| 摘要 |
<p>A system (10, 400) system for lowering and raising telecommunications equipment along a mast pole (24, 424). The system (10, 400) comprises a mast pole (24, 424), a platform means (32, 432), a frame means (28, 428), a plurality of lift cables (36, 436), a hoisting means (e.g., 52, 452) and a transition means (40, 440). The platform means (32, 432) surrounds the external surface of the mast pole (24, 424) and is moveable along the length thereof. The platform means (32, 432) is arranged for mounting of telecommunications equipment thereon. The frame means (28, 428) is attached at the open upper end of the mast pole shaft (24, 424) and comprises pulley means (e.g., 194, 224, 240), means for guiding at least one lift cable (e.g., 200) and means for guiding at least one telecommunications cable, i.e., signal cable or power cable. Each lift cable (36, 436) has a first end connected to the platform means (32, 432) and extends through the guiding means and through the passageway of the mast pole (24, 424). The hoisting means (e.g., 52, 452) is secured to the lower end of the mast pole (24, 424) and is provided for selectively raising and lowering the platform means (32, 432). The pulley means (e.g., 194, 224, 240) includes a winch cable (44, 444) having a free end. The transition means (40, 440) is located within the passageway of the mast pole (40, 424) and is provided to couple the second end of the lift cables (36, 436) to the free end of the winch cable (44, 444). The transition means (40, 440) also provides a means for retaining at least one telecommunications cable therein (e.g, 120, 128, 528).</p> |
