Drive Mechanism
AssemblyThe electromechanical machine that raises and lowers the boom in 6–10 seconds, with a crank geometry that locks the arm over-centre in both end positions. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Drive Mechanism
9 top-level lines as of r98066| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Drive Motor | level-crossing-barrier-drive-motor | 1× | 1 | · | part |
| 2 | Worm Gearbox | level-crossing-barrier-worm-gearbox | 1× | 1 | · | part |
| 3 | Crank Linkage | level-crossing-barrier-crank-linkage | 1× | 1 | · | part |
| 4 | Hand Crank | level-crossing-barrier-hand-crank | 1× | 1 | · | part |
| 5 | Limit Switch | level-crossing-barrier-limit-switch | 4× | 4 | · | part |
| 6 | Friction Clutch | level-crossing-barrier-friction-clutch | 1× | 1 | · | part |
| 7 | Helical Gear Pair | gear-pair | 1× | 1 | · | part |
| 8 | Ball Bearing | ball-bearing | 4× | 4 | · | part |
| 9 | Oil Seal | oil-seal | 2× | 2 | · | part |