CN115670116A - Music book positioner is used in vocal music training - Google Patents

Abstract

The invention relates to the technical field of training equipment, in particular to a music score positioning device for vocal music training, which comprises a base, a lifting mechanism and a bearing platform, wherein the upper surface of the bearing platform is provided with two sets of positioning mechanisms, each set of positioning mechanism comprises a movable rod and a pressure rod, the movable rod is in sliding connection with the bearing platform, two end parts of the movable rod are fixedly provided with sliding blocks, two end parts of the pressure rods are respectively provided with a sleeve frame, and the sliding blocks are in sliding connection with holes in the sleeve frames. The invention can provide effective support and fixation for the music book before performing vocal music training by comparing with the music book, and can also quickly adjust the height or the inclination angle of the music book in a fixed state.

Description

Music book positioner is used in vocal music training

Technical Field

The invention relates to the technical field of vocal music training, in particular to a music score positioning device for vocal music training.

Background

When a person conducts vocal music training, correct sounding requirements can be known only by contrasting syllables marked on a musical score book, and in order to provide proper training conditions for the training person, the musical score book is fixed by means of an auxiliary device so as to liberate the two hands of the training person.

Present vocal music training auxiliary device, its bearing function that has realized the music book, like the support that string music training or beautiful sound training used, can adjust the height of support according to training personnel's actual need simultaneously, high adjustment mechanism comprises lower support bar, last bracing piece and fastening screw, goes up the bracing piece and passes through fastening screw and link to each other with the lower support bar, and the height that whole device can be adjusted to the position of bracing piece is gone up in the regulation behind the not hard up fastening screw. However, when the auxiliary device is used, the inclination angle of the music book supporting platform is constant, training personnel need to frequently lower the head to observe the music book, a few auxiliary devices with adjusting functions exist on the market, and the adjusting work needs to be performed manually by personnel.

The height adjustment of auxiliary device and the angle modulation of music book cushion cap need mutually support just can reach the best visual angle of wanting, and the height control process is comparatively simple and convenient, but the angle modulation needs training personnel to finely tune many times according to the position of playing, also need prevent the landing of music book or page perk simultaneously, leads to whole accommodation process comparatively loaded down with trivial details. Therefore, a music score positioning device for vocal music training is provided.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the existing defects, and provide a music book positioning device for vocal music training, which can effectively support and fix a music book before a person performs vocal music training by referring to the music book, and can automatically adjust the height or the inclination angle of the music book in a fixed state, so that the training person can observe the music book from the most suitable position of the training person, and the music book positioning device is comprehensive in function and practical.

In order to achieve the purpose, the invention provides the following technical scheme: a music score positioning device for vocal music training comprises a base, a lifting mechanism and a bearing platform;

a square rod and a support are arranged in the middle of the upper surface of the base, and the upper end of the square rod extends out of a through hole in the support;

the lifting mechanism comprises a driving rod and a lifting rod, the driving rod is rotatably arranged in a through hole of the support, the lifting rod is in threaded connection with the driving rod, a square hole matched with the square rod is formed in the lifting rod, a notch is formed in the upper end of the lifting rod, a connecting pin rod is rotatably arranged in the notch, the outer side of the pin rod is fixedly connected with a swing rod, and supports are arranged on two sides of the swing rod;

the lower surface of the bearing platform is fixedly connected with the upper end of the swing rod and the support, the upper surface of the bearing platform is provided with two positioning mechanisms and two page turning mechanisms, each set of positioning mechanism comprises a movable rod and a pressing rod, the movable rods are connected with the bearing platform in a sliding mode, two end portions of each movable rod are fixedly provided with a sliding block, two end portions of each pressing rod are provided with a sleeve frame, and the sliding blocks are connected with holes in the sleeve frames in a sliding mode.

Furthermore, two strip-shaped holes are formed in the bearing platform, a movable rod of one set of positioning mechanism is correspondingly assembled in each strip-shaped hole, sliding strips are arranged on the inner sides of the two ends of each strip-shaped hole, and two sliding grooves matched with the sliding strips are formed in the peripheries of the movable rods.

Furthermore, the sliding strip is embedded and fixed in the strip-shaped hole.

Furthermore, the lower terminal surface of slider sets up the guide bar, the other end of guide bar runs through the cover frame, the part cover that the guide bar is located in the cover frame is equipped with first spring, first spring both ends respectively with slider and cover frame counterbalance.

