CN115394155A - Statistics normal distribution demonstration teaching aid - Google Patents

Abstract

The invention discloses a statistical normal distribution demonstration teaching aid. The demonstration table comprises a fixed table, wherein a height adjusting and fixing device is arranged on a rotating column, a demonstration table is fixedly connected onto the fixed table, a feeding device is arranged at the top of the fixed table, and a gravel data column is arranged in the demonstration table.

Description

Statistics normal distribution demonstration teaching aid

Technical Field

The invention relates to the technical field of statistics demonstration teaching aids, in particular to a statistics normal distribution demonstration teaching aid.

Background

Statistics is through the search, the arrangement, the analysis, means such as description data, in order to reach the essence of inferring the object of surveying, it has certain abstract, it is difficult for students to digest and absorb in the classroom, for improving the effect of giving lessons, just need the demonstration to have relatively and demonstrate, understand with help students, current statistics normal distribution demonstration teaching aid highly is mostly fixed, make the unable clear seeing of the student that the seat leaned on back when teaching, lead to leading to unable people's audio-visual observation to understand, statistics demonstration teaching aid demonstration needs artifical drawing simultaneously, artifical drawing is not only extravagant a large amount of time, still influence teaching efficiency, current statistics teaching demonstration teaching aid removes unchangeably simultaneously, thereby it is hard to take trouble when resulting in statistics teaching demonstration teaching aid to remove.

Therefore, a statistical normal distribution demonstration teaching aid is designed.

Disclosure of Invention

The invention aims to solve the problems that the height of a demonstration teaching aid in the prior art is mostly fixed and cannot be intuitively observed and understood by people, and provides a statistical normal distribution demonstration teaching aid.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a statistics normal distribution demonstrates teaching aid, includes the fixed station, its characterized in that, be equipped with the lift groove in the fixed station, and the lift inslot is equipped with the elevator that goes up and down, fixedly connected with's first toothed belt on the elevator, the fixed station internal rotation is connected with rotates the post, rotate fixedly connected with rolling gear on the post, be equipped with altitude mixture control fixing device on the rotation post, fixedly connected with demonstration platform on the fixed station, and a plurality of division boards of fixedly connected with in the demonstration platform, the fixed station top is equipped with feed arrangement, be equipped with grit data post in the demonstration platform, set up the second sliding tray on the demonstration platform, and be equipped with gliding first sliding block in the second sliding tray, be equipped with the flattening device in the demonstration platform, fixedly connected with collecting box on the first sliding block, be equipped with in the collecting box and collect the closing device, the collecting box internal rotation is connected with rotates the toothed column, fixedly connected with the second rolling disc on the rotating column, set up the second rolling disc that is the circumference evenly sets up on the second rolling disc, and be equipped with gliding bolt in the second fixed hole, the fixed station bottom is equipped with a plurality of universal wheels.

Preferably, height adjustment fixing device includes the first rotary disk of fixed connection on the rotation post, set up the first fixed hole that is the even setting of circumference on the first rotary disk, and be equipped with gliding fixed spacing post in the first fixed hole, fixedly connected with connecting plate on the fixed spacing post, be equipped with supporting spring on the connecting plate, and supporting spring's the other end and fixed station fixed connection, fixed spacing post is through the fixed first rotary disk of first fixed hole, feed arrangement includes demonstration bench top fixed connection's inlet pipe, fixedly connected with storage case on the inlet pipe, a plurality of first sliding trays have been seted up on the storage case, and all are equipped with gliding movable block in the first sliding tray, fixedly connected with arm-tie on the movable block, be equipped with first reset spring on the arm-tie, and the other end and the storage case fixed connection of first reset spring, the movable block slides in the storage case through first sliding tray.

Preferably, feed arrangement includes demonstration bench top fixed connection's inlet pipe, fixedly connected with storage case on the inlet pipe, a plurality of first sliding trays have been seted up on the storage case, and all be equipped with gliding movable block in the first sliding tray, fixedly connected with arm-tie on the movable block, be equipped with first reset spring on the arm-tie, and first reset spring's the other end and storage case fixed connection, the movable block slides in the storage case through first sliding tray, the demonstration bench bottom is equipped with a plurality of discharge gates.

Preferably, the collecting and closing device comprises a third sliding groove formed in the collecting box, a sliding second sliding block is arranged in the third sliding groove, a second gear belt is fixedly connected to the bottom of the second sliding block, a second return spring is arranged on the second sliding block, the other end of the second return spring is fixedly connected with the collecting box, and the second sliding block slides in the collecting box through the third sliding groove.

Preferably, the first gear belt is in meshing transmission with the rotating gear, and the first gear belt moves through the rotating gear.

Preferably, the rotating gear column is in meshed transmission with a second gear belt, and the second gear belt moves through the second gear belt.

Preferably, the bolt fixes the second rotary disc through the second fixing hole.

Preferably, the flattening device comprises a pressing plate which is lifted in the demonstration table, a fourth sliding groove is formed in the pressing plate, a sliding pressing plate is arranged in the fourth sliding groove, a third sliding block is fixedly connected to the sliding pressing plate, a compression spring is arranged on the third sliding block, the other end of the compression spring is fixedly connected with the pressing plate, a third fixing hole is formed in the third sliding block, a sliding fixing column is arranged in the third fixing hole, a telescopic rod is fixedly connected to the top of the pressing plate, the other end of the telescopic rod is fixedly connected with the top of the storage box, and the fixing column fixes the third sliding block through the third fixing hole.

The invention has the beneficial effects that:

1. according to the demonstration teaching aid, the lifting block is arranged in the fixed table and rotates to lift through the rotating gear, the lifting block lifts the demonstration table fixedly connected with the lifting block, so that the height of the demonstration table is changed, students leaning behind seats can see demonstration pictures clearly, meanwhile, the top of the demonstration table is provided with the storage box, a large amount of fine sand is stored in the storage box, gravel data columns formed by the fine sand can be demonstrated visually, digestion and absorption of students are facilitated, meanwhile, the universal wheels are arranged at the bottom of the fixed table, movement of the demonstration teaching aid is facilitated through the arrangement of the universal wheels, time is effectively saved, and teaching efficiency is improved.

2. According to the invention, the discharge port is arranged at the bottom of the demonstration table and is opened through the second sliding block, so that fine sand forming the gravel data column falls into the collection box through the discharge port, the collection box is convenient to collect the fine sand, the resource recycling is realized, the cost is effectively saved, meanwhile, the movement of the moving block is convenient for the opening and closing of the feed pipe, the height of the gravel data column in the demonstration table can be conveniently adjusted according to data, and the teaching flexibility of the demonstration table is increased.

Drawings

FIG. 1 is a schematic structural diagram of a statistical normal distribution demonstration teaching aid provided by the invention;

FIG. 2 is a front view of a statistical normal distribution demonstration teaching aid provided by the invention;

FIG. 3 is a schematic structural diagram of a height adjustment device in a statistical normal distribution demonstration teaching aid;

FIG. 4 is a schematic structural diagram of a height adjustment fixing device in a statistical normal distribution demonstration teaching aid;

FIG. 5 is a schematic diagram of a part of a statistical normal distribution demonstration teaching aid;

FIG. 6 is a schematic structural diagram of a material collecting device in a statistical normal distribution demonstration teaching aid;

fig. 7 is a schematic structural diagram of a flattening device in a statistical normal distribution demonstration teaching aid.

In the figure: 1 fixed station, 2 lifting blocks, 3 first gear belt, 4 rotating columns, 5 rotating gears, 6 first rotating disc, 7 first fixed holes, 8 fixed limiting columns, 9 connecting plates, 10 supporting springs, 11 demonstration table, 12 separating plates, 13 feeding pipes, 14 storage boxes, 15 moving blocks, 16 pulling plates, 17 first reset springs, 18 gravel data columns, 19 first sliding blocks, 20 collection boxes, 21 third sliding grooves, 22 second sliding blocks, 23 second gear belt, 24 second reset springs, 25 rotating gear columns, 26 second rotating discs, 27 second fixed holes, 28 bolts, 29 universal wheels, 30 pressing plates, 31 sliding pressing plates, 32 third sliding blocks, 33 fixed columns, 34 compression springs and 35 telescopic rods.

