CN213935343U - University's mathematics probability presentation device - Google Patents

Abstract

The utility model discloses a university's mathematics probability presentation device, which comprises a base, the last fixed surface on chassis is connected with the support column, flexible groove has been seted up to the upper surface of support column, the inner wall sliding connection in flexible groove has the limiting plate, the last fixed surface of limiting plate is connected with the bracing piece, the side threaded connection of bracing piece has fixing bolt, the top fixedly connected with backup pad of bracing piece, the last fixed surface of backup pad is connected with the box body, the front of box body is provided with the PC transparent plate. This college mathematics probability presentation device through setting up box body, PC transparent plate, square hole, feed hopper, connecting pipe, positive pipe, burden pipe and control lever, observes the inside condition of box body through the PC transparent plate, makes the ball pass feed hopper simultaneously, controls positive pipe and burden pipe switching through the control lever, proves the probability of incident and not incident to reach the effect that this college mathematics probability presentation device has simple and easy teaching probability.

Description

University's mathematics probability presentation device

Technical Field

The utility model relates to a teaching aid technical field specifically is a college mathematics probability presentation device.

Background

Probability in university mathematics is an important subject, and is a scientific technology for researching random events, and is a number between 0 and 1, wherein 0 represents no event, 1 represents an event, and more than 0 and less than 1 represent probabilities. The phenomena observed in nature and society are classified into: determining phenomena and random phenomena. Probability is a branch of mathematics that studies the quantitative laws of stochastic phenomena. On the one hand, it has its own unique concepts and methods, on the other hand, it has a close connection with other mathematical branches, which are important components of modern mathematics, and the widespread use of probability is spread almost all over the scientific and technical fields, such as weather forecast, earthquake forecast, sampling survey of products; the signal interference resistance, resolution and the like can be improved in communication engineering by various departments of industrial and agricultural production and national economy.

However, when the existing students learn the probability, the students have poor learning effect because the probability is abstract and difficult to understand and the teachers speak quickly.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a university's mathematics probability presentation device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a university's mathematics probability presentation device, includes the chassis, the last fixed surface on chassis is connected with the support column, flexible groove has been seted up to the upper surface of support column, the inner wall sliding connection in flexible groove has the limiting plate, the last fixed surface of limiting plate is connected with the bracing piece, the side threaded connection of bracing piece has fixing bolt, the top fixedly connected with backup pad of bracing piece, the last fixed surface of backup pad is connected with the box body, the front of box body is provided with the PC transparent plate, the square hole has all been seted up to the both sides of box body, the last fixed surface of box body is connected with feed hopper, feed hopper's discharge end fixedly connected with connecting pipe, the bottom of connecting pipe is fixedly connected with positive pipe and negative pipe respectively, and the one end surface of positive pipe is pegged graft and is had the control lever.

Preferably, one end of the fixing bolt penetrates through the side surface of the support column and is in threaded connection with the surface of the support rod inside the support column, and a plurality of threaded holes matched with one end of the fixing bolt are vertically formed in the surface of the support rod at equal intervals.

Preferably, the right-angle groove is opened on the front of backup pad, and the inside of box body link up with the backup pad through the right-angle groove mutually.

Preferably, the discharge end of the feeding funnel penetrates through the upper surface of the box body and extends to the inner top wall of the box body, and the discharge port of the feeding funnel has the same diameter as the connecting pipe.

Preferably, the diameters of the connecting pipe, the positive pipe and the negative pipe are the same, and the top end surfaces of the positive pipe and the negative pipe are respectively inserted with a control rod.

Preferably, the back surfaces of the connecting pipe, the positive pipe and the negative pipe are fixedly connected with the inner rear wall of the box body, and the connecting pipe, the positive pipe and the negative pipe form an inverted Y shape.

Advantageous effects

The utility model provides a university's mathematics probability presentation device possesses following beneficial effect:

1. this college mathematics probability presentation device through setting up box body, PC transparent plate, square hole, feed hopper, connecting pipe, positive pipe, burden pipe and control lever, observes the inside condition of box body through the PC transparent plate, makes the ball pass feed hopper simultaneously, controls positive pipe and burden pipe switching through the control lever, proves the probability of incident and not incident to reach the effect that this college mathematics probability presentation device has simple and easy teaching probability.

2. This college mathematics probability presentation device through setting up chassis, support column, flexible groove, limiting plate, bracing piece, fixing bolt and backup pad, is convenient for adjust the height of bracing piece through fixing bolt, adjusts presentation device's height simultaneously to it has height-adjustable's effect to reach this college mathematics probability presentation device.

Drawings

FIG. 1 is a schematic view of a front cross-sectional structure of the present invention;

FIG. 2 is a schematic front view of the present invention;

fig. 3 is an enlarged schematic view of a portion a in fig. 1.

In the figure: 1 chassis, 2 support columns, 3 flexible grooves, 4 limiting plates, 5 support rods, 6 fixing bolts, 7 support plates, 8 box bodies, 9 PC transparent plates, 10 square holes, 11 feeding funnels, 12 connecting pipes, 13 positive pipes, 14 negative pipes and 15 control rods.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a university's mathematics probability presentation device, which comprises a base 1, chassis 1's last fixed surface is connected with support column 2, flexible groove 3 has been seted up to the upper surface of support column 2, the inner wall sliding connection in flexible groove 3 has limiting plate 4, limiting plate 4's last fixed surface is connected with bracing piece 5, the side threaded connection of bracing piece 5 has fixing bolt 6, fixing bolt 6's one end runs through support column 2's side and the 5 surperficial threaded connection of bracing piece inside of support column 2, and bracing piece 5's perpendicular to surface equidistance set up a plurality of screw holes with 6 one end looks adaptations of fixing bolt, the top fixedly connected with backup pad 7 of bracing piece 5, the last fixed surface of backup pad 7 is connected with box body 8, the right angle groove has been seted up in backup pad 7's.

The front of box body 8 is provided with PC transparent plate 9, square hole 10 has all been seted up to the both sides of box body 8, the last fixed surface of box body 8 is connected with feed hopper 11, feed hopper 11's discharge end runs through the upper surface of box body 8 and extends to the interior roof of box body 8, and feed hopper 11's discharge port is the same with the diameter of connecting pipe 12, feed hopper 11's discharge end fixedly connected with connecting pipe 12, the bottom of connecting pipe 12 is fixedly connected with positive pipe 13 and negative pipe 14 respectively, connecting pipe 12, the back of positive pipe 13 and negative pipe 14 and the interior back wall fixed connection of box body 8, and connecting pipe 12, the Y style of calligraphy is constituteed to positive pipe 13 and negative pipe 14, connecting pipe 12, the diameter of positive pipe 13 and negative pipe 14 is the same, and the one end surface of positive pipe 13 is pegged graft and is had control lever 15, and the top surface of positive pipe 13 and negative pipe 14 is pegged graft and is had control lever 15.

Through setting up box body 8, PC transparent plate 9, square hole 10, feed hopper 11, connecting pipe 12, positive pipe 13, negative pipe 14 and control lever 15, observe the 8 inside condition of box body through PC transparent plate 9, make the ball pass feed hopper 11 simultaneously, through the opening and closing of control lever 15 control positive pipe 13 and negative pipe 14, prove the probability of incident and not incident to reach the effect that this university's mathematics probability presentation device has simple and easy teaching probability.

The working principle is as follows: when using college mathematics probability presentation device, adjust the height of bracing piece 5 through fixing bolt 6, adjust presentation device's height simultaneously, make the ball pass feed hopper 11 simultaneously, through the switching of control lever 15 control positive pipe 13 and negative pipe 14 to observe the 8 inside circumstances of box body through PC transparent plate 9, prove the probability of incident and not incident, thereby reach the effect that this college mathematics probability presentation device has simple and easy teaching probability.

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 (6)

1. A university mathematics probability presentation device, including chassis (1), its characterized in that: the upper surface of the chassis (1) is fixedly connected with a support column (2), the upper surface of the support column (2) is provided with a telescopic groove (3), the inner wall of the telescopic groove (3) is connected with a limiting plate (4) in a sliding manner, the upper surface of the limiting plate (4) is fixedly connected with a support rod (5), the side surface of the support rod (5) is connected with a fixing bolt (6) in a threaded manner, the top end of the support rod (5) is fixedly connected with a support plate (7), the upper surface of the support plate (7) is fixedly connected with a box body (8), the front surface of the box body (8) is provided with a PC transparent plate (9), square holes (10) are formed in two sides of the box body (8), the upper surface of the box body (8) is fixedly connected with a feed hopper (11), the discharge end of the feed hopper (11) is fixedly connected with a connecting pipe (12), and the bottom end of the connecting pipe (12) is respectively fixedly connected with a positive pipe (13) and a negative pipe (14), and a control rod (15) is inserted into one end surface of the positive pipe (13).

2. A university mathematics probability presentation device as claimed in claim 1, wherein: one end of the fixing bolt (6) penetrates through the side face of the support column (2) and is in threaded connection with the surface of the support rod (5) inside the support column (2), and a plurality of threaded holes matched with one end of the fixing bolt (6) are formed in the surface of the support rod (5) in a vertical and equidistant mode.

3. A university mathematics probability presentation device as claimed in claim 1, wherein: the right-angle groove is formed in the front face of the supporting plate (7), and the inside of the box body (8) is communicated with the supporting plate (7) through the right-angle groove.

4. A university mathematics probability presentation device as claimed in claim 1, wherein: the discharge end of the feeding funnel (11) penetrates through the upper surface of the box body (8) and extends to the inner top wall of the box body (8), and the diameter of the discharge port of the feeding funnel (11) is the same as that of the connecting pipe (12).

5. A university mathematics probability presentation device as claimed in claim 1, wherein: the diameters of the connecting pipe (12), the positive pipe (13) and the negative pipe (14) are the same, and the top end surfaces of the positive pipe (13) and the negative pipe (14) are all inserted with control rods (15).

6. A university mathematics probability presentation device as claimed in claim 1, wherein: the back surfaces of the connecting pipe (12), the positive pipe (13) and the negative pipe (14) are fixedly connected with the inner rear wall of the box body (8), and the connecting pipe (12), the positive pipe (13) and the negative pipe (14) form an inverted Y shape.

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