JP2000045254A - Automatic working derricking type gate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic working derricking type gate not to cause downstream cross-section blockage of a river by automatically erecting in a gravity-free state as a downstream side water level rises, having a function to hold this erecting state without optional operation and simultaneously forcibly derricking a door body on a river bed by optional operation at the time when water of the river rises. SOLUTION: A floating body type derricking type gate facility is set on the purpose of erecting a gate by using buoyancy to be generated in accordance with rising of a downstream side water level as well as set crossing a river of a tidal territory, etc. In this case, it is possible to reserve water on the upstream side by freely carrying out derricking motion of the door body 1 by rising of the downstream side water level and holding the erecting state as it is by setting a hydraulic pressure circuit having a check valve so as to freely carry out only working in the normal erecting direction by installing a both rod type hydraulic cylinder 6 on a torque arm 4 installed on a drive shaft 3 for door body rotational work in a working device room 15 provided on a channel side part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art In a river in a tidal section, a floating type undulating gate has been installed across a river in order to prevent the tide from running up automatically and without power. The gate automatically rises due to the buoyancy or water pressure acting on the door body as the water level on the downstream side rises, thereby preventing downstream water from entering the upstream side. In addition, a hydraulic cylinder device or 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, living water, etc. on the upstream side of the gate by arbitrarily erecting the door is added. Have been used.

[0003]

[0005] In the conventional technology,
The raising operation of the door body due to the rise of the water level on the downstream side and the raising 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 risen due to the rise of the downstream water level has a mechanism that falls down at the same time as the fall of the downstream water level. A separate operation is required to raise the door for the purpose of storing water. In addition, since hydraulic cylinders and wire-winding switchgears have no relation to the buoyancy acting on the door body, the downstream water level remains constant even when the river rises and the upstream water flows downstream. If there is, the door body will float in the water, and dust and the like that have flowed down the river may become entangled with the door body, which may hinder the smooth flow of the river.

FIGS. 12 to 15 show general views of a conventional floating type undulating gate. 35 is a floating door, 36 is a hydraulic cylinder (plunger type), 37 is a side door fitting, 38
Is a support, 39 is an upper limit stopper, and 40 is a hydraulic operating device. FIG. 12 shows a state of standing up due to the water level on the downstream side. Since the door and the hydraulic cylinder are not connected, the door can be freely raised by buoyancy and water pressure due to the downstream water level.

FIG. 13 shows a state in which the buoyancy has disappeared due to the lowering of the water level on the downstream side, and the door body has fallen down. FIG. 14 shows a state where the hydraulic operating device is operated, the hydraulic cylinder is extended, and the gate is erected to store river water on the upstream side. FIG. 15 shows a state where the door body is floating in the water due to the upstream and downstream water level balance. Even if the upstream water level rises, if there is a certain water level on the downstream side, the gate will not completely fall down and float in the middle standing state due to fluctuations in the upstream and downstream water levels. This condition impedes the downflow section during river flooding. In addition, the flow of garbage and the like becomes entangled with the door, which hinders the good flood drainage function of the river.

