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
  • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
  • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
  • F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
  • F16B13/08—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front with separate or non-separate gripping parts moved into their final position in relation to the body of the device without further manual operation
  • F16B13/0833—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front with separate or non-separate gripping parts moved into their final position in relation to the body of the device without further manual operation with segments or fingers expanding or tilting into an undercut hole
• • E—FIXED CONSTRUCTIONS
  • E21—EARTH OR ROCK DRILLING; MINING
  • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
  • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
  • E21B41/0007—Equipment or details not covered by groups E21B15/00 - E21B40/00 for underwater installations
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T24/00—Buckles, buttons, clasps, etc.
  • Y10T24/45—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
  • Y10T24/45225—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock] including member having distinct formations and mating member selectively interlocking therewith
  • Y10T24/45471—Projection having movable connection between components thereof or variable configuration
  • Y10T24/45482—Projection having movable connection between components thereof or variable configuration and operator therefor
  • Y10T24/45487—Projection having movable connection between components thereof or variable configuration and operator therefor including camming or wedging element on projection member

Definitions

• the invention relates to a device for fastening together two devices, wherein
• the first device comprises a first frame which carries a body, which has a conical, pointed first end section, and at least one engagement element, which has a first contact section which is arranged to abut against the end section, the engagement element being movable in relation to the end section, considered in the direction of the end section's longitudinal axis, and by means of such a relative movement of the body and the engagement element and under the influence of the end section it can also be moved radially in relation to the end section between a first position, wherein the distance between the longitudinal axis and the engagement element is minimal, and a second position, wherein this distance is at a maximum,
• the second device comprises a second frame with an opening with a narrowed section which forms a shoulder section, through which the engagement element can be inserted when it is located in its first position, and which is arranged to engage with a second contact section of the engagement element when the latter has been passed through the opening and is located in its second position.
• a device of the above-mentioned type is known in the prior art for devices which have to be connected on the seabed.
• the body is movable axially in the first frame and the engagement element is mounted radially movably in the frame.
• a linear hydraulic actuator is employed which is connected to the frame and to a pressure fluid source.
• the devices can be forcibly moved some distance towards each other. This distance corre ⁇ sponds to only possible axial extension of inclined planes of the second engagement section. In order that the axial force which is thereby created and the distance should be substantial, however, the engagement element's radial extension must be large. The device is therefore also space-consuming.
• the object of the invention is to provide a device of the above-mentioned type which is not encumbered by the above-mentioned disadvantages.
• Fig. 1 shows a longitudinal section through a first device with components of the device according to the invention, sections of the device being cut away.
• Fig. 2 shows a longitudinal section through a second device with sections according to the invention, sections of the device being cut away.
• Fig. 3 shows a longitudinal section through the devices which are illustrated in figs. 1 and 2, where the devices are placed together and partially connected to each other, and sections of the devices are cut away.
• Fig. 4 shows a longitudinal section which resembles that which is illustrated in fig. 3, but where the devices are fully connected.
• Fig. 5 shows a section along line V-V through the devices which are illustrated in fig. 4, on an enlarged scale, where three engagement devices are held in a radially outer position.
• Fig. 6 is a side view of one of the engagement devices which are illustrated in fig. 5.
• Fig. 7 show s a section which resembles the section according to fig. 1, but where a different embodiment of a central screw is illustrated.
• a first device 1 comprises a first frame 2 with a flange section 3. Upwards from this flange section 3 there extends a first, circular cylindrical sleeve-shaped section or screw head sleeve 4, and downwards from the flange section 3 there extends a second circular cylindrical sleeve section or guide sleeve 5.
• the screw head sleeve 4 is terminated by a radially inwardly projecting ring flange section 6 which defines a first opening 7.
• the guide sleeve 5 At some distance from the bottom 8 the guide sleeve 5 has an upwardly facing shoulder 10 and its lower end 11 can be pointed conically downwards and radially inwards. Above the shoulder 10 the guide sleeve 5 has an extended section or space 28.
• a tubular, substantially cylindrical, tubular, internally threaded piece or nut 15 with an upper section with an outer cylinder surface 16 which is arranged to be able to slide axially on an inner cylinder surface 17 of the guide sleeve 5.
• these cylinder surfaces there can be provided co-operating axial grooves or teeth (not shown), thus preventing the nut 15 from rotating in the guide sleeve 5.
• ring flange 18 On the upper part of the nut 15 there is a radially outwardly extending ring flange 18, which is arranged to be able to abut against the shoulder 10 of the guide sleeve 5, and which with clearance is arranged for axial movement in the space 28.
• a lower, cylindrical section 12 with a lower, outer cylinder surface 14 with a diameter which is reduced in relation to the diameter of the upper, outer cylinder surface 16.
• the lower cylinder surface 14 is connected with the upper cylinder surface 16 via a contact section 13 in the form of a downwardly pointed, truncated cone.
• the nut 15 In the lower cylindrical section 12 of the nut 15 there are provided three radial openings 19 which are adapted to the cross section of respective engagement elements 50. These will be described in more detail below. Furthermore the nut 15 has a central, axially extending hole whose central section is provided with threads.
• a screw 20 In the centre of the nut 15 there extends a screw 20.
• a cylindrical head 21 On the upper part of the screw 20 there is a cylindrical head 21 which is provided with clearance in the screw head sleeve 4, thus enabling it to rotate, but not to be moved axially.
• the screw head 21 is provided with a coupling section which can be connected to a tool for rotation of the screw 20 in relation to the frame 2.
• the coupling section can be composed of an upwardly open, hexagonal hole 22, into which can be inserted an external hexagonal, pin-shaped tool (not shown).
• the screw 20 Immediately below the head 21 the screw 20 has a cylindrical bearing section 23 which is rotatably mounted in the bearing bore 9.
• the screw 20 has a section 24 with external threads which are screwed into the nut 15, and below the threaded section 24 the screw 20 has a cylindrical blocking section 25.
• the lower part of the screw is terminated by a downwardly pointed, conical end section 26 and a cylindrical guide pin 27.
• the second device 30 comprises a second frame 32 with a flange section 31 from which there extends upwardly an upwardly open, third sleeve-shaped section or receiving sleeve 35 which is arranged to slidingly receive the guide sleeve 5 of the first device 1.
• the bottom of the receiving sleeve 35 is in the form of a radially inwardly extending, annular shoulder 36 which defines a central connection opening 39, and whose upper and lower surfaces 40 and 41 respectively are downwardly and upwardly pointed respectively, these surfaces being in the shape of truncated cones.
• the first device 1 comprises three engagement elements 50 which are provided with an angular spacing of 120° around the screw's longitudinal axis, and in a plane which extends perpendicularly on this axis.
• each of the engagement elements 50 comprises a radially inner, obliquely extending surface or first contact section 52 which is adapted to the angle of slope of the lateral surface of the conical end section 26 of the screw 20.
• each engagement element 50 has a radially outer, obliquely extending surface or second contact section 51 , whose angle of slope is adapted to the angle of slope of the lower surface 41 of the shoulder 36.
• the lower part of the radially inner inclined plane 52 passes on the side which faces the screw's longitudinal axis into an inner surface section 53 which extends parallel thereto. Furthermore the engagement elements have a lower surface section 54 which extends perpendicularly to this screw's longitudinal axis, and whereby they can abut against and slide in a radial direction on that section of the nut 15 whose lower part defines the opening 19.
• the function of the device is as follows, assuming that the devices 1,30 are separated to begin with as illustrated in figs. 1 and 2.
• the nut 15 is screwed downwardly in relation to the screw 20, thus causing the nut's ring flange 18 to abut against the shoulder 10 of the control sleeve 5.
• the screw's guide pin 27 is located radially inside and between the engagement elements 50, and its conical end section 26 is located above these.
• the engagement elements 50 can now be located in a first position in which they are moved so far radially inwards that their radially inner surface section 53 touches the guide pin 27 and their distance from the screw axis is minimal.
• the devices 1,30 In order to connect the devices 1,30 to each other they are positioned in such a manner that the guide sleeve 5 of the first device 1 and the receiving sleeve 35 of the second device 30 extend coaxially to each other, whereupon the guide sleeve 5 is threaded into the receiving sleeve 35 until the nut's contact section 13 abuts against the upper surface 40 of the second device's shoulder 36. If the engagement elements 50 are not located in the first position to begin with, they will abut against the upper surface 40, thus causing them to be moved into the first position.
• any guide pins (not shown) of one of the devices are inserted into associated holes (not shown) of the second of the devices, thus ensuring that rotation of the devices 1,30 in relation to each other is not possible and ensuring that the guide sleeve 5 is passed into the receiving sleeve 35.
• the relative position of the devices corresponds to that which is illustrated in fig. 3.
• a suitable tool is then brought into engagement with the internal hexagon of the screw head 21 and the screw 20 rotated in such a direction that the screw 20 is moved downwardly in relation to the nut 15 while the contact between the contact section 13 and the upper surface 40 is maintained.
• the screw 20 is screwed the other way. If forces are exerted by, e.g., the guide pins (not shown), which forces attempt to prevent the devices from being moved away from each other and to maintain the relative position of the devices which is illustrated in fig. 4, the upper surface of the screw head 21 comes into forceful abutment against the ring flange 6, and the contact section 13 comes into forceful abutment against the shoulder 36, thus pressing the devices away from each other with great force.
• the guide pins not shown
• the engagement sections 50 can be freely moved radially inwards and the guide sleeve 5 can be pulled out of the receiving sleeve 35.
• the cooperating, sloping surfaces 41,51 can cause the engagement elements 50 to be pushed in in this manner during pulling of the first device 1 upwards from the second device 30.
• the powerful drawing together of the devices after they have been connected by means of the engagement elements and the forceful pushing apart of the devices during uncoupling ensure a simple connection or release of, e.g. rapid pipe couplings, guide pins, etc., which may be provided on the devices.
• flanges, screws, etc. which may be necessary for the practical implementation and assembly of the described components of the device, but which do not concern its principal design, have been omitted in the drawing, since the provision of such flanges, etc. will be obvious to a person skilled in the art.
• the two sleeve sections 4,5 of the first device can be connected with its flange section via flanges and screws, or be screwed on to this flange section in order to permit mounting of the screw 20 and the nut 15.
• the screw 20 may preferably be arranged to be rotated by means of a remotely operated vessel or ROV.
• Fig. 7 illustrates an alternative embodiment of a screw corresponding to the screw 20.
• Components in this embodiment which correspond to components in the above-described embodiment are given the same reference numerals in fig. 7.
• the screw comprises a radially outer sleeve 20' which has external threads corresponding to the threads 24, and which are engaged with the nut 15. Internally the sleeve has axially extending splines or teeth 55 which are engaged with complementarily formed splines or teeth 56 of a radially inner stem 20".
• the lower end section of the stem 20" is of a similar design to the lower end section of the screw 20, with a blocking section 25, an end section 26 and a guide pin 27.
• the stem 20" may have force fit in relation to the sleeve 20', thus causing the stem 20" to accompany the sleeve 20' when it is screwed and axially displaced in relation to the nut 15, or there may be provided a radially extending shear pin or the like (not shown), which is inserted into aligned holes in the stem 20" and the sleeve 20'.
• the external sleeve 20' and the stem 20" are thus axially movable in relation to each other when overcoming the force fit or shearing of the shear pin, but rotationally firmly connected.
• a tool can be brought into engagement with the flange 58 and the stem 20" is forcefully pulled axially away from the sleeve 20', overcoming the frictional force which is created by the force fit or shearing of the shear pin, with the result that the lower end section of the stem 20" no longer blocks the engagement elements 50.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mining & Mineral Resources (AREA)
• Geology (AREA)
• Life Sciences & Earth Sciences (AREA)
• Fluid Mechanics (AREA)
• Environmental & Geological Engineering (AREA)
• Physics & Mathematics (AREA)
• Mechanical Engineering (AREA)
• General Life Sciences & Earth Sciences (AREA)
• Geochemistry & Mineralogy (AREA)
• Dowels (AREA)
• Connection Of Plates (AREA)

Priority Applications (4)

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Publications (1)

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Cited By (1)

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Citations (3)

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• 1995
  • 1995-07-27 NO NO952986A patent/NO303746B1/no not_active IP Right Cessation
• 1996
  • 1996-07-25 WO PCT/NO1996/000191 patent/WO1997005397A1/en active Application Filing
  • 1996-07-25 AU AU65362/96A patent/AU6536296A/en not_active Withdrawn
  • 1996-07-25 BR BR9606542A patent/BR9606542A/pt not_active IP Right Cessation
  • 1996-07-25 GB GB9706340A patent/GB2308407B/en not_active Expired - Fee Related
  • 1996-07-25 US US08/809,773 patent/US5803689A/en not_active Expired - Lifetime

Patent Citations (3)

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