WO2017078529A1 - Système de serrage - Google Patents

Système de serrage Download PDF

Info

Publication number
WO2017078529A1
WO2017078529A1 PCT/NL2016/050770 NL2016050770W WO2017078529A1 WO 2017078529 A1 WO2017078529 A1 WO 2017078529A1 NL 2016050770 W NL2016050770 W NL 2016050770W WO 2017078529 A1 WO2017078529 A1 WO 2017078529A1
Authority
WO
WIPO (PCT)
Prior art keywords
pivot
axis
friction
clamp system
base
Prior art date
Application number
PCT/NL2016/050770
Other languages
English (en)
Inventor
Gerardus Cornelius Van Grieken
Original Assignee
Heerema Marine Contractors Nederland Se
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 Heerema Marine Contractors Nederland Se filed Critical Heerema Marine Contractors Nederland Se
Publication of WO2017078529A1 publication Critical patent/WO2017078529A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/12—Laying or reclaiming pipes on or under water
    • F16L1/20—Accessories therefor, e.g. floats, weights
    • F16L1/202—Accessories therefor, e.g. floats, weights fixed on or to vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/12—Laying or reclaiming pipes on or under water
    • F16L1/20—Accessories therefor, e.g. floats, weights
    • F16L1/202—Accessories therefor, e.g. floats, weights fixed on or to vessels
    • F16L1/207—Pipe handling apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/12—Laying or reclaiming pipes on or under water
    • F16L1/20—Accessories therefor, e.g. floats, weights
    • F16L1/23—Pipe tensioning apparatus

