JP3781582B2 - In-pipe inspection device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an in-pipe inspection apparatus including an endoscopic device capable of propelling water in a pipe.
[0002]
[Prior art]
As an apparatus for inspecting a fully filled pipe, an endoscopic apparatus having a TV camera for in-pipe observation is inserted into the pipe from the fire hydrant portion in the pipe so that the endoscopic apparatus is propelled in the water in the pipe. What is made is known. When inserting the endoscope into the pipe, the fire hydrant connected to the branch from the pipe is removed from the branch, and instead, an insertion device containing the endoscope is attached to the branch. And this endoscope apparatus is sent in in a pipe | tube by moving the endoscope apparatus inside this insertion apparatus along a pipe radial direction.
[0003]
[Problems to be solved by the invention]
However, simply feeding in this way tends to cause disturbance in the direction of the endoscopic device during the feeding, and the top and bottom of the endoscopic device when it reaches the inside of the tube may deviate from the actual vertical direction. Then, there is a problem that the top and bottom of the image from the camera does not coincide with the top and bottom of the monitor screen, and thus it becomes difficult to observe the inside of the tube. There is also a problem that it is not clear which direction the endoscopic device inserted into the pipe is propelled from the branch path to the upstream side or downstream side of the pipe line simply by feeding it.
[0004]
Therefore, the present invention solves such problems, and in an in-pipe inspection apparatus equipped with an endoscopic device, allows the orientation of the top and bottom of the endoscopic device inserted into the tube to be set appropriately, and the inside of the tube It is an object of the present invention to make it easy to set in which direction along the duct the propulsion device to be inserted from the insertion position.
[0005]
[Means for Solving the Problems]
In order to achieve this object, the present invention provides an in-pipe inspection apparatus including an endoscopic device capable of propelling water in a pipe, and has an insertion means for inserting the endoscopic apparatus into the pipe. A housing part, a temporary holding means for temporarily holding the endoscope device in the housing part, a feeding means for moving the housing part in the tube radial direction and feeding the endoscope apparatus into the tube, and the feeding means for When the tube is fed into the tube, it turns against the inner surface of the tube, and at the time of turning, a force is applied to the endoscope device temporarily held by the temporary holding means to release the endoscope device from the temporary holding means in a predetermined direction. And a lever.
[0006]
With such a configuration, the endoscope apparatus is temporarily held by the movement of the storage section while the endoscope apparatus is temporarily held in the storage section by the temporary holding means. And inserted into the tube while maintaining its posture, that is, the vertical direction. Further, when the endoscope device is fed into the tube, the release lever hits the inner surface of the tube and turns, and at the time of turning, the endoscope device temporarily held by the temporary holding means is applied with force to temporarily hold the endoscope device. In order to release it from the means in a predetermined direction, the endoscope is surely sent out from the insertion position into the tube in a desired direction such as upstream or downstream of the conduit.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
In FIG. 4, reference numeral 11 denotes a pipe for underground water buried in the ground, and this pipe 11 is provided with a pit for an underground fire hydrant at an appropriate distance. In this pit, a branch from the pipe 11 is provided. A tube 12 is provided facing upward. A fire hydrant (not shown) is attached to the upper end of the branch pipe 12 via a sub valve 13. When the inside of the pipe is inspected by the endoscopic device, the auxiliary valve 13 is closed and the fire hydrant is removed, and the vertical insertion device 14 as an insertion means is connected to the upper end of the auxiliary valve 13 as shown in the figure.
[0008]
The insertion device 14 is connected to the flange pipe 15 connected to the sub valve 13 instead of the fire hydrant, the cable feed roller device 16 connected to the upper end of the flange pipe 15, and the upper end of the cable feed roller device 16. It has a chamber 17 and a water stop case 18 connected to the upper end of the chamber 17.
A flange 19 at the upper end of the cable feed roller device 16 is arranged on the ground surface or in the vicinity thereof, and a vertical guide rod 20 that slidably passes through the flange 19 in a sealed state as a feed means. 16, the flange pipe 15, the auxiliary valve 13, and the branch pipe 12 are provided so as to reach the inside of the pipe line 11. A halved guide tube 21 is provided at the lower end of the guide rod 20 as an accommodating portion. A cylindrical endoscope 22 is temporarily attached to the guide tube 21 by a holder 23 as a temporary holding means. It is housed in a holding state. A cable 25 is connected to the endoscope device 22. The cable 25 includes a plurality of electric wires 26 such as a power supply line and a video signal line.
[0009]
The cable 25 passes from the endoscope device 22 through the branch pipe 12, the sub-valve 13, the flange pipe 15, the cable feed roller device 16, the chamber 17, and the water stop case 18 in the vertical direction, and at the upper end of the water stop case 18. It penetrates the provided water stop part 27 and is led out of the insertion device 14. The cable feed roller device 16 is provided with a roller 28, and a pair of rollers 28, 28 of the illustrated roller 28 and another roller 28 (not shown) provided in front of the paper surface of FIG. The cable 25 is sandwiched. Reference numeral 29 denotes a handle, which can feed the cable 25 in the axial direction by rotating the illustrated roller 28.
[0010]
Pressurized air 32 from the compressor 31 is supplied to the water stop case 18 through a regulator 33. A control unit 34 can adjust the pressure of the pressurized air 32 via the regulator 33.
The insertion device 14 communicates with the inside of the pipe line 11 via the branch pipe 12, and therefore, pressurized water 35 from the pipe line 11 rises in the inside thereof. However, since the pressurized air 32 is supplied to the water-stopping case 18 as described above, the water surface 36 is located where the pressure of the air 32 and the pressure of the rising water 35 are balanced. The chamber 17 is provided with a gauge 37 for observing the level of the water surface 36 from the outside.
[0011]
The air 32 supplied to the inside of the water-stopping case 18 is released into the atmosphere through the gap between the water-stopping portion 27 of the water-stopping case 18 and the cable 25, so that the water-stopping portion 27 has The water 35 does not reach, so this part is stopped.
As shown in FIGS. 1 to 3, the guide tube 21 is attached in the vertical direction so as to be continuous with the lower end of the guide rod 20, and the holder 23 is attached to the inner surface of the guide tube 21. The holder 23 is a crescent-shaped thin plate material having elasticity. As shown in FIG. 3, the holder 23 can temporarily hold the cylindrical endoscope 22 by being elastically deformed so as to expand.
[0012]
As shown in FIGS. 1 to 3, a release lever 39 is provided at the lower portion of the guide tube 21. Specifically, a shaft 40 is provided in a direction crossing the lower portion of the guide tube 21, and the release lever 39 is supported by the shaft 40 so as to be rotatable. The release lever 39 has a plate-like pressing portion 41, and this pressing portion 41 is connected to the endoscope device 22 when the endoscope device 22 is accommodated in the guide tube 21 by the holder 23 in a temporarily held state. It is comprised so that it may be located between the wall parts of the guide cylinder 21. FIG.
[0013]
The release lever 39 has a collision portion 42 formed integrally with the pressing portion 41. As shown in FIG. 2, when the guide tube 21 approaches the tube bottom 43 by the operation of the guide rod 20 as shown in FIG. It is configured to hit the tube bottom 43. The collision portion 42 is formed at a position spaced from the shaft 40 in the radial direction of the shaft 40. Therefore, when the collision portion 42 hits the tube bottom 43, the release lever 39 is thereby turned around the shaft 40, and thereby the pressing portion 41 is configured to move away from the wall portion of the guide tube 21. . A spring 44 is provided between the guide tube 21 and the collision portion 42 of the release lever 39. The spring 44 exerts a force on the release lever 39 in the direction in which the pressing portion 41 approaches the wall portion of the guide tube 21.
[0014]
In such a configuration, when the inside of the pipe is inspected, the auxiliary valve 13 is closed, the fire hydrant attached to the auxiliary valve 13 is removed, and instead, it is temporarily held by the guide cylinder 21 by the holder 23. The insertion device 14 in a state where the endoscope device 22 is accommodated in the flange tube 15 is attached to the sub valve 13. In this accommodated state, as shown in FIG. 1, the endoscope device 22 is temporarily held by a holder 23, and the pressing portion 41 of the release lever 39 is moved between the endoscope device 22 and the guide tube 21 by the action of a spring 44. Located between the walls. The endoscopic device 22 has a horizontal posture inside the conduit 11, but the bottom at that time approaches the pressing portion 41 of the release lever 39, and the top at that time is separated from the pressing portion 41. Are temporarily held by the holder 23.
[0015]
In this state, the auxiliary valve 13 is opened, and the portion of the guide rod 20 protruding from the flange 19 of the cable feed roller device 16 is pushed down. Then, the endoscope device 22 accommodated in the flange pipe 15 is pushed into the pipe 11 together with the guide cylinder 21 as shown in FIG. At this time, the cable 25 is also fed toward the inside of the pipe line 11 by operating the handle 29 corresponding to the depression of the guide rod 20.
[0016]
Then, the guide tube 21 approaches the tube bottom 43 as shown in FIG. 4, and the collision part 42 of the release lever 39 hits the tube bottom 43 as shown in FIG. Then, the release lever 39 is turned around the shaft 40 against the force of the spring 44, and the pressing portion 41 presses the bottom portion of the endoscope device 22. As a result, as shown in FIGS. 3C to 3E, the endoscopic device 22 is released from the temporary holding state by the holder 23, separated from the holder 23, and moved from the guide tube 21 to the inside of the pipe line 11. Extruded.
[0017]
At this time, as shown in FIG. 2, the endoscopic device 22 is pushed out in such a posture that its top is on the upper side in the vertical direction and its bottom is on the lower side in the vertical direction, as shown in FIG. Further, it is pushed out from the guide tube 21 in the direction pushed by the release lever 39. Accordingly, when the guide tube 21 containing the endoscope 22 is accommodated in the insertion device 14, the orientation of the guide tube 21, that is, the pressing direction of the pressing portion 41 of the release lever 39 is set, whereby the endoscope 22 Can be extruded in any direction in the upstream direction or downstream direction of the conduit 11.
[0018]
The endoscopic device 22 fed into the pipe 11 is separated from the guide tube 21 and starts in the axial direction of the pipe 11. Therefore, along with the propulsion of the endoscope 22, the cable 25 is sent toward the inside of the pipe line 11 by operating the handle 29 in the same manner.
When the internal view in the pipe is completed, the handle 29 of the cable feed roller device 16 is operated to pull back the cable 25, thereby returning the internal device 22 to the inside of the original guide tube 21. At this time, the release lever 39 is in a state in which the pressing portion 41 approaches the wall portion of the guide tube 21 by the action of the spring 44, and therefore does not hinder the return of the endoscope device 22. Then, the guide rod 20 is pulled up, the endoscope device 22 is accommodated in the flange pipe 15 again, the sub valve 13 is closed, and the insertion device 14 is removed from the sub valve 13.
[0019]
【The invention's effect】
As described above, according to the present invention, the insertion means for inserting the endoscope device into the tube includes the accommodating portion of the endoscope device, the temporary holding means for temporarily holding the endoscope device in the accommodating portion, and the accommodating portion with the tube diameter. A feeding means for moving the endoscope device into the tube by moving in the direction, and when the endoscope device is fed into the tube by this feeding device, the endoscope hits the inner surface of the tube, and at the time of this turning, it was temporarily held by the temporary holding means. Since there is a release lever that applies a force to the endoscopic device to release the endoscopic device from the temporary holding means in a predetermined direction, the internal device is temporarily held in the housing portion by the temporary holding means. The visual device is sent into the tube by the movement of the housing portion. For this reason, the visual device can be inserted into the tube in a state in which the posture, that is, the top-and-bottom direction is retained by being temporarily held. Further, when the endoscope device is fed into the tube, the release lever hits the inner surface of the tube and turns, and at the time of turning, the endoscope device temporarily held by the temporary holding means is applied with force to temporarily hold the endoscope device. Since it is released from the means in a predetermined direction, the endoscope device can be reliably sent out from the insertion position into the pipe in a desired direction such as upstream or downstream of the pipe.
[Brief description of the drawings]
FIG. 1 is a detailed view of a main part of an in-pipe inspection apparatus according to an embodiment of the present invention.
FIG. 2 is a diagram for explaining the operation of the part shown in FIG. 1;
FIG. 3 is a detailed view of a guide tube in the in-pipe inspection apparatus.
FIG. 4 is an overall view of the in-pipe inspection apparatus.
[Explanation of symbols]
11 Pipe 14 Insertion device 20 Guide rod 21 Guide tube 22 Endoscope 23 Holder 39 Release lever

Claims (1)

An in-pipe inspection apparatus provided with an endoscopic device capable of propelling water in a pipe, and having an insertion means for inserting the endoscopic apparatus into the pipe, and the insertion means includes an accommodating portion of the endoscopic apparatus, and the endoscopic device. Temporary holding means for temporarily holding the device in the housing portion, feeding means for moving the housing portion in the radial direction of the tube and feeding the endoscope device into the tube, and when the endoscope device is fed into the tube by the feeding means, It has a release lever that turns against the inner surface and applies a force to the endoscope device temporarily held by the temporary holding means at the time of turning to release the endoscope device from the temporary holding means in a predetermined direction. In-pipe inspection device.

Images