Elbow lifting assisting device for violoncello practice in music major

Abstract

The invention discloses an auxiliary elbow lifting device for violoncello practice in music major, and particularly relates to the technical field of auxiliary elbow lifting devices, the auxiliary elbow lifting device comprises a mounting plate, and the top of the mounting plate is provided with a lifting piece for assisting the violoncello elbow lifting practice; the lifting part comprises a fixing support arranged at the top of the mounting plate, a threaded rod movably connected through a bearing is mounted at the top of the fixing support, an auxiliary support is arranged at the top of the threaded rod, the two ends of the auxiliary support are movably mounted outside the threaded rod through bearings, and a pressure sensor is mounted at the top of the auxiliary support. The auxiliary support on the fixed support is supported through the telescopic rod and the spring, so that when the auxiliary support is pressed, the fixed support can be driven to move downwards to make contact with the light touch switch, the light touch switch is started, meanwhile, the warning lamp is started to flicker, and a practicer is warned to conduct adjustment in time; therefore, the exercise height and angle of the exerciser can be limited and monitored in real time.

Description

Technical Field

[0001] The present invention relates to the technical field of auxiliary elbow-lifting devices, and more specifically to an auxiliary elbow-lifting device for cello practice in the music major. Background Art

[0003] To ensure the beauty of the cello playing posture, it is required that the elbow of the left upper limb of the practitioner be kept lifted. For this purpose, an auxiliary device is often used for cooperative practice. As shown in the prior art with the publication number CN218333097U, although the first connecting block and the second connecting block are connected as a whole through the internal thread of the connecting cavity and the external thread of the connecting column, and then the total connecting length of the two connecting bands is adapted to the body type of the user by pulling one connecting band through the telescopic buckle. After the adjustment is completed, the whole formed by the first connecting block and the second connecting block relies on the pulling force of the connecting band to form a lifting effect on the elbow of one upper limb of the practitioner, realizing auxiliary elbow-lifting, with good practicability and convenience in use. However, this prior art needs to be tied and fixed on the body, which will affect the comfort of the practitioner during use, and has insufficient stability, and is prone to skewing and shaking due to physical reasons. Moreover, the angle and height cannot always remain stationary, which will further affect the performance of this technical solution. Summary of the Invention

[0004] Therefore, the present invention provides an auxiliary elbow-lifting device for cello practice in the music major to solve the problems in the prior art that the comfort and stability of the practitioner are affected because the elbow-lifting training device needs to be tied and fixed on the practitioner's body.

[0005] To achieve the above object, the embodiments of the present invention provide the following technical solutions: An auxiliary elbow-lifting device for cello practice in the music major, including a mounting plate, and a lifting member for assisting cello elbow-lifting practice is installed on the top of the mounting plate;

[0006] The lifting member includes a fixed bracket provided on the top of the mounting plate. A threaded rod is installed on the top of the fixed bracket through a bearing. An auxiliary bracket is provided at the top of the threaded rod, and both ends of the auxiliary bracket are movably installed outside the threaded rod through bearings. A pressure sensor is installed on the top of the auxiliary bracket. Two clamping plates sleeved outside the threaded rod are provided at the bottom of the auxiliary bracket, and the clamping plates are threadedly connected to the threaded rod. The two sides of the two clamping plates away from each other are respectively in contact with both ends of the auxiliary bracket;

[0007] Both bottoms of the two ends of the fixed bracket are installed with telescopic rods for connecting the mounting plate, and springs are sleeved outside the tops of the telescopic rods. A touch switch is arranged between the two telescopic rods, and a warning lamp is arranged on the front side of the touch switch. The warning lamp and the touch switch are both installed on the top of the mounting plate. The fixed bracket is supported by the spring, so that the fixed bracket will move downward when pressed. Therefore, when the elbow of the practitioner is placed on the auxiliary bracket, the practitioner needs to lift the elbow by himself with force to support, so as to achieve the effect of assisting the elbow of the practitioner to practice. And when the auxiliary bracket is pressed and contacts the touch switch, since the touch switch conducts or disconnects the circuit by applying pressure, when the auxiliary bracket contacts the touch switch, the circuit is conducted and the warning lamp is started to warn the practitioner to correct the mistake and correct the practice posture in time.

[0008] Further, a base is arranged at the bottom of the mounting plate, and a support column is installed on the top of the base. A support groove is opened at the top of the support column, and a support plate is arranged inside the support groove. The top of the support plate is installed with an assembly column located at the top of the support column, and an adjusting ring is sleeved outside the assembly column and is movably connected through a bearing; the bottom end of the adjusting ring is sleeved outside the support column, and the inner wall of the adjusting ring is threadedly connected with the outside of the support column. By the threaded connection between the adjusting ring and the support column, it is convenient for the practitioner to operate the adjusting ring to drive the mounting plate connected to the assembly column to displace, and thus the effect of adjusting the height of the auxiliary bracket is achieved.

[0009] Further, a display screen is arranged on one side of the top end of the fixed bracket, a camera is installed on the top of the display screen, a connecting column is installed at the bottom end of the display screen, a connecting bracket is arranged at the bottom of the connecting column, and a connecting groove is opened at the top of the connecting bracket; the bottom end of the connecting column extends into the connecting groove; a controller is arranged at the bottom of the display screen, and the controller is installed on the front side of the top end of the connecting bracket. The connecting column is movably installed in the connecting groove through a bearing, so that the practitioner can operate the connecting column to adjust the angles of the display screen and the camera, thereby improving the practicability and operability of the present invention.

[0010] Further, a fastening bolt is arranged on the front side of the top end of the connecting bracket, and the fastening bolt penetrates through the connecting bracket and extends into the connecting groove, and the rear end of the fastening bolt contacts the connecting column. Due to the movable connection between the connecting column and the connecting groove, the practitioner can operate the connecting column to rotate the display screen, so as to rotate the display screen and the camera to a suitable shooting angle and playing angle. Then, by the extrusion and fixation of the fastening bolt on the connecting column, the adjusted connecting column can be fixed, so as to ensure the stability of the display screen and the camera and avoid the situation of shaking and skew.

[0011] Further, a player is installed on the top of the front end of the mounting plate, and the player is arranged on one side of the warning lamp. The player encourages and supports the practitioners who reach the standard in practice, and improves the practice confidence of the practitioners.

[0012] Further, an outer threaded connection is provided between the top end of the adjusting ring and a moving ring, and a positioning ring is installed outside the top end of the moving ring and is movably connected through a bearing. Positioning columns are installed at the top of both ends of the positioning ring. The top ends of the positioning columns penetrate through the mounting plate and extend to the top of the mounting plate. Through the threaded connection between the moving ring and the adjusting ring, the practitioner can rotate the moving ring to drive the positioning ring and the positioning columns to adjust the height. When the positioning columns move upward and contact the fixing bracket, the fixing bracket can be limited, preventing the fixing bracket from contacting the touch switch. When the positioning columns move downward and separate from the fixing bracket, the fixing bracket can move downward to contact the touch switch, achieving the effect of reminding the practitioner to correct the posture.

[0013] Further, a knob is installed on the side of the fixing bracket away from the display screen. The knob penetrates through the fixing bracket and is fixed to the threaded rod. Since the knob is fixed to the threaded rod, the practitioner can operate the knob to drive the threaded rod to rotate, thereby improving the convenience for the practitioner to operate the threaded rod.

[0014] Further, the cross-sections of the support plate and the support groove are both rectangular, and the outside of the support plate is in contact with the inner wall of the support groove. Since the cross-sections of the support plate and the support groove are both rectangular, the support groove can limit the support plate, thereby ensuring the stability of the mounting plate and preventing the mounting plate from rotating during displacement.

[0015] Further, a guide plate is installed on the top of the fixing bracket. A guide hole is provided on one side of the bottom end of the clamping plate corresponding to the guide plate. The guide plate is arranged inside the guide hole. By the cooperation of the guide plate and the guide hole, the clamping plate can be limited, thereby ensuring the stability of the clamping plate during displacement, driving the clamping plate to perform a stable lateral displacement, and preventing the clamping plate from being skewed or offset during displacement.

[0016] Further, the thread directions of the two ends of the threaded rod are opposite, and the threads at both ends of the threaded rod are symmetrically distributed about the central axis of the threaded rod. By setting the thread directions of the two ends of the threaded rod to be opposite, it is convenient to synchronously adjust the two clamping plates, thereby improving the convenience for the practitioner to operate the clamping plates to fix the auxiliary bracket.

[0017] The present invention has the following advantages:

[0018] 1. The auxiliary bracket on the fixing bracket is supported by the telescopic rod and the spring. When the auxiliary bracket is pressed, it drives the fixing bracket to move downward and contact the touch switch. The touch switch is activated and at the same time the warning light flashes, warning the practitioner to make timely adjustments. In this way, the practice height and angle of the practitioner can be limited and monitored in real time, ensuring the practice efficiency and practice effect;

[0019] 2. By rotating the adjusting ring threadedly connected to the support column, the adjusting ring can drive the mounting plate connected to the assembly column to move upward, achieving the effect of adjusting the height of the auxiliary support on the fixed bracket. Also, since the auxiliary support is movably connected to the threaded rod, it is convenient to rotate the auxiliary support to adjust the support angle. Then, rotate the threaded rod to drive the two clamping plates to squeeze and fix the auxiliary support. Thus, the height and angle can be adjusted according to the body shape and exercise needs of the practitioner.

[0020] 3. The elbow strength of the practitioner is monitored by the pressure sensor. At the same time, the practitioner can apply a certain amount of pressure to the auxiliary support without touching the touch switch. In this way, the elbow can make relative movement with the spring, exercising the stability and strength control of the elbow. And through the data recording of the pressure sensor, the exercise posture and strength can be scientifically adjusted, and the force application magnitude, exercise time, etc. of subsequent exercises can be more scientifically optimized and adjusted. This can more effectively and scientifically help the practitioner to train.

[0021] 4. By using the player in cooperation, the exercise can be made more interesting and attractive, thereby stimulating the internal motivation of the practitioner, enabling the practitioner to have more interest and expectation in the exercise. And after achieving the established goal, positive feedback can be obtained immediately, which can greatly enhance self-confidence. This immediate positive reinforcement helps the trainee believe in their own abilities and thus face the subsequent training more actively.

[0022] 5. Through the cooperation of the camera and the display screen, the practitioner can be recorded and displayed in real time. By observing their own movements in real time on the display screen, mistakes can be corrected in time, improving the training efficiency. The immediate feedback mechanism helps the practitioner master the correct technical essentials faster. And when seeing that they are approaching the goal, a sense of achievement and self-confidence will be enhanced, thus motivating the practitioner to train harder. The video recording of the camera can be used for self-study and practice. In this way, the efficiency and quality of the elbow raising exercise can be improved, and the self-confidence and motivation of the trainee can be enhanced.

[0023] 6. The connecting column is limited and fixed by the fastening bolt. This can facilitate the fixing of the display screen after rotational adjustment, achieving multi-angle adjustment of the display screen and the camera. At the same time, the fastening bolt can also be rotated and disassembled, so that the bottom end of the connecting column is not limited and it is convenient to disassemble the display screen and the camera. This can facilitate the disassembly and assembly adjustment of the camera and the display screen according to the exercise needs of the practitioner, catering to the needs of the practitioner, and further effectively improving the practicality and operability of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are merely exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained based on the provided drawings.

[0025] The structures, proportions, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 For the present invention Figure 1 It is an enlarged view of part A in

[0028] Figure 3 It is a schematic diagram of the adjusted auxiliary bracket of the present invention;

[0029] Figure 4 It is a side sectional view of the support column of the present invention;

[0030] Figure 5 It is a side sectional view of the support groove of the present invention;

[0031] Figure 6 It is a front view of the auxiliary bracket of the present invention;

[0032] Figure 7 It is an exploded view of the clamping plate of the present invention;

[0033] Figure 8 It is an exploded view of the connecting column of the present invention.

[0034] In the figure: 1, mounting plate; 2, fixed bracket; 3, threaded rod; 4, auxiliary bracket; 5, clamping plate; 6, telescopic rod; 7, spring; 8, touch switch; 9, warning light; 10, base; 11, support column; 12, support groove; 13, support plate; 14, assembly column; 15, adjusting ring; 16, display screen; 17, camera; 18, connecting column; 19, connecting bracket; 20, connecting groove; 21, controller; 22, fastening bolt; 23, player; 24, guiding hole; 25, pressure sensor; 26, moving ring; 27, positioning ring; 28, positioning column; 29, knob; 30, guiding plate. Specific embodiments

[0035] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0036] Referring to the attached Figures 1-8 to the specification, the present invention provides an auxiliary elbow-lifting device for cello practice in the music major, including a mounting plate 1, and a lifting member for assisting cello elbow-lifting practice is installed on the top of the mounting plate 1;

[0037] As Figure 1 , 2 , 3 and 6 show, the lifting member includes a fixed bracket 2 provided on the top of the mounting plate 1, a threaded rod 3 is installed on the top of the fixed bracket 2 and is movably connected through a bearing, an auxiliary bracket 4 is provided at the top of the threaded rod 3, and both ends of the auxiliary bracket 4 are movably installed outside the threaded rod 3 through bearings. Since a knob 29 is installed on the side of the fixed bracket 2 away from the display screen 16, the knob 29 penetrates through the fixed bracket 2 and is fixed to the threaded rod 3, so that the practitioner can operate the knob 29 to drive the threaded rod 3 to rotate, improving the convenience for the practitioner to operate the threaded rod 3. Two clamping plates 5 sleeved outside the threaded rod 3 are provided at the bottom of the auxiliary bracket 4, and the clamping plates 5 are threadedly connected to the threaded rod 3. The two sides of the two clamping plates 5 away from each other are respectively in contact with both ends of the auxiliary bracket 4; telescopic rods 6 for connecting the mounting plate 1 are installed at the bottoms of both ends of the fixed bracket 2, and a spring 7 is sleeved outside the top of the telescopic rod 6. A touch switch 8 is provided between the two telescopic rods 6, and a warning lamp 9 is provided on the front side of the touch switch 8. The warning lamp 9 and the touch switch 8 are both installed on the top of the mounting plate 1. Since a moving ring 26 is threadedly connected to the outside of the top end of the adjusting ring 15, and a positioning ring 27 is installed on the outside of the top end of the moving ring 26 and is movably connected through a bearing, positioning columns 28 are installed on the tops of both ends of the positioning ring 27, and the top ends of the positioning columns 28 penetrate through the mounting plate 1 and extend to the top of the mounting plate 1, so that the practitioner can rotate the moving ring 26 threadedly connected to the adjusting ring 15 to move upward, and the moving ring 26 drives the positioning columns 28 on the positioning ring 27 to contact the fixed bracket 2, achieving the effect of supporting and fixing the fixed bracket 2, thereby facilitating beginners to stably place their elbows on the auxiliary bracket 4 for practice.

[0038] When in use, the practitioner moves the present invention to a suitable position for operation, and then, according to the height requirement, the practitioner rotates the adjusting ring 15 threadedly connected to the support column 11 to move upward, and the adjusting ring 15 drives the mounting plate 1 to adjust the height by means of the fitting column 14, so as to facilitate the displacement of the auxiliary bracket 4 to a suitable height;

