JP5661390B2 - Movable gate device - Google Patents

Description

  The present invention relates to a movable gate device.

  Conventionally, as a movable gate device, a door body (backflow prevention gate) that generates buoyancy in water is supported at the bottom of the water channel so that it can swing up and down with a hinge. Lodging (store). And at the time of backflow, there exists what prevents a backflow by making a door body stand up upwards automatically with a buoyancy (refer patent document 1).

  The movable gate device as described above prevents the inflow of running water during storm surges or floods by installing them at the entrances and exits of tide weirs, underground parking lots, underground shopping streets, etc. be able to.

Japanese Patent Laid-Open No. 10-252043

  However, the hinge-type buoyancy gate as in Patent Document 1 requires a storage space for a buoyancy body (such as air) in the door body because the door body also serves as a float. Therefore, if you try to increase the buoyancy, a vicious cycle occurs in which the door body becomes larger and heavier, and there is a lack of practicality in reliably raising the door body with only the buoyancy of the door body. There is.

  In addition, there is a problem in that the storage space becomes large because the storage length that is the same as the height of the door body is required at the time of lying down (not in use).

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a movable gate device in which the gate is reliably raised by running water during a storm surge or flooding and the storage space when not in use is small. Is.

  In order to solve the above problems, the present invention is a float installed in a flowing water channel having a bottom portion and both side portions and guided so as to move up and down in a substantially vertical direction following the water level, and a lower portion of the flowing water channel. The bottom part is pivotably connected, the top part is pivotally connected to the float, and at least one intermediate part is pivotally connected to rise upward as the float rises and to lower the float A link-type string member that is folded in the bottom direction along with the upstream surface of the link-type string member, the lower end is watertightly fixed to the bottom side, and the upper end is watertightly fixed to the float side. The movable gate device is characterized in that both end portions are made of flexible curtain plates that are in watertight contact with both side portions of the water flow channel.

  As in claim 2, guide grooves extending in the vertical direction are provided on both sides of the flow channel, and guide protrusions are provided on both sides of the float so as to be fitted in the guide groove so as to be vertically movable. It can be set as the structure currently provided.

  According to a third aspect of the present invention, the upper part of the link type stringer member is pivotally connected to the downstream side portion of the float, and is folded in the range of the position substantially directly below the float by directing the intermediate connection portion in the upstream direction. It can be set as the structure set so that it may be.

  According to a fourth aspect of the present invention, it is possible to adopt a configuration in which a pressure-supporting roller that contacts the downstream surface of the link type stringer member and supports the water pressure acting on the link type stringer member is provided.

  As in claim 5, a pit is formed at the bottom of the flow channel, and the upper surface plate of the float is set so as to be substantially flush with the bottom of the flow channel by closing the top opening of the pit when the bottom is lowered. The lower part of the link type stringer member is rotatably connected to the bottom part of the pit, and the link type stringer member is provided in a gap between the bottom surface of the float and the bottom part of the pit when the float is at the lowest position. The support arm of the support roller can be configured to be folded and attached to the side surface on the downstream side in the pit so as to be swingable up and down.

  According to a sixth aspect of the present invention, the flow channel can be configured to be an entrance / exit of a tide weir, an underground parking lot, an underground mall, and the like through which flowing water enters during a storm surge or flood.

  According to the present invention, the gate (door body) itself constitutes a lightweight framework only by the link type stringer member, and the thin and lightweight flexible curtain is provided along the upstream surface of the stringer member. Just place them. Therefore, the float has sufficient buoyancy, and when the storm surge or flood water enters, the curtain plate surely rises together with the link type string member only by the float buoyancy. The rising link type string members and curtains are held at the rising position while the water pressure is applied, so that it is possible to prevent the inflow of running water during storm surges and floods. become. When the water level becomes zero, the link type stringer member is automatically folded into, for example, two parts by the weight of the float, the curtain, etc., and the flexible curtain plate is similarly moved along the link type stringer member. It will be folded.

  Thus, since the link type string member and the flexible curtain plate can be folded, the storage length when not in use is reduced by about 30% compared to the hinge type gate. Becomes smaller.

  According to the second aspect, the float is guided so as to move up and down smoothly and accurately in a substantially vertical direction, and the link type string member and the curtain plate can be reliably raised and reliably folded. it can.

  According to the third aspect, the storage length in the upstream and downstream direction of the movable gate becomes more compact.

  According to claim 4, it is possible to prevent the link type stringer member from being bent by the water pressure by receiving and supporting the water pressure acting on the link type stringer member via the curtain plate by the supporting roller.

  According to the fifth aspect, the float, the stringer member, the bearing roller and the bearing arm are all stored in the pit, and the top plate of the float is connected to the bottom (floor surface) of the flowing water channel (entrance / exit). It will be almost flush. Therefore, when the flow channel is an entrance / exit of a tide weir, an underground parking lot, an underground mall, etc., it does not cause a traffic obstacle for cars and people.

  According to the sixth aspect, it is possible to prevent inflow of running water into a tide weir, an underground parking lot, an underground shopping area, etc. during a storm surge or flood.

It is the front view which looked at the movable gate apparatus of embodiment of this invention from the upstream. It is a top view of FIG. It is an expanded side sectional view of FIG. It is a side view of the link type stringer member which stood up. It is a side view of the link type stringer member folded. It is principal part plane sectional drawing which shows the relationship between a float, a guide roller, and a guide groove. It is principal part plane sectional drawing which shows the relationship between a curtain plate and a link-type stringer member. It is principal part plane sectional drawing which shows the relationship between a link type stringer member and a bearing roller.

  Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view of the movable gate device 1 viewed from the upstream side, and FIG. 2 is a plan view of FIG.

  In this embodiment, it is assumed that the movable gate device 1 is installed at the entrance and exit of a tide weir, an underground parking lot, an underground shopping street, and the like, assuming the flow channel 2. The flowing water channel 2 has a bottom portion 2a and both side portions 2b. For example, it is assumed that the lateral width is about 10 m and the depth is about 1.5 m. Of course, it can also be installed in a channel such as a river. In each figure, the arrow a is a water flow (water pressure) direction.

  A pit (recessed recess) 2c is formed on the bottom 2a of the water flow channel 2 over both side portions 2b. A drain pipe 14 for draining rainwater or the like accumulated in the pit 2c to the outside in the pit 2c. Is provided.

  Side plates 3 are attached to both side portions 2b located on both sides of the pit 2c. As shown in detail in FIGS. 6 to 8, the side plate 3 is provided with a pair of guide grooves 3 a extending in the vertical direction in pairs in the flowing water direction.

  As shown in FIGS. 1 and 2, a rectangular box-like float 4 that is slightly shorter than the lateral width of the flowing water channel 2 is provided, and the inside of the float 4 is a space for accommodating a buoyant body (air or the like). The upper surface of the float 4 is formed on an upper surface plate 4a that is wider than the upper opening of the pit 2c, and closes the upper opening of the pit 2c when it is at the lowest position in FIG. Is set to

  The bottom 2a of the water flow channel 2 serves as a floor surface of the entrance and entrance, and people and vehicles pass therethrough. Therefore, the top plate 4a of the float 4 is preferably made of a hard metal and subjected to anti-slip processing (for example, SUS check card plate). However, other parts are preferably made of aluminum or the like for weight reduction.

  As shown in FIG. 6, brackets 5 protruding in the upstream direction and the downstream direction are attached to both sides of the float 4. Each bracket 5 is provided with a guide roller (guide convex portion) 6 that is fitted in the guide groove 3a of the side plate 3 so as to be vertically movable in two steps in the vertical direction. Instead of the guide roller 6, a fixed guide convex portion may be used.

  The float 4 is guided by the guide roller 6 and the guide groove 3a so as to move up and down in a substantially vertical direction following the water level. As shown in FIG. 3, a stopper 7 is attached to the upper part of both side portions 2 b of the water flow channel 2 to prevent the guide roller 6 from coming off upward from the guide groove 3 a.

  As shown in FIG. 4, the link-type string member 8 is composed of two pieces, an upper link member 8A and a lower link member 8B. Each link member 8A, 8B is a rectangular cylindrical metal for weight reduction. It is made of pipe material.

  The lower part of the lower link member 8B is connected to the hinge fitting 9 of the bottom part 2d of the pit 2c so as to be rotatable in the upstream / downstream direction by the link pin 10, and the upper part of the upper link member 8A is the hinge on the downstream surface of the float 4 It is connected to the metal fitting 11 by a link pin 12 so as to be rotatable in the upstream and downstream directions.

  Further, the lower portion of the upper link member 8A and the upper portion of the lower link member 8B are connected to each other as an intermediate connecting portion so as to be rotatable in the vertical direction by a link pin 13. The intermediate connecting portion (link pin 13) between the upper link member 8A and the lower link member 8B is directed in the upstream direction, that is, in a state of being bent in a square shape in a side view. The link type string member 8 is not limited to two of the upper link member 8A and the lower link member 8B, and may be three or more.

  As shown in FIG. 4, the link type string member 8 rises upward as the float 4 rises, and as shown in FIG. 5, the pit 2 c at a position substantially directly below the float 4 as the float 4 descends. It will be folded in two.

  In the example of FIG. 2, the link type string member 8 has a total of 11 pieces, 2 subtotals along the side 2 b and 9 subtotals at 1 m intervals if the horizontal width of the flow channel 2 is about 10 m. And constitutes a lightweight framework.

  A thin and lightweight flexible curtain plate 15 is disposed along the upstream surface of each link type string member 8. The curtain plate 15 is a rubber sheet, a synthetic resin (for example, nylon) sheet, a metal (for example, aluminum alloy) sheet, or the like, and is selected and used in relation to water pressure resistance.

  The curtain plate 15 is set to have a shape larger than the width and depth of the flowing water channel 2, and as shown in FIG. 4, the lower end 15a is watertightly fixed to the bottom 2d of the pit 2c, and the upper end 15b is a hinge fitting on the float 4 side. 11 is watertightly fixed. Also, as shown in FIGS. 6 to 7, the sealing members 16 at both ends are in watertight contact with the side plates 3 on both side portions 2 b of the water flow channel 2.

  As shown in FIG. 5, when the float 4 is at the lowest position, the curtain plate 15 follows the fact that the link type string member 8 is folded in two in the pit 2c, and the bottom surface of the float 4 and the bottom of the pit 2c. It will be folded in two in the gap between 2d.

  As shown in FIG. 4, on the side surface of the lower link member 8 </ b> B of each link type stringer member 8, a support rib 8 a extending in the vertical direction is formed. Further, on the hinge metal fitting 20 on the side surface 2e on the downstream side in the pit 2c, the base portion of the supporting arm 19 that supports the supporting roller 18 at the tip portion is opposed to each supporting rib 8a by the hinge pin 21 in the vertical direction. It is connected to the pivotable.

  The support roller 18 comes into contact with the downstream surface of the support rib 8a of the lower link member 8B, and receives the water pressure acting on the link type string member 8 (8A, 8B). At the upper end of the support rib 8a, a stopper portion 8b is formed which is held against the support roller 18 so as to restrict the link type string member 8 from rising further. The hinge fitting 20 is provided with a stopper 20a that restricts the swinging of the support arm 19.

  If the movable gate device 1 is configured as described above, the gate (door body) itself constitutes a lightweight framework only by the link type string members 8 (8A, 8B), and is thin and lightweight and flexible. The curtain plate 15 is simply disposed along the upstream surface of the link type string member 8. Incidentally, if the width of the gate (door body) is about 10 m and the height is about 1.5 m, the gate (door body) of Patent Document 1 is about 6 tons, whereas the gate of this embodiment. The (door body) is about 3 tons, and the weight is halved.

  Therefore, the float 4 has a sufficient buoyancy, and the curtain plate 15 can be reliably raised together with the link type string member 8 only by the buoyancy of the float 4 when flowing water at the time of storm surge or flooding enters. The rising link type string member 8 and the curtain plate 15 are held at the rising position by the water pressure while the water pressure is acting from the water flow direction a, so that the flowing water at the time of storm surge and flooding enters. Can be prevented in advance.

  When the water level becomes zero, the link type string member 8 is automatically folded into two by the weight of the float 4 and the curtain plate 15 and the like, and the flexible curtain plate 15 is also converted into the link type string member 8. Will be folded along the same way.

  Thus, since the link type string member 8 and the flexible curtain plate 15 can be folded, the storage length when not in use is reduced by about 30% compared to the hinge type gate. Storage space is reduced.

  Further, since the guide rollers 6 of the float 4 are fitted in the guide grooves 3a on both sides of the water flow channel 2, the float 4 is guided so as to move up and down smoothly and accurately in a substantially vertical direction. The link type string member 8 and the curtain plate 15 can be reliably raised and folded reliably.

  Furthermore, since the link type stringer member 8 is set to be folded into two within the range of a position almost directly below the float 4, the storage length L in the upstream and downstream direction of the movable gate becomes more compact.

  Further, the hydraulic pressure acting on the link type string member 8 via the curtain plate 15 is received and supported by the supporting roller 18 so that the link type string member 8 can be prevented from being bent by the hydraulic pressure.

  Further, the float 4, the link type string member 8, the bearing roller 18 and the bearing arm 19 are all housed in the pit 2 c, and the upper surface plate 4 a of the float 4 is the bottom of the flow channel (entrance / exit) 2. It is substantially flush with 2a (floor surface). Therefore, when the flowing water channel 2 is an entrance / exit of a tide weir, an underground parking lot, an underground mall, etc., it does not become a traffic obstacle for cars and people.

  In this way, if the flow channel 2 is an entrance / exit of a tide weir, underground parking lot, underground mall, etc., where the flowing water enters during a storm surge or flood, the tide is flooded into the tide weir, underground parking lot, underground mall, etc. It becomes possible to prevent intrusion. The movable gate device 1 can also be used as a retractable tide plate at the entrance and exit of a ground floor such as a building or a retractable raised embankment of a river dike.

  In the above description, when the storm surge or flood water invades, the curtain plate 15 rises together with the link type string member 8 due to the buoyancy of the float 4, but when storm surge and flood are expected It is also possible to forcibly start up the curtain plate 15 together with the link type string member 8 in advance.

  For example, as shown in FIG. 1, rope-type winches 25 as indicated by two-dot chain lines are respectively installed on both sides 2 b of the flow channel 2, and the rope hooks of the winch 25 are attached to the float 4 in the downward movement position. Lock. Thereafter, when the rope is wound up by the winch 25, the float 4 moves upward, so that the curtain plate 15 is forcibly raised together with the link type string member 8.

DESCRIPTION OF SYMBOLS 1 Movable gate apparatus 2 Flow channel 2a Bottom 2b Both sides 2c Pit 3 Side plate 3a Guide groove 4 Float 6 Guide roller (guide convex part)
8 Link Type Girder Member 8A Upper Link Member 8B Lower Link Member 10, 12, 13 Link Pin 15 Curtain Plate 15a Lower End 15b Upper End 15c Both Ends 18 Supporting Roller 19 Supporting Arm

Claims (6)

A float installed in a flowing water channel having a bottom and both sides and guided to move up and down in a substantially vertical direction following the water level;
The lower part is pivotably connected to the bottom of the water channel, the upper part is pivotally connected to the float, and at least one of the intermediate parts is pivotally connected to rise upward as the float rises. A link type string member that is folded in the bottom direction as the float descends;
Located along the upstream surface of the link type stringer member, the lower end is watertightly fixed to the bottom side, the upper end is watertightly fixed to the float side, and both side ends are in watertight contact with both sides of the water channel. A movable gate device comprising a flexible curtain.   Guide grooves extending in the vertical direction are provided on both sides of the flow channel, and guide protrusions are provided on both sides of the float so as to be movably fitted in the guide grooves. The movable gate device according to claim 1.   The upper part of the link-type stringer member is pivotally connected to the downstream side portion of the float, and is set so as to be folded in a range of a position substantially directly below the float by directing the intermediate connecting portion in the upstream direction. The movable gate device according to claim 1, wherein the movable gate device is provided.   The bearing roller which contacts the downstream surface of the link type stringer member and supports the water pressure acting on the link type stringer member is provided. The movable gate device according to item. A pit is formed at the bottom of the water flow channel, and the top plate of the float is set so as to be substantially flush with the bottom of the water flow channel, closing the top opening of the pit at the time of the lowest descent.
The lower part of the link type stringer member is rotatably connected to the bottom part of the pit, and the link type stringer member is folded into a gap between the bottom surface of the float and the bottom part of the pit when the float is at the lowest position. Set to
5. The movable gate device according to claim 4 , wherein the support arm of the support roller is attached to a side surface on the downstream side in the pit so as to be swingable up and down.   The movable gate device according to any one of claims 1 to 5, wherein the flowing water channel is an entrance / exit of a tide weir, an underground parking lot, an underground shopping area, or the like through which flowing water enters during a storm surge or a flood.

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