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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- 238000003199 nucleic acid amplification method Methods 0.000 claims description 30
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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 the technical field of mechanical and electrical integration, and particularly relates to an automatic measuring device.
Background
The whole bolt stretcher is special mechatronics equipment of nuclear power station switch pressure vessel top cap, and it is through the bottom of locking the kingbolt to lengthen the top through hydraulic power, thereby make the kingbolt produce elastic deformation and produce the pretightning force, at the tensile whole in-process of hydraulic pressure, need rely on the elongation of elongation measurement system to the kingbolt all the time and monitor, and with the data transmission of elongation to the control cabinet on. The existing elongation measuring device is placed on a supporting plate outside a working platform when not in use, and is adsorbed on the supporting plate by virtue of a magnet at the bottom of the elongation measuring device, so that the elongation measuring device is stably stored, and 58 sets of elongation measuring devices correspond to 58 main bolts. When the device is used, an operator is required to manually pull out the elongation measuring device from the supporting plate, wind out the elongation measuring device from the outer side of the working platform, and descend the elongation measuring device to the main bolt. The bracket of the elongation measuring device is in contact with the top surface of the kingbolt. And the ejector rod of the elongation measuring device is in contact with the core rod inside the main bolt. According to the principle that the length of the inner core rod is unchanged when the main bolt is stretched, a distance difference is generated, and the measurement of the elongation of the main bolt is realized.
Because the environment of the measuring position has certain radiation and the number of the measuring meters is more, if the measuring meters are only placed manually, the operator is bound to stay in the radiation environment for a long time, so that the radiation dose of the operator is increased, and the health of the operator is damaged. The chinese patent application No. 201310010466.5 discloses a method for obtaining the stretching direction and the elongation by using a magnetic head to measure the magnetic field change of a magnetic crystal lattice when a piston rod stretches and contracts and analyzing the lead-lag relationship and the alternation times of a magnetic field signal.
Disclosure of Invention
The purpose of the invention is: in order to make up the defects of the prior art, the automatic measuring device is provided, and the automatic measurement of the stretching amount of the whole bolt stretcher is realized in a limited narrow space.
The technical scheme of the invention is as follows: the utility model provides an automatic measuring device of tensile volume of whole bolt stretcher, it includes: an execution device and a control device; wherein,
the execution device comprises: the device comprises a fixed plate, a cantilever beam, a winding cap, a limit switch A, a limit switch B, a joint motor A, a shutdown motor B, a bracket, an adapter and a measuring meter;
the fixing plate is of an L-shaped structure, a through hole is formed in the horizontal part of the fixing plate, a mounting hole is formed in the vertical part of the fixing plate, and a stop block is further arranged on the upper surface of the horizontal part;
the surface of the cantilever beam is provided with a left through hole, a middle through hole and a right through hole, and the end surface of the left side of the cantilever beam is provided with a limiting block;
the bracket is arranged on the lower surface of the fixed plate, and the bottom of the bracket is provided with a U-shaped groove;
the limit switch A is arranged on the upper surface of the fixed plate;
the limit switch B is arranged on the bracket, and the contact of the limit switch B is higher than the upper end surface of the fixed plate;
the joint motor A is fixedly arranged on the lower surface of the fixing plate, an output shaft of the joint motor A penetrates through a through hole in the fixing plate, and the cantilever beam is fixedly connected with the output shaft of the joint motor A through a through hole in the left side of the cantilever beam;
the shutdown motor B is fixedly arranged on the lower surface of the cantilever beam, and an output shaft of the shutdown motor B passes through a through hole in the middle of the cantilever beam and is fixedly connected with the winding cap;
a cord on the winding cap passes through the through hole on the right side of the cantilever beam and is connected with the adapter;
the measuring meter is arranged on the adapter;
when the cantilever beam rotates, the cantilever beam can be respectively contacted with the contacts of the limit switch A and the limit switch B;
the control device includes: the device comprises an industrial personal computer, an FPGA, a data conversion module A, a data conversion module B, a current amplification module A, a current amplification module B, a current detection module A and a current detection module B;
a fixed program is written in the FPGA, and the industrial personal computer is used for displaying the measurement data from the measuring meter;
the industrial personal computer is connected with the data conversion module A through a CAN data bus; the data conversion module A is connected with the FPGA; the measuring meter is connected to the FPGA through a data conversion module B; the output signal of the FPGA is divided into two paths and is respectively connected with the current amplification module A and the current amplification module B; the current amplification module A is connected with a joint motor A in the execution device, and the current amplification module B is connected with a joint motor B in the execution device; the current detection module A is connected with the joint motor A and the FPGA, and the current detection module B is connected with the joint motor B and the FPGA;
and the limit switch A and the limit switch B are connected with the FPGA, and when the contact of the limit switch A or the limit switch B is touched, a signal for stopping the joint motor A is sent to the FPGA.
The invention has the beneficial effects that: (1) the accurate, efficient, safe and automatic measurement of the bolt stretching amount is realized in a limited narrow space, the detention time of personnel in a radiation environment is shortened, the radiation dose received by the personnel is reduced, and the health of operators is protected. Meanwhile, the technology can be transplanted to automatic measurement in other severe environments, and makes up for the technical deficiency in the aspect in China.
(2) The flexible cord is used for placing the measuring meter, redundancy is increased, equipment damage caused by hard contact of a mechanical structure is avoided, and meanwhile measuring accuracy is greatly improved.
(3) The mechanical arm rotation angle adopts triple protective measures of mechanical limit, switch limit and current control, and the operation safety under the nuclear industry environment is ensured.
(4) The data acquisition processor uses the FPGA as a system framework of a core, and effectively ensures control of large-capacity end equipment and data acquisition.
Drawings
FIG. 1 is a schematic diagram of an actuator according to the present invention;
FIG. 2 is a block diagram of a control device according to the present invention;
FIG. 3 is a schematic diagram of the movement of the actuator from the initial position to the measurement position according to the present invention;
FIG. 4 is a schematic diagram of the movement of the actuator from the measurement position to the initial position according to the present invention;
FIG. 5 is a schematic view of the present invention illustrating the structure of the actuator mounted on the circular track;
wherein: 1-fixed plate, 2-cantilever beam, 3-winding cap, 4-limit switch A, 5-limit switch B, 6-joint motor A, 7-shutdown motor B, 8-bracket and 9-adapter.
Detailed Description
The utility model provides an automatic measuring device of tensile volume of whole bolt stretcher, it includes: an execution device and a control device; wherein,
referring to fig. 1, the actuator includes: the device comprises a fixed plate 1, a cantilever beam 2, a winding cap 3, a limit switch A4, a limit switch B5, a joint motor A6, a shutdown motor B7, a bracket 8, an adapter 9 and a measuring meter;
the fixing plate 1 is of an L-shaped structure, a through hole is formed in the horizontal part of the fixing plate, a mounting hole is formed in the vertical part of the fixing plate, and a stop block is arranged on the upper surface of the horizontal part;
the surface of the cantilever beam 2 is provided with a left through hole, a middle through hole and a right through hole, and the end surface of the left side of the cantilever beam 2 is provided with a limiting block;
the bracket 8 is arranged on the lower surface of the fixed plate 1, and the bottom of the bracket is provided with a U-shaped groove;
the limit switch A4 is arranged on the upper surface of the fixed plate 1;
the limit switch B5 is arranged on the bracket 8, and the contact point of the limit switch B5 is higher than the upper end surface of the fixed plate 1;
the joint motor A6 is fixedly arranged on the lower surface of the fixed plate 1, the output shaft of the joint motor A6 passes through the through hole on the fixed plate 1, and the cantilever beam 2 is fixedly connected with the output shaft of the joint motor A6 through the through hole on the left side of the cantilever beam;
the joint motor A6 is fixedly arranged on the lower surface of the fixed plate 1, the output shaft of the joint motor A6 passes through the through hole on the fixed plate 1, and the cantilever beam 2 is fixedly connected with the output shaft of the joint motor A6 through the through hole on the left side of the cantilever beam;
the shutdown motor B7 is fixedly arranged on the lower surface of the cantilever beam 2, and the output shaft of the shutdown motor B7 passes through the through hole in the middle of the cantilever beam 2 and is fixedly connected with the winding cap 3;
a cord on the winding cap 3 passes through the through hole on the right side of the cantilever beam 2 and is connected with the adapter;
the adapter is used for providing a proper working power supply for the measuring meter;
when the cantilever beam 2 rotates, the cantilever beam can be respectively contacted with the contacts of a limit switch A4 and a limit switch B5;
referring to fig. 2, the control device includes: the device comprises an industrial personal computer, an FPGA, a data conversion module A, a data conversion module B, a current amplification module A, a current amplification module B, a current detection module A and a current detection module B;
a fixed program is written in the FPGA, and the industrial personal computer is used for displaying the measurement data from the measuring meter;
the industrial personal computer is connected with the data conversion module A through a CAN data bus; the data conversion module A is connected with the FPGA; the measuring meter is connected to the FPGA through a data conversion module B; the output signal of the FPGA is divided into two paths and is respectively connected with the current amplification module A and the current amplification module B; the current amplification module A is connected with a joint motor A6 in the actuating device, and the current amplification module B is connected with a joint motor B7 in the actuating device; the current detection module A is connected with the joint motor A6 and the FPGA, and the current detection module B is connected with the joint motor B7 and the FPGA;
the limit switch A4 and the limit switch B5 are connected with the FPGA, and when the contact of the limit switch A4 or the limit switch B5 is touched, a signal for stopping the joint motor A6 is sent to the FPGA.
The working process of the automatic measuring device for the stretching amount of the integral bolt stretcher is as follows:
in the initial position, the adapter is placed on the U-shaped groove of the bracket 8; the working personnel sends out an instruction for executing the program to the FPGA through the industrial personal computer;
referring to fig. 3, in the a.fpga, the joint motor B7 is controlled by the current amplification module B, the output shaft of the joint motor B7 drives the winding cap 3 to rotate, the winding cap 3 performs a winding action, the adapter 9 and the measuring meter start to rise, and the rising time is controlled by a time sequence unit in the FPGA;
b, the FPGA stops the motion of the joint motor B7, the joint motor A6 is controlled by the current amplification module A, an output shaft of the joint motor A6 drives the cantilever beam 2 to rotate to the measurement position, when a limit block on the cantilever beam 2 is contacted with the limit switch A4, the joint motor A6 stops moving, and at the moment, the adapter 9 and the measuring meter are positioned right above the measurement position;
the FPGA controls the joint motor B7 through the current amplification module B again, an output shaft of the joint motor B7 drives the winding cap 3 to rotate reversely, the winding cap 3 executes a paying-off action, the adapter 9 and the measuring meter start to descend, and the descending time is controlled by a time sequence unit in the FPGA;
D. when the adapter 9 and the measuring meter reach the measuring position, the FPGA stops the movement of the joint motor B7, the measuring meter starts to measure, and the measuring data is transmitted to the industrial personal computer for display;
referring to fig. 4, after the measurement is completed, the FPGA controls the joint motor B7 through the current amplification module B, the output shaft of the joint motor B7 drives the winding cap 3 to rotate, the winding cap 3 performs a winding action, the adapter 9 and the measurement meter start to rise, and the rising time is controlled by a time sequence unit in the FPGA;
f, the FPGA stops the movement of the joint motor B7, the joint motor A6 is controlled through the current amplification module A, an output shaft of the joint motor A6 drives the cantilever beam 2 to rotate towards the placing position, when the cantilever beam 2 is contacted with the limit switch B5, the joint motor A6 stops moving, and at the moment, the adapter 9 and the measuring meter are positioned right above the U-shaped groove of the bracket 8;
the FPGA controls a joint motor B7 through a current amplification module B, an output shaft of the joint motor B7 drives a winding cap 3 to rotate reversely, the winding cap 3 executes a paying-off action, the adapter 9 and the measuring meter start to descend, and the descending time is controlled by a time sequence unit in the FPGA; when the adapter 9 is in contact with the U-shaped groove, the FPGA stops the motion of the joint motor B7;
in the process, if the limit switch A4 fails, the stop control of the joint motor A6 cannot be performed, and mechanical limit is realized after a limit block on the cantilever beam 2 is contacted with a stop block on the fixed plate 1;
the current detection module A and the current detection module B monitor the current change condition of the joint motor A6 and the shutdown motor B7 in real time, and if the current is abnormal, the current detection module A or the current detection module B sends a signal for interrupting a program to the FPGA.
Preferably, a limit switch C for controlling the shutdown motor B7 may be disposed at the cantilever 2, and when the adapter 9 touches the limit switch C, the shutdown motor B7 stops operating.
During the in-service use, 58 final controlling elements are equidistant to be installed on circular guide rail, correspond 58 king-bolts, and whole equipment is hidden in circular guide rail's below when non-operating condition to avoid disturbing the normal use of whole bolt stretcher equipment.
Claims (4)
1. The utility model provides an automatic measuring device of tensile volume of whole bolt stretcher, characterized by, it includes: an execution device and a control device; wherein,
the execution device comprises: the device comprises a fixed plate (1), a cantilever beam (2), a winding cap (3), a limit switch A (4), a limit switch B (5), a joint motor A (6), a shutdown motor B (7), a bracket (8), an adapter (9) and a measuring meter;
the fixing plate (1) is of an L-shaped structure, a horizontal part of the fixing plate is provided with a through hole, a vertical part of the fixing plate is provided with a mounting hole, and the upper surface of the horizontal part is also provided with a stop block;
the surface of the cantilever beam (2) is provided with a left through hole, a middle through hole and a right through hole, and the end surface of the left side of the cantilever beam (2) is provided with a limiting block;
the bracket (8) is arranged on the lower surface of the fixed plate (1), and the bottom of the bracket is provided with a U-shaped groove;
the limit switch A (4) is arranged on the upper surface of the fixing plate (1);
the limit switch B (5) is arranged on the bracket (8), and the contact point of the limit switch B is higher than the upper end surface of the fixed plate (1);
the joint motor A (6) is fixedly arranged on the lower surface of the fixing plate (1), an output shaft of the joint motor A penetrates through a through hole in the fixing plate (1), and the cantilever beam (2) is fixedly connected with the output shaft of the joint motor A (6) through the through hole in the left side of the cantilever beam;
the shutdown motor B (7) is fixedly arranged on the lower surface of the cantilever beam (2), and an output shaft of the shutdown motor B passes through a through hole in the middle of the cantilever beam (2) and is fixedly connected with the winding cap (3);
a wire rope on the winding cap (3) passes through a through hole on the right side of the cantilever beam (2) and is connected with the adapter (9);
the measuring meter is arranged on the adapter;
when the cantilever beam (2) rotates, the cantilever beam can be respectively contacted with the contact points of the limit switch A (4) and the limit switch B (5) and the stop block;
the control device includes: the device comprises an industrial personal computer, an FPGA, a data conversion module A, a data conversion module B, a current amplification module A, a current amplification module B, a current detection module A and a current detection module B;
a fixed program is written in the FPGA for execution, and the industrial personal computer is used for displaying the measurement data from the measuring meter;
the industrial personal computer is connected with the data conversion module A through a CAN data bus; the data conversion module A is connected with the FPGA; the measuring meter is connected to the FPGA through the data conversion module B; the output signal of the FPGA is divided into two paths to be respectively connected with the current amplification module A and the current amplification module B; the current amplification module A is connected with a joint motor A (6) in the execution device, and the current amplification module B is connected with a joint motor B (7) in the execution device; the current detection module A is connected with the joint motor A (6) and the FPGA, and the current detection module B is connected with the joint motor B (7) and the FPGA;
the limit switch A (4) and the limit switch B (5) are connected with the FPGA, and when the contacts of the limit switch A (4) or the limit switch B (5) are touched, a signal for stopping the joint motor A (6) is sent to the FPGA.
2. The automatic measuring device for the stretching amount of the integral bolt stretching machine as claimed in claim 1, wherein the working process of the automatic measuring device for the stretching amount of the integral bolt stretching machine is as follows:
in the initial position, the adapter is placed on the U-shaped groove of the bracket (8); the working personnel sends out an instruction for executing a program to the FPGA through the industrial personal computer;
A. the FPGA controls the joint motor B (7) through the current amplification module B, an output shaft of the joint motor B (7) drives the winding cap (3) to rotate, the winding cap (3) executes a wire winding action, the adapter (9) and the measuring meter start to rise, and the rising time is controlled by a time sequence unit in the FPGA;
B. the FPGA stops the motion of the joint motor B (7), the joint motor A (6) is controlled through the current amplification module A, an output shaft of the joint motor A (6) drives the cantilever beam (2) to rotate to a measurement position, when a limit block on the cantilever beam (2) is contacted with the limit switch A (4), the joint motor A (6) stops moving, and at the moment, the adapter (9) and the measurement meter are positioned right above the measurement position;
C. the FPGA controls the joint motor B (7) through the current amplification module B again, an output shaft of the joint motor B (7) drives the winding cap (3) to rotate reversely, the winding cap (3) executes a wire releasing action, the adapter (9) and the measuring meter start to descend, and the descending time is controlled by a time sequence unit in the FPGA;
D. when the adapter (9) and the measuring meter reach the measuring position, the FPGA stops the movement of the joint motor B (7), the measuring meter starts to measure, and measuring data are transmitted to the industrial personal computer to be displayed;
E. after the measurement is finished, the FPGA controls the joint motor B (7) through the current amplification module B, an output shaft of the joint motor B (7) drives the winding cap (3) to rotate, the winding cap (3) executes a winding action, the adapter (9) and the measuring meter start to rise, and the rising time is controlled by a time sequence unit in the FPGA;
F. the FPGA stops the motion of the joint motor B (7), the joint motor A (6) is controlled through the current amplification module A, an output shaft of the joint motor A (6) drives the cantilever beam (2) to rotate towards a placing position, when the cantilever beam (2) is in contact with the limit switch B (5), the joint motor A (6) stops moving, and at the moment, the adapter (9) and the measuring meter are positioned right above the U-shaped groove of the bracket (8);
G. the FPGA controls the joint motor B (7) through the current amplification module B, an output shaft of the joint motor B (7) drives the winding cap (3) to rotate reversely, the winding cap (3) executes a wire releasing action, the adapter (9) and the measuring meter start to descend, and the descending time is controlled by a time sequence unit in the FPGA; when the adapter (9) is in contact with the U-shaped groove, the FPGA stops the movement of the joint motor B (7);
in the process, if the limit switch A (4) fails, the joint motor A (6) cannot be stopped, and mechanical limit is realized after a limit block on the cantilever beam (2) is contacted with a stop block on the fixed plate (1);
the current detection module A and the current detection module B monitor the current change condition of the joint motor A (6) and the shutdown motor B (7) in real time, and if the current is abnormal, the current detection module A or the current detection module B sends a signal for interrupting a program to the FPGA.
3. The automatic measuring device for the stretching amount of the integral bolt stretching machine as claimed in claim 1 or 2, wherein a limit switch C for controlling the shutdown motor B (7) is arranged at the cantilever beam (2), and when the adapter (9) touches the limit switch C, the shutdown motor B (7) stops running.
4. The automatic measuring device for the stretching amount of the integral bolt stretching machine as claimed in claim 1 or 2, wherein 58 executing devices are arranged on the circular guide rail at equal intervals, and correspond to 58 main bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310321439.XA CN103353292B (en) | 2013-07-29 | 2013-07-29 | Overall bolt stretching machine amount of tension self-operated measuring unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Publication Number | Publication Date |
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| CN103353292A true CN103353292A (en) | 2013-10-16 |
| CN103353292B CN103353292B (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310321439.XA Active CN103353292B (en) | 2013-07-29 | 2013-07-29 | Overall bolt stretching machine amount of tension self-operated measuring unit |
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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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| DE4227817A1 (en) * | 1992-08-21 | 1994-02-24 | Eos Electro Optical Syst | Coordinate measuring machine for surface measurement - has holder of three=dimensional positioning system for alternately mounting probe or Moire measurement head |
| CN200968840Y (en) * | 2006-11-08 | 2007-10-31 | 哈尔滨汽轮机厂有限责任公司 | Apparatus for measuring screw bolt elongation amount for steam turbine assembly measurement |
| CN103063123A (en) * | 2013-01-11 | 2013-04-24 | 中国矿业大学 | Hydraulic cylinder length extension measuring device and method |
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2013
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| FR2517051A1 (en) * | 1981-11-24 | 1983-05-27 | Ckd Praha | SCREW ELONGATION MEASURING DEVICE |
| DE4227817A1 (en) * | 1992-08-21 | 1994-02-24 | Eos Electro Optical Syst | Coordinate measuring machine for surface measurement - has holder of three=dimensional positioning system for alternately mounting probe or Moire measurement head |
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| 赵立海: "汽轮机汽缸中分面螺栓伸长量测量方法及应用", 《汽轮机技术》, vol. 51, no. 3, 30 June 2009 (2009-06-30) * |
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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| Publication number | Publication date |
|---|---|
| CN103353292B (en) | 2016-02-24 |
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