Automatic ball receiving and serving equipment

Abstract

The invention discloses automatic ball receiving and serving equipment, and belongs to the technical field of physical training equipment. After the ball dispenser is installed on the curtain with the launching opening, after an athlete hits a ball, the ball slides down along the curtain into the ball receiving groove placed below the curtain, and after the ball is received by the ball feeding device, the ball feeding device conveys the ball to the ball dispenser. The ball feeding machine is arranged below the ball serving machine, the mode of supplying balls from bottom to top is adopted, a ball storage basket and a drive plate for ball feeding are omitted, and the overall size is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of sports training equipment, and particularly relates to a device for automatically receiving and serving balls. Background Art

[0002] Existing operation venues mainly use commercially available ball serving machines on the market to serve balls. The balls rebound to the ball receiving frame at the upper end of the serving machine through a curtain, and are recycled into the ball storage frame of the serving machine under the guidance of a slope to complete the cycle. Because commercially available products are used, the serving height is lower than the height of the China Open, and high-speed smash balls cannot be served. In the existing ball recycling scheme, the balls fall into the ball receiving frame after rebounding from the curtain and then enter the ball storage frame of the serving machine. Due to the height limitation of the serving machine, there is a high probability that the user's returned ball will hit the front side of the ball receiving frame, resulting in a reduction in the ball receiving rate and thus reducing the training efficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide a device for automatically receiving and serving balls. By arranging a ball loading machine under the serving machine and adopting the method of supplying balls from bottom to top, the ball storage basket and the dial ball feeding device are removed, the overall volume is reduced, and the training efficiency is improved.

[0004] The present invention is realized by the following technical solutions:

[0005] The present invention is an automatic ball receiving and serving device, including a horizontal tooth dialing device, a serving box and inner side plates: The serving box has a serving port and two side plates. A driving roller is installed between the two side plates, and a second friction wheel is provided on the driving roller. There are two inner side plates, which are connected by a "U" connecting plate between the two inner side plates. A driving roller is installed between the two inner side plates, and a first friction wheel is provided on the driving roller. The inner side plates are installed on the shaft of the driving roller through bearing seats;

[0006] An outlet for the balls is formed between the first friction wheel and the second friction wheel, and a ball hole is opened on the bottom plate of the serving box;

[0007] A ball frame, the middle part of the bottom of the ball frame is recessed inward to form a second motor seat. The ball frame has a ball outlet channel, and the ball outlet channel is connected to the ball hole through a lifting pipe. A guiding ball channel is provided on the ball hole;

[0008] The horizontal tooth dialing device includes a circle of teeth. A motor is installed in the second motor seat. The driving shaft of the motor extends into the ball frame. The driving shaft of the motor is connected to the horizontal tooth dialing device. An arc-shaped ball dialing groove is formed between adjacent teeth, and the ball dialing groove is located above the ball outlet channel.

[0009] Further, the driving roller is a hub motor, and the outer rotor part of the hub motor is coated with a friction surface layer as the second friction wheel and the first friction wheel. Shaft holes are opened on the two side plates of the serving box, and both ends of the driving roller with the second friction wheel are installed in the shaft holes.

[0010] Furthermore, it also includes a base. The guiding lane consists of an upper lane and an arc-shaped guiding cylinder;

[0011] The goal inlet is opened on the base. A bearing is installed at the goal inlet of the base. The inner ring of the bearing is connected to the upper lane. The ball outlet port of the upper lane is provided with an arc-shaped guiding cylinder. The middle parts of the arc-shaped guiding cylinder and the limiting shaft are connected. The bottom plate is installed on the bearing, and the ball hole is communicated with the bearing;

[0012] The limiting shaft is installed on the side plate, and an arc-shaped guiding groove is opened on the inner side plate. The limiting shaft is slidably fitted in the arc-shaped guiding groove;

[0013] The ball outlet port of the arc-shaped guiding cylinder faces the ball outlet.

[0014] Furthermore, a first motor base is installed on the inner surface of the side plate. A second motor is installed on the first motor base. A first driving gear is installed on the output shaft of the second motor. An arc-shaped toothed plate is installed on the inner side plate. The first driving gear meshes with the arc-shaped toothed plate,

[0015] A first motor is installed on the base. A driving gear is arranged at the output shaft end of the first motor. A second driving gear is installed on the outer surface of the ball inlet end of the arc-shaped guiding cylinder. The second driving gear meshes with the driving gear.

[0016] Furthermore, the horizontal tooth-pushing device has a top cap. A circle of tooth-pushing teeth is arranged on the circumferential surface of the top cap. Small bearings are arranged at the ends of the tooth-pushing teeth.

[0017] Furthermore, a ball outlet hole is opened on the side of the ball frame. One end of the lifting pipe is connected to the ball outlet hole of the ball frame through a flange. The ball outlet end of the ball outlet lane is communicated with the ball outlet hole. A bearing is installed at the ball outlet hole of the ball frame.

[0018] Furthermore, the upper port of the ball frame has an outer eaves. A part of the outer eaves extends to form a ball-catching plate. A sensor is arranged at the junction of the tail end of the ball-catching plate and the frame part of the ball frame. An installation plate is arranged at the bottom of the ball frame.

[0019] Furthermore, it also includes a back plate, a ball-collecting ramp and a curtain. The curtain is installed on the frame. A serving hole is opened on the curtain. The ball-collecting ramp has an inclined plate. Two supporting plates with different heights are arranged on both sides of the inclined plate. Side enclosing plates are arranged at both ends of the back plate. A notch is arranged in the middle of the back plate. The curtain is built above the back plate. The ball-collecting ramp is placed below the curtain and against the back plate. The notch is close to the supporting plate with a smaller height.

[0020] Furthermore, it also includes two belt conveyors. The belt conveyors are arranged between the ball-collecting ramp and the back plate. The two belt conveyors are located on both sides of the notch. The conveying direction of the belt conveyors faces the notch.

[0021] The present invention has the following beneficial effects:

[0022] The ball collecting slope of the present invention has an inclined plate to form a drop, so that the tennis balls falling on the ball collecting slope automatically flow to the gap, thereby improving the efficiency of the tennis balls entering the gap. A belt conveyor is arranged between the ball collecting slope and the back plate, forming a setting with high ends and a low middle, so that the tennis balls falling on the ball collecting slope flow smoothly to the gap. Through the setting of the double belt conveyors, the belt conveyors can be set to a corresponding length according to the width of the ball collecting groove, so that there is no limit on the width of the venue lane, and different widths can use belt conveyors of different lengths.

[0023] The ball loading machine drives the horizontal gear shifting device to rotate through the driving device, and the horizontal gear shifting mechanism shifts the tennis ball. The lifting pipe is provided with a goal hole and a ball outlet, so that the tennis ball enters the goal hole and is transported to the ball server through the lifting pipe. The goal hole is provided with an anti-ball jamming device. The tennis ball is transported to the ball outlet in sequence by the horizontal gear shifting mechanism in the lifting pipe. The ball outlet hole of the ball frame is installed with bearings and baffles to prevent the ball from getting stuck. The lifting pipe is provided with a quick disassembly mechanism for easy maintenance and problem solving.

[0024] The ball is supplied from bottom to top, and the ball storage basket and dial for ball feeding are removed. The lower ball entry port is connected to the ball loading mechanism link, which reduces the overall volume. The second friction wheel is fixed, and the ball sent from bottom to top first contacts the second friction wheel. This type of ball feeding link is more continuous and integrated, the ball feeding is controllable, and the stability is high. A first motor and a second motor are provided to adjust the left and right and up and down angles of the ball on the ball launcher.

[0025] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 It is a structural diagram of the ball receiving and serving equipment;

[0028] Figure 2 This is a schematic diagram of the front structure of the ball receiving and serving equipment;

[0029] Figure 3 It is a structural diagram of the ball collecting equipment;

[0030] Figure 4 This is a schematic diagram of the bottom structure of the ball receiving trough;

[0031] Figure 5 Schematic diagram of the structure of the ball loading device;

[0032] Figure 6Schematic diagram of the internal structure of the upper ball feeder;

[0033] Figure 7 Schematic diagram of the bottom structure of the upper ball feeder;

[0034] Figure 8 Schematic diagram of the structure of the ball feeder;

[0035] Figure 9 Bottom view of the ball feeder;

[0036] Figure 10 For Figure 11 Cross-sectional view taken along A-A in

[0037] Figure 11 Schematic diagram of the internal structure of the ball feeder;

[0038] Figure 12 Schematic diagram of the internal structure of the ball feeder and the first motor;

[0039] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0040] 1. Curtain; 2. Ball collection groove; 3. Ball feeder; 4. Upper ball feeder; 5. Bracket; 6. Frame; 101. Ball serving hole; 201. Ball collection ramp; 202. Back plate; 203. Belt conveyor; 204. Notch; 205. Side enclosure; 206. Inclined plate; 301. Ball serving box; 302. Shaft hole; 303. Base; 304. Bearing seat; 305. Inner side plate;

[0040] 306. First friction wheel; 307. Ball inlet; 308. Ball outlet; 309. Upper ball track; 3010. First motor; 3011. "U" connecting plate; 3012. First driving tooth; 3013. Arc-shaped toothed plate; 3014. Second friction wheel; 3015. Limit shaft; 3016. Second motor; 3017. First motor seat; 3018. Arc-shaped guide groove; 3019. Bearing; 3020. Arc-shaped guide cylinder; 3021. Second driving tooth; 401. Ball receiving plate; 402. Inductor; 403. Ball outlet track; 404. Ball frame; 405. Flange; 406. Lifting pipe; 407. Top cap; 408. Small bearing; 409. Poking tooth; 4010. Horizontal poking tooth device; 4011. Second motor seat; 4012. Motor; 4013. Mounting plate; 4014. Bearing. Detailed implementation mode

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0042] In the description of the present invention, it should be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention.

[0043] Please refer to Figures 1-5 As shown, the present invention is a device for automatically receiving and serving balls. The serving device 3 is installed behind the curtain 1 with a launching port. After the athlete hits the ball, the ball slides down along the curtain 1 into the ball receiving groove 2 placed below the curtain 1. After being received by the ball feeding device 4, the ball feeding device 4 conveys the ball to the serving device 3. A serving hole 101 is opened on the curtain 1.

[0044] In addition, a frame should be provided on the back of the curtain 1. A linear slide rail mechanism is provided on the upper frame part of the frame. A curtain board is provided on the sliding part of the linear slide rail mechanism. A small curtain is hung under the curtain board. A shielding opening is opened on the small curtain. The opening of the shielding opening is smaller than the opening of the serving hole 101. By horizontally moving the small curtain, the size of the serving hole 101 of the curtain is effectively controlled, and the probability of hitting the ball into the notch of the serving machine is reduced.

[0045] Specifically, the ball receiving groove 2 is as follows:

[0046] The frame 6 is provided with the curtain 1. The serving port of the serving device 3 faces the serving hole 101. The frame 6 is installed on the back plate 202.

[0047] The ball receiving slope 201 has an inclined plate 206. Two supporting plates with different heights are provided on both sides of the inclined plate 206. Side enclosing plates 205 are provided at both ends of the back plate 202. The ball receiving slope 201 is located in the converging space formed by the back plate 202 and the two side plates 205. The notch 204 is close to the supporting plate with a smaller height. A notch 204 is provided in the middle of the back plate 202.

[0048] In addition, to improve the efficiency of the tennis ball entering the notch 204, a belt conveyor 203 is provided between the ball receiving slope 201 and the back plate 202. The width of the belt conveyor 203 is greater than the diameter of the tennis ball.

[0049] Furthermore, the belt conveyor 203 actively conveys the balls falling on the belt, so that the tennis balls falling into the ball receiving groove smoothly flow to the notch 204.

[0050] Such as Figure 1 、 Figure 2 and Figures 5-7 As shown, the ball feeding device 4:

[0051] The tennis ball at a low position and within the ball collecting groove 2 is lifted and conveyed to the serving device 3 mounted on the bracket 1 through the upper ball device 4. The serving device 3 is at a high position, facilitating the serving device 3 to send out a high ball path, that is, simulating a convenient real smash for athletes.

[0052] Specifically, the upper port of the ball frame 404 has an outer eaves, and a part of the outer eaves extends to form a receiving plate 401. This extension is located at the position where the ball frame 404 is close to the curtain 1. The receiving plate 401 is placed on the outlet port of the ball collecting groove 2. At the junction of the tail end of the receiving plate 401 and the frame part of the ball frame 404, a sensor 402 is provided. The sensor 402 is used to detect whether there is a ball that can enter the ball frame 404, so as to drive the ball upward through the horizontal tooth-pulling device 4010.

[0053] The middle part of the bottom of the ball frame 404 is recessed inward to form a second motor seat 4011. The top of the second motor seat 4011 has a hole. The ball frame 404 has a ball outlet channel 403. The ball outlet channel 403 is located at the bottom between the wall of the ball frame 404 and the second motor seat 401. The radial cross-section of the ball outlet channel 403 is arc-shaped. There is a blocking part on the wall at the outlet of the ball outlet channel 403, so that the ball outlet channel 403 discharges the ball unidirectionally. In addition, a bearing 4014 is installed at the ball outlet hole of the ball frame 404 to prevent the ball from getting stuck.

[0054] The horizontal tooth-pulling device 4010 includes a tooth 409 and a top cap 407. A motor 4012 is installed in the second motor seat 4011. The horizontal tooth-pulling device 4010 is driven by the motor to rotate. The driving shaft of the motor 4012 extends into the ball frame 404. A top cap 407 is provided on the driving shaft of the motor 4012. A circle of teeth 409 is provided on the circumferential surface of the top cap 407. The top cap 407 and the circle of teeth 409 are integrated. An arc-shaped ball-pulling groove is formed between adjacent teeth 409. The ball-pulling groove is located above the ball outlet channel 403. After the tennis ball enters the ball frame 404, it falls into each arc-shaped ball-pulling groove. The ball is clamped by the ball-pulling groove. Then, when the horizontal tooth-pulling device 4010 rotates, the ball-pulling groove pushes the tennis ball to move along the ball outlet direction of the ball outlet channel 403, and the ball outlet speed of the ball feeding machine can be controlled by the rotation speed of the motor 4012.

[0055] Preferably, a small bearing 408 is provided at the end of the tooth 409 to avoid friction and extrusion with the ball during the ball-pulling process of the horizontal tooth-pulling device 4010.

[0056] Furthermore, a lifting pipe 406 is further included. An outlet hole is opened on the side of the ball frame 404. One end of the lifting pipe 406 is connected to the outlet hole of the ball frame 404 through a flange 405. The outlet end of the ball outlet channel 403 communicates with the outlet hole. The other end of the lifting pipe 406 is connected to the inlet port at the bottom of the serving device 3 through a flange 405.

[0057] Further, a mounting plate 4013 is provided at the bottom of the ball frame 404, and bolt fixing holes are provided on the plate of the base 4013.

[0058] Such as Figure 1 , Figure 2 and Figures 8-12 the ball feeder 3 shown in:

[0059] The ball feeder 3 includes a ball-feeding box 301. The ball-feeding box 301 has a ball-feeding port, which appears as an uncovered box shell in Figure 1 . In actual production, holes that do not affect the ball ejection can be reserved on the box shell, so that the ball can be ejected from the obliquely front of the ball-feeding box 301. The ball box 301 is installed on the bracket 5. The ball-feeding box 301 has two side plates, and shaft holes 302 are opened on the side plates. Shaft holes 302 are opened on both side plates of the ball-feeding box 301, and drive rollers are fitted in the shaft holes 302. Second friction wheels 3014 are provided on the drive rollers.

[0060] There are two inner side plates 305. The two inner side plates 305 are connected by a "U" connecting plate 3011. The two inner side plates 305 are located inside the ball-feeding box 301. A drive roller is installed between the two inner side plates 305. A first friction wheel 306 is provided on the drive roller. Bearing seats 304 are provided on the inner side plates 305. The inner side plates 305 are installed on the shaft of the drive roller through the bearing seats 304. Specifically, bearings are installed in the bearing seats 304, and the bearings are fitted on the shaft of the drive roller.

[0061] Among them, the drive roller is a hub motor. The outer rotor part of the hub motor is coated with a friction surface layer as the second friction wheel 3014 and the first friction wheel 306. Preferably, the outer rotor part of the hub motor is coated with a rubber sleeve.

[0062] An outlet 308 is formed between the first friction wheel 306 and the second friction wheel 3014. The first friction wheel 306 and the second friction wheel 3014 eject the conveyed balls.

[0063] When the inner side plate 305 rotates around the drive roller where the second friction wheel 3014 is located as a whole, it is limited by a limiting shaft 3015. Specifically, a limiting shaft 3015 is installed on the side plate, and an arc-shaped guiding groove 3018 is opened on the inner side plate 305. The limiting shaft 3015 is slidably fitted in the arc-shaped guiding groove 3018;

[0064] The drive and installation method of the second motor 3016:

[0065] The first motor base 3017 is installed on the inner surface of the side plate. The second motor 3016 is installed on the first motor base 3017. The first driving gear 3012 is installed on the output shaft of the second motor 3016. The arc-shaped toothed plate 3013 is installed on the inner side plate 305. The first driving gear 3012 meshes with the arc-shaped toothed plate 3013. Powered by the second motor 3016, the first driving gear 3012 drives the arc-shaped toothed plate 3013, so that the inner side plate 305 and the first friction wheel 306 as a whole rotate around the driving roller where the second friction wheel 3014 is located, adjusting the up and down angles of the sphere emission in the ball outlet 308.

[0066] The balls fed from bottom to top first contact the second friction wheel and then the first friction wheel 306. The ball feeding link in this way is more continuous and integral, the ball feeding is controllable, and the stability is high.

[0067] In addition, the adjustment of the serving angle left and right is adjusted by controlling the overall rotation of the serving box 301.

[0068] The goal inlet 307 is opened on the base 303. The bearing 3019 is installed at the goal inlet 307 of the base 303. The inner ring of the bearing 3019 is connected to the upper ball track 309. The arc-shaped guiding cylinder 3020 is arranged at the ball outlet end of the upper ball track 309. The middle part of the arc-shaped guiding cylinder 3020 is connected to the limiting shaft 3015. The serving box 301 has a bottom plate ball hole communicating with the bearing 3019. The bottom plate is installed on the bearing 3019, and the balls are fed upward by the bearing 3019, through the upper ball track 309 to the arc-shaped guiding cylinder 3020. By the way of feeding the balls from bottom to top, the storage basket and the dial ball feeding are removed. The bearing 3019, the upper ball track 309 and the arc-shaped guiding cylinder 3020 constitute the link of the lower goal inlet connecting the upper ball mechanism, reducing the overall volume.

[0069] Furthermore, the first motor 3010 is installed on the base 303. The driving gear is arranged at the output shaft end of the first motor 3010. The second driving gear 3021 is installed on the outer surface of the goal inlet end of the arc-shaped guiding cylinder 3020. The second driving gear 3021 meshes with the driving gear. The bottom plate of the serving box 301 is provided with a hole and is installed on the bearing 3019. In addition, the arc-shaped guiding cylinder 3020 can also be installed with a perforated plate. The hole communicates with the arc-shaped guiding cylinder 3020, and the second driving gear 3021 is arranged on one side of the plate.

[0070] Furthermore, the ball outlet end of the arc-shaped guiding cylinder 3020 faces the ball outlet 308. The arc-shaped guiding cylinder 3020 is connected to the upper ball track 309, and the goal inlet of the upper ball track 309 communicates with the bearing 3019.

[0071] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0072] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An automatic ball receiving and serving device, characterized in that, Comprising: A serving box (301), the serving box (301) having a serving port and two side plates, a driving roller installed between the two side plates, and a second friction wheel (3014) provided on the driving roller. Inner side plates (305), there are two of the inner side plates (305), the two inner side plates (305) are connected by a "U" connecting plate (3011), a driving roller is installed between the two inner side plates (305), a first friction wheel (306) is provided on the driving roller, and the inner side plate (305) is installed on the shaft of the driving roller through a bearing seat (304). An outlet port (308) is formed between the first friction wheel (306) and the second friction wheel (3014), and a ball hole is opened on the bottom plate of the serving box (301). A ball frame (404), the middle of the bottom of the ball frame (404) is recessed inward to form a second motor base (4011), the ball frame (404) has a ball outlet channel (403), the ball outlet channel (403) and the ball hole are connected through a lifting pipe (406), and a guiding ball channel is provided on the ball hole. A horizontal tooth-pushing device (4010), the horizontal tooth-pushing device (4010) includes a circle of tooth-pushing teeth (409), a motor (4012) is installed in the second motor base (4011), the driving shaft of the motor (4012) extends into the ball frame (404), the driving shaft of the motor (4012) is connected to the horizontal tooth-pushing device (4010), an arc-shaped ball-pushing groove is formed between adjacent tooth-pushing teeth (409), and the ball-pushing groove is located above the ball outlet channel (403).

2. The automatic ball receiving and serving device according to claim 1, characterized in that, The driving roller is a hub motor, the outer rotor part of the hub motor is coated with a friction surface layer as the second friction wheel (3014) and the first friction wheel (306), shaft holes (302) are opened on the two side plates of the serving box (301), and both ends of the driving roller with the second friction wheel (3014) are installed in the shaft holes (302).

3. The automatic ball receiving and serving device according to claim 2, characterized in that, It further includes a base (303), and the guiding ball channel is composed of an upper ball channel (309) and an arc-shaped guiding cylinder (3020). A goal inlet (307) opened on the base (303), a bearing (3019) is installed at the goal inlet (307) of the base (303), the inner ring of the bearing (3019) is connected to the upper ball channel (309), an arc-shaped guiding cylinder (3020) is provided at the ball outlet port of the upper ball channel (309), the arc-shaped guiding cylinder (3020) is connected to the middle of a limiting shaft (3015), the bottom plate is installed on the bearing (3019), and the ball hole is communicated with the bearing (3019).

4. An automatic ball receiving and serving device according to claim 3, characterized in that, A limiting shaft (3015) is installed on the side plate, an arc-shaped guiding groove (3018) is opened on the inner side plate (305), and the limiting shaft (3015) is in sliding fit with the arc-shaped guiding groove (3018). The ball outlet port of the arc-shaped guiding cylinder (3020) faces the outlet port (308).

5. The automatic ball receiving and serving device according to claim 4, characterized in that, A first motor base (3017) is installed on the inner surface of the side plate. A second motor (3016) is installed on the first motor base (3017). A first driving gear (3012) is installed on the output shaft of the second motor (3016). An arc-shaped toothed plate (3013) is installed on the inner side plate (305). The first driving gear (3012) meshes with the arc-shaped toothed plate (3013). A first motor (3010) is installed on the base (303). A driving gear is provided at the output shaft end of the first motor (3010). A second driving gear (3021) is installed on the outer surface of the goal end of the arc-shaped guide cylinder (3020). The second driving gear (3021) meshes with the driving gear.

6. An automatic ball receiving and serving device according to any one of claims 1-5, characterized in that, The horizontal tooth-pushing device (4010) has a top cap (407). A circle of tooth-pushing teeth (409) is provided on the circumferential surface of the top cap (407). Small bearings (408) are provided at the ends of the tooth-pushing teeth (409).

7. The automatic ball receiving and serving device according to claim 6, characterized in that, A ball outlet hole is formed in the side of the ball frame (404). One end of the lifting pipe (406) is connected to the ball outlet hole of the ball frame (404) through a flange (405). The ball outlet end of the ball outlet channel (403) communicates with the ball outlet hole. A bearing (4014) is installed at the ball outlet hole of the ball frame (404).

8. An automatic ball receiving and serving device according to claim 7, characterized in that, The upper port of the ball frame (404) has an outer eaves. A part of the outer eaves extends to form a ball receiving plate (401). A sensor (402) is provided at the junction of the tail end of the ball receiving plate (401) and the frame part of the ball frame (404). An installation plate (4013) is provided at the bottom of the ball frame (404).

9. The automatic ball receiving and serving device according to claim 8, characterized in that, It further includes a back plate (202), a ball receiving ramp (201) and a curtain (1). The curtain (1) is installed on the frame (6). A serving hole (101) is formed in the curtain (1). The ball receiving ramp (201) has an inclined plate (206). Two support plates with different heights are provided on both sides of the inclined plate (206). Side enclosing plates (205) are provided at both ends of the back plate (202). A notch (204) is provided in the middle of the back plate (202). The curtain (1) is built above the back plate (202). The ball receiving ramp (201) is placed below the curtain (1) and abuts against the back plate (202). The notch (204) is close to the support plate with a smaller height.

10. The automatic ball receiving and serving device according to claim 9, characterized in that, It further includes two belt conveyors (203). The belt conveyors (203) are arranged between the ball receiving ramp (201) and the back plate (202). The two belt conveyors (203) are located on both sides of the notch (204). The conveying direction of the belt conveyors (203) faces the notch (204).

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