A strength testing device for a motor rotor

Abstract

The present invention discloses a strength testing device for a motor rotor, specifically relating to the technical field of motor rotor testing, including a testing platform, a pressure electric cylinder, a pressure sensor, and a synchronous and stable pressure application mechanism; the synchronous and stable pressure application mechanism includes a sleeve block, a hinge shaft, a hinge plate, a stable rotating ring, a plurality of guiding pressure frames, a sleeve column, and a motor rotor; and a corner synchronous pressure application mechanism is provided at the top end of the sleeve column; and a shaft part synchronous pressure application mechanism is provided at the bottom end of the sleeve column. Through the synchronous and stable pressure application mechanism, the present invention can apply stable pressure synchronously in different directions, thereby performing multi-point synchronous and stable testing on the motor rotor, greatly improving the efficiency of multi-point stable pressure testing, and solving the problem that it is difficult to synchronously achieve stable multi-point pressure testing, which leads to a significant decrease in the efficiency of multi-point stable pressure testing.

Description

Technical Field

[0001] The present invention relates to the technical field of motor rotor testing, and more specifically, the present invention relates to a strength testing device for a motor rotor. Background Art

[0002] This device can test the stable pressure environment during the operation of the motor, conduct strength tests on the rotor, and thus evaluate the tolerance of the rotor under actual working conditions. Secondly, potential defects are discovered: through stable pressure testing, cracks and inclusion defects that may exist inside the rotor can be detected in a timely manner, avoiding rotor rupture or failure caused by these defects during the operation of the motor.

[0003] In the existing publicly available literature, the patent with the Chinese patent publication number CN116818525A discloses a strength testing device and a strength testing method for a motor rotor. This strength testing device includes a stretching device connected to each pole part for applying a radial tensile force to each pole part; a strain sensor fixed to each pole part for obtaining strain data of each pole part. This strength testing device can shorten the duration required for testing and also reduce the personal threat to testers from flying debris. However, the following problems still exist when using this technology.

[0004] When testing a motor rotor, it is necessary to provide a stable pressure for strength testing, and the pressure is applied vertically to the motor rotor shaft. There is also a rotor core part on the motor rotor, and there are corner positions of each slot in the rotor core, and there are also various points on the rotor shaft. After testing one point, it is necessary to switch to another point and then determine the stable extrusion pressure value and the extrusion position. It is difficult to maintain stable pressure application at each position synchronously according to the specified position. Therefore, it is difficult to synchronously achieve stable pressure testing at the corner positions of the iron core on the motor rotor, and it is also difficult to synchronously achieve stable multi-point pressure testing on the shaft of the motor rotor. This leads to a significant decrease in the efficiency of multi-point stable pressure testing. For this reason, a strength testing device for a motor rotor needs to be provided. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides the following technical solution: A strength testing device for a motor rotor, including a testing platform, a pressure electric cylinder, and a pressure sensor. The pressure electric cylinder is located above the testing platform, the pressure sensor is fixedly connected to the output end of the pressure electric cylinder, and a synchronous stable pressure application mechanism is provided on one side of the pressure sensor;

[0006] The synchronous stable pressure application mechanism includes a sleeve block fixedly arranged on one side of the pressure sensor. The inner wall of the sleeve block is rotatably connected with a hinge shaft. The top end of the hinge shaft is fixedly connected with a hinge plate. One side of the hinge plate is fixedly connected with a stable rotating ring. A plurality of guiding pressure frames are fixedly connected to the outer wall of the stable rotating ring. A sleeve column is slidably connected to the inner wall of each guiding pressure frame. The motor rotor is slidably connected inside the stable rotating ring. A corner synchronous pressure application mechanism is arranged at the top end of the sleeve column. An axial part synchronous pressure application mechanism is arranged at the bottom end of the sleeve column.

[0007] Preferably, the sleeve block and the hinge plate are rotatably connected. The outer wall of the sleeve block and the inner wall of the hinge plate are both smooth surfaces. The plurality of guiding pressure frames are arranged in an equidistant circular distribution. The cross-sectional shape of the stable rotating ring is circular. One side of the pressure electric cylinder is fixedly connected with a socket block. A hinge rod is rotatably connected to the inner wall of the socket block. The hinge rod is fixedly connected with the test platform.

[0008] Preferably, a stable guiding shaft is fixedly connected to the bottom end of the hinge plate. A guiding groove is formed in the outer wall of the stable guiding shaft. The stable guiding shaft is slidably connected with the test platform to which the guiding groove belongs. A positioning ring is fixedly connected to the top end of the test platform and close to its center point. The positioning ring is inserted into the motor rotor. A plurality of mounting blocks are fixedly connected to the outer wall of the test platform. A controller is fixedly connected to the upper surface of the test platform and close to the mounting blocks.

[0009] When this technical solution is used, set the test pressure value on the controller. Then, the pressure sensor is pushed by the pressure electric cylinder. The sleeve block presses the hinge shaft. The hinge plate drives the stable guiding shaft to rotate clockwise. The hinge plate drives the stable rotating ring to rotate clockwise. The guiding pressure frame drives the sleeve column to move to the right. In this way, multiple sleeve columns all approach the center point of the motor rotor.

[0010] Preferably, the corner synchronous pressing mechanism includes a concave block fixedly arranged at the top end of the sleeve column; two limiting rings are arranged above the guiding pressing frame, and both of the two limiting rings are fixedly connected with the sleeve column. A stable guide rail is slidably connected between the two limiting rings. One side of the inner wall of the stable guide rail is fixedly connected with a stable sliding column, and one end of the stable guide rail is fixedly connected with a support plate, and the support plate is fixedly connected with the test platform; both the stable guide rail and the stable sliding column are slidably connected with the sleeve column. The top end of the inner wall of the concave block is fixedly connected with two connecting shafts, and a socket pressing strip is rotatably connected to the outer wall of each connecting shaft. An extrusion column is rotatably connected to the inner wall of the socket pressing strip at a position far from the connecting shaft; the top end of the extrusion column is fixedly connected with a hinged pressing block, and a corner pressing plate is fixedly connected to one side of the hinged pressing block. The corner pressing plate is slidably connected with the motor rotor; a connecting plate is fixedly connected to the other side of each hinged pressing block, a guiding shaft is fixedly connected to one side of the connecting plate, and two sliding rings are fixedly connected to the outer wall of the guiding shaft. The two sliding rings are slidably connected with the stable guide rail. The two limiting rings are symmetrically arranged with respect to the stable guide rail, and the cross-sectional shapes of the two limiting rings are both circular rings.

[0011] When this technical solution is in use, the sleeve column drives the two limiting rings to move to the right, and the sleeve column can move to the right along the inner wall of the stable sliding column. The connecting shaft drives one end of the socket pressing strip, the extrusion column presses the hinged pressing block, the hinged pressing block drives the connecting plate to move to the right, the guiding shaft drives the two sliding rings to move to the right, and the two sliding rings can slide along the outer wall of the stable guide rail. The corner pressing plate can apply a stable pressure value to the corner position of the iron core of the motor rotor. Multiple corner pressing plates respectively apply stable pressure to the multiple iron core corner positions of the motor rotor for strength testing.

[0012] Preferably, the shaft part synchronous pressing mechanism includes a linkage block fixedly arranged at the bottom end of the sleeve column; an extrusion strip is fixedly connected to one side of the linkage block, and an arc-shaped upper pressing block is fixedly connected to one side of the extrusion strip, and the arc-shaped upper pressing block is used for pressing the motor rotor; a linkage plate is fixedly connected to the lower surface of the extrusion strip, and an arc-shaped middle pressing block is fixedly connected to one end of the linkage plate. An arc-shaped lower pressing block is slidably connected to the outer wall of the motor rotor and below the arc-shaped middle pressing block; an extrusion plate is fixedly connected to one side of the outer wall of the arc-shaped lower pressing block, and an extrusion block is fixedly connected to one end of the extrusion plate. The extrusion block is fixedly connected with another sleeve column. Both the arc-shaped middle pressing block and the arc-shaped upper pressing block are slidably connected with the motor rotor, and the cross-sectional shapes of the arc-shaped upper pressing block and the arc-shaped middle pressing block are arc-shaped.

[0013] When this technical solution is in use, the simultaneous rightward movement of the sleeve columns will drive the linkage blocks to move rightward. The extrusion bar causes the arc-shaped upper pressing block to move rightward and squeeze. The extrusion bar synchronously drives the linkage plate to move rightward. The arc-shaped middle pressing block squeezes at the middle position of the outer wall of the shaft of the motor rotor. The other motor rotor will drive the extrusion block to approach the center point of the motor rotor, and the extrusion plate drives the arc-shaped lower pressing block to squeeze at the lower position of the outer wall of the shaft of the motor rotor.

[0014] The technical effects and advantages of the present invention:

[0015] 1. Through the synchronous and stable pressure application mechanism of the present invention, the pressure cylinder pushes the pressure sensor, the pressure sensor pushes the sleeve block, the hinge shaft drives the hinge plate to squeeze, the stable guide shaft rotates clockwise stably along the inner wall of the guide groove, the hinge plate drives the stable rotating ring to rotate clockwise, and the guide pressure frame drives the sleeve column to move rightward. In this way, multiple sleeve columns all approach the center point of the motor rotor, so that stable pressure can be applied synchronously in different directions, thereby performing multi-point synchronous testing on the motor rotor. There is no need to test each point position one by one, which greatly improves the efficiency of multi-point stable pressure testing.

[0016] 2. The present invention adopts the corner synchronous pressure application mechanism. The sleeve column drives two limit rings to move rightward. At the same time, the sleeve column guides and moves rightward along the outer wall of the stable sliding column. The sleeve column drives the concave block to move rightward. The concave block drives two connecting shafts to move rightward synchronously. The socket pressing bar drives the extrusion column to squeeze. The extrusion column squeezes the hinge pressing block. The hinge pressing block drives the connecting plate to move rightward. The guide shaft drives two sliding rings to move rightward. Multiple corner pressing plates respectively apply stable pressure to multiple iron core corner positions of the motor rotor for strength testing, which greatly improves the efficiency of multi-point stable pressure testing.

[0017] 3. Through the shaft part synchronous pressure application mechanism of the present invention, the rightward movement of the sleeve column will drive the linkage block to move rightward. The linkage block drives the extrusion bar to move rightward. The arc-shaped upper pressing block squeezes at the upper position of the outer wall of the shaft of the motor rotor. The extrusion bar synchronously drives the linkage plate to move rightward. The arc-shaped middle pressing block squeezes at the middle position of the outer wall of the shaft of the motor rotor. The other motor rotor will drive the extrusion block to approach the center point of the motor rotor, and the extrusion plate drives the arc-shaped lower pressing block to squeeze at the lower position of the outer wall of the shaft of the motor rotor, synchronously realizing stable multi-point pressure testing on the shaft part of the motor rotor, which greatly improves the efficiency of multi-point stable pressure testing.

[0018] According to the mutual influence of the above multiple functions, first, a stable pressure is synchronously applied to multiple sleeve columns, and they all start to approach the center point of the motor rotor. At the same time, multiple corner pressing plates respectively apply a stable pressure to multiple core corner positions of the motor rotor for strength testing, and at the same time, a stable multi-point pressure test is synchronously achieved on the shaft part of the motor rotor. In summary, a stable pressure test can be synchronously achieved on the core position of the motor rotor, and a stable multi-point pressure test can also be synchronously achieved on the shaft part of the motor rotor, greatly improving the efficiency of the multi-point stable pressure test. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. is a front view structural schematic diagram of the strength testing device for the motor rotor of the present invention.

