CN106885730A - Bast-fibre multi-angle tear test fixture and test method - Google Patents

Bast-fibre multi-angle tear test fixture and test method Download PDF

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Publication number
CN106885730A
CN106885730A CN201710231088.1A CN201710231088A CN106885730A CN 106885730 A CN106885730 A CN 106885730A CN 201710231088 A CN201710231088 A CN 201710231088A CN 106885730 A CN106885730 A CN 106885730A
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China
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bast
slide rail
angle
fibre
test fixture
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CN201710231088.1A
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CN106885730B (en
Inventor
吴明亮
王加跃
谢伟
向伟
包攀峰
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Hunan Agricultural University
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Hunan Agricultural University
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02Details
    • G01N3/04Chucks
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014Type of force applied
    • G01N2203/0016Tensile or compressive
    • G01N2203/0017Tensile
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0058Kind of property studied
    • G01N2203/006Crack, flaws, fracture or rupture
    • G01N2203/0067Fracture or rupture
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/026Specifications of the specimen
    • G01N2203/0262Shape of the specimen
    • G01N2203/0278Thin specimens
    • G01N2203/0282Two dimensional, e.g. tapes, webs, sheets, strips, disks or membranes
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/04Chucks, fixtures, jaws, holders or anvils
    • G01N2203/0423Chucks, fixtures, jaws, holders or anvils using screws
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/66Disintegrating fibre-containing textile articles to obtain fibres for re-use

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The invention discloses a kind of bast-fibre multi-angle tear test fixture and test method, test fixture includes base, slide unit and slide rail, slide unit is arranged on base by angle adjusting mechanism, slide rail is slidedly arranged on slide unit, fixation kit for fixing crudefiber crop stalk is installed, test fixture also includes the slip drive component for ordering about slide rail slip on slide rail.Test method is mainly crudefiber crop stalk is fixed on test fixture, tear test is carried out using test machine for mechanism, by adjusting the gliding cable structure of slide rail on slide unit in process of the test, so that the angle between the bast-fibre for tearing straight up and stalk is constant, so that it is guaranteed that bast-fibre tears the constant of angle during tear.The invention can ensure that tear angle is constant during tear, and settable different tear angles, realize that multi-angle tears, for the research and development of whole bone formula bast-fibre decortication machinery provide technical basis.

Description

Bast-fibre multi-angle tear test fixture and test method
Technical field
The present invention relates to decorticating harvest machinery technical field, and in particular to a kind of fiber crops determined suitable for multi-angle tear edge Fiber multi-angle tear test fixture and test method.
Background technology
China's bast fiber industries economic total volume more than 110,000,000,000 yuan, wherein about 40,000,000,000 yuan of agriculture value, industrial output value about 700 Hundred million yuan, cultivated area and the output value account for the 3.3% and 8.3% of China's special type industrial crops cultivated area and the output value, hemp product respectively 2,000,000,000 dollars of year foreign exchange earning.In recent years, with the increasingly depleted of fossil resources, bast-fibre is because excellent with ecology, environmental protection etc. Good characteristic and it is hot standby doted on by consumer, its demand is increasing year by year, the global annual speedup 8% of natural fiber, and China is 15%. However, the development potentiality of China's bast fiber industries and space fully are excavated out far away.The fast development of modern science and technology will be expedited the emergence of Go out a huge crudefiber crop new industry, China's 21 century fine new growth engines certainly will be turned into.
The characteristic such as flaxen fiber has inexpensive light weight, natural degradation, specific strength and specific modulus is high, is widely used in fiber reinforcement The preparation of composite.With bast-fibre as primary raw material, using non-woven fabrics manufacturing process and distinctive aftertreatment technology development Environment-friendly type fiber crops mulch film, it is high less than intensity, insulation, moistening effect it is good, after crop growthing development, and use being effectively facilitated Degradation property in soil is good, pollution-free, and plays the role of fertilizing soil.
However, the existing bast-fibre decortication machinery of in the market is mostly broken bone formula decortication machinery, there is decorticating difficulty in it Greatly, the shortcomings of flaxen fiber of acquisition impurity containing boon, hards, colloid etc. is more, constrains China's bast-fibre mechanization decorticating Development.The whole bone formula mechanized harvest of China's crudefiber crop is in the stage of ground zero, whole bone formula decorticating machine existing in the market The need for tool cannot meet crudefiber crop decorticating, need to determine the tear resistance of crudefiber crop stalk bast fiber for this, to be whole bone formula The research and development of crudefiber crop decortication machinery provide technical basis.
The content of the invention
The technical problem to be solved in the present invention is to overcome the shortcomings of that prior art is present, there is provided a kind of simple structure, be easy to Making, low cost, efficient work and reliable and stable bast-fibre multi-angle tear test fixture, correspondingly provide a kind of crudefiber crop The method that fiber multi-angle tear test fixture carries out tear test.
In order to solve the above technical problems, the present invention uses following technical scheme:
A kind of bast-fibre multi-angle tear test fixture, including base, slide unit and slide rail, the slide unit pass through angular adjustment machine Structure is arranged on base, and the slide rail is slidedly arranged on slide unit, is provided with the slide rail for fix crudefiber crop stalk fixed group Part, the test fixture also includes the slip drive component for ordering about slide rail slip.
Above-mentioned bast-fibre multi-angle tear test fixture, it is preferred that the fixation kit includes that crudefiber crop stalk can be supplied The first location hole and the second location hole for passing through, first location hole and the second location hole are spaced cloth along slide rail glide direction Put, the fixation kit also includes crudefiber crop stalk being fixed in the first location hole or being unclamped the adjustable fixation of crudefiber crop stalk Part.
Above-mentioned bast-fibre multi-angle tear test fixture, it is preferred that the slide rail is provided with for housing crudefiber crop stalk Containing groove.
Above-mentioned bast-fibre multi-angle tear test fixture, it is preferred that be connected with the slide rail the first fixed block and Second fixed block, on first fixed block, the adjustable fixture is that screw thread cooperation is installed on to first location hole Trip bolt on first fixed block, second fixed block is across the openend of containing groove, and second fixed block sets Fluted, the groove combines composition second location hole with containing groove;Second fixed block or slide rail are provided with For inserting the positioning element that second location hole one end is positioned to crudefiber crop stalk.
Above-mentioned bast-fibre multi-angle tear test fixture, it is preferred that the angle adjusting mechanism includes fixed pole With adjustable pole, the lower end of the fixed pole is fixed on base, and the upper end of the fixed pole is hinged with slide rail, it is described can Adjusting pole includes the slide bar of sleeve and slip cap in sleeve, and the sleeve is fixed on base, and the slide rail is provided with cunning Groove, the slide bar is connected by the articulated elements being slidedly arranged in the chute with the chute, is provided between the slide bar and sleeve Adjusting part for adjusting fixed slip bar sliding position.
Above-mentioned bast-fibre multi-angle tear test fixture, it is preferred that the adjusting part is including latch, located at sleeve First jack on barrel and some second jacks on slide bar, some second jacks are along slide bar arranged for interval, institute Latch is stated to be inserted in first jack and any one second jack.
Above-mentioned bast-fibre multi-angle tear test fixture, it is preferred that the slip drive component includes being arranged on to be slided Tooth bar on rail, the rotary drive on slide unit and the gear being connected with the drive end of rotary drive, the tooth Wheel and rack is engaged.
Above-mentioned bast-fibre multi-angle tear test fixture, it is preferred that the slide unit is provided with fine for guiding crudefiber crop The leading block in dimension tear direction, the leading block is by way of displacement adjusting part along slide unit direction can adjust displacement On slide rail, the displacement adjusting part includes two mounting seats being fixedly arranged on slide rail, and each mounting seat is provided with along slide unit The slip hole of glide direction arrangement, the rotating shaft two ends of the leading block are slidedly arranged in two slip holes of mounting seat respectively, institute State the frictional force for having between rotating shaft and slip hole and hindering rotating shaft to slide.
