PK-8MA |
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KThe PK-8MA heading machine is designed for driving development workings and
extraction chambers in underground potash ore mines where cutting resistance may
vary from 4.0 to 4.5 kN/cm2 and rock breaking point up to 60 MPa.
The machine breaks rock in the face, clears the face from the rock and loads it into
mine cars. The cutting tool of a rotary type has 2 drills (external four-beam drill with cups and
internal double-beam drill with starting borers) rotating in different directions.
The machine has a mounted drill rig for drilling methane drainage boreholes.
Smooth control of the working feed provides optimal performance of the drills in
faces with the different ultimate strength of rocks.
The machine has a combined system of dust suppression consisting of dust evacuation
and water spray subsystems. The heading machine has semi-automatic and manual modes of control. The control
mode depends on mining, geological and technical conditions in which the heading
machine is to be employed.
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Features |
- The machine dreaks rock in the face, clear the face from the rock and loads it into mine cars
- The cutting tool of a rotary has 2 drills (external four-beam drill with cups and internal double-beam drill
with starting borers) rotating in different directions
- The machine has a mounted drill rig for drilling methane drainage boreholes
- Smooth control of the working advance provides optimal performance of the drill in faces with the various
ultimate strength of rocks
- The machine has a combined system of dust suppression consisting of dust evacuation and water spray
subsystems
- The heading machine has semi-automatic and manual modes of control. The control made depends on
mining, geological and technical conditions in which the heading machine is to be employed
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| Output, m3/min |
2.24 |
| - while driving, m/min |
0.28 |
| - while potash extraction, t/min |
4.5 |
| - working speed for the 3.0 m tool (3.2 m tool) |
arched |
| Roadway cross-section area, m2: |
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| - with 3.0 m tool |
8.0 |
| - with 3.2 m tool |
9.0 |
| Travel speed, m/hour: |
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| - working speed for the 3.0 m tool (3.2 m tool) |
0-15 (0-16.8) |
| - maneuvering speed |
0 - 200 |
| Allowable gradient of heading, degrees |
±15 |
| Undercarriage |
crawler |
| Conveyor |
belt-type |
| Conveyor belt speed, m/s |
1.28 |
| Angular velocity of cutting tool elements, m-1: |
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| - bridge of bit |
6.97 |
| - internal bore |
13.16 |
| - berm cutters |
21 |
| - cutting-off drill bit |
42.2 |
| Value of the berm cutters vertical move relative to the crawlers supporting surface, mm |
±150 |
| Pump capacity, l/min |
260 |
| Max. working pressure in hydraulic system, MPa |
10 |
| Electrical equipment: |
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| - voltage, V |
660 |
| - version |
explosion proof, for
mines |
| - total installed capacity of electric motors, kW incl. capacity of the cutting tools drive,
kW |
2x110 |
| Dust suppression: |
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| - fan capacity, m3/s |
1.16-2.33 |
| - spray system capacity, l/min |
67 |
| Overall dimensions of the heading machine in the working position, m:S |
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| - length |
9.2 |
| - width (with 3.0 m tool) |
3.0 |
| - width (with 3.2 m tool) |
3.2 |
| Mass, tons |
59 or 60 |
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| Back |
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