WO2007126116A1 - 芯金レスゴムクロ-ラ - Google Patents
芯金レスゴムクロ-ラ Download PDFInfo
- Publication number
- WO2007126116A1 WO2007126116A1 PCT/JP2007/059393 JP2007059393W WO2007126116A1 WO 2007126116 A1 WO2007126116 A1 WO 2007126116A1 JP 2007059393 W JP2007059393 W JP 2007059393W WO 2007126116 A1 WO2007126116 A1 WO 2007126116A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rubber
- rubber crawler
- less
- bias
- elastic body
- Prior art date
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
- B62D55/253—Tracks of continuously flexible type, e.g. rubber belts having elements interconnected by one or more cables or like elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
Definitions
- the present invention is useful for improving a coreless rubber crawler (hereinafter simply referred to as a rubber crawler), and in particular, it is intended to provide a rubber crawler with improved torsional rigidity and lateral rigidity. is there.
- Patent Document 1 discloses a technique for improving the torsional rigidity and lateral rigidity of a rubber crawler.
- a noise cord is embedded as a reinforcing layer in addition to the main cord, and the noise cord has a structure in which two sheets in opposite directions are overlapped.
- the torsional rigidity and lateral rigidity are very advantageous for the anti-derailing performance and durability of the rubber crawler.
- the floating of the machine does not wind as designed and rotates, and as a result, the performance of the machine equipped with the rubber crawler increases.
- a rubber crawler is wound around the sprocket, the ability to follow the sprocket is impaired, and as a result, tooth skipping may occur, causing the drive protrusion to be destroyed.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2002-178965
- Patent Document 2 Japanese Patent Laid-Open No. 2001-010556
- An object of the present invention is to improve the torsional rigidity and lateral rigidity of a rubber crawler and provide an excellent rubber crawler as a traveling device.
- an endless rubber elastic body a steel cord embedded in the longitudinal direction of the rubber elastic body, and an inner peripheral surface directed in the longitudinal direction at constant intervals are provided.
- a metal core-less rubber crawler including a formed rubber protrusion and a rubber lug formed on an outer peripheral surface, and extends in opposite directions to the left and right portions in the width direction of the metal core-less rubber crawler.
- Bias cords are arranged, and a part of the bias cords extending in opposite directions to each other is overlapped immediately below the rubber protrusion to define an overlapped portion, and the overlapped portion includes a central portion in the width direction of the rubber protrusion.
- a coreless rubber crawler configured to cover part of the left and right sides.
- a large number of bias cords extending in opposite directions are embedded in the left and right portions of the metal core-less rubber crawler in the width direction, and extend obliquely with respect to the circumferential direction of the metal core-less rubber crawler. . That is, the bias cord extending to the right side portion and the bias code extending to the left side portion are inclined in opposite directions.
- the noise cord may be embedded radially outside the steel cord embedded in the rubber elastic body. Further, the bias cord may be disposed away from the steel cord force.
- the bias cord constituting the overlapped portion may be embedded in a position (depth) different from the bias cord other than the overlapped portion in the thickness direction of the rubber elastic body!
- bias cords constituting the overlapping portion and extending in opposite directions may be embedded at positions separated in the thickness direction of the rubber elastic body. Furthermore, the bias cords in the portions other than the overlapping portion are embedded in positions (depths) between the bias cords extending in the opposite directions to each other in the thickness direction of the rubber elastic body. It will be.
- the overlapping portion may be formed over the entire width of the rubber protrusion, and further, the portion corresponding to the inner end portion of the outer peripheral surface of the wheel around which the coreless rubber crawler is wound (the portion in contact with the wheel) It may extend to the vicinity of the inner end).
- the overlapping portion may be formed to have a width of 20% or more of the width of the rubber protrusion. If the width of the rubber protrusion is less than 20%, sufficient effects cannot be obtained, and there may be a case where the rubber protrusion is bent.
- the overlapping portions may be formed such that overlapping portions located on the left and right sides of the center position in the width direction of the rubber protrusion are within the range of 2: 1 to 1: 2 in the width ratio. This is because when the overlap portion is biased to either side beyond this range, the bias cord may be bent, and the bias cord may be fatigued to cause cutting. Furthermore, it is preferable to form the overlapping portion so that the center position in the width direction coincides with the center position in the width direction of the rubber projection in the width direction of the coreless rubber crawler.
- the rubber protrusion has a side wall surface inclined with respect to the radial direction and protrudes from the inner peripheral surface of the rubber elastic body.
- a plurality of protrusions formed on the inner surface of the rubber elastic body may be provided in the width direction. In this case, an overlap portion is formed immediately below the protrusion located at the center.
- the present invention has the above-described configuration, thereby improving the torsional rigidity and lateral rigidity of the rubber crawler, and bending even when wound around a sprocket or the like as a traveling device. This is a wrapping that is almost as designed with a high rigidity and a rubber crawler with little tooth skipping.
- FIG. 1 is a cross-sectional view in the width direction of a rubber track of the present invention.
- FIG. 2 is a partially cut plan view of the rubber crawler in FIG.
- FIG. 3 is a side view of the rubber crawler according to the present invention when it is wound around a sprocket.
- FIG. 4 is a partially cut plan view of the rubber crawler of the present invention when three rubber protrusions are provided in the width direction.
- a noisy cord reverse in the left-right width direction is embedded at the same horizontal position in the rubber elastic body, and at the center thereof. It is a rubber crawler superposed along the longitudinal direction.
- This overlapping part corresponds to the part directly below the rubber protrusion formed on the inner peripheral side of the rubber crawler.
- This part is a relatively stable part that does not step on the wheel, and is located in the center of the rubber crawler. Therefore, it is a position where problems such as twisting are relatively difficult to occur.
- the effective overlap width depends on the size of the rubber crawler and the size of the rubber protrusion, but 10 mm is sufficient, and the end of the overlap is on the outer side in the width direction of the rubber protrusion. Although it may protrude to a certain extent, it is preferable to limit the width to the contact portion of the wheel that rolls on the left and right outer sides of the rubber protrusion.
- the bias angle of the bias cord can be arbitrarily selected with respect to the size of the rubber crawler, the size of the sprocket (curvature), the external force to be applied from the lateral direction, etc. About 10 to 45 degrees with respect to the width direction, preferably about 30 to 40 degrees is preferred.
- various synthetic fibers such as steel cord, nylon and polyester are used.
- the noisy cord may be embedded at the inner or outer peripheral side of the steel cord, but is generally embedded at the outer peripheral side.
- the bias cord has a diameter smaller (thin) than the diameter of the steel cord (main cord) embedded in the longitudinal direction of the rubber elastic body.
- the bias cord diameter was 0.9 mm
- the steel cord (main cord) diameter was 3.2 mm.
- the steel cord (main cord) requires a certain cord diameter to ensure the breaking strength. If the bias cord is as thick as the steel cord, depending on the size, the bending rigidity will be too strong and followability will be increased. This is because it causes a drop and causes a phenomenon such as wheel removal and tooth skipping.
- FIG. 1 is a sectional view in the width direction of the rubber crawler A of the present invention
- FIG. 2 is a partially cut plan view.
- Reference numeral 1 denotes a rubber elastic body that forms the base of the rubber crawler A, and is continuous up and down in FIG.
- Reference numeral 2 denotes rubber protrusions formed at a constant pitch at the central portion of the inner peripheral surface of the rubber elastic body 1, and a driving force is transmitted by engaging with a sprocket, not shown.
- 3 is a steel cord as a tensile reinforcement member, embedded in the longitudinal direction of the rubber elastic body 1.
- 4 is a rubber lug formed on the outer peripheral surface of the rubber elastic body 1.
- Reference numerals 5 and 6 are bias cords made of steel cord fibers embedded on the outer peripheral side of the steel cord 3, which are embedded at 38 degrees with respect to the width direction. 7 is a portion where the central side edges of the bias cords 5 and 6 are overlapped, and this overlapped portion is directly below the rubber protrusion 2, and usually the rolling of the roller 10 that rolls on the left and right surfaces of the rubber protrusion 2. Configure the overlapping parts so that they do not reach the moving part! /.
- each of the bias cords (angle 38 degrees) 5 and 6 is 250 mm, and the overlapping part 7 Rubber crawler A was constructed with a stacking width of 50 mm.
- the left and right widths of the rubber protrusions formed on the inner peripheral side were 60 mm.
- Fig. 3 is a side view when the rubber crawler A is wound around the sprocket 20.
- the sprocket 20 having a small bending rigidity has a shape as designed.
- the rubber crawler B described in Patent Document 1 shown by the dotted line
- the rubber crawler A of the present invention is sufficiently wound as designed compared to the conventional one, and the tooth skipping phenomenon with the sprocket 20 is extremely reduced, and the rubber crawler A, particularly the rubber protrusion 2 There was almost no rubber chipping.
- Table 1 shows the anti-de-rolling property (torsional rigidity), lateral stiffness (medium bending stiffness), bending stiffness (following property) in the examples of the present invention, comparative example 1, comparative example 2 and comparative example 2.
- the performance comparison about is shown.