Above-mentioned bast-fibre multi-angle tear test fixture, it is preferred that the base includes base plate and is fixed in base plate On connecting cylinder, the through hole through connecting cylinder opposite sides barrel is offered on the connecting cylinder.
A kind of test method that tear test is carried out using above-mentioned bast-fibre multi-angle tear test fixture, including it is following Step:
(A)By the floor installation of bast-fibre multi-angle tear test fixture on the objective table of test machine for mechanism, by fixation Be fixed on crudefiber crop stalk on slide rail by component, then the bast-fibre of a part for crudefiber crop stalk tear in advance is clamped in into mechanics examination Test on the upper grip of machine, the angle of slide rail glide direction and base is regulated to testing set angle finally by angle adjusting mechanism Degree;
(B)Start mechanics machine and rotary drive assembly, the upper grip of mechanics machine is moved straight up and loaded While, rotary drive assembly orders about slide rail and is moved to the opposite direction that bast-fibre tears with crudefiber crop stalk, and upper grip is perpendicular The speed of straight motion upwards is equal to the gliding cable structure of slide rail.So as to ensure that with test machine for mechanism upper grip move straight up into Angle between the bast-fibre and crudefiber crop stalk of row tear is constant, it is ensured that the constant of angle is torn in process of the test;By changing Varied angle governor motion can be set different slide unit inclination angles, realize that multi-angle tears.
Compared with prior art, the advantage of the invention is that:Bast-fibre multi-angle tear test fixture of the invention and When tear test is carried out, by floor installation on the objective table of mechanics machine, crudefiber crop stalk is fixed on slide rail to test method On, the bast-fibre of a part of tear in advance is clamped on the upper grip of mechanics machine, being moved upwards in upper grip is carried out Slide rail is ordered about while loading by sliding drive component accordingly to move, it is upward with upper grip by the gliding cable structure for adjusting slide rail The speed of motion is equal so that move the bast-fibre and crudefiber crop stalk for being torn straight up with test machine for mechanism upper grip Between angle it is constant, you can ensure bast-fibre tear angle it is constant.Meanwhile, slide rail slip side is adjusted by angle adjusting mechanism To the angle with base, moreover it is possible to realize that bast-fibre tears the regulation of angle, its tear angle adjustable extent is 90 ° ~ 180 °, energy Enough meet the demand of different tear angle experiments.The bast-fibre multi-angle tear test clamp structure is simple, be easy to make, into This is low, completion bast-fibre multi-angle tear test that can be efficiently high-quality, is the research and development of whole bone formula crudefiber crop decortication machinery Technical basis are provided.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of bast-fibre multi-angle tear test fixture.
Fig. 2 is the main structure diagram of bast-fibre multi-angle tear test fixture.
Fig. 3 is the backsight structural representation of slide unit.
Fig. 4 is the present invention looks up structural representation of slide rail.
Marginal data:
1st, base;11st, base plate;12nd, connecting cylinder;121st, through hole;2nd, slide unit;3rd, slide rail;31st, containing groove;32nd, chute;4th, it is solid Determine component;41st, the first location hole;42nd, the second location hole;43rd, the first fixed block;44th, the second fixed block;45th, trip bolt;5、 Fixed pole;6th, adjustable pole;61st, sleeve;62nd, slide bar;63rd, latch;64th, the first jack;65th, the second jack;7th, tooth bar;8、 Rotary drive;9th, gear;10th, leading block;20th, slip hole;30th, rotating shaft.
Specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
As depicted in figs. 1 and 2, the bast-fibre multi-angle tear test fixture of the present embodiment, including base 1, the and of slide unit 2 Slide rail 3, slide unit 2 is arranged on base 1 by angle adjusting mechanism, and slide rail 3 is slidedly arranged on slide unit 2, and angle adjusting mechanism can be adjusted The angle of section slide unit 2 and base 1, and then the angle of the glide direction of slide rail 3 and base 1 is adjusted, it is provided with for fixing on slide rail 3 The fixation kit 4 of crudefiber crop stalk, test fixture also includes the slip drive component for ordering about the slip of slide rail 3.
When tear test is carried out, base 1 is arranged on the objective table of mechanics machine, crudefiber crop stalk is fixed on slide rail On 3, the bast-fibre of a part of tear in advance is clamped on the upper grip of mechanics machine, being moved upwards in upper grip is carried out Order about that slide rail 3 is accordingly mobile by sliding drive component while loading, by adjust the gliding cable structure of slide rail 3 and upper grip to The speed of upper motion is equal so that move the bast-fibre and crudefiber crop stem for being torn straight up with test machine for mechanism upper grip Angle between stalk is constant, you can ensure that bast-fibre tear angle is constant.Meanwhile, slide rail 3 is adjusted by angle adjusting mechanism and is slided The angle of dynamic direction and base 1, moreover it is possible to realize that bast-fibre tears the regulation of angle, its tear angle adjustable extent is 90 ° ~ 180 °, disclosure satisfy that the demand of different tear angle experiments.The bast-fibre multi-angle tear test clamp structure is simple, be easy to Make, low cost, completion bast-fibre multi-angle tear test that can be efficiently high-quality is whole bone formula crudefiber crop decortication machinery Research and development provide technical basis.
In the present embodiment, fixation kit 4 includes the first location hole 41 and the second location hole 42 that crudefiber crop stalk can be supplied to pass through, , along the glide direction arranged for interval of slide rail 3, same crudefiber crop stalk can be located in simultaneously for first location hole 41 and the second location hole 42 In first location hole 41 and the second location hole 42, fixation kit 4 also includes crudefiber crop stalk can be fixed in the first location hole 41 Or unclamp the adjustable fixture of crudefiber crop stalk.This kind of fixation kit of structure type 4 has simple structure, easy to operate, solid Fixed reliable and stable advantage.
In the present embodiment, slide rail 3 is provided with the containing groove 31 for housing crudefiber crop stalk.Because crudefiber crop stalk is irregular Cylinder, when slide rail 3 is designed as smooth flat, crudefiber crop stalk is too small with the contact area on the surface of slide rail 3, is unfavorable for crudefiber crop The fixation of stalk.The present embodiment sets containing groove 31 on slide rail 3, and crudefiber crop stalk is contained in containing groove 31, not only increases Big contact area of the crudefiber crop stalk with slide rail 3, while containing groove 31 plays positioning action, maximum possible to crudefiber crop stalk again The displacement for reducing crudefiber crop stalk.Containing groove 31 is used cooperatively with fixation kit 4, can play it is solid and reliable spacing and Fixation, can eliminate the experimental data error come by stalk glide band in process of the test.
In the present embodiment, as shown in Figure 1 to Figure 3, the first fixed block 43 and the second fixed block 44 are connected with slide rail 3, the On the first fixed block 43, adjustable fixture is that screw thread coordinates the fastening spiral shell being installed on the first fixed block 43 to one location hole 41 Nail 45, the second fixed block 44 is across the openend of containing groove 31, and the second fixed block 44 is provided with groove, groove and containing groove 31 combinations constitute the second location hole 42.First location hole 41 and the second location hole 42 are formed using said structure, it is possible to increase knot The compactedness of structure, reduction make manufacture difficulty and cost.Above-mentioned first location hole 41 is circular hole, and its aperture is slightly larger than crudefiber crop stem Stalk;Groove is semi-circular groove with containing groove 31, and both cooperatively form the second location hole 42 of a circle, the second location hole 42 Aperture be also slightly larger than crudefiber crop stalk.
Preferably, the present embodiment is provided with for crudefiber crop stalk insertion the second location hole 42 one end on the second fixed block 44 The positioning element for being positioned, when fixed crudefiber crop stalk is installed, crudefiber crop stalk one end is inserted into through the first location hole 41 In second location hole 42, one end that crudefiber crop stalk is inserted into the second location hole 42 offsets with positioning element and forms positioning, greatly The big installation for facilitating crudefiber crop stalk is fixed, beneficial to raising test efficiency.Specifically, the positioning element connects with the second fixed block 44 It is connected in one, its groove one end for being located at the second fixed block 44.In other embodiments, positioning element can also be located at slide rail 3 On.
In the present embodiment, angle adjusting mechanism includes fixed pole 5 and adjustable pole 6, and the lower end of fixed pole 5 is fixed in On base 1, the upper end of fixed pole 5 is hinged with slide rail 3, and adjustable pole 6 includes sleeve 61 and slip cap in sleeve 61 Slide bar 62, sleeve 61 is fixed on base 1, and slide rail 3 is provided with chute 32, and slide bar 62 is by the articulated elements that is slidedly arranged in chute 32 It is connected with chute 32, slide bar 62 can be slided along chute 32 and can rotated around the axis of articulated elements, be set between slide bar 62 and sleeve 61 There is the adjusting part for adjusting the sliding position of fixed slip bar 62.By adjusting sliding position of the slide bar 62 in sleeve 61, The entire length of adjustable pole 6 is adjusted, and then realizes the angle of inclination of regulation slide unit 2.
In the present embodiment, adjusting part includes latch 63, first jack 64 on the barrel of sleeve 61 and is located at Some second jacks 65 on slide bar 62, some second jacks 65 are inserted in the first jack along the arranged for interval of slide bar 62, latch 63 64 and any one second jack 65 in.When latch 63 is plugged in the second different jacks 65, slide bar 62 is in sleeve 61 Sliding position is different, namely the entire length of adjustable pole 6 is different, and then realizes the angle of inclination of regulation slide unit 2.Preferably, , through the two lateral walls of sleeve 61, through slide bar 62, such latch 63 can be from sleeve 61 for the second jack 65 for first jack 64 Side is through to the opposite side of sleeve 61 through slide bar 62, ensure that the connective stability of slide bar 62 and sleeve 61.
The angle adjusting mechanism of the present embodiment is interrupted modulating, and in other embodiments, angle adjusting mechanism can also Using the structure type of step-less adjustment, for example, the angle adjusting mechanism of the present embodiment need to only change adjusting part is capable of achieving nothing Pole is adjusted, and specifically, adjusting part is revised as to coordinate the screw on sleeve 61 only with a screw thread, by screwing The screw compresses or unclamps the outer wall of slide bar 62, you can slide bar 62 is fixed on any sliding position by realization.
In the present embodiment, as shown in Figure 1, Figure 2 and Figure 4, sliding drive component includes tooth bar 7, rotary drive 8 and tooth Wheel 9, tooth bar 7 is arranged on slide rail 3, and rotary drive 8 is arranged on slide unit 2 by connecting plate, gear 9 and rotary drive 8 Drive end be connected, gear 9 is engaged with tooth bar 7.Rotary drive 8 uses buncher, buncher mate gear 9 and tooth bar 7 mechanical driving structure, greatly simplifies transmission system, while reducing machine vibration, stability increases, energy consumption is small and noise Small, while the rotating speed of buncher is adjustable, the speed for ordering about the slip of slide rail 3 is also adjustable, disclosure satisfy that different tear speed during experiment The situation of rate.
In the present embodiment, slide unit 2 is provided with the leading block 10 for guiding bast-fibre to tear direction, leading block 10 Displacement adjusting part to be arranged on slide rail 3 by way of adjusting displacement along the direction of slide unit 2, displacement adjusting part includes solid Two mounting seats on slide rail 3, each mounting seat is provided with the slip hole 20 arranged along the glide direction of slide unit 2, leading block 10 The two ends of rotating shaft 30 be slidedly arranged on respectively in two slip holes of mounting seat 20, between rotating shaft 30 and slip hole 20 have hinder rotating shaft 30 frictional force slided.During experiment, the edge of leading block 10 is on same vertical guide with the tear point of bast-fibre, is oriented to The edge of pulley 10 is resisted against the bast-fibre outside of advance tear, and leading block 10 plays certain spacing work to bast-fibre With can limit bast-fibre and shift, so as to ensure that angle of tear size is constant.Because the tear edge of bast-fibre is little, Leading block 10 can only be held in position by rotating shaft 30 with the frictional force of slip hole 20, without producing sliding, need regulation During 10 position of leading block, only need artificially to move the two ends of rotating shaft 30 manually, you can overcoming frictional force to act on makes leading block 10 Moved along slip hole 20.
In process of the test, definition " bast-fibre for tearing apart straight up and crudefiber crop stalk(Slide rail 3)Between within angle It is angle of tear ", how the focusing on of tear test ensures during tear that angle of tear size is constant and can carry out polygonal Degree tear test, therefore will ensure the bast-fibre that is torn out all the time vertically.But in process of the test, crudefiber crop Stalk is fixed within containing groove 31, and tear point might have skew, now by adjusting the position of leading block 10, can make The edge of leading block 10 and tear point are obtained in same vertical direction, experiment difficulty can be so reduced, test efficiency is improved.It is above-mentioned It is the simple structure of displacement adjusting part, easy to adjust, easy to implement.
Above-mentioned mounting seat can be provided with the iron plate of slip hole 20, and first the iron plate of side is welded on slide rail 3 during installation, One end of rotating shaft 30 is inserted in the slip hole 20 of the iron plate, the other end is inserted in the slip hole 20 of opposite side iron plate, then will be another The iron plate of side is welded on slide rail 3.
In the present embodiment, base 1 includes base plate 11 and the connecting cylinder 12 being fixed on base plate 11, is offered on connecting cylinder 12 Through the through hole 121 of the opposite sides barrel of connecting cylinder 12, the through hole 121 is through the opposite sides barrel of connecting cylinder 12 and by connection 12 axis of cylinder.Set through hole 121 on connecting cylinder 12 to be easy to be fixed to base 1 on mechanics machine, mechanics examination in the present embodiment Machine is tested using the existing omnipotent mechanics machine of SANS-CMT6104 types microcomputer controlled electronic.
In the present embodiment, slide unit 2 is provided with two sliding grooves being oppositely arranged that are open, and two sides of slide rail 3 correspond to respectively to be slided In two sliding grooves.
A kind of test method that tear test is carried out using above-mentioned bast-fibre multi-angle tear test fixture, including it is following Step:
(A)The base 1 of bast-fibre multi-angle tear test fixture is arranged on the objective table of test machine for mechanism, by fixation Be fixed on crudefiber crop stalk on slide rail 3 by component 4, and the angle of the glide direction of slide rail 3 and base 1 is regulated by angle adjusting mechanism (The inclination angle of slide unit 2), then by the bast-fibre of a part for crudefiber crop stalk tear in advance by guide(Leading block 10)Guiding It is clamped on the upper grip of mechanics machine afterwards;
(B)Start mechanics machine and rotary drive assembly, the upper grip of mechanics machine is moved straight up and loaded While, rotary drive assembly orders about slide rail 3 and is moved to the opposite direction that bast-fibre tears with crudefiber crop stalk, and upper grip is perpendicular The speed of straight motion upwards is equal to the gliding cable structure of slide rail 3, is moved straight up with test machine for mechanism upper grip so as to ensure that Angle between the bast-fibre and crudefiber crop stalk that are torn is constant, it is ensured that the constant of angle is torn in process of the test;Pass through Change angle adjusting mechanism and the different inclination angles of slide unit 2 can be set, realize that multi-angle tears.
Tear test is carried out using the bast-fibre multi-angle tear test fixture of the present embodiment, in concrete operations:Thing First set the loading speed of mechanics machine and the rotating speed of buncher;Bast-fibre multi-angle tear test fixture is passed through Connecting cylinder 12 on base 1 is fixed on the objective table of mechanics machine, and the crudefiber crop stalk needed for experiment is penetrated into the first positioning Hole 41, until in reaching crudefiber crop stalk and penetrating the second location hole 42, then tightening trip bolt 45 and compressing crudefiber crop stalk It is fixed in the first location hole 41, completes the fixation of crudefiber crop stalk;Now, completing fixed crudefiber crop stalk will be longer than tear test Required length, actual tear length is the distance between the first location hole 41 and the second location hole 42.Slide rail 3 is slided into slide unit In 2 sliding groove, by the bast-fibre of a part of tear in advance by being clamped in the upper folder of mechanics machine after leading block 10 Head;The power supply of mechanics machine and buncher is opened simultaneously, and mechanics machine upper grip is loaded straight up, and drive tears apart Bast-fibre move straight up, buncher drive slide rail 3 with crudefiber crop stalk thereon to bast-fibre tear it is anti- Direction is moved, and by setting buncher and test machine for mechanism during tear, makes speed that upper grip moves straight up etc. In the gliding cable structure of slide rail 3, so as to the tear point that ensure that bast-fibre is fixed on same position;Now bast-fibre and slide rail Angle between 3 is angle of tear.By the length for adjusting adjustable pole 6, thus it is possible to vary inclination of the slide unit 2 relative to base 1 Angle, so as to realize adjusting the crudefiber crop stalk tear angle being fixed on slide rail 3.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation Example.To those of ordinary skill in the art, the improvement and change resulting in the case where the technology of the present invention concept thereof is not departed from Change and also should be regarded as protection scope of the present invention.

Claims (10)

1. a kind of bast-fibre multi-angle tear test fixture, it is characterised in that:Including base(1), slide unit(2)And slide rail(3), The slide unit(2)Base is arranged on by angle adjusting mechanism(1)On, the slide rail(3)It is slidedly arranged on slide unit(2)On, the cunning Rail(3)On fixation kit for fixing crudefiber crop stalk is installed(4), the test fixture is also including for ordering about slide rail(3) The slip drive component of slip.
2. bast-fibre multi-angle tear test fixture according to claim 1, it is characterised in that:The fixation kit (4)Including the first location hole that crudefiber crop stalk can be supplied to pass through(41)With the second location hole(42), first location hole(41)With Second location hole(42)Along slide rail(3)Glide direction arranged for interval, the fixation kit(4)Also include crudefiber crop stalk being fixed In the first location hole(41)In or unclamp crudefiber crop stalk adjustable fixture.
3. bast-fibre multi-angle tear test fixture according to claim 2, it is characterised in that:The slide rail(3)If There is the containing groove for housing crudefiber crop stalk(31).
4. bast-fibre multi-angle tear test fixture according to claim 3, it is characterised in that:The slide rail(3)On It is connected with the first fixed block(43)With the second fixed block(44), first location hole(41)Located at first fixed block(43) On, the adjustable fixture is that screw thread cooperation is installed on the first fixed block(43)On trip bolt(45), described second fixes Block(44)It is across containing groove(31)Openend, second fixed block(44)Groove is provided with, the groove is recessed with accommodating Groove(31)Combination constitutes second location hole(42);Second fixed block(44)Or slide rail(3)It is provided with for fiber crops Class stalk inserts the second location hole(42)The positioning element that one end is positioned.
