JPH0439526B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention provides a rollover gate using a non-powered balance weight system equipped with a hinge mechanism on the side of the gate of a waterway, in which the rotation axis of the rollover gate is less than half the gate height. This invention relates to an automatic water level adjustment device for waterways which has the function of being able to quickly respond to any water level by setting the gate in the above position and adding other auxiliary mechanisms to turn over and return the gate.

(Prior art) Various types of automatic water level adjustment devices have been devised in the past.
If we consider the downstream side separately, it is said that the state where the gate overturns can be seen by the difference in water level (difference in water level height between upstream and downstream) flowing over the gate, but it is not actually the case. The reality is that the situation is not fully understood, and in actual installation, measures are taken such as installing a float chamber on the upstream side to help prevent the gate from overturning due to the difference in water level alone. .

However, since it is undesirable to complicate the system and incur costs, the challenge was to find a simple solution.

(Problem to be Solved by the Invention) Although it cannot be generalized based on the installation location of the automatic water level adjustment device and the current condition of the waterway, the key issue is how smoothly to deal with abnormal water rises, and the present application I thought about a type of system that does not use areas other than waterways.

Although there are various conditions of water flow in the event of an abnormality, the aim of this application is to devise ways to ensure that the gate can be rolled over and returned to its original position without any problems. The accompanying judgment criteria are included.

(Means for solving the problem) A link-shaped support arm having at least one fulcrum, and a hinge pin on one side of the arm that serves as the rotation axis of the gate that rolls sideways through a connecting rod and a ramming rod. The position is less than half of the total height, and the other side of the arm is equipped with a bearing, balance weight, and auxiliary opening/closing device.Furthermore, an opening is provided in the gate to make it easy to overturn under water pressure, and to prevent overflow. This device allows the gate to easily overturn in response to an increase in water flow.

(Structure of the Invention) An embodiment of the present invention will be described based on the drawings.
1 is a gate, 2 and 2 are hinge pins that serve as the rotation axis of the gate, 3 and 3 are bearings for the hinge pin, 7 is a connecting rod connected to the bracket 40, and 9 is connected to the gate 1 via the connecting rod 7. The support arm 10 is a connection pin between the connection rod 7 and the support arm 9.

33, 33 are reinforcing materials for the support arms 9, 9; 34;
3 is a support arm shaft inserted into bearings 35, 35;
Reference numeral 6 indicates a slidable metal fitting that holds the balance weight 16, 37 indicates a positioning bolt for 36, 38 indicates a support arm beam, 39 indicates a dust cover provided on the connecting rod 7, and 40 indicates a gate 1. Gate brackets provided on both sides of the top surface, 41, 41 are hinge pins that connect the bracket 40 and the connecting rods 7, 7, 42, 42 are fixing metal fittings that fix the balance weight 16, and 43, 43 are lock bolts of the same metal fittings. .

Fig. 1 44 shows an auxiliary opening/closing machine for the gate 1 that has a notch (see Fig. 6) that allows the support arm 9 to move up and down easily, 45 is the mounting base of the machine, 46 is the spindle of the machine, and 47 is the spindle. The hanger 48 is attached to the hanger 4 via the spindle.
7 is the rotating handle of the auxiliary opening/closing machine 44 that moves up and down, 49 is the hanger pin, 50, 50 is the gate 1
This is a pin hole that allows you to insert a pin into any position to finely adjust the opening/closing angle of the gate if you wish to open or close it artificially.

3. 51 shows a gate bracket located at the center of the upper part of the gate 1 having an opening 60, 52 a hinge pin connecting the connecting rod 7 and the gate bracket 51, 53 a bearing of the support arm 9 located at the center of the water channel, 54 is an axis serving as a fulcrum of the support arm 9, 55
56 is a mounting bolt for the bearing, 57 is an anchor bolt for the stage 55, 58 is a slidable holding metal having a holding mechanism for the balance weight 62, and 59 is a positioning of the same metal. 60 is an opening of the gate 1, 61 is a hinge pin hole of the gate bracket 51, 62 is a balance weight, 63 is a hinge pin base, and 64 is a bolt for joining the base to the gate 1.

Insert the gate hinge pins 2, 2 fixed to the hinge pin bases 63, 63 from the inside of the gate 1 into the bearings 3, 3 buried in both walls of the waterway, and attach the hinge pin bases 63, 63 to the gate 1 with the bolts 64. to be joined to.

a shaft 34 of each of the support arm bearings 35 and 53;
Rotatable connecting rods 7, 7 are connected to one ends of support arms 9, 9 with 54 as a fulcrum, with pins 10, 10,
Further, hinge pins 41, 41 and 52 are connected to the gate brackets 40, 40 and 51, respectively.

The end portions of the support arms 9, 9 are designed to have a moment equivalent to the force for vertically returning the gate 1 from an overturned state when no load is applied, and when the water level is normally A, overflowing water will not occur. When the water rises and reaches position B, the gate load increases and the gate 1 rolls downstream and is supported by stoppers 20, 20 at position E.

When the water level decreases to position C, the gate load is also reduced, and the gate 1 returns to the vertical position due to the action of the balance weight and is held by the stoppers 19, 19.

(Function of the Invention) To explain the function of the present invention, in the rollover gate 1, the gate 1 is held vertically and then rolls over in the downstream direction (counterclockwise). (The influence on the overturning of the gate is largely due to the difference in water level between upstream and downstream), and the load decreases rapidly as it slopes horizontally.

Further, the more the fulcrum of the gate, that is, the set position of the hinge pins 2, 2 of the rotating shaft, is less than half the gate height, the less the load required for the gate to roll over. However, this point cannot be considered without ignoring the influence of the water level difference mentioned above.

When the water level is over and the water level starts to drop, the force of the balance weight 16 or 62 (Fig. 3) will act to return the gate 1, but the stoppers 19, 19 will keep the gate 1 vertical. It will stand up to the state of . U is a waterway, and the arrow indicates the direction of flowing water.

The water level at A indicates the planned water level during normal times, and the water level at Gate 1
are connected and held by a connecting rod 7, and in a vertical state supported by stoppers 19, 19, overflowing water flows downstream.

When the water level reaches position B, the gate turns over as described above and enters state E (dotted chain line). That is, B
At this time, the load is greater on the gate side than on the balance weight side, and the gate 1 rolls over (in a horizontal state) and is held by the stoppers 20, 20.

The auxiliary opening/closing device 44 is installed so that the support arm 9 can move up and down, and the operation of the gate 1 is as described above. (Figure 3) is used as a fulcrum and the left side descends, gate 1 overturns and the downstream water level rises to position F.

When the water level decreases to C, the load will be greater on the balance weight side than on the gate side, and the gate will return to its original position. Another function of this machine is to use the rotating handle 4 of the auxiliary opening/closing machine 44 when it is necessary to adjust the water level during normal water levels, or when leaving the gate open without using it during the winter.
By operating the gate 8, the gate 1 can be held at any desired position.

As shown in FIG. 5, the reason why the gate 1 has an opening is because water normally flows through the opening, but when water rises and exceeds the same height, water flows downstream to the upper plate surface 65 of the gate. The water pressure acts against the gate and acts to add to the load of the gate overturning.

Although the present invention has been described in detail on the assumption that the gate 1 is rotated counterclockwise, this is not necessarily the case, and it is of course possible to configure the gate 1 to rotate clockwise (sideways).

(Effects of the Invention) The present invention, which has been made based on the above configuration, has a configuration based on the premise that this device is installed within a range on a waterway, and there are two types of support arms 9, 9 in series, and two in series. Although the example shown above is the same, in both cases, the fulcrum (rotation axis) is set at a position less than half the gate height, and the auxiliary switch 44 and the gate opening are provided. By further reducing the water flow load when the gate starts to overturn, and by setting the gate to return using a balance weight, the gate opens and closes more smoothly, and furthermore, by excluding the installation of pits, etc., the construction cost is reduced as much as possible. It has the effect of meeting its original purpose in that it aims to reduce

In addition, the installation, maintenance, and inspection work that has been pointed out in the past, including the installation of a dust cover, can be easily performed, and consideration has been given to the accumulation of floating matter in waterways, so the overall cost is also reduced. It has a remarkable effect.

[Brief explanation of drawings]

Fig. 1 is a schematic explanatory diagram showing an example of the implementation of the present invention, and Fig. 2 is a plan view of the same, and Fig. 3 is a schematic explanatory diagram of a configuration in which support arms are arranged in a series. , FIG. 4 is the same plane, FIG. 5 is a detailed view of the gate in FIG. 3, and FIG. 6 is an enlarged detailed view of the auxiliary switch. 1... Gate, 2, 2... Hinge pin that serves as the fulcrum of the gate, 9... Support arm, 16, 62...
Balance weight, 44... Auxiliary opening/closing machine, 60...
...gate opening.

Claims (1)

[Claims] 1. A rollover gate using a non-powered balance weight system that does not use any space other than the waterway and has a hinge mechanism on the side of the gate, and has a link-shaped support arm that has at least one fulcrum, and one of the arms is equipped with an auxiliary opening/closing device. An automatic water level adjustment device for a waterway, characterized in that the gate is provided with a balance weight and an opening on the other side of the gate, and the rotating shaft of the gate is set at a position less than half the height of the gate.