CN110461549B - Sealing construction management method, sealing construction management device, sealing construction management program, and sealing construction management system - Google Patents
Sealing construction management method, sealing construction management device, sealing construction management program, and sealing construction management system Download PDFInfo
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- 238000007789 sealing Methods 0.000 title claims abstract description 89
- 238000009430 construction management Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 28
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- 238000007726 management method Methods 0.000 description 30
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
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- G06Q50/04—Manufacturing
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
A sealing construction management method sets a plurality of fastening positions on a flange sandwiching a gasket (12), and sets a bolt (6) and a nut (8) at each fastening position to fasten, wherein a torque value applied to the bolt or the nut is calculated or selected based on the number of cycles of the fastening position or the fastening position, a torque value is set for a fastening tool (14), and an output torque of the fastening tool is changed stepwise or continuously based on the number of cycles or the fastening position. This enables the axial force of each bolt to reach the target axial force.
Description
Technical Field
The present invention relates to a sealing construction management technique used for flange fastening for connecting pipes, valves, pumps, and the like.
Background
A flange joint is used for pipe connection, connection between a pump and a pipe, and the like. The flanges of the flange joint are fastened by bolts and nuts arranged at a plurality of positions of the flanges with spacers interposed therebetween. A fastening tool such as a torque wrench is used for this fastening.
With regard to this fastening tool, there are known: in a tool using an electric motor as a rotary drive source, a current pulse is intermittently applied to the motor, and a current value is controlled based on a detected torque, and the current pulse is stopped when a target torque is reached (for example, patent document 1).
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 2002-
Disclosure of Invention
Problems to be solved by the invention
In fastening the flange joint, a fastening torque is applied from a fastening tool to bolts and nuts arranged at a plurality of locations. If a tool capable of managing torque is used for this fastening, a desired fastening torque may be applied to the bolt and the nut, and uniform fastening can be achieved.
However, the flanges and gaskets are very diverse and considerable experience is required to select a suitable gasket. Further, the fastening steps of the plurality of bolts arranged on the flange are not uniform, and even if a fastening tool capable of managing torque is used, the construction management cannot be reduced only by the fastening tool. In order to improve the reliability of construction, it is still desirable to perform construction by skilled operators, and training and experience are required to achieve proficiency, which results in an excessive burden on the operators, and therefore management of sealing construction is extremely important.
In such sealing work, in order to avoid uneven fastening, crushing, and the like, in addition to selection and combination of fastening methods such as diagonal fastening and hoop fastening, the skill, ability, experience, and the like of a worker affect the work precision, and the work varies.
In view of the above problems, an object of the present invention is to automate the setting of the output torque according to the number of cycles of the fastening portion and the fastening portion, to facilitate the construction management of the seal, and to improve the construction accuracy.
In view of the above problems, it is another object of the present invention to facilitate the work management of sealing and improve the work accuracy by using a fastening tool capable of automatically setting an output torque.
Means for solving the problems
In order to achieve the above object, one aspect of the sealing management method according to the present invention is a sealing management method in which a plurality of fastening portions are set in a flange sandwiching a gasket, and a bolt and a nut are disposed at each fastening portion and fastened, the sealing management method including the steps of: calculating or selecting a value of torque applied to the bolt or the nut according to the number of cycles of the fastening site or the fastening site; setting the torque value for a fastening tool; and changing an output torque of the fastening tool in stages or continuously according to the number of cycles or the fastening portion.
The sealing construction management method may further include a step of detecting the number of cycles of the fastening tool or the fastening portion.
The sealing construction management method may further include a step of setting the number of cycles of the fastening portion or the fastening portion for the fastening tool.
The sealing construction management method may include the steps of: detecting the axial force of the bolt; and detecting the number of cycles or the fastening portion of the fastening tool using information on the detected change in the axial force and information identifying the bolt.
In order to achieve the above object, one aspect of the present invention provides a construction seal management device in which a plurality of fastening portions are set on a flange sandwiching a gasket, and a bolt and a nut are disposed at each fastening portion to fasten the flange, the construction seal management device including: and a control unit that calculates or selects a torque value to be applied to the bolt or the nut based on the number of cycles of the fastening portion or the fastening portion, sets the torque value for a fastening tool, and changes an output torque of the fastening tool in stages or continuously based on the number of cycles or the fastening portion.
The sealing construction management device may further include a detection unit that detects the number of cycles of the fastening portion of the fastening tool or the fastening portion.
The sealing construction management device may further include a setting unit configured to set the number of cycles of the fastening portion or the fastening portion for the fastening tool. .
In the above sealing work management apparatus, the control unit may be provided in the fastening tool or may be provided separately from the fastening tool and connected to the fastening tool in a wired or wireless manner.
In the above sealing construction management device, the detection means may include an axial force sensor that detects an axial force of the bolt, and the number of cycles of the fastening tool or the fastening portion may be detected using information on a change in the axial force detected by the axial force sensor and information identifying the bolt.
In order to achieve the above object, one aspect of the sealing construction management program of the present invention is a program for execution by a computer, the sealing construction management program being for implementing, by the computer, functions of: calculating or selecting a value of torque to be applied to the bolt or the nut based on a number of cycles of a plurality of fastening portions set on the flange sandwiching the gasket or the fastening portions; setting the torque value for a fastening tool; and changing an output torque of the fastening tool in stages or continuously according to the number of cycles or the fastening portion.
In order to achieve the above object, one aspect of the present invention provides a construction seal management system in which a plurality of fastening portions are set on a flange sandwiching a gasket, and a bolt and a nut are disposed at each fastening portion and fastened, the construction seal management system including: a fastening tool capable of controlling an output torque applied to the bolt or the nut in stages or continuously; and a controller connected to the fastening tool by wire or wirelessly, for calculating or selecting a torque value to be applied to the bolt or the nut based on a number of cycles of the fastening portion or the fastening portion, setting the torque value for the fastening tool, and changing an output torque of the fastening tool in stages or continuously based on the number of cycles or the fastening portion.
Effects of the invention
According to the present invention, any one of the following effects can be obtained.
(1) By changing the output torque applied from the fastening tool to the bolt or the nut at the fastening portion of the flange in stages or continuously in accordance with the number of cycles of the fastening portion or the fastening portion, the axial force of each bolt can be made to reach the target axial force.
(2) Since the output torque applied from the fastening tool to the bolt or the nut at the fastening portion of the flange can be automatically changed to an optimum value in stages or continuously according to the number of cycles of the fastening portion or the fastening portion, it is possible to realize high-precision sealing work without being affected by the skill or intuition of the worker.
(3) Since the number of cycles for bringing the axial force of each bolt at the plurality of fastening portions to the target axial force can be set, the sealing work can be unified and speeded up.
(4) The mistake of constructors can be reduced, and the reliability of sealing construction can be improved.
Other objects, features, and advantages of the present invention will become more apparent with reference to the accompanying drawings and embodiments.
Drawings
Fig. 1 is a diagram illustrating a sealing construction managing apparatus according to embodiment 1.
Fig. 2 is a view showing a circulation pattern of the fastening portion.
Fig. 3 is a flowchart showing the procedure of the sealing work management.
Fig. 4 a is a diagram showing the sealing construction management system according to embodiment 2, and fig. 4B is a diagram showing the function of the control unit.
Fig. 5 is a diagram showing a processing procedure of the sealing construction management.
Fig. 6 is a diagram showing the sealing work management apparatus according to embodiment 3.
Fig. 7 is a diagram showing a sealing construction management system of the embodiment.
Fig. 8 a is a diagram showing an example of a fastening tool, and fig. 8B is a diagram showing an example of an axial force sensor.
Fig. 9 a is a diagram showing hardware of the controller, and fig. 9B is a diagram showing the storage unit.
Fig. 10 is a diagram showing a server.
Fig. 11 is a diagram showing a fastening condition table.
Fig. 12 is a diagram showing a torque value table.
Fig. 13 is a diagram showing a modification of the torque value table.
Fig. 14 is a diagram showing a processing procedure of the sealing construction management system.
Fig. 15 is a diagram showing a change in the detected axial force under fastening management.
Detailed Description
[ embodiment 1 ]
Fig. 1 shows a sealing work management apparatus according to embodiment 1. The configuration shown in fig. 1 is an example, and the present invention is not limited to this configuration.
The sealing work management device 2-1 is used for fastening a plurality of bolts 6 and nuts 8 that connect sealing work sections 4 of pipes, valves, pumps, and the like, and managing the fastening. The seal applying portion 4 is an example of a fastening target, and a gasket 12 is sandwiched between the flanges 10-1 and 10-2, and bolts 6 and nuts 8 are arranged at a plurality of fastening portions. In this example, the fastening portions of the flanges 10-1 and 10-2 are arranged at 8 positions on the peripheral edge, that is, 8 bolts 6 and nuts 8 are arranged at intervals of an angle θ of 45 °.
The sealing work management device 2-1 includes a fastening tool 14 and a control unit 16-1 thereof. The fastening tool 14 may be any tool that can generate the output torque T applied to the bolt 6 or the nut 8 and manage addition and subtraction of the output torque. In other words, a general electric tool such as a nut tightening machine can be used as the tightening tool 14.
In the fastening tool 14, the operator can apply the output torque T to the nut 8 at the fastening site by holding the device body 20 by gripping the handle 18 and pressing the trigger switch 24 after fitting the insertion hole 22 to the nut 8 at the fastening site.
The control unit 16-1 is an example of a control unit of the fastening tool 14, and is constituted by a computer, for example. The functions of the control unit 16-1 include the following functions:
a. calculating or selecting the torque value tau applied to the bolt 6 or the nut 8 according to the number of cycles N of the fastening site or the fastening site P
b. Setting a torque value τ for the fastening tool 14
c. The output torque T of the tightening tool 14 is changed in stages or continuously according to the number of cycles N or the tightening position P
In these functions a, b and c, the fastening position is a position where a fastening force is applied between the flanges 10-1 and 10-2, and in the above-described example, the bolt 6 or the nut 8 is disposed. The number N of cycles of the fastening portion P is the number of times per unit of the positions P1 and P2 … Pn passing through the bolt 6 and the nut 8.
The torque value τ is a torque set to achieve the target axial force Fe at the fastening site, and is a value to be applied to the bolt 6 or the nut 8 depending on the number of cycles N of the fastening site or the fastening site P. The torque value τ is a level value calculated to achieve the target axial force Fe using the fastening conditions including the spacer 12. Instead of calculating the torque value τ, the number of cycles N of the fastening portion or the fastening portion P may be selected from a database of the previously calculated torque values τ.
In b, the torque value τ is control information that the control unit 16-1 outputs to the fastening tool 14, and the torque value τ is set for the fastening tool 14 using the control information.
In step c, the control unit 16-1 changes the output torque T of the fastening tool 14 in a stepwise or continuous manner according to the number of cycles N or the fastening position P. Thereby, the axial force of the bolt 6 or the nut 8 at each fastening portion is brought to the target axial force Fe.
The circulation of the fastening portions may be sequentially circulated through the positions P1 and P2 … Pn as indicated by an arrow a in FIG. 2A, or may be circulated through the positions P1 and P2 … Pn so as to change the fastening portions in the radial direction of the flanges 10-1 and 10-2 as indicated by an arrow B in FIG. 2B. That is, the fastening portions may be changed for the positions P1 and P2 … Pn in the order of the numbers, or may be cycled so that a predetermined number of fastening portions are regularly skipped. Therefore, the number of cycles N is not limited to the count value of the cycles sequentially passing through the positions P1 and P2 … Pn, and may be a count value counted in units of cycles that are performed so as to skip a predetermined position.
Fig. 3 shows a process of sealing work management using the control unit 16-1.
