JPH08120617A - Method and device for cutting asphalt road surface - Google Patents

Abstract

PURPOSE: To efficiently heat asphalt of a surface layer of an asphalt road surface so that the asphalt can be easily cut off. CONSTITUTION: As a cutting device body l travels, a rotary drum 13 rotates so that protruding blades 14 form cutting traces 21c and cracks 21d in a surface layer asphalt 21a and a sand scattering nozzle 12 scatters sands 24 over an asphalt road surface and a sprinkling nozzle 11 sprinkles water over the asphalt road surface. After a compaction roller 15 spreads the sands 24 and water 23 uniformly over and into the surface of the surface layer asphalt 21a, microwaves 22 are emitted from a microwave radiation antenna 5 toward the road surface to heat the water 23. The heated water 23 in turn heats the asphalt 21a to soften it and a blade 6a of a cutting machine cuts the softened asphalt 21a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of cutting an asphalt road surface and a cutting apparatus therefor.

[0002]

2. Description of the Related Art A road paved with asphalt has its surface layer deformed and deteriorated by the passage of vehicles. Therefore, the road surface is repaired by cutting and removing the surface layer of the road surface and then laying new asphalt.

FIG. 3 shows an asphalt road surface cutting device used for repairing such an asphalt road surface.
As shown in FIG. 3, a truck vehicle type cutting device body 51
An operation panel 52, a generator 53, and a microwave generator 54 are loaded on the cargo bed portion 51b. A microwave radiating antenna 55 is provided below the cutting device body 51. A cutting machine 5 having a blade 56a on the rear side of the cutting apparatus body 51 of the microwave radiation antenna 55.
6 is provided. The microwave radiation antenna 55 and the cutting machine 56 are covered with an enclosure 57. At the rear of the cutting device body 51, a carry-out machine 58 for carrying out the cut asphalt is provided. In addition, in FIG.
1 is an asphalt road surface, 51a is a driver's cab, and 60 is a dump truck.

A method of cutting an asphalt road surface with such a cutting device will be described below. Operate the operation panel 52,
When the generator 53 is actuated and the microwave generator 54 is actuated, the microwave 22 is radiated from the microwave radiating antenna 55 and the asphalt road surface 21 is heated and softened, as shown in FIG. As the asphalt road surface 21 is softened and the cutting device body 51 is run, the cutting machine 56
Blade 56a cuts the softened surface asphalt 21a of the asphalt road surface 21, and the unloader 58 loads the cut surface asphalt 21a into the dump truck 60.

Therefore, the surface asphalt 21a of the asphalt road surface 21 is continuously cut and removed by running the cutting device main body 51 while radiating the microwave 22. In addition, in FIG. 4, 21b is an inner layer asphalt.

[0006]

However, there are the following problems when cutting the asphalt road surface as described above. Since the asphalt road surface 21 has a low microwave absorptivity, it takes time to heat. Therefore, the implementation time was long. Since the asphalt road surface 21 has a high permeability to the microwaves 22, the inner layer asphalt 21b is heated. Therefore, a great amount of waste is generated in the heating energy. The above problem becomes more remarkable as the degree of deterioration of the asphalt road surface 21 becomes more remarkable. Therefore, if the deterioration degree varies, the temperature of the asphalt road surface 21 also varies.
For this reason, not only the surface layer asphalt 21a is very difficult to cut, but also the blade 56a of the cutting machine 56 may be damaged.

[0007]

In order to solve the above-mentioned problems, the first invention is to radiate an electromagnetic wave to the asphalt road surface to heat and soften the asphalt road surface, and then cut the surface asphalt. In the method of cutting an asphalt road surface, water is sprayed on the asphalt road surface before the emission of the electromagnetic waves.

The method for cutting an asphalt road surface according to the second invention is characterized in that sand is sprayed on the asphalt road surface before the spraying of the water in the first invention.

A method for cutting an asphalt road surface according to a third invention is characterized in that a crack is formed in the surface asphalt on the asphalt road surface before the sand is sprayed in the second invention.

A method of cutting an asphalt road surface according to a fourth aspect of the present invention is characterized in that the asphalt road surface is pressed after the water is sprayed in the third aspect of the invention.

