JP2005331122A - Operation mechanism mounting structure for demining device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an operation mechanism mounting structure for a demining device capable of easily mounting and replacing a tire and a crawler as an operation mechanism at a job site, and easily centering the tires and crawler in mounting and replacing them. <P>SOLUTION: In this operation mechanism mounting structure of the demining device 1, a mounting hole 29 opened into the taper shape at its surface side, is formed on the tire 6 or the crawler 2, and a female screw part 23 is mounted on a position of a hub 19 corresponding to the mounting hole 29, and fastened by a fastening bolt 24 by using a spacer 25 having a taper face 27 fitted and engaged with the taper-shaped opening part 30 of the mounting hole 29. <P>COPYRIGHT: (C)2006,JPO&amp;NCIPI

Description

  The present invention relates to an operation mechanism mounting structure for a landmine disposal apparatus, and more particularly to an operation mechanism mounting structure for a landmine disposal apparatus in which the operation mechanism can be easily attached or replaced.

  It is said that over 100 million landmines are currently buried in countries around the world due to international conflicts and civil wars. In view of such circumstances, in recent years, many landmine processing devices for landmine processing (including detection and removal of landmines) have been proposed (see, for example, Patent Document 1 to Patent Document 5).

These land mine disposal devices are usually equipped with various devices for processing land mines such as sensor devices such as metal detectors and manipulators equipped with air hammers for blasting land mines. In addition, these landmine disposal devices are equipped with a crawler such as a bulldozer type or an excavator type for traveling (for example, see Patent Documents 1 and 2), or with a tire (for example, Patent Documents). 3 and 4).
JP 2001-221597 A JP 2001-241895 A JP 2002-5598 A JP 2000-205792 A

  Considering the work environment of such a landmine disposal device, if the landmine is buried in a relatively flat place, the landmine disposal device equipped with tires will be more agile and the working location will be undulating. It is assumed that a crawler will be able to move more accurately if it is a place with a heavy slope or a relatively steep slope. In general, according to the assumption, it is determined what kind of operation mechanism the landmine treatment device is equipped with.

  However, where land mines are actually buried, there are roads, bridges, and other infrastructure, for example, even on the side of the road, even on rough rocks, muddy farmland, or in urban areas. Even if it is destroyed, the working environment is not necessarily uniform even at the same work site. Even if a landmine disposal device that can be equipped with only one type of operation mechanism is brought into such a work site, high work efficiency is not always obtained.

  Therefore, it is desirable that the landmine disposal device can be replaced with an operation mechanism suitable for the work environment at the work site. In this case, it is desirable that not only the replacement can be easily performed, but also the centering of the tire and the crawler with respect to the hub can be easily performed.

  Accordingly, an object of the present invention is to easily attach and replace the operation mechanism at the mine disposal work site, and to easily perform centering of the operation mechanism in the installation and replacement of the operation mechanism. It is to provide an operation mechanism mounting structure for a landmine disposal device.

In order to solve the above-mentioned problem, the operation mechanism mounting structure of the landmine disposal apparatus according to claim 1
An operation mechanism mounting structure of a landmine treatment device for treating landmines buried in the ground,
An operation mechanism provided with a mounting hole having a tapered opening on the surface side;
A hub provided with an internal thread at a position corresponding to the mounting hole of the operating mechanism;
A spacer having a through hole in the center portion and a tapered surface engaging with a tapered opening of the mounting hole of the operating mechanism on the outer peripheral surface;
A fastening bolt that is inserted through the through hole of the spacer and the mounting hole of the operation mechanism and can be screwed into the female thread portion of the hub is provided.

  According to the first aspect of the present invention, the operating mechanism is attached to or removed from the hub by screwing the fastening bolt inserted through the spacer into the female thread portion of the hub. Further, in this attachment or replacement, simply by tightening the fastening bolt, the spacer pushes the tapered opening of the attachment hole of the operation mechanism corresponding to the tapered surface, and the position of the operation mechanism is automatically adjusted.

  According to a second aspect of the present invention, in the operation mechanism mounting structure for a landmine disposal apparatus according to the first aspect, the operation mechanism is a crawler or a tire.

  According to the invention described in claim 2, even in the same landmine treatment site, a crawler is attached in a place where the undulation is severe or a slope is relatively steep, and the place where the landmine is buried is a relatively flat place. If so, replace it with a tire.

