JP4115380B2 - Peerless gate - Google Patents

Description

  The present invention relates to a peerless gate installed in a waterway such as a river or a culvert.

  Gates provided at the boundary between the sea and rivers or the boundary between the main river (also referred to as the outside water side) and the tributary (also referred to as the inland water side) usually use the water of the upstream tributary with a high water level downstream from the main river. However, it must be closed when the water level in the downstream main river rises due to, for example, a typhoon and so on (when the water level on the tributary side exceeds the specified level). Normally, the water level on the tributary side is higher than the water level on the main river side, and natural drainage is performed from the tributary side toward the main river side.

  On the other hand, when the water level on the main river side becomes higher than the water level on the tributary river side, the drainage gate is closed to prevent backflow. In the case of a so-called gate pump in which a submersible pump is incorporated in the gate, the gate is closed when there is a backflow, and the water is forcibly drained by a submersible pump provided at the gate. Conventionally, natural drainage is performed by opening the gate, and during reverse flow, forced drainage is performed with a submersible pump. Such gates are also installed in irrigation channels and culverts adjacent to residential areas.

  In response to opening and closing of the gate in such a water channel, the gate is provided with a device for blocking water in order to block water flow. Regardless of the presence or absence of this device, the gate installation part in the waterway has a stepped structure in order to enhance the blocking effect in the gate with the swinging shaft on the upper side. The gate is configured to abut (for example, Patent Document 1). In the case of a flat water channel bottom, for this reason, a step is provided on the bottom of the water channel, and the lower part of the gate is abutted against the step when closing. In addition, irrigation canals, etc., are small enough to block water flow, but weirs are also known that can be opened and closed with a simple dam plate at the bottom of a flat water channel so that the water flow can be adjusted. (For example, Patent Documents 2 and 3).

JP 2001-123434 A JP 2002-285529 A Japanese Utility Model Publication No. 62-154032.

  In the conventional gate that swings around the upper part of the water channel and opens and closes, there are river surface installation and river back installation depending on the installation location on the river bank. In general, this gate is rarely installed in the middle of a waterway, and is installed at an exit or the like. For example, when it is provided at the outlet of a culvert on the river surface side, the gate attached with watertight rubber is pressed against the metal fitting by positive water pressure to ensure watertightness. This watertightness extends over the four sides of the gate. In particular, in order to secure watertightness on the bottom side of the waterway, the bottom of the waterway has traditionally been stepped, or a weir is provided on the flat bottom of the waterway, and a gate is provided on this weir. As described above, the lower part of the butt is secured against water.

  Thus, a positive pressure acts in the case of river surface installation. In the case of riverside installation, positive pressure acts when the gate is installed on the outside water side, but reverse pressure acts when installed on the inside water side. Each of these configurations has the following problems. Specific problems will be described by taking a so-called gate pump in which a submersible pump is incorporated in the gate as an example. If a step is provided at the bottom of the water channel in an installation that receives positive pressure, the gate surface side of the step will be downstream, and the gate will be pressed against the door hardware by the water pressure, although it is somewhat affected by dust and sediment. There is an advantage of easy watertightness.

  However, the inspection pit of the pump attached to the gate is made higher than the external water level, and an operation room having a sealed structure and an inspection port lid sufficient for the pump pressure or the external water pressure are required, which increases the equipment cost. In particular, when installed in a culvert, an operation room having a sealed structure and an inspection lid are essential. On the other hand, when a step is provided at the bottom of the water channel in an installation that receives back pressure, the gate surface side of the step becomes the upstream side, and dust and deposits are likely to accumulate. This hinders positive closure of the gate and is harmful because it can cause blockage and breakage of the pump. However, since the gate is not directly exposed to the outside water, the state of the pump can be observed regardless of the state of the outside water level and also during the operation of the pump, which is advantageous in maintenance. Furthermore, the equipment required for positive pressure is not necessary.

  In a gate with a rotating shaft at the top, the gate is often tilted to some extent, but when the submersible pump is installed with the gate tilted greatly when the gate is closed, the minimum operating water level of the pump will rise and pump operation will not be possible. not good. In addition, when used in the backside of the river (back pressure), the gate bends due to the water pressure and the drainage pressure of the pump, and a gap is formed between the watertight device and the door hardware, and water leakage is likely to occur. Increasing the strength of the gate by increasing the thickness of the drive shaft to reduce the deflection increases the weight of the gate and increases the capacity of the drive device, which is uneconomical.

In addition, the drive device that opens and closes the gate is often installed above the waterway, but when installed in a residential area, etc., it must be configured with safety and landscape in mind, and should be located as low as possible. It is desirable to be installed in In any case, since a step at the bottom of the water channel has some influence on the gate closing function, it is desirable that the channel be flat.
In particular, in terms of blocking water, it must be configured to reliably block whether the pressure is positive or reverse when the gate is closed. The gate is desirably opened and closed automatically, and must have a compact configuration with a low height. The pump attached to the gate should be installed in a position and posture where operation is good. Furthermore, there is a demand for improvement of a gate facility that is easy to maintain with a low-cost simple configuration.

  The present invention has been developed based on the background described above, and achieves the following objects. An object of the present invention is to provide a peerless gate that can ensure watertightness when the gate is closed and can be installed on a flat water channel bottom having no step in the water flow direction of the water channel. Another object of the present invention is to provide a peerless gate in which the gate opening / closing drive device is arranged as low as possible to ensure the surrounding scenery and to consider environmental conservation and safety. Still another object of the present invention is to provide a peerless gate that can be lifted on a waterway and facilitated maintenance. Still another object of the present invention is to provide a peerless gate that is mounted on the gate so that the pump axis or suction port is substantially parallel to the bottom of the water channel when the gate is closed to improve pump operation. Still another object of the present invention is to provide a peerless gate having a simple structure and a low cost and economical structure.

  In order to solve the above problems, the following means are adopted. That is,

The peerless gate of the first aspect of the present invention is a gate facility in which the gate swings in a vertical direction to open and close a culvert entrance of a waterway.
It is a gate body that swings downward when closed and has a lower part on the bottom of a flat water channel that has no step in the water flow direction of the water channel, and swings and swings upward when opened.
The gate body,
A support provided outside the water channel and swingably supporting the gate body;
A shaft body provided above the water channel and provided integrally with the gate body, and having a rotation center axis parallel to the water channel bottom and spaced apart from the vertical position of the water channel bottom by a predetermined distance in the water flow direction from the lower installation position; ,
An opening / closing drive device provided on the support body for driving the shaft body to swing the gate body;
A watertight device that is provided at a peripheral edge of the gate body and elastically deforms and contacts the water channel wall including the water channel bottom to block the water flow ; and
The gate body has an inclination angle formed by a perpendicular line to the bottom of the water channel and a line connecting the rotation center of the shaft body and the lower part of the gate body,
The watertight device provided at the lower part of the gate body is characterized in that the gate body has a sliding margin that elastically deforms and slides a predetermined distance on the bottom of the water channel when the gate body is closed.

  The peerless gate of the present invention 2 is characterized in that, in the present invention 1, the gate body is configured such that the watertight device mounting surface is perpendicular to the water channel bottom.

  The peerless gate of the present invention 3 is characterized in that, in the present invention 1, the gate body is configured to have a submersible pump so that the axis is substantially parallel to the water channel bottom when closed.

  According to a fourth aspect of the present invention, there is provided a peerless gate according to the first aspect, wherein the gate body is provided with a submersible pump so that the suction port is substantially parallel to the bottom of the water channel when closed.

  The peerless gate of the present invention 5 is characterized in that, in the present invention 1, the gate body is installed at an inclination angle of 3 to 15 degrees with respect to a vertical surface of the water channel bottom when closed.

  A peerless gate according to a sixth aspect of the invention is characterized in that, in the first aspect of the invention, the opening / closing driving device is provided in a side chamber of the water channel and is arranged below the height of the shaft body.

  According to a seventh aspect of the present invention, there is provided the peerless gate according to the first aspect, wherein the opening / closing driving device is disposed at a substantially central portion of the width of the water channel.

Peerless gate of the present invention 8, in the present invention 1, wherein the watertight device is intended that the gate body when performing opening and closing of the water channel, having a pressing member for holding the rubber member constituting the watertight device The rubber body is elastically deformed and has a watertight structure that slides on the surface of the water channel wall parallel to the water flow direction of the water channel.

  The peerless type gate of the present invention secures a reliable watertight state by elastic deformation and gate arrangement when the gate is closed, and can be installed on a flat water channel bottom without a step in the water flow direction of the water channel. The equipment configuration of the gate can be simplified. When installing in a culvert that has various restrictions during installation, riverside installation (back pressure) is possible. By providing a gate opening and closing drive device outside the waterway and reducing its height, it has become an effective configuration for safety and landscape maintenance. Furthermore, since the gate body can be swung and lifted on the water channel when opened, maintenance is easy. Moreover, in the gate pump, the pump operation was improved by arranging the submersible pump axis or suction port of the gate body so as to be substantially parallel to the water channel bottom. In addition, the gate pump can be installed in the back of the river (back pressure), so that it has a sealed structure required for the pump pressure of the river surface installation (positive pressure), the back of the river (back pressure), and the external water pressure. There is an effect that the operation room and the inspection palate are not required and the civil engineering structure is simplified.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view showing an entire configuration of a peerless gate 1 of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a plan view thereof.
In this embodiment, a gate pump in which a submersible pump is incorporated in a gate will be described as an example with reference to the drawings.

  The water channel S has a substantially U-shape in which the water channel wall S1 is a concrete wall. The peerless type gate 1 is installed at the culvert entrance of the water channel S, but the main gate body 2 constituting the main structure is configured to block the water flow in the water channel S. The embodiment of the figure shows an example in the case of reverse pressure in a riverside installation. Normal water flows in the direction A to B (arrow direction indicated by the solid line) in the figure, and when the outside water flows backward, water flows in the direction indicated by the A direction (arrow direction indicated by the broken line) from B and water pressure is applied as a reverse pressure to the gate. .

  The submersible pump 3 is installed in the lower part 2a of the gate body 2 so that the water channel bottom S2 and the axis are substantially parallel to each other. When the outside water flows backward, the water flowing back by the submersible pump 3 flows in the direction A to B. Yes. A flap valve 4 (check valve) is attached to the discharge port side of the submersible pump 3, and the flap valve 4 swings up and down or horizontally. The flap valve 4 is opened when the flow is natural drainage or forced drainage, and is closed when the flow backflows from B to A to prevent backflow of drainage.

  The flap valve 4 constitutes a kind of lid, and when the submersible pump 3 is operated and water flows in the submersible pump 3 in the direction from A to B, the flap valve 4 is opened at the momentum of the water flow. When the water level on the B side becomes higher than the water level on the A side and the operation of the submersible pump 3 is stopped, the flap valve 4 is closed to close the discharge port of the submersible pump 3 and prevent backflow.

  Although the submersible pump 3 has been described as a horizontal axis submersible pump, it is not shown, but may be a vertical axis or inclined submersible pump. For example, in the case of the vertical shaft type, the suction port of the pump is as close as possible to the water channel bottom S2, and the suction port is installed in parallel to the water channel bottom S2. Since the channel bottom S2 is flat and has no steps, the suction port can be installed closer to the channel bottom S2.

  The water channel bottom S2 is flat and flat. A door fitting 5 for watertightness is provided on the water channel wall S1 and the water channel bottom S2 around the installation of the gate body 2. A watertight device 6 provided on the gate body 2 contacts when the gate is closed. On the other hand, the shaft body 7 is fixed to the upper part 2b of the gate body 2, the rotation center axis of the shaft body 7 is installed in a direction parallel to the water channel bottom S2 of the water channel S and across the water flow, and both end portions thereof are connected to the support body 9. The water channel wall S <b> 1 is supported via a bearing 8. When the shaft body 7 rotates, the gate body 2 is configured to swing. A support body 9 is provided at one end of the shaft body 7, and this support body 9 is attached to a concrete wall surface 10 outside the water channel.

  The portion of the concrete wall surface 10 constitutes a side chamber 11 surrounded by a concrete wall on four sides, and houses an opening / closing drive device 12 for rotating the shaft body 7. The gate body 2 is provided to be inclined with respect to the water channel wall S1 to which the door hardware 5 is attached. The two-dot chain line position in the figure shows a state in which the gate is opened and the gate body 2 is swung by the rotating motion of the shaft body 7 and lifted on the water surface. The center of rotation of the shaft body 7 is above the gate body 2 and is located above the vertical position of the lower part 2a of the gate body 2 at a position parallel to the water bottom S2 and spaced apart in the water flow direction. Is provided.

