WO2019123872A1 - Wheel and rubber crawler using said wheel - Google Patents

Wheel and rubber crawler using said wheel Download PDF

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Publication number
WO2019123872A1
WO2019123872A1 PCT/JP2018/041376 JP2018041376W WO2019123872A1 WO 2019123872 A1 WO2019123872 A1 WO 2019123872A1 JP 2018041376 W JP2018041376 W JP 2018041376W WO 2019123872 A1 WO2019123872 A1 WO 2019123872A1
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WO
WIPO (PCT)
Prior art keywords
wheel
crawler
pair
rubber crawler
contact
Prior art date
Application number
PCT/JP2018/041376
Other languages
French (fr)
Japanese (ja)
Inventor
穣 我孫子
Original Assignee
株式会社ブリヂストン
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Filing date
Publication date
Application filed by 株式会社ブリヂストン filed Critical 株式会社ブリヂストン
Publication of WO2019123872A1 publication Critical patent/WO2019123872A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/08—Endless track units; Parts thereof
    • B62D55/18—Tracks
    • B62D55/24—Tracks of continuously flexible type, e.g. rubber belts
    • B62D55/253—Tracks of continuously flexible type, e.g. rubber belts having elements interconnected by one or more cables or like elements

Definitions

  • the present invention comprises a wheel and a rubber crawler using the wheel, particularly a wheel rotating in contact with the inner peripheral surface of the crawler body, and a wheel passage surface formed on the inner peripheral surface of the crawler body with which the wheel contacts. It has a rubber crawler.
  • the rubber crawler is an endless track made of rubber, and is now widely used and expanded for various applications, and its configuration and type are diverse. Rubber crawlers can be roughly classified into those having a core metal and those not having a core metal in terms of construction.
  • various wheels are provided inside the endless belt-like crawler body in the traveling body of the rubber crawler, regardless of the presence or absence of the core metal.
  • a sprocket drive wheel
  • an idler which is the opposite wheel of the sprocket
  • a roller for smooth rotation of the crawler body on the contact surface side of the traveling machine body.
  • Multiple rings are provided.
  • a pair of guide projections for guiding the rolling wheels are provided at the central portion in the width direction of the crawler main body so as to protrude on the inner peripheral surface side of the crawler main body.
  • the rolling wheel is configured to rotate across the guide projection.
  • a roller passing surface in contact with the rolling wheels has a predetermined width on both sides in the width direction of the crawler main body of the pair of guide projections and is continuous in the circumferential direction It is provided.
  • the sprocket (driving wheel) is formed of one rotating body having a thickness accommodated between the pair of guide projections, and a tooth portion is formed on the outer peripheral portion of the rotating body.
  • the tooth portion is configured to be fitted to a groove formed between the core metal and the core metal on the inner peripheral surface side of the crawler main body, and to transmit the rotational force to the crawler main body.
  • the idler is constituted by one rotating body having a thickness similarly accommodated between the pair of guide projections, no tooth portion is formed on the outer peripheral surface of the rotating body.
  • FIG. 5 shows an example of the portion of a rubber crawler wedge-shaped sprocket which does not have a core metal.
  • the rubber crawler 40 has a drive projection 44 formed at the center in the width direction of the crawler body 42.
  • two flanges 46-1 and 46-2 are disposed opposite to each other with the drive projection 44 in between, and the vicinity of the outer edge portion of the two flanges 46-1 and 46-2 is It has a configuration (double flange type) connected by a plurality of round bars 48.
  • the round bar 48 is in contact with the driving projection 44 and is configured to transmit the rotational force to the crawler body 42.
  • the idler also has a configuration in which the two flanges are disposed opposite to each other with the drive projection interposed therebetween, and rotates in contact with the inner circumferential surface of the crawler main body 42 .
  • a plurality of rolling wheels of rubber crawlers not having a core metal are provided on the ground contact surface side of the traveling machine body, and in this case, provided at the central portion on the inner peripheral surface side of the crawler body. It is rotated across the drive projection 44.
  • the inner circumferential surface of the crawler main body 42 is provided with a roller passing surface which makes contact with and passes through the rollers, on both outer sides in the width direction of the crawler main body 42 of the driving projection 44.
  • the rubber crawler without the cored bar is prevented from coming off due to the engagement between the rolling ring and the driving projection due to the engagement between the rolling ring and the guide projection.
  • Derailing means that when the rubber crawler travels on a slope or travels on a slope, a large lateral force is applied to the crawler body, and if traveling is continued in that state, the rotating wheel and the guide projection or the rotating wheel and the drive are driven. This means that the engagement with the projection is disengaged, and the crawler main body is laterally offset so as to completely disengage from the rolling wheels so that traveling is impossible.
  • FIG. 6 shows the method of preventing wheel removal disclosed in Patent Document 1.
  • the rubber crawler 60 has a core metal 64 on the crawler body 62 and a tensile body 68 formed by enclosing the core metal 64.
  • a collar 68-1 protruding from the outer peripheral edge of the rotating wheel 68 is formed on the rotating wheel 68 rotating across the pair of guide projections 64-1 (one is not shown).
  • a groove 66-1 continuous in the circumferential direction is formed corresponding to the flange 68-1.
  • the rubber crawler 60 turns and the like in the lateral direction of the crawler main body 62 according to the method of preventing wheel removal by the flange portion 68-1 of the rotary wheel 68 and the groove 66-1 of the rotary wheel passing surface 66 disclosed in Patent Document 1
  • the flange portion 68-1 of the rolling wheel 68 and the groove 66-1 formed in the rolling wheel passing surface 66 are fitted to receive the lateral force, and the guide projection 64-1 and the rolling wheel The engagement with 68 is maintained to prevent the wheels from being released.
  • the present invention has been made in view of the above problems, and an object thereof is to provide a wheel capable of accurately preventing the wheel of the rubber crawler from being released from the crawler main body, and a rubber crawler using the wheel. It is to do.
  • the wheel according to claim 1 is In a wheel rotating in contact with a wheel passage surface formed on an inner circumferential surface of an endless belt-like crawler body,
  • the rotary shaft has a pair of contact surfaces spaced in the axial direction, and the pair of contact surfaces are, in the axial cross section, an inner edge facing each other and an outer edge not facing the other, It is characterized in that it is formed as an inclined surface different in distance from the rotation axis.
  • the pair of contact surfaces provided on the wheel is an inclined surface in which the inner edge facing each other and the outer edge not facing each other are different in distance from the rotation axis in the axial cross section. It is formed. Therefore, when the wheel contacts the wheel passage surface, the load on the entire contact surface, that is, the pressing force on the inner circumferential surface of the crawler body is not uniform. That is, a stronger pressing force is generated on the side of the edge of each contact surface that is formed at a more acute angle.
  • the rubber crawler performs a pivoting motion etc., and a lateral shift force is generated in the crawler body, and when a force in the direction in which the crawler body and the wheel are disengaged is applied, the acute angle of each contact surface The edge on the side of the wheel generates a large frictional force against the wheel passage surface.
  • the lateral displacement force is received, and lateral displacement of the crawler body and the wheel is prevented.
  • a configuration is provided to receive the lateral displacement force of the crawler body, so that engagement between the crawler body and the wheel can be maintained and wheel removal can be effectively prevented. It is.
  • the wheel according to claim 2 is the wheel according to claim 1
  • the edge where the angle between the contact surface and the side surface of the wheel is an acute angle is characterized by a rounded shape.
  • the edge that forms an acute angle with respect to the plane perpendicular to the rotation axis of each contact surface has a rounded shape, so the crawler main body has an acute edge that contacts the wheel passage surface. Damage to the inner circumferential surface of the wheel can be avoided, and the wheel passage surface can be appropriately protected. Therefore, it is possible to use the rubber crawler for a long time while preventing derailing.
  • the rubber crawler according to claim 3 is A rubber crawler provided with an endless belt-like crawler body and the wheel according to claim 1 or 2
  • the axial cross section of the pair of contact surfaces of the wheel may be formed as an inclined surface which is not parallel to the wheel passage surface.
  • the pair of contact surfaces provided on the wheel is not parallel to the wheel passage surface in an axial cross-sectional view, so the load on the entire contact surface, that is, the pressing force on the inner circumferential surface of the crawler body is It is not uniform. That is, a stronger pressing force is generated on the side of the edge of each contact surface that is formed at a more acute angle.
  • the rubber crawler performs a pivoting motion etc., and a lateral shift force is generated in the crawler body, and when a force in the direction in which the crawler body and the wheel are disengaged is applied, the acute angle of each contact surface
  • the edge on the side of the wheel generates a large frictional force against the wheel passage surface.
  • the lateral displacement force is received, and lateral displacement of the crawler body and the wheel is prevented.
  • a configuration is provided to receive the lateral displacement force of the crawler body, so that engagement between the crawler body and the wheel can be maintained and wheel removal can be effectively prevented. It is.
  • the rubber crawler according to claim 4 is the rubber crawler according to claim 3.
  • the axial cross section of the pair of contact surfaces is characterized in that it is a surface inclined in a direction away from the rotation axis from the edge on the opposite side to the edge on the non-facing side.
  • the pair of contact surfaces when the pair of contact surfaces are in contact with the inner peripheral surface of the crawler body, the pair of contact surfaces face each other in a V-shape, and exert a pressing force in the direction sandwiching the inner peripheral surface of the crawler body.
  • the pair of contact surfaces face each other in a V-shape, and exert a pressing force in the direction sandwiching the inner peripheral surface of the crawler body.
  • the rubber crawler according to claim 5 is A rubber crawler provided with an endless belt-like crawler body and the wheel according to claim 1 or 2
  • the wheel passage surface is formed substantially parallel to the contact surface in a widthwise cross section of the crawler body.
  • the pair of inclined contact surfaces of the wheel rotates in surface contact with the inclined wheel passage surface in the same inclined surface. Therefore, when a force is applied to shift the crawler body in the lateral direction, the lateral force can be received and absorbed in the surface contact state of the mutually inclined surfaces, that is, the entire surface. Therefore, lateral displacement of the crawler body as in the prior art can be properly suppressed, and wheel removal can be prevented more effectively.
  • the rubber crawler according to claim 6 is the rubber crawler according to any one of claims 3 to 5,
  • a core metal is embedded in the crawler main body at a predetermined interval in the circumferential direction and extends in the width direction of the crawler main body, and the outside of the core metal facing the contact surface of the wheel is embedded.
  • the widthwise cross section of the surface is characterized in that it is formed to be substantially parallel to the inclination of the contact surface.
  • the cross sections in the width direction of the pair of contact surfaces of the wheel and the outer surface of the core are substantially parallel to the inclination of the contact surface.
  • the load applied to the traveling vehicle becomes even, and the force received from the wheels does not concentrate, so it is possible to reduce the occurrence of cracks in the wheel passage surface.
