阅读说明：本技术 一种智能网球发射器 (Intelligent tennis emitter ) 是由 刘艳峰 于 2021-09-09 设计创作，主要内容包括：本发明公开了一种智能网球发射器,包括机壳,机壳内设有调整腔,调整腔下端壁内设有控制腔,控制腔下侧设有第一角度调整机构,第一角度调整机构能够带动机壳绕着铰接轴进行转动,从而调整击球的竖直方向的角度,控制腔以及调整腔内设有第二角度调整机构,第二角度调整机构能够调整击球的水平方向的角度,机壳内设有发射机构,通过第一角度调整机构内设有的两个放置板的升降,完成网球竖直方向角度的调整,通过第二角度调整机构内设置的能够水平转动的发射器,实现网球水平方向角度的调整,保证网球训练的效果,通过设置的语音识别器实现训练人员远程即可操控,不需要走近进行调整,节约时间和精力。(The invention discloses an intelligent tennis ball emitter, which comprises a casing, wherein an adjusting cavity is arranged in the casing, a control cavity is arranged in the lower end wall of the adjusting cavity, a first angle adjusting mechanism is arranged at the lower side of the control cavity and can drive the casing to rotate around a hinge shaft so as to adjust the angle of a vertical direction of a ball hitting, a second angle adjusting mechanism is arranged in the control cavity and the adjusting cavity and can adjust the angle of the horizontal direction of the ball hitting, an emitting mechanism is arranged in the casing, the adjustment of the angle of the vertical direction of a tennis ball is completed through the lifting of two placing plates arranged in the first angle adjusting mechanism, the adjustment of the angle of the horizontal direction of the tennis ball is realized through the emitter which is arranged in the second angle adjusting mechanism and can rotate horizontally, the effect of tennis ball training is ensured, and the remote control of a trainer can be realized through an arranged voice recognizer, the adjustment is not needed to be performed by approaching, so that the time and the energy are saved.)

1. An intelligence tennis transmitter, includes the casing, its characterized in that: an adjusting cavity is arranged in the shell, a control cavity is arranged in the lower end wall of the adjusting cavity, a thread cavity is arranged in the lower end wall of the control cavity, two lifting cavities which are bilaterally symmetrical are arranged in the right end wall of the thread cavity, a transport cavity is arranged in the upper end wall of the adjusting cavity, a limiting cavity is arranged in the rear end wall of the transport cavity, an inlet arc-shaped plate is fixedly connected to the upper end surface of the shell, a connecting plate is fixedly connected to the lower end surface of the shell, a hinged shaft is arranged in the connecting plate, a first angle adjusting mechanism is arranged on the lower side of the control cavity, the shell can be driven by the first angle adjusting mechanism to rotate around the hinged shaft, so that the angle of the vertical direction of a batting is adjusted, and a second angle adjusting mechanism is arranged in the control cavity and the adjusting cavity and can adjust the angle of the horizontal direction of the batting;

a voice recognizer is arranged at the upper end of the control cavity and can recognize voice commands, a transmitting mechanism is arranged in the casing and comprises a ball placing mechanism, a transmitter is arranged in the adjusting cavity, a transmitting cavity is arranged in the transmitter, a limiting plate is arranged in the control cavity, a limiting cavity is arranged in the limiting plate, two sliding cavities which are symmetrical front and back are arranged in the front end wall and the rear end wall of the limiting cavity, a sliding plate is connected in a sliding manner in the sliding cavities and fixedly connected with a sliding baffle, a limiting spring is arranged between the sliding plate and the sliding cavity, a transmitting block is connected in the transmitting cavity in a sliding manner, a return spring is arranged between the transmitting block and the transmitting cavity, a connecting rod is fixedly connected with the transmitting block, a middle block is fixedly connected with the connecting rod, and a limiting triangular cone is fixedly connected with the middle block, the right end of the connecting rod is provided with an elastic rope which can be tensioned to drive the connecting rod to move, so that the tennis ball is driven to be shot out through the launching block.

2. A smart tennis transmitter as described in claim 1, wherein: put ball mechanism and include restriction chamber rear end wall fixed connection's restriction motor, restriction motor power is connected with the restriction axle, restriction axle fixedly connected with restriction connecting rod, the restriction connecting rod other end is located the transportation intracavity to fixedly connected with cowl, transportation chamber fixedly connected with baffle, baffle left end face fixedly connected with inductor, the transportation intracavity is equipped with the air pump, the transportation chamber with the transmission chamber passes through the transportation pipeline UNICOM that is equipped with in the casing.

