Core Differences Between Extremal Interlocked Landing Gear And Conventional Landing Gear
Dec 29, 2025
Core Difference Comparison Table
| Comparison Dimension | Extremal Interlocked Landing Gear | Conventional Landing Gear | Core Impact |
|---|---|---|---|
| Core Mechanism | Built-in rigid interlocking synchronization mechanism; left and right struts are forced to retract/extend synchronously with consistent height | No interlocking function; left and right struts are driven independently with inconsistent height and movement | Interlocked models eliminate unilateral tilting/jamming, while conventional models are prone to unstable support due to uneven loading |
| Structural Strength | Heavy-duty steel + reinforced locking system (e.g., dual lifting nuts) + wear-resistant buffer feet | Regular carbon steel + single-stage locking + standard support feet | The impact resistance and wear life of interlocked models are 2–2.5 times that of conventional models, suitable for heavy-load and harsh road conditions |
| Safety Redundancy | Dual locking protection + interlock failure safeguard + synchronous position feedback | Single-stage locking without failure backup; manual level calibration required | Interlocked models significantly reduce the risk of "collapse", while conventional models rely on manual operation accuracy |
| Operational Efficiency | One-click synchronous retraction/extension with automatic leveling, ideal for rapid loading/unloading | Step-by-step leveling and repeated calibration required, time-consuming and experience-dependent | Interlocked models improve operational efficiency by over 50%, suitable for high-frequency loading/unloading scenarios |
| Working Condition Adaptability | Heavy-duty trailers (＞15 tons), unpaved/soft/sloped ground | Light-to-medium load (≤12 tons), flat hardened pavement | Interlocked models expand the application scope, while conventional models are strictly limited by terrain and load capacity |
| Maintenance Logic | Focus on maintenance of interlocking gears/shafts/lubrication; longer overall service life | Independent maintenance of each strut; locking components and support feet are prone to wear | Interlocked models have slightly higher single maintenance costs but fewer annual maintenance times |
| Cost & Positioning | Higher initial procurement cost; positioned for professional heavy-duty/specialized trailers | Low cost; positioned for general civil/light-load trailers | Interlocked models are suitable for long-term high-frequency heavy-load operations, while conventional models are for light-load low-frequency use |
Key Mechanism & Working Condition Adaptability Analysis
Synchronized Interlocking Mechanism (Core Differentiator)
- Extremal interlocked landing gear achieves forced synchronization of left and right struts via gears/connecting rods/shaft systems, with a height difference ≤5mm during retraction/extension. The supporting surface remains level at all times, preventing structural deformation and support failure caused by uneven loading, especially in heavy-load or sloped environments.
- Conventional landing gear lacks interlocking function; left and right struts are leveled manually by visual inspection, which often leads to a height difference ＞20mm. Under heavy loads, this may cause unilateral overload, support foot damage, or even trailer tilting.
Locking & Safety Design
- Interlocked models come standard with dual locking protection (e.g., primary/secondary lifting nuts) and interlock fracture safeguards. Even if a single lock fails, the interlocking mechanism can still bear the load temporarily, providing a buffer for emergency response. Synchronous position sensors provide real-time status feedback to avoid misoperation.
- Most conventional models adopt single-stage locking without failure backup. Improper leveling or worn locking components may lead to "strut collapse" accidents, with risks increasing as load capacity and terrain harshness rise.
Working Condition & Efficiency Boundaries
- Interlocked models are suitable for heavy loads over 15 tons and unpaved roads such as construction sites, mining areas, and field operations. Wear-resistant buffer feet (e.g., 450HBW wear-resistant steel) can withstand frequent impacts and abrasion, making them ideal for high-frequency operation scenarios like logistics fleets and engineering equipment transportation.
- Conventional models are more suitable for light-to-medium loads ≤12 tons, primarily on hardened pavement. Under high-frequency heavy-load or complex terrain conditions, they are prone to issues such as rapid wear of support feet and loose locking, requiring more frequent maintenance.
Operation & Maintenance Key Points
- Interlocked models: Extremely easy to operate with one-click synchronization. However, regular inspection of interlocking mechanism lubrication and gear surface wear is required to prevent rust and jamming. When support feet are worn to the limit, they must be replaced as a whole to ensure synchronization accuracy.
- Conventional models: Cumbersome to operate with repeated height adjustments for left and right struts. Maintenance focuses on strut seals, locking mechanisms, and support feet, with low cost for individual part replacement but requiring frequent inspections.
