GB2530543A

GB2530543A - Reel drive assembly

Info

Publication number: GB2530543A
Application number: GB1416961.9A
Authority: GB
Inventors: Nishant Nadagouda
Original assignee: ALFRED CHEYNE ENGINEERING Ltd
Current assignee: ALFRED CHEYNE ENGINEERING Ltd
Priority date: 2014-09-25
Filing date: 2014-09-25
Publication date: 2016-03-30
Anticipated expiration: 2034-09-25
Also published as: US20170297854A1; US10538407B2; EP3197808A1; SG11201702218SA; GB201416961D0; EP3197808B1; WO2016046525A1; GB2530543B

Abstract

A modular reel drive assembly comprises two reel drive towers 12, 14, a reel hub adapter 54 and a reel hub adapter support 22, 24. The hub adapter support 22, 24 comprises at least one support pin which is movable between a storage position in which the at least one support pin is not aligned with at least one aperture on the hub adapter support 22, 24 and an operational position in which the support pin is aligned with at least one aperture on the hub adapter support 22, 24. At least one aperture on the hub adaptor support 22, 24 may be aligned with at least one aperture 26a, 26b, 28a, 28b on at least one reel drive tower 12, 14. The reel hub adapter support 22, 24 may comprise a sliding drive unit 24, a crawler unit 22, at least one lifting device, at least one hydraulic cylinder 30, 32, 34, 36 which moves the support pin and/or a protective frame. The reel drive towers 12, 14 may each comprise at least one channel 18, 20 in which the hub adaptor support 22, 24 is slidably mounted.

Description

1 Reel Drive Assembly 3 The present invention relates to a reel drive assembly used to spool cables and other lines 4 onto and off reel drums, and in particular to a modular reel drive assembly. Aspects of the invention include a modular reel drive assembly including an improved reel hub adapter 6 support assembly and a method of use.

8 Background to the invention

Reel drive assemblies are required to perform a range of tasks including winding, reeling, 11 spooling, lifting and lowering lines such as cable, rope, wire, umbilicals, flowlines, hoses, 12 pipes, cords, or conduits onto or from a reel.

14 Typically, reel drive assemblies work in pairs with each assembly utilising a reel hub adapter to engage with one side wall flange of the reel to support and/or drive the reel. The 1 reel drive assemblies generally comprise vertical hydraulic cylinders or jacks to lift the reel 2 out of a cradle to allow the reel to rotate or to be driven during spooling or unspooling onto 3 or off the reel.

S US 5,875991 describes a winch device for winding or unwinding flexible articles. The 6 winch device has a carriage located at each side of the reel drum with each carriage 7 capable of lifting and lowering the reel drum. Bearings on each carriage are capable of 8 moving horizontal to engage and/or disengage with the reel drum.

US 4,284249 describes a winch device for winding and unwinding elongated articles such 11 as underwater conduit or cables. The winch device has two spaced apart spindles which 12 can be moved vertically, horizontally and towards each other to handle spools when the 13 spool are supported with their axes perpendicular to the direction of unwinding the conduit 14 or cable.

16 Reel drive assemblies may be required to be transported to a different location. Relocating 17 reel drive assemblies can be cumbersome, time consuming and expensive as they are 18 required to be sturdy and sufficiently large and heavy to support a wide range of reel 19 diameters, sizes and weights.

21 Furthermore, although the above-described reel drive assemblies are designed to tolerate 22 heavy reel loads, prolonged exposure to heavy reel loads, particularly in environments 23 such as offshore can result in damage to components of the assemblies.

It is an object of an aspect of the present invention to provide a reel drive assembly which 26 is modular; which may be readily transported, assembled and/or disassembled and/or is 27 suitable for a range of applications in offshore and/or onshore environments of different 28 types and sizes.

It is another object of at least one aspect of the present invention to provide a modular reel 31 drive assembly which is designed for easy and rapid assembly and disassembly.

33 It is amongst the aims of at least one aspect of the invention to provide a reel hub adapter 34 support assembly that is capable of improving the performance of a reel drive assembly by enabling the reel drive assembly to withstand prolonged exposure to heavy reel loads.

1 Further aims and objects of the invention will become apparent from reading the following

2 description.

4 Summary of the invention

S

6 According to a first aspect of the invention, there is provided a modular reel drive assembly 7 comprising: 8 two reel drive tower modules; 9 a reel hub adapter; and a reel hub adapter support module; 11 wherein the hub adapter support module comprises at least one support pin which is 12 configured to be movable between a storage position in which the at least one support pin 13 is not aligned with at least one aperture on the hub adapter support module and 14 an operational position in which the support pin is aligned with at least one aperture on the hub adapter support module.

17 The term storage position will be understood to be an inoperative position in which the at 18 least one support pin is retracted or withdrawn from the operational position. The storage 19 position therefore enables assembly, disassembly and/or transport of the modules. In particular, in the storage position, the at least one support pin is clear of the at least one 21 aperture on the hub adapter support module, and therefore does not hamper or impede 22 assembly and/or disassembly or transportation of the modules.

