JP3178969U - Water gate - Google Patents

Abstract

To provide a sluice gate that can be easily and reliably contacted and closed with a door body uniformly around the entire circumference with a simple configuration.
A sluice 1 has a support arm 5 provided at an upper part of a drain outlet 2a, an intermediate part rotatably supported by the support arm 5 by a shaft 4, and one end connected to an upper part of a door body 3. A connecting member 6 and a balance weight 7 provided at the other end of the connecting member 6 are provided. The balance weight 7 is made of a material that generates buoyancy in water, and the door body 3 is supported so as to be able to swing relative to the connecting member 6. When the connecting member 6 is rotated so that the water level becomes higher and the door body 3 closes the drain port 2a due to the buoyancy of the balance weight 7, a part of the door body 3 first contacts the end surface of the drain port 2a. Even so, the door 3 is pressed against the drain 2a by the water pressure P downstream of the drain 2a, and the door 3 rotates relative to the connecting member 6.
[Selection] Figure 1

Description

  The present invention relates to a sluice, and more particularly to a sluice installed in a river, a coast, a dam, or the like.

  Rivers, coasts, dams, etc. are provided with sluices that open and close the doors according to the water levels upstream and downstream of the waterway. As a prior art of such a sluice gate, it is disclosed by patent document 1, for example. As shown in FIG. 2 of the present application, the sluice 1 ′ disclosed in Patent Document 1 is provided with a door body 3 ′ that can swing in a water channel 2 that circulates water from an inner water area to an outer water area. The door 3 'swings to open and close the drain port 2a of the water channel 2. The support arm 5 provided at the upper part of the drain port 2a and the intermediate part are rotated to the support arm 5 by the shaft 4. A connecting member 6 ′ that is movably supported and has one end connected to the upper portion of the door 3 ′ and a balance weight 7 provided at the other end of the connecting member 6 ′. Is configured to generate buoyancy in water, and the balance weight 7 is provided at the other end of the connecting member 6 ′, whereby the door body 3 ′ is discharged from the drain port 2 a of the water channel 2. Slightly open drain 2a without being pressed by water When the water discharged from the water channel 2a is pressed, the door is further swung to open the drain port 2a. Further, when the water level in the outer water area rises above the drain port 2a, the balance weight 7 generates buoyancy to generate the door. The body 3 'is configured to be swung so as to close the drain port 2a.

  In the sluice 1 ′ configured in this manner, in a reference state where there is little water flowing through the water channel 2 and the door body 3 ′ is not pressed, the door body 3 ′ opens the drain port 2 a of the water channel 2 slightly due to the weight of the balance weight 7. It has become a state. Therefore, a small amount of water flowing through the water channel 2 can flow out from the drain port 2a to the downstream outer water area, and dust contained in the flowing water is sandwiched between the door body 3 and the drain port 2a. There is nothing.

  And when the quantity of the water which flows through the water channel 2 increases and presses the door body 3 ', the door body 3' uses the water pressure of the flowing water from the reference state and uses the motive power without using power. Further, the door body 3 ′ rotates so as to open the drainage port 2 a of the water channel 2. At this time, the door body 3 can be easily rotated by the balance weight 7 according to the water pressure of the flowing water. Further, when the amount of water flowing through the water channel 2 decreases and the door body 3 ′ is not pressed by the water pressure, the door body 3 ′ immediately returns to the reference position without using power.

  On the other hand, as shown in FIG. 2, the water level in the outer water area becomes higher than the water level in the inner water area or the water channel 2 (that is, the water level on the downstream side of the drainage port 2a becomes higher than the water level on the upstream side). When the weight 7 is submerged, it is immediately and reliably centered on the shaft 4 so that the door 3 'closes the drain port 2a by the buoyancy of the balance weight 7 provided at the other end of the connecting member 6' without using power. It can be reliably prevented from rotating and backflowing from the downstream side to the upstream side of the drain port 2a.

