JP2014108685A - Driving force improvement device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an amphibian motor car in which driving force is improved by increasing crawler width when a crawler belt comes into contact with the ground surface without changing design of a vehicle body, a crawler belt cover or an engine.SOLUTION: A driving force improvement device includes: a first crawler plate piece 22 a part of which can be freely taken out to/put in from the outside from a first dent part 21a by being supported by a first rotary support shaft 24 rotatably in the horizontal direction, and which rotates by sliding against a crawler belt cover 28 by the rotation of a crawler belt 13; a second crawler plate piece 23 a part of which can be freely taken out to/put in from the outside from a second dent part 21b by being supported by a second rotary support shaft 25 rotatably in the horizontal direction, and which rotates by sliding against a vehicle body 14 by the rotation of the crawler belt 13; a first torsion spring 26 which makes a part of the first crawler plate piece 22 resile outward of the first dent part 21a; and a second torsion spring 27 which makes a part of the second crawler plate piece 23 resile outward of the second dent part 21b. By increasing the crawler width when the crawler belt comes into contact with the ground surface, the driving force can be improved.

Description

  The present invention relates to a driving force improving device for a tracked vehicle.

  Existing amphibious vehicles often use tire-specific wheeled vehicles, but track performance on rough terrain is higher for track-equipped tracked vehicles in which a plurality of crawler plates are connected in a belt shape. For example, Patent Document 1 below discloses a technique of a tracked vehicle developed as an amphibious rough terrain vehicle for disaster rescue.

  FIG. 9 is a schematic view of an amphibious vehicle. As shown in the figure, the amphibious vehicle 11 includes rolling wheels 12a, starting wheels 12b, crawler belts 13, and a vehicle body 14.

  The crawler belt 13 is formed by connecting a plurality of crawler plates in a belt shape, and the crawler belt 13 and the rolling wheels 12a are interlocked with each other when the starter wheel 12b rotates when the starter wheel 12b and the crawler belt 13 are engaged with each other. Become.

  Although not shown, many vehicles have a crawler belt cover that covers the crawler belt 13 from above in order to protect the crawler belt 13 from various threats.

JP 2002-019436 A Japanese Patent Laid-Open No. 61-033322

  As shown in FIG. 10 (a), when the amphibious vehicle 11 landed from the surface 2 to the land 1, a driving force larger than that of the normal land traveling is required, and the surface propulsion apparatus and the ground traveling track are required. In some cases, a greater driving force is required. Further, as shown in FIG. 10 (b), a large driving force is required even when running on the steep slope 3, and when running on the ice 4 as shown in FIG. Since the frictional resistance of No. 4 is low, a large driving force is required.

  Patent Document 2 discloses a technique for improving the driving force. However, when various parts as disclosed herein are provided, the vehicle width may be increased, and the vehicle may not be transported by a transport vehicle such as a truck due to the increase in the vehicle width.

  Also, if the driving force is to be improved by an engine, an overspec engine must be installed.

  Therefore, in the present invention, without changing the design of the vehicle body, the crawler belt cover, or the engine, the width of the crawler belt (crawler plate (crawler belt)) is increased when the crawler belt is in contact with the ground while suppressing the increase in the vehicle width. The purpose is to improve the driving force.

A driving force improving apparatus according to a first invention for solving the above-mentioned problems is as follows.
A device for improving the driving force of a tracked vehicle including a crawler belt in which a plurality of crawler plates are connected in a belt shape,
A portion that is provided on the shoe plate and protrudes from an outer edge or an inner edge of the shoe plate while the shoe plate is in contact with the ground, and the portion is fixed to the shoe plate against vertical stress. , Characterized in that it comprises at least one piece of footwear.

A driving force improving apparatus according to a second invention for solving the above-mentioned problems is as follows.
In the driving force improving apparatus according to the first invention,
A crawler belt cover covering the crawler belt from above;
It has a first dent on the outer end surface, a second dent on the inner end surface, a first rotation support shaft is fixed in the first dent, and a second rotation support shaft is fixed in the second dent. Said crawler plate,
By being supported by the first rotation support shaft so as to be rotatable in the horizontal direction, a part thereof can be taken in and out from the first recess, and horizontally by sliding with respect to the crawler belt cover by the rotation of the crawler belt. The first crotch piece rotating in the direction and the second rotation support shaft are supported so as to be rotatable in the horizontal direction, so that a part thereof can be taken in and out from the second depression, and the crawler belt is rotated. The shoe plate piece comprising a second shoe plate piece that rotates in the horizontal direction by sliding relative to the vehicle body of the tracked vehicle;
First urging means for repelling the part of the first cuff piece to the outside of the first depression,
And a second urging means for repelling the part of the second shoe plate piece to the outside of the second depression.

