CN114392539B - Volleyball serving device for physical training - Google Patents
Volleyball serving device for physical training Download PDFInfo
- Publication number
- CN114392539B CN114392539B CN202210057093.6A CN202210057093A CN114392539B CN 114392539 B CN114392539 B CN 114392539B CN 202210057093 A CN202210057093 A CN 202210057093A CN 114392539 B CN114392539 B CN 114392539B
- Authority
- CN
- China
- Prior art keywords
- shell
- volleyballs
- arc
- air
- volleyball
- 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.)
- Active
Links
Images
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
- A63B69/409—Stationarily-arranged devices for projecting balls or other bodies with pneumatic ball- or body-propelling means
-
- 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
- A63B69/0095—Training appliances or apparatus for special sports for volley-ball
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention relates to the field of sports training, and discloses a volleyball serving device for sports training, aiming at solving the problem that the existing volleyball serving device for sports training is low in authenticity in use, wherein the volleyball serving device comprises a first shell, a feeding part and a funnel-shaped separating part, wherein the side surface of the first shell is provided with the feeding part; a stock stop mechanism; an arcuate acceleration housing. When the air blowing device is used, the stock stop mechanism controls the volleyballs in the separation part to be fed into the extension pipe and conveyed to the bottom end of the arc-shaped acceleration shell through the extension pipe, the volleyballs are pushed by the material pushing mechanism to move in the arc-shaped acceleration shell, so that the volleyballs are accelerated and discharged from the discharge hole of the arc-shaped acceleration shell to achieve service, when the volleyballs are discharged from the discharge hole of the arc-shaped acceleration shell, air can be blown into cavities at different positions through the air pump, air flow is blown to the volleyballs from air outlet pipes at different positions, different wind directions are simulated, and the authenticity and difficulty of training are improved.
Description
Technical Field
The invention relates to the technical field of physical training, in particular to a volleyball serving device for physical training.
Background
The volleyball is one of ball sports items, and the sportsman is played from the online sky with the hand (hold) ball, and the ball that volleyball motion used is done the shell with sheepskin or synthetic leather, and the courage is done to rubber, and size and football are similar, and the sportsman need use service device simulation match training when carrying out the volleyball training, but current volleyball service device does not possess the effect of wind-blowing in the simulation air when using, leads to the authenticity of training lower.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a volleyball serving device for sports training.
In order to achieve the purpose, the invention adopts the following technical scheme:
a volleyball serving device for sports training comprises a first shell, wherein a feeding component is arranged on the side surface of the first shell and used for feeding and collecting volleyballs into the first shell, and a funnel-shaped separating component is used for separating the volleyballs collected in the first shell;
the stock stop is used for controlling the blanking of the volleyballs in the separation part;
the arc accelerating shell is used for guiding volleyball serving;
the extension pipe is used for conveying the volleyballs fed in the separation part into the arc-shaped acceleration shell;
the pushing mechanism is used for pushing volleyballs in the arc-shaped acceleration shell to serve the balls;
the wind direction simulation mechanism is used for blowing the volleyballs emitted by the discharge port of the arc-shaped acceleration shell and comprises a second shell arranged at the discharge port of the arc-shaped acceleration shell, cavities are formed in the periphery of the second shell, and an air outlet pipe is movably arranged on the inner wall of each cavity;
the air pump is used for blowing air into the cavity.
Preferably, the device also comprises an adjusting mechanism for adjusting the air outlet direction of the air outlet pipe;
the adjusting mechanism comprises a movable ball movably arranged on the inner wall of the second shell, and an air outlet pipe penetrates through the center of the movable ball and extends to the outside of the cavity;
the outer wall of one end of the air outlet pipe extending into the cavity is provided with a mounting seat, and one side of the mounting seat close to the movable ball is provided with an adjusting air bag;
the interior of the adjusting air bag is connected with the air outlet end of the air pump through an air pipe.
Preferably, the volleyball protection device further comprises a protection mechanism for protecting the volleyball moved into the second shell;
the protection mechanism comprises a protection shell arranged on the inner wall of the second shell, a through hole is formed in the side face of the protection shell, and the opening position of the through hole corresponds to the opening position of the air outlet pipe.
Preferably, a clamping groove is formed in one side, far away from the second shell, of the protection shell, and a rolling piece is clamped inside the clamping groove.
Preferably, the material blocking mechanism comprises a baffle plate installed on the outer wall of the separating component through a second telescopic piece, and one end of the baffle plate extends to the bottom opening of the separating component.
Preferably, the pushing mechanism comprises a second rotating shaft movably arranged on the outer wall of the first shell, a rotating member is arranged on one side of the second rotating shaft, and a pushing part is arranged at one end, far away from the second rotating shaft, of the rotating member through a first telescopic member;
one side of the pushing component is provided with a limiting plate for limiting the pushed volleyball;
the second driving part is used for driving the second rotating shaft to rotate.
Preferably, a through hole is formed in one side, close to the second rotating shaft, of the arc-shaped acceleration shell, and one end of the pushing component extends to the inside of the arc-shaped acceleration shell through the through hole.
Preferably, the through hole is close to one side inner wall of second casing and passes through the back buffer part of elastic component installation for cushion the pushing component.
Preferably, the device also comprises an agitating mechanism for agitating volleyball stored in the first shell;
the stirring mechanism comprises a first rotating shaft movably arranged in the first shell, and a stirring component which is arranged in a hollow way is arranged on the side surface of the first rotating shaft;
the first driving component is used for driving the first rotating shaft to rotate.
Preferably, the dust collector also comprises a dust collection mechanism for collecting dust of volleyballs stored in the first shell;
the dust suction mechanism comprises an air suction hole formed in the outer wall of the stirring part and an air suction part used for sucking air in the stirring part.
The beneficial effects of the invention are as follows:
when the volleyball training device is used, the stop mechanism controls the material discharging of the volleyballs in the separation part to be in the extension pipe, the material discharging device is conveyed to the bottom end of the arc acceleration shell through the extension pipe, the volleyballs are pushed by the material pushing mechanism to move in the arc acceleration shell, the volleyballs are accelerated and discharged from the discharge port of the arc acceleration shell to achieve ball serving, when the volleyballs are sent from the discharge port of the arc acceleration shell, air can be blown into cavities at different positions through the air pump, air flow is blown to the volleyballs from air outlet pipes at different positions, different wind directions are simulated, and the training authenticity and difficulty are improved.
Drawings
Fig. 1 is a schematic structural view of a volleyball serving device for sports training according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a pushing mechanism and an arc-shaped accelerating shell of a volleyball serving device for physical training according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a wind direction simulation mechanism and a protection mechanism of a volleyball serving device for physical training according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an adjusting mechanism of a volleyball serving device for physical training according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of a partition member and a material stop mechanism of the volleyball serving device for physical training according to the embodiment of the invention;
fig. 6 is a schematic structural view of a material blocking mechanism of a volleyball serving device for physical training according to an embodiment of the invention.
In the figure: 1-a first shell, 2-an arc accelerating shell, 3-a wind direction simulating mechanism, 31-an air pump, 32-a second shell, 4-a stirring mechanism, 41-a first driving part, 42-a first rotating shaft, 43-a stirring part, 5-a feeding part, 6-a separating part, 7-a dust collecting mechanism, 71-an air pumping part, 72-an air pumping hole, 8-an extending pipe, 9-a material pushing mechanism, 91-a second rotating shaft, 92-a rotating part, 93-a first telescopic part, 94-a limiting plate, 95-a pushing part, 11-a material stopping mechanism, 111-a second telescopic part, 112-a baffle, 12-an air outlet pipe, 13-a protecting mechanism, 131-a protecting shell, 132-a perforation, 133-a rolling part, 14-adjusting mechanism, 141-mounting seat, 142-adjusting air bag and 143-movable ball.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1 to 6, a volleyball serving device for physical training comprises a first housing 1, wherein a feeding part 5 is arranged on the side surface of the first housing 1 and used for collecting volleyball feeding materials into the first housing 1, and a funnel-shaped separating part 6 is further included and used for separating volleyballs collected in the first housing 1;
the stock stop 11 is used for controlling the blanking of volleyballs in the separation part 6;
the arc accelerating shell 2 is used for guiding volleyball serving;
the extension pipe 8 is used for conveying the volleyballs fed in the separation part 6 into the arc-shaped acceleration shell 2;
the pushing mechanism 9 is used for pushing volleyballs in the arc-shaped acceleration shell 2 to serve the volleyballs;
the wind direction simulation mechanism 3 is used for blowing the volleyballs emitted from the discharge hole of the arc-shaped acceleration shell 2, the wind direction simulation mechanism 3 comprises a second shell 32 arranged at the discharge hole of the arc-shaped acceleration shell 2, the periphery of the second shell 32 is provided with a cavity, and the inner wall of the cavity is movably provided with an air outlet pipe 12;
still include air pump 31, be used for the air of drum into in the cavity, stock stop 11 control partition unit 6 in volleyball unloading during the use to extension pipe 8 in, and carry the bottom of casing 2 with higher speed to the arc through extension pipe 8, promote the volleyball through pushing equipment 9 and remove in casing 2 with higher speed at the arc, make the volleyball with higher speed and discharge the realization service from casing 2's discharge gate is accelerated to the arc, when the volleyball sends from casing 2 discharge gate is accelerated to the arc, the air is blown into to the cavity of different positions in accessible air pump 31, the air current blows to the volleyball from the outlet duct 12 of different positions, simulate different wind directions, improve the authenticity and the degree of difficulty of training.
As a preferred embodiment of the present invention, the present invention further comprises an adjusting mechanism 14 for adjusting the outlet direction of the outlet pipe 12;
the adjusting mechanism 14 comprises a movable ball 143 movably arranged on the inner wall of the second shell 32, and the air outlet pipe 12 penetrates through the center of the movable ball 143 and extends to the outside of the cavity;
an installation seat 141 is arranged on the outer wall of one end of the air outlet pipe 12 extending into the cavity, and an adjusting air bag 142 is arranged on one side of the installation seat 141 close to the movable ball 143;
the inside of adjusting gasbag 142 is connected through the end of giving vent to anger of trachea and air pump 31, and accessible air pump 31 is inflated in the adjusting gasbag 142 to the different positions in mount pad 141 side during the use, adjusts gasbag 142 and aerifys and expand and contact with the inner wall of cavity to the mount pad 141 takes place the slope in the top, makes activity ball 143 and outlet duct 12 rotate along with it, realizes the regulation to outlet duct 12 inclination, changes the direction of blowing, and it is more nimble convenient to use.
As a preferred embodiment of the present invention, a protection mechanism 13 for protecting the volleyball moved into the second casing 32;
the protection mechanism 13 includes a protection housing 131 mounted on the inner wall of the second housing 32, a through hole 132 is formed in the side surface of the protection housing 131, and the opening position of the through hole 132 corresponds to the opening position of the outlet pipe 12.
As a preferred embodiment of the present invention, a clamping groove is formed on one side of the protection housing 131 away from the second housing 32, a rolling member 133 is clamped inside the clamping groove, when the volleyball moves into the second housing 32, the protection housing 131 performs protection and limit on the volleyball, so as to prevent the volleyball from impacting one end of the air outlet pipe 12 to affect service of the volleyball, and when the volleyball contacts the inner wall of the protection housing 131, the rolling member 133 reduces friction between the volleyball and the inner wall of the protection housing 131.
As a preferred embodiment of the present invention, the striker 11 includes a baffle plate 112 mounted on the outer wall of the partition member 6 through a second telescopic member 111, and one end of the baffle plate 112 extends to the bottom opening of the partition member 6.
As a preferred embodiment of the present invention, the pushing mechanism 9 includes a second rotating shaft 91 movably disposed on the outer wall of the first casing 1, a rotating member 92 is disposed on one side of the second rotating shaft 91, and a pushing member 95 is mounted on one end of the rotating member 92 away from the second rotating shaft 91 through a first telescopic member 93;
a limiting plate 94 is arranged on one side of the pushing component 95 and used for limiting the pushed volleyballs;
and the second driving part is used for driving the second rotating shaft 91 to rotate.
