JP2008272995A - Lining releasing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lining releasing apparatus capable of safely, rapidly and efficiently performing a releasing operation of a lining material in a place which an operator can not approach or in a place where the operation by the operator is restricted in a short time without being based on a human power and without destroying, breaking and deforming a substrate. <P>SOLUTION: The lining releasing apparatus 1 for releasing the lining material R covered on the upper face of the substrate B from the substrate B, is provided with a running vehicle 10 running on the upper face of the substrate B, a high-frequency heating coil 20 which is carried on the running vehicle 10 and performs high-frequency heating on a definite region of the substrate B by oppositely arranging on the upper face of the substrate B, and a scraper 30 which is carried on the running vehicle 10 and enters between the substrate B induction-heated by the high-frequency heating coil 20 and the lining material R becoming easily releasable by heat from the substrate B to release the lining material R. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a lining peeling apparatus using high frequency induction heating.

Conventionally, as a lining peeling method for peeling a lining material stretched on a base material such as an inner wall surface of a tank, it has been common to mechanically peel the lining material or to burn the lining material.
Japanese Patent Laid-Open No. 7-164445 (Patent Document 1) provides a lining peeling method in which a lining steel pipe is cooled and the cooled lining material is peeled off by impact.
On the other hand, in JP-A-2005-233699 (Patent Document 2), a heating member heated by high frequency induction is applied to a concrete wall, thereby making the concrete surface layer portion where the radioactive material adheres and penetrates brittle, A method and apparatus for stripping concrete that destroys the concrete surface layer is provided.
JP-A-7-164445 JP 2005-233699 A

However, in a tank etc. with the lining to be peeled off, it is impossible for the operator to enter, or the work in the tank etc. is dangerous for the operator and long-term work cannot be done. is there. Therefore, there has been a problem in peeling the lining by human power in such facilities and places.
Moreover, the thing shown to the said patent document 1 has to cool a lining steel pipe, and compared with the case where it heats, the installation etc. required for cooling are not easy. Further, since it is necessary to apply an impact, there is a problem that it is not possible to peel only the lining material while avoiding destruction, breakage, deformation or damage of the steel pipe itself.
Moreover, what is shown in the said patent document 2 is actually the method which destroys the concrete surface itself even if it says the peeling method using high frequency induction heating, and is not the method of peeling a lining material at all.

  Therefore, the present invention eliminates the above-mentioned drawbacks in the prior art, and the lining material peeling work in a place where the worker cannot approach or where work by the worker is restricted in a short time can be performed without using human power. It is an object of the present invention to provide a lining peeling apparatus that can be performed safely, promptly and efficiently without being destroyed, damaged or deformed.

In order to achieve the above object, a lining peeling apparatus of the present invention is a lining peeling apparatus that peels a lining material coated on an upper surface of a base material from the base material. A high-frequency heating coil that is mounted on the upper surface of the base material and is arranged to face the base material to inductively heat a certain area of the base material; a base material that is mounted on the traveling vehicle and is induction-heated by the high-frequency heating coil; A first feature is that a scraper that penetrates between the lining material that is easily peeled off by heat from the base material and peels the lining material is provided.
It is assumed that the base material is a material that can be subjected to high-frequency induction heating. As such a material, there is typically an iron-based metal material. Of course, the base material may be any material capable of high-frequency induction heating.
In addition to the first feature, the lining peeling apparatus of the present invention is characterized in that the high-frequency heating coil has a shape parallel to the base material, and the facing distance from the base material is adjustable. It is a feature.
In addition to the first or second feature, the lining peeling device of the present invention has a third feature that a cutting cutter for cutting the lining material peeled by the scraper is mounted on the traveling vehicle.
In addition to the third feature, the lining peeling apparatus of the present invention has a configuration in which the scraper has a shape in which the thickness of the tip is thin and becomes thicker toward the rear, and the peeled lining material is guided to the cutting cutter. This is the fourth feature.
Moreover, in addition to the said 3rd or 4th characteristic, the lining peeling apparatus of this invention is equipped with the vertical cutter which cuts vertically in a running direction according to the width | variety of the peeled lining material at least. This is the fifth feature.

