JP3133172U - Falling water suppression fall gate - Google Patents

Abstract

Disclosed is a drainage sound generated by a standing rectangular parallelepiped hollow door body 12 and the diffusion of the drainage sound around the hollow door, and a floor of the flowing water channel upstream by a fall of the standing rectangular parallelepiped hollow door body. A smooth flow of water of a predetermined level secured on the surface and normal running water is realized.
SOLUTION: Water H + ΔH1 of a predetermined water level secured on the upstream floor surface 7 of the water flow channel 5 is raised by the upright of the rectangular parallelepiped hollow door body 12 provided on the base 9 of the floor surface 8 on the downstream side of the water flow channel 5. The rectangular parallelepiped hollow door body 12 was allowed to flow from the water inlet 17 of the front panel 13 and dropped, and a drainage sound suppression cover 27 was attached to the outside of the rear panel 14 around the drainage port 18 from the drainage port 18 below the rear panel 14. Thus, drainage is performed so as to be confined in the water fall sound suppression chamber 33 that is secured, thereby suppressing the generation of drainage sound. In addition, by falling the standing rectangular parallelepiped hollow door body 12 onto the floor 8 on the downstream side of the flowing water channel, the water of a predetermined water level and the normal flowing water secured on the floor surface 7 on the upstream side of the flowing water channel 5 are smoothly allowed to flow down.
[Selection] Figure 3

Description

In this device, a falling water suppression fall gate, in particular, a water fall sound suppression fall gate that can be raised and lowered at an appropriate place in a river or waterway, is provided with water of a predetermined level secured by a standing hollow door body. When water is taken in, the sound of falling water generated in the standing hollow door body, the sound of drainage drained from the falling water suppression fall gate is reduced, while the sound of falling water and sound is suppressed while standing When water of a predetermined level secured by the hollow door body is discharged by tumbling the upright hollow door body, there is a risk of disturbing the flow of the effluent water flowing down the fallen hollow door body or the normal running water in the flow channel. In addition, the present invention relates to a falling gate that suppresses a falling sound with little diffusion and generation of a large falling sound and a flowing water sound.

The water body of a predetermined level secured by standing up and down the door body can be sucked in from the siphon inlet around the standing door body and discharged from the siphon outlet, allowing water to be taken in, while the door body standing up as needed For example, JP-A-2001-262551, JP-A-2001-262552, JP-A-58-181910, JP-A-60-123612, JP-A-55-21367, and JP-A-55-122908 (patent documents 1 to 6), respectively.

Patent Document 1 (Japanese Patent Application Laid-Open No. 2000-262551) When using a siphon from a predetermined water level secured by a standing door body, the top of the standing door body is overflowed and dropped to take in a predetermined water level. Siphon tube inlet in a standing door body for suppressing suction sound generated around a siphon inlet in a conventional gate with a siphon, for example, as described in Japanese Patent Application Laid-Open No. 58-195617, which reduces generated falling water noise. In order to prevent the clogging of the siphon flow path in the falling door body, while opening the entrance of the siphon tube from the upstream side mouth port to the downstream side outlet port, An outer swing plate that swings around the hinge is provided to allow the closure to be closed, and the space between the open swing plate and the standing door body is sealed to be disposed in the closed space. In order to allow water to be sucked in from the inlet of the siphon tube and to prevent clogging of the siphon tube flow path in the falling door body, an outside provided swingably around the hinge at the upper end of the door body. The opening rotation plate is rotated when the door body falls down to close the port, thereby preventing the inflow of earth and sand and stones into the siphon conduit in the door body.

Patent Document 2 (Japanese Patent Application Laid-Open No. 2001-262552) In order to suppress the generation of air suction noise in the undulation gate with siphon and to prevent clogging of the siphon tube, the upstream side of the siphon tube having an inlet opening in the undulating door body The faucet can be opened and closed with a lid with a base hinged to the lower edge of the faucet, and a water flow is sucked from the siphon tube inlet in a closed space of the standing door body, and an appropriate gap is provided between the faucet and the inlet. By ensuring that the water flow is stable, it covers the entrance of the siphon tube, and when the door body falls down, the lid is closed with the lid, and earth and sand or stones are put into the siphon tube. Block inflow.

Patent Document 3 (Japanese Patent Laid-Open No. 58-181910) The water flow flowing down from the upstream side to the downstream side by standing up is restricted to a predetermined water level, and a reservoir basin is secured on the upstream side, and surplus water is stored on the downstream side. In an overflow gate that discharges water from the top of the gate and discharges it onto the water surface of the river below, the overflow water flows over the upstream side of the gate and reaches the water surface of the river below. An overflow gate with a flexible sound insulation material that touches the surface and covers it.

Patent Document 4 (Japanese Patent Application Laid-Open No. 60-123612) In an overflow gate designed to overflow from the top end of a standing door body at the time of light precipitation or the like, an inlet is formed on the upstream side of the door body. A water conduit having a drain outlet in the lower part is provided over almost the entire length of the span, and the water conduit is partitioned by a number of vertical partition plates, and the drain outlet is opened downstream from the lower part of the door body. Noise prevention gate.

Patent Document 5 {Microfilm of Japanese Utility Model Application No. 53-104231 (Japanese Utility Model Publication No. Sho 55-21367)} It is elongated in the horizontal direction where all or most of the overflow water at the standing position can flow into the door body of the overturning gate. An intake is provided, and a water level retaining plate that guides the inlet inflow water to the top edge height of the door body at the upright position is fixed to the rear surface of the door body, and rises from both sides of the water level retaining plate and the top edge. A water outlet that surrounds the water level holding plate by a top plate that covers the upper side of the water level holding plate and a water guide plate that is separated from the water level holding plate and is inclined rearward, and that opens to the lower end of the water guide plate on the downstream side of the door body. The water hammer sound of the falling gate and the sediment prevention device.

Patent Document 6 (Japanese Patent Laid-Open No. 2003-2644) A falling weir supported by a bearing provided in a depression on the downstream side lower than the concrete floor plate surface of the upstream river bed so that the lower part of the falling weir (falling gate) can be driven up and down The sand removal method.

Innovative solution

The conventional water level gate secured by the standing door body described in Patent Document 1 is taken in by the siphon tube inside the door body, and the water at the predetermined water level secured by the standing door body is discharged by the fall of the door body. In this case, when water is taken from the secured water level through the siphon tube in the standing door body, the water level of the predetermined water level is substantially lowered to reduce the sound of falling water. In order to suppress the suction sound generated around the entrance of the remaining siphon tube in the gate, for example, the one described in Japanese Patent Application Laid-Open No. 58-195617, the siphon tube inlet is opened in the door body, and the upstream side outlet In addition, an outer opening rotation plate with the upper end as a fulcrum is provided, and the difference in water level before and after the rotation plate, which occurs when the rotation plate is released by the siphon tube, is eliminated, and air is sucked in. Then, reduce the occurrence of vibration noise due to the suction of the air bubbles. In addition, in the state where the upstream water level moves up and down (up and down) near the entrance of the siphon tube, the entrance of the siphon tube is always closed, thereby reducing the diffusion of suction sound (noise) around the undulation gate with siphon. . Further, when the door body falls down, if the pivot plate is closed and the shed is covered, inflow of earth and sand and stone into the door body is prevented, and the flow path of the siphon tube is not blocked. However, none of these measures are sufficient to suppress or reduce the falling sound generated by the drainage discharged from the siphon tube outlet. In addition, this gate with siphon is premised on the provision of a siphon tube that is not originally associated with the hollow door body, and as a result, there is a dislike for making the structure of the hollow door body standing up or down quite complicated. It was. Further, the undulation gate with siphon described in Patent Document 2 has the same problem.

In addition, in these undulation gates with siphons, the predetermined water level secured by the standing siphon gates is secured through the siphons provided in the hollow doors of the siphon gates. While dropping and taking water, the water with the predetermined water level is discharged by the fall of the undulating gate with siphon, and the gate with the siphon that has fallen allows the movement of the water with the predetermined water level (does not disturb) The hollow door body of the gate with a siphon lying down does not work exceptionally.

In addition, in the overflow gate described in Patent Document 3, the overflow gate is provided with a rear gate or a flexible sound insulation plate that forms a water channel with a space behind the overflow gate. There was a dislike to enlarge it.

The present invention provides a conventional falling gate with a undulating siphon or a non-siphoning door body as described above, and the surrounding sound of the falling sound generated when water is taken from water of a predetermined level. In particular, the focus was on providing a door body of the overturned gate that does not cause any special complication of the structure.

The invention of claim 1 is a hollow door body in which the peripheral portions of the front panels 13 and 43 with the water inlets 17 and 47 and the rear panels 17 and 47 with the drain ports 18 and 48 are arranged in parallel at appropriate intervals. 12, 12 A, 42, 42 A, 72, 82, 92, between the water inlets 17, 47 and the water outlets 18, 48, the inflow water from the water inlets 17, 47 of the hollow door body standing up 48 is provided with a flow path regulating member 23, 62, 73, 83, 93 that configures a flow path for draining water from the water inlet and the outlet in the vertical direction, and appropriately drives the base of the hollow door body. Via the mounting shaft 15 driven by the means 16, the downstream side 8 of the flowing water channel 5 is provided on the base 9 at an appropriate place, and the front side of the standing front panel of the hollow door body and the upstream side of the flowing water channel 5 are provided. The floor surface 7 is connected with a watertight rubber 19, The left and right side portions of the air door body is slidably brought into close contact with drainage noise suppression fall gate it was through the watertight rubber 19 ₁ on the side wall 6 of the water flow path 5 downstream.

In the invention of claim 2, the left and right side wall portions of the hollow door bodies 12, 12A, 42, 42A, 72, 82, 92 configured in a rectangular parallelepiped shape are parallel to the side wall on the downstream side of the water flow channel 5, respectively. The base part of the rectangular parallelepiped hollow door body is attached to the base 9 at an appropriate place on the downstream side 8 of the water flow channel 5 via the attachment shaft 15 so as to be displaceable on the same vertical plane.

In the invention of claim 3, the drain ports 18, 48 are provided in the lower half of the rear panels 14, 44 of the rectangular parallelepiped hollow door bodies 12, 12A, 42, 42A, 72, 82, 92 standing upright. Further, according to the invention of claim 4, the base of the rectangular parallelepiped hollow door bodies 12, 12A, 42, 42A, 72, 82, 92 standing up is provided on the downstream side lower than the upstream floor surface 7 of the water flow channel 5. It is attached to the base 9 disposed in the recess 8B of the floor surface 8 through the mounting shaft 15 so as to be able to undulate.

