| 摘要 |
A mining machine (20) for combined entry and retreat cutting of material located in underground seams including, a movable mainframe (21), a wing (50, 51) extending ahead of the movable mainframe, a cutter assembly (100) positionable proximate the end of said wing for entry cutting a hole in the material when the wing is aligned with the direction of movement of the mainframe, a pivotal connection (130) between the mainframe and the wing for orienting the wing a t an angle to the direction of the movement of the mainframe, and a carriage mechanism (80) for moving the cutter assembly along the wing for cutting of the material in proximity to the wing during retreat cutting of the material.
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