JP5339569B2 - Tilt detector for civil engineering structures - Google Patents

Description

  The present invention relates to a tilt detection apparatus for a civil engineering structure that detects, for example, a protective work outflow around a pier.

  Conventionally, as shown in FIG. 5, a protective work 102 is provided around the pier 101, but the protective work 102 around the pier 101 may flow out due to water increase or the like, and the deformation of the protective work 102 is detected. There is a need to. When the protective work 102 is located on the water, it is possible to check the outflow of the protective work 102 by visual observation, but when the protective work 102 is applied under the water surface 103 as shown in FIG. It is impossible to check the outflow of the protector 102. Therefore, in order to detect the outflow of the protective work 102, a tilt detection device for a civil engineering structure is required.

By the way, conventionally, there is a device that outputs a tilt or vibration of a structure with an electrical contact signal.
FIG. 7 is a schematic view of a conventional tilt detection device (see Patent Document 1 below).
In FIG. 7, reference numeral 111 denotes a conductive pedestal, which has a mortar-shaped surface 112. A conductive sphere 113 is placed on the mortar-shaped surface 112 of the conductive pedestal 111. Reference numeral 114 denotes a conductive cover, which is disposed so as not to contact the conductive base 111.

  Therefore, as shown in FIG. 7A, when the conductive pedestal 111 is in a horizontal state, the conductive sphere 113 is positioned at the center of the mortar-shaped surface 112, and the conductive pedestal 111 and the conductive cover are arranged. 114 is away and is in an electrically OFF state. However, as shown in FIG. 7B, when the conductive pedestal 111 is inclined, the conductive sphere 113 rolls in the inclined direction and bridges the conductive pedestal 111 and the conductive cover 114, so that it is electrically turned on. It becomes the state of. Therefore, it can be detected that the conductive base 111 is inclined.

Of course, by the vibration of the conductive base 111, the conductive spheres 113 so moves, it is possible to detect also the vibration of the conductive base 111.
Moreover, when changing the amount of inclination to detect, it can respond by changing the inclination angle of a mortar-shaped surface or a mountain-shaped surface.
Furthermore, as a conventional tilt detection device, a tilt switch using a conductive liquid is also used (see Patent Document 2 below).
JP 2000-67718 A JP 2000-21274 A

However, as described above, a device that detects the deformation of a structure using a tilt detector and transmits a signal has been developed, but there is no function to stop the transmitted signal and the battery is consumed. It keeps transmitting until. For this reason, there is a problem that even when the deformation has stopped and it has settled down, it cannot be reused, and the movable period depends on the battery life.
In view of the above situation, the present invention provides a civil engineering structure capable of automatically returning to its original state after operation and preparing for the coming operation, and minimizing battery energy consumption. An object of the present invention is to provide an inclination detection device.

In order to achieve the above object, the present invention provides
[1] In a tilt detection apparatus attached to a civil engineering structure, a sphere (1) in which a highly viscous fluid is enclosed, and an inner surface shape of the sphere (1) provided in the sphere (1) at the bottom The tilt switch device (2) having a weight body (7, 14) having a bottom surface shape corresponding to the shape of the tilt switch device (2) includes the conductive base (3, 11) and the conductive base (3). 11) and a conductive sphere (5, 12) movable on the surface and a conductive cover (6, 13) arranged so as not to contact the conductive pedestal (3, 11). , on the upper surface of the weight body (7, 14) comprises an insulating portion for supporting the electrically conductive base (3, 11) and said conductive cover (6, 13) (7A, 14A), said spherical body ( The conductive pedestals (3, 11) are also inclined by the inclination of 1), and the conductive spheres (5,12) according to, characterized in that outgoing output signal by bridging between the conductive base (3,11) and said conductive cover (6, 13).

  According to the present invention, it is possible to automatically return to the original state after the operation of the tilt detection device and prepare for the coming operation, and it is possible to minimize battery energy consumption. And the state of the inclination detection device can be detected, and the deformation of the protective work around the pier can be grasped.

A tilt detection apparatus for a civil engineering structure according to the present invention includes a sphere in which a highly viscous fluid is enclosed, and a weight provided in the sphere and having a bottom shape corresponding to the inner shape of the sphere at the bottom. A tilt switch device, the tilt switch device having a conductive pedestal, a conductive sphere movable on the conductive pedestal, and a conductive cover disposed so as not to contact the conductive pedestal. And an insulating portion that supports the conductive pedestal and the conductive cover is provided on the upper surface of the weight body , and the conductive pedestal is also inclined by the inclination of the sphere, and the conductive sphere is used for the conduction. An output signal is generated by a bridge between the pedestal and the conductive cover .

Hereinafter, embodiments of the present invention will be described in detail.
FIG. 1 is a schematic view of an inclination detecting apparatus attached to a civil engineering structure showing an embodiment of the present invention.
In this figure, 1 is a sphere, 2 is a tilt switch device mounted in the sphere 1, and this tilt switch device 2 includes a conductive pedestal 3 on which a mortar-shaped surface 4 is formed, and its mortar-shaped surface. 4, a conductive sphere 5 that can be moved according to the inclination of the conductive pedestal 3, a conductive cover 6 that is disposed away from the conductive pedestal 3, and the conductive pedestal 3 and the conductive cover 6 are separated by an insulating portion 7 </ b> A. The weight 7 is supported and has the same shape as the inner surface of the sphere 1. Further, the sphere 1 is filled with a highly viscous fluid (for example, oil having a high viscosity) 8 and sealed inside. Reference numeral 9 denotes a civil engineering structure (for example, a protective work around a bridge pier) to which the inclination detecting device is attached.

