CN204010424U - Demonstration bar for mathematical education - Google Patents
Demonstration bar for mathematical education Download PDFInfo
- Publication number
- CN204010424U CN204010424U CN201420421772.8U CN201420421772U CN204010424U CN 204010424 U CN204010424 U CN 204010424U CN 201420421772 U CN201420421772 U CN 201420421772U CN 204010424 U CN204010424 U CN 204010424U
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- CN
- China
- Prior art keywords
- mobile jib
- connects
- connecting link
- extension rod
- bar
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- Expired - Fee Related
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Abstract
Demonstration bar for mathematical education, its composition comprises: mobile jib (1), described mobile jib connects the strong point of bracing or strutting arrangement, the center of the front-end and back-end of described mobile jib all has hole, described hole interference fit connects one end of connecting link (2), the other end of described connecting link has screw thread, described connecting link cover connects iron plate (3), described iron plate vertically connects pawl (4), the front-end and back-end of described mobile jib all have spliced eye (5), described connection pawl inserts in described spliced eye and uses screw (6) fixing, the other end of described connecting link connects the front end of extension rod (7).The utility model is for mathematical education.
Description
Technical field
the utility model relates to a kind of mathematical education demonstration bar.
Background technology
mathematics teacher, in the time saying that solution formula calculates, only goes to explain some computing formula of mathematics with language, that student understands is slow, grasp slow, do not allow easy to learnly to understand.If remove to understand formula principle by the literal meaning, student need to have very abundant imagination, can well understand and grasp, and teaching efficiency is bad.
Summary of the invention
the purpose of this utility model is to provide a kind ofly can demonstrate the mathematical education demonstration bar that makes student's fast understanding by practical operation.
above-mentioned object realizes by following technical scheme:
demonstration bar for a kind of mathematical education, its composition comprises: mobile jib, described mobile jib connects the strong point of bracing or strutting arrangement, the center of the front-end and back-end of described mobile jib all has hole, described hole interference fit connects one end of connecting link, the other end of described connecting link has screw thread, described connecting link cover connects iron plate, described iron plate is connection pawl vertically, the front-end and back-end of described mobile jib all have spliced eye, described connection pawl inserts in described spliced eye and is screwed, and the other end of described connecting link connects the front end of extension rod.
demonstration bar for described mathematical education, the front end of described extension rod connects magnetic sheet, iron plate described in described magnetic sheet adhesive, the center of described extension rod front end and described magnetic sheet all has threaded hole, and described threaded hole connects described threaded one end of connecting link.
demonstration bar for described mathematical education, described bracing or strutting arrangement comprises 4 support columns, between support column described in 2, connect by support bar, the central cross cross-contact of 2 support bars forms central point, described central point all has concentric open-work with the center of described mobile jib, described concentric open-work coupling bolt, the described fixing described mobile jib of bolt and described support bar, described support column top has groove, described support bar snaps in described groove and is screwed, and the bottom surface of 4 support columns in one plane.
demonstration bar for described mathematical education, the front-end and back-end of described mobile jib and described extension rod are all connected handle, the described mobile jib front-end and back-end equal with described extension rod are all connected seat surface, described seat surface is positioned at after described handle, and the rear end of described mobile jib and described extension rod is all connected counterweight hook.
beneficial effect:
1. the utility model adopts connection pawl, iron plate, magnetic sheet, connecting link make being connected firmly between mobile jib and extension rod, seamless, and demonstration formula of mathematical truly, intuitively, easily understand.
one end of the utility model mobile jib installs extension rod additional, and the other end does not connect extension rod, makes the arm of force difference at bar two ends, the formula of mathematical real result of demonstration, and bar formula of mathematical is easily understood.
the counterweight that the rear end of mobile jib of the present utility model and extension rod is connected is linked up with after hanging up counterweight, and whether the power that can measure two ends use is identical, can impel student vividly to understand formula of mathematical.
the utility model is formula of mathematical numerical value difference when respectively the length of the bar at test center point two ends is identical or different, can make student well understand the relation of formula of mathematical, intuitively, easily grasp.
brief description of the drawings:
accompanying drawing 1 is the structural representation of this product.
accompanying drawing 2 is vertical views of accompanying drawing 1.
