Abstract

A wheel rim, in particular for a wheel of an agricultural vehicle is disclosed, in which an annular body comprises a central annular portion extending around an axis, two peripheral annular portions for coupling with the beads of a tyre and two intermediate annular portions that connect the two peripheral annular portions to the central annular portion, each intermediate annular portion comprises a tilted wall with an external frustoconical surface that forms an angle α with a plane that is perpendicular to the aforesaid axis.

IPC Classes  ?

• B60B 21/10 - Rims characterised by the form of tyre-seat or flange, e.g. corrugated
• B60B 21/02 - Rims characterised by transverse section

Goods & Services

Vehicles; Apparatus for locomotion by land, air or water; Tractors; Tractor trailers.

Goods & Services

Vehicles; Apparatus for locomotion by land, air or water; Tractors; Tractor trailers.

Abstract

A fastening system (1) for fastening an auxiliary wheel (2) to a main wheel (3) of an agricultural vehicle comprises an annular spacer (18) interposed between a rim (4) of the main wheel (3) and a further rim (17) of the auxiliary wheel (2), and a plurality of tensioning devices (33) acting between the auxiliary wheel (2) and the main wheel (3), for holding the auxiliary wheel (2) pressed against the main wheel (3). In order to reduce the stress to which a disc (5) of the main wheel (3) is subjected, a fastening element (24), or auxiliary disc, is provided comprising a first fastening portion (25), which can be detachably fixed to a hub (6) of the vehicle and a second fastening portion (28), which is axially spaced from the first fastening portion (25), wherein each of the tensioning devices (33) comprises a first end element (34) that can be detachably fastened to the second fastening portion (28) and a second end element (36) that can be detachably fastened to the annular spacer (18).

IPC Classes  ?

• B60B 11/02 - Units of separate wheels mounted for independent or coupled rotation
• B60B 11/06 - Wheels with more than one rim mounted on a single wheel body

Abstract

A variable track wheel (1) comprises a rim (2) suitable for receiving a tyre, and a disc (3) through which said wheel (1) is mountable on a hub (37), said disc (3) being removably secured by fastenings (6) to a connecting member (4) provided in said rim (2), said connecting member (4) projecting towards a rotation axis (X) of said wheel (1), said wheel further comprising a plurality of spacers (15) interposed between an annular perimeter zone (36) of said disc (3) and said connecting member (4) of said rim (2), said disc (3) and said rim (2) being mountable in a plurality of reciprocal axial positions and in a plurality of reciprocal orientations to obtain a variation in the track of said wheel (1), said wheel (1) further comprising at least one centring device (8; 9) for mutual positioning of said disc (3) and of said rim (2), said centring device (8; 9) comprising a hole (10; 10a; 10b) and a pin (11), said hole (10; 10a; 10b) or said pin (11) being provided in said connecting member (4) or in said disc (3), said centring device (8; 9) further comprising a coupling element (21) so conformed as to cooperate with said hole (10; 10a; 10b) and with said pin (11) for reciprocally coupling said pin (11) and said hole (10; 10a; 10b).

IPC Classes  ?

• B60B 23/00 - Attaching rim to wheel body
• B60B 23/12 - Attaching rim to wheel body by devices arranged to permit variation of axial position of rim relative to wheel body for track- width adjustment
• B60B 3/00 - Disc wheels, i.e. wheels with load-supporting disc body

Abstract

A variable track wheel (1) comprises a rim (2) suitable for receiving a tyre, and a disc (3) through which said wheel (1) is mountable on a hub (37), said disc (3) being removably secured by fastenings (6) to a connecting member (4) provided in said rim (2), said connecting member (4) projecting towards a rotation axis (X) of said wheel (1), said wheel further comprising a plurality of spacers (15) interposed between an annular perimeter zone (36) of said disc (3) and said connecting member (4) of said rim (2), said disc (3) and said rim (2) being mountable in a plurality of reciprocal axial positions and in a plurality of reciprocal orientations to obtain a variation in the track of said wheel (1), said wheel (1) further comprising at least one centring device (8; 9) for mutual positioning of said disc (3) and of said rim (2), said centring device (8; 9) comprising a hole (10; 10a; 10b) and a pin (11), said hole (10; 10a; 10b) or said pin (11) being provided in said connecting member (4) or in said disc (3), said centring device (8; 9) further comprising a coupling element (21) so conformed as to cooperate with said hole (10; 10a; 10b) and with said pin (11) for reciprocally coupling said pin (11) and said hole (10; 10a; 10b).

IPC Classes  ?

• B60B 3/00 - Disc wheels, i.e. wheels with load-supporting disc body
• B60B 23/00 - Attaching rim to wheel body
• B60B 23/12 - Attaching rim to wheel body by devices arranged to permit variation of axial position of rim relative to wheel body for track- width adjustment