







Description of Triangle Lifting Ring
1. In-depth Analysis of Structural Innovation and Functional Core
The Triangle Lifting Ring is a robust, high-strength connection for multi-directional lifting. It surpasses traditional single ring lifting limitations, ensuring secure operations under challenging conditions through its innovative triangular mechanical framework and modular lifting points. The core structure of the ring boasts the following sophisticated elements:
Triangle Main Frame:
Equilateral/Isosceles Geometry: By strategically optimizing aspect ratios like 1:1:1 or 1:1.2:1.2, stress is effectively dispersed, significantly reducing the risk of single-point stress concentration. This enhancement boosts the bearing capacity by an impressive 30% - 50% compared to conventional single ring suspension points.
Material Strengthening: Utilizing Q355B high-strength steel (yield strength ≥ 355MPa) or alloy steel such as 42CrMo, combined with advanced heat treatment processes (quenched and tempered HRC 28-32), we significantly enhance fatigue resistance and longevity.
Multi-Directional Suspension Point Design:
360° Rotating Lifting Ears: Each vertex is equipped with a forged lifting ear (diameter ≥ 20mm) capable of full rotational freedom, accommodating various sling angles seamlessly. This feature minimizes sling twisting during lifting operations.
Anti-Decoupling Insurance: The lifting ears are integrated with spring locking mechanisms, maintaining a locking rate exceeding 95% under impact lifting loads, thereby effectively preventing decoupling risks.
• Scalable Interface:
Modular Lifting Points: The main frame is designed with M20-M36 threaded holes or ear interfaces, facilitating the swift addition of accessories like lifting rings and shackles, catering to the diverse needs of multi-device serial lifting operations.
• Weight Sensor Integration: Optional embedded strain gauges with high accuracy (± 0.5%) offer real-time lifting load monitoring, providing critical feedback to the control system for enhanced operational safety.
2. Core Functional Advantages
Multi-Directional Force Stability:
The innovative triangular frame distributes the lifting load into three key components. Verified through finite element analysis (FEA), this design reduces the stress concentration factor on the main frame by 60% compared to single ring lifting points, especially at 45° lifting angles.
The lifting lug's rotational freedom efficiently mitigates additional bending moments from sling twisting, thereby reducing vibration amplitude in lifting equipment, ensuring smoother and safer operations.
4. Typical Application Scenarios
Heavy Equipment Lifting:
When lifting wind turbine blades (each weighing ≥ 30 tons), the triangular lifting ring's multi-directional force distribution disperses stress at the lifting points, preventing local deformation of the blades.
For lifting the pressure vessels of nuclear power plant reactors (weighing ≥ 500 tons), high-strength alloy steel lifting rings (Q960E) are employed to meet stringent safety standards for nuclear-grade equipment lifting.
• Complex Structure Hoisting:
Bridge steel box girder lifting is achieved through modular lifting point expansion interfaces, ensuring the synchronous lifting of multiple points with precision error maintained within ± 5mm.
The modular lifting of offshore platforms utilizes a composite surface coating of hot-dip galvanized and fluorocarbon paint on lifting rings, undergoing salt spray tests (≥ 2000 hours), making them ideal for highly corrosive marine environments.