JPH0524562A - Crawler travel device - Google Patents

Abstract

PURPOSE:To make a crawler surface have sufficient strength against a support wheel of a rolling wheel in a crawler travel device to drive an agricultural combined harvester and thresher, a construction machine on the like. CONSTITUTION:In a crawler travel device provided with driving wheels and driven wheels on the lower side of a car, wherein a large number of rolling wheels 30 are arranged between these driving wheels and driven wheels and a crawler 10 formed endlessly out of an elastic material and provided with a large number of core bars 20 buried therein is wound around the rolling wheels 30, the core bars 20 are buried in a crawler main body 11 so as to be orthogonal in the longitudinal direction of the crawler main body 11 and to be in parallel with each other, and a pair of projected parts 22 projecting inside of the crawler main body 11 are formed of these core bars 20. A pair of overhang reinforcing ribs 23 are formed to extend in the longitudinal direction of the crawler main body 11 and to be exposed inside of the crawler main body 11 on both sides of this pair of the projected parts 22 so that support wheels 31 of the rolling wheels 30 constantly travel on these overhang reinforcing ribs 23 surfaces.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tractor traveling device for traveling an agricultural combine harvester, a harvester, and a construction machine.

[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 chlora surface, the strength of the chlora surface with respect to the supporting wheel is not sufficient, and further, For this reason, the chlora surface may be damaged,
Sometimes it shortened the life of the chlora.

[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
In the traveling device, a cored bar is embedded in the crawler main body so as to be orthogonal to the longitudinal direction of the crawler main body and parallel to each other. Protrusions are formed, and a pair of overhanging reinforcement ribs are formed on both sides of the pair of protrusions so as to extend in the longitudinal direction of the crawler body and be exposed to the inside of the crawler body. The present invention relates to a crawler traveling device characterized in that a wheel supporting wheel is configured to always run.

Preferably, the pair of overhanging reinforcing ribs is a crawler traveling device having a top surface longer than a width of the core body in the longitudinal direction of the crawler body.

[0006]

The supporting ring has a supporting surface on which the supporting wheel is constantly in contact and which is provided with an overhanging reinforcing rib surface facing the supporting roller. Moreover, it is less likely to damage 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.

[0008]

The preferred embodiments of the present invention will be described below. FIG. 1 is a cross-sectional view mainly showing the relationship between a cored bar and a rolling wheel in the crawler traveling device of the present invention. The chlora is continuous in the front-back direction of the paper surface. 2 is a plan view of the cored bar in this example, and FIG. 3 is a side view thereof. The crawler 10 is formed between a crawler body 11 made of rubber elastic material in an endless shape, a cored bar 20 embedded in the body 11, and the adjacent cored bars 20, 20. The driving hole 12 and the lug 13 formed on the lower surface side of the cored bar 20. When a sprocket wheel is used as the drive wheel, the sprocket wheel meshes with the drive hole 12.

The cored bar 20 comprises a cored bar base 21, a pair of protrusions 22 and 22, and overhanging reinforcing ribs 23 and 23. The core metal base 21 is completely embedded in the crawler body 11 so as to be perpendicular to the longitudinal direction of the crawler body 11 and parallel to each other. The protrusion 22 is formed so as to protrude inside the crawler body 11. Further, the overhanging reinforcement ribs 23, 23 are
On both sides, that is, on the upper surface of the cored bar base 21 on both ends of the cored bar base 21 and on the inside of the crawler body 11. Incidentally, reference numeral 24 in the drawing denotes a parallel rib formed parallel to the cored bar base 21.

A rolling wheel 30 provided in a vehicle has supporting wheels 31, 31 provided on both side ends thereof.
1 runs constantly in contact with the overhanging reinforcing ribs 23, 23 of the cored bar 20.

FIG. 4 is a plan view of a particularly preferable cored bar 20 of the cored bar 20. As can be seen from this figure, the overhanging reinforcing ribs 23, 23 are the crowbars of the cored bar 20. The length of the main body 11 exceeds the width of the main body 11 in the longitudinal direction, so that the traveling of the support wheels 31, 31 is stable.

As the cored bar 20, one having the following shape can be used. That is, FIG. 5 and FIG. 6 show a second structure of the core bar used in the crawler device of the present invention.
The overhanging reinforcing ribs 23, 23 of the cored bar are not uniform in thickness, are thick in the width direction of the cored bar in contact with the protrusions 22, 22, and are formed thin from the middle to both ends of the cored bar base 21. As a matter of course, the length may exceed the width in the longitudinal direction of the crawler body 12 as in the previous example.

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 23,
It always runs on 23. 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 present invention, the so-called support wheels provided on both sides of the rolling wheel are configured to always run on the pair of overhanging reinforcing ribs provided on the core metal.
It is possible to prevent the wheel from slipping off and the accident of contact with the crawler frame. Further, the supporting wheel can be stably run, and if the parallel reinforcing 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 sectional view of a crawler showing a preferred embodiment of the present invention.

FIG. 2 is a plan view of a cored bar used in the crawler of 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 ... Crawler 11: Crawler body 12 Drive hole 13 rug 20 ... 21 ... Core metal base 22 ... Projection 23 ... Overhanging reinforcement rib 24 ... Parallel ribs 30 ... Rolling wheels 31 ... Support wheels 32: Central wheel 33 ... Rotating axis

Claims (2)

[Claims] 1. A driving wheel and a driven wheel are provided on a lower side of a vehicle,
A large number of rolling wheels are arranged between the driving wheel and the driven wheel, and a crawler traveling device in which a crawler having endlessly formed from an elastic material and having a large number of cored bars embedded therein is wound,
A cored bar is embedded in the crawler main body so as to be orthogonal to the longitudinal direction of the crawler main body and parallel to each other, and a pair of protrusions protruding from the cored bar to the inside of the crawler main body are formed. , A pair of overhanging reinforcement ribs are formed on both sides of the pair of protrusions so as to extend in the longitudinal direction of the crawler body and to be exposed to the inside of the crawler body. A crawler traveling device characterized in that it is configured to always travel. 2. The crawler traveling device according to claim 1, wherein the pair of overhanging reinforcing ribs have top surfaces that are longer than a width of the cored bar in the longitudinal direction of the crawler body.