JPH0439522B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a water intake device that can selectively take water from a water layer at any depth when taking irrigation water from a dam, reservoir, etc. It is something.

[Conventional technology]

As a conventional technique, there is a technique described in Japanese Utility Model Publication No. 16661/1983.

This prior art is as shown in FIGS. 13 to 16.

That is, in these figures, 1 is a water intake section provided at the front of the dam body 2, and there are vertical door grooves 3 on both sides of the intake section.
is formed. In the door groove 3, facing the water guide surface of the water intake part 1, a lifting beam 4 and a plurality of door bodies 5 are connected in a row along the vertical direction via hanging rods 6 and 7, respectively. It is suspended by a wire rope 9 that is hung on a pulley 8 at the upper end of the holder so that it can be raised and lowered.

The upper end of the wire rope 9 is connected to a hoisting crosspiece 11 of a pedestal 10 installed horizontally on the upper part of the dam body 2, and by operating this hoisting crosspiece 11, the beam 4 and the door body 5 are sequentially lifted. The lifted beam 4 and door body 5 are connected vertically to form an opening 0 of a size corresponding to the length of the hanging rods 6 and 7 between the adjacent door bodies.

As shown in FIGS. 14 and 15, the beam 4 is made of a rectangular hollow body, and is telescopically connected to the uppermost door body 5 by a hanging rod 6 having engaging protrusions 12 at both ends. Each door body 5 consists of a rectangular box body with an open back side opposite to the water guiding surface, and the hanging rod 6
They are each connected telescopically by a hanging rod 7 which is shorter and similarly provided with engaging protrusions 13 at both ends. Reference numeral 14 denotes a water conduit pipe provided at the lower part of the dam body 2 so as to communicate with a water intake shaft 15 formed in the water intake portion 1 .

In the case of this prior art, when the water level of the dam is low and water is not being taken in, the door body 5 stores the hanging rods 7 inside and their upper and lower ends abut against each other to stop water, as shown in FIG. If the water level rises from now on, the 16th
The surface water intake state is shown in Figure a. In other words, if each door body 5 is left as is and only the beam 4 is lifted and the hanging rod 6 is extended to its maximum length, an opening O ₁ is formed between the beam 4 and the uppermost door body 5, so that surface water The water enters the shaft 15 through the opening O ₁ , flows further down the shaft 15 , and is led through the water pipe 14 .

Next, when you want to take water mainly from the middle water layer,
The wire rope 9 is hoisted by the hoisting machine 11 to lift the beam 4 and the top door body 5, and the hanging rod 7 is stretched to its maximum length between this door body 5 and the second door body 5 to open the opening. To form O ₂ and take water from this opening O ₂ to ensure water flow (see figure b), and to take water from the intermediate water layer deeper than this, further,
The 2nd and 3rd stage door bodies are beam 4 and the top stage door body 5.
Lift together and create a similar opening between each door body.
O ₃ and O ₄ are formed, and the water is taken in from the lowermost opening of these openings by utilizing the difference in water density to ensure water flow (Figures c and d).

In order to take water from the lowest water layer, the wire rope 9 is further wound up to lift the beam 4 and the door body 5, and the hanging rods 6 and 7 of the beam 4 and the door body are all extended to their maximum lengths, and the bottom door body 5 and An opening is formed between the shaft and the bottom of the shaft, and water is taken from this opening.

[Problem that the invention seeks to solve]

In the case of the above-mentioned conventional technology, surface water intake with a large water intake depth is impossible. That is, in FIG.
To increase the surface water intake depth H, each door body 5
It would be better to increase the height and lengthen the hanging rods 6 and 7, but this would limit the position of the water intake layer. On the other hand, if the water intake position can be determined as precisely and arbitrarily as possible, the water intake depth will become smaller.

Furthermore, as is clear from FIG. 16, there are multiple openings during intermediate water intake, and it is difficult to effectively intake 100% of the water from any one opening.

This invention has been made in view of the above-mentioned problems, and provides a selective water intake device in which a lifting beam can be freely connected to and separated from any door body, and an appropriate water intake layer and water intake depth can be freely selected. It is.

[Means for solving problems]

In order to solve the above problems, the present invention arranges a plurality of door bodies in a row along the vertical direction of a water intake section, and also provides a hoisting system in which the lowest door body is hoisted together with the upper door body. A device is provided, and a lifting beam that can be raised and lowered by another hoisting device is provided so as to be able to move up and down along the door body, and lift the other door bodies other than the lowest door body. The beam-side surface and the surface of the lifting beam facing the door body have two surfaces: a case where the door body is raised together with the lifting beam by engaging the desired door body by vertical operation of the lifting beam, and a case where the door body is raised together with the lifting beam. A locking/disengaging means is provided which can be freely switched when separating the lifting beam.

