KR101878583B1 - Elastic crawler and crawler travelling device equipped with same - Google Patents

Elastic crawler and crawler travelling device equipped with same Download PDF

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Publication number
KR101878583B1
KR101878583B1 KR1020167032996A KR20167032996A KR101878583B1 KR 101878583 B1 KR101878583 B1 KR 101878583B1 KR 1020167032996 A KR1020167032996 A KR 1020167032996A KR 20167032996 A KR20167032996 A KR 20167032996A KR 101878583 B1 KR101878583 B1 KR 101878583B1
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KR
South Korea
Prior art keywords
crawler
elastic
wheel
elastic body
dividing groove
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KR1020167032996A
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Korean (ko)
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KR20160147931A (en
Inventor
카쯔미 후지키
노부오 시모조노
카오루 오카다
유타카 아비코
Original Assignee
얀마 가부시키가이샤
가부시키가이샤 브리지스톤
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Priority claimed from JP2014099571A external-priority patent/JP2015214305A/en
Priority claimed from JP2014113556A external-priority patent/JP6300408B2/en
Application filed by 얀마 가부시키가이샤, 가부시키가이샤 브리지스톤 filed Critical 얀마 가부시키가이샤
Publication of KR20160147931A publication Critical patent/KR20160147931A/en
Application granted granted Critical
Publication of KR101878583B1 publication Critical patent/KR101878583B1/en

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    • 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
    • B62D55/088—Endless track units; Parts thereof with means to exclude or remove foreign matter, e.g. sealing means, self-cleaning track links or sprockets, deflector plates or scrapers
    • 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

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

Abstract

Provided is an elastic crawler capable of reducing running resistance caused by flexural resistance of an elastic crawler and a crawler traveling device having the elastic crawler. An elastic member of an endless belt type wound around a drive wheel and an idler wheel and supported by the outer peripheral surface of the drive wheel and the fluid wheel so as to protrude from the inner peripheral surface of the elastic member; And a sectional area of the dividing groove in a circumferential cross section of the elastic body is larger than a width direction of the elastic body.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an elastic crawler and a crawler traveling device having the elastic crawler,

The present invention relates to an elastic crawler and a crawler traveling apparatus having the same.

BACKGROUND ART Conventionally, a crawler traveling apparatus includes a driving wheel connected to a driving shaft of a crawler vehicle (for example, a combine or a tractor) as a base, an idler wheel rotatably mounted on the crawler vehicle, Which is an endless type of elastic crawler.

Patent Document 1 discloses an elastic crawler having a plurality of core metal buried along the circumferential direction of the elastic body and a support portion formed on the inner circumferential surface of the elastic body by being raised. The support portion is disposed between the neighboring cores in the circumferential direction of the elastic body.

Patent Document 2 discloses an elastic crawler in which a supporting portion for supporting the outer circumferential surface of a driving wheel and a swirl wheel is disposed at a distance in the circumferential direction of the crawler and a dividing groove for dividing the supporting portion in the crawler circumferential direction.

Patent Document 1: JP-A-11-222170 Patent Document 2: JP-A-2013-107472

The resilient crawler is provided with the dividing groove, so that the supporting portion is easily deformed from the dividing groove portion to the crawler circumferential direction. Therefore, the elastic crawler can reduce the resistance (flexural resistance) against flexural deformation when the support crawler is bent along the outer peripheral surface of the drive wheel or the swirling wheel at the support portion. That is, the running resistance of the crawler traveling device can be reduced.

However, in the elastic crawler, mud or the like is caught in the dividing groove, so that the supporting portion is hardly deformed in the circumferential direction of the crawler, and the running resistance of the crawler traveling device is sometimes increased.

The elastic crawler is wound around the drive wheel and the bouncing wheel while abutting the support on the outer circumferential surface of the drive wheel or on the outer circumferential surface of the swirling wheel. Since the supporting portion and the core are provided adjacent to each other in the circumferential direction of the elastic body, when the crawler traveling device travels, resistance to bending deformation (bending resistance) tends to easily occur in the supporting portion, thereby increasing the running resistance of the crawler traveling device.

Therefore, the present invention provides an elastic crawler capable of reducing the running resistance due to bending resistance and a crawler traveling device having the elastic crawler.

An elastic crawler according to a first aspect of the present invention comprises an elastic body of an endless belt type rolled around a drive wheel and a fluid wheel and is supported by a support portion And a dividing groove for dividing the supporting portion in the circumferential direction of the elastic body, and the cross-sectional area of the dividing groove in the circumferential cross section of the elastic body is enlarged to the outside in the width direction of the elastic body.

And the width of the dividing groove is widened outward in the width direction of the elastic body.

And the depth of the dividing groove is deeper toward the outside in the width direction of the elastic body.

The width of the dividing groove is widened outward in the width direction of the elastic body and the depth of the dividing groove is deeper toward the outside in the width direction of the elastic body.

