Valve arrangement in a hydraulic percussive rock drill

Details Valve arrangement in a hydraulic percussive rock drill Valve arrangement in a hydraulic percussive rock drill

B - Operations, Transporting

25

D

B25D 9/14 (2006.01)

Patent

CA 2202521

The invention provides a valve arrangement for use in a hydraulic percussive rock drill (10) wherein a piston (18), located in a cylinder (12, 14), is caused to reciprocate by hydraulic fluid flow, the valve arrangement including a valve (24) controlling the said hydraulic fluid flow, the valve being positioned between opposing first and second surfaces (26A, 32A) of two walls (26, 32) in which are formed at least first and second ports (28, 34) respectively, the valve having at least a third port (38) which is movable into register, and out of register, with the first and second ports, and having first and second hydraulic fluid sealing surfaces (24A, 24B) which respectively engage with the said first and second surfaces (26A, 32A) at least when the third port (38) is out of register with the first and second ports (28, 34); and a hydraulic rock drill (10) having an above-mentioned valve arrangement.

Un agencement de soupape est utilisé dans un marteau-foreur hydraulique (10) pour roches ayant un piston (18) animé par un fluide hydraulique d'un mouvement alternatif dans un cylindre (12, 14). L'agencement de soupape comprend une soupape (24) de commande dudit courant de fluide hydraulique positionnée entre des première et deuxième surfaces opposées (26A, 32A) de deux parois (26, 32) dans lesquelles sont ménagées respectivement des première et deuxième ouvertures (28, 34). La soupape comprend au moins une troisième ouverture (38) mobile de façon à coïncider ou non avec les première et deuxième ouvertures, et des première et deuxième surfaces (24A, 24B) d'obturation du fluide hydraulique qui viennent respectivement en contact avec les première et deuxième surfaces (26A, 32A) au moins lorsque la troisième ouverture (38) ne coïncide pas avec les première et deuxième ouvertures (28, 34). L'invention concerne également un marteau-foreur hydraulique (10) pour roches pourvu de cet agencement de soupape.

Affiliated with

Also associated with

Rating

Valve arrangement in a hydraulic percussive rock drill does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Valve arrangement in a hydraulic percussive rock drill, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Valve arrangement in a hydraulic percussive rock drill will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-2028528