Hereinafter, the operation of the tilt detection apparatus will be described with reference to FIG.
As shown in FIG. 2A, when the tilt detection device is in a horizontal state, the tilt switch device 2 is in a horizontal position. That is, since the conductive sphere 5 is located at the center of the mortar-shaped surface 4 of the conductive pedestal 3, the conductive pedestal 3 and the conductive cover 6 are separated from each other and are in an electrically OFF state. . However, as shown in FIG. 2B, when the tilt detection device tilts, the tilt switch device 2 tilts simultaneously. Then, the conductive pedestal 3 tilts, the conductive sphere 5 rolls in the tilt direction, and the conductive sphere 5 bridges the conductive pedestal 3 and the conductive cover 6, so that it is electrically turned on. Therefore, it can be detected that the conductive base 3 is inclined. That is, this inclination detection apparatus can detect the deformation of the protective work by being fixed to the protective work of the bridge pier as a civil engineering structure, for example.

  Next, after detecting that the conductive pedestal 3 is tilted, the tilt switch device 2 has the weight body 7 as shown in FIG. It is possible to return to the original position of (a). Therefore, the conductive pedestal 3 can be returned to the horizontal state again, so that the conductive pedestal 3 and the conductive cover 6 are separated from each other and can be electrically turned off.

As described above, after the inclination detecting device detects the inclination, the inclination detecting device can be electrically turned off again, so that it is possible to prepare for an incoming operation and minimize battery energy consumption. Can be suppressed.
In the said Example, although the surface shape of the electroconductive base 3 was formed in mortar shape, it can comprise in a various shape. For example, you may comprise as shown below.

FIG. 3 is a view showing the structure of a tilt switch device of a tilt detection device according to another embodiment of the present invention.
In this embodiment, the tilt switch device is movable in accordance with the inclination of the conductive base 11 having a recess 11A at the center, a flat portion 11B on both sides thereof, and a recess 11C on both sides thereof, and the conductive base 11 being inclined. The conductive sphere 12, the conductive cover 13 disposed away from the conductive pedestal 11, the conductive pedestal 11 and the conductive cover 13 are supported by the insulating portion 14 </ b> A, and have the same inner shape as the sphere (not shown). It has a weight body 14 having a shape. Further, a spherical body (not shown) is filled with a highly viscous fluid (for example, oil having a high viscosity) 15 and sealed inside.

Further, as the tilt switch device, a tilt switch device that operates by tilting the mercury container or changing the liquid surface is known, but by providing a weight at the bottom of such a tilt switch device, The action of the highly viscous fluid existing in the atmosphere may be used to return to the original switch state based on the principle of rising and spilling.
FIG. 4 is a schematic diagram showing an application example of the tilt detection apparatus of the present invention.

In this figure, 21 is a bridge pier, 22 is a protective work around the bridge pier, 23 is an inclination detection device (sensor) having a wireless transmission device attached to the protective work 22, and 24 is attached to the pier 21, and its inclination detection device ( A wireless receiver 25 for collecting output information from the sensor) is a water surface.
In this way, by collecting the output information from the inclination detection device (sensor) 23 by the wireless reception device 24, it is possible to accurately grasp whether or not the protective work 22 around the pier has flowed out, Accordingly, protective measures can be taken.

  In addition, this invention is not limited to the said Example, Based on the meaning of this invention, a various deformation | transformation is possible and these are not excluded from the scope of the present invention.

  The tilt detection device for a civil engineering structure according to the present invention can be used as a deformation detection device or the like for a bridge pier protective work.

It is a schematic diagram of the inclination detection apparatus attached to the civil engineering structure which shows the Example of this invention. It is a schematic diagram which shows operation | movement of the inclination detection apparatus of this invention. It is a figure which shows the structure of the inclination switch of the inclination detection apparatus which shows the other Example of this invention. It is a figure which shows the example of application of the inclination detection apparatus of this invention. It is a photograph which shows the protection work of the conventional pier. It is a schematic diagram when the protection work of the conventional pier is under the water surface. It is a schematic diagram of the conventional inclination detection apparatus.

DESCRIPTION OF SYMBOLS 1 Sphere 2 Inclination switch apparatus 3,11 Conductive base 4 Mortar-shaped surface 5,12 Conductive sphere 6,13 Conductive cover 7,14 Weight body 7A, 14A Insulation part 8,15 High viscous fluid 9 Civil engineering structure 11A Recessed part 11B Flat part 11C Indented part 21 Bridge pier 22 Protective work around the pier 23 Inclination detection device (sensor) provided with a wireless transmission device
24 Wireless receiver 25 Water surface

Claims (1)

In the inclination detector attached to the civil engineering structure,
A tilt switch device comprising a sphere in which a highly viscous fluid is enclosed, and a weight switch provided in the sphere and having a bottom surface corresponding to the shape of the inner surface of the sphere at the bottom; a conductive base, and a conductive spherical body movable on said conductive base, together with the said conductive base comprises a conductive cover which is arranged so as not to contact, said upper surface of the weight body An insulating portion that supports the conductive pedestal and the conductive cover; the conductive pedestal is also inclined by the inclination of the sphere; and by the bridge between the conductive pedestal and the conductive cover by the conductive sphere inclination detecting apparatus of civil engineering structures, characterized by originating the output signal.