阅读说明：本技术 一种张拉组件的位移测量装置 (Displacement measuring device of tensioning assembly ) 是由 景尤佳 刘光学 张钫 黄传红 陈冬冬 姜克平 郭树恒 于 2021-08-19 设计创作，主要内容包括：本发明涉及位移测量技术领域,提供一种张拉组件的位移测量装置。包括位移标尺、游框和可移动测量爪,游框可移动地套设在位移标尺上,游框的一侧连接可移动测量爪,可移动测量爪用于抵触待测试张拉组件的张拉端,位移标尺的底端固定在待测试张拉组件的外壳壁上,当待测试张拉组件的张拉端产生位移时,会使移动测量爪发生位移,移动测量爪带动游框沿位移标尺上滑动,通过位移标尺能够准确获取张拉组件的张拉端的位移数据,进而保证校准结果的准确度,其中,由于位移标尺的底端固定在待测试张拉组件的外壳壁上,避免人工手持位移标尺时所发生的晃动,极大提高测量位移数据的精度,且便于读取位移数据,操作简单。(The invention relates to the technical field of displacement measurement and provides a displacement measuring device of a tensioning assembly. Including the displacement scale, trip frame and portable measuring claw, the portable cover of trip frame is established on the displacement scale, portable measuring claw is connected to one side of trip frame, portable measuring claw is used for contradicting the stretch-draw end of the awaiting measuring stretch-draw subassembly that awaits measuring, the bottom mounting of displacement scale is on the shell wall of the awaiting measuring stretch-draw subassembly that awaits measuring, when the stretch-draw end of the awaiting measuring stretch-draw subassembly produces the displacement, can make the removal measuring claw take place the displacement, the removal measuring claw drives trip frame and slides on the displacement scale, can accurately acquire the displacement data of the stretch-draw end of stretch-draw subassembly through the displacement scale, and then guarantee the degree of accuracy of calibration result, wherein, because the bottom mounting of displacement scale is on the shell wall of the awaiting measuring stretch-draw subassembly, the rocking that takes place when avoiding artifical handheld displacement scale, greatly improve the precision of measuring displacement data, and be convenient for reading displacement data, and easy operation.)

1. The utility model provides a displacement measurement device of tensioning assembly, its characterized in that includes displacement scale (1), trip frame (2) and portable measuring claw (3), the movably cover of trip frame (2) is established on displacement scale (1), one side of trip frame (2) is connected portable measuring claw (3), portable measuring claw (3) are used for contradicting tensioning end (6) of the tensioning assembly that awaits measuring, the bottom mounting of displacement scale (1) is in on the shell wall of the tensioning assembly that awaits measuring.

2. A displacement measuring device of a tensioning assembly according to claim 1, characterized in that it further comprises a displacement sensor arranged in the trip frame (2) for measuring displacement data of the tensioning end (6) of the tensioning assembly to be tested.

3. A displacement measuring device of a tensioning assembly according to claim 1, characterized in that it further comprises a base (4), said base (4) being fixedly connected to the housing wall by means of a connecting member, said displacement scale (1) being connected to said base (4).

4. A displacement measuring device of a tension assembly according to claim 3, characterized in that the housing wall is provided with an opening adapted to the base (4), and the base (4) is held in the opening and fixedly connected by the connecting part.

5. A displacement measuring device of a tension assembly according to claim 4, characterized in that the side wall of the base (4) is provided with a V-shaped groove (13), the bottom of the opening is provided with a conical protrusion matched with the V-shaped groove (13), and the V-shaped groove (13) is clamped with the conical protrusion.

6. A displacement measuring device of a tensioning assembly according to any of claims 3 to 5, characterized in that the connecting part is a magnetic attraction.

7. A displacement measuring device of a tension assembly according to any one of claims 1 to 5, further comprising a resilient member (11), wherein both ends of the resilient member (11) are connected to the base (4) and the runner frame (2), respectively.

8. A displacement measuring device of a tensioning assembly according to any of claims 2 to 5, characterized in that it further comprises a display screen (7), the displacement sensor transmitting the collected displacement data to the display screen (7) and displaying it.

9. A displacement measuring device of a tensioning assembly according to any one of claims 1 to 5, characterized in that the tensioning assembly to be tested is a jack (5).

