CN215275688U

CN215275688U - Swing arm baseball pitching machine

Info

Publication number: CN215275688U
Application number: CN202022820051.2U
Authority: CN
Inventors: 郭周建
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-12-24
Anticipated expiration: 2030-11-30

Abstract

The utility model discloses a swing arm baseball pitching machine, which comprises a pitching frame, a pitching mechanism and a pitching device; the service rack is provided with a ball path, a stopping part is arranged on the service rack, and an area to be serviced is formed by the service rack and the ball path; the ball serving mechanism comprises a swing arm and a driving device, and the swing arm performs ball serving actions on a to-be-served area under the control of the driving device; the ball discharging device is provided with a first baffle and a second baffle, the first baffle is abutted against the ball path and is positioned beside the area to be sent, the second baffle is arranged far away from the ball path, the first baffle is provided with a triggering part, the driving device is provided with a contact part, and the contact part touches the triggering part so that the first baffle and the second baffle can be respectively and selectively abutted against the ball path or separated from the ball path; so, through the design of swing arm, drive arrangement and play ball device, utilize drive arrangement drive swing arm to make actual service action, especially, the linkage contact site touches trigger part when drive arrangement drive swing arm service to realize on the baseball gets into the district of waiting to service one by one through the action of first, second baffle, convenient to use.

Description

Swing arm baseball pitching machine

Technical Field

The utility model relates to a pitching machine field technique especially indicates a swing arm baseball pitching machine.

Background

At present, baseball sports are popular with the masses, a pitching machine is used for practice in practice, a person can practice and play balls with the pitching machine of the trainer without a partner, the skill level is effectively improved, and the purpose of exercise is achieved; most of existing baseball pitching machines raise a baseball in situ for pitching, a trainer strikes the baseball aside for practice, the trainer cannot make actual baseball pitching actions, moreover, the baseball to be pitched and the baseball in the fairway are sequentially arranged, so that the baseball to be pitched can easily push and fall the baseball aside when pitching, the trainer needs to fill the baseball on the baseball pitching machine many times, the training time of the trainer is wasted, and the application range is small.

Therefore, a new technical solution is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a swing arm baseball pitching machine, which utilizes a driving device to drive a swing arm to perform actual pitching through the design of the swing arm, the driving device and a pitching device, and especially, the driving device drives the swing arm to perform pitching so that the baseball can enter the waiting pitching area one by one through the actions of the first and second baffles, thereby providing a convenient use.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a swing arm baseball pitching machine comprises a pitching frame, a pitching mechanism and a pitching device, wherein the pitching mechanism and the pitching device are arranged on the pitching frame; wherein: the service rack is provided with a ball path, a stopping part is arranged on the service rack, and a region to be serviced is formed between the service rack and the ball path;

the ball serving mechanism is arranged on the same side with the area to be served, and comprises a swing arm and a driving device which is connected with the swing arm in a driving mode, and the swing arm performs a ball serving action on the area to be served under the control of the driving device;

the ball discharging device is provided with a first baffle and a second baffle which are mutually linked, the first baffle is abutted on the ball path and is positioned beside the area to be sent, the second baffle is arranged far away from the ball path, the first baffle is provided with a trigger part, the driving device is provided with a contact part, and the contact part touches the trigger part so that the first baffle and the second baffle can be respectively and selectively abutted against the ball path or separated from the ball path;

when the driving device drives the swing arm to serve balls, the contact part touches the trigger part, the first baffle moves upwards to be separated from the fairway, the second baffle moves downwards to be abutted against the fairway to stop the movement of baseball on the fairway, and the baseball abutted against the first baffle enters a to-be-served area; the contact part is far away from the trigger part, the first baffle moves downwards to abut against the fairway, and the second baffle moves upwards to be far away from the fairway so that another baseball moves towards the first baffle and abuts against the first baffle.

As a preferable scheme, the driving device includes a first motor, a first gear, a second gear and a chain, the first gear is connected to an output end of the first motor, the second gear is pivoted on the ball serving rack, the swing arm is connected to the second gear, the chain is arranged at peripheries of the first gear and the second gear, the contact portion is arranged at an edge of the second gear and located at an opposite side of the swing arm, and the first motor controls the swing arm to operate and is linked with the contact portion to touch a trigger portion of the ball discharging device, so that the swing arm is linked with the ball discharging device to limit another baseball in a ball waiting area after serving.

