CN112858968B - Magnetic return neutral force detection device - Google Patents
Magnetic return neutral force detection device Download PDFInfo
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- CN112858968B CN112858968B CN202110121845.6A CN202110121845A CN112858968B CN 112858968 B CN112858968 B CN 112858968B CN 202110121845 A CN202110121845 A CN 202110121845A CN 112858968 B CN112858968 B CN 112858968B
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- 238000001514 detection method Methods 0.000 title claims abstract description 42
- 230000007935 neutral effect Effects 0.000 title claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 238000005259 measurement Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000005415 magnetization Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
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Abstract
The invention relates to the field of magnetic force detection, in particular to a magnetic return neutral force detection device. The utility model provides a force detection device in magnetic return, includes pulling force measuring mechanism and carries thing mechanism, pulling force measuring mechanism includes the lifting unit who is used for making the pulling force meter go up and down, carry thing mechanism to include upper plate and the hypoplastron that sets up along the fore-and-aft direction, the upper plate is located the hypoplastron top, the pulling force meter is located upper plate rear end top, the upper plate front end is equipped with downwardly extending's first support column, be equipped with 2n year thing piece group between upper plate rear end and the hypoplastron rear end, 2n year thing piece group sets up along controlling the direction interval, and every year thing piece group all includes a first year thing piece and a second year thing piece, first year thing piece is fixed with the upper plate, the second year thing piece is fixed with the hypoplastron, and the first year thing piece and the second year thing piece of same year thing piece group are left and right adjacent. The invention has the advantage of improving the accuracy of magnetic return force detection.
Description
Technical Field
The invention relates to the field of magnetic force detection, in particular to a magnetic return neutral force detection device.
Background
The magnetic return force generally refers to a force generated in pulling the magnet or the magnetic assembly away from the direction perpendicular to the magnetization direction, the force having a direction perpendicular to the magnetization direction, the force having the effect of returning the magnet or the magnetic assembly to the original position along the direction perpendicular to the magnetization direction. The magnetic attraction force generally refers to a force generated in pulling the magnet or the magnetic component parallel to the magnetization direction, the direction of the force being parallel to the magnetization direction, and the effect of the force being to return the magnet or the magnetic component to the original position in parallel to the magnetization direction.
In general, the magnetic return neutral force of a double magnet or magnetic assembly is detected every time, the existing equipment for testing the magnetic return neutral force is modified into equipment for testing gravity, drawing force and shearing force, the magnetic return neutral force is different from gravity, and in the process that the magnet or magnetic assembly is pulled away from an initial position, magnetic force lines are rearranged along a path with maximum magnetic permeability, and the corresponding magnetic return neutral force and magnetic attraction force also change. The change of the magnetic attraction force in the deviating process is nonlinear, and the strong friction force generated by the magnetic attraction force acting on the contact surface is nonlinear, so that the detection of the magnetic return force is interfered due to the fact that the direction of the friction force is opposite to the direction of the magnetic return force, and the detection result of the existing detection equipment is inaccurate.
Disclosure of Invention
The invention aims to provide a magnetic return neutral force detection device capable of improving the magnetic return neutral force detection accuracy.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a magnetic return middle force detection device, includes pulling force measuring mechanism and carries thing mechanism, pulling force measuring mechanism includes pulling force meter and is used for making pulling force meter lift assembly, carry thing mechanism includes upper plate and lower plate that sets up along fore-and-aft direction, the upper plate is located the lower plate top, pulling force meter is located upper plate rear end top, the upper plate front end is equipped with the first support column of downwardly extending, be equipped with 2n year thing piece group between upper plate rear end and the lower plate rear end, 2n year thing piece group sets up along controlling the direction interval, every year thing piece group all includes a first year thing piece and a second year thing piece, first year thing piece is fixed with the upper plate, the second year thing piece is fixed with the lower plate, first year thing piece and the second year thing piece of same year thing piece group are left and right adjacent, be formed with the first standing groove that is used for placing the product that waits to detect on the second year thing piece, be formed with the second standing groove that is used for placing the detection on the second year thing piece; when the rear end of the upper plate is connected with the tension meter and the tension meter moves upwards, the rear end of the upper plate can rotate upwards by taking the lower end of the first support column as the center.
