JP2569673Y2 - Guiding device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-pipe guide device which is advantageously used when a television camera or the like is pushed in and inserted into, for example, an underground pipe to inspect the inside thereof.

[0002]

2. Description of the Related Art A typical prior art is shown in FIG. The underground pipes 1 and 2 made of cast iron or the like are connected by a connection portion 3, and a fluid such as a gas is transported. The television camera 4 constitutes a longitudinal body 5 together with a flexible cable 9 connected thereto, and pushes the longitudinal body 5 in the direction of the arrow 6 to be inserted into the tube 1 and thus to inspect the inside of the tube 1. It can also be inserted into the tube 2 and the connection 3 in the same way and tested.

[0003]

In the prior art shown in FIG. 7, when the television camera 4 is pushed from the tube 1 by the cable 9 and inserted, the inner space having a larger diameter than the tube 1 is formed. In the connection portion 3 called a dresser or the like, the distal end portion 7 of the television camera 4 hangs down by its own weight, so that it becomes difficult to insert the television camera 4 from the connection portion 3 into the tube 2 and guide it. . The same applies to the case where the water drainer 8 is interposed between the pipes 1 and 2 as shown in FIG. The television camera 4 inserted by being pushed from inside the pipe 1 hangs down in the space inside the dewatering device 8, and therefore, even if the television camera 4 is inserted from the dewatering device 8 into the pipe 2 by pushing in the cable 9. However, the television camera 4 is caught in the water drainer 8 and the end of the tube 2, and it is difficult to smoothly insert the television camera 4 into the tube 2.

An object of the present invention is to provide an in-pipe guide in which a television camera 4 and the like can be smoothly pushed in and inserted even if there are dents and steps such as a connecting portion 3 and a water drainer 8 in the pipe. It is to provide a device.

[0005]

SUMMARY OF THE INVENTION The present invention has a pair of substantially parallel legs and a connecting portion where the legs are connected, and the entire shape is substantially U-shaped. At the distal end of the flexible elongated body to be pushed in, the base end of the leg is fixed, and the connecting portion is provided with a guide member bent toward the axis of the elongated body, and a distal end of the elongated body. , Regarding the base end of the leg,
An in-pipe guide device comprising: a pair of flexible wires that are offset from each other on both sides in the circumferential direction of the elongated body, are fixed, and extend along the elongated body.

[0006]

According to the present invention, a guide member is fixed to a distal end portion of a flexible elongated body to which a television camera or the like is attached, and this guide member is formed substantially in a U-shape. The connecting portion of the member is bent toward the axis of the elongated body, in other words, the connecting portion is bent toward the radially inward side of the elongated body, and therefore, of a pair of wires fixed to the distal end portion of the elongated body. By pulling one of them, the longitudinal body is bent, and the connecting portion of the guide member can be smoothly inserted into the pipe beyond the dents and steps in the pipe.

[0007]

FIG. 1 is a perspective view of an embodiment of the present invention.
The in-pipe guide device 10 includes a guide member 11 and a pair of wires 12 and 13. Guide member 11 and wires 12,1
3 is fixed to the outer periphery of the television camera 14. A cable 15 is connected to the television camera 14. The television camera 14 and the cable 15 constitute a flexible elongated body 16.

Referring to FIG. 2, the television camera 14 is inserted into the underground pipe 17 from the insertion port 18 using the in-pipe guide device 10 shown in FIG. Insert and guide.

FIG. 3 is a plan view of the guide device 10 in a pipe.
FIG. 4 is a front view of the guide device 10. The guide member 11 of the in-pipe guide device 10 includes a pair of substantially parallel legs 21 and 22 and a connecting portion 23 where the legs 21 and 22 are continuous.
And the entire shape is substantially U-shaped.
Base ends 21a and 22a of the legs 21 and 22 are fixed to an outer peripheral portion of the television camera 14, which is a distal end of the elongated body 16. The base ends 21 a and 22 a are provided below the axis 24 of the television camera 14 in FIG. 4 symmetrically with respect to a symmetry plane 25 passing through the axis 24. Connecting part 23
Is bent toward the axis 24, in other words, the base end portion 23 is bent inward in the radial direction of the television camera 14.

The guide member 10 is provided below a horizontal plane including the axis line 24 in FIG. 4, so that light generated from the optical fiber 27 facing the front portion 26 of the television camera 14 emits light from the guide member 10, especially It is possible that the light is reflected by the connecting portion 23 and enters the front portion 26 again, so that halation of the imaging screen can be prevented. The guide member 11 is provided so as not to obstruct the view of the television camera 26 greatly.

The ends 12a and 13a of a pair of wires 12 and 13 are fixed to the outer periphery of the television camera 14, respectively. Base end 21 of legs 21 and 22 of guide member 11
a, 22a and ends 12a, 13 of the wires 12, 13
In order to fix “a” to the outer peripheral portion of the TV camera 14, for example, a tape, an adhesive, a wire, or the like is integrally wound around the outer peripheral portion of the TV camera 14 and fixed. These wires 1
The ends 12a, 13a of the 2, 13 have their axes on the plane of symmetry 25, as can be seen in FIG. Thus, the wires 12, 13 are connected to the base ends 21a, 22 of the legs 21, 22.
With respect to a, the television cameras 14 are arranged on both sides in the circumferential direction of the television camera 14 (up and down in FIG. 4) so as to be mutually shifted. Wires 12, 13
Is made of a flexible wire such as a piano wire. The guide member 11 is made of a material such as steel.

FIG. 5 is a sectional view of the cable 15 taken at right angles to the axis. The cable 15 includes an electric wire 25 connected to an image sensor of the television camera 14 and a front part 2 provided with a convex lens and the like for forming an image on the image sensor of the television camera 14.
6 includes an optical fiber 27 for transmitting light for illuminating the front (right side in FIG. 1), a cushioning material 28 such as paper, and a coating layer 29 made of hard vinyl chloride or the like.

Referring to FIG. 6, when inserting a long body 16 including a television camera 14 for inspecting the inner surfaces of tubes 17, 20 and connecting portion 19, cable 15 is inserted through insertion port 18 of tube 17. Push. Thus, when the television camera 14 is pushed into the tube 17 and inserted, the inner surface of the tube 17 can be observed. TV camera 14
When the wire 12 reaches the space of the connecting portion 19 in FIG. 2, the wire 12 above the wire is pulled outside the insertion port 18. The wire 13 is loosened. Thereby, the guide member 10 at the lower part of the front part 26 of the television camera 14 faces upward as indicated by the arrow 30, and thus the cable 15 prevents the television camera 14 from hanging down. In this state, the cable 15 is further pushed together with the wire 12, and thus the connecting portion 23 of the guide member 10 is
And is guided and inserted into another tube 20 via. The connecting portion 23 of the guide member 10 is connected to the axis 24 of the television camera 14.
, The connecting portion 23 is easily inserted into the tube 20, so that the television camera 14 is prevented from colliding with the end 31 of the tube 20 near the front portion 26. When the television camera 14 is in the upside-down posture shown in FIG. 2, the posture of the television camera 14 can be adjusted by pulling the other wire 13. 12,
By pushing the cable 13 together with the cable 15 while appropriately pulling the cable 13, the television camera 14 can be smoothly guided from the connection portion 19 into the pipe 20.

The present invention is not only embodied in connection with the television camera 14, but can also be widely practiced for smoothly pushing the flexible elongated body into the tube.

[0015]

As described above, according to the present invention, the distal end of the flexible elongated body to which the television camera or the like is attached,
The base end of the leg of the guide member formed substantially in a U shape is fixed, and the connecting portion of the guide member is curved toward the axis of the elongated body, and has a pair of flexible members. The wire is
Secured to the distal end of the elongate body, this wire is offset from each other on both sides in the circumferential direction of the elongate body with respect to the proximal end of the leg, so that pulling one wire causes the elongate body to bend and the guide member to be bent. The elongated body can be smoothly guided and inserted into the tube beyond the depressions and steps of the tube.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state where the television camera 14 is inserted into tubes 17, 20 and a connection portion 19.

FIG. 3 is a plan view showing the guide device 10 and the television camera 14;

4 is a front view of the guide device 10 and the television camera 14 as viewed from the right side in FIG. 3;

FIG. 5 is a sectional view of the cable 15 taken at right angles to the axis.

FIG. 6 is a perspective view showing a state in which the television camera 14 is pushed into the tube 17 and inserted.

FIG. 7 is a cross-sectional view of the prior art.

FIG. 8 is a sectional view showing another state of the prior art shown in FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 In-pipe guide device 11 Guide member 12, 13 Wire 14 Television camera 15 Cable 16 Flexible elongated body 21, 22 Leg 21a, 22a Base end 23 Connection part

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Claims (1)

(57) [Scope of request for utility model registration] 1. A flexible longitudinal section which has a pair of substantially parallel legs and a connecting portion where the legs are continuous, and whose overall shape is substantially U-shaped, and which is to be pushed into a tube. At the distal end of the body, the proximal end of the leg is fixed, the connecting portion is a guide member bent toward the axis of the elongated body, and at the distal end of the elongated body, with respect to the proximal end of the leg. And a pair of flexible wires which are fixed to each other on both sides in the circumferential direction of the elongated body and are fixed and extend along the elongated body.