CN103419165A - High-precision torque wrench and checkout, installation and detection method thereof - Google Patents
High-precision torque wrench and checkout, installation and detection method thereof Download PDFInfo
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- CN103419165A CN103419165A CN2013103177066A CN201310317706A CN103419165A CN 103419165 A CN103419165 A CN 103419165A CN 2013103177066 A CN2013103177066 A CN 2013103177066A CN 201310317706 A CN201310317706 A CN 201310317706A CN 103419165 A CN103419165 A CN 103419165A
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Abstract
The invention discloses a high-precision torque wrench and a checkout, installation and detection method thereof. The high-precision torque wrench comprises a sensing component, a force arm and a display component. The sensing component is connected with the force arm, and the display component is connected with the sensing component through a signal line to complete display output; the sensing component comprises a force-bearing plate, an elastic body, a set of connecting plates, a square tenon and a set of strain gages; the connecting plates comprise a front connecting plate and a back connecting plate; the force-bearing plate and the elastic body are fixedly arranged between the front connecting plate and the back connecting plate to form a fixed body; the square tenon is arranged on the lower end face of the sensing component; the strain gages are arranged on the sensing component; one end of the force arm is fixed to the other side of the back connecting plate to apply acting force; the display component is electrically connected with the strain gages. According to the high-precision torque wrench and the checkout, installation and detection method thereof, torque value measurement is not affected by force-bearing positions, and therefore a scientific and reliable calibration method is provided for verification and calibration of torque wrench calibrating instruments.
Description
Technical field
The present invention relates to a kind of high precision high accuracy torque spanner and using method thereof, can be used for bolt tightening, bolt tightening detection, torsion-testing and detecting device for determining torque of spanner testing calibration.
Background technology
Torque spanner claims again torque wrench, a kind of instrument that is mainly used in bolt tightening, called after torque wrench in GB, called after torque spanner in vertification regulation series, the instrument that torque spanner is examined and determine is called detecting device for determining torque of spanner, continue to use customary nomenclature in rules in present specification, that is: torque spanner and detecting device for determining torque of spanner.For the bolt tightening moment of torsion, more and more pay attention to both at home and abroad at present, the application demand of high-precision torque spanner is more and more urgent, and the torque spanner that external manufacturer production high accuracy torque spanner can reach 1%, use as standard has reached 0.1% precision especially.Domestic torque spanner is difficult to reach 1% precision, and very large at change force application location time error, and while changing the stress point position, numerical value will have larger variation.Can only, in the groove place of spanner mark application of force guarantee 1% precision, as adjusted a little position, can't reach 1% precision.
In addition, up-to-date revision also will be promulgated and carry out national detecting device for determining torque of spanner vertification regulation, require the accuracy class of standard torque spanner to reach 0.3% and 0.1% two-stage, and still can reach above-mentioned two-stage accuracy class while being examined and determine in the stressed position of change, and current domestic this rules required standard torque spanner that also do not reach.
Summary of the invention
The present invention utilizes strain measurement technique, in conjunction with force structure, design, independent development a kind of high accuracy torque spanner, be characterized in scientific and reasonable for structure, accuracy class is high, can reach 0.1% precision, 1% precision than existing techniques in realizing improves an order of magnitude, and the error of indication and repeatability all are better than 0.1% under different force application locations.The torque spanner range ability of series of the present invention can, from 0.1Nm-5000Nm, can meet up-to-date revision and will promulgate the national detecting device for determining torque of spanner vertification regulation of execution.In addition, torque spanner of the present invention is portable and smart, be easy to carry, and can be widely used in that all kinds of bolt tightenings are controlled and assembly quality of bolt detects, as standard device, use and can also detect for the torque spanner calibrating installation.
