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.
|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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