Transition device for motor test and motor test system

Abstract

The utility model provides a transition device for motor testing and a motor testing system, the transition device comprises a first mounting plate, a rotating assembly is arranged in the first mounting plate, and a rotor of a motor is rotatably connected with the first mounting plate through the rotating assembly; the second mounting plate is used for mounting a stator of the motor, and the second mounting plate is detachably connected with the first mounting plate; and the guide structure is used for guiding and limiting the second mounting plate when the second mounting plate is connected with the first mounting plate. According to the utility model, the second mounting plate and the first mounting plate are assembled after being mounted respectively, and the guide structure is arranged in the assembling process, so that the second mounting plate can be guided, and the second mounting plate cannot move relative to the first mounting plate, and therefore, the stator cannot move towards the rotor; and the adsorption effect of the magnetic force of the magnet in the rotor on the stator is overcome, the stator and the rotor cannot collide with each other, and the assembly is simple.

Description

Technical Field

[0001] This utility model belongs to the field of motor testing technology, and in particular relates to a transition device and motor testing system for motor testing. Background Technology

[0002] In the existing technology, the testing of split motors requires the rotor and stator to be installed separately on the test frame. Since the rotor has a magnet installed inside, the gap between the rotor and the stator is relatively small. If the rotor and stator are installed on the same device, when the stator is installed after the rotor is installed, the stator may be attracted to the rotor by the magnetic force of the rotor, which will lead to product collision and stator assembly difficulties. Utility Model Content

[0003] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a transition device and a motor testing system for motor testing, so as to solve the problem of difficult stator and rotor assembly in the prior art.

[0004] To achieve the above and other related objectives, in one aspect, this utility model provides a transition device for motor testing, comprising:

[0005] A first mounting plate, wherein a rotating assembly for cooperating with a rotor is rotatably disposed within the first mounting plate, and the rotor of the motor is rotatably connected to the first mounting plate through the rotating assembly;

[0006] The second mounting plate is used to mount the stator of the motor, and the second mounting plate is detachably connected to the first mounting plate;

[0007] A guide structure is provided on the first mounting plate and the second mounting plate respectively. The guide structure is used to guide and limit the second mounting plate when the second mounting plate is connected to the first mounting plate.

[0008] Furthermore, the guide structure includes a guide rod and a guide hole that cooperate with each other. The guide rod is disposed on the first mounting plate and the guide hole is disposed on the second mounting plate, or the guide rod is disposed on the second mounting plate and the guide hole is disposed on the first mounting plate.

[0009] Furthermore, a linear bearing is installed inside the guide hole.

[0010] Furthermore, the guide rod is provided with an anti-rotation surface for docking with the installation tool to transmit torque.

[0011] Furthermore, the rotating assembly includes a rotating shaft, a bushing, and a rolling bearing. The first mounting plate is provided with a mounting hole penetrating the first mounting plate. The bushing is installed in the mounting hole, the rotating shaft is disposed in the bushing, and the rolling bearing is disposed between the bushing and the rotating shaft.

[0012] Furthermore, a first sealing groove is provided on the outer wall of the bushing that contacts the mounting hole, and a first sealing ring is provided in the first sealing groove; an oil seal is provided between the side of the rotating shaft away from the first mounting plate and the bushing.

[0013] Furthermore, a pressure plate is provided on the side of the rotating shaft away from the second mounting plate, and the pressure plate is connected to the bushing; a retaining spring is sleeved on the side of the rotating shaft away from the second mounting plate, and the retaining spring is used to prevent the rotating shaft from moving axially.

[0014] Furthermore, a second sealing groove is provided on the side of the first mounting plate near the second mounting plate, and a second sealing ring is installed in the second sealing groove to seal the gap between the first mounting plate and the second mounting plate.

[0015] Furthermore, the first mounting plate has a first positioning stop on the side away from the second mounting plate, and a second positioning stop on the side of the first mounting plate closer to the second mounting plate; the second mounting plate is provided with a positioning pin for positioning the stator of the motor.

[0016] On the other hand, this utility model also provides a motor testing system, including the aforementioned transition device for motor testing and a test frame, wherein the first mounting plate is provided with a plurality of first connection holes for connecting with the test frame, and the first mounting plate is connected to the test frame.

[0017] As described above, this utility model has the following beneficial effects: By mounting the rotor on the first mounting plate and the stator on the second mounting plate, the first and second mounting plates are separate before installation. During use, the second and first mounting plates are assembled. During the assembly process, due to the guide structure, the second mounting plate is not only guided but also prevented from moving relative to the first mounting plate. Therefore, when installing the stator and rotor for motor testing, the stator will not move towards the rotor, overcoming the magnetic attraction of the rotor's internal magnets on the stator. There will be no collision between the stator and rotor, and the assembly is simple. Attached Figure Description

[0018] Figure 1 A schematic diagram of the structure of the transition device for motor testing provided by this utility model;

[0019] Figure 2 for Figure 1 Top view;

[0020] Figure 3 for Figure 2 Sectional view of AA;

[0021] Figure 4 for Figure 2 Sectional view of BB;

[0022] Figure 5 This is a sectional view of the bushing;

[0023] Figure 6 This is a schematic diagram of the structure of the first mounting plate;

[0024] Figure 7 This is a schematic diagram of the second mounting plate.

[0025] Figure 8 This is a schematic diagram of the structure for mounting the motor onto the transition device.

[0026] Label Explanation

[0027] 1-First mounting plate, 11-Second sealing ring, 12-First positioning stop, 13-Second positioning stop, 14-First connecting hole, 2-Second mounting plate, 21-Positioning pin, 22-Allowing groove, 3-Rotating assembly, 31-Rotating shaft, 32-Bearing sleeve, 321-First boss, 322-Second boss, 323-Third boss, 33-Rolling bearing, 34-First sealing ring, 35-Oil seal, 36-Pressure plate, 37-Snap ring, 4-Guide structure, 41-Guide rod, 411-Anti-rotation surface, 42-Guide hole, 43-Linear bearing, 5-Stator. Detailed Implementation

[0028] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0029] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of this utility model, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this utility model.

[0030] In order to describe the present invention in detail, the following will provide a specific description of a transition device and a motor testing system for motor testing provided by the present invention.

[0031] like Figures 1 to 8 As shown, this utility model provides a transition device for motor testing, including a first mounting plate 1, a second mounting plate 2 and a guide structure 4. A rotating component 3 is rotatably mounted inside the first mounting plate 1. The first mounting plate 1 is used to connect the rotor of the motor. The rotor cooperates with the rotating component 3 and rotates relative to the first mounting plate 1.

[0032] The stator of the motor is mounted on the side of the second mounting plate 2 away from the first mounting plate 1. The first mounting plate 1 and the second mounting plate 2 are detachably connected by bolts. When the stator and rotor are installed, the first mounting plate 1 and the second mounting plate 2 are separate. During testing, the second mounting plate 2 and the first mounting plate 1 are fixed together by bolts.

[0033] In some implementations, the first mounting plate 1 and the second mounting plate 2 are circular, and the rotor, the first mounting plate 1, and the rotating assembly 3 are coaxially arranged. The second mounting plate 2 has a through hole through which the rotating assembly 3 passes. After the second mounting plate 2 and the first mounting plate 1 are installed, there is a certain gap between the rotor and the second mounting plate 2, so that the rotor does not contact the second mounting plate 2 when rotating.

[0034] After the rotor and rotating assembly 3 are installed, and the stator and second mounting plate 2 are installed, when the first mounting plate 1 and the second mounting plate 2 are assembled, the guide structure 4 guides and limits the second mounting plate 2. The guide structure 4 not only provides guidance for the second mounting plate 2, but also prevents the second mounting plate 2 from rotating circumferentially relative to the first mounting plate 1, preventing the second mounting plate 2 from rotating and changing position when it is close to the first mounting plate 1. The positions of the rotor and stator are fixed, the stator will not move toward the rotor, and a certain distance is always maintained between the rotor and the stator to prevent collision.

[0035] The guide structure 4 can have various structural forms. For example, a linear guide rail can be installed on the first mounting plate 1, and a slider or groove can be installed on the second mounting plate 2, achieving guidance through sliding engagement. Alternatively, a boss can be provided on the first mounting plate 1, and a groove can be provided on the second mounting plate 2, achieving guidance through the engagement of the boss and the groove.

