JP3973620B2 - Demining vehicle - Google Patents

Description

  The present invention relates to a landmine removal vehicle that digs up a landmine together with earth and sand and explodes or crushes it in a landmine buried area.

  In recent years, many landmines have been buried all over the world. Efficient removal of this landmine is an urgent issue worldwide.

  Conventionally, as a device to remove landmines buried in the ground, the ground is dug up with a rotating excavation drum, and earth and sand mixed with landmines is sent to a belt conveyor provided behind the excavation drum, and the earth and sand conveyed on the belt conveyor There has been proposed a structure in which a mine is adsorbed and removed by a magnet provided above a belt conveyor (see, for example, Patent Document 1).

However, an apparatus having such a structure does not include a structure for actively detonating landmines in the apparatus during operation of the apparatus. Therefore, it is necessary to take out the landmine adsorbed by the magnet to the outside and then perform the detonation treatment. This makes it difficult to efficiently perform landmine treatment.
JP 2001-66099 A

  The problem to be solved by the present invention is that in an operating vehicle, the mined mines can be actively detonated, the work load of the subsequent mining detonation processing can be reduced, and this enables efficient landmine disposal. It is to provide such a demining vehicle.

  It is another object of the present invention to provide a mine removal vehicle having a structure in which a large external force due to blast pressure is difficult to be applied to a predetermined member of a vehicle even when a mine is detonated.

In order to solve the above-mentioned problems, a mine removal vehicle according to the present invention has a plurality of excavation bits on the outer periphery, excavates the ground while rotating clockwise when viewed from the left side in the traveling direction , and explodes or crushes the mine. A demining vehicle including a drilling drum and a drum cover covering a portion from the front to the upper side of the drilling drum, the enormous amount of enormous volume at the front of the drum cover toward the front of the demining vehicle A part is formed, and the internal space of the enormous part is formed as a landmine storage space for exploding landmines excavated by the excavation drum.

In order to solve the above-mentioned problem, another mine removal vehicle according to the present invention has a plurality of excavation bits on the outer periphery, excavates the ground while rotating clockwise when viewed from the left in the traveling direction , and explodes the mine. Alternatively, a mine removal vehicle comprising a drilling drum to be crushed and a drum cover covering a portion from the front to the top of the drilling drum, the drum cover being openable and closing, the drum cover being locked in a fully closed state And a detachable locking mechanism.

In order to solve the above-mentioned problem, another mine removal vehicle according to the present invention has a plurality of excavation bits on the outer peripheral portion, excavates the ground while rotating clockwise as viewed from the left in the traveling direction , and A demining vehicle comprising an excavating drum that explodes or crushes and a drum cover that covers a portion from the front to the upper side of the excavating drum, wherein the excavating drum is disposed on an outer periphery of the excavating drum in a radial direction of the excavating drum. An additional bit is provided inside the bit, and the additional bit is provided adjacent to the excavation bit .

Further, in order to solve the above-mentioned problem, another mine removal vehicle according to the present invention has a plurality of bit strings of a plurality of bits on the outer peripheral portion, excavates the ground while rotating clockwise as viewed from the left in the traveling direction , A mine removal vehicle comprising a drilling drum that explodes or crushes mines and a drum cover that covers a portion from the front to the top of the drilling drum, the outer periphery of the drilling drum, A blocking plate is provided between two adjacent bit strings;
An inclined surface is formed on the upper end surface of the blocking plate, and the inclined surface is inclined so that the rear side is higher than the front side in the forward rotation direction of the excavating drum .

  In the present invention in which the mine storage space is provided, the mined mines are stirred together with the earth and sand in the mine storage space. While being agitated like that, the chances of coming into contact with the bit increase and it becomes easier to detonate. Therefore, the work burden of the subsequent landmine explosion process can be reduced.

  In the present invention provided with the lock mechanism, it is possible to eliminate a large force due to the blast pressure directly acting on the actuator for opening and closing the drum cover.

  Further, in the present invention in which the additional bit is provided, the mine has an opportunity to contact not only the excavation bit but also the additional bit, so that the opportunity for the mine to detonate increases. Therefore, the work burden of the subsequent landmine explosion process can be reduced.

  Also, in the present invention provided with a blocking plate, it is possible to make it difficult for landmines to get caught between bit strings, and it is easier to discharge landmines stuck between bit strings, thereby increasing the chances of mine detonation. Can do. Therefore, the work burden of the subsequent landmine explosion process can be reduced.

  In the mine removal vehicle of the present invention, when providing a mine storage space, it is preferable to further form a plurality of hole portions on the upper surface and / or side surface of the enormous portion. This is because the blast pressure can be released to the outside through the hole.

