Title:
BOAT LIFTING DEVICE
Document Type and Number:
Japanese Patent JP3822716
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a boat lifting device capable of coping with the case that the load balance for a pair of cradles is lost, simplifying the structure, shrinking the installation space, and reducing the number of part items.
SOLUTION: A pair of cradles 3 of a boat lifting device are integrally connected by a top pipe connector 4, a stress pipe connector 5, and a low pipe connector 6. A hydraulic cylinder 7 rotatively driving the cradles 3 is rotatably provided between the stress pipe connector 5 and a deck 2, and the low pipe connector 6 is arranged at the portions of the cradles 3 curved backward from the hydraulic cylinder 7. The tilt angles of the cradles 3 are limited by wire ropes 9 to reinforce the bearing power of the hydraulic cylinder 7. Winches 11 delivering wire ropes 10 are protruded on the outside of the cradles 3, and the delivered wire ropes 10 are directly guided to pulleys 14 protruded to the outside of the tips of the cradles 3.
Inventors:
Kenji Sato
Application Number:
JP19711397A
Publication Date:
September 20, 2006
Filing Date:
July 23, 1997
Export Citation:
Assignee:
Kayaba System Machinery Co., Ltd.
International Classes:
B63B23/06; B63B23/10; (IPC1-7): B63B23/06
Domestic Patent References:
| JP49003390A | ||||
| JP53007094U |
Attorney, Agent or Firm:
Masaki Goto