CN103353292A - Automatic measurement apparatus for stretching amount of integrated bolt stretcher - Google Patents
Automatic measurement apparatus for stretching amount of integrated bolt stretcher Download PDFInfo
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- CN103353292A CN103353292A CN201310321439XA CN201310321439A CN103353292A CN 103353292 A CN103353292 A CN 103353292A CN 201310321439X A CN201310321439X A CN 201310321439XA CN 201310321439 A CN201310321439 A CN 201310321439A CN 103353292 A CN103353292 A CN 103353292A
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Abstract
The invention relates to the field of the mechanical-electrical integration technology, particularly to an automatic measurement apparatus. The technical scheme is characterized in that the automatic measurement apparatus comprises an execution device and a controlling device. The controlling device controls the execution device according to a set program, thereby realizing measurement on the stretching amount of the bolt stretcher. Precise, efficient, secure and automatic measurement on the stretching amount of the bolt is realized in the limited and narrow space; residence time of the personnel in the radiation environment is shortened and the radiation dosages received by the personnel can be reduced; and thus the health of the operating personnel is protected. Meanwhile, the provided technology can be transplanted to automatic measurement in other severe environments, thereby filling the technical blank of the country in this aspect.
Description
Technical field
The invention belongs to electromechanical integration technology area, be specifically related to a kind of self-operated measuring unit.
Background technology
Whole bolt stretching machine is the special electromechanical integration apparatus of nuclear power station switch pressure vessels top cover, it is by the bottom of locking kingbolt, and by hydraulic power the top is elongated, thereby make kingbolt produce elastic deformation and produce pretightning force, in the whole process of hydraulic tensioning, need to rely on all the time the amount of tension measuring system that the elongation of kingbolt is monitored, and with the data transmission of elongation to control desk.Existing elongation measurement mechanism is to be placed on the back up pad in the workbench outside obsolete the time, relies on the magnet adsorption of elongation measurement mechanism bottom on back up pad, firmly deposits, and has 58 covers, corresponding 58 kingbolts.In use, need operating personnel manually the elongation measurement mechanism to be extracted from back up pad, lay out from the workbench outside, descending is put on the kingbolt.The support of elongation measurement mechanism contacts with the kingbolt top surface.The push rod of elongation measurement mechanism contacts with the core bar of kingbolt inside.When being stretched according to kingbolt, the inner core pole length is constant, produces the principle of a range difference, realizes the measurement of kingbolt elongation.
Because place, measuring position environment has certain radiation, and the number of meter is more, will cause operating personnel to be detained the long period iff artificial placement, thereby increase operating personnel's radiation dose in radiation environment, cause damage to healthy.Application number is that 201310010466.5 Chinese patent application discloses a kind of changes of magnetic field of utilizing magnetic head to measure the magnetocrystalline lattice of piston rod when flexible, the lead lag relationship of analysis of magnetic field signal and change frequency alternately, draw the method for flexible direction and elongation, what this measuring method adopted is electromagnetic principle, under nuclear radiation environment, performance to electromagnetic product can disturb, in addition its designed mechanical hook-up can't be fixed on measuring junction automatically, thereby can't reach the purpose of automatic measurement.
Summary of the invention
The objective of the invention is: for remedying the deficiencies in the prior art, provide a kind of can self-operated measuring unit, in limited narrow space, realize the automatic measurement to whole bolt stretching machine amount of tension.
Technical scheme of the present invention is: a kind of whole bolt stretching machine amount of tension self-operated measuring unit, and it comprises: actuating unit and control device; Wherein,
Actuating unit comprises: fixed head, semi-girder, coiling cap, limit switch A, limit switch B, joint motor A, shutdown motor B, carriage, adapter and meter;
Fixed head is the L-type structure, and its horizontal component is provided with through hole, and the vertical portion is arranged with mounting hole, and the upper surface of horizontal component also has gear block;
The surface of semi-girder is provided with three through holes in left, center, right, and the end face in the left side of semi-girder is provided with limited block;
Carriage is installed in the lower surface of fixed head, and its bottom is provided with U-shaped groove;
Limit switch A is installed in the upper surface of fixed head;
Limit switch B is installed on the carriage, and its contact is higher than the upper surface of fixed head;
Joint motor A is fixedly mounted on the lower surface of fixed head, and its output shaft passes the through hole on the fixed head, and semi-girder is fixedly connected with the output shaft of joint motor A by the through hole in its left side;
Shutdown motor B is fixedly mounted on the lower surface of semi-girder, and its output shaft passes the middle through hole of semi-girder and is fixedly connected with the coiling cap;
The through hole that cotton rope on the coiling cap passes the semi-girder right side is connected with adapter;
Meter is installed on the adapter;
When semi-girder rotates, can be respectively come in contact with the contact of limit switch A, limit switch B;
Control device comprises: industrial computer, FPGA, data conversion module A, data conversion module B, electric current amplification module A, electric current amplification module B, current detection module A and current detection module B;
Write the execution fixed routine in the FPGA, industrial computer is used for showing the measurement data from meter;
Industrial computer is connected with data conversion module A by the CAN data bus; Data conversion module A is connected with FPGA; Meter is connected to FPGA by data conversion module B; The output signal of FPGA divides two-way to connect respectively electric current amplification module A and electric current amplification module B; Electric current amplification module A connects the joint motor A in the actuating unit, and electric current amplification module B connects the joint motor B in the actuating unit; Current detection module A is connected with joint motor A and FPGA, and current detection module B is connected with joint motor B and FPGA;
Limit switch A links to each other with FPGA with limit switch B, when the contact of limit switch A or limit switch B is touched, sends the signal that stops joint motor A to FPGA.
The invention has the beneficial effects as follows: (1) in limited narrow space, realized to bolt stretching amount accurately, efficient, safety, automatically measure; shortened the hold-up time of personnel under radiation environment; reduce its radiation dose of accepting, protected operating personnel's health.Simultaneously, technique can be transplanted to the automatic measurement of other rugged surroundings, has remedied domestic techno-absence in this regard.
(2) use flexible cords that meter is placed, increase redundancy, the device damage of avoiding the hard contact of physical construction to bring promotes accuracy of measurement simultaneously greatly.
(3) the mechanical arm rotational angle adopts mechanical position limitation, and switch is spacing, and the measure of Current Control triple protection guarantees the job safety under the nuclear industry environment.
(4) data collection processor uses FPGA to be the system architecture of core, effectively guarantees the jumbo end-equipment of control and data acquisition.
Description of drawings
Fig. 1 is actuating unit structural representation among the present invention;
Fig. 2 is control device structured flowchart among the present invention;
Fig. 3 is the motion schematic diagram of actuating unit from initial bit to the measurement position among the present invention;
Fig. 4 is the motion schematic diagram of actuating unit from the measurement position to initial bit among the present invention;
Fig. 5 is that actuating unit is installed in structural representation on the circuit orbit among the present invention;
Wherein: 1-fixed head, 2-semi-girder, 3-coiling cap, 4-limit switch A, 5-limit switch B, 6-joint motor A, 7-shutdown motor B, 8-carriage, 9-adapter.
Embodiment
A kind of whole bolt stretching machine amount of tension self-operated measuring unit, it comprises: actuating unit and control device; Wherein,
Referring to accompanying drawing 1, actuating unit comprises: fixed head 1, semi-girder 2, coiling cap 3, limit switch A4, limit switch B5, joint motor A6, shutdown motor B7, carriage 8, adapter 9 and meter;
Fixed head 1 is the L-type structure, and its horizontal component is provided with through hole, and the vertical portion is arranged with mounting hole, and the upper surface of horizontal component also has gear block;
The surface of semi-girder 2 is provided with three through holes in left, center, right, and the end face in the left side of semi-girder 2 is provided with limited block;
Carriage 8 is installed in the lower surface of fixed head 1, and its bottom is provided with U-shaped groove;
Limit switch A4 is installed in the upper surface of fixed head 1;
Limit switch B5 is installed on the carriage 8, and its contact is higher than the upper surface of fixed head 1;
Joint motor A6 is fixedly mounted on the lower surface of fixed head 1, and its output shaft passes the through hole on the fixed head 1, and semi-girder 2 is fixedly connected with the output shaft of joint motor A6 by the through hole in its left side;
Joint motor A6 is fixedly mounted on the lower surface of fixed head 1, and its output shaft passes the through hole on the fixed head 1, and semi-girder 2 is fixedly connected with the output shaft of joint motor A6 by the through hole in its left side;
Shutdown motor B7 is fixedly mounted on the lower surface of semi-girder 2, and its output shaft passes the through hole of semi-girder 2 centres and is fixedly connected with coiling cap 3;
The through hole that cotton rope on the coiling cap 3 passes semi-girder 2 right sides is connected with adapter;
Meter is installed on the adapter, and meter is used for measuring the elongation of kingbolt, and adapter provides suitable working power for meter;
When semi-girder 2 rotates, can be respectively come in contact with the contact of limit switch A4, limit switch B5;
Referring to accompanying drawing 2, control device comprises: industrial computer, FPGA, data conversion module A, data conversion module B, electric current amplification module A, electric current amplification module B, current detection module A and current detection module B;
Write the execution fixed routine in the FPGA, industrial computer is used for showing the measurement data from meter;
Industrial computer is connected with data conversion module A by the CAN data bus; Data conversion module A is connected with FPGA; Meter is connected to FPGA by data conversion module B; The output signal of FPGA divides two-way to connect respectively electric current amplification module A and electric current amplification module B; Electric current amplification module A connects the joint motor A6 in the actuating unit, and electric current amplification module B connects the joint motor B7 in the actuating unit; Current detection module A is connected with joint motor A6 and FPGA, and current detection module B is connected with joint motor B7 and FPGA;
Limit switch A4 links to each other with FPGA with limit switch B5, when the contact of limit switch A4 or limit switch B5 is touched, sends the signal that stops joint motor A6 to FPGA.
The course of work of whole bolt stretching machine amount of tension self-operated measuring unit is:
During initial position, adapter is placed on the U-shaped groove of carriage 8; The staff sends the instruction of executive routine to FPGA by industrial computer;
Referring to accompanying drawing 3, A.FPGA controls joint motor B7 by electric current amplification module B, and the output shaft of joint motor B7 drives 3 rotations of coiling cap, and coiling cap 3 is carried out the take-up action, adapter 9 begins to rise with meter, and the time of rising is controlled by the timing unit among the FPGA;
B.FPGA stops the motion of joint motor B7, A controls joint motor A6 by the electric current amplification module, the output shaft of joint motor A6 drives semi-girder 2 to measuring the position rotation, when the limited block on the semi-girder 2 contacts with limit switch A4, joint motor A6 stop motion, at this moment, adapter 9 and meter be positioned at measure the position directly over;
C.FPGA controls joint motor B7 by electric current amplification module B again, the output shaft of joint motor B7 drives 3 reverse rotations of coiling cap, coiling cap 3 is carried out the unwrapping wire action, and adapter 9 begins to descend with meter, and the time of decline is controlled by the timing unit among the FPGA;
D. when adapter 9 and meter reached the measuring position, FPGA stopped the motion of joint motor B7, and meter begins to measure, and data transfer to industrial computer is shown;
Referring to accompanying drawing 4, after the E. measurement was finished, FPGA controlled joint motor B7 by electric current amplification module B, the output shaft of joint motor B7 drives 3 rotations of coiling cap, coiling cap 3 is carried out the take-up action, and adapter 9 begins to rise with meter, and the time of rising is controlled by the timing unit among the FPGA;
F.FPGA stops the motion of joint motor B7, A controls joint motor A6 by the electric current amplification module, the output shaft of joint motor A6 drives semi-girder 2 to placing the position rotation, when semi-girder 2 contacts with limit switch B5, joint motor A6 stop motion, at this moment, adapter 9 and meter be positioned on the U-shaped groove of carriage 8 directly over;
G.FPGA controls joint motor B7 by electric current amplification module B, the output shaft of joint motor B7 drives 3 reverse rotations of coiling cap, coiling cap 3 is carried out the unwrapping wire action, and adapter 9 begins to descend with meter, and the time of decline is controlled by the timing unit among the FPGA; When adapter 9 contacted with U-shaped groove, FPGA stopped the motion of joint motor B7;
In the said process, if limit switch A4 lost efficacy, can't stop control to joint motor A6, after the gear block on the limited block on the semi-girder 2 and the fixed head 1 comes in contact, realize mechanical position limitation;
Curent change situation among current detection module A and current detection module B Real-Time Monitoring joint motor A6 and the shutdown motor B7, if the current anomaly situation occurs, current detection module A or current detection module B send the signal of interrupt routine to FPGA.
