Rotor dynamic balance testing device

Abstract

A rotor dynamic balance testing device comprises a machine table, a fixing frame, a transmission mechanism and a base. The fixing frame is arranged on the machine table and used for installing a rotor, and a detection unit is arranged on the fixing frame; the transmission mechanism comprises a swing arm, a first rotating wheel, a second rotating wheel and a belt, the first rotating wheel and the second rotating wheel are rotatably arranged at the two ends of the swing arm respectively, and the belt is wound around the first rotating wheel and the second rotating wheel; the base is arranged on the machine table and is provided with a first driving part and a second driving part; the swing arm is hinged to the base and corresponds to the rotor; the first driving part is in driving connection with the swing arm; the second driving part is in driving connection with the second runner; during use, a to-be-tested rotor is installed on the fixing frame, then the first driving part is started to drive the belt to abut against the rotor, then the second driving part is started to drive the belt to move to drive the rotor to rotate, and the detection unit detects the vibration frequency of the rotor. And after the test is finished, closing the second driving part and driving the belt to be away from the rotor through the first driving part so as to replace a new rotor for test.

Description

TECHNICAL FIELD

[0001] The utility model belongs to dynamic balance test technical field, especially a rotor dynamic balance testing device. BACKGROUND

[0002] The rotor of the motor is the core component of the motor, and when the rotor rotates around the shaft, the centrifugal force is generated due to the uneven mass distribution relative to the shaft. This uneven effect on the rotor causes vibration, generates noise and accelerates the wear of the shaft, affecting the use experience of the product and the service life of the product. Therefore, the rotor of the motor needs to be dynamically balanced during production and processing.

[0003] The rotor dynamic balance test needs to use a special dynamic balance testing device. The dynamic balance testing device on the market currently mostly drives the rotor through a belt, and then monitors the vibration frequency of the rotor through a sensor. The specific structure and principle can be referred to the utility model patent with the application number 2023228511799. This kind of dynamic balance testing device at least has the following problems in actual use:

[0004] Firstly, when installing the rotor, the belt needs to be loosened first. After the rotor passes through the belt and is placed on the bearing groove of the two supporting seats, the motor connected with the belt is driven to move downward through the lifting assembly, so that the belt is tensioned and adheres to the rotor. The whole process is not only complicated to operate, but also the user is easy to touch the running belt by mistake, which is low in safety.

[0005] Secondly, every time the rotor is disassembled and assembled, the shape of the belt will change adaptively. After repeated use for many times, the toughness of the belt will be affected, which will cause the test accuracy to decrease. If the diameters of the rotors tested each time are different, the shape change range will be expanded, which will aggravate the irreversible elastic deformation of the belt and shorten the service life of the belt. UTILITY MODEL CONTENTS

[0006] TECHNICAL PROBLEM SOLVED

[0007] The utility model provides a rotor dynamic balance testing device, which can solve the problems in the background art.

[0008] TECHNICAL SCHEME

[0009] To achieve the above purpose, the utility model provides the following technical scheme:

[0010] A rotor dynamic balance testing device, comprising a machine table, a fixing frame, a transmission mechanism and a base; the fixing frame is arranged on the machine table and used for mounting a rotatable rotor, and a detection unit for detecting vibration frequency of the rotor is arranged on the fixing frame; the transmission mechanism comprises a swing arm, a first rotating wheel, a second rotating wheel and a belt, the first rotating wheel is rotatably mounted on a first end of the swing arm, the second rotating wheel is located on a second end of the swing arm, and the belt is wound on the first rotating wheel and the second rotating wheel; the base is arranged on the machine table, and a first driving part and a second driving part are mounted on the base; the swing arm is rotatably mounted on the base and corresponds to the rotor, the first driving part is drivingly connected with the swing arm to drive the belt to abut or move away from the rotor, and the second driving part is drivingly connected with the second rotating wheel to drive the belt to move.

[0011] Preferably, the fixing frame comprises two support seats, the two support seats are symmetrically arranged on the machine table, and the top ends of the two support seats are respectively provided with bearing grooves for placing shafts on both sides of the rotor.

[0012] Preferably, the support seat is slidingly connected with the machine table, and a locking piece matched with the machine table is arranged on the support seat, so that the support seat can be placed at a current position after sliding.

[0013] Preferably, the locking piece comprises a sliding block and a fastening bolt, a sliding groove is arranged on the machine table, the sliding block is slidingly mounted in the sliding groove, the fastening bolt is rotatably mounted on the support seat, one end of the fastening bolt extends into the sliding groove and is threadedly connected with the sliding block, and the tightness between the sliding block and the sliding groove can be adjusted by screwing the fastening bolt.

[0014] Preferably, a top block is vertically and slidingly mounted on the support seat, and the bearing groove is arranged on the top block; an adjusting bolt is threadedly connected with the support seat, and an end of the adjusting bolt abuts against the top block, the top block can be controlled to ascend and descend by rotating the adjusting bolt, so as to adjust the height position of the rotor.

[0015] Preferably, the bearing groove is V-shaped.

[0016] Preferably, the first driving part comprises a pneumatic cylinder, a first linkage block and a second linkage block; the first linkage block is mounted on the base and hinged with a main body of the pneumatic cylinder; the second linkage block is mounted on a telescopic shaft of the pneumatic cylinder and hinged with the swing arm, and the swing arm is driven to rotate by starting the pneumatic cylinder.

[0017] Preferably, the second driving part comprises a motor, a driving wheel, a driven wheel and a belt, the base is provided with an axle block connected with the swing arm, and an axle rod is rotatably installed in the axle block; the axle rod extends to the outside and is fixed with the driven wheel and the second rotating wheel respectively, the motor is installed on the base, the output shaft of the motor is fixed with the driving wheel, the belt is wound on the driving wheel and the driven wheel, and the motor is started to drive the second rotating wheel to rotate.

[0018] Preferably, a bearing is installed at the rotating connection between the axle block and the axle rod.

[0019] Preferably, a proximity switch is installed on the swing arm, the proximity switch is electrically connected with the first driving part and the second driving part, a positioning block is installed on the base, and the proximity switch can be aligned or misaligned with the positioning block with the rotation of the swing arm.

[0020] Preferably, a base is vertically and slidably installed on the base, and the base is arranged on the machine table; a vertically designed screw rod is rotatably installed on the base, the base is provided with a screw block in threaded connection with the screw rod, and the rotation of the screw rod can control the lifting of the base, so as to adjust the height position of the belt.

[0021] (Three) beneficial effects

[0022] The rotor dynamic balance testing device provided by the utility model limits the belt on the swing arm through the design of the first rotating wheel and the second rotating wheel, so that the shape of the belt is fixed, the toughness of the belt is prevented from decreasing or irreversible elastic deformation occurs, the service life of the belt is prolonged and the testing precision is ensured; the first driving part is designed to drive the swing arm to rotate, so that the belt independent of the fixing frame can move away from or close to the rotor, this design not only facilitates users to assemble and disassemble the rotor of various diameters and sizes for testing, improves the adaptability, but also can avoid that the user touches the running belt in the process of assembling and disassembling the rotor, improves the safety. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings are used to provide further understanding of the utility model, and constitute a part of the specification, are used together with the embodiments of the utility model to explain the utility model, and do not constitute the limitation of the utility model, in the drawings:

[0024] Figure 1 The use state of the utility model is shown Figure 1 ;

[0025] Figure 2 The use state of the utility model is shown Figure 2 ;

[0026] Figure 3The use state of the utility model is shown Figure 3 ;

[0027] Figure 4 The A-A sectional view of Figure 3 is shown

[0028] Figure 5 The B-B sectional view of Figure 3 is shown

[0029] Figure 6 The structure diagram of the utility model fixed frame is shown Figure 1 ;

[0030] Figure 7 The structure diagram of the utility model fixed frame is shown Figure 2 ;

[0031] Figure 8 The C-C sectional view of Figure 7 is shown

[0032] Figure 9 The partial structure diagram of the utility model is shown

[0033] Figure 10 The exploded view of Figure 9 is shown Figure 1 ;

[0034] Figure 11 The exploded view of Figure 9 is shown Figure 2 .

[0035] In the figure: 1 machine table, 11 sliding groove, 2 fixed frame, 20 bearing groove, 21 supporting seat, 22 locking piece, 221 sliding block, 222 fastening bolt, 23 top block, 24 adjusting bolt, 3 rotor, 30 rotating shaft, 4 detection unit, 5 transmission mechanism, 50 swing arm, 51 first rotating wheel, 52 second rotating wheel, 53 belt, 6 base, 61 first driving part, 610 air cylinder, 611 first linkage block, 612 second linkage block, 62 second driving part, 620 motor, 621 driving wheel, 622 driven wheel, 623 belt, 63 shaft block, 64 shaft rod, 65 bearing, 67 positioning block, 68 screw block, 7 proximity switch, 8 base, 80 screw rod. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present application.

[0037] It is to be understood that the drawings are only intended for reference and illustration, and are not intended to limit the present application. The connection relationship shown in the drawings is only for the convenience of clear description, and does not limit the connection mode.

[0038] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component, or a middle component can exist at the same time. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs. It should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application.

[0039] Referring to the accompanying Figure 1 -attached Figure 3 A rotor dynamic balance testing device, comprising a machine table 1, a fixing frame 2, a transmission mechanism 5 and a base 6; the fixing frame 2 is arranged on the machine table 1 and is used for mounting a rotatable rotor 3, and the fixing frame 2 is provided with a detection unit 4 for detecting the vibration frequency of the rotor 3; the transmission mechanism 5 comprises a swing arm 50, a first rotating wheel 51, a second rotating wheel 52 and a belt 53, the first rotating wheel 51 is rotatably mounted at a first end of the swing arm 50, the second rotating wheel 52 is located at a second end of the swing arm 50, and the belt 53 is wound on the first rotating wheel 51 and the second rotating wheel 52; the base 6 is arranged on the machine table 1, and the first driving part 61 and the second driving part 62 are mounted on the base 6; the swing arm 50 is rotatably mounted on the base 6 and corresponds to the rotor 3, the first driving part 61 is drivingly connected with the swing arm 50 to drive the belt 53 to abut or move away from the rotor 3; the second driving part 62 is drivingly connected with the second rotating wheel 52 to drive the belt 53 to move.

[0040] Specifically, before use, ensure that the swing arm 50 is away from the fixing frame 2 to give the rotor 3 an installation space; when in use, first rotatably mount the rotor 3 to be tested on the fixing frame 2, then start the first driving part 61 to drive the swing arm 50 to approach the fixing frame 2, until the belt 53 abuts the rotor 3, then start the second driving part 62 to drive the second rotating wheel 52 to rotate, so that the belt 53 moves and drives the rotor 3 to rotate, so that the detection unit 4 mounted on the fixing frame 2 detects the vibration frequency of the rotor 3;

[0041] After the test is completed, the second driving part 62 is first closed to stop the operation of the belt 53, and then the first driving part 61 is used to drive the swing arm 50 to rotate away from the fixed frame 2, so that the belt 53 is separated from the rotor 3 and the space is re-opened for the user to take out the tested rotor 3 and replace a new rotor 3 for testing.

[0042] During the whole operation process, the user only needs to install the rotor 3 on the fixed frame 2 without contacting the belt 53; on the other hand, since the swing arm 50 has a certain swing range, the installation space between the belt 53 and the fixed frame 2 can be changed, so that rotors 3 of various diameters can be installed, and since the belt 53 is limited by the first rotating wheel 51 and the second rotating wheel 52, the shape of the belt 53 remains unchanged when testing rotors 3 of different diameters.

[0043] In summary, the utility model discloses a first rotating wheel 51 and a second rotating wheel 52 are designed to limit the belt 53 on the swing arm 50, so that the shape of the belt 53 is fixed, preventing the belt 53 from losing flexibility or incurring irreversible elastic deformation, prolonging the service life of the belt 53 and ensuring the test accuracy; the first driving part 61 is designed to drive the swing arm 50 to rotate, so that the belt 53 independent of the fixed frame 2 can move away from or approach the rotor 3, which not only facilitates the user to install and dismount rotors 3 of various diameters to improve the adaptability, but also avoids the user from accidentally touching the running belt 53 during the installation and dismounting of the rotor 3, improving the safety.

[0044] It should be noted that the detection unit 4 for detecting the vibration frequency of the rotor 3 generally uses a pressure sensor or other devices that can test dynamic balance, and since there are various types and they all belong to the prior art, the utility model does not limit and elaborate on this.

[0045] Referring to the accompanying drawings Figure 2 - the accompanying drawings Figure 8 The fixed frame 2 includes two support seats 21, which are symmetrically arranged on the machine table 1, and the top end of each support seat 21 is provided with a bearing groove 20, and the two bearing grooves 20 are respectively used to place the shafts 30 on both sides of the rotor 3.

[0046] Specifically, the rotor 3 is placed between the two support seats 21, and the shafts 30 on both sides of the rotor 3 are respectively clamped in the bearing grooves 20, so that the rotor 3 can be installed, and when disassembled, the rotor 3 is directly lifted to make the two shafts 30 disengage from the bearing grooves 20, so that the rotor 3 can be removed, and the whole disassembly process is relatively simple; and since the belt 53 surrounds the bearing grooves 20 and abuts against the rotor 3 during the test, the rotor 3 can be prevented from disengaging from the two support seats 21.

[0047] It should be noted that, in addition to the above structure design, the rotor 3 can be rotatably mounted to the fixed frame 2 by other mounting methods, since the mounting methods are various and relatively common in the mechanical field, therefore, the utility model does not limit this.

[0048] Referring to the accompanying drawings Figure 3 -attached Figure 8 The support seat 21 is slidably connected with the machine table 1, and the support seat 21 is provided with a locking piece 22 matched with the machine table 1, so that the support seat 21 can be parked at the current position after sliding; this design makes the spacing between the two support seats 21 adjustable, thereby adapting to rotors 3 of different length sizes.

[0049] Further, the type of locking piece 22 is various, and the utility model does not limit this, for the convenience of understanding, in this embodiment, the locking piece 22 includes a sliding block 221 and a fastening bolt 222, the machine table 1 is provided with a sliding groove 11, the sliding block 221 is slidably mounted in the sliding groove 11, and the fastening bolt 222 is rotatably mounted on the support seat 21, and one end of the fastening bolt 222 extends into the sliding groove 11 and is threadedly connected with the sliding block 221, and the tightness between the sliding block 221 and the sliding groove 11 can be adjusted by screwing the fastening bolt 222.

[0050] Specifically, in use, reverse rotation of the fastening bolt 222 drives the sliding block 221 to loosen the sliding groove 11, so that the support seat 21 can be moved along the length direction of the sliding groove 11 to adjust the horizontal position, and after the support seat 21 is moved to the appropriate position, the fastening bolt 222 is turned to drive the sliding block 221 to press the sliding groove 11, so that the support seat 21 can be fixed at the current position.

[0051] Referring to the accompanying drawings Figure 6 -attached Figure 8 A top block 23 is vertically and slidably mounted on the support seat 21, and the bearing groove 20 is arranged on the top block 23; the support seat 21 is also threadedly connected with an adjusting bolt 24, the end of the adjusting bolt 24 abuts against the top block 23, and the top block 23 can be lifted and lowered by rotating the adjusting bolt 24, thereby adjusting the height position of the rotor 3.

[0052] Specifically, since the swing range of the swing arm 50 is limited, the movement stroke of the belt 53 in the vertical direction is fixed, in this case, if the rotor 3 with a smaller diameter size is replaced, it is difficult to ensure that the belt 53 is normally contacted; the cooperation of the adjusting bolt 24 and the top block 23 can adjust the height position of the rotor 3, so that the rotor 3 with a smaller size can also be adapted to the belt 53, and the test stability is ensured.

[0053] Further, the shape of the bearing groove 20 is various, for example, semicircular, square and the like, and the utility model does not limit this, in order to make the rotating shaft 30 of the rotor 3 suspended, and facilitate the rotation of the rotor 3, the bearing groove 20 in the utility model is V-shaped as shown in the accompanying drawings Figure 7 .

[0054] Referring to the accompanying drawings Figure 1 - the accompanying drawings Figure 4 and the accompanying drawings Figure 9 - the accompanying drawings Figure 11 , the first driving part 61 comprises a cylinder 610, a first linkage block 611 and a second linkage block 612; the first linkage block 611 is installed on the base 6 and is hingedly connected with the cylinder 610 body; the second linkage block 612 is installed on the cylinder 610 telescopic shaft and is hingedly connected with the swing arm 50, and the cylinder 610 is started to drive the swing arm 50 to rotate.

[0055] Specifically, after the cylinder 610 is started, the cylinder 610 body will adaptively swing, and the cylinder 610 telescopic shaft will press the swing arm 50 to drive the swing arm 50 to rotate around the base 6, and then drive the belt 53 to move away from or abut against the rotor 3.

[0056] It should be noted that, in addition to the above structure, the first driving part 61 can also adopt other structures, for example, the cylinder 610 can be replaced by a lead screw motor, since the first driving part 61 is various and is relatively common in the mechanical field, therefore, the utility model does not limit this.

[0057] Referring to the accompanying drawings Figure 1 - the accompanying drawings Figure 4 and the accompanying drawings Figure 9 - the accompanying drawings Figure 11 , the second driving part 62 comprises a motor 620, a driving wheel 621, a driven wheel 622 and a belt 623, the base 6 is provided with an axle block 63 rotatably connected with the swing arm 50, and an axle rod 64 is rotatably installed in the axle block 63; the two ends of the axle rod 64 extend to the outside and are respectively fixedly connected with the driven wheel 622 and the second rotating wheel 52, the motor 620 is installed on the base 6, and the output shaft of the motor 620 is fixedly connected with the driving wheel 621, the belt 623 is wound on the driving wheel 621 and the driven wheel 622, and the motor 620 is started to drive the second rotating wheel 52 to rotate.

[0058] Specifically, after the motor 620 is started, the motor 620 drives the driving wheel 621, the belt 623 and the driven wheel 622 to rotate, and the driven wheel 622 drives the second rotating wheel 52 through the axle rod 64, so that the belt 53 rotates; since the axle rod 64 is located in the axle block 63, the rotation of the swing arm 50 will not interfere with the second rotating wheel 52.

[0059] It should be noted that, in addition to the above structure, the second driving part 62 can also adopt other structures, for example, the driving wheel 621, the driven wheel 622 and the belt 623 can be removed, and the axle rod 64 can be directly driven by the motor 620, since the second driving part 62 is various and is relatively common in the mechanical field, therefore, the utility model does not limit this.

[0060] Referring to the accompanying drawings Figure 4 and the accompanying drawings Figure 9- Figure 1 is a schematic diagram of the dynamic balance testing device according to the present application; Figure 11 The rotation joint between the shaft block 63 and the shaft rod 64 is equipped with a bearing 65, which can reduce the friction between the shaft block 63 and the shaft rod 64 and improve the rotation stability of the shaft rod 64.

[0061] Referring to Figure 1, Figure 1 - Figure 1 is a schematic diagram of the dynamic balance testing device according to the present application; Figure 3 and Figure 1, Figure 9 The swing arm 50 is equipped with a proximity switch 7, which is electrically connected with the first driving part 61 and the second driving part 62, and the base 6 is equipped with a positioning block 67, and the proximity switch 7 can be aligned or misaligned with the positioning block 67 when the swing arm 50 rotates.

[0062] Specifically, in the process of the first driving part 61 driving the swing arm 50 to rotate forward, the proximity switch 7 gradually approaches the positioning block 67, and when the proximity switch 7 is aligned with the positioning block 67, the proximity switch 7 sends a closing instruction to the first driving part 61, so that the swing arm 50 stops at the current position, ensuring that the belt 53 can stably abut against the rotor 3; at the same time, the proximity switch 7 also sends an opening instruction to the second driving part 62, so that the second driving part 62 drives the second rotating wheel 52 to rotate, and then drives the rotor 3 to rotate through the belt 53, so that the detection unit 4 can detect the vibration frequency of rotation, realizing dynamic balance testing.

[0063] After the testing is completed, the first driving part 61 is restarted to drive the swing arm 50 to rotate reversely, so that the proximity switch 7 gradually moves away from the positioning block 67, and when the proximity switch 7 is completely misaligned with the positioning block 67, the proximity switch 7 sends a closing instruction to the first driving part 61, so that the swing arm 50 stops at the current position, ensuring that the belt 53 is completely away from the fixed frame 2 to provide a disassembly and assembly space for the rotor 3; at the same time, the proximity switch 7 also sends a closing instruction to the second driving part 62, so that the belt 53 stops, avoiding that the user is injured by accidentally touching the belt 53 in the process of taking and placing the rotor 3, and improving the operation safety.

[0064] It should be noted that the positioning block can be installed on the base 6 in a threaded connection manner, so as to facilitate the user to adjust the position of the positioning block; before actual use, the user needs to adjust the position of the positioning block 67 according to the diameter size of the rotor 3 to be tested, so that the proximity switch 7 can be aligned with the positioning block 67 more slowly or more quickly, thereby increasing or reducing the maximum swing amplitude of the swing arm 50, so as to adapt to the rotor 3 of the corresponding diameter size.

[0065] Referring to Figure 1, Figure 1 - Figure 1 is a schematic diagram of the dynamic balance testing device according to the present application; Figure 3 and Figure 1, Figure 9 - Figure 1 is a schematic diagram of the dynamic balance testing device according to the present application; Figure 11The base 6 is vertically and slidably provided with a pedestal 8, which is arranged on the machine table 1. The pedestal 8 is rotatably provided with a vertical screw rod 80, and the base 6 is provided with a screw block 68 which is threadedly connected with the screw rod 80. The screw rod 80 is rotated to control the lifting of the base 6, thereby adjusting the height position of the belt 53.

[0066] Specifically, since the swing arm 50 has a limited swing range, the moving stroke of the belt 53 in the vertical direction is fixed. If the fixed frame 2 is not provided with the slidable top block 23 and the adjusting bolt 24 for driving the top block 23 to move, the height position of the rotor 3 placed on the fixed frame 2 is fixed. In this case, if the rotor 3 with a smaller diameter is replaced, it is difficult to ensure that the belt 53 normally contacts the rotor 3. However, the cooperation of the pedestal 8, the base 6 and the screw rod 80 can adjust the height position of the base 6, thereby adjusting the height position of the belt 53, so that the belt 53 can be adapted to the rotor 3 with a smaller size, and the test stability is ensured.

[0067] It should be noted that in the actual production process, the height position of the rotor 3 or the belt 53 can be adjusted alone to improve the adaptability, or the rotor 3 or the belt 53 can be adjusted at the same time, which is not limited in the present application.

[0068] It should be noted that although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application.

Claims

1. A rotor dynamic balancing testing device, comprising a machine base (1), characterized in that, Also includes: A fixed frame (2) is provided on the machine base (1) and is used to install a rotatable rotor (3). The fixed frame (2) is provided with a detection unit (4) for detecting the vibration frequency of the rotor (3). The transmission mechanism (5) includes a swing arm (50), a first rotating wheel (51), a second rotating wheel (52), and a belt (53). The first rotating wheel (51) is rotatably mounted on the first end of the swing arm (50), the second rotating wheel (52) is located at the second end of the swing arm (50), and the belt (53) is wound around the first rotating wheel (51) and the second rotating wheel (52). A base (6) is disposed on the machine tool (1), and a first drive unit (61) and a second drive unit (62) are mounted on the base (6); a swing arm (50) is rotatably mounted on the base (6) and corresponds to the rotor (3); the first drive unit (61) is driven connected to the swing arm (50) to drive the belt (53) to abut or move away from the rotor (3); the second drive unit (62) is driven connected to the second wheel (52) to drive the belt (53) to move.

2. The rotor dynamic balancing testing device according to claim 1, characterized in that, The fixed frame (2) includes two support seats (21), which are symmetrically arranged on the machine base (1). Each of the two support seats (21) has a bearing groove (20) at its top. The two bearing grooves (20) are used to place the rotating shafts (30) on both sides of the rotor (3).

3. The rotor dynamic balancing testing device according to claim 2, characterized in that, The support base (21) is slidably connected to the machine base (1), and the support base (21) is provided with a locking piece (22) that cooperates with the machine base (1) so that the support base (21) can be stopped after sliding.

4. The rotor dynamic balancing testing device according to claim 2, characterized in that, A top block (23) is vertically and slidably mounted on the support base (21), and the bearing groove (20) is set on the top block (23); an adjusting bolt (24) is also threadedly connected to the support base (21), and the end of the adjusting bolt (24) abuts against the top block (23). Rotating the adjusting bolt (24) can control the lifting and lowering of the top block (23), thereby adjusting the height position of the rotor (3).

5. A rotor dynamic balancing testing device according to any one of claims 2 or 4, characterized in that, The bearing groove (20) is V-shaped.

6. The rotor dynamic balancing testing device according to claim 1, characterized in that, The first drive unit (61) includes a cylinder (610), a first linkage block (611), and a second linkage block (612); the first linkage block (611) is mounted on the base (6) and hinged to the main body of the cylinder (610); the second linkage block (612) is mounted on the telescopic shaft of the cylinder (610) and hinged to the swing arm (50), thereby activating the cylinder (610) to drive the swing arm (50) to rotate.

7. The rotor dynamic balancing testing device according to claim 1, characterized in that, The second drive unit (62) includes a motor (620), a drive wheel (621), a driven wheel (622), and a tire (623). The base (6) is provided with a shaft block (63) rotatably connected to the swing arm (50). A shaft rod (64) is rotatably installed inside the shaft block (63). The two ends of the shaft rod (64) extend to the outside and are respectively fixed to the driven wheel (622) and the second rotating wheel (52). The motor (620) is mounted on the base (6), and the output shaft of the motor (620) is fixed to the drive wheel (621). The tire (623) is wound around the drive wheel (621) and the driven wheel (622). The motor (620) is started to drive the second rotating wheel (52) to rotate.

8. The rotor dynamic balancing testing device according to claim 7, characterized in that, A bearing (65) is installed at the rotatable connection between the shaft block (63) and the shaft (64).

9. The rotor dynamic balancing testing device according to claim 1, characterized in that, A proximity switch (7) is installed on the swing arm (50). The proximity switch (7) is electrically connected to the first drive unit (61) and the second drive unit (62). A positioning block (67) is installed on the base (6). The proximity switch (7) can be aligned with or offset from the positioning block (67) as the swing arm (50) rotates.

10. A rotor dynamic balancing testing device according to claim 1, characterized in that, A base (8) is vertically and slidably mounted on the base (6), and the base (8) is set on the machine tool (1); a vertically designed screw (80) is rotatably mounted on the base (8), and a screw block (68) is provided on the base (6) that is threadedly connected to the screw (80). Rotating the screw (80) can control the lifting and lowering of the base (6), thereby adjusting the height position of the belt (53).

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