阅读说明：本技术 用于网球发球训练的供球小车 (Ball supply trolley for tennis service training ) 是由 王浩 姜富革 沈光野 李微 吕春双 刘鑫 于 2020-07-20 设计创作，主要内容包括：本发明属于体育训练设备技术领域,具体涉及一种用于网球发球训练的供球小车,包括供球装置和行走小车,供球装置安装在行走小车上；供球装置包括存球筒、底座、底盘；存球筒底部设有主球管和第一斜管、第二斜管、第三斜管和第四斜管,第一斜管、第二斜管、第三斜管和第四斜管与主球管连通；主球管底部为倾斜的溜球管,溜球管的端部设有取球开口,取球开口端部设有挡板；存球筒通过弹簧安装在底座上,底座通过立柱与底盘连接；主球管穿过底盘中间的套座。该供球小车移动方便,转动灵活,通过重力实现网球的递进,多个下落球管和弹簧结构的设计,能够有效地避免卡球,保证网球能够顺畅地下落至取球口,设计合理,专业美观,便于移动,方便实用。(The invention belongs to the technical field of physical training equipment, and particularly relates to a ball supply trolley for tennis serve training, which comprises a ball supply device and a walking trolley, wherein the ball supply device is arranged on the walking trolley; the ball supply device comprises a ball storage cylinder, a base and a chassis; the bottom of the ball storage barrel is provided with a main ball pipe, a first inclined pipe, a second inclined pipe, a third inclined pipe and a fourth inclined pipe, and the first inclined pipe, the second inclined pipe, the third inclined pipe and the fourth inclined pipe are communicated with the main ball pipe; the bottom of the main ball tube is an inclined ball sliding tube, the end part of the ball sliding tube is provided with a ball taking opening, and the end part of the ball taking opening is provided with a baffle; the ball storage barrel is arranged on the base through a spring, and the base is connected with the chassis through an upright post; the main ball pipe passes through the sleeve seat in the middle of the chassis. This supply ball dolly removes conveniently, rotates in a flexible way, realizes going forward one by one of tennis through gravity, and the design of a plurality of whereabouts bulb tubes and spring structure can avoid the card ball effectively, guarantees that the tennis can smoothly fall to getting the ball mouth, reasonable in design, and the specialty is pleasing to the eye, is convenient for remove convenient and practical.)

1. A supply ball dolly that is used for tennis service training which characterized in that: the ball supply trolley comprises a ball supply device (2) and a walking trolley (1), wherein the ball supply device (2) is arranged on the walking trolley (1); the ball supply device (2) comprises a ball storage cylinder (21), a base (32) and a chassis (29); the bottom of the ball storage barrel (21) is provided with a main ball pipe (26), a first inclined pipe (24), a second inclined pipe (25), a third inclined pipe (30) and a fourth inclined pipe (33), and the first inclined pipe (24), the second inclined pipe (25), the third inclined pipe (30) and the fourth inclined pipe (33) are communicated with the main ball pipe (26); the bottom of the main ball tube (26) is an inclined ball sliding tube (27), the end part of the ball sliding tube (27) is provided with a ball taking opening (34), and the end part of the ball taking opening (34) is provided with a baffle (35); the ball storage barrel (21) is arranged on a base (32) through a spring (23), and the base (32) is connected with a chassis (29) through an upright post (31); the main ball tube (26) passes through a sleeve seat (28) in the middle of the chassis (29).

2. A cart for tennis ball serving training as recited in claim 1, wherein: the walking trolley (1) comprises four universal wheels (13), a bottom plate (12) and a mounting frame (11), the universal wheels (13) are mounted at the bottom of the bottom plate (12), the mounting frame (11) is welded on the bottom plate (12), and a mounting hole is formed in a mounting disc on the top end of the mounting frame (11).

3. A cart for tennis ball serving training as recited in claim 1, wherein: the ball inlet at the top ends of the main ball pipe (26), the first inclined pipe (24), the second inclined pipe (25), the third inclined pipe (30) and the fourth inclined pipe (33) is a taper hole, and the ball outlets at the bottom ends of the first inclined pipe (24), the second inclined pipe (25), the third inclined pipe (30) and the fourth inclined pipe (33) are sequentially arranged in the axial direction of the main ball pipe (26).

4. A cart for tennis ball serving training as recited in claim 1, wherein: the included angle between the ball sliding pipe (27) and the horizontal plane is 10-20 degrees, the elbow of the ball sliding pipe (27) is in arc transition, the length of a ball taking opening (34) at the end of the ball sliding pipe is larger than the diameter of a tennis ball and smaller than 1.2 times of the diameter of the tennis ball, the height of the ball taking opening (34) is larger than the radius of the ball sliding pipe (27), and the height of the baffle (35) is larger than the diameter of the ball sliding pipe (27).

5. A cart for tennis ball serving training as recited in claim 1, wherein: the number of the springs (23) is four, the top ends of the springs (23) are fixed on the outer edge (22) of the ball storage barrel (21), the bottom ends of the springs are fixed on the base (32), the base (32) is provided with a pipe passing hole, and the distance between the inner wall of the pipe passing hole and the nearest inclined pipe is not less than 3 cm.

6. A cart for tennis ball serving training as recited in claim 1, wherein: the inner diameter of the sleeve seat (28) is 2-3 times of the outer diameter of the main bulb tube (26), and two ends of the inner diameter are provided with taper holes (36).

7. A ball serving trolley for tennis training as claimed in claim 1, wherein: the chassis (29) is provided with mounting holes, and the chassis (29) is mounted on the walking trolley (1) through bolts.

The technical field is as follows:

the invention belongs to the technical field of sports training equipment, and particularly relates to a ball supply trolley for tennis service training.

Background art:

when a tennis player or a tennis fan carries out service training, or a plurality of tennis balls are put in a pocket of the tennis suit and then taken out from the pocket during service training. Since tennis suits can accommodate only a few tennis balls, it is necessary to frequently load balls into the tennis suit. Or the tennis frame is placed near the serving area, so that the tennis frame is convenient to frequently take and is used for serving training. The tennis frame is inconvenient to move, needs to be lifted and transferred, is neither beautiful nor professional, and influences the effect and quality of service training. Therefore, it is necessary to design a special tennis serving trolley which is convenient to move and attractive and elegant for tennis service training.

The invention content is as follows:

the invention aims to provide a special tennis ball serving trolley which is convenient to move, attractive and elegant, convenient to move and flexible to rotate, tennis balls are advanced by gravity, a plurality of ball falling pipes and a spring structure are designed, ball blocking can be effectively avoided, the tennis balls can be guaranteed to smoothly fall to a ball taking port, and the special tennis ball serving trolley is reasonable in design, professional, attractive, convenient to move, convenient to use and practical.

The technical scheme adopted by the invention is as follows: a ball supply trolley for tennis service training comprises a ball supply device and a walking trolley, wherein the ball supply device is arranged on the walking trolley; the ball supply device comprises a ball storage cylinder, a base and a chassis; the bottom of the ball storage barrel is provided with a main ball pipe, a first inclined pipe, a second inclined pipe, a third inclined pipe and a fourth inclined pipe, and the first inclined pipe, the second inclined pipe, the third inclined pipe and the fourth inclined pipe are communicated with the main ball pipe; the bottom of the main ball tube is an inclined ball sliding tube, the end part of the ball sliding tube is provided with a ball taking opening, and the end part of the ball taking opening is provided with a baffle; the ball storage barrel is arranged on the base through a spring, and the base is connected with the chassis through an upright post; the main ball pipe penetrates through a sleeve seat in the middle of the chassis.

Furthermore, the walking trolley comprises four universal wheels, a bottom plate and a mounting frame, the universal wheels are mounted at the bottom of the bottom plate, the mounting frame is welded on the bottom plate, and a mounting hole is formed in a mounting disc at the top end of the mounting frame.

Furthermore, the ball inlets at the top ends of the main ball tube and the first, second, third and fourth inclined tubes are tapered holes, and the ball outlets at the bottom ends of the first, second, third and fourth inclined tubes are sequentially arranged in the axial direction of the main ball tube (i.e. the four ball outlets are not on the same plane and are staggered up and down).

Furthermore, the included angle between the ball sliding pipe and the horizontal plane is 10-20 degrees, the elbow of the ball sliding pipe is in arc transition, the length of a ball taking opening at the end of the ball sliding pipe is larger than the diameter of a tennis ball and smaller than 1.2 times of the diameter of the tennis ball, the height of the ball taking opening is larger than the radius of the ball sliding pipe, and the height of the baffle is larger than the diameter of the ball sliding pipe.

Furthermore, the number of the springs is four, the top ends of the springs are fixed on the outer edge of the ball storage barrel, the bottom ends of the springs are fixed on the base, the base is provided with a pipe passing hole, and the distance between the inner wall of the pipe passing hole and the nearest inclined pipe is not less than 3 cm.

Furthermore, the inner diameter of the sleeve seat is 2-3 times of the outer diameter of the main ball tube, and two ends of the inner diameter are provided with taper holes.

Furthermore, the chassis is provided with mounting holes and is mounted on the walking trolley through bolts.

Furthermore, the ball storage cylinder, the main ball pipe, the first inclined pipe, the second inclined pipe, the third inclined pipe and the fourth inclined pipe are made of transparent plastic materials.

The invention has the beneficial effects that: the utility model provides a supply ball dolly of special tennis service training of convenient and pleasing to the eye broadside of removal, this supply ball dolly removal is convenient, rotates in a flexible way, realizes going forward one by one of tennis through gravity, and the design of a plurality of whereabouts bulb and spring structure can avoid blocking the ball effectively, guarantees that the tennis can smoothly fall to getting the ball mouth, reasonable in design, and the specialty is pleasing to the eye, is convenient for remove, preparation low cost, convenient and practical.

Description of the drawings:

FIG. 1 is a schematic structural diagram of the first embodiment;

FIG. 2 is a right side view of FIG. 1;

FIG. 3 is a schematic structural diagram of a ball supply device according to an embodiment;

FIG. 4 is a left side view of FIG. 3;

FIG. 5 is a schematic top view of a ball storage barrel according to an embodiment

FIG. 6 is a schematic structural view of a ball chute according to an embodiment;

FIG. 7 is a schematic structural diagram of a socket according to an embodiment.

The specific implementation mode is as follows: