Roof support Yurmash 4U-09/23
The YURMASH 4У-09/23 chock-shield support is designed to mechanically strengthen and ensure a safe working face area by controlling the roof including the heavy ones according to rock pressure manifestation, and advance a long wall conveyor as coal is worked out in the fat and steep beds.
It can operate in a wide range of worked thicknesses of seams with installation of distance pieces to the hydraulic legs.
The minimum seam thickness that can be worked by a shearer is 1,1m due to the small dimension of the beam at the point of articulation to the canopy.
Service life: 60 thsd load cycles.
Specifcation |
MKYU.4У.51 |
MKYU.4У.52 |
|---|---|---|
Closed height, mm min |
900/1100* |
|
Extended height, mm max |
1600/2300* |
|
Support resistance, kN/m2 |
960 |
790 |
Advance increment, mm |
800 |
|
Unit installation spacing, mm |
1500 |
|
Base type |
Mobile catamaran |
|
Number of hydraulic legs |
4 |
|
Leg type |
Double telescopic, hydraulic |
|
Piston diameter, mm |
220 |
|
Check valve actuation pressure, MPa |
42 |
38 |
Working pressure, MPa |
32 |
|
Setting load ratio |
0,76 |
0,84 |
Average ground pressure, MPa |
2,3 |
2,0 |
Canopy type |
Articulated with cylinders |
Rigid with mechanical stop against front legs |
Tip load, kN |
240 |
320 |
Advancing pattern |
Advancing and retreating |
|
Advance force (nominal), kN: |
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Service life of steel works, cycle |
60000 |
|
Support control type |
Electric and hydraulic or manual pilot control |
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Overall dimensions in transport position, mm: |
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* Depending on types of the legs installed.