DE2043269A1 - Cable laying device - Google Patents

Description

DIPLu-ING. H. MARSCH * Düsseldorf, DIPL.-ING. K. SPARING lindbmannsthassb ^ iQ Α 3? R 9 POST BOX 4047 * W * T V *. «V PATENTANWÄLTE TBLBFON (Oalll «73940

1/528

Description of the patent application

The Post Office, 23 Howland Street, London, WlP 6HQ / England

concerning: ™

"Cable laying device ¹¹

The invention relates to a device for laying out or pulling up cables, in particular Underwater cables with amplifiers or connectors switched on. Such a device is often called Denotes cable laying device, and this term shall be used hereinafter.

Difficulties arise when laying cables with amplifiers or connectors if the amplifier or junction box is rigid and has an outside diameter which is considerably larger than that of the cable itself. Known methods of overcoming these difficulties, for example by forming the cable with a "loop", in which the amplifier or the connector are located, bridging the loop by a hawser / and providing a Suspension guide or the like for conveying the amplifier alongside the cable transport reels are not entirely satisfactory since facilities must be used here which have multiple kinks in the cable above and below

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successive transport reels of the cable laying device must take place, which is undesirable especially when the cable to be laid has a relatively large diameter. Modern telecommunications systems also often operate at very high frequencies, so that many amplifiers have to be provided at a relatively short distance over a given cable length with the result that with the help of the known cable laying devices Laying out the cable becomes difficult and slow, with the cable-laying ship being frequently stopped as soon as an amplifier has to be transported, and that is always the case, especially on the high seas Risk must be accepted that changes in tension in the cable cause damage to the cable itself or the amplifier device.

The object of the present invention is to provide a device for laying out or pulling up cables, at which avoids the difficulties mentioned above.

According to the invention there is provided an apparatus for laying out or retrieving cables with means for applying a pull on the cable proposed, which is characterized according to the invention by a roller, a surface cooperating with this, mounting devices for both the roller as well as the surface and resilient biasing means for pressing the roller and surface into contact with the Surface of the cable to be laid out or recovered and by means for operating the pulley such that it transfers tension to the cable. The interacting with the roller surface can consist of one or several other roles exist. The further roller or one or more of these further rollers can also be designed in such a way that they apply tensile stress to the cable capital. Further roles that are necessary for daa applying a

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Tension formed on the cable can be arranged in tandem behind the first pulley. The device can further comprise guide devices by means of which the cable is positioned relative to the bolts.

An embodiment of the cable laying device according to the invention comprises a guide device consisting of groups of guide rollers and rollers for applying the Tension, which are arranged in tandem. These pulling wheels have hydraulic power and are fitted with pneumatic tires | and arranged in pairs such that the wheels of a pair are in contact with the cable circumference at opposite one another Kick ends of a vertical diameter of the same. Each pulling wheel is preferably provided with an associated disc brake. The guide rollers are arranged similarly, but with their axes at right angles to the axes of the pulling wheels. Guide rollers are arranged at the inlet and outlet of the device, and there are a number of pairs of pulling wheels provided, wherein two pairs of guide rollers are each arranged between successive pairs of pulling wheels. The rollers and wheels are mounted on a common base plate.

If a cable equipped with amplifiers or connecting pieces is conveyed by means of the device, so causes the inlet of the paragraph of the front contour of an amplifier or connection housing that that in the direction of movement of the cable's first pair of guide rollers is laterally displaced so that the rollers are in contact with the surface of the Amplifier or junction box connect to the amplifier to center with respect to the pulling wheels; Then when the amplifier or the connector is advanced, dfe steps forward lying contour of the same in contact with the train wheels

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and offset them vertically in such a way that the driving or braking action of these wheels is transferred from the cable to the surface the advancing amplifier or junction box is transmitted; similarly are the train wheels The following guide rollers are offset when they are removed from the front end contour of the moving amplifier or connection housing be traversed, so that a further stabilization and centering of the same results when passing through the device. As soon as the rear end contour of the amplifier or connection housing passes through the guide rollers and pulling wheels, sweep these automatically return to their original position according to the diameter of the cable to be conveyed.

So that the pull wheels can move in the vertical direction, they are mounted on swivel arms, which are each attached to an upstanding part of the base plate and so that a symmetrical movement of the two wheels of a pair with respect to the cable path axis results, the swivel arms have the shape of crank levers, which have pivot bearings at their inflection points, while their free ends are mechanically coupled. So that the pulling wheels exert a Reibungsanpreßdv ^ back on the cables to be conveyed, the lever arms which carry the pulling wheels are coupled with hydraulic rams which exert a pull on the lever arms in such a way that the pulling wheels are carried by them inwards in the direction of the Cable path axis can be drawn. The hydraulic rams can be of any conventional type , but it is preferred to provide them with a presettable pressure relief valve , whereby the contact pressure of the pulling wheels on the cable casing can be adjusted to a desired value, but at the same time the outward displacement of the arms is made possible if the train wheels are traversed by an amplifier housing.

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For the lateral deflection of the guide rollers, they are mounted on swivel lever parts, each of which has one end are provided with guide rollers, while the other ends are coupled by means of a toothed segment gear such that the guide rollers also move symmetrically with respect to the cable path axis. Furthermore, the levers are provided with spring preloading devices so as to mechanically adjust the rollers to push inwards in the direction of the cable path axis and thus to exert a suitable positioning force on the cable, which is promoted so as to maintain its position centrically with respect to the periphery of the associated pair of pulling wheels obtained, but the rollers are pivoted outward can if the contour of an amplifier or connection housing passes through.

A second embodiment of the device according to the invention is generally similar to the first embodiment, however, the guide roller assemblies of the first embodiment are there replaced by further pairs of pull wheels which are arranged horizontally.

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The invention is to be explained in more detail below with reference to the accompanying drawings, which illustrate two exemplary embodiments of the subject matter of the application.

Fig. 1 shows in perspective a cable laying device according to the invention,

FIGS. 2 to 4 show details of the cable laying device according to FIG. 1, FIG. 3 being a section according to Line III-III in Fig. 2 is omitted some parts of the device for clarity of illustration,

Figures 5 and 6 show top and side views, respectively, of a

modified guide roller arrangement for a cable laying device according to FIGS. 1 to 4,

Fig. 7 shows the outline representation of a pull wheel arrangement with a disc brake,

Fig. 8 shows a partial section to illustrate the Build up for the train wheel hub with the disc brake,

9 to 13 show details of a frame structure with structures for a multi-module table device according to the previous figures,

14 shows in outline a plan view of a

second embodiment of the cable laying device according to the invention,

15 aelgt in details a section according to Line A-A in Fig. 14, and

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16 and 17 show a schematic representation Details of a hydraulic system that works for both the first and the second illustrated embodiment of the subject invention is applicable.

