Wear support assemblies for raise boring tools
AssigneeSandvik Mining and Construction Tools AB
InventorsAnders Lindblom, Joona Loikkanen
Life of this patent
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Abstract
A wear support assembly includes a wear pad arranged on top of a support plate, wherein the support plate has a lower surface for connecting to a raise boring tool and both the wear pad and the support plate have at least one hole for receiving a bolt to connect the wear pad to the support plate. Also, a raise boring tool for raise boring operations includes a reamer head having a body, a plurality of roller cutters connected to the body using a holder, a nose or drive stem connected the body, and at least one wear support assembly, wherein each support plate is connected directly to the raise boring tool and each wear pad is radially or perpendicularly bolted to each support plate.
Claims15
A wear support assembly associated with roller cutters of a raise boring tool, the wear support assembly comprising a wear pad arranged on top of a support plate, wherein the support plate has a lower surface for connecting to the raise boring tool, wherein the support plate includes a back end step for securing the wear pad to the support plate, the wear pad being rigidly held to the support plate and being arranged to provide support against forces applied from a forward drilling direction provided by the roller cutters, the backend step being positioned on an axially opposite side of the support plate as compared to the roller cutters, wherein the wear support assembly is arranged on a body of the tool between the roller cutters.
Dependencies are inferred from the claim text.