JP2001247061A - Rubber crawler in crawler traveling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form lug bodies formed on the grounding side of a crawler body so as to smoothly bend when bending and rotating by meshing with a sprocket of the crawler body and so as not to break the crawler body by bending while sufficiently gripping earth at grounding time. SOLUTION: The lug bodies molded in outer peripheral surface side both side parts of the crawler body are formed in a low trapezoidal shape in a side view and in a wide block shape so that a lengthwide directional width of it becomes a width striding over almost three sheets of parallely embedded core metal. These block-shaped lug bodies are positioned so that a width directional intermediate part corresponds to the parallel two core metal, the width directional one end side corresponds to the rear half side of the core metal of the next position and the other end side corresponds to the front half side of this side core metal. The parallel lug bodies are formed by being parallelly coordinated so as to be adjacent by holding a prescribed interval in a part corresponding to the core metal on which a width directional end part is hooked by half. A shallow hollowed-out groove is formed in the direction orthogonal to the width direction in a part corresponding to the interval of the parallel core metal in the width directional intermediate part of a top surface being a tread of these lug bodies.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber crawler worn on a crawler traveling device of a crawler traveling vehicle traveling by a crawler such as a construction machine.

[0002] More specifically, the present invention relates to a rubber crawler capable of removing an iron crawler normally worn by a crawler traveling device and replacing it with a crawler traveling device.

[0003]

2. Description of the Related Art A rubber crawler W which can be mounted on a crawler traveling device in a manner compatible with an iron crawler mounted on the crawler traveling device is, for example, as shown in FIG. A metal core A having a strip shape made of a metal material and having the protrusions 1.1 standing on the upper surface side is placed inside a crawler body B made of a rubbery plastic material, as shown in FIG. A number of them are buried side by side at predetermined intervals in the longitudinal direction of the main body B, and the crawler main body B has a portion corresponding to the interval between the embedded cores A.
Fig. 3 shows the sprocket holes 2 that mesh with the sprocket teeth.
The crawler body B is further provided on the outer peripheral surface, which is the grounding side, with a portion corresponding to the top surface of the protrusions 1.1 of each of the cores A embedded in the crawler body B. As shown in FIG. 2, a tread surface 3a having substantially the same area as the top surface of the projection 1
Are arranged at positions corresponding to the respective cores A so as to sandwich the ends of the aforementioned sprocket holes 2. Except for the center of the crawler body B in the width direction. The rubber crawler W has a structure that is formed symmetrically in the width direction on both left and right portions.

[0004] As a modified example of the arrangement pattern of the lug members 3 formed on the outer peripheral surface side of the rubber crawler W on the ground side thereof, as shown in FIG. Sprocket hole 2 formed in the central part in the direction ...
Are arranged on the left and right sides of the crawler body B so as to straddle two of the cores A, A with respect to the cores A to be buried in parallel in the longitudinal direction of the crawler body B. In addition, lugs 3 formed on both left and right sides of the sprocket holes 2 are formed so that one core bar A is shifted in the longitudinal direction of the crawler body B, and are arranged in a staggered manner. There is a pattern of the following.

[0005]

A rubber crawler that can be replaced with an iron crawler in the above-mentioned conventional crawler traveling device is a core metal having a lug formed on the ground surface side of the crawler body embedded therein. In the case where the crawler body has a bent surface, the bent surface is formed between the embedded metal cores or between the lug bodies. Therefore, in the case of the arrangement pattern of the lugs, the bent portions are concentrated because the portions between the metal cores serving as the bent portions and the portions between the lugs are overlapped. Therefore, there is a problem that the breakage of the crawler body is increased.

Further, the lug is formed in a block shape straddling two core bars, and is shifted at a pitch of one core bar on both sides of the crawler body except for a central portion thereof in a staggered manner. In the case of the means arranged on the crawler body, the lug body and the lug body, and the core bar between the lug bodies are aligned on each of the left and right halves sandwiching the widthwise central portion of the crawler body. Although the part will be present, the part where the core metal and the lug body overlap will always be located on the other half of the left and right at the position where the aligned part will be present, Concentration of bending when bending and rotating is avoided, and breakage of the crawler body is reduced. However, there is a problem in that the flexibility is insufficient and the number of derailing increases.

SUMMARY OF THE INVENTION The present invention has been made to solve these problems which have occurred in a conventional rubber crawler, and a lug formed on the ground side of a crawler main body is provided.
While making sure that the soil is sufficiently gripped when touching the ground, it is smoothly bent when engaging with the sprocket of the crawler body and bending and turning, and also does not cause breakage due to bending in the crawler body. The purpose is to provide a new means of shaping.

[0008]

According to the present invention, as a means for achieving the above-mentioned object, a large number of metal cores are provided inside a crawler body which is formed into an endless band with a rubbery plasticizer. At a predetermined interval as a posture orthogonal to the longitudinal direction of the main body and buried in parallel at a predetermined interval, the crawler main body has a portion corresponding to the interval between the core metal and the core metal,
Form a sprocket hole that meshes with the sprocket teeth,
A rubber crawler in a crawler traveling device in which a large number of lugs made of a rubbery plastic material that is continuous with the crawler body and are formed in parallel in the longitudinal direction on both left and right portions on the outer circumferential surface side. The lugs to be molded on both side portions of the side are formed in a wide trapezoidal shape having a trapezoidal shape that is low in side view, and the width in the longitudinal direction thereof is a width spanning approximately three cores buried in parallel. The block-shaped lug body is formed such that an intermediate portion in the width direction corresponds to two cores arranged in parallel, one end in the width direction corresponds to the second half of the next core metal, and the other end corresponds to the front core metal. The lugs are arranged so as to correspond to the first half side of the core bar, and are arranged side by side so as to be adjacent to each other at a predetermined interval at a portion corresponding to the core bar whose end in the width direction is half. To form the lug, and become the tread of this lug A rubber crawler in a crawler traveling device, characterized in that a shallow molding groove is formed along a direction perpendicular to the width direction at a portion corresponding to an interval between cores arranged in parallel at an intermediate portion of the surface in the width direction. Is what you do.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A rubber crawler in a crawler running device according to the present invention comprises a crawler main body formed into an endless band made of a rubbery plastic material, and a metal core formed in a strip shape made of a metal material. A predetermined spacing dimension is placed in parallel with the crawler main body in a posture orthogonal to the longitudinal direction, and the cores are buried side by side. The top of
The fact that the crawler body is formed of a rubber-like plastic material and protrudes toward the inner peripheral surface side to form the top surface of the crawler traveling portion is the same as the conventional one.

In the case of a vertical rib or lug body formed integrally and continuously with the crawler body by a rubbery plastic material forming the crawler body on the outer peripheral surface side of the crawler body on the ground side, It is also the same as the conventional means that the sprocket holes are formed on the left and right sides of the row of sprocket holes formed so as to be parallel to the central part in the longitudinal direction so as to correspond to the cored bar, respectively. The lug body is formed in a wide block shape in which the width of the crawler body in the longitudinal direction is equal to the width of approximately three core bars laid in parallel.

Then, the block-shaped lugs are shifted in the width direction by half of the core metal with respect to the core metal arranged in parallel, and an intermediate portion in the width direction corresponds to the two metal cores. One end in the width direction corresponds to the second half of the next core bar, and the other end in the width direction corresponds to the first half of the front core bar. At the position corresponding to the cored bar with half the sides, the lugs are arranged in parallel with the next block-shaped lug at a slight interval.

The lug body is formed in a trapezoidal shape in a side view in which the width becomes narrower in the protruding direction, and a wide tread surface corresponding to approximately two cores is formed at a protruding end thereof. And, on the wide tread, in the middle part in the width direction, at the part corresponding to the distance between the two cores, approximately half of the protrusion height of this lug body A shallow molding groove is formed in the direction perpendicular to the width direction, and the tread surface is divided into two in the width direction, and each core metal is formed in a portion corresponding to the two core metals described above. Lug pieces having treads having an area substantially corresponding to the flat portion of the lug.

[0013] The block-shaped lug is provided symmetrically left and right on both left and right portions on the outer peripheral surface side of the crawler body, which is the ground contact surface side.

[0014] The rubber crawler in the crawler traveling device according to the present invention configured as described above is characterized in that when the crawler body circulates around the sprocket, the block-shaped lugs arranged in parallel form the lugs and the lugs. The lug is bent at the adjacent portion, and the lug itself is bent by the shallow hollow provided at the intermediate portion in the width direction thereof.

[0015] Since the bending of the lug body adjacent to the lug body is performed at a site corresponding to the core bar, the lug is held in a state of holding the core bar, thereby causing breakage of the crawler body. In addition, the bend of the lug body itself due to the shallow hollow is performed at a portion corresponding to the interval between the cores, so that the main bend of the crawler body is performed at this portion. But
Since the bend in this portion is caused by the shallow hollow provided in the middle part of the block-shaped lug in the width direction, breakage due to the bend can be prevented by the thicker lug itself, and the crawler can be crawled. It effectively responds to breakage of the main body. In addition, the shallow molding groove divides the tread surface of the lug body into two in the circulating direction of the crawler body, so that the soil is better grasped and slip is reduced.

[0016]

Next, an embodiment will be described with reference to the drawings. In the drawings, the same reference numerals are used for constituent members equivalent to those of the conventional means.

FIG. 5 is a plan view of a part of a rubber crawler in a crawler traveling device embodying the present invention, FIG. 6 is a bottom view of the same, and FIG. 7 is a vertical sectional view taken along line AA in FIG.
In these figures, A ... is a cored bar, B is a crawler body formed into an endless band by a rubbery plastic material, 2 ... is a sprocket hole formed at the center of the crawler body B so as to mesh with sprocket teeth. , ... is the crawler body B
The lug body is formed on the left and right sides except for the center where the sprocket holes 2 are formed on the ground side of FIG.

The core metal A is made of a metal material as shown in FIGS.
As shown in FIG. 1, a protruding body 1.1 is formed in a strip shape that is long in the left and right directions in plan view, and protrudes upward at a portion close to the center on the upper surface side of the crawler body B at the center portion. The sprocket holes 2 are arranged in such a manner as to be located on the left and right sides of the sprocket holes 2 to be opened, and are in a normal form standing upright and opposed to each other in a pair.
In the case of the projection 1 located on the right side in front view, as shown in FIG. 12, the top side thereof is extended forward, and in the projection 1 located on the left side, as shown in FIG. As it is, the top side thereof is extended rearward, so that these projections 1 and 1 correspond to FIG.
As shown in FIG.

The cores A are placed inside the crawler body B such that the longitudinal direction thereof is perpendicular to the longitudinal direction of the crawler body B formed of an endless belt made of a rubbery plastic material. Are arranged in parallel in the front-rear direction at predetermined intervals, and are integrally embedded.

At this time, the front and rear surfaces of the center portion of each cored bar A are exposed at the front and rear edges of the sprocket holes 2 formed in the center portion of the crawler body B, and are directly in contact with the sprocket teeth. The protrusions 1 are arranged so as to mesh with each other, and the protrusions 1 protrude from the crawler body B toward the inner peripheral surface thereof to prevent the sprockets and the rolling wheels from coming off.

The lug body 3 mounted on the grounding surface side of the crawler body B has a width in the longitudinal direction (front-rear direction) of the crawler body B in plan view as shown in FIG. It is formed into a wide trapezoidal wide block shape as shown in FIG. 8 in a side view as shown in FIG. It is.

The front and rear wide block-shaped lugs 3 are placed in a relative position in plan view with cores A embedded in parallel in the crawler body B as shown in FIG. The middle part of the lug body 3 in the width direction (front-back direction) is positioned so as to correspond to two core bars A, A of the parallel core bars A... Core metal A
A corresponds to the rear half of the core metal A located immediately in front of A, and the rear edge side of the lug body 3 corresponds to the front half of the core metal A located immediately behind the two core metals A. It is arranged and arranged as follows.

Further, as shown in FIG. 6 described above, the lugs 3 are arranged such that the front end in the width direction is formed from the front half of the core metal A on the rear half as shown in FIG. The relation that the lug body 3 and the lug body 3 are adjacent to the next lug body 3 at a position corresponding to the core bar A so that the next lug body 3 is positioned. It is.

Further, on the tread surface of the lug body 3, two cores A corresponding to the middle part in the width direction thereof are provided.
8 and 9, a shallow groove 4 having a depth of about half the protruding height of the lug body 3 is formed along the left-right direction at a position corresponding to the distance between the lug 3 and the core metal A. Have done
Thereby, two narrow tread surfaces 3a and 3b before and after the width defined by the concave groove 4 are formed on the tread surface.

[0025]

As described above, the rubber crawler in the crawler traveling device according to the present invention has a lug body formed on the grounding surface side thereof at a position corresponding to a core metal embedded in the crawler body. Since the crawler body is adjacent to the lug body, breakage when the crawler body is bent at the interval between the core bars is prevented, and provided on the tread surface of the lug body corresponding to the interval between the core bars. Since the lug body is bent by the shallow groove, the crawler body is smoothly bent without breakage.

[Brief description of the drawings]

FIG. 1 is a perspective view of a core metal of a rubber crawler in a conventional crawler traveling device.

FIG. 2 is a longitudinal sectional side view of a part of the rubber track.

FIG. 3 is a bottom view of a part of the rubber track.

FIG. 4 is a bottom view of a part of an example in which the arrangement pattern of the lugs of the rubber track is different.

FIG. 5 is a plan view of a part of a rubber crawler in the crawler traveling device according to the present invention.

FIG. 6 is a bottom view of a part of the rubber track.

FIG. 7 is a longitudinal sectional view of the rubber crawler.

FIG. 8 is a side view of a part of the rubber track.

FIG. 9 is a vertical sectional side view of a part of the rubber track.

FIG. 10 is a plan view of a core metal of the rubber crawler according to the third embodiment.

FIG. 11 is a front view of the cored bar.

FIG. 12 is a right side view of the core bar.

FIG. 13 is a left side view of the core metal.

[Explanation of symbols]

A: core metal, B: crawler body, W: rubber crawler, 1 ...
Projection, 2 ... Sprocket hole, 3 ... Lug, 3a ・ 3b
... tread surface, 4 ... concave groove.

Claims (1)

[Claims] 1. A crawler body which is embedded in a crawler body which is formed into an endless belt shape with a rubbery plasticizer and is arranged in parallel with a predetermined interval at a predetermined interval in a posture orthogonal to the longitudinal direction of the crawler body. A sprocket hole that meshes with the teeth of the sprocket is formed at a position corresponding to the interval between the cored bars, and rubbery plastics that are integrally continuous with the crawler body are formed at both left and right outer peripheral side portions. In a rubber crawler in a crawler traveling device that forms a large number of lugs made of materials in parallel in the longitudinal direction, lugs formed on both side portions on the outer peripheral surface side of the crawler body are formed in a low trapezoidal shape in a side view. The width in the longitudinal direction is formed in a wide block shape having a width straddling approximately three core bars laid side by side. The lugs are positioned so that one end in the width direction corresponds to the second half of the next core metal, and the other end corresponds to the first half of the front core metal. Are formed side by side so as to be adjacent to each other at a predetermined interval at a portion corresponding to the core bar whose end in the width direction is half, and the width direction of the top surface serving as a tread surface of the lug body is formed. 2. A rubber crawler in a crawler traveling device, wherein shallow molding grooves are formed along a direction orthogonal to the width direction at a portion corresponding to an interval between core metal bars arranged in parallel at a middle portion of the crawler traveling device.