The invention of claim 5 is characterized in that the drainage outlets 18 and 48 of the rear panel of the rectangular parallelepiped hollow door body standing on the floor surface 8 on the downstream side of the water flow channel are located on the recess 8B on the downstream side of the water flow channel. In addition, the invention is arranged so as to be located in a space lower than the floor surface on the upstream side of the flow channel, and the invention of claim 6 is directed to the front panels 13, 43 of the rectangular parallelepiped hollow door bodies 12, 12A, 82. At least a part of the flow path regulating members 23 and 83 provided between the rear panel 14 and 44 is configured in parallel with the front panel and the rear panel.

The invention of claim 7 is characterized in that at least a part of each of the flow path regulating members 23, 62, 73, 83, 93 provided between the front panel and the rear panel of the rectangular parallelepiped hollow door body is connected to the front panel and the rear panel. , Or at a small angle with respect to the front panel and the rear panel, or along the shape of an arc around the axis 23AA parallel to the front panel and the rear panel.

The invention of claim 8 is characterized in that the flow path regulating member in the rectangular parallelepiped hollow door is parallel to the front panel and rear panel of the rectangular parallelepiped hollow door, or is inclined at a small angle with respect to the front panel and rear panel, or The arcs around the axis parallel to the front panel and the rear panel are configured so as to conform to a combination of any two or all of them.

The invention of claim 9 is characterized in that the drainage port 18 of the rear panel 14 of the rectangular parallelepiped hollow door bodies 12 and 12A, the base portion of which is attached to a base 9 disposed at an appropriate position on the floor surface 8 on the downstream side of the flow channel 5 so as to be raised and lowered. In the drainage sound suppression chamber 33 surrounded by the drainage sound suppression cover 27 with the hinge 28 attached to the outside of the rear panel 14 of the rectangular hollow door body 12 and the outside of the rear panel 14. This is provided on the rear panel 14.

According to the invention of claim 10, the top openings 20, 50 of the rectangular parallelepiped hollow door body are top opening covers 21, 51 having hinges 22 and 52 attached to the top of the front panel of the rectangular parallelepiped hollow door body. On the other hand, the top opening covers 21 and 51 can be opened by the falling water flow in the rectangular parallelepiped hollow door body, which can be closed by its own weight.

According to the eleventh aspect of the present invention, the hollow portion extending in the vertical direction of the cuboid-shaped hollow door body standing upright is extended in the vertical direction of the cuboid-shaped hollow door body, and the front chamber and the rear are separated by the partition wall 23 having the missing portion 24 at the top. The front chamber and the rear chamber are divided into side chambers, and the front chamber and the rear chamber are communicated with each other by the missing portion 24. The lower portion of the water inlet 17 of the front panel 13 of the rectangular parallelepiped hollow door bodies 12 and 12A and the front side of the lower portion of the partition wall 23 are connected. These are connected by an inclined or concave arc-shaped introduction wall 25.

According to the twelfth aspect of the present invention, the drainage sound suppression chamber 33 includes a drainage sound suppression cover 27 having a hinge 28 attached to the rear panel 14, 44 outside the rear panel 14, 44 of the rectangular parallelepiped hollow door body. The inner side, the side wall 6 on the downstream side of the flowing water channel 5 with which the left and right sides of the drainage sound suppression cover 27 abut, and the downstream floor surface 8 of the flowing water channel 5 are configured in a substantially triangular tube shape, The drainage sound suppression cover 27 is caused to fall on the floor 8 on the downstream side of the flow channel 5 downstream of the standing rectangular hollow door body, and on the downstream side of the flow channel 5. It can be folded between the floor 8.

In the invention of claim 13, the base of the rectangular parallelepiped hollow door body 42A that stands up, the drain outlet of the lower part of the rear panel is located on the floor surface 8 on the downstream side of the water flow channel 5, and the downstream side of the water flow channel 5 Draining of the rear panel 44 of the rectangular parallelepiped hollow doors 42 and 42A that is detachably attached to the base 9 in the recess 8B so as to be positioned in a space lower than the upstream floor 7 on the recess 8B. The lower edge of the mouth 48 and the lower part inside the front panel 43 are connected by the first descending drainage plate 64, and descend from the inner side higher than the drainage port 48 below the rear panel 44 toward the lower part of the front panel 43, The missing end portion (63 is provided with a reversing plate 62 that is moderately spaced from the upper surface of the forward-falling drain plate 64 and the lower inner surface of the front panel 43.

According to the invention of claim 14, the rectangular parallelepiped hollow door bodies 72, 82, and 92 are erected with a distorted S-shaped guide plate 73 and an S-shaped guide plate at the lower part of the water inlet at the upper part of the front panel and the lower part of the drain outlet of the rear panel. 83, or top and bottom are those linked by either zigzag guide plate 93 having the above edge guide surface 93 _1, 93 ₂ to substantially parallel.

The invention of claim 15 is arranged such that the lower side of the water inlet 47 provided in the upper part of the front panel of the rectangular parallelepiped hollow doors 82 and 92 and the lower part of the drain port 48 provided in the rear panel are connected to the S-shaped guide plate 83 or zigzag guide plate 93 comprises a preceding downlink guide surface 93 _1, 93 ₂ in which the top and bottom are generally parallel, or with connecting the flow path regulating member composed of a combination thereof, any of the central portion of the flow path regulating member The triangular column-shaped reversals 85 and 95 having the top surfaces 85 ₁ and 95 ₁ that are substantially parallel to the top surface 85 ₁ and 95 _1, and the flow paths of one or both of the top surfaces 85 ₁ and 95 ₁ and the S-shaped guide plate 83 or the zigzag guide plate 93. In the rear panel 44, the drainage port 48 is provided above the drain outlet 48 so as to ensure the water passages 84, 94 with appropriate spacing between the regulating member (guide plate).

Effect of device

The device according to this application has the following effects by providing the utility model registration request and the configuration described in claims 1 to 15.
(1) According to the device of claim 1, water of a predetermined level secured on the floor surface on the upstream side of the water flow channel by the standing hollow door body flows into and flows down from the water inlet of the front panel into the hollow door body, The water discharged from the drain outlet at the lower part of the rear panel is drained so as to be once trapped in the drainage sound suppression chamber around the drain outlet at the lower part of the rear panel on the floor surface on the downstream side of the flow channel, or in the recess on the floor surface at the downstream side of the channel By discharging into the stagnant water, the generation of drainage sound and waterfall sound is suppressed, and the diffusion of the generated drainage sound and waterfall sound around the hollow door body is suppressed, and the standing hollow door body falls down. , Noise in the fallen door body based on the inflow from the front panel inlet into the fallen hollow door body, at least a part of the predetermined level of water or normal running water secured on the floor surface upstream of the runway Controls generation and diffusion It smoothly flows down from the drain outlet of the rear panel and is discharged.

(2) A flow path regulating member that causes water of a predetermined water level or normal flowing water secured by the standing hollow door body on the floor surface on the upstream side of the water flow channel to flow down in the hollow door body, for example, siphon in the hollow door body It is not directly related to the door body of the existing fall gate that uses the same, etc., and it does not use a member with a unique shape and structure, for example, by a slight structural change by using a simple shape member such as a flat plate. A flow channel is secured in the hollow door body, flows in from the water inlet of the front panel of the hollow door body, and drains from the drain port of the rear panel, thereby generating and suppressing the sound of falling water and drainage from the conventional same type fall gate. Providing a falling gate to prevent falling water sound with excellent effect.

(3) Further, without greatly changing the outer shape of the hollow door body, the flow path component members having different shapes are selected on the inner side of the front panel and the rear panel which are parallel to each other, and can be easily attached by appropriate attachment means such as welding. Thus, the flow channel in the hollow door body is configured as a flow channel having a different falling sound suppression effect, and at that time, without using another independent member such as a siphon, the desired falling noise suppression effect is achieved. Provided is a falling sound suppression overturning gate that can be expected to have a different water falling sound suppression effect by selecting a flow path regulating member having a simple structure.

(4) According to the invention of claim 2, the parallel left and right side wall portions of the hollow door body configured in a rectangular parallelepiped shape can be displaced on the same vertical plane parallel to the side wall on the downstream side of the water flow channel, By attaching the base of the rectangular parallelepiped hollow door body to the base at the appropriate location on the downstream side of the water flow channel via the mounting shaft, the horizontal flow to the hollow door body due to the water flow flowing into and flowing down into the hollow door body Side pressure is always balanced.

(5) According to the third aspect of the invention, the drain outlet of the rear panel is provided in the lower half of the rear panel of the standing rectangular parallelepiped hollow door body, so that the appropriate place on the downstream side of the flow channel of the falling sound suppression overturning gate. Can be installed in almost the same way as the installation of the existing overturning gate at the appropriate location of the flow channel, and the drain port provided in the lower half of the rear panel of the hollow door body is connected to the rear panel of the door body. Provided is a falling sound suppression overturning gate that can be easily disposed in a staying water in a drainage sound suppression chamber or a recessed portion on the downstream side of a flowing water channel.

(6) According to the fourth aspect of the invention, the base of the standing hollow door body is appropriately mounted in the recess on the downstream floor surface lower than the upstream floor surface of the flow channel through the mounting shaft driven by the driving means. The base in the recessed portion of the downstream floor surface lower than the upstream floor surface of the water flow channel without providing a drainage sound suppression plate around the drain outlet of the rear panel of the hollow door body by being provided with undulation on the base. In addition, the drainage sound of the rear panel of the standing hollow door body is located in the accumulated water in the recessed portion of the downstream floor surface, and the drainage sound is premised on the installation of the drainage sound suppression plate around the drainage port of the hollow door body. Without securing the suppression chamber, the drainage port of the rear panel of the hollow door body standing by the staying water in the concave portion is closed to suppress the generation of drainage sound and waterfall noise from the drainage port and their diffusion.

(7) According to the device of claim 5, the water of a predetermined water level secured by the standing hollow door body on the floor surface on the upstream side of the flowing water channel flows into and flows down from the water inlet of the front panel into the standing hollow door body, The drainage port at the lower part of the rear panel of the standing hollow door body is located on the floor surface on the downstream side of the water flow channel, and is located on the recessed portion of the downstream water flow channel, lower than the upstream floor surface, and thus on the downstream side of the water flow channel. By draining into the staying water in the recess located on the floor surface, the generation of drainage sound and waterfall noise and the diffusion around the hollow door body are suppressed, and the upright hollow door body falls down and the upstream side of the flow channel The water of the planned water level secured on the floor surface or the normal running water on the upstream floor surface of the same flow channel is allowed to flow smoothly.

(8) According to the invention of claim 6, at least a part of the flow path regulating member provided between the parallel front panel and the rear panel of the hollow door body is configured in parallel with the front panel and the rear panel. , At least a part of the reaction force of the water flow flowing down the flow channel in the hollow door body that occurs in the portion configured in parallel with the front panel and the rear panel of the flow path regulating member is balanced in the front-rear direction, and the hollow Reaction force generation that attempts to move the door in the front-rear direction is suppressed.

