CN115006814A - Badminton picking device - Google Patents

Badminton picking device Download PDF

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Publication number
CN115006814A
CN115006814A CN202210773752.6A CN202210773752A CN115006814A CN 115006814 A CN115006814 A CN 115006814A CN 202210773752 A CN202210773752 A CN 202210773752A CN 115006814 A CN115006814 A CN 115006814A
Authority
CN
China
Prior art keywords
wall
casing
badminton
shuttlecock
ball
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202210773752.6A
Other languages
Chinese (zh)
Inventor
李华斌
贾晗
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Three Gorges Medical College
Original Assignee
Chongqing Three Gorges Medical College
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chongqing Three Gorges Medical College filed Critical Chongqing Three Gorges Medical College
Priority to CN202210773752.6A priority Critical patent/CN115006814A/en
Publication of CN115006814A publication Critical patent/CN115006814A/en
Withdrawn legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B67/00Sporting games or accessories therefor, not provided for in groups A63B1/00 - A63B65/00
    • A63B67/18Badminton or similar games with feathered missiles
    • A63B67/183Feathered missiles
    • A63B67/187Shuttlecocks
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B47/00Devices for handling or treating balls, e.g. for holding or carrying balls
    • A63B47/02Devices for handling or treating balls, e.g. for holding or carrying balls for picking-up or collecting
    • A63B47/021Devices for handling or treating balls, e.g. for holding or carrying balls for picking-up or collecting for picking-up automatically, e.g. by apparatus moving over the playing surface

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Specific Conveyance Elements (AREA)

Abstract

The invention relates to the field of sports equipment, in particular to a badminton ball picking device, wherein a circular cavity is formed in the surface of a shell, a first rectangular cavity communicated with the circular cavity is formed in the inner wall of the shell, a rotating roller is arranged on the inner wall of the circular cavity, and a rotating blade is arranged on the surface of the rotating roller; the badminton drops the surface of conveyer belt from circular cavity department, the badminton can be unified after transporting of conveyer belt and fall into in the ball section of thick bamboo, and the orientation is unified, can not waste the collection space of a ball section of thick bamboo, and need not arrange in order once more after collecting, staff's the work degree of difficulty has been reduced, fall the badminton of entering first rectangle intracavity from the both sides of mount, can release fast through the push pedal, can collect once more, also can collect and carry out unified taking out after having collected, the setting up of threaded rod makes the backup pad can use the gag lever post to rotate downwards as the center, make the backup pad parallel, thereby make the ball section of thick bamboo can follow convenient taking out in second rectangle intracavity, use.

