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E-mailPowered roof supports DTM
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Designed for supporting and controlling the roof in mined area of face while operating flat seams of 1.4-5.5 m thickness (different versions).
Provides efficient operation with heavy roof thanks to shield high load capacity not less than 900 kN/m2.
High strength steels of S690QL, A514, 16HGMFTR types with a yield strain of 600…700 MPa used during shields manufacture.
The hardness conformity assesment is performing using the shield load computer 3D-modeling in appropriate software packages (Solidworks etc.) and additionally while testing on ST2000 bench.
Shield lifetime – 60 000 cycles.
Characteristics
| Seam thickness, m | 1,4 – 5,5 |
| Shield type | Shield, support-protection type, double-prop |
| Resistivity per 1 m2 of supported area, kN/m2 | 920 – 1400 |
| Shield resistance, kN | 7770 – 12600 |
| Advance step, m | 0,8…1,0 |
| Centre spacing, m | 1,75 |
| Advancing force, kN | 643…1005 |
| Shield weight, t (no more than) | 24…35 |
| Height (min-max), mm | 1200 – 5500 |
| Width, mm | 1640, 1690 |
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