When the invention is used, 2n identical products to be detected are respectively placed in a first placing groove, the connection between the tension meter and the rear end of the upper plate is carried out, and then the rear end of the upper plate is pulled upwards by a certain distance through the lifting component, so that the rear end of the upper plate is turned upwards by a very small angle, and the tension F Front part at the moment is measured; then resetting the upper plate, respectively placing the same detecting magnets in 2n second placing grooves, then pulling the rear end of the upper plate upwards for a certain distance through the lifting assembly again, enabling the rear end of the upper plate to be turned upwards by a very small angle with the same size, and measuring the pulling force F Rear part (S) at the moment; finally, resetting the upper plate and taking out the product.
Wherein the pulling force F 2,F2=F Rear part (S) -F Front part is calculated. The distance between the axis of the first support column and the stressed position of the rear end of the upper plate is L 2, the distance between the axis of the first support column and the plane of the center of the product to be detected is L 1, and finally the magnetic return centering force of the product to be detected is F 1=F2*L2/L1. When the upper plate rotates, the minimum angle is smaller than 5 degrees, and when the upper plate rotates upwards by 5 degrees by taking the lower end of the first support column as the center, the front-back displacement of the rear end of the upper plate is negligible. Wherein L 1 is the horizontal distance from the front end fulcrum of the upper plate to the center of the magnet or the magnetic component, and the equivalent distance can be actually measured for the magnet or the magnetic component with symmetrical center; for non-centrosymmetric magnets or magnetic assemblies, this distance can be measured by existing software analysis.
Through placing the magnet for detection at the product side that waits to detect, through setting up 2n carrier block group to offset the magnetic attraction each other, magnetic attraction interference problem and the slope problem of in-process in the test magnetic force of returning that can be very big have also improved accuracy, uniformity and the repeatability that the magnetic force detected in returning simultaneously, in order to can realize the accurate detection to the magnetic force in returning of magnet or magnetic component. Wherein n is a positive integer greater than or equal to 1. The upper plate and the lower plate can be horizontally arranged before and after detection, so that the front, back, upper and lower positions of 2n products to be detected are better guaranteed to be the same, and the front, back, upper and lower positions of the magnet for detection are guaranteed to be the same. The first placing groove can be arranged on the left side surface and the right side surface of the first carrying block, and also can be arranged on the front end surface and the rear end surface of the first carrying block, and the second placing groove is similar. Wherein, can adopt conventional frock to carry out the fixed of waiting to detect product and magnet for detection. The first carrying blocks and the second carrying blocks of the carrying block group are in smooth contact, or gaps are reserved between the first carrying blocks and the second carrying blocks of the carrying block group, so that the product to be detected and the magnet for detection can be attracted, and the lifting and the rotation of the upper plate can be facilitated.
Preferably, n is 1, and the first placing groove and the second placing groove are not communicated with each other; the two carrying block groups are symmetrically arranged left and right. Only two carrying blocks are arranged, so that the production, processing and assembly cost of the invention can be reduced better, the magnetic attraction force can be counteracted better, and the problem of detection accuracy reduction caused by the fact that the front and rear positions of the carrying block groups are not opposite is avoided. Wherein, first standing groove and second standing groove are not linked together, can avoid waiting to detect the product and adsorb on detecting with the magnet to avoid the rising of first year thing piece. The two object carrying block groups are symmetrically arranged left and right, so that magnetic attraction force can be better counteracted, and the detection accuracy of magnetic return force is improved.
Preferably, the lower end surface of the upper plate is always positioned above the upper end surface of the second carrying block; a first connecting plate is connected between the upper ends of the first carrying blocks, a second connecting plate is connected between the lower ends of the second carrying blocks, the first connecting plate is fixed with the upper plate, the second connecting plate is fixed with the lower plate, and the second carrying blocks are not contacted with the first connecting plate all the time; the first carrying block is always positioned on the upper side of the second connecting plate; the first carrying block is always positioned on the upper side of the second connecting plate.
