WO2011070821A1 - Dispositif mobile à chenille - Google Patents

Dispositif mobile à chenille Download PDF

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Publication number
WO2011070821A1
WO2011070821A1 PCT/JP2010/063565 JP2010063565W WO2011070821A1 WO 2011070821 A1 WO2011070821 A1 WO 2011070821A1 JP 2010063565 W JP2010063565 W JP 2010063565W WO 2011070821 A1 WO2011070821 A1 WO 2011070821A1
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WO
WIPO (PCT)
Prior art keywords
belt
crawler
claw body
drive
engagement
Prior art date
Application number
PCT/JP2010/063565
Other languages
English (en)
Japanese (ja)
Inventor
安孫子穣
石原和真
稲岡基成
小林孝
藤野摂央
Original Assignee
株式会社ブリヂストン
株式会社クボタ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社ブリヂストン, 株式会社クボタ filed Critical 株式会社ブリヂストン
Priority to CN201080055826.8A priority Critical patent/CN102791567B/zh
Priority to KR1020127014547A priority patent/KR101393906B1/ko
Priority to EP10835743.5A priority patent/EP2511163B1/fr
Publication of WO2011070821A1 publication Critical patent/WO2011070821A1/fr

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Classifications

    • 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
    • B62D55/12—Arrangement, location, or adaptation of driving sprockets
    • B62D55/125—Final drives
    • 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
    • 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
    • B62D55/12—Arrangement, location, or adaptation of driving sprockets
    • 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
    • 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
    • B62D55/244—Moulded in one piece, with either smooth surfaces or surfaces having projections, e.g. incorporating reinforcing elements

Definitions

  • the present invention embeds a cored bar in a belt body made of a rubber material at a constant pitch in the circumferential direction of the belt, and a pair of left and right cores for rolling guide from the intermediate part in the belt width direction of each cored bar to the inner peripheral surface of the belt.
  • the present invention relates to a crawler traveling device including a crawler belt provided with a gold protrusion and a drive sprocket that applies rotational power to the crawler belt in the belt circumferential direction.
  • a concave portion for engagement formed in a rubber belt main body portion between core bars embedded at a constant pitch in the circumferential direction of the crawler belt is longer in the belt width direction than in the belt circumferential direction.
  • the drive sprocket that drives the crawler belt is provided with a drive claw body that is formed long in the same direction as the longitudinal direction of the engagement recess, and the contact at the engagement point between the drive claw and the engagement recess is provided.
  • a structure having a structure in which a large driving force of a driving claw body can be transmitted to a rubber belt body of a crawler belt by increasing the area is known (see Patent Document 1).
  • JP 2009-78796 A paragraphs [0031], [0041], FIG. 1, FIG. 2, FIG. 3, FIG. 5, FIG. 6)
  • driving is performed using a driving sprocket having a concave portion for engagement formed in the belt main body portion of the crawler belt and a driving claw body formed long in the same direction as the longitudinal direction of the concave portion for engagement.
  • a driving sprocket having a concave portion for engagement formed in the belt main body portion of the crawler belt and a driving claw body formed long in the same direction as the longitudinal direction of the concave portion for engagement.
  • the crawler belt and the drive sprocket are displaced in the belt width direction, and the engagement recesses and the drive claws formed in the belt main body portion.
  • the body does not engage well.
  • the dimension of the engaging recess in the belt width direction is set to a sufficiently large size rather than the lateral width of the driving claw body to facilitate engagement.
  • the dimension in the belt width direction of the engaging recess is increased in this way, it is not stable at which position in the belt width direction the drive claw body is engaged in the engagement recess, and the drive claw body is eventually engaged.
  • the strength of the crawler belt is reduced due to the presence of an engagement recess that becomes unnecessarily long near the one end side of the recess.
  • An object of the present invention is to provide a crawler traveling device that can easily engage a crawler belt engaging recess and a driving claw of a driving sprocket, and can suppress positional deviation in the belt width direction between the crawler belt and the driving sprocket. It is to provide.
  • the crawler traveling device proposed by the present invention has the following structural features and operational effects.
  • the cored bar is embedded in the belt body made of rubber material at a constant pitch in the belt circumferential direction, and a pair of left and right cored bar projections for rolling guides project from the intermediate part in the belt width direction of each cored bar to the belt inner peripheral surface side.
  • a crawler belt is provided, and a drive sprocket is provided that applies rotational power to the crawler belt in the belt circumferential direction.
  • the crawler belt has an engaging recess that engages with the drive claw of the drive sprocket on the inner peripheral surface side.
  • the recess for engagement is located between the core bars in the belt circumferential direction and is formed longer in the belt width direction than in the belt circumferential direction, and the end surface in the belt width direction is narrower toward the inner back side. It is formed as a tapered surface.
  • the drive sprocket includes a drive claw body formed longer in the left-right direction than in the circumferential direction of the disk-shaped member.
  • the drive claw body is engaged with an engagement recess formed at a predetermined interval in the circumferential direction on the outer peripheral side of a disk-like member fitted between the left and right core metal protrusions of the crawler belt.
  • the end surface in the left-right direction of the drive claw body is formed as a tapered surface that becomes narrower toward the radially outer side.
  • the contact surface in the engaged state of the engaging recess and the driving claw body is elongated in the belt width direction, the contact area is increased, and a large drive is performed while keeping the surface pressure at the contact surface relatively low.
  • the crawler belt can be driven by force.
  • the narrow portion at the tip of the drive claw body is engaged at the point when they start to engage with each other. Since it corresponds to a wide portion on the entrance side of the joint recess, there is a relatively large difference in the same direction dimension at the engagement start portion, and it is easy to engage with each other.
  • the difference in the same direction dimension is smaller than that at the start of engagement, and the displacement in the same direction between the engaging recess and the driving claw body is suppressed. Stable power transmission is possible in the state of being performed.
  • it is not necessary to make the length of the engaging recess in the belt width direction extremely larger than the length of the driving claw in the same direction it is possible to avoid impairing the strength of the crawler belt.
  • the inclination angle of the tapered surface, which is the end surface in the belt width direction of the engaging recess, with respect to the horizontal plane is that of the tapered surface, which is the end surface in the left-right direction of the drive claw body, with respect to the horizontal plane.
  • the inclination angle is the same as the inclination angle.
  • the disk-shaped member of the drive sprocket has a width in the left-right direction of the outer peripheral side portion that enters between the left and right core metal protrusions, and is within the width of the left and right core metal protrusions.
  • the end face in the left-right direction of the drive claw body contacts the end face of the recess for engagement, the end face in the left-right direction of the disc-shaped member is a cored bar projection.
  • the relative position in the left-right direction between the end face in the left-right direction of the disk-shaped member and the drive claw body is determined so as to contact the surface on the inner end side.
  • the end surface of the drive claw body in the left-right direction first contacts the end surface of the engagement recess of the crawler belt, and the end surface of the engagement recess is compressed. After the elastic deformation, the end surface in the left-right direction of the disk-shaped member comes into contact with the inner end side surface of the cored bar protrusion.
  • the engaging recess that is compressed and deformed in contact with the end face of the drive claw body is in contact with the crawler belt end face in the left-right direction of the disk-shaped member, and driven further than the crawler belt.
  • a plurality of rollers arranged side by side in the belt circumferential direction so as to contact the inner peripheral surface of the crawler belt, and the plurality of rollers.
  • An idler wheel is provided at each of a front position and a rear position of the wheel, and a drive sprocket is disposed at an intermediate position between the front and rear idler wheels and at an upper position of the wheel.
  • the crawler traveling device configured as described above can be adapted to a so-called semi-crawler type crawler traveling device in which a drive sprocket is provided at an intermediate position between the front and rear idler wheels and at a position above the wheel. .
  • FIG. 1 Overall side view of tractor
  • FIG. 1 Partial cross-sectional view of the crawler belt in the belt circumferential direction
  • Perspective view showing a part of the drive sprocket Side view showing the outer periphery of the drive sprocket IX-IX sectional view in FIG.
  • Arrow view in FIG. Explanatory drawing which shows the relationship between a drive nail
  • the stopper guide is shown, (a) is a plan view, (b) is a side view, and (c) is a front view.
  • FIG. 1 shows a semi-crawler type tractor provided with a crawler traveling device 2 according to the present invention on the rear side of the machine body.
  • This semi-crawler type tractor is a four-wheel drive type tractor with a specification change to a semi-crawler type, and includes a pair of left and right front wheels 10 that can be steered at the front of the tractor with a cabin 1 and at the rear of the fuselage.
  • the main propulsion device includes a pair of left and right crawler traveling devices 2.
  • the rear portion of the machine body is configured to connect a tilling device, a harvesting device, or various intermediate management working devices via a three-point link mechanism (not shown).
  • the crawler travel device 2 includes a large-diameter drive spcket 3 connected to a rear axle 12 provided for driving rear wheels in a rear transmission case 11 of the tractor main unit 1. .
  • the crawler belt 6 is wound around the drive sprocket 3, the idler wheels 4, 4 provided before and after the track frame 20, and a plurality of rollers 5 arranged in parallel in the longitudinal direction of the track frame 20.
  • the drive sprocket 3 is provided at an intermediate position between the front and rear idler wheels 4 and 4 and at an upper position of the wheel 5.
  • the tread in the left-right direction of the crawler traveling device 2 is set to be substantially the same as the tread of the front wheel 10 in order to travel between the fences in the field.
  • three rolling wheels 5 are arranged in parallel in the front-rear direction, and the foremost rolling wheel 5 is attached to a track frame 20 via a fixing bracket 21 in a fixed position.
  • the two wheels 5 and 5 on the rear side of the balance 5 are pivotally attached to the support bracket 22 attached to the track frame 20 so that the middle part thereof is swingable up and down around the horizontal axis x.
  • the members 23 are arranged at both ends of the member 23 so as to be able to swing the seesaw.
