CN204480541U - A kind of equidistant sampling instructional device - Google Patents
A kind of equidistant sampling instructional device Download PDFInfo
- Publication number
- CN204480541U CN204480541U CN201520124817.XU CN201520124817U CN204480541U CN 204480541 U CN204480541 U CN 204480541U CN 201520124817 U CN201520124817 U CN 201520124817U CN 204480541 U CN204480541 U CN 204480541U
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- pipe
- groove
- container
- right cylinder
- rotary electric
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Abstract
The utility model discloses a kind of equidistant sampling instructional device, belong to statistics teaching device.The pipe that this device comprises motor, vertically arranges, and be horizontally set at the right cylinder below pipe; Described cylindrical side is provided with multiple groove, and mercury cut-off is equipped with in the bottom of one of them groove, and sidepiece is equipped with rotary electric magnet; The turning axle of described rotary electric magnet is provided with catch; The output shaft of described motor is connected with the center of circle, a cylindrical bottom surface; Described cylindrical immediately below be provided with the first container, a cylindrical side-lower is provided with second container; The contact that mercury cut-off is crossed by described rotary electromagnetic Tie Tong is connected with power supply.Bead in pipe can equally spaced be extracted out and send in the first container by the utility model automatically, thus automatically completes the work of equidistant sampling, alleviates the work load of teacher.
Description
Technical field
The utility model relates to a kind of equidistant sampling instructional device, belongs to statistics teaching device.
Background technology
Equidistant sampling is a kind of conventional sample mode in statistics, and its concrete grammar is, first by one line for the constituent parts in overall, then extracts a unit every certain interval.On statistics classroom, teacher is in one line on hollow semicanal by the spheroid with not commensurate, then equally spacedly samples to spheroid, and the mode of this artificial sampling is not only easily made mistakes, and when sample size is comparatively large or frequency in sampling is more, the manpower expended is also very considerable.
Utility model content
The utility model, for the problem in background technology, proposes a kind of equidistant sampling instructional device.
The utility model, for overcoming the above problems, adopts following technical scheme:
A kind of equidistant sampling instructional device, the pipe comprise motor, vertically arranging, and be horizontally set at the right cylinder below pipe; Described cylindrical side is provided with multiple groove, and mercury cut-off is equipped with in the bottom of one of them groove, and sidepiece is equipped with rotary electric magnet; The turning axle of described rotary electric magnet is provided with catch; The output shaft of described motor is connected with the center of circle, a cylindrical bottom surface; Described cylindrical immediately below be provided with the first container, a cylindrical side-lower is provided with second container; The contact that mercury cut-off is crossed by described rotary electromagnetic Tie Tong is connected with power supply.
Further, described pipe is transparent round tube, and the diameter of pipe is 30 ~ 40mm.
Further, the degree of depth of described groove is 30 ~ 40mm.
Further, the anglec of rotation of described rotary electric magnet is 90 ~ 180 degree.
Technique effect:
1, the bead in pipe can equally spaced be extracted out and send in the first container by the utility model automatically, thus automatically completes the work of equidistant sampling, alleviates the work load of teacher.
2, the spheroid be sampled and non-sampled spheroid can divide and be placed in different containers, are convenient to carry out keeping to spheroid.
3, the utility model is simple to operate, practical function, has good promotional value.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the constitutional diagram of spheroid when falling into generic grooves.
Fig. 3 is the constitutional diagram of spheroid when falling in second container.
Fig. 4 is the constitutional diagram of spheroid when falling into the groove being provided with mercury cut-off.
Fig. 5 is the constitutional diagram of the groove being provided with mercury cut-off when going to right cylinder side.
Fig. 6 is the constitutional diagram of spheroid when falling in the first container.
Label title in Fig. 1 ~ Fig. 6: 1, pipe; 2, right cylinder; 3, motor; 4, spheroid; 5, groove; 6, mercury cut-off; 7, rotary electric magnet; 8, catch; 9, the first container; 10, second container.
Embodiment
Below in conjunction with accompanying drawing, introduction is in further detail done to the technical solution of the utility model:
Structure of the present utility model as shown in Figure 1, comprises the pipe 1 of motor 3, vertically setting, and is horizontally set at the right cylinder 2 below pipe 1; The side of described right cylinder 2 is provided with multiple groove 5, and mercury cut-off 6 is equipped with in the bottom of one of them groove 5, and sidepiece is equipped with rotary electric magnet 7; The turning axle of described rotary electric magnet 7 is provided with one for blocking groove port catch 8; The output shaft of described motor 3 is connected with the center of circle, a bottom surface of right cylinder 2; Be provided with the first container 9 immediately below described right cylinder 2, a side-lower of right cylinder 2 is provided with second container 10; Described rotary electric magnet 7 is connected with power supply by the contact of mercury cut-off 6.
Described pipe 1 is transparent round tube, and the diameter of pipe 1 is 30 ~ 40mm, and slightly larger than the diameter (30mm) of spheroid 4, multiple spheroid 4 can be in one line in pipe 1.
The degree of depth of described groove 5 is 30 ~ 40mm, and slightly larger than the diameter (30mm) of spheroid 4, each groove 5 only can hold next spheroid 4.