As a preferable scheme, a third gear is arranged between the first gear and the second gear, and the third gear is meshed with the upper end of the chain; the third gear is connected with a mounting seat, and the mounting seat is rotatably connected to the pitching frame; still be provided with first elasticity piece that resets, the one end of first elasticity piece that resets acts on the mount pad, and the other end acts on the service rack.

As a preferred scheme, the service rack comprises an upper rack body and a lower rack body, the lower rack body is provided with an upright post which extends upwards, the lower end of the upper rack body is pivoted to the upper end of the upright post, and the swing arm, the driving device and the ball discharging device are all arranged on the upper rack body; and an angle adjusting device for adjusting the angle between the upper frame body and the lower frame body is arranged between the upper frame body and the lower frame body.

As a preferred scheme, angle adjusting device is including the first body of rod and the second body of rod, the lower extreme of the first body of rod is fixed in down on the support body, the hypomere area of the second body of rod is provided with the external screw thread, be provided with the screw hole on the first body of rod, the external screw thread adaptation is located the screw hole, be provided with the regulating part on the second body of rod, the second body of rod is followed the regulation of regulating part and is selectively stretched into the first body of rod downwards or upwards expose in the outside to adjust the distance between support body and the lower support body both rear ends, and then realize adjusting the service angle of swing arm.

As a preferred scheme, still be provided with the second elasticity piece that resets, the upper end of the second body of rod is passed the support body and is extended the setting, the upper end of the second body of rod is provided with the mounting, the second elasticity piece that resets is provided with two, and the both ends that its second elasticity piece that resets act on respectively on mounting, last support body, and the both ends that another second elasticity piece that resets act on respectively on last support body, regulating part.

As a preferred scheme, the baseball bat further comprises a ball frame for placing a baseball, wherein the ball frame is arranged at the upper end of the pitching frame, a ball outlet is formed in the ball frame, and the lane is communicated with the ball outlet of the ball frame.

As a preferable scheme, a ball feeding device is arranged in the ball frame, the ball feeding device comprises a rotary disc and a second motor which is connected with the rotary disc in a driving mode, the ball frame is provided with a groove which extends downwards, the rotary disc is arranged in the groove, the second motor is arranged at the lower end of the ball frame, and the rotary disc is provided with a stirring part used for stirring baseball; and the ball outlet is arranged on the inner end surface of the groove and positioned beside the turntable.

As a preferred scheme, more than two rubber plates which are arranged along the circumferential direction of the rotary table at intervals are arranged on the rotary table, and the shifting part is formed on the rubber plates.

As a preferred scheme, a force adjusting device for adjusting the force of ball serving of the swing arm is arranged on the ball serving rack, the force adjusting device comprises a first seat body, a second seat body and a spring connected between the first seat body and the second seat body, the first seat body, the swing arm and the driving device are pivoted on the ball serving rack through a rotating shaft, an adjusting rod is arranged on the second seat body, an installation part is arranged on the ball serving rack, and the adjusting rod is positioned on the installation part; the adjusting device is characterized in that a positioning piece is further arranged, the positioning piece is fixedly locked on the adjusting rod and abutted to the mounting portion, and the adjusting rod is controlled by the positioning piece to enable the first seat body and the second seat body to be selectively close to or far away from each other so as to adjust the elasticity of the spring and further adjust the ball serving strength.

Compared with the prior art, the utility model has obvious advantages and beneficial effects, concretely speaking, known from the above technical scheme, it is mainly through the design of swing arm, drive arrangement and play ball device, utilize drive arrangement drive swing arm to make actual service action, especially, the linkage contact part touches the trigger part when drive arrangement drive swing arm service to realize that the baseball gets into on waiting to service the district one by one through the action of first, second baffle, structural design is simple, ingenious reasonable, convenient to use, application scope is wide;

secondly, the third gear and the mounting seat are arranged, the third gear is pressed down and held on the chain, the tightness between the chain and the first gear and the tightness between the chain and the second gear are improved, the chain is prevented from falling off from the first gear and the second gear along with the stress when the swing arm serves, the use stability of the driving device is ensured, and meanwhile, the arrangement of the first elastic reset piece is used for keeping the pressing force of the third gear on the chain;

furthermore, the angle adjusting device is arranged, the second rod body can selectively extend downwards into the first rod body or be upwards exposed out of the first rod body along with the adjustment of the first adjusting piece so as to adjust the rear end distance between the upper frame body and the lower frame body, and further the service angle of the swing arm can be adjusted;

and, the setting of ball frame and ball feeding device utilizes the carousel to drive the portion of stirring and rotates in order to stir the baseball in the ball frame, avoids the baseball to pile up and leads to a ball outlet to block up in the ball frame, and, the setting of offset plate has avoided the portion of stirring to cause the mar phenomenon on the surface of baseball.

To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

Fig. 1 is a first perspective view of a first embodiment of the present invention;

fig. 2 is a second perspective view of the first embodiment of the present invention;

fig. 3 is a top view of a first embodiment of the present invention;

fig. 4 is a left side view of the first embodiment of the present invention;

FIG. 5 is an enlarged partial schematic view of FIG. 1;

FIG. 6 is an enlarged partial schematic view of FIG. 2;

fig. 7 is a perspective view of a second embodiment of the present invention;

FIG. 8 is a first partially enlarged schematic view of FIG. 7;

fig. 9 is a second partially enlarged schematic view of fig. 7.

The attached drawings indicate the following:

10. pitching frame 101, waiting pitching area

11. Upper frame body 111, stopper portion

112. Mounting part 12, lower frame

121. Upright column 13 and fairway

14. Angle adjusting device 141 and first rod body

142. Second rod 143 and second elastic reset piece

144. Fixing member 145 and adjusting member

15. Moving wheel 151 and locking member

16. Handle 17 and switch

18. Power connector 20 and service mechanism

21. Swing arm 211 and ball striking unit

22. Drive unit 221, first motor

222. First gear 223 and second gear

224. Chain 225, contact part

23. Third gear 231, mount pad

232. First elastic reset piece 24 and rotating shaft

30. Ball discharging device 31 and first baffle plate

32. Second shutter 33, trigger part

34. Base 35, third elastic restoring member

40. Ball frame 41 and ball feeding device

411. Turntable 412 and a second motor

413. Groove 414, ball outlet

415. Rubber plate 416 and toggle part

50. Dynamics adjusting device 51, first pedestal

511. Clamping piece 512 and clamping groove

513. Connecting piece 52 and second seat body

521. Adjusting rod 522 and nut

53. Spring 531 and spring fixing plate

54. Positioning piece 55, stopper

551. Brake block 56, connecting block.

Detailed Description

Fig. 1 to 9 show two specific structures of two embodiments of the present invention.

A swing arm baseball pitching machine comprises a pitching frame 10, a pitching mechanism 20 and a pitching device 30, wherein the pitching mechanism 20 and the pitching device 30 are arranged on the pitching frame 10; wherein: the service rack 10 is provided with a ball channel 13, a stopping part 111 is arranged on the service rack 10, and a region to be serviced 101 is formed between the stopping part and the ball channel 13;

the service mechanism 20 is arranged on the same side of the area to be serviced 101, the service mechanism 20 comprises a swing arm 21 and a driving device 22 connected to the swing arm 21 in a driving manner, the swing arm 21 is provided with a ball striking part 211, and the swing arm 21 performs service action on the area to be serviced 101 under the control of the driving device 22;

the ball discharging device 30 is provided with a first baffle 31 and a second baffle 32 which are mutually linked, the first baffle 31 is abutted on the ball path 13 and is positioned beside the to-be-sent ball area 101, the second baffle 32 is arranged away from the ball path 13, the first baffle 31 is provided with a trigger part 33, the driving device 22 is provided with a contact part 225, and the contact part 225 touches the trigger part 33 so that the first baffle and the second baffle can be respectively selectively abutted on the ball path 13 or separated from the ball path 13;

when the driving device 22 drives the swing arm 21 to serve a ball, the contact portion 225 touches the trigger portion 33, the first blocking plate 31 moves upward to separate from the lane 13, the second blocking plate 32 moves downward to abut against the lane 13 to stop the movement of the baseball on the lane 13, and the baseball abutting against the first blocking plate 31 enters the ball serving area 101; the contact portion 225 is far away from the trigger portion 33, the first blocking plate 31 is displaced downward to abut against the lane 13, and the second blocking plate 32 is displaced upward to be far away from the lane 13, so that another baseball moves toward the first blocking plate 31 and abuts against the first blocking plate 31; so, through the design of swing arm, drive arrangement and play ball device, utilize drive arrangement drive swing arm to make actual service action, especially, the linkage contact site touches trigger part when drive arrangement drive swing arm service to realize on the baseball gets into the district of waiting to service one by one through the action of first, second baffle, convenient to use.

As shown in fig. 1 and 5, the driving device 22 includes a first motor 221, a first gear 222, a second gear 223 and a chain 224, the first gear 222 is connected to an output end of the first motor 221, the second gear 223 is pivotally connected to the service rack 10, the swing arm 21 is connected to the second gear 223, the chain 224 is disposed on peripheries of the first gear 222 and the second gear 223, the contact portion 225 is disposed on an edge of the second gear 223 and is located on an opposite side of the swing arm 21, the first motor 221 controls the swing arm 21 to operate and is linked with the contact portion 225 to touch the trigger portion 33 of the ball discharging device 30, so that the swing arm 21 is linked with the ball discharging device 30 to limit another baseball in the ball waiting area 101 after the ball is sent.

Here, a third gear 23 is provided between the first gear 222 and the second gear 223, and the third gear 23 is engaged with the upper end of the chain 224; moreover, the third gear 23 is connected with a mounting seat 231, and the mounting seat 231 is rotatably connected to the service rack 10; a first elastic reset piece 232 is further arranged, one end of the first elastic reset piece 232 acts on the mounting seat 231, and the other end of the first elastic reset piece 232 acts on the pitching frame 10; so, utilize the third gear to push down to press and hold on the chain, improved the fastening nature between chain and first gear, the second gear, guaranteed drive arrangement's stability in use, simultaneously, first elasticity resets the setting of piece to keep the dynamics that the third gear pushed down the chain.

Furthermore, the service rack 10 includes an upper rack body 11 and a lower rack body 12, the lower rack body 12 has an upright post 121 extending upward, the lower end of the upper rack body 11 is pivoted to the upper end of the upright post 121, and the swing arm 21, the driving device 22 and the ball discharging device 30 are all arranged on the upper rack body 11; and an angle adjusting device 14 for adjusting an angle between the upper frame body 11 and the lower frame body 12 is arranged between the upper frame body 11 and the lower frame body 12.

As shown in fig. 2, 4 and 7, the angle adjusting device 14 includes a first rod 141 and a second rod 142, a lower end of the first rod 141 is fixed on the lower frame 12, an external thread is disposed in a lower section area of the second rod 142, a threaded hole is disposed on the first rod 141, the external thread is adapted to be positioned in the threaded hole, an adjusting member 145 is disposed on the second rod 142, and the second rod 142 selectively extends downward into the first rod 141 or is exposed outward along with the adjustment of the adjusting member 145 to adjust a distance between rear ends of the upper frame 11 and the lower frame 12, so as to adjust a ball-serving angle of the swing arm 21; a second elastic reset piece 143 is further provided, the upper end of the second rod 142 passes through the upper frame body 11 to extend, the upper end of the second rod 142 is provided with a fixing piece 144, two second elastic reset pieces 143 are provided, two ends of one second elastic reset piece 143 respectively act on the fixing piece 144 and the upper frame body 10, and two ends of the other second elastic reset piece 143 respectively act on the upper frame body 10 and the adjusting piece 145; so, utilize the second body of rod to follow the regulation of first regulating part selectively downwardly extending into the first body of rod or upwards expose in the outside to the rear end distance between regulation upper ledge body and the lower frame body, and then realize adjusting the service angle of swing arm, simultaneously, the setting of second elasticity piece that resets, in order to realize absorbing effect, the holistic stability of baseball service robot when having guaranteed swing arm service.

Preferably, the ball discharging device 30 includes a base 34, the first blocking plate 31 and the second blocking plate 32 are rotatably disposed on the base 34, a third elastic resetting member 35 is disposed on the second blocking plate 32, two ends of the third elastic resetting member 35 respectively act on the base 34 and the second blocking plate 32, and the third elastic resetting member 35 is utilized to reset both the first blocking plate 31 and the second blocking plate 32.

