| 摘要 |
The present invention relates to a guide arrangement for a frame construction 10, such as a ladder structure, a platform or the like, which is mounted for linear movement along preferably a single guide bar 7 and the span of which is such that the frame construction will rest against and be supported by at least one rail 8 extending parallel with the guide bar, through the intermediary of runners or rollers (11). The arrangement further comprises two guide members 35 which are mutually spaced apart along the guide bar 7 and which are joined together and to the frame construction (10), such that the frame construction takes a predetermined angular portion (perpendicular) relative to the longitudinal extension of the guide bar 7. Each of these guide members 37 has lightly journalled thereon at least three rolling surfaces 36, 37, 38 which are positioned so that the guide bar 7 will pass therebetween, to hold the frame construction 10 in running engagement with the guide bar 7. <IMAGE> |
