CN108939495B - Tennis teaching training optimization method - Google Patents
Tennis teaching training optimization method Download PDFInfo
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- CN108939495B CN108939495B CN201811157484.5A CN201811157484A CN108939495B CN 108939495 B CN108939495 B CN 108939495B CN 201811157484 A CN201811157484 A CN 201811157484A CN 108939495 B CN108939495 B CN 108939495B
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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
- A63B69/385—Training appliances or apparatus for special sports for tennis for practising the serve
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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
- A63B69/409—Stationarily-arranged devices for projecting balls or other bodies with pneumatic ball- or body-propelling means
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Abstract
The invention belongs to the technical field of tennis training, in particular to an optimization method for tennis teaching training, wherein a shell of a tennis launcher used in the method is provided with a launching port; a cavity is arranged in the launching box, a launching mechanism is arranged in the cavity, an opening is arranged at the left side of the cavity, and the launching box is obliquely arranged; the cavity is communicated with the ball inlet; the top of the launching box is provided with a sealing plate, the bottom of the right side of the launching box is fixedly connected with a guide pillar, and the guide pillar is used for being matched with a sliding block; the sealing plate is slidably arranged at the top of the launching box; the sliding block is arranged on the supporting plate in a sliding mode; the second gear is positioned above the second spring; a supporting unit is arranged on the left side of the first fixing plate and comprises a supporting column and a supporting rod; the tennis launcher used in the invention controls the first gear to rotate and extrude forwards and backwards and releases the first spring through the controller to launch tennis, and the controller controls the cylinder to stretch and retract to finely tune the launching angle during launching, thereby realizing irregular launching.
Description
Technical Field
The invention belongs to the technical field of tennis training, and particularly relates to an optimization method for tennis teaching training.
Background
With the continuous improvement of the competitive level, the living conditions of people are also continuously improved, the sports is gradually an important mode of public entertainment, more and more people begin to like the sports under the background of the vigorous development of the tennis, not only professional training players but also many amateurs perform tennis training at ordinary times, and how to improve the tennis training efficiency is a problem to be solved.
Some technical schemes of tennis ball launchers have also appeared in the prior art, for example, a chinese patent with application number 2011202539704 discloses a novel automatic tennis ball launcher, which comprises a launching mechanism, a launching tube, a ball containing disc and a case, wherein the launching tube and the ball containing disc are arranged at the top of the case, a ball inlet at the root of the launching tube is opposite to a ball outlet of the ball containing disc, the launching mechanism is arranged in the case, the launching mechanism comprises a motor, a disc spring, a ball hitting rod, a stop block, a compression spring, a connecting sleeve and a force adjusting handle, the connecting sleeve is connected with the end of the ball hitting rod, the connecting sleeve is connected with the motor shaft through the disc spring, the other end of the ball hitting rod interferes with the end of the stop block, the other end of the stop block is hinged with the case.
The technical scheme has a simple structure and can realize automation. However, in the technical scheme, the changing direction of the tennis ball has predictability, so that the tennis ball cannot better help a trainer to exercise the reaction speed and the swing strength of the tennis ball, and the scheme is limited.
Disclosure of Invention
In order to make up for the defects of the prior art, the tennis teaching training optimization method provided by the invention mainly aims to optimize tennis training. The tennis launcher used in the method controls the first gear to rotate forward and backward to extrude and loosen the first spring through the controller to launch tennis, and the controller controls the two cylinders to stretch differently to finely tune the launching angle during launching, so that the launching randomness is improved, and the tennis training efficiency is improved; the second gear is controlled to rotate through the controller, the second gear rotates to extrude the engaged second spring, so that the sliding block connected with the second spring horizontally slides on the supporting plate, the matched guide pillar is pushed up, the guide pillar drives the launching box to move upwards, the launching angle of the launching mechanism is adjusted again, the ball launching randomness is improved, and the tennis training efficiency is improved; meanwhile, the controller controls the motor to rotate forward and backward to drive the third spring to rotate, so that the third spring is meshed with the worm to rotate the worm, the supporting plate is driven to rotate, the launching angle of the launching mechanism is adjusted, the randomness of launching tennis is improved, and tennis training is optimized; the wind power and the wind speed before serving the ball are sensed by the wind power and wind speed sensor, signals are fed back to the controller, the controller controls the serving force and direction, and the training effect is prevented from being influenced by the departure of the ball; the air dryer air-dries training personnel's activity ground, avoids the ground to skid and influences the training effect.
The technical scheme adopted by the invention for solving the technical problems is as follows: an optimization method for tennis teaching training comprises the following steps:
s1: putting tennis into the tennis launcher, and replacing manual serve with the tennis launcher;
s2: additionally arranging a wind power and wind speed sensor, mounting the wind power and wind speed sensor on the tennis ball emitter in the S1, and connecting the wind power and wind speed sensor with the controller; the wind power and wind speed sensor is used for sensing wind power and wind speed before serving and feeding back signals to the controller, so that the serving strength and direction are adjusted timely;
s3: a visual catcher is additionally arranged and used for analyzing whether the hitting posture of the trainer is correct or not, and the visual catcher is connected with the controller in S2; when the vision catcher analyzes that the hitting posture of the trainee is incorrect, a signal is fed back to the controller, and the controller controls the tennis emitter to maintain the service state, so that the tennis is exercised for many times until the hitting posture is correct;
s4: installing a humidity detector in an activity area of the trainee in the S3 for detecting humidity, installing an air dryer, and connecting the humidity detector and the air dryer with a controller; when the humidity to be detected exceeds a limit value, the humidity detector feeds back a signal to the controller, and the controller controls the air dryer to automatically air-dry the movable ground;
the tennis ball emitter comprises a shell, a controller, an inductor, a ball inlet, an emitting port, an emitting mechanism, a first gear, a first spring, a second gear, a second spring, a supporting plate, a worm, a third spring and a motor, wherein the ball inlet is formed above the shell, the emitting port is formed in one side of the shell, and an emitting box is positioned inside the shell; a cavity is arranged in the launching box, a launching mechanism is arranged in the cavity, an opening is formed in the left side of the cavity, and the launching box is obliquely arranged; the cavity is communicated with the ball inlet; the top of the launching box is provided with a sealing plate, the bottom of the right side of the launching box is fixedly connected with a guide pillar, and the guide pillar is used for being matched with a sliding block; the sealing plate is slidably mounted at the top of the launching box, and the sliding of the sealing plate is controlled by a controller; the sliding block is slidably mounted on the supporting plate, the upper end of the sliding block is an inclined surface, the sliding block can push the guide pillar to move up and down when moving horizontally, so that the launching box is pushed to swing up and down, the sliding block is connected to the first fixing plate through the second spring, and the first fixing plate is fixedly mounted on the supporting plate; the second gear is positioned above the second spring and can be meshed with the second spring, the second spring can be extruded to stretch by the rotation of the second gear, the sliding block is pushed to move horizontally, and the rotation of the second gear is controlled by the controller; a supporting unit is arranged on the left side of the first fixing plate and used as a fulcrum of the launching box; the supporting unit comprises a supporting column and a supporting rod, the bottom of the supporting column is fixedly connected to the supporting plate, and a through groove is formed in the supporting column; a support rod is arranged in the through groove in a sliding manner; one end of the supporting rod is connected to the supporting plate through a spring, and the other end of the supporting rod is fixedly connected to the bottom of the launching box; the worm is rotatably arranged at the bottom of the shell, the top end of the worm is connected with the supporting plate, the worm can be meshed with the third spring, and the third spring can drive the worm to rotate so as to push the supporting plate to swing up and down; one end of the third spring is connected with an output shaft of the motor, and the rotation of the output shaft can drive the third spring to rotate so as to drive the worm to rotate; the other end of the third spring is fixedly connected with a second fixing plate which is fixedly connected to the bottom of the shell; the motor is positioned at the bottom of the shell, and the forward and reverse rotation of the motor is controlled by the controller; wherein,
the launching mechanism comprises an L-shaped plate, a launching plate, an air cylinder and an air source, the L-shaped plate is slidably mounted in the launching box, the launching plate is slidably mounted on the L-shaped plate, the right side of the L-shaped plate is fixedly connected with a first spring, an inductor is arranged on the L-shaped plate, and the inductor is communicated with the controller; the launching plate is connected to the inner wall of the launching box through two cylinders, and a spring is connected between the launching plate and the inner wall of the launching box; the controller respectively controls the two cylinders to have different expansion amounts so as to adjust the shooting angle, and air cavities of the cylinders are communicated with an air source through air pipes; the first gear is located above the first spring and can be meshed with the first spring, and rotation of the first gear is controlled by the controller. When the tennis ball launching box is used, tennis balls are placed into the ball inlet, the tennis balls fall onto the L-shaped plate in the launching box, the controller controls the first gear to rotate in the forward direction, and therefore the first spring is extruded, and the first spring drives the L-shaped plate to slide to the right side in the launching box; when the first gear rotates reversely, the first spring instantly pushes the L-shaped plate to slide to the left side in the launching box under the action of the elasticity of the first spring, so that the launching plate is driven to instantly push the tennis out of the launching port; after launching, the sensor arranged on the L-shaped plate senses no tennis ball, information is fed back to the controller, the controller controls the sealing plate to slide to one side, and a channel is opened to place the tennis ball in the ball inlet onto the L-shaped plate; when the tennis ball is launched, the controller controls the two cylinders connected with the launching plate to stretch differently, so that the launching plate is driven to rotate slightly, and