JPH0594717U - Slope failure detector - Google Patents

Abstract

(57) [Abstract] [Purpose] Accurate detection of slope failure without malfunction. [Structure] A support frame 1 erected on the downstream side of the slope 8,
The pressure receiving plate 3 rotatably hung above the support frame 1, the spring member 4 contracted between the support frame 1 and the pressure receiving plate 3, and the support frame 1 or the pressure receiving plate 3 are installed. It is composed of a sensor that detects rotation.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a slope failure detection device for detecting the failure of a slope near a road or railroad track.

[0002]

[Prior Art]

 Every year, accidents frequently occur in which slopes around roads and railways collapse due to heavy rainfall. When this kind of collapse accident occurs, it is important to know the collapse early so as to carry out recovery work and regulate traffic.

[0003]

[Problems to be solved by the device]

 To date, no effective measures have been proposed to monitor for such slope failures.

[0004]

[Purpose of the present invention]

 The present invention has been made in view of the above points, and an object of the present invention is to provide a slope collapse detecting device having excellent durability and capable of accurately detecting without malfunction.

[0005]

[Means for solving problems]

 The present invention includes a support frame that is erected on the downstream side of the slope, a pressure receiving plate that rotatably hangs above the support frame, a spring member that is compressed between the support frame and the pressure receiving plate, and a support frame or pressure receiving plate. This is a slope collapse detection device that is installed and configured with a sensor that detects the rotation of the pressure receiving plate.

[0006]

Embodiment 1 An embodiment of the present invention will be described below with reference to the drawings. <B> Overall Configuration FIG. 1 shows an example of the collapse detection device according to the present invention. The collapse detection device includes a rigid support frame 1 standing upright on the slope, a pressure receiving plate 3 rotatably connected to the upper end of the support frame 1 via a hinge 2, and between the support frame 1 and the pressure receiving plate 3. It is composed of a compressed spring member 4 and a sensor 5 arranged on the front surface of the support frame 1 or the rear surface of the pressure receiving plate 3.

<B> Support Frame The support frame 1 is a rigid body for supporting the pressure receiving plate 3, and is composed of a plurality of columns 11 and beams 12 horizontally connecting the columns 11, and a retaining member 13.

<C> Pressure Receiving Plate The pressure receiving plate 3 is a plate for receiving collapsed earth and sand, and its shape and dimensions are not limited. A spring member 4 is contracted between the support frame 1 and the lower portion of the pressure receiving plate 2. This spring material 4 is for preventing the pressure receiving plate 2 from rotating and being easily pressed against the sensor 5 due to an animal collision or a strong wind, and for restricting the operating position of the sensor 5. For example, a coil spring or a known absorber is used. Can be used. Further, as shown in FIG. 2, if the bolt 6 is penetrated between the support frame 1 and the pressure receiving plate 3 not shown, and the nut 62 is screwed to the penetrating end of the bolt 6 via the washer 61, the rotation operation of the nut 62 is performed. By adjusting the spring force, the operating position of the sensor 5 can be arbitrarily set.

<D> Sensor The sensor 5 is a known sensor whose electric resistance changes due to pressurization. The sensor 5 shown in FIG. 3 is made of conductive rubber that combines silicon rubber 51 and metal particles 52 and rapidly changes the electrical resistance from an insulating state (several mega ohms or more) to a conducting state (several ohms or less) in response to a pressure stimulus. FIG. 4 shows an example of a cord switch sensor in which plain weave wires 54, 54 are laminated on both sides of a conductive rubber 53 and the whole is covered with a silicon rubber 55 for high voltage. Regarding how to use the detection signal from the sensor 5, it is transmitted to a remote monitoring center for processing, or the collapse detection device 1 is equipped with a siren or signal lamp that operates in conjunction with the detection signal of the sensor 5, A method that can be used to notify the slope failure using light, light, or a combination of these.

[0010]

[Action]

 Next, the operation of the collapse detection device 1 will be described.

As shown in FIG. 5, a plurality of collapse sensing devices 1 are provided at predetermined intervals with the pressure receiving plate 3 facing the slope 8 near the line 7. When the slope 8 collapses, the collapsed sand 9 collides with the collapse sensing device 1. Then, the pressure receiving plate 3 rotates in the direction of the line 7 while resisting the spring force of the spring member 4. When the back surface of the pressure receiving plate 3 comes into contact with the sensor 5, the sensor 5 outputs a collapse signal of earth and sand. Upon receiving the signal from the sensor 5, a siren or a signal lamp is activated, or the signal from the sensor 5 is transmitted to a remote monitoring center so that the occurrence of collapse can be instantly known. If the output signal of each sensor 5 can be identified, the collapse position can be known at the same time.

[0012]

[Other modifications]

 If the surface of the pressure receiving plate 3 is treated with a fluororesin and colored in black, malfunction due to snow can be prevented.

[0013]

[Effect of the device]

 Since the present invention is as described above, the following effects can be obtained. <B> Since the configuration is simple, installation work and maintenance inspection are easy. <B> Durability is less likely to occur due to natural conditions such as wind and rain, snowfall, and temperature, and durability is excellent. <C> Since the pressure receiving plate is urged by the spring material, it is possible to avoid post-motion due to wind and rain or animal contact. <D> Since it is possible to know the slope failure early, it is extremely advantageous in dealing with the slope failure. <E> Not only for slope collapse but also for avalanche detection, it is versatile. <F> By using a non-contact type sensor, stable measurement accuracy can be obtained, malfunctions due to disturbances of birds and beasts can be avoided, and the cost can be further reduced. <G> Since the sensor restores to overload, it is possible to use the sensor repeatedly.

[Brief description of drawings]

FIG. 1 is a perspective view of a collapse detection device with a part cut away.

FIG. 2 is a partially enlarged view of the lower portion of the pressure receiving plate.

FIG. 3 is an explanatory diagram of the operating principle of the sensor.

FIG. 4 is an explanatory diagram of the operating principle of another sensor.

FIG. 5 is a side view of the collapse detection device at the time of slope failure.

Claims (1)

[Scope of utility model registration request] 1. A support frame erected on the downstream side of the slope, a pressure receiving plate rotatably hung above the support frame, a spring member contracted between the support frame and the pressure receiving plate, and a support frame or pressure receiving plate. A slope failure detection device that is installed on the ground and is composed of a sensor that detects the rotation of the pressure receiving plate.