[0036] like Figure 4 As shown, in some embodiments, the guide structure 4 includes a guide rod 41 and a guide hole 42. The guide rod 41 is disposed on the first mounting plate 1, and the guide hole 42 is disposed on the second mounting plate 2. Alternatively, the guide rod 41 can be disposed on the second mounting plate 2, and the guide hole 42 can be disposed on the first mounting plate 1. The second mounting plate 2 and the first mounting plate 1 are connected by the guide rod 41 and the guide hole 42, ensuring that the second mounting plate 2 will not shift under the action of magnetic force.

[0037] To prevent the second mounting plate 2 from shifting around the guide rod 41 under the action of magnetic force, at least two guide rods 41 can be arranged at intervals. In some embodiments, four guide rods 41 are arranged, which can further prevent the second mounting plate 2 from shifting.

[0038] In some embodiments, to reduce friction during the assembly of the second mounting plate 2 and the first mounting plate 1, a linear bearing 43 is installed in the guide hole 42. When the first mounting plate 1 and the second mounting plate 2 are engaged, the guide rod 41 passes through the linear bearing 43. The linear bearing 43 converts the sliding friction between the guide rod 41 and the guide hole 42 into rolling friction, reducing the resistance during the axial movement of the second mounting plate 2. The inner diameter of the linear bearing 43 matches the diameter of the guide rod 41, reducing radial wobble, preventing the guide rod 41 from misaligning, and ensuring the accurate alignment of the two mounting plates. If the guide hole 42 directly contacts the guide rod 41, long-term sliding friction can easily lead to wear of the guide rod 41. Using the linear bearing 43 can distribute the load and protect the guide rod 41 and the guide hole 42.

[0039] To facilitate the replacement of the guide rod 41, a threaded hole is provided in the first mounting plate 1, and one end of the guide rod 41 is provided with an external thread, which is threadedly connected to the threaded hole. Multiple threaded holes are provided on the first mounting plate 1, and the position of the guide rod 41 can be changed according to different motor models, so that the same set of transition devices can be used to fix the rotor and stator of various motor models.

[0040] The guide rod 41 requires tightening with a certain force during installation. To reduce friction, the guide rod 41 has a smooth cylindrical surface. When connecting the guide rod 41 to the threaded hole, a tool such as a wrench is typically used to rotate the guide rod 41. To prevent slippage when rotating the guide rod 41, an anti-rotation surface 411 is provided on the guide rod 41. The tool is engaged with the anti-rotation surface 411 and then rotated, allowing for relatively quick installation of the guide rod 41 into the threaded hole. Each guide rod 41 can have two anti-rotation surfaces 411, arranged opposite each other.

[0041] Specifically, the front end of the guide rod 41 is tapered, and a tapered transition section is machined at the end of the guide rod 41 away from the first mounting plate 1. The diameter of the initial end of the tapered section is slightly smaller than the inner diameter of the linear bearing 43, and gradually transitions axially to the standard diameter of the guide rod 41. The tapered structure provides a natural guiding effect when the guide rod 41 is inserted into the guide hole 42. Even if there is a slight initial positional deviation, it can automatically adjust to a coaxial state through the inclined surface contact, avoiding jamming or damage caused by hard collision. The diameter of the tapered initial end is smaller than the inner diameter of the linear bearing 43, and only a part of the tapered surface contacts the edge of the linear bearing 43 during initial contact, significantly reducing the contact area and frictional resistance, making the assembly process smoother.

[0042] In some embodiments, such as Figure 3 As shown, the rotating assembly 3 includes a rotating shaft 31, a bushing 32, and a rolling bearing 33. A mounting hole penetrating the first mounting plate 1 is provided in the first mounting plate 1, and the bushing 32 is installed in the mounting hole. The rotating shaft 31 is disposed inside the bushing 32, and the rolling bearing 33 is disposed between the bushing 32 and the rotating shaft 31.