According to the lining peeling apparatus according to claim 1, the lining peeling apparatus peels the lining material coated on the upper surface of the base material from the base material, and is mounted on the traveling vehicle that travels on the upper surface of the base material. A high-frequency heating coil for high-frequency induction heating of a certain region of the base material by being disposed facing the top surface of the base material, a base material mounted on the traveling vehicle and induction-heated by the high-frequency heating coil, and the base Since there was a scraper that penetrated between the lining material that became easy to peel off due to heat from the material and peeled the lining material,
By supplying a high-frequency current to the high-frequency heating coil mounted on the traveling vehicle, the surface of the base material facing the high-frequency heating coil is induction-heated. As a result, the interface of the lining material bonded to the surface of the base material is heat-transferred and easily peeled off. Then, when the scraper enters between the lining material and the base material that are easily peeled off, the lining material is easily peeled off.
Since only the substrate surface is heated by the high-frequency heating coil, and the lining material is not directly heated, the temperature of the lining material can be kept low. Therefore, the lining material does not ignite, combustion gas is generated or melted, and the peeling can be performed quickly without requiring a safe and troublesome post-treatment.
Unlike the peeling method using mechanical force, the lining material can be peeled without generating dust or noise and without destroying, damaging or deforming the base material.
Further, by remotely operating the traveling vehicle, unattended separation work can be performed in a place where an operator cannot enter or where long-term work cannot be performed.

Moreover, according to the lining peeling apparatus of Claim 2, in addition to the effect by the structure of Claim 1, a high frequency heating coil is made into the shape parallel to a base material, and the facing distance with this base material is adjusted. Because it is arranged as possible
The substrate parallel to the high-frequency heating coil can be heated uniformly and without unevenness, and can be smoothly peeled without leaving a portion that is difficult to peel off. Further, by adjusting the facing distance according to the conditions of the base material and the lining material, it is possible to adjust the optimum peeling condition according to the material, thickness, and other conditions of the base material and the lining material.

Moreover, according to the lining peeling apparatus of Claim 3, in addition to the effect by the structure of Claim 1 or 2, the cutting cutter which cut | disconnects the lining material peeled by the scraper is mounted in a traveling vehicle. Because there is
While traveling with a traveling vehicle, the lining material peeled off by the scraper can be subsequently cut quickly. Accordingly, the traveling of the traveling vehicle is not hindered by the peeled lining material, and it is possible to ensure reliable running and continuation of the peeling work. Further, it becomes possible to cut and collect the lining material peeled off while running.

Moreover, according to the lining peeling apparatus of Claim 4, in addition to the effect by the structure of Claim 3, a scraper is made into the shape where the thickness of a front-end | tip becomes thin and goes to back, and the peeled lining material Is configured to guide the cutting cutter,
Due to the thin thickness of the tip, the scraper can easily enter between the lining material and the substrate, and can be easily peeled off. Further, since the thickness increases toward the rear, the separation gap can be increased in response to traveling, and the separated lining material can be smoothly guided to the cutting cutter. Therefore, it becomes easy to cut with a cutting cutter.

Further, according to the lining peeling apparatus of the fifth aspect, in addition to the function and effect of the configuration according to the third or fourth aspect, the cutting cutter is at least vertically aligned with the width of the peeled lining material in the traveling direction. Because it has a vertical cutter to cut,
The portion of the lining material peeled off by the scraper can be cut and separated from other portions that have not yet been peeled off. As a result, traveling of the traveling vehicle can be facilitated, and post-processing of the cut and separated lining material can be easily performed.

A lining peeling apparatus according to an embodiment of the present invention will be described with reference to the following drawings.
FIG. 1 is a perspective view of a lining peeling apparatus according to an embodiment of the present invention, and is a view seen through a main part. FIG. 2 is a side view of the lining peeling apparatus according to the embodiment of the present invention, and is a view seen through the inside. FIG. 3 is a partially enlarged view of the lining peeling apparatus according to the embodiment of the present invention.

  Referring to FIG. 1, a lining peeling apparatus 1 according to an embodiment of the present invention includes a traveling vehicle 10, a high-frequency heating coil 20 mounted on the traveling vehicle 10, a scraper 30, and a cutting cutter 40.

Here, the base material B and the lining material R will be described with reference to FIG.
The base material B is a base material that constitutes the inner surface of a steel tank, for example. As a premise, this base material B needs to be made of a material capable of high-frequency induction heating. The lining material R is stretched and coated on the surface of the base material B with or without an adhesive.
As the lining material R, polymer materials including rubber and plastic are targeted. More specifically, synthetic rubbers such as various natural rubbers and chloroprene rubbers are targeted. The heat resistance of rubber is, for example, about 70 to 150 ° C., but can be maintained in a state that does not change even at 200 to 300 ° C. for a short time (tens of minutes). Moreover, the lining material by plastics, such as tar epoxy, polyethylene, a polyurethane, and FRP, becomes object. In addition to thermoplastics, plastics are also subject to thermosetting.
These lining materials R are used for coating the surface of the base material B for various purposes such as corrosion resistance and wear resistance, for example, on the inner wall surface of various tanks and other places.
When the lining material R is rubber, it is bonded to the base material B by an adhesive in which the same rubber called co-glue is dissolved.
The adhesive does not necessarily need to be the co-glue. However, it is preferable as a target to be softened by receiving heat from the base material B prior to the lining material R and easily peeled off. For example, when the surface of the base material B is heated to about 200 to 300 ° C., an adhesive that can be easily peeled by being heated to 100 to 200 ° C. by heat transfer from the substrate B is preferable as a target.

The traveling vehicle 10 is provided with a plurality of magnet wheels 12 on both sides of a self-propelled vehicle body 11. A crawler 13 which is a moving body is attached to the magnet wheel 12. By using the magnet wheel 12, it is possible to reliably ground and move the base material B made of a material adsorbed to a magnet such as an iron-based material. Of course, it is possible to travel on the surface of the base material B in the vertical direction or on the ceiling surface against gravity. In addition, the crawler 13 can reliably capture the surface of the base material and travel stably.
Further, the traveling vehicle 10 is provided with a touch sensor 14 in the shape of a bumper at the front portion of the vehicle body 11 for detecting contact with an obstacle or the like ahead during traveling. At both ends of the touch sensor 14, a distance sensor 15 for sensing and measuring a front target and a point distance is provided. By providing the touch sensor 14 and the distance sensor 15, it is possible to perform a safe stop or a detour traveling with respect to an obstacle.

  The traveling vehicle 10 is provided with an illumination 16 that brightens the front traveling on the roof of the vehicle body 11 and a monitoring camera 17 that can view the front traveling. It is comprised so that driving | running | working of a driving | running | working vehicle and the operation | work by the high frequency heating coil 20 and the cutting cutter 40 can be remote-controlled while seeing with a monitor.

  A dust case 18 (see FIG. 2) is provided at the rear of the vehicle body 11 of the traveling vehicle 10. A discharge pipe 18b is connected to a discharge port 18a at the rear portion of the dust case 18 so that the peeled lining material accommodated in the dust case 18 can be discharged from the traveling vehicle 10 to the outside. .

  A communication control device 19 for performing a remote operation is provided at the rear of the vehicle body 11 of the traveling vehicle 10. An antenna 19a and an energization cord 19b extending rearward are provided on the rear part of the vehicle body 11 outside the vehicle. This allows two-way communication between the traveling vehicle 10 and the external remote control unit.

The high-frequency heating coil 20 is provided at the front portion of the traveling vehicle 10. The high-frequency heating coil 20 can be configured, for example, by arranging a copper hollow rectangular tube 21 in a planar coil shape and insulating and heat-insulating the periphery thereof. The high frequency heating coil 20 is configured to face the base material B in parallel. The width of the high-frequency heating coil 20 is set to be slightly wider than the inter-vehicle width of the magnet wheel 12 of the traveling vehicle 10, for example.
The high-frequency heating coil 20 can be attached by a known position adjusting means so that the facing distance to the base material B can be adjusted. Thereby, the heating temperature and heating rate for the base material B can be changed.
Of course, the high-frequency heating coil 20 may have a planar shape, a curved surface shape that can apply uniform heating to the base material B corresponding to the surface shape of the base material B, and other shapes. .

A high frequency current is passed through the high frequency heating coil 20. As a result, the base material B facing the high-frequency heating coil 20 is induction-heated. The lining material R is easily peeled off from the base material B by heating the base material B.
As the traveling vehicle 10 moves, the high frequency heating coil 20 moves in a state of tracing the surface of the lining material R, the surface of the base material B is heated one after another by the output high frequency, and the lining material R is sequentially moved in the traveling direction. It becomes easy to peel off.