3. A smart tennis transmitter as described in claim 1, wherein: the second angle adjusting mechanism comprises a control motor fixedly connected with the end wall of the control cavity, the control motor is in power connection with a rotating shaft fixedly connected with the end face of the transmitter, the rotating shaft is fixedly connected with a rotating plate, a hydraulic cavity is arranged in the rotating plate, the hydraulic cavity is in sliding connection with a hydraulic plate, a force storage cavity is arranged in the rotating plate, the other end of the hydraulic plate is located on a force storage rod in the force storage cavity, the force storage rod is fixedly connected with a force storage traction plate, the rotating plate is fixedly connected with a limiting plate, and two symmetrical starting cavities are arranged in the front end wall and the rear end wall of the hydraulic cavity.

4. A smart tennis transmitter as recited in claim 3, wherein: start intracavity sliding connection and start the board, start the board with start the chamber and connect and be equipped with horizontal spring, start board fixedly connected with other end is located hold the pole of supporting of power intracavity, start board fixedly connected with other end with sliding plate fixed connection's haulage rope, hold power the haulage plate front and back end and be equipped with the power chamber of holding of two symmetries, hold power chamber lower extreme wall and rotate and be connected with the directive wheel, the rear side hold power chamber lower extreme wall fixedly connected with dynamics motor, dynamics motor power is connected with the dynamics axle, the front side hold power chamber lower extreme wall and rotate and be connected with the dynamics axle, dynamics axle fixedly connected with tight pulley, elasticity rope one end is passed through reverse wheel is in backward fixed connection in the tight pulley.

5. A smart tennis transmitter as recited in claim 1, wherein: first angle guiding mechanism includes the threaded spindle that control motor power is connected, the threaded spindle lower extreme rotate connect in end wall under the threaded cavity, threaded cavity sliding connection have threaded connection in the thread plate of threaded spindle, threaded cavity upper end and lower extreme respectively with two lift chamber UNICOM, lift intracavity sliding connection has the lifter plate, lifter plate fixedly connected with lower extreme runs through the lifter of casing, the lifter is articulated to be equipped with places the board.

6. A smart tennis transmitter as recited in claim 1, wherein: an oil tank is arranged in the rotating plate, and a hydraulic pump is arranged at the position where the right end of the oil tank is communicated with the hydraulic cavity and communicated with the hydraulic cavity.

Technical Field

The invention relates to the field of sports equipment, in particular to an intelligent tennis emitter.

Background

When an athlete and students in a physical education class train, at least one accompanying training is generally needed, the training effect is poor due to the fact that accompanying training personnel are lacked or the accompanying training is unstable in launching angle, distance, ball rotation and other technologies, the training effect is poor, the existing tennis launcher on the market cannot correctly aim at the trainer to serve the tennis, and manual adjustment is needed if the serving angle and the serving angle need to be adjusted, and the training is very inconvenient.

Disclosure of Invention

It is an object of the present invention to provide an intelligent tennis ball launcher which overcomes the above-mentioned drawbacks of the prior art.

The invention relates to an intelligent tennis ball emitter, which comprises a casing, wherein an adjusting cavity is arranged in the casing, the left end of the adjusting cavity is opened, a control cavity is arranged in the lower end wall of the adjusting cavity, the control cavity is communicated with the adjusting cavity, a threaded cavity is arranged in the lower end wall of the control cavity, two lifting cavities which are bilaterally symmetrical are arranged in the right end wall of the threaded cavity, a conveying cavity is arranged in the upper end wall of the adjusting cavity, a limiting cavity is arranged in the rear end wall of the conveying cavity, an inlet arc-shaped plate is fixedly connected to the upper end surface of the casing and can be communicated with the conveying cavity, a connecting plate is fixedly connected to the lower end surface of the casing, a hinge shaft is arranged in the connecting plate and can be rotatably connected to a base capable of driving the casing to move, a first angle adjusting mechanism is arranged on the lower side of the control cavity and can drive the casing to rotate around the hinge shaft, thereby adjusting the angle of the vertical direction of the batting, wherein a second angle adjusting mechanism is arranged in the control cavity and the adjusting cavity, and the second angle adjusting mechanism can adjust the angle of the horizontal direction of the batting;

a voice recognizer is arranged at the upper end of the control cavity and can recognize voice commands, a transmitting mechanism is arranged in the casing and comprises a ball placing mechanism, a transmitter is arranged in the adjusting cavity, a transmitting cavity is arranged in the transmitter, a limiting plate is arranged in the control cavity, a limiting cavity is arranged in the limiting plate, two sliding cavities which are symmetrical front and back are arranged in the front end wall and the rear end wall of the limiting cavity, a sliding plate is connected in the sliding cavity in a sliding mode and fixedly connected with a sliding baffle plate of which the other end can enter the limiting cavity, a limiting spring is arranged in the sliding plate and connected with the sliding cavities, a transmitting block is connected in the transmitting cavity in a sliding mode and connected with the transmitting cavity and provided with a return spring, the transmitting block is fixedly connected with a connecting rod of which the other end is positioned in the adjusting cavity, and the connecting rod is fixedly connected with an intermediate block which can enter the limiting cavity, the middle block is fixedly connected with a limiting triangular cone, an elastic rope is arranged at the right end of the connecting rod and can be tensioned to drive the connecting rod to move, so that the tennis ball is driven to be shot out through the launching block, the sliding baffle can limit the limiting triangular cone to move, the connecting rod is limited to move, and the elastic rope can be tensioned to store energy.

Further, put the ball mechanism and include restriction chamber rear end wall fixed connection's restriction motor, restriction motor power is connected with the restriction axle, restriction axle fixedly connected with restriction connecting rod, the restriction connecting rod other end is located the transportation intracavity to fixedly connected with cowl, transportation chamber fixedly connected with baffle, baffle left end face fixedly connected with inductor, the transportation intracavity is equipped with the air pump, the transportation chamber with the transmission chamber passes through the transportation pipeline UNICOM that is equipped with in the casing.

Further, the second angle adjusting mechanism comprises a control motor fixedly connected with the lower end wall of the control cavity, the control motor is in power connection with a rotating shaft fixedly connected with the lower end face of the emitter, the rotating shaft is fixedly connected with a rotating plate, a hydraulic cavity is arranged in the rotating plate, the hydraulic cavity is in sliding connection with a hydraulic plate, a power storage cavity is arranged in the rotating plate, the hydraulic plate is fixedly connected with a power storage rod of which the other end is positioned in the power storage cavity, the power storage rod is fixedly connected with a power storage traction plate, the rotating plate is fixedly connected with the limiting plate, two symmetrical starting cavities are arranged in the front end wall and the rear end wall of the hydraulic cavity, a starting plate is in sliding connection with the starting cavity, the starting plate is connected with the starting cavity and is provided with a horizontal spring, the starting plate is fixedly connected with a supporting rod of which the other end is positioned in the power storage cavity, and the starting plate is fixedly connected with a traction rope of which the other end is fixedly connected with the sliding plate, the power storage traction plate is characterized in that two symmetrical power storage power cavities are formed in the front end and the rear end of the power storage traction plate, the lower end wall of each power storage power cavity is connected with a reversing wheel in a rotating mode, the lower end wall of each power storage power cavity is fixedly connected with a power motor at the rear side, each power motor is connected with a power shaft in a power mode, the lower end wall of each power storage power cavity at the front side is connected with the power shaft in a rotating mode, the power shafts are fixedly connected with fixed wheels, and one end of each elastic rope is connected with the fixed wheels in a backward fixed mode through the reversing wheel in a rotating mode.

Further, first angle guiding mechanism includes the screw thread axle that control motor power is connected, the screw thread axle lower extreme rotate connect in end wall under the screw thread chamber, sliding connection has threaded connection in the screw thread intracavity the thread plate of screw thread axle, screw thread chamber upper end and lower extreme respectively with two lift chamber UNICOM, sliding connection has the lifter plate in the lift intracavity, lifter plate fixedly connected with lower extreme runs through the lifter of casing, the lifter is articulated to be equipped with places the board.

Furthermore, an oil tank is arranged in the rotating plate, and a hydraulic pump is arranged at the position where the right end of the oil tank is communicated with the hydraulic cavity and the communication position of the right end of the oil tank is communicated with the hydraulic cavity.

Compared with the prior art, the invention has the following beneficial effects: the tennis training device is provided with the second angle adjusting mechanism and the first angle adjusting mechanism, so that the function of adjusting the vertical direction angle of the shell is completed through the lifting of the two placing plates arranged in the first angle adjusting mechanism, the adjustment of the vertical direction angle of tennis is completed, the adjustment of the horizontal direction angle of the tennis is realized through the transmitter which is arranged in the second angle adjusting mechanism and can rotate horizontally, and the effect of tennis training is ensured;

the training personnel can be controlled remotely through the arranged voice recognizer without approaching to adjust, time and energy are saved, the training effect is good, the hitting force can be adjusted, the training solidification caused by hitting balls with the same force is avoided, and the training is more effective.Drawings

FIG. 1 is a schematic diagram of the overall structure of an intelligent tennis ball launcher of the present invention;

FIG. 2 is a schematic top cross-sectional view of the tuning chamber of FIG. 1 in accordance with the present invention;

FIG. 3 is a schematic top cross-sectional view of the rotary plate of FIG. 1 in accordance with the present invention;

FIG. 4 is an enlarged partial schematic view of FIG. 1 of the present invention;

FIG. 5 is a schematic top cross-sectional view of the transport chamber of FIG. 4 in accordance with the present invention;

fig. 6 is an enlarged view of a portion of fig. 2 of the present invention.

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. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention:

referring to fig. 1-6, an intelligent tennis ball launcher according to an embodiment of the present invention includes a housing 10, an adjustment cavity 17 is disposed in the housing 10, a left end of the adjustment cavity 17 is open, a control cavity 11 is disposed in a lower end wall of the adjustment cavity 17, the control cavity 11 is communicated with the adjustment cavity 17, a threaded cavity 39 is disposed in a lower end wall of the control cavity 11, two lifting cavities 35 that are bilaterally symmetric are disposed in a right end wall of the threaded cavity 39, a transport cavity 50 is disposed in an upper end wall of the adjustment cavity 17, a limiting cavity 51 is disposed in a rear end wall of the transport cavity 50, an inlet arc 16 is fixedly connected to an upper end surface of the housing 10, the inlet arc 16 is communicated with the transport cavity 50, a connecting plate 36 is fixedly connected to a lower end surface of the housing 10, a hinge shaft 34 is disposed in the connecting plate 36, the hinge shaft 34 is rotatably connected to a base capable of driving the housing 10 to move, a first angle adjusting mechanism 70 is arranged on the lower side of the control cavity 11, the first angle adjusting mechanism 70 can drive the casing 10 to rotate around the hinge shaft 34, so as to adjust the angle of the vertical direction of the batting, a second angle adjusting mechanism 71 is arranged in the control cavity 11 and the adjusting cavity 17, and the second angle adjusting mechanism 71 can adjust the angle of the horizontal direction of the batting;

a voice recognizer 67 is arranged in the upper end of the control cavity 11, the voice recognizer 67 can recognize voice commands, a transmitting mechanism 72 is arranged in the casing 10, the transmitting mechanism 72 comprises a ball placing mechanism 73, a transmitter 13 is arranged in the adjusting cavity 17, a transmitting cavity 14 is arranged in the transmitter 13, a limiting plate 25 is arranged in the control cavity 11, a limiting cavity 23 is arranged in the limiting plate 25, two sliding cavities 64 which are symmetrical front and back are arranged in the front end wall and the back end wall of the limiting cavity 23, a sliding plate 63 is connected in the sliding cavity 64 in a sliding manner, the sliding plate 63 is fixedly connected with a sliding baffle 61 of which the other end can enter the limiting cavity 23, a limiting spring 60 is arranged between the sliding plate 63 and the sliding cavity 64, a transmitting block 18 is connected in the transmitting cavity 14 in a sliding manner, and a return spring 20 is arranged between the transmitting block 18 and the transmitting cavity 14, the launching block 18 is fixedly connected with a connecting rod 21, the other end of the connecting rod 21 is located in the adjusting cavity 17, the connecting rod 21 is fixedly connected with a middle block 62, the middle block 62 can enter the limiting cavity 23, the limiting triangular cone 24 is fixedly connected with the middle block 62, an elastic rope 65 is arranged at the right end of the connecting rod 21, the elastic rope 65 can be tensioned to drive the connecting rod 21 to move, accordingly, tennis balls are driven to be shot out through the launching block 18, the sliding baffle 61 can limit the movement of the limiting triangular cone 24, accordingly, the connecting rod 21 is limited to move, and accordingly, the elastic rope 65 can be tensioned to store energy.

Illustratively, the ball placing mechanism 73 includes a limiting motor 52 fixedly connected to the rear end wall of the limiting cavity 51, the limiting motor 52 is power-connected to a limiting shaft 53, the limiting shaft 53 is fixedly connected to a limiting link 54, the other end of the limiting link 54 is located in the transportation cavity 50 and is fixedly connected to an arc baffle 46, the transportation cavity 50 is fixedly connected to a baffle 48, the left end surface of the baffle 48 is fixedly connected to a sensor 47, the sensor 47 can sense the contact of tennis balls, the baffle 48 can permeate air, an air pump 49 is arranged in the transportation cavity 50, the air pump 49 is communicated with the outside, the transportation cavity 50 is communicated with the launching cavity 14 through a transportation pipeline 15 arranged in the housing 10, tennis balls can slide in the transportation pipeline 15, and the sensor 47 can control the air pump 49 and the limiting motor 52, air pump 49 is activated to draw air in, and a tennis ball in inlet arc 16 is moved to the left of baffle 48 and contacts sensor 47 because the arc baffle 46 blocks the communication between the delivery conduit 15 and the delivery chamber 50.

Illustratively, the second angle adjusting mechanism 71 includes a control motor 12 fixedly connected to the lower end wall of the control chamber 11, the control motor 12 is power-connected to a rotating shaft 19 fixedly connected to the lower end surface of the transmitter 13, the rotating shaft 19 is fixedly connected to a rotating plate 27, a hydraulic chamber 29 is provided in the rotating plate 27, the hydraulic chamber 29 is slidably connected to a hydraulic plate 30, a power storage chamber 31 is provided in the rotating plate 27, the hydraulic plate 30 is fixedly connected to a power storage rod 22 having the other end located in the power storage chamber 31, the power storage rod 22 is fixedly connected to a power storage traction plate 26, the rotating plate 27 is fixedly connected to the limiting plate 25, two symmetrical starting chambers 42 are provided in the front and rear end walls of the hydraulic chamber 29, a starting plate 45 is slidably connected to the starting chambers 42, the starting plate 45 is connected to the starting chambers 42 and provided with a horizontal spring 41, the starting plate 45 is fixedly connected with a resisting rod 43 with the other end positioned in the power storage cavity 31, the starting plate 45 is fixedly connected with a traction rope 44 with the other end fixedly connected with the sliding plate 63, the front end and the rear end of the power storage traction plate 26 are provided with two symmetrical power storage power cavities 57, the lower end wall of each power storage power cavity 57 is rotatably connected with a reversing wheel 58, the lower end wall of each power storage power cavity 57 at the rear side is fixedly connected with a force motor 55, the force motor 55 is in power connection with a force shaft 56, the lower end wall of each power storage power cavity 57 at the front side is rotatably connected with the force shaft 56, the force shaft 56 is fixedly connected with a fixed wheel 66, one end of each elastic rope 65 is fixedly connected with the fixed wheel 66 after being reversed by the reversing wheel 58, and the traction rope 44 is pulled when the power storage traction plate 26 moves leftwards to contact and pushes the resisting rod 43 to move leftwards to enter the starting cavity 42, thereby driving the sliding plate 63 and the sliding plate 63 to move away from each other, and at this time, the sliding baffle 61 no longer blocks the movement of the limiting triangular pyramid 24.

Illustratively, the first angle adjusting mechanism 70 includes a threaded shaft 38 that is connected with the control motor 12 through power, the lower end of the threaded shaft 38 is rotatably connected to the lower end wall of the threaded cavity 39, a threaded plate 40 that is connected with the threaded shaft 38 through a thread is slidably connected in the threaded cavity 39, the upper end and the lower end of the threaded cavity 39 are respectively communicated with the two lifting cavities 35, a lifting plate 32 is slidably connected in the lifting cavity 35, the lower end of the lifting plate 32 is fixedly connected with a lifting rod 33 that penetrates through the casing 10, and the lifting rod 33 is hinged with a placing plate 37.

Illustratively, hydraulic oil is arranged in the hydraulic cavity 29 and the threaded cavity 39, an oil tank 69 is arranged in the rotating plate 27, a hydraulic pump 68 is arranged at the position where the right end of the oil tank 69 is communicated with the hydraulic cavity 29, and hydraulic oil is arranged in the oil tank 69.

Illustratively, the speech recognizer 67 is capable of activating the control motor 12, the air pump 49, the oil tank 69, and the force motor 55.

Illustratively, different boresight plates can be loaded into the launching chamber 14 to allow different rotations of a tennis ball as it is launched.

The invention discloses an intelligent tennis emitter, which comprises the following working procedures:

in the initial state, the launcher 13 is in the middle of the adjustment chamber 17, the screw plate 40 is in the middle of the screw chamber 39, the two placement plates 37 are at the same height, the hydraulic plate 30 is at the rightmost side, and a plurality of tennis balls are placed in the inlet arc 16.

When tennis training is carried out and the angle of the vertical direction of serve needs to be adjusted, a voice instruction is manually issued, the voice recognizer 67 receives the voice instruction, the control motor 12 is started to output power, the threaded shaft 38 is driven to rotate, the threaded plate 40 is driven to lift, hydraulic oil in the two lifting cavities 35 is respectively sucked out and discharged, the lifting rod 33 and the placing plate 37 in the lifting cavity 35, which are sucked out, move upwards, the lifting rod 33 and the placing plate 37 which are discharged into the lifting cavity 35 of the hydraulic oil move downwards, and the hinged shaft 34 is rotatably connected to the base, so that the shell 10 rotates around the hinged shaft 34, the angle of the shell 10 is adjusted, and the angle of the vertical direction of serve is adjusted;

when the angle of the horizontal direction of serve needs to be adjusted, a voice command is manually sent, the voice recognizer 67 receives the command, so that the control motor 12 is started to output power, the rotating shaft 19 is driven to rotate, the emitter 13 and the rotating plate 27 are driven to rotate, and the emitter 13 rotates to finish adjusting the angle of the horizontal direction of serve as tennis is sent out from the opening of the emission cavity 14 in the emitter 13;

when the serve power is required to be adjusted, a voice command is given manually, the voice recognizer 67 receives the command and starts the force motor 55 to output power, so that the force shaft 56 and the fixed wheel 66 on the rear side are driven to rotate, the elastic rope 65 is tensioned or loosened, and the adjustment of the serve power is finished;

when serving, the voice commands the voice recognizer 67 to start the air pump 49 to suck air, the tennis ball moves to the left side of the baffle 48 and contacts the sensor 47, the sensor 47 is contacted to start the limiting motor 52 to output power, so as to drive the limiting shaft 53 and the limiting connecting rod 54 to rotate a quarter of a circle, so as to drive the arc baffle 46 to rotate a quarter of a circle, at this time, the communication part between the transportation cavity 50 and the inlet arc 16 is blocked, then the sensor 47 starts the air pump 49 to exhaust air into the transportation cavity 50, because the communication part between the transportation cavity 50 and the inlet arc 16 is blocked, the tennis ball is driven by air to enter the launching cavity 14 through the transportation pipeline 15, then the sensor 47 closes the air pump 49 to start the limiting motor 52 to reset, then the hydraulic pump 68 starts to suck hydraulic oil in the hydraulic cavity 29 into the oil tank 69, so as to drive the hydraulic plate 30 and the power accumulating rod 22 to move to the left, therefore, the power storage traction plate 26 is driven to move leftwards, the sliding baffle 61 blocks the limiting triangular cone 24 to move, the connecting rod 21 is not necessary when the power storage traction plate 26 moves leftwards, the elastic rope 65 is tensioned, and when the power storage traction plate 26 moves leftwards to contact and push the resisting rod 43 to move leftwards to enter the starting cavity 42, the sliding baffle 61 does not block the limiting triangular cone 24 to move any more, and under the elastic action of the elastic rope 65, the limiting triangular cone 24, the middle block 62, the connecting rod 21 and the launching block 18 move leftwards quickly, so that tennis balls in the launching cavity 14 are hit out, and tennis ball launching is completed.

The invention has the beneficial effects that: the tennis training device is provided with the second angle adjusting mechanism and the first angle adjusting mechanism, so that the function of adjusting the vertical direction angle of the shell is completed through the lifting of the two placing plates arranged in the first angle adjusting mechanism, the adjustment of the vertical direction angle of tennis is completed, the adjustment of the horizontal direction angle of the tennis is realized through the transmitter which is arranged in the second angle adjusting mechanism and can rotate horizontally, and the effect of tennis training is ensured;

the training personnel can be controlled remotely through the arranged voice recognizer without approaching to adjust, time and energy are saved, the training effect is good, the hitting force can be adjusted, the training solidification caused by hitting balls with the same force is avoided, and the training is more effective.

It will be apparent to those skilled in the art that various modifications may be made to the above embodiments without departing from the general spirit and concept of the invention. All falling within the scope of protection of the present invention. The protection scheme of the invention is subject to the appended claims.