CN109126063A - A kind of high-efficient tennis ball picking up device - Google Patents
A kind of high-efficient tennis ball picking up device Download PDFInfo
- Publication number
- CN109126063A CN109126063A CN201811204496.9A CN201811204496A CN109126063A CN 109126063 A CN109126063 A CN 109126063A CN 201811204496 A CN201811204496 A CN 201811204496A CN 109126063 A CN109126063 A CN 109126063A
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- Prior art keywords
- drum
- hole
- tennis
- fixedly mounted
- partition
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- 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.)
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- 238000005192 partition Methods 0.000 claims abstract description 26
- 238000009434 installation Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims 1
- 239000004575 stone Substances 0.000 abstract description 9
- 238000012216 screening Methods 0.000 abstract description 5
- 239000002245 particle Substances 0.000 description 6
- 230000005484 gravity Effects 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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
-
- 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
- A63B47/04—Devices for handling or treating balls, e.g. for holding or carrying balls for cleaning balls
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Combined Means For Separation Of Solids (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
A kind of high-efficient tennis ball picking up device, including drum, the left side of drum is open, the both ends difference bearing of drum periphery installs annular slab, the inside of annular slab is fixedly connected by several first partitions, plane where first partition passes through the axis of drum, it is fixedly connected respectively by two symmetrical second partitions between adjacent first partition, adjacent first partition and the second partition between it can separately constitute pyramid shape funnel structure, centre at the top of drum opens up first through hole, vertical tube is fixedly mounted in first through hole, the periphery of vertical tube uniformly opens up several bar shaped through grooves.The configuration of the present invention is simple, compact, it can flexibly move, convenient for user using operating, screening can be carried out to the tennis found, the stone automatic rejection in tennis ball picking up device will be taken in, and the rubble on tennis surface can be cleared up, enable tennis directly secondary use, can satisfy the market demand, is suitble to promote.
Description
Technical field
The invention belongs to tennis ball picking up device field, specifically a kind of high-efficient tennis ball picking up device.
Background technique
Generally there is tennis transmitter in tennis training place, emits the tennis training fortune that ball emits different tracks by tennis
Mobilize, tennis transmitter can continuity emit a large amount of tennis, tennis needs special throughout each corner in tennis training place
Staff collect the tennis being scattered, staff constantly bends over to pick up ball, easily cause staff discomfort, increase work
The labor intensity of personnel keeps ball picking-up efficiency extremely low, and the existing general volume of tennis ball picking up device is larger, and movement is inflexible, no
Convenient for the operation of staff, and the stone that tennis is not much different with tennis volume can not be differentiated, stone is made to be collected into tennis
In ball picking up device, the tennis surface collected influences the directly secondary use of tennis, existing tennis is picked up with a large amount of gravel particle
Ball device is unable to satisfy actual demand, therefore we have invented a kind of high-efficient tennis ball picking up device.
Summary of the invention
The present invention provides a kind of high-efficient tennis ball picking up device, to solve defect in the prior art.
The present invention is achieved by the following technical programs:
A kind of high-efficient tennis ball picking up device, including drum, the left side opening of drum, the both ends difference bearing peace of drum periphery
Annular slab is filled, the inside of annular slab is fixedly connected by several first partitions, and plane where first partition passes through the axis of drum
Line is fixedly connected between adjacent first partition respectively by two symmetrical second partitions, adjacent first partition and its
Between second partition can separately constitute pyramid shape funnel structure, the centre at the top of drum opens up first through hole, and first is logical
Vertical tube is fixedly mounted in hole, the periphery of vertical tube uniformly opens up several bar shaped through grooves, and the centre of bar shaped through groove bottom side opens up the respectively
Two through-holes, the interior bearing respectively of the second through-hole install vertical pivot, and the upper end of vertical pivot connects with the top side bearing of corresponding bar shaped through groove respectively
It connects, brush roll is fixedly mounted in the periphery of vertical pivot respectively, and brush roll is located in corresponding bar shaped through groove, the lower end difference of vertical pivot
Pinion gear is fixedly mounted across corresponding second through-hole, the lower bearing of vertical tube periphery installs casing, casing and vertical tube center line
Collinearly, small ring gear is fixedly mounted in the lower part of internal surface of sleeve pipe, and pinion gear engages cooperation, casing periphery with small ring gear respectively
Top be fixedly mounted the first helical gear；Top on the right side of drum opens up third through-hole, and third through-hole inner bearing installs horizontal axis, horizontal
The second helical gear is fixedly mounted in the left end of axis, and the second helical gear engages cooperation, the right side of the annular slab on right side with the first helical gear
Big ring gear, big ring gear and drum centerline collineation is fixedly mounted, gear wheel, gear wheel is fixedly mounted in the right end of horizontal axis
Engage cooperation with big ring gear, the middle part of drum periphery is fixedly mounted opening annulus, the both ends for the annulus that is open respectively with vertical tube
The front side or rear side on top is fixedly connected, and the bottom of drum and opening annulus opens up fourth hole respectively, in two fourth holes
Heart line is conllinear, and filter screen is fixedly mounted in the fourth hole of upside, and the edge on the inside of two annular slabs passes through several lateral bullets
Property rope be fixedly connected, the spacing between two neighboring elastic string is equal to the radius of tennis, and handle is fixedly mounted in intermediate on the right side of drum
Hand, the opening on the left of drum connect bung by torsional spring hinge.
A kind of high-efficient tennis ball picking up device as described above, the top side of the filter screen is arcwall face, and is filtered
The top of net is located inside drum.
High-efficient tennis ball picking up device as described above a kind of, the lower part on the outside of the annular slab open up the 5th respectively
Through-hole.
A kind of high-efficient tennis ball picking up device as described above, rubber is fixedly mounted in the periphery of the annular slab respectively
Tire.
A kind of high-efficient tennis ball picking up device as described above, the bottom of the drum are fixedly mounted guide pad, lead
To the top side left low and right high of block.
High-efficient tennis ball picking up device as described above a kind of, the both ends of the elastic string by hook with it is corresponding
Along being fixedly connected, the both ends of elastic string are cooperatively connected with corresponding hook activity the inner side edge of annular slab respectively, elastic string installation
Tensional state is in after linking up with above.
The invention has the advantages that the configuration of the present invention is simple, compact can be moved flexibly, behaviour is used convenient for user
Make, screening can be carried out to the tennis found, the stone automatic rejection in tennis ball picking up device will be taken in, and can be to tennis table
The rubble in face is cleared up, and is enable tennis directly secondary use, be can satisfy the market demand, is suitble to promote.Use the present invention
When, user holds the present apparatus by handle one hand, enables annular slab in tennis court rolls on the floor, when tennis is located at two rings
When ground between shape plate, tennis can strut the spacing between adjacent elastic strands and enter pyramid shape directed downwardly open at this time
In funnel structure, annular slab is rolled backward with continuation, the pyramid shape funnel structure equipped with tennis turns upwards along the periphery of drum
Dynamic, the periphery for the annulus that is open and the inside opening sliding contact of pyramid shape funnel structure cooperate, and opening annulus can stop net
Ball enters the outside of drum from the inside opening of pyramid shape funnel structure, and tennis can not pass through adjacent bullet by the gravity of itself
Property rope between spacing drop out, the stone being not much different with tennis volume can be using itself gravity between adjacent elastic strands
Spacing drop out, and then complete tennis and stone screening；When the pyramid shape funnel structure equipped with tennis is located at the upper of drum
When portion, the opening on the inside of pyramid shape funnel structure is opposite with the upper port of vertical tube, and opening annulus no longer stops tennis from tetragonous
The inside opening of conical hopper structure comes out, and the tennis in pyramid shape funnel structure can be fallen into vertical tube, the annular on right side
Plate drives big ring gear to rotate when rolling, gear wheel drives horizontal axis, the rotation of the second helical gear, and then the first helical gear drives set
Pipe, small ring gear rotation, pinion gear drive vertical pivot, brush roll rotation, when tennis out of vertical tube to fall when, brush roll can
The surface of tennis is cleared up, separates gravel particle with tennis, gravel particle and tennis enter from the lower end of vertical tube respectively
In drum, gravel particle is entered in outer openings pyramid shape funnel structure directed downwardly at this time by filter screen, fourth hole, and
It is dropped out by the spacing between corresponding elastic string.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is structural schematic diagram of the invention；Fig. 2 is I partial enlarged view of Fig. 1；Fig. 3 is use state of the invention
Figure.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
A kind of high-efficient tennis ball picking up device, as shown, including drum 1, the left side of drum 1 is open, 1 periphery of drum
Both ends difference bearing annular slab 2 is installed, the inside of annular slab 2 is fixedly connected by several first partitions 3,3 institute of first partition
Pass through the axis of drum 1 in plane, is consolidated respectively by two symmetrical second partitions 4 between adjacent first partition 3
Fixed connection, adjacent first partition 3 and the second partition 4 between it can separately constitute pyramid shape funnel structure, 1 top of drum
Centre open up first through hole 5, vertical tube 6 is fixedly mounted in first through hole 5, the periphery of vertical tube 6 uniformly opens up several bar shaped through grooves
7, the centre of 7 bottom side of bar shaped through groove opens up the second through-hole 8 respectively, and bearing installs vertical pivot 9 respectively in the second through-hole 8, vertical pivot 9 it is upper
End is connected with the top side bearing of corresponding bar shaped through groove 7 respectively, and brush roll 10, brush roll is fixedly mounted in the periphery of vertical pivot 9 respectively
10 are located in corresponding bar shaped through groove 7, and the lower end of vertical pivot 9 is each passed through corresponding second through-hole 8 and pinion gear is fixedly mounted
11, the lower bearing of 6 periphery of vertical tube installs casing 12, casing 12 and 6 centerline collineation of vertical tube, and the lower part of 12 inner wall of casing is fixed
Small ring gear 13 is installed, pinion gear 11 engages cooperation with small ring gear 13 respectively, and the top of 12 periphery of casing is fixedly mounted
First helical gear 14；The top on 1 right side of drum opens up third through-hole 15, and 15 inner bearing of third through-hole installs horizontal axis 16, horizontal axis 16
Left end the second helical gear 17 is fixedly mounted, the second helical gear 17 engages cooperation with the first helical gear 14, the annular slab 2 on right side
Big ring gear 18, big ring gear 18 and 1 centerline collineation of drum is fixedly mounted in right side, and the right end of horizontal axis 16 is fixedly mounted big
Gear 19, gear wheel 19 engage cooperation with big ring gear 18, and opening annulus 20, opening is fixedly mounted in the middle part of 1 periphery of drum
The both ends of annulus 20 are fixedly connected with the front side or rear side on 6 top of vertical tube respectively, and drum 1 and the bottom of opening annulus 20 are opened respectively
If fourth hole 21, two 21 centerline collineations of fourth hole, the interior fixed installation filter screen 22 of the fourth hole 21 of upside, two
The edge of 22 inside of annular slab is fixedly connected by several lateral elastic strings 23, the spacing etc. between two neighboring elastic string 23
In the radius of tennis, handle 24 is fixedly mounted in the intermediate of 1 right side of drum, and the opening in 1 left side of drum is connected by torsional spring hinge
Bung 25.The configuration of the present invention is simple, compact can be moved flexibly, can be to the net found convenient for user using operation
Ball carries out screening, will take in the stone automatic rejection in tennis ball picking up device, and can clear up the rubble on tennis surface,
Enable tennis directly secondary use, can satisfy the market demand, is suitble to promote.When using the present invention, user passes through handle
The 24 singlehanded holding present apparatus enable annular slab 2 in tennis court rolls on the floor, when tennis is located at the ground between two annular slabs 2
When face, tennis can strut the spacing between adjacent elastic strands 23 and enter pyramid shape funnel structure directed downwardly open at this time
It is interior, it is rotated up, is open along the periphery of drum 1 with rolling annular slab 2, the pyramid shape funnel structure equipped with tennis backward is continued
The inside opening sliding contact of the periphery of annulus 20 and pyramid shape funnel structure cooperates, opening annulus 20 can stop tennis from
The inside opening of pyramid shape funnel structure enters the outside of drum 1, and tennis can not be by adjacent spring by the gravity of itself
Rope 23 between spacing drop out, the stone being not much different with tennis volume can using itself gravity from adjacent elastic strands 23 it
Between spacing drop out, and then complete tennis and stone screening；When the pyramid shape funnel structure equipped with tennis is located at drum 1
When top, the opening on the inside of pyramid shape funnel structure is opposite with the upper port of vertical tube 6, opening annulus 20 no longer stop tennis from
The inside opening of pyramid shape funnel structure comes out, and the tennis in pyramid shape funnel structure can be fallen into vertical tube 6, right side
Annular slab 2 drives big ring gear 18 to rotate when rolling, gear wheel 19 drives horizontal axis 16, the rotation of the second helical gear 17, Jin Er
One helical gear 14 drive casing 12, small ring gear 13 rotate, pinion gear 11 drive vertical pivot 9, brush roll 10 rotate, when tennis from
To when falling in vertical tube 6, brush roll 10 can clear up the surface of tennis, separate gravel particle with tennis, rubble
Grain enters in drum 1 from the lower end of vertical tube 6 respectively with tennis, and gravel particle is entered at this time by filter screen 22, fourth hole 21
In outer openings pyramid shape funnel structure directed downwardly, and dropped out by the spacing between corresponding elastic string 23.
