Patent ID: 7744309

Claim:
A hydraulic power generating system comprising: a looped rail; a plurality of pulleys moving along said looped rail; a plurality of water receiving plates, each being installed with a respective one of said plurality of pulleys; side plates which are hingedly coupled to left and right side portions of each of said plurality of water receiving plates by hinge shafts; and spread adjusting devices which make said side plates spread against a direction of water flow, each of said spread adjusting devices includes: a lock releasing part which releases a locking state of a locking device mounted to each of said side plates; and a side plate rotating part which rotates each of said side plates to spread against the direction of water flow; said locking device includes a stopper elastically mounted to each of said side plates and insertion holes formed at each of said plurality of pulleys; said lock releasing part includes a guide bar formed at said stopper and a guide rail mounted to a fixing frame; and said side plate rotating part includes a push bar mounted to said fixing frame and elastically supported by a spring.