CN117310487A - Motor terminal electrical measurement equipment - Google Patents

Abstract

The application discloses motor terminal electricity test equipment belongs to motor test technical field, and this motor has grafting portion, has the terminal in this grafting portion, and the terminal is used for grafting power to test the motor, this equipment includes: a placement unit; the lifting assembly is arranged above the plug-in part, the test head is internally provided with a conducting strip, and the conducting strip is electrically connected with a detection power supply; the plug-in part includes: at least two contacts, two contacts set up in different positions, wherein: in the process of moving the lifting assembly, the test head is driven to be connected with different contacts in the plug-in part, so that the forward and reverse rotation test of the motor is realized. When the technical scheme of the invention is implemented, the plug-in part is arranged and is connected with the motor to be detected, meanwhile, the lifting assembly is arranged above the plug-in part, and the lifting assembly drives the test head to reciprocate up and down, so that two contacts in the plug-in part are connected with the power supply, and the forward and backward rotation test of the motor is realized.

Description

Motor terminal electrical measurement equipment

Technical Field

The application relates to the technical field of motor testing, in particular to motor terminal electrical measurement equipment.

Background

The motor is also called a motor, is an electromagnetic device for converting or transmitting electric energy according to the law of electromagnetic induction, and is widely applied to the fields of automobiles, household appliances, automatic production lines and the like.

Along with the improvement of the industrial manufacturing level, the application range and the output of the motor are continuously expanded, so that the production quality of the motor is more and more important, the motor needs to be detected before delivery after the motor is produced, and the forward and reverse rotations of the motor are usually tested at present, so that the motor is ensured to meet delivery requirements under the forward and reverse rotation working conditions.

According to the law of electromagnetic induction, the direction of current in an electromagnetic field is changed, so that in motor test, the forward and reverse rotation of a motor is realized by changing the direction of current in the motor, the most common method is to adjust the positive and negative poles of power supplies at two ends of the motor, so that the forward and reverse rotation of the motor can be realized, and a testing device is connected to test the motor in the process of motor rotation.

However, in the process of implementing the technical scheme of the invention in the embodiment of the application, the inventor of the application finds that at least the following technical problems exist in the above technology: at present, the positive and negative poles of the power supply at two ends of the motor are manually exchanged to perform forward and reverse rotation tests on the motor, but the method needs to be manually operated at any time, and has lower efficiency in large-scale motor production tests.

It is necessary to provide a motor terminal electrical testing apparatus with high testing efficiency to solve the above-mentioned problems.

It should be noted that the above information disclosed in this background section is only for understanding the background of the inventive concept and, therefore, it may contain information that does not constitute prior art.

Disclosure of Invention

Based on the above problems existing in the prior art, the technical problems to be solved in the application are as follows: the motor terminal electrical measurement equipment achieves the effect of improving motor test efficiency.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a motor terminal electricity test equipment, is applied to in the rotation test of motor, this motor has grafting portion, has the terminal in this grafting portion, the terminal is used for grafting power to test the motor, this equipment includes:

a placement section for placing a motor to be detected;

the lifting assembly is arranged above the plug-in part and is suitable for reciprocating along the vertical direction;

the testing head is internally provided with a conducting strip, and the conducting strip is electrically connected with a detection power supply;

the plug-in portion includes:

at least two contacts, wherein the two contacts are arranged at different positions, and the connection polarity of the two contacts and the motor is opposite;

wherein: and in the moving process of the lifting assembly, the test head is driven to be connected with different contacts in the plug-in part, so that the forward and reverse rotation test of the motor is realized.

When the technical scheme of the invention is implemented, the plug-in part is arranged and is connected with the motor to be detected, meanwhile, the lifting assembly is arranged above the plug-in part, and the lifting assembly drives the test head to reciprocate up and down, so that two contacts in the plug-in part are connected with the power supply, and the forward and backward rotation test of the motor is realized.

Further, the plug part is provided with a plug detection sleeve, the shape of the plug detection sleeve is consistent with that of the plug part, at least four groups of sleeve rods are arranged in the plug detection sleeve, the four groups of sleeve rods are combined to form a circle, the positions of the sleeve rods are consistent with the positions of the terminals in the plug part, and the sleeve rods are suitable for being sleeved on the terminals of the motor.

Further, a contact cavity is formed in the test head, the contact cavity is a cylindrical cavity, and the diameter of the contact cavity is larger than that of a circle formed by combining four loop bars;

wherein: the contact cavity is adapted to receive a ferrule rod therein after the test head is inserted into the mating detection ferrule.

Further, a placing block is arranged at the center of the contact cavity, the placing block is cylindrical, the placing block is provided with a placing cavity penetrating through the test head, and the conducting strip is arranged on the side face of the placing block.

Further, a first sliding rod is inserted into the placing cavity, the upper end face of the first sliding rod protrudes out of the testing head, the upper end face of the first sliding rod is connected with the lifting assembly, and downward pressure is given to the first sliding rod when the lifting assembly moves downwards, so that the first sliding rod is driven to move downwards.

Further, the first slide bar is provided with a first guide groove, the first slide bar is provided with an inner cavity, a limiting rod is arranged in the inner cavity, the limiting rod is provided with a limiting block, the limiting block is symmetrically arranged, the width of the limiting block is consistent with that of the first guide groove, the bottom of the limiting block is provided with an inclined block, and a first spring is arranged between the top of the limiting block and the inner cavity of the first slide bar.

Further, a second slide bar matched with the first slide bar is further arranged in the placing cavity, the upper end face of the second slide bar is contacted with the lower end face of the first slide bar, and a second guide groove with the same specification as the first guide groove is arranged on the second slide bar.

Further, the bracing piece has been cup jointed to the below of second slide bar, the bracing piece with the second slide bar is cup jointed, the cover is equipped with the second spring on the bracing piece, the bracing piece is used for supporting the second slide bar.

Further, a slope is arranged on the second sliding rod, a first standing point is arranged at the lower part of the slope, a second standing point is arranged at the upper part of the slope, and the first standing point and the second standing point are suitable for being respectively contacted with a limiting block when the first sliding rod moves so as to change the angle of the second sliding rod.

The beneficial effects of this application are: the application provides a motor terminal electrical testing equipment is through being provided with grafting portion to be connected with the motor that waits to detect through grafting portion, be provided with lifting unit in the top of grafting portion simultaneously, drive test head reciprocating motion from top to bottom through lifting unit, two contacts in messenger's grafting portion are connected with the power, and then realize the positive and negative rotation test of motor, simultaneously through being provided with first slide bar and second slide bar in placing the intracavity, and be provided with the stopper between first slide bar and second slide bar, make the rotation of second slide bar at certain angle in-process that reciprocates through the stopper, and be connected test head and second slide bar, make it and the synchronous rotation of second slide bar, and then change the contact position of conducting strip and contact, realize the positive and negative rotation test of motor.

In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

FIG. 1 is an overall schematic diagram of a motor terminal electrical measurement apparatus of the present application;

FIG. 2 is an enlarged schematic view of area A of FIG. 1;

FIG. 3 is an enlarged schematic view of the placement box of FIG. 1;

FIG. 4 is an enlarged schematic view of the compact of FIG. 3;

FIG. 5 is a schematic cross-sectional view of a test head;

FIG. 6 is an exploded view of the placement box of FIG. 1;

FIG. 7 is an enlarged schematic view of region B of FIG. 6;

FIG. 8 is a schematic diagram of the distribution of the test head and the lift assembly;

FIG. 9 is an exploded view of the lift assembly;

FIG. 10 is a schematic view of one of the lift assemblies of FIG. 8;

FIG. 11 is a schematic view showing a state of a moving process of the first slide bar and the second slide bar;

FIG. 12 is a schematic view of another moving process state of the first slide bar and the second slide bar;

wherein, each reference sign in the figure:

1. a test platform;

2. a support part; 21. a sliding table; 22. a first cylinder; 23. placing a box; 24. a motor;

25. a plug-in part; 2510. inserting a detection sleeve; 251. a loop bar; 252. a contact; 253. a placement groove;

