Introduction to Aluminum Alloy Truss Square Head The aluminum alloy truss square head is a key connecting component at Aluminum Truss Square Head the end of aluminum alloy truss systems, mainly used for precise alignment, stable splicing, and load transfer between truss units. Designed to match the lightweight and corrosion-resistant properties of aluminum alloy trusses, it’s widely applied in scenarios like stage performances, square head aluminum truss exhibition booths, and temporary event structures—where quick assembly, portability, and reliable load-bearing are critical. It is the key element to ensure that aluminum truss splicing is both safe and flexible. I. Core Functions: Centered on "Flexible Connection" and "Efficient Load Transfer"
1. Quick and Precise Truss Alignment
Typically welded or integrally formed at the end of aluminum truss main tubes,durable aluminum truss square head the square head’s rectangular shape (common cross-sections: 100mm×100mm to 200mm×200mm) acts as a natural positioning guide. When splicing two truss units, the square heads on both ends can be aligned in seconds, with alignment deviation controlled within 1mm—avoiding the rotation or misalignment issues common with circular connectors. The square structure also limits lateral movement after splicing, making the truss 15%-25% more stable against sway compared to round alternatives.
2. Smooth Multi-Directional Load Transmission
To balance light weight and strength, adjustable aluminum truss square head the square head uses a "thickened edge design": its thickness is 1.2-1.8 times that of the truss main tube (e.g., if the truss tube has a 3mm wall thickness, the square head is 4-5mm thick). 4-6 sets of bolt holes (8-12mm in diameter) are evenly spaced on its surface. After trusses are aligned, high-strength bolts (Grade 8.8 or above) fasten the square heads, allowing vertical loads (like lighting, LED screens) and horizontal forces (like mild wind) to spread evenly across adjacent truss units. This prevents local stress buildup at the splice and reduces the risk of truss deformation.
3. Compatibility with Rapid Assembly Needs
Aluminum trusses are often used in temporary setups (e.g., one-day events or pop-up exhibitions), so the square head is designed for Rigging Hardware hassle-free on-site use. Its smooth surface and chamfered bolt holes (15° angle) make bolt insertion quick—no need for specialized tools to adjust alignment. For small teams (2-3 people), the square head’s positioning function cuts down truss assembly time by 30% compared to non-square connectors. II. Key Structure and Material Traits
1. Basic Structural Design
Load-Bearing Body: Mostly a hollow square structure (to keep weight low), with internal reinforcing ribs (spaced 25-40mm apart) added for heavy-duty models. These ribs prevent the square head from collapsing under pressure, while the hollow design keeps single-unit weight down—usually 0.8-1.5kg for a 150mm×150mm square head, easy for one person to handle.
Bolt Hole Layout:Truss Accessories Holes are symmetrically placed around the square head’s center to ensure even force distribution when bolts are tightened. The hole edges are chamfered to avoid scratching bolts during installation and reduce stress concentration at sharp edges. Truss Connection Interface: The end of the square head that attaches to the truss main tube uses a "stepped socket"—it fits over the truss tube and is then fully welded (weld height ≥5mm, no gaps or incomplete welds). This fuses the square head and truss into a single rigid piece, preventing separation under load.
2. Material and Surface Treatment
Core Material: Made of 6061-T6 aluminum alloy, the same as most aluminum trusses—ensuring consistent strength and material compatibility. This alloy has a tensile strength of ≥260MPa and yield strength of ≥240MPa, enough to support common loads (200-500kg per truss unit) without deformation. The material’s low impurity content (sulfur and phosphorus ≤0.045%) avoids hidden flaws that could weaken load-bearing.
Indoor scenarios (theaters, exhibition halls): Anodization (oxide film thickness ≥10μm) for scratch resistance and protection against condensation from stage lights. Service life is 8-10 years with regular maintenance.
Outdoor scenarios (open-air concerts, temporary stalls): Anodization + electrostatic spraying (total coating thickness ≥60μm). The coating resists rain, UV rays, and temperature changes (-30℃ to 60℃), with a corrosion-resistant life of 6-8 years.
III. Tips for Selection and Installation
1. Selection Rules: Match Truss Specs and Usage Needs
Cross-Section Compatibility: The square head’s cross-section must match the truss end size (e.g., a 120mm×120mm truss needs a 120mm×120mm square head). Mismatched sizes cause loose splicing and safety risks.
Load Adaptation: For light loads (e.g., small stage lights, banners), choose standard hollow square heads. For heavier loads (large LED screens, heavy audio gear), Truss Hardware Accessories opt for models with internal reinforcing ribs—ensuring the square head’s rated load is at least 1.2 times the actual load to leave a safety buffer.
2. Installation Guidelines
Pre-Installation Check: Inspect the square head for cracks, dents, or coating damage. Clear dust or debris from bolt holes to ensure bolts fit smoothly.
Bolt Tightening: Use the specified high-strength bolts (do not substitute with ordinary bolts). Tighten with a torque wrench to the recommended level (25-35N·m for M8 bolts, 35-45N·m for M10 bolts) using a diagonal cross pattern—this keeps force even across the square head.
Post-Installation Verification: After assembly, gently shake the truss to check for looseness. Use a level to confirm the spliced truss is straight (deviation ≤2mm per meter). For outdoor setups, double-check the square head’s coating for scratches—touch up with anti-corrosion paint if needed.
IV. Typical Application Scenarios
Stage Performances: Used to splice aluminum trusses into 6-12m main stage frames, supporting lighting arrays and backdrop screens. The square head’s quick alignment cuts down setup time for one-day shows.
Exhibition Booths: Connects trusses to Stage Hardware Accessories build 5-8m span booth frames, holding brand logos and display props. Its light - weight structural design facilitates effortless transportation among exhibition halls. Temporary Event Structures: Spliced into 8-10m truss frames for outdoor markets or community events, with corrosion-resistant square heads standing up to rain and sun—no frequent maintenance required.
Wuxi Zhongshengwei Metal Products Co., Ltd.
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