| 摘要 |
PROBLEM TO BE SOLVED: To provide the autonomous section controller for the trolley type travel truck which can surely prevent rear end collision and is of simple constitution and inexpensive. SOLUTION: Trolley lines 2a to 2e and a travel rail 1 are divided into plural sections and for every adjacent sections (e.g. sections (n) and (n+1)), a relay Rn is interposed between the trolley line 2e for section control and a ground power source (V phase) in the downstream-side section (n+1). Then while a precedent truck 3 stays in this section (n+1), the relay Rn is fed with electricity through collector rings 4a and 4e of this truck 3. In the downstream-side section (n), a (b) contact Rnb of the relay Rn is interposed between the start/stop trolley line 2d and the power source and the relay Rn is fed with electricity to break the (b) contact Rnb , thereby stopping a following truck 3 which is entering this section (n). |
