CN115326185B - High-precision quality measurement system - Google Patents
High-precision quality measurement system Download PDFInfo
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- CN115326185B CN115326185B CN202211000467.7A CN202211000467A CN115326185B CN 115326185 B CN115326185 B CN 115326185B CN 202211000467 A CN202211000467 A CN 202211000467A CN 115326185 B CN115326185 B CN 115326185B
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- 238000005259 measurement Methods 0.000 title claims abstract description 26
- 238000013016 damping Methods 0.000 claims abstract description 91
- 239000000725 suspension Substances 0.000 claims abstract description 18
- 238000012360 testing method Methods 0.000 claims abstract description 17
- 230000005291 magnetic effect Effects 0.000 claims abstract description 14
- 230000035939 shock Effects 0.000 claims description 49
- 238000007667 floating Methods 0.000 claims description 33
- 238000010521 absorption reaction Methods 0.000 claims description 12
- 229910000859 α-Fe Inorganic materials 0.000 claims description 8
- 239000004744 fabric Substances 0.000 claims description 7
- 239000003302 ferromagnetic material Substances 0.000 claims description 5
- 230000035699 permeability Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
- G01G21/02—Arrangements of bearings
- G01G21/10—Floating suspensions; Arrangements of shock absorbers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
- G01G21/23—Support or suspension of weighing platforms
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
- G01G21/28—Frames, Housings
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Magnetic Variables (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a high-precision quality measurement system, which relates to the technical field of quality measurement and comprises a quality test table, a damping device, a suspension device, a shielding device and a measuring device, wherein the damping device is arranged on the quality test table, the damping device is connected with the shielding device through the suspension device, and the measuring device is fixedly arranged in the shielding device. According to the invention, by designing the damping device and the suspension device and utilizing the damping principle and the magnetic suspension principle, the vibration transmitted to the measuring device from the outside is effectively reduced.
Description
Technical Field
The invention relates to the technical field of quality measurement, in particular to a high-precision quality measurement system.
Background
Weight is a measure of the amount of weight that an object is subjected to, and is different from mass to mass in newtons. Which is a basic attribute of an object. Under the force of gravity, the weight of a mass of 1 kg of substance was 9.8 newton.
Due to the rapid development of industrial technology, the requirement on the measurement precision of a precision instrument is higher and higher, and the traditional measuring instrument has more disadvantages in measurement precision, speed, stability and the like.
Taking a mass measuring instrument as an example, existing high-precision instruments for mass measurement are required to be placed in a specific test room, and in order to avoid the influence of surrounding vibration on the measurement of the mass measuring instrument, no vibration can exist in the range of several kilometers of the test room, so that a large amount of space is required to occupy by using the weight measuring instrument of the type, and the pressure for configuring the weight measuring instrument is large in a city with a huge number of people.
In order to overcome the above-mentioned drawbacks, those skilled in the art have innovated researches in an effort to create a high-precision quality measurement system.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides a high-precision quality measurement system, a damping device is designed, and the energy of the damping device is mutually counteracted by utilizing the interference of vibration waves, so that the purpose of damping is achieved, and the occupied area of measurement equipment is reduced.
In order to solve the technical problems, the invention adopts a technical scheme that: the high-precision mass measurement system comprises a mass test table, a damping device, a suspension device, a shielding device and a measurement device, wherein the damping device is arranged on the mass test table, the damping device is connected with the shielding device through the suspension device, and the measurement device is fixedly arranged in the shielding device;
the damping device comprises damping units, wherein a plurality of damping plates are formed by arranging the damping units in an array manner, the damping plates are provided with an even number, the axes of the damping plates are on the same straight line, a central pipe and two damping pipes are arranged in each damping unit, the damping pipes are symmetrical with respect to the axes of the central pipe, the two damping pipes in the same damping unit are connected with the central pipe, the area of the cross section of each damping pipe is gradually reduced from the head part to the tail part, an arc part is arranged in each damping pipe, the circumference of the arc part in the damping plate is the same as that of the arc part in the damping plate, the damping plate at the lowest layer is connected with the test table surface, the damping plate at the uppermost layer is connected with the suspension device, damping oil is filled in the damping pipes, and the damping units are in a vacuum environment; the external vibration propagates in the vibration absorption unit in the form of vibration waves, and the vibration waves in the central tube and the vibration waves in the vibration absorption tube interfere with each other so that the energy of the vibration waves is counteracted with each other, thereby achieving the purpose of vibration absorption.
The suspension device comprises an upper floating body and a lower floating body, wherein a plurality of electromagnets are fixedly arranged in the lower floating body, the upper floating body is a permanent magnet, and a shielding device is fixedly arranged above the upper floating body;
the measuring device is a high-precision quality measuring instrument.
Further, the shielding device comprises a frame, shielding plates and shielding curtains, wherein the frame is a cubic frame, the shielding plates are fixedly installed on 5 surfaces of the frame, the shielding curtains are installed on the surfaces of the frame, which are provided with the shielding plates, and the measuring device is surrounded by the shielding device made of ferromagnetic materials with high magnetic permeability, so that the purpose of electromagnetic shielding is achieved, the measuring device in the shielding device is prevented from being influenced by an external magnetic field, and the measuring accuracy is reduced.
Further, the shielding curtain comprises two rod bodies, one rod body is fixedly arranged at the top of the frame, the other rod body is in sliding connection with the frame, a groove capable of accommodating the rod bodies is formed in the bottom of the frame, the two rod bodies are connected through a curtain fabric, the curtain fabric is composed of a plurality of sections of shielding belts, and the two shielding belts are connected in a rotating mode. By arranging the shielding curtain, the shielding curtain is opened when the test is needed, and the object to be tested is placed in the shielding device.
Further, the frame, the shield plate, and the shield tape are made of a ferromagnetic material having high magnetic permeability.
Further, the electromagnets are uniformly distributed on the surface of the lower floating body in a ring shape, ferrite is fixedly arranged on the periphery of the electromagnets, and the permanent magnets attract the electromagnets and the ferrite closely, and repel the electromagnets in the middle, so that a force for jacking up the upper floating body is generated. The shielding cover is suspended above the damping device by utilizing the principle that the same-name magnetic poles repel each other.
Further, the number of electromagnets is 4, the homonymous ends of a group of electromagnets which are opposite are connected, a plurality of Hall sensors are further installed on the surface of the lower floating body, the Hall sensors are linear Hall sensors, the Hall sensors are connected with an operational amplifier, the operational amplifier is connected with the electromagnets, and the offset of the upper floating body is detected through the Hall sensors.
Further, the calculation formula of the perimeter of the arc-shaped part is c=k N 2 (2A+1), wherein C is circumference, A is fixed coefficient, K N The difference between the total length of the shock tube and the length of the central tube is an integral multiple of half the wavelength of the shock wave, so that the shock wave in the shock tube and the shock wave in the central tube interfere with each other.
Further, two adjacent shock absorbing plates are connected through shock absorbing pads, and each shock absorbing pad consists of a plurality of inflatable air bags.
The beneficial effects of the invention are as follows:
the system is provided with the shock absorbing plates, the shock absorbing units in the shock absorbing plates can enable shock waves generated by vibration to interfere and offset in the shock absorbing plates, the shock absorbing units in each layer of shock absorbing plates can reduce and absorb shock waves of a specific wave band, and the shock absorbing plates are overlapped to effectively absorb shock waves of a plurality of wave bands, so that the shock absorbing effect is effectively achieved;
the system is provided with the suspension mechanism, the upper floating body is suspended on the lower floating body by utilizing the principle that like magnetic poles repel, meanwhile, electromagnets in the lower floating body are distributed in a ring shape, the upper floating body is prevented from being deviated by utilizing the Hall sensor to be monitored in real time, and the shielding device above the damping mechanism is not in direct contact with the damping device, so that the transmission of vibration is blocked.
The system is provided with the shielding device, and the measuring device is surrounded by the shielding device made of the ferromagnetic material with high magnetic conductivity, so that the electromagnetic shielding purpose is achieved, the measuring device in the shielding device is prevented from being influenced by an external magnetic field, and the measuring accuracy is reduced.
