JPH0853879A - Underground pipe cleaning device - Google Patents

Abstract

(57) [Abstract] [Purpose] Providing a cleaning device capable of efficiently removing deposits from underground pipes [Constitution] The device comprises a rotary drive mechanism 12 and a traveling drive mechanism 14.
It has a swing drive mechanism 15, a movement drive mechanism 16, a front-back drive mechanism 18, and an endoscope 20. Mechanism 12
A rotary shaft 22 is rotatably arranged at a position eccentric from the center of the sewer pipe 10 and is driven by a motor 12a.
And a gear train arranged between the rotating shaft 12b and the rotating shaft 22 of the motor 12a. A cutting bit 24 having an outer diameter smaller than the inner diameter of the sewer pipe 10 is attached to the rotary shaft 22. The mechanism 14 has wheels 14a, a gear 14b provided between the wheels 14a, and a traveling drive motor 14c. The swing movement mechanism 15 swings the rotary shaft 22 along the inner peripheral surface of the sewer pipe 10, and is fixed to the hollow cylindrical portion 15a fixed to the case 26 and the cylindrical portion 15a. And a drive motor connected to the gear.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underground buried pipe cleaning device, and more particularly to a cleaning device capable of cutting and removing deposits such as mortar accumulated and solidified in sewer pipes.

[0002]

2. Description of the Related Art In a sewer pipe, solids contained in miscellaneous waste water discharged from each household are deposited on a bent portion or the like, which hinders smooth outflow. Various types of cleaning devices have been proposed as means for removing accumulated foreign matter. As this type of cleaning device, for example, as disclosed in Japanese Utility Model Application Laid-Open No. 64-48188, a relatively large number of cleaning devices have been proposed.

By the way, the wastewater discharged to the sewer pipe also contains, for example, sewage generated at the construction site, and such sewage often contains mortar, cement slurry, etc. When sewage containing such mortar and cement slurry is discharged into the sewer,
The cement solidifies and adheres to the inner surface of the sewer pipe. However, since the solidified deposit of cement is firmly attached to the inner surface of the sewer pipe, there is a problem that it cannot be easily removed by the above-mentioned injection of pressure water. Therefore, for example, Japanese Utility Model Laid-Open No. 3-36083 proposes a cleaning device capable of removing such a solidified product.

The cleaning device disclosed in this publication is arranged on the front side, has a plurality of blades, and has a cutting section for cutting deposits in a pipe by rotating and a drive for rotationally driving this cutting section. The cutting mechanism including the portion is configured to move along the longitudinal direction in the sewer pipe by the moving mechanism. The cutting portion of this device is composed of a rotary cylinder formed in a tubular shape having an outer diameter substantially the same as the inner peripheral diameter of the sewer pipe, and a cutting blade provided on the front side of the rotary cylinder. By rotating and driving with a hydraulic motor, the solidified material accumulated in the pipe is cut and removed by the cutting blade. However, the cleaning device disclosed in this publication has the technical problems described below.

[0005]

That is, the sewer pipe to be cleaned is provided not only with a straight line but also with a bent portion. However, in the cleaning device having the above-mentioned cutting portion, the cylindrical tube is inside the sewer pipe. Since it has an outer diameter that is substantially the same as the circumference, it becomes difficult to move along the longitudinal direction even at a bent portion of the sewer pipe that is not so greatly bent.

Further, it is described that the above-mentioned cleaning device can also cut the end portion of the mounting pipe projecting on the inner surface of the main sewer pipe. There was a risk that cracks would occur in the mounting pipe and that water leakage would occur from these cracks. Furthermore, solid deposits such as cement are rarely attached over the entire circumference of the inner surface of the sewer pipe, but are partially attached, and this should be removed by the cutting part as described above. Also had the problem of being very inefficient.

The present invention has been made in view of such conventional problems, and an object of the present invention is to enable smooth running at a bent portion and also to prevent deposits on underground pipes. An object of the present invention is to provide an underground buried pipe cleaning device capable of efficiently removing only foreign matter such as.

[0008]

In order to achieve the above object, the present invention is rotatably installed at a position eccentric from the center of the underground buried pipe and has an outer diameter smaller than the inner diameter of the underground buried pipe. A rotary shaft to which a cutting tool such as a cutting bit or a brush is detachably attached, a rotary drive mechanism for rotationally driving the rotary shaft, and a travel for traveling the rotary drive mechanism along the longitudinal direction of the buried pipe. An underground buried pipe cleaning device comprising a drive mechanism, wherein a rocking drive mechanism for rocking and moving the rotary shaft along an inner circumference of the underground buried pipe is provided.

The cleaning device includes a movement drive mechanism for moving the rotating shaft so as to move away from or approach the center of the underground buried pipe, and the rotating shaft moves back and forth along the longitudinal direction of the underground buried pipe. A back-and-forth driving mechanism for moving can be provided. The cleaning device configured as described above includes an endoscope that captures an image of the vicinity of the adhered matter removing instrument, and the drive mechanism can be remotely operated based on an image captured by the endoscope.

The rotary drive mechanism has a rotary drive motor installed substantially at the center of the underground pipe and a plurality of gear trains meshing with each other. The rotary gear of the gear train may be attached to the rotary shaft of the rotary drive motor, and the rotary gear of the gear train may be provided on the rotary shaft. Further, the movement drive mechanism can be configured by a link mechanism that connects the rotation shafts of the gears of the gear train and a vertical drive mechanism unit that moves the rotation shaft in the vertical direction.

[0011]

According to the underground buried pipe cleaning device having the above structure, a rotary shaft rotatably installed at a position eccentric from the center of the underground buried pipe, and a rotary drive mechanism for rotationally driving this rotary shaft,
Since the rotary drive mechanism has a traveling drive mechanism that travels along the longitudinal direction of the buried pipe and a swing drive mechanism that swings the rotation shaft along the inner circumference of the underground pipe, Operate the drive mechanism to bring the rotary shaft close to the part where foreign matter is to be removed, and then activate the oscillating movement mechanism to position the rotary shaft, and then activate the rotary drive mechanism. Then, the rotating shaft to which the attachment removing device such as the cutting bit or the brush is detachably attached rotates, and the foreign matter is removed by the cutting bit or the brush.

In this case, since the deposit removing device attached to the rotary shaft has an outer diameter smaller than the inner diameter of the underground buried pipe, the deposit removing device passes through the bent portion of the underground buried pipe. There is no obstacle when doing. Further, even if the end portion of the mounting pipe projects inside the buried pipe, the rotating shaft can be swung by the swing movement mechanism to a position where the deposit removing device does not interfere with the projecting portion.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. 1 to 9 show an embodiment of the underground buried pipe cleaning device according to the present invention.
The cleaning device shown in the figure is for cleaning the inside of the sewer pipe 10, and includes a rotation drive mechanism 12, a traveling drive mechanism 14, a swing drive mechanism 15, a movement drive mechanism 16, and a front-back drive mechanism 18. , And an endoscope scope 20.

The rotary drive mechanism 12 drives the rotary shaft 22 rotatably arranged at a position eccentric from the center of the sewer pipe 12, and is a rotary drive motor installed substantially at the center of the sewer pipe 10. 12a and this rotary drive motor 1
It has a gear train 21 arranged between the rotating shaft 12b of 2a and the rotating shaft 22. The gear train 21 of this embodiment is
A driving gear 21a fixed to the rotating shaft 12b, a first intermediate gear 21b meshing with the driving gear 21a, and a first intermediate gear 21b.
A shaft 21c having an intermediate gear 21b provided on one end side, and a second intermediate gear 21d fixedly provided on the other end side of the shaft 21c,
A third intermediate gear 21e meshing with the second intermediate gear 21d
And a sliding gear 21f that is meshed with the third intermediate gear 21e and is fixed to the rotary shaft 22.

An attachment removing device such as a cutting bit or a brush having an outer diameter smaller than the inner diameter of the sewer pipe 10 is detachably attached to the rotating shaft 22. In the illustrated example, solid matter such as solidified mortar is attached. Disk-shaped cutting bit 24 for cutting
Is attached to the rotary shaft 22. A shaft 21c having first and second intermediate gears 21b and 21d provided at both ends is rotatably supported by a box-shaped case 26 with four corners cut out, and a rotary shaft 22 is provided from the front of the case 26. An elongated hole 27 is provided on the front surface side of the case 26 so as to penetrate therethrough, at a portion where the rotary shaft 22 penetrates.