A crawler traveling device according to a first aspect of the present invention includes the drive wheel that transmits a driving force, the swinging wheel that is rotatably disposed, and the elastic crawler that is wound on the driving wheel and the swinging wheel.

The elastic crawler according to the second aspect of the present invention is characterized in that the elastic crawler comprises a plurality of cores which are embedded in an endless belt-shaped elastic body wound around a drive wheel and a fluid wheel with an interval in the circumferential direction of the elastic body, And a support portion which abuts against the outer circumferential surface of the drive wheel and the swirling wheel, wherein the support portion is formed by being protruded between the neighboring cores and is spaced apart from the neighboring cores in a circumferential direction of the elastic body do.

Wherein the support portion is formed by being raised on the core between the neighboring cores and on the core, and a support portion formed on the core, the support portion being formed in a circumferential direction of the elastic body from a support portion formed between the neighboring cores Respectively.

A crawler traveling device according to a second aspect of the present invention includes the drive wheel that transmits a driving force, the swinging wheel that is rotatably disposed, and the elastic crawler that is wound on the driving wheel and the swinging wheel.

The elastic crawler according to the first aspect of the present invention and the crawler traveling apparatus having the same can reduce the traveling resistance of the crawler traveling apparatus by suppressing an increase in the bending resistance in the supporting portion by improving the muddy- .

The elastic crawler according to the second aspect of the present invention and the crawler traveling apparatus having the elastic crawler according to the second aspect of the present invention can reduce the bending resistance of the elastic crawler, thereby reducing the running resistance of the crawler traveling apparatus.

1 is a side view of a tractor equipped with a crawler traveling device.
Fig. 2 (a) is a perspective view showing a crawler traveling device, and Fig. 2 (b) is a perspective view showing a driving wheel of the crawler traveling device.
3 is a view showing the inner circumferential surface of the elastic crawler.
4 is a sectional view taken along the line AA of FIG.
5 is a cross-sectional view taken along arrow BB in Fig.
6 is a view showing the outer circumferential surface of the elastic crawler.
7 is a cross-sectional view of the center portion in the crawler width direction showing a state in which the elastic crawler is wound around the outer peripheral surface of the drive wheel.
8 is a view showing a force acting on a retentive such as mud in the dividing groove at the time of bending of the supporting portion.
FIG. 9A is a cross-sectional view of a center portion in the crawler width direction in another embodiment of the dividing groove, and FIG. 9B is a cross-sectional view of the peripheral portion in the crawler width direction in another embodiment of the dividing groove.
10 (a) is a cross-sectional view of the center portion in the crawler width direction in another embodiment of the dividing groove, and FIG. 10 (b) is a cross-sectional view of the peripheral portion in the crawler width direction in another embodiment of the dividing groove.
Fig. 11A is a cross-sectional view of a center portion in the crawler width direction in another embodiment of the dividing groove, and Fig. 11B is a sectional view of the peripheral portion in the crawler width direction in another embodiment of the dividing groove.
12 is a view showing an inner circumferential surface of an elastic crawler according to another embodiment.
13 is a sectional view taken along the line AA in Fig.
Fig. 14 is a sectional view taken along arrow BB in Fig. 12. Fig.
15 is a view showing an outer circumferential surface of an elastic crawler according to another embodiment;
16 is a cross-sectional view of the center portion in the crawler width direction showing the state in which the elastic crawler of another embodiment is wound around the outer peripheral surface of the drive wheel.

The crawler traveling apparatus according to this embodiment includes a drive wheel connected to a drive shaft of a crawler vehicle (for example, a combine or a tractor) as a base, a fluid wheel mounted rotatably to the crawler vehicle, a drive wheel, And an elastic crawler wound around a rotating wheel rotatably mounted on the crawler vehicle so as to be disposed between the fluid wheels.

Hereinafter, a crawler traveling apparatus will be described using a tractor as an example of a crawler vehicle.

As shown in Fig. 1, a tractor 3 is provided with a crawler traveling device 2 having an elastic crawler 1. As shown in Fig.

The tractor 3 includes a body frame 4, an engine (not shown) covered by the bonnet 5, a cabin 6, and a pair of right and left A front wheel 7 and a pair of left and right crawler traveling devices 2 provided at the rear of the base frame 4 and the like.

The tractor 3 is capable of tilling work by opening a lifting link mechanism 8 at the rear of the base frame 4 and mounting a tiller such as a rotary.

2, the crawler traveling device 2 is configured such that the elastic crawler 1 formed of an endless elastic body is disposed between the upper drive wheel 11, front and rear swinging wheels 12, And a plurality of rotating wheels 13 arranged side by side in the front-rear direction.

In the present embodiment, the elastic crawler 1 is formed of a rubber body in which a rubber material is formed in the form of an endless belt as an example of an elastic body.

The crawler traveling device (2) is detachably mounted by opening the rear axle case (21). A drive wheel 11 is mounted on a rear axle (not shown) extending from the rear axle case 21.

The drive wheel 11 includes a disk-shaped wheel portion 11a connected to the drive shaft of the tractor 3 and a pair of right and left wheel portions 11a which are provided at regular intervals in the circumferential direction on both edges of the outer circumferential side of the wheel portion 11a, And a pair of teeth 11b.

A track frame 31 extending in the front-rear direction is provided below the rear axle case 21. And the flange member 32 is detachably fixed to the rear axle case 21. A front link rod 33 is provided in front of a rear axle (not shown), and a rear link rod 34 is provided behind a rear axle (not shown). The front link rod 33 and the rear link rod 34 are opened in the flange member 32 and the track frame 31 is swingably connected back and forth.

That is, the flange member 32, the front and rear pair of link rods 33 and 34, and the track frame 31 form a four-bar link structure.

The swell 12 is formed in a disc shape. The swirling wheel 12 is rotatably mounted on the front end side of the track frame 31 by a pressurizing mechanism 35 such as oil pressure and the swirling wheel 12 is rotatably mounted on the support shaft on the rear end side of the track frame 31 Respectively. The paddle wheel 12 provided at the front end side of the track frame 31 is urged in the direction away from the drive wheel 11 by the pushing mechanism 35 to apply tension to the elastic crawler 1. [

The rotatable wheels 13 are arranged side by side between the paddle wheels 12 arranged before and after the track frame 31. [ The rotary wheel 13 is provided with a shaft portion 13a rotatably mounted on the track frame 31 and a pair of wheel portions 13a provided on both sides of the shaft portion 13a and having a diameter larger than that of the shaft portion 13a 13b.

The power from the engine is transmitted to a drive shaft (not shown) connected to the drive wheel 11 so that the drive wheel 11 is rotated to drive the drive wheel 11 and the bouncing wheel 12 provided between the swinging wheel 12 provided at the front portion of the track frame 31 and the swinging wheel 12 provided at the rear portion of the track frame 31 and between the swinging wheel 12 The elastic crawler 1 circulates between the drive wheel 11 and the drive wheel 11.

In the present embodiment, the circumferential direction (direction of arrow S in Fig. 3) of the elastic crawler 1 is referred to as a "crawler circumferential direction" and the width direction of the rubber crawler (direction of arrow W in Fig. .

In the present embodiment, the elastic crawler 1 wound around the drive wheel 11, the swirling wheel 12 and the turning wheel 13 to form an annular shape (including an annular shape, an elliptic annular shape, a polygonal annular shape, 4) will be referred to as a "crawler inner peripheral side" and the outer peripheral side of the elastic crawler 1 (on the side of the arrow OUT direction in FIG. 4) will be referred to as a "crawler outer peripheral side". The direction of the arrow IN and the direction of the arrow OUT in Fig. 4 indicate the inner and outer directions of the elastic crawler 1 in a wound state.

On the other hand, the crawler circumferential direction and the crawler width direction are orthogonal when the elastic crawler 1 is viewed from the outer circumferential side or the inner circumferential side.

The elastic crawler 1 will be described with reference to Figs. 3 to 5. Fig.

As shown in Fig. 3, the elastic crawler 1 is made up of a plurality of bumps 41 made of a metal material and spaced apart from each other in the circumferential direction of the crawler (at a constant interval in this embodiment) of the elastic body 40 formed of rubber material have. The core 41 extends in the crawler width direction and has a pair of wing portions 41a that protrude outward in the crawler width direction from the central portion in the crawler width direction. The core 41 has a pair of core protrusions 41b protruding from the base portion of the pair of wing portions 41a toward the inner circumferential side of the crawler.

The core projection 41b is formed in a substantially triangular shape when viewed from the side of the crawler (when viewed from the width direction of the crawler). The tip end side of the core projection 41b protrudes from the inner peripheral portion 51 of the elastic body 40. [ The protrusion is covered with a rubber material such as a rubber material constituting the elastic body 40 to form a plurality of rubber protrusions 53 in the inner peripheral portion 51. [

On the other hand, in the present embodiment, the projecting portion of the core projection 41b is covered with a rubber material, but the projecting portion may not be covered with a rubber material.

The drive wheel 11 and the swirling wheel 12 are guided by the rubber projections 53 and pass between the pair of rubber projections 53. The pair of wheel portions 13b of the rotatable wheel 13, Are configured so as to pass through the pair of rubber projections (53) and on both sides in the width direction of the crawler, respectively.

A pair of right and left teeth portions 11b of the drive wheel 11 are inserted into the inner peripheral portion 51 of the elastic body 40 between the core pieces 41 adjacent to each other in the circumferential direction of the crawler A pair of latching recesses 61 are formed. More specifically, the latching concave portion 61 is formed between the rubber protrusions 53 adjacent to the elastic member 40 in the circumferential direction of the crawler and depressed toward the outer circumferential side of the crawler. When the crawler is viewed from the side, it has a substantially inverted trapezoidal shape have.

