CN101216389A - Agricultural material dynamic characteristic test apparatus and method - Google Patents
Agricultural material dynamic characteristic test apparatus and method Download PDFInfo
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- CN101216389A CN101216389A CNA2007101919441A CN200710191944A CN101216389A CN 101216389 A CN101216389 A CN 101216389A CN A2007101919441 A CNA2007101919441 A CN A2007101919441A CN 200710191944 A CN200710191944 A CN 200710191944A CN 101216389 A CN101216389 A CN 101216389A
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Abstract
The invention discloses a device and a method for testing mechanical characteristics of agricultural materials. The device comprises a frame, a transmission system, tester accessories, and peripheral terminal equipment, wherein the transmission system is connected with one side of a movable cross-beam; and the peripheral terminal equipment includes a control main board, a display panel, a computer and a printer. The method comprises the following steps of: selecting corresponding test devices according to different requirements of tensile test, compression test, bend test and shear test; calibrating a force sensor and starting the tester and the computer; loading and recording a test sample; and inspecting the test parameter setting and checking to determine whether the test sample is valid. The invention can achieve accurate test of mechanical characteristics of agricultural materials by adopting small-range and high-accuracy force sensor, and the test device special for tensile test, compression test, bend test and shear test is designed. The test device and the software thereof are designed to achieve repeated loading of the materials, thus obtaining low-cycle mechanical characteristic data of agricultural materials.
Description
Technical field
The present invention relates to the test unit of agricultural material dynamic characteristic, be mainly used in to agricultural material stem stalks such as paddy rice, wheat, barley and highland barley, rape, soybean, branch stalk and seed etc. stretch, compress, crooked, the test and the analysis of multinomial mechanics such as shearing, tearing.
Background technology
Along with the development to agricultural sciences, the agricultural material dynamic The Characteristic Study more and more is subjected to researchist's attention.Agricultural crops seed and grain between the handle be connected complexity that power and seed take off from agricultural crops fringe head and threshing the time shattering loss direct relation is arranged; Between crop grain handle and branch stalk and branch stalk and the stem stalk be connected power then with the rice threshing process in the height of band handle rate closely related.Therefore, the size of the connection power between the agricultural crops each several part not only has very big relation with the harvesting loss of crops and the consumption of power, and more the band handle rate to seed after the threshing has very big influence.Provide necessary foundation to the research of agricultural material dynamic performance for the optimization of threshing selection of components and threshing system.Simultaneously, the seed damage phenomenon is also relevant closely with the size and the loading number of times of the suffered load of seed.Therefore, the mechanical characteristic of seed also is necessary under the research fluctuating load.
The mechanical property test device of existing material generally is to be applied to the construction material aspect, and the precision of its technical parameter and sensor can not satisfy the measurement of agricultural material dynamic performance parameter; Simultaneously, the characteristics and of a great variety of himself are arranged on the agricultural material structure, with the construction material significant difference, therefore for the test of agricultural material, existing material mechanical performance test unit is in its configuration aspects also obviously inadequacy; In addition, the mechanical property research of agricultural material has the research needs of its uniqueness, as usually needing to hang down the mechanical property test of the material under loading in week, therefore, the mechanical property test device of existing material can not satisfy the research needs of its uniqueness of agricultural material.
Summary of the invention
The technical matters that quasi-solution of the present invention is determined, be the device that a kind of dynamic characteristic test is provided for agricultural material, can be used for to agricultural material stem stalks such as paddy rice, wheat, barley and highland barley, rape, soybean, branch stalk and seed etc. stretch, compress, crooked, the test and the analysis of multinomial mechanics such as shearing, tearing.