  Further, it is preferable to provide a counter bit in a direction substantially opposite to the excavation bit in the mine storage space. This is because there are more opportunities for detonation.

  In addition, it is preferable to provide a prevention plate for closing the space between the tip of the enormous portion and the ground surface, and to pivotally support the prevention plate near the end of the enormous portion. This is because landmines and rocks can be prevented from flying forward.

  In the landmine removal vehicle of the present invention, when the lock mechanism is provided, it is preferable that the actuator for opening and closing the drum cover is also used as an actuator for engaging and disengaging the lock mechanism. . This is because the number of required actuators can be reduced.

  The lock mechanism includes a first engagement portion provided on a drum support member that supports the excavation drum, an engagement state in which the lock mechanism is engaged with the first engagement portion, and a release state in which the engagement state is released. And a second engaging portion provided on the drum cover, and the actuator can shift the second engaging portion between the engaged state and the released state. Good.

  Further, the actuator may be configured to allow the second engagement portion to transition between the engaged state and the released state while the drum cover is kept in the fully closed state.

  The actuator is a hydraulic cylinder that is interposed between the drum support member and the drum cover, the tip of the hydraulic cylinder is connected to the drum cover via the connecting member, and the connecting member also functions as the second engaging portion. The second engaging portion is engaged when the hydraulic cylinder is extended to the first length, and the second engaging portion is released when the hydraulic cylinder is shortened to the second length shorter than the first length. The drum cover may be opened when the hydraulic cylinder becomes shorter than the second length.

  Further, the first engaging portion is a flange portion, the connecting member is a rod-shaped member, and the rod-shaped member penetrates a long hole formed in the drum cover, whereby the tip end portion of the hydraulic cylinder is coupled to the drum cover. When the rod-shaped member moves along the elongated hole due to the expansion and contraction of the cylinder and the hydraulic cylinder reaches the first length, the rod-shaped member is positioned at a position where the rod-shaped member engages with the flange in the elongated hole, and the hydraulic cylinder is When the length becomes two, the rod-shaped member is located at a position where the engagement with the flange portion is released in the elongated hole, and the hydraulic cylinder is further shortened from the second length, so that the rod-shaped member is It may be configured such that the drum cover can be opened by abutting on one side and applying a driving force of a hydraulic cylinder to the drum cover.

In addition, in the mine removal vehicle of the present invention, when the additional bit is provided, it is preferable that the additional bit is provided adjacent to the excavation bit. This is because there is an opportunity to detonate the landmine that escapes to the side of the excavation bit without detonating with an additional bit.

  Further, in the mine removal vehicle of the present invention, when the blocking plate is provided, an inclined surface is further formed on the upper end surface of the blocking plate, and this inclined surface is more than the front side in the forward rotation direction of the excavating drum. It is desirable to incline so that the rear side is higher. This is because landmines can be discharged from between bit strings on an inclined surface.

  Further, a blocking plate may be provided so as to be in a non-parallel state with respect to the bit string.

  Further, the extending direction of the bit string may be inclined with respect to the circumferential direction of the excavating drum, and the extending direction of the blocking plate may substantially coincide with the circumferential direction of the excavating drum.

  Hereinafter, a landmine removal vehicle according to an embodiment of the present invention will be described with reference to the drawings. First, a schematic configuration of the mine removal vehicle A will be described with reference to FIG.

  FIG. 1 is a view of a demining vehicle (hereinafter sometimes simply referred to as “vehicle”) A, (a) is a plan view thereof, and (b) is a side view thereof.

  The mine removal vehicle A is mainly composed of a vehicle body 1, an arm 7, an excavation drum 20, and a belt conveyor 11.

  The vehicle body 1 is configured by attaching various equipment to a body frame (not shown). Specifically, the vehicle main body 1 includes a cab 2, a front wheel 3, a rear wheel 4 and the like having a driver's seat therein. The vehicle body 1 also includes an engine device (not shown) serving as a power source for traveling the vehicle, rotating the excavating drum 20, driving the hydraulic cylinder, and the like.

  The arm 7 is swingably attached to the vehicle body 1. The base end of the arm 7 is pivotally supported by the vehicle body 1. An excavation drum 20 is attached to the tip of the arm 7 via a drum support member 15. Further, a hydraulic cylinder 8 is interposed between a position below the pivot point of the arm 7 in the vehicle main body 1 and an intermediate portion of the arm 7. By driving the hydraulic cylinder 8, the arm 7 swings with respect to the vehicle body 1, whereby the excavation drum 20 is displaced in the vertical direction. In FIG. 1B, a state in which the arm 7 is lifted upward by driving the hydraulic cylinder 8 is indicated by a virtual line.

  The excavation drum 20 is rotatably attached to a drum support member 15 fixed to the distal end portion of the arm 7. The excavation drum 20 is attached so as to be rotated in the forward and reverse directions by a hydraulic motor (not shown). The rotational driving force of the excavation drum 20 is given by a power source (engine device) arranged in the vehicle body 1. “Forward rotation” of the excavation drum 20 means that the excavation drum 20 rotates clockwise in FIG. 1B, and “reverse rotation” means that the excavation drum 20 rotates counterclockwise in FIG. It is to be. Hereinafter, unless otherwise specified, “rotation” of the excavating drum means “forward rotation”.

  The belt conveyor 11 is provided behind the excavating drum 20. This belt conveyor 11 carries the mine fragments and the excavated earth and sand exploded or crushed by the excavating drum 20 on it, and conveys them to the rear side. As understood from FIG. 1A, the mine removal vehicle A has two belt conveyors 11. These two belt conveyors 11 are arranged side by side.

  As understood from FIG. 1B, the belt conveyor 11 is suspended from the arm 7 via the support member 10 and the hydraulic cylinder 9. By driving the hydraulic cylinder 9, the angle of the belt conveyor 11 with respect to the arm 7 can be changed. That is, the hydraulic cylinder 9 functions as posture changing means for changing the posture of the belt conveyor 11 with respect to the arm 7.

  In addition, the mine removal vehicle A includes a drum cover 40 that covers the excavating drum 20 in a predetermined angle range, an arm posture holding device 12 that slides in contact with the ground, a bucket 13 provided below the belt conveyor 11, and the like. The drum cover 40 is also necessary for guiding the earth and sand mine excavated by the excavating drum 20 to the belt conveyor 11 behind it.

  FIG. 2 is an enlarged view of the excavation drum 20 and its peripheral portion of the side view of the mine removal vehicle A.

  The excavation drum 20 includes a cylindrical drum main body, a plurality of excavation bits 22, a plurality of additional bits 23, and a plurality of blocking plates 31 fixed to the outer peripheral surface thereof. The tip shape of the excavation bit 22 is substantially conical. This excavation bit 22 functions as an excavation blade in the excavation drum 20. The tip shape of the additional bit 23 is also substantially conical.

  The demining vehicle A includes a drum cover 40 that covers a portion of the excavation drum 20 from the front to the top. The drum cover 40 is swingably attached to the drum support member 15. A pivot fulcrum 41 for pivotally supporting the drum cover 40 on the drum support member 15 is formed at the base end of the drum cover 40. Further, a hydraulic cylinder 70 as an actuator for opening and closing the drum cover 40 is interposed between a position above the pivot support point 41 in the drum support member 15 and an intermediate portion of the drum cover 40.

  The drum support member 15 has a flange portion 80 as a first engagement portion. The flange 80 has a shape whose tip is bent at a substantially right angle.

  Further, the front half of the drum cover forms an enormous portion 44 enlarging toward the front of the vehicle A. Further, a prevention plate 60 is attached to the tip of the enormous portion 44, that is, the tip of the drum cover 40. The prevention plate 60 is pivotally supported at the tip end portion of the drum cover 40 by a pivot support point 61. The pivot fulcrum 61 is located at the proximal end of the prevention plate 60.

  The enormous part 44 is provided for the purpose of facilitating the detonation of the landmines.

  The state of the drum cover 40 illustrated in FIG. 2 is a close state (fully closed state) in which the drum cover 40 is closest to the surface of the excavation drum 20. In this proximity state (fully closed state), a drum cover side contact portion (not shown) provided on the drum cover 40 and a drum support member side contact portion (not shown) provided on the drum support member 15 are provided. ) So that the drum cover 40 cannot be displaced further downward. That is, these both contact portions define the lowest position of the drum cover 40. When the drum cover 40 is in an opened state, both contact portions are separated from each other.

  FIG. 3 is a view showing the inside of the enormous portion 44 together with the excavating drum 20. As can be understood from this figure, a mine storage space 45 in which excavated earth and sand and landmines accumulate is formed inside the enormous portion 44. As described above, the excavation drum 20 is provided with the excavation bit 22 and the additional bit 23. Both bits (the excavation bit 22 and the additional bit 23) are provided so as to be adjacent to each other. The additional bit 23 is provided inside the excavating bit 22 in the radial direction of the excavating drum 20. Therefore, the excavation bit 22 mainly contributes to the excavation of the ground. Of course, the excavation bit 22 often crushes and detonates mines, but even if the mine that abuts the excavation bit 22 is led to the side of the excavation bit 22 without crushing or detonating, The additional bit 23 located next to the excavation bit 22 is often crushed and detonated. The additional bit 23 is provided mainly to increase the chances of mine fragmentation and detonation.