[0020] Figure 2 FIG. is a truncated partial structural schematic diagram of the connection between the positioning ring and the test platform of the present invention.

[0021] Figure 3 FIG. is a front view partial structural schematic diagram of the connection between the hinge shaft and the hinge plate of the present invention.

[0022] Figure 4 FIG. is a truncated partial structural schematic diagram of the connection between the test platform and the support plate of the present invention.

[0023] Figure 5 For the present invention Figure 4 The enlarged structural schematic diagram at position A in

[0024] Figure 6 FIG. is a front view partial structural schematic diagram of the connection between the connecting shaft and the concave block of the present invention.

[0025] Figure 7 FIG. is a bottom view structural schematic diagram of the strength testing device for the motor rotor of the present invention.

[0026] Figure 8 FIG. is a partial structural schematic diagram of the connection between the linkage block and the extrusion bar of the present invention.

[0027] Figure 9 FIG. is a truncated partial structural schematic diagram of the connection between the arc-shaped pressing block and the extrusion plate of the present invention.

[0028] The reference numerals are: 1, test platform; 2, pressure electric cylinder; 3, pressure sensor; 4, sleeve block; 5, hinge shaft; 6, hinge plate; 7, stable rotating ring; 8, guiding pressure frame; 9, sleeve column; 10, motor rotor; 11, hinge rod; 12, socket block; 13, stable guiding shaft; 14, guiding groove; 15, positioning ring; 16, mounting block; 17, controller; 18, limiting ring; 19, stable guide rail; 20, stable sliding column; 21, support plate; 22, concave block; 23, connecting shaft; 24, socket pressing strip; 25, extrusion column; 26, hinge pressing block; 27, corner pressing plate; 28, connecting plate; 29, guiding shaft; 30, sliding ring; 31, linkage block; 32, extrusion strip; 33, arc upper pressing block; 34, linkage plate; 35, arc middle pressing block; 36, arc lower pressing block; 37, extrusion plate; 38, extrusion block. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] As shown in the attached Figures 1-9 figure, a strength testing device for a motor rotor is provided. A synchronous and stable pressure applying mechanism, a corner synchronous pressure applying mechanism, and a shaft part synchronous pressure applying mechanism are provided on the strength testing device for the motor rotor. The settings of each mechanism and component can synchronously and stably perform pressure testing on the iron core position of the motor rotor 10, and can also synchronously and stably perform multi-point pressure testing on the shaft part of the motor rotor 10, greatly improving the efficiency of multi-point stable pressure testing. The specific structural settings of each mechanism and component are as follows.

[0031] In this embodiment, as shown in the attached Figures 1-4As shown, the pressure cylinder 2 is located above the test platform 1. The pressure sensor 3 is fixedly connected to the output end of the pressure cylinder 2. A synchronous and stable pressure application mechanism is provided on one side of the pressure sensor 3. The synchronous and stable pressure application mechanism includes a sleeve block 4 fixedly arranged on one side of the pressure sensor 3. The inner wall of the sleeve block 4 is rotatably connected to a hinge shaft 5. The top end of the hinge shaft 5 is fixedly connected to a hinge plate 6. One side of the hinge plate 6 is fixedly connected to a stable rotating ring 7. The outer wall of the stable rotating ring 7 is fixedly connected with a plurality of guiding pressure frames 8. The inner wall of each guiding pressure frame 8 is slidably connected with a sleeve column 9. And the inner part of the stable rotating ring 7 is slidably connected with a motor rotor 10. A corner synchronous pressure application mechanism is provided at the top end of the sleeve column 9. An axial synchronous pressure application mechanism is provided at the bottom end of the sleeve column 9. The sleeve block 4 is rotatably connected with the hinge plate 6, and the outer wall of the sleeve block 4 and the inner wall of the hinge plate 6 are both smooth surfaces. The plurality of guiding pressure frames 8 are arranged in an equidistant circular distribution. The cross-sectional shape of the stable rotating ring 7 is circular ring-shaped.

