CN209809463U - Belt-driven ball training machine - Google Patents

Abstract

The patent discloses a belt drive's ball training machine, this patent adopt belt drive as the power supply of drive ball, utilize the ball to get into belt drive's transmission track after, drive the ball with higher speed by the belt to the ball is according to the direction of difference, speed, rotation, launches away. The ball collecting unit, the vertical direction adjustment and the horizontal direction adjustment are matched to complete all facilities from ball collection to ball launching control, and the ball training machine with complete functions is formed.

Description

Belt-driven ball training machine

Technical Field

The invention relates to a ball training machine, in particular to a ball training machine driven by a belt principle. The ball comprises: volleyball, table tennis, softball, football, and the like.

Background

Seen from the existing market products and applied patents, the volleyball training machine has more products and patents and is widely applied. To illustrate the novel and specific application of this patent, the following is an analysis of the technology of a volleyball training machine, and as an example, for volleyball training. The novelty and utility of this patent is not limited to volleyball training, but the rights include volleyball, table tennis, softball, and soccer training.

The existing volleyball service machines are not fundamentally volleyball training machines, and can only simulate service of volleyballs, pass of two passes and smash. In addition, the portable stadium is large in size, inconvenient to carry and install and debug on site, and needs to be driven by a power supply, so that the stadium can be applied to the stadium indoors and cannot be used by seasides.

In view of the service principle of the volleyball machine, the prior product or the patented volleyball training machine has the following principles: 1) the spring or the spring steel plate collides with the ball body through stretching and then suddenly releasing, 2) the compressed gas suddenly releases to impact the ball body, 3) the compressed gas suddenly releases to push the cylinder piston, thereby pushing the ball body, 4) the hydraulic transmission drives the piston to push the ball body, 5) the motor drives the cam to push the push rod to do linear motion to push the ball body, 6) the motor suddenly rotates to drive the swing rod, the tail of the swing rod impacts the ball body, and 7) the friction wheels (generally two) rotate to drive the ball body to eject. The patented technology of table tennis is also some of these.

The disadvantages of method 1) are: the spring or the spring steel plate is of mass, when the spring or the spring plate impacts the ball, the kinetic energy of the spring or the spring plate is still high, the next action of the spring or the spring plate needs to be decelerated to zero, the energy in the deceleration process is changed into sound and heat, the impact sound of the machine is great, and the impact action of the spring has potential safety hazards. The machine itself is inefficient because the majority of the energy of the spring is dissipated through the squeaking, heating and bumping (other than with the ball).

The disadvantages of the methods 2 to 4) are: through the air pressure or hydraulic principle, the machine itself needs to take the air pump or hydraulic pump, and the volume and the cost of machine itself are very high, and manufacturing process is complicated. Moreover, the release of compressed gas can produce loud sounds that are not suitable for use in gyms. As for the hydraulic driving principle, the movement of the hydraulically driven piston is much slower than that of pneumatic and electric, unless a powerful hydraulic pump is installed, and the speed of the piston impacting the ball does not reach the initial speed of the ejection of the ball at all. If a powerful hydraulic pump must be installed, the weight and cost of the machine itself can be far beyond practical limits.

The disadvantages of methods 5 to 6) are: the motor is static in the initial state, and is started when a ball is hit, and due to the size limitation of the motor, the motor needs to accelerate the ball hitting device to a high speed required by a ball in a short time and a short distance, the ball hitting device is also of a quality, and the acceleration of the ball hitting device in a short time needs to be provided with a large motor. Similarly, the sound and loss generated by the speed reduction of the ball striking device itself after the ball striking is completed are similar to those of the methods 1 to 4).

The methods 1-6) are also characterized in that the ball hitting action adopts reciprocating (back and forth) movement, so that after the ball hitting is finished, the energy on the ball hitting device is released and then pulled back to the original position, and undesirable negative effects such as sound, heat, loss and the like are generated in the process.

Method 7) is the method adopted by the existing products in the market at present, and the sound is small and the method is safe. The disadvantages are that: since the motor is always in a rotating state, the hitting time is less than 1%, and therefore, the efficiency is low. Moreover, the contact time of the friction wheel and the motor is very short (namely the time that the ball passes through the friction wheel), so the ball body is accelerated to a certain speed in a short time, the power (two) of the motors is required to be far more than the power for hitting the ball (the total power of the two motors is about 1 kilowatt KW), and the brought side effect is as follows: damage to the surface of the sphere.

Methods 1-6), either the requirement for spin at the time of ball launch is not well met or this function is not available.

For example, chinese utility model patents with publication numbers CN96210802.2, CN201710699810.4, CN201710333002.6, CN201720135074.5, CN201621428277.5, CN201621272226.8, CN201621243871.7 are typical applications of method 1).

For example, chinese utility model patents with publication numbers CN201320409835.3, CN201710051425.9, CN201621257149.9, CN201621250112.3, CN201610386222.0 are typical applications of methods 2-4).

For example, chinese utility model patents with publication numbers CN201410775303.0, CN201720127659.2, CN201720117582.0, CN201720091188.4 are typical applications of methods 5-6).

For example, chinese utility model patent publication No. CN201720148243.9, CN201621419382.2, is a typical application of method 7).

Disclosure of Invention

In order to overcome the defects that the prior art is large in size, heavy in weight (method 2-4), too loud in sound (method 1,2,3,5, 6), too low in efficiency (all methods), insufficient in safety (method 1,2,3, 6), insufficient in effectiveness (method 3,4,5, 6), and incapable of rotating a ball (method 1,2,3,5, 6), a belt drive is adopted as a power source for driving the ball, and the ball is accelerated by the belt after entering a launching track driven by the belt, so that the ball is launched according to different directions, speeds, rotations and different directions. And the ball collecting unit, the vertical adjustment and the horizontal adjustment are matched to form the ball training machine with complete functions.

The technical scheme adopted by the patent for solving the technical problem is as follows: a belt-driven ball training machine comprises a launching head, a launching head bracket, a training machine chassis, a ball conveying control unit and a ball collecting unit. The launching head is installed on the launching head support, the launching head support is installed on the chassis of the training machine, the ball conveying control unit is connected with the launching head above the launching head, and the ball collecting unit is arranged above the ball conveying control unit.

The belt-driven ball training machine is characterized in that the launching head consists of belt driving components, and the belt driving components comprise two types: the belt drives the component A and the component B; different components constitute different emitter heads. This assembly is the most basic unit. The principle of such a drive assembly is: when the motor on the driving component starts to rotate, the belt is driven to move. Once the ball contacts the belt, the ball is carried along.

In the belt-driven ball training machine, the belt driving component A consists of the driving motor, the main driving wheel, the large driven wheel, the small driven wheel and the belt. The driving motor drives the main driving wheel to rotate, so as to drive the belt, the large driven wheel and the small driven wheel to move, and the belt drives the balls to move. The cylindrical surfaces of the main driving wheel, the large driven wheel and the small driven wheel, which are contacted with the belt, are surfaces with circular arcs, so that the contact surface with the ball is increased when the ball is dragged.

In the belt-driven ball training machine, the belt driving component B consists of the driving motor, the main driving wheel, the big driven wheel, the tension driven wheel and the belt. The belt driving component B is matched with the driving wheel component when working. The driving wheel assembly consists of a driving motor and a main driving wheel. The belt drives the driving motor on the component B to drive the main driving wheel to rotate, so as to drive the belt and the large driven wheel to move, and the belt drives the balls to move. Meanwhile, a driving motor on the driving wheel component drives the main driving wheel to rotate, and the auxiliary belt drives the balls to move along the launching track. The cylindrical surfaces of the main driving wheel and the large driven wheel are circular arc surfaces, so that the contact surface with the ball is increased when the ball is dragged.

In the above belt-driven ball training machine, the launching heads are different launching heads having a ball launching function formed by the above driving assembly (assembly a or assembly B): one or more driving components are distributed in a circle and form a cylindrical launching track in the launching head; the diameter of the cylindrical launching track is slightly smaller than the diameter of the ball, and the diameters of the tracks are unequal from the entrance end to the exit end, forming a bell mouth shape.