Described mercury cut-off 6 is for detecting groove 5 position: when the groove being provided with mercury cut-off 6 turns to top or the bottom of right cylinder 2, mercury cut-off 6 is in horizontality, the closing of contact of mercury cut-off 6; When the groove being provided with mercury cut-off 6 leaves top or the bottom of right cylinder 2, mercury cut-off 6 is in non-standard state, and the contact of mercury cut-off 6 disconnects.
The anglec of rotation of described rotary electric magnet 7 is 90 ~ 180 degree.In the present embodiment, rotary electric magnet 7 can adopt the TAU5662X of Shanghai Chaocheng Electronics Co., Ltd., and its anglec of rotation is 180 degree.When rotary magnet is energized, the turning axle of rotary magnet can rotate 180 degree, and when after rotary magnet power-off, the turning axle of rotary magnet can anti-turnback.
During sampling, spheroid 4 to be sampled first is put into pipe 1 by teacher, spheroid 4 is in one line in pipe 1, afterwards, motor 3 power supply is connected by teacher again, motor 3 is started working after being energized, and motor 3 output shaft drives right cylinder 2 to rotate, and the groove 5 being provided with mercury cut-off 6 can circulate through pipe 1 lower end successively with other generic grooves 5.When generic grooves 5 is through pipe 1 lower end, a spheroid 4 bottom pipe 1 can fall into generic grooves 5 (as shown in Figure 2), when this groove 5 goes to right cylinder 2 side, spheroid 4 in generic grooves 5 can drop out groove, and falls in the second container 10 being located at right cylinder 2 one side-lower (as shown in Figure 3).When being provided with the groove 5 of mercury cut-off 6 through pipe 1 lower end, mercury cut-off 6 is in horizontality, the closing of contact of mercury cut-off 6, rotary electric magnet 7 and power supply are connected and drive catch 8 to rotate 180 degree, thus make groove port unimpeded, a spheroid 4 bottom pipe 1 can fall into groove 5 (as shown in Figure 4), when this groove goes to right cylinder 2 side, mercury cut-off 6 is in non-standard state, the contact of mercury cut-off 6 disconnects, rotary electric magnet 7 and power supply disconnect and drive the anti-turnback of catch 8, thus groove port is blocked, spheroid 4 cannot leave this groove (as shown in Figure 5), when this groove goes to the bottom of right cylinder 2, mercury cut-off 6 gets back to horizontality again, the closing of contact of mercury cut-off 6, rotary electric magnet 7 and power supply are connected and drive catch 8 to rotate 180 degree, thus make groove port unimpeded, spheroid in groove falls in the first container 9 be located at immediately below right cylinder 2 (as shown in Figure 6).So, as long as motor continues to rotate, the bead in pipe 1 just waits compartment of terrain and fall into the groove 5 being provided with mercury cut-off 6, and is admitted in the first container 9 subsequently, thus automatically completes the work of equidistant sampling.By changing the quantity (such as by the notch sealing label of groove) of generic grooves 5, can the sampling interval be regulated, thus complete the equidistant sampling work of different interval requirement.
Claims (4)
1. an equidistant sampling instructional device, is characterized in that: the pipe (1) comprise motor (3), vertically arranging, and the right cylinder (2) being horizontally set at pipe (1) below; The side of described right cylinder (2) is provided with multiple groove (5), and mercury cut-off (6) is equipped with in the bottom of one of them groove (5), and sidepiece is equipped with rotary electric magnet (7); The turning axle of described rotary electric magnet (7) is provided with catch (8); The output shaft of described motor (3) is connected with the center of circle, a bottom surface of right cylinder (2); Be provided with the first container (9) immediately below described right cylinder (2), a side-lower of right cylinder (2) is provided with second container (10); Described rotary electric magnet (7) is connected with power supply by the contact of mercury cut-off (6).
2. a kind of equidistant sampling instructional device according to claim 1, is characterized in that: described pipe (1) is transparent round tube, the diameter of pipe (1) is 30 ~ 40mm.
3. a kind of equidistant sampling instructional device according to claim 1, is characterized in that: the degree of depth of described groove (5) is 30 ~ 40mm.
4. a kind of equidistant sampling instructional device according to claim 1, is characterized in that: the anglec of rotation of described rotary electric magnet (7) is 90 ~ 180 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520124817.XU CN204480541U (en) | 2015-03-04 | 2015-03-04 | A kind of equidistant sampling instructional device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520124817.XU CN204480541U (en) | 2015-03-04 | 2015-03-04 | A kind of equidistant sampling instructional device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204480541U true CN204480541U (en) | 2015-07-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520124817.XU Expired - Fee Related CN204480541U (en) | 2015-03-04 | 2015-03-04 | A kind of equidistant sampling instructional device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204480541U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105513462A (en) * | 2016-02-16 | 2016-04-20 | 南阳理工学院 | High-precision probability theory and mathematical statistical principle networked demonstration device |
-
2015
- 2015-03-04 CN CN201520124817.XU patent/CN204480541U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105513462A (en) * | 2016-02-16 | 2016-04-20 | 南阳理工学院 | High-precision probability theory and mathematical statistical principle networked demonstration device |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20160304 |