[0032] In this embodiment, as shown in the appendix Figures 1-3 As shown, a socket block 12 is fixedly connected to one side of the pressure cylinder 2. A hinge rod 11 is rotatably connected to the inner wall of the socket block 12. The hinge rod 11 is fixedly connected to the test platform 1, so that the pressure cylinder 2 can drive the socket block 12 to rotate. The socket block 12 rotates on the outer wall of the hinge rod 11, making the socket block 12 rotate stably.

[0033] A stable guide shaft 13 is fixedly connected to the bottom end of the hinge plate 6. A guide groove 14 is formed on the outer wall of the stable guide shaft 13. The stable guide shaft 13 is slidably connected to the test platform 1 to which the guide groove 14 belongs, so that the hinge plate 6 can drive the stable guide shaft 13 to rotate clockwise. The stable guide shaft 13 rotates stably along the inner wall of the guide groove 14 in a clockwise direction, so that the hinge plate 6 can apply pressure stably. A positioning ring 15 is fixedly connected to the top end of the test platform 1 and close to its center point. The positioning ring 15 is inserted into the motor rotor 10, so that the positioning ring 15 can position and support the bottom end of the motor rotor 10, so that the motor rotor 10 can be stably inserted into the positioning ring 15 for positioning operation. A plurality of mounting blocks 16 are fixedly connected to the outer wall of the test platform 1. A controller 17 is fixedly connected to the upper surface of the test platform 1 and close to the mounting block 16, so that a bolt can be inserted into the mounting block 16 to fix the mounting block 16, so that the plurality of mounting blocks 16 can provide a supporting force for the test platform 1.

[0034] In this embodiment, as shown in the appendix Figures 4-6As shown in the figure, the corner synchronous pressing mechanism includes a concave block 22 fixedly arranged at the top end of the sleeve column 9; there are two limiting rings 18 above the guiding pressing frame 8, both of the two limiting rings 18 are fixedly connected to the sleeve column 9, a stable guide rail 19 is slidably connected between the two limiting rings 18, one side of the inner wall of the stable guide rail 19 is fixedly connected with a stable sliding column 20, one end of the stable guide rail 19 is fixedly connected with a support plate 21, and the support plate 21 is fixedly connected to the test platform 1; both the stable guide rail 19 and the stable sliding column 20 are slidably connected to the sleeve column 9, the top end of the inner wall of the concave block 22 is fixedly connected with two connecting shafts 23, the outer wall of each connecting shaft 23 is rotatably connected with a socket pressing strip 24, and the inner wall of the socket pressing strip 24 is rotatably connected with an extrusion column 25 at a position far from the connecting shaft 23; the top end of the extrusion column 25 is fixedly connected with a hinged pressing block 26, and a corner pressing plate 27 is fixedly connected to one side of the hinged pressing block 26, and the corner pressing plate 27 is slidably connected to the motor rotor 10.

[0035] On the other side of each hinged pressing block 26, a connecting plate 28 is fixedly connected, a guiding shaft 29 is fixedly connected to one side of the connecting plate 28, and two sliding rings 30 are fixedly connected to the outer wall of the guiding shaft 29, and the two sliding rings 30 are slidably connected to the stable guide rail 19. The two limiting rings 18 are symmetrically arranged with respect to the stable guide rail 19, and the cross-sectional shapes of the two limiting rings 18 are both circular rings.

[0036] In this embodiment, as shown in the attached Figures 7-9 figure, the shaft synchronous pressing mechanism includes a linkage block 31 fixedly arranged at the bottom end of the sleeve column 9; a pressing strip 32 is fixedly connected to one side of the linkage block 31, and an arc-shaped upper pressing block 33 is fixedly connected to one side of the pressing strip 32, and the arc-shaped upper pressing block 33 is used for pressing the motor rotor 10. A linkage plate 34 is fixedly connected to the lower surface of the pressing strip 32, and an arc-shaped middle pressing block 35 is fixedly connected to one end of the linkage plate 34, and an arc-shaped lower pressing block 36 is slidably connected to the outer wall of the motor rotor 10 and below the arc-shaped middle pressing block 35; an extrusion plate 37 is fixedly connected to one side of the outer wall of the arc-shaped lower pressing block 36, and an extrusion block 38 is fixedly connected to one end of the extrusion plate 37, and the extrusion block 38 is fixedly connected to another sleeve column 9. Both the arc-shaped middle pressing block 35 and the arc-shaped upper pressing block 33 are slidably connected to the motor rotor 10, and the cross-sectional shapes of the arc-shaped upper pressing block 33 and the arc-shaped middle pressing block 35 are circular arcs.

[0037] The usage method of the strength testing device for the motor rotor of the present invention is as follows:

[0038] First, when the present invention performs synchronous and stable pressing, bolts are inserted into the installation block 16 to dock and fix the installation block 16 with the operation table. In this way, multiple installation blocks 16 can provide a supporting force for the test platform 1, increasing the stability of the test platform 1. And the controller 17 supports the test platform 1, the test platform 1 supports the positioning ring 15, and the positioning ring 15 performs positioning support on the bottom end of the motor rotor 10.

[0039] Set the test pressure value on the controller 17. Then, the pressure cylinder 2 pushes the pressure sensor 3, the pressure sensor 3 pushes the sleeve block 4, the sleeve block 4 squeezes the hinge shaft 5, the hinge shaft 5 drives the hinge plate 6 to squeeze, the hinge plate 6 drives the stable guide shaft 13 to rotate clockwise, and the stable guide shaft 13 stably rotates clockwise along the inner wall of the guide groove 14. At the same time, the hinge plate 6 drives the stable rotating ring 7 to rotate clockwise, the stable rotating ring 7 makes multiple guide pressure frames 8 rotate clockwise synchronously, the guide pressure frames 8 drive the sleeve columns 9 to move to the right, so that multiple sleeve columns 9 approach the center point of the motor rotor 10, and can perform the pressure test stably and synchronously. At the same time, the pressure cylinder 2 drives the socket block 12 to rotate, the socket block 12 rotates on the outer wall of the hinge rod 11, and the test platform 1 supports the hinge rod 11 to increase the stability of the hinge rod 11.

[0040] At the same time, when the present invention performs corner synchronous pressure application, at the same time, the sleeve column 9 drives the two limit rings 18 to move to the right, and the sleeve column 9 moves to the right along the outer wall of the stable sliding column 20, and the sleeve column 9 can also move to the right along the inner wall of the stable sliding column 20. The sleeve column 9 drives the concave block 22 to move to the right, the concave block 22 drives the two connecting shafts 23 to move to the right synchronously, the connecting shafts 23 drive one end of the socket pressing strip 24, the socket pressing strip 24 drives the extrusion column 25 to squeeze, the extrusion column 25 squeezes the hinge pressing block 26, and the hinge pressing block 26 squeezes the corner pressing plate 27. At the same time, the hinge pressing block 26 drives the connecting plate 28 to move to the right, the connecting plate 28 makes the guide shaft 29 move to the right for guiding, the guide shaft 29 drives the two sliding rings 30 to move to the right, and the two sliding rings 30 can slide along the outer wall of the stable guide rail 19. At the same time, the guide shaft 29 also moves to the right for guiding along the inside of the stable guide rail 19. In this way, the corner pressing plate 27 can apply a stable pressure value to the corner position of the iron core of the motor rotor 10, and multiple corner pressing plates 27 respectively apply stable pressure to multiple iron core corner positions of the motor rotor 10 for strength testing synchronously.

[0041] At the same time, when the present invention performs shaft synchronous pressure application, at the same time, the rightward movement of the sleeve column 9 drives the linkage block 31 to move to the right, the linkage block 31 drives the extrusion strip 32 to move to the right, the extrusion strip 32 makes the arc-shaped upper pressing block 33 move to the right and squeeze, the arc-shaped upper pressing block 33 squeezes at the upper position of the outer wall of the shaft of the motor rotor 10, and the extrusion strip 32 synchronously drives the linkage plate 34 to move to the right, the linkage plate 34 drives the arc-shaped middle pressing block 35 to move to the right, the arc-shaped middle pressing block 35 squeezes at the middle position of the outer wall of the shaft of the motor rotor 10, and another motor rotor 10 drives the extrusion block 38 to approach the center point of the motor rotor 10, the extrusion block 38 drives the extrusion plate 37 to approach the center point of the motor rotor 10, and the extrusion plate 37 drives the arc-shaped lower pressing block 36 to squeeze at the lower position of the outer wall of the shaft of the motor rotor 10, and stably applies pressure to different positions of the shaft of the motor rotor 10 for testing synchronously.

[0042] Finally, when the present invention checks the test status of the record, if the pressure value sensed by the pressure sensor 3 is the same as the pressure value set by the controller 17, the pressure cylinder 2 is closed by the controller 17, and then it is checked whether there is any damage problem at the core corner position of the motor rotor 10. At the same time, it is possible to check whether there is any bending damage problem at each lateral end position of the motor rotor 10, and a test record operation is performed to complete the stable pressure test on the motor rotor 10, so as to know the strength range of the motor rotor 10.

[0043] The content not described in detail in the specification belongs to the prior art well-known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited. Conventional equipment can be used. In this technical solution, since the electrical control components not mentioned belong to the prior art, they are not shown in the figure and will not be described here.

[0044] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A strength test device for a motor rotor, comprising a test platform (1), a pressure electric cylinder (2) and a pressure sensor (3), wherein the pressure electric cylinder (2) is located above the test platform (1), and the pressure sensor (3) is fixedly connected to the output end of the pressure electric cylinder (2), characterized in that: A synchronous and stable pressure-applying mechanism is provided on one side of the pressure sensor (3); The synchronous stable pressure-applying mechanism comprises a sleeve block (4) fixedly arranged on one side of the pressure sensor (3), and the inner wall of the sleeve block (4) is rotatably connected to a hinge shaft (5), the top end of the hinge shaft (5) is fixedly connected to a hinge plate (6), and one side of the hinge plate (6) is fixedly connected to a stabilizing swivel (7); The outer wall of the stabilizing rotating ring (7) is fixedly connected to a plurality of guide pressing frames (8), the inner wall of each guide pressing frame (8) is slidably connected to a sleeve column (9), and the interior of the stabilizing rotating ring (7) is slidably connected to a motor rotor (10); The top end of the sleeve column (9) is provided with a corner synchronous pressure mechanism; The bottom end of the sleeve column (9) is provided with a shaft synchronous pressure mechanism.

2. The motor rotor strength testing device according to claim 1, characterized in that: The sleeve block (4) is rotatably connected to the hinge plate (6), and the outer wall of the sleeve block (4) and the inner wall of the hinge plate (6) are both smooth surfaces.

3. The motor rotor strength testing device according to claim 1, characterized in that: The plurality of guide pressure frames (8) are arranged in a circular ring with equal spacing, and the cross-sectional shape of the stabilizing rotating ring (7) is a circular ring.

4. The motor rotor strength testing device according to claim 1, characterized in that: A sleeve block (12) is fixedly connected to one side of the pressure electric cylinder (2), and a hinge rod (11) is rotatably connected to the inner wall of the sleeve block (12); The hinged rod (11) is fixedly connected to the test platform (1).

5. The motor rotor strength testing device according to claim 1, characterized in that: The bottom end of the hinged plate (6) is fixedly connected to a stabilizing guide shaft (13), the outer wall of the stabilizing guide shaft (13) is provided with a guide groove (14), and the stabilizing guide shaft (13) is slidably connected to the test platform (1) to which the guide groove (14) belongs; A positioning ring (15) is fixedly connected to the top of the test platform (1) and close to the center point thereof, and the positioning ring (15) is plugged into the motor rotor (10).

6. The motor rotor strength testing device according to claim 1, characterized in that: A plurality of mounting blocks (16) are fixedly connected to the outer wall of the test platform (1), and a controller (17) is fixedly connected to the upper surface of the test platform (1) near the mounting blocks (16).

7. The motor rotor strength testing device according to claim 1, characterized in that: The corner synchronous pressure mechanism comprises a concave block (22) fixedly arranged on the top end of the sleeve column (9); Two limiting rings (18) are arranged above the guide pressure frame (8), the two limiting rings (18) are fixedly connected to the sleeve column (9), a stabilizing guide rail (19) is slidably connected between the two limiting rings (18), a stabilizing slide column (20) is fixedly connected to one side of the inner wall of the stabilizing guide rail (19), and a support plate (21) is fixedly connected to one end of the stabilizing guide rail (19), and the support plate (21) is fixedly connected to the test platform (1); The stabilizing guide rail (19) and the stabilizing slide column (20) are both slidably connected to the sleeve column (9); the top end of the inner wall of the concave block (22) is fixedly connected to two connecting shafts (23); the outer wall of each connecting shaft (23) is rotatably connected to a sleeve pressure strip (24); the inner wall of the sleeve pressure strip (24) is rotatably connected to a squeeze column (25) at a position away from the connecting shaft (23); The top end of the extrusion column (25) is fixedly connected to a hinged pressing block (26), and a corner pressing plate (27) is fixedly connected to one side of the hinged pressing block (26), and the corner pressing plate (27) is slidably connected to the motor rotor (10); The other side of each hinged pressure block (26) is fixedly connected to a connecting plate (28), one side of the connecting plate (28) is fixedly connected to a guide shaft (29), the outer wall of the guide shaft (29) is fixedly connected to two slip rings (30), and the two slip rings (30) are slidably connected to the stabilizing guide rail (19).

8. The motor rotor strength testing device according to claim 7, characterized in that: The two limiting rings (18) are symmetrically arranged with respect to the stabilizing guide rail (19), and the cross-sectional shapes of the two limiting rings (18) are both circular.

9. The motor rotor strength testing device according to claim 1, characterized in that: The shaft synchronous pressure mechanism comprises a linkage block (31) fixedly arranged at the bottom end of the sleeve column (9); One side of the linkage block (31) is fixedly connected to an extrusion strip (32), and one side of the extrusion strip (32) is fixedly connected to an arc-shaped upper pressing block (33), and the arc-shaped upper pressing block (33) is used to extrude the motor rotor (10); A linkage plate (34) is fixedly connected to the lower surface of the extrusion strip (32), and an arc-shaped middle pressure block (35) is fixedly connected to one end of the linkage plate (34); an arc-shaped lower pressure block (36) is slidably connected to the outer wall of the motor rotor (10) and located below the arc-shaped middle pressure block (35); An extrusion plate (37) is fixedly connected to one side of the outer wall of the arc-shaped lower pressing block (36), and an extrusion block (38) is fixedly connected to one end of the extrusion plate (37), and the extrusion block (38) is fixedly connected to another sleeve column (9).

10. The motor rotor strength testing device according to claim 9, characterized in that: The arc-shaped middle pressure block (35) and the arc-shaped upper pressure block (33) are both slidably connected to the motor rotor (10), and the cross-sectional shapes of the arc-shaped upper pressure block (33) and the arc-shaped middle pressure block (35) are circular arcs.

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