CN116271765A

CN116271765A - Tennis training device

Info

Publication number: CN116271765A
Application number: CN202211089558.2A
Authority: CN
Inventors: 彭峻
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2023-06-23

Abstract

The application relates to tennis training device, include: a ball blocking assembly; the ball collecting assembly is arranged adjacent to the ball blocking assembly and is provided with a ball collecting opening; and the ball feeding assembly is positioned on one side of the ball receiving assembly, which is far away from the ball blocking assembly, and the ball receiving assembly conveys the collected tennis balls to the ball feeding assembly, and the ball feeding assembly is provided with a ball outlet. The technical scheme of the application effectively solves the problem that a larger field is needed during tennis training in the prior art.

Description

Tennis training device

Technical Field

The application relates to the technical field of tennis training devices, in particular to a tennis training device.

Background

Tennis is popular with more and more people as a sports with strong fitness and competitive properties. Because tennis requires high place, the place needs to be big, and the construction and maintenance costs are high. In general, the tennis court is built in places and in strength which are not so large in the junior and high school, so that the training and popularization of tennis are under the current situation of less courts and high cost. So that students can not reach tennis all the time, and the student's sports literacy is also a deficiency for improving the student's sports literacy.

Disclosure of Invention

The application provides a tennis trainer for need the problem in great place when solving the tennis training among the prior art.

To solve the above problems, the present application provides a tennis training device, including: a ball blocking assembly; the ball collecting assembly is arranged adjacent to the ball blocking assembly and is provided with a ball collecting opening; and the ball feeding assembly is positioned on one side of the ball receiving assembly, which is far away from the ball blocking assembly, and the ball receiving assembly conveys the collected tennis balls to the ball feeding assembly, and the ball feeding assembly is provided with a ball outlet.

Further, the ball collecting assembly comprises a ball sliding groove, the ball sliding groove comprises a bottom plate, the bottom plate of the ball sliding groove is obliquely arranged, a ball outlet hole is formed in a position corresponding to the lower part of the bottom plate of the ball sliding groove, and the diameter of the ball outlet hole is larger than the outer diameter of the tennis ball.

Further, the yo-yo groove comprises side walls, and the bottom plate of the yo-yo groove is gradually inclined along the width direction of the ball collecting assembly, and the ball outlet is positioned at the bottom of the yo-yo groove.

Further, along the plane vertical to the bottom plate of the yo-yo groove, the cross section of the bottom plate of the yo-yo groove is in a circular arc shape, and the inner diameter of the circular arc shape is matched with the outer diameter of the tennis ball.

Further, the ball receiving assembly further comprises: the ball collecting box body comprises a front side plate, a rear side plate, a left side plate, a right side plate and an inclined bottom plate, the front side edge of the inclined bottom plate of the ball collecting box body is connected with the lower edge of the front side plate of the ball collecting box body, the rear side edge of the inclined bottom plate of the ball collecting box body is connected with the upper edge of the front side plate of the ball sliding groove, the front side edge of the inclined bottom plate is gradually lowered to the rear side edge of the inclined bottom plate, or the ball sliding groove is located in the middle of the front side plate and the rear side plate, and the inclined bottom plate is inclined from front side to rear side to the middle.

Further, the ball collecting assembly further comprises a ball inclined plate, the upper side edge of the ball inclined plate is adjacent to the upper edge of the ball collecting box body, and the lower side edge of the ball inclined plate is in contact with the ground.

Further, the upper side of the ball swash plate is pivotally connected to the ball receiving box.

Further, the ball collecting assembly further comprises a tennis lifting structure, the tennis lifting structure comprises a transmission belt, a driving wheel and a driven wheel, the transmission belt is in a closed annular shape, and the driving wheel and the driven wheel are respectively positioned at two ends of the transmission belt.

Further, the conveyor belt further comprises an inner conveyor belt, a housing and a plurality of lifting partition plates, wherein the lifting partition plates are connected to the inner conveyor belt at intervals, and the housing covers the outer side of the circumference of the inner conveyor belt and the lifting partition plates.

Further, the gap between adjacent lifting baffles is greater than the diameter of one tennis ball and less than the diameter of two tennis balls.

Further, the method comprises the steps of: the first pipe body is horizontally and obliquely arranged, the first end of the first pipe body is higher than the second end of the first pipe body, and the first end of the first pipe body is provided with a ball inlet; the second body, the vertical setting of second body, the first end and the first body of second body are linked together, and the second end of second body has the ball mouth.

Further, the extreme end of the second pipe body is a short arc bent pipe so as to simulate the ball throwing track of a coach hand, so that a tennis ball falls on the ground and bounces to be hit by a trainer; and/or the extreme end of the second pipe body is vertically downward.

Further, two second pipes are provided, and the two second pipes are respectively arranged on the left side of the exerciser and the right side of the exerciser.

Further, the second pipe body is of a telescopic structure.

Further, the second tube body comprises a plurality of second tube body sections, adjacent second tube body sections being telescopically connected.

Further, the ball feeding assembly further comprises a damping structure, and the damping structure is arranged in the second pipe body.

Further, the damping structure is disposed within the lowermost second pipe body section, the damping structure comprising:

the tennis ball pressing device comprises a plurality of spring pieces, wherein each spring piece is of a curve structure, the minimum diameter between the spring pieces is smaller than the outer diameter of the tennis ball, the tennis ball is pressed against the spring pieces, and the tennis ball can pass through a through hole between the spring pieces; or the elastic net piece is provided with a via hole in the middle, the inner diameter of the via hole is smaller than the outer diameter of the tennis ball, the tennis ball is propped against the via hole, and the tennis ball can pass through the via hole.

Further, the first pipe body comprises a first horizontal pipe section and a second horizontal pipe section, the first end of the first horizontal pipe section is a ball inlet, the second end of the first horizontal pipe section is communicated with the first end of the second horizontal pipe section, the first horizontal pipe section extends from the ball blocking net to the exerciser, the second horizontal pipe section extends along the width direction of the ball blocking net, and the second pipe body is arranged below the second horizontal pipe section.

Further, the ball feeding assembly further comprises a ball feeding turntable structure, the ball feeding turntable is arranged between the first horizontal section and the second horizontal section, the ball feeding turntable structure comprises a turntable motor and a turntable, the turntable motor is coaxially connected with the turntable, the turntable comprises a first turntable side plate, a second turntable side plate and a plurality of turntable partition plates, each turntable partition plate is radially arranged between the first turntable side plate and the second turntable side plate, tennis ball accommodating spaces are formed between adjacent turntable partition plates, and inlets of the tennis ball accommodating spaces are located on the side surfaces of the turntable.

Further, the second body is a plurality of, and a plurality of second body settings are on the second horizontal tube section, and the ball subassembly still includes falling ball switching structure, falls the ball switching structure setting on the second body.

Further, the falling ball switching structure comprises a switching executing mechanism, a first communicating pipe and a second communicating pipe, wherein the first communicating pipe and the second communicating pipe are connected with the switching executing mechanism, the first communicating pipe is a straight pipe section, the second communicating pipe is a right-angle pipe section, the second horizontal pipe section is provided with a fracture section, the fracture section is positioned right above a second pipe body close to a first end of the second horizontal pipe section, and the switching executing mechanism drives the first communicating pipe or the second communicating pipe to be positioned at the fracture section.

Further, the ball blocking assembly comprises a ball blocking curtain which is arranged on one side of the ball receiving assembly away from the ball outlet of the ball feeding assembly.

Further, the tennis training device further comprises a frame assembly, wherein the frame assembly comprises a frame and a side curtain, the ball blocking curtain is fixed on the frame assembly, and the side curtain is arranged on the side face of the frame.

Further, tennis trainer still includes control assembly, and control assembly includes control main part and information acquisition structure, and control main part is connected with information acquisition structure electricity.

Further, the control assembly further comprises a projection structure, the projection structure is electrically connected with the control main body, and the projection structure projects action information of the practitioners to the ball screen.

Further, the control assembly further comprises a signal transmitter and a signal receiver, both of which are electrically connected with the control body.

Compared with the prior art, the technical scheme provided by the application has the following advantages:

after the tennis is hit by a practicer, the tennis ball falls into the ball collecting assembly through the ball blocking assembly, directly falls into the ball collecting assembly or enters the ball collecting assembly through other modes, the collected tennis ball is conveyed to the ball feeding assembly through the ball collecting assembly, the ball is fed to a ball outlet of the ball feeding assembly, and the practicer trains the tennis ball output by the ball feeding assembly. Therefore, the training of tennis can be realized without the tennis court of standard size, and the action of picking up the tennis and the like is not needed by the training person due to the cooperation of the ball collecting assembly and the ball feeding assembly, so that the efficiency of training the tennis is greatly improved, and the experience of training the tennis is greatly improved. The technical scheme of the application effectively solves the problem that a larger field is needed during tennis training in the prior art.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a schematic diagram showing the overall structure of a tennis training device according to the present application;

FIG. 2 shows a schematic view of the ball feeding assembly of the tennis training device of FIG. 1;

FIG. 3 is a schematic view showing the mating structure of a ball receiving assembly and a ball feeding assembly of the tennis training device of FIG. 1;

FIG. 4 shows a schematic structural view of several aspects of a ball feeding assembly of the tennis training device of FIG. 1;

FIG. 5 shows a schematic view of the ball receiving assembly of the tennis training device of FIG. 1;

FIG. 6 illustrates a partial schematic view of the ball receiving assembly of FIG. 5;

FIG. 7 shows a schematic view of the structure of a ball feeding dial of the tennis training device of FIG. 1;

FIG. 8 is a schematic view showing the internal structure of the ball feed turntable of FIG. 7;

FIG. 9 shows a schematic view of a damping structure of the tennis training device of FIG. 1;

fig. 10 shows a schematic view of another damping structure of the tennis training device of fig. 1.

Wherein the above figures include the following reference numerals:

1. an exerciser; 2. tennis racket; 3.1, front door frame; 3.2, a rear door frame; 3.3, a waterproof top plate; 3.4, side curtains; 4. a rear end ball blocking screen and a projection screen; 5. a power distribution control box; 6. a manual operator; 7. a camera; 8. an image projection device;

9. a site server; 10. a network data transmission unit; 11. a cloud platform network server; 12. a data sharing receiving terminal; 13. a ball receiving assembly; 13.5, a ball sloping plate; 14. tennis lifting structure; 14.1, lifting the partition plate; 15. a first horizontal pipe section; 16. a ball feeding turntable structure; 16.1, a turntable motor; 16.2, a turntable with a ball containing notch; 16.3, a ball accommodating notch; 16.4, an outer cylinder; 16.5, the outer cylinder enters the ball mouth; 16.6, a ball outlet of the outer cylinder; 17. a ball falling switching structure 18 and a second horizontal pipe section; 19. a second tube body; 20. a damping structure; 21. an elastic net; 22. a via hole; 23. a spring piece.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.

As shown in fig. 1 to 10, the tennis training device of the present embodiment includes: the ball collecting assembly is arranged adjacent to the ball blocking assembly and is provided with a ball collecting opening. The ball feeding assembly is located on one side of the ball receiving assembly, which is far away from the ball blocking assembly, and the ball receiving assembly conveys the collected tennis balls to the ball feeding assembly, and the ball feeding assembly is provided with a ball outlet.

According to the technical scheme of the embodiment, after the trainer 1 hits tennis balls, the tennis balls fall into the ball collecting assembly through the ball blocking assembly (the ball blocking screen at the rear end and the projection screen 4), directly fall into the ball collecting assembly or enter the ball collecting assembly through other modes, the collected tennis balls are conveyed to the ball feeding assembly through the ball collecting assembly, the ball feeding is carried out at the ball outlet of the ball feeding assembly, and the trainer carries out batting training on the tennis balls (after the tennis balls are sprung up on the ground) output by the ball feeding assembly. Therefore, the training of tennis can be realized without the tennis court of standard size, and the action of picking up the tennis and the like is not needed by the training person due to the cooperation of the ball collecting assembly and the ball feeding assembly, so that the efficiency of training the tennis is greatly improved, and the experience of training the tennis is greatly improved. The technical scheme of the application effectively solves the problem that a larger field is needed during tennis training in the prior art.

The tennis ball feeding assembly comprises: a first tube and a second tube 19. The first body level slope sets up, and the first end of first body is higher than the second end of first body, and the first end of first body has the vertical setting of ball inlet second body 19, and the first end of second body 19 is linked together with first body, and the second end of second body 19 has the ball outlet. According to the technical scheme of the embodiment, the first pipe body is horizontally inclined, so that tennis balls roll to the second pipe body 19 from the first pipe body under the action of gravity and then fall from the ball outlet of the second pipe body 19, and therefore the ball can be given by a partner or the ball can be given by the partner. The structure can greatly improve the experience of tennis practitioners in practice of playing tennis.

The first pipe body comprises a first horizontal pipe section 15 ball sliding pipe and a second horizontal pipe section 18 ball falling chute pipe, and the second pipe body 19 is a ball falling pipe. The diameter of the first pipe body and the diameter of the second pipe body 19 are larger than that of a single tennis ball and smaller than that of two tennis balls, and the ball outlet of the second pipe body 19 faces the ground vertically.

In the technical solution of the present embodiment, the second pipe 19 is of a telescopic structure. The second pipe 19 is of a telescopic structure, so that the landing height of the tennis ball can be adjusted according to the needs, for example, the height of the exerciser 1 can be adjusted according to the needs, or the difference between adults and children can be adjusted.

In the technical solution of the present embodiment, the second pipe body 19 includes a plurality of second pipe body sections, and adjacent second pipe body sections are connected telescopically. The structure has the advantages of low processing cost and convenient arrangement. Taking the second pipe body section as a three-section example for description, the uppermost second pipe body section is larger than the middle second pipe body section, and the middle second pipe body section is larger than the lower second pipe body section, namely the three second pipe body sections are of nested structures, and the adjacent second pipe body sections are connected in a telescopic matching way through a sleeve structure, so that the prior art is mature and is not repeated herein.

In the technical solution of the present embodiment, the ball feeding assembly further includes a damping structure 20, and the damping structure 20 is disposed in the second tube 19. The damping structure 20 effectively ensures that the tennis ball can bounce to a reasonable height after landing, and is convenient for the practitioners 1 to hit. It should be noted that, the damping structure 20 is matched with the telescopic structure of the second pipe body 10, so that the practitioner 1 can control the falling speed and the bouncing height of the tennis ball.

In the technical solution of the present embodiment, the damping structure 20 is disposed in the second pipe section at the lowest part, and the damping structure 20 includes: a plurality of leaf springs 23. Each spring piece 23 is of a curve structure, the minimum diameter between each spring piece 23 is smaller than the outer diameter of the tennis ball, the tennis ball abuts against the spring pieces 23, and the tennis ball can pass through the through holes between each spring piece 23. The structure has the advantages of low processing cost, convenient arrangement and easy disassembly and assembly. As a further embodiment the damping structure 20 may be a resilient net 21. The middle of the elastic net piece 21 is provided with a through hole, the inner diameter of the through hole 22 is smaller than the outer diameter of the tennis ball, the tennis ball is pressed against the through hole 22, and the tennis ball can pass through the through hole 22. The spring piece 23 and the elastic net piece 21 can reduce the falling speed of tennis balls.

In the technical solution of this embodiment, the first pipe body includes a first horizontal pipe section 15 and a second horizontal pipe section 18, a first end of the first horizontal pipe section 15 is a ball inlet, a second end of the first horizontal pipe section 15 is communicated with a first end of the second horizontal pipe section 18, the first horizontal pipe section 15 extends from the ball blocking net to the exerciser, the second horizontal pipe section 18 extends along the width direction of the ball blocking net, and the second pipe body 19 is disposed on the second horizontal pipe section 18. The combination of the first horizontal pipe section 15 and the second horizontal pipe section 18 is more convenient for the practice of the practicer 1 and further facilitates the placement of the falling balls. For example, when a plurality of practitioners 1 do exercises, two second pipe bodies 19 may be provided on the second horizontal pipe section 18 according to the length of the second horizontal pipe section 18, so that the practitioners can practice the left and right putting strokes, respectively.

The extreme end of the second pipe body is a short arc bent pipe so as to simulate the ball throwing track of a training hand, and a practicer can hit balls after the tennis balls are bounced up in a falling mode. Or the extreme end of the second pipe body is vertically downwards so as to facilitate the practice of free falling body to bounce for batting. The end of the second pipe body is also provided with a replaceable short arc bent pipe and a short pipe facing vertically downwards.

In the technical scheme of this embodiment, the second body is equipped with two, and two second body are on the left side of practitioner and the right side of practitioner respectively. Thus, the exerciser can exercise left and right hands.

In the technical scheme of this embodiment, for ball subassembly still including giving ball carousel structure 16, for ball carousel setting between first horizontal segment and second horizontal segment, for ball carousel structure 16 includes carousel motor and carousel, the carousel motor links to each other with the carousel is coaxial, the carousel includes first carousel curb plate, second carousel curb plate and a plurality of carousel baffle, each carousel baffle is radial setting between first carousel curb plate and second carousel curb plate, have tennis accommodation space between the adjacent carousel baffle, tennis accommodation space's import is located the side of carousel. By providing the ball feed turntable structure 16, the regularity of the feed is ensured. The ball feeding turntable structure 16 comprises a turntable motor 16.1, a turntable 16.2 with a ball containing notch, a ball containing notch 16.3, an outer barrel 16.4, an outer barrel ball inlet 16.5 and an outer barrel ball outlet 16.6, wherein the side wall of the turntable 16.2 with the ball containing notch is provided with a port, the ball inlet 16.5 of the outer barrel is used for ball feeding, and the ball outlet 16.6 of the outer barrel is used for ball discharging.

In the technical solution of this embodiment, the second pipe body 19 is multiple, the multiple second pipe bodies 19 are disposed on the second horizontal pipe section 18, the ball feeding assembly further includes a ball falling switching structure 17, and the ball falling switching structure 17 is disposed on the second pipe body 19. The ball drop switching structure 17 is arranged to select the ball outlet of the second pipe 19 to be used for ball output.

In the technical solution of this embodiment, the ball falling switching structure 17 includes a switching executing mechanism, a first communicating pipe and a second communicating pipe, where the first communicating pipe and the second communicating pipe are connected to the switching executing mechanism, the first communicating pipe is a straight pipe section, the second communicating pipe is a right-angle pipe section, the second horizontal pipe section 18 has a fracture section, the fracture section is located right above the second pipe body 19 near the first end of the second horizontal pipe section 18, and the switching executing mechanism drives the first communicating pipe or the second communicating pipe to be in the fracture section. The first communicating pipe ensures that tennis balls can smoothly reach the second pipe body 19 at the far end, and the second communicating pipe ensures that tennis balls cannot reach the second pipe body 19 at the far end and only can reach the second pipe body 19 at the lower part of the corresponding second communicating pipe. The switching actuator may be of an electric type or a pneumatic type.

The exerciser 1 of this embodiment holds the tennis racket 2 to hit the ball, and the front door frame 3.1, the rear door frame 3.2, the waterproof top plate 3.3, the distribution control box 5, the camera 7, the image projection device 8 and the like form a tennis training device together. The embodiment can not only practice the left and right side ball striking, but also practice the ball-serving technology of self-throwing. When the self-throwing ball serving is practiced, a tennis basket is placed under the ball falling pipe to catch the transmitted and dropped tennis balls, and a practitioner throws and fires the tennis balls from the tennis basket.

The ball receiving assembly 13 of the present embodiment includes: yo-yo groove 13.4. The yo-yo groove 13.4 comprises a bottom plate, the bottom plate of the yo-yo groove 13.4 is obliquely arranged, and a ball outlet hole is arranged at a position corresponding to the lower part of the bottom plate of the yo-yo groove 13.4, and the diameter of the ball outlet hole is larger than the outer diameter of the tennis ball.