Utility Model Registration No. 3171213

  In the prior art, in order to connect one end of the connecting member 6 to the upper part of the door body 3, the door body 3 'and one end of the connecting member 6 are firmly fixed by welding or the like. Therefore, the connection angle between the door body 3 ′ and the connecting member 6 ′, the curved shape of the connecting member 6 ′, the position supported by the support arm 5 of the connecting member 6 ′, or the upper surface of the water channel 2 near the drain port 2 a. If the position of the support arm 5 provided on the water channel 2 is not appropriate, the door body 3 ′ cannot uniformly contact the entire circumference of the drainage port 2 a when the water level in the outside water area rises higher than the drainage port 2 a of the water channel 2. Therefore, the drain port 2a cannot be reliably closed, and as a result, water leaks from the outer water area into the water channel 2 through the drain port 2a, and backflow into the inner water area cannot be reliably prevented. A problem will occur.

  In order to avoid such a problem, the door body 3 ′ is uniformly contacted over the entire circumference of the drainage port 2 a when the water level in the outside water area is higher than that of the drainage port 2 a of the water channel 2. In addition, the curved shape of the connecting member 6 ′ is accurately formed, and the door body 3 ′ and the connecting member 6 ′ are connected at an accurate angle, or the connecting member 6 ′ is supported at an accurate position by the support arm 5. Further, it is necessary to provide the support arm 5 at an accurate position with respect to the upper surface of the water channel 2 near the drain port 2a.

  Furthermore, even if these molding accuracy, assembly accuracy, and installation accuracy are taken into consideration so that the door body 3 ′ is uniformly in contact with the entire periphery of the drainage port 2 a, impact due to changes in temperature and opening / closing of the door body are circulated. If each component member such as the connecting member 6 ′, the arm 5 and the door body 3 ′ is deformed by water pressure, the door body 3 ′ cannot be uniformly contacted over the entire circumference of the drain port 2a in the closed state. The above problem cannot be avoided.

The present invention has been made in view of the above-described problems, and provides a sluice that can easily and reliably contact and close the door body over the entire circumference with a simple configuration. With the goal.

In order to achieve the above-mentioned object, the sluice according to claim 1 is provided with a door body swingable in a water channel for circulating water from the inner water area to the outer water area, and the door body swings. A sluice that opens and closes a drain outlet of the water channel, and a support arm provided at an upper portion of the drain outlet, an intermediate portion is rotatably supported by the support arm by a shaft, and one end supports the door body And a balance weight provided at the other end of the connection member. The balance weight is configured to generate buoyancy in water, and the balance weight is a member other than the connection member. By being provided at the end, the door body opens the drain port in a state where it is not pressed by the water discharged from the water channel, and further opens the drain port when pressed by the water discharged from the water channel. Rocking Further, the door body is swung so as to close the drainage port by buoyancy generated by the balance weight when the water level in the outer water area rises above the drainage port. It is characterized by being supported so as to be able to swing relative to.
In order to achieve the above object, the sluice according to claim 2 is characterized in that, in the devise according to claim 1, the door body is provided with an upper support shaft provided at an upper portion of a side surface thereof, and a lower portion from the upper support shaft. A lower support shaft provided at a predetermined distance from the upper support shaft, and the connecting member supports an upper shaft hole rotatably supported around the upper support shaft, and the upper support shaft as a center. The lower support shaft has a lower shaft hole that allows the lower support shaft to move within a predetermined range as the door body rotates.
In order to achieve the above object, a sluice according to claim 3 is characterized in that, in the devise according to claim 2, the lower shaft hole is a long hole.
In order to achieve the above object, the sluice according to claim 4 is the devise according to any one of claims 1 to 3, wherein any one of the surfaces of the water channel and the door body in contact with each other is provided. On the other hand, a seal member is provided.

According to the first aspect of the present invention, the balance weight is provided at the other end of the connecting member whose one end supports the door body and whose intermediate portion is rotatably supported by the support arm by the shaft. The balance weight balances with the door body and easily swings, generates buoyancy in the water, and further opens the drain port in a state where the door body is not pressed by the water discharged from the water channel. It functions to maintain. For this reason, the door body is maintained in a state in which the drain outlet is opened without being pressed by the water discharged from the water channel by the balance weight without using power, and as a result, the amount of water flowing through the water channel is small. Even if it drains reliably. Further, when the amount of water discharged from the water channel increases, the door body is pressed by this water and is easily swung by the balance weight so as to open the drain outlet, so that the increased amount of water is surely drained without delay be able to. Further, when the water level in the outer water area rises above the drainage port, the door body is reliably swung so as to close the drainage port by the buoyancy generated by the balance weight provided at the other end of the connecting member. When the water level on the downstream side is higher than the water level on the upstream side, the drain outlet can be reliably closed to prevent backflow. The movement of these door bodies does not require power, and the balance weight not only balances the door body but also generates buoyancy in the water, so there is no need to provide a float separately from the balance weight. Therefore, it is possible to install a sluice gate at low cost. Even when only a part of the door body first comes into contact with the drainage port due to the swinging of the connecting member due to the buoyancy of the balance weight, the door body is later relative to the connecting member due to the downstream water pressure. Therefore, the door body is uniformly in contact with the drain outlet over the entire circumference and is reliably closed.
According to a second aspect of the invention, in the first aspect of the invention, the door body is provided at an upper support shaft provided at an upper portion of a side surface thereof and at a position spaced apart from the upper support shaft by a predetermined distance. A lower support shaft, and the connecting member supports an upper shaft hole rotatably supported about the upper support shaft, and the door body rotates about the upper support shaft. The lower support shaft has a lower shaft hole that allows the lower support shaft to move within a predetermined range, so that the door body can be supported to be swingable relative to the connecting member. Can be embodied.
According to a third aspect of the present invention, in the device according to the second aspect, the lower shaft hole is a long hole, so that the door body rotates around the upper support shaft of the lower shaft hole. A structure capable of allowing the lower support shaft to move within a predetermined range can be realized.
According to a fourth aspect of the present invention, in the device according to any one of the first to third aspects, a sealing member is provided on one of the surfaces of the water channel and the door body that are in contact with each other. Thus, it is possible to realize a sluice that can reliably prevent water from leaking between the drain port and the door body.

According to the first aspect of the present invention, the downstream water level is higher than the upstream water level by a simple configuration in which the door body is supported so as to be swingable relative to the connecting member. In this case, it is possible to provide a sluice having a structure in which the door body can reliably block the drain outlet to prevent the backflow from downstream to upstream.
According to the invention described in claim 2, in the invention described in claim 1, the door body is located at a position spaced apart from the upper support shaft provided at the upper part of the side surface by a predetermined distance from the upper support shaft. A lower support shaft provided, and the connecting member pivots on the upper support shaft so as to be rotatable about the upper support shaft, and the door body rotates about the upper support shaft. Accordingly, the lower support shaft has a lower shaft hole that allows the lower support shaft to move within a predetermined range, thereby reliably closing the drain port when the downstream water level is higher than the upstream water level. It is possible to easily provide a sluice having a structure capable of preventing backflow.
According to the invention described in claim 3, in the invention described in claim 2, the lower shaft hole is a long hole, so that when the downstream water level is higher than the upstream water level, the drain outlet is surely provided. Thus, it is possible to easily provide a sluice having a structure that can prevent backflow by blocking.
According to the invention described in claim 4, in the device described in any one of claims 1 to 3, a seal member is provided on any one of the surfaces of the water channel and the door body that are in contact with each other. By being provided, when the downstream water level is higher than the upstream water level, it is possible to easily provide a sluice gate having a structure that can reliably block the drain outlet and prevent backflow.

In order to explain one embodiment of the sluice gate of the present invention, the water level rises in the outer water area, the balance weight is submerged, the buoyancy causes the connecting member to swing, and a part of the door body first becomes the drain outlet. In order to explain the state (a) in contact and the state (b) in which the door body is swung relatively with respect to the connecting member due to the water pressure in the outer water area and is in close contact with the drain port evenly over the entire surface. It is the side view shown in. It is the side view shown in order to demonstrate the prior art.

One embodiment of the sluice gate of the present invention will be described with reference to FIGS. In the figure, the right side is the upstream side and the left side is the downstream side.
In the sluice 1 of the present invention, a door 3 is swingably provided in a water channel 2 through which water is circulated from an inner water area to an outer water area, and when the door body 3 swings, 2a for opening and closing 2a, a support arm 5 provided on the upper part of the drainage port 2a, and a middle part rotatably supported on the support arm 5 by the shaft 4 and one end supporting the door 3 A member 6 and a balance weight 7 provided at the other end of the connecting member 6 are provided. The balance weight 7 is configured to generate buoyancy in water, and the balance weight 7 is connected to the connecting member 6. By providing the other end of the door, the door body 3 'opens the drain port 2a slightly without being pressed by the water discharged from the drain port 2a of the water channel 2, and the water discharged from the water channel 2a. When pressed, the drain 2a is opened further. Further, the door body 3 ′ is swung so as to close the drainage port 2 a by buoyancy generated by the balance weight 7 when the water level in the outer water area rises above the drainage port 2 a. Furthermore, the door body 3 is supported so as to be able to swing relative to the connecting member 6.
In this embodiment, as a structure for supporting the door body 3 so as to be swingable relative to the connecting member 6, the door body 3 is provided with an upper support shaft provided at the upper part of the side surface. 30 and a lower support shaft 31 provided at a position spaced apart from the upper support shaft 30 by a predetermined distance, and the connecting member 6 supports the upper support shaft 30 so as to be rotatable about the upper support shaft 30. A shaft hole 60 and a lower shaft hole 61 that allows the lower support shaft 31 to move within a predetermined range as the door body 3 rotates about the upper support shaft 30 are provided.
Furthermore, in this embodiment, a seal member 8 is provided on either one of the surfaces of the water channel 2 where the drain port 2a and the door body 3 are in contact with each other.

  The water channel 2 in this embodiment is constituted by a soot tube having a substantially rectangular cross section perpendicular to the water flow. The water channel 2 is provided between an inner water area such as a tributary river inside the embankment and an outer water area such as a river, a coast, or a dam. The water channel 2 in this embodiment can be formed in a substantially rectangular cross section, for example, and can be formed in a circular cross section, for example. The end face of the water outlet 2a of the water channel 2 is formed substantially vertically.

  A base portion of the support arm 5 is provided on the upper surface (hereinafter referred to as slab) of the water channel 2 in the vicinity of the drain outlet 2a. As will be described later, the support arm 5 is curved and shaped so that the shaft 4 is positioned substantially above the drain port 2a. The door body 3 is formed in a plate shape having a size and a shape that can close the drain port 2a of the water channel 2. In this embodiment, the seal member 8 made of elastic rubber or the like is provided on the surface of the door body 3 on the side of the drain port 2 and at least the entire portion in contact with the drain port 2a. In a state where the door body 3 is in contact with the drain port 2a, the seal member 8 is interposed between the door body 3 and the drain port 2a, so that the door body 3 can reliably block the drain port 2a in a watertight manner. In addition, the sealing member 8 can also be provided in the end surface which contact | connects the door 3 of the drain port 2a.

