JP2002115240A - Intake gate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate setting of an intake gate in an existing intake dam while minimizing installation costs thereof. SOLUTION: The intake gate 21 of the intake dam is set as follows. The intake dam includes a dam body 22, and an external cylinder 21a and an internal cylinder 21b disposed inside the external cylinder 21a are arranged on an impounding side of the dam body 22. Then, the internal cylinder 21b is rotated with respect to the external cylinder 21a, and therefore an opening 47 of the external cylinder 21a matches with an intake hole 50 of the internal cylinder 21b, to thereby open the intake gate 21. The intake gate 21 is formed of an intake unit 27 and a connecting unit 26 which are connected together. The intake unit 27 has an external cylinder section 41 having the opening 47 and an internal cylinder section 42 having the intake hole 50, and the latter is arranged inside the former. The connecting unit 26 has a connecting external cylinder 24 and connecting internal cylinder 25 which are connectable to the external and internal cylinder sections 41 and 42 of the intake unit 27, respectively. The thus formed intake gate 21 is arranged on the impounding side of the intake dam.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water intake gate provided in a water intake dam for taking water from the water intake dam.

[0002]

2. Description of the Related Art Conventionally, an intake dam for storing water such as tap water and agricultural water is provided with an intake gate for taking the water. As an intake dam having this intake gate, a dam having a multi-tube intake gate or a perforated intake gate is known. Here, an intake dam having these multi-tube intake gates or perforated intake gates will be described.

FIG. 26 and FIG. 27 show an intake dam having a multi-tube intake gate. In this water intake dam, a plurality of water intake pipes 2 are buried in the embankment body 1, and the openings of the intake water pipes 2 are arranged on the water storage side wall of the embankment body 1 so as to be shifted vertically. I have. A valve chamber 3 is formed at the bottom of the embankment body 1, and an intake pipe 2 is passed through the valve chamber 3. And this valve chamber 3
Each of the intake pipes 2 is provided with a valve 4, and the valves 4 open and close the intake pipe 2. Another intake pipe 2 is connected to the bottom intake pipe 2, and the water taken in is flowed downstream through the bottom intake pipe 2. Reference numeral 5 denotes a screen for preventing foreign matter such as dust in the stored water from flowing into the water intake pipe 2.

FIGS. 28 and 29 show an intake dam having a porous intake gate. This water intake dam is provided with a water intake gate 12 formed in a semi-cylindrical shape on the water storage side wall surface of the bank body 11.
As a result, the water intake channel 1
3 are formed. Further, an intake pipe 14 arranged at the bottom of the bank body 11 is connected to the intake flow path 13, and water in the intake flow path 13 is guided to the downstream side by the intake pipe 14. ing. The intake gate portion 12 forming the intake flow path 13 has an intake hole 15 formed at a position deviated in the vertical direction on the peripheral surface thereof.
A gate 16 for opening and closing the water intake hole 15 is provided on the front side of. A spindle or a wire 17 is connected to each of the gates 16. The spindle or the wire 17 is suspended from an opening / closing device (not shown) in an operation room 18 provided at a top end of the bank body 11.

When the spindle or the wire 17 is pulled up by the opening / closing device, the gate 16 connected to the spindle or the wire 17 is moved upward, the water intake hole 15 is opened, and the water is stored in the water intake passage 1.
3 and is sent out downstream via an intake pipe 14. Reference numeral 19 denotes a screen for preventing dust or the like in the stored water from flowing into the water intake hole 15.

[0006] As described above, the intake dam is provided with a plurality of intake ports arranged vertically, and in particular, when water storage is used for agriculture, the intake dam is considered in consideration of the influence on agricultural crops. Intake relatively warm water on the side and open the lower intake as the water level decreases, or select and open the intake to prevent turbid water, or open the reservoir. The bottom intake was open due to emergency water level drop.

[0007]

By the way, in the multi-pipe intake gate, valves 4 for opening and closing the flow passages of the respective intake pipes 2 are required.
Has to be constructed in the bank body 1, which is extremely large-scale, and there is a problem that construction cost increases. In the case of a perforated intake gate, an intake gate 12 is constructed on the embankment body 11 itself,
It is necessary to form a water intake passage 13 for guiding water storage, and furthermore, a gate 16 is provided in each of the water intake holes 15 of the water intake gate portion 12, and an opening and closing mechanism such as an opening and closing device for opening and closing these gates 16 is required. There is also a problem that the equipment cost increases.

Since the intake gates are provided on the embankments 1 and 11 constituting the intake dam, it is necessary to construct the embankments 1 and 11 at the same time. is there. For this reason, there is a problem that the intake gate having the above structure cannot be provided in the existing intake dam.

The present invention has been made in view of the above circumstances, and has as its object to provide an intake gate that can be easily installed in an existing intake dam while reducing equipment costs.

[0010]

According to a first aspect of the present invention, there is provided a water intake gate, comprising: an outer cylinder having an opening; and an inner cylinder having an intake hole disposed inside the outer cylinder. Is installed on the water storage side of the dam body of the intake dam, and the inner cylinder is relatively moved with respect to the outer cylinder, so that the water intake comprises an opening of the outer cylinder and a water intake hole of the inner cylinder. An intake gate having an opening / closing opening for opening / closing of stored water, the intake gate comprising an outer cylindrical portion having the opening formed therein and an inner cylindrical portion having the intake hole provided in the outer cylindrical portion. And a connecting unit having a connecting outer tube and a connecting inner tube connectable to an outer tube portion and an inner tube portion of the water intake unit, respectively. The water intake unit and the connection unit are connected to each other to form the water intake dam. Is located on the water storage side of There.

As described above, the water intake unit in which the inner cylindrical portion having the water intake hole is provided in the outer cylindrical portion in which the opening is formed, and the connecting unit in which the connecting inner cylinder is passed through the connecting outer cylinder. Are connected to each other, so that installation can be facilitated. In other words, the conventional multi-pipe intake gate, which requires the valve chamber to be constructed on the embankment because a valve is required, or the conventional perforated gate, which requires the construction of an intake gate section on the embankment itself to form an intake flow path Compared to a water intake gate, it can be easily installed not only on a new intake dam but also on an existing intake dam, and the number of intake units can be easily connected according to the height of the embankment etc. It can be modified and adapted to any intake dam. Further, since the water intake hole is opened and closed by relatively moving the water intake hole of the inner cylindrical portion with respect to the opening of the outer cylindrical portion, a plurality of valves may be provided for each flow path, or each of the water intake holes may be provided. It is not necessary to provide a gate to be moved by the opening / closing mechanism for each, so that the equipment cost can be significantly reduced.

