Trench wall cutter

E - Fixed Constructions – 02 – F

Patent

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Details

E02F 5/02 (2006.01) E02D 17/13 (2006.01) E21B 7/04 (2006.01) F16D 3/18 (2006.01)

Patent

CA 2222824

A trench wall cutter is provided with a drive mechanism which is attached to the cutting frame in a position which is spaced away from the bearing shield with a gear for driving at least one cutting wheel. A drive shaft is disposed between the drive mechanism and the drive pinion of the gear in the bearing shield. In order to reduce wear on the drive shaft bearing and gear wheel in the gear, an external spiral tooth system is formed on one end of the drive shaft which fits into a connecting sleeve with an internal tooth system. In the internal tooth system, the drive shaft with its external spiral tooth system is held rotationally fixed with the capacity to be deflected around the axis of the drive shaft. The connecting sleeve is also joined to drive mechanism or drive pinion of the gear.

Cette invention concerne une trancheuse dont le mécanisme d'entraînement est fixé à un bâti séparé du carter de palier par un engrenage servant à entraîner au moins un trépan. Un arbre d'entraînement est intercalé entre le mécanisme d'entraînement et le pignon menant de l'engrenage disposé dans le carter de palier. Afin de réduire l'usure du palier de l'arbre d'entraînement et de la roue dentée de l'engrenage, une des extrémités de l'arbre comporte une denture extérieure hélicoïdale en prise avec un manchon raccord à denture intérieure hélicoïdale. Les deux dentures conjuguées servent à rendre l'arbre et le manchon solidaires en rotation avec la possibilité de déport angulaire de l'un par rapport à l'autre. Le manchon raccord est également solidaire du mécanisme d'entraînement ou du pignon menant de l'engrenage.

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