JP2001066099A - Cultivator for removing mine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove mines remaining underground without being exploded efficiently by cultivating the ground surface with digging tools fixed to the outer circumference of digging drums while adjusting the vertical position thereof, carrying dug up mines to a conveyor in the rear and removing them while sorting. SOLUTION: A cultivator 1 has a plurality of digging drums 5 between the left and right front wheels 2a, 2a of a frame 2. The frame 2 is provided with a part for coupling the arm A of a power traveling vehicle through a shaft P and traveling the vehicle forcibly. Front and rear axles 3a, 3b are adjustable vertically through telescopic motion of hydraulic cylinders 9a, 9b. A belt conveyor 20 equipped with a metal mesh or perforated rubber belt is disposed in the rear of the digging drums 5. The digging drums 5 are rotary driven through a hydraulic motor 10 to dig the ground with digging tools provided on the outer circumferential part thereof. Soil and sand carried onto the conveyor 20 are discharged through holes in the belt and remaining mines are sorted and removed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mine-removing tillage device for excavating and removing landmines and unexploded landmines that have been blown up in a landmine buried area.

[0002]

BACKGROUND ART More than 110 million landmines are buried all over the world, and it is said that 24,000 people are killed or injured annually. Moreover, the number of mines removed is said to be only 100,000 / year, which is a major problem worldwide.

There are various types of land mines, such as iron, plastic, wood, bamboo and paper.
10 kg, anti-tank mines 10-200-800k
g. The detonation method includes pressure, pressure release, change in wire tension, approach of electromagnetic waves from a detector, and the like. Some high-grade land mines are detonated by magnetism, sound waves, electromagnetic waves, heat, and the like. The amount of explosives is said to be about 50 to 200 g for anti-personnel mines and about 4 to 10 kg for anti-tank mines. For example, in Cambodia, 99.9% are small antipersonnel mines and have a diameter of 78%.
mm, the total weight is 140 g, and the explosive amount is about 51 g.

[0004] The removal of this type of land mine is an urgent task worldwide, but the removal operation has many difficult conditions and is not yet mechanized. For this reason, conventionally, land mines have been searched for with a metal rod or a metal detector called a prodder, digged up with care, and then processed by blasting or the like. However, the metal detector has a problem that it is inefficient because it also reacts to nails and the like, and it is difficult to detect a mine made of plastic or the like, and there is a problem that excavation is dangerous and inefficient.

In view of the above circumstances, the present inventor has developed a demining machine that can surely and promptly remove land mines, and has already applied for a patent (PCT / JP99 /
01909). This device is very effective because it detonates all explosive mines on the spot while stepping on the ground by mechanical force. After the demining operation is performed, people and vehicles can safely enter the minefield. However, there are still unexploded mines due to rust or breakdown, and sideways mines (30 ° or more tilted). There is a possibility that there are residual mines and unexploded ordnance, such as land mines buried deep by rainwater flow. Therefore, there is a strong demand for a cultivator capable of removing this type of residual land mines.

[0006]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an apparatus capable of excavating and removing a mine remaining for some reason in a minefield after the mine has been blasted and removed.

[0007]

In order to solve the above problems, the present invention employs the following configuration. That is, the mine cultivating tilling device according to the present invention is provided with a digging drum provided with a digging tool on an outer peripheral portion and digging the ground while rotating, and a sediment, land mine, etc. provided at the rear portion of the digging drum and digged by the digging drum A conveyor that receives and transports the rearward, a separation unit that separates land mines transported by the conveyor from earth and sand, a bogie that moves while supporting the excavating drum and the conveyor, and a vertical position of the excavating drum with respect to the bogie. And a vertical position adjusting means that can be adjusted.

The tilling apparatus is configured such that the bogie is pushed (or towed) by a power vehicle or the like, and the excavating drum is rotated in a predetermined direction by adjusting the vertical position of the bogie while moving the bogie. Till the ground with tools and excavate buried unexploded mines with earth and sand. The excavated land mines are sent to the conveyor by the rotation of the drum, and sent to the rear. On the way, the mines are separated and removed from the earth and sand. Thereby, unexploded land mines remaining underground can be efficiently removed.

