EP0243943B1 - Automatisches Gerät zum Festziehen oder Lösen von Schraubbolzen einer Flanschverbindung zwischen zwei Rohrleitungen - Google Patents

Automatisches Gerät zum Festziehen oder Lösen von Schraubbolzen einer Flanschverbindung zwischen zwei Rohrleitungen Download PDF

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Publication number
EP0243943B1
EP0243943B1 EP19870106176 EP87106176A EP0243943B1 EP 0243943 B1 EP0243943 B1 EP 0243943B1 EP 19870106176 EP19870106176 EP 19870106176 EP 87106176 A EP87106176 A EP 87106176A EP 0243943 B1 EP0243943 B1 EP 0243943B1
Authority
EP
European Patent Office
Prior art keywords
axis
tubes
tool
rail
wheels
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19870106176
Other languages
English (en)
French (fr)
Other versions
EP0243943A1 (de
Inventor
Leo Van Loon
Rémy Pilliard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
European Atomic Energy Community Euratom
Original Assignee
European Atomic Energy Community Euratom
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by European Atomic Energy Community Euratom filed Critical European Atomic Energy Community Euratom
Publication of EP0243943A1 publication Critical patent/EP0243943A1/de
Application granted granted Critical
Publication of EP0243943B1 publication Critical patent/EP0243943B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/16—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same abutted flanges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/002—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose for special purposes
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F7/00—Shielded cells or rooms
    • G21F7/06—Structural combination with remotely-controlled apparatus, e.g. with manipulators
    • G21F7/066—Remotely manipulated tools