FIG. 4 shows another embodiment of a different form of the gate body. In this embodiment, it is the same that the lower part 13a of the gate body 13 is installed on the flat water channel bottom S2, but the configuration is different in that the gate main body 13 is installed perpendicular to the water channel bottom S2. However, even in this configuration, the rotation center of the shaft body 14 is parallel to the water channel bottom S2 and shifted in the water flow direction from the vertical plane with reference to the water channel bottom installation position of the lower portion 13a of the gate body 13 and upward. is set up.
The two-dot chain line position in the figure shows a state in which the gate is opened and the gate body 13 is swung up by the rotating motion of the shaft body 14 and lifted on the water surface. As shown in the figure, since it is completely lifted from the surface of the water, maintenance of the submersible pump 3 and the like can be performed very easily on the ground.

The opening / closing drive device 12 of the gate body 2 is housed in the side chamber 11 as a rotation drive device of the shaft body 7, and uses a hydraulic cylinder 15 in this embodiment. A stay 16 is fixed to the wall surface of the side chamber 11, and a hydraulic cylinder 15 main body is rotatably attached to a shaft supported by the stay 16. A link 17 is rotatably coupled to the rod 15a of the hydraulic cylinder 15 via a shaft. The link 17 is fixed to the shaft body 7.
With this configuration, when the hydraulic cylinder 15 is operated, the link 17 is rotated by the movement of the rod 15a and the shaft body 7 is rotated. Since the shaft body 7 is integrated with the gate body 2, the gate body 2 swings and opens and closes the gate as the shaft body 7 rotates. The hydraulic cylinder 15 is installed in the side chamber 11 at a position below the shaft body 7. Therefore, the opening / closing drive device 12 is installed within a height substantially the same as the height of the water channel. Therefore, when the upper portion of the side chamber 11 is covered with a cover, a gate equipment configuration having no overhang on the upper portion of the water channel is obtained. This configuration is a common configuration in the two embodiments described above.

  In the illustrated embodiment, the opening / closing drive device 12 is described as being provided at one end of the shaft body. However, although not shown, the opening / closing drive device 12 is provided at both ends of the shaft body. Also good. This configuration is suitable when a large rotational force is required for the gate opening / closing drive, and in this case, a balanced rotational force can be applied to the shaft body.

  Next, the detail of the structure which enabled the gate main body to be installed in the flat water channel bottom S2 is demonstrated. FIG. 5 schematically illustrates a position where the rotation center of the shaft 7 is displaced in the water flow direction when the lower portion 2a of the gate body 2 is installed on the water channel bottom S2, and illustrates the drag state of the lower portion of the gate body. . The intersection point where the perpendicular to the water channel bottom S2 intersects the water channel bottom S2 with respect to the rotation center a of the shaft body 7 is b, and the lower part 2a of the gate body is installed at the water channel bottom position d shifted by a distance c from the intersection b to the inward water side. Has been. This means that the position of the rotation center a of the shaft body 7 is offset with respect to the position of the lower part 2a of the gate body.

  An inclination angle formed between a perpendicular to the water channel bottom S2 and a line connecting the rotation center a of the shaft body 7 and the lower portion 2a of the gate body 2 is α. Further, the lower part 2a of the gate body 2 is provided with a watertight device 6, and a sliding allowance δ is provided between the lower part 2a and the water channel bottom S2 in order to ensure watertightness. This sliding allowance δ is a deformation allowance for elastic deformation of the watertight device 6. When the gate body 2 is installed in an offset state, the lower portion 2a of the gate body 2 rubs the water channel bottom S2 when the gate body 2 is closed, but the rubbing distance until the sliding margin δ is reached is e. . The state of the gate body 2 in the figure indicates the final installation position.

When it is assumed that the gate body 2 is installed perpendicularly to the water channel bottom S2 in the case where it is generally performed, that is, the installation position b of the lower portion 2a of the gate body 2 substantially coincides with the rotation center position in the perpendicular direction. In the case of the case, when compared with the same sliding allowance δ, the rubbing distance is f and f> e. Thus, separating the lower position d of the gate body 2 from the channel bottom S2 and the rotation center position a in the water flow direction with reference to the channel bottom vertical plane is effective in reducing the rubbing distance as described above. There is.
Assuming that the gate body 2 is installed with a certain degree of inclination with respect to the channel bottom S2, if the inclination angle α of the gate body 2 increases, the rubbing distance e naturally becomes smaller, and if the inclination angle α is smaller, the rubbing distance. e increases. If the inclination angle α is large, the influence of the weight of the gate body 2 itself cannot be ignored. That is, the change in the decrease of the rubbing distance e is smaller than the increase in the dead weight of the gate body 2 itself, and the effect of tilting the gate is lost, so the tilt angle α that is actually installed is limited. In the configuration of the present invention, a suitable angle for improving the watertight effect is 3 to 15 degrees.