The high-frequency heating coil 20 uses, for example, a power supply with a voltage of 220 V, can have a frequency of 10 kHz to 40 kHz, and an output of several tens of kW. By adjusting the output of the high-frequency heating coil 20, the heating temperature and the heating rate for the base material B can be adjusted.
Cooling water is circulated through the copper hollow rectangular tube 21 of the high-frequency heating coil 20. The cooling water is circulated into the copper hollow rectangular tube 21 through a cooling water circulation tube 22 connected to the rear portion of the vehicle body 11 of the traveling vehicle 10.

Referring also to FIG. 3, the scraper 30 is behind the high-frequency heating coil 20 and has a substantially wedge-shaped cross-sectional shape in which the tip is thin and becomes thicker toward the rear.
The scraper 30 enters between the base material B and the lining material R that covers the upper surface of the base material B at the tip, and peels off both as the traveling vehicle 10 travels.
One or more scrapers 30 are arranged in parallel so that the lining material R can be peeled off. When the peeling width may be narrow, one scraper is sufficient, but when increasing the peeling width, it is necessary to arrange a plurality of scrapers in parallel. The width of the scraper 30 is slightly narrower than the width of the high-frequency heating coil 20, but in this embodiment, the scraper 30 is disposed between the crawlers 13 and 13.
The lining material R peeled off by the scraper 30 is guided along the upper surface of the scraper 30, the peeling interval is gradually increased, and the lining material R is guided to the cutting cutter 40.

  The cutting cutter 40 includes a longitudinal cutting cutter 41 that longitudinally cuts in the running direction according to the width of the lining material R peeled by the scraper 30, and a transverse cutting cutter that further cuts the lining material R further peeled thereafter. 42.

The vertical cutting cutter 41 is provided with a disk-shaped blade 41a that is easy to run and cut around its axis. At least a pair of the disc-shaped blades 41a is provided so that the disc-shaped blade 41a can be cut substantially in accordance with the peeling width of the lining material R peeled by the scraper 30. Further, the number of disk-shaped blades 41a can be increased according to the width of the lining material R to be peeled. In this embodiment, three blades are added in the center. By using three blades, the width of the peeled lining material R in the longitudinal direction can be further cut in half.
Further, the disc-shaped blade 41 a of the vertical cutting cutter 41 is disposed so as to be adjacent to the midway position of the scraper 30. In the present embodiment, a total of three disk-shaped blades 41 a are provided adjacent to each other in the middle of the scraper 30, one between two parallel scrapers 30 and two on both sides.
The vertical cutting cutter 41 can cut the lining material R that has been guided by the upper surface of the scraper 30 when the disk-shaped blade 41a rotates in the running direction. At this time, by ensuring a large separation interval of the lining material R separated by the scraper 30, the separated lining material R can be surely cut without the disk-shaped blade 41a hitting the base material B. it can.

The cross-cutting cutter 42 is a cutter that cuts the lining material R cut by the vertical cutting cutter 41 in the width direction so that it can be more easily discharged.
The transverse cutter 42 is a cutter provided with a number of transverse blades 42a like gears on the outer peripheral side of a cylindrical shaft. The transverse cutter 42 is provided as one cutter having a width slightly larger than the width of the peeled lining material R longitudinally cut by the vertical cutter 41.
A guide roller 43 is provided below the transverse cutter 42.
The rear end portion of the scraper 30 is provided to extend just before the guide roller 43, and the longitudinally cut lining material R guided by the scraper 30 is taken over by the guide roller 43.
The guide roller 43 places the peeled lining material R, which has been moved rearward on the scraper 30, on the roller and guides the lining material R into the transverse cutter 42.

The cross-cutting cutter 42 is provided with a dust removal brush 44 that removes the cutting dust of the lining material R on the side wall of the vehicle body 11 of the traveling vehicle 10 adjacent to the rear of the cross-cutting cutter 42.
The lining material R finely crossed in the width direction by the crossing cutter 42 is collected in a dust case 18 behind the crossing cutter 42.
The lining material R accommodated in the dust case 18 is sucked into the discharge pipe 18b from the discharge port 18a and discharged to the outside.

