CN202583019U - Small test sample fatigue test device - Google Patents
Small test sample fatigue test device Download PDFInfo
- Publication number
- CN202583019U CN202583019U CN 201220257247 CN201220257247U CN202583019U CN 202583019 U CN202583019 U CN 202583019U CN 201220257247 CN201220257247 CN 201220257247 CN 201220257247 U CN201220257247 U CN 201220257247U CN 202583019 U CN202583019 U CN 202583019U
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- solenoid valve
- test sample
- small
- sample
- auxiliary reclay
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model provides a small test sample fatigue test device which is a simple device capable of testing fatigue performance of a small test sample with a small size. The device is formed by a time relay circuit control system, a transformation rectifying system, a solenoid valve mechanical movement loading system, a test sample clamping system and an environment box. The small test sample fatigue test device is characterized in that a time relay enables a main circuit switch to be periodically disconnected and connected at intervals according to set time, a solenoid valve pressing head reciprocates under the effect of periodical magnetic force to directly act on a metal or non-metal small sample, and the loading period of the device can be accurate to milliseconds. The test sample clamping system is formed by six movable iron plates to enable the test sample to be capable of moving in a three-dimensional space, free adjustment of loading displacement and stressed points is achieved, simultaneously the test sample is flexible and variable in shape, and a fatigue test can be directly performed on the formed test sample with the small size. Environment factors of temperature, humidity, contents and the like of atmosphere in the environment box of the small test sample fatigue test device can be adjusted to meet the requirements of different tests for the environment.
Description
Technical field
The utility model relates to a kind of small sample fatigue test device to the small sample fatigue property test.
Background technology
Along with the development of modern manufacturing industry, the parts of various large-scale instruments or the manufacturing of miniature workpiece are more and more exquisite, material therefor is more and more various, Service Environment is more and more harsher, and its fatigue failure problem is also more and more outstanding.At present; The alternating magnetic field that utilizes magnetizing coil to produce needs sample in magnetic field, to produce magnetic force to the fatigue test device that small sample carries out the power loading; Need adhere to magnetic material above that to non magnetic sample (as nonmetal), inconvenient operation like this, Service Environment is wayward.Be the fatigue failure behavior of simulation material under actual working conditions, generally need in controllable environment, directly load different materials, difform small sample.
Summary of the invention
In order to address the above problem; The purpose of the utility model is to provide a kind of and can under certain environment, directly loads difform metal or nonmetal centimetre-sized small sample, solves can not directly loading non magnetic sample of existing in the existing small sample fatigue test device, the uncontrollable small sample fatigue test device of experimental situation.
The technical scheme of the utility model is: the small sample fatigue test device comprises the time relay circuit control system, transformation commutation system, solenoid valve mechanical motion loading system, the sample that link to each other with the 220V civil power be installed system and environmental cabinet;
Said time relay circuit control system is made up of circulation time delay relay and auxiliary reclay;
Said transformation commutation system is made up of AC transformer and flat bridge rectifier;
Said solenoid valve mechanical motion loading system is made up of solenoid valve;
Said circulation time delay relay, auxiliary reclay, AC transformer, flat bridge rectifier, solenoid valve and poly (methyl methacrylate) plate are installed in the said environmental cabinet; Said circulation time delay relay is connected with auxiliary reclay; The switching frequency of the built-in normal open switch through said circulation time delay relay realizes that the periodicity of said auxiliary reclay built-in switch opens and closes; Said circulation time delay relay is connected on the said auxiliary reclay through said AC transformer, makes the output voltage of said auxiliary reclay reduce to the low-voltage AC of 24V; Said auxiliary reclay is connected with said solenoid valve through said flat bridge rectifier; Realize that said solenoid valve produces the electromagnetic field of identical temporal frequency under the low-voltage DC of certain frequency, the solenoid valve pressure head of periodic mechanical motion is exerted pressure and is carried out testing fatigue being fixed on be installed small sample in the system of said sample under the action of a magnetic field.
Further, the said sample system that is installed is made up of polylith iron plate, poly (methyl methacrylate) plate, nuts and bolt, and said poly (methyl methacrylate) plate is symmetrical set, and every said iron plate is installed on the said poly (methyl methacrylate) plate through nuts and bolt.
Further, said environment casing adopts transparent poly (methyl methacrylate) plate to process.
The beneficial effect of the utility model is: owing to adopt technique scheme, the utility model has been realized difform metal or nonmetal centimetre-sized small size sample are directly carried out the tired loading of periodicity, and loading cycle can be accurate to millisecond (ms); The sample system that is installed allows small size sample in three dimensions, to move simultaneously, has realized the free adjustment of load deflection and stress point; Temperature, humidity, the one-tenth of the atmosphere environmental factor scalable of grading can satisfy different experiments to environment requirement in the environmental cabinet that is equipped with.This device low cost of manufacture, structural principle is simple, and is easy to use, safe and reliable, has very big generalization and universality.
Description of drawings
Fig. 1 is the utility model small sample fatigue loading device structural representation.
Fig. 2 is the transformation rectification principle schematic of the utility model.
Among the figure:
1. environmental cabinet, 2. circulation time delay relay, 3. AC transformer, 4. auxiliary reclay, 5. flat bridge rectifier, 6. solenoid valve, 7. bolt, 8. nut, 9. poly (methyl methacrylate) plate, 10. iron plate.
Embodiment
Be described further below in conjunction with the technical scheme of specific embodiment the utility model.
When needing test; Sample is installed on the iron plate 10 of symmetrically arranged poly (methyl methacrylate) plate 9 in the environmental cabinet 1, regulates bolt 7 and clamp sample, the 220V civil power is communicated with circulation time delay relay DH48S-S 2 with nut 8; The way circuit make and break period is set for circulation time delay relay DH48S-S 2 according to the experiment demand; Open master switch, when the internal circuit of circulation time delay relay DH48S-S 2 and auxiliary reclay HH52P 4 was all closed, entire circuit was in channel status; At this state, civil power arrives flat bridge rectifier 5 through circulation time delay relay DH48S-S 2, AC transformer 220V/24V 3 after regulating, and is integrated into pulse direct current and acts on solenoid valve JL31-TD2412 6; The solenoid valve JL31-TD2412 6 inner periodic electromagnetic field that produce; The to-and-fro movement under this action of a magnetic field of the iron core of solenoid valve JL31-TD2412 6, the pressure head of solenoid valve JL31-TD2412 6 produces the cyclic loading on the certain orientation, if small sample is installed on the correct position apart from the pressure head of solenoid valve JL31-TD2412 6; Just can reach the CYCLIC LOADING of less load; After reaching the time interval, circulation time delay relay DH48S-S 2 internal circuits break off, and entire circuit converts open-circuit condition into; The iron core of solenoid valve JL31-TD2412 6 resets, and accomplishes once tired the loading.Moving in circles of this process promptly realized the purpose to the small size sample testing fatigue; Need be when the adjusting sample position on the vertical loading direction; Regulate the iron plate 10 of bolt 7 ends and the distance of poly (methyl methacrylate) plate 9 through setting nut 8 and bolt 7; Thereby sample is fixed on the optional position of vertical poly (methyl methacrylate) plate 10 directions, has promptly accomplished the adjusting of sample on the vertical loading direction.
As shown in Figure 2; The civil power that is 220V is through circulation time delay relay and the auxiliary reclay break-make by the periodic adjustment alternating current that is provided with; The alternating current of 220V is reduced to 24V through transformer voltage under channel status then, finally through the flat bridge rectifier alternating current of 24V is integrated into pulse direct current.
Claims (3)
1. the small sample fatigue test device is characterized in that, this device comprises the time relay circuit control system, transformation commutation system, solenoid valve mechanical motion loading system, the sample that link to each other with the 220V civil power be installed system and environmental cabinet (1);
Said time relay circuit control system is made up of circulation time delay relay (2) and auxiliary reclay (4);
Said transformation commutation system is made up of AC transformer (3) and flat bridge rectifier (5);
Said solenoid valve mechanical motion loading system is made up of solenoid valve (6);
Said circulation time delay relay (2), AC transformer (3), auxiliary reclay (4), flat bridge rectifier (5), solenoid valve (6) and poly (methyl methacrylate) plate (9) are installed in the said environmental cabinet (1); Said circulation time delay relay (2) is connected with auxiliary reclay (4); The switching frequency of the built-in normal open switch through said circulation time delay relay (2) realizes that the periodicity of the built-in switch of said auxiliary reclay (4) opens and closes; Said circulation time delay relay (2) is connected on the said auxiliary reclay (4) through said AC transformer (3), makes the output voltage of said auxiliary reclay (4) reduce to the low-voltage AC of 24V; Said auxiliary reclay (4) is connected with said solenoid valve (6) through said flat bridge rectifier (5); Realize that said solenoid valve (6) produces the electromagnetic field of identical temporal frequency under the low-voltage DC of certain frequency, the solenoid valve of periodic mechanical motion (6) pressure head is exerted pressure and is carried out testing fatigue being fixed on be installed small sample in the system of said sample under the action of a magnetic field.
2. small sample fatigue test device according to claim 1; It is characterized in that; The said sample system that is installed is made up of polylith iron plate (10), poly (methyl methacrylate) plate (9), nut (8) and bolt (7); Said poly (methyl methacrylate) plate is symmetricly set in the said environmental cabinet (1), and every said iron plate (10) is installed on the said poly (methyl methacrylate) plate (10) through nut (8) and bolt (7).
3. small sample fatigue test device according to claim 1 is characterized in that, said environmental cabinet (1) adopts transparent poly (methyl methacrylate) plate to process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220257247 CN202583019U (en) | 2012-06-01 | 2012-06-01 | Small test sample fatigue test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220257247 CN202583019U (en) | 2012-06-01 | 2012-06-01 | Small test sample fatigue test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202583019U true CN202583019U (en) | 2012-12-05 |
Family
ID=47252420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220257247 Expired - Fee Related CN202583019U (en) | 2012-06-01 | 2012-06-01 | Small test sample fatigue test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202583019U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104198283A (en) * | 2014-09-02 | 2014-12-10 | 建研科技股份有限公司 | Pulling-out instrument control method for automatically detecting concrete strength |
| CN106525464A (en) * | 2016-12-30 | 2017-03-22 | 宁波建新底盘系统有限公司 | Automobile torsion beam back bridge fatigue test device |
-
2012
- 2012-06-01 CN CN 201220257247 patent/CN202583019U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104198283A (en) * | 2014-09-02 | 2014-12-10 | 建研科技股份有限公司 | Pulling-out instrument control method for automatically detecting concrete strength |
| CN106525464A (en) * | 2016-12-30 | 2017-03-22 | 宁波建新底盘系统有限公司 | Automobile torsion beam back bridge fatigue test device |
| CN106525464B (en) * | 2016-12-30 | 2019-12-10 | 宁波建新底盘系统有限公司 | Automobile torsion beam type rear axle fatigue test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20130601 |