Process and device for inspecting and/or servicing and repairing subsidiary canals branching off from a main drain.

Translation of description of equivalent WO 9405989 A1

Method and apparatus for inspection and / or repair of Wart¬ UNG and secondary ducts that branch from a main channel

The invention relates to a method and an apparatus deviations for Kanaluntersu¬ with a camera probe.

In the investigation of sewers and the like, it is known to introduce a mounted on a self-propelled carriages or on a push rod television camera into the channel, so that the wall of the sewer pipe can be inspected with the aid of the television camera. To this end, the television is camera connected by a cable to a monitor installed outside the duct.

On the other hand, for removal of blockages or cleaning of channels known a display fittings with nozzles jetting lance ren introduce into the canal and to clean the sewer pipes with high pressure of the flushing lance abgegebe¬ nen water jets.

In the investigation of Kanalsytemen is occasionally a need to inspect not only the main channel, but to penetrate with a camera probe into the branching off from the main channel sub-channels with a narrower cross-section.

For this purpose it is known to the camera Ren montie¬ on a steerable carriage which can be directed into it in the side channels. However, this is only possible if the secondary ducts that branch off laterally from the main channel. In addition to channels, the hen upwards or obliquely upwards filtered off with from the main channel, can not be achieved in this way. Another drawback consists of the fact that the friction resis tand the redrawn by the camera car cable to the Abknickstellen considerably increased, so that the tension of the relatively small and lightweight camera car is not enough to penetrate deep into the side channels. In addition, the camera car can easily get stuck on obstacles.

In another known system a drivable drum is installed on the movable in the main channel channel carriage, on a semi-rigid connecting rod is wound with which lets a small camera probe advance in the secondary channels. However, only relatively low penetration depths, as can be overcome no big Eindringwiderstände due to the flexibility of the push rod Also in this process. From DE 38 03 274 Al and DE 91 05 211 Ul are methods and Vorrichtun¬ gene for examination of secondary ducts according to the preamble of An¬ claim 1. or of the first apparatus claim 3 are known in which ei n conventional camera dolly having a deflecting frame with Deflection provided rolls and drive with which arranged at the front end of a flexible shaft or a semi-rigid camera cable camera whose Ob¬ is objectively normally directed towards the axis of the main drain pipe to the front, swivel in a branching side channel and then to the camera cable or the shaft can advance in the side channel. In this method, however, also the above-mentioned problems occur, so that one can penetrate only a limited distance in the sub-channel.

In DE 38 77 721 T2 a jet nozzle is described, with which a can drive for the investigation of sewer pipes serving Kamer car after Rücksto߬ principle. However, this rebound driven camera car is not suitable for use in secondary channels, because it is not agile enough and can not be hineindirigiert in branching secondary channels, more particularly then cially not when the secondary channels depart obliquely upwards from Hauptka- nal.

The invention has for its object to provide a method and device Vorrich¬ which allow to penetrate with the camera probe deeper into the branching off from the main channel side channels and to overcome any obstacles se.

This object is achieved paint having the features indicated in claims 1 and 3. FIG.

According to the camera probe is provided with thrusters and closed ange¬ to a tube for feeding a pressure medium to the thrusters. The propulsion of the camera probe by the reaction principle can be with little constructional effort and in extremely small Abmes¬ measurements of camera probe generate a high driving force, so that the camera rasonde easily penetrate into narrow side channels, overcoming large gradients and the camera cable and the can tighten hose for the print media over long lengths. Unlike Kamerawa¬ gen with driven wheels or caterpillar, the driving force is not affected by a slippery dirt coating on the channel walls. Other hand, since the driving force is generated immediately to the camera probe, is the risk that the probe of projections or offsets in the depend channel wall remains substantially less than in systems in which the probe is advanced to a push rod.

The pressure medium to generate the necessary recoil can be used both compressed air and water. Especially when Ver¬ use of water to clean the tube walls is achieved simultaneously. It is therefore possible for example to clean the pipe wall when retracting the Ka¬ merasonde and then to inspect upon retraction of the probe freed from encrusted dirt tube wall so that Schadstel- len can be better recognized.

Advantageous developments and refinements of the invention are indicated in the dependent claims.

the recoil nozzles are preferably arranged on a ring which surrounds the housing was¬ serdichte a conventional camera probe at its circumference at a slight distance towards the front end, and the nozzle openings are obliquely directed towards the pipe wall rearwardly. This construction ensures that the camera probe is held by the jets on distance from the pipe wall, so that protuberances and unevenness of Rohr¬ wall can be overcome more easily and the camera lens is we¬ niger slightly dirty. In addition, an approximate self-centering of the camera probe is also in sewer pipes, whose inner diameter is considerably larger than the diameter of the de Kamerason¬ reaches to the tube axis, so that the pipe wall over its entire circumference can be easily inspected alike.

Moreover, it is advantageous to integrate the camera cable directly into the tube for the pressure medium, so that by the probe, only a single comparison needs to be retightened sorgungsstrang. For example, run merakabel through the interior of the hose the Ka¬, or the wires of the camera cable can be inte¬ grated into the pressure-resistant shell of the hose.

On the other hand, it is conceivable to connect to the camera probe more tubes with correspondingly smaller cross-section, so that individual Rück¬ groups of thrusters can be controlled separately or shock nozzles. This steerability of the camera probe is achieved, so that it is possible the probe into conduct in the side channels. The same effect can also be achieved in that one or more electrically, hydraulically or operated by cable valves to control the thrusters are arranged in the camera probe, or that swiveling thrusters are provided.

Another currently viewed as particularly advantageous way, the camera probe Ren to dirigie¬ into the branching from the main channel secondary channel, is that in the main passage at the branching point of the Nebenka¬ Nals a deflecting frame is fixed, the head of the camera in the sub-channel.

In the simplest case, the deflecting frame consists of a cylindrical block, whose cross-section corresponds approximately to the cross section of the main channel and is chamfered at its rear end so that it forms a guide face for the camera probe. The block is inserted with an eccentrically angeordne- th push rod in the main channel before the camera probe is inserted into the main channel. When using the camera probe a Ab¬ discovered branch on the main canal, so the block is retained on the push rod and rotated so that its guide surface is directed benkanal on the branching Ne¬. Subsequently, the camera tube is slackened so that the camera probe penetrates into the side channel.

In another embodiment, the deflecting frame on a camera dolly herkömm¬ union is mounted to the main channel. In this case, the camera tube for to be introduced into the sub-channel camera probe can be unwound from a mounted on the camera car drum or, if the hose is fed from the tray out, capstan or the like can be traced from the camera trolley by means of a Klemm¬. The thrusters on the camera probe then only need to Reibungswi¬ resistance of passing through the sub-channel tube section to be overcome.

The drive system of the main drain camera carriage must have good traction in this case, however, because in addition to the cable of the main channel Ka¬ mera also the hose and if necessary the separate cable for Nebenkanal- camera probe must be tightened through the main channel and außer¬ the additional drive in the tube tensile forces on the Kamerawa¬ gen be exercised. It is therefore advantageous to brace the cart camera with a function of the tensile force spreadable claws or feet role in the main channel. According to a particularly advantageous embodiment of the inventive process on the provided with thrusters camera probe instead of the actual camera or in addition to a locating device ange¬ introduced whose locating signals can be above ground surveyed and thus indicate the position of products imported into the canal probe. In this way, the position of the detected using the camera damaged areas can precisely measured. If a combination of camera and tracking device is gear¬ processed, can be created simultaneously in a single operation with the Untersu¬ law of the state of the channels also accurate and detailed maps of the channels. This planning of rehabilitation work in a strength determined by channel sub Chung rehabilitation needs will wesent¬ Lich easier. The measurement data obtained by means of the locating device can be electronically ver¬ in a CAD system for creating the maps works, and the data thus obtained can be entered into an electronic channel register, so that the in the cadastral aufgenom¬ Menen main channels anytime accurate information on the situation and the condition of the secondary channels are available.

In the following preferred embodiments of the invention will be explained in more detail with reference to the drawings.

Show it:

Fig. 1 shows an embodiment of the inventive device in a main channel, from which branches off an auxiliary channel,

Figure 2 is a schematic end view of the main channel camera carriage.

