JP3890527B2 - Water gate - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
This invention is mainly related to large floodgate applicable as seawall sluices for storm surge measures of the port.
[0002]
[Problems to be solved by the invention]
Many of Japan's port cities are located in relatively low positions such as alluvium and landfills, so a flexible response to global warming and sea level rise due to weather changes is required. In particular, in order to form a tide line that closes the entire port including the water area and landfill, it is necessary to install a large sluice that allows large ships to navigate. Although this large sluice is currently under investigation, some of them have an opening of about 450 m, and the following problems are raised in the prior art.
[0003]
・ There are many relatively small ones because they do not assume the passage of large ships.
・ Maintenance and repair are likely to be difficult when using complex machines.
・ In the case of a large-scale gravity sluice, the width of the foundation becomes wider. In addition, opening and closing the sluice is not easy.
[0004]
The present invention has been conceived in order to solve the above-described conventional problems, and its purpose is to make the base width small even for a large sluice gate capable of navigating a large ship, and to make a simple moving device. It is to provide a new sluice gate that can easily open and close even a large gate box.
[0005]
[Means for Solving the Problems]
According to the above-described object, the present invention provides a foundation part installed at the bottom of the water across the water channel part, a plurality of gate boxes that move on the base part to open and close the water channel part, and a base part and a bottom surface of the gate box. A movable box support device provided with a low friction mechanism for reducing friction with the foundation, and a propulsion device provided between the foundation and the gate box. The inside of the jetty is configured as the storage part of the gate box and the landing part of the moving device composed of the box support device and the propulsion device .
[0006]
In addition, the base portion includes a guide plate laid with a guide rail for the box propulsion on the bottom surface of the guide groove arranged in parallel on the upper surface, and the low friction mechanism having the vertical movement mechanism is installed on the guide plate. The box support device slidably accommodated in the groove and the pulling rod mounted on the guide rail and connected to the gate box, and the reaction force is alternately applied to the guide rail and the gate box to support the box. And the propulsion device in the guide groove that moves with the gate box on the device .
[0007]
Moreover, the said box support apparatus equips the box receiving girder provided in the top face of the said vertical movement mechanism with the self-propelled apparatus by a hydraulic or electric wheel .
[0008]
In the above arrangement, in order to significantly reduce the bottom friction of the gate a box body when the moving box-body supporting apparatus, Ru can be applied to the gate a box of large. Also, the box support device and the propulsion device are not incorporated in the foundation or gate box, so every time the sluice gate is opened and closed, it can be landed on the jetty, overhauled and replaced, and maintenance and repair can be performed easily. .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an embodiment of a sluice according to the present invention, wherein 1 is a waterway part, 2 is a fixed jetty constructed on both sides of the waterway part 1, and 3 is a waterway part from the side of the jetty 2 and 2. Reference numeral 5 denotes a gate box that moves on the base part and opens and closes the water channel part 1.
[0010]
The gate box 5 is made of reinforced concrete and is divided into four blocks. The contact ends of these blocks are fitted to each other to form a series of sluices that close the water channel portion 1 so as to form a concave end surface and a convex end surface. It forms, and the water stop member 6 is attached to the contact surface along the box outline except a bottom face.
[0011]
The base part 3 is made of a steel shell having a concave cross section and concrete cast in the inside, and the bottom part of the gate box 5 is accommodated between both side edges of the upper surface, causing lateral displacement. The gate box 5 moves in the longitudinal direction. In addition, the both side edges of the upper surface may be formed intermittently, and in some cases, the protrusions may be protruding at regular intervals protruding from both sides of the upper surface.
[0012]
Further, four guide grooves 7 are arranged in the longitudinal direction on the upper surface between the side edges of the base portion 3, and a concrete protective mat 3 b made of an elastic protective material is provided on the upper surface excluding the guide grooves 7. On both sides of the bottom surface of the guide groove 7, a box-propelling guide rail 8 having stoppers 81 on the outer surface at regular intervals is laid. A propulsion device using a hydraulically operated propulsion jack 9 that pulls and moves the gate box 5 using the guide rail 8 as a reaction force is connected to the box end face and disposed in the guide groove 7.
[0013]
Further, a guide plate 10 is laid over the entire length of the bottom surface between the guide rails of each guide groove 7, and the box support device 11 is composed of three sets on the guide plate 10, and six sets are one block. It is installed so as to be located at equal intervals over the entire length of the gate box 5. A box receiving girder 14 is provided on the top surface of the box supporting apparatus 11 to connect the three sets as a set.
[0014]
As shown schematically in FIG. 7, wheels that can freely move up and down are attached to both ends of the box receiving girder 14, and a hydraulic or electric self-propelled device 15 that uses one of the wheels as a driving wheel is mounted on the box receiving girder. It is attached to a girder 14 so that it can be moved for each group. In addition, each set is connected by a connecting pipe 16 in order to maintain a distance, and although omitted in the drawing, a hydraulic hose, an electric cord, or the like is attached to the connecting pipe 16 to hinder the movement of the box support device 11. It ’s like that.
[0015]
Further, as shown in FIG. 5, a water stop groove 17 is partially provided on the upper surface of the base portion 3 below the contact portion between the blocks, and the water stop rubber tube 18 is provided in the water stop groove 17. Is housed. The water blocking rubber tube 18 is a rubber tube having a quadrangular cross section as shown in FIG. 1A. However, in the state where the water blocking groove 17 is closed by the gate box 5, Positioned below the water blocking material 6 and inflated as shown in FIG. (B), the gap between the bottom surface of the box below the contact surface and the top surface of the base portion is shut off in a watertight manner.
In addition, you may provide the water stop groove | channel 17 not only in the contact | abutting site | part of a box but continuous in the longitudinal direction of the base part 3. FIG.
[0016]
In addition, as shown in FIG. 6, a waterproofing material 19 made of rubber packing or a rubber tube or the like that expands by water injection when the water channel portion is closed is attached to the overlapping portion between the inner side of the protruding end of the jetty 2 and the side end portion of the gate box 5. The shock absorbing material 20 by the roller fender is attached to the inner surface of the jetty 2.
[0017]
The propulsion jack 9 has a traction rod 93 connected to a piston rod 92 connected to an end face of the gate box 5 and a hydraulic cylinder 91 on which wheels are movably mounted on the guide rail 8, and a receiving on the hydraulic cylinder. Suspended by a wheel 94 supported by the member, straddles the hydraulic cylinder 91 so as to be movable up and down, and has locking claws 95 at both ends formed on the lower surface of the inclined surface and the rear end formed as an engaging projection. It comprises a fixing member 96 positioned between the stoppers 81 and a counterweight 97 at the end of the arm attached to the end of the rotating shaft of the wheel 94.
[0018]
In such a propulsion jack 9, 9 showing the collapsed state, when subjected to hydraulic pressure on the piston extension side, the hydraulic cylinder over 91 side is to move the gate box making side as a reaction force. Thereby, although illustration is abbreviate | omitted, the pushing jack 9 moves to the left side of a figure, and the latching claw 95 leaves | separates from the stopper 81. FIG. When the locking claw 95 reaches the front stopper 81a by this forward movement, the engaging / disengaging member 96 is automatically raised by the counterweight 94, and the locking claw 95 at both ends gets over the stopper 81a by the inclined surface of the lower surface. The locking claw 95 after getting over is lowered to a position where it is suspended from the counterweight 94 and is positioned in front of the stopper 81a, the propulsion jack 9 is moved forward by the distance of the stopper, and the piston rod 92 is extended. .
[0019]
In this state, when the hydraulic pressure is switched and the pressure is applied to the piston reduction side, the rear end of the locking claw 95 is engaged with the stopper 81a. As a result, in the hydraulic cylinder 91, the piston rod 92 is contracted by the reaction force on the guide rail side, and the gate box 5 is pulled to the contraction limit of the piston by the pulling rod 93 and moves forward by the stopper interval. Therefore, the gate box 5 can be moved to the set position by repeatedly performing the expansion and contraction operation in the hydraulic cylinder 91. Further, at the time of backward movement, it is only necessary to change the direction by rotating the locking claw 95 by 180 degrees, and the gate box 5 can be moved by the same expansion and contraction operation as at the time of forward movement.
[0020]
The box support device 11 includes a low friction mechanism 12 that reduces the bottom friction of the gate box 5 and a vertical movement mechanism 13 on the upper side when the gate box 5 moves as shown in FIG. A box receiving girder 14 is provided on the top surface of the vertical movement mechanism 13 to connect the three groups as a set.
[0021]
The low friction mechanism 12 is surrounded by a primary pressure chamber 123 having a small pressure receiving area and a piston 124 between a disc-shaped support frame 121 on which the vertical movement mechanism 13 is mounted and fixed, and a bottom plate 122. The secondary pressure chamber 125 having a large pressure receiving area is formed of a concentric cylinder, and the load of the gate box 5 placed on the box support device 11 is applied to the periphery of the bottom plate as shown in FIG. It is supported at the lower end of the piston 124. In this state, when water is supplied to the primary pressure chamber 123 at a high pressure, the support frame 121 starts to rise together with the vertical movement mechanism 13, and water is also supplied to the secondary pressure chamber 125.
