KR100755794B1 - Apparatus for removing scale sticked a pipe - Google Patents

Abstract

A pipe scale removing apparatus is provided to uniformly remove scale from an inner surface of a pipe while rotating a cylindrical cutter about a central axis thereof. A pipe scale removing apparatus includes a front body unit(100) mounted on a crawler vehicle(10); a rear body unit(200) equipped with rear wheels(20); a center body unit(300); and a cylindrical cutter(400). The center body unit is interposed between the front body unit and the rear body unit, and rotates about a first central axis thereof by a first motor(30) such that the center body unit rotates relatively to the front body unit and the rear body unit. The cylindrical cutter is mounted on the center body unit such that the cylindrical cutter is prevented from being affected by the rotation of the center body unit. The cylindrical cutter rotates centering by a second central axis thereof by a second motor(40).

Description

Conduit descaling device {APPARATUS FOR REMOVING SCALE STICKED A PIPE}

1 is a perspective view showing a conduit descaling device according to a first embodiment of the present invention;

2 is an exploded perspective view showing a conduit descaling device according to a first embodiment of the present invention;

3 is a cross-sectional view taken along line A-A of FIG. 1 illustrating the operation of a conduit descaling device according to the present invention for removing scales attached to conduits.

4 is a perspective view of the front body of FIG.

5 is a front view showing an example in which the conduit descaling device according to the present invention is supported by a leg device in close contact with the inner circumferential surface of the conduit;

6 is an exploded perspective view showing the center body portion of the conduit descaling apparatus according to the first embodiment of the present invention;

7 is a side view showing the cylindrical cutter of FIG.

8 is a perspective view showing a conduit descaling device according to a second embodiment of the present invention;

9 is a perspective view showing a conduit descaling device according to a third embodiment of the present invention;

10 is a cross-sectional view taken along the line B-B of FIG.

10 is a cross-sectional view showing a state in which three cylindrical cutters are mounted on a center body portion;

12 is a cross-sectional view taken along line C-C of FIG. 1 for explaining a conduit descaling apparatus according to a fourth embodiment of the present invention.

FIG. 13 is a cross-sectional view illustrating a state in which the crawler vehicle and the leg device of FIG. 12 are retracted into the front body part; FIG.

14 is a cross-sectional view taken along the line D-D of FIG. 1 for explaining a conduit descaling device according to a fourth embodiment of the present invention.

15 is a cross-sectional view illustrating a state in which the rear wheel and the leg device of FIG. 14 are retracted into the rear body part;

16 is a side view showing a conduit descaling apparatus according to a fifth embodiment of the present invention.

The present invention relates to a device for removing the scale attached to the inner surface of the conduit, such as water pipes, sewage pipes, industrial steel pipes or cast iron pipes, more specifically, while being slowly advanced by the tracked vehicle and the rear wheels of the rear body portion In addition, while the cylindrical cutter rotating by the center body portion is rotated about its central axis, and relates to a conduit scale removal device that can remove the entire scale evenly attached to the inner peripheral surface of the conduit.

Republic of Korea Patent No. 0177384 (registered November 17, 1998) is introduced to the "conduit obstacle removal device".

The obstacle removal device of the conduit includes a vehicle body equipped with wheels, a cutter installed in front of the vehicle body to advance and retract in the longitudinal direction of the vehicle body by the operation of a hydraulic cylinder installed in the vehicle body, and installed inside the vehicle body. A drive motor for rotating, a plurality of support legs provided at equal intervals on the circumference of the outer circumferential surface of the vehicle body, and a plurality of connected to the support legs, respectively, for independently advancing and supporting the support legs toward the car in the radial direction. Cylinders, a hydraulic cylinder for supplying hydraulic oil to the hydraulic cylinder and the cylinder, and a valve mechanism for opening and closing the hydraulic line.

However, the obstacle removal device of the conduit is not only able to uniformly scale the entire conduit inner surface in a batch, but also has to be replaced frequently due to severe abrasion of the edge of the cutter. Not only can be damaged by the cutter, there is a risk that the conduit can be broken by the cutter, if there is a lot of foreign matter in the sewage in the conduit has a disadvantage that the wheel is difficult to move forward.

Accordingly, an object of the present invention is to provide a conduit (water pipe) while the cylindrical cutter, which is orbiting by the center body, is rotated about its central axis, while being slowly advanced by the tracked vehicle and the rear wheel of the rear body. To provide a conduit descaling device capable of uniformly removing the scale attached to the inner peripheral surface of the sewage pipe, industrial steel pipe or cast iron pipe).

Another object of the present invention is a plurality of leg devices with wheels mounted to the front body portion is mounted at a predetermined interval, the movable cylinder portion of the leg device is elastically supported by a spring embedded in the fixed cylinder portion, The length of the cylindrical portion can be freely varied, to provide a conduit descaling device that can prevent the center of the center body portion from deviating from the center of the conduit.

Still another object of the present invention is that when the panel with the cylindrical cutter is elastically supported by a spring in the groove of the center body portion, when the conduit passes through an elliptical shape instead of a round shape, the inner circumferential surface of the conduit is contracted while the spring is contracted. It is to provide a conduit descaling device that can prevent the cylindrical cutter from being in close contact.

Another object of the present invention is to arrange two or more cylindrical cutters symmetrically in the center body portion, thereby preventing the occurrence of unbalanced load on the center body portion by the cylindrical cutter when the center body portion rotates about its central axis. It is possible to provide a conduit descaling device capable of increasing the rotational speed of the center body portion.

Still another object of the present invention is to incorporate hydraulic devices in the front body portion and the rear body portion, the tracked vehicle, the rear wheel and the leg device can be introduced / drawn into the front body portion and the rear body portion, respectively, to the entrance of the conduit This allows for convenient insertion of conduit descaling devices.

Still another object of the present invention is a cylindrical grinder or a cylinder wound with a sponge is rotatably mounted on the center body portion, a blower fan is mounted on the front body portion, and after removing the scale attached to the inner peripheral surface of the conduit with a rotary cutter, The present invention provides a conduit descaling device capable of smoothly polishing an inner circumferential surface of a conduit with a grinder and blowing dust by polishing with a blowing fan.

Conduit descaling apparatus according to the present invention for achieving the above object is disposed between the front body portion, the rear body portion is mounted on the rear wheel, and the front body portion and the rear body portion, It is rotated about its first central axis by a first motor, and is mounted to the center body part which rotates relative to the front body part and the rear body part, and is not affected by the rotation of the center body part. It is composed of a cylindrical cutter that rotates about its own second central axis by a second motor, and performs orbital motion by the center body part while advancing slowly by the endless track vehicle of the front body part and the rear wheel of the rear body part. As the cylindrical cutter rotates about its central axis, the scale attached to the inner circumferential surface of the conduit (water pipe, sewage pipe, industrial steel pipe or cast iron pipe) Features that can be uniformly removed to a volume.

In addition, the present invention is provided with a plurality of leg devices with wheels mounted on the outer circumferential surface of the front body portion at predetermined intervals, so that a plurality of leg devices with wheels are mounted on the front body portion at predetermined intervals, the legs Since the movable cylinder portion of the device is elastically supported by a spring embedded in the fixed cylinder portion, the length of the movable cylinder portion can be freely changed, so that the center of the center body portion can be prevented from deviating from the center of the conduit. do.

In addition, the present invention is formed with a groove for inserting the panel supporting the cylindrical cover in the cylindrical portion of the center body portion, the panel is elastically supported by a spring disposed in the groove, so that the conduit is not a round oval When passing through the deformed section, it is characterized in that the spring is contracted to prevent the cylindrical cutter from being in close contact with the inner circumferential surface of the conduit.

In addition, the present invention is characterized in that the front wheel can be mounted in place of the tracked vehicle in the front body portion.

In addition, the present invention is characterized in that two cylindrical cutters are arranged symmetrically or three cylindrical cutters are arranged at equal intervals in the center body portion.

In addition, the present invention is the hydraulic body is built in the front body portion and the rear body portion, respectively, the crawler vehicle and the leg device can be drawn in and out from the front body portion by the hydraulic device of the front body portion, the hydraulic device of the rear body portion It is characterized in that the rear wheel and the leg device can be pulled in and out from the rear body portion.

