WO2017017957A1 - 弾性クローラおよび弾性クローラ装置 - Google Patents
弾性クローラおよび弾性クローラ装置 Download PDFInfo
- Publication number
- WO2017017957A1 WO2017017957A1 PCT/JP2016/003492 JP2016003492W WO2017017957A1 WO 2017017957 A1 WO2017017957 A1 WO 2017017957A1 JP 2016003492 W JP2016003492 W JP 2016003492W WO 2017017957 A1 WO2017017957 A1 WO 2017017957A1
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- WO
- WIPO (PCT)
- Prior art keywords
- crawler
- main body
- lugs
- lug
- width direction
- Prior art date
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Classifications
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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
- B62D55/244—Moulded in one piece, with either smooth surfaces or surfaces having projections, e.g. incorporating reinforcing elements
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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
- B62D55/20—Tracks of articulated type, e.g. chains
- B62D55/202—Wheel engaging parts; Wheel guides on links
-
- 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
- B62D55/14—Arrangement, location, or adaptation of rollers
Definitions
- the present invention relates to an elastic crawler and an elastic crawler device.
- the elastic crawler described in Patent Document 1 further includes a lug formed only on a portion of the outer peripheral surface of the rubber crawler body that overlaps with a portion in which the wing portion of the core metal is embedded in the thickness direction, and the thickness of the hollow portion.
- An object of the present invention is to provide an elastic crawler and an elastic crawler device that can achieve both low fuel consumption and good riding comfort.
- An elastic crawler has an endless belt-like main body having elasticity and a pair of wings extending from the inner side in the width direction of the main body to the outer side in the width direction of the main body, and is spaced in the circumferential direction of the main body.
- a roller rolling surface formed on the inner peripheral surface of the main body so as to extend in the circumferential direction of the main body, and the blade portions adjacent to each other in the circumferential direction of the main body.
- the elastic crawler according to the present invention can achieve both low fuel consumption and good riding comfort.
- connection lug that is formed between the lugs adjacent in the circumferential direction of the main body and connects the lugs can be provided.
- the volume of the lug per piece increases, and the durability of the lug can be improved.
- a gap formed by the connecting lugs and the lugs adjacent to each other in the circumferential direction of the main body is formed at a position where the connecting lug overlaps the concave portion and the thickness direction of the main body.
- connection lug is formed by the connection lug and the lugs adjacent to each other in the circumferential direction of the main body at a position overlapping with the rolling wheel rolling surface and the core metal in the thickness direction of the main body.
- a gap may be formed to be formed. In this case, the ride comfort can be improved while improving the durability of the lugs.
- An elastic crawler device includes any one of the above-described elastic crawlers, and a driving wheel, a driven wheel, and a roller wheel around which the elastic crawler is wound. According to the elastic crawler device of the present invention, it is possible to achieve both low fuel consumption and good riding comfort.
- an elastic crawler and an elastic crawler device that can achieve both low fuel consumption and good riding comfort.
- FIG. 2 is a partial perspective view of the elastic crawler in FIG. 1 as a partial cross section, with a sprocket and an idler virtually shown from the inner peripheral surface side of the elastic crawler.
- FIG. 4 is a sectional view taken along line XX in FIG. 3.
- FIG. 4 is a YY sectional view of FIG. 3.
- FIG. 5 is a side view partially showing the elastic crawler of FIG. 1 in a ZZ cross section of FIG. 4.
- reference numeral 1 denotes an elastic crawler according to an embodiment of the present invention.
- the elastic crawler 1 includes an endless belt-like crawler main body (main body) 2 having elasticity.
- the crawler main body 2 is an annular member formed in a belt shape with the direction of the symbol W as the crawler width direction and the direction of the symbol L as the crawler circumferential direction.
- the crawler body 2 is made of a rubber material.
- the symbol W is the width direction of the crawler body 2
- the width direction of the crawler body 2 hereinafter also referred to as “crawler width direction” is synonymous with the width direction of the elastic crawler 1.
- Reference numeral L denotes the circumferential direction of the crawler body 2, and the circumferential direction of the crawler body 2 (hereinafter also referred to as “crawler circumferential direction”) is synonymous with the circumferential direction of the elastic crawler 1.
- a reference D shown in FIG. 5 and the like is the thickness direction of the crawler body 2, and the thickness direction of the crawler body (hereinafter also referred to as “crawler thickness direction”) is synonymous with the thickness direction of the elastic crawler 1. .
- the elastic crawler 1 includes a plurality of core bars 3 as indicated by broken lines in FIGS. 3 and 4.
- a plurality of core bars 3 are embedded in the crawler main body 2 at intervals in the crawler circumferential direction. Further, as shown in FIG.
- the cored bar 3 is a central part that is located at the center of the crawler body 2 in the width direction (hereinafter, also simply referred to as “the center in the width direction”) and is the center part of the cored bar 3
- a pair of wing portions 3b extending from the inner side in the width direction of the crawler main body 2 (hereinafter also simply referred to as “inner side in the width direction”) to the outer side in the width direction (hereinafter also simply referred to as “outer side in the width direction”) across the 3a. have.
- a pair of protrusions 3 c are provided at the center 3 a of the cored bar 3 so as to be spaced apart in the width direction.
- the main cord layer 11 is disposed on the lower side (the outer peripheral surface side of the crawler body 2) of the wing part 3 b of the cored bar 3.
- the main cord layer 11 is formed, for example, by arranging a plurality of steel cords that circulate around the crawler main body 2 at intervals in the width direction.
- a roller rolling surface 2 a that extends in the crawler circumferential direction and circulates around the crawler main body 2 is formed on the inner circumferential surface of the crawler main body 2.
- a pair of roller rolling surfaces 2a are formed at intervals in the width direction on the center side in the width direction of the inner peripheral surface of the crawler body 2.
- Each of the wheel rolling surfaces 2a forms a flat surface as shown in FIG. 2 and FIGS.
- the inner peripheral surface of the crawler body 2 has a recess 2 b extending between the wing portions 3 b of the cored bar 3 adjacent in the crawler circumferential direction from the wheel rolling surface 2 a to the outer side in the width direction. Formed at intervals in the direction.
- the concave portion 2 b is a portion where the wing portion 3 b of the core metal 3 of the crawler main body 2 is embedded as viewed in the circumferential direction of the crawler main body 2 (hereinafter, “core metal wing portion”). (Also referred to as “embedded portion”) 2c.
- core metal wing portion Also referred to as “embedded portion”
- each of the recesses 2b extends in the crawler circumferential direction of the recess 2b toward the width direction edge 2e of the crawler body 2 (the recess 2b
- the crawler circumferential width) has an enlarged shape.
- the bottom surface 2 b 1 of the recess 2 b is directed toward the outer peripheral surface of the crawler body 2 as it goes toward the edge 2 e in the width direction of the crawler body 2 in the crawler thickness direction. It is inclined.
- the inner peripheral surface of the crawler body 2 is formed with an engaging portion 2 d described later at the center in the crawler width direction and spaced in the crawler circumferential direction.
- the engaging portion 2d is formed in a line with the concave portion 2b formed on the inner peripheral surface of the crawler body 2 in the crawler width direction. That is, the engaging portion 2d is formed at the same position as the concave portion 2b formed on the inner peripheral surface of the crawler body 2 in the crawler circumferential direction.
- the elastic crawler 1 includes a plurality of composite lugs 4.
- the composite lug 4 is made of a rubber material.
- the composite lug 4 can be vulcanized and bonded to the outer peripheral surface of the crawler body 2 and can be formed integrally with the crawler body 2.
- Each of the composite lugs 4 is formed on the outer peripheral surface of the crawler body 2.
- two composite lugs 4 are arranged at intervals in the crawler width direction with the engaging portion 2 d interposed therebetween.
