Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
  • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
  • H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
  • H02G1/08—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle through tubing or conduit, e.g. rod or draw wire for pushing or pulling
  • H02G1/081—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle through tubing or conduit, e.g. rod or draw wire for pushing or pulling using pulling means at cable ends, e.g. pulling eyes or anchors
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
  • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
  • H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
  • H02G1/08—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle through tubing or conduit, e.g. rod or draw wire for pushing or pulling
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
  • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
  • H02G3/28—Installations of cables, lines, or separate protective tubing therefor in conduits or ducts pre-established in walls, ceilings or floors

Definitions

• the invention relates to a method for extracting cable elements from cable ducts in cable ducts, wherein the cable element clamped with a clamping device and exerted a tensile force on the cable element and the cable element is pulled out of the cable tube, wherein the cable element is clamped in the cable duct and gradually pulled out of the cable tube in that, after clamping with the clamping device, the cable element is pulled a distance substantially in the longitudinal direction of the cable element from the cable tube, then the clamping device is opened and moved back the distance in the direction of the cable tube, the cable element is clamped again and pulled out over the distance.
• the present invention relates to a device for extracting cable elements from cable ducts in cable ducts, with a clamping device for clamping the cable element and a device for exerting a tensile force on the cable element for pulling the cable element out of the cable duct.
• a technique for laying fiber optic cables is known.
• a pilot hole is first dug between an input shaft and an output shaft by means of a mole-type machine, and then a flexible guide wire is drawn into the pilot hole.
• the guide wire is connected on the side of the output shaft via a connecting part with the cable bundle to be recovered.
• a device for cyclically pulling the guidewire is attached in the entrance shaft.
• the extraction device comprises a frame with a plate which comes to rest at the entrance of the pilot bore.
• two hydraulically actuated cylinders are provided, at the ends of which a clamping device for the guide wire is fastened.
• the guide wire and the wire bundle connected thereto are gradually pulled through the pilot hole by a plurality of operation cycles of the cylinders by repeatedly clamping the guide wire, advancing the cylinder pistons so that the guide wire is pulled out a certain distance, and the Clamping device is released, and the pistons are retracted.
• operable element includes both complete cables, as commonly laid in conduits, and parts of cables, such as individual strands or bundles of strands of a cable.
• the present invention relates primarily to so-called tube cables, in particular for telecommunications, power supply, television, etc., which are usually laid in a plastic or concrete pipe.
• tube cables in particular for telecommunications, power supply, television, etc.
• a plastic or concrete pipe usually laid in a plastic or concrete pipe.
• Tubular cables are often provided on the outside with a water-repellent medium, especially tar, which prevents the ingress of moisture into the interior of the cable.
• Both the water-repellent medium and the sheath of the cable which may be made of plastic or lead, usually sticks to the inside of the cable tube, whereby a withdrawal of such cables is difficult.
• This adhesive effect is enhanced by the fact that frictional heat is generated during the drawing of such a cable, which softens the water-repellent medium but also the cable sheath and makes a connection with the inside of the cable tube.
• a heat development can also occur with already laid cables by the flow of current through the strands of the cable. Dirt in the cable leads to a connection between the cable and the cable and makes it difficult to remove the cable.
• the object of the present invention is to provide an above-mentioned method for extracting cable elements from cable ducts in cable ducts, which is as simple, quick and inexpensive to carry out, and avoids or at least reduces the disadvantages of known methods.
• Another object is to provide an above-mentioned device for extracting cable elements from cable ducts in cable ducts, which is as small as possible and inexpensive and inexpensive to produce and allows rapid and easy use in a cable duct.
• the device should be able to apply a corresponding tensile force to the cable element, so that a solution of the cable element from the cable tube is possible, and a rapid extraction of the cable element is ensured from the cable tube.
• the object of the invention is achieved by a method mentioned above, in which the clamping device is moved in translation on a carriage around the distances. By gradually pulling the cable element out of the cable tube, the process can also be carried out directly in the cable duct.
• the full tensile force can act on the cable.
• the method according to the invention is used in particular when the cables or cable elements stick in the cable tube. After the solution of the cable element in the cable tube, conventional methods for extracting the cable elements may also be used.
• the drawn from the cable conduit cable element is guided out of the cable duct and rolled up.
• the leadership of the cable element from the cable duct can by corresponding known per se pulleys or the like. respectively.
• the rolled-up, extended cable element can then be recycled, in particular the recycling of copper usually contained in the cable, the copper strands are supplied.
• the cable element pulled out of the cable tube can also be cut.
• cable pieces can be produced in the desired length, their removal is easier.
• this method is suitable for busy roads, where it is not possible to redirect the traffic around the shaft to arrange a winch and drum.
• a corresponding solvent can be introduced before the extraction process.
• cables are often surrounded by a tar layer. This can be softened, for example, by using fatty acid methyl ester (biodiesel).
• the solvent can be very easily and quickly introduced into the cable tube by being atomized and injected into the cable tube.
• conventional compressors can be used for blowing conventional compressors.
• the cable element after releasing the cable element from the cable tube by the stepwise extraction according to the invention from the Jardinr ⁇ hr the cable element can be continuously pulled out of the cable tube.
• a known continuous exhaust process which can be carried out for example with a corresponding Quetschwinde, a faster extraction is usually possible.
• the cable element is preferably clamped hydraulically. With appropriate hydraulic cylinders, a sufficiently large clamping force can be applied to the cable element.
• a particularly high clamping force for example in the range of a few tons, so that the cable sheath is firmly connected to the interior of the cable, so that a relative movement between individual cable elements can not take place during the extraction process.
• the object of the invention is also achieved by an above-mentioned device for extracting cable elements from cable ducts in cable ducts, wherein the clamping device is arranged on a carriage, which carriage is arranged translationally movable on a base part substantially in the longitudinal direction of the cable element, and the device for exercise a tensile force on the cable element is provided by at least one arranged between the base part and the carriage drive to achieve the translational movement of the carriage relative to the base part, and the base part is formed for supporting on a wall of the cable duct surrounding the cable tube.
• the clamping device is arranged on a carriage, which carriage is arranged translationally movable on a base part substantially in the longitudinal direction of the cable element, and the device for exercise a tensile force on the cable element is provided by at least one arranged between the base part and the carriage drive to achieve the translational movement of the carriage relative to the base part, and the base part is formed for supporting on a wall of the cable duct surrounding the cable tube.
• the device or its base part is supported on a wall surrounding the cable tube, so that the applied tensile force on the cable element is substantially completely available for the extraction process.
• the corresponding counterforce to the tensile force is introduced into the wall of the cable tray without supporting structures or the like. be charged.
• corresponding support structures which make the device harder to handle, usually omitted.
• the clamping device is releasably connected to the carriage. Due to the detachable connection, the device can be divided and thus more easily introduced into the cable duct.
• the releasable connection between the clamping device and slide preferably allows a tool-free connection and separation.
• the clamping device also variously to be arranged on the carriage, depending on the space in the cable tray.
• the clamping device can be arranged on the carriage to make the clamping of the cable element within the carriage or seen in the pulling direction are arranged in front of the carriage, so that the clamping of the cable element takes place outside of the carriage.
• a corresponding adapter for arrangement at the end of the cable duct is preferably arranged.
• the adapter partially protrudes into the cable tube with the cable element to be pulled out.
• corresponding wedges or the like can also be used. be arranged between the adapter and the inner wall of the cable tube.
• the adapter is rotationally symmetrical and usually designed according to the cable tube.
• the adapter will thus preferably have a cylindrical or partially cylindrical shape. This ensures that the entire device can be rotated 360 ° relative to the cable tube and can be placed in a desired position depending on the available space.
• the clamping device preferably comprises at least one hydraulic cylinder.
• the one or more hydraulic cylinders are connected to a corresponding hydraulic unit or a hand pump.
• the clamping device has two, preferably profiled, clamping plates. These profiled, for example, corrugated or serrated clamping plates are pressed into the cable element to be pulled out and prevent it from slipping, so that the full tensile force can act on the cable element.
• a U-shaped lower clamping profile in which the pulled-out cable or cable element is inserted and inserted between the legs of the U-shaped profile upper clamping plate can be used.
• the drive for achieving a translational movement of the carriage relative to the base part is preferably formed by at least one hydraulic cylinder.
• the hydraulic cylinders are connected to a corresponding hydraulic unit or a hand pump.
• two hydraulic cylinders are best arranged on both sides of the cable element to be pulled out. With such hydraulic cylinders, a high force can be achieved with a small size.
• the hydraulic cylinders are connected to corresponding controls.
• there are two operating elements wherein a control element is connected to the hydraulic cylinders of the clamping device and controls the clamping of the cable element accordingly, while the other control element is connected to the hydraulic cylinders of the drive to achieve the translational movement of the carriage and the forward and backward movement of the Carriage relative to the base part controls. Operation can be manual or automatic or semi-automatic.
• the base part is preferably formed by two parallel rails, between which the cable element to be pulled out of the cable tube can be arranged. This construction can be easy be prepared and is robust due to the symmetrical arrangement.
• a device for introducing a solvent is provided in the cable tube, so that before or during the extraction process, the possibly existing water-repellent medium on the outside of the cable element softens and thus the extraction process can be facilitated.
• a solvent for the tar often used on the outside of the cable element fatty acid methyl ester is particularly suitable.
• biodiesel is relatively cheap and biodegradable, so that contamination of the soil is harmless.
• corresponding support elements or devices for attachment of support elements may be provided on the base member.
• such devices can by tabs or the like. be formed on the base member between which corresponding supports or bolts can be arranged to walls in the cable duct.
• a device connectable to the carriage can be used to continuously extend the cable element, thereby enabling a more rapid extraction process.
• a device for continuous extraction of the cable element may be formed for example by a winch or Quetschwinde.
• a device for cutting off the cable element which can also be arranged, for example, on the carriage and can be connected to it, it is possible to cut off the cable element at desired locations in order to produce, for example, easily transportable short cable pieces.
• FIG. 1 shows a cable duct in cross section.
• Fig. 2 shows the use of a conventional method for extracting a cable element from the cable tube in a cable duct;
• Fig. 3 shows an alternative method for extracting a cable tube from the cable tube of a cable duct according to the prior art
• FIG. 5 shows an embodiment of a device according to the invention for extracting a cable element from cable ducts in cable ducts in side view
• FIG. 6 shows the device according to FIG. 5 in plan view
• FIG. 7 shows an alternative embodiment of a device according to the invention for extracting cable elements from cable ducts in cable ducts.
• Fig. 1 shows a cable duct 1 in cross section, in which converge a plurality of conduits 2.
• the cable duct 1 is accessible via a usually vertically arranged access 3, which is closed with a corresponding cover (not shown).
• cable duct 1 run several cable tubes 2 together, each having one or more cable elements 5.
• the cable ducts 2 may be provided with a lining 4, for example made of plastic.
• the cable elements 5 are divided and relocated, for example, in corresponding pipes for connection with the individual households or the cable elements merely connected to each other.
• the cable elements 5 are surrounded by tar, plastic, in particular PVC, or other materials which stick in the cable tube 2 or the liner 4 and can make the extraction process of such a cable element 5 more difficult.
• Fig. 2 shows schematically a AusziehVM according to the prior art, in which the cable element 5 is guided over deflection rollers 6 via the vertical access 3 from the cable duct 1, and outside of the cable duct 1, a corresponding tensile force F is applied to the cable element.
• the tensile force F can by appropriate winches or the like. be generated (not shown).
• a particularly high tensile force F must act on the cable element 5 to allow a take off. For example, tensile forces of 3000-6000 kg or more are common.
• Fig. 3 shows the principle of another method of the prior art for extracting a cable element 5 from the cable tube 2 in a cable duct 1, wherein a device 8 is arranged for applying a tensile force F on the cable element 5 in the cable duct 1.
• a device 8 for example, by a Quetschwinde, consisting of two rollers 9, between which the cable element 5 is clamped formed.
• Such a device 8, which can also generate the usual tensile forces F for pulling out a cable element 5 from a cable tube 2, and also corresponding support means (not shown) are particularly bulky and heavy, which is why their handling in the cable duct 1 is also complex.
• FIGS. 4A to 4D show the principle of the method according to the invention and the device according to the invention for extracting a cable element 5 from the cable tube 2 in a cable duct 1.
• the device 10 essentially comprises a base part 11 and a relative to the base part 11 in the longitudinal direction of the cable element 5 translationally movable slide 12 with a clamping device 13.
• the base part 11 has an adapter 14 for arrangement and support at the end of the cable tube. 2 with the cable element 5 to be pulled out.
• the base member 11 is disposed directly in front of the cable tube 2 of the cable element 5 to be pulled out and supports itself on the wall 15, which surrounds the opening of the cable tube 2, accordingly.
• the entire tensile force of, for example 2-6 t can be applied directly and without danger to the cable element 5 to be pulled out.
• the safety during the extraction process can be substantially increased since the tensile force is applied directly to the cable element 5 and no tension occurs in the cable duct 1.
• the device 10 according to the invention can be made particularly small and light, so that it can be placed quickly and easily in the cable duct 1. According to FIG. 4A, the cable element 5 is clamped by the clamping device 13 and then, according to FIG.
• the carriage 12 is displaced relative to the base part 11 in the longitudinal direction of the cable element 5 by a distance ⁇ x.
• a corresponding drive 16 is provided, which may be formed, for example, by hydraulic cylinders 19 (see FIGS. In essence, the full force applied by the drive 16 acts on the cable element 5.
• the corresponding counterforce is introduced via the adapter 14 of the base part 11 in the wall 15 of the cable tray 1.
• the cable element 5 is gradually moved out of the cable tube 2.
• the extraction process can also be continued with a conventional continuous exhaust process.
• a solvent for example fatty acid methyl ester (biodiesel)
• biodiesel fatty acid methyl ester
• FIGS. 5 and 6 show an embodiment of a device 10 according to the invention for extracting a cable element 5 from a cable tube 2 in a cable duct 1 in side view and top view.
• the device 10 consists of a base part 11, which is essentially formed by two parallel rails 17.
• the base part 11 is provided with an adapter 14, or formed integrally therewith, which projects partially into the cable tube 2.
• the adapter 14 is rotationally symmetrical, as is the usually circularly shaped cable tube 2, so that the entire device 10 for extracting the cable element 5 from the cable tube 2 can be rotated 360 ° relative to the cable tube 2. This is particularly advantageous in tight spaces in the cable duct 1, since the device 10 can be arranged so that sufficient space for clamping the cable element 5 is available.
• the carriage 12 is also formed from rails 18 which are slidably disposed on the rails 17 of the base member 11 in the longitudinal direction of the cable member 5.
• the clamping device 13 is detachably connected to the carriage 12 and, in the illustrated variant, has three hydraulic cylinders 20 for clamping the cable element 5.
• the hydraulic cylinders 19, 20 are connected to a corresponding hydraulic unit or a hand pump (not shown).
• On the base member 11 devices 21 may be provided for attachment of support members 22.
• the carriage 12 After clamping the cable element 5 via the hydraulic cylinder 20 to the clamping device 13, the carriage 12 is moved together with the clamping device 13 by the hydraulic cylinder 19 in the longitudinal direction of the cable element 5 and thereby pulled the cable element 5 from the cable tube 2. After that As described in FIGS. 4A-4D, the clamping is released and the carriage 12 is moved back again and, after a renewed clamping, the cable element 5 is pulled out of the cable conduit 2 in a stepwise manner.
• the device 10 can be easily divided and the items can be quickly and easily introduced into the cable duct 1.
• the clamping device 13 it is possible to arrange the clamping device 13 as shown in Fig. 7.
• the clamping device 13 has been turned relative to the variant according to FIGS. 5 and 6 and, seen in the pulling direction, placed in front of the carriage 12, namely outside of the carriage 12, and connected thereto by corresponding connecting elements. In this way, in the case of lack of space, laterally next to the cable element 5, this can be clamped more easily and pulled out of the cable tube 2.
• the clamping device 13 preferably has two correspondingly profiled clamping plates 23, between which the cable element 5 is squeezed.
• FIGS. 5-7 show only one of many possible embodiments for carrying out the method according to the invention. Due to the direct application of the method and the device in the cable duct 1 at the opening of the cable tube 2 with the cable element 5 to be pulled out, the device 10 can be particularly simple and easy to set up and quickly arranged in the cable duct 1 and removed again from this.

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• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Electric Cable Installation (AREA)
• Light Guides In General And Applications Therefor (AREA)
• Bridges Or Land Bridges (AREA)
• Laying Of Electric Cables Or Lines Outside (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=41404399

Family Applications (1)

Country Status (8)

Cited By (2)

Families Citing this family (7)

Citations (6)

Family Cites Families (9)

• 2008
  • 2008-09-08 AT AT0139008A patent/AT507239B1/de not_active IP Right Cessation
• 2009
  • 2009-09-07 KR KR1020117007858A patent/KR20110056311A/ko not_active Withdrawn
  • 2009-09-07 WO PCT/AT2009/000350 patent/WO2010025489A1/de not_active Ceased
  • 2009-09-07 US US13/062,422 patent/US20110168959A1/en not_active Abandoned
  • 2009-09-07 JP JP2011525372A patent/JP2012502603A/ja active Pending
  • 2009-09-07 EP EP09775628.2A patent/EP2324546B1/de not_active Not-in-force
  • 2009-09-07 CN CN2009801351750A patent/CN102150336A/zh active Pending
  • 2009-09-07 CA CA2735468A patent/CA2735468A1/en not_active Abandoned

Patent Citations (6)

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