A device for continuously hitting and bouncing tennis balls
A tennis and ground technology, applied in the direction of sports accessories, etc., can solve the problems affecting the continuity of hitting tennis, affecting the effect of hitting tennis, and not being able to hold the racket with both hands to hit tennis, etc.
Inactive Publication Date: 2019-02-01
HEBEI NORMAL UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology
[0002] The coach holds one to four tennis balls in his left hand, throws the tennis balls to the ground one by one and hits them with his right hand when he bounces into the air. Hold the racket and hit the tennis ball; it takes a certain amount of time to take the ball with the left hand, which will affect the continuity of hitting the tennis ball; when the left hand throws the tennis ball to the ground in turn, its force, angle of incidence, and position when it bounces into the air are different. These irregular changes will affect the tennis ball. tennis ball effect
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[0011] With reference to the accompanying drawings, four universally rotatable brake casters 1 are installed under the chassis 10 and placed on the ground 11. The chassis is welded and connected to the column 9. The column is covered with a sliding sleeve 8. The upper and lower positions of the sliding sleeve are positioned by screws 13. The upper end of the sliding sleeve The side is welded to connect the cross bar 12, and the other end of the cross bar is connected with the connecting paddle 6, and the back of the paddle board is welded to connect three identical tennis buckets. Each of the three identical tennis buckets is composed of the following components: four iron wires 5 are welded equidistantly between the upper circle 7 and the lower circle 4 to form a tennis bucket, and the upper end of the tennis wire 3 is held at a right angle on the left and the right angle is held on the right. The tennis wire 2 upper ends are welded and connected below the lower circle. When ...
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A device for continuously beating a tennis ball falling to the ground for rebounding is characterized in that four universally rotatable and braked trundles are installed under a chassis and are arranged on the ground, a connecting column is welded on the chassis and is sleeved with a sliding sleeve, the vertical position of the sliding sleeve is moved, positioning is performed by a screw, a connecting cross rod is welded to the side face of the upper end of the sliding sleeve, the other end of the cross rod is connected with a connecting plate, and three same tennis ball containing buckets are welded and connected behind the connecting plate. A tennis ball containing bucket composed of four iron wires is welded and connected between an upper ring and a lower ring in an equal distance mode, and the upper end of a left right-angle tennis ball supporting iron wire and the upper end of a right right-angle tennis ball supporting iron wire are welded and connected below the lower ring. The device has the advantages that the tennis ball can be beaten with two hands, the time required by taking the ball with the left hand is shortened, according to the rule that a tennis ball beating frame touches the position, falling the ground and rebounding, of the tennis ball, the tennis ball can be continuously beaten, and improvement of a tennis ball beating effect is promoted.
Description
technical field [0001] The application belongs to the field of sports equipment, in particular to a device for continuously hitting ground bounce tennis balls. Background technique [0002] The coach holds one to four tennis balls in his left hand, throws the tennis balls to the ground one by one and hits them with his right hand when he bounces into the air. Hold the racket and hit the tennis ball; it takes a certain amount of time to take the ball with the left hand, which will affect the continuity of hitting the tennis ball; when the left hand throws the tennis ball to the ground in turn, its force, angle of incidence, and position when it bounces into the air are different. These irregular changes will affect the tennis ball. Hit the tennis ball effect. Contents of the invention [0003] In order to better solve the problems in the above-mentioned background technology, the purpose of this application is to provide a device for continuously hitting and bouncing tenni...
Claims
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IPC IPC(8): A63B69/38
Inventor 韩璐张东平刘念禹
Owner HEBEI NORMAL UNIVERSITY OF SCIENCE AND TECHNOLOGY