Furthermore, the upper surface of the bearing platform is also provided with an accommodating groove, and the longer edge of the accommodating groove is in arc transition.

Further, positioning mechanism still includes the locking subassembly, the locking subassembly includes a locking bolt, a plurality of locking round pin and a plurality of second spring, the lower extreme of movable rod is equipped with the screw that extends along its axis direction, locking bolt threaded connection is in the screw, movable rod week side sets up a plurality of locking holes that extend along its radial direction, the both ends in locking hole set up first spacing boss, locking hole and screw intercommunication, the locking round pin is located the locking hole and can follows movable rod radial movement, the locking round pin is located one end in the screw for with locking bolt tip assorted slope form cooperation portion, the locking round pin is located the downthehole part of locking and sets up the spacing boss of second, the second spring housing is established in the locking round pin outside, the both ends of second spring respectively with the locking hole between the first spacing boss that is close to the outside and the second boss of locking round pin.

Furthermore, the end part, located at the screw hole, of the locking bolt is in a taper shape, and the cross sections of the locking hole and the locking pin are both in a quadrilateral structure.

Furthermore, a first driving motor is arranged in the base, an output shaft of the first driving motor is provided with a bevel gear, the driving rod is rotatably connected in the through hole of the support through a bearing, and one end of the driving rod, which is positioned in the support, is fixedly provided with a bevel gear ring meshed with the bevel gear.

Furthermore, a half turbine ring is arranged at the bottom end of the outer surface of the swing rod, the circle center of the half turbine ring is located on the central axis of the pin rod, a second driving motor is fixedly connected to the lifting rod, and a worm meshed with the half turbine ring is arranged on an output shaft of the second driving motor.

The page turning mechanism comprises a transverse sliding rail, a transverse screw rod, a third driving motor, a longitudinal sliding rail, a longitudinal screw rod, a fourth driving motor, a movable block and a page turning plate, wherein the transverse sliding rail is arranged at the front end of the upper surface of the bearing platform, the transverse screw rod is rotatably connected inside the transverse sliding rail through a bearing, an output shaft of the third driving motor arranged on the right side surface of the transverse sliding rail is fixedly connected with the transverse screw rod, a lug is arranged at the rear end of the bottom surface of the longitudinal sliding rail and is slidably connected with the transverse sliding rail, the transverse screw rod is in threaded connection with a screw hole formed in the middle of the lug at the rear end of the bottom surface of the longitudinal sliding rail, the longitudinal screw rod is rotatably connected inside the longitudinal sliding rail through a bearing, an output shaft of the fourth driving motor arranged on the rear side surface of the longitudinal sliding rail is fixedly connected with the longitudinal screw rod, the movable block is slidably connected inside the longitudinal sliding rail and is in threaded connection with the screw hole in the middle of the movable block, and the rear side surface of the movable block is provided with the page turning plate.

Furthermore, the pressing rod is rotatably connected with the sleeve frame, a fifth driving motor is arranged on the outer side of the sleeve frame and is in transmission connection with one end of the pressing rod, and the front end and the rear end of the outer arc surface of the pressing rod are fixedly sleeved with paper pickup wheels.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention discloses a music score positioning device for vocal music training, which comprises:

after a driving rod in the lifting mechanism rotates, the lifting rod is driven to lift up and down through a lead screw transmission principle, so that the overall height of the adjusting device is adjusted more accurately and quickly compared with an adjusting mode of fastening screws in the prior art.

The music book is clung to the bearing platform through the positioning mechanism, stays at different positions of the bearing platform through the sliding movable rod, and the distance between the two pressure rods is adjusted to provide a spacious operation space for the compression and positioning of the music book.

2. According to the music score positioning device for vocal music training, the slide bars in the strip-shaped holes of the bearing platform are designed in an embedded mode, and therefore assembly and replacement are convenient. The slider can reciprocate in the cover frame through the structural design of guide bar, first spring, realizes compressing tightly the location fast to the music book.

3. For thicker music book, the upper surface of the bearing platform is additionally provided with the accommodating groove which is used for being matched with the spine part of the music book, when the spine of the music book is placed in the accommodating groove, two opposite pages can be symmetrically and horizontally laid on the upper end surface of the bearing platform, in order to adapt to the shape of the opened music book, the longer edge of the accommodating groove is in arc transition design and is matched with the arc parts of the pages on the two sides of the spine, so that the music book is smoother after page turning, and notes or fonts close to the spine are prevented from being shielded.

