JP3300982B2 - Automatic water level control gate weight offset device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weight canceling device for an automatic water level control gate used for separating water from a drainage channel and a diversion channel.

[0002]

2. Description of the Related Art As an example of a conventional automatic water level control gate weight offset device, there is one shown in FIGS. 5 and 6 (a similar type device is disclosed in Japanese Patent Publication No. 5-26885). As shown in FIG. 5 and FIG.
At the top end (waterway top end) 2, bearing stands 3 and 4 are provided, and on these bearing stands 3 and 4, a main shaft 5 is rotatably supported so as to cross the water passage 1, and an arm (hereinafter referred to as a gate) is mounted on the main shaft 5. Arm 6) is fixed in the upstream and downstream directions, and a float (not shown) supported on the main shaft 5 via a float arm (not shown) and arranged in a float chamber (not shown) is provided.
A door 7 for closing the water channel 1 is provided on the upstream end side (the left side in FIG. 5) of the gate arm 6, and the gate arm 6 is configured to offset the weight on the upstream end side of the gate arm 6. A counterweight 9 is suspended via an adjustment bolt 8 so as to be movable in a direction perpendicular to the gate arm 6 at the downstream end (right side in FIG. 5).

In this device, as shown in FIG. 5, in a state where the gate (door 7) is closed, upstream water is closed by the door 7 and the water level rises. Then, the water level in the float chamber (not shown) rises (for example, the height becomes almost equal to the upstream water level), and the gate arm 6 rotates clockwise in FIG. Moves in the opening direction), and the gate (door 7) is opened as shown in FIG. As a result, the amount of water flowing through the gate increases, and the rise of the upstream water level is suppressed. And the upstream water level drops,
When the amount of water discharged from the float chamber to the downstream side through the outlet increases, and the water level in the float chamber decreases (for example, the height becomes almost equal to the downstream water level), the float descends, and the gate arm moves in conjunction with this. 6 rotates counterclockwise in FIG. 6 (the door 7 moves in the closing direction), and the gate is closed as shown in FIG. Hereinafter, the same operation as described above is repeatedly performed to keep the water level upstream of the gate within a substantially constant range. 5 and 6, E is a channel bottom, F is a height of the main shaft 5 with respect to the channel bottom E (axial center height), G is a preset planned water level, and R is a length of the gate arm 6 (of the door body 7). (Rotation radius).

[0004]

By the way, in the automatic water level control gate weight canceling device, it is a principle that the door 7 and the counterweight 9 are set above the waterway 1 or the planned water level G in a flood. I have. For this reason, it is necessary to set the shaft center height F (the height of the main shaft 5 with respect to the water channel bottom E) to a certain degree or more. Further, in the above-described prior art, the position of the counterweight 9 is moved to set a desired water level or the like. The position of the counterweight 9 is moved by operating the adjusting bolt 8, but as described above, since the dimension of the shaft center height F is set large, the adjusting bolt 8 is accordingly higher. It is located at a location, requires high-altitude work, and requires careful safety management. If the automatic water level control gate weight canceling device is large, the installation position of the adjusting bolt 8 becomes higher by that amount, and further attention is required for safety management.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an automatic water level control gate weight canceling device capable of moving a counterweight in a low place to secure a safe moving operation. I do.

[0006]

According to the first aspect of the present invention,
An arm provided to be rotatable by a rotation center portion in the upstream and downstream directions of the water channel, a door provided at an upstream end of the arm so as to close the water channel, and a support member attached to the arm And a counter weight provided on the downstream end side of the arm so as to offset the weight on the upstream end side of the arm, so that the water level of the water channel is kept within a certain range. Sekiageru an automatic level control gate wt cancellation apparatus, the arm is separated into an upstream side gate arm and the downstream arm the rotation center portion and upstream Getoa to the separating portion
Characterized by providing the angle adjusting mechanism for adjusting the angle of the arm and the downstream arm. According to a second aspect of the present invention, in the configuration according to the first aspect, the downstream arm is provided with a rotation center side arm provided on the rotation center side and a length adjustable to the rotation center side arm. And an end-side arm portion to be connected. According to a third aspect of the present invention, in the configuration according to the first or second aspect, the upstream side
The gate arm , the support member for the float, and the downstream arm rotate directly or in the width direction of the water channel.
It is characterized in that it is connected via a possible spindle .