Technical Field

The invention relates to the technical field of displacement measurement, in particular to a displacement measuring device of a tensioning assembly.

Background

The prestressed bridge tensioning construction in the existing technical Specification for highway bridge construction (JTG/T3650 and 2020) in China has the following provisions: when the prestressed steel is tensioned by a stress control method, an elongation value (displacement) is checked, the difference between an actual elongation value and a theoretical elongation value is in accordance with design regulations, when the design is not specified, the deviation is controlled within +/-6%, otherwise, tensioning is suspended. The elongation deviation is used as one of double-control indexes (force value and displacement) for tension quality control, and is a key index for evaluating whether tension is qualified or not.

The mode of calibrating the elongation value of the tensioning assembly in reality is as follows: the depth caliper is used as a calibration device, one person operates the automatic tensioning machine to control the extension of a jack cylinder, one person holds the depth caliper by hand to enable the measuring surface of the depth caliper to be attached to the upper edge of a jack piston, and a depth measuring rod of the depth caliper is attached to the upper edge of a cylinder body. And when reaching the displacement point to be measured, reading the displacement indication value and the depth caliper measurement value of the automatic tensioning machine, and calculating the indication error of the jack displacement according to the displacement indication value and the depth caliper measurement value of the automatic tensioning machine. However, when the displacement of the telescopic end of the jack is measured, because no fixed point exists between the depth caliper and the jack, when the telescopic end of the jack is extended, the depth caliper can be held by a hand to shake to a certain extent, and inconvenience is brought to reading. In addition, when the depth measuring rod of the depth caliper is not parallel to the extension axis of the jack cylinder, the reading can deviate, the accuracy of the measured displacement value is influenced, and the accuracy of the calibration result is further influenced.

Disclosure of Invention

The invention provides a displacement measuring device of a tensioning assembly, aiming at solving the technical problems that: the displacement value of the tension assembly is accurately measured, and the operation is simple.

The technical scheme of the displacement measuring device of the tensioning assembly is as follows:

including displacement scale, trip frame and portable measuring claw, the movably cover of trip frame is established on the displacement scale, one side of trip frame is connected portable measuring claw, portable measuring claw is used for conflicting the stretch-draw end of the awaiting measuring stretch-draw subassembly, the bottom mounting of displacement scale is in on the shell wall of the awaiting measuring stretch-draw subassembly.

The displacement measuring device of the tensioning assembly has the following beneficial effects:

when the stretch-draw end of the stretch-draw subassembly that awaits measuring produced the displacement, can make the removal measure the claw and take place the displacement, the removal is measured the claw and is driven the trip frame and slide on the displacement scale, can accurately acquire the displacement data of the stretch-draw end of stretch-draw subassembly through the displacement scale, and then guarantee the degree of accuracy of calibration result, wherein, because the bottom mounting of displacement scale is on the shell wall of the stretch-draw subassembly that awaits measuring, rocking that takes place when avoiding artifical handheld displacement scale, greatly improve the precision of measuring displacement data, and be convenient for read displacement data, and the operation is simple.

On the basis of the scheme, the displacement measuring device of the tensioning assembly can be further improved as follows.

And the displacement sensor is arranged in the travel frame and used for measuring displacement data of the tensioning end of the tensioning component to be tested.

Further, the displacement measuring device further comprises a base, the base is fixedly connected with the shell wall through a connecting part, and the displacement scale is connected to the base.

Furthermore, an opening matched with the base is formed in the shell wall, and the base is clamped with the opening and fixedly connected with the connecting part through the connecting part.

Further, be equipped with the V-arrangement groove on the lateral wall of base, the open-ended bottom be equipped with the toper arch of V-arrangement groove adaptation, the V-arrangement groove with the toper arch card is held.

Further, the connecting part is magnetically attracted.

Furthermore, still include the resilence ware, the both ends of resilence ware are connected respectively the base with the trip frame.

And further, the displacement sensor sends the collected displacement data to the display screen for display.

Further, the tensioning assembly to be tested is a jack.