The technical scheme that apparatus of the present invention adopt is: comprise frame and kinematic train, accessories of testing machine and peripheral terminal device composition, described frame comprises that installation left and right sides support is erect in the left and right sides of base, left and right sides support is fixedly connected with entablature topmost, sill is fixedly mounted on the base and connects left and right sides support, moving beam is installed between entablature and the sill and connects left and right sides support, force transducer is installed on the moving beam by the sensor connecting rod, and second line of a couplet joint chair is fixed on the sill; By wearing pin and top connection upper grip and force transducer are linked during tension test, lower chuck is by wearing pin and second line of a couplet joint chair is linked together; Connect kinematic train in moving beam one side, the terminal device of described periphery comprises control main board, display panel, computing machine and printer;
During compression test described upper grip and lower chuck are replaced with top board and lower platen respectively; When bending and shear test upper grip and lower chuck are replaced with seaming chuck and undersetting respectively.
Described kinematic train connects synchronous cog belt by the output of frequency control motor, and synchronous cog belt is connected to moving beam with leading screw.
The technical scheme that the inventive method adopts is to may further comprise the steps successively:
(A) according to the corresponding test unit of situation different choice of tension test, compression test, bending and shear test;
(B) demarcate force transducer and starting characteristics test machine and computing machine;
(C) the first half of clamping sample is with force transducer 5 starting force value zero clearings; The latter half of clamping sample;
(D) typing sample; The check test parameter is provided with; Distortion zero clearing, displacement zero clearing;
(E) begin test; Test finishes automatically or is artificial by " off-test " button, finishes test; Whether the check test data are effective, if effective printing reports.
The invention has the beneficial effects as follows: adopted little range, the force transducer that precision is high can be realized the accurate experiment to the agricultural material dynamic characteristic.Aspect jig Design: consider the own characteristic of agricultural material, designed test units such as special-purpose stretching, compression, bending, shearing.In addition, the design of this test unit and software can realize the loading repeatedly to material, obtains the low all round-robin mechanical characteristic data of material.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Fig. 1 is the structural representation of apparatus of the present invention.
Fig. 2 is the structure enlarged diagram of upper grip 8 among Fig. 1.
Fig. 3 is the structure enlarged diagram of lower chuck 9 among Fig. 1.
Fig. 4 is the apparatus structure enlarged diagram during for compression test of the present invention.
Fig. 5 is the apparatus structure enlarged diagram during for bending test of the present invention.
Apparatus structure enlarged diagram when Fig. 6 shears for the present invention.
Fig. 7 is a drive system structure sketch of the present invention.
Among the figure: 1. entablature, 2. left and right sides support, 3. sensor connecting rod, 4. moving beam, 5. force transducer, 6. pin is 7. worn in top connection, 8. upper grip, and 9. lower chuck is 10. worn pin, 11. second line of a couplet joint chair, 12. sills, 13. bases, 14. rotate retained part, 15. bolts, 16. top board, 17. seeds, 18. lower platens, 19. computing machines, 20. printer, 21. seaming chucks, 22. undersettings, 23. seaming chucks, 24. synchronous cog belt, 25. belt wheels, 26. frequency control motors, 27. leading screws.
Embodiment
As shown in Figure 1, erect in the left and right sides of base 13 left and right sides support 2 be installed, left and right sides support 2 is fixedly connected with entablature 1 topmost, sill 12 is fixedly mounted on the base 13 and connects left and right sides support 2, second line of a couplet joint chair 11 is fixed on the sill 12, moving beam 4 is installed between entablature 1 and the sill 12 and connects left and right sides support 2, constitutes base frame with this.Moving beam 4 can move up and down in left and right sides support 2, and with the stroke that is stretched and compress, its stroke is by upper and lower spacing control; Force transducer 5 is installed on the moving beam 4 by sensor connecting rod 3, by wearing pin 7 and top connection 6 upper grip 8 and force transducer 5 is linked again; Force transducer 5 has adopted little range, high-precision sensor, its pilot strength measurement scope is 2～500N, accuracy of measurement be indicating value ± 0.5%, resolving power is 1/240000.The replacing chuck only need take out wears pin 7, can exchange chuck for; Lower chuck 9 can be dismantled and be changed flexibly by wearing pin 10 and second line of a couplet joint chair 11 is linked together, and changes lower chucks 9 with upper grip 8, only needs also to take out that to wear pin 10 promptly replaceable; Second line of a couplet joint chair 11 is fixed on the sill 12.
