JP3105039B2 - Roadside collapse detection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road shoulder collapse detecting device capable of detecting a state in which a shoulder of a raised portion on which a track is laid or a road shoulder of a road has collapsed and of knowing the magnitude of the collapse.

[0002]

2. Description of the Related Art A shoulder of a roadbed or a shoulder of a road (hereinafter referred to as a shoulder) is collapsed by heavy rain. Accidents may occur. Conventionally, to detect such an accident, a method has been adopted in which an observer patrols periodically to detect the accident artificially.

[0003]

Conventionally, a method of artificially knowing a roadside collapse accident has been adopted. Therefore, there is a disadvantage that it takes a long time to visit each dangerous section after heavy rain and to confirm safety. SUMMARY OF THE INVENTION It is an object of the present invention to provide a road shoulder collapse detecting device capable of automatically detecting a collapse of a road shoulder and notifying a remote place.

[0004]

In the first invention of this application, a wire is laid in a section to be monitored. One end of the wire is fixed to the shoulder to be monitored, and the other end is fixed to the shoulder to be monitored via a tension detector. Weights are engaged with the wires at regular intervals, and the weight of the weight is applied to the shoulder to be monitored to constitute a shoulder collapse detection device.

In the second invention of this application, one end of a wire is fixed to a road shoulder to be monitored, and the other end is wound around a winding drum. The winding drum is provided with a wire feeding amount detector. Weights are engaged with the wire at equal intervals. Normally, the weight load is applied to the road shoulder to be monitored to constitute a road shoulder collapse detection device.

[0006]

According to the structure of the present invention, when the road shoulder under monitoring collapses, a weight load is applied to the wire and tension is applied to the wire. Since the weights are provided at regular intervals on the wire, if the scale of collapse of the road shoulder is large, the number of weights hanging on the wire increases. As a result, the tension applied to the tension detector changes depending on the magnitude of the collapse scale.

According to the second invention of this application, when the road shoulder under monitoring collapses, a weight load is applied to the wire, and tension is applied to the wire. By setting the take-up force of the winding drum to a value smaller than the tension generated by the weight load, the wire is fed from the winding drum. The wire feed amount is detected by the wire feed amount detector, and can indicate the collapse of the road shoulder. As the size of the collapse increases, the number of weights hanging on the wire and the amount of the weights flowing down increase. As a result, the scale of collapse can be known according to the amount of wire drawn out.

Therefore, according to the present invention, not only the occurrence of the collapse of the road shoulder but also the magnitude of the collapse can be known in accordance with the detection signal of the tension detector or the wire feeding amount detector.

[0009]

1 to 4 show an embodiment of the first invention of this application. In the figure, reference numeral 10 denotes a road shoulder for monitoring the occurrence of collapse.
In the first invention of this application, the wire 1
Lay 1 One end 11A of the wire 11 is fixed to the road shoulder 10 to be monitored, and the other end 11B is fixed to the road shoulder 10 via the tension detector 12. In this embodiment, the case where the wire 11 is buried in the soil is shown, but the wire 11 may be exposed and laid on the ground surface.

A weight 13 is engaged with the wire 11 at intervals of, for example, about one meter. That is, as shown in FIG. 3, the weight 13 can be made of, for example, a rectangular flat concrete block. A hole 13A is formed in the center of the concrete block, the wire 11 is made to penetrate the hole 13A, and the weight 13 is buried in the soil together with the wire 11. The wire 11 is constituted by a core wire 11C and a coating 11D, for example, as shown in FIG. As the core wire 11C, an unbonded cable made so that the surface is coated with oil to reduce frictional resistance can be used. The coating 11D uses a relatively thick flexible pipe. The thickness of the flexible pipe is selected so that the shape of the hollow portion is not greatly deformed by the weight of the soil when the flexible pipe is buried in the soil.
With such a configuration, the core wire 11C is maintained in a state in which it can freely move in the laying direction despite being buried in the soil.

As the tension detector 12, various existing tension detectors can be used. In this embodiment, for example, as shown in FIG.
Pressure sensor 12 that converts the pressure of oil in 2A into an electric signal
B and a case constituted by a spring 12C. The spring 12C is provided to apply an initial tension to the wire 11, and removes the slack of the wire 11 by the initial tension. 12D shows a fastener. This fastener 1
By rotating and adjusting the 2D nut N ₁ , the wire 11 is adjusted.
Can be adjusted. Also it is possible to set the hydraulic pressure initial value of the hydraulic cylinder 12A to an arbitrary value by the nut N ₂ rotates adjustment.

According to the above-described configuration, when the road shoulder 10 starts to collapse due to heavy rain or the like, the weight 1 near the collapse position.
3 is in a suspended state as shown in FIG. As a result, tension is generated in the wire 11, and the tension is applied to the tension detector 12, the detected pressure value output from the pressure sensor 12B increases, and the collapse of the road shoulder 10 can be notified to a remote place by an electric signal. . As the collapse progresses and the collapse scale increases, the number of weights suspended in the middle gradually increases. Wire 11 according to the number of weights 13 suspended
, The magnitude of the collapse can be known from the electric signal of the pressure sensor 12B while staying in a remote place.

FIG. 5 shows an embodiment of the second invention proposed in this application. In the second invention of this application, one end 1 of the wire 11
1A is fixed to the shoulder 10 and a wire 11 is attached to the other end.
And a wire feeding amount detector 15 for measuring the amount of the wire 11 fed from the winding drum 14 to constitute a road shoulder collapse detection device.

According to the structure of the second aspect of the invention, the winding drum 14 applies an appropriate initial tension to the wire 11 by the winding force held by the winding drum 14, but the winding force is reduced by the weight 13. Set to a value smaller than the tension generated by the weight of By setting the winding force of the winding drum 14 in this way, when the road shoulder 10 collapses and the earth and sand flows down, the weight 13 flows down together with the earth and sand by its weight, and the wire 11 is drawn out from the winding drum 14. The amount of the wire 11 fed from the winding drum 14 is measured by the wire feeding amount detector 15 and converted into an electric signal, so that the occurrence of a road shoulder can be notified to a remote place.

As the scale of collapse increases, weight 13
And the number of the weights 13 flowing down also increases, so that the amount of the wire 11 fed from the winding drum 14 also increases. Therefore, by converting the amount (length) of the wire 11 fed from the winding drum 14 into an electric signal and transmitting the electric signal to a remote place, the scale of the collapse increases from the start of the collapse of the road shoulder 10 while staying in a remote place. You can see how they are doing.

The wire feed amount detector 15 reduces the rotation of the winding drum 14 to 1/10, for example, the rotation axis of the winding drum 14 via a reduction gear train, and transmits the rotation to the potentiometer. The potentiometer can be operated in accordance with the amount, and an electric signal corresponding to the amount of wire 11 drawn out can be transmitted from the potentiometer.

FIG. 6 shows a modified embodiment of the tension detector used in the first invention of this application. In the example of FIG. 6, the tension detector 12 includes a spring 12C that compresses and deforms according to the tension of the wire 11, and a displacement detector 12E that converts the amount of compressive deformation of the spring 12C into an electric signal. Show. In this example, the displacement detector 12E uses a potentiometer. That is, the displacement detector 1
The rotary shaft of the potentiometer constituting 2E is connected to the pulley 12F via an example of a gear wheel. A wire 12G is wound around the pulley 12F, and the wire 12G is fed out and its end is connected to the end of the wire 11. For example, a cholester spring 12H is connected to the pulley 12F.
To provide a winding force for returning the potentiometer to its initial value.

In this configuration, when a load of the weight 13 is applied to the wire 11, tension is generated in the wire 11.
This tension causes the spring spring 12C to be compressed and deformed.
The displacement due to this compression deformation is transmitted to the displacement detector 12E, and an electric signal corresponding to the amount of compression deformation of the spring 12C is transmitted from the displacement detector 12E.

[0019]

As described above, according to the present invention, the occurrence and scale of collapse of the road shoulder 10 are automatically detected,
A remote location can be notified by an electric signal. According to the present invention, a wire 11 is attached to the shoulder 10 to be monitored.
Can be laid, and the entire laying range of the wire 11 can be set as a monitoring range. Therefore, the wire 11 is selected to have a length of, for example, about 50 meters, and the wire 11 of 50 meters and the tension detector 12 or the wire feeding amount detection By sequentially connecting the roadside collapse detection device constituted by the device 15
A relatively long section can be set as the monitoring range. Therefore, it has a feature that a system for monitoring the entire area of a dangerous section can be easily constructed, and its effect is extremely large for practical use.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the first invention of this application.

FIG. 2 is a sectional view for explaining an operation state of the embodiment shown in FIG. 1;

FIG. 3 is a sectional view taken along the line AA shown in FIG. 1;

FIG. 4 is a sectional view showing an example of the structure of the tension detector used in the embodiment shown in FIG.

FIG. 5 is a sectional view showing an embodiment of the second invention of this application.

FIG. 6 is a plan view showing a modified example of the tension detector used in the first invention of this application.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Road shoulder 11 Wire 12 Tension detector 13 Weight 14 Winding drum 15 Wire feeding amount detector

────────────────────────────────────────────────── ─── Continuing on the front page (72) Munekatsu Saito 1-1-1, Gobashi, Aoba-ku, Sendai-shi East Japan Railway Company (72) Inventor Yoshihisa Kaneko 1-2-2, Zofukuji, Suginami-ku, Tokyo 56) References JP-A-4-80618 (JP, A) JP-A-4-52515 (JP, A) JP-A-62-277928 (JP, A) JP-A-59-206522 (JP, A) Sho 61-242214 (JP, A) Japanese Patent Publication Sho 37-7447 (JP, B1) (58) Fields investigated (Int. Cl. ⁷ , DB name) G01L 5/00 G01D 21/00

Claims (4)

(57) [Claims] 1. A. First Embodiment One end is fixed on the shoulder to be monitored,
B. a wire connected at the other end to the tension detector and laid along the shoulder to be monitored; A road shoulder collapse detection device comprising a plurality of weights engaged with the wire, arranged at substantially equal intervals with respect to the wire, and the weight of which is applied to the road shoulder to be monitored. 2. A. One end is fixed on the shoulder to be monitored,
B. a wire wound on the winding drum at the other end; B. a plurality of weights engaged with said wire, substantially equidistant from said wire, and having a weight loaded on the shoulder to be monitored; A road shoulder collapse detection device, comprising: a wire feeding amount detector that measures an amount of the wire fed from the winding drum. 3. The road shoulder collapse detecting device according to claim 1, wherein a tension applied to one end of the wire is applied to the movable rod, and a tension detector having a structure in which a hydraulic pressure in the cylinder is converted into an electric signal by a hydraulic pressure sensor is used. . 4. A tension sensor having a structure in which a tension applied to one end of a wire is applied to a compression spring, a compression deformation amount of the compression spring is measured by a displacement detector, and a tension applied to the wire is measured. 2. The roadside collapse detection device according to 1.