The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the present invention, as it is embodied in the following description, with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the shock absorbing device of the present invention;
FIG. 3 is a schematic view of the structure of the shock absorbing unit of the present invention;
FIG. 4 is a schematic diagram of shock wave interference in accordance with the present invention;
FIG. 5 is a schematic view of the structure of the levitation device of the present invention;
FIG. 6 is a schematic view of the structure of the shielding device of the present invention;
fig. 7 is a cross-sectional view of the shielding device of the present invention;
the parts in the drawings are marked as follows:
1 mass test bench, 2 damping device, 21 shock attenuation board, 22, damping unit, 221, shock attenuation pipe, 222 center tube, 23 shock pad, 3 suspension device, 31 upper floating body, 311 permanent magnet, 32 lower floating body, 321 electro-magnet, 322 ferrite, 323 hall sensor, 4 shielding device, 41 frame, 42 shielding board, 43 shielding curtain, 431 body of rod, 432 curtain cloth, 5 measuring device, 61 shock wave in the shock attenuation pipe, 62 shock wave of center tube.
Detailed Description
The following specific embodiments of the invention are described in order to provide those skilled in the art with an understanding of the present disclosure. The invention may be embodied in other different forms, i.e., modified and changed without departing from the scope of the invention.
Examples: the high-precision quality measurement system comprises a quality test table 1, a damping device 2, a suspension device 3, a shielding device 4 and a measurement device 5, wherein the damping device is arranged on the quality test table, the damping device is connected with the shielding device through the suspension device, and the measurement device is fixedly arranged in the shielding device;
as shown in fig. 2 and 3, the damping device includes a damping unit 22, a plurality of damping units are arranged in a whole row to form a damping plate 21, the damping units are respectively arrayed in the X-axis direction and the Y-axis direction, the damping plates have an even number, the axes of the damping plates are on the same straight line, two adjacent damping plates are connected through a damping pad 23, the damping pad is composed of a plurality of inflatable air bags, and inert gas is filled in the inflatable air bags during use.
Each damping unit is internally provided with a central tube 222 and two damping tubes 221, the damping tubes are symmetrical about the axis of the central tube, one end of each damping tube faces upwards, the other end of each damping tube faces downwards, and vibration waves generated by vibration enter the damping tube from one end of the damping tube and leave from the other end of the damping tube. Two ends of two shock absorption pipes in the same shock absorption unit are connected with the central pipe, the area of the cross section of each shock absorption pipe gradually decreases from the head to the tail, each shock absorption pipe is internally provided with an arc-shaped part, the circumference of the arc-shaped part is the same as that of the arc-shaped part in the shock absorption plate, and the calculation formula of the circumference of the arc-shaped part is C=K N 2 (2a+1), the length of the central tube is calculated as l=k N B
Wherein C is the circumference, A and B are fixed coefficients, K N For the wavelength of shock wave, K 1 To K N For the wavelength value of continuous vibration wave, N is the number of the vibration damping plate corresponding to the vibration damping tube, the number of the vibration damping plate at the lowest layer is 1, the numbers of the vibration damping plates are increased from bottom to top, and each layer of vibration damping plate corresponds to one K N Value, L i length of the center tube.
As shown in fig. 4, the difference between the circumference of the shock absorbing tube and the length of the central tube is an integer multiple of half wavelength, so that when the shock wave is transmitted from one end of the shock absorbing unit to the other end, the shock wave 62 in the central tube is in a trough, the shock wave 62 in the shock absorbing tube is in a peak, and the two are overlapped by interference, thereby reducing the energy of the shock wave,
the damping plate at the lowest layer is connected with the test table top, the damping plate at the highest layer is connected with the suspension device, damping oil is filled in the damping tube, and a vacuum environment is arranged in the damping unit; each layer of shock absorbing plate can absorb shock waves with a certain wavelength, and a plurality of shock absorbing plates are stacked together and can absorb shock waves with a plurality of wavelengths, so that the purpose of shock absorption is achieved.
As shown in fig. 5, the suspension device comprises an upper floating body 31 and a lower floating body 32, wherein a plurality of electromagnets 321 are fixedly arranged in the lower floating body, the upper floating body is a permanent magnet 311, and a shielding device is fixedly arranged above the upper floating body; the upper floating body is suspended above the lower floating body, so that the shielding device is prevented from being in direct contact with the damping device.
The electromagnets are uniformly distributed on the surface of the lower floating body in an annular shape, ferrite 322 is fixedly arranged on the periphery of the electromagnets, repulsive force can be increased by the ferrite, the permanent magnets attract the electromagnets and the ferrite closely, and the permanent magnets repel the electromagnets in the middle, so that a force for jacking the upper floating body is generated, and after the electromagnets are electrified, the permanent magnets are suspended in the center of an annular ring formed by the electromagnets.
The quantity of electro-magnet is 4, and the homonymous end of a set of electro-magnet of relative links to each other, a plurality of hall sensor 323 are still installed to the surface of lower body, hall sensor is linear hall sensor, and hall sensor is used for detecting the skew of upper body, hall sensor is connected with operational amplifier, operational amplifier is connected with the electro-magnet, after hall sensor detects the skew center of upper body, hall sensor carries voltage signal to operational amplifier, and operational amplifier amplifies the back with voltage signal, conveys voltage signal to the driving coil of electro-magnet to change the magnetic force of electro-magnet, make the permanent magnet return to the center.
As shown in fig. 6 and 7, the shielding device includes a frame 41, a shielding plate 42 and a shielding curtain 43, the frame is a cubic frame, the shielding plates are fixedly installed on 5 surfaces of the frame, the shielding curtain is installed on the surface of the frame, on which the shielding plates are installed, the frame, the shielding plates and the shielding curtain form a sealed protection cover outside the measuring device, so that an external magnetic field is shielded, influence of the suspending device and the external magnetic field on the measuring device inside the shielding device is avoided, and accuracy of the measuring device is reduced.
The shielding curtain comprises two rod bodies 431, one rod body is fixedly arranged at the top of the frame, the other rod body is in sliding connection with the frame, a groove capable of accommodating the rod bodies is formed in the bottom of the frame, the two rod bodies are connected through a curtain fabric 432, the curtain fabric is composed of a plurality of sections of shielding belts, and the two shielding belts are connected in a rotating mode. During testing, the lower rod body slides upwards, a test object is placed on the measuring device, then the lower rod body is loosened, the rod body falls freely and enters the groove, and therefore the whole device is sealed.
The frame, the shield plate, and the shield tape are made of a ferromagnetic material having high magnetic permeability.
The measuring device is a high-precision quality measuring instrument.
The working process and working principle of the invention are as follows:
when the device is used, the electromagnet is electrified, a magnetic field is generated after the electromagnet is electrified, so that the permanent magnet and the shielding cover are suspended, the rod body is moved, the shielding curtain is opened, an object to be measured is placed into the high-precision quality measuring instrument in the shielding device, the shielding curtain is closed, and then the quality of the object is tested.
The foregoing description is not intended to limit the scope of the invention, but rather is merely exemplary of the invention, and all equivalent structures made using the teachings of this invention and the accompanying drawings, or direct or indirect application in other related arts, are equally included in the scope of this invention.
Claims (7)
1. A high accuracy quality measurement system, characterized by: the device comprises a quality test table, a damping device, a suspension device, a shielding device and a measuring device, wherein the damping device is arranged on the quality test table, the damping device is connected with the shielding device through the suspension device, and the measuring device is fixedly arranged in the shielding device;
the damping device comprises damping units, wherein a plurality of damping plates are formed by arranging the damping units in an array manner, the damping plates are provided with an even number, the axes of the damping plates are on the same straight line, a central pipe and two damping pipes are arranged in each damping unit, the damping pipes are symmetrical with respect to the axes of the central pipe, the two damping pipes in the same damping unit are connected with the central pipe, the area of the cross section of each damping pipe is gradually reduced from the head part to the tail part, an arc part is arranged in each damping pipe, the circumference of the arc part in the damping plate is the same as that of the arc part in the damping plate, the damping plate at the lowest layer is connected with the mass test bench, the damping plate at the uppermost layer is connected with the suspension device, damping oil is filled in the damping pipes, and the damping units are in a vacuum environment;
the calculation formula of the perimeter of the arc-shaped part is C=KN/2 (2A+1), wherein C is the perimeter, A is a fixed coefficient, and KN is the wavelength of vibration waves;
the suspension device comprises an upper floating body and a lower floating body, wherein a plurality of electromagnets are fixedly arranged in the lower floating body, the upper floating body is a permanent magnet, and a shielding device is fixedly arranged above the upper floating body;
the measuring device is a high-precision quality measuring instrument.
