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US 2012/0068530 A1Published application
Track with rotating bushings for track-type vehicles
AssigneeBerco S.p.A.
InventorFrancesco Grenzi
Life of this patent
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AssigneeBerco S.p.A.
InventorFrancesco Grenzi
Estimating the term…
A track (10) for track-type vehicles is described, comprising a continuous sequence of articulated joints (12, 12′) of the hinge type, oriented according to a first axis (A-A) substantially perpendicular to the central longitudinal development axis (B-B) of the track (10). The articulated joints (12, 12′), provided with pins (36, 36′), are connected to each other and maintained at a constant distance through pairs of links (14) having longitudinal development, arranged laterally and symmetrically with respect to the longitudinal central axis (B-B). Around each pin (36, 36′) a bushing (40) is mounted free to rotate with respect to the pin (36, 36′) itself and between each pin (36, 36′) and the links (14) at least one sliding bearing (44) is press-fitted. The geometric/size characteristics of the links (14) and of the sliding bearings (44) make it possible to improve the stability and the resistance to fatigue and wearing of the articulated joints (12, 12′) of the track (10).
Track (10) for track-type vehicles, comprising a continuous sequence of articulated joints (12, 12′) of the hinge type, oriented according to a first axis (A-A) substantially perpendicular to the central longitudinal development axis (B-B) of the track (10), said articulated joints (12, 12′) being connected to each other and maintained at a constant distance through pairs of links (14) having longitudinal development, arranged laterally and symmetrically with respect to said longitudinal central axis (B-B), each link (14) being provided with a first end flange (16) facing outwards the track (10), with reference to said longitudinal central axis (B-B), and with a second end flange (18) facing inwards the track (10), with reference to said longitudinal central axis (B-B), each link (14) being provided with a first upper surface (20) and a second lower guide surface (24), opposite with respect to said first upper surface (20), made on said first end flange (16) being a first through hole (26), oriented according to said first axis (A-A), for the non-rotatable connection of said link (14) with one of the pins (36, 36′) of said articulated joint (12, 12′), and made on said second end flange (18) being a second through hole (32), oriented according to said first axis (A-A), for the rotatable connection of said link (14) with one of said pins (36, 36′), characterized in that:
Track (10) according to any one of the preceding claims, characterized in that at least one annular-shaped sliding bearing (44) is housed inside said second through hole (32) of each link (14), the ratio (R0) between the length (S) and the related internal diameter (D) of said sliding bearing (44) being greater than 0.60.
Track (10) according to any one of the preceding claims, characterized in that the non-rotatable connection of said link (14) with said pin (36, 36′) is obtained by means of a ring (42) of the “Seeger” type, integrally joined with said pin (36, 36′) and housed inside an annular groove (28) facing outwards the track (10), with reference to said longitudinal central axis (B-B), obtained on said first end flange (16) at said first through hole (26), said ring (42) providing the locking in position between said first end flange (16) and the end of said pin (36, 36′).
Dependencies are inferred from the claim text.