  The cutting cutter 40 composed of the vertical cutting cutter 41 and the horizontal cutting cutter 42 rotates them in the forward direction, so that when the lining material R is cut, the cutters 41 and 42 are located between the scraper 30 and the cutting cutter 40. Thus, the lining material R is sandwiched or the lining material R is pulled in, so that the traveling vehicle 10 is more reliably and stably driven.

As an example of use of the apparatus of the present invention, for example, use in a tank will be described.
First, the traveling vehicle 10 of the present apparatus 1 is carried into the tank. And the traveling vehicle 10 arrange | positioned at the base material B which comprises the wall surface in a tank starts driving | running | working by remote control, seeing a monitor from the outside. Next, the high frequency heating coil 20 is turned on, high frequency power is applied, and the circulation of the cooling water of the high frequency heating coil 20 is started. Further, the vertical cutting cutter 41 and the horizontal cutting cutter 42 are rotated. Further, suction by the discharge pipe 18b is started. These switch operations may be performed automatically and continuously when the high-frequency heating coil 20 is turned on.
When the scraper 30 can be adjusted to the retracted position and the peeling position, the scraper 30 is adjusted to the peeling position, that is, the position facing the base material B and the lining material R. deep.
The traveling speed of the traveling vehicle 10 is about 5 m / min, for example.
Moreover, the frequency and electric power of the high frequency heating coil 20 are adjusted so that the region of the base material B facing the high frequency heating coil 20 is heated to about 100 to 200 ° C. as the traveling vehicle 10 moves.
By doing in this way, the area | region which the base material B respond | corresponds with driving | running | working of the traveling vehicle 10 is heated to 100-200 degreeC, and, thereby, the adhesive surface of the lining material R and the said base material B becomes easy to peel off. Therefore, the scraper 30 easily enters between the lining material R and the base material B, and peels the lining material R while matching the traveling speed of the traveling vehicle 10. The peeled lining material R is cut in the longitudinal direction by a vertical cutting cutter 41 arranged in line with the scraper 30 and further cut finely by the horizontal cutting cutter 42. The finely cut lining material R is accommodated in a dust case 18 at the rear of the vehicle body 11, and is further sucked into a discharge pipe 18b and discharged to the outside.

It is the perspective view of the lining peeling apparatus which concerns on embodiment of this invention, and is the figure seen through seeing the principal part. It is the side view of the lining peeling apparatus which concerns on embodiment of this invention, and is the figure seen through seeing the inside. It is a partial enlarged view of the lining peeling apparatus which concerns on embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lining peeling apparatus 10 Traveling vehicle 11 Car body 12 Magnet wheel 13 Crawler 14 Touch sensor 15 Distance sensor 16 Illumination 17 Camera 18 Dust case 18a Discharge port 18b Discharge pipe 19 Communication control device 19a Antenna 19b Energizing cord 20 High frequency heating coil 21 Copper hollow angle Pipe 22 Cooling water circulation tube 30 Scraper 40 Cutting cutter 41 Vertical cutting cutter 41a Disk-shaped blade 42 Horizontal cutting cutter 42a Horizontal blade 43 Guide roller 44 Dust removal brush B Base material R Lining material

Claims (5)

  A lining peeling apparatus that peels a lining material coated on a substrate upper surface from a substrate, the vehicle traveling on the substrate upper surface, mounted on the traveling vehicle, and disposed facing the substrate upper surface. A high-frequency heating coil that performs high-frequency induction heating on a certain region of the base material; a base material that is mounted on the traveling vehicle and is induction-heated by the high-frequency heating coil; and a lining material that is easily peeled off by heat from the base material A lining peeling apparatus comprising a scraper that penetrates in between and peels the lining material.   The lining peeling apparatus according to claim 1, wherein the high-frequency heating coil has a shape parallel to the base material, and is arranged so that a facing distance from the base material can be adjusted.   The lining peeling apparatus according to claim 1 or 2, wherein a cutting cutter for cutting the lining material peeled by the scraper is mounted on the traveling vehicle.   4. The lining peeling apparatus according to claim 3, wherein the scraper has a shape in which the tip is thin and thickens toward the rear, and the peeled lining material is guided to a cutting cutter.   5. The lining peeling apparatus according to claim 3, wherein the cutting cutter includes a longitudinal cutting cutter that vertically cuts in a traveling direction in accordance with a width of the peeled lining material.

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