Description

Badminton picking device
Technical Field
The invention relates to the technical field of sports equipment, in particular to a badminton picker.
Background
The badminton is an indoor sport item of a small-sized ball which is made of feathers and cork and is separated from a net, a long-handle netted racket is used for beating, the badminton item can hold badminton competitions, contestants need to train every day before the competition, a large number of badmintons can be used during training, and after a round of training, workers or trainers can collect badmintons scattered in a field and then train again.
Badminton on present place is usually collected with picking up football shirt or manual, and manual collection efficiency is slower, and the work degree of difficulty is great, and present badminton picks up football shirt and receive the ball efficiency fast, but can only unify and collect, and unified collection is placed and can be caused the damage to the badminton, and packs the badminton into a section of thick bamboo and can protect the badminton effectively, but need manually pack the badminton into a section of thick bamboo one ground in, leads to the work degree of difficulty to increase.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the badminton picking device, which can automatically pick the badminton, can put the badminton into the badminton cylinder after being collected, can effectively protect the badminton put into the badminton cylinder, ensures that the service life of the badminton is not reduced due to external reasons, ensures that the service life of the badminton is equivalent to the normal service life, and is convenient to use.
The basic scheme of the invention is as follows: badminton picking device, which comprises a housin, circular chamber has been seted up on the surface of casing, the first rectangle chamber with circular chamber intercommunication is seted up to the inner wall of casing, the live-rollers is installed to the inner wall in circular chamber, the surface mounting of live-rollers has the rotating blade, the conveyer belt is installed to the inner wall in first rectangle chamber, the surface mounting of conveyer belt has the mount, the inner wall of conveyer belt is provided with the driving roller, the second motor is installed to the inner wall of casing, the surface mounting that the surface of second motor is close to the driving roller fixed axle has the second drive belt, the second rectangle chamber with first rectangle chamber intercommunication is seted up to the inner wall of casing, the inner wall in second rectangle chamber is close to the terminal position department of conveyer belt and installs the backup pad, the upper portion surface mounting of backup pad has a ball section of thick bamboo, the movable groove has been seted up on the surface of ball section of thick bamboo.
Preferably, the fixed plate is installed to the bottom inner wall in first rectangle chamber, electric putter is installed to the side surface of fixed plate, the end department surface mounting of electric putter output shaft has the push pedal, the first rectangular channel with first rectangle chamber intercommunication is seted up to the side surface of casing, the rotor plate is installed to the inner wall of first rectangular channel, the threaded rod is installed to the inner wall in second rectangle chamber near the surface position department of backup pad, spacing fly leaf is installed to the inner wall in second rectangle chamber near the terminal position department of a ball section of thick bamboo.
Preferably, the inner wall that the terminal side surface of backup pad is close to the casing is installed and is used for the pivoted gag lever post, the inner wall of casing is seted up and is cooperated gliding spacing spout with spacing fly leaf, the screw thread groove that uses with the threaded rod cooperation is seted up on the surface of backup pad.
Preferably, electric putter and casing swing joint, threaded rod and casing fixed connection, threaded rod and backup pad threaded connection, the backup pad passes through the gag lever post and the spacing rotation of casing.
Preferably, the inner wall position department that the side surface of live-rollers is close to the casing installs the running gear, first motor is installed to the inner wall of casing, the surface position department that the surface of first motor output shaft is close to the running gear installs first drive belt, the surface mounting of casing has the baffle, the surface of casing is seted up and is rotated the groove with baffle cooperation pivoted, the baffle passes through the spacing rotation of gag lever post and casing.