As a preferred embodiment of the present invention, a through hole is formed at a side of the arc acceleration housing 2 close to the second rotating shaft 91, and one end of the pushing member 95 extends to the inside of the arc acceleration housing 2 through the through hole.
As a preferred embodiment of the present invention, a rear buffer member is mounted on an inner wall of one side of the through hole close to the second casing 32 through an elastic member, and is used for buffering the pushing member 95, when the volleyballs are conveyed to the bottom inside the arc-shaped acceleration casing 2 through the extension pipe 8 during use, the first telescopic member 93 pushes the pushing member 95 to be inserted into the arc-shaped acceleration casing 2, the second driving member drives the second rotating shaft 91 to rotate, so as to drive the rotating member 92 and the pushing member 95 to rotate therewith, and push the volleyballs in the arc-shaped acceleration casing 2 through the pushing member 95, so as to achieve service, and when the pushing member 95 pushes the volleyball to move in the arc-shaped acceleration casing 2, the limiting plate 94 shields an opening of the through hole, so as to prevent the volleyball from falling from the arc-shaped acceleration casing 2 from the through hole.
As a preferred embodiment of the present invention, further comprises an agitation mechanism 4 for agitating volleyballs stored in the first casing 1;
the stirring mechanism 4 comprises a first rotating shaft 42 movably arranged in the first shell 1, and a hollow stirring component 43 is arranged on the side surface of the first rotating shaft 42;
the first driving member 41 is used for driving the first rotating shaft 42 to rotate, and the first rotating shaft 42 and the stirring member 43 can be driven by the first driving member 41 to rotate so as to stir the volleyballs stored in the first casing 1.
As a preferred embodiment of the present invention, the present invention further comprises a dust suction mechanism 7 for sucking dust from volleyballs stored in the first housing 1;
the dust suction mechanism 7 includes a suction hole 72 opened in an outer wall of the stirring part 43, and a suction part 71 for sucking air into the stirring part 43.
When the device is used, the material stopping mechanism 11 controls the volleyballs in the partition part 6 to be discharged into the extension pipe 8 and conveyed to the bottom end of the arc-shaped acceleration shell 2 through the extension pipe 8, the volleyballs are pushed to move in the arc-shaped acceleration shell 2 through the material pushing mechanism 9, so that the volleyballs are accelerated and discharged from the discharge hole of the arc-shaped acceleration shell 2 to achieve service, when the volleyballs are sent out from the discharge hole of the arc-shaped acceleration shell 2, air can be blown into cavities at different positions through the air pump 31, air flow is blown to the volleyballs from the air outlet pipes 12 at different positions, different wind directions are simulated, and the authenticity and difficulty of training are improved; when the air pump is used, the air pump 31 can be used for inflating the adjusting air bag 142 at different positions on the side surface of the mounting seat 141, and the adjusting air bag 142 inflates and expands and is in contact with the inner wall of the cavity, so that the mounting seat 141 is pushed to incline, the movable ball 143 and the air outlet pipe 12 rotate along with the movable ball, the inclination angle of the air outlet pipe 12 is adjusted, the air blowing direction is changed, and the air pump is more flexible and convenient to use; when the volleyballs move into the second shell 32, the protective shell 131 performs protective limiting on the volleyballs, the volleyballs are prevented from impacting one end of the air outlet pipe 12 to influence the service of the volleyballs, and when the volleyballs contact the inner wall of the protective shell 131, the rolling members 133 reduce the friction force between the volleyballs and the inner wall of the protective shell 131; during the use when the volleyball is carried to the arc when casing 2 inside bottom with higher speed through extension 8, first extensible member 93 promotes pushing parts 95 and inserts the arc inside of casing 2 with higher speed, second drive part drive second pivot 91 rotates, thereby it rotates with the pushing parts 95 to drive rotation piece 92, and promote the volleyball in casing 2 with higher speed through pushing parts 95 to the arc and promote, realize serve, and pushing parts 95 promotes the volleyball when casing 2 with higher speed removes in the arc, limiting plate 94 shelters from the opening of through-hole, avoid the volleyball to drop from casing 2 with higher speed of arc department from the through-hole.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. A volleyball serving device for sports training comprises a first shell, wherein a feeding part is arranged on the side surface of the first shell and used for feeding and collecting volleyballs into the first shell;
