JPH08156850A - Elastic caterpillar band for crawler - Google Patents

Abstract

PURPOSE: To prevent a core body buried in the inside of a band-shaped main body of an elastic caterpillar band for a crawler from peeling off from the band-shaped main body and to accomplish reduction of weight. CONSTITUTION: In the inside of a band-shaped main body 2 of an elastic caterpillar band 1, a main core body 11 provided with a wing part 12 extending in the band-shaped main body 2 width direction and an auxiliary core body 13 provided with a short wing part 14 with the length shorter than that of the wing part 12 in the band-shaped main body 2 width direction are buried, while the auxiliary core body 13 is formed thinner than the main core body 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elastic crawler track for crawlers.

[0002]

2. Description of the Related Art An elastic crawler track for crawlers has an endless belt-shaped body made of an elastic material such as rubber, and a lug which is pulled into the belt-shaped body and generates a traction force. , Drive wheels such as sprockets and drum wheels provided on working machines such as combine harvesters and harvesters, and driven wheels and rolling wheels.

When the drive wheels provided in the working machine are sprocket-shaped, a core body having wing portions extending in the width direction of the belt-shaped body is engaged with all the teeth of the sprocket inside the belt-shaped body in the circumferential direction of the belt-shaped body. Some are buried at intervals. When the core bodies are embedded in the strip-shaped main body so as to mesh with all the teeth of the drive wheel, the interval between the adjacent core bodies is reduced. Although the vibration due to the difference in rigidity can be suppressed, the number of cores is increased, the weight of the elastic crawler belt is increased, and the cost is increased.

Therefore, in order to solve these problems, as described in Japanese Patent Application Laid-Open No. 4-283179, there is provided a wing portion inside the strip-shaped main body at intervals in the circumferential direction of the strip-shaped main body. There is one in which a blade core and a bladeless core having no blade are alternately embedded to suppress vibration and reduce weight and cost.

[0005]

However, as described above, when the wingless core body having no wing portion is used, the portion to be bonded to the belt-shaped main body is small, and when the teeth of the drive wheels are engaged, the wingless body is wingless. There is a problem that the core body comes off from the strip-shaped body. Therefore, the present invention provides an elastic crawler crawler track in which a core body embedded in a tooth of a drive wheel is embedded, the weight and cost of the crawler elastic crawler track are reduced, and the core body is prevented from being separated from the belt-shaped main body. The purpose is to

[0006]

DISCLOSURE OF THE INVENTION According to the present invention, a core body in which the teeth of a sprocket-shaped drive wheel 3 which gives a driving force to the belt-shaped body 2 meshes with the inside of the belt-shaped body 2 which is endlessly formed of an elastic material. In the elastic crawler track for crawler in which 11 and 13 are embedded at intervals in the circumferential direction of the band-shaped main body 2, the following technical means are taken to achieve the above-mentioned object.

That is, the core bodies 11 and 13 are formed by alternately embedding a main core body 11 and a sub-core body 13, and the main core body 11 has a wing portion 12 extending in the width direction of the strip-shaped main body 2. And the sub-core 13 has a short wing portion 14 having a length shorter than that of the wing portion 12. The sub-core body 13 is formed to be thinner than the main-core body 11.

Further, the surface 13b of the sub-core body 13 on the grounding surface 2 side of the strip-shaped main body 2 has the strip-shaped main body 2 of the main core body 11.
The auxiliary core body 13 is embedded in the inside of the belt-shaped body 2 so as to be located on the inner peripheral surface side of the belt-shaped body 2 with respect to the surface 11b on the ground contact surface side. A tensile body 1 for restricting the extension of the strip-shaped body 2 inside the entire periphery of the strip-shaped body 2 on the ground plane side of the strip-shaped body 2 from the core body 13.
5 is embedded, and the distance between the tensile body 15 and the sub-core body 13 is
It is characterized in that it is wider than the distance between the tensile body 15 and the main core 11.

Further, the strip-shaped body 2 of the sub-core 13
The surface 13a on the inner peripheral surface side is located on the same plane as the surface 11a on the inner peripheral surface side of the strip-shaped body 2 of the main core 11.

[0010]

When the teeth of the drive wheel 3 mesh with the sub-core body 13 embedded in the strip-shaped main body 2, the sub-core body 13 is firmly embedded in the strip-shaped main body 2 by its short wings 14. For,
It is hardly peeled off from the belt-shaped main body 2, and the auxiliary core body 13 is made thinner than the main core body 11 to reduce the weight. In addition, the distance between the sub-core body 13 and the tensile body 15 embedded inside the entire circumference of the strip-shaped body 2 on the ground plane side of the strip-shaped body 2 relative to the main core body 11 and the sub-core body 13 is widened. The auxiliary core body 13 does not come into contact with the tensile body 15.

