JP3352442B2 - Cable entry / exit 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 cable for feeding cables connected to a running body running in a pipe such as a sewer pipe while following the running of the running body, and for drawing in the sent cables. Related to the access device.

[0002]

2. Description of the Related Art Generally, in the case of a sewage pipe as a pipe, for example, a traveling body equipped with a camera device or the like is moved inside the pipe to search for a damaged portion of the pipe and to perform maintenance. . Sewage pipes are buried underground,
It communicates with so-called manholes consisting of shafts that reach the ground at appropriate intervals. The traveling body includes a plurality of cables such as a cabtire cable for a camera device, an air cable composed of a hose for supplying an air source for driving the traveling body, and a wire cable for retracting the traveling body. The cables are linked to each other, and are sent out following the running of the traveling body through the manhole by an access device installed on the ground, and the sent cables are drawn in. 2. Description of the Related Art Conventionally, an in-pipe cable entry / exit device that allows cables to enter / exit, for example, winds each cable around a reel and drives the reel with a motor to send the cable in accordance with the traveling of a traveling body.

[0003]

However, the conventional in-pipe cable access device has a problem that it is difficult to send out the cables in synchronization with the traveling body. That is, the pipe wall on which the traveling body travels is not necessarily in a uniform state, but the conditions are poor such as mud, dirt, rust, etc. are deposited or adhered, and there is a pool of water. Therefore, the traveling body receives the resistance, and the traveling becomes uneven, and the traveling body may not be able to travel at a constant speed. In this case, the feed of the cables precedes, and the cables are slackened, and if the slack cables are entangled, the traveling of the traveling body becomes more and more troublesome. I will. Also,
If the traveling body is stopped in the pipe due to the above-mentioned deposits or deposits, only the cables are fed. In particular, when there are a plurality of cables, the problem becomes serious. The present invention has been made in view of such a problem, and according to the slack state of the cables, the cables can be sent out, and the running conditions of the running body are synchronized with the running body. It is an object of the present invention to provide an in-pipe cable entry / exit device capable of holding as much as possible.

[0004]

The technical means of the present invention for solving the above problems is to send out cables connected to a traveling body traveling in a pipe while following the traveling of the traveling body. An in-pipe cable entry / exit device for drawing in cables sent out, comprising: a feeding section driven to feed or pull in cables; a driving section driving the feeding section; and a cable for sending out the cables. And a control unit for operating the driving unit based on the detection of the detection unit. According to this, when the traveling body travels in the pipe, the cables are sent out along with the traveling of the traveling body. However, the tension detecting state of the cables is always detected by the detection unit, and the driving unit is driven based on the detection. Is activated. Therefore, it is possible to control to stop driving when cables are excessively slack and to start driving when there is no slack, and therefore, regardless of the traveling state of the traveling body,
It is possible to prevent a situation in which the cables are excessively slack and are entangled, and it is possible to prevent a situation in which the traveling of the traveling body is hindered. That is, the cables can be sent out according to the slack state of the cables, so that the running conditions of the running body can be maintained as good as possible by synchronizing with the running body.

[0005] And, the upper Symbol detection unit, a supporting portion in which the cables are supported to be able to sag in a substantially U shape, slack portions of cables loose the supported substantially U-shaped in the support portion And a detection switch unit for detecting whether the lower end of the detection switch unit is higher or lower than a predetermined position. When the detection switch unit detects that the detection switch unit is high, the control unit operates the drive unit, and the detection switch unit When it is detected that is low, the function of stopping the driving unit is provided. According to this, since the cables are detected by the slack U-shaped portion, the detection is easy and the detection can be reliably performed. Ma
And, on the Symbol detection switch portion, constituted by a upper switch and a lower limit switch for detecting the slack portion of the height of being supported by the support portions provided at different positions substantially U-shaped in sagging cables, The control unit is configured to have a function of activating the drive unit when the upper limit switch detects it, and stopping the drive unit when the lower limit switch detects the control unit. Since the detection is performed by the two switches of the upper limit switch and the lower limit switch, the range of the slack can be set as compared with the case where the detection is performed by one switch. Control can be performed without making the cycle extremely short.

[0006] Further, the upper Kioku引部, and machine base are constituted by a reel for winding the cables provided so as to be normally and reversely rotated in該機table. Since the cables can be held on the reel, it is easy to send and withdraw. Furthermore was or, on Kioku引部constitute includes a guide portion for guiding the cables into and out from the provided machine base on the machine base. Since the cables are guided by the guide portion, the cables are reliably sent out, and the detection of the deflection is reliably performed.
In this case, the guide section is provided with a conversion roller for winding the cables around the cables and changing the direction of the cables in and out . Since the sending-out direction is defined by the conversion roller, the sending-out can be performed reliably, and the detection unit can surely detect the deflection. In this case, the guide section includes a plurality of guide rollers that are arranged in a line in and out of the cables to support the cables . This also
Since the feeding direction is defined by the guide roller,
The feeding can be performed reliably, and the detection unit can reliably detect the deflection.

[0007] Soshitema was, by providing a plurality of upper Symbol reel to allow winding a plurality of cables, and the driving portion is configured to include a synchronization mechanism for synchronously rotating the respective reel. Since the reel is rotated synchronously by the synchronization mechanism, the cables can be reliably sent out by the same length as compared to the case where the reel is rotated and sent out simply by the pulling force of the cables, Also in this regard, it is possible to make the detection unit surely detect the deflection. In this case, the synchronizing mechanism includes a sprocket provided on the rotating shaft of each reel, and a chain that is wound around each sprocket and moves the sprockets together . It can be created with a simple mechanism.

If necessary, the drive unit may be provided with a piston device for moving the piston forward and backward and a cylinder for moving the piston forward and backward; a rack gear provided on the piston of the cylinder device for moving forward and backward; A pinion gear that is rotatably provided on the rotating shaft and meshes with the rack gear and is rotated forward and backward by the forward and backward movement of the rack gear; and a pinion gear that is provided on the rotating shaft of the reel and enables rotation of the pinion gear in the normal rotation direction. A forward rotation shifter for disabling rotation in the reverse rotation direction and linking the pinion gear to the rotation axis of the reel; and disabling rotation of the pinion gear provided on the rotation axis of the reel in the normal rotation direction and enabling rotation in the reverse rotation direction. And a reverse rotation shifter for linking the pinion gear to the rotating shaft of the reel. Since an air cylinder or a hydraulic cylinder can be used as the cylinder device, the power source of the device can be easily obtained when the device is used outdoors, such as when searching for a sewer pipe, and the switching operation is easily and reliably performed by the shifter. Can be made. Further, as necessary, a nozzle for injecting the cleaning liquid into the cables drawn into the feeding unit is provided. As we can wash cables,
It is possible to prevent adverse effects due to dirt and the like attached to cables.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a pipe cable access device according to an embodiment of the present invention. As shown in FIG. 1, an in-pipe cable entry / exit device S according to an embodiment of the present invention is used in a sewer pipe search system. In the search system shown in FIG. 2, K is a sewer pipe buried underground, and M is a manhole that connects the sewer pipe K and the ground. In the figure, reference numeral 1 denotes a traveling body, an air-driven driving vehicle 2 having traveling wheels, a camera vehicle 4 connected to a front side of the driving vehicle 2 and having traveling wheels and having a borehole camera 3 mounted thereon, A towing vehicle 5 having running wheels and being equipped with an electromagnetic valve and a regulator for driving air of the driving vehicle 2 which is towed by the driving vehicle 2
It is comprised including. The driving wheel 2 has a body 6 that can be extended and retracted by an extensible air cylinder 6a, is provided so as to be able to advance and retreat by air driving, and abuts against the tube wall Ka when moving in, and separates from the tube wall Ka when retreating. The front and rear leg devices 7 are alternately brought into contact with the tube wall Ka, and in each case, the body 6 is expanded and contracted so that the leg device 7 can be run through the sewer pipe like a so-called "pitworm". . Further, the camera wheel 4 is provided with an air nozzle 8 for spraying water collected in the pipe by spraying air onto the camera 3 for cleaning.