[0043] The bushing 32 is fixed to the first mounting plate 1 by bolts, such as Figure 5 As shown, the inner wall of the bushing 32 has a first boss 321, a second boss 322, and a third boss 323 arranged from top to bottom. A rolling bearing 33 is installed between the second boss 322 and the third boss 323. The upper end face of the rolling bearing 33 is abutted by the second boss 322, and the lower end face is abutted by a bearing pressure plate 36. The bearing pressure plate 36 is bolted to the bushing 32. The bearing pressure plate 36 is located inside the bushing 32. After the bearing pressure plate 36 and the bushing 32 are installed, the bottom surface of the bearing pressure plate 36 is flush with the bottom surface of the bushing 32. The cross-section of the rotating shaft 31 is T-shaped. Multiple rolling bearings 33 can be arranged between the bushing 32 and the rotating shaft 31, either adjacent to each other or spaced apart.

[0044] A slot is provided on the outer wall of the rotating shaft 31 away from the second mounting plate 2. A retaining spring 37 is provided in the slot. The retaining spring 37 fixes the rotating shaft 31 in the axial direction. After the retaining spring 37 is inserted into the slot, it contacts the end face of the rolling bearing 33 to form a rigid stop, preventing the rotating shaft 31 from moving in the axial direction and avoiding the rotating shaft 31 from coming out.

[0045] In some embodiments, the rotating shaft 31 is a splined shaft. After the second mounting plate 2 and the first mounting plate 1 are assembled, the top of the splined shaft is higher than the second mounting plate 2. A through hole is provided in the middle of the second mounting plate 2, and the inner diameter of the through hole is slightly larger than the diameter of the stator.

[0046] like Figure 4 As shown, a second positioning stop 13 for positioning is provided on the side of the first mounting plate 1 near the second mounting plate 2, which is equivalent to providing a flange on the top of the first mounting plate 1. The second positioning stop 13 engages with the through hole of the second mounting plate 2. A first positioning stop 12 for positioning is provided on the side of the first mounting plate 1 away from the second mounting plate 2. The first positioning stop 12 engages with the test frame, thereby positioning the first mounting plate 1 on the test frame.

[0047] In some embodiments, such as Figure 7 As shown, the second mounting plate 2 is provided with a positioning pin 21. Before the stator is fixed to the second mounting plate 2 by bolts, the stator is first positioned by the positioning pin 21.

[0048] During testing, cooling oil is sprayed from the rotor onto the stator. Therefore, to prevent cooling oil overflow, a first sealing groove is provided on the outer wall of the bushing 32 that contacts the mounting hole. A first sealing ring 34 is installed in the first sealing groove to prevent cooling oil from flowing out through the gap between the bushing 32 and the first mounting plate 1. A second sealing groove is provided on the side of the first mounting plate 1 near the second mounting plate 2. A second sealing ring 11 is installed in the second sealing groove to prevent cooling oil from flowing out between the first mounting plate 1 and the second mounting plate 2.

[0049] An oil seal 35 is installed on the first boss 321 of the bushing 32. That is, an oil seal 35 is provided between the side of the rotating shaft 31 away from the first mounting plate 1 and the bushing 32. The oil seal 35 is made of fluororubber. The oil seal 35 prevents cooling oil from flowing out through the gap between the bushing 32 and the rolling bearing 33.

[0050] After the stator is installed on the second mounting plate 2, the stator and the second mounting plate 2 are sealed by the stator's sealing gasket. The cooling oil is sealed in the space enclosed by the stator, the first mounting plate 1 and the second mounting plate 2 by the first sealing ring 34, the second sealing ring 11 and the oil seal 35.

[0051] This utility model also provides a motor testing system, including the aforementioned transition device for motor testing and a test frame, as shown above. Figure 6As shown, the first mounting plate 1 has several first connecting holes 14. The first mounting plate 1 is connected to the test frame by bolts passing through the first connecting holes 14. After the first mounting plate 1 is connected to the test frame, in order to ensure good contact between the second mounting plate 2 and the first mounting plate 1, clearance holes or clearance grooves 22 are provided on the second mounting plate 2 at the locations corresponding to the first connecting holes 14, thereby allowing the bolts to pass through. Both the second mounting plate 2 and the first mounting plate 1 have second connecting holes, and bolts connect and fix the second mounting plate 2 and the first mounting plate 1 with the second connecting holes.