It should be noted that insignificant details of construction, such as bolts, nuts and the like, are generally not shown in the drawings and that the presence of the cable is only indicated in FIG. Λ

The following description relates to the first embodiment, explaining various possible modifications. This is followed by a detailed explanation of the frame structure for the first embodiment and a description of a second embodiment of FIG Subject of the invention. Finally, a hydraulic system that can be used for both exemplary embodiments will be explained in detail.

1 shows a perspective view of a first cable laying device according to the invention for a cable 8. The device is on a rectangular base frame 1 "

constructed and comprises four successive pulling wheels with guide rollers and with end elements 9,10. It is said below only one train wheel guide roller arrangement will be described in detail, since the other three are constructed exactly alike.

Each pulling wheel guide roller arrangement comprises a pair of cable pulling wheels 2,3 and two pairs of guide rollers 4,5 and 6.7. The cable pulleys are jwells between two pairs of guide rollers, and the cable pulleys are with their axes arranged vertically at a right angle to the axis of the cable 8 and on the field side thereof, while

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the guide rollers of each pair are arranged with their axes horizontally at right angles to the axis of the Cable 8 and also on both sides of the same.

In Fig. 1, 2 and 3, the arrangement of the pulling wheels and their control mechanism is shown and is intended below explained. Each of the pulling wheels 2, 3 is bolted to an associated hub part, each with the rotor shaft a hydraulic motor 12 is keyed (Fig. 1), which rotor shaft has either a forward or a reverse drive action can exert or act as a pump when the rotor is driven by the cable, with a desired braking effect is exercised. Each of the pulling wheels is further provided with an air-filled tire 13, which is in operation of the cable laying device resiliently encompasses the cable 8 or an amplifier housing (not shown), so that there is a risk of damage of the cable or amplifier is minimized during laying. The hydraulic motors 12 are attached to mounting plates 14 (see Fig. 1) which are integrally formed with the horizontal arms 15, 16 (see Fig. 2) associated crank levers 17 and 18. Each of these crank levers is at its angular point by means of associated pins 19, 20 (Fig. 3) hinged, which pins are arranged on a mounting column 21 at a distance from one another. Have the mounting pillars the shape of hollow rectangular boxes. They are connected to the base frame by a welded construction with ribs 22 and further connected to one another by retaining struts 38 which extend horizontally between adjacent mounting columns and with these Connected via a welded rib construction are about the middle of the length of the mounting pillars. Vertical arms 23.24 the crank levers 17, 18 are arranged so that they overlap one another over part of their length, and they are on this Place pivotally coupled together by means of a

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Sliding block bearing 25.

Fig. 3 illustrates in a partial sectional view a detail of a mounting column 21 and shows in detail the Construction of the pivot point bearing of the two crank levers and the vertical arm sliding block bearing. It can be seen that the pivot point bearing comprises pins 19, 20, which by means of hub parts are arranged in the mounting column; the hub portions 26 extend transversely through the hollow interior of the column and protrude their rear side protrudes. These hub parts are welded to the front of the mounting column. Each journal has a reduced diameter portion that extends over the rear end of the hub part 26 protrudes and is welded to an annular anchor plate 27, which means Bolt 29 is screwed to a support ring 28, which in turn is welded to the rear of the mounting column. A hub is welded into an opening near the kink point of each crank arm. The hub is provided with a bush 31 so that the crank levers can be pivoted freely rotatably on the bearing journals 19, 20. An end cap 32 is connected to the front of each journal and secures the crank arms in place.

So that the vertical arms of the crank levers can overlap one another, the lever arm standing upwards has 24 a stepped shape so that its front face is the back face of the downwardly projecting lever arm 23 is opposite; this training is constructed so that an extension part 33 with the back of the arm 24, which is itself previously shorter than the arm 23. The extension 33 has an elongated rectangular through opening 34, and about The entire depth of this opening is a rectangular phosphor-Bronse bearing block 25, the width of which has been selected in this way is that there is a sliding fit in the rectangular opening, while its length is slightly less than the length of the opening;

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accordingly, the bearing block 25 has a limited free space Longitudinal freedom of movement within the opening. The bearing block is held in the opening by holding plates 35, as shown in the drawing. A bearing pin 36 is attached to the corresponding point of the lever arm 23 and protrudes through the bearing block 25, while the whole assembly is held together is secured by a locking washer with a locking pin as shown.

The method of bearing connection described above between the vertical arms 23,24 ensures that the pulling wheels of a pair are substantially symmetrical with respect to each other move the cable axis when the pulling wheels are passed through by an amplifier or a pre-truss housing or the like, that moves with the length of the cable, and the sliding block bearing absorbs the angular movement of the arms 23,24 to an extent that is necessary for the expected differences between Cable and amplifier or connector housing diameter. One realizes that the same could also be achieved through Formation of the lever arms 23,24 with meshing gear segments at the ends, but this leads to a more expensive one Construction not required if the angular movement of the levers is relatively small.

To make sure that the pulling wheels of a pair make one constant predetermined DnJk on the Kab 1 or amplifier housing exercise that is being transported are, as in Fig. 2 to recognize dlo horizontelan arms 15 and 16 together by a double acting hydraulic ram 37 coupled, the connecting rod 39 pivotally mounted let on a rib on the Back of the lever arm · 15 is formed as in dashed lines Lines in Fig. 2 indicated. The lever arm 16 is similar

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Way connected to the end eye of the cylinder of the hydraulic ram, which is in operation when hydraulic pressure is applied ensures that the two ends of the hydraulic ram are pulled against each other. Such hydraulic rams are known and can be provided with pressure check valves (not shown) that are adjustable so that the ram one constant predetermined tension exerts on the lever arm 15 regardless of the movement of the lever in the direction towards or away from the Cable axis.

In Fig. 1, 2 and 4, the arrangement of the guide rollers and their control mechanism can be seen. The cable guide rollers are arranged in pairs on supports 40. These supports are box-like with their longer sides extending beyond the end surface to form recesses for receiving control springs, as will be explained below.

The supports 40 are mounted transversely to the base frame 1 and are each arranged at one end of a cable laying device s assembly and also between each pair of pulling wheels, as can be clearly seen in FIG. Each intermediate support supports two Pairs of leadership roles, and each pair is closely related to one Pair of pull wheels positioned. Each end support member carries only one pair of guide rollers. The end supports are with a beveled glide path member 41 (Fig. 1). Each of the supports also receives an auxiliary roller 42 which is transverse to Cable path axis is mounted in support bearings 43. This creates a roller surface for the cable or an amplifier housing designed in the event that the cable should become slack and sag for any reason during the Cable laying process.

The arrangement of the guide roller mechanism of FIGS. 4 and 4 enables the guide rollers to be substantially one

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constant, inward guide pressure exerts on the cable or equipment housing connected to it, which is carried out by each assembly of the cable laying device at any moment are transported, and the device also serves to ensure that the guide rollers the cable or the Hold the amplifier housing or the like centered with respect to the width of the cable pulling wheels.