The traveling body 1 has an air cable (C) comprising a hose for supplying air for driving the driving vehicle 2 and air for blowing from the air nozzle 8 of the camera wheel 4.
a), a cabtire cable (Cb) for transmitting an electric signal for controlling an electromagnetic valve or the like of the towing vehicle 5, a wire cable (Cc) for pulling back the traveling body 1, and a camera for image transmission of the borehole camera 3 and the like. Cable (Cd)
Are connected to each other. The in-pipe cable entry / exit device S according to the embodiment is a device that sends out the plurality of cables C following the traveling of the traveling body 1 and pulls in the sent out cables C. The basic configuration of the in-pipe cable entry / exit device S is as follows: a feeding unit 10 that is driven to send or pull out the cables C; a driving unit 30 that drives the feeding unit 10; The control unit 70 includes a detection unit 50 that detects the tension state of C, and a control unit 70 that operates the drive unit 30 based on the detection of the detection unit 50. The transfer unit 10, the driving unit 30, and the control unit 70 are mounted on a ground device provided on the ground. On the ground,
A vehicle 16 having a reel for sending out and rewinding the camera cable (Cd) and mounting a control device (not shown) for processing an electric signal from the camera cable (Cd)
Is installed. Reference numeral 17 denotes a compressor that supplies compressed air to the air cable (Ca), and reference numeral 18 denotes a generator that supplies power to ground devices and the like. A cleaning liquid supply device 19 supplies a cleaning liquid to a nozzle described later.

As shown in FIGS. 1 to 6, in a pipe cable access device S according to an embodiment, a feeding unit 1 is provided.
Reference numeral 0 denotes a machine base and a reel 13 provided on the machine base 11 so as to be rotatable forward and backward with the rotation axis 12 being perpendicular to the machine base 11 and around which the cables C are wound. A plurality of reels 13 are provided, and a plurality of cables C can be wound. In the embodiment, the above four cables C
Of the reels 13 (1) around which the air cable (Ca) is wound.
3a), a reel 13 (13b) for winding a cabtire cable (Cb), and a reel 13 (13c) for winding a wire cable (Cc). still,
The camera cable (Cd) is wound around a reel 13 (13d) mounted on the vehicle 16. Reference numeral 14 denotes a traverser around which a wire cable (Cc) from a reel 13 (13d) is wound so as to be guided to a conversion roller described later.

The delivery unit 10 is provided on the machine base 11 and is provided on the machine base 1.
It is provided with a guide section 20 for guiding cables C that enter and exit from one entrance section 15. Guide part 2
No. 0 is provided with a conversion roller 21 around which the cables C are wound to change the direction of the cables C in the entrance / exit direction and guide the cables C to the entrance / exit portion 15. Reference numeral 22 denotes a pressing roller that rolls against the conversion roller 21 and presses the cables C against the conversion roller 21. The conversion roller 21 has a rotation shaft 23 parallel to each reel 13 and is rotatably provided on the machine base 11. A plurality of conversion rollers 21 are provided on the rotation shaft 23, and as shown in FIG. 3, the conversion rollers 21 (21) around which a wire cable (Cc) is wound in order from the bottom.
c), a conversion roller 21 (21b) around which the cabtire cable (Cb) is wound, and a conversion roller 21 (21a) around which the air cable (Ca) is wound. At the upper end of the rotation shaft, a conversion roller 21 (21d) around which a camera cable (Cd) from a reel 13 (13d) mounted on the vehicle 16 is wound. Further, the guide portions 20 are provided so as to extend over a pair of support plates 24 protruding from the entrance / exit portion 15 and are arranged in a row corresponding to the directions of the cables C to support the cables C. The guide roller 25 is provided. There are a plurality of rows of guide rollers 25, and as shown in FIG.
row (25c) of guide rollers 25 supporting c) and guide rollers 25 supporting cabtire cable (Cb)
(25b), a row (25a) of guide rollers 25 supporting the air cable (Ca), and a camera cable (C).
A row (25d) of guide rollers 25 supporting d) is provided. Each of the cables C hangs down and is converged by the guide roller 25 so as to be inserted into the manhole M.

