JPH0415785Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an overturning weir in which a weir plate installed in a waterway can be overturned as necessary to release water stored in the waterway.

(Background technology) The base of the weir plate is pivotally attached to the bottom of the waterway, and the upper end of the weir plate is connected to a wire fed out from a hoisting device installed on the embankment, and the weir plate is suspended by this wire.
An overturning weir has been put into practical use that is supported in an upright position, and in the event of a temporary increase in water due to heavy rain, etc., the weir plate can be collapsed to release the water stored in the canal. There is. This type of overturning weir is constructed by attaching a handle to the hoisting device and winding up the wire suspending the weir plate around a pulley provided on the rotating shaft for wire hoisting, thereby raising the weir plate that has fallen down. The configuration is common. By the way, since the weir board in the collapsed state is parallel to the waterway and the water pressure of running water is applied, a great deal of labor was required especially at the start of hoisting. In recent years, due to the aging of rural areas, managing this type of overturned weir has become a job exclusively for the elderly.Therefore, we aim to reduce the labor involved in hoisting up the overturned weir boards, which is a heavy labor. The demand was strong.

(Purpose of the invention) This invention was made in view of the above circumstances.
It is an object of the present invention to provide an overturning weir that allows easy hoisting of fallen weir plates.

(Disclosure of the invention) The overturning weir according to the present invention uses a weight suspended on a wire and a weir as a hoisting force adding means for applying a rotational force in the direction of uprighting the weir plate to the wire hoisting rotation shaft of the hoisting device. It is characterized by the provision of a spring that is forcibly deformed when the board falls.

(Example) Fig. 1 is a front view of the overturning weir according to the present invention when water is stored as seen from the upstream side, Fig. 2 is a side view thereof,
FIG. 3 is a plan view of the main part when it is laid down, and FIG. 4 is a side view thereof. This overturning weir G includes a weir plate 2 with a base 2a pivotally attached to the bottom of the waterway 1, a hoisting device 3 installed on the embankment, and a flat plate-like structure provided at the upper end of one side of the weir plate 2. The end of the wire 5 let out from the hoisting device 3 is attached to the attachment piece 4 of the wire.

The weir plate 2 has a frame 10 made by combining aggregates vertically and horizontally, and a round pipe 1 at the top of the frame 10.
1 horizontally, and these frames 1
A steel plate 12 is attached to the upstream side of the round pipe 11. Watertight rubber 14 is attached by bolts 15 to the space between the bottom of the steel plate 12 and the bottom of the waterway 1 and the space between the side of the steel plate 12 and the side of the waterway 1 . The upper half of the weir plate 2 is a water tank 18 formed into a hollow container shape by a frame 10, a round pipe 11, a steel plate 12, a bottom plate 16, and a rear plate 17. A water suction pipe 20 is disposed at the upper end opposite to the mounting piece 4, and a filter 21 for removing dust, etc. is attached to the upstream side of the tip of the water suction pipe 20.
2 is provided. The water suction pipe 20 is supported by a pin 24 so as to be freely rotatable back and forth, and by rotating back and forth along an elongated fitting hole 25 into which the water suction pipe 20 fits, the water suction port 22 height can be changed. In addition, the water suction pipe 20 and the fitting hole 2
5 is closed by an elastic sealing material 26. The water intake port 22 is provided through a through hole 27 provided inside the water intake pipe 20 and the round pipe 11.
It is connected to the water tank 18. Further, at the lower part of the water tank 18, a drain port 28 having a smaller cross-sectional area than the water intake port 22 is provided on the rear plate 17 toward the downstream side.

5 and 6 are a plan view and a side view of the hoisting device. A plurality of rotating shafts, gears, and other parts are housed inside the outer box 30. The pulley shaft 31 provided in the center has a bearing 32,
32', and a weir plate pulley 34 and a weight pulley 35 are attached to both protrusions projecting to the outside of the outer box 30. The end of the weir plate support wire 5 is connected to the weir plate pulley 34 and wound in a predetermined direction. Other weight pulley 3
A weight support wire 36 is wound around the weir plate support wire 5 in the opposite direction to the weir plate support wire 5.
6, a weight 37 is supported in a suspended state within a vertical hole 39 made on the side of the hoisting device 3. A diagonal hole 39a for drainage is provided at the bottom of the vertical hole 39 toward the water channel 1 on the downstream side of the weir plate 2. The weight 37 is also supported by an adjustment wire 41 whose upper end is wound around and fixed to an adjustment pulley 40 installed directly above the vertical hole 39 . During normal water storage, weight 3
7 load is applied to the weight support wire 36 and the adjustment wire 41
It is distributed to. By changing the hanging length of the adjustment wire 41, the lowest position of the weight 37 can be adjusted, so the upright position of the weir plate 2 can be adjusted.