According to a second aspect of the present invention, in the intake gate according to the first aspect, the inner cylinder is rotated relative to the outer cylinder so that the opening and the intake hole are separated from each other. The opening and closing of the intake is performed.

In other words, by rotating the inner cylinder relative to the outer cylinder, the intake opening formed by the opening of the outer cylinder and the intake hole of the inner cylinder can be opened and closed very easily. Water from the reservoir.

According to a third aspect of the present invention, there is provided the intake gate according to the first or second aspect, wherein a flange is formed at an outer cylindrical portion of the intake unit and a coupling outer cylinder of the coupling unit at a coupling end of each other. It is characterized in that the water intake unit and the connection unit are connected by joining these flanges.

That is, by joining the flanges together, the connecting outer cylinder of the connecting unit and the outer cylindrical portion of the water intake unit can be connected very easily, and the installation work can be facilitated.

According to a fourth aspect of the present invention, in the intake gate according to the third aspect, one of the flanges joined to each other to connect the intake unit and the connection unit slides in the axial direction. It is characterized by being made possible.

That is, since one of the flanges joined to each other is slidable in the axial direction, an axial displacement at the joint between the outer cylinder portion of the water intake unit and the coupling outer cylinder of the coupling unit is allowed. Accordingly, at the time of installation, the connecting outer cylinder and the outer cylinder portion can be securely joined together, and can be easily removed.

The intake gate according to claim 5 is the same as that of claim 1.
5. The water intake gate according to any one of the items 4, wherein the outer cylindrical portion constituting the water intake unit has a half-split structure divided into two in the circumferential direction.

As described above, since the outer cylindrical portion constituting the water intake unit has a half-split structure divided into two in the circumferential direction, by removing one of the divided sides, maintenance work in the water intake unit can be performed. Can be performed very easily.

[0020] The intake gate according to the sixth aspect is the first aspect of the invention.
5. The intake gate according to any one of 5, wherein a screen for removing foreign matter in the stored water flowing into the opening is provided in the outer cylinder portion constituting the intake unit, and the opening is closed. A screen plate having a closing portion is provided, and the opening is covered by either the screen portion or the closing portion of the screen plate.

That is, by covering the opening of the outer cylinder with the screen of the screen plate, foreign substances of water taken from the reservoir through the opening can be removed by the screen of the screen. Further, by closing the opening with the closing portion, it is possible to reliably prevent the inflow of the stored water from the opening during maintenance of the inside of the water storage gate or the equipment downstream of the water storage gate.

According to a seventh aspect of the present invention, in the intake gate according to the sixth aspect, the screen plate is rotatably attached to an opening edge of the opening, and the screen plate is rotated. One of the screen portion and the closing portion is disposed at a position covering the opening.

That is, by rotating the screen plate, the screen portion or the closing portion of the screen plate can be very easily arranged in the opening.

The intake gate according to the present invention is constituted by an outer cylinder having an opening and an inner cylinder having an intake hole provided inside the outer cylinder. The intake gate is installed, and the inner cylinder is relatively rotated with respect to the outer cylinder, so that an intake port composed of the opening and the intake hole is opened and closed to perform intake and shutoff of stored water. A plurality of openings formed of long holes are formed in the outer cylinder along the longitudinal direction, and the inner cylinder is formed with a water intake hole formed in a spiral shape extending in the longitudinal direction, When the inner cylinder is rotated, an intake port including one of the openings of the outer cylinder and the intake hole is opened and closed.

As described above, by rotating the inner cylinder relative to the outer cylinder, the spirally formed water intake hole of the inner cylinder is formed by an elongated hole formed in the outer cylinder along the vertical direction. An intake port composed of these intake holes and any of the openings can be opened in accordance with any of the openings. In addition, by adjusting the rotation of the inner cylinder, the height of any one of the opening and the opening of the water intake can be easily adjusted, whereby the water can be stored more finely according to the purpose. Water can be taken from the required water level and sent out.

According to a ninth aspect of the present invention, there is provided an intake gate comprising an outer cylinder having an opening, and an inner cylinder having an intake hole disposed inside the outer cylinder. The water intake is installed, and the inner cylinder is relatively moved in the axial direction with respect to the outer cylinder, thereby opening and closing the water intake formed by the opening and the water intake hole, thereby performing intake and shutoff of the stored water. A gate, wherein a plurality of openings are formed in the outer cylinder at intervals in the longitudinal direction, and a plurality of water intake holes are formed in the inner cylinder at intervals different from the intervals between the openings of the outer cylinder. Is formed, and the opening and closing of the water intake formed by the opening and the water intake hole is selectively performed by moving the inner cylinder in the axial direction with respect to the outer cylinder.

In other words, by moving the inner cylinder relative to the outer cylinder in the axial direction, one of the water intake holes of the inner cylinder can be very easily matched with one of the openings of the outer cylinder, and The water intake comprising the hole and the opening can be selectively opened and closed.

The intake gate according to the tenth aspect is the first aspect.
10. The intake gate according to any one of items 9 to 9, which is supported by the levee body by support mechanisms provided at a plurality of locations in a vertical direction, the support mechanism includes a support plate portion fixed to the levee body, It is characterized by comprising a fixing member fixed to the outer cylinder, and a connecting arm connecting the support plate and the fixing member.

As described above, by connecting the support plate portion fixed to the embankment and the fixing member fixed to the connecting outer cylinder by the connecting arm, the support plate can be extremely easily installed on the embankment. Work efficiency can be further improved.

The intake gate according to the eleventh aspect is the first aspect.
In the intake gate according to Item 0, both or one of a connection point between the fixing member and the connection arm and a connection point between the support plate portion and the connection arm are connected so as to be relatively displaceable in the vertical direction. It is characterized by having.

As described above, the connecting portion between the fixing member and the connecting arm and / or the connecting portion between the supporting plate portion and the connecting arm are connected so as to be vertically movable relative to each other. Absorbs expansion and contraction reliably,
The effect of the bending moment can be eliminated. As a result, problems caused by the action of the bending moment can be reliably prevented.

The intake gate according to the twelfth aspect is the first aspect.
12. The water intake gate according to any one of items 1 to 11, wherein the outer cylinder is divided into upper and lower parts, and an annular coupling cylinder that covers an outer periphery of the outer cylinder is slidably provided in an axial direction at the divided part. The portion connected by the cylindrical body is an expansion joint portion.

