CN211121342U - Frameless permanent magnet synchronous motor testing device - Google Patents
Frameless permanent magnet synchronous motor testing device Download PDFInfo
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- CN211121342U CN211121342U CN201921999756.6U CN201921999756U CN211121342U CN 211121342 U CN211121342 U CN 211121342U CN 201921999756 U CN201921999756 U CN 201921999756U CN 211121342 U CN211121342 U CN 211121342U
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Abstract
The utility model discloses a frameless PMSM testing device, which comprises a machine seat plate, wherein a supporting frame, a support and a base are sequentially arranged on the machine seat plate in parallel; a permanent magnet synchronous motor, a main shaft, a torque sensor, load equipment and an input shaft are respectively arranged above the permanent magnet synchronous motor, and two ends of the torque sensor are respectively connected with the input shaft and the main shaft through a coupler; the permanent magnet synchronous motor comprises a rotor component and a stator component which are oppositely arranged, wherein the rotor component comprises a rotor and a permanent magnet; the stator assembly is formed by combining a plurality of stator units in a sector structure, and each stator unit comprises a stator core and a stator winding wound on the stator core; the stator units are all arranged on the supporting frame; the testing device can detect the actual torque, the rotating speed, the power and other information of the permanent magnet synchronous motor and the load equipment in real time, and has high detection accuracy and good effect.
Description
Technical Field
The utility model relates to motor testing arrangement technical field, concretely relates to frameless formula PMSM testing arrangement.
Background
The permanent magnet synchronous motor mainly comprises a motor stator and a motor rotor, and can be applied to equipment such as engineering machinery, mining machinery, forging machinery and the like. However, the permanent magnet synchronous motor has the problems of control precision and inaccurate detection signal, and the performance of the motor directly affects the working efficiency of equipment, so that the accurate detection of parameters such as actual torque, rotating speed and power of the motor is very important.
And direct through arranging the sensor among the prior art detects, because arrangement structure's is unreasonable, motor output environment and structure are too complicated, lead to detecting the accuracy not high, also can influence the normal work efficiency of equipment simultaneously.
Disclosure of Invention
The utility model aims at providing a frameless formula PMSM testing arrangement to the problem that prior art exists.
In order to achieve the above object, the utility model adopts the following technical scheme:
a frameless permanent magnet synchronous motor testing device is provided with a machine base plate, wherein a supporting frame, a support and a base are sequentially arranged on the machine base plate in parallel; the base is provided with load equipment, and the load equipment is connected with an input shaft; a permanent magnet synchronous motor is arranged on the support frame, and a main shaft is connected to the permanent magnet synchronous motor; a torque sensor is arranged on the support, and two ends of the torque sensor are respectively connected with the input shaft and the main shaft through a coupler; the permanent magnet synchronous motor comprises a rotor assembly and a stator assembly which are oppositely arranged, wherein the rotor assembly comprises a rotor sleeved on the main shaft and permanent magnets which are uniformly distributed on the rotor around the main shaft; the stator assembly is formed by combining a plurality of stator units in a sector structure, and each stator unit comprises a stator core and a stator winding wound on the stator core; the stator units are all installed on the support frame.
According to the frameless permanent magnet synchronous motor testing device, the torque sensor is arranged between the main shaft and the input shaft, so that the output/input torque, the rotating speed, the power and other information of the main shaft or the input shaft (output shaft) can be detected in real time, the actual torque, the rotating speed, the power and other information of the permanent magnet synchronous motor and load equipment can be obtained, on one hand, the frameless permanent magnet synchronous motor testing device can be used for detecting and monitoring the real-time state of the permanent magnet synchronous motor, and on the other hand, the load equipment can be tested. The combined frameless permanent magnet synchronous motor can be used as a motor to operate and a load of a tested power machine to measure the output torque on a shaft of the tested machine; it can also be operated as a motor to pull a load device to measure the input torque on its shaft.
The permanent magnet synchronous motor is directly driven, an intermediate conversion link is not needed, and the rotor directly acts on the main shaft, so that the motor is high in efficiency and low in energy loss, the torque and the rotating speed are directly measured through the torque sensor, and the detection effect is good; and the rotating speed is easy to control, so that the excellent low-speed loading capacity can be provided, and the loading at high rotating speed can be realized. The detection device can detect information such as torque, rotating speed and power under various working conditions.
The stator assembly is formed by combining a plurality of stator units with sector structures, and when one of the stator units is damaged, one of the stator units can be replaced independently, so that the maintenance and the nursing of equipment are facilitated;
stator core directly installs through the mode of spiro union on the support frame, has reduced stator base's use, makes the structure of its installation simpler, and the no frame stator module is convenient for on the one hand assemble and dismantle, and on the other hand also can improve this PMSM's radiating effect, natural draft, rapid cooling reduces thermal gathering.
The support frame the support with the use of base is convenient for the position of the adjustment PMSM, torque sensor, load equipment that adapt to, makes the main shaft, torque sensor reaches keep better height and axiality between the input shaft, improves the accuracy that detects.
Further, the supporting frame is provided with a connecting bottom plate and a vertical mounting frame which are integrally formed; vertical mounting bracket is close to install one side of torque sensor the middle part of stator unit, opposite side is equipped with the cylinder, the tip of main shaft passes through bearing and nut movable mounting and is in the cylinder, the tip of cylinder is equipped with the gland, the encoder is installed outward to the gland, the encoder is connected PMSM.
The support frame has the functions of installing the permanent magnet synchronous motor and movably connecting the main shaft and the encoder, and is simple in structure and easy to assemble. The gland can limit the axial motion of the bearing, so that the axial movement of the main shaft is reduced, and the detection accuracy is improved.
Furthermore, inclined rib plates are arranged between two sides of the vertical mounting frame and the connecting bottom plate respectively, and the connecting bottom plate is in threaded connection with the machine seat plate. The inclined rib plates can strengthen the connection strength and the support strength of the support frame, so that the permanent magnet synchronous motor can stably run, and the detection accuracy and precision are ensured.
Further, the rotor assembly is coaxial with the main shaft, and the main shaft, the coupler and the input shaft are coaxial.
Further, the stator core is of a fan-shaped columnar structure, a flange edge is arranged on the periphery of the stator core, and the flange edge is in threaded connection with the support frame. The flange edge is arranged, so that the functional structure of the stator core is not influenced, and the flange edge can be used for connection and fixation. The gap between the stator assembly and the rotor assembly can be conveniently adjusted by adjusting the connecting bolts, and the good output state and efficiency of the permanent magnet synchronous motor are kept.
Furthermore, the permanent magnets are uniformly distributed on the outer side wall and/or the end face of the rotor, and the stator cores and the permanent magnets are arranged in a one-to-one correspondence mode.
Furthermore, a rotor connecting plate is further connected to the end face of the rotor in a threaded manner, and the rotor connecting plate is sleeved on the shaft shoulder of the spindle.
Further, the couplers are symmetrically arranged on two sides of the torque sensor.
Further, the main shaft is a stepped shaft, and a stepped hole axially matched with the step is formed in the inner circumferential surface of the rotor.
Furthermore, a key groove is formed in the main shaft, and the rotor is connected with the main shaft through a flat key.
Compared with the prior art, the beneficial effects of the utility model are that: 1. according to the frameless permanent magnet synchronous motor testing device, the torque sensor is arranged between the main shaft and the input shaft, so that the output/input torque, the rotating speed, the power and other information of the main shaft and the output shaft can be detected in real time, the actual torque, the rotating speed, the power and other information of the permanent magnet synchronous motor and load equipment can be obtained, and the frameless permanent magnet synchronous motor testing device can be used for detecting and monitoring the real-time state of the permanent magnet synchronous motor; 2. the frameless permanent magnet synchronous motor can be used as a motor to operate and a load of a tested power machine to measure the output torque on a shaft of the tested machine; the device can also be operated as a motor to drag load equipment so as to measure the input torque on a shaft of the load equipment; 3. the permanent magnet synchronous motor is used for direct drive, so that the intermediate conversion link is reduced, the rotor directly acts on the main shaft, the motor is high in efficiency and low in energy loss, the torque and the rotating speed are directly measured through the torque sensor, and the detection effect is good; 4. the motor rotating speed is easy to control, excellent low-speed loading capacity can be provided, and high-rotating-speed loading can be achieved, so that the detection device can detect information such as torque, rotating speed and power under various working conditions.
Drawings
Fig. 1 is a schematic view of an overall structure of a frameless pmsm testing apparatus according to the present invention;
fig. 2 is a schematic cross-sectional view at a-a of the frameless pmsm testing apparatus of the present invention;
fig. 3 is a schematic structural view of a stator assembly of the frameless pmsm testing apparatus of the present invention;
fig. 4 is a schematic view of an overall structure of another frameless pmsm testing apparatus according to the present invention;
fig. 5 is a schematic top view of another frameless pmsm testing apparatus according to the present invention;
in the figure: 1. a machine seat board; 2. a support frame; 3. a support; 4. a base; 5. a torque sensor; 6. a load device; 7. an input shaft; 8. a main shaft; 9. a coupling; 10. a stator unit; 1001. a stator core; 1002. a stator winding; 1003. a flange edge; 11. a rotor assembly; 1101. a rotor; 1102. a permanent magnet; 12. a rotor connecting plate; 13. a cylinder; 14. an encoder; 15. a gland; 16. a nut; 17. a bearing; 18. an inclined rib plate; 19. an encoder support; 20. a first bearing; 21. a second bearing; 23. a side bracket; 24. and adjusting the bolt.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1 and 2, a frameless permanent magnet synchronous motor testing device comprises a machine base plate 1 which is horizontally arranged, wherein a supporting frame 2, a support 3 and a base 4 are sequentially arranged on the machine base plate 1 in parallel; the base 4 is provided with a load device 6, and the load device 6 is connected with an input shaft 7; a permanent magnet synchronous motor is arranged on the support frame 2, and a main shaft 8 is connected to the permanent magnet synchronous motor; a torque sensor 5 is arranged on the support 3, and two ends of the torque sensor 5 are respectively connected with the input shaft 7 and the main shaft 8 through a coupler 9; the permanent magnet synchronous motor comprises a rotor assembly 11 and a stator assembly which are oppositely arranged, wherein the rotor assembly 11 comprises a rotor 1101 sleeved on the main shaft 8 and permanent magnets 1102 uniformly arranged on the rotor 1101 around the main shaft 8; the stator assembly is formed by combining a plurality of stator units 10 in a sector structure, wherein each stator unit 10 comprises a stator core 1001 and a stator winding 1002 wound on the stator core 1001; the stator units 10 are all mounted on the side wall of the support frame 2.
According to the frameless permanent magnet synchronous motor testing device, the torque sensor 5 is arranged between the main shaft 8 and the input shaft 7, so that the output/input torque, the rotating speed, the power and other information of the main shaft 8 and the input shaft 7 can be detected in real time, the actual torque, the rotating speed, the power and other information of the permanent magnet synchronous motor and the load equipment 6 can be obtained, on one hand, the frameless permanent magnet synchronous motor testing device can be used for detecting and monitoring the real-time state of the permanent magnet synchronous motor, and on the other hand, the load equipment 6 can be tested. The frameless permanent magnet synchronous motor can be used as a motor to operate and a load of a tested power machine to measure the output torque on a shaft of the tested machine; it can also be operated as a motor to pull a load device to measure the input torque on its shaft.
The permanent magnet synchronous motor is directly driven, an intermediate conversion link is omitted, and the rotor 1101 directly acts on the main shaft 8, so that the motor is high in efficiency and low in energy loss, the torque and the rotating speed are directly measured through the torque sensor 5, and the detection effect is good; and the rotating speed is easy to control, so that the excellent low-speed loading capacity can be provided, and the loading at high rotating speed can be realized. The detection device can detect information such as torque, rotating speed and power under various working conditions.
The stator assembly is formed by combining a plurality of stator units 10 with sector structures, when one of the stator units 10 is damaged, one of the stator units can be replaced independently, and therefore equipment can be maintained and cared more conveniently;
The support frame 2 the support 3 with the use of base 4, the position of the adjustment PMSM, torque sensor 5, load equipment 6 that are convenient for adapt to makes main shaft 8, torque sensor 5 and keep better height and axiality between the input shaft 7, improve the accuracy that detects.
