JP6363917B2 - Relative displacement display device between two points - Google Patents

Description

  The present invention measures the relative displacement between two points, such as measuring the maximum interlayer displacement of a multilayer structure during an earthquake and displaying the damage state of the multilayer structure, and displaying the deformation state of the structure. The present invention relates to a relative displacement display device between two points to be used.

  When a multi-story structure such as a multi-storey building or multi-story civil engineering structure is subjected to a large earthquake, it is necessary to check whether the multi-story structure is safe and can be reused. is there. The safety of a multi-layered structure can be judged based on the degree of damage to the structural parts such as the framework, bracing, and wall material of the main part and the displacement between layers. An interlayer displacement detection device that can be quickly and easily confirmed has been proposed, and is disclosed, for example, in Patent Document 1.

  The interlaminar displacement detection device of this document 1 is fixed to an upper floor or a lower floor facing an interlayer to be measured, and has a scale having a circle with a diameter corresponding to the interlaminar displacement, and one end is slidable around the center of the scale. The other end is configured to include a rigid support column fixed to the lower floor or the upper floor facing the scale and the other side with the other end in contact, and a recording tool such as a pen or a pencil attached to one end of the rigid support column. Before the earthquake, the recording tool is positioned at the center of the circle of the scale, and after the earthquake, the interlayer displacement is obtained from the recording position by the recording tool on the scale.

  However, in this inter-layer displacement detector, the scale moves with the upper or lower floor during an earthquake, the rigid support column and the recording tool move with the lower or upper floor, and the recording tool moves on the scale from the start of the earthquake. Since it slides according to the movement of the upper floor and the lower floor continuously until the end, and the record is left on the scale, the record left on the scale must be a complicated recording line. It is difficult to immediately determine the maximum interlayer displacement and residual displacement of a multilayer structure and confirm the safety of the multilayer structure unless it is a professional engineer. In this case, in order to obtain the maximum interlayer displacement and the residual displacement from the record on the scale, the scale is collected and analyzed by an expert engineer.

Therefore, the applicant of the present application can obtain the maximum interlayer displacement of the multilayer structure at the time of an earthquake, grasp the damage state of the multilayer structure, and confirm its safety, even if it is not a specialized engineer. Can be applied to any type of structure such as steel structure (S structure), reinforced concrete structure (RC structure), steel reinforced concrete structure (SRC structure), can be applied to buildings such as detached houses, etc. In order to reduce the size of the device and make it possible to install it inside the partition wall, an inter-layer displacement measuring device has been created and proposed in Patent Document 2.
The interlaminar displacement measuring apparatus of this document 2 has a scale having a scale fixed to the upper layer, a pointer slidably disposed on the scale, a pointer for pointing to the scale of the scale, and fixed to the lower layer. And an interlayer displacement transmission member that moves along with the relative displacement between them and pushes and moves the pointer on the scale from the measurement base point by the relative displacement between the layers, and measures the maximum interlayer displacement by the stop position and scale of the pointer. The residual displacement is measured by the stop position and the scale of the interlayer displacement transmission member.

Japanese Patent Laid-Open No. 11-201703 JP 2010-249711 A

However, the conventional interlayer displacement measuring apparatus has the following problems.
(1) In order to accurately measure the interlayer displacement, it is necessary to ensure sufficient rigidity in the jig for supporting the interlayer displacement measuring device, and there is a limit to downsizing the entire device.
(2) Since a jig for supporting the interlayer displacement measuring device is attached to the beam, depending on the attachment position, there is a possibility that accurate interlayer displacement cannot be measured due to the influence of the deformation of the beam at the time of the earthquake.

  In addition, based on the results of the recent Great East Japan Earthquake, at the time of the occurrence of a major earthquake, the buildings in the disaster area and facilities that accept disaster victims and people who are unable to return home will confirm early whether the buildings and facilities are safe. In this type of interlaminar displacement measuring apparatus, it is important that the safety of buildings and facilities can be easily confirmed and judged at an early stage without being a specialized engineer.

  The present invention solves such a conventional problem. As an interlaminar displacement measuring apparatus of this type, the maximum deformation (maximum interlaminar displacement) of a multilayer structure at the time of an earthquake can be achieved even without a specialized engineer. It is possible to easily confirm and judge the damage status of multilayer structures and their safety, to improve the accuracy of measured values, to simplify the equipment configuration and to make maintenance unnecessary or easy, and to make the equipment compact and lightweight. It can be installed inside the partition wall, etc., can be applied to structures of any structural type such as steel structure (S structure), reinforced concrete structure (RC structure), steel reinforced concrete structure (SRC structure), detached house It can be applied to buildings such as houses, can be easily installed in new buildings or existing buildings, and can be used to expand the usage and easily understand the danger of falls such as temporary scaffolding due to earthquakes and strong winds. Etc. can be also used as a vessel, for the purpose of.

In order to achieve the above object, a relative displacement display device between two points of the present invention comprises:
A point-to-point relative displacement display device that is installed between two predetermined points for measuring deformation due to external force of the structure, measures the amount of relative displacement between the two predetermined points, and displays the state of deformation of the structure. Because
A display device installed at an arbitrary position of the structure, activated by connection with a power source, and informing the degree of deformation of the structure;
One end is fixed to one of the two predetermined points and arranged between the two predetermined points, and the relative displacement between the two predetermined points is measured by measuring the relative displacement amount between the two predetermined points. A measuring member;
A casing, a movable member that is linearly movable within the casing, and includes a movable member that includes an insulating portion and a current-carrying portion, and can contact the insulating portion or the current-carrying portion by moving the movable member within the housing. A contact on the power source side and a contact on the display device side for electrically connecting the power source and the display device, and operatively connecting the tip of the movable member to the other end of the measurement member The measuring member is installed at the other of the two predetermined points and is operated by the measuring member that is pulled between the two predetermined points when the relative displacement between the two predetermined points reaches a level exceeding a predetermined value. A switch for electrically connecting the power source and the display device to operate the display device ;
With
The level exceeding the predetermined value is divided into at least two stages: a survey level that requires a structure to be surveyed and a structure use prohibition level that prohibits the use of the structure. There are at least two display formats for notifying the degree of deformation of the structure according to the level, the measuring member is composed of at least two wires having different lengths, the short wire is for the investigation level, and the long wire is the structure For the object use prohibition level, the switch is provided for each wire, and a single energization unit is disposed on the movable member so that the display device can be switched to a display format corresponding to each level. A set of contacts on the power supply side and contacts on the display device side are arranged in the casing,
Structure is subjected to an external force, when the relative displacement amount between the two predetermined points exceeds the predetermined value, notifying the degree of deformation of the structure in accordance with the relative displacement,
This is the gist.

Moreover, each part of this relative displacement display device between two points is embodied as follows.
(1) The display device is selected from a light emitting device for notifying the degree of deformation of the structure with colored light, a sound generating device for notifying with sound or a sound including an alarm sound, or a light emitting / sound generating device for notifying both. The
( 2 ) Used as an interlaminar displacement measuring device for measuring interlaminar displacement of a multilayer structure. In this case, a measuring member is attached with a switch along each diagonal line between diagonals in a frame of each hierarchical level. A display device is installed at an arbitrary position.
( 3 ) Installed between structures and used as a displacement measuring device for measuring the relative displacement between the structures. In this case, a measuring member is switched between the upper parts of the structures. attached together, the display device at any position between the structures are installed.

In the relative displacement display device between two points of the present invention, the following special effects are achieved by the above-described configurations.
(1) In this apparatus, when the structure receives an external force and the relative displacement between two predetermined points for measuring the deformation of the structure exceeds a predetermined value, it is necessary to investigate at least the structure. When the investigation level and the structure use prohibition level that prohibits the use of the structure are reached, the power supply and the display device are electrically connected by operating the switch by a measuring member pulled between two predetermined points. Since the display device is operated to notify the degree of deformation of the structure according to the relative displacement amount, even if it is not a professional engineer, this notification can cause deformation of the structure ( Interlayer displacement) can be obtained, and the damage status of the structure and its safety can be easily confirmed and judged.
(2) Since this apparatus can directly measure between two predetermined points where deformation due to external force of the structure occurs, it is possible to improve the accuracy of the measurement value.
(3) This device is composed of a display device that generates light and sound, a measuring member made of a wire, a movable member having a casing, an insulating portion and a current-carrying portion, a contact on the power source side, and a switch on the display device side. Therefore, the apparatus configuration is simple, and maintenance can be unnecessary or easy.
(4) This device comprises a display device that generates light and sound, a measurement member made of a wire, and a switch attached to the end of the measurement member, and the measurement member between two predetermined points that cause deformation due to an external force of the structure. Since the light emitting device is installed at an arbitrary position with the switch attached, a particularly large support member is not required, the entire device can be reduced in size and weight, and can be installed inside the partition wall.
(5) In this device, a measuring member made of a wire is attached together with a switch between two predetermined points that cause deformation due to external force of the structure, and the display device is installed at an arbitrary position. It can be applied to structures of any structural type such as steel (RC) or steel reinforced concrete (SRC).
(6) In this device, a measuring member made of wire is attached with a switch between two predetermined points that cause deformation due to external force of the structure, and the display device is installed at an arbitrary position, so it can also be applied to buildings such as detached houses can do.
(7) With this device, a measuring member made of a wire is attached with a switch between two predetermined points that cause deformation due to external force of the structure, and the display device is installed at an arbitrary position. Can be installed.
(8) Furthermore, this device can be used as a device that can be used for expanding applications and easily grasping the danger of the temporary scaffold falling due to an earthquake or strong wind.

The front view which shows the application example of the relative displacement display apparatus between 2 points | pieces in one embodiment of this invention, and this apparatus Front view showing the schematic configuration of the device, especially the switch The figure which shows the degree of the interlayer displacement of the multilayer structure (building) to which the same device is applied and the deformation of the multilayer structure (building) Front view of the device with some changes The figure which shows the other application example of the apparatus The figure which expands and shows the principal part (A part) of FIG.

  Next, embodiments for carrying out the present invention will be described with reference to the drawings. 1 and 2 show a relative displacement display device between two points. As shown in FIGS. 1 and 2, the two-point relative displacement display device M is installed between two predetermined points for measuring deformation due to an external force of the multilayer structure, and the relative displacement between the two predetermined points. It measures the amount and displays the state of deformation of the multi-layer structure. It is installed at any position of the multi-layer structure, operates by connecting to the power sources B1 and B2, and notifies the degree of deformation of the multi-layer structure. Display device 1 and one of the two predetermined points fixed at one end and disposed between the two predetermined points, followed by a relative displacement between the two predetermined points, and a relative displacement amount between the two predetermined points When the relative displacement amount between the two predetermined points reaches a level exceeding a predetermined value, the measuring member 2 is measured and is connected to the other end of the predetermined two points. The power supply B1 or B2 and the display device 1 are electrically operated by the measuring member 2 pulled between two predetermined points. Subsequently, a switch 3 for operating the display device 1 is provided. The multi-layered structure receives an external force by the display device 1, the measurement member 2, and the switch 3, and a relative displacement amount between two predetermined points is predetermined. When the value is exceeded, the degree of deformation of the multilayer structure corresponding to the relative displacement amount is notified.

In the device M, the display device 1 is a light emitting device that notifies the degree of deformation of the multilayer structure with colored light, a sound generating device that notifies with sound or a sound including an alarm sound, or both. In this case, a light emitting device (hereinafter referred to as the light emitting device 1) is employed.
Further, in this case, the “level exceeding the predetermined value” when the relative displacement amount between the two predetermined points exceeds the predetermined value is the level “necessary to investigate the multilayer structure”. The light-emitting device 1 is informed of the degree of deformation of the multi-layer structure according to each level, divided into at least two stages of “inspection level” and “structure use prohibition level” that prohibits the use of the multi-layer structure. In this case, the yellow light-emitting unit 11 that emits yellow light for informing the “investigation level”, the power source B1 for operating the same, and the “structure use prohibition level” are displayed. It is composed of a red light emitting unit 12 that emits red light for notification and a power source B2 for operating the red light emitting unit 12, and the yellow light emitting unit 11 and the power source B1 are connected by the switch 3 to connect the yellow light emitting unit 11 to the yellow light emitting unit 11. Of emit light, which is a red light emitting unit 12 to emit red light by the red light-emitting unit 12 and the power source B2 is connected.

In this apparatus M, the measuring member 2 is made of a wire, and in this case, a wire is adopted. This wire is formed in an appropriate length in consideration of the length between two predetermined points, the size of the switch 3, the operating range of the switch 3, and the like.
In this case, as described above, the “level exceeding the specified value” is the “inspection level” that requires investigation of the multilayer structure, and the “prohibition of use of the structure” prohibits the use of the multilayer structure. The measuring member 2 is composed of a single wire (wire), one end is fixed to one of two predetermined points, and the other end is connected to a predetermined 2 through a switch 3. It is connected to the other of the points, arranged between two predetermined points, and is driven by a relative displacement between the two predetermined points and pulled to measure the amount of relative displacement between the two predetermined points. .

