CN112908114A - Queuing theory teaching demonstration and statistics device - Google Patents

Abstract

The invention discloses a queuing theory teaching demonstration and statistics device which comprises a target sphere mixing mechanism, an installation frame, a probability demonstration mechanism, a leveling mechanism, a bottom connecting plate and a height adjusting mechanism, wherein the target sphere mixing mechanism is arranged above the installation frame; when the device is used, random probabilistic tests are carried out on the target sphere through the manual blending component, the primary probability demonstration component and the multi-level probability dispersity demonstration component, the occurrence process of random events can be truly reflected, the dispersion and aggregation conditions of the target sphere are reflected, and the device has the characteristics of simplicity in use, clear statistics and demonstration and convenience for students to understand, observe and learn.

Description

Queuing theory teaching demonstration and statistics device

Technical Field

The invention relates to the technical field of queuing theory teaching aids, in particular to a queuing theory teaching demonstration and statistics device.

Background

Queuing theory (queuing theory), which is a mathematical theory and method for researching the random accumulation phenomenon of the system and the working process of the random service system, is also called the random service system theory and is a branch of operation research;

in the process of the queuing theory teaching, in order to enable students to intuitively understand the random convergence phenomenon of the system and the step-by-step and discrete conditions of the random service system, the probability distribution and the statistical conditions are often used for reflecting the random convergence phenomenon and the random service system, various demonstration devices are usually used, the probability events can be vividly and vividly expressed, and the learning interest of the students can also be improved; however, the conventional probability demonstration device is still limited to a tedious simulation method of coin throwing and ball dropping, which is not beneficial to continuous demonstration and mass statistics of probability events, and meanwhile, students are limited to the inherent mode, and the thinking and diverging capacity of the students is greatly limited.

Disclosure of Invention

Aiming at the problems, the invention aims to provide a queuing theory teaching demonstration and statistics device, which is used for carrying out random probabilistic test on a target sphere by arranging a manual blending component, a primary probability demonstration component and a multi-level probability dispersity demonstration component, can truly reflect the occurrence process of random events and reflect the dispersion and aggregation of the target sphere, and has the characteristics of simple use, clear statistics and demonstration and convenience for students to understand, observe and learn.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a queuing theory teaching demonstration and statistics device comprises a target sphere mixing mechanism, a mounting frame, a probability demonstration mechanism, a leveling mechanism, a bottom connecting plate and a height adjusting mechanism;

the target sphere mixing mechanism comprises a mixing box body and a manual mixing assembly, the mixing box body is a hollow box body fixedly arranged on the mounting frame, a feeding hole is formed in the upper end of the mixing box body, the feeding hole is communicated with a mixing cavity in the box body, a movable cover body is rotatably arranged at the feeding hole, and the manual mixing assembly is arranged in the mixing cavity;

the probability demonstration mechanism is arranged between the two stand columns through the fastening and connecting assembly, and is communicated with a ball outlet arranged at the bottom of the mixing box body;

the probability demonstration mechanism comprises a primary probability demonstration component and a multi-stage probability dispersity demonstration component, the primary probability demonstration component is arranged on the top transverse plate and communicated with the ball outlet to carry out primary probability statistics on a target ball, the multi-stage probability dispersity demonstration component is arranged on the lower side of the primary probability demonstration component through a fastening connection component and communicated with the primary probability demonstration component to carry out multi-stage probability statistics on the target ball;

the leveling mechanism is arranged between the bottom transverse plate and the bottom connecting plate, levels the bottom transverse plate, and is provided with a leveling bubble;

the height adjusting mechanism comprises a plurality of hydraulic rods and a base, and the hydraulic rods are arranged between the bottom connecting plate and the base.

Preferably, the manual blending assembly comprises stirring blades, a connecting shaft, a first bearing and a manual rotating rod, the first bearing is symmetrically arranged on the centers of the front side wall and the rear side wall of the blending box body, the connecting shaft penetrates through the first bearing which is symmetrically arranged and is connected with the first bearing through a key shaft, and one end of the connecting shaft, which extends out of the side wall of the blending box body, is connected with the manual rotating rod; the stirring blades are arranged on the connecting shaft in equal parts and are used for stirring and uniformly mixing the target spheres in the uniformly mixing cavity.

Preferably, the stirring blade comprises a stirring rod and a sickle-shaped stirring block, the sickle-shaped stirring block is arranged at the tail end of the stirring rod and is in threaded connection with the stirring rod, a clamping bulge is arranged at the other end of the stirring rod, the clamping bulge is matched with a clamping groove arranged on the connecting shaft for use, and the stirring rod is arranged on the connecting shaft.

Preferably, the middle of the top transverse plate is also provided with a gating plate and a binding opening type guide connecting pipe, wherein the guide connecting pipe is arranged on the lower side of the gating plate, the gating plate is provided with a gating hole, and the gating hole is matched with the primary probability demonstration component for use; the primary probability demonstration assembly comprises a gating motor, a transmission rod, gating fan blades and a second bearing, wherein the second bearing is arranged in the middle of a gating plate, the transmission end of the gating motor penetrates through the second bearing to be connected with the transmission rod, the tail end of the transmission rod is connected with the gating fan blades, and 3 gating fan blades are arranged on the gating fan blades in an equant mode.

Preferably, the multi-stage probability dispersibility demonstration assembly comprises a transparent baffle, a discrete demonstration board and a side baffle, wherein the transparent baffle and the discrete demonstration board are isosceles triangle board bodies, and the discrete demonstration board is connected with the two stand columns through fastening connection assemblies; the front side symmetry of discrete demonstration board is provided with rotates the spliced pole, rotates and overlaps in proper order from interior to exterior on the spliced pole and is equipped with lateral part baffle, cushion cover and transparent baffle, just is provided with the interior screw hole on rotating the spliced pole and uses with fastening bolt cooperation.

Preferably, the fastening and connecting assembly comprises fixing screw rods and threaded fasteners, the threaded fasteners are symmetrically arranged on the left side and the right side of the discrete demonstration board, and the fixing screw rods penetrate through the upright posts and are connected with the threaded fasteners; the outer side of the side baffle is further provided with a connecting sleeve, the connecting sleeve is matched with an adjusting bolt for use, the adjusting bolt penetrates through a screw hole formed in the stand column and is connected with the connecting sleeve, and a second buffer spring is further sleeved on the adjusting bolt on the inner side of the stand column.

Preferably, a plurality of demonstration slots are arranged on the discrete demonstration board, are distributed in a triangular arrangement and are matched with the retaining columns for use; the downside of discrete demonstration board still is provided with statistics groove and probability statistics subassembly, separates through the baffle between the adjacent statistics groove, and the front side in statistics groove is provided with the front side shield, is provided with the water conservancy diversion hole on the front side shield, and the water conservancy diversion hole is connected with target spheroid collecting pipe, and is provided with adjustable fender at the front end of target spheroid collecting pipe.

Preferably, the bumping post include hollow post, rubber sleeve and afterbody base, hollow post and afterbody pedestal connection, the fixed cover of rubber sleeve is established on hollow post, uses with the cooperation of demonstration slot.

Preferably, the bottom side in statistics groove still be provided with buffering intercommunication board and first buffer spring, buffering intercommunication board slope sets up, first buffer spring sets up the downside at buffering intercommunication board slope end, and is provided with electrically conductive protruding at the downside of buffering intercommunication board, electrically conductive protruding and the cooperation of probability statistics subassembly are used, and the probability statistics subassembly is including response chip, display screen and singlechip, and the response chip sets up in electrically conductive bellied below, and is connected with the display screen through the singlechip, makes statistics of the target spheroid quantity that falls.

Preferably, leveling mechanism set up on four angles between bottom diaphragm and bottom connecting plate, including fastener and horizontal adjustment spare, the horizontal adjustment spare includes third bearing, manual adjustment dish and threaded rod, the lower extreme of threaded rod passes the bottom connecting plate, and with bottom connecting plate threaded connection, manual adjustment dish fixed mounting is on the threaded rod, and the upper end and the third bearing of threaded rod are connected, the third bearing passes through the fastener and installs in the spread groove of bottom diaphragm lower extreme.