5. bast-fibre multi-angle tear test fixture according to claim 1, it is characterised in that:The angular adjustment machine Structure includes fixed pole(5)With adjustable pole(6), the fixed pole(5)Lower end be fixed in base(1)On, the fixation Pole(5)Upper end and slide rail(3)It is hinged, the adjustable pole(6)Including sleeve(61)Sleeve is located at slip cap(61)In Slide bar(62), the sleeve(61)It is fixed in base(1)On, the slide rail(3)It is provided with chute(32), the slide bar(62) By being slidedly arranged on the chute(32)In articulated elements and the chute(32)It is connected, the slide bar(62)With sleeve(61)Between It is provided with for adjusting fixed slip bar(62)The adjusting part of sliding position.
6. bast-fibre multi-angle tear test fixture according to claim 5, it is characterised in that:The adjusting part bag Include latch(63), located at sleeve(61)First jack on barrel(64)With located at slide bar(62)On some second jacks (65), some second jacks(65)Along slide bar(62)Arranged for interval, the latch(63)It is inserted in first jack(64)With Any one second jack(65)In.
7. bast-fibre multi-angle tear test fixture according to claim 1, it is characterised in that:The slip driving group Part includes being arranged on slide rail(3)On tooth bar(7), installed in slide unit(2)On rotary drive(8)And and rotary drive (8)The connected gear of drive end(9), the gear(9)With tooth bar(7)Engagement.
8. bast-fibre multi-angle tear test fixture according to any one of claim 1 to 7, it is characterised in that:Institute State slide unit(2)It is provided with the leading block for guiding bast-fibre to tear direction(10), the leading block(10)By position Adjusting part is moved with can be along slide unit(2)The mode of direction regulation displacement is arranged on slide rail(3)On, the displacement adjusting part includes It is fixedly arranged on slide rail(3)On two mounting seats, each mounting seat is provided with along slide unit(2)The slip hole of glide direction arrangement(20), institute State leading block(10)Rotating shaft(30)Two ends are slidedly arranged on two slip holes of mounting seat respectively(20)In, the rotating shaft(30)With Slip hole(20)Between have hinder rotating shaft(30)The frictional force of slip.
9. bast-fibre multi-angle tear test fixture according to any one of claim 1 to 7, it is characterised in that:Institute State base(1)Including base plate(11)Be fixed in base plate(11)On connecting cylinder(12), the connecting cylinder(12)On offer and pass through Wear connecting cylinder(12)The through hole of opposite sides barrel(121).
10. bast-fibre multi-angle tear test fixture carries out the test method of tear test described in a kind of use claim 1, It is characterized in that:Comprise the following steps:
(A)By the base of bast-fibre multi-angle tear test fixture(1)On the objective table of test machine for mechanism, by solid Determine component(4)Crudefiber crop stalk is fixed on slide rail(3)On, then the bast-fibre of a part for crudefiber crop stalk tear in advance is clamped On the upper grip of mechanics machine, slide rail is regulated finally by angle adjusting mechanism(3)Glide direction and base(1)Folder Angle is to testing set angle;
(B)Start mechanics machine and rotary drive assembly, the upper grip of mechanics machine is moved straight up and loaded While, rotary drive assembly orders about slide rail(3)Moved to the opposite direction that bast-fibre tears with crudefiber crop stalk, and upper grip The speed moved straight up is equal to slide rail(3)Gliding cable structure.
CN201710231088.1A 2017-04-11 2017-04-11 Multi-angle tearing test fixture and method for hemp fibers Active CN106885730B (en)

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CN108593547A (en) * 2018-06-21 2018-09-28 宿松县恒鼎服饰有限公司 A kind of multifunctional dress quality detection device
CN111238959A (en) * 2020-02-27 2020-06-05 黄山学院 Bending property testing device of material
RU2780433C1 (en) * 2021-10-27 2022-09-23 Федеральное государственное бюджетное образовательное учреждение высшего образования "Костромская государственная сельскохозяйственная академия" Method for determining the breaking load of a bast fiber under uniaxial tension

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