Multi-angle launching device for balloon volleyball training

Abstract

The invention belongs to the field of balloon volleyball launching, and provides a balloon volleyball training multi-angle launching device which comprises a base, a rotating disc is rotatably mounted on the upper surface of the base, a supporting rod is fixedly mounted on the upper surface of the rotating disc, a supporting disc is hinged to the upper surface of the supporting rod, and a launching cylinder is hinged to the upper surface of the supporting disc; an air cylinder is fixedly installed on the side wall of the launching cylinder, an electric hydraulic rod is fixedly installed on the upper surface of the rotating disc, a supporting column is fixedly installed on the upper surface of the electric hydraulic rod, an adjusting cylinder is rotationally arranged on the side wall of the launching cylinder, and an adjusting ball is arranged in the adjusting cylinder; the launching direction of the launching cylinder can be conveniently adjusted through the arranged rotating disc, the launching height of the launching cylinder can be conveniently adjusted through the arranged electric hydraulic rod and the like, meanwhile, through the arranged adjusting ball structure, an adjusting ball is in contact with a ball body in a rolling friction mode, multi-axis composite rotation can be achieved, and the launching cylinder can be more stably launched. Such as upward rotation, lateral rotation and the combination thereof, a more real competition ball path is simulated.

Description

Technical Field

[0001] The invention belongs to the field of air volleyball launching, in particular to a multi-angle launching device for air volleyball training. Background Art

[0002] Air volleyball uses a lightweight polyurethane foam ball (weight 120-150 grams, diameter 75-80 centimeters). By increasing the volume and reducing the mass to reduce the flight inertia, combined with optimized net height (2.1 meters for men / 1.9 meters for women) and lenient rules (such as allowing the ball to stop briefly), the risk of sports injuries and technical barriers are significantly reduced. At the same time, the field size is reduced (6×12 meters) and the scoring rules are simplified to meet the needs of users of different ages and skill levels, filling the gap in popular team ball sports.

[0003] A Chinese invention patent with announcement number CN113813583A discloses a multi-angle launching device for air volleyball training, which includes: a frame, a hitting device and an angle adjustment device; the hitting device includes a barrel and a telescopic structure, the barrel is fixed on the frame, the fixed end of the telescopic structure is fixed to the bottom surface of the barrel, and the movable end of the telescopic structure faces the opening of the barrel; the angle adjustment device, the inner wall of the first annular body is fixedly connected to the outer ring of the bearing, the inner ring of the bearing is fixedly connected to the outer wall of the barrel body, the outer wall of the outer wall of the barrel body is also fixedly connected to the motor, the motor is connected to the controller, the motor output shaft is fixedly connected to the gear, the gear meshes with the gear ring, and the inner wall of the gear ring is fixed to the outer wall of the first annular body.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: although a single limit rod can change the rotation direction of the volleyball during use, it can only produce rotation in a single direction, which makes it difficult to simulate the compound rotation ball path in actual combat. At the same time, the limit rod and the ball are in sliding friction, resulting in a large loss of kinetic energy.

[0005] Therefore, those skilled in the art have proposed a multi-angle launching device for air volleyball training to solve the problems raised by the background technology. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a multi-angle launching device for air volleyball training, so as to solve the problem in the prior art that although a single limiting rod can change the rotation direction of the volleyball, it can only produce rotation in a single direction and it is difficult to simulate the compound rotation ball path in actual combat.

[0007] A multi-angle launching device for air volleyball training comprises a base, a turntable is rotatably mounted on the upper surface of the base, a support rod is fixedly mounted on the upper surface of the turntable, a support plate is hingedly mounted on the upper surface of the support rod, a launching tube is hingedly mounted on the upper surface of the supporting plate, and a cylinder is fixedly mounted on the side wall of the launching tube; An electric hydraulic rod is fixedly mounted on the upper surface of the rotating disk, a support column is fixedly mounted on the upper surface of the electric hydraulic rod, an arc groove matching the support column is opened on the lower surface of the launching tube, and the support column extends into the arc groove; An adjusting cylinder is rotatably arranged on the side wall of the launching cylinder, and an adjusting ball is arranged inside the adjusting cylinder.

[0008] Preferably, a fixing plate is fixedly mounted on the outer surface of the launching tube, a driving motor is fixedly mounted on the side wall of the fixing plate, an output end of the driving motor is fixedly connected to a rotating rod via a coupling, a gear is fixedly mounted on one end of the rotating rod, a gear is fixedly mounted on the outer surface of the adjusting tube, and the gear is meshed with the gear ring.

[0009] Preferably, a sleeve rod is fixedly installed in the adjustment cylinder, an insertion rod is slidably provided on the lower surface of the sleeve rod, a spherical mounting sleeve is fixedly installed on the lower surface of the insertion rod, an adjustment ball is rounably installed in the spherical mounting sleeve, and the adjustment ball can automatically roll in the spherical mounting sleeve.

[0010] Preferably, a mounting groove is provided on the side wall of the insertion rod, a clamping block is slidably arranged in the mounting groove, a clamping hole matching the clamping block is provided on the outer side of the sleeve rod, the clamping block passes through the clamping hole and is slidably arranged therewith, a compression spring is provided in the mounting groove, and both ends of the compression spring are respectively connected to the side wall of the clamping block and the inner wall of the mounting groove.

[0011] Preferably, the upper side wall of the block is provided with an inclined portion, and the lower side wall is provided with a horizontal portion.

[0012] Preferably, the upper surface of the launching tube is fixedly connected to a volleyball placing tube.

[0013] Preferably, a ball placing bucket is fixedly mounted on the upper surface of the volleyball placing tube, and the radius of the ball placing bucket gradually decreases from top to bottom and eventually becomes the same as the radius of the volleyball placing tube.

[0014] Preferably, the side wall of the volleyball placement tube is slidably provided with a first sliding column and a second sliding column, one end of the first sliding column and the second sliding column extends into the volleyball placement tube and is respectively fixedly installed with a first blocking rod and a second blocking rod.

[0015] Preferably, a pull plate is fixedly mounted on the side walls of the first slide column and the second slide column, and a return spring is sleeved on the outer side of the first slide column and the second slide column, and both ends of the return spring are respectively connected to the side wall of the pull plate and the side wall of the volleyball placement tube.

[0016] Preferably, a pull ring is fixedly mounted on the side wall of the pull plate.

[0017] Through the above technical solution, Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can adjust the firing direction of the launch tube by means of a turntable, and can adjust the firing height of the launch tube by means of an electric hydraulic rod, etc., and at the same time, a freely rotatable adjusting ball structure is provided, and the adjusting ball contacts the sphere in a rolling friction manner, which can not only realize multi-axis compound rotation, such as topspin, side spin and a combination thereof, and simulate a more realistic game ball path, but also greatly reduce energy loss, ensure the serving speed and rotation stability, and at the same time, the wear-resistant design and flexible contact of the adjusting ball effectively reduce mechanical wear and interference with the flight trajectory of the sphere, extend the service life of the device, and improve the landing point accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a front view of the present invention; Figure 3 is a side view of the present invention; Figure 4 It is a side view of the launch tube in the present invention; Figure 5 It is a schematic diagram of the structure of the regulating ball in the present invention; Figure 6 It is a structural schematic diagram of the card block in the present invention; Figure 7 It is a cross-sectional view of the volleyball placement tube in the present invention.

