EP4601935A1 - Chenille à bords irréguliers pour la traction d'un véhicule - Google Patents

Chenille à bords irréguliers pour la traction d'un véhicule

Info

Publication number
EP4601935A1
EP4601935A1 EP23875994.8A EP23875994A EP4601935A1 EP 4601935 A1 EP4601935 A1 EP 4601935A1 EP 23875994 A EP23875994 A EP 23875994A EP 4601935 A1 EP4601935 A1 EP 4601935A1
Authority
EP
European Patent Office
Prior art keywords
track
ground
carcass
engaging
lateral edges
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP23875994.8A
Other languages
German (de)
English (en)
Other versions
EP4601935A4 (fr
Inventor
Jean-Luke Noel
Paul VANASSE
Sylvain Cloutier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Camso Inc
Original Assignee
Camso Inc
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 Camso Inc filed Critical Camso Inc
Publication of EP4601935A1 publication Critical patent/EP4601935A1/fr
Publication of EP4601935A4 publication Critical patent/EP4601935A4/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B62D55/244—Moulded in one piece, with either smooth surfaces or surfaces having projections, e.g. incorporating reinforcing elements
    • 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
    • B62D55/26—Ground engaging parts or elements

Definitions

  • Another common problem of the existing tracks is a relative high rolling resistance, i.e., an energy consumption required to move the track around the track-engaging assembly.
  • reducing the thickness of the carcass detrimentally reduces a durability of the track.
  • a track for traction of a vehicle the track being mountable around a track-engaging assembly of the vehicle, the track-engaging assembly comprising a plurality of wheels, the track having a longitudinal direction and comprising: a carcass comprising an outer ground-engaging side and an opposed inner wheel-facing side, first and second lateral edges extending between the outer and inner sides, the first and second lateral edges being spaced apart from each other in a width direction of the track; and wherein at least one of the first and second lateral edges comprises ground-engaging protrusions.
  • a track for traction of a vehicle is mountable around a track-engaging assembly comprising a plurality of wheels.
  • the track is elastomeric to flex around the track-engaging assembly.
  • the track comprises: a carcass comprising a ground-engaging outer surface for engaging a ground, an inner surface opposite to the ground-engaging outer surface, a first lateral edge extending from the ground-engaging outer surface to the inner surface, and a second lateral edge extending from the ground-engaging outer surface to the inner surface and opposite to the first lateral edge of the track; and a plurality of traction projections projecting from the ground-engaging outer surface.
  • the first lateral edge is uneven in a longitudinal direction of the track.
  • a vehicle track mountable around a track-engaging assembly of a vehicle comprising: a carcass comprising a ground-engaging outer surface for engaging a ground upon rotation about the track-engaging assembly, an opposed inner surface, and first and second lateral edges extending between the outer and inner surfaces, the first and second lateral edges being spaced apart from each other in a width direction of the track; wherein at least one of the first and second lateral edges comprises a plurality of ground-engaging formations spaced apart from one another along a longitudinal direction of the vehicle track.
  • a track for traction of a vehicle is mountable around a track-engaging assembly comprising a plurality of wheels.
  • the track is elastomeric to flex around the track-engaging assembly.
  • the track comprises: a carcass comprising a ground-engaging outer surface for engaging a ground, an inner surface opposite to the ground-engaging outer surface, and lateral edges opposite one another and extending from the groundengaging outer surface to the inner surface; and a plurality of traction projections projecting from the ground-engaging outer surface.
  • Each lateral edge comprises a plurality of recesses that are spaced from one another in a longitudinal direction of the track.
  • a track for traction of a vehicle is mountable around a track-engaging assembly comprising a plurality of wheels.
  • the track is elastomeric to flex around the track-engaging assembly.
  • the track comprises: a carcass comprising a ground-engaging outer surface for engaging a ground, an inner surface opposite to the ground-engaging outer surface, and lateral edges opposite one another and extending from the groundengaging outer surface to the inner surface; and a plurality of traction projections projecting from the ground-engaging outer surface.
  • the track is free of stiffening bars embedded in the carcass, extending transversally to a longitudinal direction of the track, and spaced from one another in the longitudinal direction of the track.
  • Each lateral edge comprises a plurality of recesses that are spaced from one another in the longitudinal direction of the track and extend to at least one of the ground-engaging outer surface and the inner surface.
  • Figure 1 shows an example of a vehicle comprising a plurality of track systems, each track system comprising a track-engaging assembly with a track according to an embodiment of the disclosure mounted thereto;
  • Figure 2 shows a perspective view of one of the track systems of Figure 1 ;
  • Figures 4 to 8 show respectively an outer perspective view, an outer elevation view, an inner elevation view, a cross sectional view in a width direction thereof, and a side elevation view of a portion of the track of Figure 3;
  • Figure 10 shows a partial front view of a track system in accordance with an embodiment in relationship with a soil comprising a sidehill;
  • Figures 11 to 15 show different possible embodiments of a cross-section of ground-receiving recess of a track in accordance with the present disclosure, considered in a thickness direction of the track;
  • Figures 16 to 20 show an outer perspective view of a portion of different possible embodiments of the track in accordance with the present disclosure
  • Figures 21 to 23 show cross-sectional views of embodiments of the track in accordance with the present, the tack comprising a layer of reinforcing fabric, considered in longitudinal and width directions of the track; and
  • the vehicle 10 might be a military articulated vehicle (e.g., an armored personnel carrier).
  • the vehicle 10 comprises a plurality of track systems 16 including tracks 22 for traction (four, in the embodiment shown).
  • each of front and rear units 8, 9 of the vehicle 10 comprises at least one pair of the track systems 16.
  • the military vehicle 10 may be any other type of military vehicle (e.g., a military vehicle including a single cabin, being not articulated, etc.).
  • the ground 11 supporting the vehicle 10 may be a soft terrain (e.g., snow, mud and/or sludge) and/or may comprise a sidehill.
  • the vehicle 10 can also be “reading”, i.e., travelling on a road (i.e., a paved road having a hard surface of asphalt, concrete, gravel, or other pavement), such as between off-road operations.
  • vehicle 10 illustrated in Figure 1 is an articulated military vehicle comprising two units, different types of military vehicles configured differently (e.g., having a different number of units, being non-articulated, having a different number of track systems, etc.) may implement improvements based on principles disclosed herein.
  • the vehicle 10 may be an agricultural vehicle (e.g., a tractor, combine harvester, another type of harvester, grain carts, sprayer, or any other type of agricultural vehicle, autonomous or manned) for performing agricultural work on an agricultural field (e.g., soil), an industrial vehicle such as a construction vehicle (e.g., a loader, a telehandler, a bulldozer, an excavator, etc.) for performing construction work or a forestry vehicle (e.g., a feller-buncher, a tree chipper, a knuckle boom loader, etc.) for performing forestry work, an all-terrain vehicle (ATV), a snowmobile, or any other vehicle operable off paved roads.
  • an agricultural vehicle e.g., a tractor, combine harvester, another type of harvester, grain carts, sprayer, or any other type of agricultural vehicle, autonomous or manned
  • an agricultural vehicle e.g., a tractor, combine harvester, another type of harvester, grain cart
  • the tracks 22 of the vehicle 10 are configured to increase a number and/or an extent of surfaces of the track 22 that engage a ground when the vehicle 10 is travelling on a soft terrain and/or on a sidehill, while reducing a rolling resistance of the track 22, such as, notably, to enhance traction, to reduce a total weight of the vehicle 10, to reduce an energy consumption of the vehicle 10, and/or to increase an effective power of the vehicle 10.
  • the inner side 45 (or wheel-facing side or wheel-engaging face) faces the wheels 24, 26, 28 of the track-engaging assembly, while the ground-engaging outer side 47 is configured to engage the ground upon rotation of the track around the trackengaging assembly.
  • a top run 65 of the track 22 extends between longitudinal ends 57, 59 (respectively front and rear ends) of the track system 16 and over the wheels 24, 26, 28, while a bottom run 66 of the track 22 extends between the longitudinal ends 57, 59 of the track system 16 and under the wheels 24, 26, 28.
  • the track 22 is at least partially elastomeric, i.e., comprises elastomeric material, to be flexible around the track-engaging assembly 21.
  • the elastomeric material of the track 22 can include any polymeric material with suitable elasticity.
  • the elastomeric material of the track 22 includes rubber.
  • Various rubber compounds may be used and, in some cases, different rubber compounds may be present in different areas of the track 22.
  • the elastomeric material of the track 22 may include another elastomer in addition to or instead of rubber (e.g., polyurethane elastomer).
  • a shape of the periphery of the drive/guide lugs 48 and/or dimensions thereof might differ from each other.
  • a shape of the periphery of the inner ones (considered with regard to a central axis of the track) of rows 84 of guide lugs 48 may be different from a shape of the periphery of the drive/guide lugs 48 of the outer ones of the rows 84.
  • each traction lug 58 has a front-to- rear dimension LL in the longitudinal direction of the endless track 22 and a side-to- side dimension Lw in the widthwise direction of the endless track 22.
  • the front-to-rear dimension LL may be a width of the traction lug 58 while the side-to- side dimension Lw may be a length of the traction lug 58.
  • the front-to- rear dimension LL may be a length of the traction lug 58 while the side-to-side dimension Lw may be a width of the traction lug 58.
  • the front-to- rear dimension LL and the side-to-side dimension Lw may be substantially the same (i.e. , the traction lug might have a substantially square cross-section).
  • the traction lug 58 also has a height H (considered in a direction corresponding to the thickness of the track).
  • the carcass 36 comprises lateral edges 102 extending from the inner surface 32 of the carcass 36 to the ground-engaging outer surface 31 of the carcass 36 (i.e., between the inner and outer surfaces of the carcass) on each side of the carcass 36 considered along a width thereof.
  • the lateral edges 102 may comprise a first lateral edge and a second lateral edge opposite to the first lateral edge.
  • the first lateral edge 49i of the track 22 faces and is at least partially formed by the first lateral edge of the carcass 36 and the second lateral edge 682 of the track 22 faces and is at least partially formed by the second lateral edge of the carcass 36.
  • the lateral edges 102 of the carcass 36 define the first and second lateral edges 49i, 492 of the track 22.
  • the recesses 112 may also increase cooling capabilities of the track 22.
  • the recesses 112 may increase a surface area of the track 22 that is exposed to an environment of the vehicle 10 and may increase a heat transfer between the track 22 and its environment.
  • Such track cooling effect may diminish probabilities of occurrence of overheat of the carcass 36 and may thus increase a life of the track 22.
  • the lateral edges 102 of the carcass 36, including the tractive (or groundengaging) formations 110, including the recesses 112 and/or the projections 114, may be manufactured in any suitable fashion.
  • the recesses 112 may be formed by machining/punching out the carcass 36 after the molding of the carcass 36.
  • the recesses 112 and/or the projections 114 may be formed during the molding of the carcass 36.
  • the projections 114 may be formed by adding material to the carcass 36 after molding of the carcass 36. For instance, this may be achieved by additive manufacturing, e.g., 3D printing.
  • each lateral edge 102 may comprise more than one recess 112 between consecutive ones of the traction projection rows 82, considered along the longitudinal direction of the track.
  • the lateral edge 102 may comprise at least 3 recesses between consecutive ones of the traction projection rows 82, in some embodiments at least 5 recesses between consecutive ones of the traction projection rows 82, in some embodiments at least 8 recesses between consecutive ones of the traction projection rows 82, and in some embodiments even more (e.g., at least 10 recesses between consecutive ones of the traction projection rows 82).
  • the lateral edges 102 comprise a surface texture 122, for instance at least partially delimiting at least one of the lateral ground-receiving recesses formed therein.
  • the surface texture 122 may define a surface pattern which, in this case, comprises linear texture elements.
  • the surface texture 122 comprises bumps 124, i.e., relatively small protrusions, extending in at least one of the width direction and the thickness direction of the track 22 and distributed in the longitudinal direction of the track 22.
  • the bumps 124 may have a relatively small height.
  • the surface texture 122 may comprise any suitable number of bumps 124.
  • the lateral edge 102 may comprise at least about 5 bumps 124 between consecutive ones of the traction projection rows 82, in some embodiments at least 8 bumps 124 between consecutive ones of the traction projection rows 82, in some embodiments at least 10 bumps 124 between consecutive ones of the traction projection rows 82, and in some embodiments even more (e.g., at least 12 bumps 124 between consecutive ones of the traction projection rows 82).
  • the bumps 124 may be indicative of a wear of the track 22.
  • the bumps 124 may be formed during molding of the track 22.
  • the bumps 124 may be configured to convey to a user or potential buyer that the tractive formations 110 were formed during molding of the track and/or that the track 22 is new.
  • At least one of the lateral edges 681, 682 of the layer of reinforcing fabric 43 may be uneven (i.e. , non-flat I non-straight) in the longitudinal direction of the track 22, for instance may be curved.
  • the lateral edges 681, 682 may define a plurality of layer recesses 127 substantially aligned with (i.e., in register with) the recesses 112 of the lateral edges 102 of the carcass 36 in the longitudinal direction of the track 22.
  • At least a portion of one of the first and second edges of the reinforcing layer might be uncovered at at least one of the ground-receiving recesses formed in the corresponding one of the first and second lateral edges of the track 22.
  • at least a portion of one of the first and second lateral edges of the reinforcing layer extends in at least one of the groundengaging protrusions of the corresponding one of the first and second lateral edges of the track.
  • the track in accordance with the above-described embodiments may be used, as shown in Figure 9, on a soft terrain or ground 11 .
  • tracks may sink in the soft terrain and the traction provided by prior-art tracks may be reduced because of the soft ground matter.
  • the track 22 may be shaped and dimensioned such that, when the vehicle 10 is on soft terrain, the lateral edges 102 and the ground-receiving recesses and/or ground-engaging protrusions thereof engage the ground of the soft terrain, thus increasing traction of the vehicle 10.
  • the ground of the soft terrain may comprise snow, mud, sludge, sand, etc.
  • the ground 11 may comprise a sidehill having a slope 0.
  • the track 22 may be shaped and dimensioned such that, when the vehicle 10 is travelling on the sidehill, the sidehill having a downhill direction towards one of the lateral sides 29i, 292 of the track 22 and an uphill direction towards the other one of the lateral sides 29i, 292 of the track 22, one of the lateral edges 102 engages the ground 11 .
  • the lateral edge 102 engaging the ground 11 may correspond to the downhill direction of the sidehill.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

