Visual (music or melody) rhythm display panel for rhythm control in aerobics primary course

Abstract

The invention relates to the technical field of aerobics teaching equipment, in particular to a visual (music or melody) rhythm display panel for rhythm control in aerobics primary courses, which comprises a display panel, a rhythm indication module, an action guide component, a feedback acquisition device and an angle adjusting mechanism. The beat indicating module displays beat intensity through the light-emitting unit, the action guiding assembly dynamically prompts action types, the feedback collecting device analyzes action deviation of students in real time and generates feedback information, and the angle adjusting mechanism adapts to different watching requirements. According to the invention, music rhythm and action coordination can be combined, students can be helped to rapidly master synchronism, and teaching efficiency and user experience are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of physical education teaching and music auxiliary equipment, and specifically is a visualized (music or rhythm) beat display board used for rhythm control in elementary aerobics courses. Background Art

[0002] With the continuous development of music visualization technology, beat display and rhythm control are increasingly used in music education, fitness training and other fields. Especially in elementary aerobics courses, students need to master the coordination between movements and music through clear rhythm cues, which puts high demands on the intuitiveness and real-time feedback capabilities of teaching tools. However, existing beat display technologies are mostly focused on music playback or professional music score generation scenarios, and their applicability in specific teaching environments has certain limitations.

[0003] After searching, it was found that the patent with publication number CN105513583B discloses a method and system for displaying the rhythm of a song, which collects the frequency amplitude and beat value of the audio data, and determines the display speed of the audio amplitude in combination with the beat value, thereby realizing the visual display of the music rhythm. However, this technical solution is mainly designed for the visual enjoyment of the audience, and fails to fully consider the demand for rhythm control in teaching scenarios. For example, it lacks the action prompt function for beginners, and the display method is relatively abstract, which makes it difficult to meet the requirements for intuitiveness and comprehensibility in aerobics courses.

[0004] In addition, the patent with publication number CN115220625B discloses an audio playback method and device, which uses a moving object to represent the rhythm information of the audio, and allows the user to adjust the display status of the moving object through interactive instructions, thereby enhancing interactivity. However, this solution focuses more on the user experience in entertainment scenarios and is not optimized for the teaching characteristics of elementary aerobics courses. For example, the design of its moving objects may be more complex and difficult to directly map to specific movement rhythm prompts. At the same time, the real-time feedback mechanism for the synchronization of student movements and music is insufficient.

[0005] The above problems show that there is still room for improvement in the applicability, intuitiveness and real-time feedback capability of the existing beat display technology in teaching scenarios. Therefore, there is an urgent need for a rhythm control tool that can adapt to the needs of elementary aerobics courses, which can help students quickly master the rhythm of movements and improve teaching effects through a concise and intuitive display method, targeted action prompts and real-time feedback functions. The present invention is based on this demand and proposes a visual (music or rhythm) beat display board for rhythm control in elementary aerobics courses, which aims to solve the problems existing in the prior art and meet the actual needs of efficient rhythm control tools. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies existing in the prior art and provide a visual (music or pitch) beat display board for rhythm control in the primary aerobics course. Through intuitive beat prompts and a real-time feedback mechanism in the teaching scenario, the music rhythm is combined with the movement coordination to help trainees quickly master the synchronization between movements and music and improve the teaching efficiency.

[0007] To achieve the above object, the present invention provides the following technical solutions: A visual (music or pitch) beat display board for rhythm control in the primary aerobics course, including a display panel. The front of the display panel is a rectangular planar structure, and a support frame is fixedly installed on the back of the display panel. It further includes:

[0008] A beat indication module, which is embedded in the central area of the front of the display panel. The beat indication module is composed of several independently lit light-emitting units, and each light-emitting unit is connected to the main control circuit through a wire;

[0009] An action guidance component, which is arranged at the top of the display panel. The action guidance component is used to generate a dynamic action prompt signal according to the audio signal;

[0010] A feedback acquisition device, which is arranged on the side of the display panel. The feedback acquisition device is used to obtain the action information of the trainees in real time and perform synchronous processing;

[0011] An angle adjustment mechanism, which is arranged at the bottom of the display panel. The angle adjustment mechanism is used to adjust the tilt angle of the display panel to adapt to different teaching environments.

[0012] A data processing unit is provided inside the display panel. The data processing unit analyzes and processes the input audio signal through an algorithm and calculates the beat intensity and time interval according to the formula as follows:

[0013]

[0014] Among them, I(t) represents the beat intensity at the current moment t, A i represents the amplitude of the i-th beat point, t i represents the time of the i-th beat point, k is the attenuation coefficient, and T is the sampling period. This formula can capture the beat changes in the audio and map them to the lighting mode of the light-emitting units, thereby realizing the visual display of the beats.

[0015] The action guiding component includes: an action slider which is horizontally slidably arranged on the top of the display panel. Multiple transparent windows are provided on the surface of the action slider, and each window is embedded with a color marking block. The color of the color marking block is associated with the corresponding aerobics action type; a driving motor which is fixedly installed inside the display panel. The output shaft of the driving motor is meshed and driven with the action slider through a gear set, and the driving motor controls the moving speed and direction of the action slider according to the instructions of the data processing unit.

[0016] The feedback acquisition device includes: an image acquisition module which is installed on the side of the display panel and is used to capture the action images of the trainees; a data processing module which is electrically connected to the image acquisition module. The data processing module calculates the action deviation value and generates feedback information by comparing the trainees' actions with the standard action model; a display module which is embedded on the side of the display panel and is used to present the feedback information in real time.

[0017] The angle adjustment mechanism includes: a base which is fixedly installed at the bottom of the display panel, and an arc-shaped sliding rail is provided inside the base; an adjustment rod, one end of which is hinged to the back of the display panel and the other end is slidably arranged in the arc-shaped sliding rail; a locking knob which is threadedly connected to the surface of the adjustment rod and is used to fix the position of the adjustment rod. By rotating the adjustment rod, the tilt angle of the display panel can be changed to meet the viewing needs of trainees at different heights.

[0018] As a preferred technical solution of the present invention, an auxiliary support component is provided on the bottom side of the display panel. The auxiliary support component includes a mounting bracket fixed to the bottom side of the display panel, and the mounting bracket is hinged to the display panel through a pin shaft.

[0019] Among them, one end of the reinforcing rope on the roller passes under the display panel.

[0020] As a preferred technical solution of the present invention, several stacked fixed brackets are fixed to the bottom side of the display panel, and the through holes of the fixed brackets are arranged corresponding to the openings on the bottom side of the display panel.

[0021] As a preferred technical solution of the present invention, an opening is provided on one of the support frames, and the opening is higher than the action slider and the driving motor.

[0022] As a preferred technical solution of the present invention, a storage box is installed at the position of the support frame corresponding to the opening. The storage box includes a box body fixed to the support frame. Both the top side and the bottom side of the box body are provided with openings. A rotatable and openable baffle is installed on the bottom opening of the box body. An elastic element is installed on the support frame to make the baffle buckle on the bottom opening of the box body. The opening is located above the top opening of the box body. A first magnet is fixed to the bottom of the outside of the box body, and a second magnet is fixed to the baffle corresponding to the position of the first magnet.

[0023] As a preferred technical solution of the present invention, it further includes a compaction assembly. The compaction assembly includes a pressing wheel, and support rods are rotatably installed at both ends of the pressing wheel. The support rods are rotatably connected to the support frame.

[0024] As a preferred technical solution of the present invention, a coaxial annular plate is rotatably installed at the end of the pressing wheel, and a coaxial annular fixing frame is fixedly installed at the end of the pressing wheel. A plurality of insertion rods moving radially of the pressing wheel are slidably installed on the annular fixing frame. One side of the insertion rod is rotatably connected to one end of a connecting rod, and the other end of the connecting rod is rotatably connected to the side of the annular plate. A positioning bolt is installed on the annular plate.

[0025] Among them, by rotating the annular plate, the annular plate drives the insertion rod to extend or retract from the end face of the pressing wheel through the connecting rod.

[0026] As a preferred technical solution of the present invention, the difference in height between the lowest point on the bottom side of the display panel and the lowest point on the bottom side of the display panel is 5.0 - 20.0 cm.

[0027] As a preferred technical solution of the present invention, the display panel is an arc-shaped plate, and the central axis of the arc-shaped plate coincides with the central axis of the action slider.

[0028] As a preferred technical solution of the present invention, the top sides of both support frames are fixedly connected to the top plate.

[0029] Through the design of the beat indication module and the action guiding component, the present invention can convert the audio signal into an intuitive visual signal and display it through the lighting unit and the action slider, enabling the trainee to quickly understand the correspondence between the music rhythm and the action, and significantly improving the learning efficiency.