  A plurality of counter bits 51 are provided inside the enormous portion 44 so as to face the excavation bit 22 and the additional bit 23. Landmines excavated by the excavating drum 20 are stirred together with earth and sand in the mine storage space 45. This increases the chance that the mine detonator contacts the excavation bit 22, the additional bit 23, and the counter bit 51. If a mine is detonated in the mine storage space 45, it is not necessary to perform an explosion process later, so that the mine disposal can be made more efficient.

  The counter bit 51 is a bit that does not contribute to excavation, but has many opportunities to come into contact with landmines in the mine storage space 45, and particularly contributes to the destruction and detonation of landmines.

  In FIG. 3, symbols B1, B2, and B3 indicate landmines. Mine B1 buried in a relatively deep place is considered to be often detonated by the excavation bit 22. Mine B2 buried in a relatively shallow place is often detonated by the additional bit 23. The mine B3 excavated and guided to the mine storage space 45 is detonated by the excavation bit 22, the additional bit 23 and the counter bit 51.

  The prevention plate 60 closes the space between the tip of the mine storage space 45 and the ground surface T. The prevention plate 60 prevents the detonated mine fragments and the earth and sand blown away by the detonation from scattering in front of the vehicle A.

  As described above, the mine storage space 45 is provided in order to make the mine explode easily. When a mine explodes here (the mine storage space 45), the drum cover 40 receives a blast pressure. When the opportunity to receive this blast pressure increases, the drum cover 40 and its peripheral members receive a large external force, and the life thereof is shortened. Therefore, in this vehicle A, various measures are taken so that the drum cover 40 and its peripheral members do not receive a large external force even if the opportunity to receive the blast pressure increases. This will be described below.

  First, the hole formed in the enormous portion 44 will be described.

  FIG. 4 is a diagram of the drum cover 40 and the like when viewed from the direction of the arrow X in FIG. 2, and mainly shows the right half of the enormous portion 44. 4 is a center line in the left-right direction of the vehicle A. The left half of the drum cover 40 has substantially the same structure as the right half.

  The front half of the drum cover 40, that is, the enormous portion 44, is mainly formed by a plurality of ribs 46 extending in the front-rear direction of the vehicle A and a rib 46 extending in the left-right direction of the vehicle A and intersecting the ribs 46 at substantially right angles. A horizontal plate 47 fixed to 46 is used. The ribs 46 and the horizontal plates 47 are combined in a lattice shape, and therefore a large number of holes 48 are formed on the upper surface of the enormous portion 44. The hatched portion in the figure is the horizontal plate 47 etc. passed between the ribs 46. Therefore, the hatched portion in the figure is not a hole.

  A large number of hole portions 48 are formed in the enormous portion 44. The reason why many holes 48 are formed in this way is to make it easy to open the blast pressure to the outside of the enormous portion 44. Thereby, it is possible to prevent an excessive external force from acting on the drum cover 40 due to the blast pressure. The hole 48 is preferably formed in a size and shape that does not allow landmines to pass through.

  In FIG. 4, a large number of circles S are represented. This circle S indicates the position of the counter bit 51 attached inside the enormous portion 44. In this way, a large number of counter bits 51 are attached to the inside of the enormous portion 44 to increase the opportunity to crush and detonate landmines as much as possible. The blast pressure due to the initiation is released by the hole 48. In particular, the counter bit 51 faces the direction facing the excavation bit 22 and the additional bit 23. Therefore, the excavation bit 22 and the additional bit 23 are suitable for crushing and detonating landmines that are difficult to crush and detonate.

  Various shapes can be considered for the shape of the hole formed in the enormous portion 44 of the drum cover 40.

  FIG. 5 shows an example of a hole that can be formed in the enormous portion 44.

  In the example of FIG. 5A, the upper surface of the enormous portion 44 is configured by assembling band-like metal plates in a lattice pattern, and therefore a large number of hole portions 48 are formed. Further, a large number of elliptical holes 49 are formed on the side surface 50 of the enormous portion 44. With these holes 48 and 49, when a mine detonates inside the huge part 44 (mine mine space 45), the blast pressure can be released to the outside without scattering landmines or large rocks. . Therefore, the external force due to the blast pressure acting on the drum cover 40 can be reduced.