3. a lifting assembly; 31. a support post; 32. an upper plate; 33. a second cylinder; 34. a lifting platform; 35. a pressing plate; 36. briquetting; 37. a sealing block; 38. a test head;

361. a receiving hole; 362. a step surface;

381. a bump; 382. a first slide bar; 383. a first guide groove; 384. a second slide bar; 385. a limit rod; 386. a limiting block; 387. a first spring; 388. a sloping block; 389. a ramp; 390. a second guide groove; 391. a support rod; 392. a second spring; 393. a first dwell point; 394. a second dwell point; 395. positioning holes; 396. a fixed rod; 397. a conductive sheet; 398. placing a block; 399. and a contact cavity.

Detailed Description

It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.

In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

As shown in fig. 1-2 and 6-7, the present application provides a motor terminal electrical testing device, which is mainly used for performance detection of a motor 24, wherein the motor 24 suitable for the electrical testing device is provided with a plug-in part 25, and the plug-in part 25 is used for connecting with a driving board of the motor 24 in normal use and is used for connecting with a detection circuit in detection;

embodiment one:

the electrical testing equipment comprises a testing platform 1, wherein a supporting part 2 is arranged on the testing platform 1, and the supporting part 2 is used for supporting a motor 24 to be tested;

in order to move the motor 24 to the testing station, the supporting portion 2 includes a sliding table 21, the sliding table 21 is slidably connected with the testing platform 1, and a first cylinder 22 is connected to the sliding table 21, and the first cylinder 22 is adapted to drive the sliding table 21 to slide on the testing platform 1 so as to move the sliding table 21 to the testing station;

as shown in fig. 2, the sliding table 21 is provided with a placement box 23, the placement box 23 is provided with a placement cavity for placing a motor 24 to be tested, and the upper end of the placement box 23 is provided with an opening, and the opening is suitable for exposing a plug-in part 25 of the motor 24 so as to facilitate testing;

as shown in fig. 6-7, the electrical measurement device further comprises a plug detection sleeve 2510, the shape of the plug detection sleeve 2510 is consistent with that of the plug part 25 of the motor 24, a plurality of sleeve rods 251 are arranged inside the plug detection sleeve 2510, the number and the positions of the sleeve rods 251 are consistent with those of the terminals in the plug part 25 of the motor 24, and the sleeve rods 251 can be sleeved on the terminals of the motor 24;

before the motor is electrically tested, a previous process is needed, the plug detection sleeve 2510 is inserted into the plug portion 25 of the motor 24, and each sleeve rod 251 is in contact with a terminal of the motor 24, in this process, the plug detection sleeve 2510 can be placed by means of a manipulator, manual placement and the like, and the process is a mature prior art and is a common technology in the field, and redundant description is not needed;

the sleeve rods 251 are made of insulating materials, the sleeve rods 251 are sleeved on the terminals in the plug-in part 25 of the motor 24, each sleeve rod 251 is provided with a contact 252, and each contact 252 is supported by the conductive materials and is electrically connected with the terminals of the motor 24; in the present embodiment, the number of the loop bars 251 is four, and the four loop bars 251 are uniformly distributed in a square, and two loop bars 251 on the diagonal of the square are taken as a group;

the contacts 252 on the same group of loop bars 251 have the same height in the horizontal direction, the contacts 252 on each group of loop bars 251 have different heights compared with the contacts 252 on the other group of loop bars 251, after one group of contacts 252 are powered on, the motor 24 rotates, and after the other group of contacts 252 are powered on, the motor 24 rotates reversely, so that after the contacts 252 with different heights are contacted with a power supply in a detection circuit, the motor 24 can realize forward and reverse rotation;

in this embodiment, it is defined that the motor is rotated in the forward direction after the power supply in the detection circuit is in contact with the contact 252 having a high height, and is rotated in the reverse direction after the power supply in the detection circuit is in contact with the contact 252 having a low height.

Since the motor can realize forward and reverse switching after the contacts 252 with different heights are connected with the power supply, the power supply needs to reciprocate along the vertical direction, so that the forward and reverse rotation test of the motor 24 is realized, as shown in fig. 1, the test platform 1 is further provided with a lifting assembly 3, the lifting assembly 3 comprises a plurality of support posts 31, the support posts 31 are fixedly arranged on the test platform 1, an upper plate 32 is fixedly arranged on the support posts 31, a second air cylinder 33 is fixedly arranged on the upper plate 32, the output end of the second air cylinder 33 is arranged towards the direction of the test platform 1, and a lifting platform 34 is fixedly arranged at the output end of the second air cylinder 33, and the lifting platform 34 is suitable for reciprocating along the vertical direction under the driving of the second air cylinder 33;

as shown in fig. 2-4, a pressing plate 35 is fixedly installed on the lifting platform 34, the pressing plate 35 is suitable for moving synchronously with the lifting platform 34, a pressing block 36 is arranged below the pressing plate 35, the pressing block 36 is provided with a containing hole 361, a test head 38 is arranged in the containing hole 361, the test head 38 is electrically connected with a detection circuit, a step surface 362 is arranged in the containing hole 361, a bump 381 is arranged on the test head 38, the size of the bump 381 is matched with the size of the step surface 362, and after the test head 38 is placed in the containing hole 361, the bump 381 contacts with the step surface 362, so that the test head 38 is limited, and meanwhile, the test head 38 is fixed;

the accommodating hole 361 is further internally provided with a sealing block 37, the size of the sealing block 37 is the same as that of the stepped surface 362, and after the sealing block 37 is placed in the accommodating hole 361, the sealing block 37 can be contacted with the protruding block 381 on the test head 38, so that the test head 38 can be limited in the moving process of the lifting platform 34, and the test head 38 is prevented from being shifted to affect the normal test.

As shown in fig. 5 and fig. 7-fig. 8, the test head 38 is provided with a contact cavity 399, the contact cavity 399 is a cylindrical cavity, a circle is formed by taking the outer diameters of the four loop bars 251 as boundaries, and the diameter of the contact cavity 399 is larger than the diameter of the circle formed by combining the four loop bars 251, namely, after the test head 38 is inserted into the insertion detection sleeve 2510, the contact cavity 399 can accommodate the loop bars 251 therein;

a placement block 398 is arranged in the center of the contact cavity 399, the placement block 398 is also cylindrical, the placement block 398 is provided with a placement cavity penetrating through the test head 38, the side surface of the placement block 398 is provided with a plurality of conducting plates 397, the conducting plates 397 are connected with a power supply in a detection circuit, the number of the conducting plates 397 is consistent with that of the contacts 252 on the sleeve rod 251, the setting height of the conducting plates 397 is matched with that of the contacts 252, and each conducting plate 397 can be contacted with the contacts 252 at corresponding positions after the test head 38 is inserted into the plug-in detection sleeve 2510;

during detection, the second air cylinder 33 needs to be controlled to be started, the output shaft of the second air cylinder 33 can push the lifting assembly 3 to move along the vertical direction so as to drive the pressing plate 35 to move, in the downward moving process, the pressing plate 35 drives the test head 38 to move downwards and enter the plug-in part 25, the conducting plate 397 in the test head 38 can be contacted with the contact 252 with higher position firstly, at the moment, the motor 24 and the power supply in the detection circuit form a complete loop, and the motor 24 starts to rotate positively; after the forward rotation test is completed, the second air cylinder 33 continues to drive the lifting assembly 3 to move, the test head 38 is driven to move further towards the inside of the plug-in part 25, the conducting plate 397 in the test head 38 is separated from the contact 252 with higher position, the motor stops rotating forward and contacts with the contact 252 with lower position in the moving process, at the moment, the motor 24 forms a complete loop with the power supply in the detection circuit again, and the motor 24 starts rotating reversely;

in this embodiment, in order to implement the forward and reverse rotation test of the motor 24, the socket portion 25 is provided on the motor 24, and the contacts 252 with different heights are provided in the socket portion 25, and the contacts 252 with different heights respectively correspond to the forward and reverse connection mode of the motor 24, when the forward and reverse rotation test is required, only the second cylinder 33 is required to drive the test head 38 connected with the power supply to move towards the inside of the socket portion 25, and the conductive pads 397 in the test head 38 are respectively contacted with the contacts 252 with different heights, so that the forward and reverse rotation test of the motor 24 can be implemented, which is higher than the forward and reverse rotation test efficiency by manually changing the electrodes of the motor 24.

Embodiment two:

in the first embodiment, the second cylinder 33 drives the test head 38 to contact with the contacts 252 with different heights, so as to realize the forward and reverse rotation test of the motor 24, and in the actual test process, the motor 24 needs to be subjected to the instantaneous reversing test, that is, the steering of the motor 24 needs to be frequently changed in a short time, in the first embodiment, the steering of the motor 24 is changed by driving the second cylinder 33 with a certain delay, so that the steering of the motor 24 cannot be quickly and frequently replaced, and therefore, the position of the contacts 252 and other components need to be optimized, and the specific steps are that:

in this embodiment, the contacts 252 on the loop bar 251 are not of different heights, but are disposed towards the center of the plug-in detection sleeve 2510, and the contacts 252 on each set of loop bars 251 are symmetrically distributed, so that when the contacts 252 of different sets are connected with the power supply in the detection circuit, the motor 24 will rotate forward or backward;

to rotate the test head 38 such that the conductive pads 397 are in contact with the different contacts 252 to effect forward or reverse rotation of the motor 24, as shown in fig. 8-9, a first slide bar 382 is inserted into the test head 38, the first slide bar 382 is positioned in the placement cavity, and an upper end surface of the first slide bar 382 protrudes out of the test head 38, the protruding portion is connected to the sealing block 37, and when the second cylinder 33 drives the lifting assembly 3 to move downward, the sealing block 37 applies downward pressure to the first slide bar 382 and drives the first slide bar 382 to move downward;

the first sliding rod 382 is provided with a first guide groove 383, meanwhile, the first sliding rod 382 is provided with an inner cavity, a limiting rod 385 is arranged in the inner cavity, the limiting rod 385 is provided with a limiting block 386, the limiting block 386 is symmetrically arranged, the width of the limiting block 386 is consistent with that of the first guide groove 383, the bottom of the limiting block 386 is provided with an inclined block 388, and a first spring 387 is arranged between the top of the limiting block 386 and the inner cavity of the first sliding rod 382;

the test head 38 is also provided with a second slide bar 384 matched with the first slide bar 382, the lower end of the first slide bar 382 is provided with four groups of tooth blocks which are uniformly distributed in the axial direction of the first slide bar 382, and the tooth blocks have the same inclination with the inclined blocks 388 and the upper end faces of the second slide bar 384, so that the upper end face of the second slide bar 384 can be contacted with the lower end face of the first slide bar 382, the second slide bar 384 is provided with a second guide groove 390 with the specification consistent with that of the first guide groove 383, the first guide grooves 383 are arranged in pairs, and the first slide bar 382 is divided into the same two parts by a pair of first guide grooves 383;

a supporting rod 391 is arranged below the second sliding rod 384, the supporting rod 391 is sleeved with the second sliding rod 384, and a second spring 392 is sleeved on the supporting rod 391, as shown in fig. 6, a placing groove 253 matched with the supporting rod 391 is arranged in the plug-in part 25, the placing groove 253 is used for placing the supporting rod 391 and fixing the supporting rod 391, in other embodiments, the supporting rod 391 can be also provided as a square rod, and the corresponding placing groove 253 is a square groove, so that after the supporting rod 391 is placed in the placing groove 253, the supporting rod 391 can be fixed by the placing groove 253 and cannot rotate;

as shown in fig. 8, the second sliding rod 384 is provided with a slope 389, the lower part of the slope 389 is provided with a first residence point 393, the upper part of the slope 389 is provided with a second residence point 394, when the first sliding rod 382 is connected with the second sliding rod 384, a limiting block 386 on the limiting rod 385 enters into the first guiding groove 383, at the moment, the inclined block 388 is contacted with the first residence point 393, when the second air cylinder 33 is driven to drive the lifting assembly 3 to move downwards, the test head 38 is pressed to move downwards, and then the first sliding rod 382 and the second sliding rod 384 are driven to move downwards, and in the process of moving downwards, the test head 38 is inserted into the inserting part 25, a conductive sheet 397 in the test head 38 is contacted with one group of contacts 252, and at the moment, the motor 24 starts to rotate towards one direction;

as shown in fig. 11, in the above process, the second spring 392 is compressed, the limiting block 386 slides towards the first guiding groove 383, after the limiting block 386 completely enters the first guiding groove 383, the inclined block 388 contacts with the second standing point 394 on the adjacent slope 389, and under the support of the elastic force of the second spring 392, the second sliding rod 384 moves upwards, and the bottom of the limiting block 386 is not contacted with the previous slope 389 and loses the limit of the former slope 389 because the inclined block 388 on the limiting block 386 is in contact with the second standing point 394, so that during the upward movement of the second sliding rod 384, the limiting block 386 rotates towards the higher side of the slope 389 and drives the test head 38 to synchronously rotate for a distance, so that the second standing point 394 contacts with the side wall of the first guiding groove 383;

when the first slide bar 382 is pressed again, since the inclined block 388 is located on the slope 389 at this time, the second slide bar 384 will continue to rotate toward the higher side of the slope 389 during the movement until the inclined block 388 contacts the first stagnation point 393 on the slope 389, at which time the second guide groove 390 rotates to the same position as the first guide groove 383, and the test head 38 further rotates;

as shown in fig. 12, when the second cylinder 33 is driven to move upwards, the pressure applied to the first sliding rod 382 is gradually reduced, and at the same time, the elastic force generated when the second spring 392 is compressed drives the second sliding rod 384 to slide in a direction away from the plug-in portion 25, and during the sliding process, the stopper 386 enters the second guiding groove 390 from the first guiding groove 383 due to the fact that the vertical positions of the first guiding groove 383 and the second guiding groove 390 are the same, which is shown in fig. 10;

in the above process, the second sliding rod 384 is pressed by the inclined block 388 on the first sliding rod 382, and rotates again to drive the test head 38 to rotate synchronously, the inclined block 388 is connected with the second standing point 394, and in the rotating process, the conductive sheet 397 in the test head 38 contacts with the other set of contacts 252 in the socket 25, and the motor 24 starts to rotate in the opposite direction;

in order to rotate the test head 38 and further rotate the conductive plate 397 arranged in the test head 38, so as to realize that the conductive plate 397 contacts with the contacts 252 with different angles, thereby realizing the forward and reverse rotation of the motor 24, as shown in fig. 8, a positioning hole 395 is arranged on the side surface of the test head 38, the positioning hole 395 penetrates through the test head 38, meanwhile, a positioning hole 395 with the same specification is arranged at the corresponding position of the second sliding rod 384, a fixing rod 396 is arranged in the positioning hole 395, and the test head 38 and the second sliding rod 384 are fixed through the cooperation of the fixing rod 396 and the positioning hole 395, so that when the second sliding rod 384 rotates, the test head 38 synchronously rotates, further the conductive plate 397 in the test head 38 rotates to contact with different contacts 252, and the forward and reverse rotation of the motor 24 is realized;

in this embodiment, by providing the first sliding rod 382 and the second sliding rod 384, and providing the limiting rod 385 between the first sliding rod 382 and the second sliding rod 384, the inclined block 388 is provided on the first sliding rod 382, and the pressure of the inclined block 388 acts on the inclined slope 389 to convert the vertical force into the rotational force, so as to drive the second sliding rod 384 to rotate, and drive the test head 38 fixed with the second sliding rod 384 to rotate synchronously, so that the conductive sheet 397 contacts with different contacts 252, and forward and reverse rotation of the motor 24 are realized.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The utility model provides a motor terminal electricity test equipment, is applied to in the rotation test of motor, this motor has grafting portion (25), has the terminal in this grafting portion (25), the terminal is used for grafting power to test motor, its characterized in that: the motor terminal electrical testing apparatus includes:

a placement section for placing a motor to be detected;

the lifting assembly (3) is arranged above the plug-in part (25), and the lifting assembly (3) is suitable for reciprocating motion along the vertical direction;

a test head (38), wherein a conducting plate (397) is arranged in the test head (38), and the conducting plate (397) is electrically connected with a detection power supply;

the plug-in portion (25) includes:

at least two contacts (252), wherein the two contacts (252) are arranged at different positions, and the connection polarity of the two contacts (252) and the motor is opposite;

wherein: in the moving process of the lifting assembly (3), the test head (38) is driven to be connected with different contacts (252) in the plug-in part (25), so that the forward and reverse rotation test of the motor is realized.

2. The motor terminal electrical measurement apparatus according to claim 1, wherein: the socket is characterized in that a socket detection sleeve (2510) is arranged on the socket part (25), the shape of the socket detection sleeve (2510) is consistent with that of the socket part (25), at least four groups of sleeve rods (251) are arranged in the socket detection sleeve (2510), the four groups of sleeve rods (251) are combined to form a circle, the position of the sleeve rod (251) is consistent with the position of a terminal in the socket part (25), and the sleeve rod (251) is suitable for being sleeved on the terminal of the motor (24).

3. The motor terminal electrical measurement apparatus according to claim 2, wherein: a contact cavity (399) is formed in the test head (38), the contact cavity (399) is a cylindrical cavity, and the diameter of the contact cavity (399) is larger than that of a circle formed by combining four loop bars (251);

wherein: after insertion of the test head (38) into the socket detection sleeve (2510), the contact cavity (399) is adapted to receive a sleeve rod (251) therein.

4. A motor terminal electrical testing apparatus according to claim 3, wherein: a placement block (398) is arranged in the center of the contact cavity (399), the placement block (398) is cylindrical, the placement block (398) is provided with a placement cavity penetrating through the test head (38), and the conductive sheet (397) is arranged on the side face of the placement block (398).

5. The motor terminal electrical measurement apparatus according to claim 4, wherein: the first sliding rod (382) is inserted into the placing cavity, the upper end face of the first sliding rod (382) protrudes out of the testing head (38) to be arranged, the upper end face of the first sliding rod (382) is connected with the lifting assembly (3), and when the lifting assembly (3) moves downwards, downward force is given to the first sliding rod (382) to drive the first sliding rod (382) to move downwards.

6. The motor terminal electrical measurement apparatus according to claim 5, wherein: the first sliding rod (382) is provided with a first guide groove (383), the first sliding rod (382) is provided with an inner cavity, a limiting rod (385) is arranged in the inner cavity, the limiting rod (385) is provided with a limiting block (386), the limiting block (386) is symmetrically arranged, the width of the limiting block (386) is consistent with that of the first guide groove (383), the bottom of the limiting block (386) is provided with an inclined block (388), and a first spring (387) is arranged between the top of the limiting block (386) and the inner cavity of the first sliding rod (382).

7. The motor terminal electrical measurement apparatus according to claim 5, wherein: the placing cavity is internally provided with a second sliding rod (384) matched with the first sliding rod (382), the upper end face of the second sliding rod (384) is contacted with the lower end face of the first sliding rod (382), and the second sliding rod (384) is provided with a second guide groove (390) with the specification consistent with that of the first guide groove (383).

8. The motor terminal electrical measurement apparatus according to claim 7, wherein: the lower part of the second sliding rod (384) is sleeved with a supporting rod (391), the supporting rod (391) is sleeved with the second sliding rod (384), the supporting rod (391) is sleeved with a second spring (392), and the supporting rod (391) is used for supporting the second sliding rod (384).

9. The motor terminal electrical measurement apparatus according to claim 8, wherein: the second sliding rod (384) is provided with a slope (389), the lower part of the slope (389) is provided with a first standing point (393), the upper part of the slope (389) is provided with a second standing point (394), and the first standing point (393) and the second standing point (394) are suitable for being respectively contacted with a limiting block (386) when the first sliding rod (382) moves so as to change the angle of the second sliding rod (384).