Swing boom pivot mechanism

E - Fixed Constructions – 02 – F

Patent

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Details

E02F 3/38 (2006.01) A01G 23/085 (2006.01)

Patent

CA 2522316

The present invention relates to a swing boom assembly (10), which has a fixed base (52), a pivot base (40) rotatably mounted on the fixed base, and a boom (60) pivotally coupled to the pivot base. The boom is coupled proximate a lower end of the pivot base and has a hydraulic piston cylinder (59) coupled between the boom and an upper end of the pivot base. The hydraulic piston cylinder is operative to raise and lower the boom. The pivot base has an upper shaft (48), a main body (54) having a pair of spaced apart clevis plates affixed to each end of the upper shaft, and a spherical bearing (50) rigidly mounted around the upper shaft between the clevis plates and said bearing having an outer race rigidly mounted to the fixed base. The hydraulic piston cylinder is coupled to the main body of the pivot base rather than directly to an upper shaft.

La présente invention a trait à un ensemble d'estacade de répartition (10), comportant une base fixe (52), une base à pivotement (40) montée à rotation sur la base fixe, et une estacade (60) reliée à pivotement à la base à pivotement. L'estacade est reliée à proximité d'une extrémité inférieure de la base à pivotement et comporte un vérin à piston hydraulique (50) couplé entre l'estacade et une extrémité extérieure de la base à pivotement. Le vérin à piston hydraulique est opérable pour relever et abaisser l'estacade. La base à pivotement comprend un arbre supérieur (48), un corps principal (54) comportant une paire de plaques de chape fixées à chaque extrémité de l'arbre supérieur, et un palier sphérique (50) monté de manière rigide autour de l'arbre supérieur entre les plaques de chape et ledit palier comportant un chemin de roulement externe monté de manière rigide à la base fixe. Le vérin à piston hydraulique est relié au corps principal de la base à pivotement au lieu d'être monté directement à un arbre supérieur.

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