As shown in FIGS. 3 to 8, the drive unit 30 synchronously rotates the rotating shaft 12 of each reel 13, the rotating shaft 23 of the conversion roller 21, and the shaft 14a of the traverser 14. As shown in FIG. 3, FIG. 5 and FIG.
Is provided with a synchronization mechanism 31 for rotating these synchronously. The synchronization mechanism 31 includes a rotation shaft 12 of each reel 13, a rotation shaft 23 of the conversion roller 21, and the traverser 1.
4 includes a sprocket 32 provided on the shaft 14a, and a chain 33 that is wound around the sprockets 32 and moves the sprockets 32 together. Reference numeral 34 denotes a plurality of idlers for adjusting the tension of the chain 33 to ensure the engagement of the sprocket 32.

As shown in FIGS. 7 and 8, a driving unit 30 includes a cylinder device 40 for hydraulic and pneumatic operation, which includes a piston 41 for moving forward and backward and a cylinder 42 for moving the piston 41 forward and backward. And a rack gear 43 provided on the piston 41 of the rack 40 and moving forward and backward, and a rotatable shaft 12 of the reel 13 (13c) for the wire cable (Cc) rotatably and reversely rotatable and meshing with the rack gear 43 to advance and retreat the rack gear 43. The pinion gear 44 is rotated on the rotation shaft 12 of the reel 13 by rotating the pinion gear 44, and the pinion gear 44 is linked to the rotation shaft 12 of the reel 13 by enabling the rotation of the pinion gear 44 in the normal rotation direction and disabling the rotation in the reverse rotation direction. A forward rotation shifter 45 having a cam clutch to be driven, and a forward rotation direction of a pinion gear 44 provided on the rotation shaft 12 of the reel 13. The pinion gear 44 to enable rotation in the reverse direction to disable rotation and a reverse rotation shifter 46 having a cam clutch is linked to the rotary shaft 12 of the reel 13 is constituted. Forward rotation shifter 45 and reverse rotation shifter 4
Reference numeral 6 indicates that the reel 13 (13c) is rotated forward or backward by any one of which is linked to the pinion gear 44 by a switching mechanism (not shown). The rotation of the reel 13 (13c)
It is transmitted to each reel 13 by the above-mentioned synchronization mechanism 31,
Each reel 13 rotates forward or backward in synchronization. Then, the cables C are rewound on the reel 13 at the time of normal rotation, and the cables C are wound at the time of reverse rotation. Alternatively, the cables C may be wound around the reel 13 during normal rotation, and the cables C may be rewound during reverse rotation. Reference numeral 47 denotes a support box provided on the machine base 11 to support the rack gear 43 so as to be able to move forward and backward, and to cover the pinion gear 44, the forward rotation shifter 45, and the reverse rotation shifter 46. 48 is machine stand 1
1 and a bearing provided on the support box 47 to rotatably support the reel 13. The rotation speed of the reel 13 of the drive unit 30, particularly the rotation speed when the cables C are sent out, is set in accordance with the traveling speed of the traveling body 1 as much as possible.

