CN205176974U - Random extractor specially for statistics - Google Patents
Random extractor specially for statistics Download PDFInfo
- Publication number
- CN205176974U CN205176974U CN201520927915.7U CN201520927915U CN205176974U CN 205176974 U CN205176974 U CN 205176974U CN 201520927915 U CN201520927915 U CN 201520927915U CN 205176974 U CN205176974 U CN 205176974U
- Authority
- CN
- China
- Prior art keywords
- ball
- breach
- cylinder
- baffle plate
- ball cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a random extractor specially for statistics, including flourishing ball ware, (mixing) shaft, puddler, be equipped with ball inlet on the flourishing ball ware and go out the ball mouth, vertical to having a communicating hollow ball section of thick bamboo about at a ball mouth end, a ball section of thick bamboo is transparent material, and the top is followed to the side of a ball section of thick bamboo, and vertical a ball section of thick bamboo is equipped with the horizontally baffle respectively in the top and the bottom of first breach to having first breach, and ball section of thick bamboo surface is equipped with the horizontally second breach corresponding with the baffle, the baffle other end is to extending and be equipped with to the open connecting rod in first breach both sides outside the first breach, and connecting rod one end is connected with the baffle is articulated, is equipped with vertical decurrent arch on the other end, is equipped with the spring between two connecting rods, and ball section of thick bamboo surface is equipped with and protruding corresponding recess, thereby the baffle is fixed in the recess with the arch knot to realize reciprocating along first breach through gripping the connecting rod. The ball of extraction is observed the back and is put into flourishing ball ware again through the baffle, and simple structure, suitability are stronger.
Description
Technical field
The utility model relates to tutor auxiliary platform articles for use field, specifically relates to that a kind of statistics is special randomly draws device.
Background technology
Sampling is often needed in statistics, one or several is extracted out in a population sample, to calculate corresponding probability scenarios, when sampling in teaching process now, sampling ball is placed in a ball box, shaft in roating sphere case, the ball chosen is taken out from ball mouth, repeatable operation completes sampling, due in the process of sampling, sometimes need the ball be drawn into be reentered into and contain in ball device, sometimes do not need, and the ball be drawn into can only be taken out to be reentered into again and contains in ball device by existing sampler, process is loaded down with trivial details, wastes time.
Utility model content
Technical problem to be solved in the utility model is to provide that a kind of statistics that can be directly reentered into by ball after observing the ball that is drawn in Sheng ball device is special randomly draws device.
For solving the problems of the technologies described above, the utility model provides following technical scheme: a kind of statistics is special randomly draws device, comprise and contain ball device, be placed in the shaft contained in ball device, puddler, the top and bottom of described Sheng ball device is respectively equipped with ball hole and ball mouth, described puddler one end is connected with shaft, the other end extends to be contained outside ball device, ball mouth end bottom Sheng ball device is provided with the ball cylinder of the hollow that about one communicates straight down, described ball cylinder is transparent material, the side of ball cylinder is provided with the first breach straight down along top, described ball cylinder is respectively equipped with the baffle plate of level on the top of the first breach and bottom, described baffle plate one end is corresponding with ball cylinder inwall and level is placed in ball cylinder, described ball cylinder surface is provided with the second breach of the level corresponding with baffle plate, baffle plate puts into by the second breach cylinder of choosing shuttles, the described baffle plate other end extends and is provided with extension outside the first breach, described extension is two connecting links opened to the first breach both sides, described connecting link one end is connected with panel hinge, the other end is provided with projection straight down, spring is provided with between two connecting links, ball cylinder surface is provided with the groove corresponding with the projection on connecting link, described baffle plate is by the projection on connecting link and coordinating between the groove of ball cylinder, thus be fixed on ball cylinder, and realize moving up and down along the first breach by gripping connecting link.
The statistics that the utility model provides is special randomly draws device, is provided with transparent ball cylinder bottom ball mouth, contains in ball cylinder, detached by piece baffle plate of two in ball cylinder by the second breach if do not need the ball of extraction to be reentered into when starting to test; If need ball to place back in, then detach the baffle plate on the first breach top, rotate puddler, the ball of extraction falls in ball cylinder, after the pattern of record ball, is moved up by the baffle plate of bottom along the first breach, is sent back to by ball again and contains in ball device, revision test.
Improve as to the one of technique scheme, described Sheng ball device is that transparent material is made, and the ball cylinder containing ball device and bottom is one-body molded, like this, is more convenient to observe the situation of containing ball in ball device.
The beneficial effect that the utility model compared with prior art has is: ball can not need taking-up can be reentered in Sheng ball cylinder by two pieces of baffle plates in ball cylinder, more adapts to actual conditions during statistical test.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the vertical view of the utility model ball cylinder.
Number in the figure is: 1-ball mouth, 2-ball cylinder, 21-first breach, 22-second breach, 23-groove, 3-baffle plate, 31-connecting link, 32-spring, and 33-is protruding, and 4-contains ball device, 5-ball hole, 6-shaft, 7-puddler.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
In description of the present utility model, it will be appreciated that, term " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, it is only the utility model for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
See figures.1.and.2 known, it is a kind of that statistics is special randomly draws device, comprise and contain ball device 4, be placed in the shaft 6 contained in ball device 4, puddler 7, the top and bottom of described Sheng ball device 4 is respectively equipped with ball hole 5 and ball mouth 1, described puddler 7 one end is connected with shaft 6, the other end extends to be contained outside ball device 4, ball mouth 1 end bottom Sheng ball device 4 is provided with the ball cylinder 2 of the hollow that about one communicates straight down, described ball cylinder 2 is transparent material, the side of ball cylinder 2 is provided with the first breach 21 straight down along top, described ball cylinder 2 is respectively equipped with the baffle plate 3 of level on the top of the first breach 21 and bottom, described baffle plate 3 one end is corresponding with ball cylinder 2 inwall and level is placed in ball cylinder 2, described ball cylinder 2 surface is provided with the second breach 22 of the level corresponding with baffle plate 3, baffle plate 3 puts into ball cylinder 2 by the second breach 22, described baffle plate 3 other end extends and is provided with extension outside the first breach 21, described extension is two connecting links 31 opened to the first breach 21 both sides, described connecting link 31 one end and baffle plate 3 are articulated and connected, the other end is provided with projection 33 straight down, spring 32 is provided with between two connecting links 31, ball cylinder 2 surface is provided with the groove 23 corresponding with the projection 33 on connecting link 31, described baffle plate 3 is by coordinating between the projection 33 on connecting link 31 and the groove 23 of ball cylinder 2, thus be fixed on ball cylinder 2, and realize moving up and down along the first breach 21 by gripping connecting link 31.
When starting to carry out statistical test, containing in ball cylinder 4 when not needing the ball of extraction to be reentered into, by the second breach 22, piece baffle plate of two in ball cylinder 23 being detached; When ball places back in by needs, then detach the baffle plate 3 on the first breach 21 top, rotate puddler 7, the ball extracted falls in ball cylinder 2, after the pattern of record ball, is moved up by the baffle plate 3 of bottom along the first breach 21, ball is sent back to again and contains in ball device 4, revision test.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. a statistics is special randomly draws device, comprise and contain ball device, be placed in the shaft contained in ball device, puddler, the top and bottom of described Sheng ball device is respectively equipped with ball hole and ball mouth, described puddler one end is connected with shaft, the other end extends to be contained outside ball device, it is characterized in that: the ball mouth end bottom Sheng ball device is provided with the ball cylinder of the hollow that about one communicates straight down, described ball cylinder is transparent material, the side of ball cylinder is provided with the first breach straight down along top, described ball cylinder is respectively equipped with the baffle plate of level on the top of the first breach and bottom, described baffle plate one end is corresponding with ball cylinder inwall and level is placed in ball cylinder, described ball cylinder surface is provided with the second breach of the level corresponding with baffle plate, baffle plate puts into by the second breach cylinder of choosing shuttles, the described baffle plate other end extends and is provided with extension outside the first breach, described extension is two connecting links opened to the first breach both sides, described connecting link one end is connected with panel hinge, the other end is provided with projection straight down, spring is provided with between two connecting links, ball cylinder surface is provided with the groove corresponding with the projection on connecting link, described baffle plate is by the projection on connecting link and coordinating between the groove of ball cylinder, thus be fixed in ball cylinder, and realize moving up and down along the first breach by gripping connecting link.
2. statistics according to claim 1 is special randomly draws device, it is characterized in that: described Sheng ball device is that transparent material is made.
3. statistics according to claim 2 is special randomly draws device, it is characterized in that: the ball cylinder of described Sheng ball device and bottom is one-body molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520927915.7U CN205176974U (en) | 2015-11-20 | 2015-11-20 | Random extractor specially for statistics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520927915.7U CN205176974U (en) | 2015-11-20 | 2015-11-20 | Random extractor specially for statistics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205176974U true CN205176974U (en) | 2016-04-20 |
Family
ID=55740936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520927915.7U Expired - Fee Related CN205176974U (en) | 2015-11-20 | 2015-11-20 | Random extractor specially for statistics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205176974U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107680449A (en) * | 2017-11-22 | 2018-02-09 | 黄跃 | A kind of mathematical education probability demonstration equipment |
-
2015
- 2015-11-20 CN CN201520927915.7U patent/CN205176974U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107680449A (en) * | 2017-11-22 | 2018-02-09 | 黄跃 | A kind of mathematical education probability demonstration equipment |
| CN107680449B (en) * | 2017-11-22 | 2019-11-05 | 绍兴君合新材料科技有限公司 | A kind of mathematical education probability demonstration equipment |
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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: 20160420 Termination date: 20161120 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |