Motor rotor interference magnitude testing device
By designing a motor rotor interference testing device, and using side limiting and axial limiting units to fix the motor rotor, the problem of rotor core rotation affecting the accuracy of testing is solved, and efficient testing without additional adapters is achieved.
Patent Information
- Application Number
- CN202423120868.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-12-17
AI Technical Summary
In the existing technology, during the interference fit detection of motor rotor, the rotor core cannot be effectively locked, which causes the rotation to affect the accuracy of the test results, and additional adapters are required for adaptation.
A motor rotor interference fit testing device was designed, comprising a base, a side limiting unit and an axial limiting unit. The motor rotor under test is fixed by components such as a front clamping plate, a rear clamping plate, a tail bearing sleeve plate, a bearing sleeve and a torque adapter to prevent the rotor core from rotating. Different models of rotors are adapted by positioning slots and fixing slots.
It achieves the fixation of the rotor core during the testing process, ensuring the accuracy of the test results, and eliminates the need for additional adapters, thus improving testing efficiency and adaptability.
Smart Images
Figure CN223770347U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of motor parameter detection technology, and in particular relates to a motor rotor interference testing device. Background Technology
[0002] An electric motor, commonly known as a "motor," is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. It is divided into electric motors and generators, and mainly consists of a stator, rotor, brushes, and housing. An interference fit test is required on the assembled motor rotor to determine the interference fit between the rotor core and the shaft, thus judging whether it meets design requirements. During the interference fit test, the rotor core needs to be locked to prevent rotation, and the rotor shaft dimensions are incompatible with conventional torque testing equipment, requiring an additional adapter. Therefore, a solution is needed to address these issues.
[0003] It should be noted that the above content falls within the inventor's technical knowledge and does not necessarily constitute prior art. Utility Model Content
[0004] To address the aforementioned problems, the purpose of this invention is to provide a motor rotor interference testing device that can be directly assembled with an interference testing device and can prevent the rotor core of the motor under test from rotating during the testing process.
[0005] To achieve the above objectives, this utility model proposes a motor rotor interference fit testing device, including a base and a motor rotor to be tested. The motor rotor to be tested is fixed to the upper end face of the base. The upper end face of the base is also provided with a side limiting unit and an axial limiting unit. The side limiting unit includes two sets, respectively located on both sides of the motor rotor to be tested. The axial limiting unit includes a front clamping plate, a rear clamping plate, a tail bearing sleeve plate, a bearing sleeve, a fixed shaft sleeve, and a torque adapter. The front clamping plate and the rear clamping plate are respectively clamped into the head and tail of the motor rotor to be tested. The tail bearing sleeve plate is located on the side of the rear clamping plate away from the motor rotor to be tested. The bearing sleeve, the fixed shaft sleeve, and the torque adapter are sequentially inserted into the output shaft of the head of the motor rotor to be tested, and the torque adapter is located on the side of the fixed shaft sleeve away from the motor rotor to be tested.
[0006] In one example, limiting iron blocks are inserted at the front and rear ends of the rotor core of the motor under test.
[0007] In one example, the base has several positioning slots arranged in the axial direction of the rotor of the motor under test. The positioning slots are spaced apart along the width of the base. The side limiting unit, the rear clamping plate and the tail bearing sleeve are all fixed to the base by positioning bolts passing through the positioning slots.
[0008] In one example, the side limiting unit has a fixing groove that is positioned along the axial direction of the rotor of the motor under test.
[0009] In one example, both the front and rear clamping plates have gaps that are adapted to fit the iron blocks of the motor rotor under test.
[0010] In one example, the center of the torque adapter is rectangular.
[0011] In one example, a first locking bolt is provided on the end face of the bearing sleeve away from the rotor of the motor under test along the circumference of the bearing sleeve, and the bearing sleeve is fixed to the front plate by the first locking bolt.
[0012] In one example, the front plate is secured to the base by bolts passing through the bottom.
[0013] In one example, a second locking bolt is provided on the end face of the torque adapter away from the fixed bushing along the circumference of the torque adapter, and the torque adapter is fixed to the fixed bushing by the second locking bolt.
[0014] The motor rotor interference testing device proposed in this utility model can bring the following beneficial effects:
[0015] 1. By using the side limiting unit and the axial limiting unit to lock the rotor of the motor under test, and using the torque adapter, the rotor of the motor under test can be adapted to the torque interference test device for interference testing.
[0016] 2. By setting an iron block at the rotor core of the motor under test, and with the corresponding gaps opened on the front and rear clamping plates, the rotor core of the motor under test cannot rotate during the test, thus not affecting the accuracy of the test results.
[0017] 3. The side limiting unit and the axial limiting unit can be freely adjusted according to the size of the motor under test through the positioning groove and the fixing groove, so that the device can meet the requirements of rotors of different models and different stack thicknesses.
[0018] 4. The torque converter with a rectangular center allows the rotor of the motor under test to be directly connected to the interference fit testing device without the need for an additional converter, thus improving testing efficiency. Attached Figure Description
[0019] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0020] Figure 1This is a three-dimensional structural diagram of a motor rotor interference testing device according to the present invention.
[0021] Figure 2 This is an exploded view of a motor rotor interference testing device according to the present invention.
[0022] Figure 3 This is a cross-sectional view of a motor rotor interference testing device according to the present invention.
[0023] Figure 4 This is a top view of a motor rotor interference testing device according to the present invention.
[0024] Figure 5 This is a side view of a motor rotor interference testing device according to the present invention.
[0025] Figure 6 This is a rear view of a motor rotor interference testing device according to the present invention.
[0026] Figure 7 This is a front view of a motor rotor interference testing device according to the present invention. Detailed Implementation
[0027] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.
[0028] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0031] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "a solution," "some solutions," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that solution or example is included in at least one solution or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same solution or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more solutions or examples.
[0032] like Figures 1 to 7 As shown, an embodiment of this utility model proposes a motor rotor interference fit testing device, including a base 1 and a motor rotor 2 to be tested. The motor rotor 2 to be tested is fixed to the upper end face of the base 1. The upper end face of the base 1 is also provided with a side limiting unit 3 and an axial limiting unit 4. The side limiting unit 3 includes two sets, which are respectively located on both sides of the motor rotor 2 to be tested. The axial limiting unit 4 includes a front clamping plate 41, a rear clamping plate 42, a tail bearing sleeve plate 43, a bearing sleeve 44, a fixed shaft sleeve 45, and a torque adapter 46. The front clamping plate 41 and the rear clamping plate 42... The iron blocks 21, which are respectively embedded in the rotor cores of the motor rotor 2 under test, are fixed by inserting the iron blocks 21 embedded in the rotor cores of the motor rotor 2 under test into the corresponding gaps 47 of the front clamping plate 41 and the rear clamping plate 42. The rear bearing sleeve plate 43 is set on the side of the rear clamping plate 42 away from the motor rotor 2 under test. The bearing sleeve 44, the fixed shaft sleeve 45, and the torque adapter 46 are sequentially inserted into the output shaft of the head of the motor rotor 2 under test, and the torque adapter 46 is located on the side of the fixed shaft sleeve 45 away from the motor rotor 2 under test.
[0033] Specifically, iron blocks 21 are inserted at the front and rear ends of the rotor core of the motor rotor 2 under test to prevent the rotor core from rotating.
[0034] Specifically, the base 1 has several positioning slots 11 arranged in the axial direction of the motor rotor 2 to be tested. The positioning slots 11 are spaced apart along the width of the base 1. The side limiting unit 3, the rear clamping plate 42 and the tail bearing sleeve 44 are all fixed to the base 1 by positioning bolts 48 passing through the positioning slots 11. By adjusting the position of the positioning bolts 48 in the positioning slots 11, it is possible to adapt to motor rotors 2 of different lengths to be tested.
[0035] Specifically, a fixing groove 31 is provided in the side limiting unit 3 to be arranged along the axial direction of the rotor 2 of the motor to be tested. The front clamping plate 41, the rear clamping plate 42, and the tail bearing sleeve plate 43 are all fixedly connected to the side limiting unit 3 by means of positioning bolts 48 passing through the fixing groove 31.
[0036] Specifically, both the front plate 41 and the rear plate 42 have gaps 47 that are adapted to the iron block 21 of the motor rotor 2 to be tested.
[0037] Specifically, the center of the torque adapter 46 is rectangular, which is used to adapt to the testing device for testing the interference fit of the motor rotor.
[0038] Specifically, a first locking bolt 441 is provided on the end face of the bearing sleeve 44 away from the rotor 2 of the motor under test along the circumference of the bearing sleeve 44, and the bearing sleeve 44 is fixed on the front plate 41 by the first locking bolt 441.
[0039] Specifically, the front plate 41 is fixed to the base 1 by bolts 411 passing through the bottom.
[0040] Specifically, a second locking bolt 461 is provided on the end face of the torque adapter 46 away from the fixed bushing 45 along the circumference of the torque adapter 46, and the torque adapter 46 is fixed to the fixed bushing 45 by the second locking bolt 461.
[0041] Working principle: First, the front clamping plate is fixed to the base with bolts. Then, the rotor of the motor under test is placed on the base with its output shaft inserted into the front clamping plate, so that the iron block embedded in the front of the rotor core of the motor under test is inserted into the gap of the front clamping plate. Next, the bearing sleeve, fixed shaft sleeve, and torque adapter are sequentially fitted onto the output shaft of the motor under test rotor and fixed in place with locking bolts. Finally, the rear clamping plate and tail bearing sleeve are assembled to the tail of the motor under test rotor according to its length and fixed in the corresponding fixing slots with positioning bolts. The iron block embedded in the rotor core of the motor under test is inserted into the gap of the rear clamping plate, and the tail shaft of the motor under test is inserted into the through hole of the tail bearing sleeve plate. Finally, the two side limiting units are fixed to the base and located on both sides of the motor under test by positioning bolts. The positioning bolts are then inserted into the fixing grooves to fix the front clamping plate, the rear clamping plate, and the tail bearing sleeve plate to the two side limiting units, thereby completing the fixing of the motor under test rotor. This allows the interference fit tester to complete the assembly with the motor under test rotor through the torque adapter to test the torque interference fit.
[0042] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.
[0043] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.
Claims
1. An electric machine rotor interference amount testing device characterized by, The utility model provides a motor rotor test device, including base and the motor rotor of being measured, the motor of being measured is fixed to the upper end surface of base, the upper end surface of base still is provided with side limiting unit and axial limiting unit, side limiting unit includes two groups, is located two sides of motor rotor of being measured respectively, axial limiting unit includes front clamping plate, rear clamping plate, tail bearing cover plate, bearing cover, fixed shaft sleeve and torsion adapter, front clamping plate and rear clamping plate are clamped in the head and tail of motor rotor of being measured respectively, tail bearing cover plate is set up in the side of rear clamping plate away from motor rotor of being measured, bearing cover, fixed shaft sleeve and torsion adapter are in order to be set in the output shaft of the head of motor rotor of being measured, and torsion adapter is located the side of fixed shaft sleeve away from motor rotor of being measured.
2. A test device for testing the amount of interference of an electric motor rotor according to claim 1, characterized in that The rotor core of the motor to be measured is provided with an iron block at the front end and the rear end.
3. A test device for determining the amount of interference in a motor rotor as recited in claim 1, wherein, The base is provided with a plurality of positioning grooves arranged in the axial direction of the rotor of the motor to be measured.
4. A test device for determining the amount of interference in a motor rotor as recited in claim 1, wherein, The side limiting unit is provided with a fixing groove arranged in the axial direction of the rotor of the motor to be measured.
5. A test device for determining the amount of interference in a motor rotor as set forth in claim 2, wherein, The front clamping plate and the rear clamping plate are both provided with a gap matched with the iron block of the rotor of the motor to be measured.
6. A test device for determining the amount of interference in a motor rotor as recited in claim 1, wherein, The center of the torsion adapter is in the shape of a rectangle.
7. A test device for determining the amount of interference in a motor rotor as recited in claim 1, wherein, The side end face of the bearing cover away from the rotor of the motor to be measured is provided with a first locking bolt along the circumference of the bearing cover.
8. A test device for determining the amount of interference in a motor rotor as recited in claim 1, wherein, The front clamping plate is fixed to the base by a bolt penetrating through the bottom.
9. A test device for determining the amount of interference in a motor rotor as recited in claim 1, wherein, The side end face of the torsion adapter away from the fixed shaft sleeve is provided with a second locking bolt along the circumference of the torsion adapter. The second locking bolt fixes the torsion adapter to the fixed shaft sleeve.