Drawings

FIG. 1 is a schematic structural diagram of a displacement measuring device of a tension assembly according to an embodiment of the present invention;

FIG. 2 is a left side view of a displacement measuring device of a tension assembly of FIG. 1;

FIG. 3 is a schematic view of the installation position of the magnetic switch;

FIG. 4 is a schematic structural view illustrating a displacement measuring device of a tension assembly according to an embodiment of the present invention applied to a jack;

in the drawings, the components represented by the respective reference numerals are listed below:

1. a displacement scale; 2. a game frame; 3. the measuring claw can be moved; 4. a base; 5. a jack; 6. stretching the end; 7. a display screen; 8. a magnetic switch; 9. fastening screws; 10. a connecting member; 11. a rebounder; 12. a second displacement sensor; 13. and a V-shaped groove.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms also include the plural forms unless the context clearly dictates otherwise, and further, it is understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of the stated features, steps, operations, devices, components, and/or combinations thereof.

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 4, the displacement measuring device of a tensioning assembly in an embodiment of the present invention includes a displacement scale 1, a movable frame 2, and a movable measuring claw 3, wherein the movable frame 2 is movably sleeved on the displacement scale 1, one side of the movable frame 2 is connected to the movable measuring claw 3, the movable measuring claw 3 is used for abutting against a tensioning end 6 of the tensioning assembly to be tested, and a bottom end of the displacement scale 1 is fixed on a housing wall of the tensioning assembly to be tested.

When the stretch-draw end 6 of the stretch-draw subassembly that awaits measuring produces the displacement, can make the removal measure the claw and take place the displacement, the removal is measured the claw and is driven trip frame 2 and slide on the displacement scale 1, can accurately acquire the stretch-draw end 6's of stretch-draw subassembly displacement data through displacement scale 1, and then guarantee the degree of accuracy of calibration result, wherein, because the bottom mounting of displacement scale 1 is on the shell wall of the stretch-draw subassembly that awaits measuring, rocking that takes place when avoiding artifical handheld displacement scale 1, greatly improve the precision of measuring displacement data, and be convenient for read displacement data, and the operation is simple.

Wherein, the tensioning component to be tested is the jack 5 or other tensioning machines, and the tensioning component to be tested is the jack 5 for continuous description, specifically:

the movable measuring claw 3 is connected to the outer surface wall of the swimming frame 2 through a connecting piece 10, and the connecting piece 10 can be specifically: the screw, namely, the fixed connection between the movable measuring claw 3 and the outer wall of the playing frame 2 is realized by the screw, and the connecting piece 10 may specifically be: the sheetmetal of T-shaped, the one end of this sheetmetal is passed through screw fixed connection and is gone up at the exterior wall of trip frame 2, the other end fixed connection of this sheetmetal is in the one end of portable measuring claw 3, portable measuring claw 3's structure can set up and adjust according to actual conditions, do not redundantly here, wherein, according to the jack 5's that awaits measuring the size difference, portable measuring claw 3 removes, so that remove measuring claw conflict and await measuring the stretch-draw end 6 of stretch-draw subassembly, jack 5's flexible end promptly, then fix the current position that removes measuring claw through fastening screw 9.

Preferably, in the above technical solution, the test device further comprises a displacement sensor, the displacement sensor is arranged in the trip frame 2, and the displacement sensor is used for measuring displacement data of the tensioning end 6 of the tensioning assembly to be tested.

Preferably, in the above technical solution, the displacement measuring device further includes a base 4, the base 4 is fixedly connected with the housing wall through a connecting component, and the displacement scale 1 is connected to the base 4.

Wherein, can directly adopt the magnetism gauge stand as the base, the principle of magnetism gauge stand is as follows:

