CN217277565U - Welded structure fatigue life test device - Google Patents
Welded structure fatigue life test device Download PDFInfo
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- CN217277565U CN217277565U CN202123265395.2U CN202123265395U CN217277565U CN 217277565 U CN217277565 U CN 217277565U CN 202123265395 U CN202123265395 U CN 202123265395U CN 217277565 U CN217277565 U CN 217277565U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
Welded structure fatigue life test device, including vibration test platform and the test sample of dress on the vibration test platform, its characterized in that: the test sample is provided with a welding structure which needs to detect the fatigue life, and the vibration test bed is provided with a plurality of test positions for installing the test sample. The utility model discloses can exert to test sample and draw to press to move to carry or crooked move to carry to detect welded structure draw and press load fatigue life or crooked load fatigue life, a plurality of test samples of installing in step of many test positions have on the vibration test bench, realize the synchronous detection of a plurality of test samples, test device's commonality is high, and the process of the test is close required detection fatigue life's welded structure's actual application operating mode more, improves the reliability and the validity of experimental detection.
Description
Technical Field
The utility model provides a welded structure fatigue life test device belongs to welded structure and detects technical field.
Background
At present, two main types of methods for predicting the fatigue life of a welding joint are provided, one is a method based on an S-N curve and a fatigue accumulated damage theory, and the other is a method based on a fracture mechanics theory and a crack propagation rate curve. In practical engineering application and common fatigue life finite element simulation analysis tools, joint S-N curves and a fatigue accumulated damage method are mostly adopted to predict the service life of a welded structure. Therefore, the acquisition of the S-N curve of the welding joint is very important for the service life prediction of the welding structure of the engineering machinery. Because the existing welding structure fatigue life calculation specification is not perfect, a large amount of test data is needed for the fatigue life research of the welding joint of an actual product, and a large amount of tests are needed for obtaining the S-N curve. While the current major international welding standards only provide the S-N curves for some typical weld joints, while having some versatility, they are not necessarily applicable to the actual joint for a particular product. Therefore, the scheme provides a fatigue life test method and a test sample for the welded structure joint aiming at a large amount of test requirements in a welding fatigue test and S-N curve boundary problems.
The prior art has the following defects:
1. different load working conditions such as tensile load, bending load and the like need different special test testing equipment, and two loading working conditions cannot be simultaneously completed on the same equipment;
2. the types of the testable joints are less;
3. the technical requirements for the test equipment clamp are high;
4. the large-batch test cannot be simultaneously carried out, and the precision of the clamp and the instrument equipment needs to be checked again each time the sample is replaced;
5. bending moment meeting the actual operation condition of the product cannot be applied to the welding joint, and the test load is mainly tensile load and compressive load.
SUMMERY OF THE UTILITY MODEL
The utility model provides a welded structure fatigue life test device, can exert to test sample and draw to press to move to carry or crooked move to carry, with the pull-press load fatigue life or the crooked load fatigue life that detect welded structure, it can install a plurality of test samples in step to have many test positions on the vibration test bench, realize the synchronous detection of a plurality of test samples, testing device's commonality is high, therefore, the clothes hanger is strong in practicability, the test process is close required detection fatigue life's welded structure's practical application operating mode more, improve the reliability and the validity of experimental detection.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
welded structure fatigue life test device, including vibration test platform and the test sample of dress on the vibration test platform, its characterized in that: the test sample is provided with a welding structure which needs to detect the fatigue life, and the vibration test bed is provided with a plurality of test positions for installing the test sample.
Preferably, the test sample comprises a mass block, a support connection plate and a base, the upper end of the support connection plate is welded with the mass block, the lower end of the support connection plate is welded with the base, the base is positioned on the test position, and the welding structure needing to detect the fatigue life is a welding structure between the upper end of the support connection plate and the mass block, a welding structure between the lower end of the support connection plate and the base or a welding structure in the support connection plate.
Preferably, the vibration test bed comprises a test platform, a horizontal vibration power part for driving the test platform to vibrate horizontally and a vertical vibration power part for driving the test platform to vibrate vertically, the side surface of the test platform is movably connected with the horizontal vibration power part, and the bottom surface of the test platform is movably connected with the vertical vibration power part.
Preferably, a plurality of test positions are distributed on the test platform in an array mode.
Preferably, the test position comprises four threaded connection holes which are distributed in a square shape, and the base is provided with mounting holes corresponding to the threaded connection holes.
The utility model has the advantages that:
1. the utility model discloses a welded structure fatigue life test device, the welded structure who needs to detect fatigue life has among the test sample, test sample dress is on vibration test bench, drive test sample motion through vibration test bench, the welded structure who needs to detect fatigue life detects, can exert to test sample and draw pressure to move year or crooked and move year, with the drawing pressure load fatigue life or the crooked load fatigue life of detecting welded structure, but have a plurality of test samples of many test positions synchronous installation on the vibration test bench, realize the synchronous detection of a plurality of test samples, testing arrangement's commonality is high, therefore, the clothes hanger is strong in practicability.
2. The welding structure for detecting the fatigue life is a welding structure between the mass block and the supporting connecting plate, a welding structure between the supporting connecting plate and the base or a welding structure in the supporting connecting plate, the position of the welding structure on the test sample is selected according to the position of the welding structure for detecting the fatigue life in the actual application working condition, the quality of the mass block and the height of the supporting connecting plate are adjusted, the test process is closer to the actual application working condition of the welding structure for detecting the fatigue life, and the reliability and the effectiveness of test detection are improved.
Drawings
Fig. 1 is a schematic diagram of a fatigue life testing apparatus for a welded structure according to an embodiment.
FIG. 2 is a schematic diagram of an experimental experiment.
Fig. 3 is an enlarged schematic view of a point a in fig. 2.
FIG. 4 is another schematic diagram of the fatigue life testing apparatus for the welded structure.
FIG. 5 is a schematic diagram of the distribution of test sites on the test platform.
Detailed Description
The embodiments of the present invention will be described in detail with reference to fig. 1 to 5.
Welded structure fatigue life test device, including vibration test platform 1 and the test sample 2 of dress on vibration test platform 1, its characterized in that: the test sample 2 is provided with a welding structure 3 needing to detect the fatigue life, and the vibration test bed is provided with a plurality of test positions 4 used for mounting the test sample.
Above welding structure fatigue life test device, the welding structure 3 that needs to detect fatigue life has in the test sample 2, test sample 2 adorns on vibration test platform 1, drive test sample 2 through vibration test platform 1 and move, the welding structure 3 that needs to detect fatigue life detects, can exert to test sample and draw pressure dynamic load or crooked dynamic load, with the tension and compression load fatigue life or the crooked load fatigue life who detects welding structure 3, it can install a plurality of test samples 2 in step to have many test positions 4 on the vibration test platform 1, realize the synchronous detection of a plurality of test samples 2, testing device's commonality is high, therefore, the clothes hanger is strong in practicability.
The test sample 2 comprises a mass block 21, a support connecting plate 22 and a base 23, the upper end of the support connecting plate 22 is welded with the mass block 21, the lower end of the support connecting plate 22 is welded with the base 23, the base 23 is positioned on the test position 4, and the welding structure 3 needing to detect the fatigue life is a welding structure between the upper end of the support connecting plate 22 and the mass block 31, a welding structure between the lower end of the support connecting plate 22 and the base 23 or a welding structure in the support connecting plate 22. The welding structure in the supporting connection plate 22 refers to a welding structure for welding the supporting plate 22, for example, two sub-plates are welded to form the supporting connection plate 22, and the welding structure in the supporting connection plate 22 refers to a welding structure between the two sub-plates, as shown in fig. 2 to 3.
The vibration test bed 1 comprises a test platform 11, a horizontal vibration power part 12 for driving the test platform 11 to horizontally vibrate and a vertical vibration power part 13 for driving the test platform 11 to vertically vibrate, wherein the side surface of the test platform 11 is movably connected with the horizontal vibration power part 12, and the bottom surface of the test platform 11 is movably connected with the vertical vibration power part 13. The vertical vibration power part 13 drives the test platform 11 to vibrate vertically, a tension and compression load is applied to the welding structure 3, the tension and compression load fatigue life of the welding structure is detected, the horizontal vibration power part 12 drives the test platform 11 to vibrate horizontally, a bending load is applied to the welding structure 3, and the bending load fatigue life of the welding structure is detected. The test platform 11 is movably connected with the horizontal vibration power part 12 and the vertical vibration power part 13 respectively, so that the vertical vibration power part 13 is prevented from interfering during horizontal vibration, the horizontal vibration power part 12 interferes during vertical vibration, synchronous loading of horizontal vibration and vertical vibration can be realized, and vibration loads in different directions and amplitudes are applied to the test sample 2.
