JP2010230585A - Inspection method of alc reinforcing reinforcement basket assembly alignment position - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inspection method for inspecting automatically whether assembled and aligned ALC reinforcing reinforcement baskets are arrayed on prescribed positions. <P>SOLUTION: Reinforcing reinforcement baskets are suspended and arranged in the aligned state through fixing pins and bridges on prescribed positions in an autoclaved lightweight concrete ALC slurry type frame, and then a beam is irradiated in parallel along a longitudinal direction of the reinforcing reinforcement baskets from a light source arranged on one end of the ALC reinforcing reinforcement baskets, and while detecting reflected light reflected by a reflection plate arranged on the other end of the ALC reinforcing reinforcement baskets by a light receiving element juxtaposed with the light source, the light source and the reflection plate are traversed in a direction orthogonal to the longitudinal direction of the reinforcing reinforcement baskets. The light source and the light receiving element may be arranged on both ends of the reinforcing reinforcement baskets. Any of visible red light, an infrared ray and a laser beam can be used as the beam. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an ALC reinforcing bar cage embedded in an ALC (lightweight cellular concrete) panel used as an outer wall material of a building, for example, and more particularly, assembling an ALC reinforcing bar cage to a pin and a bridge. The present invention relates to a method for inspecting position accuracy after completion.

  In general, ALC panels are semi-cured by adding aluminum powder as a foaming agent to an ALC raw material slurry consisting mainly of silica, quicklime, cement, etc., and pouring it into an ALC slurry mold, and then foaming and curing it. The ALC block is taken out from the ALC slurry mold and cut into a panel having a predetermined size with a cutting wire such as a piano wire that is tensioned with a predetermined tension. Next, the cut semi-cured ALC panel is cured with an autoclave or the like, and then subjected to surface treatment or the like as appropriate to produce a product.

An ALC reinforced reinforcing bar cage is formed in which a plurality of reinforcing bars having a diameter of 4 mm to 8 mm are welded and formed into a cage shape inside an ALC panel called a thick panel having a thickness of 75 mm or more. The ALC reinforcing steel basket is set in the ALC slurry mold before the raw material slurry is injected.
FIG. 1 is a perspective view showing a state of the pin 21 and the bridge 22 when the ALC reinforcing steel bar is set in the ALC slurry mold. In order to set the ALC reinforcing steel basket in the ALC slurry mold 41, a plurality of through holes 23 are provided in a bridge 22 made of a steel material such as I-shaped steel as shown in FIG. A pin bridge 24 is used in which pins 21 made of a bar made of steel are vertically inserted and suspended. In FIG. 1, the display of the ALC reinforcing bar cage is omitted.

The ALC reinforcing bar cage is composed of two reinforcing bar mats that are welded in a wire mesh shape to the main reinforcing bar that is the reinforcing bar in the length direction of the ALC panel and the horizontal reinforcing bar that is the reinforcing bar in the width direction of the ALC panel. It is welded and formed into a bowl shape. The ALC reinforced reinforcing bar cage in a bowl shape is set at a predetermined position in the ALC slurry form frame, and the united bar is fixed to the set pin using a reinforcing bar holding frame, a reinforcing bar holding bar or the like.
That is, the ALC reinforcing bar cage is set on the ALC slurry mold 41 while being suspended on a necessary number of pins 21 arranged in an orderly manner via a plurality (four pairs in FIG. 1) of pin bridges. (For example, refer to Patent Document 1).

The plurality of aligned and suspended ALC reinforcing bar cages are inspected by an inspector as to whether or not they are aligned in a predetermined position. If the alignment position is deviated in the thickness direction of the ALC panel, or if the rebar is bent in the thickness direction of the ALC panel due to local bending of the rebar, the rebar is exposed on the surface of the ALC panel. It becomes. In the worst case, when a semi-cured ALC block is cut with a cutting wire, it interferes with the wire and cannot be cut, resulting in a large number of defects. Therefore, the inspection of the alignment position of the main bars in the thickness direction of the ALC panel needs to be performed particularly carefully.
However, for one ALC slurry mold having a length of 7 m, a width of 1.5 m, and a depth of about 0.7 m, an ALC having a length of 0.6 m to 6 m, a width of 0.6 m, and a thickness of 0.06 m to 0.175 m. A lot of reinforcing steel bars are set. Therefore, the number of sheets may exceed 100, and since the main bars in the length direction are plural per ALC reinforcing bar cage, the inspection work becomes complicated and requires a lot of time and manpower. However, it was hard work and countermeasures were desired.

Japanese Patent Laid-Open No. 06-092751

  The present invention has been proposed in view of the above problems, and an object of the present invention is to provide an inspection method for automatically inspecting whether or not the assembled and aligned ALC reinforcing bar cage is aligned at a predetermined position. Is to provide.

In order to achieve the above object, the present invention provides an inspection method for an ALC reinforced steel basket assembly alignment position having the following configuration.
That is, one of the inspection methods of the ALC reinforced rebar basket assembly alignment position according to the present invention is to suspend the reinforced rebar basket in a predetermined position in the lightweight cellular concrete ALC slurry form by aligning the reinforcing rebar basket through a fixing pin and a bridge. After the arrangement, the reflected light reflected from the reflector disposed at the other end of the ALC reinforcing bar is irradiated with light from a light source arranged at one end of the ALC reinforcing bar in parallel along the length direction of the reinforcing bar. Is detected by a light receiving element provided alongside the light source, and an inspection method of an ALC reinforced bar cage assembly alignment position in which the light source and the reflector are traversed in a direction perpendicular to the length direction of the reinforcing bar cage.
By adopting such a method, anyone can inspect the alignment positions of a large number of ALC reinforcing steel bars in a short time, and can easily detect a portion that needs to be reworked.

Another method of inspecting the ALC reinforced rebar basket assembly alignment position according to the present invention is to suspend and arrange the reinforced rebar cage in a predetermined position in the lightweight cellular concrete ALC slurry mold via a pin and a bridge for fixing. Thereafter, the light source is irradiated in parallel along the length direction of the reinforcing bar cage from a light source arranged at one end of the ALC reinforcing bar cage, and is detected by a light receiving element arranged at the other end of the ALC reinforcing bar cage. And an ALC reinforcing bar cage assembly alignment position in which the reflector is traversed in a direction perpendicular to the length direction of the reinforcing bar cage.
The effect similar to the above can be obtained by such a method.

In the present invention, a semiconductor light emitting element and an optical system using the semiconductor light receiving element can be used as the light source and the light receiving element.
Moreover, it is preferable to use any one of visible red light, infrared light, and laser light as the light beam.
Using a semiconductor light-emitting element and a semiconductor light-receiving element, a light beam having a desired wavelength can be easily obtained in any of visible red light, infrared light, and laser light, and is a compact, highly sensitive, durable, and easy-to-handle optical device. Can be easily configured.
The light source, the light receiving element, and the reflecting plate are movable with their optical axes aligned with each other.

Further, in the present invention, the pre-stored reference position of the ALC reinforcing bar cage and the pin position for assembling and aligning and the horizontal bar position of the reinforcing bar cage detected when the light beam is blocked by hitting the ALC reinforcing bar cage The error of the assembly alignment position of the ALC reinforcing bar cage is calculated from the distance, and when the ALC reinforcing bar cage aligned beyond the set error range is detected, the traverse of the optical system is stopped and an alarm is issued at the same time. It can be set as the inspection method of the basket assembly alignment position.
With such an inspection method, inspection records can be stored, which is very useful for enhancing quality control.

  As described above, in the state where the ALC reinforcing bar cage after assembly in the previous stage of setting to the ALC slurry formwork is aligned and suspended, light is irradiated from the light source in parallel to the length direction of the reinforcing bar cage, By detecting whether or not the light beam is blocked over the entire length of the ALC reinforcing bar cage, the alignment position of the reinforcing bar in the thickness direction of the ALC panel is inspected, so the alignment position of the ALC panel in the thickness direction can be reliably detected. It becomes.

In addition, when a visible laser beam is used as the light source, the inspector can easily identify the portion that needs to be reworked when detecting the ALC reinforced reinforcing bar cage that is aligned beyond the set error range.
Due to the above effect, it becomes possible for anyone to check the alignment positions of a large number of ALC reinforcing steel bars in a short time. Moreover, the occurrence of defects due to oversight of abnormalities can be drastically reduced.

Hereinafter, the present invention will be specifically described based on embodiments shown in the drawings.
FIG. 2 is a perspective view showing an example of a schematic configuration of the inspection method of the ALC reinforcing bar basket assembly alignment position according to the present invention. The ALC reinforcing bar cage 1 is fixed to the pin 21 via the united bar 4.
In the inspection method of the ALC reinforced steel bar assembly / alignment position of the present embodiment, a laser reflection type optical device in which a semiconductor light emitting element and a light receiving element are integrated as an optical system is used as a light source. An example is shown in which 32 is incorporated as a pair on an optical system frame.
A plurality of sets of ALC reinforced rebars 1 assembled and arranged for each ALC slurry mold, and with a distance equal to or greater than the length of the ALC slurry mold 41, a light receiving and emitting element of the optical system 31 and the reflecting plate 32 are disposed to face each other. The light emitting / receiving element 31 and the reflecting plate 32 are movable in the width direction of the ALC slurry mold 41 while keeping the optical axis L aligned as shown by arrows in FIG. The moving means can be realized by a motor drive by a linear slide part and a ball screw.

  It is desirable that a plurality of the light emitting / receiving elements 31 and the reflecting plate 32 of the optical system are provided in two places, the upper part and the lower part of the ALC slurry mold 41. In this way, it is possible to reduce the number of uninspected places and reduce inspection omissions. In the upper part of the ALC slurry mold 41, the pins 21 are set at predetermined intervals by the bridge 22, so that there is relatively little positional error, but in the lower part of the ALC slurry mold 41, an error due to bending of the reinforcing bars is also added. Therefore, since the deviation from the predetermined position of the ALC reinforcing steel bar is also increased, the importance of the inspection is further increased, and the effect of preventing the occurrence of defects due to error detection becomes remarkable. The lower part of the ALC slurry mold 41 is preferably at least 1/8 to 1/10 of the entire length of the main bar from the lower end of the main bar of the ALC reinforcing steel bar.

The light emitting / receiving element 31 and the reflecting plate 32 are arranged so as to sandwich a plurality of ALC reinforcing steel bars 1 assembled and aligned for each ALC slurry mold. At this time, the light beam to be irradiated is emitted from the light emitting portion and arranged so as to be parallel to the length direction of the ALC reinforcing bar cage 1. The light that has passed between the horizontal bars 3 of the ALC reinforcing bar 1 is reflected by the opposite reflector 32 and reaches the light receiving section along the original path and is detected.
The light emitting / receiving element 31 and the reflecting plate 32 are traversed in the width direction of the ALC slurry mold indicated by the arrow in FIG. 2 while keeping the optical axis L coincident.
The light strikes the horizontal bar 3 of the ALC reinforcing bar 1 and is blocked. By taking this blocking position into a computer and comparing it with a normal position, it is possible to detect the position of the position shift and the magnitude of the shift. If all the light is detected by the light receiving unit and compared with a predetermined interval, there is no large error in the bar arrangement position of the ALC reinforcing bar cage. When the position of the ALC reinforcing steel bar 1 is greatly deviated from the set position, an alarm is issued.

  If the movement of the light emitting / receiving element 31 and the reflecting plate 32 is stopped when the position of the ALC reinforcing bar cage 1 exceeds a preset error range, the light beam that can be visually observed on the reinforcing bar at the corresponding location. As a result, the inspector can easily identify the location. Further, when the rebar position is adjusted so that the light beam does not hit the rebar position, the adjustment work can be easily performed.

As the optical device used here, for example, an optical element in which a semiconductor light emitting element and a semiconductor light receiving element are integrated can be used. As the light source, it is preferable to use a light source that is excellent in straightness such as visible red light, infrared light, and laser light. Specifically, a light emitting diode (LED) or a laser diode (LD) can be used.
Further, a metal plate such as chromium or aluminum having a high reflectance can be used as the reflecting plate.
It is important that the light emitting / receiving element 31 and the reflecting plate 32 are traversed in parallel while being synchronized with the optical axes aligned on the optical system base 33.

  The position of the bridge 22 is always about the same. Therefore, the position of the pin 21 inserted into the bridge 22 is also the same, and can be a reference for the inspection position. If the traverse start position of the light source is used as the origin and the traverse distance can be detected in real time by an encoder or the like, the distance to the location where the light beam is blocked by the horizontal stripe 3 can be specified. If the identified distance is compared with the regular distance using a computer, it is possible to identify how much the distance is deviated from the regular position. For example, when the amount of deviation from the normal position exceeds about 7 mm, an abnormality display is output.

  In the above example, an example in which a light emitting / receiving element and a reflecting plate in which a light emitting element and a light receiving element are integrated is shown, but a light receiving element may be disposed instead of the reflecting plate. In this case, the light-emitting element and the light-receiving element may be arranged so as to face each other with the ALC reinforcing basket interposed therebetween, and may be traversed in synchronization with each other. If the light emitting element and the light receiving element are arranged to face each other, advantages such as easy setting of the optical axis can be expected.

FIG. 3 is a diagram illustrating an example of a cross section in the method for inspecting an ALC reinforcing bar basket assembly alignment position according to the present invention, and is a diagram illustrating a moving direction of a light beam.
A panel P indicated by a two-dot chain line in FIG. 3 is an assumption diagram when the ALC slurry is poured into an ALC slurry mold and cured, and cut into a panel shape with a wire cutter to become an ALC panel P. Here, when the thickness of the ALC panel P is W and the thickness of the ALC reinforcing bar cage 1 is w, the distance between the surface of the ALC panel P and the surface of the ALC reinforcing bar cage 1 is (W−w) × 1. / 2, which is the cover thickness d. If the position of the ALC reinforcing bar cage 1 is greatly deviated to the left or right as seen in the figure, the cover thickness d of the reinforcing bar becomes small, and a defect occurs or cutting with a wire cutter becomes impossible.
As a matter of course, the deviation of the position of the ALC reinforcing bar 1 from the appropriate position is preferably as small as possible, and for example, it is sufficient to be within ± 7 mm. In addition to misalignment of the ALC reinforcing bar cage 1, the cover thickness may be reduced due to, for example, bending of the main reinforcement 2. Even in this case, the lateral muscle 3 moves together with the bent main muscle 2 so that it can be detected.

In FIG. 3, a light beam is irradiated from the front side (front side) to the back side (back side). While the light emitting / receiving element 31 and the reflecting plate 32 are traversed in the light source moving direction indicated by the arrow in FIG. 3, the light beam is irradiated along the longitudinal direction of the ALC reinforcing bar cage 1.
The light beam emitted from the light source is blocked when passing through the horizontal bar 3 or the pin 21 of the ALC reinforcing bar cage 1 as it is traversed. The transverse bar 3 to be detected is a steel wire having an outer diameter of around 4.0 mm. The pin 21 is a steel bar having an outer diameter of about 8.0 mm.
If the allowable error in the distance between the horizontal bar 3 of the ALC reinforcing bar 1 and the pin 21 is not reduced, the horizontal bar 3 may be exposed from the surface of the ALC panel P or the ALC panel P may be cracked. appear.
In this way, an abnormality is detected by comparing the position where the light beam is blocked during the traverse process with an appropriate position.
If the optical system is configured to use colored light that can be seen visually, the traverse of the light source is stopped when the optical system becomes abnormal and the light is applied to the abnormal part. In this case, the operator can easily identify the abnormal part, and this can reduce the labor and exert great power as a measure against an inspection omission.

As described above, according to the inspection method for the ALC reinforced steel basket assembly alignment position according to the present invention, it is possible to automatically check whether the alignment position is appropriate. In addition, it is easy to identify an abnormal part, and reworking is easy.
Therefore, a great amount of time and manpower required for the inspection work can be reduced, and product defects can be reduced.

It is a perspective view which shows the pin bridge set to the ALC slurry formwork. It is a perspective view which shows an example of schematic structure of the test | inspection method of the ALC reinforcement steel bar assembly alignment position by this invention. It is explanatory drawing which shows an example of the moving direction of a light ray of the inspection method of the ALC reinforcement reinforcing bar basket assembly alignment position by this invention.

DESCRIPTION OF SYMBOLS 1 ALC reinforcement reinforcement basket 2 Main reinforcement 3 Transverse reinforcement 4 Combined reinforcement 21 Pin 22 Bridge 23 Through-hole 24 Pin bridge 31 Light emitting / receiving element 32 Reflector 33 Optical system mount 41 ALC slurry formwork P ALC panel

Claims (5)

  A reinforcing reinforcing bar basket is aligned and suspended at a predetermined position in a lightweight cellular concrete ALC slurry form via a pin and a bridge for fixing, and then light rays are reinforced from a light source arranged at one end of the ALC reinforcing bar cage. The light source and the reflector are reinforced while detecting the reflected light reflected by the reflector placed at the other end of the ALC reinforced reinforcing steel cage in parallel with the length direction of the cage and detected by the light receiving element provided in the light source. A method for inspecting an assembling / aligning position of an ALC-reinforced reinforcing bar cage, characterized by traversing in a direction perpendicular to the length direction of the reinforcing bar cage.   A reinforcing reinforcing bar basket is aligned and suspended at a predetermined position in a lightweight cellular concrete ALC slurry form via a pin and a bridge for fixing, and then light rays are reinforced from a light source arranged at one end of the ALC reinforcing bar cage. The light source and the reflector are traversed in a direction perpendicular to the length direction of the reinforcing bar cage while irradiating in parallel along the length direction of the car and detecting with a light receiving element disposed at the other end of the ALC reinforcing bar cage. A method for inspecting an ALC reinforced rebar cage assembly alignment position characterized by the above.   3. The method for inspecting an ALC reinforced steel basket assembly alignment position according to claim 1, wherein a semiconductor light emitting element and a semiconductor light receiving element are used as the light source and the light receiving element.   4. The method for inspecting an ALC reinforcing bar basket assembly alignment position according to claim 1, wherein the light beam is any one of visible red light, infrared light, and laser light. 5.   From the distance between the pin position which is the reference position of the pre-stored ALC reinforcing bar basket assembly alignment position and the main reinforcing bar position of the reinforcing bar detected when the light beam hits the ALC reinforcing bar cage, the ALC reinforcing bar basket assembly is performed. 4. An error in alignment position is calculated, and an alarm is issued simultaneously with stopping the traverse of the optical system when detecting an ALC reinforcing bar cage that is aligned beyond the set error range. A method for inspecting an ALC reinforcing bar basket assembly alignment position according to claim 1.

Images