CN114712822A

CN114712822A - Gravity center auxiliary support teaching aid based on single-board skiing and construction method

Info

Publication number: CN114712822A
Application number: CN202210545360.4A
Authority: CN
Inventors: 张巍; 韩宗丽
Original assignee: Shenyang Sport University
Current assignee: Shenyang Sport University
Priority date: 2022-05-19
Filing date: 2022-05-19
Publication date: 2022-07-08
Anticipated expiration: 2042-05-19
Also published as: CN114712822B

Abstract

The invention discloses a gravity center auxiliary support teaching aid based on single board skiing and a construction method, wherein the gravity center auxiliary support teaching aid comprises: a plate body; the two mounting frames are arranged at the tops of the plate bodies, and the supporting seat is arranged on each mounting frame; and the auxiliary adjusting mechanism is arranged on the supporting seat and is used for assisting the leg bending change of the beginner during the skiing of the veneer. The invention utilizes the functions of the supporting plate and the first swinging rod to form an exoskeleton support for the leg of the beginner, utilizes the mechanical control of the connecting rod and sliding block mechanism to assist the leg of the beginner to do bending movement, has standard correcting function for the skiing action and the standing posture of the beginner, simultaneously utilizes the mechanical control to actively adjust the bending degree of the leg of the beginner, effectively avoids the adverse effect caused by the exceeding of the limit range of the bending action, further reduces the possibility of overturning the snowboard and improves the safety performance.

Description

Gravity center auxiliary support teaching aid based on single-board skiing and construction method

Technical Field

The invention relates to the technical field of single-board skiing, in particular to a gravity center auxiliary support teaching aid based on single-board skiing and a construction method.

Background

From the point of single board skiing stress, unlike flat placement, in order to maintain the balance of the forces exerted on the snowboard when the blade is raised, the center of mass and the edge line of the snowboard need to be kept perpendicular to the bottom of the snowboard, and in this position, the snowboard can be continuously pressed fully and in balance. Since the snowboard width of the single board is significant, the center of mass moves across the board waist width at the front and rear edges, hip folds and knee and ankle bends, cooperate to maintain the center of mass between the feet, and at the flat board, the upright front and rear edges lie on different support axes. The degree and magnitude of folding and flexion is directly related to snowshoes, and excessive hip folding can cause a shift in the center of mass. Maintaining the center of mass shift on the support axis at the same blade angle, depending on the range of flexion of the snowshoe and ankle, beyond which flexion motion can produce a change in the lever that causes the blade angle to change, which if not reestablished equilibrium, could result in the snowboard flipping.

Disclosure of Invention

The invention aims to provide a gravity center auxiliary support teaching aid based on snowboarding and a construction method thereof.

In order to achieve the purpose, the invention provides the following technical scheme: gravity center auxiliary stay teaching aid based on veneer skiing includes: a plate body; the two mounting frames are arranged at the top of the plate body, and the supporting seat is arranged on each mounting frame; the auxiliary adjusting mechanism is arranged on the supporting seat and is used for assisting leg bending change of a beginner during single-board skiing; the auxiliary adjusting mechanism comprises two brackets fixed on the supporting seat and two first swinging rods arranged on opposite surfaces of the brackets, and the two first swinging rods are rotatably connected with the upper parts of the brackets through mounting shafts; the first swing rod is rotatably arranged on the top of the first swing rod, and the outer wall of the first swing rod is fixedly provided with a first supporting plate; the connecting rod sliding block mechanism is arranged at the bottom of the first swinging rod and used for realizing deflection of the first swinging rod and driving the supporting plate to move; and the second strap component is arranged on the supporting plate, and the third strap component is arranged on the first swinging rod and is used for restraining the legs of the experiencer.

Preferably, the connecting rod sliding block mechanism comprises an electric sliding rail arranged on the bracket, an electric sliding block is slidably mounted on the electric sliding rail, and a rotatable connecting rod is mounted on the side wall of the electric sliding block;

the first transmission wheel is rotatably arranged at the bottom of the first swinging rod, and one end of the connecting rod, which is far away from the electric sliding block, is fixedly connected with the end part where the first transmission wheel is located;

and the transmission belt is in transmission connection between the second transmission wheel and the first transmission wheel, and when the first transmission wheel rotates, the transmission belt is used for driving the supporting plate where the second transmission wheel is located to rotate.

