CN111323704A - Magnetic coupling brake test device and method - Google Patents
Magnetic coupling brake test device and method Download PDFInfo
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- CN111323704A CN111323704A CN202010288627.7A CN202010288627A CN111323704A CN 111323704 A CN111323704 A CN 111323704A CN 202010288627 A CN202010288627 A CN 202010288627A CN 111323704 A CN111323704 A CN 111323704A
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- 238000010168 coupling process Methods 0.000 title claims abstract description 28
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 28
- 238000012360 testing method Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title description 5
- 230000005540 biological transmission Effects 0.000 claims abstract description 59
- 239000004020 conductor Substances 0.000 claims abstract description 48
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 230000003993 interaction Effects 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000013016 damping Methods 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000010998 test method Methods 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000033228 biological regulation Effects 0.000 abstract description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 8
- 239000010949 copper Substances 0.000 description 8
- 230000033001 locomotion Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/346—Testing of armature or field windings
-
- 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
- G01M13/02—Gearings; Transmission mechanisms
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/24—Devices for sensing torque, or actuated thereby
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/02—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type
- H02K49/04—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type
- H02K49/046—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type with an axial airgap
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
- H02K49/104—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element
- H02K49/108—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element with an axial air gap
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
The invention relates to a magnetic coupling brake test device, which comprises a bottom plate, a driving device, a transmission device and a braking device, wherein the driving device is arranged on the bottom plate; the driving device comprises a driving motor, and the driving motor is arranged on the bottom plate; the transmission device comprises a conductor disc and a permanent magnet disc, the conductor disc is fixedly arranged on an output shaft of the driving motor, the permanent magnet disc is rotatably arranged on the bottom plate, the permanent magnet disc is parallel to the end face of the conductor disc, and the coupling area of the permanent magnet disc and the conductor disc is larger than zero; the braking device comprises a braking plate, a braking transmission mechanism and a braking motor, wherein the braking plate is arranged in parallel to the permanent magnet disc, and the braking motor drives the braking plate to move through the braking transmission mechanism so as to change the coupling area of the braking plate and the permanent magnet disc; the device has simple structure, no mechanical connection between the load and the motor, almost no need of maintenance, and stepless speed regulation under the condition of unchanged rotating speed of the motor.
Description
Technical Field
The invention relates to the technical field of brake test devices, in particular to a magnetic coupling brake test device and method.
Background
The magnetic coupler is generally composed of a copper rotor, a permanent magnet rotor and a controller. During the working process, the copper rotor and the permanent magnet rotor are not mechanically connected to transmit torque in the past, an air gap exists between the copper rotor and the permanent magnet rotor, when the motor rotates, the copper rotor generates induced eddy current when cutting magnetic lines of force of the permanent magnet, the torque transmission between the motor and the working machine is realized by acting force between a magnetic field of the induced eddy current and a magnetic field of the permanent magnet, and the transmission torque and the rotating speed between the copper rotor and the permanent magnet rotor can be adjusted by adjusting the air gap between the copper rotor and the permanent magnet rotor. When in some work situations requiring sudden stop, the copper rotor and the permanent magnet rotor can not be in a static state quickly because the copper rotor and the permanent magnet rotor can continue to rotate due to inertia after the motor stops working, so a braking device is needed to stop the motor in the work situations requiring sudden stop.
Disclosure of Invention
Aiming at the technical problem, the magnetic coupling brake test device is provided for testing the brake performance of the magnetic coupling brake.