embodiment:
embodiment 1:
demonstration bar for a kind of mathematical education, its composition comprises: mobile jib 1, described mobile jib connects the strong point of bracing or strutting arrangement, the center of the front-end and back-end of described mobile jib all has hole, described hole interference fit connects one end of connecting link 2, the other end of described connecting link has screw thread, described connecting link cover connects iron plate 3, described iron plate vertically connects pawl 4, the front-end and back-end of described mobile jib all have spliced eye 5, described connection pawl inserts in described spliced eye and uses screw 6 fixing, and the other end of described connecting link connects the front end of extension rod 7.Iron plate and connecting link are welded to connect, solid and reliable.
embodiment 2:
demonstration bar for mathematical education described in embodiment 1, the front end of described extension rod connects magnetic sheet 8, iron plate described in described magnetic sheet adhesive, the center of described extension rod front end and described magnetic sheet all has threaded hole, and described threaded hole connects described threaded one end of connecting link.
embodiment 3:
demonstration bar for mathematical education described in embodiment 1, described bracing or strutting arrangement comprises 4 support columns 9, between support column described in 2, connect by support bar 10, the central cross cross-contact of 2 support bars forms central point, described central point all has concentric open-work with the center of described mobile jib, described concentric open-work coupling bolt 11, the described fixing described mobile jib of bolt and described support bar, described support column top has groove 12, described support bar snaps in described groove and is screwed, and the bottom surface of 4 support columns in one plane.
embodiment 4:
demonstration bar for mathematical education described in embodiment 1 or 2, the front-end and back-end of described mobile jib and described extension rod are all connected handle 13, the described mobile jib front-end and back-end equal with described extension rod are all connected seat surface 14, described seat surface is positioned at after described handle, and the rear end of described mobile jib and described extension rod is all connected counterweight hook 15.
Claims (4)
1. a demonstration bar for mathematical education, its composition comprises: mobile jib, it is characterized in that: described mobile jib connects the strong point of bracing or strutting arrangement, the center of the front-end and back-end of described mobile jib all has hole, described hole interference fit connects one end of connecting link, the other end of described connecting link has screw thread, described connecting link cover connects iron plate, described iron plate is connection pawl vertically, the front-end and back-end of described mobile jib all have spliced eye, described connection pawl inserts in described spliced eye and is screwed, the other end of described connecting link connects the front end of extension rod.
2. demonstration bar for mathematical education according to claim 1, it is characterized in that: the front end of described extension rod connects magnetic sheet, iron plate described in described magnetic sheet adhesive, the center of described extension rod front end and described magnetic sheet all has threaded hole, and described threaded hole connects described threaded one end of connecting link.
3. demonstration bar for mathematical education according to claim 2, it is characterized in that: described bracing or strutting arrangement comprises 4 support columns, between support column described in 2, connect by support bar, the central cross cross-contact of 2 support bars forms central point, described central point all has concentric open-work with the center of described mobile jib, described concentric open-work coupling bolt, the described fixing described mobile jib of bolt and described support bar, described support column top has groove, described support bar snaps in described groove and is screwed, the bottom surface of 4 support columns in one plane.
4. demonstration bar for mathematical education according to claim 3, it is characterized in that: the front-end and back-end of described mobile jib and described extension rod are all connected handle, the described mobile jib front-end and back-end equal with described extension rod are all connected seat surface, described seat surface is positioned at after described handle, and the rear end of described mobile jib and described extension rod is all connected counterweight hook.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420421772.8U CN204010424U (en) | 2014-07-29 | 2014-07-29 | Demonstration bar for mathematical education |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420421772.8U CN204010424U (en) | 2014-07-29 | 2014-07-29 | Demonstration bar for mathematical education |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204010424U true CN204010424U (en) | 2014-12-10 |
Family
ID=52050390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420421772.8U Expired - Fee Related CN204010424U (en) | 2014-07-29 | 2014-07-29 | Demonstration bar for mathematical education |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204010424U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360330A (en) * | 2019-06-12 | 2019-10-22 | 刘丽 | Novel oil production tubing string connecting valve and application method |
-
2014
- 2014-07-29 CN CN201420421772.8U patent/CN204010424U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360330A (en) * | 2019-06-12 | 2019-10-22 | 刘丽 | Novel oil production tubing string connecting valve and application method |
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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: 20141210 Termination date: 20160729 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |