| 摘要 |
A safety device for train passengers which permits barriers to rise and lower as trains (66) pass. Ridge posts (58) are secured by ridge post mounts (64) on a train undercarriage (68). Ridge wheels (60) spins on the ridge posts (58). As the train (66) moves into a train station, the ridge wheels (60) will first encounter an inclined ramp guide (1) or a mechanical ramp guide (52) and spin along the spin wheel ridge (4), causing the motion barrier wall (2) to move downward, below the platform level (10). As the motion barrier wall (2) moves downward, its support system, pole spring units (12) or cylinder spring units (22) will be compressed into underground chambers. As the train (66) leaves the train station the ridge wheels (60) will continue spinning until the last car of the train (66) rolls off the end of the spin wheel ridge (4) and the ramp guide (1) or a mechanical ramp guide (52). At this point, the motion barrier wall (2) would have returned to its normal resting position above the platform level (10) and cylinder spring units (22) or pole spring units (12) would have expanded out of pole spring chambers (28), cylinder spring chambers (40) or barrier slots (70).
|
