CN102507384B - Controllable microcosmic dynamic-observation device for magnetorheological material in magnetic field - Google Patents
Controllable microcosmic dynamic-observation device for magnetorheological material in magnetic field Download PDFInfo
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- CN102507384B CN102507384B CN 201110309991 CN201110309991A CN102507384B CN 102507384 B CN102507384 B CN 102507384B CN 201110309991 CN201110309991 CN 201110309991 CN 201110309991 A CN201110309991 A CN 201110309991A CN 102507384 B CN102507384 B CN 102507384B
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Abstract
The invention discloses a controllable microcosmic dynamic-observation device of a magnetorheological material in a magnetic field, comprising an observation platform which is provided with a light source slit, wherein a light source is arranged inside the light source slit; an observation plate is fixed above the light source slit; the observation plate is made of transparent glass material; a cuboid shear plate mounting groove is arranged at the position on the upper surface of the observation plate, opposite to an observation slit; a first shear plate, a second shear plate and a drag board are arranged inside the shear plate mounting groove; magnet mounting grooves are symmetrically arranged at two sides of the shear plate mounting groove on the observation pate; a servo motor and a belt are also provided; the belt is connected to two ends of the drag board, simultaneously, the belt is also connected with the servo motor and driven by the servo motor to rotate; a microscope is also arranged on the observation platform, and a lens of the microscope is arranged opposite to the observation slit above the light source slit. According to the device, change situation of the magnetorheological material can be observed when the magnetic field is added and changed or in microcosmic shear yielding, and simultaneously, the device has the advantages of low cost, convenience and rapidness in implementation and the like.
Description
Technical field
The present invention relates to the magnetorheological materials technology, especially relate to a kind of device that magnetorheological materials is dynamic observed intuitively in shear history.
Background technology
Magnetorheological materials mainly refers to magnetic flow liquid, is a kind of controlled fluent material, is one comparatively active in the intellectual material research.The magnetic flow liquid material is by high magnetic permeability, the small soft magnetic particles of low magnetic hysteresis and the suspended matter that non-magnetic liquid mixes.This suspended matter presents low viscous Newtonian fluid characteristic under zero magnetic field condition; And under strong magnetic field action, then present the Binghan bulk properties of high viscosity, lazy flow.Have stable corresponding relation because the rheology of magnetic flow liquid under magnetic field effect is shear yield strength and the magnetic field intensity after moment, reversible and its rheology, so be a kind of intellectual material of of many uses, function admirable.
Magnetic flow liquid is the emphasis of studying in the functional material system always, and a lot of scholars have obtained a lot of achievements in theoretical field.In these existing researchs, mostly concentrate on the shearing force size of research magnetorheological materials under different magnetic field or different temperatures situation, the performance parameter of how to test magnetic flow liquid.Its testing apparatus that adopts all has complex structure, defective with high costs.
Applying and popularizing along with magnetorheological materials, more and more researchers begins interested in it, but the researcher for new contact magnetorheological materials, can not demonstrate at present the equipment of magnetorheological materials performance change dynamic process intuitively, be unfavorable for that the researcher becomes interested to magnetorheological materials rapidly, if adopt existing baroque magnetorheological materials performance test apparatus to use to the beginner, the one, with high costs, the 2nd, be unfavorable for that the beginner operates.
So the inventor considers, dynamic observe device if can design a kind of magnetorheological materials with low cost, can observe and verify the performance of magnetorheological materials intuitively, then can promptly promote the beginner to the interest of magnetorheological materials, be conducive to the research and development of magnetorheological materials.
Summary of the invention
At above-mentioned the deficiencies in the prior art, the technical problem to be solved in the present invention is: a kind of controlled microscopic behavior observation device in magnetorheological materials magnetic field that can observe and verify the performance of magnetorheological materials intuitively is provided, this device can observe magnetorheological materials when externally-applied magnetic field and the situation of change during shear yielding intuitively, can observe that shearing force that magnetorheological materials bears changes and changes of magnetic field between relation, possess with low costly simultaneously, implement advantages such as convenient.
