CN106706281A - Detecting instrument used for detecting reasonable assembly torque of fastener and testing method - Google Patents
Detecting instrument used for detecting reasonable assembly torque of fastener and testing method Download PDFInfo
- Publication number
- CN106706281A CN106706281A CN201610864515.5A CN201610864515A CN106706281A CN 106706281 A CN106706281 A CN 106706281A CN 201610864515 A CN201610864515 A CN 201610864515A CN 106706281 A CN106706281 A CN 106706281A
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- bolt
- moment
- torsion
- tested
- fastener
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a detecting instrument used for detecting the reasonable assembly torque of a fastener and a testing method. The detecting instrument comprises a fastener assembly torque detecting portion, a sensor, a connecting frame and a rack, and is characterized in that the fastener assembly torque detecting portion is connected to the sensor through the connecting frame, wherein one end of the sensor is fixed at the lower end of the connecting frame by a connecting bolt A, and the other end of the sensor is fixed at the lower end of the rack by a connecting bolt B; and the fastener assembly torque detecting portion is composed of a detected supporting block arranged at the upper end of the rack and a positioning block positioned on the connecting frame, the port end of a detected bolt is positioned in a limit slot in the positioning block, and the threaded end of the detected bolt penetrates through the detected supporting block and is fastened by a nut matched with the detected bolt. The detecting instrument is simple in structure and convenient to operate, a relation between the bolt assembly torque and an axial force can be tested, and tremendous accidents caused by a bolt connection failure because a pretightening force is excessive or insufficient are avoided.
Description
Technical field：
It is particularly a kind of for detecting that fastener rationally assembles torsion the present invention relates to be used for a kind of assembling torque detecting apparatus
The detecting instrument and its method of testing of square.
Background technology：
It is well known that fastener is the important connector in various engineering goods, be widely used in various vehicles, ship,
In the connection of construction steel structure, bridge and Aero-Space, for example：High ferro motor-car, steam power plant, hydro-electric power generating equipment, core
Electric equipment, wind power generating set equipment, metallurgical equipment, mining equiment, shipbuilding equipment, petrochemical equipment etc. have on thousands of
Ten thousand large-sized bolt is used for the connection of its key components and parts, and these bolts are required for being required according to design technology, using can be defeated
Hydraulic torque wrench, aerodynamic moment spanner, Electric torque wrench, manual torque spanner or the torque multiplier for going out amount moment of torsion come
Tighten and dismantle, it is as far as possible identical with the pretightning force for ensuring each connecting bolt, it is ensured that equipment component is by effective, safe and reliable
Connection；Pretightning force is excessive and deficiency all easily causes Bolt Linkage Inactivation, causes a serious accident.
I is engaged in failure analysis and works more than 30 years, by the statistics to fastener failure case, because fastener assembling is pre-
The improper failure for causing of clamp force, accounts for more than the 20% of fastener failure, causes the problem that fastener fails because bolts assemblies
Afterwards, from stress to disrumpent feelings Fen Sange areas, one is elastic deformation area, and two is plastically deforming area, and three is eventual failure area, bolts assemblies
Pretightning force wish in regime of elastic deformation, it is contemplated that the safety coefficient of residence, standard GB/T16823.3-2010《Fastener
Moment of torsion-clamping force experiment》Standard specifies that its assembly pretightening power does not exceed the 75% of elastic limit, and such pretightning force institute is right
The assembling moment of torsion answered is how much to see depending on the frictional force size of bolt-connection system, that is, in bolt head bottom support surface and
Screw thread (size of frictional force between screw bolt and nut).Namely GB/T16823.2-1997《Threaded fastener fastens general rule》In
Supporting surface coefficient of friction and thread friction coefficient》To determine.But coefficient of friction is not unalterable, property of the residence by material
The property of matter, hardness, surface roughness and surface coating layer is determined, and can also be changed during force, and
GB/T16823.2-1997 standards specify that the data in the table of comparisons of the axle power and moment of torsion under two kinds of coefficient of friction are not complete, Er Qiejian
Survey two kinds of coefficient of friction highly difficult, while calculating how frictional force determines reasonably to assemble moment of torsion, produce and use the skill of unit
Not enough, automobile industry has been an empirical data standard QC/T518-2007 to art personnel ability, wherein also having many inaccurate
Data, so, blindness is compared in assembling process, hidden danger has been buried in the failure to bolt.
Such as in weapons portion in 2010 because tank armor car, and guided missile load automobile and produce fastener in cross-country training
Loosen and fail, it is desirable to which the joint Beijing Institute of Technology of machine group of packet header one is studied《The reasonable assembling moment of torsion of weapons fastener and pre-
The relation of clamp force》, have no resolution so far.And how accurately to exert a force be at present each use unit a great problem.
Although in the market has a test apparatus of this detection of special moment of torsion, mostly domestic comparing is German Test public affairs
Take charge of the T205 type screw threads for fastening performance aircrafts of production, the machine market price 1,000,000 --- 150 contingency platforms, it is mainly large-scale
The research of enterprise is used, and actually used unit is seldom bought, and one is price；Two is inconvenient operation；Three is to test and real
There is relative error in border assembling stressing conditions；And the T205 type screw threads for fastening performance aircrafts that Germany produces, screw thread group can only be detected
Part, and the actual working face by fastenings is detected and had any problem.
In sum, as long as measuring the relation of assembling moment of torsion and axle power, it becomes possible to accurate force, it is to avoid pretightning force it is excessive and
Deficiency all easily causes Bolt Linkage Inactivation, causes a serious accident, you can solve above-mentioned a series of problems.
The content of the invention：
The present invention be directed to the problem in background technology, propose for a kind of for detecting that fastener rationally assembles the inspection of moment of torsion
Instrument is surveyed, simple structure is easy to operate, the relation of bolts assemblies moment of torsion and axle power can be measured, it is to avoid pretightning force is excessive and deficiency
Bolt Linkage Inactivation is all easily caused, is caused a serious accident.
The present invention is adopted the following technical scheme that to solve above technical problem：One kind is for detecting that fastener is rationally assembled
The detecting instrument of moment of torsion, including fastener assembling moment of torsion test section, sensor, connection frame and frame, it is characterised in that described tight
Firmware assembles moment of torsion test section and connects sensor by connecting frame, wherein, sensor one end attachment bolt A is fixed on company
The lower end of frame is connect, other end attachment bolt B is separately fixed at the lower end of frame；The fastener assembles moment of torsion test section by setting
The tested support block and the locating piece composition being positioned on connection frame in frame upper end are put, tested bolt band port end is positioned at
In stopper slot on the block of position, threaded end passes through tested support block and is screwed tight admittedly with what is matched with tested bolt, when using, leads to
Cross torque wrench input torque and tighten the tested bolt of nut fastening, tested bolt is pulled up to be close to and connects frame, so that the company of being fixed on
Connect and opposite change in displacement is produced between the attachment bolt A on frame lower end and the attachment bolt B that is fixed in frame, and by opposite position
The data for moving change change into the axial grip force data of tested bolt on a sensor.
It is of the invention for detecting that the structure that fastener rationally assembles the detecting instrument of moment of torsion is using above technical scheme
Nut is tightened by torque wrench input torque and fastens tested bolt, tested bolt is pulled up to be close to and connects frame, so that being fixed on
Opposite change in displacement is produced between attachment bolt A on connection frame lower end and the attachment bolt B being fixed in frame, and will be opposite
The data of change in displacement change into the axial grip force data of tested bolt on a sensor, and know-why of the invention is to survey
Go out to assemble the relation of moment of torsion and axle power, and according to the assembling moment of torsion and the relation of axle power for detecting, there is provided used to fastener single
Position and the suitable assembling moment of torsion of designer's selection, determine the installation quality of fastener.It is described as preferred scheme of the invention
It is the pad of 39mm × 39mm × 10mm to be detected support block, and the endoporus that tested bolt matches, endoporus are provided with the middle of the pad
Diameter is slightly larger than the tested diameter of bolt；And manufacture the material of the detected support block and Jie is fastened used by tested bolt
Matter supporting surface material has same rigidity and identical so that present invention coefficient of friction during force is consistent with scene
Property, and can reasonably determine to assemble moment of torsion.
Using the technical scheme of the above, detection support block of the invention is the pad of 39mm × 39mm × 10mm, is so dropped
Low manufacturing cost, and manufacture the material of the detected support block and dielectric support facestock material is fastened used by tested bolt and have
Same rigidity and identical roughness, reduce experiment and practical set stressing conditions have relative error, improve detection
Precision.
Used as preferred scheme of the invention, the frame includes upper padding plate, lower bolster and two pieces of symmetrically arranged side backing plates
The quadra of composition, wherein, the upper padding plate is provided with the supporting surface groove matched with tested support block.
Using above technical scheme, frame of the present invention includes upper padding plate, lower bolster and two pieces of symmetrically arranged side pads
The quadra of plate composition so that the present invention assembles up simple and convenient, is easy to carry, and can be placed directly in easy mode
Erecting yard, coordinates torque wrench manual inspection, it is also possible to which putting laboratory carries out automatic detection, can be with Site Detection, and institute
State upper padding plate and be provided with the supporting surface groove matched with tested support block, further increase experiment and practical set stress feelings
There is relative error in condition, improve the precision of detection.
The present invention also provides a kind of for detecting that fastener rationally assembles the detector of moment of torsion to solve above technical problem
The method of testing of device, it is characterised in that the first step is first according to by the material and same rigidity and phase of the supporting surface of fastening medium
With roughness, be made the pad of length, width and height respectively 39mm × 39mm × 10mm, and the pad endoporus be sized slightly larger than by
The inspection diameter of bolt；Second step is that tested spiral shell inspection port end is positioned on locating piece, and the other end passes through tested support block and nut
Connection is assembled (or by connected body internal thread machining squarely nut)；3rd step is that selection is adapted to tested bolt torque
Torque wrench, the 4th step is the abutment sleeve that selection is adapted to tested bolt specification；5th step is, with torque wrench in tested spiral shell
Exerted a force step by step on bolt, and read corresponding moment of torsion and clamping force in the instrument of instrument simultaneously, and be recorded as《Moment of torsion and folder
The mapping table of clamp force》；6th step is the design grade according to bolt, is tabled look-up according to GB/T3098.1-2010 standards and found out
The guarantee load of bolt, and ensure that the requirement of load is calculated by GB/T16823.3-2010 selection assemblings clamping force=0.7-0.8
Go out clamping force scope (can also by design need set clamping force), and according to《The mapping table of moment of torsion and axle power》Find out
Rationally assemble the scope of moment of torsion；Final step is assembled in situ, and the moment of torsion of bolts assemblies instrument is set according to above-mentioned result of the test
Scope is normally assembled.
Using the method for the technical scheme of the above, operating method is simple, and common assembler can operate, easy operation
User can be avoided accident occur, reduce the disaster of failure.
Brief description of the drawings：
Fig. 1 is structural representation of the invention；
Fig. 2 is the mapping table of moment of torsion of the invention and clamping force；
Fig. 3 is the mapping table of moment of torsion of the invention and axle power.
Specific embodiment：
The present invention is described further below in conjunction with the accompanying drawings.
Refer to the schematic diagram that accompanying drawing is structure of the invention.It is of the invention a kind of for detecting that fastener rationally assembles moment of torsion
Detecting instrument, including fastener assembling moment of torsion test section, sensor (9), connection frame (6) and frame, it is characterised in that described
Fastener assembles moment of torsion test section and connects sensor (9) by connecting frame (6), wherein, described sensor (9) one end connection spiral shell
Bolt A (7) is fixed on the lower end of connection frame (6), and other end attachment bolt B (10) is separately fixed at the lower end of frame；It is described tight
Firmware assembles moment of torsion test section by being arranged on the tested support block (2) of frame upper end and being positioned at the locating piece connected on frame (6)
(4) constitute, tested bolt (5) port end is positioned in the stopper slot on locating piece (4), threaded end passes through tested support block
(2) and with the nut (1) matched with tested bolt (5) fasten, when using, nut is tightened by torque wrench input torque
(1) tested bolt (5) is fastened, tested bolt (5) is pulled up to be close to and connects frame (6), so that being fixed on connection frame (6) lower end
Opposite change in displacement is produced between attachment bolt A (7) and the attachment bolt B (10) being fixed in frame, and opposite displacement is become
The data of change change into the axial grip force data of tested bolt (5) on sensor (9)；It is of the invention for detecting fastener
Rationally the structure of the detecting instrument of assembling moment of torsion is to tighten nut (1) by torque wrench input torque to fasten tested bolt (5),
Tested bolt (5) is pulled up to be close to and connects frame (6), so that being fixed on the attachment bolt A (7) connected on frame (6) lower end and fixing
Opposite change in displacement is produced between attachment bolt B (10) in frame, and by the data of opposite change in displacement in sensor (9)
On change into the axial grip force data of tested bolt (5), know-why of the invention is to measure assembling moment of torsion and axle power
Relation, and according to the assembling moment of torsion and the relation of axle power for detecting, there is provided select to close using unit and designer to fastener
Suitable assembling moment of torsion, really promotees the installation quality of fastener.Used as preferred scheme of the invention, the detected support block (2) is
The pad of 39mm × 39mm × 10mm, is provided with the endoporus that tested bolt (5) matches in the middle of the pad, diameter of bore size is slightly larger
In tested bolt (5) diameter；And manufacture the material and tested bolt (5) fastening medium used of the detected support block (2)
Supporting surface material has same rigidity and identical so that the present invention during force coefficient of friction with live uniformity,
And can reasonably determine to assemble moment of torsion.
Using the technical scheme of the above, detection support block (2) of the invention is the pad of 39mm × 39mm × 10mm, so
Manufacturing cost is reduced, and manufactures the material and tested bolt (5) fastening dielectric support used of the detected support block (2)
Facestock material has same rigidity and identical roughness, reduces experiment and practical set stressing conditions have relative error, carries
The precision of high detection.
Used as preferred scheme of the invention, the frame (8) symmetrically sets including upper padding plate (3), lower bolster (11) and two pieces
The quadra of side backing plate (8) composition put, wherein, the upper padding plate (3) is provided with the branch matched with tested support block (2)
Support face groove, frame (8) of the present invention includes upper padding plate (3), lower bolster (11) and two pieces of symmetrically arranged side backing plate (8) groups
Into quadra so that the present invention assembles up simple and convenient, is easy to carry, and can be placed directly in assembling with easy mode
Scene, coordinates torque wrench manual inspection, it is also possible to which putting laboratory carries out automatic detection, can with Site Detection, and it is described on
Backing plate (3) is provided with the supporting surface groove matched with tested support block (2), further increases experiment and practical set stress
There is relative error in situation, improve the precision of detection.
The present invention also provides a kind of for detecting that fastener rationally assembles the detector of moment of torsion to solve above technical problem
The method of testing of device：The first step first according to by the material and same rigidity and identical roughness of the supporting surface of fastening medium,
The pad of length, width and height respectively 39mm × 39mm × 10mm is made, and the endoporus of the pad is sized slightly larger than tested bolt (5) directly
Footpath.
Second step is that tested bolt (5) port end is positioned on locating piece (4), and the other end passes through tested support block (2)
Couple with nut (1) and assembled.
3rd step is the torque wrench that selection is adapted to tested bolt (5) moment of torsion.
4th step is the abutment sleeve that selection is adapted to tested bolt (5) specification.
5th step is exerted a force step by step on tested bolt (5) with torque wrench, and the reading on sensor (9) simultaneously
Go out corresponding moment of torsion and clamping force, and be recorded as such as accompanying drawing 2《The mapping table of moment of torsion and clamping force》.
6th step is the design grade according to bolt, is tabled look-up according to GB/T3098.1-2010 standards and finds out the guarantee of bolt
Load, and press《Assembling clamping force=0.7-0.8 ensures load》Requirement calculate the scope of clamping force, and with reference to the accompanying drawings in 3
's《The mapping table of moment of torsion and axle power》Find out the scope of rationally assembling moment of torsion.
Final step is assembled in situ, is normally filled according to the torque range of above-mentioned result of the test setting bolts assemblies instrument
Match somebody with somebody.
Claims (4)
1. a kind of for detecting that fastener rationally assembles the detecting instrument of moment of torsion, including fastener assembling moment of torsion test section, sensing
Device (9), connection frame (6) and frame, it is characterised in that the fastener assembling moment of torsion test section connects biography by connecting frame (6)
Sensor (9), wherein, the sensor (9) one end attachment bolt A (7) is fixed on the lower end of connection frame (6), other end connection
Connecting bolt B (10) is separately fixed at the lower end of frame；The fastener assembles moment of torsion test section by being arranged on the quilt of frame upper end
Inspection support block (2) and locating piece (4) composition being positioned in connection frame (6), tested bolt (5) port end is positioned at locating piece
(4) in the stopper slot on, threaded end is through tested support block (2) and tight with the nut (1) matched with tested bolt (5)
Gu, when using, nut (1) is tightened by torque wrench input torque and fastens tested bolt (5), it is detected bolt (5) and tenses upwards
Connection frame (6), so that the attachment bolt A (7) being fixed on connection frame (6) lower end and attachment bolt B being fixed in frame
(10) opposite change in displacement is produced between, and the data of opposite change in displacement is changed into tested bolt (5) on sensor (9)
Axial grip force data.
2. it is as claimed in claim 1 a kind of for detecting that fastener rationally assembles the detecting instrument of moment of torsion, it is characterised in that institute
It is the pad of 39mm × 39mm × 10mm to state detected support block (2), and be provided with that tested bolt (5) matches in the middle of the pad is interior
Hole, diameter of bore is sized slightly larger than tested bolt (5) diameter；And manufacture the material of the detected support block (2) and be detected
Bolt (5) fastening dielectric support facestock material used has same rigidity and identical roughness.
3. it is as claimed in claim 1 a kind of for detecting that fastener rationally assembles the detecting instrument of moment of torsion, it is characterised in that institute
Stating frame (8) includes upper padding plate (3), lower bolster (11) and two pieces of quadras of symmetrically arranged side backing plate (8) composition, its
In, the upper padding plate (3) is provided with the supporting surface groove matched with tested support block (2).
4. it is a kind of for detecting that fastener rationally assembles the method for testing of the detecting instrument of moment of torsion, it is characterised in that first step elder generation
According to by the material and same rigidity and identical roughness of the supporting surface of fastening medium, be made length, width and height respectively 39mm ×
The pad of 39mm × 10mm, and the endoporus of the pad is sized slightly larger than tested bolt (5) diameter；Second step is by tested bolt
(5) port end is positioned on locating piece (4), and the other end passes through tested support block (2) to couple with nut (1) and assembled；3rd
Step is the torque wrench that selection is adapted to tested bolt (5) moment of torsion, and the 4th step is the positioning sleeve that selection is adapted to tested bolt (5) specification
Cylinder；5th step is exerted a force step by step on tested bolt (5) with torque wrench, and is read on sensor (9) simultaneously corresponding
Moment of torsion and clamping force, and be recorded as《The mapping table of moment of torsion and clamping force》；6th step is the design grade according to bolt,
Tabled look-up according to GB/T3098.1-2010 standards and find out the guarantee load of bolt, and pressed《Assembling clamping force=0.7-0.8 ensures to carry
Lotus》Requirement calculate the scope of clamping force, and according to《The mapping table of moment of torsion and axle power》Find out and rationally assemble moment of torsion
Scope；Final step is assembled in situ, is normally assembled according to the torque range of above-mentioned result of the test setting bolts assemblies instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610864515.5A CN106706281A (en) | 2016-09-28 | 2016-09-28 | Detecting instrument used for detecting reasonable assembly torque of fastener and testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610864515.5A CN106706281A (en) | 2016-09-28 | 2016-09-28 | Detecting instrument used for detecting reasonable assembly torque of fastener and testing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106706281A true CN106706281A (en) | 2017-05-24 |
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ID=58940368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610864515.5A Pending CN106706281A (en) | 2016-09-28 | 2016-09-28 | Detecting instrument used for detecting reasonable assembly torque of fastener and testing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106706281A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107389324A (en) * | 2017-07-06 | 2017-11-24 | 北京汽车股份有限公司 | Semiaxis assembling detection device |
| CN108168762A (en) * | 2017-12-28 | 2018-06-15 | 四川中核艾瑞特工程检测有限公司 | A kind of auxiliary device for measuring torque coefficient of bolt |
| CN110220686A (en) * | 2019-06-26 | 2019-09-10 | 上海电气集团上海电机厂有限公司 | Keep diesel oil synchronous generator rotor magnetic pole tie-rod power experimental rig and method |
| CN110926930A (en) * | 2019-12-25 | 2020-03-27 | 中国航空工业集团公司西安飞机设计研究所 | Torsion-tension relation measuring device and method for aircraft stud structure |
| CN112296714A (en) * | 2020-11-11 | 2021-02-02 | 许昌学院 | Novel clamp for machining parts of precision machine tool |
| CN114577394A (en) * | 2022-03-04 | 2022-06-03 | 北京理工大学 | Bolt fastening axial tensile stress detection calibration method and device |
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| CN105784249A (en) * | 2016-03-28 | 2016-07-20 | 北京理工大学 | Measuring device and method for torsion-tension relation of threaded structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107389324A (en) * | 2017-07-06 | 2017-11-24 | 北京汽车股份有限公司 | Semiaxis assembling detection device |
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| CN108168762A (en) * | 2017-12-28 | 2018-06-15 | 四川中核艾瑞特工程检测有限公司 | A kind of auxiliary device for measuring torque coefficient of bolt |
| CN108168762B (en) * | 2017-12-28 | 2020-11-10 | 四川中核艾瑞特工程检测有限公司 | Auxiliary device for measuring torque coefficient of bolt |
| CN110220686A (en) * | 2019-06-26 | 2019-09-10 | 上海电气集团上海电机厂有限公司 | Keep diesel oil synchronous generator rotor magnetic pole tie-rod power experimental rig and method |
| CN110926930A (en) * | 2019-12-25 | 2020-03-27 | 中国航空工业集团公司西安飞机设计研究所 | Torsion-tension relation measuring device and method for aircraft stud structure |
| CN112296714A (en) * | 2020-11-11 | 2021-02-02 | 许昌学院 | Novel clamp for machining parts of precision machine tool |
| CN114577394A (en) * | 2022-03-04 | 2022-06-03 | 北京理工大学 | Bolt fastening axial tensile stress detection calibration method and device |
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Application publication date: 20170524 |