A fifth aspect of the present invention is a self-propelled cutting device body, and electromagnetic wave radiating means provided on the cutting device body for heating and softening the asphalt road surface by radiating electromagnetic waves to the asphalt road surface. In an asphalt road surface cutting device provided with the cutting device body, and a cutting means for cutting the surface layer asphalt of the softened asphalt road surface, before the emission of the electromagnetic wave by the electromagnetic wave emission means, water on the asphalt road surface The cutting device body is provided with a sprinkling means for spraying.

In the asphalt road surface cutting device according to a sixth aspect of the present invention, before the water sprinkling by the water sprinkling means according to the fifth aspect of the present invention, sand cutting means for spraying sand on the asphalt road surface is provided in the cutting device body. It is characterized by

A cutting device for an asphalt road surface according to a seventh invention comprises a crack forming means for forming a crack in the surface asphalt on the asphalt road surface before the sand is sprayed by the sand spraying means in the sixth invention. It is provided in the cutting device body.

The cutting device for an asphalt road surface according to an eighth aspect of the invention is characterized in that the cutting device body is provided with a pressing means for pressing the asphalt road surface after water is sprayed by the sprinkling means according to the seventh invention. To do.

A cutting device for an asphalt road surface according to a ninth aspect of the invention is a water tank in which the water sprinkling means according to any one of the fifth to eighth aspects of the invention is loaded on the cutting device body, and water is stored inside. The water spray nozzle is disposed below the cutting device body, and sprays water from the water tank toward the asphalt road surface.

A cutting device for an asphalt road surface according to a tenth aspect of the present invention is a sand tank in which the sand spraying means according to any one of the sixth to eighth aspects of the invention is loaded on the cutting device main body, and sand is stored inside. And a sand spraying nozzle disposed on the front side of the water spraying nozzle in the traveling direction of the cutting device body and spraying sand from the sand tank toward the asphalt road surface.

In the asphalt road surface cutting device according to the tenth aspect of the invention, the crack forming means of the seventh or eighth aspect of the invention is arranged on the front side in the traveling direction of the cutting device body of the sand spray nozzle, A plurality of cylindrical rotating drums that can rotate as the cutting device body travels, and a plurality of standing drums are provided on the outer peripheral surface of the rotating drum, and bite into the surface layer asphalt on the asphalt road surface as the rotating drums rotate. It is characterized by comprising a projection blade that forms a crack in the surface layer asphalt.

A cutting device for an asphalt road surface according to a twelfth aspect of the invention is the cutting device body according to the eighth aspect, wherein the pressing means is arranged on the rear side of the water spray nozzle in the traveling direction of the cutting device body. It is characterized in that it is provided with a cylindrical pressing roller that rotates in accordance with the above and presses the asphalt road surface.

[0019]

According to the asphalt road surface cutting method of the first aspect of the present invention configured as described above, water is sprayed on the asphalt road surface before the emission of electromagnetic waves so that most of the electromagnetic waves are absorbed by the water. . Water that has absorbed electromagnetic waves heats and softens the asphalt road surface. Therefore, most of the electromagnetic waves are used for heating the asphalt road surface.

According to the asphalt road surface cutting method of the second aspect of the present invention, the water is absorbed by the sand and held by spraying the sand on the asphalt road surface before the water is sprayed. Therefore, the water is distributed around the surface asphalt so that it spreads without being accumulated on the surface of the asphalt road surface, and most of the electromagnetic waves are used for heating the surface asphalt.

According to the asphalt road surface cutting method of the third invention, the sand and water are allowed to enter the inside of the surface asphalt by forming cracks in the surface asphalt before the sand is sprayed. Therefore, the surface asphalt is entirely heated from its surface and inside.

According to the asphalt road surface cutting method of the fourth aspect of the present invention, after spraying water, by pressing the asphalt road surface, the sand on the surface of the asphalt road surface is evenly spread and further pushed into the cracks. For this reason, water spreads evenly over the surface of the asphalt road surface and further penetrates into the inside of the cracks, so that the heating efficiency of the surface layer asphalt is further improved.

According to the asphalt road surface cutting device of the fifth aspect of the invention, after the water sprinkling means sprays water on the asphalt road surface, the electromagnetic wave irradiating means emits electromagnetic waves to the asphalt road surface, so most of the electromagnetic waves are water. Is absorbed by and heats the water. The heated water heats and softens the asphalt road surface. Therefore, most of the electromagnetic waves are used for heating asphalt.