More excellent, the limit switch C that shutdown motor B7 is controlled can be set at semi-girder 2 places, when adapter 9 touching limit switch C, B7 is out of service for the shutdown motor.
When reality is used, 58 equally spaced being installed on the circular guideway of actuating unit, corresponding 58 kingbolts, when off working state integral device be hidden in circular guideway below, thereby avoid interference the normal use of whole bolt tension machine equipment.
Claims (4)
1. a whole bolt stretching machine amount of tension self-operated measuring unit is characterized in that, it comprises: actuating unit and control device; Wherein,
Described actuating unit comprises: fixed head (1), semi-girder (2), coiling cap (3), limit switch A(4), limit switch B(5), joint motor A(6), shutdown motor B(7), carriage (8), adapter (9) and meter;
Described fixed head (1) is the L-type structure, and its horizontal component is provided with through hole, and the vertical portion is arranged with mounting hole, and the upper surface of described horizontal component also has gear block;
The surface of described semi-girder (2) is provided with three through holes in left, center, right, and the end face in the left side of described semi-girder (2) is provided with limited block;
Described carriage (8) is installed in the lower surface of described fixed head (1), and its bottom is provided with U-shaped groove;
Described limit switch A(4) is installed in the upper surface of described fixed head (1);
Described limit switch B(5) be installed on the described carriage (8), its contact is higher than the upper surface of described fixed head (1);
Described joint motor A(6) be fixedly mounted on the lower surface of described fixed head (1), its output shaft passes the through hole on the described fixed head (1), and described semi-girder (2) is by the through hole and described joint motor A(6 in its left side) output shaft be fixedly connected with;
Described shutdown motor B(7) be fixedly mounted on the lower surface of described semi-girder (2), its output shaft passes the through hole in the middle of the described semi-girder (2) and is fixedly connected with described coiling cap (3);
The through hole that cotton rope on the described coiling cap (3) passes described semi-girder (2) right side is connected with described adapter (9);
Described meter is installed on the described adapter;
When described semi-girder (2) rotates, can be respectively and described limit switch A(4), limit switch B(5) contact and described gear block come in contact;
Control device comprises: industrial computer, FPGA, data conversion module A, data conversion module B, electric current amplification module A, electric current amplification module B, current detection module A and current detection module B;
Write the execution fixed routine in the described FPGA, described industrial computer is used for showing the measurement data from described meter;
Described industrial computer is connected with described data conversion module A by the CAN data bus; Described data conversion module A is connected with described FPGA; Described meter is connected to described FPGA by described data conversion module B; The output signal of described FPGA divides two-way to connect respectively described electric current amplification module A and described electric current amplification module B; Described electric current amplification module A connects the joint motor A(6 in the described actuating unit), described electric current amplification module B connects the joint motor B(7 in the described actuating unit); Described current detection module A and described joint motor A(6) and described FPGA be connected described current detection module B and described joint motor B(7) and described FPGA be connected;
Described limit switch A(4) with described limit switch B(5) link to each other with described FPGA, as described limit switch A(4) or described limit switch B(5) contact when touched, send to described FPGA stop described joint motor A(6) signal.
2. a kind of whole bolt stretching machine amount of tension self-operated measuring unit as claimed in claim 1 is characterized in that, the course of work of described whole bolt stretching machine amount of tension self-operated measuring unit is:
During initial position, during initial position, described adapter is placed on the U-shaped groove of described carriage (8); The staff sends the instruction of executive routine to described FPGA by described industrial computer;
A. described FPGA by described electric current amplification module B to described joint motor B(7) control, described joint motor B(7) output shaft drives described coiling cap (3) rotation, described coiling cap (3) is carried out the take-up action, described adapter (9) begins to rise with described meter, and the time of rising is controlled by the timing unit among the described FPGA;
B. described FPGA stops described joint motor B(7) motion, by described electric current amplification module A to described joint motor A(6) control, described joint motor A(6) output shaft drives described semi-girder (2) to measuring the position rotation, limited block on described semi-girder (2) and described limit switch A(4) when contacting, described joint motor A(6) stop motion, at this moment, described adapter (9) and described meter be positioned at measure the position directly over;
C. described FPGA again by described electric current amplification module B to described joint motor B(7) control, described joint motor B(7) output shaft drives described coiling cap (3) reverse rotation, described coiling cap (3) is carried out the unwrapping wire action, described adapter (9) begins to descend with described meter, and the time of decline is controlled by the timing unit among the described FPGA;
D. when adapter (9) and described meter reached the measuring position, described FPGA stopped described joint motor B(7) motion, described meter begins to measure, and data transfer to described industrial computer is shown;
E. after measurement is finished, described FPGA by described electric current amplification module B to described joint motor B(7) control, described joint motor B(7) output shaft drives described coiling cap (3) rotation, described coiling cap (3) is carried out the take-up action, described adapter (9) begins to rise with described meter, and the time of rising is controlled by the timing unit among the described FPGA;
F. described FPGA stops described joint motor B(7) motion, by described electric current amplification module A to described joint motor A(6) control, described joint motor A(6) output shaft drives described semi-girder (2) to placing the position rotation, as described semi-girder (2) and described limit switch B(5) when contacting, described joint motor A(6) stop motion, at this moment, described adapter (9) and described meter be positioned on the U-shaped groove of described carriage (8) directly over;
G. described FPGA by described electric current amplification module B to described joint motor B(7) control, described joint motor B(7) output shaft drives described coiling cap (3) reverse rotation, described coiling cap (3) is carried out the unwrapping wire action, described adapter (9) begins to descend with described meter, and the time of decline is controlled by the timing unit among the described FPGA; When described adapter (9) contacted with described U-shaped groove, described FPGA stopped described joint motor B(7) motion;
In the said process, if described limit switch A(4) lost efficacy, can't be to described joint motor A(6) stop control, after the gear block on the limited block on the described semi-girder (2) and the described fixed head (1) comes in contact, the realization mechanical position limitation;
Described current detection module A and the described joint motor A(6 of described current detection module B Real-Time Monitoring) with described shutdown motor B(7) in the curent change situation, if the current anomaly situation occurs, described current detection module A or described current detection module B send the signal of interrupt routine to described FPGA.
3. a kind of whole bolt stretching machine amount of tension self-operated measuring unit as claimed in claim 1 or 2, it is characterized in that, locate to arrange described shutdown motor B(7 at described semi-girder (2)) the limit switch C that controls, when the described limit switch C of described adapter (9) touching, described shutdown motor B(7) out of service.
4. a kind of whole bolt stretching machine amount of tension self-operated measuring unit as claimed in claim 1 or 2 is characterized in that, 58 equally spaced being installed on the circular guideway of described actuating unit, corresponding 58 kingbolts.
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| CN201310321439.XA CN103353292B (en) | 2013-07-29 | 2013-07-29 | Overall bolt stretching machine amount of tension self-operated measuring unit |
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| CN201310321439.XA CN103353292B (en) | 2013-07-29 | 2013-07-29 | Overall bolt stretching machine amount of tension self-operated measuring unit |
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| CN103353292B CN103353292B (en) | 2016-02-24 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104751621A (en) * | 2013-12-31 | 2015-07-01 | 中核武汉核电运行技术股份有限公司 | Infrared transmission system of digital metering instrument for bolt tensioner |
| CN107877120A (en) * | 2017-12-13 | 2018-04-06 | 国家电网公司 | A kind of ball valve telescopic joint fast assembling-disassembling equipment |
| CN111351457A (en) * | 2020-02-21 | 2020-06-30 | 国家电网有限公司 | Method and device for measuring residual elongation of top cover bolt of pumped storage unit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104751621A (en) * | 2013-12-31 | 2015-07-01 | 中核武汉核电运行技术股份有限公司 | Infrared transmission system of digital metering instrument for bolt tensioner |
| CN104751621B (en) * | 2013-12-31 | 2018-04-27 | 中核武汉核电运行技术股份有限公司 | A kind of digital metering instrument Infrared Transmission system for bolt stretching machine |
| CN107877120A (en) * | 2017-12-13 | 2018-04-06 | 国家电网公司 | A kind of ball valve telescopic joint fast assembling-disassembling equipment |
| CN107877120B (en) * | 2017-12-13 | 2023-06-27 | 国家电网公司 | Quick assembly disassembly equipment of ball valve telescopic joint |
| CN111351457A (en) * | 2020-02-21 | 2020-06-30 | 国家电网有限公司 | Method and device for measuring residual elongation of top cover bolt of pumped storage unit |
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| CN103353292B (en) | 2016-02-24 |
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