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 2514459
The invention relates to a control valve, a percussion device and a method of controlling a working cycle of a percussion device. The percussion device (1) used for breaking rock comprises an impact element (8), which is controlled by a control valve (2). The control valve comprises a control element (5), which is arranged to control channels (7b) leading to a working pressure surface (9) of the impact element (8). The movement of the control element to its extreme position is arranged to form a closed pressure space, where pressure medium compresses and converts kinetic energy of the control element into pressure energy. The pressure energy is re-converted into kinetic energy and utilized when the control element changes its direction.
L'invention concerne une vanne de commande, un dispositif de percussion et un procédé de commande d'un cycle de fonctionnement du dispositif de percussion. Celui-ci (1) utilisé pour rompre la roche comprend un élément d'impact (8) commandé par une vanne de commande (2). Celle-ci comprend un élément de commande (5) disposé de manière à commander des canaux menant à une surface de travail de pression (9) de l'élément d'impact (8). Le déplacement de l'élément de commande dans sa position extrême est conçu de manière à former un espace de pression fermé, le support de pression comprimant et convertissant l'énergie cinétique de l'élément de commande en énergie de pression. Celle-ci est reconvertie en énergie cinétique et utilisée quand l'élément de commande change de sens.
Ahola Erkki
Keskiniva Markku
Koskimaki Antti
Maki Jorma
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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