CN102620987A - Clamp for crop stem bending test - Google Patents
Clamp for crop stem bending test Download PDFInfo
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- CN102620987A CN102620987A CN2012100678275A CN201210067827A CN102620987A CN 102620987 A CN102620987 A CN 102620987A CN 2012100678275 A CN2012100678275 A CN 2012100678275A CN 201210067827 A CN201210067827 A CN 201210067827A CN 102620987 A CN102620987 A CN 102620987A
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- anchor clamps
- clamp
- bending test
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Abstract
A clamp for crop stem bending test comprises a clamp holder (3) and a fixed chuck with an annular clamping cavity. The fixed chuck comprises a semicircular upper chuck (1) and a lower chuck (2), the bottom of the lower chuck (2) is fixedly connected with the clamp holder (3), and the upper chuck (1) is detachably connected with the lower chuck (2). A pushable arc-shaped inner chuck (4) is arranged in the annular clamping cavity of the clamp, the top of the inner chuck is vertically, upwardly and fixedly connected with a pitch adjusting screw (9), the pitch adjusting screw (9) is connected with a pitch adjusting nut (10) outside the fixed chuck through a hole at the top of the fixed chuck in a threaded manner, and a clamp groove (102) is arranged at the bottom of the pitch adjusting nut (10) and slidably clamped with a clamp ring (103) corresponding to the upper chuck (1). Straw positions with different diameters are fastened by the pushable arc-shaped inner chuck, the contact area of the inner surface of the clamp and surfaces of straws is increased, the pulling resistance of the clamp is improved, and the problem that ends of the straws are squashed is effectively reduced.
Description
Technical field
The present invention relates to employed anchor clamps in the crop performance test resistant to lodging, relate in particular to a kind of anchor clamps that are used for the test of stem of plant rod bending.
Background technology
Lodging is a ubiquitous problem in the crop production, has become one of critical limitation factor of stable high yield.In high-yield breeding of crops, the lodging resistance that improves crop stem is an important breeding objective.The lodging resistance of stem stalk is high with stem again, stem is thick, the physical strength stem stalk is relevant.Estimate the important indicator of the physical strength of crop stem and normally test the anti-bending property of stem stalk.
Stem stalk semi-girder bending test is that simulation crop stem (like natural conditions such as wind, rain) under horizontal force makes the stem stalk crooked, and its test result can reflect crop stem physical strength resistant to lodging more really.But, carry out at present some joint portions being carried out Mechanics Performance Testing stem stalk semi-girder bending test normally blocks crop by joint after, in the process of the test, the greatest difficulty that runs into is exactly a design of Clamping Apparatus at present.Cause reason of difficulty that following two aspects are arranged:
1, crop homophyletic differing heights or not the homophyletic cane have different diameters, the plain clamp inside surface can't fully contact with the uneven cane surface of thickness, so can't be effectively fixing to it.
Plain clamp is very easily with the conquassation of crop cane joint portion in the 2 bending test processes, or when contacting fixedly in the cane end with the clamp ends hard, with the conquassation of cane end, and can't Validity Test joint portion stem stalk physical strength resistant to lodging.
More than 2 prove absolutely that plain clamp can't satisfy the requirement of cane bending test because of effective fixing plants cane.Therefore exploitation is applicable to the anchor clamps of crop stem semi-girder bending test; And inquire into the inner link of crop stem Mechanical Characters of Composite Ground and mechanical quality through the semi-girder bending test; Resist to fall the seed selection of kind foundation to be provided with the anti-foundation of evaluation index for crop, significant to raising crop yield and quality
Summary of the invention
The present invention provides a kind of bending test anchor clamps of regulating and having protection joint portion stem stalk end to different stem stalk diameters for fear of the deficiency that prior art exists.Can simulate the force-bearing situation of crop stem under the natural weather situation better through these anchor clamps.
Technical solution problem of the present invention adopts following scheme:
A kind of anchor clamps that are used for the crop stem bending test; Comprise clamp holder and a fixed chuck with annular clamping chamber; Its design feature is: said fixed chuck is made up of semicircular ring upper grip, semi-round ring shape lower chuck; The lower chuck bottom clamp holder that is connected, said upper grip is fixedly connected through removable connector with lower chuck; Said anchor clamps also are provided with one can promote chuck in the circular arc; Chuck is arranged in the annular clamping chamber in said; Its top adjusting screw that is connected vertically upward; The hole that said adjusting screw passes the setting of fixed chuck top is threaded with the outer adjusting screw nut of fixed chuck, and said adjusting screw nut bottom is provided with draw-in groove, the snap ring slidingtype clamping of the corresponding setting with upper grip of said draw-in groove.