This construction management is an example of a sealing construction management method, and includes steps (S101, S102, S103, S104, S105, S106) in which a plurality of fastening portions are set on the flanges 10-1, 10-2 sandwiching the gasket 12, and the bolts 6 and nuts 8 are arranged at the respective fastening portions and fastened.
In this seal construction management, a torque value τ applied to the bolt 6 or the nut 8 is calculated or selected from the number of cycles N of the fastening portion or the fastening portion P during the seal construction (before or during the construction) (S101).
The calculated or selected torque value τ is set for the fastening tool 14 by the control unit 16-1 (S102).
In the fastening operation of the fastening portion, it is determined whether or not the number of cycles N of the fastening portion or the fastening portion P is changed (S103). If the number of cycles N or the fastening site P of the fastening site is changed (yes in S103), the output torque T of the fastening tool 14 is changed in stages or continuously according to the number of cycles N or the fastening site P of the fastening site (S104). If the number of cycles N of the fastening portion or the fastening portion P is not changed (NO in S103), the current output torque T is maintained (S105).
Then, it is determined whether or not the axial force F of each fastening portion reaches the target axial force Fe (S106). If the axial force F of each fastening portion does not reach the target axial force Fe (NO in S106), the steps from S103 to S106 are repeated, and the output torque T is changed by repeating the setting of the torque value τ corresponding to the change in the number of cycles N of the fastening portion or the fastening portion P.
If the axial force F of each fastening portion reaches the target axial force Fe (YES in S106), the sealing work is completed.
The axial force F of each fastening portion may be detected from each bolt 6 by an axial force sensor, or may be calculated using a detection value of a torque sensor located on the fastening tool 14 side.
< effects of embodiment 1 >
(1) The sealing construction with high precision and reliability can be realized without depending on the skill and intuition of a constructor.
(2) The calculation and setting of the torque value τ and the detection of the output torque T can be performed in the same manner all the time, and sealing work with high reliability can be performed quickly.
(3) The sealing construction mistake of a constructor can be reduced, and the safety of the constructor is improved.
[ 2 nd embodiment ]
Fig. 4 a shows a sealing construction management system according to embodiment 2. In a of fig. 4, the same portions as those of fig. 1 are denoted by the same reference numerals. The configuration shown in a of fig. 4 is an example, and the present invention is not limited to this configuration.
The sealing work management system 2-2 includes a fastening tool 14, a control unit 16-2, and axial force sensors 26-1, 26-2 … 26-n. Since the fastening tool 14 has the same structure as that described above, the description thereof will be omitted.
The control unit 16-2 is an example of a control unit of the fastening tool 14, and is constituted by a computer, for example. The control unit 16-2 controls the fastening tool 14 in the same manner as the control unit 16-1 (fig. 1), but differs from the control unit 16-1 in that the detected axial force of the axial force sensors 26-1, 26-2 … 26-n is used for the control. The axial force sensors 26-1 and 26-2 … 26-n are examples of axial force detection means for detecting the axial force of each bolt 6 in the seal applied part 4. In this example, the axial force sensors 26-1 and 26-2 … 26-8 are disposed on 8 bolts 6, respectively, and each detected axial force is introduced into the control unit 16-2. The control unit 16-2 uses the detected axial force F for comparison information on whether or not the detected axial force F reaches the target axial force Fe, specific information on the fastening portion, cycle information on the fastening portion, and the like.
As shown in fig. 4B, the control unit 16-2 implements the 1 st, 2 nd, and 3 rd functions 28, 30, and 32. In function 28, the torque value τ applied to the bolt 6 or the nut 8 is calculated or selected based on the number of cycles N or the fastening point P of the fastening point. In function 30, a torque value τ is set for the fastening tool 14. Then, in the function 32, the output torque T of the fastening tool 14 is changed or maintained in stages or continuously according to the cycle number N or the fastening position P.
Fig. 5 shows a processing sequence of the sealing work management system 2-2.
During the sealing operation, the tightening tool 14 is initially set (S201), and the control unit 16-2 is initially set (S202). The axial force sensors 26-1 and 26-2 … 26-n detect the axial force of the bolts 6 (S203), and the control unit 16-2 introduces the detected axial force (S204). The control unit 16-2 determines the number of cycles N of the fastening site P or the fastening site P (S205). In this case, each fastening site P can be specified by the number of 8 bolts 6 located at 8 sites from among the fastening sites P1 to P8 and the change in the detected axial force, and the cycle number N can be specified by the number of times the same bolt 6 is fastened in cycles, for example, in units of 8 bolts 6.
The control unit 16-2 calculates a torque value τ applied to the bolt 6 or the nut 8 from the cycle number N of the fastening portion P or the fastening portion P (S206). In this calculation, the torque value τ 0 is calculated for the cycle number N of 0, the torque value τ 1 is calculated for the cycle number N of 1, and the torque value τ 2 … is calculated for the cycle number N of 2, with reference to the selected fastening conditions of the gasket 12 and the like. In this case, the torque value τ corresponding to the cycle number N may be selected from the torque values τ 0, τ 1, τ 2 … calculated in advance.
The control unit 16-2 supplies and sets the torque value τ to the fastening tool 14 (S207). The fastening tool 14 generates an output torque T from the torque value τ. Thereby, the output torque T is changed or maintained in stages or continuously according to the number of fastening cycles N or the fastening position P (S208).
Then, the operator applies the output torque T to the bolt 6 or the nut 8 at the fastening positions P1 to P8 by using the fastening tool 14 to fasten the bolt (S209). The axial force sensors 26-1 and 26-2 … 26-8 detect the axial force of the bolt 6 at the fastening points P1 to P8 (S210), and the detected axial force is introduced into the control unit 16-2 (S211).
The control unit 16-2 determines whether or not each detected axial force reaches the target axial force (S212). If each detected axial force F does not reach the target axial force Fe (no in S212), the process returns to S205, and the processes from S205 to S212 are repeated.
If each of the detected axial forces F reaches the target axial force Fe (yes at S212), the tightening is completed (S213), and the tightening tool 14 is notified to complete the tightening. The completion of the fastening can be informed using a display device.
< effects of embodiment 2 >
(1) The axial force F of the bolt 6 can be quickly brought to the target axial force Fe by calculating the torque value τ from the number of cycles N of the fastening portion and the fastening portion P, setting the torque value τ from the number of cycles of the fastening portion and the fastening portion, and continuously or stepwise changing the output torque T from the number of cycles of the fastening portion and the fastening portion.
(2) Since the output torque T applied to the bolt 6 from the fastening tool 14 can be captured and monitored from each bolt 6 by the detection axial force F, sealing work with reliability can be realized.
(3) It is possible to obtain an appropriate axial force as a target axial force without generating an insufficient or excessive axial force.
(4) The cycle of the fastening portion may be performed not only in the order of the bolt numbers but also in various manners of skipping the bolt numbers, and appropriate sealing work can be performed quickly regardless of which fastening cycle is used.
[ embodiment 3 ]
Fig. 6 shows a sealing work management apparatus according to embodiment 3. In fig. 6, the same parts as those in fig. 1 are denoted by the same reference numerals. The configuration shown in fig. 6 is an example, and the present invention is not limited to this configuration.
The sealing work management device 2-3 includes a fastening tool 14, a control unit 16-3, and a fastening condition setting unit 34. Since the fastening tool 14 has the same structure as the sealing work managing apparatus 2-1, the description thereof is omitted.
The tightening condition setting unit 34 is an example of a tightening condition, and sets the number of cycles N of the tightening site P or the tightening site P. The control unit 16-3 controls the calculation or selection of the torque value τ and the output torque T of the fastening tool 14 based on the number of cycles N of the fastening site P or the fastening site P set by the fastening condition setting unit 34. In this way, the function of the control unit 16-1 of embodiment 1 can be realized by the control unit 16-3 and the tightening condition setting unit 34.
As in embodiment 3, even with the configuration in which the number of cycles N of the fastening site P or the fastening site P is set by using the fastening condition setting unit 34, the same effects as those of the above-described embodiments can be obtained.
Examples
Fig. 7 shows a sealing construction management system of the embodiment. The configuration shown in fig. 7 is an example, and the present invention is not limited to this configuration.
The sealing work management system 2-4 includes a fastening tool 14, a controller 16-4, and a server computer (hereinafter, simply referred to as a "server") 16-5. Since the fastening tool 14 has the same structure as that described above, the description thereof will be omitted.
The controller 16-4 is connected to the fastening tool 14 by wire or wirelessly, in this example, by a cable 36 to the fastening tool 14. The controller 16-4 is constituted by, for example, a computer alone or in conjunction with the server 16-5. Instead of the connection of the cable 36, a Wi-Fi connection or the like may be used as an example of a wireless connection. The front surface panel 38 of the controller 16-4 includes a plurality of input operation units 40 and a display unit 42.
The controller 16-4 implements the following processes and functions by computer processing:
a. calculating or selecting the torque value tau applied to the bolt 6 or the nut 8 according to the number of cycles N of the fastening site or the fastening site P
b. Setting a torque value τ for the fastening tool 14
c. The output torque T of the tightening tool 14 is changed in stages or continuously according to the number of cycles N or the tightening position P
d. Obtaining fastening management information from server 16-5
e. Obtaining flange information of flanges 10-1 and 10-2
f. Obtaining pad information of a pad 12
g. Contrasting gasket information
h. The fastening condition is selected from the fastening condition information and inputted into the fastening tool 14
i. Information for prompting fastening result
j. Evaluation information for presenting fastening result
The controller 16-4 is operatively coupled to the server 16-5 via wired or wireless means as a communication medium 44 shown by dashed lines. The server 16-5 is a computer that assists in information processing of the controller 16-4 or manages the information processing, and a personal computer, for example, may be used. For example, the server 16-5 includes a processing unit 46, an input operation unit 48, and a monitor 50.
< fastening tool 14 >
Fig. 8 a shows an example of hardware of the fastening tool 14. The fastening tool 14 includes a control unit 52, a motor 54, and a torque sensor 56, as in a general electric power tool.
The control unit 52 includes a computer and a motor drive unit, and the controller 16-4 supplies control information such as the torque value τ. The motor 54 is driven in accordance with the fastening information such as the torque value τ, and when the trigger switch 24 is turned on, a drive current is supplied to the motor 54.
The rotation of the motor 54 is transmitted to the insertion hole 22 attached to the rotary shaft 58, and the output torque T is applied to the nut 8 fitted into the insertion hole 22. The rotary shaft 58 is provided with a gear mechanism, and can transmit the rotational force of the motor 54 to the insertion hole 22 at a desired gear ratio.
The torque sensor 56 detects the output torque T from the motor 54 or the rotary shaft 58, and the detected torque is introduced into the control unit 52. The torque sensor 56 may be provided outside the fastening tool 14 as long as it can detect the fastening torque of the bolt 6 and the nut 8.
Fig. 8B shows an example of the bolt 6 provided with the axial force sensor 26. Each bolt 6 is provided with an axial force sensor 26, and by detecting the axial force F applied to each bolt 6, the value of the output torque T of the fastening tool 14 and the increase or decrease in the value of the output torque T can be measured. The axial force sensor 26 may use, for example, a deformation sensor.
< controller 16-4>
Fig. 9 a shows an example of the controller 16-4. The controller 16-4 is a control unit of the fastening tool 14, and is an example of a sealing construction managing apparatus for sealing fastening.
The controller 16-4 is configured by, for example, a computer, and includes a processor 60, a storage unit 62, an input/output unit (I/O) 64, an input operation unit 40, a communication unit 68, and a display unit 42.
The processor 60 is an example of a processing unit, and performs information processing by using an OS, a seal construction management program, and the like in the storage unit 62. The information processing includes the following controls: obtaining fastening condition information from the server 16-5, inputting fastening conditions including the torque value τ into the fastening tool 14, obtaining output torque T from the fastening tool 14, monitoring and evaluating the fastening state, displaying the evaluation result, outputting fastening result information, and the like.
The storage unit 62 is used for storing OS, seal construction management program, fastening condition information, detection information, and the like, and includes ROM and RAM. As the storage unit 62, a storage element capable of holding storage contents can be used.
The I/O64 is controlled by the processor 60 for controlling input/output of information. To the I/O64, for example, a bar code reader 72 or a removable external memory 74 as an external device is connected. The barcode reader 72 is an example of an information acquisition unit. The external memory 74 is a memory for retrieving log information, and for example, a USB (Universal Serial Bus) memory may be used.
The input operation unit 40 includes a key switch, a touch sensor, and the like, and is used for input timing determination of input information, output timing determination of output information, mode switching, and the like.
The communication section 68 is controlled by the processor 60 for wireless connection or internet connection with an external device such as the server 16-5.
The display unit 42 is controlled by the processor 60, and is an example of presentation means for inputting and outputting information. The display unit 42 includes, for example, a green light 76-1, a red light 76-2, and the like as display means of status information. The green light 76-1 is lighted in a normal state, and the red light 76-2 is lighted in an abnormal state.
Fig. 9B shows an example of the storage content of the storage unit 62. The storage unit 62 includes a temporary storage area 78-1 and a storage area 78-2. The temporary storage area 78-1 temporarily stores flange information 80, pad information 82, operator information 84, fastening result information 86 obtained from the fastening tool 14, and the like.
A database such as a fastening condition table 88, a torque value table 90-1, 90-2, etc. is constructed in the storage area 78-2. The fastening condition information associated with the flanges 10-1, 10-2 is recorded in the fastening condition table 88. The torque value tables 90-1 and 90-2 store torque value information such as the number of cycles N and the torque value τ, which are different in cycle type.
< Server 16-5 >
Fig. 10 shows an example of the server 16-5. The server 16-5 is an auxiliary device of the controller 16-4, and is an example of a presentation unit of log information.
The processing unit 46 of the server 16-5 includes the processor 92, the storage unit 94, the input/output unit (I/O)96, and the communication unit 98, and the server 16-5 includes the input operation unit 48 and the monitor 50 described above.
The processor 92 performs information processing using an OS, a seal construction management program, and the like in the storage unit 94. The information processing includes processing of providing the controller 16-4 with fastening condition information, acquiring information indicating the fastening result from the controller 16-4, and presenting the fastening result information.
The storage unit 94 is used for storing OS, seal construction management program, fastening condition information, log information, and the like, and includes ROM and RAM. As the storage unit 94, a storage device such as a hard disk or a semiconductor memory capable of holding a storage content can be used.
The I/O96 is controlled by the processor 92 for controlling input/output of information. The communication unit 98 is used to wirelessly connect to the controller 16-4 and the like, for example. An external memory 100 as an external device is connected to the I/O96, for example.
The communication section 98 is controlled by the processor 92 for wireless and internet connection with external devices such as the fastening tool 14, the controller 16-4, and the like.
The input operation unit 48 is used for inputting input information, determining timing for extracting output information, switching modes, and the like.
The monitor 50 is an example of an information presentation unit and a display unit, and is used for displaying, for example, a fastening condition table 88 and torque value tables 90-1 and 90-2. The screen display unit of the monitor 50 includes a touch panel 102 that can input information corresponding to display information in place of the input operation unit 48.
< fastening conditions Table 88>
Fig. 11 shows an example of the fastening condition table 88. The fastening condition table 88 stores fastening condition information, and is provided from the server 16-5 to the controller 16-4. The fastening condition table 88 includes, as examples of fastening condition information, application site information, flange information 80, pad information 82, fastening result information 86, and the like. The application location information is information such as an implementation line. The flange information 80 is independent information for identification of the flanges 10-1, 10-2. The pad information 82 is independent information for identification of the pads 12. In the fastening condition, link information linked to the torque value tables 90-1, 90-2 is stored, and the torque value tables 90-1, 90-2 store the torque value τ, the number of cycles N, and the like as the torque value information.
As shown in fig. 11, the fastening condition table 88 includes a line information portion 104, a flange information portion 106, a pad information portion 108, a bolt information portion 110, and a fastening condition information portion 112.
The line information unit 104 stores identification information of fastening portions such as the piping lines such as LineA and LineB …. The flange information section 106 stores flange numbers and flange sizes for identifying the flanges 10-1 and 10-2. The pad information section 108 stores a pad product number, a pad size, and the like for identifying the pad 12. The bolt information portion 110 stores the number of bolts and the like. The fastening condition information section 112 stores a fastening condition number or the like for identifying the fastening condition.
Since the server 16-5 provides the fastening condition table 88 as the fastening condition information, the controller 16-4 can grasp the necessary fastening condition information relating to fastening between the server 16-5 and can flexibly use the fastening condition information independently.
< Torque value Table 90-1, 90-2 >)
The twist value table 90-1 shown in fig. 12 corresponds to the above-described cycle pattern shown in a of fig. 2. The torque value table 90-1 stores the number of cycles N (═ 0, 2 … N) of the fastening site P and the torque value τ (═ τ 01, τ 02 … τ nn) of the fastening site P (═ P1, P2 … Pn). These torque values τ are calculated from the number of cycles N (0, 2 … N) based on the flanges 10-1 and 10-2 and the gasket 12 to be fastened, and stored. Each value may be calculated at the time of seal construction, or the calculated value may be stored in advance and selected.
The torque value table 90-2 shown in fig. 13 corresponds to the sealing operation in the case where the above-described circulation method shown in B of fig. 2 is advanced. In the torque value table 90-2, when the number N of cycles of the fastening portion P is less than 1(N < 1), the torque value τ (═ τ 01, τ 02 … τ nn) of the fastening portion P (═ P1, P2 … Pn) determined from the angle θ of the fastening portion P is stored. The same torque value τ as the torque value table 90-1 shown in fig. 12 is calculated from the cycle number N (═ 2 … N) as a torque value after one cycle fastening (N ═ 1) is performed, and stored. Each value may be calculated at the time of seal construction, or the calculated value may be stored in advance and selected, as in the case of the torque value table 90-1.
< processing procedure for sealing construction management >
Fig. 14 shows a processing sequence of the sealing work management system 2-4.
When the seal construction is performed, the initial setting of the fastening tool 14 is performed (S301), and the initial setting of the controller 16-4 is performed (S302). After the initial setting, the controller 16-4 is linked with the server 16-5, and the fastening condition information provided by the server 16-5 is introduced into the controller 16-4 (S303). The introduction of the fastening condition information is realized by obtaining the fastening condition table 88 and the torque value tables 90-1 and 90-2.
The controller 16-4 having acquired the fastening condition information selects the fastening condition corresponding to the preselected flanges 10-1 and 10-2 and the gasket 12 (S304). The fastening condition may be selected by calculating the torque value τ in advance, and may include a process of selecting the value. Thus, after the preparatory process of fastening, the controller 16-4 is interlocked with the respective axial force sensors 26-1, 26-2 … 26-n, the respective axial force sensors 26-1, 26-2 … 26-n detect the axial force of the respective bolts 6 (S305), and the controller 16-4 introduces the respective detected axial forces (S306).
The controller 16-4 determines the number of cycles N of the fastening portion P or the fastening portion P using each detected axial force (S307). That is, for example, since the fastening site P is 8 sites, it is possible to determine which of the fastening sites P1 to P8 is based on the number of 8 bolts 6 and the change in the axial force, and as described above, it is possible to determine whether the cycle number N is 0 or N by setting the cycle number to 1 when a plurality of bolts 6 selected from the fastening sites P1 to P8 are fastened once for the cycle number N.
The controller 16-4 calculates the torque value τ applied to the bolt 6 or the nut 8 based on the cycle number N of the fastening portion P or the fastening portion P (S308). In this calculation, the torque values τ 01 and τ 02 … are calculated for the cycle number N of 0, the torque values τ 11 and τ 12 … are calculated for the cycle number N of 1, and the torque values τ 21 and τ 22 … are calculated for the cycle number N of 2, with reference to the selected fastening conditions of the gasket 12 and the like. In this case, the torque value τ corresponding to the cycle number N may be selected from the torque values τ 0, τ 01, τ 02 … τ nn calculated in advance.
The torque value τ is supplied to the fastening tool 14 by the controller 16-4 and set (S309). The fastening tool 14 generates an output torque T from the torque value τ. Thus, the output torque T is changed or maintained in stages or continuously according to the number of cycles N of the fastening portion P or the fastening portion P (S310).
Then, the operator applies an output torque T to the bolt 6 or the nut 8 at the fastening site with the fastening tool 14 to fasten the bolt (S311). The axial force sensors 26-1 and 26-2 … 26-n detect the axial force of the bolt 6 at each fastening point P (S312), and the detected axial force F is introduced into the controller 16-4 (S313).
The controller 16-4 determines whether each detected axial force F reaches the target axial force Fe (S314). If each of the detected axial forces F does not reach the target axial force Fe (no in S314), the process returns to S307, and the processes from S307 to S313 are repeated.
If each of the detected axial forces F reaches the target axial force Fe (yes at S314), the fastening is completed (S315), and each of the detected axial forces F is input to the fastening tool 14, completing the fastening. A display device, such as a monitor 50, may be used to indicate that the fastening is complete.
In the present embodiment, after the fastening is finished, fastening result information is imported from the fastening tool 14 to the controller 16-4 (S316), and the fastening result information is provided from the controller 16-4 to the server 16-5. After receiving the fastening result information, the server 16-5 displays the fastening result information (S317). In this display, the builder information and the fastening evaluation information may be included.
This processing step may include the following processing.
a) The flanges 10-1 and 10-2 are provided with flange labels each indicating flange information by a barcode, and the flange information may be acquired from the flange labels by using the barcode reader 72, or the gasket information may be acquired from the gasket labels indicated by the barcode on the gasket 12, and the gasket information may be referred to as fastening condition information.
b) It is possible to judge whether or not the acquired flange information and gasket information match the fastening information, and to display whether or not the information is proper.
c) The identification information and skill information of the constructor may be acquired from an ID card held by the constructor, and the constructor information may be reflected in the fastening result information.
< sealing construction Using fastening management >
Fig. 15 shows a change in the detected axial force under the above-described tightening management. In A, B, C of fig. 15, coordinate axes y are set radially from the center O corresponding to the fastening point P (P1 to P8), and an axial force is applied in a direction away from the coordinate axes from the center O. F is the detection axial force, and Fe is the target axial force. In this example, the case where the target axial force Fe is reached by the cycle number N being 3 is shown.
When the number of cycles of the fastening site P is set to N1 and the axial force F is set to 30 (%) of the target axial force Fe (F is 0.3Fe), as shown in a of fig. 15, each detected axial force F of the fastening site P (P1 to P8) can be obtained as an example. Even if the same axial force is set, the change in the detected axial force F is observed due to the influence of the elastic interaction of the flanges 10-1, 10-2, and the polygon formed by the detected axial forces F is slightly deformed.
When the number of cycles of the fastening site P is set to N of 2 and the axial force F is set to 70 (%) of the target axial force Fe (F of 0.7Fe), as shown in B of fig. 15, each detected axial force F of each fastening site P (P1 to P8) is obtained.
When the number of cycles of the fastening site P is set to N ═ 3 and the axial force F is set to 100 (%) of the target axial force Fe (F ═ Fe), as shown in C of fig. 15, the detected axial force F of each fastening site P (═ P1 to P8) is obtained, and the target axial force Fe can be achieved.
< effects of the embodiment >
(1) Since the appropriate fastening condition is automatically selected from the fastening condition information, it is not necessary to manage the fastening condition by the operator, and the burden on the operator can be reduced by setting the fastening condition. The fastening condition setting can be avoided depending on the experience and intuition of the worker, automation can be realized, and complicated work based on written instructions and input errors and fastening errors caused by written instructions can be avoided.
