JPH0439523B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) In a non-powered, balance weight type rollover gate, one of the arms has a gradient flow (direct flow of water falling vertically from the downstream gate). A gate with an inclined plate that changes the downstream flow to a gentle natural flow, a balance weight attached to the other side and the balance weight also functioning as a float, and a float chamber communicating with the waterway. This invention relates to an automatic water level adjustment device for waterways divided into two types.

(Prior art) Conventionally, this type of automatic water level adjustment device has a radial gate that allows water to flow from the bottom of the gate.
Floating objects such as dust can easily accumulate on the water surface upstream of the gate, and if running water falls from above the gate, the falling water flow will be directly downstream, causing noise if the surrounding area is quiet, such as late at night. The situation was unfavorable from an environmental standpoint.

(Problems to be Solved by the Invention) In order to solve these problems, the present invention has been made to eliminate floating matter such as dust that accumulates on the water surface upstream of the gate, and to provide a still water pond and a float chamber on the waterway side. There were problems such as eliminating maintenance costs due to clogging of water supply pipes and drain pipes that occur when the gate is closed, and eliminating the impact of the noise directly downstream from the gate that would normally fall from above.

(Means for solving the problem) As explained in Japanese Patent Application No. 62-65197, the above-mentioned problem was solved by providing a gate that can be turned over 90 degrees on one side of the support arm of the balance weight system. Avoid installing a still water pond and a float room on the waterway side unless there is one, and instead use a hollow plumb whose weight attached to the other side of the arm doubles as a float (see Figure 4). This is handled by installing a slope plate connected to the gate to convert the flow directly downstream into a gradient flow.

(Structure of the Invention) An embodiment of the present invention will be described with reference to the drawings. 1 is a gate, 2 and 2' are hinge pins 3 and 3' which are rotational axes of the gate, and hinge pins 2 and 3' buried in the waterway surface;
Bearing 2', 4, 4 are brackets that connect the connecting rods 6, 6' installed on the gate 1, 5, 5' are pins that connect the brackets 4, 4' and the connecting rods 6, 6',
7, 7' are pins that connect the connecting rods 6, 6' and support arms 8, 8'; 8, 8' are support arms that roll over (open and close) the gate via the connecting rods 6, 6';9;
9' is a reinforcing member for the support arms 8, 8'; 10 is a shaft that constitutes a fulcrum for the support arms 8, 8'; 11, 11' is a bearing that is a fulcrum for the support arms 8, 8';
Reference numeral 12' denotes a slidable mounting bracket having a holding mechanism for the balance weight 14 attached to the support arms 8, 8', 13, 13 a push bolt for fixing this mounting bracket, and 15 a float 20 hanging vertically movably. The arm member 16 connects the float 20. The pin 17 is a connecting rod of the float 20.
8 is a bracket for attaching the connecting rod 17 installed on the float 20, 19 is a pin for connecting the bracket 18 and the connecting rod 17, and 20 is a float for interlocking the supporting arms 8, 8' via the connecting rod 17 and the arm member 15. be.

21 is a guide rod of the float 20, 22 is a guide fitting for the guide rod 21 attached to the float 20, 23 and 23' are water ports communicating with the float chamber 24, 24 is a float chamber, and 25 is a float chamber 24.
wall surface, 26, 26' is the slab of the waterway, 27, 2
7 is a stopper provided on the bottom of the waterway that holds the gate 1 in a vertical position; 28 and 28' are stoppers that hold the gate 1 in the overturned position (state D of the gate 1);
29 is the lower surface of the waterway, 30 is the hinge hardware 31, 31'
and an inclined plate connected to the gate 1 via hinge pins 32 and 32'; 33 and 33' are brackets for rollers 34 and 34' provided on the inclined plate 30;
5' is the roller shaft of the rollers 34, 34', 36, 3
6' is a rail surface to facilitate the rotation of rollers 34, 34', 37, 37' are dustproof covers to prevent dust from adhering to connecting rods 6, 6', and arrows indicate the direction of water flow. It shows.

A indicates the planned water level height under normal conditions, and the gate 1 is normally in the state of A (vertical). B, C, and D each indicate the water level when the water increases, and when the gate 1 is in the open state (overturned), they correspond to the positions of B', C', and D', respectively.

That is, at the time of maximum water increase at D, the gate 1 is in the horizontal position D', and the inclined plate 30, which is connected via the hinge hardware 31, 31 and the hinge pins 32, 32', is connected to the roller brackets 33, 33' and the roller 3.
4, 34' and roller shafts 35, 35', the rail surfaces 36, 36' are moved according to the degree of inclination of the gate 1, and when the gate 1 is in the state D, the inclination is close to the horizontal state.

Taking as an example a case where the float chamber 24 is not provided on the waterway side, the mounting brackets 12 and 1 which can freely slide the hollow weight 38 into the state shown in FIG.
2' to the support arms 8 and 8', the gate 1 can be rolled over (opened and closed) and the gate 1 can be rotated as described above.
Movement of the inclined plate 30 connected to is performed.

38 is a hollow weight 39 that serves as a weight and a float; 40, 40' and 42, 42' are positioning bolts fixed to the hollow weight 38; Fixing nuts 41 and 41' for positioning are insertion holes for positioning bolts 39 and 39' provided in the mounting fitting 12.

