JPS63279166A - Floating inspection for concrete wall surface layer - Google Patents

Abstract

PURPOSE:To achieve a remote diagnosis of the position where a floating of a wall surface exists, by a method wherein the wall surface is tapped with a tapping bar to generate a hitting sound, which is recorded with a microphone and a recorded sound is listened to remotely to distinguish quality of the sound. CONSTITUTION:A pulley 10 is mounted on a roof top of a building 20 and a hanging rope 9 is hung with a winch 8 along a wall surface 21 and then, when a driver 4 is operated, a tapping bar 5 moves over the wall surface to emit a sound. This sound is caught with a microphone 7 and tone of the sound is distinguished with an earphone on the roof top to record floating condition of the wall surface on a recording paper. The rope 9 is given a mark indicating a position so that it can be determined immediately at what position the wall is being tapped. When one round of inspection is ended from top to bottom delivering the hanging rope, the pulley 10 is moved to shift the rope forward by about 1m. Thus, the entire wall surface is inspected by repeating the operation as mentioned above sequentially.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for easily inspecting floating mortar, tiles, etc. on the surface layer of concrete A-side, remotely, without the need for an inspector to approach each part of the wall surface.

[Conventional technology]

Mortar applied or tiles applied to concrete surfaces often float, resulting in accidents such as peeling and cracking.

A common method for investigating the condition of the float is to strike the wall with a hammer or the like and listen to the sound of the hammer to confirm the condition of the float. However, with this method, if the building is two or more stories high, the investigator must either erect scaffolding or hang a gondola to survey the building. Requires a large amount of money. Therefore, the current situation is that researchers only investigate areas within their reach, and estimate or estimate other areas.

Another method of investigation is to use an infrared camera to investigate the state of the float, but it is still far from practical as it has problems with the shooting conditions and accuracy, and it costs a lot of money. be.

On the other hand, there is active development of robots that can self-propel along walls, and there are methods for conducting investigations using them, but most of them are equipped with ultrasonic diagnostic equipment, etc., and are extremely expensive and have relatively low accuracy. There are problems and it is currently beyond practical use.

[Problem that the invention seeks to solve]

The hammering test for the presence or absence of lifting on the surface of a concrete wall is primitive, but it is highly accurate and does not require expensive equipment. In this case, scaffolding or gondolas were necessary.

The present invention breaks down such preconceptions and allows preliminary investigation to be carried out at low cost and with high accuracy before starting the concrete wall refurbishing process, without using scaffolding or gondolas.
The purpose is to provide an extremely inexpensive method that has the same effect as using these methods.

[Means for solving problems]

The present invention is characterized by the following technical means.

(1) Attach the pickup to the hanging rope, position the pickup by moving the hanging rope left and right and up and down along the wall, and tap the wall with a hammer to make a tapping sound. (4) The recorded sound is remotely listened to, the sound quality is classified, and the location of the floating wall surface is remotely diagnosed.

[Effect]

Investigating the condition of a wall surface using hammering sounds does not require special equipment and is extremely accurate.Based on the conventional stereotype, it was thought that investigation could not be done without scaffolding or gondolas, but researchers There is no need to approach the site to be investigated on a scaffold or gondola; You can do the same survey as you do, so there's no need to set up expensive scaffolding or gondolas.

In other words, you have the machine play what you are playing, and what you hear directly with your ears is heard through a microphone and a receiver.

In addition, by hanging a rope from the roof of a building, etc., the wall surface position can be determined by the horizontal movement position of the rope and the length of the rope.If you print a scale on the hanging rope, it will be easier to record the drawings. Able to write accurately.

〔Example〕

FIG. 1 shows an example of an apparatus for carrying out the present invention.

A regular tetrahedral frame tiil with running wheels 3 attached is suspended from the tip of the hanging lobe 9, and a pickup consisting of a percussion device 5 and a microphone 7 is attached to this. A weight 2 is attached to the tip 6 of the framework 1, and the wheel 3 is pressed against the wall surface by a moment. The wheels 3 are preferably rubber tires or wheels with needle-shaped objects attached radially to prevent the framework 1 from moving sideways and to prevent other noises from being picked up.

A reciprocating drive bag 4 is attached to the frame 1, and a hammer 5 having an iron ball is attached to its tip.

The drive device 4 of the percussion device 5 may be battery-driven or may be provided with a power distribution cord, but it is more preferable to use a battery as well.

The microphone 7 may be a wireless microphone or a corded microphone, but to simplify the work, a wireless microphone is preferred.

The microphone 7 is attached via a cushion material so as not to pick up other noises. Attach a spring that presses against the wall so that the percussion device always moves against the wall. In addition to rolling the wall surface, depending on the location, it may be more effective to incorporate a device that moves perpendicularly to the wall surface and hits the wall surface.

When there is strong wind, there is a risk that the frame of the pickup cannot be stably pressed against the wall with just the moment of the weight, so in that case, a fixed wire rope is stretched between the rooftop and the ground, and the pickup is placed along this rope. Raise and lower the device.

If there are many irregularities on the wall surface, such as a wall with a balcony, you can diagnose the tapping sound by holding a hammer with a handle longer than the balcony.

As shown in FIG. 2, a pulley 10 is attached to the roof of a building 20, a hanging rope 9 is suspended along a wall surface 21 by a winch 8, and when the drive device 4 is moved, the hammering rod 5 is moved above the wall surface. moves and makes a sound. This sound is captured by microphone 7, and on the rooftop, the timbre of the sound is heard using earphones, and the state of the float is recorded on recording paper. Mark the rope 9 to indicate its position so that you can easily see where on the wall you are currently tapping. After that, move the pulley 10, move the rope about 1 m next to it, and repeat the above operations in order to investigate the entire wall surface.

Next, a specific example will be described.

Example 1 A regular tetrahedral framework was constructed using iron pipes with a length of 50 cm, a rope was connected to the apex of the frame, wheels with a diameter of 10 cm were attached to the other two ends, and a weight was attached to the remaining top. An automobile wiper motor was attached as a pickup near the center of the intermediate member of the wheel, and a 50 cm long hammering rod having a 2 cm diameter iron ball was attached to the tip of the motor. A wireless microphone was also attached to the part of the framework adjacent to the sound rod.

A pulley was attached to the roof of a 10-story building, the hanging rope with the framework attached was lowered through the pulley, the winch motor was turned on, and the rope was gradually lowered until it was captured by a pickup. The participants listened to the sound of the striking stick using earphones and recorded the sound on recording paper. A distribution map of the floats on the wall was created on the recording paper.

Example-2 Build a regular tetrahedral framework using iron pipes with a length of 50 cm, attach a rope to one end, a weight to the other end, and wheels with a diameter of 10 cm to the other two ends.In the center of the framework with the wheels attached, I attached a gear so that when the wheel rotates, the gear also rotates. Diameter 2 at the tip
A hammering rod having a length of 50 cm and having a cm iron ball was attached so that the other end touched the gear and swung. A wireless microphone was also attached to the frame.

A pulley is attached to the roof of a 10-story building, a rope with this device attached is lowered, and as the rope is gradually lowered, the gear also rotates and the sounding rod moves up and down every time it touches the gear. The hammering stick struck the wall and made a banging sound. The hitting sounds were heard using earphones and recorded on recording paper. A distribution map of the floating parts on the wall was easily created on the recording paper, and appropriate injection work could be carried out.

〔Effect of the invention〕

According to the present invention, it has become possible to easily and remotely inspect floating surfaces of walls of buildings, etc.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an example of an apparatus used for implementing the method of the present invention, and FIG. 2 is an explanatory diagram of an embodiment of the method of the present invention. l...Framework 2...Weight 3...Wheel 4...Drive device 5...Sounding rod
7...Microphone 8...Winch 9
... Hanging rope lO... Pulley 20...
Building 21... wall. Figure 1

Claims (1)

[Claims] 1. When investigating the floating state of a concrete wall surface, a pickup consisting of a sound rod and a microphone is attached to a hanging rope, and the pickup is positioned by moving the hanging rope along the wall surface. Then, a tapping sound is generated by tapping the wall with the hammering rod, the tapping sound is recorded with a microphone, the recorded sound is listened to remotely, the sound quality is classified, and the location of the floating object on the wall is remotely determined. A floating inspection method for a concrete wall surface layer characterized by diagnosing it.