Be the front view of upper grip 8 and lower chuck 9 shown in Fig. 2,3, wherein lower chuck 9 can be adjusted the holding angle degree, loosers a bolt 15 can rotate retained part 14, adjusts to the angle that needs, and tights a bolt 15 to get final product.Consider the own characteristic of agricultural material, the lower end of upper grip 8 adopts the design of sharp mouth type, plane chimeric, is suitable for the elongated branch stalk of clamping, can fully meet the requirement of agricultural material tension test.Lower chuck 9 adopts the angle adjustable jig Design, it adjusts angular range: ± 45 degree, chimeric plane adopt the rubber plane chimeric, and this chuck can change angle as required in process of the test, to change the force direction that is subjected to of subjects, can satisfy the mechanical characteristic experiment of material different angles.
Be respectively compression, the crooked and structural representation when shearing shown in Fig. 4,5,6, peripheral terminal device comprises control main board, display panel, computing machine 19 and printer 20.Corresponding program is arranged, to realize measurement, control, record and data processing etc. in the computing machine 19.Only need during test last lower clamp pulled down and change corresponding pressure head and bearing gets final product.During compression test upper grip 8 and lower chuck 9 are replaced with top board 16 and lower platen 18 respectively; When bending and shear test upper grip 8 and lower chuck 9 are replaced with seaming chuck 21,23 and undersetting 22 respectively.
As shown in Figure 7, be the drive mechanism synoptic diagram of test unit, connect kinematic train in moving beam 4 one sides, this system is divided into the transmission of three grades of bands, output by frequency control motor 26 connects synchronous cog belt 24, and synchronous cog belt 24 is connected to moving beam 4 with leading screw 27.For guaranteeing the accuracy of ratio of gear, adopt synchronous cog belt 24, for making things convenient for speed governing, drive motor is selected frequency control motor 26 for use, by the bolt transmission straight line up and down that rotation is converted into moving beam 4 is moved, thus realize to material apply test power in case to test unit apply draw or press test power.
(B) demarcate force transducer and starting characteristics test machine and computing machine;
(C) the first half of clamping sample, the power zero clearing; The latter half of clamping sample;
(D) typing sample; The check test parameter is provided with; Distortion zero clearing, displacement zero clearing;
(E) begin test; Test finishes automatically or is artificial by " off-test " button, finishes test; Whether the check test sample is effective, if effective printing reports.
Test method of the present invention is: according to the corresponding test fixture of situation different choice of tension test, compression test, bending and shear test; With counterweight sensor 5 is demarcated, and in computing machine 19, set correction factor; Starting characteristics test machine and computing machine 19; The first half with anchor clamps clamping sample; With force transducer 5 starting force value zero clearings; Make moving beam 4 move to the latter half of suitable position and clamping sample; The relevant information of typing sample in computing machine 9, and set the test parameters setting; Distortion zero clearing, displacement zero clearing with force transducer 5; The starting characteristics test button is tested; Test automatically finishes or manually press " off-test " button on computing machine 19 control desks, finishes to test; Whether the check test data are effective, if effective printing reports.
Claims (5)
1. the test unit of an agricultural material dynamic characteristic, comprise frame and kinematic train, accessories of testing machine and peripheral terminal device are formed, it is characterized in that: described frame comprises the left and right sides setting installation left and right sides support (2) of base (13), left and right sides support (2) is fixedly connected with entablature (1) topmost, sill (12) is fixedly mounted on the last and connection left and right sides support (2) of base (13), moving beam (4) is installed between entablature (1) and the sill (12) and connects left and right sides support (2), force transducer (5) is installed on the moving beam (4) by sensor connecting rod (3), and second line of a couplet joint chair (11) is fixed on the sill (12); By wearing pin (7) and top connection (8) upper grip (8) and force transducer (5) are linked during tension test, lower chuck (9) is by wearing pin (10) and second line of a couplet joint chair (11) is linked together; Connect kinematic train in moving beam (4) one sides, the terminal device of described periphery comprises control main board, display panel, computing machine (19) and printer (20).
