MINE CLEARING VEHICLE

Abstract: A mine clearing vehicle (1) having a milling cutter drum (2) adapted to tear up soil, plant parts, mines, etc. on or within the top soil layer. The milling cutter drum (2) may advantageously be divided into discs (7) provided with teeth (8).

Description: MINE CLEARING VEHICLE The invention relates to a mine clearing vehicle. At war or when war menaces, land areas are often mined to prevent or delay the advance of the enemy. Mining is also used as a terror weapon against the civil population. A military unit advancing over mined area, tries to reduce losses by clearing passages of mines and then advancing along the passages. A known manner to effect mine clearing is first to localize mines by means of known equipment for mine searching and, thereafter, either to detonate or disarm and neutralize them. Another known way to effect mine clearing is to load the ground by means of a mine clearing vehicle in order to make possible hidden mines to detonate. The ground can be loaded by means of movable lugs, claws or drums thumping against the ground in front of the mine clearing vehicle. Another known solution is to provide a mine clearing vehicle with a horizontal rotary shaft to which is attached sections of chain being hurled against the ground in front of the mine clearing vehicle. Equipment of this kind is, of course, built in order to withstand mine explosions and to protect the driver. As long as a war situation prevails, mine fields are seldom completely cleared; it is common that areas remain mined. Years after the conflict is over, they may lie fallow. When it, after a long time becomes actual to clear an area of mines, the area is often overgrown with bushes and smaller trees. An area which for many years has been impossible to use for e.g. agriculture because of mines, often remains unused after mine clearing because the area is overgrown. Overgrowth gives reduced passable conditions and makes, moreover, the mine clearing difficult, either the mines are to be searched and localized or detonated by means of a mine clearing vehicle of a kind known in the art. Overgrowth can to a certain degree shield mines from mine clearing vehicle and prevent mines to be detonated. The object of the invention is to provide a mine clearing vehicle which can neutralize mines, especially in overgrown areas. Also, it is an object that the mine clearing vehicle shall increase the value of use of a mine cleared area through a cultivating effect on the soil and removal of plants in the area concerned. The objects are achieved through features as defined in the following claims. An example of an embodiment of the invention is described with reference to the attached drawings, in which: Figure 1 shows diagrammatically and seen from the side a caterpillar mine clearing vehicle having a milling cutter drum mounted in front of the vehicle; Figure 2 shows diagrammatically and seen from above the same mine clearing vehicle as in figure 1; Figure 3 shows seen from above and on a larger scale a milling cutter drum divided into discs. In figure 1, reference numeral 1 denotes a mine clearing vehicle having a rotary milling cutter drum 2 attached to the mine clearing vehicle 1 with arms 3 assigned a hydraulic power system, not shown, for lifting and lowering the milling cutter drum 2. A hoop 4 is adapted to push against larger plants, e.g. a tree 5, in front of the milling cutter drum 2 , such that the milling cutter drum 2 hits the tree 5 close to the root. A shield 6 intercepts soil and stones hurled out from the rear edge of the milling cutter drum 2. The mine clearing vehicle 1 advances the milling cutter drum 2 with a working depth equal to a few centimetre to typically thirty to fifty centimetre down into the ground, simultaneously as the drum 2 is rotated with a periphery speed of eight to twenty metre per second. Burried mines could explode when they are hit by the milling cutter drum 2. However, experiments have shown that the milling cutter drum 2 of:en damages the mine, and that the detonating composition of the mine is torn loose before it can activate the mine charge. The milling cutter drum 2 is provided with shares or teeth, preferably with a point of hard metal or the like, and soil, roots and mines are chopped to form a top soil layer which, thus, is cultivated and easy to clear of logs and larger branches. A tree 5 will be bent forwardly by means of the hoop 4 and cut near the root. The tree 5 will fall forwardly and, thereafter, be chopped by the milling cutter drum 2. The tree 5 will be pulled rearwardly and in beneath the mine clearing vehicle. Possible remainders from the tree 5 can easily be removed when the area has been cleared of mines. The milling cutter drum 2 may advantageously be divided into discs 7 provided with teeth 8 such as shown in figure 3. A milling cutter disc 2 built up by means of discs 7 , constitutes less air resistance for detonating mines and is, therefore, more resistive. The shield 6 may also be formed in perforated plate or as a grid, so that air pressure from mine explosions will not be damaging. The mine clearing vehicle l may have a driver of its own, or it may be remote-controlled. The milling cutter drum 2 may be attached to the mine clearing vehicle l in many ways.

Claims: C l a i m s 1. A mine clearing vehicle (1) , c h a r a c t e r i z e d i n that the mine clearing vehicle (1) is assigned at least one milling cutter drum (2) adapted to tear up soil, plant parts, mines and other things on or within the upper layer of the soil and, thus, simultaneously acting cultivating on the same. 2. A mine clearing vehicle (1) as set forth in claim 1, c h a r a c t e r i z e d i n that the milling cutter drum (2) is divided into discs (7) provided with teeth (8) . 3. A mine clearing vehicle (1) as set forth in claim 1, c h a r a c t e r i z e d i n that a shield (6) has been disposed in order to intercept soil, stones and other things hurled out from the milling cutter drum (2) . 4. A mine clearing vehicle (1) as set forth in claim 3, c h a r a c t e r i z e d i n that the shield (6) is formed in perforated plate or as a grid, so that air pressure from mine explosions not shall be damaging.

Inventors: HAUGHOM KJELL JANN, OESTHOLM NILS MAGNUS, HAUGHOM, KJELL, JANN, OESTHOLM, NILS, MAGNUS
Applicants: BOFORS AB, HAUGHOM KJELL JANN, OESTHOLM NILS MAGNUS, HAUGHOM, KJELL, JANN, OESTHOLM, NILS, MAGNUS
Application year: 1995
Main classification: F41H11
IPC codes: F41H11