A vertical dual-disc rotor vibration test bench with adjustable multiple vibration factors

Abstract

This invention discloses a vertical double-disc rotor vibration test bench with adjustable multiple vibration factors, comprising an L-shaped base, a variable frequency motor, a motor bracket, a coupling, a rotating shaft, a bearing housing, a lateral movement device, discs, a sliding key, a sensor bracket, a magnetic powder brake, a magnetic powder brake bracket, a magnetic powder tension controller, a computer, an information acquisition unit, a signal conditioner, a frequency converter, an inductive sensor, a T-shaped slider, and mass blocks. The unbalanced mass can be controlled by adjusting the lateral movement device to prevent shaft misalignment, or by adding or removing mass blocks on the discs. The magnetic powder tension controller can also be adjusted to control the load on the magnetic powder brake and change the axial position of the double discs. Under these vibration excitations, the displacement of the discs in the X and Y directions is recorded using inductive sensors to analyze the disc vibration characteristics. This invention is applicable to rotor experiments simulating various vibration excitations, aiming to verify the accuracy of theoretical analysis or provide a reference for reducing vibration in actual mechanical equipment.

Description

Technical Field

[0001] This invention relates to the field of rotor system experimental technology, specifically to a vertical double-disc rotor vibration test bench with adjustable multiple vibration factors. Background Technology

[0002] The rotor systems in large rotating mechanical equipment such as nuclear power plant main circulation pumps and turbine units are usually vertical structures. Their layout and load-bearing conditions differ significantly from those of horizontal bearing-rotor systems. In order to simulate the various actual working conditions of these devices, it is necessary to build a vertical rotor test bench.

[0003] The structures of the components on existing vertical rotor test benches are generally relatively fixed, and their relative positions in each direction cannot be changed. This limits the flexibility of the test device to meet different experimental requirements and greatly increases the cost of simulating complex dynamic working conditions, such as shaft misalignment and mass imbalance. This results in limitations of the test device in adapting to the testing and analysis needs of mechanical equipment under different working conditions.

[0004] Existing vertical rotor test benches have relatively limited functionality, mainly providing basic measurement and analysis functions, and lack the ability to simulate vibration test conditions under multiple factors. This limits the application of the test benches in teaching, scientific research, and practical production, and cannot meet the needs of analyzing complex vibration characteristics. Summary of the Invention

[0005] The purpose of this invention is to overcome the aforementioned technical shortcomings and propose a vertical double-disc rotor vibration test bench with adjustable multiple vibration-inducing factors. This invention can simulate various vibration-inducing factors, including shaft misalignment, disk mass imbalance, workload variation, and axial movement. Therefore, this invention can provide more comprehensive vibration characteristic analysis, improve the accuracy and practicality of experiments, and thus meet the needs of rotating machinery design and maintenance.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a vertical double-disc rotor vibration test bench with adjustable multiple vibration factors, characterized in that it includes: an L-shaped base, a variable frequency motor, a motor bracket, a coupling, a rotating shaft, a bearing seat, a transverse moving device, a disc, a sliding key, a sensor bracket, a magnetic powder brake, a magnetic powder brake bracket, a magnetic powder tension controller, a computer, an information acquisition unit, a signal conditioner, a frequency converter, an inductive sensor, a T-shaped slider, and a mass block; in one possible technical solution, further, the L-shaped base has two T-shaped grooves on the surface of the upper base and several through holes, and a triangular bracket is welded to each of the left and right ends of the surfaces of the upper and lower bases to fix the upper and lower bases, and the lower base has several corresponding through holes.

[0007] In one possible technical solution, the variable frequency motor is further positioned on the upper surface of an L-shaped base. A motor bracket is located at the front end of the motor to secure it. The bottom of the motor bracket has four bolt holes, and the front of the motor bracket has four through holes. The through holes at the front of the motor bracket are connected to the front end of the variable frequency motor with screws, and the lower end of the motor bracket is connected to the through holes of the upper base with bolts. The rear end of the variable frequency motor is connected to a frequency converter. The frequency converter is equipped with switches for controlling the speed of the variable frequency motor, emergency stop, and movement. The frequency converter can control the speed of the variable frequency motor, facilitating the recording of speed data.

[0008] In one possible technical solution, the sensor bracket is further provided with a slider at its lower end, and through holes at both ends of the slider. The slider is connected to the T-slot on the right side of the upper base surface with screws. The upper end of the slider is a rectangular block, and the rectangular block has a through hole at the same height as the rotating shaft. A rectangular plate is horizontally connected above the rectangular block, and the rectangular plate has a through hole. The sensor bracket can move with the disk, which facilitates the recording of the displacement data of the two disks in the X and Y directions, and obtains the vibration characteristics of the two disks.

[0009] In one possible technical solution, the rotating shaft has a keyway in the middle and a coupling at its front end. The coupling has set screw holes at both ends, allowing the variable frequency motor extension shaft to be connected to the rotating shaft and secured with set screws via the coupling. The rotating shaft is also equipped with a bearing housing, a disc, a keyway, and a magnetic powder brake.

[0010] In one possible technical solution, the bearing housing further includes a deep groove ball bearing in the center, and a bearing sleeve in the center of the bearing. The bearing sleeve secures the deep groove ball bearing, and a sleeve with a groove in the center serves as a shoulder to fix the bearing sleeve at both ends. The sleeve has two screw holes, and the sleeve is fixed to the rotating shaft with screws.

[0011] In one possible technical solution, a lateral moving device is further placed at the lower end of the bearing seat. Two screw holes are opened below the bearing seat (6), and the lateral moving device is fixed to the lower end of the bearing seat with screws. The lateral moving device is divided into upper and lower parts. The bottom end of the lower lateral moving device is connected to the T-shaped slider with screws. The T-shaped slider has through holes at both ends and is fixed to the T-shaped groove on the left side of the upper base with screws. The lower lateral moving device has a T-shaped rectangular block with a rack at the front end and a scale at the rear end. The rack has two holes on its surface and is fixed to the front end of the T-shaped rectangular block with screws. The upper lateral moving device has a T-shaped platform at the lower end of the rectangular block, which moves laterally in conjunction with the T-shaped groove of the lower lateral moving device. The rectangular block has a through hole in the middle for assembling a short shaft. The short shaft has a shoulder at the front end of the rectangular block and a groove on the shaft. An axial retaining ring is installed on the groove. A circular knob is provided at the rear end of the rectangular block. The short shaft has a gear mounted on the front end of the rectangular block. The front end of the gear is fixed by the shoulder of the short shaft, and the rear end is fixed by a screw through a sleeve with a hole.

[0012] In one possible technical solution, the disk is further connected to the slide key with screws. The disk has three through holes and three side through holes. The large through hole can hold a mass block. The hole can be used to fix the mass block with screws. The disk has a slide key groove in the middle.

[0013] In one possible technical solution, the sliding key is further positioned between the disk and the rotating shaft. The sliding key has a screw hole at its lower end for connecting it to the disk with screws. The sliding key also has a through hole at the rear of the disk for connecting to the rotating shaft with screws. In another possible technical solution, the large through hole on the disk allows for the adjustment of the magnitude and direction of the unbalanced mass by placing a mass block or small ball.

[0014] The magnetic powder brake has an extension shaft at its front end, which is fixed to the rotating shaft at both ends of a coupling with set screws. The magnetic powder brake is connected to a magnetic powder tension controller. The magnetic powder tension controller is equipped with a tension adjustment knob and a start / stop switch. A magnetic powder brake bracket is mounted on the upper end of the magnetic powder brake and connected to it with screws. The upper end of the magnetic powder brake bracket has through holes that connect to the magnetic powder brake with screws, and the lower end of the magnetic powder brake bracket has two through holes that are bolted to the corresponding through holes on the upper base.

[0015] In one possible technical solution, the signal conditioner is further connected to the inductive sensor, the information acquisition unit is connected to the signal conditioner, and its computer is connected to the information acquisition unit. The inductive sensor is placed on a sensor bracket and connected to the sensor bracket via an inductive sensor threaded nut.

[0016] In one possible technical solution, the inductive sensor on the sensor bracket collects the displacement of the disk in the X and Y directions. The signal is amplified, sorted, and processed by the signal conditioner. The data is then transmitted to the computer by the information acquisition device. Finally, the vibration characteristics of the disk are obtained through software analysis and processing.

[0017] This invention provides a vertical dual-disc rotor vibration test bench with adjustable vibration factors. A variable frequency motor 2, bearing housing, discs, sliding keys, and a magnetic powder brake are connected via a rotating shaft. The shaft can be misaligned by changing the displacement of the lateral movement device, or the magnitude and direction of the unbalanced mass can be adjusted by adding or removing eccentric mass blocks on the discs. Furthermore, the load force applied by the magnetic powder brake can be adjusted via a magnetic powder tension controller. Under these vibration excitations, the displacement of the discs in the X and Y directions is recorded by inductive sensors to calculate and analyze the changes in disc vibration. This test bench can conduct multi-condition experiments under various vibration factors to verify the accuracy of theoretical analysis or provide a reference for reducing vibration in actual mechanical equipment.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. This experimental platform can change the displacement of the lateral moving device, add or remove eccentric mass blocks on the disk, and adjust the load force applied by the magnetic powder brake through the magnetic powder tension controller. This can simulate complex working conditions such as shaft asymmetry, mass imbalance and load changes. This simulation capability of multiple vibration factors allows the experimental platform to more comprehensively analyze and solve various problems that may be encountered in actual machinery.

[0020] 2. This experimental platform, with its design of two movable disks on the shaft, can simulate rotor systems with different mass distributions at different locations. This improves the diversity and flexibility of experiments in studying the critical speed, stability, and vibration characteristics of rotor systems with flexible and variable parameters.

[0021] 3. The sensors equipped on this experimental setup can measure the vibration characteristics of the dual disks, which is crucial for analyzing the dynamic response of the rotor system. Using this data, researchers can more accurately understand and predict the dynamic and vibration characteristics of the rotor system. Attached Figure Description

[0022] Figure 1 This is the overall assembly drawing of the present invention.

[0023] Figure 2 This is a drawing of the motor bracket parts of the present invention.

[0024] Figure 3 This is a bearing housing assembly diagram of the present invention.

[0025] Figure 4This is an assembly drawing of the lateral moving device of the present invention.

[0026] Figure 5 This is a part drawing of the disc of the present invention.

[0027] Figure 6 This is a drawing of the slide key component of the present invention.

[0028] Figure 7 This is a part drawing of the sensor bracket of the present invention.

[0029] Figure 8 This is a drawing of the magnetic powder brake bracket part of the present invention.

[0030] In the attached diagram, the following are the reference numerals: 1. L-shaped base; 2. Variable frequency motor; 3. Motor bracket; 4. Coupling; 5. Rotating shaft; 6. Bearing seat; 7. Lateral movement device; 8. Disc; 9. Sliding key; 10. Sensor bracket; 11. Magnetic powder brake; 12. Magnetic powder brake bracket; 13. Magnetic powder tension controller; 14. Computer; 15. Information acquisition unit; 16. Signal conditioner; 17. Variable frequency drive; 18. Inductive sensor; 19. T-shaped slider; 20. Mass block; 61. Deep groove ball bearing; 62. Bearing sleeve; 63. Sleeve; 71. Lower lateral movement device; 711. T-slot rectangular block; 712. Rack; 72. Upper lateral movement device; 721. Rectangular block; 722. Short shaft; 723. Circular knob; 724. Gear; 725. Axial retaining ring. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, while the terms "bottom" and "top," "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0032] Example: Please refer to Figures 1-3 The present invention adopts the following technical solution: a vertical double-disc rotor vibration test bench with adjustable multiple vibration factors, characterized in that it includes: an L-shaped base 1, a variable frequency motor 2, a motor bracket 3, a coupling 4, a rotating shaft 5, a bearing seat 6, a transverse moving device 7, a disc 8, a sliding key 9, a sensor bracket 10, a magnetic powder brake 11, a magnetic powder brake bracket 12, a magnetic powder tension controller 13, a computer 14, an information acquisition device 15, a signal conditioner 16, a frequency converter 17, an inductive sensor 18, a T-shaped slider 19, and a mass block 20; the L-shaped base 1 is divided into an upper base and a lower base. The surface of the upper base has two T-shaped grooves and several through holes. A triangular bracket is welded to each of the left and right ends of the surfaces of the upper and lower bases to fix the upper and lower bases. The lower base has several corresponding through holes.

[0033] The variable frequency motor 2 is placed on the upper surface of the L-shaped base 1. A motor bracket 3 for fixing the motor is located at the front end of the motor 2. The bottom of the motor bracket 3 has four bolt holes, and the front of the bracket 3 has four through holes. The through holes at the front of the motor bracket 3 are connected to the front end of the variable frequency motor 2 with screws, and the lower end of the motor bracket 3 is connected to the through holes of the upper base with bolts. The rear end of the variable frequency motor 2 is connected to the frequency converter 17. The frequency converter 17 is equipped with switches for controlling the speed of the variable frequency motor 2, emergency stop, and movement. The frequency converter 17 facilitates the control of the motor speed and the recording of speed data.

[0034] Example: Please refer to Figure 7 The sensor bracket 10 has a slider at its lower end, with through holes at both ends. The slider is connected to the T-slot on the right side of the upper base surface by screws. The upper end of the slider is a rectangular block with a through hole at the same height as the rotating shaft 5. A rectangular plate with a through hole is horizontally connected above the rectangular block. The sensor bracket can move with the disk, facilitating the recording of displacement data of the two disks in the X and Y directions, and obtaining the vibration characteristics of the two disks.

[0035] The rotating shaft 5 has a keyway in the middle and a coupling 4 at the front end. The coupling 4 has set screw holes at both ends, which can be used to connect the extension shaft of the variable frequency motor (2) to the rotating shaft (5). The rotating shaft 5 is fixed with a bearing seat 6, a disc 8, a keyway 9, and a magnetic powder brake 11.

[0036] Example: Please refer to Figure 3 The bearing housing 6 has a deep groove ball bearing 61 in the middle, and a bearing sleeve 62 in the middle of the bearing. The bearing sleeve 62 fastens the deep groove ball bearing 61. The bearing sleeve 62 has a sleeve 63 in the middle, and the sleeve 63 has a groove in the middle. The groove is used as a shoulder to fix the bearing sleeve 62 at both ends. The sleeve 63 has two screw holes, and the sleeve 63 is fixed to the rotating shaft 5 with screws.

[0037] Example: Please refer to Figure 4A lateral moving device 7 is placed at the lower end of the bearing seat 6. Two screw holes are opened at the bottom of the bearing seat 6, and the lower end of the bearing seat is connected to the lateral moving device with screws. The lateral moving device 7 is divided into upper and lower parts. The bottom end of the lower lateral moving device 71 is connected to a T-shaped slider 19 with screws. The T-shaped slider 19 has through holes at both ends and is fixed to the left side of the upper base in a T-shaped groove with screws. The lower lateral moving device 71 has a T-groove rectangular block 711. A rack 712 is provided at the front end of the T-groove rectangular block 711, and a scale is provided at the rear end of the T-groove rectangular block 711. The rack has two holes on its surface and is fixed to the front end of the T-groove rectangular block 711 with screws. The upper lateral moving device 72 has a T-shaped platform at its lower end, which engages with the T-slot of the lower lateral moving device for lateral movement. The rectangular block 721 has a through hole in the middle, and a short shaft 722 is fitted into the center of this hole. The short shaft 722 has a shoulder at the front end of the rectangular block 721 and a groove on the shaft, on which an axial retaining ring 725 is installed. A circular knob 723 is located at the rear end of the rectangular block 721. A gear 724 is mounted on the front end of the short shaft 722 on the front end of the rectangular block 721. The front end of the gear 724 is fixed by the shoulder of the short shaft 722, and the rear end is fixed by a screw through a perforated sleeve. The lateral moving device 722 allows for precise control of the gear and rack meshing, and the lower scale allows for precise lateral movement of the bearing seat 6, preventing misalignment of the rotating shaft 5.

[0038] Please see Figures 5-6 The disk 8 and the sliding key 9 are connected by screws. The disk 8 has three through holes and three side through holes. The large through hole can hold a mass block 20, and the hole can be used to fix the mass block 20 with screws. The disk 8 has a sliding keyway in the middle. The sliding key 9 is placed between the disk 8 and the rotating shaft 5. The sliding key 9 has a screw hole at its bottom and is fixed to the disk 8 with screws. The sliding key 8 has a through hole at the rear of the disk 8, which is connected to the rotating shaft 5 with screws. In one possible technical solution, the large through hole on the disk 8 can be used to place a mass block or a small ball, so that the disk 8 generates an eccentric mass, thereby controlling the magnitude and direction of the unbalanced mass.

[0039] Example: Please refer to Figure 8 The magnetic powder brake 11 has an extension shaft at its front end, which is fixed to the rotating shaft 5 at both ends of the coupling 4 with set screws. The rear end of the magnetic powder brake 11 is connected to the magnetic powder tension controller 13. The magnetic powder tension controller 13 is equipped with a tension adjustment knob and a start / stop switch. The upper end of the magnetic powder brake 11 is fitted with a magnetic powder brake bracket 12, which is connected to it with screws. The upper end of the magnetic powder brake bracket 12 has through holes that are connected to the magnetic powder brake 11 with screws, and the lower end of the magnetic powder brake bracket 12 has two through holes that are bolted to the corresponding through holes of the upper base.

[0040] The signal conditioner 16 is connected to the inductive sensor 18, the information collector 15 is connected to the signal conditioner 16, and the computer 14 is connected to the information collector 15. The inductive sensor 18 is placed on the sensor bracket 10 and connected to the sensor bracket 10 via a threaded nut.

[0041] The inductive sensor 18 collects the displacement of the disk 8 in the X and Y directions. The signal is amplified, sorted, and processed by the signal conditioner 16. The data is then transmitted to the computer 14 by the information acquisition unit 15. Finally, the vibration characteristics of the disk 8 are obtained by software analysis and processing.

[0042] This invention provides a vertical dual-disc rotor vibration test bench with adjustable vibration factors. A variable frequency motor 2, bearing housing 6, disc 8, sliding key 9, and magnetic powder brake 11 are connected via a rotating shaft 5. The shaft 5 can be misaligned by changing the displacement of the lateral movement device 7, or the magnitude and direction of the unbalanced mass can be adjusted by adding or removing eccentric mass blocks on the disc 8. The load force applied by the magnetic powder brake 11 can also be adjusted via a magnetic powder tension controller 13. Under these vibration excitations, the displacement of the disc 8 in the X and Y directions is recorded by an inductive sensor 18 to calculate and analyze the vibration changes of the disc 8. This test bench can conduct multi-condition experiments under various vibration factors to verify the accuracy of theoretical analysis or provide a reference for reducing the vibration of actual mechanical equipment.

[0043] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0044] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

Claims

1. A vertical double-disc rotor vibration test bench with adjustable multiple vibration factors, characterized in that, include: L-shaped base (1), variable frequency motor (2), motor bracket (3), coupling (4), rotating shaft (5), bearing seat (6), lateral movement device (7), disc (8), sliding key (9), sensor bracket (10), magnetic powder brake (11), magnetic powder brake bracket (12), magnetic powder tension controller (13), computer (14), information acquisition unit (15), signal conditioner (16), frequency converter (17), inductive sensor (18), T-shaped slider (19), mass block (20); The L-shaped base (1) is divided into an upper base and a lower base. The upper base has two T-shaped grooves and several through holes. A triangular bracket is welded to each of the left and right ends of the upper and lower bases to fix the upper and lower bases. The lower base has several corresponding through holes. The variable frequency motor (2) is installed on the upper base surface of the L-shaped base (1). The front end of the variable frequency motor (2) is provided with a motor bracket (3) for fixing the motor. The rear end of the variable frequency motor (2) is connected to the frequency converter (17). The bottom of the motor bracket (3) is provided with four bolt holes. The front end of the motor bracket (3) is provided with four through holes. The through holes in the front end of the motor bracket (3) are connected to the front end of the variable frequency motor (2) by screws. The lower end of the motor bracket (3) is connected to the through holes of the upper base by bolts. The frequency converter (17) is provided with a switch for controlling the speed, emergency stop and movement of the variable frequency motor (2). The rotating shaft (5) is provided with a sliding keyway in the middle, and a coupling (4) is installed at the front end of the rotating shaft (5). The coupling (4) is provided with set screw holes at both ends. The variable frequency motor (2) extension shaft is connected to the rotating shaft (5) through the set screw. The rotating shaft (5) is installed with a bearing seat (6), a disc (8), a sliding key (9) and a magnetic powder brake (11) in sequence. The bearing housing (6) is provided with a deep groove ball bearing (61) in the middle, and a bearing sleeve (62) is provided in the middle of the bearing. The bearing sleeve (62) fastens the deep groove ball bearing (61). A sleeve (63) is provided in the middle of the bearing sleeve (62). A groove is provided in the middle of the sleeve (63). The groove is used as a shoulder to fix the bearing sleeve (62) at both ends. The sleeve (63) is provided with two screw holes. The sleeve (63) is fixed to the rotating shaft (5) with screws. The lower end of the bearing seat (6) is equipped with a transverse moving device (7). Two screw holes are opened at the bottom of the bearing seat (6) to fix it above the transverse moving device (7). The transverse moving device (7) is divided into two parts: a lower transverse moving device (71) and an upper transverse moving device (72). The bottom end of the lower transverse moving device (71) is connected to the T-shaped slider (19) with screws. The T-shaped slider (19) has through holes at both ends and is fixed in the T-shaped groove on the left side of the upper base with screws. The lower transverse moving device (71) is equipped with a T-groove rectangular block (711). A rack (712) is provided at the front end of the T-groove rectangular block (711), and a scale is provided at the rear end of the T-groove rectangular block (711). The rack (712) has two holes on its surface and is fixed in the T-groove with screws. The rectangular block (711) has a T-shaped platform at the lower end of the rectangular block (721) of the upper transverse moving device (72), which cooperates with the T-shaped groove of the lower transverse moving device (71) to move laterally. The rectangular block (721) has a through hole in the middle for mounting a short shaft (722). The short shaft (722) has a shoulder at the front end of the rectangular block (721) and a groove is provided on the short shaft (722) and an axial retaining ring (725) is installed in the groove. The rectangular block (721) has a circular knob (723) at the rear end. A gear (724) is installed on the front end of the rectangular block (721) of the short shaft (722). The front end of the gear (724) is fixed by the shoulder of the short shaft (722), and the rear end is fixed by a screw through a sleeve with a hole. The disc (8) and the slide key (9) are connected by screws. The disc (8) has three through holes and three side through holes. The through holes are used to insert the mass block (20) and fix it with screws. The disc (8) has a slide key groove in the middle. The slide key (9) is placed between the disc (8) and the rotating shaft (5). The slide key (9) has a through hole below it. The slide key (9) is connected to the disc (8) with screws. The slide key (9) has a through hole behind the disc (8) and is connected to the rotating shaft (5) with screws.

2. The vertical double-disc rotor vibration test bench with adjustable multiple vibration factors according to claim 1, characterized in that: The sensor bracket (10) has a slider at its lower end. The slider is connected to the T-slot on the right side of the upper base surface by screws. The sensor bracket (10) has a through hole at the same height as the rotating shaft (5). A rectangular plate is connected horizontally above it. A through hole is provided on the rectangular plate.

3. The vertical double-disc rotor vibration test bench with adjustable multiple vibration factors according to claim 1, characterized in that: The front end of the magnetic powder brake (11) extends through a coupling (4) and is connected to a rotating shaft (5). The magnetic powder brake (11) is connected to a magnetic powder tension controller (13). The magnetic powder tension controller (13) is equipped with a knob for adjusting the tension and a start / stop switch. The upper end of the magnetic powder brake bracket (12) has through holes. The magnetic powder brake (11) and the magnetic powder brake bracket (12) are connected by screws. The lower end of the magnetic powder brake bracket (12) has two through holes, which are connected to the corresponding through holes of the upper base by bolts.

4. The vertical double-disc rotor vibration test bench with adjustable multiple vibration factors according to claim 1, characterized in that: The signal conditioner (16) is connected to the inductor sensor (18), the information collector (15) is connected to the signal conditioner (16), the computer (14) is connected to the information collector (15), the inductor sensor (18) is placed on the sensor bracket (10), and is connected to the sensor bracket (10) through the threaded nut of the inductor sensor (18).

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