PalmSHIELD Gorilla hinge gate hardware

Gorilla Hinge 3000
Product Engineering

Stamped Engineering

GORILLA HINGE 3000Download

Product Overview

The Gorilla Hinge 3000 is a heavy-duty gate hinge system designed for industrial/commercial applications, manufactured by PalmShield. The system uses a male/female connection where the male end bolts to the gate post and the female (zerk) end bolts to the gate frame.

Structural Analysis Summary

Key Structural Components

  • Hinge barrels: Male and female ends with 3/4″ hinge pin
  • Hinge leaves: 1/2″ steel plate construction
  • Bearing system: Grease zerks for lubrication maintenance
  • Fastening: 3/8-16 UNC × 1-1/4″ stainless steel flange bolts (whiz bolts)
  • Adjustment capability: 3/4″ vertical adjustment for proper alignment

Load Capacity Analysis

From the engineering calculations (pages 2-3), the structural analysis reveals:

Tension Design Load: 3000 lb live load at end of gate

  • Gate specifications analyzed:
    • 10′ wide × 8′ tall gate
    • 10′ wide × 6′ tall gate (alternative)

Critical calculations show:

  • Moment capacity: 1875 lb-ft
  • Shear capacity: Multiple configurations analyzed
  • Conclusion: “Shear Design Acceptable w/ (2) Hinges”

Hinge Sizing Requirements

The document provides aspect ratio guidelines:

  • 1′ height : 3′-4″ width = 1 hinge (at gate ends)
  • 1′ height : 6′-8″ width = 2 hinges (at gate ends)
  • Bottom hinges match top hinge count but aren’t included in the adjustment table count

Critical Design Notes

  1. Installation requirements: Field welding of stops recommended to prevent lift-off
  2. Maintenance: Pre-greased but requires re-greasing upon installation and periodic maintenance
  3. Structural limitation: When aspect ratio exceeds acceptable parameters for tension, engineer consultation required
  4. Minimum edge distance: 3/4″ specified
  5. Width-to-height ratio: For (2) hinge configurations, top & bottom aspect ratio = 2× (6.6′ : 1′)

Engineering Verdict

The structural analysis confirms the Gorilla Hinge 3000 can handle the specified 3000 lb design load when properly configured with appropriate hinge quantities based on gate dimensions and aspect ratios.Retry