JPH0516844A - Core bar for crawler - Google Patents

Abstract

PURPOSE:To prevent a crawler surface from being damaged in sufficing the extent of strength on the crawler surface against a support wheel as well as to prolong its service life, in a core bar avialable for a crawler travel gear. CONSTITUTION:This core bar 10 consists of a core bar base 11 being embedded in an elastic material and a pair of projections 12 extending from this core bar base and projecting to the inner part of a crawler body 20, and it is featured that an overhang stiffening rib 14 extending in the longitudinal direction of the crawler body is formed at the outside of these paired projections with a step part on the core bar base, an overhang stiffening rib top face is exposed on the inner part of the crawler body, while a support wheel 31 in rolling wheels is always made travelable. In this case, the core bar base is completely embedded in the elastic material, while the so-called support wheels installed at both sides of the rolling wheel are always made travelable on these paired overhang stiffening ribs exposed on the inner surface of a crawler, so that any dewheeling of the rolling wheel and a contact accident with a frame of the crawler can be kept back and, what is more, a fall-off of the core bar from the elastic body is preventable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a core bar used in an agricultural combine harvester, a harvester, and a crawler traveling device for traveling a construction machine or the like.

[0002]

2. Description of the Related Art A conventional crawler traveling device is generally one in which a large number of rolling wheels are arranged between a driving wheel and a driven wheel, and the crawlers are wound around these wheels so that the vehicle rides on top of them. Is. A large number of cored bars are embedded in the crawler at right angles to the longitudinal direction, and driving holes are formed between the cored bars. Then, a sprocket wheel is used as a drive wheel, and the sprocket wheel sequentially meshes with the drive hole and kicks the core bar to drive the vehicle. In particular, a pair of protrusions are formed on the core metal, and there are an inner wheel type in which a roller wheel runs between these protrusions and an outer wheel type in which a roller surface runs across the pair of protrusions.
In both cases, engagement with the projections is used to prevent the wheel from slipping off.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In this conventional crawler traveling device, when the supporting wheel of the rolling wheel comes into contact with the elastic material of the crawler surface, the strength of the crower surface against the supporting wheel is not sufficient. In addition, the surface of the chlora may be damaged and the life of the chlora may be shortened.

[0004]

In order to achieve the above-mentioned object, the present invention adopts the following constitution to solve such a drawback. That is, the gist of the present invention is to provide a driving wheel and a driven wheel on the lower side of a vehicle, and arrange a large number of rolling wheels between the driving wheel and the driven wheel, which are endlessly formed of an elastic material. Crawler wrapped with a crawler with many cores embedded in it
A cored bar used in a traveling device, comprising a cored bar base embedded in an elastic material, and a pair of protrusions extending from the cored bar and protruding inside the chlora body, An overhanging reinforcing rib extending in the longitudinal direction of the crawler body is formed on the outside of the pair of protrusions with a step on the core metal base, and the top surface of the overhanging reinforcing rib is exposed to the inside of the chromel body and is rolled. The present invention relates to a core bar for a crawler, which is characterized in that a supporting wheel of the wheels can always run.

Preferably, the pair of overhanging reinforcing ribs provide a core bar for a crawler having a top surface longer than the width in the longitudinal direction of the crawler body of the core bar.

[0006]

The core metal is formed on the inner surface of the crawler having a structure such that the supporting ring is always in contact with the supporting ring so as to expose the reinforcing rib surface facing the supporting ring. In the chlora embedded and used in the elastic material,
It has a supporting strength against the supporting ring and less damage to the chrome surface.

Particularly, when the overhanging reinforcing rib surface has a top surface which is longer than the width of the cored bar in the longitudinal direction of the crawler body, a particularly excellent operation is achieved.

In the cored bar, the overhanging reinforcing rib is separated from the cored bar base by a step,
The core metal base will be completely embedded in the elastic material,
It is possible to sufficiently resist external force during traveling, and it will not fall out of the elastic material.

[0009]

The preferred embodiments of the present invention will be described below. FIG. 1 is a front view of a core bar for a crawler of the present invention, FIG. 2 is a plan view of the core bar of FIG. 1, and FIG. 3 is a side view of the core bar.
Now, the cored bar 10 is composed of a cored bar base 11, a pair of protrusions 12 and 12, and projecting reinforcing ribs 14 and 14 which are partitioned by a step 13. The core metal base 11 is completely embedded in the crawler body 20 so as to be perpendicular to the longitudinal direction of the crower body 20 shown by the dotted line and parallel to each other. . or,
The protrusions 12 and 12 are formed to protrude inside the crawler body 20. Further, the overhanging reinforcing ribs 14, 14 are provided on both sides of the protruding portion 12, that is, on both sides of the cored bar base 11, on the cored bar base 2.
1 has a step portion 13 on the upper surface thereof, and only the overhanging reinforcing ribs 14, 14 are formed so as to be exposed to the inside of the chlora body 11. In the figure, reference numeral 15 is a parallel rib formed in parallel with the core metal base 11.

The rolling wheel 30 provided in the vehicle has supporting wheels 31, 31 provided on both side ends thereof, and the supporting wheels 31, 31 are reinforced by overhanging the core metal 10 when traveling on the inner surface of the crawler. The ribs 14 and 14 always contact each other and travel.

FIG. 4 is a plan view of the core metal 10 which is particularly preferable in the core metal 10. As can be seen from this figure, the overhanging reinforcing ribs 14 and 14 are the crow bars in the core metal 10. The length of the main body 20 exceeds the width of the main body 20 in the longitudinal direction, so that the traveling of the support wheels 31, 31 is stable.

FIGS. 5 and 6 are a front view and a side view showing a second example of the core bar for a crawler of the present invention. In the figure, overhanging reinforcing ribs 14, 14 are formed so as to be continuous with the protrusions 12, 12 of the cored bar, and are separated from the cored bar base by a step 13. Of course, as in the previous example, the chlora body 12
It may have a length exceeding the width in the longitudinal direction of.

A large number of rolling wheels 30 are arranged between the driving wheels and the driven wheels, and for example, those having a structure as shown in FIG. 7 can be used. That is, in this example, the central wheel 32 and the support wheels 31, 31 are integrated by the rotating shaft 33 so that they rotate simultaneously. The feature of the present invention is that the supporting rings 31, 31 are extended and the reinforcing ribs 14,
It is possible to run on 14 at all times. Therefore, the central wheel 32 here does not necessarily have to be as tall as the support wheel 31, and may be a conventional so-called outer wheel type wheel in some cases.

[0014]

As described above, according to the core metal of the present invention, the core metal base is completely embedded in the elastic material, and
The so-called support wheels provided on both sides of the rolling wheels on a pair of overhanging reinforcing ribs exposed on the inner surface of the crawlers are always capable of running. It is possible to prevent contact accidents with the core metal and to prevent the cored bar from falling out of the elastic body. Further, the supporting wheel can be stably run, and if parallel ribs are provided, the thickness and length of the core metal base can be thinned as a whole, and the weight of the crawler main body can be reduced.

[Brief description of drawings]

FIG. 1 is a front view of a cored bar showing a preferred embodiment of the present invention.

FIG. 2 is a plan view of the cored bar in FIG.

FIG. 3 is a side view of the cored bar.

FIG. 4 is a plan view showing a modification of the cored bar shown in FIGS.

FIG. 5 is a front view showing still another example of the cored bar.

FIG. 6 is a side view of the cored bar of FIG.

FIG. 7 is a cross-sectional view of a rolling wheel used in the crawler of the present invention.

[Explanation of symbols]

10 ... core metal 11 ... Core metal base 12 ... Projection 13 Steps 14 ... Overhanging reinforcement rib 15 Parallel ribs 20 Crawler body 30 ... Rolling wheels 31 ... Support wheels 32: Central wheel 33 ... Rotating axis

Claims (2)

[Claims] 1. A cored bar comprising a cored bar base embedded in an elastic material and a pair of protrusions extending from the cored bar to project inward of the crawler main body. -The overhanging reinforcing rib extending in the longitudinal direction of the roller body is formed with a step on the core metal base, and the top surface of the overhanging reinforcing rib is exposed inside the roller body, and the supporting wheels of the rolling wheels can always run. A core bar for chlora characterized by 2. The core bar for a crawler according to claim 1, wherein the pair of overhanging reinforcing ribs have a top surface that is longer than the width of the core bar in the longitudinal direction of the crawler body.