La présente divulgation concerne une chenille pour la traction d'un véhicule, la chenille pouvant être montée autour d'un ensemble de mise en prise de chenille du véhicule, l'ensemble de mise en prise de chenille comprenant une pluralité de roues, la chenille ayant une direction longitudinale et comprenant une carcasse comprenant un côté de mise en prise avec le sol externe, un côté faisant face à la roue interne opposé, et des premier et second bords latéraux s'étendant le long de la direction longitudinale entre les côtés externe et interne, les premier et second bords latéraux étant espacés l'un de l'autre dans une direction de largeur de la piste ; des évidements de réception de sol sont formés sur au moins l'un des premier et second bords latéraux.
EP23875994.8A 2022-10-12 2023-10-11 Chenille à bords irréguliers pour la traction d'un véhicule Pending EP4601935A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202263379203P 2022-10-12 2022-10-12
PCT/CA2023/051344 WO2024077383A1 (fr) 2022-10-12 2023-10-11 Chenille à bords irréguliers pour la traction d'un véhicule

Publications (2)

Publication Number Publication Date
EP4601935A1 true EP4601935A1 (fr) 2025-08-20
EP4601935A4 EP4601935A4 (fr) 2026-02-18

Family

ID=90668444

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23875994.8A Pending EP4601935A4 (fr) 2022-10-12 2023-10-11 Chenille à bords irréguliers pour la traction d'un véhicule

Country Status (3)

Country Link
EP (1) EP4601935A4 (fr)
CA (1) CA3265001A1 (fr)
WO (1) WO2024077383A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011118421A1 (de) * 2011-11-12 2013-05-16 Diehl Defence Land Systems Gmbh Gleiskette oder Gleiskettensegment
KR101508135B1 (ko) * 2014-09-23 2015-04-07 한국카모플라스트(주) 배토성이 향상된 습전용 듀오 크로라
KR101788659B1 (ko) * 2015-07-16 2017-11-15 동일고무벨트주식회사 러버트랙
JPWO2017017958A1 (ja) * 2015-07-30 2018-05-24 株式会社ブリヂストン 弾性クローラ
US10392060B2 (en) * 2016-01-07 2019-08-27 Camso Inc. Track system for traction of a vehicle
US20190344842A1 (en) * 2017-01-20 2019-11-14 Bridgestone Corporation Rubber crawler, rubber crawler mold, and method of producing rubber crawler
US20190233032A1 (en) * 2018-01-31 2019-08-01 Srj, Inc. Vehicle track core

Also Published As

Publication number Publication date
EP4601935A4 (fr) 2026-02-18
WO2024077383A1 (fr) 2024-04-18
CA3265001A1 (fr) 2024-04-18

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