[0019] In the figure: 1. Base; 2. Turntable; 3. Support rod; 4. Support plate; 5. Launch tube; 6. Cylinder; 7. Electric hydraulic rod; 8. Support column; 9. Arc groove; 10. Adjustment tube; 11. Adjustment ball; 12. Fixed plate; 13. Drive motor; 14. Turntable; 15. Gear; 16. Gear ring; 17. Sleeve rod; 18. Insert rod; 19. Spherical mounting sleeve; 20. Mounting groove; 21. Block; 22. Compression spring; 23. Inclined portion; 24. Horizontal portion; 25. Volleyball placement tube; 26. Ball placement bucket; 27. First slide column; 28. Second slide column; 29. ​​First stop rod; 30. Second stop rod; 31. Pull plate; 32. Return spring; 33. Pull ring. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0021] Embodiment 1: As shown in the attached Figure 1 To Attachment Figure 3As shown: The present invention provides a multi-angle launching device for air volleyball training, comprising a base 1, the base 1 serves as the supporting foundation of the entire device to ensure stability, a turntable 2 is rotatably installed on the upper surface of the base 1, a driving device is installed inside the base 1, and is used to drive the turntable 2 to rotate, and can realize horizontal rotation, and is used to adjust the launching direction, a support rod 3 is fixedly installed on the upper surface of the turntable 2, and a support plate 4 is hingedly arranged on the upper surface of the support rod 3, and the support rod 3 and the support plate 4 are hingedly connected to form a multi-angle adjustment structure, so that a launching tube 5 can adjust the pitch angle, a launching tube 5 is hingedly arranged on the upper surface of the support plate 4, and a cylinder 6 is fixedly installed on the side wall of the launching tube 5, and the launching tube 5 is a launching channel for the air volleyball, and a cylinder 6 is installed on the side wall thereof, and is used to provide a hitting power for launching the air volleyball; An electric hydraulic rod 7 is fixedly mounted on the upper surface of the turntable 2, a support column 8 is fixedly mounted on the upper surface of the electric hydraulic rod 7, an arc groove 9 matching with the support column 8 is opened on the lower surface of the launch tube 5, the support column 8 extends into the arc groove 9, and the electric hydraulic rod 7 cooperates with the arc groove 9 on the lower surface of the launch tube 5 to achieve height and angle adjustment of the launch tube 5; An adjusting cylinder 10 is rotatably provided on the side wall of the launching cylinder 5 , and an adjusting ball 11 is provided inside the adjusting cylinder 10 .

[0022] As can be seen from the above, when in use, after placing the air volleyball into the launching tube 5, the driving device inside the base 1 is started to drive the turntable 2 to rotate, thereby adjusting the horizontal direction of the launching tube 5. When launching, the electric hydraulic rod 7 is started to drive the support column 8 to move up and down to adjust the pitch angle of the launching tube 5. After the angle adjustment is completed, the cylinder 6 is started, and the cylinder 6 pushes the air volleyball through the launching tube 5 for launching. When launching, the adjusting ball 11 can realize universal rotation, and can simultaneously apply a compound rotation of side spin plus spin or back spin. When the volleyball is launched, it contacts the air volleyball through rolling friction, giving the ball multi-axis rotation. In addition, the use of the adjusting ball 11 structure also greatly reduces energy loss. Compared with the traditional sliding friction method, rolling friction has a smaller friction coefficient, so it can reduce the kinetic energy loss during the serve and ensure the serve speed and rotation stability.

[0023] Embodiment 2: As shown in the attached Figure 2 To Attachment Figure 5As shown: This embodiment is basically the same as the previous embodiment, except that a fixed plate 12 is fixedly installed on the outer surface of the launching tube 5, a driving motor 13 is fixedly installed on the side wall of the fixing plate 12, an output end of the driving motor 13 is fixedly connected to a rotating rod 14 through a coupling, a gear 15 is fixedly installed on one end of the rotating rod 14, a ring gear 16 is fixedly sleeved on the outer surface of the adjusting tube 10, the gear 15 is meshed with the ring gear 16, the driving motor 13 drives the rotating rod 14 and the gear 15 to rotate, the gear 15 is meshed with the ring gear 16, and when the ring gear 16 rotates, the adjusting tube 10 is driven to rotate, the gear 15 and the ring gear 16 meshing structure has a higher transmission efficiency, avoids the problem of slippage in traditional belt transmission, and thus the position of the internal adjusting ball 11 is adjusted in real time.

