Roof support Yurmash 2SH-26/53, 2SH-23/48, 2SH-20/43, 2U-20/43
The YURMASH 2SH-26/53, 2 SH -23/48, 2 SH -20/43, 2U-20/43 chock-shield supports are designed to ensure a safe working face area, mechanically strengthen and control the roof including the heavy ones according to the rock pressure manifestation, and advance longwall conveyors as coal is worked out in the fat and steep beds. Roof supports are outftted with devices to anchor, secure roof support units as well as adjust and route face conveyers.
High resistance of the roof support is combined with an optimal weight.
There is an availability to operate both shields in two working modes: either simultaneous or separate control.
Specifcation | 2SH-26/53 |
2SH-23/48 |
2SH-20/43 |
2U-20/43 |
|---|---|---|---|---|
Closed height, mm min |
2600 |
2300 |
2000 |
2000 |
Extended height, mm max |
5300 |
4800 |
4300 |
4300 |
Support resistance, kN/m2 |
1132:1300 |
1145:1270 |
925:956 |
940:1090 |
Advance increment, mm |
800 |
800 |
800 |
800 |
Unit installation spacing, mm |
1750 |
1750 |
1750 |
1500 |
Base type |
Rigid catamaran |
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Number of hydraulic legs |
2 |
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Leg type |
|
Double telescopic, hydraulic |
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Piston diameter |
400 |
400 |
350 |
320 |
Check valve actuation pressure, MPa |
42 |
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Working pressure, MPa |
32 |
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Setting load ratio |
0,76 |
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Average ground pressure, MPa |
2,94 |
2,6 |
2,2 |
2,4 |
Advancing pattern |
retreating |
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Advance force (nominal), kN:
|
|
|
|
|
Service life of steel works, cycle |
30000 |
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Support control type |
Electrohydraulic or manual pilot control |
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Overall dimensions in transport position, mm
|
|
|
|
|
Mass,t |
34,5 |
32,5 |
27,5 |
24 |