Assembly Quality Control of Bogie Center Plate

Depot repair is an important part of railway wagon maintenance system. It plays an important role in ensuring the technical status of railway wagons, improving railway wagons operation quality and application efficiency, ensuring the safety of trains and smooth railway transportation. The main task of depot repair is to maintain the basic performance of railway wagons and deliver goods in safe and reliable.

The repaired railway wagons must be inspected to be qualified before assembly with bogies. The assembly of bogie center plate should meet the following technical requirements:

• When assembling the lower center plate, It must adopt FS type, BY-B type or BY-A type lock nut, install Φ4mm cotter pin, and matched with 10.9 grade bolts and nuts as specified in GB3098.1, and the BY-B type lock nut must be installed with spring washer.
• Before assembly the bogie center plate, the burrs on the surface of the bolster center plate, the bottom plane of the center plate and around the bolt holes must be removed, the protrusions must be ground flat, and there must be no gap after assembly.
• When adjusting the height of the center plate, the center plate backing plate must use steel backing plates, not more than 2 pieces, the total thickness and the thickness of each backing plate should meet the regulations, and the two backing plates must be fixed by spot welding by four sides.
• There must be no foreign matter in the lower center plate, and the special lubricating grease for the center plate must be evenly filled. (Grease should not be applied to those equipped with a center disc wear disc or a center disc liner).