Method and device for breaking a hard compact material
AssigneeAtlas Copco AB
InventorErik V. Lavon
Life of this patent
Estimating the term…
Abstract
A hard compact material, such as rock, is broken by forcing an elongated mass body of relatively incompressible fluid, such as water, against the material to be broken. The mass body is caused to impact the material at a momentum necessary for breaking the material. The momentum is generated by supplying the fluid to a storage chamber against the effect of a thrust load acting upon the fluid in the storage chamber. When a sufficient amount of fluid has been supplied the fluid in the storage chamber is forced toward the material to be broken by the effect of the thrust load.
Claims39
A method of breaking hard compact material, such as rock by means of relatively incompressible fluid, such as water, which as an elongated fluid mass body (11) is directed toward the material to be broken, comprising:
- storing a mass of said fluid in a storage chamber (18),
- exerting a substantially continuous thrust load upon the fluid in said storage chamber (18),
- successively supplying said fluid to said storage chamber (18) against the effect of said thrust load,
- providing a barrel (19) coupled to said storage chamber for forming fluid received from said storage chamber into an elongated coherent mass body (11) and for directing the fluid mass body (11) toward the material to be broken, and
- suddenly opening a passage between said storage chamber and said barrel, responsive to a predetermined amount of the fluid being supplied to said storage chamber (18), to permit said fluid in said storage chamber (18) to be expelled through said barrel as said elongate mass body and toward the material to be broken by the effect of said thrust load exerted on said fluid, the maximum pressure in said storage chamber during said expelling of fluid from said storage chamber being substantially the same as the maximum pressure during the supplying of fluid to said storage chamber.
A device for breaking a hard compact material, such as rock, wherein the material is broken by means of relatively incompressible fluid, such as water, which as an elongated fluid mass body (11) is directed toward the material to be broken, comprising:
- a storage chamber (18) for storing the fluid,
- means (15,16) operatively associated with said storage chamber (18) for substantially continuously exerting a thrust load upon the fluid in said storage chamber (18),
- means for successive supply of said fluid to said storage chamber (18) against the effect of said thrust load,
- a barrel (19) coupled to said storage chamber (18) for forming fluid received from said storage chamber into an elongated coherent mass body (11) and for directing the fluid mass body (11) toward the material to be broken, and
- valve means (22,28;
- 43,45) coupled between said storage chamber and said barrel, and means for causing said valve means to suddenly open a passage between said storage chamber and said barrel, to permit the fluid from said storage chamber to be expelled through said barrel as said elongate mass body, the maximum pressure in said storage chamber during said expelling of fluid from said storage chamber being substantially the same as the maximum pressure during the supplying of fluid to said storage chamber.
A device according to claim, 6 wherein said barel (19) is movable relative to the storage chamber in the driving direction of the fluid mass body.
A device for breaking a hard compact material, such as rock, wherein the material is broken by means of relatively incompressible fluid, such as water, which as an elongated fluid mass body (11) is directed toward the material to be broken, comprising:
- a storage chamber (18) for storing the fluid,
- means including a drive piston (15) operatively associated with said storage chamber (18) for exerting a thrust load upon the fluid in said storage chamber (18), said drive piston (15) acting upon the fluid in said storage chamber (18),
- means for successive supply of said fluid to said storage chamber (18) against the effect of said thrust load,
- a barrel (19) coupled to said storage chamber (18) for forming fluid received from said storage chamber into an elongated coherent mass body (11) and for directing the fluid mass body (11) toward the material to be broken, and
- means responsive to a predetermined amount of the fluid being supplied to said storage chamber (18) to permit said fluid in said storage chamber (18) to be forced into said barrel (19) and toward the material to be broken by the effect of said thrust load exerted on said fluid and
- said means responsive to a predetermined amount of fluid being supplied to said storage chamber including adjustable valve means (22,28;
- 43,45) for controlling the admission of fluid into said barrel (19) from said storage chamber (18), said valve means being controlled by means of said drive piston (15).
