Driving arrangement for a heavy-duty grinding mill and heavy-duty grinding mill

1. Driving arrangement for a heavy-duty grinding mill ( 50 ) having a horizontal tube with a circumferential girth gear ( 51 ), comprising:

a driving assembly, comprising:

a motor ( 10 );

at least two engaging pinions ( 42 , 44 ) configured to engage the girth gear ( 51 ) for driving the grinding mill ( 50 );

at least one gearbox ( 20 ) comprising an input shaft ( 22 ) for coupling the motor ( 10 ) with the at least one gearbox ( 20 ), at least two output shafts ( 31 , 32 ) for coupling the gearbox ( 20 ) with the at least two engaging pinions ( 42 , 44 ) and a torque split arrangement being configured to transmit torque of the input shaft ( 22 ) to the at least two output shafts ( 31 , 32 ); and

at least one frame ( 48 ) for supporting the at least two engaging pinions ( 42 , 44 ) separate from the gearbox ( 20 ),

wherein the torque split arrangement comprises a torque split shaft ( 24 ) on which are arranged a torque split input pinion ( 25 ) directly engaging with an input pinion ( 23 ) on the input shaft ( 22 ) and two torque split output pinions ( 26 , 27 ) directly engaging with an output pinion ( 28 , 29 ) on each of the at least two output shafts ( 31 , 32 ), respectively.

2. Driving arrangement of claim 1 , wherein the torque split output pinions ( 26 , 27 ) are arranged on opposite sides of the torque split input pinion ( 25 ).

3. Driving arrangement of claim 1 , wherein the torque split output pinions ( 26 , 27 ) comprise helical gears in opposite orientation to each other.

4. Driving arrangement of claim 3 , wherein the torque split shaft ( 24 ) is supported axially free floating.

5. Driving arrangement of claim 1 , wherein the frame ( 48 ) comprises at least two platforms arranged parallel to each other, and each of the at least two platforms supports one of the at least two engaging pinions ( 42 , 44 ).

6. Heavy duty grinding mill comprising a horizontal tube with a circumferential girth gear ( 51 ), comprising two driving arrangements according to claim 1 , wherein the two driving arrangements are located on opposite sides of the grinding mill.

7. Heavy duty grinding mill of claim 6 , wherein the two driving arrangements are further located in opposite directions with regard to the axial ends of the grinding mill.

8. Driving arrangement of claim 2 , wherein the torque split output pinions ( 26 , 27 ) comprise helical gears in opposite orientation to each other.

9. Driving arrangement of claim 8 , wherein the torque split shaft ( 24 ) is supported axially free floating.