JPH05856Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention is applicable to the exterior walls, interior walls, ceilings, floors, etc. of buildings formed by pasting finishing materials such as tiles, mortar, and stone to concrete frameworks. These finishing materials were attached to concrete plates to form
This invention relates to a device for diagnosing whether or not the finishing material of a PCa board (Precast concrete board) has peeled off from the concrete body or concrete board.

[Prior Art] The present applicant previously proposed in Japanese Patent Laid-Open No. 57-136160 an apparatus that uses ultrasonic waves to detect the presence or absence of peeling of a finishing material. This detection device detects the presence of separation between the finishing material and the concrete body or concrete plate when an ultrasonic probe is applied to the surface of the finishing material with a liquid medium interposed between them and ultrasonic waves are transmitted. When the ultrasonic probe is scanned over the surface of the finished material, the sound pressure level can be adjusted by taking advantage of the fact that the sound pressure level of the reflected ultrasound waves is higher than when there is no peeling. Peeling of the finishing material is detected by recording it on the recording paper of the recorder.

[Problem that the invention attempts to solve]

However, although this conventional device can detect peeling of the finishing material by reading the peak value of the sound pressure level recorded on the recording paper, it is possible to detect peeling of the finishing material using the ultrasonic probe. Since the scanning does not also detect joints in the finishing material, although it is possible to know the presence of peeling in the finishing material and the approximate location of the peeled part, it is difficult to know where the peeled part is in the finishing material. There was a problem in that it was difficult to accurately and precisely detect whether the

Furthermore, the operation of the conventional device described above requires tasks such as scanning the ultrasonic probe, supplying and stopping the liquid medium, and operating the recorder, and these operations require multiple operators. Because of the heat, there were difficulties in terms of saving labor in operating the device.

This idea was created by focusing on the problems of conventional devices, and it can also detect the joints of finishing materials to accurately and accurately determine the location of peeling parts, and it also uses ultrasonic detection. tentacle scanning,
A finishing material that enables one operator to carry out necessary operations such as supplying and stopping the liquid medium, and operating the recorder, thereby saving labor and improving work efficiency and economy. The object of the present invention is to provide a peeling diagnosis device.

[Means for solving problems]

Therefore, the finishing material peeling diagnosis device related to this invention includes an ultrasonic probe that detects the presence or absence of peeling of the finishing material, a liquid supply valve that supplies and shuts off a liquid medium to the ultrasonic probe, and a liquid supply valve that supplies and shuts off a liquid medium to the ultrasonic probe. A liquid supply switch that opens and closes the valve, a joint detection switch that detects joints in the finishing material, and a scanning state detection switch that detects whether the ultrasonic probe is scanning along the finishing material are fixed to the grip bar. a scanning unit configured as; a liquid supply pump that is driven and stopped in conjunction with a liquid supply valve by a liquid supply switch and supplies a liquid medium to the ultrasonic probe via the liquid supply valve;
The feeding of the recording paper is driven and stopped by the recording paper feed switch, and the detection result of the presence or absence of peeling of the finishing material by the ultrasonic probe and the detection result of the joint of the finishing material by the joint detection switch are recorded on the recording paper. It is equipped with a recorder.

[Effect]

The operator holds the grip bar in his hand and scans the ultrasonic probe along the surface of the finished material while pressing it against the surface of the finished material. At this time, when the liquid supply switch is turned on, the liquid supply valve opens and the liquid supply pump is driven to supply liquid medium to the ultrasonic probe via the liquid supply valve, and then the liquid supply switch is turned off. For example, the liquid supply valve is closed and the liquid supply pump is stopped to cut off the supply of liquid medium to the ultrasound probe.

When the ultrasonic probe is pressed against the surface of the finished material, the scanning state detection switch is turned on at the same time and the recording paper of the recorder is fed, and when the ultrasonic probe is removed from the surface of the finished material, the scanning starts. The status detection switch is turned off and the feeding of the recording paper is stopped. Then, as the ultrasonic probe scans, the detection results of whether or not the finishing material has peeled are recorded on the recording paper, and the detection results of the joints of the finishing material by the joint detection switch are recorded on the recording paper.

〔Example〕

An embodiment of this invention will be described below with reference to the drawings.

First, to explain the configuration, referring to Figure 1, 1
is a scanning section, and this scanning section 1 is configured as follows.

That is, a U-shaped frame 4 is fixed to the tip of the grip bar 2 via a spring member 3, and this frame 4
A holder 6 is swingably attached to the tip of the holder 6 via a pin 5, and an ultrasonic probe 7 for detecting the presence or absence of peeling of the finishing material and a cover 8 for holding the liquid medium are attached to the holder 6. be done.

The configurations of the holder 6, ultrasonic probe 7, and cover 8 may be the same as those disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 57-136160, but the ultrasonic probe 7 It has a vibration element that converts it into a sound wave and transmits it, and receives the reflected wave and converts it into a voltage signal, and when the holder 6 and cover 8 are pressed against the surface of the finishing material, A liquid medium (for example, water, glycerin, oil, etc.) is supplied between the vibrating element and the surface of the finishing material from the liquid supply port provided by the cover 8.
It is retained and the rate of supply is adjusted to such an extent that it leaks from the contact area between the surface of the finishing material and the surface of the finishing material.

A joint detection switch 9 is further attached to the tip end side of the holder 6 for detecting joints in the finishing material. The joint detection switch 9 is provided with a contact 11 that is always elastically biased downward with respect to the switch body 10, and from the joint detection switch 9, the contact 11 is pressed against the surface of the finishing material and upward. When the reference voltage A is pushed up to ₁
(For example, about 0.3 to 0.6V) ON signal is output,
The contactor 11 is turned off when it falls into the joint of the finishing material and moves downward.

Near the spring member 3 of the grip bar 2, an ultrasonic probe 7 detects whether or not it is being scanned along the surface of the finishing material, and according to this detection result, feeds the recording paper 23 of the recorder 19. A scanning state detection switch 12 for driving and stopping the scanning state detection switch 12 is installed, and this scanning state detection switch 12 is connected to the spring member 3 and the frame 4.
A contact rod 13 extends toward the ultrasonic probe 7 side in parallel with the
has. This scanning state detection switch 12 outputs an ON signal when the contact rod 13 is simultaneously pressed against the surface of the finished material while the ultrasonic probe 7 is scanning along the surface of the finished material. However, when the ultrasonic probe 7 is not scanning along the surface of the finished material, that is, when the contact rod 13 is away from the surface of the finished material, it outputs a signal that turns off, and this detection signal The driving and stopping of feeding of the recording paper 23 of the recorder 19, which will be described later, is controlled.

At the part of the grip bar 2 that the operator grips, there is a liquid supply valve 14 that is an on-off valve for supplying liquid medium to the ultrasonic probe 7 and cutting off the supply, and a liquid supply valve 14 that opens and closes the liquid medium. A liquid supply switch 15 operated by an operator is installed. The liquid supply valve 14 and the liquid supply port formed in the holder 6 are connected by a vinyl hose 16 for liquid supply.

The scanning section 1 is configured as described above.

Furthermore, the device of this invention includes the following:

That is, 17 is an ultrasonic flaw detector, and this ultrasonic flaw detector 17 is connected to the ultrasonic probe 7 by wiring 18, and includes an oscillation circuit that supplies an oscillation signal to the vibrating element of the ultrasonic probe 7; An amplifier circuit that amplifies the voltage signal corresponding to the sound pressure level sent from the vibrating element, a waveform shaping circuit that shapes the waveform, and a display device such as a cathode ray tube that displays the sound pressure level signal that is the detection result of the vibrating element. have

19 is a recorder, and this recorder 19 is connected to the output terminal side of the ultrasonic flaw detector 17 through wiring 20, to the joint detection switch 9 through wiring 21, and to the scanning state detection switch 12 through wiring 22, respectively. A motor that drives and stops feeding the recording paper 23 is controlled by a detection signal from the scanning state detection switch 12, and a sound pressure level signal output from the ultrasonic flaw detector 17 indicates whether or not the finishing material has peeled off. A signal obtained by superimposing the signal and the detection signal indicating the presence or absence of a joint in the finishing material outputted from the joint detection switch 9 is recorded on the recording paper 23 with one pen.

24 is a liquid supply pump that pumps the liquid medium, 25 is a transformer for the liquid supply pump 24, 26 is a power outlet, and the liquid supply pump 24 is connected to the liquid supply valve 1.
4 by a vinyl hose for liquid supply, and the liquid supply pump 24, transformer 25, outlet 26, and scanning state detection switch 12 are connected to wiring 2.
8, 29, and 30. Then, by the operator's operation of the scanning state detection switch 12, the liquid supply valve 14 and the liquid supply pump 24 are operated in conjunction with each other, and the liquid is supplied from the liquid supply pump 24 to the liquid supply port of the holder 6 via the liquid supply valve 14. The supply of liquid medium and its interruption are controlled.

Next, to explain the operation of the above embodiment, with reference to FIG. 2, the presence or absence of peeling of the tile 31 from the concrete plate 30 is diagnosed for the PCa board 29 in which tiles 31 are pasted as a finishing material to the concrete board 30. When doing so, the operator must hold the grip bar 2 of the scanning unit 1
While holding the ultrasonic probe 7 in one's hand and pressing the holder 6 to which the ultrasonic probe 7 is fixed and the cover 8 against the surface of the tile 31, the user scans along the surface of the tile 31 along a diagnostic path B shown by a broken line.

At this time, if you turn on the liquid supply switch 15,
The liquid supply valve 14 is opened and the liquid supply pump 24 is driven, and the liquid medium flows from the liquid supply pump 24 through the liquid supply valve 14 between the ultrasonic probe 7 inside the holder 6 and the cover 8 and the surface of the tile 31. Further, when the liquid supply switch 15 is turned off, the liquid supply valve 14 is closed and the liquid supply pump 24 is stopped, and the supply of liquid medium to the ultrasonic probe 7 is cut off.

When the ultrasonic probe 7 is pressed against the surface of the tile 31, the contact rod 13 is also pressed against the surface of the tile 31, the scanning state detection switch 12 is turned on, and the motor for feeding the recording paper 23 of the recorder 19 is turned on. The recording paper 23 is driven and fed. Then, the ultrasonic waves transmitted from the vibrating element of the ultrasonic probe 7 are reflected on the surface of the tile 31 or the concrete plate 30, and this reflected wave is received by the vibrating element and converted into a voltage signal, and the sound pressure It is supplied to the ultrasonic flaw detector 17 as a level signal, and its waveform is displayed on the cathode ray tube of the ultrasonic flaw detector 17.
The sound pressure level signal is output to the recorder 19.
Further, from the joint detection switch 9 that moves together with the ultrasonic probe 7, the contactor 11 is connected to the tile 31.
When the contact 11 is pushed up by the surface of the tile 31, an on signal with a reference voltage _A1 is output, and when the contact 11 falls into the joint of the tile 31, an off signal with a voltage _A0 (≒OV) is output and supplied to the recorder 19. be done.

As shown in FIG. 3, the recording paper 23 of the recorder 19 contains a detection signal in which the sound pressure level signal from the ultrasonic flaw detector 17 and the detection signal indicating the presence or absence of a joint from the joint detection switch 9 are superimposed. recorded.

In Figure 3, the sound pressure level A ₁ is tile 31.
This is the reference voltage when there is no peeling, for example A ₁
= approximately 0.3 to 0.6V, and if there is separation between the tile 31 and the concrete board 30, the sound pressure level will become higher than this reference voltage _A1 . In the figure,
C ₁ is a normal area with no peeling, C ₂ has complete peeling and is diagnosed as a defective area, and C ₃ and C ₄ have no peeling but have air bubbles. It is diagnosed as a quasi-defective part. Further, the portion where the sound pressure level signal is A ₀ ≈OV is the portion where the joint is detected by the joint detection switch 9, and therefore, t _{1 ,} t ₂ , . . . each represent one tile 31. Therefore, it is possible to detect and diagnose which part of the tile 31 of the PCa board 29 has complete peeling C ₂ or presence of bubbles C ₃ and C ₄ .

FIG. 4 shows an example of an actual recording result on the recording paper 23, and shows that the _C2 portion is a complete peeling portion.

The device for diagnosing peeling of finishing materials related to this invention can diagnose peeling of finishing materials at construction sites and existing buildings by using scaffolding, gondolas, etc. In tension work, diagnosis can be made at an early stage when the mortar has hardened to a certain extent, and furthermore,
In cases such as PCa board tiles, it is effective to perform a diagnosis before shipping.

[Effect of idea]

As explained above, the finishing material peeling diagnosis device according to this invention includes an ultrasonic probe that detects the presence or absence of peeling of the finishing material, and a liquid supply valve that supplies and shuts off a liquid medium to the ultrasonic probe. , a liquid supply switch that opens and closes the liquid supply valve, a joint detection switch that detects joints in the finishing material, and a scanning state detection switch that detects whether the ultrasonic probe is scanning along the finishing material. a scanning unit configured to be fixed to a grip rod; a liquid supply pump that is driven and stopped in conjunction with a liquid supply valve by a liquid supply switch and supplies a liquid medium to the ultrasonic probe via the liquid supply valve; ; The feeding of the recording paper is driven and stopped by the recording paper feed switch, and the results of the detection of peeling of the finishing material by the ultrasonic probe and the detection results of the joints of the finishing material by the joint detection switch are recorded on the recording paper. Since it is equipped with a recorder that can record
It is possible to accurately and precisely detect and diagnose the position of the finishing material on the PCa board where peeling is present, and in particular, the diagnostic operation can be performed by one operator, which saves labor in operation. , work efficiency and economy can be improved, quality control of finishing materials can be improved, and diagnosis results can be saved.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the configuration of an embodiment of the device for diagnosing peeling of finishing materials according to this invention, Fig. 2 is a perspective view illustrating the operation of the device, and Fig. 3 is a perspective view showing the structure of an embodiment of the device for diagnosing peeling of finishing materials. FIG. 4 is a diagram showing an example of an actual recording paper. 1...Scanning unit, 2...Grip stick, 6...Holder,
7... Ultrasonic probe, 8... Cover, 9... Joint detection switch, 12... Scanning state detection switch,
14...Liquid supply valve, 15...Liquid supply switch, 1
7... Ultrasonic flaw detector, 19... Recorder, 23...
Recording paper, 24...liquid supply pump, 29...PCa board,
30... Concrete board, 31... Tile.

Claims (1)

[Scope of utility model registration request] An ultrasonic probe that detects the presence or absence of peeling of the finishing material, a liquid supply valve that supplies and shuts off a liquid medium to the ultrasonic probe, a liquid supply switch that opens and closes the liquid supply valve, and a liquid supply switch that detects the presence or absence of peeling of the finishing material. a scanning unit configured by fixing to a grip bar a joint detection switch for detecting a joint, and a scanning state detection switch for detecting whether or not the ultrasonic probe is scanning along the finishing material; a liquid supply pump that is driven and stopped in conjunction with the liquid supply valve by a switch and supplies liquid medium to the ultrasonic probe via the liquid supply valve; feeding of the recording paper is controlled by the scanning state detection switch; A finishing material, which is driven and stopped, and includes a recorder that records on the recording paper the detection results of the presence or absence of peeling of the finishing material by the ultrasonic probe and the detection results of the joints of the finishing material by the joint detection switch. Peeling diagnosis device.