CN113041580A - Negative pressure formula table tennis automatic pickup dolly - Google Patents
Negative pressure formula table tennis automatic pickup dolly Download PDFInfo
- Publication number
- CN113041580A CN113041580A CN202110443214.6A CN202110443214A CN113041580A CN 113041580 A CN113041580 A CN 113041580A CN 202110443214 A CN202110443214 A CN 202110443214A CN 113041580 A CN113041580 A CN 113041580A
- Authority
- CN
- China
- Prior art keywords
- ball
- collection
- suction
- table tennis
- bin
- 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.)
- Granted
Links
Images
Classifications
-
- 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
- A63B47/021—Devices 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
-
- 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
- A63B47/021—Devices 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
- A63B2047/022—Autonomous machines which find their own way around the playing surface
-
- 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
- A63B2102/16—Table tennis
Abstract
The invention discloses a negative pressure type automatic table tennis ball picking trolley which comprises a motion chassis, a ball suction and collection device arranged on the motion chassis and a ball storage device positioned below the ball suction and collection device, wherein the ball suction and collection device comprises a suction wheel, a ball storage wheel and a ball storage wheel; the ball suction and collection device comprises a ball suction and collection bin, a ball conveying channel formed by forward extending of an inlet at the front end of the ball suction and collection bin, and a horn-shaped ball collection port arranged at the front end of the ball conveying channel; the ball suction and collection bin comprises a shell, a plurality of ball collection chambers which are distributed in the shell in parallel, a vacuum pump for vacuumizing the ball collection chambers and branch pipelines for communicating the vacuum pump with the ball collection chambers; the bottom of the shell is hinged with a baffle plate which is controlled to be opened and closed through a multi-link mechanism; the ball storage device comprises a ball receiving bin which is arranged below the ball suction and collection bin in a drawable manner; the motion chassis comprises a frame and a plurality of Mecanum wheel sets arranged on the frame; the trolley can realize automatic, intelligent, safe and efficient table tennis automatic picking, so that the table tennis picking time in the table tennis training process is saved, and the table tennis picking efficiency and the table tennis training experience are improved.
Description
Technical Field
The invention relates to the field of automatic table tennis ball picking equipment, in particular to a negative pressure type automatic table tennis ball picking trolley.
Background
According to statistics, the number of people contacting table tennis in China currently is about 3 hundred million, about 1000 million of people often participate in the game, and the consumption of table tennis in China is increased along with the propagation of table tennis. When practicing table tennis, a large amount of table tennis drop to ground, and the scattering is everywhere, picks up the ball time and has occupied most time of table tennis training, has reduced the good experience of table tennis training, and the table tennis is trampled easily, reduces table tennis life, can cause the influence to the personnel's of practicing table tennis safety simultaneously.
Disclosure of Invention
Therefore, the invention aims to provide the table tennis ball autonomous picking trolley which can automatically, intelligently, safely and efficiently pick table tennis balls, so that the service life of the table tennis balls is prolonged, the damage caused by scattering of the table tennis balls in the exercise process is avoided, and the recycling speed of the table tennis balls in the court is accelerated.
The invention discloses a negative pressure type automatic table tennis ball picking trolley which comprises a motion chassis, a ball suction and collection device arranged on the motion chassis and a ball storage device positioned below the ball suction and collection device;
the ball suction and collection device comprises a ball suction and collection bin, a ball conveying channel formed by forward extending of an inlet at the front end of the ball suction and collection bin, and a horn-shaped ball collection port arranged at the front end of the ball conveying channel; the ball suction and collection bin comprises a shell, a plurality of ball collection chambers which are distributed in the shell in parallel, a vacuum pump for pumping negative pressure to the ball collection chambers, and branch pipelines for communicating the vacuum pump with the ball collection chambers; the bottom of the shell is hinged with a baffle plate which is controlled to be opened and closed through a multi-link mechanism;
the ball storage device comprises a ball receiving bin which is arranged below the ball suction and collection bin in a drawable manner;
the motion chassis comprises a frame and a plurality of Mecanum wheel sets arranged on the frame.
Further, a camera for visual navigation is arranged on the front side of the horn-shaped ball collecting port; the bottom of the ball suction and collection bin is provided with a plurality of photoelectric sensors which are in one-to-one correspondence with the ball collection chambers through a fixing frame; the photoelectric sensor is used for counting the table tennis balls falling into the ball receiving bin from the ball collecting chamber.
Furthermore, the multi-link mechanism is connected with a return spring to keep the baffle plate normally closed; an electromagnet I is arranged outside the suction ball collecting bin; the electromagnet I is used for driving the multi-link mechanism to act so as to open the baffle.
Furthermore, an electromagnet II is arranged at the front part of the ball receiving bin and used for adsorbing the ball receiving bin on the frame; pulleys for reducing the sliding resistance of the ball catching bin are arranged on two sides of the ball catching bin; a handle for pulling the ball receiving bin out is arranged at the rear part of the ball receiving bin.
Furthermore, Mecanum wheel group is including the driving motor who passes through motor frame fixed mounting in the frame and the Mecanum wheel of being connected through shaft coupling and driving motor pivot.
Further, a ball blocking chain is arranged at the front part of the frame; the ball blocking chain comprises a U-shaped chain mounting frame and chain rings uniformly distributed on the chain mounting frame; the frame is provided with a fixing frame for fixedly mounting the ball suction and collection device.
Furthermore, an ultrasonic sensor for detecting the distance of the obstacle is arranged on the front side of the frame.
The invention has the beneficial effects that: when the negative pressure type table tennis automatic picking trolley carries out picking operation, the motion chassis bears the ball suction and collection device and the ball storage device to move along the ground; the vacuum pump works to enable the ball suction and collection bin and the trumpet-shaped ball collection opening communicated with the ball suction and collection bin through the ball conveying channel to generate negative pressure, the table tennis scattered on the ground is conveyed to a ball collection chamber in the ball suction and collection bin along the ball conveying channel by utilizing the negative pressure, and the width of the ball collection chamber can only contain one table tennis; then the baffle at the bottom of the ball suction and collection chamber is opened, and the table tennis in the ball collection chamber falls into the ball receiving chamber under the action of self weight; the ball receiving bin is of a drawable structure and can be drawn out after collection.
Drawings
The invention is further described below with reference to the figures and examples.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIGS. 2(a) and 2(b) are schematic structural views of a suction ball collecting device according to the present invention;
FIG. 3 is a schematic structural view of a suction ball collecting chamber according to the present invention;
FIGS. 4(a) and 4(b) are schematic structural views of the exercise chassis of the present invention;
FIG. 5 is a schematic diagram of a Mecanum wheel set of the present invention;
fig. 6 is a schematic structural diagram of the ball receiving bin of the present invention.
Detailed Description
FIG. 1 is a schematic structural view of the present invention; as shown in the figure, the negative pressure type automatic table tennis ball picking trolley comprises a motion chassis 2, a ball suction and collection device 1 mounted on the motion chassis 2, and a ball storage device 3 positioned below the ball suction and collection device 1;
as shown in fig. 3, the suction ball collecting device 1 comprises a suction ball collecting bin 1-2, a ball conveying channel 1-1 formed by extending a front end inlet of the suction ball collecting bin 1-2 forward, and a trumpet-shaped ball collecting port arranged at the front end of the ball conveying channel 1-1; the suction ball collecting bin 1-2 comprises a shell 1-2-1, five ball collecting chambers which are distributed in the shell 1-2-1 in parallel, a vacuum pump 1-2-2 for pumping negative pressure to the ball collecting chambers, and branch pipelines 1-2-3 for communicating the vacuum pump 1-2-2 with the ball collecting chambers; the bottom of the shell 1-2-1 is hinged with a baffle 1-4 which is controlled to be opened and closed through a multi-link mechanism 1-3, and the baffle 1-4 is hinged with the bottom of the shell through a hinge 1-5; the ball storage device 3 comprises a ball receiving bin 3-1 which is arranged below the ball suction and collection bin 1-2 in a drawable manner; the motion chassis 2 comprises a frame 2-1 and four Mecanum wheel sets 2-3 arranged on the frame 2-1.
When the negative pressure type table tennis automatic picking trolley of the embodiment carries out picking operation, the motion chassis 2 bears the ball suction and collection device 1 and the ball storage device 3 to move along the ground; the vacuum pump works to enable the ball suction and collection bin 1-2 and the trumpet-shaped ball collection opening communicated with the ball suction and collection bin through the ball conveying channel 1-1 to generate negative pressure, the table tennis scattered on the ground is conveyed to a ball collection chamber in the ball suction and collection bin 1-2 along the ball conveying channel 1-1 by utilizing the negative pressure, and the width of the ball collection chamber can only accommodate one table tennis; then opening a baffle plate 1-4 at the bottom of a ball suction and collection chamber 1-2, and dropping table tennis balls in the ball collection chamber into a ball receiving chamber 3-1 under the action of self weight; the ball receiving bin 3-1 is arranged to be a drawable structure, and can be drawn out after collection.
