JP2016020578A - Scraping device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a scraping device capable of lessening the waste of work in carrying out sequential scraping work of a plurality of workpieces to be continuously scraped.SOLUTION: A scraping device of building materials includes conveying means 11 capable of sequentially conveying a plurality of the building materials carried into a work room 12 from the outside along a conveying passage so as to be carried to the outside, and scraping means 13 for carrying out scraping work of the building materials conveyed into the work room. The scraping device includes imaging means 9 provided in a halfway of the conveying passage on an upstream side of an installation position of the scraping means 13 and imaging a surface of the building materials conveyed through the conveying passage, and work degree control means 20 for changing a work degree to the building materials on the basis of image data captured by the imaging means 9.SELECTED DRAWING: Figure 2

Description

  TECHNICAL FIELD The present invention relates to a metal workpiece keren device, and more particularly to a kelen device for removing deposits adhering to building materials such as a temporary scaffolding building frame and scaffolding plate used in construction work and the like.

  Various building materials such as scaffolding pillars, treads, scaffolding boards, clamps, etc. adhere to the surface due to cement, mortar, paint, etc. when used on site. There have been proposed various kelen apparatuses that automatically perform keren work for removing the deposits.

  Examples of keren devices include non-contact types such as mechanical keren means that strikes a hammer or the like against a deposit to remove dirt, and multiple nozzle heads that inject pressure water onto a work such as building material. There has been known a kelen apparatus comprising the above-mentioned kelen means, and keeling the work with pressure water while moving at least one of the nozzle heads and the work with respect to the moving direction of the work. These apparatuses are described in Patent Document 1 (Japanese Patent Laid-Open No. 9-279842), Patent Document 2 (Japanese Patent Laid-Open No. 2001-9390), and the like as an example.

  The keren devices disclosed in these patent documents are arranged between the supply conveyor and the take-out conveyor, perform the kelen work on the work continuously conveyed from the supply conveyor, and discharge the work from the take-out conveyor to the outside. Configure a fully automatic cleaning line. The keren device removes deposits adhering to the workpiece flowing through the fully automatic cleaning line by discharging high pressure water from the nozzle head while continuously conveying the workpiece into the working chamber. This is performed by appropriately adjusting the pressure of the high-pressure water from the nozzle head and the removal operation time according to the degree of contamination of the workpiece.

  The basic operation is common in the kelen apparatus having the mechanical keren means, and the kelen work of the work conveyed by the conveyor is advanced by means according to the functional characteristics of the keren means.

Japanese Patent Laid-Open No. 9-279842 JP 2001-9390 A

  However, these keren devices perform keren work processing sequentially for a large number of workpieces. However, the quality and degree of contamination of building material workpieces vary depending on the location of use. When such a cleansing work is performed, there is a problem that a sufficiently dirty work cannot be carried out on a heavily soiled work. For this reason, it is necessary to determine the work level on the basis of the work with the most severe dirt, and as a result, excessive work is performed on the lightly dirty work included in the series of works. This was a waste of time and increased running costs.

  Moreover, even with a single workpiece, there are portions where the adhesion of dirt is intense and portions where this is not the case, and performing the cleaning operation uniformly as a whole workpiece has the same problem as above. It was.

  Therefore, the technical problem to be solved by the present invention is to provide a kelen apparatus that can reduce the waste of work when sequentially working a plurality of works on which keren work is continuously performed.

  In order to solve the above technical problem, the present invention provides a building material kelen apparatus having the following configuration.

The building material keren device according to the present invention includes a conveying means capable of sequentially and sequentially conveying a plurality of building materials carried into the work chamber from the outside along the conveyance path, and conveying the building material to the outside. A building material keren device having keren means for performing keren work on the building material,
An imaging means for photographing the surface of the building material that is provided in the middle of the conveyance path upstream from the installation position of the keren means, and is conveyed along the conveyance path;
And a work degree control means for changing the work degree of the building material based on the photographing data by the photographing means.

  The work degree control means is configured to change the work degree by the keren means for each section along the transport direction for the building material, depending on the degree of keren work required for the arbitrary building material. Even when one building material is partially soiled, it is possible to proceed with cleansing without waste.

  The photographing means photographs the building material so as to include an identification mark including information that can specify the work degree attached to the surface of the building material, and the work degree control means is captured in the image. By changing the work level at the timing when the identification mark is transported so that it enters the keren work area by the keren means, the work level can be changed with the identification mark as a reference. It becomes easy to change the degree of work partially. Further, by using a plurality of types of identification marks, it is possible to achieve a work level corresponding to that, and a finer work level can be realized.

  Here, the identification mark can be provided by the operator confirming the building material and sticking it on the surface of the building material according to the degree of contamination.

And a monitor for displaying an image of the building material photographed by the photographing means;
An area designating unit for designating a degree designating area of the building material displayed on the monitor;
The work degree control means changes the work degree at a timing when the degree designated area designated by the area designation means is transported so as to fall within the keren work area by the keren means, so that By setting the degree designation area while visually recognizing the image and setting the work degree according to the area, the cleansing work can be advanced according to the actual degree of dirt.

  The work level control means stores work performance data recorded by associating an image of a building material imaged in the past with a work level executed for the building material. Compared with the photographed building material image of the work target, the degree of dirt on the building material of the work target is judged, and the building material of the work target is referred to by referring to the work level of the work result data that is the comparison By determining the degree of work, it is possible to proceed with work based on past work results.

  The work level control means can change the work level by controlling the relative speed between the building material and the keren means to change, for example, by changing the transport speed of the transport means, It is possible to reliably change the work level with an easy configuration.

  The keren means is preferably provided with a nozzle for discharging the kelen material, which is movable in a working chamber in a direction intersecting the conveying direction of the building material by the conveying means. Any non-contact type such as sand blasting may be used, and in any case, deposits are removed by spraying a kelen material from a nozzle disposed on the surface facing the building material. However, the keren means can be a kelen apparatus which is simple and excellent in handling by using water jet means for discharging high pressure water from the nozzle as the kelen material.

  In addition, it is preferable that the keren means has a nozzle unit in which the nozzle is provided at both ends, and the nozzle is moved in the working chamber in a direction intersecting with a conveying direction of the building material by the rotation of the nozzle unit. .

  According to the Keren device for building materials of the present invention, when sequentially working a plurality of works that are subjected to Keren work sequentially, the building materials to be worked are photographed, and the degree of work is changed based on the photographing results Can reduce the waste of keren work

It is the schematic which shows typically the layout structure of the fully automatic washing line containing the kelen apparatus of the building material concerning embodiment of this invention. It is a figure which shows the structure of the keren apparatus of the building material concerning embodiment of this invention. It is a figure which shows the structure of the water jet nozzle used for the keren apparatus of FIG. It is a figure which shows the arrangement configuration of the spraying area | region of the footboard for scaffolds in the working room of the keren apparatus of FIG. 2, and a water jet nozzle. It is a figure which shows arrangement | positioning structure of the spraying area | region of the footboard for scaffolds and the water jet nozzle in the working room concerning a modification. It is a figure which shows arrangement | positioning structure of the spraying area | region of the foot board for scaffolds and the water jet nozzle in the working room concerning the further modification. It is a functional block diagram of washing degree determination in system configuration example 2. It is a functional block diagram of washing degree determination in system configuration example 3.

  Hereinafter, a kelen apparatus for building materials according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic view schematically showing a layout configuration of a fully automatic cleaning line including a building material kelen apparatus according to an embodiment of the present invention.

  FIG. 1 is a plan view of a fully automatic washing line 1 including a kelen apparatus for removing concrete adhering to a scaffolding tread, and a supply conveyor 3 and a takeout conveyor for a conveying path 2 that supports and feeds a scaffold tread A horizontally. 4 is a configuration in which a kelen apparatus 10 for removing the adhered concrete and the like of the scaffolding tread A passing therethrough is disposed.

  The supply conveyor 3 constituting the conveyance path 2 is stocked in a state in which the scaffolding footboard A as a work is overlapped, and the stocking footboard A that has been stocked is sequentially supplied to the supply conveyor 3 one by one. The take-out conveyor 4 is provided with a discharge device 6 that takes out the footboard A for scaffolding A, which has been carried out from the keren device, and piles it up from the take-out conveyor 4.

  The supply device 5 includes a conveyor 5a that feeds the footboard A for scaffolds stacked and stocked to the supply conveyor 3 side, and a robot 5b that places the footsteps A for scaffolding disposed on the conveyor 5a one by one on the supply conveyor 3. Consists of Further, the discharging device 6 also includes a conveyor 6a arranged in a state where the scaffolding tread A sent from the takeout conveyor 4 is stacked, and a robot 6b that stacks the scaffolding tread A sent from the takeout conveyor 4 on the conveyor 6a. I have.

