I. Basic Design of Simply Supported Straight Tracks

1. Material Selection

Steel Specifications

• Standard selection: Q235B
• Application: Suitable for suspension track systems under normal working conditions

2. Track Cross-section Standards

I-beam Selection

• Specification range: 16#~45# hot-rolled I-beams
• Recommended type: Type A I-beams preferred
• Technical notes:
  • Same-specification I-beams (e.g., 32A/32B/32C) have identical section height and flange thickness
  • Types B/C have increased flange width and web thickness compared to Type A
  • From economic perspective, B/C types offer limited load capacity improvement with lower cost-effectiveness

3. Key Technical Parameters

3.1 Calculated Span (L)

• Unit: millimeters (mm)
• Definition: Distance between support beams or center distance of connectors
• Significance: Directly determines track internal force calculations

3.2 Radius of Curvature (R)

• Unit: millimeters (mm)
• Definition: Wheel tread curvature radius of electric hoist
• Reference values:
  • ≤1t: R=129mm
  • 2t~3t: R=150mm
  • 5t~10t: R=167mm
• Application: Used to calculate distance e from wheel pressure point to wheel edge (standard value: e=0.164R)

3.3 Technical Parameter Standards

1. Wheel to Track Edge Distance (c)

• Range: 3~5mm
• Purpose: Basis for reduced stress calculation

2. Wheel Configuration (n)

• Quantity range: 4~8
• Selection basis: Lifting capacity and lifting height

3. Wheel Pressure Uneven Coefficient (K)

• Standard range: 1.2~1.5
• Recommended value: 1.4 (when specific parameters unavailable)

4. Standard Wheel Pressure Concentrated Load (Frk)

• Unit: kN
• Calculation content: Includes maximum lifting weight and equipment self-weight

4. Calculation Coefficient Standards

• Variable load partial factor: 1.5
• Dynamic coefficient: 1.05
• Track wear coefficient: 0.9 (for section modulus reduction, applicable to strength and stability calculations)

5. Cantilever Design

Cantilever length must be calculated considering:

• Standard concentrated load
• Track span
• Track section parameters

II. Design Control Factors

Main Control Factors

Track design must meet four core indicators:

1. Strength
2. Stability
3. Deflection
4. Reduced stress

Design Characteristics

• Large span conditions (>6m) with small tracks (<25#): stability or deflection as controlling factors
• Other conditions: reduced stress as primary controlling factor

Additional Considerations

Special attention must be paid to the load-bearing capacity of connectors and connecting bolts, which may become limiting factors for system load capacity.

Note: This guide is for engineering design reference; specific applications require verification based on actual conditions.