Method for the mining of coal and coal planer installation

1. A method for mining using a planer installation, the planer installation including a planer, a planer chain, a drive station having a drive chain wheel and a drive, and a deflection station having a deflection chain wheel, the method comprising:

moving the planer reversibly between the drive station and the deflection station using the planer chain; and

displacing the deflection chain wheel based upon at least one of a direction of movement of the planer or a position of the planer.

2. The method of claim 1 , wherein

a reversing cycle of the planer includes a movement of the planer from the drive station to the deflection station and from the deflection station back to the drive station;

the deflection chain wheel is moved into a position with maximum chain pretension one of before or at a start of the reversing cycle; and

the deflection chain wheel is moved into a position with minimum chain tension during the reversing cycle one of continuously or according to a movement algorithm.

3. The method of claim 1 , wherein

the deflection chain wheel is mounted on a slide, the slide being guided displaceably in a slide guide.

4. The method of claim 1 , wherein

an axis of rotation of the deflection chain wheel is oriented at an angle of approximately 30° to 60° with respect to the horizontal.

5. A planer installation for mining, comprising:

a movable planer;

a planer chain for moving the planer;

a drive station having a drive and a drive chain wheel for driving the planer chain;

a driveless deflection station;

a deflection chain wheel located in the deflection station;

a slide; and

a tension device, wherein

the planer is moved between the drive station and the deflection station;

the deflection chain wheel is located on the slide; and

the slide is displaced by the tension device, based upon at least one of a direction of movement or a position of the planer

6. The planer installation of claim 5 , wherein

an axis of rotation of the deflection chain wheel is positioned obliquely.

7. The planer installation of claim 6 , wherein

the axis of rotation of the deflection chain wheel is oriented at an angle of approximately 30° to 60° with respect to the horizontal.

8. The planer installation of claim 5 , further comprising:

a conveyinq device including at least one planer guide element, at least one groove, and a conveyor chain belt;

at least a first conveying drive station and a second conveying drive station; and

a slide guide, wherein

the at least one planer guide element is operable to guide the planer;

the conveyor chain belt is driven continuously by the first conveying drive station and the second conveying drive station; and

the slide is guided within the slide guide.

9. The planer installation of claim 8 , further comprising:

at least one tension cylinder located between the planer guide and the a side cheek of the corresponding drive station, wherein

the at least one tension cylinder is operable to displace the slide.

10. The planer installation of claim 8 , wherein

a distance of the planer guide from the at least one grooves of the conveying device increases in an entry region of the deflection chain wheel.

11. The planer installation of claim 9 , wherein

the tension cylinder is articulated at a first end one of on a side cheek of a machine frame or of the at least one groove; and

the tension cylinder is articulated at as second end on the slide.

12. The planer installation of claim 5 , wherein

the planer chain includes a tension strand and a return strand;

the tension strand and the return strand of the planer chain run next to one another with a height offset in a region of the deflection chain wheel; and

the tension strand and the return strand run one above the one another with a height offset on a longwall face and at the drive chain wheel.