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Machine translation
1. (WO1980001091) DEVICE FOR MAKING DRILLINGS INTO THE ROCK,SOIL,ETC
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/001091    International Application No.:    PCT/EP1979/000090
Publication Date: 29.05.1980 International Filing Date: 15.11.1979
IPC:
B25D 9/12 (2006.01), E21B 4/14 (2006.01), E21B 4/20 (2006.01), E21B 7/24 (2006.01)
Applicants:
Inventors:
Priority Data:
2850225 20.11.1978 DE
Title (EN) DEVICE FOR MAKING DRILLINGS INTO THE ROCK,SOIL,ETC
(FR) DISPOSITIF POUR LA REALISATION DE FORAGES DANS LE ROCHER, LA TERRE, ETC.
Abstract: front page image
(EN)Device for making drillings into the rock, soil, etc., of which the motor is connected by a rotary coupling or similar to a drilling rod at the end of which is fitted a percussion apparatus. The object of the invention is to improve such device by adapting it in a simple manner, while maintaining the performances of the percussion apparatus, to the different conditions of the drilling. This is achieved due to the fact that the movements of the piston of the percussion apparatus (4) are caused by a pressure means by means of a pulse generator (9), which is connected to the rotary coupling (2) or similar and to the drilling rod (3) on top and at the bottom of the cylinder in which the striker piston moves. It is desirable to adjust the frequency of the percussion apparatus with the pulse generator (9), the adjustment of the frequency of the pulse generator (9) is effected automatically and depends on the feed conditions of the drilling. To move the percussion apparatus (4) a hydraulic means is used.
(FR)Dispositif pour la realisation de forages dans le rocher, la terre, etc, dont le moteur est relie par un accouplement rotatif ou analogue a une tige de forage a l"extremite de laquelle est prevu un appareil de percussion. L"invention a pour but d"ameliorer un tel dispositif en permettant de l"adapter d"une maniere simple, tout en gardant les performances de l"appareil de percussion, aux differentes conditions de forage. Cela est realise par le fait que les mouvements du piston de l"appareil de percussion (4) sont provoques par un moyen de pression au moyen d"un generateur d"impulsions (9) qui est relie a l"accouplement rotatif (2) ou analogue et a la tige de forage (3) en haut et en bas du cylindre dans lequel se meut le piston frappeur. Il est avantageux de pouvoir regler la frequence de l"appareil de percussion sur le generateur d"impulsions (9). Le reglage de la frequence du generateur d"impulsions (9) se fait automatiquement et depend des conditions d"avancement du forage. Pour faire mouvoir l"appareil de percussion (4) on utilise un moyen de pression hydraulique.
Designated States:
Publication Language: German (DE)
Filing Language: German (DE)