the ball launching angle is adjusted; the controller controls the motor to rotate so as to drive the connected third spring to rotate, the third spring drives the meshed worm to rotate, the worm drives the supporting plate to rotate, and the supporting plate rotates so as to enable the launching box to move up and down under the support of the supporting unit and further adjust the launching angle of the launching mechanism; the controller controls the second gear to rotate, the second gear rotates and extrudes the engaged second spring, so that the sliding block connected with the second spring horizontally slides on the supporting plate, the matched guide post is pushed up, the guide post drives the launching box to move upwards, and the launching angle of the launching mechanism is adjusted; meanwhile, the controller controls the first gear to rotate forwards and backwards, tennis balls are launched by extruding and loosening the first spring, and the controller controls the cylinder to stretch and retract to finely adjust the launching angle during launching, so that the launching randomness is improved, and the training effect is improved; the second gear is controlled to rotate through the controller, the second gear rotates to extrude the engaged second spring, so that the sliding block connected with the second spring horizontally slides on the supporting plate, the matched guide pillar is pushed up, the guide pillar drives the launching box to move upwards, the launching angle of the launching mechanism is adjusted again, the ball launching randomness is improved, and the training effect is improved; meanwhile, the controller controls the motor to rotate forward and backward to drive the third spring to rotate, so that the third spring is meshed with the worm to rotate the worm, the supporting plate is driven to rotate, the launching angle of the launching mechanism is adjusted, the randomness of launching tennis balls is improved, and the training effect is improved.
Preferably, the tip of the worm is welded to the support plate. During the use, rotate as controller control motor to it is rotatory to drive No. three springs that are connected, and No. three springs drive the worm that meshes mutually and rotate, and the worm drives the backup pad and rotates, thereby the backup pad rotates and makes the transmission case produce under the support of support element and reciprocate, and then adjusts the transmission angle of launching mechanism, and the welding of worm top can strengthen backup pad and worm joint strength in the backup pad, improves the life of device.
Preferably, a group of air suction holes are uniformly distributed at the bottom of the L-shaped plate and used for sucking the tennis balls on the L-shaped plate. When the tennis ball dropping device is used, after a launching plate in the launching mechanism launches a tennis ball, the controller controls the sealing plate to open the channel, the tennis ball in the ball inlet is placed on the L-shaped plate, and the group of air suction holes are uniformly distributed at the bottom of the L-shaped plate, so that when the tennis ball drops, the falling tennis ball can be adsorbed on the L-shaped plate through the air suction holes, and the tennis ball is prevented from rolling.
Preferably, the two cylinders are arranged diagonally. When the tennis ball launching device is used, the cylinders which are arranged diagonally are used for launching tennis balls, the controller controls the cylinders to stretch out and draw back in different degrees respectively, the tennis ball launching angle of the launching plate can be controlled conveniently, and the training effect of the tennis ball launching device is improved.
Preferably, a rectangular groove is formed in one side, away from the cylinder, of the transmitting plate, an air bag is arranged in the rectangular groove, four cavities are formed in the air bag, and each cavity is communicated with an air source through a through hole; the arrangement of the through holes is rhombic. When the tennis ball launching device is used, the rectangular groove is formed in one side, far away from the air cylinder, of the launching plate, the air bag is arranged in the rectangular groove, when tennis balls need to be launched, the controller controls the air source to introduce air into the communicated cavity through the air pipe through one of the through holes, so that the air bag is locally protruded, the launching angle of the launching plate when the tennis balls are launched is adjusted, and the training effect of the tennis ball launching device is improved.
Preferably, the section of the steel wire of the third spring is rectangular. During the use, compare with conventional spring, set up the steel wire cross-section into frictional force when No. three springs of rectangle can increase and worm meshing to improve transmission efficiency, and then improve the work efficiency of device.
The invention has the following beneficial effects:
1. the tennis ball launching device used in the method controls the first gear to rotate and extrude forwards and backwards and releases the first spring through the controller to launch tennis balls, and the controller controls the two cylinders to stretch differently to carry out launching angle fine adjustment during launching, so that launching randomness is improved, and a training effect is improved; the second gear is controlled to rotate through the controller, the second gear rotates to extrude the engaged second spring, so that the sliding block connected with the second spring horizontally slides on the supporting plate, the matched guide pillar is pushed up, the guide pillar drives the launching box to move upwards, the launching angle of the launching mechanism is adjusted again, the ball launching randomness is improved, and the training effect is improved; meanwhile, the controller controls the motor to rotate forward and backward to drive the third spring to rotate, so that the third spring is meshed with the worm to rotate the worm, the supporting plate is driven to rotate, the launching angle of the launching mechanism is adjusted, the randomness of launching tennis balls is improved, and the training effect is improved; the wind power and the wind speed before serving the ball are sensed by the wind power and wind speed sensor, signals are fed back to the controller, the controller controls the serving force and direction, and the training effect is prevented from being influenced by the departure of the ball; the air dryer air-dries training personnel's activity ground, avoids the ground to skid and influences the training effect.
2. According to the tennis teaching training optimization method, the tennis emitter used in the method is provided with the group of air suction holes uniformly distributed at the bottom of the L-shaped plate, when the emitting plate in the tennis shooting mechanism emits tennis balls, the controller controls the sealing plate to open the channel, the tennis balls in the ball inlet fall onto the L-shaped plate, and the falling tennis balls are adsorbed on the L-shaped plate by the air suction holes, so that the tennis balls are prevented from rolling.
3. According to the tennis teaching training optimization method, the rectangular groove is formed in one side, away from the cylinder, of the launching plate, the air bag is arranged in the rectangular groove, when tennis is required to be launched, the controller controls the air source to enable air to enter the communicated cavity through the through hole by introducing the air into the through hole through the air pipe, so that the air bag is locally protruded, the launching angle of the launching plate when the tennis is launched is adjusted, and the training effect of the device is improved.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a schematic structural view of a tennis ball launcher for use in the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a cross-sectional view taken at B-B of FIG. 3;
in the figure: the device comprises a shell 1, a launching box 2, a cavity 21, a sealing plate 22, a guide post 23, a supporting unit 3, a supporting column 31, a supporting rod 32, a ball inlet 4, a launching port 5, a launching mechanism 6, an L-shaped plate 61, a launching plate 62, an air cylinder 63, an air suction hole 64, an air bag 65, a through hole 66, a first gear 7, a first spring 8, a second gear 9, a second spring 10, a supporting plate 11, a worm 12, a third spring 13, a motor 14 and a sliding block 15.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 4, the tennis teaching training optimization method of the present invention includes the following steps:
s1: putting tennis into the tennis launcher, and replacing manual serve with the tennis launcher;
s2: additionally arranging a wind power and wind speed sensor, mounting the wind power and wind speed sensor on the tennis ball emitter in the S1, and connecting the wind power and wind speed sensor with the controller; the wind power and wind speed sensor is used for sensing wind power and wind speed before serving and feeding back signals to the controller, so that the serving strength and direction are adjusted timely;
s3: a visual catcher is additionally arranged and used for analyzing whether the hitting posture of the trainer is correct or not, and the visual catcher is connected with the controller in S2; when the vision catcher analyzes that the hitting posture of the trainee is incorrect, a signal is fed back to the controller, and the controller controls the tennis emitter to maintain the service state, so that the tennis is exercised for many times until the hitting posture is correct;
s4: installing a humidity detector in an activity area of the trainee in the S3 for detecting humidity, installing an air dryer, and connecting the humidity detector and the air dryer with a controller; when the humidity to be detected exceeds a limit value, the humidity detector feeds back a signal to the controller, and the controller controls the air dryer to automatically air-dry the movable ground;
the tennis launcher comprises a shell 1, a controller, an inductor, a ball inlet 4, a launching port 5, a launching mechanism 6, a first gear 7, a first spring 8, a second gear 9, a second spring 10, a support plate 11, a worm 12, a third spring 13 and a motor 14, wherein the ball inlet 4 is arranged above the shell 1, the launching port 5 is arranged on one side of the shell 1, and a launching box 2 is positioned inside the shell 1; a cavity 21 is arranged in the launching box 2, the launching mechanism 6 is arranged in the cavity 21, an opening is formed in the left side of the cavity 21, and the launching box 2 is obliquely arranged; the cavity 21 is communicated with the ball inlet 4; a sealing plate 22 is arranged at the top of the launching box 2, a guide post 23 is fixedly connected to the bottom of the right side of the launching box 2, and the guide post 23 is used for being matched with the sliding block 15; the sealing plate 22 is slidably mounted at the top of the launching box 2, and the sliding of the sealing plate 22 is controlled by a controller; the sliding block 15 is slidably mounted on the supporting plate 11, the upper end of the sliding block 15 is an inclined surface, the sliding block 15 can push the guide post 23 to move up and down when moving horizontally, so that the launching box 2 is pushed to swing up and down, the sliding block 15 is connected to a first fixing plate through a second spring 10, and the first fixing plate is fixedly mounted on the supporting plate 11; the second gear 9 is positioned above the second spring 10, the second gear 9 can be meshed with the second spring 10, the second spring 10 can be extruded and stretched by the rotation of the second gear 9, the sliding block 15 is pushed to move horizontally, and the rotation of the second gear 9 is controlled by the controller; a supporting unit 3 is arranged on the left side of the first fixing plate, and the supporting unit 3 is used as a fulcrum of the launching box 2; the supporting unit 3 comprises a supporting column 31 and a supporting