JP2907327B2 - Automatic falling weir - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic overturning weir, and more particularly, to an automatic overturning weir that overturns and discharges when a predetermined water level is reached.

[0002]

2. Description of the Related Art Conventionally, a technique disclosed in Japanese Utility Model Publication No. 7-14416 developed by the present applicant as an automatic overturning weir is known. This overturning weir rotatably supports a water stop (weir) of an area that constitutes a part or the whole of the transverse weir, and the upper water stop pressure and the lower water stop pressure are applied to the water stop over the shaft support. A balancer for equilibrating is provided, so that when the water stoppage pressure increases, the balance is lost and the water stopping body falls and can be discharged. This automatic weir is provided at appropriate intervals, and while the downstream riverbed sediment is involved by the flash effect, both suspended suspended solids and discarded substances are transported to the main stream with a large amount of water, and the entire tributary river is integrated. If the water level is kept constant at all times with clean water for agriculture or park water, etc. In addition, it can be equally applied to creating a fishway that allows fish to go up by providing them continuously (combination of the same standard or combination of large and small weirs).

[0003]

However, since the balance of the overturning weir is limited to the balancer only, when the water level near the overturning water is increased and the water pressure on the weir increases, the water stopping body may be overturned by a slight vibration or wave of water. Rocks. If the balance is unstable as described above, not only does the original function of a weir that does not discharge water while maintaining a fixed state up to a predetermined water stop level, but also the landscape becomes unsightly due to the grazing near the falling water level.

SUMMARY OF THE INVENTION The present invention has been made in view of the conventional circumstances, and an object thereof is to provide an automatic overturning weir (river purifying apparatus) having a simple structure capable of maintaining a fixed state firmly to a predetermined water stopping level. It is in.

[0005]

The technical means taken to achieve the above object is a main means which is rotatably supported at a desired height portion and constitutes a part or all of a crossing weir portion of a river. A float type weir having an open upper surface is fitted into the weir so as to be able to move up and down, and a balancer for raising the main weir is provided, and a water inlet for generating buoyancy in the float type weir is faced upstream. The float type weir is engaged with the support between the float type weir and the support of the main weir when the float type weir rises to a predetermined water stop volume. A lock mechanism for locking the float and releasing the lock when the float type weir body descends due to the inflow of water from the opening portion, and prevents the lower end of the main weir body from rotating downstream in the lower part of the main weir body. The gist is that the projection is fixed.

According to the above technical means, the following effects are obtained. When the water level is equal to or less than the predetermined water stop volume, the float type weir body rises by receiving the buoyancy of water and forms a lock mechanism with the support of the main weir body. Since the lower end of the main weir body collides with the protrusion and is prevented from rotating in the downstream direction, the main weir body is held in an upright fixed state while supporting the float type weir body, and is cooperated with the float type weir body. stop. In addition, even if the water level rises above the predetermined water stop level due to rainfall or the like, the float type weir is not locked because it is locked, and instead, water flows into the float type weir and descends, and the lock mechanism is naturally activated. To release. Then, the main dam body naturally falls down and releases the water that has been dammed. Then, when the water stop pressure higher than the shaft support portion becomes lower, the main weir body is again erected by the balancer, and the float type weir body, which rises due to the buoyancy of the water flowing from the water inlet part, is engaged again to constitute a lock mechanism. Then, the main weir body is kept in the upright fixed state again, and keeps the upright fixed state up to the predetermined water stopping level.

[0007]

Next, an embodiment of the present invention will be described with reference to the drawings. 1 to 4 show an embodiment of the automatic overturning weir of the present invention. Symbol A is an automatic falling weir.

An automatic overturning weir A shows a case where a crossing weir is provided laterally on a river, and a main weir 1 rotatably supported on a support 100 and vertically movable on the main weir 1. A float-type weir 2 inserted into the main weir, and a rising balancer 3 provided on the main weir 1;
A water inlet 4 for generating buoyancy in the float type weir 2,
The float type weir 2 is engaged between the float type weir 2 and the support 100 of the main weir 1 when the water rises to a predetermined water stopping level, and the float type weir is locked and flows into the water. 2 and a lock mechanism 5 for unlocking the main weir 1
A projection 6 for preventing the lower end from rotating in the downstream direction.

The support 100 has an upright U-shape in front view in which the lower ends of left and right vertical rods 101, which are erected at a distance between the seawalls B, B, are connected by a horizontal rod 102. On the revetment B, the horizontal rod 102 is fixed to the floor plate 200 mounted on the river bottom C, and is installed between the revetment B, B.

The main weir 1 includes a rectangular closing plate 11 having an area for closing the front portions of the vertical rods 101 from the lower side to a predetermined height from a lower side, excluding an upper edge, and a side plate 21 on an upstream side (backward direction). The bottom plate 31 is integrally bent, and the side plate 21 and the bottom plate 31 are formed by bending a bent plate 41 inward from the tip of the bottom plate 31 in parallel with the closing plate 11. , The bottom plate 31 and the bent plate 41 constitute a guide portion 7 for vertically moving the float type weir 2.
The main weir 1 is rotatably supported by pivotally supporting the lower regions of the side plates 21 and 21 on the corresponding vertical rod 101 of the support 100, and protrudes from the horizontal rod 102 when standing. The front surface of the lower end abuts the projected portion 6 and the bent plate 41 portion abuts on the L-shaped member 103 vertically provided on the vertical rod 101,
The lower end is prevented from rotating in the downstream direction.

The main weir 1 is provided with a rising balancer 3 on a bottom plate 31 thereof.

The float type weir 2 has a container shape with an open upper surface, and is inserted into the guide portion 7 so as to be vertically movable.

The water inlet 4 for generating buoyancy in the float type weir 2 is a step provided at both lower side ends of the float type weir 2 facing upstream as shown in the figure. When the buoyancy is generated in the portion, the float type weir 2 is guided by the guide portion 7 and lifted. Note that, as described above, the guide portion 7 is formed without forming the water inlet portion 4 positively.
A simple structure in which the float type weir 2 rises using water flowing between the bottom of the float type weir 2 and the bottom surface of the float type weir 2 may be used.

The lock mechanism 5 includes a vertical rod 101 of the support 100.
And a stopper 15 protruding from an open edge portion on both side surfaces of the float type weir body 2.
15 and a projection 25 engaging with the projection 15. The stopper 15 is an L-shaped member and is mounted and fixed horizontally.

When the float type weir body 2 receives the buoyancy of water and rises, the lock mechanism 5 naturally engages with the upstream end of the stopper 15 to maintain the locked state at a predetermined water stopping level. Then, when the float type weir body 2 descends, the engagement is naturally released. In detail, this projection 25
Is engaged with the upstream end of the stopper 15, as shown in the drawing, to stop the float weir 2 from rising further and to prevent the float weir 2 from falling down. Inclined piece 25a with just the right angle to demonstrate engagement
have.

The rising balancer 3 raises the main weir body 1 again when the water stop pressure higher than the shaft support part becomes lower after discharge, and the float type weir body 2 rises due to the buoyancy of the water and locks. The weight is set to such an extent that the main weir body 1 is maintained in an upright state until the condition is satisfied.

Reference numeral 8 denotes a closing plate 11 in the main weir 1.
Of the float type weir 2 at the time of overturn, and the float type weir 2 collides with the main weir 1
To prevent them from getting lost and lost.

In the automatic overturning weir A of the present embodiment configured as described above, the float type weir body 2 receives the buoyancy of the water flowing from the water inlet 4 as shown in FIGS. As a result, the inclined piece 25a of the projection 25 engages with the upstream end of the stopper 15 to maintain the locked state, and does not rise any further and does not fall in the downstream direction. When the water level rises above the predetermined water stop level due to rainfall or the like, 2 in FIG.
Float type weir 2 over rear surface 12 as shown by the dotted line
When the water flows into the inside, the float type weir body 2 descends and automatically releases the lock (in the present embodiment, the lock mechanism 5 is set to an engagement relationship that requires a descending of about 15 mm until the lock is released. (See FIG. 3). Then, as shown by a two-dot chain line in FIG. 3, the balance relationship with the balancer 3 is broken, and the main dam body 1 falls around the pivot portion and is discharged. At this time,
Water in the float type weir body 2 is also discharged. When the water stop pressure becomes higher than that of the shaft support, the main weir 1 having the float type weir 2 is again erected by the balancer 3 and the water inlet 4
The protrusion 25 of the float type weir 2 which rises by receiving the buoyancy of the water flowing in from the stopper engages with the stopper 15 to lock the lock mechanism 5.
To hold the main weir body 1 in a fixed state in which it is erected again,
The main dam 1 and the float dam 2 cooperate to stop up to a predetermined water stop level.

