Escariador para pasos subterraneos que comprende una carcasa de soporte que tiene una pluralidad de parejas integrales de aletas de soporte que se extienden lateralmente espaciadas aparte en la que entre cada pareja de aletas existe una ranura que se extiende longitudinalmente para recibir una aleta de corte, y un anillo de estabilizacion que comprende un manguito circular soportado por una pluralidad de pilares de soporte radiales que se extienden desde un collar central

摘要

A reamer for underground passageways made, for instance, for the installation of cables or pipelines to distribute services in a reticulated network. It includes a support housing having plural integral pairs of spaced-apart laterally extending support wings, wherein between each pair of support wing there is a longitudinally extending slot to receive a laterally extending cutting wing such that each cutting wing is captured between a respective pair of support wings. A stabilization ring comprising a circular sleeve supported by plural radial support pillars which extend from a central collar. Wherein, the cutting wings engage with the support housing to resist rearward longitudinal movement, with the support wings to resist torsional forces, and with the circular sleeve of the stabilization ring to resist radial movement.