As shown in Figs. 3 and 4, the inner peripheral portion 51 of the elastic body 40 is provided with a pair of engaging recessed portions 61 formed between the core 41 adjacent in the crawler circumferential direction and side by side in the crawler width direction, Shaped supporting portions 71 protruding from the inner circumferential side of the crawler.

The ceiling face 72 of the support portion 71 abuts against the outer peripheral face 11c of the wheel portion 11a of the drive wheel 11 to support the drive wheel 11. The ceiling face 72 of the support portion 71 abuts against the outer circumferential face 12a of the swirl ring 12 to support the swirl ring 12.

5, the inner peripheral portion 51 of the elastic body 40 is provided with a wheel supporting portion 73 which is raised at both sides in the width direction of the crawler with a pair of rubber projections 53 interposed therebetween. The front wheel supporting portion 73 is continuous along the circumferential direction of the crawler and the front surface of the crown is flat when viewed from the side so that it abuts against the outer circumferential surface 13c of the wheel portion 13b of the wheel 13, 13).

As shown in Fig. 6, a pair of block-shaped lugs 81, which extend in the width direction of the crawler, are formed on the outer peripheral portion 52 of the elastic body 40 in parallel to the crawler width direction. These pair of lugs 81 are arranged side by side at intervals (in this embodiment, at regular intervals) in the crawler circumferential direction. A pair of lugs (81) are provided between adjacent core pieces (41) in the circumferential direction of the elastic body (40).

The driving force is transmitted to the elastic crawler 1 as the drive wheel 11 rotates in a state in which the left and right tooth portions 11b of the drive wheel 11 are inserted into the engagement concave portions 61 of the elastic body 40 . The elastic crawler 1 is circulated between the drive wheel 11 and the fluid wheel 12 and between the fluid wheel 12 and the fluid wheel 12 so that the tractor 3 having the crawler traveling device 2 . At this time, the fluidized bed wheel 12 is sequentially shifted from the ceiling face 72 of the support portion 71 to the ceiling face 72 of the support portion 71 adjacent to the crawler circumferential direction, (Not shown). The driving wheel 11 is sequentially shifted from the ceiling face 72 of the support portion 71 to the ceiling face 72 of the support portion 71 neighboring in the crawler circumferential direction so that the ceiling face 72 of each support portion 71 (72).

On the other hand, the ceiling face 72 of the support portion 71 is brought into contact with the outer peripheral surface 11c of the drive wheel 11, and a driving force is transmitted to the abutting portion by a friction transferring force. That is, the drive wheel 11 is supported not only by the engagement of the toothed portion 11b and the engagement concave portion 61, but also the engagement between the ceiling face 72 of the support portion 71 and the outer peripheral surface 11c of the drive wheel 11, To transmit the driving force.

3 to 5, the supporting member 71 of the elastic body 40 is extended from one of the engaging recesses 61 to the other engaging recess 61, and the ceiling face 72 is extended in the crawler circumferential direction A dividing groove 91 is formed. The dividing groove 91 is formed by cutting a groove from the ceiling surface 72 toward the outer circumferential side of the crawler.

7, when the elastic crawler 1 is wound around the drive wheel 11, the support portion 71 abutting against the outer peripheral surface 11c of the drive wheel 11 and the outer peripheral surface 12a of the fluid wheel 12 is bent . At this time, a compressive force due to bending is generated in the support portion 71 of the elastic crawler 1, but the compression force is released by providing the split groove 91 in the support portion 71 so that the bending in the circumferential direction of the crawler in the support portion 71 The resistance can be reduced.

Likewise, when the elastic crawler 1 is wound on the swell ring 12, the dividing groove 91 is provided in the supporting portion 71, so that the bending resistance in the supporting portion 71 in the circumferential direction of the crawler can be reduced.

The elastic crawler 1 is reduced in bending resistance in the circumferential direction of the crawler and becomes easily bent along the outer circumferential surface 11c or the outer circumferential surface 12a when the crawler 1 is wound around the drive wheel 11 or the swirling wheel 12 .

The bending resistance in the crawler circumferential direction means that the elastic crawler 1 is wound around the drive wheel 11 and the swell 12 and bent along the outer circumferential surface 11c of the drive wheel 11 and the outer circumferential surface 12a of the swell 12 And the resistance to bending deformation at the time of bending.

Hereinafter, the dividing groove 91 according to an embodiment of the present invention will be described in detail.

3, the dividing grooves 91 are configured such that the width of the grooves (the length in the crawler circumferential direction) is widened toward the outside in the width direction of the elastic crawler 1.

In this embodiment, the groove width of the dividing groove 91 is formed so as to be widened from the central portion to the peripheral portion (outside in the width direction). The groove width W1 at the central portion of the dividing groove 91 is formed to be narrower than the groove width W2 at the peripheral portion of the dividing groove 91 as shown in Figs. The groove 71 is formed in the supporting portion 71 to form the dividing groove 91. Specifically, the dividing groove 91 is formed such that when the crawler is viewed from the plane, the supporting portion 71 is substantially divided into two portions, and the substantially triangular convex portion having the ceiling portion at the center in the crawler width direction is opposed. The dividing groove 91 becomes larger as the sectional area of the dividing groove 91 in the circumferential cross section of the elastic body 40 is directed toward the outside in the width direction of the elastic body 40. [

On the other hand, in the present embodiment, when the crawler is viewed from the plane, the groove 91 is formed by forming the substantially triangular convex portion on the support portion 71, But it is not limited to the above shape because it may be configured to extend toward the outside of the direction. For example, when the support portion 71 sees the crawler in a plane view (as viewed from the inside and outside of the crawler), the groove is cut in a curved shape, so that the division groove 91 can be formed.

Further, in the present embodiment, the dividing groove 91 is provided so as to divide the supporting portion 71 into substantially equal halves. However, the supporting portion 71 may not be divided equally.

On the other hand, the groove width of the division groove 91 may be widened from one side of the crawler width direction to the other side. For example, the dividing grooves 91 may be formed by cutting grooves in the supporting portions 71 so that the crawler of the dividing grooves 91 is formed in a substantially trapezoidal shape when viewed from the plane.

8, a supporting portion 71 is provided in the mud or the like (the shaded portion in Fig. 8) staying in the dividing groove 91 when the elastic crawler 1 is wound around the driving wheel 11 or the swirling wheel 12 The sidewall 92 (the opposed grooved surfaces on the support portion 71) forming the dividing grooves 91 are brought close to each other and a compressive force in the crawler circumferential direction is generated. The mud or the like is subjected to a component force in a direction parallel to the side wall 92 of compressive force and a component force in a direction perpendicular to the side wall 92. The mud or the like staying in the dividing groove 91 is pushed outward in the crawler width direction of the dividing groove 91 by a force in a direction parallel to the side wall 92. [

The dividing groove 91 is configured such that its groove width widens toward the outside in the width direction of the elastic crawler 1 so that when the mud staying in the dividing groove 91 is discharged, It does not.

When the support portion 71 is bent, the mud or the like staying in the division groove 91 is pushed outward in the crawler width direction without becoming the obstacle of the side wall 92.

As described above, by forming the groove width (length in the crawler circumferential direction) of the dividing groove 91 to be wider toward the outside in the width direction of the elastic crawler 1, the mud dropping property in the dividing groove 91 can be improved have. It is possible to suppress the increase in flexural resistance in the circumferential direction of the crawler in the support portion 71 by improving the mud dropping property in the dividing groove 91. [ That is, it is possible to suppress the increase in the running resistance of the crawler traveling device 2.

Further, by improving the muddy-dropping property in the dividing groove 91, the frictional force between the ceiling surface 72 of the support portion 71 and the outer peripheral surface 11c of the drive wheel 11 is suppressed, 72 does not decrease. This makes it possible to suppress the increase in the power ratio transmitted between the teeth 11b of the drive wheel 11 and the engaging recess 61 and to maintain the durability of the engaging recess 61. [

Further, as shown in Fig. 5, the depth of the dividing groove 91 (the length in the inward and outward directions of the crawler) is configured to deepen outward in the crawler width direction.

In this embodiment, the bottom surface 93 of the dividing groove 91 is composed of an inclined surface inclined toward the outside of the width direction (crawler width direction) of the elastic crawler 1. The bottom surface 93 of the dividing groove 91 is inclined downward from the center in the width direction of the elastic crawler 1 to the outside in the width direction.

4 and 5, the depth D2 of the peripheral portion (on the crawler width direction end side) of the dividing groove 91 is deeper than the depth D1 of the central portion of the dividing groove 91, . The dividing groove 91 becomes larger as the sectional area of the dividing groove 91 in the circumferential cross section of the elastic body 40 is directed toward the outside in the width direction of the elastic body 40. [

When the supporting portion 71 is bent when the elastic crawler 1 is wound around the driving wheel 11 or the swirling wheel 12, the side wall 92 forming the dividing groove 91 is formed in the mud staying in the dividing groove 91, (The opposing grooves cut surfaces in the support portion 71) are brought close to each other and a compressive force in the crawler circumferential direction is generated. The dividing groove 91 improves the muddy-dropping property by allowing the mud compressed by the compressive force to flow outward in the crawler width direction along an inclined surface that deepens toward the outside in the crawler width direction. Similarly, by forming the depth of the dividing groove 91 (the length in the inward and outward directions of the crawler) to be deeper toward the outside in the width direction of the elastic crawler 1, 93) is not an obstacle, it is possible to further improve the muddy slipperiness.

As described above, it is possible to suppress the increase of the bending resistance in the circumferential direction of the crawler in the support portion 71 by improving the mud dropping property in the dividing groove (91). That is, it is possible to suppress the increase in the running resistance of the crawler traveling device 2.

It is also possible to suppress the decrease in frictional force between the ceiling face 72 of the support portion 71 and the outer peripheral face 11c of the drive wheel 11 by improving the mud dropping property in the split groove 91, The ratio of the power transmitted by the frictional transfer force generated in the friction member 72 does not decrease. This makes it possible to suppress the increase in the power ratio transmitted between the teeth 11b of the drive wheel 11 and the engaging recess 61 and to maintain the durability of the engaging recess 61. [

On the other hand, in the present embodiment, the bottom surface 93 of the dividing groove 91 is inclined downward from the center in the crawler width direction toward the outside in the crawler width direction, but is not limited thereto. For example, the bottom surface 93 may be curved so as to protrude upward.

The dividing groove 91 may be formed such that the depth of the dividing groove 91 is deeper toward the outside in the crawler width direction, and the dividing groove may have a shape without a bottom surface. For example, the dividing groove 91 may be formed in a V-shape when the crawler is viewed from the side, and may be formed such that its depth is deeper toward the outside in the crawler width direction.

The dividing groove 91 is formed such that the groove width and the groove depth are respectively increased toward the outside in the width direction of the elastic body 40 so that the sectional area of the dividing groove 91 in the circumferential cross section is outside the width direction of the elastic body 40 .

Specifically, as shown in Fig. 9, the dividing groove 91 can be formed so that the shape of the circumferential section of the elastic body 40 is substantially rectangular. The dividing groove 91 is formed such that the groove width W2 at the peripheral portion in the crawler width direction is larger than the groove width W1 at the center portion in the crawler width direction. In the above-described configuration, the dividing groove 91 becomes larger as the cross-sectional area of the dividing groove 91 in the circumferential cross section of the elastic body 40 is directed toward the outside in the width direction of the elastic body 40.

10, the dividing groove 91 may be formed so that the shape of the circumferential section of the elastic body 40 is substantially rectangular. The dividing groove 91 is formed such that the depth D2 of the peripheral portion in the crawler width direction is larger than the depth D1 in the center portion in the crawler width direction. In the above-described configuration, the dividing groove 91 becomes larger as the cross-sectional area of the dividing groove 91 in the circumferential cross section of the elastic body 40 is directed toward the outside in the width direction of the elastic body 40.

Further, as shown in Fig. 11, the dividing groove 91 can be formed so that the circumferential cross section of the elastic body 40 is substantially V-shaped. The groove width W2 at the peripheral portion of the crawler width direction and the depth D2 at the peripheral portion of the crawler width direction are respectively larger than the groove width W1 at the center portion in the crawler width direction and the depth D1 at the center portion in the crawler width direction, . In the above-described configuration, the dividing groove 91 becomes larger as the cross-sectional area of the dividing groove 91 in the circumferential cross section of the elastic body 40 is directed toward the outside in the width direction of the elastic body 40.

The elastic crawler 101 according to another embodiment will be described with reference to Figs. 12 to 16. Fig.

As shown in Figs. 12 and 13, the inner peripheral portion 51 of the elastic body 40 is alternately formed with block-shaped support portions 71a and 71b protruding toward the inner circumferential side of the crawler along the crawler circumferential direction. The support portion 71a and the support portion 71b are alternately formed so that the concave portion 111 is formed between the support portion 71a and the support portion 71b which are adjacent to each other in the circumferential direction of the crawler.

The ceiling face 72a of the support portion 71a abuts the outer peripheral face 11c of the wheel portion 11a of the drive wheel 11 to support the drive wheel 11. The ceiling face 72a of the support portion 71a abuts on the outer circumferential face 12a of the swirl ring 12 to support the swirl ring 12.

Likewise, the ceiling surface 72b of the support portion 71b abuts against the outer peripheral surface 11c of the wheel portion 11a of the drive wheel 11 to support the drive wheel 11. The ceiling surface 72b of the support portion 71b abuts against the outer circumferential surface 12a of the swirl ring 12 to support the swirl ring 12.

14, the inner peripheral portion 51 of the elastic body 40 is formed with the wheel supporting portions 73 each having a pair of rubber projections 53 sandwiched therebetween and protruding on both sides in the crawler width direction. The front wheel supporting portion 73 is continuous along the crawler circumferential direction and has a flat top face when viewed from the side of the crawler so as to abut against the outer circumferential face 13c of the wheel portion 13b of the rotatable wheel 13, ).

As shown in Fig. 15, a pair of block-shaped lugs 81, each extending in the crawler width direction, are formed on the outer peripheral portion 52 of the elastic body 40 in parallel to the crawler width direction. These pair of lugs 81 are arranged side by side at intervals (in this embodiment, at regular intervals) in the crawler circumferential direction. A pair of lugs (81) are provided between adjacent core pieces (41) in the circumferential direction of the elastic body (40).