As described above, in this embodiment, the float type weir body 2 locks and holds the main weir body 1 firmly in a fixed state unless the water level exceeds the predetermined water stop level. When the float type weir body 2 descends due to the weight of the flowing water, an automatic overturning weir A is automatically overturned and discharged.

Although not shown, the lock mechanism 5 controls the rise of the float type weir 2 to a predetermined water stopping level by bringing the open edge of the float type weir 2 into contact with the lower surface of the stopper 15. It is also possible to prevent the float type weir 2 from falling over by bringing the rising piece of the projection 25 (a vertical rising piece provided in place of the inclined piece) into contact with the upstream end face of the stopper 15. Yes, lock mechanism 5
May be constituted by a stopper 15 fixed in a downwardly inclined shape toward the downstream side and a float type weir 2 whose open edge abuts against the inclined lower surface of the stopper 15.

Although not shown, a concave notch is continuously provided on the upper edge of the float type weir 2 and the upper edge of the closing plate 11 of the main dam 1, so that the concave notch of the float type weir 2 is The weir structure may be such that the obstruction is closed by a U-shaped communication passage that is upwardly visible, and always overflows from the recessed portion of the main dam body 1 by an appropriate amount through the communication passage to a predetermined water stop level. Further, the communication passage may be used also as the detachment prevention body 8. In this case, a guide concave portion (not shown) of the detachment prevention body 8 is provided in the float type weir 2 corresponding to the detachment prevention body 8 in the float type weir 2 from an open edge, and the guide concave portion (not shown) is provided. Until the float type weir 2 rises under the buoyancy of water and forms a lock mechanism 5 with the support 100 of the main weir 1, the bottom of the concave portion is removed by the stopper 8. The depth is set so that it does not engage.

Since the present invention is constructed as described above, it does not overturn or swing due to slight water vibration or wave motion near the overturning water level, and is firmly fixed to a predetermined water stopping level bulk. And an automatic overturning weir that immediately falls over and discharges as soon as the water level exceeds a predetermined water stop level. In addition, since the float type weir body which rises by the buoyancy of water and descends by the weight of the water flowing into the inside performs locking and unlocking, for example, sensor means for detecting the water stop level, such means as As a large-scale weir equipped with a control means linked to the control means and a drive means for opening and closing the floodgate in cooperation with the control means, the operation is reliable without troublesome maintenance management or an increase in the degree of failure. An automatic falling weir can be provided at very low cost.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of an operating state viewed from an upstream side.

FIG. 2 is a sectional view taken along the line (2)-(2) of FIG.

FIG. 3 is a sectional view taken along the line (2)-(2) of FIG. 1 and shows a state in which water has flown into a float type weir body when the water level exceeds a predetermined water stop level and the lock is released.

FIG. 4 is an exploded perspective view showing the relationship between a support, a main dam, and a float dam.

[Explanation of symbols]

 1: Main weir body 2: Float type weir body 3: Balancer 4: Water entry part 100: Support body 5: Lock mechanism 6: Projection A: Automatic falling weir B: Seawall 101: Vertical rod 102: Horizontal rod 7: Guide part 15: Stopper 25: Projection

Claims (1)

(57) [Claims] 1. A main weir body that is rotatable around a desired height portion and is rotatable and constitutes a part or all of a transverse weir portion of a river.
A float type weir body having an open upper surface is vertically movably fitted, a balancer for rising is provided in the main weir body, and a water inlet for generating buoyancy in the float type weir body is provided facing the upstream side. Between the float type weir and the support of the main weir engage with the support when the float type weir rises to a predetermined water-stop volume and lock the float type weir, and A lock mechanism is provided to release the lock when the float type weir body descends due to the inflow of water from the open part, and a protruding part that prevents the lower end of the main weir body from rotating downstream is fixed below the main weir body. An automatic overturning weir characterized by being installed.