According to the technical scheme, the ball collecting assembly 13 comprises a ball collecting groove, the ball collecting groove 13.4 is of a structure capable of collecting tennis balls, the bottom plate of the ball collecting groove 13.4 is obliquely arranged to enable the tennis balls to roll from a higher position to a lower position, ball outlet holes are formed in the lower position, the fact that the tennis balls can move to the next position through the ball outlet holes is guaranteed, and therefore labor intensity of manual ball picking and carrying is greatly reduced. The technical scheme of this application has solved the tennis among the prior art effectively and has been lower, the problem that wastes time and energy of efficiency when picking up.

The middle high end and the two ends of the bottom plate of the yo-yo groove 13.4 are gradually inclined, so that two yo-yo holes can be formed, and the balls can be discharged from the two ends after being received. In the technical scheme of the application, the bottom plate of the yo-yo groove 13.4 is gradually inclined from the first side to the second side of the bottom plate of the yo-yo groove 13.4 in the left-right direction of the batting of a human body. The diameter of the ball outlet hole is slightly larger than that of the tennis ball, and the wall surface of the ball outlet hole is in a smooth arc shape, so that the tennis ball can be conveniently guided, and the condition that a plurality of tennis balls pass through the ball outlet hole at the same time is avoided.

In the solution of this embodiment, the yo-yo groove 13.4 includes a side wall, and the bottom plate of the yo-yo groove 13.4 is disposed gradually and obliquely along the width direction of the ball collecting assembly, and the ball outlet is located at the side wall of the yo-yo groove 13.4. The structure has low processing cost and convenient operation. The width of the bottom plate of the yo-yo groove 13.4 is larger than the diameter of one tennis ball and smaller than the diameters of two tennis balls. This avoids two tennis balls passing through the ball outlet holes at the same time.

Not shown in the technical solution of this embodiment, the cross section of the bottom plate of the yo-yo groove 13.4 is circular along a plane perpendicular to the bottom plate of the yo-yo groove 13.4, and the inner diameter of the circular arc is adapted to the outer diameter of the tennis ball. The above structure further ensures that tennis balls roll down along a predetermined track. The cross section is perpendicular to the direction of extension of the yo-yo groove 13.4.

In the technical solution of this embodiment, the ball receiving assembly further includes: and a ball collecting box body. The ball collecting box body comprises a front side plate 13.1, a rear side plate 13.2, a left side plate, a right side plate and an inclined bottom plate 13.3, the front side edge of the inclined bottom plate 13.3 of the ball collecting box body is connected with the lower edge of the front side plate 13.1 of the ball collecting box body, the rear side edge of the inclined bottom plate 13.3 of the ball collecting box body is connected with the upper edge of the front side plate 13.1 of the ball sliding groove 13.4, and the front side edge of the inclined bottom plate 13.3 is gradually lowered to the rear side edge of the inclined bottom plate 13.3. The structure enlarges the area for receiving tennis balls and ensures that more tennis balls can be received as much as possible. Tennis balls falling into the ball receiving box body roll from high to low under the action of gravity, so that the tennis balls roll into the ball sliding groove 13.4 along the inclined bottom plate 13.3, and the tennis balls continue to move towards the ball outlet hole under the action of gravity in the ball sliding groove 13.4. The structure has low processing cost and convenient operation. The width of the ball receiving box body is the same as the width of the side curtain 3.4 of the tennis ball.

In the technical scheme of the embodiment, the ball collecting assembly further comprises a ball inclined plate 13.5, the upper side edge of the ball inclined plate 13.5 is adjacent to the upper edge of the ball collecting box body, and the lower side edge of the ball inclined plate 13.5 is in contact with the ground. The ball picking efficiency is further improved by the arrangement of the ball sloping plate 13.5. When the force of the exerciser 1 is small, tennis falls into the area between the exerciser 1 and the ball collecting assembly 13, and the ball picking personnel pushes the tennis with external force, so that the tennis can roll into the ball collecting box body.

In the technical solution of the present embodiment, the upper side edge of the ball swash plate 13.5 is pivotally connected to the ball receiving box. The structure is convenient for folding the ball collecting assembly, so that space can be saved when the ball collecting assembly is stored and transported. Further, the ball sloping plate 13.5 is detachably connected with the ball receiving box body, so that the storage and transportation space is further saved.

In the technical scheme of this embodiment, the ball receiving assembly further includes a tennis lifting structure 14, the tennis lifting structure 14 includes a transmission belt, a driving wheel and a driven wheel, the transmission belt is in a closed annular shape, and the driving wheel and the driven wheel are respectively located at two ends of the transmission belt. The structure further reduces labor intensity and improves automation of tennis ball conveying. Tennis rolls from the ball chute 13.4 to the tennis ball lifting structure 14, and the tennis ball lifting structure 14 lifts the tennis ball, rolls down to the ball chute 15, and then enters the ball drop chute 18, and through the switching of the left-right ball drop switching structure 17, the tennis ball can enter the preset ball drop chute 19. It should be noted that the axis of the driving wheel and the axis of the driven wheel are located in the same vertical plane, i.e. the tennis lifting structure 14 is arranged vertically.

In the technical solution of this embodiment, the conveyor belt further includes an inner conveyor belt, a housing, and a plurality of lifting partitions 14.1, where the plurality of lifting partitions 14.1 are connected to the inner conveyor belt at intervals, and the housing covers the inner conveyor belt and the plurality of lifting partitions. The dribbling device with the structure has higher dribbling efficiency and is convenient to use.

In the technical solution of the present embodiment, the gap between adjacent lifting partitions 14.1 is larger than the diameter of one tennis ball and smaller than the diameters of two tennis balls. The above structure avoids the problem that a plurality of tennis balls enter between the adjacent lifting partition plates 14.1 and mutually interfere with each other in the same space.

As shown in fig. 1, in the technical solution of this embodiment, the ball blocking assembly includes a ball blocking curtain, and the ball blocking curtain is disposed on a side of the ball receiving assembly away from the ball outlet of the ball feeding assembly. The ball blocking curtain plays a role in blocking tennis balls, and in addition, a sensing element can be arranged on the ball blocking curtain to collect factors such as the batting angle, the tennis ball speed and the batting force of a practicer so as to guide the practice of the tennis balls of the practicer 1. For example, the ball blocking curtain is arranged at the middle tennis net position of the standard tennis court, so that half tennis court can be reduced. The ball blocking curtain is made of chemical fiber deformation-resistant waterproof cloth, and hooks are arranged on the ball blocking curtain to be matched with the frame.

As shown in fig. 1, in the technical solution of this embodiment, the tennis training device further includes a frame assembly, where the frame assembly includes a frame and a side curtain, and the ball blocking curtain is fixed on the frame assembly, and the side curtain is disposed on a side surface of the frame. The frame comprises a front door frame 3.1, a rear door frame 3.2, a waterproof top plate 3.3 and other structures. The ball receiving assembly and the ball feeding assembly are arranged inside the frame assembly.