  The fully automatic washing line 1 sends the footboards A for washing before stocking stocked in the supply device 5 one by one to the supply conveyor 3, passes through the conveyance path 2 to the keren device 10 by the supply conveyor 3, and then passes the keren. The cleansing work is performed by the device 10 and the washed footboard A, which has been transported by the takeout conveyor 4, is stored in a stacked state on the discharge device 6. At this time, in each downstream apparatus, the supply conveyor 3, the extraction conveyor 4, the supply apparatus 5, and the discharge apparatus 6 are independently set so as to stand by until the operation process to the scaffolding plate A is completed. Operates at precise timing.

  On the other hand, the keren device 10 is configured to be able to change the degree of cleaning of the kelen work by the kelen device 10 (working degree) according to the degree of dirt on the individual footsteps A for the scaffold, as will be described later. Due to this operation control, the time required for the cleaning work of one scaffolding tread A varies. That is, in the fully automatic cleaning line 1, the operation timings of the supply conveyor 3, the extraction conveyor 4, the supply device 5, and the discharge device 6 are controlled based on the cleaning operation of the keren device 10.

  As shown in FIG. 2, the keren apparatus 10 includes a conveyor 11 as an example of a conveying unit and a work chamber 12 provided in the middle of the conveyor 11. The conveyor 11 is provided with a distance detection function so that the transport distance can be detected with respect to the transport distance of the predetermined scaffold tread A. In the work chamber 12, two water jet nozzles 13 as an example of a keren means are provided. The keren device 10 is formed on the surface of the scaffolding tread A by high-pressure water discharged from the water jet nozzle 13 when the scaffolding tread A conveyed by the conveyor 11 whose drive speed can be adjusted passes through the work chamber 12. Clean up the attached dirt. The water jet nozzle 13 that discharges high-pressure water is connected to the high-pressure generator 7, and high-pressure water that has been pressurized by the high-pressure generator 7 is discharged.

  As shown in FIG. 3, the water jet nozzle 13 is configured as a nozzle unit 15 that includes nozzles 14 that discharge high-pressure water sent from the high-pressure generator 7 at both ends. The nozzle unit 15 is attached to the connecting pipe 16 so as to be rotatable around a rotation axis that is substantially perpendicular to the main surface of the conveyor 11, and the nozzle unit 15 is a nozzle reactive reaction force from the high-pressure water nozzle 14 supplied through the connecting pipe 16. The entire unit 15 rotates freely as indicated by an arrow 90. The rotation of the nozzle unit 15 causes the nozzle 14 to move on a wide surface in the width direction of the scaffolding tread A, so that high-pressure water can be sprayed over a wide area, and the entire scaffold tread A can be washed evenly.

  FIG. 4 is a diagram illustrating an arrangement configuration of the footboard for scaffolding and the spray area of the water jet nozzle in the working room of the keren apparatus according to the present embodiment. In the kelen apparatus 10 according to the present embodiment, the water jet nozzle 13 is fixed to the work chamber, and the high pressure water spraying region 13a is a constant region near the rotation region of the nozzle unit 15, and thus is conveyed by the conveyor 11. Keren work is performed at the timing when the footrest A for scaffolding moved to the high pressure water spray region.

  The conveyor 11 conveys one scaffold tread A continuously or appropriately, and the degree of cleaning is set according to the time when the high pressure water is sprayed and the discharge pressure of the high pressure water. can do. In the keren apparatus 10 according to the present embodiment, as will be described later, the transport speed of the scaffolding tread A is adjusted, and the keren work corresponding to the degree of dirt on the individual scaffolding tread A can be performed.

  As shown in FIG. 1, the keren device 10 includes a dark room 8 for photographing on the transport path 2 on the upstream side of the keren device 10. In the present embodiment, the dark room 8 is provided on the downstream side of the supply conveyor 3, but may be provided on the conveyor 11 of the keren apparatus 10.

  A camera 9 is provided in the dark room 8 and images the surface of the footrest A for scaffold passing through the dark room 8. The imaging result by the camera 9 is used to determine the degree of cleaning of the keren apparatus 10 as will be described later. The camera 9 is preferably a color camera, but a monochrome camera may be used. Further, an illumination device (not shown) is provided in the dark room 8 so that the photographing conditions are constant.

  The keren device 10 determines the degree of dirt on the surface of the scaffold tread A based on the image captured by the camera 9 and changes the degree of cleaning according to the degree of dirt. The degree of cleaning can be adjusted by the time during which high-pressure water is sprayed, and as an example, the relative speed of the water jet nozzle 13 and the scaffolding plate A can be varied by adjusting the transport speed of the conveyor 11. In this embodiment, since the water jet nozzle 13 is fixed as described above, the degree of cleaning according to dirt is adjusted by changing the driving speed of the conveyor 11.