rod 32, the bottom of the supporting column 31 is fixedly connected to the supporting plate 11, and a through groove is formed in the supporting column 31; a support rod 32 is arranged in the through groove in a sliding manner; one end of the support rod 32 is connected to the support plate 11 through a spring, and the other end of the support rod 32 is fixedly connected to the bottom of the launching box 2; the worm 12 is rotatably installed at the bottom of the shell 1, the top end of the worm 12 is connected with the support plate 11, the worm 12 can be meshed with the third spring 13, and the third spring 13 can drive the worm 12 to rotate so as to push the support plate 11 to swing up and down; one end of the third spring 13 is connected with an output shaft of the motor 14, and the rotation of the output shaft can drive the third spring 13 to rotate, so that the worm 12 is driven to rotate; the other end of the third spring 13 is fixedly connected with a second fixing plate which is fixedly connected to the bottom of the shell 1; the motor 14 is positioned at the bottom of the shell 1, and the forward and reverse rotation of the motor 14 is controlled by a controller; wherein,
the launching mechanism 6 comprises an L-shaped plate 61, a launching plate 62, an air cylinder 63 and an air source, wherein the L-shaped plate 61 is slidably mounted in the launching box 2, the launching plate 62 is slidably mounted on the L-shaped plate 61, the right side of the L-shaped plate 61 is fixedly connected with a first spring 8, an inductor is arranged on the L-shaped plate 61, and the inductor is communicated with a controller; the launching plate 62 is connected to the inner wall of the launching box 2 through two cylinders 63, and a spring is connected between the launching plate 62 and the inner wall of the launching box 2; the controller respectively controls the two cylinders 63 to have different expansion amounts so as to adjust the shooting angle, and air cavities of the cylinders 63 are communicated with an air source through air pipes; no. one gear 7 is located No. one spring 8 top, and No. one gear 7 can mesh with No. one spring 8, and No. one gear 7 rotates and is controlled by the controller. When the tennis ball launching box is used, tennis balls are placed into the ball inlet 4, the tennis balls fall onto the L-shaped plate 61 in the launching box 2, the controller controls the first gear 7 to rotate in the forward direction, and therefore the first spring 8 is extruded, and the first spring 8 drives the L-shaped plate 61 to slide to the right side in the launching box 2; when the first gear 7 rotates reversely, the first spring 8 instantly pushes the L-shaped plate 61 to slide to the left side in the launching box 2 under the action of the elasticity of the first spring, so that the launching plate 62 is driven to instantly push the tennis out of the launching port 5; after launching, the sensor arranged on the L-shaped plate 61 senses no tennis ball, information is fed back to the controller, the controller controls the sealing plate 22 to slide to one side, and a channel is opened to place the tennis ball in the ball inlet 4 on the L-shaped plate 61; when launching tennis balls, the controller controls the two cylinders 63 connected with the launching plate 62 to stretch differently, so as to drive the launching plate 62 to rotate slightly and adjust the ball launching angle; the controller controls the motor 14 to rotate so as to drive the connected third spring 13 to rotate, the third spring 13 drives the meshed worm 12 to rotate, the worm 12 drives the supporting plate 11 to rotate, and the supporting plate 11 rotates so as to enable the launching box 2 to move up and down under the support of the supporting unit 3, so that the launching angle of the launching mechanism 6 is adjusted; the controller controls the second gear 9 to rotate, the second gear 9 rotates to extrude the engaged second spring 10, so that the sliding block 15 connected with the second spring 10 horizontally slides on the supporting plate 11 to push up the matched guide post 23, the guide post 23 drives the launching box 2 to move upwards, and the launching angle of the launching mechanism 6 is adjusted; meanwhile, the controller controls the first gear 7 to rotate forwards and backwards, tennis balls are shot by squeezing and loosening the first spring 8, and the controller controls the cylinder 63 to stretch and retract to finely adjust the shooting angle during shooting, so that the shooting randomness is improved, and the training effect is improved; the second gear 9 can be controlled to rotate through the controller, the second gear 9 rotates to extrude the second spring 10 which is meshed with the second gear, so that the sliding block 15 connected with the second spring 10 horizontally slides on the supporting plate 11 to push and jack the matched guide post 23, the guide post 23 drives the launching box 2 to move upwards, the launching angle of the launching mechanism 6 is adjusted again, the ball launching randomness is improved, and the training effect is improved; meanwhile, the controller controls the motor 14 to rotate forward and backward to drive the third spring 13 to rotate, so that the third spring is meshed with the worm 12 to rotate the worm 12, further the supporting plate 11 is driven to rotate, the launching angle of the launching mechanism 6 is adjusted, the randomness of launching tennis balls is improved, and the training effect is improved.
