CN112697327B - Physical quantity impulse test bench based on magnetic suspension principle - Google Patents
Physical quantity impulse test bench based on magnetic suspension principle Download PDFInfo
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- CN112697327B CN112697327B CN202011486753.XA CN202011486753A CN112697327B CN 112697327 B CN112697327 B CN 112697327B CN 202011486753 A CN202011486753 A CN 202011486753A CN 112697327 B CN112697327 B CN 112697327B
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- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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Abstract
The invention discloses a physical quantity impulse test board based on a magnetic suspension principle, and relates to the technical field of impulse test equipment. According to the invention, the magnetic suspension principle is utilized to test the impulse by utilizing the cooperation between the first magnetic blocks and the second magnetic blocks, the energy loss is smaller, the impulse can be judged according to the displacement length of the floating ball above the assembly plate and the rotation speed of the floating ball, the impulse value is larger when the displacement length of the floating ball above the assembly plate is longer, and when the displacement length of the floating ball above the assembly plate is equal and the rotation speed of the floating ball is higher, the impulse value is larger, the measurement is more sensitive, the top and the side wall of the micro propeller can be clamped, and the safety and the stability of the micro propeller can be effectively enhanced.
Description
Technical Field
The invention relates to the technical field of impulse testing equipment, in particular to a physical quantity impulse testing platform based on a magnetic suspension principle.
Background
Magnetic levitation (EML or EMS) refers to a technique for levitating an object by using magnetic force to overcome gravity. The current suspension technology mainly comprises magnetic suspension, optical suspension, acoustic suspension, air flow suspension, electric suspension, particle beam suspension and the like, wherein the magnetic suspension technology is mature. Physical quantities are one of the most important basic concepts to accurately reflect chemical and physical changes. Physical quantities, which refer to qualitatively distinguishable and quantitatively determinable attributes of a phenomenon, object or substance described in the physics, are expressed as a combination of numbers and units. In classical mechanics, the impulse of the resultant external force to an object is equal to the increment of its momentum (i.e., the last momentum minus the initial momentum), called the theorem of momentum. Momentum is the state quantity and impulse is a process quantity. A constant force impulse refers to the product of this force and its time of action. Impulse represents a physical quantity that contributes to the cumulative effect of a mass point over time, and is responsible for changing the mechanical state of motion of the mass point.
When the impulse of the micro propeller is tested, the existing physical quantity impulse test bench has the advantages that the micro impulse of the micro propeller is small, and the micro impulse duration is short, so that the accuracy of an impulse test result is low.
Disclosure of Invention
The invention aims to provide a physical quantity impulse test bench based on a magnetic suspension principle, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a physical quantity impulse testboard based on magnetic suspension principle, includes the testboard body, testboard body top one side is equipped with the holding frame, testboard body top in holding frame one side is equipped with the assembly plate, the assembly plate top is equipped with the first magnetism piece of a plurality of, the assembly plate top is close to holding frame one end in first magnetism piece top is equipped with the auxiliary frame, the auxiliary frame inboard is equipped with swing joint's floater, the inboard bottom of floater is equipped with the second magnetism piece, first magnetism piece with second magnetism piece magnetism is the same.
Furthermore, the first magnetic blocks are provided with three groups, the distance between every two adjacent first magnetic blocks is equal, the three groups of first magnetic blocks are arranged at the top of the assembly plate in parallel, the distance between every two adjacent groups of first magnetic blocks is equal, the first magnetic blocks arranged in the middle of the two groups are staggered with the other two groups of first magnetic blocks, the two adjacent first magnetic blocks arranged in the middle of the two groups and the other two adjacent first magnetic blocks form a cross structure, the distance between the two adjacent first magnetic blocks forming the cross structure is equal, the second magnetic blocks comprise first supporting discs, second supporting discs are arranged at the bottoms of the first supporting discs, third supporting discs are arranged at the bottoms of the second supporting discs, hemispherical blocks are arranged at the bottoms of the third supporting discs, and the outer diameters of the first supporting discs, the second supporting discs, the third supporting discs and the hemispherical blocks are sequentially reduced, the outer wall of the floating ball is horizontally provided with an annular groove, the outer wall of the floating ball is vertically provided with a baffle plate on the inner side of the annular groove, the cross section of the annular groove is of a circular arc structure, the height of the annular groove is greater than one half of the outer diameter of the floating ball, the height of the annular groove is less than two thirds of the outer diameter of the floating ball, the depth of the annular groove is greater than one third of the outer diameter of the floating ball, the depth of the annular groove is less than one half of the outer diameter of the floating ball, the inner center of the floating ball is provided with a spherical cavity, the outer wall of the annular groove is provided with a plurality of first through grooves, one end of each first through groove is communicated with the spherical cavity, the first through grooves are parallel to the spherical inner channel of the spherical cavity, the auxiliary frame comprises a semi-spherical shell and two supporting seats, the two supporting seats are arranged below the semi-spherical shell, and the top of the supporting seats is provided with a spherical shell supporting plate, arc-shaped inserting strips are symmetrically arranged on two sides of the bottom of the hemispherical shell, and arc-shaped inserting grooves matched with the arc-shaped inserting strips are formed in the top of the spherical shell supporting plate.