As shown in fig. 2, in the present embodiment, a camera 1-10 for visual navigation is disposed at the front side of the trumpet-shaped ball collecting port; shooting the distribution conditions of table tennis balls and obstacles on the bottom surface through cameras 1-10, controlling the movement of the movement chassis 2 by using the existing visual navigation control system, naturally arranging a control panel 2-5 on the frame 2-1, receiving signals of each sensor by using the control panel 2-5, and controlling the operation of each part; the bottom of the ball sucking and collecting bin 1-2 is provided with five photoelectric sensors 1-8 which are in one-to-one correspondence with the ball collecting chambers through fixing frames 1-9; the photoelectric sensor 1-8 is used for counting the table tennis balls falling into the ball receiving bin 3-1 from the ball collecting chamber and preventing the collected table tennis balls from being scattered out of the ball receiving bin 3-1 too much.
In the embodiment, the multi-link mechanism 1-3 comprises three connecting rods which are sequentially hinged, the last connecting rod is hinged to the baffle plate 1-4, and a return spring 1-7 is connected between the first connecting rod and the ball suction and collection bin 1-2 to keep the baffle plate 1-4 normally closed; electromagnets I1-6 are arranged outside the suction ball collecting bin 1-2; the electromagnet I1-6 is fixedly arranged at the top of the shell of the ball suction and collection bin 1-2, the end part of a push rod of the electromagnet I1-6 is fixed on a cross rod, the two ends of the cross rod are respectively connected with the multi-link mechanism of the ball suction and collection bin 1-2, the multi-link mechanism 1-3 can be driven to act through the extension and contraction of the push rod of the electromagnet I1-6 to enable the baffle plate 1-4 to be opened, when a table tennis is adsorbed in the ball collection chamber, the electromagnet is electrified to drive the multi-link mechanism to act, the elastic force of the reset spring 1-7 is overcome to open the baffle plate 1-4, and the table tennis is enabled.
As shown in fig. 6, in this embodiment, an electromagnet ii is disposed at the front of the ball receiving bin 3-1, and the electromagnet ii is used for adsorbing the ball receiving bin 3-1 to the frame 2-1; in the picking process of table tennis, the electromagnet II is electrified, so that the ball receiving bin 3-1 can be stably adsorbed on the frame 2-1, and the sliding of the ball receiving bin is avoided; pulleys for reducing the sliding resistance of the ball receiving bin 3-1 are arranged on the two sides of the ball receiving bin; a handle for pulling the ball receiving bin 3-1 out is arranged at the rear part of the ball receiving bin 3-1, and when the ball receiving bin 3-1 needs to be pulled out, the electromagnet II is powered off.
In the embodiment, as shown in fig. 5, the mecanum wheel set 2-3 includes a driving motor 2-3-1 fixedly mounted on the frame 2-1 through a motor frame 2-3-2, and a mecanum wheel 2-3-4 rotatably connected to the driving motor 2-3-1 through a coupling 2-3-3.
In the embodiment, the front part of the frame 2-1 is provided with a ball blocking chain 2-8; the ball blocking chains 2-8 comprise U-shaped chain mounting frames and chain rings uniformly distributed on the chain mounting frames, the ball blocking chains 2-8 can block table tennis balls, the phenomenon that the table tennis balls which do not enter the ball suction and collection bins 1-2 in time influence the running of the trolley is avoided, and meanwhile the table tennis balls can be collected together; the frame 2-1 is provided with a fixing frame 2-2 for fixedly mounting the ball suction and collection device 1.
In the embodiment, the ultrasonic sensor 2-4 for detecting the distance of the obstacle is arranged on the front side of the frame 2-1, and information collected by the ultrasonic sensor 2-4 is sent to the control board 2-5, so that the trolley can realize active obstacle avoidance; the frame 2-1 should of course also be equipped with small batteries 2-7 for powering the respective control boards 2-5 and sensors and with large batteries 2-6 for powering the components other than the control boards 2-5 and sensors.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (7)
1. The utility model provides a negative pressure formula table tennis automatic pickup dolly which characterized in that: the sports equipment comprises a sports chassis, a ball suction and collection device arranged on the sports chassis and a ball storage device positioned below the ball suction and collection device;
the ball suction and collection device comprises a ball suction and collection bin, a ball conveying channel formed by forward extending of an inlet at the front end of the ball suction and collection bin, and a horn-shaped ball collection port arranged at the front end of the ball conveying channel; the ball suction and collection bin comprises a shell, a plurality of ball collection chambers which are distributed in the shell in parallel, a vacuum pump for vacuumizing the ball collection chambers and branch pipelines for communicating the vacuum pump with the ball collection chambers; the bottom of the shell is hinged with a baffle plate which is controlled to be opened and closed through a multi-link mechanism;
the ball storage device comprises a ball receiving bin which is arranged below the ball suction and collection bin in a drawable manner;
the motion chassis comprises a frame and a plurality of Mecanum wheel sets arranged on the frame.