Detailed Description

Referring to fig. 1-6, a statistics normal distribution demonstration teaching aid comprises a fixed table 1, a lifting groove is formed in the fixed table 1, a lifting block 2 which is lifted is arranged in the lifting groove, a first gear belt 3 fixedly connected to the lifting block 2 is connected to the fixed table 1 in a rotating mode, a rotating column 4 is connected to the rotating column 4 in the rotating mode, a rotating gear 5 is fixedly connected to the rotating column 4, the first gear belt 3 is in meshing transmission with the rotating gear 5, the first gear belt 3 moves through the rotating gear 5, the rotating gear 5 fixedly connected to the rotating column 4 rotates through the rotating column 4, the rotating gear 5 rotates to enable the first gear belt 3 to move in meshing transmission with the rotating gear 5, the lifting block 2 fixedly connected to the first gear belt 3 is lifted in the lifting groove through the movement of the first gear belt 3, the lifting block 2 is lifted through the rotating gear 5 in a rotating mode, the lifting block 2 is lifted through the lifting block 2, the lifting block 11 fixedly connected to lift up and down, so that the height of the demonstration table 11 is changed, students whose seats can see pictures clearly, meanwhile, a demonstration box 14 is arranged on the top of the demonstration box, and a large amount of sands which can absorb a large amount of sands to facilitate digestion data visually;

the demonstration table 11 is internally provided with a flattening device, the flattening device comprises a pressing plate 30 which is lifted in the demonstration table 11, a fourth sliding groove is formed in the pressing plate 30, a sliding pressing plate 31 is arranged in the fourth sliding groove, a third sliding block 32 is fixedly connected to the sliding pressing plate 31, a compression spring 34 is arranged on the third sliding block 32, the other end of the compression spring 34 is fixedly connected with the pressing plate 30, a third fixed hole is formed in the third sliding block 32, a sliding fixed column 33 is arranged in the third fixed hole, a telescopic rod 35 is fixedly connected to the top of the pressing plate 30, the other end of the telescopic rod 35 is fixedly connected with the top of the storage box 14, the fixed column 33 fixes the third sliding block 32 through the third fixed hole, the sliding pressing plate 31 fixedly connected with the third sliding block 32 is moved by pulling the third sliding block 32, feeding of the feeding pipe 13 is not affected, when the feeding of the feeding pipe 13 to the demonstration table 11 is completed, the sliding pressing plate 31 slides in the pressing plate 30 through the compression spring 34, and the gravel data column 18 in the demonstration table 11 is flattened under the action of the telescopic rod 35.

A height adjusting and fixing device is arranged on the rotating column 4 and comprises a first rotating disc 6 fixedly connected with the rotating column 4, first fixing holes 7 uniformly arranged on the circumference are formed in the first rotating disc 6, a sliding fixing limiting column 8 is arranged in the first fixing holes 7, a connecting plate 9 is fixedly connected with the fixing limiting column 8, a supporting spring 10 is arranged on the connecting plate 9, the other end of the supporting spring 10 is fixedly connected with the fixed platform 1, the fixing limiting column 8 fixes the first rotating disc 6 through the first fixing holes 7, the connecting plate 9 is pulled, the fixing limiting column 8 slides out of the first fixing holes 7 under the action of the connecting plate 9, so that the first rotating disc 6 can rotate, the rotating column 4 fixedly connected with the first rotating disc 6 is rotated through the rotation of the first rotating disc 6, the connecting plate 9 is loosened, the fixing limiting column 8 fixes the first rotating disc 6 through the first fixing holes 7 under the action of the supporting spring 10, the fixing of the first rotating disc 6 fixes the rotating column 4 fixedly connected with the first rotating disc 6, the rotating column 4 is fixed with the rotating column 4, and the rotating gear fixing block 5 fixedly connected with the rotating column 4 is fixed, and the lifting fixing block 2 is fixed;

a demonstration table 11 is fixedly connected to the fixed table 1, a plurality of partition plates 12 are fixedly connected to the inside of the demonstration table 11, a feeding device is arranged at the top of the fixed table 1, gravel data columns 18 are arranged in the demonstration table 11, the feeding device comprises a feeding pipe 13 fixedly connected to the top of the demonstration table 11, a storage box 14 is fixedly connected to the feeding pipe 13, a plurality of first sliding grooves are formed in the storage box 14, sliding moving blocks 15 are arranged in the first sliding grooves, pull plates 16 are fixedly connected to the moving blocks 15, first reset springs 17 are arranged on the pull plates 16, the other ends of the first reset springs 17 are fixedly connected with the storage box 14, the moving blocks 15 slide in the storage box 14 through the first sliding grooves, the pull plates 16 are pulled, the moving blocks 15 fixedly connected with the pull plates 16 slide in the first sliding grooves, the fine sand feeding pipe falls into the demonstration table 11 through the moving blocks 13 to form the gravel data columns 18, the pull plates 16 are loosened, the moving blocks 15 cover the closed feeding pipe 13 under the action of the first reset springs 17, the moving blocks 15 move in the first sliding grooves, the fine sand feeding pipe conveniently, the gravel data columns increase of the height of the demonstration table 11, and the added data of the gravel data displayed by the demonstration table 11, and the added by the added gravel data, so that the gravel data are conveniently displayed by the gravel data, and the gravel data displayed by the gravel data displayed visually;

a plurality of discharge ports are arranged at the bottom of the demonstration platform 11, a second sliding groove is arranged on the demonstration platform 11, a sliding first sliding block 19 is arranged in the second sliding groove, the first sliding block 19 slides in the demonstration platform 11 through the second sliding groove, a collecting box 20 is fixedly connected to the first sliding block 19, a collecting and closing device is arranged in the collecting box 20, the collecting and closing device comprises a third sliding groove 21 arranged in the collecting box 20, a sliding second sliding block 22 is arranged in the third sliding groove 21, a second gear belt 23 is fixedly connected to the bottom of the second sliding block 22, a second return spring 24 is arranged on the second sliding block 22, the other end of the second return spring 24 is fixedly connected with the collecting box 20, the second sliding block 22 slides in the collecting box 20 through the third sliding groove 21, a rotating gear column 25 is rotatably connected to the collecting box 20, and the first sliding block 19 slides in the second sliding groove, the collecting box 20 fixedly connected with the first sliding block 19 slides on the demonstration platform 11, the rotation of the rotating gear column 25 enables the second gear belt 23 in meshing transmission with the rotating gear column 25 to move, the second gear belt 23 moves to enable the second sliding block 22 fixedly connected with the second gear belt 23 to slide in the third sliding groove 21, the second sliding block 22 enables the discharge port to be exposed, so that the fine sand falls into the collecting box 20 through the discharge port, when the fine sand all falls into the collecting box 20, the second sliding block 22 covers the closed discharge port again under the action of the second return spring 24, the discharge port is opened through the second sliding block 22, so that the fine sand falls into the collecting box 20 through the discharge port, the arrangement of the collecting box 20 is convenient for collecting the fine sand forming the sand data column 18, so that the recycling of resources is realized, the cost is effectively saved, a height measuring scale is engraved in the demonstration platform 11, the height measuring scale is arranged, so that the height can be displayed more accurately, and the teaching of statistics is facilitated;

the rotary gear column 25 is in meshed transmission with the second gear belt 23, the second gear belt 23 moves through the second gear belt 23, a second rotary disc 26 is fixedly connected to the rotary gear column 25, second fixed holes 27 evenly formed in the circumference are formed in the second rotary disc 26, sliding bolts 28 are arranged in the second fixed holes 27, a plurality of universal wheels 29 are arranged at the bottom of the fixed platform 1, the second rotary disc 26 is fixed through the second fixed holes 27 by the bolts 28, the second rotary disc 26 is rotated, the rotary gear column 25 fixedly connected with the second rotary disc 26 is rotated by the rotation of the second rotary disc 26, the second sliding block 22 moves under the action of the rotary gear column 25 to open the discharge port, the bolts 28 are inserted, the second rotary disc 26 is fixed through the second fixed holes 27, fine sand conveniently formed into the sand data column 18 falls into the collecting box 20 through the discharge port, the bolts 28 are pulled out, the second rotary disc 26 can rotate, the second sliding block 22 can be covered with the closed discharge port under the action of the second reset spring 24, and the fixed position of the universal wheels 29 can be moved to the appointed position of the fixed platform 1.

The working principle of the invention is as follows: pulling the connecting plate 9, making the fixed limit post 8 slide out of the first fixed hole 7 under the action of the connecting plate 9, thereby making the first rotating disk 6 rotate, the rotation of the first rotating disk 6 makes the rotating post 4 fixedly connected with the first rotating disk 6 rotate, the rotation of the rotating post 4 makes the rotating gear 5 fixedly connected with the rotating post 4 rotate, the rotation of the rotating gear 5 makes the first gear belt 3 move by meshing with the rotating gear 5, the movement of the first gear belt 3 makes the lifting block 2 fixedly connected with the first gear belt 3 lift in the lifting groove, loosening the connecting plate 9, making the fixed limit post 8 fix the first rotating disk 6 through the first fixed hole 7 under the action of the supporting spring 10, the fixation of the first rotating disk 6 makes the rotating post 4 fixedly connected with the first rotating disk 6 fixed, the fixing of the rotating post 4 makes the rotating gear 5 fixedly connected with the rotating post 4 fixed, thereby making the lifting block 2 fixed, pulling the pulling plate 16, making the moving block 15 fixedly connected with the pulling plate 16 slide in the first sliding groove, thereby making the fine sand pass through the demonstration table 13, making the sliding block 18 compress the feeding pipe 13 of the third rotating post 18, when the sliding block 32 is connected with the rotating plate 13, making the sliding block 32, making the sliding block 32 compress the sliding block 13, and the sliding block 32, the sliding block 32 which is connected with the sliding block 13, which is connected with the third sliding block 13, and the sliding block 13, the sliding block 32 which is connected with the sliding plate 32, and the sliding block 13, and the sliding block 32, the rotation of the rotating gear post 25 makes the second gear belt 23 engaged with the rotating gear post 25 to move, the second gear belt 23 moves to make the second sliding block 22 fixedly connected with the second gear belt 23 slide in the third sliding groove 21, the second sliding block 22 makes the discharge port exposed, the bolt 28 is inserted, make the bolt 28 pass through the second fixed hole 27 to fix the second rotating disc 26, thereby make the fine sand composing the gravel data post 18 fall into the collecting box 20 through the discharge port, when the fine sand all falls into the collecting box 20, the bolt 28 is pulled out, make the second rotating disc 26 rotate, make the second sliding block 22 re-cover the closed discharge port under the effect of the second reset spring 24.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (8)

1. A statistical normal distribution demonstration teaching aid comprises a fixed table (1) and is characterized in that a lifting groove is formed in the fixed table (1), lifting blocks (2) which are lifted are arranged in the lifting groove, a first gear belt (3) which is fixedly connected with the lifting blocks (2) is arranged on the lifting blocks (2), a rotating column (4) is connected in the fixed table (1) in a rotating mode, rotating gears (5) are fixedly connected with the rotating column (4), a height adjusting and fixing device is arranged on the rotating column (4), a demonstration table (11) is fixedly connected with the fixed table (1), a plurality of partition plates (12) are fixedly connected with the demonstrating table (11) in the demonstrating table, a feeding device is arranged at the top of the fixed table (1), sand and gravel data columns (18) are arranged in the demonstrating table (11), a second sliding groove is formed in the demonstrating table (11), a first sliding block (19) which slides is arranged in the second sliding groove, a hole is formed in the demonstrating table (11), a collecting box (20) is fixedly connected with the first sliding block (19), a collecting box (20) is arranged in the demonstrating table (11), a second sliding block (25) is arranged in the second sliding block (25), a second gear belt (26) which rotates uniformly and a second rotating column (26) is arranged in the rotating disc, and a sliding bolt (28) is arranged in the second fixing hole (27), and a plurality of universal wheels (29) are arranged at the bottom of the fixing table (1).

2. A statistical normal distribution demonstration teaching aid as claimed in claim 1, the height adjusting and fixing device comprises a first rotating disc (6) fixedly connected with the rotating column (4), the first rotating disc (6) is provided with first fixed holes (7) which are uniformly arranged on the circumference, and a sliding fixed limit column (8) is arranged in the first fixed hole (7), a connecting plate (9) is fixedly connected on the fixed limiting column (8), a supporting spring (10) is arranged on the connecting plate (9), and the other end of the supporting spring (10) is fixedly connected with the fixed platform (1), the fixed limiting column (8) fixes the first rotating disc (6) through the first fixed hole (7), the feeding device comprises a feeding pipe (13) fixedly connected with the top of the demonstration table (11), the feeding pipe (13) is fixedly connected with a storage box (14), the storage box (14) is provided with a plurality of first sliding grooves, and the first sliding grooves are internally provided with sliding moving blocks (15), the moving blocks (15) are fixedly connected with pull plates (16), a first return spring (17) is arranged on the pulling plate (16), and the other end of the first return spring (17) is fixedly connected with the material storage box (14), the moving block (15) slides in the storage box (14) through the first sliding groove.

3. The statistical normal distribution demonstration teaching aid according to claim 1, wherein the feeding device comprises a feeding pipe (13) fixedly connected to the top of the demonstration table (11), a storage box (14) is fixedly connected to the feeding pipe (13), a plurality of first sliding grooves are formed in the storage box (14), sliding moving blocks (15) are arranged in the first sliding grooves, a pulling plate (16) is fixedly connected to the moving blocks (15), a first return spring (17) is arranged on the pulling plate (16), the other end of the first return spring (17) is fixedly connected to the storage box (14), the moving blocks (15) slide in the storage box (14) through the first sliding grooves, and a plurality of discharge ports are formed in the bottom of the demonstration table (11).

4. A statistics normal distribution demonstration teaching aid as claimed in claim 1, wherein the collection closing device comprises a third sliding groove (21) formed in the collection box (20), a sliding second sliding block (22) is arranged in the third sliding groove (21), a second gear belt (23) is fixedly connected to the bottom of the second sliding block (22), a second return spring (24) is arranged on the second sliding block (22), the other end of the second return spring (24) is fixedly connected with the collection box (20), and the second sliding block (22) slides in the collection box (20) through the third sliding groove (21).

5. A statistical normal distribution demonstration teaching aid according to claim 1, characterized in that the first gear belt (3) is in meshing transmission with a rotating gear (5), and the first gear belt (3) moves through the rotating gear (5).

6. A statistical normal distribution demonstration teaching aid as claimed in claim 1, characterized in that the rotating gear column (25) is in meshing transmission with the second gear belt (23), and the second gear belt (23) moves through the second gear belt (23).

7. A statistical normal distribution demonstration teaching aid as claimed in claim 1, wherein the plug (28) secures the second turning disc (26) through the second securing hole (27).

8. A statistical normal distribution demonstration teaching aid as claimed in claim 1, wherein the flattening device comprises a pressing plate (30) which is lifted in a demonstration table (11), a fourth sliding groove is formed in the pressing plate (30), a sliding pressing plate (31) is arranged in the fourth sliding groove, a third sliding block (32) is fixedly connected to the sliding pressing plate (31), a compression spring (34) is arranged on the third sliding block (32), the other end of the compression spring (34) is fixedly connected with the pressing plate (30), a third fixing hole is formed in the third sliding block (32), a sliding fixing column (33) is arranged in the third fixing hole, an expansion link (35) is fixedly connected to the top of the pressing plate (30), the other end of the expansion link (35) is fixedly connected with the top of the storage box (14), and the third sliding block (32) is fixed by the fixing column (33) through the third fixing hole.

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