Automatic serve device for tennis training

[0020] Example 1

[0021] The embodiment of the present invention provides an automatic ball serving device for tennis training, which includes a ball guiding mechanism, a ball serving mechanism and a steering mechanism; the ball guiding mechanism includes a ball guiding channel 1, and the upper end of the guiding ball channel 1 is provided with a ball receiving tube communicating with the ball 2. The ball guide mechanism is provided with a serving mechanism on the lower side. The serving mechanism includes a serving barrel 8. The goal opening of the serving barrel 8 is connected to the outlet of the guiding channel 1 through a connecting hose 20. The serving barrel 8 is provided with The first pneumatic cylinder 9, the pneumatic telescopic rod of the first pneumatic cylinder 9 is fixedly connected to one end of the push rod 10, the other end of the push rod 10 is fixed with a first slider 11, and the end of the first slider 11 is fixed for pushing The push block 12 of the tennis ball; the ball guide channel 1 is fixed on the support frame 13; the serving barrel 8 is connected with a steering mechanism that drives its rotation. The steering mechanism includes a first connecting rod 14, the middle of the first connecting rod 14 and the support The frame 13 is hinged, the upper end of the first connecting rod 14 is hinged to the tee 8 and the lower end of the first connecting rod 14 is hinged to the second connecting rod 15. The middle of the first connecting rod 14 is fixed with a plate 16 which is connected to the second The pneumatic cylinder 17 and the third pneumatic cylinder 18 are hinged, the pneumatic telescopic rod of the second pneumatic cylinder 17 is hinged with the serving barrel 8, and the pneumatic telescopic rod of the third pneumatic cylinder 18 is hinged with the second connecting rod 15.

[0022] In this embodiment, the serving mechanism is driven by the first cylinder. The telescopic rod of the first cylinder drives the push rod to move forward along the serving barrel. The push rod pushes the ball to move forward along the serving barrel. By adjusting the pushing speed of the first cylinder, it can be changed. The speed at which the ball is pushed forward by the putter can change the firing speed of the ball; there are also a second pneumatic cylinder 17 and a third pneumatic cylinder 18 for driving the ball cylinder, the first connecting rod and the second connecting rod to rotate, achieving Change the serve angle of the tennis ball according to the needs of the trainer to improve the trainer's catching technique.

[0023] Further, the ball guide channel 1 is provided with a pushing mechanism for pushing the tennis ball forward. The pushing mechanism includes a push rod 3, one end of the push rod 3 is fixed with a U-shaped push block 21 for pushing the tennis ball forward, and the other end of the push rod 3 A roller 4 is fixed, and the roller 4 is matched with a cam 5. The side wall of the cam 5 is fixed with a rotating shaft 6, and the rotating shaft 6 is connected with the output shaft of the motor 7.

[0024] In this embodiment, the pushing mechanism uses a cam to push the push rod forward. When the cam rotates, the push rod is pushed to move in the guide ball channel, that is, the ball is pushed to move in the guide ball channel, and the ball is prevented from remaining in the guide ball channel due to friction. The inside cannot enter the inside of the serving barrel. At the same time, a U-shaped push block 21 is fixed at one end of the push rod 3. The U-shaped push block 21 can prevent the ball from falling from the ball receiving tube 2 into the ball guide channel 1 when the ball is not pushed forward. .

[0025] Further, the number of the ball receiving tube 2 is two, which are symmetrically fixed on the upper end of the ball guiding channel 1, and the number of the serving mechanism and the steering mechanism is also two, which are symmetrically arranged at the lower end of the ball guiding channel 1.

[0026] In this embodiment, the number of the ball holding tube 2 is two, and the same cam mechanism is used to drive the push rods on both sides to push the ball forward. At the same time, two ball serving mechanisms and steering mechanisms are also provided, which can satisfy two people's training at the same time.

[0027] Further, the support frame 13 is fixed on the support plate 19, which can improve the stability of the automatic ball serving device.

[0028] Further, the ball guiding channel 1 is a hollow structure, and a goal opening is opened at the upper end; the ball receiving tube 2 is provided with an outlet opening that communicates with the goal opening.

[0029] Further, the ball containing tube 2 has an arc structure.

[0030] The working principle of the present invention:

[0031] When using the tennis training automatic serving device, first put the tennis ball into the ball holding tube 2. Under the action of gravity, the tennis ball falls from the ball outlet of the ball holding tube 2, and from the goal opening of the ball guide channel 1. Enter into the guide ball channel 1, and then start the motor 7 of the pushing mechanism, the motor 7 rotates to drive the cam 5 to rotate, the cam 5 rotates to drive the push rod 3 to slide along the guide ball channel 1, and the push rod 3 drives the U-shaped push block fixed at its end 21 Push the tennis ball into the serving mechanism, and then start the first pneumatic cylinder 9 of the serving mechanism. The pneumatic telescopic rod of the first pneumatic cylinder 9 pushes the putter rod 10 forward, and the pusher rod 10 pushes the first slider 11 forward. The sliding block 11 pushes the push block 12 forward, that is, the launch of the tennis ball is realized, and the tennis ball can be pushed from the serving cylinder;

[0032] When you need to change the launch angle of the tennis ball, you can choose to rotate the second pneumatic cylinder 17 or the third pneumatic cylinder 18 as needed. When the second pneumatic cylinder 17 is activated, the second pneumatic cylinder 17 drives the ball between the ball cylinder 8 and the first connecting rod 14. Relative rotation, because the first connecting rod 14 and the second connecting rod 15 are hinged, the third pneumatic cylinder 18 is activated, and the third pneumatic cylinder 18 drives the second connecting rod 15 to rotate around the first connecting rod 14, which realizes the adjustment of the serve as required Angle to further improve the intensity of training.

[0033] In summary, the present invention provides a tennis training automatic serving device, which is provided with a serving mechanism. The first cylinder drives the putter to advance along the serving barrel, which can change the launch speed of the ball; Need to adjust the angle of serve at will, increase the randomness of practice, and increase the difficulty of practice at the same time, which is conducive to the rapid progress of tennis catching technique.