[0052] Installation Process: Fix the first mounting plate 1 onto the test frame. Separate the first mounting plate 1 and the second mounting plate 2. Mount the rotor onto the rotating shaft 31. Align the positioning holes of the stator 5 with the positioning pins 21 on the second mounting plate 2. Then, secure the stator 5 to the second mounting plate 2 with bolts. When assembling the second mounting plate 2 with the first mounting plate 1, pass the guide rod 41 through the linear bearing 43. The cooperation between the guide rod 41 and the linear bearing 43 prevents the second mounting plate 2 from rotating relative to the first mounting plate 1. After moving the second mounting plate 2 into place, secure it to the first mounting plate 1 with bolts. Then, start the test system. After the test is completed, remove the second mounting plate 2 from the first mounting plate 1. After removing the second mounting plate 2, remove the stator 5 and the rotor separately.

[0053] The motor testing system provided by this utility model allows for pre-assembly of the stator and rotor before testing. Oiling and draining operations can also be performed outside the test frame. After the stator and rotor are pre-assembled with the transition device, the transition device is then installed onto the test frame. During the installation and disassembly of the stator and rotor, the test frame can be assembled and tested with other transition devices. Therefore, the entire process increases the utilization rate of the test frame and improves testing efficiency. Furthermore, during pre-assembly, the stator and rotor are installed separately and then assembled. During assembly, the stator and rotor are fixed in place and will not attract each other under magnetic force, preventing collisions between them.

[0054] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A transition device for motor testing, characterized in that, include: A first mounting plate, wherein a rotating assembly for cooperating with a rotor is rotatably disposed within the first mounting plate, and the rotor of the motor is rotatably connected to the first mounting plate through the rotating assembly; The second mounting plate is used to mount the stator of the motor, and the second mounting plate is detachably connected to the first mounting plate; A guide structure is provided on the first mounting plate and the second mounting plate respectively. The guide structure is used to guide and limit the second mounting plate when the second mounting plate is connected to the first mounting plate.

2. The transition device for motor testing according to claim 1, characterized in that, The guide structure includes a guide rod and a guide hole that cooperate with each other. The guide rod is disposed on the first mounting plate and the guide hole is disposed on the second mounting plate, or the guide rod is disposed on the second mounting plate and the guide hole is disposed on the first mounting plate.

3. The transition device for motor testing according to claim 2, characterized in that, A linear bearing is installed inside the guide hole.

4. The transition device for motor testing according to claim 2, characterized in that, The guide rod is provided with an anti-rotation surface for docking with the installation tool to transmit torque.

5. The transition device for motor testing according to claim 1, characterized in that, The rotating assembly includes a rotating shaft, a bushing, and a rolling bearing. The first mounting plate is provided with a mounting hole that penetrates the first mounting plate. The bushing is installed in the mounting hole, the rotating shaft is disposed in the bushing, and the rolling bearing is disposed between the bushing and the rotating shaft.

6. The transition device for motor testing according to claim 5, characterized in that, A first sealing groove is provided on the outer wall of the bushing, and a first sealing ring is provided in the first sealing groove; an oil seal is provided between the side of the rotating shaft away from the first mounting plate and the bushing.

7. The transition device for motor testing according to claim 5, characterized in that, A pressure plate is provided on the side of the rotating shaft away from the second mounting plate, and the pressure plate is connected to the bushing; a retaining spring is sleeved on the side of the rotating shaft away from the second mounting plate, and the retaining spring is used to prevent the rotating shaft from moving axially.

8. The transition device for motor testing according to claim 1, characterized in that, The first mounting plate has a second sealing groove on the side near the second mounting plate, and a second sealing ring is installed in the second sealing groove to seal the gap between the first mounting plate and the second mounting plate.

9. The transition device for motor testing according to any one of claims 1-8, characterized in that, The first mounting plate has a first positioning stop on the side away from the second mounting plate, and a second positioning stop on the side of the first mounting plate closer to the second mounting plate; the second mounting plate has a positioning pin for positioning the stator of the motor.

10. A motor testing system, characterized in that, The device includes a transition device for motor testing as described in any one of claims 1-9 and a test frame, wherein the first mounting plate is provided with a plurality of first connection holes for connecting to the test frame, and the first mounting plate is connected to the test frame.

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