That is, since the outer cylinder is made expandable and contractable by the expansion joint portion, expansion and contraction due to heat can be reliably absorbed, and problems caused by expansion and contraction can be reliably prevented.

[0034]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of an intake gate according to the present invention will be described below with reference to the drawings. (First Embodiment) In FIG. 1 to FIG.
It is an intake gate. This intake gate 21 is provided with an outer cylinder 21a.
And an inner cylinder 21 rotatably provided in the outer cylinder 21a.
and is provided upright from the base portion 23 provided at the bottom of the bank 22 on the water storage side of the bank 22 and is provided along the vertical direction. This intake gate 21
It comprises a connecting unit 26 having a double structure in which a small-diameter connecting inner tube 25 is inserted into the connecting outer tube 24, and a water intake unit 27 provided between these connecting units 26.

The lower end of the intake gate 21 is provided only with a connecting outer tube 24. The lower end of the connecting outer tube 24 is connected to an intake pipe provided at the base 23 and the bottom of the bank 22. 28 and is connected to and communicated therewith. Further, a lowermost water intake pipe 29 that opens laterally is provided in the base part 23, and a gate 31 that opens and closes this opening is provided in the opening of the lowermost water intake pipe 29. The gate 31 has a machine room 3 provided at the top end of the bank 22.
2 is connected to a spindle or wire 34 suspended from a hoisting device 33 inside the hoisting device 3.
3, the gate 31 is moved up and down via a spindle or a wire 34, whereby the opening of the lower water intake pipe 29 is opened and closed.

Next, the structure of the water intake unit 27 will be described. As shown in FIGS. 4 and 5, the water intake unit 27 has an outer tube 41 and an inner tube 42 provided inside the outer tube 41. The outer cylinder portion 41 has flanges 43 at both ends thereof.
3, the flange 44 provided at the end of the connection unit 26 is abutted and connected to each other by bolts and nuts. Among the flanges 44 provided at the end of the connection unit 26, the flange 44a provided at the lower end side
Is composed of an annular flange portion 45 and a seal member 46 provided on the inner peripheral surface of the flange portion 45, and slides water-tightly and axially on the outer peripheral side of the connecting outer cylinder 24. It is a loose flange provided as possible.

An opening 47 is formed in the outer cylindrical portion 41, and an intake pipe portion 48 whose leading end is enlarged in diameter to form an intake port is connected to the opening 47. The outer cylinder 41 has an opening 47 to which an intake pipe 48 is connected,
It has a half-split structure consisting of a front outer tube 41a forming the front side of the outer tube 41 and a rear outer tube 41b forming the rear side of the outer tube 41. By fastening the connection pieces 40 provided on both sides of the rear outer cylinder portion 41b with bolts and nuts, the front outer cylinder portion 41a and the rear outer cylinder portion 41b are joined to each other to form a cylindrical outer cylinder portion. 41. In addition, a front outer cylinder part 41a is provided on the outer peripheral side of the water intake pipe part 48 at the upper, lower, left and right sides.
And a rib 49 fixed by welding is provided over
With these ribs 49, the water intake pipe part 48 is connected to the front outer cylinder part 41
a is securely fixed and supported.

A water intake hole 50 is formed in the inner cylinder portion 42. Between the inner cylinder portion 42 and the coupling inner cylinder 25, a joint 51 for coupling them is provided. This joint 51
Is composed of a female joint 52 fixed to the connection inner cylinder 25 side and a male joint 53 fixed to the inner cylinder portion 42 side.
By fitting the fitting convex portion 53a of the male joint 53 into the fitting concave portion 52a of the female joint 52, the female joint 52 and the male joint 53 are joined, and the connection inner cylinder 25 and the inner cylinder portion 42 are connected. They are joined together.

As shown in FIG. 6, on the inner peripheral surface of the outer cylinder 41, a plurality of inner cylinder guides 54 are provided at upper and lower positions at intervals in the circumferential direction. 5
4, the inner cylinder portion 42 is rotatably supported in the outer cylinder portion 41 at a position where the axes thereof coincide with each other. Also,
An annular seal member 55 is fixed to the inner peripheral surface of the outer cylindrical portion 42 so as to surround the opening 47, and the watertight convex portion 56 of the seal member 55 protruding toward the inner cylindrical portion 42 is fixed to the inner cylindrical portion. The outer peripheral surface of 42 is in contact with a watertight state.

Then, as shown in FIG. 7, when the water intake hole 50 of the inner cylinder part 42 is located at a position facing the opening part 47 of the outer cylinder part 41, the opening of the outer cylinder part 41 is The portion 47 and the water intake hole 50 of the inner cylinder portion 42 are in communication with each other, and as shown in FIGS. 8 and 9, the inner cylinder portion 42 is rotated so that the water intake hole 50 is opened by the opening of the outer cylinder portion 41. The opening 47 of the outer cylinder 41 is removed when it is removed from the position facing the portion 47.
The communication between the inner cylinder portion 42 and the water intake hole 50 is released, and the seal member 55 is brought into close contact with the outer peripheral surface of the inner cylinder portion 42 so that the outer cylinder portion 41 is closed.
The opening 47 is closed by the outer peripheral surface of the inner cylindrical portion 42.

The water intake pipe 4 provided in the outer cylinder 41
8 has a mounting flange 61 at its tip. The mounting flange 61 has a connecting piece 6 at its upper end.
2 and a screen plate 63 is connected to the connecting piece 62 as shown in FIGS. 10 and 11. The screen plate 63 is formed in a long shape, and a hole 64 communicating with the water intake pipe 48 is formed on one side, and a screen 65 having a plurality of slits is fixed to the hole 64. ing. The screen plate 63 has a screen portion 63a on one side where the screen 65 is provided, and a closing portion 63b on the other side.

A connection hole 66 is formed in the center of the screen plate 63, and the connection piece 62 is formed in the screen plate 6.
A connection hole 67 communicated with the third connection hole 66 is formed. The connecting pin 68 is inserted into the connecting holes 66 and 67 in a state where the connecting holes 66 and 67 communicate with each other. In other words, the screen plate 63 is rotatably connected to the connecting piece 62 by the connecting pin 68, whereby the screen plate 63 is rotated, so that the screen 63 a or the closing One of the portions 63b can be arranged alternatively.