Figure 3 is a partial longitudinal section of the camera carriage according to FIG. 3;

Fig. 4 is a side view of an apparatus according to another embodiment;

Figure 5 is an end view of the device of FIG. 4;

Figure 6 is a section through a mount for a camera probe in the apparatus of FIG. 4; Fig. 7 is a section through a pipe branch with a deflecting block for a camera probe;

Fig. 8 is a arranged in a tube of the camera probe towing nozzle;

FIG. 9 is an axial section advises by a camera probe with Ortungsge¬;

FIG. 10 is a front view of the camera probe of Figure 9; and

Fig. 11 is a section through a camera probe with locating device according to a modified embodiment.

1 shows a longitudinal section through a main sewer pipe 10, from which a subsidiary canal pipe 12 branches off upwards. Within the main passage pipe 10, a camera dolly 14 is moved, the construction of which is known in principle and is therefore of the in the drawing, only the rear part provides darge. At the front end of the camera carriage 14 has a main channel camera, not shown, for the inspection of the main drain pipe 10 is mounted. Of the camera carriage 14, a cable not shown through the Hauptkanal¬ pipe 10 to a shaft, starting from the from the camera carriage 14 wur¬ de. This cable of the drive of the camera carriage with power ensures it is mixed, and also the signals of the main channel and camera control are ersignale transmitted by this cable for the operation of the camera and the camera carriage 14th

At the rear end of the camera carriage 14 a shaft 16 is mounted, the 18 around their parallel to the axis of the main drain pipe 10 extending axis is rotatable by means of an electric or hydraulic motor. The shaft 16 is flattened at its rear end and forms a platform 20 on which a deflecting frame 22 is mounted for a camera probe 24 for inspecting the tube Nebenkanal- 12th

The deflecting frame 22 is essentially formed by a tubular carriage 26 which is pivotally supported by a hinge 28 with the shaft 16 ver¬ prevented. The pivoting movement of the carriage 26 is controlled by a hydraulic cylinder or the Luftzylin¬ 30th The camera probe 24 comprises a waterproof housing of known type, which receives a television camera, not shown, such that a is detected in front of the end face of the camera probe, the top right in Figure 1, situated area with a relatively wide opening angle of the camera. In the state shown in Figure 1 is thus the opening of the side-channel tube 12 in view of the camera in the camera probe 24th

The housing of the camera probe 24 is surrounded by a nozzle ring 32 having a number of obliquely outwardly and rearwardly directed with respect to the axis of the camera probe 24 nozzle openings 34th The Düsen¬ wreath 32 is connected to the rear end of the camera probe 24 with a hoch¬ flameproof hose 36, via which a pressure medium beispiels¬ water as is supplied under high pressure so that it jetted emerges from the nozzle openings 34 as shown in Figure is metabolised - 1 by jets 38 sy. A camera cable 40 for the power supply of Kamerason¬ de 24 and the transmission of camera signals is inte¬ grated into the hose 36th At the bottom of the carriage 26 are two guide rollers 42 angeord¬ net, take the hose 36 between them. In addition, the hose 36 is clamped between two drive rollers 44, which are mounted on the platform 20 and a untergebrach¬ in the shaft 16 th motor not shown and a purely strichpunk¬ Animal T in the drawing, indicated gear 46 are driven in opposite directions.

Two other drive rollers 48 with associated transmission 50 are arranged opposite the drive rollers 44 is displaced upward on the platform 20 and take a flushing hose 52 between them on. The flushing hose 52 passes through an externally mounted on the carriage 26 guide channel 54 in the subsidiary canal pipe 12 and carries at its free end a rinsing nozzle not shown to clean the auxiliary channel tube.

The deflecting frame 22 as a whole is designed and arranged so that it is also used in different pivot positions of the carriage 24 in a main drain pipe 10 with a relatively narrow cross-sectional area. If in narrow ducts Ka¬ the camera carriage 14 itself is not free of leaves enough space for the attachment of Umlenkgestells, the deflecting frame can also be designed as a kind An¬ trailer to the camera car.

The following the operation of the device described above er¬ be explained. The self-propelled camera carriage 14 moves in the femgesteuert Hauptkanal¬ pipe 10 a, to the mounted on the front end of the camera carriage Haupt¬ channel camera detects the branch of the sub-channel tube 12th Based on the Ka¬ merabildes on the monitor, the operator controls the motor 18 such that the shaft 16 is rotated so that the azimuth of the mount 26 coincides with the azimuth of the mouth of the side channel tube 12th On closing the camera carriage 14 is further moved forward, while the signal provided by the camera probe 24 image observed by the camera carriage reaches the position shown in Figure 1 and the mouth of the side-channel tube 12 appear on the connected to the camera probe 24 screen. With the help of the hydraulic cylinder 30, the carriage 26 is then pivoted so that its axis extends approximately parallel to the axis of the sub-channel tube 12th

Thereafter, by means of the drive rolls 48 of the irrigation tubing 52 ausgefah- reindeer, so that the rinse nozzle attached thereto is passed through the guide channel 54 in the subsidiary canal pipe 12th The correct insertion of Spülschlau¬ Ches 52 into the subsidiary canal pipe 12 may be monitored über¬ using the camera probe 24th Thereafter, the subsidiary canal pipe 12 is purged Ches 52 using the Spülschlau¬. If the subsidiary canal pipe going upwards, as shown in Figure 1, it is expedient to dolly a piece vorzufah¬ ren (to the right in Figure 1), so that the camera probe 24 is not contaminated by the out-running from the subsidiary canal pipe 12 rinsing water before. The forward movement of the irrigation hose 52 in the subsidiary canal pipe 12 is caused in part by the drive rollers 48 and also by the recoil of the rinsing nozzle not shown. After the subsidiary canal pipe 12 is gesäu¬ bert, the irrigation hose 52 is withdrawn until the end provided with the washing nozzle is located in the guide groove 54th The dolly 14 is positioned so that the mouth of the tubular carriage 26 exactly to the Ach¬ se of the sub-channel tube is directed 12th

Subsequently, when the pressure of water supply via hose 36 eingeschal¬ tet is so penetrates the camera probe 24 due to the generated by the jets 38 recoil the subsidiary canal pipe 12 in front, and the previously gesäuber¬ te pipe wall can be inspected using the camera. During the fast forward of the camera probe drive 24 of the tube 36 by means of Antriebsrol¬ 44 tightened len, so that the An¬ generated using the thrusters 34 driving force only for the roll between the camera probe 24 and the drive input 44 located portion of the hose 36 is required. By the guide rollers 42 ensures that the tube 36 is not at the Edge of the mount is damaged 26th

In the manner described above, with the help of erfindungsgemä¬ KISSING device side channel tubes inspect up to a great depth, whereby the device by rotation of the shaft 16 and pivoting the storage-fat 26 can be adapted to any outlet directions of the sub-channel tube. If the examination of a side-channel tube is completed, the camera probe 24 is drawn back into the position shown in Figure 1, and the camera carriage 14 moves to the branch of the next Nebenkanalroh- res, where similar testing procedure is repeated. The Antriebsrol¬ lenpaare 44 and 48 can be fixed in such a way for example by using selbsthal¬ tender drive motors or by appropriate couplings or locking mechanism that the tubes 36 and 52 being held and tightened in the forward running of Ka¬ merawagens 14th

Because of forward motion of the camera carriage 14 except the two tubes 36 and 52 and the power supply cable not shown must be tightened for the camera carriage 14, can at long main canal routes rela¬ tively high tensile forces occur, so that the camera carriage 14 must have a correspondingly good traction. Moreover, it may also during the driving of the tubes 36,52 with the aid of pairs of drive rollers 44 and 48 are necessary, the camera carriage 14 to firmly fix the main drain pipe 10 to absorb the reaction forces. For these purposes, the construction of the camera carriage 14 schematically shown in Figures 2 and 3 is suitable.

According to Figure 2, the camera carriage 14 includes a cylindrical housing 56, extending from its circumference in the radial direction at least three kelabständen in uniform Win¬ arranged roller feet 58th Each reel foot 58 carries at the free end two in the axial direction of the housing 56 arranged one behind the other roller sets 60, each with two rollers 62 which roll on the inner surface of the main drain pipe. The housing 56 is thus maintained sewer pipe coaxially in the Haupt¬. The role feet 58 are preferably adjustable in length or telescoping and biased outwardly so that the channel carriage 14 can be adapted to different pipe diameters.

least Each roller set 60 includes a driven roller 62, so that a uniform driving of the camera carriage 14 also provides yet sicherge¬ is when one of the sets of rollers 60 temporarily in contact with the inner pipe wall loses, for example when driving over a branch. Of the Distance between the sets of rollers 60 of each roller foot is preferably greater than the diameter of the branching off of the main channel tube Ne benkanalrohre. Optionally, there are 60 lenpaaren of several Rol¬ each roller set that against each other in the longitudinal direction of the main drain pipe are offset. A the roller sets 60 each connecting frame 64 is preferably pivotally mounted on the shaft of the roller foot 58 mounted so that the rollers 62 can roll over obstacles such as better away incrustations on the pipe wall or offsets at coupling joints.

Since the channel carriage 14 can be firmly braced in the main drain pipe with the structure shown in Figure 2, relatively high tensile forces can be aufge¬ taken.

Figure 3 shows a mechanism by which can be the contact pressure of the roller sets 60 against the bare wall, depending on the traction strengthen. The reel foot 58 has an outer tube 66, in the one with the Rah¬ men 64 associated push rod 68 is displaceably guided. The Druckstan¬ ge 68 extends into the interior of the housing 56 and is supported there with an inclined surface 70 on a cone 72 from. The cone 72 is coaxially retained in the housing 56 and movable in axial direction and supported in the same way, the push rods of the other two feet 58 from roll.

The forces acting on the dolly 14 tensile forces, so for example, the tensile force of the supply cable and acting on the drive rollers 44 and 48 in Figure 1 tensile forces of the tubes 36 and 52, acting through a tension spring 74 on the tapered end of the cone 72. Thus resulting increased tensile force to an axial movement of the cone 72 and therefore to a radial outward movement of the push rods 68 so that the roller sets 60 fixed ge gene the pipe wall are clamped. Instead of a mechanical Spreizme- mechanism with the cone 72 can also be provided a hydraulic Spreizmechanis¬ mechanism, which has a pressure-generating cylinder whose piston is subjected to the tensile force, and with the pressure-generating Zylin¬ the associated spreading cylinder to extend the role feet.

Figures 4 to 6 show a deflecting frame 76, which can be used independently of a Ka¬ merawagen. The deflecting frame 76 has a basket-like zylin¬ drical housing 78, whose largest diameter is slightly smaller than the inner diameter of the main sewer pipe and which is slidable in the main sewer pipe on skids 80th The drive is effected by eg a push rod which is connected to a sleeve 82 at the left end of the housing 78 can be coupled in FIG. 4 Optionally, however, may be placed on the runners 80 also acetals gated exaggerated drive wheels.

On which the sleeve 82 opposite the end housing the tubular mount 26 for the camera probe 24 (Figure 6) is articulated via a hinge 84th For pivoting the mounting 26 about the axis of the hinge 84 is a traction cable 86, which passes through ears 88 on one of the skids 80th

In the one shown in Figure 6 embodiment of the camera probe 24, the thrusters are not arranged on the periphery of the housing 92 of the camera probe, but in a separate nozzle head 90 at the rear end of Gehäu¬ ses 92nd Thus, in operation, the nozzle head 90 pushes the the Kame¬ ra female housing 92 in front of it, and the housing 92 slidably moves through the subsidiary canal pipe. Optionally, the housing 92 fen with Ku¬ be provided from slippery material or wheels so that it glides easily over bumps on the inner surface of the sub-channel tube.

The guide rollers 42 are in the embodiment not mounted on the carriage 26, but directly to an entity belonging to the housing 78 sleeve 94 of FIG. 6

Figure 7 shows an embodiment of a Umlenkgestells 96, which is characterized by a simple structure. This deflecting frame is formed by one adapted to the inner cross section of the main channel tube 10 massi¬ ven cylindrical block 98 which is insertable into the main drain pipe by means of a push rod 100th At the rear of block 98 is filtered off with bevels, and the beveled end face forming a deflecting surface 102, through which the camera probe, not shown in Figure 7 into the branching Ne benkanalrohr 12 is deflected. In the illustrated embodiment, the deflector 102 is formed by a flat cavity, which is open on the side of the side-channel tube 12 to the periphery of the block 98 and on the side of the push rod 100 flat expires. When the camera probe on the Ab¬ articular surface 102 runs, the block 98 is held by means of the push rod 100th In addition, the push rod 100 serves to block 98 in each case so as to rotate about its longitudinal axis, the deflector 102 is directed to the branching subsidiary canal pipe 12th

Optionally, it can be provided to the block 98, a spreading mechanism, which can be actuated by a second push rod and serves to clamp the block 98 in the main drain pipe 10th At the Spreizklauen of expander rollers may be provided, which roll in the circumferential direction on the inner surface of the main drain pipe 10 and are driven for example by rotation of the connecting rod, so that the block 98 can be easily and precisely rotate about its longitudinal axis.

Finally, the block 98 may be also rotatably mounted in a sleeve, not shown, which in turn can be moved axially in the main drain pipe 10th The guide sleeve may be hen verse¬ at its periphery with runners or rollers which are supported on the pipe wall.

When the camera probe has a very broad way in the main drain pipe 10 zu¬ back cover before it reaches the junction of the side-channel tube 12, can be used to overcome the then very large frictional resistance of the tube instead of the drive rollers 44 of Figure 4 also ge in Figure 8 showed arrangement be used. In this arrangement, the term rückwär¬ end of the hose 36 of the camera probe 24 is connected to a trailer-type 104, which in turn cut to a hose 106 having a larger cross-connected. The printing medium is guided through the hose zu¬ 106th The trailer-type 104 includes a valve not shown, which responds only when a certain minimum pressure such that a portion of the Druckmedi¬ killed in the form of rearwardly directed beams 108 emitted from the trailer-104, while a further part of the print medium through the hose 36 the thrusters 34 of the camera probe is supplied.

First, the camera probe 24 is propelled by the recoil nozzles 34 in the main drain pipe, which they follow suit hose 36th The pressure of the pressure medium is smaller than the opening pressure of the valve. After the camera probe was hineindirigiert into a side channel - for example, the deflecting frame shown in Figure 4 or in Figure 7, the pressure of the pressure medium is increased, so that the tube is drawn 106 by the recoil of the trailer-type 104 in the main sewer pipe. In this way, can be produced using the trailer-104 a high propulsive force, while operating in the auxiliary channel with the flexible hose 36th

Embodiments are described in which merasonde in the Ka¬ a locating device is integrated. A conventional camera probe typically comprises a substantially cylindrical camera housing meraobjektiv and optionally an additional protective disc is closed at one axial end by the Ka¬. Inside the cylindrical housing, the actual Kameramo- is dul with the camera electronics. This module is typically mounted on a Plati¬ ne and accordingly has the shape of a flat plate, whose width corresponds to the inner diameter of the camera housing. According to a Aus¬ execution of the invention, the locating device is housed in one of the two segment-shaped cavities which are formed on both sides of the camera module in the cylindrical camera housing.

In another embodiment, the locating device is accommodated in a ringförmi¬ gene housing surrounding a portion of the housing of the camera eigentli¬ Chen probe or at the rear end of this housing Removing passing cable.

Frequently, the camera probe to a camera slide which accommodates the actual camera housing and serves to guide the camera in the sewer pipe. In this case may be mounted on or in the camera carriage, the locating device.

A particularly compact design can be achieved, that is Or¬ processing device connected directly to the power of the camera, so that can be dispensed with bulky batteries to power the locating device characterized. For this purpose, the locating device is designed such that it ar¬ processed with the operating voltage of the camera, for example, 12 volts, or it is seen a physically smaller electronic voltage converter vor¬ which converts the operating voltage of the camera on the time required for the locating device voltage.

This solution also has the advantage that when lengthy Untersu¬ cations no interruptions to change the batteries for the Or¬ processing device are required.

If the camera probe an electrically driven camera pedestal auf¬ has, also the drive of the camera carriage to the common Span¬ supply for the camera and the locating device may be connected. There are compact and manoeuvrable camera according to probes are known in which the actual camera head with a plug-in coupling releasably to fixed a camera carriage, via the plug coupling at the same time, the operating voltage for driving the camera dolly is picked up by the camera head is connected directly to the camera cable. In such camera probes the locating device can be inserted with a corresponding plug-in coupling between the camera head and the camera car. swept Um¬ it is also possible, the locating device to couple separated from the camera to the camera car, so that the locating device, the operating voltage obtained from the camera car, which in turn is powered from the camera head to the operating voltage. Preferably, the electrical plug couplings are of the camera head, the locating device and the camera carriage so adapted to one another that the locating device can be connected either directly to the camera head. There is then the possibility of using the camera head with locating device optionally without dolly and example advance by means of a flexible rod in the pipe.

The camera probe shown in Figure 9. 210 has a cup-shaped housing 212, which is closed ab¬ by a frustoconical end 214 at the front end. At the rear end of the housing 212 a screwed is advertising 216 provided for a pressure hose not shown. In the wall of the housing 212 an annular chamber 218 is formed, the side end with the screw 216 is at rückwärti¬ in connection and is connected at the front end with slanted outward and rearward thrusters 220th If on the pressure hose water is supplied under proper pressure, the water is jetted through the nozzle 220 Rücksto߬ issued, and thereby the advance of the camera probe 210 and at the same time centers the camera probe is effected in the sewer pipe.

In the front part of the housing 212 and the end piece 214 a cylindrical is see it camera body 222 accommodated, which is closed at the front end by a protective plate 224th Immediately behind the protective plate 224, the camera lens 226 mounted. A camera module 228, which contains electro-optical sensors, not shown, and the camera electronics, has the shape of a flat plate-shaped component and is in the camera housing 222 mounted so that it is located in a diameter plane of the camera body, as shown in Figure 10 to identify is. The camera module 228 thus limited in the camera body 222 two cavities 230,232 with kreissegmentför- migem section. In the illustrated embodiment, a locating device 234 is housed in the cavity 230th Optionally, however, the locating device can also be divided into two modules, each one of which is housed in one of the cavities 230 and 232 interface. In this way, the locator 234 5 allows space-saving manner in the camera body 222nd

A problem associated with the camera module 228 camera cable 236 is liquid-tightly in the gezeig¬ th Example 212 out through the end wall of the housing and extends through the interior of the screw 216 and the non gezeig¬

10 th pressure hose. This camera cable 236 is used for open Weiterlei¬ direction of the camera signal to a monitor not shown, and the other hand to power the camera module 228 and the locating device 234th

15

The locating device 234 is, for example, lens forming a Langwel¬. However, the tracking device can also be formed by a transmitter for elek¬ tromagnetic waves in a different frequency range or by an ultrasonic transducer or the like. The non-specifically

20 electronics shown the locating device is designed such that it can be operated with the same voltage as the camera module 228, thus for example with a DC voltage of 12 volts.

Alternatively, the locating device 234 may, however, also as conventional or- 2 processing equipment with an operating voltage of 1, 5 and 1, 7 volts work. In die¬ case, the operating voltage can be supplied by a battery which is housed in the cavity 232 interface.

In the example shown, the cylindrical cavity in the housing 212

30 and em end piece 214 which is for receiving the camera body 222 to the Verfü¬ supply, a length of about 100 mm and a diameter of about 40 mm. In each of the arc-shaped cavities 230,232 may des¬ half easily a locating device having a length of about 50 mm and a height of about 10 mm oe be accommodated.

Figure 1 1 shows a modified embodiment of the camera probe 210, in which a tubular shaft 238 is formed between the screw 16 and the end wall of the housing 212th On this shaft sits or- processing device 234, which in this case has an annular housing. The annular housing of the locating device 234 in the example shown has an internal diameter that speaks 238 ent to the outer diameter of the shaft, and an outer diameter corresponding to the outer diameter of the housing 5 gE 212th

In this embodiment, the power supply of the device Or¬ device 234 either via a battery, which is integrated into the housing of the device Or¬ appliance, first or on the power supply of the Kamera¬

10 module done. In the latter case, connected to the camera cable An¬ disposed circuit terminal 240 between the camera body 222 and the end wall of the housing 212, the device via a line 242 with the Ortungs¬ 234 connected. The line 242 runs for example by in -₅ Annular chamber of the housing 212 formed radial webs 244 and is ge gen flow of water protected.

The problem of introducing a probe into the branching from the main channel side channel arises such defects not only in the determination of defects in the context of a channel 0 study, but also during the subsequent Aus¬ improvement. There are various tools be¬ known to be inserted into a sewer pipe to make appropriate Aus¬ improvement work. To this equipment include, in particular gripping, cutting or milling tools for removing foreign bodies such as ^ ingrown tree roots and the like, as well as devices for repairing imperfections in the channel wall, for example, for filling cracks or holes with a filling material or for lining or Aus¬ splash the inner surface of the channel wall with a coating material. A modified embodiment of the inventive device allows 0 to make even those working in the subsidiary canal pipe. To this end, the respective required work unit instead of the camera probe or zu¬ addition is attached to this at the rebound driven probe.

5