the magnetic meter seat has two magnetizers separated by non-magnetic copper plate and one inside rotating magnet with N pole and S pole in the diameter direction. When the magnet rotates to the middle position, the meter seat can be easily taken away when the magnetic force lines form a closed circuit in the two magnetizers respectively, after the magnet rotates by 90 degrees, the N pole and the S pole face the two magnetizers respectively, and at the moment, the magnetic force lines are closed from the N pole to the magnetizer to the guide rail to the other magnetizer to the S pole to be firmly attached to the shell wall of the jack, at the moment, the connecting part can be understood as the magnet structure in the magnetic meter seat, and the principle of the magnetic meter seat is known by the person skilled in the art, and is not described herein. In another embodiment, the connecting component may be a screw or a magnetic attraction, and the connecting component may also be: the side wall of the base 4 is fixed with the electromagnet in a threaded fixing mode, a power supply line of the electromagnet is connected with the magnetic switch 8, when the magnetic switch 8 is closed, power is supplied to the electromagnet, at the moment, the electromagnet generates magnetic force, when the shell wall of the jack 5 is made of iron or other magnetic materials, the shell wall of the jack 5 is fixedly connected with the shell wall of the jack 5 through the magnetic force, when the shell wall of the jack 5 is not made of iron or other magnetic materials, an iron sheet can be fixed on the shell wall of the jack 5 in a threaded fixing mode, and then the magnetic force generated by the electromagnet is mutually attracted with the iron sheet, so that the fixed connection between the shell walls of the base 4 and the jack 5 is realized. When the magnetic switch 8 is switched off, the power supply to the electromagnet is stopped, and the magnetic force of the electromagnet disappears at the moment, so that the electromagnet is convenient to disassemble. Preferably, in the above technical solution, an opening adapted to the base 4 is provided on the housing wall, and the base 4 is clamped with the opening and is fixedly connected through the connecting component. Specifically, the method comprises the following steps:

the connecting part can be specifically a screw or a magnetic suction part and the like, and the connecting part can also be: the side wall of the base 4 is fixed with the electromagnet in a threaded fixing mode, a power supply line of the electromagnet is connected with the magnetic switch 8, when the base 4 is clamped in the opening, the magnetic switch 8 is closed to supply power to the electromagnet, at the moment, the electromagnet generates magnetic force, when the shell wall of the jack 5 is made of iron or other magnetic materials, the shell wall of the jack 5 is fixedly connected with the opening of the shell wall of the jack 5 through the magnetic force, the fixing strength is further improved, when the shell wall of the jack 5 is not made of iron or other magnetic materials, an iron sheet can be fixed at the bottom of the opening of the shell wall of the jack 5 in a threaded fixing mode, and then the magnetic force generated by the electromagnet is mutually attracted with the iron sheet, so that the fixed connection between the base 4 and the bottom of the opening of the shell wall of the jack 5 is achieved. When the magnetic switch 8 is switched off, the power supply to the electromagnet is stopped, and the magnetic force of the electromagnet disappears at the moment, so that the electromagnet is convenient to disassemble.

Preferably, in the above technical solution, a V-shaped groove 13 is arranged on the side wall of the base 4, a conical protrusion adapted to the V-shaped groove 13 is arranged at the bottom of the opening, and the V-shaped groove 13 is clamped with the conical protrusion.

When the V-shaped groove 13 is clamped with the conical protrusion, the connecting part is used for connecting, so as to further improve the fixing strength, and the explanation of the connection through the connecting part is as above, which is not described herein.

Preferably, in the above technical solution, the game device further includes a rebounder 11, and two ends of the rebounder 11 are respectively connected to the base 4 and the game frame 2. Wherein, resiliometer 11 specifically is spring, elastic band or stay cord resiliometer etc. and resiliometer 11 has certain pulling force, and then makes portable measuring claw 3 and jack 5's piston be flexible and serve along in close contact with promptly, when jack 5's piston was flexible end motion promptly, moves measuring claw and drives displacement sensor and move together to make displacement sensor measure displacement data.

Preferably, in the above technical scheme, the device further comprises a display screen 7, the displacement sensor sends the collected displacement data to the display screen 7 for display, so that the displacement data can be conveniently read by a user, and further the calibration is convenient.

The following describes in detail a displacement measuring device of a tensioning assembly according to the present application by way of a further complete embodiment, in particular:

