JP3965612B2 - Radial gate - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a radial gate in which a door body is provided so as to be rotatable between a water channel and a water channel so as to cross a water channel or a river.
[0002]
[Prior art]
Conventionally, as shown in FIG. 6, a radial gate provided in a water channel (or river) is provided with bearings 2 on both side walls of the water channel 1, and supports the door body shaft 3 crossing the water channel 1 with the bearing 2. The middle part of the pair of gate arms 4 arranged in the flow direction of the water channel 1 is fixed to the door body shaft 3, the door body 5 is provided at the upstream end of the gate arm 4, and the counterweight is provided at the downstream side of the gate arm 4. 6 is installed. The counterweight 6 is adjusted so as to offset the weight of the door body 5 as the door body 5 rotates.
[0003]
A float 7 and a float chamber 8 are provided on the side of the waterway of the radial gate. The float chamber 8 communicates with the upstream side of the door body 5 through an inflow port 9, and the float 7 is provided by a float arm 10 attached to the upper end thereof. The door body shaft 3 is connected.
The upstream water level is transmitted to the float chamber 8 through the inlet 9, and when the upstream water level rises, the float 7 in the float chamber 8 also rises, the float arm 10 moves, and the door body shaft 3 and the gate arm 4 rotate upward. Let Therefore, the door body 5 moves upward and causes a large amount of water flow. If the upstream water level is stabilized in this state, the float 7 is not changed and the position of the door body is also stabilized.
[0004]
As shown in FIG. 7, when the radial gate is fully closed, the door body 5 contacts the bottom surface of the water channel, and the counterweight 6 is lifted. Further, as shown in FIG. 8, when the radial gate is fully opened, it is the same as the state in which the float 7 is raised by the flood and the door body 5 is retracted above the water channel.
When the radial gate is fully opened, the counterweight 6 provided at the other end of the gate arm 4 conversely approaches the water surface. Therefore, it is necessary to increase the altitude of the door body shaft 3 so that the counterweight 6 does not enter the water channel. There is.
Accordingly, the bearing 2 on the side wall of the water channel is installed at a high position, and the gate arm 4 and the like can be completely retracted from the water channel 1.
[0005]
[Problems to be solved by the invention]
By the way, when the altitude of the door body shaft 3 is increased so that the counterweight 6 does not enter the water channel, the gate arm 4 is lengthened in proportion thereto, so that the apparatus becomes larger in the flow direction of the water channel 1. However, the installation location of the radial gate is close to the road from the viewpoint of management, and it is constructed in a location with little land, so it is desired to reduce the size. There is a risk that the landscape will be damaged.
[0006]
An object of this invention is to provide the radial gate which maintained the performance, made equipment compact, and did not impair the scenery.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, the invention according to claim 1 is characterized in that a base arm is supported on a door body shaft provided in the transverse direction of the water channel, a gate arm is provided on the upstream side, and a door is provided on the upstream end. A weight axis is provided in parallel above the door body axis, supports an intermediate portion of the weight arm arranged in the flow direction of the water channel on the weight axis, a counterweight is attached to the downstream weight arm, and , characterized in that the upstream end of the upstream weight arms and linking a linking member and a generally intermediate portion of the game arm.
[0008]
The invention according to claim 2 is characterized in that, in the invention of claim 1, a hoisting machine and a wire for rotating the door body are provided.
[0009]
The invention described in claim 3 is characterized in that, in the invention of claim 1, a float chamber and a float for rotating the door body are provided.
[0010]
In the above configuration, it is not necessary for the gate arm to which the door body is fixed to rotate to open and close the water channel, but by using the link mechanism, the same operation as the gate arm is performed above the gate arm. By providing a weight arm to be mounted and attaching a counterweight to the weight arm, the counterweight can be stopped at a high position even when the door body is fully opened.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
The radial gate 11 shown in FIG. 1 has two sets of bearings 2 and 13 arranged vertically on both side walls of the water channel 1 via columns 12, and the lower bearing 2 is a door erected in the width direction of the water channel. The body shaft 3 is inserted, and a weight shaft 14 extending in parallel with the door body shaft 3 is inserted into the upper bearing 13. A pair of gate arms 4 having ends supported by the door body shaft 3 project from the upstream side of the water channel, and the upstream end of the gate arm 4 has an arcuate door body centered on the door body shaft 3. 5 is fixed at a height near the water pressure center of the door body 5.