Preferably, the displacement sensor is arranged on the electric slider, and the angle sensors are respectively arranged on the second transmission wheel and the mounting shaft.

Preferably, the snowshoe assembly is further arranged on the supporting seat and used for wearing feet, the snowshoe assembly is fixed on a foot limiting sleeve in the middle of the supporting seat, a first binding belt assembly used for restraining feet is connected to the foot limiting sleeve, and the second binding belt assembly and the third binding belt assembly are identical in structure to the first binding belt assembly.

Preferably, the first bandage component is two restraining belts, and a magic tape is arranged on each restraining belt.

Preferably, a displacement mechanism is arranged in the mounting frame and used for changing and adjusting the position of the center of gravity of the experiencer, and the displacement mechanism comprises a displacement frame which is slidably mounted on the mounting frame;

the limiting cavity is formed in the middle of the displacement frame, a second swinging rod is arranged in the limiting cavity, a second limiting column is mounted at one end of the second swinging rod and used for being rotatably mounted at the corner part where the limiting cavity is located, and a first limiting column at the other end of the second swinging rod is used for sliding at the arc part where the limiting cavity is located;

the output shaft of the motor is provided with a power rod for driving the second swing rod to swing;

the plate body is characterized by also comprising a plurality of pressure sensors distributed at the bottom of the plate body.

Preferably, the two groups of handrail mechanisms are arranged on the plate body and are used for assisting the beginner in supporting; each group of handrail mechanisms comprises a fixed seat fixed on the plate body, an installation column is installed at the top of the fixed seat, and a second limiting block is fixed at the top of the installation column;

the movable ball is arranged at the top of the second limiting block, the outer wall of the movable ball is provided with limiting grooves, the limiting grooves are arranged in a cross shape, a slide way where one limiting groove is located can be used for the second limiting block to slide in a limiting mode, a first limiting block is arranged on a slide way where the other limiting groove is located in a limiting mode in a limiting sliding mode, a telescopic rod is fixedly arranged at the top of the first limiting block, and a handle used for holding is arranged at the top of the telescopic rod;

and the limiting bolt is arranged on the telescopic rod and used for locking the height of the handle.

Preferably, and run through the screw rod of erection column, second stopper, spacing groove and first stopper, be connected through the screw thread rotation between screw rod and the erection column.

Preferably, the method for constructing the center of gravity auxiliary support based on snowboarding applies the center of gravity auxiliary support teaching aid based on snowboarding, and the method comprises the following steps:

s1, restraining and attaching the first bandage component where the foot part limiting sleeve is located and the second bandage component where the supporting plate is located with the leg of the experiencer by utilizing the second bandage component arranged on the supporting plate and the third bandage component arranged on the first swinging rod;

s2, the auxiliary adjusting mechanism on the supporting seat is matched with the connecting rod sliding block mechanism, so that on one hand, the first swinging rod can swing, and on the other hand, the supporting plate where the second driving wheel is located can be further driven to deflect;

and S3, forming an exoskeleton support for the leg of the beginner by the action of the supporting plate and the first swinging rod, and assisting the leg of the beginner to do bending motion by mechanical control of the connecting rod and sliding block mechanism.

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

1. the invention utilizes the functions of the supporting plate and the first swinging rod to form an exoskeleton support for the leg of the beginner, utilizes the mechanical control of the connecting rod and sliding block mechanism to assist the leg of the beginner to do bending movement, has standard correcting function for the skiing action and the standing posture of the beginner, simultaneously utilizes the mechanical control to actively adjust the bending degree of the leg of the beginner, effectively avoids the adverse effect caused by the exceeding of the limit range of the bending action, further reduces the possibility of overturning the snowboard and improves the safety performance.

2. According to the invention, through the displacement mechanism arranged in the mounting frame and the plurality of pressure sensors distributed at the bottom of the plate body, the displacement frame horizontally slides in the mounting frame, so that the positions of the feet where the two supporting seats are located are changed, namely the positions of the two supporting seats relative to the plate body are changed, and the change of the gravity center position of single-plate skiing is further realized, thereby further improving the stability during skiing and reducing the risk of falling down during skiing.