[0011]

Embodiments of the present invention will be described with reference to FIGS. In FIG. 4, an elastic crawler belt 1 is made of an elastic material such as rubber and is provided with an endless belt-shaped body 2 and a circumferentially-spaced body of the belt-shaped body 2, which is a lug for digging into the ground and generating a traction force. Drive wheels 3, driven wheels 4, provided on a machine frame 8 of a working machine such as a combine harvester or the like,
It is also wound around the rolling wheel 5.

The drive wheel 3 has a sprocket shape,
The work machine is run by being rotated by power obtained from an engine mounted on the work machine and transmitting the power to the elastic crawler belt 1. Engagement holes 6 into which the teeth of the sprocket-shaped drive wheels 3 are inserted in every one pitch are formed in the strip-shaped main body 2 at intervals in the strip longitudinal direction (circumferential direction) at the central portion in the width direction of the strip-shaped main body 2. Provided between the engagement holes 9,
The main body 11 and the sub-core body 13 for transmitting power to the elastic crawler belt 1 are alternately embedded in the belt-shaped main body 2 in the circumferential direction so as to mesh with the teeth of the sprocket that is the drive wheel 3.

The lug 7 is provided so as to project toward the ground plane side of the strip-shaped body 2 in the embedded portion of the main core body 11 and the sub-core body 13. The main core 11 and the sub core 13
Is made of metal or hard resin, and the elastic track 1
Restricts the position of the elastic crawler belt 1 in the width direction so as not to come off from the driven wheel 4 and the rolling wheel 5, and the belt-shaped main body 2
It has a pair of protrusions 10 protruding toward the inner peripheral surface side.
The main core 11 has wings 12 extending in the width direction of the strip-shaped body 2 on both outer sides of the protrusion 10, and the auxiliary core 13 has the protrusions 10. It has a short wing portion 14 extending in the width direction of the strip-shaped main body 2 on both outer sides of the portion and having a length shorter than the length of the wing portion 12. Further, since the rigidity of the elastic crawler belt 1 is substantially maintained by the main core body 11, the auxiliary core body 13 can be formed thinner than the main core body 11.

Tensile for restricting the circumferential extension of the strip-shaped body 2 to the left and right inside the entire circumference of the strip-shaped body 2 on the grounding surface side of the strip-shaped body 2 with respect to the main core 11 and the sub-core 13. The body 15 is buried. As shown in FIG. 1, the main core 1
1 and the sub-core body 13 so that the meshing with the teeth of the drive wheel 3 does not vary, a surface 13a of the sub-core body 13 on the inner peripheral surface side of the strip-shaped body 2 and the main core body 11 are formed. And the surface 11a on the inner peripheral surface side of the strip-shaped main body 2 is embedded inside the strip-shaped main body 2 so as to be located on the same plane, and the sub-core 13 is thinner than the main core 11. Therefore, the surface 13b of the sub-core body 13 on the grounding surface side of the strip-shaped body 2 is closer to the inner peripheral surface side than the surface 11b of the main core body 11 on the grounding surface side of the strip-shaped body 2. positioned. The tensile body 15 embedded in the entire circumference of the strip-shaped body 2 and the sub-core body 13 are spaced apart from each other by the tensile body 15 and the main core body 1.
It is wider than the interval with 1.

Then, the main core 11 and the sub-core 1
As shown in FIG. 2, 3 are alternately embedded inside the strip-shaped main body 2 at intervals in the circumferential direction of the strip-shaped main body 2, and the teeth of the drive wheels are provided in the core bodies 11 and 13, respectively. The core bodies 11 and 13 are engaged with each other, and
Widen the adhesive area with the strip-shaped main body 2 with 2, 14,
Since they are firmly adhered, when the teeth of the drive wheel 3 are engaged with each other, the power from the drive wheel 3 can be surely obtained without coming off from the strip-shaped main body 2, and the sub core 13 Since the short blade portion 14 is formed shorter than the blade portion 12 of the main core 11, the weight can be reduced.

Then, the sub-core 13 is connected to the main-core 11
The weight is further reduced by forming it into a thinner shape, and since the distance between the tensile body 15 and the short blade portion 14 of the sub-core body 13 is widened, the short blade portion 14 is formed. Does not contact the tensile body 15 and the tensile body 15 is not damaged or cut. Further, as shown in FIG. 3, when the elastic crawler belt 1 passes through the drive wheel 3 and the driven wheel 4, the elastic crawler belt 1 bends.
Since the gap between the sub-core 13 and the tensile body 15 is wide, the elastic deformation of the rubber layer in this gap is large.
The strip-shaped main body 2 of the embedded portion of 3 has the drive wheels 3 without bending.
Alternatively, it can be smoothly deformed along the driven wheel 4.