In order to solve the technical problems, the invention adopts the technical scheme that:
a magnetic coupling brake test device comprises a bottom plate, a driving device, a transmission device and a braking device; the driving device comprises a driving motor and a motor frame, the driving motor is fixed on the motor frame, and the motor frame is arranged on the bottom plate;
the transmission device comprises a conductor disc, a permanent magnet disc, a transmission shaft and a load, wherein the conductor disc is coaxially and fixedly arranged on an output shaft of the driving motor; one end of the transmission shaft is fixedly connected with the permanent magnet disc, the other end of the transmission shaft is connected with a load, a bearing mounting plate is fixedly arranged on the bottom plate, and the transmission shaft is rotatably arranged on the bearing mounting plate through a bearing;
the braking device comprises a braking plate, a braking transmission mechanism and a braking motor, wherein the braking plate is positioned in a movable space between the conductor disc and the permanent magnet disc, the braking motor drives the braking plate to move in the movable space through the braking transmission mechanism, when the axial overlapping area of the braking plate and the permanent magnet disc along the transmission shaft is larger than zero, the braking plate plays a braking role on the permanent magnet disc, and when the axial overlapping area of the braking plate and the permanent magnet disc along the transmission shaft is equal to zero, the braking plate does not have a braking role on the permanent magnet disc.
Further, the fixed slider that is provided with of motor frame downside, be provided with the guide rail mounting panel along the direction of driving motor output shaft on the bottom plate, the guide rail is fixed to be set up on the guide rail mounting panel, the fixed locating plate that is provided with on the guide rail mounting panel, the guide rail mounting panel passes through the locating plate to be fixed on the bottom plate, through the hookup location of adjustment locating plate and bottom plate, can change the angle between conductor dish and the permanent magnet dish, the slider slides and sets up on the guide rail, can control the size of transmission moment of torsion between conductor dish and the permanent magnet dish through the distance between slider control conductor dish and the permanent magnet dish.
Further, a push rod is fixedly arranged on the motor frame, one end of the push rod is connected with the motor frame, a push rod baffle for controlling the limit position of the conductor disc is fixedly arranged at the other end of the push rod, the minimum distance between the conductor disc and the permanent magnet disc is the minimum distance when the push rod baffle is abutted to the guide rail, and a displacement sensor for monitoring the moving position of the driving motor is arranged on the push rod baffle.
Furthermore, the permanent magnet disc comprises a plurality of pairs of permanent magnets, the permanent magnets are uniformly distributed on the permanent magnet disc in the radial direction, and magnetic poles are alternately distributed in an N pole and an S pole.
Furthermore, the device also comprises a torque and rotating speed sensor, one end of the torque and rotating speed sensor is fixedly connected with the transmission shaft, the other end of the torque and rotating speed sensor is fixedly connected with the input end of the load, and the size of the transmission torque of the transmission shaft can be monitored in real time through the torque and rotating speed sensor.
Furthermore, the brake transmission mechanism comprises a lead screw and a threaded sleeve matched with the lead screw, the lead screw is rotatably connected with a bearing seat fixedly arranged on the bottom plate, one end of the lead screw is fixedly connected with an output shaft of the brake motor through a coupler, and the threaded sleeve is fixedly connected with the brake plate.
Furthermore, the number of the brake plates and the number of the threaded sleeves are two, the threaded sleeves correspond to the brake plates one by one, and the two brake plates are symmetrically arranged on two sides of the permanent magnet disc in the axial direction respectively; when the screw rod rotates, the two brake plates simultaneously move towards the middle of the axis of the permanent magnet disc or the two sides of the axis of the permanent magnet disc.
Furthermore, the braking plane of the braking plate is parallel to the working end face of the permanent magnet disc.
Another objective of the present invention is to provide a magnetic coupling braking test method, including the above magnetic coupling braking test apparatus, including the following steps:
s1: keeping the brake plate in an open state, enabling the axial overlapping area of the brake plate and the permanent magnet disc along the transmission shaft to be zero, and adjusting the distance between the conductor disc and the permanent magnet disc according to the required transmission torque;
s2: starting a driving motor to drive a conductor disc to rotate, generating relative rotation between the conductor disc and a permanent magnet disc, generating induced eddy current by cutting magnetic induction lines of the permanent magnet disc by the conductor disc, and enabling the permanent magnet disc to rotate by the interaction force between the induced eddy current and a magnetic field of the permanent magnet disc so as to drive a load to rotate;
s3: when the permanent magnet disc reaches the specified rotating speed, the driving motor is turned off, the braking motor is turned on, the braking plate moves towards the middle until the braking plate is turned off through the matching of the screw rod and the threaded sleeve, at the moment, the conductor disc and the permanent magnet disc are separated by the braking plate, the coupling area between the braking plate and the permanent magnet disc is the largest, relative motion exists between the permanent magnet disc and the braking plate, and because the braking plate cannot rotate, damping torque is generated on the permanent magnet disc, the inertial rotation of the permanent magnet disc is prevented, and the braking purpose is achieved; and finally, the transmission characteristics are obtained by measuring the load torque and the rotating speed of the transmission.
Compared with the prior art, the invention has the beneficial effects that;
1. the permanent magnet disc can be gently braked through the interaction between the braking plate and the permanent magnet disc, and the braking time is shortened.
2. Compared with a conventional braking device, the braking plate of the magnetic coupling braking device is not in direct contact with the rotating part, the service life of the driving motor cannot be influenced by the vibration of the load, the device almost does not need later maintenance, and the maintenance cost is extremely low.
3. The stepless regulation of the output rotating speed can be realized under the condition that the rotating speed of the driving motor is not changed.
4. The structure is simple, and large centering errors are allowed.
5. Through the connected position of adjustment locating plate and bottom plate, can change the angle between conductor dish and the permanent magnet dish, can test the transmission performance of conductor dish under different angles.
6. In the braking process, keep away from the permanent magnet dish through push rod drive conductor dish, reduce the drive effect to the permanent magnet dish, in addition, the braking plate removes between conductor dish and the permanent magnet dish, has cut off the drive effect of conductor dish to the permanent magnet dish, and the braking plate is to braking because inertia pivoted permanent magnet dish simultaneously for the permanent magnet dish stops fast, has reduced inertial influence, and braking effect is good.
7. The brake motor and the brake transmission mechanism can realize simultaneous movement of the two brake plates, so that the brake plates can move rapidly, the size of the axial overlapping area of the brake plates and the permanent magnet disc can change more rapidly, and the brake time of the brake plates to the permanent magnet disc is shortened.
Drawings
FIG. 1 is a front view of the brake test apparatus of the present invention;
FIG. 2 is a top view of the brake test apparatus of the present invention;
fig. 3 is a schematic overall structure diagram of the braking test device of the invention.
In the figure: the device comprises a base plate 10, a driving motor 11, a motor frame 12, a sliding block 13, a guide rail 14, a push rod 15, a push rod baffle 16, a displacement sensor 17, a conductor disc 21, a permanent magnet disc 22, a transmission shaft 23, a connecting sleeve I24, a connecting sleeve II 25, a bearing mounting plate 26, a brake plate 31, a brake motor 32, a lead screw 33, a threaded sleeve 34, a bearing seat 35, a coupler 36, a fan 40, a guide rail mounting plate 41 and a positioning plate 42.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
As shown in fig. 1 to 3: a magnetic coupling brake test device comprises a bottom plate 10, a driving device, a transmission device and a braking device;
drive arrangement includes driving motor 11 and motor frame 12, driving motor 11 is fixed to be set up on motor frame 12, the fixed slider 13 that is provided with of motor frame 12 downside, be provided with the guide rail mounting panel along the direction of driving motor 11 output shaft on bottom plate 10, guide rail 14 is fixed to be set up on conductor mounting panel 41, the fixed locating plate 42 that is provided with on the guide rail mounting panel 41, guide rail 14 passes through locating plate 42 to be fixed on the bottom plate, through the hookup location of adjustment locating plate 42 and bottom plate, can change the angle between conductor dish 21 and the permanent magnet dish 22, driving motor 11 accessible slider 13 slides along guide rail 14.
Still be fixed with push rod 15 on the motor frame 12 for promote driving motor 11 and be linear motion, push rod 15 one end is connected with motor frame 12, and push rod 15 other end is fixed and is provided with the push rod baffle 16 of controlling driving motor 11 extreme position, is the minimum distance between conductor dish 21 and the permanent magnet dish 22 when push rod baffle 16 and guide rail are inconsistent, installs the displacement sensor 17 of monitoring driving motor 11 shift position on the push rod baffle 16.
The transmission device comprises a conductor disc 21, a permanent magnet disc 22 and a transmission shaft 23, wherein the conductor disc 21 is fixedly connected to an output shaft of the driving motor 11 through a connecting sleeve I24, the permanent magnet disc 22 is connected with one end of the transmission shaft 23 through a connecting sleeve II 25, and the transmission shaft 23 is rotatably arranged on a bearing mounting plate 26 through a bearing.
The permanent magnet disc comprises a plurality of pairs of permanent magnets with the same size, the permanent magnets are uniformly distributed on the permanent magnet disc in a radial mode, and magnetic poles are alternately distributed in an N pole mode and an S pole mode.
When the driving motor 11 drives the conductor disc to rotate, a magnetic induction line cutting phenomenon can occur, induced eddy current can be formed between the conductor disc and the permanent magnet disc, and torque is transmitted through the interaction force between the conductor disc and the permanent magnet disc so as to drive the permanent magnet disc to rotate; when the moving push rod 15 changes the distance between the conductor disc and the permanent magnet disc, the magnetic field intensity changes, the interaction force changes, and further the transmitted torque also changes, so that the rotating speed of the transmission shaft 23 can be adjusted by adjusting the air gap between the conductor disc and the permanent magnet disc.
The braking device comprises a braking plate 31, a braking transmission mechanism and a braking motor 32, wherein the braking plate 31 is arranged in parallel to the permanent magnet disc 22, the braking motor 32 drives the braking plate 31 to move through the braking transmission mechanism so as to change the coupling area between the braking plate 31 and the permanent magnet disc 22, the braking transmission mechanism comprises a lead screw 33 and a threaded sleeve 34 matched with the lead screw, the lead screw 33 is rotatably connected with a bearing seat 35 fixedly arranged on a bottom plate, one end of the lead screw 33 is fixedly connected with an output shaft of the braking motor 32 through a coupler 36, the braking plate 31 comprises two braking plates 31 symmetrically arranged on two sides of the permanent magnet disc 22, and the two threaded sleeves 34 are respectively and fixedly arranged on the two braking plates 31; the spiral lines of the threads at the left end and the right end of the screw rod 33 are opposite in direction and equal in length, the spiral lines at the two ends are symmetrical about the middle point, the spiral lines of the two thread sleeves 34 are identical in direction, and when the screw rod 33 rotates, the two brake plates 31 move towards the middle or the two sides simultaneously; when the device needs to be stopped, the brake motor 32 enables the two brake plates 31 to simultaneously move towards the middle through the screw rod 33, so that the brake plates 31 are closed towards the middle, and the brake plates 31 brake the permanent magnet disc 22; when the brake is not needed, the brake motor 32 drives the screw 33 to open the two brake plates 31 to both sides, and at this time, the coupling area between the brake plates 31 and the permanent magnet disc 22 is zero, and there is no interaction.
The end of the drive shaft 23 not connected to the permanent magnet disc 22 may be connected to a fan 40 to observe changes in the speed of rotation of the drive shaft 23.
The end of the transmission shaft 23 not connected with the permanent magnet disc 22 can also be connected with a load and torque rotating speed sensor to detect the torque transmitted by the transmission shaft.
The coupling area of the brake plate and the permanent magnet disc is the axial coincidence area of the brake plate and the permanent magnet disc along the transmission shaft.
The two ends of the screw rod of the invention adopt threads with the same rotating direction, and the two thread sleeves adopt threads with opposite rotating directions, so that the aim of the invention can be achieved.
The brake test operating method is as follows:
when the permanent magnet disc 22 needs to be accelerated, the brake plate 31 is in an open state, the axial overlapping area of the brake plate and the permanent magnet disc is zero, the interval between the conductor disc 21 and the permanent magnet disc 22 is adjusted through the push rod 15 according to the required transmission torque, the driving motor 11 is started to drive the conductor disc 21 to rotate, the conductor disc 21 and the permanent magnet disc 22 rotate relatively, the conductor disc 21 generates induced eddy current when cutting the magnetic line of force of the permanent magnet disc 22, and the permanent magnet disc 22 rotates under the action of the interaction force between the magnetic field of the induced eddy current and the magnetic field of the permanent magnet disc 22, so that the load is driven to move;
when the permanent magnet disc 22 needs to be braked, the conductor disc 21 is moved away from the permanent magnet disc 22 through the push rod 15; the brake motor 32 is turned on, the brake plate 31 is moved to the middle to be in a closed state through the matching of the screw rod 33 and the threaded sleeve 34, namely the brake plate separates the conductor disc 21 from the permanent magnet disc 22, the coupling area between the brake plate 31 and the permanent magnet disc 22 is the largest, at the moment, because the brake plate 31 is not moved, relative motion exists between the permanent magnet disc 22 and the brake plate 31, damping torque is generated, inertial rotation of the permanent magnet disc 22 is prevented, and the purpose of braking is achieved; and finally, the transmission characteristics are obtained by measuring the load torque and the rotating speed of the transmission.
Although only the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and all changes are encompassed in the scope of the present invention.
Claims (9)
1. The utility model provides a magnetic coupling braking test device which characterized in that: comprises a bottom plate, a driving device, a transmission device and a braking device; the driving device comprises a driving motor and a motor frame, the driving motor is fixed on the motor frame, and the motor frame is arranged on the bottom plate;
the transmission device comprises a conductor disc, a permanent magnet disc, a transmission shaft and a load, wherein the conductor disc is coaxially and fixedly arranged on an output shaft of the driving motor; one end of the transmission shaft is fixedly connected with the permanent magnet disc, the other end of the transmission shaft is connected with a load, a bearing mounting plate is fixedly arranged on the bottom plate, and the transmission shaft is rotatably arranged on the bearing mounting plate through a bearing;
the braking device comprises a braking plate, a braking transmission mechanism and a braking motor, wherein the braking plate is positioned in a movable space between the conductor disc and the permanent magnet disc, the braking motor drives the braking plate to move in the movable space through the braking transmission mechanism, when the axial overlapping area of the braking plate and the permanent magnet disc along the transmission shaft is larger than zero, the braking plate plays a braking role on the permanent magnet disc, and when the axial overlapping area of the braking plate and the permanent magnet disc along the transmission shaft is equal to zero, the braking plate does not have a braking role on the permanent magnet disc.
2. A magnetic coupling brake test apparatus according to claim 1, wherein: the sliding block is fixedly arranged on the lower side of the motor frame, the guide rail mounting plate is arranged on the bottom plate along the direction of the output shaft of the driving motor, the guide rail is fixedly arranged on the guide rail mounting plate, the positioning plate is fixedly arranged on the guide rail mounting plate, the guide rail is fixed on the bottom plate through the positioning plate, and the sliding block is arranged on the guide rail in a sliding mode.
3. A magnetic coupling brake test apparatus according to claim 1, wherein: the motor frame is fixedly provided with a push rod, one end of the push rod is connected with the motor frame, the other end of the push rod is fixedly provided with a push rod baffle plate for controlling the limit position of the conductor disc, and the push rod baffle plate is provided with a displacement sensor for monitoring the moving position of the driving motor.
4. A magnetic coupling brake test apparatus according to claim 1, wherein: the permanent magnet disc comprises a plurality of pairs of permanent magnets, the permanent magnets are uniformly distributed on the permanent magnet disc in the radial direction, and magnetic poles are alternately distributed in an N pole and an S pole.
5. A magnetic coupling brake test apparatus according to claim 1, wherein: the device further comprises a torque and rotation speed sensor, wherein one end of the torque and rotation speed sensor is fixedly connected with the transmission shaft, and the other end of the torque and rotation speed sensor is fixedly connected with the input end of the load.
6. A magnetic coupling brake test apparatus according to claim 1, wherein: the brake transmission mechanism comprises a lead screw and a threaded sleeve matched with the lead screw, the lead screw is rotatably connected with a bearing seat fixedly arranged on the bottom plate, one end of the lead screw is fixedly connected with an output shaft of the brake motor through a coupler, and the threaded sleeve is fixedly connected with the brake plate.
7. The magnetic coupling brake test device according to claim 8, wherein the number of the brake plates and the number of the threaded sleeves are two, the threaded sleeves correspond to the brake plates one by one, and the two brake plates are symmetrically arranged on two sides of the permanent magnet disc in the axial direction respectively; when the screw rod rotates, the two brake plates simultaneously move towards the middle of the axis of the permanent magnet disc or the two sides of the axis of the permanent magnet disc.
8. A magnetically coupled brake test apparatus according to claim 1, wherein the braking plane of the braking plate is parallel to the working end face of the permanent magnet disc.
9. A magnetic coupling brake test method, comprising a magnetic coupling brake test apparatus according to any one of claims 1 to 8, comprising the steps of:
s1: keeping the brake plate in an open state, enabling the axial overlapping area of the brake plate and the permanent magnet disc along the transmission shaft to be zero, and adjusting the distance between the conductor disc and the permanent magnet disc according to the required transmission torque;
s2: starting a driving motor to drive a conductor disc to rotate, generating relative rotation between the conductor disc and a permanent magnet disc, generating induced eddy current by cutting magnetic induction lines of the permanent magnet disc by the conductor disc, and enabling the permanent magnet disc to rotate by the interaction force between the induced eddy current and a magnetic field of the permanent magnet disc so as to drive a load to rotate;
s3: when the permanent magnet disc reaches the specified rotating speed, the driving motor is turned off, the braking motor is turned on, the braking plate moves towards the middle until the braking plate is turned off through the matching of the screw rod and the threaded sleeve, at the moment, the conductor disc and the permanent magnet disc are separated by the braking plate, the coupling area between the braking plate and the permanent magnet disc is the largest, the braking plate generates damping torque to the permanent magnet disc, the inertial rotation of the permanent magnet disc is prevented, and the braking purpose is achieved; and finally, the transmission characteristics are obtained by measuring the load torque and the rotating speed of the transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010288627.7A CN111323704A (en) | 2020-04-14 | 2020-04-14 | Magnetic coupling brake test device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010288627.7A CN111323704A (en) | 2020-04-14 | 2020-04-14 | Magnetic coupling brake test device and method |
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| CN111323704A true CN111323704A (en) | 2020-06-23 |
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| CN202010288627.7A Pending CN111323704A (en) | 2020-04-14 | 2020-04-14 | Magnetic coupling brake test device and method |
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| CN (1) | CN111323704A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116952437A (en) * | 2023-09-19 | 2023-10-27 | 航天泰心科技有限公司 | Motor torque measuring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116952437A (en) * | 2023-09-19 | 2023-10-27 | 航天泰心科技有限公司 | Motor torque measuring device |
| CN116952437B (en) * | 2023-09-19 | 2023-12-15 | 航天泰心科技有限公司 | Motor torque measuring device |
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Application publication date: 20200623 |
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| RJ01 | Rejection of invention patent application after publication |