In one embodiment, the top end of the worm 12 is welded to the support plate 11. During the use, rotate as controller control motor 14 to it is rotatory to drive the No. three spring 13 that is connected, No. three spring 13 drives engaged with worm 12 and rotates, and worm 12 drives backup pad 11 and rotates, thereby backup pad 11 rotates and makes launching box 2 reciprocate under the support of support element 3, and then adjusts the launching angle of launching mechanism 6, and the welding of worm 12 top can strengthen backup pad 11 and worm 12 joint strength on backup pad 11, improves the life of device.
In one embodiment, a group of air suction holes 64 are uniformly distributed at the bottom of the L-shaped plate 61, and the air suction holes 64 are used for sucking tennis balls on the L-shaped plate 61. When the tennis ball launching device is used, after the launching plate 62 in the launching mechanism 6 launches a tennis ball, the controller controls the sealing plate 22 to open the channel, the tennis ball in the ball inlet 4 is placed on the L-shaped plate 61, and the group of air suction holes 64 are uniformly distributed at the bottom of the L-shaped plate 61, so that when the tennis ball falls, the falling tennis ball is adsorbed on the L-shaped plate 61 through the air suction holes 64, and the tennis ball is prevented from rolling.
As one embodiment, the two cylinders 63 are arranged diagonally. When the tennis ball launching device is used, when the cylinders 63 which are arranged diagonally launch tennis balls on the launching plate 62, the controller controls the cylinders 63 to respectively stretch in different degrees, so that the tennis ball launching angle of the launching plate 62 can be conveniently controlled, and the training effect of the tennis ball launching device is improved.
As an embodiment, a rectangular groove is formed in one side of the launching plate 62, which is far away from the cylinder 63, an air bag 65 is arranged in the rectangular groove, four cavities are arranged in the air bag 65, and each cavity is communicated with an air source through a through hole 66; the arrangement of the through holes 66 is diamond-shaped. When the tennis ball launching device is used, the rectangular groove is formed in one side, far away from the air cylinder 63, of the launching plate 62, the air bag 65 is arranged in the rectangular groove, when tennis balls need to be launched, the controller controls the air source to introduce air into the communicated cavity through the air pipe and the through hole 66, so that the air bag 65 is locally protruded, the launching angle of the launching plate 62 when the tennis balls are launched is adjusted, and the training effect of the tennis ball launching device is improved.
In one embodiment, the cross section of the steel wire of the third spring 13 is rectangular. When the device is used, compared with a conventional spring, the third spring 13 with the rectangular steel wire section can increase the friction force when being meshed with the worm 12, so that the transmission efficiency is improved, and the working efficiency of the device is further improved.
When the tennis ball launching box is used, tennis balls are placed into the ball inlet 4, the tennis balls fall onto the L-shaped plate 61 in the launching box 2, the controller controls the first gear 7 to rotate in the forward direction, and therefore the first spring 8 is extruded, and the first spring 8 drives the L-shaped plate 61 to slide to the right side in the launching box 2; when the first gear 7 rotates reversely, the first spring 8 instantly pushes the L-shaped plate 61 to slide to the left side in the launching box 2 under the action of the elasticity of the first spring, so that the launching plate 62 is driven to instantly push the tennis out of the launching port 5; after launching, the sensor arranged on the L-shaped plate 61 senses no tennis ball, information is fed back to the controller, the controller controls the sealing plate 22 to slide to one side, and a channel is opened to place the tennis ball at the ball inlet 4 on the L-shaped plate 61; when launching tennis balls, the controller controls the two cylinders 63 connected with the launching plate 62 to stretch differently, so as to drive the launching plate 62 to rotate slightly and adjust the ball launching angle; the controller controls the motor 14 to rotate so as to drive the connected third spring 13 to rotate, the third spring 13 drives the meshed worm 12 to rotate, the worm 12 drives the supporting plate 11 to rotate, and the supporting plate 11 rotates so as to enable the launching box 2 to move up and down under the support of the supporting unit 3, so that the launching angle of the launching mechanism 6 is adjusted; the controller controls the second gear 9 to rotate, the second gear 9 rotates to extrude the engaged second spring 10, so that the sliding block 15 connected with the second spring 10 horizontally slides on the supporting plate 11 to push up the matched guide post 23, the guide post 23 drives the launching box 2 to move upwards, and the launching angle of the launching mechanism 6 is adjusted; meanwhile, the controller controls the first gear 7 to rotate forwards and backwards, tennis balls are shot by squeezing and loosening the first spring 8, and the controller controls the cylinder 63 to stretch and retract to finely adjust the shooting angle during shooting, so that the shooting randomness is improved, and the training effect is improved; the second gear 9 can be controlled to rotate through the controller, the second gear 9 rotates to extrude the second spring 10 which is meshed with the second gear, so that the sliding block 15 connected with the second spring 10 horizontally slides on the supporting plate 11 to push and jack the matched guide post 23, the guide post 23 drives the launching box 2 to move upwards, the launching angle of the launching mechanism 6 is adjusted again, the ball launching randomness is improved, and the training effect is improved; meanwhile, the controller controls the motor 14 to rotate forward and backward to drive the third spring 13 to rotate, so that the third spring is meshed with the worm 12 to rotate the worm 12, further the support plate 11 is driven to rotate, the launching angle of the launching mechanism 6 is adjusted, the randomness of launching tennis balls is improved, and the training effect is improved; when the controller controls the motor 14 to rotate, the connected third spring 13 is driven to rotate, the third spring 13 drives the meshed worm 12 to rotate, the worm 12 drives the supporting plate 11 to rotate, the supporting plate 11 rotates, so that the launching box 2 moves up and down under the support of the supporting unit 3, the launching angle of the launching mechanism 6 is adjusted, the top end of the worm 12 is welded on the supporting plate 11, the connecting strength of the supporting plate 11 and the worm 12 can be enhanced, and the service life of the device is prolonged; meanwhile, after the launching plate 62 in the launching mechanism 6 launches the tennis ball, the controller controls the closing plate 22 to open the channel, the tennis ball in the ball inlet 4 is placed on the L-shaped plate 61, and a group of air suction holes 64 are uniformly distributed at the bottom of the L-shaped plate 61, so that when the tennis ball falls, the falling tennis ball is adsorbed on the L-shaped plate 61 through the air suction holes 64, and the tennis ball is prevented from rolling; a rectangular groove is formed in one side, far away from the air cylinder 63, of the launching plate 62, an air bag 65 is arranged in the rectangular groove, when tennis ball launching is needed, the controller controls the air source to enable air to enter the communicated cavity through one through hole 66 through the air pipe, so that the air bag 65 is locally protruded, the launching angle of the launching plate 62 when the tennis ball is launched is adjusted, and the training effect of the device is improved; simultaneously compare with conventional spring, set up the steel wire cross-section into the frictional force when No. three spring 13 of rectangle can increase and worm 12 meshing to improve transmission efficiency, and then improve the work efficiency of device.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in fig. 2, which is based on the orientation or positional relationship shown in fig. 2, and is used merely for convenience in describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be taken as limiting the scope of the present invention.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. An optimization method for tennis teaching training is characterized by comprising the following steps:
s1: putting tennis into the tennis launcher, and replacing manual serve with the tennis launcher;
s2: additionally arranging a wind power and wind speed sensor, mounting the wind power and wind speed sensor on the tennis ball emitter in the S1, and connecting the wind power and wind speed sensor with the controller; the wind power and wind speed sensor is used for sensing wind power and wind speed before serving and feeding back signals to the controller, so that the serving strength and direction are adjusted timely;
s3: a visual catcher is additionally arranged and used for analyzing whether the hitting posture of the trainer is correct or not, and the visual catcher is connected with the controller in S2; when the vision catcher analyzes that the hitting posture of the trainee is incorrect, a signal is fed back to the controller, and the controller controls the tennis emitter to maintain the service state, so that the tennis is exercised for many times until the hitting posture is correct;
s4: installing a humidity detector in an activity area of the trainee in the S3 for detecting humidity, installing an air dryer, and connecting the humidity detector and the air dryer with a controller; when the humidity to be detected exceeds a limit value, the humidity detector feeds back a signal to the controller, and the controller controls the air dryer to automatically air-dry the movable ground;
the tennis emitter comprises a shell (1), a controller, an inductor, a ball inlet (4), an emitting port (5), an emitting mechanism (6), a first gear (7), a first spring (8), a second gear (9), a second spring (10), a supporting plate (11), a worm (12), a third spring (13) and a motor (14), wherein the ball inlet (4) is formed above the shell (1), the emitting port (5) is formed in one side of the shell (1), and an emitting box (2) is located inside the shell (1); a cavity (21) is arranged in the launching box (2), a launching mechanism (6) is arranged in the cavity (21), an opening is formed in the left side of the cavity (21), and the launching box (2) is obliquely arranged; the cavity (21) is communicated with the ball inlet (4); a sealing plate (22) is arranged at the top of the launching box (2), a guide pillar (23) is fixedly connected to the bottom of the right side of the launching box (2), and the guide pillar (23) is used for being matched with the sliding block (15) for use; the sealing plate (22) is slidably mounted at the top of the launching box (2), and the sliding of the sealing plate (22) is controlled by a controller; the