WO2006043616A1 - 芯金レスクロ-ラの構造 - Google Patents
芯金レスクロ-ラの構造 Download PDFInfo
- Publication number
- WO2006043616A1 WO2006043616A1 PCT/JP2005/019274 JP2005019274W WO2006043616A1 WO 2006043616 A1 WO2006043616 A1 WO 2006043616A1 JP 2005019274 W JP2005019274 W JP 2005019274W WO 2006043616 A1 WO2006043616 A1 WO 2006043616A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rubber
- cord
- bias
- crawler
- main
- 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
- B62D55/244—Moulded in one piece, with either smooth surfaces or surfaces having projections, e.g. incorporating reinforcing elements
Definitions
- the present invention relates to the structure of a coreless crawler and aims to improve the life of the crawler.
- FIG. 1 is a cross-sectional view showing the structure of a cored barless crawler.
- Main cord 2 is embedded in a row in the longitudinal direction of crawler 1
- two layers of bias cords a and b are embedded on the outer peripheral side
- bias code c is embedded on the inner peripheral side. It has a structure.
- a rubber protrusion 6 is formed at a constant pitch in the center of the inner peripheral surface to receive a driving force from the sprocket, and a rubber lug 7 is formed on the outer peripheral surface.
- Noise cords a, b, c, and main cord 2 are not vulcanized, so-called trit rubber, from the top and bottom of the cord, instead of placing each cord in the mold as it is when forming the crawler. It is formed by sandwiching between rubber sheets to form a belt and superimposing them in a mold.
- the noise codes a and b are codes that are reversed by about 35 degrees with respect to the main code 2, and the bias code c has a direction almost perpendicular to the main code 2! /.
- Each of these codes not only increases the lateral rigidity of the crawler, but also prevents the rubber from cracking against external forces, and even if cracks occur, the cracks stop at the location of this bias code, and the main code It is intended to prevent the effect from being affected.
- the inner peripheral surfaces 1A and IB of the rubber protrusion 6 in the left-right width direction are the rolling surfaces of the rolling wheels, and these portions are repeatedly subjected to compression and twisting by the rolling wheels, and the bias on the inner circumferential side This can cause code c to break.
- the rupture force S of the strong bias code c is provided, the rubber peels off from this point, and the rubber is chipped and the main cord is wrinkled. This can significantly reduce the life of the crawler. is there.
- the present invention provides a cored bar-less crawler that eliminates fracture of the bias code on the inner peripheral side caused by rolling of a wheel.
- the gist of the present invention is that the main cords are embedded in rows in the longitudinal direction of the crawler, and two layers are formed on the outer peripheral side of the main cord at opposite angles to the left and right with respect to the main cord. Nias cords a and b are embedded, and a bias cord c arranged in a direction perpendicular to the main cord is embedded on the inner peripheral side of the main cord, and a rubber protrusion at a constant pitch in the center of the inner peripheral surface
- the bias cords &, b, c and the main cord are sandwiched between the trit rubbers, and at least the plan view of the crawler
- the present invention is configured as described above, so that the noise code c does not break even when the rolling wheel rolls across the left and right widths of the rubber protrusion 6 during use of the powerful crawler. Rubber cracks and rubber chips due to this fracture, as well as wrinkling and cutting of the main cord, have been eliminated.
- FIG. 1 is a cross-sectional view of a conventional crawler.
- FIG. 2 is a detailed view of a conventional crawler before the vulcanization between the main cord and the bias cord c.
- FIG. 3 is a plan view of the outer periphery of the crawler according to the present invention.
- FIG. 4 is a plan view of the inner peripheral side of the crawler according to the present invention.
- FIG. 5 is a side view of the crawler of the first example of the present invention.
- FIG. 6 is a cross-sectional view of the crawler in FIG. 5 taken along the line AA.
- FIG. 7 is a cross-sectional view taken along line BB of the crawler in FIG.
- FIG. 8 is a detailed view of the crawler main cord and bias cord c in FIG. 5 before vulcanization.
- FIG. 9 is a detailed view after vulcanization between the crawler main cord and the bias cord c in FIG. 5.
- FIG. 10 is a cross-sectional view similar to FIG. 6 of the crawler of the second example of the present invention.
- Fig. 2 is a detailed view between the main cord 2 and the bias cord c of a conventional crawler.
- the main cord 2 is sandwiched from above and below by unvulcanized rubber gl and g2 to form a belt shape.
- the bias cord c is also formed into a belt shape with unvulcanized rubber g 3 and g 4 and is laminated and calcined so that the periphery of the main cord 2 and the bias code c is a high hardness rubber. It will be surrounded by.
- the present invention is lower than trit rubber so as to cover at least the rolling surface of the rolling wheel in the lateral width direction of the rubber projection in a plan view of the crawler in the hard rubber between the bias cord c and the main cord.