That is, by disposing the screen portion 63a at the opening of the water intake pipe portion 48, the water intake pipe portion 48 is opened to the reservoir through the screen 65, and the opening portion of the water intake pipe portion 48 is closed. By disposing the 63b, the intake pipe section 48 is closed.

A plurality of fixing screw holes 71 are formed in the mounting flange 61 at intervals in the circumferential direction. On the other hand, the screen portion 63a and the closing portion 63b of the screen plate 63 are formed with bolt holes 72 that communicate with the fixing screw holes 71 of the mounting flange 61 when they are arranged at the opening of the water intake pipe portion 48. Have been. And the screen plate 6
In the state where the screen portion 63a or the closing portion 63b of No. 3 is arranged at the opening of the water pipe portion 48 and the bolt hole 72 is aligned with the fixing screw hole 71, a bolt (not shown) is passed through the bolt hole 72 for fixing. The screen plate 63 is fixed to the mounting flange 61 by being screwed into the screw hole 71.

The water intake gate 21 composed of the water intake unit 27 and the connecting unit 26 having the above-described structure is supported by the support mechanism 81 on the water storage side of the bank 22 at a plurality of vertical positions.

Next, the support mechanism 81 will be described. As shown in FIG. 12, the support mechanism 81 includes a support plate 83 fixed to the water storage side of the bank 22 by an anchor 82, a connection arm 84 connected to the support plate 83, and the intake gate 21. And a fixing member 85 fixed to the connecting outer cylinder 41 of the connecting unit 26 constituting the above.

The connecting arm 84 includes a pair of left and right connecting pipes 86 and a connecting pipe 87 for connecting the connecting pipes 86 to each other. A pair of upper and lower connection plates 88 is provided on the connection side of the connection pipe 86 with the support plate portion 83. When the support plate portion 83 is disposed between the connection plates 88, the connection plates 88 and support plate 83
A connecting pin 89 is inserted into a hole (not shown) formed in the supporting member 83, and a connecting pipe 86 is connected to the support plate 83 by the connecting pin 89. One connecting plate 90 is provided on the connecting side of the connecting arm 84 with the fixing member 85 of the connecting pipe 86.

The fixing member 85 is composed of a support fixing plate 91 fixed around the connection outer cylinder 24 constituting the connection unit 26.
A connection portion 92 connected to the fourth connection pipe 86 is provided. These connecting portions 92 are composed of a pair of upper and lower connecting plates 93. The connecting plates 93 of the connecting pipe 86 are arranged between the connecting plates 93, and the connecting plates 93 and 90 are connected to the connecting plates 92. A connecting pin 94 is inserted through the formed hole (not shown), and the fixing member 85 is connected to the connecting arm 84 by the connecting pin 94. Note that the connection plate 93 is fixed to a mounting plate 96 firmly fixed to the support fixing plate 91 by a reinforcing rib 95.

It is to be noted that the connecting plate 90 and the connecting plate 90 are connected between the supporting plate 83 and the connecting plates 88 above and below the supporting plate 83.
Clearances are provided between the upper and lower connection plates 93 so that the members connected to each other can be slightly displaced in the vertical direction at the connection points.

The water intake gate 21 is provided with stages 101 at a plurality of upper and lower positions including a lower part of the water intake unit 27. This stage 101 is a rear stage 1 fixed to an embankment body 22 by an anchor 82.
02, and a front stage 103 fixed to the connecting outer cylinder 24 of the connecting unit 26, and a fence 104 is erected around the front stage 103. Reference numeral 105
The stage 101 is connected to the bank 22 or the connecting unit 2
6 is a support member supported by the connection outer cylinder 24.

An elevating ladder 106 is provided between the upper and lower stages 101 so that the elevating ladder 106 can move between the upper and lower stages 101. An elevating ladder 106 is also provided between the uppermost stage 101 and the machine room 32 and between the lowermost stage 101 and the base unit 23 so as to be able to move back and forth. Note that reference numeral 107 denotes a lifting ladder 106.
It is a back basket provided in.

The intake gate 21 having the above structure has an upper end reaching the machine room 32. As shown in FIG. 13, a support flange 111 is provided on the outer periphery at the upper end of the inner cylinder 21b.
Is fixed, and the support flange 111 is placed on a support base 112 provided in the machine room 32 via a bearing 113, whereby the inner cylinder 21b is
2 rotatably supported. A gear 114 is fixed to the upper end of the inner cylinder 21b.

The machine room 32 is provided with a water intake gate opening / closing device 122 supported by a gantry 121. The intake gate opening / closing device 122 has a drive motor 123. When a drive current is supplied to the drive motor 123, the drive shaft 124 is driven through a speed reducer provided inside.
Is to be rotated. The drive shaft 124 is provided with a drive gear 125 meshing with a gear 114 fixed to the upper end of the inner cylinder 21 b of the water intake gate 21, whereby the drive shaft 124 is
As a result, the rotational force is transmitted to the inner cylinder 21b of the intake gate 21 via the drive gear 125 and the gear 114, and the inner cylinder 21b is rotated. Note that the intake gate opening / closing device 122 is provided with a manual drive handle 126. By rotating the manual drive handle 126, the inner cylinder 21b of the intake gate 21 can be manually rotated. It has become.

The outer cylinder 21 constituting the intake gate 21
The a is provided with an expansion joint 131 near its upper end. This expansion joint portion 131, as shown in FIG.
A connecting cylinder 132 is provided slidably in the axial direction and connected to the outer peripheral side of the divided portion of the upper and lower divided outer cylinders 21a. An O-ring 1 is provided between the connecting cylinder 132 and the outer cylinder 21a to seal between them.
33 are provided. In addition, this connecting cylinder 132 is
It is supported by a support member (not shown) so as not to move in the vertical direction.

In the intake gate 21 configured as described above, the intake hole 50 of the inner cylinder portion 42 constituting the inner cylinder 21b of the intake unit 27 is, as shown in FIG. From the first water intake hole 50A,
The second water intake hole 50B and the third water intake hole 50C are provided, and the openings 47 of the outer cylinder portion 41 constituting the outer cylinder 21a are, in order from the uppermost one, a first opening 47A and a second opening 47.
B, and a third opening 47C. The first water intake hole 50A and the first opening 47A constitute a first water intake, the second water intake 50B and the second opening 47B constitute a second water intake, and the third water intake 50C. And the third opening 47C constitute a third water intake. Also, the first
Water intake hole 50A, second water intake hole 50B, third water intake hole 50C
Are shifted from each other by 90 °. That is, when viewed from above, the second water intake hole 50A is
The water intake hole 50B is shifted 90 ° counterclockwise, and the third water intake hole 50C is moved 90 ° clockwise with respect to the first water intake hole 50A.
° has been staggered.