Further, the supporting frame 2 is provided with a connecting bottom plate and a vertical mounting frame which are integrally formed; vertical mounting bracket is close to install one side of torque sensor 5 the middle part of stator unit 10, opposite side is equipped with cylinder 13, bearing 17 and nut 16 movable mounting are passed through to the tip of main shaft 8 in cylinder 13, the tip of cylinder 13 is equipped with gland 15, gland 15 installs encoder 14 outward, encoder 14 connects PMSM.
The support frame 2 has the functions of mounting the permanent magnet synchronous motor and movably connecting the main shaft 8 and the encoder 14, and is simple in structure and easy to assemble. The gland 15 can limit the axial left-right movement of the bearing 17, so that the axial movement of the main shaft 8 is reduced, and the detection accuracy is improved.
Furthermore, inclined rib plates 18 are arranged between two sides of the vertical mounting frame and the connecting bottom plate respectively, and the connecting bottom plate is in threaded connection with the machine seat plate 1. The inclined rib plate 18 can strengthen the connection strength and the support strength of the support frame 2, so that the permanent magnet synchronous motor can stably run, and the detection accuracy and precision are ensured.
Further, the rotor assembly 11 is coaxial with the main shaft 8, and the main shaft 8, the coupler 9 and the input shaft 7 are coaxial.
Further, the stator core 1001 is a fan-shaped columnar structure, a flange 1003 is arranged on the periphery of the stator core 1001, and the flange 1003 is screwed on the support frame 2. The flange 1003 does not affect the functional structure of the stator core 1001, and can be used for connection and fixation. The gap between the stator assembly and the rotor assembly can be conveniently adjusted by adjusting the connecting bolts, and the good output state and efficiency of the permanent magnet synchronous motor are kept.
Further, the permanent magnets 1102 are uniformly distributed on the outer side wall of the rotor 1101, and the stator cores 1001 are arranged in one-to-one correspondence with the permanent magnets 1102.
Further, a rotor connecting plate 12 is further screwed on the end face of the rotor 1101 close to one side of the support frame 2, the rotor connecting plate 12 is sleeved on the shaft shoulder of the spindle 8, and the rotor connecting plate can improve the stability of rotation of the rotor 1101.
Further, the couplings 9 are symmetrically arranged on two sides of the torque sensor 5.
Further, the main shaft 8 is a stepped shaft, and a stepped hole axially matched with the step is formed on the inner circumferential surface of the rotor 1101.
Example two:
the present embodiment differs from the first embodiment in that a stator assembly of another configuration is provided.
Specifically, as shown in fig. 3, the stator assembly is composed of eight fan-shaped stator units 10 with a central symmetry, the eight stator units 10 are not in direct contact end to end, each stator unit is provided with a stator core 1001 and a flange 1003 which are integrally formed, and a stator winding 1002 is wound on the inner side wall of each stator core 1001.
The flange edges 1003 are arc-shaped and are directly connected and installed on the supporting frame through bolts.
Example three:
the present embodiment is different from the first embodiment in that another arrangement of the detecting device is provided.
As shown in fig. 4, the machine base plate 1 is vertically arranged, and the supporting frame 2, the support 3 and the base 4 are all perpendicular to the machine base plate 1 and horizontally arranged, so that the main shaft 8 and the permanent magnet synchronous motor are both vertically arranged to detect a load device with a working state in a vertical direction.
The permanent magnet synchronous motor comprises a rotor assembly 11 and a stator assembly which are oppositely arranged, wherein the rotor assembly 11 comprises a rotor 1101 sleeved on the main shaft 8 and permanent magnets 1102 uniformly arranged on the rotor 1101 around the main shaft 8, the rotor assembly 11 is movably connected above the support frame 2 through a bearing I20, and the rotor 1101 is fixedly connected with the main shaft 8 through a flat key; the stator assembly is formed by combining a plurality of stator units 10 in a sector structure, and each stator unit 10 comprises a stator core and a stator winding wound on the stator core; the stator units 10 are all arranged above the support frame 2; the permanent magnet synchronous motor is further provided with an encoder 14 and an encoder bracket 19, and the encoder 14 is installed on the encoder bracket 19.
A side bracket 23 is arranged on the outer side of each stator unit 10, the side bracket 23 is fixed above the support frame 2 in a threaded manner, a plurality of adjusting bolts 24 are arranged on the side bracket 23, and the adjusting bolts 24 horizontally penetrate through the side bracket 23 and abut against the outer side of the stator unit; when any one of the stator units 10 needs to adjust the gap between the stator unit and the rotor assembly, the motor gap can be adjusted only by twisting the adjusting bolt 24, which is very convenient; to ensure that the efficiency and power of the permanent magnet synchronous machine are at an optimum.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A frameless permanent magnet synchronous motor testing device is characterized by comprising a machine base plate, wherein a supporting frame, a support and a base are sequentially arranged on the machine base plate in parallel; the base is provided with load equipment, and the load equipment is connected with an input shaft; a permanent magnet synchronous motor is arranged on the support frame, and a main shaft is connected to the permanent magnet synchronous motor; a torque sensor is arranged on the support, and two ends of the torque sensor are respectively connected with the input shaft and the main shaft through a coupler; the permanent magnet synchronous motor comprises a rotor assembly and a stator assembly which are oppositely arranged, wherein the rotor assembly comprises a rotor sleeved on the main shaft and permanent magnets which are uniformly distributed on the rotor around the main shaft; the stator assembly is formed by combining a plurality of stator units in a sector structure, and each stator unit comprises a stator core and a stator winding wound on the stator core; the stator units are all installed on the side wall or the upper portion of the supporting frame.
2. The frameless PMSM testing device of claim 1, wherein the support frame has an integrally formed connection base plate and a vertical mounting frame; vertical mounting bracket is close to install one side of torque sensor the middle part of stator unit, opposite side is equipped with the cylinder, the tip of main shaft passes through bearing and nut movable mounting and is in the cylinder, the tip of cylinder is equipped with the gland, the encoder is installed outward to the gland, the encoder is connected PMSM.
3. The frameless PMSM testing device of claim 2, wherein an inclined rib plate is arranged between each of two sides of the vertical mounting frame and the connecting bottom plate, and the connecting bottom plate is screwed on the machine seat plate.
4. The frameless PMSM testing device of claim 1, wherein the rotor assembly is coaxial with the spindle, the coupling and the input shaft.
5. The frameless PMSM testing device of claim 1, wherein the stator core is of a fan-shaped cylindrical structure, a flange edge is arranged on the periphery of the stator core, and the flange edge is in threaded connection with the support frame.
6. The frameless PMSM testing device of claim 1, wherein the permanent magnets are uniformly distributed on the outer side wall and/or the end face of the rotor, and the stator cores are arranged in one-to-one correspondence with the permanent magnets.
7. The frameless PMSM testing device of claim 1, wherein a rotor connecting plate is further screwed on an end face of the rotor, and the rotor connecting plate is sleeved at a shaft shoulder of the main shaft.
8. The frameless PMSM testing device of claim 1, wherein the couplings are symmetrically disposed on both sides of the torque sensor.
9. The frameless PMSM testing device of claim 1, wherein the main shaft is a stepped shaft, and a stepped hole axially matched with the step is formed on the inner circumferential surface of the rotor.
10. The frameless PMSM testing device of claim 1, wherein the bedplate is vertically arranged, and the support frame, the support base and the base are all horizontally arranged perpendicular to the bedplate; the main shaft and the permanent magnet synchronous motor are both vertically arranged; the main shaft is provided with a key groove, and the rotor is connected with the main shaft through a flat key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921999756.6U CN211121342U (en) | 2019-11-19 | 2019-11-19 | Frameless permanent magnet synchronous motor testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921999756.6U CN211121342U (en) | 2019-11-19 | 2019-11-19 | Frameless permanent magnet synchronous motor testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211121342U true CN211121342U (en) | 2020-07-28 |
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ID=71700411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921999756.6U Active CN211121342U (en) | 2019-11-19 | 2019-11-19 | Frameless permanent magnet synchronous motor testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211121342U (en) |
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2019
- 2019-11-19 CN CN201921999756.6U patent/CN211121342U/en active Active
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