24 In contrast, the operational position will be understood to be an operative position in which the at least one support pin is aligned with at least one aperture on the hub adapter 26 support module, and is ready to be operated to extend or retract the support pin into the 27 aperture.

29 The reel hub adapter support module with at least one support pin is capable of being moved between a storage position and an operational position which may facilitate easy 31 assembly, disassembly and/or transport of the modular reel drive assembly. The at least 32 one support pin may be configured to be positioned in a storage position during assembly, 33 disassembly and/or transport of the reel drive assembly which may prevent the at least 34 one support pin from contacting, or being an obstacle to, other components of the reel drive assembly.

1 The invention may provide a robust, reliable and sturdy reel drive assembly. The ability of 2 the support pin to be moved between an operational position and a storage position may 3 prevent the support pin being damaged during assembly, disassembly or transport of the 4 hub adapter support module.

S

6 Preferably the reel drive assembly comprises a base frame module. The two reel drive 7 tower modules may be moveably mounted on the base frame module. The base frame 8 may be configured to be mounted on tracks or rails.

Preferably the hub adapter support module is movably mounted between the two reel drive 11 tower modules and the at least one aperture on the hub adapter support module is 12 configured to be aligned with at least one aperture on at least one reel drive tower module.

14 The reel drive assembly may comprise a control unit which is configured to control the movement of the support pin. The control unit may be configured to control the movement 16 of the support pin between a storage position and an operational position.

18 The control unit may be configured to control the extension or retraction of the support pin 19 through the aperture on the hub adapter support module and/or through at least one aperture on at least one tower module.

22 The reel drive assembly may be used to spool a wide variety of lines, including but not 23 limited to cable, tether, rope, wire, wire rope, flowlines, umbilical, pipe, cord or conduit onto 24 or from a reel.

26 Preferably the reel hub adapter is configured to engage one side of a reel drum. The reel 27 drive reel hub adapter may be configured to be movably mounted between the two reel 28 drive tower modules.

Preferably the reel hub adapter is mounted on the hub adapter support module.

32 Preferably the reel hub adapter support module comprises a sliding drive unit. More 33 preferably the reel hub adapter support module comprises a sliding drive unit and a 34 crawler unit.

1 The reel hub adapter support module may comprise at least one lifting device to lift the 2 reel hub. The lifting device may be a mechanical, hydraulic or pneumatic lifting device.

3 Preferably the lifting device is a hydraulic cylinder such as a hydraulic jack.

S Preferably the at least one lifting device is located between the sliding drive unit and the 6 crawler unit. The at least one lifting device may be configured to extend or retract between 7 the sliding drive unit and the crawler unit.

9 The hub adapter support module may comprise least one hydraulic cylinder configured to extend or retract the support pin through the aperture on the hub adapter support module.

12 Preferably the least one hydraulic cylinder is configured to extend or retract the support pin 13 through the aperture on the hub adapter support module and through at least one aperture 14 on the tower modules.

16 The hub adapter support module may comprise at least one hydraulic cylinder configured 17 to move the at least one support pin between an operational position and a storage 18 position.

The hub adapter support module may comprise a protective frame.

22 Preferably, in the storage position the at least one support pin is within a volume defined 23 by the protective frame.

Preferably, in the operational position the at least one support pin is located outside a 26 volume defined by the protective frame.

28 Preferably, the protective frame is configured to protect the at least one support pin when 29 in a storage position. Preferably the protective frame is located on the sliding drive unit.

31 The reel drive towers may each comprise at least one channel located on the inside 32 surface of each tower. Preferably each reel drive tower comprises a channel and the reel 33 hub adapter support module is slidably mounted between the two reel drive tower modules 34 in the channels.

1 Preferably the at least one channel is a U-shaped channel.

3 The reel drum hub adapter may be driven by a motor. The motor may be mounted on the 4 reel hub adapter support module. Preferably the motor may be mounted on the sliding S drive unit.

7 According to a second aspect of the invention, there is provided a reel hub adapter support 8 module for use in a reel drive assembly comprising: 9 at least one support pin configured to extend through an aperture on the reel hub support module; 11 wherein the at least one support pin is configured to move between a storage position in 12 which the at least one support pin is not aligned with at least one aperture on the hub 13 support adapter module and an operational position in which the support pin is aligned 14 with at least one aperture on the hub adapter support module.

16 The hub adapter support module may comprise at least one hydraulic cylinder configured 17 to move the at least one support pin between a storage position and an operational 18 position.

The hub adapter support module may comprise at least one hydraulic cylinder configured 21 to extend or retract the support pin through the aperture on the hub adapter support 22 module.

24 Preferably the reel hub adapter support module comprises a sliding drive unit. More preferably the reel hub adapter support module comprises a sliding drive unit and a 26 crawler unit.

28 The reel hub adapter support module may comprise at least one hydraulic cylinder located 29 between the sliding drive unit and the crawler unit. The at least one hydraulic cylinder may be configured to extend or retract between the sliding drive unit and the crawler unit.

32 Preferably the sliding drive unit comprises at least one hydraulic cylinder configured to 33 extend or retract the support pin through an aperture on the sliding drive unit and through 34 at least one aperture on at least one of the tower module.

1 Preferably the crawler unit comprises at least one hydraulic cylinder configured to extend 2 or retract the support pin through an aperture on the crawler unit and through at least one 3 aperture on at least one of the tower module.

S Preferably the sliding drive unit and/or the crawler unit may comprise at least one 6 positional hydraulic cylinder configured to move the at least one support pin between an 7 operational position and a storage position.

9 The reel hub adapter support module may comprise or be connected to a control unit which is configured to control the movement of the support pin between a storage position 11 and an operational position 13 Preferably the hub adapter support module is configured to be slidably mounted between 14 two reel drive tower modules.

16 Preferably the at least one hydraulic cylinder is configured to extend or retract the support 17 pin through the aperture on the hub adapter support module and through at least one 18 aperture on at least one of the reel drive tower modules.

The reel hub adapter support module may be connected to a control unit configured to 21 control the extension or retraction of the support pin through the aperture on the hub 22 adapter support module and/or through at least one aperture on at least one tower 23 module.

The sliding drive unit and/or crawler unit may comprise a protective frame configured to 26 protect the at least one support pin when in a storage position.

28 Embodiments of the second aspect of the invention may comprise features corresponding 29 to the preferred or optional features of the first aspect of the invention or vice versa.

31 According to a third aspect of the invention there is provided a method of assembling a 32 modular reel drive assembly comprising the steps of: 33 providing two reel drive tower modules; and 34 a reel hub adapter support module comprising: 1 at least one support pin configured to extend through an aperture on the reel hub support 2 assembly; 3 mounting the reel hub adapter support module between the two reel drive tower modules; 4 and S moving the at least one support pin from a storage position in which the at least one 6 support pin is not aligned with at least one aperture on the hub adapter support module to 7 an operational position in which the at least one support pin is aligned with at least one 8 aperture on the hub adapter support module.

By providing a reel drive assembly composed of prefabricated functional modules ready 11 for assembly, the modular assembly may facilitate easy assembly, disassembly and 12 transportation of the reel drive assembly.

14 The reel hub adapter support module having at least one support pin which is capable of being moved between an operational position and a storage position may facilitate easy 16 assembly and/or disassembly of the modular reel drive assembly.

18 The at least one support pin may be located at the retracted storage position during or 19 before transport of the reel hub adapter support module. Alternately or additionally the at least one support pin may be moved to the retracted storage position during or before 21 assembly of the reel drive assembly. By locating the at least one support pin at the storage 22 position before or during assembly it may facilitate the mounting of the reel hub adapter 23 support module on, in or to the assembly. The positioning of the least one support pin in 24 the storage position prevents the at least one support pin from contacting, or being an obstacle to, other components of the reel drive assembly during assembly. The reel hub 26 adapter support module may then be positioned and/or mounted between the two reel 27 drive tower modules.

29 The positioning of the least one support pin in the storage position may also prevent the at least one support pin from being damaged during transport.

32 The method may comprise controlling the movement of the at least one support pin 33 between a storage position and an operational position. Preferably, the method may 34 comprise controlling the movement of the at least one support pin from a storage position to an operational position.

1 The method may comprise the step of moving the at least one support pin from an 2 operational position in which the at least one support pin is aligned with at least one 3 aperture on the reel hub adapter support module to a storage position in which the at least 4 one support pin is not aligned with at least one aperture on the hub adapter support S module prior to mounting the reel hub adapter support module between the two reel drive 6 tower modules.

8 The method may comprise extending or retracting the at least one support pin through the 9 aperture on the reel hub adapter support module and/or through at least one aperture on at least one reel drive tower module.

12 The method may comprise controlling the extension or retraction of the at least one 13 support pin through the aperture on the reel hub adapter support module and/or through at 14 least one aperture on at least one reel drive tower module.

16 The method may comprise mounting the two reel drive tower modules on a base frame 17 module. The method may comprise moveably mounting the tower modules on the base 18 frame module.

The method may comprise mounting a reel hub adapter on the reel hub adapter support 21 module.

23 Embodiments of the third aspect of the invention may comprise features corresponding to 24 the preferred or optional features of the first or second aspects of the invention or vice versa.

27 According to a fourth aspect of the invention there is provided a method of disassembling 28 a modular reel drive assembly comprising the steps of: 29 providing a modular reel drive assembly comprising two reel drive tower modules and a reel drive hub adapter support module mounted between the two reel drive tower 31 modules; 32 wherein the reel hub adapter support module comprises at least one support pin 33 configured to extend through an aperture on the hub adapter support module; 34 moving the at least one support pin from a operational position in which the support pin is aligned with at least one aperture on the hub adapter support module to a storage position 1 in which the at least one support pin is not aligned with at least one aperture on the hub 2 adapter support module; and 3 removing the hub adapter support module from between the at least two tower modules.

S By moving the at least one support pin to the retracted storage position before or during 6 disassembly it may facilitate the removal, dismounting and/or disassembly of reel hub 7 adapter support module from the assembly. Once the at least one support pin is moved to 8 the retracted storage position it may be removed from between the two reel drive tower 9 modules. The positioning of the least one support pin in the retracted storage position prevents the at least one support pin from contacting, or being an obstacle to, other 11 components of the reel drive assembly during disassembly.

13 The method may comprise controlling the movement of the at least one support pin 14 between an operational position and a storage position. Preferably the method may comprise controlling the movement of the at least one support pin from an operational 16 position to a storage position.

18 The method may comprise retracting the at least one support pin through the aperture on 19 the reel hub adapter support module and/or through at least one aperture on at least one reel drive tower module prior to moving the at least one support pin from an operational 21 position to a storage position.

23 The method may comprise controlling the retraction of the at least one support pin through 24 the aperture on the reel hub adapter support module and/or through at least one aperture on at least one reel drive tower module.

27 The method may comprise disassembling a reel hub adapter from the reel hub adapter 28 support module.

The method may comprise disassembling the two reel drive tower modules from a base 31 frame module.

33 Embodiments of the fourth aspect of the invention may comprise features corresponding to 34 the preferred or optional features of the first, second or third aspects of the invention or vice versa.

1 According to a fifth aspect of the invention there is provided a modular reel drive assembly 2 comprising: 3 two reel drive tower modules; 4 a reel hub adapter; and S a reel hub adapter support module; 6 wherein the hub adapter support module comprises at least one support pin which is 7 configured to move between a storage position in which the at least one support pin is 8 within a volume defined by a protective frame and 9 an operational position in which the support pin is located outside a volume defined by a protective frame.

12 Preferably, in the storage position the at least one support pin is not aligned with at least 13 one aperture on the hub adapter support module.

Preferably, in the operational position the at least one support pin is aligned with at least 16 one aperture on the hub adapter support module.

18 Embodiments of the fifth aspect of the invention may include one or more features of the 19 first to fourth aspects of the invention or their embodiments, or vice versa.

21 According to a sixth aspect of the invention, there is provided a reel hub adapter support 22 module for use in a reel drive assembly comprising: 23 at least one support pin configured to extend through an aperture on the reel hub support 24 module; wherein the at least one support pin is configured to move between a storage position in 26 which the at least one support pin is within a volume defined by a protective frame and an 27 operational position in which the support pin is located outside a volume defined by a 28 protective frame.

Embodiments of the sixth aspect of the invention may include one or more features of the 31 first to fifth aspects of the invention or their embodiments, or vice versa.

32 According to a seventh aspect of the invention there is provided a method of assembling a 33 modular reel drive assembly comprising the steps of: 34 providing two reel drive tower modules; and a reel hub adapter support module comprising: 1 at least one support pin configured to extend through an aperture on the reel hub support 2 assembly; 3 mounting the reel hub adapter support module between the two reel drive tower modules; 4 and moving the at least one support pin from a storage position in which the support pin is S located within a volume defined by a protective frame to an operational position in which 6 the at least one support pin is outside a volume defined by a protective frame.

8 Embodiments of the seventh aspect of the invention may include one or more features of 9 the first to sixth aspects of the invention or their embodiments, or vice versa.

11 According to a eighth aspect of the invention there is provided a method of disassembling 12 a modular reel drive assembly comprising the steps of: 13 providing a modular reel drive assembly comprising two reel drive tower modules and 14 a reel drive hub adapter support module mounted between the two reel drive tower modules; 16 wherein the reel hub adapter support module comprises at least one support pin 17 configured to extend through an aperture on the hub adapter support module; 18 moving the at least one support pin from an operational position in which the at least one 19 support pin is outside a volume defined by a protective frame to a storage position in which the support pin is located within a volume defined by a protective frame; and 21 removing the hub adapter support module from between the at least two tower modules.

23 Embodiments of the eighth aspect of the invention may include one or more features of the 24 first to seventh aspects of the invention or their embodiments, or vice versa.

1 Brief description of the drawings

3 There will now be described, by way of example only, various embodiments of the 4 invention with reference to the following drawings (like reference numerals referring to like S features) in which: 7 Figure 1A presents a modular reel drive assembly shown in partially exploded perspective 8 view; Figure lB presents a modular reel drive assembly shown in partially assembled 11 perspective view with a tower module removed for clarity; 13 Figure 2A presents a sliding drive unit of the modular reel drive assembly of Figure 1 14 shown in perspective view; 16 Figure 2B presents a sliding drive unit of the embodiment of Figure 2A shown in 17 profile view; 19 Figure 3 presents a crawler unit of the modular reel drive assembly of Figure 1 shown in partially exploded perspective view.

22 Detailed description of preferred embodiments

24 As discussed in the background to the invention above, it is an object of at least one aspect of the present invention to provide a reel drive assembly which is modular; which 26 may be readily transported, assembled and/or disassembled and is suitable for a range of 27 applications in offshore and/or onshore environments of different types and sizes.

29 Figures 1A and lB show a modular reel drive assembly 10 according to a first embodiment of the invention. Figure 1A shows a partially exploded schematic view and Figure 1 B 31 shows an partially assembled view of the modular reel drive assembly with one tower 32 module removed (tower 12) for clarity.

