HYDRAULIC CIRCUIT OF AUGER DRIVING DEVICE TURNING MECHANISM

Japanese Patent JP3151608

B2

PROBLEM TO BE SOLVED: To synchronously turn an auger driving device and a lower swing preventive device by hydraulic circuits having the simple constitution.
SOLUTION: An auger driving device arranged in a leader of a pile driver so as to be ascendable/descendable, is supported on an auger driving device turning link mechanism 13 composed of a pair of left and right links and cylinders 12L and 12R to respectively rotate the respective links, and a lower swing preventive device arranged under the leader is supported by a lower swing preventive device turning link mechanism 14 composed of a pair of left and right links and cylinders 17L and 17R to respectively rotate the respective links. The right side cylinder 12R of the auger driving device turning link mechanism 13 and the right side cylinder 17R of the lower swing preventive device turning link mechanism 14, are connected to each other by a hydraulic circuit 19 having a dummy cylinder 21 having the same capacity as both cylinders, and the left side cylinder 12L of the auger driving device turning link mechanism 13 and the left side cylinder 17L of the lower swing preventive device turning link mechanism 14, are connected to each other by a hydraulic circuit 20 having a dummy cylinder 23 having the same capacity as both cylinders.

Shinji Kurimoto

JP6867497A

April 03, 2001

March 21, 1997

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Nippon Vehicle Manufacturing Co., Ltd.
Naruyuki Industry Co., Ltd.

E02F5/02; E21B3/02; (IPC1-7): E02F5/02

JP58156629A

Kazuhiko Kido (1 person outside)
Kazuhiko Kido

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