Like the pulling wheels, the guide rollers are also carried by pivotably mounted crank levers 44, 45, 46, 47 (Fig. 4). The rollers 4,5,6,7 are made of nylon and can rotate freely on spindles (not shown) in vertical hubs 48,49 (Fig. 2) sit and are fastened by means of bolts 50,51. The navel 48, 49 are welded into the corresponding lever arms and additionally held by the welded construction 52,53. The upper ends of the spindles have a section reduced diameter on which an end cap 56 is welded, which serves to secure the rollers in place. As one takes from Fig. 2, the crank arm levers on the right side of the support, seen in Fig. 2, are at a vertical distance held by a spacer 57 so that their free arms overlap each other, as shown in FIG.

The outward movement of the crank arm lever 44,45,46,47 is limited by striking a rubber stop 74,75, as can be seen in FIG. These are connected to the lever arms by bolts 54 and 55 (Fig. 2). As also in Fig. 2 recognizable, the right stop is held at a corresponding distance from the assigned lever arm by a spacer 73, which is welded to the underside of the right lever arm which, as explained above, is raised relative to the left lever arm is, as can be seen in FIG. These rubber stop members limit the outward movement of the guide rollers by

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Hit the side edges of the upper support mounting plate.

The inward movement of the crank arm levers is limited by an edge of the free ends of the levers when this is on hit the projection at the inflection point of the opposite lever, as can be seen in FIG.

The crank arm levers 44, 45, 46, 47 (FIG. 4) are pivotable mounted at their inflection points by means of bearing journals which are integrally formed with the lever arms. These journals extend downward through sockets 61,62 (Fig. 2) in the support mounting plates and are load-bearing with torsion springs Cylinders 63,64 (Fig. 2) together by engaging a wedge and an associated wedge surface, which on the upper End of the cylinder or the lower end of the bearing pin are formed. The lower ends of the torsion spring supporting Cylinders are positioned over pins (not shown) that protrude upward from the lower nozzle mounting plate and are attached there. The torsion springs are on their top End connected to the associated cylinder by means of a flanged edge of a disc 65,66 (Fig. 2) while the lower The end of each spring extends along a preload adjustment plate

67 (Fig. 2) extends with a preload adjustment screw

68 cooperates in such a way that the torsion springs are biased in order to exert a desired torque and thus the crank arm lever with the associated guide rollers inward Direction to push on the cable run ache. One symmetrical movement of the guide rollers with respect to the axis of the cable run is ensured by the fact that the free ends 57,58,59,60 (Fig. 4) of the crank arm with gear segments are provided, of which the segments of mutually associated pairs of guide rollers mesh with each other.

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The hydraulic arrangement for the actuation of the hydraulic motors and the pressure control amines depends to a certain extent HaOe depends on the type of use of the cable laying device. Accordingly the motors can be acted upon in parallel by a corresponding hydraulic pressure source, e.g. a main pump, Via a main inflow and a return line with changeover valve devices for reversing the direction of flow to the Motors, if necessary, from laying out the cable to switch to rewind mode. The hydraulic rams are preferably supplied by a separate pump, and each ram is provided with a separate collector. This arrangement ensures that even if the hydraulic Pressure source the grip of the cable is not loosened. It is preferred, however, to have a somewhat more complicated hydraulic arrangement to be provided for the control of the hydraulic motors in order to take into account the conditions that can be expected when using cables is to be deployed or coiled by a ship on the high seas and significant ship movement must be taken into account. For example, pressure and flow sensing and control devices can be provided to measure the hydraulic pressures and To control flows at the outlet of the main drive pump and at the outlet and / or inlet of the various drive motors, so that the design voltage is controlled. Devices can also be provided that operate at a predetermined speed is designed independently of the design voltage. It is assumed that such a control device is the interpretation of with Amplifiers equipped cabins with high Se-. noticeably simplified, there there would be a tendency to ensure that a substantially constant cab tension is maintained even under adverse conditions Conditions and thus the risk of cable damage is kept to a minimum.

A detailed implementation example for a Hydraulic system is according to the description of a second

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Embodiment of the subject of the application given. First, however, possible modifications, the use of which is preferred, will be explained with regard to the first exemplary embodiment. Referring to Figs. 5 and 6, there is shown the construction of a roller assembly which is similar to that explained with reference to Fig. 4, so that the same reference numerals as in Fig. 4 have been assigned to corresponding parts. The arrangement is modified so that runner parts 77 and 78 are provided with flared ends, which facilitate the displacement of the guide rollers through irregularly shaped cable components, for example shackles, brackets and the like, which have to run through the cable laying machine when the cable is laid or is withdrawn. In FIG. 5, the meshing gear sector mechanism according to FIG. 4 is protected by a cover plate 76. The runner parts 77 and 78 are cast aluminum-bronze parts. Each runner extends over a pair of rollers, each arranged on one side of the cable run axis, and is formed with an inwardly facing collar portion 83 (FIG. 6) and rib portion 84, 85, 86. The horizontal rib parts 84, 86 (Fig. 6) are also provided with projections 87, 88, 89, 90, which are provided with sockets for receiving spindles (not shown) on which the cable guide rollers 91, 92, 93, 94 are rotatable are arranged, and * the inwardly turned collar parts are formed with openings near the projections through which a sector of the associated guide roller extends, through the plane of the inwardly facing collar parts, so that an effective engagement on the cable or amplifier in the way described above. Since the centers of the rollers on the same side of the cable run are now fixed relative to one another and to allow the opening action of opposing pairs of rollers, as explained above, the spindles on which the rollers 93 and 94 rotate are carried by crank parts, such as the

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Crank part 95 (Flg. 6), in whose free end the roller spindle 1st shrunk, the "thick" end of the crank is provided with a bushing for pivoting movement around a second spindle, which is carried by the projection 48. The spindles on which the rollers 91 and 92 rotate are in the projections, for example the protrusion 49 (FIG. 6), and extend through spacers such as spacer 96 (Fig. 6). The roller and runner assembly is finally attached by means of headed bolts 97,98,99,100. With the described runner arrangement it follows that any irregularly shaped Part, such as a shackle, a bracket or the like, which is moved, for example, from left to right in Fig. 5 of the drawing, first hits the issued end sections 80,81 of the runners and thus the rollers 91,92 outwards in the top below With reference to Fig. 4 of the drawing described manner offset. When this part of the cable moves between the pulleys, the rollers 93, 94 are also pressed outwards, the radial movement of the crank arm levers 46, 47 being taken up by the crank part, such as the crank part 95 (Fig. 6) and when the cable part moves to the right and emerges from the rollers 93,94, the rollers return to their original position under the action of the return springs, which operate with the crank arm levers 44,45,46,47 are connected as explained above with reference to Fig. 2 of the drawings.

