JP3199025U - Crawler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent stretch and damage effectively while using elastic material as a main material, and even if moisture penetrates due to partial cracks or other causes, large stretch or tear is effectively Provision of crawlers to be prevented. A main body A1 having an endless strip shape of a horizontally long rectangular cross section having a constant width and thickness, a number of lugs A2 projecting outward at equal intervals in the circumferential direction, and an inner peripheral portion A plurality of guide portions A3 projecting inwardly at equal intervals in the circumferential direction are integrally formed with a rubber material in an endless belt shape to constitute the crawler A. In the main body A1 of the crawler A, a pair of carbon fiber sheets B having the same endless belt shape are embedded, and the carbon fiber sheet B and the rubber material constituting the crawler A are integrated. [Selection] Figure 2

Description

  The present invention relates to a crawler having an endless belt shape that constitutes a traveling unit in a traveling construction machine or agricultural machine or other traveling machine.

  Among construction machines and agricultural machines equipped with crawlers as traveling parts, those that travel relatively often on paved roads, etc., prevent noise, vibration, damage to paved roads, etc. So-called rubber crawlers mainly made of rubber are widely used.

  Such a rubber crawler has a structure in which a steel cord is embedded as a tensile body in order to prevent elongation, but elongation due to long-term continuous use has not necessarily been effectively prevented. However, due to partial cracking of the rubber or some other cause, moisture penetrates and the steel cord rusts and deteriorates, causing elongation exceeding the service limit, and the rubber crawler itself often breaking. doing.

JP 2010-138202 A

  The present invention has been made in view of the above-mentioned problems existing in the prior art, and its purpose is to effectively prevent elongation and damage while using a material having elasticity as a main material. It is an object of the present invention to provide a crawler that can effectively prevent large elongation and tearing even if moisture penetrates due to peeling, partial cracking or any other cause.

  The present invention can be expressed as follows.

(1) A crawler that has an elastic material as its main material and has an endless belt shape,
An endless belt-like carbon fiber sheet is embedded in the elastic material constituting the crawler, and the carbon fiber sheet and the elastic material constituting the crawler are integrated along the circumferential direction of the crawler. A crawler characterized by having a shape.

  An endless belt-like carbon fiber sheet is embedded in the elastic material constituting the crawler, and the carbon fiber sheet and the elastic material constituting the crawler are integrated along the circumferential direction of the crawler. It has a shape.

  Therefore, the strength of the crawler mainly made of a material having elasticity is improved, and the crawler is normally used, that is, the starting wheel, the rotating wheel, the idler wheel, etc. provided so that the rotation shafts are parallel to each other. Elongation and damage are effectively prevented due to continued use in a state where tension is applied while surrounding the wheel group, and it is elastic due to partial cracking of rubber and other causes Even if moisture permeates into the material, the carbon fiber sheet is not deteriorated due to rust, but also deteriorated due to alkali, acid, and the like.

  (2) The crawler according to (1), wherein two or more carbon fiber sheets having an endless belt shape along the circumferential direction of the crawler are embedded in parallel in the width direction of the crawler.

  (3) The crawler according to (1) or (2), wherein a part of the elastic material constituting the crawler forms a large number of lugs at intervals in the circumferential direction on the outer periphery of the crawler.

  (4) The crawler according to (3), wherein at least a portion of the elastic material forming the lug is reinforced by dispersing and containing reinforcing fibers.

  (5) A part of the elastic material constituting the crawler protrudes and forms a large number of guide portions for a moving wheel or a group of wheels such as a moving wheel and a wheel at intervals in the circumferential direction on the inner peripheral portion of the crawler. The crawler according to any one of (1) to (4) above.

  (6) The crawler according to (5), wherein at least a portion of the elastic material forming the guide portion is reinforced by dispersing and containing reinforcing fibers.

  (7) In any one of the above (1) to (4), a plurality of cored bars that project guide portions for a moving wheel or a group of wheels such as a moving wheel and a wheel are embedded in the inner peripheral portion at intervals in the circumferential direction. The crawler described.

  (8) The crawler according to any one of (1) to (7), wherein all of the elastic material is reinforced by dispersing and containing reinforcing fibers.

  The crawler of the present invention has a strength improved by using a material having elasticity as a main material, and is a normal use of the crawler, that is, a starting wheel, a rolling wheel provided so that rotation axes are parallel to each other, Elongated and mounted around a ring group such as idle wheels, it is effectively prevented from being stretched or damaged due to continued use while tension is loaded, and elastic due to partial cracking of rubber or some other cause Even if moisture permeates into the material having the property, the carbon fiber sheet is not deteriorated due to rust, but also deteriorated due to alkali, acid, etc., and this point is also excellent in durability.

It is a principal part center longitudinal cross-sectional view of a crawler. It is the II-II line schematic cross section in FIG. FIG. 3 is a schematic cross-sectional view taken along line III-III in FIG. 1. It is a model side view of a crawler. FIG. 5 is a schematic cross-sectional view taken along line VV in FIG. 1.

  [1] An embodiment of the present invention will be described with reference to the drawings.

  1 to 4 all relate to an example of an embodiment of the crawler of the present invention.

  The crawler A in this example constitutes a traveling unit in a construction machine that can travel (not necessarily limited to a construction machine).

  The crawler A is a crawler having an endless belt shape (a belt-like body forms a ring without twist) whose main material is a rubber material (elastic material), and the carbon fiber is in a circumferential direction and a direction perpendicular thereto. An endless belt-like carbon fiber sheet B arranged in a certain width direction (the belt-like body has a ring shape without twisting. In the drawing, the thickness of the carbon fiber sheet B is exaggerated) constitutes the crawler A. The rubber material constituting the carbon fiber sheet B and the crawler A is integrally formed in the rubber material so that the width direction of the crawler A and the width direction of the carbon fiber sheet B coincide with each other along the circumferential direction of the crawler A. It is what you make.

  The crawler A corresponds to a main body A1 having an endless strip shape with a horizontally long rectangular cross section having a constant width and thickness, a number of lugs A2 projecting from the outer peripheral portion at equal intervals in the circumferential direction, and the lugs A2. A large number of guide portions A3 provided at equal intervals in the circumferential direction on the inner peripheral portion of the circumferential position, and positions between the adjacent lugs A2 in the circumferential direction (and hence between the guide portions A3) at equal intervals in the circumferential direction. A number of provided meshing holes A4 are integrally formed of a rubber material, and a pair of carbon fiber sheets B having the same endless belt shape are embedded in the main body A1 of the crawler A.

  The carbon fiber sheet B forming the pair of endless belts has a width direction of the crawler A and a width direction of the carbon fiber sheet B along the circumferential direction of the crawler A in the rubber material constituting the main body A1 of the crawler A, respectively. It is embedded in parallel with a certain interval in the width direction so as to match, and is integrated with the rubber material. The burying position of the carbon fiber sheet B is constant in any cross section of the crawler A.

  A pair of lugs A2 are provided symmetrically in the width direction with respect to the center in the width direction at each circumferential position, and each lug A2 has a trapezoidal quadrangular pyramid shape in both the cross section and the vertical section. Is protruded outward (upward in FIGS. 1 to 3) at the outer peripheral portion of the main body A1.

  The guide portion A3 has a substantially triangular plate shape in which the cross-sectional shape of the crawler A in the width direction decreases inward (downward in FIGS. 1 to 3). A pair of guide portions A3 facing in the width direction of the crawler A are formed to protrude inward so as to sandwich a portion corresponding to the position of the meshing hole A4 in the width direction.

  The crawler A may be reinforced by dispersing and containing the reinforcing fibers in the entire rubber material.

  The crawler A is mounted with a group of wheels, such as a starter wheel, a rotating wheel, and an idler wheel provided so that the rotation shafts are parallel to each other on the inner peripheral side, and is used in a state where tension is loaded. . When the starter wheel having the meshing protrusion meshed with the meshing hole A4 of the crawler A is rotated, it is guided between the pair of guides A3 so as to circulate around the wheel group such as the starter wheel, the rotating wheel, and the idler wheel. However, the endless belt-like crawler A is driven, and the outer peripheral side of the crawler A including the lug A2 can run on the ground or the like in contact with the irregular ground or other ground.

  FIG. 5 shows a base C1 having a rectangular plate shape and a projecting inward (downward in FIG. 5) symmetrically with respect to the center in the longitudinal direction (width direction of the crawler A) in the inner surface of the base C1. This is a metal core C composed of a pair of guide portions C2. In this example, the guide portion C2 is covered with a rubber material, which is a main material constituting the crawler A, so as to be integrated with the main body portion A1 to form the guide portion A3. The part C2 can also be used as the guide part A3 as it is. FIG. 1 shows a configuration corresponding to FIG. 5 in which only the guide portion A3 at the right end covers the guide portion C2 of the cored bar C with a rubber material. When the core bar C is used, it is normal that all guide portions A3 have the same configuration.

  [2] Embodiments of the present invention will be further described, including forms other than those described above.

The crawler of the present invention is a crawler that has an elastic material as a main material and has an endless belt shape,
An endless belt-like carbon fiber sheet is embedded in the elastic material constituting the crawler, and the carbon fiber sheet and the elastic material constituting the crawler are integrated along the circumferential direction of the crawler. It has a shape.

  (1) The crawler has an endless belt shape that constitutes a traveling part of a traveling construction machine, agricultural machine, or other traveling machine (the belt-like body forms a ring without twisting). The endless belt-shaped crawler has an outer peripheral side and an inner peripheral side, and a driving wheel such as a starter wheel, an idler wheel or the like, or a wheel group such as a moving wheel and a roller wheel provided so that the rotation shafts in the traveling machine are parallel to each other. Is mounted around the inner periphery, and is used in a state where tension is loaded.

  By rotating the starting wheel or the like on the inner peripheral side of the crawler, the endless belt-like crawler is driven so as to circulate around the driving wheel and the moving wheel such as the idle wheel, or the wheel group such as the driving wheel and the rolling wheel, The outer peripheral side of the crawler can run on the irregular ground, the other ground, and the like.

  A meshing mechanism or the like can be provided between the crawler and the starter wheel, the idler wheel, or the like so that the crawler can be circulated and driven by the rotation of the starter wheel. For example, meshing protrusions can be provided at intervals in the circumferential direction of the outer peripheral portion of the starting wheel or idler wheel, and the crawler can be provided with a meshing recess, a meshing hole, and a meshing projection that can mesh these meshing projections.

  (2) The crawler is mainly made of elastic material.

  Elastic materials include natural rubber, synthetic rubbers such as NBR and SBR, elastomers such as thermoplastic elastomers, thermoplastic resins such as ethylene vinyl acetate resin, polyvinyl chloride resin, polyethylene resin, ABS resin, PET, and polyamide. And other synthetic materials, or other elastic materials. The material having elasticity refers to a material having elasticity to such an extent that noise, vibration, damage to a paved road surface, and the like are effectively prevented when the traveling machine is driven by a crawler circulation drive.

  (3) As a carbon fiber sheet having an endless belt shape (a belt-like body made of a carbon fiber sheet forms an untwisted ring shape), it is possible to effectively prevent the crawler from being stretched by the normal use of the crawler. Moreover, what contributes to the improvement of the strength of the crawler can be used. For example, an endless carbon fiber sheet in which carbon fibers are arranged in the circumferential direction or in the width direction which is a direction orthogonal to the circumferential direction can be used.

  (4) The endless belt-shaped carbon fiber sheet is embedded in the elastic material constituting the crawler along the circumferential direction of the crawler and has elasticity that constitutes the carbon fiber sheet and the crawler. The material is in one piece.

  In this case, the width direction of the crawler and the width direction of the carbon fiber sheet can coincide with each other. That is, in each cross section of the crawler that forms an endless belt, the width direction of the cross section of the crawler and the thickness direction orthogonal thereto coincide with the width direction of the cross section of the carbon fiber sheet and the thickness direction orthogonal thereto. In addition, the cross section of the carbon fiber sheet is embedded in a cross section made of an elastic material constituting the crawler, and the elastic material constituting the carbon fiber sheet and the crawler are integrally joined. Can be.

  (5) Two or more carbon fiber sheets having an endless belt shape along the circumferential direction of the crawler may be embedded in parallel in the width direction of the crawler. For example, if lugs made of a material with elasticity are provided at intervals in the circumferential direction at two constant positions (or three or more positions) in the width direction on the outer periphery of the crawler, it corresponds to the position in the width direction of the lugs One carbon fiber sheet having an endless belt shape can be embedded in parallel at each position.

  These endless belt-like carbon fiber sheets may be the same as or different from each other. When carbon fiber sheets having three or more endless belts are embedded in parallel in the width direction of the crawler, the carbon fibers having one or two or more endless belts different from the same plural carbon fiber sheets having endless belts Sheets may be arranged in parallel. For example, a carbon fiber sheet having a different endless belt shape is embedded in parallel between two identical carbon fiber sheets having an endless belt shape.

  (6) A part of the elastic material constituting the crawler forms a large number of lugs at intervals in the circumferential direction on the outer periphery of the crawler, and the outer periphery of the crawler is in contact with irregular ground, other ground, etc. When the traveling machine equipped with the crawler travels on the ground or the like, the driving force can be increased by the lugs.

  Further, at least a portion forming the lug in the elastic material can be reinforced by dispersing and containing reinforcing fibers. Thereby, while improving a driving force with a lug reliably, durability including the abrasion resistance of a lug can be improved.

  In this case, as the reinforcing fiber, a fiber that can be reinforced without impairing the moldability of the elastic material containing the reinforcing fiber dispersedly can be used. The length of the reinforcing fiber is For example, the thickness may be 0.05 to 10 mm, preferably 0.1 to 5 mm. As the reinforcing fiber, various reinforcing fibers such as carbon fiber and glass fiber can be used. Carbon fiber is preferable.

  Such lugs can be provided, for example, at constant intervals in the width direction on the outer peripheral portion of the crawler, or at two or more locations at intervals in the circumferential direction. The shape and arrangement of the lugs are not particularly limited. For example, as the shape of the lug, various shapes can be adopted in addition to the shape of a quadrangular frustum, other polygonal frustums, etc. Various arrangements can be adopted, such as forming a large number at intervals in the circumferential direction.

  (7) The crawler has a part of the elastic material constituting the crawler at a circumferential interval in the inner peripheral portion of the crawler. It is possible to form a large number of guide portions for the projection.

  The guide unit is mounted with an endless belt-like crawler around the inner periphery of a driving wheel such as a starter wheel, idler wheel, or a group of wheels such as a moving wheel and a roller wheel provided so that the rotation shafts are parallel to each other. The endless belt-like crawler is driven so as to circulate around the driving wheel and the driving wheel such as the idler wheel or the group of wheels such as the driving wheel and the rolling wheel by rotating the starting wheel on the inner peripheral side of the crawler. In this case, the crawler is guided so that the position in the width direction of the crawler with respect to the starting wheel and the idler wheel, or the wheel group such as the moving wheel and the rolling wheel is not shifted or detached.

  The guide unit is, for example, a pair of opposed plates or the like that guides with the whole or a part of the width direction (rotation axis direction) in each of the driving wheels such as the starting wheel and the idle wheel or the driving wheel and the rolling wheel inside. Or a plurality of inward protrusions having a shape in the circumferential direction, or in the width direction (rotational axis direction) of each of the driving wheel and the idler wheel, or the driven wheel and the rotating wheel. A large number of plate-like or other shaped inward projections that are fitted and guided in annular grooves formed in one place or a plurality of places may be formed at intervals in the circumferential direction.

  Further, at least a portion of the elastic material forming the guide portion may be reinforced by dispersing and containing reinforcing fibers. As a result, it is possible to more reliably guide the moving wheel or the wheel group such as the moving wheel and the rolling wheel by the guide unit, and to improve the durability of the guide unit.

  In this case, as the reinforcing fiber, a fiber that can be reinforced without impairing the moldability of the elastic material containing the reinforcing fiber dispersedly can be used. The length of the reinforcing fiber is For example, the thickness may be 0.05 to 10 mm, preferably 0.1 to 5 mm. As the reinforcing fiber, various reinforcing fibers such as carbon fiber and glass fiber can be used. Carbon fiber is preferable.

  (8) The crawler may have a large number of cored bars that protrude from the guide part for the driving wheel or the wheel group such as the driving wheel and the rolling wheel at an inner peripheral part at intervals in the circumferential direction. Such a cored bar can be made of metal, ceramics or other rigid material.

  The guide part in the metal core fulfills the guide function with the same structure (excluding the material) as the guide part formed by a part of the elastic material constituting the crawler.

  The cored bar may constitute a crawler-side meshing portion in a meshing mechanism with a moving wheel such as a starting wheel or idler wheel in addition to the guide portion. For example, engagement protrusions are provided at intervals in the circumferential direction of the outer peripheral portion of the starter wheel or idler wheel, and these engagement protrusions are provided on the side ends in the circumferential direction of the cored bar embedded in the crawler and the cored bar. It can be meshed with the meshing recess or the meshing hole.

  The cored bar can have, for example, a rectangular plate-shaped base and a guide portion protruding in one or more locations in the longitudinal direction of one surface of the base, and the longitudinal direction of the base is crawler. It can be embedded in the width direction. The guide portion of the metal core can be used as it is, or can be used in a state where it is covered with the elastic material.

  (9) The crawler may be reinforced by dispersing or containing reinforcing fibers in all or part of the elastic material. For example, in the case where a crawler is provided with a meshing recess, a meshing hole, and a meshing projection that can mesh with the meshing projections of the starting wheel and the idler wheel in the portion made of the elastic material, the elasticity that constitutes the part including them. The material having the property may be reinforced by dispersing and containing reinforcing fibers.

  In this case, as the reinforcing fiber, a fiber that can be reinforced without impairing the moldability of the elastic material containing the reinforcing fiber dispersedly can be used. The length of the reinforcing fiber is For example, the thickness may be 0.05 to 10 mm, preferably 0.1 to 5 mm. As the reinforcing fiber, various reinforcing fibers such as carbon fiber and glass fiber can be used. Carbon fiber is preferable.

A crawler A1 body A2 lug A3 guide A4 engagement hole B carbon fiber sheet C cored bar C1 base C2 guide

Claims (8)

A crawler that is made of an elastic material and has an endless belt shape,
An endless belt-like carbon fiber sheet is embedded in the elastic material constituting the crawler, and the carbon fiber sheet and the elastic material constituting the crawler are integrated along the circumferential direction of the crawler. A crawler characterized by having a shape.   The crawler according to claim 1, wherein two or more carbon fiber sheets having an endless belt shape along the circumferential direction of the crawler are embedded in parallel in the width direction of the crawler.   3. The crawler according to claim 1, wherein a part of the elastic material constituting the crawler forms a large number of lugs at intervals in a circumferential direction on an outer peripheral portion of the crawler.   The crawler according to claim 3, wherein at least a portion of the elastic material forming the lug is reinforced by dispersing and containing reinforcing fibers.   A part of the elastic material constituting the crawler projects a large number of guide portions for a driving wheel or a group of wheels such as a driving wheel and a wheel at intervals in the circumferential direction on the inner peripheral portion of the crawler. 5. The crawler according to any one of 1 to 4.   The crawler according to claim 5, wherein at least a portion forming the guide portion of the elastic material is reinforced by dispersing and containing reinforcing fibers.   The crawler according to any one of claims 1 to 4, wherein a number of cored bars that project guide portions for a moving wheel or a group of wheels such as a moving wheel and a wheel are embedded in the inner peripheral portion at intervals in the circumferential direction.   The crawler according to any one of claims 1 to 7, wherein all of the elastic material is reinforced by dispersing and containing reinforcing fibers.

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