Bridge Crawler / Gate 01

Rig Zero

A guarded bench fixture for characterizing one magnetic wheel module before committing to the full crawler chassis.

Baseline issuedQuotes requiredNo adhesion claim yet

Questions to answer

  • Retention force on each documented steel coupon
  • Sliding force by orientation and surface condition
  • Motor movement and holding margin
  • Power-loss and emergency-stop behavior
  • Effects of paint, rust, gaps, curvature and debris

Advance only when

  • At least three repeatable runs per condition
  • Raw data, calibration and uncertainty retained
  • Design safety factor demonstrated on approved surfaces
  • Independent catch and power-loss behavior verified
  • Mechanical and safety reviewers sign results

Controlled Sequence

Build → calibrate → load → fault → decide

  1. Fixture reviewGuard, load cell, catch and remote isolation.
  2. Coupon baselineRecord material, coating and contamination.
  3. Static retentionMeasure peak force and repeatability.
  4. Shear and motionMeasure slide, torque, current and heat.
  5. Fault behaviorTest stop, power loss and emergency stop.
  6. Review gateAdvance, redesign or stop from evidence.

Working Files

Controlled package

BOM CSVParts for quotation. Available on request.Test protocolEvidence procedure. Available on request.Risk registerHazards and controls. Available on request.Project recordStatus and next gate. Available on request.