The invention has the beneficial effects that: the invention discloses a queuing theory teaching demonstration and statistics device, compared with the prior art, the improvement of the invention is that:

(1) the invention designs a queuing theory teaching demonstration and statistics device, which comprises a manual blending component, a primary probability demonstration component and a multi-level probability dispersibility demonstration component, wherein when the device is used, different target spheres placed in a blending box body are blended by manually rotating a manual rotating rod, and fall down from a gating hole randomly under the working of a motor;

(2) meanwhile, after the target sphere falls from the gating hole, the target sphere enters a multi-stage probability dispersibility demonstration assembly, and the target sphere is subjected to a secondary and more complex random falling process through the blocking effect of the blocking column, so that the method is suitable for the process of queuing theory teaching demonstration and statistics with high complexity requirement and more influence parameters; moreover, the transparent baffle plate can enable students to clearly and visually see the random falling generation process of each target sphere, so as to reflect the dispersion and aggregation degree of the target spheres, and the transparent and clear process has the advantages of being convenient for the students to observe and understand;

(3) the movable side baffle and the movable stop post are arranged on the discrete demonstration board, so that the adjustment is simple, the application range is wider, and the probability teaching demonstration under various complex conditions is facilitated; after the target ball falls down, the number of the small balls can be clearly counted and the result can be clearly displayed by utilizing the sensing chip and the display screen, the result is clear, and the method has the advantages of simplicity and convenience, clear statistical process and demonstration result, and convenience for students to understand, observe and learn.

Drawings

FIG. 1 is a side view of the queuing theory teaching demonstration and statistics apparatus of the present invention.

FIG. 2 is a cross-sectional view of the main viewing angle of the queuing theory teaching demonstration and statistics apparatus of the present invention.

Fig. 3 is a partially enlarged view of the apparatus a for demonstrating and counting the queuing theory teaching of the present invention.

FIG. 4 is a schematic structural view of the stirring vane of the present invention.

FIG. 5 is a top view of the gate fan blade of the present invention.

FIG. 6 is a cross-sectional view of a side view of the queuing theory teaching demonstration and statistics apparatus of the present invention.

Fig. 7 is a partial enlarged view of the queuing theory teaching demonstration and statistics device B of the present invention.

Fig. 8 is a schematic structural view of the bumping post of the present invention.

FIG. 9 is an assembly view of a multi-stage probability distribution demonstration assembly of the present invention.

FIG. 10 is a schematic structural diagram of a multi-stage probability distribution demonstration assembly according to the present invention.

Fig. 11 is a schematic structural view of the transparent baffle of the present invention.

Fig. 12 is a cross-sectional view of a leveling mechanism of the present invention.

Fig. 13 is a schematic structural view of the horizontal adjustment member of the present invention.

FIG. 14 is a control schematic of the probabilistic statistical component of the present invention.

Wherein: 1. the device comprises a blending box body, 11 parts of a feeding hole, 12 parts of a movable cover body, 13 parts of a ball outlet, 14 parts of a blending cavity, 2 parts of a manual blending assembly, 21 parts of stirring blades, 211 parts of a stirring rod, 212 parts of a sickle-shaped stirring block, 213 parts of a clamping bulge, 22 parts of a connecting shaft, 23 parts of a first bearing, 24 parts of a manual rotating rod, 3 parts of a top transverse plate, 31 parts of a gating plate, 311 parts of a selecting through hole, 32 parts of a guiding connecting pipe, 33 parts of a gating motor, 34 parts of a driving rod, 35 parts of a gating fan blade, 351 parts of a gating blade, 36 parts of a second bearing, 4 parts of a multistage probability dispersion demonstration assembly, 40 parts of a transparent baffle, 41 parts of a discrete demonstration plate, 411 parts of a demonstration slot, 412 parts of a threaded fastener, 413 parts of a rotating connecting rod, 414 parts of a cushion cover, 415 parts of a fastening bolt, 42 parts of a side baffle, 421 parts of a connecting sleeve, 43 parts of a statistic, 435. the device comprises a buffer communicating plate, 436, a first buffer spring, 437, a conductive protrusion, 44, a target sphere collecting pipe, 45, a partition plate, 46, a movable baffle plate, 47, a fixed screw rod, 48, an adjusting bolt, 49, a second buffer spring, 5, an upright post, 51, a handle, 6, a bottom transverse plate, 61, a level bubble, 62, a connecting groove, 7, a leveling mechanism, 71, a fastener, 72, a horizontal adjusting piece, 721, a third bearing, 722, a manual adjusting disc, 723, a threaded rod, 8, a bottom connecting plate, 9, a blocking column, 91, a hollow column, 92, a rubber sleeve, 93, a tail base, 10, a base and 101, and a hydraulic rod.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following further describes the technical solution of the present invention with reference to the drawings and the embodiments.

Referring to the accompanying drawings 1-14, a queuing theory teaching demonstration and statistics device comprises a target sphere uniformly mixing mechanism, a mounting frame, a probability demonstration mechanism, a leveling mechanism 7, a bottom connecting plate 8 and a height adjusting mechanism;

the target sphere mixing mechanism comprises a mixing box body 1 and a manual mixing component 2, the mixing box body 1 is a hollow box body fixedly arranged on the mounting frame, a feed port 11 is formed in the upper end of the mixing box body 1, the feed port 11 is communicated with a mixing cavity 14 in the box body 1, a movable cover body 12 is rotatably arranged at the feed port 11, when target spheres are mixed, the feed port 11 is blocked, the target spheres are prevented from flying out, and the manual mixing component 2 is arranged in the mixing cavity 14 and used for mixing the target spheres in the mixing cavity 14;

the mounting frame comprises a top transverse plate 3, stand columns 5 and a bottom transverse plate 6, the stand columns 5 are symmetrically arranged between the top transverse plate 3 and the bottom transverse plate 6, the top transverse plate 3 is connected with the bottom transverse plate 6, a handle 51 is arranged on the outer side of each stand column 5 and is convenient to take and place, the mixing box body 1 is arranged in the middle of the top transverse plate 3 and is fixed with the top transverse plate 3 through bolts, the probability demonstration mechanism is arranged between the two stand columns 5 through a fastening and connecting assembly and is used for demonstrating the probability of a target sphere in the falling process, and the probability demonstration mechanism is communicated with a sphere outlet 13 arranged at the bottom of the mixing box body 1, so that the target sphere can smoothly enter the probability demonstration mechanism;

the probability demonstration mechanism comprises a primary probability demonstration component and a multi-level probability dispersity demonstration component 4, the primary probability demonstration component is arranged on the top transverse plate 3 and is communicated with the ball outlet 13, primary probability teaching demonstration and statistics are carried out on a target ball, and the probability demonstration mechanism is used for simple queuing theory teaching; the multistage probability dispersibility demonstration component 4 is arranged on the lower side of the primary probability demonstration component through the fastening connection component and is communicated with the primary probability demonstration component, multistage probability statistics is carried out on a target sphere, and the multistage probability dispersibility demonstration component is suitable for complex queuing theory teaching with a large number of influence factors;

the leveling mechanism 7 is arranged between the bottom transverse plate 6 and the bottom connecting plate 8, levels the bottom transverse plate 6, influences the probability statistics result due to the inclination of the upper device when the value is obtained, is provided with a level bubble 61 on the bottom transverse plate 6, and displays the level degree of the bottom transverse plate 6;

the height adjusting mechanism comprises a plurality of hydraulic rods 101 and a base 10, wherein the hydraulic rods 101 are arranged between the bottom connecting plate 8 and the base 10, so that the bottom connecting plate 8, namely the structural height above the bottom connecting plate 8, can be conveniently adjusted when the height adjusting mechanism is used.

The manual blending assembly 2 comprises a stirring blade 21, a connecting shaft 22, a first bearing 23 and a manual rotating rod 24, the first bearings 23 are symmetrically arranged on the centers of the front side wall and the rear side wall of the blending box body 1, the connecting shaft 22 penetrates through the first bearings 23 which are symmetrically arranged and is arranged in the blending cavity 14, the connecting shaft 22 is connected with the first bearings 23 through key shafts, one end of the connecting shaft 22, which extends out of the side walls of the blending box body 1, is connected with the manual rotating rod 24, the stirring blade 21 is arranged on the connecting shaft 22 in an equal division manner, and when the manual blending assembly is used, the manual rotating rod 24 is manually rotated to drive the stirring blade 21 to rotate so as to stir and blend a target sphere in the blending cavity 14;

preferably, 4 stirring blades 21 are arranged on the connecting shaft 22 at equal intervals in order to fully mix the target spheres;

preferably, in order to adjust the foot stirring length of the stirring blade 21 according to the sizes of different target spheres, so as to better stir and mix the target spheres in the mixing chamber 14, the stirring blade 21 comprises a stirring rod 211 and a sickle-shaped stirring block 212, the sickle-shaped stirring block 212 is arranged at the tail end of the stirring rod 211 and is in threaded connection with the stirring rod 211, so that the length of the stirring blade 21 can be adjusted by rotating the sickle-shaped stirring block 212; the other end of the stirring rod 211 is also provided with a clamping protrusion 213, the clamping protrusion 213 is matched with a clamping groove arranged on the connecting shaft 22 for use, and the stirring rod 211 is arranged on the connecting shaft 22.

