Road leveller

E - Fixed Constructions – 02 – F

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Details

E02F 3/815 (2006.01) A01B 15/20 (2006.01) A01B 31/00 (2006.01) A01B 63/14 (2006.01) A01B 73/00 (2006.01) E01C 23/00 (2006.01) E02F 3/76 (2006.01)

Patent

CA 2213360

A bogie is attached to a three point hitch of a tractor and serves to control the up and down movement of a scraper blade. The bogie comprises an articulated frame having a pair of spaced side rails each connected to a separate lower link of the hitch. An intermediate arm is supported by the side rails and has means for connection to the upper link of the hitch. A castor is mounted for swivelling in a wheel housing and is raised and lowered by means of an hydraulic actuator.

La présente invention a pour objet un bogie de roulement rattaché à l'attelage trois points d'un tracteur et servant à contrôler les mouvements verticaux d'une lame niveleuse. Le bogie de roulement en question est constitué d'un châssis articulé comportant une paire de longerons espacés et individuellement reliés à une des bielles inférieures de l'attelage trois points. Un bras intermédiaire supporté par les longerons est doté d'un dispositif permettant son raccordement à la bielle supérieure de l'attelage. Une roulette pivotante est montée à l'intérieur d'un logement et peut être animée d'un mouvement vertical au moyen d'un actionneur hydraulique.

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