In the belt-driven ball training machine, the launching head is completed by the following scheme:

scheme 1: the belt drives the component A and the guide groove;

scheme 2: a belt drive a-assembly + one or two belt drive a-assemblies;

scheme 3: belt drive B assembly + one or two drive wheel assemblies;

the basic principle of the above schemes is that one or more objects (belts and wheels) moving at high speed relative to the ball are used for driving the ball to accelerate on the ball, and finally the ball leaves the launching track to be shot. The selection of the scheme is determined according to the requirements of the ball quality, size, speed and rotation degree. In the schemes 2 and 3, the rotating speed and the rotating direction of the ball when the ball is launched are controlled by setting different rotating speeds of the driving motors on each driving assembly.

In the belt-driven ball training machine, the launching tracks formed by the schemes 1,2 and 3 are different. The launching trajectory formed by solutions 1 and 2 is a straight line, and the launching direction of the ball is the straight line direction. While the launch trajectory formed by scheme 3 is an arc around the main drive wheel of the drive wheel assembly, the direction of ball launch is the same as the normal to the plane formed by the belt drive B assembly and the drive wheel assembly.

In the belt-driven ball training machine, the ball conveying control unit consists of a ball dropping pipeline, a time control motor, a rotating disc, a driving chain rod, an arc sliding track and a blocking slip sheet. The control of the time is controlled by the rotation speed of the time control motor. And when the time control motor rotates for one circle, the driving chain rod is driven to move up and down once through the rotating disc, and the driving chain rod drives the blocking sliding piece to move up and down once in the arc sliding track. Each up and down movement causes one and only one ball to drop through the guide slot into the launching track.

In the belt-driven ball training machine, the ball collecting unit consists of the funnel, the driven chain rod, the guide ring and the input pipeline. The whole ball collection unit and the ball conveying control unit are quickly and temporarily assembled on site through the matching of the input pipeline of the funnel and the assembling joint. After the assembly is completed, the driven chain rod drives the guide ring to move up and down by blocking the sliding sheet to be connected with the driving chain rod. When the guide ring moves up and down, the blockage of the balls at the inlet of the input pipeline is pushed away, and only one ball is guided to fall.

According to the belt-driven ball training machine, the automatic adjustment of the emitting head in the up-and-down direction is completed through the angle adjusting motor on the emitting head support.

In the belt-driven ball training machine, the automatic adjustment of the launching head in the horizontal direction is completed by rotating the chassis and the chassis rotating motor.

The beneficial effect of this patent is: the belt-driven ball training machine adopts a method that the motor drives the belt and the belt drives the ball to move, thereby effectively solving the defects of large sound, large volume, heavy weight, low efficiency, high cost and insufficient safety of the prior patent or product. Meanwhile, the functions of collecting the balls, serving the balls at the serving positions, entering the serving state, launching direction, launching speed and rotating force are synchronously completed on one machine by utilizing the characteristics of the belt driving structure, the effectiveness and the running stability of launching the balls at each time are ensured, the repetition precision is greatly improved, and the requirements on the weight, the size and the consistency of materials of the outer skin of the balls are greatly reduced.

Drawings

The invention is further explained below with reference to the drawings and the embodiments.

FIG. 1 is a schematic structural diagram of a belt-driven ball training machine, which is composed of a launching head, a ball conveying control unit, a ball collecting unit, a launching head support and a training machine chassis (taking the launching head manufactured by scheme 2 as an example);

FIG. 2 is a schematic representation of the formation of a cylindrical launch rail by three belt-driven A-assemblies as the launch heads;

FIG. 3 is a schematic structural view of a belt drive A assembly;

FIG. 4 is a schematic structural view of a belt drive B assembly;

FIG. 5 is a schematic structural view of a drive wheel assembly;

FIG. 6 is a schematic view of a single belt drive A assembly as a drive;

FIG. 7 is a schematic view of the structure in which the A-assembly is driven by two belts;

FIG. 8 is a schematic view of a configuration in which three belt drive A assemblies are used as drives;

FIG. 9 is a schematic view of a single belt driven B-assembly and two drive wheel assemblies as drives;

FIG. 10 is a schematic diagram of a control structure for the time interval during which a ball enters the launch head and for preventing the ball from entering the input duct from clogging;

FIG. 11 is a schematic view of the application of FIG. 10 in a complete machine;