[Effect]

Since the device of the present invention has the above-mentioned configuration, in the case of surface water intake, a plurality of door bodies are sequentially stacked above the lowest door body, and the entire door body is lowered by the lowermost door hoist. By locating the upper end of the uppermost door body below the water surface, surface water intake can be performed at an appropriate water intake depth.

In addition, if the water level drops and the entire door cannot be lowered, lower the lifting beam and
Surface water intake becomes possible by combining the uppermost door and lifting beam and raising the uppermost door together with the lifting beam above the water surface. In this case as well, the water intake depth is changed by the lowermost door hoist.

On the other hand, when intermediate water intake is required, the door body of a predetermined stage and the lifting beam are combined and the lifting beam is raised, or the door body is lowered by the hoisting machine for the lowest stage door body. One opening is formed at the position, and water can be taken in from the opening at a desired water depth, and the water intake depth can be freely selected.

〔Example〕

In Figures 1 to 3, reference numeral 21 is the water intake section, and behind it, that is, to the right in Figure 1, is the dam, but since these parts are the same as the conventional example in Figure 13, they are not shown. There is.

A pair of vertically oriented front and rear door grooves 22 and 23 are formed on both sides of the water intake portion 21 . Both sides of a plurality of door bodies 24 are fitted into the front door groove 22 so as to be able to rise and fall, and both ends of a lifting beam 25 are fitted into the rear door groove 23 so as to be able to rise and fall.

Although not shown, door grooves 22 and 2 are provided on both sides of each door body 24 and lifting beam 25.
3. Install rollers and seals for watertightness.

The lower ends of wire ropes 26 are connected to the support pieces provided outward on both sides of the lowermost door body 24, and both wire ropes 26 are hoisted by a hoisting machine 28 installed on a frame 27 on the dam body. The door body 24 at the lowest stage is moved up and down. Also,
A fixed wall 29 is provided at the front of the lower end of the water intake section 21 .

Wire ropes 30 are attached to supporting pieces facing outward at both lower ends of the lifting beam 25, respectively.
The lower ends of the two wire ropes 30 are connected, and both wire ropes 30 are wound up by a winding machine 31 installed on the frame 27, so that only the lifting beam 25 can be raised and lowered.

Further, the distance between the two wire ropes 30 is set to be larger than the width of the door body 24.

A pair of left and right guide rails 32 in the front and back direction are provided at the bottom of the pedestal 27.
An electric hoist 33 is attached to each of the doors 2, and a pair of hanging rings 36 with which the hooks 35 of each hoist 33 engage are provided at the upper end of each door body 24 other than the lowest stage.

Furthermore, a rest stand 34 for the lifted door body 24 is provided below the pedestal 27.

4 to 7 show details of the engaging and disengaging means.

This locking/disengaging means includes a pair of left and right receiving pieces 38 fixed near the upper part of the rear surface of the door body 24, and a lever 3 provided below the receiving pieces 38 at the center of the rear surface of the door body 24.
9, a claw lever 40 provided at the center of the upper front surface of the lifting beam 25, a claw wheel 41 provided at the bottom thereof, and a pair of left and right engagement pieces provided on both sides thereof to rotate together with the claw wheel 41. 42.

The upper surface of the receiving piece 38 has a slope 45 as shown in FIG.
The lever 39 is rotatable about a shaft 46 attached to the bracket of the door body 24, but a stopper 47 prevents it from rotating below horizontal.

Claw-equipped lever 40 of the lifting beam 25
rotates around a shaft 48 attached to the bracket of the beam 25, and is prevented from rotating below horizontal by a stopper 49, and furthermore, a claw 50 is integrally provided on the lower side.

The ratchet wheel 41 is integrally fixed to a horizontal shaft 52 rotatably attached to a bracket provided on the lifting beam 25, and the engaging pieces 42 are also fixed to both ends of the shaft 52.

Further, a pawl 50 of the lever 40 is provided on the outer periphery of the pawl wheel 41.
A claw 53 for engaging and disengaging is provided on the lower surface of the engaging piece 42, and a slope 54 as shown in FIG. .

FIG. 8 explains the operation of connecting the lifting beam 25 and the door body 24.

When the engaging piece 42 of the lifting beam 25 that has descended as shown in FIG. It descends while rotating upward like this.

When the engaging piece 42 rotates upward, the ratchet wheel 41 also rotates via the shaft 52, and its pawl 53 engages with the pawl 50 of the pawl lever 40.

Therefore, as shown in c, the claw lever 40 and the engaging piece 42
Even if it is below the receiving piece 38, the claws 50 and 53 remain engaged and remain oriented upward.

When the lifting beam 25 further descends and the tip of the claw lever 40 comes into contact with the lever 39 of the door body 24 as shown in d, the claw lever 40 rotates upward and the claw 50 is disengaged from the claw 53, so that the engagement is completed. Piece 42
returns to horizontal due to its own weight (Fig. 8e).

In this way, the horizontal engaging piece 42 is connected to the lever 39 of the upper door body 24 and the receiving piece 38 of the lower door body 24.
When the lifting beam 25 is raised from the position shown in FIG.
Turn the lever 39 of 4 upward and pass through the engaging piece 4.
2 engages with the lower part of the receiving piece 38 of the door body 24 as shown in g to connect the lifting beam 25 and the door body 24 and raise the door body 24 as shown in h.

That is, the lifting beam 2 is moved until the claw lever 40 and the engagement piece 42 are located between the lever 39 of the upper door body 24 and the receiving piece 38 of the lower door body 24.
5 is lowered and then raised, the upper door body 24 can be raised.

Figure 9 shows the lifting beam 25 from the door body 24.
This figure shows the operation of separating the door body 24 from the lower door body 24, which has been lowered by combining with the lifting beam 25 as shown in a of the figure, rests on the lower door body 24 as shown in b, and then lifts again Teing beam 25
When the lever 40 is lowered, as shown in c to f, the engaging piece 42 is first separated from the receiving piece 38 of the upper door body 24, and the claw lever 40 is rotated upward by the lever 39.
The engaging piece 4 passes through this lever 39, becomes horizontal below it, and then attaches to the receiving piece 38 of the lower door body 24.
2 contact and rotate upward, and the pawl 53 of the ratchet wheel 41 is locked by the pawl 50 of the pawl lever 40, thereby holding the locking piece 42 upward.

If the lifting beam 25 is raised in this state, the engagement piece 42 will rise while facing upward, so the g
Even if the claw lever 40 passes through without engaging the receiving piece 38 of the lower door body 24 as shown in FIG. Since it is only turned upward, the claws 53 and 50 do not become unlatched, and therefore the engaging piece 42 remains held upward and does not engage with the receiving piece 38 of the upper door body 24. going up.

The lowermost door body 24 is operated by the wire rope 26 shown in FIGS. 1 and 2, so it has no relation to the lifting beam 25. However, the lifting beam 2 is attached to the receiving piece 38 of the second door body 24 from the bottom.
When the engagement piece 42 of No. 5 is engaged, it cannot be removed unless the engagement piece 42 is turned upward with the receiving piece 38 of the lowest door body 24.
Only 8 is required.

FIG. 10 shows a case where the water level decreases from left to right at a to h when surface water intake is performed using the above-mentioned engagement and disengagement means.

Normally, at the water level _H0 , all the door bodies 24 are brought into close contact with each other, and the lowermost door body 24 is lifted up by a rope 26 to such an extent that the lower end thereof slightly overlaps the upper edge of the fixed wall 29 at the bottom of the water.

As the water level decreases under the above conditions, the hoisting bar 2
When the rope 26 is loosened by step 8 and the entire door body 24 is lowered as shown in b and c, the water level will be lowered.
They become H ₁ and H ₂ .

If the water level further drops to _H3 as shown in d with all the door bodies 24 at the lowest position as shown in c, surface water intake cannot be carried out as it is.

At this time, the hoisting beam 31 is operated to loosen the rope 30, the lifting beam 25 is lowered and connected to the uppermost door body 24, and the uppermost door body 24 is lifted as shown in e. Surface water intake is performed by slightly raising the remaining door body 24 using the hoisting crosspiece 28.

In this way, surface water is taken in by the remaining door body 24 at the bottom, and as the water level decreases, the remaining door body 24 at the bottom is lowered as shown in f and g, and when the water level falls further, the lifting beam 25 is lowered again and raised. Lift up the second stage door body 24 from above.

By repeating the above operations, surface water intake can be performed until only the bottom door body 24 is removed as shown in i.

Further, the door body 24 lifted by the lifting beam 25 as described above is suspended by the engagement of the hook 35 of the electric hoist 33 and the hanging ring 36 at the upper limit position, and the lifting beam 25 detached from the door body 24 is In the lowered state, the hoist 33 is moved and placed on the suspension stand 34 so that the next lifting of the door body 24 will not be hindered.

FIG. 11 shows the operation for performing surface water intake in the process where the water level is rising from the state in which all the door bodies 24 except the lowest door body 24 are placed on the rest stand 34 by the above operation.

Until the water level rises from the lowest level to the H ₀ position in a of FIG. 11, the lowest door body 24 is gradually raised by operating only the rope 26 using the hoisting crosspiece 28.

If the water level rises further, as shown in a, the lifting beam 25 is lowered to a position where it does not interfere with the movement of the door body 24, and then the electric hoist 33 is used to lift the frontmost door body 24 on the suspension platform 34 to a predetermined position. The lifting beam 25 raised as shown in b is connected to the door body 24, and the door body 24 removed from the electric hoist 33 is lowered and placed on the lowest door body 24 as shown in c. Afterwards, the lifting beam 25 is removed from the door body 24 and raised.

By repeating the above steps, surface water intake is performed according to the rise in water level as shown in d, e, and f.

FIG. 12 shows selective water intake, and a and b are surface water intakes, and the amount of surface water can be adjusted by operating only the hoisting bar 28.

Also, by lowering the lifting beam 25,
The lifting beam 25 is coupled to any other door body 24 other than the lowest door body 24, and the combined door body 24 and the door bodies 24 above it are appropriately raised, or the combined state is , and by stopping the lifting beam 25 at that position and lowering the lowest door body 24,
Intermediate water intake can be performed at any depth of water intake layer such as d, f, h, and i, and at any water intake depth H.

Although the above embodiment has been explained using four door bodies, it goes without saying that the number and size of the door bodies can be changed freely, such as by placing a spare door body on the rest stand. do not have.

〔effect〕

As described above, the present invention is such that the lowermost door body can be freely raised and lowered by the hoisting device, and the plurality of door bodies above it can be moved up and down by being placed on the lowermost door body. Since the hoisting device is connected to a lifting beam that goes up and down using a hoisting device separate from the hoisting device, it can be raised and lowered, so all the door bodies can be raised and lowered according to changes in the water level, and the upper door can be lifted. By connecting it to a beam and raising or lowering it, surface water intake can be performed at any water level.

In addition, since the lifting beam can be combined with and separated from all the door bodies other than the lowest one, it can be combined with any door body and raised as desired. Only one opening of any size (intake depth) can be provided in the middle water intake layer, and from this one opening only 100
% effective selective water intake.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional side view showing one embodiment of the device of the present invention, Fig. 2 is a longitudinal sectional front view of the same as above, Fig. 3 is a transverse plan view of the same, and Fig. 4 is an enlarged side view showing the main parts of the door body. , Figure 5 is a back view of the same as above, Figure 6 is an enlarged front view showing the main parts of the lifting beam, Figure 7 is a side view of the same as above, Figures 8 a to h are the combination of the door body and lifting beam. Figures 9a to 9g are side views showing the withdrawal order, Figures 10a to i are side views showing various states when the water level drops in surface water intake, and Figures 11a to g are surface views. Fig. 12 a to i are side views of each state during water intake when the water level rises, Fig. 13 is a vertical side view showing an example of a conventional selective water intake device, and Fig. 14 is a side view of each state during selective water intake. FIG. 15 is a partially longitudinal side view enlarging the essential parts of the same as above, FIG. 15 is a partially longitudinal front view, and FIGS. 16 a to 16 d are longitudinal side views illustrating the operation. 21... Water intake section, 24... Door body, 25... Lifting beam, 28, 31... Hoisting machine, 38...
...Socket piece, 39...Lever, 40...Lever with claw,
41...Rawl wheel, 42...Engagement piece, 47, 49, 5
5... Stoppa, 50, 53... Nail.

Claims (1)

[Claims] 1. Multiple stages of door bodies are arranged along the vertical direction of the water intake section.
They are arranged in rows and are provided with a hoisting device that lifts the lowermost door body together with the upper door body, and are lifted up and down by another hoisting device so that they can move up and down along the door body. A lifting beam of A selection characterized in that an engaging/disengaging means is provided that can be freely switched between engaging with the door body to raise the door body together with the lifting beam and separating the lifting beam from the door body. Water intake device. 2. The above-mentioned locking/disengaging means has a receiving piece fixed to the surface facing the lifting beam of each door body, and other door bodies except the lowest door body, which are laterally positioned at different positions below the receiving piece. In addition, there is a lever mounted so that it can rotate only upwards from the horizontal position, and a position on the side of the door body of the lifting beam that can rotate only upwards from the horizontal position and makes contact with the receiving piece of the door body. a lever with a claw attached to the lever, a claw wheel attached to the lower part of the lever with a claw so as to rotate with the horizontal shaft, and a lever fixed to the horizontal shaft,
An engaging piece that can rotate only upwards from a horizontal state and is positioned in contact with the receiving piece of the door body, and when this engaging piece contacts the receiving piece of the door body from above and turns upward. , a pawl provided on a part of the outer periphery of the ratchet wheel so as to engage with the lower pawl of the pawl lever in a horizontal state and hold the engagement piece upward. The selective water intake device according to item 1.