CN204008282U - A kind of controlled unidirectional prestress charger - Google Patents
A kind of controlled unidirectional prestress charger Download PDFInfo
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- CN204008282U CN204008282U CN201420408695.2U CN201420408695U CN204008282U CN 204008282 U CN204008282 U CN 204008282U CN 201420408695 U CN201420408695 U CN 201420408695U CN 204008282 U CN204008282 U CN 204008282U
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- top board
- nut
- lower platen
- pad
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Abstract
The utility model relates to a kind of charger of controlled unidirectional prestress.Mainly solved the problem that in-service material stress state can not quantize standard.Comprise top board, lower platen, test block, hold-down bolt, setting nut, back up pad and statical strain indicator, test block is located between top board and lower platen, between test block and lower platen, be provided with strain pressure transducer, strain pressure transducer is electrically connected to statical strain indicator, between back up pad and top board, be provided with elevating mechanism, elevating mechanism comprises rotating disk, nut and application of force screw rod, rotating disk is rotatable to be located in back up pad, nut is connected with rotating disk, application of force screw rod coordinates with nut thread, and end face and the top board of application of force screw rod are in contact with one another, nut rotarily drives application of force screw axial movable top and presses pressing plate.This charger calculates application of force value by the calibration value of strain pressure transducer and the strain value of statical strain indicator, and then by obtain the uniaxial stress value of sample divided by Area of Sample, material is applied to controlled different stress, and then the tendency that can study material physicochemical property under different stress changes, thereby reach the object that the in-service material key structure part of prevention lost efficacy.
Description
Technical field
The utility model relates to and belongs to mechanical material checkout equipment field, refers in particular to a kind of charger of controlled unidirectional prestress.
Background technology
The charger of controlled unidirectional prestress is material stress research equipment.A lot of in-service materials and equipment all need to study its stress state, reach the object of the front early warning of its structural member inefficacy.But during the physicochemical property under its stress state of research, adopt active service material to have stress state not quantize and nonstandard problem.Unidirectional prestress charger can apply controlled different stress to same material, can, in the variation of research material physicochemical property under different stress, reach the object that the in-service material key structure part of prevention lost efficacy.
Summary of the invention
In order to overcome shortcoming and the weak point of background technology, the utility model provides a kind of charger of controlled unidirectional prestress, has mainly solved the problem that in-service material stress state can not quantize standard, can apply controlled different stress to same material.
The technical solution of the utility model is: a kind of charger of controlled unidirectional prestress, comprise top board, lower platen, test block, hold-down bolt, setting nut, back up pad and statical strain indicator, described test block is located between top board and lower platen, described hold-down bolt is successively through lower platen, top board is also connected by setting nut, between the end of described test block and lower platen, be provided with strain pressure transducer, described strain pressure transducer is electrically connected to statical strain indicator, described lower platen is fixedly connected with back up pad, between described back up pad and top board, be provided with elevating mechanism, described elevating mechanism comprises rotating disk, nut and application of force screw rod, described rotating disk is rotatable to be located in back up pad, described nut is connected with rotating disk, described application of force screw rod coordinates with nut thread, and the end face of described application of force screw rod and described top board are in contact with one another, described nut rotarily drives application of force screw axial movable top and presses pressing plate.
Described hold-down bolt is four, is uniformly distributed in the periphery of top board, lower platen, and the two ends of described test block lay respectively at the center of top board and lower platen.
Also comprise carrying bolt, holding nut, described carrying bolt is successively through lower platen, back up pad and by being connected with holding nut.
Described carrying bolt is four, is periphery and is uniformly distributed.
the utlity model has following beneficial effect:because this charger calculates application of force value by the calibration value of strain pressure transducer and the strain value of statical strain indicator, and then by obtain the uniaxial stress value of sample divided by Area of Sample, material is applied to controlled different stress, and then the tendency that can study material physicochemical property under different stress changes, thereby reach the object that the in-service material key structure part of prevention lost efficacy.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is perspective view of the present utility model.
Fig. 3 is the structural representation of the elevating mechanism in the utility model.
In figure, top board 1, lower platen 2, test block 3, hold-down bolt 4, setting nut 5, back up pad 6, statical strain indicator 7, strain pressure transducer 8, rotating disk 9, rotating nut 10, screw rod 11, carrying bolt 12, holding nut 13.
Embodiment
For accompanying drawing, embodiment of the present utility model is described further below:
As shown in the figure, a kind of charger of controlled unidirectional prestress, comprise top board 1, lower platen 2, test block 3, hold-down bolt 4, setting nut 5, back up pad 6 and statical strain indicator 7, described test block 3 is located between top board 1 and lower platen 2, described hold-down bolt 4 is successively through lower platen 2, top board 1 is also connected by setting nut 5, between the end of described test block 3 and lower platen 2, be provided with strain pressure transducer 8, described strain pressure transducer 8 is electrically connected to statical strain indicator 7, described lower platen 2 is fixedly connected with back up pad 6, between described back up pad 6 and top board 1, be provided with elevating mechanism, described elevating mechanism comprises rotating disk 9, rotating nut 10 and application of force screw rod 11, described rotating disk 9 is rotatable to be located in back up pad 6, described rotating nut 10 is connected with rotating disk 9, described application of force screw rod 11 and rotating nut 10 threaded engagement, and the end face of described application of force screw rod 11 and described top board 1 are in contact with one another, described nut rotation 10 drives application of force screw rod 11 to move axially top and presses pressing plate 1, make described top board extruding test block.During use, the lifting that mechanical load part is controlled rotating disk by application of force bolt reaches the object to the sample application of force in upper lower platen, screws out the application of force screw rod of rotating disk, to the slow stress application of the test specimen between upper and lower pressing plate.Data display unit is connected with statical strain indicator by strain pressure transducer, strain pressure transducer is placed between pressing plate and test specimen, by statical strain indicator, draw dependent variable, draw the size of loading force with the calibration value of strain pressure transducer, by the calibration value of strain pressure transducer and the strain value of statical strain indicator, calculate application of force value, and then by obtain the uniaxial stress value of sample divided by Area of Sample.According to such scheme, by material being applied to controlled different stress, and then the tendency that can study material physicochemical property under different stress changes, thereby reaches the object that the in-service material key structure part of prevention lost efficacy.
In the present embodiment, as shown in Figure 1 and Figure 2, the full-bridge connected mode strain pressure transducer of take is example, A, the B, C, the D end that connect successively in order statical strain indicator, under the inner external voltage effect of statical strain indicator, obtain the magnitude of voltage of B, D end, and then obtain the strain value of strain gauge pressure sensor, according to the calibration value of strain gauge pressure sensor, draw the size of loading force, then can obtain unidirectional loading stress state divided by the cross-sectional area of test specimen.
In the present embodiment, described hold-down bolt 4 is four, is uniformly distributed in the periphery of top board 1, lower platen 2, and the two ends of described test block 3 lay respectively at the center of top board 1 and lower platen 2.Top board is connected with four hold-down bolts with lower platen, as the stressing device of sample, by regulating four setting nuts, guarantees the stressed homogeneity of sample, thereby improves accuracy and stability.
In the present embodiment, also comprise carrying bolt 12, holding nut 13, described carrying bolt 12 is successively through lower platen 2, back up pad 6 and by being connected with holding nut 13.
In the present embodiment, described carrying bolt 12 is four, is periphery and is uniformly distributed.By four carrying bolts, guarantee the stability that lower platen is connected with back up pad.
Embodiment should not be considered as the restriction to utility model, but any improvement of doing based on spirit of the present utility model, all should be within protection domain of the present utility model.
Claims (4)
1. the charger of a controlled unidirectional prestress, it is characterized in that: comprise top board (1), lower platen (2), test block (3), hold-down bolt (4), setting nut (5), back up pad (6) and statical strain indicator (7), described test block (3) is located between top board (1) and lower platen (2), described hold-down bolt (4) is successively through lower platen (2), top board (1) is also connected by setting nut (5), between the end of described test block (3) and lower platen (2), be provided with strain pressure transducer (8), described strain pressure transducer (8) is electrically connected to statical strain indicator (7), described lower platen (2) is fixedly connected with back up pad (6), between described back up pad (6) and top board (1), be provided with elevating mechanism, described elevating mechanism comprises rotating disk (9), rotating nut (10) and application of force screw rod (11), described rotating disk (9) is rotatable to be located in back up pad (6), described rotating nut (10) is connected with rotating disk (9), described application of force screw rod (11) and rotating nut (10) threaded engagement, and the end face of described application of force screw rod (11) and described top board (1) are in contact with one another, described nut rotation (10) drives application of force screw rod (11) to move axially top and presses pressing plate (1), make described top board extruding test block.
2. the charger of controlled unidirectional prestress according to claim 1, it is characterized in that: described hold-down bolt (4) is four, the periphery that is uniformly distributed in top board (1), lower platen (2), the two ends of described test block (3) lay respectively at the center of top board (1) and lower platen (2).
3. the charger of controlled unidirectional prestress according to claim 1 and 2, it is characterized in that: also comprise carrying bolt (12), holding nut (13), described carrying bolt (12) is successively through lower platen (2), back up pad (6) and by being connected with holding nut (13).
4. the charger of controlled unidirectional prestress according to claim 3, is characterized in that: described carrying bolt (12) is four, is periphery and is uniformly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420408695.2U CN204008282U (en) | 2014-07-24 | 2014-07-24 | A kind of controlled unidirectional prestress charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420408695.2U CN204008282U (en) | 2014-07-24 | 2014-07-24 | A kind of controlled unidirectional prestress charger |
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| Publication Number | Publication Date |
|---|---|
| CN204008282U true CN204008282U (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420408695.2U Expired - Fee Related CN204008282U (en) | 2014-07-24 | 2014-07-24 | A kind of controlled unidirectional prestress charger |
Country Status (1)
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| CN (1) | CN204008282U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259061A (en) * | 2015-11-13 | 2016-01-20 | 广西玉柴机器股份有限公司 | Cam shaft Rockwell hardness detecting assembly |
| CN109866137A (en) * | 2019-04-03 | 2019-06-11 | 西安飞机工业（集团）有限责任公司 | A kind of aircraft rib prestressing force loading device and loading method |
| CN110609317A (en) * | 2019-09-18 | 2019-12-24 | 东北大学 | Seismic detector auxiliary fixing device suitable for open-air iron ore stope |
| CN111458243A (en) * | 2020-03-26 | 2020-07-28 | 舟山市质量技术监督检测研究院 | Experimental method for measuring metal mechanical property by using indentation instrument |
| CN113092247A (en) * | 2021-03-03 | 2021-07-09 | 南京理工大学 | Ceramic prestress loading device and mounting method thereof |
-
2014
- 2014-07-24 CN CN201420408695.2U patent/CN204008282U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259061A (en) * | 2015-11-13 | 2016-01-20 | 广西玉柴机器股份有限公司 | Cam shaft Rockwell hardness detecting assembly |
| CN109866137A (en) * | 2019-04-03 | 2019-06-11 | 西安飞机工业（集团）有限责任公司 | A kind of aircraft rib prestressing force loading device and loading method |
| CN110609317A (en) * | 2019-09-18 | 2019-12-24 | 东北大学 | Seismic detector auxiliary fixing device suitable for open-air iron ore stope |
| CN111458243A (en) * | 2020-03-26 | 2020-07-28 | 舟山市质量技术监督检测研究院 | Experimental method for measuring metal mechanical property by using indentation instrument |
| CN111458243B (en) * | 2020-03-26 | 2022-11-15 | 舟山市质量技术监督检测研究院 | Experimental method for measuring mechanical properties of metal by using indentation instrument |
| CN113092247A (en) * | 2021-03-03 | 2021-07-09 | 南京理工大学 | Ceramic prestress loading device and mounting method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20150724 |
|
| EXPY | Termination of patent right or utility model |