Design feature of the present invention also is:
Said in chuck the circular arc shaped inside wall and with the corresponding fixed chuck bottom inside wall of interior chuck on be equipped with rubber blanket.
Said anchor clamps can promote interior chuck along evenly being provided with 2-5 on the fixed chuck axial direction.
The fixed chuck axial length of said anchor clamps is 75mm-150mm.
Said rubber blanket is that 3mm-5mm silicon rubber pad is processed by thickness.
Compared with present technology, beneficial effect of the present invention is embodied in:
(1) structure of the present invention has overcome the surperficial defective that fully contacts of stem stalk that the plain clamp inside surface can't be uneven with homophyletic differing heights thickness; Respectively through regulating adjusting screw and adjusting screw nut; Drive can promote interior chuck; The stalk position of different-diameter is carried out fastening, stem stalk folder, hold more stable.
(2) rubber blanket in the present invention is glued at and can promotes on the chuck has not only increased anchor clamps inside surface and stalk surface contact area for soft rubber material, has improved the withdrawal resistance of anchor clamps, has also effectively reduced the phenomenon of stalk end conquassation.
(3) structure of the present invention is not only applicable to the crop cane that the homophyletic differing heights has different-diameter; Also be applicable to the not uneven crop stem of homophyletic thickness; Through the adjusting of distance between upper grip, the lower chuck and the adjusting of adjusting screw and adjusting screw nut, structure of the present invention has the bigger stem stalk diameter scope of application.
Figure of description
Fig. 1 is the cross-sectional view of invention anchor clamps.
Fig. 2 is the longitudinal diagram of anchor clamps of the present invention.
Fig. 3 is the user mode cross-sectional view of anchor clamps clamping major diameter crop material of the present invention.
Fig. 4 is the user mode cross-sectional view of the little crop material of anchor clamps clamping of the present invention.
Fig. 5 is an anchor clamps stereographic map of the present invention.
Fig. 5 a originally is an invention anchor clamps upper grip position stereographic map.
Fig. 5 b is an anchor clamps lower chuck of the present invention position stereographic map.
Fig. 5 c is the annexation structural representation between anchor clamps upper grip of the present invention and adjusting screw(rod), the nut.
Fig. 6 a is the stereographic map of anchor clamps clamping major diameter crop material of the present invention.
Fig. 6 b is the stereographic map of anchor clamps clamping minor diameter crop material of the present invention.
Fig. 7 is that anchor clamps of the present invention and mechanical test machine are used constitutional diagram.
Label among the figure: 1 upper grip, 2 lower chucks, 3 clamp holders, 4 can promote interior chuck, 5 rubber blankets, 6 chuck fixed orifices, 7 chuck hold-down nuts, 8 chuck standing screws, 81 chuck standing screw heads, 9 adjusting screw(rod)s, 10 setting nuts, 11, major diameter crop material, 12 minor diameter crop materials, 13 and be pressure head; 15 is the pressure testing machine lower beam; 16 is slide block; 101 is the threaded area of setting nut, and 102 is the draw-in groove of setting nut, and 103 is snap ring.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
As shown in the figure; Anchor clamps comprise clamp holder 3 and the fixed chuck with annular clamping chamber, and fixed chuck is made up of semicircular ring upper grip 1, semi-round ring shape lower chuck 2; The lower chuck 2 bottoms clamp holder 3 that is connected; Upper grip 1 is provided with tape punching 6 engaging lugs 7 with lower chuck 2 both sides, and upper grip 1 passes through chuck fixed orifice 6 bolted with lower chuck 2, also can be fixedly connected through other modes of removably connecting.
Anchor clamps also are provided with one can promote chuck 4 in the circular arc; Interior chuck 4 is arranged in the annular clamping chamber; Its top adjusting screw 9 that is connected vertically upward; Adjusting screw 9 passes the hole that fixed chuck top is provided with and is threaded with the outer adjusting screw nut 10 of fixed chuck, and adjusting screw nut 10 is provided with the draw-in groove 102 of threaded area 101 and bottom setting, the snap ring 103 rotatable slidingtype clampings of draw-in groove 102 and upper grip 1 corresponding setting.
The circular arc shaped inside wall of interior chuck and with the corresponding fixed chuck bottom inside wall of interior chuck on be equipped with rubber blanket 5.
The fixed chuck axial length of present embodiment anchor clamps is 75mm-150mm.Anchor clamps can promote interior chuck 4 along evenly being provided with 2-5 on the fixed chuck axial direction.The thickness of rubber blanket 5 is 3mm-5mm.Rubber blanket is the silicon rubber pad, both can be anti-skidding, can fastening better stem stalk, and have certain elasticity again, can prevent that crop stem is by conquassation.
When carrying out the performance test of crop material mechanics of bending,
At first stalk is put into the annular clamping chamber between upper grip 1 and the lower chuck 2, promptly on the rubber blanket 5 of upper and lower chuck;
In second step,,, utilize chuck hold-down nut 7 and chuck standing screw 8 and the chuck standing screw head 81 fastening lower chucks of going up through the chuck fixed orifice 6 on upper grip 1 and the lower chuck 2 both sides engaging lugs according to the diameter of stem stalk;
In the 3rd step, 2-5 setting nut 10 on the upper grip 1 of screwing promotes to promote interior chuck 4 and rubber blanket 5, the different diameter parts of stem stalk in the further fastening annular clamping chamber through adjusting screw(rod) 9;
The 4th step was positioned over the anchor clamps of fastening good stalk on the pressure testing machine lower beam 14, regulated the position of stem stalk and pressure head 13, and utilized the slide block 15 on the pressure testing machine lower beam 14 that the handle (3) of anchor clamps is anchored on the pressure testing machine;
The 5th step, the mechanics of bending performance test of stem stalk.
Claims (5)
1. anchor clamps that are used for the crop stem bending test; Comprise clamp holder (3) and a fixed chuck with annular clamping chamber; It is characterized in that: said fixed chuck is made up of semicircular ring upper grip (1), semi-round ring shape lower chuck (2); Lower chuck (2) the bottom clamp holder (3) that is connected, said upper grip (1) is fixedly connected through removable connector with lower chuck (2); Said anchor clamps also are provided with one can promote chuck (4) in the circular arc; Chuck (4) is arranged in the annular clamping chamber in said; Its top adjusting screw (9) that is connected vertically upward; Said adjusting screw (9) passes the hole that fixed chuck top is provided with and is threaded with the outer adjusting screw nut (10) of fixed chuck, is provided with draw-in groove (102) bottom the said adjusting screw nut (10), snap ring (103) the slidingtype clamping of said draw-in groove and the corresponding setting of upper grip (1).
2. to remove 1 described said a kind of anchor clamps that are used for the crop stem bending test according to right, it is characterized in that, said in chuck the circular arc shaped inside wall and with the corresponding fixed chuck bottom inside wall of interior chuck on be equipped with rubber blanket (5).
3. a kind of anchor clamps that are used for the crop stem bending test according to claim 1 is characterized in that: said anchor clamps can promote interior chuck (4) along evenly being provided with 2-5 on the fixed chuck axial direction.
4. a kind of anchor clamps that are used for the crop stem bending test according to claim 1 and 2 is characterized in that: the fixed chuck axial length of said anchor clamps is 75mm-150mm.
5. a kind of anchor clamps that are used for the crop stem bending test according to claim 2 is characterized in that: said rubber blanket (5) is that 3mm-5mm silicon rubber pad is processed by thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210067827.5A CN102620987B (en) | 2012-03-14 | 2012-03-14 | Clamp for crop stem bending test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210067827.5A CN102620987B (en) | 2012-03-14 | 2012-03-14 | Clamp for crop stem bending test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102620987A true CN102620987A (en) | 2012-08-01 |
| CN102620987B CN102620987B (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210067827.5A Expired - Fee Related CN102620987B (en) | 2012-03-14 | 2012-03-14 | Clamp for crop stem bending test |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033424A (en) * | 2013-01-10 | 2013-04-10 | 东北农业大学 | Device for detecting bending resistance of rice stalk |
| CN103245556A (en) * | 2013-05-07 | 2013-08-14 | 上海交通大学 | High-strength steel cylinder piece bending strength testing device |