(9) According to the invention of claim 7, at least a part of each of the flow path regulating members provided between the front panel and the rear panel of the hollow door body is parallel to the front panel, the rear panel, or the front panel, Even if any shape is selected by inclining at a small angle with respect to the rear panel or along a shape of an arc around an axis parallel to the front panel or the rear panel, the hollow Facilitates the selection of flow channel shape that can moderately suppress the sound of falling water and drainage that flows down the flow path inside the door body, and the water flow pressure flowing down the hollow door body acts uniformly on the hollow door body. Therefore, a falling sound suppression overturning gate that operates uniformly over a long period of time is provided.

(10) According to the invention of claim 8, the falling water flow regulating member provided between the parallel front panel and the rear panel of the hollow door body is parallel to the front panel and the rear panel, and the falling water flow regulating member At least a part of the front panel, the same direction as the rear panel or a direction inclined at a small angle relative to the front panel, the rear panel, an arc around the axis in the same direction as the front panel, the rear panel, or any two of them Alternatively, the flow velocity of the flowing water that flows smoothly along the restriction surface of the flowing water flow along the combined shape surface of two or more shapes decreases during this time, and the flow rate of the flowing water that flows down the flow channel in the hollow door body that stands is reduced. In addition, the sound of falling water and the sound of drainage is suppressed, the shape selectivity of the flow path is improved, and the sound of falling water is suppressed. Diffusion of waterfall noise generated in the hollow door body falling water flow is suppressed.

(11) According to the ninth aspect of the present invention, the drain outlet of the rear panel of the rectangular parallelepiped hollow door body having the base portion attached to the base plate disposed at an appropriate position on the floor surface on the downstream side of the flowing water channel is erected. By providing the rear panel so as to be located in the drainage sound suppression chamber surrounded by the drainage sound suppression cover hinged to the outside of the rear panel of the rectangular parallelepiped hollow door body and the outside of the rear panel, Regardless of the shape of the flowing water channel, it is easy to install a falling water suppression overturning gate that can expect the required falling water sound suppression effect.

(12) According to the invention of claim 10, the falling sound generated in the standing hollow door body, the top opening of the standing hollow door body is closed by the dead weight of the top opening cover hinged to the top of the front panel. A considerable part of the top chamber is blocked in the top chamber, and diffusion around the standing hollow door body is suppressed, and the discharge of the predetermined water level due to the falling of the standing hollow door body, or the normal water flow of the flowing water channel falls. When flowing down the hollow door body, the top opening cover is automatically opened by the flowing water and flows down smoothly.

(13) According to the eleventh aspect of the invention, the hollow portion of the upright hollow door body is divided into a front chamber and a rear chamber by the vertical partition wall, and the divided front chamber and rear chamber are divided into the missing portions at the top of the partition wall. In this way, the water flowing in from the water inlet of the front panel and drained from the water outlet of the rear panel becomes sufficiently long by changing the flow direction in the hollow door body. By connecting the lower part and the front side of the lower part of the partition wall by an inclined or concave arc-shaped introduction wall, a falling sound generated by flowing water flowing down and falling through the hollow door body is suppressed.

(14) According to the twelfth aspect of the present invention, the drainage sound suppression chamber, the outside of the rear panel of the standing hollow door body, the inside of the drainage sound suppression cover hinged to the rear panel, and the drainage sound suppression cover The side wall of the water flow channel that the left and right sides abut against each other and the downstream floor surface of the water flow channel are configured in a substantially triangular tube shape, and the drainage sound suppression cover is disposed downstream of the water flow channel of the hollow door body. The rear panel of a hollow door body that stands up in a substantially triangular tubular drainage sound suppression chamber by being folded between the lower side of the fallen hollow door body and the downstream floor surface of the flowing water channel by overturning on the floor surface The drainage sound generated by the falling water discharged from the lower drainage port is confined in the substantially triangular tubular drainage sound suppression chamber, and diffusion around the standing door body is suppressed. In addition, when the drainage sound suppression cover is folded to the lower side of the falling hollow door body, water of a predetermined water level and normal running water secured by the standing hollow door body on the upstream floor surface of the flowing water channel. To flow smoothly.

(15) According to the invention of claim 13, the base of the hollow door body, the drain outlet at the lower part of the rear panel is located on the floor surface on the downstream side of the water flow channel, and the upstream side on the recess of the downstream water flow channel. A drainage opening in the lower part of the rear panel of the standing hollow door body, which is provided in a space lower than the side floor surface, that is, in a recessed portion of the floor surface on the downstream side of the flow channel so that it can be raised and lowered. The lower edge is connected to the lower part of the front panel with a lowering drainage plate, and descends downward from the upper side of the drainage port at the lower part of the rear panel toward the lower part of the front panel. By providing an inversion plate that is moderately spaced from the upper surface of the drain plate and the lower inner surface of the front panel, the inflow water into the standing door body falls smoothly, and the fall water stays in the recess from the drain port. Drained into the water The generation of drainage noise is suppressed by the fluid friction generated at the time, and the hollow door body is folded into the concave portion of the floor surface on the downstream side of the flow channel, and the floor on the upstream side of the flow channel by the standing hollow door body. Water of a predetermined level secured on the surface and normal running water flow down smoothly.

(16) According to the contrivance of claim 14, a strained S-shaped guide plate, a S-shaped guide plate, a lower part of the water inlet at the upper part of the front panel of the rectangular parallelepiped hollow door body and a lower part of the drain outlet of the rear panel, Or, by connecting with any of the zigzag guide plates with the leading and trailing guide surfaces whose top and bottom are almost parallel, the space between the lower part of the water inlet at the upper part of the front panel of the rectangular parallelepiped hollow door and the lower part of the outlet part of the rear panel However, the flow channel based on each selected shape is configured to be correspondingly longer than the vertical distance between the water inlet of the front panel and the drain port of the rear panel, i.e., the water flowing down the water channel is selected. In accordance with the flow path shape of the water channel based on the respective shapes, the water flowing down at least the length corresponding to the vertical interval between the water inlet of the front panel and the drain outlet of the rear panel is received. Would be subject to a large fluid friction resistance than the body frictional resistance, therefore, generated drainage sound of water flowing down the spillway in the hollow door for the standing is correspondingly suppressed decreases.

(17) According to the invention of claim 15, the lower part of the water inlet provided in the upper part of the front panel of the rectangular parallelepiped hollow door body and the lower part of the water outlet provided in the rear panel are connected to the S-shaped guide plate or the top part. And a zigzag guide plate having a descending guide surface whose bottom portion is substantially parallel, or a flow path regulating member made of a combination thereof, and a top surface substantially parallel to any central portion of the flow path regulating member. The triangular prism-shaped reversal body provided with an appropriate interval between the top surface and the flow regulating member (guide plate) of one or both of the S-shaped guide plate or the zigzag guide plate, By providing it above the drainage port inside the rear panel, the space between the lower part of the water inlet at the top of the front panel of the rectangular parallelepiped hollow door body and the lower part of the drainage port of the rear panel is based on the selected shape. The flow channel is configured to be correspondingly longer than the vertical distance between the water inlet of the front panel and the drain port of the rear panel, i.e., the water flowing down the flow channel is the flow channel of the flow channel based on each selected shape. Along the flow path shape, at least the fluid friction resistance that exceeds the fluid friction resistance of the water flowing down the length corresponding to the vertical distance between the water inlet of the front panel and the drain outlet of the rear panel is received. The falling sound generated by the water flowing down the flowing water channel in the standing hollow door is appropriately suppressed and reduced.

Hereinafter, the form for implementing the falling sound suppression falling gate which concerns on this invention is demonstrated with reference to FIGS. 1-11 which show schematically the Examples 1-4 and those modifications. In addition, the same name and the same code | symbol are used for the part which is common in 1st-4th Example and those modifications.

1 to 3 schematically show Example 1 of a falling sound suppression overturning gate according to the present invention. FIG. 1 shows a hollow door body 12 of a falling water suppression overturning gate 10 of Example 1 as a flow channel 5. FIG. 2 is a schematic vertical side view of the state in which it is turned down on the downstream side floor surface 8, FIG. 3 is a schematic vertical side view of the standing hollow door body 12, and FIG. it is water at a predetermined water level H~H + ΔH ₁ secured. However, [Delta] H is the height of the partition wall 23 top of upstanding hollow door body 12 (lower part of the missing portion 24), [Delta] H ₁ is the actual flow of the partition wall 23 height from the top, 26 (two-dot chain line) is the upright hollow door 3 is a schematic flow path of running water in the body 12.

In FIGS. 1 to 3, the hollow door body 12 is appropriately separated and is configured in a substantially hollow box shape by fixing the peripheral portions of the substantially parallel flat front panel 13 and rear panel 14 in a sealed state by welding or the like. . Reference numeral 15 denotes a mounting shaft for mounting the base portion of the hollow door body 12 at an appropriate position on the floor surface 8 on the downstream side of the water flow channel 5 in a undulating manner, and 16 stands the hollow door body 12 up or down via the mounting shaft 15. A drive device such as a hydraulic cylinder to fall (fall down), 17 is a water inlet at the lower part of the front panel 13, 17D is provided above the water inlet 17 (FIG. 3), and removes dust and the like mixed in the flowing water of the water flow channel 5. FIG. 1 schematically shows a screen in which a part (two on the lower side) of the screen is provided with a screen 17D. 18 is a drain outlet at the lower part of the rear panel 14, 19 is an upstream floor surface 7 of the water flow channel 6, and a front panel 13 lower part of the standing hollow door body 12 so that water does not always leak regardless of the undulation of the hollow door body 12. watertight rubber coupling, 19 ₁ a side wall 6,6 of the left and right side portions and the spillway 5 of the hollow door body 12, a watertight rubber is brought into contact so as not to always leak regardless undulating hollow door body 12, 20 The top opening 20D of the hollow door 12 is a top chamber of the standing hollow door 12, and the top chamber 20D is opened to the atmosphere.

A suction sound (for example, a siphon tube (not shown)) generated when water of a predetermined water level H + ΔH ₁ flowing into the hollow door body 12 rising from the water inlet 17 at the lower part of the front panel 13 flows into the standing hollow door body 12. Diffusion (leakage) from the inside of the standing hollow door body 12 through the top chamber 20D, that is, around the falling sound suppression overturning gate 10 is suppressed. The The base part of the top opening cover 21 is attached to the top part of the front panel 13 of the hollow door body 12 erected by a hinge 22, and the top opening 20 is almost always closed by its own weight.