Preferably, dust extraction is installed to the inner wall of casing, the bottom of casing is installed and is removed the wheel, the dead lever is installed near the inner wall of casing to the side surface of mount, the mount is fixed with the support body of conveyer belt.
Preferably, the fixed shaft of driving roller passes the mount, second drive belt and mount swing joint, the second drive belt is connected with driving roller insection, second motor and casing fixed connection.
Preferably, a plurality of semicircular grooves for placing the ball barrel are formed in the surface of the supporting plate, a fixing buckle is installed on the inner wall of the movable groove and is in limited rotation with the ball barrel through a limiting rod, and the ball barrel is movably connected with the supporting plate.
Preferably, the live-rollers with rotate leaf fixed connection, the surface mounting who rotates the leaf has the film, control mechanism is installed to the inner wall of casing, the camera that is used for observing the badminton is installed at the top of casing.
The working principle and the advantages of the invention are as follows:
(1) the badminton collects the circular intracavity through the rotating vane, the surface of conveyer belt drops from circular chamber department, the fixed mount of conveyer belt side surface makes the conveyer belt can fix in the casing, be used for preventing to transport the badminton simultaneously and drop, the badminton can be unified after transporting of conveyer belt in the section of thick bamboo of sliding into, and the orientation is unified, can not waste the collection space of a section of thick bamboo, the braces back of the body can be fixed on the ball section of thick bamboo surface, pack the badminton into a section of thick bamboo and can protect the badminton effectively, increase the life of badminton, the sportsman of being convenient for uses, and need not arrange in order once more after collecting, staff's the work degree of difficulty has been reduced.
(2) The badminton falling into the first rectangular cavity from the two sides of the fixing frame can be rapidly pushed out through the push plate, can be collected again, can be uniformly taken out after being collected, and the setting of the threaded rod enables the supporting plate to downwards rotate by taking the limiting rod as a center, so that the supporting plate is parallel, and the badminton barrel can be conveniently taken out from the second rectangular cavity for use.
Drawings
FIG. 1 is a schematic structural view of the present invention as a whole;
FIG. 2 is a side cross-sectional structural schematic view of the present invention;
FIG. 3 is a schematic structural view of the housing of the present invention;
FIG. 4 is a schematic view of the rotating blade and first motor of the present invention;
FIG. 5 is a schematic view of a second motor and conveyor belt of the present invention;
FIG. 6 is a schematic illustration of an exploded view of the conveyor belt of the present invention;
FIG. 7 is a schematic view of the structure of the support plate of the present invention;
FIG. 8 is a schematic structural view of a ball barrel according to the present invention;
FIG. 9 is a schematic structural view of a movable spacing plate according to the present invention;
reference numerals referred to in the drawings are: 1. a housing; 2. a circular lumen; 3. rotating the blades; 4. a baffle plate; 5. a limiting movable plate; 6. a limiting chute; 7. a first rectangular cavity; 8. a first rectangular groove; 9. a rotating plate; 10. a moving wheel; 11. a second rectangular cavity; 12. a fixed mount; 13. a driving roller; 14. a rotating roller; 15. a rotating gear; 16. a first motor; 17. fixing the rod; 18. a second belt; 19. a second motor; 20. a support plate; 21. a semicircular groove; 22. a ball cylinder; 23. a movable groove; 24. a fixing buckle; 25. a conveyor belt; 26. a thread groove; 27. a threaded rod; 28. a fixing plate; 29. an electric push rod; 30. pushing a plate; 31. a dust collection device; 32. a first drive belt.
Detailed Description