(Operation of the invention) As shown in FIGS. 1 to 6, the hinge pin mounting holes (not shown) of the gate 1 are bored at the same positions as the bearings 3, 3' of the hinge pins 2, 2' buried in the wall of the waterway. , hinge pin 2 from the inside of gate 1,
2' is inserted into the bearings 3, 3', the hinge pin is fixed to the gate 1, and the rotatable connecting rods 6, 6' are connected to the pins 7, 7 at one end of the support arms 8, 8' with the bearing 11 as the fulcrum. and a hinge metal fitting 3 loosely fitted to the brackets 4, 4' attached to the gate 1 via pins 5, 5' and provided on the gate 1 and the inclined plate 30.
The gate 1 and the inclined plate 30 are connected through the hinge pins 1 and 31 and hinge pins 32 and 32'. A rotatable roller 34 is provided at the bottom of the inclined plate 30 via roller brackets 33, 33' and roller shafts 35, 35'.In order to facilitate the rotation of the roller 34, a rail surface is provided on the waterway bottom surface 29. Plant. At the ends of the support arms 8, 8' facing the gate 1, a balance weight 14 is normally attached via slidable mounting brackets 12, 12' so that the moment is larger than that on the gate side. Arm 8,
An arm member 15 from which a float 20 is suspended vertically is attached to 8' and connected to a float chamber 24 communicating with a waterway.

The float chamber 24 has water holes 23, 23' at the bottom.
Since the water level is always the same as the water level of the waterway, if the float 20 is set slightly above the planned water level, the float 20 will not work normally. Therefore, the planned water level A is maintained and the gate 1 is maintained vertically (A
), and the flowing water overflows the upper surface of the gate and flows downstream via the inclined plate 30 as a gradient flow. When the water increases and the water level reaches a height B, the float 20 receives buoyancy and pushes up the support arms 8, 8' via the connecting rod 17 and the arm member 15. A gate is connected to the support arms 8, 8' via connecting rods 6, 6', and the buoyant force of the float 20 becomes a thrust in conjunction with the connecting rods, and the gate 1 generates a reaction force using the shafts 2, 2' as fulcrums. Rotate clockwise to position B'. An inclined plate 30 is connected to the gate 1, and the inclined plate 30 moves downstream via rollers 34 in conjunction with the gate 1.

When the water level rises to a height of C, the gate 1 is tilted 45 degrees to a state of C'. When the water level rises further and reaches height D, Gate 1 rolls over 90 degrees.
The position is D' (supported by stoppers 28 and 28'). The inclined plate 30 connected to the gate 1 also moves in conjunction with the gate and assumes a substantially horizontal position. This position indicates that the gate 1 is fully open. When the water level falls, the float follows the water level and descends, and by the action of the balance weight 14, the gate 1 and the inclined plate 30 return to their normal state, that is, the position A'.

If a float chamber is not provided, the hollow weight 38 is attached to the support arms 8, 8' via the slide and the mounting bracket 12, which has a mechanism that allows the hollow weight 38 to be freely positioned. If the balance is adjusted so that the moment is larger on the gate side, the same effect as described above can be obtained. In this way, due to the action of buoyancy as the water level rises, the gate 1 is moved around the shaft 10 of the support arms 8, 8' as a fulcrum.
The water level can be automatically controlled by opening, closing, and moving the inclined plate 30, and the water flow that overflows the gate 1 and falls vertically is made into a gentle gradient flow via the inclined plate 30.

(Effects of the Invention) As described above, the present invention has a simple structure, and in normal times, the water overflows and the water flow is made into a gentle gradient flow through the inclined plate linked to the gate, so it overflows the gate and falls. The main feature of the gate is that it was designed to prevent water from overflowing, as the sound of the flowing water becomes quieter, and in the event of an abnormality, it balances with the water level and allows the gate to easily roll over in the downstream direction. There is no accumulation of floating matter such as dust upstream, and the system is fulfilling its original purpose. In rivers where the hollow weight that can be used as both a float and a weight can be used, that is, in locations where a float chamber is not required, the production cost is even lower, and the problem is that the water supply pipes and drainage pipes are clogged with dirt, sand, etc. In addition to eliminating the need for cleaning management, the system automatically controls the water level unmanned and without power, and has a beneficial effect in preventing overflow damage and water damage caused by flooding.

[Brief explanation of drawings]

Figure 1 is a schematic diagram explaining the action of the float, the overturning (opening and closing) of the gate, and the movement status of the inclined plate as the water level upstream of the gate changes, Figure 2 is a plan view of Figure 1, and Figure 3 is An explanatory diagram showing the connection between the support arm and the inside of the float chamber as seen in the arrow view of FIG. 2 a-a,
Fig. 4 is a schematic diagram showing a state in which a hollow weight that functions as a float and weight is attached when a float chamber is not provided, and Fig. 5 shows a hollow weight attached to arm 8 as viewed from the arrow b-b in Fig. 4. , 8' is an enlarged plan view of the state in which the hollow weight is attached, and FIG. 1...Gate, 6, 6'...Connecting rod, 8, 8'...
... Support arm, 10 ... Axis, 14 ... Balance weight, 20 ... Float, 24 ... Float chamber, 30 ... Inclined plate, 38 ... Hollow weight.

Claims (1)

[Scope of Claims] 1. A non-powered, balance weight type rollover gate equipped with a float chamber communicating with a waterway, which includes a link-shaped support arm having a fulcrum, and one of the arms is connected to a connecting rod for rollover gates. Equipped with a gate with an inclined plate, a slideable balance weight is attached to the other arm of the arm, and a noise-reducing mechanism that allows the gate to overturn only in the event of an abnormal rise in water, and in normal times causes the overflow to flow at a gradient. Automatic water level adjustment device for waterways. 2. A non-powered, balance weight type rollover gate in a waterway is equipped with a link-shaped support arm having a fulcrum, one of the arms is equipped with a gate with an inclined plate that rolls over via a connecting rod, and the other arm is equipped with a weight. An automatic water level adjustment device for waterways equipped with a hollow weight that also serves as a float, and a noise-reducing mechanism in which the gate overturns only in the event of an abnormal rise in water, and in normal times, overflowing water is turned into a gradient flow.