JP2001200524A - Gate apparatus for water way - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gate apparatus for a water way, which is proof against peeling of a paint of a gate main body, and has a simple water-sealing structure for preventing inverse bend of a packing. SOLUTION: The gate apparatus is provided with a holding member 1 arranged in the water way 23 in a frontage direction, a gate main body 2 having its base-side end connected to the holding member 1 and being upward/ downward rotatable, and the packing 3 arranged between the holding member 1 and the base-side end of the gate main body 2 in an elastically deforming manner so as to form an upward projection when the gate main body 2 is erected, to thereby seal water flowing between the water way 23 and a downstream location thereof. Further, the gate apparatus is provided with a backing plate 4 on a lower side of the packing 3, for elastically deforming almost along with the deformation of the packing 3, to thereby restrain the packing 3 from downward-projectively deforming.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterway gate device for preventing backflow or storing water in, for example, an agricultural waterway or a gutter or a gutter pipe, and more particularly to a water sealing structure for a base end portion of a gate body. Regarding improvement.

[0002]

2. Description of the Related Art A water gate device for a water gate provided in a drain gutter or a gutter pipe is a float in which a gate body for adjusting a water level is arranged in the water channel, and a lower end of the gate body is rotatable vertically by a hinge. It is a formula. In this waterway gate device, the channel to the waterway can be opened and closed by using the buoyant force applied to the gate body caused by the water level difference between the waterway side and the river side to perform a tilting operation around the hinge. . In addition, the gate device for storing water is almost the same, and has a structure in which the waterway is opened and closed by rotating the gate body by a hoisting machine installed on the roof of the waterway.

FIG. 5 is a schematic diagram of a waterway gate device.
As shown in the figure, a gate body 53 is connected to a holding member 52 provided on a bottom plate 51 on the water channel side so as to be able to rotate up and down. The gate body 53 has a lower end connected to the holding member 52 by a hinge mechanism, and an upper end formed as a hollow float. In such a waterway gate device, the gate main body 53 rotates by the water level difference between the upstream water level on the waterway side and the downstream water level on the river side, and the discharge of water from the waterway side and the reverse flow of water from the river side occur. Can be prevented.

[0004] In order to stop the water from flowing through the gate body 53, packings (not shown) are provided at both ends in the width direction of the gate body 53 so as to come into contact with a side panel (not shown) of the water channel. In addition, it is necessary to stop water between the bottom plate 51 and the holding member 52,
Conventionally, a water stop structure as shown in FIG. 6 is employed.

[0005] As shown in FIG.
Is a stay 52a made of H-shaped steel and integrated with a face plate 52b on the front side facing the river, and has a length corresponding to the total length in the width direction of the water channel. The face plate 52b is provided with a bracket 52c, and the base end of the gate body 53 is connected to the bracket 52c via a hinge pin 52d. The waterway and holding member 52 and the gate body 5
The packing 54 for water sealing with the base end of the
a and the back surface of the gate body 53. The packing 54 has substantially the same length as the width of the gate body 53, and comes into contact with the side panel of the water channel to seal water including the side panel.

Since the gate main body 53 moves up and down, the packing 54 extends when the gate main body 53 falls down substantially horizontally, and becomes almost tensioned. When the gate main body 53 stands up, as shown in FIG. It bends and deforms. Since the packing 54 is repeatedly deformed in this manner, the packing 54 may bite into the gap between the corner at the upper end of the holding member 52 and the lower end of the gate body 53 due to the water pressure or the earth pressure of the sediment. When the main body 54 falls down substantially horizontally, the weight of the sediment deposited on the packing 54 causes the packing 54 to be bent backwards downward, and the bite is easily generated when the gate main body 54 rises. When the biting of the packing 54 is repeated, the packing 5
4 is torn and loses the water sealing function.

Therefore, conventionally, in order to prevent the packing 54 from biting, a guard piece 55 is provided below the packing 54.
The configuration provided with was adopted. As shown in FIG. 6B, the guard piece 55 is attached to the upper end of the face plate 52b of the holding member 52 via a hinge 55a, and has a slide section 55b having a circular cross section at the upper end. . By providing such a guard piece 55, the packing 54 can be prevented from being bent backward and bent downward, and the trapping between the gate body 53 and the holding member 52 is also eliminated.

The above-described connection of the gate main body 53 to the holding member 52 and the water stopping structure by the packing 54 are the same in the gate device for storing water.

[0009]

However, the guard piece 5
Since 5 is connected to the holding member 52 by the hinge 55a, the movement resistance is likely to be increased due to rust generation or foreign matter biting. On the other hand, the sliding portion 55b
Always hits the back surface of the gate body 53. Therefore, if the resistance of the movement of the hinge 55a is large, the gate body 53 may also be operated in the rising direction, and may not be operated quickly. Further, since the sliding portion 55b slides on the back surface of the gate main body 53, the coating of the gate main body 53 is easily peeled off, and the lifetime is shortened due to the generation of rust.

Further, since the guard piece 55 is incorporated under the packing 54, the maintenance of the packing 54
It is necessary to repair or replace the guard piece 55 after removing the guard, which complicates the operation. In the assembling operation, the packing 54 and the guard piece 55 are separately connected to the holding member 52, so that the number of working steps increases and the effect on productivity cannot be ignored.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a gate device for a backflow prevention or water storage having a water sealing structure capable of preventing a reverse break of a packing with a simple structure in which the coating of a gate body does not peel off. Aim.

[0012]

According to the present invention, there is provided a holding member disposed in a frontage direction of a water channel, and a gate body connected to a base end of the holding member and rotatable up and down. A waterway gate device that pivots up and down to open and close an outlet of the waterway, wherein between the holding member and a base end of the gate body, the gate body is convex upward when the gate body stands. A packing for elastically deforming the water passage and stopping the water between the water passage and the downstream thereof is provided. Further, the packing is elastically deformed substantially in accordance with the deformation of the packing under the packing to restrict downward convex deformation of the packing. It is characterized by having a shape means.

According to the present invention, since the shape-retaining means regulates downward convex deformation of the packing, it is possible to prevent the packing from being caught in the holding member and the base end of the gate body, and to prevent the packing from being broken or the like. Water defects can be prevented.

In the present invention, the shape retaining means may be constituted by an elastically deformable backing plate whose both ends are restrained at substantially the same positions as the respective fixing points of the packing to the holding member and the gate body. .

In such a configuration, the backing plate is elastically deformed so as to follow the deformation of the packing when the gate body rotates, thereby preventing downward deformation of the packing.

In the apparatus having the backing plate, the packing and the backing plate may be overlapped with each other and connected to the holding member and the gate body by common fixing means.

In this configuration, the packing and the backing plate can be attached to and detached from the holding member and the gate body at the same time, so that assembly and maintenance and inspection can be simplified.

[0018]

FIG. 1 is a schematic longitudinal sectional view showing a main part of a waterway gate device according to an embodiment of the present invention.

As shown in FIG.
A culvert-shaped waterway 23 is formed by the base plate 1, the roof 22, and side plates (not shown) formed at both ends in the frontage direction, and a gate device is provided at a part of the waterway 23 facing the river 24. is set up. This gate device is composed of a holding member 1 and a gate body 2 incorporated on the bottom 21 side, as in the conventional example.

A hollow float 2 is provided at the upper end of the gate body 2.
a and a back plate 2b on the back side.
The lower end is pivotally connected to the holding member 1 and pivots between the positions shown by the solid and broken lines in the figure. When the water level on the side of the river 24 is high, the posture shown by the solid line in FIG.
The upper end of “b” abuts against a water-stopping member 22 a provided on the ceiling 22, and the water is stopped. In addition, similarly to the well-known gate device, packing for stopping water by contacting the side panel is provided on both end surfaces in the width direction of the gate body 2 over the entire length in the height direction.

FIG. 2 is an enlarged view showing a main part of a connecting portion between the holding member 1 and the gate main body 2.

The holding member 1 also has a stay 1a, as in the prior art.
And a face plate 1b and a bracket 1c. The brackets 1c are arranged at two or more places with an interval in the width direction of the face plate 1b, and rotatably connect the flange 2c at the base end of the gate body 2 by hinge pins 1d. A packing 3 for sealing is provided between the stay 1a of the holding member 1 and the back plate 2b of the gate body 2. The packing 3 has substantially the same length as the width direction of the stay 1a, and plays a role in stopping water at a connecting portion between the holding member 1 and the gate body 2. The configuration so far is almost the same as that of the conventional example.

As shown in FIG. 2, a backing plate 4 using a metal plate is provided below the packing 3. FIG.
4 shows an arrangement of the backing plate 4 and FIG. 4 shows an exploded perspective view of the mounting structure of the packing 3 and the backing plate 4.

The packing 3 is a flat rubber made of synthetic neoprene, for example, and has a thickness of about 8 mm to 12 mm. The backing plate 4 is made of a stainless steel plate of SUS304 and has a thickness of 0.3 mm to 1.0 mm.
The width is about 0 mm and the width is about 200 mm to 400 mm. The dimension of the backing plate 4 in the longitudinal direction (the direction of arrow A in FIG. 4) is the same as that of the packing 3, and
It is about 0 mm to 400 mm. The packing 3 and the backing plate 4 are provided with holes 3a and 4a for passing bolts for fixing.

As shown in FIG. 3, the backing plate 4 is disposed so as to span the stay 1a of the holding member 1 and the back plate 2b of the gate body 2, and a plurality of the backing plates 4 are provided at appropriate intervals in the width direction of the gate body 2. Are arranged. Then, as shown in FIG. 4, the packing 3 is placed on the arrayed backing plates 4.
The holes 3a and 4a are aligned as an arrangement overlaid by. Next, the bolt 6 is inserted through the washer plates 5a and 5b.
Is screwed into the stay 1a and the back plate 2b through the holes 3a, 4a to fix the packing 3 as shown in FIG.
And the backing plate 4 are connected between the holding member 1 and the gate body 2.

Here, when the gate body 2 rises, it is preferable to promote deformation so that the packing 3 and the backing plate 4 have a curved surface that is upwardly convex as shown in FIG. In order to promote such deformation, a ridge 2d is provided on the base end side of the back plate 2b of the gate body 2 as shown in FIG. The ridge 2d is made of a metal plate having a constant thickness, and is attached to the same length as the width of the back plate 2b. When the backing plate 4 and the packing 3 are overlaid and fixed to the back plate 2b, The back inner plate 4 and the packing 3 are swelled upward in FIG. Thereby, when the gate main body 2 is raised, the packing 3 and the backing plate 4 are easily deformed so as to be convex upward as shown in FIG.

In the above configuration, the gate body 2 rotates up and down due to the difference in water level between the water channel 23 and the river 24. In the operation of the gate body 2, when the gate body 2 stands up as shown by the solid line in FIG. 1, the packing 3 is bent and deformed so as to have an upwardly convex curved surface, and the posture shown by the broken line in FIG. 1. When the gate body 2 falls down, it is deformed into a flat plate shape as shown in FIG. On the other hand, since the backing plate 4 is a stainless steel plate of about 0.3 mm to 1.0 mm,
It can be elastically deformed with the rotation of the gate body 2, and deforms so as to always have a cross-sectional shape following the packing 3.

That is, as shown in FIG. 4, the lengths of the packing 3 and the backing plate 4 in the direction of arrow A are substantially the same, and the fixing points by the bolts 6 are also the same. And
When the packing 3 is put on the backing plate 4 in the state shown in FIG. 4, these are overlapped by two flat plates. When the gate body 2 rises, the packing 3 is elastically deformed into an upwardly convex curved surface, and the backing plate 4 is similarly deformed. Thus, the backing plate 4 is deformed by its elasticity so as to always follow the lower surface of the packing 3. Therefore, the packing 3 is supported by the backing plate 4 both when the gate body 2 rotates and when it is stationary. Since the backing plate 4 is a metal plate, the backing plate 4 has a higher mechanical strength than the rubber packing 3 and prevents the packing 3 from being deformed by receiving a load applied from above.

As described above, the backing plate 4 is
The shape of the packing 3 is maintained following the lower surface of the packing 3, and the mechanical strength of the packing 3 prevents the packing 3 from being depressed downward from the state shown in FIG.
Therefore, even if there is a load of soil and water accumulated on the packing 3, the packing 3 does not bite between the corner at the upper end of the face plate 1 b and the lower end of the gate body 2.

Since the backing plates 4 are arranged at intervals as shown in FIG. 3, the packing 3 at the interval is not actually backed. However, it is sufficiently possible to prevent the portion where the packing 3 is not lined up from being caught by an appropriate relationship between the width of the backing plate 4, the arrangement pitch thereof, and the thickness of the packing 3. Needless to say, the backing plate 4 may have the same length as the packing 3 (corresponding to the length of the gate body 2 in the frontage direction) so as to back up the entire packing 3.

The backing plate 4 is fixed to the back plate 2b by bolts 6. When the gate body 2 rotates, the backing plate 4 merely covers the back plate 2b and makes contact. That is, since the backing plate 4 does not slide on the surface of the back plate 2b, the coating on the surface of the back plate 2b is not peeled off, and the generation of rust can be suppressed and the durability can be improved.

As shown in FIGS. 3 and 4, the packing 3 and the backing plate 4 can be simultaneously attached to and detached from the holding member 1 and the gate body 2. For this reason, the number of assembling steps is reduced, and the replacement work and the maintenance and inspection when the metal of the backing plate 3 is fatigued can be easily performed.

In the above embodiment, a gate device for preventing backflow provided between a water channel and a river has been described.
It is a matter of course that the configuration of the present invention can be applied also to a water storage gate device that opens and closes a gate body whose base end is rotatably connected to a holding member by operating a hoist on a top plate.

[0034]

According to the present invention, the packing can be prevented from being caught between the holding member and the gate body by the backing plate, and the durability of the gate body can be improved. In addition, since the packing and the backing plate can be easily assembled and disassembled, productivity and on-site maintenance and inspection can be easily performed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an outline of a waterway gate device according to an embodiment of the present invention.

2 is a longitudinal sectional view of a main part showing a connecting portion between a holding member and a gate body of the waterway gate device of FIG. 1;

FIG. 3 is a perspective view showing an example in which a backing plate is arranged on a holding member and a gate body.

FIG. 4 is an exploded perspective view of a main part showing a mounting structure of a backing plate and a packing to a holding member and a gate body.

FIG. 5 is a schematic view of a conventional water channel gate device having a water blocking structure.

6 is an essential part of the water channel gate device of FIG. 5,
(A) is a longitudinal cross-sectional view which shows the mounting structure of the packing for water stoppage and a guard piece, (b) is a schematic perspective view which shows the structure of a guard piece.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Holding member 1a Stay 1b Faceplate 1c Bracket 1d Hinge pin 2 Gate body 2a Float part 2b Backplate 2c Flange 3 Packing 3a Hole 4 Backing plate 4a Hole 5a, 5b Washer plate 6 Bolt 21 Bottom board 22 Topway 22a Water stopping member 24a River

Continued on front page (72) Inventor Masafumi Takemori 450-1 Ishikawa, Ueki-cho, Kamoto-gun, Kumamoto F-term (reference) in Kaisei Kogyo Co., Ltd. 2D019 CA01 EA00

Claims (3)

[Claims] 1. A holding member arranged in a frontage direction of a water channel, and a gate main body connected to a base end of the holding member and rotatable up and down, wherein the gate main body is turned upside down and the water channel is rotated. A waterway gate device that opens and closes an outlet of the waterway, wherein the waterway is elastically deformed so as to be convex upward when the gate body stands up, between the holding member and a base end of the gate body. A packing for stopping water between the downstream side of the packing and a shape retaining means for elastically deforming substantially in accordance with deformation of the packing and restricting downward convex deformation of the packing is provided below the packing. Characteristic gate device for waterway. 2. The shape-retaining means is an elastically deformable backing plate whose both ends are restrained at substantially the same positions as respective fixing points of the packing to the holding member and the gate body. The waterway gate device according to claim 1. 3. The packing and the backing plate,
The waterway gate device according to claim 2, wherein the gate members are overlapped and connected to the holding member and the gate body by common fixing means.