CN208606915U - A kind of measuring device of steel tube component twin shaft residual stress - Google Patents
A kind of measuring device of steel tube component twin shaft residual stress Download PDFInfo
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- CN208606915U CN208606915U CN201821485507.0U CN201821485507U CN208606915U CN 208606915 U CN208606915 U CN 208606915U CN 201821485507 U CN201821485507 U CN 201821485507U CN 208606915 U CN208606915 U CN 208606915U
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- residual stress
- twin shaft
- steel tube
- tube component
- resistance strain
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Abstract
The utility model discloses a kind of measuring devices of steel tube component twin shaft residual stress, including twin shaft resistance strain gage, strain acquirement instrument, terminal, protection silica gel and conducting wire, aiming at the problem that traditional residual stress measurement device can not accurately obtain complicated twin shaft residual stress in steel tube component, it proposes and pastes twin shaft resistance strain gage in steel tube component surfaces externally and internally, and it is combined with strain acquirement instrument, the measuring device of complex residual stress in a kind of steel tube component of formation.When making that residual stress is released at measuring point using the techniques such as wire cutting, which can be accurately tracked by the overall process of residual stress release.The device can be widely applied to the measurement of residual stress in the metal pipe members such as steel, stainless steel and aluminium alloy, be beneficial to the influence for improving steel tube component moulding process, probing into residual stress to behavior of members under loading.
Description
Technical field
The utility model belongs to steel construction experimental technique field, and in particular to a kind of survey of steel tube component twin shaft residual stress
Measure device.
Background technique
Residual stress is a kind of self balancing stress being widely present in steel tube component, to the moulding process and stress of component
There are large effects for energy etc., are the emphasis of mechanical and civil engineering subject concern.Traditional residual stress measuring method (such as cut
Method and Blind Hole Method), it is only applicable to component and is in simple residual stress state (such as based on longitudinal membrane stress) and surface residual
The measurement of stress.However, being influenced by moulding process, vertical and horizontal membrane stress, longitudinal direction and cross are usually contained in steel tube component
To bending stress, in complicated twin shaft residual stress state, thus traditional residual stress measuring method can not be carried out it accurately
Measurement.
Summary of the invention
The utility model, which is directed to traditional residual stress measuring method, can not accurately measure complicated twin shaft remnants in steel tube component
Stress problem proposes a kind of measuring device of steel tube component twin shaft residual stress, can accurately measure steel tube component measured point
Locate the twin shaft residual stress of surfaces externally and internally, the overall process of tracking residual stress release, mechanical meaning is clear, and equipment is simple, practical.
In order to achieve the above object, the technical solution of the utility model is as follows:
A kind of measuring device of steel tube component twin shaft residual stress, including twin shaft resistance strain gage, strain acquirement instrument, end
Son, protection silica gel and conducting wire, the twin shaft resistance strain gage is three lead twin shaft resistance strain gages, vertically arranged comprising two
Sensitive grid, and be attached respectively with two Measurement channels in strain acquirement instrument using 1/4 bridge by conducting wire, the protection silicon
Glue equably covers twin shaft resistance strain gage.
When making that residual stress is released in lath locating for measuring point using the techniques such as wire cutting, the twin shaft resistance-strain
Piece can accurately obtain the twin shaft residual stress at measuring point and record overall process strain data.
Further, twin shaft resistance strain gage is securely pasted in the surfaces externally and internally of component measuring point, one of sensitive grid edge
The axis direction of component, another sensitive grid along component circumferential direction；
Further, the arrangement in component cross section of twin shaft resistance strain gage should be with residual stress distribution gradient in component
And cross section geometry is mutually coordinated；
Further, twin shaft resistance strain gage should stick in the midpoint of width of sheet to be cut locating for measuring point, the width of lath
Degree is no less than 4 times of sensitive grid width；
Further, twin shaft resistance strain gage should stick in the midpoint of stave lengths to be cut locating for measuring point, the length of lath
Degree is no less than 6 times of width of sheet；
Further, the length of measuring point to component ends is no less than 1.5 times of member section maximum height；
Further, the variation that should not cause lath temperature in lath cutting process, preferably uses wire cutting.
Further, strain acquirement instrument connects temperature-compensating plate.
The beneficial effects of the utility model are:
The utility model is of simple structure and low cost, easy to use, can accurately measure inside and outside at steel tube component measured point
The twin shaft residual stress on surface, and the overall process of residual stress release can be tracked, it can be widely applied to steel, stainless steel and aluminium and close
The measurement of residual stress in the metal pipe members such as gold is beneficial to improve steel tube component moulding process, probes into residual stress to component
The influence etc. of stress performance.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of residual stress measurement device.
Fig. 2 is the working state figure of residual stress measurement device.
Reference signs list:
Twin shaft resistance strain gage 1；Strain acquirement instrument 2；Terminal 3；Protect silica gel 4；Conducting wire 5；Temperature-compensating plate 6；Sensitive grid
7；Tested steel member 8；Wire cutting path 9.
Specific embodiment
With reference to the accompanying drawings and detailed description, the utility model is furtherd elucidate, it should be understood that following specific embodiment parties
Formula is merely to illustrate the utility model rather than limitation the scope of the utility model.It should be noted that making in being described below
Word "front", "rear", "left", "right", "up" and "down" refer to that the direction in attached drawing, word "inner" and "outside" respectively refer to
Be directed towards or far from geometric center of specific component direction.
As depicted in figs. 1 and 2, in steel tube component before residual stress measurement, according to point of residual stress in tested steel member 8
Cloth gradient and the geometric dimension in section determine the model of twin shaft resistance strain gage 1 and the length of point layout and tested steel member 8,
Twin shaft resistance strain gage sticks in the midpoint of width of sheet to be cut locating for measuring point, and the width of lath is not less than sensitive grid width
4 times；Twin shaft resistance strain gage should stick in the midpoint of stave lengths to be cut locating for measuring point, and the length of lath is not less than lath
6 times of width；Measuring point is not less than 1.5 times of member section maximum height to the length of steel tube component end.
Twin shaft resistance strain gage 1 is pasted into the surfaces externally and internally in tested 8 measuring point of steel member, one sensitive grid 7 when use
Along the axis direction of tested steel member 8, another sensitive grid, will be double using protection silica gel 4 along the circumferential direction of tested steel member 8
Axial strain piece 1 uniformly wraps up, and twin shaft resistance strain gage 1 and terminal 3 and strain acquirement instrument 2 are then used 1/4 bridge by conducting wire 5
Road mode correctly connects, and connects temperature-compensating plate 6.After on-test, cut along wire cutting path 9, in lath
Residual stress release, causes the resistance variations of resistance strain gage, to obtain twin shaft residual stress and overall process strain data.
Technological means disclosed in the utility model is not limited only to technological means disclosed in above embodiment, also
Including technical solution consisting of any combination of the above technical features.
Claims (6)
1. a kind of measuring device of steel tube component twin shaft residual stress, including twin shaft resistance strain gage (1), strain acquirement instrument (2),
Terminal (3), protection silica gel (4) and conducting wire (5), it is characterised in that: two sensitive grids of the twin shaft resistance strain gage (1) are in 90
Degree is arranged vertically, and the twin shaft resistance strain gage (1) uses 1/4 bridge by terminal (3) and conducting wire (5) and strain acquirement instrument (2)
Road mode connects, and the protection silica gel (4) equably covers twin shaft resistance strain gage (1).
2. a kind of measuring device of steel tube component twin shaft residual stress according to claim 1, which is characterized in that described double
Axis resistance strain gage (1) is three lead twin shaft resistance strain gages.
3. a kind of measuring device of steel tube component twin shaft residual stress according to claim 1, which is characterized in that described double
Axis resistance strain gage (1) is securely pasted in the surfaces externally and internally of tested component measuring point, and one of sensitive grid is along tested component
Axis direction, another sensitive grid along tested component circumferential direction.
4. a kind of measuring device of steel tube component twin shaft residual stress according to claim 1, which is characterized in that described double
Axis resistance strain gage (1) sticks in the width of lath to be cut locating for tested component measuring point and the midpoint of length, plate locating for measuring point
The width of item is not less than 4 times of sensitive grid width, and length is not less than 6 times of width of sheet.
5. a kind of measuring device of steel tube component twin shaft residual stress according to claim 1, which is characterized in that the quilt
The length for surveying component measuring point to tested component ends is not less than 1.5 times of section maximum height.
6. a kind of measuring device of steel tube component twin shaft residual stress according to claim 1, which is characterized in that described to answer
Become Acquisition Instrument and connects temperature-compensating plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821485507.0U CN208606915U (en) | 2018-09-12 | 2018-09-12 | A kind of measuring device of steel tube component twin shaft residual stress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821485507.0U CN208606915U (en) | 2018-09-12 | 2018-09-12 | A kind of measuring device of steel tube component twin shaft residual stress |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208606915U true CN208606915U (en) | 2019-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821485507.0U Active CN208606915U (en) | 2018-09-12 | 2018-09-12 | A kind of measuring device of steel tube component twin shaft residual stress |
Country Status (1)
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| CN (1) | CN208606915U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112729631A (en) * | 2020-12-30 | 2021-04-30 | 浙江合众新能源汽车有限公司 | Method for testing sealing force of automobile shock absorber |
| CN118150021A (en) * | 2024-05-11 | 2024-06-07 | 江苏宣胜金属科技有限公司 | Transverse residual stress detection equipment for seamless steel tube |
-
2018
- 2018-09-12 CN CN201821485507.0U patent/CN208606915U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112729631A (en) * | 2020-12-30 | 2021-04-30 | 浙江合众新能源汽车有限公司 | Method for testing sealing force of automobile shock absorber |
| CN118150021A (en) * | 2024-05-11 | 2024-06-07 | 江苏宣胜金属科技有限公司 | Transverse residual stress detection equipment for seamless steel tube |
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