Title:
AUTO-GATE
Document Type and Number:
Japanese Patent JP3278690
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an auto-gate returning to a normal operation state by making a door body reciprocate with a piston rod of a hydraulic cylinder on the top of a parallelepipedic frame body as necessary in addition to prevent a backflow by closing a flowing outlet of the door body with the rising of the abnormal water level in a main river side and making the sediment on the outside of the door body flow into the main river side with the water of a branch river side.
SOLUTION: A door body 44 is provided at one end of a bell-crank 33 mounted on a horizontal shaft 32 of the top of a parallelepipedic frame body 28, and a balance weight 35 is provided at the other end. A joint pin between a piston rod 42 extended from a hydraulic cylinder 41 pivoted on the top of the parallelepipedic frame body 28 and a guide arm 45 borne on the horizontal shaft 32 is alternately interlocked with a pair of stoppers separated from a torque arm 47 provided to the horizontal shaft 32, and the door body 38 is forcedly capable of being reciprocated by the hydraulic cylinder 41.
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Inventors:
Takeuchi Hiroyuki
Application Number:
JP31395398A
Publication Date:
April 30, 2002
Filing Date:
October 19, 1998
Export Citation:
Assignee:
Asahi Iron Works Co., Ltd.
International Classes:
E02B7/20; E02B7/44; (IPC1-7): E02B7/20; E02B7/44
Domestic Patent References:
| JP1111729U | ||||
| JP486844Y1 |
Attorney, Agent or Firm:
Yoshiyuki Misono
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