A kind of high accuracy torque spanner, comprise sensing element, the arm of force and display unit, and described sensing element is connected with the described arm of force, and described display unit is connected with described sensing element by holding wire, completes and show output;
Described sensing element comprises stressed plate 4, elastomer 7, one group of connecting plate, square tenon 5 and one group of foil gauge 6;
Described one group of connecting plate comprises front connecting plate 3 and rear connecting plate 8; Described stressed plate 4 and elastomer 7 are fixedly installed between described front connecting plate 3 and rear connecting plate 8, form a fixed body; Described side's tenon 5 is arranged on the lower surface of described sensing element; Described output side tenon 5 is positioned at the bottom surface of described stressed plate 4; Described foil gauge 6 is positioned on two sidewalls of described elastomer 7.The bottom of described stressed plate 4 arranges square opening, and described side's tenon 5 embeds in this square opening by magnet, and the axis centre line of described square opening overlaps with the axis centre line of described side's tenon 5.
Described rear connecting plate 8 is connected with the arm of force; Can on rear connecting plate 8, leave screwed hole and the arm of force is bolted, also can on rear connecting plate 8, process other suitable modes and make 8 to be connected with the arm of force.
One group of described foil gauge 6 is arranged on sensing element; One group of described foil gauge 6 is arranged on the surface, two side of described elastomer 7, and fixing upper and lower two foil gauges 6 of each side, and four foil gauges of both sides are respectively ε 1, ε 2, ε 3, ε 4;
Described four foil gauges form full electric bridge, and the fixed position of described foil gauge 6 equates the distance of each foil gauge 6 along the axis centre line parallel of vertical direction center line and square tenon 5 and each center line to described front connecting plate 3.
The described arm of force one end is fixed on the opposite side of described rear connecting plate 8, applies active force; Described display unit is electrically connected to described one group of foil gauge 6.Show and be applied to the torque value on bolt, foil gauge is connected with outside Displaying Meter by adapter after forming full-bridge.
In concrete scheme, described elastomer 7 is fixed on the top of described stressed plate 4;
Between described stressed plate 4 and elastomer 7 and described front connecting plate 3 and rear connecting plate 8 for the integral type structure or be connected by attaching parts; Described attaching parts comprise one group of set bolt; Be used for described stressed plate 4, elastomer 7 is fixed in the middle of described front connecting plate 3 and rear connecting plate 8; Stressed plate 4 a just end is fixed, and with elastomer, does not contact, and moment of torsion is transmitted on elastomer 7 by connecting plate 3.
In concrete enforcement, described attaching parts are the first construction bolt 1, the second construction bolt 2, the 3rd construction bolt 9; Described the first construction bolt 1 is fixedly connected with described front connecting plate 3 with described elastomer 7; Described the second construction bolt 2 is fixedly connected with described front connecting plate 3 with described stressed plate 4; Described the 3rd construction bolt 9 is fixedly connected with described rear connecting plate 8 with described elastomer 7.
Can comprise following several situation:
Described front connecting plate 3 is the integral type structure with described elastomer 7, between described front connecting plate 3 and described stressed plate 4, by the second construction bolt 2, is fixedly connected with, and between described rear connecting plate 8 and described elastomer 7, by the 3rd construction bolt 9, is fixedly connected with;
Perhaps, described front connecting plate 3 is the integral type structure with described stressed plate 4, between described front connecting plate 3 and described elastomer 7, by the first construction bolt 1, is fixedly connected with, and between described rear connecting plate 8 and described elastomer 7, by the 3rd construction bolt 9, is fixedly connected with;
Perhaps, described elastomer 7 is the integral type structure with described rear connecting plate 8, between described front connecting plate 3 and described elastomer 7, by the first construction bolt 1, is fixedly connected with, and between described front connecting plate 3 and described stressed plate 4, by the second construction bolt 2, is fixedly connected with;
Perhaps, described elastomer 7 be the integral type structure with described rear connecting plate 8, and described front connecting plate 3 and described stressed plate 4 are the integral type structure, between described front connecting plate 3 and described stressed plate 4, by the second construction bolt 2, is fixedly connected with.
When described front connecting plate 3 and described stressed plate 4 and/or described elastomer 7 and/or described elastomer 7 are formed to integral structure with described rear connecting plate 8, can realize that high manufacturing accuracy is for mode most preferably.
If be not integral structure between described front connecting plate 3 and described stressed plate 4 or elastomer 7, neither integral structure between described elastomer 7 and described rear connecting plate 8, all by attaching parts, connect:
Described elastomer cross section is circle or rectangle etc.
All can be circle or rectangle etc. before and after pasting the foil gauge position.Without specific function, the strain computational algorithm difference that different cross section when design produces during according to different its same moment of torsion of mechanics formula.
The size of the length width of described elastomer 7 is adjustable, and when length width changes, corresponding area of section changes thereupon, for changing the range ability of high accuracy torque spanner.
Comprise
Described sensing element also comprises shell 10, and described jacket applies outside described front connecting plate 3, rear connecting plate 8 and elastomer 7.
Second inventive point of the present invention is to utilize the high accuracy torque spanner to carry out the detecting device for determining torque of spanner method of calibration
Described detecting device for determining torque of spanner method of calibration is that described high accuracy torque spanner is connected with detecting device for determining torque of spanner, for the described detecting device for determining torque of spanner of assay calibration;
The square tenon 5 of described torque spanner is connected with the test side of described detecting device for determining torque of spanner; Open detecting device for determining torque of spanner, the operation detecting device for determining torque of spanner is after on detecting device for determining torque of spanner, reaction shelves arm mechanism touches the high accuracy torque wrench arm of force, just moment of torsion is applied on spanner, and then both data relatively, the measured value of detecting device for determining torque of spanner is carried out to verification.
The present invention is in the described torque spanner of application, and the 3rd inventive point of the present invention is torque spanner is carried out to the bolt installation method: by the square tenon 5 of described torque spanner by fixed muffle by bolt according to the required precision connection that is tightened.Arrive stop after the mounting torque of wanting.
In addition, torque spanner of the present invention for construction bolt except can installing, the more important bolt installation quality measuring method that is, according to setting and working condition requirement, by the square tenon 5 of described torque spanner, by fixed muffle, the torque value to construction bolt is detected.
Spanner of the present invention can be according to different ranges, the arm of force of design different length, and such as arm of force length can be from 200mm～1500mm, the spanner total quality is from 1kg～10kg.
High accuracy torque spanner of the present invention has accuracy class high: relative error of indicating value and repeatability all are better than 0.1%.Most critical be tenon center, the side of being all the time torque value that spanner is measured when changing point of application position, be different from other Digital-display torque spanners and will bring the defect of larger measure error when the stressed position of change.High accuracy torque spanner range ability of the present invention is wide: can be from 0.1Nm-5000Nm.Dexterous light, be easy to carry about with one.
In addition, change the elastomeric size of spanner of the present invention and just can change the spanner range ability, this structure can realize at 0.1Nm-5000Nm, preferably in 1Nm～2000Nm scope, reach 0.1% precision, uncertainty of measurement 0.1%(k=2), while changing the stress point position, the error of indication all is better than 0.1%(k=2 with uncertainty), so can be used as the standard torque spanner of detecting device for determining torque of spanner assay calibration.
Generally speaking, the present invention is one and has high-precision torque spanner, meets the not stressed position influence of measurement torque value of new standard requirement, for the detecting device for determining torque of spanner assay calibration provides science, calibrates reliably means.Can also provide scientific and effective high accuracy torque spanner for the bolt tightening operating mode detects, and, high accuracy torque spanner of the present invention is practical and convenient, for the testing calibration detecting device for determining torque of spanner of going out, all kinds of bolt tightening torsion-testing provide convenient and practical standard.
The accompanying drawing explanation
The structural representation that Fig. 1 is high accuracy torque spanner of the present invention.
The top view that Fig. 2 is Fig. 1.
The structural representation of the sensing element that Fig. 3 is high accuracy torque spanner of the present invention.The top view that Fig. 4 is Fig. 3.
Description of reference numerals:
Connecting plate, 9-the 3rd construction bolt, 10-shell after a-sensing element, the b-arm of force, 1-the first construction bolt, 2-the second construction bolt, the front connecting plate of 3-, 4-stressed plate, the 5-side of output tenon, 6-foil gauge, 7-elastomer, 8-.
The specific embodiment
Below in conjunction with embodiment, further illustrate the present invention.
Embodiment 1
High accuracy torque spanner as shown in Fig. 3～4, it comprises sensing element, the arm of force and Displaying Meter, and described sensing element is connected with the described arm of force, and described Displaying Meter is connected with described sensing element by holding wire, it is characterized in that:
Described sensing element comprises front connecting plate 3 and rear connecting plate 8, stressed plate 4, elastomer 7 side's tenons 5 and foil gauge 6;
Described stressed plate 4 and described elastomer 7 are at the homonymy of described front connecting plate 3, and described elastomer 7 is positioned at the top of described stressed plate 4, and on the horizontal direction of described elastomer 7 and described stressed plate 4, each plane is parallel to each other; Described rear connecting plate 8 is positioned at the opposite side of described elastomer 7;
Between described front connecting plate 3 and described stressed plate 4 and/or described elastomer 7 and/or described elastomer 7 and described rear connecting plate 8 for the integral type structure or be connected by attaching parts;
Described rear connecting plate 8 is connected with the arm of force; Can on rear connecting plate 8, leave screwed hole and the arm of force is bolted, also can on rear connecting plate 8, process other suitable modes and make 8 to be connected with the arm of force.
Described output side tenon 5 is positioned at the bottom of described stressed plate 4, and described foil gauge 6 is positioned at two sidewalls of described elastomer 7.
Described front connecting plate 3 is that integral type structure or described front connecting plate 3 are that integral type structure and/or described elastomer 7 are the integral type structure with described rear connecting plate 8 with described stressed plate 4 with described elastomer 7.The bottom of described stressed plate 4 arranges square opening, and described output side tenon 5 embeds in this square opening by magnet, and the center line of described square opening overlaps with the center line of described output side tenon 5.
Each side of two sidewalls of elastomer 7 is pasted two foil gauges 6, both sides are pasted four foil gauges 6 altogether, be respectively ε 1, ε 2, ε 3, ε 4, four foil gauges form full-bridges, the paste position of described foil gauge 6 to guarantee each foil gauge 6 along vertical direction center line and each center line parallel with the center line of output side tenon 5 to described front connecting plate 3 apart from equal.
Described attaching parts are the first construction bolt 1, the second construction bolt 2, the 3rd construction bolt 9;
Described the first construction bolt 1 is fixedly connected with described front connecting plate 3 with described elastomer 7;
Described the second construction bolt 2 is fixedly connected with described front connecting plate 3 with described stressed plate 4;
Described the 3rd construction bolt 9 is fixedly connected with described rear connecting plate 8 with described elastomer 7.
Described front connecting plate 3 is fixed with it in the both sides of elastomer 7 one ends by two the first construction bolts 1;
Described front connecting plate 3 is fixed with it in the both sides of stressed plate 4 one ends by two the second construction bolts 2;
Described rear connecting plate 8 is fixed with it in the both sides of elastomer 7 other ends by two the 3rd construction bolts 9.
Described sensing element also comprises shell 10, and it is the structure be comprised of end face and two sides, leaves screwed hole on described two sides to be connected with rear connecting plate 8 or to be connected with elastomer 7 with front connecting plate 3 respectively.
Described elastomer 7 posts the part of foil gauge 6, and its cross section is rectangle or circle etc.Without specific function, the strain computational algorithm difference that different cross section when design produces during according to different its same moment of torsion of mechanics formula.
Spanner of the present invention can be according to different ranges, the arm of force of design different length, and such as can be from 200mm～1500mm, the spanner total quality be from 1kg～10kg.
The course of work of the present invention is:
First: while as the standard torque spanner, detecting device for determining torque of spanner being calibrated to detection, this high accuracy torque spanner is used as to common wrench and is arranged on detecting device for determining torque of spanner, examined and determine according to detecting device for determining torque of spanner vertification regulation Plays torque spanner checking method.
Second: carry out the bolt installation or when the bolt installation quality is detected, this spanner can be connected with construction bolt by sleeve as the high accuracy torque spanner, bolt is screwed, stopping when reaching target torque value.
Technique scheme is one embodiment of the present invention, for those skilled in the art, on the basis that the invention discloses application process and principle, be easy to make various types of improvement or distortion, and be not limited only to the described method of the above-mentioned specific embodiment of the present invention, therefore previously described mode is just preferred, and does not have restrictive meaning.
Claims (10)
1. a high accuracy torque spanner, it is characterized in that: comprise sensing element, the arm of force and display unit, described sensing element is connected with the described arm of force, and described display unit is connected with described sensing element by holding wire, completes and shows output;
Described sensing element comprises stressed plate (4), elastomer (7), one group of connecting plate, square tenon (5) and one group of foil gauge (6);
Described one group of connecting plate comprises front connecting plate (3) and rear connecting plate (8); Described stressed plate (4) and elastomer (7) are fixedly installed between described front connecting plate (3) and rear connecting plate (8), form a fixed body; Described side's tenon (5) is arranged on the lower surface of described sensing element; One group of described foil gauge (6) is arranged on sensing element;
The described arm of force one end is fixed on the opposite side of described rear connecting plate (8), applies active force; Described display unit is connected by joint and signal transmssion line with described one group of foil gauge (6).
2. a kind of high accuracy torque spanner according to claim 1 is characterized in that:
Described elastomer (7) is fixed on the top of described stressed plate (4);
Between described stressed plate (4) and elastomer (7) and described front connecting plate (3) and rear connecting plate (8) for the integral type structure or be connected by attaching parts
Described output side tenon (5) is positioned at the bottom surface of described stressed plate (4); Described foil gauge (6) is positioned on two sidewalls of described elastomer (7).
3. a kind of high accuracy torque spanner according to claim 1 and 2 is characterized in that:
The bottom of described stressed plate (4) arranges square opening, and described side's tenon (5) embeds in this square opening by magnet, and the axis centre line of described square opening overlaps with the axis centre line of described side's tenon (5).
4. a kind of high accuracy torque spanner according to claim 2 is characterized in that:
One group of described foil gauge (6) is arranged on the surface, two side of described elastomer (7), and fixing upper and lower two foil gauges (6) of each side, and four foil gauges of both sides are respectively ε 1, ε 2, ε 3, ε 4;
Described four foil gauges form full electric bridge, and the fixed position of described foil gauge (6) equates the distance of each foil gauge (6) along the axis centre line parallel of vertical direction center line and square tenon (5) and each center line to described front connecting plate (3).
5. a kind of high accuracy torque spanner according to claim 2 is characterized in that:
The cross section of described elastomer (7) is circle or rectangle.
6. according to claim 1,2,4,5 described a kind of high accuracy torque spanners is characterized in that:
Length, the width dimensions of described elastomer (7) are adjustable, for changing the range ability of high accuracy torque spanner.
7. a kind of high accuracy torque spanner according to claim 2 is characterized in that:
Described attaching parts comprise one group of set bolt; Be used for described stressed plate (4), elastomer (7) is fixed in the middle of described front connecting plate (3) and rear connecting plate (8);
Described sensing element also comprises shell (10), and described jacket applies outside described front connecting plate (3), rear connecting plate (8) and elastomer (7).
8. one kind is carried out the detecting device for determining torque of spanner method of calibration as one of claim 1-7 utilizes the high accuracy torque spanner, it is characterized in that:
Described detecting device for determining torque of spanner method of calibration is that described high accuracy torque spanner is connected with detecting device for determining torque of spanner, for the described detecting device for determining torque of spanner of assay calibration;
The square tenon (5) of described torque spanner is connected with the test side of described detecting device for determining torque of spanner; Open detecting device for determining torque of spanner, the operation detecting device for determining torque of spanner is after on detecting device for determining torque of spanner, reaction shelves arm mechanism touches the high accuracy torque spanner arm of force, just moment of torsion is applied on spanner, and then both data relatively, the measured value of detecting device for determining torque of spanner is carried out to verification.
