Manual light water gate

Abstract

A manual light water gate includes a water gate and an opening and closing device as main components combined together. A transmitting rod having its lower end connected to the water gate and its upper portion inserted in the opening and closing device is controlled by stop members of the opening and closing device so as to move the water gate to open and close. Such a design is easy in handling and capable to be provided across a ditch, an irrigation canal, etc. available for adjusting its water level.

What is claimed is:  
     
         1 . A manual light water gate comprising; 
 A water gate fitted in a gate opening formed by two opposite vertical inner walls of a concrete frame, said water gate having a plurality of pulleys provided at two opposite outer sides for smoothly sliding up and down in said gate opening, several water seals provided at proper positions and a connector fixed on a top center for a transmitting rod to be pivotally connected with;    An opening and closing device contained in a machine housing, said machine housing fixed on an upper side of said concrete frame, said opening and closing device having two horizontal separating plates respectively having a rod hole for said transmitting rod to pass through, three stop members respectively having a rod hole for said transmitting rod to pass through, and a spring provided between each said separating plate and each said stop member, said springs activated to push against said three stop members by resilient force and then produce a frictional resistance between said transmitting rod and said rod holes of said stop members, said machine housing further provided with two operating levers, each said operating lever having a support shaft as a pivot and a press wheel activated by said operating lever to press a corresponding one of said stop members to let said stop member and said transmitting rod form different angles, thus producing a proper friction between said rod holes and said transmitting rod, said friction enabling said stop members to drive said transmitting rod together with said water gate to move up and down smoothly.    
     
     
         2 . The manual light water gate as claimed in  claim 1 , wherein cams replace the press wheels.