Definitions

  • the invention relates to a clamp system for holding a pipe member during pipe laying from a vessel, comprising multiple clamping devices which are radially positioned around a virtual cylinder having a longitudinal cylinder axis.
  • Each clamping device comprises a friction unit and a unit driver configured to move the friction unit in a radial direction with respect to the longitudinal cylinder axis from an inactive position wherein the friction unit in use is positioned at a distance from the pipe member to an active position wherein the friction unit in use is positioned in contact with the pipe member to provide a clamping force on the pipe member in the radial direction, and vice versa.
  • clamp systems are used during pipe laying from a vessel as a static clamp or as a movable clamp. These clamps may be use to hold a pipe line suspending from the vessel to the seabed or to hold a pipe section which will be connected to such a pipeline.
  • the term clamp system may also comprise a tensioner, which has the possibility to move the pads along the axial pipeline direction along a track to allow continuous lowering of a pipeline.
  • US7226244 discloses a clamping system having clamping shoes. As shown in figure 16 of US7226244, each clamping shoe 347 has only one pivot member 359. The movement of the clamping shoe caused by said pivot member is shown in figure 10 of US7226244 and makes it possible to take the correct position when different sizes of tubulars are handled. BACKGROUND OF INVENTION
  • the invention is based on the insight that the contact between the friction unit and the clamped pipe becomes suboptimal when the longitudinal pipe axis of the pipe member does not coincide with longitudinal cylinder axis of the virtual cylinder.
  • the pipe member is in said situation located "off-centre".
  • the result is an unfavourable loading situation as the clamp system is pressed against the pipe member. Unacceptable peak stresses in either the friction unit or the pipe member can occur, which can reduce the allowable holding capacity of the clamp system.
  • a clamp system for holding a pipe member during pipe laying from a vessel, comprising multiple clamping devices which are radially positioned around a virtual cylinder having a longitudinal cylinder axis, wherein
  • each clamping device comprises a friction unit and a unit driver configured to move the friction unit in a radial direction with respect to the longitudinal cylinder axis from an inactive position wherein the friction unit in use is positioned at a distance from the pipe member to an active position wherein the friction unit in use is positioned in contact with the pipe member to provide a clamping force on the pipe member in the radial direction, and vice versa,
  • the friction unit comprises a base structure which is attached to the unit driver, and a friction member having a contact side which in the inactive position is directed towards the longitudinal cylinder axis and a base side which is attached to the base structure by a first pivot member and a second pivot member,
  • first pivot member and second the pivot member are configured to allow movement of the friction member relative to the base structure
  • the first pivot member and the second pivot member are located at a member distance from each other in a tangential direction extending perpendicular to the radial direction and the longitudinal cylinder axis.
  • the first and second pivot member located at a distance from each other allows that the friction member is moved relative to the base structure to obtain a better contact of the contact side on a pipe member being positioned off-centre (see the figures 13-16). This movement differs clearly from the movement of the clamping shoes of US7226244 to adjust to tubulars with different sizes.
  • the first pivot member and the second pivot member of each clamping device are therefore configured to in use adjust the position of the friction member to a part of the pipe member being in contact with the contact side of the friction member located in the active position in order to clamp the pipe member having a longitudinal pipe axis extending at a distance from the longitudinal cylinder axis of the virtual cylinder.
  • the first pivot member is in contact with the base structure via a first base pivot connection having a first base pivot axis and in contact with the friction member via a first member pivot connection having a first member pivot axis
  • - the second pivot member is in contact with the base structure via a second base pivot connection having a second base pivot axis and in contact with the friction member via a second member pivot connection having a second member pivot axis
  • the first base pivot axis, the second base pivot axis, the first member pivot axis and the second member pivot axis extend substantially parallel to the longitudinal cylinder axis.
  • the movement of the friction member relative to the base structure is defined by the first pivot member pivoting about the first base pivot axis and the second pivot member pivoting about the second base pivot axis.
  • the first base pivot axis and the first member pivot axis are located at a first axis distance from each other in the radial direction and the second base pivot axis and the second member pivot axis are located at a second axis distance from each other in the radial direction.
  • the first axis distance and the second axis distance are equal to each other.
  • the first base pivot axis and the first member pivot axis coincide and the second base pivot axis and the second member pivot axis coincide.
  • the contact side of the friction member extends around the longitudinal cylinder axis from a first side rim to a second side rim over a width distance in the tangential direction, and the first member pivot axis and the second member pivot axis are located between, and including, 0 - 20 % of the width distance from the first side rim and the second side rim, respectively.
  • the contact side of the friction member extends in the direction of the longitudinal cylinder axis from an upper rim to a lower rim over a length distance, and each of the first pivot member and the second pivot member extends along between, and including, 60 - 100 % of the length distance.
  • the first pivot member is formed by multiple first pivot parts which are positioned in line with each other and the second pivot member is formed by multiple second pivot parts which are positioned in line with each other.
  • the first pivot member and the second pivot member form in the inactive position the only support of the friction member in the radial direction with respect to the longitudinal cylinder axis and away from the longitudinal cylinder axis.
  • At least part of the fiction member located between the first and second pivot member has a reduced thickness in the radial direction to the longitudinal cylinder axis to create flexibility in the friction member in order to in use adjust the form of the friction member to a part of the pipe member being in contact with the contact side of the friction member located in the active position to clamp the pipe member.
  • the contact side of the friction member has in the inactive position a friction member radius which is larger, preferably between and including 1-5 %, than a pipe member radius of an outer surface of the pipe member.
  • the friction member comprises a support element provided between the first member pivot axis and the second member pivot axis, which support element is configured to transfer axial forces in the direction of the longitudinal cylinder axis to the base structure.
  • the friction member is made of steel.
  • the first and second pivot member and the base structure are made of steel.
  • the first member pivot axis in the tangential direction, is located at a member pivot distance from the second member pivot axis and the first base pivot axis located at a base pivot distance from the second base pivot axis, and the member pivot distance is larger than the base pivot distance.
  • the member pivot distance is between, and including, 10 - 30 % larger than the base pivot distance.
  • the first pivot member comprises a first strip having a first member edge being in contact with the friction member at a first member contact surface and having a first base edge being in contact with the base structure at a first base contact surface,
  • the first base pivot connection is formed by the first member edge being rounded to define the first member pivot axis on the first member contact surface which is configured to receive the first member edge while allowing pivotal movement of the first pivot member about the first member pivot axis,
  • the first member pivot connection is formed by the first member edge being rounded to define the first member pivot axis on the first member contact surface which is configured to receive the first member edge while allowing pivotal movement of the first pivot member about the first member pivot axis,
  • the second pivot member comprises a second strip having a second member edge being in contact with the friction member at a second member contact surface and having a second base edge being in contact with the base structure at a second base contact surface,
  • the second base pivot connection is formed by the second member edge being rounded to define the second member pivot axis on the second member contact surface which is configured to receive the second member edge while allowing pivotal movement of the second pivot member about the second member pivot axis, and
  • the second member pivot connection is formed by the second member edge being rounded to define the second member pivot axis on the second member contact surface which is configured to receive the second member edge while allowing pivotal movement of the second pivot member about the second member pivot axis.
  • the base plate is coupled to the base structure via a coupling which locks the friction member in the radial direction and towards the longitudinal cylinder axis.
  • the base structure comprises a locking opening which faces the friction member, has an opening dimension in the tangential direction and provides access to a locking chamber
  • the friction member comprises a locking protrusion extending through the locking opening and connected to a locking element located in the locking chamber and having an element dimension in the tangential direction
  • - the element dimension of the locking element is larger than the opening dimension in order lock the friction member in the radial direction and towards the longitudinal cylinder axis.
  • the support element and the locking protrusion are formed as a single structure.
  • the multiple clamping devices are located at a fixed position relative to each other on a support structure.
  • the clamp system comprises four clamping devices positioned at an equal distance from each other around the longitudinal cylinder axis.
  • the friction member is friction pad configured to hold the clamped pipe member in a static position.
  • the friction member is a tensioner configured to move the clamped pipe member along the longitudinal cylinder axis.
  • the invention further relates to a pipe laying system for laying a pipeline on a seabed with a vessel, which pipe laying system comprises a clamp system according to the invention.
  • the clamp system forms a hang off clamp of the pipe laying system.
  • the clamp system forms a traveling clamp of the pipe laying system.
  • the invention further relates to a vessel comprising a pipe laying system according to the invention.
  • the invention further relates to a method of laying a pipeline on a seabed with a vessel, which method comprises the steps of;
  • FIG. 1-3 schematically show a top view of an embodiment of the clamp system according to the invention
  • Figures 8A and 8B schematically shows a side view of the friction unit of figure 6
  • Figure 9 schematically shows a top view of the friction unit of figure 6
  • Figure 10 schematically shows a view in perspective of the friction units of the clamp system of figure 1 .
  • FIGS. 1 1-16 schematically show a view in cross section of the clamp system of figure 4.
  • the Figures 1-3 show a top view of an embodiment of the clamp system 1 according to the invention.
  • the clamp system 1 comprises multiple clamping devices 4 which are radially positioned around a virtual cylinder 5 having a longitudinal cylinder axis 6 (see fig. 1).
  • Each clamping device 4 comprises a friction unit 7 and a unit driver 8 configured to move the friction unit 7 in a radial direction 9 with respect to the longitudinal cylinder axis 6 from an inactive position 10 (see fig. 2) wherein the friction unit 7 in use is positioned at a distance from a pipe member 2 to an active position 1 1 (see fig.
  • the friction unit 7 comprises a base structure 12 which is attached to the unit driver 8, and a friction member 13 having a contact side 14 which in the inactive position 10 is directed towards the longitudinal cylinder axis 6 and a base side 15 which is attached to the base structure 12 by a first pivot member 16 and a second pivot member 17.
  • the first pivot member 16 and second pivot member 17 are configured to allow movement of the friction member 13 relative to the base structure 12.
  • the first and second pivot member 16, 17 allow that the friction member 13 is moved relative to the base structure 12 to obtain a better contact of the contact side 14 on the pipe member 2.
  • the first pivot member 16 and the second pivot member 17 of each clamping device 4 are therefore configured to in use adjust the position of the friction member 13 to a part of the pipe member 2 being in contact with the contact side 14 of the friction member 13 located in the active position 1 1 in order to clamp the pipe member 2 having a longitudinal pipe axis 3 extending at a distance from the longitudinal cylinder axis 6 of the virtual cylinder 5.
  • the pipe member 2 has a longitudinal pipe axis 3 and an outer surface 60. In figure 2, the pipe member 2 is not clamped by the clamp system 1.
  • the friction member radius 59 in said situation is indicated. When reference is made to the friction member radius 59, it relates to the friction member radius 59 in the situation that the pipe member 2 is not clamped by the clamp system 1.
  • the multiple clamping devices 4 are located at a fixed position relative to each other on a support structure (not shown.
  • the four clamping devices 4 are positioned at an equal distance from each other around the longitudinal cylinder axis 6.
  • the shown friction members 13 are all friction pads. In other embodiments, the friction members 13 are formed by tensioners.
  • the figures 4 and 5 show a view in perspective of the clamp system 1 of figure 1. Only the friction units 7 of the clamping devices 4 are shown.
  • the virtual cylinder 5 is shown in figure 4, and the pipe member 2 is shown in figure 5.
  • the friction member 13 comprises a support element 36 provided between the first member pivot axis 23 and the second member pivot axis 27, which support element 36 is configured to transfer axial forces in the direction of the longitudinal cylinder axis 6 to the base structure 12.
  • the figures 6 and 7 show a view in perspective of one of the friction units 7.
  • the figures 8A, B and 9 show a side view and a top view, respectively, of the friction unit 7.
  • Figure 8B differs from figure 8A in that the base structure 12 and the locking element 53 are removed.
  • the contact side 14 of the friction member 13 extends in the direction of the longitudinal cylinder axis 6 from an upper rim 33 to a lower rim 34 over a length distance 35.
  • Each of the first pivot member 16 and the second pivot member 17 extends along 95% of the length distance 35. In other embodiments, each of the first pivot member 16 and the second pivot member 17 extends along between, and including, 60 - 100 % of the length distance 35.
  • the first pivot member 16 is formed by multiple first pivot parts which are positioned in line with each other and the second pivot member 17 is formed by multiple second pivot parts which are positioned in line with each other.
  • Figure 10 shows a similar view of the friction units 7 positioned around the virtual cylinder 5 as in figure 4, but with the difference that the base structure 12 and the locking element 53 are removed.
  • the figures 1 1 and 12A, B, and C show a view in cross section perpendicular to the longitudinal cylinder axis 6 of the clamp system 1 of figure 4.
  • the first pivot member 16 and the second pivot member 17 are located at a member distance 18 from each other in a tangential direction 19 extending perpendicular to the radial direction 9 and the longitudinal cylinder axis.
  • the first pivot member 16 is in contact with the base structure 12 via a first base pivot connection 20 having a first base pivot axis 21 and in contact with the friction member 13 via a first member pivot connection 22 having a first member pivot axis 23.
  • the second pivot member 17 is in contact with the base structure 12 via a second base pivot connection 26 having a first member pivot axis 25 and in contact with the friction member 13 via a second member pivot connection 26 having a second member pivot axis 27.
  • the first base pivot axis 21 , the first member pivot axis 25, the first member pivot axis 23 and the second member pivot axis 27 extend substantially parallel to the longitudinal cylinder axis 6.
  • the first base pivot axis 21 and the first member pivot axis 23 are located at a first axis distance 28 from each other in the radial direction 9 and the first member pivot axis 25 and the second member pivot axis 27 are located at a second axis distance 29 from each other in the radial direction 9.
  • the first axis distance 28 and the second axis distance 29 are equal to each other.
  • the first base pivot axis 21 and the first member pivot axis 23 coincide and the first member pivot axis 25 and the second member pivot axis 27 coincide.
  • the contact side 14 of the friction member 13 extends around the longitudinal cylinder axis 6 from a first side rim 30 to a second side rim 31 over a width distance 32 in the tangential direction 19, and the first member pivot axis 23 and the second member pivot axis 27 are located about 13% of the width distance 32 from the first side rim 30 and the second side rim 31 , respectively.
  • the first member pivot axis 23 and the second member pivot axis 27 are located between, and including, 0 - 20 % of the width distance 32 from the first side rim 30 and the second side rim 31 , respectively.
  • the first pivot member 16 and the second pivot member 17 form in the inactive position 10 the only support of the friction member 13 in the radial direction 9 with respect to the longitudinal cylinder axis 6 and away from the longitudinal cylinder axis 6. At least part of the friction member 13 located between the first and second pivot member 17 has a reduced thickness t in the radial direction 9 to the longitudinal cylinder axis 6 to create flexibility in the friction member 13 in order to in use adjust the form of the friction member 13 to a part of the pipe member 2 being in contact with the contact side 14 of the friction member 13 located in the active position 1 1 to clamp the pipe member 2.
  • the areas 61 with the reduced thickness t in the radial direction 9 are indicated in figure 12C.
  • the form the friction member radius 59 may deform.
  • the flexibility of the friction member 13 allows that it can adjust to the new form of the pipe member 2.
  • the contact side 14 of the friction member 13 has in the inactive position 10 a friction member radius 56 (see figure 1 1) which is larger, preferably between and including 1-5 %, than a friction member radius 59 of an outer surface 60 of the pipe member 2 (see figure 2). This facilitates the adjusting of the friction member 13 to the form of the pipe member 2.
  • the friction member 13 is made of steel. Steel provided the right flexibility for the friction member 13.
  • the first and second pivot member 17 and the base structure 12 are also made of steel.
  • the first member pivot axis 23 is located at a member pivot distance 38 from the second member pivot axis 27 and the first base pivot axis 21 located at a base pivot distance 39 from the first member pivot axis 25, and the member pivot distance 38 is larger than the base pivot distance 39.
  • the member pivot distance 38 is about 20 % larger than the base pivot distance. In other embodiments, the member pivot distance 38 is between, and including, 10 - 30 % larger than the base pivot distance.
  • the first pivot member 16 comprises a first strip 40 having a first member edge 41 being in contact with the friction member 13 at a first member contact surface 42 and having a first base edge 43 being in contact with the base structure 12 at a first base contact surface 57.
  • the first base pivot connection 20 is formed by the first member edge 41 being rounded to define the first member pivot axis 23 on the first member contact surface 42 which is configured to receive the first member edge 41 while allowing pivotal movement of the first pivot member 16 about the first member pivot axis 23.
  • the first member pivot connection 22 is formed by the first member edge 41 being rounded to define the first member pivot axis 23 on the first member contact surface 42 which is configured to receive the first member edge 41 while allowing pivotal movement of the first pivot member 16 about the first member pivot axis 23.
  • the second pivot member 17 comprises a second strip 44 having a second member edge 45 being in contact with the friction member 13 at a second member contact surface 46 and having a second base edge 47 being in contact with the base structure 12 at a second base contact surface 58.
  • the second base pivot connection 26 is formed by the second member edge 45 being rounded to define the second member pivot axis 27 on the second member contact surface 46 which is configured to receive the second member edge 45 while allowing pivotal movement of the second pivot member 17 about the second member pivot axis 27.
  • the second member pivot connection 26 is formed by the second member edge 45 being rounded to define the second member pivot axis 27 on the second member contact surface 46 which is configured to receive the second member edge 45 while allowing pivotal movement of the second pivot member 17 about the second member pivot axis 27.
  • the base plate is coupled to the base structure 12 via a coupling 48 which locks the friction member 13 in the radial direction 9 and towards the longitudinal cylinder axis 6.
  • the base structure 12 comprises a locking opening 49 which faces the friction member 13, has an opening dimension 50 in the tangential direction 19 and provides access to a locking chamber 51.
  • the friction member 13 comprises a locking protrusion 52 extending through the locking opening 49 and connected to a locking element 53 located in the locking chamber 51 and having an element dimension 54 in the tangential direction 19.
  • the element dimension 54 of the locking element 53 is larger than the opening dimension 50 in order lock the friction member 13 in the radial direction 9 and towards the longitudinal cylinder axis 6.
  • the support element 36 and the locking protrusion 52 are formed as a single structure 55.
  • the support element 36 and the locking protrusion 52 are formed as separate structures
  • the figures 13 and 14 show the views in cross section of the figures 1 1 and 12 in the situation that the clamping device 4 clamp a pipe member 2 with its longitudinal pipe axis 3 extending at a distance from the longitudinal cylinder axis 6.
  • the longitudinal pipe axis 3 is located at the right of the longitudinal cylinder axis 6.
  • the pipe member 2 is located about +10 mm off-centre.
  • the position of the friction member 13s as shown in the figures 1 1 and 12 are indicted with discontinuous lines. This way, it can be seen how the upper and lower friction member 13s are moved.
  • the movement of said friction member 13s relative to their base structure 12 is defined by the first pivot member 16 pivoting about the first base pivot axis 21 and the second pivot member 17 pivoting about the first member pivot axis 25.
  • the figures 15 and 16 show in a similar manner the situation that the pipe member 2 is located about -10 mm off-centre.