Furthermore, the handle is arranged at the top of the hemispherical shell, so that the hemispherical shell can be lifted upwards or pulled upwards by using the handle, and the operation is convenient and fast.
Furthermore, the inner diameter of the spherical cavity is one fourth of the outer diameter of the floating ball, so that the internal space distribution of the spherical cavity is more reasonable, and the stability of the floating ball is ensured.
Furthermore, the baffle outer wall is provided with a second through groove, the second through groove is communicated with the first through groove, so that impulse can pass through the second through groove to enter the baffle, and meanwhile, the impulse can pass through the first through groove to enter the spherical cavity.
Furthermore, the cross section of the baffle coincides with the cross section of the annular groove, so that the outer edge of the baffle coincides with the outer edge of the floating ball, and the stability of the floating ball is further guaranteed.
Furthermore, the two sides of the top of the clamping frame are symmetrically provided with a supporting plate, the top of the supporting plate is vertically provided with a mounting cavity, the mounting cavity is internally provided with a mounting plate in sliding connection, the top of the mounting plate is vertically provided with a rack, the top of the supporting plate is provided with a mounting frame outside the mounting cavity, the inner side of the mounting frame is provided with a slide bar rotatably connected on one side of the rack, the outer wall of the slide bar is sleeved with a gear meshed with the rack, the outer wall of the slide bar is provided with a first clamping plate outside the gear, the bottoms of the two mounting plates are provided with the same bottom plate, the outer wall of the supporting plate is provided with a third through groove matched with the bottom plate, one side of the outer wall of the mounting plate, away from the third through groove, is provided with a plurality of first springs, the bottoms of the first springs are fixedly connected with the inner wall of the supporting plate, and the inner wall of the supporting plate is provided with a plurality of movably connected second clamping plates above the third through groove, the bottom of the second clamping plate is horizontally provided with a second spring, one end of the second spring is fixedly connected with the inner wall of the supporting plate, the outer wall of the second clamping plate is close to one side of the mounting plate and is provided with a trapezoidal block, and the outer wall of the mounting plate is provided with a trapezoidal groove matched with the trapezoidal block.
Furthermore, a fourth through groove matched with the second clamping plate is formed in the outer wall of the supporting plate, and the fourth through groove penetrates through the second clamping plate, so that the second clamping plate can clamp the outer wall of the micro propeller.
Further, the backup pad inner wall be equipped with first spring assorted first mounting groove, the backup pad inner wall be equipped with second spring assorted second mounting groove, first mounting groove provides installation and activity space for first spring, guarantees that first spring can normally compress and kick-backs, and the second mounting groove provides installation and activity space for the second spring, guarantees that the second spring can normally compress and kick-back.
Furthermore, first grip block outer wall one side is equipped with first centre gripping pad, second grip block outer wall one side is equipped with the second centre gripping pad, and the centre gripping effect of first grip block can be strengthened to first centre gripping pad, and clamping stability is better, and the centre gripping effect of second grip block can be strengthened to the second centre gripping pad, and clamping stability is better.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention can form a plurality of different magnetic fields by arranging the test board body, the clamping frame, the assembling plate, the first magnetic block, the auxiliary frame, the floating ball and the second magnetic block, wherein repulsion force is generated between the first magnetic block and the second magnetic block, the second magnetic block is pushed upwards, the first magnetic block continuously distributed in a cross structure can form a plurality of different magnetic fields, so that the stress between the magnetic fields is more uniform, the second magnetic block is shifted from one cross structure to the next cross structure, the impulse quantity required by the magnetic field is the same, the impulse quantity test is more accurate, the second magnetic block forms a gyroscope structure, the stability of the floating ball is better when the floating ball rotates, the second magnetic block of the gyroscope structure is more stable under the action of the magnetic field of the first magnetic block, the micro-impulse quantity propeller sends out micro-impulse quantity, when the micro-impulse quantity impacts on the annular groove, the baffle shields the micro-impulse quantity, the borne by the floating ball is more, and the impulse quantity loss can be reduced, the impulse testing accuracy is ensured, and the micro impulse impacting the surface of the annular groove can enter the spherical cavity on the inner side of the floating ball through the first through groove; the micro impulse is collected in the spherical cavity, when the micro impulse impacts the surface of the annular groove, the floating ball rotates, the micro impulse is continuously pushed and can continuously impact the surface of the annular groove at other positions, the micro impulse enters the spherical cavity from other first through grooves and generates a sealing blocking effect on the micro impulse which previously enters the spherical cavity, the movement time of the micro impulse in the floating ball is prolonged, the micro impulse is enabled to act on the floating ball as much as possible, the loss is reduced, the impulse test is more accurate, the impulse is tested by utilizing the magnetic suspension principle through the cooperation between the first magnetic blocks and the second magnetic blocks, the energy loss is smaller, the impulse can be judged according to the displacement length of the floating ball above the assembly plate and the rotation speed of the floating ball, the longer the displacement length of the floating ball above the assembly plate, the larger the impulse value is, and when the displacement length of the floating ball above the assembly plate is equal, the faster the rotation speed of floater is, then impulse numerical value is bigger, measures more sensitively, can effectively test micro-propeller's little impulse.
