JP2022158023A - Skill evaluation system, skill evaluation program, skill evaluation method, and skill evaluation device - Google Patents

Abstract

To provide a system, a skill evaluation program, a skill evaluation method, and a skill evaluation device that allow an examinee to acquire a high-precision and appropriate tightening skill associated with flange tightening work.SOLUTION: A skill evaluation system 2 includes a tightening work unit 4, an information acquisition unit 6, and a processing unit 8. The tightening work unit 4 tightens a gas bolt and a nut to perform fastening work of a flange. Work information including axial force applied to the flange from the bolt and distances between facing flange surfaces at a plurality of points is acquired, evaluation items 14 including at least (1) a bolt axial force value, (2) a variation of axial force values, and (3) parallelism of a flange surface are set, and skill evaluation information and a comprehensive evaluation result screen are generated by comparing the work information 12 with reference information 18 for each evaluation item.SELECTED DRAWING: Figure 2

Description

TECHNICAL FIELD The present invention relates to techniques for evaluation and advice presentation for skill evaluation and skill acquisition of flange tightening work with a gasket sandwiched therebetween.

When connecting pipes, gaskets are sandwiched between flanges provided at the ends of the pipes to prevent gas, liquid, etc. flowing in the pipes from leaking from the joints. Connection of such pipes requires the work of tightening a plurality of bolts and nuts against the opposed flanges. In the tightening work of the flange, tighten with the specified procedure and specified tightening torque. The gasket exerts its sealing performance when it is constructed under specified conditions.

Regarding such flange tightening work, the output signals of strain gauges installed on a plurality of bolts are received, and the output signal variation during tightening work, the output signal variation when tightening work is completed, and the tightening work when tightening work is completed. is calculated, and the skill level is determined from these (for example, Patent Document 1). In addition, regarding seal construction, there is a method that generates axial force distribution information from bolt axial force and position information that tightens a flange joint, presents and monitors the axial force distribution information (for example, Patent Document 2).

JP 2015-217497 A JP 2017-161388 A

By the way, the gasket sandwiched between the flanges can be tightened with an appropriate axial force to multiple joints by bolts and nuts, and the axial force of tightening between each joint is uniform. It exerts a sealing function for the connection part of the pipes used.
JIS (Japanese Industrial Standards) and other standards clearly specify detailed construction standards for tightening flanges using gaskets. It is a natural premise that workers are familiar with this construction standard.
However, even if the tightening work is performed with a thorough knowledge of such construction standards, it is important to accumulate experience through construction training. Many pipe connections using flanges are often arranged in plant equipment. It is not possible to check with a sensor or the like whether or not it is. In the tightening work, for example, even if it is determined that the tightening has been done according to the regulations according to the procedure in accordance with the standard, there is a possibility that the inclination of the flanges and the unevenness of the axial force between the bolts that cannot be detected by the naked eye will occur. There is a problem that there is

The inventor of the present invention comprehensively evaluates the multiple skills required for fastening in an appropriate state, and indicates the points that are lacking for each individual skill. I got the knowledge that I can deepen my understanding of

Patent Documents 1 and 2 do not disclose or suggest such problems, and the structures disclosed in these documents cannot solve such problems.
Therefore, based on such knowledge, the present invention makes it possible to grasp the relationship between the evaluation of the skills required for tightening work and the overall evaluation result of the tightening state, and to acquire high-precision and appropriate tightening skills. for the purpose.

In order to achieve the above object, according to one aspect of the skill evaluation system of the present invention, there is provided a skill evaluation system for evaluating the tightening skill of a flange sandwiching a gasket, wherein the gasket is sandwiched between the flanges, and the bolt and nut and an information acquiring means for acquiring work information including at least the axial force applied from the bolt to the flange and the inter-face distance at a plurality of locations on the opposing flange surfaces; at least,
(1) Axial force value of bolt
(2) Variation of axial force value
(3) Set evaluation items for the parallelism of the flange surface, generate skill evaluation information by comparing the work information and reference information for each evaluation item, and use these skill evaluation information to determine fastening skills. A processing unit for generating a comprehensive evaluation result and generating a skill evaluation screen including the skill evaluation and the comprehensive evaluation result.

In the skill evaluation system described above, the information acquisition means acquires the work information including work time information of the fastening work and fastening position information of the bolt, and the processing unit further:
(4) Fastening time
(5) setting either one or both of the evaluation items of the fastening work procedure, generating the skill evaluation information based on the results of comparison between the set evaluation items and the reference information corresponding to the evaluation items, and The overall evaluation result may be generated using skill evaluation information.
In the skill evaluation system, the processing unit sets classification information set according to the difference value of the detected axial force value with respect to the reference information for each bolt, and based on the distribution range of the classification information The skill evaluation information may be generated.
In the skill evaluation system, the processing unit generates advice information for the skill evaluation for each evaluation item, and displays the advice information on the skill evaluation screen or on another screen associated with the skill evaluation screen. you can

In order to achieve the above object, according to one aspect of the skill evaluation program of the present invention, there is provided a skill evaluation program for being realized by a computer, wherein a bolt and a nut are tightened to fasten a flange, and from the bolt to the flange A function of acquiring work information including the applied axial force and the inter-face distance of multiple locations of the facing flange faces, and at least
(1) Axial force value of bolt
(2) Variation of axial force value,
(3) A function that sets evaluation items for the parallelism of the flange surface, generates skill evaluation information by comparing the work information and reference information for each evaluation item, and uses these skill evaluation information to determine fastening skills. and a function of generating a skill evaluation screen including the skill evaluation and the overall evaluation result.

In the skill evaluation program, a function of acquiring the work information including the work time information of the fastening work and the fastening position information of the bolt from the information acquisition means;
(4) Working hours
(5) A function of setting one or both of the evaluation items of the work procedure, and a function of generating the skill evaluation information based on the result of comparison between the set evaluation items and the reference information corresponding to the evaluation items. and a function of generating the overall evaluation result using the skill evaluation information.
In the skill evaluation program, for each bolt, classification information set according to the difference value of the detected axial force value with respect to the reference information is set, and the skill evaluation information is evaluated based on the distribution range of the classification information. May include functionality to generate.
The skill evaluation program may include a function of generating advice information for the skill evaluation for each evaluation item and displaying the advice information on the skill evaluation screen or on another screen associated with the skill evaluation screen. .

In order to achieve the above object, according to one aspect of the skill evaluation method of the present invention, there is provided a skill evaluation method for evaluating the skill of fastening a flange with a gasket sandwiched therebetween. acquiring work information including the axial force applied to the flange from the bolt and the inter-face distance at a plurality of locations on the opposing flange faces;
(1) Axial force value of bolt
(2) Variation of axial force value,
(3) A step of setting evaluation items for the parallelism of the flange surface, comparing the work information with the reference information for each evaluation item to generate skill evaluation information, and using these skill evaluation information to determine the fastening skill and generating a skill evaluation screen including the skill evaluation and the overall evaluation result.

In the skill evaluation method, an information acquisition unit that acquires work information including the axial force applied from the bolt to the flange and the distance between the faces of the opposing flange surfaces at a plurality of locations;
(1) Axial force value of bolt
(2) Variation of axial force value,
(3) Set evaluation items for the parallelism of the flange surface, generate skill evaluation information by comparing the work information and reference information for each evaluation item, and use these skill evaluation information to determine fastening skills. A control unit that generates a comprehensive evaluation result and generates a skill evaluation screen including the skill evaluation and the comprehensive evaluation result.

ADVANTAGE OF THE INVENTION According to this invention, one of the following effects is acquired.

(1) For work information including axial force value, axial force dispersion state, and flange parallelism, by combining individual skill evaluation and comprehensive evaluation using these work information to generate a skill evaluation screen, It is possible to make the worker recognize the influence of each work information on the evaluation result when the tightening work of the flange is completed.

(2) Combining the overall tightening results and each work information to perform skill evaluation, it is possible to make the worker understand the elements for which points were deducted and the reasons for them. can be used.

(3) Even an experienced tightening worker can confirm the details of the work and key points, improve the tightening work skills, and improve the reliability of the work.

