JPS6027143Y2 - Weir automatic lodging device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an automatic lodging device for a flexible weir made of rubber or the like, which lowers and raises the weir by letting air in and out.

Conventionally, in a weir made of a flexible bag body, the weir is automatically lowered without power and without supervision to ensure the safety of the weir itself and eliminate manual lowering operations. An automatic weir lodging device that is distantly related to this has already been devised (see Japanese Patent Laid-Open No. 56-64013).

However, in this case, if the float valve did not operate normally, there was a risk that the river would overflow, floods, or the weir itself would be damaged.

The present invention was developed in view of the above-mentioned problems, and if a situation occurs where the float valve does not operate even if the water level exceeds the level, the safety device operates to cause the weir to collapse. The object of the present invention is to provide an automatic weir lodging device that solves the problems.

For this reason, the configuration of the automatic weir lodging device of the present invention is to seal the open end of the exhaust pipe communicating with the weir on one side to form an airtight part, and to form an airtight part on the other side via a wire. A drop lever is provided to allow the float to hang down and to be rotatable about a first pivot point, and a drop lever is provided to be rotatable about a second pivot point and has a weight on one side and a weight on the other side. includes a lever having an engaging portion that hangs the float and engages and disengages the drop lever, a safety membrane provided at the open end of the branch pipe of the exhaust pipe, and a tip end. The present invention is characterized by comprising a safety device comprising a rod that is formed into a sharp point and has a tip portion facing the safety membrane and a rod having a float at the other end portion.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

As shown in FIG. 1, it is assumed that a river A flows in a direction B, and a weir 1, which is a flexible bag made of rubber or the like, is installed across the river on the bed of the river A.

The hollow chamber 2 of this weir 1 is filled with introduced air.

The weir 1 having a water-stopping function is constructed by overlapping each end of a flexible sheet member 3 and a sealing sheet (not shown) laid on a river bed and fixing them together by a clamp device (not shown). The watertightness and airtightness at the overlapping portion of the sealing sheet and the flexible sheet member 3 are ensured, and
This weir 1 is designed to be firmly held even if a large pressure is applied to it.

The ventilation pipe 4 has one end open to the atmosphere, and the other end is an air tank 5.
A communication pipe 6 connected to the air tank 5 and having one end opened on the side of the air tank 5.
It communicates with weir 1 by.

The ventilation pipe 4 is connected to the weir 1 on the way to the air tank 5.
An air feeding device 7, such as a blower or a near compressor, is provided to feed air as indicated by an arrow in the figure.
Furthermore, a manual valve 9 is provided for opening and closing a circuit connected from the weir 1 to a float valve type automatic lodging device 8.

The air tank 5 is provided to prevent air leakage when the circuit is closed and to maintain a constant pressure inside the circuit.

The air tank 5 also has one end of an exhaust pipe 10 open therein, and the other end of this exhaust pipe 10 is connected to the automatic lodging device 8 .

Reference numeral 11 indicates a branch pipe, and reference numeral 12 indicates a safety device pipe which is opened at the bottom of the river in order to exhaust the overpressure air that has been pumped in and maintain the air pressure at an appropriate value at all times, and each branch from the exhaust pipe 10.

Note that river water has entered the lower part of the safety device pipe 12.

The automatic lodging device 8 is of a float valve type and utilizes the buoyancy of a float, and has a structure as shown in FIG.

That is, in the float chamber 13, an airtight part 14 is formed by sealing the open end 10a of the exhaust pipe 10 communicating with the weir 1 on one side, and a flexible member is provided on the other side. A dropping lever 18 is disposed which allows the first float 16 to hang down via a wire 15 and is rotatable about a pin 17 serving as a first pivot point.

Also, it is provided so as to be rotatable around a pin 19 that serves as a second pivot point, and has a weight 20 on one side and a second float 22 hanging down via a rod 21 on the other end, and is able to fall off. A lever 24 having a roller 23 is disposed at an engaging portion that engages and releases the lever 18 .

Further, a safety membrane 25 is provided at the open end 11a of the branch pipe 11, and a third float 26 is provided at the safety membrane 25 and at the tip end facing the safety membrane 25 with a sharp tip and at the other end. A safety device consisting of a rod 27 is provided.

In addition, in FIG. 2, 28 indicates a stopper that restricts the rise of the float 16, and 29 indicates a stopper portion 27a that guides the rod 27 and is provided on the rod 27.
shows the guide that makes up the stopper mechanism.

In addition, in order to artificially collapse the weir 1 if necessary, an operating pipe 30 is provided, one end of which opens to the atmosphere and the other end of which opens to the ventilation pipe 4 located between the air supply device 7 and the manual valve 9. A manual valve 31 provided on the operating tube 30 allows the air in the circuit to be discharged.

In the figure, 1' indicates a state in which the weir 1 is contracted and collapsed.

Next, the operation of this embodiment will be explained.

Close the manual valve 31 and open the manual valve 9,
By operating the air supply device 7, air is sent into the chamber 2 of the weir 1 to raise the weir 1 near the water level a on the upstream side.Then, when the manual valve 9 is closed, the weir 1 is automatically A closed circuit is formed leading to the lodging device 8.