Abstract

L'invention concerne un système de serrage pour maintenir un élément de tuyau (2) lors de la pose de tuyaux à partir d'un navire, lequel système comprend de multiples dispositifs de serrage (4) qui sont positionnés radialement autour d'un cylindre virtuel (5) ayant un axe longitudinal de cylindre (6), chaque dispositif de serrage (4) comprenant une unité de frottement (7) et un dispositif d'actionnement unitaire (8) configuré pour déplacer l'unité de frottement (7) dans une direction radiale (9) par rapport à l'axe longitudinal de cylindre (6) à partir d'une position inactive (10) dans laquelle l'unité de frottement (7), lors de l'utilisation, est positionnée à une certaine distance vis-à-vis de l'élément de tuyau (2), jusqu'à une position active (11) dans laquelle l'unité de frottement (7), lors de l'utilisation, est positionnée en contact avec l'élément de tuyau (2) de façon à délivrer une force de serrage sur l'élément de tuyau dans la direction radiale (9), et inversement.
PCT/NL2016/050770 2015-11-05 2016-11-04 Système de serrage WO2017078529A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2015731A NL2015731B1 (en) 2015-11-05 2015-11-05 Clamp system.
NL2015731 2015-11-05

Publications (1)

Publication Number Publication Date
WO2017078529A1 true WO2017078529A1 (fr) 2017-05-11

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ID=55358063

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NL (1) NL2015731B1 (fr)
WO (1) WO2017078529A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220034428A1 (en) * 2018-10-12 2022-02-03 F.Lli Righini S.R.L. Gripping device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020021942A1 (en) * 2000-06-05 2002-02-21 Willis Stewart Kenyon Pipe handling apparatus
US7226244B1 (en) 2002-08-19 2007-06-05 Itrec B.V. System for overload protection for pipe or cable laying structures
US20120177443A1 (en) * 2008-11-28 2012-07-12 Saipem S.P.A. Clamp Assembly For A Laying Tower And A Method Thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020021942A1 (en) * 2000-06-05 2002-02-21 Willis Stewart Kenyon Pipe handling apparatus
US7226244B1 (en) 2002-08-19 2007-06-05 Itrec B.V. System for overload protection for pipe or cable laying structures
US20120177443A1 (en) * 2008-11-28 2012-07-12 Saipem S.P.A. Clamp Assembly For A Laying Tower And A Method Thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220034428A1 (en) * 2018-10-12 2022-02-03 F.Lli Righini S.R.L. Gripping device

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