  Next, the watertight device 6 will be described. FIG. 6 is a view showing a watertight structure of the upper part 2b and the lower part 2a when the gate body 2 is installed in an inclined state, and shows a rubber pressure bonding type. FIG. 7 is a view showing a watertight structure of the upper part 13b and the lower part 13a when the gate body 13 is installed vertically, and shows a rubber sliding type. In both cases, the rotation center position is shifted as described above. The rubber 18 of the watertight device 6 in FIG. 6 is of a block shape and the block itself is of a type that elastically deforms. For deformation, the rubber mounting member is provided with notches and guides to disperse the acting force so that the rubber 18 is not damaged.

  The door metal fitting 5 is embedded in the water channel bottom S2, and when the gate is closed, the rubber 18 is placed in a predetermined position while being rubbed against the door metal fitting 5. The watertight structure in this rubbing process follows the explanatory diagram of FIG. The watertight structure of the upper part 2b is a tube-type (or tube-shaped) rubber body 19. Since the door metal fitting 5 is installed on the water channel wall S1, the tube-type rubber body 19 is pressed by the door metal fitting 5 when the gate is closed, thereby forming a watertight state. The rubber body 19 of the upper part 2b may be a block type instead of a tube type.

  FIG. 7 shows an example in which a rubber rubber tube is applied to the lower portion 13 a of the gate body 13. In this system, if the sliding length of the door hardware and the watertight rubber is secured beyond the bending of the gate, there is no gap and no water leakage occurs. The rubber body 20 is attached to the gate body 13 by projecting the tube portion 20a along the water flow direction in parallel with the water channel bottom S2. This configuration can cope with a large sliding allowance δ in the rubbing process during closing. That is, the elastic deformation of the tube portion 20a itself is larger than that of the block shape, but there is room for the tube portion 20a itself to be bent during the rubbing process, so that the deformation allowance can be increased. The watertight structure of the upper part 13b is a structure in which the tubular rubber body 20 is pressed in the process of rubbing the door metal fitting 5 installed around the edge of the water channel wall S1 in the same manner as the lower part 13a.

  Similar to the lower configuration, the tube portion 20a is configured to project in the direction of water flow parallel to the water channel bottom S2. The tube portion 20a is slid in the water flow direction, and has a pressing plate 20b that holds the deformation of the rubber body 20 on the upper or side door metal fitting 5 which is the water channel wall S1, and is elastically deformed and crimped. . The tube-shaped rubber body 20 is formed into a tube shape so that it can be deformed into an appropriate shape even if an excessive force is applied. In the case of the present embodiment, the upper body 13b, the lower section 13a, and the side surface are made of the rubber body 20 having the same shape, and are configured to be crimped to the door hardware 5 by water pressure or the pressing force of the opening / closing drive device 12. Thus, since the water-tight rubber on the four sides has the same shape, even if the water-tight rubber is deformed, a continuous water-tight line is formed even in the corner portion, and a reliable water-tight configuration is obtained.

  In the case of river back installation (back pressure), a rubber sliding type as shown in FIG. 7 is also effective. That is, the four sides of the watertight rubber (upper and lower rubber bodies) attached to the gate have the same shape, and the watertight rubber is pressed against the door metal fitting 5 by water pressure in the vicinity of the fully closed position. With this structure, the watertight rubber may have any shape.

  FIG. 8 is a detailed view showing the configuration of the watertight rubber. The rubber body 20 is a tube type, and shows a state where the gate body 13 is closed and installed on the bottom S2 of the water channel by backside installation (back pressure) and is receiving reverse water pressure. The rubber body 20 is installed while rubbing the water channel bottom S2, but when the gate body 13 is closed, the rubber body 20 is elastically deformed by the dimension of X and is pressed against the water channel bottom S2. The water pressure is applied to the exposed rubber body 20 with uniform water pressure, but the rubber body 20 is pushed in the direction indicated by the arrow as a resultant force in vector. The rubber body 20 is fixed to the gate body 13 via a pressing plate 20b. The pressing plate 20b prevents the rubber body 20 from being bent more than necessary due to water pressure. The receiving surface of the pressing plate 20b forms a curve in accordance with the shape of the rubber body 20.

