Drilling unit

1. Drilling unit, comprising a chassis ( 3 , 4 ) and a drilling machine ( 1 , 2 ) arranged in front of the chassis, the chassis encasing an engine house ( 8 ), in which an engine ( 9 ) is arranged as well as at least one cooler ( 14 ) and at least one fan ( 15 ), the drilling unit comprising at least one partition wall ( 17 ) that divides the engine house ( 8 ) into a first part ( 18 ), which accommodates the engine ( 9 ), and a second part, which accommodates said cooler ( 14 ) and fan ( 15 ), and that the partition wall ( 17 ) divides the engine house ( 8 ) into a front part ( 18 ) and a rear part ( 19 ), wherein the first part ( 18 ) of the engine house ( 8 ) forms the front part and the second part ( 19 ) of the engine house ( 8 ) forms the rear part, and the partition wall ( 17 ) is at least partly air-proof.

2. Drilling unit according to claim 1 , characterized in that the partition wall ( 17 ) is completely air-proof.

3. Drilling unit according to claim 1 , characterized in that the partition wall ( 17 ) forms a substantially air-proof bulkhead between the first and second parts ( 18 , 19 ) of the engine house ( 8 ).

4. Drilling unit according to claim 1 , characterized in that the partition wall ( 17 ) abuts closely against the chassis along an inner periphery thereof.

5. Drilling unit according to claim 1 , characterized in that the chassis ( 3 , 4 ) in the part that encases the second part ( 19 ) of the engine house ( 8 ) is provided with at least one air inlet opening ( 20 ).

6. Drilling unit, comprising a chassis ( 3 , 4 ) and a drilling machine ( 1 , 2 ) arranged in front of the chassis, the chassis encasing an engine house ( 8 ), in which an engine ( 9 ) is arranged as well as at least one cooler ( 14 ) and at least one fan ( 15 ), the drilling unit comprising at least one partition wall ( 17 ) that divides the engine house ( 8 ) into a first part ( 18 ), which accommodates the engine ( 9 ), and a second part, which accommodates said cooler ( 14 ) and fan ( 15 ), and that the partition wall ( 17 ) divides the engine house ( 8 ) into a front part ( 18 ) and a rear part ( 19 ), wherein the first part ( 18 ) of the engine house ( 8 ) forms the front part and the second part ( 19 ) of the engine house ( 8 ) forms the rear part, and the partition wall ( 17 ) is completely air-proof.

7. Drilling unit according to claim 6 , characterized in that the partition wall ( 17 ) forms a substantially air-proof bulkhead between the first and second parts ( 18 , 19 ) of the engine house ( 8 ).

8. Drilling unit according to claim 6 , characterized in that the partition wall ( 17 ) abuts closely against the chassis along an inner periphery thereof.

9. Drilling unit according to claim 6 , characterized in that the chassis ( 3 , 4 ) in the part that encases the second part ( 19 ) of the engine house ( 8 ) is provided with at least one air inlet opening ( 20 ).

10. Drilling unit, comprising a chassis ( 3 , 4 ) and a drilling machine ( 1 , 2 ) arranged in front of the chassis, the chassis encasing an engine house ( 8 ), in which an engine ( 9 ) is arranged as well as at least one cooler ( 14 ) and at least one fan ( 15 ), the drilling unit comprising at least one partition wall ( 17 ) that divides the engine house ( 8 ) into a first part ( 18 ), which accommodates the engine ( 9 ), and a second part, which accommodates said cooler ( 14 ) and fan ( 15 ), and that the partition wall ( 17 ) divides the engine house ( 8 ) into a front part ( 18 ) and a rear part ( 19 ), wherein the first part ( 18 ) of the engine house ( 8 ) forms the front part and the second part ( 19 ) of the engine house ( 8 ) forms the rear part, and the partition wall ( 17 ) forms a substantially air-proof bulkhead between the first and second parts ( 18 , 19 ) of the engine house ( 8 ).

11. Drilling unit according to claim 10 , characterized in that the partition wall ( 17 ) abuts closely against the chassis along an inner periphery thereof.

12. Drilling unit, comprising a chassis ( 3 , 4 ) and a drilling machine ( 1 , 2 ) arranged in front of the chassis, the chassis encasing an engine house ( 8 ), in which an engine ( 9 ) is arranged as well as at least one cooler ( 14 ) and at least one fan ( 15 ), the drilling unit comprising at least one partition wall ( 17 ) that divides the engine house ( 8 ) into a first part ( 18 ), which accommodates the engine ( 9 ), and a second part, which accommodates said cooler ( 14 ) and fan ( 15 ), and that the partition wall ( 17 ) divides the engine house ( 8 ) into a front part ( 18 ) and a rear part ( 19 ), wherein the first part ( 18 ) of the engine house ( 8 ) forms the front part and the second part ( 19 ) of the engine house ( 8 ) forms the rear part, and the partition wall ( 17 ) abuts closely against the chassis along an inner periphery thereof.

13. Drilling unit, comprising a chassis ( 3 , 4 ) and a drilling machine ( 1 , 2 ) arranged in front of the chassis, the chassis encasing an engine house ( 8 ), in which an engine ( 9 ) is arranged as well as at least one cooler ( 14 ) and at least one fan ( 15 ), the drilling unit comprising at least one partition wall ( 17 ) that divides the engine house ( 8 ) into a first part ( 18 ), which accommodates the engine ( 9 ), and a second part, which accommodates said cooler ( 14 ) and fan ( 15 ), and that the partition wall ( 17 ) divides the engine house ( 8 ) into a front part ( 18 ) and a rear part ( 19 ), wherein the first part ( 18 ) of the engine house ( 8 ) forms the front part and the second part ( 19 ) of the engine house ( 8 ) forms the rear part, and the chassis ( 3 , 4 ) in the part that encases the second part ( 19 ) of the engine house ( 8 ) is provided with at least one air inlet opening ( 20 ).

14. Drilling unit according to claim 13 , characterized in that said at least one air inlet opening ( 20 ) is arranged in at least one side wall or roof of the chassis

15. Drilling unit according to claim 14 , characterized in that said air inlet opening ( 20 ) is arranged both in said at least one side wall and the roof.

16. Drilling unit, comprising a chassis ( 3 , 4 ) and a drilling machine ( 1 , 2 ) arranged in front of the chassis, the chassis encasing an engine house ( 8 ), in which an engine ( 9 ) is arranged as well as at least one cooler ( 14 ) and at least one fan ( 15 ), the drilling unit comprising at least one partition wall ( 17 ) that divides the engine house ( 8 ) into a first part ( 18 ), which accommodates the engine ( 9 ), and a second part, which accommodates said cooler ( 14 ) and fan ( 15 ), and that the partition wall ( 17 ) divides the engine house ( 8 ) into a front part ( 18 ) and a rear part ( 19 ), wherein the first part ( 18 ) of the engine house ( 8 ) forms the front part and the second part ( 19 ) of the engine house ( 8 ) forms the rear part, said drilling unit further comprising means for ventilating the first part of the engine house.

17. Drilling unit according to claim 16 , characterized in that said means comprises an exhaust-gas-driven-ejector.

18. Drilling unit according to claim 16 , characterized in that said means comprises a fan.

19. Drilling unit according to claim 17 , characterized in that said means comprises a fan.