The lower end surface of the upper plate can not be contacted with the upper end surface of the second carrying block, so that friction force between the upper plate and the second carrying block during rotation of the upper plate is reduced. The first connecting plate and the second connecting plate are arranged so as to facilitate the assembly of the 2n first carrying blocks and the second carrying blocks, so that the same front-back upper-lower positions of the 2n first carrying blocks are better ensured, and the same front-back upper-lower positions of the 2n second carrying blocks are better ensured. When the upper plate is in contact with the lower plate, the first carrier block may be supported on the second connection plate such that the rear end of the upper plate is supported.
Preferably, the lower end surface of the first carrying block is in a cambered surface structure; or a yielding groove is formed on the lower end surface of the first carrying block or a contact surface contacted with the lower end surface of the first carrying block. When the rear end of the upper plate is lifted, the friction force between the first carrying block and the second connecting plate or the lower plate is reduced, and meanwhile, the weight of the first carrying block is lightened, so that the rear end of the upper plate is lifted conveniently.
Preferably, a drag hook is fixed at the rear end of the upper plate; the draw hook comprises draw hook body and fixed block, the fixed block is fixed with the upper plate, the fixed block is formed with the holding tank, the fixed block upper end is equipped with the through groove that makes holding tank and external intercommunication, the draw hook body includes hook portion, is located the perpendicular portion of hook portion lower extreme, is located the spacing portion of perpendicular portion lower extreme, perpendicular portion is located through the inslot, spacing portion up end is the arc surface, through the inside diameter of the groove from bottom to top progressively increases, through the inside diameter of the groove lower extreme is greater than perpendicular portion external diameter, the holding tank roof constitute with spacing portion up end matched with arc surface.
The drag hook is arranged so as to be more convenient for the connection of the lifting tension meter of the upper plate and the existing detection equipment, so that the rear end of the upper plate is lifted, and the magnetic return middle force detection is facilitated. The vertical part of the draw hook can incline relatively to the axis passing through the groove, and the draw hook can incline adaptively so as to eliminate the influence caused by the rotation of the upper plate by a very small angle as far as possible.
Preferably, the number of the draw hooks is one and is positioned in the middle of the upper plate, and the number of the carrying block groups on the left side of the draw hooks is the same as the number of the carrying block groups on the right side of the draw hooks. The drag hook is arranged in the middle of the upper plate to ensure left and right balance when the upper plate is lifted, so that the upper plate is prevented from tilting left and right.
Preferably, the upper plate and the lower plate are both matched with a level meter, the first support column is in a bolt shape and is in threaded fixation with the upper plate, the front end of the lower plate is provided with a second support column extending downwards, the second support column is in a bolt shape and is in threaded fixation with the lower plate, and the rear end of the lower plate is arranged on the support plate; the left side and the right side of the front end of the upper plate are respectively provided with a first supporting column, and the left side and the right side of the front end of the lower plate are respectively provided with a second supporting column.
The level gauge can be arranged externally or fixed on the upper plate and the lower plate. The level gauge is arranged to better realize the level of the upper plate and the lower plate, so that the position of the magnet or the magnetic component at the object carrying block group is more accurate, and the magnetic attraction counteracting effect is better. The first support column and the second support column can rotate through threads to realize up-and-down movement, so that the structure of the invention is simpler and the manufacturing and assembling cost is lower.
Preferably, the thickness of the front and rear space of the lower end of the first support column is gradually reduced from top to bottom; the lower end of the first support column is conical; the lower end surface of the first support column is arranged in an arc surface structure; the lower end of the first support column is supported on the bottom plate or the lower plate, a positioning groove which is opened upwards is formed at the upper end face end of the bottom plate or the lower plate, the lower end of the first support column is always positioned in the positioning groove, and the width of the positioning groove is gradually increased from bottom to top. The lower end of the first support column is arranged so as to facilitate the rotation of the first support column. Wherein the first support column is supported in the positioning groove, and is not rotatably fixed on the bottom plate (working table) or the lower plate through hinging, so that friction force when the upper plate rotates is reduced. Wherein. The bottom of the positioning groove can be provided with an arc surface to reduce the friction force of the first support column during swinging.