In this apparatus M, the switch 3 is disposed so as to be linearly movable in the housing 30, and includes a movable member 31 including an insulating portion and a current-carrying portion, and a movable member 31 in the housing 30. The contacts 321 and 322 on the power source side and the contacts on the light emitting device side for electrically connecting the power source B1 or B2 and the light emitting device 1 are disposed so as to be able to contact the insulating portion or the energizing portion of the movable member 31 by the movement of 323 and 324.
In this case, as described above, the “level exceeding the specified value” is the “inspection level” that requires investigation of the multilayer structure, and the “prohibition of use of the structure” prohibits the use of the multilayer structure. The switch 3 has at least two current-carrying parts b1 and b2 movable in the movable member 31 so that the light-emitting device 1 can be switched to a light-emitting format (display format) corresponding to each level. (In this case, the movable member 31 is a pin made of, for example, a (round) bar, and in order from the front end to the rear end, an insulating portion a1 made of an insulator band, a conductor. A first energizing portion b1 made of a strip of metal, an insulating portion a2 made of an insulator strip, a second energizing portion b2 made of a conductor strip, and an insulating portion a3 made of an insulator strip, each having a predetermined length) , At least in a predetermined housing 30 Two sets of contacts 321 and 322 on the power source side and contacts 323 and 324 on the light emitting device side are arranged at predetermined intervals in the moving direction of the movable member 31 (in this case, on the moving path of the movable member 31 in the housing 30). The first power source side contact 321 and the light emitting device side contact 323 are installed at predetermined positions on the tip side, and the second power source side contact 322 and the light emitting device side contact 324 are installed at intermediate predetermined positions, respectively) The measuring member 2 is operatively connected to the tip of the movable member 31 of the switch 3. In this way, the movable member 31 is normally held in the housing 30, and the insulating portions a 1 and a 2 of the movable member 31 are the first power source side contact 321, the light emitting device side contact 323, and the second power source side, respectively. When the multi-layer structure is deformed by an external force and is relatively displaced between two predetermined points, the movable member 31 is moved by the measuring member 2. When the relative displacement between two predetermined points exceeds a predetermined value and reaches the “inspection level” or “structure use prohibition level” region, the movable member 31 moves by a predetermined amount. The first energizing part b1 of the member 31 is between the first power supply side contact 321 and the light emitting device side contact 323, or the second energizing part b2 is the second power supply side contact 322 and the light emitting device side contact. 324 is in contact with the light emitting device 1 Yellow light emitter 11 and the power supply B1, or the red emitting section 12 and the power source B2 is adapted to electrically connect.

  Thus, in the relative displacement display device M between the two points, when the multilayer structure receives an external force and the relative displacement amount between the two predetermined points for measuring the deformation of the multilayer structure exceeds a predetermined value. The switch 3 is actuated by the measuring member 2 pulled between two predetermined points, the movable member 31 is moved in the housing 30, and the first energization part b1 of the movable member 31 is a contact on the first power source side. 321 and the light emitting device side contact 323, or the second current-carrying part b <b> 2 comes into contact with the second power source side contact 322 and the light-emitting device side contact 324 to be in the energized state, and the yellow light-emitting part of the light-emitting device 1 11 and the power source B1 or the red light emitting unit 12 and the power source B2 are electrically connected to operate the yellow light emitting unit 11 or the red light emitting unit 12, and the yellow light emitting unit 11 or the red light emitting unit 12 emits yellow light or red light. Multi-layer according to the relative displacement between two predetermined points emitting light The degree of deformation of the creation, that reports the "Survey level" or "structure disabled level".

FIG. 1 also shows a case where the two-point relative displacement display device M is used as an interlayer displacement display device for measuring and displaying the interlayer displacement of a multilayered building A1. In such a multi-layered building A1, the distance between the diagonals in the frame of each level is between two predetermined points for measuring the deformation of the building A1, and the distance between the diagonals (that is, the lower surface of the beam on the upper floor). The measuring member 2 is mounted along with each diagonal line with the switch 3 between the corner of the lower floor and the upper surface of the beam on the lower floor opposite to the corner, and at any position in each layer, in this case, near one pillar. The light emitting device 1 is installed. The measuring member 2 has an appropriate length in consideration of the length of the diagonal line in the frame, the size of the switch 3 (such as the length of the movable member 31), the operating range of the switch 3 (the moving range of the movable member 31), and the like. Formed.
In this case, when the building A1 receives an external force such as an earthquake, as shown in FIG. 3A, the diagonal length L between the diagonals increases by a predetermined value δ0 at the interlayer deformation angle θ0. If the increase is within this range, the building A1 can be used continuously. As shown in FIG. 3B, the length L of the diagonal line between the diagonals is a predetermined value at the interlayer deformation angle θ1. Δ1 increases beyond the value δ0, reaches the area of “investigation level”, and the investigation of the building A1 is necessary, and as shown in FIG. 3C, the diagonal line between one diagonal at the interlayer deformation angle θ2 The length L exceeds a predetermined value δ0 and increases by δ1 + δ2, reaches the “building use prohibition level” region, and the use of the building A1 is prohibited.
When such a building A1 receives an external force such as an earthquake and is displaced to an interlayer deformation angle θ0, and the diagonal length L between one diagonal increases to a predetermined value δ0, the measuring member 2 pulled between the diagonals The switch 3 is actuated by this to move the movable member 31 within the housing 30 by δ0. In this case, the insulating part a1 of the movable member 31 is in contact between the contact 321 on the first power supply side and the contact 323 on the light emitting device side. However, the insulating part a2 is in a non-energized state while being in contact between the second power source side contact 322 and the light emitting device side contact 324, and the yellow light emitting unit 11 and the red light emitting unit 12 of the light emitting device 1 are both The power supply B1, B2 is not electrically connected and does not operate. Then, when the building A1 is displaced to the interlayer deformation angle θ1, and the length L of the diagonal line between the diagonals exceeds the predetermined value δ0 and the increase amount increases within the range of δ1, the measuring member that is pulled between the diagonals 2 activates the switch 3 to move the movable member 31 within the housing 30 by δ0 + increment (δ1 or less), and the first energization portion b1 of the movable member 31 is connected to the first power supply side contact 321 and the light emitting device side. Between the first and second contacts 323 to be energized (the second energization part b2 of the movable member 31 is away from the second power source side contact 322 and the light emitting device side contact 324), and the light emitting device The yellow light-emitting unit 11 and the power source B1 are electrically connected to operate the yellow light-emitting unit 11 and emit yellow light from the yellow light-emitting unit 11 so as to correspond to a predetermined amount of relative displacement between two points. The degree of deformation of the object, that is, the “investigation level” is notified. Further, when the building A1 is displaced to the interlayer deformation angle θ2, and the diagonal length L between the diagonals exceeds a predetermined value δ0 and the increase amount δ1 + increases within the range of δ2, the measurement is pulled between the diagonals. The switch 3 is actuated by the member 2, and the movable member 31 moves in the housing 30 by δ0 + δ1 + increase amount (δ2 or less). The second energization part b2 of the movable member 31 comes into contact with the second power source side contact 322 and the light emitting device side contact 324 to be energized by separating from the device side contact 323 and in a non-energized state. The red light emitting unit 12 of the apparatus 1 and the power source B2 are electrically connected to operate the red light emitting unit 12, and the red light emitting unit 12 emits red light to correspond to a predetermined amount of relative displacement between two points. Degree of deformation, ie “building use ban level” To notify.

  As described above, in the relative displacement display device M between the two points, the multilayer structure (building A1) receives an external force, and between two predetermined points for measuring the deformation of the multilayer structure (building A1). When the relative displacement exceeds a predetermined value, the switch 3 is operated by the measuring member 2 pulled between two predetermined points to operate the power source B1 or B2 and the light emitting device 1, in this case, the light emitting units 11 of two different colors. Or 12 is electrically connected, and the light emitting device 1 is operated to notify the degree of deformation of the multilayer structure (building) according to the relative displacement amount, and in this case, display is performed with two different colors of light emission. Because of this, even if you are not a professional engineer, you can obtain the deformation (interlayer displacement) of the multilayer structure (building A1) at the time of the earthquake, and the damage status of the multilayer structure (building A1) Safety can be easily confirmed and judged.

