JPH08324467A - Rubber crawler - Google Patents

Abstract

PURPOSE: To smoothly perform traveling of a guide roller by restraining the weight from being increased, and by facilitating discharge of foreign matter even in a type capable of being mounted in stead of a metallic crawler. CONSTITUTION: In a rubber crawler in which many core bars 2 are so buried as to be perpendicular to the longitudinal direction of a crawler main body l formed of rubber and so as to be parallel to each other, and guide protrusions 3 to 6 projecting inner peripheral surface side of the crawler main body l are formed on respective core bars 2, at least more than one pair of guide protrusions 3 to 6 are formed, the pairs of guide protrusions 3, 5 are offset from the other pairs of guide protrusions 4, 6 in the longitudinal direction of the crawler main body l, and the guide protrusions 5, 6 outward in the width direction of the crawler main body 1 are formed lower than the inner guide protrusions 3, 4. The rear ends of the guide protrusions 3, 4 of the front core bar 2 out of mutually adjacent core bars and the front ends of the guide protrusions 5, 6 of the core bars 2 on the rear part are so formed as to be overlapped in the width direction of the crawler main body l.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crawler main body made of rubber, in which a plurality of cores are embedded at right angles to the longitudinal direction of the crawler main body so as to be parallel to each other. The present invention relates to a rubber crawler having a guide protrusion protruding inward from the surface, and particularly to a rubber crawler suitable for mounting on a vehicle of a type that can also mount a metal crawler.

[0002]

2. Description of the Related Art As a vehicle 100 equipped with a metal crawler, a drive wheel body 102 is provided on one end side of a track frame 101 and a tension wheel body 103 is provided on the other end side thereof, as shown in FIG. Further, a guide wheel body 104 for guiding the crawler is provided between both wheel bodies 102 and 103, and the metal crawler 1 is provided over each wheel body 102, 103, 104.
It is known that 05 is wound. The metal crawler 105 connects shoe links 106A continuously provided on the shoe plate 106 with a pin 107, and the pin 107 is engaged with the valley portion of the drive wheel body (sprocket) 102. As a conventional example of the rubber crawler that can be mounted on the vehicle 100 configured as described above,
The ones shown in FIGS. 7 to 9 are known. That is,
On the crawler body 200, the cored bar 2 is arranged at appropriate intervals in the longitudinal direction.
The base of No. 01 is embedded, and a pair of left and right guide projections 202, 203 projecting inward from the inner peripheral surface of the crawler body 200 are formed in each core 201. In addition, a locking portion 204 that meshes with the drive wheel body 102 of the vehicle 100 configured for the metal crawler 105 is provided at each of the facing intervals of the guide protrusions 202 and 203, and is provided on the inner side of the inner peripheral surface of the crawler body 200. Each protruding projection 202, 20
The top portion of 3 protrudes more inward of the crawler body 200 than the engaging portion 204 so as to form a guide surface S for the guide ring body 104 for guiding by contacting the inner peripheral edge of the shoe link 106A. The drive wheel 10 is provided between the locking portions 204.
An engagement hole 205 into which the two teeth fit is formed.

[0003]

Since the guide protrusions 202 ... (Same as 203) in the conventional rubber crawler are arranged at a narrow interval on the same line in the longitudinal direction of the crawler, foreign matter is left between the guide protrusions 202 and 203. When dirt, mud, etc. enter, there is an inconvenience that the exit of foreign matter is only at a right angle to the longitudinal direction of the crawler and the foreign matter is hard to come out. In addition, the guide protrusions 202 and 203 become larger by adopting a type that can be mounted instead of the metal crawler,
As the weight of the rubber crawler increased, it became more difficult for foreign substances to be discharged. Furthermore, the front guide protrusions 202, 203 and the rear guide protrusions 202, 20
Since the crawler can bend without any hindrance with respect to the guide wheel 3, a guide ring 104 is provided at this position.
However, it was difficult to drive smoothly.

Therefore, the present invention provides a rubber crawler, which can be mounted in place of a metal crawler, while suppressing an increase in weight, facilitating the discharge of foreign matters and the like, and smoothly running a guide wheel. The purpose is to

[0005]

In order to achieve the above-mentioned object, the present invention embeds a large number of cored bars at right angles to the longitudinal direction of a crawler main body made of rubber so as to be parallel to each other, and In a rubber crawler in which each gold is formed with a guide protrusion protruding toward the inner peripheral surface side of the crawler body, at least two or more pairs of guide protrusions are formed, and the guide protrusion of one pair and the guide protrusion of the other pair are formed. It is offset with respect to the longitudinal direction of the crawler body, and the guide protrusions on the outer side in the width direction of the crawler body are formed lower than the inner guide protrusions. The core bar is formed so as to overlap the front end of the guide protrusion in the width direction of the crawler body.

[0006]

In the present invention, since at least two pairs of guide protrusions are formed on the right and left sides of the core metal, the guide protrusions are subdivided as compared with the conventional guide protrusions, and the weight of the entire rubber crawler is reduced. Also, when this rubber crawler is run, foreign matter, mud, etc. enter the inner peripheral surface of the crawler body, but the guide projections are displaced to the left and right when viewed from the longitudinal direction of the crawler body, and on the outer side in the width direction of the crawler body. Since the guide protrusions are formed lower than the inner guide protrusions, foreign matters and mud can be discharged in the longitudinal direction and the oblique direction, so that the foreign matters can be discharged smoothly. Further, since the front end and the front end of the guide protrusions adjacent to each other are formed so as to overlap with each other, the running surfaces of the guide wheels can be continuously and smoothly run.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, a large number of metal cores 2 ... Are embedded in parallel with each other at right angles to the longitudinal direction of the crawler main body 1 made of rubber, and the crawler main body 1 is embedded in each of the metal cores 2. Guide projections 3 that protrude inward from the inner peripheral surface of
6 is formed. Further, a protruding locking portion 7 is formed in the center of the core metal 2, and the driving wheel body 102 meshes with the locking portion 7. An engagement hole 8 is provided between the locking portions 7, 7 of each core metal 2.
Is formed. The teeth of the driving wheel body 102 enter into the engagement holes 8. The guide protrusions 3 and 5 formed on one side (upper side in the drawing) of the locking portion 7 are not located on the same line in the longitudinal direction of the crawler body 1, and the formation position thereof is shifted to the left and right when viewed in the longitudinal direction, that is, It is offset. Similarly, the guide protrusions 4, which are formed on the other side of the core metal 2 (downward in the drawing),
Neither 6 is formed on the same line in the longitudinal direction of the crawler body 1.

In the embodiment shown in FIG. 1, the front metal core 2 is used.
The guide projections 5 and 6 and the rear guide projections 3 and 4 partially overlap each other in the width direction of the crawler body 1. With this configuration, the guide ring 104 is continuously brought into contact with the guide protrusions 3 to 6, and thus the guide ring 104 smoothly rotates.

FIG. 2 is a side view of the core metal, in which the heights of the guide protrusions 3, 5 (4, 6) are different and the guide protrusions 3, 4 are formed higher than the guide protrusions 5, 6. During traveling, the traveling surface 104A of the guide wheel body 104 first contacts the guide protrusions 3 and 4, and then the traveling surface 104B contacts the guide protrusions 5 and 6. Even when the rubber crawler configured as described above is run and foreign matter or mud enters the inner surface of the rubber crawler, the foreign matter or mud is discharged in the direction of the arrow shown in FIG.

In the embodiment shown in FIGS. 3 to 5, the core metal 2 is used.
The heights of the guide protrusions 3 and 5 are changed and the heights of the guide protrusions 4 and 6 are also changed. The guide protrusions 4 and 5 are formed higher than the guide protrusions 3 and 6. The front guide protrusions 5 and 6 and the rear guide protrusions 3 and 4 are arranged so as to partially overlap with each other. That is, the preceding core metal 2
The guide protrusion 3 of the rear mandrel 2 partially overlaps with the guide protrusion 5 of the rear mandrel 2, and similarly the guide protrusion 4 of the front mandrel 2 and the guide protrusion 6 of the rear mandrel 2 partially. Since they are overlapped with each other, the lateral movement of the cored bar 2 is restricted, the guide wheel body 104 does not fall, and the derailment is also prevented to enable smooth running.

[0012]

As described above, according to the present invention, since at least two pairs of guide protrusions are formed on the right and left sides of the cored bar, the guide protrusions are subdivided as compared with the conventional guide protrusions, and the weight of the entire rubber crawler is reduced. Decrease. Also, when this rubber crawler is run, foreign matter, mud, etc. enter the inner peripheral surface of the crawler body, but the guide projections are displaced to the left and right when viewed from the longitudinal direction of the crawler body, and on the outer side in the width direction of the crawler body. Since the guide protrusions are formed lower than the inner guide protrusions, foreign matters and mud can be discharged in the longitudinal direction and the oblique direction, so that the foreign matters can be discharged smoothly. Further, since the front end and the front end of the guide protrusions adjacent to each other are formed so as to overlap with each other, the running surfaces of the guide wheels can be continuously and smoothly run.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a diagram illustrating a relationship between a guide ring body and a cored bar in the embodiment of FIG.

FIG. 3 is a plan view of a cored bar showing another embodiment.

FIG. 4 is a right side view of FIG.

FIG. 5 is a front view of FIG. 3 and is a view for explaining a relationship with a guide wheel body.

FIG. 6 is a side view of a vehicle equipped with a metal crawler.

FIG. 7 is a plan view showing a conventional rubber crawler.

FIG. 8 is a side sectional view of FIG. 7 showing a conventional example.

9 is a sectional view taken along line XX of FIG.

[Explanation of symbols]

 1 Crawler body 2 Core metal 3 to 6 Guide protrusion

Claims (1)

[Claims] 1. A guide protrusion formed by embedding a plurality of cored bars made of rubber at right angles to the longitudinal direction of the crawler main body so as to be parallel to each other, and projecting toward the inner peripheral surface side of the crawler main body in each of the cored bars. In the rubber crawler formed with, at least two pairs of guide projections are formed, and the guide projections of one pair and the guide projections of the other pair are offset with respect to the longitudinal direction of the crawler body, and
The guide protrusions on the outer side of the crawler body width direction are formed lower than the inner guide protrusions, and the rear end of the guide protrusion of the front metal core and the front end of the guide protrusion of the rear metal core of the adjacent core metal A rubber crawler characterized by being formed so as to overlap with each other.