CN112807650A - Ball serving device with adjustable ball launching angle - Google Patents
Ball serving device with adjustable ball launching angle Download PDFInfo
- Publication number
- CN112807650A CN112807650A CN202110062406.2A CN202110062406A CN112807650A CN 112807650 A CN112807650 A CN 112807650A CN 202110062406 A CN202110062406 A CN 202110062406A CN 112807650 A CN112807650 A CN 112807650A
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- ball
- motor
- guide rail
- pipeline
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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
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2102/00—Application of clubs, bats, rackets or the like to the sporting activity ; particular sports involving the use of balls and clubs, bats, rackets, or the like
- A63B2102/02—Tennis
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Rollers For Roller Conveyors For Transfer (AREA)
Abstract
A ball serving device with an adjustable ball launching angle comprises a holder base, a conveying pipeline and a ball serving component; the ball serving component comprises a ball serving pipeline and a launching tube, a ball inlet for a ball to enter from the lower part is formed in the holder base, the ball inlet is connected with the inlet of the conveying pipeline through a second revolute pair, the outlet of the conveying pipeline is connected with the inlet of the ball serving pipeline through a first revolute pair, the outlet of the ball serving pipeline is connected with the inlet of the launching tube, and the ball is accelerated to be ejected from the launching tube; the axis of the second rotating pair is vertical, the axis of the first rotating pair is horizontal and perpendicular to the axis of the launching tube, and the inlet direction of the conveying pipeline faces downwards. The invention has large adjustable angle, small volume and low gravity center, and belongs to the field of physical training equipment.
Description
Technical Field
The invention relates to the field of physical training equipment, in particular to a ball serving device with an adjustable ball launching angle.
Background
Tennis balls are popular global ball games nowadays and are popular among people doing outdoor sports. With the rapid development of tennis, tennis courses and tennis specialties are developed in many colleges, and tennis is more and more popular with a wide range of students. Most students generally need at least one partner training during training, but the training is not performed or the training effect is not good due to the lack of partner training personnel. Therefore, many colleges and universities adopt tennis trainers to train students, however, the tennis trainers on the market basically adopt a structure that a ball is stored at the top of the machine and is sent to a ball serving part by natural gravity, and due to structural limitation, the adjustable range of a ball serving angle is not large, and the adjustment of a yaw angle needs to be manually performed, so that the tennis trainers on the market have large volume, the training effect is not ideal, and the angle adjustment function is incomplete.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention aims to: a ball launching angle adjustable ball launching device capable of freely adjusting a pitch angle and a yaw angle is provided.
In order to achieve the purpose, the invention adopts the following technical scheme:
a ball serving device with an adjustable ball launching angle comprises a holder base, a conveying pipeline and a ball serving component; the ball serving component comprises a ball serving pipeline and a launching tube, a ball inlet through which a ball passes is formed in the holder base, the ball inlet is connected with the inlet of the conveying pipeline through a second revolute pair, the outlet of the conveying pipeline is connected with the inlet of the ball serving pipeline through a first revolute pair, the outlet of the ball serving pipeline is connected with the inlet of the launching tube, and the ball is accelerated to be ejected in the launching tube; the axis of the second rotating pair is vertical, the axis of the first rotating pair is horizontal and perpendicular to the axis of the launching tube, and the inlet direction of the conveying pipeline faces downwards. After adopting this kind of structure, the below of cloud platform base can be located to the ball storehouse, only needs to give certain upwards driving force to the spheroid in the ball storehouse, and the spheroid can be followed the ball inlet and sent in conveying pipeline to the launching tube, and such structure focus is low, and is small, still can adjust the angle of pitch and the yaw angle of serving the ball part wantonly.
Preferably, the ball serving device with the adjustable ball launching angle further comprises a yaw angle adjusting system and a pitch angle adjusting system; the pitch angle adjusting system comprises a first motor, the first motor is connected with the ball serving component and drives the ball serving component to rotate around the axis of the first rotating pair, the yaw angle adjusting system comprises a second motor, and the second motor is connected with the conveying pipeline and drives the conveying pipeline to rotate around the axis of the second rotating pair. After the structure is adopted, the pitch angle and the yaw angle of the ball serving component can be adjusted through the pitch angle adjusting system and the yaw angle adjusting system.