2. According to the invention, the supporting plate, the mounting plate, the rack, the gear, the first clamping plate, the second clamping plate, the trapezoid block and the trapezoid groove are arranged, the micro propeller presses the bottom plate downwards, the mounting plate is pulled downwards by the bottom plate, the mounting plate moves downwards in the mounting cavity of the supporting plate, the trapezoid block is pressed downwards by the trapezoid groove and moves outwards, the second clamping plate extends out of the supporting plate, the second spring is compressed to clamp the side wall of the micro propeller, the rack moves downwards along with the mounting plate, when the rack moves downwards, the gear rotates, the gear drives the sliding rod to rotate, the first clamping plate is further driven to rotate, the first clamping plate is turned over from a vertical state to a horizontal state, the top of the micro propeller is clamped, and the safety and the stability of the micro propeller can be effectively enhanced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a top plan view of the present invention as a whole;
FIG. 2 is a side view of the float of the present invention;
FIG. 3 is a top sectional view of the float of the present invention;
FIG. 4 is a side view of the auxiliary frame of the present invention;
FIG. 5 is a side sectional view of the auxiliary frame of the present invention;
FIG. 6 is a top view of the holder of the present invention;
FIG. 7 is a side sectional view of the holder of the present invention;
FIG. 8 is an enlarged schematic view at A of FIG. 7 of the present invention;
FIG. 9 is a side sectional view of another state of the holder of the present invention;
in the figure: 1. a test board body; 2. a clamping frame; 3. assembling a plate; 4. a first magnetic block; 5. an auxiliary frame; 6. a floating ball; 7. a second magnetic block; 8. a first support tray; 9. a second support disc; 10. a third support disc; 11. a hemispherical block; 12. an annular groove; 13. a baffle plate; 14. a spherical cavity; 15. a first through groove; 16. a hemispherical shell; 17. a supporting seat; 18. a spherical shell supporting plate; 19. arc-shaped cuttings; 20. an arc slot; 21. a second through groove; 22. a handle; 23. a support plate; 24. a mounting cavity; 25. mounting a plate; 26. a rack; 27. a mounting frame; 28. a slide bar; 29. a gear; 30. a first clamping plate; 31. a base plate; 32. a third through groove; 33. a first spring; 34. a second clamping plate; 35. a second spring; 36. a trapezoidal block; 37. a trapezoidal groove; 38. a fourth through groove; 39. a first mounting groove; 40. a second mounting groove; 41. a first clamping pad; 42. a second clamping pad.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-5, the physical quantity impulse testing table based on the magnetic suspension principle comprises a testing table body 1, wherein a clamping frame 2 is arranged on one side of the top of the testing table body 1, an assembling plate 3 is arranged on one side of the clamping frame 2 on the top of the testing table body 1, a plurality of first magnetic blocks 4 are arranged on the top of the assembling plate 3, an auxiliary frame 5 is arranged above the first magnetic blocks 4 at one end of the top of the assembling plate 3 close to the clamping frame 2, a floating ball 6 which is movably connected is arranged inside the auxiliary frame 5, second magnetic blocks 7 are arranged at the bottom of the inner side of the floating ball 6, the first magnetic blocks 4 and the second magnetic blocks 7 have the same magnetism, three groups of first magnetic blocks 4 are arranged, the distance between every two adjacent first magnetic blocks 4 is equal, the three groups of first magnetic blocks 4 are arranged on the top of the assembling plate 3 in parallel, the distance between two adjacent groups of first magnetic blocks 4 is equal, the first magnetic blocks 4 arranged in the middle of the two groups are staggered with the other two groups of first magnetic blocks 4, two adjacent first magnetic blocks 4 arranged in the middle of the two groups and the other two adjacent first magnetic blocks 4 form a cross structure, the distance between the two adjacent first magnetic blocks 4 forming the cross structure is equal, the second magnetic block 7 comprises a first supporting disk 8, a second supporting disk 9 is arranged at the bottom of the first supporting disk 8, a third supporting disk 10 is arranged at the bottom of the second supporting disk 9, a hemispherical block 11 is arranged at the bottom of the third supporting disk 10, the outer diameters of the first supporting disk 8, the second supporting disk 9, the third supporting disk 10 and the hemispherical block 11 are sequentially reduced, an annular groove 12 is horizontally arranged on the outer wall of the floating ball 6, and a baffle 13 is vertically arranged on the inner side of the annular groove 12 on the outer wall of the floating ball 6, the cross section of the annular groove 12 is of an arc-shaped structure, the height of the annular groove 12 is greater than one half of the outer diameter of the floating ball 6, the height