CN219936569U - Structural dynamic characteristic teaching device - Google Patents
Structural dynamic characteristic teaching device Download PDFInfo
- Publication number
- CN219936569U CN219936569U CN202321161295.1U CN202321161295U CN219936569U CN 219936569 U CN219936569 U CN 219936569U CN 202321161295 U CN202321161295 U CN 202321161295U CN 219936569 U CN219936569 U CN 219936569U
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- CN
- China
- Prior art keywords
- overhanging
- damper
- square
- shaped thick
- steel plate
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 78
- 239000010959 steel Substances 0.000 claims abstract description 78
- 238000013016 damping Methods 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 8
- 229910052721 tungsten Inorganic materials 0.000 claims description 8
- 239000010937 tungsten Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
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- Instructional Devices (AREA)
Abstract
The utility model discloses a structural dynamic characteristic teaching device which comprises a first device and a second device, wherein the first device comprises a bottom plate with a bolt hole at the bottom, a trapezoid body is arranged on the surface of the bottom plate, steel bars with different lengths are arranged on the trapezoid body, and the top of the steel bar is square; the device II comprises a U-shaped thick steel plate at the bottom and the top, the U-shaped thick steel plates are connected through thin steel plates at two sides to form a square frame structure, an overhanging damper bracket is arranged on the U-shaped thick steel plate, the overhanging damper bracket above and the overhanging damper bracket below are in axisymmetric structures, and an injector is arranged between the overhanging damper brackets. The device is small in size, and can be displayed in a classroom by a teacher, so that influences of rigidity, damping and mass on structural dynamic characteristics are truly seen and felt.
Description
Technical Field
The utility model relates to the technical field of building teaching devices, in particular to a structural dynamic characteristic teaching device.
Background
In the teaching process of civil engineering professional courses, the dynamic characteristic of the structure is one of the sections indispensable in teaching. However, due to the abstract concept, it is difficult for students to fully understand three factors affecting the dynamic characteristics in the teaching process of theoretical courses: stiffness, damping, mass. While text knowledge is relatively boring and difficult to understand, learning is performed through additional practice courses, which tend to be long in time span, and the test apparatus is large in size and high in test cost, such as the apparatus CN203562132U.
Disclosure of Invention
In order to overcome the problems existing in the prior art, the utility model aims to provide the structural dynamic characteristic teaching device which has the characteristics of small volume, light weight, portability and simple installation and operation;
because the device is small in size, the device can be displayed in a class by a teacher, so that the influence of rigidity, damping and mass on structural dynamic characteristics is truly seen and felt.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the device I comprises a bottom plate 1 with bolt holes at the bottom, a trapezoid body 2 is arranged on the surface of the bottom plate 1, steel bars 3 with different lengths are arranged on the trapezoid body 2, and a cube 4 is arranged at the top of the steel bar 3;
the device II comprises a U-shaped thick steel plate 6 at the bottom and the top, wherein the U-shaped thick steel plate 6 is connected through thin steel plates 5 at the two sides to form a square frame structure, an overhanging damper bracket 8 is arranged on the U-shaped thick steel plate 6, the overhanging damper bracket 8 above and the overhanging damper bracket 8 below are in axisymmetric structures, and an injector 7 is arranged between the overhanging damper brackets 8.
The device I is used for analyzing the quality and the rigidity in the structural power three factors, and the device II is used for analyzing the damping in the structural power three factors.
The bottom plate 1 is provided with a second bolt hole 13, the trapezoid body 2 above is provided with a groove 11, the size of the groove 11 is consistent with that of the steel bar 3, the steel bar 3 can be just inserted into the groove 11, the bolt is screwed through a first bolt hole 10 behind the trapezoid body 2 to fix the steel bar 3, the top of the steel bar 3 is provided with a support 12, and the support 12 is used for fixing square 4 blocks of different materials.
The U-shaped thick steel plate 6 and the thin steel plate 5 are connected and fixed into a rectangular body through four groups of bolts 9, the U-shaped thick steel plate 6 is provided with three bolt holes 14, an overhanging damper bracket 8 is welded in the middle of the three bolt holes 14, and an injector 7 is bonded in the upper overhanging damper bracket 8 and the lower overhanging damper bracket 8. The syringe 7 bonded between the two overhanging damper brackets 8 is used as a damper.
The steel bars 3 are divided into long, medium and short three sizes, wherein one long steel bar and one short steel bar are respectively arranged, and four medium steel bars are arranged, and six medium steel bars are arranged.
The square 4 square is made of three materials of aluminum, copper and tungsten, wherein one square of aluminum and one square of tungsten are respectively, and the number of copper square is three, and the number of copper square is six, and the steel bar 3 and the trapezoid body 2 can be detached at any time.
The second bolt hole 13 on the first bottom plate 1 of the device is identical to the third bolt hole 14 of the second U-shaped thick steel plate 6 of the device in size, and the distance between the second bolt holes of the device is twice that between the first bolt holes. Two devices can be conveniently and simultaneously arranged on a vibrating table with bolt holes.