  The degree of cleaning may be adjusted for each scaffold tread A, or as shown in FIG. 4, may be different for each continuous section in the transport direction of the scaffold tread A. That is, the degree of contamination of each scaffold tread A can be determined from an image captured by the camera, and the degree of cleaning of the entire scaffold tread A can be determined according to the degree, as shown in FIG. As described above, the portion 80 with a high degree of contamination may be used as the high cleaning section. That is, in the high cleaning section, a high level of cleaning can be performed by setting the conveyance speed of the conveyor 11 to be lower than the reference speed and extending the residence time in the high pressure water spray region 13a.

  FIG. 5 is a diagram illustrating an arrangement configuration of a footboard for scaffolding and a spray region of a water jet nozzle in a working room according to a modified example. In this modification, as shown by an arrow 92, the water jet nozzle 13 is configured to be movable along the transport direction of the scaffolding tread A as a whole, and the scaffolding tread that is in the middle of transporting the water jet nozzle 13 is shown. The degree of cleaning is changed by moving relative to A.

  In the present modification, as described above, the water jet nozzle 13 moves as indicated by the arrow 92, thereby adjusting the time during which a specific section of the scaffolding tread A during transportation stays in the high pressure water spray area 13a. . That is, as shown in FIG. 5, when the transport direction 91 and the movement direction of the water jet nozzle 13 are opposite to each other, the residence time can be shortened. On the other hand, if both move in the same direction, the scaffolding step board A The residence time can be extended without wasting the overall work time. Therefore, both movements can be controlled in accordance with the degree of dirt on the scaffolding board A.

  Further, when a high cleaning section is partially required as shown in FIG. 5, a higher degree of cleansing work is performed by turning back the moving direction of the water jet nozzle 13 in the section as shown by an arrow 93. be able to.

  FIG. 6 is a diagram illustrating an arrangement configuration of a footboard for scaffolding and a spray region of a water jet nozzle in a working chamber according to a further modification. In this modification, as shown by an arrow 94, the water jet nozzle 13 is configured to be movable in the transport direction and the width direction of the scaffold tread A as a whole, and the water jet nozzle 13 is used for a scaffold in the middle of transport. The degree of cleaning is changed by moving the conveyance direction and the width direction relative to the tread plate A.

  In the present modification, as described above, the water jet nozzle 13 also moves in the width direction as indicated by the arrow 94, so that the high pressure water spray region 13a of the wide scaffolding tread A for transportation can be secured. . Further, the dwell time can be adjusted by adjusting the transport direction 91 and the movement direction of the water jet nozzle 13 as in the previous modification.

  Next, adjustment control of the degree of cleaning of the keren apparatus according to the present embodiment will be described. The keren apparatus 10 according to the present embodiment is configured so that the conveyance speed of the conveyor 11 can be changed to multiple stages, for example, three stages (4 m / min, 8 m / min, 16 m / min) and is selected. The operation is performed using the transport speed as the reference speed.

  As shown in FIG. 2, the operation of the keren apparatus according to the present embodiment is controlled by the control calculation unit 20. The control calculation unit 20 includes a cleaning degree determination unit 20a and a conveyor control unit 20b, determines the degree of contamination based on the captured image, and needs to be changed from the reference speed according to the determined cleaning degree. In this case, the conveyor conveyance speed is switched and controlled. The changed transport speed includes a case where the conveyor 11 is stopped in a state where a specific section of the scaffolding tread A is present in the high pressure water spray region 13a, and when the stop control is performed, The time for stopping the conveyor 11 is also specified.

  The transfer speed of the conveyor may be switched for each scaffold tread A as described above, or may be performed for each section arbitrarily divided in the transport direction of one scaffold tread A. As described above, switching of the conveyor conveyance speed accompanying a change in the degree of cleaning can be realized by, for example, the following system configuration example listed below.

(System configuration example 1)
In this system configuration example, markings are provided on necessary parts of the surface of the scaffolding tread A on the scaffold tread A received by visual inspection at the acceptance stage, and the marking is obtained from the image captured by the camera 9 by the cleaning degree determination unit 20a. And the conveyor 11 is driven at the conveyance speed specified by the marking.

  In general, the scaffold tread A is required to perform an inspection operation such as an inspection for confirming damage at the stage of arrival. Therefore, depending on the degree of contamination on a specific portion of the scaffold tread A during the inspection operation. The marking operation is performed, and the conveyance speed is controlled using the marking. As an example of marking, it is preferably used that adhesion and detachment such as paint using paint or a seal are easy. Further, the marking can identify multi-stage transport speeds that can be adopted by the keren apparatus 10, and paint colors, identifiers attached to the seal surface, and the like are used.

  Each of the markings corresponds to a conveyance speed set in multiple stages, and the scaffold tread A to which the marking is attached is conveyed at a conveyance speed specified by the marking by the conveyor control unit 20b. To be controlled. One place may be sufficient with respect to the one footboard A for scaffolding, and multiple places may be sufficient as it. When switching the transport speed for the entire scaffold tread A, the marking is indicated by the timing at which the conveyor 11 transports a distance corresponding to the area between the high-pressure water spraying area 13a from the position captured by the camera 9. Control to switch to the conveyance speed.

  On the other hand, when marking is given to a plurality of locations, the conveyance speed may be changed at the timing when the section with the marking reaches the high pressure water spraying region 13a.

  In this system configuration example, the inspector visually determines the cleaning level, recognizes markings as necessary, and determines the transport speed, so the system configuration is easy and the transport speed is controlled according to the cleaning level. can do.

(System configuration example 2)
FIG. 7 is a functional block diagram of determination of the degree of cleaning in the system configuration example 2. In this system configuration example, a monitor 21 that displays an image of the scaffolding tread A taken by the camera 9 and a region designation unit 22 that designates the degree of cleaning of the scaffold tread A displayed on the monitor 21 for each region are provided. ing.

  A specific example of the area designating unit 22 may be anything that can perform area designation and conveyance speed designation, and is preferably an input means using a GUI such as a touch panel that directly operates the screen of the monitor 21.

  The operator of this apparatus operates the area designating unit 22 while confirming the image of the scaffold tread A taken by the camera on the monitor 21, and the dirt 80 is different from other areas. A degree designation region 80a for carrying at a speed other than the carrying speed is designated. In addition, a desired conveyance speed is designated for the degree designation area 80a.

  The position of the degree designation area 80a on the monitor 21 is used for calculation of the conveyance direction distance from the actual origin of the footboard A for scaffolding A (for example, the beginning of the conveyance direction), and based on the calculation result and the conveyance distance of the conveyor 11. The conveyance speed is changed at the timing when the section corresponding to the degree designation area 80a reaches the high pressure water spraying area 13a.

(System configuration example 3)
FIG. 8 is a functional block diagram of the cleaning degree determination in the system configuration example 3. This system configuration example is obtained by adding a function of correcting the conveyance speed for the designated degree designation region 80a in the system configuration example 2 based on the past cleaning results.

  This system configuration example includes a monitor 21 that displays an image of the scaffold tread A captured by the camera 9, a region designation unit 22 that designates the degree of cleaning of the scaffold tread A displayed on the monitor 21 for each region, A work performance database 23 is provided which stores work performance data recorded in association with images of building materials imaged in the past and the degree of cleaning performed on the building materials.

  In the present configuration example, the scaffold tread A photographed by the camera 9 is displayed on the monitor 21 and the degree designation area 80a is designated while being confirmed on the monitor 21, and the desired conveyance for the degree designation area 80a. The point of designating the speed is common to the system configuration example 2.

  This configuration example is different in that the cleaning degree determination unit 20a corrects the conveyance speed based on the past cleaning results stored in the work result database 23. The work performance database 23 is classified according to the type of the scaffold tread A, and stores the images of the scaffold tread captured in the past and the conveyance speed executed for the scaffold tread A in association with each other. The cleaning degree determination unit 20a compares the photographed image stored in the work performance database 23 with the photographed image of the scaffold tread A. The degree of dirt on the scaffolding board A to be cleaned is determined, and the degree of cleaning of the scaffolding board A to be cleaned is determined by referring to the degree of cleaning of the work result data stored in the comparison work result database. decide. In addition, when there are a large number of similar stains, statistical processing is performed by means such as averaging of the respective conveyance results, and an appropriate conveyance speed is calculated. If the determination result is significantly different from the input conveyance speed, an error display is performed. The operator of this apparatus reviews the transport speed based on the error display.

  When the keren work is executed in this way, the image of the scaffold tread A and the transport record are stored in the work record database 23 in association with each other.

  In addition, when sufficient work results are accumulated in the work result database 23 and the determination result by the image is obtained without the input of the conveyance speed by the operator, the operator's input is omitted and the determination by the full automatic is performed. May be.

  As described above, according to the keren device 10 according to the present embodiment, the degree of cleaning can be varied according to the actual degree of contamination of the scaffolding tread A, so that the entire series of scaffolding tread A is uniform. Compared with the case where the degree of cleaning is determined, the number of treatments per unit time can be increased, and the waste of high-pressure water that is a keren agent can be reduced.

  In addition, this invention is not limited to the said embodiment, It can implement in another various aspect. For example, the keren device is not limited to any kind of keren means as long as the kelen work is performed by the kelen means at the timing when the building material conveyed by the conveyor passes through the work chamber. May be used.

  In the above system configuration example, the degree of cleaning is changed by changing the conveyance speed of the conveyor 11, but for example, the discharge pressure of high-pressure water from the nozzle may be changed. In addition, when the water jet nozzle 13 moves, the degree of cleaning can be changed by changing the relative speed between the footboard A for scaffolding and the water jet nozzle 13.

  Furthermore, in the above system configuration example, manual input by an operator is performed to determine the degree of cleaning, and the input is appropriately corrected based on an image captured by the camera. May determine the degree of cleaning. For example, in the case of building materials used for specific purposes, the type of dirt is determined, and the presence or absence of the dirt may be determined by color. In this case, the degree of cleaning may be automatically determined by extracting colors from the captured image.

DESCRIPTION OF SYMBOLS 1 Fully automatic washing line 2 Conveyance path 3 Supply conveyor 4 Unloading conveyor 5 Supply apparatus 5a Conveyor 5b Robot 6 Ejection apparatus 6a Conveyor 6b Robot 7 High pressure generator 8 Dark room 9 Camera 10 Keren apparatus 11 Conveyor 12 Work room 13 Water jet nozzle 13a Spray area 14 Nozzle 15 Nozzle unit 16 Connecting pipe 20 Control calculation section 20a Work level determination section 20b Conveyor control section 21 Monitor 22 Area designation section 23 Work performance database 80 Dirt 80a degree designation area

Claims (10)

A transport means capable of sequentially and sequentially transporting a plurality of building materials carried into the work chamber from the outside along the transport path, and a keren for performing the keren work on the building materials transported into the work chamber A building material keren device having means,
An imaging means for photographing the surface of the building material that is provided in the middle of the conveyance path upstream from the installation position of the keren means, and is conveyed along the conveyance path;
A building material keren device comprising: a work degree control means for changing a work degree of the building material based on photographing data by the photographing means.   The work degree control means changes the work degree by the keren means for each section along the transport direction for the building material according to the degree of keren work required for the arbitrary building material. The building material keren device according to claim 1.   The photographing means photographs the building material so as to include an identification mark including information that can specify the work degree attached to the surface of the building material, and the work degree control means is captured in the image. The construction material keren device according to claim 1 or 2, wherein the work degree is changed at a timing when the identification mark is conveyed so as to enter the kelen work area by the keren means. And a monitor for displaying an image of the building material photographed by the photographing means;
An area designating unit for designating a degree designating area of the building material displayed on the monitor;
The work degree control means changes the work degree at a timing when the degree designation area designated by the area designation means is transported so as to fall within the keren work area by the keren means. Or the building material keren device of 2.   The work level control means stores work performance data recorded by associating an image of a building material imaged in the past with a work level executed for the building material. Compared with the photographed building material image of the work target, the degree of dirt on the building material of the work target is judged, and the building material of the work target is referred to by referring to the work level of the work result data that is the comparison The construction material keren device according to claim 4, wherein the work degree is determined.   The said work level control means changes a work level by controlling so that the relative speed of the said building material and the said keren means may change, It is any one of Claim 1 to 5 characterized by the above-mentioned. Keren equipment for building materials.   The construction work keren device according to claim 6, wherein the work degree control means changes the work degree by changing a transport speed of the transport means.   The said keren means is provided with the nozzle which discharges kelen material which can move in a working chamber in the direction which cross | intersects with respect to the conveyance direction of the building material by the said conveyance means, It is any one of Claim 1 to 7 characterized by the above-mentioned. Equipment for building materials described in 1.   The building material keren device according to claim 8, wherein the keren means is water jet means for discharging high-pressure water as the kelen material from the nozzle.   The keren means has a nozzle unit in which the nozzles are provided at both ends, and the nozzle unit is moved in a work chamber in a direction intersecting with a conveying direction of building materials by rotation of the nozzle unit. The keren device according to claim 9.

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