of the annular groove 12 is less than two thirds of the outer diameter of the floating ball 6, the depth of the annular groove 12 is greater than one third of the outer diameter of the floating ball 6, the depth of the annular groove 12 is less than one half of the outer diameter of the floating ball 6, a spherical cavity 14 is arranged at the center of the inner part of the floating ball 6, a plurality of first through grooves 15 are arranged on the outer wall of the annular groove 12, one end of each first through groove 15 is communicated with the spherical cavity 14, the first through grooves 15 are parallel to the spherical inner surface of the spherical cavity 14, the auxiliary frame 5 comprises a semi-spherical shell 16 and two supporting seats 17, the two supporting seats 17 are arranged below the semi-spherical shell 16, a spherical shell supporting plate 18 is arranged at the top of each supporting seat 17, and arc-shaped inserting strips 19 are symmetrically arranged on two sides of the bottom of the semi-spherical shell 16, the top of the spherical shell supporting plate 18 is provided with an arc slot 20 matched with the arc inserting strip 19.
The handle 22 is arranged at the top of the hemispherical shell 16, and the hemispherical shell 16 can be lifted upwards or pulled upwards by using the handle 22, so that the operation is convenient and quick.
The inner diameter of the spherical cavity 14 is one fourth of the outer diameter of the floating ball 6, so that the internal space distribution of the spherical cavity 14 is more reasonable, and the stability of the floating ball 6 is ensured.
A second through groove 21 is formed in the outer wall of the baffle 13, and the second through groove 21 is communicated with the first through groove 15, so that impulse can pass through the second through groove 21 to enter the baffle 13, and meanwhile can pass through the first through groove 15 to enter the spherical cavity 14.
The cross section of the baffle 13 is overlapped with that of the annular groove 12, so that the outer edge of the baffle 13 is overlapped with that of the floating ball 6, and the stability of the floating ball 6 is further ensured.
The implementation mode specifically comprises the following steps: when the test table is used, a micro propeller to be tested is placed on the inner side of the clamping frame 2 by arranging the test table body 1, the clamping frame 2, the assembling plate 3, the first magnetic blocks 4, the auxiliary frame 5, the floating ball 6 and the second magnetic blocks 7, the clamping frame 2 clamps and fixes the micro propeller, the hemispherical shell 16 is lifted upwards, the arc-shaped inserting strips 19 are drawn out from the arc-shaped inserting grooves 20, as the magnetism of the first magnetic blocks 4 is the same as that of the second magnetic blocks 7, repulsion force is generated between the first magnetic blocks 4 and the second magnetic blocks 7, the second magnetic blocks 7 are pushed upwards, the first magnetic blocks 4 are arranged into three groups, the distance between every two adjacent first magnetic blocks 4 is equal, the first magnetic blocks 4 in the three groups are arranged on the top of the assembling plate 3 in parallel, so that the first magnetic blocks 4 are more uniformly distributed, meanwhile, the magnetic field formed on the top of the assembling plate 3 is uniform and more uniform, the distance between the two adjacent first magnetic blocks 4 is equal, the first magnetic blocks 4 arranged in the middle of the two groups are arranged in a staggered manner with the other two groups of first magnetic blocks 4, so that the distribution uniformity of magnetic fields and magnetic forces at the top of the assembling plate 3 is further improved, the stability of the floating ball 6 during movement is ensured, the two adjacent first magnetic blocks 4 arranged in the middle of the two groups and the other two groups of adjacent first magnetic blocks 4 form a cross-shaped structure, the distance between the two adjacent first magnetic blocks 4 forming the cross-shaped structure is equal, the first magnetic blocks 4 continuously distributed in the cross-shaped structure can form a plurality of different magnetic fields, so that the stress between the magnetic fields is more uniform, the second magnetic blocks 7 are shifted from one cross-shaped magnetic field to the next cross-shaped magnetic field by the same impulse, the impulse required by each shift of the floating ball 6 to one cross-shaped magnetic field is equal, the opposite impulse test is more accurate, and the second magnetic blocks 7 are formed by the first supporting discs 8, A second supporting disk 9, a third supporting disk 10 and a hemispherical block 11 are stacked, the outer diameters of the first supporting disk 8, the second supporting disk 9, the third supporting disk 10 and the hemispherical block 11 are sequentially reduced, so that the second magnetic block 7 forms a gyro-type structure, the stability of the floating ball 6 during rotation is better, the second magnetic block 7 of the gyro-type structure is more stable under the action of a magnetic field of the first magnetic block 4, the cross section of the gyro-type structure is an arc-shaped annular groove 12, the floating ball 6 is in a dome-shaped and bottom-spherical structure, the height of the annular groove 12 is set to be more than one half of the outer diameter of the floating ball 6, the height of the annular groove 12 is less than two thirds of the outer diameter of the floating ball 6, the depth of the annular groove 12 is more than one third of the outer diameter of the floating ball 6, the middle part of the floating ball 6 is in a structural shape with two ends thick and a middle part thin, the stability of the floating ball 6 can be further ensured, the baffle 13 is arranged on the inner side of the annular groove 12, the annular groove 12 can be divided into a plurality of components by the baffle 13, the micro-propeller sends out micro-impulse, when the micro-impulse impacts the annular groove 12, the baffle 13 shields the micro-impulse, the borne micro-impulse is more, the impulse loss can be reduced, the impulse testing accuracy is ensured, and the micro-impulse impacting the surface of the annular groove 12 can enter the spherical cavity 14 on the inner side of the floating ball 6 through the first through groove 15; the micro impulse is collected in the spherical cavity 14 and then discharged from the first through grooves 15 at other positions, the rotation speed of the floating ball 6 can be effectively accelerated due to the impact of the micro impulse, when the micro impulse impacts on the surface of the annular groove 12, the floating ball 6 rotates, the micro impulse is continuously pushed and can continuously impact on the surfaces of the annular grooves 12 at other positions, the micro impulse enters the spherical cavity 14 from other first through grooves 15 and generates a sealing and blocking effect on the micro impulse which previously enters the spherical cavity 14, the movement time of the micro impulse in the floating ball 6 is prolonged, the micro impulse is enabled to act on the floating ball 6 as much as possible, the loss is reduced, the impulse test is enabled to be more accurate, the baffle 13 can be used as a fan blade, the floating ball 6 rotates more stably, the auxiliary frame 5 performs auxiliary limiting support on the floating ball 6, the semi-spherical shell 16 performs three hundred sixty degrees of limiting support above the floating ball 6, supporting seat 17 supports floater 6, spherical shell layer board 18 supports floater 6 bottom, spherical shell layer board 18 is better to the laminating effect of floater 6 bottom, make floater 6 stability better, utilize the cooperation to realize utilizing the magnetic suspension principle to test the impulse between a plurality of first magnetism piece 4 and the second magnetism piece 7, energy loss is littleer, the size of impulse can be according to the length of floater 6 at the displacement of assembly plate 3 top and the size of the little impulse of rotation speed judgement of floater 6, the floater 6 is longer more at the length of assembly plate 3 top displacement, then impulse numerical value is big more, the length of displacement equals in assembly plate 3 top when floater 6, the rotation speed of floater 6 is fast more, then impulse numerical value is big more, it is more sensitive to measure, can effectively test micro-propulsor's little impulse.
As shown in the attached drawings 1 and 6-9, the physical quantity impulse testing table based on the magnetic suspension principle further comprises support plates 23 symmetrically arranged on two sides of the top of the holding frame 2, a mounting cavity 24 is vertically formed in the top of each support plate 23, a mounting plate 25 in sliding connection is arranged in the mounting cavity 24, a rack 26 is vertically arranged on the top of each mounting plate 25, a mounting frame 27 is arranged on the top of each support plate 23 and on the outer side of the corresponding mounting cavity 24, a sliding rod 28 in rotary connection is arranged on one side, located on the rack 26, of the inner side of each mounting frame 27, a gear 29 meshed with the corresponding rack 26 is sleeved on the outer wall of each sliding rod 28, a first clamping plate 30 is arranged on the outer side of each gear 29 on the outer wall of each sliding rod 28, the bottoms of the two mounting plates 25 are provided with the same bottom plate 31, and third through grooves 32 matched with the bottom plates 31 are formed in the outer wall of each support plate 23, the mounting panel 25 outer wall is kept away from third logical groove 32 one side is equipped with the first spring 33 of a plurality of, first spring 33 bottom in backup pad 23 inner wall fixed connection, backup pad 23 inner wall in third logical groove 32 top is equipped with a plurality of swing joint's second grip block 34, second grip block 34 bottom level is equipped with second spring 35, second spring 35 one end with backup pad 23 inner wall fixed connection, second grip block 34 outer wall is close to mounting panel 25 one side is equipped with trapezoidal piece 36, mounting panel 25 outer wall be equipped with trapezoidal piece 36 assorted trapezoidal groove 37.