The ball frame 40 for placing baseball is further included, the ball frame 40 is arranged at the upper end of the pitching frame 10, a ball outlet 414 is formed in the ball frame 40, and the lane 13 is communicated with the ball outlet 414 of the ball frame 40; here, a ball feeding device 41 is arranged in the ball frame 40, the ball feeding device 41 includes a rotary disc 411 and a second motor 412 which is connected to the rotary disc 411 in a driving manner, the ball frame 40 is provided with a groove 413 which extends downwards, the rotary disc 411 is arranged in the groove 413, the second motor 412 is arranged at the lower end of the ball frame 40, and the rotary disc 411 is provided with a poking part 416 for stirring baseball; the ball outlet 414 is arranged on the inner end surface of the groove 413 and is located beside the turntable 411; preferably, more than two rubber plates 415 are arranged on the rotating disc 411 at intervals along the circumferential direction of the rotating disc 411, and the poking part 416 is formed on the rubber plates 415; so, utilize the carousel to drive the portion of stirring and rotate in order to stir the baseball in the ball frame, avoid the baseball to pile up and lead to a ball mouth to block up in the ball frame, and, the setting of offset plate has avoided the portion of stirring to cause the mar phenomenon on the surface of baseball.

Furthermore, a force adjusting device 50 for adjusting the force for swinging the arm to serve the ball is arranged on the service rack 10, the force adjusting device 50 comprises a first seat body 51, a second seat body 52 and a spring 53 connected between the first seat body 51 and the second seat body 52, the first seat body 51, the swinging arm 21 and the driving device 22 are pivoted on the service rack 10 through a rotating shaft 24, the second seat body 52 is provided with an adjusting rod 521, the service rack 10 is provided with an installation part 112, and the adjusting rod 521 is positioned on the installation part 112; the adjusting device is further provided with a positioning element 54, the positioning element 54 is fixedly locked on the adjusting rod 521 and abuts against the mounting part 112, and the adjusting rod 521 is controlled by the positioning element 54 to enable the first seat body 51 and the second seat body 52 to be selectively close to or far away from each other so as to adjust the elastic force of the spring 53, thereby realizing adjustment of the ball-serving force; preferably, both ends of the spring 53 are provided with spring fixing plates 531 and are fixedly connected to the corresponding first and second seat bodies 51 and 52, respectively.

As shown in fig. 2, 4, 6, and 8, the first fastening structure 51 is provided with a clamping member 511 extending transversely, the clamping member 511 is provided with a clamping groove 512 with an opening at a front end, the rotating shaft 24 passes through the first fastening structure 51 and is limited in the clamping groove 512, and the spring 53 is connected to the clamping member 511 and is located at a rear side of the clamping groove 512; a connecting piece 513 is further arranged, and the connecting piece 513 is connected to the front end of the clamping groove 512 from top to bottom so as to realize the tight fit connection between the rotating shaft 24 and the clamping piece 511; here, the first seat 51 is a disc structure, the ball serving stand 10 is provided with a limiting member 55, the limiting member 55 has an arc surface matching the outer periphery of the first seat 51, and the arc surface is provided with a brake block 551.

Here, the adjusting rod 521 is a threaded rod, and the positioning member 54 is provided with an internal threaded hole matched with the threaded rod, and the internal threaded hole is adapted to be positioned on the threaded rod; a nut 522 is further provided, and the nut 522 is disposed on the adjusting rod 521 and abuts against the positioning member 54.

As shown in fig. 2, in the first embodiment, one spring 53 is provided, and the spring fixing plates 531 at two ends of the spring 53 are fixedly connected to the corresponding first seat 51 and the corresponding second seat 52.

As shown in fig. 7, in the second embodiment, two springs 53 are provided, the spring fixing plates 531 at two ends of the two springs 53 are connected through the connecting block 56, the two springs 53 are arranged on the connecting block 56 in a left-right spacing manner, and the connecting block 56 is respectively and fixedly connected to the corresponding first seat 51 and the second seat 52, so as to improve the service speed and the service distance of the swing arm.

The four-wheel-type pitching machine also comprises four moving wheels 15, wherein the four moving wheels 15 are respectively arranged corresponding to the four corners of the lower end of the pitching frame 10, and the pitching frame 10 is provided with locking pieces 151 for locking the moving wheels 15 to move corresponding to the moving wheels 15; and, a handle 16 is arranged on the service rack 10 for the user to move the service rack 10 conveniently.

Preferably, a switch 17 is disposed on the pitching frame 10, the switch 17 is connected to a power connector 18, and the switch 17 is connected to the first motor 221 and the second motor 412 respectively.

