CN204856996U - Presentation device of university's probability statistics teaching usefulness - Google Patents

Presentation device of university's probability statistics teaching usefulness Download PDF

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Publication number
CN204856996U
CN204856996U CN201520537628.5U CN201520537628U CN204856996U CN 204856996 U CN204856996 U CN 204856996U CN 201520537628 U CN201520537628 U CN 201520537628U CN 204856996 U CN204856996 U CN 204856996U
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CN
China
Prior art keywords
hollow cylinder
rotating shaft
university
handle
ball
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
Application number
CN201520537628.5U
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Chinese (zh)
Inventor
王涛
贾诺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Harbin Normal University
Original Assignee
Harbin Normal University
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Filing date
Publication date
Application filed by Harbin Normal University filed Critical Harbin Normal University
Priority to CN201520537628.5U priority Critical patent/CN204856996U/en
Application granted granted Critical
Publication of CN204856996U publication Critical patent/CN204856996U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a presentation device of university's probability statistics teaching usefulness. The utility model relates to a presentation device of university's probability statistics teaching usefulness. The back of hollow cylinder (1) open and to have central through hole (3), central through hole (3) in pass pivot (2), the rear end of pivot (2) connect handle starting drive, pivot (2) pack into in the fixed cover (4), fixed cover (4) linking bridge, the top of hollow cylinder (1) open and to have goal hole (5), the bottom of side periphery of hollow cylinder (1) open and to have a set of ball mouth (6), every play ball mouth (6) connect alone font ball bucket (7) respectively, chevron shape ball bucket (7) connect to be in through dead lever (8) the support on, the front end of pivot (2) connect a set of stirring wing (9). The utility model is used for the probability statistics teaching.

Description

The apparatus for demonstrating of a kind of university Teaching Probability Theory and Mathematical Statistics
Technical field
The utility model relates to the apparatus for demonstrating of a kind of university Teaching Probability Theory and Mathematical Statistics.
Background technology
Because the definition of probability statistics is very abstract, only be difficult to allow classmates understand its implication by explanation in the process of teaching, or understanding does not cause obscuring of definition deeply, definition, the theorem of simply testing the understanding probability statistics making classmates deep is utilized in teaching process, what the rudimentary knowledge of classmates was grasped is more sturdy, it is the reason that each teaching person knows, but how can allow experiment instrument and do not take up room and basic role can be played well, and structure is detachable, becomes a teacher's difficult problem.
Summary of the invention
The purpose of this utility model be to provide a kind of utilize the principle of probability statistics to carry out test, help student understand better theorem, definition, the apparatus for demonstrating that easy to use, storage is conveniently a kind of university Teaching Probability Theory and Mathematical Statistics.
above-mentioned object is realized by following technical scheme:
The apparatus for demonstrating of a kind of university Teaching Probability Theory and Mathematical Statistics, its composition comprises: hollow cylinder 1, rotating shaft 2, the back side of described hollow cylinder 1 has central through hole 3, through described rotating shaft 2 in described central through hole 3, the rear end connecting handle starter gear of described rotating shaft 2, described rotating shaft 2 loads in fixed cover 4, described fixed cover 4 connection bracket, the top of described hollow cylinder 1 has goal hole 5, the bottom of the side periphery of described hollow cylinder 1 has one group of ball mouth 6, each described ball mouth 6 connects people's shaped ball bucket 7 respectively, described herringbone ball bucket 7 is connected on described support by fixed bar 8, the front end of described rotating shaft 2 connects one group of stirring wing 9, described stirring wing 9 is 20mm-30mm with the inside surface distance of described hollow cylinder 1, the bottom of the periphery of described hollow cylinder 1 has chute 10, slide plate 11 is loaded in described chute 10, described slide plate 11 coordinates described ball mouth 6 to use, the right-hand end of the outer circumference surface of described hollow cylinder 1 has and controls chute 12, slide handle 13 is loaded in described control chute 12, described slide plate 11 has one group of port 14, described port 14 coordinates described ball mouth 6 to use.
The apparatus for demonstrating of described a kind of university Teaching Probability Theory and Mathematical Statistics, described handle starter gear comprises handle 15, and described handle 15 connects Z-shaped connecting link 16, and described Z-shaped connecting link 16 connects the rear end of described rotating shaft 2.
The apparatus for demonstrating of described a kind of university Teaching Probability Theory and Mathematical Statistics, described support comprises support under casing 17, the top cover 18 of described support under casing 17 has cap recess 19, the bottom of supporting leg 20 is loaded in described cap recess 19, the hollow cylinder 1 described in the connection of top of described supporting leg 20, described supporting leg 20 connects described herringbone ball bucket 7, described supporting leg 20 connects described fixed cover 4.
beneficial effect:
1. herringbone ball bucket of the present utility model coordinates ball mouth to use, and makes the probability of experiment article random random again, reaches definitely random effect, make experiment more objective.
2. handle starter gear of the present utility model can need to adjust speed according to field research, and duration, makes the simple to operate of experiment.
3. support under casing of the present utility model coordinates top cover to use, the parts be connected with hollow cylinder all can be put into when not using supports under casing, ensures that not losing of experiment appliance is not damaged, in use, supporting plane can also be worked as use, experiment appliance be put more stable.
4. stirring wing of the present utility model makes the randomness of test articles more abundant, reaches objective experiment condition.
accompanying drawing illustrates:
Accompanying drawing 1 is structural representation of the present utility model.
Accompanying drawing 2 is left side views of hollow cylinder.
embodiment:
embodiment 1
The apparatus for demonstrating of a kind of university Teaching Probability Theory and Mathematical Statistics, its composition comprises: hollow cylinder 1, rotating shaft 2, the back side of described hollow cylinder 1 has central through hole 3, through described rotating shaft 2 in described central through hole 3, the rear end connecting handle starter gear of described rotating shaft 2, described rotating shaft 2 loads in fixed cover 4, described fixed cover 4 connection bracket, the top of described hollow cylinder 1 has goal hole 5, the bottom of the side periphery of described hollow cylinder 1 has one group of ball mouth 6, each described ball mouth 6 connects people's shaped ball bucket 7 respectively, described herringbone ball bucket 7 is connected on described support by fixed bar 8, the front end of described rotating shaft 2 connects one group of stirring wing 9, described stirring wing 9 is 20mm-30mm with the inside surface distance of described hollow cylinder 1, the bottom of the periphery of described hollow cylinder 1 has chute 10, slide plate 11 is loaded in described chute 10, described slide plate 11 coordinates described ball mouth 6 to use, the right-hand end of the outer circumference surface of described hollow cylinder 1 has and controls chute 12, slide handle 13 is loaded in described control chute 12, described slide plate 11 has one group of port 14, described port 14 coordinates described ball mouth 6 to use.
embodiment 2
The apparatus for demonstrating of a kind of university Teaching Probability Theory and Mathematical Statistics described in embodiment 1, described handle starter gear comprises handle 15, and described handle 15 connects Z-shaped connecting link 16, and described Z-shaped connecting link 16 connects the rear end of described rotating shaft 2.
embodiment 3
The apparatus for demonstrating of a kind of university Teaching Probability Theory and Mathematical Statistics described in embodiment 1, described support comprises support under casing 17, the top cover 18 of described support under casing 17 has cap recess 19, the bottom of supporting leg 20 is loaded in described cap recess 19, the hollow cylinder 1 described in the connection of top of described supporting leg 20, described supporting leg 20 connects described herringbone ball bucket 7, described supporting leg 20 connects described fixed cover 4.
Certainly; above-mentioned explanation is not to restriction of the present utility model; the utility model is also not limited in above-mentioned citing, the change that those skilled in the art make in essential scope of the present utility model, remodeling, interpolation or replacement, also should belong to protection domain of the present utility model.

Claims (3)

1. the apparatus for demonstrating of university's Teaching Probability Theory and Mathematical Statistics, its composition comprises: hollow cylinder (1), rotating shaft (2), it is characterized in that: the back side of described hollow cylinder (1) has central through hole (3), through described rotating shaft (2) in described central through hole (3), the rear end connecting handle starter gear of described rotating shaft (2), described rotating shaft (2) loads in fixed cover (4), described fixed cover (4) connection bracket, the top of described hollow cylinder (1) has goal hole (5), the bottom of the side periphery of described hollow cylinder (1) has one group of ball mouth (6), each described ball mouth (6) connects people's shaped ball bucket (7) respectively, described herringbone ball bucket (7) is connected on described support by fixed bar (8), the front end of described rotating shaft (2) connects one group of stirring wing (9), described stirring wing (9) is 20mm-30mm with the inside surface distance of described hollow cylinder (1), the bottom of the periphery of described hollow cylinder (1) has chute (10), slide plate (11) is loaded in described chute (10), ball mouth (6) described in described slide plate (11) coordinates uses, the right-hand end of the outer circumference surface of described hollow cylinder (1) has and controls chute (12), slide handle (13) is loaded in described control chute (12), described slide plate (11) has one group of port (14), ball mouth (6) described in described port (14) coordinates uses.
2. the apparatus for demonstrating of a kind of university according to claim 1 Teaching Probability Theory and Mathematical Statistics, it is characterized in that: described handle starter gear comprises handle (15), described handle (15) connects Z-shaped connecting link (16), the rear end of the rotating shaft (2) described in described Z-shaped connecting link (16) connects.
3. the apparatus for demonstrating of a kind of university according to claim 1 Teaching Probability Theory and Mathematical Statistics, it is characterized in that: described support comprises support under casing (17), the top cover (18) of described support under casing (17) has cap recess (19), the bottom of supporting leg (20) is loaded in described cap recess (19), the hollow cylinder (1) described in the connection of top of described supporting leg (20), herringbone ball bucket (7) described in the upper connection of described supporting leg (20), the fixed cover (4) described in the upper connection of described supporting leg (20).
CN201520537628.5U 2015-07-23 2015-07-23 Presentation device of university's probability statistics teaching usefulness Expired - Fee Related CN204856996U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520537628.5U CN204856996U (en) 2015-07-23 2015-07-23 Presentation device of university's probability statistics teaching usefulness

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520537628.5U CN204856996U (en) 2015-07-23 2015-07-23 Presentation device of university's probability statistics teaching usefulness

Publications (1)

Publication Number Publication Date
CN204856996U true CN204856996U (en) 2015-12-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520537628.5U Expired - Fee Related CN204856996U (en) 2015-07-23 2015-07-23 Presentation device of university's probability statistics teaching usefulness

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Cited By (2)

* Cited by examiner, † Cited by third party
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
CN109754678A (en) * 2019-02-26 2019-05-14 王玲 A kind of higher mathematics demonstration device for probability

Cited By (2)

* Cited by examiner, † Cited by third party
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
CN109754678A (en) * 2019-02-26 2019-05-14 王玲 A kind of higher mathematics demonstration device for probability

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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: 20151209

Termination date: 20160723