CN109414807B - Flange fastening management method, flange fastening management system, flange fastening management device, and recording medium - Google Patents

Abstract

The present invention manages the flange in a unified manner by selecting a gasket and a fastening condition in association with the flange, and can realize highly reliable flange fastening management and reduce the burden on the operator. According to the present invention, a fastening tool (4) is used together with a computer controller (6) in a flange fastening management method, the fastening tool (4) fastening between flanges sandwiching a gasket (14) with a plurality of bolts and nuts, the flange fastening management method comprising: a step of acquiring fastening condition information associated with the flange (12); acquiring gasket information matched with the flange; a step of comparing the gasket information with gasket information obtained from the gasket to determine whether or not the gasket is fitted to the flange; and applying a fastening torque to the bolt or the nut by the fastening tool according to a fastening condition obtained from the fastening condition information if the selected gasket is matched with the flange.

Description

Flange fastening management method, flange fastening management system, flange fastening management device, and recording medium

Technical Field

The present invention relates to a technique for managing fastening of flanges for connecting pipes, valves, pumps, and the like.

Background

A flange joint is used for pipe connection and connection of a pump or the like to a pipe. Gaskets are interposed between the flanges of the flange joints, and the flanges are fastened by bolts and nuts arranged at a plurality of positions. In this fastening, an electric screw tightening tool may be used in addition to a hand tool such as a torque wrench.

As such a screw tightening tool, there is known a screw tightening tool which uses an electric motor as a rotation drive source, intermittently applies a current pulse to the motor, controls a current value based on a detected torque, and stops the current pulse when a target torque is reached (for example, patent document 1).

Prior art documents

Patent document

Patent document 1: japanese laid-open patent publication No. 2002-

Disclosure of Invention

Problems to be solved by the invention

Further, the use of such a fastening tool has an advantage that uniform and uniform fastening can be performed even when the operator is different, and the work efficiency can be improved.

However, the flange and the gasket to be subjected to the treatment are various, and it is indispensable to select a gasket that matches the flange. Further, the fastening steps of the plurality of bolts are not uniform, and even when a fastening tool is used, it is preferable to perform fastening with high reliability by a skilled operator, and training and experience are required for skilled operation, so that the burden on the operator is excessive, and flange fastening management is extremely important.

In view of the above problems, an object of the present invention is to provide a flange fastening device that can collectively manage a flange from selection to implementation of a gasket and fastening conditions, and that can reduce the burden on the operator while achieving highly reliable flange fastening management.

Means for solving the problems

In order to achieve the above object, according to one aspect of a flange tightening management method of the present invention, in which a tightening tool that sandwiches a gasket between flanges and tightens with a plurality of bolts and nuts is used together with a computer, the flange tightening management method includes: acquiring fastening condition information associated with the flange; acquiring gasket information matched with the flange; a step of comparing the gasket information with gasket information obtained from the gasket to determine whether or not the gasket and the flange are matched; and applying a fastening torque to the bolt or the nut with the fastening tool according to a fastening condition obtained from the fastening condition information if the selected gasket is matched with the flange.

The flange fastening management method further includes: acquiring the fastening torque applied to the bolt or the nut from the fastening tool, and evaluating whether or not the fastening condition matches the fastening condition; and presenting fastening result information including at least the fastening condition and the evaluation result in association with the flange.

In order to achieve the above object, according to one aspect of a flange tightening management method of the present invention, in which a tightening tool that sandwiches a gasket between flanges and tightens with a plurality of bolts and nuts is used together with a computer, the flange tightening management method includes: acquiring fastening condition information associated with the flange; a step of acquiring flange information including gasket information matching the flange from the flange label; a step of acquiring gasket information from the gasket or the gasket label; a step of comparing the gasket information included in the flange information with the gasket information obtained from the gasket or the gasket label; selecting a fastening condition from the fastening condition information if the gasket is matched with the flange; a step of acquiring a fastening torque applied to the nut from the fastening tool and evaluating whether or not the fastening of the flange matches the fastening condition; and presenting fastening result information including at least the fastening condition and the evaluation result in association with the information.

The flange fastening management method further includes a step of outputting a prompt message indicating whether or not the gasket is fitted to the flange.

The flange fastening management method further includes: determining whether or not the fastening condition is satisfied during fastening of the flange; and presenting the result of the determination.

The flange fastening management method further includes: a step of acquiring worker information from a worker tag; and presenting the flange information, the fastening condition, and the evaluation result in association with the worker information.

In the above flange tightening management method, the flange information contains at least information indicating a gasket that matches the flange and showing the tightening step.

In the flange fastening management method, the fastening condition information may include the flange information and the gasket information.

The flange fastening management method may further include: a step of forming the gasket material into a gasket; and a step of attaching the gasket label including the gasket information to the gasket.

In order to achieve the above object, according to one aspect of the flange fastening management system of the present invention, it has: a fastening tool that fastens a plurality of bolts and nuts installed so that the gasket is sandwiched between the flanges; a controller that controls a fastening action of the fastening tool; and a server connected to the controller in a wired or wireless manner, wherein the controller performs: the method includes the steps of obtaining fastening condition information associated with a flange from a server, obtaining flange information including gasket information matching the flange from a flange tag, obtaining gasket information from a gasket or a gasket tag, comparing the gasket information included in the flange information with the gasket information obtained from the gasket or the gasket tag, selecting a fastening condition from the fastening condition information if the gasket is matched with the flange, obtaining a fastening torque applied to the nut from the fastening tool, evaluating whether the fastening of the flange is matched with the fastening condition, and providing fastening result information including at least the fastening condition and the evaluation result to the server in association with the flange.

In order to achieve the above object, according to one aspect of the recording medium of the present invention, which records a flange tightening management program, a computer is used for controlling a tightening tool that sandwiches a gasket between flanges and tightens the gasket with a plurality of bolts and nuts, the program is for causing the computer to realize the control, and the program causes the computer to realize functions of: the method includes acquiring fastening condition information associated with a flange, acquiring flange information including gasket information matching the flange from a flange tag, acquiring gasket information from a gasket or a gasket tag, comparing the gasket information included in the flange information with the gasket information acquired from the gasket or the gasket tag, selecting a fastening condition from the fastening condition information if the gasket is matched with the flange, acquiring fastening torque applied to the nut from the fastening tool, evaluating whether fastening of the flange is matched with the fastening condition, and presenting fastening result information including at least the fastening condition and the evaluation result in association with the flange.

In order to achieve the above object, according to one aspect of the present invention, a flange fastening management device for use with a fastening tool that sandwiches a gasket between flanges and fastens the gasket by a plurality of bolts and nuts, the flange fastening management device includes: an information acquisition unit that acquires fastening condition information relating to a flange, acquires flange information including gasket information matching the flange from a flange tag, acquires gasket information from a gasket or a gasket tag, and acquires fastening torque applied to the nut from the fastening tool; a processing unit that compares the gasket information included in the flange information with the gasket information obtained from the gasket or the gasket label, selects a fastening condition from the fastening condition information when the gasket and the flange are matched, and evaluates whether or not the fastening of the flange and the fastening condition are matched; and an information presentation unit that presents, in association with the flange, fastening result information including at least the fastening condition and the evaluation result.

Effects of the invention

According to the present invention, any one of the following effects can be obtained.

(1) By using a computer together with a fastening tool having a flange fastening function and a fastening monitoring function, it is possible to realize a unified management of multifunctional processes such as selection of a flange and a gasket, setting of fastening conditions, determination of a fastening state, recording of a fastening result, and information presentation thereof, and to realize flange fastening management that does not depend on experience and feeling of an operator.

(2) By fitting the gasket to the flange, fastening can be performed according to the input fastening condition, a fastening error can be avoided, and the burden on the operator can be reduced.

(3) If the gasket and the flange do not match, the fastening condition cannot be input, so that the flange, the gasket, and the fastening condition can be collectively managed, and the flange fastening management with high reliability can be realized.

(4) Whether or not the fastening state and the fastening condition match is evaluated based on the fastening result information, so that the degree of dependence on the operator can be reduced, and uniform fastening with a small error can be realized.

(5) Since the fastening information including the fastening condition and the evaluation result of the fastening is presented, the fastening state can be confirmed based on the information.

Drawings

Fig. 1 is a diagram showing a flange fastening management system according to an embodiment.

Fig. 2 is a command diagram showing processing commands of the flange fastening management system.

Fig. 3 is a view showing an example of the flange fastening tool.

Fig. 4 is a diagram showing a controller and a storage unit.

Fig. 5 is a diagram showing a server computer.

Fig. 6 is a diagram showing an operator information table, an operator tag, and operator tag information.

Fig. 7 is a diagram showing a fastening condition table.

Fig. 8 is a diagram showing flange information and a flange label.

Fig. 9 is a diagram showing gasket information and a gasket label.

Fig. 10 is a diagram showing the fastening result information and the 1 st log information table.

Fig. 11 is a diagram showing the 2 nd log information table.

Fig. 12 is a flowchart showing the processing steps for fastening the flange.

Fig. 13 is a flowchart showing the processing procedure of the controller.

Fig. 14 is a flowchart showing the processing procedure of the controller after fastening.

Fig. 15 is a view showing the processing and classification of the gasket of example 2.

Fig. 16 is a diagram showing an example of classification of gaskets.

Fig. 17 is a flowchart showing the control of the flange fastening tool according to embodiment 3.

Detailed Description

< Flange fastening management System >

FIG. 1 illustrates one embodiment of a flange fastening management system. The structure shown in fig. 1 is merely an example, and the present invention is not limited to this structure.

The flange tightening management system 2 has a flange tightening tool (hereinafter simply referred to as "tightening tool") 4, a controller 6, and a server computer (hereinafter simply referred to as "server") 8.

The tightening tool 4 is a member for generating a torque τ required for tightening, and a general electric tool such as a tightening tool or a nut runner may be used as the tightening tool 4. In the flange fastening portion 10 to be fastened, a gasket 14 is sandwiched between the flanges 12 of the flange joint, a plurality of bolts 16 are provided, and nuts 18 are attached to the bolts 16. The operator holds the device body 20 of the fastening tool 4 by the grip 22, fits the socket 23 into the nut 18, and pushes the trigger 24 to apply a torque τ corresponding to the fastening condition from the fastening tool 4. The flange 12 can be fastened by fastening the nut 18.

The controller 6 is connected to the fastening tool 4 via a cable 26. The controller 6 is an example of a fastening management device, and is constituted by a computer, for example. A wireless connection such as Wi-Fi may also be employed instead of a wired connection using the cable 26. The front panel 28 of the controller 6 has a display section 32 and a plurality of input keys 30.

The controller 6 executes, for example, the following processing:

a) obtaining fastening condition information associated with the flange 12;

b) acquiring flange information of the flange 12;

c) acquiring gasket information of the gasket 14;

d) comparing the gasket information included in the flange information with the gasket information acquired from the gasket 14;

e) when the flange 12 and the gasket 14 are matched, the fastening condition is selected and the fastening condition is input to the fastening tool 4 based on the fastening condition information;

f) acquiring fastening information from the fastening tool 4 during or after fastening is completed, and evaluating whether the fastening matches fastening conditions; and

g) fastening result information including at least the fastening condition and the evaluation result is presented in association with the flange 12.

The controller 6 is connected to the server 8 by wire or wirelessly as indicated by a broken line 34. The server 8 is a computer that assists or manages the controller 6, and is constituted by a personal computer, for example. The server 8 is provided with, for example, a processing unit 36, an input operation unit 38, and a monitor 40.

< processing step for Flange fastening management >

Fig. 2 shows processing instructions for flange tightening management using the tightening tool 4, the controller 6, and the server 8. In this processing Step, each Step is represented by a Step (Step: S) and a number. The flange label 42 is attached to the flange 12 before fastening, for example, and displays gasket information. The gasket label 44 is attached to the gasket 14 before fastening, for example, and displays gasket information.

The server 8 provides the fastening condition information associated with the flange 12 to the controller 6 (S101).

The controller 6 acquires flange information from the flange label 42 (S102). The flange information includes gasket information indicating a gasket that matches the flange to which the flange label 42 is attached.

The gasket information is acquired from the gasket label 44 (S103), and the gasket information included in the flange information is compared with the gasket information acquired from the gasket label 44 (S104).

If the gasket 14 is matched with the flange 12 (yes in S105), the controller 6 selects a matched fastening condition from the fastening condition information (S106), and inputs the fastening condition to the fastening tool 4 (S107).

If the gasket 14 does not match the flange 12 (no in S105), an error is displayed (S108), and the operator is prompted to replace the gasket with the matching gasket 14.

The fastening tool 4 can fasten the flange 12 according to the input fastening condition (S109). The operator can apply the torque τ corresponding to the input fastening condition to the nut 18 of the flange fastening portion 10 by operating the trigger 24 to cause the fastening tool 4 to generate the torque τ.

In the fastening tool 4, the torque τ applied to the nut 18 is detected as fastening information during or after fastening (S110).

The controller 6 acquires fastening information during or after fastening from the fastening tool 4 (S111), and evaluates whether or not the fastening of the flange 12 matches the fastening condition (S112).

The controller 6 supplies fastening information related to the flange 12 and including at least the fastening condition and the evaluation result to the server 8 (S113). The server 8 displays the provided fastening information on the monitor 40 (S114).

