact force exceeds the impact force borne by the buffer, there will be a rigid impact between the hook pin and the hook frame, which will easily cause the hook pin to break. If the hook is pinned out during use

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