The rotating shaft 45 supported by bearings 44, 44' is a secondary shaft, and the two gears 4 of the pulley shaft 31
One gear 47 of 7, 48 and the secondary shaft 4
5 and the gear 46, the rotation of the pulley shaft 31 is transmitted to the secondary shaft 45 in a decelerating manner. A spring expansion/contraction pulley 49 is attached to this secondary shaft 45, and a spring expansion/contraction wire 50 is attached to the pulley 49.
are connected. On the other hand, a spring housing tube 53 is attached to a mounting frame 52 provided on the outer surface of the outer box 30, and a spring 54 is loosely fitted into the spring housing tube 53. Both ends of the spring 54 are connected to the mounting frame 52 and the pressing plate 5 which is slidably fitted into the spring storage cylinder 53.
6 and is positioned. The spring expansion/contraction wire 50 is connected to each through hole 3 of the outer box 30 and the mounting frame 52.
It is connected to this pressing plate 56 through 0a, 52a and the inside of the spring 54. In addition, the mounting frame 5
2 is provided with an adjustment bolt 57 for adjusting the installation position of the mounting frame 52. Further, the spring storage tube 53 is provided with a stopper position adjustment screw 58 for adjusting the length of the spring 54 when it is fully extended.

Next to the pulley shaft 31, a winding shaft 60 supported by bearings 61, 61' is provided parallel to the pulley shaft 31. A ratchet wheel 64 and a gear 63 are fitted to the winding shaft 60.
Furthermore, a rotating frame 70 is rotatably attached. The rotating frame 70 consists of a pair of left and right plates, the lower end of which is fitted onto the winding shaft 60, and the middle portion of which is fitted with a shaft 65.
A gear 73 is supported by a bearing 66, and a bearing 75 fitted to a shaft 74 is provided at the upper end. The gear 63 and gear 73 are always in mesh with each other. A stopper 68 that is pivotally supported by a pin 67 is engaged with the ratchet wheel 64 so that it can rotate only in one direction (winding direction). In the figure, 69 is a leaf spring that presses the stopper 68. Note that the end of the winding shaft 60 on the opposite side to the waterway protrudes from the outer box 30,
The tip portion 60a is a square rod portion into which a winding handle is fitted.

A cam shaft 80 is provided diagonally above the winding shaft 60, and a cam 81 is mounted on this shaft 80 with bearings 82, 8.
It is rotatably attached via 2'. The cam 81 has a fan-shaped recess 81a into which the bearing 75 is fitted, and a fan-shaped balance weight 8 on its outer periphery.
1b, and is surrounded by an arm 83, a stop lever 84, and a protrusion 8.
5 are respectively provided to protrude in the radial direction. One edge (upper side) of the fan-shaped recess 81a is a gently sloped surface 8
It is 1c. A bearing 75 of the rotating frame 70 is provided on the outer peripheral surface of the cam 81 just above the recess 81a.
are in contact with each other, and the rotating frame 70, which is always urged in the counterclockwise direction in the figure by the coil spring 87, is supported by this. In this state that the bearing 75 is not fitted into the recess 81a, the gear 73 of the rotating frame 70 is positioned on the pulley shaft 31.
The gear 48 meshes with the gear 48.

A clutch shaft 9 is disposed diagonally below the camshaft 80.
0 is provided, and the one-way clutch 91 is connected to the bearing 9.
2,92' for rotation in one direction. The one-way clutch 91 is stable with its balance weight 94 located on the lower side and the lever 95 protruding in the horizontal direction. A lever 95 of the one-way clutch 91 is arranged to engage the protrusion 85 of the cam 81 during rotation. A chain 96 is stretched between the clutch 91 and the pulley shaft 31.

A water hole 101 communicating with the water channel is provided at the lower end of the rod 102 that penetrates the bottom of the outer box 30 and projects downward.
A spherical float 103 housed within the rod 102 is fixed, and a small circular plate 105 is attached to the upper end of the rod 102.
is fixed. This small circular plate 105 is located directly below the arm tip 83a of the cam 81. Furthermore, a shock absorber 107 to which rubber or the like is attached for absorbing impact is attached to the rotation stop position of the stop lever 84.

An oil brake 110 is attached to the side wall of the outer box 30, and a sprocket wheel 112 fitted on its rotating shaft 111 is connected to a sprocket wheel 113 of the pulley shaft 31 via an idler 114 by a chain 115. It is.
The rotational speed of the pulley shaft 31 is regulated by this oil brake 110.

Note that between the pulley shaft 31 and the winding shaft 60,
If necessary, more gears can be inserted to reduce the force required to wind up the weir plate 2.

Next, to explain the operation of this overturning weir, when the weir plate 2 is upright as shown by the solid line in FIG. 2, the arm 83 of the cam 81
The distal end portion 83a is maintained directly above the small circular plate 105, as shown by the solid line in FIGS. 6 and 7. In this state, the bearing 75 of the rotating frame 70 is located outside the recess 81a of the cam 81 and is in contact with the outer circumference of the cam 81, and the gear 73 in the middle of the rotating frame 70 is in contact with the gear 48 of the pulley shaft 31. They mesh together. Further, the gear 73 meshes with a gear 63 fixed to the winding shaft 60, and the winding shaft 60 has a ratchet wheel 64 that allows the winding shaft 60 to rotate only in the winding direction (the direction in which the weir plate 2 is erected). is fixed, so even if a force (due to water pressure and the gravity of the weir plate 2) in the direction of pushing down the weir plate 2 is applied to the pulley 34 via the wire 5, the pulley shaft 31 does not rotate. The dam will not collapse. In this state, water on the upstream side gradually flows out over the weir plate to the downstream side.

Next, when the waterway rises due to a shower or the like and the water level reaches the overturning water level WL ₁ , the float 103 moves upward (arrow P) due to buoyancy, and the small disc 105 integrated with the float 103 moves toward the arm 83. rotate it upward. Therefore, the cam 81 rotates in the direction of arrow Q and the recess 81a of the cam 81 moves to the position shown by the chain line in FIG.
1a, the rotation frame 30 rotates in the direction of arrow R (counterclockwise) by that amount, and the gear 73 and the gear 48 are disengaged. As a result, the pulley shaft 31 is no longer restrained by the ratchet 64 and the pulley 34 can rotate freely, so the wire 5 is let out from the pulley 34.
Due to the water pressure, the weir plate 2 suspended by this wire falls over as shown by the chain line in FIG. 2 with the base 2a as the center of rotation. The cam 81 is provided with a balance weight 81b, and since the weight of this part is large, the cam 81 moves toward the arrow Q.
If it rotates slightly in this direction, the weight balance will be disrupted and it will be biased in the direction of more rotation. and,
The stop lever 83 is the shock absorber 107
The cam 81 stops at the position where it contacts.

When the weir plate 2 falls, the weight 37 suspended by the weight support wire 36 is rolled up, and the spring expansion/contraction wire 50 is wound around the pulley 49, so that the spring 54 is contracted. Therefore, the force in the direction of raising the weir plate 2 is applied to the weight 3.
7 and spring 54. In this case, the force in the hoisting direction due to the weight 37 is always constant regardless of the magnitude of the inclination of the weir plate, but the reaction force of the spring 54 increases proportionally as the weir plate 2 advances.

On the other hand, when the weir plate 2 collapses, the water intake port 22 is submerged, and water flows into the water tank 18, increasing the weight of the weir plate 2. Therefore, weight 37 and spring 5
Even if the hoisting force generated by the weir plate 4 is large enough to raise the weir plate 2 when the water tank 18 is empty, the weir plate 2 is kept in a collapsed state.

When the water level in the waterway 1 drops to the standing water level WL 2, which is lower than the water intake port 22 due to discharge due to the collapse of the weir plate ₂ , the flow of water into the water tank 18 is stopped and water is discharged from the drain port 28 into the water tank 18. Since the water inside is discharged, the weight of the weir plate 2 is reduced. Therefore, the weir plate 2 is erected by the hoisting force from the hoisting force applying means such as the weight 37 and the spring 54. The force required for hoisting is at its maximum when the weir plate 2 is in a completely collapsed horizontal state, and decreases as the weir plate rises up, but the reaction force of the spring 54 is maximum when the weir plate 2 is completely collapsed. As it rises, it becomes smaller, so it effectively works to roll up the weir board.

When the weir plate 2 is rolled up, the one-way clutch 91 that works only in the winding direction is activated, and the lever 95 attached to the one-way clutch 91 moves in the direction of arrow S.
While rotating in the direction, the protrusion 85 of the cam 81 is pushed up, and the cam 81 is rotated in the opposite direction of the arrow Q. Therefore, the bearing 75 of the rotating frame 70 is in the recess 81a.
The arm 83 of the cam 81 is pushed out of the recess 81a along the gently sloped side wall 81c, comes into contact with the outer peripheral surface of the cam 81, and is supported by the arm 83 of the cam 81.
The distal end portion 83a of is returned to its original state located on the small disk 105. In this state, the gear 73 and the gear 48 mesh with each other, so the weir plate 2 will not collapse until the float 103 moves upward again.

In addition, a stopper 12 that determines the upright position of the weir plate 2
0 may not be provided, and the amount of winding of the weir plate may be regulated solely by adjusting the hanging length of the adjustment wire 41.

Furthermore, if necessary, a torque wrench-like handle can be fitted onto the tip 60a of the winding shaft 60, and the winding shaft 60 can be rotated to raise the weir plate 2. In this case as well, since the weight 37, the spring 54, and other winding force applying means are provided, the work of winding up the weir plate 2 is easy.

In the illustrated example, the weight 37 is installed underground, so it does not get in the way and has the advantage of not taking up unnecessary space outside, but it may be installed outside depending on the case.

(Effects of the invention) As explained above, the overturning weir according to the present invention accumulates water pressure etc. at the time of overturning, and uses a hoisting shaft such as a weight to apply a force in the direction of uprighting the overturned weir plate to the hoisting shaft. Since the force applying means is provided, the work of hoisting the weir plate becomes extremely easy. In particular, in this invention, in addition to a weight that exerts a constant hoisting force, a spring is installed that produces the maximum reaction force when the weir board is completely collapsed, so that the start-up when the weir board is upright is becomes easier. In the above embodiment, when the weir plate collapses and the water level of the waterway drops, the structure is such that a hoisting force is applied to automatically raise the weir plate, but such a large hoisting force Even if you do not apply a force to the winding shaft, it is sufficient to apply a winding force to the extent that the work can be done easily when the winding shaft is manually turned using a handle.

[Brief explanation of the drawing]

1 and 2 are a front view and a side view of the overturning weir according to the present invention as seen from the upstream side, FIGS. 3 and 4 are a plan view and a side view showing the inverted state, and FIGS. Figure 6 is a plan view and side view showing a part of the hoisting device expanded, and Figure 7 is
The figure is an enlarged view of the main part. 1... Channel, 2... Weir plate, 3... Hoisting device,
5...Wire, 14...Watertight rubber, 18...Water tank, 20...Water intake pipe, 22...Water intake port, 28...
...Drain port, 30...Outer box, 31...Pulley shaft, 3
4, 35... Pulley, 37... Weight, 39... Vertical hole, 41... Adjustment wire, 54... Spring, 60
... Winding shaft, 70 ... Rotating frame, 81 ... Cam,
103...Float.

Claims (1)

[Scope of utility model registration request] In an overturning weir, a weir plate whose base is pivotally attached to the bottom of a waterway is supported in an upright state by a hoisting device via a wire, and can be overturned to open the waterway if necessary, The hoisting force applying means for applying a force in the direction of uprighting the overturned weir plate to the wire hoisting rotating shaft of the hoisting device includes a weight suspended from the wire and a spring that is forcibly deformed when the weir plate falls. An overturning weir characterized by the provision of.