The relationship between the above-described processes a) to g) and steps in this processing step is as follows.

a) Obtaining fastening condition information associated with the flange 12: s101

b) Flange information of the flange 12 is acquired: s102

c) Obtaining gasket information of the gasket 14: s103

d) The gasket information included in the flange information is collated with the gasket information acquired from the gasket 14: s104

e) If the flange 12 and the gasket 14 are matched, a fastening condition is selected from the fastening condition information, and the fastening condition is input to the fastening tool 4: s105, S106, S107

f) Fastening information during or after fastening is acquired from the fastening tool 4, and whether or not the fastening and fastening conditions match is evaluated: s111, S112

g) Fastening result information including at least the fastening condition and the evaluation result is presented in association with the flange 12: s113 and S114

< Effect of one embodiment >

(1) The controller 6 receives the fastening condition information supplied from the server 8, and can give the fastening tool 4 the fastening condition matching the flange 12 and the gasket 14 based on the fastening condition information. The tightening tool 4 can perform tightening according to the input tightening condition, and can avoid a tightening error and reduce the burden on the operator.

(2) The gasket information obtained from the flange label 42 includes gasket information indicating the matched gasket 14, and the gasket information is compared with the gasket information obtained from the gasket label 44 to determine whether or not the gasket and the flange are matched, so that it is possible to prevent selection of an incorrect gasket for the specified flange, and to realize uniform management of the flange, the gasket, and the fastening condition. As a result, reliable flange fastening management can be realized.

(3) If the selected gasket 14 does not match the flange 12 to be fastened, the fastening condition cannot be selected and input with respect to the fastening tool 4, so that selection error of the operator and setting error of the fastening condition can be prevented, and the reliability of fastening can be improved while reducing the burden on the operator.

(4) Whether the fastening state matches the fastening condition is evaluated based on the fastening information during or after fastening, so that the dependence on the operator can be reduced, and the fastening error can be avoided or reduced.

(5) The fastening information including the fastening conditions and the fastening evaluation results can be recorded and presented, and the conventional fastening state can be confirmed, for example, from the fastening information recorded in the server 8, while the fastening state during fastening can be easily monitored and confirmed.

Example 1

< fastening tool 4 >

Fig. 3 shows an example of the fastening tool 4 connectable to the controller 6. The fastening tool 4 includes a control unit 48, a motor 50, and a torque sensor 52, which are included in a general electric power tool.

The controller 6 is connected to the control unit 48 through a cable 26. Instead of the wired connection, a wireless connection using Wi-Fi communication or the like may be used to connect the controller 6 to the control unit 48.

The control unit 48 includes a computer and a motor drive unit. The control unit 48 is supplied with control information such as fastening condition information from the controller 6, and obtains fastening result information. The motor 50 is driven according to the inputted tightening condition, and when the trigger switch 54 is turned on, a driving current is supplied to the motor 50.

In fastening the flange 12, the rotational torque of the motor 50 is applied to the nut 18 described above from the rotary shaft 56 through the socket 23. The rotary shaft 56 may have a gear mechanism so as to transmit the rotational force of the motor 50 to the socket 23 at a desired gear ratio.

The torque sensor 52 detects the torque τ from the motor 50 or the rotary shaft 56. The detected torque τ is applied to the control unit 48, and is supplied to the controller 6 through the control unit 48. The detection torque τ is an example of fastening result information.

The torque sensor 52 may be provided outside the fastening tool 4 as long as it can detect the fastening torque τ of the bolt 16 and the nut 18.

< controller 6 >

Fig. 4 a shows an example of the controller 6. The controller 6 is a control unit of the tightening tool 4, and is an example of a flange tightening management device.

The controller 6 is a computer, and includes a processor 74, a storage unit 76, an input/output unit (I/O)78, an input operation unit 80, a communication unit 82, and a display unit 84.

The processor 74 is an example of a processing unit and an information acquiring unit, and performs information processing on an OS (Operating System) and a flange fastening management program in the storage unit 76. This information processing includes control such as acquisition of fastening condition information from the server 8, input of fastening conditions to the fastening tool 4 and acquisition of fastening conditions from the fastening tool 4, acquisition of fastening result information from the fastening tool 4, monitoring and evaluation of the fastening state, display of evaluation results, and output of fastening result information.

The storage unit 76 is used to store OS, programs, fastening condition information, detection information, and the like, and includes a ROM (Read Only Memory) and a RAM (Random Access Memory). The storage unit 76 includes a storage area 76-2 in addition to the temporary storage area 76-1. The storage unit 76 may use a storage element capable of holding storage contents.

The I/O78 is controlled by the processor 74 for input and output of control information. The communication unit 82 is used for connection with the server 8 or the like by wireless, for example. The I/O78 is connected to a barcode reader 86 and a detachable external memory 88 as external devices, for example. The barcode reader 86 is an example of an information acquisition unit that acquires information by a barcode. The external memory 88 is a memory for retrieving log information, and may be, for example, a usb (universal serial bus) memory.

The input operation unit 80 includes a key switch, a touch sensor, and the like, and is used to input information, take out output information, switch modes, and the like.

The communication unit 82 is an example of an output unit, and is controlled by the processor 74 for wireless connection and internet connection with an external device such as the fastening tool 4 and the server 8.

The display unit 84 is an example of an information presentation unit, and includes, for example, a green light 84-1 and a red light 84-2. The display unit 84 is controlled by the processor 74, and as a result of the evaluation of the state, the green light 84-1 is turned on at a normal time, and the red light 84-2 is turned on at an abnormal time.

Fig. 4B shows an example of the storage content of the storage unit 76. The temporary storage area 76-1 temporarily stores flange information 90 obtained from the flange 12, gasket information 92 obtained from the gasket 14, worker information 94 obtained from a worker tag 93 (B in fig. 6), fastening result information 95 obtained from the fastening tool 4, and the like.

The storage area 76-2 is constructed with a database such as a fastening condition table 96 and a log information table 98. The fastening condition information associated with the flange is recorded in the fastening condition table 96. Information such as the tightening result and the tightening determination result is recorded in the log information table 98.

< Server 8 >

Fig. 5 shows an example of the server 8. The server 8 is an auxiliary device of the controller 6, and is an example of a presentation means of log information.

The server 8 includes a processor 100, a storage unit 102, an input/output unit (I/O)104, a communication unit 106, the input operation unit 38, and the monitor 40 in the processing unit 36.

The processor 100 performs information processing on the OS, the flange fastening management program, and the like in the storage unit 102. The information processing includes processing of supplying the fastening condition information to the controller 6, acquiring log information indicating the fastening result from the controller 6, presenting the log information table 98, and the like.

The storage section 102 is used for storage of an OS, a flange fastening management program, fastening condition information, log information, and the like, and has a ROM and a RAM. The storage unit 102 may use a storage device such as a hard disk or a semiconductor memory that can hold storage contents.

The I/O104 is controlled by the processor 100 for inputting and outputting control information. The communication unit 106 is used for connection with the controller 6 and the like by wireless, for example. The external memory 88 described above is connected as an external device to the I/O104.

The communication section 106 is controlled by the processor 100 for wireless connection and internet connection with external devices such as the fastening tool 4, the controller 6, and the like.

The input operation unit 38 is used for inputting input information, extracting output information, switching modes, and the like.

The monitor 40 is an example of an information presentation unit and a display unit, and is used for displaying, for example, a log information table 98. The screen display unit of the monitor 40 includes a touch panel 108, and input information corresponding to display information may be input instead of the input operation unit 38.

< operator information 94 >

A of fig. 6 shows an operator information table. The worker information table 110 stores worker information acquired by the controller 6 from a worker who is responsible for fastening. The worker information table 110 includes information such as a worker id (identification), a user, and a worker name as an example of worker information. The worker ID is identification information for identifying a worker. The user is a company to which the worker belongs, a company name of a fastening part, and the like. The operator name is the name of the operator, etc.

As shown in a of fig. 6, the worker information table 110 includes an ID unit 110-1, a company name unit 110-2, and a worker name unit 110-3. The ID unit 110-1 stores an operator ID. The company name part 110-2 stores the name of the company to which it belongs. The worker name part 110-3 stores the name of the worker.

The worker information to be stored in the worker information table 110 may be acquired from the worker tag 93 attached to the worker 112 as shown in B of fig. 6. When the bar code 116 is displayed on the worker tag 93, the worker tag information 118 can be read by using the bar code reader 86. C of fig. 6 shows the read worker tag information 118. The worker tag information 118 includes a worker ID, a company name, and a worker name to be stored in the worker information table 110.

The worker information is acquired from the worker tag 93 by the controller 6 at the time of starting fastening, and when the worker information table 110 is formed, it is associated with the flange information to be a fastening record.

< fastening conditions Table 96 >

Fig. 7 shows an example of the fastening condition table 96. The fastening condition table 96 stores fastening condition information and is provided from the server 8 to the controller 6. The fastening condition table 96 includes, as examples of fastening condition information, application site information, flange information 90, gasket information 92, fastening portion information, and fastening condition information. The application location information is information such as an implementation line. The flange information 90 is individual information used for identification of the flange 12. The mat seal information 92 is individual information used for identifying the mat seal 14. The fastening portion information is information such as the number of bolts of the flange fastening portion 10. The fastening condition information includes identification information of the fastening condition, the number of fastening turns, and the like.

As shown in fig. 7, the fastening condition table 96 includes a line information portion 96-1, a flange information portion 96-2, a gasket information portion 96-3, a bolt information portion 96-4, and a fastening condition information portion 96-5.

The line information section 96-1 stores, for example, identification information of fastening portions such as the wiring lines of LineA, LineB. The flange information portion 96-2 stores a flange number, a flange size, and the like for identifying the flange 12. The gasket information section 96-3 stores a gasket type, a gasket size, and the like for identifying the gasket 14. The bolt information portion 96-4 stores the number of bolts and the like. The fastening condition information section 96-5 stores a fastening condition number for identifying the fastening condition, Pass1 indicating the number of turns, Pass2 · Pass13, and the like.

Since the server 8 provides the fastening condition table 96 as the fastening condition information, the controller 6 can grasp the necessary fastening condition information related to fastening between the server 8 and the server, and can independently apply the fastening condition information.

< Flange information 90 >

A of fig. 8 shows flange 12 and flange label 42. In this example, flange tab 42 is suspended from flange 12 by wire 120.

The flange label 42 is displayed with a barcode 122, and the barcode reader 86 reads the barcode 122 to obtain flange label information 124.

The flange label information 124 is an example of flange information, and includes the flange information and related information stored in the fastening condition table 96. The related information includes line information and gasket information.

As shown in B of fig. 8, the flange label information 124 contains use site information, flange identification information, gasket information, and fastening condition information. The line name 124-1 stores, as the use site information, identification information of a fastening site such as a piping line of LineA, LineB · and the like. The flange information 124-2 stores a flange number, a flange size, and the like for identifying the flange 12. The mat seal information 124-3 stores therein a mat seal model number for identifying the mat seal 14. The fastening step 124-4 stores a fastening condition number for identifying the fastening condition.

Since the gasket information closely related to the flange 12 is included in the flange label information 124, the matching gasket 14 can be automatically identified when the flange 12 is selected. Further, by comparing the gasket information included in the flange label information 124 with the gasket information obtained from the gasket label 44, it is possible to quickly determine whether or not the gasket 14 is matched with the flange 12, and it is possible to perform a highly reliable matching determination.

< gasket information 92 >

A of fig. 9 shows the gasket housing. The gasket case 126 is, for example, a synthetic resin case having an openable and closable lid 130 on a case body 128 that can house the gasket 14. The cover 130 is provided with a transparent window portion 132. The gasket 14 can be visually confirmed through the transparent window portion 132.

The gasket case 126 is provided with a gasket label 44, a barcode 134 is displayed on the gasket label 44, and when the barcode 134 is read by the barcode reader 86, gasket label information 136 can be acquired.

The gasket label information 136 includes the gasket information 92. As shown in B of fig. 9, the mat seal tag information 136 stores the model number and size of the mat seal.

< information on fastening result >

Fig. 10 a shows an example of the fastening result information. The fastening result information 138 includes fastening conditions 138-1, fastening date and time 138-2, an error determination result 138-3, a 1 st fastening result 138-4, and a 2 nd fastening result 138-5.

The fastening condition 138-1 and the use site information in the fastening result information 138 are specified by LineA, for example. Further, fastening conditions of the respective bolts are also stored. Fastening date and time 138-2 shows the fastening day and time or time period. The erroneous determination result 138-3 shows a determination result as to whether or not the fastening state and the fastening condition coincide. The 1 st tightening result 138-4 shows the measured value of the torque and the 2 nd tightening result 138-5 shows the nut rotation angle.

The tightening result information 138 includes both result information in the log information table 98-1 (B in fig. 4) shown in B in fig. 10 and result information in the log information table 98-2 (B in fig. 4) to which information on the date and time of the operation and the operator and the like are added as shown in fig. 11 as the tightening result obtained from the tightening tool 4.

As shown in B of fig. 10, the log information table 98-1 includes the application site information, the flange information 90, the gasket information 92, the fastening portion information, and the fastening condition information, as well as the fastening condition information (fig. 7), and the fastening result is added in association with these information. The fastening result is fastening result information obtained from the fastening tool 4.

The log information table 98-1 includes a line information section 98-11, a flange information section 98-12, a gasket information section 98-13, a bolt information section 98-14, a fastening condition information section 98-15, a fastening result information section 98-16, and an operator ID section 98-17.

As shown in FIG. 11, the log information table 98-2 includes a line information section 98-21, a flange information section 98-22, a gasket information section 98-23, a fastening condition information section 98-25, an operator ID section 98-27, a fastening date and time section 98-28, an error determination section 98-29, a 1 st-turn fastening result section 98-30, a final-turn fastening result section 98-31, and a turn number section 98-32, as in the log information table 98-1 (B of FIG. 10). The worker ID part 98-27 stores the same worker ID as the worker ID part 98-17. Thereby, the worker is specified in association with the flange 12. In the log information table 98-2, the bolt information portion 98-14 is omitted differently from the log information table 98-1.

