CN107993528A - A kind of probabilistic mathematical bar shaped statistical chart apparatus for demonstrating - Google Patents
A kind of probabilistic mathematical bar shaped statistical chart apparatus for demonstrating Download PDFInfo
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- CN107993528A CN107993528A CN201711495543.5A CN201711495543A CN107993528A CN 107993528 A CN107993528 A CN 107993528A CN 201711495543 A CN201711495543 A CN 201711495543A CN 107993528 A CN107993528 A CN 107993528A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/02—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for mathematics
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Abstract
The present invention relates to a kind of probabilistic mathematical teaching aid, in particular it is a kind of probabilistic mathematical bar shaped statistical chart apparatus for demonstrating, including underframe assemblies, bar shaped display module and positioning bull stick, multiple bar shaped display modules be may be inserted into device to show bar shaped statistical chart, and multiple bar shaped display modules can be evenly distributed with the upper end for being distributed in main transverse slat, easy to student viewing；The length of bar shaped statistical chart shown by bar shaped display module can be varied as desired in；And device can demonstrate horizontal bar chart can demonstrate vertical bar chart again.The underframe assemblies include main transverse slat, sliding rib, rotating stand rod, preceding riser, perpendicular display board and horizontal display board, the upper end of main transverse slat is provided with sliding rib, the left and right ends of main transverse slat have been fixedly connected with rotating stand rod, the left and right ends of main transverse slat front end fix two and are connected with preceding riser, horizontal display board is fixedly connected between two preceding risers, the left and right ends of horizontal display board have been fixedly connected with perpendicular display board.
Description
Technical field
The present invention relates to a kind of probabilistic mathematical teaching aid, is in particular a kind of probabilistic mathematical bar shaped statistical chart demonstration dress
Put.
Background technology
Bar shaped statistical chart is to represent certain quantity with a unit length, and it is different to be drawn as length according to the number of quantity
Vertical bar, then in sequence lines up these vertical bars.The more of various quantity are readily seen from bar shaped statistical chart
It is few.The general abbreviation bar chart of bar shaped statistical chart, is also bar chart or column diagram.One kind of Application No. CN201220523042.X
Bar shaped statistical chart demonstration device, the utility model provide a kind of bar shaped statistical chart demonstration device, belong to teaching equipment field, its structure bag
Base and the camera bellows in base are included, crisscross steel wire, the side of steel wire are vertically installed with the base
Graduated scale is vertically installed with, camera bellows is interior to be laterally evenly equipped with array flexible rule box along the direction of steel wire, is set in every group of flexible rule box
There is a 1-3 tape measure, the scale in the level height and graduated scale of the steel wire transverse steel wire corresponds, and the steel wire is indulged
It is more than the width of tape measure to the spacing of steel wire.The utility model is designed reasonably, simple in structure, easy to use, user can root
According to needing to select suitable tape measure quantity, and the tape of tape measure is pulled to the height of graduated scale mark, and is subject to navigation button
Positioning, makes bar shaped statistical chart.But this device needs are drawn bar chart on drawing with pen, and it is very numb to be demonstrated to student
It is tired.
The content of the invention
The present invention provides a kind of probabilistic mathematical bar shaped statistical chart apparatus for demonstrating, and its advantage is more to may be inserted into device
A bar shaped display module shows bar shaped statistical chart, and multiple bar shaped display modules can be evenly distributed on the upper of main transverse slat
End, easy to student viewing；The length of bar shaped statistical chart shown by bar shaped display module can be varied as desired in；And device
Not only horizontal bar chart can have been demonstrated but also vertical bar chart can be demonstrated.
The present invention relates to a kind of probabilistic mathematical teaching aid, is in particular a kind of probabilistic mathematical bar shaped statistical chart demonstration dress
Put, including underframe assemblies, bar shaped display module and positioning bull stick, multiple bar shaped display modules are may be inserted into show bar in device
Shape statistical chart, and multiple bar shaped display modules can be evenly distributed on the upper end of main transverse slat, easy to student viewing；Bar shaped is shown
The length of bar shaped statistical chart shown by component can be varied as desired in；And device can not only demonstrate horizontal bar chart but also
Vertical bar chart can be demonstrated.
The underframe assemblies include main transverse slat, sliding rib, rotating stand rod, preceding riser, perpendicular display board and horizontal display board, main transverse slat
Upper end be provided with sliding rib, the left and right ends of main transverse slat have been fixedly connected with rotating stand rod, and the left and right ends of main transverse slat front end are solid
Fixed two are connected with preceding riser, and horizontal display board is fixedly connected between two preceding risers, and the left and right ends of horizontal display board are fixed to be connected
It is connected to perpendicular display board；
The bar shaped display module, which includes slide post, belt pulley I, belt pulley II, belt, statistics bar, to be pasted, is kept off on spring
Plate, positioning round bar, trapezoidal convex block, sliding block and spring sleeve column, the lower slide of slide post are connected in sliding rib, the lower end of slide post
Belt pulley I is rotatably connected to, the upper end of slide post is rotatably connected to belt pulley II, the company of tensioning between belt pulley I and belt pulley II
Belt is connected to, the statistics bar that length is belt half is posted on belt and is pasted, the lower end of the rear end of slide post is provided with trapezoidal convex block,
Sliding block is slidably connected on trapezoidal convex block, and the upper end of sliding block is fixedly connected with spring sleeve column, and the upper end position of trapezoidal convex block is fixed
Spring overhead gage is connected with, spring sleeve column is slidably connected with spring overhead gage, and spring is socketed with spring sleeve column, and spring is located at bullet
Positioning round bar is fixedly connected between spring overhead gage and sliding block, on sliding block；
Connecting shaft, clamp nut, horizontal rib and U-shaped slot I are provided with the positioning bull stick, positioning bull stick is cuboid
Bar, the both ends for positioning bull stick have been fixedly connected with connecting shaft, and positioning bull stick is rotatably connected on two pivoted frames by two connecting shafts
Between bar, position and horizontal rib is fixedly installed on two faces of bull stick, multiple U-shaped slot I are evenly equipped with horizontal rib, one of connection
Clamp nut has been connected through a screw thread on axis.
The underframe assemblies further include left support abutment, spacing inserting column, fixing sleeve, L-shaped bearing, right support abutment, mobile bar and side
Bar, the lower end of the left end of main transverse slat are fixedly connected with left support abutment, and the left end of left support abutment is fixedly connected with fixing sleeve, and spacing inserting column is inserted
It is connected on fixing sleeve, the lower end of the right end of main transverse slat is fixedly connected with right support abutment, and the right end of right support abutment is fixedly connected with L-shaped branch
Seat, the lower end of the left and right ends of mobile bar have been fixedly connected with side rod, and two side rods are slidably connected in two rotating stand rods respectively.
The bar shaped display module, which further includes, compresses piece, gate and housing screw, the front end of slide post upper belt pulley I
Position is fixedly connected with gate, and housing screw is threadedly attached on gate, and the rear end of housing screw is fixedly connected with
Compress piece.
Ladder chute, geosynclinal block and U-shaped slot II are additionally provided with the positioning bull stick, positions and is set on the bottom surface of bull stick
There is ladder chute, multiple geosynclinal blocks are slidably connected on ladder chute, U-shaped slot II is provided with geosynclinal block, passes through screw thread on geosynclinal block
It is connected with trip bolt.
The number of U-shaped slot I on two horizontal ribs is different.
In the positioning round bar insertion U-shaped slot I or U-shaped slot II, spacing inserting column is moved to and left end side rod
When lower face is bonded, mobile bar will position round bar top to the top of U-shaped slot I or U-shaped slot II.
