Pile driver with energy monitoring and control circuit

Details Pile driver with energy monitoring and control circuit Pile driver with energy monitoring and control circuit

E - Fixed Constructions

02

D

E02D 13/00 (2006.01) E02D 7/06 (2006.01)

Patent

CA 2466862

A pile driver comprises a hammer for impacting a pile, a velocity sensor for measuring the velocity at impact, and a control system for adjusting the hammer stroke in accordance with the readings from the velocity sensor so that the optimal impact energy is imparted to the head of the pile. Optionally, the system further comprises a pile driving analyzer (including at least one strain gauge and/or an accelerometer) mounted on the side of the pile itself to determine whether the impact loading on the pile is below the maximum allowable stress. If the pile driving analyzer senses an overload of stress on the pile, the control system will reduce the velocity of the subsequent hammer stroke so that it no longer exceeds the maximum allowable stress.

Appareil de battage comprenant un marteau pour battre un pieu, un capteur de vitesse pour la mesure de la vitesse à l'impact et un système de contrôle pour ajuster la course du marteau selon les valeurs relevées du capteur de vitesse afin de transmettre de manière optimale l'énergie d'impact à la tête du pieu. En alternative, le système comprend également un analyseur de battage du pieu (avec au moins un extensomètre et/ou un accéléromètre) monté sur la côté du pieu proprement dit pour déterminer si la contrainte d'impact sur le pieu est inférieure à une valeur de contrainte maximale permise. Si l'analyseur de battage du pieu décèle une contrainte excessive sur le pieu, le système de contrôle réduit la vitesse de la course du marteau subséquente afin de ne plus excéder la valeur de contrainte maximale permise.

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