3. According to the invention, through the arrangement of the handrail mechanism, when the handle is held by hand, the self balance can be ensured under the stable supporting action of the telescopic rod, and in the gradual learning process, the screw rod is rotated to enable the screw rod to spirally descend relative to the mounting column, when the mounting column is separated from the first limiting block, the first limiting block can slide left and right on the limiting groove, when the mounting column continues to descend, the telescopic rod can slide back and forth under the limiting action of the second limiting block, the movable range of the telescopic rod is gradually changed, so that a beginner can conveniently select according to the actual condition of the beginner, the dependence on the handrail mechanism is gradually reduced, and the learning efficiency is improved.

Drawings

FIG. 1 is a perspective view of a first perspective of the present invention;

FIG. 2 is a perspective view of a second embodiment of the present invention;

FIG. 3 is a perspective view of a third embodiment of the present invention;

FIG. 4 is a schematic top view of the present invention;

FIG. 5 is a schematic front view of the present invention;

FIG. 6 is a schematic view of the cross-sectional structure B-B of the present invention;

FIG. 7 is a schematic view of the cross-sectional structure of C-C of the present invention;

FIG. 8 is a first perspective view of the auxiliary adjustment mechanism of the present invention;

FIG. 9 is a perspective view of the auxiliary adjustment mechanism of the present invention from a second perspective;

FIG. 10 is a perspective view of the snowshoe assembly of the present invention;

FIG. 11 is a partial perspective view of the displacement mechanism of the present invention;

fig. 12 is a partial perspective view of the armrest mechanism of the present invention.

In the figure: 1. a plate body; 2. installing a frame; 3. a fixed seat; 4. a limiting groove; 5. mounting a column; 6. a first stopper; 7. a telescopic rod; 8. a displacement frame; 9. a supporting seat; 10. a foot limiting sleeve; 11. a first strap assembly; 12. a support; 13. a support plate; 14. a second strap assembly; 15. a drive belt; 16. a first swing lever; 17. a third strap assembly; 18. a limit bolt; 19. a limiting cavity; 20. a first limit post; 21. a second swing lever; 22. installing a shaft; 23. a second limit post; 24. a power rod; 25. a motor; 26. an electric slide rail; 27. an electric slider; 28. a first drive pulley; 29. a connecting rod; 30. a screw; 31. a movable ball; 32. a second limiting block; 33. a second transmission wheel; 34. a handle.

Detailed Description

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

The first embodiment is as follows:

referring to fig. 1 to 12, the present invention provides a technical solution: gravity center auxiliary stay teaching aid based on veneer skiing includes: a plate body 1; the two mounting frames 2 are arranged at the top of the plate body 1, and the supporting seat 9 is arranged on each mounting frame 2; the auxiliary adjusting mechanism is arranged on the supporting seat 9 and is used for assisting leg bending change of a beginner during single-board skiing; the auxiliary adjusting mechanism comprises two brackets 12 fixed on the supporting seat 9 and two first swinging rods 16 arranged on opposite surfaces of the brackets 12, and the two first swinging rods 16 are rotatably connected with the upper part of the bracket 12 through a mounting shaft 22; the device also comprises a second driving wheel 33 which is rotatably arranged at the top of the first swinging rod 16, and two supporting plates 13 are fixedly arranged on the outer wall of the second driving wheel 33; the connecting rod sliding block mechanism is arranged at the bottom of the first swinging rod 16 and is used for realizing deflection of the first swinging rod 16 and driving the supporting plate 13 to move; and a second strap assembly 14 disposed on the support plate 13 and a third strap assembly 17 disposed on the first swing lever 16 for restraining the leg of the occupant.