  An intermediate portion of the connecting member 6 is rotatably supported by a shaft 4 provided at the tip of the support arm 5. One end of the connecting member 6 supports the upper part of the door body 3 (this support structure will be described in detail later), and the other end is connected to the balance weight 7. The connecting member 6 has the door 3 so that the door 3 can close the drain 2a by the buoyancy generated by the balance weight 7 when the water level in the outside water area rises above the drain 2a. The balance weight 7 is curved so as to be positioned on the upstream side of the door body 3 in the closed state. The length of the connecting member 6 from the shaft 4 to one end that supports the door body 3, the length from the shaft 4 to the other end connected to the balance weight 7, and the degree of curving are balanced with the door body 3. The weight 7 can be set according to the mass of each weight, the buoyancy generated by the balance weight 7, and the like. A state in which the door 3 is not pressed by the water discharged from the drain 2a of the water channel 2 (hereinafter, this state is referred to as a reference state), and as shown in FIG. In a state where the water level rises and the door 3 closes the drain port 2a (hereinafter this state is referred to as a closed state), the balance weight 7 is positioned upstream of the shaft 4 (inner water area side). 7 is provided at the tip of the connecting member 6. By adjusting the length of both ends of the connecting member 6 with respect to the shaft 4, the degree of curvature, etc., the swinging door body 3 and the balance weight 7 can be easily balanced, and the drain outlet of the door body 3 in the reference state As will be described later, the moment by the balance weight 7 can be arbitrarily adjusted so as to adjust the position (opening degree) with respect to 2a.

  The balance weight 7 has a mass corresponding to the moment due to the mass of the door body 3 and the length of the connecting member 6, and a sealable space 7 a is formed inside thereof. In the space 7a, for example, air at atmospheric pressure or a foaming material is enclosed as a material capable of generating buoyancy in the balance weight 7 in water. Therefore, the balance weight 7 not only functions so as to be able to swing easily around the shaft 4 in balance with the mass of the door body 3, but also has a function of generating buoyancy in water. By appropriately adjusting the size of the space 7a, the buoyancy generated by the balance weight 7 in water can be easily adjusted. In addition, when air is enclosed in the space 7a of the balance weight 7, the balance weight 7 can be configured at low cost so as to generate buoyancy in water. Further, when the foam material is enclosed in the space 7a of the balance weight 7, even if the balance weight 7 is damaged and the space 7a is not sealed, the buoyancy is surely generated in water. Can do. However, the present invention is not limited to this embodiment, and any material other than air or foam material can be employed as long as it can generate buoyancy in the balance weight 7 in water.

  Upper side support shafts 30 are respectively provided on the side surfaces of the door body 3, and lower support shafts 31 are respectively provided below the upper support shafts 30 at a predetermined interval. On the other hand, the lower end (one end) of the connecting member 6 is provided with an upper shaft hole 60 for pivotally supporting the upper support shaft 30 so as to be pivotable. Lower shaft holes 61 that receive the lower support shaft 31 so as to be movable within a predetermined range at a distance are provided. The lower shaft hole 61 is configured by a linear or arc-shaped elongated hole extending in the width direction of the connecting member 6.

  In the sluice 1 configured as described above, the shaft 4 provided at the distal end of the support arm 5 is positioned above the drain port 2a, and the distal end (the other end) of the connecting member 6 connected to the shaft 4. The balance weight 7 provided on the upstream side of the shaft 4 is positioned on the upstream side. Therefore, in a reference state where there is little water flowing in the water channel and the door 3 is not pressed, the door 3 is in a state where the drainage port 2 a of the water channel 2 is slightly opened by the weight of the balance weight 7. Therefore, a small amount of water flowing through the water channel 2 can flow out from the drain port 2a to the downstream outer water area, and dust contained in the flowing water is sandwiched between the door body 3 and the drain port 2a. There is nothing.