The driving force is transmitted to the elastic crawler 101 as the drive wheel 11 rotates in a state in which the left and right tooth portions 11b of the drive wheel 11 are inserted into the engagement concave portion 61 of the elastic body 40 . The elastic crawler 101 is circulated between the drive wheel 11 and the fluid wheel 12 and between the fluid wheel 12 and the fluid wheel 12 so that the tractor 3 having the crawler traveling device 2 . At this time, the fluidized-bed wheel 12 moves from the ceiling face 72a (the ceiling face 72b) of the supporting portion 71a (supporting portion 71b) to the ceiling face of the supporting portion 71b (supporting portion 71a) 72b of the supporting portions 71a, 71b while alternately shifting to the top surface 72b (top surface 72a). Likewise, the drive wheel 11 also rotates from the ceiling face 72a (the ceiling face 72b) of the supporting portion 71a (supporting portion 71b) to the ceiling face of the supporting portion 71b (supporting portion 71a) 72b of the respective supporting portions 71a, 71b while alternately changing over the top surface 72b (top surface 72a).

On the other hand, the ceiling surfaces 72a and 72b of the support portions 71a and 71b are brought into contact with the outer peripheral surface 11c of the drive wheel 11, and a driving force is transmitted to the abutting portion by a friction transfer force. That is, the drive wheel 11 is supported not only by the engagement of the toothed portion 11b and the engagement recess portion 61 but also by the engagement of the top surfaces 72a and 72b of the support portions 71a and 71b and the outer peripheral surface 11c of the drive wheel 11, As a power transmission surface.

As shown in Figs. 12 and 13, the support portions 71a are formed between the adjacent cores 41 in the circumferential direction of the elastic body 40. As shown in Fig. The supporting portion 71a is provided at a predetermined interval from the core 41 adjacent to the supporting portion 71a in the circumferential direction of the elastic body 40. [

The support portions 71b are formed on a plurality of core pieces 41 that are buried with intervals in the circumferential direction of the elastic body 40. [ Specifically, it is formed between a pair of core projections 41b protruding toward the inner circumferential side of the crawler of the core 41. The support portion 71b is provided at a predetermined interval in the circumferential direction of the elastic body from the support portion 71a adjacent to the crawler circumferential direction.

The predetermined interval is defined by the recess 111 formed between the support 71a and the support 71b adjacent to the crawler circumferential direction when the elastic crawler 101 is mounted on the crawler traveling device 2, (11) and the swirling wheel (12). The predetermined interval is a distance between the support portions 71a and 71b when the elastic crawler 101 is mounted on the crawler traveling device 2 to support the tension imparted by the pressing mechanism 35 of the crawler traveling device 2 The distance between the support 71a and the support 71b which are adjacent to each other in the circumferential direction of the crawler.

In the present embodiment, the length of the support portion 71b in the crawler circumferential direction is made substantially equal to the length in the crawler circumferential direction between the core pieces 41. [

The elastic crawler 101 is wound around the drive wheel 11 and the swirling wheel 12 by being bent along the outer peripheral surface 11c of the drive wheel 11 and the outer peripheral surface 12a of the swell 12. That is, when the elastic crawler 101 is bent, a compression force due to bending is generated on the inner peripheral portion 51 side of the elastic crawler 101.

16, when the elastic crawler 101 is bent, the support portions 71a, 71b on the inner peripheral portion 51 side of the elastic body 40 are brought into contact with each other by the recessed portion 111 provided therebetween, The compression force does not act. Therefore, the compressive force generated when the elastic crawler 101 is bent bends on the bottom surface of the concave portion 111.

On the other hand, in the elastic crawler 101, the recess 111 of the elastic crawler 101 is thinner than the thickness of the support portions 71a and 71b in the inward and outward directions of the crawler. Therefore, the compressive force generated when the elastic crawler 101 is bent is reduced.

That is, since the compressive force generated on the inner peripheral portion 51 side of the elastic crawler 101 is smaller than in the case where the recess 111 is not provided, the flexural resistance of the elastic crawler 101 can be reduced. Therefore, the running resistance due to the flexural resistance of the elastic crawler 101 can be reduced.

The core 41 has a higher bending stiffness than the rubber material constituting the elastic body 40. Therefore, when the elastic crawler 101 is bent, the core 41 is positioned closer to the core 41 than the elastic body 40 provided on the core 41 41 are easily bent.

The support portion 71a is provided at a predetermined interval from the core 41 so that the recess portion 111 is formed between the core 41 and the support portion 71a adjacent to each other in the circumferential direction of the crawler. Therefore, when the elastic crawler 101 is bent, the concave portion 111 between the core 41 and the support portion 71a is bent, so that the compression force can be effectively reduced and the flexural resistance of the elastic crawler 101 can be reduced.

On the other hand, in the present embodiment, the support portion 71b is provided on the core 41, but the support portion 71b may not be disposed. That is, a plurality of support portions 71a may be arranged side by side along the crawler circumferential direction.

≪ Industrial Availability >

INDUSTRIAL APPLICABILITY The present invention can be applied to an elastic crawler and a crawler traveling apparatus having the same.

1: elastic crawler, 2: crawler traveling device, 11: driving wheel, 12: paddle wheel, 40: elastic body, 41: core, 41b: core projection, 61: latching recess, 71: supporting portion, 71a, 71b: A front surface of the ceiling surface, 72a and 72b, a ceiling front surface, 91: a dividing groove, 92: a side wall, 93: a bottom surface, 101: an elastic crawler,

Claims (8)

An elastic member of an endless belt shape wound on a drive wheel and a pendulum, a supporting portion formed on the inner peripheral surface of the elastic member and supported by the outer peripheral surface of the driving wheel and the fluid wheel, and a dividing groove for dividing the supporting portion in the circumferential direction of the elastic member and,
Sectional area of the dividing groove in the circumferential cross section of the elastic body is increased toward the outside in the width direction of the elastic body,
And the depth of the dividing groove is deeper toward the outside in the width direction of the elastic body. The method according to claim 1,
And the width of the dividing groove is widened outward in the width direction of the elastic body. delete delete A drive wheel for transmitting driving force,
A pivoting wheel disposed rotatably, and
The crawler traveling device according to claim 1 or 2, wherein the crawler is wound on the driving wheel and the bouncing wheel. A plurality of cores embedded in the elastic members of the endless belt wound on the drive wheels and the swirling rolls and spaced apart from each other in the circumferential direction of the elastic members and a support portion formed on the inner circumferential surface of the elastic member, Respectively,
Wherein the support portion is formed by protruding between neighboring core pieces and is provided at a predetermined interval in the circumferential direction of the elastic body from the neighboring core pieces,
Wherein the support portion is formed between the neighboring cores and on the core,
And a support portion formed on the core, the elastic crawler being provided at a predetermined interval in a circumferential direction of the elastic body from a support portion formed between the neighboring cores. delete A drive wheel for transmitting driving force,
A pivoting wheel disposed rotatably, and
The crawler traveling device according to claim 6, wherein the elastic crawler is wound on the drive wheel and the swirling wheel.
KR1020167032996A 2014-05-13 2015-05-11 Elastic crawler and crawler travelling device equipped with same KR101878583B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP2014099571A JP2015214305A (en) 2014-05-13 2014-05-13 Elastic crawler and crawler travel device comprising the same
JPJP-P-2014-099571 2014-05-13
JP2014113556A JP6300408B2 (en) 2014-05-30 2014-05-30 Elastic crawler and crawler traveling apparatus provided with the same
JPJP-P-2014-113556 2014-05-30
PCT/JP2015/063464 WO2015174367A1 (en) 2014-05-13 2015-05-11 Elastic crawler and crawler travelling device equipped with same

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KR101878583B1 true KR101878583B1 (en) 2018-07-13

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Citations (5)

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JPH0342383A (en) * 1989-07-07 1991-02-22 Komatsu Ltd Lag for rubber crawler
JPH05213238A (en) * 1992-02-05 1993-08-24 Bridgestone Corp Devided type rubber crawler
JP2009255863A (en) * 2008-04-21 2009-11-05 Bridgestone Corp Rubber crawler
JP2013107471A (en) * 2011-11-18 2013-06-06 Bridgestone Corp Elastic crawler
JP2013107472A (en) * 2011-11-18 2013-06-06 Bridgestone Corp Elastic crawler

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Publication number Priority date Publication date Assignee Title
JPH01158385U (en) * 1988-04-25 1989-11-01
JPH11222170A (en) 1998-02-04 1999-08-17 Bridgestone Corp Inner circumference driving type rubber crawler
US6474756B2 (en) * 2000-08-30 2002-11-05 Komatsu Ltd. Rubber crawler belt
CN100465047C (en) * 2003-12-04 2009-03-04 杰尼士产业株式会社 Elastic pedrail
JP5643546B2 (en) * 2010-05-31 2014-12-17 株式会社ブリヂストン Crawler travel device
JP5770560B2 (en) * 2011-08-05 2015-08-26 株式会社ブリヂストン Elastic crawler and crawler traveling device

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Publication number Priority date Publication date Assignee Title
JPH0342383A (en) * 1989-07-07 1991-02-22 Komatsu Ltd Lag for rubber crawler
JPH05213238A (en) * 1992-02-05 1993-08-24 Bridgestone Corp Devided type rubber crawler
JP2009255863A (en) * 2008-04-21 2009-11-05 Bridgestone Corp Rubber crawler
JP2013107471A (en) * 2011-11-18 2013-06-06 Bridgestone Corp Elastic crawler
JP2013107472A (en) * 2011-11-18 2013-06-06 Bridgestone Corp Elastic crawler

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KR20160147931A (en) 2016-12-23
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