Saddle and hook system
The invention relates to a pile upending system for upending a pile such as a monopile for the foundation of offshore wind turbines, the pile upending system comprising; a pivotally mounted pile support frame having a seat for engaging an outside wall of a pile, the pile support frame being pivotable around a support frame axis of rotation for allowing the seat to support the pile during upending, a cable system for supporting an, in use outboard, end of a pile, comprising one or more tensioned or tensionable cables having an outboard end provided with a hoisting member for supporting the outboard end of the pile during upending of said pile, an outboard support system comprising a frame member for, in use, extending outboard and supporting the hoisting member of the cable system, wherein the outboard support system is arranged with respect to the pile support frame such that the frame member extends transverse with respect to the support frame axis of rotation for arranging the hoisting member at a distance from the seat and aligned with the seat such that a pile may engage the hoisting member upon longitudinal movement of the pile along the seat.
1. A pile upending system for upending a pile, the pile upending system comprising;
a pivotally mounted pile support frame having a seat for engaging an outside wall of a pile, the pile support frame being pivotable around a support frame axis of rotation for allowing the seat to support the pile during upending,
a cable system comprising one or more tensioned or tensionable cables and a hoisting member, the hoisting member connected to the outboard end of the pile for supporting the outboard end of the pile during upending of said pile, and the, one or more tensioned or tensionable cables having an outboard end connected to the hoisting member, and
an outboard support system comprising a frame member for, in use, extending outboard and supporting the hoisting member of the cable system,
wherein the outboard support system is arranged with respect to the pile support frame such that the frame member extends transverse with respect to the support frame axis of rotation for arranging the hoisting member at a distance from the seat and aligned with the seat such that a pile engages the hoisting member upon longitudinal movement of the pile along the seat.
2. The pile upending system according to claim 1 , wherein a frame member inboard end is coupled with the pile support frame such that the frame member pivots with the pile support frame.
3. The pile upending system according to claim 2 , wherein the frame member forms a unit with the pile support frame such that the frame member pivots with the pile support frame in unity.
4. The pile upending system according to claim 1 , wherein the pile support frame is pivotally mounted to allow the support frame to rotate around the support frame axis of rotation and around axes transverse with respect to the support frame axis of rotation.
5. The pile upending system according to claim 1 , comprising a support frame constraint system for constraining the pile support frame movement in that the support frame is allowed to rotate around a defined axes transverse with respect to the support frame axis of rotation.
6. The pile upending system according to claim 5 , wherein the support frame constraint system extends on both opposite sides of the pivotal mount of the pile support frame.
7. The pile upending system according to claim 5 , wherein the support frame constraint system comprises a cam in cooperation with a slotted hole.
8. The pile upending system according to claim 1 , wherein the frame member is extendable along its longitudinal axis.
9. The pile upending system according to claim 1 , comprising a drive system, coupled with the pile support frame for imposing an angular position on the support frame around the support frame axis of rotation.
10. The pile upending system according to claim 9 , wherein the drive system comprises an hydraulic cylinder.
11. A vessel comprising a pile upending system according to claim 1 .
12. The vessel according to claim 11 , wherein the support frame axis of rotation extends outboard such that the frame member may takes a vertical stance.
13. The pile upending system according to claim 1 , wherein the hoisting member comprises a recess to accommodate a portion of the pile wall.
14. The pile upending system according to claim 1 , wherein the hoisting member comprises one or more hooks connected to an outboard end of the one or more tensioned or tensionable cables.
15. The pile upending system according to claim 1 , wherein the hoisting member connects to the one or more tensioned or tensionable cables through a rotatable connection.
16. A method for upending a pile, in particular a monopile for the foundation of offshore wind turbines, the method comprising;
pivotable supporting the pile for pivoting around a support frame axis of rotation,
supporting an outboard end of the pile through a hoisting member connecting to an outboard end of a pile during upending of said pile, said cable system further comprising a tensioned or tensionable cable having an outboard end which connects to the hoisting member,
supporting the hoisting member of the cable system through an outboard support system comprising an frame member for, in use, extending outboard,
wherein the outboard support system is arranged with respect to the pile support frame such that the frame member extends transverse with respect to the support frame axis of rotation for arranging the hoisting member at a distance from the seat and aligned with the seat such that a pile engages the hoisting member upon longitudinal movement of the pile along the seat.