Further, the device M has the following advantages.
(1) In this apparatus M, since the multilayer structure (building A1) can be directly measured between two predetermined points that cause deformation due to external force, in this case, the diagonal of the frame of the multilayer structure (building A1), The accuracy of measurement values can be improved without being affected by deformation or the like.
(2) The device M includes a light emitting device 1, a measuring member 2 made of a wire, a casing 30, a movable member 31 having insulating portions a1, a2, and a3 and energizing portions b1 and b2, power source side contacts 321 and 322, and Since it is configured by the switch 3 including the contacts 323 and 324 on the light emitting device side, the device configuration is simple and maintenance can be unnecessary or easy.
(3) The device M includes a light emitting device 1, a measuring member 2 made of a wire, and a switch 3 attached to an end of the measuring member 2, and two predetermined points that cause deformation due to an external force of the multilayer structure (building A1). In this case, the measuring member 2 is attached together with the switch 3 between the diagonals of the frame of the multilayer structure (building A1), and the light-emitting device 1 is installed at an arbitrary position. It can be reduced in size and weight, and can be installed inside a partition wall.
(4) In this apparatus M, the measuring member 2 is connected with the switch 3 between two predetermined points that cause deformation due to external force of the multilayer structure (building A1), in this case, between the diagonals of the frame of the multilayer structure (building A1). Since the mounting and light emitting device 1 is installed at an arbitrary position, it can be applied to any structure (building) of steel structure (S structure), reinforced concrete structure (RC structure), or steel reinforced concrete structure (SRC structure). It can also be applied to buildings such as detached houses, and can be easily installed in new or existing buildings.

  In this embodiment, a level exceeding a predetermined value is an “inspection level” that requires an investigation of the multilayer structure (building A1), and prohibits the use of the multilayer structure (building A1). The light emitting device 1 is divided into at least two stages of “structure (building) use prohibition level”, and the light emitting device 1 emits at least two different color light emitting formats (displays) for notifying the degree of deformation of the multilayer structure (building A1) corresponding to each level. The measuring member 2 is made of a single wire (wire), and the switch 3 has at least two current-carrying parts b1 in the movable member 31 so that the light-emitting device 1 can be switched to a light-emitting type corresponding to each level. , B2 are arranged at predetermined intervals in the moving direction of the movable member 31, and at least two sets of power source side contacts 321 and 322 and light emitting device side contacts 323 and 324 are arranged in the moving direction of the movable member 31 in the housing 30. Predetermined Although arranged at intervals, when the relative displacement between two predetermined points exceeds a predetermined value, the degree of deformation of the multilayer structure (building A1) corresponding to each level is notified. Instead, as shown in FIG. 4, a level exceeding a predetermined value similarly indicates a “survey level” that requires investigation of the multilayer structure (building A1), and a multilayer structure (building). The light emitting device 1 is similarly divided into at least two stages of “structure (building) use prohibition level” for prohibiting the use of A1), and the degree of deformation of the multilayer structure (building A1) corresponding to each level is similarly determined. It has at least two light emission formats to be notified, and at least two wires (wires) with different lengths are used for the measurement member 2, the short wire (wire) is for the investigation level, and the long wire (wire) is the structure For use (building) banned level, H3 is provided for each measuring member 2 having a different length, and each energizing portion is arranged on the movable member so that the light emitting device 1 can be switched to the light emission format corresponding to each level, and one set in the housing When the relative displacement between two predetermined points exceeds a predetermined value, the multilayer structure (building) is deformed according to each level. The degree of the above may be notified, and even in this way, the same effect as described above can be obtained.

The two-point relative displacement display device M is installed between structures and can be used as a displacement measuring device that measures the amount of relative displacement between the structures. This is shown in FIGS. In this application example, one structure is, for example, a multi-layered building housing A2, and the other structure is, for example, a temporary scaffold A3. In the present apparatus M, the temporary scaffold A3 is inclined by an external force such as an earthquake or a strong wind, This is used when the risk of falling is easily grasped.
In this case, the measuring member 2 is attached together with the switch 3 between the building frame A2 and the temporary scaffolding A3, and the light emitting device 1 is installed at an arbitrary position between the building frame A2 and the temporary scaffolding A3. The light emitting device 1, the measurement member 2, and the switch 3 are as described above.
In this way, when the temporary scaffold A3 is tilted by an external force such as an earthquake or a strong wind, and the distance (relative displacement) between the building scaffold A2 and the temporary scaffold A3 exceeds a predetermined value, The switch 3 is operated by the measuring member 2 pulled between the temporary scaffold A3 to electrically connect the power source B1 or B2 and the light emitting device 1, in this case, the light emitting portions 11 or 12 of two different colors. , And the degree of deformation of the temporary scaffold A3 in accordance with the relative displacement amount is different in two colors of light emission. In this case, the yellow light emission indicates the “(temporary scaffold) investigation level” and the red light emission indicates “Temporary scaffold use prohibition level” is displayed.
By doing in this way, temporary scaffold A3 can be easily grasped | ascertained about the danger of tilting by the external force, such as an earthquake and a strong wind, and falling.

  In each of the above-described embodiments, the case where the light emitting device is employed as the display device has been described. However, instead of the light emitting device, a sounding device that notifies by sound such as voice or alarm sound is used, or with these light emitting devices. By using in combination with a sound generator, the degree of deformation of the structure may be notified by voice or alarm, or it may be reported by combining colored light and voice or alarm. In any case, the same effects as those of the above embodiments can be obtained.

M 2 point relative displacement display device B1 power supply B2 power supply A1 building A2 building frame A3 temporary scaffold 1 display device (light emitting device)
DESCRIPTION OF SYMBOLS 11 (Yellow) Light emission part 12 (Red) Light emission part 2 Measuring member 3 Switch 30 Case 31 Movable member a1, a2, a3 Insulation part b1 (1st) Current supply part b2 (2nd) Current supply part 321 (1st) Power source side contact 322 (first) light emitting device side contact 323 (second) power source side contact 324 (second) light emitting device side contact

Claims (4)

A point-to-point relative displacement display device that is installed between two predetermined points for measuring deformation due to external force of the structure, measures the amount of relative displacement between the two predetermined points, and displays the state of deformation of the structure. Because
A display device installed at an arbitrary position of the structure, activated by connection with a power source, and informing the degree of deformation of the structure;
One end is fixed to one of the two predetermined points and arranged between the two predetermined points, and the relative displacement between the two predetermined points is measured by measuring the relative displacement amount between the two predetermined points. A measuring member;
A casing, a movable member that is linearly movable within the casing, and includes a movable member that includes an insulating portion and a current-carrying portion, and can contact the insulating portion or the current-carrying portion by moving the movable member within the housing. A contact on the power source side and a contact on the display device side for electrically connecting the power source and the display device, and operatively connecting the tip of the movable member to the other end of the measurement member The measuring member is installed at the other of the two predetermined points and is operated by the measuring member that is pulled between the two predetermined points when the relative displacement between the two predetermined points reaches a level exceeding a predetermined value. A switch for electrically connecting the power source and the display device to operate the display device;
With
The level exceeding the predetermined value is divided into at least two stages: a survey level that requires a structure to be surveyed and a structure use prohibition level that prohibits the use of the structure. There are at least two display formats for notifying the degree of deformation of the structure according to the level, the measuring member is composed of at least two wires having different lengths, the short wire is for the investigation level, and the long wire is the structure For the object use prohibition level, the switch is provided for each wire, and a single energization unit is disposed on the movable member so that the display device can be switched to a display format corresponding to each level. A set of contacts on the power supply side and contacts on the display device side are arranged in the casing,
Structure is subjected to an external force, when the relative displacement amount between the two predetermined points exceeds the predetermined value, notifying the degree of deformation of the structure in accordance with the relative displacement,
A relative displacement display device between two points.   The display device is selected from a light emitting device that notifies the degree of deformation of a structure with colored light, a sound generating device that notifies with sound or a sound including a warning sound, or a light emitting / sound generating device that notifies both with a sound. The relative displacement display device between two points according to 1. Used as an interlaminar displacement measuring device for measuring interlaminar displacement of multi-layer structures. In this case, measuring members are attached with switches along the diagonal lines between the diagonals in the frame of each level, and any position in each level. The display device for relative displacement between two points according to claim 1 or 2 , wherein a display device is installed on the display. It is installed between structures and used as a displacement measuring device that measures the relative displacement between the structures. In this case, a measurement member is attached with a switch between the upper parts of the structures. the two points relative displacement display device according to claim 1 or 2 display unit is installed at any position between the respective structures.

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