  • Each of the rollers 5 and the crawler belt 6 maintains a predetermined positional relationship in the width direction of the belt and is provided with anti-separation guides 7 for preventing the crawler belt 6 from being detached from the rollers 5 at two front and rear positions.
  • the front-side locking guide 7 is connected to the lower end side of the fixing bracket 21 that fixes and supports the frontmost roller 5, and the rear-side locking guide 7 is the last side of the balance-like member 23. It is continuously provided in a state extending before and after the wheel 5 at the end position.
  • the crawler belt 6 is configured as shown in FIGS.
  • the crawler belt 6 has a core body 61 embedded in a belt body 60 formed in an endless belt shape with a rubber material at a constant pitch in the belt circumferential direction, and on the inner peripheral surface side of the belt between the core bars 61.
  • An engaging recess 62 for engaging the driving claw body 31 of the driving sprocket 3 and transmitting power to the crawler belt 6 side is formed.
  • the engaging recess 62 is located between the core bars 61 in the belt circumferential direction and is formed longer in the belt width direction than in the belt circumferential direction.
  • the end surfaces 62a on both ends of the engaging recess 62 in the belt width direction are not perpendicular to the horizontal plane when the crawler belt 6 is positioned on the horizontal plane as shown in FIG.
  • an inclined surface having a predetermined belt inclination angle ⁇ (corresponding to an inclination angle with respect to a horizontal plane).
  • the engaging recesses 62 in which the end surfaces 62a, which are inclined surfaces having the belt inclination angle ⁇ , are formed on both end sides in the belt width direction as described above are formed on the inner back side (the lower side in the figure) by the end surfaces 62a on both the left and right sides. ) Is formed on a tapered surface that becomes narrower.
  • Each cored bar 61 is provided with a pair of left and right cored bar projections 63 for guiding the wheel from the intermediate part in the belt width direction toward the inner peripheral surface of the belt.
  • the idler wheels 4 and 4 are configured to pass through.
  • a flat roller raceway surface 64 on which the rolling wheels 5 roll is formed on the inner peripheral surface of the belt main body 60 located at the laterally outer side of each cored bar protrusion 63, and the outer peripheral surface of the belt main body 60.
  • a propulsion lug 65 thicker than the thickness of the belt main body 60 excluding the cored bar projection 63 is integrally formed at a position overlapping the engaging recess 62 in the belt circumferential direction.
  • a pressure receiving block 66 is provided on the inner peripheral surface side of the belt main body 60 between the core bar 61 and the engagement recess 62.
  • the rubber pressure receiving block portion 66 is configured to transmit a driving force to the metal core bar 61 while receiving a compression action by the metal driving claw body 31 entering the engaging recess 62. Yes, it is possible to avoid the occurrence of noise by avoiding direct contact between the metal of the driving claw body 31 and the cored bar 61.
  • the pressure receiving block 66 has an inner peripheral surface of the idler wheel 4 and the inner core 61 in the state where the idler wheel 4 is in contact with the inner peripheral surface of the pressure receiving block 66. Projecting from the inner peripheral surface of the core metal 61 toward the inner peripheral surface of the belt so as to form a predetermined gap S3 for avoiding direct contact between the idler wheel 4 and the core metal 61 between the peripheral surface and the peripheral surface. Formed.
  • the metal core protrusion 63 constitutes a belt main body 60 by a metal protrusion 61 a that is integrally formed with a part of the metal core 61 and protrudes toward the inner peripheral surface of the belt.
  • the outer shape is formed substantially in a mountain shape by covering with a mountain-shaped protrusion 67 made of a rubber material. That is, the core metal protrusion 63 is formed in a mountain shape in a sectional view both in the belt width direction shown in FIG. 4 and in the belt circumferential direction shown in FIG. As shown in FIG.
  • the surface facing the inner side of the core metal protrusion 63 in the belt width direction is formed by an inclined surface that serves as a guide surface C for the idler wheel 4 and the detachment prevention guide 7.
  • the mountain-shaped cored bar projection 63 is formed in a T shape in a plan view with a top portion 63a of a line along the belt circumferential direction and a line directed inward so as to be orthogonal to the line.
  • the protrusion 67 is formed in a shape in which a recess 63 b is provided at a position located on the inner side in the belt width direction near the top 63 a on the guide surface C.
  • the drive sprocket 3 is configured as shown in FIGS. 2 and 7 to 11. That is, a large-diameter disk-shaped member 30 connected to the rear axle 12 and a drive claw body 31 provided so as to protrude outward in the radial direction from the outer peripheral edge of the disk-shaped member 30 are configured. ing.
  • the disk-shaped member 30 includes a hub plate 13 fixed to the rear axle 12 as a drive shaft, and an annular outer peripheral member 14 (corresponding to an outer peripheral side portion) bolted to the outer peripheral side of the hub plate 13.
  • the outer peripheral member 14 is configured by a combination of partial arc-shaped divided arc-shaped members 14a, 14b, and 14c that are equally divided into three in the circumferential direction.
  • the outer peripheral member 14 is thicker in the radial direction near the outer peripheral edge 16 than in the vicinity of the mounting portion 15 on the radially inner hub plate 13.
  • annular rib portion 32 is formed in the vicinity of the outer peripheral edge 16.
  • the drive claw body 31 is integrally formed by projecting outward in the radial direction of the outer peripheral edge 16 of the outer peripheral member 14 and projecting outward in the left-right direction from the rib portion 32. It is.
  • the thickness d1 of the rib portion 32 in the left-right direction is formed to be narrower than the facing distance between the left and right core metal protrusions 63 of the crawler belt 6, and the core metal protrusion 63 and the drive claw body are formed.
  • the correlation is set as follows. That is, as shown in FIG. 11A, after the end surface 31a in the left-right direction of the drive claw body 31 contacts the end surface 62a of the engagement recess 62, the end surface 62a of the engagement recess 62 is driven by the drive claw body.
  • the pressing force of 31 is applied and the rib 32 is deformed by a certain amount of compression ⁇ as shown in FIG.
  • the edge 32 a of the rib portion 32 is formed on the inner end surface 63 c of the core metal protrusion 63. Get in touch.
  • the rib portion corresponding to the end surface in the left-right direction of the disk-shaped member 30 is obtained.
  • the left and right end edges 32 a of the ribs 32 are in contact with the inner end surface 63 c of the core metal protrusion 63. The position has been determined.
  • a first gap LP1 exists between the distance LP1-2 to the contact point P1 of 31a. Further, in the contact location P2, the distance LP2-1 from the center line CL to the contact location P2 of the inner end surface 63c of the cored bar 63, and the edge of the rib portion 32 from the center line CL. A second gap LP2 exists between the distance LP2-2 to the contact point P2 at 32a. Then, the second gap LP2 is set larger than the first gap LP1 by an amount corresponding to the compression amount ⁇ when the end face 62a of the engaging recess 62 is compressed and deformed by the pressing force of the driving claw body 31.
  • the end surface 62 a of the engaging recess 62 is compressed and deformed by the pressing force of the driving claw body 31, and the end edge 32 a of the rib portion 32 is the surface on the inner end side of the core metal protrusion 63. There is a time lag until the amount of movement necessary to contact 63c is reached.
  • the drive claw body 31 projects in the lateral direction (left-right direction) perpendicular to the plate surface of the disk-shaped member 30, thereby causing the belt width of the engaging recess 62.
  • the length is slightly shorter than the length in the direction, and the length in the left-right direction is approximately the same as the length of both the left and right cored bar protrusions 63.
  • the end surface 31a in the left-right direction of the driving claw body 31 is in a state in which the outer end edge of the driving claw body 31 is positioned on the horizontal plane.
  • End surfaces 31a which are inclined surfaces having the claw inclination angle ⁇ , are formed on both left and right sides of the drive claw body 31, and the drive claw body 31 is located on the outer side in the radial direction by the end surfaces 31a on both the left and right sides. It is formed on a tapered surface that becomes narrow.
  • the claw inclination angle ⁇ is set to the same angle as the belt inclination angle ⁇ formed on the end surface 62a in the belt width direction of the engaging recess 62.
  • a front-facing surface 31b (a surface on the side where the driving force is applied to the crawler belt 6 in the forward direction of the machine body) and a rearward surface 31c (a crawler belt 6 in the backward direction of the machine body) that are positioned forward and backward in the circumferential direction of the drive claw body 31.
  • the surface to which the driving force is applied is generally in the direction along the normal line from the center of rotation of the disk-shaped member 30, but the circumferential width d2 at the portion (base side) slightly closer to the center of rotation is the center of rotation.
  • the taper surface has a tapered shape that is wider than the circumferential width d3 of the outer portion (nail tip side) away from the taper and is slightly narrower toward the radially outer side of the drive claw body 31.
  • a partial stealing portion 33 is provided on the end surface 31a of the driving claw body 31 to reduce the weight of the entire disk-shaped member 30.
  • the detachment prevention guide 7 is configured as shown in FIGS. 2, 12, 13 (c), and 14. That is, it is continuously provided on the track frame 20 so as to be positioned between the left and right cored bar projections 63, 63 at the position where the front end wheel 5 and the rear end wheel 5 are provided.
  • the detachment prevention guides 7 connected and fixed to the fixed bracket 21 and the balance-like member 23 connected to the support bracket 22 are the same in the front and rear.
  • the detachment prevention guide 7 is formed in a boat shape as a whole in a side view, and the balance-like member 23 connected to the fixed bracket 21 or the support bracket 22 at two positions on the front and rear sides thereof.
  • mounting portions 72, 72 having screw holes 71, 71 for connecting and fixing to.
  • the position which becomes the lowermost end of the locking guide 7 is a perpendicular line y1 from the rotation center p of the wheel 5 shown in FIG. 2 and FIG. It is a crossing position.
  • the lowermost position of the stopper guide 7 is in a state closest to the inner peripheral surface of the crawler belt 6 between the left and right core metal projections 63, 63.
  • the width L1 in the width direction of the belt at the location intersecting the perpendicular line y1 is the contact at the upper portion of the core metal projection 63 at the location where the center line y2 in the belt circumferential direction of the core metal projection 63 on the crawler belt 6 side exists. It is set to be larger than the lateral width L2 at the location P3.
  • the width L1 of the contact position in the belt lateral width direction of the slip-off preventing guide 7 is a linear portion in the belt circumferential direction (front-rear direction) of the slip-off preventing guide 7.
  • the front and rear ends of the stopper guide 7 are tapered in a plan view as shown in FIG. 12A before and after the linear portion L3. In the side view, as shown in FIG. 12B, the front and rear ends are warped upward.
  • the linear portion L3 of the locking guide 7 near the portion intersecting the perpendicular y1, there is an orthogonal lower edge portion 73 orthogonal to the perpendicular y1 as shown in FIG. 12 (b).
  • An orthogonal lower edge range L4 is formed, and among the linear portions L3 before and after that, the front lower edge portion 74 in front of the orthogonal lower edge range L4 is formed in a slightly upward shape, and the orthogonal lower edge The rear lower edge portion 75 behind the range L4 is formed in a slightly rearwardly rising shape.
  • the lower edge guide 7 is formed in this way. That is, as shown in FIG. 2, when it is assumed that all the wheels 5 are located on a flat ground, the front end side and the rear end of the crawler traveling device 2 with respect to the lower tangent line to all the wheels 5. The lower edge of the side idler wheels 4, 4 is located higher. For this reason, the crawler belt 6 is stretched slightly forward on the front side of the frontmost roller 5 and slightly lifted on the rear side of the rearmost roller 5, so that This is to maintain a necessary gap between the lower edge of the stop guide 7 and the inner peripheral surface of the crawler belt 6.
  • the front end side and the rear end side of the slip prevention guide 7 are formed in a tapered shape in a plan view, as described above, the guiding action by the slip prevention guide 7 having a wide width L1 in the belt lateral width direction is smooth. This is to make it happen. Furthermore, as described above, the front and rear ends of the slip prevention guide 7 are formed in a shape that warps upward in addition to the tapered shape in plan view. This is in order to avoid direct contact.
  • the anti-separation guide 7 configured as described above has a reference posture shown in FIG. 14A (all the rollers 5 are in contact with the roller raceway surface 64 and the crawler belt 6 receives an average pressure as a whole. (Traveling posture in the state) is sufficiently between the position that is the lowermost end of the stopper guide 7 and the inner peripheral surface of the crawler belt 6 (the inner peripheral surface of the pressure receiving block portion 66 in this embodiment).
  • the relative height position between the contact surface of the wheel 5 and the lower surface of the slip-off preventing guide 7 is set so as to have a large distance S1.
  • the crawler belt 6 is partially compressed or bent, and the anti-separation guide 7 is in a state of relatively approaching the inner peripheral surface of the crawler belt 6.
  • the lateral width L1 of the stopper guide 7 is set to be larger than the lateral width L2 in the belt lateral width direction at the contact point P3 at the upper portion of the core metal projection 63 on the crawler belt 6 side.
  • the contact point P3 with the contact point P3 of the stopper guide 7 in the upper part of the core metal protrusion 63 is the drive in the core metal protrusion 63 shown in FIG. 11B and FIG.
  • the sprocket 3 is set at a position away from the contact point P2 with the contact point P2 at the edge 32a in the left-right direction of the rib portion 32 of the sprocket 3. This prevents the rubber material covering the outer surface of the cored bar protrusion 63 from coming into contact with both the rib portion 32 of the drive sprocket 3 and the anti-separation guide 7 at the same location, so that the rubber material It is for suppressing that it wears out.
  • the proximity restricting portion A of the locking guide 7 is a contact portion at the upper portion of the guide surface C of the cored bar projection 63 of both side surfaces B and B having a slanted slope of the locking guide 7.
