| 摘要 |
<p>A portable earth boring machine for the horizontal boring of shafts and the insertion of pipeline casing sections in installations where excavation from the surface is undesirable. The machine is characterized by a main frame portion that supports the auger drive and casing pusher apparatus, and a detachably mounted engine frame portion that permits the transmission of power between the engine and the auger drive and casing pusher apparatus not only when the engine frame portion is positioned on the main frame portion at the boring location but also when said engine frame portion is detached and positioned at a location remote from the main frame means. The machine is further characterized by a novel remote electric control means for the auger drive apparatus that provides for remote operation and hydraulically actuated variable speed control of the boring auger at a location remote from the machine.</p> |
