Securing Railway Cover Boards Against Vibration
Vibration and collector shoe tension caused loose fasteners on power rail cover boards, risking safety and service disruptions. ERM locknuts provide a reliable, easy-to-install solution that keeps cover boards secure under daily train operations.
Reducing the Effects of Vibration on Railway Cover Boards
The Challenge: Loosened Hardware Compromises Safety and Operations
Railway operators face a persistent problem with cover boards: vibration and tension from collector shoes can loosen or damage fasteners, putting maintenance crews, passengers, and equipment at risk.
With cover boards installed over power rails, lost or dislodged nuts can cause bolts to fall out or be struck by passing trains. This can result in entire sections of cover boards being ripped off, creating dangerous conditions and service disruptions.
The operational and financial consequences are significant:
- Repairs to tracks and trains
- Replacement of cover board assemblies
- Shuttle bus arrangements to manage passenger delays
- Delayed freight deliveries
- Damage to brand reputation and client trust
Recurring failures have been known to cost operators over $1 million per year.
The Operational Impact: Safety and Cost at Risk
Every loosened nut or bolt not only threatens structural integrity but also increases maintenance complexity. Inspectors must repeatedly check cover boards, slowing operations and raising labor costs. In severe cases, equipment damage and service interruptions can cascade, affecting the entire rail network.
The challenge was clear: operators needed a fastener solution that resists vibration, ensures secure assembly, and is easy to install and inspect.
Defining a Practical Objective & Installation of ERM Locknuts
J.Lanfranco proposed a reliable, easy-to-install solution to secure cover boards and protect maintenance crews.
The solution uses:
- ERM locknuts
- 1/2” and 3/8” dual-slotted nut, bolt, nut, and washer assemblies
- Hardware for splice plate assemblies
This combination ensures fasteners remain secure despite vibration and collector shoe impact, while maintaining the clearance necessary for safe and compliant installation. Installation uses standard tools and procedures, keeping operational disruption to a minimum.
Proven Results: Longevity and Operational Security
ERM locknuts provide a long-term, low-maintenance solution to a recurring problem. Cover boards remain securely fastened, reducing maintenance checks, preventing service interruptions, and minimizing the risk to personnel and equipment.
Railway operators can now trust that their cover board installations will remain intact under the rigors of daily train operations, improving safety, reducing costs, and protecting brand trust.