Preferably, the ball serving device with the adjustable ball launching angle further comprises a holder support, the holder support is fixedly connected with the conveying pipeline, a first motor is mounted on the holder support, and the first motor is connected with a D-shaped shaft through a belt transmission mechanism and drives the D-shaped shaft to rotate; the ball serving component comprises an I-shaped frame and a fixing block, the I-shaped frame is fixedly connected with a ball serving pipeline, the I-shaped frame is I-shaped, the middle part of the I-shaped frame is provided with a shaft hole, the side surface of the shaft hole is provided with an opening, so that the cross section of the shaft hole is D-shaped, a D-shaped shaft is inserted into the shaft hole, and the fixing block covers the opening on the side surface of the shaft hole and is connected with the I-shaped frame; the rotating axis of the D-shaped shaft is the same as the axis of the first rotating pair.
Preferably, the belt transmission mechanism includes a first driving pulley, a first driven pulley; the output shaft of first motor is connected with first driving pulley, and first driving pulley passes through the belt and is connected with first driven pulley, first driven pulley and D shape axle fixed connection.
Preferably, the yaw angle adjusting system further comprises a second driving belt wheel and a second driven belt wheel, a second motor is mounted on the holder base, an output shaft of the second motor is connected with the second driving belt wheel, and the second driving belt wheel is connected with the second driven belt wheel through a belt; the second driven pulley is located conveying pipeline's entry below and with conveying pipeline fixed connection, and the goal on the cloud platform base is located the below of second driven pulley, and the second revolute pair is the table bearing, and the goal passes through the table bearing with the second driven pulley and is connected.
Preferably, the ball serving pipeline comprises a first rolling guide rail and a first sliding guide rail, and a ball serving channel for the ball to travel is formed between the first rolling guide rail and the first sliding guide rail; the conveying pipeline comprises a second rolling guide rail and a second sliding guide rail, and a conveying channel for the ball to move is formed between the second rolling guide rail and the second sliding guide rail; the first rolling guide rail and the second rolling guide rail both comprise supporting guide plates, the shapes of the supporting guide plates are matched with the trend of the ball, a plurality of bearings are arranged on the supporting guide plates along the trend of the ball, and the ball is in rolling contact with the supporting guide plates through the bearings; the first sliding guide rail and the second sliding guide rail respectively comprise a guide plate, and the shape of the guide plate is matched with the trend of the ball body, so that the ball body moves along the inner surface of the guide plate.
Preferably, the conveying pipeline comprises an upper pipe section and a lower pipe section, an inlet of the upper pipe section is connected with an outlet of the lower pipe section, an outlet of the upper pipe section is connected with an inlet of the service pipeline, and an inlet of the lower pipe section is connected with a ball inlet; the upper pipe section is in a transverse U shape, and the lower pipe section is in an arc shape of 90 degrees.
Preferably, the serving pipe is in the shape of a 90 ° arc.
Preferably, the service part also comprises a service bracket, and the service pipeline is fixedly connected with the service bracket; the pitching support comprises a top plate, a bottom plate and an aluminum column, wherein the top plate and the bottom plate are both fan-shaped hollow plates, the aluminum column is supported between the top plate and the bottom plate, a first sliding guide rail is installed on the top plate and the bottom plate, and a first rolling guide rail is arranged between the top plate and the bottom plate and is fixedly connected with the aluminum column.
Preferably, the service part further comprises a service friction wheel and a service motor, the service motor is connected with the service friction wheel and drives the service friction wheel to rotate, the number of the service friction wheels is 2, and the 2 service friction wheels are embedded into the launching tube from the left side and the right side of the launching tube and drive the ball body in the launching tube to eject.
The top plate and the bottom plate both extend outwards to form connecting plates, and the I-shaped frame is arranged between the two connecting plates and is fixedly connected with the connecting plates.
