Heading machine

E - Fixed Constructions – 21 – C

Patent

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Details

E21C 27/24 (2006.01) E21D 20/00 (2006.01)

Patent

CA 2705842

In a heading machine (1) including a machine frame equipped with a travelling mechanism (2), a cutting boom (3) carrying cutting tools (5,8,10), and a hauling means (19) extending in the longitudinal direction of the machine beyond the rear end of the machine frame, the cutting tools (5,8,10) are formed by at least two rotating cutting heads (5) having axes of rotation (6) extending in the heading direction or enclosing acute angles with the heading direction, and a unit (21) capable of being trailed behind the machine frame and having a passage cross-section (33) for the hauling means (19) is hingedly connected to the machine frame by the aid of hydraulic piston cylinder units (29,30), which unit comprises at least one anchor boring and setting device (23), and at least one supporting device (24) which is braceable against the roof (7) and the floor (9), each on both sides of the hauling means (19).

L'invention concerne un tunnelier (1) présentant un bâti pourvu d'un mécanisme de roulement (2), un bras de coupe (3), portant des outils de coupe (5, 8, 10), ainsi qu'un moyen d'extraction (19), s'étendant dans le sens longitudinal de la machine et faisant saillie de l'extrémité arrière du bâti, lesdits outils de coupe (5, 8, 10) étant formés par au moins deux têtes de coupe rotatives (5), dont les axes de rotation (6) s'étendent dans le sens de creusement ou forment un angle aigu avec le sens de creusement. Selon l'invention, une unité (21), pourvue d'une section de passage (33) pour le moyen d'extraction (19) et pouvant être tirée derrière le bâti, est articulée sur le bâti au moyen d'ensembles cylindre/piston hydrauliques (29, 30), laquelle unité présente, des deux côtés du moyen d'extraction (19), au moins un dispositif de forage et de pose de boulons d'ancrage (23) et au moins un dispositif d'étançonnage (24), pouvant être bloqué contre la couronne (7) et la sole (9).

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