Subsea processing machine comprising a tool holder with a change hub for receiving rotary tools
AssigneeSchöNing GmbH
InventorsHans-Erich Maul, Tim Begiebing
Life of this patent
Estimating the term…
Abstract
In order to mill, drill, saw or the like in the offshore sector, subsea processing machines are used which comprise a tool holder with a change hub for receiving at least one rotary tool, such as for instance a milling cutter, saw, drill or the like. The tool holder preferably has a carrier body for receiving the tool hub, wherein the latter comprises a hub flange for receiving tools. The preferably centric hub ring of the change hub can be arranged on the carrier body of the tool holder and can be connected to the tool holder in such a manner as to be able to be detached and clamped by means of at least one locking apparatus.
Claims15
A subsea processing machine comprising:
- a tool holder;
- and
- a change hub for receiving at least one rotary tool,
- wherein the tool holder has a cylindrical carrier body for receiving the change hub,
- the change hub includes:
- a hub flange and a hub ring,
- wherein the change hub is configured for receiving the tool holder, wherein the hub ring protrudes centrically from the hub flange, and wherein the centric hub ring is arranged on the carrier body so as to be able to be detached from the carrier body and so as to be able to be locked to the carrier body via at least one locking apparatus,
- characterized in that
- the at least one locking apparatus includes an unlocking piston and a blocking bolt, the unlocking piston is received in a chamber that is in the tool holder, the chamber is configured to be pressurized, the blocking bolt is oriented with the unlocking piston such that a longitudinal axis of the blocking bolt and a longitudinal axis of the unlocking piston are in parallel with an axis of rotation of the carrier body, and the blocking bolt is received in the hub ring, the blocking bolt can be pretensioned at one longitudinal end that is distal from the tool holder via a spring element, a locking bolt is disposed at a second longitudinal end of the blocking bolt that is proximal the tool holder, which wherein when the locking bolt is in a locking position, the locking bolt engages into a locking formation on the carrier body and cooperates with a cam that is located at an end of the blocking bolt,
- wherein when the unlocking piston is moved outwards in a direction towards the change hub as a result of pressurization in the chamber, the unlocking piston presses the blocking bolt into the hub ring and the locking bolt is disengaged via the cam from the locking formation such that the change hub can be detached from the tool holder.
Dependencies are inferred from the claim text.