[0030] In addition, through the design of the feedback acquisition device and the angle adjustment mechanism, the feedback acquisition device of the present invention can real-time obtain the trainee's action information and compare it with the standard action model to generate accurate feedback information to help the trainee correct the action deviation in time; at the same time, the angle adjustment mechanism can flexibly adjust the tilt angle of the display panel according to the teaching needs to ensure that each trainee can obtain the best viewing experience, thereby improving the teaching effect and user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0032] Figure 2 It is a schematic diagram of the structure of the feedback acquisition device of the present invention

[0033] Figure 3 It is a schematic diagram of the structure of the compaction assembly of the present invention.

[0034] Figure 4This is a schematic structural diagram of the action slider of the present invention.

[0035] Figure 5 This is a schematic diagram of the auxiliary support component of the present invention

[0036] Figure 6 This is a schematic structural diagram of the storage box of the present invention.

[0037] The reference signs are as follows:

[0038] 1. Display panel; 2. Beat indication module; 3. Action guiding component; 4. Feedback acquisition device; 5. Angle adjustment mechanism; 6. Action slider; 7. Driving motor; 8. Image acquisition module; 9. Display module; 10. Base; 11. Adjusting rod; 12. Locking knob; 13. Auxiliary support component; 14. Storage box; 15. Compacting component. Detailed implementation manners

[0039] The present invention provides a visual beat display board for rhythm control in a primary aerobics course, and its detailed implementation manners are described in detail in conjunction with the accompanying drawings. As Figures 1 to 6 shown, the overall structure includes a display panel 1, a beat indication module 2, an action guiding component 3, a feedback acquisition device 4, and an angle adjustment mechanism 5. Each part realizes precise control of the music rhythm and the coordination of the students' actions through reasonable layout and connection relationships.

[0040] The display panel 1 is a rectangular planar structure, and a beat indication module 2 is embedded in the central area of its front surface. The module is composed of a number of independently lit light-emitting units, and each light-emitting unit is connected to the main control circuit through a wire. The light-emitting units are arranged in a matrix form, and their lighting modes are determined by the data processing unit according to the analysis results of the input audio signal. As Figure 1 shown, the beat indication module 2 is located at the center of the display panel 1, facilitating students to clearly observe the beat changes from different perspectives. A support frame is fixedly installed on the back of the display panel 1, which is used to enhance the stability of the overall structure and provide an installation space for internal components. An opening is provided on one of the support frames, and the opening is higher than the positions of the action slider 6 and the driving motor 7, which is convenient for maintenance and operation.

[0041] The action guiding component 3 is arranged at the top of the display panel 1, and its core components are the action slider 6 and the driving motor 7. As Figure 4As shown, the action slider 6 is horizontally slidably arranged at the top of the display panel 1. Multiple transparent windows are provided on its surface, and each window is embedded with a color marking block. The color of the color marking block is associated with the corresponding aerobics action type. The driving motor 7 is fixedly installed inside the display panel 1, and its output shaft is in meshing transmission with the action slider 6 through a gear set, so as to realize the movement of the action slider 6. The driving motor 7 adjusts the moving speed and direction of the action slider 6 according to the instructions of the data processing unit, so that the color marking blocks on the slider change synchronously with the music rhythm. The moving track of the action slider 6 is defined by the guiding groove at the top of the display panel 1, ensuring that the slider runs smoothly and does not deviate from the predetermined path.

[0042] The feedback acquisition device 4 is arranged on the side of the display panel 1, and its main components include an image acquisition module 8, a data processing module and a display module 9. As Figure 3 shown, the image acquisition module 8 is installed on the side of the display panel 1 for capturing the action images of the trainees. The data processing module is electrically connected to the image acquisition module 8. After receiving the captured image data, it compares and calculates the data with the standard action model, generates an action deviation value and converts it into feedback information. The display module 9 is embedded in the side of the display panel 1 for presenting the feedback information in real time to help the trainees correct the action deviation in time. The lens angle of the image acquisition module 8 can be finely adjusted through a manual adjustment device to meet the shooting requirements of trainees of different heights.