- the plurality of composite lugs 4 arranged on both sides in the crawler width direction with the engaging portion 2d interposed therebetween are arranged at intervals in the crawler circumferential direction.
- the plurality of composite lugs 4 form gaps C 1 extending in the crawler width direction between the composite lugs 4 adjacent in the crawler circumferential direction.
- the composite lug 4 has a pair of lugs 4a adjacent in the crawler circumferential direction.
- the pair of lugs 4a are arranged at intervals in the crawler circumferential direction.
- the outermost edge 2 a 1 in the width direction of the roller rolling surface 2 a formed on the inner peripheral surface of the crawler body 2 is indicated by a two-dot chain line.
- the lug 4a has a shape extending in the crawler width direction so as to be displaced in the crawler circumferential direction toward the outer side in the crawler width direction in plan view as shown in FIG.
- the inner end portion 4a 1 and the outer end portion 4a 2 of each lug 4a will be placed at a position shifted in the crawler circumferential direction.
- the composite lug 4 is formed between the lugs 4a adjacent to each other in the crawler circumferential direction, and includes a connecting lug 4b that connects the lugs 4a to each other.
- the connecting lug 4 b is formed by two lugs 4 a adjacent to each other in the crawler circumferential direction and a connecting lug 4 b connecting these in the crawler circumferential direction at a position overlapping the concave portion 2 b.
- notch C 2 is provided with it is to be formed is.
- the notch C 2 is formed between the core bars 3 adjacent in the crawler circumferential direction so as to be opened to the outside in the crawler width direction.
- FIG. 3 shows that is formed between the core bars 3 adjacent in the crawler circumferential direction so as to be opened to the outside in the crawler width direction.
- the composite lug 4 has two lugs 4a adjacent to each other in the crawler circumferential direction at positions overlapping with the rolling wheel rolling surface 2a and the core metal 3 in the crawler thickness direction.
- opening C 3 which is formed by the connecting lug 4b is provided so as to form a.
- the opening C 3 is formed on the cored bar 3 adjacent in the crawler circumferential direction so as to be opened to the center side in the crawler width direction.
- the opening C 3 formed between the inner ends 4 a 1 of the pair of lugs 4 a of the composite lug 4 is the gap C 1 formed between the inner ends 4 a 1 of the composite lug 4.
- the gap in the crawler circumferential direction at the same position in the crawler width direction is configured as a narrow gap, it may be a wide gap.
- the two composite lugs 4 arranged on both sides in the crawler width direction are crawler circumferentially with reference to the engaging portion 2d formed on the inner peripheral surface of the crawler body 2. It is arranged at a position shifted in the direction. Specifically, as shown in FIG. 3, the inner end 4a 1 of the lug 4a on one side of the crawler circumferential direction of the right composite lug 4 and the other side of the left composite lug 4 in the crawler circumferential direction. The inner end 4a 1 of the lug 4a is arranged in a line with the engaging portion 2d of the crawler body 2 in the crawler width direction W.
- the gap C 1 and the notch C 2 formed between the outer end portions 4a 2 of the lugs 4a are respectively recessed portions 2b formed on the inner peripheral surface of the crawler body 2 ( In this embodiment, at least a part of the recess 2b in the crawler width direction) overlaps with the crawler thickness direction, and the crawler thickness is locally reduced. As a result, the gap C 1 and the notch C 2 cooperate with the recess 2 b formed on the inner peripheral surface of the crawler body 2 to make the elastic crawler 1 easily bent.
- each lug 4a (in this embodiment, at least a part of the inner end 4a 1 in the crawler width direction) is in the direction of the rolling wheel rolling surface 2a and the crawler thickness as shown in FIG. Duplicate.
- the inner end portion 4a 1 of the lugs 4a respectively, for supporting the rolling wheel rotation surface 2a.
- FIG. 2 shows a basic configuration of an elastic crawler device 10 according to an embodiment of the present invention, in which the elastic crawler 1 described above is a constituent element.
- the elastic crawler device 10 includes the above-described elastic crawler 1, and a driving wheel, a driven wheel, and a wheel on which the elastic crawler 1 is wound.
- reference numeral 20 denotes a sprocket or idler constituting the elastic crawler device 10.
- the sprocket 20 constitutes the driving wheel
- the idler 20 constitutes the driven wheel.
- the sprocket 20 has its teeth 21 engaged with the engaging portion 2 d to drive the elastic crawler 1, and the idler 20 is driven by the elastic crawler 1 driven by the sprocket 20.
- the engaging portion 2d is configured by a through-hole penetrating in the crawler thickness direction, but may be a recessed portion without penetrating in the crawler thickness direction.
- Numeral 30 is a wheel constituting the elastic crawler device 10.
- the roller 30 rolls on the roller rolling surface 2 a formed on the inner peripheral surface of the crawler main body 2 in the elastic crawler 1.
- the wheel 30 has two wheel 31 connected via a shaft 32.
- the elastic crawler 1 extends between the wings 3b of the cored bar 3 adjacent to the inner peripheral surface of the crawler main body 2 in the crawler circumferential direction from the roller rolling surface 2a to the outer side in the crawler width direction.
- a plurality of recesses 2b are formed. Each of the recesses 2b is formed in a portion where there is no cored bar 3 extending in the crawler width direction with an interval in the crawler circumferential direction.
- the wing portion 3 b of the core metal 3 from the inner end portion 4 a 1 overlapping with the rolling wheel rolling surface 2 a and the crawler thickness direction between the core metals 3 adjacent in the crawler circumferential direction.
- a plurality of lugs 4a extending in the crawler width direction to the inner end portion 4a 2 overlapping with the embedded portion in the crawler thickness direction are formed.
- the elastic crawler 1 has a lug between the core bars 3 adjacent to each other in the crawler circumferential direction, in other words, at the inner side in the crawler width direction at a portion where the core bar 3 extending in the crawler width direction does not exist. While the inner end 4a 1 of 4a is disposed, outside the crawler width direction, between the outer ends 4a 2 of the lugs 4a adjacent in the crawler circumferential direction, that is, between the composite lugs 4 adjacent in the crawler circumferential direction Among the gaps C 1 formed between them, a gap C 1 (including a notch C 2 formed by the connecting lug 4b in the present embodiment) disposed on the outer side in the crawler width direction is disposed.
- the gap C 1 and the notch C 2 formed by the lug 4a formed on the outer peripheral surface of the crawler main body 2 and the concave portion 2b formed on the inner peripheral surface of the crawler main body 2 in the crawler thickness direction are formed on the outer side in the crawler width direction.
- the inner end portion 4a 1 of the lug 4a is arranged at a position overlapping the concave portion 2b formed on the inner peripheral surface of the crawler main body 2 in the crawler thickness direction, whereby the elastic crawler 1 is
- the spring between the core bars 3 adjacent to each other in the crawler circumferential direction is hardened while being easy to bend (in the part where the inner end 4a 1 of the lug 4a is arranged, the cored bar blade embedded part 2c and the core Since the spring difference between the gold wing portion embedded portion 2c is reduced), the vibration during traveling is suppressed, so that the ride comfort is improved.
- the elastic crawler 1 it is possible to achieve both reduction of the bending resistance of the elastic crawler 1 and suppression of vibrations, and thus, it is possible to achieve both low fuel consumption and good riding comfort.
- connection lug 4b is formed between the lugs 4a adjacent to each other in the crawler circumferential direction and connects the lugs 4a to each other, compared to the single lug 4a.
- the volume of each lug increases, and as a result, the durability of the lugs can be improved.
- the connecting lug 4b is connected to the recesses 2b formed on the inner peripheral surface of the crawler body 2 and the lugs 4a adjacent to each other in the crawler thickness direction at positions overlapping the crawler thickness direction.
- notched portion C 2 which is formed is provided so as to be formed by connecting lugs 4b.
- the notch C 2 formed in the composite lug 4 adjacent in the crawler circumferential direction exists as a gap C 1 formed between the lugs 4 a adjacent in the crawler circumferential direction, and the inner circumference of the crawler main body 2
- the rigidity of the lug 4a is increased as the rigidity of the entire composite lug 4, and the crawler main body 2 (elastic crawler 1) is easily bent. It is possible to further reduce fuel consumption while improving durability.
- the connecting lug 4b is in the crawler circumferential direction at a position where the connecting lug 4b overlaps with the rolling wheel rolling surface 2a formed on the inner peripheral surface of the crawler body 2 and the core metal 3 in the crawler thickness direction. It is provided such that the open portion C 3 which is formed by lugs 4a between the connecting lugs 4b adjacent is formed. In this case, since the spring difference between the portion where the core metal 3 is embedded and the portion where the core metal 3 does not exist can be reduced, the ride comfort can be improved while improving the durability of the lug. .
- the elastic crawler device 10 according to the present embodiment, it is possible to achieve both low fuel consumption and good riding comfort.
- an elastic crawler and an elastic crawler device that can achieve both low fuel consumption and good riding comfort.
- the elastic crawler 1 includes a lug on the outer peripheral surface side of the crawler main body 2 that protrudes from the outer peripheral surface of the crawler main body 2 and surrounds a predetermined region R that overlaps with the cored bar 3 as viewed in the crawler thickness direction.
- the “go” includes not only the case where the entire region R is surrounded, but also the case where only one of the regions R is open. Specifically, a case where the region R is surrounded over half a circle or more, a case where the region R is surrounded over 2/3 times or more, and the like can be mentioned. In the present embodiment, for example, as shown in FIGS.
- the lugs are arranged on both sides of the crawler width direction of the crawler main body 2 with the center of the core metal 3 in the crawler width direction as viewed in the crawler thickness direction. And a central lug (lug) 5 that overlaps the center of the cored bar 3 in the crawler width direction as viewed in the crawler thickness direction.
- the central lug 5 is made of rubber.
- Each of the central lugs 5 can be vulcanized and bonded to the outer peripheral surface of the crawler main body 2, and can be formed integrally with the crawler main body 2, for example.
- the wing part 3b of the cored bar 3 indicated by the broken line in FIG. 3 is arranged at a position overlapping the cored bar wing part embedded part 2c in the crawler thickness direction view.
- the position overlaps with the concave portion 2b formed on the inner peripheral surface of the crawler body 2 in the crawler thickness direction view. Is arranged.
- the crawler width direction of the connecting lug 4b a central-side portion and the portion including the inner end 4a 1 of the lugs 4a, also in the crawler width direction outer side than the connecting lug 4b
- the part is a part including the outer end 4a 2 of the lug 4a.
- the composite lug 4 includes a portion including the inner ends 4 a 1 of the two lugs 4 a at a position overlapping with the rolling wheel rolling surface 2 a and the core metal 3 in the crawler thickness direction view.
- the ground contact surface 4f of the composite lug 4 is configured as the same plane by raising the two lugs 4a and the connecting lugs 4b at the same height in the crawler thickness direction. .
- the opening portion C 3 formed between the inner ends 4 a 1 of the pair of lugs 4 a of the composite lug 4 is larger than the gap C 1 formed between the crawler circumferential directions of the composite lug 4.
- the crawler circumferential direction gap at the same position in the width direction of the crawler body 2 is configured as a narrow gap, but it is also possible to make a wide gap.
- the center lug 5 overlaps with the center of the core metal 3 in the crawler width direction as viewed in the crawler thickness direction, and among the composite lugs 4, the inner end portions 4a 1 of the two lugs 4a adjacent in the crawler circumferential direction. They are linked together.
- a position that overlaps with the core metal 3 by the crawler thickness direction when viewed, a portion including the inner end 4a 1 of the two lugs 4a, a connecting lug 4b, a central lug 5, in surrounded Region (predetermined region) R is formed.
- the central lug 5 R is located closer to the ground contact surface 4f of the composite lug 4 than the bottom surface 6 of the R, and is raised to the same position as the ground contact surface 4f of the composite lug 4 or closer to the core 3 than the ground contact surface 4f.
- the maximum raised surface 5a of the central lug 5 is formed at the position.
- the center lug 5 has the open part side inclined surface 5b which approaches the metal core 3 as it goes to the largest raised surface 5a and goes to the crawler width direction outer side.
- the region R is a region surrounded by the ground contact surface 4f of the composite lug 4 and the maximum raised surface 5a of the central lug 5 and having the deepest portion as the bottom surface 6.
- the maximum raised surface 5a is lower in height than the ground contact surface 4f of the composite lug 4 and opens only one of the regions R in the crawler thickness direction view.
- the direction in which the opening C 3 opens the region R is a direction along the crawler width direction, more specifically, toward the center side in the crawler width direction (inside the crawler width direction) along the crawler width direction.
- the opening C 3 is formed on the cored bar 3 as viewed in the crawler thickness direction so as to open to the center side in the crawler width direction.
- the pair of composite lugs 4 arranged on both sides in the crawler width direction are mutually in the crawler circumferential direction with reference to the engaging portion 2 d formed on the crawler body 2. They are arranged at positions shifted by an interval between the two engaging portions 2d. Specifically, as shown in FIG.
- the right side of the composite lug 4 figures, two on one side of the crawler circumferential direction of the inner end 4a 1 of the lugs 4a and the inner end portion 4a 1, the left side of the drawing composite lug 4, the inner end portion 4a 1 of the crawler circumferential direction of the other side of the inner end 4a 1 of the two lugs 4a is, in the crawler width direction, the engaging portion 2d of the crawler body 2 and to be in a line Is arranged.
- a gap C formed between the composite lugs 4 adjacent in the crawler circumferential direction on the left and right sides of the engaging portion 2d. 1 and the region R having the opening C 3 are arranged so as to face each other.
- the gaps C 1 formed between the composite lugs 4 adjacent in the crawler circumferential direction are respectively connected to the maximum raised portion 5 a of the central lug 5, and the cored bar 3 toward the outer side in the crawler width direction. It has the groove side inclined surface 5c approaching.
- the gap-side inclined surface 5 c is connected to the bottom surface 6.
- the groove-side inclined surface 5c can be inclined at the same or different angle as the opening portion-side inclined surface 5b.
- the bottom surface 6 of the gap C 1 is connected to an inclined surface 7 that is inclined toward the cored bar 3 toward the width direction edge 2 e of the crawler body 2.
- the gap C 1 is outside in the crawler width direction, improves the bendability between the core bars 3 in the crawler circumferential direction, reduces running vibration, and removes snow or the like that has been stepped between the composite lugs 4 in the crawler width direction outside. Can escape.
- a notch C 2 is formed outside the crawler width of the composite lug 4.
- a notch C 2 formed between the outer ends 4 a 2 of the pair of lugs 4 a of the composite lug 4 is connected to the ground contact surface 4 f of the composite lug 4, and the widthwise edge 2 e of the crawler body 2 from the ground contact surface 4 f.
- the first inclined surface 8 that inclines toward the metal core 3 and the first inclined surface 8 are connected to the bottom surface 6 having the same height as the bottom surface 6 of the region R, and the bottom surface 6.
- a second inclined surface 9 that inclines toward the cored bar 3 toward the edge 2 e in the width direction.
- the composite lugs 4, notch C 2 which is formed between the outer end portion 4a 2 of the pair of lugs 4a is open in the crawler width direction outside.
- the notch portion C 2 is configured as a gap having a narrower gap in the crawler circumferential direction at the same position in the crawler width direction than the open portion C 3 formed between the inner end portions 4 a 1 of the composite lug 4.
- the region R surrounded by the composite lug 4 and the central lug 5 is located at a position overlapping the core metal 3 in the crawler thickness direction, so that snow and soft ground in the region R are burdened by the aircraft.