| CN103344494A (en) * | 2013-07-16 | 2013-10-09 | 中国农业大学 | Straw stretching property test device |
| CN104316413A (en) * | 2014-09-03 | 2015-01-28 | 山东登海种业股份有限公司 | Corn stem lodging resistant force tester |
| CN104596843A (en) * | 2015-01-16 | 2015-05-06 | 福建工程学院 | Special fixture for shearing substitution test of rubber material |
| CN104634552A (en) * | 2014-11-28 | 2015-05-20 | 安徽江淮汽车股份有限公司 | Circlip compressive strength testing tool and method |
| CN105445096A (en) * | 2014-09-23 | 2016-03-30 | 振石集团恒石纤维基业有限公司 | Testing clamp and method for improving mechanical fatigue performance of composite material |
| CN106053224A (en) * | 2016-06-27 | 2016-10-26 | 农业部南京农业机械化研究所 | Axial compression mechanics testing machine |
| CN109342083A (en) * | 2018-11-08 | 2019-02-15 | 深圳市检验检疫科学研究院 | Fixing means and fixture for the test of two wheeled electric balance car security performance |
| CN109596419A (en) * | 2019-01-30 | 2019-04-09 | 湖南农业大学 | A kind of crop stem cutting test stalk quick-gripping device |
| CN110160954A (en) * | 2019-06-12 | 2019-08-23 | 辽宁科技大学 | A kind of single device and method with soil frictional force of measurement plant |
| CN110686984A (en) * | 2019-09-23 | 2020-01-14 | 南京航空航天大学 | Bending load test loading device and loading method for self-sealing type release joint |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033424A (en) * | 2013-01-10 | 2013-04-10 | 东北农业大学 | Device for detecting bending resistance of rice stalk |
| CN103245556A (en) * | 2013-05-07 | 2013-08-14 | 上海交通大学 | High-strength steel cylinder piece bending strength testing device |
| CN103245556B (en) * | 2013-05-07 | 2016-04-06 | 上海交通大学 | Plow-steel cylindrical element bending strength test device |
| CN103344494A (en) * | 2013-07-16 | 2013-10-09 | 中国农业大学 | Straw stretching property test device |
| CN103344494B (en) * | 2013-07-16 | 2015-06-24 | 中国农业大学 | Straw stretching property test device |
| CN104316413A (en) * | 2014-09-03 | 2015-01-28 | 山东登海种业股份有限公司 | Corn stem lodging resistant force tester |
| CN105445096A (en) * | 2014-09-23 | 2016-03-30 | 振石集团恒石纤维基业有限公司 | Testing clamp and method for improving mechanical fatigue performance of composite material |
| CN104634552B (en) * | 2014-11-28 | 2017-06-09 | 安徽江淮汽车集团股份有限公司 | Back-up ring compressive strength test frock and test method |
| CN104634552A (en) * | 2014-11-28 | 2015-05-20 | 安徽江淮汽车股份有限公司 | Circlip compressive strength testing tool and method |
| CN104596843A (en) * | 2015-01-16 | 2015-05-06 | 福建工程学院 | Special fixture for shearing substitution test of rubber material |
| CN106053224A (en) * | 2016-06-27 | 2016-10-26 | 农业部南京农业机械化研究所 | Axial compression mechanics testing machine |
| CN106053224B (en) * | 2016-06-27 | 2018-10-19 | 农业部南京农业机械化研究所 | It is compressed axially mechanics testing machine |
| CN109342083A (en) * | 2018-11-08 | 2019-02-15 | 深圳市检验检疫科学研究院 | Fixing means and fixture for the test of two wheeled electric balance car security performance |
| CN109342083B (en) * | 2018-11-08 | 2024-03-22 | 深圳市检验检疫科学研究院 | Fixing method and fixture for testing safety performance of double-wheel electric balance car |
| CN109596419A (en) * | 2019-01-30 | 2019-04-09 | 湖南农业大学 | A kind of crop stem cutting test stalk quick-gripping device |
| CN110160954A (en) * | 2019-06-12 | 2019-08-23 | 辽宁科技大学 | A kind of single device and method with soil frictional force of measurement plant |
| CN110160954B (en) * | 2019-06-12 | 2024-02-27 | 辽宁科技大学 | Device and method for measuring friction force between plant single element and soil |
| CN110686984A (en) * | 2019-09-23 | 2020-01-14 | 南京航空航天大学 | Bending load test loading device and loading method for self-sealing type release joint |
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| CN102620987B (en) | 2014-01-15 |
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| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Yuxia Inventor after: Xiang Yan Inventor after: Guo Yong Inventor after: He Hongsheng Inventor before: Guo Yong Inventor before: Xiang Yan Inventor before: Chen Yuxia Inventor before: He Hongsheng |
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Free format text: CORRECT: INVENTOR; FROM: GUO YONG XIANG YAN CHEN YUXIA HE HONGSHENG TO: CHEN YUXIA XIANG YAN GUO YONG HE HONGSHENG |
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Granted publication date: 20140115 Termination date: 20200314 |