B - Operations – Transporting – 25 – D
Patent
B - Operations, Transporting
25
D
B25D 9/16 (2006.01) B25D 9/18 (2006.01) B25D 9/20 (2006.01)
Patent
CA 2515427
The invention relates to a control valve, a percussion device and a method of controlling a working cycle of a percussion device. A percussion device (1) for breaking rock includes an impact element (8) controlled by a control valve (2). The control valve includes a control element (5) arranged to control channels (7b) leading to a working pressure surface (9) of the impact element (8). The control element, during a working cycle of the control valve, is arranged to open and close pressure channels at several connecting moments so that during one working cycle of the valve, several impact pulses are arranged to be produced.
L'invention concerne une soupape de commande, un dispositif de percussion et un procédé de commande d'un cycle de travail d'un dispositif de percussion. Un dispositif de percussion (1) conçu pour casser la roche comporte un élément d'impact (8) commandé par une soupape de commande (2). Cette dernière comporte un élément de commande (5) destiné à commander les canaux (7b) conduisant à une surface de pression de fonctionnement (9) de l'élément d'impact (8), lequel, lors d'un cycle de travail de la soupape de commande, est destiné à ouvrir et fermer les canaux de pression à plusieurs moments de connexion de sorte que, pendant un cycle de travail de la soupape, plusieurs impulsions d'impact sont disposées pour être produites.
Ahola Erkki
Esko Mauri
Helin Aimo
Keskiniva Markku
Koskimaeki Antti
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Sandvik Mining And Construction Oy
Sandvik Tamrock Oy
LandOfFree
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