The present invention has a function of automatically and non-poweredly rising when the downstream water level rises and maintaining the rising state without any operation.
It is an object of the present invention to provide an automatically operable undulating gate that does not obstruct the cross section of the river by forcibly causing the door body to fall on the riverbed by an arbitrary operation.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an automatically operated undulating gate according to the present invention is installed across a river, such as a tidal section, and is generated at a door body as the water level on the downstream side rises. The buoyancy of the gate is used to raise the gate to prevent the water downstream of the gate, such as the rising of the tide, from entering the upstream side, and
A double rod type hydraulic cylinder is mounted on a torque arm mounted on a drive shaft for door body rotation operation in an operating device room provided on the water channel side, and a non-return valve so that operation only in the normal upright direction can be freely performed. By setting up the hydraulic circuit having the above, the raising operation of the door body due to the rise of the water level on the downstream side can be freely performed, and the water can be stored on the upstream side while maintaining the standing state. In the check valve of the hydraulic circuit, when the downstream water level is equal to or higher than a predetermined level,
Alternatively, means may be provided for operating at a pre-programmed time to open the door in the upright state to the inclined state. Further, the hydraulic circuit may be provided with a means for opening the door in a tilted state by operating the door body by a manual operation.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the present invention, a torque arm attached to a drive shaft for rotating and driving a floating type door is provided in an operating device room provided on a side of a water channel. Attach and install a hydraulic cylinder. The hydraulic cylinder is mounted on a trunnion-type, solid base. This double rod type hydraulic cylinder is made equal in the front and rear rod diameters, so that the amount of oil discharged and the amount of oil supplied by the expansion and contraction of the rod are equal, and the hydraulic circuit connected to the hydraulic cylinder is arbitrarily equipped with a hydraulic cylinder In order to allow the hydraulic cylinder to operate freely only in the direction in which the door body stands,
Provide a circuit that connects the front and rear circuits of the hydraulic cylinder with a one-way control valve. With this mechanism, it is possible to automatically and non-poweredly rise when the water level on the downstream side rises, and to have the function of maintaining the standing state without any operation, and at the same time, it is possible to perform any standing and falling operation. When the river rises, the door can be forcibly lowered on the riverbed to provide an automatically operated undulating gate which does not obstruct the cross section of the river.

[0009]

Embodiments of the present invention will be described below. FIG.
And FIG. 2 is a schematic diagram of the automatic operation undulating gate of the present invention. 1A is a cross-sectional view of a water channel side, FIG. 1B is a cross-sectional view of an operation device chamber, FIG. 2A is a front view of a water channel portion viewed from a downstream side, and FIG. FIG. In these figures, 1 is a floating undulating door, 2 is a support, 3
Is a drive shaft, 4 is a torque arm, 5 is a bearing hardware, 6 is a double rod hydraulic cylinder, 7 is a rod end hardware, 8 is a trunnion hydraulic cylinder mount, 9 is a side door hardware, 10
Is a bottom metal part, 11 is a side watertight rubber, 12 is a bottom watertight rubber, 13 is a drive shaft part watertight device, 14 is a standing upper limit stopper, 15 is an operating device room, 16 is a hydraulic operating device, 17 is an automatic overturn device, 18 Denotes a water pipe, and 19 denotes a water pipe screen.

3 to 6 show hydraulic circuit diagrams. In these figures, 20 is an oil tank, 21 is an oil pump, 22 is a three-position, four-direction control valve operated by an operation lever, and 2
3 is a 2-port 2-position switching valve also operated by an operation 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 the upstream water level). ), 28 are relief valves, 29
Denotes a pressure gauge, 30 denotes a stop valve, 31 denotes a line filter, and 32 denotes a strainer. Float device 2
The automatic overturning device 17 shown in FIG.
And a mechanism for opening the manual switching check valve 26 when the float 27 rises.

FIG. 4 is a circuit diagram when the door 1 automatically rises according to the downstream water level. At this time, the direction control valve 22
Is in a neutral state, and the switching valve 23 is open. Since the force acts in the direction in which the hydraulic cylinder is extended by the upright rotation of the door 1, the hydraulic oil in the hydraulic cylinder a is discharged and supplied to the hydraulic cylinder b through the line (A). As a result, the piston rod of the hydraulic cylinder can freely extend. However, in this circuit, since the hydraulic oil in the chamber b cannot be discharged by the check valves 24 and 26, it cannot operate in the contraction direction. Therefore, even if the downstream water level falls and buoyancy or water pressure disappears, the door does not fall down.

FIG. 5 is a circuit diagram when the gate automatically falls due to the rise of the upstream water level. When the upstream water level rises, the float 27 rises and opens the check valve 26. Since a force is applied to the hydraulic cylinder in the contracting direction by the torque arm, the hydraulic oil in the hydraulic cylinder b chamber is discharged through the line (a) (circuit of the check valve 26), and C) Hydraulic oil is supplied through the line. With this circuit, the gate falls down until the upstream water level falls and the check valve 26 is closed by the float 27 or the torque arm acting force is lost due to the water pressure balance by the upstream and downstream water levels.