[0043] The angle adjustment mechanism 5 is arranged at the bottom of the display panel 1, and its structure includes a base 10, an adjustment rod 11 and a locking knob 12. As Figure 2 shown, the base 10 is fixedly installed at the bottom of the display panel 1, and an arc-shaped sliding rail is provided inside. One end of the adjustment rod 11 is hinged to the back of the display panel 1, and the other end is slidably arranged in the arc-shaped sliding rail. By rotating the adjustment rod 11, the tilt angle of the display panel 1 can be changed, so as to meet the viewing requirements of trainees of different heights. The locking knob 12 is threadedly connected to the surface of the adjustment rod 11 for fixing the position of the adjustment rod 11 to ensure that the display panel 1 remains stable after the angle is adjusted. The design of the angle adjustment mechanism 5 enables the display panel 1 to be flexibly adjusted within a large range to adapt to different teaching environments.

[0044] The auxiliary support assembly 13 is arranged on the bottom side of the display panel 1, and its structure includes a mounting bracket fixed on the bottom side of the display panel 1. The mounting bracket is hinged to the display panel 1 through a pin shaft.

[0045] The storage box 14 is installed at the position corresponding to the opening of the support frame. Its structure includes a box body fixed to the support frame. Both the top side and the bottom side of the box body are provided with openings. A baffle that rotates to open and close is installed on the bottom opening of the box body. An elastic element is installed on the support frame to make the baffle snap onto the bottom opening of the box body. The opening is located above the top opening of the box body. A first magnet is fixed to the bottom of the outer side of the box body, and a second magnet is fixed to the position of the baffle corresponding to the first magnet. As Figure 6 shown, when items need to be stored or retrieved, the user only needs to gently pull the baffle, and the elastic element will automatically bounce the baffle open. At the same time, the interaction between the first magnet and the second magnet ensures that the baffle fits tightly when closed, preventing dust or other sundries from entering the interior of the box body.

[0046] The compaction assembly 15 is arranged on the support frame, and its core component is a pressing wheel. Support rods are rotatably installed at both ends of the pressing wheel, and the support rods are rotatably connected to the support frame. A coaxial annular plate is rotatably installed at the end of the pressing wheel, and a coaxial annular fixing frame is fixedly installed at the end of the pressing wheel. A number of insertion rods that move radially along the pressing wheel are slidably installed on the annular fixing frame. One side of the insertion rod is rotatably connected to one end of a connecting rod, and the other end of the connecting rod is rotatably connected to the side of the annular plate. A positioning bolt is installed on the annular plate. As Figure 6 shown, by rotating the annular plate, the annular plate drives the insertion rod to extend or retract from the end face of the pressing wheel through the connecting rod, thereby realizing the further fixation and compaction of the display panel 1, ensuring that the display panel 1 remains flat during use.

[0047] A number of stacked fixing brackets are fixed to the bottom side of the display panel 1, and the through holes of the fixing brackets are arranged corresponding to the openings at the bottom side of the display panel 1. This design not only enhances the overall strength of the display panel 1 but also facilitates stacking operations during transportation or storage. The difference in height between the lowest point and the highest point of the bottom side of the display panel 1 is 5.0 - 20.0 cm. This design ensures that the display panel 1 can still maintain a good visual effect in an inclined state. In addition, the display panel 1 is an arc-shaped plate, and the central axis of the arc-shaped plate coincides with the central axis of the action slider 6, further improving the comfort of trainees when viewing from different positions.

[0048] The top sides of both support frames are fixedly connected to the top plate. The design of the top plate not only enhances the stability of the overall structure but also provides convenience for the installation of other components. A data processing unit is provided inside the display panel 1. The data processing unit analyzes and processes the input audio signal through an algorithm and calculates the beat intensity and time interval according to a formula. The parameters in the formula include the beat intensity at the current moment t, the amplitude of the i-th beat point, the time of the i-th beat point, the attenuation coefficient k, and the sampling period T. The data processing unit maps the calculation result to the lighting unit lighting mode of the beat indication module 2, thereby realizing the visual display of the beat.

[0049] In this embodiment, the connection relationships between all components are optimized to ensure a compact overall structure and perfect functions. For example, the driving motor 7 is in meshing transmission with the action slider 6 through a gear set, ensuring the movement accuracy of the action slider 6; data transmission between the image acquisition module 8 and the display module 9 is achieved through the data processing module to ensure that feedback information can be presented in real time; the adjusting rod 11 cooperates with the arc-shaped slide rail in the base 10 to achieve flexible adjustment of the angle of the display panel 1. The cooperation relationships between the components have been verified through multiple tests to ensure stable operation and achieve the expected effects in practical applications.

