CN210627604U

CN210627604U - Probability statistical device for applied mathematics

Info

Publication number: CN210627604U
Application number: CN201920473191.1U
Authority: CN
Inventors: 程悦玲
Original assignee: Xiamen University of Technology
Current assignee: Xiamen University of Technology
Priority date: 2019-04-09
Filing date: 2019-04-09
Publication date: 2020-05-26
Anticipated expiration: 2029-04-09

Abstract

The utility model discloses an applied mathematics's probability statistics device, including rotatory bucket, the bottom fixed mounting of rotatory bucket has three supporting legs, it connects dull and stereotypedly to be connected with one between the supporting leg, it is equipped with a receiver to connect dull and stereotyped upper end, the inside central point of rotatory bucket puts and is equipped with a rotation axis, a pair of stirring leaf is installed to the bottom position of rotation axis, the upper end fixed mounting of rotation axis has a drive gear No. two, install a transmission case on the inner wall of rotatory bucket and be connected to drive gear No. two. A probability statistics device of applied mathematics, carry out random extraction through setting up an inside rotatory bucket that is equipped with mechanical transmission, utilize outside rotatory handle can realize beating at random and mix and extract the experiment ball, replaced traditional full manpower to beat and mix and extract, more improved the randomness of extraction when using manpower sparingly.

Description

Probability statistical device for applied mathematics

Technical Field

The utility model relates to a statistics device field, in particular to probability statistics device of applied mathematics.

Background

Probability is also called probability, which reflects the probability of occurrence of random events, i.e. events which may or may not occur under the same conditions, and probability statistics is an important research subject in high-level applied mathematics, for example, the proportion of commodity sampling inspection is calculated through probability statistics, so as to obtain more accurate yield, and in a simulation experiment, balls with two colors are usually used to replace a good product and a defective product, and then random extraction is performed, however, the method is performed through manpower in the whole process, the efficiency is low, and large errors are easily caused by subjective consciousness and other reasons when people extract, so that the final result is affected.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides an applied mathematics's probability statistics device, can effectively solve the problem in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an use probability statistics device of mathematics, includes rotatory bucket, the bottom fixed mounting of rotatory bucket has three supporting legs, be connected with one between the supporting leg and connect the flat board, it is equipped with a receiver to connect dull and stereotyped upper end, the inside central point of rotatory bucket puts and is equipped with a rotation axis, a pair of stirring leaf is installed to the bottom position of rotation axis, the upper end fixed mounting of rotation axis has No. two drive gear, install a transmission case on the inner wall of rotatory bucket and be connected to No. two drive gear, be equipped with a twist grip on the outer wall of rotatory bucket and be connected to in the transmission case, a bulb outlet has been seted up in addition on the inside bottom surface of rotatory bucket and has been installed a bulb outlet.

Preferably, a barrel cover is arranged at the top end of the rotary barrel, and a lifting handle is fixedly mounted at the upper end of the barrel cover.

Preferably, the ball outlet pipe is an arc-shaped bent pipe, the pipe diameter of the ball outlet pipe is equal to the inner diameter of the ball outlet hole, the upper end of the ball outlet pipe is connected to the ball outlet hole, the lower end of the ball outlet pipe extends into the containing box connected to the upper end of the flat plate, the ball outlet pipe is movably installed on a baffle above the bending part, and the vertical ball outlet pipe at the upper end of the baffle is equal to the diameter of the experimental ball.

Preferably, a transmission shaft is connected to the center of the rotary handle, and the transmission shaft penetrates through the rotary barrel and is connected to the transmission box.

Preferably, the inside vertical bracing piece that is equipped with of transmission case, the top fixed mounting of bracing piece has a support bearing, the transmission shaft passes support bearing and installs a change gear at the end of transmission shaft, the below meshing of a change gear has a change gear No. two, the bottom of No. two change gears is equipped with a drive gear No. one, a drive gear passes the hole groove on the transmission case shell and is in the same place with No. two drive gear meshing on the rotation axis.

Preferably, the first change gear and the second change gear are bevel gears with an angle of an angle.

