CN219201665U

CN219201665U - Supporting device for motor stator modal test

Info

Publication number: CN219201665U
Application number: CN202223053520.8U
Authority: CN
Inventors: 关东英; 贺智威; 刘�东; 柳哲; 鄢秋亮
Original assignee: Candela Shenzhen New Energy Technology Co Ltd
Current assignee: Candela Shenzhen New Energy Technology Co Ltd
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2023-06-16
Anticipated expiration: 2032-11-16

Abstract

The application discloses a strutting arrangement for motor stator modal test, including at least two sets of supporting mechanism that mutually support motor stator. The supporting mechanism comprises a mounting bottom plate and at least two supporting blocks arranged side by side and arranged on the mounting bottom plate, at least one supporting block in the same group of supporting mechanisms can slide on the mounting bottom plate, and the sliding supporting block can be locked at a preset position of the mounting bottom plate through a fastener. One side of the supporting block is provided with a supporting surface, supporting spaces are formed between the supporting surfaces of the supporting blocks in different groups corresponding to the positions, and a plurality of elastic supporting elements protruding out of the supporting surfaces are arranged on the supporting surfaces at intervals. The motor stator modal test device is used for solving the technical problems that in the motor stator modal test of the prior art, a support system is difficult to support an elongated stator and the support stability is low.

Description

Supporting device for motor stator modal test

Technical Field

The application relates to the technical field of motor stator modal testing devices, in particular to a supporting device for motor stator modal testing.

Background

In modal testing, to simulate the free boundary of a motor stator, a very low stiffness spring rope is typically used to hang through the stator to simulate the free boundary of the stator. For the free boundary, the highest rigid body frequency of the actual support is required to be smaller than the lowest elastic frequency of the structure, so that the influence of the suspension system on the structural mode can be reduced, and the approximate free boundary condition can be simulated. The free boundary condition is simulated, requiring that the rigid body frequency be 1/10-1/5 times the 1 st order elastomer frequency. If this requirement is not met, it is considered to replace the less rigid support system.

Existing suspension support systems may meet the requirements for small stators, but existing support systems for large elongated stators may not have the rigidity requirements. The large-sized slender stator is large in mass, and even if a spring rope with high elasticity is adopted, the rigidity of the spring rope is increased sharply due to the fact that the elongation of the spring rope is changed too much, so that the rigidity cannot be ignored in a test system, and the test precision is affected. Furthermore, existing support systems are suspended structures, and when suspending the stator and arranging the test equipment, the stator may slosh or rotate, which may affect the performance of the test and damage the test equipment.

Aiming at the problems existing in the existing supporting system, a novel supporting system structure is provided, which has the characteristics of low rigidity, large supportable quality, high supporting stability and simple and convenient testing operation.

Disclosure of Invention

Thus, the present application addresses: in the motor stator mode test in the prior art, the technical problems that a support system is difficult to support an elongated stator and the support stability is low are solved, so that the support device for the motor stator mode test is provided.

In order to solve the technical problems, the technical scheme of the application is as follows: a support device for motor stator modal test comprises at least two groups of support mechanisms which are mutually matched to support a motor stator;

the support mechanism comprises a mounting bottom plate and at least two support blocks arranged side by side and arranged on the mounting bottom plate, at least one support block in the same group of support mechanisms can slide on the mounting bottom plate, and the slidable support blocks can be locked at preset positions of the mounting bottom plate through fasteners;

one side of the supporting block is provided with a supporting surface, supporting spaces are formed between supporting surfaces of the supporting blocks in different groups corresponding to the positions of the supporting surfaces, and a plurality of elastic supporting elements protruding out of the supporting surfaces are arranged on the supporting surfaces at intervals.

Preferably, the supporting surfaces are obliquely arranged, and V-shaped supporting spaces are formed between the supporting surfaces of the supporting blocks in different groups corresponding to the positions

Preferably, the installation bottom plate is provided with a sliding groove which is horizontally arranged, and the bottom of the supporting block is connected to the sliding groove in a sliding manner.

Preferably, the sliding groove is a dovetail groove, and a dovetail block matched with the dovetail groove in shape is arranged at the bottom of the supporting block.

Preferably, the slide grooves on the mounting base plates of different groups are parallel to each other.

Preferably, a base is arranged below the mounting bottom plate, a connecting hole is formed in the mounting bottom plate, and the fixing piece penetrates through the connecting hole to fix the mounting bottom plate on the base.

Preferably, the bottom of supporting shoe is equipped with the connecting block, be equipped with on the mounting plate with the connecting block position corresponds the mounting groove that sets up, the fastener can pass the connecting block with the mounting groove is in order to fasten the two connection.

Preferably, the fastener is detachably connected to the connection block and the mounting groove.

Preferably, the length extension direction of the mounting groove is parallel to the length extension direction of the sliding groove.

Preferably, the width of the notch of the mounting groove is smaller than the width of the groove bottom;

the fastener comprises a bolt vertically penetrating through the connecting block and a nut in threaded connection with the bolt, one end of the bolt is in sliding connection with the mounting groove, and the nut is arranged above the connecting block ZHA 202201176.

The technical scheme of the application has the following advantages: compared with the mode of hanging and supporting the stator by the spring rope, the motor stator is supported at the lower parts of the two ends of the motor stator by at least two groups of supporting mechanisms, so that the motor stator is suitable for a stator with larger mass and slimness; the supporting spaces formed by the supporting blocks in different groups with corresponding positions can clamp and support the stator, so that the stability of the support is improved; the supporting blocks can slide on the mounting bottom plate, the supporting blocks are locked at the preset positions of the mounting bottom plate through the fasteners, and the distance between the supporting blocks can be adjusted, so that the device is suitable for supporting stators with different lengths, the application range of the device is improved, and meanwhile, the supporting rigidity of a plurality of elastic supporting elements is small, and the requirements of motor stator free boundary conditions in motor stator modal tests are met.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of the overall structure of a supporting device for motor stator modal testing in an embodiment of the present application;

fig. 2 is a schematic diagram of an operating state of a supporting device for motor stator modal testing in an embodiment of the present application;

FIG. 3 is a schematic view of a fastener in an embodiment of the present application;

fig. 4 is a schematic structural view of a mounting base plate in an embodiment of the present application.

Reference numerals illustrate: 1. a base; 2. a connection hole; 3. a mounting base plate; 4. a chute; 5. dovetail blocks; 6. a support block; 7. a mounting groove; 8. a connecting block; 9. a nut; 10. a bolt; 11. an elastic support element; 12. a support surface; 13. and a stator.

Detailed Description

The following description of the embodiments of the present application will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. Based on the examples herein, all other real ZHA202201176 that a person of ordinary skill in the art could obtain without inventive effort

Examples are all within the scope of the present application.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Example 1

The supporting device for the motor stator modal test provided in this embodiment includes at least two sets of parallel supporting mechanisms (multiple sets of supporting mechanisms may also be provided, and for convenience of description, two sets of supporting mechanisms are selected in this embodiment) that are mutually matched to support the stator 13.

As shown in fig. 1, each group of support mechanisms includes a square mounting base plate 3 and at least two support blocks 6 arranged side by side, and the number of each group of support blocks 6 is selected to be two in this embodiment for convenience of description. The mounting base plates 3 of the two groups of supporting mechanisms are horizontally arranged in a corresponding mode, sliding grooves 4 are horizontally arranged on the upper surface of each mounting base plate 3, and the two sliding grooves 4 on the two mounting base plates 3 are parallel to each other. The bottom of the supporting block 6 is slidably connected to the chute 4, i.e. the supporting block 6 can slide horizontally in the chute 4. Wherein two supporting blocks 6 of one group of supporting mechanisms are aligned with two supporting blocks 6 of the other group of supporting mechanisms respectively, one side of each aligned two supporting blocks 6 facing to the different groups of supporting blocks 6 is provided with a supporting surface 12 which is obliquely arranged, the supporting surface 12 is inclined towards the middle of the two supporting blocks 6, and the supporting surfaces 12 of the two supporting blocks 6 form a supporting space. The supporting space can play a role in supporting and clamping the stator 13, and the shape of the supporting space can be U-shaped, V-shaped or any other shape which can play a role in supporting and clamping the stator 13, and in the embodiment, the shape of the supporting space is set as V-shaped. A plurality of elastic supporting elements 11 protruding from the supporting surface 12 are arranged on the supporting surface 12 at intervals.

