GATE CLOSING APPARATUS

PROBLEM TO BE SOLVED: To provide a gate closing apparatus capable of closing a gate such as a land lock and a tide gate with a configuration using a mechanical component without using any electricity as driving force, capable of keeping the gate's movement speed being approximately constant, and capable of adjusting the gate's movement speed, at the time of concern about water damage such as a tidal wave caused by a typhoon etc. or a seismic sea wave caused by an earthquake etc. or the similar time.SOLUTION: A gate closing apparatus E comprises: a first weight 1 movable in the vertical up-and-down direction; linear members 2, 2' for suspending and supporting the first weight; a second weight 3 that is interlocked through the linear members 2, 2' to move in the direction reverse to the first weight 1's movement direction; and power transmission means 4 for transmitting force generated in the first weight 1 moving vertically downward to a gate D.SELECTED DRAWING: Figure 1 【課題】台風などによる高潮や、地震などによる津波など水害が懸念されるときなどに、陸閘、防潮扉などの門扉を、駆動力として電気を一切使用せずに機械部品の構成によって閉めることができ、門扉の移動速度がおおよそ一定に保つことができ、門扉の移動速度の調節も行うことができる閉門装置を提供する。【解決手段】鉛直上下方向に移動可能である第一錘１と、第一錘１を吊持する線状部材２・２´と、線状部材２・２´を介して連動し、第一錘１の移動方向とは反対に移動する第二錘３と、第一錘１が鉛直下向きに移動するときに発生する力を門扉Ｄに伝える動力伝達手段４を備える閉門装置Ｅ。【選択図】図１