Abstract:
A tool for opening an extruded profiled body of a power cord assembly device includes at least one pair of guides and at least one support, the pair of guides and the support being arranged in a frame, wherein a first guide of the pair of guides is arranged and shaped to releasably connect to the an interconnection area of the profiled body, and wherein a second guide of the pair of guides is arranged and shaped to releasably connect to a second interconnection area of the profiled body, said support being provided with a support member adapted to bear against a portion of the first wall opposite to a slit in the profiled body, the distance of the pair of guides relative to the support being such that the slit is widened in the area of the elongation of the profiled body where the tool is applied, thereby allowing a fibre optic cable to be introduced into the chamber.

Description:
TECHNICAL FIELD 
       [0001]    The present invention relates to a tool for opening an extruded profiled body of a power cord assembly device. It also relates to such an extruded profiled body and a method of introducing a fibre optical cable into a power cable assembly device. 
       BACKGROUND OF THE INVENTION 
       [0002]    When putting a fibre optic cable inside a power cord assembly device with the prior art tools, it has proven complicated to perform the operation, and is thus time consuming. 
         [0003]    A tool for opening an extruded profiled body of a power cord assembly device is known from SE-C-530 277. It is cumbersome to use, since the tool must be introduced into the same a slit of the power cord assembly where the fibre optic cable is to be introduced. 
       OBJECT OF THE INVENTION 
       [0004]    The object of the present invention is to improve the accessibility to a chamber of the profiled body, where the fibre optic cable is to be introduced. 
       SUMMARY OF THE INVENTION 
       [0005]    This has been solved by a tool for opening an extruded profiled body of a power cord assembly device as initially defined, which further comprises at least one pair of guide means and at least one support means, said pair of guide means and said support means being arranged in a frame, 
         [0000]    wherein a first guide means of said pair of guide means is arranged and shaped to releasably connect to the an interconnection area of the profiled body, and wherein a second guide means of said guide means is arranged and shaped to releasably connect to a second interconnection area of the profiled body, said support means being provided with a support member adapted to bear against a portion of the first wall opposite to the slit,
 
the distance of the guide means relative to the support means being such that the slit is widened in the area of the elongation of the profiled body where the tool is applied, hereby allowing a fibre optic cable to be introduced into the chamber.
 
         [0006]    Hereby, damages on the fibre optic cable are avoided. Furthermore, the introduction is made easier and faster and is thus less expensive. 
         [0007]    It has also been achieved by a power cable assembly of the initially defined kind, furthermore comprising a profiled body made of a polymer material and adapted to the cross-sectional shape and elongation of the power cable, said profiled body ( 4 ) comprising a chamber and a slit to said chamber, said chamber being adapted to receive a fibre optic cable via said slit. 
         [0008]    Hereby is achieved a profiled body suitable to be used in said tool 
         [0009]    It has furthermore been achieved by the method of the initially defined kind, including the steps of 
         [0000]    applying a pressure on the first wall substantially between the first and second end portions in a direction towards the slit;
 
applying a pressure on at least one of said second and third wall in a direction towards the first wall until the slit is wider than the diameter of the fibre optic cable; introducing the fibre optic cable through the slit into the chamber;
 
placing a guide means along the longitudinal extension of the slit, the guide means having an elongated guide member with two elongated sides, the lateral dimension of the elongated guide member being less that the diameter of the fibre optic cable;
 
controlling and guiding the fibre optic cable into the chamber via said slit by means of the guide member;
 
moving the profiled body in relation to the guide means together with the fibre optic cable;
 
moving the guide member out of the slit, the fibre optic cable ( 30 ) remaining inside said chamber.
 