[0050] The specific implementation manner of the present invention fully discloses all details of the technical solution to ensure that those skilled in the art can implement the technology according to the content of the specification. Through the design of the above structure and connection relationships, the present invention can effectively solve the problems existing in the prior art and significantly improve the efficiency of aerobics teaching and the learning experience of students.

[0051] In order to enable relevant personnel in the technical field to better understand and implement the present invention, the following supplements the description of the specific implementation principle of the present invention in combination with a specific application scenario.

[0052] In the teaching scenario of the beginner aerobics course, first place the visual rhythm display board in front of the teaching venue to ensure that all students can clearly observe the content of the display panel 1. Adjust the tilt angle of the display panel 1 through the angle adjustment mechanism 5 to meet the viewing needs of students of different heights. During specific operation, rotate the adjusting rod 11 so that it slides along the arc-shaped slide rail in the base 10, thereby changing the tilt angle of the display panel 1. After reaching the appropriate angle, use the locking knob 12 to fix the position of the adjusting rod 11 to ensure that the display panel 1 remains stable. This step can effectively solve the problem of inconvenient viewing caused by the height difference of students and improve the overall teaching experience.

[0053] Subsequently, start the data processing unit inside the display panel 1, input the audio signal and analyze and process it. The data processing unit calculates the beat intensity and time interval according to a formula, and the parameters in the formula include the beat intensity at the current moment t, the amplitude of the i-th beat point, the time of the i-th beat point, the attenuation coefficient k, and the sampling period T. The result processed by the algorithm is mapped to the lighting unit lighting mode of the beat indication module 2, thereby realizing the visual display of the music rhythm. For example, during the music playback, the lighting units are lit in sequence according to the strength and frequency of the beats, forming a dynamic visual prompt effect. This intuitive beat display method can help students quickly perceive the changes in the music rhythm and lay a foundation for subsequent movement coordination training.

[0054] Meanwhile, the motion guidance component 3 starts to operate. The drive motor 7 receives instructions from the data processing unit and drives the motion slider 6 to move horizontally through the gear set. Color-coded marker blocks are embedded in the transparent window on the surface of the motion slider 6, and the colors of these marker blocks are associated with the corresponding aerobics action types. For example, the red marker block represents jumping actions, and the blue marker block represents stretching actions. The moving speed and direction of the motion slider 6 change synchronously with the music rhythm, and trainees can grasp the current action type to be performed in real time according to the color-coded marker blocks on the slider. This design not only enhances the intuitiveness of action prompts but also significantly reduces the learning difficulty for beginners.

[0055] During the process of trainees practicing following the music rhythm and action prompts, the feedback acquisition device 4 captures the action images of trainees in real time. The image acquisition module 8 is installed on the side of the display panel 1, and its lens angle can be fine-tuned according to the height of the trainees to ensure that the shooting range covers all trainees. The captured image data is transmitted to the data processing module, which compares and calculates the trainees' actions with the standard action model, generates an action deviation value, and converts it into feedback information. This feedback information is presented in real time through the display module 9 to help trainees correct action deviations in a timely manner. For example, when there is a large deviation between a trainee's action and the standard model, the display module 9 will mark the deviation part with a prominent color or prompt text to guide the trainee to adjust the posture. This real-time feedback mechanism can significantly improve the action accuracy of trainees and shorten the learning cycle.

[0056] In addition, during teaching breaks or equipment maintenance, the design of the storage box 14 provides convenience for storing and retrieving items. The user only needs to gently pull the baffle, and the elastic element will automatically push the baffle open. At the same time, the interaction between the first magnet and the second magnet ensures that the baffle fits tightly when closed, preventing dust or other debris from entering the interior of the box. This structural design not only ensures the functionality of the storage box 14 but also improves the overall aesthetics of the equipment.

[0057] The compaction component 15 further ensures the flatness of the display panel 1 during use. By rotating the annular plate, the annular plate drives the insertion rod to extend or retract the end face of the pressure wheel through the connecting rod, thereby applying an appropriate compaction effect on the display panel 1. This design effectively prevents the display panel 1 from bending or deforming during long-term use, ensuring that it always maintains a good visual effect.

[0058] In summary, through the coordinated cooperation of the above-mentioned components, the present invention achieves precise control of the coordination between music rhythm and movements. From the dynamic lighting of the beat indication module 2 to the real-time prompt of the movement guidance component 3, and then to the deviation correction function of the feedback acquisition device 4, each step is carefully designed to ensure that the device can operate stably in practical applications and achieve the expected effect. Through this series of technical means, the present invention significantly improves the teaching efficiency of the primary aerobics course and the learning experience of students, providing a new solution for the application of music visualization technology in the teaching field.

Claims

1. A visual beat display board for rhythm control in a beginner's aerobics course, characterized in that: It includes a display panel (1), a beat indication module (2), an action guidance component (3), a feedback acquisition device (4), and an angle adjustment mechanism (5). The display panel (1) is a rectangular planar structure, and the beat indication module (2) is embedded in the central area of its front surface. The beat indication module (2) consists of several independently lit light-emitting units, and each light-emitting unit is connected to the main control circuit through a wire; the action guidance component (3) is arranged on the top of the display panel (1) and is used to generate a dynamic action prompt signal according to the audio signal; the feedback acquisition device (4) is arranged on the side of the display panel (1) and is used to obtain the action information of the trainee in real time and perform synchronous processing; the angle adjustment mechanism (5) is arranged on the bottom of the display panel (1) and is used to adjust the tilt angle of the display panel (1) to adapt to different teaching environments.

2. The beat display board according to claim 1, wherein: The action guidance component (3) includes an action slider (6) and a driving motor (7). The action slider (6) is horizontally slidably arranged on the top of the display panel (1), and a plurality of transparent windows are arranged on its surface. Each window is embedded with a color marking block. The driving motor (7) is fixedly installed inside the display panel (1), and its output shaft is meshed and driven with the action slider (6) through a gear set.

3. The beat display board according to claim 1, characterized in that: The feedback acquisition device (4) includes an image acquisition module (8), a data processing module, and a display module (9). The image acquisition module (8) is installed on the side of the display panel (1) and is used to capture the action images of the trainee. The data processing module is electrically connected to the image acquisition module (8) and is used to compare the trainee's actions with the standard action model and generate feedback information. The display module (9) is embedded on the side of the display panel (1) and is used to present the feedback information in real time.

4. The beat display board according to claim 1, characterized in that: The angle adjustment mechanism (5) includes a base (10), an adjustment rod (11), and a locking knob (12). The base (10) is fixedly installed on the bottom of the display panel (1), and an arc-shaped slide rail is opened inside. One end of the adjustment rod (11) is hinged to the back of the display panel (1), and the other end is slidably arranged in the arc-shaped slide rail. The locking knob (12) is threadedly connected to the surface of the adjustment rod (11) and is used to fix the position of the adjustment rod (11).

5. The beat display board according to claim 1, characterized in that: It also includes an auxiliary support component (13). The auxiliary support component (13) includes a mounting bracket fixed to the bottom side of the display panel (1), and the mounting bracket is joined to the display panel through a pin shaft.

6. The beat display board according to claim 1, characterized in that: It also includes a storage box (14). The storage box (14) includes a box body fixed to the support frame. Both the top side and the bottom side of the box body are open. A rotatable and openable baffle is installed at the bottom opening of the box body. An elastic element is installed on the support frame to make the baffle buckle on the bottom opening of the box body. A first magnet is fixed to the bottom of the outside of the box body, and a second magnet is fixed to the position of the baffle corresponding to the first magnet.

7. The beat display board according to claim 1, characterized in that: It further includes a compaction assembly (15). The compaction assembly (15) includes a pressing wheel. Support rods are rotatably installed at both ends of the pressing wheel. The support rods are rotatably connected to the support frame. A coaxial annular plate is rotatably installed at the end of the pressing wheel. An annular fixed frame coaxial with the pressing wheel is fixedly installed at the end of the pressing wheel. A plurality of insertion rods that move radially along the pressing wheel are slidably installed on the annular fixed frame. One end of a connecting rod is rotatably connected to the side surface of the insertion rod, and the other end of the connecting rod is rotatably connected to the side surface of the annular plate. A positioning bolt is installed on the annular plate.

8. The beat display board according to claim 1, wherein: A plurality of stacked fixed brackets are fixed to the bottom side of the display panel (1). The through holes of the fixed brackets are arranged corresponding to the openings on the bottom side of the display panel (1).

9. The beat display board according to claim 1, wherein: The display panel (1) is an arc-shaped plate, and the central axis of the arc-shaped plate coincides with the central axis of the action slider (6).

10. The beat display board according to claim 1, characterized in that: The top sides of both support frames are fixedly connected to the top plate.

Images