In order to solve the problems of the technologies described above, adopted following technical scheme among the present invention:
The controlled microscopic behavior observation device in a kind of magnetorheological materials magnetic field, it is characterized in that, comprise a measuring platform, have the light source seam on the measuring platform, be provided with the upwards light source of emission in the light source seam, fixedly there is observation board the light source side of sewing on, described observation board adopts transparent glass material to make, the observation board upper surface has the shear plate mounting groove of rectangular parallelepiped over against the place of observation seam, be provided with first shear plate and second shear plate of irony in the shear plate mounting groove, one side of first shear plate is fixed on a side of shear plate mounting groove, opposite side has been mounted slidably described second shear plate, second shear plate is set with a dragging plate away from a side of first shear plate, it is smooth flat away from a side of second shear plate that dragging plate and observation board adopt identical material and dragging plate, the shear plate mounting groove is similarly smooth flat away from the side of first shear plate and fits with the smooth flat of dragging plate, leave the observation gap of 1mm between described first shear plate and second shear plate, the observation gap arranges over against the light source seam, and the side length of described mounting groove is greater than the length of second shear plate and dragging plate; The symmetria bilateralis that is positioned at the shear plate mounting groove on the described observation board is provided with the magnet mounting groove, is installed with many to magnet in two magnet mounting grooves symmetrically; Also be provided with servomotor and belt, belt is connected to the two ends of described dragging plate, simultaneously belt is connected with servomotor and leans on its driven rotary, the place, two ends that described belt is positioned at dragging plate respectively has a flex point, the measuring platform at flex point place is provided with for the pulley for belt steering, belt and dragging plate between two pulleys are located along the same line, and also are provided with microscope on the described measuring platform, and described microscopical camera lens arranges over against the observation gap of the described light source side of sewing on.
When this device uses, earlier with magnetorheological materials, join such as magnetic flow liquid in the observation gap of first shear plate and second shear plate, the magnet of in the magnet mounting groove, packing into symmetrically then, can observe and record the situation of its changes in material by microscope, such as the shape of the some chain structures that form in the magnetorheological materials, direction etc.Start the servomotor output torque then, when the servomotor output torque can be greater than the shear yielding power of magnetorheological materials, servomotor can drive belt and rotate, can observe and record the process of the chain structure fracture of magnetorheological materials this moment by microscope, quantity by increase and decrease magnet can realize discrete control to magnetic field, adjust the servomotor output torque more accordingly, the situation that the shear yield strength that can show and observe magnetorheological materials intuitively changes with the increase and decrease in magnetic field.
This device can observe the dynamic change situation of magnetorheological materials intuitively, She Ji structure can more completely be converted into shearing force with the moment of servomotor output simultaneously, bear relation between shearing force situation of change and the complementary field size so can demonstrate out magnetic flow liquid well, and can observe this change procedure intuitively, so easier observer cognitive duty and the dynamic changing process to magnetic flow liquid scrupulously of allowing.Simultaneously this device adopts simple material and member formation, and the microscope of employing also is the laboratory common instrument, can assemble to obtain temporarily, so it is cheap to have an implementation cost, is convenient to the advantage of laboratory applications.
Description of drawings
Fig. 1 is apparatus structure synoptic diagram of the present invention.
Fig. 2 is from overlooking on the direction synoptic diagram after the structure amplification on the independent observation board among Fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments structure of the present invention is described in further detail.
During concrete enforcement, as depicted in figs. 1 and 2, the controlled microscopic behavior observation device in a kind of magnetorheological materials magnetic field, comprise a measuring platform 1, have light source seam 2 on the measuring platform 1, be provided with the upwards light source 3 of emission in the light source seam 2, light source stitches 2 upper fixed observation board 4, described observation board 4 adopts transparent glass material to make, observation board 4 upper surfaces have the shear plate mounting groove of rectangular parallelepiped over against the place of observation seam 2, be provided with first shear plate 5 and second shear plate 6 of irony in the shear plate mounting groove, one side of first shear plate 5 is fixed on a side of shear plate mounting groove, opposite side has been mounted slidably described second shear plate 6, second shear plate 6 is set with a dragging plate 7 away from a side of first shear plate 5, it is smooth flat away from a side of second shear plate 6 that dragging plate 7 and observation board 4 adopts identical materials and dragging plate 7, the shear plate mounting groove is similarly smooth flat away from the side of first shear plate 5 and fits with the smooth flat of dragging plate 7, leave the observation gap of 1mm between described first shear plate 5 and second shear plate 6, the observation gap arranges over against light source seam 2, and the side length of described mounting groove is greater than the length of second shear plate 6 and dragging plate 7; The symmetria bilateralis that is positioned at the shear plate mounting groove on the described observation board 4 is provided with the magnet mounting groove, is installed with many to magnet 8 in two magnet mounting grooves symmetrically; Also be provided with servomotor 9 and belt 10, belt 10 is connected to the two ends of described dragging plate 7, simultaneously belt 10 is connected with servomotor 9 and leans on its driven rotary, the place, two ends that described belt 10 is positioned at dragging plate 7 respectively has a flex point, the measuring platform 1 at flex point place is provided with for the pulley 11 for belt steering, belt and dragging plate between two pulleys 11 are located along the same line, also be provided with microscope 12 on the described measuring platform, the camera lens of described microscope 12 arranges over against the observation gap of the described light source side of sewing on.