A gating plate 31 and a beam-mouth-shaped guide connecting pipe 32 are further arranged in the middle of the top transverse plate 3, wherein the guide connecting pipe 32 is arranged on the lower side of the gating plate 31 and plays a role in guiding a target sphere, a gating hole 311 is formed in the gating plate 31, and the gating hole 311 is matched with a primary probability demonstration component for use to perform primary probability demonstration of the target sphere; the primary probability demonstration component comprises a gating motor 33, a transmission rod 34, a gating fan blade 35 and a second bearing 36, the second bearing 36 is arranged in the middle of the gating plate 31, the transmission end of the gating motor 33 passes through the second bearing 36 to be connected with the transmission rod 34 to drive the transmission rod 34 to rotate, the tail end of the transmission rod 34 is connected with the gating fan blades 35, the transmission rod 34 drives the gating fan blades 35 to rotate, so that the target sphere can randomly fall from the gating holes 311 through the gaps among the gating blades 351 arranged on the gating fan blades 35, primary probability demonstration of the target sphere is performed, and in the process of performing the primary probability demonstration of the target sphere, since the stirring rotation speed of the manual rotation lever 24 is different from the operating frequency of the gate motor 33, therefore, the falling randomness of the target ball can be ensured, and the accuracy of the demonstration result is further ensured.

Preferably, in order to ensure that the individual screening falls, 3 gating blades 351 are equally arranged on the gating blades 35, and when one gating blade 351 is aligned with the gating hole 311 and a target sphere falls in use, other target spheres are clamped into gaps between the other gating blades 351, so that a pre-falling tendency is formed.

The multi-stage probability dispersity demonstration assembly 4 comprises a transparent baffle 40, a discrete demonstration board 41 and a side baffle 42, wherein the transparent baffle 40 and the discrete demonstration board 41 are isosceles triangle boards, and the discrete demonstration board 41 is connected with the two upright posts 5 through fastening connection assemblies and is stably installed between the two upright posts 5; the front side of the discrete demonstration board 41 is symmetrically provided with a rotating connecting column 413, the rotating connecting column 413 is sequentially sleeved with a side baffle 42, a cushion cover 414 and a transparent baffle 40 from inside to outside, and the rotating connecting column 413 is provided with an inner screw hole matched with a fastening bolt 415 for use, so that the side baffles 42 are symmetrically and movably arranged on the left side and the right side of the front side of the discrete demonstration board 41, and when the discrete demonstration board is used, probability demonstration with different requirements and complexity degrees is realized by adjusting the inclination angles of the two side baffles 42; transparent baffle 40 passes through fastening bolt 415 to be installed in the outside of cushion cover 414, when using, utilizes the baffle can retrain the target spheroid, prevents that it from falling into the outside, influences the accuracy of experimental result, can make the more clear understanding of student observe probability distribution's characteristic simultaneously as the translucence.

Preferably, in order to fix the discrete demonstration board 41, the fastening and connecting assembly includes a fixing screw 47 and a threaded fastener 412, the threaded fastener 412 is symmetrically disposed on the left and right sides of the discrete demonstration board 41, and the fixing screw 47 passes through the upright 5 to connect with the threaded fastener 412, so as to fix the discrete demonstration board 41.

Preferably, in order to adjust the inclination angles of the two side baffles 42 conveniently, probability demonstration of different requirements and complexity is realized, a connecting sleeve 421 is arranged on the outer side of each side baffle 42, the connecting sleeve 421 is matched with an adjusting bolt 48 for use, the adjusting bolt 48 penetrates through a screw hole formed in the upright post 5 and is connected with the connecting sleeve 421, the inclination angle of each side baffle 42 is adjusted by rotating the adjusting bolt 48, and a second buffer spring 49 is further sleeved on the adjusting bolt 48 on the inner side of the upright post 5 to play roles of buffering and fixing.

Preferably, for the rock and the statistics of carrying on multiple probability knowledge in order to carry out discrete demonstration board 41 on be provided with a plurality of demonstration slots 411, demonstration slots 411 are triangle-shaped and arrange the distribution, and demonstrate slot 411 and bumping post 9 cooperation and use, during the use, can insert the demonstration slot 411 of corresponding position with the bumping post 9 of corresponding quantity as required in, utilize the probability condition of different simulation of the effect that blocks of bumping post 9, be convenient for realize the probability demonstration of multiple condition.