On the other hand, the traveling drive mechanism 14 has a plurality of wheels 14a pivotally mounted on a base 28, a plurality of gears 14b provided between rotating shafts of the respective wheels 14a and meshing with each other, and one end side of the wheels 14a. A traveling drive motor 1 whose rotary shaft is connected to the gear 14b
4c. The swing movement mechanism 15 swings the rotation shaft 22 along the inner peripheral surface of the sewer pipe 10, and has one end fixed to the back side of the case 26 and a hollow cylindrical portion 15a having both ends open. And a drive motor 15d in which a gear 15b fixed to the outer periphery of the rear end of the cylindrical portion 15a and a driving gear 15c meshing with the gear 15b are connected.
It consists of and.

The shaft 21c of the rotary drive mechanism 12 has a cylindrical portion 1
The rotary drive motor 12a and the drive motor 15d are arranged side by side on the front side of the base 28. When the drive motor 15d is rotationally driven, the gear 15c,
Since 15d is meshed, the case 26 swings,
Along with this, the cutting bit 24 swings along the inner peripheral surface of the sewer pipe 10. The movement drive mechanism 16 moves the rotating shaft 22 so as to separate from or approach the center of the sewer pipe 10.

The moving drive mechanism 16 of the present embodiment is provided between the shafts of the second and third intermediate gears 21d and 21e and the sliding gear 21f of the rotary drive mechanism 12 so as to connect these shafts. And a vertical drive mechanism 32 for moving the rotary shaft 22 in the vertical direction. The link mechanism 30 includes a second intermediate gear 21d and a third intermediate gear 21e.
And a link plate 30b provided between the third intermediate gear 21d and the bevel gear 21f. These plates 30a and 30b are formed by the gears 12f to 12f. It is arranged on the front and rear surfaces so as to sandwich 12h.

The details of the vertical movement mechanism 32 are shown in FIGS.
As shown in FIG. 6, a pair of guide plates 32a fixed to the front side of the case 26, a dovetail groove 32b provided on the opposite surfaces of the guide plate 32a, and a slide plate in which both ends are vertically movably fitted. 32c and a ball screw 32d provided on the back side of the slide plate 32c
And a motor 32e that rotationally drives the ball screw 32d.

The rotary shaft 22 is rotatably arranged at the center of the slide plate 32c so as to pass through the motor 32e.
When the slide plate 32c is driven to rotate,
Guided by b, move up and down. Slide plate 32c
When the gear moves up and down, the rotating shaft 22 moves up and down accordingly. At this time, since the gears 21d to 21f are connected by the link mechanism 30, the respective gears 21d to 21f.
The rotary drive motor 12 moves while maintaining the meshed state between
The rotational force of a can be smoothly transmitted to the rotary shaft 22.

In this case, the motor 32e is preferably a stepping motor whose rotation angle can be controlled with high precision. When such a motor is used, the vertical movement of the rotary shaft 22 can be controlled very finely. Front-rear drive mechanism 18
Is for moving the rotary shaft 22 back and forth along the longitudinal axis direction of the sewer pipe 10, and is movable back and forth in the guide portion 18a fixed to the base 28 and the dovetail groove 18b of the guide portion 18a. The fitted slide plate 18b and slide plate 1
Ball screw 18c coupled to 8b and ball screw 18c
And a motor 18d for rotating the motor.

On the slide plate 18b, the rotary drive mechanism 1
The rotary drive motor 12a of No. 2 and the drive motor 15d of the rocking drive mechanism 15 are placed, and the hollow cylindrical portion 15a of the rocking drive mechanism 15 is freely rotatable on the cylinder portion 18e provided on the front end side of the slide plate 18b. Supported by. Motor 18d
Are mounted and fixed substantially at the center of the base 28. The endoscope scope 20 is fixedly installed on the upper surface side of the case 26, and is installed substantially coaxially with the shaft 21c of the rotary drive mechanism 12.

The image pickup section on the distal end side of the endoscope 20 is
The cutting bit 24 is provided so as to face the lower surface side, is connected to a monitor (not shown), and the cleaning device is remotely operated while watching the image reproduced on the monitor to remove solid matters and the like by the cutting bit 24. . Further, the cleaning device of this embodiment is provided with a fixing mechanism 34 that fixes the base 28 at a predetermined position. The fixing mechanism 34 includes a plurality of rollers 34 a that are in contact with the upper surface of the inner circumference of the sewer pipe 10, and the rollers 34 a.
It has a support portion 34b, a leaf spring 34c that presses the support portion 34b toward the sewer pipe 10 side, and a link rod 34d.

The link rod 34d is formed by pin-joining a pair of rods in a substantially V-shape. The center of the link rod 34d is connected to the leaf spring 34c, one end is fixed to the base 28 side, and the other end is , A disk 3 that is driven to rotate by a motor 34e
It is eccentrically coupled to 4f. In the fixing mechanism 34 configured as described above, when the motor 34e is driven to rotate the disk 34f, the link rod 34e is eccentrically coupled to the disk 34f, so that the link rod 34e rotates with the rotation of the disk 34f. The coupling portion is pushed out forward, whereby the roller 34a is pressed against the inner peripheral upper surface side of the sewer pipe 10 via the leaf spring 34c, and the base 28 can be fixed.

Next, a method for cutting and removing solid matter such as solidified mortar adhering to the inner surface of the sewer pipe 10 by using the cleaning device having the above-mentioned structure will be described. The cleaning device is installed inside the sewer pipe 10, and the endoscope scope 20
It is controlled by remote control while watching the monitor connected to. When the presence of solid matter is recognized on the inner surface of the sewer pipe 10 by the endoscope 20, first, the traveling drive motor 14c of the traveling drive mechanism 14 is driven so that the cutting bit 24 is located near the solid matter. To move.

The fixing mechanism 3 is used for this movement.
The roller 34 a of No. 4 is separated from the inner surface of the sewer pipe 10. When the cutting bit 24 is located near the solid material, the motor 34e of the fixing mechanism 34 is driven to press the roller 34a against the inner surface of the sewer pipe 10 to fix the device at that position. Then, the motor 18d of the front-back drive 18,
The motor 32e of the movement drive mechanism 16 and the swing drive mechanism 15
Any one or all of the drive motors 15d in FIG. 3 are driven to finely adjust the cutting bit 24 so as to contact the solid matter. And this state is endoscope 2
When it is confirmed as 0, the rotary drive motor 12a of the rotary drive mechanism 12 is driven to rotate the cutting bit 24, while the drive motor d of the swing drive mechanism 15 is driven to drive the cutting bit 2
4 is swung along the inner peripheral surface of the sewer pipe 10 toward the solid matter, and the solid matter is scraped off by the cutting bit 24.

The solid material scraped off is carried out along the flow of the sewer pipe 10. At this time, the cutting depth of the solid matter by the cutting bit 24 is determined by the motor 34e of the movement drive mechanism 16.
It is also possible to adjust by driving and to solidify the solid matter to a large degree, and to remove the solid matter by reciprocating rocking movement a plurality of times. Instead of swinging the cutting bit 24, the cutting bit 24 may be rotated while being moved by the movement driving mechanism 16 so as to be separated from the center to remove the solid matter.

Now, according to the cleaning device constructed as described above, the cutting bit 24 attached to the rotary shaft 22.
Has an outer diameter smaller than the inner diameter of the sewer pipe 10, so that the cutting bit 24 is much less likely to obstruct the passage of the bent portion of the sewer pipe 10. Further, even if the end of the mounting pipe projects inside the sewer pipe 10, the rotary shaft 22 can be rocked by the rocking movement mechanism 15 and moved to a position where the cutting bit 24 does not interfere with the projected portion. it can.

Further, in the cleaning device of this embodiment, only the solidifying deposits can be removed from the inner peripheral surface of the sewer pipe 10, so that the efficiency is greatly improved as compared with the conventional device of this type. In the above embodiment, the cutting bit 24 is attached to the rotary shaft 22 to remove the solidifying deposit such as cement. However, in the device of the present invention, the cutting bit 2 is used.
If a brush or the like is attached to the rotary shaft 22 instead of 4, oil and fat components such as lard adhering to the inner surface of the sewer pipe 10 can be removed.

Further, the front-back drive mechanism 18 of the rotary shaft 22 shown in the above embodiment is not always necessary, and the traveling drive mechanism 14 can be substituted. Further, for example, when removing solids and oils and fats having a low degree of solidification, the cutting bits 24 or brushes can be removed by oscillating movement along the inner peripheral surface of the sewer pipe 10. Therefore, the movement drive mechanism 16 is not always necessary.

Further, the fixing mechanism 34 of the above-mentioned embodiment is provided to stably support the cutting bit 24 when the hard solid material having a large degree of solidification is removed by the cutting bit 24, but this mechanism is also provided. Not necessarily required.

[0032]

As described above in detail in the embodiments,
According to the underground buried pipe cleaning device of the present invention, it is possible to smoothly travel in a bent portion, and moreover, it is possible to efficiently remove only foreign matters such as deposits on the underground buried pipe.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a cleaning device according to the present invention.

FIG. 2 is a view as viewed in the direction of arrows AA in FIG. 1;

3 is an explanatory plan view of FIG. 1. FIG.

FIG. 4 is a view taken along the line BB of FIG.

FIG. 5 is a cross-sectional view of the main parts of the rotation drive mechanism of the cleaning device according to the present invention.

FIG. 6 is an explanatory view of a main part of a movement drive mechanism of the cleaning device according to the present invention.

7 is an explanatory plan view of FIG. 1. FIG.

FIG. 8 is a view on arrow D-D of FIG. 3.

FIG. 9 is a view taken along the arrow CC of FIG.

[Explanation of symbols]

 10 Sewage pipe 12 Rotational drive mechanism 12a Rotational drive motor 14 Traveling drive mechanism 14a Wheel 14c Traveling drive motor 15 Swinging drive mechanism 15a Hollow cylindrical part 15d Drive motor 16 Moving drive mechanism 18 Front-rear drive mechanism 18d Motor 20 Endoscope scope 22 Rotation Axis 24 Cutting bit 26 Case 30 Link mechanism 32 Vertical movement mechanism 32e Motor 34 Fixing mechanism

Claims (5)

[Claims] 1. An attachment removing device such as a cutting bit or a brush having an outer diameter smaller than the inner diameter of the underground burial pipe is rotatably installed at a position eccentric from the center of the underground burial pipe and is detachably attached. A buried underground pipe cleaning device comprising: a rotary shaft, a rotary drive mechanism that rotationally drives the rotary shaft, and a traveling drive mechanism that travels the rotary drive mechanism along a longitudinal direction of the buried pipe. The underground buried pipe cleaning device is characterized in that a swing drive mechanism for swinging the rotary shaft along the inner circumference of the underground buried pipe is provided. 2. The cleaning device according to claim 1, wherein a movement drive mechanism for moving the rotation shaft so as to separate or approach the rotation shaft from the center of the underground buried pipe, and the rotation shaft in the longitudinal direction of the underground buried pipe. An underground buried pipe cleaning device, comprising: a front-back drive mechanism for moving back and forth along a direction. 3. The cleaning device according to claim 1 or 2, further comprising: an endoscope scope that captures an image of the vicinity of the adhering matter removing instrument, wherein the drive mechanism remotely operates based on an image captured by the endoscope scope. Underground pipe cleaning device characterized by being operated. 4. The rotary drive mechanism includes a rotary drive motor installed substantially at the center of the underground pipe, and a plurality of gear trains meshing with each other. The underground buried pipe cleaning device according to any one of claims 1 to 3, wherein the rotary drive motor is mounted on a rotary shaft of the rotary drive motor, and the driving gear of the gear train is provided on the rotary shaft. 5. The movement drive mechanism includes a link mechanism that connects the rotation shafts of the gears of the gear train, and a vertical drive mechanism unit that moves the rotation shaft in the vertical direction. Item 4. The underground underground cleaning device according to item 4.