CN108704293A - A kind of tennis transmitting-receiving ball device - Google Patents
A kind of tennis transmitting-receiving ball device Download PDFInfo
- Publication number
- CN108704293A CN108704293A CN201810521067.8A CN201810521067A CN108704293A CN 108704293 A CN108704293 A CN 108704293A CN 201810521067 A CN201810521067 A CN 201810521067A CN 108704293 A CN108704293 A CN 108704293A
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- Prior art keywords
- ball
- tennis
- plate
- cylinder
- fixed
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Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B47/00—Devices for handling or treating balls, e.g. for holding or carrying balls
- A63B47/02—Devices for handling or treating balls, e.g. for holding or carrying balls for picking-up or collecting
- A63B47/024—Devices for handling or treating balls, e.g. for holding or carrying balls for picking-up or collecting for collecting by using a sweeping means moving across the playing surface
-
- 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
Abstract
The invention discloses a kind of tennises to receive and dispatch ball device, including vehicle frame, wheel and handle, further includes ball collecting device, dribbling device and ball serving device, and the ball serving device includes frequency regulation arrangement and rotation toss device；The rotation toss device includes fixed disk, rotating cylinder in fixed disk, and the magnetic induction lock that tennis flies out is controlled according to rotating speed, the fixed disk includes top plate and bottom plate, side plate that is jagged and being looped around between top plate and bottom plate is arranged, and the movable plate for being arranged on notch and being connect with magnetic induction lock, the match play I docked with two-way ball cylinder is provided on the top plate；Described rotating cylinder one end is provided with the match play II docked with match play I, and the end is fixed with the motor III through bottom plate, and the magnet coordinated with magnetic induction lock is provided on the other end.The present invention can be applicable in different service frequencies not card ball, and course of action carries camber line in the horizontal direction and ball can turn to.
Description
Technical field
The present invention relates to Sports training apparatus fields, and in particular to receives and dispatches ball device to a kind of tennis.
Background technology
Tennis is current relatively common one of outdoor sports.Netman typically practices with people in training, practice
In the process regular bends over to pick up ball, and often to expend player much physical, while the training time is also easy to be restricted by other people.
Document CN 102145223A disclose a kind of automatic tennis ball transceiver, and the transmitting-receiving ball device with motor by connecting
Apertured partition tennis extruding is launched come the extruding wheel for controlling service frequency, while being reversely rotated using two, but work as
When service frequency becomes faster, which is easy card ball when frequency is served a ball in control, while the type served a ball is upper rotation, backspin peace
Ball, course of action lack variation, are easy selected palm and hold, and then influence training effect.
Invention content
The technical problem to be solved in the present invention is to provide a kind of tennises to receive and dispatch ball device, can be applicable in different service frequencies simultaneously
Not card ball, and course of action carries camber line in the horizontal direction and ball can turn to.
Present disclosure includes vehicle frame, is fixed at least four wheels of vehicle frame bottom end, and is arranged on vehicle frame
Handle, is provided with cavity in the vehicle frame, and cavity bottom end is provided with ball hole, and cavity top is provided with ball mouth, it is described go out ball
It is provided with the receipts ball groove coordinated with ball mouth outside mouthful.The invention also includes the ball collecting devices being arranged in ball hole, are arranged in cavity
Interior dribbling device, and with receive the ball serving device that connect of ball groove, the ball serving device includes frequency regulation arrangement and rotation throwing
Ball device.
The frequency regulation arrangement includes release cylinder, position-limiting drum, two-way ball cylinder and slider-crank mechanism, on the position-limiting drum
It is provided with perforation, position-limiting drum one end is connect with an interface of two-way ball cylinder, and the other end coordinates with slider-crank mechanism, described to send
Ball cylinder one end is connected to ball groove is received, and the other end is fixed with the perforation on position-limiting drum, and perforation both sides are located on the position-limiting drum inner wall
It is provided at least two telescopic holes for limiting tennis movement, the other end of the two-way ball cylinder is docked with rotation toss device.
After tennis enters release cylinder from receipts ball groove, tennis is because former and later two telescopic holes will be unable in position-limiting drum
Free displacement enters rotation toss device convenient for slider-crank mechanism push tennis；If being not provided with telescopic hole, because of tennis transmitting-receiving dress
The reason for setting movement or vibrations, the tennis into position-limiting drum are likely to be moved forward and backward, to make other nets in release cylinder
Ball enters position-limiting drum, is unable to reach the primary purpose for only sending out a ball.