[0022]
When water is further supplied, the support frame 121 of the vertical movement mechanism 13 is pushed up, and water slightly flows out from the minute holes (not shown) formed in the bottom plate 122, as shown in FIG. A fluid film of water is generated between the bottom plate 122 and the upper surface of the guide plate 10, and the fluid film reduces the bottom friction of the box support device 11 so that the gate box 5 can be slid.
[0023]
When the up-and-down moving mechanism 13 is lifted after the support frame 121 is completely lifted, the gate box 5 that has been supported via the box receiving girder 14 is lifted from the upper surface of the base portion to reduce bottom friction. Will come to be. As a result, in the state where the bottom friction of both the gate box 5 and the box support device 11 is reduced (friction coefficient is 2% or less), the movement by the propulsion jack 9 can be performed smoothly.
[0024]
In the sluice having the above-described structure, as shown in FIG. 11, the inside of the jetties 2 and 2 on both sides of the water channel portion 1 is provided with the storage portion 101 of the gate box 5, and both ends of the jacks 9 and the box support device 11 Can be used as the landing unit 102 of the mobile device.
For example, in the case of a large sluice with a water channel portion 1 of 450 m, the gate box length of 1 block can be set to 115 m and the gate box 5 can be closed by 4 blocks. In addition, the storage unit 101 of the gate box 5 is 240 m, and the landing unit 102 has a length necessary for landing the moving device in the maintenance management of the moving device.
Further, the opening and closing of the water channel portion 1 by the movement of the gate box 5 can be reliably performed by remotely operating the propulsion jack 9 and the box support device 11 on land.
[0025]
FIG. 11 is an explanatory view of a sluice closing procedure. During the opening shown in FIG. 11 (A), the gate box 5 is temporarily placed on the sides of the two jetty ridges 2 and 2, and the moving device is placed underwater at the landing section 102. Pull it up to perform maintenance.
[0026]
Hereinafter, when the operation during the closing operation and the completion of the closing are sequentially shown in FIGS. 11B to 11D, first, the box support device 11 of the landing unit 102 is sent by the self-propelled movement under the inner gate box 51. Include. This transfer is preferably performed in a state where the friction with the guide plate 10 is reduced by pressurizing the low friction mechanism 12. When the set position of the gate box 51 is reached, the wheel of the self-propelled device 15 is raised and the box support device 11 is placed on the guide plate 10. In this state, the low friction mechanism 12 and the vertical movement mechanism 13 are pressurized and actuated to reduce the friction between the base portion 3 and the gate box and the base portion 3 and the box support device 11, and then the propulsion jack 9 is expanded and contracted. Repeatedly, the gate box 51 is moved from both jetties 2 and 2 to the center of the water channel 1. After moving to the central set position, the propulsion jack 9 is stopped, the pressurizing operation of the box support device 11 is stopped, and ballast water is injected into the gate box 51 as necessary to ensure a stable weight.
[0027]
When the installation of the gate box 51 inside the one block is completed, the wheel of the self-propelled device 15 is lowered and the box support device 11 is returned to the standby position of the next one block by self-propelled movement, and the outer gate box is restored. Change to below 52. Then, the bottom face friction of the gate box 52 is reduced by the pressurizing operation of the box support device 11 to move to the water channel portion 1 and contact the rear end of the gate box 51 that has already been installed to fit the end faces together. After the combination, the movement and the pressurizing operation of the box support device 11 are stopped, and ballast water is injected into the gate box 52 as necessary to ensure a stable weight.
[0028]
Thereafter, the water-stopping material 18 between the inner ends of the two piers 2 and 2 and the side end portions of the gate box 52 is poured and inflated, and the water-tight partitioning is completed to complete the closing. In addition, what is necessary is just to perform the opening procedure of the said water channel part 1 reversely.
Further, the propulsion jack 9 at the time of closing movement is preferably attached to the front side with respect to the gate box 51 and to the rear side in the case of the gate box 52. In such a state, when the box support device 11 is returned from the gate box 51 to the gate box 52, the forward jack 9 does not become an obstacle to the backward transfer even if the propulsion jack 9 is shared. The support device 11 can be replaced quickly.
[0029]
Further, it is preferable that the propulsion jack 9 of the gate box 51 after installation is removed and used after being rearranged when released. This is because the removal does not cause an obstacle to the propulsion jack 9 of the gate box 51 on the opposite side, and can move without trouble to the contact surface of the gate box 51 that is installed on the opposite side in advance. Since the jack jack 9 of the gate box 51 on the opposite side after the contact cannot be removed, it is left for release.