The basic state of the water intake gate 21 is such that the first water intake hole 50A is directed forward and communicates with the first opening 47A to open the first water intake port. That is, as shown in FIG. 15 (a), with the first intake port opened, the second intake port and the third intake port are each closed. When the inner cylinder 21b is rotated clockwise by 90 ° by the intake gate opening / closing device 122 from this basic state, the first intake port is closed and the second intake port 50B is closed as shown in FIG. The second opening 47B communicates with the second opening 47B to open the second water intake,
Further, the third water intake is kept closed.

In addition, from the basic state, the intake gate opening / closing device 1
When the inner cylinder 21b is rotated by 90 ° counterclockwise by means of 22, the first water intake is closed and the third water intake 50C and the third opening 47C are closed as shown in FIG. The third intake port is opened by being communicated, and the second intake port is kept closed. Furthermore, when the inner cylinder 21b is rotated 180 ° counterclockwise (or clockwise) by the intake gate opening / closing device 122 from the basic state,
As shown in FIG. 15D, a first intake, a second intake,
All of the third water intakes are closed.

As described above, the water intake gate 21 can be very easily turned up and down by rotating the inner cylinder 21b so that the first water intake hole 50A, the second water intake hole 50B, and the third water intake hole 50B are arranged vertically.
Any one of the water intake holes 50C can be selectively used as the first opening 47A,
The first opening is communicated with the second opening 47B and the third opening 47C.
The water intake, the second water intake, and the third water intake can be opened, or the first water intake, the second water intake, and the third water intake can be closed to prohibit water intake. And the first water intake hole 50A, the second water intake hole 50B of this water intake gate 21,
The inner cylinder 21 is inserted from any of the water intake holes 50 of the third water intake hole 50C.
The water taken in b is sent to an intake pipe 28 connected to the lower end of the intake gate 21, and is sent downstream through this intake pipe 28. That is, the water intake gate 21 can take out water from a required water level according to the purpose and feed it out by rotating the inner cylinder 21b.

According to the water intake gate 21, the water intake unit 27 in which the inner cylinder portion 42 in which the water intake hole 50 is formed is provided in the outer cylinder portion 41 in which the opening portion 47 is formed, and the connecting outer cylinder 24. Connection unit 2 in which connection inner cylinder 25 is passed
6 are connected to each other, so that installation can be facilitated. In other words, the conventional multi-pipe intake gate, which requires the valve chamber to be constructed on the embankment because a valve is required, or the conventional perforated gate, which requires the construction of an intake gate section on the embankment itself to form an intake flow path Compared to a water intake gate, it can be easily installed not only on a new intake dam but also on an existing intake dam, and the number of intake units 27 can be easily connected according to the height of the embankment etc. And can be adapted to any intake dam.

Since the water intake is opened and closed by rotating the water intake 50 of the inner cylinder 42 relative to the opening 47 of the outer cylinder 41, a plurality of valves are provided for each flow path. And it is not necessary to provide a gate to be moved by an opening / closing mechanism in each water intake hole, so that the equipment cost can be significantly reduced.

Furthermore, by connecting the flanges 43 and 44 to each other, the connecting outer tube 24 of the connecting unit 26 and the outer tube portion 41 of the water intake unit 27 can be connected very easily, thereby facilitating the installation work. Can be planned.
In addition, one flange 44a of the flanges 43 and 44 joined to each other is slidable in the axial direction, so that the joint portion between the outer cylinder portion 41 of the water intake unit 27 and the coupling outer cylinder 24 of the coupling unit 26 is formed. The displacement in the axial direction can be tolerated.
4 and the outer cylindrical portion 41 can be securely joined.

Further, the outer cylindrical portion 41 constituting the water intake unit 27 is divided into two in the circumferential direction,
a, since it has a half-split structure composed of the rear outer cylinder 41b, maintenance work inside the water intake unit 27 can be performed extremely easily by removing one of the divided front outer cylinders 41a. Note that one of the joining portions on both sides of the front outer tube portion 41a and the rear outer tube portion 41b is hinged, so that the front outer tube portion 41a is rotated at the hinge connection portion with respect to the rear outer tube portion 41b. It is also possible to adopt a structure that can be opened and closed by doing so, whereby the maintenance work can be further facilitated.

Further, by covering the opening portion 47 of the outer cylindrical portion 41 with the screen portion 63a of the screen plate 63, foreign matter of water taken from the reservoir through the opening portion 47 is removed by the screen 65 of the screen portion 63a. Can be. Further, by closing the opening 47 with the closing portion 63b, it is possible to reliably prevent the flow of the stored water from the opening 47 at the time of internal maintenance or the like. Further, by rotating the screen plate 63, the screen portion 63a or the closing portion 63b of the screen plate 63 can be disposed in the opening 47 very easily.

The support plate 83 fixed to the bank 22
And the fixing member 85 fixed to the connecting outer cylinder 41 by the connecting arm 84, it is possible to extremely easily install the embankment body 22 and further increase the efficiency of the installing operation. In addition, since the connecting part between the fixing member 85 and the connecting arm 84 and / or the connecting part between the supporting plate part 83 and the connecting arm 84 are connected so as to be relatively displaceable in the vertical direction, the water intake gate 21 is provided. Can reliably absorb the expansion and contraction caused by the heat and eliminate the action of the bending moment. As a result, problems caused by the action of the bending moment can be reliably prevented.

Further, since the outer cylinder 21a is made expandable and contractable by the expansion joint portion 131, expansion and contraction due to heat can be reliably absorbed, and problems due to expansion and contraction can be reliably prevented.

Next, another embodiment will be described. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. (Second Embodiment) In FIG. 16 to FIG.
1 is an intake gate. The water intake gate 141 includes an outer cylinder 141a and an inner cylinder 141b rotatably provided in the outer cylinder 141a. The intake gate 141 is provided on the water storage side of the bank 22 and at the bottom of the bank 22. And is provided along the up-down direction from the base portion 23 provided.
It is supported on the surface of the bank 22 on the water storage side by a support mechanism 81 provided between 1 a and the bank 22.

