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WO2001089913A1 - Courroie de chenille en caoutchouc munie de cables translateurs circonferentiels - Google Patents

Courroie de chenille en caoutchouc munie de cables translateurs circonferentiels Download PDF

Info

Publication number
WO2001089913A1
WO2001089913A1 PCT/US2001/010750 US0110750W WO0189913A1 WO 2001089913 A1 WO2001089913 A1 WO 2001089913A1 US 0110750 W US0110750 W US 0110750W WO 0189913 A1 WO0189913 A1 WO 0189913A1
Authority
WO
WIPO (PCT)
Prior art keywords
ply portion
track belt
bias
longitudinal direction
endless elastomeric
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.)
Ceased
Application number
PCT/US2001/010750
Other languages
English (en)
Inventor
Keith D. Fischer
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.)
Caterpillar Inc
Original Assignee
Caterpillar 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 Caterpillar Inc filed Critical Caterpillar Inc
Priority to AU2001251262A priority Critical patent/AU2001251262A1/en
Publication of WO2001089913A1 publication Critical patent/WO2001089913A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G1/00—Driving-belts
    • F16G1/06—Driving-belts made of rubber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G1/00—Driving-belts
    • F16G1/06—Driving-belts made of rubber
    • F16G1/08—Driving-belts made of rubber with reinforcement bonded by the rubber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G1/00—Driving-belts
    • F16G1/06—Driving-belts made of rubber
    • F16G1/08—Driving-belts made of rubber with reinforcement bonded by the rubber
    • F16G1/12—Driving-belts made of rubber with reinforcement bonded by the rubber with metal reinforcement

Definitions

  • This invention relates to an endless track belt, and more particularly to an elastomeric track belt for heavy mobile equipment and having improved tear strength and decreased tread bar wear.
  • the second and third plies are bias plies of wire cable with angles equal and opposite to one another.
  • An optional fourth ply whose direction was perpendicular, i.e. 90°, was also disclosed.
  • an endless elastomeric track belt for heavy mobile equipment provides improved tear strength for the track belt and decreased tread bar wear.
  • the track belt includes an endless body having an interior surface and an exterior surface .
  • a first bias ply portion has at least one cable oriented at an angle to the longitudinal direction of the belt.
  • a second bias ply portion has at least one cable oriented at an angle to the longitudinal direction and is located radially outward of the first bias ply portion. The second bias ply portion is opposite in direction to the first bias ply portion.
  • a third ply portion of at least one spirally wrapped cable is oriented in a substantially parallel relation to the longitudinal direction, thus is termed the 0° ply.
  • Fig. 1 is a fragmentary side elevational view of a first embodiment of an endless track belt of the present invention and shown;
  • Fig. 2a is a perspective view of the belt of the first embodiment shown in Fig. 1 with the ply portions broken away in layers;
  • Fig. 2b is a perspective view similar to Fig 2a but showing a second embodiment of the belt with the ply portions broken away and shown in layers;
  • Fig. 2c is a perspective view similar to Fig
  • Fig. 3 is an isometric view of a rubber- belted undercarriage showing an endless track belt of the present invention entrained about a drive wheel, midwheels, and an idler wheel.
  • a track undercarriage unit 8 is shown at Fig. 3, which has an elastomeric or rubber track belt embodying the principles of the present invention generally shown in Fig. 1.
  • Such track undercarriage 8 is typically employed for supporting and, in some instances, propelling a work vehicle, such as an agricultural tractor, asphalt paving machine, military vehicles, hauling units and the like (not shown) .
  • the rubber belted track undercarriage 8 also typically includes a drive wheel 30 at one end, an idler wheel 34 at the opposite end and one or more lower roller wheels or midwheels 36 mounted between the drive wheel 30 and the idler wheel 34.
  • the rubber track belt 10 is entrained about the drive and idler wheels and is in supported engagement with the roller wheels 36.
  • the track belt includes a endless body extending in a longitudinal direction (or along a longitudinal axis) 16.
  • the body has an exterior surface 26 and an interior surface 12.
  • the body also preferably has a plurality of longitudinally spaced guide blocks 33 for maintaining the track centered on the wheels during operation, which extend radially inwardly from the interior surface 12.
  • a plurality of spaced-apart ground engaging cleats or tread bars 28 are preferably provided on the exterior surface 26 to provide greater traction with the ground surface.
  • the track body is constructed with multiple steel reinforced plies, including at least an inner or first ply portion 14, a second ply portion 20, and a third ply portion 21.
  • first and second plies are bias plies, 14, 20, in which the steel cables of each of such plies are disposed at opposite angles to one another and at an angle to the longitudinal axis 16 of the body.
  • the first bias ply 14 has at least one cable therein and is disposed at a positive angle of about between 25 and 75 degrees, and more preferably 40 to 70 degrees, while the second bias ply is disposed at a negative angle of about between -25 and -75 degrees, and more preferably -40 and -70, degrees from the longitudinal axis.
  • the first bias ply portion 14 is located inboard adjacent the interior surface 12 of the body, while the second bias ply portion 20 is located adjacent, but radially outboard of the first ply.
  • the third ply portion 21 is disposed radially outward from the second bias ply portion 20.
  • the third ply portion 21 is a spirally wrapped cable ply, also known as a 0° ply, which extends in or substantially parallel to the longitudinal direction 16.
  • a second embodiment of the present invention is shown in Fig. 2b, wherein like elements have the same reference numerals.
  • the track belt 10 is provided with a fourth ply portion 24.
  • the fourth ply portion 24 has at least one cable that is laid nearly perpendicularly or about 90° to the longitudinal axis 16 of the body. Utilization of the fourth ply portion 22 is the preferred embodiment of the invention because the fourth ply portion 24 protects the third 0° ply portion 21 from outside damage due to debris, rock, or concrete, especially in industrial applications.
  • FIG. 2c A third embodiment of the present invention is shown in Fig. 2c, wherein the elements have the same reference numerals.
  • the track belt 10 is provided with a fourth ply portion 24 radially inward from the third 0° ply portion 21.
  • the third 0° ply portion 21 is placed on the outer diameter of the track belt 10 which provides the minimum tread bar wear while maintaining maximum tear strength of the track belt 10.
  • a final layer of rubber is laid radially outward of the third bias ply portion 21 or the fourth ply portion 24, depending upon the chosen embodiment, to form an exterior surface 26.
  • a drive wheel 30 frictionally transmits power to the track belt 10.
  • a plurality of upraised cleats or tread bars 28 move along the circumference of the track belt 10, continuously engaging and disengaging with the ground.
  • the track belt 10 of the present invention is typically produced on a cylindrical mandrel by applying one or more layers of an elastomeric or rubber either directly onto the mandrel or onto an impression fabric which has been applied to the mandrel to form an interior surface 12 of the belt .
  • a plurality of ground engaging cleats or tread bars 28 extend outwardly from the exterior surface 24 of the body and are preferably integrally formed with the elastomeric material of the belt body for penetrating the earth and enhancing the tractive capability of the vehicle.
  • the elastomeric or rubber- like character of the tread bars 28 permits a work vehicle to travel over improved road surfaces without damage thereto.
  • the tread bars 28 can be any one of a number of natural or synthetic polymers well known in the art and compounded with the usual rubber chemicals to provide adhesion to the cable reinforcement and to vulcanize into a unitary body.
  • a plurality of lateral alignment members or guide blocks 33 extend inwardly from the interior surface 12 and are preferably integrally formed with the elastomeric material of the track belt 10. These configurations are well known to those skilled in the art .
  • the first layer of elastomeric or rubber material is followed by the first bias ply portion.
  • the first bias ply portion 14 is laid at an angle ⁇ to the longitudinal direction 16.
  • the second ply is then applied upon the first ply and is laid on an angle ⁇ to the longitudinal direction 16 of the interior surface 12.
  • This second bias ply portion 20 is disposed in a direction opposite to the first ply or from its angle ⁇ .
  • the structure of the track belt 10 with the 0° ply portion 21 being relocated toward the outer diameter of the track belt 10 provides several advantages. First, it increases the tear strength of the track belt 10 when a rock or debris is ingested between the interior surface 12 of the track belt 10 and the drive wheel 30. If the 0° ply portion 21 is on the interior surface of the track belt 10 and a rock gets ingested, the high stress on the 0° cables may cause a break in the cable, which results in propagation of the tear across the width of the 0° ply portion 21 immobilizing the track belt 10. Relocation of the 0° ply portion 21 radially outward of the first bias ply portion 14 and the second bias ply portion 20 cushions and protects the track belt 10 from tear propagation.
  • a second advantage of the relocation of the 0° ply portion 21 toward the exterior surface 26 is the decreased wear of the tread bars 28 when travelling on a paved surface.
  • the tread bars 28 wore at the tip of the tread bars 32 due to scuffing which occurred during engagement and disengagement of the of the tread bars from the pavement 31.
  • the scuffing was caused by the stretching and relaxing of the tread bars 28 of the track belt 10 while in contact with the pavement.
  • the tread bars 28 stretched as they curled around the drive wheel 30 or idler wheel 34 because they were located a greater distance from the 0° ply portion 21, which acted as the neutral bending axis of the track belt 10.
  • the 0° ply portion 21 is moved radially outward toward the exterior surface 26 and thus, the tread bars 28 will be minimally stretched. This relocation greatly reduces scuffing because it is the stretching and relaxing of the tread bars which causes the tips of the tread bars 32 to drag during engagement or disengagement from the pavement .