- Comparative Example 1 the left and right bias cords in the width direction were overlapped over the entire width of the rubber crawler, and in Comparative Example 2, the left and right bias cords were abutted against each other.
- the bias cord was polymerized only on one side of the rubber protrusion.
- Comparative Example 3 has a polymerization portion, so that it is difficult to bend halfway, but it is easy to be removed due to an imbalance in rigidity.
- the present invention is also applied to a rubber crawler in which rubber protrusions are formed at a plurality of positions in the width direction of the inner peripheral surface of the rubber elastic body.
- Fig. 4 shows a rubber crawler in which rubber protrusions are formed at three locations in the width direction of the inner peripheral surface of the rubber elastic body. In this case, the overlapping portion is formed immediately below the central rubber crawler.
- the present invention is as described above, and a rubber crawler having improved torsional rigidity and lateral rigidity of a rubber crawler and having extremely little tooth skipping phenomenon as a traveling device is obtained. Widely available.
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008513325A JP5108755B2 (ja) | 2006-05-02 | 2007-05-02 | 芯金レスゴムクロ−ラ |
EP07742828.2A EP2014542B1 (en) | 2006-05-02 | 2007-05-02 | Coreless rubber crawler track |
US12/299,206 US8191976B2 (en) | 2006-05-02 | 2007-05-02 | Coreless rubber crawler track |
CN2007800155960A CN101432186B (zh) | 2006-05-02 | 2007-05-02 | 无芯骨橡胶履带 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006128422 | 2006-05-02 | ||
JP2006-128422 | 2006-05-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007126116A1 true WO2007126116A1 (ja) | 2007-11-08 |
Family
ID=38655634
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/059393 WO2007126116A1 (ja) | 2006-05-02 | 2007-05-02 | 芯金レスゴムクロ-ラ |
Country Status (5)
Country | Link |
---|---|
US (1) | US8191976B2 (ja) |
EP (1) | EP2014542B1 (ja) |
JP (1) | JP5108755B2 (ja) |
CN (1) | CN101432186B (ja) |
WO (1) | WO2007126116A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010047080A (ja) * | 2008-08-20 | 2010-03-04 | Bridgestone Corp | ゴムクローラ |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101146092B1 (ko) | 2009-12-11 | 2012-05-15 | 한국카모플라스트(주) | 충격흡수 홈을 구성한 고무 크로라 |
US8967737B2 (en) | 2010-06-30 | 2015-03-03 | Camoplast Solideal Inc. | Wheel of a track assembly of a tracked vehicle |
US9334001B2 (en) | 2010-12-14 | 2016-05-10 | Camso Inc. | Drive sprocket, drive lug configuration and track drive arrangement for an endless track vehicle |
US9067631B1 (en) | 2010-12-14 | 2015-06-30 | Camoplast Solideal Inc. | Endless track for traction of a vehicle |
US8985250B1 (en) | 2010-12-14 | 2015-03-24 | Camoplast Solideal Inc. | Track drive mode management system and methods |
EP2502807B1 (en) * | 2011-03-21 | 2018-07-11 | ContiTech USA, Inc. | Vehicle track |
JP2013244846A (ja) * | 2012-05-25 | 2013-12-09 | Bridgestone Corp | ゴムクローラ |
JP5851344B2 (ja) * | 2012-05-25 | 2016-02-03 | 株式会社ブリヂストン | ゴムクローラ |
US20160016621A1 (en) | 2013-03-15 | 2016-01-21 | Camoplast Solideal Inc. | Endless track for traction of a vehicle |
EP3747746B1 (en) | 2015-03-04 | 2023-05-31 | Camso Inc. | Track system for traction of a vehicle |
CN104709371B (zh) * | 2015-03-09 | 2016-04-13 | 湖南农业大学 | 一种金属与橡胶复合式耐磨履带 |
US10953937B2 (en) | 2015-05-06 | 2021-03-23 | Camso Inc. | Track for traction of a vehicle |
JP5855305B1 (ja) * | 2015-06-05 | 2016-02-09 | 株式会社ブリヂストン | 弾性クローラ |
WO2017000068A1 (en) | 2015-06-29 | 2017-01-05 | Camso Inc. | Systems and methods for monitoring a track system for traction of a vehicle |