As shown in fig. 1 to 4, in the technical solution of this embodiment, the tennis training device further includes a control component, where the control component includes a control main body and an information collecting structure, and the control main body is electrically connected with the information collecting structure. The setting of control unit has improved the automation of tennis trainer and intelligent level on the one hand, can also gather information such as the action of batting, batting dynamics of exerciser in addition, plays fine instruction exercise's effect to exerciser 1. The information acquisition structure includes camera 7 (RGB high definition digtal camera), and the camera sets up in the frame subassembly. The action of the practicer, the track of the tennis ball and the drop point of the tennis ball on the ball blocking curtain are collected.

As shown in fig. 1 and 3, in the technical solution of the present embodiment, the control assembly further includes a projection structure, and the projection structure 8 is electrically connected with the control main body, and the projection structure projects action information of the exerciser to the ball screen. The projection structure is arranged so that the exerciser 1 can acquire exercise motions in real time to correct bad motions.

As shown in fig. 1 to 4, in the technical solution of the present embodiment, the control assembly further includes a signal transmitter and a signal receiver, where the signal transmitter and the signal receiver are electrically connected to the control main body. The structure is beneficial to the real-time transmission of signals, and can realize the functions of teaching, playback and the like. Meanwhile, the device can effectively help primary tennis fans practice basic tennis actions, and the nonstandard actions of players can be effectively summarized through the AI scoring system, so that rapid personal skills are achieved, and the primary tennis fans can cross over a high threshold for learning the initial stage of tennis and enjoy the pleasure of tennis.

Through the above, the tennis training device comprises an enclosure structure, a ball receiving structure, a ball conveying structure, a ball feeding structure, a data acquisition structure, a power distribution control structure, a central data processing control unit, a projection structure, a network data transmission unit, a cloud platform management unit, a data sharing unit (terminal equipment and a mobile phone) and the like. The multiple systems cooperate to form an automatic ball receiving, delivering, serving and hitting practice and evaluation device.

The enclosure (frame assembly) includes a frame, a waterproof top cover, a side curtain, a front ball screen, a projection screen (the ball screen may also be considered as part of the enclosure tennis structure), and the like.

The frame is a cuboid formed by splicing square steel pipes or stainless steel square pipes with corrosion-resistant surfaces and special connecting pieces on site through bolts, and uniformly distributed hooks are welded on the upright posts and the cross bars, wherein the height is 2.5-3.5 meters, the width is 2-3 meters and the length is 5 meters. The four corners are respectively provided with a vertical rod, the lower parts of the vertical rods are fixed on the hardened ground at the selected mounting positions by expansion bolts, and a scissor-shaped diagonal bracing is respectively arranged between the two vertical rods at two sides so as to stabilize the frame from deformation. The whole ball blocking curtain is fixed and tensioned through the vertical rod and the cross rod.

The special connecting piece is a combination body formed by welding 3 (or 4) square tubes with the cross section smaller than that of the transverse vertical rod according to a specified angle. The square tubes of the connecting piece can be just inserted into the transverse and vertical rods, and small holes are formed in the same positions of the transverse and vertical rods and the connecting piece at the same time, and the connecting piece is fixedly clamped by bolts after being spliced. If a plurality of training positions are spliced together, the connecting piece at each upright rod in the middle is 4-head, the upright rods at the two ends or all upright rod connecting pieces at a single training position are 3-head, and 3 (or 4) connecting square tubes form an angle of 90O with each other and are respectively connected with the transverse rods and the upright rods in all directions.

The waterproof top cover is a transparent resin flat plate, two ends of the waterproof top cover are fixed on the cross rod by bolts, a plurality of waterproof top covers are transversely spliced, and glass cement is used for splicing seams.

The side curtain, the front ball blocking curtain and the projection screen are special chemical fiber anti-deformation waterproof cloth, and three sides (except the ground connection surface) are uniformly fixed with hanging rings which are respectively hung and tensioned with hooks on the corresponding vertical rods and the corresponding cross rods.

The ball collecting assembly consists of a tennis ball collecting tank, an inclined bottom ball rolling tank and a ball rolling inclined plate, wherein the tennis ball collecting tank is close to the front face of the rear end of the ball collecting tank, the inclined bottom ball rolling tank is arranged at the lower part of the tennis ball collecting tank, and the ball rolling inclined plate is arranged in front of the tennis ball collecting tank, and the ball collecting assembly comprises the ball rolling inclined plate, front and rear side baffles, an inclined surface bottom plate and an inclined bottom tennis ball rolling tank. The two ends of the rear baffle are connected with the connecting plate at the lower end of the rear upright post through screw threads in a fastening way, and the upper edge of the rear baffle is connected with the front ball blocking curtain through a pull ring and a hook. The distance between the front baffle and the rear baffle is 500mm, and the ball collecting groove is formed by connecting the end plate with the front and rear inclined bottom plate. The lower part of the ball receiving groove is connected with a ball rolling groove which inclines to one side left and right, and the width of the ball rolling groove is larger than the diameter of one tennis ball by 10mm. Tennis balls are beaten on the rear end ball blocking curtain, blocked from falling into the ball receiving groove below, rolled into the ball receiving groove below through the front-back inclined bottom plate, and then rolled into the ball conveying device at one end through the left-right inclined ball receiving groove.

Further, a rolling ball sloping plate is fixed on the upper edge of the baffle plate at the front side of the ball collecting groove through a hinge. During training, the ball inclined plate is tilted downwards and falls in front of the ball collecting groove, when the batting force is not enough during training, and when tennis falls on the ground in front of the rear end ball blocking net, the tennis can roll into the ball collecting groove forwards through the ball inclined plate by virtue of the residual force; or tennis balls scattered on the training field exist, and the tennis ball receiving personnel only need to lightly push the tennis balls to the direction of the tennis ball receiving groove, so that the tennis balls can roll into the tennis ball receiving groove, and the time and the labor are saved.

The ball conveying structure comprises a tennis ball lifting device (tennis ball lifting structure 14) and a chute pipe. Further, the tennis ball lifting device is a device which is vertically provided with a similar scraper conveyor, and can only accommodate one tennis ball between two adjacent partition boards, and the belt (or chain) is driven to rotate by the motor, so that the partition boards are lifted to the top continuously and enter similar chute pipes. The tennis ball lifting device can also be a device which is vertically arranged and is similar to a bucket elevator, each lifting bucket can contain a tennis ball, and the tennis ball is lifted to the top through the lifting bucket to enter a similar chute pipe. The top of the lifting device is provided with an arc-shaped supporting plate below the moving track of the partition plate or the lifting hopper, so that tennis balls poured from the partition plate or the lifting hopper are prevented from directly falling down, and the tennis balls roll into a chute pipe beside along the moving track of the lifting hopper. The lower part of the lifting device is respectively fixed with the upright rod and the ball collecting groove of the frame through bolts, and the upper end of the lifting device is fixedly connected with the cross rod of the frame through bolts and connecting pieces.

The chute pipe is a round pipe with a front low and a rear high inclined installation, the inner diameter of the chute pipe is slightly larger than the diameter of a tennis ball, and the front end and the rear end of the chute pipe are respectively fixed on the cross rod of the frame. The rear end of the ball feeding turntable is close to the ball outlet of the tennis lifting device, and the front end of the ball feeding turntable is close to the ball feeding turntable.

The ball feeding device consists of a timing ball feeding turntable, a ball falling groove pipe and a left-right ball falling switching device (ball falling switching structure 17).

The timing ball feeding rotary table (ball feeding rotary table) comprises a gear motor, a rotary table with a ball containing notch, an outer cylinder and the like. The motor and the speed reducer are outsourcing general products, the turnplate with the notch is a round turnplate, 1-4 notches are symmetrically arranged on the periphery of the turnplate, and each notch can just hold the next tennis ball. The bottom plate of the notch is inclined outwards. The outer cylinder is provided with a notch at the ball picking position and the ball discharging position respectively, and tennis balls enter the ball containing notch of the turntable from the ball inlet of the outer cylinder, and roll out from the ball outlet of the outer cylinder to enter the ball falling groove pipe when the tennis balls rotate to the ball outlet. The number of gaps on the turntable and the rotating speed are used for controlling the time interval between two adjacent tennis balls, namely the ball feeding speed. The product is designed into a plurality of gears for different practitioners to choose.

The ball falling groove pipe is fixed on the front cross rod of the frame, the inner diameter of the pipe is slightly larger than the diameter of a tennis ball, the ball inlet end of the ball falling groove pipe is 50-100mm higher than the other end, ball falling holes are respectively formed in the left ball falling point and the right ball falling point, and a ball baffle plate is arranged behind the ball falling holes.

The telescopic tube with the locking device is connected below the ball falling hole, the telescopic tube can be locked and fixed according to 3-4 different lengths, and the damping device is arranged at the bottommost end of the telescopic tube so as to eliminate the falling speed and impact of tennis balls in the telescopic tube. The damping device can be that two curved spring pieces are relatively arranged on the inner wall of the lower end of the telescopic pipe, the distance between the two spring pieces is smaller than the diameter of the tennis ball during diastole, when the tennis ball falls down from the upper surface, under the impact of the tennis ball, the spring pieces are opened, the tennis ball continuously falls down, and the two spring pieces are symmetrically arranged to ensure the stress balance of the tennis ball. Or, the damping device can also be an elastic net piece with a hole in the center, the diameter of the central hole is slightly smaller than that of the tennis ball when the central hole is normal, when the tennis ball falls from the upper surface, the central hole is expanded and enlarged under the action of impact, and the tennis ball can continuously fall, but the ball speed is very small. The damping device (damping deconstruct 0) is used for preventing the tennis ball from bouncing off the ground after freely falling from a high place, and is inconvenient for a practitioner to strike. The tennis ball is controlled to fall from a position slightly higher than the height of the human body, and practitioners with different heights can select different telescopic tube lengths.

The left and right ball falling switching devices are two sections of round tubes with the same tube diameter as the ball falling groove tube, the length is 200-400mm, one of the round tubes is a straight-through tube, no ball baffle plate and ball falling holes are arranged, the other round tube is provided with ball falling holes below, and the ball baffle plate is arranged behind the ball falling holes. The two tubes are fixed through a link mechanism, the link is connected with an actuating mechanism fixed on a front cross rod of the frame, the actuating mechanism can be of an electric type or a pneumatic type, the two tubes rotate along a certain point, two ends of rotation just enable the two tubes to be coaxially matched with the original fixed ball falling groove tube, the ball falling tube is broken, the ball falling tube is matched with any one of the two tubes after rotating in place, and tennis balls can fall on the left side or the right side of a batter.

The control component comprises a special RGB high-definition camera, a special tennis racket with an induction element and a signal line, wherein the special RGB high-definition camera, the special tennis racket with an induction element and the signal line are respectively fixed on the outer sides of the left batting point and the right batting point. The signal lines are laid along the cross bars and the vertical bars of the frame, the cameras are outsourcing products, and the special tennis racket with the induction elements is a patent product. The exerciser 1 can perform a control operation through the hand manipulator 6.

The power distribution control device is a small electric cabinet, and is fixed on the tennis lifting device shell, wherein the width dimension is 300 x 500 x 200 mm. The control items include: the tennis lifting device is started and stopped, the ball feeding speed, the switching of left and right ball falling points, the starting and stopping of shooting and projection, the collection and transmission of various signals and the like. The electric cabinet is outdoor waterproof type with a glass outer door guard plate, and an on-off and indication button is arranged on the inner door face, wherein a left-right falling ball switching control is further provided with an on-site switching button on a front upright post of the frame. Further, a remote control device can be attached for adjusting the ball falling speed and switching between left and right ball falling points at any time in practice.

The central data processing control unit is a site server 9, and can automatically and semi-automatically control various start and stop actions, ball feeding speed and ball falling point selection on the left side and the right side of the exercise device through specific software and programs, collect, analyze and store collected data, and perform specific AI intelligent simulation, data, image output and the like.

The projection device comprises a projector fixed on the upper part of the training device and a projection screen fixed on the back door frame. The simulation result of the central data processing control unit can be projected onto a screen in the form of an image, including a tennis flight path, a ball speed, a pole passing condition, a ball falling position and the like.

The network data transmission unit and the cloud platform sharing unit are existing networks and electronic products, and the training devices at the positions are subjected to centralized control, data collection, storage, analysis, feedback and the like at the far end through newly developed special software.

The data sharing unit comprises various terminal products, such as smart phones, networking computers, networking printers and the like, and can log in through newly developed APP applets, special computer software, user names and login passwords, so as to inquire and manage training conditions, data and the like of each trainer.

The length, width and height of the training device can be made into series products with different sizes, and the training device is selected according to the age of students and the training time. The ball blocking curtain can be independently arranged singly or in multiple rows, and the frame cross bars and the vertical rods and the side ball blocking curtains can be shared when the multiple rows are arranged.

The embodiment adopts proper equipment and structure to realize the ball serving, ball hitting, ball blocking, automatic ball collecting, lifting and conveying, left and right automatic ball falling in tennis practice, and the ball falling device is made into respective independent practice positions during use, has small occupied area and can be distributed or combined in a flexible arrangement mode according to school practice sites.

The ball collecting system consists of a tennis ball collecting tank, an inclined bottom ball collecting tank and a front ball inclined plate, wherein the tennis ball collecting tank is close to the front face of the rear end of the tennis ball collecting tank, the inclined bottom ball collecting tank is arranged at the lower part of the tennis ball collecting tank, and the ball inclined plate is arranged in front of the tennis ball collecting tank.

The ball conveying system comprises a tennis lifting device and a chute pipe. Further, the tennis ball lifting device is a device which is vertically provided with a similar scraper conveyor, and can only accommodate one tennis ball between two adjacent partition boards, and the belt (or chain) is driven to rotate by the motor, so that the partition boards are lifted to the top continuously and enter similar chute pipes.

The ball feeding device consists of a timing ball feeding turntable, a ball falling groove pipe and a left-right ball falling switching device.

The data acquisition device comprises a special RGB high-definition camera, a special tennis racket with an induction element and a signal line, wherein the special RGB high-definition camera, the special tennis racket with an induction element and the signal line are respectively fixed on the outer sides of the left batting point and the right batting point.

The power distribution control device is a small electric cabinet and is fixed on the tennis lifting device shell. The control items include: the tennis lifting device is started and stopped, the ball feeding speed, the switching of left and right ball falling points, the starting and stopping of shooting and projection, the collection and transmission of various signals and the like.

The central data processing control unit is a site server, can automatically and semi-automatically control various start and stop actions, ball feeding speed and left and right ball falling point selection of the exercise device through specific software and programs, collects, analyzes and stores collected data, and performs specific AI intelligent simulation, data and image output and the like.

The network data transmission unit 10, the cloud platform network server 11 and the data sharing receiving terminal 12 are existing networks and electronic products, and the training devices at the positions are subjected to centralized control, data collection, data storage, analysis, feedback and the like at the far end through newly developed special software.

The device can be manufactured in standard, packaged and shipped in parts, and manufactured and installed in an on-site assembly mode. When the single exercise position is separately installed, the upright rod and the cross rod of the frame are assembled on the prepared installation site according to the figure, the top plate, the side curtain and the front ball blocking curtain, the ball collecting device, the lifting device, the chute pipe, the ball feeding device, the camera, the electric cabinet, the connecting computer and the like are respectively installed, and the ball rolling inclined plate at the front side of the ball collecting groove is pulled down and obliquely lapped on the ground. The installation position is connected with a power socket in advance. After the assembly, the batting exercise can be performed by plugging in a power supply.

When the ball is shot, the tennis lifting device and the ball feeding device are not started, other systems are started, a basket of tennis ball is lifted to the position of a ball feeding point, and a user holds the ball, throws the ball, swings the ball, hits the ball, and finishes ball feeding. The ball flies out and falls into the ball receiving groove under the blocking of the blocking curtain, or rolls forwards after falling to the ground and rolls into the ball receiving groove through the ball rolling sloping plate.

When the ball is put into practice, a certain amount of tennis balls are put into the ball receiving groove, the lifting device and the ball feeding device are started, the ball falling point on the left side or the right side is selected, the field control server is opened, and the operation is a one-key operation through continuous locking. And selecting a proper speed gear for ball feeding, and automatically feeding the tennis ball to a ball falling point to fall, so that the ball can be hit after being sprung up. The hit tennis ball is generally hit on the front ball blocking curtain, and the ball falls into the ball receiving groove below; a small amount of tennis balls fall to the area beyond the front ball blocking curtain and roll onto the ground in front of the ball collecting device, and under the action of the forward rolling residual force, the tennis balls roll into the ball collecting groove through the ball rolling inclined plate in front of the ball collecting groove. Or after training for a certain time, the residual balls on the ground are manually and lightly pushed to the ball receiving groove, and the balls roll into the ball receiving groove through the inclined plate, so that the training can be continued.

In practice, the video monitoring and data acquisition device can identify parameters such as swing action, swing height, swing speed, ball striking point position and angle of a practicer, and the parameters are collected and transmitted to a site server (computer), and whether the ball striking action of the practicer is standard or not is determined by specific software operation, AI intelligent simulation and comparison, so that the score of the practice is given and is used as a measurement of the tennis ball striking action of the practicer. After the training is finished, the training person can check on the computer, and the computer can also give a concise form which is printed in real time for the training person to take away, learn and improve. The trainer and teacher can also install corresponding APP applet on their own mobile phone, and after the mobile phone is opened to connect with the training device, the training score can be checked on the mobile phone. The intelligent simulation can also predict the flying height, distance, track and ball drop point of the tennis after being sent out or hit, and the tennis is projected onto the projection screen in an image form, so that the exerciser can feel very intuitively. The screen throwing system is selectable, and a purchaser can select to purchase according to own conditions, so that normal service and batting practice are not affected by not purchasing the screen throwing system.

After the practice is finished, the ball loading basket can be placed below the ball falling point, the ball receiving gear is selected for the ball receiving device, all tennis balls are collected in the basket, and related personnel are handed for storage. All switches and power supplies on the electric cabinet are closed before leaving, the power socket is pulled out, and the front sloping plate of the ball collecting groove is turned up to be combined with the ball collecting groove. When the tennis ball is practiced next time, the practice person can practice the tennis ball repeatedly according to the steps after taking out the tennis ball.

As shown in fig. 4, the exercise may be performed in one or more exercise stations. For example, four exercise stations are arranged side by side, a tennis exercise device (tennis exercise device) purchased to a school is assembled on site, a plurality of exercise stations are assembled in a row, two adjacent exercise stations share a column, a cross bar and a side ball blocking curtain of a frame, and a site data control server is in a N-pulling mode. During practice, multiple persons can practice simultaneously, and the whole class students practice in turn. The operation procedures before, during and after the exercise are as described above.

The above embodiments only describe the mounting of the device in two specific situations. The device can be manufactured into products with various specifications according to peripheral size sequences which are distributed by single person, multiple persons or students according to ages, and is used for schools according to actual conditions. On this basis, the same industry personnel can make small changes in structure and arrangement and size, and all belong to the protection scope of the application.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tennis training device, comprising:

a ball blocking assembly;

the ball collecting assembly is arranged adjacent to the ball blocking assembly and is provided with a ball collecting opening;

and the ball feeding assembly is positioned on one side of the ball receiving assembly, which is far away from the ball blocking assembly, and is used for conveying the collected tennis balls to the ball feeding assembly, and the ball feeding assembly is provided with a ball outlet.

2. Tennis training device according to claim 1, wherein said ball receiving assembly (13) comprises a yo-yo groove (13.4), said yo-yo groove (13.4) comprising a floor, said floor of said yo-yo groove (13.4) being inclined, and wherein a position corresponding to the lower part of said floor of said yo-yo groove (13.4) has a ball outlet with a diameter larger than the outer diameter of the tennis ball.

3. Tennis training device according to claim 2, wherein said yo-yo groove (13.4) comprises side walls, wherein the floor of said yo-yo groove (13.4) is arranged gradually inclined in the width direction of said ball receiving assembly, and wherein said ball outlet is located at the bottom of said yo-yo groove (13.4).

4. A tennis training device according to claim 3, wherein the cross section of the floor of said yo-yo groove (13.4) taken in a plane perpendicular to the floor of said yo-yo groove (13.4) is circular arc, the inner diameter of said circular arc being adapted to the outer diameter of said tennis ball.

5. The tennis training device according to claim 2, wherein said ball receiving assembly further comprises:

the ball collecting box body comprises a front side plate (13.1), a rear side plate (13.2), a left side plate, a right side plate and an inclined bottom plate (13.3), wherein the front side edge of the inclined bottom plate (13.3) of the ball collecting box body is connected with the lower edge of the front side plate (13.1) of the ball collecting box body, the rear side edge of the inclined bottom plate (13.3) of the ball collecting box body is connected with the upper edge of the front side plate (13.1) of the ball sliding groove (13.4), the front side edge of the inclined bottom plate (13.3) is gradually lowered to the rear side edge of the inclined bottom plate (13.3), or the ball sliding groove is positioned in the middle of the front side plate (13.1) and the middle of the rear side plate (13.2), and the inclined bottom plate (13.3) is inclined from front to back side to side.

6. Tennis training device according to claim 5, wherein the ball receiving assembly further comprises a ball ramp (13.5), the upper side of the ball ramp (13.5) being adjacent to the upper edge of the ball receiving box, the lower side of the ball ramp (13.5) being in contact with the ground.

7. Tennis training device according to claim 6, characterized in that the upper side of the ball ramp (13.5) is pivotally connected to the ball receiving box.

8. Tennis training device according to claim 1, wherein the ball receiving assembly further comprises a tennis lifting structure (14), the tennis lifting structure (14) comprising a conveyor belt, a driving wheel and a driven wheel, the conveyor belt being of closed loop shape, the driving wheel and the driven wheel being located at the two ends of the conveyor belt, respectively.

9. Tennis training device according to claim 8, wherein said conveyor belt further comprises an inner conveyor belt, a housing and a plurality of lifting baffles (14.1), said plurality of lifting baffles (14.1) being connected to said inner conveyor belt at spaced intervals, said housing being provided over said inner conveyor belt and the circumferential outer sides of said plurality of lifting baffles (4.1).

10. Tennis training device according to claim 9, wherein the gap between adjacent lifting baffles (14.1) is larger than the diameter of one tennis ball.

11. Tennis training device according to claim 1, characterized in that it comprises:

the first pipe body is horizontally and obliquely arranged, the first end of the first pipe body is higher than the second end of the first pipe body, and the first end of the first pipe body is provided with a ball inlet;

the second pipe body (19), second pipe body (19) are vertical to be set up, the first end of second pipe body (19) with first pipe body is linked together, the second end of second pipe body (19) has the play ball mouth.

12. The ball feeding assembly of claim 11, wherein the extreme end of the second tube body is a short arc bent tube to simulate a ball throwing track of a coach hand, so that a ball is shot by a practicer after the tennis ball is sprung up; and/or the extreme end of the second pipe body faces downwards vertically.

13. Tennis training device according to claim 11, wherein there are two second tubes, one on the left side of the exerciser and one on the right side of the exerciser.

14. Tennis training device according to claim 11, wherein the second tube (19) is of telescopic construction.

15. Tennis training device according to claim 14, wherein said second tube (19) comprises a plurality of second tube segments, adjacent said second tube segments being telescopically connected.

16. The ball feed assembly according to claim 15, further comprising a damping structure (20), the damping structure (20) being arranged within the second tube body (19).

17. Tennis training device according to claim 16, wherein said damping structure (20) is provided in the lowermost second pipe section, said damping structure (20) comprising:

The tennis ball pressing device comprises a plurality of spring pieces, wherein each spring piece is of a curve structure, the minimum diameter between the spring pieces is smaller than the outer diameter of the tennis ball, the tennis ball is pressed against the spring pieces, and the tennis ball can pass through a through hole between the spring pieces; or alternatively

The tennis ball pressing device comprises an elastic net piece, wherein a through hole is formed in the middle of the elastic net piece, the inner diameter of the through hole is smaller than the outer diameter of the tennis ball, the tennis ball abuts against the through hole, and the tennis ball can pass through the through hole.

18. Tennis training device according to claim 11, wherein the first pipe body comprises a first horizontal pipe section (15) and a second horizontal pipe section (18), wherein the first end of the first horizontal pipe section (15) is a ball inlet, the second end of the first horizontal pipe section (15) is communicated with the first end of the second horizontal pipe section (18), the first horizontal pipe section (15) extends from a ball blocking net to a exerciser, the second horizontal pipe section (18) extends in the width direction of the ball blocking net, and the second pipe body (19) is arranged below the second horizontal pipe section (18).

19. The tennis training device according to claim 18, wherein said ball feeding assembly further comprises a ball feeding turntable structure (16), said ball feeding turntable being disposed between said first horizontal section and said second horizontal section, said ball feeding turntable structure (16) comprising a turntable motor and a turntable, said turntable motor being coaxially connected to said turntable, said turntable comprising a first turntable side plate, a second turntable side plate and a plurality of turntable partitions, each of said turntable partitions being radially disposed between said first turntable side plate and said second turntable side plate, a tennis ball receiving space being provided between adjacent turntable partitions, an inlet of said tennis ball receiving space being located at a side of said turntable.

20. Tennis training device according to claim 18, wherein said second tubular body (19) is a plurality, said plurality of second tubular bodies (19) being arranged under said second horizontal tubular section (18), said ball feeding assembly further comprising a ball drop switching structure (17), said ball drop switching structure (17) being arranged on said second tubular body (19).

21. Tennis training device according to claim 20, wherein the drop ball switching structure (17) comprises a switching actuator, a first communication pipe and a second communication pipe, both of which are connected to the switching actuator, the first communication pipe being a straight pipe section, the second communication pipe being a right-angled pipe section, the second horizontal pipe section (18) having a fracture section located directly above the second pipe body (19) near the first end of the second horizontal pipe section (18), the switching actuator driving either the first communication pipe or the second communication pipe in the fracture section.

22. The tennis training device according to claim 1, wherein said ball blocking assembly comprises a ball blocking curtain disposed on a side of said ball receiving assembly remote from said ball outlet of said ball feeding assembly.

23. The tennis training device according to claim 22, further comprising a frame assembly comprising a frame and a side screen, said ball blocking screen being secured to said frame assembly, said side screen being disposed to a side of said frame.

24. The tennis training device according to any one of claims 1 to 23, further comprising a control assembly comprising a control body and an information acquisition structure, said control body being electrically connected to said information acquisition structure.

25. The tennis training device according to claim 24, wherein said control assembly further comprises a projection structure electrically connected to said control body, said projection structure projecting action information of an exerciser onto said ball screen.

26. The tennis training device according to claim 24, wherein said control assembly further comprises a signal transmitter and a signal receiver, each of said signal transmitter and said signal receiver being electrically connected to said control body.