The following is further detailed by the specific embodiments: a badminton ball picking device comprises a shell 1, wherein a circular cavity 2 is formed in the surface of the shell 1, a first rectangular cavity 7 communicated with the circular cavity 2 is formed in the inner wall of the shell 1, a rotating roller 14 is installed on the inner wall of the circular cavity 2, a rotating blade 3 is installed on the surface of the rotating roller 14, a conveyor belt 25 is installed on the inner wall of the first rectangular cavity 7, badminton balls are collected into the circular cavity 2 through the rotating blade 3 and fall onto the surface of the conveyor belt 25 from the circular cavity 2, a fixing frame 12 is installed on the outer surface of the conveyor belt 25, a transmission roller 13 is arranged on the inner wall of the conveyor belt 25, a second motor 19 is installed on the inner wall of the shell 1, a second transmission belt 18 is installed on the surface, close to the fixing shaft of the transmission roller 13, of the second rectangular cavity 11 communicated with the first rectangular cavity 7 is formed in the inner wall of the shell 1, a support plate 20 is installed on the inner wall of the second rectangular cavity 11, close to the tail end of the conveyor belt 25, the upper portion surface mounting of backup pad 20 has a section of thick bamboo 22, and the badminton can be unified after the transportation of conveyer belt 25 and fall into in a section of thick bamboo 22, and the orientation is unified, can not waste the collection space of a section of thick bamboo 22, and a section of thick bamboo 22 surface can be fixed the braces and carry on one's body, and movable groove 23 has been seted up on a section of thick bamboo 22's surface, and the quantity of conveyer belt 25 is four, all installs mount 12 and second drive belt 18 between four conveyer belts 25.
Furthermore, a fixed plate 28 is installed on the inner wall of the bottom of the first rectangular cavity 7, an electric push rod 29 is installed on the side surface of the fixed plate 28, a push plate 30 is installed on the surface of the end of an output shaft of the electric push rod 29, shuttlecocks falling into the first rectangular cavity 7 from the two sides of the fixed frame 12 can be rapidly pushed out through the push plate 30 and can be collected again, and can also be uniformly taken out after being collected, a first rectangular groove 8 communicated with the first rectangular cavity 7 is formed in the side surface of the shell 1, a rotating plate 9 is installed on the inner wall of the first rectangular groove 8, a threaded rod 27 is installed on the inner wall of the second rectangular cavity 11 at the position close to the surface of the supporting plate 20, a limit movable plate 5 is installed on the inner wall of the second rectangular cavity 11 at the position close to the tail end of the ball barrel 22, the threaded rod 27 drives the supporting plate 20 to be parallel, and after the limit movable plate 5 slides into the limit sliding groove 6, the ball barrel 22 can be conveniently taken out from the second rectangular cavity 11, the use is carried out, the terminal side surface of backup pad 20 is close to the inner wall of casing 1 and is installed and be used for the pivoted gag lever post, the inner wall of casing 1 is seted up and is cooperated gliding spacing spout 6 with spacing fly leaf 5, the screw thread groove 26 that uses with threaded rod 27 cooperation is seted up on the surface of backup pad 20, electric putter 29 and casing 1 swing joint, threaded rod 27 and casing 1 fixed connection, threaded rod 27 and backup pad 20 threaded connection, backup pad 20 passes through the gag lever post and the spacing rotation of casing 1.
Furthermore, a rotating gear 15 is installed at a position, close to the inner wall of the casing 1, of the side surface of the rotating roller 14, a first motor 16 is installed at the inner wall of the casing 1, a first transmission belt 32 is installed at a position, close to the surface of the rotating gear 15, of the surface of an output shaft of the first motor 16, a baffle 4 is installed at the surface of the casing 1, a rotating groove which is matched with the baffle 4 to rotate is formed in the surface of the casing 1, the baffle 4 rotates in a limiting mode with the casing 1 through a limiting rod, a dust suction device 31 is installed at the inner wall of the casing 1, the dust suction device 31 enables the ball pickup device to clean garbage on a field during ball pickup, a moving wheel 10 is installed at the bottom of the casing 1, a fixing rod 17 is installed at a position, close to the inner wall of the casing 1, a fixing frame 12 is fixed with a frame body of the transmission belt 25, a fixing shaft of the transmission roller 13 penetrates through the fixing frame 12, and a second transmission belt 18 is movably connected with the fixing frame 12, the second driving belt 18 is connected with the driving roller 13 in a toothed manner, and the second motor 19 is fixedly connected with the shell 1.
