Traction device and method for paying out and retrieving a flexible line
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B66D-001/30
B66D-001/74
출원번호
US-0643973
(2011-04-28)
등록번호
US-8919737
(2014-12-30)
우선권정보
NL-2004631 (2010-04-29)
국제출원번호
PCT/NL2011/050290
(2011-04-28)
§371/§102 date
20121026
(20121026)
국제공개번호
WO2011/136650
(2011-11-03)
발명자
/ 주소
Balder, Thomas
Van Zandwijk, Cornelis
Benard, Cornelis
출원인 / 주소
Heerema Marine Contractors Nederland B.V.
대리인 / 주소
Hoffmann & Baron, LLP
인용정보
피인용 횟수 :
0인용 특허 :
5
초록▼
A traction device for paying out and retrieving a flexible line including a line mover, wherein the line mover includes at least one movable friction surface, the friction surface in total defines at least two arc sections configured to move the line along with the arc sections, in use the line is w
A traction device for paying out and retrieving a flexible line including a line mover, wherein the line mover includes at least one movable friction surface, the friction surface in total defines at least two arc sections configured to move the line along with the arc sections, in use the line is wound around the friction surface such that the line has a first contact area being in contact with the first arc section and a second contact area being in contact with the second arc section, and the traction device includes a line controller coupled to the line between the first contact area and the second contact area and configured to control the velocity with which the line in use is fed to the second arc section, and also a method and use of the traction device.
대표청구항▼
1. A traction device for paying out and retrieving a flexible line, said traction device comprising a line mover wherein: the line mover comprises at least one movable friction surface;the at least one friction surface in total defines at least two arc sections configured to move the line along with
1. A traction device for paying out and retrieving a flexible line, said traction device comprising a line mover wherein: the line mover comprises at least one movable friction surface;the at least one friction surface in total defines at least two arc sections configured to move the line along with said arc sections;in use the line is wound around said at least one friction surface such that the line comprises a first contact area being in contact with the first arc section and a second contact area being in contact with the second arc section; andthe traction device comprises a line controller coupled to the line between the first contact area and the second contact area as seen along that part of the line between the first contact area and the second contact area, and configured to control a velocity (v3) with which the line in use is fed to the second arc section, wherein the velocity (v3) with which the line is fed to the second arc section is adjusted to a second arc section velocity with which said second arc section moves for compensating a first arc section strain of the line occurring during a passing of the first arc section, the line controller being configured to adjust the length of the part of the line extending between the first contact area and the second contact area. 2. The traction device according to claim 1, wherein the line controller is configured to control the velocity (v3) with which the line in use is fed to the second arc section for compensating the first arc section strain of the line. 3. The traction device according to claim 1, wherein the line controller is configured such that the velocity (v3) with which the line is fed to the second arc section differs from a velocity (v2) with which the line is discharged from the first arc section. 4. The traction device according to claim 1, wherein the line controller is configured to adjust the velocity (v3) with which the line is in use fed to the second arc section to the second arc section velocity with which said second arc section moves. 5. The traction device according to claim 1, wherein the line controller is configured to exert such a force to a part of the line extending between the first contact area and the second contact area that the line at the first contact area and second contact area does not slip over the first arc section and the second arc section, respectively. 6. The traction device according to claim 1, wherein the line controller comprises a movable weight member coupled to line between the first contact area and the second contact area. 7. The traction device according to claim 1, wherein the line controller comprises: a movable passive rotation sheave coupled to line between the first contact area and the second contact area;a rotation sheave mover for moving the passive rotation sheave; anda rotation sheave control for controlling the movement of passive rotation sheave. 8. The traction device according to claim 7, wherein the rotation sheave mover comprises one or more hydraulic cylinders. 9. A traction device for paying out and retrieving a flexible line, said traction device comprising a line mover wherein: the line mover comprises at least one movable friction surface;the at least one friction surface in total defines at least three arc sections configured to move the line along with said arc sections;in use the line is wound around said at least one friction surface such that the line comprises a first contact area being in contact with the first arc section, a second contact area being in contact with the second arc section and a third contact area being in contact with the third arc section; andthe traction device comprises a line controller coupled to the line between the first contact area and the second contact area as seen along that part of the line between the first contact area and the second contact area, and between the second contact area and the third contact area as seen along that part of the line between the second contact area and the third contact area, which line controller is configured to control a velocity (v3) with which the line in use is fed to the second arc section and a velocity (v5) with which the