the displacement measuring device comprises a switch type magnetic suction type base 4, namely the base 4, a linear displacement scale 1, namely the displacement scale 1, an external displacement display, namely a display screen 7, a movable measuring claw 3 and a displacement sensor, wherein the displacement sensor is a capacitive grating type displacement sensor, a positioning hole for mounting the displacement scale 1 is formed in the base 4, a travel frame 2 is movably sleeved on the displacement scale 1, and the capacitive grating type displacement sensor is assembled in the travel frame 2 and used for collecting displacement data and facilitating the recording of calibration data; one side of the movable frame 2 is connected with a movable measuring claw 3 through a connecting piece 10, and the displacement of hydraulic jacks 5 of different models can be measured by adjusting the telescopic length of the movable measuring claw 3; when the magnetic switch 8 is opened, the strong magnetic force can attract the base 4 and the shell wall of the jack 5 to realize fixation; the V-shaped groove 13 on the side wall of the base 4 can be matched with the cylinder body, i.e. the outer shell wall, of the cylindrical jack 5, so as to ensure that the displacement scale 1 is consistent with the extension direction axis of the piston, i.e. the telescopic end, of the jack 5. Stay cord resilience device has certain pulling force, can make and follow in close contact with on movable measurement claw 3 and the 5 pistons of jack, and when jack 5's piston motion, movable measurement claw 3 drives displacement sensor and moves together to make displacement sensor measure displacement data, realize intelligent stretch-draw system, and then be convenient for calibrate, specifically:

magnetism is inhaled to intelligent stretch-draw equipment: loosening the fastening nut on one side of the jack 5, adjusting the telescopic length of the movable measuring grab to enable the movable measuring grab to be in close contact with a piston, namely a telescopic end, of the jack 5, starting equipment for preheating, after preheating is finished, simultaneously resetting the readings of the measuring device, namely the displacement sensor, and the readings of the intelligent tensioning system, namely the second displacement sensor 12, then measuring according to the calibration points (or the calibration points specified by a customer) of 20%, 40%, 60%, 80% and 100% of the full range, simultaneously recording the indication values of the measuring device and the intelligent tensioning system of each calibration point, namely the readings of the displacement sensor and the second displacement sensor 12, repeatedly measuring for 3 times, taking the average value of 3 times as the measured value, calculating the indication value error of each calibration point, and correcting according to the indication value error.

The displacement measuring device of the tensioning assembly has the following advantages:

1) the displacement of the intelligent tensioning system can be easily and accurately measured, errors caused by manual operation are reduced, data are easy to read and record, and the whole calibration process can be finished by one person;

2) the whole displacement measuring device is fixed by the magnetic force of the base 4, and the axes of the displacement scale 1 and the jack 5 in the extension direction are consistent; the stretching force of the rebounder 11 enables the movable measuring claw 3 to be in close contact with a piston of the jack 5, namely the stretching end 6 of the stretching component to be tested, and the telescopic positions of the movable measuring claw 3 and the piston of the jack 5 are synchronous all the time during multiple measurements, so that the measurement accuracy is guaranteed;

3) when the magnetic switch 8 is opened, the base 4 and the jack 5 can be attracted by strong magnetic force, and the magnetic switch can be stably fixed on the jack 5 without being held by hands, so that the influence of artificial factors during calibration is reduced;

4) the V-shaped groove 13 at the bottom of the base 4 is tightly attached to the cylindrical cylinder body of the jack 5, so that the axial positioning is realized, the consistency between the moving direction of the trip frame 2 and the extending direction of the piston of the jack 5 can be greatly improved, and the cosine error is eliminated;

5) the elastic device 11 makes the movable measuring claw 3 closely contact with the piston, namely the telescopic end, of the jack 5 by the tensile force, when the piston of the jack 5 extends out, the movable measuring claw 3 drives the displacement sensor to move together, the self-homing of the displacement sensor is realized during repeated measurement, and the calibration efficiency is improved;

6) the external display 7 shows displacement sensor measured value through the data line in real time, can realize the real-time comparison and the record of calibration data and stretch-draw elongation value, avoids the human eye reading to lead to the inaccuracy of data with the data record is asynchronous.

JJF1033-2016 (measurement standard assessment Specification) stipulates: the technical performance of the new measurement standard needs stability assessment, repeatability test, measurement uncertainty assessment and calibration result verification, and the performance of the displacement measuring device of the tensioning assembly is analyzed according to the standard, specifically:

1) and (3) stability assessment: the stability of the displacement measuring device of the tensioning assembly is checked, a 200mm standard gauge block is selected, a stability test is carried out on 200mm measuring points of the gauge block every 10 days, the stability of the calibrating device is analyzed by measuring the measuring result, and the measuring result is shown in the following table 1

Table 1:

the units in table 1 are in mm,represents the average of the measurements, the difference between the maximum and minimum values in the measurements of the stability test of Table 1The result is less than the maximum allowable error of 0.03mm expected by a standard device, namely the stability of the displacement measuring device of the tension assembly meets the requirement.

2) And (3) repeatability test: the displacement measuring device of the tensioning assembly is subjected to a repeatability test, an intelligent tensioning system is selected, 100mm measuring points of the intelligent tensioning system are measured for 10 times under the repeatability condition, and the measuring results are shown in table 2.

Table 2:

the repeatability is calculated using the first formula.

The first formula is:

in the formula: y is_i-the result of each measurement, mm;

-average of the measurements, mm;

n-number of measurements;

s(y_i) Test standard deviation in mm for a single measurement.

The repeatability test result shows that the method has better repeatability.

3) Measurement uncertainty assessment of calibration results:

the mathematical model is as follows: Δ ═ L_Measuring-L_{Sign board}Wherein: delta represents the elongation error of the intelligent tensioning system, mm and L_MeasuringShows the display value of the elongation value of the intelligent tensioning system, mm, L_{Sign board}And (4) representing the standard value of the digital display scale, mm.

Measurement uncertainty source analysis: the factors influencing the measurement result of the elongation value precision of the intelligent tensioning system mainly comprise: repeatedly measuring the introduced uncertainty of the intelligent tensioning system; and the digital display scale assignment does not lead to uncertainty.

Calculating variance and sensitivity coefficient: from the second equation:

wherein u is_A-measuring the repeatability-induced uncertainty, mm;

u_B-digital display of the uncertainty introduced by the scale, mm;

c_A-the smart tensioning system repeatedly measures the sensitivity factor of the introduced uncertainty;

c_B-sensitivity factors for the uncertainty introduced by the digital display scale.

Sensitivity coefficient:

-standard uncertainty u introduced by repeated measurements_AAnd performing 10 repeated measurements on the elongation value 100mm measuring point of the intelligent tensioning system under the same condition. The standard uncertainty introduced by this component is assessed in a class a method. The results obtained are as described above.

The intelligent tensioning system elongation value positive and negative stroke is calibrated for 3 cycles, so that each measuring point is measured for 6 times, and the following results are obtained:

fifth, standard uncertainty u introduced by capacitance grid digital display scale_B：

The uncertainty of a digital display scale adopted in the calibration of the elongation value of the intelligent tensioning system is evaluated according to a B-type method, and a standard uncertainty component u introduced from the uncertainty component is calculated_BThe calculation method is shown in the following formula:

in the formula: the uncertainty of the indication value of the corresponding measuring point of the U-grid digital display scale;

and the k-capacitive digital display scale shows an inclusion factor used in uncertainty evaluation.

The actually configured digital display scale calibration result shows that the uncertainty U is 0.01mm, and k is 2, then

Sixthly, the uncertainty of the synthetic standard: the influence factors of the uncertainty of the intelligent tensioning system elongation value calibration result are irrelevant, so the synthetic standard uncertainty is calculated according to a second formula, and the synthetic standard uncertainty of a 100mm measuring point can be obtained as follows:

seventhly, expanding uncertainty:

assuming that the measurement result obeys normal distribution, and the inclusion factor k is 2, the extended uncertainty U is calculated according to the following formula, and the result of the synthesized standard uncertainty is substituted to obtain the extended uncertainty of the calibration result: u is 2 × 0.015mm is 0.03 mm;

4) and (3) verification of a calibration result:

typical measuring points of a common intelligent tensioning system are calibrated according to the test method and equipment in the Q/CR 586-2017 standard, and then are calibrated by the calibration equipment and method provided herein, and the measuring results are shown in Table 3.

Table 3:

and calculating the indicating value error and the measurement uncertainty of the corrected intelligent tensioning system, using the En value as a verification basis of a calibration result, calculating En values of 50mm, 100mm and 200mm measurement points to be-0.24, 0.16 and 0.40 respectively, and satisfying comparison results. And from data, the uncertainty of the measurement obtained by the method is far smaller than the uncertainty obtained by adopting the test method in the Q/CR 586-19 2017 standard, which indicates that the method has higher reliability.

In the present invention, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.