[0009]

Embodiments of the present invention will be described below in detail. 1 to 3 exemplify an embodiment of a tilling apparatus according to the present invention. The tilling apparatus 1 includes a frame 2 having front wheels 2a, 2a and rear wheels 2b, 2b. A plurality of excavating drums 5,... Are attached to the space between the front wheels so as to overlap each other in the lateral direction. As shown in FIG. 3, the plurality of excavating drums have a common rotating shaft 5a, and are integrally rotated by a common power. The number of the excavating drums 5 is six in the illustrated example, but may be more or less. The frame 2 is provided with a connecting portion, and an arm A of a separately prepared power traveling vehicle (not shown) is connected to this portion by a shaft (pin) P to be forcibly driven by the power traveling vehicle. . Note that the arm A is capable of turning in the up / down and left / right directions and moving back and forth. By operating the arm A, the up / down, left / right, and front / back positions of the tillage device 1 can be appropriately adjusted.

The axle 3a of the front wheels 2a, 2a and the rear wheels 2b, 2
The axle 3b is attached to the ends of links 7a and 7b which are attached to the frame 2 so that the shafts 4a and 4b can rotate up and down, and hydraulic cylinders 9a and 9 serving as up and down adjustment means.
The vertical position can be adjusted by the expansion and contraction of b.

The frame 2 is provided with hydraulic motors 10, 10 for rotating the excavating drum 5, and a pulley 11 attached to an output shaft of the motor and a rotating shaft 5 of the excavating drum 5.
A belt 13 is hung between the pulley 12 and the pulley 12 attached to the pulley 12a. Since the rotating shaft 5a of the excavating drum 5 in the illustrated example is supported by the bearing members 6a and 6b attached to the frame 2, the vertical position with respect to the frame 2 does not change, and the vertical position of the excavating drum with respect to the ground is adjusted by adjusting the vertical position of the wheels. Is to be adjusted. The vertical position of the excavating drum with respect to the frame may be adjustable.

Side plates 15, 15 extending rearward from the rear of the excavating drum are provided on both left and right sides of the excavating drum. These both side plates are fixed to the left and right frames, and are also fixed to each other by a left-right beam 17 provided at the upper part.

Behind the excavating drum 5, a belt conveyor 2 is provided.
0 is provided. The belt 21 of the belt conveyor 20 is a belt having a number of holes large enough to prevent earth and sand from falling and land mines and unexploded ordnance from falling, and a wire mesh belt,
A perforated rubber belt or the like is used. The belt conveyor 20 is inclined so that the front side is low and the rear side is high, and the start end of the belt conveyor 20 is sunk under the rear part of the excavating drum 5. The rollers 20a and 20b before and after the conveyor are supported by the frame 2 and rotate by the power transmitted from the motor 22 via the pulleys and the belt to rotate the belt 21.
To circulate.

An upper buffer plate 25 supported on the side plates 15 and 15 by a shaft 23 so as to be swingable back and forth, and a spring 26
An obliquely downward lower cushioning plate 27 urged upward by the arrow is provided. Both of these buffer plates 25 and 27 are plate members made of rubber having appropriate strength, the upper buffer plate 25 is for gently receiving landmines falling on the slope of the drum, and the lower buffer plate 27 is Mine is upper buffer plate 2
The shock absorbing when falling from 5 to the conveyor belt is buffered.

On the upper side of the belt conveyor 20, there are provided dam plates 30,... Connecting both side plates. This weir plate 30 is for preventing a large lump from passing therethrough.
a has a fork shape, and a gap with the upper surface of the conveyor belt is provided with a gap for the mine B to pass therethrough. However, this gap becomes smaller toward the downstream side, and the mine or unexploded ordnance ( (φ25 mm or more) is not released. A strong magnet M is provided between the weir plate 30a and the weir plate 30b (plate shape) to attract unexploded ordnance, iron pieces, and iron mine.

Excavating tools 40 are attached to the excavating drum 5. The excavating tool 40 includes a blade body 41 facing the outer peripheral surface from the inside of the excavating drum through the opening 5b, and a hitting device 42 for hitting or vibrating the blade body.
The blade body 41 has, for example, a fork shape or a plow shape, and is attached to a steel rod 42a of a hitting device 42, so that when an explosion occurs, the attachment body breaks.
FIG. 4 shows a main part of a known call pick that can be used as the hitting device 42. When a steel rod (pick steel) 42a is pushed into the blade body 41 by applying pressure such as soil, large and small balls 42b, 42c is pushed up and piston 4
A blow by 2e is performed. 42d is a retaining spring. As this type of device, a known hydraulic breaker that is hit when a blade body is pressed against rock or the like can be used. The hydraulic pressure or pneumatic pressure for this is sent from outside to the inside of the rotating drum by hoses 43 and 44 via a swivel 45 as shown in FIG. In the illustrated example, two sets of excavators 40 are provided so as to face each other in the diameter direction of the excavation drum 5, but three or more sets of excavators may be provided at appropriate intervals. The striking device is for facilitating excavation in hardened soil, land with plant roots, and the like, and can be omitted in sandy land and the like.