Fastening time-of-day portions 98-28 store the time-of-day of fastening. Thereby, the fastening day is determined in association with the flange 12. The error determination units 98 to 29 display the determination result of whether or not the fastening state and the fastening condition match, and indicate a match if "OK" and a mismatch if "NG". The 1 st turn fastening result portions 98-30 show the fastening result (torque) of the 1 st turn of the rotational fastening of the plurality of bolts 16 on the flange 12. The final-turn fastening result portions 98-31 show the fastening result (torque) of the last turn of the rotational fastening of the plurality of bolts 16. The turns 98-32 indicate the number of revolutions.

< fastening step >

Fig. 12 shows a fastening step of the flange fastening management system 2 (fig. 1) of embodiment 1.

In this step, as shown in fig. 12, when fastening is started, worker information 94 is acquired (S201). When the worker information 94 is acquired, the worker information 94 may be read from the barcode 116 of the worker tag 93 by the barcode reader 86.

After this step, the controller 6 determines whether or not the operator information 94 is read (S202). If the worker information 94 is not read (no in S202), an error is displayed on the display unit 84 (S203), and, for example, the red lamp 84-2 is turned on. This prompts the operator 112 to read the operator information 94 again, and the barcode reader 86 can read the barcode 116 again. As a result, when the operator information 94 is successfully acquired, the red light 84-2 is turned off and the green light 84-1 is turned on, thereby displaying that the operator information 94 is acquired.

When the worker information 94 is read (YES in S202), the flange information 90 is acquired (S204). When the flange information 90 is acquired, the flange label information 124 (B in fig. 8) may be read from the flange label 42 using the barcode reader 86, as with the worker information 94. In this example, the determination as to whether or not the flange information 90 has been read is not performed, but a read error may be determined in the same manner as the worker information 94 described above.

After the flange information 90 is read, the gasket information 92 is acquired (S205). When the mat seal information 92 is acquired, the barcode reader 86 may read mat seal label information from the barcode 134 of the mat seal label 44.

After the operator information 94, the flange information 90, and the gasket information 92 are acquired, it is determined whether or not the gasket 14 and the flange 12 are matched (S206). That is, it is determined whether or not the gasket information 92 acquired from the gasket 14 matches the gasket information included in the flange information 90.

If the gasket 14 is not matched with the flange 12 (no in S206), an error is displayed on the display portion 84 (S207). The error display lights, for example, the red lamp 84-2. This prompts the operator 112 to select the matching gasket 14 again. As a result, when the matching mat seal 14 is selected, the red lamp 84-2 is turned off and the green lamp 84-1 is turned on.

This selects the gasket 14 matching the worker information 94 and the flange information 90, and has the precondition of fastening. At this time, the fastening condition is automatically selected based on the fastening condition information (S208), and the controller 6 sets the fastening condition for the fastening tool 4.

When the tightening conditions are set, the nut 18 is tightened using the tightening tool 4 (S209). The controller 6 acquires fastening result information from the fastening tool 4 (S210). The result information includes the tightening result of the torque τ and the nut rotation angle.

The controller 6 determines whether or not the fastening result matches the fastening condition based on the acquired result information (S211). If the fastening result does not match the fastening condition (no in S211), an error display is performed (S212). The error display turns on the red lamp 84-2, and notifies the worker 112 that a fastening result matching the fastening condition is not obtained.

Then, the controller 6 records the fastening result including the erroneous judgment (S213). The fastening result is recorded in the log information table 98-1 (S214), completing the process.

The log information table 98-2 can be displayed on the monitor 40 of the server 8 by outputting the log information to the external memory 88 and installing the external memory 88 in the server 8.

< Process Steps from preparation for fastening to implementation of fastening >

Fig. 13 shows the process steps from the preparation for fastening to the implementation of fastening. Before the flange is fastened, the operator information 94 is acquired from the operator tag 93 (S301), the flange information 90 is acquired from the flange tag 42 (S302), and then the gasket information 92 is acquired from the gasket tag 44 (S303), and then the comparison and determination between the gasket information included in the flange information 90 and the gasket information indicating the actual gasket 14 are performed (S304). In the comparison and determination (S304), a determination is made as to whether or not the gasket and the flange are matched (S305). This makes it possible to determine whether or not the selected gasket is fitted to the flange to be fastened.

If the mat seal 14 does not match the flange 12 (no at S305), the red lamp 84-2 is lit as an error display (S306), and the process returns to S303. That is, the worker 112 is notified of the mismatch of the mat seal 14 by the lighting of the red lamp 84-2, and the worker 112 is prompted to replace the mat seal 14.

When the mat seal 14 is selected again, the mat seal information 92 is acquired from the mat seal label 44 on the mat seal 14 (S303), and comparison and determination are performed again (S304). As a result, when the mat seal 14 is fitted to the flange 12 (yes in S305), the green lamp 84-1 is turned on as a fitting display (S307), and the fastening condition can be selected (S308). That is, if the green light 84-1 is not illuminated, the selection of the fastening condition is prevented.

When the fastening condition is selected, the fastening condition table 96 in the storage unit 76 is referred to, and the fastening condition number is selected from the fastening condition table 96 (S308).

The fastening condition number is input to the fastening tool 4(S309), and the fastening operation is performed (S310). The tightening is performed by the worker 112 using the tightening tool 4.

< processing step from after fastening to output of log information >

Fig. 14 shows processing steps from fastening to output of log information. The fastening result is acquired from the fastening tool 4 (S401), and the fastening result is temporarily stored in the temporary storage area 76-1 of the storage section 76. The fastening result includes the detected torque of the torque sensor 52. A log information table 98-1 is created based on the result of the fastening.

The fastening result is determined by referring to the fastening condition number X in the fastening condition table 96 (S402). In this determination, it is determined whether or not the fastening result matches the fastening condition (S403).

If the fastening result matches the fastening condition (yes at S403), the green light 84-1 is turned on as a display indicating a match (S404), and if the fastening result does not match the fastening condition (no at S403), the red light 84-2 is turned on as a display indicating a mismatch.

The log information table 98-1 is created based on the fastening result, and the log information is collated and processed to create the log information table 98-2 (S405).

Then, the log information table 98-2 is written into the external memory 88, for example, and is provided to the server 8 via the external memory 88 so as to be presented (S406). The log information table 98-2 may also be forwarded to the server 8 from the controller 6 wirelessly.

< Effect of example 1 >

(1) Since the manager provides the fastening conditions from the server 8 to the controller 6, the fastening conditions can be strictly managed, and excellent traceability can be constructed.

(2) Since the controller 6 for storing the fastening condition information is provided to the operator who is responsible for fastening the flange 12, the management of the fastening condition can be easily performed, and the burden on the operator can be reduced.

(3) Since the fastening condition information is supplied from the server 8 to the controller 6 at the time of flange fastening, the fastening implementation is not limited to the fastening condition information in the controller 6, and the reliability of fastening implementation is improved.

(4) After the flange 12 is selected, the gasket 14 is selected, and the gasket information obtained from the gasket 14 is compared with the gasket information in the flange information to determine whether or not the gasket information matches, so that the gasket 14 matching the flange 12 can be selected.

(5) If the mat seal 14 is not matched, the worker can be prompted to replace the mat seal 14 by lighting the red lamp 84-2, and the matched mat seal 14 can be selected.

(6) If the matching of the gasket 14 cannot be confirmed through the comparison of the gasket 14, the shift to the fastening condition providing stage is prevented, and since the fastening condition is selected after the flange 12 and the gasket 14 are determined, the unified management of the flange 12, the gasket 14, and the fastening condition can be realized.

(7) Since the matching fastening condition is automatically selected based on the fastening condition information after the condition (6) is passed, there is no need for the operator to manage the fastening condition, and the burden on the operator can be reduced in setting the fastening condition. The fastening condition setting device can avoid setting fastening conditions depending on experience and feeling of an operator, realize automation, and prevent complicated work due to written instructions and input errors and fastening errors due to written instructions. This fastening condition can be specifically provided to the controller 6 from the server 8, respectively, and therefore, for example, a generalized operation of fastening all bolts with the same torque can be avoided, and a fine fastening result can be achieved. The torque management with high accuracy provided by the fastening condition information can be performed, and the fastening of the torque τ different for each bolt as the fastening target can be performed reliably and efficiently. The flange fastening management can be performed with high accuracy far exceeding the management depending on the individuality and feeling of the operator.

(8) Since the flange information is obtained from the flange label 42 attached to the flange 12 and the gasket information is obtained from the gasket label 44 attached to the gasket 14, the reliability of the flange information and the gasket information can be improved and the work for obtaining each information can be reduced.

(9) By labeling the flange label 42 and the gasket label 44 with information codes such as a barcode and a QR code (registered trademark) and using an input device such as the barcode reader 86, rapidity and reliability of information acquisition can be improved.

(10) In fastening the flange 12, it can be determined whether or not the fastening condition is satisfied. In the determination of the satisfaction of the fastening condition during fastening, the determination of the quality of a part defect or a work defect may be included, such as a fastening defect, a defect of the bolt 16 or the nut 18, a defect due to fastening, an improper secondary fastening of the same bolt, an error in the fastening order, or an omission of fastening. As a result of these satisfaction determinations, whether or not the fastening result is good (OK/NG) can be determined, and the fastening result can be recorded in log information. Since these determinations and recordings are performed simultaneously in synchronization with the flange fastening, a highly reliable work result can be obtained without lowering the work efficiency.

(11) The fastening result including such information of whether good or not is supplied from the fastening tool 4 to the controller 6 to be recorded, and can be supplied from the controller 6 to the server 8 as log information. The controller 6 collates the fastening results, and not only all information but also extracts necessary information and edits the extracted information to create log information.

(12) The fastening result information is sorted into log information tables 98-1, 98-2 and can be transferred from the controller 6 to the external memory 88. The external memory 88 is removed from the controller 6 and attached to the server 8, whereby the log information table 98-2 can be presented.

(13) By developing the log information table 98-2, the manager can easily know whether or not the fastening result matching the fastening condition is obtained. In the log information table 98-2, the result of the erroneous determination can be learned as the matching or non-matching information in the fastening result associated with the flange 12. Since the fastening result includes detailed related information such as a work date related to the flange 12, the details of the work result can be easily known.

(14) Since the operator information is acquired in association with the flange, it is possible to easily know which operator or construction unit is responsible for the flange, together with the date and time, from the work result. In particular, since the judgment of whether or not the gasket information associated with the flange 12 is matched is made before fastening, it is possible to prevent the use of a mismatched gasket.

Example 2

Fig. 15 shows a process from formation of the gasket 14 to classification. As shown in A of FIG. 15, in forming the gasket 14, a plurality of gasket material sheets 140-1, 140-2. cndot. 140-N are used as a raw material of the gasket 14.

As an example of the molding process of the gaskets 14-11, 14-12. cndot. 14-1N, 14-21, 14-22. cndot. 14-2N. cndot. 14-N1, and 14-N2. cndot. 14-NN, the gasket material sheets 140-1 and 140-2. cndot. 140-N are subjected to a press process to produce gaskets 14-11, 14-12. cndot. 14-1N, 14-21, 14-22. cndot. 14-2N. cndot. 14-N1, and 14-N2. cnn of a predetermined shape that are respectively fitted to the respective flanges 14, as shown in B of FIG. 15.

As shown in FIG. 15C, the respective gaskets 14-11, 14-12. cndot. 14-1N, 14-21, 14-22. cndot. 14-2N. cndot. 14-N1, 14-N2. cndot. 14-NN are stored in the mating gasket cases 126-1, 126-2. cndot. 126-N, respectively, and then stored in the plural gasket-dedicated racks 142-1, 142-2. cndot. 142-N in a sorted manner. Shelves 142-1, 142-2. 142-N are an example of a sorting unit.

Each shelf 142-1, 142-2. 142-N is affixed with a shelf label 144-1, 144-2. 144-N for identification. The shelf or receiving gasket can be identified based on the shelf label 144-1, 144-2. 144-N.

Fig. 16 shows the racks 142 sorted by each line. In this example, a rack 142-a for a thread a, a rack 142-B for a thread B, a rack 142-C for a thread C, and a rack 142-D for a thread D are provided for each thread as a plurality of dedicated racks. The rack 142-a for the line a is used for the line a and is distinguished from the racks used for the other lines, and similarly, the racks 142-B for the line B to the racks 142-D for the line D are used for the line B to the line D, respectively, and are distinguished from the racks used for the other lines.

Each shelf 142-a 142-D houses a gasket housing 126, which gasket housing 126 houses the gasket 14 used in the respective line.

< Effect of example 2 >

(1) The gaskets 14-11, 14-12. cndot. 14-1N, 14-21, 14-22. cndot. 14-2N. cndot. 14-N1, and 14-N2. cndot. 14-NN can be stored in the racks 142-1 and 142-2. cndot. 142-N in a sorted manner, and for example, a predetermined number of gaskets can be stored, and the number of consumed and replenished can be managed.

(2) The string a rack 142-a, the string B rack 142-B, the string C rack 142-C, and the string D rack 142-D can store the gaskets 14 required for each string in a sorted manner. This prevents the seal gasket 14 from being mixed between the wires, and enables reliable fastening management.