As shown in FIGS. 19 to 21, the outer cylinder 141
a has an opening 1 composed of a plurality of long holes that open to the water storage side.
42 are formed along the up-down direction. This outer cylinder 1
A water intake pipe 143 formed in a box shape is provided on the water storage side so as to surround the opening 142. At the opening end of the intake pipe section 143, a mounting flange 144 is formed.
4 has a screen plate 146 having a screen 145.
Are fastened and fixed by bolts. That is, the foreign matter of the water taken in from the reservoir through the opening 142 is removed by the screen 145 of the screen plate 146.

Further, the inner cylinder 141b has a water intake hole 147 formed in a helical shape of one rotation in the vertical direction.

According to the intake gate 141 having the above structure, the inner cylinder 141b has the intake gate opening / closing device 122 at the upper end.
, A part of the spiral water intake hole 147 formed in the inner cylinder 141b is
In this communication part, the water is taken into the inner cylinder 141b and then sent to the water intake pipe 28 connected to the lower end of the water intake gate 141. And is sent downstream. Here, the outer cylinder 141 of the intake gate 141 is used.
a formed in the first order from the top.
Opening 142A, second opening 142B, third opening 14
2C. Then, the first opening 142A and the water intake hole 147 constitute a first water intake, and the second opening 14
2B and the intake hole 147 constitute a second intake port,
The opening 142C and the water intake hole 147 constitute a third water intake.

That is, the intake gate 141 is connected to the inner cylinder 1
By rotating 41b, the first water intake is opened by connecting the water intake hole 147 to the first opening 142A, and the second water intake is opened by connecting the water intake hole 147 to the second opening 142B. And the third intake hole 147
The third water intake is opened by communicating with the opening 142C. Moreover, by adjusting the rotation of the inner cylinder 141b, the heights of the opening portions at the first, second and third water intakes can be easily adjusted, whereby the water can be stored more finely. Water can be taken from the required water level and sent out.

(Third Embodiment) In FIGS. 22 to 24, reference numeral 151 denotes an intake gate. The water intake gate 151 is composed of an outer cylinder 151a and an inner cylinder 151b that can be moved up and down in the outer cylinder 151a. The intake gate 151 is provided on the water storage side of the embankment body 22 and at the bottom of the embankment body 22. And is provided along the up-down direction from the base portion 23, and is supported on the water storage side surface of the bank 22 by a support mechanism 81 provided between the outer cylinder 151 a and the bank 22. .

The outer cylinder 151a is formed with openings 152 formed of a plurality of holes that are open to the water storage side at intervals in the vertical direction. The outer cylinder 151a is provided with a water intake pipe 153 formed in a tubular shape on the water storage side so as to surround the opening 152. A mounting flange 154 is formed at the opening end of the water intake pipe section 153, and a screen 155 is attached to the mounting flange 154.
Is fixedly fastened by bolts. That is, the foreign matter of the water taken in from the reservoir via the opening 152 is removed by the screen 155 of the screen plate 156.

Further, the inner cylinder 151a is formed with the same number of water intake holes 157 as the openings 152 of the outer cylinder 141a so as to be directed in the same direction at an interval in the vertical direction. here,
The interval between the water intake holes 157 is at least the opening 152.
The distance between the openings 152 is larger than the distance between them by the diameter of the opening 152. Thus, any one of the water intake holes 157 can communicate with the opening 152.

The intake gate 151 is connected to the inner cylinder 1 by an intake gate opening / closing device 122 provided at the upper end thereof.
51b is raised and lowered. In addition, as a mechanism for raising and lowering, a rack 161 is provided on the inner cylinder 151b, and a rack 16
1 and a pinion 162 meshing with the pinion 16 is provided.
In some cases, the inner cylinder 151b is raised and lowered by rotating the inner cylinder 151b.

The intake gate 151 configured as described above.
In, the water intake hole 157 formed in the inner cylinder 151b is
As shown in FIG. 25, the first water intake hole 157A, the second water intake hole 157B, and the third water intake hole 157C are arranged in order from the top one.
The openings 152 of the outer cylinder 151a are arranged in the order from the uppermost one to the first opening 152A and the second opening
2B and a third opening 152C. The first water intake hole 157A and the first opening 152A
An intake port is configured, and the second intake hole 157B and the second opening 1
52B constitutes a second water intake, and a third water intake 157.
C and a third opening 153C constitute a third water intake. In the water intake gate 151, a state where the first water intake hole is opened with the height position of the first water intake hole 157A aligned with the first opening 152A is a basic state.
That is, as shown in FIG. 25 (a), with the first intake port opened, the second intake port and the third intake port are each closed.

From this basic state, the intake gate opening / closing device 12
When the inner cylinder 151b is lifted up by the step 2 in FIG.
As shown in, the first intake is closed and the second
The water intake hole 157B coincides with the second opening 152B to open the second water intake, and the third water intake is kept closed. Furthermore, when the inner cylinder 151b is raised by the intake gate opening / closing device 122, as shown in FIG. 25C, when the first intake port and the second intake port are closed, the third intake port 157C is closed. In accordance with the third opening 152C, the third
An intake is opened.

Further, from the basic state, the intake gate opening / closing device 1
When the inner cylinder 151b is lowered by the rotation of FIG.
As shown in (d), all of the first intake, the second intake, and the third intake are closed.

As described above, the intake gate 151 can easily select one of the first intake port, the second intake port, and the third intake port arranged vertically by raising and lowering the inner cylinder 151b. The water intake can be stopped by closing the first water intake, the second water intake, and the third water intake.

The water taken into the inner cylinder 151b from one of the first, second, and third water intake ports of the water intake gate 151 is supplied to the water intake gate 151.
The water is fed into a water intake pipe 28 connected to the lower end of the water pipe, and is sent through the water intake pipe 28 to the downstream side. In other words, this water intake gate 151 can raise and lower the inner cylinder 151b to take in and discharge the stored water from a required water level according to the purpose.

[0080]

As described above, according to the intake gate of the present invention, the following effects can be obtained. According to the water intake gate of the first aspect, the water intake unit in which the inner cylinder portion having the water intake hole is provided in the outer cylinder portion in which the opening is formed, and the connection inner cylinder is passed through the connection outer cylinder. Since the connecting units are connected to each other, the installation can be facilitated. In other words, the conventional multi-pipe intake gate, which requires the valve chamber to be constructed on the embankment because a valve is required, or the conventional perforated gate, which requires the construction of an intake gate section on the embankment itself to form an intake flow path Compared to the type intake gate, it can be easily installed not only on the new intake dam but also on the existing intake dam.
The number of connected water intake units can be easily changed according to the height of the embankment, and can be adapted to any water intake dam. In addition, since the water intake hole formed of the opening and the water intake hole is opened and closed by relatively moving the water intake hole of the inner cylinder portion with respect to the opening of the outer cylinder portion, a plurality of valves are provided for each flow path. And it is not necessary to provide a gate that is moved by an opening / closing mechanism at each water intake port, so that the equipment cost can be significantly reduced.

