Abstract: A crawler traveling device includes a sprocket and a rubber crawler. The sprocket is provided with a wheel portion that is mounted to a driving axle and tooth portions. The tooth portions are provided at side portions of the wheel portion, spaced apart in a sprocket circumferential direction. The rubber crawler is provided with a rubber body that is wrapped round the sprocket, a wheel portion support face that is provided at an inner periphery portion of the rubber body, and engaging recess portions. The engaging recess portions are provided, spaced apart in a crawler peripheral direction, at each of two crawler width direction side portions of the inner periphery portion to sandwich the wheel portion support face. The engaging recess portions are recessed toward the crawler outer side and the tooth portions can be inserted into and engaged with the engaging recess portions.

Abstract: The object of the present invention is to provide a rubber crawler having reduced vibration during running and further good soil-grasping property and soil-discharging property as well as improved durability.

Abstract: The object of the present invention is to provide a rubber crawler having high traction force and excellent straight-ahead driving property and further improved durability by ensuring good soil-grasping property and soil-discharging property of the crawler body. The rubber crawler 1 has a crawler body 10 and a plurality of metal cores 30 buried in the crawler body and lugs 13 provided on an outer periphery side with they being divided into left and right sides across the central portion, the lugs divided into left and right sides being arranged in zigzag alignment with shifting of phase in a circumferential direction of the crawler body, wherein a contact area of the each lug 13 is divided into a central lug portion 20 and an outer lug portion 22.

Abstract: An endless rubber elastic body 1; a plurality of cores 2 arranged at predetermined pitches and extending in a width direction of the rubber elastic body; a steel cord reinforcing layer surrounding the cores; and a lug 4 formed on an outer peripheral surface of the rubber elastic body 1 at predetermined intervals. Thicknesses of respective end portions of each core 2 are gradually decreased or made constant toward respective end edges. A covering thickness t1, t2 of rubber elastic body 1 is thicker at a portion between lugs on each of an inner and outer peripheral surface side than covering thickness T1, T2 of the rubber elastic body. Covering surfaces on both inner and outer peripheral surface sides are flat.

Abstract: A rubber track having: an endless rubber elastic body 1; a plurality of cores 2 arranged at predetermined pitches in the rubber elastic body so as to extend in a width direction of the rubber elastic body; a reinforcing layer extending in the rubber elastic body so as to surround the cores 2; and a plurality of lugs 4 formed on an outer peripheral surface of the rubber elastic body 1 at predetermined intervals and acting on a road surface, the rubber track comprising; a thick wall rubber portion, located between the lugs on the outer peripheral surface of the rubber elastic body, that covers an end portion of each of the cores and communicates with lugs located therebefore and thereafter, wherein an inclined plane of the thick wall rubber portion facing obliquely outward whose thickness gradually decreases toward a side edge side of the rubber elastic body is coplanar with an inclined plane of each of the lugs on the side edge side of the rubber elastic body.

Abstract: A crawler traveling device includes a sprocket and a rubber crawler. The sprocket is provided with a wheel portion that is mounted to a driving axle and tooth portions. The tooth portions are provided at side portions of the wheel portion, spaced apart in a sprocket circumferential direction. The rubber crawler is provided with a rubber body that is wrapped round the sprocket, a wheel portion support face that is provided at an inner periphery portion of the rubber body, and engaging recess portions. The engaging recess portions are provided, spaced apart in a crawler peripheral direction, at each of two crawler width direction side portions of the inner periphery portion to sandwich the wheel portion support face. The engaging recess portions are recessed toward the crawler outer side and the tooth portions can be inserted into and engaged with the engaging recess portions.

Abstract: The object of the present invention is to provide a rubber crawler having reduced vibration during running and further good soil-grasping property and soil-discharging property as well as improved durability.

Abstract: The object of the present invention is to provide a rubber crawler having high traction force and excellent straight-ahead driving property and further improved durability by ensuring good soil-grasping property and soil-discharging property of the crawler body. The rubber crawler 1 has a crawler body 10 and a plurality of metal cores 30 buried in the crawler body and lugs 13 provided on an outer periphery side with they being divided into left and right sides across the central portion, the lugs divided into left and right sides being arranged in zigzag alignment with shifting of phase in a circumferential direction of the crawler body, wherein a contact area of the each lug 13 is divided into a central lug portion 20 and an outer lug portion 22.

Abstract: A rubber track having: an endless rubber elastic body 1; a plurality of cores 2 arranged at predetermined pitches in the rubber elastic body so as to extend in a width direction of the rubber elastic body; a reinforcing layer extending in the rubber elastic body so as to surround the cores 2; and a plurality of lugs 4 formed on an outer peripheral surface of the rubber elastic body 1 at predetermined intervals and acting on a road surface, the rubber track comprising; a thick wall rubber portion, located between the lugs on the outer peripheral surface of the rubber elastic body, that covers an end portion of each of the cores and communicates with lugs located therebefore and thereafter, wherein an inclined plane of the thick wall rubber portion facing obliquely outward whose thickness gradually decreases toward a side edge side of the rubber elastic body is coplanar with an inclined plane of each of the lugs on the side edge side of the rubber elastic body.

Abstract: There are provided: an endless rubber elastic body 1; a plurality of cores 2 arranged at predetermined pitches within the rubber elastic body 1 so as to extend in a width direction of the rubber elastic body; a steel cord reinforcing layer surrounding the cores and extending in the rubber elastic body; and a lug 4 formed on an outer peripheral surface of the rubber elastic body 1 at predetermined intervals and acting on a road surface, in which thicknesses of respective end portions of each of the cores 2 are gradually decreased toward respective end edges of each of the cores, or are made constant up to the respective end edges of each of the cores 2; at each end portion of each of the cores 2, a covering thickness t1, t2 of the rubber elastic body 1 is formed thicker at a portion between lugs on each of an inner peripheral surface side and an outer peripheral surface side than a covering thickness T1, T2 of the rubber elastic body at a point located ¼ of a length L of the core from an end edge position of t

Abstract: A rubber track has lugs (12A, 12B) formed on its outer peripheral surface in two rows of a first row and a second row that are arranged with the same pitch in the circumferential direction, and the rubber track also has guide juts formed on its inner peripheral surface at the equal intervals. Ends (13A, 13B), located in the center part in the lateral direction of the track, of the lugs (12A, 12B) are superposed on a projection area of a guide jut (16). Because the ends (13A, 13B) are superposed on the projection area of the guide jut (16) having high rigidity, the ends bend less than other portions when the track is wrapped around a sprocket etc. This prevents concentration of strain at the ends (13A, 13B), and as a result, cracks in the ends (13A, 13B) of the lugs (12A, 12B) are prevented.

Abstract: A rubber crawler which reduces all conventionally occurring drawbacks by forming rubber lugs to the outer peripheral surface so as to correspond to protrusion meshing positions that are susceptible to external flaws or cracking, with significantly enhanced durability of the rubber crawler. In a rubber crawler with metal cores provided at front and rear with protrusions for wheel fall-off prevention, in which the metal cores are buried at a fixed pitch along the longitudinal direction of a rubber elastic body and the wheel fall-off prevention protrusions of adjoining metal cores mesh with each other, rubber lugs are formed to the outer peripheral surface so as to correspond to the meshing portions of the wheel fall-off prevention protrusions. 1—metal core, 2,3—protrusions, 5a, 5b rubber lugs, 6—sprocket engagement hole.