[0030]
In the above embodiment, the left and right gate boxes 51 and 52 are arranged in a single row, but as shown in FIGS. 12A and 12B, a plurality of blocks are arranged in a plurality of rows, and appropriate wrapping is performed between the blocks. You may make it open and close by moving. In this way, the depth for accommodating the gate boxes 51 and 52 at the time of opening is small. Further, even if the jetty is not formed, the gate boxes 51 and 52 may be accommodated by cutting at least one of the water channels 1 if the water channel 1 is narrowed with a predetermined width.
[0031]
FIGS. 13-16 shows the construction example of the base part 3 and the gate box 5. FIG.
The foundation 3 is made of a steel shell, and is towed in that state and transported to the place where the foundation pile 3a is placed, and is placed on the foundation pile 3a by a hoist ship 21 as shown in FIG. Thereafter, concrete can be placed in the steel shell and installed on the bottom of the water, and then, as shown in FIG.
[0032]
As shown in FIG. 15, the gate box 5 is constructed by crawler crane 23 so that a part of the bottom plate, outer wall, and partition wall are floated on the water by reinforced concrete, and the foundation 3 is then towed by towing. After transporting to the place where it was installed and sunk as shown in FIG. 16, it can be completed by constructing the rest on the water surface.
[0033]
In this embodiment, the base portion 3 is made of steel shell and the gate box 5 is made of reinforced concrete, but the steel shell is adopted from the precision aspect, and the reinforced concrete is adopted from the cost aspect. Therefore, even if the foundation part 3 is made of reinforced concrete and the gate box 5 is made of steel shell, there is no difference in configuration, and in short, any configuration is adopted as long as it does not depart from the gist of the present invention. You can do it.
[Brief description of the drawings]
FIG. 1 is a perspective view schematically showing a sluice according to the present invention.
FIG. 2 is a plan view of a gate box.
FIG. 3 is a side view of the above.
FIG. 4 is a front view of a gate box when a foundation portion in a water channel portion of a sluice is cut vertically.
FIG. 5 is a partial cross-sectional view of a base portion showing a state (A) and before a water stop (B) of a water stop rubber at a contact portion between gate boxes.
FIG. 6 is a partial plan view of an overlapping portion between a jetty and a gate box.
FIG. 7 is a partial longitudinal sectional view of the gate box and the foundation showing the arrangement of the box support device and the propulsion jack with respect to the gate box.
FIG. 8 is a side view of the propulsion jack in the guide groove.
FIG. 9 is an enlarged front view of the above.
FIGS. 10A and 10B are diagrams for explaining the state of the box support device when it is in operation (A) and when it is not in operation (B).
FIG. 11 is an explanatory diagram of a sluice closing procedure according to the present invention.
FIG. 12 is an explanatory diagram of a sluice closing procedure according to another embodiment.
FIG. 13 is a diagram showing a state where the foundation is set.
FIG. 14 is an installation state diagram of the foundation.
FIG. 15 is a state diagram of the construction of the gate box on the water.
FIG. 16 is an installation state diagram of the gate box.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Waterway part 2 Jetty 3 Base part 3b Concrete protection mat 4 Sea bottom 5 Gate box 6 Water stop material of abutment surface 7 Guide groove 8 Guide rail 9 Propulsion jack 10 Guide plate 11 Box support device 12 Low friction mechanism 13 Vertical movement Mechanism 14 Box receiving girder 17 Water stop groove 18 Water stop rubber tube 19 Water stop material 20 Buffer material

Claims (3)

A foundation part installed on the bottom of the water across the water channel part, a plurality of gate boxes that move on the foundation part to open and close the water channel part, and the foundation part and the bottom surface of the gate box. It is composed of a free-running box support device equipped with a low friction mechanism that reduces friction with the propeller and a propulsion device provided between the foundation and the gate box, and the foundation is installed in the channel from the inside of the jetty And a sluice characterized in that the inside of the jetty is configured as a storage part of a gate box and a landing part of a moving device comprising the box support device and the propulsion device . The base portion includes a guide plate laid together with a guide rail for box driving on the bottom surface of a guide groove arranged side by side on the upper surface, and the low friction mechanism having an up-and-down moving mechanism on the guide plate is installed on the guide plate. The box support device housed in the guide groove so as to run freely, and the tow rod is connected to the gate box on the guide rail, and the reaction force is alternately applied to the guide rail and the gate box. claim 1 sluice according you characterized by comprising the said propulsion device in the guide groove which moves together with the gate a box body on the support device. The sluice according to claim 1 or 2, wherein the box support device includes a self-propelled device using hydraulic or electric wheels on a box receiving girder provided on a top surface of the vertical movement mechanism.

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