A mechanically enforced, two-state operating system using frames, guides, latches, and prepared beams to physically prevent binding and unsafe overlap between crane and monorail operations.
This project resolved binding issues between an existing crane and monorail by adding a steel frame assembly that enforces exclusive use of the shared runway.
Scope
Engineering design, fabrication, and P.Eng. certification of a complete mechanical mitigation system, including frames, guides, latches, and stops.
Design
The original setup allowed uncontrolled overlap on the same beam, creating safety risks. The solution adds bolted monorail frames with guide plates, flange slides, and latch assemblies that mechanically lock one system while enabling the other.
Features
The system defines two clear states:
- Monorail mode: Trolley operates; crane movement blocked.
- Crane mode: Crane enabled; monorail secured and hand chain locked out.
Integration uses beam web cutouts and precision attachments for minimal disruption to existing steelwork. Only one system can operate at a time.

