CN219608285U - Two-dimensional shaft pin type magnetostriction force measuring system - Google Patents
Two-dimensional shaft pin type magnetostriction force measuring system Download PDFInfo
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- CN219608285U CN219608285U CN202320537879.8U CN202320537879U CN219608285U CN 219608285 U CN219608285 U CN 219608285U CN 202320537879 U CN202320537879 U CN 202320537879U CN 219608285 U CN219608285 U CN 219608285U
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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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Abstract
The utility model provides a two-dimensional shaft pin type magnetostriction force measuring system, and relates to the technical field of force measuring sensors. The system comprises: the device comprises a shaft pin outer sleeve, a magnetic core, an excitation coil, a detection coil and a data processing circuit; the shaft pin outer sleeve is hollow and is provided with a single-end opening, and a cross-shaped groove is formed in the shaft pin outer sleeve; the magnetic core is arranged in the shaft pin outer sleeve; the exciting coil is wound in the middle of the magnetic core; two groups of tentacles are arranged on the magnetic core, each group of tentacles comprises four protruding parts, the extending directions of the four protruding parts are cross-shaped, the protruding parts are embedded into the grooves, a plurality of planes are arranged on the outer cylindrical surface of the shaft pin outer sleeve, and the extending directions of the planes are consistent with the extending directions of the bottom surfaces of the grooves; each protruding part is respectively wound with a detection coil, and two detection coils in the same stress direction of the shaft pin outer sleeve are connected in series. According to the system, the cross-shaped protruding part and the detection coil are arranged on the magnetic core, so that the tensile force or the compressive force of the shaft pin in two dimensional directions can be detected, and the application range of the force measuring system is expanded.
Description
Technical Field
The utility model relates to the technical field of force sensors, in particular to a two-dimensional shaft pin type magnetostriction force measuring system.
Background
The shaft pin type force measuring system or the shaft pin sensor is applied to hoisting and traction equipment, can play a role of connecting the shaft pin, and can also measure the bearing capacity of the equipment.
However, the conventional pin sensor can only detect the stress condition in one direction, and cannot realize two-dimensional force measurement.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide a two-dimensional shaft pin type magnetostriction force measuring system so as to solve the two-dimensional force measuring problem of the shaft pin type force measuring system.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides a two-dimensional shaft pin type magnetostriction force measuring system, which comprises: the device comprises a shaft pin outer sleeve, a magnetic core, an excitation coil, a detection coil and a data processing circuit;
the shaft pin outer sleeve is hollow and is provided with a single end opening, and a cross-shaped groove is formed in the shaft pin outer sleeve;
the magnetic core is arranged inside the shaft pin outer sleeve;
the exciting coil is wound in the middle of the magnetic core and is used for generating an exciting magnetic field;
the magnetic core is provided with two groups of tentacles, the two groups of tentacles are respectively arranged at two ends of the magnetic core, each group of tentacles in the two groups of tentacles comprises four protruding parts, the extending directions of the four protruding parts in each group of tentacles are cross-shaped, the protruding parts are embedded into grooves in the shaft pin outer sleeve, the cambered surfaces of the protruding parts are tightly attached to the inner surface of the shaft pin outer sleeve, the outer cylindrical surface of the shaft pin outer sleeve is provided with a plurality of planes, the positions of the planes correspond to the positions of the protruding parts, and the extending directions of the planes are consistent with the extending directions of the bottom surfaces of the grooves;
each protruding part is respectively wound with a detection coil, and two detection coils in the same stress direction of the shaft pin outer sleeve are connected in series;
the data processing circuit is used for calculating the force value born on the shaft pin outer sleeve according to the induction voltage of the detection coil.
Optionally, an extending direction of at least one plane of the plurality of planes is perpendicular to a stress direction of the pin housing.
Alternatively, the corresponding two detection coils on the two protrusions having opposite extending directions among the four protrusions in each of the groups of tentacles are connected in opposite phases, and the connection point of the opposite phase connection is connected with the inverting input terminal of the amplifier of the data processing circuit.
Optionally, when the magnetic core is in the installation position, one end of the magnetic core, which is close to the opening of the shaft pin outer sleeve, is fixedly connected with a wire outlet joint part, and the shape of the wire outlet joint part is matched with that of the opening of the shaft pin outer sleeve.
Optionally, the system further comprises a circuit switching board, wherein the circuit switching board is fixedly arranged between the outgoing line joint part and the magnetic core, and the data processing circuit is arranged on the circuit switching board.
The beneficial effects of the utility model include:
the two-dimensional shaft pin type magnetostriction force measuring system provided by the utility model comprises: the device comprises a shaft pin outer sleeve, a magnetic core, an excitation coil, a detection coil and a data processing circuit; the shaft pin outer sleeve is hollow and is provided with a single end opening, and a cross-shaped groove is formed in the shaft pin outer sleeve; the magnetic core is arranged inside the shaft pin outer sleeve; the exciting coil is wound in the middle of the magnetic core and is used for generating an exciting magnetic field; the magnetic core is provided with two groups of tentacles, the two groups of tentacles are respectively arranged at two ends of the magnetic core, each group of tentacles in the two groups of tentacles comprises four protruding parts, the extending directions of the four protruding parts in each group of tentacles are cross-shaped, the protruding parts are embedded into grooves in the shaft pin outer sleeve, the cambered surfaces of the protruding parts are tightly attached to the inner surface of the shaft pin outer sleeve, the outer cylindrical surface of the shaft pin outer sleeve is provided with a plurality of planes, the positions of the planes correspond to the positions of the protruding parts, and the extending directions of the planes are consistent with the extending directions of the bottom surfaces of the grooves; each protruding part is respectively wound with a detection coil, and two detection coils in the same stress direction of the shaft pin outer sleeve are connected in series; the data processing circuit is used for calculating the force value born on the shaft pin outer sleeve according to the induction voltage of the detection coil. According to the system, the cross-shaped protruding part and the detection coil are arranged on the magnetic core, so that the tension or the pressure of the detection shaft pin in two dimensional directions can be realized, and the application range of the force measuring system is expanded.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIGS. 1A and 1B are schematic perspective views showing the structure of a pin housing of a two-dimensional pin magnetostrictive force measuring system according to an embodiment of the present utility model;
FIG. 2 is a schematic plan view of an open end of a pin housing according to an embodiment of the present utility model;
FIG. 3A illustrates a schematic side view of a pin wrap provided in an embodiment of the present utility model;
FIG. 3B shows a cross-sectional view A-A in FIG. 3A;
FIG. 4 is a schematic perspective view of a magnetic core of a two-dimensional pin magnetostrictive force measuring system according to an embodiment of the present utility model;
FIG. 5 shows a schematic perspective view of a two-dimensional pin magnetostrictive force measurement system according to an embodiment of the present utility model;
FIG. 6A illustrates a side schematic view of a two-dimensional pin magnetostrictive force measurement system provided by an embodiment of the utility model;
FIG. 6B shows a cross-sectional view of C-C in FIG. 6A;
FIG. 6C shows a D-D cross-sectional view of FIG. 6A;
FIG. 6D shows a D-D cross-sectional view of FIG. 6A;
FIG. 7A is a schematic end plan view of a two-dimensional pin magnetostrictive force measurement system according to an embodiment of the utility model;
FIG. 7B shows a cross-sectional view of G-G of FIG. 7A;
FIG. 7C shows a cross-sectional view of F-F in FIG. 7A;
FIG. 8 shows a circuit diagram of the anti-phase connection of the detection coils of the two-dimensional axial pin magnetostrictive force measuring system provided by the embodiment of the utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The shaft pin type force measuring system or the shaft pin sensor is applied to hoisting and traction equipment, can play a role of connecting the shaft pin, and can also measure the bearing capacity of the equipment. The conventional pin sensor can only detect stress in one direction. Therefore, the utility model provides a two-dimensional shaft pin type magnetostriction force measuring system to solve the two-dimensional force measuring problem of the shaft pin type force measuring system.
FIGS. 1A and 1B are schematic perspective views showing the structure of a pin housing of a two-dimensional pin magnetostrictive force measuring system according to an embodiment of the present utility model; FIG. 2 is a schematic plan view of an open end of a pin housing according to an embodiment of the present utility model; FIG. 3A illustrates a schematic side view of a pin wrap provided in an embodiment of the present utility model; FIG. 3B shows a cross-sectional view A-A in FIG. 3A; FIG. 4 is a schematic perspective view of a magnetic core of a two-dimensional pin magnetostrictive force measuring system according to an embodiment of the present utility model; FIG. 5 shows a schematic perspective view of a two-dimensional pin magnetostrictive force measurement system according to an embodiment of the present utility model; FIG. 6A illustrates a side schematic view of a two-dimensional pin magnetostrictive force measurement system provided by an embodiment of the utility model; FIG. 6B shows a cross-sectional view of C-C in FIG. 6A; FIG. 6C shows a D-D cross-sectional view of FIG. 6A; FIG. 6D shows a D-D cross-sectional view of FIG. 6A; FIG. 7A is a schematic end plan view of a two-dimensional pin magnetostrictive force measurement system according to an embodiment of the utility model; FIG. 7B shows a cross-sectional view of G-G of FIG. 7A; FIG. 7C shows a cross-sectional view of F-F in FIG. 7A. The present utility model will be described in detail below with reference to fig. 1A to 7C.
The two-dimensional shaft pin type magnetostriction force measuring system provided by the utility model comprises a shaft pin outer sleeve 110, a magnetic core 120, an excitation coil 130, a detection coil and a data processing circuit.
The pin housing 110 is hollow and single ended, with a cross-shaped recess 111 formed in the interior of the pin housing 110, as shown in fig. 2. Fig. 1A and 1B are two end views of the pin housing 110, respectively. The pin housing 110 includes an open end 112 and a sealed end 113.
The pin housing 110 is a force bearing member having magnetic permeability and is made of carbon steel or martensitic, ferritic stainless steel.
In a two-dimensional pin magnetostrictive force system, a magnetic core 120 is mounted inside a pin housing 110. Fig. 4 shows a perspective view of the magnetic core 120 before being mounted inside the pin housing 110.
As shown in fig. 4, an exciting coil 130 is wound around the middle of the magnetic core 120 for generating an exciting magnetic field. The magnetic core 120 is provided with two groups of tentacles, the two groups of tentacles are respectively arranged at two ends of the magnetic core, and each group of tentacles in the two groups of tentacles comprises four protruding parts, and eight protruding parts are provided in total. The four protruding portions of each antenna set have a cross-shaped extending direction, when the magnetic core 120 is mounted inside the pin housing 110, the protruding portions are all embedded into the grooves inside the pin housing 110, and the cambered surfaces of the protruding portions cling to the inner surface of the pin housing, as shown in fig. 6B to 6D, and a plurality of planes, as shown in fig. 5, a first plane 161, a fourth plane 164, a fifth plane 171, and an eighth plane 174 are disposed on the outer cylindrical surface of the pin housing 110. The second plane (not shown in fig. 5) is opposite the fourth plane 164 and the third plane (not shown in fig. 5) is opposite the first plane 161; a seventh plane (not shown in fig. 5) is opposite the fifth plane 171 and a sixth plane (not shown in fig. 5) is opposite the eighth plane 174. The positions of the planes correspond to the positions of the protruding parts, and the extending directions of the planes are consistent with the extending directions of the bottom surfaces of the grooves; optionally, an extending direction of at least one plane of the plurality of planes is perpendicular to a stress direction of the pin housing. The shaft sleeve has directivity during installation, and the plane on the outer cylindrical surface is perpendicular to the stress direction of the shaft pin outer sleeve.
Each protruding part is respectively wound with a detection coil, as shown in fig. 4, and four protruding parts on the first group of contacts are respectively wound with a first detection coil 141, a second detection coil 142, a third detection coil 143 and a fourth detection coil 144; the four protruding portions on the second group of contacts are wound with a fifth detection coil 151, a sixth detection coil 152, a seventh detection coil 153, and an eighth detection coil 154, respectively. Two detection coils in the same stress direction of the pin housing 110 are connected in series, for example, a first detection coil 141 and a fifth detection coil 151 are connected in series to form a detection coil a, a third detection coil 143 and a seventh detection coil 153 opposite thereto are connected in series to form a detection coil B, a second detection coil 142 and a sixth detection coil 152 are connected in series to form a detection coil C, and a fourth detection coil 144 and an eighth detection coil 154 are connected in series to form a detection coil D. The first plane 161 and the fifth plane 171 are concentrated stress surfaces of the detection coil a, the second plane and the sixth plane are concentrated stress surfaces of the detection coil C, the third plane and the seventh plane are concentrated stress surfaces of the detection coil B, and the fourth plane 164 and the eighth plane 174 are concentrated stress surfaces of the detection coil D.
The data processing circuit is used for calculating the force value born by the pin housing 110 according to the induction voltage of the detection coil.
Optionally, when the magnetic core 120 is in the installation position, an outlet connector 121 is fixedly connected to an end (an open end 112) of the magnetic core 120, which is close to the opening of the pin housing 110, and the shape of the outlet connector 121 is matched with the shape of the opening of the pin housing.
Optionally, the system further includes a circuit adapter 122, as shown in fig. 4, where the circuit adapter 122 is fixedly disposed between the outlet connector 121 and the magnetic core 120, and the data processing circuit is disposed on the circuit adapter 122.
In use, the exciting magnetic field generated by the exciting coil 130 forms a closed magnetic circuit a through the middle part of the magnetic core 120, the first detecting coil 141 in the first group of tentacles, the shaft pin outer sleeve 110 and the fifth detecting coil 151 in the second group of tentacles, when the shaft sleeve is stressed according to the magnetostriction effect, the internal magnetic domains of the shaft sleeve change, the magnetic resistance of the closed magnetic circuit a changes, the magnetic flux changes, and the induced voltage in the detecting coil a changes, so that the force value born by the shaft pin sensor can be obtained according to the change of the voltage of the detecting coil a.
Alternatively, the corresponding two detection coils on the two protrusions having opposite extending directions among the four protrusions in each of the groups of tentacles are connected in opposite phases, and the connection point of the opposite phase connection is connected with the inverting input terminal of the amplifier of the data processing circuit. FIG. 8 shows a circuit diagram of the anti-phase connection of the detection coils of the two-dimensional axial pin magnetostrictive force measuring system provided by the embodiment of the utility model. The differential structure shown in fig. 8 is adopted, so that the system has a temperature self-compensation function.
The shaft pin type sensor bears shearing force when in operation, under the simultaneous actions of shearing and bending moment, the shaft sleeve (namely the shaft pin sleeve) has equal force on the protruding part corresponding to the detection coil A and the protruding part corresponding to the detection coil B, and the shaft sleeve is opposite in direction, one is tensile force, and the other is compressive force, so that when the shaft pin type sensor is stressed, the induction voltage of the detection coil A and the induction voltage of the detection coil B are equal in variation, opposite in direction and are a group of differential signals, and after the differential signals are reversely connected and amplified, a group of differential amplified signals are obtained, and the shaft sleeve has a temperature self-compensation function, and the circuit of FIG. 8 comprises the detection coil A, the detection coil B, the amplifier AA, the resistor R1 and the resistor R2. The induction voltages of the coils A and B are respectively V A And V B The output voltage of the operational amplifier is V O ，
V when the shaft pin sensor is not stressed A ＝V B The output voltage of the operational amplifier is V O When the pin sensor is stressed, the variation of the induced voltages of the two coils is V Af And V Bf The output voltages of the operational amplifier are equal in size and opposite in direction
As can be seen from the above, the variation of the coil induced voltage is amplifiedThe load force value data of the sensor is amplified, and the output voltage V O The tensile force is represented by positive values, and the compressive force is represented by negative values. And when the ambient temperature changes delta t, the induced voltage of the detection coil A and the induced voltage of the detection coil B are changed by delta v at the same time, and after differential signal amplification, the influence caused by temperature change is eliminated, namely the temperature self-compensation function is realized.
And if the connecting line of the detection coil A and the detection coil B is in the direction of the coordinate axis X, the connecting line of the detection coil C and the detection coil D is in the direction of the coordinate axis Y, and the detection coils C and D are connected in a differential mode, so that the stress condition of the axis pin type sensor in the direction of Y can be detected. The pin-type sensor can detect tensile force or compressive force in two directions simultaneously.
In summary, the system can realize the tension or the compression of the detection shaft pin in two dimension directions by arranging the cross-shaped protruding part and the detection coil on the magnetic core, and expands the application range of the force measuring system. In addition, the system has a temperature self-compensation function by adopting a detection coil differential inverse connection structure.
The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, but not limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.
Claims (5)
1. A two-dimensional pin magnetostrictive force measurement system, the system comprising: the device comprises a shaft pin outer sleeve, a magnetic core, an excitation coil, a detection coil and a data processing circuit;
the shaft pin outer sleeve is hollow and is provided with a single-end opening, and a cross-shaped groove is formed in the shaft pin outer sleeve;
the magnetic core is arranged inside the shaft pin outer sleeve;
the exciting coil is wound in the middle of the magnetic core and is used for generating an exciting magnetic field;
the magnetic core is provided with two groups of tentacles, the two groups of tentacles are respectively arranged at two ends of the magnetic core, each group of tentacles in the two groups of tentacles comprises four protruding parts, the extending directions of the four protruding parts in each group of tentacles are cross-shaped, the protruding parts are embedded into grooves in the shaft pin outer sleeve, the cambered surfaces of the protruding parts are tightly attached to the inner surface of the shaft pin outer sleeve, the outer cylindrical surface of the shaft pin outer sleeve is provided with a plurality of planes, the positions of the planes correspond to the positions of the protruding parts, and the extending directions of the planes are consistent with the extending directions of the bottom surfaces of the grooves;
each protruding part is respectively wound with a detection coil, and two detection coils in the same stress direction of the shaft pin outer sleeve are connected in series;
the data processing circuit is used for calculating the force value born on the shaft pin outer sleeve according to the induced voltage of the detection coil.
2. The two-dimensional pin magnetostrictive force measurement system according to claim 1, wherein at least one of the plurality of planes extends in a direction perpendicular to a force direction of the pin housing.
3. The two-dimensional pin magnetostrictive force measuring system according to claim 1, wherein the corresponding two detection coils on the two opposite extending protrusions of the four protrusions of each group of feelers are connected in opposite phase, and the connection point of the opposite phase connection is connected with the inverting input terminal of the amplifier of the data processing circuit.
4. The two-dimensional pin magnetostrictive force measurement system according to claim 1, wherein when the magnetic core is in the installed position, an outlet fitting is fixedly connected to an end of the magnetic core near the opening of the pin housing, and the outlet fitting has a shape matching the shape of the opening of the pin housing.
5. The two-dimensional pin magnetostrictive force measurement system according to claim 4, further comprising a circuit adapter plate fixedly disposed between the wire outlet joint and the magnetic core, wherein the data processing circuit is disposed on the circuit adapter plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320537879.8U CN219608285U (en) | 2023-03-20 | 2023-03-20 | Two-dimensional shaft pin type magnetostriction force measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320537879.8U CN219608285U (en) | 2023-03-20 | 2023-03-20 | Two-dimensional shaft pin type magnetostriction force measuring system |
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| Publication Number | Publication Date |
|---|---|
| CN219608285U true CN219608285U (en) | 2023-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320537879.8U Active CN219608285U (en) | 2023-03-20 | 2023-03-20 | Two-dimensional shaft pin type magnetostriction force measuring system |
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| Country | Link |
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| CN (1) | CN219608285U (en) |
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- 2023-03-20 CN CN202320537879.8U patent/CN219608285U/en active Active
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