FIG. 6A is a circuit diagram when the gate is forcibly lowered. The switching valve 23 is closed, and the directional control valve 22 is operated to supply the hydraulic oil to the hydraulic cylinder a chamber through the hydraulic pump 21 through the line (d), and at the same time, the hydraulic oil in the hydraulic cylinder b chamber is supplied through the line (e). Tank 2
Return to 0, forcibly shrink the hydraulic cylinder and make the gate fall down. FIG. 6 (b) shows a reverse operation circuit of FIG. 6 (a), in which the directional control valve 22 is operated in the opposite direction to that of FIG. Hydraulic cylinder a through the (g) line
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 erecting operation of the gate and the operation of holding the erecting operation. FIG. 7 shows a state where the gate is lying down. FIG. 8 shows a state in which the downstream water level rises, buoyancy is generated in the door body, and the gate is standing. The hydraulic circuit at this time is the hydraulic circuit shown in FIG. 4, and the buoyancy and the water pressure act on the gate as the rotational moment rises due to the rise of the water level on the downstream side, and the hydraulic circuit rises automatically. FIG. 9 shows a state in which the gate has been completely raised. The upright stopper prevents the door 1 from rotating any further. FIG. 10 shows a state in which river water is stored 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 does not allow the hydraulic cylinder to shrink even when the downstream water level drops, so that the gate does not fall down and remains upright.

FIG. 11 shows an operation state of the automatic fall and forced fall of the gate. 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 passing through the water guide pipe 18 causes the float 27 to float, thereby opening the check valve 26, and the gate automatically falls down as shown in the hydraulic circuit shown in FIG. FIG. 11B shows a state in which the gate cannot be completely laid down due to the water pressure balance between the upstream and downstream water levels while the hydraulic circuit is in the laid state shown in FIG. In this state, the door obstructs the cross section of the drainage of the river, and there is a danger that the drainage and the like may become entangled with the door, impeding the smooth drainage function of the river. Therefore, as shown in FIG.
Using the hydraulic circuit shown in (a), the door body is forced to fall on the riverbed. It should be noted that the automatic opening and closing of the gate can be performed in accordance with a preprogrammed time such as high tide or low tide.

[0016]

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

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of an automatic operation undulating gate according to the present invention, wherein FIG. 1 (a) is a sectional view of a water channel side, and FIG.

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

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

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

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

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

FIG. 7 is an explanatory view showing an automatic standing and standing holding operation of the gate.

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

FIG. 9 is an explanatory diagram showing an automatic standing and standing holding operation of the gate.

FIG. 10 is an explanatory view showing an automatic standing and standing holding operation of the gate.

FIG. 11 is an explanatory view showing an operation state of the automatic fall and the forced fall of the gate.

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

FIG. 13 is an explanatory diagram 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 undulating door, 2 Support, 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 hardware, 10 bottom hardware,
11 side watertight rubber, 12 bottom watertight rubber, 13 drive shaft part watertight device, 14 standing upper limit stopper, 15 actuator room, 16 hydraulic operating device, 17 automatic overturning device, 1
8 water pipe, 19 water pipe screen, 20 oil tank, 21 oil pump, 223 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 valve, 31 line filter, 32 strainer

Claims (3)

[Claims] Claims: 1. installed across a river such as a tidal section;
The gate is raised using the buoyancy generated in the door body with the rise of the water level on the downstream side to prevent the water downstream of the gate from entering the upstream side, such as the rising of the tide, and use a separate hydraulic cylinder, etc. In a floating type up-and-down gate facility installed for the purpose of retaining the standing state and storing upstream water, a torque arm attached to a drive shaft for door body rotation operation in an operating device room provided on a side of a water channel. By installing a two-rod hydraulic cylinder and setting a hydraulic circuit with a check valve so that only the operation in the normal rising direction can be freely performed, the rising operation of the door body due to the rise of the downstream water level can be freely performed. Automatically operated up-and-down gates that can store water upstream while maintaining the standing state. 2. The non-return valve of the hydraulic circuit, which operates when the downstream water level becomes higher than a predetermined level or at a pre-programmed time to open the door in an upright state to an inclined state. 2. The gate according to claim 1, further comprising means. 3. The automatically actuated gate according to claim 1, wherein the hydraulic circuit is provided with a means for opening the door in an inclined state by manually operating the door.