WO2018186145A1 - Chenille élastique - Google Patents

Chenille élastique Download PDF

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Publication number
WO2018186145A1
WO2018186145A1 PCT/JP2018/010286 JP2018010286W WO2018186145A1 WO 2018186145 A1 WO2018186145 A1 WO 2018186145A1 JP 2018010286 W JP2018010286 W JP 2018010286W WO 2018186145 A1 WO2018186145 A1 WO 2018186145A1
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WO
WIPO (PCT)
Prior art keywords
crawler
lug
elastic
recess
thickness direction
Prior art date
Application number
PCT/JP2018/010286
Other languages
English (en)
Japanese (ja)
Inventor
聡 六尾
Original Assignee
株式会社ブリヂストン
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社ブリヂストン filed Critical 株式会社ブリヂストン
Priority to CN201880023932.4A priority Critical patent/CN110494348A/zh
Priority to KR1020197029218A priority patent/KR20190126112A/ko
Publication of WO2018186145A1 publication Critical patent/WO2018186145A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/08—Endless track units; Parts thereof
    • B62D55/18—Tracks
    • B62D55/24—Tracks of continuously flexible type, e.g. rubber belts
    • B62D55/253—Tracks of continuously flexible type, e.g. rubber belts having elements interconnected by one or more cables or like elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/20—Off-Road Vehicles
    • B60Y2200/25—Track vehicles

Definitions

  • the present invention relates to an elastic crawler.
  • a recess is formed on the inner peripheral surface of the crawler body on the outer side in the crawler width direction of the roller passage portion between the reinforcing member (core metal) adjacent to the crawler circumferential direction and the lug.
  • core metal reinforcing member
  • the inventor of the present application has affected the distortion caused by winding the elastic crawler, and even in the conventional elastic crawler as described above, in particular, the portion where the lug itself is disposed. Since a large resistance is generated, it has been recognized that there is room for improvement in the reduction of distortion generated during winding.
  • An object of the present invention is to provide an elastic crawler in which distortion generated during winding is reduced.
  • An elastic crawler includes an endless crawler body made of an elastic material, a plurality of lugs that are arranged on the outer circumferential surface of the crawler body at intervals in the crawler circumferential direction and extend in the crawler width direction.
  • a plurality of recesses disposed on the inner peripheral surface of the crawler body at intervals in the crawler circumferential direction, and at least a part of the recesses in the crawler thickness direction projection is a center line of the lug It is arranged at the position that overlaps. According to the elastic crawler according to the present invention, the strain generated at the time of winding is reduced by reducing the resistance generated in the portion where the lug is disposed.
  • the center line of the concave portion extends in a direction coinciding with or substantially parallel to the center line of the lug in the crawler thickness direction projection view. In this case, the distortion generated at the time of winding can be further reduced.
  • the outer contour line of the recess extends substantially parallel to the outer contour line of the lug in the crawler thickness direction projection view. In this case, the distortion generated at the time of winding can be further reduced.
  • the whole of the concave portion is located in a lug circumferential region sandwiched between both edges of the lug in the crawler circumferential direction. In this case, it is possible to reduce distortion that occurs during winding while suppressing a decrease in durability of the elastic crawler.
  • the entire recess is located in a lug width direction region sandwiched between both edges of the lug in the crawler width direction. In this case, it is possible to reduce distortion that occurs during winding while suppressing a decrease in durability of the elastic crawler.
  • the outer contour line of the concave portion coincides with the outer contour line of the lug in the crawler thickness direction projection view. In this case, it is possible to further reduce distortion that occurs during winding while suppressing a decrease in durability of the elastic crawler.
  • the deepest portion of the concave portion overlaps the top surface of the lug in the crawler thickness direction projection view. In this case, it is possible to further reduce distortion that occurs during winding while suppressing a decrease in durability of the elastic crawler.
  • FIG. 2 is a cross-sectional view taken along the line AA in FIG. It is an elastic crawler concerning other embodiments of the present invention, and is a top view showing some inner peripheral surfaces of the elastic crawler.
  • reference numeral 1A denotes an elastic crawler according to an embodiment of the present invention.
  • 1 and 2 are plan views showing a part of the outer peripheral surface and the inner peripheral surface of the elastic crawler 1A, respectively.
  • “crawler plan view” means that the elastic crawler 1A is seen in plan view as shown in FIG. 1 or FIG. 3 is a cross-sectional view taken along the line AA in FIG.
  • symbol Z show a crawler width direction, a crawler circumferential direction, and a crawler thickness direction, respectively.
  • crawler thickness direction projection view means that the elastic crawler 1A is projected (see-through) in the crawler thickness direction.
  • reference numeral 2 denotes an endless crawler body made of an elastic material. As shown in FIGS. 1 to 3, the crawler body 2 extends in an endless belt shape in the crawler circumferential direction. In the present embodiment, the crawler body 2 is mainly made of rubber.
  • reference numeral 3 denotes a lug that is disposed on the outer peripheral surface 2a of the crawler main body 2 at intervals in the crawler circumferential direction and extends in the crawler width direction.
  • the outer contour shape of the lug 3 is formed by the outer contour line 3L of the lug 3.
  • the outer contour line 3 ⁇ / b> L of the lug 3 is a boundary line between the outer peripheral surface 2 a of the crawler main body 2 and the lug 3. As shown in FIG. 3, each lug 3 protrudes from the outer peripheral surface 2a of the crawler body 2 in the crawler thickness direction.
  • the portion that protrudes most in the crawler thickness direction from the outer peripheral surface 2 a of the crawler body 2 constitutes a tread (top surface) 3 a of the lug 3. That is, in the present embodiment, the tread surface 3a of the lug 3 refers to a portion farthest from the outer peripheral surface 2a of the crawler body 2 in the crawler thickness direction. In the present embodiment, the tread surface 3a of the lug 3 is a flat surface.
  • the lug 3 is made of an elastic material like the crawler body 2.
  • the lug 3 is mainly made of rubber, like the crawler body 2.
  • the lug 3 is vulcanized and bonded to the outer peripheral surface 2 a of the crawler body 2.
  • the lug 3 can be integrally formed with the crawler body 2 using a mold.
  • a plurality of lugs 3 are arranged at equal intervals in the crawler circumferential direction.
  • the lugs 3 are arranged on both sides in the crawler width direction.
  • the lug 3 is arrange
  • the crawler center line O extends along the crawler circumferential direction through the center in the crawler width direction.
  • the lug 3 extends along the center line O3 of the lug 3 (hereinafter also referred to as “lag center line O3”).
  • the lag center line O3 is a line connecting the midpoints of the lag 3.
  • the midpoint of the lug 3 is the midpoint of the crawler circumferential width of the tread surface 3 a of the lug 3.
  • the lug center line O3 extends in the crawler width direction.
  • the lug center line O3 defines the extending direction of the lug 3.
  • the lug 3 is composed of a long lug 3A and a short lug 3B.
  • the long lug 3A is a lug longer in the crawler width direction than the short lug 3B.
  • the lug center line O3 of the long lug 3A (hereinafter also referred to as “long lug center line OA”) is a straight line inclined with respect to the crawler circumferential direction and the crawler width direction in the crawler plan view, and the crawler It is comprised by the straight line extended along the width direction.
  • the lug center line O3 of the short lug 3B (hereinafter also referred to as “short lug center line OB”) is a straight line inclined with respect to the crawler circumferential direction and the crawler width direction in the crawler plan view. .
  • the long lugs 3A and the short lugs 3B are alternately arranged at intervals in the crawler circumferential direction.
  • the long lugs 3A and the short lugs 3B are not necessarily arranged alternately.
  • the lug 3 can be comprised only by the long lug 3A or only the short lug 3B.