According to the cutting device for an asphalt road surface of the sixth invention, the sand sprinkling means sprays sand on the asphalt road surface before the sprinkling means sprays water on the asphalt road surface. , Absorbed by sand and retained. For this reason, since the water stays around the surface asphalt and is distributed so as to spread without being accumulated on the surface of the asphalt road surface, most of the electromagnetic waves are used for heating the surface asphalt.

According to the asphalt road surface cutting device of the seventh aspect of the invention, since the crack forming ton forms cracks on the surface asphalt before the sand spraying means sprays sand on the asphalt road surface, the sand spraying means Water from the sand and sprinklers gets inside the surface asphalt. Therefore, the surface asphalt is entirely heated from its surface and inside.

According to the asphalt road surface cutting device of the eighth invention, since the pressing means presses the asphalt road surface before the water sprinkling means sprays water on the asphalt road surface, the sand on the surface of the asphalt road surface is evenly spread, It is pushed further into the crack. For this reason, water spreads evenly over the surface of the asphalt road surface and further penetrates into the inside of the cracks, so that the heating efficiency of the surface layer asphalt is further improved.

According to the asphalt road surface cutting device of the ninth invention, the water stored in the water tank is sprayed from the water spray nozzle toward the asphalt road surface.

According to the asphalt road surface cutting device of the tenth aspect of the invention, the sand accumulated in the sand tank is sprayed from the sand spray nozzle before being sprayed on the asphalt road surface.

According to the asphalt road surface cutting device of the tenth aspect of the invention, the rotary drum rotates as the cutting device body travels, and as the rotary drum rotates, the protruding blade bites into the surface asphalt and cracks. After the formation of sand, sand and water are sprayed from the sand spray nozzle and the water spray nozzle onto the asphalt road surface.

According to the asphalt road surface cutting device of the twelfth invention, the pressing roller rotates as the cutting device body travels, and presses the sand and water scattered on the asphalt road surface.

[0031]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for cutting an asphalt road surface and a cutting apparatus therefor according to the present invention will be described with reference to FIGS. 1 is a schematic configuration diagram of the cutting device, FIG.
Is an enlarged view of the main part.

As shown in FIG. 1, a microwave generator 4 for generating a microwave, which is an electromagnetic wave, is mounted on a loading platform 1b of a self-propelled truck vehicle type cutting device body 1. The microwave generator 4 is electrically connected to the generator 3 loaded on the carrier 1b. The microwave generator 4 and the generator 3 are electrically connected to the operation panel 2 loaded on the loading platform 1b.

Further, as shown in FIGS. 1 and 2, a microwave 22 is provided on the lower portion of the cutting device body 1 asphalt road surface 2.
A microwave radiating antenna 5 for radiating toward 1 is provided, and the microwave radiating antenna 5 is connected to the microwave generator 4. The periphery of the microwave radiating antenna 5 is covered with an enclosure 7.
In this embodiment, the microwave generator 4, the microwave radiating antenna 5, the enclosure 7 and the like constitute electromagnetic wave radiating means.

As shown in FIGS. 1 and 2, a cutting machine 6 having a blade 6a for cutting the surface asphalt 21a of the asphalt road surface 21 is provided on the rear side of the cutting apparatus body 1 of the microwave radiation antenna 5. , The operation panel 2
Surface asphalt 21 to be cut by operating
The blade 6a can be set at a position corresponding to the depth of a. In addition, in this embodiment, the cutting means is constituted by the cutting machine 6 and the like.

As shown in FIGS. 1 and 2, on the rear side of the cutting machine body of the cutting machine 6, the cut surface asphalt 21 is cut.
A unloader 8 for unloading a to the rear of the cutting device body 1 is provided, and the surface layer asphalt 21 unloaded by the unloader 8 is provided.
a is a dump truck 60 located behind the cutting device body 1.
It is designed to be loaded onto and transported. In addition, in FIG. 1, 1a is a driver's cab and 21b is an inner layer asphalt in FIG.

On the other hand, as shown in FIGS. 1 and 2, on the front side of the cutting apparatus body 1 of the microwave radiating antenna 5, sprinkling water is connected to a water tank (not shown) mounted on the loading platform 1b of the cutting apparatus body 1. A nozzle 11 is provided, and the water 23 stored in the water tank is sprayed from the water spray nozzle 11 toward the asphalt road surface 21 by operating the operation panel 2. In other words, the asphalt road surface 21 is exposed to water 2 before the radiation of the microwave 22.
3 is sprinkled. In the present embodiment, the water tank, the water spray nozzle 11 and the like constitute a water spray means.

As shown in FIGS. 1 and 2, on the front side of the cutting device body 1 of the water sprinkling nozzle 1, the loading platform 1 of the cutting device body 1 is provided.
A sand spraying nozzle 12 connected to a sand tank (not shown) loaded in b is provided. By operating the operation panel 2, the sand 24 accumulated in the sand tank is transferred from the sand spraying nozzle 12 to the asphalt road surface. It will be sprayed toward 21. That is, the sand 24 is sprayed on the asphalt road surface 21 before the spraying of the water 23. In the present embodiment, the sand tank, the sand spray nozzle 12 and the like constitute the sand spray means.

As shown in FIGS. 1 and 2, the sand spray nozzle 12
At the front side of the cutting device body 1 of FIG.
3 is rotatably supported, and this rotating drum 13
Can be moved in the vertical direction by operating the operation panel 2. On the outer peripheral surface of the rotating drum 13, a plurality of protruding blades 14 that bite into the surface layer asphalt 21a of the asphalt road surface 21 are provided upright.

Therefore, the operation panel 2 is operated to rotate the rotary drum 1.
When 3 is moved downward and brought into pressure contact with the asphalt road surface 21, the protruding blade 14 bites into the surface layer asphalt 21a to form a bite mark 21c and a crack 21d, and the cutting device body 1
When the cutting machine main body 1 runs, the rotating drum 13 rotates, and as the rotating drum 13 rotates,
The protruding blade 14 continuously forms the bite mark 21c and the crack 21d on the surface layer asphalt 21a.

As a result, the asphalt road surface 21 is
Before the sand 24 is sprayed, the bite marks 21c and the cracks 21d are formed. In this embodiment, the rotary drum 1
3, the protruding blade 14 and the like constitute a crack forming means.

As shown in FIGS. 1 and 2, a cylindrical pressing roller 15 is rotatably supported between the microwave radiating antenna 5 and the water spray nozzle 11. The pressing roller 15 is an operation panel. By operating 2, it is possible to move vertically. Therefore, when the operating device 2 is operated and the pressing roller 15 is moved downward to be pressed against the asphalt road surface 21 and then the cutting device body 1 is made to travel, the pressing roller 15 rotates as the cutting device body 1 runs. Then, the asphalt road surface 21 is pressed.

As a result, the sand 24 and the water 23 are sprayed on the asphalt road surface 21 and then pressed before the microwaves 22 are radiated. In this embodiment, the pressing roller 15 or the like constitutes the pressing means.

A method of cutting an asphalt road surface with such a cutting device will be described below. The operation panel 2 is operated to operate the power generator 3 to rotate the rotating drum 13 and the pressing roller 15.
Is pressed against the asphalt road surface 21. Rotating drum 13
Has a protrusion blade 14 on the outer peripheral surface of the surface asphalt 21a
It bites into and forms a bite mark 21c and a crack. next,
When the cutting device body 1 travels, the rotating drum 13 rotates as the cutting device body 1 travels, and the projecting blades 14 cause the bite marks 21c and the cracks 21d on the surface asphalt 21a as the rotating drum 13 rotates. Are continuously formed.

Then, the operation panel 2 is operated to spray the sand 24 in the sand tank and the water 23 in the water tank from the sand spray nozzle 12 and the spray nozzle 11 toward the asphalt road surface 21, respectively. The scattered sand 24 forms a layer on the surface of the asphalt road surface 21 and also the bite marks 21.
c and the inside of the crack 21d. Water sprinkled 23
Is absorbed and held by the surface of the asphalt road surface 21, the bite marks 21c, and the sand 24 inside the cracks 21d. Therefore, the water 23 stays around the surface asphalt 21a, is distributed so as to spread without being accumulated on the surface of the asphalt road surface 21, and enters the inside of the surface asphalt 21a.

