CN201274106Y - Metal cold and hot deforming demonstrator - Google Patents
Metal cold and hot deforming demonstrator Download PDFInfo
- Publication number
- CN201274106Y CN201274106Y CNU2008200642802U CN200820064280U CN201274106Y CN 201274106 Y CN201274106 Y CN 201274106Y CN U2008200642802 U CNU2008200642802 U CN U2008200642802U CN 200820064280 U CN200820064280 U CN 200820064280U CN 201274106 Y CN201274106 Y CN 201274106Y
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Abstract
The utility model relates to a demonstrating device for indicating the cold and hot deformation of the metal, in particular to a demonstrating device which can amplifies the slight change of the length of a metal strip by ten times through the swinging of a pointer and lead an observer to be capable of observing the process of cold and hot deformation of the metal. The demonstrating device is fixed with a vertical column and a dial plate on a bottom plate thereof; the dial plate is connected with the pointer by a pointer firmware and the pointer can be rotated; the tail part of the pointer is provided with the metal strip and the pointer firmware, which are used for fixing the two ends of the metal strip together with the firmware of the vertical column (the length between A and B is 20cm); the top part of the pointer is 10cm in length, the tail part of the pointer is 1cm in length and according to the principle that the proportion of the corresponding edges of similar triangles is equal, the length of the metal strip of the top part of the pointer is amplified by ten times through expansion on heating and contraction on cooling. When the metal strip is 10 to 20cm, the vertical column can be connected with a spare hole of the vertical column. The demonstrating device for indicating the cold and hot deformation of the metal is particularly suitable for demonstrating the characteristics of the cold and hot deformation of the metal to students in teaching mechanisms of schools and the like, also can be used for exploring or measuring the ratio of the cold and hot deformation of the length of different metal strips by students independently and has simple structure, low cost and easy promotion and use.
Description
Technical field
The utility model relates to a kind of apparatus for demonstrating of indicating cold and hot metal deformation, and especially length variations that can bonding jumper is trickle is amplified 10 times by the swing of pointer, allows the observer more can see the process of cold and hot metal deformation intuitively.
Background technology
At present, known metal deformation demonstration device has only " copper ball demonstrating expansion on heating and contraction on cooling device ", it mainly utilizes copper ball heating back can not pass the heat expansion phenomenon that iron ring is demonstrated metal because of volumetric expansion, demonstrates the shrinkage phenomenon of metal by having passed iron ring again after the cooling.Its limitation only is can not to demonstrate other metals, and mainly to demonstrate the three-dimensional breathing result of copper the demonstration of expanding with heat and contract with cold of copper, and heat time heating time is long, can only see the result that copper ball expands with heat and contract with cold, and can not be used to observe the process that copper ball expands with heat and contract with cold.
Summary of the invention
Can only demonstrate a kind of three-dimensional breathing result of metal and the deficiency of growing heat time heating time in order to overcome existing copper ball demonstrating expansion on heating and contraction on cooling device, the utility model especially can bonding jumper is trickle the swing of length variations by pointer amplify 10 times, allow the observer more can see the process of cold and hot metal deformation intuitively.Need only diameter of section and all can demonstrate greater than the metal of 10CM is rectangular, and not only be applicable to the expansion and contraction property of metals such as demonstration copper, iron, also can demonstrate the special nature of antimony and bismuth pyrocondensation cold expanding less than 1CM, length.
The technical scheme that its technical matters that solves the utility model adopts is: go up vertical columns (2) and index dial (4) respectively at base plate (1), go up with pointer firmware (7) concatenation pointer at index dial (4), pointer is rotatable; Load onto bonding jumper and pointer firmware (5) at pointer afterbody (6), with the common fixing metal bar (11) of the firmware (12) on the column, and the length of AB point-to-point transmission is 20CM on the bonding jumper (11), is convenient to calculate the breathing ratio of bonding jumper (11); The long 10CM in pointer top (8), the long 1CM of pointer afterbody (6) is according to the principle of " being in equal proportions of similar triangles corresponding sides ", when bonding jumper expansion 1MM, pointer afterbody (6) rotates counterclockwise 1MM, and pointer top (8) rotate counterclockwise 10MM on expansion scale (9); When bonding jumper shortened 1MM, pointer afterbody (6) clockwise rotated 1MM, and pointer top (8) clockwise rotate 10MM dwindling on the scale (10).When bonding jumper can be connected column the standby hole of column (3) less than 20CM during greater than 10CM.
The beneficial effects of the utility model are, can ocular demonstration indication cold and hot metal deformation processes, and especially length variations that can bonding jumper is trickle is amplified 10 times by the swing of pointer, allows the observer more can see the process of cold and hot metal deformation intuitively.Need only diameter of section and all can demonstrate greater than the metal of 10CM is rectangular, and not only be applicable to the expansion and contraction property of metals such as demonstration copper, iron, also can demonstrate the special nature of antimony and bismuth pyrocondensation cold expanding less than 1CM, length.Be particularly suitable for educational institutions such as school to the characteristic that the student demonstrates cold and hot metal deformation, also can be used for the ratio that the student independently probed into or measured the cold and hot deformation of different metal bar length.And simple in structure, cheap, be easy to promote the use of.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural drawing of the present utility model.Among the figure, (1) base plate, (2) column, the standby hole of (3) column, (4) index dial, (5) bonding jumper and pointer firmware, (6) pointer afterbody, (7) pointer firmware, (8) pointer top, (9) expansion scale, (10) dwindle scale, (11) bonding jumper, (12) firmware, and the length between bonding jumper two firmware point A, B is 20CM.
Fig. 2 is the synoptic diagram of first embodiment.
Fig. 3 is the synoptic diagram of second embodiment.
Fig. 4 is the synoptic diagram of the 3rd embodiment.
Embodiment
In first embodiment shown in Figure 2, bonding jumper is heated only to expand and has grown 2.3MM, and the pointer top but shows to expand has grown 23MM, has amplified 10 times, and the heat expansion process is very directly perceived.(also can simply measure the heat expansion ratio of this bonding jumper.)
In second embodiment shown in Figure 3, bonding jumper is caught a cold and has only been shortened 1.3MM, and the pointer top but shows has shortened 13MM, has amplified 10 times, and the shrinkage process is very directly perceived.(also can simply measure the shrinkage ratio of this bonding jumper.)
In the 3rd embodiment shown in Figure 4,, only need column is connected the standby hole of column when bonding jumper also can be measured and be demonstrated during greater than 10CM less than 20CM.Catch a cold when bonding jumper and only to have shortened 1MM, the pointer top but shows has shortened 10MM, has amplified 10 times, and the shrinkage process is very directly perceived.(also can simply measure the shrinkage ratio of this bonding jumper.)
Claims (2)
1. apparatus for demonstrating of indicating cold and hot metal deformation, difference vertical columns and index dial on base plate, with pointer firmware concatenation pointer, pointer is rotatable on the index dial, and load onto bonding jumper and pointer firmware at the pointer afterbody, with the common fixing metal bar of the firmware on the column.
2. cold and hot metal deformation demonstration device according to claim 1 is characterized in that: the long 10CM in pointer top, the long 1CM of pointer afterbody is when bonding jumper can be connected column the standby hole of column less than 20CM during greater than 10CM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200642802U CN201274106Y (en) | 2008-07-17 | 2008-07-17 | Metal cold and hot deforming demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200642802U CN201274106Y (en) | 2008-07-17 | 2008-07-17 | Metal cold and hot deforming demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201274106Y true CN201274106Y (en) | 2009-07-15 |
Family
ID=40884449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200642802U Expired - Fee Related CN201274106Y (en) | 2008-07-17 | 2008-07-17 | Metal cold and hot deforming demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201274106Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102024361A (en) * | 2010-11-29 | 2011-04-20 | 罗克斌 | Instrument for demonstrating solid expansion on and contraction on cooling |
| CN109147508A (en) * | 2018-09-17 | 2019-01-04 | 胡兴源 | One kind is expanded with heat and contract with cold and pyrocondensation cold expanding experimental demonstration device |
| CN109545048A (en) * | 2018-12-27 | 2019-03-29 | 钱俊伟 | A kind of metal wire expansion demonstration device applied to student instruction |
| CN110988020A (en) * | 2019-12-23 | 2020-04-10 | 广西民族大学 | Multifunctional thermal expansion experiment instrument |
-
2008
- 2008-07-17 CN CNU2008200642802U patent/CN201274106Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102024361A (en) * | 2010-11-29 | 2011-04-20 | 罗克斌 | Instrument for demonstrating solid expansion on and contraction on cooling |
| CN109147508A (en) * | 2018-09-17 | 2019-01-04 | 胡兴源 | One kind is expanded with heat and contract with cold and pyrocondensation cold expanding experimental demonstration device |
| CN109545048A (en) * | 2018-12-27 | 2019-03-29 | 钱俊伟 | A kind of metal wire expansion demonstration device applied to student instruction |
| CN110988020A (en) * | 2019-12-23 | 2020-04-10 | 广西民族大学 | Multifunctional thermal expansion experiment instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090715 Termination date: 20100717 |