Landscapes

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

Abstract

L'invention concerne une courroie de chenille élastomérique sans fin destinée à équiper des équipements mobiles lourds, dont le câble de degré zéro est uniquement déplacé radialement vers l'extérieur à partir du diamètre intérieur de la courroie de chenille (10). Cette construction confère à la courroie de chenille (10) une meilleure résistance au déchirement et à l'usure de la bande de roulement.
PCT/US2001/010750 2000-05-22 2001-04-03 Courroie de chenille en caoutchouc munie de cables translateurs circonferentiels Ceased WO2001089913A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001251262A AU2001251262A1 (en) 2000-05-22 2001-04-03 Rubber track belt with relocated circumferential cables

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US57640300A 2000-05-22 2000-05-22
US09/576,403 2000-05-22

Publications (1)

Publication Number Publication Date
WO2001089913A1 true WO2001089913A1 (fr) 2001-11-29

Family

ID=24304275

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/010750 Ceased WO2001089913A1 (fr) 2000-05-22 2001-04-03 Courroie de chenille en caoutchouc munie de cables translateurs circonferentiels

Country Status (3)

Country Link
AR (1) AR028066A1 (fr)
AU (1) AU2001251262A1 (fr)
WO (1) WO2001089913A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1251064A4 (fr) * 2000-01-19 2003-06-25 Bridgestone Corp Chenille en caoutchouc
EP1388488A1 (fr) * 2002-08-07 2004-02-11 Otico Câble de renforcement pour chenille souple sans fin
FR2845344A1 (fr) * 2002-10-07 2004-04-09 Otico Chenille a bande souple sans fin avec nappes de renforcement, en particulier pour vehicules tout terrain
US7063395B2 (en) 2003-03-07 2006-06-20 Camoplast Inc. Laterally reinforced endless belt track
CN105715745A (zh) * 2016-03-25 2016-06-29 三力士股份有限公司 一种子午帘布结构的农机带
WO2019105899A1 (fr) * 2017-11-28 2019-06-06 Contitech Transportbandsysteme Gmbh Renforcement de trajet de roue de chenille en caoutchouc
JP2021094913A (ja) * 2019-12-13 2021-06-24 株式会社ブリヂストン 弾性クローラ

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987006204A1 (fr) * 1986-04-14 1987-10-22 Caterpillar Inc. Courroie de transmission elastomere sans fin
US5211609A (en) 1992-02-06 1993-05-18 The Goodyear Tire & Rubber Company Elastomeric drive belt
EP0742382A2 (fr) * 1995-05-11 1996-11-13 The Goodyear Tire & Rubber Company Renfort pour une courroie de transmission en élastomère et courroie de transmission en élastomère le comprenant

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987006204A1 (fr) * 1986-04-14 1987-10-22 Caterpillar Inc. Courroie de transmission elastomere sans fin
US5211609A (en) 1992-02-06 1993-05-18 The Goodyear Tire & Rubber Company Elastomeric drive belt
EP0742382A2 (fr) * 1995-05-11 1996-11-13 The Goodyear Tire & Rubber Company Renfort pour une courroie de transmission en élastomère et courroie de transmission en élastomère le comprenant

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1251064A4 (fr) * 2000-01-19 2003-06-25 Bridgestone Corp Chenille en caoutchouc
EP1388488A1 (fr) * 2002-08-07 2004-02-11 Otico Câble de renforcement pour chenille souple sans fin
FR2843361A1 (fr) * 2002-08-07 2004-02-13 Otico Cable de renforcement pour chenille souple sans fin
US7083242B2 (en) 2002-10-07 2006-08-01 Otico Endless flexible track with reinforcing layers for all-terrain vehicles
EP1407960A1 (fr) * 2002-10-07 2004-04-14 Otico Chenille à bande souple sans fin avec nappes de renforcement, en particulier pour véhicules tout terrain
FR2845344A1 (fr) * 2002-10-07 2004-04-09 Otico Chenille a bande souple sans fin avec nappes de renforcement, en particulier pour vehicules tout terrain
US7063395B2 (en) 2003-03-07 2006-06-20 Camoplast Inc. Laterally reinforced endless belt track
CN105715745A (zh) * 2016-03-25 2016-06-29 三力士股份有限公司 一种子午帘布结构的农机带
WO2019105899A1 (fr) * 2017-11-28 2019-06-06 Contitech Transportbandsysteme Gmbh Renforcement de trajet de roue de chenille en caoutchouc
AU2018377964B2 (en) * 2017-11-28 2022-04-14 Loc Performance Products, Llc Rubber track wheel path reinforcement
EP4428017A3 (fr) * 2017-11-28 2025-01-29 Loc Performance Products, LLC Renforcement de trajectoire de roue de chenille en caoutchouc
JP2021094913A (ja) * 2019-12-13 2021-06-24 株式会社ブリヂストン 弾性クローラ
JP7509532B2 (ja) 2019-12-13 2024-07-02 株式会社ブリヂストン 弾性クローラ

Also Published As

Publication number Publication date
AR028066A1 (es) 2003-04-23
AU2001251262A1 (en) 2001-12-03

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