A kind of probabilistic mathematical bar shaped statistical chart apparatus for demonstrating of the invention has the beneficial effect that：
A kind of probabilistic mathematical bar shaped statistical chart apparatus for demonstrating of the present invention, may be inserted into multiple bar shaped display modules in device
Show bar shaped statistical chart, and multiple bar shaped display modules can be evenly distributed on the upper end of main transverse slat, easy to student viewing；Bar
The length of bar shaped statistical chart shown by shape display module can be varied as desired in；And device can both demonstrate horizontal bar
Shape figure can demonstrate vertical bar chart again.
Brief description of the drawings
The present invention will be further described in detail with specific implementation method below in conjunction with the accompanying drawings.
Fig. 1 is a kind of structure diagram one of probabilistic mathematical bar shaped statistical chart apparatus for demonstrating of the present invention；
Fig. 2 is a kind of structure diagram two of probabilistic mathematical bar shaped statistical chart apparatus for demonstrating of the present invention；
Fig. 3 is the structure diagram one of underframe assemblies；
Fig. 4 is the structure diagram two of underframe assemblies；
Fig. 5 is the structure diagram one of bar shaped display module；
Fig. 6 is the structure diagram two of bar shaped display module；
Fig. 7 is the structure diagram one of positioning bull stick；
Fig. 8 is the structure diagram two of positioning bull stick.
In figure：Underframe assemblies 1；Main transverse slat 1-1；Sliding rib 1-2；Left support abutment 1-3；Spacing inserting column 1-4；Fixing sleeve 1-5；Pivoted frame
Bar 1-6；Preceding riser 1-7；Perpendicular display board 1-8；Horizontal display board 1-9；L-shaped bearing 1-10；Right support abutment 1-11；Mobile bar 1-12；Side
Bar 1-13；Bar shaped display module 2；Slide post 2-1；Belt pulley I2-2；Belt pulley II2-3；Belt 2-4；Count bar patch 2-4-1；
Compress piece 2-5；Gate 2-6；Housing screw 2-7；Spring overhead gage 2-8；Position round bar 2-9；Trapezoidal convex block 2-10；Sliding block 2-
11；Spring sleeve column 2-12；Position bull stick 3；Connecting shaft 3-1；Clamp nut 3-2；Horizontal rib 3-3；U-shaped slot I3-4；Ladder chute
3-5；Geosynclinal block 3-6；U-shaped slot II3-7.
Embodiment
Embodiment one：
Illustrate present embodiment with reference to Fig. 1-8, the present invention relates to a kind of probabilistic mathematical teaching aid, is in particular one
Probabilistic mathematical bar shaped statistical chart apparatus for demonstrating, including underframe assemblies 1, bar shaped display module 2 and positioning bull stick 3 are planted, can in device
Bar shaped statistical chart is shown to be inserted into multiple bar shaped display modules, and multiple bar shaped display modules can be evenly distributed on main horizontal stroke
The upper end of plate, easy to student viewing；The length of bar shaped statistical chart shown by bar shaped display module can be varied as desired in；And
And device can not only demonstrate horizontal bar chart but also can demonstrate vertical bar chart.
The underframe assemblies 1 include main transverse slat 1-1, sliding rib 1-2, rotating stand rod 1-6, preceding riser 1-7, perpendicular display board 1-8
With horizontal display board 1-9, the left and right ends that the upper end of main transverse slat 1-1 is provided with sliding rib 1-2, main transverse slat 1-1 have been fixedly connected with and have turned
Hack lever 1-6, the left and right ends of main transverse slat 1-1 front ends fix two and are connected with fixation between preceding riser 1-7, two preceding riser 1-7
Horizontal display board 1-9 is connected with, the left and right ends of horizontal display board 1-9 have been fixedly connected with perpendicular display board 1-8；Perpendicular display board 1-8 and
Horizontal display board 1-9 is used for being pasted into paper slip, and the title and numeral of bar shaped statistical chart are marked.
The bar shaped display module 2 includes slide post 2-1, belt pulley I2-2, belt pulley II2-3, belt 2-4, statistics
Bar patch 2-4-1, spring overhead gage 2-8, positioning round bar 2-9, trapezoidal convex block 2-10, sliding block 2-11 and spring sleeve column 2-12, are slided
The lower slide of column 2-1 is connected on sliding rib 1-2, and the lower end of slide post 2-1 is rotatably connected to belt pulley I2-2, slide post 2-1
Upper end be rotatably connected to belt pulley II2-3, between belt pulley I2-2 and belt pulley II2-3 tensioning be connected with belt 2-4, belt
The statistics bar that length is belt 2-4 half is posted on 2-4 and pastes 2-4-1, the lower end of the rear end of slide post 2-1 is provided with trapezoidal convex block
2-10, sliding block 2-11 are slidably connected on trapezoidal convex block 2-10, and the upper end of sliding block 2-11 is fixedly connected with spring sleeve column 2-12, ladder
The upper end position of shape convex block 2-10, which is fixedly connected with spring overhead gage 2-8, spring sleeve column 2-12 and is slided with spring overhead gage 2-8, to be connected
Connect, spring is socketed with spring sleeve column 2-12, spring is solid on sliding block 2-11 between spring overhead gage 2-8 and sliding block 2-11
Surely it is connected with positioning round bar 2-9；A plurality of bar shaped statistical chart can be represented with multiple bar shaped display modules 2, multiple bar shapeds are shown
Component 2 is slidably connected on sliding rib 1-2, and belt 2-4 can be rotated on belt pulley I2-2 and belt pulley II2-3, statistics bar patch
2-4-1 is located at the length that bar is counted in the length representative bar shaped statistical chart of rotating stand rod 1-6 upper ends, and dragging belt 2-4 is rotated
The length of adjustment statistics bar.
Connecting shaft 3-1, clamp nut 3-2, horizontal rib 3-3 and U-shaped slot I3-4 are provided with the positioning bull stick 3, it is fixed
Position bull stick 3 is rectangular body rod, and the both ends of positioning bull stick 3 have been fixedly connected with connecting shaft 3-1, and positioning bull stick 3 passes through two connections
Axis 3-1 is rotatably connected between two rotating stand rod 1-6, is positioned and is fixedly installed horizontal rib 3-3, horizontal rib 3-3 on two faces of bull stick 3
On be evenly equipped with multiple U-shaped slot I3-4, be connected through a screw thread clamp nut 3-2 on one of connecting shaft 3-1.Position bull stick
3 can rotate around connecting shaft 3-1, different horizontal rib 3-3 be switched in upper end, clamp nut 3-2 can will position the position of bull stick 3
Put fixation, the positioning round bar 2-9 on multiple bar shaped display modules 2 can be inserted in multiple U-shaped slots on the horizontal rib 3-3 of same
I3-4, since multiple U-shaped slot I3-4 are distributed on the horizontal rib 3-3 of same, so being achieved that makes multiple bar shaped display modules 2
The effect being evenly distributed on main transverse slat 1-1.
The underframe assemblies 1 further include left support abutment 1-3, spacing inserting column 1-4, fixing sleeve 1-5, L-shaped bearing 1-10, right branch
Seat 1-11, mobile bar 1-12 and side rod 1-13, the lower end of the left end of main transverse slat 1-1 are fixedly connected with left support abutment 1-3, left support abutment 1-
3 left end is fixedly connected with fixing sleeve 1-5, and spacing inserting column 1-4 is plugged on fixing sleeve 1-5, the lower end of the right end of main transverse slat 1-1
Right support abutment 1-11 is fixedly connected with, the right end of right support abutment 1-11 is fixedly connected with the left and right two of L-shaped bearing 1-10, mobile bar 1-12
The lower end at end has been fixedly connected with side rod 1-13, and two side rod 1-13 are slidably connected on two rotating stand rod 1-6 respectively.Will be mobile
When bar 1-12 is pulled up, mobile bar 1-12 can release multiple positioning round bar 2-9 at U-shaped slot I3-4, inserting column 1-4 movements
To when being bonded with the lower face of left end side rod 1-13, inserting column 1-4 fixes the position of mobile bar 1-12, is so easy to multiple
Shape display module 2 unloads.When L-shaped bearing 1-10 is put downward, bar chart can be made laterally disposed, realization device can drill
Show that horizontal bar chart can demonstrate vertical bar chart again.