The rotation toss device includes fixed disk, the rotating cylinder being located in fixed disk, and controls tennis according to rotating speed and fly
The magnetic induction lock gone out, the fixed disk include top plate and bottom plate, side plate that is jagged and being looped around between top plate and bottom plate are arranged,
And the movable plate for being arranged on notch and being connect with magnetic induction lock, the match play docked with two-way ball cylinder is provided on the top plate
Ⅰ；Described rotating cylinder one end is provided with the match play II docked with match play I, and the end is fixed with the motor III through bottom plate, another
The magnet coordinated with magnetic induction lock is provided on end.
Described rotating cylinder one end is fixed with limiting plate, and is provided with match play II on the fixed one end of limiting plate, and motor III connects
One end that the transmission shaft connect passes through the axis hole on bottom plate to be provided with limiting plate with rotating cylinder is fixed, and makes rotating cylinder around fixed disk center
Rotation.Be provided on the bottom plate with the matched groove of movable plate, movable plate close when, movable plate is plugged in groove, is prevented
Movable plate is pushed open by the tennis for making centripetal movement；In addition, tennis is acted in rotary course by two power, one be side plate and
The centripetal force in the direction center of circle that movable plate applies, the other is the power tangentially that rotating cylinder applies.When movable plate is beaten
After opening, tennis flies out rotation toss device, and tennis radially has speed, tangentially there is also speed, tennis at this time
Flight path it is arc-shaped, and due to the reason of tennis itself rotation, movement locus of the tennis after landing can change,
Course of action generates covert.Tennis R-T unit is placed on one of half-court center position rearward, tennis R-T unit and opposite
There can be an angle between two endpoints of half-court baseline, angle is advisable with 60 degree, and left and right drift angle each 30 is divided with place center line
Degree；Tennis is after radially flying out, there are deviation between drop point and radial direction when flying out, deviation generally at 10 degree or so,
Therefore the size and orientation of movable plate can be limited to：Towards opposite half-court, using center line as boundary, drift angle is 20 degree to the right, to the left
Drift angle is 40 degree, so that the ball sent out can fall half-court over there, specific angle can be adjusted according to the rotating speed of rotating cylinder.
The ball collecting device includes at least two fixed plates, respectively with the fixed shaft of two fixed plates, and with fixation
Plate is vertical and is uniformly plugged at least three blocks in shaft receipts ball plates, and the shaft is with wheel by transmitting band connection；Receive ball plate
It is rotated with the rolling of wheel, tennis out of, ground dials to vehicle frame cavity.
The dribbling device includes horizontal conveying belt, vertical carousels, at least three idler wheels in conveyor belt ends is arranged
With the polylith baffle in transmission belt surface is set, described horizontal conveying belt one end and vertical carousels one end connect same jointly
Idler wheel, by transmitting band connection, between the baffle and idler wheel, there are 5 to 10 degree to be open to vertical carousels with wheel for the idler wheel
Angle.
Two conveyer belts are more than the diameter of a tennis but the diameter less than two tennises away from the distance between vehicle frame；Gear
Plate and the idler wheel that horizontal transmission takes are not parallel, there is 5 DEG C to 10 DEG C of angle between the two, and angle is transmitted towards direction is vertical
Band；There is also the baffles one that angle, angle direction and angle take with horizontal transmission between baffle and the idler wheel of vertical carousels
It causes.After tennis is dialed to by receipts ball plate in cavity, tennis by horizontal conveying belt baffle effect by vertical carousels direction
Push, when horizontal conveying belt baffle pushes tennis to idler wheel end, and when starting to move upwards, because of angle, tennis because
Gravity is slided to vertical carousels and is fallen on the baffle of vertical carousels, simultaneously because the reason of angle, tennis are sent to perpendicular
After straight conveyer belt baffle will not rollback, when vertical carousels baffle moves to ball mouth, tennis can be because baffle angle be from going out ball
Mouth slides and is deposited in and receives in ball groove.
The slider-crank mechanism includes moving mass, horizon bar, drive link and power wheel, and the moving mass is located at position-limiting drum
Interior, horizon bar one end is connect with moving mass, and the other end is hinged with drive link, and the drive link other end is hinged on power wheel edge
Position, the power wheel are connect with motor I.Motor I drives power wheel rotation, to make drive link and the hinged one end of power wheel
It circles, at the same time, drive link can pull horizon bar reciprocating, and the regular push of moving mass is made constantly to fall
Tennis in position-limiting drum, therefore by adjusting the rotating speed of motor I, the effect of can be achieved with adjusting service frequency, and do not allow
Easily there is the phenomenon that card ball.
The magnetic induction lock includes the sequentially connected magnetoelectric transducer being arranged on side plate, can control size of current and side
To controller, and the motor II that is connect with movable plate；Magnetoelectric transducer is used to measure the rotating speed of rotating cylinder, passes through electromagnetism sense
Principle is answered, rotating speed is converted into the output of the induced potential in coil, the mechanical energy of testee is converted into electric signal and is input to
Controller；It is defeated in controller because the entrance of tennis causes rotating cylinder rotating speed temporarily to reduce when tennis enters in rotating cylinder
Enter signal and exception occur, abnormal signal opens the positive switch of motor II after so that controller was postponed at 2 seconds, delay time can basis
The rotating speed of rotating cylinder is adjusted, and rope drum is provided on motor II, is connected by drawstring between rope drum and movable plate, motor
II be activated after can quick rotation drive drawstring pull-up movable plate, movable plate movement is quick, does not interfere with dishing out for tennis, is spaced
After 1 second, controller closes the positive switch on motor II, opens the reverser of motor II, makes electric current reversely from motor II
Pass through, the magnetic field caused by reverse current of the coil in motor II overturns and rotates backward, motor after rope drum goes back to original position
II closes reverser, and movable plate is caught in the groove of bottom plate downwards again due to gravity.
The receipts ball groove is arranged in funnel-form on vehicle frame, and funnelform receipts ball groove lowest point is connected to release cylinder, is convenient for
The tennis of collection rolls into release cylinder automatically downwards due to gravity.
The telescopic hole is less than the cross-sectional area of tennis, is more than the cross-sectional area of moving mass, and telescopic hole is stood in tennis
When to tennis rise position-limiting action, simultaneous retractable hole will not hinder moving mass to pass through, moving mass is enable smoothly to push tennis.
The flexible Porous materials are deformable material, such as elastic rubber layer or reticular structure, when moving mass pushes tennis, net
Ball, which can squeeze telescopic hole, makes telescopic hole generate deformation, so that tennis can pass through telescopic hole and enter along two-way ball cylinder
Rotate toss device.
The rotating cylinder is in be more than 0 DEG C of angle for being less than or equal to 5 DEG C with horizontal direction, is sent in fixed disk convenient for tennis
When the heart, tennis scrolls down through due to gravity, so that tennis is pushed at fixed plate edge and dishes out after acceleration.
Beneficial effects of the present invention are：
(1) banana kick can be sent out by rotating horizontally the tennis dished out, because itself rotation can occur in a disguised form, to carry after tennis lands
The high impact difficulty of netman, improves training effect.
(2) service frequency is controlled by slider-crank mechanism, it is not easy to card ball phenomenon occur.
(3) displacement of tennis when telescopic hole can limit standing, can be such that tennis is squeezed from telescopic hole when tennis is pushed
Go out, can guarantee primary, there are one balls in position-limiting drum.
(4) idler wheel being connect with wheel makes conveyer belt and baffle in tennis transmitting-receiving ball device movement, can automatically transport ball
It send to receipts ball groove.
(5) there are 5 to 10 degree openings between baffle and idler wheel to the angle of vertical carousels, is convenient for tennis from horizontal conveying belt
It is transferred to vertical carousels.
(6) magnetic induction lock can control the switch of movable plate according to tennis rotating speed size, ensure the ball speed sent out every time all
Preset value can be reached, so that it is guaranteed that the quality of Ball for training.
(7) it is in funnel-form to receive ball groove, and release cylinder is rolled into automatically downwards due to gravity convenient for the tennis of collection.
(8) rotating cylinder is in be more than 0 DEG C of angle for being less than or equal to 5 DEG C with horizontal direction, convenient for tennis lower rolling due to gravity
It dishes out to be pushed at fixed plate edge after acceleration.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structural schematic diagram of frequency regulation arrangement of the present invention.
Fig. 3 is the top view structural schematic diagram of present invention rotation toss device.
