Patent ID: 7591514
Filing Date: 2009-09-22
Classification: E02F

Abstract:
1. A cutter head for an excavator machine having at least one cutter motor, each cutter motor comprising: a fastener plate for being fixed to the excavator machine; a mounting structure secured to the fastener plate and comprising an end portion and a mounting assembly; a single hydraulic motor mounted in said mounting assembly with an outlet shaft presenting two ends, said motor and the end portion of the mounting structure being offset in a direction orthogonal to said fastener plate; a plurality of hydraulic conduits formed in the thickness of the fastener plate; a plurality of hydraulic ducts formed in said end portion of the mounting structure to connect the hydraulic motor to said conduits; two rims for mounting the cutter drum, one rim being drivingly connected to one end of said shaft, and the other rim being drivingly connected to the other end of said shaft; and two sets of bearings mounted respectively on the outside face of said mounting assembly and on the outside face of the end portion of the mounting structure; said bearing mounted on the mounting assembly being disposed at least at in part in register with the hydraulic motor.