As shown in fig. 1, 2 and 3, when the second strap assembly 14 arranged on the support plate 13 and the third strap assembly 17 arranged on the first swing rod 16 are used to restrain and attach the first strap assembly 11 where the foot position-limiting sleeve 10 is arranged and the second strap assembly 14 where the support plate 13 is arranged to the leg of the experiencer through the auxiliary adjusting mechanism on the support base 9, and the connecting rod slider mechanism is arranged in cooperation, as shown in fig. 7, 8 and 9, on one hand, the swing of the first swing rod 16 can be realized, on the other hand, the support plate 13 where the second transmission wheel 33 is arranged can be further driven to deflect, at this time, the leg of the experiencer can be driven to do bending motion, in the process, the exoskeleton support for the leg of the beginner is formed by the action of the support plate 13 and the first swing rod 16, the bending motion is assisted by the mechanical control of the connecting rod slider mechanism, the device has the advantages that the device has the standard correcting effect on the skiing action and the standing posture of the beginner, simultaneously, the mechanical control can actively adjust the bending degree of the leg of the beginner, the adverse effect caused by the exceeding of the limit range of the bending action is effectively avoided, the possibility of overturning the snowboard is further reduced, and the safety performance is improved.

Further, the link slider mechanism includes an electric slide rail 26 disposed on the bracket 12, which is one of linear sliding tables, also commonly referred to as an electric cylinder in industry, a linear module, etc., and is formed by combining the linear sliding table and a motor drive, and the motor drive is used to drive the workpiece to automatically and linearly move, an electric slider 27 is slidably mounted on the electric slide rail 26, and a rotatable link 29 is mounted on a side wall of the electric slider 27; a first driving wheel 28 rotatably mounted at the bottom of the first swing rod 16, wherein one end of the connecting rod 29 far away from the electric slider 27 is fixedly connected with the end part where the first driving wheel 28 is located; and a transmission belt 15 which is in transmission connection between the second transmission wheel 33 and the first transmission wheel 28, wherein when the first transmission wheel 28 rotates, the transmission belt 15 is used for driving the supporting plate 13 on which the second transmission wheel 33 is positioned to rotate.

As shown in fig. 7, 8 and 9, an electric slide block 27 is slidably mounted on the electric slide rail 26, and a rotatable connecting rod 29 is mounted on a side wall of the electric slide block 27; and the first driving wheel 28 is rotatably installed at the bottom of the first swing rod 16, and the connecting rod 29 is fixedly connected with the first driving wheel 28, and the driving belt 15 is in driving connection between the second driving wheel 33 and the first driving wheel 28, when the electric slider 27 slides upwards in the electric slide rail 26, due to the connecting action of the connecting rod 29 and the swinging action of the first swing rod 16, the first swing rod 16 can be further driven to swing around the installation shaft 22, and meanwhile, the first driving wheel 28 where the connecting rod 29 is located rotates, and due to the driving connection of the driving belt 15, the supporting plate 13 where the second driving wheel 33 is located can be further driven to deflect, and at the moment, the legs of the experiencer can be driven to do bending motion.

Further, a displacement sensor provided on the power slider 27, and an angle sensor provided on the second transmission wheel 33 and the mounting shaft 22, respectively.

Through the displacement sensor that sets up on electronic slider 27, and set up the angle sensor on second drive wheel 33 and installation axle 22 respectively, through displacement sensor, record the position change of electronic slider 27, and the angle sensor on second drive wheel 33 and installation axle 22 can record the deflection volume of first swinging arms 16 and layer board 13, be convenient for record the change of shank bending volume in real time.

Further, still be provided with the snowshoe subassembly on the supporting seat 9 for the wearing of foot, the snowshoe subassembly is fixed at the foot stop collar 10 at supporting seat 9 middle part, is connected with the first bandage subassembly 11 that is used for the restraint of foot on the foot stop collar 10.

When in use, the snowshoe component arranged on the supporting seat 9 is matched with the first bandage component 11 connected on the foot limiting sleeve 10, so that the snowshoe can be used for wearing feet.

Furthermore, the first bandage assembly 11 is two restraint belts, and each restraint belt is provided with a magic tape, a magic tape or a squeaky buckle, has the function of a button, is a common connecting auxiliary material on clothes, and has the same structure as the first bandage assembly 11 on the two sides of a numerator bus, the second bandage assembly 14 and the third bandage assembly 17.

The magic tape is arranged on the restraint belt and is a primary and secondary magic tape, and when the primary and secondary magic tapes where the restraint belt is located are pasted, the binding action of the restraint belt can be achieved.

Example two:

furthermore, a displacement mechanism is arranged in the mounting frame 2 and used for changing and adjusting the gravity center position of the experiencer, and the displacement mechanism comprises a displacement frame 8 which is slidably mounted on the mounting frame 2; a limiting cavity 19 arranged in the middle of the displacement frame 8, a second swinging rod 21 arranged in the limiting cavity 19, a second limiting column 23 arranged at one end of the second swinging rod 21 and used for being rotatably arranged at the corner part where the limiting cavity 19 is located, and a first limiting column 20 arranged at the other end of the second swinging rod 21 and used for sliding at the arc part where the limiting cavity 19 is located; the motor 25 is fixed at the bottom of the mounting frame 2, and a power rod 24 is mounted on an output shaft of the motor 25 and used for driving the second swing rod 21 to swing; also comprises a plurality of pressure sensors distributed at the bottom of the plate body 1.

As shown in fig. 7 and 11, when the center of gravity of the snowboarding deviates, the value of the pressure sensor at the position of the center of gravity is increased by the displacement mechanism arranged inside the mounting frame 2 and the pressure sensors distributed at the bottom of the board body 1, the single chip microcomputer receives the signal and controls the motor 25 at the mounting frame 2 to operate, so as to drive the power rod 24 to rotate, because the second swing rod 21 is arranged inside the limit cavity 19, and the second limit post 23 is arranged at one end of the second swing rod 21 and is used for being rotatably mounted at the corner part at the limit cavity 19, and the first limit post 20 at the other end of the second swing rod 21 is used for sliding at the arc part at the limit cavity 19, when the power rod 24 rotates to drive the second swing rod 21 to swing, under the limit action of the limit cavity 19, the displacement frame 8 can be driven to horizontally slide inside the mounting frame 2, thereby make the foot at two supporting seats 9 place position change, through the change that two supporting seats 9 take place for plate body 1 position, the focus position that further realizes the veneer skiing changes to stability when further having improved skiing has reduced the risk of falling down when skiing.

Example three:

furthermore, two groups of handrail mechanisms are arranged on the plate body 1 and are used for assisting the beginner in supporting; each group of handrail mechanisms comprises a fixed seat 3 fixed on the plate body 1, a mounting column 5 is mounted at the top of the fixed seat 3, and a second limiting block 32 is fixed at the top of the mounting column 5; the movable ball 31 is arranged at the top of the second limiting block 32, the outer wall of the movable ball 31 is provided with limiting grooves 4, the limiting grooves 4 are arranged in a cross shape, a slide way where one limiting groove 4 is located can be used for limiting sliding of the second limiting block 32, a slide way where the other limiting groove 4 is located is provided with a first limiting block 6 in a limiting sliding mode, the top of the first limiting block 6 is fixedly provided with a telescopic rod 7, and the top of the telescopic rod 7 is provided with a handle 34 for holding; and a limit bolt 18 provided on the telescopic rod 7 for height locking of the handle 34.

As shown in fig. 1 and 12, through setting up two sets of handrail mechanisms on plate body 1, because the top of erection column 5 is fixed with second stopper 32, and set up the activity ball 31 at second stopper 32 top, and activity ball 31 outer wall has seted up spacing groove 4, cooperation spacing groove 4 is the cross setting, the slide at one of them spacing groove 4 place can supply the spacing slip of second stopper 32, the spacing slip of slide at another spacing groove 4 place has first stopper 6, including 6 top fixed mounting of first stopper have telescopic link 7, and the top of telescopic link 7 is provided with the handle 34 that is used for holding, the flexible regulation of telescopic link 7, can adjust the support height.

Further, and the screw rod 30 that runs through erection column 5, second stopper 32, spacing groove 4 and first stopper 6, rotate through the screw thread between screw rod 30 and the erection column 5 and be connected.

As shown in fig. 12, since the screw 30 penetrates the mounting post 5, the second limiting block 32, the limiting groove 4 and the first limiting block 6, and the screw 30 is rotatably connected with the mounting post 5 by a thread, when the user learns in the first step, the screw 30 completely penetrates the mounting post 5, the second limiting block 32, the limiting groove 4 and the first limiting block 6, the telescopic rod 7 is fixed to the mounting post 5, when the user holds the handle 34, the stable supporting function of the telescopic rod 7 can ensure self-balance, when the screw 30 is rotated to spirally descend relative to the mounting post 5 during the gradual learning process, when the mounting post 5 is separated from the first limiting block 6, the first limiting block 6 can slide left and right on the limiting groove 4, when the mounting post 5 continues to descend, the telescopic rod 7 can slide back and forth under the limiting function of the second limiting block 32, and the moving range of the telescopic rod 7 changes step by step, the beginner of being convenient for can select according to the actual conditions of self to reduce the dependence to handrail mechanism step by step, thereby improve learning efficiency.

Example four:

according to the construction method of the gravity center auxiliary support based on the snowboarding, the gravity center auxiliary support teaching aid based on the snowboarding is applied, and the construction method comprises the following steps:

s1, restraining and fitting the leg of the experient by the second bandage assembly 14 arranged on the supporting plate 13 and the third bandage assembly 17 arranged on the first swinging rod 16 when the first bandage assembly 11 where the foot position-limiting sleeve 10 is arranged and the second bandage assembly 14 where the supporting plate 13 is arranged;

s2, the auxiliary adjusting mechanism on the supporting seat 9 is matched with the connecting rod slider mechanism, so that on one hand, the first swinging rod 16 can swing, and on the other hand, the supporting plate 13 on which the second driving wheel 33 is positioned can be further driven to deflect;

and S3, forming an exoskeleton support for the leg of the beginner by the action of the supporting plate 13 and the first swinging rod 16, and assisting the leg of the beginner to do bending motion by mechanical control of the connecting rod and sliding block mechanism.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The detachable installation mode has various modes, for example, a mode of matching with a buckle through plugging, for example, a mode of connecting through a bolt, and the like.

The conception, the specific structure and the technical effects of the present invention are clearly and completely described above in connection with the embodiments and the accompanying drawings, so that the objects, the features and the effects of the present invention can be fully understood. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the coupling/connection relationships mentioned herein do not mean that the components are directly connected, but mean that a better coupling structure can be formed by adding or reducing coupling accessories according to specific implementation conditions.

The above embodiments are described in detail for the purpose of further illustrating the present invention and should not be construed as limiting the scope of the present invention, and the skilled engineer can make insubstantial modifications and variations of the present invention based on the above disclosure.

Claims

1. Gravity center auxiliary stay teaching aid based on veneer skiing, its characterized in that: the method comprises the following steps:

a plate body (1);

the plate comprises two mounting frames (2) arranged at the top of the plate body (1) and a supporting seat (9) arranged on each mounting frame (2);

the auxiliary adjusting mechanism is arranged on the supporting seat (9) and is used for assisting leg bending change of a beginner during single-board skiing;

the auxiliary adjusting mechanism comprises two supports (12) fixed on the supporting seat (9) and two first swinging rods (16) arranged on opposite surfaces of the supports (12), and the two first swinging rods (16) are rotatably connected with the upper parts of the supports (12) through mounting shafts (22);

the device also comprises a second transmission wheel (33) rotatably arranged at the top of the first swing rod (16), and two supporting plates (13) are fixedly arranged on the outer wall of the second transmission wheel (33);

the connecting rod sliding block mechanism is arranged at the bottom of the first swinging rod (16) and is used for realizing deflection of the first swinging rod (16) and driving the supporting plate (13) to move;

and a second strap assembly (14) arranged on the support plate (13) and a third strap assembly (17) arranged on the first swinging rod (16) for restraining the legs of the experiencer.

2. The snowboarding-based center-of-gravity assisted-support teaching aid of claim 1, wherein: the connecting rod sliding block mechanism comprises an electric sliding rail (26) arranged on the bracket (12), an electric sliding block (27) is arranged on the electric sliding rail (26) in a sliding manner, and a rotatable connecting rod (29) is arranged on the side wall of the electric sliding block (27);

a first transmission wheel (28) rotatably mounted at the bottom of the first swinging rod (16), wherein one end of the connecting rod (29) far away from the electric slider (27) is fixedly connected with the end part where the first transmission wheel (28) is located;

and the transmission belt (15) is in transmission connection between the second transmission wheel (33) and the first transmission wheel (28), and when the first transmission wheel (28) rotates, the transmission belt (15) is used for driving the supporting plate (13) where the second transmission wheel (33) is located to rotate.

3. The snowboarding-based center-of-gravity auxiliary support teaching aid of claim 2, wherein: a displacement sensor arranged on the electric slide block (27), and angle sensors respectively arranged on the second transmission wheel (33) and the mounting shaft (22).

4. The snowboarding-based center-of-gravity assisted-support teaching aid of claim 1, wherein: the snowshoe component is further arranged on the supporting seat (9) and used for wearing feet, the snowshoe component is fixed on a foot limiting sleeve (10) in the middle of the supporting seat (9), a first binding belt component (11) used for binding feet is connected to the foot limiting sleeve (10), and the second binding belt component (14) and the third binding belt component (17) are identical in structure to the first binding belt component (11).

5. The snowboarding-based center-of-gravity assisted-support teaching aid of claim 4, wherein: the first bandage component (11) is two restraint belts, and a magic tape is arranged on each restraint belt.

6. The snowboarding-based center-of-gravity assisted-support teaching aid of claim 1, wherein: a displacement mechanism is arranged in the mounting frame (2) and used for changing and adjusting the gravity center position of an experiencer, and the displacement mechanism comprises a displacement frame (8) which is slidably mounted on the mounting frame (2);

the limiting device comprises a limiting cavity (19) arranged in the middle of the displacement frame (8), a second swinging rod (21) is arranged in the limiting cavity (19), a second limiting column (23) is mounted at one end of the second swinging rod (21) and used for being rotatably mounted at a corner part where the limiting cavity (19) is located, and a first limiting column (20) at the other end of the second swinging rod (21) is used for sliding at an arc part where the limiting cavity (19) is located;

the motor (25) is fixed at the bottom of the mounting frame (2), and an output shaft of the motor (25) is provided with a power rod (24) for driving the second swing rod (21) to swing;

the plate body is characterized by further comprising a plurality of pressure sensors distributed at the bottom of the plate body (1).

7. The snowboarding-based center-of-gravity assisted-support teaching aid of claim 1, wherein: the two groups of handrail mechanisms are arranged on the plate body (1) and are used for assisting the beginner in supporting; each group of handrail mechanisms comprises a fixed seat (3) fixed on the plate body (1), the top of the fixed seat (3) is provided with a mounting column (5), and the top of the mounting column (5) is fixed with a second limiting block (32);

the movable ball (31) is arranged at the top of the second limiting block (32), the outer wall of the movable ball (31) is provided with a limiting groove (4), the limiting groove (4) is in a cross shape, a slide way where one limiting groove (4) is located can be used for the second limiting block (32) to slide in a limiting way, a first limiting block (6) is arranged on the slide way where the other limiting groove (4) is located in a limiting way and slides, a telescopic rod (7) is fixedly arranged at the top of the first limiting block (6), and a handle (34) used for holding is arranged at the top of the telescopic rod (7);

and a limit bolt (18) arranged on the telescopic rod (7) and used for locking the height of the handle (34).

8. The snowboarding-based center-of-gravity assisted-support teaching aid of claim 7, wherein: and the screw rod (30) penetrates through the mounting column (5), the second limiting block (32), the limiting groove (4) and the first limiting block (6), and the screw rod (30) is rotatably connected with the mounting column (5) through threads.

9. The construction method of the gravity center auxiliary support based on single board skiing is characterized in that: the snowboarding-based center-of-gravity auxiliary support teaching aid applied to the method as claimed in claim 1, wherein the construction method comprises the following steps:

s1, restraining and attaching the first bandage assembly (11) where the foot limiting sleeve (10) is located and the second bandage assembly (14) where the supporting plate (13) is located with the leg of the experiencer by utilizing the second bandage assembly (14) arranged on the supporting plate (13) and the third bandage assembly (17) arranged on the first swinging rod (16);

s2, the auxiliary adjusting mechanism on the supporting seat (9) is matched with the connecting rod sliding block mechanism, so that on one hand, the first swinging rod (16) can swing, and on the other hand, the supporting plate (13) where the second driving wheel (33) is located can be further driven to deflect;

and S3, the action of the supporting plate (13) and the first swinging rod (16) is utilized to form an exoskeleton support for the leg of the beginner, and the mechanical control of the connecting rod-sliding block mechanism is utilized to assist the leg of the beginner to do bending motion.