CN205028520U - Table tennis rotation axis full court demonstration appearance - Google Patents

Table tennis rotation axis full court demonstration appearance Download PDF

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Publication number
CN205028520U
CN205028520U CN201520796143.8U CN201520796143U CN205028520U CN 205028520 U CN205028520 U CN 205028520U CN 201520796143 U CN201520796143 U CN 201520796143U CN 205028520 U CN205028520 U CN 205028520U
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CN
China
Prior art keywords
ball
tennis
frame
arc frame
axis
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Expired - Fee Related
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CN201520796143.8U
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Chinese (zh)
Inventor
张兴海
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Yanshan University
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Yanshan University
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Priority to CN201520796143.8U priority Critical patent/CN205028520U/en
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Publication of CN205028520U publication Critical patent/CN205028520U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model relates to sports equipment, the table tennis rotation axis full court demonstration appearance who uses during in particular to table tennis technique theoretical teaching. The main frame of this demonstration appearance comprises base, double -screw bolt, axle sleeve, lower carriage, upper bracket, lateral frame, left arc frame, vertical stroke ball, vertical axis, cross axle, horizontal ball, branch, the axis of ordinates, suitable ball and right arc frame, the flight path of table tennis can be demonstrated to the left arc of this demonstration appearance frame and right arc frame, erects ball, horizontal ball and can be respectively rotates along vertical axis, cross axle and the axis of ordinates in the same direction as the ball, can demonstrate the rotatory circumstances of spheroid from a table end motion to the other end, enables that the sportsman is audio -visual to see that the spheroid is in the table both ends rotation -variance circumstances. Thereby, deepen the sportsman and to the rotatory understanding of table tennis, improve interest in learning, reach the purpose of quick grasp table tennis technique. Adopt the supplementary teaching of the instrument, can make more normal, the science of teaching means, have more convincingly.

