Patent EA-000158-B1 (EA)
Title: Apparatus for working on a tube portion using a laser beam, and use thereof on pipe tubes on a marine pipe-laying or pipe recovery barge
Inventor: GAINAND YVES
IPC: B23K26/10
Filed: 1996-06-06
Abstract: 1. Apparatus for working on a tube portion using a laser beam, directed towards said section and having a laser device comprising a laser beam generator (L), working head (T), comprising a means (21) of focusing said laser beam and an outlet tip for focused laser beam, a wave guide (G) for transmitting said laser beam from said generator to said working head and turnable, and a rotatably supporting the holder (S), for moving of said working head around certain axis (x), and a frame (B), on which said laser beam generator (L) and said wave guide are arranged, characterized in that said rotatably supporting the holder (S), for said working head (T) is placed on said frame and also in that said apparatus is housed in a container (C), which also comprising blocks (9, 10) of control and high frequency of laser beam generator and which has special openings (4, 4') for pipe passing, and means (5, 5') for temporary attaching to a tube so that the weight of the container itself, including the equipment therein, damps or weakens mechanical effects from pipe to said working head and wave guide. 2. Apparatus according to Claim 1 wherein said container is attached to a tube using special damping means. 3. Apparatus according to Claim 1 or 2 wherein it comprises means (6, 6') for regulating the level or height of said frame in the container depending upon a tube diameter. 4. Apparatus according to one of preceding Claims wherein it comprises means (7, 7') for longitudinal movement of said frame in the container to regulate its position during the working process. 5. Apparatus according to one of preceding Claims wherein said container has a certain zone (Z) of air conditioning, in which said blocks (9, 10) of control and high frequency of laser beam generator are placed on special flooring. 6. Apparatus according to one of preceding Claims wherein said working head (T) comprises a frame (19), fastened from one side on said rotatably supporting holder (S), and on the other side is fastened to the end of said wave guide (G), and movable system (E) mounted optionally for reciprocating motion along said frame and comprising means (21) of laser beam focusing coming from said wave guide, and outlet tip (22) of this laser beam, wherein axis (x') of reciprocating motion is an axis of the laser beam falling on the means of focusing, and is parallel to axis (x) of rotatably supporting holder (S), wherein an electrical motor (24) is additionally mounted on said frame to provide reciprocating motion of said movable system (E) when corresponding control commands are sent. 7. Apparatus according to one of preceding Claims wherein said working head (T) comprises a feeder (27), for supplying an admixture to be used during welding operations. 8. Apparatus according to Claims 6 and 7 wherein said feeder (27) for supply of said admixture is mounted on said movable system (E). 9. Use of said apparatus according to one of preceding Claims for welding or cutting on pipe tubes on a marine pipe laying or pipe recovery barge.