Fig. 4 is the structural schematic diagram of present invention rotation toss device and magnetic induction lock
1 fixed plate, 111 receipts ball plates, 112 shafts, 2 horizontal conveying belts, 211 vertical carousels, 212 idler wheels, 213 baffles, 3
Moving mass, 311 horizon bars, 312 drive links, 313 power wheels, 314 motors I, 4 rotation toss devices, 411 top plates, 412 bottom plates, 413
Side plate, 414 movable plates, 415 match plays I, 416 axis holes, 5 rotating cylinders, 511 limiting plates, 512 magnets, 513 match plays II, 6 magnetic-electric sensings
Device, 611 inductive heads, 7 controllers, 8 motors II, 811 rope drums, 812 drawstrings, 9 motors III, 911 transmission shafts, 10 cavitys, 1011
Ball hole, 1012 ball mouths, 11 receive ball groove, 1111 match plays III, 12 release cylinders, 1211 telescopic holes, 13 position-limiting drums, 1311 two-way balls
Cylinder, 14 wheels, 15 handles.
Specific implementation mode
As shown in attached drawing 1-4, the present invention includes vehicle frame, is fixed at least four wheels 14 of vehicle frame bottom end, and setting
Handle 15 on vehicle frame is provided with cavity 10 in the vehicle frame, and 10 bottom end of cavity is provided with ball hole 1011, and cavity top is set
It is equipped with ball mouth 1012, the receipts ball groove 11 coordinated with ball mouth 1012 is provided with outside the ball mouth 1012, further includes that setting exists
The dribbling device in cavity 10 is arranged in the ball collecting device of ball hole 1011, and the ball serving device being connect with receipts ball groove 11, institute
It includes frequency regulation arrangement and rotation toss device 4 to state ball serving device；
The frequency regulation arrangement includes release cylinder 12, position-limiting drum 13, two-way ball cylinder 1311 and slider-crank mechanism, described
Perforation is provided on position-limiting drum 13,13 one end of position-limiting drum is connect with an interface of two-way ball cylinder 1311, the other end and slide crank
Block mechanism coordinates, and described 12 one end of release cylinder is connected to ball groove 11 is received, and the other end is fixed with the perforation on position-limiting drum 13, the limit
It is located at perforation both sides on 13 inner wall of cylinder of position and is provided at least two telescopic holes 1211 for limiting tennis movement, the two-way ball
The other end of cylinder 1311 is docked with rotation toss device 4；
The rotation toss device 4 includes fixed disk, the rotating cylinder 5 being located in fixed disk, and controls tennis according to rotating speed
The magnetic induction lock to fly out, the fixed disk includes top plate 411, bottom plate 412, setting is jagged and is looped around top plate 411 and bottom plate
Side plate 413 between 412, and the movable plate 414 that is arranged on notch and is connect with magnetic induction lock are set on the top plate 411
It is equipped with the match play I 415 docked with two-way ball cylinder 1311；5 one end of the rotating cylinder is fixed with limiting plate 511, solid with limiting plate 511
It is provided with the match play II 513 docked with match play I 415 on fixed one end, the magnet coordinated with magnetic induction lock is provided on the other end
512, the transmission shaft 911 that motor III 9 connects passes through the axis hole 416 on bottom plate 412 to be located at the one end for fixing disk center with rotating cylinder 5
It is fixed, make rotating cylinder 5 around fixed disk center's rotation.
The ball collecting device includes at least two fixed plates 1, respectively with 1 fixed shaft 112, Yi Jiyu of two fixed plates
Fixed plate 1 is vertical and is uniformly plugged at least three blocks in shaft 112 receipts ball plates 111, and the shaft 112 passes through biography with wheel 14
Send band connection.
The dribbling device includes horizontal conveying belt 2, vertical carousels 211, is arranged at least three of conveyor belt ends
Idler wheel 212 and be arranged transmission belt surface polylith baffle 213,211 one end of 2 one end of the horizontal conveying belt and vertical carousels
The same idler wheel 212 is connected jointly, and the idler wheel 212 is with wheel 14 by transmitting band connection, the baffle 213 and idler wheel 212
Between there are 5 to 10 degree opening to vertical carousels 211 angle.
The slider-crank mechanism includes moving mass 3, horizon bar 311, drive link 312 and power wheel 313, the moving mass
3 are located in position-limiting drum 13, and 311 one end of horizon bar is connect with moving mass 3, and the other end is hinged with drive link 312, the drive link
312 other ends are hinged on 313 marginal position of power wheel, and the power wheel 313 is connect with motor I 314.
