Title:
POSITION FINE-ADJUSTING DEVICE FOR SUSPENDED LOAD
Document Type and Number:
Japanese Patent JP2023179077
Kind Code:
A
Abstract:
To provide a position fine-adjusting device for a suspended load, which can set a fine-adjusting distance longer.SOLUTION: The position fine-adjusting device comprises: a cylinder mechanism 100, the inside of which is divided into a head side oil chamber 2 and a rod side oil chamber 3 by a piston 4; and a hydraulic closed circuit 22 for connecting the head side oil chamber 2 and the rod side oil chamber 3. The cylinder mechanism 100 comprises: a piston rod 5 having one end fixed to the piston 4 and the other end protruding from a rod side end surface 21 through the rod side oil chamber 3 and having a rod side fitting part 6 at ta tip of the projected other end side; a spring 7 biasing the piston 4 toward the head side oil chamber 2; a plurality of ports 8 provided in a peripheral surface of a cylinder tube 1; and a head side fitting part 10 provided in a head side end surface 9. The hydraulic closed circuit 22 comprises: an oil path 23 for connecting the head side oil chamber 2 and the rod side oil chamber 3; an accumulator 11 connected to the midway of the oil path 23; and a circuit on-off valve 13 for opening/closing the oil path 23.SELECTED DRAWING: Figure 1
Inventors:
TAKAHASHI HIRONORI
Application Number:
JP2022092137A
Publication Date:
December 19, 2023
Filing Date:
June 07, 2022
Export Citation:
Assignee:
FURUKAWA UNIC CORP
International Classes:
B66C1/34
Attorney, Agent or Firm:
田中 秀▲てつ▼
Hajime Hirose
Tetsuya Mori
Hajime Hirose
Tetsuya Mori
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