2. The negative pressure type table tennis ball automatic picking trolley according to claim 1, wherein: a camera for visual navigation is arranged on the front side of the horn-shaped ball collecting port; the bottom of the ball suction and collection bin is provided with a plurality of photoelectric sensors which are in one-to-one correspondence with the ball collection chambers through a fixing frame; the photoelectric sensor is used for counting the table tennis balls falling into the ball receiving bin from the ball collecting chamber.
3. The negative pressure type table tennis ball automatic picking trolley according to claim 2, characterized in that: the multi-link mechanism is connected with a return spring to keep the baffle plate normally closed; an electromagnet I is arranged outside the suction ball collecting bin; the electromagnet I is used for driving the multi-link mechanism to act so as to open the baffle.
4. The negative pressure type table tennis ball automatic picking trolley according to claim 3, characterized in that: the front part of the ball receiving bin is provided with an electromagnet II, and the electromagnet II is used for adsorbing the ball receiving bin on the frame; pulleys for reducing the sliding resistance of the ball catching bin are arranged on two sides of the ball catching bin; a handle for pulling the ball receiving bin out is arranged at the rear part of the ball receiving bin.
5. The negative pressure type table tennis ball automatic picking trolley according to claim 4, wherein: the Mecanum wheel set comprises a driving motor fixedly mounted on the frame through a motor frame and Mecanum wheels connected with a rotating shaft of the driving motor through a coupler.
6. The negative pressure type table tennis ball automatic picking trolley according to claim 5, wherein: the front part of the frame is provided with a ball blocking chain; the ball blocking chain comprises a U-shaped chain mounting frame and chain rings uniformly distributed on the chain mounting frame; the frame is provided with a fixing frame for fixedly mounting the ball suction and collection device.
7. The negative pressure type table tennis ball automatic picking trolley according to claim 6, wherein: and an ultrasonic sensor for detecting the distance of the obstacle is arranged on the front side of the frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110443214.6A CN113041580B (en) | 2021-04-23 | 2021-04-23 | Negative pressure formula table tennis automatic pickup dolly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110443214.6A CN113041580B (en) | 2021-04-23 | 2021-04-23 | Negative pressure formula table tennis automatic pickup dolly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113041580A true CN113041580A (en) | 2021-06-29 |
| CN113041580B CN113041580B (en) | 2022-05-24 |
Family
ID=76520171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110443214.6A Active CN113041580B (en) | 2021-04-23 | 2021-04-23 | Negative pressure formula table tennis automatic pickup dolly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113041580B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19715886A1 (en) * | 1997-04-21 | 1997-12-04 | Anton Piroth | Tennis-ball collector |
| US6077170A (en) * | 1998-06-16 | 2000-06-20 | Hawkins; Roy | Golf ball retrieval attachment |
| CN101439227A (en) * | 2007-11-23 | 2009-05-27 | 富准精密工业(深圳)有限公司 | Robot for picking up table tennis |
| CN102166406A (en) * | 2011-02-16 | 2011-08-31 | 桂林电子科技大学 | Intelligent aspirating type automatic ball picking cart |
| CN102908763A (en) * | 2012-10-19 | 2013-02-06 | 广东工业大学 | Automatic ball pick-up robot |
| WO2016114616A1 (en) * | 2015-01-15 | 2016-07-21 | 조병구 | Ball game training apparatus |
| CN106075857A (en) * | 2016-07-27 | 2016-11-09 | 陈小方 | A kind of physical culture vollyball efficient supplemental training device |
| CN206167802U (en) * | 2016-11-01 | 2017-05-17 | 杨立业 | Robot is picked up to table tennis |
| CN107745834A (en) * | 2017-11-22 | 2018-03-02 | 赵斌 | A kind of storage shunting device of granular fertilizers |
| CN109107120A (en) * | 2018-10-30 | 2019-01-01 | 陕西理工大学 | A kind of tennis court automatically picking up balls robot |
| CN211273450U (en) * | 2019-08-28 | 2020-08-18 | 马广彬 | High-efficient table tennis ball suction device |
| CN211935453U (en) * | 2020-03-25 | 2020-11-17 | 重庆科技学院 | Remote control type table tennis ball picking trolley |
| CN212016646U (en) * | 2020-04-09 | 2020-11-27 | 成都信息工程大学 | Intelligent table tennis ball picking robot |
| CN112604247A (en) * | 2020-11-24 | 2021-04-06 | 合肥工业大学 | Robot is collected to tennis |
| CN112604257A (en) * | 2020-11-30 | 2021-04-06 | 温州大学 | Volleyball serving device for sports |
-
2021
- 2021-04-23 CN CN202110443214.6A patent/CN113041580B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19715886A1 (en) * | 1997-04-21 | 1997-12-04 | Anton Piroth | Tennis-ball collector |
| US6077170A (en) * | 1998-06-16 | 2000-06-20 | Hawkins; Roy | Golf ball retrieval attachment |
| CN101439227A (en) * | 2007-11-23 | 2009-05-27 | 富准精密工业(深圳)有限公司 | Robot for picking up table tennis |
| CN102166406A (en) * | 2011-02-16 | 2011-08-31 | 桂林电子科技大学 | Intelligent aspirating type automatic ball picking cart |
| CN102908763A (en) * | 2012-10-19 | 2013-02-06 | 广东工业大学 | Automatic ball pick-up robot |
| WO2016114616A1 (en) * | 2015-01-15 | 2016-07-21 | 조병구 | Ball game training apparatus |
| CN106075857A (en) * | 2016-07-27 | 2016-11-09 | 陈小方 | A kind of physical culture vollyball efficient supplemental training device |
| CN206167802U (en) * | 2016-11-01 | 2017-05-17 | 杨立业 | Robot is picked up to table tennis |
| CN107745834A (en) * | 2017-11-22 | 2018-03-02 | 赵斌 | A kind of storage shunting device of granular fertilizers |
| CN109107120A (en) * | 2018-10-30 | 2019-01-01 | 陕西理工大学 | A kind of tennis court automatically picking up balls robot |
| CN211273450U (en) * | 2019-08-28 | 2020-08-18 | 马广彬 | High-efficient table tennis ball suction device |
| CN211935453U (en) * | 2020-03-25 | 2020-11-17 | 重庆科技学院 | Remote control type table tennis ball picking trolley |
| CN212016646U (en) * | 2020-04-09 | 2020-11-27 | 成都信息工程大学 | Intelligent table tennis ball picking robot |
| CN112604247A (en) * | 2020-11-24 | 2021-04-06 | 合肥工业大学 | Robot is collected to tennis |
| CN112604257A (en) * | 2020-11-30 | 2021-04-06 | 温州大学 | Volleyball serving device for sports |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113041580B (en) | 2022-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203790534U (en) | Counting tennis ball picker | |
| CN209997153U (en) | auxiliary device with automatic recovery function for shooting training | |
| CN209173317U (en) | A kind of table tennis picks up ball machine automatically | |
| CN112891873A (en) | Tennis ball serving and picking integrated machine | |
| CN107569830A (en) | A kind of automatic table tennis ball picking car | |
| CN113041580B (en) | Negative pressure formula table tennis automatic pickup dolly | |
| CN108905110B (en) | Tennis ball recycling and projecting device | |
| CN208710964U (en) | A kind of badminton practice auxiliary device | |
| CN215538285U (en) | Badminton pickup device | |
| CN210472990U (en) | Automatic tennis ball picking device | |
| CN209934028U (en) | Tennis serving and ball picking machine | |
| CN108905111B (en) | Tennis ball launching and recovering device for tennis training field | |
| CN219440627U (en) | Badminton conveying device of badminton pitching machine | |
| CN208212426U (en) | Automatically picking up balls machine | |
| CN213609689U (en) | Sorting device is collected in badminton intelligent recognition | |
| CN210205788U (en) | Basketball training ball picking device | |
| CN101920093A (en) | Table tennis ball picker and working method thereof | |
| CN215275689U (en) | Tennis ball launching and recovering device for tennis training field | |
| CN112774146A (en) | Full-automatic badminton penetrating machine | |
| CN212467059U (en) | Pick up integrative robot of serving tennis | |
| CN109159106B (en) | Robot for picking spherical fruits by two-stage rolling brush based on Mecanum wheel | |
| CN208229323U (en) | A kind of drum-type tennis pickup machine | |
| CN210302269U (en) | Table tennis ball picking robot | |
| CN208229325U (en) | A kind of conveyor type tennis intelligence pickup robot | |
| CN201337799Y (en) | Tennis ball picker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |