CN114235370A - Device and method for measuring output precision of electromagnetic actuating mechanism - Google Patents
Device and method for measuring output precision of electromagnetic actuating mechanism Download PDFInfo
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- CN114235370A CN114235370A CN202111555677.8A CN202111555677A CN114235370A CN 114235370 A CN114235370 A CN 114235370A CN 202111555677 A CN202111555677 A CN 202111555677A CN 114235370 A CN114235370 A CN 114235370A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 38
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- 238000001514 detection method Methods 0.000 claims abstract description 20
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- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 claims 1
- 230000033001 locomotion Effects 0.000 abstract description 8
- 238000011056 performance test Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 14
- 238000012360 testing method Methods 0.000 description 5
- 238000007493 shaping process Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
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- 125000003003 spiro group Chemical group 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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- G—PHYSICS
- 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
- G01L5/22—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers
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Abstract
The invention discloses a device and a method for measuring the output precision of an electromagnetic actuating mechanism, which relate to the field of performance test of the electromagnetic actuating mechanism, and the device comprises a fixed support, a double-thread force sensor and an adjusting component, wherein the fixed support comprises a first support plate and a second support plate, and the first support plate is used for mounting the electromagnetic actuating mechanism; the force sensor is positioned between the first support plate and the second support plate, and one detection end of the force sensor is used for being connected with an output shaft of the electromagnetic actuating mechanism; the adjusting assembly bag is connected with the other detection end of the force sensor. The method utilizes the device, mainly drives the adjusting component to act, keeps the electromagnetic actuating mechanism to act synchronously, and records the traction force value in real time according to the record of the force sensor. The measuring device and the method can measure the displacement of the electromagnetic actuating mechanism and the traction force value under the corresponding displacement in real time by utilizing the principle of spiral motion and combining a mechanical sensor so as to facilitate the detection and calibration operation of the electromagnetic actuating mechanism.
Description
Technical Field
The invention relates to the field of performance testing of electromagnetic actuating mechanisms, in particular to a device and a method for measuring output precision of an electromagnetic actuating mechanism.
Background
The electromagnetic actuating mechanism is mainly applied to a pilot operated safety valve, and adopts the current magnetic effect working principle to control electrification to generate traction force, and pulls a valve rod connected with a transmission part to execute the forced release function of the pilot operated safety valve. The electromagnetic actuating mechanism has wide application in nuclear power stations with extremely high safety standard requirements, after the electromagnetic actuating mechanism is used for a long time, due to the influence of environment and electromagnetism, the phenomenon of electromagnetic force drift or unmatched electromagnetic force and displacement can exist, so that the normal action of the electromagnetic actuating mechanism is influenced, if in a rated stroke, after the electromagnetic actuating mechanism is electrified, due to insufficient traction force, a valve cannot execute a forced release function in time, and overpressure of a loop system is caused, and even nuclear accidents can be caused.
Therefore, it is important to detect and calibrate the displacement and traction of the electromagnetic actuator in the measuring range. There is no prior art device and method that can measure the output accuracy (displacement and traction) of an electromagnetic actuator.
In view of this, the present application is specifically made.
Disclosure of Invention
The invention aims to provide a device and a method for measuring the output precision of an electromagnetic actuating mechanism, which can measure the displacement of the electromagnetic actuating mechanism and a traction force value under the corresponding displacement in real time by utilizing a spiral motion principle and combining a mechanical sensor so as to facilitate the detection and calibration operation of the electromagnetic actuating mechanism.
The embodiment of the invention is realized by the following steps:
in a first aspect, the device for measuring the output precision of the electromagnetic actuating mechanism comprises a fixed support, a double-thread force sensor and an adjusting assembly, wherein the fixed support comprises a first support plate and a second support plate, and the second support plate is used for mounting the electromagnetic actuating mechanism; the force sensor is positioned between the first support plate and the second support plate, and one detection end of the force sensor is used for being connected with an output shaft of the electromagnetic actuating mechanism; the adjusting component comprises an adjusting nut and a threaded connecting rod, one end of the threaded connecting rod is connected with the other detection end of the force sensor, the other end of the threaded connecting rod movably penetrates through the first supporting plate, the adjusting nut and the first supporting plate are rotatably matched with one side, away from the second supporting plate, of the first supporting plate, and the adjusting nut and the threaded connecting rod are matched with each other.
In an alternative embodiment, a dial is arranged on the side, away from the second support plate, of the first support plate, direction indicators are arranged on the adjusting nut, and the dials are coaxially distributed on the rotating circumference of the adjusting nut.
In an alternative embodiment, a bearing is provided in the inner bore of the dial, and the adjusting nut is interconnected with the inner ring of the bearing.
In alternative embodiments, the bearing may slide axially relative to the inner bore of the dial or the adjustment nut may slide axially relative to the inner bore of the bearing.
In an alternative embodiment, the pitch of the threaded connecting rod is an integer multiple of 0.5 mm.
In an alternative embodiment, the first fulcrum plate is provided with a limiting part for limiting the rotation of the threaded connecting rod.
In an optional embodiment, a connecting piece is arranged between the detection end of the force sensor and the output shaft of the electromagnetic actuating mechanism, the connecting piece comprises a connecting head and a connecting screw, one side of the connecting head is provided with a cavity for accommodating the end part of the output shaft, the other side of the connecting head is in threaded connection with the detection end of the force sensor, and one end of the connecting screw penetrates through the connecting head and extends into the cavity for connecting the end part of the output shaft.
In an alternative embodiment, the first support plate and the second support plate are arranged along a connecting line direction of two detection ends of the force sensor, and a seat plate is fixed between the first support plate and the second support plate and used for being installed on the rack.
In a second aspect, a method for measuring output accuracy of an electromagnetic actuator, which uses the above apparatus for measuring output accuracy of an electromagnetic actuator, includes:
s1: rotating the adjusting nut in a first rotational direction until the force sensor displays an output value;
s2: controlling the output shaft of the electromagnetic actuating mechanism to move towards the first direction while continuing to rotate the adjusting nut towards the first rotation direction, wherein the displacement distance of the control threaded connecting rod is equal to that of the output shaft;
s3: and recording the number of rotation turns of the adjusting nut and the force value of the force sensor in the process of each rotation turn according to a preset rule.
In an optional embodiment, before step S1, the method further includes rotating the adjusting nut in the second rotation direction to make the adjusting nut be a first distance away from the first supporting plate, and after controlling the output shaft of the electromagnetic actuator to move the first distance in the second direction, clearing the force value of the force sensor.
The embodiment of the invention has the beneficial effects that:
according to the device and the method for measuring the output precision of the electromagnetic actuating mechanism, the threaded connecting rod is controlled to move by rotating the adjusting nut, namely, the linear displacement of the electromagnetic actuating mechanism is controlled by adopting high-precision spiral motion, and the traction force of the electromagnetic actuating mechanism at the moment can be obtained in real time by combining the recorded numerical value of the force sensor under each section of displacement, so that the comparison and judgment with the calibrated traction force are facilitated, and the performance detection and calibration operation of the electromagnetic actuating mechanism are facilitated.
Generally, the device and the method for measuring the output precision of the electromagnetic actuating mechanism have the characteristics of convenience and rapidness in operation and accuracy in measurement, and can calibrate the traction force and the displacement of the electromagnetic actuating mechanism at any time, so that the reliability and the safety of equipment are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic front view of a measuring device according to an embodiment of the present invention;
fig. 2 is a left side view schematically illustrating a measuring apparatus according to an embodiment of the present invention.
Icon: 1-adjusting the nut; 2-a bearing; 3-fixing the bracket; 4-a threaded connecting rod; 5-a force sensor; 6-a connector; 7-a connection screw; 80 hexagonal nuts; 9-hexagon socket head cap screw; 10-an electromagnetic actuator; 11-a gantry; 12-dial.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
Referring to fig. 1 and fig. 2, the device for measuring the output accuracy of the electromagnetic actuator according to the present embodiment can be used for measuring displacement and traction force parameters of an electromagnetic telescopic device, such as an electromagnetic actuator in a pilot safety valve of a nuclear power plant, to measure the displacement and traction force of the electromagnetic actuator within a measurement range, and verify the output accuracy and performance of the electromagnetic actuator.
This measuring device includes fixed bolster 3, force sensor 5 and the adjusting part of double-end screw thread formula, fixed bolster 3 includes first extension board and second extension board, the second extension board is used for installing electromagnetism actuating mechanism 10, in this embodiment, in order to guarantee that fixed bolster 3 possesses higher support stability and support intensity, be fixed with the bedplate between first extension board and the second extension board, fixed mode can be integrated into one piece, like integrated weld shaping, integrated roll shaping or integrated cladding shaping etc. the bedplate passes through hexagon socket head cap screw 9 and installs on rack 11, rack 11 is as whole measurement process's support basis, can bear the pulling force of electromagnetism actuating mechanism 10 and adjusting part better, its higher stability of placing has directly ensured fixed bolster 3's installation stability, thereby be convenient for follow-up carry out the high accuracy measurement experiment.
The force sensor 5 is positioned between the first support plate and the second support plate, the first support plate and the second support plate are arranged along the connecting line direction of the two detection ends of the force sensor 5, the first support plate and the second support plate are approximately positioned on the same straight line, and the precision of subsequent linear displacement can be ensured on the premise of relatively simplifying the structure. One detection end of the force sensor 5 is used for being connected with an output shaft of the electromagnetic actuator 10, the connection mode can be direct connection or intermediate connection, but in order to ensure the connection stability of the two, a connecting piece is arranged between the detection end of the force sensor 5 and the output shaft of the electromagnetic actuator 10.
This connecting piece includes connector 6 and connecting screw 7, and 6 one sides of connector have and be used for holding the cavity of output shaft tip, opposite side and force sensor 5's sense terminal spiro union, specifically, for example connector 6 can be a U type body, and its U type groove is direct and the interlock of output shaft tip, and the dorsal part shaping in middle part of the U type body has the connector, the connector with the mutual spiro union of sense terminal can, two tip processing at the U type body have the screw simultaneously, 7 one end of connecting screw passes in two fall-offs and the cavity of U type on the connector 6 to directly be used for connecting the screw through-hole of output shaft tip, wear to establish the completion back at connecting screw 7, its both ends are screwed up respectively and are had hexagon nut 8, through the connecting piece that sets up this form, not only the dismouting is convenient, firm in connection moreover, is applicable to the high accuracy measurement operation very much.
The adjusting component comprises an adjusting nut 1 and a threaded connecting rod 4, one end of the threaded connecting rod 4 is connected with the other detection end of the force sensor 5, and the connection mode can adopt a threaded connection. The other end of the threaded connecting rod 4 movably penetrates through the first support plate, wherein the movable penetration means that the threaded connecting rod can penetrate through the first support plate along the axial direction of the threaded connecting rod 4 and can freely move in the axial direction, the adjusting nut 1 is in rotatable fit with one side, away from the second support plate, of the first support plate, the rotatable fit means that the adjusting nut 1 is mounted on the first support plate or can be in contact with the first support plate and can rotate relative to the first support plate, for example, the adjusting nut 1 is in shaft-type rotatable fit directly through a hole or is connected through other rotating components, and the adjusting nut 1 is matched with the threaded connecting rod 4. On the premise that the threaded connecting rod 4 has rotational constraint, the adjusting nut 1 is rotated to cause axial displacement with at least one of the threaded connecting rod 4, wherein the axial direction mainly refers to the axial direction of the threaded connecting rod 4.
The above-mentioned rotational constraint may be a limiting protrusion or a limiting groove, and may form motion interference in the circumferential direction of the threaded connection rod 4, so as to avoid the threaded connection rod 4 from rotating synchronously with the adjustment nut 1, in this embodiment, the first support plate is provided with a limiting portion for limiting the rotation of the threaded connection rod 4, the limiting portion is a protrusion, the threaded connection rod 4 is processed with a groove or a flat groove arranged along the axial direction thereof, that is, a part of the rod body of the threaded connection rod is processed into a flat form, so that the cross section of the threaded connection rod is in a non-circular form (a part of the threaded connection rod is cut along a certain chord direction), the protrusion is limited in the groove or the flat groove, so as to prevent the threaded connection rod 4 from rotating with the adjustment nut 1 when moving in the horizontal direction, and the design form of this constraint is simple and reliable.
Through above technical scheme, can utilize adjusting nut 1's rotation, drive threaded connection rod 4 and remove, control electromagnetic actuator 10's output shaft synchronous motion, just can combine force sensor 5 to the numerical value of the corresponding traction force of record under every section displacement to be convenient for follow-up detection and calibration operation.
In order to ensure the rotation precision of the adjusting nut 1, a dial 12 is arranged on one side of the first support plate, which is far away from the second support plate, the dial 12 can be fixed on the side wall of the first support plate through a fastener (such as a hexagon socket head cap screw 9), and a positioning groove can also be arranged on the first support plate, so that the dial 12 can be better embedded on the first support plate. The direction indicator arranged on the adjusting nut 1 can be a convex object or a spray coating formed on the adjusting nut 1, the rotating circumference dial 12 of the adjusting nut 1 is coaxially distributed, namely, the circumference of the adjusting nut 1 driving the direction indicator to rotate is represented, and the scale circumferences of the dial 12 can be positioned on the same axis, so that the final rotating position of the adjusting nut 1 can be accurately indicated, and the rotating angle can be conveniently calculated.
When the adjusting nut 1 rotates for one circle, the threaded connecting rod 4 is displaced by one thread pitch of the adjusting nut 1 in the horizontal direction, and the corresponding relation between the displacement of the electromagnetic actuating mechanism 10 and a force value can be accurately measured by combining the force sensor 5. In order to facilitate the subsequent calculation of the whole measurement result, the thread pitch of the threaded connecting rod 4 is an integral multiple of 0.5mm, such as 0.5mm, 1mm and 2mm … …, taking 1mm as an example, the electromagnetic actuator 10 can displace 1mm when the adjusting nut is rotated for 1 circle, taking the 1mm as a segment, and the statistical data can facilitate the calculation of the change law of the traction force under each displacement, and also facilitate the control of the measuring range in the simulation of the actual operation.
In addition, be provided with bearing 2 in the hole of calibrated scale 12, for example thrust ball bearing, adjusting nut 1 and the inner circle interconnect of bearing 2 show that adjusting nut 1 passes through bearing and calibrated scale 12 (first extension board) rotatable fit promptly for adjusting nut 1 is rotatory more laborsaving, and the power value test is more convenient. In order to facilitate error calibration in the subsequent measurement process (i.e., the test is performed after an error section of the tested object is eliminated during the test), the bearing 2 may axially slide relative to the inner hole of the dial 12 or the adjusting nut 1 may axially slide relative to the inner hole of the bearing 2, that is, a space in which two parts can relatively slide exists between the bearing 2 and the dial 12 or between the adjusting nut 1 and the bearing 2 is indicated, which is mainly used to form a certain distance between the adjusting nut 1 and the first supporting plate in advance during the test, so that an error occurs in the displacement statistics after the electromagnetic actuator 10 performs relative displacement, and is specifically explained in the subsequent method embodiment.
For example, when the bearing 2 and the inner hole of the scale 12 slide relatively, a limiting member may be disposed on the outer edge of the inner hole of the scale 12 to prevent the bearing 2 from being separated, and similarly, when the adjusting nut 1 and the inner hole of the bearing 2 slide relatively, a limiting member may be disposed on the outer edge of the inner hole of the bearing 2 to prevent the adjusting nut 1 from being separated. When the adjusting nut 1 is rotated in one direction, the adjusting nut can move towards one side away from the first support plate, the threaded connecting rod 4 (with larger motion resistance) is kept still, when the adjusting nut 1 is rotated in the direction until the adjusting nut is tightly attached to the first support plate, the adjusting nut 1 does not perform linear displacement any more, and the threaded connecting rod 4 starts to move.
The embodiment also provides a method for measuring the output accuracy of the electromagnetic actuator, which is implemented by means of the above-mentioned device for measuring the output accuracy of the electromagnetic actuator, and the method for measuring the output accuracy of the electromagnetic actuator here is just a minimum complete technical solution that can achieve the purpose of measurement in the above description.
Specifically, the method comprises the following steps: s1: the adjusting nut 1 is rotated in the first direction of rotation until the force sensor 5 indicates an output value. In this case, the first rotation direction may be clockwise, the adjusting nut 1 is pressed against the first plate or the scale 12 of the first plate, the threaded connection rod 4 has a tendency to displace, the force sensor 5 is pulled or pressed and starts to display the value of the traction force, for example, when the displayed value of the traction force is F (F >0), the step S2 is performed.
S2: while continuing to rotate the adjusting nut 1 in the first rotation direction (clockwise direction), the output shaft of the electromagnetic actuator 10 is controlled to move in the first direction, where the first direction refers to the actual moving direction of the threaded connection rod 4, and the displacement distance of the threaded connection rod 4 is equal to the displacement distance of the output shaft, and preferably is performed synchronously, that is, when the adjusting nut 1 rotates, the threaded connection rod 4 makes linear motion, and at this time, an action signal is continuously given to the electromagnetic actuator 10, and the output shaft thereof keeps moving synchronously by the same displacement, because the linear distance of the threaded connection rod 4 is the pitch of the adjusting nut 1 when the adjusting nut 1 rotates one cycle, the state is clearly known, and when the output shaft of the electromagnetic actuator 10 has the same displacement, the corresponding traction force value can be recorded, that is, step S3 is performed.
S3: and recording the number of rotation turns of the adjusting nut 1 and the force value of the force sensor 5 in the process of each rotation turn according to a preset rule. The preset rule can be that, for example, the adjusting nut 1 rotates a circle, the threaded connection rod 4 displaces 1mm, and when the output shaft of the electromagnetic actuating mechanism 10 displaces 1mm, the force value can be recorded once, and if the displacement of the output shaft of the electromagnetic actuating mechanism 10 exceeds 1mm, the force value changes and increases suddenly, so that the displacement synchronism of the two is required to be ensured, and the accuracy of the force value recorded in the process of each rotation circle number can be ensured. Of course, the manner of controlling the synchronous movement may be realized by a high-precision detection sensor. Finally, the force values recorded in the process of each rotation number are counted and compared for analysis, and whether the electromagnetic actuating mechanism 10 needs to be calibrated or not is judged.
In addition, in order to ensure that the output shaft of the electromagnetic actuator 10 can perform the measurement operation at the initial position of the specified measuring range and also ensure that the force sensor 5 can perform accurate measurement, and eliminate the error that the force value measurement is inaccurate after the output shaft of the electromagnetic actuator 10 moves, before step S1, the method further includes rotating the adjusting nut 1 in the second rotation direction (counterclockwise direction), so that the adjusting nut 1 can have a first distance from the first supporting plate, where the first distance may be formed by axial sliding of the bearing 2 relative to the inner hole of the dial 12 or axial sliding of the adjusting nut 1 relative to the inner hole of the bearing 2, and then controlling the output shaft of the electromagnetic actuator 10 to move in the second direction (opposite to the first direction) by the first distance, and then resetting the force value of the force sensor 5.
By the above technical solution, taking the direction of fig. 1 as an example for illustration, the adjusting nut 1 rotates counterclockwise and moves towards the left side by the first distance Smm, then the output shaft of the electromagnetic actuator 10 is controlled to move towards the right side by the first distance Smm, at this time, the adjusting nut 1 contacts with the first supporting plate or the dial 12, at this time, the force sensor 5 may have a certain reading, in order to avoid the reading interfering with subsequent measurement, after the output shaft of the electromagnetic actuator 10 moves to the right (the initial position of the designated range), the force value of the force sensor 5 needs to be cleared, then step S1 is performed, the traction force of the output shaft of the electromagnetic actuator 10 can be measured at the initial point of the specific position, and the force value displayed by the force sensor 5 is more accurate, so as to obtain reliable measurement data finally, especially in the operation field of the electromagnetic actuator 10 in the pilot operated safety valve of the nuclear power plant, the displacement of the output shaft and the traction force after the displacement are directly related to the safety of the whole operation, so the error calibration step before the measurement is needed.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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. It should be noted that structures or components illustrated in the drawings are not necessarily drawn to scale, and descriptions of well-known components and processing techniques and procedures are omitted to avoid unnecessarily limiting the invention.
Claims (10)
1. An apparatus for measuring output accuracy of an electromagnetic actuator, comprising:
the electromagnetic actuator comprises a fixed support, a first support plate and a second support plate, wherein the second support plate is used for mounting an electromagnetic actuator;
the double-thread type force sensor is positioned between the first support plate and the second support plate, and one detection end of the force sensor is used for being connected with an output shaft of the electromagnetic actuating mechanism;
the adjusting part, the adjusting part includes adjusting nut and threaded connection pole, threaded connection pole one end with another sense terminal of force sensor is connected, just the activity of the threaded connection pole other end passes first extension board, adjusting nut with first extension board is kept away from one side rotatable coupling of second extension board, just adjusting nut with threaded connection pole is mutually supported.
2. The device for measuring the output accuracy of the electromagnetic actuator according to claim 1, wherein a dial is disposed on a side of the first support plate away from the second support plate, a direction indicator is disposed on the adjusting nut, and the dial is coaxially distributed around the rotation circumference of the adjusting nut.
3. The electromagnetic actuator output accuracy measuring device of claim 2, wherein a bearing is disposed in the inner bore of the dial, and the adjusting nut is interconnected with an inner ring of the bearing.
4. An electromagnetic actuator output accuracy measuring device according to claim 3, wherein said bearing is axially slidable relative to an inner bore of said dial or said adjusting nut is axially slidable relative to an inner bore of said bearing.
5. The apparatus of claim 2, wherein the pitch of the threaded connecting rod is an integer multiple of 0.5 mm.
6. The apparatus of claim 1, wherein the first support plate is provided with a limiting portion for limiting rotation of the threaded connecting rod.
7. The device for measuring the output accuracy of the electromagnetic actuator according to claim 1, wherein a connecting piece is arranged between the detection end of the force sensor and the output shaft of the electromagnetic actuator, the connecting piece comprises a connecting head and a connecting screw, one side of the connecting head is provided with a cavity for accommodating the end part of the output shaft, the other side of the connecting head is in threaded connection with the detection end of the force sensor, and one end of the connecting screw penetrates through the connecting head and extends into the cavity for connecting the end part of the output shaft.
8. The apparatus of claim 1, wherein the first and second support plates are arranged along a line connecting the two detection ends of the force sensor, and a seat plate is fixed between the first and second support plates and is configured to be mounted on a rack.
9. A method for measuring output accuracy of an electromagnetic actuator, wherein the apparatus for measuring output accuracy of an electromagnetic actuator according to any one of claims 1 to 8 is used, the method comprising:
s1: rotating said adjusting nut in a first rotational direction until said force sensor displays an output value;
s2: the output shaft of the electromagnetic actuating mechanism is controlled to move towards the first direction while the adjusting nut continues to rotate towards the first rotating direction, wherein the displacement distance of the threaded connecting rod is controlled to be equal to that of the output shaft;
s3: and recording the number of rotation turns of the adjusting nut and the force value of the force sensor in the process of each number of rotation turns according to a preset rule.
10. The apparatus of claim 9, further comprising, before step S1, rotating the adjusting nut in a second rotational direction to move the adjusting nut a first distance away from the first support plate, and after controlling the output shaft of the electromagnetic actuator to move the first distance in a second direction, clearing the force value of the force sensor.
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| CN202111555677.8A CN114235370B (en) | 2021-12-17 | 2021-12-17 | Measuring device and method for output precision of electromagnetic actuating mechanism |
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| CN202111555677.8A CN114235370B (en) | 2021-12-17 | 2021-12-17 | Measuring device and method for output precision of electromagnetic actuating mechanism |
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