The length of the sub-core body 13 in the width direction of the strip-shaped body 2 is set such that the sub-core body 13 does not come off from the strip-shaped body 2 due to the engagement with the drive wheel 3. However, it is preferable that the length is about half the length of the main core 11. FIG. 5 shows a second embodiment of the present invention, in which the auxiliary core body 13 has a short wing portion 14 shorter than the length of the wing portion 12 of the main core body 11 in the width direction of the strip-shaped main body 2, The sub-core body 13 and the main core body 11 have the same thickness. Also in this case, the core bodies 11 and 13 are firmly embedded in the strip-shaped body 2 by the wing portions 12 and 14, It does not come off from the belt-shaped body 2 when meshed with the teeth of the drive wheel 3, and the short blade portion 14 of the sub-core 13
Can be made lighter by forming the length shorter than the wing portion 12 of the main core 11.

In the first and second embodiments, when the main core body 11 and the sub-core body 13 are buried alternately in the circumferential direction, 1
It may be alternate every other or alternate every two.

[0019]

As described above in detail, in the present invention, the main core body and the sub-core body which mesh with the teeth of the drive wheel are alternately embedded in the belt-shaped main body in the circumferential direction. Since it is firmly embedded inside the strip-shaped body by the wing part, it hardly peels off from the strip-shaped body even when it engages with the teeth of the drive wheel, and the sub-core body is formed in a thin shape. In order to reduce the weight and cost, and to widen the distance between the sub-core body and the tensile body embedded inside the entire circumference of the strip-shaped body on the grounding surface side of the strip-shaped body with respect to the main core and the sub-core. Therefore, the sub-core does not come into contact with the tensile body and the tensile body is not damaged or cut. Further, when the elastic crawler belt passes through the drive wheel and the driven wheel, the elastic crawler belt bends, but at this time, since the distance between the sub core body and the tensile body is wide, The elastic deformation of the rubber layer in the space is large, and the elastic crawler belt can be smoothly deformed along the drive wheel or the driven wheel without being bent at the sub-core embedded portion, so that cracks or cracks in the belt-shaped body can be prevented. , Can prevent cracking.

[Brief description of drawings]

FIG. 1 is a sectional view taken along line AA of FIG. 2 showing a first embodiment of the present invention.

FIG. 2 is a plan view of an inner peripheral surface of an elastic crawler track for a crawler according to the first embodiment of the present invention.

FIG. 3 is a side view of the elastic crawler track according to the first embodiment of the present invention.

FIG. 4 is a configuration diagram of an elastic crawler track adopting the present invention.

5 is a sectional view showing a second embodiment of the present invention and corresponding to FIG.

[Explanation of symbols]

 1 Elastic Crawler Track 2 Belt-shaped Main Body 3 Drive Wheel 11 Main Core Body 12 Wing Section 13 Sub-Core Body 14 Short Wing Section 15 Tensile Body

Claims (5)

[Claims] 1. A core body (11) with which teeth of a sprocket-shaped drive wheel (3) for applying a driving force to the belt-shaped body (2) mesh with each other inside a belt-shaped body (2) formed of an elastic material in an endless shape. ,
In an elastic crawler crawler in which 13) is embedded at intervals in the circumferential direction of the strip-shaped main body (2), the core body (11, 13) includes a main core body (11) and a sub-core body (13). And are alternately embedded, and the main core body (11)
Is a wing portion (12) extending in the width direction of the strip-shaped main body (2).
The crawler elastic crawler track characterized in that the sub-core (13) has a short wing (14) having a length shorter than that of the wing (12). 2. The sub core (13) is replaced with the main core (1).
It is formed to be thinner than 1).
Elastic crawler for crawler according to. 3. A surface (13b) of the sub-core body (13) on the side of a ground plane of the strip-shaped body (2), the main core body (11).
The sub-core body (13) is embedded in the strip-shaped body (2) so as to be located closer to the inner peripheral surface side of the strip-shaped body (2) than the surface (11b) of the strip-shaped body (2) on the ground plane side. The elastic crawler belt for crawlers according to claim 1 or 2, wherein 4. The main core (11) and the sub-core (1)
3) A tensile body (15) that restricts the extension of the strip-shaped body (2) is embedded inside the entire periphery of the strip-shaped body (2) on the ground plane side of the strip-shaped body (2), and the tensile body ( 15) The distance between the sub-core body (13) and the sub-core body (13) is configured to be wider than the distance between the tensile body (15) and the main core body (11). Elastic crawler for crawler according to. 5. A surface (13a) on the inner peripheral surface side of the strip-shaped body (2) of the sub-core (13) is the main core (11).
The elastic crawler track for crawler according to any one of claims 1 to 4, wherein the elastic crawler track is located on the same plane as the surface (11a) on the inner peripheral surface side of the belt-shaped body (2).