2. the test unit of agricultural material dynamic characteristic according to claim 1 is characterized in that: during compression test described upper grip (8) and lower chuck (9) are replaced with top board (16) and lower platen (18) respectively; When bending and shear test upper grip (8) and lower chuck (9) are replaced with seaming chuck (21,23) and undersetting (22) respectively.
3. the test unit of agricultural material dynamic characteristic according to claim 1, it is characterized in that: described kinematic train connects synchronous cog belt (24) by the output of frequency control motor (26), and synchronous cog belt (24) is connected to moving beam (4) with leading screw (27).
4. the test unit of agricultural material dynamic characteristic according to claim 1 is characterized in that, the lower end of the upper grip (8) that tension test is used is sharp mouth type; Chimeric plane adopts the plane chimeric.
5. the test method of an agricultural material dynamic characteristic is characterized in that may further comprise the steps successively:
(A) according to the corresponding test unit of situation different choice of tension test, compression test, bending and shear test;
(B) demarcate force transducer (5) and starting characteristics test machine and computing machine (19);
(C) the first half of clamping sample is with the zero clearing of force transducer (5) starting force value; The latter half of clamping sample;
(D) typing sample; The check test parameter is provided with; Distortion zero clearing, displacement zero clearing;
(E) begin test; Test finishes automatically or is artificial by " off-test " button, finishes test; Whether the check test data are effective, if effective printing reports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101919441A CN101216389A (en) | 2007-12-27 | 2007-12-27 | Agricultural material dynamic characteristic test apparatus and method |
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|---|---|---|---|
| CNA2007101919441A CN101216389A (en) | 2007-12-27 | 2007-12-27 | Agricultural material dynamic characteristic test apparatus and method |
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| CN101216389A true CN101216389A (en) | 2008-07-09 |
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| CNA2007101919441A Pending CN101216389A (en) | 2007-12-27 | 2007-12-27 | Agricultural material dynamic characteristic test apparatus and method |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101629896A (en) * | 2009-03-12 | 2010-01-20 | 北京林业大学 | Method for researching friction anchoring property between forest root system and soil and device therefor |
| CN102620987A (en) * | 2012-03-14 | 2012-08-01 | 安徽农业大学 | Clamp for crop stem bending test |
| CN103257073A (en) * | 2013-06-03 | 2013-08-21 | 长春新试验机有限责任公司 | Electric cylinder type single shaft loading machine |
| CN103471934A (en) * | 2013-09-26 | 2013-12-25 | 邢辉 | Equipment capable of determining brown rice bending stress |
| CN103913380A (en) * | 2014-04-01 | 2014-07-09 | 长安大学 | All-in-one machine for testing soil engineering tension-compression strength |
| CN104165794A (en) * | 2014-07-21 | 2014-11-26 | 华南农业大学 | Agricultural material working condition simulation mechanism and agricultural material physical property tester |
| CN105181511A (en) * | 2015-07-31 | 2015-12-23 | 铁道第三勘察设计院集团有限公司 | Commonly used geotechnical test instrument output value in-situ verification and calibration device |
| CN108007774A (en) * | 2017-11-14 | 2018-05-08 | 东旭科技集团有限公司 | The apparatus and method for measuring flaky material Young's modulus |
