JP7631838B2 - Spray thickness control tool, spray thickness control method, and spray thickness control system - Google Patents

Description

The present invention relates to a spray thickness control tool, a spray thickness control method, and a spray thickness control system for controlling the spray thickness of a fireproof coating material sprayed onto a surface to be treated.

In steel-frame buildings, fireproofing is achieved by covering the surface of the structure with a fireproof coating material. When fireproof coating is carried out by spraying, quality control is required to confirm that the fireproof coating material is sprayed at a specified thickness according to the fire resistance required for each structural material. Verification work is generally carried out by on-site workers inserting the needle of a thickness measuring tool such as that shown in Patent Document 1 into the sprayed fireproof coating material on the work surface to measure the thickness, and also by planting a thickness confirmation pin to confirm that the sprayed thickness meets the specified thickness.

Japanese Patent Application Publication No. 10-267605

The method of controlling the spray thickness using the above-mentioned thickness measuring tools and thickness checking pins requires manual labor to check the spray thickness, and furthermore, if the surface to be worked on is at a high altitude, work at high altitudes will be required using work scaffolding or aerial work vehicles, etc.

In recent years, in particular, many work sites have introduced spraying robots to reduce the number of people required for spraying work and to improve work efficiency. In such cases, it may be necessary to prepare work scaffolding or aerial work vehicles just for the inspection work. This not only creates issues with work safety, but also requires a great deal of time and money for quality control, which can be disadvantageous in terms of construction time and costs.

The present invention was developed in consideration of these problems, and its main purpose is to quickly and efficiently manage the thickness of the fireproof coating material sprayed onto the surface to be treated.

In order to achieve this object, the spray thickness control jig of the present invention is a spray thickness control jig for controlling the spray thickness of a fire-resistant coating material, and comprises a thickness confirmation member arranged to protrude perpendicularly from the surface of a steel-framed structure to be worked on, and a fixing member for fixing the thickness confirmation member to the surface to be worked on, wherein the fire-resistant coating material is made of a material containing rock wool granular cotton and a cement-based hardening material, and the thickness confirmation member is provided with a specification thickness guide portion that indicates an indication of the specification thickness required for the fire -resistant coating material sprayed onto the surface to be worked on, and a control guide portion that indicates an indication of the control allowance that serves as a target for the surface position of the fire-resistant coating material, and the specification thickness guide portion and the control guide portion are colored differently from the fire-resistant coating material and in different colors from each other .

The spray thickness control method of the present invention is a method for controlling the spray thickness of a fire-resistant coating material sprayed onto a surface to be treated using the spray thickness control tool of the present invention, and is characterized in that it includes the steps of attaching the spray thickness control tool to the surface to be treated, spraying the fire-resistant coating material onto the surface to be treated, and controlling the specified thickness of the fire-resistant coating material by detecting, by a colored color , the specified thickness guide portion exposed from the fire-resistant coating material sprayed onto the surface to be treated.

The spray thickness management system of the present invention is a spray thickness management system comprising the spray thickness management tool of the present invention and a thickness management support device that supports management of the specified thickness of the fire-resistant coating material sprayed onto the construction target surface, wherein the thickness management support device comprises an image acquisition unit that acquires imaging data of the fire-resistant coating material sprayed onto the construction target surface to which the spray thickness confirmation tool is attached, and an image analysis unit that detects the specified thickness guideline portion exposed from the fire-resistant coating material in a color on the imaging data.

According to the spray thickness control tool, spray thickness control method, and spray thickness control system of the present invention, by attaching the spray thickness control tool to the surface to be worked on before the spraying work, when checking the spray thickness, the on-site worker or construction manager can visually check, or detect the colored part that indicates the approximate specified thickness on the image data of the sprayed fireproof coating material, and can check whether the spray thickness satisfies the specified thickness.

This allows on-site workers and construction managers to easily check the thickness of the sprayed fireproof coating from a distance without approaching the surface to which the coating is being applied, making it possible to perform quality control quickly and efficiently even when the surface to be treated is spread over a wide area. In addition, since there is no need to prepare scaffolding or aerial work vehicles even when the surface to be treated is located at a high altitude, work safety can be ensured and this contributes to reducing construction costs and time.

In addition, by adopting a spray thickness management system, a series of tasks from checking the spray thickness to compiling the data can be automated by acquiring image data of the fireproof coating material sprayed onto the surface to be worked on. This allows data such as the spray thickness status and position information obtained from each spray thickness management tool to be consolidated and managed in a centralized manner, and the managed data can also be used for creating reports, etc. In this way, it is possible to support the quality control work of construction managers and improve efficiency.

According to the present invention, by using a spray thickness control jig that can be attached to the surface to be treated before spraying, it is possible to quickly and efficiently control the spray thickness of the fireproof coating material sprayed onto the surface to be treated.

FIG. 2 is a diagram showing the state of fireproof coating work by spraying in this embodiment. FIG. 13 is a diagram showing a spray thickness control jig in the present embodiment. 1A to 1C are diagrams showing a procedure for controlling the spray thickness using a spray thickness control jig in the present embodiment. 13A and 13B are diagrams showing another example of the spray thickness control jig in the present embodiment. FIG. 2 is a diagram showing a spray thickness management system in the present embodiment. FIG. 11 is a diagram showing the flow of quality control of spray thickness in the present embodiment. FIG. 1 is a diagram showing an example of use of the spray thickness management system in this embodiment.

The spray thickness control tool, spray thickness control method, and spray thickness control system of the present invention are described in detail below with reference to Figures 1 to 7, taking as an example a case in which they are used for quality control in a semi-dry rock wool construction method.

<<Spraying of fireproof coating material>>
As shown in Fig. 1, in the spraying construction using the semi-dry rock wool method, first, a fireproof coating material C made of a material containing rock wool granules and a cement-based hardening material is sprayed onto the construction target surface T of a building 100. Next, a fireproof finish is performed by pressing with a trowel or performing similar work to suppress fuzz that occurs on the surface of the sprayed fireproof coating material C.

Then, the spray thickness control jig 1 is used to control the thickness of the fireproof coating material C sprayed onto the work target surface T. Details of the spray thickness control jig 1 are explained below using an example in which the work target surface T is provided on a beam member 101 made of H-shaped steel.

<Spray thickness control tool>
As shown in Figure 2 (a), the spray thickness control jig 1 comprises a thickness confirmation member 2 arranged to protrude perpendicularly from the construction target surface T of the beam member 101, and a fixing member 3 provided on the base end side 2a of the thickness confirmation member 2.

The thickness confirmation member 2 is provided with a specification thickness guide portion 21 that functions as a guide for the specification thickness L1 required when spraying the fireproof coating material C onto the work target surface T, and a control guide portion 22 that functions as a guide for the control allowance L2. Therefore, the thickness confirmation member 2 protrudes from the work target surface T by at least a length L that is the sum of the specification thickness L1 and the control allowance L2.

The control allowance L2 is the target surface position of the fireproof coating material C that has been sprayed onto the work surface T and then fireproofed. If the surface is within the range of the control allowance L2, the sprayed fireproof coating material C can be evaluated as satisfying the specified thickness L1 and being within the control target range, being sprayed at an economical volume.

The specification thickness guide section 21 located on the base end side 2a and the management guide section 22 located on the tip end side 2b each have a colored section with a different color applied to the side periphery. Any color scheme may be used as long as it is possible to distinguish between the two and the color type is different from that of the fire-resistant coating material C. For example, only one of them may be colored and the other may be left in its raw state without being colored. If no coloring is used, this is limited to cases where the raw material is a color that can be distinguished from the fire-resistant coating material C by image processing or visual inspection, etc.

For example, FIG. 2(b) shows an example in which the control guideline portion 22 (range of control allowance L2) is colored differently according to the fire resistance required for each structural member (beam member 101, column member 102) to which the spray thickness control jig 1 is attached. The colors used here are based on the colors of the existing thickness confirmation pins stipulated in the "Sprayed Rockwool-Coated Fireproof Structure Construction Control Guidelines Revised in 2012 Rockwool Industry Association."