The outer wall of the supporting plate 23 is provided with a fourth through groove 38 matched with the second clamping plate 34, and the fourth through groove 38 passes through the second clamping plate 34, so that the second clamping plate 34 can clamp the outer wall of the micro thruster.
The backup pad 23 inner wall be equipped with first spring 33 assorted first mounting groove 39, backup pad 23 inner wall be equipped with second spring 35 assorted second mounting groove 40, first mounting groove 39 provides installation and activity space for first spring 33, guarantees that first spring 33 can carry out normal compression and kick-backs, and second mounting groove 40 provides installation and activity space for second spring 35, guarantees that second spring 35 can carry out normal compression and kick-backs.
The implementation mode is specifically as follows: when the micro propeller is used, by arranging the supporting plate 23, the mounting plate 25, the rack 26, the gear 29, the first clamping plate 30, the second clamping plate 34, the trapezoidal blocks 36 and the trapezoidal grooves 37, when the micro propeller is placed into the clamping frame 2, the bottom of the micro propeller is contacted with the top of the bottom plate 31, the bottom plate 31 is pressed downwards by the micro propeller, the bottom plate 31 moves downwards under the gravity action of the micro propeller, the mounting plate 25 is pulled downwards by the bottom plate 31, the mounting plate 25 moves downwards in the mounting cavity 24 of the supporting plate 23, the first spring 33 is compressed and deformed, in the process that the mounting plate 25 moves downwards, the trapezoidal grooves 37 press the trapezoidal blocks 36 downwards, the trapezoidal blocks 36 move outwards, the second clamping plate 34 extends out of the supporting plate 23, the second spring 35 is compressed to clamp the side wall of the micro propeller, the stability of the micro propeller can be effectively enhanced, and when the mounting plate 25 moves downwards, the rack 26 moves downwards along with the mounting plate 25, the gear 29 is meshed with the rack 26, when the rack 26 moves downwards, the gear 29 rotates, the gear 29 drives the slide rod 28 to rotate, the mounting frame 27 supports the slide rod 28 and further drives the first clamping plate 30 to rotate, the first clamping plate 30 is turned from a vertical state to a horizontal state, the top of the micro thruster is clamped, the safety and the stability of the micro thruster can be effectively enhanced, when the micro thruster is lifted upwards, the first spring 33 rebounds to push the mounting plate 25 upwards, the mounting plate 25 moves upwards to push the rack 26 upwards, the gear 29 rotates to turn the first clamping plate 30 from the horizontal state to the vertical state, when the trapezoidal groove 37 is aligned with the trapezoidal block 36, the second spring 35 rebounds to push the second clamping plate 34 inwards, the second clamping plate 34 is separated from the side wall of the micro thruster, the miniature propeller taking operation is realized, and the miniature propeller taking operation is convenient and fast.
The working principle of the invention is as follows:
referring to the attached drawings 1-5 of the specification, by arranging a test board body 1, a clamping frame 2, an assembling plate 3, a first magnetic block 4, an auxiliary frame 5, a floating ball 6 and a second magnetic block 7, repulsion force is generated between the first magnetic block 4 and the second magnetic block 7, the second magnetic block 7 is pushed upwards, the first magnetic blocks 4 which are continuously distributed in a cross structure can form a plurality of different magnetic fields, so that the stress between the magnetic fields is more uniform, the momentum required by the displacement of the second magnetic block 7 from one cross structure magnetic field to the next cross structure magnetic field is the same, so that the opposite momentum test is more accurate, the second magnetic block 7 forms a gyro structure, so that the stability of the floating ball 6 during rotation is better, the second magnetic block 7 in the gyro structure is more stable under the action of the magnetic field of the first magnetic block 4, the micro-momentum is sent by a micro-thruster, and the micro-momentum impacts an annular groove 12, the baffle 13 is used for shielding, so that more micro-impulse can be borne, the impulse loss can be reduced, the impulse testing accuracy can be ensured, and the micro-impulse impacting the surface of the annular groove 12 can enter the spherical cavity 14 on the inner side of the floating ball 6 through the first through groove 15; the micro impulse is collected in the spherical cavity 14, when the micro impulse impacts the surface of the annular groove 12, the floating ball 6 rotates, the micro impulse is continuously pushed and can continuously impact the surface of the annular groove 12 at other positions, the micro impulse enters the spherical cavity 14 from other first through grooves 15, and the micro impulse which previously enters the spherical cavity 14 generates a sealing and blocking effect, so that the movement time of the micro impulse in the floating ball 6 is prolonged, the micro impulse is ensured to act on the floating ball 6 as much as possible, the loss is reduced, the impulse test is more accurate, the impulse is tested by utilizing the magnetic suspension principle by utilizing the matching of the first magnetic blocks 4 and the second magnetic blocks 7, the energy loss is smaller, the impulse can be judged according to the displacement length of the floating ball 6 above the assembling plate 3 and the rotation speed of the floating ball 6, the displacement length of the floating ball 6 above the assembling plate 3 is longer, the larger the impulse value is, when the displacement lengths of the floating balls 6 above the assembly plate 3 are equal, and the rotating speed of the floating balls 6 is faster, the larger the impulse value is, the more sensitive the measurement is, and the micro impulse of the micro propeller can be effectively tested;
referring to the attached drawings 1 and 6-9 of the specification, by arranging the supporting plate 23, the mounting plate 25, the rack 26, the gear 29, the first clamping plate 30, the second clamping plate 34, the trapezoidal block 36 and the trapezoidal groove 37, the micro propeller presses the bottom plate 31 downwards, the mounting plate 25 is pulled downwards by the bottom plate 31, the mounting plate 25 moves downwards in the mounting cavity 24 of the supporting plate 23, the trapezoidal groove 37 presses the trapezoidal block 36 downwards, the trapezoidal block 36 moves outwards, so that the second clamping plate 34 extends out of the supporting plate 23, the second spring 35 compresses to clamp the side wall of the micro propeller, the rack 26 moves downwards along with the mounting plate 25, when the rack 26 moves downwards, the gear 29 rotates, the gear 29 drives the sliding rod 28 to rotate, the first clamping plate 30 rotates, the first clamping plate 30 turns from a vertical state to a horizontal state, and the top of the micro propeller is clamped, the safety and the stability of the micro propeller can be effectively enhanced.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a physical quantity impulse testboard based on magnetic suspension principle, includes testboard body (1), its characterized in that: a clamping frame (2) is arranged on one side of the top of the test board body (1), an assembly plate (3) is arranged on one side, located on the clamping frame (2), of the top of the test board body (1), a plurality of first magnetic blocks (4) are arranged on the top of the assembly plate (3), an auxiliary frame (5) is arranged above the first magnetic blocks (4) at one end, close to the clamping frame (2), of the top of the assembly plate (3), a floating ball (6) is movably connected to the inner side of the auxiliary frame (5), a second magnetic block (7) is arranged at the bottom of the inner side of the floating ball (6), and the first magnetic block (4) and the second magnetic block (7) are identical in magnetism;
the first magnetic blocks (4) are provided with three groups, the distance between every two adjacent first magnetic blocks (4) is equal, the first magnetic blocks (4) are arranged in parallel at the top of the assembling plate (3), the distance between every two adjacent first magnetic blocks (4) is equal, the first magnetic blocks (4) arranged in the middle of the two groups are staggered with the other two groups of first magnetic blocks (4), the adjacent two first magnetic blocks (4) arranged in the middle of the two groups and the other two adjacent first magnetic blocks (4) form a cross structure, the distance between the adjacent two first magnetic blocks (4) forming the cross structure is equal, the second magnetic blocks (7) comprise first supporting discs (8), second supporting discs (9) are arranged at the bottoms of the first supporting discs (8), and third supporting discs (10) are arranged at the bottoms of the second supporting discs (9), a hemispherical block (11) is arranged at the bottom of the third supporting plate (10), the outer diameters of the first supporting plate (8), the second supporting plate (9), the third supporting plate (10) and the hemispherical block (11) are sequentially reduced, an annular groove (12) is horizontally arranged on the outer wall of the floating ball (6), a baffle (13) is vertically arranged on the inner side of the annular groove (12) on the outer wall of the floating ball (6), the cross section of the annular groove (12) is of a circular arc structure, the height of the annular groove (12) is greater than one half of the outer diameter of the floating ball (6), the height of the annular groove (12) is less than two thirds of the outer diameter of the floating ball (6), the depth of the annular groove (12) is greater than one third of the outer diameter of the floating ball (6), the depth of the annular groove (12) is less than one half of the outer diameter of the floating ball (6), and a spherical cavity (14) is arranged in the center of the inner part of the floating ball (6), annular groove (12) outer wall is equipped with the first logical groove of a plurality of (15), first logical groove (15) one end with spherical chamber (14) link up, first logical groove (15) with the interior parallel of ball warp in spherical chamber (14), auxiliary frame (5) are including hemisphere shell (16) and two supporting seats (17), two supporting seat (17) are located hemisphere shell (16) below, supporting seat (17) top is equipped with spherical shell layer board (18), hemisphere shell (16) bottom bilateral symmetry is equipped with arc cutting (19), spherical shell layer board (18) top seted up with arc cutting (19) assorted arc slot (20).
2. The physical quantity impulse testing table based on the magnetic suspension principle as claimed in claim 1, wherein: the top of the semi-spherical shell (16) is provided with a handle (22).
3. The physical quantity impulse testing table based on the magnetic suspension principle as claimed in claim 2, wherein: the inner diameter of the spherical cavity (14) is one fourth of the outer diameter of the floating ball (6).
4. A physical quantity impulse testing table based on the magnetic suspension principle as claimed in claim 3, characterized in that: a second through groove (21) is formed in the outer wall of the baffle (13), and the second through groove (21) is communicated with the first through groove (15).
5. The physical quantity impulse testing table based on the magnetic suspension principle as claimed in claim 4, wherein: the cross section of the baffle (13) is coincident with the cross section of the annular groove (12).
6. The physical quantity impulse testing table based on the magnetic suspension principle as claimed in claim 5, wherein: the clamping frame is characterized in that supporting plates (23) are symmetrically arranged on two sides of the top of the clamping frame (2), a mounting cavity (24) is vertically formed in the top of the supporting plate (23), a mounting plate (25) which is connected in a sliding mode is arranged inside the mounting cavity (24), a rack (26) is vertically arranged on the top of the mounting plate (25), a mounting frame (27) is arranged on the top of the supporting plate (23) outside the mounting cavity (24), a sliding rod (28) which is connected in a rotating mode is arranged on one side of the rack (26) on the inner side of the mounting frame (27), a gear (29) meshed with the rack (26) is sleeved on the outer wall of the sliding rod (28), a first clamping plate (30) is arranged on the outer side of the gear (29), two same bottom plates (31) are arranged at the bottoms of the mounting plates (25), and third through grooves (32) matched with the bottom plates (31) are formed in the outer wall of the supporting plate (23), mounting panel (25) outer wall is kept away from third leads to groove (32) one side and is equipped with the first spring of a plurality of (33), first spring (33) bottom in backup pad (23) inner wall fixed connection, backup pad (23) inner wall in third leads to groove (32) top and is equipped with a plurality of swing joint's second grip block (34), second grip block (34) bottom level is equipped with second spring (35), second spring (35) one end with backup pad (23) inner wall fixed connection, second grip block (34) outer wall is close to mounting panel (25) one side is equipped with trapezoidal piece (36), mounting panel (25) outer wall be equipped with trapezoidal piece (36) assorted dovetail groove (37).
7. The physical quantity impulse test bench based on the magnetic levitation principle as recited in claim 6, wherein: and a fourth through groove (38) matched with the second clamping plate (34) is formed in the outer wall of the supporting plate (23).
8. The physical quantity impulse testing platform based on the magnetic suspension principle as claimed in claim 7, wherein: backup pad (23) inner wall be equipped with first spring (33) assorted first mounting groove (39), backup pad (23) inner wall be equipped with second spring (35) assorted second mounting groove (40).
9. The physical quantity impulse testing platform based on the magnetic suspension principle as claimed in claim 8, wherein: a first clamping pad (41) is arranged on one side of the outer wall of the first clamping plate (30), and a second clamping pad (42) is arranged on one side of the outer wall of the second clamping plate (34).
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| CN202011486753.XA CN112697327B (en) | 2020-12-16 | 2020-12-16 | Physical quantity impulse test bench based on magnetic suspension principle |
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| CN112697327B true CN112697327B (en) | 2022-07-19 |
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| CN1282868C (en) * | 2004-03-19 | 2006-11-01 | 清华大学 | Measure method of pulse force |
| CN102853954B (en) * | 2012-08-30 | 2014-07-16 | 北京航空航天大学 | Measuring device of high-temperature superconductive suspension tiny force |
| CN102998043B (en) * | 2012-12-12 | 2015-05-13 | 北方工业大学 | Device and method for monitoring dynamic thrust of linear motor in suspension state |
| CN103837278B (en) * | 2014-03-17 | 2017-01-11 | 苏州久富农业机械有限公司 | planting arm thrust testing device |
| CN106248281B (en) * | 2016-09-20 | 2018-12-11 | 哈尔滨工业大学 | A kind of plane torsion declines impulse measurement method |
| CN107144399A (en) * | 2016-12-14 | 2017-09-08 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of lifting force value loads the small value impulsive force generating means of the degree of accuracy |
| CN110068410B (en) * | 2019-05-05 | 2020-09-08 | 中国人民解放军国防科技大学 | Passive shock wave impulse measurement sensor based on momentum block |
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