JPH0681881U - Elastic crawler - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the corrugation phenomenon of the tensile body embedded right under the cored bar. [Structure] An endless band-shaped crawler main body 2 made of an elastic material in which a core bar 3 is embedded at intervals in the circumferential direction and having cords arranged in the band width direction on the ground side of the core bar 3 In the elastic crawler in which the tensile body 4 of is embedded in the left and right,
A tape-shaped reinforcing member 7 is attached to each one side of the left and right tensile members 4 over the entire length in the circumferential direction, and the tensile member 4 and the reinforcing member 7 are wrapped in a bag-shaped canvas 8. Are integrated in.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an endless belt-shaped elastic crawler mainly made of an elastic material such as rubber, which is used in agricultural machines, various vehicles, snow vehicles, and the like.

[0002]

[Prior art]

 In an elastic crawler in which an endless tension member having cords arranged in the band width direction is embedded in an endless crawler body made of an elastic material, the tension member can be Rubber flow When the embedding position is disturbed due to the flow mainly in the width direction and it is not possible to orderly embed it in the specified position, and when the tensile body is embedded in the crawler body in the full width. The tensile body may be meandered or exposed to the outside due to the flow of the tensile body, and even tension is not applied even when the completed elastic crawler is wound around the drive wheel and rotated. There is a problem such as the occurrence of a disconnection accident due to the exposure of the tensile body, and therefore, there is a known technique in which the tensile body is wrapped in a bag-shaped cloth layer or vias (hereinafter referred to as a bag-shaped canvas). (Japanese Utility Model Publication No. 43-11931, JP-A-55-8) See 699).

[0003]

[Problems to be solved by the device]

 In the above-mentioned conventional technology, since only the tensile body is wrapped in the bag-shaped canvas, the alignment of the tensile body is disturbed or the tensile body is wavy in the longitudinal direction of the belt. In particular, if the tensile body is embedded in the crawler body in a wavy state, there is a risk of causing problems such as cutting due to contact with the core metal and rubber cracks around the tensile body.

Therefore, an object of the present invention is to provide an excellent elastic crawler which secures the alignment of the tensile body.

[0005]

According to the present invention, an endless belt-shaped crawler body 2 made of an elastic material in which a core metal 3 is embedded at a circumferential interval is provided on a ground side of the core metal 3. In an elastic crawler in which endless belt-shaped tensile members 4 having cords arranged in the width direction are embedded on the left and right, the following technical measures are taken to achieve the above-mentioned object.

That is, according to the first aspect of the present invention, a tape-shaped reinforcing member 7 is attached to one side of each of the left and right tensile members 4 along the entire length in the circumferential direction, and An elastic crawler in which the reinforcing body 7 and the reinforcing body 7 are wrapped and integrated with a canvas 8 formed in a bag shape.

The present invention according to claim 2 is characterized in that the canvas 8 enclosing the tensile body 4 and the reinforcing body 7 is endless. The present invention according to claim 3 is characterized in that the canvas 8 encloses the tensile body 4 and the reinforcing body 7 with a circumferential interval.

[0008]

[Action]

 According to the present invention, the reinforcing body 7 is attached to one surface of the tensile body 4, and the both 4, 7 are wrapped in the bag-shaped canvas 8. Therefore, the tensile body 4 is maintained in the aligned state. There is no wavy phenomenon.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1 showing the first embodiment, an elastic crawler 1 is mainly composed of an endless belt-shaped crawler body 2 made of an elastic material such as rubber, A large number of cored bars 3 embedded in the crawler body 2 at predetermined intervals in the circumferential direction, and a tensile body 4 composed of an endless steel cord or the like embedded in the grounded side of the cored bar 3 in the circumferential direction. It consists of

On the ground side, lugs 5 are arranged in a staggered manner on the crawler body 2 in a zigzag pattern in correspondence with the core metal 2, and a driving wheel (sprocket-shaped) engagement hole is formed in the widthwise center between the core metals 3. Are drilled at equal intervals. The core metal 3 is provided with drive wheel guide lugs 6 projecting to the anti-ground side on both sides of the engagement hole in the width direction, and the driving force of the drive wheels is transmitted through the core metal 3 to the crawler body 2. Is being taught to.

The tensile body 4 is formed by arranging steel cords in a row in the band width direction and is embedded in both wing portions of the cored bar 3 in a left-right distribution manner. A tape-shaped reinforcing body 7 is attached endlessly over the entire length on the grounding surface side (core bar side), and the tensile body 4 and the reinforcing body 7 are wrapped in a bag-shaped canvas 8. It is integrated. The canvas 8 is made of organic fibers such as polyamide type, polyester type rayon, vinylon, and aramid fiber.

According to the first embodiment described above, the disturbance of the tensile body 4 due to the rubber flow at the time of crawler molding is suppressed by the reinforcing body 7 and the canvas 8, and the alignability of the tensile body 4 is secured. At the same time, the wavy current state of the tensile body 4 is prevented by the addition of the reinforcing body 7. FIG. 2 shows a second embodiment of the present invention, in which the reinforcing body 7 is attached to the ground contact side, and the bag-shaped canvas 8 is pushed on both wing portions of the cored bar 3 and is protected. This is different from the first embodiment in that the upholstery body 4 is buried further outward in the width direction than the wing portion of the cored bar 3, and the other parts are common, and therefore common parts are designated by common symbols.

The second embodiment is more advantageous than the first embodiment in that the wing portion of the crawler body 2 can be reinforced by the tensile body 4, and the other features are common to the first embodiment. FIG. 3 shows a third embodiment of the present invention, in which the left and right wings of the cored bar 3 are eliminated and a base portion 3A is formed in the central portion. Others are common to those of the first embodiment, and therefore common parts have common reference numerals. It shows with.

The third embodiment is common to the first embodiment except that it can be made slightly lighter than the crawler of the first embodiment. In the above-described first to third embodiments, the bag-shaped canvas 8 can be formed as an endless shape by enclosing the canvas 8 around the entire circumferences of the tensile body 4 and the reinforcing body 7 or the elastic body 4. The reinforcing body 7 and the reinforcing body 7 can be wrapped at predetermined intervals in the circumferential direction, and when partially wrapped, it is advantageous to wrap directly under the core metal 3. The reinforcing body 7 can be made of the same material as the canvas 8.

[0015]

[Effect of device]

 As described in detail above, according to the present invention, since the tensile body embedded directly under the core metal is wrapped with the bag-shaped canvas with the reinforcing body attached, the alignment is not disturbed, and the wavy phenomenon is not generated. It does not occur and can be made highly durable.

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is a sectional view showing a second embodiment of the present invention.

FIG. 3 is a sectional view showing a third embodiment of the present invention.

[Explanation of symbols]

 2 Crawler 3 Core bar 4 Tensile body 7 Reinforcement body 8 Canvas

Claims (3)

[Scope of utility model registration request] 1. An endless belt-shaped crawler body (2) made of an elastic material having a circumferential gap and having a cored bar (3) embedded therein, on the ground side of the cored bar (3) in the band width direction. In an elastic crawler in which endless belt-like tensile bodies (4) having cords arranged in a row are embedded in the left and right sides, a tape-shaped reinforcing body (7) is provided on each one surface side of the left and right tensile bodies (4). An elastic crawler, which is provided along the entire length in the circumferential direction, and in which the tensile body (4) and the reinforcing body (7) are wrapped and integrated with a bag-shaped canvas (8). 2. Elastic crawler according to claim 1, characterized in that the canvas (8) enclosing the tensile body (4) and the reinforcement body (7) is endless. 3. The elastic crawler according to claim 1, wherein the canvas (8) encloses the tensile body (4) and the reinforcing body (7) at a circumferential interval.