  According to a third aspect of the present invention, in the operation mechanism mounting structure of the landmine disposal apparatus according to the first or second aspect, the internal thread portion of the hub is a mounting hole provided in each of the crawler rim and the tire wheel. Are provided on two inner and outer concentric circles having different radii from the center of rotation of the hub.

  According to the third aspect of the present invention, the mounting hole of the crawler rim and the mounting hole of the tire wheel are generally formed on the circumferences of different radii, but the hub corresponds to them. Female threads are provided in position, i.e. on two concentric circles with different radii from the center of rotation of the hub.

  According to a fourth aspect of the present invention, in the operation mechanism mounting structure of the landmine disposal apparatus according to the third aspect, the hub includes an inlay portion protruding in a circular shape around the rotation center on the surface thereof. The inner female screw portion is provided in the spigot portion, and the outer female screw portion is provided in a flange portion around the spigot portion.

  According to the fourth aspect of the present invention, when the operation mechanism is attached to the flange portion, it is possible to perform the attachment by fitting the wheel or rim of the operation mechanism into the protruding inlay portion.

  According to the first aspect of the present invention, since the operating mechanism can be attached or removed by screwing the fastening bolt inserted through the spacer into the female thread portion of the hub, the operating mechanism can be installed at the work site of landmine treatment. And can be exchanged very easily. Also, in this attachment or replacement, just by tightening the fastening bolt, the spacer pushes the tapered opening of the attachment hole of the operation mechanism corresponding to it with its tapered surface, and automatically adjusts the position of the operation mechanism. Centering of the operation mechanism can be performed easily and accurately.

  In addition, the operation mechanism of the mine disposal equipment is damaged by the impact of the explosion of the undulating mine on the ground at the work site and the bolt breaks, but it is possible to tighten the internal thread on the hub with the fastening bolt from the outside. By doing so, even if the fastening bolt 24 is damaged, it can be easily replaced.

  According to the invention described in claim 2, even in the same landmine treatment site, a crawler is attached in a place where the undulation is severe or a slope is relatively steep, and the place where the landmine is buried is a relatively flat place. Therefore, in addition to the effect of the invention described in claim 1, the operation mechanism can be appropriately changed according to the environment of the work site, and the mine can be efficiently removed. Work can be realized.

  According to the invention described in claim 3, the crawler rim mounting hole and the tire wheel mounting hole are generally formed on a circumference having different radii, but the hub has a position corresponding to them. That is, since the internal thread portion is provided on two concentric circles having different radii from the center of rotation of the hub, in addition to the effect of the invention described in the above claims, such a general crawler rim and tire are provided. The wheel can be used as it is. Moreover, since a commercial item etc. can be used as it is, it is cheap and can substitute easily.

  According to the fourth aspect of the present invention, when the operating mechanism is attached to the flange portion of the hub, the wheel or rim of the operating mechanism can be attached so as to be once fitted into the protruding spigot portion of the hub. In addition to the effects of the invention described in the above-mentioned claims, the attachment work is facilitated, and at the same time, by adjusting the shape of the spigot portion, the wheel or rim of the operation mechanism is almost centered at the stage of fitting into the spigot portion. It is also possible to make it a state.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of an operation mechanism mounting structure for a landmine disposal apparatus according to the present invention will be described with reference to the drawings.

  FIG. 1 is a side view showing a landmine disposal device of the present embodiment, and a landmine disposal device 1 of the present embodiment is an unmanned landmine disposal device that allows an operator to perform a processing operation by remote operation. A total of four crawlers 2 are attached as operation mechanisms in front of and behind the vehicle body side surfaces of the landmine disposal apparatus 1 of FIG. In addition, a manipulator 3 that performs landmine processing and a landmine detection sensor 4 that detects landmines are operatively attached to the front of the landmine disposal device 1.

  FIG. 2 is a plan view showing an internal vehicle body structure of the landmine disposal apparatus of FIG. However, FIG. 2 shows the landmine processing apparatus 1 in which a tire 6 is mounted as an operation mechanism instead of the crawler 2 and the manipulator 3, the landmine detection sensor 4, the vehicle body cover 5 and the like shown in FIG.

  The mine treatment apparatus 1 includes two main frames 7 made of square tubes arranged in parallel in the front-rear direction, and several sub-frames made of a square tube or a channel material are provided between the two main frames 7. Frames 8 are arranged in parallel in the left-right direction, and further, a sub-frame 9 extending in the front-rear direction and connecting a plurality of sub-frames 8 is provided. The main frame 7, the sub-frame 8 and the sub-frame 9 are The vehicle body is configured in a ladder shape or partially connected in a lattice shape.

