CN105067254A - Fatigue testing apparatus for member - Google Patents
Fatigue testing apparatus for member Download PDFInfo
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- CN105067254A CN105067254A CN201510530838.6A CN201510530838A CN105067254A CN 105067254 A CN105067254 A CN 105067254A CN 201510530838 A CN201510530838 A CN 201510530838A CN 105067254 A CN105067254 A CN 105067254A
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Abstract
The invention relates to a fatigue testing apparatus for a member. The member is a steel-quality member. The testing apparatus comprises a fatigue test assembly, a refrigeration assembly, and a controlling element. The fatigue test assembly contains a pedestal, a fixed rack arranged on the pedestal, and a clamp for fixing the steel-quality member; and the clamp is made of metal. The refrigeration assembly includes a low-temperature box for placing the steel-quality member and a liquid nitrogen container connected with a programmable controller; and a heating couple is arranged in the liquid nitrogen container. According to the testing apparatus, the steel structure can be tested on the low-temperature condition; the production cost is low; and the operation is simple.
Description
Technical field
This invention and a kind of proving installation, specifically relate to a kind of fatigue test device for component.
Background technology
The engineering structures such as bridge, factory building, railway station building stand load for a long time, and therefore the fatigure failure of fragility may occur its steel beam column, therefore, carries out experiment on fatigue properties research very necessary to these components; Meanwhile, certain structures is also in cold district, and low temperature makes the brittle fracture tendency of steel and weld seam thereof strengthen, and possibility and the harmfulness of its generation fatigure failure are larger.So need equally to provide a kind of fatigue test device for component, with tested steel structure anti-fatigue ability under cryogenic.
Existing test unit, due to structural limitations, makes it can not carry out comprehensive loading fatigue test to steel construction under cryogenic, and only have assembling jig and test specimen to be in low temperature environment, and protection test loading equipemtn is not in low temperature stress.Due to existing test unit can only with draw, to press or tension and compression loading equipemtn is connected, torture test cannot be carried out to three-point bending, four-point bending, plate type tensile specimen, pole shape tensile sample, structure detail, comprehensively cannot understand the architectural characteristic of steel beam column.
For this reason, need to provide a kind of fatigue test device for component, with comprehensive tested steel structure architectural characteristic under cryogenic, improve automaticity and simplify the operation.
Summary of the invention
Solve the deficiencies in the prior art, the invention provides following technical proposals to realize: provide a kind of fatigue test device for component, described component is steel components, and described test unit comprises torture test assembly, cooling assembly and control element;
Described torture test assembly comprises base, be arranged on the fixture of fixed mount on described base and fixing described steel components, and described fixture is metal material;
Described cooling assembly comprises the cryogenic box placing described steel components and the liquid nitrogen container be connected with Programmable Logic Controller; Be provided with in described liquid nitrogen container and add thermopair.
Described fixed mount by with the vertically disposed wall of described base and the enclosed frame that forms with the top cover that described base be arranged in parallel;
Described base and top cover are respectively equipped with through hole; Be provided with hydraulic cylinder in described through hole, described hydraulic cylinder one end is connected with hydraulic pump, and the other end is connected with described fixture.
Described top cover is the composite plate that lower surface is provided with thermal insulation board; Described base and top cover are respectively equipped with the hydraulic cylinder fixed head be oppositely arranged.
Described fixture is that one end is provided with incised groove, and the other end is provided with externally threaded strip clamp;
Described external thread is connected with the internal thread be arranged on described hydraulic cylinder inner push-rod.
Be provided with steel column in described fixed mount, described steel column is provided with cryogenic box;
Described cryogenic box is the rectangle cavity that the center be made up of two grooves be oppositely arranged is provided with through hole, and two ends, described groove combination face are respectively equipped with hinge and clip, and described through hole is connected with described fixture.
Described cryogenic box surface is provided with orthogonal thermometer hole and air admission hole;
Described air admission hole is connected by nitrogen feeding pipe road with liquid nitrogen container, and described thermometer hole place is provided with temperature sensor.
The temperature signal of described Programmable Logic Controller reception temperature sensor controls the liquid nitrogen flow of described liquid nitrogen container.
Described control element comprises and controls mainboard and be arranged on button on described control mainboard and LED display module, described button be positioned at the processor input end controlled on mainboard and be connected, processor output terminal is connected with LED display module; Described processor input end is connected with stroke sensor with the speed be arranged on described fixture, and described processor output terminal is connected with described hydraulic cylinder.
Ebullator is provided with in described liquid nitrogen container.
The described push rod be arranged in described hydraulic cylinder can coordinate with other fixture.
With immediate prior art ratio, technical scheme provided by the invention has following beneficial effect:
1, the test unit that the application provides is provided with cooling assembly, can test steel construction under cryogenic.
2, the test unit that the application provides is provided with the fixture being connected with hydraulic cylinder, can complete the torture test of three-point bending, four-point bending, plate type tensile specimen, pole shape tensile sample, structure detail.
3, the test unit that the application provides uses the method refrigeration of liquid nitrogen container conveying liquid nitrogen, has the advantage that production cost is low and simple to operate.
4, the control element that the application provides can automatically control fixture and complete torture test, saves cost of labor, reduces error probability.
5, the cooling assembly that the application provides can control the flow of liquid nitrogen container conveying liquid nitrogen automatically, has the advantage that automaticity is high and work efficiency is high.
Accompanying drawing explanation
Fig. 1 is the connection diagram of the fatigue experimental device for component provided by the invention;
Fig. 2 is the vertical view of cryogenic box opening provided by the invention;
Fig. 3 is the vertical view of cryogenic box closed condition provided by the invention;
Fig. 4 is fixture front view provided by the invention;
Wherein, 1-torture test assembly, 2-cooling assembly, 3-control element, 4-fixed mount, 5-fixture, 6-cryogenic box, 7-liquid nitrogen container, 8-hydraulic cylinder, 9-thermal insulation board, 10-hydraulic cylinder fixed head, 11-steel column, 12-thermometer hole, 13-air admission hole;
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1:
As shown in Figure 1, a kind of fatigue test device for component, described component is steel components, and described test unit comprises torture test assembly 1, cooling assembly 2 and control element 3;
Described torture test assembly 1 comprises base, be arranged on the fixture 5 of fixed mount 4 on described base and fixing described steel components, and described fixture 5 is metal material;
Described cooling assembly 2 comprises the cryogenic box 6 placing described steel components and the liquid nitrogen container 7 be connected with Programmable Logic Controller; Be provided with in described liquid nitrogen container 7 and add thermopair.
Described fixed mount 4 by with the vertically disposed wall of described base and the enclosed frame that forms with the top cover that described base be arranged in parallel;
Described base and top cover are respectively equipped with through hole; Be provided with hydraulic cylinder 8 in described through hole, described hydraulic cylinder 8 one end is connected with hydraulic pump, and the other end is connected with described fixture.
Described top cover is the composite plate that lower surface is provided with thermal insulation board 9; Described base and top cover are respectively equipped with the hydraulic cylinder fixed head 10 be oppositely arranged.
As shown in Figure 4, described fixture 5 is provided with incised groove for one end, and the other end is provided with externally threaded strip clamp;
Described external thread is connected with the internal thread be arranged on described hydraulic cylinder 8 inner push-rod.
Be provided with steel column 11 in described fixed mount 4, described steel column 11 is provided with cryogenic box 6;
As shown in Figures 2 and 3, described cryogenic box 6 is the rectangle cavity that the center be made up of two grooves be oppositely arranged is provided with through hole, and two ends, described groove combination face are respectively equipped with hinge and clip, and described through hole is connected with described fixture 5.
As shown in Figure 3, described cryogenic box 6 surface is provided with orthogonal thermometer hole 12 and air admission hole 13;
Described air admission hole 13 is connected by nitrogen feeding pipe road with liquid nitrogen container 7, and described thermometer hole 12 place is provided with temperature sensor.
The temperature signal of described Programmable Logic Controller reception temperature sensor controls the liquid nitrogen flow of described liquid nitrogen container 7.
As shown in Figure 1, described control element 3 comprises and controls mainboard and be arranged on button on described control mainboard and LED display module, described button be positioned at the processor input end controlled on mainboard and be connected, processor output terminal is connected with LED display module; Described processor input end is connected with stroke sensor with the speed be arranged on described fixture 5, and described processor output terminal is connected with described hydraulic cylinder 8.
Ebullator is provided with in described liquid nitrogen container 7.
The described push rod be arranged in described hydraulic cylinder 8 can coordinate with other fixture.
Above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; although with reference to above-described embodiment to invention has been detailed description; those of ordinary skill in the field still can modify to the specific embodiment of the present invention or equivalent replacement; and these do not depart from any amendment of spirit and scope of the invention or equivalent replacement, its claim of the present invention all awaited the reply in application is protected within model.
Claims (10)
1. for a fatigue test device for component, described component is steel components, and described proving installation comprises torture test assembly (1), cooling assembly (2) and control element (3); It is characterized in that,
Described torture test assembly (1) comprises base, be arranged on the fixture (5) of fixed mount (4) on described base and fixing described steel components, and described fixture (5) is metal material;
Described cooling assembly (2) comprises the cryogenic box (6) placing described steel components and the liquid nitrogen container (7) be connected with Programmable Logic Controller; Be provided with in described liquid nitrogen container (7) and add thermopair.
2. proving installation as claimed in claim 1, is characterized in that, described fixed mount (4) by with the vertically disposed wall of described base and the enclosed frame that forms with the top cover that described base be arranged in parallel;
Described base and top cover are respectively equipped with through hole; Be provided with hydraulic cylinder (8) in described through hole, described hydraulic cylinder (8) one end is connected with hydraulic pump, and the other end is connected with described fixture.
3. proving installation as claimed in claim 2, it is characterized in that, described top cover is the composite plate that lower surface is provided with thermal insulation board (9); Described base and top cover are respectively equipped with the hydraulic cylinder fixed head (10) be oppositely arranged.