FIG. 12 is a schematic view of the chassis of the belt driven exercise machine functioning to move the entire structure in a circular motion in the horizontal direction;

in the figure: 1. the device comprises a launching head, 2, a launching head bracket, 3, a training machine chassis, 4, balls, 5, a cylindrical launching track, 6, a main driving wheel, 7, a small driven wheel, 8, a belt, 9, a large driven wheel, 10, a driving motor, 11, a belt driving component structural part, 12, a tension driven wheel, 13, a driving wheel component, 14, a belt driving component A, 15, a single belt driving component bracket, 16, a guide groove, 17, a single driving unit, 18, a double driving unit, 19, a triple driving unit, 20, a belt driving component B, 21, a time control motor, 22, a rotating disc, 23, a driving chain rod, 24, an arc sliding track, 25, a blocking slide sheet, 26, a driven chain rod, 27, a guide ring, 28, a chassis supporting leg, 29, a rotating chassis and 30, a chassis rotating motor, 31. angle adjusting motor, 32 to drop balls, 33 to drop ball pipes, 34 to assemble joint, 35 to input pipe, 36 to funnel, 37 to fine adjusting bracket, 38 to eccentric shaft, 39 to ball conveying control unit, 40 to ball collecting unit.

Detailed Description

Note: for convenience and brief description, unless otherwise specified, "drive assembly" in this specification is a generic term for "belt drive a assembly 14", "belt drive B assembly 20", and "drive wheel assembly 13"; the "launch rail" is a generic term for the launch rail formed by the "drive assembly" according to schemes 1,2, 3.

As shown in fig. 3, the belt drive a-pack 14 is first made. A main driving wheel 6, a small driven wheel 7, a large driven wheel 9 and a driving motor 10 are arranged on a structural member 11 of the belt driving assembly. The belt 8 is then installed to form a belt drive a assembly 14.

As shown in fig. 4, the belt drive pulley B assembly 20 is manufactured. A main driving wheel 6, a large driven wheel 9, a tension driven wheel 12 and a driving motor 10 are arranged on the structural member of the belt driving component B. The belt is installed to form a belt drive B assembly 20. The natural state of the tension follower 12 is lowermost due to the action of the tension spring, causing the upper belt 8 to be stretched straight.

The following is a description of different schemes for fabricating the emitter head 1 according to schemes 1,2, and 3.

As shown in FIG. 6, a belt drive A unit 14, a single belt drive unit holder 15 and a guide groove 16 are installed on the base of the emitter head 1. And then installing a belt driving component fine adjustment bracket 37 to finish the emitting head 1 consisting of the single driving unit 17 in the scheme 1.

As shown in FIG. 7, two belt driving A components 14 are arranged on the base of the emitter 1, and then a belt driving component fine-tuning bracket 37 and a guide groove 16 are arranged, so that the emitter 1 consisting of the dual driving units 18 of the scheme 2 is completed.

As shown in fig. 8, on the base of the emitter head 1, three belt drive a assemblies 14 are mounted. And then installing a belt driving component fine adjustment bracket 37 and a guide groove 16 to finish the transmitting head 1 consisting of the three driving units 19 of the scheme 2.

As shown in fig. 9, one belt drive B unit 20 and one to two drive wheel units 13 are mounted on the belt drive unit fine adjustment bracket 37 to complete the transmission head 1 of the embodiment 3. Two drive wheel assemblies are shown, one drive wheel assembly is similar to that shown, except that a single drive wheel assembly is directly above the belt drive B-assembly 20.

In the embodiments 1 and 2, the circular launching track 5 of the launching head 1 is formed, when the driving motor 10 on each belt driving a-component 14 starts to rotate, once the ball 4 enters the cylindrical launching track 5 through the guide of the guide slot 16, each belt driving a-component generates slight extrusion and large drag to the ball under the action of the bell mouth of the cylindrical launching track 5, and the ball moves forward rapidly under the drive of each belt.

In the embodiment 3, the circular launching track 5 is formed, when the ball is guided into the launching track through the guide groove 16, the upper belt is bent downwards due to the pressing of the ball 4 on the driving wheel assembly 13, and the tension driven wheel 12 is forced to move upwards to compensate the bending of the belt. The ball is squeezed between the curved portion of the upper belt and the drive wheel assembly 13 by the force of the belt tension, and the ball is moved forward along the edge of the main drive wheel 6 of the drive wheel assembly 13 due to the movement of both the belt and the drive wheel assembly 13.

In fig. 2, a cylindrical launching track 5 formed in a launching head 1 composed of three belt drive assemblies 14 is clearly shown. In the transmitter head 1 constructed by all the schemes 1,2,3 mentioned in this patent, all the cylindrical transmitting tracks 5 are formed to have the same concept and function. For the sake of simplicity and clarity, only one cylindrical launch rail 5 is shown here as a prototype in fig. 2.

The belt drive A assembly 14 or the belt drive B assembly 20 is provided with a drive motor 10, the drive motor 10 is also arranged on the drive wheel assembly 13, and the rotating speed of the motor is completed by a control circuit. The speed of each motor can be controlled individually. After the motor rotates, the belt on the belt driving component rapidly moves forwards in a single direction. Once the rotating speed of the motor reaches the preset value, the machine enters a state to be launched.

Once the ball enters the launching track, the ball can only move to the ejection end of the launching track under the action of the movement of the belt or the driving wheel, and the speed is increased. When the ball reaches the end (ejection end) of the cylindrical launching track 5, the ball has accelerated to the limit in the launching track and then moves further forward in the direction of the axis of the launching track away from the launching track.

The bell mouth shape of the launching track mentioned in [ 0020 ] and the function of this bell mouth shape described in [ 0039 ], in combination with the fine tuning of the diameter of the launching track 5 by the fine tuning support 37, can effectively adjust the conformity of the belt 8 and the ball 4; the addition of the circular cylindrical surfaces of the main driving wheel 6, the small driven wheel 7 and the large driven wheel 9 as shown in fig. 3,4 and 5 can effectively adjust the friction force between the belt 8 and the balls 4.【0040】 The working principle described herein using the tension driven pulley 12 of fig. 5 is an illustration of the effective adjustment of the fit and friction of the belt 8 and balls 4 in case of scheme 3.

In all the schemes, a plurality of belt driving assemblies (an assembly 14 or a B assembly 20 or a driving wheel assembly 13) are distributed on the circumference of the launching track, and under the condition that the plurality of driving assemblies work in a matching way, if the rotating speed of a motor on each driving assembly is different, the ball can rotate in the accelerating process of the launching track, so that the ball is launched with the rotation when being shot out of the launching track. By adjusting the rotating speed of each motor to be different, the rotating direction of the ball during shooting can be adjusted randomly according to the different installation positions of each driving assembly on a circle, for example: the upper rotating ball, the lower rotating ball and the side rotating ball are adjusted within 360 degrees. And obtaining balls with different rotating forces according to different speed distribution on the driving assembly.

Shown in fig. 11 are a ball delivery control unit 39 and a ball collection unit 40. As shown in fig. 10, the ball feed control unit 39 is shown to be composed of a timing control motor 21, a rotary disk 22, a driving link rod 23, an arc slide rail 24, a blocking slide 25, a ball dropping duct 33, an assembly joint 34 and an eccentric shaft 38; the ball collection unit 39 is shown to consist of the follower link 26, the guide ring 27, the inlet conduit 35 and the funnel 36.

The implementation process comprises the following steps: the time control motor 21 and the arc sliding track 24 are installed on the ball dropping pipe 33. The guide ring 27 is mounted in the funnel 36. Then, the input pipe 35 of the funnel 36 is assembled by the assembly joint 34 and the ball dropping pipe 33. Such a design provides a function of disassembling and assembling the ball collecting unit 40 for the convenience of on-site installation and the satisfaction of the needs of different customers.

In addition to fig. 11, as shown in fig. 10, a rotary disk 22 is installed on a time control motor 21, a barrier slide 25 is installed in a circular arc slide rail 24, a driving link rod 23 is installed between the rotary disk 22 and the barrier slide 25, an eccentric shaft 38 is installed between the driving link rod 23 and the rotary disk 22, and a driven link rod 26 is installed between the barrier slide 25 and a guide ring 27. The ball feed control unit 39 and the ball collection unit 40 in the entire fig. 11 are finally installed above the entrance end of the cylindrical launching track 5 of the launching head 1.

Once the time control motor 21 starts to rotate, the rotating disc 22 is driven to rotate, and the driving link rod 23 pushes the blocking slide 25 to move up and down in the circular arc sliding track 24 under the action of the eccentric shaft 38. When the blocking slide 25 is in the lower position, the balls 32 to be dropped are blocked, and when the blocking slide 25 is in the upper position, the balls 32 to be dropped fall into the cylindrical launching track 5 through the guide groove 16 while the upper balls are blocked.

After assembly, the driven link 26 is connected to the driving link 23 via the blocking slide 25, and drives the guide ring 27 to move up and down. When the guide ring 27 moves up and down, the blockage caused by the balls at the inlet of the inlet duct 35 is pushed away, and only one ball is guided to fall from the guide ring 27.

When the blocking slide 25 is in the down position, all balls are blocked from entering the launch track. When the blocking slide 25 moves upwards in the lower position, the ball to be dropped 32 falls into the launch track, while the blocking slide 25 blocks the ball above from falling. When the blocking slide 25 moves downwards from the upper position, the upper ball falls to a position where the ball 32 is to be dropped, but cannot continue to fall into the launch track.

As shown in FIG. 1, the emitter 1, including the ball feed control unit 39 and the ball collecting unit 40, is mounted on the emitter support 2, and the emitter 1 and the emitter support 2 are integrally mounted on the training machine chassis 3. The angle adjusting motor 31 and the chassis rotating motor 30 are completely installed together with the ball feed control unit 39 and the ball collection unit 40. Forming the whole training machine.

Here, the connection of the ball feed control unit 39 and the head cartridge 2 may be accomplished by a chain structure. Other methods are also possible. Different connection methods may have the same effect.

The emitting head bracket 2 adjusts the elevation angle of the emitting head 1 through the angle adjusting motor 31, and is adjustable within 180 degrees; the chassis 3 of the training machine adjusts the direction of the transmitting head 1 in the horizontal direction through the chassis rotating motor 30, and the 360-degree adjustment is realized; the cooperation between the chassis rotation motor 30 and the rotating chassis 29 can be gears, belts or simply friction; the rotating chassis 29 rotates around the center of the trainer chassis 3.

In view of portability and miniaturization, several large parts of the entire machine can be disassembled on site, and can be placed in the trunk of a home car as a whole. Corresponding to the design concept, the power utilization part in the machine adopts the automobile power utilization grade (12V or 24V), the machine operates independently with a 12V battery, and a lead can be led out from a household automobile to supply power to the machine, so that the dependence on the commercial power is completely eliminated.

The embodiments and examples set forth in this patent specification are presented solely for the convenience of describing the principles and inventive features and are not intended to limit the scope of what the patent claims might be put into practice. The scope of the claims of this patent also applies to products and applications derived from the principles and features of this patent.

Claims (10)

1. A belt-driven ball training machine, includes transmission head (1), transmission head support (2), training machine chassis (3), cylindrical launching track (5), ball conveying control unit (39) and ball collecting unit (40), its characterized in that: the ball conveying control unit (39) and the ball collecting unit (40) are installed above the entrance end of the cylindrical launching track (5) of the launching head (1), the launching head (1) comprises the ball conveying control unit (39) and the ball collecting unit (40) which are installed on a launching head support (2), and the launching head (1) and the launching head support (2) are installed on a training machine chassis (3) as a whole.

2. The belt driven ball training machine of claim 1, wherein: the transmitting head (1) adopts 3 schemes, wherein the scheme 1 is as follows: the belt drives the A component (14) and the guide groove (16); scheme 2: a belt drive a-pack (14) + one or two belt drive a-packs (14); scheme 3: a belt drive B assembly (20) + one or two drive wheel assemblies (13); in the schemes 2 and 3, the rotating speed and the rotating direction of the ball when the ball is launched are controlled by setting different rotating speeds of the driving motor (10) on each driving assembly.

3. The belt driven ball training machine of claim 2, wherein: belt drive A subassembly (14) by driving motor (10), driving wheel (6), follow driving wheel (9) greatly, it forms from driving wheel (7) and belt (8) for a short time, driving motor (10) drive driving wheel (6) are rotatory, and then drive belt (8) and follow driving wheel (9) greatly, it moves from driving wheel (7) for a short time, belt (8) drive ball (4) motion, wherein, driving wheel (6), the face of cylinder with belt (8) contact of following driving wheel (9) and little driving wheel (7) greatly is the face that has the circular arc, thereby increase when dragging the ball and the contact surface of ball.

4. The belt driven ball training machine of claim 2, wherein: the belt driving component B (20) consists of a driving motor (10), a main driving wheel (6), a large driven wheel (9), a tension driven wheel (12) and a belt (8); the belt driving component B (20) is matched with the driving wheel component (13) when working; the driving wheel assembly (13) consists of a driving motor (10) and a main driving wheel (6); the driving motor (10) on the belt driving component B (20) drives the main driving wheel (6) to rotate, so that the belt (8) and the large driven wheel (9) are driven to move, and the belt (8) drives the balls (4) to move; meanwhile, a driving motor (10) on a driving wheel assembly (13) drives a main driving wheel (6) to rotate, an auxiliary belt drives a belt (8) on a component B (20) to drive a ball (4) to move along a launching track, wherein the cylindrical surfaces of the main driving wheel (6) and a large driven wheel (9) are surfaces with circular arcs, so that the contact surface with the ball is increased when the ball is dragged.

5. The belt driven ball training machine of claim 2, wherein: a belt drive A component (14), a single belt drive component drive support (15) and a guide groove (16) are arranged on a base of the emission head (1), and a belt drive component fine adjustment support (37) is arranged to complete the emission head (1) formed by the single drive unit (17) of the scheme 1.

6. The belt driven ball training machine of claim 2, wherein: installing two belt driving component A (14) on a base of the transmitting head (1), and then installing a belt driving component fine tuning support (37) and a guide groove (16) to finish the transmitting head (1) consisting of the double driving units (18) of the scheme 2; three belt driving A components (14) are arranged on a base of the launching head (1), and then a belt driving component fine tuning support (37) and a guide groove (16) are arranged to complete the launching head (1) consisting of three driving units (19) of the scheme 2.

7. The belt driven ball training machine of claim 2, wherein: and (3) mounting a belt drive B component (20) and one to two drive wheel components (13) on a belt drive component fine adjustment bracket (37) to finish the transmitting head of the scheme 3.

8. The belt driven ball training machine of claim 1, wherein: the ball conveying control unit (39) consists of a ball dropping pipeline (33), a time control motor (21), a rotating disc (22), a driving chain rod (23), an arc sliding track (24) and a blocking slide sheet (25); the time control is controlled by the rotating speed of a time control motor (21); every time the time control motor (21) rotates for a circle, the rotating disc (22) drives the driving chain rod (23) to move up and down once, the driving chain rod (23) drives the blocking sliding piece (25) to move up and down once in the arc sliding track (24), and only one ball falls into the launching track through the guide groove (16) by moving up and down every time.

9. The belt driven ball training machine of claim 1, wherein: the ball collecting unit (40) consists of a funnel (36), a driven chain rod (26), a guide ring (27) and an input pipeline (35); the whole ball collecting unit (40) and the conveying control unit (39) are quickly and temporarily assembled on site through the matching of the input pipeline (35) of the hopper (36) and the assembling joint part (34); after the assembly is finished, the driven chain rod (26) is connected with the driving chain rod (23) through a blocking slide sheet (25) to drive the guide ring (27) to move up and down; when the guide ring (27) moves up and down, the blockage of multiple balls at the inlet of the input pipeline (35) is pushed away, and only one ball is guided to fall.

10. The belt driven ball training machine of claim 1, wherein: the emitting head bracket (2) adjusts the size of the elevation angle of the emitting head (1) through an angle adjusting motor (31) and can be adjusted within 180 degrees; the chassis (3) of the training machine adjusts the direction of the transmitting head (1) in the horizontal direction through a chassis rotating motor (30), and the direction can be adjusted by 360 degrees; the cooperation between the chassis rotating motor (30) and the rotating chassis (29) can be gears, belts or simply friction; the rotating chassis (29) rotates around the center of the training machine chassis (3).