Rear dumping dragline bucket

Details Rear dumping dragline bucket Rear dumping dragline bucket

E - Fixed Constructions

02

F

E02F 3/60 (2006.01) E02F 3/54 (2006.01) E02F 3/58 (2006.01)

Patent

CA 2342789

An excavator dragline bucket (10) is supported by a hoist line (38) from a dragline power unit (26), and pivots about the connection (32) of the hoist line (38) to the bucket (10). The bucket (10) is designed to dump toward the rear, and has a gate (44) that is latched in position during the loading of the bucket (10), and which will be automatically unlatched as the bucket (10) tilts rearwardly. The gate (44) is connected through a double pivoting bellcrank (48) that is operated by control links (54, 56) connected to a hoist chain (30) such that as the angle between the bucket (10) and the hoist chain (30) changes, the control link (54, 56) loads the double pivoting bellcrank (48) and releases the latch (42). When the bucket (10) has been dumped and is returned to its horizontal position, the tailgate (44) first moves against the rear edges of the bucket (10), and subsequently the double pivoting bellcrank (48) permits the tailgate (44) to slide along its plane to a latched position.

L'invention concerne une benne à traction d'excavateur (10) supportée par un câble de levage (38) dépendant d'un bloc d'alimentation de traction (26) et par des pivots disposés au niveau du point de raccord (32) entre le câble de levage (38) et la benne (10). Celle-ci se décharge par l'arrière et possède une paroi coulissante (44) qui est verrouillée lors du chargement de la benne (10) et automatiquement déverrouillée lorsque la benne (10) s'incline en arrière. Cette paroi coulissante (44) est reliée à un levier coudé à double pivot (48) commandé par une tringle de commande (54, 56), laquelle est reliée à une chaîne de levage (30) de sorte que, lorsque l'angle entre la benne (10) et la chaîne de levage (30) change, la tringle de commande (54, 56) charge le levier coudé à double pivot (48) et débloque le verrou (42). Lorsque la benne (10) a été déchargée et a regagné sa position horizontale, la paroi coulissante arrière (44) se déplace d'abord vers les bords arrière de la benne (10), puis grâce au levier coudé à double pivot (48), elle coulisse le long de son plan et referme la benne.

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