the stock stop is used for controlling the blanking of the volleyballs in the separation part;
the arc accelerating shell is used for guiding volleyball serving;
the extension pipe is used for conveying the volleyballs fed in the separation part into the arc-shaped acceleration shell;
the pushing mechanism is used for pushing volleyballs in the arc-shaped acceleration shell to serve the balls;
the wind direction simulation mechanism is used for blowing the volleyballs emitted from the discharge port of the arc-shaped acceleration shell, and comprises a second shell arranged at the discharge port of the arc-shaped acceleration shell, the periphery of the second shell is provided with a cavity, and the inner wall of the cavity is movably provided with an air outlet pipe;
the air pump is used for blowing air into the cavity;
the adjusting mechanism is used for adjusting the air outlet direction of the air outlet pipe;
the adjusting mechanism comprises a movable ball movably arranged on the inner wall of the second shell, and an air outlet pipe penetrates through the center of the movable ball and extends to the outside of the cavity;
the outer wall of one end of the air outlet pipe extending into the cavity is provided with a mounting seat, and one side of the mounting seat close to the movable ball is provided with an adjusting air bag;
the interior of the adjusting air bag is connected with the air outlet end of the air pump through an air pipe;
the protective mechanism is used for protecting the volleyballs moving into the second shell;
protection machanism has seted up the perforation including installing the protective housing at second shells inner wall, protective housing's side, and the opening position of fenestrate and outlet duct is corresponding, protective housing keeps away from one side of second casing and has seted up the draw-in groove, and the inside joint of draw-in groove has the rolling member.
2. The volleyball serving device for sports training of claim 1, wherein the material blocking mechanism comprises a baffle plate mounted on the outer wall of the partition member through a second telescopic member, and one end of the baffle plate extends to the bottom opening of the partition member.
3. The volleyball serving device for sports training of claim 1, wherein the pushing mechanism comprises a second rotating shaft movably arranged on the outer wall of the first shell, a rotating member is arranged on one side of the second rotating shaft, and a pushing member is mounted at one end, away from the second rotating shaft, of the rotating member through a first telescopic member;
one side of the pushing component is provided with a limiting plate used for limiting the pushed volleyballs;
the second driving part is used for driving the second rotating shaft to rotate.
4. The volleyball serving device for sports training of claim 3, wherein a through hole is formed in one side of the arc-shaped acceleration housing, which is close to the second rotating shaft, and one end of the pushing member extends into the arc-shaped acceleration housing through the through hole.
5. A volleyball service apparatus for sports training according to claim 4, wherein the through hole has a rear cushion member installed through an elastic member at a side inner wall thereof adjacent to the second housing, for cushioning the push member.
6. The volleyball serving device for sports training of claim 1, further comprising an agitation mechanism for agitating volleyballs stored in the first housing;
the stirring mechanism comprises a first rotating shaft movably arranged in the first shell, and a stirring component which is arranged in a hollow way is arranged on the side surface of the first rotating shaft;
the first driving component is used for driving the first rotating shaft to rotate.
7. The volleyball serving device for sports training of claim 6, further comprising a dust suction mechanism for sucking the volleyballs stored in the first housing;
the dust suction mechanism comprises an air suction hole formed in the outer wall of the stirring part and an air suction part used for sucking air in the stirring part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210057093.6A CN114392539B (en) | 2022-01-19 | 2022-01-19 | Volleyball serving device for physical training |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210057093.6A CN114392539B (en) | 2022-01-19 | 2022-01-19 | Volleyball serving device for physical training |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114392539A CN114392539A (en) | 2022-04-26 |
| CN114392539B true CN114392539B (en) | 2022-09-20 |
Family
ID=81231663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210057093.6A Active CN114392539B (en) | 2022-01-19 | 2022-01-19 | Volleyball serving device for physical training |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114392539B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5292119A (en) * | 1992-05-01 | 1994-03-08 | Norcross Charles E | Pneumatically operated ball release ball delivery apparatus |
| JP2007259901A (en) * | 2006-03-27 | 2007-10-11 | Meng-Fu Chen | Table tennis ball shooting apparatus |
| TW200927233A (en) * | 2007-12-17 | 2009-07-01 | Nat Univ Chin Yi Technology | Volleyball serve device |
| CN204364843U (en) * | 2015-01-19 | 2015-06-03 | 重庆工商大学 | A kind of table tenning ball servicing machine of rotary steerable |
| CN208031828U (en) * | 2018-04-09 | 2018-11-02 | 漯河医学高等专科学校 | A kind of adjustable for height table tenning ball servicing machine |
| CN210612831U (en) * | 2019-06-27 | 2020-05-26 | 武汉轻工大学 | Service mechanism and table tennis training machine |
| CN113856181A (en) * | 2021-06-30 | 2021-12-31 | 徐雪东 | Basketball training is with changeable and undirected ball receiving exercise device of ball point that falls |
-
2022
- 2022-01-19 CN CN202210057093.6A patent/CN114392539B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5292119A (en) * | 1992-05-01 | 1994-03-08 | Norcross Charles E | Pneumatically operated ball release ball delivery apparatus |
| JP2007259901A (en) * | 2006-03-27 | 2007-10-11 | Meng-Fu Chen | Table tennis ball shooting apparatus |
| TW200927233A (en) * | 2007-12-17 | 2009-07-01 | Nat Univ Chin Yi Technology | Volleyball serve device |
| CN204364843U (en) * | 2015-01-19 | 2015-06-03 | 重庆工商大学 | A kind of table tenning ball servicing machine of rotary steerable |
| CN208031828U (en) * | 2018-04-09 | 2018-11-02 | 漯河医学高等专科学校 | A kind of adjustable for height table tenning ball servicing machine |
| CN210612831U (en) * | 2019-06-27 | 2020-05-26 | 武汉轻工大学 | Service mechanism and table tennis training machine |
| CN113856181A (en) * | 2021-06-30 | 2021-12-31 | 徐雪东 | Basketball training is with changeable and undirected ball receiving exercise device of ball point that falls |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114392539A (en) | 2022-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4570607A (en) | Tennis ball throwing machine with continuously rotatable barrel having friction strip on one side only of inner wall | |
| CN109201215B (en) | A kind of mining ball mill and its electric-control system | |
| CN114392539B (en) | Volleyball serving device for physical training | |
| CA2581548A1 (en) | Recovery device of blasting medium and method therefor | |
| AU598316B2 (en) | Tennis practice device | |
| JP4725528B2 (en) | Rice husk discharge device in windbreaker | |
| CN108515165A (en) | A kind of fettling installation of casting | |
| JP2007167970A (en) | Mobile shot blast device and mobile shot blast system using the device | |
| CN212235933U (en) | Multi-angle automatic volleyball launching device convenient to train | |
| CN112293006A (en) | Seedling throwing equipment for seedling transplanter | |
| CN215427219U (en) | Automatic ball receiving and serving machine for basketball training | |
| JP2002079465A (en) | Dry ice blast device | |
| CN211935490U (en) | Volleyball serving device | |
| CN210815394U (en) | Novel rubber roll rice huller | |
| CN107931123A (en) | Paddy vibrates impurity-removing method and device | |
| US20040139955A1 (en) | Pneumatic ball projecting apparatus | |
| CN111569392A (en) | Volleyball pass device | |
| CN114832344A (en) | Table tennis training device convenient for training | |
| CN112742006B (en) | Soft diabolo with buffering effect | |
| JPH09300220A (en) | Blast machining device | |
| CN216302712U (en) | Cyclone discharging air supply device of powder material transportation semitrailer | |
| CN215781403U (en) | Basketball training emitter | |
| CN213031824U (en) | Table tennis transmitter convenient to accomodate and remove | |
| CN112808584B (en) | Rice huller with screening function | |
| CN213529801U (en) | Blackboard eraser cleaning device |
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 |