CN205487004U - Linear algebra teaching is with combination formula teaching aid - Google Patents
Linear algebra teaching is with combination formula teaching aid Download PDFInfo
- Publication number
- CN205487004U CN205487004U CN201620154152.1U CN201620154152U CN205487004U CN 205487004 U CN205487004 U CN 205487004U CN 201620154152 U CN201620154152 U CN 201620154152U CN 205487004 U CN205487004 U CN 205487004U
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- linear algebra
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- round bar
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Abstract
The utility model provides a linear algebra teaching is with combination formula teaching aid, which belongs to the field of teaching tools, the problem of exist at linear algebra teaching in -process at present is solved, it contains the straight board of many vertical settings, many straight boards connect gradually through the elastic band of many horizontal settings, the surface of every straight board is the blackboard, the surface is write to blanks etc, it connects through two telescopic links to lie in two straight boards in the outside, all be provided with length positioner on every telescopic link, two tops of straightening boards lieing in the outermost side set up a hook plate respectively, the utility model is used for the linear algebra teaching.
Description
Technical field
This utility model belongs to educational aid field, is specifically related to a kind of linear algebra teaching combined teaching aid.
Background technology
Linear algebra is one of course important in College Maths; at present during linear algebra teaching; the example that often hand-written determinant, matrix, system of linear equations etc. need ranks to align on blackboard; the mistake of ranks misalignment even serial tandem easily occurs during hand-written; have a strong impact on teaching, the most therefore waste a large amount of valuable hours of instruction.
Summary of the invention
The purpose of this utility model is to solve at present the problems referred to above present in the linear algebra teaching process, it is provided that a kind of linear algebra teaching combined teaching aid, and its technical scheme is as follows:
nullA kind of linear algebra teaching combined teaching aid，It comprises many longitudinally disposed straight plates，Many straight plates are sequentially connected with by the elastic band of many horizontally sets，The surface of every straight plate is blackboard、The writing surfaces such as blank，It is positioned at outermost two straight plates to be connected by two expansion links，Every expansion link is provided with length positioning device，Every expansion link comprises the inner tube of an outer tube and one and outer tube grafting，The most also it is set with circular and that external diameter is identical with the external diameter of an outer tube catch，The end face relative with catch of outer tube is inclined-plane，Although catch suit can slide on inner pipe，But owing to the end face relative with catch of outer tube is inclined-plane，So outer tube can only be with the edge of point cantact catch，So catch can play good position-limiting action，Thus control the length of expansion link，Extremely low using this structure as length positioning device cost；It is respectively provided with a hook plate being positioned at above outermost two straight plates, upper side frame for hook blackboard, it is provided with longitudinal through hole being positioned at outermost two straight plates, a piece round bar is set in the lower end of each hook plate, one end of round bar is fixing with hook plate to be connected, the external diameter of round bar is less than the diameter of through hole, in the through hole of the straight plate that round bar is plugged on correspondence, the lower end of round bar is connected with the upper end of extension spring, the lower end of extension spring is connected with rope, rope is provided with multiple pin, the diameter of each pin is less than the diameter of through hole, pin is made to be inserted in through hole, the length of each pin is more than the diameter of through hole, the centre position of each pin is fixing with rope to be connected, make pin that the effect stopping straight plate time vertical, can be played with rope.
The beneficial effects of the utility model are: can guarantee that hand-written during do not have the mistake of ranks misalignment, make teaching to be smoothed out, the hours of instruction of preciousness will not be wasted；Owing to straight plate is connected by elastic band, so the length in each space can be controlled by the length changing expansion link simultaneously, and teaching aid upright position on blackboard can be adjusted very easily by selecting different pins；This teaching aid also has the advantage of low cost, is suitable for popularity and uses.
Accompanying drawing illustrates:
Fig. 1 is overall schematic of the present utility model；
Fig. 2 is the enlarged drawing of the straight Board position of Fig. 1；
Fig. 3 is the length location schematic diagram of expansion link；
Fig. 4 is the connection diagram of hook plate and straight plate；
Fig. 5 is use state diagram of the present utility model.
