WO1997046441A1 - Barre de noyau pour chenilles en caoutchouc - Google Patents

Barre de noyau pour chenilles en caoutchouc Download PDF

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Publication number
WO1997046441A1
WO1997046441A1 PCT/JP1997/001882 JP9701882W WO9746441A1 WO 1997046441 A1 WO1997046441 A1 WO 1997046441A1 JP 9701882 W JP9701882 W JP 9701882W WO 9746441 A1 WO9746441 A1 WO 9746441A1
Authority
WO
WIPO (PCT)
Prior art keywords
core
rubber
height
protrusions
stoppers
Prior art date
Application number
PCT/JP1997/001882
Other languages
English (en)
Japanese (ja)
Inventor
Michio Suga
Masatake Tamaru
Hiroyuki Nakanishi
Original Assignee
Komatsu Ltd.
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 Komatsu Ltd. filed Critical Komatsu Ltd.
Publication of WO1997046441A1 publication Critical patent/WO1997046441A1/fr

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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 a core metal of a rubber crawler used for a tracked vehicle such as a construction machine such as a hydraulic shovel or a bulldozer.
  • Lower rolling wheels 26 (hereinafter referred to as rolling wheels 25 and 26) are provided.
  • a crawler belt 21 is wound around each of the rolling wheels 25, 26 so that the vehicle runs by the power transmitted to the driving wheels 22.
  • the crawler belt 21 is replaced with an iron crawler belt, and a rubber crawler 21 is frequently used to reduce vibration and noise.
  • Japanese Utility Model No. 2-1424291 is known. According to this, a plurality of cored bars are arranged, and a core for rubber crawler having a plurality of rolling rails on each cored bar is a front core of the cored bars disposed adjacent to each other in front and rear.
  • the protruding portion of the rolling rail on one end side of the gold is engaged with the concave portion of the rolling rail on one end side of the rear core bar, and the protruding portion of the rolling rail on the other end side of the front core bar is engaged. And the recessed portion of the rolling rail on the other end side of the rear mandrel is engaged.
  • Japanese Utility Model No. 6-370030 is known as a technique for preventing the crawler from coming off the rubber track. According to this, for example, as shown in FIG. At the center thereof, a pair of corners 3 la and 31 b on which the rolling wheel 40 (see FIG. 8) rolls are provided in a protruding state. Outside the corners 31a, 31b, a pair of shoulders 32a, 32b are formed so that the adjacent cores 30, 30 can be engaged. Has been described.
  • the rubber crawler cores described in the above two prior arts can prevent lateral displacement when the load is applied only in the horizontal direction on the same plane.
  • the core metal 30 shown in Fig. 8 has a large difference Ah between the height of the corners 31a and 31b and the height of the shoulders 32a and 32b.
  • a vertical load F is applied on the road surface, lateral slippage cannot be prevented.
  • crawler belt slippage occurs at shoulder steps 32a and 32 between adjacent cores 30 and 30.
  • the rubber crawler core bar described in Japanese Utility Model Publication No. 6-37030 will be described in detail with reference to FIG.
  • the shoulders 3 2a, 3 2b and the corners 3 1a. 3 1b the shoulders 3 2a, 3 2 when the rubber crawler is wound around the driving wheels or idler wheels.
  • a gap ⁇ t required to prevent lateral displacement is provided so that b and the corners 31a and 31b can be smoothly wound without contacting each other.
  • the upper surfaces of the shoulders 3 2a and 3 2b are substantially flush with the inner peripheral surface of the rubber crawler, while the corners 3 1a and 3 1b have a predetermined height on the inner peripheral surface. It is projected.
  • the shoulders 3 2 a and 3 2 b correspond to the stops 5 a and 5 b (see FIG. 1) of the present application, which will be described later, and the corners 31 a and 31 b correspond to the protrusions to be described later. Corresponds to parts 4 A and 4 B.
  • the shoulder portions 32a and 32b move from the point A to the point B (adjacent core metal). Displace upward to the point of 30 (the point in contact with the corners 31a and 31b). In the figure, is the angle difference (two twist angles) between the adjacent core metal 30. Further, when the core metal 30 is displaced upward, the point C of the corners 3-la and 31b moves to the point C1.
  • the present invention has been made in order to solve the problems of the related art, and is intended to be used in a work site of a construction vehicle such as a bulldozer or the like, when working on a sloped road or an uneven road surface, in the vertical direction, the It is another object of the present invention to provide a rubber crawler core bar that does not cause crawler belt slippage due to a load applied from a torsional direction.
  • the core metal for a rubber crawler according to the present invention includes:
  • a rubber core that embeds a plurality of metal cores having a pair of left and right protrusions arranged in the belt-shaped longitudinal direction for rolling the rolling wheels and a stud provided near the outside of the pair of left and right protrusions.
  • Adjacent metal cores are arranged so that the protrusions of the protrusions of one metal core and the ribs of the other metal core protrude so as to engage with each other,
  • the stopper is provided up to a height above the inner peripheral surface of the rubber opening.
  • the relationship between the height h of the protruding portion and the height h i of the stove is characterized by h h i.
  • the height h of the protruding portion and the stopper can be obtained even when the construction vehicle is riding on a boulder or the like and is subjected to a load in a vertical or horizontal direction or a torsion direction while working on a sloped or uneven road surface. Since the relationship between the height and the height h1 is defined as h ⁇ h1, the stopper comes into contact with and engages with the protrusion of the adjacent metal core. By this engagement, vertical and lateral displacements are suppressed. Therefore, the lateral displacement between the core metals adjacent in the front-rear direction is suppressed, and the running of the rolling wheel is prevented. As a result, the rubber is not peeled off or damaged due to the crawler belt coming off, and the durability of the rubber crawler is improved.
  • the relationship between the amount of movement ⁇ of the protrusion and the clearance ⁇ t between the protrusion and the stud may be ⁇ ⁇ ⁇ t.
  • FIG. 1 is an explanatory diagram of a core metal for a rubber track according to an embodiment of the present invention.
  • FIG. 2 is an explanatory view of an engaged state of an adjacent core metal with the rubber track of FIG.
  • FIG. 3 is a view of FIG.
  • FIG. 4 is a perspective view of the core metal of FIG.
  • FIG. 5 is an explanatory view of the relationship between the protruding portion of the core metal of FIG. 1 and the stopper.
  • FIG. 6 is a side view of a conventional rubber track.
  • FIG. 7 is a perspective view of a conventional rubber clad core.
  • FIG. 8 is an explanatory diagram of the cored bar of FIG.
  • FIG. 9 is an explanatory view of the relationship between the shoulder step and the corner of the cored bar of FIG. BEST MODE FOR CARRYING OUT THE INVENTION
  • the rubber crawler 1 includes a plurality of metal cores 2 having a pair of left and right protrusions 4A, 4B.
  • the protruding portions 4A, 4B are provided with strong rolling surfaces 4a, 4b (see FIG. 4) to enable the rolling wheel 10 to roll.
  • Wings 3 are provided on the left and right portions of the cored bar 2.
  • metal core wires 6 and 7 are buried in the belt-like direction of the rubber roller 1. The rolling wheel 10 is engaged between the protrusion 4A and the protrusion 4B.
  • the core metal 2 embedded in the rubber crawler 1 will be described with reference to FIG. Core bars 2, 2 are arranged adjacent to the rubber crawler 1 in the front-rear direction. If the traveling direction of the metal core 2 by the rotation of the rubber crawler 1 is set to the front side, the pair of protrusions 4 A and 4 B It has a pair of engagement projections (projections) 4C and 4D. A pair of stoppers 5a and 5b, which protrude in the traveling direction, are provided near the outside of the protrusions 4A and 4B.
  • the front metal core 2 in FIG. 2 ie, the traveling direction side
  • the rear metal core 2 is referred to as a rear metal core 2.
  • the engagement protrusions 4C and 4D of the front core 2 and the flanges 5a and 5b of the rear core 2 are viewed from the side as shown in FIG. They are overlapped, and the cores 2 and 2 are engaged.
  • the relationship between the protrusions 4A, 4B and the stoppers 5a, 5b in the rubber crawler core 2 of the present invention will be described with reference to FIG.
  • the protrusions 4A, 4B and the stopper are provided between the protrusions 4A, 4B and the stoppers 5a, 5b.
  • a gap ⁇ t necessary to prevent lateral displacement is provided so that 5a and 5b can be wound smoothly without contacting each other.
  • the points A and B shown in FIG. 5 are located on the same circular arc having the line segment OA as a radius, with the rubber crawler shaft end 0 as the center. Therefore, since the angle 02 (the angle A 0 B) becomes smaller as the angle 5 becomes larger, when the core bar 1 is displaced upward from the rubber crawler end 0, the ends 5a and 5b Point A of the part is displaced upward to point B (the point that touches the protrusion 4A. 4B). At the time of this upward displacement, in the metal core 2 of the present invention, the amount of movement ⁇ from the point C of the protrusions 4A, 4B from the point C to the point C1 is smaller than that of the prior art in FIG. Crawler tracks do not come off even when vertical, lateral, and torsional loads are applied.
  • the height hi at which the stoppers 5a and 5b protrude above the inner peripheral surface of the rubber crawler 1 is determined from the above formulas (1), (2) and (3) from the rubber crawler end 0.
  • the distance to the stopper 5a.5b is £ 1
  • the gap between the protrusion 4A.4B and the stopper 5a, 5b is ⁇ t
  • the horizontal and vertical positions of the protruding parts 4 A and 4 B are used as the rolling parts of the rolling wheel 10 (see Fig. 1), from the rubber clock end 0 to the protruding parts 4 A and 4 B 0R1. Set the distance £ 0, and the height h of the protrusions 4 A, 4 B.
  • the clearance ⁇ t between the protrusions 4 A and 4 B and the flanges 5 a and 5 b is a predetermined reference value for manufacturing and for winding the rubber crawler 1 from small to large. Set by.
  • the moving amount ⁇ T is set as a predetermined value.
  • the movement amount ⁇ T and the gap ⁇ t are set as described above. 1
  • the present invention can prevent the crawler track from coming off in the vertical, horizontal, and torsional directions, and is useful as a rubber clad core metal that can be applied to small to large construction machines, industrial machines, and agricultural machines. is there.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Harvester Elements (AREA)

Abstract

L'invention concerne une barre de noyau conçue pour des chenilles en caoutchouc et pouvant empêcher le désaccouplement d'une bande de chenille même quand la charge s'exerce latéralement pendant une opération sur un terrain en pente, par exemple. De ce fait, une pluralité de barres de noyau est encastrée dans une chenille en caoutchouc, ces barres de noyau possédant chacune une paire de projections droite et gauche, afin de rouler avec les roues en mouvement, ainsi que des butées situées à proximité des projections droite et gauche. Des barres de noyau contiguës (2, 2) sont conçues pour former une saillie, de sorte que les parties saillantes (4C, 4D) des projections (4A, 4B) de l'une (2) des barres de noyau, viennent en contact avec les butées (5a, 5b) de l'autre (2) des barres de noyau, les butées (5a, 5b) possédant une hauteur supérieure à une surface périphérique intérieure de la chenille en caoutchouc et un rapport entre une hauteur h des projections (4A, 4B) et une hauteur h1 des butées (5a, 5b) étant h ≥ hl.
PCT/JP1997/001882 1996-06-04 1997-06-03 Barre de noyau pour chenilles en caoutchouc WO1997046441A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8/162462 1996-06-04
JP16246296A JPH09323673A (ja) 1996-06-04 1996-06-04 ゴムクローラ用の芯金

Publications (1)

Publication Number Publication Date
WO1997046441A1 true WO1997046441A1 (fr) 1997-12-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1997/001882 WO1997046441A1 (fr) 1996-06-04 1997-06-03 Barre de noyau pour chenilles en caoutchouc

Country Status (2)

Country Link
JP (1) JPH09323673A (fr)
WO (1) WO1997046441A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2489579A1 (fr) * 2009-10-13 2012-08-22 Kubota Corporation Dispositif de déplacement de chenille

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007056584A (ja) * 2005-08-25 2007-03-08 Tonneru No Rental:Kk ゴムクローラ式エレクター

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63251385A (ja) * 1987-04-07 1988-10-18 Bridgestone Corp ゴムクロ−ラ
JPH061154U (ja) * 1992-06-22 1994-01-11 株式会社小松製作所 ゴム履帯
JPH061155U (ja) * 1992-06-22 1994-01-11 株式会社小松製作所 ゴム履帯
JPH0637030Y2 (ja) * 1988-09-12 1994-09-28 福山ゴム工業株式会社 ゴムクローラ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63251385A (ja) * 1987-04-07 1988-10-18 Bridgestone Corp ゴムクロ−ラ
JPH0637030Y2 (ja) * 1988-09-12 1994-09-28 福山ゴム工業株式会社 ゴムクローラ
JPH061154U (ja) * 1992-06-22 1994-01-11 株式会社小松製作所 ゴム履帯
JPH061155U (ja) * 1992-06-22 1994-01-11 株式会社小松製作所 ゴム履帯

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2489579A1 (fr) * 2009-10-13 2012-08-22 Kubota Corporation Dispositif de déplacement de chenille
EP2489579A4 (fr) * 2009-10-13 2014-08-13 Kubota Kk Dispositif de déplacement de chenille

Also Published As

Publication number Publication date
JPH09323673A (ja) 1997-12-16

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