Music score demonstration equipment for music teaching

Abstract

The invention relates to the technical field of educational equipment, in particular to music score demonstration equipment for music teaching, which comprises a storage box, an L-shaped supporting rod is fixedly connected to the top of the storage box, a base is fixedly connected to the side wall of the L-shaped supporting rod, a driving part is fixedly connected to the top of the base, a cam is fixedly connected to an output shaft of the driving part, and an annular groove is formed in one side wall of the cam; a cross rod is fixedly connected to the top of the L-shaped supporting rod, a first sliding block is in sliding fit with one side wall of the cross rod, a second sliding block is fixedly connected to one side wall of the first sliding block, and the second sliding block is in sliding fit with the annular groove; a fixed shaft is further fixedly connected to the top of the L-shaped supporting rod, a rotating rod is rotationally matched with the fixed shaft, a straight groove is formed in the rotating rod, and a first folding plate and a second folding plate are sequentially hinged to the end, away from the fixed shaft, of the rotating rod from top to bottom; one side wall of the first folding plate and one side wall of the second folding plate are fixedly connected with touch display screens. According to the invention, storage of musical instruments and music scores can be realized, assistance of a music teaching process can be realized, and teaching efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of educational equipment, and particularly relates to a music score demonstration device for music teaching. Background Art

[0002] With the development of multimedia technology, electronic devices are increasingly widely used in the field of teaching. In music teaching, electronic music score demonstration devices have emerged as the times require. The traditional music score demonstration method makes it difficult for students to actively participate. The new music score demonstration devices can be equipped with touch screens, and teachers can directly mark key points, add annotations, etc. on the screen. For example, when analyzing the harmonic structure of a piece of music, the teacher can circle the part of the harmonic progression on the electronic music score with a finger, which is convenient for discussion with students. At the same time, the music score can be displayed on the electronic screen, and the automatic page-turning function of the music score can be realized by using software. For example, some intelligent music score software can automatically switch pages according to the preset beat or playing progress, enabling teachers to focus more on the explanation of teaching content.

[0003] However, among the existing music score demonstration devices for music teaching, there are many inconveniences in the display function. The screens of some old demonstration devices are fixed and it is difficult to flexibly adjust according to the classroom layout and the seating distribution of students.

[0004] In summary, how to solve the problem that the existing music score demonstration devices for music teaching are difficult to flexibly adjust according to the classroom layout and the seating distribution of students has become an urgent problem to be solved in this field. Therefore, it is necessary to propose a music score demonstration device for music teaching. Summary of the Invention

[0005] To solve the above problems, the present invention provides a music score demonstration device for music teaching, which is used to realize the flexible and precise adjustment of the position and angle of the touch display screen by combining an innovative mechanical structure with an intelligent teaching system. At the same time, it can also realize the storage of musical instrument scores and the comprehensive assistance of the teaching process, so as to improve the efficiency of music teaching.

[0006] To achieve the above object, the technical solution of the present invention is as follows: A music score demonstration device for music teaching includes a storage box, a controller and an intelligent teaching system. An opening is formed on the side wall of the storage box, and box doors are symmetrically and hinged on the opening; a plurality of universal wheels are fixedly connected to the bottom of the storage box.

[0007] An L-shaped support rod is fixedly connected to the top of the storage box. A base is fixedly connected to the side wall of the L-shaped support rod. A driving member is fixedly connected to the top of the base. The output shaft of the driving member is fixedly connected to a cam. An annular groove is formed along the circumferential direction on one side wall of the cam. The controller is used to control the rotation of the output shaft of the driving member, thereby driving the cam to rotate.

[0008] The top of the L-shaped support rod is fixedly connected with a cross bar. A first slider is slidably matched horizontally on one side wall of the cross bar. A second slider is fixedly connected to one side wall of the first slider, and the second slider is slidably matched with the annular groove.

[0009] The top of the L-shaped support rod is also fixedly connected with a fixed shaft. A rotating rod is rotatably matched on the fixed shaft. A straight groove is formed on the rotating rod. A first folding plate and a second folding plate are rotatably matched in sequence from top to bottom at one end of the rotating rod away from the fixed shaft; touch display screens are fixedly connected to one side walls of the first folding plate and the second folding plate.

[0010] One end of a first connecting rod is hinged to the top of the first slider. The other end of the first connecting rod away from the first slider is hinged to a second connecting rod. The other end of the second connecting rod away from the first connecting rod is fixedly connected to the side wall of the rotating rod.

[0011] A folding assembly for folding the first folding plate and the second folding plate is provided on the L-shaped support rod.

[0012] The technical principle of the above solution is as follows:

[0013] When a teacher needs to demonstrate music scores, the storage box can be moved to a position convenient for display in the classroom through universal wheels, such as the center of the classroom. Subsequently, when the teacher needs to unfold the touch display screen, the controller is used to control the output shaft of the driving member to rotate, driving the folding assembly, and then unfolding the first folding plate and the second folding plate in the folded state. Through the touch display screen, multimedia teaching is provided for students. The teacher uses its touch interaction function to directly display electronic music scores, mark key points, add notes, and circle the key parts to be explained on the screen. When the teacher needs to demonstrate musical instruments, the musical instruments in the storage box are taken out for demonstration. When the teaching is completed, the teacher puts the musical instruments, music scores and other teaching equipment into the storage box for storage, and at the same time folds the first folding plate and the second folding plate to fold and store the touch display screen. At the same time, during teaching, the display angle of the touch display is adjusted by finely adjusting the rotation angle of the output shaft of the driving member.

[0014] The following beneficial effects are achieved by adopting the above solution:

[0015] 1. The music score demonstration device for music teaching of the present invention is equipped with a touch display screen. The teacher can make full use of its touch interaction function to directly display electronic music scores, mark key points, add notes, and circle the key parts to be explained on the screen, which is convenient for discussing with students, making abstract music knowledge intuitive and easy to understand, greatly enhancing the teaching interactivity and interest, and changing the situation of low student participation in the traditional demonstration method. At the same time, with the help of software, the function of automatic page turning of music scores is realized, and the page is automatically switched according to the preset beat or playing progress, so that the teacher can focus more on the explanation of teaching content, thus effectively improving the overall efficiency of music teaching.

[0016] 2. When the device is not in use, the first folding plate and the second folding plate can be easily folded up by operating the folding assembly to store the touch display screen, making the overall structure of the device more compact, convenient for storage and transportation, improving the space utilization and portability of the device, and meeting the use and storage requirements in different teaching scenarios.

[0017] 3. The present invention can fine-tune the angle of the touch screen to ensure that students in all positions can clearly see the content of the music score; the angle of the display screen can also be adjusted to a state where every student has a comfortable viewing experience based on the distribution of student seats in different areas, thereby avoiding affecting students' viewing effect and learning enthusiasm due to poor angles.

[0018] Furthermore, the folding component includes a positioning block, which is fixedly connected to one end of the L-shaped support rod close to the touch display screen, an arc groove is opened on the positioning block, a sliding rod is slidably matched on the arc groove, the upper part of the sliding rod is slidably matched with the straight groove, the top and bottom ends of the sliding rod are fixedly connected to the limiting block, the top of the limiting block located at the top of the sliding rod is hinged with a plurality of arc rods, and the end of the arc rod away from the limiting block is hinged with a push block, and the push block is respectively fixedly connected to the first folding plate and the second folding plate adjacent to it.

[0019] Beneficial effect: By sliding the sliding rod in the arc groove, with the help of the linkage effect of the arc rod and the push block, the folding and unfolding operations of the first folding plate and the second folding plate can be realized. The operation is simple and labor-saving, and the risk of damage to the touch display screen due to improper folding is avoided. At the same time, the device can be converted between the storage and use states more quickly, which further improves the practicality and portability of the device and meets the actual needs of frequent use and storage in music teaching.

[0020] Furthermore, a speaker is fixedly connected to the top of the storage box, and the controller is used to control the speaker to play sound.

[0021] Beneficial effects: Teachers can flexibly control the speakers through the controller to play audio related to the teaching content, such as music examples, performance demonstration audio, etc., so that students can more intuitively hear the corresponding music effects while watching the music score, enhancing their perception and understanding of music. At the same time, through the intelligent teaching system, the notes on the music score can be simulated as sound signals of different musical instruments and played through the speakers, further increasing the fun of teaching without the need to carry multiple musical instruments.

[0022] Furthermore, a microphone is fixedly connected to the top of the storage box, and the controller is used to receive sound signals sent by the microphone.

[0023] Beneficial effects: The microphone is used to receive the sound signals of musical instruments in the classroom and send the sound signals to the intelligent teaching system. The intelligent teaching system generates corresponding musical notes based on the sound signals and displays the musical notes for teaching through the touch display screen. At the same time, the microphone can also evaluate and correct the practice situation of the student by receiving the sound signals during the student's practice, so as to assist the teacher in teaching.

[0024] Furthermore, handles are fixedly connected to the side walls of the box door.

[0025] Beneficial effects: The setting of the handles can facilitate the teacher to open the storage box to store musical instruments or sheet music.

[0026] Furthermore, shock-absorbing rubber strips are fixedly connected to the frames of the touch display screens.

[0027] Beneficial effects: The shock-absorbing rubber strips can reduce the extrusion and vibration between the touch display screens when they are folded, and avoid damage to the touch display screens when they are folded.

[0028] Furthermore, the intelligent teaching system includes:

[0029] An acquisition module, which is used to acquire the sound signals emitted by musical instruments in the classroom environment by using a microphone.

[0030] An analysis module, which is used to extract key features from the sheet music and the sound signals acquired by the acquisition module by using an audio feature extraction algorithm, obtain the key features, and generate corresponding musical notes automatically and in real time based on the key features by using a standard musical note feature table.

[0031] A demonstration module, which is used to display the sheet music and the corresponding musical notes in the analysis module through the touch display screen, and automatically turn the page of the sheet music according to the preset beat and performance progress.

[0032] An interaction module, which is used to mark key points and add annotations to the sheet music by using the touch display screen.

[0033] A control module, which is used to control the rotation of the output shaft of the driving part by using a controller to adjust the position and angle of the touch display screen. Use the controller to control the speaker to play sound; it is used to receive the sound signal of the microphone and convert it into a digital signal by using a controller.

[0034] Furthermore, in the analysis module, the key features include timbre, pitch and duration.

[0035] Furthermore, the analysis module includes an error correction unit, which is used to locate the specific musical note position where the deviation occurs and generate targeted error correction prompt information when the acquired sound features deviate from the standard musical note feature table.

[0036] Further, the demonstration module includes an instrument simulation unit, which is used to simulate different instruments to play the music score and play the sound of the corresponding instrument playing the music score through a speaker.

[0037] Beneficial effects: The acquisition module of the intelligent teaching system accurately collects sound signals, providing materials for subsequent analysis; the analysis module deeply excavates sound characteristics, generates accurate notes and corrects errors, ensuring the accuracy of teaching; the demonstration module presents the music score and notes wonderfully, and the automatic page turning and instrument simulation add fun; the interaction module promotes communication between teachers and students, making the knowledge transfer smoother; the control module controls the operation of the device, realizing intelligent control. The intelligent teaching system serves music teaching in all aspects, combines with the innovative mechanical structure, and jointly creates an efficient, convenient and interesting music teaching scenario, solves the pain points of traditional teaching, and meets the needs of modern music education.

[0038] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is an axonometric view of the music score demonstration device for music teaching of the present invention.

[0040] Figure 2 is Figure 1 an enlarged view of part A in

[0041] Figure 3 is a top view of the music score demonstration device for music teaching of the present invention.

[0042] Figure 4 is a side sectional view of the music score demonstration device for music teaching of the present invention.

[0043] Reference numerals in the accompanying drawings of the specification include: 1, storage box; 2, box door; 3, universal wheel; 4, driving member; 5, cam; 6, annular groove; 7, cross bar; 8, first slider; 9, second slider; 10, fixed shaft; 11, rotating rod; 12, first folding plate; 13, second folding plate; 14, touch display screen; 15, first connecting rod; 16, second connecting rod; 17, positioning block; 18, sliding rod; 19, limiting block; 20, arc rod; 21, pushing block; 22, handle; 23, shock-absorbing rubber strip; 24, L-shaped support rod; 25, base. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0044] The following is further detailed through specific embodiments:

[0045] Embodiment 1:

[0046] As shown in the attached Figures 1 - 4As shown: A music teaching score demonstration device, including a storage box 1, a controller and an intelligent teaching system. An opening is provided on the side wall of the storage box 1, and box doors 2 are symmetrically and hinged on the opening; several universal wheels 3 are fixedly connected to the bottom of the storage box 1 by screws.

[0047] An L-shaped support rod 24 is fixedly connected to the top of the storage box 1 by screws. A base 25 is fixedly connected to the side wall of the L-shaped support rod 24 by screws. A driving member 4 is fixedly connected to the top of the base 25 by screws. The output shaft of the driving member 4 is fixedly connected to a cam 5 by screws. An annular groove 6 is provided along the circumferential direction on one side wall of the cam 5. The controller is used to control the rotation of the output shaft of the driving member 4, thereby driving the rotation of the cam 5.

[0048] A cross bar 7 is integrally formed at the top of the L-shaped support rod 24. A first slider 8 is slidably fitted horizontally on one side wall of the cross bar 7. A second slider 9 is integrally formed on one side wall of the first slider 8. The second slider 9 is slidably fitted with the annular groove 6.

[0049] A fixed shaft 10 is also integrally formed at the top of the L-shaped support rod 24. A rotating rod 11 is rotatably fitted on the fixed shaft 10. A straight groove is provided on the rotating rod 11. A first folding plate 12 and a second folding plate 13 are rotatably fitted in sequence from top to bottom at the end of the rotating rod 11 away from the fixed shaft 10; Touch display screens 14 are fixedly connected to one side walls of the first folding plate 12 and the second folding plate 13 by screws.

[0050] The top of the first slider 8 is hinged with a first connecting rod 15. One end of the first connecting rod 15 away from the first slider 8 is hinged with a second connecting rod 16. One end of the second connecting rod 16 away from the first connecting rod 15 is integrally formed with the side wall of the rotating rod 11.

[0051] A folding assembly for folding the first folding plate 12 and the second folding plate 13 is provided on the L-shaped support rod 24.

[0052] The folding assembly includes a positioning block 17. The positioning block 17 is fixedly connected to one end of the L-shaped support rod 24 close to the touch display screen 14 by screws. An arc-shaped groove is provided on the positioning block 17. A sliding rod 18 is slidably fitted on the arc-shaped groove. The upper part of the sliding rod 18 is slidably fitted with the straight groove. Limit blocks 19 are integrally formed at the top and bottom of the sliding rod 18. A plurality of arc-shaped rods 20 are hinged to the top of the limit block 19 located at the top of the sliding rod 18. Push blocks 21 are hinged to one ends of the arc-shaped rods 20 away from the limit blocks 19. The push blocks 21 are integrally formed with the adjacent first folding plate 12 and second folding plate 13 respectively.

[0053] A loudspeaker is fixedly connected to the top of the storage box 1 by screws. The controller is used to control the loudspeaker to play sound.

[0054] A microphone is also fixedly connected to the top of the storage box 1 by screws. The controller is used to receive the sound signal sent by the microphone.

[0055] The intelligent teaching system includes:

[0056] A collection module, which is used to collect the sound signals emitted by musical instruments in the classroom environment by using a microphone.

[0057] An analysis module, which is used to extract key features from the sheet music and the sound signals collected by the collection module by using an audio feature extraction algorithm, obtain the key features, and based on the key features, automatically generate corresponding musical notes in real time by using a standard musical note feature table. In the analysis module, the key features include timbre, pitch, and note length.

[0058] The analysis module includes an error correction unit, which is used to locate the specific musical note position where the deviation occurs and generate targeted error correction prompt information when the collected sound features deviate from the standard musical note feature table.

[0059] A demonstration module, which is used to display the sheet music and the corresponding musical notes in the analysis module through the touch display screen 14, and automatically turn the page of the sheet music according to the preset beat and playing progress.

[0060] The demonstration module includes an instrument simulation unit, which is used to simulate different musical instruments to play the sheet music and play the sound of the corresponding musical instrument playing the sheet music through a speaker.

[0061] An interaction module, which is used to mark key points and add annotations to the sheet music by using the touch display screen 14.

[0062] A control module, which is used to control the rotation of the output shaft of the driving part 4 by using a controller to adjust the position and angle of the touch display screen 14. Use the controller to control the speaker to play sound; it is used to receive the sound signal of the microphone by using the controller and convert it into a digital signal.

[0063] The specific implementation process is as follows:

[0064] When a music teaching activity needs to be carried out, the teacher can use the universal wheels 3 at the bottom of the storage box 1 to push the entire music teaching sheet music demonstration device to a position in the classroom that is convenient for display, such as the central area of the classroom or a suitable location selected according to the classroom layout, to ensure a position where students in each seat can easily watch.

[0065] For Figure 1For example, the teacher imports the electronic version of the sheet music to be explained into the intelligent teaching system through the demonstration module and displays the sheet music on the touch display screen 14. During the display process, the teacher directly marks the key points, adds annotations, and circles the key parts to be explained on the sheet music by using the touch function of the touch display screen 14, which facilitates discussion and interaction with students, making the abstract music knowledge more intuitive and understandable. At the same time, with the help of the automatic page-turning function of the sheet music implemented by the software, the page is automatically switched according to the preset beat or performance progress, and the teacher can focus more on the explanation of the teaching content, improving the teaching efficiency.

[0066] If audio is needed to accompany the teaching process, the teacher can control the speaker on the top of the storage box 1 through the controller to play the audio related to the teaching content, such as music examples and performance demonstration audio, etc., so that students can more intuitively hear the corresponding music effects while watching the sheet music, enhancing the perception and understanding of music. Moreover, the instrument simulation unit of the intelligent teaching system simulates different instruments to play the sheet music, and the sound of the corresponding instrument playing the sheet music is played through the speaker, further increasing the fun of teaching, and at the same time, there is no need to carry a variety of instruments to demonstrate different instrument timbres on site.

[0067] When the teacher conducts an instrument performance demonstration or the students practice playing, the microphone on the top of the storage box 1 will collect the sound signals emitted by the instrument and send them to the intelligent teaching system.

[0068] The analysis module of the intelligent teaching system will use the audio feature extraction algorithm to extract the key features from the sound signals to obtain the key features, which include timbre, pitch, and note length, and automatically generate notes in real time based on the key features, and then display the notes on the touch display screen 14 for the teacher to conduct targeted explanations.

[0069] The microphone can also receive the sound signals during the students' practice. The error correction unit of the intelligent teaching system can evaluate and correct the students' practice conditions, assisting the teacher to better carry out teaching activities, timely understand the students' learning conditions and give guidance.

[0070] Specifically, first, the error correction unit also uses the audio feature extraction algorithm to extract the key features from the sound signals emitted by the students during practice, such as pitch, note length, timbre, and rhythm, and compares and analyzes them with the standard note feature table. In this embodiment, the standard note feature table is constructed based on the standard music theory.

[0071] During the comparison process, once it is found that there are deviations between the sound signal features played by the students and the standard features, such as the pitch being too high or too low, the note length not meeting the standard beat requirements, or the rhythm being disordered, etc., the error correction unit can accurately locate the specific note positions where the differences occur and the corresponding problems.

[0072] Then, according to the difference situation, the error correction unit generates targeted error correction prompt information, which can be visually displayed to students through the touch display screen 14, clearly indicating which note, which beat or which section of the melody the student has problems in playing, and informing the correct playing method. For example, it prompts the student how much the pitch of a certain note should be raised or lowered, whether the rhythm should be accelerated or slowed down, etc.

[0073] When the teaching is completed, the teacher can open the door 2 on the storage box 1 and put the teaching aids, music scores and musical instruments into the storage box 1 for storage. At the same time, the teacher operates the controller to store the touch display screens 14 on the first folding plate 12 and the second folding plate 13.

[0074] Take Figure 1 、 Figure 2 and Figure 4 as an example. The teacher operates the controller, and the controller sends a control signal to control the output shaft of the driving member 4 to rotate. In this embodiment, the driving member 4 is a servo motor; when the output shaft of the servo motor rotates, the cam 5 can be driven to rotate synchronously at this time. Since the second slider 9 is slidably matched with the annular groove 6, and the first slider 8 is slidably matched with the cross bar 7, when the cam 5 rotates, when the convex part of the cam 5 rotates to the right, the annular groove 6 on the cam 5 can drive the first slider 8 to move to the right on the cross bar 7. On the contrary, when the convex part of the cam 5 rotates to the left, the annular groove 6 can drive the first slider 8 to move to the left on the cross bar 7.

[0075] Take Figure 1 、 Figure 2 and Figure 3 as an example. When the teacher needs to store the touch display screens 14 on the first folding plate 12 and the second folding plate 13, the controller sends a control signal to control the output shaft of the servo motor to rotate clockwise. At this time, the convex part of the cam 5 gradually points to the right, which can drive the first slider 8 to move to the right on the cross bar 7. Since the first connecting rod 15 and the second connecting rod 16 are hinged to each other, the rightward movement of the first slider 8 at this time can pull the first connecting rod 15 and then pull the second connecting rod 16, thereby driving the rotating rod 11 to rotate clockwise on the fixed shaft 10. At this time, the clockwise rotation of the rotating rod 11 can drive the sliding rod 18 to slide in the arc groove on the positioning block 17.

[0076] When the sliding rod 18 slides clockwise to the extreme end in the arc-shaped groove, under the dual limiting effect of the straight groove and the arc-shaped groove on the sliding rod 18, the sliding rod 18 can move from the right to the left in the straight groove. Since the end of the rotating rod 11 far from the fixed shaft 10 is rotatably fitted with a first folding plate 12 and a second folding plate 13 from top to bottom in sequence, at this time, the arc-shaped rod 20 hinged on the limiting block 19 can push the push block 21 and then drive the first folding plate 12 and the second folding plate 13 to gradually approach, forming a "V" shape, and finally folding together, thereby realizing the folding and storage of the touch display screen 14. At this time, the rotating rod 11 and the horizontal end of the L-shaped support rod 24 form a right angle, further reducing the floor area of the music teaching score demonstration device of the present invention. On the contrary, when the convex part of the cam 5 rotates to point to the left, at this time, the arc-shaped rod 20 can pull the first folding plate 12 and the second folding plate 13 to unfold horizontally.

[0077] The teacher can also use the controller to finely adjust the rotation angle of the output shaft of the servo motor to finely adjust the included angle between the first folding plate 12 and the second folding plate 13 to obtain the best viewing angle for the students.

[0078] The music teaching score demonstration device of the present invention combines an innovative mechanical structure with an intelligent teaching system to realize flexible and precise adjustment of the position and angle of the touch display screen 14, and at the same time can realize the storage of musical instrument scores and the comprehensive assistance of the teaching process to improve the efficiency of music teaching.

[0079] Embodiment 2:

[0080] As shown in the attached Figure 1 figure, the difference from Embodiment 1 is that handles 22 are fixedly connected to the side walls of the box door 2 by screws.

[0081] The specific implementation process is as follows:

[0082] The setting of the handle 22 can facilitate the teacher to open the storage box 1 to store musical instruments or scores.

[0083] Embodiment 3:

[0084] As shown in the attached Figure 2 figure, the difference from Embodiment 2 is that shock-absorbing rubber strips 23 are fixedly adhered to the frames of the touch display screens 14.

[0085] The specific implementation process is as follows:

[0086] The shock-absorbing rubber strips 23 can reduce the mutual extrusion and vibration between the touch display screens 14 during folding, and avoid damage to the touch display screens 14 during folding.

[0087] Obviously, the above embodiments are merely examples given for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to exhaustively list all implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present invention.

Claims

1. A music score demonstration device for music teaching, comprising a storage box (1), characterized in that: It also includes a controller and an intelligent teaching system; An opening is formed on the side wall of the storage box (1), and a box door (2) is symmetrically hinged on the opening; A plurality of universal wheels (3) are fixedly connected to the bottom of the storage box (1); The top of the storage box (1) is fixedly connected to an L-shaped support rod (24), the side wall of the L-shaped support rod (24) is fixedly connected to a base (25), the top of the base (25) is fixedly connected to a driving member (4), the output shaft of the driving member (4) is fixedly connected to a cam (5), a side wall of the cam (5) is provided with an annular groove (6) along its circumference, and the controller is used to control the rotation of the output shaft of the driving member (4), thereby driving the cam (5) to rotate; The top of the L-shaped support rod (24) is fixedly connected to a cross bar (7), a first slider (8) is laterally slidably engaged on a side wall of the cross bar (7), a second slider (9) is fixedly connected to a side wall of the first slider (8), and the second slider (9) is slidably engaged with the annular groove (6); The top of the L-shaped support rod (24) is also fixedly connected to a fixed shaft (10), and a rotating rod (11) is rotatably matched on the fixed shaft (10), and a straight groove is formed on the rotating rod (11), and an end of the rotating rod (11) away from the fixed shaft (10) is rotatably matched with a first folding plate (12) and a second folding plate (13) from top to bottom in sequence; a touch display screen (14) is fixedly connected to one side wall of the first folding plate (12) and the second folding plate (13); A first connecting rod (15) is hingedly connected to the top of the first sliding block (8); a second connecting rod (16) is hingedly connected to one end of the first connecting rod (15) away from the first sliding block (8); and an end of the second connecting rod (16) away from the first connecting rod (15) is fixedly connected to the side wall of the rotating rod (11); A folding assembly for folding the first folding plate (12) and the second folding plate (13) is provided on the L-shaped support rod (24).

2. The music score demonstration device for music teaching according to claim 1, characterized in that: The folding assembly comprises a positioning block (17), the positioning block (17) is fixedly connected to one end of the L-shaped support rod (24) close to the touch display screen (14), an arc groove is formed on the positioning block (17), a slide rod (18) is slidably matched on the arc groove, and the upper part of the slide rod (18) is slidably matched with the straight groove; the top and bottom ends of the slide rod (18) are fixedly connected to a limit block (19); the top of the limit block (19) located at the top of the slide rod (18) is hinged with a plurality of arc rods (20), and the end of the arc rod (20) away from the limit block (19) is hinged with a push block (21), and the push block (21) is respectively fixedly connected to the first folding plate (12) and the second folding plate (13) adjacent thereto.

3. The music score demonstration device for music teaching according to claim 2, characterized in that: A speaker is fixedly connected to the top of the storage box (1), and the controller is used to control the speaker to play sound.

4. The music score demonstration device for music teaching according to claim 3, characterized in that: A microphone is fixedly connected to the top of the storage box (1), and the controller is used to receive sound signals sent by the microphone.

5. The music score demonstration device for music teaching according to claim 4, characterized in that: The side walls of the box door (2) are fixedly connected with handles (22).

6. The music score demonstration device for music teaching according to claim 5, characterized in that: The frame of the touch display screen (14) is fixedly connected with a shock-absorbing rubber strip (23).

7. The music score demonstration device for music teaching according to claim 6, characterized in that: Intelligent teaching system includes: A collection module, used for collecting sound signals emitted by musical instruments in a classroom environment using a microphone; The analysis module includes a standard note feature table. The analysis module is used to extract key features from the music score and the sound signal collected by the collection module using an audio feature extraction algorithm to obtain key features; and based on the key features, automatically generate notes in real time by comparing the standard note feature table; The demonstration module is used to preset the beat and performance progress of the music score, and to display the music score and notes in the analysis module through a touch display screen (14); and to automatically turn pages of the music score according to the preset beat and performance progress of the music score; An interactive module for marking key points and adding annotations to the music score using a touch display screen (14); The control module is used to use a controller to control the rotation of an output shaft of a driving member (4) to adjust the position and angle of a touch display screen (14); use the controller to control a speaker to play sound; and use the controller to receive a sound signal from a microphone and convert it into a digital signal.

8. The music score demonstration device for music teaching according to claim 7, characterized in that: In the analysis module, key features include timbre, pitch and duration.

9. The music score demonstration device for music teaching according to claim 8, characterized in that: The analysis module includes an error correction unit; The error correction unit is used to locate the specific note position where the deviation occurs and generate targeted error correction prompt information when the key features generated by the analysis module deviate from the standard note feature table.

10. The music score demonstration device for music teaching according to claim 9, characterized in that: The demonstration module includes a musical instrument simulation unit; The instrument simulation unit is used to simulate different instruments to play the music score, and play the sound of the corresponding instrument playing the music score through the speaker.

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