6 is a flowchart showing an example of skill evaluation processing using work information for flange tightening according to the first embodiment; It is a figure which shows the structural example of a skill evaluation system. It is a figure which shows the structural example of the information processing apparatus which concerns on 2nd Embodiment. It is a figure which shows an example of a reference|standard information table. It is a figure which shows an example of evaluation criteria. It is a figure which shows an example of an axial force skill evaluation table. It is a figure which shows an example of a parallelism skill evaluation table. It is a figure which shows the dispersion|variation distribution of an axial force. It is a figure which shows an example of an axial force variation skill evaluation table. It is a figure which shows an example of a comprehensive evaluation table. It is a figure which shows an example of a skill evaluation screen. It is a figure which shows the transition state of the skill evaluation by replay. It is a figure which shows the structural example of the skill evaluation system which concerns on 3rd Embodiment. It is a figure which shows an example of a reference|standard information table. It is a figure which shows an example of a work procedure information table. FIG. 5 is a diagram showing an example of an axial force at peak and a parallelism skill evaluation table; It is a figure which shows an example of a work time skill evaluation table. It is a figure which shows an example of a setting screen. It is a figure which shows an example of a skill evaluation screen.

[First embodiment]
FIG. 1 shows an example of flange tightening skill evaluation processing according to the first embodiment. The processing content and processing procedure shown in FIG. 1 are examples, and the present invention is not limited to such content. The skill evaluation process shown in FIG. 1 is an example of the skill evaluation method or skill evaluation program of the present invention.
In the skill evaluation process, for example, as shown in FIG. 1, a flange fastening operation (S101) is performed in which a gasket is sandwiched between two opposing flanges and the flange surfaces are fastened by tightening a plurality of bolts and nuts. Information is monitored to generate evaluation information for each skill and an overall evaluation result of fastening skills.
In this tightening work, the work information related to the preset skill is acquired for the fastening work section 4 (FIG. 2) (S102). Further, when the evaluation items for skill evaluation are set (S103), the processing unit 8 (FIG. 2) that executes the evaluation process for the tightening work compares the work information with the reference information (S104), and compares the skill evaluation information. is generated (S105). Further, the processing unit 8 generates a comprehensive evaluation result screen (S106), and also generates a skill evaluation screen combining the comprehensive evaluation result and skill information (S107).

Flange fastening operation (S101): The fastening operation unit 4 has a piping model in which, for example, a gasket is sandwiched between two flanges, and a nut can be tightened on a bolt passing through the flanges. Candidates (operators) undergoing the proficiency evaluation select the set types and numbers of bolts and nuts, install them on the piping model, and use a set tool such as a wrench to tighten the bolts and nuts. I do. In this tightening work, for example, the tightening is performed according to the process according to the pre-selected standard information and set values such as axial force and tightening torque.

Acquisition of work information (S102): The processing unit 8 acquires work information including measured values such as the axial force value indicating the tightening state of the bolt and nut and the distance between the flange faces from the sensor installed in the fastening work unit 4, for example. do. This work information may include, for example, the axial force value acting on the bolt by the tightening work, information on the gap between the flanges, and information on the position and order of the bolts that have been tightened. The processing unit 8 selects at least information to be used for the set skill evaluation items, and may acquire all collectible information regardless of the skill evaluation items.

Setting evaluation items (S103): The processing unit 8 sets evaluation items for the skill related to tightening work. The processing unit 8 stores, for example, JIS, ASME (The American Society of Mechanical Engineers), and other standards stipulated regarding the tightening of flange joints, and other items set based on these standards. there is In setting the evaluation items, at least (1) axial force value of the bolt, (2) dispersion of the axial force value, and (3) parallelism of the flange surface are set. Further, as the evaluation items, either or both of (4) fastening work time and (5) fastening work procedure may be set.

Comparison of work information and reference information (S104): The processing unit 8 compares the work information and the reference information for the set evaluation items, and performs evaluation processing to determine whether or not the tightening work is being performed according to the reference information. . The reference information is an example of a comparison reference associated with the evaluation item, and employs values specified in standards such as JIS and ASME, axial force values set according to the type of gasket, and the like. This reference information may be stored in advance in the storage area of the processing unit 8, may be obtained from an external database (DB) connected to the processing unit, or may be stored in advance in a computer that manages seal construction. It may have been

Generation of skill evaluation information (S105): The processing unit 8 generates skill evaluation information based on the result of comparison between the work information and the reference information. The skill evaluation information is an example of the judgment result of the suitability of the examinee's tightening work against the evaluation criteria stipulated in the standard information, and the evaluation results by adding or subtracting points according to the degree of separation from the value stipulated in the standard information. Adopted. In addition, the skill evaluation information may be, for example, a selective evaluation as to whether or not the criteria are met.

Generation of Comprehensive Evaluation Result (S106): The processing section 8 utilizes the skill evaluation information generated for each evaluation item to generate a comprehensive evaluation result. A comprehensive evaluation result is an example of a work state evaluation result generated by combining skill evaluation information for each evaluation item, for example, and is generated by evaluating whether all the results of the set evaluation items satisfy the criteria. The overall evaluation result may be represented by, for example, a sum of skill evaluations, or a rank represented by numbers, alphabets, or other symbols.

Generation of skill evaluation screen (S107): The processing section 8 generates a skill evaluation screen that combines the generated comprehensive evaluation result and the skill evaluation information for each evaluation item.
The skill evaluation screen may be displayed on the display unit of the processing unit 8, for example, or may be transmitted to a terminal device possessed by the examinee.

FIG. 2 shows a configuration example of a skill evaluation system. The configuration shown in FIG. 2 is an example, and the present invention is not limited to such a configuration.
<Skill evaluation system 2>
This skill evaluation system 2 includes, for example, a fastening work section 4, an information acquisition section 6, and a processing section 8. FIG.
The tightening work section 4 is formed with a piping model in which the examinee 10 performs the work of tightening bolts and nuts. In this piping model, the type and orientation of flanges and gaskets, the direction of arrangement, the tightening direction and number of bolts and nuts, etc. can be set according to the scale of the equipment and equipment to be evaluated.

The information acquisition unit 6 is an example of means for acquiring work information 12 relating to tightening of the flange from the fastening work unit 4 . This information acquisition unit 6 includes, for example, an axial force sensor installed in the fastening work unit 4, a displacement gauge for measuring the gap between flanges, and a measuring device such as a camera for recording the working state of the fastening work unit 4. , are connected to these measuring instruments wirelessly or by wire, and consist of data loggers that collect measured information and images.

The processing unit 8 is composed of a computer, and is an example of means for performing skill evaluation processing on the examinee 10 based on the collected work information 12 and generating an evaluation screen for the test.
The processing unit 8 is connected to the information acquisition unit 6 by wire or wirelessly, and acquires the collected work information 12 at set timing or in real time. The processing unit 8 selects or assigns work information 12 or processes information based on evaluation items 14 set automatically or by an administrator or the like who manages skill evaluation processing. The processing unit 8 has reference information 18 as skill evaluation criteria. The reference information 18 is, for example, information stored in the storage unit of the information processing device 30 (FIG. 3) constituting the processing unit 8, or information read from an external database, and It includes information such as reference values, evaluation details, and purpose of evaluation. The processing unit 8 includes, for example, a skill evaluation information generation function unit 20 , a comprehensive evaluation result generation function unit 22 , and a skill evaluation screen generation function unit 24 .
The skill evaluation information generation function unit 20 is an example of a function unit that generates skill evaluation information by comparing the work information 12 assigned according to the evaluation items 14 with the reference information 18 .
The comprehensive evaluation result generation function unit 22 is an example of a function unit that uses skill evaluation information generated for each evaluation item 14 to generate a comprehensive evaluation result.
The skill evaluation screen generation function unit 24 is an example of a function unit that generates a skill evaluation screen combining the overall evaluation result and the skill evaluation information for each evaluation item.

[Effect of the first embodiment]
According to such a configuration, the following effects are obtained.

(1) By generating a skill evaluation screen that combines the skill evaluation information generated using the work information 12 and the overall evaluation of the fastening work, and presenting it to the examinee, it is possible to determine whether or not the flange tightening work is possible, as well as the skills that are lacking. can be grasped individually, contributing to skill improvement of tightening work.

(2) Even an experienced tightening worker can confirm the details of the work and key points, improve the tightening work skills, and improve the reliability of the work.

[Second embodiment]
FIG. 3 shows a configuration example of an information processing apparatus according to the second embodiment. The configuration shown in FIG. 3 is an example. In FIG. 3, the same reference numerals are given to the same parts as in FIG.
The information processing device 30 is an example of a device that executes skill evaluation processing based on the acquired work information 12, generation of a comprehensive evaluation result, and generation processing of a skill evaluation screen in the skill evaluation system 2. FIG. This information processing device 30 is configured by, for example, a computer, and includes at least a processing section 8 and a storage section 32 . The information processing device 30 includes, for example, an OS (Operating System) that is the base of operation processing, a processor that executes arithmetic processing of a skill evaluation processing program, a memory that is an operation area for these programs, and the like. The processing unit 8 includes an evaluation item setting function unit 34, a skill evaluation function unit 36, and a skill evaluation screen generation function unit 38, for example, by arithmetic processing of a skill evaluation program. The storage unit 32 is configured by a storage medium such as a semiconductor memory or a HDD (Hard Disk Drive), and stores programs to be executed by the information processing device 30, as well as data generated in the skill evaluation process and the work information 12. etc. is stored.

In addition, the information processing device 30 is provided with an information presentation unit 39 that presents information such as the generated skill evaluation screen, the setting of the skill evaluation process, the progress state, and the like. The information presentation unit 39 may be connected to the information processing device 30 by wire, for example, and may be configured by a monitor device that displays an image, or an audio output device that reports audio information, or may communicate with the information processing device 30 by wireless communication. It may be another connected computer or a terminal device used by an examinee or an administrator.

Storage unit 32 stores, for example, an examinee table 40, reference information tables 42 and 44, work information table 46, skill evaluation tables 48, 60 and 80 for each evaluation item, and overall evaluation table 100 as a database for skill evaluation processing. and the generated skill evaluation screen is stored.
The examinee table 40 is an example of a database that stores information about workers who undergo flange fastening skill evaluation. This examinee table 40 stores, for example, the name of the worker who receives the skill evaluation, assigned ID (IDentification) information, date and time information, evaluation item information to be tested, and the like.

<About the reference information table>
The reference information tables 42 and 44 are examples of comparison criteria for skill evaluation processing, and store evaluation reference information for each item executed by the skill evaluation system 2, that is, for each of one or more items that can be set as evaluation items. It is
The reference information table 42 includes, for example, a process section 421 as well as at least three evaluation items: an axial force evaluation section 422, a gap evaluation section 423, and an axial force variation evaluation section 424, as shown in FIG.

The process section 421 stores, for example, process information stipulated by standards relating to tightening of flange joints, or process information set using these stipulations. In the process section 421, for example, a “temporary tightening” process and a “final tightening” process are set as the bolt tightening process, and the bolt and nut tightening process may be divided into multiple times. In addition, the process section 421 may further include a "preparation" process before the "temporary tightening" process, a "re-tightening" process after the "final tightening" process, and the like.

The axial force evaluation unit 422 stores evaluation information on the axial force value acting on the bolt for each tightening process. The axial force evaluation unit 422 stores, for example, the target value of the axial force set for step information such as the number of bolt tightenings, and deduction information corresponding to the range of difference between the detected value and the target value. This demerit point information is an example of information used for generation processing of, for example, skill evaluation information and comprehensive evaluation results.

The gap evaluation part 423 is an example of reference information that defines the gap between the plane portions of the flanges facing each other with the gasket interposed therebetween. The gap evaluation unit 423 stores evaluation criteria information such as deduction point information according to the value and range of the difference between the maximum and minimum distances between the flange surfaces facing each other at one or more locations on the flange surfaces, for example, for each work process. is stored.

The axial force variation evaluation unit 424 stores the difference range between the detected maximum and minimum axial force values for tightening of a plurality of bolts and nuts, and deduction information as evaluation criteria for the values.

In this reference information table 42, at least the three evaluation items of axial force evaluation, gap evaluation, and variation in axial force are set, and other evaluation items may be set.

The reference information table 44 is an example of evaluation criteria for evaluating variations in axial force. For example, as shown in FIG. It is The division of the reference information table 44 is assigned according to the ratio of difference from the reference axial force value, for example, by comparing the reference axial force value set for each work process and the axial force value which is work information. this. The axial force values are classified into categories A, B, . If there is, the categories G, H, and I are set for each difference ratio of 5 [%]. In this reference information table 44, as an example of evaluation, a case where the axial force values obtained from a plurality of bolts are distributed in the same or adjacent two divisions is set as the highest evaluation, for example 10 [points]. Henceforth, deducted evaluation points are set as the range of divisions in which the axial force values are arranged increases. That is, in the evaluation of axial force variation, the narrower the distribution range of the axial force value or the smaller the deviation, the higher the evaluation point.
Further, in the axial force variation evaluation, a method of determining a range in which all of the acquired axial force values are arranged has been described, but the present invention is not limited to this. In such axial force variation evaluation, the highest axial force value and the lowest axial force value may be used, and the difference or deviation between the two values may be used to determine the distribution range.

<About the skill evaluation table>
The skill evaluation table is an example of a processing table that compares work information and reference information. In this embodiment, evaluation items include at least axial force value, variation in axial force, and flange parallelism. Therefore, the skill evaluation table is, for example, an axial force skill evaluation table 48 (FIG. 6), a parallelism skill evaluation table 60 (FIG. 7), and an axial force variation skill evaluation table 80 (FIG. 9) as tables for evaluating each evaluation item. and the case of using a comprehensive evaluation table 100 in which a plurality of evaluation items are summarized.

<Axial force skill evaluation>
In the axial force skill evaluation table 48, for example, as shown in FIG. 6, axial force skill evaluation files 48-1, 48-2, . . . 48-N are generated for each examinee. Each axial force skill evaluation file 48-1, 48-2, .

The identification information section 50 receives information for identifying a person or organization to be evaluated, such as a company or a specific group name, in addition to the name and identification number of the examinee who is the worker who performs the tightening work. The identification information section 50 may be input with the same content as part or all of the information stored in the examinee table 40 (not shown), or may be linked to the information column formed in the examinee table 40 (link). ) may be related.

The process section 52 stores information indicating the work process set as, for example, a tightening work procedure, as information representing the execution timing of the axial force skill evaluation. In this work process, for example, a "setup" process, a "temporary tightening" process, a "final tightening process", a "re-tightening" process, etc. may be set as procedures stipulated in standards such as JIS, or more As detailed process information, processes such as "10% tightening of axial force", "20% tightening of axial force", and so on may be set. This process section 52 may be set with work procedures adopted in the skill evaluation and information adopted as timing for evaluating the axial force in such work procedures.

The target value section 54 stores the target value of the axial force set for the work process. The target value of the axial force is set according to standards and empirical rules, for example, for the size of the flange to be tightened, the type and material of the gasket, the number of bolts, and the like. As for the target value, for example, a target value F11 is set for the initial process A1 of temporary tightening for tightening a flange and a gasket that are fastened with eight bolts. Furthermore, the target value is set to a value F12 that is larger than F11 in the next temporary tightening second step A2.

The measurement unit 56 is an example of a processing unit that stores the acquired work information and executes evaluation processing for target values. The measurement unit 56 is formed with a data storage unit for each bolt to be evaluated. Further, each data storage unit includes a work information unit 561 that stores axial force values as work information, and an evaluation unit 562 that stores evaluation information for each evaluation object. The evaluation section 562 stores, for example, a comparison result between information stored in the work information section 561 and information stored in the target value section 54, evaluation information based on the comparison result, and the like. The data storage unit is associated with, for example, an axial force sensor installed on the bolt in advance, and work information detected by tightening of a specific bolt is input to the associated data storage unit.

