Inspection and / or rehabilitation unit for a sewer pipe

Abstract

Inspection and / or rehabilitation unit (10) for a sewer pipe (20) with - a push rod (30), - an inspection and / or rehabilitation device (40) arranged at one end of the push rod (30) and - a reel (50) arranged at the other end of the push rod (30) and receiving the push rod (30), - a tensile and / or pressure-resistant sleeve (60) designed to guide the push rod (30), which is attached at one end to the reel (50) and at its other end is designed to be connected to the sewer pipe (20), wherein the sleeve (60) acts as a Bowden cable sleeve and the push rod (30) acts as a Bowden cable core, and - a fastening unit (70) arranged at the other end of the sleeve (60) for fastening the sleeve (60) to the inlet of the sewer pipe (20).

Description

[0001] The invention relates to an inspection and / or rehabilitation unit for a sewer pipe with a push rod, an inspection and / or rehabilitation device arranged at one end of the push rod and a receiving device arranged at the other end of the push rod and receiving the push rod.

[0002] Such inspection and / or remediation units are known, for example, from DE 10 2009 015 503 B4 or US 2014 / 0 261 796 A1.

[0003] The problem with operating such units is that the receiving device, for example in the form of a reel, must be positioned conveniently relative to the pipe's inlet for working on and in the pipe. The user of the device must be in a good pushing position between the reel and the insertion opening in order to insert the push rod into the pipe. At the same time, the user must also be able to simultaneously examine the image captured by the camera mounted on the push rod, which is usually displayed on a monitor mounted on the reel. This is also where the controls for operating the inspection and / or rehabilitation unit are located.

[0004] It's therefore not always possible for a single person to inspect or rehabilitate a sewer pipe. This is extremely labor-intensive and time-consuming, as a single person would have to frequently change positions to coordinate the unit's components and position the inspection and / or rehabilitation equipment within the pipe.

[0005] The object of the invention is therefore to provide an inspection and / or rehabilitation unit for a sewer pipe which simplifies the inspection or rehabilitation of a sewer pipe, whereby the inspection or rehabilitation of the sewer pipe can be carried out by only one user alone in a short time.

[0006] This object is achieved according to the invention by the inspection and / or rehabilitation unit having the features of claim 1. The subclaims represent advantageous embodiments of the invention.

[0007] The basic idea of ​​the invention is to connect the inlet of the pipe to the reel by means of a pressure- and / or tensile-resistant sleeve and to insert the push rod through the sleeve into the pipe. A single user of the unit can remain in the area of ​​the reel at all times, release the push rod from the reel or roll it onto it, watch the monitor and operate the unit's controls. The sleeve acts as a Bowden cable sleeve and the push rod as the Bowden cable core, so that the forces acting when the push rod is inserted into the pipe or pulled out of the pipe can be transferred directly from the unit into the ground. This is particularly advantageous if the push rod is automatically driven by a motor drive unit for dispensing or retracting.

[0008] According to the invention, an inspection and / or rehabilitation unit for a sewer pipe is provided, comprising a push rod, an inspection and / or rehabilitation device arranged at one end of the push rod, and a reel arranged at the other end of the push rod and receiving the push rod. In addition, a tension- and / or pressure-resistant sleeve is provided for guiding the push rod through, which is attached at one end to the reel and connected at its other end to the sewer pipe. Due to this design, the sleeve provided according to the invention acts as a Bowden cable sleeve, and the push rod guided in the sleeve acts as a Bowden cable core.

[0009] The connection between the casing and the sewer pipe is, in particular, a force-locking connection, in which tensile or compressive forces acting on the casing are diverted into the sewer pipe or its immediate surroundings (i.e., into the ground). According to the invention, the casing has a fastening unit arranged at its other end for fastening it to the inlet of the sewer pipe. This fastening unit has, in particular, at least one fluid-inflatable cushion arranged on the outer circumference of the casing to brace the casing in the pipe.

[0010] In this way, a simple force-locking connection can be achieved to dissipate compressive and tensile forces acting on the shell.

[0011] However, other form-fitting or force-fitting connections between the casing and the sewer pipe are also conceivable.

[0012] The sleeve can be designed, in particular, as a sleeve that can be placed around the push rod once it has already been inserted into the conduit. This can be particularly helpful if the push rod has been manually inserted into the conduit but needs to be automatically withdrawn from the conduit.

[0013] The sheath doesn't necessarily have to completely surround the push rod. Rather, it is sufficient for the sheath to at least partially surround the push rod in cross-section. Only the sheath's guiding function and the absorption of tensile and / or compressive forces must be ensured. The geometric shape is therefore essentially irrelevant.

[0014] Particularly preferably, the reel has a drive unit that ejects and retracts the push rod, wherein the drive unit is particularly motor-driven. Alternatively, the drive unit can be attached to any location on the Bowden cable housing. The Bowden cable housing and the reel housing form a single unit toward which the push rod is displaced (motor-driven). The fixed bearing connects the Bowden cable to the pipe inlet, whereby the winding and unwinding takes place automatically.

[0015] Finally, the unit's inspection device is designed as a camera, for example, and the rehabilitation unit as a milling machine.

[0016] The invention is described below with reference to a Fig. 1, a particularly preferred embodiment is explained in more detail.

[0017] Fig. 1 shows the schematic structure of a particularly preferred inspection and / or rehabilitation unit with a push rod inserted into a sewer pipe, at the end of which a milling cutter is arranged.

[0018] The inspection and / or rehabilitation unit 10 has a push rod 30 inserted into a sewer pipe 20, at one end of which a rehabilitation device 40 designed as a milling cutter is arranged and the other end of which is received by a reel 50.

[0019] The push rod 30 is surrounded in the area from the reel 50 to the inlet of the sewer pipe 20 by a tensile and / or pressure-resistant casing 60, which guides the push rod 30 and directs it from the reel 50 into the sewer pipe 20.

[0020] The sheath 60 is attached at one end to the reel 50 and is designed to support the inlet of the sewer pipe 20 at its other end. The sheath 60 thus acts as a Bowden cable sheath, and the push rod 30 guided therein acts as a Bowden cable core.

[0021] In particular, the Fig. 1, a particularly advantageous embodiment has a fastening unit 70 arranged at the other end of the sleeve 60 for fastening the sleeve 60 to the inlet of the sewer pipe 20. This fastening unit 70 braces the sleeve 60 in the pipe 20 by arranging at least one fluid-inflatable cushion on the outer circumference of the sleeve 60 and—as is known, for example, in the case of shut-off bladders—tightening the sleeve 30 in the pipe 20.

[0022] The reel 50 receiving the push rod 30 has a motor drive unit 80 that ejects and retracts the push rod 30, so that the insertion of the push rod 30 into the pipe 20 and the withdrawal of the push rod 30 from the pipe 20 can be carried out fully automatically.

Claims

[1] Inspection and / or rehabilitation unit (10) for a sewer pipe (20) with - a push rod (30), - an inspection and / or rehabilitation device (40) arranged at one end of the push rod (30) and - a reel (50) arranged at the other end of the push rod (30) and receiving the push rod (30), - a tensile and / or pressure-resistant sleeve (60) designed to guide the push rod (30), which is attached at one end to the reel (50) and at its other end is designed to be connected to the sewer pipe (20), wherein the sleeve (60) acts as a Bowden cable sleeve and the push rod (30) acts as a Bowden cable core, and - a fastening unit (70) arranged at the other end of the sleeve (60) for fastening the sleeve (60) to the inlet of the sewer pipe (20). [2] Inspection and / or rehabilitation unit (10) according to claim 1, characterized bythat the fastening unit (70) for bracing the sheath (60) in the tube (20) has at least one cushion arranged on the outer circumference of the sheath (60) and inflatable by means of a fluid. [3] Inspection and / or rehabilitation unit (10) according to claim 1, characterized by that the sleeve (60) is designed as a cuff. [4] Inspection and / or rehabilitation unit (10) according to one of the preceding claims, characterized by that the sheath (60) at least partially surrounds the push rod (30) when viewed in cross section. [5] Inspection and / or rehabilitation unit (10) according to one of the preceding claims, characterized by that the reel (50) or the sleeve (60) has a drive unit (80) which ejects and retracts the push rod (30). [6] Inspection and / or rehabilitation unit (10) according to one of the preceding claims, characterized by that the inspection device (40) is a camera. [7] Inspection and / or rehabilitation unit (10) according to one of the preceding claims, characterized by that the rehabilitation device (40) is a milling machine.

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