During concrete enforcement, described light source preferably adopts the illuminator for microscopic, and described microscope belongs to prior art, and the preferred microscope that has automatic camera and camera function that adopts is convenient to record situation of change.During concrete enforcement; described observation board also can adopt other transparent material; should belong to equivalents and still fall in the protection domain of the present invention, described belt also can adopt other drive mechanisms such as driving chain simultaneously, also should be considered as equivalent variations and still falls into protection domain of the present invention.In addition, when specifically implementing, can lean on the cooperation of a gear and tooth bar to realize being connected and transmission between servomotor and the belt, only need be fixed on gear on the motor shaft, and tooth bar is fixed on the belt, and both are meshing with each other and get final product then; Simultaneously, also can be that the belt solderless wrapped connection is rotated at runner, again a runner and motor are directly linked to each other as starting runner, also can realize motor to the drive of belt, direction of motion and the speed of second shear plate is controlled in convenient control of rotating by motor.In addition, when specifically implementing, observation platform and light source that described measuring platform and light source just adopt microscope to carry also should belong to and be equal to infringement and fall into protection domain of the present invention.Simultaneously, can be equipped with digital collection equipment on the microscope during enforcement, directly link to each other with computing machine by USB interface, can the real time record observed result, with convenient the actual performance of magnetorheological materials on microscopical structure carried out quantitative test.
Claims (1)
1. controlled microscopic behavior observation device in magnetorheological materials magnetic field, it is characterized in that, comprise a measuring platform, have the light source seam on the measuring platform, be provided with the upwards light source of emission in the light source seam, fixedly there is observation board the light source side of sewing on, described observation board adopts transparent glass material to make, the observation board upper surface has the shear plate mounting groove of rectangular parallelepiped over against the place of observation seam, be provided with first shear plate and second shear plate of irony in the shear plate mounting groove, one side of first shear plate is fixed on a side of shear plate mounting groove, opposite side has been mounted slidably described second shear plate, second shear plate is set with a dragging plate away from a side of first shear plate, it is smooth flat away from a side of second shear plate that dragging plate and observation board adopt identical material and dragging plate, the shear plate mounting groove is similarly smooth flat away from the side of first shear plate and fits with the smooth flat of dragging plate, leave the observation gap of 1mm between described first shear plate and second shear plate, the observation gap arranges over against the light source seam, and the side length of described shear plate mounting groove is greater than the length of second shear plate and dragging plate; The symmetria bilateralis that is positioned at the shear plate mounting groove on the described observation board is provided with the magnet mounting groove, is installed with many to magnet in two magnet mounting grooves symmetrically; Also be provided with servomotor and belt, belt is connected to the two ends of described dragging plate, simultaneously belt is connected with servomotor and leans on its driven rotary, the place, two ends that described belt is positioned at dragging plate respectively has a flex point, the measuring platform at flex point place is provided with for the pulley for belt steering, belt and dragging plate between two pulleys are located along the same line, and also are provided with microscope on the described measuring platform, and described microscopical camera lens arranges over against the observation gap of the described light source side of sewing on; Quantity by increase and decrease magnet realizes the discrete control to magnetic field, adjusts the servomotor output torque more accordingly, and the shear yield strength of realizing showing intuitively and observe magnetorheological materials changes with the increase and decrease in magnetic field.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110309991 CN102507384B (en) | 2011-10-13 | 2011-10-13 | Controllable microcosmic dynamic-observation device for magnetorheological material in magnetic field |
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| CN 201110309991 CN102507384B (en) | 2011-10-13 | 2011-10-13 | Controllable microcosmic dynamic-observation device for magnetorheological material in magnetic field |
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| CN102507384A CN102507384A (en) | 2012-06-20 |
| CN102507384B true CN102507384B (en) | 2013-07-10 |
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| CN107024414B (en) * | 2017-05-22 | 2023-03-31 | 南京航空航天大学 | Microscopic observation method and device for rheological property of magnetorheological fluid |
| CN113702291A (en) * | 2021-08-31 | 2021-11-26 | 北京交通大学 | Microstructure observation device under magnetic liquid flowing state |
| CN117740681B (en) * | 2024-02-19 | 2024-05-14 | 煤炭科学研究总院有限公司 | Detection device for observing microstructure of magnetic liquid |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201909747U (en) * | 2011-01-27 | 2011-07-27 | 重庆大学 | Heating and temperature detection mechanism for magnetorheological material tester |
| CN102175576A (en) * | 2011-01-27 | 2011-09-07 | 重庆大学 | Horizontal annular slot type test device for magnetorheological material |
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| US20040126874A1 (en) * | 2001-01-18 | 2004-07-01 | Katsuko Sakai | Cone plate type blood or the like compatibility evaluation device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201909747U (en) * | 2011-01-27 | 2011-07-27 | 重庆大学 | Heating and temperature detection mechanism for magnetorheological material tester |
| CN102175576A (en) * | 2011-01-27 | 2011-09-07 | 重庆大学 | Horizontal annular slot type test device for magnetorheological material |
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