The adjustable base for stage Truss is a core foundational accessory in the Stage Truss System. Rigging Hardware It is used to support the main truss structure, adjust height deviations, and adapt to uneven ground. Directly influencing the overall levelness, stability, and safety of the truss, it is widely applied in scenarios such as indoor and outdoor performances, exhibition construction, and event stages. I. Core Functions: Addressing Truss Accessories Two Key Issues of "Foundation Adaptation" and "Stable Support" 1. Flexible Height Adjustment for Adapting to Complex Ground
The base is equipped with a built-in liftable structure (e.g., threaded lead screw, buckle-type adjustment rod), Stage Accessories with an adjustment range typically ranging from 5cm to 30cm (some heavy-duty models can reach up to 50cm). Truss Hardware Accessories It can quickly correct ground height differences (such as slopes in outdoor venues or uneven indoor floor tiles), ensuring the top of the truss stays on the same horizontal plane and avoiding uneven stress on the truss caused by foundation tilting. 2. Load Distribution to Protect Ground and Truss
The bottom of the base is mostly designed with a large-area load-bearing plate (15cm-30cm in diameter, often made of reinforced nylon or steel plate). This plate distributes the weight of the truss and upper equipment (lighting, LED screens, etc.) to the ground, preventing local excessive pressure from damaging the ground (e.g., hotel marble floors, exhibition center floors). Meanwhile, the connection interface (such as a flange with bolt holes, latch hole) on the top of the base precisely matches the main truss, ensuring direct load transmission and reducing the risk of truss deformation.
3. Auxiliary Stability for Adapting to Multi-Scenario Needs
Some models are equipped with anti-slip patterns (rubber pads at the bottom) or ground anchor holes (for outdoor fixation):
The anti-slip design enhances friction between Stage Hardware Accessories the base and the ground, preventing slight displacement of the truss; The ground anchor Adjustable Base for Stage Truss holes can be used with expansion bolts to fix the base on concrete ground, improving wind resistance and anti-shaking capabilities outdoors (especially suitable for open-air performances and large-scale exhibitions).
II. Core Structure and Common Types
1. Basic Structural Composition (Universal Model)
Adjustment Mechanism: Stage Truss Base with Adjustment The core functional component, mainly a "threaded lead screw + locking nut". The overall height is adjusted by rotating the lead screw; after adjustment, the locking nut is tightened to fix the height and prevent height drop due to vibration during use.
Bottom Load-Bearing End: Responsible for load distribution, it is divided into "fixed load-bearing plates" (suitable for flat ground) and "universal load-bearing plates" (capable of small-angle tilting, adapting to slightly sloped ground).
III. Selection and Usage Precautions
1. Load Matching: Not Less Than 1.2 Times the Total Weight of the Truss and Equipment
When selecting a base, Modular Stage Truss Base calculate the "truss self-weight + weight of upper mounted equipment". The rated load capacity of the base must include a safety margin (e.g., for a total weight of 500kg, a base with a rated load capacity of ≥600kg should be selected) to avoid deformation or fracture of the adjustment mechanism due to overloading.
2. Material Compatibility: Consistent with the Main Truss Material
For aluminum trusses: Prioritize Durable Stage Truss Base aluminum alloy/stainless steel bases to avoid electrochemical corrosion caused by contact between aluminum and carbon steel, and extend service life;
For steel trusses: Select carbon steel or hot-dip galvanized bases to ensure strength compatibility and prevent the base from being damaged before the truss.
3. Installation Specifications: Ensuring Levelness and Locking
Before installation, use a level to calibrate the height of each base, ensuring the horizontal error of the truss top is ≤2mm/m;
After adjusting the height, the "locking nut" must be tightened, and check that the adjustment lead screw is not loose (tap the lead screw lightly; no shaking indicates it is qualified);
When using bases with ground anchors outdoors, the ground anchors must be buried ≥15cm deep in the ground (or fixed with expansion bolts) to ensure wind-resistant stability.
4. Scenario Adaptation: Avoid "Using Light Bases in Heavy-Duty Scenarios"
Lightweight bases can be used for temporary indoor construction (e.g., small press conferences); for outdoor, heavy-duty, or long-term use scenarios, heavy-duty bases or bases with ground anchors must be selected.
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