- the bias cord c and the hard rubber layer covering the bias cord c absorb mainly the strain caused by the rolling of the wheels by the low hardness rubber layer, and the bias code c breaks. Is reduced.
- the hardness is usually 70 to 85 degrees (JIS 'A) .
- JIS 'A a structure in which a low-hardness rubber layer is sandwiched between the rubber that can be used by the neutral cord c and the main cord.
- the hardness of this low-hardness rubber layer is 50 to 70 degrees, preferably 55 to 65 degrees (JIS 'A), and a thickness of 2 to 4 mm. It is sufficient to embed a rubber layer of a degree.
- FIG. 3 is a plan view of the outer circumference of the crawler of the present invention
- FIG. 4 is a plan view of the inner circumference
- FIG. 5 is a side view
- FIG. 6 is a cross-sectional view taken along line AA
- FIG. A main cord 2 is embedded in a row in the longitudinal direction of the crawler 1
- two layers of noise cords a and b are embedded on the outer peripheral side
- a bias core is embedded on the inner peripheral side.
- C is buried.
- rubber protrusions 6 are formed at a constant pitch at the central portion of the inner peripheral surface to receive driving force from the sprocket
- rubber lugs 7 are formed on the outer peripheral surface.
- Bias code &, b is a stack of codes that are approximately 35 degrees opposite to the main code 2.
- the bias code c extends in a direction perpendicular to the main code 2 and is generally called a code angle of 0 degrees.
- Each bias code is a series of steel codes arranged in a comb shape.
- a rubber layer G having a rubber hardness of 60 degrees, which will be described later, is buried between the nose cord c and the main cord 2.
- FIG. 8 is a detailed view between the main cord 2 and the bias cord c of the crawler of the present invention.
- the main cord 2 is sandwiched from above and below by unvulcanized rubber gl and g2 to form a belt shape.
- the bias code c is also in the form of a belt with unvulcanized rubber g 3 and g 4. Then, unvulcanized rubber GO constituting low hardness is sandwiched in the entire width direction between the belts, and the rubber is calculated in this state.
- FIG. 9 shows the state after vulcanization, and the rubber hardness of the rubber layer G was 60 degrees.
- the rubber layer G is interposed between the main cord 2 and the bias cord c, and the width of the rubber layer G is almost the same as the width of the bias cord c.
- the unvulcanized rubbers gl, g2, g3, and g4 surrounding the main cord 2 and the bias cord c were vulcanized together, and the rubber hardness was 80 degrees.
- FIG. 10 is a cross-sectional view similar to FIG. 6, showing a second example of the present invention.
- the rolling wheel 10 rolls on the left and right width direction surfaces of the rubber protrusion 6, but in a plan view, a portion with which the rolling wheel 10 rolls is covered and a low hardness rubber is interposed. It is. Therefore, the low-hardness rubber layer is divided into left and right sides and interposed.
- the left and right ends of each layer are gradually shortened toward the outer periphery. This is to prevent the ear heel by gradually softening the left and right ends of the crawler. In this respect, although not shown in the figure, it can be dealt with by making it stepwise as it goes to the inner circumference side.
- the present invention eliminates the drawbacks of breaking the bias code during the use of a powerful crawler, and can be widely applied to a cored bar-less crawler.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006543051A JP4838142B2 (ja) | 2004-10-20 | 2005-10-20 | 芯金レスクロ−ラの構造 |
US11/665,771 US7641292B2 (en) | 2004-10-20 | 2005-10-20 | Structure of coreless crawler |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-305995 | 2004-10-20 | ||
JP2004305995 | 2004-10-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006043616A1 true WO2006043616A1 (ja) | 2006-04-27 |
Family
ID=36203031
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/019274 WO2006043616A1 (ja) | 2004-10-20 | 2005-10-20 | 芯金レスクロ-ラの構造 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7641292B2 (ja) |
JP (1) | JP4838142B2 (ja) |
WO (1) | WO2006043616A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010021384A1 (ja) * | 2008-08-22 | 2010-02-25 | 株式会社ブリヂストン | ゴムクローラおよびクローラ式走行体 |
JP2015151037A (ja) * | 2014-02-17 | 2015-08-24 | 三菱重工業株式会社 | ゴムクローラ |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5855305B1 (ja) * | 2015-06-05 | 2016-02-09 | 株式会社ブリヂストン | 弾性クローラ |
US11066113B2 (en) * | 2018-05-10 | 2021-07-20 | Contitech Transportbandsysteme Gmbh | Galvanized wire ply for rubber track |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62265080A (ja) * | 1986-05-14 | 1987-11-17 | Yokohama Rubber Co Ltd:The | 無限軌道帯 |
JP2001278137A (ja) * | 2000-03-29 | 2001-10-10 | Ohtsu Tire & Rubber Co Ltd :The | 弾性クローラ及びその製造方法 |
JP2002019654A (ja) * | 2000-07-10 | 2002-01-23 | Bridgestone Corp | ゴムクローラ |
JP2002166862A (ja) * | 2000-12-01 | 2002-06-11 | Ohtsu Tire & Rubber Co Ltd :The | 弾性クローラ |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
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US2476828A (en) * | 1946-09-07 | 1949-07-19 | Firestone Tire & Rubber Co | Endless band track |
US3480339A (en) * | 1968-02-01 | 1969-11-25 | Goodyear Tire & Rubber | Belt track for vehicles |
US3754798A (en) * | 1971-03-02 | 1973-08-28 | Dayco Corp | Track for snowmobile or the like |
US3712689A (en) * | 1971-03-02 | 1973-01-23 | Poly Traction Inc | Track for snowmobile or the like |
US3858948A (en) * | 1973-04-30 | 1975-01-07 | Goodyear Tire & Rubber | Belt track for vehicles |
CA975034A (en) * | 1973-06-19 | 1975-09-23 | Elast-O-Flex Inc. | Snowmobile track |
US4269459A (en) * | 1978-12-26 | 1981-05-26 | Chrysler Corporation | Wheel bearing slinger ring |
JPH0648333A (ja) * | 1991-05-31 | 1994-02-22 | Fukuyama Rubber Kogyo Kk | 高弾性ゴムクローラ |
JPH05170148A (ja) * | 1991-12-18 | 1993-07-09 | Ohtsu Tire & Rubber Co Ltd :The | ウレタンゴムクローラ及びその製造方法 |
JPH06144310A (ja) * | 1992-11-04 | 1994-05-24 | Bridgestone Corp | ゴムクローラ |
US5533796A (en) * | 1994-08-15 | 1996-07-09 | Lmc Operating Corp. | Belt construction for vehicle endless track |
JP2001191966A (ja) * | 1999-12-31 | 2001-07-17 | Bridgestone Corp | ゴムクローラ |
JP2002321667A (ja) * | 2001-04-26 | 2002-11-05 | Ohtsu Tire & Rubber Co Ltd :The | 弾性クローラ |
JP4279535B2 (ja) | 2001-10-12 | 2009-06-17 | 株式会社ブリヂストン | ゴムクローラの構造 |
JP4087619B2 (ja) * | 2002-02-27 | 2008-05-21 | 住友ゴム工業株式会社 | 弾性クローラ |
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 |
CA2412182A1 (en) * | 2002-11-20 | 2004-05-20 | Camoplast Inc. | Endless track for industrial or agricultural vehicles |
EP1627804B1 (en) * | 2003-05-28 | 2010-03-31 | Bridgestone Corporation | Rubber track with excellent straight-line stability |
JP2006103531A (ja) * | 2004-10-06 | 2006-04-20 | Bridgestone Corp | ゴムクロ−ラ |
-
2005
- 2005-10-20 US US11/665,771 patent/US7641292B2/en not_active Expired - Fee Related
- 2005-10-20 JP JP2006543051A patent/JP4838142B2/ja not_active Expired - Fee Related
- 2005-10-20 WO PCT/JP2005/019274 patent/WO2006043616A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62265080A (ja) * | 1986-05-14 | 1987-11-17 | Yokohama Rubber Co Ltd:The | 無限軌道帯 |
JP2001278137A (ja) * | 2000-03-29 | 2001-10-10 | Ohtsu Tire & Rubber Co Ltd :The | 弾性クローラ及びその製造方法 |
JP2002019654A (ja) * | 2000-07-10 | 2002-01-23 | Bridgestone Corp | ゴムクローラ |
JP2002166862A (ja) * | 2000-12-01 | 2002-06-11 | Ohtsu Tire & Rubber Co Ltd :The | 弾性クローラ |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010021384A1 (ja) * | 2008-08-22 | 2010-02-25 | 株式会社ブリヂストン | ゴムクローラおよびクローラ式走行体 |
JP2010047173A (ja) * | 2008-08-22 | 2010-03-04 | Bridgestone Corp | ゴムクローラおよびクローラ式走行体 |
US8567877B2 (en) | 2008-08-22 | 2013-10-29 | Bridgestone Corporation | Rubber crawler and crawler-type traveling body |
JP2015151037A (ja) * | 2014-02-17 | 2015-08-24 | 三菱重工業株式会社 | ゴムクローラ |
Also Published As
Publication number | Publication date |
---|---|
JP4838142B2 (ja) | 2011-12-14 |
JPWO2006043616A1 (ja) | 2008-05-22 |
US20080164755A1 (en) | 2008-07-10 |
US7641292B2 (en) | 2010-01-05 |
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