[0012]
On the other hand, an intermediate portion of a pair of weight arms 15 arranged in the flow direction of the water channel 1 is supported on the weight shaft 14, and a counterweight 6 is mounted on the downstream side portion of the weight arm 15. In addition, with the gate arm 4 and the weight arm 15 in parallel, the upstream end of the weight arm 15 and the corresponding position of the gate arm 4 below (the substantially middle portion of the gate arm 4) are connected to the pins 16 respectively. It is connected to the connecting member 17 via the connecting member 17 to form a link mechanism. In this configuration, since the centers of gravity of both arms 4 and 15 are on the outside, the connecting member 17 may be a wire rope.
[0013]
The mounting position and weight of the counterweight 6 are determined so that the balance of the moving device is always balanced by the link mechanism of the door body 5, the gate arm 4, the weight arm 15, and the connecting member 17 regardless of the opening degree of the door body 5. It has been. At this time, the distance of the counterweight 6 from the weight shaft 14 can be arbitrarily increased as long as the product of the distance and the weight of the counterweight 6 is a constant value, but this impairs the effect of the present invention. Therefore, it is shortened appropriately.
[0014]
As described above, the weight shaft 14 is provided above the door body shaft 3 and the counterweight 6 can be rotated above the water channel by the weight arm 15, so that the altitude of the door body shaft 3 is lowered and the door body 5 is The counterweight 6 does not enter the water channel even if it is rotated largely to fully open (see FIG. 2), and therefore the length of the radial gate 11 in the flow direction of the water channel 1 can be drastically reduced. is there.
[0015]
Here, the case where the radial gate 11 is opened and closed with a manual opening and closing device will be described.
As shown in FIG. 1, a wire 18 having one end attached to the gate arm 4 is wound or unwound by a manual winch 19 on a winch base (not shown) installed across the water channel at the upper part thereof. Then, the gate arm 4 is rotated to open and close the door body 5. As described above, since the counter weight 6 balances the device including the door body 5, it can be opened and closed with a small amount of power. Therefore, the opening / closing operation can be easily performed in a short time even manually.
An open / close operation by a float can also be performed, which will be described later.
[0016]
Next, another embodiment will be described.
As shown in FIGS. 3 and 4, the difference from the configuration of the radial gate 11 is that the position of the door body shaft 3 is low enough to be submerged during a flood. That is, the bearing 2 of the door body shaft 3 is arranged in the middle portion of the water channel side wall, and the door body shaft 3 is divided into left and right parts and is inserted into the bearings 2 on both side walls. Each gate arm 4 is connected to each door shaft 3 protruding from the bearing 2. In addition, the gate arm 4 and the connecting member 17 are also configured to have a cross-sectional shape that does not occupy a cross section of the water channel, are configured so as not to increase obstacles of running water in the cross section of the water channel, and are arranged so that the water cross section is hardly excluded.
In this way, by arranging the door body shaft 3 divided and subdivided in the middle part of the water channel side wall, the door body shaft 3 is arranged in the upstream and downstream direction in comparison with the system in which the door body shaft 3 is disposed in the upper part of the water channel side wall. The length is further shortened, and the overall size of the apparatus can be further reduced.
[0017]
Next, an automatic opening / closing apparatus using a float will be described taking the radial gate 11 shown in FIG. 3 as an example.
On the side of the radial gate 11 shown in FIG. 5, there is provided a still water basin 20 communicating with the upstream water channel of the door body 5 through the inlet 9, and the still water basin 20 is connected to the float chamber 8 via the overflow weir 21. The float chamber 8 communicates with the basin 23 through the discharge port 22, and the basin 23 communicates with the downstream water channel of the door body 5 through the outlet 24.
The weight shaft 14 extends to the side of the water channel on the side where the float chamber 8 is provided, and a float arm 25 extending in the upstream direction is fixed. In this case, the weight arm 15 is also fixed to the weight shaft 14.
The float 7 is placed in the float chamber 8, and a connecting rod 26 extending in the vertical direction is fixed to the center of the upper part of the float. The upper end portion of the connecting rod 26 and the upstream end portion of the float arm 25 are connected via a pin 16 so that the fully closed position of the door body 5 and the lowest position of the float 7 are aligned.
[0018]
Next, the operation of the automatic opening / closing device will be described.
The water level in the float chamber 8 varies depending on the amount of inflow from the overflow overflow weir 21 and the amount of outflow from the outlet 22 (outlet 24). In the equilibrium state of the radial gate 11, when the upstream water level of the door body 5 rises, the amount of inflow from the overflow weir 21 increases, the water level of the float chamber 8 rises, the float 7 rises and is linked by the link mechanism. The gate arm 4 is turned to raise the door body 5 and increase the amount of downstream flow. Thereby, the upstream water level can be lowered.
Conversely, when the upstream water level falls, the amount of inflow from the overflow weir 21 to the float chamber 8 decreases and the amount of outflow from the outlet 24 relatively increases, so that the water level in the float chamber 8 decreases and the float 7 In conjunction with the descent, the door body 5 is lowered and the upstream water level is raised. The above operation is continuously performed, and the upstream water level is maintained within a substantially constant range.
[0019]
Thus, since the radial gate 11 which performs automatic water level adjustment with the float 7 uses the buoyancy of the float 7, it is required to balance the weight of the door body. Further, if the balance adjustment is matched, the float 7 can be reduced, and the radial gate 11 can be reduced in size.
[0020]
【The invention's effect】
In the present invention, since the length of the entire radial gate in the water flow direction is shortened by the link mechanism as described above, the weight arm above the gate arm rotates in conjunction with the gate arm that rotates the door of the radial gate. By doing so, the performance of operation is maintained, and the counterweight is positioned above the water surface. Therefore, the downsizing of the radial gate is achieved, and even a small space close to the road can be installed, which is good in terms of management and spread, and has a positive effect on the landscape.
[Brief description of the drawings]
FIG. 1 is a side sectional view of a radial gate according to an embodiment of the present invention.
2 is a side cross-sectional view of the radial gate shown in FIG. 1 when fully open (at the time of flooding).
FIG. 3 is a side sectional view of a radial gate according to another embodiment.
4 is a side cross-sectional view of the radial gate shown in FIG. 3 when fully open (at the time of flooding).
FIG. 5 is a side sectional view showing a control device for the radial gate shown in FIG. 3;
FIG. 6 is a perspective view of a conventional radial gate.
7 is a side cross-sectional view of the radial gate shown in FIG. 6 when fully closed.
8 is a side cross-sectional view of the radial gate shown in FIG. 6 when fully open (at the time of flooding).
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Waterway 3 Door axis | shaft 4 Gate arm 5 Door body 6 Counterweight 7 Float 8 Float chamber 11 Radial gate 14 Weight axis 15 Weight arm 17 Connecting material 18 Wire 19 Hoisting machine

Claims (3)

Supporting the base end on the door body axis provided in the transverse direction of the water channel and projecting the gate arm on the upstream side and providing the door body on the upstream end,
A weight shaft is provided in parallel above the door body shaft, supports an intermediate portion of the weight arm arranged in the flow direction of the water channel on the weight shaft, a counter weight is attached to the downstream weight arm, and the upstream weight radial gate, characterized in that the link bound the upstream side end portion of the arm and the substantially middle portion of the game arm by a connecting member.   The radial gate according to claim 1, further comprising a hoisting machine and a wire for rotating the door body.   2. The radial gate according to claim 1, further comprising a float chamber and a float for rotating the door body.

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