The bar shaped display module 2, which further includes, to be compressed on piece 2-5, gate 2-6 and housing screw 2-7, slide post 2-1
The front position of belt pulley I2-2 is fixedly connected with gate 2-6, and housing screw 2-7 is threadedly attached on gate 2-6,
The rear end of housing screw 2-7, which is fixedly connected with, compresses piece 2-5.Compression piece 2-5 can be made to be pressed in belt during turn housing screw 2-7
On 2-4, belt 2-4 is fixed.
Ladder chute 3-5, geosynclinal block 3-6 and U-shaped slot II3-7 are additionally provided with the positioning bull stick 3, positions bull stick 3
Bottom surface on be provided with ladder chute 3-5, multiple geosynclinal block 3-6 are slidably connected on ladder chute 3-5, U is provided with geosynclinal block 3-6
Trip bolt has been connected through a screw thread on shape slot II3-7, geosynclinal block 3-6.Multiple geosynclinal block 3-6 can be slided on ladder chute 3-5
Dynamic adjustment position, multiple positioning round bar 2-9 are inserted in U-shaped slot II3-7 and can be fixed on the position of bar shaped display module 2
The customized position of people, the trip bolt on geosynclinal block 3-6 can fix geosynclinal block 3-6.
The number of U-shaped slot I3-4 on two horizontal rib 3-3 is different, adapts to the bar shaped display module of varying number
2 distribution.
In the positioning round bar 2-9 insertions U-shaped slot I3-4 or U-shaped slot II3-7, spacing inserting column 1-4 is moved to
When being bonded with the lower face of left end side rod 1-13, positioning round bar 2-9 is pushed up to U-shaped slot I3-4 or U-shaped and inserted by mobile bar 1-12
The top of groove II3-7.
A kind of operation principle of probabilistic mathematical bar shaped statistical chart apparatus for demonstrating of the present invention：Multiple bar shaped display modules can be used
2 represent a plurality of bar shaped statistical chart, multiple bar shaped display modules 2 are slidably connected on sliding rib 1-2, belt 2-4 can be in belt
Rotated on wheel I2-2 and belt pulley II2-3, statistics bar patch 2-4-1 is located at the length representative bar shaped statistical chart of rotating stand rod 1-6 upper ends
The length of middle statistics bar, dragging belt 2-4 rotate the length of i.e. adjustable statistics bar.Positioning bull stick 3 can turn around connecting shaft 3-1
It is dynamic, different horizontal rib 3-3 is switched in into upper end, clamp nut 3-2 can fix the position for positioning bull stick 3, and multiple bar shapeds are shown
Show that the positioning round bar 2-9 on component 2 can be inserted in multiple U-shaped slot I3-4 on the horizontal rib 3-3 of same, since multiple U-shapeds are inserted
Groove I3-4 is distributed on the horizontal rib 3-3 of same, so being achieved that makes multiple bar shaped display modules 2 be evenly distributed in main transverse slat 1-
Effect on 1.When mobile bar 1-12 is pulled up, mobile bar 1-12 can be by multiple positioning round bar 2-9 at U-shaped slot I3-4
Releasing, inserting column 1-4 is moved to when being bonded with the lower face of left end side rod 1-13, and inserting column 1-4 fixes the position of mobile bar 1-12,
So it is easy to unload multiple bar shaped display modules 2.When L-shaped bearing 1-10 is put downward, bar chart can be made laterally disposed,
Realization device can demonstrate horizontal bar chart can demonstrate vertical bar chart again.It can make during turn housing screw 2-7
Compress piece 2-5 to be pressed on belt 2-4, belt 2-4 is fixed.Multiple geosynclinal block 3-6 can slide adjustment on ladder chute 3-5
Position, multiple positioning round bar 2-9 are inserted in can be fixed on people in U-shaped slot II3-7 by the position of bar shaped display module 2 makes by oneself
The position of justice, the trip bolt on geosynclinal block 3-6 can fix geosynclinal block 3-6.