Figures 7 and 8 show a pull wheel assembly which is modified in that a disc brake 101 (Figure 7) is provided which acts on a disk 102. The disc brake mechanism is conventionally designed and can be used as a Component can be purchased commercially, so that a description in detail does not appear necessary and only said so much should be that the mechanism of the hydraulically resettable type is such that as long as the oil pressure in the train wheel oil circuit

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running is maintained, the disc brake remains in the released position and the operation of the device is not impaired. The disc brake accordingly works as a safety device and serves to prevent the rotation of the associated pulling wheels to brake or stop, for example in an emergency when the oil pressure in the hydraulic system collapses for any reason or when it is necessary to interrupt the cable laying or winding work and keep the cable stationary. The caliber part of the disc brake is connected to the horizontal arm 15 of the associated crank arm lever, not shown Parts bolted. Fig. 7 is an outline drawing in plan view of the upright member 21, the horizontal arm 15 of the Crank arm lever 12 (Fig. 2) and the pulling wheel 13. It is preferred, all pulling wheels of the cable laying device with disc brakes of this Kind of equip. Fig. 8 shows in greater detail the preferred construction of a pull wheel assembly and associated therewith Disc brake 102 and hydraulic motor 103. The pulling wheel 13 comprises a solid hub part 104, which on the motor shaft 105 by means of a conical locking sleeve 107 which is connected to the motor shaft by means of a key in the keyway 106 is. The wheel rim parts 108 and 109 are, as shown, provided with annular flanges which are in an annular recess 112 of the Hub 104 sit and are fixed there by means of nuts 110, which are screwed onto bolts 111, which in turn are in the Hub 104 is screwed and spot welded with its back at the hub. Five bolts like the bolt 111 and nuts like the nut Ho are provided and evenly around the wheel hub benefits.

The disc brake 102 is a cast steel part and is comprised the Scheihentoil 113, a head-shaped part 114, which partially on motor 103 engages, as well as on flange 115, which in a second annular recess 113 dor hub 104

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is added 1st and fastened by means of five countersunk head screws (not shown), which surround the flange part are evenly distributed between the bolts 111. In Fig. the brake kaiiber mechanism is not shown because he is located behind the drive motor, but this component is just like the motor with the horizontal arm 15 of the associated Crank lever bolted, with corresponding washers can be used to achieve proper alignment of the caliber mechanism with the brake disc. Of the For the sake of simplicity, the oil pressure supply and return lines for the motor and the disc brake are not shown in FIG. however, they may conveniently be in the form of flexible conduits which are connected to the oil inlet openings in the end cover portion 116 of the Motor and the corresponding oil inlet ports of the disc brake device (not shown) are connected.

A further exemplary embodiment of the subject matter of the invention is described below with reference to FIGS. 9 to 13 explained. 9 to 13 illustrate a Kabellegeschi ff arrangement in which the voltage can be displayed exposed to a submarine cable and this indication shall be continuous during the laying out or re-hauling of the underwater cable.

Fig. 9 shows in outline a plan view of the device.

With 116,117,118 a first, second or fourth assembly referred to, which are arranged in tandem (clfe third assembly is not shown). The assembly comprises two frame parts 119 and 120, which extend in the longitudinal direction dor assembly, as well as four bridge parts 121, 122 and and 124.Dose Tolle are rectangular, hollow welded steel structures, which can be learned through corner seals (not shown)

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are reinforced. Mounting pillars also of rectangular hollow Construction, which carry assigned pairs of train wheels, as in Flg. 2 of the drawings are similar catfish connected to the frame points 119 at 125, 126, 127 and 128. Mounting plates 129, 130, 131 and 132 are provided for the corresponding guide roller assemblies. These mounting plates are superimposed on the frame parts 120 and the corresponding bridge parts 121-124 and with two sets of Bolt holes (not shown) are provided to enable the idler assemblies to slide into one or the other of ™ two positions can be mounted, which are separated from each other in the longitudinal direction by a short distance, namely for reasons to be explained below.

At the left-hand end of the assembly 116 according to FIG. 9 are the frame parts 119 and 120 with end plates 133 and 134 Mistake. These end plates cover the ends of the corresponding ones Assembly parts and also form laterally protruding paws in the form shown in FIG. 13; Fig. 13 shows in view the laterally protruding part of an end plate with a downwardly sloping portion 135 and a paw portion 136, the the latter is provided with five bolt holes as shown. The right-hand end of the assembly 116 is rectangular End plate 137 provided, which extends over the entire width of the assembly, while the left-hand end of the assembly 117 is provided with an end plate 138 which is formed similarly to the end plate 137, but in addition Has paws in the shape shown in Figure 13 extending laterally from each side of the assembly. the Connection between the chassis of the modules 117 and the third of the four modules (not shown) as well as the the latter and fourth assemblies, i.e. assembly 118 in Figure 9, is effected in the same manner as described above for the connection between the chassis of the

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to

Assemblies 116 and 117. The right-hand end of the assembly chassis 118 is terminated by end plates 139 and 140 of the same shape as end plates 133 and 134. The corresponding End gaps are welded to the associated chassis parts, and When assembling the assembly chassis, the abutting ends of the panels are secured by bolts (not shown) tied together.

For the construction of such a cable laying machine built up from assemblies on board a cable ship, the chassis of the assemblies lifted from the deck, and the protruding paw parts are each with the free ends of vertical leaf springs screwed, which are directed downward within support parts, as the support parts 141 and 146 can be seen in FIG. Of the The structure of these support members is explained in detail below with reference to FIG. 11 of the drawings. The support parts are screwed to the deck superstructure, which can be modified so that there are corresponding support frames depending on Requirement. With this arrangement, the whole cable laying device can swing freely in the longitudinal direction under changing Tensile stresses that they experience during laying or winding up is subjected to an underwater cable. This longitudinal movement, however, is limited by the at each end of the Cable laying device dampers are arranged, which protect the unit against excessive vibrations, and in the preferred embodiment of the system include these dampers Load cells, as indicated at 147 and 148 in FIG. 9 and explained in more detail later with reference to FIG. 12. Also include these load cells have tension gauges to provide an indication of the tension at each end of the cable laying apparatus to enable, and also the specification of the tensile value

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allows for a certain amount.

To avoid any tendency of the Kabol laying device to the lateral Vibration as a result of a rolling movement of the cable laying ship To meet the high seas, horizontally aligned leaf spring spans are provided, as in 149,150, LSl and 152. Each The assembly chassis is provided with two such clamping elements, as indicated in Fig. 9 in the case of the I3assruppenchassis LL6, and each Clamping element is on over a middle area of his lungs a platform part clamped, as indicated at 153,15 1, 155 and 156, which are each connected to the deck grooves Ln of similar wools are, v / L «ob (! n for the support parts L-H bi: i 146 explained. The Loads of the springy span lemonte are bolted with angles, which on the inside of the Ln LilmjürLichtung extending Chassis frame parts are welded. The construction and the Assembly of these horizontal leaf spring tensioning elements with their associated clamping pedestals are clear from Fig. IO, without that a special explanation appears necessary. One recognises, that the horizontal leaf spring tensioning arrangement in the illustrated Embodiment is effective only to prevent lateral vibrations of the cable laying device without affecting the longitudinal movement is hindered. Furthermore, the fact that the leaf spring tensioning elements be connected to their clamp platforms after the cable looper from the support members 141 to 146, such as living above bench, hanging arranged 1st, ensured, that the horizontally aligned leaf springs do not play a role in supporting the load of the Kabollegevorrichtung.

Referring now to FIG. 11, the support members 141 to 146 (Fig. 9) are further illustrated. They include one Base plate 157 to which two vertically upstanding support frame parts 158 and 159 are welded. Includes every frame part

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two members of triangular design, only one of which can be seen for each »frame toll in the drawing, denoted by 160 or, Ifil. These triangular parts are welded to associated ones of the laterally extending plates 162 and 163, the plate 163 being short, as shown, so that access to the bolts at 164 is obtained. Furthermore, Abijtanil: ^# .bLöc: l; n Lfiii and Iti6 as well as cantilever parts 167 and UiM, wiiLc.'h lcl.'A v.ic mil Threaded bolt holes are provided for the KiMüchraubon of cones Lf> 9 and 170, by means of which a DeokpluU.f! 171 connected to the upper end of the frame parts 162 and 163 wl.rd, L) It; ubernn linden this Rahmunteile are further connected to each other riur <: h ν L he Klemmboizen, of which only be Ldtiii 1 / ri UNRL 17 J \> cvzo reject th in the drawing recognizable, "Ind. l.'itjf! t. lachii RLntt. fi'dor 174 rectangular shape is at one end /,v;l.:;r:h ii K li! iiimbl <"> c :: hc; n l.7f> and L76 by means of a centrally arranged recorded and Ln of the drawing UoLzcMiü btil ";s; t Igt, and il't Kl t.Miiint) lo": k 176 is with two taps in ütilnrir f) i) t: rsu: 1 ti! Provide in places where two JiuitU.-rboi.zen aui: cjenuiiukon v / ground, of which only the one marked in the ',' (»gluing is recognizable each provided with a centrally arranged, vertically extending pin, and the pins qtciifii Ln correspondingly arranged recesses in the nwiirtn get Lhtut on iktLten egg spacer blocks 165 and 166, where din Abmoiiiiuncj '.- n ac "g ^ are selected loosened clamping bolts 172 and 1.7 $ -Hot ntor assembly with the clamping blocks 175 and 176 and the IU <itt fcvusr 1.74 Lm CLeitsitz between the Ab-Btandnblfickt-n 16 '»and 16 6! nt, v /' ilirond with the clamping bolts 172 and 17.) and dom ontsipi: m! H "nticn not recognizable in the drawing at the pair of the upper finding dor ¹ IO) Lo Lii2 and 163 inward so woit vurnchobon wtmUrn konnon, lial" the leaf spring substructure grouped?

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is securely clamped in any given position. At their free ends, the leaf springs are clamped between a clamping plate 178 and a pawl 136 which, as explained above with reference to FIGS. 9 and 13, extends from the chassis frame in cooperation with the associated support part. In this way, the cable laying device is suspended by means of the leaf spring parts 174, which are each provided in one of the support parts, such as 141 to 146 (FIG. 9), which support parts are assigned to the entire unit. In addition, resistance strain gauges (not shown) are glued along the f central portion of the length of the leaf springs 174 to provide an indication of the load applied to the associated leaf spring by means of the cable laying device assembly, with the weight of the cable laying device assembly being adjusted by adjusting the adjustment bolts on each support member can be distributed uniformly over all supported elements. The triangular parts 160 are also provided with a reinforced bolt hole 179 so that the cable laying device can be bolted to the support parts by means of an appropriate set of bolts when it is not in use. The support parts (with the exception of those at the inboard end) can be provided with corresponding platforms that are graduated in height. The λ height can increase progressively according to the distance from the inboard end, the cable laying device being inclined in the horizontal such that the line of the cable path through the device lies as a tangent when laying or winding the cable of the main cable reel (bow or stern).

Fig. 12 shows in greater detail the load cell dampers, mentioned above and designated 147 and 148 in FIG. Fig. 12 shows a partially broken away Side view of the load cell assembly

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so that the frame part corresponding to the frame part 120 (Fig. 9) is removed. Accordingly, the frame part 180 according to FIG. 12 corresponds to the inwardly directed wall of the frame part 119 (FIG. 9). The mounting plate 181 corresponds to a mounting plate as at 129 (FIG. 9), while the frame part 182 corresponds to a chassis transverse part as at 121 (FIG. 9). The load cell damper includes a load cell 184 having crossbars 185 and 188, the load cell 184 being disposed within the hollow, rectangular cross-section of the cross members 182, the vertical walls of which are slotted to receive the crossbars. The load cell is available as a separate component, but generally comprises a simple cylinder with an appropriate modulus of elasticity. Resistance strain gauges are attached to the inner surface of the load cell so that they are parallel to the cylinder axis. End caps 186 and 187 are integral with the web bars 185, 188 and screw into the corresponding ends of the load cell cylinder. The web bar 188 ends in a round eye part which is arranged between a pair of projections, of which only the nearby projection 183 can be seen in FIG. The two projections are welded to the rear side wall of the transverse part 182, and an eyebolt, not shown, extends through the projections and the eye part of the bar, so as to couple the cable laying device with its end to the bar. The bridge bar 185 forms the end of the arrangement on the cable ship side and is arranged in a bearing 190 provided with a grease packing, which is carried by a welded support bracket 189 which is bolted to a support pedestal 193, which in turn is connected to the deck superstructure by bolts. The outer end of the web bar 185 is threaded to receive the preload nuts 191 and 192 that press the web bar onto a predetermined one

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2ÜA3269

certain value can be biased, which is displayed v / ied by the strain gauge in the load cell. The mode of action of the load cell damper should now be under Will be explained with reference to a typical example.

In a typical case, the maximum cable tension can be at 10 tons, and then the tension that would have to be preset at each end of the cable laying device would be set to 7.5 tons. If now during the laying out or retrieval of an underwater cable the tension in the cable ^ at the point before it exits the cable laying device or in ™

this enters, i.e. at the outboard end of the same, is for example 4 to, then the preload falls in the damper at the outboard end of the cable laying device aif 5.5 tons, while the tensile stress in the damper at the inboard end increases to 9.5 tons, with the cable pre-tensioning at the inboard end of the cable laying device is zero. By adding up the strain gauge reading from the load cells, an indication of the cable preload can be algebraically obtained and this can be continuously varied an instrument arranged in a separate control panel can be displayed. Corresponding resistance strain measuring elements are commercially available items and the associated electrical | or electronic circuits for generating the desired Tension records can readily be set up by a person skilled in the art. These components are therefore not explained in more detail here. To further the fluctuations to counteract in the cable voltage readings that affect the Movements of the cable ship can be traced back to sea, a further strain gauge can be connected to a pendulum, which is placed on the ship and the output of which is switched against the output of the load cell strain gauges, so that there is always a constant reading of the cable tension. One knows from the above explanation that as long as

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the maximum cable tension remains within tolerable limits, the tensile stress at each end of the cable laying device is always balanced and therefore the longitudinal movement of the cable laying device will be very small and no more than a few Hundredths of a millimeter.

