Machine supporting rock cutting device
AssigneeJoy Global Underground Mining LLC
InventorsPeter A. Lugg, Geoffrey W. Keech
Life of this patent
Estimating the term…
Abstract
A machine for excavating rock includes a frame, a cutting device, and a boom. The cutting device includes a cutting disc having a cutting edge, and the cutting disc is rotatable about a cutting device axis. The boom supports the cutting device and includes a first end, a second end, and a boom axis substantially parallel to the cutting device axis. The boom further includes a first portion and a second portion. The first portion is coupled to the frame for rotation about a first pivot axis between a raised position and a lowered position. The second portion is coupled to the cutting device, and the second portion is pivotable about a second pivot axis between a raised position and a lowered position.
Claims10
A machine for excavating rock, the machine comprising:
- a frame;
- a cutting device including a shaft and a cutting disc having a cutting edge, the cutting disc supported for free rotation relative to the shaft about a cutting device axis;
- and
- a boom supporting the cutting device, the boom including a first end, a second end, and a boom axis substantially parallel to the cutting device axis, the boom further including a first portion and a second portion, the first portion coupled to the frame for rotation about a first pivot axis between a raised position and a lowered position, the second portion coupled to the cutting device, the second portion pivotable about a second pivot axis between a raised position and a lowered position,
- wherein the shaft is supported for free rotation relative to the boom, and
- wherein the cutting device further includes an exciter shaft and an eccentric mass positioned adjacent an end of the shaft and rotating about an exciter axis, rotation of the exciter shaft and eccentric mass inducing an oscillation of the shaft and the cutting element.
Dependencies are inferred from the claim text.