CN203519288U - Infrared-based tennis ball elasticity testing device - Google Patents
Infrared-based tennis ball elasticity testing device Download PDFInfo
- Publication number
- CN203519288U CN203519288U CN201320625395.5U CN201320625395U CN203519288U CN 203519288 U CN203519288 U CN 203519288U CN 201320625395 U CN201320625395 U CN 201320625395U CN 203519288 U CN203519288 U CN 203519288U
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- end support
- tennis
- infrared
- base
- marker loop
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Abstract
The utility model discloses an infrared-based tennis ball elasticity testing device. The device comprises a base; a lower-end support is arranged on the base; an upper-end support is arranged in an inserting mode on the lower-end support; an upper-end support fixing button is arranged at the place where the upper-end support and the lower-end support are connected; a cross beam is arranged at the top end of the upper-end support; one end of the cross beam is provided with a ring spring clip; the ring spring clip is connected with a pulling device; mark rings are arranged on the lower-end support; infrared testers are arranged on the mark rings; and the infrared testers are connected with an upper computer. In comparison with the prior art, dependence on the traditional manufacturer specified method can be overcome, a scientific, rigorous and convenient tennis ball elasticity testing device can be provided for tennis lovers, elasticity of the tested tennis ball can be clearly judged whether to conform to requirements of international tennis rules, tennis games and training can be ensured to be more scientific and rigorously carried out, and the rebound height of the tennis ball can be accurately tested.
Description
Technical field
The utility model relates to a kind of tennis elastomeric check device, relates in particular to a kind of tennis elastomeric check device based on infrared.
Background technology
The tennis rule that International Tennis Federation promulgates explicitly calls for the specification of official ball: circle, has bullet shape.The diameter of ball is 6.35～6.67 centimetres; The weight of ball requires: weight will be between 2 ounces (56.7 grams) and 2 and 1/6 ounces (58.5 grams); The elasticity of ball requires: when the height from 100 inches (254 centimetres) is done the movement of falling object to mattess, the height of bounce-back should be between 53 inches (134.62 centimetres) and 58 inches (147.32 centimetres).
At present, large-scale tennis tournament with ball conventionally use by International Tennis Federation specify manufacturer production, specify brand tennis, for the tennis of basic unit's official ball, non-designated manufacturer production, there is no at present professional pick-up unit.
Utility model content
The purpose of this utility model is exactly, in order to address the above problem, to provide a kind of tennis elastomeric check device based on infrared, and it has effective detection tennis elasticity, for tennis tournament and training provide the advantage of scientific basis.
To achieve these goals, the utility model adopts following technical scheme:
A kind of tennis elastomeric check device based on infrared, it comprises base, lower end support is installed on base, the upper end support of pegging graft on lower end support, at upper end support and lower end support junction, be provided with end support fixed knob, described upper end cantilever tip is provided with crossbeam, one end of crossbeam is provided with ring spring intermediate plate, ring spring intermediate plate is connected with pulling device, on described lower end support, marker loop is installed, on described marker loop, infrared detector is installed, infrared detector is connected with host computer.
Described pulling device comprises pulling rope, and one end of pulling rope is fixed on the both sides of ring spring intermediate plate by trip bolt, and the other end of described pulling rope is connected with tractive handle.
Described ring spring intermediate plate is fixed on crossbeam by stationary shaft.
Described marker loop comprises the marker loop III that is arranged on apart from 48 inches of places of base, be arranged on apart from the marker loop II at 53 inches of places of base and be arranged on the marker loop I apart from 58 inches of places of base, and described marker loop I, marker loop II and marker loop III are all provided with infrared detector.
Three horizontal adjustment knob are installed on the periphery of described base, level meter is also installed on described base, in level meter, be provided with horizontal alignment bubble.
Described upper end support and lower end support are equipped with scale.
The beneficial effects of the utility model: compared with prior art, the present invention has overcome the dependence to traditional " producer specifies method ", for vast tennis fan provides a kind of science, rigorous, tennis elastomeric check device easily, clearly whether the detected tennis elasticity of judgement meets international < < tennis Regulation G reatT.GreaT.GT > requirement, thereby be that tennis tournament is more scientific with training, rigorous provides safeguard, utilize infrared detector accurately to know and detect the height that tested tennis rebounds.
Accompanying drawing explanation
Fig. 1 is one-piece construction figure of the present utility model;
Fig. 2 is the utility model upper end cantilever tip structure vertical view;
Fig. 3 is base partial enlarged drawing.
Wherein, 1. crossbeam, 2. pulling rope, 3. tractive handle, 4. tested tennis, 5. goes up end support, 6. marker loop I, 7. marker loop II, 8. marker loop III, 9. descends end support, 10 bases, 11. horizontal adjustment knob, 12. level meters, 13. horizontal alignment bubbles, 14. trip bolts, 15. ring spring intermediate plates, 16. stationary shaft, end support fixed knob on 17., 18. infrared detectors.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
As Fig. 1, a kind of tennis elastomeric check device based on infrared, it comprises base 10, lower end support 9 is installed on base 10, the upper end support 5 of pegging graft on lower end support 9, at upper end support 5 and lower end support 9 junctions, be provided with end support fixed knob 17, described upper end support 5 tops are provided with crossbeam 1, one end of crossbeam 1 is provided with ring spring intermediate plate 15, ring spring intermediate plate 15 is connected with pulling device, on described lower end support 9, marker loop is installed, infrared detector 18 is installed on described marker loop, infrared detector 18 is connected with host computer.
As shown in Figure 2, described pulling device comprises pulling rope 2, and one end of pulling rope 2 is fixed on the both sides of ring spring intermediate plate 15 by trip bolt 14, and the other end of described pulling rope 2 is connected with tractive handle 3.
Described ring spring intermediate plate 15 is fixed on crossbeam 1 by stationary shaft 16.
Described marker loop comprises the marker loop III8 that is arranged on apart from 48 inches of places of base, be arranged on apart from the marker loop II7 at 53 inches of places of base and be arranged on the marker loop I6 apart from 58 inches of places of base, and described marker loop I6, marker loop II7 and marker loop III8 are provided with infrared detector 18.
As shown in Figure 3, three horizontal adjustment knob 11 are installed on the periphery of described base 10, on described base 10, level meter 12 are also installed, in level meter 12, be provided with horizontal alignment bubble 13.
Described upper end support 5 is provided with scale, and described lower end support 9 is provided with scale, and the length of lower end support 9 is at least 60 inches, and the length of upper end support 5 is at least 40 inches.
Utilize method of carrying out tennis elastomeric check of the present utility model: utilizing is highly the Bracket for Inspection of 100 inches, ball is had by oneself to be fallen, drop on concrete base 10 after bounce-back gets up, utilize to be highly respectively 53 inches and to judge with two ring marker circles of 58 inches whether tested tennis elasticity meets rule request.
Operation steps is as follows:
(1) concrete base 10 is placed on ground, place;
(2) repeatedly finely tune three horizontal adjustment knob 11 of concrete base 10 belows, the change in location of the horizontal alignment bubble 13 in eye-level instrument 12, fine setting repeatedly, until level meter is calibrated bubble 13 in level meter 12 centres, thereby realizes concrete base 10 in horizontality;
(3) lower end support 9 is plugged on concrete base 10 to (now, lower end support 9 is vertical with concrete base 10, and the marker loop I6 of the marker loop III8 of 48 inches, the marker loop II7 of 53 inches and 58 inches is in horizontality);
(4) upper end support 5 is plugged on lower end support 9, in up-down adjustment, end support 5, the scale in observation on end support 5, and making end support 5 and lower end support 9 overall heights is 100 inches, screws immediately end support fixed knob 17;
(5) tested tennis 4 is placed on ring spring intermediate plate 15;
(6); Slowly pull the tractive handle 3 of pulling rope 2, make tested tennis 4 freely falling bodies whereabouts (tested tennis 4 can fall along Bracket for Inspection, through three marker loops, falls on concrete base 10 from top to bottom, and then bounce-back is got up);
(7) infrared detector 18 is recorded the altitude information of tested tennis 4 bounce-backs, and uploads to host computer, carries out data backup.
(8) utilize three marker loops, to tested tennis 4 whether meet rule request make science judgment plains region, the height that qualified tennis has rebounded should be between 53 inches and 58 inches; The qualified tennis in highlands [height above sea level 4000 feet (1219 meters)] rebounds height should be between 48 inches and 53 inches }.
Although above-mentioned, by reference to the accompanying drawings embodiment of the present utility model is described; but the not restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection domain of the present utility model.
Claims (6)
1. the tennis elastomeric check device based on infrared, it is characterized in that, it comprises base, lower end support is installed on base, the upper end support of pegging graft on lower end support, at upper end support and lower end support junction, be provided with end support fixed knob, described upper end cantilever tip is provided with crossbeam, one end of crossbeam is provided with ring spring intermediate plate, ring spring intermediate plate is connected with pulling device, on described lower end support, marker loop is installed, on described marker loop, infrared detector is installed, infrared detector is connected with host computer.
2. the tennis elastomeric check device based on infrared as claimed in claim 1, is characterized in that, described pulling device comprises pulling rope, and one end of pulling rope is fixed on the both sides of ring spring intermediate plate by trip bolt, and the other end of described pulling rope is connected with tractive handle.
3. the tennis elastomeric check device based on infrared as claimed in claim 1, is characterized in that, described ring spring intermediate plate is fixed on crossbeam by stationary shaft.
4. the tennis elastomeric check device based on infrared as claimed in claim 1, it is characterized in that, described marker loop comprises the marker loop III that is arranged on apart from 48 inches of places of base, be arranged on apart from the marker loop II at 53 inches of places of base and be arranged on the marker loop I apart from 58 inches of places of base, and described marker loop I, marker loop II and marker loop III are all provided with infrared detector.
5. the tennis elastomeric check device based on infrared as claimed in claim 1, is characterized in that, three horizontal adjustment knob are installed on the periphery of described base, and level meter is also installed on described base, is provided with horizontal alignment bubble in level meter.
6. the tennis elastomeric check device based on infrared as claimed in claim 1, is characterized in that, described upper end support and lower end support are equipped with scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320625395.5U CN203519288U (en) | 2013-10-10 | 2013-10-10 | Infrared-based tennis ball elasticity testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320625395.5U CN203519288U (en) | 2013-10-10 | 2013-10-10 | Infrared-based tennis ball elasticity testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203519288U true CN203519288U (en) | 2014-04-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320625395.5U Expired - Fee Related CN203519288U (en) | 2013-10-10 | 2013-10-10 | Infrared-based tennis ball elasticity testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203519288U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748798A (en) * | 2015-04-15 | 2015-07-01 | 山东师范大学 | Table tennis specification detecting instrument |
| CN105527187A (en) * | 2015-12-31 | 2016-04-27 | 聊城大学 | A portable football rebound rate detector for a football court |
-
2013
- 2013-10-10 CN CN201320625395.5U patent/CN203519288U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748798A (en) * | 2015-04-15 | 2015-07-01 | 山东师范大学 | Table tennis specification detecting instrument |
| CN105527187A (en) * | 2015-12-31 | 2016-04-27 | 聊城大学 | A portable football rebound rate detector for a football court |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20141010 |
|
| EXPY | Termination of patent right or utility model |