Definitions

  • the invention relates to an automatic tool for tightening and loosening a screw or nut belonging to a flanged connection between two pipes, comprising a wrench which can be placed on the head of the screw or nut and which is rotated by a motor.
  • connection between two flanges requires the tightening of a certain number of bolts, which are distributed regularly around the axis of the pipes and pass through two flanges which constitute the ends of these pipes.
  • tightening of the connection flange bolts can no longer be done manually, but on the contrary requires the use of an automatic tool.
  • such tools required the continuous assistance of a remote manipulator, which brings the tool closer to the flange, guides the tool key to the nut to be tightened, monitors the tightening operation, then releases the nut wrench to be able to engage it on the next nut of the same flange connection and so on.
  • the invention aims to provide an automatic tool as defined above, which no longer requires assistance by the manipulator once it is placed on a pipe, and which can be used even when the pipes are hardly accessible.
  • the tool shown in the four figures is used to tighten nuts 1, which pass through two flanges 1 and 3, these flanges constituting the ends of two pipes 4 and 5, whose axes 6 are aligned.
  • the tool is specially designed for the diameter of the pipes 4 and 5 and the diameter on which the axes 7 of the connection bolts 26 are located, which are integral with the lower flange.
  • the only adaptation to this tool is constituted by a guide rail 8, which is fixed on the external surface of one of the pipes and which cooperates with three guide wheels 9 to 11, which is provided with the tool.
  • the tool In fig. 1, the tool is shown in the retracted position relative to the flanges 2 and 3, but fixed in a self-supporting manner to the pipe 4 through the rail 8 and the wheels 9 to 11.
  • two namely the wheels 9 and 10 are carried by a common frame 24, which is mounted through a hinge pin 12 on a support structure 13 of a generally semiannular shape.
  • the third wheel 11 is supported by the support structure 13 and it can be driven by a motor 14, so that the semi-annual support structure can rotate around the axis 6.
  • axes of the three wheels 9, 10, 11 act as a pneumatic slide for the support structure 13 so that the latter can be lowered or mounted in the direction of the axis 6 of the pipes, when applying pressurized air to cylinders 15 and 20, in which pistons such as 16 slide integral with the axis of the corresponding wheel.
  • Fig. 1 shows the upper position of this support structure, position in which the nuts 1 are not reached by the tool.
  • the key 17 proper is visible in FIG. 4. It consists of a tube with an internal hexagonal section adapted to the shape of the nut 1.
  • a rod 25 for storing nuts extends along an axis 18. It receives loose nuts or it provides nuts which must be tightened on a bolt 26. The nuts are retained on this rod using balls such as 27, which protrude slightly and elastically from radial housings in this rod and which are supported by springs.
  • a reversible pneumatic motor 19 is coupled to this key to rotate it in the tightening or loosening direction.
  • the tool comprises a lever 21, which is articulated around the axis 18. By its free end, the lever 21 is coupled to a piston 22, which bears against the support structure 13. This lever encloses the key and it is coupled to the latter by a reversible ratchet and ratchet system 23. In FIG. 3, we only see the ratchets in one direction of rotation, the other ratchets being hidden behind the lever.
  • a remote manipulator is used to engage the tool on the pipe concerned. It suffices to present the open face of the semiannular structure for supporting the pipe, the chassis 24 being retracted so that the wheel 10 does not hinder the passage of the pipe 4.
  • the wheel 9 on the other hand is now in the cylindrical space that must later occupy the pipe. If the manipulator brings the tool closer to this pipe, the latter finally pushes the wheel 9 backwards and the articulation of the chassis 24 around the axis 12 causes the wheel 10 to return to the position shown in FIG. 2, where the three wheels 9, 10 and 11 are approximately equidistant and are applied against the rail 8 of the pipe 4.
  • the tool is kept in this position by means of two pneumatic pistons, which apply external forces, and the remote manipulator is released so that other tools can be placed on other pipes while the tool referred to here is working.
  • programmed control means For loosening the nuts 1 of a flange connection, programmed control means, not shown, first start the motor 14, which drives the wheel 11 and rotates the tool around the pipe 4. Microcontacts not shown detect the position of the nut 1 and stop the engine 14, as soon as the axis 7 of a nut coincides with the axis 18 of the key. The support structure 13 is then in position to be lowered on the flange 2.
  • the programmed command restarts the cycle by turning the tool in order to align the key 17 with another nut and so on.
  • the manipulator is called again to release the tool from the pipe and to apply it if necessary on another pipe.
  • the tool's function is similar. Only the direction of rotation of the motor 19 is reversed and the pawls 23 are positioned accordingly. Beforehand, the storage rod 25 is loaded with nuts, which then unload automatically by providing a nut for each screwing. The torque being low at the start, the motor 19 continues to rotate after the engagement of the nut 1 and it is stopped only towards the end of the tightening where the torque becomes significant. The final tightening is obtained by the back and forth of the lever 21, the tightening force being able to be adjusted to a desired value by limiting the air pressure supplying the piston 22.
  • the tool according to the invention makes it possible, by adequate programming of the control means, to successively process nuts which are not adjacent to the crown of the flange. This is often desired to make the tightening more uniform around the edge of the flange. It is also possible to go through several tightening cycles by increasing the final tightening torque from one cycle to another. The remote manipulator does not intervene until the end of the last cycle.
  • the forces used in the various pneumatic motors or pistons are low and that the final tightening torque is produced through a relatively long arm.
  • the size of the tool according to the invention is very small, allowing it to be used in the event that its workplace is surrounded by a bundle of other pipes, provided only that there is somewhere to put the semi-annual structure on the pipe in question.
  • the invention is defined by claim 1 and is not limited to the embodiment described above.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Claims (4)

