JP3177737B2 - Land mine disposal equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to land mine processing capable of efficiently processing anti-personnel land mines.

[0002]

2. Description of the Related Art Conventionally, all landmines for human use are manually processed. Specifically, they first detect one by one using a mine detector, often similar to a metal detector fixed to a long rod. If detected, water the water, soften the soil and check the mine situation. After removing the soil with a brush or the like, the mines can be seen, and then explosives are used to induce the explosion.

[0003] As described above, the conventional processing of land mines is performed one by one depending on the experience and can of a person having specialized skills. In addition, anti-personnel mines, which are small plastic mines, are washed away by rain during the rainy season, and are often buried in paddy fields as floating mines, making them difficult to detect.

Accordingly, Japanese Patent Laid-Open No. 7-71898 discloses that an endless vehicle, in particular, a bulldozer is used for mine sweeping, thereby enabling efficient sweeping without exposure to the dangers associated with mine sweeping. There is an endless tracked vehicle.

It comprises a front structure which is pivotally fixed to a hydraulically or pneumatically operated cylinder piston unit and possibly to a tracked vehicle. A box which is operatively connected to the tracked vehicle via a frame and which is at least partially open at the front and at the rear in the direction of travel, which box is essentially provided therein with respect to the direction of travel; It is provided with a milling drum that is also provided in the horizontal direction, and is particularly driven to rotate by hydraulic pressure.

According to this tracked vehicle, as a mine sweeper, the milling drum rotates in the direction opposite to the running direction of the vehicle, and sends the mine forward of the milling drum, where the mine is blown under a pressure load. There is when it comes to.

As another mine disposal machine, as disclosed in Japanese Patent Application Laid-Open No. 8-320199, as a device provided at the tip of an undulating and refractible arm of a heavy-duty vehicle used with a shovel or the like, a superalloy is mounted on a horizontal rotary drive shaft. A number of Karazao-style hammer bodies have been proposed.

In the mine clearing machine disclosed in Japanese Unexamined Patent Publication No. 8-320199, a Karazao-type hammer made of superalloy is horizontally rotated at the tip of an undulating and refractible arm of a heavy equipment vehicle used with a shovel such as a backhoe. A large number of the drive shafts are arranged side by side, and when they are brought close to the ground and the rotary drive shaft is driven to rotate, the hammer hits the ground. And even if the mine is buried, the hammer body also crushes the mine, and the mine that is crushed by the hammer body from the exterior of the case or the like does not explode greatly but is broken into pieces and destroyed.

Since there is no large explosion, there is no damage to the apparatus including the hammer body. In addition, by gradually moving the arm and the heavy equipment vehicle, the hammer body is moved along the ground to increase the processing area, but the impact of the hammer body causes the ground to be plowed so as to be suitable for the field. .

[0010]

SUMMARY OF THE INVENTION However, Japanese Patent Laid-Open No. 7-71898
There are several problems with the tracked vehicle of the publication.
It uses bulldozers to clear land mines. First, it is limited to the movement of the bulldozer itself, and it is not possible to change the position of the milling drum that blows up the mine unless the body itself moves forward or turns, so it can be turned around. It does not burn and lacks promptness.

Also, the position of the milling drum and the body of the vehicle that are to blow up the land mines are close to each other, and the driver's seat is dangerous because the driver's seat is close to the position where the land mines are blown up. May be damaged.

Therefore, in the tracked vehicle disclosed in Japanese Patent Application Laid-Open No. 7-71898, the milling drum rotates in the direction opposite to the running direction of the vehicle and sends the mine forward of the milling drum, where the mine is blown under a pressure load. The mine is kept from approaching the vehicle body, but in this case, the excavated earth and sand may be covered on the mine, and the mine may be buried deeply, preventing reliable blasting. Especially in the case of anti-personnel mines, it is installed in a relatively shallow place and can be blasted with a small impact, so the situation is different from anti-tank mines, as in the case of the tracked vehicle of this JP-A 7-71898. It is not suitable to blow the milling drum under pressure.

[0013] Also, since the milling drum is provided with cutting tools and / or crushing tools on the circumferential surface at particularly uniform intervals, these tools catch the mine from below and are transported forward of the milling drum. It is said that in the earth and sand, the milling drum itself blows up the mine by the pressure acting on the mine, and it is not specified what these cutting tools and / or crushing tools are specifically.