  • reference numeral 4 is a metal core that is arranged in the crawler circumferential direction at intervals and is embedded in the crawler main body 2.
  • the cored bar 4 is made of a metal such as steel.
  • the cored bar 4 extends along the crawler width direction.
  • the cored bar 4 has one base portion 4a and two wing portions 4b. Each of the two wing portions 4b extends in the crawler width direction from the base portion 4a.
  • the cored bar 4 has two protrusions 4c that are spaced from each other in the crawler width direction between the base 4a and the wing 4b (or the base 4a or the wing 4b). .
  • the two protrusions 4 c protrude from the inner peripheral surface 2 b of the crawler body 2 in the crawler thickness direction.
  • a tensile body (for example, a steel cord) 5 is embedded in the crawler body 2.
  • the tensile body 5 is disposed at a position closer to the outer peripheral surface 2 a of the crawler body 2 than the cored bar 4.
  • the tensile body 5 is, for example, wound in a spiral shape in the crawler circumferential direction, or formed in the end band shape and joined to both ends of the tensile body 5 in series in the crawler width direction. It is arranged.
  • reference numeral 6 denotes a plurality of recesses disposed on the inner peripheral surface 2b of the crawler body 2 at intervals in the crawler circumferential direction.
  • the outer contour shape of the concave portion 6 is formed by the outer contour line 6 ⁇ / b> L of the concave portion 6.
  • the outer contour line 6 ⁇ / b> L of the recess 6 is a boundary line between the inner peripheral surface 2 b of the crawler body 2 and the recess 6.
  • the recess 6 extends along the center line O6 of the recess 6 (hereinafter also referred to as “recess center line O6”).
  • the recess center line O6 is a line connecting the midpoints of the recesses 6.
  • the midpoint of the recess 6 is the midpoint of the crawler circumferential width of the deepest portion (bottom) 6 a of the recess 6.
  • the recess center line O6 extends in the crawler width direction.
  • the recess center line O6 defines the extending direction of the recess 6.
  • the recess 6 is disposed at a position where at least a part thereof overlaps the lug center line O3 in the crawler thickness direction projection view.
  • the recess 6 only needs to include the lug center line O3 in the region of the outer contour shape of the recess 6 formed at least by the outer contour line 6L in the crawler plan view. That is, the lug center line O3 only needs to be included in the region of the outer contour shape of the recess 6 in the crawler thickness direction projection view.
  • “inside the region” or “inside the region” includes a boundary (line) with the outside of the region. In this embodiment, as shown in FIG.
  • the deepest part 6a of the recessed part 6 is arrange
  • the deepest part 6a of the recessed part 6 is arrange
  • the deepest portion 6a of the recess 6 is disposed in a region inside the contour shape of the tread surface 3a of the lug 3 in the crawler thickness direction projection view, and the crawler width direction along the tread surface 3a of the lug 3 It extends to. As shown in FIG.
  • the deepest part 6a of the recessed part 6 says the part furthest from the inner peripheral surface 2b of the crawler main body 2 in the crawler thickness direction.
  • the deepest part 6a of the recessed part 6 is comprised by the plane.
  • the recessed part 6 is comprised by the inclined surface between the outer outline shape (inner peripheral surface 2b of the crawler main body 2) of the said recessed part 6, and the deepest part 6a.
  • the inclined surface of the concave portion 6 can be configured as a flat surface or a curved surface. Or the inclined surface of the said recessed part 6 can also be comprised by one or several level
  • the inclined surface or the step surface of the recess 6 can be connected to the deepest portion 6a by R.
  • the rolling wheel rolling surface (rolling wheel passage portion) 7 is disposed at a position adjacent to the protrusion 4c of the core metal 4 in the crawler width direction. ing.
  • the wheel rolling surface 7 is a flat surface. Further, as shown in FIG. 2, the rolling wheel rolling surface 7 extends in the crawler circumferential direction.
  • Each of the recesses 6 is recessed in the crawler thickness direction from the inner peripheral surface 2b of the crawler main body 2 at a position at least partially overlapping with the lug center line O3 in the crawler thickness direction projection view.
  • the concave portion 6 is formed in a part of the inner peripheral surface 2 b of the crawler body 2 and the thickness of the crawler body 2 in the portion where the lug 3 is disposed is reduced, the portion where the lug 3 is disposed is formed.
  • the elastic crawler 1 ⁇ / b> A in which distortion generated during winding is reduced.
  • the inner peripheral surface 2b of the crawler body 2 includes a rolling wheel rolling surface (rolling wheel passage portion) 7.
  • the inner peripheral surface 2b of the crawler main body 2 in which the recess 6 is disposed is at least the inner peripheral surface 2b of the crawler main body 2 that is closest to the outer peripheral surface 2a of the crawler main body 2 in the crawler thickness direction. I just need it.
  • the inner peripheral surface 2b of the crawler main body 2 in which the recess 6 is disposed is at least on the outer peripheral surface 2a side of the crawler main body 2 with respect to the roller rolling surface (roller passing portion) 7, and FIG.
  • the elastic crawler in an elastic crawler, in a portion where the crawler is thick, heat generated by the bending of the elastic crawler causes a bonded portion between the rubber and the metal portion (in this embodiment, the core metal 4 or the tensile member 5). It may be deteriorated.
  • the elastic crawler preferably employs a structure that suppresses heat generation.
  • the elastic crawler 1A according to the present embodiment since the recess 6 is formed on the inner peripheral surface 2b of the crawler body 2, the distortion generated in the rubber is reduced and the extension of the rubber is reduced. Thus, it is possible to suppress the heat generation of the rubber.
  • the concave portion 6 is formed on the inner peripheral surface 2b of the crawler main body 2, thereby reducing the bending resistance and transmitting the driving force from the machine body without loss. You can also.
  • the concave portion 6 is formed on the inner peripheral surface 2b of the crawler main body 2, the amount of material used (for example, rubber usage) of the crawler main body 2 can be reduced. It is also possible to reduce the weight of the crawler 1A).
  • an excessive contraction portion or the like may occur at the position of the inner peripheral surface 2b of the crawler body 2 where the lug 3 is disposed.
  • an excessive contraction portion or the like may occur at the position of the inner peripheral surface 2b of the crawler body 2 where the lug 3 is disposed.
  • the elastic crawler 1A according to the present embodiment such a sink that may occur when the elastic crawler is formed using a mold by forming the concave portion 6 on the inner peripheral surface 2b of the crawler body 2. And the like are suppressed.
  • the recess 6 is a recess continuously extending along the lug center line O3, or each recess extending intermittently along the lug center line O3. be able to.
  • the recess center line O6 when viewed from the crawler thickness direction, can extend in a direction coinciding with or substantially parallel to the lug center line O3. In this case, the distortion generated at the time of winding can be further reduced.
  • the recess center line O6 extends in a direction coinciding with the lug center line O3 in the crawler thickness direction projection view.
  • the concave portion center line O6 extends in a direction coincident with the lug center line O3 in the crawler thickness direction projection view” means that the concave portion center line O6 is the lug center line in the crawler thickness direction projection view.
  • the recess center line O6 does not overlap with the lug center line O3 in the projection view in the crawler thickness direction, but overlaps with the lug center line O3.
  • the recessed part 6 formed in the crawler main body 2 is extended in the crawler width direction.
  • the inner peripheral surface of the elastic crawler (the inner peripheral surface 2b of the crawler main body 2) toward the crawler width direction edge 1e of the elastic crawler 1A, The deposits can be reduced.
  • the depth of the recessed part 6 is equal along a crawler width direction, it can also be changed along a crawler width direction.
  • the outer contour line 6L of the recess 6 extends substantially parallel to the outer contour line 3L of the lug 3 in the crawler thickness direction projection view. In this case, the distortion generated at the time of winding can be further reduced.
  • the outer contour shape of the concave portion 6 (outer contour line 6L of the concave portion 6) is similar to the outer contour shape of the lug 3 (outer contour line 3L of the lug 3) in the crawler thickness direction projection view.
  • the entire recess 6 is located in the lug circumferential region sandwiched between both edges of the lug 3 in the crawler circumferential direction in the crawler thickness direction projection view.
  • the concave portion 6 is not thinned in the crawler thickness direction of the elastic crawler 1 ⁇ / b> A in a portion adjacent to the lug 3 in the crawler circumferential direction other than the lug 3. That is, the elastic crawler 1 ⁇ / b> A does not become thin in the crawler thickness direction in the crawler circumferential direction other than the lugs 3.
  • the concave portion 6 has two width direction end portions 6LY extending in the crawler width direction arranged at intervals in the crawler circumferential direction, and the two width direction end portions 6LY of the concave portion 6 are included.
  • the lug 3 has two width direction edge parts 3LY extended in the crawler width direction arranged at intervals in the crawler circumferential direction, and the two width direction edge parts 3LY of the lug 3 are Each of the lugs 3 is an edge in the crawler circumferential direction.
  • the concave portion 6 has two width direction end portions 6LY, and the two width direction end portions 6LY of the concave portion 6 are projected with the two width direction end portions 3LY of the lug 3 in the crawler thickness direction projection view. It is preferable that it is a recessed part which agree
  • the recess 6 has a width W6 that is the same as or narrower than the width W3 of the lug 3 (hereinafter, also referred to as “lug width W3”) as viewed in the crawler thickness direction projection (hereinafter, “recess width W6”).
  • the concave portion center line O6 when the concave portion center line O6 extends in a direction that coincides with the lug center line O3, the concave portion center line O6 coincides with the lug center line O3 in the crawler thickness direction projection view.
  • the recess 6 includes a long recess 6A corresponding to the long lug 3A and a short recess 6B corresponding to the short lug 3B.
  • the long recess 6A is a recess longer in the crawler width direction than the short recess 6B.
  • the recess center line O6 of the long recess 6A (hereinafter also referred to as “long recess center line Oa”) is the same as the long lug center line OA in the crawler circumferential direction and the crawler width direction in the crawler plan view. It is comprised with the straight line inclined with respect to the crawler width direction.
  • the recess center line O6 of the short recess 6B (hereinafter also referred to as “short recess center line Ob”) is the crawler circumferential direction and the crawler width direction in the crawler plan view, like the short lug center line OB. It is a straight line inclined with respect to
  • the long recess center line Oa matches the long lug center line OA in the crawler thickness direction
  • the short recess center line Ob matches the short lug center line OB in the crawler thickness direction.
  • the lug width W ⁇ b> 3 extends in the crawler width direction arranged at intervals in the crawler circumferential direction in the outer contour line 3 ⁇ / b> L of the lug 3.
  • the recess width W ⁇ b> 6 is the width of the recess 6 extending in the crawler width direction arranged at intervals in the crawler circumferential direction among the outer contour line 6 ⁇ / b> L of the recess 6. It is the width between the direction end portions 6LY and the width in the direction orthogonal to the recess center line O6.
  • the lug width W3 of the long lug 3A and the short lug 3B is set to the long lug width W3A and the short lug width W3B, respectively.
  • the recess width W6 of the long recess 6A and the short recess 6B is set to the long recess width W6A and the short recess width W6B, respectively.
  • the recess 6 is a recess having a recess width W6 that is the same as the lug width W3 in the crawler thickness direction projection view.
  • the entire recess 6 is located in the lug width direction region sandwiched between both edges of the crawler width direction of the lug 3 in the crawler thickness direction projection view.
  • the thickness of the elastic crawler 1 ⁇ / b> A in the crawler thickness direction is not reduced in a portion other than the lug 3 and adjacent to the lug 3 in the crawler width direction. That is, the elastic crawler 1 ⁇ / b> A does not become thin in the crawler thickness direction in the crawler width direction other than the lugs 3. For this reason, the distortion which arises at the time of winding can be reduced, suppressing the fall of durability of 1 A of elastic crawlers.
  • the concave portion 6 has two longitudinal end portions 6LX extending in the crawler circumferential direction arranged at intervals in the crawler width direction, and the two longitudinal end portions of the concave portion 6 Each of the portions 6LX is an edge of the recess 6 in the crawler width direction.
  • the lug 3 has two length direction edge parts 3LX extended in the crawler circumferential direction arranged at intervals in the crawler width direction, and the two length direction edge parts of the lug 3 are concerned. 3LX is the crawler width direction edge of lug 3, respectively.
  • the recess 6 has two lengthwise ends 6LX, and the two lengthwise ends 6LX of the recess 6 correspond to the two lengthwise ends 3LX of the lug 3 and the crawler thickness direction. It is a recessed part which corresponds in a projection view or is located in a region between the two lengthwise ends 3LX of the lug 3.
  • the concave portion 6 is preferably a concave portion having a length direction end portion 6LX that coincides with the length direction end portion 3LX of the lug 3 in the crawler thickness direction in the crawler thickness direction projection view.
  • the recess 6 is a length located on the inner side between the length direction end 3 ⁇ / b> LX of the lug 3 and the length direction ends 3 ⁇ / b> LX of the two lugs 3 in the crawler thickness direction projection view. It is preferable that it is a recessed part which has the length direction edge part 6LX.
  • the length direction end 3LX of the lug 3 is an outside extending in the crawler circumferential direction arranged at intervals in the crawler width direction of the outer contour line 3L of the lug 3.
  • the contour line 3L As shown in FIG. 2, in the present embodiment, the lengthwise end 6 ⁇ / b> LX of the recess 6 extends in the crawler circumferential direction arranged at intervals in the crawler width direction of the outer contour line 6 ⁇ / b> L of the recess 6.
  • the outer contour line 6L As shown by a solid line and a broken line in FIG.
  • the long recess 6 ⁇ / b> A has one of the lengthwise ends 6 ⁇ / b> LX of the recess 6 along with the lengthwise ends 3 ⁇ / b> LX of the lugs 3 as viewed in the crawler thickness direction. It coincides with the crawler width direction edge 1e.
  • the long recess 6 ⁇ / b> A is located on the inner side between the two lengthwise ends 3 ⁇ / b> LX of the lug 3 in the crawler thickness direction projection view.
  • the lengthwise end portion 6LX of the recess 6 near the crawler centerline O is located on the outer side in the crawler width direction than the lengthwise end portion 3LX of the lug 3 that is also close to the crawler centerline O. .
  • the short concave portion 6B has two longitudinal end portions of the lug 3 in the longitudinal direction end portion 6LX of the concave portion 6 as viewed in the crawler thickness direction projection. Located inside the portion 3LX.
  • the lengthwise end portion 6LX of the recess 6 near the crawler centerline O is located on the outer side in the crawler width direction than the lengthwise end portion 3LX of the lug 3 that is also close to the crawler centerline O.
  • the lengthwise end 6LX of the recess 6 that is far from the crawler center line O and close to the crawler width direction edge 1e is the length of the lug 3 that is also far from the crawler center line O and close to the crawler width direction edge 1e. It is located on the inner side in the crawler width direction than the length direction end portion 3LX.
  • the outer contour shape of the concave portion 6 is an area inside the outer contour shape of the lug 3 (outer contour line 3L of the lug 3) as viewed in the crawler thickness direction. It is preferable that it is contained in. According to such an outer contour shape of the recess 6, the crawler body 2 other than the lug 3 does not have a reduced thickness in the crawler thickness direction. Thereby, the distortion which arises at the time of winding can be reduced more, suppressing the fall of durability of 1 A of elastic crawlers.
  • the outer contour shape of the concave portion 6 is the outer contour shape of the lug 3 (outer contour line 3L of the lug 3) as projected in the crawler thickness direction. And a similar shape.
  • the outer contour line 6L of the recess 6 coincides with the outer contour line 3L of the lug 3 in the crawler thickness direction projection view. That is, it is preferable that the outer contour line 6L of the concave portion 6 coincides with the outer contour line 3L of the lug 3 in the crawler thickness direction as viewed in the crawler thickness direction. In this case, the outer contour shape of the recess 6 matches the outer contour shape of the lug 3 in the crawler thickness direction projection view.
  • the elastic crawler 1A can reduce the thickness in the crawler thickness direction of the entire portion where the lugs 3 are arranged, while the crawler main body 2 other than the lugs 3 does not have a reduced thickness in the crawler thickness direction. For this reason, the distortion which arises at the time of winding can further be reduced, suppressing the fall of durability of an elastic crawler.
  • the deepest portion 6a of the recess 6 overlaps the tread surface 3a of the lug 3 in the crawler thickness direction projection view in the crawler thickness direction projection view. That is, it is preferable that the deepest portion 6 a of the recess 6 is arranged at a position overlapping the tread surface 3 a of the lug 3 in the crawler thickness direction projection view. In this case, it is possible to further reduce the distortion generated during winding while suppressing a decrease in the durability of the elastic crawler 1A.
  • FIG. 4 shows an elastic crawler 1B according to another embodiment of the present invention.
  • parts that are substantially the same as those of the elastic crawler 1A of FIGS. 1 to 3 have the same reference numerals, and description thereof is omitted.
  • FIG. 4 is a plan view showing a part of the inner peripheral surface of the elastic crawler 1B.
  • the concave portion 6 is disposed at a position where at least a part thereof overlaps the center line O3 of the lug 3 in the crawler thickness direction projection view.
  • the center line O6 of the recess 6 can extend substantially parallel to the center line O3 of the lug 3 in the crawler thickness direction projection view.
  • the center line O6 of the recess 6 can intersect with the center line O3 of the lug 3 in the crawler thickness direction projection view.
  • the center line O6 of the recess 6 is an area inside the outer contour shape of the lug 3 formed by the outer contour line 3L of the lug 3 in the projection view in the crawler thickness direction. 3 intersects with the center line O3.
  • the center line O6 of the recess 6 is an area inside the contour shape of the tread surface 3a of the lug 3 in a projected view in the crawler thickness direction, and the center line O6 of the lug 3 Cross at P.
  • the center line O6 of the recess 6 intersects the center line O3 of the lug 3 at a point P in the region outside the outer contour shape of the lug 3 in the projection view in the crawler thickness direction.
  • a part of the outer contour line 6L of the concave portion 6 is the outer contour line 3L of the lug 3. It is located outside the outer contour shape of the lug 3 to be formed.
  • the inside of the outer contour shape of the lug 3 in which the entire outer contour shape of the concave portion 6 formed by the outer contour line 6L of the concave portion 6 is formed by the outer contour line 3L of the lug 3 is used. May be located.
  • the above description merely discloses an embodiment of the present invention, and various modifications are possible according to the scope of the claims.
  • the shape of the lug 3 and the layout of the lug 3 on the outer peripheral surface 2a of the crawler main body 2 can be appropriately changed.
  • the present invention can also be applied to a so-called coreless elastic crawler that does not have a cored bar 4.
  • the present invention can be applied to, for example, an elastic crawler for traveling a vehicle such as an agricultural machine, a construction machine, or a transport vehicle.
  • 1A elastic crawler (one embodiment of the present invention)
  • 1B elastic crawler (another embodiment of the present invention)
  • 1e crawler width direction edge
  • 2 crawler body
  • 3 lug
  • 3a tread surface of lug
  • 3A long lug
  • 3B short lug
  • 3L outer contour line of lug
  • 3LX end of lug lengthwise direction (outer contour line of lug) extending in the crawler circumferential direction arranged at intervals in the crawler width direction )
  • 3LY end in the width direction of the lug (the outer contour line of the lug) extending in the crawler width direction arranged at intervals in the crawler circumferential direction
  • 4 cored bar
  • 5 tensile body
  • 6 recess
  • 6a deepest part of the concave part
  • 6A long concave part
  • 6B short concave part
  • 6L outer contour line of the concave part
  • 6LX lengthwise end of the concave part extending in the crawler

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  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
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  • Mechanical Engineering (AREA)
  • Tires In General (AREA)
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Abstract

L'invention concerne une chenille élastique dans laquelle une distorsion provoquée pendant l'enroulement est réduite. Cette chenille élastique (1) est pourvue : d'un corps (2) de chenille sans fin composé d'un matériau élastique ; d'une pluralité de pattes (3) qui sont disposées à intervalles dans la direction circonférentielle de chenille sur une surface circonférentielle extérieure (2a) du corps (2) de chenille et qui s'étendent dans la direction de largeur de chenille ; et une pluralité de parties évidées (6) qui sont disposées à intervalles dans la direction circonférentielle de chenille sur une surface circonférentielle intérieure (2b) du corps (2) de chenille. Les parties évidées (6) sont disposées dans des positions où au moins une partie de celles-ci chevauche des lignes centrales (O3) des pattes (3) comme on le voit dans une projection dans la direction d'épaisseur de chenille.
PCT/JP2018/010286 2017-04-04 2018-03-15 Chenille élastique WO2018186145A1 (fr)

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CN201880023932.4A CN110494348A (zh) 2017-04-04 2018-03-15 弹性履带
KR1020197029218A KR20190126112A (ko) 2017-04-04 2018-03-15 탄성 크롤러

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JP2017074777A JP2018176830A (ja) 2017-04-04 2017-04-04 弾性クローラ
JP2017-074777 2017-04-04

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US20200172182A1 (en) * 2017-08-16 2020-06-04 Camso Inc. Track for traction of a vehicle

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JPS61105277A (ja) * 1984-10-25 1986-05-23 Fukuyama Gomme Kogyo Kk 湿田用ゴムクロ−ラ
JP2609801B2 (ja) * 1993-10-25 1997-05-14 オーツタイヤ株式会社 弾性クローラ
JPH09188281A (ja) * 1995-12-31 1997-07-22 Bridgestone Corp 皿型ゴムクロ−ラ
JP2016144981A (ja) * 2015-02-06 2016-08-12 株式会社クボタ 弾性クローラ

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JPH04283178A (ja) * 1991-03-12 1992-10-08 Ohtsu Tire & Rubber Co Ltd :The 弾性履帯
JP3483787B2 (ja) * 1998-12-14 2004-01-06 住友ゴム工業株式会社 弾性クローラ
JP5566866B2 (ja) * 2010-11-25 2014-08-06 株式会社ブリヂストン 弾性クローラ

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JPS61105277A (ja) * 1984-10-25 1986-05-23 Fukuyama Gomme Kogyo Kk 湿田用ゴムクロ−ラ
JP2609801B2 (ja) * 1993-10-25 1997-05-14 オーツタイヤ株式会社 弾性クローラ
JPH09188281A (ja) * 1995-12-31 1997-07-22 Bridgestone Corp 皿型ゴムクロ−ラ
JP2016144981A (ja) * 2015-02-06 2016-08-12 株式会社クボタ 弾性クローラ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200172182A1 (en) * 2017-08-16 2020-06-04 Camso Inc. Track for traction of a vehicle

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KR20190126112A (ko) 2019-11-08
JP2018176830A (ja) 2018-11-15
CN110494348A (zh) 2019-11-22

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