1. Automatisches Werkzeug zum Festziehen und Lösen einer Schraube oder einer Mutter (1) einer Flanschverbindung (2, 3) zwischen zwei Rohren (4, 5), mit einem Schlüssel (17), der auf den Kopf der Schraube oder der Mutter aufgesetzt werden kann und der durch einen Motor (19) in Drehung versetzt wird, dadurch gekennzeichnet,
- daß der Motor (19) auf einem halbringförmigen Trägergerüst (13) montiert ist, das an den Durchmesser der Rohre (4, 5) angepaßt ist,
- und daß das Werkzeug folgende Komponenten aufweist:
- eine kreisförmige, um eines der Rohre (4) unter Belassung eines vorbestimmten Abstandes von den Flanschen (2, 3) befestigte Schiene (8),
- zwei zur Führung durch die Schiene (8) geeignete Räder (9, 10), die in Richtung der Achse (6) der Rohre beweglich an einem Chassis (24) befestigt sind, das auf dem Gerüst (13) gelenkig gelagert ist,
- ein drittes Rad (11), das zur Führung durch die Schiene (8) geeignet und in Richtung der Achse (6) der Rohre auf dem Gerüst (13) beweglich montiert ist, wobei die drei Räder gegen die Schiene in regelmäßigen Winkelabständen andrücken, wenn sich das Chassis (24) in Betriebsstellung befindet, während eines der Räder (10) von der Schiene abhebt, wenn das Chassis durch Bewegen um seine Gelenkachse (12) weggeschwenkt wird,
- Mittel (15, 20) pneumatischer, hydraulischer oder elektromechanischer Art zur translatorischen Verschiebung des Trägergerüsts (13) in bezug auf die Räder, und zwar parallel zur Achse (6) der Rohre,
- einen auf dem Gerüst gelenkig gelagerten halbringförmigen Hebel (21), dessen Gelenkachse mit der Drehachse (18) des Schlüssels übereinstimmt, wobei ein Hebelende an einen pneumatischen Kolbentrieb (22) angekuppelt ist, der am Gerüst (13) in einem dem Schlüssel in bezug auf die Rohrachse (6) diametral gegenüberliegenden Bereich befestigt ist, und wobei der Hebel (21) drehbeweglich mit dem Schlüssel über umkehrbare, rücklaufgesperrte Klinkeneinrastsysteme (23) gekoppelt ist.
2. Werkzeug nach Anspruch 1, dadurch gekennzeichnet, daß das dritte Rad (11) von einem Motor (14) angetrieben wird, der es ermöglicht, das Werkzeug um die Achse (6) der Rohre zu drehen.
3. Werkzeug nach Anspruch 2, dadurch gekennzeichnet, daß es Mikrokontakte aufweist, die dazu dienen, die Position der Schrauben (1) oder Muttern zur Steuerung des Antriebsmotors (14) des dritten Rads (11) zu erfassen.
4. Werkzeug nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß Mikrokontakte vorhanden sind, die dazu dienen, die pneumatischen Mittel (15, 20) in Abhängigkeit von der Entfernung zwischen dem Trägergerüst (13) und den Flanschen (2, 3) zu steuern.
EP19870106176 1986-04-30 1987-04-28 Automatisches Gerät zum Festziehen oder Lösen von Schraubbolzen einer Flanschverbindung zwischen zwei Rohrleitungen Expired - Lifetime EP0243943B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU86415A LU86415A1 (fr) 1986-04-30 1986-04-30 Outil automatique de serrage et de desserrage d'une vis d'une connexion a brides entre deux tuyaux
LU86415 1986-04-30

Publications (2)

Publication Number Publication Date
EP0243943A1 EP0243943A1 (de) 1987-11-04
EP0243943B1 true EP0243943B1 (de) 1990-04-04

Family

ID=19730690

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870106176 Expired - Lifetime EP0243943B1 (de) 1986-04-30 1987-04-28 Automatisches Gerät zum Festziehen oder Lösen von Schraubbolzen einer Flanschverbindung zwischen zwei Rohrleitungen

Country Status (5)

Country Link
EP (1) EP0243943B1 (de)
DE (1) DE3762099D1 (de)
ES (1) ES2014273B3 (de)
GR (1) GR3000557T3 (de)
LU (1) LU86415A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9411383D0 (en) * 1994-06-07 1994-07-27 Hedley Purvis Ltd Mounting assembly for a plurality of bolt tensioning devices
NL1005891C2 (nl) * 1997-04-24 1998-10-27 Allseas Group Sa Werkwijze en inrichting voor het onder water verbinden van leidingstukken en bout daarvoor.
CN102380764B (zh) * 2010-09-03 2013-06-26 烟台宝钢钢管有限责任公司 气囊式钢管保护环拧接机
CN108127010A (zh) * 2018-02-06 2018-06-08 湖南拯卫建设科技有限公司 管体旋拧设备
CN110948216B (zh) * 2019-12-30 2024-09-10 核动力运行研究所 一种主泵电机支撑把合螺栓的螺母自动拆装工具及方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1304256A (fr) * 1961-10-20 1962-09-21 Euratom Assemblages à brides étanches aux fluides, et procédé pour les réaliser à distance
FR1419167A (fr) * 1964-12-28 1965-11-26 Skil Corp Accessoire de décalage d'entraînement pour les outils comportant un organe rotatifd'entraînement
FR1543960A (fr) * 1967-05-24 1968-10-31 Commissariat Energie Atomique Dispositif d'assemblage télémanipulable
GB1243927A (en) * 1969-07-18 1971-08-25 John Louis Biach Torque applying device

Also Published As

Publication number Publication date
GR3000557T3 (en) 1991-07-31
ES2014273B3 (es) 1990-07-01
LU86415A1 (fr) 1987-06-02
EP0243943A1 (de) 1987-11-04
DE3762099D1 (de) 1990-05-10

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