Abstract: A method for mutually positioning tubes. End faces, which includes a generally annular and generally circular end surface near an inner surface of the tube and a beveled edge surface connecting the end surface to an outer surface of the tube, are provided on first and second tubes, respectively. Plural clamping cylinders are engaged with the first and second tubes, respectively. Each cylinder is radially arranged onto and evenly distributed around respective tubes. The first and second tubes are pre-positioned relative to each other such that their respective end faces are opposite each other. At least one radial offset is assessed between the respective end surfaces of the first and second tubes. The clamping cylinders of the first and/or second tube are moved relative to each other in accordance with the assessed radial offset based on an optimization of areas in which their respective end surfaces coincide.

Abstract: A welding device for weld-assembly of first and second parts, defining therebetween a sealing surface, along a weld joint. The device includes: a supporting mechanism configured to move the device along the weld joint; at least one welding mechanism; and an automatic command and control mechanism. The welding mechanism is mounted on a single supporting element oriented substantially parallel to the sealing surface. A first motorized actuator secured to the supporting mechanism includes a first projection cooperating with an open housing in a first end face of the supporting element, and a second motorized actuator secured to the supporting mechanism includes a second projection cooperating with an open housing in a second end face of the supporting element. The first and second projections are movable in a plane substantially perpendicular to the sealing surface and generate controlled movement of the supporting element of the welding mechanism.

Abstract: A device for centering and internal clamping of tubular parts such as metal conduits, placed end-to-end so as to be welded to form metal pipelines is provided.

Abstract: Clamp for mechanical parts such as tubes or pipes, comprising a flange (5) with parts (13A, 13B, 13C) connected to one another so as to be pivotable as far as a closed position in which they are continuous. A locking device may be actuated when the flange is closed. The clamp further comprises supports (55; 57) by which rails (49) are connected to the parts with limited freedom of relative movement. The adjacent end faces of the rails have mating surfaces forming a connection by positive locking, which is active in the vicinity of the closed position. Each connection guides the end faces relative to one another into a working position in which the rails (49) form a guide path for tools, and helps to maintain this position when the clamping device is actuated.

Abstract: A device for aiding working of large mechanical parts includes a first flange and a second flange for holding in position a first part and second part. Each flange includes a support and actuators that can be controlled individually and each includes a mobile portion. The actuators are mounted on their respective supports such that their mobile portions are displaceable substantially in a same plane to project from the supports. The actuators of the second flange are mounted on the second support in an equivalent manner to the actuators of the first flange. The first flange and the second flange are connected to one another with possibility of relative displacement under action of additional actuators. The displacement includes a component of translation substantially perpendicular to the same planes of the mobile portions of the actuators.

Abstract: To abut hollow profiled parts, at least two frames includes actuators distributed in an equivalent manner to one another. Each actuator includes a portion which can be displaced in a plane common to the other actuators of the frame so as to project from the frame; the frames are each positioned in an end region of a respective part. The equivalent actuators are mutually opposed; the mobile portions of the actuators of one frame and of the actuators of the other frame are displaced into respective working positions, in which they exert forces on the wall of their respective part so that the end regions of these parts match one another; the parts are fixed to one another in their respective end regions.

Abstract: The present invention provides a method of positioning a first pipe facing a second pipe, the end of the first pipe being provided with a first chamfer and a first substantially annular surface placed close to its inside surface, the end of the second pipe being provided with a second chamfer and with a second substantially annular surface located close to its inside surface, said first and second annular surfaces defining a joint plane substantially perpendicular to the longitudinal axes of each of said pipes. According to the invention, a plurality of clamping actuators regularly distributed around the first and second pipes are used and controlled to shift the second pipe relative to the first pipe parallel to said joint plane as a function of a radial offset H, H? between the first and second annular surfaces so as to guarantee a maximum facing area, referred to as a “coincidence” area for said annular surfaces.

Abstract: A device for centering and clamping tubular parts such as conduits designed to form pipeline pipes of the type consisting of an elongated cylinder comprising in particular a clamping device, such as at least clamping shoes arranged over its entire periphery and adapted to be radially mobile projecting from said cylinder to be urged to press against the walls of the conduits to be clamped as well as means for moving each of the series of clamping shoes between a position projecting from the cylinder and a position wherein they are retracted into the cylinder

Abstract: A method for mutually positioning tubes. End faces, which includes a generally annular and generally circular end surface near an inner surface of the tube and a beveled edge surface connecting the end surface to an outer surface of the tube, are provided on first and second tubes, respectively. Plural clamping cylinders are engaged with the first and second tubes, respectively. Each cylinder is radially arranged onto and evenly distributed around respective tubes. The first and second tubes are pre-positioned relative to each other such that their respective end faces are opposite each other. At least one radial offset is assessed between the respective end surfaces of the first and second tubes. The clamping cylinders of the first and/or second tube are moved relative to each other in accordance with the assessed radial offset based on an optimization of areas in which their respective end surfaces coincide.

Abstract: The invention relates to a device providing assistance in the working of pipes, including: a plate (5) having an internal cavity and comprising parts (13A, 13B, 13C) assembled together such that they can pivot to occupy a closed position in which they are joined to form a ring; and a plate locking device. The adjacent ends of two plates (13A, 13B, 13C) include corresponding surfaces that are shaped to cooperate and establish a connection as the plate (5) moves into the closed position. Each connection comprises two complementary surfaces (37) that come into contact with one another in the closed plate position. The locking device comprises at least one catch which can be actuated in said position and which acts on the adjacent ends of the plates (13A, 13B, 13C) in order to clamp the complementary contact surface against one another.

Abstract: A welding device for weld-assembly of first and second parts, defining therebetween a sealing surface, along a weld joint. The device includes: a supporting mechanism configured to move the device along the weld joint; at least one welding mechanism; and an automatic command and control mechanism. The welding mechanism is mounted on a single supporting element oriented substantially parallel to the sealing surface. A first motorized actuator secured to the supporting mechanism includes a first projection cooperating with an open housing in a first end face of the supporting element, and a second motorized actuator secured to the supporting mechanism includes a second projection cooperating with an open housing in a second end face of the supporting element. The first and second projections are movable in a plane substantially perpendicular to the sealing surface and generate controlled movement of the supporting element of the welding mechanism.

Abstract: A device providing assistance in working of mechanical components, such as pipes, including a flange including parts assembled together such that they can pivot to occupy a closed position in which they are joined to one another. A clamping device can be actuated when the flange is closed. The flange also includes supporting elements used to connect rails to the parts with limited relative movement therebetween. Adjacent end faces of the rails include corresponding surfaces that are shaped to co-operate and establish a connection as the flange moves into the closed position. Each connection: guides the end faces in relation to one another and into a working position in which the rails form a guide track for the tools, and assists in maintaining the position when the clamping device is actuated.

Abstract: This invention relates to a method for axial positioning of a first pipe with respect to a second pipe for the welding of said pipes at their ends thereof of which the faces have been previously machined and define a joint plane, according to which a plurality of jacks are distributed around the first and second pipes, and said jacks are connected to a central processing and control unit. According to the invention, the movement of each of the jacks is controlled with respect to said external surface of the first and/or second pipe so as to align and center the internal end surfaces of the first and second pipes. The invention also relates to an associated device.

Abstract: The present invention provides a method of positioning a first pipe facing a second pipe, the end of the first pipe being provided with a first chamfer and a first substantially annular surface placed close to its inside surface, the end of the second pipe being provided with a second chamfer and with a second substantially annular surface located close to its inside surface, said first and second annular surfaces defining a joint plane substantially perpendicular to the longitudinal axes of each of said pipes. According to the invention, a plurality of clamping actuators regularly distributed around the first and second pipes are used and controlled to shift the second pipe relative to the first pipe parallel to said joint plane as a function of a radial offset H, H? between the first and second annular surfaces so as to guarantee a maximum facing area, referred to as a “coincidence” area for said annular surfaces.

Abstract: This invention relates to a method for axial positioning of a first pipe with respect to a second pipe for the welding of said pipes at their ends thereof of which the faces have been previously machined and define a joint plane, according to which a plurality of jacks are distributed around the first and second pipes, and said jacks are connected to a central processing and control unit. According to the invention, the movement of each of the jacks is controlled with respect to said external surface of the first and/or second pipe so as to align and center the internal end surfaces of the first and second pipes. The invention also relates to an associated device.

Abstract: Device for working tubes, comprising a flange (5) recessed on the inside, with plates (13A, 13B, 13C) joined together so as to be pivotable, up to a closed position in which these plates are joined to form a crown, and a locking device for the flange. The adjacent ends of two plates have mating surfaces forming a connection by positive locking, this connection being active in the vicinity of the closed position of the flange (5). Each positively locking connection comprises two complementary surfaces (37) coming into mutual contact in the closed position of the flange. The locking device comprises at least one latch that can be actuated in this position, which acts on the adjacent ends of the plates to clamp their complementary contact surfaces against one another.

Abstract: Clamp for mechanical parts such as tubes or pipes, comprising a flange (5) with parts (13A, 13B, 13C) connected to one another so as to be pivotable as far as a closed position in which they are continuous. A locking device may be actuated when the flange is closed. The clamp further comprises supports (55; 57) by which rails (49) are connected to the parts with limited freedom of relative movement. The adjacent end faces of the rails have mating surfaces forming a connection by positive locking, which is active in the vicinity of the closed position. Each connection guides the end faces relative to one another into a working position in which the rails (49) form a guide path for tools, and helps to maintain this position when the clamping device is actuated.

Abstract: The present invention relates to a welding device suitable for joining by welding a first and a second part at a weld joint, said parts defining a joint face between said parts, the device comprising: a traveling support mean (2) for moving the device along the weld joint; at least one welding means (4) cooperating with said traveling support means (2) so as to be kept at a distance from said weld joint; means for automatic motion control of the traveling support mean (2) in particular.

Abstract: The invention concerns a device for centering and clamping tubular parts such as conduits designed to form pipeline pipes of the type consisting of an elongated cylinder (1) comprising in particular clamping means, such as at least clamping shoes (2) arranged over its entire periphery and adapted to be radially mobile projecting from said cylinder (1) to be urged to press against the walls of the conduits to be clamped as well as means for moving each of the series of clamping shoes (2) between a position projecting from the cylinder (1) and a position wherein they are retracted into the cylinder (1).

Abstract: A device for centring and internal clamping of tubular parts such as metal conduits, placed end-to-end so as to be welded to form metal pipelines is provided.