[0039] Then, rotate the auxiliary bracket 4 that is movably connected to the threaded rod 3 to facilitate rotating the auxiliary bracket 4 to an appropriate angle. After that, rotate the knob 29 to drive the threaded rod 3 to rotate. The threaded rod 3 then drives the two clamping plates 5 to displace outward simultaneously and come into close contact with the auxiliary bracket 4, achieving the effect of squeezing and fixing the auxiliary bracket 4 and ensuring the stability of the auxiliary bracket 4. By adjusting the height and angle of the auxiliary bracket 4, it is convenient to perform multi-functional adjustment according to the body shape needs and practice requirements of the practitioner, improving the practicability and operability of the present invention;

[0040] After adjustment, the practitioner operates the moving ring 26 that is threadedly connected to the adjusting ring 15 to drive the positioning ring 27 to move upward, so that the positioning column 28 can contact the fixed bracket 2, achieving the effect of supporting and limiting the fixed bracket 2, and preventing the auxiliary bracket 4 from being pressed to drive the fixed bracket 2 to contact the touch switch 8. This facilitates the practitioner to place the elbow on the auxiliary bracket 4 for preliminary practice;

[0041] After adaptation, the practitioner rotates the moving ring 26 to drive the positioning column 28 on the positioning ring 27 to separate from the fixed bracket 2, and places the elbow on the auxiliary bracket 4 for auxiliary practice. When the elbow of the practitioner drops due to not maintaining the established practice height and angle, the auxiliary bracket 4 will drive the fixed bracket 2 supported by the spring 7 to move downward due to the falling pressure of the elbow, and make the fixed bracket 2 contact the touch switch 8. The touch switch 8 simultaneously activates the warning light 9 to flash, warning the practitioner to make timely adjustments. This can monitor the practice angle of the practitioner in real time, ensure the practice efficiency and practice effect, and have higher support stability;

[0042] At the same time, the connecting column 18 that is movably connected to the connecting bracket 19 can also be rotated to facilitate rotating the display screen 16 and the camera 17 to appropriate positions. The camera 17 takes pictures of the body shape and posture of the practitioner during practice and displays them through the display screen 16, enabling the practitioner to intuitively understand the practice effect and practice status, facilitating self-reflection and self-correction, and improving the practice effect;

[0043] When the practitioner does not make mistakes and meets the practice standards within a certain practice duration, the player 23 plays congratulatory audio to encourage the practitioner, improve the practitioner's practice interest and sense of honor, and enhance the practitioner's experience;

[0044] In order to ensure the stability of the practitioner's elbow, the practitioner can press down the auxiliary bracket 4 to a certain extent and make the auxiliary bracket 4 not contact the touch switch 8, and then use the rebound force of the spring 7 to lift the practitioner's elbow, so that the practitioner's elbow and the spring 7 move relative to each other, thereby exercising the stability and strength control of the elbow, and then using the data feedback from the pressure sensor 25 to help the practitioner understand the force application situation in time, so as to adjust the exercise posture and strength, and at the same time, through the data recording of the pressure sensor 25, the force application size, exercise time, etc. of subsequent exercises can be more scientifically optimized and adjusted, thereby helping the practitioner to train more effectively and scientifically.

[0045] To facilitate training for beginners, Figure 1 , 2 As shown in Figure 4, a base 10 is provided at the bottom of the mounting plate 1, and a support column 11 is installed on the top of the base 10. A support groove 12 is opened at the top of the support column 11, and a support plate 13 is provided inside the support groove 12. An assembly column 14 located at the top of the support column 11 is installed at the top of the support plate 13, and an adjusting ring 15 is sleeved on the outside of the assembly column 14 and movably connected through a bearing; the bottom end of the adjusting ring 15 is sleeved on the outside of the support column 11, and the inner wall of the adjusting ring 15 is threadedly connected to the outside of the support column 11. By rotating the adjusting ring 15 threadedly connected to the support column 11, the mounting plate 1 connected to the assembly column 14 can be driven to move up, so as to achieve the effect of adjusting the height of the auxiliary bracket 4. Because the cross-section of the support plate 13 and the cross-section of the support groove 12 are both set to be rectangular, and the outside of the support plate 13 is in contact with the inner wall of the support groove 12, the engagement of the support plate 13 and the support groove 12 can limit the mounting plate 1, avoid the rotation of the mounting plate 1 during the displacement process, and ensure the stability of the mounting plate 1 when it moves outward.