A driving force improving apparatus according to a third invention for solving the above-described problem is
In the driving force improving apparatus according to the first invention,
The shoe plate having a first rotation support shaft at the outer tip and a second rotation support shaft at the inner tip;
When it is supported by the first rotation support shaft so as to be unfoldable and opened to be parallel to the shoe plate, a part of the shoe plate overlaps with the shoe plate from below, so that the vertical plate is subjected to the vertical stress. The first bottom plate piece is fixed and has a shape in which the bottom surface of the part, the bottom surface other than the part, and the bottom surface of the shoe plate are in uniform contact with a flat ground, and is developed by the second rotation support shaft. When it is supported freely and opened until it is parallel to the shoe plate, a part of the shoe plate overlaps the shoe plate from below, so that it is fixed to the shoe plate against the normal stress and The crawler plate piece includes a second crawler plate piece having a shape in which a bottom surface, a bottom surface other than the part, and a bottom surface of the crawler plate are in uniform contact with a flat ground.

A driving force improving apparatus according to a fourth invention for solving the above-mentioned problems is as follows.
In the driving force improving apparatus according to the second or third invention,
A solid lubricant is respectively installed in a portion of the crawler belt cover that contacts the first crawler plate piece and a portion of the vehicle body that contacts the second crawler plate piece.

  According to the driving force improving apparatus according to the first aspect of the present invention, the crawler plate piece is provided, so that the width of the crawler can be widened at the time of contact with the ground and the driving force can be improved.

  According to the driving force improving device according to the second aspect of the invention, by providing the first crawler plate piece and the second crawler plate piece that are rotatable in the horizontal direction, the crawler width is widened when contacting the ground, and the driving force is improved. Can be made.

  According to the driving force improving device according to the third aspect of the present invention, by providing the first crawler plate piece and the second crawler plate piece that can be developed, the crawler width is widened when contacting the ground, and the driving force is improved. Can do.

  According to the driving force improving apparatus according to the fourth aspect of the invention, the crawler belt can be prevented from being damaged by installing the solid lubricant.

It is the schematic of the driving force improvement apparatus which concerns on Example 1 of this invention. It is AA sectional drawing in FIG. It is the schematic explaining the action | operation of the driving force improvement apparatus which concerns on Example 1 of this invention. It is a graph which shows the relationship between the normal stress and driving force in Example 1 of this invention. It is sectional drawing of the footboard, the 1st footwear piece, and the 2nd footwear piece in Example 1 of this invention. It is the schematic explaining the action | operation of the driving force improvement apparatus which concerns on Example 2 of this invention. It is the schematic showing a part of driving force improvement device concerning Example 3 of the present invention. The right figure of (a) is a top view in the vicinity of the end part of the shoeboard, and the left figure is a top view of the first shoeboard piece. The right figure of (b) is a side view in the vicinity of the end part of the shoeboard, and the left figure is a side view of the first shoeboard piece 2. (C) is a top view showing a state in which the end portion of the shoeboard and the one end portion of the first shoeboard overlap. (D) is a side view showing a state in which the end portion of the shoeboard and the one end portion of the first shoeboard overlap each other. (E) is a bottom view showing a state in which the end portion of the shoeboard and the one end portion of the first shoeboard overlap. It is the schematic of the driving force improvement apparatus which concerns on Example 3 of this invention. It is a schematic diagram of an amphibious vehicle. It is the schematic explaining the use of an amphibious vehicle. (A) represents a state of landing from the water to the land, (b) represents a state of traveling on a steep slope, and (c) represents a state of traveling on ice.

  Hereinafter, a driving force improving device according to the present invention will be described with reference to the drawings in the embodiments.

  A driving force improving apparatus according to Embodiment 1 of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view of the apparatus. As shown in the drawing, the present apparatus includes a shoe plate 21, a first shoe plate piece 22, a second shoe plate piece 23, a first rotation support shaft 24, a second rotation support shaft 25, a first torsion spring 26, and a second torsion spring. A spring 27 is provided. In addition, the white arrow in FIG. 1 has shown the rotation direction of the crawler belt. FIG. 2 is a cross-sectional view taken along the line AA in FIG.

  As shown in FIGS. 1 and 2, the above-described crawler plate 21 has a first dent 21 a on the outer end surface and a second dent 21 b on the inner end surface.

  Further, the first rotation support shaft 24 is fixed to the first depression 21a, and the second rotation support shaft 25 is fixed to the second depression 21b.

  The first crotch plate piece 22 is supported by the first rotation support shaft 24 so as to be rotatable in the horizontal direction, so that a part of the first crawler plate piece 22 can be taken in and out from the first recess portion. It rotates in the horizontal direction by sliding with respect to the crawler belt cover.

  The second crawler plate piece 23 is supported by the second support shaft 25 so as to be rotatable in the horizontal direction, so that a part of the second crawler plate piece 23 can be taken in and out from the second recess 21b. Thus, it rotates in the horizontal direction by sliding with respect to the vehicle body of the tracked vehicle.

  The above-mentioned first torsion spring 26 is a biasing means that repels a part of the first shoe plate piece 22 to the outside of the first recess 21a, and the above-mentioned second torsion spring 27 is a second shoe plate piece 23. Is an urging means for projecting a part of the second to the outside of the second depression 21b.

  In the present apparatus, by adopting the above-described configuration, the first shoe plate piece 22 and the second shoe plate piece 23 are provided by the first torsion spring 26 and the second torsion spring 27 in a state where no external force is applied. Each of which protrudes outward from the end face of the crawler plate 21, and the crawler width becomes wider than that of a conventional amphibious vehicle.

  FIG. 3 corresponds to a view taken along the line BB in FIG. 9 and is a schematic diagram for explaining the operation of the apparatus. The white arrow in FIG. 3 shows the rotation direction of the crawler belt. As shown in the figure, the first crawler plate piece 22, which partly protrudes outside the first recess 21 a by the first torsion spring 26, comes into contact with the crawler belt cover 28 as the crawler belt rotates. The first torsion spring 26 contracts and is accommodated in the first recess 21a (see FIG. 2) of the shoe plate 21 as indicated by the black arrow in the figure.

  On the other hand, when the crawler belt rotates, the second crawler plate piece 23 partially protruding to the outside of the two depressions 21b by the second torsion spring 27 is brought into contact with the vehicle body, so that the second torsion spring 27 contracts. And it is accommodated in the 2nd hollow part 21b (refer FIG. 2) of the footwear board 21 like the black arrow in the said figure.

  With the configuration as described above, the crawler width is widened at the lower part of the crawler belt, and the crawler width is narrowed at the upper part of the crawler belt. Therefore, it is not necessary to change the design of the vehicle body, the crawler belt cover, or the engine, and further, while suppressing the increase in the vehicle width, the crawler width can be widened when contacting the ground and the driving force can be improved.

  FIG. 5 shows a cross-sectional view of the shoeboard 21, the first shoeboard piece 22 and the second shoeboard piece 23 when in contact with the ground. As can be seen from the figure, the first shoeboard piece 22 and the second shoeboard piece 23 protrude to a position slightly higher than the bottom surface of the shoeboard 21 due to the structure of the shoeboard 21. Since the ground shape is rough on the ground 30 or the like, it is assumed that the first shoeboard piece 22 and the second shoeboard piece 23 are in contact with the ground, and a sufficient friction coefficient can be obtained.

  FIG. 4 is a graph showing the relationship between the vertical stress and driving force of an amphibious vehicle. The solid line is a theoretical value, and the broken line is an actual measurement value of a conventional amphibious vehicle. Since the friction coefficient is low in the width of a conventional amphibious vehicle, the measured value of the driving force with respect to the vertical stress is lower than the theoretical value as shown in the graph. However, when this apparatus is used, the crawler width increases when in contact with the ground, and the contact area between the crawler plate 21 and the ground increases, thereby increasing the friction coefficient. Then, as shown by the arrow in FIG. 4, the actual measured value of the driving force is improved so as to approach the theoretical value.

  Moreover, in this apparatus, since it is only necessary to change a part of the conventional amphibious vehicle 11, it is not necessary to manufacture a dedicated amphibious vehicle, and the manufacturing cost can be reduced.

  As mentioned above, although the driving force improvement apparatus which concerns on Example 1 was demonstrated, in other words, this apparatus has the crawler belt cover 28 which covers the said crawler belt from the upper part, the 1st hollow part 21a in an outer side end surface, and an inner side end surface. A first footboard 21 having a second recess portion 21b, the first rotation support shaft 24 being fixed in the first recess portion 21a, and the second rotation support shaft 25 being fixed in the second recess portion 21b; By being supported by the rotation support shaft 24 so as to be rotatable in the horizontal direction, a part thereof can be taken in and out from the first recess 21a and rotated in the horizontal direction by sliding with respect to the crawler belt cover 28 by the rotation of the crawler belt. By being supported by the first crotch plate piece 22 and the second rotation support shaft 25 so as to be rotatable in the horizontal direction, a part of the crawler vehicle can be inserted into and removed from the second depression 21b. Rotate horizontally by sliding against the body 14 And a first urging means (first torsion spring 26) for repelling the part of the first shoe plate piece 22 to the outside of the first recess portion 21a; Second urging means (second torsion spring 27) for repelling the part of the second shoe plate piece 23 to the outside of the second depression 21b is provided.

  A driving force improving apparatus according to Embodiment 2 of the present invention will be described with reference to the drawings. This apparatus is obtained by changing a part of the driving force improving apparatus according to the first embodiment. In addition, description of a common part with the driving force improvement apparatus which concerns on Example 1 is abbreviate | omitted.

  FIG. 6 corresponds to the BB arrow view of FIG. 9 and is a schematic diagram for explaining the operation of this apparatus. As shown in FIG. 6, a replaceable solid lubricant 31 is installed on a portion of the crawler belt cover 28 that contacts the first crawler plate piece 22 and a portion of the vehicle body 14 that contacts the second crawler plate piece 23. The solid lubricant 31 is preferably made of a soft metal such as tin.

  In the driving force improving apparatus according to the first embodiment, when the first crawler plate piece 22 contacts the crawler belt cover 28 and the second crawler plate piece 23 contacts the vehicle body 14, wear occurs at the contact portion.

  In this apparatus, by installing the solid lubricant 31, it is possible to reduce the above-described wear and to prevent the crawler belt from being damaged.

  A driving force improving apparatus according to Embodiment 3 of the present invention will be described with reference to the drawings. This apparatus is obtained by changing a part of the driving force improving apparatus according to the first and second embodiments. In addition, description of a common part with the driving force improvement apparatus which concerns on Example 1, 2 is abbreviate | omitted.

  FIG. 7 is a schematic diagram showing a part of the driving force improving apparatus according to Embodiment 3 of the present invention. 7A is a top view in the vicinity of the footboard end 21c, the left is a top view of the first footwear piece 22, and the right in FIG. 7B is in the vicinity of the footboard end 21c. The side view and the left view are side views of the first shoeboard piece 22. FIG. 7C is a top view showing a state in which the shoeboard end portion 21c and the first shoeboard piece end portion 22c overlap each other, and FIG. 7D shows the shoeboard end portion 21c and the first shoeboard. FIG. 7E is a bottom view showing a state in which the crawler plate end portion 21c and the first crawler plate one end portion 22c are overlapped with each other.

  In this apparatus, as shown in FIGS. 7C to 7E, the first shoe plate piece 22 is supported by a first rotation support shaft 24 provided at the outer front end portion of the shoe plate 21 so as to be unfoldable. When the first shoe plate piece 22 is opened until it is parallel to the shoe plate 21, the first shoe plate piece end portion 22c overlaps from the lower side of the shoe plate end portion 21c, so that it is fixed to the shoe plate 21 against vertical stress. Is done.