The tripod head support comprises a support bottom plate, a left side plate and a right side plate, wherein the left side plate and the right side plate are vertically and fixedly connected with the support bottom plate; the first driving belt wheel and the first driven belt wheel are both arranged on the right side plate.
In summary, the present invention has the following advantages: the pitching angle has the advantages of extremely large adjustable range, capability of automatically adjusting a pitch angle and a yaw angle, small volume, low gravity center, economy, practicality, and simple and reliable control.
Drawings
Fig. 1 is a schematic view of the overall structure of a ball launching device with adjustable ball launching angle.
Fig. 2 is a schematic view of the structure of the ball serving member.
Fig. 3 is a schematic structural diagram of a holder support, a conveying pipeline and a pitch angle adjusting system.
Fig. 4 is a schematic view of the structure of the holder base.
Fig. 5 is a schematic diagram of a ball serving device with an adjustable ball launching angle.
Fig. 6 is a schematic structural diagram of a ball serving component, a holder bracket, a conveying pipeline and a pitch angle adjusting system.
The device comprises a ball serving friction wheel 1, a ball serving motor 2, a top plate 3, a transmitting tube 4, a first rolling guide rail 5, an aluminum column 6, a first sliding guide rail 7, a first driven pulley 8, a D-shaped shaft 9, a first driving pulley 10, a first motor 11, a support bottom plate 12, a left side plate 13, a top tube section 14, a bottom tube section 15, an aluminum frame 16, a base bottom plate 17, a table bearing 18, a second driven pulley 19, a shaft part 20, a second driving pulley 21, a second motor 22, a right side plate 23, an I-shaped frame 24, a fixing block 25 and a shaft hole 26.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments.
A ball serving device with an adjustable ball launching angle comprises a holder base, a conveying pipeline and a ball serving component; the ball serving component comprises a ball serving pipeline and a launching tube, a ball inlet through which a ball passes is formed in the holder base, the ball inlet is connected with the inlet of the conveying pipeline through a second revolute pair, the outlet of the conveying pipeline is connected with the inlet of the ball serving pipeline through a first revolute pair, the outlet of the ball serving pipeline is connected with the inlet of the launching tube, and the ball is accelerated to be ejected in the launching tube; the axis of the second rotating pair is vertical, the axis of the first rotating pair is horizontal and perpendicular to the axis of the launching tube, and the inlet direction of the conveying pipeline faces downwards. After adopting this kind of structure, the below of cloud platform base can be located to the ball storehouse, only needs to give certain upwards driving force to the spheroid in the ball storehouse, and the spheroid can be followed the ball inlet and sent in conveying pipeline to the launching tube, and such structure focus is low, and is small, still can adjust the angle of pitch and the yaw angle of serving the ball part wantonly.
The pitching device with the adjustable sphere launching angle further comprises a yaw angle adjusting system and a pitch angle adjusting system; the pitch angle adjusting system comprises a first motor, the first motor is connected with the ball serving component and drives the ball serving component to rotate around the axis of the first rotating pair, the yaw angle adjusting system comprises a second motor, and the second motor is connected with the conveying pipeline and drives the conveying pipeline to rotate around the axis of the second rotating pair. After the structure is adopted, the pitch angle and the yaw angle of the ball serving component can be adjusted through the pitch angle adjusting system and the yaw angle adjusting system.
The ball serving device with the adjustable sphere launching angle further comprises a holder support, the holder support is fixedly connected with a conveying pipeline, a first motor is installed on the holder support, and the first motor is connected with a D-shaped shaft through a belt transmission mechanism and drives the D-shaped shaft to rotate; the ball serving component comprises an I-shaped frame and a fixing block, the I-shaped frame is fixedly connected with a ball serving pipeline, the I-shaped frame is I-shaped, the middle part of the I-shaped frame is provided with a shaft hole, the side surface of the shaft hole is provided with an opening, so that the cross section of the shaft hole is D-shaped, a D-shaped shaft is inserted into the shaft hole, and the fixing block covers the opening on the side surface of the shaft hole and is connected with the I-shaped frame; the rotating axis of the D-shaped shaft is the same as the axis of the first rotating pair.
The belt transmission mechanism comprises a first driving belt wheel and a first driven belt wheel; the output shaft of first motor is connected with first driving pulley, and first driving pulley passes through the belt and is connected with first driven pulley, first driven pulley and D shape axle fixed connection.
The yaw angle adjusting system also comprises a second driving belt wheel and a second driven belt wheel, a second motor is arranged on the holder base, the output shaft of the second motor is connected with the second driving belt wheel, and the second driving belt wheel is connected with the second driven belt wheel through a belt; the second driven pulley is located conveying pipeline's entry below and with conveying pipeline fixed connection, and the goal on the cloud platform base is located the below of second driven pulley, and the second revolute pair is the table bearing, and the goal passes through the table bearing with the second driven pulley and is connected.
The ball serving pipeline comprises a first rolling guide rail and a first sliding guide rail, and a ball serving channel for the ball to move is formed between the first rolling guide rail and the first sliding guide rail; the conveying pipeline comprises a second rolling guide rail and a second sliding guide rail, and a conveying channel for the ball to move is formed between the second rolling guide rail and the second sliding guide rail; the first rolling guide rail and the second rolling guide rail both comprise supporting guide plates, the shapes of the supporting guide plates are matched with the trend of the ball, a plurality of bearings are arranged on the supporting guide plates along the trend of the ball, and the ball is in rolling contact with the supporting guide plates through the bearings; the first sliding guide rail and the second sliding guide rail respectively comprise a guide plate, and the shape of the guide plate is matched with the trend of the ball body, so that the ball body moves along the inner surface of the guide plate.
The conveying pipeline comprises an upper pipe section and a lower pipe section, the inlet of the upper pipe section is connected with the outlet of the lower pipe section, the outlet of the upper pipe section is connected with the inlet of the service pipeline, and the inlet of the lower pipe section is connected with the ball inlet; the upper pipe section is in a transverse U shape, and the lower pipe section is in an arc shape of 90 degrees.
The serving pipeline is in an arc shape of 90 degrees.
The service part also comprises a service bracket, and the service pipeline is fixedly connected with the service bracket; the pitching support comprises a top plate, a bottom plate and an aluminum column, wherein the top plate and the bottom plate are both fan-shaped hollow plates, the aluminum column is supported between the top plate and the bottom plate, a first sliding guide rail is installed on the top plate and the bottom plate, and a first rolling guide rail is arranged between the top plate and the bottom plate and is fixedly connected with the aluminum column.
The service part still includes service friction wheel, service motor, and the service motor is connected and drive service friction wheel rotatory with service friction wheel, and the quantity of service friction wheel is 2, and 2 service friction wheels are from the left and right sides embedding launching tube of launching tube and drive the spheroid in the launching tube and jet out.
The top plate and the bottom plate both extend outwards to form connecting plates, and the I-shaped frame is arranged between the two connecting plates and is fixedly connected with the connecting plates.
The tripod head support comprises a support bottom plate, a left side plate and a right side plate, wherein the left side plate and the right side plate are vertically and fixedly connected with the support bottom plate; the first driving belt wheel and the first driven belt wheel are both arranged on the right side plate.
The reduction ratio of the first driving pulley to the first driven pulley is 1: 3.5. the first driving belt wheel is connected with an output shaft of the first motor through a screw.
The holder base comprises an aluminum frame, a base bottom plate and a supporting column, the base bottom plate is fixed on the aluminum frame, the dining table bearing comprises an inner rotor and an outer rotor, the outer rotor is connected with the base bottom plate through the supporting column, and the inner rotor is connected with a second driven belt wheel. The inner circle of the second driven belt wheel is further connected with a shaft, the ball body penetrates through the bearing and the shaft from the ball inlet to enter the conveying pipeline, and the inner wall of the shaft is subjected to smoothing treatment.