On the other hand, in the mine clearing machine disclosed in Japanese Patent Application Laid-Open No. 8-320199, a mechanism for mine clearing is provided at the tip of an undulating and refractible arm of a heavy equipment vehicle used with a shovel or the like such as a backhoe. (Forward) and turning can be combined, and processing can be performed over a wide range by working while turning, and a long reach can be extended to a steep slope or a narrow place where machines can not enter Can work.

[0015] However, this is because a large number of Karazo-style hammer bodies made of a superalloy are arranged side by side on a horizontal rotary drive shaft. When this is brought close to the ground and the rotary drive shaft is driven to rotate, the hammer body hits the ground. Therefore, even if the mine is buried, the hammer body also crushes this mine, and the mine that is crushed by the hammer body from the case or the like does not explode greatly but is broken down into pieces. ,
With such a hammer body, the ability to cut earth and sand is poor, and if a mine is buried even deeper, its performance cannot be exhibited. In particular, as mentioned earlier, anti-personnel mines, which are small plastic mines, are washed away by rain during the rainy season, and are often buried in abandoned paddy fields as floating mines. Many.

There is also a case where the hammer body is buried in the earth and sand and cannot be driven to rotate.

Further, in the land mine disposal machine disclosed in Japanese Patent Application Laid-Open No. 8-320199, it is assumed that the impact of the hammer body causes the ground to be cultivated so as to be suitable for the field, and that the mine is buried in abandoned farmland or unlanded land. Although it is said that the work of cultivating the development land as farmland can be obtained, it is possible to remove shrubs and the like, but cultivation work can hardly be expected because the cutting ability of earth and sand is low as described above.

Next, as for the mine detector, most of the mine detectors are similar to metal detectors fixed on a long rod as described above, so that the work efficiency is poor and the mine detector is in operation even during mine detection work. There is also a lot of danger of touching land mines.

An object of the present invention is to solve the above-mentioned disadvantages of the prior art, and it is possible to perform a combined operation of front (forward) and turning by the movement of the arm.
It can be processed over a wide area, and it can be extended to a wide area even on steep slopes or narrow places where machines can not enter, and it can reliably excavate mines filled with earth and sand It can be cut and destroyed, and in addition to this, it can perform a wide range of work by cutting and crushing grass, bush, land mines, shrubs, stumps, tall trees, etc.It requires a large amount of work, and even after crushing processing, it can efficiently remove debris such as land mines and shrubs An object of the present invention is to provide a mine disposal device that can be used for operations such as well-sorting or leveling and digging.

[0020]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention firstly attaches an attachment side to the tip of an undulating and bendable arm of a heavy-duty vehicle used in a shovel machine such as a backhoe. An attachment attachment / detachment device incorporating a slide mechanism that makes the pin holding interval variable is provided, and a rotary cutter having a cutter bit planted on the peripheral surface of the rotating drum is provided through the attachment attachment / detachment device. The cutter holder is welded to the peripheral surface of the rotating drum, a cutter bit is attached to and detached from the cutter holder, and the cutter can be cut to a depth of about 30 cm or more. The gist is that the soil can be discharged to the opposite side to the traveling direction.

Secondly, the rotary cutter incorporates a left-right rotating mechanism below the connecting portion of the attachment attaching / detaching device. Thirdly, special bulletproof glass is used for the window glass of the driver's seat of the heavy equipment vehicle. Fourth, a guard made of a metal mesh body is provided on the front surface. Fourth, a rotary cutter, a skeleton bucket, and other attachments can be replaced by an attachment attaching / detaching device.
In addition, the gist of the present invention is to attach a sensor unit of a mine detector to an end of an undulating and refracting arm via an attachment attaching / detaching device.

In conventional land mine processing, manual processing is often performed in order to perform 100% complete processing, and there have been problems in terms of worker safety and workability. In addition, many work places have bushes and grasses, which have taken longer to process.

According to the first aspect of the present invention, a rotary cutter is provided at the tip of the arm. The cutter is rotated while turning, the boom arm is operated, and the bush, grass and the like growing on the wasteland are cut and crushed. At the same time, anti-personnel mines buried below the ground surface can be crushed at once. In particular, a rotary cutter that rotates at high speed has a cutter bit planted around the rotating drum and can be cut to a depth of about 30 cm, so even if an antipersonnel mine is buried in the soil, it is dug out and the cutter bit is When touched, the struck anti-personnel mine is deformed, destroying the internal gunpowder series and cutting the electric circuit.

At the next tooth (cutter bit), the antipersonnel mine is caught in the rotary cutter, the case and the lid are separated, and explosives are scattered.

Therefore, the antipersonnel mine of the electric fuse does not explode at all, while the antipersonnel mine of the mechanical fuse only explodes only the fuze and does not explode the main body of the antipersonnel mine. Treated land mines are separated into cases, lids and electric circuit boards and discharged to the ground, and are discharged on the opposite side to the traveling direction, so that mud does not cover and bury the antipersonnel mines .

Further, in the rotary cutter, a cutter holder is welded to a peripheral surface of a rotary drum, and a cutter bit is attached to and detached from the cutter holder. Therefore, when the cutter bit is worn or damaged, it can be replaced.
In addition, the cutter bit is a super alloy long nose type to increase durability and change to a short nose cutter that emphasizes cutting power on hard sites and a mountain shaped tooth that can cope with sand and gravel, etc. And a plurality of types can be selected.

Further, the rotary cutter has high efficiency and high performance by having drive motors on the left and right as a hydraulic motor direct connection type, and requires no 5,000 hours of maintenance and low running cost.

Furthermore, the rotary cutter at the tip of the arm and another attachment, for example, a skeleton bucket, can be easily and quickly replaced.

According to the second aspect of the present invention, in addition to the above-described operation, the rotary cutter is variable in direction by a left-right rotating mechanism, so that fine positioning can be performed, and the rotary cutter is completely extended to the side surface in the road. It is easy to use because it can be processed and the side of a house or the like can be completely processed.

According to the third aspect of the present invention, the special bulletproof glass and the guard can protect the operator from antipersonnel mines and flying objects.

According to the fourth aspect of the present invention, the rotary cutter, the skeleton bucket, and other attachments are exchangeable, so that debris such as land mines and shrubs can be efficiently sorted even after crushing. Alternatively, it is possible to perform operations such as leveling and digging.

According to the fifth aspect of the present invention, even in the case of landmine detection, the sensor unit of the landmine detector is provided at the tip of an undulating and refractible arm of a heavy equipment vehicle used in a shovel machine such as a backhoe. The mine can be detected from a safe position, and the combined movement of the front (forward) and turning is possible by the movement of the arm. By working while turning, it can be detected safely and over a wide range. It can reach a wide area even on steep slopes and narrow places where machines cannot enter. Further, the mine detection device and the mine disposal device can be easily exchanged with the same heavy equipment vehicle by the attachment attaching / detaching device.

[0033]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an overall side view showing a first embodiment of a mine disposal device of the present invention, FIG. 2 is a plan view of the same, and FIG. 3 is a front view of the same.

In the figure, reference numeral 1 denotes a heavy equipment vehicle (base machine) used as a shovel or the like such as a backhoe, which is provided with an up-and-down and bendable arm 2 having a length of about 8 m, as is well known. 3 is a driver's seat (cabin) and 4 is a crawler belt for traveling.
Instead of the crawler belt shown at 24, a wheel type having wheels 25 may be used. The crawler belt 4 is effective on steep slopes, etc.
Increases energy.

The undulating and bendable arm 2 is a boom 2
a, an arm 2b, a boom cylinder 2c, an arm cylinder 2d, and a bucket cylinder 2e. The tip of the link mechanism 5a is provided with a screw handle type slide mechanism 5b that makes the holding interval of the pin 6 on the attachment side variable. Is provided with an attachment attaching / detaching device 5. The attachment attaching / detaching device 5 can be rearranged without pulling out the pin 6 of the attachment, and is called a quick hitch.

A special bulletproof glass 7 of a 27 mm bulletproof laminated sheet of polycarbonate plate is used for the front glass and the floor glass of the window glass of the driver's seat 3 and has a strength approximately 200 times that of ordinary glass. Further, a guard 8 made of a steel net of 50 mm mesh is provided on the front surface.

Although not shown, an iron undercover is provided below the main body and the truck of the heavy equipment vehicle to guard the inside of the machine.

As an apparatus provided at the tip of the undulating and refractible arm 2 via an attachment attaching / detaching apparatus 5, an appropriate space (for example, a drum diameter of φ508 is provided on the peripheral surface of the rotating drum 10 as shown in FIGS. 4 to 6). In this case, a rotary cutter 9 in which a cutter bit 11 is implanted at a pitch of 30.25) is provided.
Coupled to 10 rotation axes.

Further, a cutter bit made of carbon steel is used.
11 rotates the cutter holder 13 as shown in FIG.
The cutter holder 13 is fastened to the cutter holder 13 by bolts 14. The lower end of the cutter bit 11 is a forked portion 11a. This portion is fitted into the central thin portion 13a of the cutter holder 13, and the bolt 14 is passed through. Also,
The cutter holder 13 is large or thick on the rear side in the rotation direction of the rotary cutter 9 to increase the strength, so that bending stress and impact load applied to the cutter bit 11 can be sufficiently received.

In the figure, reference numeral 11b denotes a cemented carbide tip of the cutter bit 11, and the cutter bit 11 is shown in the shape of the cemented carbide tip 11b.
In addition to the flat blade shown in FIG. 12, flat blades of other shapes as shown in FIGS. 13 and 14 and a plurality of types such as a mountain shape can be selected, and can be adapted to the condition of the ground such as bedrock and gravel. .

The rotary cutter 9 has about 3
Approximately two-thirds are stored, and about one-third of the lower side protrudes. As an example, the excavation outer diameter is φ900mm to φ800mm, the number of rotations is 500 to 550rpm, the torque is MAX 128 kg · m, and the cutting speed (tip) is MAX93km. / h to MAX83km / h, excavation power of blade tip 284kg to 31
9 kg, rated pressure 280 kg / cm ^2, rated flow 165-205 l / min, rated output 76.5Kw, mass (cutter 1400kg~
It should be able to cut to at least 30cm or more at 2000kg. This is disclosed in Japanese Unexamined Patent Publication No.
The diameter of the land mine disposal machine of Japanese Patent Publication No.
The excavation depth is more than 6 times.

When the rotary cutter 9 is oriented so that the rotation axis is parallel to the heavy equipment vehicle 1, the rotary cutter 9 rotates counterclockwise as shown by an arrow in FIG. 6, ie, in the traveling direction (forward) of the heavy equipment vehicle 1. And rotate it to the opposite side so that it can be discharged only to the rear.

As another embodiment, as shown in FIGS. 7 to 9, the rotary cutter 9 is provided with an attachment attaching / detaching device 5.
As a rotating shaft mechanism in which the lower side of the pin 6 engaged with the upper frame and the lower frame are connected by a center pin, a left-right rotating mechanism 15 including a motor 15a, sprockets 15b, 15c, and a chain 15d may be incorporated. . This rotation mechanism
15 rotates the rotary cutter 9 left and right by 45 ° as shown in FIGS.

In this manner, the rotary cutter 9 can be further rotated left and right by 45 ° at the tip of the arm 2 which can be raised and lowered and bent freely, and can be raised and bent obliquely forward from the heavy equipment vehicle 1 running on the road. Fine positioning is possible, for example by extending the free arm 2 and arranging the rotary cutter 9 so as to move in parallel along the edge of the road.

The arm 2 that can be raised and lowered and bent freely as described above
At the front end, an attachment attaching / detaching device 5 is provided, and the skeleton bucket 16 having the square structure 16a as shown in FIG. 15 can be replaced by removing the rotary cutter 9, and the illustration is omitted. It is also possible to replace it with an attachment such as another bucket or ripper.

Here, the replacement operation by the attachment attaching / detaching device 5 will be described with reference to FIGS. The slide mechanism 5b includes a movable claw 5c, a lock bar 5d, and a set screw 5e.

For attachment / detachment, with the hydraulic hose on the attachment side removed, the movable claw 5c on the other side fitted to the pin is shrunk to the attachment attaching / detaching device 5 side, and after setting to another pin, the set screw 5e is removed. It is turned by a tool and is moved by a lock bar 5d.

As another application example, as shown in FIG. 16, the undulating and refracting arm 2 itself can be changed to a long one (about 18300 mm) called a super long front.

Next, the usage will be described. The heavy equipment vehicle 1 moves forward and backward by the crawler belt 4 and the wheels 25 and turns. An operator rides on the driver's seat 3 and drives the rotary cutter 9 to move the rotary cutter 9 close to the ground and excavate it by the undulating and refracting arm 2.

At this time, the rotary cutter 9 can also cut and pulverize the bush, grass and the like growing on the wasteland.

The rotary cutter 9 excavates the ground, and this cutter bit 11
Crushes this mine from the exterior of the case and the like. As mentioned earlier, mines crushed in this way do not explode significantly, but are shattered and destroyed.

FIGS. 17 and 20 show an embodiment of the mine exploration apparatus of the present invention, in which a heavy equipment vehicle 1 and an undulating and refractible arm 2 provided with an attachment attaching / detaching apparatus 5 at the tip are provided with the mine exploration apparatus of the present invention. It is the same as the processing apparatus, and replaces the rotary cutter 9 with the sensor unit 17 of the mine detector.
The sensor unit 17 is surrounded by an open hood 18 on the lower surface, and includes a swing cylinder 19.

The sensor of the sensor section 17 is a flux gate type magnetic sensor or a search coil type magnetic sensor. The processing section 20 has a display panel 22a and a speaker 22b as shown in FIG. It is installed in the driver's seat 3 of the vehicle 1, and the presence of land mines is known from changes in sounds and graphs.

Such a magnetic sensor is suitable for detecting a metal, but is not suitable for a mine having many portions made of synthetic resin. Therefore, another sensor, for example, a sensor using a detection signal by an ultrasonic wave or a laser may be used instead or in combination.

As an application example, as shown in FIGS. 22 and 23, spray nozzles 21 are provided near the sensor unit 17, for example, on the left and right lower end surfaces of the hood 18, so that white powder can be sprayed, The machine 22 may be attached and flags may be set on the left and right.

Further, also in the case of use as a mine exploration device, the heavy equipment vehicle 1 may be of a wheel type having wheels 25 instead of crawler tracks as shown in FIG.

The usage is the same as that of the mine disposal device of the present invention.
The heavy equipment vehicle 1 moves forward and backward with the crawler belt 4 and the wheels 25 and turns. An operator rides on the driver's seat 3 and drives it, but moves the sensor unit 17 close to the ground by the undulating and refractible arm 2 to detect land mines.

More specifically, while the sensor section 17 is maintained at about 100 mm above the ground, the undulating and refracting arm 2 is swung horizontally over a 10 m range of the search area.

After exploring the ground once, the undulating and refracting arm 2 is extended by 1 m or the heavy equipment vehicle 1 is advanced without extending the arm. Search left and right until the arm is fully extended.

When the flag raising machine 22 is provided, flags are set up at appropriate intervals in front, rear, left and right as shown in FIG. When the sensor unit 17 finds a mine, it sprays white powder on the location of the found mine.

After the found mine is removed by the mine disposal device of the present invention, the heavy equipment vehicle 1 is moved to the search area again, and the mine search is repeated.

[0062]

As described above, the mine disposal device of the present invention can perform a combined operation of front (forward) and turning by the movement of the arm, not by manual operation. In addition, it can be processed or detected over a wide area, and can be extended over a long reach to a steep slope or a narrow place where no machine can enter.

Regarding land mine disposal, even a land mine for human beings filled with earth and sand can be reliably dug and cut and destroyed. In addition to this, cutting and crushing of grass, bush, land mine, shrub, stump, tall tall tree, etc. Can be used in a wide range of work, and the amount of work is large. Even after crushing, it can be used for efficiently sorting debris such as land mines and shrubs, or for work such as leveling and digging.

[Brief description of the drawings]

FIG. 1 is an overall side view showing one embodiment of a land mine disposal device of the present invention.

FIG. 2 is an overall plan view showing an embodiment of the land mine disposal device of the present invention.

FIG. 3 is an overall front view showing an embodiment of the land mine disposal device of the present invention.

FIG. 4 is a front view showing a first embodiment of a rotary cutter portion of the land mine disposal device of the present invention.

FIG. 5 is a plan view showing a first embodiment of a rotary cutter portion of the land mine disposal device of the present invention.

FIG. 6 is a side view showing a first embodiment of a rotary cutter portion of the land mine disposal device of the present invention.

FIG. 7 is a front view showing a second embodiment of a rotary cutter portion of the land mine disposal device of the present invention.

FIG. 8 is a plan view showing a second embodiment of the rotary cutter portion of the land mine disposal device of the present invention.

FIG. 9 is a side view showing a second embodiment of the rotary cutter portion of the land mine disposal device of the present invention.

FIG. 10 is a left side view of the second embodiment of the rotary cutter portion.
It is a top view of the state turned 45 degrees.

FIG. 11 is a right side view of the second embodiment of the rotary cutter portion.
It is a top view of the state turned 45 degrees.

FIG. 12 is a perspective view of a cutter holder and a cutter bit of the rotary cutter.

FIG. 13 is a perspective view showing another example of the cutter bit of the rotary cutter.

FIG. 14 is a perspective view showing still another example of the cutter bit of the rotary cutter.

FIG. 15 is a perspective view of a skeleton bucket.

FIG. 16 is an overall side view showing another embodiment of the land mine disposal device of the present invention.

FIG. 17 is a side view showing an embodiment of use as a mine detection device of the present invention.

FIG. 18 is a front view showing one embodiment of use as a mine detection device of the present invention.

FIG. 19 is a plan view of a main part showing one embodiment of use as a mine detection device of the present invention.

FIG. 20 is a perspective view showing one embodiment of use as a mine detection device of the present invention.

FIG. 21 is a front view of a processing unit used as a mine detection device of the present invention.

FIG. 22 is a bottom view of a sensor unit used as a mine detection device of the present invention.

FIG. 23 is an explanatory diagram showing an operation of use as a mine detection device of the present invention.

FIG. 24 is an overall side view of a mine disposal device according to the present invention, in which a heavy equipment vehicle is used as another embodiment.

FIG. 25 is an overall side view of another embodiment of a heavy equipment vehicle used as a mine detection device of the present invention.

FIG. 26 is an explanatory view of an extended state of the attachment attaching / detaching device.

FIG. 27 is an explanatory diagram of a contracted state of the attachment attaching / detaching device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Heavy equipment vehicle 2 ... Arm which can be raised and lowered and freely bendable 2a ... Boom 2b ... Arm 2c ... Boom cylinder 2d ... Arm cylinder 2e ... Bucket cylinder 3 ... Driver seat 4 ... Crawler belt 5 ... Attachment attaching / detaching device 5a ... Link mechanism 5b ... Slide mechanism 5c ... movable claw 5d ... lock bar 5e ... set screw 6 ... pin 7 ... special bulletproof glass 8 ... guard 9 ... rotary cutter 10 ... rotary drum 11 ... cutter bit 11a ... bifurcated part 11b ... carbide tip 12 ... drive motor 13 ... Cutter holder 13a ... Central thin part 14 ... Bolt 15 ... Rotating mechanism 15a ... Motor 15b, 15c ... Sprocket 15d ... Chain 16 ... Skeleton bucket 16a ... Square structure 17 ... Sensor part 18 ... Hood 19 ... Cylinder 20 ... Processing part 20a ... Display panel 20b Speaker 21 Spray nozzle 22 Banner 23 Flag 24 Hood 25 Ring

Claims (5)

(57) [Claims] Attachment attachment / detachment device in which a sliding mechanism for changing a holding interval of an attachment side pin at a tip of a link mechanism is provided at a tip end of an undulating and bendable arm of a heavy equipment vehicle used in a shovel machine such as a backhoe. And a rotary cutter having a cutter bit implanted on the peripheral surface of the rotary drum via the attachment attaching / detaching device. The rotary cutter is configured such that a cutter holder is welded to the peripheral surface of the rotary drum, and the cutter bit is attached to the cutter holder. That can be cut and removed to a depth of about 30 cm or more, and has a drive motor on the left and right as a hydraulic motor direct connection type so that it can be discharged on the opposite side to the traveling direction. Characterized mine disposal equipment. 2. The land mine disposal device according to claim 2, wherein the rotary cutter incorporates a left-right rotation mechanism below a connecting portion of the attachment attaching / detaching device. 3. The mine disposal device according to claim 1, wherein a special bulletproof glass is used for a window glass of a driver's seat of the heavy equipment vehicle, and a guard made of a metal net is provided on a front surface thereof. 4. The mine disposal device according to claim 1, wherein the rotary attachment, the skeleton bucket, and another attachment can be exchanged by the attachment attaching / detaching device. 5. The mine disposal device according to claim 1, wherein a sensor unit of the mine detector is attached to an end of the arm which can be raised and lowered and refracted via an attachment attaching / detaching device.