34 The modular reel drive assembly 10 can be seen to comprise a first tower module 12 and a second tower module 14 mountable on base frame module 16. When assembled the first 1 and second tower modules 12, 14 are axially aligned and opposed structures which are 2 separated by a gap. Channels 18 and 20 are provided on tower modules 12 and 14 3 respectively. A reel hub adapter support module comprises a crawler unit 22 and a sliding 4 drive unit 24 is located between the tower modules 12 and 14 and is slideably mounted in S the channels 18 and 20. A reel drive hub adapter 54 is mounted on the sliding drive unit 6 24. The reel drive hub adapter 54 is configured to engage one side of a reel (not shown).

8 The crawler unit 22 and sliding drive unit 24 are configured to move in the channels 18 and 9 20. The channel 18 has a vertical series of holes 26a and 26b on each peripheral edge which are configured to receive a supporting pin of the crawler unit 22 and a supporting pin 11 of the sliding drive unit 24. The channel 20 has a vertical series of holes 28a and 28b on 12 each peripheral edge which are configured to receive a supporting pin of the crawler unit 13 22 and a supporting pin of the sliding drive unit 24.

On the rear side of the crawler unit 22 and sliding drive unit 24 are mounted support pin 16 hydraulic units 30, 32, 34 and 36. The crawler unit 22 is configured to be locked into a 17 selected position or height relative to the tower modules 12 and 14 by actuating the 18 support pin hydraulic units 30 and 32.

The support pin hydraulic unit 30 on the crawler unit 22 is configured to extend a support 21 pin first through one of a series of holes on the first peripheral edge of channel 18, then 22 through hole 38 in the crawler unit 22 and extend through a corresponding hole 26b on the 23 second peripheral edge of channel 18. The support pin hydraulic unit 32 on the crawler 24 unit 22 performs a similar action to position a supporting pin thorough a hole 28a, then through hole 39 in the crawler unit and finally through hole 28b of channel 20.

27 Similarly the sliding drive unit 22 is configured to be locked at a selected position or height 28 relative to the tower modules 12 and 14 by actuating the support pin hydraulic units 34 and 29 36. The support pin hydraulic unit 34 on the sliding drive unit 24 is configured to extend a support pin first through a hole on the first peripheral edge of channel 18, then through 31 hole 40 in the sliding drive unit 24 and extending through corresponding hole 26b on the 32 second peripheral edge of channel 18. The support pin hydraulic unit 36 performs a similar 33 action to position a supporting pin thorough one of a series of holes 28a, then through 34 hole 41 in the sliding drive unit and finally through corresponding hole 28b of channel 20.

1 Figures 2a and 2b show the sliding drive unit 24 of the reel hub support assembly 2 according to a second embodiment of the invention, shown in perspective and profile 3 views. Hydraulic units 34 and 36 are pivotally mounted on the sliding drive unit 24. The 4 hydraulic units 34 and 36 comprise support members 221 and 222, sleeve members 223 S and 224, support pin hydraulic cylinders 225 and 226 and positioning hydraulic cylinders 6 227 and 228 respectively.

8 The support member 221 of the hydraulic unit 34 is affixed to the sliding drive unit 24 and 9 secures the hydraulic unit 34 to the sliding drive unit 24. The support member 221 is secured to the sliding drive unit using bolts. This is merely an example and any other 11 manner of affixing the support member 221 to the sliding drive unit may be used, such as 12 welding if the material is suitable.

14 The sleeve member 223 is affixed to the support pin hydraulic cylinder 225 and is configured to be rotationally mounted on the support member 221. The positioning 16 hydraulic cylinder 227 is pivotally attached to the sleeve member 223 and is configured to 17 pivotally rotate the sleeve member 223 and the affixed support pin hydraulic cylinder 225 18 during actuation of the positioning hydraulic cylinder 227.

A control unit (not shown) is connected to the support pin hydraulic cylinder 225 and the 21 positioning hydraulic cylinder 227 and is configured to control the position of the support 22 pin hydraulic cylinder 225 by controlling the actuation of the positioning hydraulic cylinder 23 227. The control unit is also configured to control the actuation of the support pin hydraulic 24 cylinder 225 to extend the support pin through the hole 40.

26 The hydraulic unit 36 functions in the same manner as the hydraulic unit 34. The actions of 27 the support members 222, sleeve members 224, support pin hydraulic cylinders and 226 28 and positioning hydraulic cylinders 228 are similar for the corresponding components on 29 the hydraulic unit 34 as described above. The control unit is configured to control the actuation of the support pin hydraulic cylinder 226 and positioning hydraulic cylinder 228.

32 Figure 2b shows the hydraulic unit 36 positioned in an operational position and the 33 hydraulic unit 34 in a storage position. The hydraulic units 34 and 36 may be configured to 34 be positioned in either an operational position or a storage position at the same time.

However, for illustration the control unit has actuated the hydraulic units 34 and 36 to 1 position the hydraulic unit 34 in a storage position and the hydraulic unit 36 in an 2 operational position.

4 In the storage position the support pin hydraulic cylinder 225 of hydraulic unit 34 is not S aligned with the hole 40 in the sliding drive unit 24.