  In the example of FIG. 5B, a large number of slit-like holes 48 extending in the front-rear direction of the vehicle A are formed on the upper surface of the enormous portion 44. Similarly to the example of FIG. 5A, a large number of elliptical holes 49 are formed on the side surface 50 of the enormous portion 44. These holes 48 and 49 also release the blast pressure to the outside without causing landmines or large rocks to scatter outside when a mine detonates inside the huge part 44 (mine mine space 45). External force acting on the cover 40 can be reduced.

  Next, the operation of the prevention plate 60 will be described.

  FIG. 6 is a longitudinal sectional view of the enormous portion 44 and its peripheral members. As described above, the prevention plate 60 is pivotally supported at the distal end portion of the enormous portion 44 by the pivot support point 61. Therefore, the prevention plate 60 can swing within a predetermined angle range. FIG. 6 shows two ground surfaces T1 and T2. The ground surface T1 indicated by a solid line is the ground surface when the excavation depth by the excavation drum 20 is relatively shallow, and the ground surface T2 indicated by an imaginary line is the ground surface when the excavation depth by the excavation drum 20 is relatively deep. It is.

  The tip of the prevention plate 60 drawn with a solid line is in contact with the ground surface T1. The tip of the prevention plate 60 drawn with a virtual line is in contact with the ground surface T2. In this way, even when the excavation depth varies, the prevention plate 60 is displaced in angle so that the tip of the prevention plate 60 comes into contact with the ground surface due to its own weight. Therefore, even if a land mine explodes in the enormous portion 44, it is possible to prevent mine fragments and earth and sand from being scattered in front of the vehicle A due to the blast pressure.

  If the angle of the prevention plate 60 is fixed so that it cannot be displaced at all with respect to the enormous portion 44, a large gap will be formed between the prevention plate 60 and the ground surface, or the prevention plate 60 will sink into the ground. It is assumed that the situation will end up. If a large gap is generated between the prevention plate 60 and the ground surface, landmines or large rocks may be blown forward or spilled from the gap. In addition, if the prevention plate 60 sinks into the ground, the vehicle A may be prevented from moving forward.

  However, in this embodiment, since the prevention plate 60 is pivotally supported by the pivotal fulcrum 61 at the tip end portion of the enormous portion 44, such a situation does not occur.

  Next, the lock mechanism of the drum cover 40 will be described.

  Therefore, first, the structure of the hydraulic cylinder 70 will be described in detail.

  FIG. 7 is a view showing the structure of the hydraulic cylinder 70. Reference numeral 72 denotes a rod of the hydraulic cylinder 70. A square bar 74 as a bar-like member is attached to the tip of the rod 72 via a bracket 73. As will be described later, the square bar 74 also functions as a second engaging portion that engages with the flange portion 80, and also functions as a connecting member that connects the tip portion of the hydraulic cylinder 70 and the drum cover 40. . In FIG. 7, a rectangular end surface of the square bar 74 appears. The hydraulic cylinder 70 is pivotally supported on the drum support member 15 by a pivot support 71. The pivot fulcrum 71 is located at the proximal end of the hydraulic cylinder 70.

  The drum cover 40 can be opened and closed by driving the hydraulic cylinder 70 to extend and contract. As a result, the drum cover 40 takes a close state (fully closed state) close to the surface of the excavation drum 20 or takes a separated state away from the surface of the excavation drum 20.

  Referring to FIG. 4 again, no hole is formed in the rear half of the drum cover 40. In the rear half of the drum cover 40, a plurality of ribs 42 extending in the front-rear direction of the vehicle A are arranged in parallel. The rib 42 is formed with a rectangular hole which is a long hole, and a square bar 74 passes through the rib 42 through the rectangular hole. Therefore, it can be said that the square bar 74 is provided on the drum cover 40. The square bar 74 can be displaced in the longitudinal direction along the rectangular hole.

  FIG. 8 is a side view showing the drum cover 40 and its peripheral members. The lock mechanism for the drum cover 40, which is constituted by the rectangular hole 43, the square rod 74, the flange portion 80, etc., will be described with reference to FIG. As described above, the collar portion 80 functions as a first engagement portion, and the square bar 74 functions as a second engagement portion.

