Motor test accompanying device and motor test system

Abstract

The utility model belongs to the technical field of permanent magnet system auxiliary test equipment, and discloses a motor test accompanying device and a motor test system. The device comprises an accompanying test box body and a transmission mechanism. The transmission mechanism is arranged in the accompanying test box body, and the accompanying test box body is used for protecting the transmission mechanism; the transmission mechanism comprises an output end and a plurality of input ends, the output end is connected to the dynamometer, each input end is in transmission connection with the output end, and the plurality of input ends have different rotating speeds so as to be used for installing a plurality of test motors with different rotating speeds; according to the motor test accompanying device, loading tests of various test motors with different rotating speeds can be met through one motor test accompanying device, the application range of the motor test accompanying device is widened, the number of accompanying devices used for testing the test motors is reduced, the test cost is reduced, resource waste is avoided, and meanwhile the test efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to permanent magnet system auxiliary test equipment technical field especially relates to a motor test accompanying test device and motor test system. BACKGROUND

[0002] With the continuous implementation of "green low carbon, energy saving and emission reduction" policy, the continuous development of direct drive and semi-direct drive technology, various equipment permanent magnet variable frequency integrated machine emerges in endlessly, its main performance is that torque span is big, output speed range is wide, therefore needs to carry out loading test to these different permanent magnet systems.

[0003] The traditional loading test needs to use two high-power frequency converters, two high-power frequency converters control a motor respectively, one of the motors is a tested motor, used as a motor, the other motor is an accompanying test motor, used as a generator, and the tested motor and the accompanying test motor both have corresponding test boxes. However, the traditional accompanying test box structure of the accompanying test motor can only meet the power loading of one-to-one accompanying test motor, and cannot meet the testing needs of the same device for motors with different torques and different output speeds, which requires the manufacture of more accompanying test box bodies, resulting in resource waste and huge manufacturing cost.

[0004] Therefore, an urgent need exists for a motor test accompanying test device and motor test system to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] One purpose of the utility model is to provide a motor test accompanying test device, which can realize power testing of test motors with different speeds, greatly reduce the number of accompanying test boxes, reduce resource waste, and achieve the effect of reducing cost and increasing efficiency.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The motor test accompanying test device comprises:

[0008] An accompanying test box body;

[0009] A transmission mechanism, the transmission mechanism is arranged in the accompanying test box body, the transmission mechanism comprises an output end and a plurality of input ends, the output end is connected to a dynamometer, each input end is in transmission connection with the output end, and the speeds of the plurality of input ends are different, so as to install test motors with different speeds.

[0010] Optionally, the output end and the input end both extend out of the accompanying test box body, and the output end and the input end extend out of the two opposite side walls of the accompanying test box body respectively.

[0011] Optionally, the transmission mechanism comprises a plurality of transmission shafts, the plurality of transmission shafts are sequentially connected in transmission, rotation speeds of the plurality of transmission shafts are different, and each of the transmission shafts is provided with the input end; one of the plurality of transmission shafts is provided with the output end.

[0012] Optionally, two adjacent transmission shafts are connected in transmission through gears.

[0013] Optionally, the transmission shaft provided with the output end among the plurality of transmission shafts is configured as an output shaft, and the transmission shaft with a transmission ratio greater than 1 to the output shaft is configured to be selectively connected in transmission with the output shaft.

[0014] Optionally, a first gear is arranged on the output shaft in a sleeving mode, a second gear is fixedly connected to the transmission shaft with a transmission ratio greater than 1 to the output shaft, and the first gear and the second gear are connected in meshing.

[0015] The motor test accompanying test device further comprises a shift fork shifting mechanism, the shift fork shifting mechanism is connected in transmission with the output shaft, and the shift fork shifting mechanism can move along the axial direction of the output shaft, so that the first gear and the shift fork shifting mechanism are connected in transmission or disconnected.

[0016] Optionally, the first gear and the output shaft are connected through a rolling bearing.

[0017] Optionally, the first gear comprises a first toothed portion and a second toothed portion, the first toothed portion is connected in meshing with the second gear, the second toothed portion is arranged at one end of the first toothed portion, the second toothed portion is connected in meshing with the shift fork shifting mechanism.

[0018] Optionally, the shift fork shifting mechanism comprises:

[0019] an inner gear ring, the inner gear ring is fixedly connected to the output shaft;

[0020] an outer gear ring, the outer gear ring is connected in meshing with the inner gear ring;

[0021] a shifting rod, one end of the shifting rod extends out of the accompanying test box body, the other end of the shifting rod is fixed to the outer gear ring, and the shifting rod is used to drive the outer gear ring to move along the axial direction of the output shaft, so that part of the outer gear ring is connected in meshing with the first gear.

[0022] Another purpose of the utility model is to provide a motor test system comprising the motor test accompanying test device.

[0023] The utility model has the advantages of:

[0024] The utility model provides a kind of motor test accompanying test device and motor test system, by being provided with multiple different rotational speed input ends on transmission mechanism, the access of multiple different rotational speed test motor can be realized, and through same output end connection dynamometer, the power test to test motor is realized;So the power test of multiple different rotational speed test motor can be satisfied by one motor test accompanying test device, the application range of the motor test accompanying test device is improved, the quantity of accompanying test device when testing test motor is reduced, test cost is reduced, resource waste is avoided, and test efficiency is also improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the sectional view that high speed transmission shaft in the motor test accompanying test device provided by the utility model embodiment is in idle state;

[0026] Figure 2 It is Figure 1 The local enlarged view of A in

[0027] Figure 3 It is the sectional view that high speed transmission shaft in the motor test accompanying test device provided by the utility model embodiment is in idle state;

[0028] Figure 4 It is Figure 3 The local enlarged view of B in

[0029] In the drawing:

[0030] 10, accompanying test box body;

[0031] 20, transmission mechanism;201, input end;202, output end;21, transmission shaft;22, output shaft;23, first gear;231, first tooth profile;232, second tooth profile;24, second gear;25, rolling bearing;26, connecting gear;

[0032] 30, shift fork gearshift mechanism;31, inner ring gear;32, outer ring gear;33, shift lever;

[0033] 40, dynamometer. DETAILED DESCRIPTION

[0034] The utility model will be further explained in detail in connection with the drawings and examples.It can be understood that the specific examples described here are only used to explain the utility model, and not limit the utility model.In addition, it needs to be explained that, for convenient description, only relevant part in the drawings is shown instead of all structure.

[0035] In the description of the utility model, unless another definite provision and limitation, the term "link", "connect", "fix" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be direct connection, also can be indirectly connected through the intermediate medium, can be two elements inside the communication or two elements of the interaction relationship.For the ordinary skill in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0036] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can include the first and second features direct contact, also can include the first and second features are not direct contact but contact through the additional features between them.Moreover, the first feature is "on", "above" and "on" the second feature includes the first feature is directly above and obliquely above the second feature, or just indicates that the horizontal height of the first feature is higher than the second feature.The first feature is "under", "below" and "under" the second feature includes the first feature is directly below and obliquely below the second feature, or just indicates that the horizontal height of the first feature is less than the second feature.

[0037] In the description of the embodiment, the terms "on", "under", "left", "right", etc. Orientation or position relationship is based on the orientation or position relationship shown in the drawing, only for the convenience of description and simplification operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model.In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0038] The following refers to Figures 1 to 4 The utility model provides a motor test accompanying test device and motor test system are introduced.

[0039] Please refer to Figure 1 And Figure 3 The embodiment provides a kind of motor test accompanying test device, it includes accompanying test box body 10 and transmission mechanism 20;Transmission mechanism 20 is set in accompanying test box body 10, accompanying test box body 10 is used to protect transmission mechanism 20;Transmission mechanism 20 includes output end 202 and multiple input ends 201, output end 202 is connected to dynamometer 40, each input end 201 is transmissionally connected with output end 202, the rotating speed of multiple input ends 201 is different, to install multiple different rotating speed test motor.

[0040] The motor test accompanying test device in the embodiment can realize the connection of multiple test motors with different rotating speeds through the multiple input ends 201 with different rotating speeds arranged on the transmission mechanism 20, and realize the loading test of the test motor through the same output end 202 connected with the dynamometer 40. Thus, the loading test of multiple test motors with different rotating speeds can be realized through one motor test accompanying test device, the application range of the motor test accompanying test device is improved, the number of accompanying test devices for the test of the test motor is reduced, the test cost is reduced, resource waste is avoided, and the test efficiency is improved.

[0041] Optionally, the output end 202 and the input end 201 both extend out of the accompanying test box body 10, and the output end 202 and the input end 201 extend out of the two opposite side walls of the accompanying test box body 10, respectively. In this way, the output end 202 and the input end 201 are distinguished, so as to avoid installation errors when the test motor and the dynamometer 40 are installed, and the test installation of the operating personnel is more convenient, and the error rate is reduced.

[0042] Specifically, the transmission mechanism 20 includes multiple transmission shafts 21, the multiple transmission shafts 21 are sequentially transmissionally connected, the rotating speeds of the multiple transmission shafts 21 are all different, and each transmission shaft 21 is provided with an input end 201. One of the multiple transmission shafts 21 is provided with an output end 202. Through the transmission connection of each transmission shaft 21, the linkage between each transmission shaft 21 can be realized, and too much axial space is not occupied.

[0043] Specifically, the transmission shaft 21 in the embodiment is provided with five transmission shafts 21, which are a first shaft, a second shaft, a third shaft, a fourth shaft and a fifth shaft. The first shaft, the second shaft, the third shaft, the fourth shaft and the fifth shaft are all provided with input ends 201, and the fourth shaft is further provided with an output end 202 to connect the dynamometer 40. The rotating speeds of the first shaft to the fifth shaft gradually increase and are 95 revolutions, 240 revolutions, 600 revolutions, 1500 revolutions and 3000 revolutions, respectively, which covers the rotating speed range of the commonly used test motor and has a wide application range. Of course, in other embodiments, the transmission shaft 21 and the rotating speed thereof can be added, reduced or changed according to actual needs, which is not limited here.

[0044] Further, two adjacent transmission shafts 21 are transmissionally connected through gears, so as to form a multi-stage gear transmission system. The rotating speeds of the multiple transmission shafts 21 can be different, and any two of the multiple transmission shafts 21 can be transmissionally connected, so that the input ends 201 on each transmission shaft 21 can be transmissionally connected to the output end 202.

[0045] Exemplarily, the gear transmission connection is a meshing connection of the connecting gears 26 on the two adjacent transmission shafts 21, the connecting gears 26 can be fixed on the transmission shafts 21 through pins, or can be directly formed in the form of gear shafts by being integrally formed with the transmission shafts 21, and both can realize the gear transmission connection of the two, which is not specifically limited here.

[0046] Please refer to Figures 1 to 4 In the embodiment, the transmission shaft 21 provided with the output end 202 among the plurality of transmission shafts 21 is configured as the output shaft 22, i.e. the fourth shaft in the embodiment, and the transmission shaft 21 with the transmission ratio greater than 1 to the output shaft 22 is configured to be selectively in transmission connection with the output shaft 22, i.e. the fifth shaft in the embodiment can be selectively in transmission connection with the fourth shaft. Such arrangement is because after a test motor is installed and starts to be tested, other transmission shafts 21 will also rotate due to the transmission connection between the transmission shafts 21, and the transmission shaft 21 with the rotation speed greater than that of the output shaft 22 has too large rotation speed, which may cause power loss and bearing wear in long-term operation. Therefore, the transmission shaft 21 with the transmission ratio greater than 1 to the output shaft 22 is configured to be selectively in transmission connection with the output shaft 22, which not only ensures that it has the loading test capability for the test motor with greater rotation speed, but also ensures that the power loss and bearing wear of the transmission shaft 21 with high rotation speed are avoided when other test motors with low rotation speed are tested, thereby improving the service life of the transmission shaft 21 with high rotation speed and the transmission structure thereof.

[0047] Specifically, a first gear 23 is arranged on the output shaft 22 in a sleeving manner, a second gear 24 is fixedly connected to the transmission shaft 21 with the transmission ratio greater than 1 to the output shaft 22, and the first gear 23 and the second gear 24 are in meshing connection; the motor test companion test device further comprises a shift fork shifting mechanism 30, the shift fork shifting mechanism 30 is in transmission connection with the output shaft 22, and the shift fork shifting mechanism 30 can move along the axial direction of the output shaft 22 to enable the first gear 23 and the shift fork shifting mechanism 30 to be in transmission connection or disconnected, so as to realize the selective transmission connection between the transmission shaft 21 with the transmission ratio greater than 1 to the output shaft 22 and the output shaft 22. Specifically, when the test motor is installed on the transmission shaft 21 with low rotation speed for testing, the shift fork shifting mechanism 30 is in neutral state, i.e. the shift fork shifting mechanism 30 is not in transmission connection with the first gear 23, so that the transmission shaft 21 with high rotation speed is in idle state, and when the test motor with high rotation speed needs to be tested, the shift fork shifting mechanism 30 is in transmission connection with the first gear 23, so that the transmission connection between the transmission shaft 21 with high rotation speed and the output shaft 22 is realized, thereby realizing the test of the test motor with high rotation speed.

[0048] Specifically, the first gear 23 and the output shaft 22 are connected through the rolling bearing 25, so that the first gear 23 can be connected with the output shaft 22 in position, and when the output shaft 22 rotates, the first gear 23 cannot rotate, so that the first gear 23 can be connected with the output shaft 22 in transmission only through the shift fork shifting mechanism 30.

