End Carriage Calculator

Design wheel trucks and frames for stability, strength, and deflection compliance.

1. Crane Loads

kN

mm

kg (For Lateral Load calc)

2. Geometry & Material

mm

Design Recommendation

BOX SECTION

Suggested Dimensions (HxWxT)
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Calculate to see recommendation
Bending Stress: 0 MPa
Allowable: 0 MPa
Calculated Deflection: 0.0 mm
Limit (L/1000): 0.0 mm
Safety Factor: 1.50 (Yield)

Load Case

Considers Vertical loads from wheels + 10% Lateral load from trolley sway.

Safety

Calculated with Dynamic Factors based on Duty Class (1.1 - 1.4).

Deflection

Strict L/1000 deflection limit ensures wheel alignment and smooth travel.

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Understanding End Carriage Design

The end carriage (or end truck) supports the bridge girder and houses the wheels that travel on the runway rail. This calculator helps you size the box section for the end carriage frame to withstand vertical wheel loads and lateral forces.

Inputs Explained

  • Max Wheel Load: The maximum vertical reaction force at a single wheel.
  • Wheels per End Truck: Typically 2 wheels for standard cranes, or 4 wheels (bogie type) for heavy duty cranes.
  • Wheel Spacing (Wheelbase): The distance between the center of the wheels. A longer wheelbase improves tracking but increases the bending moment on the frame.
  • Total Load (for Lateral): Used to calculate the lateral inertia forces (skewing forces) acting on the frame.

Outputs Explained

  • Suggested Dimensions: The recommended Hollow Structural Section (RHS/Box) dimensions (Height x Width x Thickness).
  • Bending Stress: The combined stress from vertical and lateral loads. Must be within the allowable limit for the selected steel grade.
  • Calculated Deflection: The vertical deformation of the frame between the wheels. Kept very low (L/1000) to ensure proper wheel alignment.