CN210295623U - Gear drive teaching demonstration device - Google Patents
Gear drive teaching demonstration device Download PDFInfo
- Publication number
- CN210295623U CN210295623U CN201920226760.2U CN201920226760U CN210295623U CN 210295623 U CN210295623 U CN 210295623U CN 201920226760 U CN201920226760 U CN 201920226760U CN 210295623 U CN210295623 U CN 210295623U
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- cross arm
- sliding block
- gear
- shaft
- slide block
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Abstract
A gear transmission teaching demonstration device comprises a base plate and a demonstration gear, and further comprises an upright post, a left cross arm and a right cross arm, wherein length dimension scales are arranged on the upright post, vertically and fixedly connected to the left side and the right side of the base plate, and respectively connected with a left upright post sliding block and a right upright post sliding block in a sliding manner; the left upright column sliding block and the right upright column sliding block are respectively and fixedly connected with the left cross arm and the right cross arm, and length scale marks are arranged on the surfaces of the left cross arm and the right cross arm; the left cross arm and the right cross arm are respectively connected with the left cross arm sliding block and the right cross arm sliding block in a sliding manner; the left cross arm sliding block and the right cross arm sliding block are respectively and fixedly connected with the left side shaft and the right side shaft; the end parts of the left shaft and the right shaft are rotatably connected with the demonstration gear. The device not only can demonstrate the transmission process of the gear directly, but also can conveniently conclude or verify quantitative mathematical relation among parameters such as gear modulus, tooth number, center distance, deflection coefficient and the like, so that students can understand and master related teaching contents more easily.
Description
Technical Field
The utility model relates to a teaching presentation device, especially a gear drive teaching presentation device belong to teaching aid technical field.
Background
Gears are one of the most widely used and important mechanical transmission parts. In the teaching activities of mechanical professions, courses related to gear transmission are also the most important teaching contents. There are many teaching aids related to gear transmission, but these teaching aids generally have the following disadvantages: the transmission process of the gear can be intuitively demonstrated, and mathematical correlation relations among basic parameters of a gear transmission system cannot be quantitatively established or reflected, for example, quantitative mathematical relations among parameters such as gear modulus, gear number, center distance, deflection coefficient and the like cannot be induced or verified. Understanding these quantitative mathematical relationships is the focus and difficulty of the relevant teaching process.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above-mentioned not enough of prior art, the utility model provides a gear drive teaching presentation device utilizes the device, and the transmission process that not only can demonstrate the gear directly perceived can also conclude or verify the quantitative mathematical relationship formula between parameters such as gear modulus, number of teeth, centre-to-centre spacing, displacement coefficient very conveniently for the student understands and masters relevant teaching content more easily. In addition, by utilizing the device, various gear transmission systems can be combined, which is beneficial to the cultivation of the practical design capability of students; the device is convenient to use, and the demonstration gears can be replaced quickly to form different gear transmission systems.
The above object of the present invention can be achieved by the following technical solutions: a gear transmission teaching demonstration device comprises a base plate and a demonstration gear, and further comprises an upright post, a left cross arm and a right cross arm, wherein length dimension scales are arranged on the upright post, vertically and fixedly connected to the left side and the right side of the base plate, and respectively connected with a left upright post sliding block and a right upright post sliding block in a sliding manner; the left upright column sliding block and the right upright column sliding block are respectively and fixedly connected with the left cross arm and the right cross arm, and length scale marks are arranged on the surfaces of the left cross arm and the right cross arm; the left cross arm and the right cross arm are respectively connected with the left cross arm sliding block and the right cross arm sliding block in a sliding manner; the left cross arm sliding block and the right cross arm sliding block are respectively and fixedly connected with the left side shaft and the right side shaft; the end parts of the left shaft and the right shaft are rotatably connected with the demonstration gear.
Preferably, the upright posts are substantially perpendicular to the left cross arm and the right cross arm.
Preferably, the length dimension of the left upright post sliding block and the right upright post sliding block is integral multiple of the dimension scale on the upright post.
Preferably, the length dimensions of the left cross arm slide block and the right cross arm slide block are integral multiples of the dimension scales on the left cross arm and the right cross arm respectively.
Preferably, the left shaft and the right shaft are respectively in threaded connection with the left cross arm sliding block and the right cross arm sliding block.
Preferably, the ends of the left and right shafts have ferromagnetism and form magnetic connection with the demonstration gear.
Preferably, the demonstration gear is provided with a mark for displaying gear parameters.
Preferably, the number of the left cross arm and the right cross arm is at least 1.
Preferably, the left upright column slide block, the right upright column slide block, the left cross arm slide block and the right cross arm slide block are provided with fastening screws.
Compared with the prior art, the utility model beneficial effect who has: the device not only can demonstrate the transmission process of gear directly perceived, can also conclude very conveniently or verify the quantitative mathematical relation formula between parameters such as gear modulus, number of teeth, centre-to-centre spacing, modification coefficient for the student understands and masters relevant teaching content more easily, and in addition, the device can also make up out multiple gear drive system, is favorable to cultivateing student's actual design ability. The device is very convenient to use, and the demonstration gear can be replaced quickly to form different gear transmission systems.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the present invention with the demonstration gear removed.
Wherein: 1-a substrate; 2-left cross arm; 21-right crossbar; 3, a column; 4-left upright column slide block; 41-right column slide block; 5-demonstration gear; 6-left cross arm slide block; 61-right cross arm slide block; 7-left shaft; 71-right axis.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 and fig. 2, the present invention provides a technical solution: a gear transmission teaching demonstration device comprises a base plate 1 and a demonstration gear 5, and further comprises a stand column 3, a left cross arm 2 and a right cross arm 21, wherein length dimension scales are arranged on the stand column 3, vertically and fixedly connected to the left side and the right side of the base plate 1, and respectively connected with a left stand column slide block 4 and a right stand column slide block 41 in a sliding manner; the left upright column sliding block 4 and the right upright column sliding block 41 are respectively and fixedly connected with the left cross arm 2 and the right cross arm 21, the surfaces of which are provided with length scale marks; the left cross arm 2 and the right cross arm 21 are respectively connected with a left cross arm slide block 6 and a right cross arm slide block 61 in a sliding manner; the left cross arm slide block 6 and the right cross arm slide block 61 are respectively and fixedly connected with the left shaft 7 and the right shaft 71; the demonstration gear 5 is rotatably connected to the end parts of the left shaft 7 and the right shaft 71.
In order to calculate the axle center position of the demonstration gear 5, the utility model discloses in, preferably, the stand 3 with left xarm 2, right xarm 21 are mutually basically perpendicular.
In order to facilitate the calculation of the axle center position of the demonstration gear 5, the utility model discloses in, preferably, the length dimension of left stand slider 4, right stand slider 41 is the integral multiple of the size scale on the stand 3.
In order to facilitate the calculation of the axle center position of the demonstration gear 5, the utility model discloses in, preferably, the length dimension of the left xarm slider 6, the right xarm slider 61 is respectively the integral multiple of the size scale on the left xarm 2, the right xarm 21.
For convenient installation, in the present invention, preferably, the left shaft 7 and the right shaft 71 are respectively connected to the left arm slider 6 and the right arm slider 61 by screw threads.
In order to increase the installation speed, in the present invention, it is preferable that the ends of the left and right shafts 7 and 71 have ferromagnetism, and form a magnetic connection with the demonstration gear 5.
In order to facilitate the operation, in the present invention, preferably, the demonstration gear 5 is provided with a mark for displaying gear parameters.
In order to obtain more gear combination forms, in the present invention, it is preferable that the number of the left and right cross arms 2 and 21 is at least 1.
In order to facilitate the operation, the utility model discloses in, preferably, be provided with fastening screw on left stand slider 4, right stand slider 41, left xarm slider 6, the right xarm slider 61.
The working principle and the operation method are as follows: selecting a proper demonstration gear 5 to be installed at the end parts of the left shaft 7 and the right shaft 71, fixing the left upright column slide block 4, the right upright column slide block 41, the left cross arm slide block 6 and the right cross arm slide block 61 at proper positions by fastening screws, enabling the reference circles of the demonstration gear 5 to be tangent, reading scale values from the scales on the upright column 3, the left cross arm 2 and the right cross arm 21, and integrating parameters of the demonstration gear 5 to establish a mathematical relational expression between related parameters.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (9)
1. A gear transmission teaching demonstration device comprises a base plate (1) and a demonstration gear (5), and is characterized by further comprising an upright post (3), a left cross arm (2) and a right cross arm (21), wherein length dimension scales are arranged on the upright post (3), vertically and fixedly connected to the left side and the right side of the base plate (1), and respectively connected with a left upright post sliding block (4) and a right upright post sliding block (41) in a sliding manner; the left upright post sliding block (4) and the right upright post sliding block (41) are respectively fixedly connected with the left cross arm (2) and the right cross arm (21) with length scale marks on the surfaces; the left cross arm (2) and the right cross arm (21) are respectively connected with the left cross arm sliding block (6) and the right cross arm sliding block (61) in a sliding manner; the left cross arm sliding block (6) and the right cross arm sliding block (61) are respectively and fixedly connected with the left shaft (7) and the right shaft (71); the end parts of the left shaft (7) and the right shaft (71) are rotationally connected with the demonstration gear (5).
2. A gear transmission teaching demonstration apparatus according to claim 1 wherein the upright (3) is substantially perpendicular to the left and right cross arms (2, 21).
3. The gear transmission teaching demonstration device according to claim 1, wherein the length dimension of the left upright slide block (4) and the right upright slide block (41) is integral multiple of the dimension scale on the upright (3).
4. A gear transmission teaching demonstration device according to claim 1 wherein the length dimensions of the left and right cross arm slides (6, 61) are integral multiples of the dimensional scales on the left and right cross arms (2, 21) respectively.
5. The gear transmission teaching demonstration device according to claim 1, wherein the left shaft (7) and the right shaft (71) are respectively in threaded connection with the left cross arm slide block (6) and the right cross arm slide block (61).
6. A gear transmission teaching demonstration apparatus according to claim 1 wherein the ends of the left (7) and right (71) shafts are ferromagnetic and magnetically connected to the demonstration gear (5).
7. A gear transmission teaching demonstration device according to claim 1 wherein the demonstration gear (5) is provided with indicia showing gear parameters.
8. A gear transmission teaching demonstration device according to claim 1 wherein the number of left and right cross arms (2, 21) is at least 1.
9. The gear transmission teaching demonstration device according to claim 1, wherein the left upright slide block (4), the right upright slide block (41), the left cross arm slide block (6) and the right cross arm slide block (61) are provided with fastening screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920226760.2U CN210295623U (en) | 2019-02-24 | 2019-02-24 | Gear drive teaching demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920226760.2U CN210295623U (en) | 2019-02-24 | 2019-02-24 | Gear drive teaching demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210295623U true CN210295623U (en) | 2020-04-10 |
Family
ID=70058979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920226760.2U Expired - Fee Related CN210295623U (en) | 2019-02-24 | 2019-02-24 | Gear drive teaching demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210295623U (en) |
-
2019
- 2019-02-24 CN CN201920226760.2U patent/CN210295623U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200410 Termination date: 20210224 |
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| CF01 | Termination of patent right due to non-payment of annual fee |