         [0010]    Hereby, as safe method is defined for readily and easily introducing a fibre optic cable into the chamber of the profiled body. 
         [0011]    Suitably, said support means is rigidly connected to the frame, said guide means being movably connected to the frame by means of a helical joint, a gear rack joint or a sliding joint. 
         [0012]    Preferably, the first and second guide means are provided with friction reducing means adapted bear against and slide along the profiled body in the vicinity of the first interconnection area and the second interconnection area, respectively, for facilitating movement in the longitudinal extension of the profiled body. Suitably, the friction reducing means is a movable member. In particular the movable member is a ball, a roll or a wheel. 
         [0013]    Suitably, said support member of is provided with friction reducing means adapted bear against and slide along the outer surface of the first wall of the profiled body, for facilitating movement in the elongation of the profiled body. Preferably, the friction reducing means is a movable member. In particular, the movable member is a ball, a roll or a wheel. 
         [0014]    Preferably, the number of pairs of guide means is at least two, and the number of support members is at least two. In particular, the number of pairs of guide means is four, and the number of support members is at least four. Hereby, a controlled introduction of the fibre optic cable into the chamber is achieved. 
         [0015]    Suitably, a guide bar is provided for guiding the fibre optic cable into the slit, wherein the guide bar is provided with a guide member the transversal dimension of which being less than the width of the slit. Hereby, a controlled guiding of the optic fibre to remain in the chamber is achieved. 
         [0016]    Preferably, the guide bar is provided with a U-shaped guide member for controlling the introduction of the fibre optic cable into the slit, said U-shaped guide member being aligned with the elongated guide member, the guide bar being connected to the frame in front of and facing the guide members, the open part of the U-shaped guide member being turned towards at least one of the support members in such a way that the U-shaped guide member and the elongated guide member are facing the slit of a profiled body introduced between the support members and the guide means, the guide bar being positioned in the frame such that the U-shaped guide member is upstream the elongated guide bar in relation to the direction of movement of the profiled body. 
         [0017]    Hereby, a controlled introduction of the optic fibre cable into the chamber is achieved. 
     
    
     
       DRAWING SUMMARY 
         [0018]    In the following, the invention will be described in more detail by reference to the enclosed drawings, in which 
           [0019]      FIG. 1  is a cross-section of a power cable assembly device; 
           [0020]      FIG. 2  is a cross-section of a power cable provided with the power cable assembly device shown in  FIG. 1 ; 
           [0021]      FIG. 3  is a cross-section of an alternative power cable assembly device; 
           [0022]      FIGS. 4   a - 4   d  illustrate schematically a tool for enabling introduction of a fibre optic cable inside the power cable assembly device shown in  FIGS. 1-3 ; and 
           [0023]      FIGS. 5-8  illustrate schematically alternative tools for enabling introduction of a fibre optic cable inside the power cable assembly device shown in  FIGS. 1-3 ; 
           [0024]      FIG. 9   a - 9   b  illustrates an alternative tool and a combined such tool; 
           [0025]      FIGS. 10   a - 10   d  illustrate an alternative combined tool; and 
           [0026]      FIG. 11  illustrates a set up of tools in the assembly of a power cable. 
       
    
    
     DETAILED DESCRIPTION 
       [0027]      FIG. 1  shows a power cable assembly device  2  in the form of an extruded profiled body  4  with a first wall  6 , a second wall  8 , a third wall  10 . The first wall  6  is convex while the second and third walls  8 ,  10  are concave, the reason for which will be discussed farther below. The cross-section of the profiled body has first and second end portions  5   a ,  5   b , opposite to one another. 
         [0028]    The cross-section of the first wall  6  of has a first end  6   a  and a second end  6   b . Likewise, the second wall  8  has a first end  8   a  and a second end  8   b , and the third wall  10  has a first end  10   a  and a second end  10   b . The first end  6   a  of the first wall  6  is connected to the first end  8   a  of the second wall at the first end  5   a  of the profiled body, while the second end  6   b  of the first wall  6  is connected to the first end  10   a  of the third wall  10  at the second end  5   b  of the profiled body. 
         [0029]    The second end  8   b  of the second wall  8  continues to a first angled transition  12   a  and further to a first radial transition  14   a . Likewise, the second end  10   b  of the third wall  10  continues to a second angled transition  12   b  and further to a second radial transition  14   b.    
         [0030]    The first and second angled transitions  12   a ,  12   b  are converging towards the first and second radial transitions  14   a ,  14   b , the latter being substantially parallel to one another and thus substantially radial to the convex first wall  6 . The first and second radial transitions  14   a ,  14   b  are arranged at a distance from one another, defining an open slit  15 . 
         [0031]    Inside the profiled body  4 , a chamber  16  defined by a substantially annular wall  18  is arranged. The annular wall  18  extends from the first radial transition  14   a  to the second radial transition  14   b . A pair of reinforcement members  20   a ,  20   b  are arranged between the annular wall  18  and the first wall  6 . 
         [0032]    The assembly device  2  is made by extrusion of a polymer material, such as PE (e.g. MDPE or HDPE) or PVC and may have a length of several kilometres. 
         [0033]    At least the second and third walls  8 ,  10  have a thickness in the range 2-6 mm, more preferably 2.5-4 mm, most preferably 3 mm, and thin layer  21  of the semi-conductive material is in the range 0.01-0.5 mm, more preferably 0.05-0.35 mm, even more preferably 0.1-0.3 mm, even more preferably 0.15-0.25 mm, most preferably 0.2 mm. 
         [0034]      FIG. 2  shows the interior of a power cable  22  provided with three neighbouring first, second and third power cores  24   a ,  24   b ,  24   c , each provided—from the centre to the periphery—with a conductor  25   a , a first second semi-conductive layer  25   b , insulation  25   c , a second semi-conductive layer  25   d , a layer of swelling material  25   e , a metal screen  25   f  made of led and a third semi-conductive mantle  25   g.    
         [0035]    The first and second semi-conductive layers  25   b ,  25   d  form a smooth surface which controls the electric field strength. The swelling material  25   e  tightens against water in case the led screen  25   f  would start leaking. 
         [0036]    Each power core  24   a ,  24   b ,  24   c  has a peripheral point  26   a ,  26   b ,  26   c  in relation to the diametrical centre  19  of the power cable  22 , i.e. in the central space  27   d . The three peripheral points  26   a ,  26   b ,  26   c  form together in relation to the centre point  19  an imaginary circle  26   d.    
         [0037]    The first and second power cores  24   a ,  24   b  touch one another at a contact point  23   a  and define a peripheral space  27   a  together with the imaginary circle  26   d . Likewise, the second and third power cores  24   b ,  24   c  have a contact point  23   b  and define a second peripheral space  27   b  together with the imaginary circle  26   d  and the third and first power cores  24   c  and  24   a  have a contact point  23   c  and define a third peripheral space  27   c  together with the imaginary circle  26   d . The first, second and third power cores  24   a ,  24   b ,  24   c  define between the contact points  23   a ,  23   b ,  23   c  a central space  27   d.    
         [0038]    In the peripheral space  27   a , a first assembly device  2   a  is provided. Likewise, a second assembly device  2   b  is arranged in the second peripheral space  27   b , and a third assembly device  2   c  is arranged in the third peripheral space  27   c.    
         [0039]    The power cable is provided with a jacket  28  to keep the power cores  24   a ,  24   b ,  24   c  and the assembly devices  2   a ,  2   b ,  2   c  together as one unit and to keep the circular cylindrical shape and mechanical protection. The jacket  28  comprises—from the periphery towards the centre point  19 —two layers  29   a  of yarn made of polypropylene (PP), a first steel wire armour layer  29   b , a first soft layer  29   c  of laying bands, a second steel wire armour layer  29   d , a second soft layer  29   e  of laying bands. 
