GB2397284A - Apparatus and method for pulling a line or a boring tool along a sewer hole - Google Patents

Apparatus and method for pulling a line or a boring tool along a sewer hole Download PDF

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Publication number
GB2397284A
GB2397284A GB0401179A GB0401179A GB2397284A GB 2397284 A GB2397284 A GB 2397284A GB 0401179 A GB0401179 A GB 0401179A GB 0401179 A GB0401179 A GB 0401179A GB 2397284 A GB2397284 A GB 2397284A
Authority
GB
United Kingdom
Prior art keywords
cable
line
pulling
winch
linear drive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB0401179A
Other versions
GB0401179D0 (en
GB2397284B (en
Inventor
Franz-Josef Puettmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tracto Technik GmbH and Co KG
Original Assignee
Tracto Technik GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tracto Technik GmbH and Co KG filed Critical Tracto Technik GmbH and Co KG
Publication of GB0401179D0 publication Critical patent/GB0401179D0/en
Publication of GB2397284A publication Critical patent/GB2397284A/en
Application granted granted Critical
Publication of GB2397284B publication Critical patent/GB2397284B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/02—Driving gear
    • B66D1/08—Driving gear incorporating fluid motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/006—Power actuated devices operating on ropes, cables, or chains for hauling in a mainly horizontal direction
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
    • E21B19/084—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods with flexible drawing means, e.g. cables
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/28—Enlarging drilled holes, e.g. by counterboring
    • E21B7/30—Enlarging drilled holes, e.g. by counterboring without earth removal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
    • F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
    • F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
    • F16L55/1652—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section the flexible liner being pulled into the damaged section

Abstract

Pull-cable apparatus for pulling a line [42, FIG3] or a boring tool [44, FIG4] into a scewer 48, using a cable winch 36 and a linear drive 4,6, in which the pulling action is configured more effectively by the cable winch, having a tension-controlled switch for connecting up the linear drive, when the tension is above a predefined maximum loading. When the linear drive is in operation the device has at least one clamp 20 for pulling the cable and either the winch or a further clamp 28 hold the cable while clamp 20 releases it's grip in order to relocate for the next pulling stroke. The apparatus is further assisted with pulley means 28 that modify the direction of the tractive force exerted by the cable 26.

Description

-
Apparatus and method for pulling a line or a boring _ol into a sewer The invention relates to pulling a line or a boring tool into a sewer, using a plurality of drives.
DE 100 11 994 C1 discloses a method of pulling a line or a boring tool into a sewer, in which a percussive forward drive device with a bursting head is connected via a cable to a pull-cable apparatus arranged vertically in a boring trench. When the bursting device is driven forward, the old line located in the ground is destroyed and can be replaced by a new line. The cable is fixed to the tip of the bursting head and is led over a deflection roller of the pull-cable apparatus vertically through the trench to a coil on the surface of the ground. The pulling apparatus has two independent pulling means which, in each case, act on the cable by means of clamping jaws. The clamping jaws can be moved by hydraulic cylinders. By means of alternately clamping, moving and releasing the clamping jaws, the cable is drawn out of the sewer, and the bursting head connected to the cable is pulled into the sewer or through the sewer.
The disadvantage with the apparatus disclosed by DE 100 11 994 C1 is that the alternative actuation of the clamping jaws is very time-consuming. For example, driving the boring tool forward in the sewer depends on the contraction or expansion stroke of the hydraulic cylinders connected to the clamping jaws. In addition, it requires a great deal of power to be expended per line section in order to move the hydraulic cylinders.
DE 199 60 773 C2 discloses a pull-cable apparatus in which a linear drive interacts with a cable drum. The cable drum has an axle aligned transversely with i e À À À À .* se' - 2 - respect to the longitudinal direction of the linear drive. In this case, a pull cable is led with at least a single wrap around the cable drum before it runs into a cable winch of conventional design. As the cable is pulled, the cable drum is displaced linearly and fixed.
The pulling forces of the cable in this case act primarily on the cable drum.
Using this arrangement, the intention is to avoid bearing damage, which frequently occurs on the capstan head because of high tensile forces.
Against this background, the invention is based on the object of providing an apparatus and a method for pulling a line or a boring tool into a sewer, in which the load on a winch can be relieved in an optimum] manner.
This object is achieved by the subject-matter of the independent claims. Advantageous refinements are specified in the subclaims.
With the apparatus according to the invention, an automated sequence of the pulling-in action can be achieved without manual actions having to be taken in order to change over from the cable winch to the linear drive. t According to the invention, when a line or a boring i tool ("body" in the following text) fixed to a cable is being pulled in, first of all the winch can be used.
In this way, the body can be introduced into the sewer with little effort and can be pulled with little resistance. Once a maximum tensile loading on the winch has been achieved, the further forward drive of the line or the boring tool can be continued by using the linear drive. In this way, a cost-effectiTe, À: Àe.. ;: À i À. - 3
- commercially available winch can be employed, which can be driven with care only up to a desired tensile loading. In this case, the cable can be connected to the linear drive via a clamp.
In the sense of the invention, "pulling in" is to be understood to mean both the introduction of the line or of the boring tool into the sewer at the end and also the progressive pulling through of the line or boring tool already introduced at the end.
In this case, the body considered is any type of line, pipe linkage, including long and short pipes and bursting or widening heads that destroy old pipes, motor-driven boring tools or, for example, boring, cutting, milling or percussive tools, various types of reamers or other forward drive elements.
"Sewer" is to be understood to mean any type of bore to be widened, including a pilot bore, a laid pipe including a pipe to be burst or which has burst or is to be split.
The term "cable" stands for any type of flexible pulling means, in particular including pulling chains.
The loading of the winch can be determined by measuring the torque necessary to rotate the winch. The winch is preferably driven hydraulically. In this case, the measurement can then also be carried out via the hydraulic pressure. Furthermore, a hydraulic control loop can be provided, which covers the linear drive and the winch drive.
In order to connect the linear drive to the cable, suitable fixing means are, in particular, clamping jaws or else pawls or pins that engage in chain rings of a :::: a.: :.
À : : . cable designed as a chain. Furthermore, the fixing means can be arranged on the linear drive in such a way that the said means is moved by means of the linear drive in order to move the cable. The winch can also be blocked in order to connect the linear drive. If the blocked winch is used as a clamp, the winch itself can be displaced by the linear drive and, in this way, can effect pulling of the cable.
The "linear drive" in question is any type of drive which can effect a linear movement of a fixing means that holds the cable, in particular a clamp. This is preferably a piston-cylinder unit. In particular, the use of a conventional push/pull device, as described in DE 41 031 96 Al, for example, as a combination device with a pull-cable apparatus as described in DE 111 994 Al is advantageous. In this case, the linkage pull or push drive is either configured in such a way that the pulling elements for the cable can be retrofitted to the linear drive or are already provided on the linear drive beside the linkage pull and push device.
While the cable is being pulled by means of the linear drive, the winch can continue to be operated in order to wind up the cable pulled in by the linear drive.
In particular when short pipes are being pulled in, according to the invention, the cable can be connected to the end of the line or the boring tool which is at the rear in the forward drive direction. After the short pipe has been pulled in, the cable can be pulled back by the amount of the pipe length in order to introduce a next short pipe.
The work of pulling the linear drive in can additionally be assisted by a thrust cylinder, which can be connected, preferably by a form fit, to the end À . À À e À À e see e À ..
À .. . À À À - 5 - of the line or of the boring tool which is at the rear in the forward drive direction. Furthermore, the thrust cylinder can be connected to a boring tool (widening head) in order to pull a line into the sewer.
The thrust cylinder used can be, for example, a pivoting cylinder provided in the starting trench or another cylinder, for example situated in the new pipe and supported on the new pipe. In particular, the use of a linear drive for pulling in the line with a thrust cylinder for pushing in the line provides the advantage that the shaft walls of a start and a destination trench have to be acted on with only low forces, since the force needed for pulling or pushing the pipe in is distributed to apparatus in both shafts. The thrust cylinder can be incorporated in the hydraulic control loop. In this way, the forward drive of the body can be carried out and also automated with one or more drives which are coordinated with one another or can be connected up.
Furthermore, the method according to the invention can be used for drawing a plurality of new pipe elements into the sewer. For this purpose, a steel cable can be pulled from the destination trench through the sewer to the starting trench. The new pipe elements to be introduced are threaded onto the steel cable outside the shaft and are in each case connected to the steel cable by a clamp behind each new pipe element to be pulled in, in order to transmit tensile forces. By means of pulling the cable by using the winch or the linear drive, the new pipe elements are introduced into the sewer. Alternatively, the new pipe elements can be introduced individually into the sewer, the cable being pulled back into the starting trench following the introduction of an individual new pipe and connected to a further new pipe.
À . - e:.: . . À.: : :.
A. À . À .e À.* - 6 - In the following text, the invention will be explained in more detail using exemplary embodiments which are illustrated in the drawing, in which: Fig. 1 shows a linear drive with a winch in a schematic side view, Fig. 2 shows the linear drive according to fig. 1 with a cable clamp, Fig. 3 shows the pulling system according to the invention in a first configuration, Fig. 4 shows the pulling system according to the invention in a second configuration, Fig. 5 shows the pulling system according to the invention in a third configuration, and Fig. 6 shows the pulling system according to the invention in a fourth configuration.
The linear drive 1 illustrated in fig. 1 has a frame 2, a carriage 4 arranged on the frame 2 and a hydraulic drive 6. The carriage 4 can be moved to and fro on the frame with the aid of the hydraulic drive 6. At the basic equipment level, the linear drive 1 illustrated in fig. 1 is used for the horizontal forward drive of elongated bodies and boring tools with the aid of a push-pull linkage, which is laid in the frame 2 and, connected to the carriage 4 by means of a chuck 8 and via a bush 10, is introduced into the ground or drawn out of the ground. This linear drive 1 is now configured in such a way that, in addition to the use for pushing and pulling sections of a linkage, it is also provided for the pull cable. iÀ . iÀ .
! e e À À. À . À .e Àe. À - 7 For this purpose, the frame 2 is constructed in such a way that the following components described here can be connected to the said frame retrospectively, so that, following the conversion, the linear drive 1 has the design illustrated in fig. 1 for pulling cables.
However, the components can also be provided on the frame 2 from the start.
To this end, the basic frame 2 is provided with cable clamps 20, 22 (fig. 1) for pulling and for holding the tension cable 26. The tension cable 26 is led over a deflection roller 28. The frame 2 also carries a winch 36, which can wind up the cable 26.
As figure 1 shows, the cable 26 can be held by the clamp 20 likewise connected to the carriage 4, the clamp 22 being open. The cable 26 is pulled by moving the clamp 20 in the direction of the arrow A. After the I stroke has been completed, the cable can be held by the clamp 22, the clamp 20 can be opened, the clamp 20 moved towards the deflection roller 28 and the length of cable pulled in can be wound up by the winch 36.
In figure 2, the winch 36 performs the holding function of the clamp 22.
As can be seen in fig. 3, the cable 26 is connected via a clamping plate 40 to the end of a line 42 which is at the rear in the forward drive direction. At the end of the line 42 which is at the front in the forward drive direction, a widening head 44 is provided. The clamping plate 40 is also connected to a haul-back apparatus 46. t In order to introduce the lines 42 into an existing sewer 48 (hole in the ground), the cable 26 is wound up by the winch 36. Shortening the cable 26 has the À e. : . À. :.: . À.: À À ..
effect that the clamping plate 40 is moved in the direction of the hole 48 in the ground, as a result of which the line 42 is pulled into the hole in the ground. If, by measuring the torque that drives the winch 36, it is established that a predefined maximum loading of the winch 36 has been reached, the cable 26 is clamped by the clamp 20 and is drawn further away from the deflection roller 28 by moving the clamp 20.
This achieves the situation where the line 42 can be pulled into the sewer 48 even when particularly high frictional forces act on the circumferential surface of the line 42 or on the widening head 44.
If, after the line 42 illustrated in fig. 3, a further line, not illustrated, is then to be pulled in, the clamping plate 40 can be pulled back into the starting trench 50 by the haul-back apparatus 46. Here, the line to be newly introduced is attached to the line 42 already introduced. The clamping plate 40 is attached to the end of this line to be newly introduced. By means of winding up the cab]e 26 again, the new line is likewise introduced into the sewer 48.
Figures 4, 5, 6 show further possible uses for the pulling system according to the invention, whilst maintaining the same reference symbols for structural elements of the same type. According to fig. 4, a long, flexible pipe 42 is introduced into the sewer 48 by pulling the cable 26 in as previously described.
The flexible line 42 is in this case guided into the starting shaft 50 by a feed bore 52 led obliquely through the ground.
According to fig. 5, short pipes 42 are threaded onto the cable 26 and are connected to this tension cable 26 via a clamping plate 40. The short pipes 42 are :::À: À:.À: À. À :.. - 9
introduced into the sewer 48 by pulling in the tension cable 26, as previously described.
A further possibility of aligning short pipes 42 with the axis of the sewer 48 is provided by a pipe lift 54, as illustrated in fig. 6. A thrust cylinder 56 can be provided on the pipe lift 54. This can assist the action of drawing the short pipe 42 into the sewer 48.
In the embodiment illustrated in figure 6, the tension cable 26 is connected to the front end of the widening head 44. The widening head 44 is connected in a tension-proof manner to the short pipe elements 42 arranged behind it and can pull the latter into the sewer 48. This pulling-in action is assisted by the thrust cylinder 56 causing a thrust force to act on the short pipes already in the sewer 48 when a further short pipe 42 is attached to these short pipes. À À - .