As the cutting device body 1 travels,
The pressing roller 15 rotates to press the asphalt road surface 21 on which the sand 24 and the water 23 are sprinkled. The pressing roller 15 is provided with sand 24 containing water on the surface of the asphalt road surface 21.
Evenly spread the above-mentioned bite marks 21c and cracks 2
It can be pushed further into the inside of 1d. Therefore, the water 23
Together with the sand 24, it evenly spreads over the surface of the asphalt road surface 21, and further penetrates into the inside of the surface layer asphalt 21a. Further, the excess water 23 remaining on the surface of the asphalt road surface 21 is pushed into the inside of the minute cracks 21 in which the sand 24 cannot enter or is repelled by the pressure, so that the asphalt road surface 21
Mostly removed from the surface of.

When the pressing process of the pressing roller 15 is started, the operation panel 2 is operated to operate the microwave generator 4, and the microwave radiating antenna 5 radiates the microwave 22 toward the asphalt road surface 21. . Most of the microwaves 22 are absorbed by the surface of the asphalt road surface 21, the water 23 inside the bite marks 21c and the cracks 21d. The water 23 that has absorbed the microwaves 22 generates heat and uniformly heats and softens the surface asphalt 21a from the surface and inside. That is, most of the microwaves 22 can be efficiently used for heating the surface layer asphalt 21a.

After the asphalt road surface 21 is heated by the microwave 22 described above, the operation panel 2 is operated to set the blade 6a of the cutting machine 6 at a predetermined position. As the cutting device body 1 travels, the blade 6a of the cutting machine 6
Easily cuts the softened surface asphalt 21a.

The cut surface layer asphalt 21a is carried out to the rear of the cutting device body 1 by the carry-out machine 8 and loaded on the dump truck 60. In this way, the asphalt road surface 21 is cut.

Therefore, according to the method of cutting an asphalt road surface and the cutting apparatus therefor, the following effects can be obtained.

By spraying the water 23 on the asphalt road surface 21, most of the microwaves 22 are absorbed by the water 23, so that most of the energy of the microwaves 22 can be used for heating the asphalt road surface 21. Therefore, the heating time of the asphalt road surface 21 is significantly shortened,
Enforcement time can be significantly reduced.

By spraying sand 24 on the asphalt road surface 21, the water 23 is absorbed and retained by the sand 24. Therefore, the water 23 is retained around the surface asphalt 21a and is not accumulated on the surface of the asphalt road surface. Can be spread out. For this reason,
Since most of the energy of the microwave 22 can be used for heating the surface layer asphalt 21a, the energy of the microwave 22 can be effectively used.

The bite mark 21c on the surface asphalt 21a
And by forming cracks 21d, sand 24 and water 2
Since 3 penetrates not only the surface of the asphalt road surface 21 but also inside the surface layer asphalt 21a, the surface layer asphalt 21a can be entirely heated from the surface and the inside. Therefore, the heating condition of the surface asphalt 21a does not vary, and the surface asphalt 21a
Is very easy to cut, and the blade 6a of the cutting machine 6 is not damaged.

Sand 2 scattered on the asphalt road surface 21
4 and water 23, sand 24 and water 23
Can be spread evenly over the asphalt road surface 21 and not only be pushed further into the bite marks 21c and the cracks 21d, but also the remaining excess water 23 can be almost removed from the surface of the asphalt road surface 21.
Therefore, the heating efficiency of the surface layer asphalt 21a is further improved.

[0054]

In the method and apparatus for cutting an asphalt road surface according to the present invention, by spraying water on the asphalt road surface before the radiation of the electromagnetic wave, the electromagnetic wave is absorbed by the water and the asphalt road surface is cut through the water. Since it is heated and softened, most of the electromagnetic wave energy can be used for heating the asphalt road surface. For this reason, the heating time of the asphalt road surface can be greatly shortened, and the execution time can be greatly shortened.

Before water is sprayed, sand is sprayed on the asphalt road surface so that the sand absorbs and holds the water, so that the water is retained around the surface asphalt and accumulated on the surface of the asphalt road surface. Since it is distributed so that it spreads without causing it, most of the electromagnetic wave energy can be used for heating the surface asphalt. Therefore, the energy of electromagnetic waves can be effectively used.

Before the sand is sprayed, cracks are formed in the surface asphalt to allow the sand and water to penetrate not only to the surface of the asphalt road surface but also to the inside of the surface asphalt, so that the surface asphalt is covered on the surface and inside. Since the whole is heated from above, the surface asphalt can be uniformly softened without causing variations in the heating condition of the surface asphalt. Therefore, the surface asphalt can be cut very easily.

After spraying water, by pressing the asphalt road surface, the sand is spread evenly on the surface of the asphalt road surface and pushed further into the cracks, so that water is evenly spread over the surface of the asphalt road surface and the It can be further penetrated inside. Therefore, the heating efficiency of the surface layer asphalt is further improved.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of a cutting device for an asphalt road surface according to the present invention.

FIG. 2 is an enlarged view of a main part thereof.

FIG. 3 is a schematic configuration diagram of a conventional asphalt road surface cutting device.

FIG. 4 is an enlarged view of the main part.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cutting device main body 4 Microwave generator 5 Microwave radiation antenna 6 Cutting machine 6a Blade 11 Water sprinkling nozzle 12 Sand sprinkling nozzle 13 Rotating drum 14 Projection blade 15 Pressing roller 21 Asphalt road surface 21a Surface layer asphalt 21c Bites 21d Crack 22 Microwave 23 water 24 sand

Claims (12)

[Claims] 1. A method for cutting an asphalt road surface, which comprises cutting an asphalt road surface by radiating electromagnetic waves to the asphalt road surface to heat and soften the asphalt road surface, and before the radiation of the electromagnetic wave, the asphalt road surface is cut. A method for cutting an asphalt road surface characterized by spraying water. 2. The asphalt road surface cutting method according to claim 1, wherein sand is sprayed on the asphalt road surface before the water spraying. 3. The method for cutting an asphalt road surface according to claim 2, wherein a crack is formed in the surface asphalt of the asphalt road surface before the sand is sprayed. 4. A method for cutting an asphalt road surface, which comprises pressing the asphalt road surface after spraying the water. 5. A self-propelled cutting device main body, an electromagnetic wave radiating means provided on the cutting device main body for heating and softening the asphalt road surface by emitting electromagnetic waves to the asphalt road surface, and the cutting device main body. A cutting device for asphalt road surface provided with a cutting means for cutting the surface layer asphalt of the softened asphalt road surface, before the emission of the electromagnetic wave by the electromagnetic wave emission means, a sprinkling means for spraying water on the asphalt road surface A cutting device for an asphalt road surface, which is provided in the cutting device body. 6. The cutting device for an asphalt road surface according to claim 5, wherein a sand spraying device for spraying sand on the asphalt road surface is provided in the cutting device body before water spraying by the water spraying device. 7. Before spraying sand by the sand spraying means,
7. The asphalt road surface cutting device according to claim 6, wherein the cutting device body is provided with a crack forming means for forming a crack in the surface layer asphalt of the asphalt road surface. 8. The cutting device for an asphalt road surface according to claim 7, wherein the cutting device main body is provided with a pressing device for pressing the asphalt road surface after the water spraying by the water spraying device. 9. The water sprinkling means is mounted on the cutting device main body and stores a water therein, and is disposed below the cutting device main body, and sprays water from the water tank toward the asphalt road surface. The asphalt road surface cutting device according to claim 5, further comprising a water spray nozzle. 10. A sand tank in which the sand sprinkling means is loaded on the cutting device body and stores sand therein, and a sand tank arranged in front of the water spray nozzle in the traveling direction of the cutting device body. 9. A cutting device for an asphalt road surface according to any one of claims 6 to 8, further comprising: a sand spraying nozzle for spraying sand toward the asphalt road surface. 11. A columnar rotary drum, wherein the crack forming means is disposed on the front side of the sand spraying nozzle in the traveling direction of the cutting device body, and is rotatable as the cutting device body travels, and the rotating drum. 8. A plurality of projection blades are provided upright on the outer peripheral surface of the asphalt, and projecting blades that bite into the surface layer asphalt of the asphalt road surface and form cracks in the surface layer asphalt as the rotating drum rotates.
Or the asphalt road surface cutting device described in 8. 12. A columnar pressing roller, wherein the pressing means is disposed on the rear side of the water spray nozzle in the traveling direction of the cutting device body and rotates with the traveling of the cutting device body to press the asphalt road surface. The asphalt road surface cutting device according to claim 8, wherein the cutting device is provided.