  A hydraulic drive device 12 including a diesel engine 10 and an exhaust duct 11 is disposed at the center of the vehicle body. The hydraulic drive unit 12 transmits the drive of the diesel engine 10 to two hydraulic pumps (not shown) in charge of the left and right tires 6 (or the crawler 2; the same applies hereinafter) by a hydrostatic transmission (HST) method, and further not shown. The four tires 6 are transmitted to four hydraulic motors 13 as driving devices that independently drive the four tires 6 via a hydraulic circuit.

  An axle 15 for transmitting the drive of the hydraulic motor 13 to the crawler 2 is connected to an output shaft 14 of the hydraulic motor 13 via a shaft joint 16 formed of a universal joint. As shown in FIG. 3, the shaft coupling 16 absorbs the eccentricity even when there is a slight eccentricity in the front-rear direction or the vertical direction between the rotation center L1 of the output shaft 14 of the hydraulic motor 13 and the rotation center L2 of the axle 15. Thus, the drive of the output shaft 14 is transmitted to the axle 15.

  The axle 15 is provided so as to penetrate the main frame 7. Specifically, as shown in FIG. 4, the main frame 7 made of a square tube is provided with a bearing 17 in a horizontal direction so as to penetrate both side surfaces of the main frame 7. The axle 15 is inserted. Between the axle 15 and the bearing 17, an oil-free bush 18 is provided in the vicinity of both openings inside and outside the bearing 17.

  A hub 19 is fixed to the outer end of the axle 15. The crawler 2 (see FIG. 1) and the tire 6 (see FIG. 2) are attached to the hub 23 to replace the operation mechanism. .

  As shown in FIG. 5, a circular inlay portion 20 centering on the rotation center L2 of the hub 19 (that is, the rotation center L2 of the axle 15) is provided on the surface of the hub 19 so as to protrude. At the edge of the inlay portion 20, eight internal thread portions 21 having internal threads formed therein are provided on concentric circles centering on the rotation center L2. Further, a flange portion 22 that is one step lower than the spigot portion 20 is provided around the spigot portion 20 on the hub surface. Similarly, the edge portion of the flange portion 22 is also centered on the rotation center L2 of the hub 19. Eight female screw portions 23 are formed on the concentric circles.

  In the present embodiment, the eight female screw portions 21 of the spigot portion 20 are respectively provided at positions corresponding to the mounting holes provided in the rim of the crawler 2, and the eight female screw portions 23 of the flange portion 22 are It is provided at a position corresponding to a mounting hole provided in the wheel of the tire 6.

  A fastening bolt 24 usually used for mounting a crawler or a tire as shown in FIG. 6 is screwed to the inlay portion 20 of the hub 19 and the female screw portions 21 and 23 of the flange portion 22 while being inserted into the spacer 25. It is like that.

  A through hole 26 through which the fastening bolt 24 is inserted is provided at the center of the spacer 25, and no female screw is formed inside the through hole 26. In the present embodiment, the spacer 25 is formed so that the inner diameter of the through hole 26 is substantially the same as the outer diameter of the fastening bolt 24. A tapered surface 27 having a tapered shape is formed on the outer peripheral surface of the spacer 25 opposite to the bolt head.

  As shown in FIG. 7, the mounting hole 29 (see FIG. 7A) of the wheel 28 of the tire 6 and the mounting hole 32 of the rim 31 of the crawler 2 (FIG. 7), which are the operation mechanism of the landmine disposal apparatus 1 of the present embodiment. (B) is provided with an opening 30 and an opening 33 that are tapered on the surface side, and the inclination of the taper of the openings 30 and 33 of these mounting holes is determined by the spacer 25 described above. The taper surface 27 (see FIG. 6) is equal to the taper inclination.

  As shown in FIG. 2, a fuel tank 34, a battery 35, a hydraulic oil tank 36, and the like are provided in the mine treatment apparatus 1 of the present embodiment, and are connected to or connected to the above-described members. ing.

  Next, the operation of the landmine treatment apparatus of this embodiment will be described.

  As described above, the landmine disposal device 1 of the present embodiment is an unmanned landmine disposal device that allows an operator to remotely operate landmine disposal. In the land mine disposal work, the land mine detection sensor 4 (see FIG. 1) is operated close to the ground surface to detect a land mine buried in the ground while moving. When a land mine is detected, the manipulator 3 performs a process such as removing the land mine from the ground or blasting and destroying it.

  When the worker operates the landmine disposal device 1 by remote control, the diesel engine 10 (see FIG. 2) mounted on the vehicle body is driven, and the drive is performed by four hydraulic motors via the hydraulic pump and the hydraulic circuit. 13, the rotational output of the hydraulic motor 13 is transmitted to the axle 15 via the output shaft 14 and the shaft coupling 16, and the four crawlers 2 or the tires 6 are independently driven and rotated. In this way, the mine treatment apparatus 1 moves on the minefield.

  As described above, the minefield is often a former battle area, a wilderness or a slope, or an irregular terrain where infrastructure such as roads and bridges is destroyed, and the crawler 2 is an operating mechanism. It is often the case that the processing is carried out by wearing. However, there are cases where landmines are buried in relatively leveled areas such as roadsides. In such cases, non-puncture tires such as solid tires and non-punctured tires should be attached to perform processing operations. You can also.

  Here, how to attach a tire or a crawler to the hub of the landmine disposal apparatus 1 of the present embodiment will be described. FIG. 8 is a partial cross-sectional view showing a state where the tire is attached to the hub, and a two-dot chain line represents an outline of the tire 6. FIG. 9 is a partial cross-sectional view illustrating a state in which the crawler is attached to the hub, and a two-dot chain line represents an outline of the crawler 2. 8 and 9, a washer is disposed between the bolt head of the fastening bolt 24 and the spacer 25.

  As shown in FIG. 8, in order to attach the tire 6 to the hub 19, first, eight mounting holes 29 provided in the wheel 28 of the tire 6 are provided with eight female screw portions provided in the flange portion 22 of the hub 19. Next, the fastening bolt 24 inserted into the spacer 25 from the front surface side of the wheel 28 is inserted into the mounting hole 29 and screwed to the female screw portion 23 of the flange portion 22 of the hub 19. . The remaining seven locations are also tightened sequentially with fastening bolts 24 to attach the tire 6 to the flange portion 22 of the hub 19.

  The crawler 2 is attached to the hub 19 in the same manner. That is, first, the eight attachment holes 32 provided in the rim 31 of the crawler 2 are attached so as to correspond to the eight female screw portions 21 provided in the spigot portion 20 of the hub 19, and then the surface of the rim 31. The fastening bolt 24 inserted into the spacer 25 from the side is inserted into the mounting hole 32 and screwed into the female screw portion 21 of the spigot portion 20 of the hub 19. The remaining seven locations are sequentially tightened with fastening bolts 24 to attach the crawler 2 to the spigot portion 20 of the hub 19.

  Further, when the wheel 28 or the rim 31 is attached to the hub 19, the centering function by the spacer 25 works. FIG. 10 is a schematic diagram for explaining the centering function by the spacer.

  For example, as shown in FIG. 10A, the fastening bolt 24 is tightened even if the position of the female screw portion 23 of the flange portion 22 of the hub 19 and the position of the mounting hole 29 of the tire wheel 28 are slightly shifted in the vertical direction. Then, the spacer 25 is pushed into the mounting hole 29, and at this time, the tapered surface 27 of the spacer 25 pushes up the opening 30 provided in a tapered shape on the surface side of the mounting hole 29. Therefore, the wheel 28 is pushed up as a whole, and the wheel 28 is accurately centered in a state where the fastening bolt 24 is completely screwed as shown in FIG. 10B. Similarly, when the rim 31 of the crawler 2 is attached to the inlay portion 20 of the hub 19 as shown in FIG.

  As described above, according to the operation mechanism mounting structure of the landmine disposal apparatus 1 of the present embodiment, the fastening bolt 24 is screwed to the female thread portion 21 of the inlay portion 20 of the hub 19 to attach the rim 31 of the crawler 2, or Since the fastening bolt 24 is screwed onto the female screw portion 23 of the flange portion 22 of the hub 19 and the wheel 28 of the tire 6 is simply attached, the operation mechanism, that is, the crawler 2 and the tire 6 can be attached and replaced very easily. Can do. As described above, since the operation mechanism can be easily attached and exchanged, it can be easily carried out even at a mine disposal work site.

  Further, as described above, in this attachment or replacement, the centering function of the spacer 25 is exhibited by tightening the fastening bolt 24, so that the operation mechanism can be easily and accurately centered. Become.

  Thus, since the landmine disposal apparatus 1 of the present embodiment has the operation mechanism mounting structure unique to the present invention, the crawler 2, the tire 6 and the like can be easily replaced, and centering can be easily performed. It is possible to perform work by exchanging the operation mechanism as appropriate according to the environment of the work site, and it is possible to realize efficient landmine removal work.

