CN212782396U

CN212782396U - Statistical probability demonstration device

Info

Publication number: CN212782396U
Application number: CN202021875447.0U
Authority: CN
Inventors: 李凌寒; 凤艳; 王露露
Original assignee: Hefei College Of Finance & Economics
Current assignee: Hefei College Of Finance & Economics
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2021-03-23
Anticipated expiration: 2030-09-01

Abstract

The utility model discloses a statistical probability presentation device, including base, deflector, sample ball and motor, the left side fixedly connected with support column of base, the collecting vat has been seted up to the inboard of base, and the upside of base installs the deflector, the surface of deflector is provided with the spout, and the inboard fixed mounting of spout has the hair band, the right side fixedly connected with barrel of bracing piece, and the inside through connection of barrel has the control lever, the upper end fixed mounting of barrel has the goal, and the inside of barrel has placed the sample ball, the outer fixed surface of control lever is connected with the driving lever, and installs the motor in the left side of control lever, the downside of barrel is provided with out the ball mouth, and goes out the internally mounted of ball mouth and have the control panel. This make things convenient for statistics probability presentation device rolls into the collecting vat through one of them spout and calculates the probability of different exports through the sample ball, and the statistics of being convenient for and statistics are quick accurate, have improved the availability factor.

Description

Statistical probability demonstration device

Technical Field

The utility model relates to a presentation device correlation technique field specifically is a statistics probability presentation device.

Background

Probability statistics is a mathematical method for researching random phenomenon statistical rules in nature, and is called probability statistics, also called a mathematical statistical method, so that students need to perform probability statistics demonstration in order to visually contact probability statistical concepts, and currently used demonstration devices are various and various, but still have some defects.

General statistics probability presentation device, probability presentation device efficiency is unsatisfactory to and inconvenient statistics, influence the use, consequently, we provide a statistics probability presentation device to in the problem that proposes in the solution of the aforesaid.

Disclosure of Invention

An object of the utility model is to provide a statistics probability presentation device to solve the general statistics probability presentation device who proposes in the above-mentioned background art, probability presentation device efficiency is unsatisfactory, and inconvenient statistics, the problem that influences the use.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a statistical probability presentation device, includes base, positioning disk, sample ball and motor, its characterized in that: the utility model discloses a ball-collecting device, including base, the upper surface of base is fixedly connected with support column, and the upper surface of support column fixedly connected with bracing piece, the collecting vat has been seted up to the inboard of base, and the upside of base installs the positioning disk, the surface of positioning disk is provided with the spout, and the inboard fixed mounting of spout has the hair ribbon, the right side fixedly connected with barrel of bracing piece, and the inside through connection of barrel has the control lever, the upper end fixed mounting of barrel has the goal, and the inside of barrel has placed the sample ball, the outer fixed surface of control lever is connected with the driving lever, and the left side of control lever installs the motor, the downside of barrel is provided with the outlet.

Preferably, the collecting grooves are uniformly arranged on the base, and the collecting grooves and the sliding grooves are in a one-to-one corresponding structure.

Preferably, the sliding grooves are distributed on the guide disc in a centrosymmetric and equal-angle uniform distribution mode and are arranged in an inclined mode.

Preferably, the control rod forms a rotating structure on the cylinder body, and the deflector rods are uniformly distributed on the control rod in a centrosymmetric and equal-angle manner.

Preferably, the ball outlet is positioned above the center of the guide disc, and the vertical section of the guide disc is of a trapezoidal structure.

Preferably, the control panel forms a detachable structure on the ball outlet, the ball outlet is in a trapezoidal structure, and the cross section of the ball outlet is in a circular structure.

Compared with the prior art, the beneficial effects of the utility model are that: the convenient statistical probability demonstration device calculates the probability of different outlets by rolling the sample ball into the collecting tank from one of the chutes, so that statistics and statistics are fast and accurate;

1. the control plate forms a detachable structure on the ball outlet, so that a channel is conveniently provided for the sample ball in the cylinder, the dropped sample ball is moved to the base through the guide disc, and meanwhile, the sample ball is prevented from dropping in the stirring process;

2. the chutes are uniformly distributed on the guide disc in a centrosymmetric equal-angle manner, so that the sample balls can conveniently slide into the chutes through the guide disc, fall onto the collecting tank to be collected for secondary use, the sample balls in the collecting tank can be conveniently counted to calculate the probability, and the blank belts are fixedly connected with the chutes, so that the rolling speed of the sample balls can be reduced;

3. the control rod forms a rotating structure on the cylinder body to drive the shifting rod to rotate, so that the sample ball can rotate rapidly in the cylinder body, and the shifting rod is distributed uniformly on the control rod in a centrosymmetric and equiangular manner, so that the sample ball can be mixed uniformly.

Drawings

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

FIG. 2 is a schematic side view of the cross-sectional structure of the present invention;

FIG. 3 is a schematic top view of the present invention;

fig. 4 is a schematic view of the connection overlooking structure of the collecting tank and the hair band of the present invention.

In the figure: 1. a base; 2. a support pillar; 3. a support bar; 4. collecting tank; 5. a chute; 6. a guide plate; 7. a hair band; 8. a barrel; 9. a ball inlet; 10. a sample ball; 11. a control lever; 12. a deflector rod; 13. a ball outlet; 14. a control panel; 15. an electric motor.

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. 1-4, the present invention provides a technical solution: a statistical probability demonstration device comprises a base 1, a support column 2, a support rod 3, a collecting tank 4, a sliding chute 5, a guide disc 6, a hair band 7, a cylinder body 8, a ball inlet 9, a sample ball 10, a control rod 11, a deflector rod 12, a ball outlet 13, a control panel 14 and a motor 15, wherein the left side of the base 1 is fixedly connected with the support column 2, the upper surface of the support column 2 is fixedly connected with the support rod 3, the inner side of the base 1 is provided with the collecting tank 4, the upper side of the base 1 is provided with the guide disc 6, the outer surface of the guide disc 6 is provided with the sliding chute 5, the inner side of the sliding chute 5 is provided with the hair band 7, the right side of the support rod 3 is fixedly connected with the cylinder body 8, the inner part of the cylinder body 8 is connected with the control rod 11 in a penetrating manner, the upper end of the cylinder body 8 is provided with the ball inlet 9, the, the lower side of the cylinder 8 is provided with a ball outlet 13, and a control plate 14 is arranged inside the ball outlet 13.

If collecting vat 4 evenly sets up on base 1 in fig. 4, and be the one-to-one structure between collecting vat 4 and the spout 5, conveniently make statistics of and collect sample ball 10, spout 5 is angular uniformity such as central symmetry on positioning disk 6 as in fig. 4, and spout 5 is the slope setting, prevent that sample ball 10 from dropping to the condition outside base 1 in the in-process that falls into collecting vat 4 and appearing, control lever 11 constitutes revolution mechanic on barrel 8 as in fig. 1, and driving lever 12 is angular uniformity such as central symmetry on control lever 11, conveniently carry out the homogeneous mixing to sample ball 10.

The ball outlet 13 is located above the center of the guide disc 6 as shown in fig. 1, and the vertical section of the guide disc 6 is in a trapezoid structure, so that the sample ball 10 accurately falls into the guide disc 6, the control board 14 forms a detachable structure on the ball outlet 13 as shown in fig. 1, the ball outlet 13 is in a trapezoid structure, and the cross section of the ball outlet 13 is in a circular structure, so that the sample ball 10 conveniently slides into the chute 5 through the guide disc 6 and then enters the collecting tank 4.

The working principle is as follows: when the statistical probability demonstration device is used, firstly, as shown in fig. 1, 2 and 3, a sample ball 10 is inserted into a cylinder 8 from a ball inlet 9, a motor 15 is started to rotate a control rod 11 so as to drive a deflector rod 12 to rotate, the deflector rod 12 is contacted with the sample ball 10 in the rotating process and enables a plurality of sample balls 10 to rapidly move in the cylinder 8, the deflector rods 12 are arranged on the control rod 11 so as to uniformly mix the sample balls 10, the ball outlet 13 is opened through a control panel 14 so that the sample balls 10 slide from the ball outlet 13 to a guide disc 6 and then roll from a chute 5 to a collection groove 4, the sample balls 10 are conveniently collected after statistics, a hairband 7 can slow down the moving speed of the sample balls 10, the sample balls 10 are prevented from colliding with the inner wall of a base 1, the abrasion of the sample balls 10 is caused, and finally, the number of the sample balls 10 in the collection groove 4 is recorded, then, the times of the sample balls 10 entering each collecting groove 4 are used as the ordinate, and the number of the collecting groove 4 is used as the abscissa to calculate the probability, which is the whole process of using the statistical probability demonstration device.

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. A statistical probability presentation device, includes base (1), guiding disc (6), sample ball (10) and motor (15), its characterized in that: the sample ball collecting device is characterized in that a supporting column (2) is fixedly connected to the left side of a base (1), a supporting rod (3) is fixedly connected to the upper surface of the supporting column (2), a collecting tank (4) is arranged on the inner side of the base (1), a guide disc (6) is installed on the upper side of the base (1), a sliding groove (5) is formed in the outer surface of the guide disc (6), a hair band (7) is fixedly installed on the inner side of the sliding groove (5), a barrel body (8) is fixedly connected to the right side of the supporting rod (3), a control rod (11) is connected to the inner portion of the barrel body (8) in a penetrating mode, a ball inlet (9) is fixedly installed at the upper end of the barrel body (8), a sample ball (10) is placed in the barrel body (8), a driving lever (12) is fixedly connected to the outer surface of the control rod (11), a motor (15, and a control panel (14) is arranged in the ball outlet (13).

2. A statistical probability presentation device as claimed in claim 1, wherein: the collecting grooves (4) are uniformly arranged on the base (1), and the collecting grooves (4) and the sliding grooves (5) are in one-to-one correspondence.

3. A statistical probability presentation device as claimed in claim 1, wherein: the sliding grooves (5) are distributed on the guide disc (6) in a centrosymmetric and equal-angle uniform distribution mode, and the sliding grooves (5) are arranged in an inclined mode.

4. A statistical probability presentation device as claimed in claim 1, wherein: the control rod (11) forms a rotating structure on the cylinder body (8), and the deflector rods (12) are uniformly distributed on the control rod (11) in a central symmetry and equal angle manner.

5. A statistical probability presentation device as claimed in claim 1, wherein: the ball outlet (13) is positioned above the center of the guide disc (6), and the vertical section of the guide disc (6) is of a trapezoidal structure.

6. A statistical probability presentation device as claimed in claim 1, wherein: the control panel (14) forms a detachable structure on the ball outlet (13), the ball outlet (13) is of a trapezoidal structure, and the cross section of the ball outlet (13) is of a circular structure.