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    • 2. 发明授权
    • Rotary mine boring head having movable links with cutter bits
    • 旋转镗头具有切刀位的可动连杆
    • US5439274A
    • 1995-08-08
    • US132993
    • 1993-10-06
    • Edward Krueckl
    • Edward Krueckl
    • E21C27/12E21B10/62E21C27/24
    • E21C27/124
    • A continuous mining machine having a cutter frame with two rotary boring heads mounted on this frame for rotation about axes extending longitudinally of the machine. Each boring head has a plurality of radially extending rotor arms which carry and support cutter bits on the front thereof. A pair of reciprocating pole devices are mounted in each of the rotor arms for movement in the radial direction of the arm. A number of link members are each pivotally connected at opposite ends thereof to respective pair of the pole devices and additional cutter bits are mounted on the link members. There is also a cam mechanism for reciprocating each pair of pole devices as the boring heads are rotated. The cam mechanism causes each pair of pole devices to be pushed radially outwardly at each of the four corners distributed about a circular hole cut by the respective boring head in such a manner that the resulting hole bored by the machine is generally rectangular. Preferably, each pair of pole devices has rollers mounted thereon and each rotor arm has tracks mounted therein, on which the rollers run. The preferred mining machine includes a mobile frame with a longitudinal conveyor mounted on this frame having a forwardly open throat adjacent floor level.
    • 一种连续采矿机,具有一个具有两个旋转钻头的切割框架,该两个旋转钻头安装在该框架上,以围绕机器纵向延伸的轴线旋转。 每个钻头具有多个径向延伸的转子臂,其承载并支撑其前端的切削刀头。 在每个转子臂中安装有一对往复运动杆装置,以在臂的径向上移动。 多个连杆构件的相对端分别枢转地连接到相应的一对杆装置,并且另外的切割钻头安装在连杆构件上。 还有一个凸轮机构,用于在镗头旋转时往复运动每对极杆装置。 凸轮机构使得每对极装置被径向向外推动,其中四个角分别围绕由相应的钻头切割的圆形孔分布,使得由机器钻出的所得孔大致为矩形。 优选地,每对极装置具有安装在其上的辊,并且每个转子臂具有安装在其中的轨道,辊上运行。 优选的采矿机包括具有安装在该框架上的纵向输送机的移动框架,其具有邻近楼层的向前开口的喉部。