JP3463980B2 - Automatically undulating gate - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floating type undulating gate installed across a river such as a tidal section for both tidal protection and water storage.

[0002]

2. Description of the Related Art A floating body type undulating gate has been installed across a river in a tidal section in order to prevent the tide from going up automatically and without power. This gate has a structure that automatically rises due to buoyancy or water pressure acting on the door body as the water level on the downstream side rises, and prevents water on the downstream side from entering the upstream side. In addition, a hydraulic cylinder device or a wire winding type opening / closing device is separately attached to this gate, and a function to store river water for the purpose of agricultural water, domestic water, etc. is provided upstream of the gate by arbitrarily raising the door. I have been using it.

[0003]

[Problems to be Solved by the Invention]
The stand-up operation of the door body due to the rise of the water level on the downstream side and the stand-up operation by the hydraulic cylinder device or the wire winding type opening / closing device have been set as separate functions. Therefore, the door body that has been erected by the rise of the downstream water level has a mechanism that collapses at the same time when the downstream water level falls. A separate operation is required to raise the door for the purpose of storing water. In addition, since the hydraulic cylinder and wire-winding switchgear are not related to the buoyancy acting on the door, even if the upstream water flows to the downstream side when the water level in the river increases, the downstream water level remains constant. If so, the door body floats in the water, and dust and the like that have flowed down the river may be entangled with the door body, impeding the smooth flood flow function of the river.

12 to 15 are general views of conventional floating type undulating gates. 35 is a floating type door body, 36 is a hydraulic cylinder (plunger type), 37 is a side door fitting, 38
Is a bearing metal, 39 is a standing upper limit stopper, and 40 is a hydraulic operating device. FIG. 12 shows a state of standing upright by the water level on the downstream side. Since the door body and hydraulic cylinder are not connected, the door body can stand freely due to buoyancy and water pressure due to the downstream water level.

FIG. 13 shows a state in which the buoyancy has disappeared because the water level on the downstream side has dropped, and the door body has fallen down. FIG. 14 shows a state in which the hydraulic operating device is operated, the hydraulic cylinder is extended, and the gate is erected in order to store river water on the upstream side. FIG. 15 shows a state where the door body floats in the water due to the balance between the upstream and downstream water levels. Even if the water level on the upstream side rises, if there is a certain water level on the downstream side, the gate will not completely lie down, but will float due to fluctuations in the upstream and downstream water levels in the intermediate standing state. This condition obstructs the downflow section when the river is flooded. In addition, the flow of dust and debris is entangled in the door, which hinders the good flood drainage function of the river.

The present invention has a function of automatically and unpowered standing by the rise of the downstream water level, and the ability to maintain the standing state without any operation.
It is an object of the present invention to provide an automatically operated undulating gate that does not obstruct the flow section of a river by forcibly causing the door body to lie down on the riverbed by an arbitrary operation.

[0007]

In order to solve the above-mentioned problems, the automatic operation undulating gate of the present invention is installed across a river such as a tidal section, and is generated in the door body as the downstream water level rises. The buoyancy is used to erect the gate to prevent water downstream from the gate from entering the upstream side, such as when the tide runs up, and
A double-rod hydraulic cylinder is attached to the torque arm attached to the drive shaft for rotating the door body in the actuator chamber provided on the side of the waterway, and a check valve is provided so that only the normal rising direction can be freely performed. By setting the hydraulic circuit having the above, it is possible to freely perform the standing operation of the door body due to the rise of the water level on the downstream side, keep the standing state as it is, and store water in the upstream side. In the check valve of the hydraulic circuit, when the water level on the downstream side exceeds a predetermined level,
Alternatively, it is possible to provide means for opening the door body in a standing state in an inclined state by operating at a preprogrammed time. Further, the hydraulic circuit may be provided with a means for opening the door body in a standing state in an inclined state by being manually operated.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION According to the present invention, a torque arm attached to a drive shaft for rotationally driving a floating body type undulating door member in an actuator chamber provided on the side of a water channel, and a double rod type torque arm. Install and install the hydraulic cylinder. The hydraulic cylinder is a trunnion type, which is mounted on a strong base. These double rod hydraulic cylinders are made to have the same front and rear rod diameters so that the amount of oil discharged by the expansion and contraction of the rods will be equal to the amount of oil supplied, and the hydraulic circuit connected to the hydraulic cylinders will have an arbitrary hydraulic cylinder. In addition to the operation circuit that expands and contracts, the hydraulic cylinder can normally operate freely only in the direction in which the door stands.
A circuit in which the front and rear circuits of the hydraulic cylinder are connected by a one-way control valve is provided. By this mechanism, the water level on the downstream side rises, and it automatically and unpoweredly stands up, and it has the function of holding the standing state without any operation, and at the same time, it is possible to perform any standing up and down operation. It is possible to provide an automatically operating undulating gate that does not obstruct the flow section of the river by forcing the door body to lie down on the riverbed when the river is flooded.

[0009]

EXAMPLES Examples of the present invention will be described below. Figure 1
2 and FIG. 2 are schematic views of the automatic operation undulating gate of the present invention. 1 (a) is a sectional view of the water channel portion, (b) is a sectional view of the actuator chamber, FIG. 2 (a) is a front view of the channel portion seen from the downstream side, and (b) is a sectional view of the automatic tipping device portion. It is a figure. In these figures, 1 is a floating type undulating door, 2 is a support metal, 3
Is a drive shaft, 4 is a torque arm, 5 is a bearing metal fitting, 6 is a double rod type hydraulic cylinder, 7 is a rod end metal fitting, 8 is a trunnion type hydraulic cylinder mount, 9 is a side door fitting, 10
Is a bottom metal fitting, 11 is a side watertight rubber, 12 is a bottom watertight rubber, 13 is a drive shaft watertight device, 14 is a standing upper limit stopper, 15 is an actuator chamber, 16 is a hydraulic operating device, 17 is an automatic tipping device, 18 Is a water conduit, and 19 is a water conduit screen.

3 to 6 show hydraulic circuit diagrams. In these figures, 20 is an oil tank, 21 is an oil pump, 22 is a 3-position 4-connection directional control valve operated by an operation lever, 2
3 is a 2-port 2-position switching valve that is also operated by the operating lever, 24 and 25 are check valves (in-line check valves), 26 is a manual switching check valve, and 27 is a float device (corresponding to fluctuations in upstream water level). ), 28 is a relief valve, 29
Is a pressure gauge, 30 is a stop valve, 31 is a line filter, and 32 is a strainer. In addition, the float device 2
7 and the relief valve 28 in combination, the automatic tipping device 17 of FIG.
The manual switching check valve 26 is opened by raising the float 27.

FIG. 4 shows a circuit diagram when the door body 1 automatically stands up by the water level on the downstream side. At this time, the directional control valve 22
Is in a neutral state, and the switching valve 23 is open. Since a force acts in the direction of extending the hydraulic cylinder by the standing rotation of the door body 1, the hydraulic oil in the hydraulic cylinder a chamber is discharged and supplied to the hydraulic cylinder b chamber through the (a) line. As a result, the piston rod of the hydraulic cylinder is free to extend. However, in this circuit, the hydraulic oil in the b chamber cannot flow out due to the check valves 24 and 26, and therefore cannot operate in the contracting direction. Therefore, even if the downstream water level drops and the buoyancy or water pressure disappears, the door body does not fall down.

FIG. 5 shows a circuit diagram when the gate automatically falls due to a rise in the upstream water level. When the upstream water level rises, the float 27 rises and opens the check valve 26. Since the force acts on the hydraulic cylinder in the direction of contraction by the torque arm, the hydraulic oil in the hydraulic cylinder b chamber is discharged through the (a) line (the circuit of the check valve 26) and in the hydraulic cylinder a chamber ( C) Hydraulic oil is supplied through the line. This circuit causes the gate to fall to a state where the upstream water level is lowered and the check valve 26 is closed by the float 27, or the torque arm acting force is lost due to water pressure balance due to the upstream and downstream water levels.

FIG. 6A shows a circuit diagram when the gate is forcibly collapsed. The switching valve 23 is closed and the direction control valve 22 is operated to supply the hydraulic oil to the hydraulic cylinder a chamber through the (d) line by the hydraulic pump 21, and at the same time the hydraulic oil in the hydraulic cylinder b chamber is supplied through the (e) line. Tank 2
Return to 0, forcibly contract the hydraulic cylinder and lay down the gate. 6B is a reverse operation circuit of FIG. 6A, in which the directional control valve 22 is operated in the opposite direction to that of FIG. 6A, and the hydraulic pump 21 supplies hydraulic oil to the hydraulic cylinder b through the line C. Supply to the chamber and through the (ki) line to hydraulic cylinder a
The hydraulic oil in the chamber is returned to the oil tank 20, and the hydraulic cylinder is forcibly extended to raise the gate.

FIGS. 7 to 10 show the automatic raising and raising operation of the gate. FIG. 7 shows a state in which the gate is lying down. FIG. 8 shows a state where the downstream water level rises, buoyancy is generated in the door, and the gate stands up. The hydraulic circuit at this time is the hydraulic circuit shown in FIG. 4, and buoyancy and water pressure act as a rotational moment on the gate due to the rise of the downstream water level, and the hydraulic circuit automatically stands up. FIG. 9 shows a state in which the gate has been completely raised. Due to the standing upper limit stopper, the door body 1 cannot rotate any further. FIG. 10 shows a state in which river water is accumulated on the upstream side and the water level on the downstream side is lowered from the state of FIG. The hydraulic circuit shown in FIG. 4 prevents the hydraulic cylinder from contracting even when the water level on the downstream side is lowered, so that the gate does not fall and the standing state is maintained.

FIG. 11 shows the operating states of automatic laying down of the gate and forced laying down. FIG. 11A shows a state in which the gate stands up and water is stored upstream. When the upstream water level rises from this state, the upstream water that has passed through the water conduit 18 floats the float 27, which opens the check valve 26, and the gate automatically falls as in the hydraulic circuit shown in FIG. FIG. 11B shows a state in which the hydraulic circuit is in the laid state of FIG. 5, but the gate cannot be completely laid down due to the water pressure balance due to the upstream and downstream water levels. In this state, the door body is in a state of obstructing the drainage cross section of the river, and there is a risk that the debris and the like will be entangled with the door body and thus the smooth drainage function of the river will be obstructed. Therefore, as shown in FIG.
Using the hydraulic circuit shown in (a), the door body is forced to lie on the riverbed. The automatic opening and closing of the gate can be performed in accordance with pre-programmed times such as high tide and low tide.

[0016]

As described above, according to the present invention,
When the downstream water level rises, or at a pre-programmed time, it stands up automatically and unpowered, and it has the function of maintaining its standing state without any operation. It is possible to provide an automatically operated undulating gate that does not obstruct the flow section of a river by forcibly causing the door to fall down on the riverbed by an arbitrary operation.

[Brief description of drawings]

FIG. 1 is a schematic view of an automatic operation undulating gate of the present invention, in which (a) is a sectional view of a water channel side and (b) is a sectional view of an inside of an operating device chamber.

FIG. 2 is a front view seen from the downstream side of the automatic operation undulating gate of the present invention.

FIG. 3 is a hydraulic circuit diagram of an embodiment of the present invention.

FIG. 4 is a hydraulic circuit diagram of an embodiment of the present invention.

FIG. 5 is a hydraulic circuit diagram of an embodiment of the present invention.

FIG. 6 is a hydraulic circuit diagram of an embodiment of the present invention.

FIG. 7 is an explanatory diagram showing an automatic standing up operation and a standing up holding operation of the gate.

FIG. 8 is an explanatory diagram showing an automatic standing and standing standing operation of the gate.

FIG. 9 is an explanatory view showing an automatic standing up operation and a standing up holding operation of the gate.

FIG. 10 is an explanatory diagram showing an automatic standing up operation and an upright holding operation of the gate.

FIG. 11 is an explanatory diagram showing the operating states of automatic laying down of the gate and forced laying down.

FIG. 12 is an explanatory view showing a general view of a conventional floating type undulating gate.

FIG. 13 is an explanatory view showing a general view of a conventional floating type undulating gate.

FIG. 14 is an explanatory view showing a general view of a conventional floating type undulating gate.

FIG. 15 is an explanatory view showing a general view of a conventional floating type undulating gate.

[Explanation of symbols] 1 floating body type undulating door body, 2 bearing hardware, 3 drive shaft, 4
Torque arm, 5 bearing hardware, 6 double rod hydraulic cylinder, 7 rod tip hardware, 8 trunnion hydraulic cylinder mount, 9 side door fittings, 10 bottom hardware,
11 side watertight rubber, 12 bottom watertight rubber, 13 drive shaft watertight device, 14 standing upper limit stopper, 15 actuator chamber, 16 hydraulic operating device, 17 automatic tipping device, 1
8 water conduit, 19 water conduit screen, 20 oil tank, 21 oil pump, 22 3 position 4 connection direction control valve,
23 2-port 2-position switching valve, 24, 25 check valve (in-line check valve), 26 manual switching check valve, 2
7 float device, 28 relief valve, 29 pressure gauge,
30 stop valves, 31 line filters, 32 strainers

Claims (3)

(57) [Claims] 1. It is installed across a river such as a tidal section,
The buoyancy generated in the door body with the rise of the downstream water level is used to erect the gate to prevent water downstream from the gate from entering the upstream side, such as when the tide goes up, and a separate hydraulic cylinder is used. In the floating undulating gate facility installed for the purpose of maintaining the standing state and storing the upstream water, the torque arm attached to the drive shaft for rotating the door body is installed in the actuator chamber installed on the side of the water channel. A double-rod hydraulic cylinder is attached to the valve, and a hydraulic circuit with a check valve is set so that it can only normally operate in the standing direction, allowing the door to stand freely due to the rise in the downstream water level. Automatically operated up-and-down type gate that is capable of holding the standing state and storing water upstream. 2. A check valve of the hydraulic circuit for opening the door body in an upright state when the water level on the downstream side exceeds a predetermined level or at a preprogrammed time to open the door body in an inclined state. The automatically actuated undulating gate according to claim 1, further comprising means. 3. The automatically actuated up and down gate according to claim 1, wherein the hydraulic circuit is provided with means for manually operating to open the upright door body in a tilted state.