Preferably, the length of the upper plate is at least five times the length of the first carrying block along the front-rear direction. After the rear end of the upper plate is lifted, the front-back displacement of the first carrying block is extremely small, so that the error of the detection result is relatively small.
Preferably, the lifting assembly comprises a screw rod module, the screw rod module is provided with a sliding block capable of moving up and down, a shell of the tension meter is fixed with the sliding block, and the tension meter is a digital display tension meter. The screw rod module is used as a lifting assembly, so that the lifting precision is higher. Wherein, can adopt hand formula lead screw module, also can adopt motor drive's lead screw module. The tension meter is digital display, so that the detection personnel can observe the front and back tension conveniently.
The invention has the advantage of improving the accuracy of magnetic return force detection.
Drawings
FIG. 1 is a schematic view of a carrying mechanism according to the present invention;
FIG. 2 is a schematic view of another embodiment of the carrying mechanism of the present invention;
FIG. 3 is a schematic view of a structure of the present invention;
fig. 4 is a schematic view of the structure of the drag hook at the rear end of the upper plate of the present invention.
Detailed Description
The invention is further described below with reference to the drawings and specific embodiments.
As shown in fig. 1 to 3, the magnetic return neutral force detection device of the present invention includes a tension measurement mechanism and a carrying mechanism. The tension measuring mechanism includes a tension meter 91 and a lifting assembly for lifting and lowering the tension meter 91. The carrying mechanism comprises an upper plate 1 and a lower plate 2 which are arranged along the front-back direction, wherein the upper plate 1 is positioned above the lower plate 2 and is parallel to each other, a first supporting column 3 which extends downwards is arranged at the front end of the upper plate 1, a tension meter 91 is positioned above the rear end of the upper plate 1, when the rear end of the upper plate 1 is connected with the tension meter 91, and the tension meter 91 moves upwards, the rear end of the upper plate 1 can rotate upwards by taking the lower end of the first supporting column 3 as the center. The lifting assembly comprises a screw rod module, the screw rod module 92 is provided with a sliding block 93 capable of moving up and down, a shell of the tension meter 91 is fixed with the sliding block 93, and the tension meter 91 is a digital display tension meter.
Two carrying block groups are arranged between the rear end of the upper plate and the rear end of the lower plate, the two carrying block groups are arranged at intervals along the left-right direction, each carrying block group comprises a first carrying block 4 and a second carrying block 5, the first carrying block 4 is fixed with the upper plate 1, the second carrying block 5 is fixed with the lower plate 2, the first carrying block 4 and the second carrying block 5 of the same carrying block group are adjacent left and right, a first placing groove 41 for placing a product to be detected is formed on the first carrying block 4, and a second placing groove 51 for placing a magnet for detection is formed on the second carrying block 5. Wherein, the length of the upper plate 1 is ten times of the length of the first carrying block 4 along the front-back direction.
The first standing groove 41 and the second standing groove 51 are not communicated with each other, the two carrying block groups are symmetrically arranged left and right, the two first carrying blocks 4 are located between the two second carrying blocks 5, the first standing groove 41 is arranged on the right side face of the first carrying block 4 located on the left side, the second standing groove 51 is arranged on the left side face of the second carrying block 5 located on the left side, the first standing groove 41 is arranged on the left side face of the first carrying block 4 located on the right side, and the second standing groove 51 is arranged on the right side face of the second carrying block 5 located on the right side.
A first connecting plate 42 is connected between the upper ends of the two first carrying blocks 4 to form an n-shaped structure, a second connecting plate 52 is connected between the lower ends of the two second carrying blocks 5 to form a u-shaped structure, the first connecting plate 42 is fixed with the upper plate 1, the second connecting plate is fixed with the lower plate, and the second carrying blocks are not contacted with the first connecting plate all the time. The lower end face of the upper plate 1 is always located above the upper end face of the second carrying block 5, the first carrying block 4 is always located above the second connecting plate 52, and before the invention is used, the first carrying block 4 is supported on the upper end face of the second connecting plate 52. In order to reduce the friction between the first carrying block 4 and the second connecting plate 52, the lower end surface of the first carrying block 4 may be configured as a cambered surface structure.
The upper plate 1 and the lower plate 2 are matched with a level meter 7. The left and right sides of the front end of the upper plate 1 are respectively provided with a first support column 3, and the left and right sides of the front end of the lower plate 2 are respectively provided with a second support column 8 which extends downwards. The first support column 3 is in a bolt shape and is in threaded fixation with the upper plate 1, the second support column 8 is in a bolt shape and is in threaded fixation with the lower plate 2, and the rear end of the lower plate 2 is erected on the support plate 20. The thickness of the front and rear of the lower end of the first support column 3 is gradually reduced from top to bottom, the lower end of the first support column 3 is conical, the lower end face of the first support column 3 is arranged in an arc-shaped structure, the lower end of the first support column 3 is supported on the lower plate 2, a positioning groove with an upward opening is formed at the upper end face end of the lower plate 2, the lower end of the first support column 3 is always located in the positioning groove, and the width of the positioning groove is gradually increased from bottom to top. Wherein, the table surface on which the invention is placed is provided with a fixing groove for limiting the second support column 8.
As shown in fig. 1,2 and 4, the rear end of the upper plate 1 is fixed with a drag hook 6, the number of drag hooks 6 is one and is positioned in the middle of the upper plate 1, and two object carrying block groups are bilaterally symmetrical with the drag hook 6 as a center. The drag hook 6 comprises drag hook body and fixed block 62, fixed block 62 is fixed with upper plate 1, fixed block 62 is formed with holding tank 63, the fixed block 62 upper end is equipped with the through groove 64 that makes holding tank 63 and external intercommunication, the drag hook body includes hook portion 611, be located the perpendicular portion 612 of hook portion 611 lower extreme, be located the spacing portion 613 of perpendicular portion 612 lower extreme, perpendicular portion 612 is located through groove 64, spacing portion 613 up end is the arc surface, through groove 64 internal diameter from bottom to top increases gradually, through groove 64 lower extreme internal diameter is greater than perpendicular portion 612 external diameter and is less than spacing portion 613 width, holding tank 63 cell top constitution and spacing portion 613 up end matched with arc surface.
When the device is used, the distance between the axis of the first support column and the drag hook is measured in advance to be L 2, and the distance between the axis of the first support column and the center of the product is measured to be L 1. And respectively placing 2 identical products to be detected into a first placing groove, then pulling the rear end of the upper plate upwards by a certain distance through the existing detection equipment, so that the rear end of the upper plate is turned upwards by 5 degrees, the pulling force F Front part at the moment is measured, and then resetting the upper plate. The same magnet for detection is respectively placed in the 2 second placing grooves, then the rear end of the upper plate is pulled upwards for a certain distance through the existing detection equipment, so that the rear end of the upper plate is turned upwards for 5 degrees, the pulling force F Rear part (S) at the moment is measured, finally the upper plate is reset, and the product is taken out.
The tensile force F 2,F2=F Rear part (S) -F Front part is calculated first, and then the magnetic return intermediate force F 1 of the measured product is detected: f 1=F2*L2/L1.
The invention has the advantage of improving the accuracy of magnetic return force detection.
Claims (9)
1. The magnetic return middle force detection device is characterized by comprising a tension measurement mechanism and a carrying mechanism, wherein the tension measurement mechanism comprises a tension meter and a lifting assembly for lifting the tension meter, the carrying mechanism comprises an upper plate and a lower plate which are arranged in the front-back direction, the upper plate is positioned above the lower plate, the tension meter is positioned above the rear end of the upper plate, the front end of the upper plate is provided with a first supporting column which extends downwards, 2n carrying block groups are arranged between the rear end of the upper plate and the rear end of the lower plate at intervals in the left-right direction, each carrying block group comprises a first carrying block and a second carrying block, the first carrying block is fixed with the upper plate, the second carrying block is fixed with the lower plate, the first carrying block and the second carrying block of the same carrying block group are adjacent left-right, a first placing groove for placing a product to be detected is formed on the first carrying block, and a second placing groove for placing detection is formed on the second carrying block; when the rear end of the upper plate is connected with the tension meter and the tension meter moves upwards, the rear end of the upper plate can rotate upwards by taking the lower end of the first support column as the center; the first support column is in a bolt shape and is in threaded fixation with the upper plate, and the thickness between the front and the back of the lower end of the first support column is gradually reduced from top to bottom; the lower end of the first support column is conical; the lower end surface of the first support column is arranged in an arc surface structure; the lower end of the first support column is supported on the bottom plate or the lower plate, a positioning groove which is opened upwards is formed at the upper end face end of the bottom plate or the lower plate, the lower end of the first support column is always positioned in the positioning groove, and the width of the positioning groove is gradually increased from bottom to top.
2. The magnetic return neutral force detecting apparatus as claimed in claim 1, wherein said n is 1, said first placement groove and said second placement groove are not communicated with each other; the two carrying block groups are symmetrically arranged left and right.
3. The magnetic return neutral force detection device according to claim 1, wherein the lower end surface of the upper plate is always located above the upper end surface of the second carrying block; a first connecting plate is connected between the upper ends of the first carrying blocks, a second connecting plate is connected between the lower ends of the second carrying blocks, the first connecting plate is fixed with the upper plate, the second connecting plate is fixed with the lower plate, and the second carrying blocks are not contacted with the first connecting plate all the time; the first carrying block is always positioned on the upper side of the second connecting plate.
4. The magnetic return neutral force detection device according to claim 1, wherein the lower end surface of the first carrier block has a cambered surface structure; or a yielding groove is formed on the lower end surface of the first carrying block or a contact surface contacted with the lower end surface of the first carrying block.
5. The magnetic return neutral force detection device according to claim 1, wherein a drag hook is fixed at the rear end of the upper plate; the draw hook comprises draw hook body and fixed block, the fixed block is fixed with the upper plate, the fixed block is formed with the holding tank, the fixed block upper end is equipped with the through groove that makes holding tank and external intercommunication, the draw hook body includes hook portion, is located the perpendicular portion of hook portion lower extreme, is located the spacing portion of perpendicular portion lower extreme, perpendicular portion is located through the inslot, spacing portion up end is the arc surface, through the inside diameter of the groove from bottom to top progressively increases, through the inside diameter of the groove lower extreme is greater than perpendicular portion external diameter, the holding tank roof constitute with spacing portion up end matched with arc surface.
6. The magnetic centering force detection device according to claim 5, wherein the number of the pulling hooks is one and is located in the middle of the upper plate, and the number of the carrying blocks on the left side of the pulling hooks is the same as the number of the carrying blocks on the right side of the pulling hooks.
7. The magnetic return neutral force detection device according to claim 1, wherein the upper plate and the lower plate are both matched with a level meter, the front end of the lower plate is provided with a second support column extending downwards, the second support column is in a bolt shape and is fixed with the lower plate through threads, and the rear end of the lower plate is erected on a support plate; the left side and the right side of the front end of the upper plate are respectively provided with a first supporting column, and the left side and the right side of the front end of the lower plate are respectively provided with a second supporting column.
8. The magnetic centering force detecting device according to claim 1, wherein the length of said upper plate is at least five times the length of the first carrier block in the front-rear direction.
9. The magnetic centering force detection device according to claim 1, wherein the lifting assembly comprises a screw rod module, the screw rod module is provided with a sliding block capable of moving up and down, a shell of the tension meter is fixed with the sliding block, and the tension meter is a digital display tension meter.
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|---|---|---|---|
| CN202110121845.6A CN112858968B (en) | 2021-01-28 | 2021-01-28 | Magnetic return neutral force detection device |
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| CN202110121845.6A CN112858968B (en) | 2021-01-28 | 2021-01-28 | Magnetic return neutral force detection device |
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| CN112858968B true CN112858968B (en) | 2024-05-28 |
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| CN111025207A (en) * | 2019-12-11 | 2020-04-17 | 中国科学院光电技术研究所 | Method and device for measuring static magnetic force |
| CN111443311A (en) * | 2020-06-02 | 2020-07-24 | 西安柯莱特信息科技有限公司 | Cantilever beam magnetic field sensor |
| CN214623005U (en) * | 2021-01-28 | 2021-11-05 | 浙江英洛华引力科技有限公司 | Magnetic force detection in return is with carrying thing mechanism |
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