When the ball ejecting device is used specifically, after the ball ejecting device is powered on, the ball body is pushed by external force to enter the conveying pipeline from the ball inlet of the holder base upwards, the power pushes the ball body upwards to enter the lower pipe section of the holder support through the shaft part and then enter the upper pipe section, so that the ball body reaches the ball ejecting pipeline above the ball ejecting pipeline, enters the ejecting area of the ejecting pipe along the ball ejecting pipeline and is ejected finally. In addition, the route of the ball body passes through the first rotating pair and the second rotating pair, so that the ball body does not influence the running of the ball body in the pipeline no matter how the ball serving component and the conveying pipeline rotate.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. The utility model provides a ball launching angle adjustable device of pitching which characterized in that: comprises a holder base, a conveying pipeline and a serving component;
the ball serving component comprises a ball serving pipeline and a launching tube, a ball inlet through which a ball passes is formed in the holder base, the ball inlet is connected with the inlet of the conveying pipeline through a second revolute pair, the outlet of the conveying pipeline is connected with the inlet of the ball serving pipeline through a first revolute pair, the outlet of the ball serving pipeline is connected with the inlet of the launching tube, and the ball is accelerated to be ejected in the launching tube;
the inlet direction of the conveying pipeline faces downwards, the axis of the second rotating pair is vertical, and the axis of the first rotating pair is horizontal and perpendicular to the axis of the launching tube.
2. The ball launching device with adjustable ball launching angle as defined in claim 1, wherein: the device also comprises a yaw angle adjusting system and a pitch angle adjusting system;
the pitch angle adjusting system comprises a first motor, the first motor is connected with the ball serving component and drives the ball serving component to rotate around the axis of the first rotating pair, the yaw angle adjusting system comprises a second motor, and the second motor is connected with the conveying pipeline and drives the conveying pipeline to rotate around the axis of the second rotating pair.
3. A ball launching device with adjustable ball launching angle as in claim 2, wherein: the device comprises a conveying pipeline, a first motor, a second motor, a third motor, a fourth motor and a fourth motor, wherein the conveying pipeline is fixedly connected with the first motor;
the ball serving component comprises an I-shaped frame and a fixing block, the I-shaped frame is fixedly connected with a ball serving pipeline, the I-shaped frame is I-shaped, the middle part of the I-shaped frame is provided with a shaft hole, the side surface of the shaft hole is provided with an opening, so that the cross section of the shaft hole is D-shaped, a D-shaped shaft is inserted into the shaft hole, and the fixing block covers the opening on the side surface of the shaft hole and is connected with the I-shaped frame;
the rotating axis of the D-shaped shaft is the same as the axis of the first rotating pair.
4. A ball launching device with adjustable ball launching angle as in claim 3, wherein: the belt transmission mechanism comprises a first driving belt wheel and a first driven belt wheel; the output shaft of first motor is connected with first driving pulley, and first driving pulley passes through the belt and is connected with first driven pulley, first driven pulley and D shape axle fixed connection.
5. A ball launching device with adjustable ball launching angle as in claim 2, wherein: the yaw angle adjusting system also comprises a second driving belt wheel and a second driven belt wheel, a second motor is arranged on the holder base, the output shaft of the second motor is connected with the second driving belt wheel, and the second driving belt wheel is connected with the second driven belt wheel through a belt;
the second driven pulley is located conveying pipeline's entry below and with conveying pipeline fixed connection, and the goal on the cloud platform base is located the below of second driven pulley, and the second revolute pair is the table bearing, and the goal passes through the table bearing with the second driven pulley and is connected.
6. The ball launching device with adjustable ball launching angle as defined in claim 1, wherein: the ball serving pipeline comprises a first rolling guide rail and a first sliding guide rail, and a ball serving channel for the ball to move is formed between the first rolling guide rail and the first sliding guide rail; the conveying pipeline comprises a second rolling guide rail and a second sliding guide rail, and a conveying channel for the ball to move is formed between the second rolling guide rail and the second sliding guide rail;
the first rolling guide rail and the second rolling guide rail both comprise supporting guide plates, the shapes of the supporting guide plates are matched with the trend of the ball, a plurality of bearings are arranged on the supporting guide plates along the trend of the ball, and the ball is in rolling contact with the supporting guide plates through the bearings; the first sliding guide rail and the second sliding guide rail respectively comprise a guide plate, and the shape of the guide plate is matched with the trend of the ball body, so that the ball body moves along the inner surface of the guide plate.
7. The ball launching device with adjustable ball launching angle as defined in claim 1, wherein: the conveying pipeline comprises an upper pipe section and a lower pipe section, the inlet of the upper pipe section is connected with the outlet of the lower pipe section, the outlet of the upper pipe section is connected with the inlet of the service pipeline, and the inlet of the lower pipe section is connected with the ball inlet;
the upper pipe section is in a transverse U shape, and the lower pipe section is in an arc shape of 90 degrees.
8. The ball launching device with adjustable ball launching angle as defined in claim 6, wherein: the serving pipeline is in an arc shape of 90 degrees.
9. The ball launching device with adjustable ball launching angle as defined in claim 8, wherein: the service part also comprises a service bracket, and the service pipeline is fixedly connected with the service bracket;
the pitching support comprises a top plate, a bottom plate and an aluminum column, wherein the top plate and the bottom plate are both fan-shaped hollow plates, the aluminum column is supported between the top plate and the bottom plate, a first sliding guide rail is installed on the top plate and the bottom plate, and a first rolling guide rail is arranged between the top plate and the bottom plate and is fixedly connected with the aluminum column.
10. The ball launching device with adjustable ball launching angle as defined in claim 1, wherein: the service part still includes service friction wheel, service motor, and the service motor is connected and drive service friction wheel rotatory with service friction wheel, and the quantity of service friction wheel is 2, and 2 service friction wheels are from the left and right sides embedding launching tube of launching tube and drive the spheroid in the launching tube and jet out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110062406.2A CN112807650A (en) | 2021-01-18 | 2021-01-18 | Ball serving device with adjustable ball launching angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110062406.2A CN112807650A (en) | 2021-01-18 | 2021-01-18 | Ball serving device with adjustable ball launching angle |
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| CN112807650A true CN112807650A (en) | 2021-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110062406.2A Pending CN112807650A (en) | 2021-01-18 | 2021-01-18 | Ball serving device with adjustable ball launching angle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101147040A (en) * | 2005-03-21 | 2008-03-19 | 张和 | Digitally controlled, user programmable and field relocatable table tennis robot |
| US20130109510A1 (en) * | 2011-11-01 | 2013-05-02 | Douglas L. Boehner | System and Method to Pitch Fooballs |
| CN208968354U (en) * | 2018-08-24 | 2019-06-11 | 深圳贝尔创意科教有限公司 | A kind of feed machanism for trigger mechanism |
| CN110538443A (en) * | 2019-08-09 | 2019-12-06 | 西交利物浦大学 | Table tennis training robot with visual identification function |
| CN211752131U (en) * | 2019-12-09 | 2020-10-27 | 戴心仪 | Rope skipping handle angle adjusting device |
| CN211798697U (en) * | 2019-12-02 | 2020-10-30 | 太原工业学院 | Table tennis service robot |
| CN214485571U (en) * | 2021-01-18 | 2021-10-26 | 华南理工大学 | Ball serving device with large ball serving angle adjusting range |
-
2021
- 2021-01-18 CN CN202110062406.2A patent/CN112807650A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101147040A (en) * | 2005-03-21 | 2008-03-19 | 张和 | Digitally controlled, user programmable and field relocatable table tennis robot |
| US20130109510A1 (en) * | 2011-11-01 | 2013-05-02 | Douglas L. Boehner | System and Method to Pitch Fooballs |
| CN208968354U (en) * | 2018-08-24 | 2019-06-11 | 深圳贝尔创意科教有限公司 | A kind of feed machanism for trigger mechanism |
| CN110538443A (en) * | 2019-08-09 | 2019-12-06 | 西交利物浦大学 | Table tennis training robot with visual identification function |
| CN211798697U (en) * | 2019-12-02 | 2020-10-30 | 太原工业学院 | Table tennis service robot |
| CN211752131U (en) * | 2019-12-09 | 2020-10-27 | 戴心仪 | Rope skipping handle angle adjusting device |
| CN214485571U (en) * | 2021-01-18 | 2021-10-26 | 华南理工大学 | Ball serving device with large ball serving angle adjusting range |
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