CN107144376A - Bolt connecting hole side method for measuring stress and system - Google Patents
Bolt connecting hole side method for measuring stress and system Download PDFInfo
- Publication number
- CN107144376A CN107144376A CN201710347233.2A CN201710347233A CN107144376A CN 107144376 A CN107144376 A CN 107144376A CN 201710347233 A CN201710347233 A CN 201710347233A CN 107144376 A CN107144376 A CN 107144376A
- Authority
- CN
- China
- Prior art keywords
- measurement
- bolt
- nut
- subbolster
- hole side
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
Abstract
The present invention relates to bolt connecting hole side method for measuring stress and system.The bolt connecting hole side method for measuring stress includes：Foil gauge is pasted on the hole side on connected piece surface, strain measurement is carried out after stickup；In the hole that bolt is squeezed into the connected piece, strain measurement is carried out after squeezing into again；Measurement subbolster is set on the bolt, wherein, open up fluted in the measurement subbolster, the foil gauge is contained in the groove when being arranged, the measurement subbolster is depressed on the connected piece；Nut will be substituted to be arranged on the bolt, strain measurement is carried out after tightening again.The bolt connecting hole side method for measuring stress and system of the present invention can play following advantageous effects：Realize the accurate measurement of bolt connection around-the-hole stress.
Description
Technical field
The present invention relates to bolt connecting hole side method for measuring stress and system.
Background technology
In Standard, bolt connection is carried out frequently with interference engagement, to improve the fatigue behaviour of fastener hole structure.
In connection, in fact it could happen that the phenomenon that the factor such as amount of interference in gap and hole between connected piece deviates with design, and these are inclined
From can not eliminate again, it can only carry out forcing assembling.For deviateing assembling, how assembling structure stress and structural behaviour are clearly grasped
It is particularly important.
In order to obtain the hole-edge stress after bolts assemblies, it is necessary to which the accurate measurement in scene obtains around-the-hole stress.Mesh
Before there is literature research to show to calculate by numerical computation method and obtain around-the-hole stress, but numerical computations use aperture, bar
Still there is some difference with reality for the measurement of the parameters such as footpath, pretightning force, causes numerical computations to be still unable to accurate expression and truly ties
The intensity of structure.The reason for being additionally, since various space limitations and interfere (such as bolt head and nut are pressed in connected plate surface)
It is difficult to measure around-the-hole stress in structure at the scene.
For in-site measurement around-the-hole stress, some patents propose some schemes.For example, patent CN201510707570
(a kind of Tensile or Compressive Loading acts on the measuring method of the offline elastic plate elliptical aperture side factor of stress concentration), by preparing identical component
The stress measurement of circular hole is carried out, the stress concentration of elliptical aperture is calculated.Patent CN201120097942 be (composite open-celled structure
Around-the-hole stress detecting system), by being positioned to borehole circumference grating and measurement obtains stress.However, above-mentioned patent is all not
Solve the problem of original structure hole side nut area measure stress is assembled.
The content of the invention
Lack it is an object of the present invention to overcome existing bolt connecting hole side method for measuring stress and the above-mentioned of system
Fall into there is provided a kind of new bolt connecting hole side method for measuring stress and system, realize the accurate measurement of bolt connection around-the-hole stress.
The present invention object above realized by a kind of bolt connecting hole side method for measuring stress, the bolt connecting hole side
Method for measuring stress includes：
Foil gauge is pasted on the hole side on connected piece surface, strain measurement is carried out after stickup；
In the hole that bolt is squeezed into the connected piece, strain measurement is carried out after squeezing into again；
Measurement subbolster is set on the bolt, wherein, open up fluted in the measurement subbolster, be arranged
When the foil gauge is contained in the groove, make it is described measurement subbolster be depressed on the connected piece；
Nut will be substituted to be arranged on the bolt, strain measurement is carried out after tightening again..
According to above-mentioned technical proposal, bolt connecting hole side method for measuring stress of the invention can play following Advantageous effect
Really：Realize the accurate measurement of bolt connection around-the-hole stress.
It is preferred that bolt connecting hole side method for measuring stress also includes：The replacement nut is pulled down, by the measurement
Subbolster is pulled down, and removes the foil gauge, installs formal nut.
It is preferred that the measurement subbolster includes handle portion and is integrally formed at the boss portion of the handle portion, institute
Groove is stated to be opened in the boss portion.
It is preferred that when nut will be substituted on the bolt, buttressing the handle portion to prevent the measurement
Subbolster is rotated.
It is preferred that the replacement nut is identical with the formal nut.
The present invention object above also realized by a kind of bolt connecting hole side stress measurement system, the bolt connecting hole
Side stress measurement system includes：
Foil gauge, hole side of the strain gauge adhesion on connected piece surface；
Bolt, the bolt is driven into the hole of the connected piece；
Subbolster is measured, the measurement subbolster is set on the bolt, wherein, in the measurement subbolster
Open up fluted, the foil gauge is contained in the groove when being arranged, the measurement subbolster is depressed into described connected
On fitting；
Nut is substituted, the replacement nut is configured to：It is set on the bolt and is depressed into the measurement subbolster
After on the connected piece, the replacement nut is arranged on the bolt.
According to above-mentioned technical proposal, bolt connecting hole side stress measurement system of the invention can play following Advantageous effect
Really：Realize the accurate measurement of bolt connection around-the-hole stress.
It is preferred that bolt connecting hole side stress measurement system also includes formal nut, the formal nut is configured to：
After the replacement nut is pulled down, pulling down, remove the foil gauge measurement subbolster, the formal spiral shell is installed
It is female.
It is preferred that the measurement subbolster includes handle portion and is integrally formed at the boss portion of the handle portion, institute
Groove is stated to be opened in the boss portion.
It is preferred that when nut will be substituted on the bolt, buttressing the handle portion to prevent the measurement
Subbolster is rotated.
It is preferred that the replacement nut is identical with the formal nut.
Brief description of the drawings
Fig. 1 is the flow chart of the bolt connecting hole side method for measuring stress of one embodiment of the invention.
Fig. 2 is the schematic diagram of the bolt connecting hole side stress measurement system of one embodiment of the invention.
Fig. 3 is the stereogram of the measurement subbolster of the bolt connecting hole side stress measurement system of one embodiment of the invention.
Reference numerals list
1st, bolt
2nd, foil gauge
3rd, subbolster is measured
4th, connected piece
5th, nut is substituted
31st, handle portion
32nd, boss portion
33rd, groove
Embodiment
Embodiment of the invention explained below, it should be pointed out that in the specific descriptions of these embodiments
During, in order to carry out brief and concise description, this specification can not possibly be made in detail to all features of actual embodiment
Most description.It is to be understood that in the actual implementation process of any one embodiment, as in any one work
During journey project or design object, in order to realize the objectives of developer, in order to meet system it is related or business
The related limitation of industry, can usually make various specific decision-makings, and this can also be implemented from a kind of embodiment to another
Changed between mode.Although moreover, it is to be understood that effort made in this development process is probably complicated
And it is tediously long, but for one of ordinary skill in the art related to present disclosure, in the disclosure
The changes such as some designs, manufacture or the production that are carried out on the basis of the technology contents of exposure are conventional technology, no
It should be understood to that content of this disclosure is insufficient.
Unless otherwise defined, the technical term or scientific terminology used in claims and specification should be this hair
The ordinary meaning that the personage with general technical ability is understood in bright art.Present patent application specification and power
" first ", " second " that is used in sharp claim and similar word are not offered as any order, quantity or importance, and
It is used only to distinguish different parts.The similar word such as " one " or " one " is not offered as quantity limitation, but represents
In the presence of at least one.The similar word such as " comprising " or "comprising" means to appear in the element before " comprising " or "comprising"
Or object covers the element or object and its equivalent element for appearing in " comprising " or "comprising" presented hereinafter, it is not excluded that
Other elements or object.The similar word such as " connection " or " connected " is not limited to physics or machinery connection,
It is also not necessarily limited to direct or indirect connection.
Fig. 1 is the flow chart of the bolt connecting hole side method for measuring stress of one embodiment of the invention.Fig. 2 is that the present invention one is real
Apply the schematic diagram of the bolt connecting hole side stress measurement system of example.Fig. 3 is the bolt connection around-the-hole stress of one embodiment of the invention
The stereogram of the measurement subbolster of measuring system.
As Figure 1-3, included according to the bolt connecting hole side method for measuring stress of the present invention：
Foil gauge 2 is pasted on the hole side on connected piece 4 (for example, plate-like form) surface (according to demand, can ring stickup
Also can radially paste), data wire is connected after stickup and carries out strain measurement；
Bolt 1 is squeezed into in the hole of connected piece 4 (such as according to predetermined technological specification), strained again after squeezing into
Measurement (strain value that record interference engagement is produced)；
Measurement subbolster 3 is set on bolt 1, wherein, open up fluted 33, when being arranged in measurement subbolster 3
Foil gauge 4 is contained in groove 33, measurement subbolster 3 is depressed on connected piece 4；
Nut 5 will be substituted to be arranged on bolt 1 (such as according to the screw-down torque of predetermined technological specification), entered again after tightening
Row strain measurement (record strain value, that is, the hole side strain after assembling).
So, bolt connecting hole side method for measuring stress of the invention can realize the accurate survey of bolt connection around-the-hole stress
Amount.
Specifically, compared with prior art, the present invention is realized by using reeded measurement subbolster is opened up
The measurement of around-the-hole stress between nut and connected piece contact surface, efficiently solves the problem of around-the-hole stress can not be measured accurately；
The quantitative measurment of influence of the various deviations in assembling to around-the-hole stress is realized, the measured data of acquisition can be used for explaining engineering
Problem, is conducive to mounting bolt hole stress studies and control of product quality.
It is preferred that bolt connecting hole side method for measuring stress also includes：Nut 5 will be substituted to pull down, auxiliary mat will be measured
Plate 3 is pulled down, and removes foil gauge 4 (it is preferred that also handling the surface of connected piece 4), install formal nut (for example according to
Predetermined technological specification).
It is preferred that as shown in figure 3, measurement subbolster 3 includes handle portion 31 and is integrally formed at the convex of handle portion 31
Platform portion 32, groove 33 is opened in boss portion 32.
It is preferred that as Figure 2-3, when nut 5 will be substituted on bolt 1, buttressing handle portion 31 to prevent
Measurement subbolster 3 is rotated.
It is preferred that it is identical with formal nut to substitute nut 5.
That is, replacement nut 5 is the nut used temporarily, its material, screw thread, diameter etc. are consistent with formal nut.
It is preferred that as shown in figure 3, the endoporus and external diameter of boss portion 32 are respectively with substituting nut 5 (or formal nut)
Internal diameter and external diameter are consistent.It is preferred that as shown in figure 3, hole also is provided with measurement subbolster 3, so as to which auxiliary mat will be measured
Plate 3 is set on bolt 1, and the internal diameter in the hole is consistent with the internal diameter for substituting nut 5 (or formal nut).
As Figure 2-3, included according to the bolt connecting hole side stress measurement system of the present invention：
Foil gauge 2, foil gauge 2 is pasted onto the hole side on the surface of connected piece 4；
Bolt 1, bolt 1 is driven into the hole of connected piece 4；
Subbolster 3 is measured, measurement subbolster 3 is set on bolt 1, wherein, offered in measurement subbolster 3 recessed
Groove 33, makes foil gauge 2 be contained in groove 33 when being arranged, measurement subbolster 3 is depressed on connected piece 4；
Nut 5 is substituted, nut 5 is substituted and is configured to：It is set in measurement subbolster 3 on bolt 1 and is depressed into connected piece 4
After upper, substitute nut 5 and be arranged on bolt 1.
So, bolt connecting hole side stress measurement system of the invention can realize the accurate survey of bolt connection around-the-hole stress
Amount.
It is preferred that bolt connecting hole side stress measurement system also includes formal nut, formal nut is configured to：It will replace
Pulled down for nut 5, will be after measurement subbolster 3 pulls down, removes foil gauge 2, the formal nut of installation.
It is preferred that as shown in figure 3, measurement subbolster 3 includes handle portion 31 and is integrally formed at the convex of handle portion 31
Platform portion 32, groove 33 is opened in boss portion 32.
It is preferred that as Figure 2-3, when nut 5 will be substituted on bolt 1, buttressing handle portion 31 to prevent
Measurement subbolster 3 is rotated.
It is preferred that it is identical with formal nut to substitute nut 5.
Some exemplary embodiments are described above.It should be understood, however, that various modifications may be made.Example
Such as, if described technology is executed in different order and/or if in described system, framework, equipment or circuit
Component is combined and/or is substituted or supplemented by other component or its equivalent by different way, then can realize suitable knot
Really.Correspondingly, other embodiment is also fallen into scope of the claims.
Claims (10)
1. a kind of bolt connecting hole side method for measuring stress, including：
Foil gauge is pasted on the hole side on connected piece surface, strain measurement is carried out after stickup；
In the hole that bolt is squeezed into the connected piece, strain measurement is carried out after squeezing into again；
Measurement subbolster is set on the bolt, wherein, open up fluted in the measurement subbolster, make when being arranged
The foil gauge is contained in the groove, the measurement subbolster is depressed on the connected piece；
Nut will be substituted to be arranged on the bolt, strain measurement is carried out after tightening again.
2. bolt connecting hole side as claimed in claim 1 method for measuring stress, it is characterised in that also include：Substituted described
Nut is pulled down, and the measurement subbolster is pulled down, the foil gauge is removed, installs formal nut.
3. bolt connecting hole side as claimed in claim 1 method for measuring stress, it is characterised in that the measurement subbolster bag
Include handle portion and be integrally formed at the boss portion of the handle portion, the groove is opened in the boss portion.
4. bolt connecting hole side as claimed in claim 3 method for measuring stress, it is characterised in that be arranged on nut will be substituted
When on the bolt, buttress the handle portion to prevent the measurement subbolster from rotating.
5. bolt connecting hole side as claimed in claim 2 method for measuring stress, it is characterised in that the replacement nut with it is described
Formal nut is identical.
6. a kind of bolt connecting hole side stress measurement system, including：
Foil gauge, hole side of the strain gauge adhesion on connected piece surface；
Bolt, the bolt is driven into the hole of the connected piece；
Subbolster is measured, the measurement subbolster is set on the bolt, wherein, opened up in the measurement subbolster
It is fluted, the foil gauge is contained in the groove when being arranged, the measurement subbolster is depressed into the connected piece
On；
Nut is substituted, the replacement nut is configured to：It is set on the bolt and is depressed into described in the measurement subbolster
After on connected piece, the replacement nut is arranged on the bolt.
7. bolt connecting hole side as claimed in claim 6 stress measurement system, it is characterised in that also including formal nut, institute
Formal nut is stated to be configured to：By it is described replacement nut pull down, by it is described measurement subbolster pull down, remove the foil gauge it
Afterwards, the formal nut is installed.
8. bolt connecting hole side as claimed in claim 6 stress measurement system, it is characterised in that the measurement subbolster bag
Include handle portion and be integrally formed at the boss portion of the handle portion, the groove is opened in the boss portion.
9. bolt connecting hole side as claimed in claim 8 stress measurement system, it is characterised in that be arranged on nut will be substituted
When on the bolt, buttress the handle portion to prevent the measurement subbolster from rotating.
10. bolt connecting hole side as claimed in claim 7 stress measurement system, it is characterised in that the replacement nut and institute
State formal nut identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710347233.2A CN107144376A (en) | 2017-05-17 | 2017-05-17 | Bolt connecting hole side method for measuring stress and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710347233.2A CN107144376A (en) | 2017-05-17 | 2017-05-17 | Bolt connecting hole side method for measuring stress and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107144376A true CN107144376A (en) | 2017-09-08 |
Family
ID=59777751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710347233.2A Pending CN107144376A (en) | 2017-05-17 | 2017-05-17 | Bolt connecting hole side method for measuring stress and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107144376A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596249A (en) * | 2018-11-29 | 2019-04-09 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | A kind of mechanical connecting structure pin load distribution measurement test method |
| CN115031885A (en) * | 2022-06-02 | 2022-09-09 | 浙江维思无线网络技术有限公司 | Bolt fastening force monitoring device and monitoring method thereof |
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|---|---|---|---|---|
| CN202018351U (en) * | 2011-04-07 | 2011-10-26 | 郑州大学 | Pore edge stress detection system of composite open pore structure |
| CN104359595A (en) * | 2014-11-07 | 2015-02-18 | 大连理工大学 | System and method for indirectly measuring stress distribution of assembly combined surfaces |
| CN104794299A (en) * | 2015-04-29 | 2015-07-22 | 西北工业大学 | Method for calculating stress distribution of composite interference fit connector |
| CN105509953A (en) * | 2016-02-01 | 2016-04-20 | 苏州长菱测试技术有限公司 | Test method and device for screw stress under dynamic state |
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2017
- 2017-05-17 CN CN201710347233.2A patent/CN107144376A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202018351U (en) * | 2011-04-07 | 2011-10-26 | 郑州大学 | Pore edge stress detection system of composite open pore structure |
| CN104359595A (en) * | 2014-11-07 | 2015-02-18 | 大连理工大学 | System and method for indirectly measuring stress distribution of assembly combined surfaces |
| CN104794299A (en) * | 2015-04-29 | 2015-07-22 | 西北工业大学 | Method for calculating stress distribution of composite interference fit connector |
| CN105509953A (en) * | 2016-02-01 | 2016-04-20 | 苏州长菱测试技术有限公司 | Test method and device for screw stress under dynamic state |
Non-Patent Citations (2)
| Title |
|---|
| 段苗苗等: "孔挤压过程中孔边应力应变演化规律的试验与模拟研究", 《工程力学》 * |
| 陈建霖等: "大开口复合材料层合板孔边应力集中实验研究", 《北京力学会第21届学术年会暨北京振动工程学会第22届学术年会》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596249A (en) * | 2018-11-29 | 2019-04-09 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | A kind of mechanical connecting structure pin load distribution measurement test method |
| CN115031885A (en) * | 2022-06-02 | 2022-09-09 | 浙江维思无线网络技术有限公司 | Bolt fastening force monitoring device and monitoring method thereof |
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| PB01 | Publication | ||
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Application publication date: 20170908 |