JPH11227646A - Rubber crawler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rubber crawler of a new structure, whereby in particular, the traction force is heightened. SOLUTION: A rubber crawler is composed of metal cores (21 -24 ) at certain intervals in an endless rubber member, a steel cord 4 embedded in such a way as enclosing them (21 -24 ), and a rubber lug 3 formed on the peripheral surface as mating with the cores (21 -24 ). A reinforcing member 10 is embedded in the rubber lug 3 on the outside of the steel cord 4 in such a way as mating with the cores (21 -24 ).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel structure of a rubber crawler, and more particularly to a method for increasing traction.

[0002]

2. Description of the Related Art There are various structures in conventional rubber crawlers, but many rubber crawlers used for wet and semi-wet fields are provided with rubber lugs extending linearly in the width direction of the rubber crawlers. . FIG. 9 is a plan view of an outer peripheral surface side of a rubber crawler showing an example thereof. A long rubber lug 32 extending over the entire length in the width direction and a short rubber lug 33 formed in the center are alternately provided on the outer peripheral surface of the rubber crawler 31. The center of the rubber crawler supports the weight of the fuselage and the left and right regions provide traction.

As can be seen from the figure, there is no short rubber lug 33 in the left and right regions, and even if mud adheres to the outer peripheral surface of the rubber crawler, there is a width between the rubber lugs (between the lugs 32, 32), so that the rubber lug has a width. -Mud and the like adhering to the outer peripheral surface of the roller are relatively easy to fall off, so that the rubber crawler exerts a sufficient traction force. However, since the long rubber lug 32 and the short rubber lug 33 exist in the central area, and the gap between the rubber lugs (between the rubber lugs 32 and 33) is narrow, the mud adhering therebetween is hard to fall down and the traction force is not exerted to the left.

[0004] In such a rubber crawler, the traction force can be increased by first increasing the height of the rubber lug, but this time the rubber lug buckles, and as a result, the traction force is reduced. Further, wear of the rubber lug and increase in the chipping of the rubber are caused, and the durability is reduced.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks, and a reinforcing material is buried in a rubber lug to increase the rigidity of the rubber lug. The object of the present invention is to provide a rubber crawler which can increase the height of a rubber lug and has excellent traction.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and the gist of the present invention is to provide a core metal embedded at a constant pitch in the longitudinal direction of an endless rubber elastic body, In a steel cord which surrounds and embeds the core metal and a rubber crawler having a rubber lug formed on an outer peripheral surface corresponding to the core metal, the steel cord is disposed outside the steel cord. A rubber rug in which a reinforcing material is embedded in a rubber lug corresponding to the core metal, preferably comprising a means for engaging the core metal and the reinforcing material with a steel code interposed therebetween. It is of the structure that was done.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a rubber crawler having the above-mentioned structure, in which a reinforcing material is buried in a portion corresponding to a rubber lug with a steel bar being sandwiched between a steel bar and a core. The rigidity of the rubber lug is increased by that amount, and a rubber crawler having a relatively high lug height can be obtained. Preferably, the core bar and the reinforcing member are provided with a meshing means so as to be integrated with a steel cord interposed therebetween, so that the rigidity of the rubber lug can be further increased. Such meshing means is not particularly limited, but for example, it is preferable to provide a hole on one side and a projection inserted into the hole on the other side.

[0008]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to Examples. FIG. 1 is a plan view of an inner peripheral side of a rubber roller of the present invention, FIG. 2 is a plan view of an outer peripheral side of the rubber roller of FIG. 1, and FIG.
FIG. 4 is a cross-sectional view taken along line BB. In the figure, reference numeral 1 denotes a rubber elastic body constituting a rubber crawler, which is continuous endlessly above and below the figure. Reference numeral 2 denotes a metal core, left and right wing portions 2 ₁ , 2 ₁ are embedded in a rubber elastic body 1, and corner portions 2 ₃ , 2 ₄ are sandwiched by a sprocket engaging portion 2 ₂ at a central portion. It is formed and protrudes from the inner peripheral surface of the rubber crawler. The metal core 2 is buried in the rubber elastic body 1 laterally at a constant pitch. Further, a rubber lug 3 is provided in a straight line in the horizontal direction corresponding to the core bar 2.
And the relative core metal 2 steel on the outside of the blade portion 2 ₁ - Turkey - de 4 are embedded in the longitudinal direction of the rubber elastic body.

In the present invention, in order to increase the rigidity of the rubber lug 3, a rubber crawler having a reinforcing material 10 embedded in the rubber lug 3 so as to sandwich a steel cord 4 between the rubber lug 3 and the metal core 2 is provided. It is related to. In the figures, particularly to form a hole 21 _1, 21 ₂ as meshing means 20 at both ends of the wing portions 2 _1, 2 ₁ of the core metal 2, while both ends of the reinforcing member 10 as meshing means 20 projections 22 _1, 22 are _{those 2} is formed, steel in the protrusions 22 _1, 22 ₂ wings 2 ₁ of the core bar 2, 2 ₁ hole 21 ₁ formed in, 21 in ₂ - Turkey -It will be engaged with the fourth pin.

As shown in this figure, the rubber cloth of the present invention
The rubber is such that the reinforcing material 10 is embedded in the rubber lug 3 with respect to the metal core 2, and is preferably further engaged with the metal core 2 so as to increase the rigidity of the rubber lug 3 and sufficiently exert traction. The projection 22 and the hole 21 are formed by the core 2
It is needless to say that they may be provided in reverse for the reinforcing member 10 and the same applies to the following examples.

FIG. 5 shows the core 2 and the reinforcing member 10 in the second example.
FIG. 6 is a perspective view showing only the relationship between the two. The reinforcing member 10 is a flat portion 12 facing the cored bar 2.
And a vertical portion 13 erected on the opposite side for reinforcing the rubber lug 3 in particular. Holes 21 ₁ and 21 ₂ formed in the cored bar ₂ are partially cut away. It is formed by a depression.

FIG. 6 shows a core 2 and a reinforcing member 10 in the third example.
FIG. 6 is a perspective view showing only the relationship between the two. The reinforcing member 10 includes a flat portion 12 facing the cored bar 2.
Is provided with a flange 23 as a meshing means 20 at the center of the core, and has a structure for meshing with a long hole 24 formed in the cored bar 2.

As described above, the meshing means 20 is not limited. One side (the core 2 in the illustrated example) is provided as shown in FIG.
May be provided with a pair of ribs 25 and a flange 26 fitted on the other side.

As a further example, as shown in FIG. 8, a hanging portion 27 is formed on the side of the core 2 from the edge of the reinforcing member 10 so that the edge of the core 2 is interposed between the reinforcing member 10 and the engaging means. The hanging portion 27 can be easily provided by, for example, press working.

[0015]

The present invention relates to a rubber cloth having the above structure.
And the rigidity of the rubber lugs provided on the outer peripheral surface thereof can be increased, so that the traction force can be further increased, and the practical value is extremely large.

[Brief description of the drawings]

FIG. 1 is a plan view of the inner peripheral side of a rubber crawler according to the present invention.

FIG. 2 is a plan view of an outer peripheral side of the rubber crawler of FIG. 1;

FIG. 3 is a cross-sectional view taken along line AA.

FIG. 4 is a cross-sectional view taken along line BB.

FIG. 5 is a perspective view showing a relationship between a core metal and a reinforcing material in a second example.

FIG. 6 is a perspective view showing a relationship between a core metal and a reinforcing material in a third example.

FIG. 7 is a perspective view showing a relationship between a cored bar and a reinforcing member in a fourth example.

FIG. 8 is a perspective view showing a relationship between a cored bar and a reinforcing material in a fifth example.

FIG. 9 is an outer peripheral side plan view of a conventional rubber crawler.

[Explanation of symbols]

1 ‥‥ Gomukuro - rubber elastic body constituting the La 2 ‥‥ core metal wings of 2 ₁ ‥‥ metal core, 2 ₂ ‥‥ central portion of the core metal (the sprocket engaging portion), 2 _3, 2 ₄角 Corner of corner metal, 3 ラ グ Rubber lug, 4 ‥‥ Steel cord, 10 ‥‥ Reinforcing material buried in rubber lug, 12 ‥‥ Flat portion of reinforcing material, 13 ‥‥ Vertical of reinforcing material Part, 20 ° engaging means, 21 ₁ , 21 ₂ hole, 22 ₁ , 22 ₂ projection, 23 flange, 24 hole, 25 rib, 26 flange, 27 ‥‥ The lower part.

Claims (2)

[Claims] 1. A core bar embedded at a constant pitch in the longitudinal direction of an endless rubber elastic body, a steel cord surrounding the core bar, and an outer periphery corresponding to the core bar. A rubber crawler having a rubber lug formed on a surface thereof, wherein the rubber crawler is disposed outside the steel cord, and a reinforcing material is embedded in the rubber lug corresponding to the core metal. 2. The rubber rope according to claim 1, further comprising means for meshing the core metal and the reinforcing member with the steel cord interposed therebetween.
La.