DK3400163T3 (da) | 2016-01-04 | 2021-05-10 | Soucy Int Inc | Skinne til et køretøj |
US10392060B2 (en) * | 2016-01-07 | 2019-08-27 | Camso Inc. | Track system for traction of a vehicle |
USD870594S1 (en) | 2016-06-28 | 2019-12-24 | Camso Inc. | Track for traction of a vehicle |
US10046818B1 (en) * | 2017-11-28 | 2018-08-14 | Contitech Transportbandsysteme Gmbh | Rubber track wheel path reinforcement |
WO2019109191A1 (en) | 2017-12-08 | 2019-06-13 | Camso Inc. | Systems and methods for monitoring off-road vehicles |
US11066113B2 (en) * | 2018-05-10 | 2021-07-20 | Contitech Transportbandsysteme Gmbh | Galvanized wire ply for rubber track |
CN114604331A (zh) * | 2020-12-09 | 2022-06-10 | 北京橡胶工业研究设计院有限公司 | 履带车辆用高速重载橡胶履带 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001010556A (ja) | 1999-06-25 | 2001-01-16 | Bridgestone Corp | ゴムクローラ |
JP2002178965A (ja) | 2000-12-15 | 2002-06-26 | Bridgestone Corp | ゴムクローラー |
JP2002264854A (ja) * | 2001-03-09 | 2002-09-18 | Ohtsu Tire & Rubber Co Ltd :The | 弾性クローラ |
JP2003034276A (ja) * | 2001-07-24 | 2003-02-04 | Komatsu Ltd | 弾性履帯 |
WO2004106148A1 (ja) * | 2003-05-28 | 2004-12-09 | Bridgest0Ne Corporation | 直進性の良いゴムクローラ |
Family Cites Families (9)
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US2476828A (en) * | 1946-09-07 | 1949-07-19 | Firestone Tire & Rubber Co | Endless band track |
GB1058085A (en) * | 1962-10-31 | 1967-02-08 | Dunlop Rubber Co | Reinforced mechanical belting |
US3858948A (en) * | 1973-04-30 | 1975-01-07 | Goodyear Tire & Rubber | Belt track for vehicles |
US4229254A (en) * | 1979-04-26 | 1980-10-21 | Beloit Corporation | Extended nip press with bias ply reinforced belt |
US4721498A (en) * | 1986-04-14 | 1988-01-26 | Caterpillar Inc. | Endless elastomeric drive belt |
US5211609A (en) * | 1992-02-06 | 1993-05-18 | The Goodyear Tire & Rubber Company | Elastomeric drive belt |
JPH0632262A (ja) * | 1992-07-10 | 1994-02-08 | Bridgestone Corp | ゴムクロ−ラ |
FR2845344B1 (fr) * | 2002-10-07 | 2005-08-05 | Otico | Chenille a bande souple sans fin avec nappes de renforcement, en particulier pour vehicules tout terrain |
US7114788B2 (en) * | 2003-05-19 | 2006-10-03 | Soucy International Inc. | Angled traction lugs for endless band |
-
2007
- 2007-05-02 US US12/299,206 patent/US8191976B2/en not_active Expired - Fee Related
- 2007-05-02 EP EP07742828.2A patent/EP2014542B1/en not_active Expired - Fee Related
- 2007-05-02 CN CN2007800155960A patent/CN101432186B/zh not_active Expired - Fee Related
- 2007-05-02 JP JP2008513325A patent/JP5108755B2/ja not_active Expired - Fee Related
- 2007-05-02 WO PCT/JP2007/059393 patent/WO2007126116A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001010556A (ja) | 1999-06-25 | 2001-01-16 | Bridgestone Corp | ゴムクローラ |
JP2002178965A (ja) | 2000-12-15 | 2002-06-26 | Bridgestone Corp | ゴムクローラー |
JP2002264854A (ja) * | 2001-03-09 | 2002-09-18 | Ohtsu Tire & Rubber Co Ltd :The | 弾性クローラ |
JP2003034276A (ja) * | 2001-07-24 | 2003-02-04 | Komatsu Ltd | 弾性履帯 |
WO2004106148A1 (ja) * | 2003-05-28 | 2004-12-09 | Bridgest0Ne Corporation | 直進性の良いゴムクローラ |
Non-Patent Citations (1)
Title |
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See also references of EP2014542A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010047080A (ja) * | 2008-08-20 | 2010-03-04 | Bridgestone Corp | ゴムクローラ |
Also Published As
Publication number | Publication date |
---|---|
JPWO2007126116A1 (ja) | 2009-09-17 |
EP2014542B1 (en) | 2015-11-04 |
EP2014542A4 (en) | 2009-04-22 |
US20090200863A1 (en) | 2009-08-13 |
CN101432186A (zh) | 2009-05-13 |
EP2014542A1 (en) | 2009-01-14 |
CN101432186B (zh) | 2011-09-28 |
JP5108755B2 (ja) | 2012-12-26 |
US8191976B2 (en) | 2012-06-05 |
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