Universal Connecting Shaft for Rolling Mill Frames

The universal connecting shaft described here is primarily used for addressing the technical issue of short service life in existing connecting shafts, especially in rolling mill frames. The design improves durability and reliability, offering a more cost-effective and practical solution for mechanical transmissions in harsh conditions.

Key Technical Features

The core design consists of:

• Cross universal joint shaft body.
• Bearing pressure cover that is fixedly connected to a convex circular fork.

The distinguishing feature of this design is that:

• A groove is formed on the convex circular fork.
• On the outer side of the groove, bolt holes are provided, which align with the corresponding bolt holes in the bearing pressure cover.
• The bearing pressure cover is fixedly attached to the convex circular fork using bolts.

This solution ensures that the connecting shaft has sufficient strength, without compromising the performance of the entire cross universal joint shaft. By using standard bolts for fastening, it is both economical and practical.

Performance and Benefits

Experimental results show that the universal connecting shaft modified according to this design has significantly improved service life:

• The service life is doubled, lasting up to one year, compared to the original version.
• The maintenance frequency is greatly reduced.
• The operational efficiency of the rolling mill equipment is significantly improved, leading to higher uptime.

This enhancement not only boosts the economic benefits of the rolling mill but also delivers substantial social benefits due to increased productivity and reduced maintenance costs.

Applications

This universal connecting shaft design is suitable for use in various types of rolling mills and other machinery that operate under harsh working conditions. It can be promoted and applied across different mechanical transmission systems to improve durability and efficiency in challenging environments.