Shield
AssemblyArticulated steel cylinder that protects the bore and houses the working area until the lining is placed. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Shield
20 top-level lines as of r193256| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Front Shield & Bulkhead | tbm-front-shield | 1× | 1 | · | part |
| 2 | Middle Shield | tbm-middle-shield | 1× | 1 | · | part |
| 3 | Tail Shield | tbm-tail-shield | 1× | 1 | · | part |
| 4 | Articulation Cylinder 4 parts | tbm-articulation-cylinder | 8× | 8 | 0 | assembly |
| 5 | Tail Brush Seal | tbm-tail-seal | 1× | 1 | · | part |
| 6 | Tail Seal Brush | tbm-brush | 640× | 640 | · | part |
| 7 | Tail Seal Grease Port | tbm-grease-injection | 24× | 24 | · | part |
| 8 | Grout Injection Line | tbm-grout-line | 12× | 12 | · | part |
| 9 | Shield Port & Cover | tbm-shield-port | 20× | 20 | · | part |
| 10 | Bulkhead Penetration | tbm-bulkhead-fitting | 90× | 90 | · | part |
| 11 | Chamber Agitator | tbm-agitator | 4× | 4 | · | part |
| 12 | Earth Pressure Sensor | tbm-earth-pressure-sensor | 8× | 8 | · | part |
| 13 | Walkway & Platform Plate | tbm-walkway | 40× | 40 | · | part |
| 14 | Handrail Section | tbm-handrail | 30× | 30 | · | part |
| 15 | Cylinder Seal Kit | tbm-cylinder-seal-kit | 8× | 8 | · | part |
| 16 | Cylinder Stroke Sensor | tbm-stroke-sensor | 8× | 8 | · | part |
| 17 | Heavy Structural Bolt | tbm-heavy-bolt | 180× | 180 | · | part |
| 18 | Hex Bolt | tbm-hex-bolt | 700× | 700 | · | part |
| 19 | Hex Nut | tbm-hex-nut | 500× | 500 | · | part |
| 20 | Washer | tbm-washer | 500× | 500 | · | part |