  The state of the drum cover 40 in FIG. 8 is a close state (fully closed state) in which the drum cover 40 is closest to the excavation drum 20. The longitudinal direction of the rectangular hole 43 substantially coincides with the expansion / contraction direction of the hydraulic cylinder 70. In the state in which the hydraulic cylinder 70 is extended to the maximum, the square bar 74 is in a position drawn by a solid line in the drawing. The length of the hydraulic cylinder 70 in this state is referred to as a first length for convenience. At this time, the square bar 74 is located in the vicinity of the distal end portion in the rectangular hole 43, and the flange 80 is located immediately above the square bar 74. For this reason, the square bar 74 (second engagement portion) engages with the flange portion 80 (first engagement portion). When the square bar 74 is in this engagement position, even if an external force acts to open the drum cover 40 in the proximity state when a mine detonates in the mine storage space 45, the drum cover 40 does not open. This is because even if the drum cover 40 is to be opened, the upward surface 74a of the square bar 74 abuts on the downward surface 80a of the flange 80, so that the square bar 74 cannot be displaced upward. That is, when the square bar 74 is in the engaged position, the drum cover 40 is locked in the proximity state (fully closed state).

  When the hydraulic cylinder 70 in the most extended state as described above is slightly shortened, the square bar 74 is displaced to the position depicted by the phantom line in the drawing. The length of the hydraulic cylinder 70 in this state is referred to as a second length for convenience. The second length is shorter than the first length. At this time, the square bar 74 is located in the vicinity of the base end portion in the rectangular hole 43, and the collar portion 80 is not located immediately above the square bar 74. That is, the engagement between the square bar 74 (second engagement portion) and the flange portion 80 (first engagement portion) is released. When the square bar 74 is in this release position, if an external force (for example, the blast pressure of a mine detonated in the mine storage space 45) is applied to open the drum cover 40 in the close state (fully closed state), the hydraulic pressure The drum cover 40 opens while the cylinder 70 is shortened. This is because the square bar 74 cannot be engaged with the flange 80, and the drum cover 40 cannot be locked in the close state (fully closed state). Then, when a mine detonates in the mine storage space 45, the drum cover 40 is opened and adjusted by receiving the blast pressure, and detonated mine fragments and large rocks are easily scattered outside. At this time, since a large force for forcibly shortening the hydraulic cylinder 70 is applied, its life is shortened.

  As can be understood from this, when it is desired to keep the drum cover 40 in a close state (fully closed state), that is, when attempting to detonate a land mine while excavating the ground surface, the hydraulic cylinder 70 is In a stretched state, the square bar 74 and the flange 80 are preferably engaged. Then, the drum cover 40 is locked in the close state (fully closed state), and the drum cover is not opened and closed, and a large external force does not act on the hydraulic cylinder 70.

  If the rock bitten between the excavation drum 20 and the drum cover 40 has stopped moving, the drum cover 40 must be opened and then removed. In addition, when attempting to excavate the ground that rises at a steep angle from a flat surface, it is necessary to advance the vehicle A after opening the drum cover. To open the drum cover 40 in such a case, the hydraulic cylinder 70 may be simply shortened. If the hydraulic cylinder 70 is shortened only until the square bar 74 reaches the release position (the position indicated by the phantom line in FIG. 8), the drum cover 40 is not opened at all and remains fully closed. . When the hydraulic cylinder 70 is further shortened from this state, the square bar 74 comes into contact with the base end side of the rectangular hole 43 and the force of the hydraulic cylinder 70 acts on the drum cover 40, so that the drum cover 40 starts to open. . At this time, the drum cover 40 is smoothly opened without the square bar 74 being caught by the flange 80.

  Thus, the hydraulic cylinder 70 in this embodiment not only functions as an actuator for opening and closing the drum cover 40, but also locks the drum cover 40 in the close state (fully closed state) to that state. It also functions as an actuator of the mechanism (lock mechanism constituted by the flange 80, the square bar 74, etc.).

  That is, in this embodiment, it is not necessary to provide a dedicated actuator for driving the lock mechanism.

  Next, the operation of the blocking plate 31 will be described.

  Referring again to FIG. 3, a number of blocking plates 31 are provided on the peripheral surface (drum main body peripheral surface) 21 a of the drum main body 21.

  FIG. 9 is a perspective view of the blocking plate 31 and the like. The blocking plate 31 is attached to the drum main body circumferential surface 21a via the pedestal 32. An inclined surface 31 a is formed on the upper end surface of the blocking plate 31. The inclined surface 31a is inclined so that the rear side is higher than the front side in the rotation (forward rotation) direction of the excavation drum 20. The flat surface 31b is continuous with the rear end of the inclined surface 31a.

  FIG. 10 is a plan view when the cylindrical drum body peripheral surface 21a is developed in a planar shape. The vertical direction in FIG. 10 corresponds to the circumferential direction of the drum main body 21, and the horizontal direction in FIG. 10 corresponds to the axial direction of the drum main body 21. The arrow Y in the figure indicates the direction in which the drum body peripheral surface 21a moves relative to the excavation surface.

  As can be understood from FIG. 10, the excavation bit 22 and the additional bit 23 are arranged close to the left and right to form a “bit pair”. A large number of the bit pairs form a column at an angle of approximately 30 degrees with respect to the circumferential direction (vertical direction in FIG. 10). This sequence is called a “bit sequence”. In FIG. 10, rhombic regions L1 and L2 indicated by broken lines are shown. The region L1 is provided with a bit string composed of 7 bit pairs, and the region L2 is provided with a bit string composed of 13 bit pairs. Such a space formed between two bit strings is called a “pocket”.

  During excavation, earth and sand and land mines are particularly likely to enter this pocket, and land mines that have entered here are not easily expelled from the pocket. Therefore, in the present embodiment, the blocking plate 31 prevents the mine from entering the pocket, makes it easier to discharge the mine stuck in the pocket, and makes it easier to crush and detonate the mine. Yes.

  The blocking plate 31 extends in a direction substantially coinciding with the circumferential direction of the drum body 21 (up and down method in FIG. 10). That is, the blocking plate 31 is provided so as to be non-parallel to the bit string. A plurality of blocking plates 31 are provided at equal intervals in the pocket.

  If the blocking plate 31 is provided in the pocket, the landmine is blocked by this and it is difficult to enter the pocket. In other words, the blocking plate makes it difficult for landmines to get stuck in the pocket. It also prevents landmines stuck in the pocket from continuing to move along the pocket.

  Assume that a mine has entered a point P (a predetermined point in the pocket) in the figure. Then, due to the rotation of the drum body 21, the landmine is driven downward in the figure and comes into contact with the blocking plate 31 (p).

  When this landmine is placed on the inclined surface of the blocking plate 31 (p), it is gradually transferred outward in the radial direction of the drum body 21 in accordance with the inclination. That is, it is discharged from the pocket.

  In addition, if a landmine abuts against the side surface of the blocking plate 31 (p), the landmine is gradually guided to the additional bit 23 (p) along the side surface of the blocking plate 31 (p) and finally added. There is a high possibility of being crushed and detonated by bit 23 (p).

  In addition, in this embodiment, since the landmine space 45 is provided as described above, even if a landmine once gets into this pocket during excavation, the landmine space 45 is moved from here to the landmine space 45. May spill into reservoir space 45). In other words, the mine storage space 45 also has a function of discharging the mine that is stuck in the pocket.

  In the above, the landmine removal vehicle A which is one embodiment of the present invention has been described with reference to the drawings.

  Since the landmine removal vehicle of the present application can be used, efficient landmine disposal can be performed, which can be used in the technical field of landmine disposal.

It is a figure of a landmine removal vehicle, (a) is the top view, (b) is the side view. It is the figure which expanded the excavation drum and its peripheral part of the side view of a mine removal vehicle. It is the figure which represented the inside of a huge part with an excavation drum. FIG. 3 is a view of a drum cover or the like when viewed from the direction of an arrow X in FIG. 2, and mainly shows a right half portion of a huge portion. It is a figure which shows the example of the hole which can be formed in a huge part. It is a longitudinal cross-sectional view of a huge part and its peripheral member. It is a figure which shows the structure of a hydraulic cylinder. It is a side view which shows a drum cover and its peripheral member. It is a perspective view of a blocking plate or the like. It is a top view when the cylindrical drum main body peripheral surface is expand | deployed planarly.

Explanation of symbols

A Demining vehicle B1, B2, B3 Mine T, T1, T2 Ground surface 1 Vehicle body 2 Driver's cab 3 Front wheel 4 Rear wheel 7 Arm 8, 9 Hydraulic cylinder 10 Support member 11 Belt conveyor 12 Arm attitude holding device 13 Bucket 15 Drum Support member 20 Excavation drum 21 Drum main body 21a Drum main body peripheral surface 22 Excavation bit 23 Additional bit 31 Stopping plate 32 Base 40 Drum cover 41 Axis fulcrum 42 Rib 43 Rectangular hole 44 Enlarged part 45 Land mine storage space 46 Rib 47 Horizontal plate 48, 49 Hole 51 Countering bit 60 Preventing plate 61 Pivot fulcrum 70 Hydraulic cylinder 71 Pivot fulcrum 72 Rod 73 Bracket 74 Square bar 80 Hook

Claims (14)