Specifically, as shown, the top side of filter screen 22 described in the present embodiment is arcwall face, and filter screen 22 is upper
Portion is located inside drum 1.It is located at the top of filter screen 22 after avoiding tennis from entering drum 1, influences sandstone and dropped out from filter screen 22
Drum 1.
Specifically, as shown, the lower part in 2 outside of annular slab described in the present embodiment opens up fifth hole 26 respectively.Into
The sandstone entered in the enclosure space that annular slab 2 and drum 1, first partition 3, second partition 4 form can be by fifth hole 26
Discharge.
Further, as shown, rubber tyre 27 is fixedly mounted in the periphery of annular slab 2 described in the present embodiment respectively.Rubber
Glue tire 27 can either increase the frictional force between 2 periphery of annular slab and ground, and annular slab 2 is enable smoothly to roll on the ground
It is dynamic, and there is cushioning effect, enable annular slab 2 in uneven ground surface, increases the applicability of the present apparatus.
Further, as shown, guide pad 28, guide pad is fixedly mounted in the bottom of drum 1 described in the present embodiment
28 top side left low and right high.When opening bung 25, the tennis inside drum 1 can roll to the left along guide pad 28, be convenient for drum 1
The taking-up of internal tennis.
Further, as shown, the both ends of elastic string 23 described in the present embodiment pass through hook 29 and corresponding ring
The inner side edge of shape plate 2 is along being fixedly connected, and the both ends of elastic string 23 are cooperatively connected with corresponding 29 activity of hook respectively, elastic string 23
In tensional state after being installed on hook 29.23 installation and removal of elastic string are convenient, convenient for the replacement of elastic string 23.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (6)
1. a kind of high-efficient tennis ball picking up device, it is characterised in that: including drum (1), the left side of drum (1) is open, drum
(1) inside of both ends difference bearing installation annular slab (2) of periphery, annular slab (2) connects by the way that several first partitions (3) are fixed
It connects, plane where first partition (3) passes through the axis of drum (1), passes through two left sides respectively between adjacent first partition (3)
Right symmetrical second partition (4) is fixedly connected, and adjacent first partition (3) and the second partition (4) between it can separately constitute
Pyramid shape funnel structure, the centre at the top of drum (1) open up first through hole (5), and vertical tube is fixedly mounted in first through hole (5)
(6), the periphery of vertical tube (6) uniformly opens up several bar shaped through grooves (7), and it is logical that the centre of bar shaped through groove (7) bottom side opens up second respectively
Hole (8), bearing installation vertical pivot (9) respectively in the second through-hole (8), the upper end of vertical pivot (9) respectively with corresponding bar shaped through groove (7)
The connection of top side bearing, the periphery of vertical pivot (9) are fixedly mounted brush roll (10) respectively, and brush roll (10) is located at corresponding bar shaped
In through groove (7), the lower end of vertical pivot (9) is each passed through corresponding second through-hole (8) and pinion gear (11) is fixedly mounted, and vertical tube (6) is outside
The lower bearing in week installs casing (12), casing (12) and vertical tube (6) centerline collineation, the fixed peace in the lower part of casing (12) inner wall
It fills small ring gear (13), pinion gear (11) engages cooperation with small ring gear (13) respectively, and the top of casing (12) periphery is solid
Dingan County fills the first helical gear (14)；Top on the right side of drum (1) opens up third through-hole (15), the installation of third through-hole (15) inner bearing
The second helical gear (17) are fixedly mounted in the left end of horizontal axis (16), horizontal axis (16), the second helical gear (17) and the first helical gear (14)
Engagement cooperates, the big ring gear (18) of right side fixed installation of the annular slab (2) on right side, big ring gear (18) and drum (1)
Gear wheel (19) are fixedly mounted in the right end of centerline collineation, horizontal axis (16), and gear wheel (19) is engaged with big ring gear (18) matches
Close, opening annulus (20) is fixedly mounted in the middle part of drum (1) periphery, be open annulus (20) both ends respectively with vertical tube (6) top
Front side or rear side be fixedly connected, drum (1) and opening annulus (20) bottom open up respectively fourth hole (21), two the 4th
Through-hole (21) centerline collineation, the fourth hole (21) of upside is interior to be fixedly mounted filter screen (22), on the inside of two annular slabs (22)
Edge be fixedly connected by several lateral elastic strings (23), the spacing between two neighboring elastic string (23) is equal to tennis
Handle (24) are fixedly mounted in radius, intermediate on the right side of drum (1), and the opening on the left of drum (1) connects bucket by torsional spring hinge
It covers (25).
2. the high-efficient tennis ball picking up device of one kind according to claim 1, it is characterised in that: the filter screen (22)
Top side be arcwall face, and the top of filter screen (22) is located inside drum (1).
3. the high-efficient tennis ball picking up device of one kind according to claim 1, it is characterised in that: the annular slab (2)
The lower part in outside opens up fifth hole (26) respectively.
4. the high-efficient tennis ball picking up device of one kind according to claim 1, it is characterised in that: the annular slab (2)
Periphery rubber tyre (27) are fixedly mounted respectively.
5. the high-efficient tennis ball picking up device of one kind according to claim 1, it is characterised in that: the drum (1)
Guide pad (28) are fixedly mounted in bottom, the top side left low and right high of guide pad (28).
6. the high-efficient tennis ball picking up device of one kind according to claim 1, it is characterised in that: the elastic string (23)
Both ends be fixedly connected by the inner side edge edge of hook (29) and corresponding annular slab (2), the both ends of elastic string (23) respectively with
Corresponding hook (29) activity is cooperatively connected, and elastic string (23) is in tensional state after being installed on hook (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811204496.9A CN109126063B (en) | 2018-10-16 | 2018-10-16 | Efficient tennis ball picking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811204496.9A CN109126063B (en) | 2018-10-16 | 2018-10-16 | Efficient tennis ball picking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109126063A true CN109126063A (en) | 2019-01-04 |
| CN109126063B CN109126063B (en) | 2020-12-08 |
Family
ID=64812117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811204496.9A Active CN109126063B (en) | 2018-10-16 | 2018-10-16 | Efficient tennis ball picking device |
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| Country | Link |
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| CN (1) | CN109126063B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021046903A1 (en) * | 2019-09-12 | 2021-03-18 | 苏州依卡蒂运动器材有限公司 | Ball collection cart for volleyball training |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6481768B1 (en) * | 2001-09-07 | 2002-11-19 | Chi-Fong Fu | Ball-picking device |
| JP2008000561A (en) * | 2006-06-20 | 2008-01-10 | Kichiji Kashiwa | Ball collecting gear |
| CN204293784U (en) * | 2014-10-27 | 2015-04-29 | 闻晓光 | A kind of ball pick-up device |
| CN105363180A (en) * | 2015-12-03 | 2016-03-02 | 湘潭大学 | Automatic lightweight ball picking device |
| CN106377883A (en) * | 2016-11-19 | 2017-02-08 | 郑州经度知识产权代理服务有限公司 | Outdoor tennis ball-collecting machine |
| CN108261738A (en) * | 2018-01-19 | 2018-07-10 | 南昌首叶科技有限公司 | A kind of foot-operated cleaning basketball device |
-
2018
- 2018-10-16 CN CN201811204496.9A patent/CN109126063B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6481768B1 (en) * | 2001-09-07 | 2002-11-19 | Chi-Fong Fu | Ball-picking device |
| JP2008000561A (en) * | 2006-06-20 | 2008-01-10 | Kichiji Kashiwa | Ball collecting gear |
| CN204293784U (en) * | 2014-10-27 | 2015-04-29 | 闻晓光 | A kind of ball pick-up device |
| CN105363180A (en) * | 2015-12-03 | 2016-03-02 | 湘潭大学 | Automatic lightweight ball picking device |
| CN106377883A (en) * | 2016-11-19 | 2017-02-08 | 郑州经度知识产权代理服务有限公司 | Outdoor tennis ball-collecting machine |
| CN108261738A (en) * | 2018-01-19 | 2018-07-10 | 南昌首叶科技有限公司 | A kind of foot-operated cleaning basketball device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021046903A1 (en) * | 2019-09-12 | 2021-03-18 | 苏州依卡蒂运动器材有限公司 | Ball collection cart for volleyball training |
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| Publication number | Publication date |
|---|---|
| CN109126063B (en) | 2020-12-08 |
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