According to the water intake gate of the present invention, by rotating the inner cylinder relative to the outer cylinder, the water intake formed by the opening of the outer cylinder and the water intake hole of the inner cylinder can be extremely easily formed. The mouth can be opened and closed, and water can be withdrawn from the reservoir as needed.

According to the intake gate of the third aspect, by joining the flanges, the connection outer cylinder of the connection unit and the outer cylinder of the intake unit can be extremely easily connected, and the installation work is easy. Can be achieved.

According to the intake gate of the present invention, one of the flanges joined to each other is slidable in the axial direction, so that the outer cylindrical portion of the intake unit and the connecting outer cylinder of the connecting unit are joined. It is possible to tolerate the axial displacement at the location, so that the connecting outer cylinder and the outer cylinder portion can be securely joined at the time of installation.

According to the water intake gate of the present invention, since the outer cylindrical portion constituting the water intake unit has a half-split structure divided into two in the circumferential direction, one of the split sides is removed. In addition, maintenance work in the water intake unit can be performed extremely easily.

According to the water intake gate of the sixth aspect, by covering the opening of the outer cylinder with the screen of the screen plate, foreign matter of water taken from the reservoir through the opening is screened by the screen of the screen. Can be removed. In addition, by closing the opening with the closing portion, it is possible to reliably prevent the inflow of water from the opening during maintenance of the inside or the like.

According to the water intake gate of the present invention, by rotating the screen plate, the screen portion or the closing portion of the screen plate can be very easily arranged in the opening.

According to the water intake gate of the present invention, by rotating the inner cylinder relative to the outer cylinder, the spirally formed water intake hole of the inner cylinder extends vertically along the outer cylinder. The water intake formed by these water intake holes and any one of the openings can be opened in accordance with any one of the openings formed by the elongated holes. In addition, by adjusting the rotation of the inner cylinder, the height of any one of the opening and the opening of the water intake can be easily adjusted, whereby the water can be stored more finely according to the purpose. Water can be taken from the required water level and sent out.

According to the water intake gate of the ninth aspect, by moving the inner cylinder relative to the outer cylinder in the axial direction, one of the water intake holes of the inner cylinder can be very easily opened. It is possible to selectively open and close the water intake composed of these water intake holes and the opening by matching with any one of the parts.

According to the water intake gate of the tenth aspect, the support plate fixed to the embankment and the fixing member fixed to the connecting outer cylinder are connected by the connecting arm, so that the embankment can be extremely easily connected to the embankment. The installation can be performed, and the efficiency of the installation can be further improved.

According to the water intake gate of the eleventh aspect, at least one of the connecting point between the fixing member and the connecting arm and / or the connecting point between the supporting plate and the connecting arm is connected so as to be relatively movable vertically. As a result, expansion and contraction due to heat can be reliably absorbed, and the effect of bending moment can be eliminated. As a result, problems caused by the action of the bending moment can be reliably prevented.

According to the water intake gate of the twelfth aspect, since the outer cylinder is made expandable and contractable by the expansion joint portion, expansion and contraction due to heat is reliably absorbed, and problems caused by expansion and contraction are reliably prevented. be able to.

[Brief description of the drawings]

FIG. 1 is a front view of an intake dam provided with an intake gate for explaining a configuration and a structure of an intake gate according to a first embodiment of the present invention.

FIG. 2 is a side sectional view of an intake dam provided with an intake gate for explaining a configuration and a structure of the intake gate according to the first embodiment of the present invention.

FIG. 3 is a side sectional view of the intake gate illustrating a configuration and a structure of the intake gate according to the first embodiment of the present invention.

FIG. 4 is a side sectional view of a water intake unit of the water intake gate, illustrating a configuration and a structure of the water intake gate according to the first embodiment of the present invention.

FIG. 5 is a plan sectional view of a water intake unit of the water intake gate, illustrating a configuration and a structure of the water intake gate according to the first embodiment of the present invention.

FIG. 6 is a cross-sectional view of a part of a water intake unit of the water intake gate illustrating a configuration and a structure of the water intake gate according to the first embodiment of the present invention.

FIG. 7 is a schematic plan sectional view of a water intake unit of the water intake gate illustrating a configuration and a structure of a water intake gate according to the first embodiment of the present invention.

FIG. 8 is a schematic plan sectional view of a water intake unit of the water intake gate illustrating a configuration and a structure of the water intake gate according to the first embodiment of the present invention.

FIG. 9 is a schematic plan sectional view of a water intake unit of the water intake gate illustrating a configuration and a structure of the water intake gate according to the first embodiment of the present invention.

FIG. 10 is a side view of a part of the intake gate, which is a sectional view of an intake unit for explaining the configuration and structure of the intake gate according to the first embodiment of the present invention.

FIG. 11 is a front view of a part of the intake gate illustrating the configuration and structure of the intake gate according to the first embodiment of the present invention.

FIG. 12 is a schematic plan sectional view of a part of the intake gate illustrating the configuration and structure of the intake gate according to the first embodiment of the present invention.

FIG. 13 is a side cross-sectional view of the upper end portion of the intake gate for explaining the configuration and structure of the intake gate according to the first embodiment of the present invention.

FIG. 14 is a side sectional view of a part of an upper end portion of the intake gate for explaining a configuration and a structure of the intake gate according to the first embodiment of the present invention.

FIG. 15 is a schematic cross-sectional view of the intake gate illustrating the movement of the intake gate according to the first embodiment of the present invention.

FIG. 16 is a side sectional view of an intake dam provided with an intake gate for explaining a configuration and a structure of an intake gate according to a second embodiment of the present invention.

FIG. 17 is a plan cross-sectional view of an intake gate illustrating a configuration and a structure of an intake gate according to a second embodiment of the present invention.

FIG. 18 is a perspective view of a part of an intake gate illustrating a configuration and a structure of an intake gate according to a second embodiment of the present invention.