Now, as the river A increases, the water level on the upstream side C rises.Continuing, when the water level on the upstream side C of weir 1 reaches the collapsed water level, the float 22 rises and the lever 24 moves counterclockwise around the pin 19. Rotate to.

As a result, the roller 23 is disengaged from the dropping lever 18, and the engagement between the lever 24 and the dropping lever 18 is released, so that the dropping lever 18 rotates counterclockwise about the pin 17.

At this time, the float 16 is in contact with the stopper 28, and the wire 15 is bent, so that the drop lever 18 can be rotated without any hindrance.

The rotation of the drop lever 18 in the counterclockwise direction stops when the projecting piece 18a engages with the roller 23, and the positional relationship between the lever 24 and the drop lever 18 is such that the drop lever 18 is always upward. It is as it is.

When the drop lever 18 rotates counterclockwise, the drop lever 18 separates from the open end 10a of the exhaust pipe 10, and the airtight portion 1
4 retreats, the pressurized air within the weir 1 flows out from the open end 10a, and the automatic lodging device of the weir 1 is activated.

When the weir 1 is automatically lowered, the water level on the upstream side C decreases, but when it reaches the rising water level C, the float 16 descends sufficiently and the wire 15 no longer bends, and tension is generated there, so it falls off. The lever 18 rotates clockwise around the pin 17.

As a result, the drop lever 18 seals the open end 10a again, forming the airtight portion 14.

At the same time, since the lever 24 is set so that the clockwise rotation moment due to the float 22 is larger than the counterclockwise rotation moment due to the weight 20, the lever 24 also rotates clockwise, and the roller 23 engages with the drop lever 18. and return to its original state.

In this state, if the manual valve 9 is opened and the air supply device 7 is activated, the weir 1 can be erected.

Furthermore, in the event that the float 22, drop lever 18, etc. do not operate normally, the float 26 will rise and the rod 27 will rise when the safety device activation water level d is reached.

In this case, the rod 27 will press the safety membrane 25, and since the tip of the rod 27 is sharply formed,
The safety membrane 25 is broken and the pressurized air inside the salt 1 is discharged from the open end 11a.

Once the safety membrane 25 is damaged, if the lever 24 operates, the tip 24a on the weight 20 side will move to the stopper portion 24.
7a and suppresses the upward movement of the rod 27,
Even if the water level reaches the safety device activation water level d again, the rod 27 will not rise and the safety membrane 25 will not be damaged again.

In any case, if the safety membrane 25 is damaged and the safety device is activated, it is proof that there is a defect in the float 22, lever 24, release lever 18, etc., and it is necessary to repair it. Of course.

In addition, the automatic lodging device 8 may be installed in the operation shed, or the operation shed may have only an air supply device and the other may be installed on the slope, but in the former case, the device of the present invention has an extremely simple structure. In addition, in the latter case, the operation shed can be even smaller, and there is no need to install a float room or water pipes below the operation shed, which has the advantage of lower civil engineering costs. be.

As described above, according to the present invention, automatic lodging of the weir can be achieved with an extremely simple structure, and even if a failure occurs in the automatic lodging mechanism system, the safety device will be activated once the water level reaches the safety device activation level. It is extremely safe as it allows the weir to be lowered down.Furthermore, when the water level reaches the rising water level, it is automatically set, and the rest is done.
A weir automatic lodging device can be provided which is very convenient because the weir can be raised only by releasing a manual valve and operating an air supply device, and there is no need to reset it.

Further, as in this embodiment, if a safety device pipe is provided that branches from the exhaust pipe and opens at the bottom of the river, the air pressure is controlled to an appropriate value depending on the water level of the river, so there is an advantage that resetting is not necessary.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of an embodiment of the present invention, and FIG. 2 is an explanatory diagram of the main parts. 1... Weir, Grain... Automatic lodging device, 10.
...exhaust pipe, 10a...opening end, 11.
... Branch pipe, lla ... Open end, 12 ...
... Safety device pipe, 13 ... Float chamber, 1
4... Airtight part, 15... Wire, 16
゜22.26...Float, 17...
Pin, 18... Dropping lever, 19...
Pin, 20... Weight, 21... Tatsudo, 23... Roller, 24... Lever,
25...Safety membrane, 27...Tatsudo, 27
a... Stopper part, 28... Stopper, 29... Guide.

Claims (1)

[Scope of utility model registration request] The open end of the exhaust pipe that communicates with the weir is sealed on one side to form an airtight part, and on the other side, a float is suspended via a flexible member, and the float is centered on the first pivot point. a drop lever rotatably provided as a drop lever, and a drop lever rotatably provided around a second pivot point, having a weight on one side and a float hanging down on the other side, and with respect to the drop lever. A lever having an engaging part that is a part for engaging and releasing the engagement,
A safety device comprising: a safety membrane provided at an open end of a branch pipe of the exhaust pipe; and a rod having a sharp tip facing the safety membrane and a rod having a float at the other end. An automatic weir lodging device characterized by: