Sprung roll bar
A roll bar, in particular for agricultural machines, comprising a sprung protection structure ( 12 ), a plurality of fastening elements ( 22, 24 ) destined to be fastened to the body of the farming machine, and a damping device ( 26 ) interposed between each fastening element ( 22, 24 ) and the sprung protection structure ( 12 ).
1. A roll bar, comprising a sprung protection structure, a plurality of fastening elements for fastening the sprung protector structure to a body of a farming machine, and a damping device interposed between each fastening element and the sprung protection structure, wherein said damping device comprises a pack of damping members made of elastomeric material, distanced from each other by metallic spacers.
2. A roll bar as claimed in claim 1 , wherein the damping members have annular shape and are inserted on a cylindrical end portion of a respective upright of the sprung protection structure.
3. A roll bar as claimed in claim 2 , wherein the pack of damping members is housed in a seat of a respective fastening element with radially outer surfaces of the damping members in contact with an inner surface of the seat.
4. A roll bar as claimed in claim 3 , wherein the pack of damping members and spacers are compressed axially.
5. A roll bar as claimed in claim 4 , wherein an upper part of the pack of damping members is compressed axially between an inner projection of the seat and an upper shoulder of the end portion of the upright, and a lower part of the pack of damping members is compressed axially between said inner projection and a cup element fastened to an end of a terminal portion.