  FIG. 9 shows an example of the watertight structure of the upper part, and shows a state in which the rubber body 20 has come into contact with the door hardware just before the gate body 13 is closed. When the gate main body 13 is finally closed, the pressure bearing plate 13c provided on the upper portion of the gate main body 13 comes into contact with the door metal and the tube portion 20a of the rubber body 20 is elastically deformed and still enters and adheres to the door metal. The configuration of the pressing plate 20b of the rubber body 20 is the same as that of the rubber body 20 described in the case of the water channel bottom S2. In addition, the upper part of the door-to-door hardware is watertight rubber that can easily fit into the door-to-door hardware, and other structures that are easy to follow the movement of the gate (door-to-door rounding, door-to-door plate mounting, door-to-door chamfering, door-to-door accessories) Mounting).

  This configuration will be described in detail. FIG. 10 shows a structure of a door-to-door rounding type door-to-door hardware 30, in which the corners of the door-to-door hardware 30 are rounded and the rubber body 20 is smoothly elastic when the gate body 13 is closed. Close contact while deforming. Further, a support plate 13c corresponding to a stopper when the gate body 13 is closed is provided on the upper portion 13b of the gate body 13. The support plate 13c abuts the door metal 30 when the gate body 13 is closed.

  FIG. 11 shows a structure of a door-to-shelf mounting type door-to-door metal fitting 40, in which the door-to-door hardware 40 is formed in an L shape, and a structure in which a water-blocking side 40a is provided on a part of the water channel side. . The structure of the rubber body 20 is the same as in the case of FIG. 10, and when the gate body 13 is closed, the rubber body 20 comes into contact with and comes into close contact with the contact plate 40 a of the door bracket 40.

  FIG. 12 shows a configuration of a door cut corner chamfering type door cut hardware 50 in which the corner of the door cut hardware 50 is chamfered at an angle appropriate for watertightness (for example, 45 degrees). The structure of the rubber body 20 is the same as in the case of FIG.

  FIG. 13 shows a structure of a door-to-door accessory mounting type door-to-door hardware 60, in which a V-shaped hardware 60a is attached to a part of the door-to-door hardware 60 as an accessory. The structure of the rubber body 20 is the same as in the case of FIG. 10, and when the gate body 13 is closed, the rubber body 20 contacts and is in close contact with the lower part of the V-shaped hardware 60 a of the door metal 60.

  FIG. 14 is another example of the watertight device installed on the water channel bottom S2. The rubber body is a plate-like rubber body 21 projecting along the water flow direction of the water channel bottom S2. Like the rubber body 20 described above, it is elastically deformed and watertight. This configuration may be applied to the upper portion, and the configuration can also be applied to the above-described four types of door hardware.

Next, another embodiment regarding attachment of the opening / closing drive device will be described with reference to FIGS. 15 and 16. 15 is a plan view, and FIG. 16 is a side view. This embodiment is an example when the opening / closing drive device is installed at the center of the shaft body 7. This open / close drive device is configured as a hydraulic cylinder 15c as described above. A link 17a is fixed to the central portion of the shaft body 7, and a rod 15d of a hydraulic cylinder 15c is rotatably connected to the other end of the link 17a.
The hydraulic cylinder 15c is swingably attached to a stay 16a fixed to a part of the water channel wall above the water channel. The rod 15d moves forward and backward by the operation of the hydraulic cylinder 15c, and accordingly, the link 17a swings and the shaft body 7 rotates. As the shaft body 7 rotates, the gate body 2 swings up and down and opens and closes.

In this application example, when one or more (for example, two) submersible pumps 3 are mounted on the gate main body 2, if installed in the substantially central portion thereof, a balanced drive configuration is obtained. However, in this case, the height of the equipment is higher than that in the case where the driving device is provided at the shaft end of the shaft body 7, but a configuration that can be reduced as much as possible by designing the design is possible.
Further, in this application example, the gate is supported and driven at the substantially central portion of the drive shaft that opens and closes the gate, so that the gate deflection is smaller than the type that is supported and driven at the end of the drive shaft. Since it is difficult for gaps to occur between the hardware and the honey rubber, it is difficult for water leakage to occur, so the drive shaft diameter can be reduced, and an economical configuration is possible.

  As mentioned above, although two different gate main bodies were demonstrated about embodiment of this invention, it cannot be overemphasized that the object of this invention is not limited to this. Moreover, since there are various forms other than the description of the watertight configuration, the most suitable one may be used in accordance with the form of the water channel.

FIG. 1 is a front view of a peerless gate according to the present invention. FIG. 2 is a side view of the peerless gate of the present invention. FIG. 3 is a plan view of the peerless gate of the present invention. FIG. 4 is a side view of a peerless gate showing another embodiment of the present invention. FIG. 5 is an explanatory diagram showing the relationship between the installation position of the peerless gate on the water channel bottom and the rotation axis center position. FIG. 6 is a cross-sectional view showing a watertight configuration of the gate body installed at an inclination. FIG. 7 is a cross-sectional view showing a watertight configuration of a vertically installed gate body. FIG. 8 is a cross-sectional view showing details of the watertight configuration of the lower part of the gate body. FIG. 9 is a cross-sectional view showing details of the watertight configuration of the upper part of the gate body. FIG. 10 is a cross-sectional view showing a door-to-door angle rounding type in the structure of the door-to-door hardware on the upper side. FIG. 11 is a cross-sectional view showing a door-to-door plate mounting type with the structure of the door-to-door hardware on the upper side. FIG. 12 is a cross-sectional view showing a door corner chamfering type in the configuration of the door bracket hardware on the upper side. FIG. 13: is sectional drawing which shows the door attachment attachment attachment type | mold by the structure of the door hardware of an upper part. FIG. 14 is a cross-sectional view showing another embodiment of the watertight configuration of the lower part of the gate body. FIG. 15 is a plan view of a configuration in which a driving device is provided in the central portion of the shaft body. FIG. 16 is a side view of a configuration in which a driving device is provided at the center of the shaft body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Peerless type gate 2 ... Gate main body 3 ... Submersible pump 5 ... Door metal fitting 6 ... Watertight device 7 ... Shaft body 9 ... Support body 11 ... Side chamber 12 ... Opening / closing drive device

Claims (8)

In the gate facility where the gate swings up and down to open and close the culvert entrance of the waterway,
It is a gate body that swings downward when closed and has a lower part on the bottom of a flat water channel that has no step in the water flow direction of the water channel, and swings and swings upward when opened.
The gate body,
A support provided outside the water channel and swingably supporting the gate body;
A shaft body provided above the water channel and provided integrally with the gate body, and having a rotation center axis parallel to the water channel bottom and spaced apart from the vertical position of the water channel bottom by a predetermined distance in the water flow direction from the lower installation position; ,
An opening / closing drive device provided on the support body for driving the shaft body to swing the gate body;
A watertight device that is provided at a peripheral edge of the gate body and elastically deforms and contacts the water channel wall including the water channel bottom to block the water flow ; and
The gate body has an inclination angle formed by a perpendicular line to the bottom of the water channel and a line connecting the rotation center of the shaft body and the lower part of the gate body,
The watertight device provided at the lower portion of the gate body is configured to have a sliding margin that slides a predetermined distance by elastically deforming the bottom of the water channel when the gate body is closed. Gate. The peerless gate according to claim 1,
The gate body has a peerless gate characterized in that the watertight device mounting surface is perpendicular to the bottom of the water channel. The peerless gate according to claim 1,
2. The peerless gate according to claim 1, wherein the gate body is configured to have a submersible pump so that an axis is substantially parallel to the water channel bottom when closed. The peerless gate according to claim 1,
2. The peerless gate according to claim 1, wherein the gate body is configured to have a submersible pump so that the suction port is substantially parallel to the bottom of the water channel when closed. The peerless gate according to claim 1,
The gate body is installed at a tilt angle of 3 to 15 degrees with respect to a vertical plane of the water channel bottom when closed. The peerless gate according to claim 1,
The opening and closing drive device is provided in a side chamber of the water channel and is arranged and configured to be equal to or less than the height of the shaft body. The peerless gate according to claim 1,
2. The peerless gate according to claim 1, wherein the opening / closing driving device is disposed at a substantially central portion of the width of the water channel. The peerless gate according to claim 1,
The watertight device includes a pressing member that holds a rubber body constituting the watertight device when the gate body opens and closes the waterway, and the rubber body elastically deforms, A peerless gate characterized by having a watertight structure that slides on the surface of the water channel wall parallel to the water flow direction.

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