Traitement en cours

Veuillez attendre...

Paramétrages

Paramétrages

Aller à Demande

1. WO2020167118 - DRAGUE RÉTROCAVEUSE À CONTREPOIDS

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

Claims

1 . Vessel (1) comprising an excavator (2) for dredging or shifting soil for cleaning

watercourses, the excavator (2) comprising;

a weight balanced boom (3) hingeably supported around a boom hinge axis (7), a bucket-arm (4) hingeably connected to the boom (3), and provided with a bucket (5) and/or digging tool at a free end of the bucket-arm (4),

wherein a counterweight (6) is connected to the boom and wherein the counterweight (6) is positioned with respect to the boom (3) such that a centre of gravity (16) of the counterweight (6) is above and about vertically aligned with the boom hinge axis (7) when the bucket and/or digging tool is at a lowest digging position.

2. Vessel (1) according to claim 1 , wherein the boom (3) extends at both inboard and

outboard sides of the boom hinge axis (7) and the counterweight (6) is connected with a boom inboard section (8).

3. Vessel (1) according to a preceding claim, wherein the boom (3) is of one-piece.

4. Vessel (1) according to claim 1 , wherein the boom (3) has a longitudinal axis (10), and the boom hinge axis (7) is offset over a spacing S with respect to the boom longitudinal axis (10).

5. Vessel (1) according to a preceding claim, wherein the excavator (2) comprises a

transverse member (9) coupled with the boom (3), wherein the boom (3) is hingeably coupled with a main frame (19) through the transverse member (9).

6. Vessel (1) according to a preceding claim, wherein the counterweight (6) is fixedly

connected with the boom (3).

7. Vessel (1) according to a preceding claim 2 - 6, comprising a hydraulic drive system (1 1) having a boom cylinder (12), wherein the boom cylinder (12) is coupled with the boom inboard section (8) to drive the boom (3).

8. Vessel (1) according to claim 7, wherein the boom cylinder (12) is coupled with the boom (3) proximate a free end (13) of the boom inboard section (8).

9. Vessel (1) according to claim 7 or 8, wherein the boom cylinder (12) is hingeably

supported above the boom hinge axis (7).

10. Vessel (1) according to a preceding claim, wherein the excavator (2) comprises a turntable (14) for supporting the excavator (2) and to allow the excavator (2) to rotate around a vertical rotating axis (15), and wherein the centre of gravity (16) of the counterweight (6) is above the turntable when the bucket (5) and/or digging tool is at its lowest digging position.

1 1 . Vessel (1) according to claim 10, wherein the centre of gravity (16) of the counterweight (6) is about vertically aligned with the vertical rotating axis (15) when the bucket (5) and/or digging tool is at its lowest digging position.

12. Vessel (1 ) according to a preceding claim, wherein the vessel comprises equipment (20) coupled with the excavator for driving the excavator, wherein the equipment is at least partly, in particular entirely, arranged below a deck level.