  • good travel of the rubber crawler can be realized while preventing wheel removal.
  • the rubber crawler according to claim 7 is the rubber crawler according to any one of claims 1 to 6.
  • a member constituting the wheel passage surface of the crawler main body is characterized by being made of a high hardness rubber member.
  • a pair of contact surfaces of the wheels are inclined not parallel to the wheel passage surface in an axial sectional view
  • a greater frictional force is applied at the edge contacting the wheel passage surface of each contact surface to receive this lateral force.
  • the engagement between the wheel and the crawler body can be maintained to prevent the wheel from derailing.
  • the 1st embodiment of the rubber crawler of the present invention is shown, and an explanatory view about rolling wheels is shown.
  • the 2nd Embodiment of the rubber crawler of this invention is shown, and the cross-sectional view about the part of the rolling wheel of a rubber crawler which has a metal core is shown.
  • the 3rd embodiment of the rubber crawler of this invention is related, and the cross-sectional view about the part of the sprocket of the rubber crawler which does not have a core metal is shown.
  • the 4th Embodiment of the rubber crawler of this invention is shown, and the cross-sectional view about the part of the sprocket of the rubber crawler which does not have a core metal is shown. It is explanatory drawing of the part of the sprocket of the rubber crawler which does not have the conventional core metal. It is explanatory drawing about the derailment prevention method of patent document 1. FIG.
  • wheel is used to encompass rolling wheels, sprockets, and idlers, as described above.
  • the inner peripheral surface of the crawler main body with which the rolling wheels, the sprockets, and the idler come in contact is a wheel passing surface.
  • FIG. 1 relates to the first embodiment, and shows an explanatory view of a rotating wheel of the present invention.
  • the roller 10 has a pair of contact surfaces 12-1 and 12-2 at a predetermined distance in the axial direction, and the contact surfaces 12-1 and 12-2 have a pair of contact surfaces 12-1 and 12-2 in axial cross section. It is formed as an inclined surface which is not parallel to the rotation axis 14. That is, inclined surfaces having different distances from the rotary shaft 14 in the axial cross-sectional view, in which the inner edges facing each other and the outer edges not facing each other of the pair of contact surfaces 12-1 and 12-2 are different from each other. It is formed as. In the present embodiment, the surface is inclined in the direction away from the rotation shaft 14 from the inner edge opposite to each other to the outer edge on the non-opposite side, that is, in a V shape.
  • the inclination angle can be changed depending on the specification of the rubber crawler, the purpose of use, etc., but it is generally 3 degrees or more and 30 degrees or less, preferably 8 degrees to 12 degrees. When the inclination angle is smaller than 3 degrees, the effect is not exhibited. When the inclination angle is larger than 30 degrees, the load of the traveling machine body is applied to the crawler main body significantly deviated.
  • an edge having an acute angle with respect to a plane perpendicular to the rotation axis 14 necessarily exists on the pair of contact surfaces 12-1 and 12-2 of the rolling wheel 10, and the edge is shown in FIG. It is shown by 16-1 and 16-2.
  • Each of the edges 16-1 and 16-2 is rounded to be rounded.
  • the pair of contact surfaces 12-1 and 12-2 provided on the rolling wheel 10 are non-parallel to the wheel passage surface in an axial cross-sectional view, so the load on the entire contact surface, that is, the inner peripheral surface of the crawler body
  • the pressing force is uneven. That is, a stronger pressing force is generated on the side of the edges 16-1 and 16-2 which are formed at the acute angles of the edges of the contact surfaces 12-1 and 12-2.
  • the rubber crawler performs a pivoting motion etc., and a lateral shift force is generated in the crawler body, and when a force in a direction in which the crawler body and the rolling wheel 10 are disengaged is applied,
  • the more acute-angled edges 16-1 and 16-2 generate a large frictional force on the wheel passage surface.
  • the lateral displacement force is received, and lateral displacement of the crawler body and the roller 10 is prevented.
  • the edges 16-1 and 16-2 of the rolling wheel 10 are rounded, the inner peripheral surface of the crawler body is damaged by the acute-angled edges 16-1 and 16-2 in contact with the wheel passage surface. It is possible to prevent the wheel passing surface from being properly protected. Therefore, it is possible to use the rubber crawler for a long time while preventing derailing.
  • FIG. 2 relates to a second embodiment of the rubber crawler of the present invention, and shows a cross-sectional view of a portion of a roller wheel of the rubber crawler having a core metal.
  • a core metal 24 is embedded in the crawler main body 22 of the rubber crawler 20 at predetermined intervals in the circumferential direction.
  • the cored bar 24 is formed with a pair of guide projections 24-1 and 24-2 at the center in the width direction of the crawler main body 22 so as to protrude on the inner peripheral surface side of the crawler main body 22.
  • the metal core 24 is embedded in the widthwise outer side of the crawler main body 22 of the pair of guide protrusions 24-1 and 24-2 by extending both wing portions 24-3 and 24-4.
  • the rolling wheel 10 is the same as the rolling wheel shown in the first embodiment, is provided at the lower part of the traveling airframe, and rotates across the pair of guide protrusions 24-1 and 24-2 of the crawler main body 22.
  • the crawler main body 22 is configured to be able to rotate smoothly.
  • a plurality of grooves 18 are formed in the pair of contact surfaces 12-1 and 12-2 of the rotating wheel 10.
  • the groove 18 can be formed arbitrarily according to the purpose of use of the rubber crawler, and in FIG. 2, as an example, it has an inclination of about 30 degrees with the rotary shaft 14 in axial sectional view, and the rotary shaft 12 are formed so that the central angle formed by the center of the groove and the two adjacent grooves 18 is 30 degrees. As a result, it is possible to bring the roller 10 closer to the center of the crawler main body 22 as described later.
  • the roller 10 has a pair of contact surfaces 12-1 and 12-2 at a predetermined interval, and the contact surfaces 12-1 and 12-2 are with respect to the rotation shaft 14 of the roller 10 In the state of being formed as an inclined surface and in contact with the inner peripheral surface of the crawler main body 22, it faces in a V-shape. Further, the wheel passing surfaces 22-1 and 22-2 provided on the inner peripheral surface side of the crawler body 22 are, with respect to the inclined surfaces of the contact surfaces 12-1 and 12-2, in the width direction cross section of the crawler body 22. It is formed substantially in parallel. As a result, the rolling wheels 10 rotate with the contact surfaces 12-1 and 12-2 in surface contact with the wheel passage surfaces 22-1 and 22-2.
  • the wing parts 24-3 and 24-4 of the core 24 facing the wheel contact surfaces 12-1 and 12-2 are substantially parallel to the inclination of the contact surfaces 12-1 and 12-2. You may form in.
  • the wing passing portion 22-1 and 22-2 of the wheel main body 24 and the wing portion 24 of the metal core 24 are shown in the width direction cross section of the crawler body 22. 3, 24-4 are almost parallel. Therefore, the thickness of the members constituting the wheel passing surfaces 22-1 and 22-2 in the upper direction of the wing parts 24-3 and 24-4 of the core 24 becomes uniform over the width direction of the crawler main body 22. ing.
  • the members constituting the wheel passage surfaces 22-1 and 22-2 described above use high-hardness rubber members.
  • a high hardness rubber member for example, rubber having a hardness of 68 degrees to 88 degrees can be used.
  • the side edge portions 16-1 and 16 having an acute angle within the angle formed by the side surface of the rotating wheel 10 and the contact surfaces 12-1 and 12-2. -2 is rounded.
  • the pair of contact surfaces 12-1 and 12-2 of the rolling wheel 10 and the wing portions 24-3 and 24-4 of the core 24 are contact surfaces 12-1 and 12 in a cross-sectional view of the crawler main body 22 in the width direction.
  • the load of the traveling body applied to the cored bar 24 through the rolling wheel 10 is even, which is substantially parallel to the inclination of -2. Therefore, the force received from the rotating wheel 10 does not have to be concentrated at one place or the like, and the members constituting the wheel passage surfaces 22-1 and 22-2 use high strength members.
  • the occurrence of cracks in 22-1 and 22-2 is reduced and the durability of the rubber crawler is improved. Further, since the relationship between the rotating wheel 10 and the cored bar 24 is arranged in a well-balanced manner, good travel of the rubber crawler can be realized while preventing wheel removal.
  • the contact area of the crawler body with the wheel passing surfaces 22-1 and 22-2 Becomes large, and the surface pressure from the roller 10 becomes small. Therefore, when earth, sand, etc. infiltrates the peripheral surface side of the crawler body 22, the intruded earth, sand, etc. can be easily discharged, and the wheel passing surface 11-1, 22 can be stepped on the earth, sand, etc. -It is prevented that 2 is damaged.
  • the grooves 18 are formed in the pair of contact surfaces 12-1 and 12-2 having a V-shape and a tapered shape in the axial direction sectional view, when the rolling wheel 10 rotates, the rolling wheel 10 of the crawler body 22 is A force acts on the rotating wheel 10 so as to be centered on the width direction. Therefore, the traveling of the rubber crawler 20 is more stable.
  • the groove to be formed substantially coincides with the oblique direction of the lugs. It is possible to move the center by ten.
  • the side edges 16-1 and 16-2 of the contact surfaces 12-1 and 12-2 of the rolling wheel 10 are rounded, stress concentrates on the side edges 16-1 and 16-2. Can be avoided, and damage to the wheel passage surfaces 22-1 and 22-2 can be prevented. Therefore, the rubber crawler 20 can be used for a long time.
  • FIG. 3 relates to a third embodiment of the rubber crawler of the present invention, and shows a cross-sectional view of a part of the sprocket of the rubber crawler which does not have a core metal.
  • the sprockets 36 of the rubber crawler 30 are disposed such that the two flanges 42-1 and 42-2 face each other, and the outer edge portions of the two flanges 42-1 and 42-2 are connected by a plurality of round bars 38 Configuration (double flange type).
  • the contact surfaces 36-1 and 36-2 of the respective flanges are formed as inclined surfaces with respect to the rotation axis (not shown) of the sprocket, and the axial cross sections are not opposite to each other from the edge on the opposite side A surface inclined in a direction away from the rotation axis toward the side edge, that is, in a state where the sprocket 36 is in contact with the inner peripheral surface of the crawler main body 32, has a V shape. Further, the edge portions 40-1 and 40-2 of the pair of contact surfaces 36-1 and 36-2 are rounded.
  • driving protrusions 34 are formed at predetermined intervals in the circumferential direction.
  • the round bar 38 of the sprocket 36 is configured to pull the drive projection 34 to apply rotational force to the crawler body 32.
  • the idler (not shown) of the rubber crawler 30 has substantially the same structure as this sprocket 36, it has a structure without the round bar 38 which connects two flanges 42-1 and 42-2. It has become.
  • the wheel passage surfaces 32-1 and 32-2 in contact with the sprocket 36 on the inner peripheral surface of the crawler body 32 are the surfaces of the pair of contact surfaces 36-1 and 36-2 of the sprocket 36 in the widthwise cross section of the crawler body 32. It is formed substantially parallel to the inclined surface. Therefore, the pair of contact surfaces 36-1 and 36-2 of the sprocket 36 are in surface contact with the wheel passage surfaces 32-1 and 32-2 of the crawler body 32. Further, the members constituting the wheel passage surfaces 32-1 and 32-2 are constituted by members having high strength.
  • the angle of the inclined surface is generally 3 degrees or more and 30 degrees or less, preferably 8 degrees to 12 degrees, as in the first embodiment.
  • the above-described configuration exhibits the following effects.
  • the pair of inclined contact surfaces 36-1 and 36-2 of the sprocket 36 are also inclined. It rotates in surface contact with the wheel passing surfaces 32-1 and 32-2 on the inclined surface. Therefore, the force to shift in the lateral direction can be received and absorbed over the whole surface in the surface contact state of the mutually inclined surfaces, and the engagement between the sprocket 36 and the drive projection 34 is maintained without being released. Can be prevented from derailing.
  • the members constituting the wheel passage surfaces 32-1 and 32-2 use high strength members, the durability of the wheel passage surfaces 32-1 and 32-2 is improved. Furthermore, since the edges 40-1 and 40-2 of the pair of contact surfaces 36-1 and 36-2 of the sprocket 38 are rounded, concentration of stress is avoided and the wheel passing surfaces 32-1 and 32 can be avoided. -2 will be properly protected. Therefore, the rubber crawler 30 can be used for a long time. Further, since the idler also has substantially the same configuration as the sprocket as described above, the effects of the present invention can be exhibited.
  • FIG. 4 relates to a fourth embodiment of the rubber crawler of the present invention, and shows a cross-sectional view of a portion of the sprocket of the rubber crawler which does not have a core metal.
  • a difference from the third embodiment is that the inclination directions of the pair of contact surfaces 36-1 and 36-2 of the sprocket 36 and the wheel passing surfaces 32-1 and 32-2 are opposite to each other. That is, the axial cross section of the pair of contact surfaces 36-1 and 36-2 is a surface inclined in the direction approaching the rotation axis from the edge on the opposite side to the edge on the non-opposite side.
  • the same effect as described in the third embodiment is exhibited. That is, when a force is applied to the crawler body 32 from the lateral direction and the engagement between the sprocket 36 and the drive projection 34 is to be released, the same as the pair of inclined contact surfaces 36-1 and 36-2 of the sprocket 36. Since the inclined wheel passage surfaces 32-1 and 32-2 are in surface contact with each other, the force to shift in the lateral direction can be received and absorbed by this inclined surface. Therefore, the engagement between the sprocket 36 and the drive projection 34 can be maintained without disengaging to prevent the wheel from derailing.
  • the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.
  • the pair of inclined surfaces are inclined in a V shape or an inverted C shape in an axial cross sectional view, but a pair of inclined surfaces have the same direction
  • the effects described in the present invention can be exhibited also in the case of inclination.
  • the rotational force is The configuration to give is not limited to this configuration.
  • grooves may be formed in the pair of contact surfaces 36-1 and 36-2 as in the second embodiment.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Gears, Cams (AREA)

Abstract

[Problem] To provide: a wheel which can exactly prevent the wheel and a crawler body from being separated from each other in a rubber crawler; and a rubber crawler using the wheel. [Solution] This wheel 10, which rotates while contacting a wheel passing surface formed on an inner peripheral surface of a crawler body having an endless belt shape, is characterized by having a pair of contact surfaces 12-1, 12-2 having a predetermined space in the axial direction of a rotation shaft 14, wherein inner edge parts of the pair of contact surfaces 12-1, 12-2, which face each other, and outer edge parts 16-1, 16-2 on non-facing sides of the pair of contact surfaces 12-1, 12-2, respectively have differences in distance from the rotation shaft 14 thereto.

Description

車輪及び該車輪を用いたゴムクローラWheel and rubber crawler using the wheel
　本発明は、車輪及び該車輪を用いたゴムクローラ、特にクローラ本体の内周面に接触して回転する車輪と、該車輪が接触するクローラ本体の内周面に形成された車輪通過面とを有するゴムクローラに関する。 The present invention comprises a wheel and a rubber crawler using the wheel, particularly a wheel rotating in contact with the inner peripheral surface of the crawler body, and a wheel passage surface formed on the inner peripheral surface of the crawler body with which the wheel contacts. It has a rubber crawler.
　ゴムクローラはゴム製の無限軌道帯であり、現在では様々の用途に普及拡大し、その構成・種類も多岐に亘っている。ゴムクローラは、構成上大別すると芯金を有するものと有しないものとに分けられる。 The rubber crawler is an endless track made of rubber, and is now widely used and expanded for various applications, and its configuration and type are diverse. Rubber crawlers can be roughly classified into those having a core metal and those not having a core metal in terms of construction.
　しかし、芯金の有無に拘らず、ゴムクローラの走行機体には、無端帯状のクローラ本体の内側に種々の車輪が設けられている。例えば、クローラ本体を捲回し回動させるためのスプロケット（駆動輪）、該スプロケットの対向輪であるアイドラー、更に、走行機体の接地面側には、クローラ本体の回動をスムーズにするために転輪が複数設けられている。 However, various wheels are provided inside the endless belt-like crawler body in the traveling body of the rubber crawler, regardless of the presence or absence of the core metal. For example, a sprocket (drive wheel) for rotating the crawler body, an idler which is the opposite wheel of the sprocket, and a roller for smooth rotation of the crawler body on the contact surface side of the traveling machine body. Multiple rings are provided.
　芯金を有するゴムクローラにおいては、クローラ本体の幅方向の中央部に、転輪を案内する一対の案内突起部がクローラ本体の内周面側に突出して設けられている。転輪は、この案内突起部を跨いで回転するように構成されている。 In the rubber crawler having a core metal, a pair of guide projections for guiding the rolling wheels are provided at the central portion in the width direction of the crawler main body so as to protrude on the inner peripheral surface side of the crawler main body. The rolling wheel is configured to rotate across the guide projection.
　クローラ本体の内周面側には、転輪と接触する転輪通過面が、一対の案内突起部のクローラ本体の幅方向の両脇に所定の幅を有して、周方向に連続して設けられている。 On the inner circumferential surface side of the crawler main body, a roller passing surface in contact with the rolling wheels has a predetermined width on both sides in the width direction of the crawler main body of the pair of guide projections and is continuous in the circumferential direction It is provided.
　スプロケット（駆動輪）は、一対の案内突起部間に収納される厚さを有する１つの回転体で構成され、回転体の外周部に歯部が形成されている。この歯部が、クローラ本体の内周面側において、芯金と芯金の間に形成された溝部に嵌合し、回転力をクローラ本体に伝達するように構成されている。一方、アイドラーは、同様に一対の案内突起間に収納される厚さを有する１つの回転体で構成されるが、回転体の外周面には歯部が形成されていない。 The sprocket (driving wheel) is formed of one rotating body having a thickness accommodated between the pair of guide projections, and a tooth portion is formed on the outer peripheral portion of the rotating body. The tooth portion is configured to be fitted to a groove formed between the core metal and the core metal on the inner peripheral surface side of the crawler main body, and to transmit the rotational force to the crawler main body. On the other hand, although the idler is constituted by one rotating body having a thickness similarly accommodated between the pair of guide projections, no tooth portion is formed on the outer peripheral surface of the rotating body.
　図５は、芯金を有しないゴムクローラの籠型のスプロケットの部分についての一例を示している。ゴムクローラ４０は、クローラ本体４２の幅方向中央部に、駆動用突起部４４が形成されている。籠型のスプロケット４６は、駆動用突起部４４を挟んで２枚のフランジ４６－１、４６－２が対向して配置され、この２枚のフランジ４６－１、４６－２の外縁部付近を複数の丸棒４８で接続した構成（ダブルフランジ型）になっている。スプロケット４６が回転すると、丸棒４８が駆動用突起部４４に押し当たり、回転力をクローラ本体４２に伝達するように構成されている。このとき、フランジ４６－１、４６－２は、クローラ本体４２の内周面に接触した状態で回転している。一方、図示していないが、アイドラーも、同様に駆動用突起部を挟んで２枚のフランジを対向して配置した構成になっており、クローラ本体４２の内周面に接触した状態で回転する。 FIG. 5 shows an example of the portion of a rubber crawler wedge-shaped sprocket which does not have a core metal. The rubber crawler 40 has a drive projection 44 formed at the center in the width direction of the crawler body 42. In the wedge-shaped sprocket 46, two flanges 46-1 and 46-2 are disposed opposite to each other with the drive projection 44 in between, and the vicinity of the outer edge portion of the two flanges 46-1 and 46-2 is It has a configuration (double flange type) connected by a plurality of round bars 48. When the sprocket 46 is rotated, the round bar 48 is in contact with the driving projection 44 and is configured to transmit the rotational force to the crawler body 42. At this time, the flanges 46-1 and 46-2 rotate in contact with the inner peripheral surface of the crawler main body 42. On the other hand, although not shown, the idler also has a configuration in which the two flanges are disposed opposite to each other with the drive projection interposed therebetween, and rotates in contact with the inner circumferential surface of the crawler main body 42 .
　芯金を有しないゴムクローラの転輪は、芯金を有するゴムクローラ同様に、走行機体の接地面側に複数設けられ、この場合は、クローラ本体の内周面側の中央部に設けられた駆動用突起部４４を跨いで回転する。クローラ本体４２の内周面には、この転輪接触し通過する転輪通過面が、駆動用突起部４４のクローラ本体４２幅方向の両外側に設けられている。 Similar to the rubber crawler having a core metal, a plurality of rolling wheels of rubber crawlers not having a core metal are provided on the ground contact surface side of the traveling machine body, and in this case, provided at the central portion on the inner peripheral surface side of the crawler body. It is rotated across the drive projection 44. The inner circumferential surface of the crawler main body 42 is provided with a roller passing surface which makes contact with and passes through the rollers, on both outer sides in the width direction of the crawler main body 42 of the driving projection 44.
　芯金を有するゴムクローラでは転輪と案内突起部との係合により、芯金を有しないゴムクローラでは転輪と駆動用突起部との係合により、ゴムクローラの脱輪防止が図られている。脱輪とは、ゴムクローラが傾斜地走行時又は旋回時等を行ったときに、クローラ本体に横方向の大きな力が加わり、その状態で走行を続けると転輪と案内突起部又は転輪と駆動用突起部との係合が外れ、クローラ本体が横ずれして、転輪から完全に外れて走行が不可能になることを意味する。 In the rubber crawler having a cored bar, the rubber crawler without the cored bar is prevented from coming off due to the engagement between the rolling ring and the driving projection due to the engagement between the rolling ring and the guide projection. There is. Derailing means that when the rubber crawler travels on a slope or travels on a slope, a large lateral force is applied to the crawler body, and if traveling is continued in that state, the rotating wheel and the guide projection or the rotating wheel and the drive are driven. This means that the engagement with the projection is disengaged, and the crawler main body is laterally offset so as to completely disengage from the rolling wheels so that traveling is impossible.
　脱輪したゴムクローラを元の位置に嵌め直すことは容易ではなく、脱輪を防止する工夫が種々に行われている（例えば、特許文献１参照）。図６に、特許文献１に開示された脱輪を防止する方法を示す。ゴムクローラ６０は、クローラ本体６２に芯金６４があり、この芯金６４を外囲いしてなる抗張体６８を有する。一対の案内突起部６４－１（片方は示していない）を跨いで回転する転輪６８に、転輪６８の外周縁より突出する鍔部６８－１を形成し、転輪通過面６６には、その鍔部６８－１に対応して周方向に連続する溝部６６－１を形成している。 It is not easy to fit the derailed rubber crawler back to the original position, and various contrivances have been made to prevent derailing (see, for example, Patent Document 1). FIG. 6 shows the method of preventing wheel removal disclosed in Patent Document 1. The rubber crawler 60 has a core metal 64 on the crawler body 62 and a tensile body 68 formed by enclosing the core metal 64. A collar 68-1 protruding from the outer peripheral edge of the rotating wheel 68 is formed on the rotating wheel 68 rotating across the pair of guide projections 64-1 (one is not shown). A groove 66-1 continuous in the circumferential direction is formed corresponding to the flange 68-1.
特開平８－２８２５５７号公報JP-A-8-228557
　特許文献１に開示された転輪６８の鍔部６８－１と、転輪通過面６６の溝部６６－１による脱輪防止方法は、ゴムクローラ６０が旋回等を行いクローラ本体６２に横方向にずれる力が加わると、転輪６８の鍔部６８－１と転輪通過面６６に形成した溝部６６－１とが嵌合し、横方向の力を受け止め、案内突起部６４－１と転輪６８との係合を維持し脱輪が防止される。しかし、転輪６８に鍔部６８－１を、転輪通過面６６に溝部６６－１を形成する手間が掛かり、鍔部６８－１は外周縁より突出しているので曲げ等の変形を受け易く、また溝部６６－１には泥等が堆積し易い。そのような場合には、鍔部６８－１と溝部６６－１とが良好に嵌合できず、脱輪の防止の効果が発揮されなくなること等から、それに替わる方法が望まれていた。 The rubber crawler 60 turns and the like in the lateral direction of the crawler main body 62 according to the method of preventing wheel removal by the flange portion 68-1 of the rotary wheel 68 and the groove 66-1 of the rotary wheel passing surface 66 disclosed in Patent Document 1 When a shifting force is applied, the flange portion 68-1 of the rolling wheel 68 and the groove 66-1 formed in the rolling wheel passing surface 66 are fitted to receive the lateral force, and the guide projection 64-1 and the rolling wheel The engagement with 68 is maintained to prevent the wheels from being released. However, it takes time and effort to form the collar 68-1 on the rolling wheel 68 and the groove 66-1 on the rolling wheel passing surface 66, and since the collar 68-1 protrudes from the outer peripheral edge, it is susceptible to deformation such as bending. Also, mud and the like are easily deposited in the groove 66-1. In such a case, since the flange portion 68-1 and the groove portion 66-1 can not be fitted well and the effect of preventing the derailing can not be exhibited, etc., a method to replace it has been desired.
　更に、これまで、ゴムクローラの回動のためのスプロケットやアイドラーに脱輪を防止する機能を設けた構成は開示されておらず、これらにも脱輪を防止する機能が望まれていた。 Furthermore, so far, there has not been disclosed a configuration in which the sprocket for rotating the rubber crawler or the idler is provided with the function of preventing the derailing, and the function of preventing the derailing has been desired also for these.
　本発明は、上記課題に鑑みて為されたものであり、その目的は、ゴムクローラにおける車輪とクローラ本体との脱輪を的確に防止することのできる車輪及び該車輪を用いたゴムクローラを提供することにある。 The present invention has been made in view of the above problems, and an object thereof is to provide a wheel capable of accurately preventing the wheel of the rubber crawler from being released from the crawler main body, and a rubber crawler using the wheel. It is to do.
　上記目的を達成するため、請求項１に記載の車輪は、
　無端帯状のクローラ本体の内周面に形成された車輪通過面に接触して回転する車輪において、
　回転軸の軸方向に所定の間隔を置いた一対の接触面を有し、該一対の接触面は、前記軸方向断面において、互いに対向する内側縁部と非対向側の外側縁部とが、それぞれ前記回転軸からの距離を異にする傾斜面として形成されたことを特徴とする。 In order to achieve the above object, the wheel according to claim 1 is
In a wheel rotating in contact with a wheel passage surface formed on an inner circumferential surface of an endless belt-like crawler body,
The rotary shaft has a pair of contact surfaces spaced in the axial direction, and the pair of contact surfaces are, in the axial cross section, an inner edge facing each other and an outer edge not facing the other, It is characterized in that it is formed as an inclined surface different in distance from the rotation axis.
　この構成により、車輪に設けられた一対の接触面は、軸方向断面において、互いに対向する内側縁部と非対向側の外側縁部とが、それぞれ回転軸からの距離を異にする傾斜面として形成される。したがって、車輪が車輪通過面に接触する場合、接触面全体において荷重、すなわち、クローラ本体内周面への押圧力は均一ではない。すなわち、各接触面の縁部のより鋭角に形成されている縁部側でより強い押圧力が生じている。これにより、ゴムクローラが旋回運動等を行い、クローラ本体に横方向にずれる力が発生して、クローラ本体と車輪との係合が外れる方向の力が加わったとき、それぞれの接触面のより鋭角になっている側の縁部が車輪通過面に対し大きな摩擦力を発生する。これにより、横方向にずれる力を受け止め、クローラ本体と車輪が横方向にずれることが防止される。 With this configuration, the pair of contact surfaces provided on the wheel is an inclined surface in which the inner edge facing each other and the outer edge not facing each other are different in distance from the rotation axis in the axial cross section. It is formed. Therefore, when the wheel contacts the wheel passage surface, the load on the entire contact surface, that is, the pressing force on the inner circumferential surface of the crawler body is not uniform. That is, a stronger pressing force is generated on the side of the edge of each contact surface that is formed at a more acute angle. As a result, the rubber crawler performs a pivoting motion etc., and a lateral shift force is generated in the crawler body, and when a force in the direction in which the crawler body and the wheel are disengaged is applied, the acute angle of each contact surface The edge on the side of the wheel generates a large frictional force against the wheel passage surface. Thus, the lateral displacement force is received, and lateral displacement of the crawler body and the wheel is prevented.
　したがって、車輪と車輪通過面との関係において、クローラ本体の横方向にずれる力を受け止める構成を付与したので、クローラ本体と車輪との係合を維持し脱輪を効果的に防止することが可能である。 Therefore, in the relationship between the wheel and the wheel passage surface, a configuration is provided to receive the lateral displacement force of the crawler body, so that engagement between the crawler body and the wheel can be maintained and wheel removal can be effectively prevented. It is.
　請求項２に記載の車輪は、請求項１に記載の車輪において、
前記接触面と車輪側面との為す角度が鋭角となる縁部は、アールの付された形状とされたことを特徴とする。 The wheel according to claim 2 is the wheel according to claim 1
The edge where the angle between the contact surface and the side surface of the wheel is an acute angle is characterized by a rounded shape.
　この構成により、それぞれの接触面の回転軸に垂直の面に対して鋭角となる縁部が、アールの付された形状となっているので、車輪通過面と接触する鋭角の縁部によってクローラ本体の内周面が損傷されることを回避でき、車輪通過面を適切に保護することが可能である。したがって、脱輪を防止しつつゴムクローラの長期的な使用を可能にする。 With this configuration, the edge that forms an acute angle with respect to the plane perpendicular to the rotation axis of each contact surface has a rounded shape, so the crawler main body has an acute edge that contacts the wheel passage surface. Damage to the inner circumferential surface of the wheel can be avoided, and the wheel passage surface can be appropriately protected. Therefore, it is possible to use the rubber crawler for a long time while preventing derailing.
　上記目的を達成するため、請求項３に記載のゴムクローラは、
　無端帯状のクローラ本体と、請求項１又は２に記載の車輪とを備えるゴムクローラにおいて、
　前記車輪の一対の接触面の前記軸方向断面は、前記車輪通過面に対して非平行の傾斜した面として形成されたことを特徴とする。 In order to achieve the above object, the rubber crawler according to claim 3 is
A rubber crawler provided with an endless belt-like crawler body and the wheel according to claim 1 or 2
The axial cross section of the pair of contact surfaces of the wheel may be formed as an inclined surface which is not parallel to the wheel passage surface.
　この構成により、車輪に設けられた一対の接触面は、軸方向断面視で車輪通過面に対して非平行であるため、接触面全体において荷重、すなわち、クローラ本体内周面への押圧力は均一ではない。すなわち、各接触面の縁部のより鋭角に形成されている縁部側でより強い押圧力が生じている。これにより、ゴムクローラが旋回運動等を行い、クローラ本体に横方向にずれる力が発生して、クローラ本体と車輪との係合が外れる方向の力が加わったとき、それぞれの接触面のより鋭角になっている側の縁部が車輪通過面に対し大きな摩擦力を発生する。これにより、横方向にずれる力を受け止め、クローラ本体と車輪が横方向にずれることが防止される。 With this configuration, the pair of contact surfaces provided on the wheel is not parallel to the wheel passage surface in an axial cross-sectional view, so the load on the entire contact surface, that is, the pressing force on the inner circumferential surface of the crawler body is It is not uniform. That is, a stronger pressing force is generated on the side of the edge of each contact surface that is formed at a more acute angle. As a result, the rubber crawler performs a pivoting motion etc., and a lateral shift force is generated in the crawler body, and when a force in the direction in which the crawler body and the wheel are disengaged is applied, the acute angle of each contact surface The edge on the side of the wheel generates a large frictional force against the wheel passage surface. Thus, the lateral displacement force is received, and lateral displacement of the crawler body and the wheel is prevented.
　したがって、車輪と車輪通過面との関係において、クローラ本体の横方向にずれる力を受け止める構成を付与したので、クローラ本体と車輪との係合を維持し脱輪を効果的に防止することが可能である。 Therefore, in the relationship between the wheel and the wheel passage surface, a configuration is provided to receive the lateral displacement force of the crawler body, so that engagement between the crawler body and the wheel can be maintained and wheel removal can be effectively prevented. It is.
　請求項４に記載のゴムクローラは、請求項３に記載のゴムクローラにおいて、
　前記一対の接触面の前記軸方向断面は、互いに対向する側の縁部から非対向側の縁部に向かって前記回転軸から離反する方向に傾斜した面であることを特徴とする。 The rubber crawler according to claim 4 is the rubber crawler according to claim 3.
The axial cross section of the pair of contact surfaces is characterized in that it is a surface inclined in a direction away from the rotation axis from the edge on the opposite side to the edge on the non-facing side.
　この構成によれば、一対の接触面はクローラ本体内周面に接触した状態では、ハの字型で対向し、クローラ本体内周面を挟む方向で押圧力を発揮する。これにより、クローラ本体の横方向にずれようとする力をより大きな摩擦力で受け止めることができ、脱輪をより効果的に防止することが可能である。 According to this configuration, when the pair of contact surfaces are in contact with the inner peripheral surface of the crawler body, the pair of contact surfaces face each other in a V-shape, and exert a pressing force in the direction sandwiching the inner peripheral surface of the crawler body. As a result, it is possible to receive the force that tends to shift the crawler body in the lateral direction with a larger frictional force, and it is possible to more effectively prevent the derailing.
　請求項５に記載のゴムクローラは、
　無端帯状のクローラ本体と、請求項１又は２に記載の車輪とを備えるゴムクローラにおいて、
　前記車輪通過面は、前記クローラ本体の幅方向断面において前記接触面に対して略平行に形成されたことを特徴とする。 The rubber crawler according to claim 5 is
A rubber crawler provided with an endless belt-like crawler body and the wheel according to claim 1 or 2
The wheel passage surface is formed substantially parallel to the contact surface in a widthwise cross section of the crawler body.
　この構成により、車輪の一対の傾斜した接触面は、同じく傾斜した車輪通過面と傾斜面で面接触して回転する。したがって、クローラ本体を横方向にずらそうとする力が加わったときに、この横方向の力は、互いに傾斜した面の面接触状態で、すなわち面全体で受け止め吸収することができる。したがって、従来のようなクローラ本体の横ずれが的確に抑制され、より効果的に脱輪を防止することができる。 According to this configuration, the pair of inclined contact surfaces of the wheel rotates in surface contact with the inclined wheel passage surface in the same inclined surface. Therefore, when a force is applied to shift the crawler body in the lateral direction, the lateral force can be received and absorbed in the surface contact state of the mutually inclined surfaces, that is, the entire surface. Therefore, lateral displacement of the crawler body as in the prior art can be properly suppressed, and wheel removal can be prevented more effectively.
　請求項６に記載のゴムクローラは、請求項３～５の何れか１項に記載のゴムクローラにおいて、
　前記クローラ本体には、周方向に所定の間隔を置いて、かつ前記クローラ本体の幅方向に伸長するように、芯金が埋設されており、前記車輪の接触面に対向する前記芯金の外表面の前記幅方向断面は、前記接触面の傾斜に対して略平行となるように形成されたことを特徴とする。 The rubber crawler according to claim 6 is the rubber crawler according to any one of claims 3 to 5,
A core metal is embedded in the crawler main body at a predetermined interval in the circumferential direction and extends in the width direction of the crawler main body, and the outside of the core metal facing the contact surface of the wheel is embedded. The widthwise cross section of the surface is characterized in that it is formed to be substantially parallel to the inclination of the contact surface.
　この構成により、芯金を有するゴムクローラにおいて、車輪の一対の接触面と芯金の外表面の幅方向断面は、接触面の傾斜に対して略平行となるので、車輪を介して芯金に印加される走行機体の荷重が均等になり、車輪から受ける力が集中せずに済むため、車輪通過面にクラックが発生することを低減することができる。また、車輪と芯金の関係がバランスの良い配置となるので、脱輪を防止しつつゴムクローラの良好な走行性が実現される。 With this configuration, in the rubber crawler having the core, the cross sections in the width direction of the pair of contact surfaces of the wheel and the outer surface of the core are substantially parallel to the inclination of the contact surface. The load applied to the traveling vehicle becomes even, and the force received from the wheels does not concentrate, so it is possible to reduce the occurrence of cracks in the wheel passage surface. In addition, since the relationship between the wheel and the core metal is well-balanced, good travel of the rubber crawler can be realized while preventing wheel removal.
　請求項７に記載のゴムクローラは、請求項１～６の何れか１項に記載のゴムクローラにおいて、
　前記クローラ本体の前記車輪通過面を構成する部材は、高硬度のゴム部材で成ることを特徴とする。 The rubber crawler according to claim 7 is the rubber crawler according to any one of claims 1 to 6.
A member constituting the wheel passage surface of the crawler main body is characterized by being made of a high hardness rubber member.
　この構成により、脱輪を的確に防止しつつ車輪通過面の損傷等が有効に防止されるので、ゴムクローラの更なる耐久性の向上が図られる。 According to this configuration, damage to the wheel passage surface and the like can be effectively prevented while accurately preventing wheel removal, so that the durability of the rubber crawler can be further improved.
　本発明の車輪及び該車輪を用いたゴムクローラによれば、車輪（転輪、スプロケット、アイドラー等）の一対の接触面を、軸方向断面視で車輪通過面に対して非平行の傾斜した面として形成することで、クローラ本体に横方向にずらそうとする力が加わったときに、それぞれの接触面の車輪通過面と接触する縁部で、この横方向の力を受け止めるより大きな摩擦力が発生するので、車輪とクローラ本体との係合が維持され脱輪を防止することが可能である。 According to the wheel of the present invention and the rubber crawler using the wheel, a pair of contact surfaces of the wheels (rollers, sprockets, idlers, etc.) are inclined not parallel to the wheel passage surface in an axial sectional view In the case where the lateral movement of the crawler body is applied to the crawler body, a greater frictional force is applied at the edge contacting the wheel passage surface of each contact surface to receive this lateral force. As it occurs, the engagement between the wheel and the crawler body can be maintained to prevent the wheel from derailing.
本発明のゴムクローラの第１の実施の形態に係り、転輪についての説明図を示す。The 1st embodiment of the rubber crawler of the present invention is shown, and an explanatory view about rolling wheels is shown. 本発明のゴムクローラの第２の実施の形態に係り、芯金を有するゴムクローラの転輪の部分についての横断面図を示す。The 2nd Embodiment of the rubber crawler of this invention is shown, and the cross-sectional view about the part of the rolling wheel of a rubber crawler which has a metal core is shown. 本発明のゴムクローラの第３の実施の形態に係り、芯金を有しないゴムクローラのスプロケットの部分についての横断面図を示す。The 3rd embodiment of the rubber crawler of this invention is related, and the cross-sectional view about the part of the sprocket of the rubber crawler which does not have a core metal is shown. 本発明のゴムクローラの第４の実施の形態に係り、芯金を有しないゴムクローラのスプロケットの部分についての横断面図を示す。The 4th Embodiment of the rubber crawler of this invention is shown, and the cross-sectional view about the part of the sprocket of the rubber crawler which does not have a core metal is shown. 従来の芯金を有しないゴムクローラのスプロケットの部分の説明図である。It is explanatory drawing of the part of the sprocket of the rubber crawler which does not have the conventional core metal. 特許文献１の脱輪防止方法についての説明図である。It is explanatory drawing about the derailment prevention method of patent document 1. FIG.
　本発明の実施の形態を以下、図面を用いて詳述する。本明細書では、車輪という用語は、前述のように転輪、スプロケット、アイドラーを包含する用語として使用している。また、転輪、スプロケット、アイドラーが接触するクローラ本体の内周面を車輪通過面としている。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. As used herein, the term wheel is used to encompass rolling wheels, sprockets, and idlers, as described above. In addition, the inner peripheral surface of the crawler main body with which the rolling wheels, the sprockets, and the idler come in contact is a wheel passing surface.
　（第１の実施の形態）
　図１は、第１の実施の形態に係り、本発明の転輪についての説明図を示す。転輪１０は、軸方向に所定の間隔を置いて一対の接触面１２－１、１２－２を有し、接触面１２－１．１２－２は、軸方向断面視で、転輪１０の回転軸１４に対して非平行の傾斜した面として形成されている。すなわち、一対の接触面１２－１、１２－２の互いに対向する内側縁部と非対向側の外側縁部とは、軸方向断面視で、それぞれ回転軸１４からの距離を異にする傾斜面として形成されている。本実施の形態では、互いに対向する内側縁部から非対向側の外側縁部に向かって回転軸１４から離反する方向に傾斜した面、すなわちハの字型になっている。 First Embodiment
FIG. 1 relates to the first embodiment, and shows an explanatory view of a rotating wheel of the present invention. The roller 10 has a pair of contact surfaces 12-1 and 12-2 at a predetermined distance in the axial direction, and the contact surfaces 12-1 and 12-2 have a pair of contact surfaces 12-1 and 12-2 in axial cross section. It is formed as an inclined surface which is not parallel to the rotation axis 14. That is, inclined surfaces having different distances from the rotary shaft 14 in the axial cross-sectional view, in which the inner edges facing each other and the outer edges not facing each other of the pair of contact surfaces 12-1 and 12-2 are different from each other. It is formed as. In the present embodiment, the surface is inclined in the direction away from the rotation shaft 14 from the inner edge opposite to each other to the outer edge on the non-opposite side, that is, in a V shape.
　この傾斜角度は、ゴムクローラの仕様や使用目的等により変更可能であるが、概ね３度以上、３０度以下、好ましくは８度から１２度である。傾斜角度を３度よりも小さくすると効果が発揮されず、３０度より大きくするとクローラ本体に走行機体の荷重が著しく偏って印加される。 The inclination angle can be changed depending on the specification of the rubber crawler, the purpose of use, etc., but it is generally 3 degrees or more and 30 degrees or less, preferably 8 degrees to 12 degrees. When the inclination angle is smaller than 3 degrees, the effect is not exhibited. When the inclination angle is larger than 30 degrees, the load of the traveling machine body is applied to the crawler main body significantly deviated.
　この構成により、転輪１０の一対の接触面１２－１、１２－２には、回転軸１４に垂直な面に対して鋭角となる縁部が必ず存在し、その縁部を、図１では１６－１、１６－２で示している。それぞれの縁部１６－１、１６－２には丸め加工が施されてアールが付されている。 According to this configuration, an edge having an acute angle with respect to a plane perpendicular to the rotation axis 14 necessarily exists on the pair of contact surfaces 12-1 and 12-2 of the rolling wheel 10, and the edge is shown in FIG. It is shown by 16-1 and 16-2. Each of the edges 16-1 and 16-2 is rounded to be rounded.
　この構成により、以下の効果を発揮する。転輪１０に設けられた一対の接触面１２－１，１２－２は、軸方向断面視で車輪通過面に対して非平行であるため、接触面全体において荷重、すなわち、クローラ本体内周面への押圧力は不均一となる。すなわち、各接触面１２－１、１２－２の縁部のより鋭角に形成されている縁部１６－１、１６－２側でより強い押圧力が生じている。これにより、ゴムクローラが旋回運動等を行い、クローラ本体に横方向にずれる力が発生して、クローラ本体と転輪１０との係合が外れる方向の力が加わったとき、それぞれの接触面のより鋭角になっている側の縁部１６－１、１６－２が車輪通過面に対し大きな摩擦力を発生する。これにより、横方向にずれる力を受け止め、クローラ本体と転輪１０が横方向にずれることが防止される。 This configuration exhibits the following effects. The pair of contact surfaces 12-1 and 12-2 provided on the rolling wheel 10 are non-parallel to the wheel passage surface in an axial cross-sectional view, so the load on the entire contact surface, that is, the inner peripheral surface of the crawler body The pressing force is uneven. That is, a stronger pressing force is generated on the side of the edges 16-1 and 16-2 which are formed at the acute angles of the edges of the contact surfaces 12-1 and 12-2. As a result, the rubber crawler performs a pivoting motion etc., and a lateral shift force is generated in the crawler body, and when a force in a direction in which the crawler body and the rolling wheel 10 are disengaged is applied, The more acute-angled edges 16-1 and 16-2 generate a large frictional force on the wheel passage surface. As a result, the lateral displacement force is received, and lateral displacement of the crawler body and the roller 10 is prevented.
　更に、一対の接触面１２－１、１２－２はクローラ本体内周面に接触した状態では、ハの字型で対向しているので、クローラ本体内周面を挟む方向で押圧力を発揮する。これにより、クローラ本体の横方向にずれようとする力をより大きな摩擦力で受け止めることができ、脱輪をより効果的に防止することが可能である。 Furthermore, in the state where the pair of contact surfaces 12-1 and 12-2 are in contact with the inner peripheral surface of the crawler body, they face in a C shape, and therefore exert a pressing force in the direction sandwiching the inner peripheral surface of the crawler body. . As a result, it is possible to receive the force that tends to shift the crawler body in the lateral direction with a larger frictional force, and it is possible to more effectively prevent the derailing.
　また、転輪１０の縁部１６－１、１６－２にアールが付されているので、車輪通過面と接触する鋭角の縁部１６－１、１６－２によってクローラ本体の内周面が損傷されることを回避でき、車輪通過面を適切に保護することが可能である。したがって、脱輪を防止しつつゴムクローラの長期的な使用を可能にする。 In addition, since the edges 16-1 and 16-2 of the rolling wheel 10 are rounded, the inner peripheral surface of the crawler body is damaged by the acute-angled edges 16-1 and 16-2 in contact with the wheel passage surface. It is possible to prevent the wheel passing surface from being properly protected. Therefore, it is possible to use the rubber crawler for a long time while preventing derailing.
　（第２の実施の形態）
　図２は、本発明のゴムクローラの第２の実施の形態に係り、芯金を有するゴムクローラの転輪の部分についての横断面図を示す。 Second Embodiment
FIG. 2 relates to a second embodiment of the rubber crawler of the present invention, and shows a cross-sectional view of a portion of a roller wheel of the rubber crawler having a core metal.
　ゴムクローラ２０のクローラ本体２２には、周方向に所定の間隔で芯金２４が埋設されている。芯金２４は、クローラ本体２２の幅方向中央部に、一対の案内突起部２４－１、２４－２が、クローラ本体２２の内周面側に突出して形成されている。芯金２４は、一対の案内突起部２４－１、２４－２のクローラ本体２２の幅方向の外側に、それぞれ両翼部２４－３、２４－４を伸長して埋設されている。 A core metal 24 is embedded in the crawler main body 22 of the rubber crawler 20 at predetermined intervals in the circumferential direction. The cored bar 24 is formed with a pair of guide projections 24-1 and 24-2 at the center in the width direction of the crawler main body 22 so as to protrude on the inner peripheral surface side of the crawler main body 22. The metal core 24 is embedded in the widthwise outer side of the crawler main body 22 of the pair of guide protrusions 24-1 and 24-2 by extending both wing portions 24-3 and 24-4.
　転輪１０は、第１の実施の形態で示した転輪と同じであり、走行機体の下部に設けられ、クローラ本体２２の一対の案内突起部２４－１、２４－２を跨いで回転し、クローラ本体２２が円滑に回動できるように構成されている。ただし、転輪１０の一対の接触面１２－１、１２－２には溝１８が複数形成されている。この溝１８は、ゴムクローラの使用目的に応じて任意に形成することが可能であり、図２では、例として、軸方向断面視で回転軸１４と略３０度の傾斜を有し、回転軸の中心と２つの隣り合う溝１８で形成される中心角が３０度となるように１２本形成している。これにより、後述するように転輪１０をクローラ本体２２の中心に寄せることができる。 The rolling wheel 10 is the same as the rolling wheel shown in the first embodiment, is provided at the lower part of the traveling airframe, and rotates across the pair of guide protrusions 24-1 and 24-2 of the crawler main body 22. The crawler main body 22 is configured to be able to rotate smoothly. However, a plurality of grooves 18 are formed in the pair of contact surfaces 12-1 and 12-2 of the rotating wheel 10. The groove 18 can be formed arbitrarily according to the purpose of use of the rubber crawler, and in FIG. 2, as an example, it has an inclination of about 30 degrees with the rotary shaft 14 in axial sectional view, and the rotary shaft 12 are formed so that the central angle formed by the center of the groove and the two adjacent grooves 18 is 30 degrees. As a result, it is possible to bring the roller 10 closer to the center of the crawler main body 22 as described later.
　前述のように転輪１０は、所定の間隔を置いて一対の接触面１２－１、１２－２を有し、接触面１２－１、１２－２は転輪１０の回転軸１４に対して傾斜した面として形成され、クローラ本体２２の内周面に接触した状態では、ハの字型で対向している。また、クローラ本体２２の内周面側に設けられた車輪通過面２２－１、２２－２は、クローラ本体２２の幅方向断面において、接触面１２－１、１２－２の傾斜面に対して略平行に形成されている。これにより、転輪１０は、その接触面１２－１、１２－２が車輪通過面２２－１、２２－２と面接触して回転する。 As described above, the roller 10 has a pair of contact surfaces 12-1 and 12-2 at a predetermined interval, and the contact surfaces 12-1 and 12-2 are with respect to the rotation shaft 14 of the roller 10 In the state of being formed as an inclined surface and in contact with the inner peripheral surface of the crawler main body 22, it faces in a V-shape. Further, the wheel passing surfaces 22-1 and 22-2 provided on the inner peripheral surface side of the crawler body 22 are, with respect to the inclined surfaces of the contact surfaces 12-1 and 12-2, in the width direction cross section of the crawler body 22. It is formed substantially in parallel. As a result, the rolling wheels 10 rotate with the contact surfaces 12-1 and 12-2 in surface contact with the wheel passage surfaces 22-1 and 22-2.
　更に、車輪の接触面１２－１、１２－２に対向する芯金２４の翼部２４－３、２４－４は、接触面１２－１、１２－２の傾斜に対して略平行になるように形成しても良い。本実施の形態では、一対の接触面１２－１、１２－２の傾斜に対してクローラ本体２２の幅方向断面で、車輪通過面２２－１、２２－２及び芯金２４の翼部２４－３、２４－４は略平行になっている。したがって、芯金２４の翼部２４－３、２４－４の上部方向の車輪通過面２２－１、２２－２を構成する部材の厚さは、クローラ本体２２の幅方向に亘って均一となっている。 Further, the wing parts 24-3 and 24-4 of the core 24 facing the wheel contact surfaces 12-1 and 12-2 are substantially parallel to the inclination of the contact surfaces 12-1 and 12-2. You may form in. In the present embodiment, with respect to the inclination of the pair of contact surfaces 12-1 and 12-2, the wing passing portion 22-1 and 22-2 of the wheel main body 24 and the wing portion 24 of the metal core 24 are shown in the width direction cross section of the crawler body 22. 3, 24-4 are almost parallel. Therefore, the thickness of the members constituting the wheel passing surfaces 22-1 and 22-2 in the upper direction of the wing parts 24-3 and 24-4 of the core 24 becomes uniform over the width direction of the crawler main body 22. ing.
　加えて、上述した車輪通過面２２－１、２２－２を構成する部材は、高硬度のゴム部材を用いている。高硬度のゴム部材として、例えば、硬度が６８度から８８度のゴムを用いることができる。ここで、芯金２４の翼部２４－３、２４－４の一部を露出させ、車輪通過面として使用することも可能である。更に、転輪１０の回転軸１４を含む断面視において、転輪１０の側面と接触面１２－１、１２－２との為す角度の内で鋭角となる方の側縁部１６－１，１６－２が丸め加工されている。 In addition, the members constituting the wheel passage surfaces 22-1 and 22-2 described above use high-hardness rubber members. As a high hardness rubber member, for example, rubber having a hardness of 68 degrees to 88 degrees can be used. Here, it is possible to expose a part of the wings 24-3 and 24-4 of the core 24 and use it as a wheel passage surface. Furthermore, in a cross-sectional view including the rotation shaft 14 of the rotating wheel 10, the side edge portions 16-1 and 16 having an acute angle within the angle formed by the side surface of the rotating wheel 10 and the contact surfaces 12-1 and 12-2. -2 is rounded.
　上記の構成により、以下の効果を発揮する。クローラ本体２２に横方向の力が加わり、転輪１０と案内突起部２４－１、２４－２との係合が外れようとする場合、転輪１０の一対の傾斜した接触面１２－１、１２－２は、同じく傾斜した車輪通過面と面接触して、すなわち、ゴムクローラ２０の走行時には、転輪１０の一対の接触面１２－１、１２－２は、クローラ本体２２の車輪通過面２２－１、２２－２に完全に面接触して回転しているので、クローラ本体２２を横方向にずらそうとする力が加わったときに、この横方向の力は、互いに傾斜した面の面接触状態で、すなわち面全体で受け止め吸収することができる。したがって、従来のようなクローラ本体の横ずれが的確に抑制され、より効果的に脱輪を防止することができる。 The above-described configuration exhibits the following effects. When a lateral force is applied to the crawler body 22 and the engagement between the rolling wheel 10 and the guide projections 24-1 and 24-2 is to be disengaged, a pair of inclined contact surfaces 12-1 of the rolling wheel 10, Similarly, when the rubber crawler 20 travels, the pair of contact surfaces 12-1 and 12-2 of the rolling wheels 10 are the wheel passing surfaces of the crawler main body 22. 22-1 and 22-2, since the surface is rotated completely in contact with the surface, when the lateral force is applied to shift the crawler main body 22, the lateral force is caused by the inclined surfaces of each other. It can be received and absorbed in surface contact, that is, across the surface. Therefore, lateral displacement of the crawler body as in the prior art can be properly suppressed, and wheel removal can be prevented more effectively.
　更に、転輪１０の一対の接触面１２－１、１２－２と芯金２４の翼部２４－３、２４－４は、クローラ本体２２の幅方向断面視で、接触面１２－１、１２－２の傾斜に対して略平行としており、転輪１０を介して芯金２４に印加される走行機体の荷重が均等になる。したがって、転輪１０から受ける力が一箇所等に集中せずに済み、然も車輪通過面２２－１、２２－２を構成する部材は、強度の高い部材を用いているので、車輪通過面２２－１、２２－２にクラックが発生することが低減されゴムクローラの耐久性が向上する。また、転輪１０と芯金２４の関係がバランスの良い配置となるので、脱輪を防止しつつゴムクローラの良好な走行性が実現される。 Furthermore, the pair of contact surfaces 12-1 and 12-2 of the rolling wheel 10 and the wing portions 24-3 and 24-4 of the core 24 are contact surfaces 12-1 and 12 in a cross-sectional view of the crawler main body 22 in the width direction. The load of the traveling body applied to the cored bar 24 through the rolling wheel 10 is even, which is substantially parallel to the inclination of -2. Therefore, the force received from the rotating wheel 10 does not have to be concentrated at one place or the like, and the members constituting the wheel passage surfaces 22-1 and 22-2 use high strength members. The occurrence of cracks in 22-1 and 22-2 is reduced and the durability of the rubber crawler is improved. Further, since the relationship between the rotating wheel 10 and the cored bar 24 is arranged in a well-balanced manner, good travel of the rubber crawler can be realized while preventing wheel removal.
　すなわち、軸方向断面視で一対の接触面１２－１、１２－２は、ハの字型でかつテーパ―形状であるので、クローラ本体の車輪通過面２２－１、２２－２との接触面積が大きくなり、転輪１０からの面圧が小さくなる。したがって、クローラ本体内２２の周面側に土砂等が浸入した場合には、侵入した土砂等が排出し易い上に、転輪１０が浸入した土砂等を踏んで車輪通過面１１－１、２２－２を傷つけることが防止される。 That is, since the pair of contact surfaces 12-1 and 12-2 are V-shaped and tapered in axial sectional view, the contact area of the crawler body with the wheel passing surfaces 22-1 and 22-2 Becomes large, and the surface pressure from the roller 10 becomes small. Therefore, when earth, sand, etc. infiltrates the peripheral surface side of the crawler body 22, the intruded earth, sand, etc. can be easily discharged, and the wheel passing surface 11-1, 22 can be stepped on the earth, sand, etc. -It is prevented that 2 is damaged.
　更に、軸方向断面視でハの字型でかつテーパー形状の一対の接触面１２－１、１２－２に溝１８を形成したので、転輪１０が回転すると、転輪１０をクローラ本体２２の幅方向中心に寄せるように転輪１０に力が働く。したがって、より安定したゴムクローラ２０の走行が確保される。例えば、クローラ本体２２の外周面に形成されたラグのパターンが、周方向外側に向かって斜めに伸びているような場合、形成する溝をこのラグの斜めの方向と略一致させることで転輪１０を中心により寄せることが可能である。 Furthermore, since the grooves 18 are formed in the pair of contact surfaces 12-1 and 12-2 having a V-shape and a tapered shape in the axial direction sectional view, when the rolling wheel 10 rotates, the rolling wheel 10 of the crawler body 22 is A force acts on the rotating wheel 10 so as to be centered on the width direction. Therefore, the traveling of the rubber crawler 20 is more stable. For example, when the pattern of the lugs formed on the outer peripheral surface of the crawler main body 22 extends diagonally outward in the circumferential direction, the groove to be formed substantially coincides with the oblique direction of the lugs. It is possible to move the center by ten.
　更に、転輪１０の接触面１２－１、１２－２の側縁部１６－１，１６－２に丸め加工を施したので、応力がその側縁部１６－１、１６－２に集中することが回避され、車輪通過面２２－１、２２－２に損傷等を発生することを防止することができる。したがって、ゴムクローラ２０を長期に亘り使用することが可能となる。 Furthermore, since the side edges 16-1 and 16-2 of the contact surfaces 12-1 and 12-2 of the rolling wheel 10 are rounded, stress concentrates on the side edges 16-1 and 16-2. Can be avoided, and damage to the wheel passage surfaces 22-1 and 22-2 can be prevented. Therefore, the rubber crawler 20 can be used for a long time.
　（第３の実施の形態）
　図３は、本発明のゴムクローラの第３の実施の形態に係り、芯金を有しないゴムクローラのスプロケットの部分についての横断面図を示す。 Third Embodiment
FIG. 3 relates to a third embodiment of the rubber crawler of the present invention, and shows a cross-sectional view of a part of the sprocket of the rubber crawler which does not have a core metal.
　ゴムクローラ３０のスプロケット３６は、２枚のフランジ４２－１、４２－２が対向して配置され、この２枚のフランジ４２－１、４２－２の外縁部付近を複数の丸棒３８で接続した構成（ダブルフランジ型）になっている。それぞれのフランジの接触面３６－１、３６－２は、スプロケットの回転軸（図示していない）に対して傾斜した面として形成され、軸方向断面は、互いに対向する側の縁部から非対向側の縁部に向かって回転軸から離反する方向に傾斜した面、すなわちスプロケット３６がクローラ本体３２の内周面に接触した状態では、ハの字型となっている。また、一対の接触面３６－１、３６－２の縁部４０－１、４０－２は、丸め加工が施されている。 The sprockets 36 of the rubber crawler 30 are disposed such that the two flanges 42-1 and 42-2 face each other, and the outer edge portions of the two flanges 42-1 and 42-2 are connected by a plurality of round bars 38 Configuration (double flange type). The contact surfaces 36-1 and 36-2 of the respective flanges are formed as inclined surfaces with respect to the rotation axis (not shown) of the sprocket, and the axial cross sections are not opposite to each other from the edge on the opposite side A surface inclined in a direction away from the rotation axis toward the side edge, that is, in a state where the sprocket 36 is in contact with the inner peripheral surface of the crawler main body 32, has a V shape. Further, the edge portions 40-1 and 40-2 of the pair of contact surfaces 36-1 and 36-2 are rounded.
　クローラ本体３２の内周面の幅方向中央部には、駆動用突起部３４が、周方向に所定の間隔を置いて形成されている。スプロケット３６の丸棒３８がこの駆動用突起部３４を引き掛けて回転力をクローラ本体３２に与えるように構成されている。なお、ゴムクローラ３０のアイドラー（図示していない）は、このスプロケット３６と略同じ構成を有しているが、２枚のフランジ４２－１、４２－２を接続する丸棒３８がない構成になっている。 At the center in the width direction of the inner peripheral surface of the crawler main body 32, driving protrusions 34 are formed at predetermined intervals in the circumferential direction. The round bar 38 of the sprocket 36 is configured to pull the drive projection 34 to apply rotational force to the crawler body 32. In addition, although the idler (not shown) of the rubber crawler 30 has substantially the same structure as this sprocket 36, it has a structure without the round bar 38 which connects two flanges 42-1 and 42-2. It has become.
　クローラ本体３２の内周面において、スプロケット３６と接触する車輪通過面３２－１、３２－２は、クローラ本体３２の幅方向断面において、スプロケット３６の一対の接触面３６－１、３６－２の傾斜面に対して略平行に形成されている。したがって、スプロケット３６の一対の接触面３６－１、３６－２は、クローラ本体３２の車輪通過面３２－１、３２－２と面接触する。また、その車輪通過面３２－１、３２－２を構成する部材は、強度の高い部材で構成されている。ここで、傾斜面の角度については、第１の実施の形態と同様に、概ね３度以上３０度以下、好ましくは８度から１２度である。 The wheel passage surfaces 32-1 and 32-2 in contact with the sprocket 36 on the inner peripheral surface of the crawler body 32 are the surfaces of the pair of contact surfaces 36-1 and 36-2 of the sprocket 36 in the widthwise cross section of the crawler body 32. It is formed substantially parallel to the inclined surface. Therefore, the pair of contact surfaces 36-1 and 36-2 of the sprocket 36 are in surface contact with the wheel passage surfaces 32-1 and 32-2 of the crawler body 32. Further, the members constituting the wheel passage surfaces 32-1 and 32-2 are constituted by members having high strength. Here, the angle of the inclined surface is generally 3 degrees or more and 30 degrees or less, preferably 8 degrees to 12 degrees, as in the first embodiment.
　上記の構成により、以下の効果を発揮する。クローラ本体３２に横方向から力が加わり、スプロケット３６と駆動用突起部３４との係合が外れようとする場合、スプロケット３６の一対の傾斜した接触面３６－１，３６－２は、同じく傾斜した車輪通過面３２－１、３２－２と傾斜面で面接触して回転する。したがって、横方向にずれようとする力は、この互いに傾斜した面の面接触状態で、面全体で受け止め吸収することができ、スプロケット３６と駆動用突起部３４との係合は外れずに維持され、脱輪を防止することができる。 The above-described configuration exhibits the following effects. When a force is applied to the crawler body 32 from the lateral direction and the engagement between the sprocket 36 and the drive projection 34 is to be disengaged, the pair of inclined contact surfaces 36-1 and 36-2 of the sprocket 36 are also inclined. It rotates in surface contact with the wheel passing surfaces 32-1 and 32-2 on the inclined surface. Therefore, the force to shift in the lateral direction can be received and absorbed over the whole surface in the surface contact state of the mutually inclined surfaces, and the engagement between the sprocket 36 and the drive projection 34 is maintained without being released. Can be prevented from derailing.
　更に、車輪通過面３２－１、３２－２を構成する部材は、強度の高い部材を用いているので車輪通過面３２－１、３２－２の耐久性は向上する。更に、スプロケット３８の一対の接触面３６－１、３６－２の縁部４０－１、４０－２が丸め加工されているので、応力が集中することが回避され車輪通過面３２－１、３２－２を適切に保護することとなる。したがって、ゴムクローラ３０を長期に亘り使用することが可能となる。また、アイドラーについても、前述のようにスプロケットと略同じ構成であるので、本発明の効果を発揮することができる。 Further, since the members constituting the wheel passage surfaces 32-1 and 32-2 use high strength members, the durability of the wheel passage surfaces 32-1 and 32-2 is improved. Furthermore, since the edges 40-1 and 40-2 of the pair of contact surfaces 36-1 and 36-2 of the sprocket 38 are rounded, concentration of stress is avoided and the wheel passing surfaces 32-1 and 32 can be avoided. -2 will be properly protected. Therefore, the rubber crawler 30 can be used for a long time. Further, since the idler also has substantially the same configuration as the sprocket as described above, the effects of the present invention can be exhibited.
　（第４の実施の形態）
　図４は、本発明のゴムクローラの第４の実施の形態に係り、芯金を有しないゴムクローラのスプロケットの部分についての横断面図を示す。第３の実施の形態と異なる点は、スプロケット３６の一対の接触面３６－１、３６－２と、車輪通過面３２－１、３２－２の傾斜方向が共に逆の方向である。すなわち、一対の接触面３６－１、３６－２の軸方向断面は、互いに対向する側の縁部から非対向側の縁部に向かって回転軸に近接する方向に傾斜した面である。 Fourth Embodiment
FIG. 4 relates to a fourth embodiment of the rubber crawler of the present invention, and shows a cross-sectional view of a portion of the sprocket of the rubber crawler which does not have a core metal. A difference from the third embodiment is that the inclination directions of the pair of contact surfaces 36-1 and 36-2 of the sprocket 36 and the wheel passing surfaces 32-1 and 32-2 are opposite to each other. That is, the axial cross section of the pair of contact surfaces 36-1 and 36-2 is a surface inclined in the direction approaching the rotation axis from the edge on the opposite side to the edge on the non-opposite side.
　この構成においても、第３の実施の形態で述べた同様の効果を発揮する。すなわち、クローラ本体３２に横方向から力が加わり、スプロケット３６と駆動用突起部３４との係合が外れようとする場合、スプロケット３６の一対の傾斜した接触面３６－１、３６－２と同じく傾斜した車輪通過面３２－１、３２－２とが面接触しているので、横方向にずれようとする力は、この傾斜面にて受け止め吸収することができる。したがって、スプロケット３６と駆動用突起部３４との係合は外れずに維持され、脱輪を防止することができる。 Also in this configuration, the same effect as described in the third embodiment is exhibited. That is, when a force is applied to the crawler body 32 from the lateral direction and the engagement between the sprocket 36 and the drive projection 34 is to be released, the same as the pair of inclined contact surfaces 36-1 and 36-2 of the sprocket 36. Since the inclined wheel passage surfaces 32-1 and 32-2 are in surface contact with each other, the force to shift in the lateral direction can be received and absorbed by this inclined surface. Therefore, the engagement between the sprocket 36 and the drive projection 34 can be maintained without disengaging to prevent the wheel from derailing.
　なお、本発明は、上述の実施の形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲で種々の変更が可能である。例えば、第１から第４の実施の形態では、一対の傾斜面は、軸方向断面視でハの字型又は逆ハの字型に傾斜した例を示したが、一対の傾斜面が同じ方向に傾斜している場合についても、本発明で説明した効果を奏することができる。 The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, in the first to fourth embodiments, an example is shown in which the pair of inclined surfaces are inclined in a V shape or an inverted C shape in an axial cross sectional view, but a pair of inclined surfaces have the same direction The effects described in the present invention can be exhibited also in the case of inclination.
　また、第３、４の実施の形態では、スプロケット３６がクローラ本体３２の内周面に形成された駆動用突起部３４を引き掛けて回転力を付与する構成に付いて説明したが、回転力を与える構成はこの構成に拘らない。更に、第３の実施の形態では、一対の接触面３６－１、３６－２に第２の実施の形態と同様に溝を形成しても良い。 Further, in the third and fourth embodiments, although the sprocket 36 has been described in the configuration in which the driving projection 34 formed on the inner peripheral surface of the crawler main body 32 is pulled to apply the rotational force, the rotational force is The configuration to give is not limited to this configuration. Furthermore, in the third embodiment, grooves may be formed in the pair of contact surfaces 36-1 and 36-2 as in the second embodiment.
　１０、６８　転輪（車輪）
　１８　溝
　２０、３０、４０、６０　ゴムクローラ
　２２、３２、４２、６２　クローラ本体
　２２－１、２２－２、３２－１、３２－２　車輪通過面
　２４、６４　芯金
　２４－１、２４－２、６４－１　案内突起部
　２４－３、３４－４　翼部
　３４、４４　駆動用突起部
　３６　スプロケット
　３８、４８　丸棒
　４２－１、４２－２　フランジ
　６６　転輪通過面
　６６－１　溝部
　６８－１　鍔部 10, 68 Wheels
18 Grooves 20, 30, 40, 60 Rubber crawlers 22, 32, 42, 62 Crawler bodies 22-1, 22-2, 32-1, 32-2 Wheel passing surfaces 24, 64 Metal bars 24-1, 24-2 , 64-1 Guide projection 24-3, 34-4 Wing 34, 44 Drive projection 36 Sprocket 38, 48 Round bar 42-1 and 42-2 Flange 66 Roller wheel passing surface 66-1 Groove 68-1 Buttocks

Claims (7)

  1. 　無端帯状のクローラ本体の内周面に形成された車輪通過面に接触して回転する車輪において、
    　回転軸の軸方向に所定の間隔を置いた一対の接触面を有し、
    　該一対の接触面は、前記軸方向断面において、互いに対向する内側縁部と非対向側の外側縁部とが、それぞれ前記回転軸からの距離を異にする傾斜面として形成されたことを特徴とする車輪。     In a wheel rotating in contact with a wheel passage surface formed on an inner circumferential surface of an endless belt-like crawler body,
    It has a pair of contact surfaces spaced apart in the axial direction of the rotation axis,
    The pair of contact surfaces is characterized in that, in the axial cross section, the inner edge facing each other and the outer edge not facing each other are formed as inclined surfaces having different distances from the rotation axis. To be a wheel.
  2. 　前記接触面と車輪側面との為す角度が鋭角となる縁部は、アールの付された形状とされたことを特徴とする請求項１に記載の車輪。 The wheel according to claim 1, characterized in that the edge at which the angle between the contact surface and the side surface of the wheel is acute is rounded.
  3. 　無端帯状のクローラ本体と、請求項１又は２に記載の車輪とを備えるゴムクローラにおいて、
    　前記車輪の一対の接触面の前記軸方向断面は、前記車輪通過面に対して非平行の傾斜した面として形成されたことを特徴とするゴムクローラ。     A rubber crawler provided with an endless belt-like crawler body and the wheel according to claim 1 or 2
    The rubber crawler characterized in that the axial cross section of the pair of contact surfaces of the wheel is formed as an inclined surface which is not parallel to the wheel passage surface.
  4. 　前記一対の接触面の前記軸方向断面は、
    　互いに対向する内側縁部から非対向側の外側縁部に向かって前記回転軸から離反する方向の傾斜面として形成されたことを特徴とする請求項３に記載のゴムクローラ。     The axial cross section of the pair of contact surfaces is:
    The rubber crawler according to claim 3, characterized in that it is formed as an inclined surface in a direction away from the rotation shaft from the inner edge facing each other to the outer edge on the non-facing side.
  5. 　無端帯状のクローラ本体と、請求項１又は２に記載の車輪とを備えるゴムクローラにおいて、
    　前記車輪通過面は、　
    　前記クローラ本体の幅方向断面において前記接触面に対して略平行に形成されたことを特徴とするゴムクローラ。     A rubber crawler provided with an endless belt-like crawler body and the wheel according to claim 1 or 2
    The wheel passage surface is
    A rubber crawler characterized in that it is formed substantially parallel to the contact surface in a widthwise cross section of the crawler main body.
  6. 　前記クローラ本体には、
    　周方向に所定の間隔を置いて、かつ前記クローラ本体の幅方向に伸長するように、芯金が埋設されており、
    　前記車輪の一対の接触面に対向する前記芯金の外表面の前記幅方向断面は、
    　前記接触面の傾斜に対して略平行となるように形成されたことを特徴とする請求項３～５の何れか１項に記載のゴムクローラ。     The crawler body is
    A core metal is embedded at predetermined intervals in the circumferential direction and extending in the width direction of the crawler body,
    The widthwise cross section of the outer surface of the cored bar facing the pair of contact surfaces of the wheel is:
    The rubber crawler according to any one of claims 3 to 5, wherein the rubber crawler is formed to be substantially parallel to the inclination of the contact surface.
  7. 　前記クローラ本体の前記車輪通過面を構成する部材は、
    　高硬度のゴム部材で成ることを特徴とする請求項３～６の何れか１項に記載のゴムクローラ。     A member constituting the wheel passage surface of the crawler body is
    The rubber crawler according to any one of claims 3 to 6, which is made of a high hardness rubber member.
PCT/JP2018/041376 2017-12-18 2018-11-07 Wheel and rubber crawler using said wheel WO2019123872A1 (en)

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JP2017241910A JP2021035781A (en) 2017-12-18 2017-12-18 Wheel and rubber crawler using the same

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03284485A (en) * 1990-03-30 1991-12-16 Bridgestone Corp Crawler device
JPH1024874A (en) * 1997-03-12 1998-01-27 Bridgestone Corp Crawler device
JP2002127955A (en) * 2000-10-23 2002-05-09 Komatsu Ltd Rubber crawler belt traveling device
JP2003252259A (en) * 2002-02-27 2003-09-10 Ohtsu Tire & Rubber Co Ltd :The Elastic crawler
JP2010042720A (en) * 2008-08-11 2010-02-25 Bridgestone Corp Structure for rubber crawler
JP2011218969A (en) * 2010-04-09 2011-11-04 Sumitomo Rubber Ind Ltd Crawler type traveling device
WO2016131140A1 (en) * 2015-02-18 2016-08-25 Camso Inc. Track system for traction of a vehicle

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03284485A (en) * 1990-03-30 1991-12-16 Bridgestone Corp Crawler device
JPH1024874A (en) * 1997-03-12 1998-01-27 Bridgestone Corp Crawler device
JP2002127955A (en) * 2000-10-23 2002-05-09 Komatsu Ltd Rubber crawler belt traveling device
JP2003252259A (en) * 2002-02-27 2003-09-10 Ohtsu Tire & Rubber Co Ltd :The Elastic crawler
JP2010042720A (en) * 2008-08-11 2010-02-25 Bridgestone Corp Structure for rubber crawler
JP2011218969A (en) * 2010-04-09 2011-11-04 Sumitomo Rubber Ind Ltd Crawler type traveling device
WO2016131140A1 (en) * 2015-02-18 2016-08-25 Camso Inc. Track system for traction of a vehicle

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