JP4162513B2 - Rubber crawler - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a rubber crawler used as a crawler of a combine crawler traveling device, and more specifically, a plurality of metal cores are embedded in a rubber belt main body at a set interval in a belt circumferential direction, A long long lug and a short short lug with a small left and right width are formed on the outer peripheral surface of the belt body in the same phase as the core metal and the long lugs and short lugs are alternately arranged in the belt circumferential direction. About something.
[0002]
[Prior art]
Conventionally, this type of rubber crawler is a portion of the belt body that is located between the long lug portions that protrude to the left and right outside of the short lug and more than the left and right end portions across the left and right end portions of the long lug. It is known that the entire left and right inner portions are formed in a recess to increase thrust by improving mud embedding by a lug and at the same time reduce the weight (for example, see Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 7-329835
[Problems to be solved by the invention]
However, according to the above prior art, the strength of the portion between the lugs located between the long lugs protruding from the left and right outside of the short lugs of the belt body is insufficient, and as a result, the portion between the lugs The support force at the portion between the lugs is greatly reduced and there is a problem on the support surface.
[0005]
An object of the present invention is to maintain good support performance while increasing thrust and reducing weight.
[0006]
[Means for Solving the Problems]
The features, functions and effects of the rubber crawler according to the present invention according to claim 1 are as follows.
[0007]
〔Characteristic〕
A rubber belt main body is embedded with a plurality of core bars at predetermined intervals in the belt circumferential direction, and a long lug with a large left and right width and a short lug with a small left and right width are in phase with the core metal and are long. A rubber crawler formed on the outer peripheral surface of the belt main body in a state where the scale lugs and the short lugs are alternately arranged in the belt circumferential direction,
A portion located on the left and right outer side than the short lug of the belt body, thereby leaving a ridge of the same or substantially the same height as the portion located between the long lugs and short lugs adjacent in belts circumferential direction In the state, a recess is formed in the portion located between the ridge and the long lug portion facing it in the belt circumferential direction ,
The ridge that bulges on the inner surface of the belt opposite to the outer peripheral surface of the belt where the concave portion is formed, and a long strip that opposes the protrusion in the belt circumferential direction and is left between the concave portions in plan view. It exists in the point formed over the lug part and the site | part containing the said recessed part presence location .
[0008]
[Action]
Rather than forming the entire portion between the long lugs adjacent to each other in the circumferential direction by protruding outward from the short lug, the thrust is increased and the weight is reduced while leaving the portion connected to the short lug as a protrusion. Since the concave portion for forming is formed, the concave portion forming portion is reinforced by the above-mentioned protrusions, and the strength and rigidity between the adjacent long lug portions can be improved and the bending at the time of contact between the portions can be suppressed.
[0009]
〔effect〕
Therefore, it is possible to increase the desired thrust and reduce the weight while improving the support performance.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIG. 1, the combine is connected to the front part of the self-propelled machine body 2 provided with a pair of left and right crawler traveling devices 1 so as to be able to move up and down the harvesting part 3 that harvests the planted cereal and conveys it backwards. The self-propelled machine body 2 is configured to be equipped with a threshing device 4 for threshing cereals from the reaping unit 3, a tank 5 for storing threshed grains, and a boarding operation unit 6.
[0011]
The crawler traveling device 1 is configured by extending a rubber crawler 10 across a front drive sprocket 7, a rear tension ring body 8, and a plurality of grounded rolling wheels 9 juxtaposed in the front-rear direction.
[0012]
As shown in FIGS. 2 and 3, the rubber crawler 10 basically has a plurality of cores for meshing with the drive sprocket 7 at a set interval in the circumferential direction of the rubber belt body 11. The gold 12 is embedded, and the long lug 13 having a large left-right width and the short lug 14 having a small left-right width are in phase with the core metal 12 and the long lugs 13 and the short lugs 14 are alternately arranged in the belt circumferential direction. The belt body 11 is formed on the outer peripheral surface of the belt body 11 in a state of being disposed.
As shown in FIGS. 4 to 6, a long lug 13 and a short lug 14 that are adjacent to each other in the belt circumferential direction are arranged on the outer peripheral surface of the belt main body 11 located on the left and right outside of the short lug 14. The portion between the long lugs between the outer portion 15 and the long lug portion that opposes it in the belt circumferential direction in a state of being left as a protrusion having the same height as the inter-lug portion 16 located between Concave portions 18 are formed in the left and right inner portions of the left and right end portions 17 between the end portions of the long lugs 13.
The left and right end portions 17 are formed at the same height as the outer portion 15 .
[0013]
Further, the inner peripheral surface caries Chi, the back surface side of a portion the recess 18 is formed on the outer peripheral surface of the belt body 11 is formed so as to rise than other portions of the inner peripheral surface. That is, by forming the bulging portion 19 that bulges on the back surface side, the thinning of the concave portion forming portion accompanying the formation of the concave portion 18 is suppressed or prevented.
That is, the protruding portion 19 includes the recess present point in plan view, and, at a site over a an elongated lug 13 portions against by ridges and it circumferential direction of the belt obtained by leaving between each other the recess 18 The belt body 11 is formed over a wider area than the recess 18 so that the thickness of the belt body 11 where the recess 18 is formed can be prevented from being extremely reduced.
[0014]
[Another embodiment]
In the above embodiment, the outer portion 15 is formed at the same height as the inter-lug portion 16, but the outer portion 15 is formed higher than the inter-lug portion 16 as shown in FIG. Thus, it may be formed low, and the height of the left and right end portions 17 is not the same as that of the outer portion 15 and may be high or low.
[Brief description of the drawings]
1 is a side view of a combine. FIG. 2 is a longitudinal side view of a crawler main part. FIG. 3 is a bottom view of a crawler belt. FIG. 4 is a cross-sectional view taken along line AA in FIG. Cross-sectional view along line B [FIG. 6] Perspective view of crawler belt [FIG. 7] Vertical front view of crawler belt showing another embodiment [FIG. 8] Vertical front view of crawler belt showing another embodiment [Explanation of symbols]
11 Belt body 12 Core 13 Long lug 14 Short lug 15 Part (projection)
16 parts 18 recesses

Claims (1)

In the rubber belt body (11), a plurality of core bars (12) are embedded at a set interval in the belt circumferential direction,
A long lug (13) with a large left-right width and a short lug (14) with a small left-right width are in phase with the core metal (12), and the long lug (13) and the short lug (14) A rubber crawler formed on the outer peripheral surface of the belt body (11) in a state of being alternately arranged in a direction,
Located between the portion (15) located on the left and right outer side than the short lug (14), adjacent to each other in the belts circumferential direction and the long lug (13) and short lugs (14) of said belt body (11) The recess (18) is located in a portion located between the ridge and the long lug (13) that opposes the belt in the circumferential direction in the state of being left as a ridge having the same or substantially the same height as the portion (16) to be Form the
A ridge that bulges on the belt inner peripheral surface opposite to the belt outer peripheral surface on which the concave portion (18) is formed, and is left between the concave portions (18) in a plan view; A rubber crawler formed over a portion of the long lug (13) that opposes it in the belt circumferential direction and including the location of the recess (18) .

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