  In addition, the operation mechanism of the landmine disposal device 1 is constantly subjected to impacts due to undulations of the ground at the work site, and sometimes a very strong impact is applied due to the explosion of landmines, and therefore, damage such as breaking of fastening bolts is rarely caused. is not. In such a case, in a mounting structure in which the bolt portion of the fastening bolt is erected on the surface of the hub 19 like a normal fastening bolt and a rim or the like is fitted and tightened with a nut, the fastening bolt is damaged. Although it is necessary to replace the entire hub, as in the present embodiment, by tightening the female bolt portions 21 and 23 provided on the hub 19 with the fastening bolts 24 from the outside, it is easy even if the fastening bolts 24 are damaged. Can be replaced.

  Furthermore, the mounting hole 32 of the rim 31 of the crawler 2 and the mounting hole 29 of the wheel 28 of the tire 6 are generally formed on the circumferences of different radii, but the mounting of the crawler 2 as in this embodiment. A female screw portion 21 and a female screw portion 23 are provided on the inner and outer two concentric circles having different radii from the rotation center L2 (see FIG. 5) in the hub 19 so as to correspond to the positions of the hole 32 and the mounting hole 29 of the tire 6. If this is the case, it is possible to use the operation mechanism including the rim and the wheel that are normally used as described above.

  Further, as in the present embodiment, the hub 19 is formed with an inlay portion 20 that protrudes in a circular shape and the periphery thereof is a flange portion 22, so that when the wheel 28 of the tire 6 is mounted on the flange portion 22, Since the wheel 28 can be mounted so as to be fitted into the protruding spigot portion 20, the mounting operation is facilitated. At the same time, if the shape of the spigot portion 20 is adjusted, the center ring is almost centered when the wheel 28 is fitted into the spigot portion 20. It is also possible to achieve a state that has been made.

  In the present embodiment, the case where the mine treatment apparatus 1 is an unmanned mine treatment apparatus that performs a treatment operation by remote operation is shown, but the same applies to a manned mine treatment apparatus that is directly operated by an operator. Is possible.

It is a side view which shows the landmine processing apparatus of this embodiment. It is a top view which shows the internal vehicle body structure of the landmine processing apparatus of FIG. It is a schematic diagram which shows the operating state of a shaft coupling. It is sectional drawing which shows the axle shaft attached to the main frame via the bearing. It is a perspective view which shows the inlay part and flange part of a hub. It is a perspective view which shows a fastening bolt and a spacer. It is a partial sectional view showing each opening of a wheel (A) of a tire and a rim (B) of a crawler. It is a partial cross section figure which shows the state which attached the tire to the hub. It is a partial cross section figure which shows the state which attached the crawler to the hub. It is a schematic diagram explaining the centering function by a spacer.

Explanation of symbols

1 Mine disposal equipment 2 Crawler (operating mechanism)
6 Tire (operation mechanism)
19 Hub 20 Inlay part 21, 23 Female thread part 22 Flange part 24 Fastening bolt 25 Spacer 26 Through hole 27 Tapered surface 29, 32 Mounting hole 30, 33 Opening L2 Center of rotation

Claims (4)

An operation mechanism mounting structure of a landmine treatment device for treating landmines buried in the ground,
An operation mechanism provided with a mounting hole having a tapered opening on the surface side;
A hub provided with an internal thread at a position corresponding to the mounting hole of the operating mechanism;
A spacer having a through hole in the center portion and a tapered surface engaging with a tapered opening of the mounting hole of the operating mechanism on the outer peripheral surface;
An operating mechanism mounting structure for a landmine treatment apparatus, comprising: a fastening bolt that is inserted into the through hole of the spacer and the mounting hole of the operating mechanism and can be screwed into the female screw portion of the hub.   The operation mechanism mounting structure for a landmine disposal device according to claim 1, wherein the operation mechanism is a crawler or a tire.   The internal thread portion of the hub is provided on two inner and outer concentric circles having different radii from the center of rotation of the hub so as to correspond to mounting holes provided in a crawler rim and a tire wheel, respectively. An operation mechanism mounting structure for a landmine disposal device according to claim 1 or 2.   The hub includes on its surface a spigot portion protruding in a circular shape centering on the rotation center, the inner female screw portion is a spigot portion, and the outer female screw portion is a flange portion around the spigot portion, respectively. The operation mechanism mounting structure for a landmine disposal device according to claim 3, wherein the structure is provided.

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