Device and method for lowering or lifting a load in water
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B63C-011/00
B63C-011/42
E21B-041/00
E21B-041/04
B63B-021/22
출원번호
US-0626214
(2009-11-25)
등록번호
US-8414241
(2013-04-09)
우선권정보
DE-10 2008 059 805 (2008-12-01)
발명자
/ 주소
Laenge, Walter
출원인 / 주소
Liebherr-Werk Nenzing GmbH
대리인 / 주소
Alleman Hall McCoy Russell & Tuttle LLP
인용정보
피인용 횟수 :
1인용 특허 :
8
초록▼
The present disclosure relates to a device for lifting and lowering a load in water, including a hoisting gear with a first hoisting rope and a storage drum with a second hoisting rope, which preferably are arranged on a floating unit. In accordance with the present disclosure, a hoisting gear frame
The present disclosure relates to a device for lifting and lowering a load in water, including a hoisting gear with a first hoisting rope and a storage drum with a second hoisting rope, which preferably are arranged on a floating unit. In accordance with the present disclosure, a hoisting gear frame is fastened to the first hoisting rope, whose buoyancy in water is variably adjustable. Furthermore, the present disclosure relates to a method for lifting and lowering a load in water by using such a device.
대표청구항▼
1. A device for lifting and lowering a load in water, comprising: a hoisting gear with a first hoisting rope and a storage drum with a second hoisting rope, which are arranged on a floating unit; anda hoisting gear frame, the hoisting gear frame being fastened to the first hoisting rope, and the hoi
1. A device for lifting and lowering a load in water, comprising: a hoisting gear with a first hoisting rope and a storage drum with a second hoisting rope, which are arranged on a floating unit; anda hoisting gear frame, the hoisting gear frame being fastened to the first hoisting rope, and the hoisting gear frame having a variably adjustable buoyancy in water,wherein the variably adjustable buoyancy of the hoisting gear frame is an overpressure hoisting gear frame which includes an air cell, and wherein the overpressure hoisting gear frame includes a variably adjustable buoyancy in water and has a traction sheave drive arranged therein, which drives the second hoisting rope. 2. The device according to claim 1, wherein the traction sheave drive comprises at least two traction sheaves. 3. The device according to claim 2, wherein at least two traction sheaves of the traction sheave drive are independently adjustable. 4. The device according to claim 3, wherein the second hoisting rope is guided from the storage drum over one or more of the traction sheaves to the load and is fastened to the load with its rope end. 5. The device according to claim 4, wherein an unloaded end of the second hoisting rope is loosely guided from the one or more traction sheaves of the overpressure hoisting gear frame to the storage drum on the floating unit. 6. The device according to claim 1, wherein the second hoisting rope in the overpressure hoisting gear frame is driven by a hoisting winch, wherein the second hoisting rope is guided from this hoisting winch to the load and is fastened to the hoisting winch. 7. The device according to claim 1, wherein the second hoisting rope is a fiber rope. 8. The device according to claim 1, wherein the second hoisting rope is a steel rope. 9. The device according to claim 1, wherein a holding brake is provided, which directly acts on the second hoisting rope. 10. The device according to claim 1, wherein an additional cable drum for a supply cable is arranged on the floating unit. 11. The device according to claim 10, wherein drive units for the storage and cable drums are arranged on the floating unit individually or jointly. 12. The device according to claim 11, wherein said supply cable comprises a control line and a power supply line. 13. The device according to claim 12, wherein the supply cable is connected to the overpressure hoisting gear frame and the traction sheave drive or hoisting winch drive arranged therein is controlled by the control line and supplied with electricity by the power supply line. 14. The device according to claim 1, wherein said hoisting gear is a crane with at least one hoisting winch. 15. The device according to claim 14, wherein the hoisting winch of the hoisting gear comprises a heave compensation. 16. The device according to claim 1, wherein at least one further hoisting gear is provided for lifting the load with an additional hoisting rope or the overpressure hoisting gear frame, which selectively comprises a heave compensation. 17. The device according to claim 16, wherein the further hoisting gears are arranged separate from the first hoisting gear on a further independent floating unit. 18. The device according to claim 12, wherein the air cell in the overpressure hoisting gear frame is controlled by the control line of the supply cable. 19. The device according to claim 1, further comprising a measuring device for measuring a resultant force applied on the first hoisting rope, the measuring device arranged on the first hoisting rope. 20. The device according to claim 19, wherein control of the buoyancy of the overpressure frame is effected in dependence on the measured force on the first hoisting rope. 21. The device according to claim 20, wherein control of the buoyancy is controlled automatically by an electric control unit. 22. A method for lifting and lowering a load in water with a device comprising the following steps: a. picking up the load from a transportation unit by a first hoisting rope of a first hoisting system fastened to the load and connected with a second hoisting system or crane and lowering the load through a splash zone down to a defined depth at which the water is calm;b. tightening a second hoisting rope of the second hoisting system by a traction sheave drive or a hoisting winch of an overpressure hoisting gear frame;c. controlling a buoyancy of the overpressure hoisting gear frame;d. knocking off the hoisting rope of the second hoisting system or crane from the load; ande. lowering the load by the traction sheave or hoisting winch drive down to a predefined deposition point. 23. The method according to claim 22, wherein the controlling of the buoyancy of the overpressure hoisting gear frame is based on a resultant residual force on the first hoisting rope. 24. The method according to claim 23, further comprising providing heave compensation of the first hoisting system or crane to ensure a vertical position of the overpressure hoisting gear frame in water with respect to a watercourse bed. 25. The method according to claim 22, further comprising providing heave compensation of the first hoisting system or crane, wherein said heave compensation and hence a vertical position of the overpressure hoisting gear frame in water with respect to a watercourse bed is ensured by the second hoisting system or crane.
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이 특허에 인용된 특허 (8)
Bernard, Fran.cedilla.ois, Apparatus and method for deploying an object or a load on a seabed.
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