KR20090025881A - An apparatus for removing coal tar on the inner surface of the superannuated pipe - Google Patents

Abstract

A coal tar removing device of aged conduit is provided to remove the coal tar by drawing a cutting line on a coal tar layer coated the aged conduit to the columnar direction with a disk cutter. A coal tar removing device of aged conduit comprises: a main body(2) moving backward and forward in the inner surface of the aged conduit; a driving mobile tool(4) moving on the uneven surface formed with the scale of the inner surface of conduit; a rotating member(6) installed in the leading end of the main body, and rotated with the external power supply; and a coal tar cutting tool(8) installed in a central axis of the rotating member to the radial direction.

Description

An apparatus for removing coal tar on the inner surface of the superannuated pipe}

The present invention relates to an apparatus for removing coal tar in an old pipeline that can effectively remove coal tar applied to the inner surface of the obsolete pipeline, and more specifically, forward and backward movements are possible by using a motor power. The present invention relates to a coal tar removing device of an old pipeline that can effectively remove coal tar by drawing a cutting line in a circumferential direction on a coal tar layer applied to an aged pipeline.

In general, cast iron pipes, which are mainly used in medium and large diameter water pipes for supplying tap water, oil pipes for transferring various fluids such as oil, gas pipes, and sewer pipes for transferring sewage (hereinafter, collectively referred to as 'pipe lines'). The aging causes corrosion as it is used for a long time, and a solid scale layer is formed on the inner wall of the pipe.

The scale layer generated on the inner surface of the fluid pipeline has a problem in that the fluid pressure is lowered by preventing the smooth flow of the fluid. In addition, the scale layer attached to the conduit dissolves in the fluid and contaminates the fluid, causing serious problems in maintaining the function of the conduit network as well as increasing the energy consumption. Should be cleaned.

If corrosion products are deepened on the inner surface of the pipe or if the pipe is likely to be damaged due to aging, improvement of the old pipe (replacement or rehabilitation) is carried out.The old pipe rehabilitation method applied to the pipe improvement work includes customs ( Cleaning) and lining are representative.

A conventional method for regenerating an old pipeline will be briefly described with reference to FIG.

As shown in the figure, a first step (S1) for inspecting the inside of the pipeline; Cut and open after cutting with the length of the old pipe about 60 ~ 80m in one section, and repeatedly pull out the tubing device such as scraper, wire brush, high pressure spray cleaner, etc. several times with the power winch A second step (S2) of removing and draining out of the pipe; A third step (S3) of removing the water accumulated in the tube and transferring the air into the tube by a blower to dry the blower; A fourth step (S4) of performing lining by inserting a hose having an injection head into the tube when the surface inside the tube is dried, and then spraying an epoxy resin paint or polyurea onto the inner surface of the tube through the spray head; And when the epoxy paint or polyurea is completely cured and consists of a fifth step (S5) to clean the inside of the pipe after connecting the pipe incision to pass through and fill the soil according to the regulations to complete the rehabilitation work.

In the above process, the customs method applied to the rehabilitation method by the aging pipe is proposed by a combination of a scraper method for dredging the sewage by dragging the device and a water jet method using high pressure water. Although it is difficult to obtain a clean pipe surface, there was a problem that takes a long time.

In particular, there is a pipe coated with coal tar enamel as a rust inhibitor to prevent corrosion of the inner surface of the old water pipe, but the coal tar enamel is hardened in spite of being harmful to the human body, so it is not removed by the conventional customs method. There was a problem.

Therefore, the present invention has been proposed to solve the above problems, it is possible to move forward and backward using the motor power, and smoothly to the irregular surface of the irregularly generated scale inside the old pipe by applying the endless track method The purpose of the present invention is to provide a coal tar removing device for the old pipe furnace which can effectively remove the coal tar layer applied as a rust preventive agent on the inner surface of the old pipe furnace by detachably forming the coal tar cutting device at the front end portion.

In addition, another object of the present invention is to provide a descaling apparatus for an old pipe furnace that can greatly reduce the customs time by removing a scale having a maximum width allowed by one rotation by sequentially separating a plurality of scale removing bits.

The present invention in order to achieve the above object, the main body to move back and forth straight from the inner surface of the old pipe; A moving unit having one side fixed to an outer circumferential surface of the main body at a predetermined angle, and the other side having a buffer unit configured to expand and contract in response to the pressing pressure to travel the uneven surface by the scale of the inner surface of the pipeline; Rotating means is installed at the front end of the main body, and rotated by a power supplied from the outside; And a coal tar cutting means installed radially on the central axis of the rotating means and drawing a cutting line on the coal tar layer applied to the old pipeline surface while rotating in a state in which the end portion is in contact with the pipeline surface at a constant pressure. It provides a coal tar removal device to the old pipe.

According to the present invention having the above characteristics, the main body capable of moving forward and backward in a self-propelled manner can smoothly move the uneven surface of the irregularly grown scale on the inner surface of the pipe by the caterpillar structure, and also use the disc cutter located at the intersection with each other. Thus, by cutting off the cut line in the circumferential direction on the coal tar layer applied as a rust preventive agent on the surface of the old pipeline, the coal tar can be removed efficiently and efficiently.

In addition, the present invention provides a hot air to the coal tar layer is solidified, there is another effect that can easily remove the coal tar layer by scraping the coal tar layer in a gel state using a scraper received the rotational power of the motor. In particular, it is possible to reduce the customs time by installing the bit intervals of the scraper in sequence sequentially so as to scrape the pipe surface of the maximum width allowable in one rotation.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings of FIGS. 2 to 21.

The old pipe scale removing device according to the present invention is mainly applied to medium and large pipes and effectively removes the coal tar enamel (hereinafter referred to as 'coal tar') applied to the surface of the pipeline as an anticorrosive agent, and utilizes the infinitely orbit and the power of the motor. Therefore, the irregular concave-convex surface of the old pipe can be smoothly moved forward and backward.

The coal tar removing apparatus of the old pipe according to the first embodiment of the present invention, as shown in Figures 2 to 4, the hollow body 2; Moving means (4) disposed on the circumferential surface of the main body (2) at intervals of 120 [deg.] To move the main body independently; A rotating device (6) mounted on the front end of the main body (2) as an axis and providing rotational force to a coal tar removing device to be described later; A coal tar cutting device (8) detachably installed on the main body (2) and removing the coal tar layer applied to the inner surface of the old pipe passage (200) while being rotated by the power of the rotating device (6); And a camera 10 mounted on an outer surface of the main body 2 and photographing a removal state of coal tar.

The moving means 4 has a fixed support ring 12 which is fitted to one side of the outer peripheral surface of the main body (2); A moving support ring 13 inserted into the fixed support ring 12 at a predetermined interval and moving along an outer surface of the main body 2 during the stretching movement; Intersected in the X-shape about the hinge 14a and connected to the fixed support ring 12 and the movable support ring 13, and projections 14b are provided on the side surfaces of the end portions, and corresponding to the pressing pressure. A cross link 14 for buffering driving about the hinge 14a; Each end of the cross link 14 is fitted, and when the cross link 14 is opened and narrowed, the first bracket 15 having a long hole 15a formed on the side for accommodating the moving section of the protrusion 14b. )and; A caterpillar (16) installed on the first bracket (15) and traveling in forward and backward directions in contact with an inner surface of the pipe; And a first deceleration motor 17 installed at one end of the caterpillar 16 to provide a front and rear rotational force thereto. It is fitted to the outer surface of one side of the main body 2, and includes a first tension spring 18 to provide a restoring force according to the sliding of the support ring (13).

The caterpillar 16 in this embodiment is provided so that not only traveling of a coal tar layer but also smoothly traveling the uneven surface by the scale layer which grew on the pipeline surface.

The rotating device 6 includes a second bracket 21 installed at the tip of the main body 2; A second reduction motor (22) fixed to the second bracket (21) and having a motive gear (23); It includes a driven gear 24 that is engaged with the motive gear 23 of the reduction motor 22 to transmit the rotational force.

The coal tar cutting device (8) is inserted through the driven gear (24) to be detachably fitted to the front end hollow portion of the main body (2), the rotary body 31 is rotated by receiving the rotational force of the driven gear (24) and ; A first support (32) having a (+) shape provided at the tip of the rotating body (31); A first absorber (33) extending from the circumferential surface of the first support (32) in a radial direction at an interval of 90 °, for driving at a predetermined pressure toward the inner surface of the conduit while driving bufferedly; A pair of third brackets 34 extending from the distal end of the first absorber 33; A plurality of first disk cutters 35 supported by the third bracket 34 and drawing cutting lines on the coal tar layer while rotating along the circumferential surface of the pipe; An x-shaped second support (36) provided on the central axis of the main body (2) of the rear side of the first support (32); A second absorber (37) extending at radial intervals from the circumferential surface of the second support (36) at equal intervals in the radial direction and buffered to pressurize at a constant pressure toward the inner surface of the conduit; A pair of fourth brackets 38 extending from the distal end of the second absorber 37; And a second disk supported by the fourth bracket 38 and rotating along the circumferential surface of the conduit, drawing a cutting line in the same direction as the cutting line formed by the first disk cutter 35 to peel off the coal tar layer. And a cutter 39.

In the above configuration, as shown in Fig. 5, the center distance between the first support 32 and the second support 36 is spaced by " t ". Therefore, when the first disk cutter 35 is advanced while drawing two or three cutting lines in the circumferential direction according to the rotation of the first support 32, the second disk cutter (according to the rotation of the second support 36) Since 39) again cuts fine lines, the coal tar layer can be peeled off.

In the first embodiment of the present invention, the blades of the first and second disk cutters 35 and 39 may be made of high-strength carbon steel such as artificial diamond or spring steel, and may be made of at least S45C or more carbon steel material.

The first absorber (33) comprises: four first cylinders (33a) extending radially from each of the first supports (32, 36); And a second cylinder 33b provided in the first cylinder 33a and being buffered up and down depending on whether the disk cutter 35 is pressed.

In the present invention, the structures of the first and second absorbers 33 and 37 may be classified into single-acting absorbers or double-acting absorbers depending on the driving method. In addition, according to the driving fluid, a hydraulic method driven by hydraulic pressure, a gas method driven by gas, a spring method using spring force, and the like may be adopted. Since such a structure is a general known technology, a detailed description thereof will be omitted.

 Similarly, since the structure of the second absorber 37 is the same as that of the first absorber 33, detailed description thereof will be omitted.

The plurality of first and second disk cutters 35 and 39 have blades located toward the circumferential surface of the conduit. Therefore, when the first and second supports 32 and 36 are rotated, the blades are rotated while being inserted to the coating depth of the coal tar layer by the pressure driving of the first and second absorbers 33 and 37. A plurality of cutting lines are drawn in the circumferential direction.

The first and second disk cutters 35 and 39 may be further equipped with a blower 40 for peeling coal tar fragments scattered on the inner surface of the pipe in the forward direction.

Hereinafter, only the blower 40 provided in the 1st disc cutter 35 is demonstrated.

As shown in FIG. 4, the blower 40 is provided on a central axis of the rotating body 31, and a distribution plate 41 which generates and distributes blown air; An air shaft 42 installed in the third bracket 34 in the axial direction, and having a hollow hole 42a formed in the axial direction, and a branched hole penetrating radially from the hollow hole 42a; The plurality of first disk cutters 35 are installed at predetermined intervals on the circumferential surface of the air shaft 42 so that the plurality of first disk cutters 35 are individually spaced apart from each other. An auxiliary bracket 44 on which an air ejecting port 44a for ejecting is formed; A bolt 45 for fixing through the auxiliary bracket 44 and the first disc cutter 35; One end is connected to the distribution plate 41, the other end is connected to the air shaft 42 includes an air line 46 to provide a supply path of air.

In particular, since the blades of the first and second disk cutters 35 and 39 are formed in an uneven shape, the coal tar can be separated from the old pipe line 200 only by drawing a cutting line to the circumferential surface of the old pipe line 200. It is.

The coal tar cutting device 8 configured as described above, as shown in Figure 5, while the first and second disk cutters 35, 39 are rotated to draw a cutting line densely in the circumferential direction of the old pipeline 200 In this process, the coal tar is peeled off.

The working state of the present invention configured as described above will be described.

In the following, the action of removing the coal tar layer applied to the surface of the old pipe passage will be described.However, when a water jet or a sanding device is mounted in place of the coal tar cutting device at the tip of the main body, the scale layer which is irregularly grown on the inner surface of the old pipe passage is removed. It is well known that the case can be applied.

According to the present invention, after removing the coal tar layer, the inside of the pipeline 200 is inspected before performing the customs process, and the coal tar removing apparatus of the present invention is introduced into the pipeline inner surface.

When the main gear unit 2 is inserted into the conduit 200, when the first reduction motor 17 is driven to provide rotational force, the caterpillar 16 which has been in contact with the inner surface of the conduit 200 is advanced. Then, the camera 10 is driven to irradiate the front of the conduit 200. The moving means 4 is composed of the caterpillar 16 is to be able to smoothly ride over the uneven surface of the scale irregularly grown on the inner surface of the pipeline 200.

In the process of moving the caterpillar 16 along the surface of the pipeline 200, the portion of the tube diameter is reduced when the passage is deformed into a non-garden due to earth pressure (a part of the diameter of the pipeline) and an enlarged portion (pipe) Caterpillar 16 of the moving means 4 is in contact with the long diameter portion of). When the caterpillar 16 in contact with the only part of the conduit is pressed, the X-shaped spacing of the cross link 14 is reduced about the hinge 14a and the movable support ring 13 is the first tension spring 18. ) Is pushed back while winning the resilience. At this time, since the fixed support ring 12 is fixed, only the movable support ring 13 is pushed back.

As the main body 2 moves, the second reduction motor 22 is rotated by receiving power from the outside. The rotation of the second reduction motor 22 is driven through the motive gear 23 and the driven gear 24. It is transmitted to the rotating body 31. As the rotary body 31 rotates, the distribution plate 41 and the coal tar cutting device 8 connected thereto are rotated.

When the coal tar cutting device 8 rotates, blowing air is provided to each of the first and second disk cutters 35 and 39 through the distribution plate 41. Then, by the operation of the first absorber 33, the blade of the first disk cutter 35 is deeply dug into the coal tar layer to rotate to draw a cutting line in the circumferential direction of the pipe. Subsequently, by operating the second absorber 37, the blade of the second disc cutter 39 rotates while digging deep into the coal tar layer, thereby peeling coal tar from the pipeline surface while drawing a cutting line in the circumferential direction of the pipeline.

The coal tar flakes peeled from the conduit surface are transferred and removed in the moving direction of the main body 2 by the blower 40.

When the coal tar layer is peeled off and removed, a polishing tool is attached in place of the coal tar cutting device 8 in a subsequent operation to smoothly polish the conduit surface to finish the customs work.

6 and 7, the same reference numerals are used for the same components as those of the first embodiment.

As shown in the figure, in the present embodiment, instead of the second disc cutter 39, the wheel 46, which is in close contact with the conduit surface and rolls, is mounted on the fourth bracket 38. As shown in FIG. And, the fourth bracket 38 is provided with a grid-shaped auxiliary bracket 47, the auxiliary bracket 47 is a known air hammer to remove by applying a continuous blow to the coal tar layer by air pressure. Is embedded in a case 49 having a hollow groove.

As shown in FIG. 7, the air hammer 48 is installed at an outer side of a throttle body 51 and a nipple 52 for connecting to an external air hose; A lever 53 installed at a side of the throttle body 51 to selectively discharge air; A piston (54) embedded in the throttle body (51); A cylinder 55 into which the piston 54 is fitted; Square groove is formed in one side, the chisel support 56 is fitted to the cylinder 55; A sleeve 57 inserted outside the cylinder 55 to prevent the chisel support 56 from being separated; A spring 58 installed in the sleeve 57 and cushioning when the piston continuously reciprocates by air pressure; And one side is fitted into the square groove of the chisel support 56, the chisel (chisel) (59) for applying continuous power toward the coal tar layer of the conduit surface receives the power according to the reciprocating motion of the piston (54). do. In the present embodiment, the lever 53 is supported in the case 49 in a state in which the lever 53 is pressed toward the air supply side to maintain an open state in which air is always ejected, and the air supply is provided through a separate controller (not shown). Controlled.

The working state of the second embodiment of the present invention configured as described above will be described.

First, when the rotating body 31 receives the rotational force of the driven gear 24 rotating by the driving of the second reduction motor 22 to rotate the first support 32, the first absorber 33 By operation, the first disc cutter 35 is rotated in the circumferential direction of the conduit to draw a cutting line, and then the air hammer 48 at the rear end of the first disc cutter 35 is operated, and the chisel 59 is cut at the cutting line. The coal tar layer is separated from the old pipe line 200 by continuously hitting the drawn coal tar layer.

Next, a third embodiment of the present invention will be described with reference to Figs. In this embodiment as well, the same reference numerals are given in the same configuration as in the first embodiment.

In the present embodiment, since the wheel cutter 60 is mounted instead of the second disc cutter, only the wheel cutter 60 will be described in detail.

As shown in FIG. 10, the wheel cutter 60 is supported by the pair of fourth brackets 38 and has a roller 61 having a slit 61a formed at a predetermined interval in the circumferential direction at an axial direction. Wow; A cutter blade 62 having an " reverse T " shape fitted to the slit 61a of the roller 61; A cap 63 mounted on both sides of the roller 61 to prevent the cutter blade 62 from being separated; And a bolt 64 for fixing the roller 61 and the cap 63.

As described above, according to the combination structure of the first disk cutter 35 and the wheel cutter 60, when the second support 36 rotates, the cutter blade is pressed by the second absorber 37 when the second support 36 rotates. The coal tar is removed by rotational force while drawing the cutting line in a direction orthogonal to the cutting line drawn by the first disk cutter 35 while the 62 is inserted to the coating depth of the coal tar layer. That is, as shown in FIG. 12, a checkerboard-shaped cutting line is drawn by the driving of the first disk cutter 35 and the wheel cutter 60, and the coal wheel is teared off while the wheel cutter 60 is rotated. It is to be peeled off and removed in the form.

The blade of the first disk cutter 35 and the cutter blade 62 of the wheel cutter 60 are formed in an uneven shape so as to easily peel off and peel off the coal tar layer having a cutting line as shown in FIG.

In the embodiment of the present invention by using the first disk cutter 35 and the wheel cutter 60 to form a checkerboard-shaped cutting line on the coal tar layer on the inner surface of the pipeline to present a structure to tear off the coal tar, but is limited thereto. It is well known that the wheel cutter 60 can be constituted alone. In this case, when the brake device 65 is mounted and rotated to draw the cutting line on the coal tar layer, the coal tar layer can be peeled off and peeled off by alternately rotating and braking driving.

The brake device 65 of the wheel cutter 60 includes a plurality of grooves 66 formed in circumferential directions on both sides of the roller 61, as shown in Fig. 12A; A ball 67 mounted in the groove 66; A spring 68 for providing a pressing force to the ball 67; It may have a structure including a fifth bracket 69 for supporting the spring 68 and a pressing force adjusting bolt 70 for adjusting the pressing force of the spring 68 through the fifth bracket 69 and the fifth bracket 69. In the above ball spring structure, when the roller 61 rotates, the ball 67 presses the roller 61 by the pressing force of the spring 68, thereby applying braking to the rotational force of the roller 61. Therefore, the roller 61 cuts and peels the coal tar layer by intermittent rotation while overcoming the braking force of the ball 67.

As another structure of the brake device 65, as shown in Fig. 13B, the disk plate 71 is in close contact with both side surfaces of the roller 61 and provides a braking force according to the rotation of the roller 61; A spring 72 providing a pressing force to the rear end of the disk plate 71; And a sixth bracket 73 supporting the spring 72. Similarly to the above-described ball spring structure, the disk braking device structure is such that the roller 61 cuts and peels off the coltra layer by intermittent rotation by braking of the disk plate 71.

A fourth embodiment of the present invention will be described with reference to Fig. 14, and the same components as in the first embodiment will be denoted by the same reference numerals.

As shown in the figure, in the present embodiment, the wheel cutter 60 attached to the front end of the main body 2 is removed, and the third end portion of the main body in the direction orthogonal to the first disk cutter 35 is attached to the third end. The structure which installed the disk cutter 75 is shown.

That is, four first disk cutters 35 are pivotally driven by the first absorber 33 at 90 ° intervals on the front end shaft of the main body 2. And 12 third absorbers 76 disposed on the rear end shaft of the main body 2 at intervals of 30 degrees; A seventh bracket (77) provided at the distal end of the third absorber (76); The structure is comprised by the said 7th bracket 77, Comprising: The 3rd disk cutter 75 provided in the axial direction of the pipe line perpendicular to the 1st disk cutter 35 of a front-end | tip part is comprised.

Here, the third disk cutter 75 has a structure in which two cutter bundles composed of three blades are mounted.

In the fourth embodiment configured as described above, when the main body 2 drives forward, the first disc cutter 35 draws a cutting line on the coal tar layer while rotating in the circumferential direction of the conduit, and after the main body 2 As the third disc cutter 75 provided at the end is moved by the traction force according to the movement of the main body 2, the coal tar is naturally peeled off by drawing the cutting line in a direction orthogonal to the cutting line drawn by the first disk cutter 35. Will be.

A fifth embodiment of the present invention is shown in Figs. 15-19.

In this embodiment, a hot air is applied to the coal tar layer, and a structure for scraping off the coal tar layer gelled with a scraper is proposed. In the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description of these components is omitted, and only the configuration of the coal tar removing apparatus will be described.