The evaluation unit 58 stores the result of the axial force skill evaluation for each work process. This axial force skill evaluation stores, for example, the sum of demerit points stored in the evaluation section 562 of the plurality of bolts 1 to 8, and evaluation results such as the demerit point value derived based on this total value.
Note that the evaluation unit 58 is not limited to storing specific values, and may store evaluation ranks based on symbols or alphabets, for example.
In this axial force skill evaluation, evaluation is performed based on the following processing based on work information stored in the measurement unit 56, for example.
(a) A process of obtaining the difference in the average value of the target axial force (whether the average axial force is within a certain range of the target axial force).
(b) Processing to find the difference between the maximum value and the minimum value (variation in axial force).
(c) Judgment processing of the difference between the target axial force and the maximum value (whether the local axial force exceeds the breaking stress of the gasket).
(d) A process of judging the difference between the target axial force and the minimum value (whether the local axial force falls below the sealing critical stress of the gasket).

<Parallelism skill evaluation>
In the parallelism skill evaluation table 60, for example, as shown in FIG. 7, parallelism skill evaluation files 60-1, 60-2, . . . 60-N are generated for each examinee. Each of the parallelism skill evaluation files 60-1, 60-2, . An evaluation unit 74 is provided.

The identification information section 62 stores the name of the examinee who is the worker who performs the tightening work. The identification information section 62 stores the name registered in the examinee table 40 and the same information as the information stored in the identification information section 50 of the axial force skill evaluation table 48 .

The process section 64 stores information indicating a work process set as a tightening work procedure, for example, as information representing the execution timing of parallelism skill evaluation by measuring the distance between the flange surfaces.
The distance measurement between the flange surfaces may be set so as to be measured only when the final step is completed, for example, in addition to the case where the measurement is performed for each bolt tightening step.

The measurement unit 66 stores measured values between two flange surfaces measured by a plurality of displacement gauges installed on the flange surfaces. Between the flange faces, the number of measurement positions for the distance between the faces is set according to, for example, the diameter of the flange, and each measurement position can be identified in order to specify the distance between the flange faces. It has become. As a result, the measurement unit 66 stores the stored values in the columns in which the measured values from the set measuring devices are respectively set, for example.

The minimum value portion 68 and the maximum value portion 70 store the smallest or largest value among the measured values stored in the measuring portion 66 . In addition, the minimum value portion 68 and the maximum value portion 70 may store, for example, together with the measured value, information capable of specifying the inter-surface position where the measured value is the minimum value or the maximum value.

The difference portion 72 stores, for example, a difference value calculated from the measured values stored in the minimum value portion 68 and the maximum value portion 70 for each work process. The parallelism of the flanges represents the state of inclination of the flanges due to the effects of the flange placement process, manual tightening of the bolts as a preparatory process for tightening, and the bolt tightening work using a tool. In judging the degree of parallelism, for example, it is judged that the flanges are most inclined along the two points where the distance between the faces is the maximum and the minimum.

The evaluation section 74 stores evaluation points X1, X2, X3, . For this evaluation point, for example, a deduction method for evaluation points assigned to parallelism may be adopted.

<Evaluation of variation in axial force>
FIG. 8 shows an example of axial force variation distribution, and FIG. 9 shows an example of an axial force variation skill evaluation table. The configuration shown in FIGS. 8 and 9 is an example.
In the axial force fluctuation evaluation, for example, the state of distribution of the axial force values acting on the plurality of bolts 1 to 8 to be measured is evaluated. The skill evaluation function unit 36 of the processing unit 8 uses a reference information table 44 to evaluate the distribution state of axial force values, as shown in FIG. 8, for example. A reference information table 44 shown in FIG. 8 shows, for example, distribution states of axial force values of examinees Z1, Z2, and Z3. In the axial force variation evaluation, for example, an ideal example is given in which the axial force is distributed within the categories A and G set within a range of ±5 [%] with respect to the reference value of the axial force. In the ideal example, the axial force is distributed within two sections, and an evaluation of 10 points is given as an evaluation example. In addition, since the axial force of examinee Z2 is distributed in the five ranges of division B-division I, for example, a failing evaluation is given as an evaluation point. In addition, examinee Z3 is distributed in two sections E and F, which are separated from the reference value, and is given an evaluation of 10 points for the evaluation of the variation in axial force.

The axial force variation skill evaluation table 80 includes, for example, an identification information section 82, a bolt distribution number section 84, a distribution section section 86, a distribution range section 88, a scoring section 90, and a determination section 92, as shown in FIG.
The identification information section 82 stores the name of the examinee who is the worker who performs the tightening work.
The identification information section 62 stores the name registered in the examinee table 40 and the same information as the information stored in the identification information section 50 of the axial force skill evaluation table 48 .

The bolt distribution number section 84 stores the number of pieces of operation information assigned to each division as a result of division based on the obtained result of comparison between the axial force value acting on each bolt and the reference value. Here, a case is shown in which only the numbers assigned to the bolt distribution number section 84 are stored, but the present invention is not limited to this. The bolt distribution number section 84 may store, for example, the number of divided bolts as well as information specifying which bolt or identification information of a sensor installed on the bolt.

The distribution division section 86 stores range information of divisions assigned according to axial force values.
The distribution range part 88 stores the number of divisions of the assigned axial force.
The scoring unit 90 is an example of evaluation information that evaluates based on reference information set according to the number of distribution ranges, for example.
The judging section 92 stores pass/fail judgment results based on the evaluation points stored in the grading section 90, based on the variation evaluation of the axial force.

<About comprehensive evaluation>
FIG. 10 shows an example of a comprehensive evaluation table. The configuration shown in FIG. 10 is an example.
The skill evaluation function unit 36 generates a skill evaluation result for each of the set evaluation items, and also generates an overall evaluation result by combining these skill evaluation results.
Comprehensive evaluation table 100 is an example of a processing area for generating comprehensive evaluation results based on skill evaluation results for each evaluation item. For example, as shown in FIG. , parallelism evaluation unit 106 , axial force variation evaluation unit 108 , other result unit 110 , total score unit 112 , and evaluation result unit 114 .

The identification information section 102 stores the name of the examinee and the name of the organization, and the same information as the name registered in the examinee table 40 and the information stored in the identification information section 50 of the axial force skill evaluation table 48 is stored. Stored.

The axial force evaluation unit 104, the parallelism evaluation unit 106, the axial force variation evaluation unit 108, and the other results unit 110, for example, evaluate the evaluation results for the set evaluation items, for example, the evaluation unit 58 of the axial force skill evaluation table 48, the parallelism Information stored in the evaluation section 74 of the skill evaluation table 60, the scoring section 90 of the axial force variation skill evaluation table 80, evaluation results for other evaluation items, and the like are stored.

Total score section 112 stores, for example, a total score of the evaluation results stored in each evaluation item, or a score calculated based on predetermined evaluation criteria using the evaluation results for each of these evaluation items.

The evaluation result section 114 is an example of a comprehensive evaluation result, and stores evaluation information set based on the scores stored in the total score section 112 . This evaluation information is represented, for example, by rank display indicating skill level using alphabets, numbers, symbols, etc., and evaluation results such as "pass" or "fail".

<About the skill evaluation screen>
FIG. 11 shows an example of the skill evaluation screen. The evaluation items and screen configuration shown in FIG. 11 are examples.
The skill evaluation screen generation function unit 38 generates the skill evaluation screen 120 using the evaluation results of each evaluation item stored in the comprehensive evaluation table 100 . The skill evaluation screen 120 is an example of an evaluation result screen for each examinee, and includes work information, skill evaluation, and comprehensive evaluation results.
The skill evaluation screen 120 shown in FIG. 11 is composed of, for example, a skill evaluation section 122 displayed using work information, a skill determination section 123, a determination result section 124, a comment section 125, and an operation display section 126. FIG.

The skill evaluation unit 122 is configured by combining, for example, a distribution diagram represented by eight bolt tightening positions and flange face-to-face measurement positions, and work information for each work process. The distribution diagram includes, for example, a regular octagonal diagram aligned with the positions of eight bolts, axial force display portions 132a, 132b, . It includes portions 134a, 134b, 134c and 134d. These display portions 132a, 132b, . Interim values can be displayed. Further, in the distribution diagram, for example, a distribution result 135 of axial force, a reference value 136 of axial force, and a distribution result 137 between flange surfaces are represented by charts. For example, this chart display displays work information when all processes of the tightening work are completed, or work information in the process at the time of completion of the process set by the selection operation or at the time of display operation of the skill evaluation screen 120 . , 132h for the chart display and the axial force, and display portions 134a, 134b, 134a, 134b, 134a, 134b, 134a, 134b, 134a, 134b, 134a, 134b, 134a, 134b, 134a, 134b, 134a, 134b, 134a, 134b The values of 134c and 134d change. In addition, the distribution diagram may also display the values in the previous process or a chart display as comparison information of the axial force value or the flange face-to-face value, for example.

In the axial force value chart display, the figure of the distribution result 135 is distorted with respect to the figure of the axial force reference value 136 because the axial force value does not match the reference value or the axial force varies between bolts. is occurring. In addition, the value of the display portion 134a, which is a part of the distribution result 137 of the flange face-to-face value, has a protruding shape. The resulting so-called uneven tightening state is represented.
Display units 132a, 132b, . may be displayed. Also, display units 132a, 132b, . 60 and a new screen composed of only the measurement results of the work process are displayed. This allows examinees and work managers to check the status of work that did not meet the standard values.

The skill determination unit 123 is an example of a display area for skill evaluation information for each evaluation item. Tightening procedure 1274, time 1275, etc. are set. The evaluation items set here are just an example, and evaluation items that can be evaluated from work information or other work information (not illustrated) may be collected and evaluation items using the work information may be set.
The skill determination unit 123 is provided with a selection unit 128 for selecting evaluation items to be used for comprehensive determination. Selection unit 128 can be operated by, for example, an examinee or an evaluation test supervisor. In this embodiment, as an example, a case is shown in which items of tightening force (axial force) 1271, variation in axial force 1272, and parallelism between flange faces 1273 are selected.
Furthermore, the skill determination unit 123 includes evaluation point display units 1291, 1292, 1293, 1294, and 1295 for each evaluation item. The evaluation point display portions 1291, 1292, 1293, 1294, and 1295 display, for example, the evaluation results evaluated in all processes of the tightening work or in the process completed when the skill evaluation screen 120 was generated. In addition, the evaluation point display units 1291, 1292, 1293, 1294, and 1295 may perform colored display or blinking display as a warning display for items below the lowest reference point, for example.

The determination result section 124 is an example of a display area for the determination result determined in the comprehensive evaluation process, and may be linked to the evaluation information stored in the evaluation result section 114 of the comprehensive evaluation table 100, for example. In the comprehensive evaluation process, the skill evaluation results of the evaluation items selected by the selection unit 128 are used. In this determination result section 124, for example, "Best", "Better", and "Good" are displayed as evaluation display examples that have reached the acceptance criteria, and "Retry" and "Brush Up" are displayed as examples of evaluation display that have not passed, and others. , numbers and symbols may be displayed.

The comment section 125 is an example of a display section for allowing the examinee to recognize information such as advice and evaluation points generated based on the judgment result, and is automatically generated by the processing section 8 of the information processing apparatus 30. , the skill evaluation supervisor, etc. may input. The comment section 125 may display, for example, information automatically generated according to the format stored in the storage section 32 for evaluation items that do not meet the acceptance criteria. In the comment section 125, for example, when the axial force is insufficient, advice is displayed on where the tightening force is insufficient and how to get a sense of the appropriate tightening force. Further, in the comment section 125, for example, when the difference between the flange surfaces is large, the fact that the inclination has occurred, the location of the inclination, and advice information for tightening preparation are displayed.

The operation display unit 126 is an example of display of operation items on the skill evaluation screen, and displays items such as sub-screens, reports, and menus, for example.
The sub-screen is, for example, a movement operation section to display screens such as work information for each evaluation item, its chart display screen, and transition state diagram.
The report is a functional unit that reports the final result of tightening, and executes, for example, image file output, printout execution processing, tightening history database processing, and the like.
The menu is an operation unit for moving to, for example, an initial screen for skill evaluation processing, a setting screen for evaluation items, or the like.

In addition, the skill evaluation screen 120 may further display information such as the value of the maximum difference between the distances between the flange faces and the evaluation points related to the tightening axial force value.

<About the function example of the skill evaluation screen>
FIG. 12 shows a display example of a transition state of skill evaluation by replay. The configuration, display contents, and display method of the display screen shown in FIG. 12 are examples.
The processing unit 8 connects to a skill evaluation table for each evaluation item, for example, in response to a selection operation on the display units 132a, 132b, . In addition to displaying work information for each work process as shown in FIG. The skill evaluation screen generation function unit 38 generates, for example, a reproduction screen 140A (A in FIG. 12) showing a state in the middle of a work process, and a work completion screen 140B (B in FIG. 12) showing a state in which the work process is completed by final tightening. do. From the playback screen 140A to the work completion screen 140B, for example, a plurality of screens including the acquired work information and skill evaluation results may be generated at set time intervals until the tightening work is completed. An image may be generated at the timing when acquisition or skill evaluation is generated, and these images may be displayed continuously along the passage of time. Alternatively, the skill evaluation screen generation function unit 38 may display the playback screen 140A from work start to completion as a real-time moving image.

The playback screen 140A is provided with, for example, a timing display section 142 that indicates the evaluation timing of the displayed skill evaluation, and when the viewer selects and operates the timing display section 142, the skill evaluation results in the previous and subsequent work processes are displayed. be done. The playback screen 140A has at least the same display items as the skill evaluation screen 120, including polygonal charts corresponding to the number of bolts to be tightened, display sections 132a-1 and 132b-1 displaying axial force detection values, . . , and display portions 134a-1, 134b-1, . Further, the playback screen 140A is provided with an operation unit 144 for performing progress processing of the display content, stop processing of the progress, repeat progress processing, and the like.
In the reproduction screen 140A, for example, by advancing the time, the display results of the display units 132a-1, 132b-1, . . . and the display units 134a-1, 134b-1, . Along with this transition, the number and size of lines in the chart figure increase. In the chart figure, for example, at the timing of starting work, the axial force value is displayed by tightening. At this time, the target axial force and the detected axial force value are displayed small. Also, in the chart figure, as the work process progresses and the number of tightening laps increases, the axial force value increases, and the distribution figure expands accordingly.
In addition, on the playback screen 140A, playback screens are displayed for the display units 132a-1, 132b-1, . The color of the frame may be changed or blinked when the target condition of the work process of the time is not met.

The work completion screen 140B displays the axial force values when the final tightening is completed in the display portions 132a-2, 132b-2, . is displayed. At this time, the detected axial force value coincides with the target axial force or reaches the vicinity of the target axial force on the chart. In other words, the distribution pattern of the axial force values has a shape that matches or resembles the target axial force, thereby obtaining the necessary or ideal sealing state.

It should be noted that the processing unit 8 can also generate, for example, the transition of the flange face-to-face value in addition to the axial force value for the transition state of the skill evaluation by replay.

<About skill evaluation process>
The skill evaluation processing executed by the information processing device 30 includes, for example, work information acquisition processing (S201), skill evaluation evaluation item setting processing (S202), and skill evaluation for the set skill evaluation. Readout processing of corresponding reference information (S203), comparison processing between work information and reference information (S204), skill evaluation information generation processing (S205), comprehensive evaluation result screen generation processing (S206), comprehensive evaluation result and skill It includes a process of generating a skill evaluation screen combining information (S207).

[Effect of Second Embodiment]
According to such a configuration, the following effects are obtained.

(1) An effect similar to that of the first embodiment can be obtained.

(2) By combining and displaying the evaluation results for the overall tightening work, as well as individual skill evaluations for each work process and items to be evaluated, it is possible for the examinee to understand the work conditions and their effects, and to Work techniques can be learned.

(3) It is possible to analyze and grasp in detail whether or not work can be performed according to the standard information grasped as knowledge.

[Third embodiment]
FIG. 13 shows a configuration example of a skill evaluation system according to the third embodiment. The configuration shown in FIG. 13 is an example, and the present invention is not limited to such a configuration.
<Skill evaluation system 150>
This skill evaluation system 150 includes, for example, a fastening work section 152, an inter-face distance measurement section 154, an axial force measurement section 156, an information processing device 30, and an information presentation section 39, as shown in FIG.

The fastening work part 152 is provided with a connection flange 160 at a connecting portion of two pipes arranged along the vertical direction, for example. This fastening work unit 152 may use, for example, piping equipment that is used in a plant or the like, or may use a training device created by simulating such piping equipment. Flanges 160-1 and 160-2 provided at the tip of each pipe have nuts 164 attached to a plurality of bolts 162 passed through the periphery at regular intervals. 162h and nuts 164a, 164b, . . . , 164h are installed on the flange 160, for example. 162h and nuts 164a, 164b, . . . 164h are tightened using a tool 166. . As a result, the gasket is in a state of pressure contact between the flanges 160-1 and 160-2, thereby exhibiting a sealing function for the connecting portions of the pipes. The tool 166 includes, for example, a manual wrench, a torque wrench, a nut runner, a tool having a tightening axial force measuring function, and the like.

Tools other than manual wrenches may be capable of transmitting and receiving information on measured values and set values to and from the axial force measuring unit 156 of the information acquisition unit 6 and the information processing device 30, for example.
Further, as shown in FIG. 13, the fastening work part 152 has a configuration in which the flange surfaces face each other in the horizontal direction, and a nut 164 is rotated in a horizontal direction or a nearly horizontal direction to tighten a bolt 162 which penetrates in the vertical direction. Alternatively, the flange surfaces may face each other in the vertical direction, and the nut 164 may be rotated in the vertical or near vertical direction to tighten the bolt 162 that passes through.

Some or all of the bolts 162 installed on the flange 160 are equipped with sensors 168a, 168b, . . . , 168h for detecting axial force. The axial force detected by each sensor 168a, 168b, .

<About the measurement of the face-to-face distance of the flange>
In the skill evaluation system 150, the axial force acting by tightening the bolt and nut is detected, and the face-to-face distance between the flanges is measured as construction information for the flange tightening process. The inter-surface distance D is measured by the inter-surface distance measuring section 154, for example, as shown in FIG. The face-to-face distance measurement unit 154 is an example of the information acquisition unit 6, and measures the face-to-face distance using data measured by the displacement sensors 170a, 170b, . Displacement sensors 170a, 170b, . there is In the measurement of the face-to-face distance of the flanges, the displacement is measured by expanding and contracting the measuring portion as the gap between the flanges increases or decreases, for example, according to tightening of the bolts. In addition, the displacement meter may measure the distance by irradiating the measurement surface with laser light and receiving the reflected light. A plurality of displacement sensors 170a, 170b, . good. At least one or two or more bolts and nuts are interposed between the displacement sensors 170a, 170b, . . . set the number to be installed.

<About the information processing device>
The information processing device 30 includes, for example, a timer in addition to the processing unit 8 and the storage unit 32 .
This timekeeping means is an example of means for acquiring time information such as elapsed time, and acquires time information using a timer or a timekeeping program executed by the processing section 8 .

In this embodiment, skill evaluation processing is performed based on evaluation items including work time and work process in addition to at least three evaluation items of axial force, flange parallelism, and variation in axial force shown in the second embodiment. I do.

<About the reference information table>
FIG. 14 shows an example of the reference information table 180. As shown in FIG.
This reference information table 180 specifies the reference information for the evaluation items added in the third embodiment. Therefore, the reference information table 180 may be used in combination with the reference information tables 42 and 44 according to the set evaluation items.
This reference information table 180 includes, for example, a time evaluation section 182, a procedure 1 evaluation section 184, and a procedure 2 evaluation section 186, as shown in FIG. Each evaluation unit stores reference information in association with work process information.

The time evaluation unit 182 stores the work elapsed time until the set work process is completed and reference information for evaluation thereof. For the set work process, for example, the work time for each "temporary tightening" process, the "final tightening" process, or a work time in which these are combined is set.

The procedure 1 evaluation section 184 is an example of reference information relating to the evaluation of the work procedure, and stores information such as the number of bolts installed on the flange, their tightening order and tightening means, and their evaluation criteria. For example, as shown in FIG. 15, the procedure 1 evaluation unit 184 stores work procedure information tables 190A and 190B, or can read reference information from the work procedure information tables 190A and 190B stored in another storage area. linked to. The work procedure information table 190A stores work procedure information set based on information defined in the JIS standard, for example, as shown in FIG. 15A. Also, the work procedure information table 190B stores work procedure information set based on information defined in the ASME standard, as shown in FIG. 15B, for example.

The work procedure information tables 190A and 190B include, for example, process sections 192A and 192B, bolt number sections 194A and 194B, tightening procedure sections 196A and 196B, and purpose sections 198A and 198B.
The process sections 192A and 192B are processes from flange mounting to bolt tightening, and store processes for evaluating the work procedure.
The bolt number sections 194A and 194B store information such as the number and positions of bolts to be subjected to skill evaluation processing among the number of bolts set according to the inner diameters of gaskets and flanges.

The tightening procedure sections 196A and 196B store information such as tightening means and order of tightening.
The objective sections 198A and 198B are examples of explanatory information relating to, for example, tightening procedures, and store information that should be understood by workers in skill evaluation.

<Work procedure skill evaluation>
In the work procedure skill evaluation process, for example, the order of bolt tightening operations is evaluated. Positions P1, P2, . In the tightening process of the flanges 160 (160-1, 160-2), so-called diagonal tightening is used in the temporary tightening and final tightening processes. The tightening order of this diagonal tightening is P1->P5->P3->P7->P2->P6->P4->P8, where P1 is the start of tightening, and P8 is the end point of tightening. In the work procedure skill evaluation process, the order of changes in the axial force values measured by the sensors 168a, 168b, .

The procedure 2 evaluation unit 186 stores reference information regarding the maximum value of the axial force (axial force peak value) acting on the bolt immediately after tightening. The axial force value acting on the bolt becomes maximum immediately after it is tightened by the tool. In the flange tightening process, a plurality of tools are tightened according to a set order in one process. A so-called elastic interaction occurs in the flange, for example, when one bolt is tightened, the tightening force acts on the other bolts. That is, when the bolt a is tightened, the bolt a side of the flange is displaced downward, and then when the other bolt d is tightened, the flange is displaced toward the bolt d side. At this time, the axial force of the flange on the bolt a side decreases due to the displacement toward the bolt d side. By tightening all the bolts according to a predetermined procedure, the flange is completely tightened with a specified axial force and in a parallel or nearly parallel state.
In the evaluation of procedure 2, the evaluation processing regarding the axial force immediately after tightening is performed. In step 2, the work information obtained from the displacement gauge installed on the flange may be used to evaluate the peak axial force at the time of tightening and the distance between the flange surfaces at that time.

In addition to these three evaluation items, other evaluation items may be set in this reference information table 180 .

<Work procedure skill evaluation>
FIG. 16 shows an example of a skill evaluation table for axial force and parallelism.
In this axial force and parallelism skill evaluation table 200, skill evaluation files 200-1, 200-2, . . . 200-N are generated for each examinee. The axial force and parallelism skill evaluation table 200 stores the axial force peak value for each bolt work process and the flange parallelism at that time. Axial force peak value and flange parallelism for each work process are examples of work procedure skill evaluation. The axial force and parallelism skill evaluation table 200 includes, for example, an identification information section 202, a process section 204, an axial force section 206, an inter-surface measurement section 208, a total score section 210, and a determination result section 212, as shown in FIG. included.

The identification information section 202 receives information for identifying a person or organization to be evaluated, such as a company or a specific group name, in addition to the name and identification number of the examinee who is the worker who performs the tightening work.

The process section 204 stores, for example, information indicating a work process set as a work procedure for tightening as information representing the execution timing of the axial force skill evaluation at the time of completion of tightening. This process section 204 may be set with work procedures adopted in skill evaluation and information adopted as timings for evaluating axial force and parallelism in such work procedures.

The axial force section 206 is a processing area for evaluating the axial force for each work process, and includes a target value section 2061 , a measurement result section 2062 and an evaluation section 2063 .

The target value portion 2061 stores the target value of the axial force set for each work process. This target value of the axial force is set, for example, to a value different from the target value of the axial force evaluation at the time of completion of the work process in the second embodiment.

The measurement result part 2062 stores the axial force value of the bolt immediately after tightening, which is acquired before the bolt in the next work order is tightened. The axial force measurement unit 156, for example, always collects detection data from the sensors 168a, 168b, . may be extracted and transmitted to the information processing device 30 .

The evaluation unit 2063 compares the maximum value of the axial force stored in the measurement result unit 2062 and the target value stored in the target value unit 2061, and stores the evaluation result based on the comparison result. The evaluation of the axial force is performed, for example, by determining whether there is a bolt whose difference value between the axial force value stored in the measurement result section 2062 and the target value is greater than or equal to a predetermined range, and furthermore, depending on the number of bolts that are greater than or equal to the predetermined range. deduction points are set.

In the axial force portion 206, for example, the display portion of the bolt determined to be deducted by comparing the axial force value and the target value may be displayed by color coding or blinking. This allows the examinee to recognize which bolt tightening operation does not satisfy the regulations.

The face-to-face measurement unit 208 is a processing area for evaluating the flange face-to-face value when tightening is completed, and includes a measurement result portion 2081 and a difference portion 2082 .
The measurement result section 2081 stores measurement values between the flange surfaces obtained from the displacement sensors 170a, 170b, . The face-to-face value of the flange changes as the tightening of the multiple bolts progresses.

The difference portion 2082 stores a difference value between the maximum value and the minimum value of the measurement values stored in the measurement result portion 2081, for example, for each work process.

The total score section 210 stores the evaluation results calculated by the axial force and parallelism skill evaluation processing for each work process.

The judgment result section 212 uses the evaluation results stored in the total score section 210 to store pass/fail judgment results based on the evaluation of axial force variation and flange parallelism.

<Evaluation of work time>
FIG. 17 shows an example of the work time skill evaluation table.
The work time skill evaluation table 220 is an example of a processing area for evaluating the work time required for the set work process. The work time skill evaluation table 220 includes, for example, an identification information section 221, a reference information section 222, a limit reference information section 223, a measured value section 224, and an evaluation section 225. FIG.

The identification information section 221 stores information that identifies the examinee of the skill evaluation.

The reference information part 222 is an example of reference information of work time. This reference information may be set uniformly based on, for example, the average value of past working hours, or for each examinee according to conditions such as the examinee's experience value or skill evaluation rank (not shown) You can change it.
The limit reference information part 223 is another example of reference information of work time, and stores the maximum time of tightening work. For this reference information, a limit time may be set according to conditions such as the number of bolts to be installed on the flange.

The measured value section 224 stores information on the elapsed time from the start to the end of the designated work process.
The evaluation unit 225 performs skill evaluation by combining the work time stored in the measured value unit 224, the information stored in the reference information unit 222, and the limit reference information unit 223. FIG.

<Comprehensive evaluation>
FIG. 18 shows an example of the setting screen. The display items, numerical values, and arrangement configuration shown in FIG. 18 are examples.
The setting screen 230 is an example of a settable display screen that displays point allotment conditions, reference information, work processes, and the like for skill evaluation processing and comprehensive evaluation processing. For example, as shown in FIG. 18, the setting screen 230 includes an axial force setting section 232, a parallelism setting section 234, a work time setting section 236, and a work process setting section 238 as setting conditions for each evaluation item.

The axial force setting unit 232 is an example of evaluation conditions for axial force skill evaluation. Deduction conditions for comparison results with values are stored.

The parallelism setting unit 234 is an example of evaluation conditions for parallelism skill evaluation. The subtraction value conditions, etc. are stored.

The work time setting section 236 is an example of evaluation conditions for work time skill evaluation, and stores point allotment conditions, reference value conditions, limit time conditions, deduction conditions for overtime, and the like.

The work process setting section 238 stores conditions such as an achievement rate for each work process such as "temporary tightening" and "final tightening".

<About the skill evaluation screen>
FIG. 19 shows an example of the skill evaluation screen. The evaluation items and screen configuration shown in FIG. 19 are examples. In FIG. 19, the same reference numerals are given to the same parts as in FIG.
The determination result screen 240 is an example of a skill evaluation screen for each examinee. For example, as shown in FIG. It is composed of an axial force result portion 250 at the time of tightening completion, an interplanar transition portion 252 and a tightening time interplanar value portion 254 .

This skill evaluation screen 120 displays skill evaluation results for five evaluation items by selecting a tightening procedure and time selection section 128. For example, axial force value, flange face-to-face value, measurement position and measurement A polygonal distribution map representing numbers is displayed, and a work time display section 246 is included.

The identification information section 242 receives information for identifying a person or organization to be evaluated, such as the name and identification number of the examinee who is the worker who performs the tightening work, as well as the name of a company or a specific group. The information displayed in the identification information section 242 is used as information for identifying the examinee and as information associated with the skill evaluation table for each set evaluation item.

The test result section 244 is an example of the overall evaluation result of the skill evaluation process, and displays evaluation information such as a total score as well as information such as the date and time of the test and the type of gasket.

The axial force transition section 248 is an example of the result information of the axial force skill evaluation and the work procedure skill evaluation, and displays the transition state of the axial force detection value for each bolt in a graph. In this axial force transition portion 248, for example, the axial force value increases greatly immediately after the bolt is tightened, and after that, as time passes and other bolts are tightened, the tightened state is stabilized and the elastic interaction causes the axial force to increase. It is shown that the force value decreases at a predetermined rate and then becomes a stable value.

A maximum axial force value at the time of completion of tightening is displayed in the axial force result portion 250 at the time of completion of tightening. The axial force result section 250 at the time of tightening is linked to the axial force and parallelism skill evaluation table 200, and the axial force value stored in the axial force section 206 is displayed according to the selected work process. be done. The axial force result portion 250 at the time of tightening completion is associated with, for example, the axial force transition portion 248, and the color of the portion corresponding to the axial force transition portion 248 is changed by selecting the maximum value or the minimum value. or flashing to make it distinguishable.

The face-to-face transition portion 252 is an example of result information of the parallelism skill evaluation and the work procedure skill evaluation, and graphically displays the transition state of the flange face-to-face value detected for each displacement sensor. In this face-to-face transition portion 252, for example, when the face-to-face value decreases significantly immediately after tightening, the value of the flange face-to-face value stabilizes as time passes and other bolts are tightened. It is shown.

The tightening time interval value portion 254 displays the interval value at the time of completion of tightening. The tightening time interval value portion 254 is linked to the axial force and parallelism skill evaluation table 200, and is the flange interval value stored in the axial force portion 206 such as the measurement result portion 2081 at the time of completion of tightening. value is displayed.

[Effect of the third embodiment]
According to such a configuration, the following effects are obtained.

(1) Effects similar to those of the first and second embodiments can be obtained.

(2) By distributing and displaying the evaluation results among the set evaluation items, it is possible to make the examinee understand the skills and experience points that are lacking.

(3) It is possible to improve the skill acquisition effect for tightening work by displaying comments on points where sufficient evaluation results were not obtained for evaluation items and work processes.

[Modification]
Modifications of the embodiment described above are listed below.

In the above-described embodiment, regarding the skill evaluation of the work procedure, the tightening order determination process is performed based on the order detected by the axial force sensor, but the skill evaluation process of the present invention is not limited to such a method. In the work procedure skill evaluation, for example, an examinee's motion information may be acquired as a work procedure and evaluated. For this movement information, for example, in addition to collecting the movement of the examinee himself/herself, a camera or the like installed in goggles worn by the examinee may be used. The camera installed in the goggles may be, for example, a so-called smart glass that has a built-in computer that has a function of capturing the line of sight and the direction in which the examinee faces during the tightening work. Accordingly, in the skill evaluation system 150, the goggles and the information processing device 30 may transmit and receive image information through communication. Further, the skill evaluation system 150 collects the tightening timing information of each bolt 162 and nut 164 in the work process, so that the construction information and the operation information acquired by the sensor 168 may be associated and grasped as a work procedure. .
In addition, the skill evaluation system 150 may acquire work information by capturing images including the examinee's movements and contact positions, for example, using a camera placed in the work area where the tightening work is performed.

As described above, the most preferable embodiment and the like of the present invention have been described. The invention is not limited to the above description. Various modifications and changes are possible for those skilled in the art based on the gist of the invention described in the claims or disclosed in the detailed description. It goes without saying that such modifications and changes are included in the scope of the present invention.

According to the present invention, for the evaluation items set as the targets of skill evaluation, each skill evaluation and a skill evaluation screen including the overall evaluation result by combining these are generated and shown to the examinee. It is useful because it can deepen the recognition of and improve the skill acquisition effect.

2, 150 skill evaluation system 4, 152 fastening work unit 6 information acquisition unit 8 processing unit 10 examinee 12 work information 14 evaluation item 18 reference information 20 skill evaluation information generation function unit 22 comprehensive evaluation result generation function unit 24 skill evaluation Screen generation function unit 30 Information processing device 32 Storage unit 34 Evaluation item setting function unit 36 Skill evaluation function unit 38 Skill evaluation screen generation function unit 39 Information presentation unit 40 Examinee table 42, 44, 180 Reference information table 421, 52 , 64, 192A, 192B, 204 process units 422, 104 axial force evaluation unit 423 gap evaluation unit 424 axial force variation evaluation unit 46 work information table 48 axial force skill evaluation table 48-1, 48-2, . -N axial force skill evaluation file 50, 62, 82, 102, 202, 221 identification information section 54, 2061 target value section 56, 66 measurement section 561 work information section 562, 58, 74, 2063, 225 evaluation section 60 parallelism Skill evaluation table 60-1, 60-2, ... 60-N Parallelism skill evaluation file 68 Minimum value part 70 Maximum value part 72, 2082 Difference part 80 Axial force variation skill evaluation table 84 Bolt distribution number part 86 Distribution division Part 88 Distribution range part 90 Scoring part 92 Judgment part 100 Comprehensive evaluation table 106 Parallelism evaluation part 108 Axial force variation evaluation part 110 Other results part 112, 210 Overall score part 114 Evaluation result part 120 Skill evaluation screen 122 Skill evaluation part 124 Judgment Result part 125 Comment part 126 Operation display part 1271 Tightening force (axial force)
1272 Variation in axial force 1273 Parallelism between flange surfaces 1274 Tightening procedure 1275 Time 128 Selection section 1291, 1292, 1293, 1294, 1295 Evaluation point display section 132, 132a, 132b, ..., 132h, 132a-1, 132b- 1, . . . , 132h-1, 132a-2, 132b-2, . , 134a-2, 134b-2, 134c-2, 134d-2 Display section 135 Axial force distribution result 136 Axial force reference value 137 Distribution result between flange surfaces 140A Playback screen 140B Work completion screen 142 Timing display section 144 Operation section 154 face-to-face distance measuring part 156 axial force measuring part 160, 160-1, 160-2 flange 162, 162a, 162b, ... 162h bolt 164, 164a, 164b, ... 164h nut 166 tool 168, 168a, 168b, . 198A, 198B objective section 200 skill evaluation table of axial force and parallelism 206 axial force section 2062, 2081 measurement result section 208 interplanar measurement section 212 determination result section 220 work time skill evaluation table 222 reference information section 223 limit reference information section 224 Measurement value section 230 Setting screen 232 Axial force setting section 234 Parallelism setting section 236 Work time setting section 238 Work process setting section 240 Judgment result screen 242 Identification information section 244 Test result section 246 Work time display section 248 Axial force transition section 250 Tightening Axial Force Result at Completion Section 252 Interplanar Transition Section 254 Tightening Time Interplanar Value Section

Claims (10)

A skill evaluation system for evaluating the fastening skill of a flange sandwiching a gasket,
A fastening work part in which the gasket is sandwiched between the flanges, and which tightens the bolt and nut to perform the fastening work of the flange;
information acquiring means for acquiring work information including at least the axial force applied from the bolt to the flange and the inter-face distances at a plurality of locations on the facing flange surfaces;
at least,
(1) Axial force value of bolt
(2) Variation of axial force value
(3) Set evaluation items for the parallelism of the flange surface, generate skill evaluation information by comparing the work information and reference information for each evaluation item, and use these skill evaluation information to determine fastening skills. a processing unit that generates a comprehensive evaluation result and generates a skill evaluation screen that includes the skill evaluation and the comprehensive evaluation result;
A skill evaluation system characterized by comprising: The information acquisition means acquires the work information including work time information of the fastening work and fastening position information of the bolt,
The processing unit further
(4) Fastening time
(5) setting either one or both of the evaluation items of the fastening work procedure, generating the skill evaluation information based on the results of comparison between the set evaluation items and the reference information corresponding to the evaluation items, and 2. The skill evaluation system according to claim 1, wherein the skill evaluation information is used to generate the comprehensive evaluation result. The processing unit sets classification information set according to a difference value of the detected axial force value with respect to the reference information for each bolt, and generates the skill evaluation information based on the distribution range of the classification information. 3. The skill evaluation system according to claim 1 or 2, characterized by: The processing unit generates advice information for the skill evaluation for each evaluation item, and displays the advice information within the skill evaluation screen or on another screen associated with the skill evaluation screen. The skill evaluation system according to any one of claims 1 to 3. A skill evaluation program for computer implementation,
A function of acquiring work information including the axial force applied from the bolt to the flange by tightening the bolt and nut and fastening the flange, and the distance between the faces of the opposing flange surfaces at multiple locations;
at least,
(1) Axial force value of bolt
(2) Variation of axial force value,
(3) a function of setting evaluation items for the parallelism of the flange surface and generating skill evaluation information by comparing the work information and the reference information for each evaluation item;
A function to generate a comprehensive evaluation result of the fastening skill using this skill evaluation information,
A function of generating a skill evaluation screen including the skill evaluation and the overall evaluation result;
A skill evaluation program characterized by causing the computer to execute. a function of acquiring the work information including the work time information of the fastening work and the fastening position information of the bolt from the information acquisition means;
moreover,
(4) Working hours
(5) a function to set one or both of the work procedure evaluation items;
A function of generating the skill evaluation information based on a comparison result between the set evaluation item and the reference information corresponding to the evaluation item;
A function of generating the comprehensive evaluation result using the skill evaluation information;
6. The skill evaluation program according to claim 5, comprising: A function of setting classification information set according to a difference value of the detected axial force value with respect to the reference information for each of the bolts, and generating the skill evaluation information based on the distribution range of the classification information. 7. The skill evaluation program according to claim 5 or 6, characterized by: 5. A function of generating advice information for said skill evaluation for each of said evaluation items and displaying said advice information within said skill evaluation screen or on another screen associated with said skill evaluation screen. The skill evaluation program according to any one of claims 1 to 7. A skill evaluation method for evaluating the fastening skill of a flange sandwiching a gasket,
a step of acquiring work information including an axial force applied from the bolt to the flange by tightening the bolt and the nut to fasten the flange and an inter-face distance at a plurality of locations of the opposing flange surfaces;
at least,
(1) Axial force value of bolt
(2) Variation of axial force value,
(3) setting an evaluation item for the parallelism of the flange surface, and comparing the work information and the reference information for each evaluation item to generate skill evaluation information;
a step of generating a comprehensive evaluation result of the fastening skill using the skill evaluation information;
generating a skill evaluation screen including the skill evaluation and the overall evaluation result;
A skill evaluation method, comprising: an information acquisition unit that acquires work information including the axial force applied to the flange from the bolt and the distance between the faces of the flange faces at a plurality of locations;
at least,
(1) Axial force value of bolt
(2) Variation of axial force value,
(3) Set evaluation items for the parallelism of the flange surface, generate skill evaluation information by comparing the work information and reference information for each evaluation item, and use these skill evaluation information to determine fastening skills. a control unit that generates a comprehensive evaluation result and generates a skill evaluation screen that includes the skill evaluation and the comprehensive evaluation result;
A skill evaluation device comprising:

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