(3) Shelf labels 144 are attached to the respective shelves 142-1, 142-2 · 142-N, the shelf 142-a for the wire a, the shelf 142-B for the wire B, the shelf 142-C for the wire C, and the shelf 142-D for the wire D, and the purpose of use and the housed mat seal 14 can be specified from the shelf labels 144.

(4) The racks 142-1, 142-2. 142-N, the rack for line A142-A, the rack for line B142-B, the rack for line C142-C, and the rack for line D142-D can be recycled, and the required gaskets 14 can be provided in a sufficient number to the construction site.

(5) Since the increase and decrease in the number of the racks 142-1, 142-2 · 142-N, the rack 142-a for the wire a, the rack 142-B for the wire B, the rack 142-C for the wire C, and the rack 142-D for the wire D, which house the required number of the gaskets 14, can be visually confirmed, it is possible to prevent forgetting to put the gaskets 14.

Example 3

Fig. 17 shows a process procedure of the operation control of the flange fastening tool of embodiment 3.

The fastening torque applied to the nut 18 by the fastening tool 4 is monitored by the torque sensor 52, and the sensor output can be acquired by the controller 6, but in addition to the fastening torque information, the fastening state information may include matching and mismatching of the gasket 14 with respect to the flange 12, and may include a) detachment of the socket 23 from the nut 18, b) a failure of the bolt 16 and the nut 18, and the like.

a) The reason why the socket 23 is disengaged from the nut 18 is that the socket 23 of the fastening tool 4 is not completely engaged with the nut 18, and therefore the socket 23 is disengaged from the nut 18 during fastening. In this case, the torque sensor 52 of the fastening tool 4 may be used as the detection means, and if the detection torque τ is within ± 0.5 [% ] of the set torque, for example, the appropriate torque is obtained, whereas the detection torque τ is reduced at the moment of the socket 23 dropping, and thus the drop can be known. b) The bolt 16 and the nut 18 of (2) are not sufficiently fastened due to rust or the like.

In the process on the controller 6 side, as shown in fig. 17, the controller 6 acquires fastening state information from the fastening tool 4 during fastening of the flange 12 (S501).

The controller 6 determines whether or not the fastening result or the state of the result matches the fastening condition (S502). In this determination, a determination is made as to whether or not the fastening matches the fastening condition (S503).

If the fastening and fastening conditions do not match (no in S503), the red lamp 84-2 is turned on as an error display (S504), and the power supply to the motor 50 is instructed to stop as a measure for prohibiting the operation of the fastening tool 4 (S505), and the process returns to S501. This can prohibit an improper operation and can provide a response to the operator.

When the fastening is matched with the fastening condition (yes in S503), the green lamp 84-1 is turned on as a matching display (S506), and the fastening based on the fastening condition can be performed.

This treatment may be performed at any stage of before, during, and after the fastening of the flange 12, as long as it is continued from before to after the fastening.

< Effect of example 3 >

(1) When a mismatch with the fastening condition occurs during fastening, the driving of the fastening tool 4 is forcibly stopped, so that an improper fastening process can be prevented, and the reliability of the fastening process can be improved.

(2) If a mismatch with the fastening condition occurs during fastening, the driving of the fastening tool 4 is stopped by stopping the power supply, so that it is possible to prevent the fastening from being performed without difficulty and to prevent an unknown situation.

(3) Not only the reliability of the implementation can be improved, but also the safety of the operator can be improved.

[ other embodiments ]

(1) In the above embodiment, the operator information 94 is obtained before the flange information 90 and the gasket information 92 are obtained, but the flange information 90 and the gasket information 92 may be obtained before the operator information 94 is obtained.

(2) In the embodiment and the embodiment, the controller 6 and the server 8 are described as independent devices, but the controller 6 may also function as the server 8. That is, the controller 6 and the server 8 may be integrated.

(3) A mobile information terminal such as a smartphone can be used as the controller 6.

(4) In one embodiment and example, an example in which the controller 6 and the server 8 are set for one fastening tool 4 is shown, however, the controller 6 and the server 8 may be set for a plurality of fastening tools 4, and a single server 8 may be set for a plurality of controllers 6.

(5) In the above-described embodiment, the worker information and the flange, the fastening condition, and the evaluation result are presented in association with the flange information, but the flange, the fastening condition, and the evaluation result may be presented in association with the worker information.

(6) In the above-described embodiment, the gasket information is displayed using the gasket label and the gasket information is obtained from the gasket label, but it is also possible to display the gasket information directly on the gasket and obtain the gasket information from the gasket.

As described above, the most preferred embodiments and examples of the present invention have been described. The present invention is not limited to the above description. Various modifications and changes can be made by those skilled in the art based on the gist of the invention described in the claims or disclosed in the embodiments or examples for carrying out the invention. Such modifications and variations are, of course, included in the scope of the present invention.

Industrial applicability

According to the flange fastening management method, the fastening management system, the fastening management program, and the fastening management device of the present invention, it is possible to realize the collective management of the multifunctional processes such as the selection of the flange and the gasket, the setting of the fastening condition, the judgment of the fastening state, the recording of the fastening result, and the presentation of the information by using the fastening tool and the computer having the flange fastening function, and it is possible to realize the flange fastening management which does not depend on the experience and the feeling of the operator, which is very advantageous.

Description of the reference symbols

2 flange fastening management system

4 Flange fastening tool

6 controller

8 server computer

10 flange fastening part

12 Flange

14 gasket

16 bolt

18 nut

20 device body

22 handle

23 socket

24 trigger

26 Cable

28 front panel part

30 input key

32 display part

34 dashed line

36 treatment part

38 input operation unit

40 monitor

42 flange label

44 gasket label

48 control part

50 motor

52 Torque sensor

54 trigger switch

56 rotating shaft

74 processor

76 storage part

76-1 temporary storage area

76-2 storage area

78 input/output part (I/O)

80 input operation unit

82 communication part

84 display part

84-1 green lamp

84-2 Red Lamp

86 bar code reader

88 external memory

90 flange information

92 gasket information

93 worker label

94 worker information

96 fastening condition table

96-1 line information section

96-2 Flange information section

96-3 gasket information section

96-4 bolt information part

96-5 fastening condition information section

98. 98-1, 98-2 log information table

98-11, 98-21 line information section

98-12, 98-22 flange information section

98-13, 98-23 gasket information section

98-14 bolt information part

98-15, 98-25 fastening condition information section

98-16 fastening result information section

98-17, 98-27 worker ID parts

98-28 fastening date and time part

98-29 error determination unit

98-30 th turn fastening result

98-31 final loop fastening result

98-32 turns

100 processor

102 storage unit

104 input/output part (I/O)

106 communication part

108 touch panel

110 worker information sheet

110-1 ID part

110-2 division of company names

110-3 part of name of worker

112 worker

116 Bar code

118 worker tag information

120 conducting wire

122 bar code

124 flange label information

124-1 line name

124-2 flange information

124-3 gasket information

124-4 fastening step

126 gasket housing

128 casing body

130 cover part

132 transparent window part

134 Bar code

136 gasket label information

138 fastening result information

138-1 fastening Condition

138-2 fastening date and time

138-3 wrong decision result

138-4 th 1 st fastening result

138-5 2 nd fastening results

142-1, 142-2. 142-N rack

142-A line A is with frame

142-B line B rack

142-C line C rack

142-D line D is with frame

Claims (12)

1. A flange fastening management method in which a fastening tool that fastens between flanges sandwiching a gasket using a plurality of bolts and nuts is used together with a computer, the flange fastening management method comprising:

acquiring fastening condition information associated with the flange;

a step of acquiring gasket type information and fastening condition number information matched with a flange from a flange label mounted on the flange;

a step of comparing the gasket type information obtained from the flange label with gasket type information of a gasket to be used, and determining whether or not the gasket is matched with the flange;

selecting a fastening condition number based on the fastening condition number information obtained from the flange tag if the selected gasket is matched with the flange, selecting a fastening condition associated with the fastening condition number from the fastening condition information, setting the fastening condition for the fastening tool, and applying a fastening torque to the bolt or the nut from the fastening tool based on the fastening condition;

a step of acquiring the fastening torque applied to the bolt or the nut from the fastening tool, and evaluating whether or not the fastening of the flange matches the fastening condition; and

and stopping the driving of the fastening tool when the flange is fastened and the fastening condition do not match.

2. The flange fastening management method according to claim 1, further comprising a step of presenting fastening result information including at least the fastening condition and the evaluation result in association with the flange.

3. A flange fastening management method in which a fastening tool that fastens between flanges sandwiching a gasket using a plurality of bolts and nuts is used together with a computer, the flange fastening management method comprising:

acquiring fastening condition information associated with the flange;

a step of acquiring flange information including gasket type information and fastening condition number information that match a flange from a flange label attached to the flange;

a step of acquiring gasket type information from the gasket or from a gasket label attached to the gasket case;

a step of comparing the gasket type information obtained from the flange label with the gasket type information obtained from the gasket or the gasket label to determine whether or not the gasket is fitted to the flange;

selecting a fastening condition number based on the fastening condition number information obtained from the flange label if the gasket is matched with the flange, selecting a fastening condition associated with the fastening condition number from the fastening condition information, and setting the fastening condition for the fastening tool;

a step of acquiring a fastening torque applied to the nut from the fastening tool, and evaluating whether or not the fastening of the flange matches the fastening condition;

presenting fastening result information including at least the fastening condition and the evaluation result in association with the flange; and

and stopping the driving of the fastening tool when the flange is fastened and the fastening condition do not match.

4. The flange fastening management method according to claim 1 or 3,

the method further includes a step of outputting a prompt indicating whether or not the gasket is fitted to the flange.

5. The flange fastening management method according to claim 1 or 3, wherein the method further comprises:

an evaluation of whether or not the flange is matched with the fastening condition is performed in the fastening of the flange.

6. The flange fastening management method according to claim 3, wherein the method further comprises:

a step of acquiring worker information from a worker tag; and

and a step of presenting the flange information, the fastening condition, and the evaluation result in association with the worker information.

7. The flange fastening management method according to claim 3,

the fastening condition number information is information indicating a fastening step.

8. The flange fastening management method according to claim 3,

the fastening condition information includes the flange information.

9. The flange fastening management method according to claim 3, wherein the method further comprises:

a step of forming the gasket material into a gasket; and

and a step of attaching the gasket label to the gasket housing of the gasket.

10. A flange fastening management system, having:

a fastening tool that fastens a plurality of bolts and nuts installed so that the gasket is sandwiched between the flanges;

a controller that controls a fastening action of the fastening tool; and

a server connected with the controller in a wired manner or a wireless manner,

the controller performs the following processing:

retrieving fastening condition information associated with a flange from the server,

obtaining flange information including gasket type information and fastening condition number information matching the flange from a flange tag attached to the flange, obtaining gasket type information from the gasket or from a gasket tag attached to the gasket case,

comparing the gasket type information obtained from the flange label with the gasket type information obtained from the gasket or the gasket label to determine whether the gasket is matched with the flange,

selecting a fastening condition number based on the fastening condition number information obtained from the flange label if the gasket is matched with the flange, selecting a fastening condition associated with the fastening condition number from the fastening condition information, setting the selected fastening condition for the fastening tool,

taking a fastening torque applied from the fastening tool to the nut from the fastening tool, evaluating whether fastening of the flange matches the fastening condition,

providing fastening result information including at least the fastening condition and the evaluation result to the server in association with the flange,

stopping the driving of the fastening tool in case the fastening of the flange does not match the fastening condition.

11. A recording medium in which a flange tightening management program is recorded, the flange tightening management program being a program for causing a computer to realize a computer to use a computer for controlling a tightening tool that sandwiches a gasket between flanges and tightens the gasket with a plurality of bolts and nuts, and the program causing the computer to realize:

the fastening condition information associated with the flange is retrieved,

flange information including gasket type information and fastening condition number information matching the flange is acquired from a flange tag attached to the flange,

the gasket type information is obtained from the gasket or from a gasket label attached to the gasket housing,

comparing the gasket type information obtained from the flange label with the gasket type information obtained from the gasket or the gasket label to determine whether the gasket is matched with the flange,

selecting a fastening condition number based on the fastening condition number information obtained from the flange label if the gasket is matched with the flange, selecting a fastening condition associated with the fastening condition number from the fastening condition information, setting the selected fastening condition for the fastening tool,

taking a fastening torque applied from the fastening tool to the nut from the fastening tool, evaluating whether fastening of the flange matches the fastening condition,

prompting, in association with the flange, fastening result information including at least the fastening condition and the evaluation result,

stopping the driving of the fastening tool in case the fastening of the flange does not match the fastening condition.

12. A flange fastening management device used with a fastening tool that sandwiches a gasket between flanges and fastens with a plurality of bolts and nuts, the flange fastening management device comprising:

an information acquisition unit that acquires fastening condition information associated with a flange, acquires flange information including gasket type information and fastening condition number information that match the flange from a flange tag attached to the flange, acquires gasket type information from a gasket or from a gasket tag attached to a gasket housing, and acquires fastening torque applied to the nut from the fastening tool;

a processing unit that compares the gasket type number information obtained from the flange label with the gasket type number information obtained from the gasket or the gasket label, determines whether or not the gasket is matched with the flange, selects a fastening condition number based on the fastening condition number information obtained from the flange label if the gasket is matched with the flange, selects a fastening condition associated with the fastening condition number from the fastening condition information, sets the fastening condition for the fastening tool, and evaluates whether or not the fastening of the flange is matched with the fastening condition; and

an information presentation unit that presents, in association with the flange, fastening result information including at least the fastening condition and the evaluation result,

the processing portion stops driving of the fastening tool in a case where fastening of the flange does not match the fastening condition.

Images