JPH08134876A - Reset device of rubber weir exhaust valve - Google Patents

Abstract

PURPOSE: To reset an exhaust valve in the opened state to the closed position, by connecting a driving means closing the exhaust valve to a moving arm provided in the exhaust valve to discharge the air from the rubber weir. CONSTITUTION: An air pipe 3 is opened at the inside of a rubber weir 2 as a supply way of compressed air and an air exhaust valve 5 is provided at the pipe end in a pit 4. When the weight of a bucket including the own weight exceeds a half of the downward load acting on a movable pulley 14, the downward displacement of the bucket 10 or the upward turn of the swing arm 18 arises to actuate the exhaust valve 5 to open. When the air exhaust valve 5 is opened, air is discharged from the rubber weir 2 and the height thereof is gradually lowered to the complete falling. In order to erect the rubber weir 2 again after a flood or the like has gone down, the rod of a cylinder 22 is actuated to put forward and the swing arm 18 in the opened position of the valve is returned to the closed position. And thereafter, the cylinder rod is retracted to wait the subsequent opening motion of the swing arm 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a return device for a rubber weir exhaust valve, and more particularly, to a rubber weir that is automatically laid down by opening the exhaust valve, and then the exhaust valve is remotely controlled to a closed position. If you can return to.

[0002]

2. Description of the Related Art When a river water level far exceeds the planned water storage level due to a rubber weir due to flooding or the like, air or other gas in the rubber weir is protected for the purpose of protecting the rubber weir and stabilizing the river channel. It is widely practiced to automatically evacuate a rubber weir by automatically discharging it through an exhaust valve.

In this case, various valves such as exhaust valves,
When an underground pit that is connected to an exhaust valve and that accommodates buckets and other parts that are displaced downward as the river water level rises is located directly below the operation room, which is an above-ground building, after the flood has subsided By manually operating the operation unit provided on the pit, the exhaust valve in the open state can be easily returned to its closed position.

[0004]

By the way, in such a conventional technique, when it is unavoidable to provide the pit separately from the operation room, the pit is watertightly sealed, and at the same time, In order to prevent misoperation such as mischief and other mischief of the mechanism part in the pit, it is necessary to enclose the operation part such as the exhaust valve closing operation part in the pit, and therefore, after the flood is subsided. When closing the exhaust valve, it was inevitable that a worker walked to the pit and entered the pit to reset the exhaust valve.

The present invention has been made as a result of studies to solve such problems of the prior art, and an object of the present invention is to provide a case where a pit can be arranged directly below an operation room. Of course, even when it is necessary to dispose the pit separately from the operation room, the exhaust valve in the open state can be automatically operated by remote control without manual operation by workers. It is an object of the present invention to provide a return device for a rubber weir exhaust valve that can return to a closed position.

[0006]

A rubber weir exhaust valve restoring device according to the present invention is provided with an exhaust valve which is connected to a rubber weir through a pipe line and controls exhaust from the rubber weir. ,
Many are connected to a swing arm provided on the exhaust valve to store a quantity of water according to the amount of water stored by the rubber weir, and
When the stored water amount becomes a predetermined amount or more, it is displaced downward and has a bucket for opening the exhaust valve. In the swing arm provided on the exhaust valve, a driving means for closing the swing arm is connected.

Here, preferably, the driving means is constituted by a cylinder or an electric winch. put it here,
When the drive means is constituted by a cylinder, a bucket is connected to one end of the swing arm via a wire, and a cylinder for effecting the closing operation of the exhaust valve is connected to the swing arm via a connecting rod. It is preferable that the connecting rod is provided with a long hole that allows the swing arm to swing to the exhaust valve open position in the inactive posture of the cylinder.

Further, when the driving means is constituted by an electric winch, the swing arm is connected to the electric winch and the tip of a wire for actuating the exhaust valve in the closing direction is connected. It is preferable that the winch can be freely pulled out when the winch does not work.

[0009]

According to this restoring device, the gas in the rubber weir is exhausted by the opening operation of the exhaust valve due to the downward displacement of the bucket to cause the rubber weir to collapse, whereby the rubber weir is effectively protected and the river channel is protected. After ensuring the stability of the above, when the rubber weir is re-established under the sufficient reduction of the river water level, the exhaust valve in the pit is automatically closed by the remote operation of the driving means. Regardless of the relative position between the operation room and the underground pit, it is possible to easily and quickly prepare for the re-erection of the rubber weir without the need for workers to enter the pit and to approach the pit. it can.

Therefore, after that, by supplying a gas of a required pressure into the rubber weir from the pressurized gas supply source through the pipeline, the rubber weir is re-established as expected, and before the fall. Similarly, it can contribute to water storage.

Here, when the drive means is a cylinder or an electric winch arranged in a pit,
With a simple structure, the closing operation of the exhaust valve can be surely brought about without any fear of failure.

By the way, when the drive means is constituted by a cylinder, the exhaust valve swing arm connected to the bucket via a wire is connected to the cylinder via a connecting rod having an elongated hole extending in the axial direction, When the cylinder is extended, the exhaust valve is closed by the tip of the connecting rod, while when it does not contract, by allowing the exhaust valve to open under the action of the elongated hole of the connecting rod, Without interrupting the opening operation of the exhaust valve due to the downward displacement of the bucket,
The required closing of the exhaust valve can be effected sufficiently smoothly by remote control, which constitutes the drive means by an electric winch, the tip of the wire of which is connected to the swing arm. This is also the case when the wire is free to be pulled out without the action of the electric winch.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic cross-sectional side view showing an embodiment of the present invention. In the figure, 1 is a river bed, 2 is a rubber weir installed in a direction transverse to the river bed 1, and L is a planned reservoir water level. , And L ₁ respectively indicate the automatic falling water level of the rubber weir 2.

Here, inside the rubber weir 2, a pipe line 3 serving as a supply / discharge route for pressurized gas, usually pressurized air, is opened, mostly through the bank slope, and this pipe line 3 is opened. An exhaust valve 5 is provided at the pipe end located inside the pit 4. Further, in the pit 4, an air supply pipe 6 is connected to an intermediate portion of the pipe line 3, and an air supply means 7 located outside the pit 4 is provided at a pipe end of the air supply pipe 6.
To provide.

On the upstream side of the rubber weir 2, one end of the water conduit 8 is opened, mostly at the bank slope position, and the other end of the water conduit 8 is placed in the pit 4 and the water hose 9 is provided. By connecting to the bucket 10 via the, the amount of water blocked by the rubber weir 2 can be flowed into the bucket according to the head pressure.

By the way, the illustrated bucket 10 has an air vent hole 11 on its top surface and a solenoid valve 12 on its bottom surface.
It has a water draining hose 13 connected through it, and here, such a bucket 10 is fixed to the ceiling of the pit 4 at one end, and one movable pulley 14 and two buckets attached to the ceiling of the pit 4 are provided. Moving wire 17 wound around fixed pulleys 15 and 16 in sequence
Hanging by. Here, the movable pulley 14 is provided at the exhaust valve 5 and is located at the other end of the fixed wire 19 whose one end is connected to the swing arm 18 which rotates integrally with the valve body.

In such a suspended state of the bucket 10, when the weight in the bucket including the own weight of the bucket 10 exceeds half of the downward load acting on the moving pulley 14, the descending displacement of the bucket 10 is As a result, the swing arm 18 is pivoted upward, which causes the exhaust valve 5 to be opened. In this case, bucket 10
The weight in the bucket at which the descent starts to descend is determined by the weight when the water surface level in the bucket becomes equal to the automatic water level L ₁ in relation to the automatic water level L ₁ . Therefore, in order to reliably maintain the exhaust valve 5 in its closed position until the weight in the bucket reaches the determined weight, as shown in the figure, the weight 20 of the required weight is attached to the swing arm 18. It is preferable. On the other hand, if it is possible to properly balance the downward load acting on the moving pulley 14 and the predetermined weight in the bucket, including the rotational frictional force of the swing arm 18, the weight 20 can be omitted. Of course.