As shown in FIGS. 1, 9 and 10, the detecting section 50 includes a supporting section 51 for supporting the cables C so that the cables C can be slackened (slacked) in a substantially U-shape. The support portion 51 is provided at the intersection of the manhole M and the sewer pipe K, and is connected to the connection pipe 52 connected to the sewer pipe K and through which the cables C are routed, and the inlet opening 52a of the connection pipe 52. A pair of restricting plates 53 that oppose each other so as to sandwich the four fixed, converged and hanging cables C from both sides and restrict the left and right movement of the cables C, and an inlet of the connection pipe 52 between the restricting plates 53. The cables C that are hanging down from the opening 52a are bent, and the cables C before the connecting pipe 52 are bent.
And a supporting roller 54 for supporting the
Cables C can be slackened in a substantially U-shape in the cable parts before reaching 4. Reference numeral 55 denotes an erecting member which is installed between the connection pipe 52 and the wall surface of the manhole M facing the connection pipe 52 and presses and fixes the connection pipe 52 against the wall surface of the manhole M. The pressure is configured to be adjustable. The support roller 5
A row of guide rollers 57 for guiding the cables C when the cables C are drawn into the feeder 10 and returned is provided on the upper side of the space 4 and between the restriction plates 53. Reference numeral 58 denotes a regulating roller provided between the regulating plates 53 so as to face the row of the guide rollers 57 and regulates the swing of the hanging cables C.

The detecting section 50 has a detecting switch section 60 for detecting whether the lower end of the slack portion of the cables C, which is supported by the supporting section 51 and has a substantially U-shaped slack, is higher or lower than a predetermined position. . The detection switch unit 60 includes a regulating plate 53.
The upper limit switch 61 and the lower limit switch 62 that are provided at different heights and detect a slack portion of the cables C that are supported by the support portion 51 and slack in a substantially U-shape are configured. Upper limit switch 61 and lower limit switch 62
May be constituted by any sensor such as a proximity sensor, a photoelectric sensor, or a switch sensor that is turned on and off by contact of a cable. The control unit 70 includes the detection switch unit 60
Is high, the cylinder device 40 of the drive unit 30
And a function of stopping the cylinder device 40 of the drive unit 30 when the detection switch unit 60 detects that the detection switch unit 60 is low. That is, when the upper limit switch 61 detects the upper limit switch 61, the controller 70
0 is activated, and when the lower limit switch 62 detects, the function of stopping the cylinder device 40 of the drive unit 30 is provided. The control unit 70 also has a function of disabling the detection of the detection switch unit 60 when the cables C are drawn into the feeding unit 10 when the forward rotation shifter 45 and the reverse rotation shifter 46 are switched by the switching mechanism. It has. As shown in FIG. 9, reference numeral 71 denotes a nozzle for injecting the cleaning liquid onto the cables C drawn into the feeding unit 10,
The connection pipe 52 is provided above the entrance opening 52a. The nozzle 71 has a cleaning liquid supply device 19 installed on the ground.
Is supplied through the pipe 72 from the cleaning liquid.

Therefore, when searching for the sewer pipe K by the search system including the in-pipe cable access device S according to the embodiment of the present invention, the search is performed as follows. As shown in FIG. 1, an in-pipe cable access device S
And the traveling body 1 is installed at a required location, and the traveling body 1 is connected to an air cable (Ca) and a cabtire cable (C).
b), a wire cable (Cc), and a camera cable (Cd). The four cables C are linked to move the traveling body 1 to the sewer pipe K. The traveling of the traveling body 1 is performed by alternately bringing the leg devices 7 of the driving vehicle 2 into contact with the tube wall Ka, and expanding and contracting the body 6 in each case so as to be performed as a so-called "worm".

As shown in FIG. 9, when the cables C are pulled as the traveling body 1 travels, the cables C
The cables C are detected by the upper limit switch 61 because the slack in the support portion 51 is eliminated. Accordingly, the control unit 70 operates the cylinder device 40 of the driving unit 30 assuming that the detection switch unit 60 is high. When the driving unit 30 is driven, the reel 13 is rotated synchronously and the conversion roller 21 is also rotated by the synchronization mechanism 31 in the pulling unit 10, so that the cables C are sequentially sent out. . in this case,
Since the reel 13 is rotated synchronously by the synchronization mechanism 31, the cables C are reliably sent out by the same length as compared with the case where the reels 13 are rotated and sent out simply by the pulling force of the cables C. I will go. Also, since the cables C are guided by the guide section 20, they are reliably converged and sent out. In particular, since the sending direction is defined by the conversion roller 21 and the guide roller 25, the sending of the cables C is stabilized. In particular, although there are a plurality of cables C, these are converged by the conversion roller 21 and the guide roller 25 and are hung down, so that the feeding is ensured.

In the traveling process of the traveling body 1, the pipe wall Ka on which the traveling body 1 travels is not always in a uniform state, and mud, dirt, rust, etc. are deposited or adhered. In addition, poor conditions, such as the presence of water pools, cause the traveling body 1 to receive resistance, causing irregularities in traveling and failing to travel at a constant speed. The cable C is slackened, leading to a slack.
The lower end of the slack portion of the cables C generated in Step 1 and having a substantially U-shape is lowered, and the cables C are finally detected by the lower limit switch 62 as shown in FIG. Accordingly, the control unit 70 determines that the detection switch unit 60 is low, and stops the cylinder device 40 of the drive unit 30. As a result, further slack of the cables C is prevented. For this reason, a situation in which the slack cables C are entangled is prevented, and a situation in which the traveling of the traveling body 1 is hindered is prevented. Also, even in the event that the traveling body 1 is stopped in the pipe due to the influence of deposits or deposits, the feeding of the cables C is stopped, thereby preventing an unexpected situation. . Cables C are
Since the sheet is guided by the guide portion 20, the feeding direction is defined by the conversion roller 21 and the guide roller 25, so that the feeding is reliably performed.
It is possible to make the detection unit 50 surely detect the deflection.

Then, as the traveling of the traveling body 1 proceeds,
As the traveling body 1 travels, the cables C are pulled, and the slack in the supporting portion 51 of the cables C is eliminated again.
1 is detected. Accordingly, the control unit 70 determines that the detection switch unit 60 is high, and
Is operated again. In this way, regardless of the traveling state of the traveling body 1, the range in which the cables C slack is limited, so that a situation in which the cables C are excessively sagged and entangled is prevented, and the traveling of the traveling body 1 is prevented. A situation that causes trouble is prevented. That is, since the cables C are sent out according to the slack state of the cables C, the running conditions of the running body 1 can be maintained as good as possible by synchronizing with the running body 1. For this reason, it is possible to travel a long distance exceeding 1 km, and it becomes possible to extremely easily maintain and manage the sewer pipe K and the like. Further, since the detection is performed by the two switches of the upper limit switch 61 and the lower limit switch 62,
Compared to the case where one switch is used, the range of the slack can be set.
Can be controlled without making the ON / OFF cycle extremely short, and adverse effects on equipment can be prevented. Further, since the cables C are detected by the slack U-shaped portion, the detection is easy and the detection can be reliably performed.

Next, when the traveling body 1 reaches the traveling end and pulls it back, the switching mechanism switches the forward rotation shifter 45 and the reverse rotation shifter 46 of the driving unit 30 to drive the driving unit 30. At this time, the control unit 70
Disable detection. As a result, in the feeding unit 10, the reel 13 is rotated in synchronization with the synchronization mechanism 31 and the conversion roller 21 is also rotated, so that the cables C are sequentially rewound. At this time, the traveling body 1 is pulled back mainly by the operation of the wire cable (Cc). Also in this case, since the cables C are guided by the guide section 20, they are reliably converged and rewinded. In the rewinding process, the cleaning liquid is jetted from the nozzle 71 to the cables C drawn into the feeding unit 10 in the support unit 51.
Is cleaned, so that adverse effects due to dirt attached to the cables C are prevented.

In the above embodiment, the reel 13
The number is not limited to the number described above, and may be changed as appropriate. For example, the number of reels 13 may be four, and the camera cable (Cd) may be wound around and provided on the feeding unit 10. You can In addition, the type of the cables C is not limited to those described above, and may be any cable such as a cable for measuring equipment. The driving unit 30
The mechanism is not limited to the mechanism operated by the above-described cylinder device 40, and may be appropriately changed, for example, to a mechanism operated using an electric motor.
In addition, it goes without saying that the in-pipe cable access device S of the present invention may be used not only for the sewer pipe K but also for any pipe.

