Percussion hydraulic apparatus

Details Percussion hydraulic apparatus Percussion hydraulic apparatus

B - Operations, Transporting

25

D

B25D 9/20 (2006.01)

Patent

CA 2415359

The invention concerns an apparatus comprising a body (1) containing a cylinder wherein is mounted sliding an impact piston (1) of a tool, the motion of the piston being controlled by a distributor (15) which, arranged coaxial to the impact piston, is mounted inside a distribution box (3). The distribution box (3) comprises a part axially overlapping the piston (1) and arranged concentric thereto, and the distribution box (3) defines with the piston a control chamber (13) which, successively put under the high (9) and the low (12) pressure of the fluid, communicates through a passage (16) arranged in the distribution box (3) with a chamber controlling (14) the movement of the distributor (15), to generate alternately low pressure and high pressure.

Appareil comprenant un corps (2) contenant un cylindre à l'intérieur duquel est monté coulissant un piston de frappe (1) d'un outil, le mouvement du piston étant commandé par un distributeur (15) qui, disposé coaxialement au piston de frappe, est monté à l'intérieur d'une boîte de distribution (3).La boîte de distribution (3) comprend une partie chevauchant axialement le piston (1) et disposée concentriquement à celui-ci, et la boîte de distribution (3) délimite avec le piston une chambre de pilotage (13) qui, mise successivement à la haute (9) et à la basse pression (12) du fluide, est en communication par un canal (16) ménagé dans la boîte de distribution (3) avec une chambre de commande (14) du mouvement du distributeur (15), pour créer dans celle-ci alternativement une basse pression et une haute pression.

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