A comparison with Fig. 1 shows that in a unit consisting of several assemblies, as above under Explained with reference to FIG. 9, guide roller supports with a sliding path 41 as in FIG. 1 are not provided and each assembly comprises a number of pairs of pulling wheels, to which respective supports are connected, respectively again leave only one pair of guide rollers. If accordingly the cable laying device assembly shown in Fig. 1 as part of an assembly with several assemblies use finds as in Flg. 9, the slide section support at the left end of the cable laying jig assembly would be modified to that it has the same shape as the intermediate guide roller supports, while the glelist support part at the right end of the Cable laying device according to FIG. 1 would not be provided. With the The arrangement of the cable laying device shown in FIG. 9 can be connected to a sliding platform (not shown), but separate from the potash lying device and arranged near the inboard end of the same.

With reference again to FIG. 1, it should be mentioned that it has been found to be desirable, when laying out or reeling a cable, to ensure that the moment of force between the zo-syadorns of a pair and the cable sheathing with respect to the corresponding crank lever bearings in one direction should be those * · that the pulling wheels of the couple

- 21 -

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2Q43Z

ti

pushed inward in the direction of the cable path axis. A consideration of Fig. 1 teaches that when the cable laying device of Fig. 1 is used for laying out or rewinding an underwater cable and is constructed so that its left-hand end is directed towards the bow reel so that the cable is either right to left runs out of the device or enters it from left to right, the above requirements are taken into account, which are not taken into account when the cable laying device is used in the opposite sense, ie in connection with the rear reel of a cable laying ship. However, the direction of the cable laying device can actually be changed by turning each pair of pulling wheels through 180 ° When performing this reassembly, it is also necessary to re-center the guide roller supports so that the guide rollers are again in the correct position relative to the changed pulling wheels and so that this becomes possible , it is provided that the post mounting plates 129 (Fig. 7) are provided with two sets of bolt holes, as discussed above i

became.

It goes without saying that the cable laying device, as described, is very versatile and can be used can find to meet the requirements of a restraint or pull-out gear for general cable laying tasks, be it on land or at sea. The cable laying device is particularly suitable for laying or reeling one with

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Amplifiers provided underwater cables have been described. It is assumed, for example, that such a cable laying device It could be moitLert on transept rails in such a way that their center line is either above the cable drum can be located for use as a restraint or pull-out gear or above the bent reel center line for use as an extension gear for cables equipped with amplifiers. Furthermore, a number of cable laying devices are used in tandem for laying cables with amplifiers over the rear reel. Although this cable laying device is useful for laying out or rewinding any type of cable, but is particularly useful for laying out or rewinding relatively sensitive, unarmoured, plastic-insulated cables, as the distance. Distance between pairs of train wheels along with the use of a number of pairs of. Pull wheels in tandem it allows that while laying out or Rewinder to distribute the tensile stresses exerted on the cable over a considerable part of the cable length: whereby the tension gradient at any point on the cable as it travels through the cable laying device is relatively low with regard to the maximum tensile stress to which the cable may be subjected (typically in the order of 10 tons).

14 and 15 show a further embodiment of the Cable laying device according to the invention. This second embodiment differs from the first embodiment, which has been described above, mainly in that the guide rollers that were used there are replaced in the second embodiment by further pairs of pulling wheels, the are arranged horizontally such that the cable laying device according to the second embodiment pairs of vertical and

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Pairs of horizontal pulling wheels are comprised of placing the respective pairs in the spaces between the others. These Arrangement accordingly enables a more compact structure, which is particularly suitable for cable ship systems with limited available space and where the cable tension / which occur are less dangerous for damage to the cable structure, for example for laying out or rewinding robust armored cable. 14 shows, in outline only, a top plan view of one end of a cable laying device assembly in the second embodiment and illustrates the general j my arrangement of the horizontal and vertical pull wheels. Fig. Shows in more detail a section along line A-A in Fig. 14, with the cut pair of horizontal pull wheels removed for clarity.

14 is a cable laying device of this embodiment constructed from one or more assemblies, each comprising seven pairs of pulling wheels, as well as a cable inlet and a cable outlet opening, which is assigned to the respective End of the assembly are arranged. The seven couples of train wheels are arranged so that four horizontal and result in three vertical pairs, with each vertical pair sandwiched between every two horizontal pairs; this arrangement " is chosen to keep the arrangement of the vertical support parts that are required as small as possible and thus to reduce the overall weight of the device. Of the seven Fig. 14 shows pairs of pulling wheels comprising an assembly only two horizontal pairs with pulling wheels 201, 202, 203, 204, separated from each other by a vertical pair, of which only that upper pulling wheel 205 can be seen in FIG. 14, while the lower pulling wheel 206 of this pair is shown in FIG. 15, which is explained below. Further pairs of vertical and horizontal pulling wheels are constructed and arranged identiich

109810/1617

like the ones shown. As in the first described embodiment, the pulling wheels are individual by hydraulic motors driven and provided with air-filled and disc brakes, as explained above with reference to FIG. 8; however, the disc brake shoes or calibers are shown in FIG. 14 for the sake of simplicity Clarity not shown. Also in accordance with the first embodiment, each pull wheel is at the free end of one Arranged lever arm, namely lever arms 207,208,209,210 and 211, each of which is pivotably mounted in a hub part as at 212. The lever arms all have the same general structure and comprise a flat plate-like member 213 with a rearwardly extending reinforcing flange 214; these are welded to one another and also to the hub part 212, and the Construction is similar to that discussed above with reference to Figure 3 of the drawings. The pull wheels of each pair are also coupled together by connecting levers similar to the lever parts 23 and 24 from Fig. 3 of the drawing and with hydraulic Rams are provided, but these are not shown in FIG. 14 for the sake of clarity, but with reference to FIG. 15 further explained below. Also in Fig. 14 is a cable entry gate or a cable inlet opening recognizable with a cable roller 215, carried by pivotably mounted lever parts 216 and 217. These levers are in the form of a crank, and the free ends (not shown) are connected to coil springs 218,219, which in turn are connected to fixed plates 220,221 so that the Roller is pressed into contact with a cable entering or exiting the assembly. The gate embraces also a pair of vertical roller members 222 and 223 which limit the lateral movement of the cable.