Preferably, the second change gear and the first transmission gear are integrally formed members, and a supporting rotating shaft is mounted at the bottom of the transmission case and connected to the center of the bottom of the first transmission gear.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses in, through setting up a rotatory bucket through mechanical transmission, a circular ball hole of going out and externally connect an arc play bulb is seted up to the bottom of rotatory bucket, the inside of rotatory bucket is equipped with a rotation axis, through rotatory epaxial stirring leaf stirring experiment ball, and the rotation axis utilizes outside twist grip to realize the drive through the transmission case to realized automatic efficient experiment, influence when also having avoided the people for the extraction improves the randomness, makes the statistical result more close to the fact.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a probability statistic device applying mathematics according to the present invention;

FIG. 2 is a schematic diagram of the internal structure of the packing bucket of the probability statistic device applying mathematics of the present invention;

FIG. 3 is a top view of a rotary drum of the present invention, illustrating a mathematical probability statistic apparatus;

fig. 4 is an enlarged view of a portion a in fig. 2.

In the figure: 1. rotating the barrel; 2. supporting legs; 3. connecting the flat plates; 4. a storage box; 5. a barrel cover; 6. a handle; 7. rotating the handle; 8. a ball outlet pipe; 9. a rotating shaft; 10. stirring blades; 11. a transmission case; 12. a ball outlet hole; 13. a drive shaft; 14. a support bar; 15. a support bearing; 16. a first change gear; 17. a second change gear; 18. a first transmission gear; 19. a support shaft; 20. a second transmission gear; 21. and a baffle plate.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-4, a probability statistics device using mathematics, including rotatory bucket 1, the bottom fixed mounting of rotatory bucket 1 has three supporting legs 2, be connected with a connection flat board 3 between the supporting leg 2, the upper end of connecting flat board 3 is equipped with a receiver 4, the inside central point of rotatory bucket 1 puts and is equipped with a rotation axis 9, a pair of stirring leaf 10 is installed to the bottom position of rotation axis 9, the upper end fixed mounting of rotation axis 9 has No. two drive gear 20, install a transmission case 11 on the inner wall of rotatory bucket 1 and be connected to No. two drive gear 20, be equipped with a twist grip 7 on the outer wall of rotatory bucket 1 and be connected to in the transmission case 11, a ball outlet 12 has been seted up in addition on the inside bottom surface of rotatory bucket 1 and a ball outlet 8 has been installed.

The top end of the rotary barrel 1 is provided with a barrel cover 5, and the upper end of the barrel cover 5 is fixedly provided with a handle 6; the ball outlet pipe 8 is an arc-shaped bent pipe, the pipe diameter of the ball outlet pipe 8 is equal to the inner diameter of the ball outlet hole 12, the upper end of the ball outlet pipe 8 is connected to the ball outlet hole 12, the lower end of the ball outlet pipe extends into the storage box 4 at the upper end of the connecting flat plate 3, a baffle plate 21 is movably mounted above the bent part of the ball outlet pipe 8, and the height of the vertical ball outlet pipe 8 at the upper end of the baffle plate 21 is equal to the diameter of the experimental ball; the center of the rotating handle 7 is connected with a transmission shaft 13, and the transmission shaft 13 penetrates through the rotating barrel 1 and is connected into the transmission box 11; a supporting rod 14 is vertically arranged in the transmission case 11, a supporting bearing 15 is fixedly arranged at the top end of the supporting rod 14, the transmission shaft 13 penetrates through the supporting bearing 15, a first change gear 16 is arranged at the tail end of the transmission shaft 13, a second change gear 17 is meshed below the first change gear 16, a first transmission gear 18 is arranged at the bottom of the second change gear 17, and the first transmission gear 18 penetrates through a hole groove in the shell of the transmission case 11 and is meshed with a second transmission gear 20 on the rotating shaft 9; the first change gear 16 and the second change gear 17 are bevel gears with an angle of 45 degrees; the second change gear 17 and the first transmission gear 18 are integrally formed, and a supporting rotating shaft 19 is installed at the bottom of the transmission case 11 and connected to the bottom center position of the first transmission gear 18.

It should be noted that the utility model relates to an applied mathematics's probability statistics device, replace the manual extraction of people through setting up a semi-automatization rotatory bucket 1, when using, at first rotate the position that twist grip 7 adjusted stirring leaf 10, can drive transmission shaft 13 and rotate when rotating twist grip 7, thereby drive a change gear 16 and rotate in vertical face, and No. two change gears 17 with a change gear 16 meshing also rotate on the horizontal plane thereupon, a drive gear 18 with No. two change gears 17 consubstantial body rotates on the horizontal plane equally, finally drive rotation axis 9 with No. two drive gear 20 of a drive gear 18 meshing rotates, thereby make stirring leaf 10 rotate to the top of ball outlet 12 and cover ball outlet 12, note down the position of twist grip 7 at this moment and make things convenient for follow-up direct selection; then pour into the ball for the experiment and cover bung 5 to the inside of revolving barrel 1, rotate twist grip 7 a plurality of circles once more, prevent twist grip 7 and stop at the position that begins the mark, because the vertical play bulb 8's in baffle 21 upper end height equals the diameter of ball for the experiment, so can only hold next experiment ball in play bulb 8, pull out baffle 21 afterwards, the experiment ball rolls into the inside of receiver 4 along going out bulb 8 thereupon, accomplishes once and draws at random.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A probability statistic device using mathematics, characterized in that: comprises a rotary barrel (1), three supporting legs (2) are fixedly arranged at the bottom of the rotary barrel (1), a connecting flat plate (3) is connected between the supporting legs (2), a storage box (4) is arranged at the upper end of the connecting flat plate (3), a rotating shaft (9) is arranged at the center of the inner part of the rotating barrel (1), a pair of stirring blades (10) is arranged at the bottom of the rotating shaft (9), a second transmission gear (20) is fixedly arranged at the upper end of the rotating shaft (9), the inner wall of the rotary barrel (1) is provided with a transmission box (11) connected to a second transmission gear (20), a rotating handle (7) arranged on the outer wall of the rotating barrel (1) is connected into a transmission case (11), the inner bottom surface of the rotary barrel (1) is additionally provided with a ball outlet hole (12) and a ball outlet pipe (8).

2. A probability statistic device using mathematics according to claim 1, wherein: a barrel cover (5) is arranged at the top end of the rotary barrel (1), and a lifting handle (6) is fixedly mounted at the upper end of the barrel cover (5).

3. A probability statistic device using mathematics according to claim 1, wherein: go out bulb (8) and be an arc return bend, and the pipe diameter size that goes out bulb (8) equals the internal diameter size that goes out bulb (12), the upper end that goes out bulb (8) is connected to on going out bulb (12), and the lower extreme stretches out in receiver (4) of connecting dull and stereotyped (3) upper end, go out bulb (8) baffle (21) of movable mounting in bend top, the vertical diameter that goes out bulb (8) in baffle (21) upper end highly equals the ball for the experiment.

4. A probability statistic device using mathematics according to claim 1, wherein: the center of the rotating handle (7) is connected with a transmission shaft (13), and the transmission shaft (13) penetrates through the rotating barrel (1) and is connected into the transmission box (11).

5. A probability statistic device using mathematics according to claim 4, wherein: the utility model discloses a bearing of the motor vehicle transmission, including transmission case (11), the inside vertical bracing piece (14) that is equipped with of transmission case (11), the top fixed mounting of bracing piece (14) has a support bearing (15), transmission shaft (13) pass support bearing (15) and install a change gear (16) at the end of transmission shaft (13), the below meshing of change gear (16) has a change gear (17) No. two, the bottom of change gear (17) is equipped with a drive gear (18) No. two, No. two drive gear (20) meshing on hole groove and the rotation axis (9) on transmission case (11) shell are in the same place in drive gear (18) pass.

6. A probability statistic device using mathematics according to claim 5, wherein: the first change gear (16) and the second change gear (17) are bevel gears with angles of 45 degrees.

7. A probability statistic device using mathematics according to claim 5, wherein: the second change gear (17) and the first transmission gear (18) are integrally formed components, and a supporting rotating shaft (19) is installed at the bottom of the transmission box (11) and connected to the center of the bottom of the first transmission gear (18).