7 To move the support pin hydraulic cylinder 225 from an operational position to a storage 8 position the support pin hydraulic cylinder 225 is pivoted about the support member 221 9 away from the periphery of the sliding drive unit 24 to a position inside the perimeter of a protective frame 240. The support pin hydraulic cylinder 225 is pivoted about the support 11 member 221 by actuating the positioning hydraulic cylinder 227 to an extended position.

12 As the positioning hydraulic cylinder 227 extends it pushes the support pin hydraulic 13 cylinder 225 in an anticlockwise direction about the support member 221. Once the 14 positioning hydraulic cylinder 227 has fully extended the support pin hydraulic cylinder 225 has been moved out of alignment with the hole 40 in the sliding drive unit and within the 16 perimeter of the protective frame 240.

18 By positioning the support pin hydraulic cylinder 225 and 226 within the perimeter of 19 protective frame they are protected from inipacts during the assembly or dismantling of the reel drive assembly and during the transportation of the sliding drive unit 24 to a new 21 location.

23 The positioning of the support pin hydraulic cylinder 225 and 226 in the storage state also 24 enable the sliding drive unit 24 to be positioned in the channels 18 and 20 of the towers 12 and 14 during the assembly of the reel drive assembly without the support pin hydraulic 26 units 225 and 226 being an obstacle and clashing with the tower modules 12 and 14.

28 In the operational position the support pin hydraulic cylinder 226 of hydraulic unit 36 is 29 aligned with the hole 41 in the sliding drive unit 24.

31 To move the support pin hydraulic cylinder 226 from a storage position to an operational 32 position the support pin hydraulic cylinder 226 is pivoted about the support member 222 33 toward the periphery of the sliding drive unit 24 and outside the perimeter of protective 34 frame 240. The support pin hydraulic cylinder 226 is pivoted about the support member 222 by actuating the positioning hydraulic cylinder 228 to a retracted position. As the 1 positioning hydraulic cylinder 228 retracts it pulls the support pin hydraulic cylinder 226 in 2 an anticlockwise direction about the support member 222. Once the positioning hydraulic 3 cylinder 228 has fully retracted the support pin hydraulic cylinder 226 is aligned with hole 4 41 in the sliding drive unit.

S

6 Furthermore, while in this example the support pin hydraulic cylinders are described as 7 being moved between a storage and operational position by the actuation of the 8 positioning hydraulic cylinder from an extended to a retracted position, this is merely an 9 example and any other manner of configuring the positioning hydraulic cylinder may be used. For example, the positioning hydraulic cylinders and suppoit pin hydraulic cylinders 11 may be configured such that the support pin hydraulic cylinders are moved between a 12 storage and operational position by the actuation of the positioning hydraulic cylinder from 13 a retracted to an extended position.

Figure 3 shows the crawler unit 22 of the reel hub adapter support module according to a 16 second embodiment of the invention, shown in an exploded schematic view. Hydraulic 17 units 30 and 32 are pivotally mounted to the crawler unit 22. The hydraulic unit 30 is 18 shown in an partially assembled schematic view and hydraulic unit 32 is shown in an 19 exploded schematic view. The hydraulic units 30 and 32 comprise support members 202 and 204, sleeve members 206 and 208, support pin hydraulic cylinders 210 and 212, and 21 positioning hydraulic cylinders 214 and 216 respectively.

23 The support members 202 and 204 are affixed to the crawler unit 22 and secure the 24 hydraulic units 30 and 32 to the crawler unit 22. The support member 202 and 204 are secured to the crawler unit using bolts. This is merely an example and any other manner of 26 affixing the support members 202 and 204 to the crawler unit 22 may be used, such as 27 welding if the material is suitable.

29 The sleeve members 206 and 208 are affixed to support pin hydraulic cylinder 210 and 212 respectively and sleeve members 206 and 208 are configured to be rotationally 31 mounted on support members 202 and 204. The sleeve members 206 and 208 may be 32 affixed by any suitable means such as bolts or welding. Alternatively the sleeve members 33 206 and 208 may be integrally formed with the housing of the support pin hydraulic 34 cylinders 210 and 212.

1 The positioning hydraulic cylinders 214 and 216 are pivotally attached to the sleeve 2 members 206 and 208 and the positioning hydraulic cylinders 214 and 216 are configured 3 to pivotally rotate the sleeve members 206 and 208 and the support pin hydraulic cylinders 4 210 and 212 during actuation of the positioning hydraulic cylinder 214 and 216.

S

6 A control unit (not shown) is connected to the support pin hydraulic cylinders 210 and 212 7 and the positioning hydraulic cylinders 214 and 216. The control unit is configured to 8 control the position of the support pin hydraulic cylinders 210 and 212 by controlling the 9 actuation of the positioning hydraulic cylinders 214 and 216. The control unit is also configured to control the actuation of the support pin hydraulic cylinder 210 and 212 to 11 extend or retract the support pins through the holes 38 and 39.

13 One benefit of using a control unit to control the support pin hydraulic cylinders 210 and 14 212 and the positioning hydraulic cylinders 214 and 216 is that it saves times during the assembly and disassembly of the reel drive assembly. A further benefit is that it enables 16 the hydraulic cylinders to be actuated remotely and ensures that workers are not put at 17 risk by having to move or operate heavy components at height.

19 The pivotal operation of support pin hydraulic cylinders 210 and 212 on the crawler unit 22 between a storage and operational position are equivalent to the support pin hydraulic 21 cylinders 225 and 226 as described in relation to Figures 2A and 2B above.

23 The assembly and use of the reel drive assembly will now be described using the 24 reference numbers of Figures 1A, iS, 2A, 2B and 3 above.

26 To assemble the reel drive assembly 10 the tower modules 12 and 14 are first moveably 27 mounted onto the base frame 16. The crawler unit 22 is positioned in the channels 18 and 28 20 of the towers 12 and 14. The support pin hydraulic units 30 and 32 on the crawler unit 29 are positioned in a storage position. In this storage position the support pin hydraulic unit 30 and 32 are not aligned with their corresponding holes 38 and 39 in the crawler unit but 31 are pivoted away from the periphery of the crawler unit. By positioning the support pin 32 hydraulic units 30 and 32 in a storage position it allows the crawler unit to be positioned in 33 the channels 18 and 20 of the tower modules 12 and 14 without the support pin hydraulic 34 units 30 and 32 clashing with the tower modules 12 and 14.

1 The crawler unit is moved downward along channels 18 and 20 in the gap between the 2 towers. Once the crawler unit 22 is located in the channels 18 and 20 in the gap between 3 the towers 12 and 14, the hydraulic units 30 and 32 are moved into an operational 4 position. The support pin hydraulic cylinders 210 and 212 of hydraulic units 30 and 32 are S moved toward the periphery of the crawler unit 22 until the support pin hydraulic cylinders 6 210 and 212 are aligned with the holes 38 and 39 of the crawler unit.

8 Hydraulic jacks 52 are mounted and secured on the crawler unit 22 using bolts. This is 9 merely an example and any other manner of affixing the hydraulic jacks 52 to the crawler unit 22 may be used, such as welding if the material is suitable.

12 The sliding drive unit 24 is positioned in the channels 18 and 20 of the towers 12 and 14.

13 The support pin hydraulic units 34 and 36 on the sliding drive unit are in their storage 14 position. In this storage position the support pin hydraulic unit 34 and 36 are not aligned with their corresponding holes 40 and 41 in the crawler unit but are pivoted away from the 16 periphery of the sliding drive unit and allow the sliding drive unit to be positioned in the 17 channels 18 and 20 of the towers 12 and 14 without the support pin hydraulic units 34 and 18 36 clashing with the towers 12 and 14. The sliding drive unit 24 is moved downwards 19 along channels 18 and 20 in the gap between the towers. Once the sliding drive unit is located in the channels 18 and 20 in the gap between the towers 12 and 14, the support 21 pin hydraulic cylinders 225 and 226 of the hydraulic units 34 and 36 are moved into an 22 operational position. The support pin hydraulic cylinders 225 and 226 are moved toward 23 the periphery of the sliding drive unit 24 until the support pins of the support pin hydraulic 24 units 34 and 36 are aligned with the holes 40 and 41 of the sliding drive unit.

26 The sliding drive unit 24 is moved downwards along channels 12 and 14 in the gap 27 between the tower modules 12 and 14 and is mounted on the hydraulic jacks 52. The 28 sliding drive unit 24 is secured on the hydraulic jacks 52 using bolts. This is merely an 29 example and any other manner of affixing the sliding drive unit 24 to the hydraulic jacks 52 may be used, such as welding if the material is suitable.

32 Finally a top tie bar 50 is located and secured in the channels 18 and 20 and bridges the 33 gap between the tower modules 12 and 14 to provide strength to the reel drive structure 34 and to limit the height reached by the sliding drive unit 24 in the channels 18 and 20.

1 In the above description the reel hub adapter support module is constructed during 2 assembly of the reel drive assembly. Alternatively the crawler unit 22, hydraulic jacks 52 3 and sliding drive unit may be assembled in to the reel hub adapter support module which 4 may be transported as prefabricated module and used in the assembly the reel drive S assembly.

7 During use the reel drive assembly 10 works in co-operation with a second reel drive 8 assembly (not shown). Each reel drive assembly engages one side of a reel drum. Each 9 reel drive assembly may have hydraulic cylinders to horizontally move the reel drive assembly to engage the reel drum. The crawler unit 22 and the sliding drive unit 24 of the 11 reel hub adapter support module are located in a first position to engage the reel (not 12 shown). Once the reel drum has been connected to the reel drive hub adapter 54 on the 13 hydraulic jacks 52 are actuated to move the sliding drive unit 24 upwards relative to the 14 crawler unit 22. Once the sliding drive unit 24, reel drive hub adapter 54 and connected reel drum have been lifted off a reel support cradle (not shown) to a desired height a 16 control unit may actuate the support pin hydraulic units 34 and 36 to extend support pins 17 thorough one of a series of holes 26a and 28a, then through holes 40 and 41 in the sliding 18 drive unit and finally through corresponding hole 26a and 28b of channels 18 and 20 to 19 secure the sliding drive unit 24 and the reel drive hub adapter 54 and attached reel drum in position.

22 In the event that the reel drum must be lifted higher than the height range of the hydraulic 23 jacks 52. The reel drum is first connected to the reel drive hub adapter 54 as described 24 above. The hydraulic jacks 52 are actuated to move the sliding drive unit 24 upwards relative to the crawler unit 22. Once the sliding drive unit 24 has been lifted to a desired 26 height or to the height range limit of the hydraulic jacks 52, a control unit may actuate the 27 support pin hydraulic units 34 and 36 of the sliding drive unit, to extend support pins 28 thorough one of a series of holes 26a and 28a, then through holes 40 and 41 in the sliding 29 drive unit 24 and finally through corresponding hole 26a and 28b of channels 18 and 20 to secure the sliding drive unit 24, reel drive hub adapter 54 and attached reel drum to the 31 tower modules 12 and 14.

33 The hydraulic jacks 52 are actuated to retract the jacks 52. By retracting the jacks the 34 crawler unit 24 is pulled upwards in channels 18 and 20 toward the sliding drive unit 24.

Once the hydraulic jacks have been returned to a fully retracted position a control unit (not 1 shown) may actuate the support pin hydraulic units 30 and 32 to extend support pins 2 thorough one of a series of holes 26a and 28a, then through holes 38 and 39 in the 3 crawler unit and finally through corresponding hole 26a and 28b of channels 18 and 20 to 4 secure the crawler unit in position to the tower modules 12 and 14.

S

6 The control unit may actuate the support pin hydraulic units 34 and 36 to retract the sliding 7 drive unit support pins to enable the sliding drive unit 24 and the reel drive hub adapter 54 8 and attached reel drum to be moved. The control unit may actuate the hydraulic jacks 52 9 to extend the jacks 52 and move the sliding drive unit 24 upwards in channel 18 and 20 relative to the secured crawler unit 22 until the sliding drive unit 24, reel drive hub adapter 11 54 and attached reel drum have been lifted to a desired height.

13 Once the desired height is reached the control unit may actuate the support pin hydraulic 14 units 34 and 36 to extend support pins thorough one of a series of holes 26a and 28a, then through holes 40 and 41 in the sliding drive unit and finally through corresponding hole 26a 16 and 28b of channels 18 and 20 to secure the sliding drive unit 24, reel drive hub adapter 17 54 and attached reel drum in position.

19 A modular reel drive assembly comprises two reel drive tower modules, a reel hub adapter and a reel hub adapter support module. The hub adapter support module comprises at 21 least one support pin which is configured to be movable between a storage position in 22 which the at least one support pin is not aligned with at least one aperture on the hub 23 adapter support module and an operational position in which the support pin is aligned 24 with at least one aperture on the hub adapter support module.

26 The invention offers a number of advantages with respect to conventional reel drive 27 assemblies. The modularity of the assembly enables individual modules to be readily 28 transported to an offshore or onshore location which enables a wide range of transport 29 options to be used and reduces transportation costs.

31 By providing reel drive assembly composed of prefabricated functional modules ready for 32 assembly, the modular assembly may facilitate easier and faster assembly, disassembly 33 and transportation of the reel drive assembly. The various modules of the assembly may 34 also be standardised to facilitate replacement or repair of individual modules.

1 A reel hub adapter support module which contains support pins configured to engage the 2 tower modules the load or weight of the reel may be transferred from the hub adapter 3 support module to the tower modules via the reel drive reel hub adapter support module 4 and support pins. This has the advantage that the vertical hydraulic jacks which are used S to lift and lower the reel drive reel hub are not subjected to prolonged exposure to heavy 6 reel loads and their working life may be extended.

8 The above invention may provide a robust, reliable and sturdy reel drive assembly. The 9 ability of the support pin to be moved between an operational position and a storage position may prevent the support pin from contacting, or being an obstacle to, other 11 components of the reel drive assembly. This may facilitate easy and rapid assembly and 12 disassembly of the reel drive assembly. It may also prevent the support pin being 13 damaged during assembly, disassembly or transport of the hub adapter support module.

Throughout the specification, unless the context demands otherwise, the terms comprise' 16 or include', or variations such as comprises' or comprising', includes' or including' will be 17 understood to imply the inclusion of a stated integer or group of integers, but not the 18 exclusion of any other integer or group of integers. Furthermore, relative terms such as 19 "up", "down", "top", "bottom", "upper", "lower", "upward", "downward", "horizontal", "vertical", "clockwise", "anticlockwise", "extend" , "retract" and the like are used herein to 21 indicate directions and locations as they apply to the appended drawings and will not be 22 construed as limiting the invention and features thereof to particular arrangements or 23 orientations.

The foregoing description of the invention has been presented for the purposes of 26 illustration and description and is not intended to be exhaustive or to limit the invention to 27 the precise form disclosed. The described embodiments were chosen and described in 28 order to best explain the principles of the invention and its practical application to thereby 29 enable others skilled in the art to best utilise the invention in various embodiments and with various modifications as are suited to the particular use contemplated. Therefore, 31 further modifications or improvements may be incorporated without departing from the 32 scope of the invention as defined by the appended claims.