Detailed description of the invention:
nullReferring to figs. 1 through Fig. 5，A kind of linear algebra teaching combined teaching aid，It comprises many longitudinally disposed straight plates 1，Many straight plates 1 are sequentially connected with by the elastic band 2 of many horizontally sets，The surface of every straight plate 1 is blackboard、The writing surfaces such as blank，It is positioned at outermost two straight plates 1 to be connected by two expansion links 3，Every expansion link 3 is provided with length positioning device，Every expansion link 3 comprises inner tube 3-2 of an outer tube 3-1 and one and outer tube 3-1 grafting，Inner tube 3-2 is also set with circular and that external diameter is identical with the external diameter of an outer tube 3-1 catch 3-3，The end face relative with catch 3-3 of outer tube 3-1 is inclined-plane，Can slide although catch 3-3 is sleeved in inner tube 3-2，But owing to the end face relative with catch 3-3 of outer tube 3-1 is inclined-plane，So outer tube 3-1 can only be with the edge of point cantact catch 3-3，So catch 3-3 can play good position-limiting action，Thus control the length of expansion link 3，Extremely low using this structure as length positioning device cost；nullIt is respectively provided with a hook plate 4 being positioned at above outermost two straight plates 1，Upper side frame for hook blackboard 5，It is provided with longitudinal through hole 1-1 being positioned at outermost two straight plates 1，In the lower end of each hook plate 4, a round bar 4-1 is set，One end of round bar 4-1 is fixing with hook plate 4 to be connected，The external diameter of the round bar 4-1 diameter less than through hole 1-1，In the through hole 1-1 of the straight plate 1 that round bar 4-1 is plugged on correspondence，The lower end of round bar 4-1 is connected with the upper end of extension spring 4-2，The lower end of extension spring 4-2 is connected with rope 4-3，Rope 4-3 is provided with multiple pin 4-3-1，The diameter of each pin 4-3-1 diameter less than through hole 1-1，Pin 4-3-1 is made to be inserted in through hole 1-1，The length of each pin 4-3-1 diameter more than through hole 1-1，The centre position of each pin 4-3-1 is fixing with rope 4-3 to be connected，The effect stopping straight plate 1 can be played when making pin 4-3-1 vertical with rope 4-3.
Preferably, the straight plate 1 in addition to being positioned at outermost two straight plates 1 all uses the lightweight materials such as carbon fiber, prevents the centre position of elastic band 2 to be bent downwardly.
Claims (2)
1. a linear algebra teaching combined teaching aid, it is characterized in that it comprises many longitudinally disposed straight plates (1), many straight plates (1) are sequentially connected with by the elastic band (2) of many horizontally sets, the surface of every straight plate (1) is writing surface, it is positioned at outermost two straight plates (1) to be connected by two expansion links (3), every expansion link (3) is provided with length positioning device；nullIt is respectively provided with a hook plate (4) in the top being positioned at outermost two straight plates (1)，It is provided with longitudinal through hole (1-1) being positioned at outermost two straight plates (1)，A piece round bar (4-1) is set in the lower end of each hook plate (4)，One end of round bar (4-1) is fixing with hook plate (4) to be connected，The external diameter of round bar (4-1) is less than the diameter of through hole (1-1)，In the through hole (1-1) of the straight plate (1) that round bar (4-1) is plugged on correspondence，The lower end of round bar (4-1) is connected with the upper end of extension spring (4-2)，The lower end of extension spring (4-2) is connected with rope (4-3)，Rope (4-3) is provided with multiple pin (4-3-1)，The diameter of each pin (4-3-1) is less than the diameter of through hole (1-1)，The length of each pin (4-3-1) is more than the diameter of through hole (1-1)，The centre position of each pin (4-3-1) is fixing with rope (4-3) to be connected.
2. a kind of linear algebra teaching combined teaching aid, it is characterized in that every expansion link (3) comprises the inner tube (3-2) of an outer tube (3-1) and one and outer tube (3-1) grafting, also being set with circular and that external diameter is identical with the external diameter of outer tube (3-1) catch (3-3) in inner tube (3-2), the end face relative with catch (3-3) of outer tube (3-1) is inclined-plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620154152.1U CN205487004U (en) | 2016-03-01 | 2016-03-01 | Linear algebra teaching is with combination formula teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620154152.1U CN205487004U (en) | 2016-03-01 | 2016-03-01 | Linear algebra teaching is with combination formula teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205487004U true CN205487004U (en) | 2016-08-17 |
Family
ID=56658793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620154152.1U Expired - Fee Related CN205487004U (en) | 2016-03-01 | 2016-03-01 | Linear algebra teaching is with combination formula teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205487004U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111653160A (en) * | 2020-07-27 | 2020-09-11 | 哈尔滨学院 | Linear algebra presentation device |
-
2016
- 2016-03-01 CN CN201620154152.1U patent/CN205487004U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111653160A (en) * | 2020-07-27 | 2020-09-11 | 哈尔滨学院 | Linear algebra presentation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20170301 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |