CN203519052U - Novel tennis ball specification detection device - Google Patents
Novel tennis ball specification detection device Download PDFInfo
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- CN203519052U CN203519052U CN201320623412.1U CN201320623412U CN203519052U CN 203519052 U CN203519052 U CN 203519052U CN 201320623412 U CN201320623412 U CN 201320623412U CN 203519052 U CN203519052 U CN 203519052U
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Abstract
The utility model discloses a novel tennis ball specification detection device, which comprises a detection table support. The detection table support comprises a base; a lower-end support is arranged on the base; the lower-end support is inserted with one end of an upper-end support; a cross beam is arranged at the other end of the upper-end support; the upper-end support is vertical with the cross beam; a ball-clamping device is arranged on the cross beam; scales are both arranged on the upper-end support and the lower-end support; and a pressure-resisting detection device and an elasticity detection device are arranged on the lower-end support. According to the novel tennis ball specification detection device, dependence on the traditional manufacturer specified method can be overcome, a scientific, rigorous, overall and convenient tennis ball specification detection device can be provided for tennis lovers, and tennis games and training can be ensured to be more scientific and rigorously carried out.
Description
Technical field
The utility model relates to a kind of novel tennis ball specification pick-up unit.
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).When applying the pressure of 18 pounds (8.165 kilograms) on ball, elastic deformation inwardly occurs should be between 0.22 inch (0.559 centimetre) and 0.29 inch (0.737 centimetre), and after compression, the scope of bounce-back deformation should be between 0.315 inch (0.8 centimetre) and 0.425 inch (1.08 centimetres).These two kinds of deformation data should be the mean value obtaining after three axle tests with ball.Difference in each situation between any two data can not be greater than 0.03 inch (0.076 centimetre).
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.
Through retrieval, about the pick-up unit of tennis specification, have no demonstration.
Utility model content
The purpose of this utility model is exactly, in order to address the above problem, to provide a kind of novel tennis ball specification pick-up unit, and it has weight measurement, diameter measurement and elasticity measurement are concentrated in together, advantage simple in structure.
To achieve these goals, the utility model adopts following technical scheme:
A novel tennis ball specification pick-up unit, it comprises monitor station support, and described monitor station support comprises base, and lower end support is installed on base, and one end of lower end support and upper end support is plugged together, and at the other end of upper end support, is provided with crossbeam; Described upper end support and beam vertical, described crossbeam is provided with ball-clamped device, on described upper end support and lower end support, is equipped with scale, and compressive resistance pick-up unit and elastomeric check device are installed on described lower end support.
Described compressive resistance pick-up unit comprises weight backboard and weight, weight backboard is connected with lower end support, weight backboard is provided with chute, clamping heavy punch chute connecting rod in described chute, one end of heavy punch chute connecting rod is connected with weight, weight below is provided with electronic scales, and described chute both sides are provided with rule.
Described elastomeric check device comprises three marker loops and the ball-clamped device being arranged on lower end support, described ball-clamped device comprises ring spring intermediate plate, ring spring intermediate plate utilizes stationary shaft to be fixed on crossbeam, described ring spring intermediate plate both sides are provided with trip bolt, fixing pulling rope on trip bolt, one end of pulling rope is provided with tractive handle.
Described chassis outer side is provided with three horizontal adjustment knob, and described base inner side is also provided with level meter, is provided with level meter calibration bubble in level meter.
Described electronic scales is provided with display screen and drawer.
Described chute both sides are provided with scale.
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.
Described upper end support and lower end support are pegged graft, and utilize upper end support fixed knob to fix.
The utility model is realized following measurement:
1, diameter measurement: utilize weight to do the diameter that vernier is measured tested tennis, by chute both sides scale, whether detected tennis is met to rule request and make science judgment.
Operation steps is as follows:
(1) hand-held weight, makes weight along the chute migration that makes progress, and fully opens (now, electronic scale claims under face and weight along 7 centimetres of left and right of spacing);
(2) will be detected tennis and be placed in electronic scale table top central authorities, and it is remained static;
(3) hand-held weight, makes weight along the downward migration of chute, makes under weight (right cylinder) along the top that moves closer to tested tennis;
(4) observation electronic scale reading changes [weight of qualified tennis should be between 2 ounces (56.7 grams) and 2 and 1/6 ounces (58.5 grams), and when edge does not contact detected tennis under weight, electronic scale reading should be detected tennis original weight];
(5) when the reading generation subtle change of electronic scale weight display screen (this moment, under weight along plane contact on detected tennis along) make weight keep static;
(6) sight line is moved to weight under along parallel position, from the rule of chute both sides, read the diameter data of tested tennis.
(7) the detected tennis of turn, repeats above six steps, reads X-axis, the Y-axis of this detected tennis, the diameter data of Z axis
(8) whether the diameter of detected tennis is met to rule request and make science judgment.The diameter of detected tennis is the qualified ball of using between 6.35～6.67 centimetres.
2, elastomeric check: utilizing is highly the Bracket for Inspection of 100 inches, ball is had by oneself to be fallen, drop on concrete bed after bounce-back gets up, utilize to be highly respectively 53 inches of marker loops and 58 inches of two ring marker circles judge whether tested tennis elasticity meets rule request.
Operation steps is as follows:
(1) concrete bed is placed on ground, place;
(2) repeatedly finely tune three horizontal adjustment knob of concrete bed below, the change in location of the horizontal alignment bubble in eye-level instrument, fine setting repeatedly, until the horizontal alignment bubble of level meter is in level meter centre, thereby realizes concrete bed platform in horizontality;
(3) lower end support is plugged on to (now, lower end support is vertical with concrete bed, and 48 inches of marker loops, 53 inches of marker loops, 58 inches of marker loops are all in horizontality) on concrete bed;
(4) upper end support is plugged on lower end support;
(5) tested tennis is placed on spring clip;
(6); Slowly pull the tractive handle of pulling rope, make detected tennis freely falling body fall (detected tennis can fall along Bracket for Inspection, through three marker loops, falls on concrete bed from top to bottom, and then bounce-back is got up);
(7) tester's sight line remains near marker loop, observes the height reaching after detected tennis rebounds;
(8) utilize three marker loops, to detected tennis 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 }.
3, weight detecting: utilize subsidiary weighing scale device to weigh detected tennis weight, judge whether its weight meets rule request.
Concrete operation step is as follows:
By detected, be placed on effective weighing table top of electronic scale, make ball in metastable state.On electronic scale weight display screen, observe the exact weight (weight demonstration is accurate to " 0.1 gram ") of detected tennis, whether the weight of tested tennis is met to rule request and make science judgment, qualified tennis weight is between 2 ounces (56.7 grams) and 2 and 1/6 ounces (58.5 grams).
4, compressive resistance detect (take be detected tennis weight as 2 ounces be example)
(1) weight weight calibration: weight is stablized and dropped on electronic scale weighing table top, weigh weight weight (due to the friction force effect of chute, the weight reading of weighing may be less than 18 pounds), use a plurality of weight to be respectively 0.1 pound, 0.2 pound, 0.5 pound counterweight, constantly calibration, makes electronic scale display screen show 18 pounds;
(2) weight after calibration is picked up gently, risen 7 centimetres;
(3) will be detected tennis and be positioned on electronic scale weighing table top, and it is remained static;
(4) slowly put down weight, make edge plane under weight move closer to detected tennis top;
(5) observe electronic scale screen data and change [when weight is not pressed onto tennis, screen display should be the original weight of detected tennis, for example: 2 ounces (56.7 grams)];
(6) when moment that electronic scale screen data changes (be weight touch detected tennis top moment), fixing weight, from weight, tennis green diameter value is read with backboard rule in edge;
(7) discharge weight, weight is dropped on detected tennis naturally;
(8) by observing electronic scale screen weights, change, confirm whether detected tennis is subject to the pressure of 18 pounds, [if detected tennis is subject to the pressure of 18 pounds, so, electronic scale screen data should be: tennis original weight with 18 pounds and.For example, detected tennis original weight is 2 ounces, after weight presses naturally, shows that weight should be 18 pounds 2 ounces again (detected tennis has been subject to the pressure of 18 pounds); After if weight presses naturally, weight shows and not to be and now, again with a plurality of counterweights, regulate " tennis original weight with 18 pounds and ", until the reading on display screen be 18 pounds 2 ounces again (that is: tennis original weight with 18 pounds with);
(9) after reading weight and naturally falling and exert pressure, detected tennis ball shape parameter certificate: sight line is remained under weight near plane, along under weight along the corresponding numerical value of observing on weight backboard rule now, and record;
(10) weight is picked up, the detected tennis of rotation, repetitive operation step 2-9, measures the data after the pressure deformation that is detected tennis X, Y, tri-axles of Z;
(11) detected tennis compressive resistance index is made to science judgment: when applying the pressure of 18 pounds (8.165 kilograms) on ball, inwardly elastic deformation occurring should be between 0.22 inch (0.559 centimetre) and 0.29 inch (0.737 centimetre), and deformation data should be the mean value obtaining after three axle tests with ball.
The beneficial effects of the utility model: the utility model has overcome the dependence to traditional " producer specifies method ", for vast tennis fan provides a kind of science, rigorous, comprehensively, tennis specification is carried out pick-up unit easily, clearly whether the detected tennis of judgement meets international < < tennis Regulation G reatT.GreaT.GT > requirement, thereby is tennis tournament and more scientific, rigorous the providing safeguard of training.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present utility model;
Fig. 2 is top structure vertical view cutaway drawing of the present utility model;
Fig. 3 is base partial enlarged drawing of the present utility model;
Fig. 4 is elastomeric check marker loop partial enlarged drawing of the present utility model;
Fig. 5 is tennis weight weighing schematic diagram of the present utility model;
Fig. 6 is tennis diameter measurement schematic diagram of the present utility model;
Fig. 7 is pressure test schematic diagram 1 of the present utility model;
Fig. 8 is pressure test schematic diagram 2 of the present utility model;
Fig. 9 is pressure test schematic diagram 3 of the present utility model;
Figure 10 is weight backboard rule enlarged drawing of the present utility model.
Wherein, 1, crossbeam; 2, pulling rope; 3, tractive handle; 4, weight; 5, detected tennis; 6, electronic scale; 7, lower end support; 8, base; 9, level meter; 10, horizontal adjustment knob; 11, marker loop I; 12, marker loop II; 13, upper end support fixed knob; 14, marker loop III; 15, upper end support; 16, stationary shaft; 17, chute; 18, display screen; 19, drawer; 20,0.1 pound of counterweight; 21,0.2 pound of counterweight; 22,0.5 pound of counterweight; 23, ring spring intermediate plate; 24, weight backboard; 25, upper end support rule; 26, heavy punch chute connecting rod; 27, trip bolt; 28, level meter calibration bubble.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
As shown in Figure 1, a kind of tennis specification pick-up unit, it comprises monitor station support, described monitor station support comprises base 8, lower end support 7 is installed on base 8, and lower end support 7 is plugged together with one end of upper end support 15, at the other end of upper end support 15, is provided with crossbeam 1; Described upper end support 15 is vertical with crossbeam 1, described crossbeam 1 is provided with ball-clamped device, on described upper end support 15 and lower end support 7, be equipped with scale, compressive resistance pick-up unit and elastomeric check device are installed on described lower end support 7, described lower end support 7 is at least 60 inches, and upper end support 15 is at least 40 inches.
As shown in Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, described compressive resistance pick-up unit comprises weight backboard 24 and weight 4, weight backboard 24 is connected with lower end support 7, weight backboard 24 is provided with chute 17, the interior clamping heavy punch chute of described chute 17 connecting rod 26, one end of heavy punch chute connecting rod 26 is connected with weight 4, and heavy punch chute connecting rod 26 drives weight 4 to move up and down in chute 17, and weight 4 belows are provided with electronic scales 6.
As shown in Figure 2, Figure 4 shows, described elastomeric check device comprises marker loop I11, marker loop II12, marker loop III14 and the ball-clamped device being arranged on lower end support 7, described ball-clamped device comprises ring spring intermediate plate 23, ring spring intermediate plate 23 utilizes stationary shaft 16 to be fixed on crossbeam 1, described ring spring intermediate plate 23 both sides are provided with trip bolt 27, fixing pulling rope 2 on trip bolt 27, one end of pulling rope 2 is provided with tractive handle 3.
As shown in Figure 3, described base 8 outsides are provided with three horizontal adjustment knob 10, and described base 8 inner sides are also provided with level meter 9, are provided with level meter calibration bubble 28 in level meter 9.
Described electronic scales 6 is provided with display screen 18 and drawer 19.
Described chute 17 both sides are provided with scale.
Described marker loop comprises the marker loop III14 that is arranged on apart from 48 inches of places of base, be arranged on apart from the marker loop II12 at 53 inches of places of base and be arranged on the marker loop I11 apart from 58 inches of places of base.
Described upper end support 15 and lower end support 7 are pegged graft, and utilize upper end support fixed knob 13 fixing.
1, diameter measurement: utilize weight 4 to do the diameter that vernier is measured tested tennis, by chute 17 both sides scales, whether detected tennis is met to rule request and make science judgment.
Operation steps is as follows:
(1) hand-held weight 4, makes weight 4 along chute 17 upwards migration, fully opens (now, electronic scale claims under face and weight along 7 centimetres of left and right of spacing);
(2) will be detected tennis 5 and be placed in electronic scale 6 table top central authorities, and it is remained static;
(3) hand-held weight 4, makes weight 4 along the downward migration of chute 17, makes weight 4(right cylinder) the lower top along moving closer to detected tennis 5;
(4) observation electronic scale 6 readings change [weight of qualified tennis should be between 2 ounces (56.7 grams) and 2 and 1/6 ounces (58.5 grams), and while not contacting detected tennis 5 on 4 times edges of weight, electronic scale 6 readings should be detected tennis 5 original weights];
(5) when the reading generation subtle change of electronic scale 6 weight display screens (this moment, weight 4 times along plane contact on detected tennis 5 along) make weight 4 keep static;
(6) sight line is moved to weight 4 times along parallel position, from the scale of chute 17 both sides, read the diameter data of tested tennis 5.
(7) the detected tennis 5 of turn, repeats above six steps, reads X-axis, the Y-axis of this detected tennis 5, the diameter data of Z axis
(8) whether the diameter of detected tennis 5 is met to rule request and make science judgment.The diameter of detected tennis 5 is the qualified ball of using between 6.35～6.67 centimetres.
2, elastomeric check: utilizing is highly the Bracket for Inspection of 100 inches, ball is had by oneself to be fallen, drop on concrete base 8 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 5 elasticity meet rule request.
Operation steps is as follows:
(1) concrete bed is placed on ground, place;
(2) repeatedly finely tune three horizontal adjustment knob 10 of concrete bed below, the change in location of the interior level meter calibration of eye-level instrument 9 bubble 28, fine setting repeatedly, until level meter is calibrated bubble 28 in level meter 9 centres, thereby realizes concrete bed platform in horizontality;
(3) lower end support 7 is plugged on to (now, lower end support 7 is vertical with concrete bed, and 48 inches of marker loops, 53 inches of marker loops, 58 inches of marker loops are all in horizontality) on concrete bed;
(4) upper end support 15 is plugged on lower end support 7;
(5) tested tennis 5 is placed on ring spring intermediate plate 23;
(6); Slowly pull the tractive handle 3 of pulling rope 2, make detected tennis 5 freely falling bodies fall that (detected tennis 5 can fall along Bracket for Inspection, through marker loop I11, marker loop II12 and marker loop III14, fall on concrete bed from top to bottom, then bounce-back is got up);
(7) tester's sight line remains near marker loop, observes the height reaching after detected tennis 5 bounce-backs are got up;
(8) utilize three marker loops, to detected tennis 5 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 }.
3, weight detecting: utilize subsidiary weighing scale device to weigh detected tennis 5 weight, judge whether its weight meets rule request.
Concrete operation step is as follows:
Detected tennis 5 is placed on effective weighing table top of electronic scale 6, makes ball in metastable state.On the display screen 18 of electronic scale 6 weight, observe the exact weight (weight demonstration is accurate to " 0.1 gram ") of detected tennis 5, whether the weight of tested tennis 5 is met to rule request and make science judgment, qualified tennis weight is between 2 ounces (56.7 grams) and 2 and 1/6 ounces (58.5 grams).
4, compressive resistance detect (take be detected tennis weight as 2 ounces be example)
(1) weight weight calibration: the stable electronic scale 6 that drops on of weight 4 is weighed on table top, weigh weight weight (due to the friction force effect of chute, weight 4 reading of weighing may be less than 18 pounds), use a plurality of weight to be respectively 21,0.5 pound of counterweight 22 of 20,0.2 pound of counterweight of 0.1 pound of counterweight, constantly calibration, makes electronic scale 6 display screens show 18 pounds;
(2) weight 4 after calibration is picked up gently, risen 7 centimetres;
(3) will be detected tennis 5 and be positioned on electronic scale 6 weighing table tops, and it is remained static;
(4) slowly put down weight 4, make 4 times edge planes of weight move closer to detected tennis 5 tops;
(5) observe electronic scale 6 screen data and change [when weight 4 is not pressed onto tennis, display screen 18 shows it is the original weight of detected tennis 5, for example: 2 ounces (56.7 grams)];
(6) when moment that the display screen eighteen data of electronic scale 6 changes (be weight 4 touch detected tennis 5 top moments), fixedly weight 4, from 4 edges of weight and the scale of chute 17 both sides, read and are detected tennis 5 green diameter values;
(7) discharge weight 4, weight 4 is dropped on detected tennis 5 naturally;
(8) by observing electronic scale 6 display screen 18 weight change, confirm whether detected tennis 5 is subject to the pressure of 18 pounds, [if detected tennis is subject to the pressure of 18 pounds, so, electronic scale 6 display screen eighteen datas should be: tennis original weight with 18 pounds and.For example, detected tennis 5 original weights are 2 ounces, after weight 4 presses naturally, show that weight should be 18 pounds 2 ounces again (detected tennis 5 has been subject to the pressure of 18 pounds); After if weight 4 presses naturally, display screen 18 shows and is not and now, again with a plurality of counterweights, regulate " tennis original weight with 18 pounds and ", until the reading on display screen be 18 pounds 2 ounces again (that is: tennis original weight with 18 pounds with);
(9) after reading weight 4 and naturally falling and exert pressure, detected tennis A5 deformation data: sight line is remained on to weight 4 times near plane, along 4 times edges of weight, observe the corresponding numerical value on weight backboard rule 23 now, and record;
(10) by the subsidiary calibrating weight of weight 4() slowly pick up, the detected tennis A5 of rotation, repetitive operation step 2-9, measures detected X, the Y of tennis A5, the data after the pressure deformation of tri-axles of Z;
(11) detected tennis 5 compressive resistance indexs are made to science judgment: when applying the pressure of 18 pounds (8.165 kilograms) on ball, inwardly elastic deformation occurring should be between 0.22 inch (0.559 centimetre) and 0.29 inch (0.737 centimetre), and deformation data should be the mean value obtaining after three axle tests with ball.
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 (8)
1. a novel tennis ball specification pick-up unit, is characterized in that, it comprises monitor station support, and described monitor station support comprises base, and lower end support is installed on base, and one end of lower end support and upper end support is plugged together, and at the other end of upper end support, is provided with crossbeam; Described upper end support and beam vertical, described crossbeam is provided with ball-clamped device, on described upper end support and lower end support, is equipped with scale, and compressive resistance pick-up unit and elastomeric check device are installed on described lower end support.
2. a kind of novel tennis ball specification pick-up unit as claimed in claim 1, it is characterized in that, described compressive resistance pick-up unit comprises weight backboard and weight, weight backboard is connected with lower end support, weight backboard is provided with chute, clamping heavy punch chute connecting rod in described chute, and one end of heavy punch chute connecting rod is connected with weight, weight below is provided with electronic scales, and described chute both sides are provided with rule.
3. a kind of novel tennis ball specification pick-up unit as claimed in claim 1, it is characterized in that, described elastomeric check device comprises three marker loops and the ball-clamped device being arranged on lower end support, described ball-clamped device comprises ring spring intermediate plate, ring spring intermediate plate utilizes stationary shaft to be fixed on crossbeam, described ring spring intermediate plate both sides are provided with trip bolt, fixing pulling rope on trip bolt, and one end of pulling rope is provided with tractive handle.
4. a kind of novel tennis ball specification pick-up unit as claimed in claim 1, is characterized in that, described chassis outer side is provided with three horizontal adjustment knob, and described base inner side is also provided with level meter, is provided with level meter calibration bubble in level meter.
5. a kind of novel tennis ball specification pick-up unit as claimed in claim 2, is characterized in that, described electronic scales is provided with display screen and drawer.
6. a kind of novel tennis ball specification pick-up unit as claimed in claim 2, is characterized in that, described chute both sides are provided with scale.
7. a kind of novel tennis ball specification pick-up unit as claimed in claim 3, 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.
8. a kind of novel tennis ball specification pick-up unit as claimed in claim 1, is characterized in that, described upper end support and lower end support are pegged graft, and utilizes upper end support fixed knob to fix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320623412.1U CN203519052U (en) | 2013-10-10 | 2013-10-10 | Novel tennis ball specification detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320623412.1U CN203519052U (en) | 2013-10-10 | 2013-10-10 | Novel tennis ball specification detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203519052U true CN203519052U (en) | 2014-04-02 |
Family
ID=50377971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320623412.1U Expired - Fee Related CN203519052U (en) | 2013-10-10 | 2013-10-10 | Novel tennis ball specification detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203519052U (en) |
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2013
- 2013-10-10 CN CN201320623412.1U patent/CN203519052U/en not_active Expired - Fee Related
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| 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 |
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| EXPY | Termination of patent right or utility model |