         [0040]    As can be understood from  FIG. 2 , the concavity of the outer surface of the second and third walls  8 ,  10  of each assembly device  2   a ,  2   b ,  2   c  depends on the diameter of the power cores  24   a ,  24   b ,  24   c . In the same manner, the convexity of the outer surface of the first wall  6  of each assembly device  2   a ,  2   b ,  2   c  depends on the radius of curvature of the imaginary circle  26   d.    
         [0041]    An elongated a fibre optic cable  30  comprises a fibre optic wave conductor  31 , i.e. a bundle of optical fibres inside a metal tubing  32   a  together with a mass  32   b , such as a gel. The metal tubing  32   a  is covered with a layer of semi-conductive layer  33 . 
         [0042]      FIG. 3  shows another assembly device  2  made by extrusion of a polymer material, such as PE (e.g. MDPE or HDPE) or PVC. 
         [0043]    Also in this embodiment, the first wall  6  of the profiled body  4  is convex and has first and second ends  6   a ,  6   b ; the second wall  8  is concave and has first and second ends  8   a ,  8   b ; and the third wall  10  is concave and has first and second ends  10   a ,  10   b . The first, second and third walls are connected to one another as described in connection with  FIG. 1  above. 
         [0044]    However according to this embodiment, the second end  8   b  of the second wall  8  continues to a first curved transition  13   a  and further to a first radial transition  14   a . Likewise, the second end  10   b  of the third wall  10  continues to a second curved transition  13   b  and further to a second radial transition  14   b . Also in this embodiment the first and second radial transitions  14   a ,  14   b  are substantially parallel to one another and are thus substantially radial to the convex first wall  6 . 
         [0045]    However, according to this embodiment, the first and second radial transitions  14   a ,  14   b  are arranged without distance from one another, i.e. the slit  15  is closed, even though the slit for clarity reasons have been shown to be somewhat open. 
         [0046]    Also in this embodiment, the annular wall  18  defining the chamber  16  extends from the first radial transition  14   a  to the second radial transition  14   b . However, no further reinforcement members are needed. Instead, the annual wall  18  is partly constituted by the first wall  6 . 
         [0047]      FIG. 4   a  shows a tool  39  and a profiled body  4  of the kind shown in  FIG. 1 . The tool  39  has a pair of arms  40 ,  42  connected at one end  40   a ,  42   a  by means of a hinge  43 , respectively, to an interconnection means  44 . The opposite ends  40   b ,  42   b  of the arms  40 ,  42  are provided with guide means  41  in the form of hook members shaped to grasp about the edges  5   a ,  5   b  of the profile  4  of the power cable assembly device  2 . 
         [0048]    Centrally between the hinges  43 , the interconnection means  44  is provided with a support means  46  via a helical joint  47 . The support means  46  is at one end provided with a support portion or member  48  and at the other end with a nut or turning handle  49  for manual operation of the support means  46 . 
         [0049]    The support means  46  may instead be actuated by e.g. an electric step motor. 
         [0050]    The withdrawal tool  39  is now ready to be moved along the longitudinal extension of the profiled body  4 , in order to open the slit  15  for introduction of the fibre optic cable  30  into the chamber  16  via the slit. 
         [0051]    In order to allow such movement, the material of the whole of or part of the tool  39  is preferably, but not necessarily, made of a low friction material. 
         [0052]    As shown in  FIG. 4   b , support portion  48  of the support means  46  and the guide means  41  are provided with a friction reducing means  50 , in the form of a ball bearing  52  comprising a single ball, in order to allow the withdrawal tool  39  to be moved along the profiled body  4 . 
         [0053]    Of course, the ball bearing  52  may comprise more than one ball. 
         [0054]    Even though  FIG. 4   b  shows the tool  39  together with a profiled body  4  of the kind shown in  FIG. 3 , it is to be understood that the profiled body  4  of the kind shown in  FIG. 1  could be used. Likewise, the profiled body  4  of the kind shown in  FIG. 3  could be used together with the tool of  FIG. 4   a.    
         [0055]      FIG. 4   c  shows an alternative friction reducing means  50  in the form of a roller bearing  54 , having a single roll or wheel. 
         [0056]    Of course, the roller bearing  52  may instead comprise more than one roller or wheel. 
         [0057]    The profiled body  4  indicated with broken lines may be of the kind shown in  FIG. 1  or  3  or of any other kind, having substantially the same shape. 
         [0058]      FIG. 4   d  shows an alternative friction reducing means  50  in the form of a low friction material  56 , such as PTFE. 
         [0059]    It should be noted that the guide means  41  may be provided with one kind of friction reducing means  50 , as shown in  FIGS. 4   b - 4   d , or no friction reducing means shown in  FIG. 4   a , while the support means  46  is provided with none or another kind of friction reducing means shown in  FIGS. 4   a - 4   d.    
         [0060]      FIG. 5  shows a variant of the tool  39 , according to which the support means  46  is connected to the interconnection means  44  via a gear rack joint  58 , while the pair of arms  40 ,  42  are connected to the interconnection means  44  by means of hinges  43 . 
         [0061]    The first and second arms  40 ,  42  are each provided with guide means  41  in the form of a guide wheel  41   a ,  41   b  connected via an axle  76 . The support means  46  is provided with a support member  48  in the form of a double encapsulated ball-bearing  54  connected via an axle  72  to a U-shaped bearing support  73 . 
         [0062]    The support means  46  is actuated by a power source  60 , e.g. an electric step motor, a solenoid or a hydraulic or pneumatic cylinder, such that the support means is allowed to move in its longitudinal direction. 
         [0063]    Of course, the support means  46  may instead be manually actuated. 
         [0064]    In this variant, the guide wheels  41   a ,  41   b  of the arms  40 ,  42  are positioned under the first and second ends  5   a ,  5   b  of the profiled body  4  by turning one or two of the arms  40 ,  42  about the respective hinge  43 . 
         [0065]      FIG. 6  shows a variant of the tool  39 , according to which the first and second arms  40 ,  42  are connected to the interconnection means  44  via helical joints  62 , while the support means  46  is rigidly connected to the interconnection means  44 . 
         [0066]    The first and second arms  40 ,  42  are each provided with a guide wheel  41   a ,  41   b  via an axle  76 , and the support means  46  in the form of a U-shaped bearing support  73  provided with an encapsulated ball-bearing  54  via an axle  72 . 
         [0067]    The support means  46  is actuated by a power source  60 , e.g. an electric step motor, such that the arms  40   a ,  40   b  is allowed to move in their longitudinal direction. Of course, the arms could instead be turned manually. 
         [0068]    In this variant, the guide wheels  41   a ,  41   b  of the arms  40 ,  42  are positioned under the first and second ends  5   a ,  5   b  of the profiled body  4  by turning one or two of the arms  40 ,  42 . 
         [0069]      FIG. 7  shows a further variant of the tool  39 , according to which the support means  46  as well as the arms  40 ,  42  are rigidly connected to the interconnection means  44 , while the guide means  41  in the form of hooks are pivotably connected to the arms  40 ,  42  about hinges  68  and further provided with a locking means  70  for facilitating grasping of the guide means  41  behind the edges  5   a ,  5   b  of the profiled body  4 . 
         [0070]    Of course, the guide means  41  and the support means  46  may be provided with no friction reducing means  50  as shown in  FIG. 4   a , or with any other kind, e.g. as shown in  FIGS. 4   b  and  4   c , or a combination thereof, as explained above in connection with  FIGS. 4   a - 4   d.    
         [0071]      FIG. 8  shows a further variant of the tool  39 , according to which the arms  40 ,  42  are rigidly connected to the interconnection means  44 , while the support means  46  is helically movable in relation to the interconnection means  44 . In this case, the edges  5   a ,  5   b  of the profiled body  4  are manually positioned against the support member  48  and behind the guide means  41 , or by means of a separate tool. 
         [0072]    The different friction reducing means  50  shown in  FIGS. 4   b - 4   d  or any combination thereof, are applicable also in this case. 
         [0073]      FIG. 9   a  illustrates yet another variant of the withdrawing tool  39 , according to which the support means  46  as well as the arms  40 ,  42  are rigidly connected to the interconnection means  44 . Also in this case, the edges  5   a ,  5   b  of the profiled body  4  are manually positioned against the support member  48  and behind the support members, or by means of a separate tool. 
         [0074]      FIG. 9   b  shows a tool  39  comprising a combination of three tools of the kind shown in  FIG. 9   a . By means of a frame  74 , the three tools are interconnected to one combined tool. In this variant, the support members  46   a ,  46   b ,  46   c  having different the lengths, i.e. l 1 &lt;l 2 &lt;l 3 . 
         [0075]    When introducing the profiled body from the left to the right in tool  39  of  FIG. 9   b , the slit  15  will be gradually opened by the support members, and will thus allow a fibre optic cable  30  to be introduced into the chamber  16  without difficulty. The fibre optic cable (not shown in  FIG. 9   b ) could be introduced to the right in the figure, either by hand or by means of a tool. It should be noted that the tool  30  could be turned upside down. In that case, gravity could be used for introducing the fibre optic cable into the rightmost tool. 
         [0076]    It should be noted that the different tools  39  and friction reducing means  50  shown in  FIGS. 4   b - 4   d ,  5  and  6  or any combination thereof, are applicable in the tool of  FIG. 9   b    
         [0077]      FIG. 10   a  shows a further variant of the tool  39  provided with support means  46  comprising four support members  48  in the form of double encapsulated ball-bearings  54 . Each ball-bearing  54  is rotatably connected via an axle  72  to a U-shaped bearing support  73  across an axis through the aligned ball-bearings  54 . The tool  39  is furthermore provided with guide means in the form of four pairs of guide wheels  41   a ,  41   b  of encapsulated needle bearings  55   a ,  55   b , each rotatable about an axle  76 , said axle  76  being parallel to the axles  72  of the ball-bearings  54 . 
         [0078]    In order to position the four ball-bearings  54  in relation to one another and in relation to the guide wheels, the tool  39  comprises a grid of parallel plates  75  of a first frame part  74   a  of an interconnection means  44  in the form of a frame  74 , together forming a grid. Of course, the grid of parallel plates  75  could instead be constituted by a single plate. 
         [0079]    The frame further comprises a pair of side walls  74   b ,  74   c , connected perpendicularly to the first frame part  74   a  by screws  90 . The side walls  74   b ,  74   c  are furthermore adjustably connected to a frame support  74   f  by screws  94  in a row of holes  96 . In this manner, the first frame part  74   a  can be moved in a direction across the row of holes  96 . Thus, the position of a plane through the axles  72  of the ball-bearings  54  can be adjusted in relation to the guide wheels  41   a ,  41   b , depending on the thickness of the profiled body  4 . 
         [0080]    The frame support  74   f  is provided with an entrance opening  92  for introduction of the profiled body  4  into the tool  39 . An access slot  93  in the frame support  74   e  allows for taking the tool  39  apart even if the profiled body  4  is still inside the tool  39 . 
         [0081]    The frame  74  further comprises a pair of plates  74   d ,  74   e  each connected to extension plates  74   g ,  74   h . The plates  74   d ,  74   e  are each provided with a slot  97   a ,  97   b  in their opposing ends (the rear ends being hidden) for adjustable connection with screws  98   a ,  98   b  to a pair of rows of holes  99  in the frame support  74   f . Hereby, the frame  74  is adjusted for the lateral dimension of the profiled body  4 . 
         [0082]    A pair of reinforcement members  74   i ,  74   k  are each provided with four sets of screws  80   a . Each guide wheel  41   a ,  41   b  is independently movable in a slot  78  in the plates  74   d ,  74   e  towards a plane through the axles  72  of the ball-bearings  54 , and is adjustable in the slot  78  by means of a corresponding set screw  80   a . After performed adjustment, the position of the guide wheel  41   a  or  41   b  is fixed by means of a lock nut  80   b.    
         [0083]    The set of screws  80   a  and lock nuts  80   b  are adjusted in such a way that each guide wheel  41   a ,  41   b  is positioned at a predetermined distance relative to the support member  48 . In this way, it is possible to adjust each pairs of guide wheels  41   a ,  41   b  relative to the other pairs of guide wheels  41   a ,  41   b  to bear against the edges of  5   a ,  5   b  of the profiled body  4 . By said adjustment, the slit  15  will be widened and thus opened at a predetermined position between the first pair of wheels and the fourth pair of wheels. 
         [0084]    In  FIG. 10   b  is shown an elongated guide beam  82  having lateral sides  82   a ,  82   b , a guide side  82   c  and a connection side  82   d  (hidden). The guide beam  82  is to be arranged opposite to and facing the support members  48 . The guide beam  82  is provided with an elongated guide member  84  to be positioned parallel to a plane through the axles  72  of the ball-bearings  54 , by screws  83   a  in elongated slits  83   b ,  83   c  in two pairs of arms  83   d ,  83   e  connected to the side walls  74   b ,  74   c  of the frame  74 . 
         [0085]    In  FIG. 10   c  is shown the guide beam  82  from the opposite direction. At a first end  82   e  of the guide beam, an elongated U-shaped guide member  85  is provided, while at a second end  82   f , and on the same longitudinal side  82   c , an elongated guide member  84  is provided. Between the elongated guide, the U-shaped member  85  and the elongated guide member  84 , a transition section  86   a  is provided between first and second sections  86   b ,  86   c . In the transition section  86   a , the lateral extension of the elongated U-shaped member  85 , measured from the connection side  82   d  is reduced in a longitudinal direction from the first section  86   b  towards the elongated guide member  84 . Furthermore, in the transition section  86   a  the lateral extension of the elongated member  84 , measured from the connection side  82   d  is reduced in a longitudinal direction from the second section  86   c  towards the U-shaped member  85 . 