The utility model is mainly characterized in that the swing arm is driven by the driving device to make actual serve actions through the design of the swing arm, the driving device and the ball discharging device, particularly, the linkage contact part touches the trigger part when the driving device drives the swing arm to serve balls, so that the baseball can enter a to-be-served area one by one through the actions of the first baffle and the second baffle, the structural design is simple, the operation is ingenious and reasonable, the use is convenient, and the application range is wide;

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a swing arm baseball service robot which characterized in that: comprises a service rack, a service mechanism and a ball discharging device, wherein the service mechanism and the ball discharging device are arranged on the service rack; wherein: the service rack is provided with a ball path, a stopping part is arranged on the service rack, and a region to be serviced is formed between the service rack and the ball path;

2. The swing arm baseball pitching machine of claim 1, wherein: the driving device comprises a first motor, a first gear, a second gear and a chain, the first gear is connected to the output end of the first motor, the second gear is pivoted on the ball serving rack, the swing arm is connected to the second gear, the chain is arranged on the peripheries of the first gear and the second gear, the contact part is arranged on the edge of the second gear and located on the opposite side of the swing arm, and the first motor controls the swing arm to operate and is linked with the contact part to touch the triggering part of the ball discharging device, so that the swing arm is linked with the ball discharging device after serving a ball to limit another baseball in a ball waiting area.

3. The swing arm baseball pitching machine of claim 2, wherein: a third gear is arranged between the first gear and the second gear and meshed with the upper end of the chain; the third gear is connected with a mounting seat, and the mounting seat is rotatably connected to the pitching frame; still be provided with first elasticity piece that resets, the one end of first elasticity piece that resets acts on the mount pad, and the other end acts on the service rack.

4. The swing arm baseball pitching machine of claim 1, wherein: the pitching frame comprises an upper frame body and a lower frame body, the lower frame body is provided with an upright post which extends upwards, the lower end of the upper frame body is pivoted to the upper end of the upright post, and the swing arm, the driving device and the ball discharging device are all arranged on the upper frame body; and an angle adjusting device for adjusting the angle between the upper frame body and the lower frame body is arranged between the upper frame body and the lower frame body.

5. The swing arm baseball pitching machine of claim 4, wherein: the angle adjusting device comprises a first rod body and a second rod body, the lower end of the first rod body is fixed on the lower frame body, an external thread is arranged in the lower section area of the second rod body, a threaded hole is formed in the first rod body, the external thread is adaptive to and positioned in the threaded hole, an adjusting piece is arranged on the second rod body, and the second rod body can selectively downwards extend into the first rod body or upwards expose out of the second rod body along with the adjustment of the adjusting piece so as to adjust the distance between the rear ends of the upper frame body and the lower frame body and further adjust the ball serving angle of the swing arm.

6. The swing arm baseball pitching machine of claim 5, wherein: still be provided with the second elasticity piece that resets, the upper end of the second body of rod is passed the support body and is extended the setting, the upper end of the second body of rod is provided with the mounting, the second elasticity piece that resets is provided with two, and the both ends that its one of which second elasticity resets act on mounting, last support body respectively, and the both ends that another second elasticity resets act on support body, regulating part respectively.

7. The swing arm baseball pitching machine of claim 5, wherein: the ball frame is arranged at the upper end of the pitching frame, a ball outlet is formed in the ball frame, and the ball channel is communicated with the ball outlet of the ball frame.

8. The swing arm baseball pitching machine of claim 7, wherein: the ball feeding device is arranged in the ball frame and comprises a rotary disc and a second motor which is connected with the rotary disc in a driving mode, the ball frame is provided with a groove which extends downwards, the rotary disc is arranged in the groove, the second motor is arranged at the lower end of the ball frame, and the rotary disc is provided with a stirring part used for stirring baseball; and the ball outlet is arranged on the inner end surface of the groove and positioned beside the turntable.

9. The swing arm baseball pitching machine of claim 8, wherein: the turntable is provided with more than two rubber plates which are arranged at intervals along the circumferential direction of the turntable, and the shifting part is formed on the rubber plates.

10. The swing arm baseball pitching machine of claim 1, wherein: the power adjusting device comprises a first seat body, a second seat body and a spring connected between the first seat body and the second seat body, the first seat body, the swing arm and the driving device are pivoted on the service rack through a rotating shaft, the second seat body is provided with an adjusting rod, the service rack is provided with an installation part, and the adjusting rod is positioned on the installation part; the adjusting device is characterized in that a positioning piece is further arranged, the positioning piece is fixedly locked on the adjusting rod and abutted to the mounting portion, and the adjusting rod is controlled by the positioning piece to enable the first seat body and the second seat body to be selectively close to or far away from each other so as to adjust the elasticity of the spring and further adjust the ball serving strength.