[0049] More specifically, the first gear 23 includes a first toothed portion 231 and a second toothed portion 232, the first toothed portion 231 and the second gear 24 are engagedly connected, and the second toothed portion 232 is arranged at one end of the first toothed portion 231 towards the shift fork shifting mechanism 30, and the second toothed portion 232 can be engagedly connected with the shift fork shifting mechanism 30. That is, the transmission connection of the first gear 23 with the second gear 24 and the shift fork shifting mechanism 30 can be realized.

[0050] Specifically, the shift fork shifting mechanism 30 includes an inner ring gear 31, an outer ring gear 32 and a shifting lever 33, the inner ring gear 31 is fixedly connected to the output shaft 22, the outer ring gear 32 is engagedly connected with the inner ring gear 31, and one end of the shifting lever 33 extends out of the test box body 10, and the other end is fixed with the outer ring gear 32, the shifting lever 33 is used to drive the outer ring gear 32 to move along the axial direction of the output shaft 22, so that part of the outer ring gear 32 is engagedly connected with the first gear 23. The outer ring gear 32 is driven by the shifting lever 33, so that the outer ring gear 32 can be in a state of being completely engaged with the inner ring gear 31, or part of the outer ring gear 32 can be engaged with the inner ring gear 31 and the other part can be engaged with the first gear 23, so as to realize the idle state or the transmission connection state between the transmission shaft 21 and the output shaft 22, and the transmission ratio of the transmission shaft 21 and the output shaft 22 is greater than 1.

[0051] The embodiment also provides a motor test system, which comprises the motor test device according to any one of the above-mentioned schemes. By adopting the motor test device, the test of various test motors with different rotating speeds can be met, the adaptability and test efficiency are improved, and the test cost is reduced.

[0052] Obviously, the above-mentioned embodiments of the utility model are only examples for clearly explaining the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the utility model. Here, it is unnecessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. An electric motor test companion device, characterized in that, The utility model relates to an electric machine test device, including: A test box (10); Transmission mechanism (20), transmission mechanism (20) is arranged in test box (10), transmission mechanism (20) includes output end (202) and multiple input end (201), output end (202) is connected to dynamometer (40), each input end (201) is connected with output end (202) transmission, and the rotational speed of multiple input end (201) is different, for installing multiple different rotational speed test motor.

2. The motor test companion device of claim 1, wherein, Output end (202) and input end (201) all extend test box (10), and output end (202) and input end (201) respectively extend in opposite two side walls of test box (10).

3. The motor test companion device of claim 2, wherein, Transmission mechanism (20) includes multiple transmission shafts (21), and multiple transmission shafts (21) are sequentially connected, and the rotational speed of multiple transmission shafts (21) is different, and each transmission shaft (21) is equipped with input end (201);One of multiple transmission shafts (21) is equipped with output end (202).

4. The motor test companion device of claim 3, wherein, Adjacent two transmission shafts (21) are connected through gear transmission.

5. The motor test companion device of claim 3, wherein, The transmission shaft (21) of multiple transmission shafts (21) and the output end (202) are configured as output shaft (22), and the transmission ratio of the transmission shaft (21) greater than 1 with the output shaft (22) is configured to selectively drive connection with the output shaft (22).

6. The motor test companion device of claim 5, wherein, The first gear (23) is sleeved on the output shaft (22), the second gear (24) is fixedly connected on the transmission shaft (21) with the transmission ratio greater than 1 with the output shaft (22), and the first gear (23) and the second gear (24) are meshed connection; The electric machine test device further includes a shift fork shifting mechanism (30), the shift fork shifting mechanism (30) is drive connected to the output shaft (22), and the shift fork shifting mechanism (30) can move along the axial direction of the output shaft (22) to drive the first gear (23) and the shift fork shifting mechanism (30) to be connected or disconnected.

7. The motor test companion device of claim 6, wherein, The first gear (23) and the output shaft (22) are connected through a rolling bearing (25).

8. The motor test companion device of claim 7, wherein, The first gear (23) includes a first tooth profile (231) and a second tooth profile (232), the first tooth profile (231) and the second gear (24) are meshed connection, the second tooth profile (232) is arranged on one end of the first tooth profile (231) towards the shift fork shifting mechanism (30), and the second tooth profile (232) can be meshed with the shift fork shifting mechanism (30).

9. The motor test companion device of claim 6, wherein, The shift fork shifting mechanism (30) includes: An inner gear ring (31) is fixedly connected to the output shaft (22); An outer gear ring (32) is meshed with the inner gear ring (31); A toggle lever (33) extends from the test box (10) at one end and is fixed to the outer ring (32) at the other end. The toggle lever (33) is used to drive the outer ring (32) to move along the axial direction of the output shaft (22) so that the part of the outer ring (32) is engaged with the first gear (23).

10. An electrical machine testing system characterised in that, The motor test device comprises the motor test device as claimed in any one of claims 1-9.

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