[0023]

As described above, according to the in-pipe cable entry / exit device of the present invention, the tension of the cables is detected by the detection unit when the cables are sent out, and the driving unit is operated based on this detection. Activate to send out cables, so stop driving when cables are too slack,
It is possible to control to start driving when there is no slack, so that regardless of the running state of the running body, it is possible to prevent cables from becoming too slack and getting tangled, and hinder running of the running body. The situation of giving can be prevented. That is, the cables can be sent out according to the slack state of the cables, so that the running conditions of the running body can be maintained as good as possible by synchronizing with the running body. Then, the support unit that supports the detection unit so that the cables can slack in a substantially U-shape, and whether the lower end of the slack portion of the cables that is supported by the support and slack in the substantially U-shape is higher than a predetermined position. Since a cable is detected by the slack U-shaped part, the detection is easy, and the detection can be assured.

Further, the detection switch section, since it is constituted by a upper switch and a lower limit switch for detecting the slack portion of the height substantially disposed in different positions U-shape sagging cables, upper switch And the lower limit switch perform the detection, so that the range of the slack can be set as compared with the case where the detection is performed by one switch.
There is a margin in the detection, and control can be performed without extremely shortening the ON / OFF cycle of the drive unit, and accordingly, adverse effects on devices can be prevented.

Furthermore, the feed引部, and configured with a reel for winding the forward and reverse rotatable provided cables in the machine frame kite
Thus, the cables can be held on the reel, so that the feeding and pulling-back can be easily performed. Furthermore, since the feeding section is provided with a guide section provided on the machine base and guiding cables entering and exiting the machine section, since the cables are guided by the guide section, the feeding can be reliably performed. The deflection can be reliably detected. In this case, the guide portion, the cables are wound and configured to include a conversion roller for redirecting the cables to enter and exit direction, further, the guide portion, are arrayed in the out direction of the cables cables since it is configured with a plurality of guide rollers for supporting the, by the conversion roller or guide roller, since dispensing direction is defined, reliably feeding can be performed, therefore, reliably perform detection of the deflection detection unit Can be made.

Further, by providing a plurality of reels to allow winding a plurality of cables, the drive unit since constructed with synchronous mechanism for synchronously rotating the reels, the synchronization mechanism, the reel in synchronization Is rotated, so that the cables can be reliably sent out by the same length as compared with the case where the reels are rotated and sent out simply by the pulling force of the cables. Can be reliably detected. In this case, the synchronization mechanism includes a sprocket provided on the rotating shaft of each reel, and a chain that is wound around each sprocket and moves each sprocket, so that it can be created by a simple mechanism. it can.

When the drive unit is configured to be operated by a cylinder device, and the forward and reverse rotation of the reel is switched by a forward rotation shifter and a reverse rotation shifter, an air cylinder or a hydraulic cylinder can be used. When the apparatus is used outdoors, such as for searching for a sewer pipe, the power source of the apparatus can be easily obtained, and the switching operation can be easily and reliably performed by the shifter. Further, when a cable that is drawn into the feeding unit is provided with a nozzle that sprays a cleaning liquid, the cable can be cleaned, so that it is possible to prevent adverse effects due to dirt and the like attached to the cable.

[Brief description of the drawings]

FIG. 1 is a diagram showing an access device for in-pipe cables according to an embodiment of the present invention, together with a system for searching for a sewer pipe to which the apparatus is applied.

FIG. 2 is a perspective view showing a feeding unit of the in-pipe cable access device according to the embodiment of the present invention.

FIG. 3 is a front view showing a feeding unit of the in-pipe cable access device according to the embodiment of the present invention.

FIG. 4 is a plan view showing a feeding unit of the pipe access device according to the embodiment of the present invention.

FIG. 5 is a bottom view showing a feeding unit of the in-pipe cable access device according to the embodiment of the present invention.

FIG. 6 is a side view showing a feeding unit of the in-pipe cable access device according to the embodiment of the present invention.

FIG. 7 is a main part diagram showing a drive unit of the access device for in-pipe cables according to the embodiment of the present invention.

FIG. 8 is another main view showing the drive unit of the access device for the in-pipe cables according to the embodiment of the present invention.

FIG. 9 is a front view showing a detection unit of the in-pipe cable access device according to the embodiment of the present invention.

FIG. 10 is a plan view showing a detection unit of the in-pipe cable access device according to the embodiment of the present invention.

[Explanation of symbols]

 S In-pipe cable entry / exit device K Sewer pipe M Manhole 1 Running object C Cables Ca Air cable Cb Captire cable Cc Wire cable Cd Camera cable 10 Feeding unit 11 Machine base 12 Rotary shaft 13, 13a, 13b, 13c, 13d Reel 14 Traverser 15 Doorway 20 Guide unit 21 Conversion roller 25 Guide roller 30 Drive unit 31 Synchronous mechanism 40 Cylinder device 43 Rack gear 44 Pinion gear 45 Forward rotation shifter 46 Reverse rotation shifter 50 Detecting unit 51 Supporting unit 52 Connecting pipe 53 Regulator plate 54 Support Roller 55 Installation member 60 Detection switch unit 61 Upper limit switch 62 Lower limit switch 70 Control unit 71 Nozzle

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) E03F 7/00 B61B 13/10 E03F 9/00

Claims (3)

(57) [Claims] 1. A cable connected to a traveling body traveling in a pipe is sent out following the traveling of the traveling body.
An in-pipe cable entry / exit device for pulling out cables sent out, comprising: a pulling section driven to feed or pull in cables; a driving section driving the drawing section; a detecting unit that detects the tension state of, e Bei a control unit based on a detection of the detection knowledge unit actuates the driving unit, the detection unit, the cables can sag in a substantially U shape
And a substantially U-shape supported by the support
The lower end of the slack part of the cables that have slackened in the specified position
With a detection switch that detects whether it is higher or lower
And the detection switch section is provided at different heights.
Cables that are supported by the support section and slack in a substantially U-shape
An upper limit switch and lower limit switch
When the upper limit switch detects the control unit,
When the drive unit is operated and the lower limit switch detects,
The drive unit is configured to have a function of stopping, and the feeding unit is provided on a machine base and the machine base is rotatably and reversely rotatable.
And a reel for winding cables.
In addition, the transfer unit is installed on the machine
And a guide portion for guiding the cables to be connected.
Equipped with a conversion roller that changes the direction of the class in and out
In addition, the guide section should be
A plurality of guide rollers arranged in a row to support the cables
It is possible to wind multiple cables by providing multiple reels
Then, the drive unit rotates the reels in synchronization with each other.
The synchronous mechanism is configured to rotate each reel.
The sprocket provided on the rotating shaft and each sprocket
A chain that is passed over and moves each sprocket
An access device for in-pipe cables and the like, characterized in that it is provided . 2. A cylinder device comprising a piston for moving forward and backward, a cylinder for moving the piston forward and backward, a rack gear provided on the piston of the cylinder device for moving forward and backward, and a rotating shaft of the reel. A pinion gear that is provided to be rotatable forward and backward and meshes with the rack gear and is rotated forward and backward by advancing and retreating of the rack gear; A forward rotation shifter for disabling rotation and linking the pinion gear to the rotation axis of the reel, and disabling the rotation of the pinion gear provided on the rotation axis of the reel in the normal rotation direction and enabling the rotation in the reverse rotation direction to enable the rotation of the pinion gear; claim 1, wherein <br/> tube for cables, characterized by being configured and a reverse shifter to coordinate the rotation shaft of the reel Entrance and exit devices. 3. A contractor comprising a nozzle for injecting a cleaning liquid into cables drawn into the feeder.
3. The access device for in-pipe cables according to claim 1 or 2 .