CN211878875U - Gear is just reversing presentation device - Google Patents
Gear is just reversing presentation device Download PDFInfo
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- CN211878875U CN211878875U CN202020401959.7U CN202020401959U CN211878875U CN 211878875 U CN211878875 U CN 211878875U CN 202020401959 U CN202020401959 U CN 202020401959U CN 211878875 U CN211878875 U CN 211878875U
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Abstract
The utility model discloses a device for demonstrating the positive and negative rotation of the gear, which comprises four gears, an external meshing incomplete gear and an internal meshing incomplete gear; the outer periphery of the external incomplete gear is partially provided with an external gear ring, the inner periphery of the internal incomplete gear is partially provided with an internal gear ring, and an included angle formed by two connecting lines from external teeth positioned at the end parts of the two ends of the external gear ring or the internal gear ring to the central point of the external incomplete gear is less than 180 degrees; the four gears are uniformly distributed along the circumferential direction of the external incomplete meshing gear, and the internal incomplete meshing gear is sleeved on the outer sides of the four gears; two adjacent gears are respectively meshed with an outer gear ring of the externally-meshed incomplete gear; the device integrates knowledge, interest and interactivity, has strong attraction, is convenient for the public to visit and study, and has good effect on popularizing the knowledge of gear engagement and improving the knowledge of the public on gear transmission.
Description
Technical Field
The utility model relates to an exhibition equipment technical field, in particular to gear is demonstration device just reversing.
Background
The devices for displaying the characteristics of the internal gear and the external gear in the existing exhibition equipment are mostly displayed separately, lack of freshness and attractiveness and are not beneficial to the understanding of a visitor on the gear engagement, so that a gear forward and backward rotation demonstration device which is convenient for visiting and learning and attractive needs to be provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can realize popularizing the knowledge of gear engagement and have knowledge, interesting and interactive in the positive and negative demonstration device of integrative gear to the public.
Therefore, the utility model discloses technical scheme as follows:
a gear positive and negative rotation demonstration device comprises a first gear, a second gear, a third gear, a fourth gear, an external meshing incomplete gear and an internal meshing incomplete gear; wherein the content of the first and second substances,
the outer gear ring is arranged on the outer part of the outer meshing incomplete gear, the rest part is an outer smooth ring, and the included angle formed by the outer teeth at the end parts of the two ends of the outer gear ring and two connecting lines on the central point of the outer meshing incomplete gear is smaller than
180 degrees; the inner part of the inner periphery of the incomplete internally meshing gear is provided with an inner gear ring, the rest part is an inner plain ring, and an included angle formed by inner teeth positioned at the end parts of the two ends of the inner gear ring and two connecting lines on the central point of the incomplete internally meshing gear is less than 180 degrees;
the first gear, the second gear, the third gear and the fourth gear are uniformly distributed along the circumferential direction of the external incomplete gear, and the internal incomplete gear is sleeved on the outer sides of the first gear, the second gear, the third gear and the fourth gear; the meshing relation among the gears satisfies: in an initial state, an inner gear ring of the incomplete internal gear is positioned at the adjacent side of an outer plain ring of the incomplete external gear, an outer gear ring of the incomplete external gear is positioned at the adjacent side of the inner plain ring of the incomplete external gear of the incomplete internal gear, and in the first gear, the second gear, the third gear and the fourth gear, two adjacent gears are respectively meshed with the inner gear ring of the incomplete internal gear, and the other two adjacent gears are respectively meshed with the outer gear ring of the incomplete external gear.
Furthermore, the gear forward and reverse rotation demonstration device also comprises a fixed frame arranged on the back side of the gear set; and one end of each rotating shaft is rotatably connected into the central through hole of the gear through a rolling bearing, and the other end of each rotating shaft is fixed on the fixing frame.
Furthermore, the rotating wheel is arranged on the outer ring of the inner meshing incomplete gear, so that the outer meshing incomplete gear and the inner meshing incomplete gear can be driven to synchronously rotate by manual driving.
Furthermore, an acrylic outer cover is fixed on the surface of the incomplete internal meshing gear, and the first gear, the second gear, the third gear, the fourth gear and the incomplete external meshing gear are all arranged in the acrylic outer cover. The incomplete external meshing gear is fixed on the acrylic outer cover through a nut so as to drive the incomplete internal meshing gear to synchronously rotate.
Compared with the prior art, the gear positive and negative rotation demonstration device integrates the intellectual property, the interestingness and the interactivity into a whole, has strong attraction, is convenient for the public to visit and study, has good effect on popularizing the gear meshing knowledge and improving the public understanding of gear transmission
Drawings
Fig. 1 is the structure schematic diagram of the gear forward and reverse rotation demonstration device of the utility model.
Detailed Description
The present invention will be further described with reference to the following drawings and specific examples, but the following examples are by no means limiting the present invention.
As shown in figure 1, the gear forward and reverse rotation demonstration device comprises a first gear 1, a second gear 2, a third gear 3, a fourth gear 4, an external incomplete gear 5 and an internal incomplete gear 6 which are arranged on a fixed frame.
Wherein, the periphery of the external incomplete gear 5 is partially provided with an external gear ring, the rest part is an external plain ring, and an included angle formed by two connecting lines from external teeth at the end parts of the two ends of the external gear ring to the central point of the external incomplete gear 5 is less than 180 degrees; an inner gear ring is arranged on the inner part of the incomplete internal meshing gear 6, the rest part is an inner plain ring, and an included angle formed by inner teeth positioned at the end parts of the two ends of the inner gear ring and two connecting lines on the central point of the incomplete internal meshing gear 6 is less than 180 degrees;
the first gear 1, the second gear 2, the third gear 3 and the fourth gear 4 are uniformly distributed along the circumferential direction of the incomplete external meshing gear 5, and the incomplete internal meshing gear 6 is sleeved on the outer sides of the first gear 1, the second gear 2, the third gear 3 and the fourth gear 4; specifically, a rotating shaft is arranged in the central through hole of each of the first gear 1, the second gear 2, the third gear 3, the fourth gear 4 and the external meshing incomplete gear 5, one end of each rotating shaft is rotatably connected in the central through hole of the gear through a rolling bearing, and the other end of each rotating shaft is fixed on a fixing frame located on the back side.
In order to show the motion characteristics of the gears, the meshing relation among the gears meets the following requirements: in an initial state, an inner gear ring of the incomplete internal gear 6 is positioned at the adjacent side of an outer plain ring of the incomplete external gear 5, an outer gear ring of the incomplete external gear 5 is positioned at the adjacent side of the inner plain ring of the incomplete external gear 5 of the incomplete internal gear 6, the first gear 1 and the second gear 2 are respectively meshed with the inner gear ring of the incomplete internal gear 6, and the third gear 3 and the fourth gear 4 are respectively meshed with the outer gear ring of the incomplete external gear 5.
In one embodiment of the present application, the incomplete internal gear 6 is fixed with an acrylic cover on the surface, and the first gear 1, the second gear 2, the third gear 3, the fourth gear 4 and the incomplete external gear 5 are all in the acrylic cover. The incomplete external meshing gear 5 is fixed on the acrylic outer cover through a nut, and a rotating wheel is arranged on the outer ring of the incomplete internal meshing gear 6, so that the incomplete internal meshing gear 6 is manually driven to synchronously rotate.
The gear forward and reverse rotation demonstration device has the working principle that: based on the meshing relationship between the gears, when the incomplete external gear 5 and the incomplete internal gear 6 rotate counterclockwise at the same time, of the four gears of the first gear 1, the second gear 2, the third gear 3 and the fourth gear 4, since two gears thereof make internal gearing with the incomplete external gear 5, the two gears also rotate counterclockwise; the other two gears form an internal gearing transmission with the internal gearing incomplete gear 6, so that the simultaneous clockwise movement of the two remaining gears can be clearly derived on the basis of this: the two gears that mesh with the incomplete ring gear 6 rotate in the same direction as the incomplete ring gear 6, and the two gears that mesh with the incomplete ring gear 5 rotate in the opposite direction to the incomplete ring gear 5.
Claims (4)
1. A gear positive and negative rotation demonstration device is characterized by comprising a first gear (1), a second gear (2), a third gear (3), a fourth gear (4), an external meshing incomplete gear (5) and an internal meshing incomplete gear (6); wherein the content of the first and second substances,
an outer gear ring is arranged at the periphery of the external incomplete meshing gear (5) partially, the rest part is an outer plain ring, and an included angle formed by two connecting lines from the external teeth at the end parts of the two ends of the outer gear ring to the central point of the external incomplete meshing gear (5) is less than 180 degrees;
an inner gear ring is arranged on the inner periphery of the incomplete internal meshing gear (6) partially, the rest part is an inner plain ring, and an included angle formed by two connecting lines from inner teeth positioned at the end parts of the two ends of the inner gear ring to the central point of the incomplete internal meshing gear (6) is less than 180 degrees;
the first gear (1), the second gear (2), the third gear (3) and the fourth gear (4) are uniformly distributed along the circumferential direction of the external incomplete meshing gear (5), and the internal incomplete meshing gear (6) is sleeved on the outer sides of the first gear (1), the second gear (2), the third gear (3) and the fourth gear (4);
the meshing relation among the gears satisfies: in an initial state, an inner gear ring of the inner incomplete gear (6) is positioned at the adjacent side of an outer plain ring of the outer incomplete gear (5), an outer gear ring of the outer incomplete gear (5) is positioned at the adjacent side of the inner plain ring of the outer incomplete gear (5) of the inner incomplete gear (6), and in the first gear (1), the second gear (2), the third gear (3) and the fourth gear (4), two adjacent gears are respectively meshed with the inner gear ring of the inner incomplete gear (6), and the other two adjacent gears are respectively meshed with the outer gear ring of the outer incomplete gear (5).
2. The gear positive and negative rotation demonstration device according to claim 1, further comprising a fixing frame arranged on the back side of the gear set; all be provided with a pivot in the central through-hole of first gear (1), second gear (2), third gear (3), fourth gear (4) and external toothing incomplete gear (5), every the one end of pivot is passed through antifriction bearing and is rotated and connect in the central through-hole of gear, the other end is fixed on the mount.
3. The gear positive and negative rotation demonstration device according to claim 2, wherein a rotating wheel is arranged on the outer ring of the inner meshing incomplete gear (6), so that the outer meshing incomplete gear (5) and the inner meshing incomplete gear (6) can be driven by human beings to synchronously rotate.
4. The gear positive and negative rotation demonstration device according to claim 2, wherein an acrylic cover is fixed on the surface of the internal incomplete gear (6), the first gear (1), the second gear (2), the third gear (3), the fourth gear (4) and the external incomplete gear (5) are all arranged in the acrylic cover, and the external incomplete gear (5) is fixed on the acrylic cover through a nut so as to drive the internal incomplete gear (6) to synchronously rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020401959.7U CN211878875U (en) | 2020-03-26 | 2020-03-26 | Gear is just reversing presentation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020401959.7U CN211878875U (en) | 2020-03-26 | 2020-03-26 | Gear is just reversing presentation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211878875U true CN211878875U (en) | 2020-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020401959.7U Active CN211878875U (en) | 2020-03-26 | 2020-03-26 | Gear is just reversing presentation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211878875U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901754A (en) * | 2021-01-14 | 2021-06-04 | 北京福田戴姆勒汽车有限公司 | Integration device of bidirectional rotary power takeoff, gearbox and power takeoff |
| CN115675985A (en) * | 2022-12-05 | 2023-02-03 | 杭州鼎成缆索科技有限公司 | Auxiliary device for steel strand coil packaging |
-
2020
- 2020-03-26 CN CN202020401959.7U patent/CN211878875U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901754A (en) * | 2021-01-14 | 2021-06-04 | 北京福田戴姆勒汽车有限公司 | Integration device of bidirectional rotary power takeoff, gearbox and power takeoff |
| CN112901754B (en) * | 2021-01-14 | 2023-11-21 | 北京福田戴姆勒汽车有限公司 | Integrated device of bidirectional rotary power takeoff, gearbox and power takeoff |
| CN115675985A (en) * | 2022-12-05 | 2023-02-03 | 杭州鼎成缆索科技有限公司 | Auxiliary device for steel strand coil packaging |
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