Boiler repair

Boiler tube panel removal apparatus comprising elongated guide rail structure for securing to a boiler tube panel adjacent a desired cut region, and a cutting tool assembly for mounting on said guide rail structure,

• said cutting tool assembly including a support carriage with spaced guide structure for engaging said guide rail structure, main pivot structure secured to said support carriage having a pivot axis extending transversely to said guide rail structure,
• a cutting tool mounted on said main pivot structure that includes a drive motor, a manual motor control, a drive shaft and a tube cutter disc mounted on said drive shaft at right angles to said main pivot axis,
• plunge cut link structure secured to said support carriage, said plunge cut link structure including a first link connected to said cutting tool and a second link connected between said first link and said secondary pivot axis for manually rotating said cutting tool about said main pivot axis in plunge cutting action through a panel of tubes adjacent said guide rail structure,
• manually releasable latch structure for latching said plunge cut link structure to hold said cutting tool in raised position, and
• stabilizing structure on said support carriage for storing said cutting tool assembly in upright position when not in use.

Apparatus for repairing a panel of boiler tubes comprising

• elongated guide rail structure for mounting on the panel of boiler tubes to be repaired,
• a cutting tool assembly including
• support carriage structure with spaced guide structure for engaging said guide rail structure,
• pivot structure secured to said carriage structure and defining a pivot axis,
• a cutting tool secured to said carriage structure for pivoting movement about the pivot axis defined by said pivot structure, said cutting tool including a drive motor, a manual motor control, a drive shaft, and a cutter disc mounted on said drive shaft and adapted to be driven in rotation by said drive motor in response to said manual motor control, and
• brake structure for engagement with said guide rail structure to lock said support carriage structure relative to said panel of boiler tubes during operation of said cutting tool.