CN211878878U - Transmission ratio analysis demonstration device of bevel gear planetary gear train - Google Patents
Transmission ratio analysis demonstration device of bevel gear planetary gear train Download PDFInfo
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- CN211878878U CN211878878U CN202020829650.8U CN202020829650U CN211878878U CN 211878878 U CN211878878 U CN 211878878U CN 202020829650 U CN202020829650 U CN 202020829650U CN 211878878 U CN211878878 U CN 211878878U
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- shaft
- bevel
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Abstract
A transmission ratio analysis demonstration device of a conical gear planetary gear train comprises a support, a conical gear corner indicating device, a shell and a shell corner indicating device, wherein the conical gear corner indicating device can indicate the angle rotated by the conical gear relative to the support, and the shell corner indicating device can indicate the angle rotated by the shell relative to the support. The bevel gears include a first bevel gear connected to the housing through a first gear shaft, a second bevel gear connected to the housing through a second gear shaft, a third bevel gear connected to the housing through a third gear shaft, and a fourth bevel gear connected to the housing through a fourth gear shaft, and the first, second, third, and fourth bevel gears are engaged with each other two by two.
Description
Technical Field
The invention relates to a teaching demonstration device, in particular to a transmission ratio analysis demonstration device of a bevel gear planetary gear train.
Background
The planetary gear train with bevel gears is one of the gear trains frequently used in mechanical transmission, and although the planetary gear train has few elements and a complex structure, the power transmission and the calculation of the transmission ratio are complex. The current teaching means mainly depend on theoretical formula deduction during blackboard teaching and animation demonstration during multimedia teaching, but when the theoretical formula deduction is carried out, the required knowledge is deep, and high-grade mathematics knowledge is required to be understood and mastered, so that the teaching means can not be understood and mastered basically for college students or middle-high-position students with general cultural achievements. When the multimedia animation is demonstrated, the motion states of the components can only be known, and if the motion rule is deeply mastered, the demonstration by animation is difficult to realize.
Although some schools are provided with training courses, the training courses mainly use the disassembly and assembly of parts, little and little explanation is provided for the principle, and even if the principle is explained, an effective means is lacked to clearly explain the transmission ratio.
Disclosure of Invention
In order to solve the technical problems, the invention provides a transmission ratio analysis demonstration device of a bevel gear planetary gear train, which can help teachers to understand the transmission ratio of the bevel gear planetary gear train more clearly and help students to understand the transmission ratio of the bevel gear planetary gear train more intuitively.
A transmission ratio analysis demonstration device of a conical gear planetary gear train comprises a support, a conical gear corner indicating device, a shell and a shell corner indicating device, wherein the conical gear corner indicating device can indicate the angle rotated by the conical gear relative to the support, and the shell corner indicating device can indicate the angle rotated by the shell relative to the support.
The bevel gears include a first bevel gear connected to the housing through a first gear shaft, a second bevel gear connected to the housing through a second gear shaft, a third bevel gear connected to the housing through a third gear shaft, and a fourth bevel gear connected to the housing through a fourth gear shaft, and the first, second, third, and fourth bevel gears are engaged with each other two by two.
The first gear shaft and the fourth gear shaft are arranged on the outer side of the shell and are connected with bearings, the support is fixedly connected with a bearing seat, the bearings are supported in the bearing seat, and the bearing seat is semicircular.
Preferably, a locking device is arranged between the first conical gear and the fourth conical gear which are opposite, and the locking device can lock the first conical gear and the fourth conical gear, so that the first conical gear and the fourth conical gear form a whole.
Preferably, the locking device includes with the locking hole of first conical gear rigid coupling, with the locking axle of fourth conical gear rigid coupling and the locking bolt that can axial displacement on the locking hole, just the locking axle with the locking hole is clearance fit, the locking bolt can with when axial displacement the locking axle with the locking hole locks.
Preferably, the housing rotation angle indicating device comprises a housing dial fixedly connected to the housing and a housing pointer fixedly connected to the bearing seat.
Preferably, the bevel gear rotation angle indicating device includes a gear dial fixedly connected to the bearing block and a gear pointer fixedly connected to the first gear shaft and the fourth gear shaft.
The invention has the beneficial effects that: simple structure and clear demonstration.
Drawings
Fig. 1 is a schematic view of the general structure of the present invention.
Fig. 2 is a partially enlarged schematic view of the present invention.
In the figure: 1-first conical gear, 2-second conical gear, 3-third conical gear, 4-fourth conical gear, 5-shell dial, 6-gear dial, 7-bearing, 8-gear pointer, 9-bearing seat, 10-shell pointer, 11-bracket, 12-shell, 13-locking shaft, 14-second gear shaft, 15-locking bolt, 16-locking hole and 17-fourth gear shaft.
Detailed Description
In order to more clearly illustrate the present invention, embodiments of the present invention are further described below with reference to the accompanying drawings.
The structure of the present invention will be described.
As shown in fig. 1 and 2, the present invention includes a first bevel gear, a second bevel gear, a third bevel gear, and a fourth bevel gear, which are connected to a housing through a first gear shaft, a second gear shaft, a third gear shaft, and a fourth gear shaft, respectively, and the first bevel gear, the second bevel gear, the third bevel gear, and the fourth bevel gear are rotatable on the housing around the first gear shaft, the second gear shaft, the third gear shaft, and the fourth gear shaft. The first conical gear is meshed with the second conical gear and the third conical gear respectively, and the fourth conical gear is meshed with the second conical gear and the third conical gear respectively. The first conical gear is fixedly connected with a locking hole, the fourth conical gear is fixedly connected with a locking shaft, one section of the locking shaft is inserted into the locking hole, the locking hole is further in threaded connection with a locking bolt, and the locking bolt can fix the locking shaft and the locking hole when being screwed into the locking hole, so that the first conical gear and the fourth conical gear are fixed.
The parts of the first gear shaft and the fourth gear shaft extending out of the shell are also connected with bearings, and the bearings are arranged in bearing seats fixed on the support. In order to facilitate installation and removal, the bearing seat is semicircular.
A shell dial is fixedly connected to the periphery of the shell, the first gear shaft and the fourth gear shaft, and the diameter of the shell dial is equal to that of the bearing seat; a shell pointer is fixedly connected to the bearing seat and points to the shell dial.
The outer side of the bearing seat is also provided with a gear dial, the lengths of the first gear shaft and the fourth gear shaft are preferably equal to the lengths of the first gear shaft and the fourth gear shaft, and gear pointers are arranged on the outer end faces of the first gear shaft and the fourth gear shaft and point to the gear dial.
The manner of use of the present invention is described below.
The demonstration bevel gear planetary gear train has two general modes of demonstrating the working state when the second bevel gear and the third bevel gear only revolve and do not rotate, and demonstrating the working state when the second bevel gear and the third bevel gear rotate and revolve.
When demonstrating that only revolution is carried out and rotation is not carried out, the first conical gear and the fourth conical gear need to be locked by a locking bolt. When the shell is rotated, the second gear shaft and the third gear shaft drive the second bevel gear and the third bevel gear to revolve around the axis of the first gear shaft. Meanwhile, the first conical gear and the fourth conical gear can rotate under the driving of the second conical gear and the third conical gear. At this time, the angle rotated by the housing can be read out through the housing pointer and the housing dial, the angle rotated by the first conical gear and the fourth conical gear can be read out through the gear pointer and the gear dial, and further the transmission ratio between the housing and the first conical gear and the transmission ratio between the housing and the fourth conical gear can be calculated, and the transmission ratio between the first conical gear and the fourth conical gear can also be calculated.
