A fastening bolt for rail connections
By designing a fastening bolt that includes a bolt body, a stop block, a nut, and an elastic element, and utilizing the elastic element to compensate for minor displacements and the mechanical locking of the cotter pin and air bladder, the problem of bolt loosening in track connections is solved, thereby improving stability and extending service life.
CN224377490UActive Publication Date: 2026-06-19SHANDONG LOUIS TONGTU RAIL TRANSIT EQUIPMENT CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG LOUIS TONGTU RAIL TRANSIT EQUIPMENT CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-06-19
AI Technical Summary
Technical Problem
In existing technologies, bolts in track connections are prone to loosening under vibration and impact, leading to a decrease in track smoothness, affecting driving or operational safety, and causing severe wear on components.
Method used
A fastening bolt for rail connection is adopted, including bolt body, stop block, nut and elastic element. The elastic deformation of the elastic element compensates for small displacements, and the mechanical locking and elastic filling of cotter pin and air bladder prevent loosening and wear.
Benefits of technology
It improves the stability and reliability of track connections, reduces safety hazards, extends the service life of bolts, and reduces maintenance costs.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224377490U_ABST
Abstract
This utility model proposes a fastening bolt for rail connections, belonging to the field of track technology. It addresses the problem in existing technologies where bolts are directly used to connect rail clamps and tracks, which are prone to loosening under vibration and impact, leading to decreased track smoothness and affecting train or operational safety. The bolt includes a bolt body that mates with a through hole in the rail clamp. One end of the bolt body has a stop block with a diameter larger than the through hole. A nut is screwed onto the bolt body, and an elastic element is also fitted onto the bolt body, located between the stop block and the nut. This utility model effectively solves the problem of traditional rail connection bolts loosening due to vibration by incorporating the elastic element, improving the stability and reliability of the rail connection and reducing safety hazards caused by bolt loosening. Secondly, the elastic element can buffer the alternating stress generated on the bolt by train operation, reducing bolt fatigue damage, extending bolt service life, and lowering maintenance costs.
Need to check novelty before this filing date? Find Prior Art