[0046] In order to facilitate self-correction by practitioners, Figure 1 , 3As shown in FIGS. 7 and 8, a display screen 16 is provided on one side of the top end of the fixing bracket 2. A camera 17 is installed on the top of the display screen 16. A connecting column 18 is installed at the bottom end of the display screen 16. A connecting bracket 19 is provided at the bottom of the connecting column 18. An engaging groove 20 is formed at the top of the connecting bracket 19. The bottom end of the connecting column 18 extends into the engaging groove 20. A controller 21 is provided at the bottom of the display screen 16. The controller 21 is installed at the front side of the top end of the connecting bracket 19. The camera 17 takes pictures of the body shape and posture of the practitioner during practice, and then the display screen 16 plays the pictures, so that the practitioner can understand the practice effect, and at the same time, it is convenient for the practitioner to download video information and watch it repeatedly. Thus, it is convenient for the practitioner to self-reflect and self-correct, improving the practice effect. Also, since a fastening bolt 22 is provided at the front side of the top end of the connecting bracket 19, and the fastening bolt 22 penetrates through the connecting bracket 19 and extends into the engaging groove 20, and the rear end of the fastening bolt 22 contacts the connecting column 18, after the practitioner rotates and adjusts the display screen 16, the display screen 16 can be fixed and limited by the tight fit between the fastening bolt 22 and the connecting column 18, ensuring the stability of the display screen 16. And the practitioner can rotate and disassemble the fastening bolt 22, so that the bottom end of the connecting column 18 is not limited, facilitating the disassembly of the display screen 16 and the camera 17. Thus, it is convenient to install and adjust the camera 17 and the display screen 16 according to the practice needs of the practitioner, improving the practicability and operability of the present invention.

[0047] To improve the practice interest of the practitioner, as Figure 1 、 2 shown in FIGS. 2, 3 and 6, a player 23 is installed at the top of the front end of the mounting plate 1. The player 23 is provided on one side of the warning lamp 9. By playing audio through the player 23, the practitioners who have reached the standard in practice are encouraged, thus improving the confidence and sense of honor of the practitioner during practice and effectively enhancing the experience of the practitioner.

[0048] To ensure the stability of the displacement of the clamping plate 5, as Figure 7 shown in FIG. 5, a guide plate 30 is installed at the top of the fixing bracket 2. A guide hole 24 is formed on one side of the bottom end of the clamping plate 5 corresponding to the guide plate 30. The guide plate 30 is arranged inside the guide hole 24. By the engagement between the guide plate 30 and the guide hole 24, the guide plate 30 can limit the clamping plate 5, thus driving the clamping plate 5 to perform a lateral displacement and preventing the clamping plate 5 from shifting during the displacement. Also, since the two ends of the threaded rod 3 have opposite thread directions and the threads at both ends of the threaded rod 3 are symmetrically distributed about the central axis of the threaded rod 3, the threaded rod 3 can drive the two clamping plates 5 to move inward or outward synchronously, thus facilitating the practitioner to synchronously squeeze and fix both ends of the auxiliary bracket 4 and improving the operation convenience of the practitioner.

[0049] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it on the basis of the present invention, which will be obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection claimed by the present invention.

Claims

1. A music professional cello practice auxiliary elbow lifting device, comprising a mounting plate (1), characterized in that: A lifting member for assisting elbow lifting exercises on the cello is installed on the top of the mounting plate (1); The lifting member comprises a fixed bracket (2) arranged on the top of the mounting plate (1), a threaded rod (3) movably connected via a bearing is installed on the top of the fixed bracket (2), an auxiliary bracket (4) is arranged on the top of the threaded rod (3), and both ends of the auxiliary bracket (4) are movably installed on the outside of the threaded rod (3) via bearings, a pressure sensor (25) is installed on the top of the auxiliary bracket (4), and two clamping plates (5) sleeved on the outside of the threaded rod (3) are arranged on the bottom of the auxiliary bracket (4), and the clamping plates (5) are threadedly connected to the threaded rod (3), and the two clamping plates (5) are in contact with the two ends of the auxiliary bracket (4) respectively. Telescopic rods (6) for connecting to the mounting plate (1) are installed at the bottom of both ends of the fixed bracket (2), and a spring (7) is sleeved on the top of the telescopic rod (6). A touch switch (8) is provided between the two telescopic rods (6), and a warning light (9) is provided on the front side of the touch switch (8). The warning light (9) and the touch switch (8) are both installed on the top of the mounting plate (1).

2. The elbow-lifting device for professional cello practice according to claim 1, characterized in that: The bottom of the mounting plate (1) is provided with a base (10), and a support column (11) is installed on the top of the base (10); a support groove (12) is provided on the top of the support column (11), and a support plate (13) is provided inside the support groove (12); an assembly column (14) located at the top of the support column (11) is installed on the top of the support plate (13); and an adjustment ring (15) movably connected through a bearing is sleeved on the outside of the assembly column (14); The bottom end of the adjusting ring (15) is sleeved on the outside of the supporting column (11), and the inner wall of the adjusting ring (15) is threadedly connected to the outside of the supporting column (11).

3. The elbow-lifting device for professional cello practice according to claim 1, characterized in that: A display screen (16) is provided on one side of the top of the fixed bracket (2), a camera (17) is installed on the top of the display screen (16), a connecting column (18) is installed on the bottom of the display screen (16), a connecting bracket (19) is provided at the bottom of the connecting column (18), and a connecting groove (20) is provided at the top of the connecting bracket (19), and the bottom end of the connecting column (18) extends into the inside of the connecting groove (20); A controller (21) is provided at the bottom of the display screen (16), and the controller (21) is installed on the front side of the top end of the connecting bracket (19).

4. The device for assisting elbow lifting for professional cello practice according to claim 3, characterized in that: A fastening bolt (22) is provided at the front side of the top end of the connecting bracket (19), and the fastening bolt (22) penetrates the connecting bracket (19) and extends into the interior of the connecting groove (20), and the rear end of the fastening bolt (22) contacts the connecting column (18).

5. The elbow-lifting device for professional cello practice according to claim 1, characterized in that: A player (23) is installed on the top of the front end of the installation plate (1), and the player (23) is arranged on one side of the warning light (9).

6. The device for assisting elbow lifting for professional cello practice according to claim 2, characterized in that: The top of the adjusting ring (15) is externally threadedly connected to a moving ring (26), and the top of the moving ring (26) is externally mounted with a positioning ring (27) movably connected via a bearing, and the tops of both ends of the positioning ring (27) are both mounted with positioning columns (28), and the tops of the positioning columns (28) penetrate the mounting plate (1) and extend to the top of the mounting plate (1).

7. The device for assisting elbow lifting for professional cello practice according to claim 2, characterized in that: A knob (29) is installed on the side of the fixing bracket (2) away from the display screen (16); the knob (29) passes through the fixing bracket (2) and is fixed to the threaded rod (3).

8. The elbow-lifting device for professional cello practice according to claim 2, characterized in that: The cross-sections of the support plate (13) and the support groove (12) are both set to be rectangular, and the outside of the support plate (13) is in contact with the inner wall of the support groove (12).

9. The music professional cello practice auxiliary elbow lifting device according to claim 1, characterized in that: A guide plate (30) is installed on the top of the fixed bracket (2), a guide hole (24) is opened on one side of the bottom end of the clamping plate (5) corresponding to the guide plate (30), and the guide plate (30) is arranged inside the guide hole (24).

10. The elbow-lifting device for professional cello practice according to claim 1, characterized in that: The threads at the two ends of the threaded rod (3) have opposite thread directions, and the threads at the two ends of the threaded rod (3) are symmetrically distributed about the central axis of the threaded rod (3).

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