Next, a method of using the tillage device 1 will be described. The tillage device 1 is mainly used for removing a residual mine in a minefield after blasting the mine. In use, the tilling device is carried into a desired work place by a power traveling vehicle or the like, and the height of the front wheel and the rear wheel is adjusted so that the excavation drum does not easily fall below the ground. In this state, the excavating drum is advanced by the power vehicle while rotating in the direction of the arrow.

Then, the ground is excavated by the excavation tool with the rotation of the excavation drum. In this case, the blade 4 of the drilling tool
1 is hit, so that excavation can be performed efficiently even when the ground is solidified. In addition, the excavating drum rotates in the direction of the arrow in the figure and is tilled by a so-called up-cut method, so that earth and sand, stone blocks, tree roots, land mines, and the like can be scooped up well. Unexploded mines are scooped from below or from the side, so there is less opportunity for explosions.

[0019] The soil and the like picked up by the excavation drum are:
After being lifted by the rotation of the drum, it is transferred to the rear conveyor 20. In this case, landmines and the like are received by the flexible buffer plates 25 and 27, so that there is little chance of explosion. The soil and the like transferred to the conveyor 20 are sent rearward by the conveyor, but the weir plate 30 is located above the belt.
Is provided, so that large tree roots, stone blocks, and the like are blocked by the dam plate, and separated from fine earth and sand. At this time, the large earth mass is restrained by the fork of the weir plate and the hole of the conveyor belt, rubbed and finely, falls from the hole of the belt, and is discharged from the belt.

On the other hand, excavated land mines, unexploded ordnance, iron pieces, tree roots and the like remain on the conveyor 20 and may be removed manually.

In the illustrated example, the tilling apparatus 1 is configured to be run by pushing (towing is also possible) by another power vehicle, but it goes without saying that the tilling apparatus 1 may be a self-propelled vehicle. Further, it is preferable that a monitoring television camera is installed at an appropriate position of the frame 2, and a video signal captured by this camera is transmitted to the rear to be used for remote control.

Land mines, tree roots, etc. may roll in front of the drum. Stop the machine and remove it manually, or place a rubber-finned sideways conveyor in front of the drum and place them on the side. There is also an excluding means (not shown).

[0023]

As is apparent from the above description, the mine cultivating tilling device according to the present invention cultivates a predetermined depth while moving the mine field after blasting the mine. Can be successfully removed even if remains. That is, it can be cultivated safely and quickly.

[Brief description of the drawings]

FIG. 1 is a side view illustrating an embodiment of the present invention.

FIG. 2 is a side view showing a part of the broken surface.

FIG. 3 is a front view thereof.

FIG. 4 is a sectional view of a main part of a call pick as a hitting device.

FIG. 5 is a sectional view of a swivel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tilling device 2 Frame 2a Front wheel 2b Rear wheel 5 Excavation drum 10 Hydraulic motor 15 Side plate 20 Conveyor 21 Belt 22 Motor 25 Upper buffer plate 27 Lower buffer plate 30 Weir plate 40 Drilling tool 41 Blade body 42 Hitting device

Claims (4)

[Claims] An excavating drum provided with an excavating tool on an outer peripheral portion for excavating the ground while rotating, and a conveyor provided at a rear portion of the excavating drum for receiving earth and sand, land mines, and the like excavated by the excavating drum and transporting the same to the rear. A separation unit for separating land mines conveyed by the conveyor from earth and sand, a bogie that supports and moves the excavating drum and the conveyor, and a vertical position adjustment that can adjust a vertical position of the excavating drum with respect to the bogie. And a means for removing landmines. 2. The mine cultivating tilling device according to claim 1, wherein the conveyor is a belt conveyor provided with a mesh belt or a perforated belt. 3. The mine cultivating tilling device according to claim 1, further comprising a hitting device for hitting or vibrating the digging tool. 4. The mine removal tilling device according to claim 1, wherein a magnet for attracting the mine is attached to the conveyor.