CN117289128A - Outer rotor permanent magnet synchronous motor testing device and method - Google Patents
Outer rotor permanent magnet synchronous motor testing device and method Download PDFInfo
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- CN117289128A CN117289128A CN202311581278.8A CN202311581278A CN117289128A CN 117289128 A CN117289128 A CN 117289128A CN 202311581278 A CN202311581278 A CN 202311581278A CN 117289128 A CN117289128 A CN 117289128A
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- 238000012360 testing method Methods 0.000 title claims abstract description 96
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims description 10
- 230000007246 mechanism Effects 0.000 claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 claims description 24
- 239000010959 steel Substances 0.000 claims description 24
- 230000009466 transformation Effects 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000011056 performance test Methods 0.000 abstract description 6
- 230000009471 action Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000010998 test method Methods 0.000 description 2
- 230000009286 beneficial 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The invention belongs to the technical field of performance test of an outer rotor motor, in particular to an outer rotor permanent magnet synchronous motor testing device and an outer rotor permanent magnet synchronous motor testing method. By arranging the testing mechanism, the invention not only can test the rotating speed and the steering of the external rotor motor, but also can realize the testing of the load performance of the external rotor motor, can effectively improve the comprehensiveness of the device for testing the external rotor permanent magnet synchronous motor, improves the testing range of the external rotor permanent magnet synchronous motor testing device, and increases the overall practicability of the external rotor permanent magnet synchronous motor testing device.
Description
Technical Field
The invention belongs to the technical field of performance test of external rotor motors, and particularly relates to an external rotor permanent magnet synchronous motor test device and method.
Background
The outer rotor motor has the characteristics of space saving, compact design and attractive appearance, does not need a V-shaped belt, an additional tensioning belt or other equipment, and is applied more and more widely.
The Chinese patent with publication number of CN214011439U discloses an external rotor motor steering and rotating speed testing mechanism, which solves the problem that the existing large-diameter high-speed external rotor motor has no proper device for testing the rotating speed and steering of the external rotor motor and cannot effectively monitor the quality of products, but when the external rotor motor is subjected to performance test, the motor is required to be subjected to load performance test, but the testing mechanism can only carry out rotating speed and steering test and cannot carry out load performance test, so that the testing mechanism has lower comprehensiveness of the external rotor motor test.
Disclosure of Invention
The invention provides an outer rotor permanent magnet synchronous motor testing device and method for solving the problems in the background art, aiming at the problems that in the prior art, only rotating speed and steering tests can be carried out and load performance tests cannot be carried out.
In order to achieve the above purpose, the present invention provides the following technical solutions: the outer rotor permanent magnet synchronous motor testing device comprises a bottom plate, a hydraulic rod and a guide rail are installed at one end of the top of the bottom plate, a sliding plate is sleeved outside the guide rail in a sliding mode, a mounting plate is fixedly connected to one side of the sliding plate, which is close to the hydraulic rod, and the mounting plate and the sliding plate are sleeved outside the slide rail in a sliding mode together, one end of an output shaft of the hydraulic rod is fixedly connected with the mounting plate, and a testing mechanism capable of switching two testing modes is arranged on one side, which is far away from the hydraulic rod, of the mounting plate.
Further, the testing mechanism comprises an L-shaped plate which is sleeved outside the sliding plate in a sliding manner, one side, away from the mounting plate, of the L-shaped plate is rotationally connected with a mounting pipe, a rubber wheel is fixedly sleeved outside the mounting pipe, one side, away from the mounting plate, of the L-shaped plate is provided with a mounting groove matched with the rubber wheel, the mounting frame is fixedly connected with the top end of the L-shaped plate, an encoder is fixedly arranged at one end of the top of the mounting frame, a pair of first gears meshed with each other are arranged at one end of the top of the L-shaped plate, one of the first gears is connected with the encoder through a coupler, and the other of the first gears is fixedly sleeved outside the mounting pipe.
Further, be provided with the atress board between L shaped plate and the mounting panel, and the atress board slides and cup joints in the outside of sliding plate, pressure sensor is installed to the outside of mounting panel and atress board relative one side, one side fixedly connected with first spring that pressure sensor was kept away from to the atress board, one side and L shaped plate fixed connection that the atress board was kept away from to first spring, the inside sliding connection of L shaped plate has the inserted bar, and the inserted bar setting is in one side that the L shaped plate is close to the mounting panel, the sliding plate keep away from the top one end of mounting panel one side and offered the slot that uses with the inserted bar cooperation, fixedly connected with two locating levers between mounting bracket and the L shaped plate, two the outside of locating lever slides jointly and cup joints a layer board, the top one end of inserted lever extends to the outside of L shaped plate and with layer board fixed connection, the electro-magnet is all installed to one side opposite to layer board and mounting bracket, two the outside of locating lever all activity cup joints the second spring, and two springs all set up between layer board and mounting bracket.
Further, a test wheel switching mechanism capable of prolonging the service life of the rubber wheel when the test mode is switched is arranged below the mounting frame;
the test wheel switching mechanism comprises an annular groove formed in the outer side of a rubber wheel, four brackets are arranged in the annular groove, a plurality of steel balls are connected to the inner portion of each bracket in a rotating mode, two ends of each steel ball are fixedly connected with positioning shafts, through grooves matched with the positioning shafts are formed in the upper ends and the lower ends of the brackets, straight grooves matched with the positioning shafts are formed in the bottom surface of the annular groove, one ends of the bottoms of the positioning shafts penetrate through the through grooves and extend to the inner portion of the straight grooves, the straight grooves are arranged in an emission mode starting from the center of a circle, four cross rods are connected to the inner portion of each rubber wheel in a sliding mode and are composed of a square rod and a disc fixedly sleeved on the outer portion of each cross rod, movable grooves matched with the cross rods are formed in the inner portion of each rubber wheel in a sleeved mode, third springs are movably sleeved on the outer portions of the cross rods, one ends of the cross rods extend to the inner portions of the annular groove and are fixedly connected with the brackets respectively, the third springs are arranged on one sides of the cross rods, opposite to the discs, and one ends of the cross rods extend to the inner portions of the brackets, and the cross rods are far away from the inner portions of the brackets, and the cross rods are fixedly connected to one ends of the corresponding cross rods.
Further, the bottom one end fixedly connected with right-angle plate of L shaped plate, the top one end fixedly connected with T shape pole of right-angle plate, and T shape pole comprises a disc and the square pole of setting in disc top one end, the outside activity of T shape pole cup joints the push rod that uses with the bulb cooperation, the cross-sectional shape of push rod top one end is the toper, the both sides of L shaped plate all rotate and are connected with the second gear, the equal fixedly connected with of both sides of layer board and second gear engagement's pinion rack, and two pinion racks and layer board formula design as an organic whole, the both sides of L shaped plate all are provided with T shape strip, and T shape strip and L shaped plate design as an organic whole, two the outside of T shape strip has slided jointly and has cup jointed a U-shaped plate, one side fixedly connected with two racks and the second gear engagement of rubber wheel are kept away from to the U-shaped plate, and two racks set up respectively in the top of two second gears, two the pinion racks set up respectively between two racks and L shaped plate, the below of L shaped plate is provided with L shape pole, L shape pole and L shaped connection has the connecting rod and L shaped plate to keep away from one side of the connecting rod, L shaped plate is kept away from one side of the connecting rod, the L shaped plate is kept away from.
Further, the side cross section shape of guide rail is T shape, the bottom one end of sliding plate and mounting panel all is provided with the T-shaped groove that uses with the guide rail cooperation.
Further, the cross-sectional shape of sliding plate is L shape, the side cross-sectional shape of sliding plate top one end is T shape, and the bottom one end of mounting panel and L shaped plate all is provided with the T-shaped groove that uses with the sliding plate cooperation.
Further, the cross section of the bracket is arc-shaped, and the side cross section of the bracket is U-shaped.
The invention also provides a test method of the outer rotor permanent magnet synchronous motor, which comprises the following steps:
s1: when the rotating speed and the steering are tested, the two electromagnets are closed, the inserted link is inserted into the slot by utilizing the cooperation between the structures, the L-shaped plate and the sliding plate are fixed, and meanwhile, the test wheel switching mechanism is used for enabling a plurality of steel balls to be retracted into the annular grooves at the outer side of the rubber wheel;
s2: the hydraulic rod pushes the testing mechanism to move, so that the rubber wheel is contacted with the outer circular surface of the motor rotor of the outer rotor to be tested, the friction force between the outer circular surface of the motor and the rubber wheel is used for driving the rubber wheel to rotate, the rotation speed is read out by utilizing the cooperation between the structures and the encoder and the built-in program, and then the rotation speed and the steering information of the motor to be tested are calculated through the transformation ratio;
s3: switching on two electromagnets, switching to a load test mode by utilizing the cooperation between the structures, and simultaneously using a test wheel switching mechanism to enable a plurality of steel balls to protrude out of the rubber wheel;
s4: the rubber wheel is pushed to be contacted with the outer circular surface of the motor to be tested through the cooperation between the hydraulic rod and the structure, the mounting plate and the sliding plate are pushed continuously after the rubber wheel is contacted with the outer circular surface of the motor, the friction force between the rubber wheel and the outer circular surface of the motor is increased, the friction force of the outer rotor motor, which is given to the rubber wheel, is measured by the pressure sensor, and the friction force is converted into the load of the motor to be tested at the moment through transformation ratio calculation by using an internal program.
The beneficial effects of the invention are as follows:
1. by arranging the testing mechanism, the invention not only can test the rotating speed and the steering of the external rotor motor, but also can realize the testing of the load performance of the external rotor motor, can effectively improve the comprehensiveness of the device for testing the external rotor permanent magnet synchronous motor, improves the testing range of the external rotor permanent magnet synchronous motor testing device, and increases the overall practicability of the external rotor permanent magnet synchronous motor testing device.
2. According to the invention, the test wheel switching mechanism is arranged, so that the rubber wheel can be adaptively switched when the test mechanism is used for switching modes, the abrasion of the rubber wheel during load test can be effectively avoided, the service life of the rubber wheel is prolonged, the use effect of the test mechanism is effectively improved, the service life of the test mechanism is prolonged, and the overall practicability of the outer rotor permanent magnet synchronous motor test device is further improved.
Drawings
FIG. 1 shows a front view of an embodiment of the present invention;
FIG. 2 illustrates a partial structure split schematic of an embodiment of the present invention;
FIG. 3 illustrates a partial structure split schematic of FIG. 2 in accordance with an embodiment of the invention;
FIG. 4 illustrates a partial structure split schematic of FIG. 3 in accordance with an embodiment of the invention;
FIG. 5 shows a cutaway plan view of an L-shaped panel of an embodiment of the invention;
FIG. 6 shows a top view of a rubber wheel of an embodiment of the present invention;
FIG. 7 illustrates a partial structure split schematic of FIG. 6 in accordance with an embodiment of the invention;
in the figure: 1. a bottom plate; 2. a hydraulic rod; 3. a guide rail; 4. a sliding plate; 5. a mounting plate; 6. a testing mechanism; 61. an L-shaped plate; 62. installing a pipe; 63. a rubber wheel; 64. a mounting frame; 65. an encoder; 66. a first gear; 67. a force-bearing plate; 68. a pressure sensor; 69. a first spring; 70. a rod; 71. a slot; 72. a positioning rod; 73. a supporting plate; 74. an electromagnet; 75. a second spring; 8. a test wheel switching mechanism; 81. an annular groove; 82. a bracket; 83. steel balls; 84. positioning a shaft; 85. a through groove; 86. a straight groove; 87. a cross bar; 88. a third spring; 89. ball head; 90. a right angle plate; 91. a T-bar; 92. a push rod; 93. a second gear; 94. a toothed plate; 95. a T-bar; 96. a U-shaped plate; 97. a rack; 98. an L-shaped rod; 99. and (5) connecting a rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the embodiments.
Example 1
The invention provides an outer rotor permanent magnet synchronous motor testing device, which is shown in fig. 1 to 7, and comprises a bottom plate 1, wherein one end of the top of the bottom plate 1 is provided with a hydraulic rod 2 and a guide rail 3, the outside of the guide rail 3 is in sliding sleeve connection with a sliding plate 4, one side of the sliding plate 4 close to the hydraulic rod 2 is fixedly connected with a mounting plate 5, the mounting plate 5 and the sliding plate 4 are in sliding sleeve connection with the outside of a sliding rail, one end of an output shaft of the hydraulic rod 2 is fixedly connected with the mounting plate 5, and one side of the mounting plate 5 far away from the hydraulic rod 2 is provided with a testing mechanism 6 capable of switching two testing modes;
the testing mechanism 6 comprises an L-shaped plate 61 which is sleeved outside the sliding plate 4 in a sliding manner, one side, far away from the mounting plate 5, of the L-shaped plate 61 is rotatably connected with a mounting pipe 62, a rubber wheel 63 is fixedly sleeved outside the mounting pipe 62, one side, far away from the mounting plate 5, of the L-shaped plate 61 is provided with a mounting groove matched with the rubber wheel 63, one end of the top of the L-shaped plate 61 is fixedly connected with a mounting frame 64, an encoder 65 is fixedly arranged at one end of the top of the mounting frame 64, one end of the top of the L-shaped plate 61 is provided with a pair of first gears 66 which are meshed with each other, one first gear 66 is connected with the encoder 65 through a coupler, and the other first gear 66 is fixedly sleeved outside the mounting pipe 62;
a stress plate 67 is arranged between the L-shaped plate 61 and the mounting plate 5, the stress plate 67 is in sliding sleeve connection with the outside of the sliding plate 4, a pressure sensor 68 is arranged on one side, opposite to the stress plate 67, of the mounting plate 5, a first spring 69 is fixedly connected to one side, far away from the pressure sensor 68, of the stress plate 67, one side, far away from the stress plate 67, of the L-shaped plate 61 is fixedly connected with the L-shaped plate 61, an inserting rod 70 is in sliding connection with the inside of the L-shaped plate 61, the inserting rod 70 is arranged on one side, close to the mounting plate 5, of the L-shaped plate 61, a slot 71 matched with the inserting rod 70 is formed in one end, far away from the top, of the side, of the sliding plate 4, of the mounting plate 5, two positioning rods 72 are fixedly connected between the mounting frame 64 and the L-shaped plate 61, a supporting plate 73 is in sliding sleeve connection with the outside of the two positioning rods 72, one end, which extends to the outside of the L-shaped plate 61, is fixedly connected with the supporting plate 73, electromagnets 74 are respectively arranged on one side, opposite to the mounting frame 64, the two positioning rods 72 are respectively, and the two springs 75 are respectively and are respectively arranged between the supporting plates 73 and 64;
the side section of the guide rail 3 is T-shaped, and T-shaped grooves matched with the guide rail 3 are formed in one end of the bottoms of the sliding plate 4 and the mounting plate 5;
the cross section of the sliding plate 4 is L-shaped, the side cross section of one end of the top of the sliding plate 4 is T-shaped, and T-shaped grooves matched with the sliding plate 4 are formed in the mounting plate 5 and one end of the bottom of the L-shaped plate 61;
when the device is required to be used for testing the rotating speed and the steering of the external rotor motor, the two electromagnets 74 are closed, at the moment, the supporting plate 73 pushes the inserting rod 70 to be inserted into the slot 71 under the extending and resetting actions of the two second springs 75, the L-shaped plate 61 and the sliding plate 4 are fixed, then the mounting plate 5 can be pushed to move through the hydraulic rod 2, the mounting plate 5 pushes the L-shaped plate 61 and the rubber wheel 63 to synchronously move through the sliding plate 4, so that the rubber wheel 63 is contacted with the outer circular surface of the rotor of the external rotor motor to be tested, the rubber wheel 63 is driven to rotate by virtue of the friction force between the outer circular surface of the motor and the rubber wheel 63, the rubber wheel 63 drives the two first gears 66 to rotate through the mounting tube 62, the first gears 66 below the encoder 65 drive the encoder 65 to rotate through the coupler, the rotating speed is read through the encoder 65 and the built-in program, and then the rotating speed and the steering information of the tested motor are calculated through the transformation ratio;
when the load test is required to be performed on the external rotor motor, two electromagnets 74 can be opened, the electromagnet 74 on the supporting plate 73 drives the supporting plate 73 to move upwards along the two positioning rods 72 by utilizing the magnetic force between the two electromagnets 74 and presses the second spring 75, so that the supporting plate 73 drives the inserting rod 70 to move upwards synchronously, the inserting rod 70 moves out of the slot 71, the limiting and fixing effect of the inserting rod 70 on the L-shaped plate 61 and the sliding plate 4 is relieved, then the rubber wheel 63 can be pushed to contact with the external circle surface of the motor to be tested again through the operation, the mounting plate 5 and the sliding plate 4 can be pushed continuously after the rubber wheel 63 contacts with the external circle surface of the motor, so that the friction force between the rubber wheel 63 and the external circle surface of the motor is increased, at this moment, the friction force between the rubber wheel 63 and the rubber wheel 63 needs to be overcome in the rotation process of the external rotor motor is equivalent to the load in the operation process of the motor, and at the same time, the rubber wheel 63 pushes the L-shaped plate 61 to move towards the direction close to the external circle surface of the sliding plate 4 by the abutting effect between the external circle surface of the motor, the rubber wheel 70 and presses the first spring 69, the rubber wheel 63 is pushed to contact with the external circle surface of the motor to be tested, the pressure sensor 68 is further applied to the pressure sensor 68 by the external rotor 68, and the pressure is detected by the external rotor 68, and the pressure is applied to the external rotor 68 is detected by the pressure sensor through the pressure sensor, and the external rotor 68;
according to the invention, the testing mechanism 6 is arranged, so that the rotating speed and the steering of the outer rotor motor can be tested, the load performance of the outer rotor motor can be tested, the comprehensiveness of the device for testing the outer rotor permanent magnet synchronous motor can be effectively improved, the testing range of the outer rotor permanent magnet synchronous motor testing device is improved, and the overall practicability of the outer rotor permanent magnet synchronous motor testing device is improved.
As shown in fig. 1 to 7, a test wheel switching mechanism 8 capable of extending the service life of the rubber wheel 63 when switching the test mode is provided below the mounting frame 64;
the test wheel switching mechanism 8 comprises an annular groove 81 formed in the outer side of the rubber wheel 63, four brackets 82 are arranged in the annular groove 81, a plurality of steel balls 83 are rotationally connected to the inner parts of the four brackets 82, positioning shafts 84 are fixedly connected to the upper ends and the lower ends of the plurality of steel balls 83, through grooves 85 matched with the positioning shafts 84 are formed in the upper ends and the lower ends of the brackets 82, straight grooves 86 matched with the positioning shafts 84 are formed in the bottom surface of the annular groove 81, one ends of the bottoms of the plurality of positioning shafts 84 penetrate through the through grooves 85 and extend to the inner parts of the straight grooves 86, the plurality of straight grooves 86 are arranged in a radial mode starting from the center of a circle, four cross rods 87 are connected to the inner parts of the rubber wheel 63 in a sliding mode, the cross rods 87 consist of a square rod and a disc fixedly sleeved outside the cross rods 87, movable grooves matched with the cross rods 87 are formed in the inner parts of the rubber wheel 63, third springs 88 are movably sleeved on the outer parts of the four cross rods 87, one ends of the four cross rods 87 extend to the inner parts of the annular groove 81 and are fixedly connected with the brackets 82 respectively, the cross rods 87 are arranged in the circular rods 82, and the inner ends of the cross rods 87 are fixedly connected to one sides of the discs 82 far away from the inner parts of the cross rods 62;
the bottom end of the L-shaped plate 61 is fixedly connected with a rectangular plate 90, one end of the top of the rectangular plate 90 is fixedly connected with a T-shaped rod 91, the T-shaped rod 91 consists of a disc and a square rod arranged at one end of the top of the disc, a push rod 92 matched with the ball head 89 is movably sleeved outside the T-shaped rod 91, the section of one end of the top of the push rod 92 is conical, two sides of the L-shaped plate 61 are both rotationally connected with a second gear 93, two sides of the support plate 73 are both fixedly connected with toothed plates 94 meshed with the second gear 93, the two toothed plates 94 and the support plate 73 are designed as a whole, two sides of the L-shaped plate 61 are both provided with T-shaped strips 95, the T-shaped strips 95 and the L-shaped plate 61 are designed as a whole, one side, far away from the rubber wheel 63, of the U-shaped plate 96 is fixedly connected with two racks 97 meshed with the second gear 93, the two racks 97 are respectively arranged above the two first gears 93, the two toothed plates 94 are respectively arranged between the two racks 97 and the L61, the lower side of the L-shaped rod 98 is provided with a connecting rod 98, one side, far away from the L-shaped rod 98 is hinged from the L-shaped rod 98, and one side, far away from the L-shaped rod 98 is fixedly connected with the L-shaped rod 98, the connecting rod 98 is hinged to one side, the L-shaped rod 98 is far away from the L-shaped rod 98;
the cross section of the bracket 82 is arc-shaped, and the side cross section of the bracket 82 is U-shaped;
when the device is switched from the rotating speed steering test to the load test, the supporting plate 73 drives the two toothed plates 94 to synchronously move upwards, the two toothed plates 94 drive the two second gears 93 to rotate clockwise through the meshing action between the two toothed plates 93, the two second gears 93 drive the U-shaped plate 96 to move towards the direction close to the rubber wheel 63 through the meshing action between the two racks 97, so that the U-shaped plate 96 pushes the connecting plate to move through the L-shaped plate 61, the push rod 92 is pushed to move upwards outside the T-shaped rod 91 through the connecting plate, the four cross rods 87 are pushed to move and squeeze the third springs 88 through the abutting action between the push rod 92 and the four ball heads 89, the cross rods 87 push the plurality of steel balls 83 to move outwards of the annular grooves 81 through the brackets 82, the positioning shafts 84 at the upper end and the lower end of the steel balls 83 are enabled to move inwards of the through grooves 85 and the straight grooves 86, the steel balls 83 are enabled to protrude out of the annular grooves 81, the spacing between the plurality of the steel balls 83 is adjusted through the grooves 86 which are arranged in a radial mode, and the spacing between the plurality of steel balls 83 is always the same;
when the load test is carried out, the plurality of convex steel balls 83 are contacted with the outer circular surface of the motor and apply pressure to the motor, the motor is not released from the outer surface of the rubber wheel 63 in the rotating process, so that the abrasion of the outer circular surface of the motor to the rubber wheel 63 in the load test can be reduced, and the plurality of steel balls 83 are driven to rotate by the friction force between the steel balls 83 in the motor test process, so that the abrasion of the steel balls 83 and the outer circular surface of the motor is reduced;
when the supporting plate 73 moves downwards, namely the device is switched from a load test to a rotation speed steering test, the supporting plate 73 drives the two toothed plates 94 to synchronously move downwards, the two toothed plates 94 drive the two second gears 93 to rotate anticlockwise through the meshing action between the two toothed plates 94 and the second gears 93, so that the two second gears 93 drive the U-shaped plate 96 to move away from the rubber wheel 63 through the meshing action between the two racks 97, the U-shaped plate 96 pulls the connecting plate to move through the L-shaped plate 61, so that the push rod 92 is pushed to move downwards outside the T-shaped rod 91 through the connecting plate, the interference action between the push rod 92 and the four ball heads 89 is relieved, at the moment, the four cross rods 87 drive the plurality of steel balls 83 to move towards the inside of the annular groove 81 through the bracket 82 under the stretching and resetting action of the third springs 88, and the steel balls 83 are retracted into the annular groove 81;
according to the invention, the test wheel switching mechanism 8 is arranged, so that the rubber wheel 63 can be adaptively switched when the test mechanism 6 is in mode switching, abrasion of the rubber wheel 63 during load test can be effectively avoided, the service life of the rubber wheel 63 is prolonged, the use effect of the test mechanism 6 is effectively improved, the service life of the test mechanism 6 is prolonged, and the overall practicability of the outer rotor permanent magnet synchronous motor test device is further improved.
Example 2
The invention also provides a test method of the outer rotor permanent magnet synchronous motor, which comprises the following steps:
s1: when the rotation speed and the steering are tested, the two electromagnets 74 are closed, the inserted link 70 is inserted into the slot 71 by utilizing the cooperation between the structures, the L-shaped plate 61 and the sliding plate 4 are fixed, and meanwhile, the test wheel switching mechanism 8 is used for enabling the plurality of steel balls 83 to be received in the annular groove 81 at the outer side of the rubber wheel 63;
s2: the testing mechanism 6 is pushed to move through the hydraulic rod 2, the rubber wheel 63 is contacted with the outer circular surface of the motor rotor of the outer rotor to be tested, the rubber wheel 63 is driven to rotate by virtue of the friction force between the outer circular surface of the motor and the rubber wheel 63, the rotation speed is read by utilizing the encoder 65 and an internal program by utilizing the cooperation between structures, and then the rotation speed and the steering information of the tested motor are calculated through transformation ratio;
s3: the two electromagnets 74 are turned on, the load test mode is switched by the cooperation between the structures, and the test wheel switching mechanism 8 is used for enabling the plurality of steel balls 83 to protrude out of the rubber wheel 63;
s4: the rubber wheel 63 is pushed to be contacted with the outer circular surface of the motor to be tested through the cooperation between the hydraulic rod 2 and the structure, the mounting plate 5 and the sliding plate 4 are pushed continuously after the rubber wheel 63 is contacted with the outer circular surface of the motor, the friction force between the rubber wheel 63 and the outer circular surface of the motor is increased, the friction force of the rubber wheel 63 to the outer rotor motor is measured by the pressure sensor 68, and the friction force is converted into the load of the motor to be tested at the moment through transformation ratio calculation by using an internal program.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting.
Claims (9)
1. Outer rotor permanent magnet synchronous motor testing arrangement, including bottom plate (1), its characterized in that: the hydraulic rod (2) and guide rail (3) are installed to top one end of bottom plate (1), sliding plate (4) have been cup jointed in the outside slip of guide rail (3), one side fixedly connected with mounting panel (5) that sliding plate (4) are close to hydraulic rod (2), and mounting panel (5) slide the outside of cup jointing at the slide rail together with sliding plate (4), output shaft one end and mounting panel (5) fixed connection of hydraulic rod (2), one side that hydraulic rod (2) were kept away from to mounting panel (5) is provided with testing mechanism (6) that can switch two kinds of test modes.
2. The outer rotor permanent magnet synchronous motor testing device according to claim 1, wherein the testing mechanism (6) comprises an L-shaped plate (61) which is sleeved outside the sliding plate (4) in a sliding manner, one side of the L-shaped plate (61) away from the mounting plate (5) is rotationally connected with a mounting pipe (62), a rubber wheel (63) is fixedly sleeved outside the mounting pipe (62), one side of the L-shaped plate (61) away from the mounting plate (5) is provided with a mounting groove matched with the rubber wheel (63), one end of the top of the L-shaped plate (61) is fixedly connected with a mounting frame (64), an encoder (65) is fixedly mounted at one end of the top of the mounting frame (64), a pair of first gears (66) which are meshed with each other are arranged at one end of the top of the L-shaped plate (61), one first gear (66) is connected with the encoder (65) through a coupling, and the other first gears (66) are fixedly sleeved outside the mounting pipe (62).
3. The test device for the outer rotor permanent magnet synchronous motor according to claim 2, wherein a stress plate (67) is arranged between the L-shaped plate (61) and the mounting plate (5), the stress plate (67) is sleeved outside the sliding plate (4) in a sliding manner, a pressure sensor (68) is arranged on one side, opposite to the stress plate (67), of the mounting plate (5), one side, far away from the pressure sensor (68), of the stress plate (67) is fixedly connected with a first spring (69), one side, far away from the stress plate (67), of the first spring (69) is fixedly connected with the L-shaped plate (61), an inserting rod (70) is slidably connected inside the L-shaped plate (61), the inserting rod (70) is arranged on one side, close to the mounting plate (5), of the sliding plate (4), one end, far away from the mounting plate (5), of the top is provided with an inserting groove (71) matched with the inserting rod (70), two positioning rods (72) are fixedly connected between the mounting frame (64) and the L-shaped plate (61), one outer side, which is far away from the stress plate (67), of the two positioning rods (72) is fixedly connected with the L-shaped plate (73), and the inserting rod (73) is sleeved outside the supporting plate (73) in a sliding manner, the two locating rods (72) are movably sleeved with second springs (75) at the outer parts of the supporting plates (73) and the mounting frame (64), and the two springs are arranged between the supporting plates (73) and the mounting frame (64).
4. The outer rotor permanent magnet synchronous motor testing device according to claim 3, wherein a testing wheel switching mechanism (8) capable of prolonging the service life of the rubber wheel (63) when switching the testing mode is arranged below the mounting frame (64);
the test wheel switching mechanism (8) comprises an annular groove (81) formed in the outer side of a rubber wheel (63), four brackets (82) are arranged in the annular groove (81), a plurality of steel balls (83) are rotatably connected in the brackets (82), positioning shafts (84) are fixedly connected to the upper ends and the lower ends of the steel balls (83), through grooves (85) matched with the positioning shafts (84) are formed in the upper ends and the lower ends of the brackets (82), straight grooves (86) matched with the positioning shafts (84) are formed in the bottom surface of the annular groove (81), one end of the bottom of each positioning shaft (84) penetrates through the through grooves (85) to extend to the inner portion of each straight groove (86), the straight grooves (86) are arranged in an emission shape starting from the center of a circle, four cross rods (87) are connected in a sliding mode in the inner portion of the rubber wheel (63), the cross rods (87) are composed of square rods and discs fixedly sleeved outside the cross rods (87), the cross rods (63) are arranged in the inner portions of the cross rods (63) and are respectively connected with the four cross rods (87) in a movable mode, the cross rods (87) are movably connected to the inner ends of the four cross rods (87) in a sleeved mode, the cross rods (87) respectively, and the third springs (88) are arranged on one side of the cross rods (87) opposite to the disc and the bracket (82), and one ends of the four cross rods (87) far away from the bracket (82) are all extended to the inside of the mounting tube (62) and fixedly connected with the ball heads (89).
5. The testing device for the outer rotor permanent magnet synchronous motor according to claim 4, wherein a right angle plate (90) is fixedly connected to one end of the bottom of the L-shaped plate (61), a T-shaped rod (91) is fixedly connected to one end of the top of the right angle plate (90), the T-shaped rod (91) is composed of a disc and a square rod arranged at one end of the top of the disc, a push rod (92) matched with the ball head (89) is movably sleeved outside the T-shaped rod (91), the cross section of one end of the top of the push rod (92) is conical, two sides of the L-shaped plate (61) are rotatably connected with a second gear (93), two sides of the supporting plate (73) are fixedly connected with toothed plates (94) meshed with the second gear (93), two toothed plates (94) and the supporting plate (73) are integrally designed, two sides of the L-shaped plate (61) are respectively provided with T-shaped strips (95), the T-shaped strips (95) and the L-shaped strips (61) are integrally designed, the two outer sides of the T-shaped strips (95) are jointly slid, one U-shaped strip (96) is meshed with the two toothed plates (97) and the two toothed plates (96) are fixedly sleeved on one side of the two sides of the two toothed plates (93), two pinion rack (94) set up respectively between two racks (97) and L shaped plate (61), the below of L shaped plate (61) is provided with L shape pole (98), the one end and the U shaped plate (96) fixed connection of L shape pole (98), one side sliding connection that U shaped plate (96) were kept away from to L shape pole (98) is in the reservation spout of right angle plate (90) one side, one side that U shaped plate (96) was kept away from to L shape pole (98) articulates there is connecting rod (99), one side that L shaped pole (98) were kept away from to connecting rod (99) is articulated with push rod (92).
6. The outer rotor permanent magnet synchronous motor testing device according to claim 5, wherein the side section shape of the guide rail (3) is T-shaped, and T-shaped grooves matched with the guide rail (3) for use are formed in one end of the bottoms of the sliding plate (4) and the mounting plate (5).
7. The outer rotor permanent magnet synchronous motor testing device according to claim 6, wherein the cross section of the sliding plate (4) is L-shaped, the side cross section of one end of the top of the sliding plate (4) is T-shaped, and the mounting plate (5) and one end of the bottom of the L-shaped plate (61) are provided with T-shaped grooves used in cooperation with the sliding plate (4).
8. The outer rotor permanent magnet synchronous motor testing device according to claim 7, wherein the cross-sectional shape of the bracket (82) is arc-shaped, and the side cross-sectional shape of the bracket (82) is U-shaped.
9. A method for testing an external rotor permanent magnet synchronous motor according to any one of claims 1-8, characterized in that: the method comprises the following steps:
s1: when the rotating speed and the steering are tested, the two electromagnets (74) are closed, the inserting rod (70) is inserted into the inserting groove (71) by utilizing the cooperation between the structures, the L-shaped plate (61) and the sliding plate (4) are fixed, and meanwhile, the test wheel switching mechanism (8) is used for enabling the plurality of steel balls (83) to be received in the annular grooves (81) at the outer side of the rubber wheel (63);
s2: the testing mechanism (6) is pushed to move through the hydraulic rod (2), the rubber wheel (63) is contacted with the outer circular surface of the motor rotor of the outer rotor to be tested, the rubber wheel (63) is driven to rotate by virtue of friction force between the outer circular surface of the motor and the rubber wheel (63), the rotation speed is read by utilizing the cooperation between the structures and the encoder (65) and the built-in program, and then the rotation speed and the steering information of the motor to be tested are calculated through the transformation ratio;
s3: two electromagnets (74) are opened, the load test mode is switched by utilizing the cooperation between the structures, and a plurality of steel balls (83) protrude out of the rubber wheel (63) by using a test wheel switching mechanism (8);
s4: the rubber wheel (63) is pushed to be contacted with the outer circular surface of the motor to be tested through the cooperation between the hydraulic rod (2) and the structure, the mounting plate (5) and the sliding plate (4) are pushed continuously after the rubber wheel (63) is contacted with the outer circular surface of the motor, the friction force between the rubber wheel (63) and the outer circular surface of the motor is increased, the friction force of the rubber wheel (63) to the outer rotor motor is measured by the pressure sensor (68), and the friction force is converted into the load of the motor to be tested at the moment through transformation ratio calculation by using an internal program.
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