CN113018815A - Portable intelligent tennis ball serving machine - Google Patents
Portable intelligent tennis ball serving machine Download PDFInfo
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- CN113018815A CN113018815A CN202110363705.XA CN202110363705A CN113018815A CN 113018815 A CN113018815 A CN 113018815A CN 202110363705 A CN202110363705 A CN 202110363705A CN 113018815 A CN113018815 A CN 113018815A
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- box body
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B69/00—Training appliances or apparatus for special sports
- A63B69/40—Stationarily-arranged devices for projecting balls or other bodies
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B69/00—Training appliances or apparatus for special sports
- A63B69/38—Training appliances or apparatus for special sports for tennis
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- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
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Abstract
The invention discloses a portable intelligent tennis ball serving machine which comprises a box body, wherein a serving cavity is formed in the box body, a lower ball hole communicated with the serving cavity is formed in the top of the box body, a serving hole communicated with the serving cavity is formed in the side wall of one side of the box body, a serving assembly and a strap assembly for carrying the box body are mounted on the box body, the strap assembly consists of two strap bodies, and two ends of the two strap bodies are fixed to the side wall of the same side of the box body. In the structure of the tennis pitching machine, the length of the belt body is large, so that the belt body is convenient to retract in the normal use process of the tennis pitching machine, a user only needs to wind the belt body around the movable rod and then rotate the threaded rod, and the movable rod is in threaded connection with the threaded rod, and the guide rod is in sliding fit with the movable rod, so that the movable rod moves upwards along the vertical direction, the movable rod conveniently pulls the belt body upwards and straightens the belt body, and the probability of safety accidents caused by the loose state of the belt body is reduced; and the difficulty and labor intensity of moving the tennis ball serving machine by a user in the process of going upstairs and downstairs are reduced.
Description
Technical Field
The invention belongs to the technical field of sports equipment, and particularly relates to a portable intelligent tennis ball serving machine.
Background
Tennis ball is a ball game project with resistance and appreciation, and is popular among multiple sports enthusiasts. In the course of physical education and teaching, tennis training is also used as a physical education item, and in order to better train the catching skill of students, a tennis service robot is usually used in the course of tennis training. The common tennis ball serving machine is a double-wheel type serving machine, a roller type serving machine uses wheels for serving balls, the two wheels rotate at high speed and in opposite rotating directions, the wheels are driven by a motor, the gap between the wheels is slightly smaller than the diameter of a tennis ball, and when the tennis ball rolls into the gap between the two wheels from a sliding rail, the tennis ball is quickly screwed out by virtue of the friction force of the wheels and the tennis ball
The existing tennis ball serving machine has some defects, such as the weight of the tennis ball serving machine is large, the bottom of the base is usually provided with the roller, so that a user can push the tennis ball serving machine to a court, but when the user needs to carry a stair with more steps, the user can only lift the tennis ball serving machine with two hands, and the labor intensity of the user is increased.
Disclosure of Invention
The invention aims to provide a portable intelligent tennis ball serving machine which is small in size and convenient to carry and solves the problem of difficulty in going up and down stairs of the tennis ball serving machine.
In order to achieve the above object, according to one aspect of the present invention, a portable intelligent tennis ball serving machine is provided, which comprises a box body, wherein a service cavity is arranged inside the box body, a lower ball hole communicated with the service cavity is arranged at the top of the box body, a service hole communicated with the service cavity is arranged on a side wall of one side of the box body, a service assembly and a strap assembly for carrying the box body are arranged on the box body, the strap assembly is located on one side of the service cavity far away from the service hole, the strap assembly is composed of two strap bodies, and two ends of the two strap bodies are both fixed on the side wall of the same side of the box body; still set up in the box and deposit the chamber, keep away from on the lateral wall of service hole one side on the box and set up and deposit the handle hole of chamber intercommunication, deposit the intracavity and install the rolling subassembly that is used for the rolling area body, the rolling subassembly including rotate install in the threaded rod at box top, with deposit the fixed guide bar of intracavity roof and install in the movable rod of depositing the intracavity, threaded rod upper end height is greater than the height of box upper surface, the threaded rod lower extreme runs through deposits the intracavity roof and extends to and deposits the intracavity, the threaded rod run through the movable rod and with movable rod threaded connection, the guide rod run through the movable rod and with the movable rod cooperation of sliding.
According to the invention, the upper end of the threaded rod is provided with a driving assembly, and the driving assembly comprises a rotary disc fixed with the upper end of the threaded rod and an operating rod fixed with the upper surface of the rotary disc.
According to the invention, the box body is provided with the protection assembly, the protection assembly comprises a sleeve fixed with the upper surface of the box body and a top cap sleeved on the sleeve and in threaded connection with the sleeve, and the turntable and the operating rod are both positioned in the sleeve.
According to the invention, a cleaning hole is formed in the side wall of the box body, which is far away from the serving hole, and the inner bottom wall of the cleaning hole is flush with the inner bottom wall of the storage cavity.
According to the invention, the service assembly comprises a lower ball tube fixed on the upper surface of the box body, the lower end opening of the lower ball tube corresponds to and is communicated with the upper end opening of the lower ball hole, the service assembly also comprises a ball storage hopper fixed and communicated with the upper end opening of the lower ball tube, an electromagnetic valve arranged on the lower ball tube and used for controlling the on-off of the lower ball tube, a ball channel fixed on the inner wall of the lower ball hole, a rotating rod rotatably arranged on the inner wall of a service cavity and a service wheel fixedly sleeved on the rotating rod, the rotating rod is provided with two rotating rods and symmetrically arranged about the lower end opening of the ball channel, the side wall of the box body adjacent to the service hole is provided with an installation opening, the two rotating rods both penetrate through the side wall of the installation opening and are rotatably connected, the inner wall of the installation opening is fixedly provided with a storage battery and a motor, the storage battery is electrically connected with the battery, two all fixed the cover is equipped with the gear on the dwang, and two gear engagement.
According to the invention, the controller is fixed on the upper surface of the box body and is used for controlling the opening and closing of the electromagnetic valve and the motor.
According to the invention, a voice recognizer is fixed on the side wall of the box body, and the voice recognizer is electrically connected with the controller.
According to the invention, the bottom surface of the box body is fixedly provided with the air cylinder and the supporting leg, the air cylinder is positioned at the position, close to the edge of the box body, of the bottom of the box body, the piston rod of the air cylinder vertically extends downwards, and the bottom of the supporting leg is fixedly provided with the roller with the foot brake.
The invention has the beneficial effects that:
1) in the structure of the tennis pitching machine, the length of the belt body is large, in the normal use process of the tennis pitching machine, a user only needs to wind the belt body around the movable rod and then rotate the threaded rod, as the movable rod is in threaded connection with the threaded rod, the guide rod is in sliding fit with the movable rod, so that the movable rod moves upwards along the vertical direction, the movable rod can conveniently pull the belt body upwards and straighten the belt body, and the probability of safety accidents caused by the loose state of the belt body is reduced.
2) When the tennis pitching machine needs to be carried to go upstairs and downstairs, a user can back up the box body only through the two belt bodies on the box body, so that the difficulty and labor intensity of the user in moving the tennis pitching machine up and down the stairs are reduced, and the physical consumption and the pain feeling of arms of the user in the moving process are reduced.
3) The voice recognizer has a simple voice recognition function, and when the voice recognizer recognizes a service instruction, the controller controls the electromagnetic valve and the motor to be opened, so that the tennis ball serving machine can conveniently perform service operation, and the intelligence of the tennis ball serving machine is improved.
Drawings
FIG. 1 illustrates an overall structural schematic diagram of the portable intelligent tennis ball serving machine of the present invention;
FIG. 2 illustrates a schematic structural view of a service cavity of the portable intelligent tennis ball serving machine of the present invention;
FIG. 3 illustrates a schematic structural view of the winding assembly of the portable intelligent tennis ball serving machine of the present invention;
fig. 4 illustrates an enlarged schematic view at a in fig. 3.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be emphasized that the specific embodiments described herein are merely illustrative of the invention, are some, not all, and therefore do not limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1-4, the portable intelligent tennis ball serving machine of the present invention comprises a box 1, a serving assembly 2, a controller 11, a voice recognizer 12, a cylinder 13, a strap assembly 3, a winding assembly 4, a driving assembly 5 and a protection assembly 6. The box body 1 is a cuboid structure, four support legs 14 are fixed on the bottom surface of the box body, the four support legs 14 are distributed in a rectangular array, and a roller 141 with a foot brake is fixed at the bottom of each support leg 14, so that a user can fix the box body 1 in the using process conveniently.
As shown in fig. 1-3, a service cavity 15 with a rectangular cross section is formed in the box body 1, a lower ball hole 16 communicated with the service cavity 15 is formed in the upper surface of the box body 1, a service hole 8 communicated with the service cavity 15 is formed in the side wall of one side of the box body 1, a mounting opening 17 is formed in the side wall of the box body 1 adjacent to the service hole 8, and a side door 171 of the closed mounting opening 17 is hinged to the side wall of the mounting opening 17.
As shown in fig. 2 to 3, the service module 2 is mounted on the housing 1, and the service module 2 includes a lower ball tube 21, a ball storage 22, a solenoid valve 23, a ball path 24, a rotating rod 25, a service wheel 26, a battery 27, a motor 28, and a gear 29. The lower ball tube 21 is a vertically arranged round tube structure, the lower end opening of the lower ball tube corresponds to the upper end opening of the lower ball hole 16, the lower end opening of the lower ball tube 21 is communicated with the upper end opening of the lower ball hole 16, and the lower ball tube 21 can be used for a tennis ball to fall freely. The ball storage hopper 22 is of a funnel-shaped structure, the axis of the ball storage hopper is overlapped with the axis of the lower bulb tube 21, and the lower end opening of the ball storage hopper 22 is fixed and communicated with the upper end opening of the lower bulb tube 21. The electromagnetic valve 23 is mounted on the lower bulb 21 and used for controlling the on-off of the electromagnetic valve 23. The side wall of the ball path 24 is fixed with the inner wall of the lower ball hole 16, the extending direction of the ball path is arc-shaped, the main body part of the ball path 24 is positioned in the ball serving cavity 15, the upper end opening of the ball path 24 is communicated with the lower end opening of the lower ball tube 21, the lower end opening of the ball path 24 extends towards one side of the ball serving hole 8, and the lower end opening of the ball path 24 corresponds to the position of the ball serving hole 8.
As shown in fig. 2-3, the rotating rod 25 is a horizontally arranged round rod-shaped structure, one end of the rotating rod is rotatably connected with the inner wall of the service chamber 15, the other end of the rotating rod 25 penetrates through the side wall of the mounting opening 17 and is rotatably connected with the side wall, and two rotating rods 25 are arranged and are symmetrically arranged up and down about the lower end opening of the ball channel 24. The service wheel 26 is a round block structure, the axis of the service wheel coincides with the axis of the rotating rod 25, the service wheel 26 is sleeved on the rotating rod 25 and fixed with the rotating rod 25, two service wheels 26 are arranged on the two rotating rods 25 respectively, and the distance between the two service wheels 26 is smaller than the diameter of a common tennis ball.
As shown in fig. 3, the storage battery 27 and the motor 28 are both fixed to the inner wall of the mounting opening 17, the storage battery 27 is electrically connected to the battery, an output shaft of the motor 28 is fixed to an end portion of one of the rotating levers 25, and an axis of the output shaft of the motor 28 coincides with an axis of the rotating lever 25. The gear 29 is installed in the installing port 17, the axis of the gear is overlapped with the axis of the rotating rod 25, the gear 29 is sleeved on the rotating rod 25 and fixed with the rotating rod 25, two gears 29 are arranged and are respectively positioned on the two rotating rods 25, and the two gears 29 are meshed with each other.
The controller 11 is fixed on the upper surface of the box body 1, and the controller 11 is electrically connected with the electromagnetic valve 23 and the motor 28 and is used for controlling the opening and closing of the electromagnetic valve 23 and the motor 28. The voice recognizer 12 is fixed on a side wall of one side of the box body 1 and is electrically connected with the controller 11, and can recognize simple service instructions, such as that a user shouts "service", "start service", and the like, when the voice recognizer 12 recognizes the service instruction, the instruction is transmitted to the controller 11 in the form of an electric signal, the controller 11 controls the electromagnetic valve 23 to be opened briefly, so that a tennis ball just rolls down along the lower ball pipe 21, and then the controller 11 controls the electromagnetic valve 23 to be closed and controls the motor 28 to be opened. After the motor 28 works, the rotating rod 25 fixed with the output shaft of the motor 28 is driven to rotate, so that the gear 29 on the rotating rod 25 rotates, the other gear 29 and the rotating rod 25 rotate, at the moment, the two service wheels 26 rotate at a high speed, and the distance between the two service wheels 26 is smaller than the diameter of a tennis ball, so that the two service wheels 26 are matched with each other and clamp the tennis ball until the tennis ball is sent out from the service hole 8 at a high speed, the intelligence of the tennis ball machine is improved, and the tennis ball machine is more convenient to use by a user.
As shown in fig. 1-3, the top of the cylinder 13 is fixed to the bottom of the housing 1, the cylinder 13 is located at the bottom of the housing 1 near the edge of the housing 1, and the piston rod of the cylinder 13 extends vertically downward, so that the user can adjust the cylinder 13 conveniently, and the piston rod of the cylinder 13 lands on the ground, so that the housing 1 tilts towards one side, thereby facilitating the user to adjust the ball serving angle of the tennis ball serving machine.
As shown in fig. 2-3, according to the present invention, the harness assembly 3 is mounted to the housing 1 on the side of the service chamber 15 remote from the service hole 8. Preferably, the strap assembly 3 is composed of two strap bodies 31, and two ends of the two strap bodies 31 are fixed to the side wall of the box 1 on the same side, so that a user can conveniently carry the box 1 through the two strap bodies 31, and the user can conveniently carry the tennis ball serving machine up and down stairs. A storage cavity 18 is further formed in the box body 1, and an operation hole 19 communicated with the storage cavity 18 is formed in the side wall of the box body 1, which is far away from the serving hole 8. By adopting the technical scheme, when the tennis pitching machine needs to be carried to go upstairs and downstairs, a user can back up the box body 1 only by the two belt bodies 31 on the box body, so that the difficulty and labor intensity of the user in moving the tennis pitching machine up and down the stairs are reduced, and the physical consumption and the pain feeling of the arms of the user in the moving process are reduced.
As shown in fig. 3, the winding assembly 4 is installed in the storage cavity 18 for winding the belt body 31, and specifically, the winding assembly 4 includes a threaded rod 41, a guide rod 42 and a movable rod 43. The axis of the threaded rod 41 is vertical, the threaded rod 41 is rotatably mounted at the top of the box body 1, the height of the upper end of the threaded rod 41 is larger than that of the upper surface of the box body 1, and the lower end of the threaded rod 41 penetrates through the inner top wall of the storage cavity 18 and extends into the storage cavity 18. The guide rod 42 is a vertically arranged round rod-shaped structure, and the upper end of the guide rod is fixed with the inner top wall of the storage cavity 18. The movable rod 43 is a horizontally disposed rectangular rod-shaped structure, and is installed in the storage chamber 18, the threaded rod 41 penetrates through the movable rod 43 and is in threaded connection with the movable rod 43, and the guide rod 42 penetrates through the movable rod 43 and is in sliding fit with the movable rod 43.
As shown in fig. 4, the driving assembly 5 is mounted on the upper end of the threaded rod 41, and the driving assembly 5 includes a rotating disc 51 and an operating rod 52. The rotary disc 51 is a disc-shaped structure, the axis of the rotary disc is overlapped with the axis of the threaded rod 41, and the bottom surface of the rotary disc 51 is fixed with the upper end of the threaded rod 41. The operating rod 52 is a vertically arranged round rod-shaped structure, and the lower end of the operating rod is fixed with the upper surface of the rotating disc 51. The length of the belt body 31 is relatively large, in the normal use process of the tennis ball serving machine, in order to retract the belt body 31, a user needs to wind the belt body 31 around the movable rod 43, then hold the operating rod 52 and rotate the rotary table 51, so that the threaded rod 41 rotates, as the movable rod 43 is in threaded connection with the threaded rod 41, the guide rod 42 is in sliding fit with the movable rod 43, so that the movable rod 43 moves upwards along the vertical direction, the movable rod 43 pulls the belt body 31 upwards and the belt body 31 is straightened, and the probability of safety accidents caused by the fact that the belt body 31 is in a loose state is reduced.
Through adopting above-mentioned technical scheme, for reducing the staff and rotating the degree of difficulty of threaded rod, the staff only need hold the action bars and rotate to this makes the carousel and all rotates with the fixed threaded rod of carousel, thereby makes the movable rod rise or descend along vertical direction.
The protective assembly 6 is mounted on the box body 1, and the protective assembly 6 comprises a sleeve 61 and a top cap 62. The sleeve 61 is a cylindrical structure, the axis of the sleeve is overlapped with the axis of the threaded rod 41, the lower end surface of the sleeve 61 is fixed with the upper surface of the box body 1, and the height of the upper end surface of the sleeve 61 is larger than that of the upper end of the operating rod 52, so that the rotating disc 51 and the operating rod 52 are both positioned in the sleeve 61. The axis of the top cap 62 coincides with the axis of the sleeve 61, and the top cap 62 is sleeved on the sleeve 61 and is in threaded connection with the sleeve 61. The sleeve 61 is matched with the top cap 62, so that the rotary disc 51 and the operating rod 52 are both positioned in the sleeve 61, and the probability that the strap is loosened due to the fact that the threaded rod 41 rotates when a user accidentally touches the operating rod 52 is reduced. Through adopting above-mentioned technical scheme, sleeve and hood cooperation to this makes carousel and action bars all be located the sleeve, has reduced because of the unexpected touching action bars of user makes the threaded rod rotate, thereby makes the loose probability of braces change.
The side wall of the box body 1, which is far away from one side of the ball serving hole 8, is provided with the cleaning hole 7, and the inner bottom wall of the cleaning hole 7 is flush with the inner bottom wall of the storage cavity 18, so that a user can clean sundries falling to the inner bottom wall of the storage cavity 18 through the cleaning hole 7, and the storage cavity 18 is kept clean.
The using process of the invention is as follows: the voice recognizer 12 is fixed to the side wall of one side of the box body 1 and electrically connected with the controller 11, the voice recognizer 12 can recognize a simple service instruction, such as that a user shouts 'service', 'start service', and the like, when the service instruction is recognized, the voice recognizer 12 transmits the instruction to the controller 11 in the form of an electric signal, the controller 11 controls the electromagnetic valve 23 to be opened for a short time, so that a tennis ball just rolls down along the lower ball pipe 21, and then the controller 11 controls the electromagnetic valve 23 to be closed and controls the motor 28 to be opened. The motor 28 drives the rotating rod 25 fixed with the output shaft of the motor 28 to rotate after working, so that the gear 29 on the rotating rod 25 rotates, the other gear 29 and the rotating rod 25 both rotate, and at the moment, the two service wheels 26 both rotate at a high speed. Because the distance between the two service wheels 26 is smaller than the diameter of the tennis ball, the two service wheels 26 are matched with each other and clamp the tennis ball until the tennis ball is sent out from the service hole 8 at a high speed, the intelligence of the tennis ball service machine is improved, and the tennis ball service machine is more convenient for a user to use.
Because the length of the belt body 31 is large, in the normal use process of the tennis ball serving machine, in order to retract the belt body 31, a user only needs to wind the belt body 31 around the movable rod 43 and then hold the operating rod 52 and rotate the rotary table 51, so that the threaded rod 41 rotates, because the movable rod 43 is in threaded connection with the threaded rod 41, the guide rod 42 is in sliding fit with the movable rod 43, so that the movable rod 43 moves upwards along the vertical direction, the movable rod 43 pulls the belt body 31 upwards and the belt body 31 is stretched straightly, and the probability of safety accidents caused by the fact that the belt body 31 is in a loose state is reduced.
The foregoing is only a preferred application of the present invention, and it should be noted that, for those skilled in the art, various modifications and improvements can be made without departing from the technical principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.
Claims (8)
1. The portable intelligent tennis ball serving machine is characterized by comprising a box body (1), wherein a serving cavity (15) is arranged in the box body (1), a lower ball hole (16) communicated with the serving cavity (15) is formed in the top of the box body, a serving hole (8) communicated with the serving cavity (15) is formed in the side wall of one side of the box body (1), a serving assembly (2) and a strap assembly (3) used for carrying the box body (1) are mounted on the box body (1), the strap assembly (3) is located on one side, away from the serving hole (8), of the serving cavity (15), the strap assembly (3) is composed of two belt bodies (31), and two ends of the two belt bodies (31) are fixed on the side wall of the same side of the box body (1);
a storage cavity (18) is further formed in the box body (1), an operation hole (19) communicated with the storage cavity (18) is formed in the side wall of the box body (1) far away from one side of the service hole (8), a winding component (4) for winding the belt body (31) is arranged in the storage cavity (18), the rolling component (4) comprises a threaded rod (41) rotatably arranged at the top of the box body (1), a guide rod (42) fixed with the inner top wall of the storage cavity (18) and a movable rod (43) arranged in the storage cavity (18), the height of the upper end of the threaded rod (41) is greater than that of the upper surface of the box body (1), the lower end of the threaded rod (41) penetrates through the inner top wall of the storage cavity (18) and extends into the storage cavity (18), the threaded rod (41) penetrates through the movable rod (43) and is in threaded connection with the movable rod (43), the guide rod (42) penetrates through the movable rod (43) and is in sliding fit with the movable rod (43).
2. The portable intelligent tennis pitching machine according to claim 1, wherein a driving assembly (5) is mounted on the upper end of said threaded rod (41), said driving assembly (5) comprising a rotary disc (51) fixed to the upper end of said threaded rod (41) and an operating rod (52) fixed to the upper surface of said rotary disc (51).
3. The portable intelligent tennis ball serving machine according to claim 2, wherein the box body (1) is provided with a protective component (6), the protective component (6) comprises a sleeve (61) fixed on the upper surface of the box body (1) and a top cap (62) sleeved on the sleeve (61) and in threaded connection with the sleeve (61), and the rotary table (51) and the operating rod (52) are both located in the sleeve (61).
4. The portable intelligent tennis ball serving machine according to claim 1, wherein a cleaning hole (7) is formed in a side wall of the box body (1) on a side far away from the serving hole (8), and an inner bottom wall of the cleaning hole (7) is flush with an inner bottom wall of the storage cavity (18).
5. The portable intelligent tennis ball serving machine according to claim 1, wherein the serving assembly (2) comprises a lower ball tube (21) fixed to the upper surface of the box body (1), the lower opening of the lower ball tube (21) corresponds to and communicates with the upper opening of the lower ball hole (16), the serving assembly (2) further comprises a ball storage hopper (22) fixed to and communicates with the upper opening of the lower ball tube (21), an electromagnetic valve (23) mounted on the lower ball tube (21) and controlling the lower ball tube (21) to be turned on and off, a ball path (24) fixed to the inner wall of the lower ball hole (16), a rotating rod (25) rotatably mounted on the inner wall of the serving cavity (15), and a serving wheel (26) fixedly sleeved on the rotating rod (25), the rotating rod (25) is provided with two pieces and symmetrically arranged with respect to the lower opening of the ball path (24), and the side wall of the box body (1) adjacent to the serving hole (8) is provided with a mounting opening (17), two dwang (25) all runs through installing port (17) lateral wall and swivelling joint, installing port (17) inner wall is fixed with battery (27) and motor (28), battery (27) are connected with the battery electricity, the output shaft of motor (28) and the end fixing of one of them dwang (25), two all fixed cover is equipped with gear (29) on dwang (25), and two gear (29) meshing.
6. The portable intelligent tennis ball serving machine according to claim 5, wherein a controller (11) is fixed on the upper surface of the box body (1), and the controller (11) is used for controlling the opening and closing of the electromagnetic valve (23) and the motor (28).
7. The portable intelligent tennis pitching machine according to claim 6, wherein a voice recognizer (12) is fixed on the side wall of said box body (1), and said voice recognizer (12) is electrically connected with said controller (11).
8. The portable intelligent tennis ball serving machine according to claim 1, wherein a cylinder (13) and a leg (14) are fixed on the bottom surface of the box body (1), the cylinder (13) is located at a position close to the edge of the box body (1) at the bottom of the box body (1), a piston rod of the cylinder (13) extends vertically downwards, and a roller (141) with a foot brake is fixed at the bottom of the leg (14).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110363705.XA CN113018815A (en) | 2021-04-02 | 2021-04-02 | Portable intelligent tennis ball serving machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110363705.XA CN113018815A (en) | 2021-04-02 | 2021-04-02 | Portable intelligent tennis ball serving machine |
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| CN113018815A true CN113018815A (en) | 2021-06-25 |
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| CN202110363705.XA Pending CN113018815A (en) | 2021-04-02 | 2021-04-02 | Portable intelligent tennis ball serving machine |
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| CN113893512A (en) * | 2021-11-19 | 2022-01-07 | 西安航空职业技术学院 | Simulation ball serving device for volleyball training |
| CN114100098A (en) * | 2021-11-01 | 2022-03-01 | 安徽华羽体育用品有限公司 | Badminton launching device for high-strength training of badminton and use method of badminton launching device |
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