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
【課題】微調整距離を長めにすることが可能な、吊荷の位置微調整装置を提供する。【解決手段】ピストン4により内部がヘッド側油室2とロッド側油室3とに区画されたシリンダ機構100と、ヘッド側油室2及びロッド側油室3を接続する油圧閉回路22とを備え、シリンダ機構100は、一端はピストン4に固定され、他端側はロッド側油室3を経由しロッド側端面21から外部に突出し、突出した他端側の先端にロッド側取付部6を有するピストンロッド5と、ピストン4をヘッド側油室2に向けて付勢するばね7と、シリンダチューブ1の周面に設けられた複数のポート8と、ヘッド側端面9に設けられたヘッド側取付部10を備え、油圧閉回路22は、ヘッド側油室2とロッド側油室3とを接続する油路23と、油路23の途中に接続されたアキュムレータ11と、油路23を開閉する回路用開閉弁13を備える。【選択図】図1
POSITION FINE-ADJUSTING DEVICE FOR SUSPENDED LOAD
吊荷の位置微調整装置
2023-12-19
Patent
Electronic Resource
Japanese
IPC: | B66C Krane , CRANES |
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