(2) Since the fastening condition can be individually and specifically provided from the server 16-5 to the controller 16-4, a generalized work such as fastening all bolts with the same torque can be avoided, so that an accurate fastening result can be achieved. Torque management provided by the fastening condition information and capable of reliably and efficiently fastening each bolt to be fastened by different torques τ can be performed with high accuracy. Sealing construction management with accuracy far higher than management depending on the individuality and intuition of the operator can be realized.
(3) The sealing construction can be automated, highly accurate, simplified, and highly efficient by using a fastening tool capable of performing fastening management and processing information using a computer, and sealing construction with high reliability can be performed without depending on the experience and intuition of an operator.
[ other embodiments ]
(1) In the above embodiment, the following configuration may be adopted: the torque value tau is increased or decreased using the detected axial force of each of the axial force sensors 26-1, 26-2 … 26-n, and each of the axial force sensors 26-1, 26-2 … 26-n detects the axial force of the bolt 6 to which the output torque T is applied from the fastening tool 14. That is, the sealing construction management method may include the steps of: detecting an axial force of the bolt 6 to which the output torque T is applied from the fastening tool 14; and increasing or decreasing the torque value τ or the output torque T according to each detected shaft force.
(2) In the above-described embodiments and examples, the controller 16-4 and the server 16-5 are described as independent devices, but the controller 16-4 may also have the function of the server 16-5. That is, the controller 16-4 and the server 16-5 may be integrally formed.
(3) A portable information terminal such as a smartphone may be used as the controller 16-4.
(4) In the above-described embodiment and example, the controller 16-4 and the server 16-5 are set for one fastening tool 14, but the controller 16-4 and the server 16-5 may be set for a plurality of fastening tools 14, or a single server 16-5 may be provided for a plurality of controllers 16-4.
As described above, the most preferable embodiments and examples of the present invention are 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 embodiments described in the claims or the mode for carrying out the invention or the gist of the invention disclosed in the embodiments. Such modifications and variations are, of course, included in the scope of the present invention.
Industrial applicability
The sealing construction management method, the sealing construction management device, the sealing construction management program, and the sealing construction management system according to the present invention are advantageous in that the automation, high accuracy, simplification, and high efficiency of the sealing construction can be realized by using a fastening tool capable of performing fastening management, and by applying information processing of a computer, and the sealing construction with high reliability can be realized without depending on the experience and intuition of an operator.
Description of the reference symbols
2-1: a sealing construction management device;
2-2: a sealing construction management system;
2-3: a sealing construction management device;
2-4: a sealing construction management system;
4: sealing the construction part;
6: a bolt;
8: a nut;
10-1, 10-2: a flange;
12: a gasket;
14: a fastening tool;
16-1, 16-2, 16-3: a control unit;
16-4: a controller;
16-5: a server;
18: a handle;
20: a device main body;
22: a jack;
24: a trigger switch;
26-1, 26-2 … 26-n: an axial force sensor;
28: function No. 1;
30: function No. 2;
32: a 3 rd function;
34: a fastening condition setting unit;
36: a cable;
38: a front surface panel portion;
40: an input operation unit;
42: a display unit;
44: a communication medium;
46: a processing unit;
48: an input operation unit;
50: monitor with a display
52: a control unit;
54: a motor;
56: a torque sensor;
58: a rotating shaft;
60: a processor;
62: a storage unit;
64: an input/output unit;
68: a communication unit;
72: a bar code reader;
74: an external memory;
76-1: a green light;
76-2: a red light;
78-1: a temporary storage area;
78-2: a storage area;
80: flange information;
82: pad information;
84: operator information;
86: fastening result information;
88: a fastening condition table;
90-1, 90-2: a torque value table;
92: a processor;
94: a storage unit;
96: an input/output (I/O) unit;
98: a communication unit;
100: an external memory;
102: a touch panel;
104: a line information section;
106: a flange information section;
108: a pad information section;
110: a bolt information section;
112: and a fastening condition information section.
Claims (7)
1. A sealing construction management method for setting a plurality of fastening portions on a flange sandwiching a gasket, and arranging and fastening a bolt and a nut at each fastening portion, the sealing construction management method comprising the steps of:
detecting the axial force of the bolt;
determining whether the number of cycles of the fastening portion or the fastening portion during fastening is changed, using information on the detected change in the axial force and information identifying the bolt;
calculating or selecting a value of torque applied to the bolt or the nut according to the changed number of cycles or fastening portion when the number of cycles of the fastening portion or the fastening portion in fastening is changed;
setting the torque value for a fastening tool; and
the output torque of the fastening tool is changed stepwise or continuously in accordance with the number of cycles or the fastening position.
2. The sealing construction management method according to claim 1,
the method further includes a step of setting the number of cycles of the fastening portion or the fastening portion for the fastening tool.
3. A sealing construction management device that sets a plurality of fastening portions on a flange sandwiching a gasket, and that arranges and fastens a bolt and a nut at each fastening portion, the sealing construction management device comprising:
an axial force sensor that detects an axial force of the bolt; and
and a control unit that determines whether or not the number of cycles of the fastening portion or the fastening portion during fastening has been changed, using information identifying the bolt and information indicating a change in the axial force detected by the axial force sensor, calculates or selects a torque value to be applied to the bolt or the nut, based on the number of cycles after the change or the fastening portion, sets the torque value for a fastening tool, and changes an output torque of the fastening tool in stages or continuously, based on the number of cycles or the fastening portion, when the number of cycles of the fastening portion or the fastening portion during fastening has been changed.
4. The sealing construction management apparatus according to claim 3,
the tightening device is provided with a setting means for setting the number of cycles of the tightening portion or the tightening portion for the tightening tool.
5. The sealing construction management apparatus according to claim 3 or 4,
the control unit is disposed within the fastening tool or separately from the fastening tool and is connected to the fastening tool in a wired or wireless manner.
6. A storage medium storing a sealing construction management program, the sealing construction management program being a program for execution by a computer, the sealing construction management program being for realizing, by the computer, functions of:
introducing information of axial force of bolts arranged at a plurality of fastening portions set on flanges sandwiching a gasket;
determining whether the number of cycles of the fastening portion or the fastening portion during fastening is changed, using the change information of the axial force and the information for identifying the bolt;
calculating or selecting a value of torque applied to the bolt or nut according to the changed number of cycles or fastening portion when the number of cycles of the fastening portion or the fastening portion in fastening is changed;
setting the torque value for a fastening tool; and
the output torque of the fastening tool is changed stepwise or continuously in accordance with the number of cycles or the fastening position.
7. A sealing construction management system in which a plurality of fastening portions are set on a flange sandwiching a gasket, and a bolt and a nut are disposed at each fastening portion and fastened, the sealing construction management system comprising:
an axial force sensor that detects an axial force of the bolt;
a fastening tool capable of controlling an output torque applied to the bolt or the nut in stages or continuously; and
and a controller connected to the fastening tool by wire or wirelessly, determining whether or not the number of cycles of the fastening portion or the fastening portion during fastening has been changed, using information on a change in the detected axial force and information identifying the bolt, calculating or selecting a torque value to be applied to the bolt or the nut based on the number of cycles or the fastening portion after the change when the number of cycles of the fastening portion or the fastening portion during fastening has been changed, setting the torque value for the fastening tool, and changing an output torque of the fastening tool in stages or continuously based on the number of cycles or the fastening portion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-071724 | 2017-03-31 | ||
| JP2017071724 | 2017-03-31 | ||
| PCT/JP2018/006411 WO2018180055A1 (en) | 2017-03-31 | 2018-02-22 | Seal construction management method, seal construction management device, seal construction management program, and seal construction management system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110461549A CN110461549A (en) | 2019-11-15 |
| CN110461549B true CN110461549B (en) | 2021-11-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880021158.3A Active CN110461549B (en) | 2017-03-31 | 2018-02-22 | Sealing construction management method, sealing construction management device, sealing construction management program, and sealing construction management system |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JP7071960B2 (en) |
| KR (1) | KR102418067B1 (en) |
| CN (1) | CN110461549B (en) |
| SG (1) | SG11201908153TA (en) |
| TW (1) | TWI761460B (en) |
| WO (1) | WO2018180055A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102679751B1 (en) * | 2022-11-02 | 2024-07-01 | 삼성물산 주식회사 | Electric tightening tool |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09141565A (en) * | 1995-11-24 | 1997-06-03 | Tadahiro Omi | Fastening device |
| CN1343158A (en) * | 1999-03-16 | 2002-04-03 | 株式会社空研 | Reading method of screw rotation angle of hand-held impact wrench, hand-vibration detection method, tighteming evaluation method and control method of hand-held power screw loosensing tool |
| JP2013151043A (en) * | 2012-01-25 | 2013-08-08 | Honda Motor Co Ltd | Tightening torque management system |
| JP2015141345A (en) * | 2014-01-29 | 2015-08-03 | 日本バルカー工業株式会社 | Flange fastening training system |
| JP2015208822A (en) * | 2014-04-28 | 2015-11-24 | 株式会社日立プラントコンストラクション | Torque fastening management system and torque fastening management method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW330169B (en) * | 1995-11-24 | 1998-04-21 | Fujikin Kk | A method of tightening threaded members |
| JP3456949B2 (en) * | 2000-06-19 | 2003-10-14 | 株式会社エスティック | Method and apparatus for controlling screw tightening device |
| JP2002239939A (en) * | 2001-02-19 | 2002-08-28 | Hitachi Engineering & Services Co Ltd | Tightening torque controller for bolt |
| JP4671518B2 (en) * | 2001-03-12 | 2011-04-20 | 一弘 渡辺 | Screw tightening monitoring system |
| JP4351891B2 (en) * | 2003-10-16 | 2009-10-28 | 株式会社東日製作所 | Fastening management system for fastening members |
| JP6752594B2 (en) * | 2016-03-10 | 2020-09-09 | 株式会社バルカー | Construction monitoring device for sealing materials, construction monitoring program, construction monitoring method, construction monitoring system and construction training system |
-
2018
- 2018-02-22 WO PCT/JP2018/006411 patent/WO2018180055A1/en active Application Filing
- 2018-02-22 KR KR1020197025596A patent/KR102418067B1/en active IP Right Grant
- 2018-02-22 CN CN201880021158.3A patent/CN110461549B/en active Active
- 2018-02-22 SG SG11201908153T patent/SG11201908153TA/en unknown
- 2018-02-22 JP JP2019508789A patent/JP7071960B2/en active Active
- 2018-02-22 TW TW107105974A patent/TWI761460B/en active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09141565A (en) * | 1995-11-24 | 1997-06-03 | Tadahiro Omi | Fastening device |
| CN1343158A (en) * | 1999-03-16 | 2002-04-03 | 株式会社空研 | Reading method of screw rotation angle of hand-held impact wrench, hand-vibration detection method, tighteming evaluation method and control method of hand-held power screw loosensing tool |
| JP2013151043A (en) * | 2012-01-25 | 2013-08-08 | Honda Motor Co Ltd | Tightening torque management system |
| JP2015141345A (en) * | 2014-01-29 | 2015-08-03 | 日本バルカー工業株式会社 | Flange fastening training system |
| JP2015208822A (en) * | 2014-04-28 | 2015-11-24 | 株式会社日立プラントコンストラクション | Torque fastening management system and torque fastening management method |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201837358A (en) | 2018-10-16 |
| CN110461549A (en) | 2019-11-15 |
| SG11201908153TA (en) | 2019-10-30 |
| JPWO2018180055A1 (en) | 2020-02-06 |
| WO2018180055A1 (en) | 2018-10-04 |
| TWI761460B (en) | 2022-04-21 |
| JP7071960B2 (en) | 2022-05-19 |
| KR20190128635A (en) | 2019-11-18 |
| KR102418067B1 (en) | 2022-07-07 |
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