9. one kind is carried out the bolt installation method as one of claim 1-7 utilizes the high accuracy torque spanner, it is characterized in that:
By the square tenon (5) of described torque spanner by fixed muffle by bolt according to the required precision connection that is tightened, arrive stop after the mounting torque of wanting.
10. one kind is carried out high accuracy bolt installation quality measuring method as one of claim 1-7 utilizes the high accuracy torque spanner, it is characterized in that:
According to setting and working condition requirement, by the square tenon (5) of described torque spanner, by fixed muffle, the torque value to construction bolt is detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310317706.6A CN103419165B (en) | 2013-07-26 | 2013-07-26 | A kind of high accuracy torque spanner and verification, installation and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310317706.6A CN103419165B (en) | 2013-07-26 | 2013-07-26 | A kind of high accuracy torque spanner and verification, installation and detection method |
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| Publication Number | Publication Date |
|---|---|
| CN103419165A true CN103419165A (en) | 2013-12-04 |
| CN103419165B CN103419165B (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310317706.6A Expired - Fee Related CN103419165B (en) | 2013-07-26 | 2013-07-26 | A kind of high accuracy torque spanner and verification, installation and detection method |
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| CN (1) | CN103419165B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677415A (en) * | 2017-10-16 | 2018-02-09 | 郑州拽亘电子科技有限公司 | A kind of torque wrench device |
| CN107764469A (en) * | 2017-10-16 | 2018-03-06 | 郑州东辰科技有限公司 | Torque spanner calibrating installation and its bolt simulator |
| CN113681497A (en) * | 2021-08-23 | 2021-11-23 | 苏州金锐启智能装备科技有限公司 | Method for automatically searching force application line of digital display torque wrench |
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| US4558601A (en) * | 1984-01-06 | 1985-12-17 | J. S. Technology, Inc. | Digital indicating torque wrench |
| CN2833545Y (en) * | 2005-10-27 | 2006-11-01 | 扬动股份有限公司 | Constant torque wrench calibrator |
| CN102145480A (en) * | 2011-02-18 | 2011-08-10 | 浙江亿洋工具制造有限公司 | Torque wrench structure |
| CN202540196U (en) * | 2012-04-06 | 2012-11-21 | 中国航天空气动力技术研究院 | Direct measurement type digital display torque spanner |
| CN203396526U (en) * | 2013-07-26 | 2014-01-15 | 中国计量科学研究院 | High-precision torque wrench |
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2013
- 2013-07-26 CN CN201310317706.6A patent/CN103419165B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4558601A (en) * | 1984-01-06 | 1985-12-17 | J. S. Technology, Inc. | Digital indicating torque wrench |
| CN2833545Y (en) * | 2005-10-27 | 2006-11-01 | 扬动股份有限公司 | Constant torque wrench calibrator |
| CN102145480A (en) * | 2011-02-18 | 2011-08-10 | 浙江亿洋工具制造有限公司 | Torque wrench structure |
| CN202540196U (en) * | 2012-04-06 | 2012-11-21 | 中国航天空气动力技术研究院 | Direct measurement type digital display torque spanner |
| CN203396526U (en) * | 2013-07-26 | 2014-01-15 | 中国计量科学研究院 | High-precision torque wrench |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677415A (en) * | 2017-10-16 | 2018-02-09 | 郑州拽亘电子科技有限公司 | A kind of torque wrench device |
| CN107764469A (en) * | 2017-10-16 | 2018-03-06 | 郑州东辰科技有限公司 | Torque spanner calibrating installation and its bolt simulator |
| CN107764469B (en) * | 2017-10-16 | 2023-11-14 | 河南鑫亮建设工程有限公司 | Torque spanner calibrating device and bolt simulator thereof |
| CN113681497A (en) * | 2021-08-23 | 2021-11-23 | 苏州金锐启智能装备科技有限公司 | Method for automatically searching force application line of digital display torque wrench |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103419165B (en) | 2016-08-10 |
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