CN103245556B - Plow-steel cylindrical element bending strength test device - Google Patents
Plow-steel cylindrical element bending strength test device Download PDFInfo
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- CN103245556B CN103245556B CN201310164787.0A CN201310164787A CN103245556B CN 103245556 B CN103245556 B CN 103245556B CN 201310164787 A CN201310164787 A CN 201310164787A CN 103245556 B CN103245556 B CN 103245556B
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Abstract
The present invention relates to plow-steel cylindrical element bending strength test device, be arranged on tested cylindrical element, be made up of supporting pressure head and support set, pressure head is arched door shape structure, being arranged on the top in the middle part of tested cylindrical element, is linear contact lay with tested cylindrical element; Support set is located at the two ends of tested cylindrical element, and the below of support set is provided with circle and rolls fulcrum.Compared with prior art, the present invention can meet a set of pressure head and carries out static(al) or torture test at the different tests such as static(al), fatigue machine.
Description
Technical field
The present invention relates to a kind of test unit testing static bending strength or fatigue strength, especially relate to a kind of plow-steel cylindrical element bending strength test device.
Background technology
In 4 or three-point bending barrel strength testing experiment, if jig Design, especially pressure head design is incorrect, improper destruction will be caused, FAQs is cylinder flattening, longitudinal cracking, non-maximal bending moment place cracking etc., therefore, need at present to provide a kind of test unit, above-mentioned existing technical matters can be solved well.
Summary of the invention
Object of the present invention is exactly provide a kind of to overcome defect that above-mentioned prior art exists can meet a set of pressure head to carry out static(al) or torture test plow-steel cylindrical element bending strength test device at the different tests such as static(al), fatigue machine.
Object of the present invention can be achieved through the following technical solutions:
Plow-steel cylindrical element bending strength test device, be arranged on tested cylindrical element, this test unit is made up of supporting pressure head and support set,
Described pressure head is arched door shape structure, is arranged on the top in the middle part of tested cylindrical element, is linear contact lay with tested cylindrical element;
Described support set is located at the two ends of tested cylindrical element, and the below of support set is provided with circle and rolls fulcrum.
Be linear contact lay with the curved surface of tested cylindrical element below described pressure head, ensure to load moment of flexure.
The two ends that described support set is located at tested cylindrical element ensure that moment of flexure is stablized.
Described support set by symmetrically arranged upper cover, trapping and connecting upper cover forms with the screw of trapping, described upper cover and the external diameter of the internal diameter of trapping and tested cylindrical element coincide, the both sides that described screw is arranged on cover and traps.
Compared with prior art, the present invention can meet a set of pressure head and carry out static(al) or torture test at the different tests such as static(al), fatigue machine, pressure head is positioned in the middle of two fulcrums, be made up of the pressure head of two arch door shapes, two pressure heads and cylinder are linear contact lay, side-looking is linear load, and being just considered as linear load and making a concerted effort, is the half (0.5P) of gross load power P respectively.The support reaction adopting circle to roll does not have horizontal force, meets vertical reaction R requirement.Stressed between two pressure heads and fulcrum meets four-point bending requirement, and maximal bending moment Mmax is positioned at centre.The tired fracture with static(al) of theoretical analysis is positioned at maximal bending moment place, if there is groove should break at maximal bending moment groove place, test proves that static(al) and fatigue are all broken at middle maximal bending moment groove place, echos with theoretical analysis.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention installs;
Fig. 2 is that the present invention loads moment curve;
Fig. 3 is the structural representation of pressure head;
Fig. 4 is the structural representation of support set.
In figure, 1 be pressure head, 2 be support set, 21 for upper cover, 22 for trapping, 23 be screw, 3 to roll, 4 for cylindrical element for circle.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
Plow-steel cylindrical element bending strength test device, is arranged on tested cylindrical element 4, and as shown in Figure 1, this test unit is made up of supporting pressure head 1 and support set 2 its structure.Pressure head 1 is arched door shape structure, as shown in Figure 3, is arranged on the top in the middle part of tested cylindrical element 4 during test, with tested cylindrical element 4 in linear contact lay, ensures to load moment of flexure.The two ends that support set 2 is located at tested cylindrical element 4 ensure that moment of flexure is stablized, and avoid the improper destruction at two ends, be provided with circle roll 3 as fulcrum in the below of support set 2.Adopt loading moment of flexure situation of the present invention as shown in Figure 2, pressure head 1 passes through linear contact lay with the curved surface of tested cylindrical element 4, and what guarantee was carried in transversal section is linear contact lay, is point load in front.And then ensure to load moment of flexure (Mmax).Support set 2 by symmetrically arranged upper cover 21, trap 22 and connect upper cover 21 with trap 22 screw 23 form, upper cover 21 and trap 22 internal diameter and tested cylindrical element 4 external diameter coincide, screw 23 be arranged on cover 21 and trap 22 both sides, also attachment spacers etc. is set.
In addition, used pressure head and support set can also be changed, 4 points (3 points) bending test of other shape beams can be carried out, roll as being replaced by circle, " work " font can be carried out, the bending test of rectangle, plate.Supporting pressure head web member can meet a set of pressure head and carry out static(al) or torture test at the different tests such as static(al), fatigue machine.
Claims (3)
1. plow-steel cylindrical element bending strength test device, is arranged on tested cylindrical element, it is characterized in that, this test unit is made up of supporting pressure head and support set,
Described pressure head is arched door shape structure, is arranged on the top in the middle part of tested cylindrical element, is linear contact lay with tested cylindrical element;
Described support set is located at the two ends of tested cylindrical element, and the below of support set is provided with circle and rolls fulcrum;
Be linear contact lay with the curved surface of tested cylindrical element below described pressure head, ensure to load moment of flexure;
Described pressure head is positioned in the middle of two fulcrums, be made up of the pressure head of two arched door shapes, two pressure heads and cylinder are linear contact lay, side-looking is linear load, and be just considered as linear load and making a concerted effort, each linear load is the half of gross load power P with joint efforts respectively, the support reaction adopting circle to roll does not have horizontal force, only have vertical reacting force, stressed between two pressure heads and fulcrum meets four-point bending requirement, maximal bending moment M
maxbe positioned at centre.
2. plow-steel cylindrical element bending strength test device according to claim 1, is characterized in that, the two ends that described support set is located at tested cylindrical element ensure that moment of flexure is stablized.
3. plow-steel cylindrical element bending strength test device according to claim 1 and 2, it is characterized in that, described support set by symmetrically arranged upper cover, trapping and connecting upper cover forms with the screw of trapping, described upper cover and the external diameter of the internal diameter of trapping and tested cylindrical element coincide, the both sides that described screw is arranged on cover and traps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310164787.0A CN103245556B (en) | 2013-05-07 | 2013-05-07 | Plow-steel cylindrical element bending strength test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310164787.0A CN103245556B (en) | 2013-05-07 | 2013-05-07 | Plow-steel cylindrical element bending strength test device |
Publications (2)
| Publication Number | Publication Date |
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| CN103245556A CN103245556A (en) | 2013-08-14 |
| CN103245556B true CN103245556B (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310164787.0A Expired - Fee Related CN103245556B (en) | 2013-05-07 | 2013-05-07 | Plow-steel cylindrical element bending strength test device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372047A (en) * | 2015-10-14 | 2016-03-02 | 芜湖汉峰科技有限公司 | Reservoir welding performance detection device |
| CN105806602B (en) * | 2016-03-16 | 2019-06-25 | 中国直升机设计研究所 | A kind of main blade fatigue experimental device of anti-deicing |
| CN109765106A (en) * | 2019-01-08 | 2019-05-17 | 上海航天精密机械研究所 | Three-dimensional loading system and method applied to cylindrical product |
| CN113702199A (en) * | 2021-08-23 | 2021-11-26 | 上海业领电子商务有限公司 | Special steel compressive strength detection device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5609198A (en) * | 1993-12-23 | 1997-03-11 | Georg Fischer Giessereianlagen Ag | Apparatus for measuring the properties of mold materials |
| CN201177588Y (en) * | 2008-03-21 | 2009-01-07 | 江苏武进液压启闭机有限公司 | Ceramic piston-rod anti-fatigue curve performance test machine |
| CN201195176Y (en) * | 2008-05-22 | 2009-02-18 | 中铁十一局集团第一工程有限公司 | Bending machines |
| CN201497676U (en) * | 2009-01-12 | 2010-06-02 | 攀钢集团研究院有限公司 | Bending fixture used for prefabricating fatigue crack |
| CN201681016U (en) * | 2009-12-14 | 2010-12-22 | 中国飞机强度研究所 | Four point bending flexible supporting device |
| CN102620987A (en) * | 2012-03-14 | 2012-08-01 | 安徽农业大学 | Clamp for crop stem bending test |
-
2013
- 2013-05-07 CN CN201310164787.0A patent/CN103245556B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5609198A (en) * | 1993-12-23 | 1997-03-11 | Georg Fischer Giessereianlagen Ag | Apparatus for measuring the properties of mold materials |
| CN201177588Y (en) * | 2008-03-21 | 2009-01-07 | 江苏武进液压启闭机有限公司 | Ceramic piston-rod anti-fatigue curve performance test machine |
| CN201195176Y (en) * | 2008-05-22 | 2009-02-18 | 中铁十一局集团第一工程有限公司 | Bending machines |
| CN201497676U (en) * | 2009-01-12 | 2010-06-02 | 攀钢集团研究院有限公司 | Bending fixture used for prefabricating fatigue crack |
| CN201681016U (en) * | 2009-12-14 | 2010-12-22 | 中国飞机强度研究所 | Four point bending flexible supporting device |
| CN102620987A (en) * | 2012-03-14 | 2012-08-01 | 安徽农业大学 | Clamp for crop stem bending test |
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