- the metal core 3 can be pressed and hardened together with the load.
- the force for pressing snow and soft ground by the metal core 3 is increased, so that the packing property is improved. Therefore, according to the elastic crawler 1 according to the present embodiment, it is possible to improve the packing property, and thus improve the transmission of the driving force to snow or soft ground.
- the elastic crawler 1 includes an opening portion C 3 that opens only one direction of the region R.
- the elastic crawler 1 includes an opening portion C 3 that opens only one direction of the region R.
- the composite lug 4 (the portion including the inner end 4a 1 and the connecting lug 4b) and the central lug 5 are stepped and compacted, and the composite lug (the inner end 4a 1 is connected).
- the composite lug (especially inner end 4a 1 can be carried out by moving an opening C 3 a portion) 4 is formed on the center side of the crawler width direction of the composite lug 4 containing as a base point.
- the direction in which the opening C 3 opens the region R is a direction along the crawler width direction. In this case, the lateral shift can be suppressed.
- the direction in which the opening C 3 opens the region R is a direction toward the center in the crawler width direction along the crawler width direction.
- the escape to the outside of the crawler width direction of the portion that has been stepped on is suppressed, the escape of snow or the like is directed toward the center in the crawler width direction where the burden load from the aircraft is large, thereby reducing the packing property during traveling.
- a part of the lug surrounding the predetermined region R is the central lug 5 that overlaps the center of the core metal 3 in the crawler width direction when viewed in the crawler thickness direction.
- a part of the lug surrounding the predetermined region R is the central lug 5 that overlaps the central portion 3a of the core bar 3 in the crawler width direction.
- the region R is surrounded by the central lug 5 to which the most load is applied, such as a burden load from the airframe, thereby further improving the packing property. be able to.
- the lugs overlap and extend across a plurality of core bars 3 adjacent to each other in the crawler circumferential direction as viewed in the crawler thickness direction.
- two width direction lug portions 4a in the composite lug 4 respectively extend over a plurality of core bars 3 adjacent to each other in the crawler circumferential direction as viewed in the crawler thickness direction.
- the lug surrounding the region R is provided at one position opposed to the center in the crawler width direction, while the other position is provided.
- the gap C 1 is provided. In this case, running vibration can be suppressed while improving packing properties.
- the elastic crawler 1 includes two lugs that respectively surround the two regions R spaced apart in the crawler width direction, and each of the two lugs opens the region R.
- opening C 3 is also preferably facing each other.
- the two composite lugs 4 are arranged at positions symmetrical with respect to the center line with a center line extending in the crawler circumferential direction passing through the center in the crawler width direction.
- the two opening portions C 3 are arranged in a row at intervals in the crawler width direction, and these opening portions C 3 are opened toward the same central lug 5.
- the edges 4e1, 4e2 of the region R in the crawler circumferential direction are respectively positioned between the crawler circumferential edges of the crawler circumferential edges 3e1, 3e2 of the core metal 3. ing.
- the composite lug 4 since the composite lug 4 is in a position that overlaps with the highly rigid cored bar 3 in comparison with the elastic body in the crawler thickness direction, the snow can be squeezed with a stronger force and more packing property can be obtained. Improvements can be made.
- the elastic crawler 1 it is also preferable that at least one edge in the crawler circumferential direction of the region R coincides with at least one edge in the crawler circumferential direction of the core metal 3 in the crawler thickness direction view.
- the composite lug 4 is bent around the crawler circumferential edges 3e1 and 3e2 of the core metal 3 as the elastic crawler 1 is wound around the sprocket or idler, so that the soil or the like clogged in the region R can be removed. Since it can be easily removed, it is possible to suppress a decrease in packing property due to continuous use of the elastic crawler 1.
- the lug preferably surrounds all directions of the region R.
- the maximum raised portion 5a of the central lug 5 the same height as the ground contact surface 4f of the composite lug 4, the entire direction of the region R is surrounded by the composite lug 4 and the central lug 5, or
- the recess formed in the lug 4 as the region R, the entire direction of the region R can be surrounded only by the composite lug 4. Also in this case, by improving the packing property, it is possible to improve the transmission of driving force to snow or soft ground.
- the present invention includes an endless belt-like main body having elasticity and a pair of wings extending from the inner side in the width direction of the main body to the outer side in the width direction of the main body, and a plurality of the wings embedded at intervals in the circumferential direction of the main body.
- An elastic crawler comprising: a cored bar; a roller rolling surface formed on the inner peripheral surface of the main body extending in the circumferential direction of the main body; and a plurality of lugs formed on the outer peripheral surface of the main body. And can be employed in elastic crawler devices.
Abstract
Description
本発明に係る弾性クローラによれば、低燃費と良好な乗り心地との両立が可能になる。
この場合、1個当たりのラグの体積が増え、ラグの耐久性を向上させることができる。
この場合、より燃費の低減を図ることができる。
この場合、ラグの耐久性を向上させつつ、乗り心地を改善できる。
本発明に係る弾性クローラ装置によれば、低燃費と良好な乗り心地との両立が可能になる。
Claims (5)
- 弾性を有する無端帯状の本体と、
前記本体の幅方向内側から当該本体の幅方向外側に伸びる一対の翼部を有して前記本体の周方向に間隔を置いて埋設された複数の芯金と、
前記本体の内周面に当該本体の周方向に延在して形成される転輪転動面と、
前記本体の周方向で隣り合う前記翼部同士の間に前記本体の幅方向外側に伸びて前記本体の内周面に形成される凹部と、
前記本体の周方向で隣り合う前記芯金同士の間で前記転輪転動面と前記本体の厚み方向で重複する一端から前記芯金の前記翼部が埋設された部分と前記本体の厚み方向で重複する他端へ前記本体の幅方向に延在して前記本体の外周面に複数形成されるラグと、
を備える弾性クローラ。 - 前記本体の周方向で隣り合う前記ラグの間に形成され、前記ラグ同士を連結する連結ラグを備える請求項1に記載の弾性クローラ。
- 前記連結ラグは、前記凹部と前記本体の厚み方向で重複する位置に、前記本体の周方向に隣接する前記ラグ同士と前記連結ラグにより形成される隙間が形成されるように備えられる、請求項2に記載の弾性クローラ。
- 前記連結ラグは、前記転輪転動面及び前記芯金と前記本体の厚み方向で重複する位置に、前記本体の周方向に隣接する前記ラグ同士と前記連結ラグにより形成される隙間が形成されるように備えられる、請求項2に記載の弾性クローラ。
- 請求項1乃至4のいずれか1項に記載の弾性クローラと、前記弾性クローラが巻き掛けられる、駆動輪、従動輪および転輪と、を備えることを特徴とする、弾性クローラ装置。
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CN201680044872.5A CN107848589B (zh) | 2015-07-30 | 2016-07-28 | 弹性履带和弹性履带装置 |
US15/741,768 US10435091B2 (en) | 2015-07-30 | 2016-07-28 | Elastic crawler and elastic crawler device |
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WO2019033215A1 (en) | 2017-08-16 | 2019-02-21 | Camso Inc. | TRACTION CHENILLE OF A VEHICLE |
WO2019097923A1 (ja) * | 2017-11-15 | 2019-05-23 | 株式会社ブリヂストン | ゴムクローラ |
JP2019089457A (ja) * | 2017-11-15 | 2019-06-13 | 株式会社ブリヂストン | ゴムクローラ |
US10435091B2 (en) | 2015-07-30 | 2019-10-08 | Bridgestone Corporation | Elastic crawler and elastic crawler device |
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JPWO2017017958A1 (ja) | 2015-07-30 | 2018-05-24 | 株式会社ブリヂストン | 弾性クローラ |
US11572115B2 (en) * | 2019-07-17 | 2023-02-07 | Srj, Inc. | Tread pattern |
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