When the exhaust valve 5 is opened by the above-described downward displacement of the bucket 10, the exhaust from the rubber weir 2 is performed and the height thereof is gradually reduced, and finally,
A complete collapse of the rubber weir 2 is brought about. In this case, when the rubber weir 2 is collapsed, the spacers 21 provided in the rubber weir for almost the entire length of the rubber weir prevent the trapping of gas in the rubber weir and keep it smooth and complete. To ensure a proper lodging.

When the rubber weir 2 is thus laid down in this manner, the weir water level due to it is gradually lowered, whereby the water level in the bucket is also naturally reduced, and the river water level is the level at the one end opening of the water conduit 8. When it goes lower than the bucket
All the water in 10 will be discharged to the river side. If there is a risk that not all of the water in the bucket 10 will flow down to the river side, the solenoid valve 12 on the bottom of the bucket 10 will be opened to drain the residual water from the drain hose 13 into the pit. You can also

The exhaust valve 5 opened as described above,
To bring about a reliable closing operation at the desired point,
In this example, a cylinder 22 mounted on the pit floor is connected to a connecting rod 23 at a position opposite to the connecting position of the fixed wire 19 of the swing arm 18 pivotally supporting the intermediate portion.
Connect via. FIG. 2 is an enlarged side view showing this, in which the cylinder 22 is attached to the trunnion post 24 fixed to the pit floor with the trunnion pin 25, and the rod end of the cylinder 22 is attached to the exhaust valve side. To the tip of the arm 26 that is projected substantially horizontally to one end of the connecting rod 23 in which the elongated hole 27 extending in the axial direction is formed, and the connecting pin provided in the swing arm 18 is provided in the elongated hole of the connecting rod 23. Play with 28.

Here, the length of the connecting rod 23 is adjusted by an adjusting nut 29 provided at the upper end of the connecting rod 23, and when the rod of the cylinder 22 advances,
Under the action of the lower edge of the long hole 27, it functions to reliably shift the swing arm 18 in the open position of the exhaust valve 5 to the closed position, and the long hole 27 formed therein moves to the closed position. While allowing the retracting displacement of the cylinder rod that does not have any influence on the swinging arm 18, the swinging arm 18 in the closed position under the retracting displacement of the cylinder rod,
It functions to allow the pivoting to the open position in combination with the rocking movement of the connecting rod itself.

Thus, according to this exhaust valve driving means,
When the rubber weir 2 is reclined after the flood is settled while the rubber weir 2 is in the lying position, the rod of the cylinder 22 is moved forward by a remote operation so that the valve is in the open position. The rocking arm 18 can be reliably rotated to its closed position, and then the cylinder rod is retracted so that the rocking arm 18 is subsequently opened under the action of the slot 27. Can wait.

By the way, after the rubber weir 2 is prepared to be re-established in this manner, it is filled with pressurized gas of a predetermined pressure into the rubber weir through the conduit 3 under the action of the air supply means 7. The rubber weir 2 can be re-established as intended and contribute again to damming the water.

Therefore, according to this valve driving means, the exhaust valve 5 is automatically returned to its closed position by remote control of a worker in the operation room regardless of the relative distance between the pit 4 and the operation room. Since it can be done, it is not necessary for the worker to enter the pit and also to approach the position directly above the pit 4.

Further, here, the valve driving means is constituted by the cylinder 22, so that the structure is simple, small and inexpensive, and the valve driving means which is less likely to cause a failure ensures the exhaust valve 5 at all times. The closing operation can be guaranteed.

In addition, here, the connecting rod 23
By loosely fitting the connect pin 28 into the elongated hole 27 formed in 2, the opening operation of the exhaust valve 5 when the cylinder 22 is inactive can be sufficiently smoothed.