15 to 17, in this embodiment, the cable drum 81 is provided on the central axis of the rotating body 31; A cable distribution plate (82) installed at the front end of the cable drum (81) for distributing the cable drawn from the cable drum (81); A fourth absorber (84) provided with a distal end of the wheel (83) in contact with the conduit surface and configured to cushion the pressure corresponding to the pressure applied to the wheel (83); A scraper (85) installed to extend at an upper end of the fourth absorber (84) to scrape and remove the scale layer grown on the conduit surface while the end rotates in contact with the conduit inner surface; And a hot air fan 86 installed on one side of the scraper 85 and receiving hot power from the cable drum 81 to provide hot air to the inner surface of the conduit.

As shown in Fig. 16, the scraper 85 includes: an eighth bracket 87 provided at one end of the fourth absorber 84; A support box 88 fixed to the eighth bracket 87 and having a bit 88a at which an end thereof contacts the conduit surface and scrapes off the scale layer; A second tension spring (89) embedded in the support box (88) and providing a tension force to raise the bit (88a) upward; And a tension adjusting bolt 90 installed at a bottom of the support box 88 to adjust the tension of the second tension spring 89.

In the present embodiment, only one bit 88a is illustrated, but the present invention is not limited thereto, and two or three bits 88a may be continuously arranged. In this case, the descaling section per revolution of the scraper 85 becomes wider.

In addition, as another embodiment of the bit 88a, as shown in FIG. 18, the upper part of the square iron plate may be processed by a predetermined section, and thus the blade may be formed at the end of the bit bag formed at a predetermined interval. have. This structure is removable to the eighth bracket 87 via a bolt.

In the embodiment of the present invention, each bit 88a provided in the four eighth brackets 87 is sequentially spaced apart by a predetermined deviation t. That is, a structure in which the second bit passes successively to one side of the digit after the first bit passes, and the third and fourth bits pass in succession, is the first bit <second bit <third bit <fourth bit in order of deviation ( t) becomes large. By the structure of such a bit, the scale layer can be scraped out by the interval which added the width | variety of the 1st-4th bit per 1 rotation of scraper 85. FIG.

The hot air fan 86, as shown in Figure 19, and a case (91); A heater 92 installed in the case 91 and generating heat by receiving power from the cable drum 81; And an insulating material 93 for insulating the case 91 and the heater 92.

The working state of the fifth embodiment according to the present invention configured as described above will be described.

In the following, since the operation of the main body and the operation of the rotation process have already been described above, further description will be omitted and only the operation state of removing coal tar by using the scraper 85 will be described in detail.

When the coal tar removing device 8 is rotated by the rotational force transmitted from the driven gear 24 to the rotating body 31, the cable drawn out from the cable drum 81 is passed through the cable distribution plate 82 to each hot air fan. Power is supplied to 86. The hot air fan sends high temperature hot air to the pipe surface by driving the heater 92. As a result, the hardened coal tar is gelled, and the gel coal tar is rotated while the bit 88a protruding from the support box 88 toward the conduit surface is scratched. At this time, the bit 88a is firmly in contact with the conduit surface by the tensile force of the second tension spring 89 installed on the inner surface of the support box 88. When the tension of the second tension spring 89 is lowered or when the bit 88a does not come into contact with the conduit surface due to the tension of the second tension spring, the tension adjusting bolt 90 is adjusted to adjust the first. 2 By pushing the tension spring 89 toward the bit 88a side, the bit 88a can be removed by scraping to the end of the coal tar layer.

Each bit 88a installed in the four eighth brackets 87 is positioned with a sequential deviation t, so that the coal tar layer having the largest width can be scraped off in one rotation of the scraper 74.

When the coal tar layer is scratched by the scraper 85, a polishing tool such as a steel brush (not shown) is attached to the scraper instead of the scraper to smoothly polish the conduit surface to finish the customs work.

A sixth embodiment of the present invention will be described with reference to FIGS. 20 and 21. FIG.

The coal tar removing device in the present embodiment is a structure for moving the main body by a traction type, and the same as the coal tar removing device proposed in the first embodiment, and thus the detailed description thereof will be omitted, and only the traction device configuration will be described in detail.

In this embodiment, the coal tar removing device of the present invention proposes a suitable structure when passing through the curved pipe. In the case of a curved pipe, since it is difficult to move back and forth with the above-described self-propelled coal tar removing device, it is preferable to pass the curved pipe portion by a traction type.

As shown in the drawing, the towing apparatus according to the present embodiment includes first to third segment pipes 102a, 102b and 102c formed of a plurality of nodes and having a stepped portion at opposite ends thereof facing each other, and the first to It is fitted into and fixed to each end step of the third segment pipe (102a, 102b, 102c), and includes a center holding spring (104) for providing a flexible bendability when passing through the bend tube to accommodate a variable curvature constantly A main body 102; An over-extension prevention wire (103) fixed between the first to third segment pipes (102a, 102b, 102c) to prevent the center retaining spring 104 from being overextended when passing through the curved pipe; One end is installed at a predetermined angle on the outer surface of each segment pipe (102a, 102b, 102c) of the main body 102, the other end is rolling while contacting the inner surface of the aging pipe 200 to move the main body 102 in the front and rear direction Moving means for making; It is installed on the tip surface of the coal tar cutting device (8), is formed in a hemispherical shape to maintain the center of the diameter and the center of the body 102 when the main body 102 pulls the rope into the winch during passage of the bend pipe The center holding support 108 for and the center holding support 108 is installed in the center of the pull-out ring 110 is provided to be towed by the winch and the like.

In the present embodiment configured as described above, the main body 102 can be bent up to 90 ° by the elastic force of the spring 104 can pass through the 90 ° bent pipe in a state of accurately maintaining the center.

The moving means 106 is installed in the radial direction of 120 ° from the outer surface of each of the first to third segment pipes (102a, 102b, 102c), the shock absorber 112 with a built-in spring to protrude outward from the inside Wow; A fixing bracket 14 installed at an upper end of the shock absorber 112; It is fitted to the fixing bracket 114, and includes a wheel 116 that is in contact with the inner surface of the conduit 200 rolls 360 °.

In this embodiment, the wheel 116 is provided at 120 ° intervals as the moving means 106, but it is well known that it can be made of a caterpillar structure as shown in the first embodiment of the present invention.

 Referring to the operational state of the sixth embodiment of the present invention configured as described above are as follows.

As shown in the figure, when passing through the curvature having a predetermined curvature, the center holding spring 104 connecting the main body 102 by the radius of curvature is bent. Accordingly, the center of the body 102 and the center of rotation of the coal tar cutting device 8 are not to be eccentric, but to be pulled while being coincident with the center of the conduit. Further, when pulling the rope connected to the traction ring 110 with a winch or the like during the passage of the curved pipe, the center support 108 prevents the center of the coal tar cutting device 8 from moving away from the center of the conduit. In other words, when passing the curved pipe, the rope is pulled in contact with the upper end of the curved surface of the pipeline, but if there is no center support 108, the nozzle is in contact with the inside of the curved surface of the pipeline and the center of the pipeline and the nozzle are inconsistent Done. This state is such that the hemisphere center support 108 prevents the coal tar cutting device 8 from trying to escape the diameter of the conduit.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

1 is a flow chart showing a series of processes of a general aged pipeline regeneration process.

Figure 2 is an exploded perspective view showing the configuration of the first embodiment of the coal tar removing device of the old pipeline according to the present invention.

Figure 3 is a perspective view for showing a detailed configuration of the coal tar cutting device that is the main portion of the first embodiment of the present invention.

Fig. 4 is a sectional view showing the structure of a disc cutter which is a main part of the present invention.

5 is a state in which the coal tar applied to the inner surface of the pipeline after the passage of the old pipe passage descaling apparatus according to the first embodiment of the present invention is peeled off.

Figure 6 is a front view showing the configuration of a second embodiment of the coal tar removing device of the old pipeline according to the present invention.

Fig. 7 is an exploded perspective view showing the construction of an air hammer which is a main part of a second embodiment of the present invention.

Figure 8 is an exploded perspective view showing the configuration of the third embodiment of the coal tar removing device of the old pipeline according to the present invention.

9 is a perspective view for showing a detailed configuration of the coal tar cutting device that is the main part of the third embodiment of the present invention.

10 is an exploded perspective view of the wheel cutter shown in FIG. 8;

11 is a front sectional view and a side view showing the assembled state of the wheel cutter.

12 is a state in which coal tar applied to the inner surface of the conduit after the old pipe passage descaling apparatus according to the third embodiment of the present invention is peeled off in a checkered shape.

13A and 13B are exemplary views showing a braking device for intermittent braking of a spinning wheel cutter according to a second embodiment of the present invention.

Figure 14 is a perspective view showing the configuration of the fourth embodiment of the coal tar removing device of the old pipeline in accordance with the present invention.

15 is a perspective view showing a fifth embodiment of the coal tar removing device of the aging pipeline according to the present invention.

16 and 17 are a perspective view and a cross-sectional view for explaining the operating state of the fifth embodiment according to the present invention.

Fig. 18 is a modified example of the scraper, which is a main part of the fifth embodiment of the present invention.

Fig. 19 is a sectional view showing the construction of a hot air fan that is a main part of a fifth embodiment according to the present invention.

20 is a sixth embodiment of the coal tar removing device of the old pipeline according to the present invention, a perspective view showing a configuration applied to the curved pipe.

Fig. 21 is a sectional view showing a state in which a coal tar removing device according to a sixth embodiment of the present invention passes through a curved pipe;

Claims (20)

A main body moving forward and backward in the inner surface of the old pipe; A moving unit having one side fixed to an outer circumferential surface of the main body at a predetermined angle, and the other side having a buffer unit configured to expand and contract in response to the pressing pressure to travel the uneven surface by the scale of the inner surface of the pipeline; Rotating means is installed at the front end of the main body, and rotated by a power supplied from the outside; And Coal tar cutting means is installed radially on the central axis of the rotating means, the end portion is rotated in contact with the pipe surface at a constant pressure to cut off the coal tar layer applied to the old pipe surface by peeling the cutting line Coal tar removal device of the old pipe comprising a. The method of claim 1, The means of transportation Inserted at a predetermined interval on the outer circumferential surface of the body, one side is fixed, the other side support ring for moving along the outer surface of the body during stretching movement; A cross link crossing the hinge in an X-shape and connected to the support ring, and having protrusions at sides of each end, and buffering driving around the hinge in response to the pressing pressure; A first bracket into which each end of the cross link is fitted and having a long hole formed at a side thereof for accommodating a moving section of the projection when the cross link is opened and narrowed; Cloud means is installed in the first bracket, the rolling means for traveling in the forward and backward direction in contact with the inner surface of the pipe; A first speed reduction motor installed at one end of the rolling means to provide a front and rear rotational force; And The first tension spring is fitted to the outer surface of one side of the main body, the first supporting spring to provide a restoring force when the moving support ring of one side is pushed Coal tar removal device of the old pipe comprising a. The method of claim 2, The coal tar removal device of the old pipe, characterized in that the rolling means made of a caterpillar (caterpiller). The method of claim 1, The rotating means A second bracket installed at the front end of the main body; A second reduction motor fixed to the bracket and having a motive gear; And A driven gear that is engaged with the motive gear of the reduction motor to transmit rotational force Coal tar removal device of the old pipe comprising a. The method according to any one of claims 1 to 4, The coal tar cutting means A rotating body detachably fitted to a front end of the main body and rotating to receive a rotational force from the rotating means; First supporting means installed at a tip of the rotating body in a (+) shape; A first absorber extending radially from the circumferential surface of the first supporting means and pressurizing at a constant pressure toward the inner surface of the conduit while driving bufferedly; A pair of third brackets extending from the distal end of the first absorber; A plurality of first disk cutters supported by the third bracket and rotating along the circumferential surface of the conduit to draw cutting lines on the coal tar layer; Second support means installed on a leading central axis of the main body, the second support means being located in a (x) shape at a rear side of the first support means; A second absorber (absorber) extending radially from the circumferential surface of the second support means and configured to buffer at a constant pressure toward the inner surface of the pipe; A pair of fourth brackets extending from the distal end of the second absorber; And A second disk cutter supported by the fourth bracket and rotating along the circumferential surface of the conduit to peel the coal tar layer while drawing the cutting line in the same circumferential direction as the cutting line formed by the first disk cutter. Coal tar removal device of the old pipe comprising a. The method according to any one of claims 1 to 4, The coal tar cutting means A rotating body detachably fitted to a front end of the main body and rotating to receive a rotational force from the rotating means; First supporting means installed at a tip of the rotating body in a (+) shape; A first absorber extending radially from the circumferential surface of the first supporting means and pressurizing at a constant pressure toward the inner surface of the conduit while driving bufferedly; A pair of third brackets extending from the distal end of the first absorber; A plurality of first disk cutters supported by the third bracket and rotating along the circumferential surface of the conduit to draw cutting lines on the coal tar layer; Second support means installed on a leading central axis of the main body, the second support means being located in a (x) shape at a rear side of the first support means; A second absorber extending in a radial direction from the circumferential surface of the second supporting means and configured to buffer the pressure to a predetermined pressure toward the inner surface of the pipe; A pair of fourth brackets extending from the distal end of the second absorber; A wheel supported by the fourth bracket and in close contact with the conduit surface and rolling; A grid-shaped auxiliary bracket provided on a side of the fourth bracket; And Air hammer installed in the auxiliary bracket and removed by applying a continuous blow to the coal tar layer by air pressure Coal tar removal device of the old pipe comprising a. The method of claim 6, The air hammer A throttle body; A nipple installed at an outer side of the throttle body and connected to an external air hose; A piston which is embedded in the throttle body and continuously reciprocates; A cylinder into which the piston is fitted; Square groove is formed in one side, the chisel support is fitted to the cylinder; A sleeve inserted outside the cylinder to prevent the chisel support from being separated; A second tension spring installed in the sleeve and cushioning when the piston continuously reciprocates by air pressure; And One side portion is detachably fitted into the square groove of the chisel support, and a chisel is continuously applied toward the coal tar layer on the conduit surface by receiving power from the reciprocating motion of the piston. Coal tar removal device of the old pipe comprising a. The method according to any one of claims 1 to 4, The coal tar cutting means A rotating body detachably fitted to a front end of the main body and rotating to receive a rotational force from the rotating means; First support means of a (+) shape provided at the tip of the rotating body; A first absorber extending radially from the circumferential surface of the first supporting means and pressurizing at a constant pressure toward the inner surface of the conduit while driving bufferedly; A pair of third brackets extending from the distal end of the first absorber; A plurality of disc cutters supported by the third bracket and rotating along the circumferential surface of the conduit to draw cutting lines on the coal tar layer; A second support means installed on the leading central axis of the main body and positioned in a (x) shape on the rear side of the first support means; A second absorber extending in a radial direction from the circumferential surface of the second supporting means and configured to buffer the pressure to a predetermined pressure toward the inner surface of the pipe; A pair of fourth brackets extending from the distal end of the second absorber; And Spinning wheel cutter which is supported by the fourth bracket and rotates along the circumferential surface of the conduit and tears off the coal tar layer while drawing the cutting line in a direction orthogonal to the cutting line formed by the disk cutter. Including but not limited to: The coal tar removal device of the old pipe line, characterized in that the blade of the disk cutter and the wheel cutter is made of irregularities. The method of claim 8, The wheel cutter A roller supported on the pair of fourth brackets, the roller having a slit formed at a predetermined interval in an axial direction on a circumferential surface thereof; A "reverse T" shaped cutter blade fitted into the slit of the roller; Caps mounted on both sides of the roller to prevent the cutter blade from being separated; And Bolt for fixing the roller and cap Coal tar removal device of the old pipe comprising a. The method of claim 5, wherein The blades of the first and second disk cutter is a coal tar removal device of the old pipe, characterized in that formed in the concave-convex shape in order to improve the peeling function of the coal tar layer. The method of claim 6, The blade of the first disk cutter is a coal tar removal device of the old pipe line, characterized in that formed in the concave-convex shape in order to improve the peeling function of the coal tar layer. The method according to any one of claims 1 to 4, The coal tar cutting means A rotating body detachably fitted to a front end of the main body and rotating to receive a rotational force from the rotating means; Third supporting means installed at the front end of the rotating body; A third absorber extending radially from the circumferential surface of the third supporting means and pressing at a constant pressure toward the inner surface of the conduit while driving bufferedly; A pair of fifth brackets extending from the distal end of the third absorber; A roller supported by the fifth bracket and cutter blades which are planted at predetermined intervals on the circumferential surface of the roller, and axial cutting lines are drawn on the coal tar layer while rotating along the circumferential surface of the conduit; Spinning wheel cutter for tearing apart the coal tar layer by performing braking drive alternately; And Braking means for providing a braking force to the wheel cutter Including, The coal tar removal device of the old pipe, characterized in that the blade of the water wheel cutter is made of irregularities. The method of claim 12, The braking means A plurality of grooves circumferentially formed on both sides of the roller; A ball mounted to the groove; A third tension spring for providing a pressing force to the ball; A sixth bracket supporting the third tension spring; And An urging force adjusting bolt penetrating the sixth bracket and adjusting the urging force of the third tension spring. Coal tar removal device of the old pipe comprising a. The method of claim 12, The braking means A disk plate in close contact with both sides of the roller to provide a braking force according to the rotation of the roller; A fourth tension spring for providing a pressing force to the rear end of the disk plate; And Sixth bracket for supporting the fourth tension spring Coal tar removal device of the old pipe comprising a. The method according to any one of claims 1 to 4, The coal tar cutting means Fourth supporting means mounted to the distal end of the main body; A plurality of fourth absorbers (absorbers) extending radially from the circumferential surface of the fourth supporting means and pressurizing at a constant pressure toward the inner surface of the conduit while driving bufferedly; A pair of seventh brackets extending from the distal end of the fourth absorber; A plurality of first disk cutters supported by the seventh bracket, the blades being positioned in the circumferential surface direction of the conduit to rotate along the circumferential surface of the conduit to draw a cutting line on the coal tar layer; Fifth supporting means mounted to the rear end of the main body; A plurality of fifth absorbers which extend radially from the circumferential surface of the fifth supporting means and pressurize at a constant pressure toward the inner surface of the conduit while driving bufferedly; A pair of seventh brackets extending from the distal end of the fifth absorber; And Supported by the seventh bracket, the blade is positioned in the axial direction orthogonal to the circumferential surface of the pipe line and pulled in the direction perpendicular to the cutting line drawn by the first disc cutter while peeling coal tar while being pulled according to the movement of the main body. Including a plurality of third disk cutters, The first disk cutter is a set of cutters in which a plurality of blades in a bundle, the second disk cutter is provided with a plurality of sets of cutters in a bundle of a plurality of blades, The coal tar removing device of the old pipe line, characterized in that the blade of the first and third disk cutter is made of irregularities. The method of claim 5, wherein One side is mounted to the front end of the rotating body, the other side is installed on the disc cutter, the coal tar removal apparatus of the old pipe further comprises a blowing means for transferring the coal tar fragments to the front side. The method of claim 16, The blowing means is An air shaft installed in the third bracket in the axial direction and having a hollow hole formed in the axial direction and a plurality of branch holes penetrating radially from the hollow hole; An auxiliary bracket installed at a circumferential surface of the air shaft so that the first and second disc cutters are positioned at predetermined intervals, and having an air ejection port configured to communicate with the hollow hole of the air shaft to eject air to the conduit surface; A bolt for fixing the auxiliary bracket and each of the first and second disc cutters in an axial direction; One end is connected to the distribution plate and the other end is connected to the air shaft to provide an air supply path Coal tar removal device of the old pipe comprising a. The method of claim 1, The main body First to third segment pipes each including a plurality of nodes and having a stepped portion at opposite ends facing each other; A center holding spring fixed to each end stepped portion of the first to third segmented pipes to provide flexible bendability during passage of the curved pipe to accommodate a variable curvature; One end is installed at a predetermined angle on the outer surface of the first to third segment pipe, the other end is moving means for rolling operation while contacting the inner surface of the aging pipe Including; It is installed on the front end surface of the coal tar cutting means, is formed in a hemispherical center support for maintaining the center of the diameter and the center of the body when the main body pulls the rope into the winch when passing the bent pipe and Installed in the center of the center holding support is a coal tar removal device of the old pipe further comprises a traction ring provided to be towed by a winch or the like. The method of claim 18, And a wire for fixing the first to third segment pipes to prevent the center holding spring from being overextended when the main body passes through the curved pipe. main body; One side is fixed to the outer circumferential surface of the main body at a predetermined angle, the other side is connected to the shock absorbing unit so as to smoothly run the cross-link installed in the X-shape to drive in response to the pressing pressure, the uneven surface by the scale of the inner surface of the pipe A moving means having a caterpillar contacting the inner surface of the conduit and a first reduction motor provided on the caterpillar to provide a front and rear rotational force; A rotation means provided at the front end of the main body and having a second reduction motor having a motive gear mounted on a shaft, and a driven gear meshed with the motive gear; A cable drum provided on the shaft of the rotating means; A distribution plate installed at the front end of the cable drum and distributing a cable; A fifth absorber installed radially on the central axis of the rotating means, the wheel having a rolling motion in contact with a conduit surface at an end thereof, the buffer absorbing in response to pressure applied to the wheel; A bracket extending to the upper end of the fifth absorber, a support box fixed to each of the brackets, a bit mounted to protrude from an upper end of the support box, and a tension force provided in the support box to raise the bit. And a tension tension bolt for adjusting the tension of the second tension spring, the second tension spring being installed at the bottom of the support box, and rotating together with the fifth absorber to scrape coal tar by contacting the bit with the conduit surface. Scrapers for making; Installed on one side of the scraper, the hot air providing means for providing hot air to the inner surface of the pipe by receiving power from the cable drum Including, The scraper includes at least one bit in contact with the conduit surface, the bit tar of the scraper provided at the end of each absorber has a sequential deviation characterized in that the coal tar removal apparatus in the old pipe.

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