The first device and the second device can be used for manually carrying out brief experimental display, can also be connected with a professional vibrating table through the bolt hole at the bottom to carry out professional experimental display, can be used for analyzing the quality and the rigidity of the structural power three factors, can be used for analyzing the damping of the structural power three factors, and can be used together to enable teachers to fully carry out structural power characteristic teaching explanation.
The utility model has the beneficial effects that:
1. good portability
The utility model has simple structure, less parts, small volume, light weight, convenient carrying, simple installation and operation, and the device can be split into different components. The teacher can independently bring the teaching tool into the class to carry out the teaching along with the theoretical teaching, and the teaching effect is better.
2. Low cost
The device has simple structure, less parts, small volume, light weight and lower processing cost; in addition, if the components are damaged, only the damaged components are needed to be replaced, so that the maintenance cost is saved. The parts of the device are relatively common, and the syringe in the second device is taken as an example, so that compared with a professional damper, the syringe can not only meet the experimental effect of the device.
3. Has strong speciality
The device not only can be used for displaying in a classroom, but also can be fixed on a professional vibrating table by bolts on a bottom plate for experimental display.
4. High practical level
In the test process, the teacher can arrange to conduct various creative teaching, such as enabling students to guess the material properties in comparison experiments or telling students the material properties to enable the students to guess the experimental conditions and the like, and the teacher can freely exert the advantages of the device according to own ideas for teaching.
Drawings
Fig. 1 is a device one of the present utility model.
Fig. 2 is a second device of the present utility model.
Fig. 3 is a schematic view of a main part of the device of the present utility model.
Fig. 4 is a schematic diagram of two main parts of the device of the present utility model.
Reference numerals are defined as follows:
a base plate 1; a trapezoid body 2; a steel bar 3; square blocks 4; a thin steel plate 5; u-shaped thick steel plates 6; a syringe 7; an overhanging damper bracket 8; a bolt 9; bolt holes I10 on the back of the trapezoid body; a trapezoidal body groove 11; a support 12 on top of the bars; a second bolt hole 13 on the first bottom plate of the device; bolt hole III 14 of U-shaped steel sheet.
Detailed Description
The present utility model will be described in further detail with reference to examples.
Referring to fig. 1 to 4, the present utility model is a structural dynamic characteristic teaching device, comprising:
the bottom plate 1 is provided with two bolt holes 13, the trapezoid body 2 above is provided with a groove 11, the size of the groove is consistent with that of the steel bar 3, the steel bar can be just inserted into the groove, and the steel bar is fixed by screwing the bolt through the first bolt hole 10 on the back of the trapezoid body. The top of the steel bar is provided with a support 12 for fixing the square blocks 4 of different materials.
The U-shaped thick steel plate 6 and the thin steel plate 5 are connected and fixed into a rectangular body through four groups of bolts 9, the U-shaped thick steel plate is provided with three bolt holes 14, an overhanging damper bracket 8 is welded in the middle of the bolt holes, and an injector 7 is bonded in the upper overhanging damper bracket and the lower overhanging damper bracket.
The steel bars 3 are divided into long, medium and short three sizes, wherein one long steel bar and one short steel bar are respectively arranged, and four medium steel bars are arranged.
The square block 4 is made of three materials of aluminum, copper and tungsten. Wherein one of the aluminum square and the tungsten square, and four of the copper square.
The steel bars 3 and the trapezoid bodies 2 can be detached and rearranged at any time.
The syringe 9 bonded between the two overhanging damper brackets 8 is used as a damper.
The second bolt hole 13 on the bottom plate 1 is consistent with the second bolt hole 14 of the U-shaped thick steel plate 6, and the second bolt hole spacing is twice the first bolt hole spacing.
The first and second devices can be used for carrying out brief experimental display manually, and can also be connected with a professional vibrating table through bolt holes at the bottom for carrying out professional experimental display.
The specific installation method of the utility model comprises the following steps:
the first installation method of the device comprises the following steps: the two bottom plates 1 are horizontally placed, and the trapezoid body 2 on one bottom plate 1 is inserted into the steel bars 3 according to the sequence of length, middle and short, and meanwhile, copper cube blocks 4 are bonded on the steel bars 3 through supports. Three steel bars 3 with medium length are inserted into the trapezoid body 2 on the other base plate 1, and square blocks of three materials of aluminum, copper and tungsten are respectively bonded on the three steel bars 3. After the steel bar 3 is inserted into the trapezoid body 2, the bolt is screwed through the bolt hole on the back of the trapezoid body 2 to fix the steel bar 3.
The second installation method of the device comprises the following steps: two U-shaped thick steel plates 6 and thin steel plates 5 are connected into a rectangular body through a group of four bolts, two groups of rectangular bodies are installed, and the middle of an overhanging damper bracket 8 of one rectangular body and the middle of the other rectangular body are fixed by bonding the injector 7 through glue.