In addition, the present invention is a cylindrical grinding machine or a cylinder wound with a sponge is rotatably mounted, the blower fan is mounted to the front body portion, remove the scale attached to the inner peripheral surface of the conduit with a rotary cutter, and then The inner circumferential surface of the conduit can be smoothly polished, and dust can be blown out by the blowing fan.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

1 and 2, a conduit descaling apparatus according to a first embodiment of the present invention includes a front body portion 100 mounted on a crawler vehicle 10 and a rear body portion on which a rear wheel 20 is mounted. It is disposed between the 200 and the front body portion 100 and the rear body portion 200, the front body is rotated about its first central axis 310 by the first motor 30, A center body part 300 which rotates relative to the part 100 and the rear body part 200, and is mounted to the center body part 300 so as not to be affected by the rotation of the center body part 300. It consists of a cylindrical cutter 400 that rotates about its second central axis 410 (see FIG. 3) by the motor 40.

As a result, as shown in FIG. 3, the cylindrical cutter 400 is centered on the second central axis 410 during the orbital movement about the first central axis 310 of the center body 300. As it rotates, the scale (not shown) attached to the inner circumferential surface of the conduit 500 is uniformly removed as a whole. At this time, the conduit scale removing apparatus according to the present invention can be advanced by the crawler vehicle 10 of the front body portion 100 and the rear wheel 20 of the rear body portion 200 shown in FIG. The center body 300 is rotated about its first central axis 310 while the conduit descaling device is slowly advanced, and the cylindrical cutter 400 is rotated while the center body 300 is rotated. Rotates about its second central axis 410, thereby uniformly scaling the entire inner circumferential surface of the conduit 500.

Here, the conduit means a water pipe, sewage pipe, industrial steel pipe or cast iron pipe, etc., the scale includes not only the material attached to the inner surface of the conduit, but also the rust and aging paint material generated on the inner circumferential surface of the conduit.

The tracked vehicle 10 is already well known and thus a detailed description thereof will be omitted.

1 and 4, the front body portion 100 includes a power supply (not shown) capable of operating a driving motor (not shown) of the crawler vehicle 100, and is provided on an outer circumferential surface thereof. A plurality of leg devices 110 on which the wheels 111 are mounted are mounted at predetermined intervals.

The leg device 110 is fixed to the lower mounting portion 111 by a fastening bolt (not shown) after being fitted in a sliding manner to the mounting bracket 120 of the front body portion 100, the lower mounting portion 111 The fixed cylindrical portion 113 is fixed to the movable cylinder portion 114, and the movable cylindrical portion 114 is elastically supported by a spring (not shown) built in the fixed cylindrical portion 113, whereby the movable cylindrical portion 114 is fixed. The length is freely variable in the state mounted to the cylindrical part 113.

As a result, as shown in FIG. 5, the wheel 111 of the leg device 110 is brought into close contact with the inner circumferential surface of the conduit, so that the cylindrical cutter 400 removes the scale attached to the inner circumferential surface of the conduit. The center of the body portion 300 prevents the deviation from the center of the conduit 500.

Referring back to FIGS. 1 and 2, the rear body part 200 is provided with a plurality of leg devices 210 mounted on wheels at outer intervals at predetermined intervals.

The leg device 210 has the same configuration as the leg device 110 of the front body portion 100.

Referring to FIG. 6, the center body part 300 is equipped with stoppers 331 and 335 sealing both ends of the cylindrical part 320, and shaft holes 332 and 336 in the stopper plates 331 and 335. ) Is formed, and the first central shaft 310 inserted into the shaft holes 332 and 336 is joined to the stopper plates 331 and 335, so that the rotational power of the first central shaft 310 is cylindrical. And a groove 340 to be inserted into the panel 420 for supporting the cylindrical cover 320, and as shown in FIG. 3, in the spring 430 disposed in the groove 340. As a result, the panel 420 is elastically supported, and the panel 420 is prevented from being separated from the groove 340 by the stopper protrusion 341 formed at the upper end of the groove 340.

As a result, as shown in FIG. 3, when the cylindrical cutter 400 passes through the section in which the conduit is deformed into an ellipse rather than a round shape in the process of removing the scale attached to the inner circumferential surface of the conduit 500 as a whole, the spring As the 430 is contracted, the panel 420 is moved to the center of the center body 300, so that the cylindrical cutter 400 is in close contact with the inner circumferential surface of the conduit 500 so that the cylindrical cutter 400 is overloaded or the conduit The inner circumferential surface of 500 can be prevented from being cut by the cylindrical cutter 400.

6 and 7, both ends of the cylindrical cutter 400 are supported by bearings 441 and 442 mounted to the panel 420, and one end thereof is directly connected to the third motor 40. Tapered so as to become larger in diameter toward the left side, the diameter d2 of the left end (as shown in FIG. 7) is larger than the diameter d1 of the right end (as shown in FIG. 7), and the left pedestal 441; 7, the steel ball 450 is mounted on the upper end of the steel ball 450, and the steel ball 450 is disposed at the same height as the upper end of the left end of the cylindrical cutter 400.

Thereby, when removing the scale attached to the inner circumferential surface of the conduit, there is an effect that can use the entire left and right sides of the blade mounted on the cylindrical cutter 400 evenly, and the steel ball 450 on the upper end of the left pedestal 441 The left end of the cylindrical cutter 400 can be prevented from excessively cutting the inner peripheral surface of the conduit.

Referring again to FIG. 2, the conduit descaling apparatus according to the present invention further includes a power cable (not shown) embedded in the hollow portion 311 of the first central axis 310 of the first central axis 310. It is connected to the connection terminal 312 mounted at one end, the connection terminal 312 is coupled to the connection terminal (not shown) built in the front body portion 100, it is built in the front body portion 100 Power may be supplied to a drive motor (not shown) of the crawler vehicle 10, and the connection terminal 334 formed in an annular shape on one end plate 331 of the center body part 300 may have a front body part 100. It is coupled to a connection terminal (not shown) mounted on the corresponding surface of the), power can be supplied to the third motor 40 of the cylindrical cutter 400 through the front body portion (100).

Conduit scale removal apparatus according to the first embodiment of the present invention configured as described above is the conduit 500 by the tracked vehicle 10 of the front body portion 100 and the rear wheels 20 of the rear body portion 200 While slowly advancing along, the cylindrical cutter 400, which is orbiting about the first central axis 310 of the center body part 300, rotates about its second central axis 410, and the conduit The scale attached to the inner circumferential surface of 500 is entirely removed. At this time, the wheels of the leg devices 110 and 210 mounted on the front body part 100 and the rear body part 200 are in close contact with the inner circumferential surface of the conduit, so that the center of the center body part 300 is the center of the conduit 500. To prevent you from falling out. In addition, when the conduit descaling apparatus according to the present invention passes through the section in which the conduit 500 is deformed into an elliptical shape instead of a round shape, the panel 420 moves toward the center of the center body part 300 while the spring 430 is contracted. By being pressed, the cylindrical cutter 400 is in close contact with the inner circumferential surface of the conduit 500, thereby preventing the cylindrical cutter 400 from being overloaded or being cut into the inner circumferential surface of the conduit by the cylindrical cutter.

Referring to FIG. 8, the conduit scale removing apparatus according to the second embodiment of the present invention includes a front body portion 100 on which the front wheels 15 are mounted, a rear body portion 200 on which the rear wheels 20 are mounted, It is disposed between the front body portion 100 and the rear body portion 200, and is rotated about its first central axis 310 by the first motor 30, and the front body portion 100 and The center body 300 is rotated relative to the rear body 200, and is mounted to the center body 300 so as not to be affected by the rotation of the center body 300, and thus, the second motor 40. It consists of a cylindrical cutter 400 that rotates about its second central axis (410).

In the description of the second embodiment of the present invention, the same reference numerals are used for the same components as the first embodiment.

The conduit descaling device according to the second embodiment of the present invention is a modification of the conduit descaling device according to the first embodiment of the present invention. Instead of the caterpillar vehicle of the first embodiment, the front wheel is removed from the front body portion 100. It is the same as the first embodiment except that it is applied, and is cheaper than the conduit descaling apparatus according to the first embodiment, and can be applied when the movement of the conduit descaling apparatus according to the present invention in the conduit is not greatly restricted. .

9 to 11, in the conduit descaling apparatus according to the third embodiment of the present invention, as shown in FIGS. 9 and 10, two cylindrical cutters 400 are formed in the center body 200. 11 are arranged symmetrically with each other, or as shown in FIG. 11, the same as the conduit descaling apparatus according to the first embodiment except that the three cylindrical cutters 400 are arranged at equal intervals in the center body portion 200. Do.

In the conduit descaling apparatus according to the third embodiment of the present invention, when the center body part 200 is rotated about its first central axis 310, the cylindrical cutter 400 is attached to the center body part 200. Substituted or three cylindrical cutters are arranged at equal intervals so that the center body 200 is not subjected to unbalanced load, the rotational speed of the center body 200 than the rotational speed of the center body portion according to the first embodiment It can be maintained high, there is an advantage that can increase the cutting speed of the scale attached to the inner peripheral surface of the conduit by two to three cylindrical cutters.

1 and 12 to 15, Figures 12 and 13 is a cross-sectional view showing a front body of the conduit descaling apparatus according to a fourth embodiment of the present invention, Figure 12 is a tracked vehicle in the front body portion And the leg apparatus is drawn out, and FIG. 13 is a state in which the endless track vehicle and the leg apparatus are drawn in the front body portion. 14 and 15 show a state in which the rear wheel and the leg device are drawn out, and in FIG. 15, the rear wheel and the leg device are drawn in the rear body part.

In the conduit descaling device according to the fourth embodiment of the present invention, a hydraulic device 610 (shown schematically in FIGS. 12 and 13) is built into the front body part 100, and thus the first of the hydraulic device 610 is provided. By the hydraulic cylinder 612, the tracked vehicle 10 of the front body portion 100 is not only drawn into and out of the groove 130 formed in the front body portion 100, but also inserted into the front body portion 100. Leg device 110 can be drawn in and out by the two hydraulic cylinder 614, and as shown in Figure 14 and 15, the hydraulic device 620 is built in the rear body portion 200, the hydraulic device Not only the rear wheel 20 can be drawn in and out of the groove 230 formed in the rear body 200 by the third hydraulic cylinder 622 of 620, but also the fourth body inserted into the rear body 200. Conduit descaling according to the first embodiment of the present invention except that the leg device 210 can be pulled in and out of the cylinder 624. It is equal to the value.

When inserting the conduit scale removing device according to the fourth embodiment of the present invention configured as described above into the inlet of the conduit such as sewage pipe, as shown in Figure 13, the front body portion 100 by the hydraulic device 610 As well as the tracked vehicle 10 and the leg device 110 is retracted, as shown in Figure 15, the rear wheel 20 and the leg device to the rear body portion 200 by the hydraulic device 620 210 can be maintained in the retracted state, which is convenient for the operator to put the conduit descaling device according to the invention into the inlet of the conduit.

In addition, after the conduit scale removing apparatus according to the present invention is inserted into the conduit, when the hydraulic system 610 of the front body portion 100 and the hydraulic system 620 of the rear body portion 200 are operated, the front body portion ( The tracked vehicle 10 is withdrawn from the groove 130 of the 100 by the first hydraulic cylinder 612, the leg device 110 is withdrawn from the second hydraulic cylinder 614, and at the same time the rear body portion 200 The rear wheel 20 is pulled out by the third hydraulic cylinder 622 from the groove 230 of), and the leg device 210 is pulled out from the fourth hydraulic cylinder 624, so that the crawler vehicle 10 and the rear wheel are pulled out. 20 and the wheels of the leg devices 110, 210 are in close contact with the inner circumferential surface of the conduit 500, so that the center body portion is automatically disposed at the center of the conduit.

As described above, in the conduit scale removing apparatus according to the fourth embodiment of the present invention, the caterpillar 10, the rear wheel 20, and the leg devices 110 and 210 are connected to the front body portion by the hydraulic devices 610 and 620. 100) and since the volume is reduced by being introduced into the rear body portion 200, there is an advantage that the operator can conveniently introduce the conduit descaling device according to the present invention to the inlet of the conduit.

Referring to FIG. 16, the conduit descaling apparatus according to the fifth embodiment of the present invention is mounted to the center body 300 so that a cylindrical grinder 700 (including a cylindrical abrasive brush) may be rotated instead of the cylindrical cutter. It is the same as the conduit scale removing apparatus according to the first embodiment of the present invention except that the blower 800 is mounted on the front body portion 100.

The conduit descaling apparatus according to the fifth embodiment of the present invention removes the scale attached to the inner circumferential surface of the conduit by using the conduit descaling apparatus according to the first embodiment of the present invention, and is attached to the center body part 300. The rotary cutter may be replaced with a cylindrical grinder 700 to smoothly polish the inner circumferential surface of the rough conduit. At this time, it is preferable that the conduit descaling apparatus according to the fifth embodiment of the present invention is advanced in the direction of the arrow 750 shown in FIG. 16, and the blower 800 removes the conduit scales according to the fifth embodiment of the present invention. The dust falling off the inner circumferential surface of the conduit in the forward direction of the device is blown out.

The conduit descaling apparatus according to the fifth embodiment of the present invention can replace the cylindrical grinder mounted on the center body portion with a cylinder (not shown) wound with a sponge (or a thick cloth capable of absorbing moisture).

As described above, according to the present invention, after the polishing operation is completed, the inner cylinder surface of the conduit can be wiped clean by attaching a sponge wound cylinder to the center body portion.

As described above, the conduit descaling device according to the present invention is centered on its central axis while the cylindrical cutter is orbiting by the center body part while being slowly advanced by the tracked vehicle of the front body part and the rear wheel of the rear body part. Rotates to remove the scale attached to the inner circumferential surface of the conduit as a whole, and the movable cylinder portion of the leg device is elastically supported by a spring embedded in the fixed cylinder portion, so that the center of the center body portion is out of the center of the conduit. The cylindrical cutter is elastically mounted on the center body portion, and when the conduit passes through an elliptical shape instead of a round shape, the cylindrical cutter adheres excessively to the inner circumferential surface of the conduit so that the cylindrical cutter Receiving or the inner circumferential surface of the conduit is effective to prevent being cut by the cylindrical cutter.

In addition, the conduit descaling apparatus according to the present invention, since the two or more cylindrical cutters are arranged symmetrically in the center body portion, when the center body portion rotates about its central axis, the load on the center body portion is reduced by the cylindrical cutter. It is possible to prevent the occurrence, and built-in hydraulic device in the front body portion and the rear body portion, the tracked vehicle, the rear wheel and the leg device can be drawn in / out of the front body portion and the rear body portion, respectively, to the entrance of the conduit The effect is that the conduit descaling device can be conveniently placed.

In addition, the present invention has the effect of increasing the use efficiency of the conduit scale removal device by replacing the rotary cutter with a cylindrical grinding machine or a sponge wound cylinder.

Claims (12)

It is disposed between the front body portion 100 mounted on the crawler vehicle 10, the rear body portion 200 on which the rear wheels 20 are mounted, and the front body portion 100 and the rear body portion 200. The center body 300 is rotated relative to the front body portion 100 and the rear body portion 200 by being rotated about its first central axis 310 by the first motor 30. The cylindrical cutter is mounted on the center body 300 so as not to be affected by the rotation of the center body 300, and rotates about its own second central axis 410 by the second motor 40 ( Conduit descaling device, characterized in that consisting of (400). The method of claim 1, The front body portion 100 has a built-in power supply for operating the drive motor of the crawler vehicle 100, a plurality of legs device 110 is mounted on the outer circumferential surface at predetermined intervals A conduit descaling device, characterized in that it is mounted. The method of claim 2, The leg device 110, the lower mounting portion 111 is fitted in a sliding manner to the mounting bracket 120 of the front body portion 100, is fixed by a tightening bolt, the fixed cylindrical portion to the lower mounting portion 111 The 113 is fixed and the movable cylindrical part 114 is elastically supported by the spring built in the fixed cylindrical part 113, so that the movable cylindrical part 114 is attached to the fixed cylindrical part 113. Conduit descaling device, characterized in that the length is freely variable. The method of claim 1, The center body 300 is provided with stoppers 331 and 335 sealing both ends of the cylindrical part 320, and shaft holes 332 and 336 are formed in the stopper plates 331 and 335. Since the first central shaft 310 inserted into the shaft holes 332 and 336 is joined to the stopper plates 331 and 335, the rotational power of the first central shaft 310 is transmitted to the cylindrical portion 320, and the cylinder A groove 340 is formed to fit the panel 420 supporting the cover 320, and the panel 420 is elastically supported by the spring 430 disposed in the groove 340. A conduit scale removing apparatus, characterized in that the panel 420 is prevented from being separated from the groove 340 by a stopper protrusion 341 formed at an upper end of the groove 340. The method according to claim 1 or 4, Both ends of the cylindrical cutter 400 are supported by the bearings 441 and 442 mounted to the panel 420, one end is directly connected to the third motor 40, and the taper is increased in diameter from right to left. It is formed so that the diameter (d2) of the left end is larger than the diameter (d1) of the right end, the steel ball 450 is mounted on the upper end of the left pedestal 441, the steel ball 450 is the left side of the cylindrical cutter 400 A conduit descaling device, characterized in that it is disposed at the same height as the top of the stage. It is disposed between the front body portion 100 on which the front wheel 15 is mounted, the rear body portion 200 on which the rear wheel 20 is mounted, and between the front body portion 100 and the rear body portion 200, and The center body 300 is rotated relative to the front body portion 100 and the rear body portion 200 by being rotated about its first central axis 310 by the first motor 30, and Cylindrical cutter 400 mounted on the center body 300 so as not to be affected by the rotation of the center body 300, rotated about its own second central axis 410 by the second motor 40 Conduit descaling device, characterized in that consisting of. It is disposed between the front body portion 100 mounted on the crawler vehicle 10, the rear body portion 200 on which the rear wheels 20 are mounted, and the front body portion 100 and the rear body portion 200. The center body 300 is rotated relative to the front body portion 100 and the rear body portion 200 by being rotated about its first central axis 310 by the first motor 30. The cylindrical cutter is mounted on the center body 300 so as not to be affected by the rotation of the center body 300, and rotates about its own second central axis 410 by the second motor 40 ( 400), Conduit scale removal device, characterized in that the two cylindrical cutters 400 are arranged symmetrically to each other in the center body portion (200). It is disposed between the front body portion 100 mounted on the crawler vehicle 10, the rear body portion 200 on which the rear wheels 20 are mounted, and the front body portion 100 and the rear body portion 200. The center body 300 is rotated relative to the front body portion 100 and the rear body portion 200 by being rotated about its first central axis 310 by the first motor 30. The cylindrical cutter is mounted on the center body 300 so as not to be affected by the rotation of the center body 300, and rotates about its own second central axis 410 by the second motor 40 ( 400), Conduit scale removal device, characterized in that the three cylindrical cutters 400 in the center body portion 200 are arranged at equal intervals in the center body portion 200. It is disposed between the front body portion 100 mounted on the crawler vehicle 10, the rear body portion 200 on which the rear wheels 20 are mounted, and the front body portion 100 and the rear body portion 200. The center body 300 is rotated relative to the front body portion 100 and the rear body portion 200 by being rotated about its first central axis 310 by the first motor 30. The cylindrical cutter is mounted on the center body 300 so as not to be affected by the rotation of the center body 300, and rotates about its own second central axis 410 by the second motor 40 ( 400), The hydraulic device 610 is built into the front body part 100, and the caterpillar vehicle 10 of the front body part 100 is connected to the front body part by the first hydraulic cylinder 612 of the hydraulic device 610. Conduit scale, characterized in that the leg device 110 can be drawn in and out with the second hydraulic cylinder 614 inserted into the front body portion 100 as well as drawn in and out of the groove 130 formed in the 100. Removal device. The method of claim 9, A hydraulic device 620 is built in the rear body part 200, and the rear wheel 20 is formed by a groove 230 formed in the rear body part 200 by the third hydraulic cylinder 622 of the hydraulic device 620. Conduit descaling device, characterized in that the leg device 210 can be drawn in and out with the fourth cylinder 624 inserted into the rear body portion 200 as well as being able to be drawn in and drawn out. It is disposed between the front body portion 100 mounted on the crawler vehicle 10, the rear body portion 200 on which the rear wheels 20 are mounted, and the front body portion 100 and the rear body portion 200. The center body 300 is rotated relative to the front body portion 100 and the rear body portion 200 by being rotated about its first central axis 310 by the first motor 30. Conduit scale removal device, characterized in that consisting of a cylindrical grinder (700) rotatably mounted to the center body portion 300, and a blower (800) in the front body portion (100). It is disposed between the front body portion 100 mounted on the crawler vehicle 10, the rear body portion 200 on which the rear wheels 20 are mounted, and the front body portion 100 and the rear body portion 200. The center body 300 is rotated relative to the front body portion 100 and the rear body portion 200 by being rotated about its first central axis 310 by the first motor 30. Conduit descaling apparatus, characterized in that consisting of a cylinder (300) wound rotatably mounted to the center body portion 300, and a blower (800) in the front body portion (100).

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