| 摘要 |
PCT No. PCT/US97/03127 Sec. 371 Date Aug. 27, 1998 Sec. 102(e) Date Aug. 27, 1998 PCT Filed Feb. 28, 1997 PCT Pub. No. WO97/31813 PCT Pub. Date Sep. 4, 1997For machinery it is often desirable to change the gauge of the track or wheels. Variation of gauge is commonly accomplished by hydraulic cylinders which act through telescopic cross beams (3) to, for example, move tracks (2) of the machinery apart. Apparatus is disclosed to guide movement of the structure to change gauge and to lock the structure in place to prevent relative movement while the machinery is operated. Remote control (30) may be used to control these operations. |