sliding block (15) is slidably mounted on the supporting plate (11), the upper end of the sliding block (15) is an inclined surface, the sliding block (15) can push the guide post (23) to move up and down when moving horizontally, so that the launching box (2) is pushed to swing up and down, the sliding block (15) is connected to a first fixing plate through a second spring (10), and the first fixing plate is fixedly mounted on the supporting plate (11); the second gear (9) is positioned above the second spring (10), the second gear (9) can be meshed with the second spring (10), the second gear (9) can extrude the second spring (10) to stretch when rotating, so that the sliding block (15) is pushed to move horizontally, and the rotation of the second gear (9) is controlled by the controller; a supporting unit (3) is arranged on the left side of the first fixing plate, and the supporting unit (3) is used as a fulcrum of the launching box (2); the supporting unit (3) comprises a supporting column (31) and a supporting rod (32), the bottom of the supporting column (31) is fixedly connected to the supporting plate (11), and a through groove is formed in the supporting column (31); a support rod (32) is arranged in the through groove in a sliding manner; one end of the supporting rod (32) is connected to the supporting plate (11) through a spring, and the other end of the supporting rod (32) is fixedly connected to the bottom of the launching box (2); the worm (12) is rotatably installed at the bottom of the shell (1), the top end of the worm (12) is connected with the support plate (11), the worm (12) can be meshed with the third spring (13), and the third spring (13) can rotate to drive the worm (12) to rotate, so that the support plate (11) is pushed to swing up and down; one end of the third spring (13) is connected with an output shaft of the motor (14), the rotation of the output shaft can drive the third spring (13) to rotate so as to drive the worm (12) to rotate, the other end of the third spring (13) is fixedly connected with a second fixing plate, and the second fixing plate is fixedly connected to the bottom of the shell (1); the motor (14) is positioned at the bottom of the shell (1), and the forward and reverse rotation of the motor (14) is controlled by a controller; wherein,
the launching mechanism (6) comprises an L-shaped plate (61), a launching plate (62), an air cylinder (63) and an air source, wherein the L-shaped plate (61) is slidably mounted in the launching box (2), the launching plate (62) is slidably mounted on the L-shaped plate (61), the right side of the L-shaped plate (61) is fixedly connected with a first spring (8), an inductor is arranged on the L-shaped plate (61), and the inductor is communicated with a controller; the launching plate (62) is connected to the inner wall of the launching box (2) through two cylinders (63), and a spring is connected between the launching plate (62) and the inner wall of the launching box (2); the controller respectively controls the two cylinders (63) to have different expansion amounts, so that the shooting angle is adjusted, and the air cavities of the cylinders (63) are communicated with an air source through air pipes; the first gear (7) is positioned above the first spring (8), the first gear (7) can be meshed with the first spring (8), and the rotation of the first gear (7) is controlled by a controller; the two cylinders (63) are arranged diagonally.
2. The tennis teaching training optimization method of claim 1, wherein: the top end of the worm (12) is welded on the support plate (11).
3. The tennis teaching training optimization method of claim 1, wherein: a group of air suction holes (64) are uniformly distributed at the bottom of the L-shaped plate (61), and the air suction holes (64) are used for adsorbing tennis balls on the L-shaped plate (61).
4. The tennis teaching training optimization method of claim 1, wherein: a rectangular groove is formed in one side, away from the air cylinder (63), of the launching plate (62), an air bag (65) is arranged in the rectangular groove, four cavities are formed in the air bag (65), and each cavity is communicated with an air source through a through hole (66); the arrangement of the through holes (66) is in a diamond shape.
5. The tennis teaching training optimization method of claim 1, wherein: the section of a steel wire of the third spring (13) is rectangular.
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| CN112221104A (en) * | 2020-10-24 | 2021-01-15 | 邵阳学院 | Special vibration discharge type football pitching machine for football training |
| CN112973071A (en) * | 2021-03-05 | 2021-06-18 | 陕西理工大学 | Portable table tennis exerciser |
| CN114558311B (en) * | 2022-03-07 | 2023-07-25 | 沈阳体育学院 | Tennis service training device for physical education |
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| KR20030063603A (en) * | 2002-01-23 | 2003-07-31 | (주)이도전자 | A hit training plane of a baseball |
| CN203564747U (en) * | 2013-12-02 | 2014-04-30 | 河北联合大学 | Volleyball trainer |
| CN204073339U (en) * | 2014-10-09 | 2015-01-07 | 湖南安全技术职业学院 | A kind of tennis posture correction device |
| CN204293821U (en) * | 2014-12-25 | 2015-04-29 | 胡显韬 | A kind of tennis serve machine |
| CN204862990U (en) * | 2015-08-31 | 2015-12-16 | 曾凯 | Automatic device that weathers in ground |
| CN206508504U (en) * | 2016-10-12 | 2017-09-22 | 东北林业大学 | Badminton training |
| CN107088298A (en) * | 2017-06-13 | 2017-08-25 | 淄博职业学院 | A kind of shootaround system |
| CN108434705A (en) * | 2018-05-10 | 2018-08-24 | 宜春学院 | Intelligence table tennis training system |
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