4. proving installation as claimed in claim 2, is characterized in that, described fixture (5) is provided with incised groove for one end, and the other end is provided with externally threaded strip clamp;
Described external thread is connected with the internal thread be arranged on described hydraulic cylinder (8) inner push-rod.
5. proving installation as claimed in claim 1, it is characterized in that, be provided with steel column (11) in described fixed mount (4), described steel column (11) is provided with cryogenic box (6);
Described cryogenic box (6) is the rectangle cavity that the center be made up of two grooves be oppositely arranged is provided with through hole, and two ends, described groove combination face are respectively equipped with hinge and clip, and described through hole is connected with described fixture (5).
6. proving installation as claimed in claim 5, it is characterized in that, described cryogenic box (6) surface is provided with orthogonal thermometer hole (12) and air admission hole (13);
Described air admission hole (13) is connected by nitrogen feeding pipe road with liquid nitrogen container (7), and described thermometer hole (12) place is provided with temperature sensor.
7. proving installation as claimed in claim 6, is characterized in that, the temperature signal of described Programmable Logic Controller reception temperature sensor controls the liquid nitrogen flow of described liquid nitrogen container (7).
8. proving installation as claimed in claim 2, it is characterized in that, described control element (3) comprises control mainboard and the button be arranged on described control mainboard and LED display module, described button be positioned at the processor input end controlled on mainboard and be connected, processor output terminal is connected with LED display module; Described processor input end is connected with stroke sensor with the speed be arranged on described fixture (5), and described processor output terminal is connected with described hydraulic cylinder (8).
9. proving installation as claimed in claim 7, it is characterized in that, described liquid nitrogen container is provided with ebullator in (7).
10. proving installation as claimed in claim 4, it is characterized in that, the described push rod be arranged in described hydraulic cylinder (8) can coordinate with other fixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510530838.6A CN105067254A (en) | 2015-08-26 | 2015-08-26 | Fatigue testing apparatus for member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510530838.6A CN105067254A (en) | 2015-08-26 | 2015-08-26 | Fatigue testing apparatus for member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105067254A true CN105067254A (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510530838.6A Pending CN105067254A (en) | 2015-08-26 | 2015-08-26 | Fatigue testing apparatus for member |
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| CN (1) | CN105067254A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680083A (en) * | 2016-12-26 | 2017-05-17 | 中国电力科学研究院 | Testing device for treading fatigue of tension composite insulator |
| CN108613878A (en) * | 2018-01-26 | 2018-10-02 | 北京强度环境研究所 | A kind of ultralow temperature mechanical test system based on DIC measuring technologies |
| CN110779816A (en) * | 2019-11-12 | 2020-02-11 | 磐翼信息科技(上海)有限公司 | Detection device for detecting flexible pipeline |
Citations (4)
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| CN203132933U (en) * | 2012-12-20 | 2013-08-14 | 核工业西南物理研究院 | Large low-temperature fatigue experimental device for bolt |
| CN103439201A (en) * | 2013-08-19 | 2013-12-11 | 北京航空航天大学 | System for testing fatigue in high/low temperature environment |
| CN103454165A (en) * | 2013-08-19 | 2013-12-18 | 北京航空航天大学 | Testing system for fatigue crack propagation test under high/low temperature environment |
| CN103852390A (en) * | 2012-12-07 | 2014-06-11 | 核工业西南物理研究院 | Ultralow-temperature system for low-temperature fatigue test of large-size fastening piece |
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2015
- 2015-08-26 CN CN201510530838.6A patent/CN105067254A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103852390A (en) * | 2012-12-07 | 2014-06-11 | 核工业西南物理研究院 | Ultralow-temperature system for low-temperature fatigue test of large-size fastening piece |
| CN203132933U (en) * | 2012-12-20 | 2013-08-14 | 核工业西南物理研究院 | Large low-temperature fatigue experimental device for bolt |
| CN103439201A (en) * | 2013-08-19 | 2013-12-11 | 北京航空航天大学 | System for testing fatigue in high/low temperature environment |
| CN103454165A (en) * | 2013-08-19 | 2013-12-18 | 北京航空航天大学 | Testing system for fatigue crack propagation test under high/low temperature environment |
Non-Patent Citations (1)
| Title |
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| 王元清 等: "北方某高铁客运站钢筋直螺纹套筒连接低温疲劳试验", 《沈阳建筑大学学报（自然科学版）》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680083A (en) * | 2016-12-26 | 2017-05-17 | 中国电力科学研究院 | Testing device for treading fatigue of tension composite insulator |
| CN108613878A (en) * | 2018-01-26 | 2018-10-02 | 北京强度环境研究所 | A kind of ultralow temperature mechanical test system based on DIC measuring technologies |
| CN110779816A (en) * | 2019-11-12 | 2020-02-11 | 磐翼信息科技(上海)有限公司 | Detection device for detecting flexible pipeline |
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Application publication date: 20151118 |
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