Claims (9)

  1. . :.: . . À.: À À :.. - 10
    Patent claims: 1. Pull-cable apparatus for pulling a line or a boring tool into a sewer, using a cable winch and a linear drive, characterized in that the cable winch (36) has a tension-controlled switch for connecting up the linear drive (1).
  2. 2. Pull-cable apparatus according to Claim 1, characterized in that the cable winch (36) has a hydraulic drive (6) having a pressure meter for determining a predefined maximum pressure.
  3. 3. Pull-cable apparatus according to Claim 1 or 2, characterized by an additional thrust drive which is arranged in such a way that the thrust force is transmitted from the rear to the line (42) or the tool.
  4. 4. Pull-cable apparatus according to Claim 2 or 3, characterized in that at least two drives are incorporated into a common control loop, the action of connecting and/or disconnecting the drives following the pressure measurement.
  5. 5. Pull-cable apparatus according to one of the preceding claims, characterized in that the linear drive (1) has clamps (20, 22) which are to be connected to a cable and act only in the pulling direction.
  6. 6. Method of pulling a line (42) or a boring tool into a sewer, characterized by fixing a cable (26) to the line (42) to be pulled in or to the boring tool to be pulled in, ::: A: À:. À: : À: . :.. :: - 11 pulling in the line (92) or the boring tool by winding the cable (26) onto a winch (36), pulling the cable (26) by means of a linear drive (1) when a predefined maximum loading of the winch (36) is reached. /
  7. 7. Method according to Claim 6, characterized in that, in order to pull the line (42) or the boring tool, a block and tackle (30) connected to the linear drive (1) is used.
  8. 8. Method according to Claim 6 or 7, characterized in that the cable (26) is fixed to the end of the line (42) or the boring tool which is at the rear in the forward drive direction.
  9. 9. Method according to any one of Claims 6 to 8, characterized in that a thrust force is applied by a thrust cylinder from the rear to the line (42) or the boring tool in the forward drive direction.
GB0401179A 2003-01-20 2004-01-20 Apparatus and method for pulling a line or a boring tool into a sewer Expired - Fee Related GB2397284B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2003102194 DE10302194B3 (en) 2003-01-20 2003-01-20 Device and method for pulling a line or a drilling tool into a channel

Publications (3)

Publication Number Publication Date
GB0401179D0 GB0401179D0 (en) 2004-02-25
GB2397284A true GB2397284A (en) 2004-07-21
GB2397284B GB2397284B (en) 2006-04-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB0401179A Expired - Fee Related GB2397284B (en) 2003-01-20 2004-01-20 Apparatus and method for pulling a line or a boring tool into a sewer

Country Status (2)

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DE (1) DE10302194B3 (en)
GB (1) GB2397284B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011083085A1 (en) * 2010-01-07 2011-07-14 Tracto-Technik Gmbh & Co. Kg Method for rehabilitating an old pipe, and system for carrying out such a method

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007015287A1 (en) 2007-03-29 2008-10-02 TERRA AG für Tiefbautechnik Cable pulling device for use in laying or renewing pipes in the ground
DE102007049605B3 (en) * 2007-10-16 2009-04-30 Karosan Gmbh Innovative Kanal- Und Rohrleitungssanierung Method and device for drawing a pipe string composed of short pipes into a drilling channel with tensile force measurement
DE102007049606B4 (en) * 2007-10-16 2011-08-25 Karosan GmbH innovative Kanal- und Rohrleitungssanierung, 66557 Method and device for drawing a pipe string composed of short pipes into a drilling channel
DE102010045126A1 (en) * 2010-09-11 2012-03-15 Rehau Ag + Co. Earth probe assembly for earth probe-mounting device, has wall that is extended up to propulsion head arranged at one end of shaft, so as to form hollow cylinder between earth probe and shaft

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2037693A (en) * 1978-12-21 1980-07-16 Standard Telephones Cables Ltd Cable handling apparatus
US4552339A (en) * 1983-06-06 1985-11-12 Hydraudyne B.V. Hoisting device with compensated tackle
US4828233A (en) * 1987-07-31 1989-05-09 Webster Spring Co. Inc. Bent wire spring module with lock
LV12649B (en) * 2000-05-17 2001-05-20 Suis-Rīga, Sia Method for trenchless replacement of pipe-line and device for realization thereof
WO2001040699A1 (en) * 1999-12-02 2001-06-07 Tracto-Technik Gmbh Cable tensioning device for bursting/flaring devices
WO2003004823A1 (en) * 2001-05-25 2003-01-16 Tracto-Technik Gmbh Cable pull device for pulling in pipes

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10011994C1 (en) * 1999-12-02 2001-07-19 Tracto Technik Cable pulling device for bursting / expanding devices
DE19960773C2 (en) * 1999-12-16 2002-02-07 Mario Ende cable device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2037693A (en) * 1978-12-21 1980-07-16 Standard Telephones Cables Ltd Cable handling apparatus
US4552339A (en) * 1983-06-06 1985-11-12 Hydraudyne B.V. Hoisting device with compensated tackle
US4828233A (en) * 1987-07-31 1989-05-09 Webster Spring Co. Inc. Bent wire spring module with lock
WO2001040699A1 (en) * 1999-12-02 2001-06-07 Tracto-Technik Gmbh Cable tensioning device for bursting/flaring devices
LV12649B (en) * 2000-05-17 2001-05-20 Suis-Rīga, Sia Method for trenchless replacement of pipe-line and device for realization thereof
WO2003004823A1 (en) * 2001-05-25 2003-01-16 Tracto-Technik Gmbh Cable pull device for pulling in pipes

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011083085A1 (en) * 2010-01-07 2011-07-14 Tracto-Technik Gmbh & Co. Kg Method for rehabilitating an old pipe, and system for carrying out such a method
GB2488952A (en) * 2010-01-07 2012-09-12 Tracto Technik Method for rehabilitating an old pipe, and system for carrying out such a method
US8857475B2 (en) 2010-01-07 2014-10-14 Tracto-Technik Gmbh & Co. Kg Method and system for rehabilitating an old pipe
GB2488952B (en) * 2010-01-07 2015-08-05 Tracto Technik Method for rehabilitating an old pipe, and system for carrying out such a method

Also Published As

Publication number Publication date
GB0401179D0 (en) 2004-02-25
DE10302194B3 (en) 2004-08-19
GB2397284B (en) 2006-04-05

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Effective date: 20120120