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An automatic water level control gate weight canceling device according to an embodiment of the present invention will be described below with reference to FIGS. Members and portions similar to those shown in FIGS. 5 and 6 are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

In FIG. 1 and FIG. 2, two bearing stands 3 and 4 are provided at the upper end (top end 2) of both side walls 1a and 1b constituting the water channel 1 [hereinafter, the upper side of FIG. 2 is referred to as a second bearing stand 4. ] Are provided opposite to each other with the water channel 1 interposed therebetween. The first and second bearing stands 3,
Main shafts (first and second main shafts) 5A and 5B extending in the width direction of the water channel 1 are rotatably supported by the shaft 4 respectively. A substantially ladder-shaped upstream gate arm 10 is fixed to the first and second main shafts 5A and 5B in the upstream direction so as to be sandwiched between the first and second main shafts 5A and 5B. 1 together with the main shaft 5 in the clockwise direction and the counterclockwise direction in FIG.

The upstream side gate arm 10 has one end (downstream side, right side in FIG. 2) connected to the first and second main shafts 5A and 5B, extends in a longitudinal shape (for example, a plate shape), and is arranged in parallel with each other. One arm body 11 and a plurality of (three in this embodiment) arm connecting members 12 that bridge the two arm bodies 11 and combine and integrate the two arm bodies 11
And, it is largely constituted from. The arm connecting member 12
One end portion of the arm body 11 and a portion sequentially spaced from the one end portion by a predetermined distance are connected to the arm body side shaft portion 13 which is perpendicularly connected to the arm body 11 and two arm body side shaft portions 13 whose both ends face each other. It is generally constituted by an intermediate shaft portion 14 to be connected to each other. Reference numeral 15 in FIG. 2 denotes a flange at which the arm body side shaft portion 13 and the intermediate shaft portion 14 are connected. In the present embodiment, the upstream side gate arm 10 has a structure that can be connected by the flange 15 as described above, and can be transported in a separated state before the connection, thereby improving the transportability. Is planned.

The upstream gate arm 10 (arm body 1)
A substantially arc-shaped door 7 is welded to the upstream end of 1) so as to close the water channel 1 and is reinforced by ribs 17. In FIG. 1, reference numeral 18 denotes a flange that indicates a joint between the upstream gate arm 10 and the door 7. In the present embodiment, the upstream side gate arm 10 and the door body 7 have a structure that can be connected by the flange 18 as described above, and can be transported in a separated state before the connection. The portability is improved. In FIG. 1, reference numeral 19 denotes a door stop provided on the side walls 1a and 1b of the water channel 1, which slides and guides the door body 7 in a liquid-tight state.

The two side walls 1a and 1 forming the water channel 1
b, a substantially U-shaped wall 20 is provided outside the side wall 1a on the left side in the flow direction (upper side in FIG. 2).
Together, they form a float chamber 21. Float room 21
In the side wall 1a of the water channel 1 corresponding to the above, holes (upstream holes, downstream holes) are formed in the upstream portion (upstream water channel of the door body 7) and the downstream portion (downstream water channel of the door body 7) of the door body 7. ) 22,
23 are formed. Upstream hole 22 and downstream hole 23
, An iron plate 25 provided with a flow port (slit) 24 on the lower side is disposed so as to be vertically movable.
4, the float chamber 21 communicates with the upstream channel of the door 7 and the downstream channel of the door 7. Iron plate 25
Is provided with a handle 26 so that a lifting operation can be performed.

The first main shaft 5A extends so as to protrude from the first bearing base 3 to the opposite side (the upper side in FIG. 2) from the water channel 1. This extension (main shaft extension) 27 of the first main shaft 5A is rotatably supported by a bearing stand (float bearing stand) 28 provided at the upper end of the wall 20 of the float chamber 21. The base end of a float arm 29 (support member) extending substantially in the axial shape is fixed to the main shaft extension 27. A suspension rod 30 is rotatably supported at the distal end of the float arm 29, and a float 31 is attached to the distal end side (the lower side in FIG. 1) of the suspension rod 30. Then, the float 31 moves up and down according to the water level of the float chamber 21, and the first and second main shafts 5A and 5B, and furthermore, the upstream gate via the suspension rod 30 and the float arm 29 according to the up and down movement of the float 31. The arm 10 and a downstream arm 32 to be described later work together.