A method of breaking hard compact material such as rock, by means of relatively incompressible fluid, such as water, comprising:
- causing an elongated mass body (11) of the fluid to impact the material to be broken at such momentum that the material is broken,
- supplying fluid to a storage chamber (18) which has a movable rear partition wall (15) upon which acts a thrust load,
- maintaining a passage between said storage chamber and a barrel means (19) closed during the fluid supply, said barrel means being adapted to direct the fluid toward the material, and
- opening said passage by means of said movable rear partition wall (15) in a predetermined rear position thereof upon the supply of a predetermined amount of fluid to said storage chamber, thereby generating the momentum in a substantially non-impact manner which is required for breakage.
A method of breaking hard compact material, such as rock, by means of relatively incompressible fluid, such as water, comprising:
- causing an elongated mass body (11) of the fluid to impact the material to be broken at such momentum that the material is broken,
- generating the momentum which is required for breakage by first successively supplying fluid to a storage chamber (18) against the effect of a thrust load acting upon the fluid in the storage chamber, and when a sufficient amount of fluid has been admitted into the storage chamber, controlling, by the fluid supply to the storage chamber (18), a valve means (22, 28;
- 43, 45) which controls the admission of fluid from the storage chamber (18) into a barrel means (19) which directs the fluid toward the material, thereby forcing in a non-impact manner the fluid in the storage chamber toward the material to be broken by the effect of said thrust load,
- said barrel means comprising a tubular slide valve, the rearward end of which comprises said valve means, said valve means being controlled by moving said barrel means forwards in the direction of acceleration of the fluid under the influence of the fluid in the storage chamber.
A device for breaking a hard compact material, such as rock, wherein the material is broken by means of relatively incompressible fluid, such as water, which is an elongated fluid mass body (11) is directed toward the material to be broken, comprising:
- a storage chamber (18) for storing the fluid,
- means (15,16) operatively associated with said storage chamber (18) for exerting a thrust load upon the fluid in said storage chamber (18),
- means for successive supply of said fluid to said storage chamber (18) against the effect of said thrust load,
- a barrel (19) slideably coupled to said storage chamber (18) for forming fluid received from said storage chamber into an elongated coherent mass body (11) and for directing the fluid mass body (11) toward the material to be broken, said barrel (19) comprising a tubular slide valve, and
- means responsive to a predetermined amount of the fluid being supplied to said storage chamber (18) to permit said fluid in said storage chamber (18) to be forced into said slideable barrel (19) and toward the material to be broken by the effect of said thrust load exerted on said fluid,
- said means responsive to a predetermined amount of fluid being supplied to said storage chamber including means coupled to and cooperating with said tubular slide valve of said barrel for controlling the admission of fluid into said barrel (19) from said storage chamber (18).
A device for breaking a hard compact material, such as rock, wherein the material is broken by means of relatively incompressible fluid, such as water, which as an elongated fluid mass body (11) is directed toward the material to be broken, comprising:
- a storage chamber (18) for storing the fluid,
- a drive piston (15) slideably mounted in said storage chamber,
- means (16) operatively associated with said drive piston (15) and storage chamber (18) for exerting a thrust load upon the fluid in said storage chamber (18) via said drive piston (15),
- means for successive supply of said fluid to said storage chamber (18) against the effect of said thrust load,
- a barrel (19) slideably coupled to said storage chamber (18) for forming fluid received from said storage chamber into an elongated coherent mass body (11) and for directing the fluid mass body (11) toward the material to be broken, and
- means responsive to a predetermined amount of the fluid being supplied to said storage chamber (18) to permit said fluid in said storage chamber (18) to be forced into said barrel (19) and toward the material to be broken by the effect of said thrust load exerted on said fluid,
- said means responsive to a predetermined amount of fluid being supplied to said storage chamber including valve means (22,28;
- 43,45) on said barrel (19) for controlling the admission of fluid into said barrel (19) from said storage chamber (18),
- said drive piston (15) and barrel (19) being adapted to be moved together in a backward direction opposite to the working direction of said drive piston (15) during the supply of fluid to said storage chamber (18), and said drive piston (15) being provided with sealing means (26) for fluid-tight cooperation with said valve means on said barrel (19) during said simultaneous backward movement of said drive piston (15) and said barrel (19).
Dependencies are inferred from the claim text.