Certainly, described above is not limitation of the present invention, and the present invention is also not limited to the example above, the art
The variations, modifications, additions or substitutions that those of ordinary skill is made in the essential scope of the present invention, fall within the guarantor of the present invention
Protect scope.
Claims (6)
1. a kind of probabilistic mathematical bar shaped statistical chart apparatus for demonstrating, including underframe assemblies (1), bar shaped display module (2) and positioning turn
Bar (3), it is characterised in that：The underframe assemblies (1) include main transverse slat (1-1), sliding rib (1-2), rotating stand rod (1-6), preceding perpendicular
Plate (1-7), perpendicular display board (1-8) and horizontal display board (1-9), the upper end of main transverse slat (1-1) are provided with sliding rib (1-2), main transverse slat
The left and right ends of (1-1) have been fixedly connected with rotating stand rod (1-6), and two connections are fixed in the left and right ends of main transverse slat (1-1) front end
There is preceding riser (1-7), horizontal display board (1-9), the left and right of horizontal display board (1-9) are fixedly connected between two preceding risers (1-7)
Both ends have been fixedly connected with perpendicular display board (1-8)；
The bar shaped display module (2) includes slide post (2-1), belt pulley I (2-2), belt pulley II (2-3), belt (2-
4), count bar patch (2-4-1), spring overhead gage (2-8), positioning round bar (2-9), trapezoidal convex block (2-10), sliding block (2-11) and
Spring sleeve column (2-12), the lower slide of slide post (2-1) are connected in sliding rib (1-2), and the lower end of slide post (2-1), which rotates, to be connected
Belt pulley I (2-2) is connected to, the upper end of slide post (2-1) is rotatably connected to belt pulley II (2-3), belt pulley I (2-2) and belt
Tensioning is connected with belt (2-4) between wheel II (2-3), and the statistics bar that length is belt (2-4) half is posted on belt (2-4) and is pasted
(2-4-1), the lower end of the rear end of slide post (2-1) are provided with trapezoidal convex block (2-10), and sliding block (2-11) is slidably connected at trapezoidal
On convex block (2-10), the upper end of sliding block (2-11) is fixedly connected with spring sleeve column (2-12), the upper end position of trapezoidal convex block (2-10)
Put and be fixedly connected with spring overhead gage (2-8), spring sleeve column (2-12) is slidably connected with spring overhead gage (2-8), spring sleeve column
Spring is socketed with (2-12), spring is located between spring overhead gage (2-8) and sliding block (2-11), fixed on sliding block (2-11) to connect
It is connected to positioning round bar (2-9)；
Connecting shaft (3-1), clamp nut (3-2), horizontal rib (3-3) and U-shaped slot I (3- are provided with the positioning bull stick (3)
4) it is rectangular body rod, to position bull stick (3), and the both ends of positioning bull stick (3) have been fixedly connected with connecting shaft (3-1), positioning bull stick (3)
It is fixed on two faces of positioning bull stick (3) to set between being rotatably connected on two rotating stand rods (1-6) by two connecting shafts (3-1)
Horizontal rib (3-3) is equipped with, multiple U-shaped slot I (3-4) are evenly equipped with horizontal rib (3-3), pass through spiral shell on one of connecting shaft (3-1)
Line is connected with clamp nut (3-2).
A kind of 2. probabilistic mathematical bar shaped statistical chart apparatus for demonstrating according to claim 1, it is characterised in that：The chassis
Component (1) further includes left support abutment (1-3), spacing inserting column (1-4), fixing sleeve (1-5), L-shaped bearing (1-10), right support abutment (1-
11), mobile bar (1-12) and side rod (1-13), the lower end of the left end of main transverse slat (1-1) are fixedly connected with left support abutment (1-3), left
The left end of bearing (1-3) is fixedly connected with fixing sleeve (1-5), and spacing inserting column (1-4) is plugged on fixing sleeve (1-5), main transverse slat
The lower end of the right end of (1-1) is fixedly connected with right support abutment (1-11), and the right end of right support abutment (1-11) is fixedly connected with L-shaped bearing
(1-10), the lower end of the left and right ends of mobile bar (1-12) have been fixedly connected with side rod (1-13), and two side rods (1-13) are respectively
It is slidably connected on two rotating stand rods (1-6).
A kind of 3. probabilistic mathematical bar shaped statistical chart apparatus for demonstrating according to claim 1, it is characterised in that：The bar shaped
Display module (2), which further includes, compresses piece (2-5), gate (2-6) and housing screw (2-7), slide post (2-1) upper belt pulley I
The front position of (2-2) is fixedly connected with gate (2-6), and housing screw (2-7) is threadedly attached in gate (2-6)
On, the rear end of housing screw (2-7), which is fixedly connected with, compresses piece (2-5).
A kind of 4. probabilistic mathematical bar shaped statistical chart apparatus for demonstrating according to claim 2, it is characterised in that：The positioning
Ladder chute (3-5), geosynclinal block (3-6) and U-shaped slot II (3-7) are additionally provided with bull stick (3), on the bottom surface for positioning bull stick (3)
Ladder chute (3-5) is provided with, multiple geosynclinal blocks (3-6) are slidably connected on ladder chute (3-5), U is provided with geosynclinal block (3-6)
Shape slot II (3-7), has been connected through a screw thread trip bolt on geosynclinal block (3-6).
A kind of 5. probabilistic mathematical bar shaped statistical chart apparatus for demonstrating according to claim 1, it is characterised in that：Described two
The number of U-shaped slot I (3-4) on horizontal rib (3-3) is different.
A kind of 6. probabilistic mathematical bar shaped statistical chart apparatus for demonstrating according to claim 4, it is characterised in that：The positioning
In round bar (2-9) insertion U-shaped slot I (3-4) or U-shaped slot II (3-7), spacing inserting column (1-4) is moved to and left end side rod
During the lower face fitting of (1-13), mobile bar (1-12) will position round bar (2-9) top to U-shaped slot I (3-4) or U-shaped slot
The top of II (3-7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711495543.5A CN107993528B (en) | 2017-12-31 | 2017-12-31 | A kind of probabilistic mathematical bar shaped statistical chart apparatus for demonstrating |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711495543.5A CN107993528B (en) | 2017-12-31 | 2017-12-31 | A kind of probabilistic mathematical bar shaped statistical chart apparatus for demonstrating |
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| CN107993528B CN107993528B (en) | 2019-09-24 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111243391A (en) * | 2020-03-12 | 2020-06-05 | 重庆第二师范学院 | Mathematical probability bar statistical chart presentation device |
| CN113808505A (en) * | 2021-09-23 | 2021-12-17 | 杨筱婧 | Data statistics device for human resource planning |
| CN115027169A (en) * | 2022-06-28 | 2022-09-09 | 哈尔滨学院 | Mathematics plotter |
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| CN111243391A (en) * | 2020-03-12 | 2020-06-05 | 重庆第二师范学院 | Mathematical probability bar statistical chart presentation device |
| CN113808505A (en) * | 2021-09-23 | 2021-12-17 | 杨筱婧 | Data statistics device for human resource planning |
| CN115027169A (en) * | 2022-06-28 | 2022-09-09 | 哈尔滨学院 | Mathematics plotter |
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