The supporting device for the motor stator modal test provided by the embodiment works as follows: the mounting bottom plate 3 is horizontally fixed, the supporting blocks 6 are fixed after sliding to corresponding positions, at the moment, the four supporting blocks 6 are aligned back and forth in pairs, the two aligned supporting blocks 6 form a V-shaped supporting space, the four supporting blocks 6 together form a three-dimensional V-shaped supporting space, at the moment, the stator 13 is horizontally placed on the supporting space left and right, and the ZHA202201176 is formed

The stator 13 is supported.

It should be noted that, compared with the conventional manner of fixing the stator 13 by suspending and supporting, the present application supports the lower parts of the two ends of the stator 13 by two sets of supporting mechanisms, so as to be applicable to the stator 13 with larger mass and slender shape; the V-shaped supporting space can form clamping and supporting for the stator 13, so that the stability of supporting is improved; the two supporting blocks 6 are arranged on the mounting bottom plate 3 in a sliding manner, and the distance between the supporting blocks 6 can be adjusted, so that the device is suitable for supporting stators 13 with different lengths, and the application range of the device is improved.

In some implementations of the present embodiment, the plurality of elastic support elements 11 are uniformly spaced along the length of the support surface 12. This arrangement facilitates stress analysis of each of the elastic support elements 11, contributing to improved experimental accuracy. The elastic supporting element 11 has small supporting rigidity, is close to a free state, and the elastic supporting element 11 is selected to support the stator 13, so that the success rate of experiments is improved.

Specifically, the chute 4 is defined as a dovetail groove, and the bottom of the supporting block 6 is provided with a dovetail block 5 matched with the shape of the dovetail groove. The sliding connection between the dovetail groove and the dovetail block 5 is smoother, and the dovetail block 5 is not easy to separate from the dovetail groove.

In some implementations of this embodiment, a base 1 is disposed below two mounting base plates 3, the shape of the base 1 is square, the mounting base plates 3 are provided with connecting holes 2, the base 1 is provided with mounting through holes (not shown), each connecting hole 2 corresponds to a plurality of mounting through holes arranged side by side, and a fixing member passes through the connecting holes 2 and the mounting through holes to fix the mounting base plates 3 on the base 1. The fasteners may be screws or other fasteners. The connecting hole 2 may be selected to be a countersunk hole so that the fixing member is prevented from being higher than the upper surface of the mounting base plate 3 to affect the sliding of the supporting block 6. The connecting holes 2 of the mounting bottom plates 3 correspond to the mounting through holes at different positions on the base 1, and then the mounting holes are fixed by adopting the fixing piece, so that the distance between the two mounting bottom plates 3 can be adjusted, and the width between the two opposite supporting blocks 6 can be adjusted, thereby being applicable to stators 13 with different widths, and further improving the application range of the device.

Example 2

In addition to the above embodiment 1, as shown in fig. 1 and 3, a connecting block 8 is provided at the bottom end of the side surface of the supporting block 6 away from the supporting surface 12, a mounting groove 7 is provided on the mounting base plate 3 corresponding to the position of the connecting block 8, and the length extending direction of the mounting groove 7 is parallel to the length extending direction of the sliding groove 4. A fastener is connected to the mounting groove 7 through the connection block 8 to fix the support block 6 to the mounting base plate 3, and the fastener is detachably connected to the connection block 8 and the mounting groove 7. The notch width of the mounting groove 7 is smaller than the groove bottom width, the fastener comprises a bolt 10 vertically penetrating through the connecting block 8 and a nut 9 in threaded connection with the bolt 10, the head end of the bolt 10 is in sliding connection with the mounting groove 7, and the nut 9 is arranged above the connecting block 8. When the supporting block 6 needs to be adjusted, the nut 9 is unscrewed, and when the supporting block 6 needs to be fixed, the nut 9 is screwed down, and the nut 9 and the bolt 10 play a role in fastening the notch of the mounting groove 7 together, so that the supporting block 6 is fixed. The fastener can be fixed in any area in the mounting groove 7, and the distance between the two groups of supporting mechanisms can be flexibly adjusted, so that the application range of the device is improved again. The supporting block 6 can be fixed through the cooperation of the fastener and the mounting groove 7, so that the supporting block 6 is prevented from moving, and the device is very convenient.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While nevertheless, obvious variations or modifications may be made to the embodiments described herein without departing from the scope of the utility model.

Claims

1. The supporting device for the motor stator modal test is characterized by comprising at least two groups of supporting mechanisms which are matched with each other to support the motor stator;

the supporting mechanism comprises a mounting bottom plate (3) and at least two supporting blocks (6) which are arranged side by side and are arranged on the mounting bottom plate (3), at least one supporting block (6) in the same group of supporting mechanisms can slide on the mounting bottom plate (3), and the sliding supporting blocks (6) can be locked at preset positions of the mounting bottom plate (3) through fasteners;

one side of the supporting block (6) is provided with a supporting surface (12), supporting spaces are formed between the supporting surfaces (12) of the supporting blocks (6) in different groups corresponding to the supporting surfaces in position, and a plurality of elastic supporting elements (11) protruding out of the supporting surfaces (12) are arranged on the supporting surfaces (12) at intervals.

2. Support device for motor stator modal testing according to claim 1, characterized in that the support surfaces (12) are arranged obliquely, a V-shaped support space being formed between the support surfaces (12) of the support blocks (6) of different groups corresponding in position.

3. Support arrangement for be used for motor stator modal test according to claim 1, characterized in that, be equipped with spout (4) that the level set up on mounting plate (3), the bottom sliding connection of supporting shoe (6) is on spout (4).

4. A support device for motor stator modal testing according to claim 3, characterized in that the runner (4) is a dovetail groove, the bottom of the support block (6) being provided with a dovetail block (5) matching the dovetail groove profile.

5. A support device for motor stator modal testing according to claim 3, characterized in that the runners (4) on the mounting base plates (3) of different groups are mutually parallel.

6. A support arrangement for be used for motor stator modal test according to claim 3, characterized in that, below mounting plate (3) is equipped with base (1), be equipped with connecting hole (2) on mounting plate (3), the mounting plate (3) are fixed in on base (1) through connecting hole (2).

7. A support arrangement for be used for motor stator modal test according to claim 3, characterized in that the bottom of supporting shoe (6) is equipped with connecting block (8), be equipped with on mounting plate (3) with connecting block (8) position corresponds mounting groove (7) that set up, the fastener can pass connecting block (8) with mounting groove (7) in order to fasten both.

8. Support device for motor stator modal testing according to claim 7, characterized in that the fastener is detachably connected to the connection block (8) and the mounting groove (7).

9. Support device for motor stator modal testing according to claim 7, characterized in that the length extension direction of the mounting groove (7) and the length extension direction of the chute (4) are parallel.

10. Support device for motor stator modal testing according to claim 9, characterized in that the slot width of the mounting slot (7) is smaller than the slot bottom width;

the fastener comprises a bolt (10) vertically penetrating through the connecting block (8) and a nut (9) in threaded connection with the bolt (10), one end of the bolt (10) is in sliding connection with the mounting groove (7), and the nut (9) is arranged above the connecting block (8).