Tower Crane Fixing Angle

Tower Crane Fixing Angle is a key reinforcement component connecting the tower body and the building structure, and is usually made of high-strength steel to enhance local pressure bearing and shear resistance. The design fixes the tower section and support system at a specific angle to effectively disperse the dynamic load and wind vibration stress and prevent structural deformation or displacement. It has the characteristics of corrosion resistance and fatigue resistance, can be bolted or welded and installed, and is suitable for the rigid connection between the tower crane and the main body of the building in high-rise construction, ensuring the overall stability and safe operation, and regularly checking the fastening status and structural integrity.

1. Ultra-high strength material to ensure structural rigidity

The fixed angle is made of Q550D high-strength low-alloy steel (in line with GB/T 1591 standard), which is formed by multi-directional die forging process to eliminate internal grain boundary defects and ensure no plastic deformation under dynamic load.

Key figures:

Single-node tensile strength: ≥650MPa

Shear capacity: ≥1,200kN (certified by 3rd party laboratory)

Safety factor: 1.8 times the rated load (limit test up to 2,160kN without breakage)

Key Benefits:

Resist extreme external impacts such as strong winds (12 magnitude) and earthquakes (8 intensity) to prevent the risk of structural overturning caused by connection failure.

It is suitable for lifting overweight prefabricated parts (such as nuclear power plant pressure vessels, bridge main tower sections) to ensure the safety of high-altitude work.

2. Precise hole design to achieve fast and accurate installation

The fixed angle is laser-cut and pre-machined holes, and the hole diameter tolerance is controlled at ±0.1mm, and hot-dip galvanized high-strength bolts (grade 10.9) are equipped as standard to ensure seamless docking with the standard section of the tower body.

Innovative Design:

Multi-aperture compatible: support Φ30mm/Φ42mm bolt mixing, suitable for different brands of tower cranes.

Anti-misalignment card slot: V-shaped guide groove is preset at the edge, and the high-altitude installation deviation is <2mm, and the efficiency is increased by 60%.

Key Benefits:

The installation time of a single fixed angle has been reduced from 4 hours to 1.5 hours, reducing the risk of working at height.

There is no need for on-site reaming or welding, which can lead to a loss of material strength in the heat-affected zone.

3. Double protection of fatigue resistance and corrosion resistance

In view of long-term alternating load and harsh environment, the fixed angle adopts surface shot peening strengthening process (coverage rate ≥98%) + zinc-nickel alloy coating (thickness ≥ 25μm), and passes 3 rigorous tests:

Testing & Certification:

Salt spray test: 2,000 hours without red rust (ASTM B117 standard)

Cyclic load test: 500,000 cycles ± 800kN alternating load, crack propagation < 0.2mm (ISO 12107 standard)

Low temperature impact test: impact energy ≥ 45J at -40°C (GB/T 229 standard)

Key Benefits:

The service life is extended to more than 20 years, reducing replacement costs.

Adapt to high humidity and high salt spray corrosive environments such as coastal and industrial areas.

4. Modular expansion design, flexible adaptation to a variety of working conditions

The fixed angle supports multi-angle adjustment (30°/45°/60°) and length expansion to meet the needs of different attachment distances and space constraints.

Typical configuration:

Standard version: length 1.5m, suitable for 80% of conventional tower crane models.

Extended version: It can be extended to 3.2m by splicing modules, and the maximum support span is up to 8m.

Special-shaped customized version: support asymmetrical angle and special-shaped cross-section design (load distribution map required).

5. Intelligent preload monitoring (optional)

The integrated wireless strain sensor monitors the bolt preload status in real time to prevent connection failure due to loosening.

Monitoring Functions:

Preload Deviation Alarm: Trigger an early warning when the bolt tension loss >15%.

Data visualization: View real-time force cloud map through the mobile app to locate high-risk nodes.

Historical Traceability: Automatically generate PDF reports in compliance with ISO 9001 quality management traceability requirements.

Key Benefits:

Reduce the frequency of manual inspections and reduce the risk of working at height.

Enable preventative maintenance to avoid sudden structural accidents.

Super high-rise building construction: 650MPa tensile strength + shot peening strength, the service life is increased by 3 times, which effectively solves the problem of fatigue cracking of connection joints caused by strong wind

Sea-crossing bridge project: zinc-nickel coating + Dacromet bolts, corrosion resistance ≥ 20 years, effectively reducing the problem of bolt rust caused by salt spray corrosion

Installation in narrow space: 30°-60° multi-angle adjustment, the installation flexibility is increased by 70%, and the problem of inability to adapt to complex structures caused by fixed angles is solved

24-hour customer service, the first time to respond

Lifetime technical support, free training and guidance, to solve the problem of installation and use

Regular customized product delivery, global response, please contact us now!

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