| CN108169118A (en) * | 2018-01-10 | 2018-06-15 | 安徽农业大学 | A kind of portable carpopodium biomechanics characteristic test device |
| CN109556944A (en) * | 2018-10-26 | 2019-04-02 | 中国航发北京航空材料研究院 | A kind of high throughput mechanical testing equipment |
| CN110672509A (en) * | 2019-09-06 | 2020-01-10 | 安徽农业大学 | Straw cutting performance testing device and testing method |
| CN112857992A (en) * | 2020-12-31 | 2021-05-28 | 中国汽车技术研究中心有限公司 | Simulation calibration method for mechanical properties of carbon fiber material |
| CN114026404A (en) * | 2019-03-28 | 2022-02-08 | 伊利诺斯工具制品有限公司 | Collision mitigation device and material testing system with collision mitigation device |
| WO2022041066A1 (en) * | 2020-08-27 | 2022-03-03 | 国高材高分子材料产业创新中心有限公司 | Test method and system for mechanical properties of material |
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2007
- 2007-12-27 CN CNA2007101919441A patent/CN101216389A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101629896A (en) * | 2009-03-12 | 2010-01-20 | 北京林业大学 | Method for researching friction anchoring property between forest root system and soil and device therefor |
| CN102620987A (en) * | 2012-03-14 | 2012-08-01 | 安徽农业大学 | Clamp for crop stem bending test |
| CN103257073A (en) * | 2013-06-03 | 2013-08-21 | 长春新试验机有限责任公司 | Electric cylinder type single shaft loading machine |
| CN103471934A (en) * | 2013-09-26 | 2013-12-25 | 邢辉 | Equipment capable of determining brown rice bending stress |
| CN103913380B (en) * | 2014-04-01 | 2017-02-08 | 长安大学 | All-in-one machine for testing soil engineering tension-compression strength |
| CN103913380A (en) * | 2014-04-01 | 2014-07-09 | 长安大学 | All-in-one machine for testing soil engineering tension-compression strength |
| CN104165794A (en) * | 2014-07-21 | 2014-11-26 | 华南农业大学 | Agricultural material working condition simulation mechanism and agricultural material physical property tester |
| CN105181511B (en) * | 2015-07-31 | 2017-12-15 | 铁道第三勘察设计院集团有限公司 | Conventional earthwork test Instrument power generating value verification caliberating device in situ |
| CN105181511A (en) * | 2015-07-31 | 2015-12-23 | 铁道第三勘察设计院集团有限公司 | Commonly used geotechnical test instrument output value in-situ verification and calibration device |
| CN108007774A (en) * | 2017-11-14 | 2018-05-08 | 东旭科技集团有限公司 | The apparatus and method for measuring flaky material Young's modulus |
| CN108169118A (en) * | 2018-01-10 | 2018-06-15 | 安徽农业大学 | A kind of portable carpopodium biomechanics characteristic test device |
| CN108169118B (en) * | 2018-01-10 | 2024-03-01 | 安徽农业大学 | Portable fruit handle biomechanics characteristic testing device |
| CN109556944A (en) * | 2018-10-26 | 2019-04-02 | 中国航发北京航空材料研究院 | A kind of high throughput mechanical testing equipment |
| CN109556944B (en) * | 2018-10-26 | 2021-04-20 | 中国航发北京航空材料研究院 | High-flux mechanical test device |
| CN114026404A (en) * | 2019-03-28 | 2022-02-08 | 伊利诺斯工具制品有限公司 | Collision mitigation device and material testing system with collision mitigation device |
| CN110672509A (en) * | 2019-09-06 | 2020-01-10 | 安徽农业大学 | Straw cutting performance testing device and testing method |
| WO2022041066A1 (en) * | 2020-08-27 | 2022-03-03 | 国高材高分子材料产业创新中心有限公司 | Test method and system for mechanical properties of material |
| CN112857992A (en) * | 2020-12-31 | 2021-05-28 | 中国汽车技术研究中心有限公司 | Simulation calibration method for mechanical properties of carbon fiber material |
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Open date: 20080709 |