Roof support Yurmash 2U-055/14
The YURMASH 2U- 055/15 chock-shield roof support is designed to mechanically strengthen and control the roof ensuring a safe working face area by the top caving-in method, to advance the longwall conveyor as coal is sheared in the beds of up to 15 degrees along the dip and to 10 degrees along the strike. The support is outftted with a device adjust and route a face conveyer.
Modifcations are available to be installed in either plough or continuous mining systems.
Closed height, mm min |
600 |
Extended height, mm max |
1400 |
Support resistance, kN/m2 |
475...628 |
Advance increment, mm |
800 |
Unit installation spacing, mm |
1500 |
Base type |
Mobile catamaran |
Number of hydraulic legs |
2 |
Leg type |
Double telescopic, hydraulic |
Piston diameter, mm |
250 |
Check valve actuation pressure, MPa |
42 |
Working pressure, MPa |
32 |
Setting load ratio |
0,76 |
Average ground pressure, MPa |
1,3...1,8 |
Advancing pattern |
Advancing |
Advance force (nominal), kN:
|
|
Service life of steel works, cycle |
30000 |
Support control type |
Electrohydraulic control |
Overall dimensions in transport position, mm:
|
|
Mass,t |
9,0 |