  • the both side surfaces B, B are slightly inclined from the taper angle formed by the inclination of the guide surfaces C, C of the left and right cored bar projections 63.
  • the inclination angle is set so as to obtain a large taper. Therefore, even if the locking guide 7 is relatively strong and fits between the left and right cored bar projections 63, 63, the contact area at the proximity restricting portion A is relatively small, and the situation where the locking guide 7 is strongly bitten and is difficult to come off. Easy to avoid.
  • the idler wheels 4 and 4 are free to play between the left and right cored bar projections 63 and 63 and in contact with the inner peripheral surface of the crawler belt 6. Rotate. At this time, the outer peripheral surfaces of the idler wheels 4 and 4 are rotated in contact with the inner peripheral surface side of the pressure receiving block portion 66 of the crawler belt 6 as described above. It can be avoided. The both side surfaces of the idler wheels 4 and 4 may come into contact with the metal portions of the left and right cored bar protrusions 63 and 63, but at this point, the idler wheels 4 and 4 and the crawler belt 6 are almost relative to each other. Since it rotates without moving, even if the metal parts touch each other, the noise does not become so loud at this point, and the generation of noise can be suppressed.
  • the proximity restricting portion A is not limited to the one based on the setting of the lateral width L2 of the contact point P3 of the stopper guide 7 with respect to the core metal protrusions 63, 63 as described in the embodiment.
  • a portion that does not contact in the reference posture but contacts with the maximum protruding portion of the cored bar protrusions 63 and 63 in the maximum proximity posture is formed, and the detachment prevention guide 7 further covers the inner circumference of the crawler belt 6. You may comprise so that space
  • the stopper guide 7 is not limited to one having two front and rear structures as described in the embodiment. For example, only one of the front and rear is provided, or a long disconnection from the front end side to the rear end side is provided. A stop guide 7 may be provided.
  • the both side surfaces B and B having a tapered shape of the locking guide 7 are connected to the guide surfaces C and C of the left and right metal core protrusions 63.
  • the inclination angle is set so that the taper is slightly larger than the angle of the taper formed by the inclination, the present invention is not limited to this, and both sides of the anti-skid guide 7 have a constricted inclination.
  • the taper angle formed by the inclination of the surfaces B and B and the guide surfaces C and C of the left and right cored bar protrusions 63 may be set to the same angle. When the same angle is set in this way, the area near the contact point P3 can be widened to reduce the surface pressure per unit area, which is advantageous in that the degree of wear at the contact point P3 can be reduced. There is.
  • the claw inclination angle ⁇ of the driving claw body 31 is set to the same angle as the belt inclination angle ⁇ at the end surface 62a in the belt width direction of the engaging recess 62, but the present invention is not limited to this.
  • the angle ⁇ may be set larger than the belt inclination angle ⁇ , or vice versa.
  • the claw inclination angle ⁇ with respect to the horizontal plane is set to be larger than the belt inclination angle ⁇ , there are the following advantages.
  • claw body 31 side is a big inclination angle with respect to a horizontal surface rather than the inclination angle of the taper surface by the side of the recessed part 62 for engagement.
  • the narrow portion at the tip of the drive claw body 31 corresponds to the wide portion on the entrance side of the engagement recess 62. Therefore, when the inclination angles of the tapered surfaces of the engaging recess 62 and the drive claw body 31 with respect to the horizontal plane are the same, or the inclination angle on the engagement recess 62 side is the inclination angle on the drive claw body 31 side.
  • the difference between the distance from the center position of the engagement recess 62 in the belt width direction to the taper surface and the distance from the center position of the drive claw body 31 in the same direction to the taper surface are compared with each other.
  • the narrow portion at the tip of the drive claw body 31 corresponds to the wide portion on the entrance side of the engagement recess 62, so that a larger difference can be made.
  • the possibility of disengagement from the entrance side of the engaging recess 62 can be reduced and the engagement can be further facilitated.
  • the crawler traveling device of the present invention can be used as a propulsion device for various vehicles such as a combine and a construction machine in addition to the tractor shown in the embodiment.
  • crawler traveling device 3 drive sprocket 5 wheel 6 crawler belt 30 disk-like member 31 drive claw body 31a end face 32 rib part 32a edge 60 belt body 61 cored bar 62 engaging recess 62a end face 63 cored bar projection 63c on the inner end side
  • Surface 64 Roller raceway surface ⁇ Claw inclination angle (inclination angle with respect to horizontal plane) ⁇ Belt inclination angle (Inclination angle with respect to horizontal plane) d1 interval

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Handcart (AREA)
  • Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
  • Harvester Elements (AREA)

Abstract

L'invention porte sur une courroie de chenille (6) possédant des parties creuses (62) pour mise en prise, qui sont formées dans la surface circonférentielle intérieure de la courroie de chenille, et qui entrent en prise avec des crampons d'entraînement (31) d'une roue dentée motrice. Des faces terminales (62a) de chaque partie creuse (62) destinées à entrer en prise dans la direction de largeur de la courroie sont effilées de telle sorte que la largeur de la partie creuse correspondante se rétrécit en se rapprochant du fond. La roue dentée motrice comprend les crampons d'entraînement (31) placés sur des circonférences extérieures d'un élément en forme de disque (30) logé dans un espace compris entre des saillies gauche et droite de barre évidée (63). La longueur des crampons d'entraînement (31) dans une direction gauche-droite de l'élément en forme de disque (30) est plus grande que dans la direction circonférentielle de l'élément en forme de disque (30) et des faces terminales (31a) de chaque crampon d'entraînement (31), dans la direction gauche-droite, sont effilées de telle sorte que la largeur du crampon d'entraînement correspondant se rétrécit en se rapprochant de la partie extrême extérieure dans la direction radiale.
PCT/JP2010/063565 2009-12-10 2010-08-10 Dispositif mobile à chenille WO2011070821A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201080055826.8A CN102791567B (zh) 2009-12-10 2010-08-10 履带式行进装置
KR1020127014547A KR101393906B1 (ko) 2009-12-10 2010-08-10 크롤러 주행 장치
EP10835743.5A EP2511163B1 (fr) 2009-12-10 2010-08-10 Dispositif mobile à chenille

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009280368A JP5843422B2 (ja) 2009-12-10 2009-12-10 クローラ走行装置
JP2009-280368 2009-12-10

Publications (1)

Publication Number Publication Date
WO2011070821A1 true WO2011070821A1 (fr) 2011-06-16

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JP (1) JP5843422B2 (fr)
KR (1) KR101393906B1 (fr)
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WO (1) WO2011070821A1 (fr)

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JP5444126B2 (ja) * 2010-05-31 2014-03-19 株式会社クボタ クローラ走行装置
JP5444080B2 (ja) * 2010-03-29 2014-03-19 株式会社クボタ クローラ走行装置
JP5444081B2 (ja) * 2010-03-29 2014-03-19 株式会社クボタ クローラ走行装置
JP5657333B2 (ja) * 2010-10-13 2015-01-21 株式会社ブリヂストン ゴムクローラ組込体
US9352793B2 (en) * 2013-03-12 2016-05-31 Caterpillar Global Mining Llc Slide shoe for undercarriage frame assembly
JP6677137B2 (ja) * 2016-09-23 2020-04-08 株式会社ダイフク 物品搬送車
USD941886S1 (en) 2019-11-21 2022-01-25 Caterpillar Inc. Slider

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JP2000118450A (ja) * 1998-10-09 2000-04-25 Ohtsu Tire & Rubber Co Ltd :The 弾性クローラ用芯体及び弾性クローラ
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JP2009061829A (ja) * 2007-09-04 2009-03-26 Bridgestone Corp ゴムクローラおよびそのゴムクローラ用芯金
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Also Published As

Publication number Publication date
CN102791567B (zh) 2015-02-04
JP2011121463A (ja) 2011-06-23
EP2511163A1 (fr) 2012-10-17
CN102791567A (zh) 2012-11-21
JP5843422B2 (ja) 2016-01-13
EP2511163A4 (fr) 2015-05-27
KR101393906B1 (ko) 2014-05-12
KR20120080251A (ko) 2012-07-16
EP2511163B1 (fr) 2016-11-09

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