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Investigation on the Impact Energy of a Hydraulic Breaker
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 30, 2007 by SAE International in United States
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Percussive breaking is basically a process in which short duration blows with high force intensity are applied in rapid succession, resulting in rock, concrete or pavement fragmentation. The machine for such a task is the hydraulic breaker which turns the hydraulic energy supplied by a positive displacement pump into mechanical energy as percussions of a piston against a chisel.
This work presents the results of experimental tests carried out on a hydraulic breaker to determine its blow impact energy. Then, using these data, theoretical considerations are formulated in order to understand the phenomenon of the tool loading especially at the instant of the impact of the piston against the chisel, leading to the energy release.
CitationFicarella, A., Giuffrida, A., and Laforgia, D., "Investigation on the Impact Energy of a Hydraulic Breaker," SAE Technical Paper 2007-01-4229, 2007, https://doi.org/10.4271/2007-01-4229.
- Vitulano, M.: Directional Control Valve to Obtain a Hydraulic Appliance the Alternative Motion of a Piston Operating to Charge and Fire a Tool, Specially Suitable for Hydraulic Hammers, European Patent no. 0085279
- Vitulano, M.: Method to Automatically Adjust the Functional Parameters of a Percussion Apparatus, European Patent no. 0426928
- Giuffrida, A., Laforgia, D.: Modelling and Simulation of a Hydraulic Breaker, International Journal of Fluid Power, Vol. 6, Issue 2, August 2005, pp.47-56
- Ficarella, A., Giuffrida, A., Laforgia, D.: Numerical Investigations on the Working Cycle of a Hydraulic Breaker: Off-Design Performance and Influence of Design Parameters, International Journal of Fluid Power, Vol. 7, Issue 3, November 2006, pp.41-50
- Elías, D. A., Chiang, L. E.: Dynamic Analysis of Impact Tools by Using a Method Based on Stress Wave Propagation and Impulse-Momentum Principle, ASME Journal of Mechanical Design, March 2003, Vol. 125, pp. 131-142
- Fischer, H. C.: On Longitudinal Impact I, Appl. Sci. Res., Section A, Vol. 8, pp. 105-139
- Fischer, H. C.: On Longitudinal Impact II, Appl. Sci. Res., Section A, Vol. 8, pp. 278-308
- Fischer, H. C.: On Longitudinal Impact III, Appl. Sci. Res., Section A, Vol. 9, pp. 9-42
- Fairhurst, C.: Wave Mechanics of Percussive Drilling, Mine & Quarry Engineering, March 1961, pp. 122-130
- Lundberg, B.: Microcomputer Simulation of Stress Wave Energy to Rock in Percussive Drilling, Int. J. Rock Mech. Min. Sci., Vol. 19, 1982, pp. 229-239
- Lundberg, B.: Microcomputer Simulation of Percussive Drilling, Int. J. Rock Mech. Min. Sci., Vol. 22, 1985, pp. 237-249
- Karlsson, L. G., Lundberg, B., Sundin, K. G.: Experimental Study of a Percussive Process for Rock Fragmentation, Int. J. Rock Mech. Min. Sci., Vol. 26, 1989, pp. 45-50
- Measuring Guide for Tool Energy Rating for Hydraulic Breakers, developed by the Mounted Breaker Manufacturers Bureau of the Association of Equipment Manufacturers, Milwaukee (USA), 2001
- Beckwith, T. G., Marangoni, R. D.: Mechanical Measurements, 4th Edition, Addison Wesley
- Fu, C. C., Paul, B.: Stability of Motion of Impact Tools, International Journal of Solids Structures, Vol. 4, 1968, pp. 897-905
- Thomson, W. T.: Theory of Vibration with Applications, 4th Edition, Chapman & Hall
- Shi, P.: Simulation of Impact Involving an Elastic Rod, Computer Methods in Applied Mechanics and Engineering, Vol. 151, 1998, pp. 497-499
- Conway, H. D., Jakubowski, M.: Axial Impact of Short Cylindrical Bars, ASME Journal of Applied Mechanics, December 1969, pp. 809-813
- Love, A. E. H., A Treatise on the Mathematical Theory of Elasticity, Dover Publications, New York, 1944