Abstract:
PURPOSE: A turning type water gate capable of removing impurities easily is provided to prevent the water or impurities falling down over the top of a water gate from flowing in a lower space at the back of a water gate, and to use safely without the damage, failure and malfunction of a water gate. CONSTITUTION: A turning type water gate capable of removing impurities is formed by coupling the bottom of a water gate(10) to a lower frame(2a) provided to the bottom(1) of a water gate frame formed on two sides of an irrigation canal by a hinge, coupling the rear end of a hydraulic cylinder to the lower bottom of the water gate by a hinge(21), coupling the top of the hydraulic cylinder to the backside of the water gate by a hinge(22) or an actuator, and installing an impurity removal plate(100) to the water gate to be operated simultaneously with the opening and closing of the water gate.
Abstract:
PURPOSE: A link type elevation drive device for a hatch cover is provided to rapidly operate the elevation of the hatch cover for opening and closing. CONSTITUTION: A link type elevation drive device for a hatch cover comprises a driving source(32), a rotary link(36), a connection link(34), a first driving link(40), a second driving link and a groove(76). The driving source horizontally drives and is located in the side of a bath(14). One end of the rotary link is hinged with the side of the bath separated in parallel with the driving source to rotate. The connection link is arranged between the driving source and the rotary link. The first driving link is hinged with one end of the connection link perpendicularly separated from the hinge with which the driving source and the rotary link are connected. One end of the second driving link is hinged with one end of a quarter link(70) branched from the first driving link to rotate. The groove is formed in the first and second driving links.
Abstract:
PURPOSE: An overturning type movable weir is provided to improve the durability and to prevent damage to a water gate by preventing the delivering of the hydraulic force of a hydraulic cylinder to a water gate. CONSTITUTION: An overturning type movable weir comprises a water gate(10), a rotary shaft, a support bracket, a driven link(40), a movable link(50), and a cylinder part. The water gate blocks up the river water flowing in the upper stream of a river. The rotary shaft is fixed to the lower part of the water gate. The movable link is fixed to the rotary shaft to rotate.
Abstract:
PURPOSE: A hydraulic lifting type floodgate device is provided to reduce construction costs because an upper structure is not required and to accurately open and close multiple gates. CONSTITUTION: A hydraulic lifting type floodgate device comprises a gate(10), lifting guides(20), hydraulic cylinders(30), first wires(40), and second wires(50). The gate opens and closes a waterway. The lifting guides are formed in both ends of the gate and lift the gate. The hydraulic cylinders are securely fixed to the top of the lifting guides and draw in/out piston rods downward. One end of the first and second wires is fixed to the bottom end of the piston rods, and the other ends are fixed to the top of the gate.
Abstract:
PURPOSE: A conduction floodgate is provided to prevent foreign materials from being deposited on the bottom of a floodgate when a waterway is opened. CONSTITUTION: A conduction floodgate comprises a floodgate body(10), a drive unit, a blocking/supporting bar(30), and an undercurrent water outlet unit(40). The floodgate body opens or blocks a river. The drive unit forcefully opens or blocks the floodgate body. The blocking/supporting bar blocks water and foreign materials. The undercurrent water outlet unit has a drainpipe(41), a rotating cylinder(42), a foreign material blocking plate(46), a rod(43), and a blocking plate(44).
Abstract:
PURPOSE: A hydraulic turn-over floodgate is provided to prevent the contamination of water in the river bottom or reservoir due to the stagnation of water or the accumulation of foreign materials. CONSTITUTION: A hydraulic turn-over floodgate comprises a floodgate body(110), a rotation guide member(150), a first actuator(210), a second actuator(220) and a housing(130). The floodgate body is installed in the lower part of a discharge passage(180) of a floodgate(100) and includes a water stop member(118) and a fixed shaft(114). The rotation guide member guides the rotation of the floodgate body around the fixed shaft. The first actuator rotates the upper part of the floodgate body with the linear motion of a first hydraulic cylinder(213). The second actuator rotates the lower part of the floodgate body with the linear motion of a second hydraulic cylinder(223). The housing provides a space for receiving the rotation guide member and the first and second actuators.
Abstract:
PURPOSE: An environment-friendly construction method for purifying polluted river water using the effect of gravity generated depending on the mass of water molecules is provided to naturally purify polluted river water without physical, chemical, and biological treatment. CONSTITUTION: An environment-friendly construction method for purifying polluted river water using the effect of gravity generated depending on the mass of water molecules comprises working devices(2), a first lower water discharging device, and a second lower water discharging device. The working devices are formed in both sides of a concrete footing in order to operate a floodgate(1). The first lower water discharging device discharges lower water by opening the bottom end of the floodgate. The second lower water discharging device lifts the bottom end of the floodgate.
Abstract:
PURPOSE: A nature-friendly construction method for purifying polluted river water using a high-tech water gate is provided to purify polluted water naturally. CONSTITUTION: A nature-friendly construction method for purifying polluted river water using a high-tech water gate comprises following steps. When a water gate(1) is closely attached on the bottom of the river, a cylinder rod(20) coupled with a cylinder(21) for controlling the water gate is extended. An operating link(19) for controlling the water gate coupled with the cylinder rod moves to the upstream of the river. A link(17) for controlling the water gate axis-connected to a link(18) for controlling the water gate moves to the upstream of the river. The waterway of the river is blocked and the river water is stored by standing the water gate due to the drive of a roller formed at the upper end of the link for controlling the water gate. A cylinder rod(12) combined with a cylinder(11) for adjusting the drain water is shrunk.
Abstract:
PURPOSE: A supporting apparatus for a large cylinder is provided to support a large cylinder for a dam floodgate stably from both sides of the large cylinder. CONSTITUTION: A supporting apparatus for a large cylinder comprises a support frame(400), a coupling part(510), a cylinder coupling member(500), and a fixing member(530). The support frame including a fixed frame(410), a receiving space and a housing(420) is installed in a specific area of a dam structure. The coupling part is connected to the end of the cylinder. The cylinder coupling member is formed on both sides of the coupling part, and has a pivot(520) coupled to the support frame. The fixing member cross-couples the cylinder and the coupling part.
Abstract:
PURPOSE: A wide floodgate is provided to prevent buckling of the gate resulting from water pressure by supporting the gate with a support having the same length as the gate. CONSTITUTION: A wide floodgate(100) comprises a base structure(110), a gate unit(120), and a main support(130). The base structure includes a base bottom(112) provided along the width of a river where the floodgate is to be constructed, and a beam which is extended toward the end of the base bottom adjacent to each banks prepared on both edges of the river and forms a waterway(116). The gate unit includes a pair of hollow chambers(122) which are fixed to the extended end of each beam, and a gate(126) which is supported to the chamber on both sides and selectively opens the waterway.