FIG. 3 is a schematic line side view showing another embodiment of the present invention. Here, the fixed pulleys 15 and 16 are wrapped around,
The other end of the moving wire 17 having one end connected to the bucket 10 is connected to the swing arm 18, and the other end of the winch wire 31 having one end connected to the electric winch 30 fixed to the floor surface of the pit 4 is connected to the floor surface. The fixed armature 32 is provided and its swing arm is passed.
18 and its winch wire 31 connected to the electric winch 30
The drawer is free under the negative action of.

According to this example, when the exhaust valve 5 is opened by the rotational movement of the swinging arm 18 in the counterclockwise direction in the figure based on the downward displacement of the bucket 10, the rubber weir 2 is re-established. Operates the electric winch 30 and winds the winch wire 31 to rotate the swing arm 18 clockwise, and the swing arm 18 reaches the closed position of the valve 5 shown by the solid line in the figure. Preferably,
By deactivating the electric winch 30 when it activates a limit switch (not shown), it can also be remotely operated to automatically return the exhaust valve 5 to its closed position.

Further, here, since the winch wire 31 can be freely pulled out in a state where the electric winch 30 is inoperative, when the damming water level by the rubber dam 2 reaches the automatic falling water level L ₁ , it swings. The arm 18 can be rotated sufficiently smoothly to the open position of the valve 5.

Therefore, also according to this embodiment, it is possible to bring about the same effects as the above-mentioned ones.

Although the present invention has been described based on the illustrated example, the cylinder as the valve driving means is connected to the swing arm between the fulcrum of the swing arm and the connection position of the fixed wire thereto. It is also possible to connect the winch wire of the electric winch as the valve driving means to the swing arm on the side opposite to the moving wire connection position with respect to the fulcrum of the swing arm.

[0032]

As described above, according to the present invention, the exhaust valve in the open state can be easily and easily operated by remote control of the valve drive means regardless of whether the pit is arranged separately from the operation chamber. Moreover, it is possible to surely perform the closed return. Further, when the valve driving means is constituted by a cylinder or an electric winch, the exhaust valve can always be reliably closed for a long period of time by the driving means having a simple structure, small size and inexpensive. On the other hand, on the other hand, the opening operation of the closed exhaust valve can be sufficiently smoothed.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional side view showing an embodiment of the present invention.

FIG. 2 is an enlarged side view of a main part of FIG.

FIG. 3 is a schematic side view showing another embodiment.

[Explanation of symbols]

 1 Riverbed 2 Rubber weir 3 Pipe line 4 Pit 5 Exhaust valve 7 Air supply means 8 Water conduit 9 Water conduit hose 10 Bucket 11 Air vent hole 12 Electromagnetic valve 13 Water drain hose 14 Moving pulley 15, 16 Fixed pulley 17 Moving wire 18 Swing arm 19 Fixing wire 20 Weight 22 Cylinder 23 Connecting rod 24 Trunnion post 25 Trunnion pin 26 Arm 27 Long hole 28 Connect pin 29 Adjust nut 30 Electric winch 31 Winch wire 32 Fixed pulley

Claims (4)

[Claims] 1. An exhaust valve which controls exhaust from a rubber weir, and a bucket which is connected to the exhaust valve and opens the exhaust valve by a downward displacement caused by storage of a predetermined amount of water or more. A rubber dam exhaust valve restoring device comprising a swing arm provided on the exhaust valve and driving means for closing the exhaust valve. 2. The rubber weir exhaust valve return device according to claim 1, wherein the drive means is a cylinder or an electric winch. 3. The bucket is connected to one end of the swing arm via a wire, and a cylinder for closing the exhaust valve is connected to the swing arm via a connecting rod. 3. The rubber weir exhaust valve return device according to claim 2, wherein the connecting rod is provided with a long hole that allows the swing arm to swing to the exhaust valve open position in the inactive posture of the cylinder. 4. A tip of a wire which is connected to one end of the swing arm via a wire and which is connected to an electric winch to actuate an exhaust valve in a closing direction. 3. The rubber weir exhaust valve return device according to claim 2, wherein the return device is connected and the wire can be pulled out freely without the action of an electric winch.