Further, a plurality of semicircular grooves 21 used for placing the shuttlecock cylinder 22 are formed in the surface of the supporting plate 20, a fixing buckle 24 is installed on the inner wall of the movable groove 23, the fixing buckle 24 rotates in a limiting mode with the shuttlecock cylinder 22 through a limiting rod, braces are installed on the fixing buckle 24, the shuttlecock cylinder 22 can be carried on the back, the shuttlecock cylinder 22 is movably connected with the supporting plate 20, the rotating roller 14 is fixedly connected with the rotating blades 3, the rubber film is installed on the surface of the rotating blades 3, a control mechanism is installed on the inner wall of the shell 1, a camera used for observing the shuttlecock is installed at the top of the shell 1, the control mechanism is electrically connected with the moving wheel 10, the first motor 16, the second motor 19, the dust collector 31 and the camera.
As shown in fig. 1 to 9, the working principle and the using process of the present invention are as follows: when the badminton racket is used, the position of a badminton is observed through a camera at the top of the shell 1, the control mechanism controls the moving wheel 10 to move, the first motor 16 is controlled to be started, the first motor 16 drives the rotating gear 15 to rotate through the first transmission belt 32, so that the rotating roller 14 drives the rotating blade 3 to rotate in the circular cavity 2, the rubber film on the surface of the rotating roller 14 drives the ground badminton to rapidly rotate into the circular cavity 2, the badminton falls onto the surface of the transmission belt 25 in the fixed frame 12 through the circular cavity 2, the second motor 19 drives the transmission roller 13 to rotate through the second transmission belt 18, the transmission belt 25 is used for conveying the badminton, if the badminton is collected for a plurality of times, or the problem of angle and force is caused, the badminton can fall into the bottom of the first rectangular cavity 7 from two sides of the fixed frame 12, the push plate 30 is pushed through the electric push rod 29, so that the badminton at the bottom of the first rectangular cavity 7 is pushed by the push plate 30, after the shuttlecocks are pushed to the surface of the rotating plate 9, the rotating plate 9 is stressed to rotate through the spring hinge, so that the shuttlecocks fall out from a gap between the rotating plate 9 and the first rectangular groove 8, the method can uniformly take out and store the shuttlecocks after the shuttlecocks are cleaned, or can push out the shuttlecocks in the first rectangular cavity 7 when the shuttlecock picker works, and then collect the shuttlecocks into the shuttlecock cylinder 22, because the conveyor belt 25 machine fixing frame 12 is an inclined angle, the friction between the shuttlecock head and the conveyor belt 25 is larger because the shuttlecock head is made of materials, and meanwhile, the shuttlecock head is larger than the shuttlecock, when the shuttlecocks are conveyed through the conveyor belt 25, the shuttlecocks can rotate by taking the shuttlecock head as the center, so that the shuttlecocks face to face downwards, the shuttlecocks fall into the shuttlecock cylinder 22 at the tail end of the conveyor belt 25 after being conveyed through the conveyor belt 25, the supporting plate 20 at the bottom of the shuttlecock cylinder 22 is in threaded fit with the threaded rod 27, so that the shuttlecocks can rotate by taking the limiting rod as the center, thereby drive the ball section of thick bamboo 22 can be in with the unanimous angle of conveyer belt 25 slope level, when needs take out ball section of thick bamboo 22, the electric power device of control mechanism control threaded rod 27 bottom, make threaded rod 27 screw drive backup pad 20 and gag lever post rotate downwards as the center, make its surperficial ball section of thick bamboo 22 parallel, then through upwards lifting the handle on spacing fly leaf 5 surface, make spacing fly leaf 5 slide to spacing spout 6, thereby make the ball section of thick bamboo 22 can convenient taking out, through the braces on ball section of thick bamboo 22 surface, can be with the back of the body of ball section of thick bamboo 22, conveniently use the badminton in the ball section of thick bamboo 22.
The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims (9)

1. Badminton picks up ball ware, including casing (1), its characterized in that: circular chamber (2) have been seted up on the surface of casing (1), first rectangle chamber (7) with circular chamber (2) intercommunication is seted up to the inner wall of casing (1), live-rollers (14) are installed to the inner wall of circular chamber (2), the surface mounting of live-rollers (14) has rotating vane (3), conveyer belt (25) are installed to the inner wall of first rectangle chamber (7), the surface mounting of conveyer belt (25) has mount (12), the inner wall of conveyer belt (25) is provided with driving roller (13), second motor (19) are installed to the inner wall of casing (1), the surface mounting that the surface of second motor (19) is close to driving roller (13) fixed axle has second drive belt (18), second rectangle chamber (11) with first rectangle chamber (7) intercommunication is seted up to the inner wall of casing (1), backup pad (20) are installed to the terminal position department that the inner wall of second rectangle chamber (11) is close to conveyer belt (25) The upper surface of the supporting plate (20) is provided with a ball barrel (22), and the surface of the ball barrel (22) is provided with a movable groove (23).
2. The shuttlecock picker according to claim 1, wherein: fixed plate (28) are installed to the bottom inner wall in first rectangle chamber (7), electric putter (29) are installed to the side surface of fixed plate (28), the end department surface mounting of electric putter (29) output shaft has push pedal (30), first rectangular channel (8) with first rectangle chamber (7) intercommunication are seted up to the side surface of casing (1), rotor plate (9) are installed to the inner wall of first rectangular channel (8), threaded rod (27) are installed to the inner wall of second rectangle chamber (11) near the surface position department of backup pad (20), the terminal position department that the inner wall of second rectangle chamber (11) is close to ball section of thick bamboo (22) installs spacing fly leaf (5).
3. The shuttlecock picker according to claim 2, wherein: the limiting device is characterized in that a limiting rod for rotation is mounted on the surface of the side of the tail end of the supporting plate (20) close to the inner wall of the shell (1), a limiting sliding groove (6) matched with the limiting movable plate (5) in a sliding mode is formed in the inner wall of the shell (1), and a threaded groove (26) matched with a threaded rod (27) in use is formed in the surface of the supporting plate (20).
4. The shuttlecock picker according to claim 2, wherein: electric putter (29) and casing (1) swing joint, threaded rod (27) and casing (1) fixed connection, threaded rod (27) and backup pad (20) threaded connection, backup pad (20) are through gag lever post and casing (1) spacing rotation.
5. The shuttlecock picker according to claim 1, wherein: the utility model discloses a novel motor, including casing (1), the inner wall position department that the side surface of live-rollers (14) is close to casing (1) installs running gear (15), first motor (16) are installed to the inner wall of casing (1), the surface position department that the surface of first motor (16) output shaft is close to running gear (15) installs first drive belt (32), the surface mounting of casing (1) has baffle (4), the surface of casing (1) is seted up and is rotated the groove with baffle (4) cooperation pivoted, baffle (4) are through the spacing rotation of gag lever post and casing (1).
6. The shuttlecock picker according to claim 1, wherein: dust extraction (31) are installed to the inner wall of casing (1), removal wheel (10) are installed to the bottom of casing (1), dead lever (17) are installed to the inner wall that the side surface of mount (12) is close to casing (1).
7. The fixed frame (12) is fixed with the frame body of the conveying belt (25), the fixed shaft of the driving roller (13) penetrates through the fixed frame (12), the second driving belt (18) is movably connected with the fixed frame (12), the second driving belt (18) is connected with the teeth of the driving roller (13), and the second motor (19) is fixedly connected with the shell body (1).
8. The shuttlecock picker according to claim 1, wherein: a plurality of semicircular grooves (21) used for placing the ball barrel (22) are formed in the surface of the supporting plate (20), fixing buckles (24) are installed on the inner wall of the movable groove (23), the fixing buckles (24) rotate in a limiting mode with the ball barrel (22) through limiting rods, and the ball barrel (22) is movably connected with the supporting plate (20).
9. The shuttlecock picker according to claim 1, wherein: the badminton racket is characterized in that the rotating roller (14) is fixedly connected with the rotating blade (3), a rubber film is arranged on the surface of the rotating blade (3), a control mechanism is arranged on the inner wall of the shell (1), and a camera used for observing the badminton racket is arranged at the top of the shell (1).
CN202210773752.6A 2022-07-01 2022-07-01 Badminton picking device Withdrawn CN115006814A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210773752.6A CN115006814A (en) 2022-07-01 2022-07-01 Badminton picking device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210773752.6A CN115006814A (en) 2022-07-01 2022-07-01 Badminton picking device

Publications (1)

Publication Number Publication Date
CN115006814A true CN115006814A (en) 2022-09-06

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ID=83078683

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210773752.6A Withdrawn CN115006814A (en) 2022-07-01 2022-07-01 Badminton picking device

Country Status (1)

Country Link
CN (1) CN115006814A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117566392A (en) * 2024-01-17 2024-02-20 牡丹江师范学院 Automatic change badminton arrangement device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117566392A (en) * 2024-01-17 2024-02-20 牡丹江师范学院 Automatic change badminton arrangement device
CN117566392B (en) * 2024-01-17 2024-03-15 牡丹江师范学院 Automatic change badminton arrangement device

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Application publication date: 20220906