Wherein, a plurality of test positions 4 are distributed on the test platform 11 in an array manner. Realize the synchronous detection of a plurality of test samples 2, testing arrangement's commonality is high, and the practicality is strong.
The test position 4 is composed of four threaded connection holes 41 which are distributed in a square shape, and the base 23 is provided with mounting holes 231 corresponding to the threaded connection holes. The screw inspection penetrates through the mounting hole 231 and is locked in the threaded connecting hole 41, so that the test sample 2 can be positioned on the test platform, the test site 4 is convenient and simple to mount and dismount, and the position of the test site on the test platform 11 is easy to adjust.
The fatigue life test method of the welding structure adopts the fatigue life test device of the welding structure, and is characterized in that: and setting a welding structure required to detect the fatigue life in the test sample, and adjusting the quality and height of the test sample 2 and the vibration amplitude and direction of the vibration test bed according to the actual application working condition of the welding structure required to detect the fatigue life. The position of the welding structure on the test sample is selected according to the position of the welding structure needing to detect the fatigue life in the practical application working condition, and the quality and the height of the test sample 2 are adjusted, so that the test process is closer to the practical application working condition of the welding structure 3, and the reliability and the effectiveness of test detection are improved.
Here, the adjustment of the mass of the test sample 2 refers to the adjustment of the mass block 21, and the adjustment of the height of the test sample 2 refers to the adjustment of the height of the support connection plate 22. The mass of the mass block 21 and the height of the supporting connecting block 22 are adjusted to enable the test process to be closer to the practical application working condition of the welding structure 3, and the vibration amplitude and direction of the test bed are adjusted through the horizontal vibration power part 12 and the vertical vibration power part 13 to enable the vibration amplitude and direction to be the same as the load direction and amplitude in the practical application working condition.
The technical solutions of the embodiments of the present invention are completely described above with reference to the accompanying drawings, and it should be noted that the described embodiments are only some embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Claims (4)
1. Welded structure fatigue life test device, including vibration test platform and the test sample of dress on the vibration test platform, its characterized in that: the test sample is provided with a welding structure needing to detect the fatigue life, and the vibration test bed is provided with a plurality of test positions for mounting the test sample;
the test sample comprises a mass block, a support connecting plate and a base, the upper end of the support connecting plate is welded with the mass block, the lower end of the support connecting plate is welded with the base, the base is positioned on a test position, and a welding structure needing to detect the fatigue life is a welding structure between the upper end of the support connecting plate and the mass block, a welding structure between the lower end of the support connecting plate and the base or a welding structure in the support connecting plate.
2. The welded structure fatigue life test device according to claim 1, characterized in that: the vibration test bed comprises a test platform, a horizontal vibration power part and a vertical vibration power part, wherein the horizontal vibration power part drives the test platform to horizontally vibrate, the vertical vibration power part drives the test platform to vertically vibrate, the side surface of the test platform is movably connected with the horizontal vibration power part, and the bottom surface of the test platform is movably connected with the vertical vibration power part.
3. The welded structure fatigue life test device according to claim 2, characterized in that: and a plurality of test positions are distributed on the test platform in an array manner.
4. The welded structure fatigue life test device of claim 3, characterized in that: the testing position consists of four threaded connecting holes which are distributed in a square shape, and the base is provided with mounting holes corresponding to the threaded connecting holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123265395.2U CN217277565U (en) | 2021-12-23 | 2021-12-23 | Welded structure fatigue life test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123265395.2U CN217277565U (en) | 2021-12-23 | 2021-12-23 | Welded structure fatigue life test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217277565U true CN217277565U (en) | 2022-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123265395.2U Active CN217277565U (en) | 2021-12-23 | 2021-12-23 | Welded structure fatigue life test device |
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| Country | Link |
|---|---|
| CN (1) | CN217277565U (en) |
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2021
- 2021-12-23 CN CN202123265395.2U patent/CN217277565U/en active Active
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