The application method of the utility model comprises the following steps:
after the device is installed, the two groups of devices are respectively vibrated at different frequencies, vibration conditions of the steel bars 3 are observed, the influence of rigidity and mass on structural dynamic characteristics is analyzed, the vibration conditions of the steel bars are observed, when vibration frequencies are lower, the steel bars with higher rigidity, namely short steel bars and the steel bars with lighter mass, namely steel bars for bonding an aluminum cube, vibrate violently, and when vibration frequencies are higher, the steel bars with lower rigidity, namely long steel bars and the steel bars with heavier mass, namely steel bars for bonding a tungsten cube, vibrate violently. When the device starts to shake, the effect displayed by the device is directly observed, and the device is convenient for students to observe and understand.
After the second device is installed, the U-shaped thick steel plate 6 at the bottom of the second device is briefly fixed by feet, meanwhile, the U-shaped thick steel plate 6 above the second device is pushed, shaking conditions of the second device are observed, the second device with the injector is more stable under the condition that pushing force is the same, the effect displayed by the second device is visual, and the second device is convenient for students to observe and understand.
The injector 7 can be used for replacing a professional damper in the device, the effect is visual, and the thinking ability of students can be improved by using loose ordinary articles in life in a teaching device.
The overhanging damper bracket 8 is used to fix the position of the syringe against falling out during use.
Claims (7)
1. The teaching device for the structural dynamic characteristics is characterized by comprising a first device and a second device, wherein the first device comprises a bottom plate (1) with a bolt hole at the bottom, a trapezoid body (2) is arranged on the surface of the bottom plate (1), steel bars (3) with different lengths are arranged on the trapezoid body (2), and a cube (4) is arranged at the top of the steel bar (3);
the device II comprises a U-shaped thick steel plate (6) at the bottom and the top, the U-shaped thick steel plate (6) is connected through thin steel plates (5) at the two sides to form a square frame structure, an overhanging damper bracket (8) is arranged on the U-shaped thick steel plate (6), the overhanging damper bracket (8) at the upper part and the overhanging damper bracket (8) at the lower part are in axisymmetric structures, and an injector (7) is arranged between the overhanging damper brackets (8).
2. The teaching device for structural dynamics according to claim 1, wherein the first device is used for analyzing the mass and rigidity in the structural dynamics, and the second device is used for analyzing the damping in the structural dynamics.
3. The teaching device for structural dynamic characteristics according to claim 1, wherein the base plate (1) is provided with two bolt holes (13), the trapezoid body (2) above is provided with a groove (11), the size of the groove (11) is consistent with that of the steel bar (3), the steel bar (3) can be just inserted into the groove (11), the bolt is screwed through the first bolt hole (10) on the back of the trapezoid body (2) to fix the steel bar (3), the top of the steel bar (3) is provided with a support (12), and the support (12) is used for fixing square blocks of cubes (4) made of different materials.
4. The teaching device for structural dynamic characteristics according to claim 1, wherein the U-shaped thick steel plate (6) and the thin steel plate (5) are connected and fixed into a rectangular body through four groups of bolts (9), three bolt holes (14) are formed in the U-shaped thick steel plate (6), an overhanging damper bracket (8) is welded in the middle of the three bolt holes (14), one injector (7) is bonded in the upper overhanging damper bracket (8) and the lower overhanging damper bracket (8), and the injector (7) bonded between the two overhanging damper brackets (8) is used as a damper.
5. A constructional dynamic characteristic teaching device according to claim 1, characterized in that the bars (3) are divided into three dimensions, long, medium and short, wherein the long and short bars are each one, and the medium bars are each four, and six in total.
6. The teaching device for structural dynamic characteristics according to claim 1, wherein the square (4) is made of three materials of aluminum, copper and tungsten, wherein one square of aluminum and tungsten is provided, the other square of copper is provided, and the number of square of copper is six, and the steel bar (3) and the trapezoid (2) can be detached at any time.
7. The teaching device for structural power characteristics according to claim 1, wherein the second bolt hole (13) on the first base plate (1) of the device is identical to the third bolt hole (14) of the second U-shaped thick steel plate (6) of the device in size, and the distance between the second bolt holes of the device is twice the distance between the first bolt holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321161295.1U CN219936569U (en) | 2023-05-15 | 2023-05-15 | Structural dynamic characteristic teaching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321161295.1U CN219936569U (en) | 2023-05-15 | 2023-05-15 | Structural dynamic characteristic teaching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219936569U true CN219936569U (en) | 2023-10-31 |
Family
ID=88485452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321161295.1U Active CN219936569U (en) | 2023-05-15 | 2023-05-15 | Structural dynamic characteristic teaching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219936569U (en) |
-
2023
- 2023-05-15 CN CN202321161295.1U patent/CN219936569U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |