In port infrastructure projects, deep foundations, and bank protection works, combining carrier cranes with vibratory hammers is essential for the efficient driving and extraction of sheet piles and casing pipes.
However, subjecting lifting equipment to continuous dynamic stresses without proper damping triggers costly mechanical failures and unscheduled downtime.
At MG Mining & Construction SAS, specialists in equipment supply and foundation engineering, we analyze the dynamic impact on carrier structures and the importance of integrating high-performance Shock Absorbers into your operations.
The resonance phenomenon: Structural damage in lifting operations
During driving or extraction, a vibratory hammer operates at high dynamic ranges (typically between 20 Hz and 40 Hz). When upward mechanical waves match the natural resonance frequency of the crane, vibrations amplify, generating severe impacts:
1. Lattice boom cranes: Premature steel fatigue
Continuous vibration causes microstructural cracking in the boom’s main chords, lacing, and welds. This accelerates steel fatigue and compromises the crane’s nominal load capacity.
2. Telescopic Cranes: Destruction of Hydraulic Systems
Vertical and transverse oscillations directly affect elevation and telescoping cylinders. Repetitive stress destroys mechanical and hydraulic seals, increasing the risk of fluid leaks, unexpected pressure drops, and catastrophic failures.
Mechanical principles of shock absorbers
To protect lifting assets without reducing soil penetration efficiency, Shock Absorbers operate under key engineering principles designed to isolate upward kinetic energy and convert it into thermal energy through heavy-duty elastomer blocks or hydraulic dampers.
Technical performance comparison on site
| Evaluation Variable | Operation Without Shock Absorber | Operation With MG Mining Shock Absorber |
| G-Force Transmission (Peaks) | 100% acceleration directed to the boom | Up to 70% reduction in vibration peaks |
| Crane Structural Lifespan | Premature degradation due to fatigue | Exceeds 40% increase in structural life |
| Hydraulic Seal Integrity | High risk of leakage and cylinder failure | Complete protection of the hydraulic system |
| Corrective Maintenance Costs | High expenses from unscheduled downtime | Controlled, scheduled preventive maintenance |
Power your foundation projects with MG Mining & Construction SAS
Using a Shock Absorber or dynamic damper ensures that vibration energy remains focused where it belongs—in the ground and on the pile—while fully protecting the crane and maintaining job site safety.
At MG Mining & Construction SAS, we offer a comprehensive portfolio of foundation engineering solutions.
Need a quote for a vibratory hammer or crane protection accessories?
Contact our engineering team directly to receive personalized advice for your next piling or sheet piling project
Frequently asked questions (FAQ)
Does a shock absorber reduce the power or performance of the vibratory hammer?
No. The absorber only isolates the reactive energy attempting to travel upward into the crane. 100% of the eccentric force generated by the hammer remains directed downward into the sheet pile or casing pipe.
Which vibratory hammer brands does MG Mining recommend?
At MG Mining, we distribute and supply parts for world-class brands such as ICE and PVE, offering standard and variable frequency equipment adaptable to excavators and high-tonnage cranes.
Can I use vibratory hammers on rough-terrain (RT) or truck-mounted telescopic cranes?
Yes, provided that a calibrated isolation/Shock Absorber system is mandatorily installed to prevent pulsations from destroying the hydraulic packings of the telescopic boom.