When demonstrating that the revolution and the rotation exist, the locking bolt needs to be loosened firstly, so that the first conical gear and the fourth conical gear can rotate relatively freely. When the shell is rotated, an external force is applied to the first conical gear or the fourth conical gear to block the first conical gear or the fourth conical gear from freely rotating. The shell body drives the second bevel gear and the third bevel gear to revolve around the axis of the first gear shaft through the second gear shaft and the third gear shaft. Meanwhile, the first conical gear and the fourth conical gear can rotate under the driving of the second conical gear and the third conical gear. Because the resistance force of the first conical gear or the fourth conical gear is different, the stress of the second conical gear and the stress of the third conical gear on the two sides meshed with the first conical gear and the fourth conical gear are also different, the second conical gear and the third conical gear can also rotate inevitably while revolving, and the rotation speeds of the first conical gear and the fourth conical gear are also different. At this time, the angle rotated by the housing can be read out through the housing pointer and the housing dial, the angle rotated by the first conical gear and the fourth conical gear can be read out through the gear pointer and the gear dial, and further the transmission ratio between the housing and the first conical gear and the transmission ratio between the housing and the fourth conical gear can be calculated, and the transmission ratio between the first conical gear and the fourth conical gear can also be calculated.
In the above embodiments, the locking mechanism for locking the first conical gear and the fourth conical gear may adopt other modes, and the housing rotation angle indicating device and the gear rotation angle indicating device may also adopt other modes.
Claims (7)
1. A transmission ratio analysis demonstration device of a conical gear planetary gear train is characterized in that: the angle indicating device comprises a bracket, a conical gear angle indicating device, a shell and a shell angle indicating device, wherein the conical gear angle indicating device can indicate the angle rotated by the conical gear relative to the bracket, and the shell angle indicating device can indicate the angle rotated by the shell relative to the bracket.
2. The transmission ratio analysis demonstration device for the bevel gear planetary gear train according to claim 1, characterized in that: the bevel gears include a first bevel gear connected to the housing through a first gear shaft, a second bevel gear connected to the housing through a second gear shaft, a third bevel gear connected to the housing through a third gear shaft, and a fourth bevel gear connected to the housing through a fourth gear shaft, and the first, second, third, and fourth bevel gears are engaged with each other two by two.
3. The transmission ratio analysis demonstration device for the bevel gear planetary gear train according to claim 2, characterized in that: the first gear shaft and the fourth gear shaft are arranged on the outer side of the shell and are connected with bearings, the support is fixedly connected with a bearing seat, the bearings are supported in the bearing seat, and the bearing seat is semicircular.
4. The transmission ratio analysis demonstration device for the bevel gear planetary gear train according to claim 2, characterized in that: and a locking device is arranged between the first conical gear and the fourth conical gear which are opposite, and the locking device can lock the first conical gear and the fourth conical gear to enable the first conical gear and the fourth conical gear to form a whole.
5. The transmission ratio analysis demonstration device for the bevel gear planetary gear train according to claim 4, characterized in that: the locking device comprises a locking hole fixedly connected with the first conical gear, a locking shaft fixedly connected with the fourth conical gear and a locking bolt capable of axially moving on the locking hole, the locking shaft is in clearance fit with the locking hole, and the locking bolt can lock the locking shaft and the locking hole when axially moving.
6. A transmission ratio analysis demonstration apparatus for a planetary gear train of bevel gears as claimed in claim 3 wherein: the shell corner indicating device comprises a shell dial fixedly connected to the shell and a shell pointer fixedly connected to the bearing seat.
7. A transmission ratio analysis demonstration apparatus for a planetary gear train of bevel gears as claimed in claim 3 wherein: the bevel gear corner indicating device comprises a gear dial fixedly connected to the bearing seat and a gear pointer fixedly connected to the first gear shaft and the fourth gear shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020829650.8U CN211878878U (en) | 2020-05-18 | 2020-05-18 | Transmission ratio analysis demonstration device of bevel gear planetary gear train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020829650.8U CN211878878U (en) | 2020-05-18 | 2020-05-18 | Transmission ratio analysis demonstration device of bevel gear planetary gear train |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211878878U true CN211878878U (en) | 2020-11-06 |
Family
ID=73234315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020829650.8U Expired - Fee Related CN211878878U (en) | 2020-05-18 | 2020-05-18 | Transmission ratio analysis demonstration device of bevel gear planetary gear train |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211878878U (en) |
-
2020
- 2020-05-18 CN CN202020829650.8U patent/CN211878878U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201106 |