FIG. 19 is a schematic perspective view of an intake gate illustrating a configuration and a structure of an intake gate according to a second embodiment of the present invention.

FIG. 20 is a schematic perspective view of an outer cylinder constituting an intake gate for describing a configuration and a structure of an intake gate according to a second embodiment of the present invention.

FIG. 21 is a schematic perspective view of an inner cylinder constituting an intake gate for explaining a configuration and a structure of an intake gate according to a second embodiment of the present invention.

FIG. 22 is a side sectional view of an intake dam provided with an intake gate for explaining a configuration and a structure of an intake gate according to a third embodiment of the present invention.

FIG. 23 is a plan sectional view of an intake gate illustrating a configuration and a structure of an intake gate according to a third embodiment of the present invention.

FIG. 24 is a perspective view of a part of an intake gate for explaining a configuration and a structure of an intake gate according to a third embodiment of the present invention.

FIG. 25 is a schematic cross-sectional view of an intake gate for explaining the movement of the intake gate according to the third embodiment of the present invention.

FIG. 26 is a side sectional view of a water intake dam illustrating a conventional water intake dam having a multi-tube type water intake gate.

FIG. 27 is a plan view of a water intake dam illustrating a conventional water intake dam having a multitubular intake gate.

FIG. 28 is a side sectional view of a water intake dam illustrating a conventional water intake dam having a porous intake gate.

FIG. 29 is a front view of a water intake dam illustrating a conventional water intake dam having a porous water intake gate.

[Explanation of symbols]

 21, 141, 151 Intake gate 21a, 141a, 151a Outer cylinder 21b, 141b, 151b Inner cylinder 22 Embankment body 24 Connection outer cylinder 25 Connection inner cylinder 26 Connection unit 27 Water intake unit 41 Outer cylinder part 42 Inner cylinder part 43, 44 Flange 47, 142, 152 Opening parts 50, 147, 157 Water intake holes 63, 146, 156 Screen plate 63a Screen part 63b Closed part 65, 145, 155 Screen 81 Support mechanism 83 Support plate part 84 Connecting arm 85 Fixing member 131 Expansion joint part 132 connecting cylinder

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yukinori Kanoda 12th Nishikicho, Naka-ku, Yokohama-shi, Kanagawa Prefecture Mitsubishi Heavy Industries, Ltd. Yokohama Works F-term (reference) 2D019 AA01

Claims (12)

[Claims] 1. An outer cylinder having an opening, and an inner cylinder having an intake hole disposed inside the outer cylinder, the outer cylinder being installed on a water storage side of a dam body of an intake dam. A water intake gate in which the inner cylinder is relatively moved to open and close an intake port formed by an opening of the outer cylinder and an intake hole of the inner cylinder to perform intake and shutoff of stored water; A water intake unit comprising an outer cylindrical portion having a portion formed therein and an inner cylindrical portion having the water intake hole disposed in the outer cylindrical portion; and a connection outside which can be respectively connected to the outer cylindrical portion and the inner cylindrical portion of the water intake unit. An intake gate, comprising: a connecting unit having a tube and a connecting inner tube, wherein the water intake unit and the connecting unit are connected to each other and disposed on the water storage side of the water intake dam. 2. The intake port comprising the opening and the intake hole is opened and closed by rotating the inner cylinder relative to the outer cylinder. Intake gate as described. 3. The outer cylinder part of the water intake unit and the coupling outer cylinder of the coupling unit are provided with flanges at their coupling ends, and by joining these flanges,
The intake gate according to claim 1, wherein the intake unit and the connection unit are connected. 4. The water intake according to claim 3, wherein one of the flanges joined to each other to connect the water intake unit and the connection unit is slidable in the axial direction. Gate. 5. An outer cylinder part constituting the water intake unit,
The intake gate according to any one of claims 1 to 4, wherein the intake gate has a half-divided structure divided into two in a circumferential direction. 6. The outer cylindrical portion constituting the water intake unit, the opening portion has a screen portion provided with a screen for removing foreign matter in the stored water flowing therein, and a closing portion for closing the opening portion. The intake gate according to any one of claims 1 to 5, wherein a screen plate is provided, and the opening is covered by either the screen portion or the closing portion of the screen plate. 7. The screen plate is rotatably attached to an opening edge of the opening, and by rotating the screen plate, one of the screen portion and the closing portion is turned into the opening portion. The intake gate according to claim 6, wherein the intake gate is disposed at a position covering the intake gate. 8. An outer cylinder having an opening, and an inner cylinder having an intake hole disposed inside the outer cylinder, the outer cylinder being installed on a water storage side of a dam body of an intake dam, and The inner cylinder is relatively rotated to open and close an intake port formed by the opening and the intake hole to intake and shut off stored water. Has a plurality of openings formed of long holes formed along the longitudinal direction, the inner cylinder is formed with a water intake hole formed in a spiral shape extending in the longitudinal direction, and the inner cylinder is rotated. A water intake gate, characterized in that the water intake port comprising one of the openings of the outer cylinder and the water intake hole is opened and closed. 9. An outer cylinder having an opening, and an inner cylinder having an intake hole disposed inside the outer cylinder, the outer cylinder being installed on a water storage side of a dam body of an intake dam, and On the other hand, the inner cylinder is relatively moved in the axial direction, thereby opening and closing a water intake formed by the opening and the water intake hole, thereby performing intake / shutoff of stored water. A plurality of openings are formed in the tube at intervals in the longitudinal direction, and a plurality of water intake holes are formed in the inner tube at intervals different from the intervals between the openings of the outer tube. A water intake gate, characterized in that a water intake port comprising the opening and the water intake hole is selectively opened and closed by being moved in an axial direction with respect to the outer cylinder. 10. A support member provided at a plurality of positions in a vertical direction is supported by the bank, and the support mechanism includes a support plate fixed to the bank and a fixing member fixed to the outer cylinder. And a connecting arm for connecting the supporting plate portion and the fixing member.
10. The intake gate according to any one of claims 9 to 9. 11. A connecting portion between the fixing member and the connecting arm and / or a connecting portion between the supporting plate portion and the connecting arm are connected so as to be vertically displaceable relative to each other. The intake gate according to claim 10, characterized in that: 12. The outer cylinder is divided into upper and lower parts, and an annular connecting cylinder covering its outer periphery is slidably provided in the axial direction in the divided part, and a part connected by the connecting cylinder is provided. An expansion joint part, characterized by the above-mentioned.
12. The intake gate according to any one of 11 above.