FIG. 15 of the drawings shows how the cable laying device assembly according to the broader embodiment is built on a chassis, which has three longitudinal frame parts 224, 225 and 226 comprised of each rectangular hollow

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Cross-sectional shape, as in Pig. 15 indicated. The lower Frame parts 225 and 226 are bridged by end plates and cross members (not shown) to form a stable base plate while the upper frame member 224 is supported by two prefabricated structures, each two extending laterally extending vertical side panels 227 and 228 (Fig. 14), which are spaced apart and connected by reinforcing ribs 232 and 233 (Fig. 15). The top At the end of each assembly there is a mounting bracket for the upper frame part 224, while the lower ends of the superstructures are cut out to make room for one Floor support plate as well as for the lower frame part 225, and the whole arrangement is constructed as a welded construction. Also the inward-side edges of the body side parts 227 and 228 are provided with wing parts 229 (FIG. 15) which point inward protrude beyond the upper surface of the lower frame part 225 and between which two horizontal support parts are welded, of which only the support part 230 can be seen in FIG is. These support parts carry the socket housing around which the pulling wheel 204 is rotatably mounted, as will be described further below explained in more detail. The two prefabricated body parts are arranged at a distance in the longitudinal direction from the upper frame part 224, so that the support is at points between the bearing points | results, around which the upper of the three vertical pairs of pull wheels are pivotably mounted.

The pivot points about which the lever arms, connected to the associated pulling wheels, are pivotable, are all of the same construction, and consequently only the pivot point for the upper lever arm 209 will be explained in detail below. This lever arm 209 with its support part 214 and a hub part 212 is in front of ichweißt to form a one-piece

• \

109810/1687

Unit. A pivot pin (not shown) is mounted within hub portion 212 and rotatably received in a bearing part 234 which is carried by the upper frame part 224 and through which the end of the pivot pin extends extends; the protruding end portion of the pivot pin is connected to one end of a link lever arm 235, and the assembly is held in place by an end cap 236 and a lock nut 237 which cooperates with a threaded one End of trunnion. With this arrangement, displacement of the pull wheel lever arm 209 is transmitted to the connecting lever arm 235. The lever arm 242 with the lower pull wheel 206 of this vertical pair is similarly coupled to a link arm 243.

The function of the connecting lever arms 235,243 and the manner in which they are coupled to one another by means of of a pivot bearing 244 is identical to that as described above with respect to the lever arms 23 and 24 of the first performance was described and in Flg. 3 of the drawings can be seen. It should be noted that in the case of this second embodiment, the connecting lever arms 235 and 243 on the rear The ends of their respective bearing parts are arranged so that they are not in the way of the horizontal pulling wheels. As in 15, the bearing part 247, which is assigned to the lower pull wheel lever arm 242, is carried by two support parts 245 and 246 (Fig. 15), which are welded to the lower frame part 225 and stand upright from this such that the Bearing parts 234 and 247 are vertically aligned with one another.

The vertical pair of lever arms 209 and 242 are connected to one another by a hydraulic ram 248, the ram shaft 241 being provided with a fork end which cooperates with an eye 240 (dashed in FIG. 15

109810/1687

indicated), which protrudes from the reinforcement rib 214 of the lever arm 209, the connection being made by a Pin 242; the cylinder head end 249 of the ram, on the other hand, the in Fig. 15 is also only indicated, is in a similar manner connected to the reinforcing rib portion of the lever arm 242. As explained above in connection with the first embodiment, the ram is acted upon so that it exerts a train on the associated lever arms such that the pulling wheels of a pair pulled inward in the direction of the cable path axis.

The lever arms 210 and 211, which are the corresponding horizontal pulling wheels 203 and 204, respectively, are in bearing bushes 253 and 254 pivotally mounted and provided with connecting lever arms 255 and 256 in exactly the same way as above for the vertical pull wheels are described, while the horizontal ones Link lever arms 255 and 256 extend behind and below the lower vertical pull wheel 206. As in the case of the vertical pulling wheels is a horizontally acting hydraulic ram 257, indicated in FIG. 15, with the lever parts 211 and 210 coupled in the same way as above under Reference to the vertical ram 248 explained.

The horizontal ram 257 could be in one of the position shown differing position can be arranged. the The ram could be coupled to the pin connecting lever arms 255 and 256 and calibrated lengthways of the chassis. Such an arrangement would have the advantage that aie would be immune to damage as a result of a vibrating Shackles or dirt that is brought on board along with the cable.

The bearing parts 253 and 254 are carried by eich in Horizontally extending support plates, wherein the support plates 251 and 252 cooperate with the bearing parts 254 and are welded with side plates 250 and 255 (Fig. 14),

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which in turn are welded to the upper surface of the lower frame part 226. Reinforcing ribs of triangular shape (not visible in Fig. 15) can also be welded to these side plates and to the lower frame parts. The bearing part 253, connected to the horizontal lever arm 210 and its associated horizontal pulling wheel 204, is shown in FIG. 15 partially covered by the vertical bearing part 247; however, it is supported in a manner similar to bearing part 254, the side panels corresponding to the side panels 250 and 255 being formed with wing parts 229 of the body side parts, as explained above.

FIGS. 16 and 17 show a hydraulic system which is compatible with both of the above-mentioned embodiments. In FIG. 16, reference numeral 300 indicates a hydraulic motor / pump unit, connected to an associated pulling wheel. The motor / pump unit is switched into the hydraulic system through isolating valves 301 and 302, by means of which the motor / pump unit 300 from the System can be disconnected if necessary. The motor / pump units for the other train wheels are in the system connected in a similar manner and in parallel to the motor / Purapen unit 300, as indicated by the reference symbols 303,304.

When a cable is to be rewound, the motor / pump units are used as motors and vice versa as pumps, when a cable is laid. A winding / laying valve 305 controls the selection between the rewinding or unwinding mode, and the drawing shows the cable position. When a cable is laid, the motor / pump unit pumps hydraulic fluid along one of two paths depending on the one Direction of rotation of the motor / pump unit. Accordingly, hydraulic fluid flows through line 306, check valve 307, throttle control 308, valve 309, heat exchanger 311, check valve

100110/11 * 7

and line 315 back to the motor / pump unit for one Direction of rotation. For the other direction of rotation, the path includes line 315, check valve 316, component 308,309,311, Check valve 317 and line 306. The throttle control and valve 309 form a resistance to the flow of hydraulic fluid and thus control the braking force that is exerted on the cable to be laid. The throttle control 308 is adjusted to provide the desired degree of braking and valve 309 is a pressure compensating valve to maintain the degree of braking essentially independent of pressure changes in the system. A pressure relief valve 310, the throttle control 308 and the valve 309 are connected in parallel. The pressure relief valve 310 is preset to a pressure value corresponding to the maximum permissible tensile force. When the pressure in the system rises and above goes beyond this preset value, the opens Valve 310 And carries hydraulic fluid in parallel to the heat exchanger. It can be seen that this arrangement serves to damage the cable to be avoided as a result of excessive tensile stress. The heat generated in the hydraulic fluid is passed through the heat exchanger 311 discharged, with coolant via the flow paths 312 and 313 flows in and flows out.

A pressure sensing valve is indicated at 318; it is actuated by the hydraulic pressure difference between the lines 306 and 315. The valve 318 is shown in the non-actuated position, but connects the high pressure side of the during operation System with a pressure measuring device 319 and the Niederdruckse it e via a pressure relief valve 321 with a hydraulic fluid storage tank 322. Fluid discharged from the circuit via valve 310 is replaced by a supply device 323 via a check valve 324. Whether the line 306.

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3b

or the line 315 is under high pressure, depends on the Direction of rotation of the motor / pump unit.

The feed device 323 also supplies the disc brakes, indicated at 326. The disc brakes are connected in parallel, as indicated at 326. In some systems it may be desirable to provide a pressure reducing valve to reduce the To feed disc brakes. The feed device 323 keeps the brake shoes or calibers away from the disks, as already mentioned above was mentioned.

The operation of the hydraulic system when repeating a cable requires the use of the components which are shown on the left side of the diagram. The winch / unfold valve 305 is turned to its lower position (as indicated by arrow 327) for the motor / pump units to operate as motors.

A prime mover 328 operates a variable output hydraulic pump 329 connected to lines 330 and 331. Lines 330 and 331 are connected to the hydraulic motor / pump unit via the make-up / disengage valve 305 via lines 306 or 315. The supply device 323 is connected to the lines via the check valves 332 or 333 330 or 331 connected. This arrangement prevents cavitation from occurring in pump 329.

It will be seen that the setting of the pump 329 and the control by the throttle control 306 enable the The pulling force exerted on the cable is controlled. The reversal of the pumping direction in the case of pump 329 also reverses the direction of rotation of the motor / pump unit ^.

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a »

Fig. 17 shows the hydraulic system as far as it is used for the hydraulic rams. The reference number schematically illustrates such a hydraulic ram. As explained above, the rams are double-acting, with the Lines 335 and 336 hydraulic fluid inlets to corresponding ones Supply sides of the piston of the ram 334. A reverse switch 337 controls the supply of hydraulic fluid to the rams such that the pulling wheels are directed towards or away from the cable be pre-tensioned as required. A collector 338 is connected in the cooking pressure line to switch 337. The low pressure connection to switch 337 i3t via line 343 to a hydraulic fluid storage tank 344. A pressure relief valve 342 (which is set to a value corresponding to the maximum permissible inward force, which may be exercised on the cable via the pulling wheels) is switched from the high pressure line to tank 344. A high pressure supply 339 (typically about 140 atm) is there connected to the collector 338 via a check valve 340. Each ram is provided with an associated collector, non-return valve, Changeover switch and pressure relief valve in a similar manner. The rams are connected in parallel, as indicated by reference numeral 341.

The subject matter of the invention can of course continue be modified. For example, the guide rollers and pulling wheels can be stored on separate base plates, or two or more cable laying devices can be used in tandem Find. Any number or arrangement of guide rollers required and train wheels can be used to accomplish a particular task. Instead of diametrically opposed to each other Pairs of pulling wheels could for example be arranged opposite a pulling wheel a pair of pulling wheels or alternatively a pair of free running wheels.

Patent claims:

1QM10 / 1SI7

Claims (20)

Claims Device for laying or picking up cables with devices for pulling on the cable, characterized by a role, one with this cooperating surface, brackets for the roller and surface, resilient biasing devices for the Pressing the roller and surface into engagement with the cable surface and by means for actuation the role in such a way that it exerts a pull on the cable. 2) Device according to claim 1, characterized in that that the surface cooperating with the roller consists of one or more further rollers. 3) Vorifcrchtung according to claim 2, characterized in that that the other role or one or more of the other roles is or are provided with means for actuation the roller or rollers such that tension is exerted on the cable. 4) Device according to claim 3, characterized in that further roles for exercising a train on the cable are arranged in tandem behind the first-mentioned role. 5) Device according to claim 1, characterized in that the resilient biasing device comprises a hydraulic ram. 6) Device according to claim 4, characterized in that the hydraulic rams are so formed and arranged 109110 / 1Mf are that those trained for pulling the cable Rollers are pressed into contact with its surface. 7) Device according to claim 1, characterized in that that the means for actuating the roller comprises a hydraulic motor / pump unit. 8) Device according to claim 6, characterized in that the hydraulic motor / pump units are designed for the actuation of the rollers which train the cable. Ä 9) Device according to claim 2, characterized in that the rollers are provided with pneumatic tires. 10) Device according to claim 1, characterized by Rollers for the application of the train comprising pairs of train wheels arranged in tandem and fitted with pneumatic tires are, the wheels are arranged so that the pair of wheels in use in contact with the cable periphery stand, at opposite ends of a substantially vertical diameter thereof, through hydraulic rams for pushing the pulling wheels into engagement with the cable surface and by hydraulic motor / pump units " for operating the wheels. 11) Device according to claim 10, characterized in that guide rollers for the positioning of a cable relative to the roles are provided, which guide roles between successive pairs of train wheels are arranged. 12) Device according to claim 10, characterized in that that further pairs of hydraulically operated pull wheels are provided are and that the wheels of a further pair of train wheels are arranged are that the wheels in operation are the periphery of a cable -W- 109810/1687 at opposite ends of a substantially horizontal diameter of the same touch. 13) Device according to claim 11, characterized in that that the train wheels are provided with disc brakes. 14) Device according to claim 12, characterized in that the pulling wheels are provided with disc brakes. 15) Device according to claim 10, characterized in that a device for determining the tensile stress in a cable to be laid out or reconnected is. 16) Apparatus according to claim 10, characterized in that a device for coupling the wheels of a pair is provided for their essentially symmetrical displacement relative to the cable axis. 17) Device according to claim 7, characterized in that a hydraulic system is provided with a throttle control such that when the hydraulic motor / pump unit is in operation, the throttle control has an adjustable flow resistance represents for the hydraulic fluid from the motor / pump unit, so that an adjustable brake cable to be laid out Cable is exercised. 18) Device according to claim 5, characterized in that the ram with a hydraulic fluid limiting valve in The operative connection is to limit the force that can be exerted on the cable surface. - 4t- 109810/1687 19) Device according to claim 17, characterized in that that a hydraulic fluid pressure limiting valve is provided to limit the brake cable that can be exerted on a cable. 20) Device according to claim 10, characterized in that that a hydraulic system is provided with a throttle control such that, when in operation, the hydraulic motor / pump units work as pumps, the throttle control forms an adjustable hydraulic fluid flow resistance from the motor / Pump unit in such a way that an adjustable brake cable is applied to a cable to be laid out and that a hydraulic fluid pressure limiting valve Is intended to limit the brake cable that can be applied to the cable. 109810/1687