In this case, the color used in the specification thickness guide section 21 (range of specification thickness L1) may be any color other than that used in the management guide section 22 and other than a color similar to the fire-resistant coating material C (the difference in color type can be distinguished by image processing or visual inspection, etc.).

The material of the thickness confirmation member 2 having such a configuration is a corrosion-resistant metal that is used for existing thickness confirmation pins, such as cold heading carbon steel wire rod (JIS G 3507) or hot-dip galvanized steel sheet (JIS G 3302). However, it is not limited to this, and any non-flammable inorganic material, such as a hardened body made of cement-based material, may be used.

The fixing member 3 may be made of any material, such as a magnet or adhesive, that can fix the thickness confirmation member 2 to the target surface T. When an adhesive is used, it is preferable to use a bitumen-based, synthetic rubber-based, synthetic resin-based adhesive, or an adhesive equivalent thereto, which is approved for use as a secondary constituent material of the fire-resistant coating material C. Specific examples of adhesives include CN adhesive (cyanoacrylate), etc.

When the spray thickness control jig 1 is installed on a beam member 101 made of H-shaped steel, it is preferable to install it in a position where it can be seen by on-site workers and construction managers on the work floor. For example, it is recommended to install it on the underside of the upper flange, the web, the small end and the underside of the lower flange when viewed from the cross section as shown in Figure 3 (a). Also, when installing it on a column member 102 made of a square steel pipe, it is recommended to install at least one on each column surface as shown in Figure 1.

<<How to control spray thickness>>
The procedure for controlling the spray thickness using the above-mentioned spray thickness control jig 1 will be described below, taking as an example the case where spraying work is performed on one surface of a beam member 101.

First, as shown in FIG. 3(b), the fireproof coating material C is sprayed onto the beam member 101 to which the spray thickness control jig 1 is attached. Next, after applying a trowel press or a similar fireproof finish, the condition of the spray thickness control jig 1 attached to the beam member 101 is observed. The spray thickness control jig 1 can be observed using image data obtained by imaging the fireproof coating material C sprayed onto the beam member 101, or it can be observed directly by visual inspection by an on-site worker.

For example, looking at Figure 3(c), the spray thickness control jig 1 provided on the small end and underside of the lower flange has a visible control guide portion 22, but not a visible specified thickness guide portion 21. Therefore, it can be evaluated as being within the control target range that satisfies the specified thickness L1 and has an economical volume. Furthermore, the spray thickness control jig 1 itself cannot be seen on the underside of the upper flange. Therefore, it can be evaluated that the spray thickness of the small end and underside of the lower flange and the underside of the upper flange exceeds the control target.

On the other hand, the spray thickness control jig 1 installed on the web has both the control guideline portion 22 and the specified thickness guideline portion 21 exposed and visible. In other words, it can be determined that the spray thickness of the fire-resistant coating material C does not meet the specified thickness L1. Therefore, the on-site worker will spray the fire-resistant coating material C and perform fire-resistant finishing again on the area including the area in question, until at least the specified thickness guideline portion 21 becomes invisible.

In this way, by using the spray thickness control jig 1, on-site workers and construction managers can easily and directly visually confirm that the fire-resistant coating material C meets the specified thickness even if they are not in close proximity to the fire-resistant coating material C sprayed onto the beam member 101. In particular, when the construction site covers a large area, the construction site can be photographed using video or still images, etc. to obtain captured images, and the captured images can be visually confirmed to quickly and efficiently carry out quality control work on the spray thickness.

Therefore, it is possible to omit the conventional work of directly measuring and confirming the thickness of the fireproof coating material C using scaffolding or aerial work vehicles, ensuring work safety and contributing to reducing construction costs and shortening construction time. Furthermore, since the management guideline section 22 adopts a color scheme similar to that of existing thickness confirmation pins as shown in FIG. 2(b), it may be possible to use it as a substitute for the thickness confirmation pins conventionally performed for construction quality inspection, and omit the work of planting in the fireproof coating material C.

<Other examples of spray thickness control jigs>
In FIG. 2(a), a rod-shaped member is used as the thickness checking member 2 of the spray thickness control jig 1, but the thickness checking member 2 may be formed in any shape.

For example, FIG. 4(a) shows an example in which an L-shaped plate material 23 is used as the thickness confirmation member 2. Specifically, one of the plates constituting the L-shaped plate material 23 is the base end side 2a of the thickness confirmation member 2, and a fixing member 3 is provided on the plate surface. In addition, the other plate constituting the L-shaped plate material 23, which is positioned so as to protrude perpendicularly from the construction target surface T, has a length L that is the specified thickness L1 plus a control allowance L2, and its tip is set to the tip side 2b.

The specification thickness guide section 21 made of plate material is provided at the position of the specification thickness L1 when viewed from the base end side 2a, and the control guide section 22 made of plate material is provided at the tip end side 2b, and these are colored. The specification thickness guide section 21 and the control guide section 22 protrude perpendicularly to the L-shaped plate material 23 and are provided so as not to overlap each other. The specification thickness guide section 21 and the control guide section 22 may be made of plate material of the same shape, or the size and external shape may be changed to make them easier to distinguish.

As a result, as shown in FIG. 4(b), even if a site worker or construction manager is not in close proximity to the beam member 101, the specification thickness guide section 21 and the management guide section 22 can be easily confirmed. A spray thickness management jig 1 of this shape can be applied to both the beam member 101 and the column member 102, and to either position.

In addition, as a shape suitable for installation on the lower flange of the beam member 101, for example, an angle plate material 24 as shown in Figures 4 (b) and (c) may be used as the thickness confirmation member 2.

Specifically, a fixing member 3 is provided to close the opening of the angle plate 24, forming a triangular prism, and the inner surface of the fixing member 3 is set as the base end side 2a. The area from the base end side 2a to the inner corner of the angle plate 24 is set as the specification thickness L1, and the material thickness of the angle plate 24 is set as a control allowance L2, and a specification thickness guide portion 21 made of triangular plate material is provided to close both ends of the angle plate 24. The outer corner of the angle plate 24 is set as the tip side 2b, and the area between the inner corner and the outer corner is set as the control guide portion 22, and the control guide portion 22 and the specification thickness guide portion 21 are colored.

<<Spraying thickness control system>>
On-site workers and construction managers can check the spray thickness by directly visually inspecting the spray thickness control jig 1, which has the above-mentioned specification thickness guide section 21 and control guide section 22, or by visually checking an image taken of the fire-resistant coating material C, and thereby perform quality control.

However, as shown in FIG. 5(a), it is also possible to combine the spray thickness control jig 1 and the thickness control support device 10 to form a spray thickness control system 20, and automate the quality control work, including the spray thickness control method carried out in the above-mentioned procedure. The spray thickness control system 20 will be described in detail below.

<Thickness control support device>
5(b), the thickness management support device 10 includes at least a display screen 11, an imaging means 12, a storage means 13, a processor 14, an operation means 15, and a communication means 16. The communication means 16 will be described later.

The display screen 11 is composed of a flat panel display such as a liquid crystal display or an organic EL display, and displays moving images and still images captured by the imaging means 12, and information stored in the storage means 13. The imaging means 12 is composed of a so-called camera or video, and has the function of capturing moving images, still images, etc., and acquiring the imaging data.

The storage means 13 stores, for example, video and still images captured by the imaging means 12, and information acquired via the operation means 15. The operation means 15 includes a keyboard having cursor keys, numeric input keys, and various function keys, and a pointing device such as a mouse, and receives operation signals input by key operations, mouse operations, and the like, and outputs them to the storage means 13 and the arithmetic processing device 14. In this embodiment, it is preferable to use an integrated configuration for the display screen 11 and the operation means 15, such as a flat panel display with a touch panel.

The arithmetic processing device 14 includes a CPU, a GPU, a ROM, a RAM, a hardware interface, etc., and executes a predetermined program to realize at least the functions of an image acquisition unit 141, an image analysis unit 142, and a data processing unit 143, which will be described later.

The image acquisition unit 141 has a function of acquiring imaging data captured by the imaging means 12, etc., and the image analysis unit 142 has a function of detecting the specification thickness guideline section 21 and the management guideline section 22 of the spray thickness management jig 1 captured in the acquired imaging data. The data processing unit 143 has a function of organizing data on the position information of the spray thickness management jig 1 and information on the specification thickness guideline section 21 and the management guideline section 22 extracted from the imaging data.

The thickness management support device 10 may be any device, such as a notebook PC, tablet terminal, or smartphone, as long as it has the above functions. In this embodiment, an example is given in which a tablet terminal is used as the thickness management support device 10.

<<How to control spray thickness>>
Below, the procedure for supporting quality control work to control spray thickness using the above-mentioned spray thickness control system 20 will be explained with reference to the block diagram of the spray thickness control system 20 shown in Figure 5 and the work flow in Figure 6.

<Structural work>
First, before constructing the steel frame structure, a spray thickness control jig 1 as shown in Figure 2 (a) or Figures 4 (a) to (c) is installed at a predetermined position on the construction target surface T of the beam members 101 and column members 102 that make up the structure.

As mentioned above, the beam members 101 are installed on the underside of the upper flange, the web, the small end and the underside of the lower flange as shown in FIG. 3(a), and at least one column member 102 is installed on each column surface as shown in FIG. 1. The spacing and number of spray thickness control jigs 1 to be placed in the axial direction of the beam members 101 and column members 102 can be appropriately determined by the site staff or the work manager.

In this way, by installing the spray thickness control jig 1 beforehand and then carrying out structural work, it is possible to omit the work at height required for installing the spray thickness control jig 1. Note that the spray thickness control jig 1 may also be installed on the beam members 101 and column members 102 after structural work has been carried out.

<Fireproof coating work>
Next, the work of spraying the fireproof coating material C is started on the beam members 101 and the column members 102 with the spray thickness control jig 1 installed. When the spraying work is performed manually, the spraying worker can perform the spraying work using as a guide the color types colored for each of the range of the specified thickness L1 and the range of the control allowance L2 on the spray thickness control jig 1. Therefore, even if the spraying worker is not an experienced worker, it is possible to suppress uneven spraying.

The above-mentioned spraying work does not have to be performed by human power, and any spraying device used in the spraying work of fire-resistant coating material C may be used. FIG. 1 illustrates a spraying device 60 including a robot arm A having a spraying means attached to a manipulator, and a running part B that supports the robot arm A. Details of the spraying device 60 are given in JP 2020-20206 A, but the use of such a spraying device 60 makes it possible to reduce the number of people required for the spraying work.

After the above spraying work is completed, the fireproof coating material C is applied to each beam member 101 and column member 102 by pressing with a trowel or other similar work as appropriate to apply a fireproof finish. Note that if the spraying work also serves as the fireproof finish, work such as pressing with a trowel is not necessary.

<Spray thickness control>
As shown in FIG. 5( a ), a site worker or construction manager operates the operation means 15 of the thickness management support device 10 to capture an image of the fireproof coating material C on the beam member 101 and the column member 102 with the imaging means 12 .

Then, the arithmetic processing device 14 receives a command from the image acquisition unit 141 to acquire the captured image data and supplies it to the image analysis unit 142. The arithmetic processing device 14 receives a command from the image analysis unit 142 to detect if the specification thickness guide section 21 and the management guide section 22 are exposed from the fire-resistant coating material C in the captured image data, and displays this on the display screen 11.

Any detection method may be used, but the specification thickness guideline portion 21 and the management guideline portion 22 are colored so as to be distinguishable from each other and from the fire-resistant coating material C. Therefore, it is advisable to appropriately employ a suitable method, such as a conventional method for image processing, such as image recognition, or machine learning, such as supervised learning, that can recognize and extract objects by color, to detect the specification thickness guideline portion 21 and the management guideline portion 22 from the imaging data.

In addition, when the colors corresponding to the specification thickness guide section 21 and the management guide section 22 are specified and extracted from the imaging data, they may be displayed as is on the display screen 11, or the extracted positions may be processed to be easier to see, for example by emphasizing the extracted colors or adding a marker.

Based on this display screen 11, a site worker or construction manager can confirm the position where the specified thickness guideline portion 21 is extracted, that is, the position where the sprayed thickness does not satisfy the specified thickness L1. Also, the site worker or construction manager can confirm the position where only the management guideline portion 22 is extracted, that is, the position where the sprayed thickness satisfies the specified thickness L1 and is sprayed at an economical volume.

Therefore, when the specification thickness guideline 21 is extracted on the display screen 11, the spraying operation is carried out again on the vicinity including that position. Each time the spraying operation is repeated, the above-mentioned confirmation operation is repeated, and the spraying operation is terminated when it is confirmed that the specification thickness guideline 21 is no longer extracted.

After this, when a site worker or construction manager creates a report or the like, they input instruction information regarding data output using the operation means 15 such as a touch panel. When the instruction information is input, the arithmetic processing device 14 receives a command from the data processing unit 143, processes the data stored in the storage means 13 so that it can be output as appropriate, and outputs it to the display screen 11. Alternatively, it outputs it to a so-called output device such as a printer or external storage device connected by wire or wirelessly.

In this way, by adopting the spray thickness management system 20, it is possible to automate a series of tasks related to quality control of spray thickness, from checking the spray thickness to creating reports.

<Other examples of image analysis>
In the spray thickness management system 20, the image data captured by the imaging means 12 may be subjected to image analysis without being processed as described above, but, for example, a composite image may be created by combining a 3D CG image of the building 100 in the BIM data with the image data captured by the imaging means 12, and this composite image may be used.

In this case, it is preferable that the thickness management support device 10 is provided with a communication means 16 for transmitting and receiving data to and from the management server 40 and the terminal device 50 via the communication network 30, as shown in Figures 5(b) and 9.

The communication network 30 may be constructed using the Internet, a dedicated communication line, or the like. The terminal device 50 is a personal computer, a notebook PC, a tablet terminal, a smartphone, or the like that is capable of wireless communication and can transmit and receive data to and from the management server 40 and the terminal device 50.

For example, the management server 40 is a computer system or cloud server capable of transmitting and receiving data to and from the thickness management support device 10 and the terminal device 50 via the communication network 30, and stores BIM data. The BIM data stores design information such as blueprints of the building 100, and is data that can reproduce a three-dimensional model of the building 100 that is identical to the real thing on a computer.

In this way, for example, the arithmetic processing device 14 synthesizes the imaging data acquired by receiving a command from the image acquisition unit 141 with a 3D CG image of the building 100 created from the BIM data acquired from the management server 40 to generate a composite image. The task of synthesizing the real image of the fireproof coating material C with the 3D CG building 100 can be performed using so-called AR (Augmented Reality) technology, which displays an image combining a real image and digital information on the display screen 11 in real time.

Next, the arithmetic processing device 14 receives a command from the image analysis unit 142 to extract the specification thickness guideline section 21 and the management guideline section 22 from the captured image data on the composite image, recomposites this extracted image with the 3D CG image of the building 100, and displays it on the display screen 11. All of this information acquired by the thickness management support device 10 is stored in the memory means 13.

In this way, the positions where the specification thickness guide section 21 and the management guide section 22 are extracted can be grasped more accurately, and at the same time, the position information can be obtained based on the BIM data. Note that the design information for the building 100 is not necessarily limited to BIM data, and can be digital data such as 3D CAD data.

In addition, other workers who are in a location away from the construction office or the work site can carry the terminal device 50 and obtain the data stored in the memory means 13 of the thickness management support device 10 via the communication means 16 and the communication network 30, and can view the data or use it as material for creating reports.

The information stored in the memory means 13 of the thickness management support device 10 is not limited to the image data of the fireproof coating material C captured after the spraying work is completed, the extracted data of the specification thickness guide section 21 and the management guide section 22, and their position information, etc.

For example, it is advisable to take an image of the construction target area T with the spray thickness control jig 1 installed before the spraying work. In this way, by generating a composite image with a 3D CG image of the building 100, the position information of the spray thickness control jig 1 can be obtained. As a result, even if both the specification thickness guide section 21 and the control guide section 22 are embedded in the fireproof coating material C after the spraying work, it is possible to identify the position where the spray thickness exceeds the control target.

By adopting the above-mentioned spray thickness management system 20, data such as the spray thickness status and position information obtained from each spray thickness management tool 1 can be consolidated and centrally managed, and the managed data can also be used for report creation, etc., thereby supporting the quality control work of construction managers and improving efficiency.

The spray thickness control tool 1, the spray thickness control method, and the spray thickness control system 20 of the present invention are not limited to the above-described embodiment, and various modifications are possible without departing from the spirit of the present invention.

For example, in this embodiment, the semi-dry rock wool method is used as an example, but other methods may also be used to spray the fireproof coating material C.

In addition, in this embodiment, the thickness confirmation member 2 constituting the spray thickness control jig 1 is set to a length L that is the specified thickness L1 plus the control allowance L2, but it may be formed to be longer than this. Alternatively, it may be configured to have a length that ensures at least the specified thickness L1, and only the specified thickness guide portion 21 is provided.

In addition, in this embodiment, the imaging means 12 such as a camera provided in the thickness management support device 10 is used to capture an image of the fireproof coating material C and obtain the image data, but this is not necessarily limited to this. It is also possible to use image data captured by other imaging devices as long as the data is digital data.

1 Spray thickness control jig 2 Thickness confirmation member 2a Base end side 2b Tip end side 21 Specified thickness guide section 22 Control guide section 23 L-shaped plate material 24 Angle plate material 3 Fixed member L1 Specified thickness L2 Control fee 10 Thickness control support device 11 Display screen 12 Imaging means 13 Storage means 14 Processing device 15 Operation means 16 Communication means 20 Spray thickness control system 30 Communication network 40 Management server 50 Terminal device 60 Spraying device 100 Building 101 Beam member 102 Column member A Robot arm B Traveling part C Fireproof coating material T Construction target surface

Claims (3)

A spray thickness control tool for controlling the spray thickness of a fireproof coating material,
A thickness confirmation member arranged to protrude perpendicularly from a construction target surface of a steel frame structure ;
A fixing member for fixing the thickness confirmation member to the target surface,
The fireproof coating material is made of a material containing rock wool granules and a cement-based hardening material,
The thickness confirmation member is provided with a specification thickness guide portion that indicates a guideline of a specification thickness required for the fire-resistant coating material sprayed onto the application target surface , and a control guide portion that indicates a guideline of a control allowance that is a target for the surface position of the fire-resistant coating material ,
A spray thickness control jig characterized in that the specification thickness guide portion and the control guide portion are colored differently from the fire-resistant coating material and differently from each other . A method for controlling the thickness of a fireproof coating material sprayed onto a surface to be treated using the spray thickness control tool according to claim 1, comprising:
Attaching the spray thickness control jig to the target surface;
A step of spraying the fireproof coating material on the surface to be treated;
A step of controlling the specified thickness of the fire-resistant coating material by detecting the specified thickness guide portion exposed from the fire-resistant coating material sprayed on the application target surface by a colored color ;
A method for controlling spray thickness comprising: The spray thickness control jig according to claim 1 ;
a thickness management support device that supports management of the specification thickness of a fireproof coating material sprayed onto a surface to be treated;
A spray thickness management system comprising:
The thickness management assistance device,
an image acquisition unit that acquires image data of the fireproof coating material sprayed onto the work target surface to which the spray thickness confirmation jig is attached;
an image analysis unit that detects the specified thickness guide portion exposed from the fire-resistant covering material by coloring the image data;
A spray thickness control system comprising:

Images