[0024] Preferably, a sleeve rod 17 is fixedly installed in the adjustment tube 10, and an insertion rod 18 is slidably provided on the lower surface of the sleeve rod 17. A spherical mounting sleeve 19 is fixedly installed on the lower surface of the insertion rod 18. An adjusting ball 11 is rollingly installed in the spherical mounting sleeve 19. The adjusting ball 11 can automatically roll in the spherical mounting sleeve 19. The adjusting ball 11 rollingly installed in the spherical mounting sleeve 19 can realize universal rotation, and can simultaneously apply a compound rotation of side spin plus top spin or back spin. When the volleyball is launched, it contacts the air volleyball through rolling friction, giving the ball multi-axis rotation. In addition, the use of the adjusting ball 11 structure also greatly reduces energy loss. Compared with the traditional sliding friction method, rolling friction has a smaller friction coefficient, so it can reduce the kinetic energy loss during the serve and ensure the serve speed and rotation stability.

[0025] Furthermore, the surface of the adjusting ball 11 is made of highly wear-resistant silicone to improve the wear resistance of the adjusting ball 11. At the same time, during the contact with the volleyball, the dynamic friction coefficient is reduced to ensure smooth rotation start-up, effectively reduce mechanical wear and interference with the flight trajectory of the ball, and extend the service life of the device.

[0026] As can be seen from the above, when using, first adjust the horizontal launch direction and pitch launch angle of the launch tube 5 respectively through the turntable 2 and the electric hydraulic rod 7 according to the training needs. After the adjustment is completed, put the air volleyball into the launch tube 5. At this time, the adjustment ball 11 is free to roll in the adjustment tube 10 through the spherical mounting sleeve 19. Its surface is made of high wear-resistant silicone material to ensure wear resistance and smooth rolling when in contact with the air volleyball. When the cylinder 6 is started and pushes the air volleyball through the launch tube 5, the adjustment ball 11 and the air volleyball will have rolling friction, thereby giving the air volleyball multi-axis compound rotation, such as topspin, side spin and their combination. This compound rotation simulates a more realistic ball path in actual combat, improving the pertinence and effectiveness of training.

[0027] At the same time, the driving motor 13 drives the gear ring 16 and the adjustment cylinder 10 to rotate through the rotating rod 14 and the gear 15, thereby adjusting the position of the adjustment ball 11 in the spherical mounting sleeve 19. This adjustment method is flexible and convenient, and the position and angle of the adjustment ball 11 can be adjusted in real time according to training needs to meet the needs of different training scenarios.

[0028] Embodiment 3: As shown in the attached Figure 3 To Attachment Figure 7 As shown: on the basis of the first embodiment, the side wall of the insertion rod 18 is provided with a mounting groove 20, and a clamping block 21 is slidably arranged in the mounting groove 20. A clamping hole matching the clamping block 21 is provided on the outer side of the sleeve rod 17, and the clamping block 21 passes through the clamping hole and is slidably arranged therewith. A compression spring 22 is arranged in the mounting groove 20, and the two ends of the compression spring 22 are respectively connected to the side wall of the clamping block 21 and the inner wall of the mounting groove 20. This arrangement can facilitate the rapid disassembly and replacement of the insertion rod 18, and is used to replace different types of adjustment balls 11 as needed. The upper side wall of the clamping block 21 is provided with an inclined portion 23, and the lower side wall is provided with a horizontal portion 24. This arrangement can improve the installation efficiency of the insertion rod 18, and during the insertion process The inclined portion 23 of the side wall of the block 21 first contacts the side wall of the sleeve rod 17, and is squeezed by the sleeve rod 17 to press the block 21 into the installation groove 20. When inserted to the end of the sleeve rod 17, the block 21 slides to the through hole opened in the side wall of the sleeve rod 17, and the block 21 is driven to extend outward by the resilience of the compression spring 22. At this time, the horizontal surface of the block 21 contacts the side wall of the through hole, and the insertion rod 18 is quickly locked and fixed, thereby realizing the rapid fixed installation of the spherical installation sleeve 19 and the adjusting ball 11. When the adjusting ball 11 needs to be quickly disassembled, repaired and replaced, the block 21 is pressed into the installation groove 20, and the insertion rod 18 can be directly pulled out to perform rapid disassembly and replacement.

[0029] Preferably, the upper surface of the launching tube 5 is fixedly connected to a volleyball placing tube 25, and a ball placing bucket 26 is fixedly installed on the upper surface of the volleyball placing tube 25. The radius of the ball placing bucket 26 gradually decreases from top to bottom and eventually becomes the same as the radius of the volleyball placing tube 25. The volleyball to be launched can be placed into the volleyball placing tube 25, and the ball placing bucket 26 can facilitate the ball to fall into automatically. The tapered design of the ball placing bucket 26 allows the ball to be automatically centered, and cooperates with the placing tube to realize the function of continuous launching.

[0030] Furthermore, the side wall of the volleyball placement tube 25 is slidingly provided with a first sliding column 27 and a second sliding column 28, one end of the first sliding column 27 and the second sliding column 28 extends into the volleyball placement tube 25 and is respectively fixedly installed with a first blocking rod 29 and a second blocking rod 30, and the side walls of the first sliding column 27 and the second sliding column 28 are both fixedly installed with a pull plate 31, and the outer sides of the first sliding column 27 and the second sliding column 28 are both sleeved with a return spring 32, and the two ends of the return spring 32 are respectively connected to the side walls of the pull plate 31 and the side walls of the volleyball placement tube 25, and the side wall of the pull plate 31 is fixedly installed with a pull ring 33. The set pull ring 33 can facilitate the quick pulling of the blocking rod, and the set return spring 32 can be used to reset the first sliding column 27 and the second sliding column 28 after pulling them.

[0031] As can be seen from the above, when in use, a ball placing bucket 26 is fixedly installed on the upper surface of the volleyball placing tube 25, and its radius gradually decreases from top to bottom and eventually becomes the same as the radius of the volleyball placing tube 25. This tapered design allows the ball to automatically fall into the volleyball placing tube 25 and be placed in the center. When the volleyball needs to be launched, first pull the second baffle rod 30, and the volleyball falls from the bottom of the volleyball placing tube 25 into the launching tube 5, and then pull the first baffle rod 29 to make the volleyball fall into the waiting area for launching between the first baffle rod and the second baffle rod 30. When launching is required, continue to pull the second baffle rod 30, and repeat this process to achieve rapid and continuous launching.

[0032] When it is necessary to quickly disassemble, repair and replace the adjusting ball 11, after pressing the blocks 21 on both sides of the sleeve rod 17, the insertion rod 18 can be directly pulled out to quickly disassemble and replace it. During installation, the insertion rod 18 is inserted into the sleeve rod 17. During the insertion process, the inclined portion 23 of the side wall of the block 21 first contacts the side wall of the sleeve rod 17, and the block 21 is pressed into the installation groove 20 by the sleeve rod 17. When inserted to the end of the sleeve rod 17, the block 21 slides to the through hole opened in the side wall of the sleeve rod 17. The block 21 is driven outward by the rebound force of the compression spring 22. At this time, the horizontal surface of the block 21 contacts the side wall of the through hole, and the insertion rod 18 is quickly locked and fixed, thereby realizing the quick fixed installation of the spherical installation sleeve 19 and the adjusting ball 11, which can be convenient for quickly replacing and adjusting the type and radius size of the adjusting ball 11 according to needs.

[0033] The embodiments of the present invention are given for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Those skilled in the art can change, modify, replace and modify the above embodiments within the scope of the present invention. In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. The meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0037] In the drawings of the embodiments disclosed in the present invention, only the structures involved in the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-angle launching device for air volleyball training, characterized in that: The invention comprises a base (1), a turntable (2) being rotatably mounted on the upper surface of the base (1), a support rod (3) being fixedly mounted on the upper surface of the turntable (2), a support plate (4) being hingedly mounted on the upper surface of the support rod (3), a launch tube (5) being hingedly mounted on the upper surface of the support plate (4), and a cylinder (6) being fixedly mounted on the side wall of the launch tube (5); An electric hydraulic rod (7) is fixedly mounted on the upper surface of the rotating disk (2), a support column (8) is fixedly mounted on the upper surface of the electric hydraulic rod (7), an arc-shaped groove (9) matching the support column (8) is formed on the lower surface of the launching tube (5), and the support column (8) extends into the arc-shaped groove (9); An adjustment cylinder (10) is rotatably provided on the side wall of the launching cylinder (5), and an adjustment ball (11) is provided inside the adjustment cylinder (10).

2. A multi-angle launching device for air volleyball training as claimed in claim 1, characterized in that: A fixing plate (12) is fixedly mounted on the outer surface of the launching tube (5), a driving motor (13) is fixedly mounted on the side wall of the fixing plate (12), an output end of the driving motor (13) is fixedly connected to a rotating rod (14) via a coupling, a gear (15) is fixedly mounted on one end of the rotating rod (14), and a gear ring (16) is fixedly sleeved on the outer surface of the adjusting tube (10), the gear (15) being meshed with the gear ring (16).

3. A multi-angle launching device for air volleyball training as claimed in claim 2, characterized in that: A sleeve rod (17) is fixedly mounted in the adjustment cylinder (10), an insertion rod (18) is slidably mounted on the lower surface of the sleeve rod (17), a spherical mounting sleeve (19) is fixedly mounted on the lower surface of the insertion rod (18), an adjustment ball (11) is rounably mounted in the spherical mounting sleeve (19), and the adjustment ball (11) can automatically roll in the spherical mounting sleeve (19).

4. A multi-angle launching device for air volleyball training as claimed in claim 3, characterized in that: The side wall of the insertion rod (18) is provided with a mounting groove (20), a clamping block (21) is slidably arranged in the mounting groove (20), a clamping hole matching the clamping block (21) is provided on the outer side of the sleeve rod (17), the clamping block (21) passes through the clamping hole and is slidably arranged therewith, a compression spring (22) is arranged in the mounting groove (20), and two ends of the compression spring (22) are respectively connected to the side wall of the clamping block (21) and the inner wall of the mounting groove (20).

5. A multi-angle launching device for air volleyball training as claimed in claim 4, characterized in that: The upper side wall of the block (21) is provided with an inclined portion (23), and the lower side wall is provided with a horizontal portion (24).

6. A multi-angle launching device for air volleyball training as claimed in claim 1, characterized in that: The upper surface of the launching tube (5) is fixedly connected to a volleyball placement tube (25).

7. A multi-angle launching device for air volleyball training as claimed in claim 6, characterized in that: A ball placing bucket (26) is fixedly mounted on the upper surface of the volleyball placing tube (25), and the radius of the ball placing bucket (26) gradually decreases from top to bottom and eventually becomes the same as the radius of the volleyball placing tube (25).

8. A multi-angle launching device for air volleyball training as claimed in claim 7, characterized in that: A first sliding column (27) and a second sliding column (28) are slidably provided on the side wall of the volleyball placement tube (25); one end of the first sliding column (27) and the second sliding column (28) extend into the volleyball placement tube (25) and are respectively fixedly mounted with a first blocking rod (29) and a second blocking rod (30).

9. A multi-angle launching device for air volleyball training as claimed in claim 8, characterized in that: A pull plate (31) is fixedly mounted on the side walls of the first slide column (27) and the second slide column (28); a return spring (32) is sleeved on the outer sides of the first slide column (27) and the second slide column (28); two ends of the return spring (32) are respectively connected to the side wall of the pull plate (31) and the side wall of the volleyball placement tube (25); and a pull ring (33) is fixedly mounted on the side wall of the pull plate (31).

10. The multi-angle launching device for air volleyball training as claimed in claim 3, characterized in that: The surface of the regulating ball (11) is made of highly wear-resistant silica gel.

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