         [0086]    In  FIG. 10   d  is shown that the fibre optic cable  30  is controlled to keep a longitudinal orientation relative to the slit  15  of the profiled body by the U-shaped guide member  85  at the first section  86   b  extending from the first end  82   e  to the transition section  86   a . It also shows that the fibre optic cable is introduced into the profiled body  4  via slit  15  by the transition section  86   a  of the diminishing elongated U-shaped guide member  85  and the raising elongated guide member  84 , and that the fibre optic cable  30  is guided to stay inside the chamber by the elongated guide member  84  in the section  86   c  extending from the transition section  86   a  towards the second end  82   f.    
         [0087]      FIG. 11  shows the first step of assembly of the power cable. 
         [0088]    First, the power cores  24   a ,  24   b ,  24   c  are held 120° in relation to one another by means of not shown equipment in the periphery of an imaginary circle  100 . 
         [0089]    Then, between the power cores  24   a ,  24   b ,  24   c  three tools  39   a ,  39   b ,  39   c  of the kind shown in  FIGS. 10   a - c , are arranged 120° in relation to one another in the periphery of the imaginary circle  100  in relation to and between the power cores  24   a ,  24   b ,  24   c.    
         [0090]    As explained above in connection with  FIG. 10   a , the frame  74  is adjusted for the power cable assembly device  2  to be used, i.e. first frame part  74   a  is mounted in predetermined holes of the frame support  74   f , and the pair of plates  74   d ,  74   e  are mounted in predetermined holes  99 . 
         [0091]    In each tool  39   a ,  39   b ,  39   c , a profiled body  4  is positioned between the four pairs of guide wheels  41   a ,  41   b , starting from the level of frame support  74   f  (i.e. seen from the lower part in  FIG. 10   a ) and the four support members  48 . 
         [0092]    The screws  80   a  of the first, second and third pairs of wheels  41   a ,  41   b , counted from the frame support  74   f , are adjusted such that the slit  15  of the profiled body  4  of  FIG. 1  or  FIG. 3  is opened somewhat more than the diameter of the fibre optic cable  30 , while the fourth pair of wheels  41   a ,  41   b  are adjusted to allow the slit  15  to be smaller, such that the width of the slit is less than the diameter of the fibre optic cable  30 , but wider than the transversal dimension of the guide member  84 . 
         [0093]    A fibre optic cable  30  is now introduced via the entrance opening  92  of the frame  74  (cf.  FIG. 10   a ) in each profiled body  30  mounted in the tools  39   a ,  39   b ,  39   c , and is introduced into the chamber  16  and through the end of the profiled body  4  and temporarily fixed inside the profiled body upon start. 
         [0094]    A guide beam  82  of the kind described above is then mounted. 
         [0095]    Each profiled body  4  is collected together with the power cores  24   a ,  24   b ,  24   c  at a distance from the tools  39   a ,  39   b ,  39   c  (above the tools as seen in  FIG. 10   a  and  FIG. 11 ) and are assembled while pulling the profiled bodies  4  and power cores  24   a ,  24   b ,  24   c  away from the tools  39   a ,  39   b ,  39   c.    
         [0096]    During this movement, the slit  15  is opened by the support members  48  and the guide members  41 , while fibre optic cables  30  are guided into the chamber by the guide beam  82 . 
         [0097]    It should also be noted that the tools  39   a ,  39   b ,  39   c  may be mounted for introduction of the fibre optic cable  30  through the entrance opening  92  of the frame  74  horizontally or vertically. 
         [0098]    In case of high torsional stiffness of the profiled body  4 , a higher pressure may have to be applied on one side  8  than the other  10  by the guide wheels  41   a ,  41   b , or a pressure may even only be applied on one side  8  by one or more guide wheels  41   a , while a lower or even no pressure may be applied on the other side  10  by one or more guide wheels  41   b.    
         [0099]    In  FIG. 11 , the simultaneous introduction of a fibre optic cable  30  into three power cable assembly devices  2  of a power cable  22 . However, in case only one or two fibre optic cables  30  are to be introduced into the power cable, the tools  39   a ,  39   b ,  39   c  will still be used as guide tools for the assembly of the cores  24   a ,  24   b ,  24   c  and the power cable assembly devices. The support members  48  and guide wheels  41   a ,  41   b  of the tool or tools used only as guide tools will then preferably be adjusted in such a way that the slit of such profiled bodies  4  will not be opened. 
         [0100]    It should be noted that the guide beam  82  could instead be divided into three different items, corresponding to the sections  86   a ,  86   b  and  86   c . Alternatively, the first and second sections  86   b ,  86   c  could instead be a pair of wheels with a peripheral shape corresponding to the cross-section of the first and second sections  86   b ,  86   c , respectively. 
         [0101]    It should be noted that the encapsulated ball-bearing  54  could be exchanged to an encapsulated roller bearing, having circular cylindrical rollers, or to plain bearings. Likewise, the encapsulated needle-bearings could be exchanged to small ball-bearings or plain bearings. Of course the bearings could also be non-encapsulated.