line in use is fed to the third arc section, wherein the velocity (v3) with which the line is fed to the second arc section is adjusted to a second arc section velocity with which said second arc section moves for compensating a first arc section strain of the line occurring during a passing of the first arc section and the velocity (v5) with which the line is fed to the third arc section is adjusted to a third arc section velocity with which said third arc section moves for compensating a second arc section strain of the line occurring during a passing of the second arc section, the line controller being configured to adjust the length of the part of the line extending between the first contact area and the second contact area and to adjust the length of the part of the line extending between the second contact area and the third contact area. 10. The traction device according to claim 9, wherein the arc sections are centrally driven in unison at a same rotational rate. 11. The traction device according to claim 9, wherein the line controller adjusts the length of the line extending between the first contact area and the second contact area and the length of the line extending between the second contact area and the third contact area independent from each other. 12. A method of paying out and retrieving a flexible line with a traction device comprising a line mover wherein: the line mover comprises at least one movable friction surface;the at least one friction surface in total defines at least two arc sections configured to move the line along with said arc sections;the line is wound around said at least one friction surface such that the line comprises a first contact area being in contact with the first arc section and a second contact area being in contact with the second arc section;the traction device comprises a line controller coupled to the line between the first contact area and the second contact area as seen along that part of the line between the first contact area and the second contact area; andthe method comprises controlling a velocity (v3) with which the line is fed to the second arc section by the line controller, wherein the velocity (v3) with which the line is fed to the second arc section is adjusted to a second arc section velocity with which said second arc section moves for compensating a first arc section strain of the line occurring during a passing of the first arc section; andadjusting the length of the part of the line extending between the first contact area and the second contact area with the line controller. 13. The method according to claim 12, wherein method comprises controlling the velocity (v3) with which the line is fed to the second arc section by the line controller for compensating the first arc section strain of the line. 14. The method according to claim 12, wherein the velocity (v3) with which the line is fed to the second arc section by the line controller differs from a velocity (v2) with which the line is discharged from the first arc section. 15. The method according to claim 12, wherein the method comprises adjusting the velocity (v3) with which the line is fed by the line controller to the second arc section to the second arc section velocity with which said second arc section moves. 16. The method according to claim 12, wherein the method comprises exerting such a force with the line controller to a part of the line extending between the first contact area and the second contact area that the line at the first contact area and second contact area does not slip over the first arc section and the second arc section, respectively. 17. A method of paying out and retrieving a flexible line with a traction device comprising a line mover wherein: the line mover comprises at least one movable friction surface;the at least one friction surface in total defines at least three arc sections configured to move the line along with said arc sections;the line is wound around said at least one friction surface such that the line comprises a first contact area being in contact with the first arc section, a second contact area being in contact with the second arc section and a third contact area being in contact with the third arc section;the traction device comprises a line controller coupled to the line between the first contact area and the second contact area as seen along that part of the line between the first contact area and the second contact area, and between the second contact area and the third contact area as seen along that part of the line between the second contact area and the third contact area; andthe method comprises controlling a velocity (v3) with which the line is fed to the second arc section and a velocity (v5) with which the line is fed to the third arc section by the line controller, wherein the velocity (v3) with which the line is fed to the second arc section is adjusted to a second arc section velocity with which said second arc section moves for compensating a first arc section strain of the line occurring during a passing of the first arc section and the velocity (v5) with which the line is fed to the third arc section is adjusted to a third arc section velocity with which said third arc section moves for compensating a second arc section strain of the line occurring during a passing of the second arc section;adjusting the length of the part of the line extending between the first contact area and the second contact area with the line controller; andadjusting the length of the part of the line extending between the second contact area and the third contact area with the line controller. 18. The method according to claim 17, comprising driving the arc sections centrally in unison at a same rotational rate. 19. The method according to claim 17, wherein the length of the line extending between the first contact area and the second contact area and the length of the line extending between the second contact area and the third contact area are adjusted independent from each other.
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