The first and second main shafts 5A and 5B are respectively provided with arms 32a and 32b (hereinafter referred to as upper and lower arms in FIG. 1, second downstream arms 32a and 32b, and collectively referred to as downstream arm 32). The angle adjusting mechanism 33 includes the angle adjusting flange 3.
4 by rotating the first and second spindles 5A, 5A,
The angle formed between 5B (therefore, the upstream gate arm 10) and the downstream arm 32 is adjusted. In the present embodiment, as shown in FIGS. 3 and 4, the angle of the downstream arm 32 is adjusted such that the downstream arm 32 is inclined upward by an angle θ with respect to the upstream gate arm 10. Downstream arm 32
Is provided with a rotation center side arm 35 provided on the first and second main shafts 5A and 5B (rotation center portion) side, and a telescopic bolt 36 (length adjustment mechanism) mounted on the rotation center side arm 35. And an end-side arm portion 37 that is connected via a cable. The length of the downstream arm 32 can be adjusted by a telescopic bolt 36.

At the downstream end of the end arm 37 of the first downstream arm 32a and the downstream end of the end arm 37 of the second downstream arm 32b, a counterweight 9 extending in a longitudinal direction is provided. The upstream gate arm 1
The weight on the upstream end of zero is offset.

In FIG. 1, reference numeral 38 denotes a gate pulling device.
The gate pulling device 38 rotates the pulling device shaft 39 provided across the water channel 1, a wire 40 connecting the pulling device shaft 39 and the upstream gate arm 10, and the pulling device shaft 39. It is roughly composed of a rotating operation unit (not shown).

In the automatic water level control gate weight canceling device constructed as described above, upstream water is closed by the door 7 with the gate (door 7) closed as shown in FIG. The water level rises. Then, the water level in the float chamber 21 rises and the float 31 rises, and in conjunction with this, the upstream gate arm 10 (the first and second main shafts 5A and 5B).
3 rotates clockwise in FIG. 3 (the door 7 moves in the opening direction), and the gate (door 7) is opened as shown in FIG. As a result, the amount of water flowing through the gate increases, and the rise of the upstream water level is suppressed. Then, when the upstream water level decreases, the amount of water discharged from the float chamber 21 to the downstream side increases, and the water level in the float chamber 21 decreases, the float 31 descends,
In conjunction with this, the float arm 29 and thus the upstream gate arm 10 rotate counterclockwise in FIG. 4 (the door 7 moves in the closing direction), and the gate (the door 7) is closed as shown in FIG. . Hereinafter, the same operation as that described above is repeatedly performed so that the water level upstream of the gate (door 7) is kept within a substantially constant range.

In this device, for example, during a flood,
The upstream gate arm 10 is rotated clockwise, and the gate (door 7) is fully opened as shown in FIG.
At this time, since the downstream arm 32 is angle-adjusted so as to be inclined upward by the angle θ with respect to the upstream gate arm 10, the door 7 and the counterweight 9 become above the water channel 1 or the planned water level G or more. This can be achieved by reducing the dimension of the shaft center height F.

The position adjustment of the counterweight 9 is as follows.
This can be achieved by adjusting the length of the telescopic bolt 36 or operating the angle adjusting mechanism 33. However, as described above, by reducing the dimension of the shaft center height F, the telescopic bolt 36
In addition, the number of operating points (working points) of the angle adjusting mechanism 33 is reduced, so that workability and safety can be improved. Also,
Even if it is a large-sized device, the operation places (work places) of the expansion and contraction bolts 36 and the angle adjustment mechanism 33 are reduced, and workability and safety are improved. Will be higher. Further, by reducing the dimension of the shaft center height F as described above, the length of the upstream gate arm 10 (the turning radius R of the door body 7) can be shortened, and the entire apparatus can be made compact. .

Further, according to the present embodiment, while the length of the downstream arm 32 in the axial direction is adjusted by the telescopic bolt 36, the rotation of the downstream arm 32 about the main shaft 5 by the angle adjusting mechanism 33. Since the position in the direction is adjusted, the position of the counterweight 9 in the X and Y directions (X:
The flow direction of the water channel 1 (Y: vertical direction) can be adjusted over a wide range.

In the above embodiment, an example is described in which the upstream gate arm 10, the downstream arm 32 and the float arm 29 are connected via the main shaft 5 (first and second main shafts 5A and 5B). Instead of this, the upstream gate arm 10, the downstream arm 32 and the float arm 29 are directly connected (the upstream gate arm 10 and the downstream arm 32 are connected via an angle adjusting mechanism 33). The members connected as described above may be configured to be rotatably supported on a shaft provided so as to cross the water channel 1.

[0021]

According to the first aspect of the present invention, it is possible to adjust the angle of the downstream arm so as to be inclined upward by a predetermined angle with respect to the upstream gate arm by the angle adjusting mechanism. Gate (door) by configuring
It is possible to reduce the size of the shaft center height so that the door body and the counterweight become higher than the planned water level on the waterway when the door is fully opened. On the other hand, the position of the counterweight can be adjusted by operating the angle adjustment mechanism. As described above, by reducing the dimension of the shaft center height, the operation position (operation position) of the angle adjustment mechanism is reduced, and workability and Safety can be improved.

According to the second aspect of the present invention, the downstream side arm is provided on the rotation center side and the end connected to the rotation center side so as to be adjustable in length. And the length of the downstream arm, and thus the position of the counter, can be achieved by adjusting the length of the downstream arm. By reducing the dimension of the shaft center height as described above, the downstream arm The length adjustment location (work location) is reduced, and workability and safety can be improved. The position of the counter can be achieved by adjusting the length of the downstream arm, so that the position of the counter can be adjusted over a wider range. According to the third aspect of the present invention, the upstream gate arm, the float support member, and the downstream arm are connected directly or via a rotatable main shaft extending in the width direction of the water channel. Therefore, the selection range of the connection state of the upstream gate arm , the support member for the float, and the downstream arm is widened.

[Brief description of the drawings]

FIG. 1 is a side sectional view schematically showing an automatic water level control gate weight offset device according to an embodiment of the present invention.

FIG. 2 is a plan view of the apparatus of FIG.

FIG. 3 is a side sectional view schematically showing a state of the apparatus of FIG. 1 in a fully closed state.

FIG. 4 is a side sectional view schematically showing a state of the apparatus of FIG. 1 when fully opened.

FIG. 5 is a side sectional view schematically showing a state of the related art when fully closed.

FIG. 6 is a side sectional view schematically showing a state of the related art when fully opened.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Water channel 10 Upstream gate arm (arm) 32 Downstream arm (arm) 33 Angle adjustment mechanism 35 Rotation center side arm part 37 End side arm part

Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E02B 7/42 E02B 7/20

Claims (3)

(57) [Claims] 1. A central portion pivoted in an upstream / downstream direction of a water channel.
An arm provided rotatably by the arm, a door body provided at an upstream end of the arm so as to close the water channel, a float held at a tip side of a support member attached to the arm, and the arm A counterweight provided at the downstream end of the arm so as to offset the weight at the upstream end of the arm, and an automatic water level control gate weight offsetting device for closing the water level of the water channel so as to fall within a certain range. Te, the arm is separated into an upstream side gate arm及<br/> beauty downstream arm the rotation center portion and the upstream side in the separation portion
An automatic water level control gate weight offset device comprising an angle adjusting mechanism for adjusting an angle between a gate arm and a downstream arm. 2. The downstream arm comprises a rotation center side arm provided on the rotation center side and an end arm connected to the rotation center side arm so as to be adjustable in length. The automatic water level control gate weight offset device according to claim 1, wherein: 3. An upstream gate arm, a float support member, and the downstream arm are connected directly or via a rotatable main shaft extending in the width direction of the water channel. The automatic water level control gate weight offset device according to claim 1 or 2.