CN211062296U

CN211062296U - Probability theory and mathematical statistics principle demonstration device

Info

Publication number: CN211062296U
Application number: CN201922217086.4U
Authority: CN
Inventors: 张程
Original assignee: Institute Of Technology East China Jiao Tong University
Current assignee: Institute Of Technology East China Jiao Tong University
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-07-21
Anticipated expiration: 2029-12-11

Abstract

The utility model relates to the technical field of demonstration devices, in particular to a probability theory and mathematical statistics principle demonstration device, which comprises a base, wherein a box body is welded on the top wall of the base, a panoramic observation window is fixedly arranged on the outer wall of the front side of the box body, the bottom ends of the side walls of the left side and the right side of the box body are both fixedly provided with outlets, the bottom ends of the outer walls of the left side and the right side of the box body are hinged with a containing box, a partition plate is fixedly arranged in the middle of the inner bottom wall of the box body, a first bin body is fixedly arranged on the left side close to the partition plate in the box body, a second bin body is fixedly arranged on the right side close to the partition plate in the box body, a sliding table is fixedly arranged on the bottom wall of the second bin body, the inner wall of the right side of the second bin body is connected with a, the structural design is simple, the operation is convenient, the flexibility is relatively strong, and certain use value and popularization value are achieved.

Description

Probability theory and mathematical statistics principle demonstration device

Technical Field

The utility model relates to a presentation device technical field specifically is a probability theory and mathematical statistics principle presentation device.

Background

The probability theory is a mathematical branch for researching the quantity rule of random phenomena, the random phenomena are relative to the decisive phenomena, and the phenomena that certain results must occur under certain conditions are called the decisive phenomena; the probability of an event is a measure of the likelihood of the event occurring; although an event occurs occasionally in a random experiment, random experiments which can be repeated in a large number under the same condition often show obvious quantitative rules; at present, in the probability theory teaching, in order to make the student master relevant knowledge fast, the auxiliary teaching mould has been adopted, however, there are some weak points in structural design in current probability theory and mathematical statistics principle presentation device, if: the whole demonstration process needs a lot of manual operations, is relatively complex and has low automation degree. Therefore, a demonstration device for probability theory and mathematical statistics is needed to solve the disadvantages of the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a probability theory and mathematical statistics principle presentation device to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a probability theory and mathematical statistics principle demonstration device comprises a base, wherein a box body is welded on the top wall of the base, a panoramic observation window is fixedly arranged on the outer wall of the front side of the box body, an outlet is fixedly formed in the bottom end of the side wall of the left side and the right side of the box body, a containing box is hinged to the bottom end of the outer wall of the left side and the right side of the box body, a partition plate is fixedly arranged in the middle of the inner bottom wall of the box body, a first bin body is fixedly arranged on the left side close to the partition plate in the box body, a second bin body is fixedly arranged on the right side close to the partition plate in the box body, a sliding table is fixedly arranged on the bottom wall of the second bin body, a cylinder base is connected to the inner wall of the right side of the second bin body through bolts, a first electric cylinder is fixedly arranged in the middle of the bottom, one side fixed mounting that the roof of second storehouse body is close to first pipe has infrared sensor, the roof of box articulates there is the top cap, the fixed control box that is equipped with in roof right side of top cap, the roof middle part threaded connection of top cap has the second pipe, the socket has been seted up to the left and right sides inner wall of second pipe is fixed, the top threaded connection of second pipe has the hopper, the right side fixed mounting that the roof is close to the second pipe has the second electric jar, there is the second baffle left side piston end of second electric jar through flange joint.

Preferably, the front outer wall of control box is fixed and is equipped with display screen and a plurality of control key, and control box electric connection is in first electric jar, infrared sensor, second electric jar.

Preferably, the first bin body and the second bin body are symmetrically and fixedly arranged on two sides of the interior of the box body, and the internal structures of the first bin body and the second bin body are completely the same.

Preferably, the side walls of the two sides of the box body are communicated with the containing box through outlets.

Preferably, when the bottom piston rod of the first electric cylinder is fully extended, the first baffle completely covers the outlet, and the models of the first electric cylinder and the second electric cylinder are DDA 60.

Preferably, the type of the infrared sensor is D115, and a signal receiving end of the infrared sensor is fixedly arranged at a vertically corresponding position of the bottom wall of the second bin body.

Preferably, the second baffle penetrates into the penetrating port of the second guide pipe when the left piston rod of the second electric cylinder is fully extended.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses in, the signal reception end fixed mounting through the infrared sensor who sets up corresponds the department perpendicularly in second storehouse body diapire to this elasticity bobble aventurine after through infrared sensor to first pipe bottom is automatic to be counted, and with count information feedback to control box, functional practicality is stronger relatively, and demonstration efficiency is high.

2. The utility model discloses in, cooperate first baffle, second baffle respectively through the first electric jar that sets up, the ejection of compact control structure and the unloading control structure of cost device are closed to the second electric jar, and on-off control convenient and fast has saved unnecessary manual operation, and degree of automation is higher relatively.

3. The utility model discloses in, overall structure through setting up is comparatively scientific and reasonable, through structural improvement and innovation, has effectively solved some weak points that exist among the prior art to holistic principle is comparatively simple, and the function easily realizes, has certain use value and spreading value.

Drawings

FIG. 1 is a front view of the overall structure of the present invention;

FIG. 2 is a front sectional view of the overall structure of the present invention;

FIG. 3 is an enlarged view of the portion A of FIG. 2;

fig. 4 is an enlarged view of the portion B in fig. 2.

In the figure: 1-base, 2-box, 201-containing box, 3-panoramic observation window, 4-outlet, 5-partition board, 6-first bin, 7-second bin, 8-sliding table, 9-cylinder seat, 10-first electric cylinder, 11-first baffle, 12-first conduit, 13-infrared sensor, 14-top cover, 15-control box, 16-second conduit, 17-socket, 18-hopper, 19-second electric cylinder, 20-second baffle.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution:

a probability theory and mathematical statistics principle demonstration device comprises a base 1, a box body 2 is welded on the top wall of the base 1, a panoramic observation window 3 is fixedly arranged on the outer wall of the front side of the box body 2, an outlet 4 is fixedly arranged at the bottom end of the side wall of the left side and the right side of the box body 2, a containing box 201 is hinged at the bottom end of the outer wall of the left side and the right side of the box body 2, a partition plate 5 is fixedly arranged in the middle of the inner bottom wall of the box body 2, a first bin body 6 is fixedly arranged at the left side close to the partition plate 5 in the box body 2, a second bin body 7 is fixedly arranged at the right side close to the partition plate 5 in the box body 2, a sliding table 8 is fixedly arranged at the bottom wall of the second bin body 7, a cylinder base 9 is connected with the inner wall of the right side through bolts, a first electric cylinder 10 is fixedly arranged at the middle part of the, an infrared sensor 13 is fixedly arranged on one side of the top wall of the second bin body 7 close to the first conduit 12, a signal receiving end of the infrared sensor 13 is fixedly arranged at a vertical corresponding position of the bottom wall of the second bin body 7, so that the elastic small balls (not shown in the figure) after the bottom of the first conduit 12 falls down are automatically counted by the infrared sensor 13, and counting information is fed back to a control box 15, the functional practicability is relatively strong, the demonstration efficiency is high, the top wall of the bin body 2 is hinged with a top cover 14, the control box 15 is fixedly arranged on the right side of the top wall of the top cover 14, the middle part of the top wall of the top cover 14 is in threaded connection with a second conduit 16, insertion holes 17 are fixedly arranged on the inner walls of the left side and the right side of the second conduit 16, a hopper 18 is in threaded connection with the top end of the second conduit 16, a second electric cylinder 19 is fixedly arranged on the right side of the top wall, through first electric jar 10, second electric jar 19 cooperates first baffle 11, second baffle 20 respectively and constitutes the ejection of compact control structure and the unloading control structure of this device, on-off control convenient and fast, unnecessary manual operation has been saved, degree of automation is higher relatively, through the comparatively scientific and reasonable with overall structure setting, through structural improvement and innovation, some shortcomings that exist among the prior art have effectively been solved, and holistic principle is comparatively simple, the function easily realizes, certain use value and spreading value have.

The utility model discloses the theory of operation: before use, whether the first baffle 11 completely shields the outlet 4 or not is checked, whether the second baffle 20 penetrates into the inserting opening 17 of the second guide pipe 16 or not is checked, after the check is finished, elastic small balls (not shown in the figure) required to be used are placed in the hopper 18, then the piston rod of the second electric cylinder 19 is controlled by the control box 15 to shrink, so that the piston rod of the second electric cylinder 19 synchronously drives the second baffle 20 to move out to the right of the inserting opening 17, the elastic small balls (not shown in the figure) in the hopper 18 fall through the second guide pipe 16 and penetrate through the first guide pipe 12 and then fall respectively to two sides of the partition plate 5, meanwhile, signals emitted by the infrared sensor 13 are shielded once when the elastic small balls (not shown in the figure) fall, the infrared sensor 13 counts once, and the rest on the way, the infrared sensor 13 is used for respectively shielding the first bin body 6 and the second bin body, The elastic small balls (not shown in the figure) in the second bin body 7 are automatically counted, the counting information is synchronously fed back to the control box 15, after the elastic small balls (not shown in the figure) in the hopper 18 completely fall, the control box 15 controls the piston rod of the first electric cylinder 10 to completely ascend, so that the elastic small balls (not shown in the figure) in the bin body penetrate through the outlet 4 and then are collected to the containing box 201 in a centralized manner, and finally the corresponding work of the device is completed through the structure.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a probability theory and mathematical statistics principle presentation device, includes base (1), its characterized in that: the multifunctional garbage bin is characterized in that a box body (2) is welded on the top wall of the base (1), a panoramic observation window (3) is fixedly arranged on the outer wall of the front side of the box body (2), an outlet (4) is fixedly arranged at the bottom end of the side wall of the left side and the right side of the box body (2), a storage box (201) is hinged to the bottom end of the outer wall of the left side and the right side of the box body (2), a partition plate (5) is fixedly arranged in the middle of the inner bottom wall of the box body (2), a first bin body (6) is fixedly arranged at the left side close to the partition plate (5) in the box body (2), a second bin body (7) is fixedly arranged at the right side close to the partition plate (5) in the box body (2), a sliding table (8) is fixedly arranged on the bottom wall of the second bin body (7), a cylinder base (9) is connected, the bottom piston end of the first electric cylinder (10) is connected with a first baffle plate (11) through a flange, the middle of the top wall in the box body (2) is connected with a first conduit (12) through screw thread, an infrared sensor (13) is fixedly arranged on one side of the top wall of the second bin body (7) close to the first conduit (12), a top cover (14) is hinged on the top wall of the box body (2), a control box (15) is fixedly arranged on the right side of the top wall of the top cover (14), the middle part of the top wall of the top cover (14) is connected with a second conduit (16) in a threaded manner, the inner walls of the left side and the right side of the second conduit (16) are fixedly provided with inserting holes (17), the top end of the second conduit (16) is in threaded connection with a hopper (18), a second electric cylinder (19) is fixedly arranged on the top wall of the top cover (14) close to the right side of the second conduit (16), and the left piston end of the second electric cylinder (19) is connected with a second baffle plate (20) through a flange.

2. A probability theory and mathematical statistics principle demonstration apparatus according to claim 1, wherein: the front outer wall of control box (15) is fixed and is equipped with display screen and a plurality of control key, and control box (15) electric connection in first electric jar (10), infrared sensor (13), second electric jar (19).

3. A probability theory and mathematical statistics principle demonstration apparatus according to claim 1, wherein: the first bin body (6) and the second bin body (7) are symmetrically and fixedly arranged on two sides of the interior of the box body (2), and the interior structures of the first bin body and the second bin body are completely the same.

4. A probability theory and mathematical statistics principle demonstration apparatus according to claim 1, wherein: the side walls of the two sides of the box body (2) are communicated with the containing box (201) through an outlet (4).

5. A probability theory and mathematical statistics principle demonstration apparatus according to claim 1, wherein: when a bottom piston rod of the first electric cylinder (10) is fully extended, the first baffle (11) completely shields the outlet (4), and the types of the first electric cylinder (10) and the second electric cylinder (19) are DDA 60.

6. A probability theory and mathematical statistics principle demonstration apparatus according to claim 1, wherein: the type of the infrared sensor (13) is D115, and the signal receiving end of the infrared sensor (13) is fixedly arranged at the vertical corresponding position of the bottom wall of the second cabin body (7).

7. A probability theory and mathematical statistics principle demonstration apparatus according to claim 1, wherein: when the left piston rod of the second electric cylinder (19) is fully extended, the second baffle (20) penetrates into the penetrating opening (17) of the second guide pipe (16).