Description

Rotational axis of table tennis full court demonstrator
Technical field
The utility model relates to a kind of sports apparatus, the rotational axis of table tennis full court demonstrator particularly used during a kind of table tennis technology theory teaching.
Background technology
In table tennis teaching and training, be understand the universal law of table tennis rotary, analyzed by three turning axles the most basic and sort out, both transverse axis, vertical pivot and the longitudinal axis.But because content is more abstract, student is difficult to the Changing Pattern getting information about various turning axle, especially table tennis produces rotation and flies to the other end and fall to rotating that Changing Pattern is difficult especially to be grasped after platform in billiard table one end.In order to the rotation regulation allowing student better understand table tennis, normal employing demonstration instrument aided education.The applicant have developed experimental demonstration instrument of rotational axis of table tennis 200720138431.X, table tennis coordinate axis demonstrator 201120251509.5 and table tennis strong and weak transformationization demonstrator 201420368781.5 early stage.These instruments serve good booster action to the teaching of table tennis technology theory and training.But in practice principle process, although find that above-mentioned demonstration instrument can demonstrate the universal law of table tennis rotary, but can only demonstrate on side half table top of dais or table tennis table, the other end be flown to from billiard table one end to demonstration spheroid and to fall the rotation variation phenomenon poor effect after platform.
Utility model content
In order to solve the problem, the utility model proposes a kind of rotational axis of table tennis full court demonstrator, time specially in order to Table tennis skill teaching, table tennis table is demonstrated table tennis and moves to other end rotation variation phenomenon from billiard table one end, strengthen sportsman to the understanding of table tennis rotary, can fast understanding and grasp table tennis technology knowwhy at short notice.
The technical scheme that the utility model adopts is: a kind of rotational axis of table tennis full court demonstrator, and this demonstrator main frame is made up of base, stud, axle sleeve, lower carriage, upper bracket, lateral frame, left arc frame, perpendicular ball, vertical pivot, transverse axis, horizontal ball, pole, the longitudinal axis, suitable ball and right arc frame.Wherein, the base of this demonstrator is provided with bar shaped gap, and base upper end is fixedly connected with stud lower end, and stud upper end is fixed on axle sleeve upper end with a big nut after passing the mesopore of big nut and axle sleeve again; Axle sleeve lower end is fixedly connected with four lower carriage lower ends respectively, four lower carriage upper ends are fixedly connected with two lateral frame two ends respectively, axle sleeve upper end is fixedly connected with four upper bracket one end respectively, and four upper bracket other ends are fixedly connected with two lateral frame two ends respectively; Two lateral frame two ends are fixedly connected with right arc frame lower end with left arc frame again; After two transverse axis are each passed through two horizontal ball mesopores, fixed by four primary nuts, two transverse axis two ends are connected by screw with left arc frame and right arc frame two ends respectively; Fixed by four primary nuts after two vertical pivots are each passed through two perpendicular ball mesopores, two vertical pivot lower ends are connected with two jacks of left arc frame upper end respectively; Two pole lower ends are connected with two jacks of right arc frame upper end respectively, and two pole upper ends are fixedly connected with two longitudinal axis rear ends respectively, after two longitudinal axis front ends are each passed through two primary nuts and suitable ball, then are fixed by two primary nuts.
Large bearing is provided with in described axle sleeve.
Described horizontal ball, suitable ball and perpendicular ball inside are equipped with little bearing.
Described left arc frame and right arc frame are respectively equipped with two jacks.
Rotational axis of table tennis full court demonstrator structure is simple, easy to use.The bracket Intermediate Gray gap of this demonstrator, when laying, net can be embedded in the opening position of bracket, and such bracket can be placed in the middle of billiard table.Left arc frame and right arc frame can demonstrate the flight path of table tennis, perpendicular ball, horizontal ball and suitable ball can respectively along vertical pivot, transverse axis and vertical axes, can demonstrate spheroid moves to other end rotational case from billiard table one end, sportsman can be made to see intuitively, and spheroid rotates situation of change at billiard table two ends.Thus, deepen sportsman to the understanding of table tennis rotary, improve learning interest, reach the object grasping table tennis technology fast.Therefore, adopt this instrument aided education, teaching means more specification, science can be made, have more cogency.The application of this demonstrator has practical significance to raising table tennis technology theory teaching effect.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
Fig. 1 three-dimensional simplified schematic diagram of the present utility model;
Fig. 2 is that the A-A of Fig. 1 axle sleeve part is to cut-open view;
Fig. 3 is that the B-B of the horizontal ball portion of Fig. 1 is to cut-open view.
Embodiment
The rotational axis of table tennis full court demonstrator that the utility model proposes adopts following structure, as shown in Figure 1, 2, 3, base 1 upper end of this demonstrator is fixedly connected with stud 2 lower end, and stud upper end is fixed on axle sleeve upper end with a big nut after passing the mesopore of big nut 3 and axle sleeve 4 again; Axle sleeve lower end is fixedly connected with four lower carriage 5 lower ends respectively, four lower carriage upper ends are fixedly connected with two lateral frame 7 two ends respectively, axle sleeve upper end is fixedly connected with four upper bracket 6 one end respectively, and four upper bracket other ends are fixedly connected with two lateral frame two ends respectively; Two lateral frame two ends are fixedly connected with right arc frame 17 lower end with left arc frame 8 again; After two transverse axis 11 are each passed through two horizontal ball 12 mesopores, fixed by four primary nuts 13, two transverse axis two ends are connected by screw with left arc frame and right arc frame two ends respectively; Fixed by four primary nuts after two vertical pivots 10 are each passed through two perpendicular ball 9 mesopores, two vertical pivot lower ends are connected with two jacks of left arc frame upper end respectively; Two pole 14 lower ends are connected with two jacks of right arc frame upper end respectively, and two pole upper ends are fixedly connected with two longitudinal axis 15 rear ends respectively, after two longitudinal axis front ends are each passed through two primary nuts and suitable ball 16, then are fixed by two primary nuts.
Large bearing 18 is provided with in above-mentioned axle sleeve.
Above-mentioned horizontal ball, suitable ball and perpendicular ball inside are equipped with little bearing 19.
Above-mentioned base is provided with bar shaped gap.
In use, this demonstrator is placed on table tennis table, in the bar shaped gap allowing net be embedded on base.Need to rotate left arc frame and right arc frame according to the content of courses, allow left arc frame or right arc frame indicate spheroid heading.Rotate the horizontal ball of billiard table one end respectively, erect ball and along ball, demonstrate spheroid along transverse axis, vertical pivot and vertical axes situation, and the route along arc frame instruction while of rotation in billiard table one end in conjunction with rotation situation explanation spheroid flies to the billiard table other end.Then, utilize the horizontal ball of the billiard table other end, perpendicular ball and fall the rotary state after table top bounce-back along ball demonstration ball.
Example 1: when teaching or training, demonstrate horizontal ball in billiard table one end along transverse axis rotation phenomenon, and explain that transverse axis is by the centre of sphere and the perpendicular axle of table tennis heading.Ball rotates to be top spin before this is axial, and ball rotates to be chop after this is axial.Then, demonstrate horizontal ball in billiard table one end and rotate situation of change, then in conjunction with the left and right arc frame of this instrument, when explanation top spin aloft flies, decline comparatively fast, thus increase camber line curvature, shorten distance, after touching platform, preshoot speed is accelerated, and during flat gear, ball upwards flies.When chop flies, decline slower aloft, thus reduce camber line curvature, extend distance, after touching platform, preshoot speed slows down, and during flat gear, ball runs downwards.
Example 2: when teaching or training, at billiard table one end perpendicular ball of demonstration along vertical pivot rotation phenomenon, and explains that vertical pivot is by the centre of sphere and the perpendicular axle of table top.Ball is turned about this axis as side spin.Take striker as benchmark, ball rotates to be left side spiral left, and ball rotates to be right side spin to the right.Then, rotate situation of change at the perpendicular ball of billiard table other end demonstration, and explain left side spin when flying aloft, deflection to the right, after touching platform, slightly turns right, and during flat gear, bounce-back left obviously.When right side spin aloft flies, deflection left, after touching platform, slightly turns left, and during flat gear, bounce-back to the right obviously.
Example 3: when teaching or training, at the suitable ball of billiard table one end demonstration along longitudinal axis rotation phenomenon, and explains that the longitudinal axis is the axle paralleled with the heading of ball by the centre of sphere.Ball rotates to be running ball in the direction of the clock around this axle, and ball rotates to be inverse spiral around this axle by counter clockwise direction.Then, rotate situation of change in the demonstration of the billiard table other end along ball, and explain running ball when flying aloft, the change of camber line is little, after touching platform, obviously turns right, during flat gear, and the more difficult thrust borrowing ball, thus easily off line.Inverse spiral: after touching platform, obviously turn left, the same conrotatory of other situations.

Claims (1)

1. a rotational axis of table tennis full court demonstrator, is characterized in that: the main frame of this demonstrator is made up of base (1), stud (2), axle sleeve (4), lower carriage (5), upper bracket (6), lateral frame (7), left arc frame (8), perpendicular ball (9), vertical pivot (10), transverse axis (11), horizontal ball (12), pole (14), the longitudinal axis (15), suitable ball (16) and right arc frame (17); Wherein, the base of this demonstrator is provided with bar shaped gap, and base upper end is fixedly connected with stud lower end, and stud upper end is fixed on axle sleeve upper end with a big nut after passing the mesopore of big nut (3) and axle sleeve again; Axle sleeve lower end is fixedly connected with four lower carriage lower ends respectively, four lower carriage upper ends are fixedly connected with two lateral frame two ends respectively, axle sleeve upper end is fixedly connected with four upper bracket one end respectively, and four upper bracket other ends are fixedly connected with two lateral frame two ends respectively; Two lateral frame two ends are fixedly connected with right arc frame lower end with left arc frame again; After two transverse axis are each passed through two horizontal ball mesopores, fixed by four primary nuts (13), two transverse axis two ends are connected by screw with left arc frame and right arc frame two ends respectively; Fixed by four primary nuts after two vertical pivots are each passed through two perpendicular ball mesopores, two vertical pivot lower ends are connected with two jacks of left arc frame upper end respectively; Two pole lower ends are connected with two jacks of right arc frame upper end respectively, and two pole upper ends are fixedly connected with two longitudinal axis rear ends respectively, after two longitudinal axis front ends are each passed through two primary nuts and suitable ball, then are fixed by two primary nuts.
CN201520796143.8U 2015-10-15 2015-10-15 Table tennis rotation axis full court demonstration appearance Expired - Fee Related CN205028520U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520796143.8U CN205028520U (en) 2015-10-15 2015-10-15 Table tennis rotation axis full court demonstration appearance

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Application Number Priority Date Filing Date Title
CN201520796143.8U CN205028520U (en) 2015-10-15 2015-10-15 Table tennis rotation axis full court demonstration appearance

Publications (1)

Publication Number Publication Date
CN205028520U true CN205028520U (en) 2016-02-10

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108159666A (en) * 2018-02-08 2018-06-15 燕山大学 Table tennis rotary drills all-in-one machine
CN112435547A (en) * 2020-11-24 2021-03-02 燕山大学 Table tennis dynamic rotation demonstration instrument

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108159666A (en) * 2018-02-08 2018-06-15 燕山大学 Table tennis rotary drills all-in-one machine
CN112435547A (en) * 2020-11-24 2021-03-02 燕山大学 Table tennis dynamic rotation demonstration instrument

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160210

Termination date: 20161015