JP3309733B2 - Tide gate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tide gate installed at a fishing port, estuary or the like.

[0002]

2. Description of the Related Art In order to protect fishing and other ports from storm surges and tsunamis, tide gates are installed at the entrances of the ports. Also. At the estuary, tide gates will be installed to prevent seawater and freshwater from mixing for intake of agricultural or industrial water.

As the tide gate, a gate type tide gate (hereinafter referred to as prior art 1) as shown in FIG. 8 (front view) is known.

In FIG. 8, reference numeral 10 denotes a bottom of the foundation, 11 denotes a column, 12 denotes a beam frame, and 13 denotes a power room. A gate 14 is provided between the columns 11, 11, and a wire rope 15 wound around a motor drum in the power chamber 13 is provided.
The gate 14 is moved up and down to open and close the gate 14. In normal times, the gate 14 is locked at an upper portion indicated by a two-dot chain line, and a boat such as a fishing boat passes below.

In a tide gate (hereinafter referred to as prior art 2) shown in FIG. 9 (side sectional view), a lower end of a gate 16 is fixed to a bottom foundation 10 by a hinge 17, and the gate 16 is centered on the hinge 17. In the normal state, the wire rope 18 is fed out and stored in the concave portion 10 'of the bottom foundation 10 (indicated by a two-dot chain line). In an abnormal situation, the water rope is closed by raising the gate 16 by winding the wire rope 18 up. (Solid line diagram). In addition, a is the water level at normal times, and B is the water level at the time of abnormalities such as tsunami and storm surge.

FIG. 10 (side sectional view)
In a drop type discharge gate for a dam described in Japanese Patent No. 172531 (hereinafter referred to as prior art 3), a concave portion 20 is provided in a dam body 19, and a gate 21 is vertically moved by a wire rope 22 in accordance with a discharge water level. To move
The state in which the gate 21 is stored in the recess 20 is a state in which the discharge water level is the lowest.

[0007]

However, in the above-mentioned prior art 1, the door body must be locked at a high position in the air in normal times, and the height is increased in consideration of the downward passage of a fishing boat or the like. There is a problem that it has to be high and hinders the landscape.

[0008] Furthermore, since the installation work of the sluice gate is performed in a dry state, the construction period is long, and there is a problem that the temporary closure of the entrance of a port or the like becomes longer and hinders the passage of fishing boats and the like.

In the prior art 2, the gate 16
It is necessary to perform a partition operation in order to make the dry condition.

Furthermore, there is a high possibility that the hinge 17 of the gate 16 will be corroded in water. The prior art 3 is a gate for dam discharge, in which the gate moves up and down in response to fluctuations in the discharge water level, and cannot be applied to divert this technology to a tide gate.

An object of the present invention is to solve the above-mentioned problems in the scenery and shorten the construction period.

[0012]

A first means for solving the above-mentioned problems is to form a concave water main body by providing side frames on both sides of a bottom frame, and to connect a water channel to the bottom frame of the water main body. A recess is formed in the transverse direction, and a door having a floating structure that moves up and down by an opening and closing mechanism attached to the side frame is provided in the recess ,
The door body can be stored in the recess,
Lock that holds the door body stored in
A tide sluice, characterized in that provided.

According to the above-mentioned means, in normal times, the door is stored in the bottom frame of the floodgate main body, so that it does not hinder the passage of ships, and the landscape is good because there is no frame at the top.

The water gate body and the door body, which are composed of the side frame and the bottom frame, have a floating structure, and furthermore, have a unit structure in which an opening / closing mechanism for vertically moving the door body is incorporated.
Transportation to the site can be towed in a floating state, and installation at the site is completed by sinking.

Further, since the door body has a floating structure, when the door body is closed, if the opening / closing mechanism is unlocked, it rises by its own buoyancy, so that no power is required. At the time of inspection, since the door body floats, work such as round trip is easy.

A second means for solving the above-mentioned problem is the tide gate according to the first means, which comprises a door having a lid provided on an upper part thereof.

According to the second means, when the door is stored in the recess of the bottom frame, the lid covers the upper part.
Light is blocked, and seawater organisms do not adhere to the surface of the door. In addition, sand, mud, and the like do not accumulate in the recess due to the lid.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A tide gate according to the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view,
FIG. 2 is a front view of FIG.

1 and 2, reference numeral 1 denotes a floodgate main body, and the floodgate main body 1 is a floodgate main body having a U-shaped cross section including side frames 2 and 2 and a bottom frame 3. The side frames 2 and 2 and the bottom frame 3 are, for example, a hybrid caisson structure, and a recess 4 is provided in an intermediate portion over the width direction. And so on, so as not to hinder traffic. Incidentally, a indicates the tide level in normal times, and B indicates the tide level in abnormal times.

The inside of the door body 5 is a space, which floats alone on the water surface. As shown in FIG. The door mechanisms 5 are connected to each other via the cylinder mechanisms 6 and 6 and the cylinder rods 6 ′ and 6 ′, which are provided as opening / closing mechanisms. ing. When the door body 5 is settled, the cylinder mechanisms 6 and 6 do not need to continuously maintain the pressure. When the door body 5 is settled in the concave portion 4, the cylinder mechanism 6, 6 locks the middle of the pipe to maintain the pressure at the time of sinking. is there.

Therefore, in an emergency such as a tsunami or storm surge, the door 5
When the hydraulic lock (not shown) of the cylinder mechanism 6, 6 is released, the cylinder mechanism 6 is detached from the concave portion 4 by buoyancy to close the water surface as shown in FIG. The opening and closing mechanism may use a screw mechanism instead of the cylinder mechanism.

Further, the door body 5 is lifted by releasing the cylinder systems 6, 6 at the time of repair and inspection.
It is possible to tow to the repair ground in a floating state.

Further, a lid 9 is provided on the upper part of the door body 5. When the door body 5 is stored in the recess 4 as shown in FIG. In the state, seawater organisms do not adhere to the surface of the door body 5 in the recess 4.
In addition, it can also serve to prevent accumulation of sand, mud, and the like. The lid 9 is made of synthetic rubber, plastic or any other suitable material for performing the above-mentioned functions.

In the plan view of FIG. 4, reference numeral 7 denotes door stops provided on both sides of the door body 5 on the offshore side.
And a door stop 7 is provided with stays 8 (8a, 8b, 8) provided between the side frames 2, 2.
c).

By detaching the pins on the frames 2 and 2 of the stay 8, the door stop 7 rotates about the hinges 7 ′ of the frames 2 and 2, so that the door 5 can be removed during repair. The installation of the door body 5 is performed by the reverse operation.

The both sides of the door body 5 inside the port are:
It is supported by the steps 2 ′ (on both sides) of the side frames 2, 2. Accordingly, when water pressure from the offshore side acts on the door body 5, the door body 5 is received by the step 2 '.

The door stop 7 and the step 2 'also serve as a guide when the door 5 moves up and down. The lid 9 is not shown.

The tide gate of the present invention having the above structure is as follows.
In advance, the door body 5 is attached to the water gate body 1 by the cylinder mechanism 6,
6 is built and transported to the site in a floating state,
It is set down at the entrance of a harbor or river mouth.

Next, a tide gate according to a second embodiment of the present invention will be described with reference to FIGS. 5 (side sectional view), FIG. 6 (viewed from arrow B in FIG. 5), and FIG. 7 (plan view). .

In FIG. 5 to FIG. 7, reference numeral 1 denotes a floodgate main body, which comprises side frames 2, 2 and a bottom frame 3, which is the same as in the first embodiment.

In the present invention, the door 5 has a two-stage structure of 5a and 5b, and a recess 4 for storing the two-stage doors 5a and 5b is provided in the bottom frame 3. The doors 5a, 5
Above b, cylinder rods 6a 'and 6b' of the cylinder mechanisms 6a and 6b are connected, and the water surface is closed with a two-stage structure of upper and lower doors.

As shown in the plan view of FIG. 7, the doors 5a and 5b have a door stop 10 formed at an intermediate portion of the side frame 2.
One side of each of the door bodies 5a and 5b abuts on the door stop 10, and another door stop 7a and 7b abuts on the opposite side, and the separate door stop 7a and 7b is provided in the first embodiment. In the same manner as in the embodiment, the stay is supported by the stay 8.

The two-stage structure of the door body has the advantage that a door body with a higher tide can be formed, and when the tide level is kept constant, the size of a single unit can be reduced, and the manufacture and installation are facilitated.

It should be noted that the same effect can be obtained by providing the lids 9 also on the doors 5a and 5b of the present invention.

[0035]

The present invention is as described above. Since the door of the floodgate is stored in the recess of the bottom frame, the height of the upper portion of the floodgate can be reduced, and the landscape is not impaired.

Further, since the door body has a floating structure, it is possible to instantly respond to closing of the water gate in an emergency, and to be able to float and move at the time of new construction, repair and inspection.

Further, since the lid is provided on the upper part of the door body, when the door body is stored in the concave portion of the bottom frame, the light is shielded and there is no adhesion of seawater creatures. Nor.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a tide gate according to the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is an enlarged side view of a door according to the present invention.

FIG. 4 is a plan view of a tide gate according to the present invention.

FIG. 5 is a side sectional view of a second embodiment of the tide gate according to the present invention.

FIG. 6 is a front view as viewed in the direction of arrow B in FIG. 5;

FIG. 7 is a plan view of a tide gate according to a second embodiment of the present invention.

FIG. 8 is a front view of a tide gate in Conventional Technique 1.

FIG. 9 is a side sectional view of a tide gate in Conventional Technique 2.

FIG. 10 is a side sectional view of a tide gate according to the related art 3.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water gate main body 2 Side frame 3 Bottom frame 4 Concave part 5 Door body 6 Cylinder mechanism (opening / closing mechanism) 7 Per door 8 Stay 9 Lid

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-7-197751 (JP, A) JP-A-58-37316 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E02B 7/50 E02B 7/26

Claims (2)

(57) [Claims] 1. A recessed water gate body is provided by providing side frames on both sides of a bottom frame, and a recess is formed in a bottom frame of the water gate body in a direction crossing a water channel, and the recess is formed in the recess. A floating body door that moves up and down by the attached opening / closing mechanism is installed.
The door body can be stored in the recess,
A lock that holds the door stored inside the unit against its buoyancy
A tide gate that is equipped with a bridge. 2. The tide gate according to claim 1, wherein the tide gate comprises a door having a lid provided on an upper portion thereof.