JPH0886011A - Pipe inspection device for small sewage pipe - Google Patents

Abstract

PURPOSE: To facilitate bringing an inspection device into a small diameter manhole. CONSTITUTION: In a pipe inspection device mounting an industrial small TV camera with an illuminator at the front end and provided with a transfer means at the lower part, a cable 12 for the electric source and control conducted from the pipe inspection device body 1 is connected to a rotary connector 9 which is freely rotatable between the rear part pivotted at the upper corner 1a of the rear end of the pipe line inspection device body 1 and the upper part thereof. The rotary connector 9 is arranged to erect against the pipe inspection device body 1 when vertically bringing it in a manhole, and horizontally rotated when bringing it into a pipe. And then the cable for electric source and control is conducted to the rear side and the cable 12 is smoothly brought in without troubles when it is brought in the small pipe from a small diameter manhole.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe inspection device for a small-diameter sewer system for inspecting the inside of a small-scale sewer system by television shooting.

[0002]

2. Description of the Related Art Generally, with the modernization of cities, public sewer networks have been developed in each region. In particular, so-called rural village drainage channels for small-scale villages such as rural areas, fishing villages, and small towns have recently been implemented as a national subsidy project, and the diffusion rate of sewerage is increasing. . In this case, the small sewer pipeline has a pipe diameter of 150 m.
A small-diameter pipe of about m to 200 mm is used, and a manhole (box) arranged to follow the pipe has a diameter of 30 mm.
It becomes a mode of small-scale piping (small-diameter pipe sewer) using a circular small box of about 0 mm. Sewer of this kind (small-diameter sewer)
However, when laying the pipe and then inspecting and maintaining the pipe after that, a self-propelled pipe inspection device equipped with an industrial TV camera is brought into the pipe, and the inside of the pipe is photographed by the camera. The condition of the pipeline is checked by displaying it on a monitor standing on the ground. However, the diameter of the conventional self-propelled pipeline inspection device for large-diameter pipelines used for large-scale sewers is too small to deal with, and a compact self-propelled pipeline inspection device is used. Becomes

[0003]

However, as the smallest self-propelled pipeline inspection device currently being developed, the total length is 270 m.
The maximum size is about m, and this pipe inspection device is temporarily lowered into a small manhole with a diameter of 300 mm, and horizontal piping is performed horizontally from the bottom of the manhole in this state.
In order to enter a small-diameter conduit of about 50 mm to 200 mm, it is very difficult for a type in which a so-called flexible power supply / control cable is simply led out from the main body backward as in the conventional case. For example, even if the self-propelled pipeline inspection device is carried into a vertical manhole in an oblique posture to the bottom position, when entering a pipeline with a small diameter, the pipeline inspection device must be placed in a horizontal posture. However, if the cable connector is fixed, the power / control cable will not bend smoothly. As a result, the cable itself is supported by the peripheral wall of the manhole, and automatic advancement to the horizontal conduit cannot be expected, which makes loading work troublesome and damages the cable itself.

Further, in the conventional self-propelled conduit inspection apparatus, the illumination for the television camera has a structure in which a lighting lamp is directly arranged around the camera in a single housing. For this reason, when replacing a consumable lighting lamp, it is troublesome to open the entire housing including the TV camera, and each time the housing is closed, the waterproofness of the TV camera must be taken into consideration. Replacement work is not easy. Further, in the type in which the TV camera and the illumination lamp are incorporated in a single housing as described above, the heat dissipation of the lamp causes the CCD element of the TV camera to become too warm, and C
There is a possibility that the characteristics of the CD may change, and the change in color tone and the decrease in sensitivity are likely to occur. Moreover, there is a defect that the heat dissipation causes dew condensation on the lens surface of the camera. Therefore, a new development of a pipeline inspection device capable of handling a small-diameter manhole is awaited.

In view of the above situation, the present invention makes a connector of a power supply / control cable derived from a main body of a pipeline inspection device rotatable, for example, in a range of 90 ° so that a sewer pipeline having a small diameter from a manhole having a small diameter can be obtained. The purpose of the present invention is to provide a pipeline inspection device for small-diameter sewers, which makes it easy to carry into small-scale sewers and enables maintenance and ideal survey of small-scale sewers.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a conduit inspection apparatus equipped with a small industrial television camera having an illuminating section at the front end and a traveling means at the bottom, which is derived from the conduit inspection apparatus main body. The power supply / control cable is connected to a rotary connector that is pivotally attached to the upper corner of the rear end of the main body of the pipeline inspection device and is rotatable between the rear and upper portions of the pipeline. The inspection device is placed upright with respect to the main body, and when the pipe enters, the rotating connector is horizontally rotated and the power supply / control cable is led out to the rear.

Further, according to the present invention, in a pipeline inspection device having a small industrial TV camera having an illuminating section at the front end and a traveling means at the bottom, the illuminating section is provided in the camera body section of the small TV camera. A lamp is housed in a lighting body part mounted on the upper part of the body via a heat insulating material, and the lighting body part and the camera body part are connected to each other by a power supply with contact pins, and the power is derived from the main body of the pipeline inspection device. The dual-purpose control cable is connected to a rotary connector that is pivotally attached to the upper corner of the rear end of the main body of the pipeline inspection device and is rotatable between the rear and upper portions, and the rotary connector is installed when the manhole is vertically loaded. It is placed upright with respect to the main body, and when the pipe enters, the rotary connector is rotated horizontally and the power supply / control cable is led out to the rear.

[0008]

As described above, the power / control cable led out from the pipeline inspection apparatus main body is connected to the rotary connector pivotally mounted at the upper corner of the rear end of the pipeline inspection apparatus main body, and the cable is vertically and horizontally aligned. Since it can be rotated in any direction, when the pipeline inspection device is carried into the manhole, the pipeline inspection device main body is kept in a horizontal posture, and in this state, the rotary connector is erected with respect to the pipeline inspection device main body and also serves as a power source. If the control cable is extended vertically, the pipeline inspection device can be easily carried into the manhole by suspending it, and at the bottom of the manhole, the pipeline inspection device can be used as a traveling means, for example, a motor-driven crawler belt. In the self-propelled type, the pipeline inspection device enters the pipeline by itself,
And at this time, the power supply and control cable in the drooping state is automatically tilted as the rotary connector sequentially turns backward with the forward movement,
It is horizontally extended to the rear end of the pipe inspection device body. In other words, the pipe inspection apparatus can carry in the pipe without any hindrance by automatically rotating the cable when carrying the pipe from the small-diameter manhole into the pipe serving as the small-diameter main pipe.

Further, since the lamp is housed in an illumination body portion having a structure different from that of the camera body portion when replacing the illumination lamp, the illumination body portion is detached from the camera body portion by loosening a mounting bolt, It is sufficient to open only the lid and replace the illumination lamp housed inside. Of course, since the illuminating section is configured by the illuminating body section and the camera body section through the heat insulating material, heat radiation from the lamp is not transmitted to the TV camera.

[0010]

The present invention will be described below with reference to the drawings of the embodiments.

FIG. 1 shows an embodiment of a self-propelled pipe line inspection device in which traveling means uses a crawler belt driven by a motor, and 1 is a belt traveling body 3 which is a crawler belt which is rotated by a drive of a motor 2 at a lower portion. Self-propelled pipeline inspection in which a small industrial TV camera 5 serving as a CCD camera equipped with a CCD element is mounted on the front end, and an illumination unit 6 is mounted on the upper part of the small TV camera 5. In the apparatus main body, a connector receiving step portion 7 having an open upper side and a rear side is formed at a rear end upper corner portion 1a of the conduit inspection apparatus main body 1, and bearing portions 8 provided on both sides of the connector receiving step portion 7 are formed. The swivel portion 10 formed at the base of the rotary connector 9 bears shaft portions 10a projecting from both sides of the swivel portion 10 so that the rotary connector 9 is rotatable in a 90 ° range between the upper side and the rear side. In this case, an O-ring 11 is attached to the shaft portion 10a on one side of the rotary connector 9 which is the electric wire guide port side to seal the pipe inspection device main body 1. Reference numeral 12 denotes a power supply / control cable that is inserted and connected to the rotary connector 9, and guides an electric wire portion 12a of the cable 12 to the main body 1 of the pipeline inspection device and guides it to a control portion 13 disposed in the upper center. 14 is a power supply circuit for a small television camera.

Further, the self-propelled means 4 controlled by the controller 13 drives the rotation of the motor 2 through a primary gear box 15 and a transmission gear 16 and a drive pulley on which belt traveling bodies 3 arranged on both sides of the machine are hung. 17 and the small industrial television camera 5 is also controlled by the control unit 13.

Further, the illuminating section 6 accommodates the lamps 18 side by side in the illuminating body section 6a of the unit structure, and interposes the heat insulating material 19 made of heat insulating rubber or the like on the upper surface of the camera body section 5a as the main body. The electrical connection means of the illuminating section 6 is mounted on a power supply circuit by inserting a connecting contact pin 20 protruding from the lower surface of the illuminating body section 6a into an outlet hole 20 'provided in the camera body section 5a. Contact is made (Conversely, if necessary, camera body 5a
The contact pin 20 for connection may be provided so as to project on the side, and the outlet hole 20 'may be provided on the side of the lighting body 6a). Further, the illumination unit 6 itself is fixed by a detachable structure in which mounting bolts 21 which are vertically arranged on both sides of the illumination body unit 6a are screwed into the camera body unit 5a. It becomes the road inspection device 22.

Next, this operation will be described. The self-propelled pipe inspection device 22 is used as, for example, a caliber 30 for a rural village drainage canal.
At the time of loading into the 0 mm manhole 23, first, the rotary connector 9 arranged at the upper corner 1a of the rear end of the conduit inspection apparatus body 1.
Is erected and rotated, and the power supply / control cable 12 connected to the rotary connector 9 is erected to be vertically led out. Even if it exists, it can be lowered into the manhole 23 by the hanging body 26 while maintaining the horizontal posture, and can be easily carried in (see FIG. 5).

Here, when the self-propelled pipeline inspection device 22 reaches the bottom of the manhole 23, the self-propelled pipeline inspection device 22 is self-propelled into a 150 mm small-diameter sewer pipe 24 laterally connected to the bottom. In this case, the control of the self-propelled pipeline inspection device 22 is performed by a control panel mounted on an inspection vehicle (not shown) feeding the power supply / control cable 12 standing on the ground, similarly to the known sewer inspection. The motor 20 is remotely driven by an appropriate operation, and the belt traveling body 3 is caused to travel by the front rotation of the rotation of the motor 20.

Here, when the self-propelled pipeline inspection device 22 enters the pipeline, the rotary connector 9 provided at the rear upper corner 1a of the pipeline inspection device body 1 uses the shaft portion 10a as a fulcrum. Since the cable 12 for power supply and control in the upright state connected to the rotary connector 9 is rotatable, the vertical extension line inclines in accordance with the length of penetration of the main body 1 of the pipeline inspection device, and the main body of the pipeline inspection device is inspected. 1 advances to a predetermined length and the rotary connector 9 turns 90 °
The rotation causes the cable 12 to become horizontal toward the rear. That is,
When the pipeline inspection apparatus main body 1 enters the sewer pipeline 24, the vertically derived power supply / control cable 12 automatically shifts to horizontal at the manhole position (see FIG. 6). This is
It is possible to smoothly carry in the self-propelled pipeline inspection device 22 from the manhole 23 to the sewer pipeline 24 without being hindered by the power supply / control cable 12.

In the pipeline inspection of the self-propelled pipeline inspection device 22 that has entered the sewer pipeline 24, the illumination lamp 18 at the front end is turned on to illuminate the pipeline, and the interior of the pipeline is photographed by the small television camera 5, The image is displayed on a monitor (not shown) on the ground, and a known pipeline inspection is performed.

When the lamp of the lighting unit 6 is burnt out for a long period of time, this replacement work is performed by attaching the mounting bolt 21 to the lighting body unit 6a so that the lighting body unit 6a can be attached in a pair of left and right. The bolt 21 may be loosened with a predetermined tool and removed from the camera body portion 5a. In this case, the connection contact pin 20 on the lower surface of the illumination body portion 6a is pulled out from the outlet hole 20 'of the camera body portion 5a to release the electrical connection. After that, the illumination lid portion 25 at the front position of the illumination body portion 6a may be removed by loosening the screw 26 and the lamp 18 inside may be replaced. After replacing the lamp 18, the lid may be fixed and the camera body may be fixed in the opposite manner to the above.

Further, since the illuminating section 6 has a structure independent from the small TV camera 5 with the heat insulating material 19 interposed, the heat generated by the illuminating lamp 18 is hard to be conducted to the camera body section 5a, and the illuminating section 6 is small. CCD of TV camera 5
It does not warm the device and does not degrade the CCD characteristics. Further, the heat of the lamp does not cause dew condensation on the camera lens 5 '.

The duct inspection device 22 has been described as a self-propelled type in which crawler belts are attached. However, when the traveling means is a simple vehicle or a non-self-propelled type in which a skid is installed, the duct inspection device main body 1 is a manhole. After reaching the bottom, it may be manually inserted into the conduit with a separate pushing tool (not shown).

[0021]

As described above, in the pipeline inspection device for a small diameter sewer according to the present invention, the power supply / control cable derived from the pipeline inspection device main body is rotatable at the rear part of the main body by the rotary connector. By suspending the cable in a vertical state when carrying it into a small-diameter manhole, it is possible to easily carry it down even if it is in a pipeline inspection device (traveling vehicle) that has a size close to the manhole diameter, and it is also possible to use small-diameter sewer from the bottom. When the pipeline inspection device is run on the pipeline, the rotary connector automatically rotates with this entry, and the power supply / control cable is directed horizontally toward the rear to allow smooth forward movement. In addition, since the illumination unit is configured to be mounted on the camera body that is the main body, the illumination lamp can be replaced easily without worrying about the television camera side. Moreover, since the heat insulating material is interposed between the lighting unit and the camera body, the lamp heat on the lighting unit side is not conducted to the TV camera side, and the CCD characteristics of the camera are changed without heating the CCD element. It does not cause changes in color tone or decrease in sensitivity. Also. This has the effect of preventing condensation on the lens due to heat dissipation.

[Brief description of drawings]

FIG. 1 is a perspective view of a self-propelled pipeline inspection device for a small diameter sewer system according to an embodiment of the present invention.

FIG. 2 is a side view of the main part.

FIG. 3 is a side view showing the inside.

FIG. 4 is a cross-sectional view of a rotary connector section.

FIG. 5 is an explanatory view of loading the self-propelled pipeline inspection device into a manhole.

FIG. 6 is an explanatory diagram of entry into the sewer pipe from the manhole.

[Explanation of symbols]

 1 Pipeline Inspection Device Main Body 1a Rear Upper Corner 4 Self-propelled Means 5 Industrial Small Television Camera 6 Lighting Unit 9 Rotating Connector 12 Power / Control Cable 18 Lamp 19 Insulation Material

Claims (2)

[Claims] 1. A conduit inspection apparatus equipped with a small industrial TV camera having an illuminating section at its front end and a traveling means at the bottom thereof, wherein a power supply / control cable led out from this conduit inspection apparatus main body is provided. At the upper corner of the rear end of the pipeline inspection apparatus main body, connected to a rotary connector which is rotatable between the rear and the upper part of the pivotal connection, and the rotary connector is arranged upright with respect to the pipeline inspection apparatus main body when the manhole is vertically loaded. A pipe inspection device for small-diameter sewers, wherein the rotary connector is horizontally rotated when the pipe enters, and the power supply / control cable is led out to the rear. 2. In a pipeline inspection device having a small industrial TV camera with an illuminating section mounted at the front end and a traveling means at the lower end, the illuminating section is heat-insulated above the camera body of the small TV camera. A lamp for accommodating a lamp in a lighting body mounted via a material, and a power supply / control cable which is derived from the conduit inspection apparatus main body and has a partition structure in which the lighting body and the camera body are connected by a power supply with a contact pin. Is connected to a rotary connector which is pivotally attached to the upper corner of the rear end of the main body of the pipeline inspection device and is rotatable between the rear and the upper part of the main body, and the rotary connector is erected to the main body of the pipeline inspection device when the manhole is vertically loaded. A pipe inspection device for small-diameter sewers, which is arranged so that the rotary connector is horizontally rotated when the pipe enters and the power supply / control cable is led out to the rear.