CN216715133U - Two-stage planet automatic variable reduction ratio speed reducer - Google Patents
Two-stage planet automatic variable reduction ratio speed reducer Download PDFInfo
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- CN216715133U CN216715133U CN202123181911.3U CN202123181911U CN216715133U CN 216715133 U CN216715133 U CN 216715133U CN 202123181911 U CN202123181911 U CN 202123181911U CN 216715133 U CN216715133 U CN 216715133U
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Abstract
The utility model provides a two-stage planetary automatic variable-reduction-ratio speed reducer which comprises a shell and a speed reducing assembly arranged in the shell; the speed reduction assembly comprises an input shaft, an output shaft, a primary planet carrier, a primary planet gear, a primary sun gear, a secondary planet gear, a secondary sun gear, a secondary planet carrier, a primary gear ring and a secondary gear ring; the primary gear ring and the secondary gear ring are rotatably arranged in the shell and are mutually connected, one end of the input shaft is connected with the primary sun gear, and the primary planet gear is arranged on the primary planet carrier and is meshed with the primary sun gear and the primary gear ring; the secondary sun gear is fixedly arranged in the shell, and the secondary planet gear is arranged on the secondary planet carrier and then meshed with the secondary sun gear and the secondary gear ring; the output shaft is sleeved on the input shaft, and one end of the output shaft is fixedly connected with the first-stage planet carrier. The utility model has the advantage of automatic adjustment according to the load in practical use.
Description
Technical Field
The utility model relates to the technical field of speed reducers, in particular to a two-stage planetary automatic speed reduction ratio-variable speed reducer.
Background
The reduction gear serves to match the rotational speed and the torque transmission between the prime mover and the working machine or the actuator, and is used in modern machines in a very wide range of applications. The speed reducer can be divided into two categories of a general speed reducer and a special speed reducer according to purposes, and the design, the manufacture and the use characteristics of the general speed reducer and the special speed reducer are different.
Among them, the principle of the planetary reduction gear is a power transmission mechanism that uses a speed converter of a gear to reduce the number of revolutions of a motor to a desired number of revolutions and obtain a large torque. The gear with less teeth on the transmission shaft of the planetary reducer is meshed with the big gear on the output shaft to achieve the purpose of speed reduction. The common speed reducer also has several pairs of gears meshed with the same principle to achieve ideal speed reducing effect, and the ratio of the number of teeth of the big gear and the small gear is the transmission ratio.
The speed ratio of the reduction gear among the prior art is all fixed, needs manually in order to change the speed ratio, or automatic change gear train reaches the requirement that changes the speed ratio, like the gearbox of gas car, motorcycle gearbox etc. load send the change and need manual operation make mistakes easily, and automatic structure is complicated, and is with high costs, needs a novel planetary reducer urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a two-stage planetary automatic variable reduction ratio speed reducer which has the advantage of automatic adjustment according to load in actual use.
In order to solve the technical problems, the basic concept of the utility model is as follows:
(1) the whole speed reducer is a two-stage planetary speed reducer, and a first-stage planet carrier of the first-stage planetary speed reducer and a second-stage planet carrier of the second-stage planetary speed reducer are integrated into a whole and have the same rotating speed;
(2) the primary gear ring of the first-stage planetary reducer and the secondary gear ring of the second-stage planetary reducer are integrated into a whole and have the same rotating speed;
(3) a primary sun gear of the first-stage planetary reducer is a driving wheel, and a secondary sun gear of the second-stage planetary reducer is fixed;
(4) a first-stage planet carrier of the first-stage planetary reducer is integrated with an output shaft;
(5) when the first-stage sun gear rotates, the first-stage gear ring does not move, the first-stage planet carrier rotates, and the steering direction is the same as the input shaft;
(5) because the primary planet carrier, the secondary planet carrier and the output shaft are integrated, the secondary planet carrier and the output shaft run at the same speed and in the same direction as the primary planet carrier;
(6) because the secondary sun gear is fixed, the secondary planet carrier drives the secondary gear ring to rotate, and the steering direction of the secondary planet carrier is the same as that of the secondary planet carrier;
(7) the primary gear ring of the first-stage planetary reducer and the secondary gear ring of the second-stage planetary reducer are integrated, and the secondary gear ring drives the primary gear ring to run at the same speed and in the same direction;
(8) one-level ring gear and one-level sun gear rotation direction are the same, make one-level planet carrier rotate faster, and one-level planet carrier makes the second grade planet carrier faster, and the second grade planet carrier makes the second grade ring gear faster, and the second grade ring gear makes the one-level ring gear faster, and faster one-level ring gear makes the one-level planet carrier more, goes into the function that positive feedback reaches the gear ratio.
The specific scheme adopted by the utility model is as follows:
a two-stage planet automatic variable-reduction-ratio speed reducer comprises a shell and a speed reduction assembly arranged in the shell;
the speed reduction assembly comprises an input shaft, an output shaft, a primary planet carrier, a primary planet gear, a primary sun gear, a secondary planet gear, a secondary sun gear, a secondary planet carrier, a primary gear ring and a secondary gear ring;
the primary gear ring and the secondary gear ring are rotatably arranged in the shell and are mutually connected, one end of the input shaft is connected with the primary sun gear, and the primary planet gear is arranged on the primary planet carrier and is meshed with the primary sun gear and the primary gear ring; the secondary sun gear is fixedly arranged in the shell, and the secondary planet gear is arranged on the secondary planet carrier and then meshed with the secondary sun gear and the secondary gear ring;
the output shaft is sleeved on the input shaft, one end of the output shaft is fixedly connected with the first-stage planet carrier, and the first-stage planet carrier is fixedly connected with the second-stage planet carrier.
In some preferred embodiments, the primary planet carrier and the secondary planet carrier are of an integral structure.
Further optimizing, the primary gear ring and the secondary gear ring are of an integrated structure.
The shell comprises an end cover and a shell, the primary gear ring and the secondary gear ring are rotatably arranged in the shell, the end cover is connected with the shell through bolts, and the output shaft is in running fit with the end cover.
Further preferably, the secondary sun gear includes a sun gear body and a connecting shaft, the connecting shaft is fixedly mounted on the housing, and the sun gear body is fixedly connected with the connecting shaft and meshed with the secondary planetary gear.
The second-stage planet carrier is connected with a connecting end, the connecting end is provided with a through hole, and the connecting end is in running fit with the connecting shaft through the through hole.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model mainly comprises a shell and a speed reducing component, wherein the speed reducing component comprises an input shaft, an output shaft, a primary planet carrier, a primary planet gear, a primary sun gear, a secondary planet gear, a secondary sun gear, a secondary planet carrier, a primary gear ring and a secondary gear ring; in actual use, after power is input from the input shaft, the purpose of speed reduction is achieved through the action of the primary planetary gear, the primary sun gear, the secondary planetary gear, the secondary sun gear, the primary gear ring and the secondary gear ring; the rotation directions of the primary gear ring and the primary sun gear are the same, so that the primary planet carrier rotates faster, the primary planet carrier enables the secondary planet carrier to rotate faster, the secondary planet carrier enables the secondary gear ring to be faster, the primary gear ring is enabled to be faster by the secondary gear ring, the faster primary gear ring enables the primary planet carrier to be more massive, and the function of positive feedback to reach the gear ratio is achieved; when the power input of the input shaft is unchanged, when the load of the output shaft is changed, the purpose of automatic adjustment can be realized through the matching of the first-stage sun gear, the second-stage sun gear, the first-stage planetary gear, the second-stage planetary gear and the first-stage gear ring and the second-stage gear ring.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a sectional view of the overall structure of the present invention.
Reference numerals are as follows:
the speed reducer comprises a shell 1, a speed reducing component 2, an input shaft 3, an output shaft 4, a primary planet carrier 5, a primary planet gear 6, a primary sun gear 7, a secondary planet gear 8, a secondary sun gear 9, a secondary planet carrier 10, a primary ring gear 11, a secondary ring gear 12, an end cover 13, a shell 14, a sun gear body 15, a connecting shaft 16, a bearing 17, a connecting end 18, a through hole 19 and a support 20.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the embodiments of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only used for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
In embodiments of the utility model, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or the first and second features being in contact, not directly, but via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. The first feature being "under," "beneath," and "under" the second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the utility model. To simplify the disclosure of embodiments of the utility model, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit embodiments of the present invention. Furthermore, embodiments of the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Example one
Referring to fig. 1-2, the present embodiment discloses a two-stage planetary automatic variable reduction ratio reducer, which comprises a housing 1 and a reduction assembly 2 arranged in the housing 1;
the speed reduction assembly 2 comprises an input shaft 3, an output shaft 4, a primary planet carrier 5, a primary planet gear 6, a primary sun gear 7, a secondary planet gear 8, a secondary sun gear 9, a secondary planet carrier 10, a primary gear ring 11 and a secondary gear ring 12;
the primary gear ring 11 and the secondary gear ring 12 are rotatably arranged in the shell 1 and are mutually connected, one end of the input shaft 3 is connected with the primary sun gear 7, and the primary planet gear 6 is arranged on the primary planet carrier 5 and is meshed with the primary sun gear 7 and the primary gear ring 11; the secondary sun gear 9 is fixedly arranged in the shell 1, and the secondary planet gear 8 is arranged on the secondary planet carrier 10 and then meshed with the secondary sun gear 9 and the secondary gear ring 12;
the output shaft 4 is sleeved on the input shaft 3, one end of the output shaft 4 is fixedly connected with the first-stage planet carrier 5, and the first-stage planet carrier 5 is fixedly connected with the second-stage planet carrier 10.
The utility model mainly comprises a shell 1 and a speed reducing component 2, wherein the speed reducing component 2 comprises an input shaft 3, an output shaft 4, a primary planet carrier 5, a primary planet gear 6, a primary sun gear 7, a secondary planet gear 8, a secondary sun gear 9, a secondary planet carrier 10, a primary gear ring 11 and a secondary gear ring 12; in actual use, after power is input from the input shaft 3, the purpose of speed reduction is achieved through the action of the primary planetary gear 6, the primary sun gear 7, the secondary planetary gear 8, the secondary sun gear 9, the primary gear ring 11 and the secondary gear ring 12; because the rotation directions of the primary gear ring 11 and the primary sun gear are the same, the primary planet carrier 5 rotates faster, the primary planet carrier 5 enables the secondary planet carrier 10 to rotate faster, the secondary planet carrier 10 enables the secondary gear ring 12 to rotate faster, the secondary gear ring 12 enables the primary gear ring 11 to rotate faster, and the faster primary gear ring 11 enables the primary planet carrier 5 to be more massive, so that the function of positive feedback to reach the gear ratio is formed; when the power input of the input shaft 3 is unchanged, when the load of the output shaft 4 is changed, the purpose of automatically adjusting the gear ratio can be realized through the matching of the first-stage sun gear, the second-stage sun gear, the first-stage planetary gear, the second-stage planetary gear and the first-stage gear ring and the second-stage gear ring.
Further optimization, the primary planet carrier 5 and the secondary planet carrier 10 are of an integrated structure; in practical implementation, the primary planet carrier 5 and the secondary planet carrier 10 may be connected by bolts to form an integrated structure.
In the present embodiment, the primary ring gear and the secondary ring gear 12 are of an integral structure.
The shell 1 comprises an end cover 13 and a shell 14, the primary gear ring 11 and the secondary gear ring 12 are rotatably arranged in the shell 14, the end cover 13 is connected with the shell 14 through bolts, and the output shaft 4 is in rotating fit with the end cover 13.
The secondary sun gear 9 comprises a sun gear body 15 and a connecting shaft 16, the connecting shaft 16 is fixedly mounted on the shell 1, and the sun gear body 15 is fixedly connected with the connecting shaft 16 and meshed with the secondary planet gear 8.
In actual use, the output shaft 4 is rotatably connected to the housing 1 via a bearing 17.
Example two
The present embodiment is further optimized based on the first embodiment, in this embodiment, the second-stage planet carrier 10 is connected with the connecting end 18, the connecting end 18 has a through hole 19, and the connecting end 18 is rotatably matched with the connecting shaft 16 through the through hole 19.
The primary planet carrier and the secondary planet carrier can be more stable in rotation through the arranged connecting end head 18, so that the output shaft 4 rotates more stably.
In specific implementation, the left end of the primary gear ring 11 is rotatably connected with the output shaft 4 through a support 20 through a bearing 17, and the right end of the secondary gear ring 12 is rotatably connected with the connecting end 18 through the bearing 17.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, it should be noted that any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. The utility model provides a two-stage planet automatic variable reduction ratio reduction gear which characterized in that: comprises a shell and a speed reducing component arranged in the shell;
the speed reduction assembly comprises an input shaft, an output shaft, a primary planet carrier, a primary planet gear, a primary sun gear, a secondary planet gear, a secondary sun gear, a secondary planet carrier, a primary gear ring and a secondary gear ring;
the primary gear ring and the secondary gear ring are rotatably arranged in the shell and are mutually connected, one end of the input shaft is connected with the primary sun gear, and the primary planet gear is arranged on the primary planet carrier and is meshed with the primary sun gear and the primary gear ring; the secondary sun gear is fixedly arranged in the shell, and the secondary planet gear is arranged on the secondary planet carrier and then meshed with the secondary sun gear and the secondary gear ring;
the output shaft is sleeved on the input shaft, one end of the output shaft is fixedly connected with the first-stage planet carrier, and the first-stage planet carrier is fixedly connected with the second-stage planet carrier.
2. The two-stage planetary automatic variable reduction ratio speed reducer according to claim 1, wherein: the first-stage planet carrier and the second-stage planet carrier are of an integrated structure.
3. The two-stage planetary automatic variable reduction ratio speed reducer according to claim 1, wherein: the primary gear ring and the secondary gear ring are of an integrated structure.
4. The two-stage planetary automatic variable reduction ratio speed reducer according to claim 1, wherein: the shell comprises an end cover and a shell, the primary gear ring and the secondary gear ring are rotatably arranged in the shell, the end cover is connected with the shell through bolts, and the output shaft is in running fit with the end cover.
5. The two-stage planetary automatic variable reduction ratio speed reducer according to any one of claims 1 to 4, wherein: the second-stage sun gear comprises a sun gear body and a connecting shaft, the connecting shaft is fixedly mounted on the shell, and the sun gear body is fixedly connected with the connecting shaft and meshed with the second-stage planetary gear.
6. The two-stage planetary automatic variable reduction ratio speed reducer according to claim 5, wherein: the second-stage planet carrier is connected with a connecting end, the connecting end is provided with a through hole, and the connecting end is in running fit with the connecting shaft through the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123181911.3U CN216715133U (en) | 2021-12-17 | 2021-12-17 | Two-stage planet automatic variable reduction ratio speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123181911.3U CN216715133U (en) | 2021-12-17 | 2021-12-17 | Two-stage planet automatic variable reduction ratio speed reducer |
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| Publication Number | Publication Date |
|---|---|
| CN216715133U true CN216715133U (en) | 2022-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123181911.3U Active CN216715133U (en) | 2021-12-17 | 2021-12-17 | Two-stage planet automatic variable reduction ratio speed reducer |
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|---|---|
| CN (1) | CN216715133U (en) |
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2021
- 2021-12-17 CN CN202123181911.3U patent/CN216715133U/en active Active
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