The magnetic induction lock includes the sequentially connected magnetoelectric transducer 6 being arranged on side plate 413, can control size of current
With the controller 7 in direction, and the motor II 8 that is connect with movable plate 414, inductive head 611 is provided on magnetoelectric transducer 6, is felt
It answers and incudes with magnet 512 in first 611 insertion side plate 413；Rope drum 811, rope drum 811 and movable plate are provided on motor II 8
It is connected by drawstring 812 between 414, meeting quick rotation drives 812 pull-up movable plate 414 of drawstring, activity after motor II 8 is activated
Plate 414 fast moves that tennis is made to be spilled over.
The receipts ball groove 11 is arranged in funnel-form on vehicle frame, and funnelform 11 lowest point of receipts ball groove connects with release cylinder 12
It is logical, release cylinder 12 is rolled into automatically downwards due to gravity convenient for the tennis of collection.
The telescopic hole 1211 is less than the cross-sectional area of tennis, is more than the cross-sectional area of moving mass 3, and telescopic hole 1211 exists
Position-limiting action is played to tennis when tennis is stood, simultaneous retractable hole 1211 will not hinder moving mass 3 to pass through, and keep moving mass 3 smooth
Push tennis.
1211 material of the telescopic hole is deformable material, and the flexible Porous materials are deformable material, such as elastic rubber layer or
Reticular structure, when moving mass 3 pushes tennis, tennis, which can squeeze telescopic hole 1211, makes telescopic hole 1211 generate deformation, to make
Telescopic hole 1211 can be passed through and enter rotation toss device 4 along two-way ball cylinder 1311 by obtaining tennis.
The rotating cylinder 5 is in be more than 0 DEG C of angle for being less than or equal to 5 DEG C with horizontal direction, and fixed disk is sent to convenient for tennis
When center, tennis scrolls down through due to gravity, so that tennis is pushed at fixed plate edge and dishes out after acceleration.
The present invention use step be：
(1) handle for pushing tennis R-T unit, collects the tennis fallen on ground；Wait for that the last one tennis is incorporated into net
After ball R-T unit, tennis R-T unit is continued to press on 1 minute or so, after all tennises are all sent to and receive ball groove, by net
Ball R-T unit shifts appointed place onto.
(2) tennis R-T unit power supply is opened, the switch of motor III is opened, when rotating cylinder reaches desired speed, is opened
Then the switch of motor I starts practice stroke by the current regulation service frequency of regulation motor I.
(3) it after practicing, turns off the power switch, pushes tennis R-T unit to collect the tennis of scattered on floor, wait for net
After ball is collected, tennis R-T unit is placed on designated position and waits for next use.
Claims (9)
1. a kind of tennis receives and dispatches ball device, including vehicle frame, at least four wheels (14) of vehicle frame bottom end are fixed on, and setting exists
Handle (15) on vehicle frame is provided with cavity (10) in the vehicle frame, and cavity (10) bottom end is provided with ball hole (1011), cavity
Top is provided with ball mouth (1012), and the receipts ball groove with ball mouth (1012) cooperation is provided with outside the ball mouth (1012)
(11), it is characterised in that：Including the ball collecting device in ball hole (1011) is arranged, the dribbling device being arranged in cavity (10),
And the ball serving device being connect with receipts ball groove (11), the ball serving device include frequency regulation arrangement and rotation toss device (4)；
The frequency regulation arrangement includes release cylinder (12), position-limiting drum (13), two-way ball cylinder (1311) and slider-crank mechanism, institute
It states and is provided with perforation on position-limiting drum (13), position-limiting drum (13) one end is connect with an interface of two-way ball cylinder (1311), the other end
Coordinate with slider-crank mechanism, described release cylinder (12) one end is connected to ball groove (11) is received, on the other end and position-limiting drum (13)
Perforation is fixed, and perforation both sides are located on position-limiting drum (13) inner wall and are provided at least two for limiting the flexible of tennis movement
The other end in hole (1211), the two-way ball cylinder (1311) is docked with rotation toss device (4)；
The rotation toss device (4) includes fixed disk, the rotating cylinder (5) being located in fixed disk, and controls tennis according to rotating speed
The magnetic induction lock to fly out, the fixed disk includes top plate (411), bottom plate (412), setting is jagged and is looped around top plate (411)
Side plate (413) between bottom plate (412), and the movable plate (414) that is arranged on notch and is connect with magnetic induction lock, it is described
The match play I (415) docked with two-way ball cylinder (1311) is provided on top plate (411)；Described rotating cylinder (5) one end is provided with and ball
The match play II (513) of hole I (415) docking, and the end and the motor III (9) through bottom plate (412) are fixed, are arranged on the other end
There is the magnet (512) coordinated with magnetic induction lock.
2. tennis as described in claim 1 receives and dispatches ball device, it is characterised in that：The ball collecting device includes at least two pieces of fixations
Plate (1), it is and vertical with fixed plate (1) and be uniformly plugged on shaft respectively with two fixed plates (1) fixed shaft (112)
(112) at least three pieces on are received ball plate (111), and the shaft (112) is with wheel (14) by transmitting band connection.
3. tennis as described in claim 1 receives and dispatches ball device, it is characterised in that：The dribbling device includes horizontal conveying belt
(2), vertical carousels (211), be arranged conveyor belt ends at least three idler wheels (212) and be arranged transmission belt surface it is more
Block baffle (213), described horizontal conveying belt (2) one end and vertical carousels (211) one end connect the same idler wheel jointly
(212), with wheel (14) by transmitting band connection, there are 5 between the baffle (213) and idler wheel (212) to arrive the idler wheel (212)
Angle of 10 degree of openings to vertical carousels (211).
4. tennis as described in claim 1 receives and dispatches ball device, it is characterised in that：The slider-crank mechanism includes moving mass
(3), horizon bar (311), drive link (312) and power wheel (313), the moving mass (3) are located in position-limiting drum (13), horizon bar
(311) one end is connect with moving mass (3), and the other end is hinged with drive link (312), and drive link (312) other end is hinged on
Power wheel (313) marginal position, the power wheel (313) connect with motor I (314).
5. tennis as described in claim 1 receives and dispatches ball device, it is characterised in that：The magnetic induction lock includes sequentially connected sets
The magnetoelectric transducer (6) on side plate (413) is set, the controller (7) in size of current and direction, and and movable plate can be controlled
(414) motor II (8) connected.
6. tennis as described in claim 1 receives and dispatches ball device, it is characterised in that：The receipts ball groove (11) is arranged in funnel-form
On vehicle frame.
7. tennis as described in claim 1 receives and dispatches ball device, it is characterised in that：The telescopic hole (1211) is less than tennis
Cross-sectional area is more than the cross-sectional area of moving mass (3).
8. tennis as claimed in claim 7 receives and dispatches ball device, it is characterised in that：Telescopic hole (1211) material is deformation material
Material.
9. tennis as described in claim 1 receives and dispatches ball device, it is characterised in that：The rotating cylinder (5) is with horizontal direction in big
It is less than or equal to 5 DEG C of angle in 0 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810521067.8A CN108704293A (en) | 2018-05-28 | 2018-05-28 | A kind of tennis transmitting-receiving ball device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810521067.8A CN108704293A (en) | 2018-05-28 | 2018-05-28 | A kind of tennis transmitting-receiving ball device |
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| Publication Number | Publication Date |
|---|---|
| CN108704293A true CN108704293A (en) | 2018-10-26 |
Family
ID=63870752
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810521067.8A Pending CN108704293A (en) | 2018-05-28 | 2018-05-28 | A kind of tennis transmitting-receiving ball device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109621368A (en) * | 2019-01-31 | 2019-04-16 | 重庆工程职业技术学院 | Tennis training field |
| CN109876397A (en) * | 2019-04-08 | 2019-06-14 | 洛阳师范学院 | A kind of interior vollyball is received training system |
| CN112169276A (en) * | 2020-09-18 | 2021-01-05 | 承德石油高等专科学校 | Table tennis collection device for physical training |
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| CN109621368A (en) * | 2019-01-31 | 2019-04-16 | 重庆工程职业技术学院 | Tennis training field |
| CN109621368B (en) * | 2019-01-31 | 2020-08-25 | 重庆工程职业技术学院 | Tennis training field |
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| CN109876397B (en) * | 2019-04-08 | 2024-01-12 | 洛阳师范学院 | Indoor volleyball meets training system |
| CN112169276A (en) * | 2020-09-18 | 2021-01-05 | 承德石油高等专科学校 | Table tennis collection device for physical training |
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