  Moreover, as shown in FIG. 7 (d), the shoeboard 21, the first shoeboard piece 22, the shoeboard end portion 21c, and the first shoeboard piece end portion 22c are surfaces that contact the ground when the vehicle is running. The bottom surface of the portion where the shoeboard end portion 21c and the first shoeboard piece end portion 22c overlap (in the figure, the first shoeboard piece end portion bottom surface 22e), the first shoeboard piece bottom surface 22d, and the shoeboard bottom surface 21d. The shape is uniformly in contact with the flat ground f.

  FIG. 8 is a schematic view showing this apparatus. The white arrow in the figure shows the rotation direction of the crawler belt. In FIG. 7, only the first shoe plate piece 22 is mentioned, but as shown in FIG. 8, the second shoe plate piece 23 has a symmetrical shape with the first shoe plate piece 22, and It is supported, and the same operation as that of the first shoeboard piece 22 is possible. In addition, the figure shows a state in which the first crawler plate piece 22 is opened until it is parallel to the crawler plate 21, but as can be seen from this, also in this apparatus, the crawler width when contacting the ground And driving force can be improved.

  Furthermore, in this apparatus, compared with the driving force improving apparatus according to the first and second embodiments, the contact area of the first shoeboard piece 22 with the ground is increased, and the effect can be exhibited not only on gravel but also on flat ground. .

  Further, in the present apparatus, as the crawler belt rotates and the surface in contact with the ground faces downward in the vertical direction, the first crawler piece 22 and the second crawler piece 23 are caused by their own weights, respectively. The two shoe plate pieces 23 are developed. On the other hand, as the crawler belt rotates and the surface in contact with the ground faces vertically upward, the first shoeboard piece 22 and the second shoeboard piece 23 are caused by the weight of the first shoeboard piece 22 and the second shoeboard piece 23, respectively. Is stored. The sides of the contact portion between the crawler belt cover 28 and the vehicle body 14 (both see FIG. 3) of the first crawler plate piece 22 and the second crawler plate piece 23 may be inclined so as to be brought into smooth contact.

  The driving force improving device according to the third embodiment has been described above. In other words, the present device has the first rotation support shaft 24 at the outer tip portion and the second rotation support shaft 25 at the inner tip portion. When the flat plate 21 is supported by the first rotary support shaft so as to be unfoldable and opened until it is parallel to the flat plate 21, a part of the flat plate 21 overlaps the lower side of the flat plate 21 from the lower side. 21, and a part of the bottom surface (first shoe plate piece end bottom surface 22 e), a bottom surface other than the part (first shoe plate piece bottom surface 22 d), and the bottom surface of the shoe plate 21 (crawler plate bottom surface 21 d). Is supported by the first crotch plate piece 22 having a shape that is uniformly in contact with the flat ground and the second rotation support shaft 25 so as to be unfoldable and partially opened to be parallel to the crawler plate 21, a part thereof. , It is fixed to the shoe plate 21 against vertical stress and overlaps with the part of the bottom surface. The bottom surface other than the part and the bottom surface of the footwear (both see FIG. 7 (d)) are provided with a footwear piece comprising a second footwear piece 23 having a shape that uniformly contacts the flat ground. .

  Moreover, in this apparatus, you may provide the solid lubricant material 31 in Example 2 in the crawler belt cover 28 and the vehicle body 14 (refer FIG. 6).

  As mentioned above, although the driving force improvement apparatus based on this invention was demonstrated in Examples 1-3, the shoeboard piece with which this apparatus is equipped is not limited to two, a 1st shoeboard piece and a 2nd shoeboard piece. Also good. In other words, this device is a device for improving the driving force of a tracked vehicle including a crawler belt in which a plurality of crawler plates are connected in a belt shape, and is provided on the crawler plate while the crawler plate is in contact with the ground. And a portion protruding from the inner end portion, and the portion includes at least one piece of the shoe board that is fixed to the shoe board against vertical stress.

[Operation example]
The operation example of the amphibious vehicle provided with the driving force improvement apparatus which concerns on Examples 1-3 is shown.

  On a flat ground, the use of the driving force improving device according to the third embodiment allows the first shoeboard piece 22 and the second shoeboard piece 23 to be in sufficient contact with the ground, so that the effect can be exhibited.

  In a muddy area, it is assumed that a conventional amphibious vehicle will sink, but in the driving force improvement devices according to Examples 1 to 3, the surface pressure decreases by increasing the width of the garment. Since it is possible to reduce the possibility of sinking, it is better to use an amphibious vehicle including any one of the driving force improving devices according to the first to third embodiments.

  In gravel land, the driving force can be improved in an amphibious vehicle provided with any of the driving force improving devices according to the first to third embodiments.

  In the snowy land, it is assumed that the conventional amphibious vehicle sinks, as in the muddy area. However, in the driving force improving devices according to Examples 1 to 3, the contact pressure is increased by increasing the width of the garment. Since the possibility of sinking as described above can be reduced, it is better to use an amphibious vehicle including any one of the driving force improving devices according to the first to third embodiments.

  In addition, an amphibious vehicle equipped with any one of the driving force improvement devices according to the first to third embodiments is used in situations where driving force such as landing from the water to land, steep slope, or on ice is required. You should be.

  The driving force improving devices according to the first to third embodiments of the present invention described above can be effective as long as they are tracked vehicles, and are not limited to amphibious vehicles.

  The present invention is suitable as a driving force improving device for a tracked vehicle.

DESCRIPTION OF SYMBOLS 1 Land 2 Water 3 Inclination 4 Ice 11 Amphibious vehicle 12a Rolling wheel 12b Starting wheel 13 Crawler belt 14 Car body 21 Crawler plate 21a First hollow part 21b Second hollow part 21c Crawler belt edge part 21d Crawler belt bottom face 22 First cuff piece 22c 1 footwear piece end 22d 1 footwear piece bottom 22e first footwear piece end bottom 23 second footwear piece 24 first rotation support shaft 25 second rotation support shaft 26 first torsion spring 27 second torsion spring 28 crawler belt Cover 30 Gravel 31 Solid lubricant f Flat ground

Claims (4)

A device for improving the driving force of a tracked vehicle including a crawler belt in which a plurality of crawler plates are connected in a belt shape,
A portion that is provided on the shoe plate and protrudes from an outer edge or an inner edge of the shoe plate while the shoe plate is in contact with the ground, and the portion is fixed to the shoe plate against vertical stress. A driving force improving device, comprising at least one piece of footwear. A crawler belt cover covering the crawler belt from above;
It has a first dent on the outer end surface, a second dent on the inner end surface, a first rotation support shaft is fixed in the first dent, and a second rotation support shaft is fixed in the second dent. Said crawler plate,
By being supported by the first rotation support shaft so as to be rotatable in the horizontal direction, a part thereof can be taken in and out from the first recess, and horizontally by sliding with respect to the crawler belt cover by the rotation of the crawler belt. The first crotch piece rotating in the direction and the second rotation support shaft are supported so as to be rotatable in the horizontal direction, so that a part thereof can be taken in and out from the second depression, and the crawler belt is rotated. The shoe plate piece comprising a second shoe plate piece that rotates in the horizontal direction by sliding relative to the vehicle body of the tracked vehicle;
First urging means for repelling the part of the first cuff piece to the outside of the first depression,
2. The driving force improving device according to claim 1, further comprising: a second urging unit that repels the part of the second shoe plate piece to the outside of the second recess portion. The shoe plate having a first rotation support shaft at the outer tip and a second rotation support shaft at the inner tip;
When it is supported by the first rotation support shaft so as to be unfoldable and opened to be parallel to the shoe plate, a part of the shoe plate overlaps with the shoe plate from below, so that the vertical plate is subjected to the vertical stress. The first bottom plate piece is fixed and has a shape in which the bottom surface of the part, the bottom surface other than the part, and the bottom surface of the shoe plate are in uniform contact with a flat ground, and is developed by the second rotation support shaft. When it is supported freely and opened until it is parallel to the shoe plate, a part of the shoe plate overlaps the shoe plate from below, so that it is fixed to the shoe plate against the normal stress and 2. The shoe plate piece comprising a second shoe plate piece having a shape in which a bottom surface, a bottom surface other than the part, and a bottom surface of the shoe plate are in contact with a flat ground surface uniformly. The driving force improvement apparatus as described in 2.   4. The solid lubricant is installed on a portion of the crawler belt cover that contacts the first crawler plate piece and a portion of the vehicle body that contacts the second crawler plate piece, respectively. Driving force improvement device.

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