  When the amount of water flowing through the water channel 2 increases and the door body 3 is pressed, the door body 3 is further moved from the reference state by the water pressure of the flowing water without using power, and the door is further centered on the shaft 4. The body 3 rotates so as to open the drain port 2a of the water channel 2. At this time, the door body 3 can be easily rotated by the balance weight 7 according to the water pressure of the flowing water. If the amount of water flowing through the water channel 2 decreases and the door body 3 is not pressed by the water pressure, the door body 3 immediately returns to the reference position without using power.

  On the other hand, as shown in FIG. 1, the water level in the outer water area becomes higher than the water level in the inner water area or the water channel 2 (that is, the water level on the downstream side of the drain port 2a becomes higher than the water level on the upstream side). When the weight 7 is submerged, the shaft 4 is closed so that the door 3 supported at one end of the connecting member 6 is closed by the buoyancy of the balance weight 7 provided at the other end of the connecting member 6 without using power. Rotate immediately and reliably around the center. At this time, as shown to Fig.1 (a), a part of door 3 (upper part in Fig.1 (a)) may initially contact the end surface of the drain port 2a. However, even in such a case, the door 3 is pressed against the drain 2a by the water pressure P downstream of the drain 2a as shown in FIG. The support shaft 30 rotates with respect to the upper shaft hole 60 of the connecting member 6, and the lower support shaft 31 moves in the lower shaft hole 61 that is a long hole, that is, the door body 3 is relative to the connecting member 6. Rotate. Therefore, the door body 3 is in contact with the entire end surface of the drain port 2a and is closed without applying an excessive force between the door body 3 and the connecting member 6. And since the sealing member 8 is interposed between the door body 3 and the drainage port 2a, watertightness is maintained, and it is possible to reliably prevent backflow from the downstream side to the upstream side of the drainage port 2a.

  Even when the lower part of the door body 3 is first in contact with the end face of the drain port 2a, the three doors are the same as in the case where the upper part is first in contact with the end face of the drain port 2a (FIG. 1 (a)). Is relatively rotated with respect to the connecting member 6, the door body 3 comes into contact with the entire end face of the drain port 2 a.

  In the present invention, the positions of the upper support shaft 30 and the lower support shaft 31 provided on the side surface of the door body 3 and the movement range of the lower support shaft 31 can be arbitrarily set as necessary.

  1: Sluice, 2: Waterway, 2a: Drainage port, 3: Door body, 4: Shaft, 5: Support arm, 6: Connecting member, 7: Balance weight, 7a: Space, 30: Upper support shaft, 31: Lower Support shaft, 60: Upper shaft hole, 61: Lower shaft hole

Claims (4)

A door body is provided so as to be able to swing in a water channel that circulates water from an inner water area to an outer water area, and is a sluice that opens and closes a drain outlet of the water channel by swinging the door body,
A support arm provided at the top of the drain;
A connecting member that is pivotally supported on the support arm by a shaft and has one end supporting the door body;
A balance weight provided at the other end of the connecting member,
The balance weight is composed of a material that generates buoyancy in water,
By providing the balance weight at the other end of the connecting member, the door body opens the drainage port without being pressed by the water discharged from the water channel, and is pressed by the water discharged from the water channel. Then, the door body is further swung so as to open the drain port, and further, the door body is swung so as to close the drain port by the buoyancy generated by the balance weight when the water level in the outer water area rises above the drain port. In what
The sluice characterized in that the door body is supported so as to be able to swing relative to the connecting member. The door body has an upper support shaft provided at an upper portion of the side surface thereof, and a lower support shaft provided at a position spaced apart from the upper support shaft by a predetermined distance;
The connecting member supports an upper shaft hole that is rotatable about the upper support shaft, and the lower support shaft is within a predetermined range as the door body rotates about the upper support shaft. The sluice according to claim 1, further comprising a lower shaft hole that allows movement.   The sluice according to claim 2, wherein the lower shaft hole is a long hole.   The sluice according to any one of claims 1 to 3, wherein a seal member is provided on any one of the surfaces of the water channel and the door body in contact with each other.

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