CN202719938U - Measuring tool for measuring load loading center distance of test specimen in fatigue performance tests - Google Patents
Measuring tool for measuring load loading center distance of test specimen in fatigue performance tests Download PDFInfo
- Publication number
- CN202719938U CN202719938U CN 201220292137 CN201220292137U CN202719938U CN 202719938 U CN202719938 U CN 202719938U CN 201220292137 CN201220292137 CN 201220292137 CN 201220292137 U CN201220292137 U CN 201220292137U CN 202719938 U CN202719938 U CN 202719938U
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- China
- Prior art keywords
- loads
- centre distance
- base plate
- test sample
- property test
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Abstract
The utility model discloses a measuring tool for measuring the load loading center distance of a test specimen in fatigue performance tests. The measuring tool comprises a baseboard (1), a positioning pillar (2) which is vertical to the plane of the baseboard (1), a polygonal pyramid (4) which is sleeved onto the positioning pillar (2), and an indicating baffle (5) which is placed on the baseboard (1) and can be moved relative to the baseboard. At least one edge of the surface of the baseboard (1) is provided with scale marks (3) for marking the length, wherein the starting line of the scale marks (3) coincides with the centre line of the positioning pillar (2). Prior to the measurement, a test specimen (6) in which a pin hole is formed is placed on the baseboard (1), and then the center of the pin hole coincides with the center of the positioning pillar (2) through the reliable inner connection of the polygonal pyramid (4) and the pin hole, and the indicating baffle (5) is pressed against the edge of the test specimen (6) so as to indicate the scale value of the load loading center distance.
Description
Technical field
The utility model relates to the survey instrument that a kind of fatigue property test sample load loads centre distance, and the sample load that relates in particular to a kind of Fracture of Metal Material toughness test loads the survey instrument of centre distance.
Background technology
In the plain fatigue performance test such as fracture toughness test of metal material, the sample that uses is made bulk, have the pin-and-hole that cooperates with bearing pin on the sample, test load is put on the sample through pin-and-hole by bearing pin, the distance at the center of pin-and-hole to sample edge is that load loads centre distance, it is the important parameter of calculating stress strength factor value that load loads centre distance, because load loads centre distance and iterated in computation process, so the measuring accuracy of load loading centre distance is larger on the result of calculation impact; Load loads and obtains after centre distance is measured calculating indirectly with vernier caliper now, concrete measuring method is: the diameter of at first measuring pin-and-hole, the radius value of extrapolating adds that the pin-and-hole edge is to the measured value of the distance at sample edge, obtain load and load centre distance, this measuring method is because the vernier caliper measuring point is not necessarily accurate, lean on operator's experience, there is larger measuring error, owing to indirectly measuring, has cumulative errors in addition.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of measuring point accurately and can directly measures the survey instrument that the fatigue property test sample load loads centre distance.
For solving the problems of the technologies described above, a kind of fatigue property test sample load of the present utility model loads the survey instrument of centre distance, it is characterized in that: comprise base plate, vertically be fixed in base plate plane reference column, be sleeved on the described reference column polygonal pyramid be placed on base plate on the indication baffle plate that can move relative to base plate, at least one edge, the surface of described base plate is shaped with scale mark, the start line of described scale mark and the central lines of described reference column that indicates length.
Described polygonal pyramid is rectangular pyramid, pentagonal pyramid or hexagonal pyramid.
The quality of fit of described polygonal pyramid and reference column is equal to or higher than H7/g6.
The digital display screen that the measured value that capacitor grid transducer is housed on the described indication baffle plate and described capacitor grid transducer can be transmitted directly shows.
The utility model has following good effect than prior art, fatigue property test sample load of the present utility model loads the survey instrument of centre distance, the sample that will have first pin-and-hole before the measurement is placed on the base plate and described pin-and-hole is enclosed within on the reference column, then described polygonal pyramid cover is installed on the reference column, until polygonal pyramid and described pin-and-hole can innerly connect, this moment pin-and-hole center and reference column center superposition, when leaning against the sample edge that needs measurement with indication baffle plate one side bumper at last, the position that the sideline of indication baffle plate is parked on the base plate scale mark is exactly that load loads centre distance, therefore, can directly measure the distance at the center of pin-and-hole to sample edge with this survey instrument.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the schematic diagram that fatigue property test sample load of the present utility model loads the survey instrument of centre distance.
Fig. 2 is the attached schematic diagram of looking of Fig. 1.
Fig. 3 is the cross-sectional schematic of the polygonal pyramid of the fatigue property test sample load of the present utility model survey instrument that loads centre distance.
Fig. 4 is the use schematic diagram that fatigue property test sample load of the present utility model loads the survey instrument of centre distance.
Fig. 5 is the former measuring method schematic diagram that the fatigue property test sample load loads centre distance.
Among the figure: 1. base plate, 2. reference column, 3. scale mark, 4. polygonal pyramid, 5. indication baffle plate, 6. sample.
Embodiment
Fig. 1 to Fig. 4 shows the survey instrument that fatigue property test sample load of the present utility model loads centre distance.It is characterized in that: comprise base plate 1, vertically be fixed in base plate 1 plane reference column 2, be sleeved on the described reference column 2 polygonal pyramid 4 be placed on base plate 1 on the indication baffle plate 5 that can move relative to base plate, at least one edge, the surface of described base plate 1 is shaped with the scale mark 3 that indicates length, the central lines of the start line of described scale mark 3 and described reference column 2.
Described polygonal pyramid 4 is rectangular pyramid, pentagonal pyramid or hexagonal pyramid.
Described polygonal pyramid 4 is equal to or higher than H7/g6 with the quality of fit of reference column 2.
In a most preferred embodiment, the direct digital display screen that shows of measured value that capacitor grid transducer is housed on the described indication baffle plate 5 and described capacitor grid transducer can be transmitted.
Fig. 5 is the former measuring method schematic diagram that the fatigue property test sample load loads centre distance.Former load loads and obtains after centre distance is measured calculating indirectly with vernier caliper, concrete measuring method is: the diameter D1 that at first measures the pin-and-hole on the sample 6, the radius value of extrapolating pin-and-hole adds that the pin-and-hole edge is to the measured value D2 of the distance at sample 6 edges, obtain load and load centre distance W value, this measuring method is because the vernier caliper measuring point is not necessarily accurate, lean on operator's experience, there is larger measuring error, owing to indirectly measuring, has cumulative errors in addition.
Claims (5)
1. the fatigue property test sample load loads the survey instrument of centre distance, it is characterized in that: comprise base plate (1), vertically be fixed in base plate (1) plane reference column (2), be sleeved on the described reference column (2) polygonal pyramid (4) be placed on the upper indication baffle plate (5) that can move relative to base plate of base plate (1), at least one edge, surface of described base plate (1) is shaped with the scale mark (3) that indicates length, the central lines of the start line of described scale mark (3) and described reference column (2).
2. fatigue property test sample load according to claim 1 loads the survey instrument of centre distance, and it is characterized in that: described polygonal pyramid (4) is rectangular pyramid, pentagonal pyramid or hexagonal pyramid.
3. fatigue property test sample load according to claim 1 and 2 loads the survey instrument of centre distance, it is characterized in that: described polygonal pyramid (4) is equal to or higher than H7/g6 with the quality of fit of reference column (2).
4. fatigue property test sample load according to claim 1 and 2 loads the survey instrument of centre distance, it is characterized in that: the direct digital display screen that shows of measured value that capacitor grid transducer is housed on the described indication baffle plate (5) and described capacitor grid transducer can be transmitted.
5. fatigue property test sample load according to claim 3 loads the survey instrument of centre distance, it is characterized in that: the direct digital display screen that shows of measured value that capacitor grid transducer is housed on the described indication baffle plate (5) and described capacitor grid transducer can be transmitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220292137 CN202719938U (en) | 2012-06-21 | 2012-06-21 | Measuring tool for measuring load loading center distance of test specimen in fatigue performance tests |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220292137 CN202719938U (en) | 2012-06-21 | 2012-06-21 | Measuring tool for measuring load loading center distance of test specimen in fatigue performance tests |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202719938U true CN202719938U (en) | 2013-02-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220292137 Expired - Lifetime CN202719938U (en) | 2012-06-21 | 2012-06-21 | Measuring tool for measuring load loading center distance of test specimen in fatigue performance tests |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202719938U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043183A (en) * | 2015-05-11 | 2015-11-11 | 浙江胜华波电器股份有限公司 | Digital display vernier for measuring reduction box body center distance |
| CN112432880A (en) * | 2020-12-08 | 2021-03-02 | 盐城仁创砂业科技有限公司 | Tectorial membrane sand fluidity measuring device and method |
-
2012
- 2012-06-21 CN CN 201220292137 patent/CN202719938U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043183A (en) * | 2015-05-11 | 2015-11-11 | 浙江胜华波电器股份有限公司 | Digital display vernier for measuring reduction box body center distance |
| CN112432880A (en) * | 2020-12-08 | 2021-03-02 | 盐城仁创砂业科技有限公司 | Tectorial membrane sand fluidity measuring device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130206 |
|
| CX01 | Expiry of patent term |