It has a plurality of excavation bits on the outer periphery, and excavates the ground while rotating clockwise when viewed from the left side in the traveling direction , and covers the excavation drum that explodes or crushes mines and the portion from the front to the upper side of the excavation drum A demining vehicle with a drum cover,
In the front part of the drum cover, a huge part is formed enormously in the front direction of the demining vehicle,
A landmine removal vehicle in which the enormous internal space is formed as a landmine storage space for exploding landmines excavated by the excavating drum. The landmine removal vehicle according to claim 1, wherein a plurality of holes are formed in an upper surface and / or a side surface of the enormous portion. The mine removal vehicle according to claim 1 or 2, wherein a counter bit is provided in a direction substantially opposite to the excavation bit in the mine storage space. 4. A preventive plate for closing a gap between the tip of the enormous portion and the ground surface, wherein the preventer plate is pivotally supported in the vicinity of the end of the enormous portion. Demining vehicle described. It has a plurality of excavation bits on the outer periphery, and excavates the ground while rotating clockwise when viewed from the left side in the traveling direction , and covers the excavation drum that explodes or crushes mines and the portion from the front to the upper side of the excavation drum A demining vehicle with a drum cover,
The drum cover can be opened and closed;
A mine removal vehicle further comprising a detachable lock mechanism for locking the drum cover in a fully closed state. 6. The landmine removal vehicle according to claim 5, wherein an actuator for opening and closing the drum cover is also used as an actuator for engaging and disengaging the lock mechanism. A first engagement portion provided on a drum support member for supporting the excavation drum; an engagement state in which the lock mechanism is engaged with the first engagement portion; and a release state in which the engagement state is released. A second engagement portion provided on the drum cover,
The mine removal vehicle according to claim 6, wherein the actuator can shift the second engagement portion between an engaged state and a released state. The mine removal vehicle according to claim 7, wherein the actuator can shift the second engagement portion between an engaged state and a released state while the drum cover is kept in a fully closed state. The actuator is a hydraulic cylinder interposed between the drum support member and the drum cover;
The tip of the hydraulic cylinder is connected to the drum cover via a connecting member;
The connecting member also functions as the second engaging portion;
When the hydraulic cylinder is extended to the first length, the second engagement portion is in the engagement state,
In a state where the hydraulic cylinder is shortened to a second length shorter than the first length, the second engagement portion is in the released state,
The mine removal vehicle according to claim 8, wherein the hydraulic cylinder is further shortened than the second length so that the drum cover can be opened. The first engaging portion is a collar;
The connecting member is a rod-shaped member;
When the rod-shaped member passes through a long hole formed in the drum cover, the tip of the hydraulic cylinder is connected to the drum cover,
By expansion and contraction of the hydraulic cylinder, the rod-shaped member moves along the long hole,
When the hydraulic cylinder reaches the first length, the rod-shaped member is located at a position where it engages with the flange in the elongated hole,
When the hydraulic cylinder reaches the second length, the rod-like member is located at a position where the engagement with the flange portion is released in the long hole,
When the hydraulic cylinder is further shortened than the second length, the rod-shaped member is brought into contact with one side of the elongated hole so that the driving force of the hydraulic cylinder is applied to the drum cover, and the drum cover is opened. The demining vehicle according to claim 9, configured to be capable of It has a plurality of excavation bits on the outer periphery, and excavates the ground while rotating clockwise when viewed from the left side in the traveling direction , and covers the excavation drum that explodes or crushes mines and the portion from the front to the upper side of the excavation drum A demining vehicle with a drum cover,
An additional bit is provided on the outer periphery of the excavating drum on the inner side of the excavating bit in the radial direction of the excavating drum,
A demining vehicle in which the additional bit is provided adjacent to the excavation bit . A drilling drum that has a plurality of bit strings of a plurality of bits on the outer periphery, and that excavates the ground while rotating clockwise when viewed from the left in the traveling direction and explodes or crushes mines, and a portion from the front to the top of the drilling drum A demining vehicle with a drum cover covering
In the outer peripheral portion of the excavation drum, a blocking plate is provided between two adjacent bit rows of the plurality of bit rows,
An inclined surface is formed on the upper end surface of the blocking plate,
The landmine removal vehicle , wherein the inclined surface is inclined so that the rear side is higher than the front side in the forward rotation direction of the excavation drum . The demining vehicle according to claim 12 , wherein the blocking plate is provided so as to be in a non-parallel state with respect to the bit string. The extending direction of the bit string is inclined with respect to the circumferential direction of the excavating drum,
The mine removal vehicle according to claim 13 , wherein the extension direction of the blocking plate substantially coincides with the circumferential direction of the excavation drum.

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