23 is a partition wall that extends substantially in the length (vertical direction in FIG. 3) direction of the upright rectangular parallelepiped hollow door body 12 and is positioned substantially at the center of the front panel 13 and the rear panel 14, and 23A is a concave arc below the partition wall 23. The (arc) -shaped lead-out portion, 23AA is the center line of the arc-shaped concave arc of the concave arc-shaped lead-out portion 23A, and the center line 23AA of this arc-shaped concave arc 23A is parallel to the mounting shaft 15, that is, the rectangular parallelepiped hollow door Parallel to the front panel 13 and the rear panel 14 of the body 12 in parallel. Reference numeral 24 denotes a missing portion in the upper part of the partition wall 23 (FIG. 3). The missing portion 24 communicates with the front and rear (left and right in FIG. 3) side chambers in the rectangular hollow door body 12, and the missing portion 24 stands upright. The interior of the door body 12 forms an overflow section for water that flows (overflows) from the front chamber (right side of the partition wall 23 in FIG. 3) to the rear chamber (left side of the partition wall 23 in FIG. 3). Reference numeral 25 denotes an inclined introduction wall (horizontal in FIG. 3) that connects the lower edge of the water inlet 17 at the bottom of the front panel 13 and the front (right in FIG. 2) side surface of the partition wall 23 and introduces the inflow water into the hollow door body 12. The shape of the introduction wall is schematically shown).

Although not shown, the inclined introduction wall 25 can be configured as a concave arc-shaped introduction wall, and the concave arc-shaped introduction wall is configured as an arc (concave arc) -shaped introduction wall {note that this arc (concave arc) The center line of the arc of the circular introduction wall is configured to be parallel to the front panel 13 and the rear panel 14 of the hollow door body 12, that is, the center line of the circular arc of the circular arc (concave arc) introduction wall is By configuring the hollow door body 12 so as to be parallel to the front panel 13 and the rear panel 14, the concave arc-shaped lead-out portion 23A of the concave arc-shaped lead-out portion 23A below the partition wall 23 of the hollow door body 12 is provided. Is configured in the same manner as the center line 23AA of the center line of the arc-shaped concave arc of FIG. 2 (see FIG. 2), the hollow door body from the water inlet 17 of the front panel 13 by the concave arc-shaped arc-shaped introduction wall. 12 inductive water inductivity Layers improved.

27 is a drainage sound suppression cover provided on the outside (left in FIG. 3) of the drain port 18 at the lower part of the rear panel 14, and left and right above and below the drain port 18 at the lower part of the rear panel 14 of the standing hollow door body 12. Hinges 28 are attached to both sides, the drainage sound suppression cover 27, the lower part of the rear panel 14 of the standing hollow door 12, the left and right side walls 6, 6 of the water flow channel 5, and the downstream floor 8 (downstream of the water flow channel 5). The waterfall sound suppression chamber 33 having a triangular cylindrical shape is configured. 27A schematically shows a state in which the drainage sound suppression cover 27 is opened slightly (somewhat) by drainage from the drain port 18 (the opening degree is greatly exaggerated in FIG. 3) by a broken line. 27B is a drainage sound suppression cover in a folded state to the lower side of the hollow door body 27B lying on the downstream floor surface 8 of the flowing water channel 5.

(Effect of Example 1)
The falling sound suppression overturning gate 10 according to the first embodiment is hollow in a base 9 provided between the upstream and downstream floor surfaces 7 and 8 of an appropriate place of the flowing water channel 5, precisely on the downstream floor surface 8 adjacent to both. The base of the door body 12 is rotatably attached to the mounting shaft 15, and the hollow door body 12 is erected through the mounting shaft 15 by an appropriate driving device 16 such as a hydraulic cylinder, and the hollow door body 12 is in a standing state. of flowing water channel 5, to ensure the water of the lowest inflow water level H on the upstream side floor surface 7, the water acceptable variation level width [Delta] H ₁ of a predetermined water level (H~H + ΔH _1), a predetermined water level (H~H + ΔH ₁ ) Is allowed to flow into the front chamber of the hollow door 12 rising from the water inlet 17 at the lower part of the front panel 13, and is once raised along the front side of the partition wall 23, and then back through the missing portion 24 at the top of the partition wall 23. Let it flow into the side chamber, flow down as shown in the water flow path 26, drop it down, and drain it. Drained into the drainage sound suppression chamber 33 from the mouth 18. The lower edge of the drainage port 18 of the standing hollow door body 12 is lower by hb ₁ in FIG. 4 than the floor surface 7 on the upstream side of the flow channel 5, and the downstream side floor surface 8 of the flow channel 5 that is the drainage surface is further lower by hb _2. From (hb ₁ + hb ₂ = hb), if attention is paid to the drainage sound when the water of the predetermined water level (H to H + ΔH ₁ ) is drained on the floor surface 8 on the downstream side of the flow channel 5, H + hb _{1 to} H + ΔH ₁ + hb ₁ : up to the lower edge of the drain outlet 18) or (H + hb to H + ΔH ₁ + hb: height to the floor 8 on the downstream side of the flow channel 5).

At least a part of the top opening 20 is open to the atmosphere, and the overflow water in the missing part 24 at the top of the partition wall 23 is substantially the same level as the water at the predetermined water level (H to H + ΔH ₁ ). It flows like a two-dot chain line 26 in FIG. The falling sound generated by falling water in the standing hollow door body 12 is generally confined in the top chamber 20D, and its diffusion is suppressed. Incidentally, according to the test according to Example 1 of the applicant, the top portion of the top chamber 20D of the standing hollow door body 12 is normally almost closed by the weight of the top opening cover 21, so that the water inlet 17 Even in a state where the upper half portion is opened, compared to the case where the top chamber 20D is not provided (for example, the top opening 20 is always opened), the falling sound suppression overturning gate 10 has a standing hollow door body 12 inside. The generated falling noise could be suppressed a little.

Further, since the top opening 20 of the standing hollow door body 12 is closed by the weight of the top opening cover 21 provided at the top of the front panel 13, the hollow door body 12 is placed on the floor 8 on the downstream side of the water flow channel 5. When overturning, the top opening cover 21 is rotated around the hinge 22 at the base by the flowing water in the hollow door body 12 and is opened as indicated by the broken line 21A in FIG. The water having a predetermined water level H to H + ΔH ₁ flowing through the water or the normal running water in the flowing water channel 5 is allowed to flow down smoothly.

The falling sound suppression overturning gate 10 of the first embodiment includes a drainage sound suppression chamber 33 surrounded by a drainage sound suppression cover 27 outside the drainage port 18 (left in FIG. 3) on the lower side of the rear panel 14 of the standing hollow door body 12. However, for example, by making the left and right side edges of the drainage sound suppression cover 27 sufficiently close to the left and right side walls 6 and 6 of the water flow channel 5, for example, If the high water tightness is ensured, the interior of the standing hollow door body 12 is dropped, and the predetermined water level H + hb _{1 to} H + ΔH ₁ + hb ₁ (where hb ₁ is the floor on the upstream side of the flow channel 5 at the lower edge of the drain port 18. at a distance from 7: water numerals hb ₁ endowed part of FIG. 4) is, when it is drained from the drain outlet 18, the fluid pressure ha drainage sound reduction chamber 33 rises above atmospheric pressure (drainage sound reduction Around the hinge 28 due to its own weight, In the hollow door body 12 where the fluid pressure ha (the fluid pressure ha in the drainage sound suppression chamber 33 is almost uniform everywhere) stands up through the drain port 18 (in balance with the counterclockwise torque in FIG. 3). As a result, the effective head (predetermined water level: H + ΔH ₁ + hb ₁ ) is reduced by an amount corresponding to the same fluid pressure ha, and thus the water falling sound generated by the water falling in the standing hollow door body 12 is generated. Further, the diffusion of the falling sound around the overturning gate 10 is suppressed by a corresponding amount. In addition, the waste water sealed in the substantially triangular prism-like drainage sound suppression chamber 33 sequentially flows out from between the end portion of the drainage sound suppression cover 27 and the downstream floor surface 8 of the water flow channel 5.

When it is not necessary to take water of a predetermined water level (H to H + ΔH ₁ ) secured on the upstream floor surface 7 of the water flow channel 5, the hollow door body 12 erected via the mounting shaft 15 by the drive device 16 is provided. 3, turning counterclockwise from the standing state of FIG. 3 to fall on the downstream floor surface 8 of the water flow channel 5 of FIG. 2 and discharging the water of a predetermined water level (H to H + ΔH ₁ ), the drainage sound suppression cover The lower end of 27 moves from the state of FIG. 3 to the left side, and is folded under the fallen hollow door body 12 as shown in 27B of FIG.

When the standing hollow door body 12 falls on the downstream floor surface 8 of the flowing water channel 5, the residual water in the standing hollow door body 12, a predetermined water level (H to H + ΔH) on the upstream floor surface 7 of the flowing water channel 5. ₁ ) At least a part of water or normal running water that flows (flows down) on the upstream floor surface 7 of the flowing water channel 5 passes through the water inlet 17 of the front panel 13 of the fallen hollow door 12 from the inside. 2, the top opening cover 21 is rotated from the closed state shown by the solid line in FIG. 2 in the clockwise direction around the hinge 22 as shown by the broken line 21 </ b> A to open the top opening 20. The water at the water level (H to H + ΔH ₁ ) or normal running water is allowed to flow smoothly.

Next, 10A of the falling sound suppression overturning gate according to Embodiment 2 of the present invention will be described with reference to the schematic longitudinal sectional view of the standing hollow door body 12A in FIG. In addition, the same name and the same code | symbol are used for the part which is common in the said Example 1. FIG. The falling sound suppression overturning gate 10 </ b> A according to the second embodiment is configured so that the base of the standing hollow door body 12 according to the first embodiment is formed between the downstream floor surface 8 and the upstream floor surface 7 on the downstream water floor 8. A small weir 8A is provided at a position slightly wider than the height of the hollow door body 12A from the boundary, and the left and right sides thereof extend to the left and right side walls 6 and 6 of the water flow channel 5 to form a recess 8B, upstream of the recess 8B. The base 9 provided in the vicinity of the boundary with the side floor 7 is attached to the base of the hollow door body 12A with the attachment shaft 15 and the hollow door body 12 of the first embodiment is attached to the base 9 via the attachment shaft 15. Install in the same way.

In the hollow door body 12A of the falling sound suppression overturning gate 10A of the second embodiment, the drain port 18 at the lower part of the rear panel 14 in the standing state is always covered with the accumulated water in the recess 8B, that is, at the lower part of the rear panel 14. If the top of the drainage port 18 is disposed so as to be positioned below the surface 30A of the accumulated water in the recess 8B, the drainage port 18 is always closed by the accumulated water in the recess 8B, and the hollow door body 12A stands up. In this case, the drainage water receives a corresponding flow frictional resistance with the staying water in the concave portion 8B, and as a result, The generation of drainage noise due to the drainage is suppressed by a corresponding amount. The recess 8B is arranged so that the front panel 13 is positioned lower than the upstream floor surface 7 of the water flow channel 5 when the standing hollow door body 12A falls within the recess 8B, and the recess 8B stays in the recess 8B. Turn over so that it is below water surface 30A. The preliminary structure and operation are substantially the same as in the first embodiment.

In the second embodiment, the water pressure of the water staying in the recess 8B of the downstream floor surface 8 of the flow channel 5 is used as the back pressure of the falling water in the standing hollow door body 12A through the drain port 18 at the bottom of the rear panel 14. Although not intended to hang itself, if configured as shown in FIG. 4, the water level hb ₁ higher than the lower edge of the drain outlet 18 is naturally provided at the lower part of the rear panel 14 of the standing hollow door 12 </ b> A. Corresponding drain pressure is applied as back pressure to the falling water in the hollow door body 12A standing through the drain port 18, and the pressure corresponding to this water level hb ₁ is the back pressure of falling water in the standing hollow door body 12A. As a result, the water level in the standing hollow door body 12A is reduced by a corresponding amount as compared with the case where there is no stagnant flowing water in the recessed portion 8B. As a result, the falling water sound in the standing hollow door body 12A. Will decrease accordingly. hb ₂ is the distance between the lower edge of the drainage port 18 and the downstream floor 8 (the bottom surface of the recess 8B) of the water flow channel 5, and the interval hb ₂ is a recess with no accumulated water, such as the beginning of falling water into the recess 8B of this device. In this case, the drop H + ΔH ₁ of the drainage from the drainage port 18 is precisely H + Δ ₁ + hb = H + ΔH ₁ + hb ₁ + hb ₂ , and therefore the predetermined water level H + ΔH ₁ Naturally, a falling sound and a draining sound corresponding to the water level H + ΔH ₁ + hb ₁ + hb ₂ to which the amount corresponding to the draining height hb ₂ is added are generated.

On the other hand, if there is stagnant water in the recess 8B, the drainage port 18 of the hollow door body 12A standing up by the stagnant water is covered, so that the drainage from the drainage port 18 of the standing hollow door body 12A does not fall. flows down substantially horizontally, in this case, the drainage from the drain outlet 18 fall H + [Delta] H _1, to be precise the _{H + ΔH 1 + hb = H} + ΔH 1 + hb 1 + in hb _2, a part of hb ₌ hb 1 + hb ₂ The water pressure corresponding to the above acts as a negative pressure on the falling water in the hollow door body 12A rising through the drain port 18 of the standing hollow door body 12A, that is, in the recessed portion 8B of the second embodiment. If there is, the water pressure corresponding to the height (water level) hb of the stagnant water is reduced from the drop H + ΔH ₁ + hb. Also in this respect, the generation of the appropriate falling sound and drainage sound is suppressed.

Modification 1 of hollow door

In the falling doors 10 and 10A hollow door bodies 12 and 12A of the first and second embodiments, the water inlets 17 and 17 are schematically shown at the lower portion of the front panel 13, but the water inlet 17 It can also be provided at the center of the front panel 13 (not shown). In this case, a part of the range H (minimum water level) that can be taken from the water of the predetermined water level H + ΔH ₁ on the upstream floor surface 7 of the flow channel 5 is obtained. Aside from the fact that the water flow height of the water inlet 17 at the center of the front panel 13 is increased correspondingly, the preliminary structure, operation, etc. are substantially the same as those of the falling sound suppression falling gates 10, 10A of the first and second embodiments. is there.

Variation 2 of the hollow door body

  The lower edge of the water inlet 17 and the lower part of the partition wall 23 in the lower part of the front panel 13 (same in the central part) and the lower part of the partition wall 23 of the standing hollow door bodies 12 and 12A in Examples 1 and 2 are shown by broken lines in the schematic longitudinal sectional view of FIG. Can be configured as a concave arc-shaped introduction portion 23C schematically shown in FIG. 1, and if configured in such a manner, the water of a predetermined water level flowing into the hollow door bodies 12 and 12A standing from the water inlet 17, the first embodiment, 2 flows in more smoothly than the inflow into the standing hollow door bodies 12 and 12A, and the inflow resistance in the upright hollow door body concave arc-shaped introduction portion 23C in 12 and 12A is reduced from the former. The concave arc-shaped introduction portion 23C can be configured as a concave arc (arc) -shaped introduction portion 23C whose center line is parallel to the front panel 13 and the rear panel 14 of the hollow door body 12. Moreover, this concave arc-shaped introduction part 23C can also be comprised as a short 2nd inclined introduction wall (illustration omitted), and also in this modification 2, it is the same as the above, and is good introduction | transduction of inflow water. Works.

Next, a third embodiment of the falling sound suppression overturning gate according to the present invention will be described with reference to FIGS. In addition, the same name and the same code | symbol are used for the part which is common in the said Example 1. FIG. Apart from the necessary items, the description of the structure and operation of the parts common to the first embodiment will be omitted.

Reorganization required FIG. 5 is a schematic plan view illustrating a state in which the hollow door 42 of the falling sound suppression overturning gate 40 according to the third embodiment is laid down on the floor 8 on the downstream side of the water flow channel 5, and FIG. 6 is a schematic longitudinal description thereof. FIGS. 7 and 7 are schematic longitudinal sectional views of the standing hollow door body 42. In FIG. 7, a predetermined water level H to H + ΔH ₁ secured by the standing hollow door body 42 (exactly, “+ hb: stay in the recess 8B”). Water level = hb ₁ + hb ₂ ”, but in the following description, the description of“ + hb ”is omitted for simplification of description). The water flowed into the hollow door body 42, and the flowing down water flow 56 in the hollow portion was schematically shown by a broken line (see FIG. 7) at the same time.

The standing hollow door body 42 according to the third embodiment has a front panel 43 provided with a water inlet 47 in the upper part (FIG. 7) and a rear panel 44 provided with a drain port 48 in the lower part, approximately parallel to each other with an appropriate interval. The two panels 43 and 44 are connected to each other by a slanted partition wall 64 that is lowered (left side in FIG. 7), and the peripheral portions of the panels 43 and 44 are sealed to form a box-shaped (rectangular) hollow door body. 42, and the base portion is pivotally attached to a base 9 provided at an appropriate position on the floor surface 8 on the downstream side of the water flow channel 5 by the attachment shaft 15 so that the undulation operation can be performed by an appropriate drive device 16 such as a hydraulic cylinder. .

47 is a water inlet at the top of the front panel 43 of the standing hollow door body 42, 48 is a drain outlet at the bottom of the rear panel 44, 50 is a top opening of the standing hollow door 42, 50D is its top chamber, and 61 is its front panel 43. The fork-shaped screen 61 extends from the lower edge of the top opening 47 to the inner rear side (upper left side in FIG. 7) and is disposed at an appropriate interval in the left-right (up-down direction in FIG. 5) direction. On the top, a net 61D can be provided as necessary (in FIG. 5, a screen provided with a screen 61D on a part of the fork-shaped screen 61 is schematically shown). The dust mixed in the running water of the path 5 is scooped up to prevent the standing hollow door body 42 from flowing into. 62 is a tip-inversion reversing plate that faces the inner side of the lower portion of the front panel 43 from the inside of the central portion of the rear panel 44, 63 is a missing portion at the end of the reversing plate 62, and 64 is an inner lower portion of the front panel 43 and a lower portion of the drain outlet 48 of the rear panel 44. It is a tip-down drainage plate that connects (inside the rear panel 44).

In the third embodiment, a hollow door that stands up from a water inlet 47 in the upper part of the front panel 43 with water of a predetermined water level (H to H + ΔH ₁ ) secured on the upstream floor surface 7 of the water flow channel 5 by the standing hollow door body 42. When it flows into the body 42, it flows down along the front side (right side in FIG. 7) of the rear panel 44 of the standing hollow 7 body 42, as schematically indicated by a chain line 56 in FIG. And then flows down along the upper surface of the drainage plate 64 to the downstream floor surface 8 of the flow channel 5 from the drainage port 48 (in this case, the recess 8B). Inside).

The top part of the drainage sound suppression cover 27 that covers the outside (left in FIG. 7) side of the drain port 48 is hinged to the outside of the top part of the drain port 48 below the rear panel 44 (outside the rear panel 44) so as to be rotatable. The preliminary structure and operation are substantially the same as the drainage sound suppression cover 27 provided around the discharge port 18 of the first embodiment, and the drainage sound of the drainage discharged from the drainage port 48 is the drainage sound suppression cover 27, The lower outer side of the rear panel 44 of the standing hollow door body 42 (left side in FIG. 7), the left and right side walls 6 and 6 of the water flow channel 5, the downstream floor surface 8 of the flow water channel 5 (including the water flowing on the downstream floor surface 8). As in the drainage sound suppression chamber 33 formed by the drainage sound suppression cover 27 of the first embodiment, the drainage sound suppression chamber 33 is surrounded by a substantially triangular prism-shaped drainage sound suppression chamber 33. Through drainage port 48, falling water flowing down Confining drainage sound generated with the waste water that suppresses the diffusion.

The top portion of the top chamber 50D has an opening 50, but approximately 30 to 40% of the area of the top opening 50 of the standing hollow door body 42 is closed by the fork-shaped screen 61, so that the hollow standing up from the top chamber 50D. Diffusion of water falling sound around the door body 42 is appropriately suppressed. If the net 61D is provided on the entire upper surface of the fork-shaped screen 61, the falling sound diffused from the top opening 50 is more effectively suppressed. In the third embodiment, since the hollow door body 40 is configured to be narrow by the partition wall 60, the diffusion of the falling sound collected in the top chamber 50D to the adjacent top chamber 50D is suppressed.

Next, a fourth embodiment of the falling sound suppression overturning gate according to the present invention will be described with reference to FIG. FIG. 8 is a schematic longitudinal side view of the falling sound suppression overturning gate 40A according to the fourth embodiment in a state where the hollow door body 42A stands up. In addition, the same name and the same code | symbol are used for the part which is common in the said Example 3. FIG. Apart from the necessary items, the description of the structure and operation of the parts common to the third embodiment will be omitted.

The base part of the hollow door body 42A of the falling sound suppression overturning gate 40A of the fourth embodiment reaches the downstream floor surface 8 of the water flow channel 5 as shown in FIG. 8, and the left and right sides reach the side walls 6 and 6 of the water flow channel 5. A driving device such as a hydraulic cylinder (refer to reference numeral 16 in FIG. 5) not shown in FIG. 8 is attached to the base 9 in the vicinity of the upstream floor surface 7 of the flow channel 5 in the recess 8B configured by providing the small weir 8A. The mounting shaft 15 that is driven is mounted in substantially the same manner as the hollow door body 42 of the third embodiment. The hollow door body 42A causes the hollow door body 42A to fall over in the recess 8B, and the front panel 43 of the hollow door body 42A is turned over so as to be lower than the staying water surface 30A in the recess 8B. The hollow door body 42A has a falling sound suppression cover that covers the drainage port 48 on the outside of the drainage port 48 below the rear panel 44 (refer to the reference numeral 27 in FIG. ) Except for the point (similar to the second embodiment) is provided and has substantially the same structure as the hollow door body 12 of the third embodiment.

In the falling water suppression overturning gate 40A of the fourth embodiment, the upper end portion of the drain port 48 at the lower part of the rear panel 44 of the standing hollow door body 42A is from the staying water surface 30A in the recessed portion 8B of the downstream floor surface 8 of the water flow channel 5. As long as it is at the lower level, the falling water in the standing hollow door body 42A flows into and out of the staying water, and the generation of drainage sound is appropriately suppressed by fluid friction with the staying water. In the state where the hollow door body 42A stands up into the recess 8B, the front panel 43 is disposed so as to be lower than the floor surface 7 on the upstream side of the water flow channel 5, and the standing hollow door body 42A falls down. Water of a predetermined water level secured on the upstream floor surface 7 of the flowing water channel 5 and a normal water flow on the upstream floor surface 7 of the flowing water channel 5 are allowed to flow smoothly. The preliminary structure and operation are substantially the same as in the third embodiment.

Modification examples of embodiments 3 to 5 of the hollow door body

Next, modifications 3 to 5 of the hollow door body of the falling sound suppression overturning gate according to the present invention will be described with reference to FIGS. In the third and fourth embodiments, the water inlet 47 of the falling sound suppression overturn gates 70, 80, 90 including the hollow door bodies 72, 82, 92 of the modified examples 3-5 is provided at the top of the front panel 43. However, the top chamber 50D of the hollow doors 72, 82, 92 does not have the fork-shaped screen 61 of the third embodiment. Further, the top opening cover 51 is provided in the top opening 50 of the top chamber 50D, and the drainage sound suppression cover 27 is provided outside the drainage port 48 at the lower part of the rear panel 44 in that the top door 20D of the hollow door body 12 of the first embodiment is provided. The hollow door bodies 12 and 42 of the first and third embodiments are provided in that the top opening cover 21 is hinged to the top opening 20 and the drainage sound suppression cover 27 is attached to the outside of the drain outlet 18 at the bottom of the rear panel 14. Is almost the same. However, the drainage channels 74, 84, 94 in the hollow door bodies 72, 82, 92 of these modified examples 3-5 are the hollow door bodies 12, 12A, 42, of the first to fourth embodiments as described below. It is different from any falling water channel of 42A.

Variation 3 of the hollow door body

In FIG. 9, 72 is a hollow door body in which the falling sound suppression overturning gate 70 of Modification 3 stands, 73 is a strained S-shaped guide plate provided in the hollow portion of the hollow door body 72, and the top of the strained S-shaped guide plate 73. The lower end of the large convex arc-shaped portion and the upper end of the lower small concave arc-shaped portion are connected by a tangential flat plate, and the upper end of the large convex arc-shaped portion at the top of the strained S-shaped guide plate 73 is raised. The hollow door 72 is attached to the lower part of the top opening 47 of the front panel 43 of the hollow door 72 so that it is horizontal or slightly lowered from the horizontal, and the end of the small concave arc-shaped part is located below the drain port 48 at the lower part of the rear panel 44 and the inner surface of the rear panel 44. When water of a predetermined water level H to H + ΔH ₁ from the water inlet 47 flows into the standing hollow door body 72, it is generally along the strained S-shaped guide plate 73, Tapered drop between the distorted S-shaped guide plate 73 and the inner surface of the rear panel 44 The water falls along the channel 74, that is, the flowing water channel 76, and is drained from the drain port 48 onto the downstream floor surface 8 of the flowing water channel 5 into the drained sound suppression chamber 33 secured by the drained sound suppression cover 27. . The preliminary structure and operation are substantially the same as in the third embodiment.

Modification 4 of hollow door body

In FIG. 10, 82 is a standing hollow door body of the falling sound suppression overturning gate 80 of the modified example 4, 83 is an S-shaped guide plate in the standing hollow door body 82, and the S-shaped guide plate 83 is an entrance of the upper part of the front panel 43. Although it is substantially the same as the hollow door body 72 of the modified example 3 in that the lower part of the water port 47 and the lower part of the drain port 48 at the lower part of the rear panel 44 are connected, the convex arc part and the concave arc part of the S-shaped guide plate 83 are substantially the same. It is configured as an arcuate part having the same diameter (slightly large diameter), and the central part connecting the arcuate parts is substantially parallel to the center part of the front panel 43 and the rear panel 44 of the hollow door 82, or of the connecting part. The lower part is configured to be closer to the inside of the lower part of the front panel 43 than the upper part, that is, to be slightly reversed (retracted). The lower part (left in FIG. 10) of the connecting part of the S-shaped guide plate 83, on the inner side of the rear panel 44 above the drain port 48 (FIG. 10), is almost the same as the connecting part (central part) of the S-shaped guide plate 83. in parallel, triangular inversion member 85 comprises a top surface 85 ₁ residing moderately interval constituting a drainage passage 84 therebetween are provided, the hollow door water at a predetermined water level H~H + ΔH ₁ from the water inlet 47 is erected When it flows into the body 82, it falls along the S-shaped guide plate 83 along the falling water channel 84 and the flowing water channel 86, and suppresses drainage sound configured on the floor 8 on the downstream side of the flowing water channel 5 from the drain port 48. Drained into the chamber 33. The preliminary structure and operation are substantially the same as in the third embodiment.

Modification 5 of hollow door body

In FIG. 11, reference numeral 93 denotes a zigzag guide plate that is provided in the upright hollow door body 92 of the modified example 5 and guides water falling in the hollow door body 92, and the zigzag guide plate 93 is an upper part inside the front panel 43. and the water inlet 47 lower, connecting the inner bottom of the drain opening 48 the lower part of rear panel 44, top and bottom with the tip down the induction unit 93 _1, 93 ₂ which is substantially parallel, rectilinear central portion above edge of said top the lower part of the guiding portion 93 _1, the bottom part is respectively connected to the upper portion of the previous downlink induction unit 93 _2, the lower portion of the connecting portion is retracted so as to close enough large in the front panel 43, as a whole form a zigzag shape (although a lower former down guiding portion 93 ₁ of the top connecting portion of the upper linear central portion is suitably chamfered, flow down the drainage flowing down the hollow door 92 to the upright smoothly, to drainage) so It is configured, after being inverted by drainage path 94 in appropriate intervals comprised between the top surface 95 ₁ of the straight central portion and the triangular inversion member 95 of the zigzag-shaped guide plate 93, along the bottom guide surface 93 ₂ flow Then, it is drained into the drainage sound suppression chamber 33 formed on the floor surface 8 on the downstream side of the water flow channel 5 through the drainage port 48 below the rear panel 44. The preliminary structure and operation are substantially the same as in the third embodiment.

Arrangement of the bases of the modified examples 3 to 5 of the hollow door body in the concave portion of the floor surface on the downstream side of the flowing water channel

Although the hollow door bodies 72, 82, 92 are not shown, each base portion can be attached to a base 9 (see FIGS. 4, 8) provided in the recess 8 </ b> B of the downstream floor surface 8 of the water flow channel 5, In this case, the drainage sound suppression cover 27 at the lower part of the rear panel 44 of the standing hollow door bodies 72, 82, 92 is removed, and the base portions of the standing hollow door bodies 72, 82, 92 are connected to the floor surface on the downstream side of the water flow channel 5. The above-mentioned implementation is carried out by attaching to a base 9 (see FIGS. 4 and 8) provided in the recess 8B of 8 by a drive means, for example, a hydraulic cylinder 16 or the like, by a mounting shaft 15 that is driven up and down. What provides substantially the same operation and effect as the hollow door bodies 12A and 42A of Examples 2 and 4 is provided.

Spilling sound suppression effect of the top cover of the hollow door

When water of a predetermined water level H to H + ΔH ₁ flows into the standing hollow door body 42 from the water inlet 47 on the front panel 43 of the standing hollow door body 42, it flows down as a convex arc-shaped water flow 56 (FIG. 7) in side view. Then, it collides with the inner side surface of the rear panel 44, flows down through the hollow door body 42 standing along the inner side surface, and is discharged from the drain port 48. Gather in the room 50D. Although the top opening 50 of the top chamber 50D is almost always closed by the top opening cover 51, the upper water inlet 47 of the front panel 43 on the front (right in FIG. 6) side of the top water fall sound suppression chamber 50D is usually The water at a predetermined water level H to H + ΔH ₁ flowing in from the water inlet 47 at least partially closes the lower side and opens the upper half.

The falling sound generated by the falling water 56 flowing in a convex arc shape in the standing hollow door body 42 includes, for example, those that face the lower surface of the top opening cover 51 and are in contact with and reflected by the lower surface. , The inner surface of the rear panel 44 (the junction between the front panel 43 and the rear panel 44), or the one that contacts and is reflected toward the partition wall 60, and faces the downstream floor 8 of the water flow channel 5 and the downstream floor 8 In addition to the reflection of the water flowing in the convex arc shape, there is a new water falling sound accompanying the progress of the flowing water 56, and the water falling sound having a later phase than that of the former is sequentially generated. Even if is canceled out, the remaining remaining portion is closed in the top chamber 50D. And when there is little inflow water from the top water inlet 47 of the front panel 43 of the front door 43 of the standing hollow door body 42 (the sound of falling water is relatively small), most of the water inlets 47 above the front panel 43 are opened. As will be understood, apart from this case, when a large amount of water falls from the water inlet 47 to generate a large sound of falling water, most of the water inlet 47 is blocked, so that the hollow door body 42 is erected by a large amount of water. Diffusion of the water falling sound generated in the interior around the standing hollow door body 42 through the opening of the water inlet 47 is appropriately suppressed.

The hollow door bodies 12, 12A, 42, 42A, 72, 82, and 92 have predetermined widths that are substantially parallel to each other, and the end surfaces of the rear panels 14 and 44 are connected to the front panels 13 and 43 and the rear panel 14 respectively. , 44 as a plurality of unit hollow door bodies of the same shape and the same size, and by connecting them together, the hollow door body can be configured with high strength, and a plurality of unit hollows of the same shape and the same size can be formed. The falling sound generated in the door body is blocked by the partition (connection) walls 31 and 60 at the respective ends and hardly transmitted to the adjacent unit hollow door body, and the falling sound around the hollow door body is generated. Diffusion is more effectively suppressed.

In addition, if a screen 61 having an appropriate shape such as a fork shape or a net shape is provided that is positioned in the top hollow chamber 50D of the standing hollow door bodies 42 and 42A and extends obliquely upward from the lower side of the water inlet 47 on the front panel 43, Even if dust or the like is mixed in the inflowing water from the flow channel 5, the top and the top can be scooped up by appropriately shaped screens 61, 61 D such as forks and nets in the upper water inlet 47 of the front panel 43. Inadvertent entry of foreign matter into the top chamber 50C from the opening 50 is suppressed or prevented, and the falling sound generated in the standing hollow door body is released from the opening of the top chamber 50C. , 61D.

In addition, the lower part of the water inlet at the upper part of the front panel of the hollow door body and the lower part of the drain outlet at the lower part of the rear panel are provided with a distorted S-shaped guide plate, an S-shaped guide plate, or a descending guide surface whose top and bottom are substantially parallel. If connected by any of the zigzag induction plates provided, not only the inflow water into the standing hollow door body smoothly flows in, falls down, the inflow, the generation of the sound of falling water is suppressed, but by the selection of such a configuration, The strength of the hollow door body is correspondingly improved.

Further, the s-shaped guide plate 83, the top and bottom of the front door 43 below the water inlet 47 below the rear panel 44 and the lower part of the drain port 48 below the rear panel 44 are guided downwardly so that the top and bottom are almost parallel. surface ₉₃ 1, 93 top surface ₈₅ to substantially parallel to the central portion of the zigzag-shaped guide plate 93 having _two 1, the triangular inversion member 85, 95 comprises a 95 _1, the top surface ₈₅ 1, 95 ₁ and the S-shaped On the inner side of the rear panel 44, above the drain outlet 48 so as to ensure a suitably spaced water channel 84, 94 between the guide plate 83 or the central portion of the flowing water regulating member 93 such as the zigzag guide plate 93. If provided, a zigzag guide plate having an S-shaped guide plate or a leading down guide surface whose top and bottom portions are substantially parallel to each other at the lower part of the water inlet at the upper part of the front panel of the hollow door body and the lower part of the drain port at the lower part of the rear panel. During ~ The rear panel of the triangular prism-like inverted body having a top surface substantially parallel to the portion is secured so as to ensure a water passage with an appropriate interval between the top surface and the central portion of the S-shaped guide plate or zigzag guide plate. Therefore, it will be installed on the upper side of the drainage port, and therefore it will smoothly flow, flow down, and flow down into the water flow path that is slightly longer than the height of the standing hollow door body, and the generation of water flow and sound of water flow will be suppressed accordingly. Is done. In addition, by selecting such a configuration, the lower part of the water inlet at the upper part of the front panel of the hollow door body and the lower part of the drain outlet at the lower part of the rear panel are provided with an S-shaped guide plate, a leading down guide surface whose top and bottom are substantially parallel. The triangular door-shaped inverted body having a top surface substantially parallel to the central portion of the zigzag guide plate is attached to the top surface and the flow-down water flow regulating member such as the S-shaped guide plate or the zigzag guide plate. The body is reinforced accordingly.

Furthermore, the drain outlet of the rear panel of the standing hollow door body is disposed on the floor surface on the downstream side of the flowing water channel so as to be positioned in a space lower than the upstream floor surface on the recess on the downstream side of the flowing water channel. Therefore, the discharge port at the lower part of the rear panel of the standing hollow door body is always located in the concave portion, so that the drainage from the discharge port is discharged into the accumulated water in the concave portion, and as a result, the hollow door where the overturning gate stands. The generation of the falling sound of the flowing water flow of the body is correspondingly suppressed, and the diffusion of the falling sound generated by the flowing water flow of the standing hollow door body is also suppressed accordingly.

  In addition, the base of the hollow door body, the drain outlet at the lower part of the rear panel is located on the floor surface on the downstream side of the flow channel, and the space on the concave portion of the downstream channel, which is lower than the upstream floor surface, that is, Provided so that it can be raised and lowered on the base in the recess so that it is located in the recess on the floor surface on the downstream side of the flow channel, and the lower edge of the drain outlet at the lower part of the rear panel of the standing hollow door body and the lower part inside the front panel are lowered first Connected by a drain plate, and descends downward from the upper inner side of the drain outlet at the lower part of the rear panel toward the lower part of the front panel, and the missing end portions are the upper surface of the lower drain plate and the lower inner surface of the front panel. If the reversing plate is appropriately spaced from the outside, the inflowing water into the standing door body falls smoothly, and fluid friction generated when the falling water is drained from the drainage port into the staying water in the concave portion. Its drainage In addition, the hollow door body is folded into a recess in the floor surface on the downstream side of the water flow channel, thereby smoothly discharging the water at a predetermined water level secured on the floor surface on the upstream side of the water flow channel and normal water flow. To flow down.

In addition, the distorted S-shaped guide plate 73, the S-shaped guide plate 83, or the top portion of the hollow door bodies 72, 82, 92 that stand up are arranged below the water inlet 47 below the front panel 3 and below the drain port 48 below the rear panel 44. and by the bottom section is engaged by one of zigzag guide plate 93 having the above edge guide surface 93 _1, 93 ₂ which is substantially parallel, falling water flow that has flowed into the hollow door body erected the front of the hollow door erected By smoothly flowing down between the inlet of the pal and the outlet of the rear panel, the distance between the inlet and the outlet in the vertical direction is longer than the vertical distance between the inlet and the outlet. In addition to suppressing the sound of falling water flowing along the shape of each downstream and downstream water path, most of the falling sound of the flowing water generated in the hollow door body flows down the hollow door body. Is closed in a water flow path of the flow, hence, the diffusion is also suppressed to the hollow door outside of the generated drainage sound of the hollow door body falling water flow.

In addition, the S-shaped guide plate 83 or the descending guide surface whose top and bottom are substantially parallel to the lower portion of the water inlet 47 above the front panel 43 and the lower portion of the drain port 48 below the rear panel 44 of the standing hollow door bodies 82 and 92. 93 _1, 93 nearly triangular inversion member 85, 95 comprises a top surface ₈₅ 1, 95 ₁ in parallel, the S-shaped induction and its top surface ₈₅ 1, 95 ₁ and the central portion of the zigzag-shaped guide plate 93 having _two If the drainage port 48 is provided on the inner side of the rear panel 44 so as to secure water drainage channels 84 and 94 with appropriate intervals between the plate 83 or the center portion of the zigzag guide plate 93, a standing hollow The inflowing water smoothly flows into the door body, and after flowing smoothly along the water flow path longer than the vertical distance between the water inlet of the front panel and the drain outlet of the rear panel of the hollow door body, the rear panel By smoothly draining from the water outlet, the water falling sound generated by the falling water flow in the door body is suppressed, and the generated water falling sound is suppressed to be blocked in the standing upright hollow body, Drainage from the drain outlet of the rear panel of the door body that stands up is drained into a drainage sound suppression chamber secured by a drainage sound suppression cover or the like that is pivotably mounted on the outside of the rear panel of the standing hollow door body. As a result, the drainage sound generated by the drainage is blocked in the drainage sound suppression chamber, and its diffusion is suppressed.

In any of the above-described embodiments and modifications, the length of the water flow path in the standing hollow door body is the vertical distance between the water inlet of the front panel and the drain outlet of the rear panel of the standing hollow door body. Along with the flow path regulating member configured to be longer, the flowing water smoothly flows through the hollow door body, so that the falling sound generated by the flowing water flow in the hollow door body is appropriately suppressed. The falling sound generated by the falling water flow is blocked in the hollow door body, and accordingly, the diffusion of the falling sound from the hollow door body is appropriately suppressed. Further, the downflow water flow regulating member has the required strength and rigidity in connection with the parallel front panel and the rear panel being connected to each other at the middle portion in the central portion of the door body. It can be expected to improve the freedom of designing and manufacturing the hollow door.

  It is a schematic plane explanatory drawing of the state which made the hollow door body of 1st Example of the falling sound suppression fall gate concerning this invention fall on the downstream floor surface of a flowing water channel.   It is a model longitudinal cross-section explanatory drawing of the state which made the hollow door body of the 1st Example of the falling sound suppression fall gate fall on the floor surface on the downstream side of a flowing water channel.   It is a model longitudinal cross-section explanatory drawing of the standing hollow door body.   Schematic of a state in which the hollow door body base of the second embodiment of the falling sound suppression overturning gate according to the present invention is attached to the base in the concave portion of the floor surface on the downstream side of the water channel so that the hollow door body is raised. FIG.   It is a vertical plane explanatory drawing of the state which made the hollow door body of the 3rd Example of the falling sound suppression fall gate concerning this invention lie down to the floor surface downstream of a flowing water channel.   It is a model longitudinal cross-section explanatory drawing of the fall state of the hollow door body of the 3rd Example.   It is a model longitudinal cross-section explanatory drawing of the standing state of the hollow door body of the 3rd Example.   Although the hollow door body base part of the fourth embodiment of the falling sound suppression overturning gate according to the present invention is attached to the base in the concave part of the floor surface on the downstream side of the water channel so as to be able to undulate, it is a schematic longitudinal sectional explanatory view in the standing state. .   It is a model longitudinal cross-section explanatory drawing of the standing state of the modification 3 of the hollow door body of the falling sound suppression fall gate concerning this device.   It is a model longitudinal cross-section explanatory drawing of the standing state of the modification 4 of the hollow door body of the falling sound suppression fall gate which concerns on this device.   It is a model longitudinal cross-section explanatory drawing of the standing state of the modification 5 of the hollow door body of the falling sound suppression fall gate which concerns on this device.

Explanation of symbols

5. Flow channel 6 ... Flow channel side wall 7 ... Upstream floor 8: Downstream floor 8A ... Small weir (downstream floor) 8B ... Concave (downstream floor)
9 …… Base 10 …… Falling sound suppression falling gate (Example 1)
10A: Falling water suppression overturning gate (Example 2) 12 ... Hollow door (rectangular)
12A …… Hollow door body (cuboid) (Example 2) 13 …… Front panel 14 …… Rear panel 15 …… Mounting shaft 16 …… Drive device (lower part of the hollow door body 12) 17D …… Screen (net shape)
18 …… Drain outlet 19 …… Watertight rubber 19 ₁ …… Watertight rubber 20 …… Top opening 20D …… Top chamber 21 …… Cover (of top opening 20)
21A: Top opening cover 21 (open) 22 ... Hinge 23 ... Partition (flow path regulating member) 23A ... Concave arc discharge part (partition 23)
23AA …… Center of arc of concave arc discharge portion 23A 24 …… Deficient portion (at top of partition wall 23)
25 …… Inclined introduction wall 26 …… Waterfall path (inside the hollow door 12)
27 …… Drainage sound suppression cover 27A …… Drainage sound suppression cover 27B …… Drainage sound suppression cover (folded state) 28 …… Hinge 29 …… Predetermined water level (H + ΔH ₁ ) 30, 30A …… Downstream water surface 31 …… Partition (Connected) Wall 33 …… Drainage sound suppression chamber 36 …… Water flow, water pressure direction (upstream side of flow channel 5) 40 …… Waterfall noise suppression overturn gate (Example 3)
40A .... Falling water suppression falling gate (Example 4)
42 ...... Hollow door (rectangular) (second embodiment) 43 …… Front panel (hollow door 42)
44 …… Rear panel (hollow door body 42) 46 …… Water passage (inside the hollow door body 42)
47 …… Water inlet 47D …… Screen 48 …… Drain outlet 50 …… Top opening 50D …… Top chamber 51 …… Top opening cover 51A …… Top opening cover (open state) 52 …… Hinges (top opening cover 51) )
53 …… Inclined partition wall 53A …… Depressed arc-shaped lead-out portion 56 …… Waterfall path (inside the hollow door body 42) 60 …… Partition wall 61 …… Fork-shaped screen 61D …… Screen 62 …… Reversing plate (channel regulating member) 63 …… Notch (reversed plate end)
64 ...... Drain plate 70, 80, 90 ... Falling water suppression overturn gate (Modifications 3 to 5)
72, 82, 92 ... Hollow door (rectangular) (Modifications 3 to 5)
73 …… Strained S-shaped guide plate (flow path regulating member) 74, 84, 94... Falling channel 76, 86, 96.
85, 95... Triangular prism reversal body (flow path regulating member) 85 ₁ ...... Guiding surface (triangular prism reversal body 85)
93 …… Zigzag guide plate (channel regulating member)
93 ₁ ...... Top guide surface (zigzag guide plate 93)
93 ₂ ...... Lower guide surface (zigzag guide plate 93)
95 ₁ ...... Induction surface (triangular prism-shaped inverted body 95)
H: Minimum inflow water level (minimum water level secured by the standing hollow door)
ΔH: Height of water inlet 47 ha: Water level corresponding to back pressure by drainage sound suppression cover 27 hb ... Water level of accumulated water in recess 8B (hb ₁ + hb ₂ )
hb ₁ …… Water level corresponding to the back pressure due to accumulated water in the recess 8B hb ₂ …… Dropping water level of the drainage from the drain port 18

Claims (15)

Hollow doors with closed peripheral edges of front panels (13, 43) with water inlets (17, 47) and rear panels (17, 47) with water outlets (18, 48) arranged in parallel at appropriate intervals The water inlet (17, 47) of the hollow door body standing between the water inlet (17, 47) and the water outlet (18, 48) of the body (12, 12A, 42, 42A, 72, 82, 92) A flow path regulating member (23, 62, 73, 83, 93) that configures a flowing water path for draining inflow water from the drain port (18, 48) longer than the vertical interval between the water inlet and the drain port. And the base of the hollow door body can be raised and lowered to the base (9) at the appropriate location via the mounting shaft (15) driven by the drive means (16) as appropriate. The front side of the front panel of the hollow door body and the water channel provided up and standing Upstream floor 5) (7) connected in a watertight rubber (19), the left and right side portions of the hollow door body, flowing water channel (5) side wall of the downstream (6) watertight rubber (19 ₁₎ to A falling sound suppression falling gate characterized by being closely slidable through the water.   Right and left side walls parallel to the hollow door body (12, 12A, 42, 42A, 72, 82, 92) configured in a rectangular parallelepiped shape are parallel to the downstream side wall of the water flow channel (5). The base part of the rectangular parallelepiped hollow door body is mounted on the base (9) at an appropriate position via the mounting shaft (15) so as to be displaceable upward. The falling gate for preventing falling water according to claim 1.   The drainage port (18, 48) is provided in a lower half portion of a rear panel (14, 44) of the rectangular parallelepiped hollow door body (12, 12A, 42, 42A, 72, 82, 92) that stands. The falling sound suppression overturning gate according to claim 1 or 2.   The base of the rectangular parallelepiped hollow door body (12, 12A, 42, 42A, 72, 82, 92) that stands up is the lower floor surface (8) that is lower than the upstream floor surface (7) of the flow channel (5). 4. The falling sound suppression overturn according to claim 1, wherein the falling base is attached to a base (9) disposed in a recess (8 </ b> B) through the mounting shaft (15) so as to be able to undulate. 5. Gate.   The drain outlets (18, 48) of the rear panel of the rectangular parallelepiped hollow door body standing up are located on the floor surface (8) on the downstream side of the water flow channel and on the recess (8B) on the downstream side of the water flow channel. The falling sound suppression overturning gate according to claim 4, wherein the falling gate is arranged so as to be located in a space lower than a floor surface on the upstream side of the flow channel.   At least a part of the flow path regulating member (23, 83) provided between the front panel (13, 43) and the rear panel (14, 44) of the rectangular parallelepiped hollow door (12, 12A, 82), The falling sound suppression overturning gate according to any one of claims 1 to 5, wherein the falling gate is configured to be parallel to the front panel and the rear panel.   At least part of each of the flow path regulating members (23, 62, 73, 83, 93) provided between the front panel and the rear panel of the rectangular parallelepiped hollow door body is parallel to the front panel and the rear panel, or It is formed so that it may incline at a small angle with respect to the said front panel and a rear panel, or may follow any shape of the circular arc around the axial center (23AA) parallel to the said front panel and a rear panel. The falling sound suppression falling gate according to any one of 1 to 5.   The flow path regulating member in the rectangular parallelepiped hollow door is parallel to the front panel and rear panel of the rectangular parallelepiped hollow door, or is inclined at a small angle with respect to the front panel and rear panel, or parallel to the front panel and rear panel. The falling water suppression overturning gate according to claim 7, wherein the falling gate is configured so as to follow a shape in which any two or all of the arcs around the axis are combined.   The rear panel (14) of the rectangular parallelepiped hollow door body (12, 12A) having the base portion attached to the base (9) arranged at an appropriate position on the floor (8) on the downstream side of the flow channel (5). A drainage sound suppression cover (27) in which the drainage port (18) is hinged (28) to the outside of the rear panel (14) of the rectangular parallelepiped hollow door body (12) that stands up and to the outside of the rear panel (14). The falling sound suppression overturning gate according to claim 8, wherein the falling gate is provided in the rear panel (14) so as to be located in the drainage sound suppression chamber (33) surrounded by the water.   The top opening (20, 50) of the rectangular parallelepiped hollow door body has a top opening cover (21, 51) in which the base is hinged (22, 52) to the top of the front panel of the rectangular parallelepiped hollow door body. The top opening cover (21, 51) can be opened by the falling water flow in the cuboid-shaped hollow door that has fallen while being provided so as to be able to be closed by its own weight. The falling gate for falling water suppression according to any one of 9.   A hollow portion extending in the vertical direction of the cuboid hollow door body standing upright is divided into a front chamber and a rear chamber by a partition wall (23) extending in the vertical direction of the cuboid hollow door body and having a missing portion (24) at the top. In addition, the front chamber and the rear chamber communicate with each other by the missing portion (24), and the lower portion of the water inlet (17) of the front panel (13) of the rectangular parallelepiped hollow door (12, 12A), and the partition wall (23) The falling sound suppression overturning gate according to any one of claims 1 to 10, wherein the lower front side is connected by an inclined or concave arc-shaped introduction wall 25.   The drainage sound suppression chamber (33) includes a drainage sound suppression cover (28, 44) having a hinge (28) attached to the rear panel (14, 44) outside the rear panel (14, 44) of the rectangular hollow door body. 27), the side wall (6) on the downstream side of the water flow channel (5) in contact with the left and right side portions of the drainage sound suppression cover (27), and the downstream floor surface (8) of the water flow channel (5). ) And falling down due to the falling of the rectangular parallelepiped hollow door that stands up the drainage sound suppression cover (27) onto the flow channel (5) downstream floor (8). The falling water according to any one of claims 1 to 9, characterized in that it can be folded between the lower side of the rectangular parallelepiped hollow door body and the downstream floor surface (8) of the flow channel (5). Sound suppression fall gate.   The base of the upright rectangular parallelepiped hollow door (42A), the drain outlet at the lower part of the rear panel is located on the downstream floor (8) of the flow channel (5), and downstream of the flow channel (5) The rectangular parallelepiped hollow door that is mounted on the base (9) in the recess (8B) so as to be able to rise and fall and is located in a space lower than the upstream floor (7) on the side recess (8B). The lower edge of the drainage port (48) of the rear panel (44) of the body (42, 42A) and the lower part inside the front panel (43) are connected by the first descending drainage plate (64), and the drainage port below the rear panel (44) (48) The lower end of the front panel (43) descends toward the lower part of the front panel (43) from the upper side, and the missing end (63) is formed on the upper surface of the front drain plate (64) and the front panel (43). Reversing plate (62) that is moderately spaced from the lower inner surface of Wherein the girder, drainage noise suppression tipping gate according to any of claims 1 to 5, 7 9. A distorted S-shaped guide plate (73) and a S-shaped guide plate (83) are arranged below the water inlet at the top of the front panel of the rectangular parallelepiped hollow door body (72, 82, 92) and below the drain of the rear panel. Or a zigzag guide plate (93) having a descending guide surface (93 ₁ , 93 ₂ ) whose top and bottom are substantially parallel to each other. The falling gate for falling water suppression according to any one of the above. The lower part of the water inlet (47) provided in the upper part of the front panel of the rectangular parallelepiped hollow door body (82, 92) and the lower part of the water outlet (48) provided in the rear panel are arranged in the S-shaped guide plate (83). Alternatively, the zigzag guide plate (93) having a descending guide surface (93 ₁ , 93 ₂ ) whose top portion and bottom portion are substantially parallel is connected by a flow path regulating member made of a combination thereof, or the flow path regulating member A triangular prism-like inverted body (85, 95) having a top surface (85 ₁ , 95 ₁ ) substantially parallel to any central part, its top surface (85 ₁ , 95 ₁ ) and the S-shaped guide plate (83) Alternatively, on the inner side of the rear panel (44), a water passage (84, 94) with an appropriate interval between the zigzag guide plate (93) and one or both flow path regulating members (guide plates) may be secured. , Above the drain (48) Drainage noise suppression tipping gate of claim 14 wherein the digit.

Images