2. A high accuracy mass measurement system as claimed in claim 1, wherein: the shielding device comprises a frame, shielding plates and shielding curtains, wherein the frame is a cubic frame, the shielding plates are fixedly installed on 5 surfaces of the frame, and the shielding curtains are installed on the surfaces of the frame, on which the shielding plates are installed.
3. A high precision mass measurement system as defined in claim 2, wherein: the shielding curtain comprises two rod bodies, one rod body is fixedly arranged at the top of the frame, the other rod body is in sliding connection with the frame, a groove capable of accommodating the rod bodies is formed in the bottom of the frame, the two rod bodies are connected through a curtain fabric, the curtain fabric is composed of a plurality of sections of shielding belts, and the two shielding belts are connected in a rotating mode.
4. A high accuracy mass measurement system as claimed in claim 3, wherein: the frame, the shield plate, and the shield tape are made of a ferromagnetic material having high magnetic permeability.
5. A high accuracy mass measurement system as claimed in claim 1, wherein: the electromagnets are uniformly distributed on the surface of the lower floating body in an annular shape, ferrite is fixedly arranged on the periphery of the electromagnets, the permanent magnets attract the electromagnets and the ferrite closely, and the permanent magnets repel the electromagnets in the middle, so that a force for jacking the upper floating body is generated.
6. A high accuracy mass measurement system as defined in claim 5, wherein: the number of electromagnets is 4, the homonymous ends of a group of electromagnets which are opposite are connected, a plurality of Hall sensors are further installed on the surface of the lower floating body, the Hall sensors are linear Hall sensors, the Hall sensors are connected with an operational amplifier, the operational amplifier is connected with the electromagnets, and the offset of the upper floating body is detected through the Hall sensors.
7. A high accuracy mass measurement system as claimed in claim 1, wherein: two adjacent shock absorption plates are connected through shock absorption pads, and each shock absorption pad consists of a plurality of inflatable air bags.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211000467.7A CN115326185B (en) | 2022-08-19 | 2022-08-19 | High-precision quality measurement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211000467.7A CN115326185B (en) | 2022-08-19 | 2022-08-19 | High-precision quality measurement system |
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| Publication Number | Publication Date |
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| CN115326185A CN115326185A (en) | 2022-11-11 |
| CN115326185B true CN115326185B (en) | 2023-04-28 |
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| CN202211000467.7A Active CN115326185B (en) | 2022-08-19 | 2022-08-19 | High-precision quality measurement system |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105553337B (en) * | 2016-02-02 | 2017-10-20 | 杨欢 | A kind of magnetic suspension system |
| CN207515888U (en) * | 2017-09-30 | 2018-06-19 | 天津九鼎医学生物工程有限公司 | A kind of mass measurer |
| CN111780848A (en) * | 2020-06-30 | 2020-10-16 | 山东快刻环保科技有限公司 | Industrial weighing mechanism with efficient damping function |
| CN214200355U (en) * | 2020-10-14 | 2021-09-14 | 上海焱日科技有限公司 | Electronic scale with anti-interference function |
| CN215010081U (en) * | 2021-07-20 | 2021-12-03 | 东莞市弘名电子科技有限公司 | Magnetic suspension device |
| CN113899432B (en) * | 2021-09-30 | 2023-11-21 | 武汉大学 | Magnetic suspension balance and mass measurement method |
| CN114199354B (en) * | 2021-11-29 | 2024-05-10 | 江苏大学 | Self-adaptive magnetic suspension electronic balance and weighing method thereof |
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