4. In order to fix the positions of the pressure bars after adjustment, a locking assembly is additionally arranged in a positioning mechanism, after the distance between the two pressure bars is adjusted according to the opening width of a music book, a locking bolt is screwed into a screw hole of the movable bar until the tip of a locking screw rod is contacted with the tapered end parts of a plurality of locking pins, the shapes of the tip of the locking screw rod and the tapered end parts of the locking pins are matched with each other, the locking pins move outwards centrifugally along with the continuous extrusion of the locking screw rod, the outer ends of the locking pins are contacted with a bearing platform (the inner wall of a slide hole of the movable bar) and are tightly attached to each other, the movable bar is locked, the distance between the two pressure bars is fixed, and a second spring is compressed in the process; when the movable rod needs to be moved, after the locking bolt is screwed out, the second spring returns to deform to drive the locking pin to move centripetally to separate from the bearing platform, and the position of the movable rod is adjustable.

5. When in actual use, often need to practice repeatedly the multisection content of music book, the page of this in-process needs to the music book right side to turn over the page left, because the left and right sides of music book all is pressed from both sides tightly by the depression bar, need press the whole back of lifting up of the depression bar that lifts up the right side when turning over the page, though this mode can realize normally turning over the page, but after lifting up the depression bar, the intermediate position of the right half of music book can arch a take the altitude, consequently need user's hand to press the depression bar of right side again after arching the part and press the right half of music book on the music book can just can lay down the right half of music book, after same page upset left side, after left depression bar lifts up, the left side intermediate position of music book also can arch a take the altitude, also need the hand to press the back of music book to put down the depression bar, so the music book is inconvenient at the in-process of turning over the page more.

The invention combines the principle of manual page turning and the self structural design of the device, and is additionally provided with an automatic page turning mechanism, which comprises the following specific steps:

firstly, arranging paper pickup wheels at the peripheries of two pressure levers, designing a driving motor to drive the pressure levers to rotate in the circumferential direction, setting the rotation angle of the pressure levers according to the distance of the pages of a music book to be moved, when the left pressure lever rotates clockwise, horizontally moving the paper contacted with the paper pickup wheels to the left by the set distance, arching the paper to be turned, and then placing the paper below the paper with the turned pages in an original tiled state;

then, the page turning plate moves to the lower part of the arching position of the paper to be turned and is inserted into the arching position (between the paper to be turned and the next paper), and the page turning plate moves leftwards and turns the pages of the music book to one side of a left pressing rod;

and finally, the driving motor drives the left pressing rod to rotate clockwise by a set angle, and the paper pickup wheel on the left pressing rod retracts the page below the left pressing rod and compresses the page to complete the page turning function.

Therefore, the manual page turning principle and the structure of the device are effectively combined, the automatic turning of the pages on the music book can be realized, and the device can functionally improve one step, can cover all requirements of stable support, convenient height adjustment, stable positioning of the music book and automatic page turning of the music book in the vocal music training process, has comprehensive and practical functions, and has great practical popularization significance.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic bottom view of the present invention;

FIG. 3 is an enlarged view taken at reference A in FIG. 1;

FIG. 4 is a cross-sectional view of the present invention;

FIG. 5 is an enlarged view taken at B in FIG. 4;

FIG. 6 is an enlarged view taken at C in FIG. 4;

FIG. 7 is a cross-sectional view of the movable bar;

FIG. 8 is an enlarged view of the structure of FIG. 7 at D;

fig. 9 is a schematic structural view of the locking pin.

In the figure: 1-base, 2-bearing platform, 3-square bar, 4-support, 5-first driving motor, 6-bevel gear, 7-driving bar, 8-lifting bar, 9-bevel gear ring, 10-pin bar, 11-swing bar, 12-support, 13-half turbine ring, 14-second driving motor, 15-worm, 16-slide bar, 17-accommodating groove, 18-control switch group, 19-movable bar, 20-press bar, 21-slide block, 22-guide bar, 23-sleeve frame, 24-first spring, 25-fifth driving motor, 26-paper twisting wheel, 27-locking bolt, 28-locking pin, 281-inclined matching part, 29-second spring, 30-screw hole, 31-transverse slide rail, 32-transverse screw bar, 33-third driving motor, 34-longitudinal slide rail, 35-longitudinal screw bar, 36-fourth driving motor, 37-movable block, 38-turning plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-9, the present embodiment provides a music score positioning device for vocal music training, which includes a base 1, a lifting mechanism and a bearing platform 2;

the middle part of the upper surface of the base 1 is provided with a square rod 3 and a support 4, the upper end of the square rod 3 extends out of a through hole on the support 4, and the outer side of the support 4 is provided with a control switch group 18. A first driving motor 5 is arranged in the base 1, and an output shaft of the first driving motor 5 is provided with a bevel gear 6.

Elevating system includes actuating lever 7 and lifter 8, actuating lever 7 rotates through the bearing and connects in the through-hole of support 4, the one end that actuating lever 7 is located support 4 is fixed to be set up with bevel gear 6 engaged with awl tooth ring 9, 8 threaded connection of lifter are in actuating lever 7, set up the square hole with 3 looks adaptations of square bar on the lifter 8, the upper end of lifter 8 sets up the notch, notch internal rotation connects pin 10, the outside fixedly connected with pendulum rod 11 and support 12 of pin 10, the surface bottom of pendulum rod 11 is equipped with half turbine ring 13, the centre of a circle of half turbine ring 13 is located the central axis of pin 10, fixedly connected second driving motor 14 on the lifter 8, the output shaft of second driving motor 14 sets up the worm 15 with half turbine ring 13 meshing, support 12 is two and is located the pendulum rod 11 both sides respectively.

The lower surface and 11 upper ends of pendulum rod and support 12 fixed connection of cushion cap 2 set up the bar hole of two parallels on the cushion cap 2, and the both ends inboard in bar hole all sets up draw runner 16, and draw runner 16 inlays to be fixed in the bar is downthehole, and the upper surface of cushion cap 2 sets up holding tank 17, positioning mechanism and page turning mechanism.

The longer edge of the accommodating groove 17 is in arc transition, and the accommodating groove 17 is used for accommodating the book spine of the music book.

Two sets of positioning mechanisms are provided, each set of positioning mechanism comprises a movable rod 19, a pressure rod 20 and a set of locking assembly, two sliding grooves matched with the sliding strips 16 are formed in the periphery of each movable rod 19, each strip-shaped hole is correspondingly connected with one movable rod 19 in a sliding mode, and sliding blocks 21 are fixedly arranged at two end portions of each movable rod 19. The lower end surface of the slide block 21 is provided with a guide rod 22. The two ends of the pressure lever 20 are both provided with a sleeve frame 23, the slide block 21 is slidably connected with a hole in the sleeve frame 23, the other end of the guide lever 22 penetrates through the sleeve frame 23, a first spring 24 is sleeved on a part of the guide lever 22 located in the sleeve frame 23, two ends of the first spring 24 are respectively abutted against the slide block 21 and the sleeve frame 23, the pressure lever 20 is rotatably connected with the upper part of the sleeve frame 23, the outer side of the sleeve frame 23 is provided with a fifth driving motor 25, the fifth driving motor 25 is in transmission connection with one end of the pressure lever 20, the front end and the rear end of the outer arc surface of the pressure lever 20 are both fixedly sleeved with paper twisting wheels 26, and the paper twisting wheels 26 are toothed wheels made of rubber. The locking assembly comprises a locking bolt 27, a plurality of locking pins 28 and a plurality of second springs 29, the lower end of the movable rod 19 is provided with a screw hole 30 extending along the axis direction of the movable rod, the locking bolt 27 is in threaded connection in the screw hole 30, the end part of the locking bolt 27 located in the screw hole is in a taper shape, a plurality of locking holes extending along the radial direction of the movable rod 19 are formed in the peripheral side of the movable rod 19, first limiting bosses are arranged at the two ends of each locking hole, the locking holes are communicated with the screw hole, the locking pins 28 are located in the locking holes and can radially move along the movable rod 19, the cross sections of the locking holes and the locking pins 28 are both in a quadrilateral structure, one ends of the locking pins 28 located in the screw holes 30 are inclined matching portions 281 matched with the ends of the locking bolts, second limiting bosses are arranged at the parts of the locking pins 28 located in the locking holes, the second springs 29 are sleeved on the outer sides of the locking pins 28, and the two ends of the second springs 28 are respectively located between the first limiting bosses close to the outer sides of the locking holes and the second bosses of the locking pins 28.

The page turning mechanism comprises a transverse slide rail 31, a transverse screw rod 32, a third driving motor 33, a longitudinal slide rail 34, a longitudinal screw rod 35, a fourth driving motor 36, a movable block 37 and a page turning plate 38, wherein the transverse slide rail 31 is arranged at the front end of the upper surface of the bearing platform 2, the transverse screw rod 32 is rotatably connected inside the transverse slide rail 31 through a bearing, an output shaft of the third driving motor 33 arranged on the right side surface of the transverse slide rail is fixedly connected with the transverse screw rod 32, a convex block is arranged at the rear end of the bottom surface of the longitudinal slide rail 34 and is slidably connected with the transverse slide rail 31, the transverse screw rod 32 is in threaded connection with a screw hole formed in the middle of the convex block at the rear end of the bottom surface of the longitudinal slide rail 34, the longitudinal screw rod 35 is rotatably connected inside the longitudinal slide rail 34 through a bearing, an output shaft of the fourth driving motor 36 arranged on the rear side surface of the longitudinal slide rail 34 is fixedly connected with the longitudinal screw rod 35, the movable block 37 is slidably connected inside the longitudinal screw rod 35 and is in threaded connection with the screw hole in the middle of the movable block 37, and the rear side surface of the movable block 37 is provided with the page turning plate 38.

The first driving motor 5, the second driving motor 14, the third driving motor 33, the fourth driving motor 36 and the fifth driving motor 25 control the regulation and control of the switch group.

The invention provides a music score positioning device for vocal music training, which has the following working principle:

adjusting the height of the bearing platform: when the first driving motor 5 operates to drive the bevel gear 6 to rotate, the driving rod 7 can rotate under the influence of the meshing connection relationship between the bevel gear 6 and the bevel gear ring 9, and the lifting rod 8 vertically moves under the guiding action of the square rod 3 because the driving rod 7 is in threaded connection with the lifting rod 8, so that the height of the bearing platform 2 is adjusted, and the use requirements of different heights are met;

adjusting the angle of the bearing platform: when the second driving motor 14 operates to drive the worm 15 to rotate, under the influence of the meshing connection relationship between the worm 15 and the half-turbine ring 13, the swing rod 11 and the pin rod 10 rotate together with the central axis of the pin rod 10 as the center of a circle, so that the inclination angle of the bearing platform 2 is changed, and a trainer can observe a music book fixed on the bearing platform 2 from the angle most suitable for the trainer;

after the height and the angle adjustment of cushion cap 2 finish, the training personnel place the music book on the upper surface of cushion cap 2, can be according to the position in cushion cap 2 bar hole of the manual adjustment movable rod 19 of size according to the music book, screw in the screw hole with locking bolt 27 afterwards, when locking bolt 27 and the inner slope form cooperation portion 281 contact (coincide) of locking pin 28, receive the thrust influence of locking bolt 27, locking pin 28 can overcome the elasticity of second spring 29 and be centrifugal motion along the radial of movable rod 19, contact with the inner wall in the bar hole in cushion cap 2 gradually, the effect through frictional resistance realizes the position locking to movable rod 19, in order to avoid follow-up in-process movable rod 19 to take place the position skew and influence the fixed effect to the music book. Then, the staff manually pulls up the sleeve frame 23 and the pressing rod 20, the pressing rod 20 is released after the pressing rod 20 is placed above the music book, the first spring 24 recovers deformation, the sleeve frame 23 and the pressing rod 20 move downwards together under the guiding action of the guide rod 22, and the paper rubbing wheel 26 on the pressing rod 20 presses and fixes the music book.

Page turning principle: in an initial state, the paper rolling wheel 26 on the left side is tightly pressed on the left half part of the music book, the paper rolling wheel 26 on the right side is tightly pressed on the right half part of the music book, and the longitudinal slide rail 34 is positioned below the right half part of the music book. When a page needs to be turned, the right paper pickup wheel 26 is driven by the fifth driving motor 25 to rotate for a specified angle, and because friction force exists between the paper pickup wheel 26 and the contacted paper, the paper pickup wheel 26 can drive the paper needing to be turned right to slide leftwards, and the paper is raised and separated from the next paper; when the paper to be turned is raised, the fourth driving motor 36 works, the movable block 37 and the page turning plate 38 are driven by the lead screw to move towards the raised position of the paper and are inserted below the raised position, then the third driving motor 33 works, the longitudinal slide rail 34 is driven by the lead screw to move leftwards along the horizontal direction, the paper to be turned is driven to turn leftwards to the position of the paper twisting wheel 26 on the left side, the fourth driving motor 36 rotates in the opposite direction to reset the page turning plate 38, and the third driving motor 33 rotates in the opposite direction to reset the longitudinal slide rail 34; finally, the left paper rolling wheel 26 is driven by the fifth driving motor 25 to rotate clockwise, and the turned paper is pressed below the paper rolling wheel 26, so that page turning is completed.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. The utility model provides a music book positioner is used in vocal music training, includes base, elevating system and cushion cap, its characterized in that:

a square rod and a support are arranged in the middle of the upper surface of the base, and the upper end of the square rod extends out of a through hole in the support;

the lifting mechanism comprises a driving rod and a lifting rod, the driving rod is rotatably arranged in a through hole of the support, the lifting rod is in threaded connection with the driving rod, a square hole matched with the square rod is formed in the lifting rod, a notch is formed in the upper end of the lifting rod, a pin rod is rotatably connected in the notch, the outer side of the pin rod is fixedly connected with a swing rod, and supports are arranged on two sides of the swing rod;

the lower surface of the bearing platform is fixedly connected with the upper end of the swing rod and the support, the upper surface of the bearing platform is provided with two positioning mechanisms and two page turning mechanisms, each positioning mechanism comprises a movable rod and a pressure rod, the movable rods are connected with the bearing platform in a sliding mode, two end portions of each movable rod are fixedly provided with sliding blocks, two end portions of each pressure rod are provided with sleeve frames, and the sliding blocks are connected with holes in the sleeve frames in a sliding mode.

2. The music score positioning device for vocal music training of claim 1, wherein: set up two bar holes on the cushion cap, the downthehole movable rod of one set of positioning mechanism of corresponding assembly of every bar, the both ends inboard in bar hole all sets up the draw runner, the movable rod periphery sets up two spouts with draw runner looks adaptation.

3. The score positioning apparatus for vocal music training of claim 2, wherein: the sliding strip is embedded and fixed in the strip-shaped hole.

4. The music score positioning apparatus for vocal music training according to claim 2, wherein: the lower terminal surface of slider sets up the guide bar, the other end of guide bar runs through the cover frame, the part cover that the guide bar is located the cover frame is equipped with first spring, first spring both ends respectively with slider and cover frame counterbalance.

5. The music score positioning device for vocal music training of claim 1, wherein: the upper surface of cushion cap still sets up the holding tank.

6. The music score positioning device for vocal music training of claim 5, wherein: the longer edge of the accommodating groove is in arc transition.

7. The music score positioning device for vocal music training of claim 1, wherein: positioning mechanism still includes the locking subassembly, the locking subassembly includes a locking bolt, a plurality of locking round pin and a plurality of second spring, the lower extreme of movable rod is equipped with the screw that extends along its axis direction, locking bolt threaded connection is in the screw, movable rod week side sets up a plurality of locking holes that extend along its radial direction, the both ends in locking hole set up first spacing boss, locking hole and screw intercommunication, the locking round pin is located in the locking hole and can follows movable rod radial movement, the locking round pin is located the one end in the screw for with locking bolt tip assorted slope form cooperation portion, the locking round pin is located the downthehole part of locking and sets up the spacing boss of second, the second spring housing is established in the locking round pin outside, the both ends of second spring respectively with the locking hole be close to between the first spacing boss in the outside and the second boss of locking round pin.

8. The music score positioning device for vocal music training of claim 7, wherein: the end part of the locking bolt, which is positioned in the screw hole, is in a taper shape, and the cross sections of the locking hole and the locking pin are both in a quadrilateral structure.

9. The music score positioning device for vocal music training of claim 1, wherein: the base is internally provided with a first driving motor, an output shaft of the first driving motor is provided with a bevel gear, the driving rod is rotatably connected in the through hole of the support through a bearing, and one end of the driving rod, which is positioned in the support, is fixedly provided with a bevel gear ring meshed with the bevel gear.

10. The music score positioning device for vocal music training of claim 1, wherein: the bottom end of the outer surface of the swing rod is provided with a half turbine ring, the circle center of the half turbine ring is located on the central axis of the pin rod, the lifting rod is fixedly connected with a second driving motor, and an output shaft of the second driving motor is provided with a worm meshed with the half turbine ring.

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