Preferably, in order to count and collect the target sphere, the lower side of the discrete demonstration board 41 is further provided with a counting groove 43 and a probability counting assembly, the adjacent counting grooves 43 are separated by a partition board 45, the front side of the counting groove 43 is provided with a front side baffle 434, a flow guide hole 431 is formed in the front side baffle 434, the falling target sphere is led out conveniently, the flow guide hole 431 is connected with a transparent target sphere collecting pipe 44, the target sphere is distinguished according to the color of the target sphere conveniently, probability counting is performed, a movable baffle 46 is arranged at the front end of the target sphere collecting pipe 44, and when the experiment is completed, the target sphere can be collected and recovered by opening the movable baffle 46.

Preferably, a buffering communicating plate 435 and a first buffering spring 436 are further arranged on the bottom side of the counting groove 43, so that the target sphere slides down and slides out of the diversion hole 431, the buffering communicating plate 435 is obliquely arranged, the first buffering spring 436 is arranged on the lower side of the oblique end of the buffering communicating plate 435 to play a buffering role, a conductive protrusion 437 is arranged on the lower side of the buffering communicating plate 435, and the conductive protrusion 437 is matched with a probability counting assembly to count the number of the target spheres; probability statistics subassembly includes induction chip 433, display screen 432 and singlechip, induction chip 433 sets up in electrically conductive protruding 437 below, and induction chip 433 passes through the singlechip and is connected with display screen 432, when falling on buffering intercommunication board 435 promptly when the target spheroid, form momentary pressure to buffering intercommunication board 435, make the expansion end downstream of buffering intercommunication board 435, first buffer spring 436 is compressed, make electrically conductive protruding 437 and induction chip 433 switch-on, form data statistics once, show data on display screen 432 through singlechip control again, count target spheroid quantity that falls.

Preferably, bumping post 9 including hollow post 91, rubber sleeve 92 and afterbody base 93, hollow post 91 is connected with afterbody base 93, the fixed cover of rubber sleeve 92 is established on hollow post 91, uses with demonstration slot 411 cooperation, when using promptly, when hollow post 91 inserted demonstration slot 411 in, rubber sleeve 92 card goes into in the demonstration slot 411, fixes hollow post 91, simultaneously afterbody base 93 is the hourglass type, the finger grip of being convenient for during the use.

The leveling mechanisms 7 are arranged at four corners between the bottom transverse plate 6 and the bottom connecting plate 8 and comprise fasteners 71 and horizontal adjusting pieces 72, each horizontal adjusting piece 72 comprises a third bearing 721, a manual adjusting disc 722 and a threaded rod 723, the lower end of each threaded rod 723 penetrates through the bottom connecting plate 8 and is in threaded connection with the bottom connecting plate 8, each manual adjusting disc 722 is fixedly installed on each threaded rod 723, the upper end of each threaded rod 723 is connected with the corresponding third bearing 721, each third bearing 721 is installed in the connecting groove 62 in the lower end of the bottom transverse plate 6 through the fasteners 71, the horizontal adjusting pieces 72 are installed between the bottom transverse plate 6 and the bottom connecting plate 8, and when the device is used, the heights of the four corners of the bottom transverse plate 6 are adjusted by rotating the manual adjusting discs 722 to enable the four corners to be horizontal, and therefore the accuracy of a probability demonstration.

The use process and the use principle of the queuing theory teaching demonstration and statistics device are as follows:

firstly, the queuing theory teaching demonstration and statistics device is placed on a platform or other experiment tables through holding the handle 51 by hands, so that the demonstration surface can be aligned with the visual field of students; secondly, adjusting the overall height of the device by using a height adjusting mechanism as required, rotating a manual adjusting disc 722 according to the horizontal degree of the bottom transverse plate 6, and adjusting the horizontal degree of the bottom transverse plate 6 by using a leveling mechanism 7 so as to center the air level; according to the demonstration needs again, put into the target spheroid of different quantity, specification, colour in mixing box body 1, then manual rotatory manual bull stick 24 carries out the mixing to the target spheroid, opens gating motor 33 after the mixing and carries out first probability demonstration to the target spheroid, and inferior process has multiple condition: if the demonstration teaching purpose can be realized only through the primary probability demonstration component at the moment, the blocking column 9 can be drawn out of the demonstration slot 411, the adjusting bolt 48 is rotated to enable the side blocking plate 42 to be vertical, and the target sphere is directly collected and counted; (2) if the process needing to be simulated is complex, a corresponding number of blocking columns 9 can be selected according to a complex program, the blocking columns 9 are inserted into corresponding demonstration slots 411, the inclination angle of the side baffle 42 is adjusted through the adjusting bolt 48, so that the target sphere can be restrained, the target sphere falls into the corresponding counting groove 43, and the number of the target spheres is counted and collected; and finally, reading the statistical quantity through the display screen 432, carrying out dispersion and aggregation analysis on the target sphere, researching the queuing theory, and after finishing, collecting the queuing theory teaching demonstration and statistics device.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. The utility model provides a formation theory teaching demonstration and statistics device which characterized in that: the device comprises a target sphere uniformly mixing mechanism, a mounting frame, a probability demonstration mechanism, a leveling mechanism (7), a bottom connecting plate (8) and a height adjusting mechanism;

the target sphere uniformly-mixing mechanism comprises a uniformly-mixing box body (1) and a manual uniformly-mixing component (2), the uniformly-mixing box body (1) is a hollow box body fixedly arranged on the mounting frame, a feeding hole (11) is formed in the upper end of the uniformly-mixing box body (1), the feeding hole (11) is communicated with a uniformly-mixing cavity (14) in the box body (1), a movable cover body (12) is rotatably arranged at the feeding hole (11), and the manual uniformly-mixing component (2) is arranged in the uniformly-mixing cavity (14);

the mounting frame comprises a top transverse plate (3), stand columns (5) and a bottom transverse plate (6), the stand columns (5) are symmetrically arranged between the top transverse plate (3) and the bottom transverse plate (6), the top transverse plate (3) is connected with the bottom transverse plate (6), a handle (51) is arranged on the outer side of each stand column (5), the mixing box body (1) is arranged in the middle of the top transverse plate (3), the probability demonstration mechanism is arranged between the two stand columns (5) through a fastening and connecting assembly, and the probability demonstration mechanism is communicated with a ball outlet (13) formed in the bottom of the mixing box body (1);

the probability demonstration mechanism comprises a primary probability demonstration component and a multi-level probability dispersity demonstration component (4), the primary probability demonstration component is arranged on the top transverse plate (3) and communicated with the ball outlet (13) to carry out primary probability statistics on a target ball, and the multi-level probability dispersity demonstration component (4) is arranged on the lower side of the primary probability demonstration component through a fastening connection component and communicated with the primary probability demonstration component to carry out multi-level probability statistics on the target ball;

the leveling mechanism (7) is arranged between the bottom transverse plate (6) and the bottom connecting plate (8) and is used for leveling the bottom transverse plate (6), and a leveling bubble (61) is arranged on the bottom transverse plate (6); the height adjusting mechanism comprises a plurality of hydraulic rods (101) and a base (10), and the hydraulic rods (101) are arranged between the bottom connecting plate (8) and the base (10).

2. The apparatus for teaching demonstration and statistics of queuing theory as claimed in claim 1, wherein: the manual blending assembly (2) comprises stirring blades (21), a connecting shaft (22), a first bearing (23) and a manual rotating rod (24), the first bearing (23) is symmetrically arranged on the centers of the front side wall and the rear side wall of the blending box body (1), the connecting shaft (22) penetrates through the first bearing (23) which is symmetrically arranged and is connected with the first bearing (23) through a key shaft, and one end of the connecting shaft (22) extending out of the side wall of the blending box body (1) is connected with the manual rotating rod (24); the stirring blades (21) are equally arranged on the connecting shaft (22) to stir and mix the target spheres in the mixing cavity (14).

3. The apparatus for teaching demonstration and statistics of queuing theory as claimed in claim 2, wherein: stirring vane (21) including stirring rod (211) and sickle stirring piece (212), sickle stirring piece (212) set up in the end of stirring rod (211), and with stirring rod (211) threaded connection, the other end of stirring rod (211) is provided with chucking arch (213), chucking arch (213) and the draw-in groove cooperation use of setting on even axle (22).

4. The apparatus for teaching demonstration and statistics of queuing theory as claimed in claim 1, wherein: a gating plate (31) and a binding opening type guide connecting pipe (32) are further arranged in the middle of the top transverse plate (3), the guide connecting pipe (32) is arranged on the lower side of the gating plate (31), a gating hole (311) is formed in the gating plate (31), and the gating hole (311) is matched with the primary probability demonstration component for use; the primary probability demonstration assembly comprises a gating motor (33), a transmission rod (34), gating fan blades (35) and a second bearing (36), wherein the second bearing (36) is arranged in the middle of a gating plate (31), the transmission end of the gating motor (33) penetrates through the second bearing (36) to be connected with the transmission rod (34), the tail end of the transmission rod (34) is connected with the gating fan blades (35), and 3 gating fan blades (351) are arranged on the gating fan blades (35) in an equant mode.

5. The apparatus for teaching demonstration and statistics of queuing theory as claimed in claim 1, wherein: the multi-stage probability dispersity demonstration assembly (4) comprises a transparent baffle (40), a discrete demonstration board (41) and a side baffle (42), wherein the transparent baffle (40) and the discrete demonstration board (41) are isosceles triangle board bodies, and the discrete demonstration board (41) is connected with the two upright posts (5) through fastening connection assemblies; the front side symmetry of discrete demonstration board (41) is provided with rotates spliced pole (413), rotates spliced pole (413) and goes up the cover by interior and outside in proper order and is equipped with lateral part baffle (42), covers and uses with fastening bolt (415), and is provided with interior screw hole and uses with fastening bolt (415) cooperation on rotating spliced pole (413), fixes covering and fixing with transparent baffle (40).

6. The apparatus for demonstrating and counting the teaching of queuing theory as claimed in claim 5, wherein: the fastening and connecting assembly comprises a fixing screw rod (47) and threaded fasteners (412), the threaded fasteners (412) are symmetrically arranged on the left side and the right side of the discrete demonstration board (41), and the fixing screw rod (47) penetrates through the upright post (5) to be connected with the threaded fasteners (412); the outer side of the side baffle (42) is further provided with a connecting sleeve (421), the connecting sleeve (421) is matched with an adjusting bolt (48) for use, the adjusting bolt (48) penetrates through a screw hole formed in the upright post (5) to be connected with the connecting sleeve (421), and the adjusting bolt (48) on the inner side of the upright post (5) is further sleeved with a second buffer spring (49).

7. The apparatus for demonstrating and counting the teaching of queuing theory as claimed in claim 5, wherein: the discrete demonstration board (41) is provided with a plurality of demonstration slots (411), and the demonstration slots (411) are distributed in a triangular arrangement and matched with the retaining columns (9) for use; the downside of discrete demonstration board (41) still is provided with statistics groove (43) and probability statistics subassembly, separates through baffle (45) between adjacent statistics groove (43), and the front side of statistics groove (43) is provided with front baffle (434), is provided with water conservancy diversion hole (431) on front baffle (434), and water conservancy diversion hole (431) are connected with target spheroid collecting pipe (44), and are provided with adjustable fender (46) at the front end of target spheroid collecting pipe (44).

8. The apparatus for demonstrating and counting the teaching of queuing theory as claimed in claim 7, wherein: the fender post (9) include hollow post (91), rubber sleeve (92) and afterbody base (93), hollow post (91) is connected with afterbody base (93), rubber sleeve (92) fixed cover is established on hollow post (91), uses with demonstration slot (411) cooperation.

9. The apparatus for demonstrating and counting the teaching of queuing theory as claimed in claim 7, wherein: the bottom side of statistics groove (43) still be provided with buffering intercommunication board (435) and first buffer spring (436), buffering intercommunication board (435) slope sets up, first buffer spring (436) set up the downside at buffering intercommunication board (435) slope end, and be provided with electrically conductive arch (437) at the downside of buffering intercommunication board (435), electrically conductive arch (437) and probability statistics subassembly cooperation are used, the probability statistics subassembly includes induction chip (433), display screen (432) and singlechip, induction chip (433) set up the below at electrically conductive arch (437), and be connected with display screen (432) through the singlechip, count target spheroid quantity that falls.

10. The apparatus for teaching demonstration and statistics of queuing theory as claimed in claim 1, wherein: leveling mechanism (7) set up on four angles between bottom diaphragm (6) and bottom connecting plate (8), including fastener (71) and horizontal adjustment spare (72), horizontal adjustment spare (72) include third bearing (721), manual adjusting disk (722) and threaded rod (723), bottom connecting plate (8) are passed to the lower extreme of threaded rod (723), and with bottom connecting plate (8) threaded connection, manual adjusting disk (722) fixed mounting is on threaded rod (723), and the upper end and the third bearing (721) of threaded rod (723) are connected, install in connecting groove (62) of bottom diaphragm (6) lower extreme through fastener (71) third bearing (721).

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