CN211778773U - Planetary speed reducer with small tooth difference - Google Patents
Planetary speed reducer with small tooth difference Download PDFInfo
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- CN211778773U CN211778773U CN201922155670.1U CN201922155670U CN211778773U CN 211778773 U CN211778773 U CN 211778773U CN 201922155670 U CN201922155670 U CN 201922155670U CN 211778773 U CN211778773 U CN 211778773U
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Abstract
The utility model discloses a poor planetary reducer of few tooth, power portion is installed to mounting flange's one end, planetary reduction mechanism is installed to the other end, planetary reduction mechanism front end is connected with alternately roller bearing, power portion drive planetary reduction mechanism motion is in order to drive alternately roller bearing output power, planetary reduction mechanism includes the sun gear of being connected with power portion, fixed connection is the ring gear on mounting flange, planet wheel and planet carrier, alternately roller bearing includes the outer lane, inner circle and roller, outer lane and ring gear fixed connection, the inboard of inner circle has the output ring gear, the planet wheel outer lane meshes with the ring gear on axial upper portion, all the other parts mesh with the output ring gear, the inboard of inner circle still is connected with the planet carrier transmission, its front end is connected with the output, the number of teeth of output ring gear is greater than the. In this way, the utility model discloses few poor planetary reducer of tooth can export great reduction ratio, has high rigidity, big moment of torsion, stable rotation moment, high bearing capacity's characteristics.
Description
Technical Field
The utility model relates to a reduction gear field especially relates to a poor planetary reducer of few tooth.
Background
The decelerator serves to reduce the rotation speed of the prime mover and simultaneously increase the torque to output the power required by the working machine. In a conventional reduction mechanism, a reduction gear is commonly used in that: the small tooth difference speed reducer is used as a special type of planetary speed reducer, skillfully realizes large transmission ratio by utilizing the tiny tooth number difference between an inner gear and an outer gear, has compact integral structure, and is increasingly used in industry.
The existing speed reducer with small tooth difference is complex in structure, can meet the requirements of the same output torque and transmission ratio, is large in size, complex in design and incapable of meeting the use requirements.
Disclosure of Invention
The utility model discloses the main technical problem who solves provides a poor planetary reducer of few tooth, can export great reduction ratio, has high rigidity, big moment of torsion, stable rotation moment, high bearing capacity's characteristics.
In order to solve the technical problem, the utility model discloses a technical scheme be: provides a planetary reducer with small tooth difference, which comprises a mounting flange, wherein one end of the mounting flange is provided with a power part, the other end of the mounting flange is provided with a planetary reducing mechanism, the front end of the planetary speed reducing mechanism is connected with a crossed roller bearing, the power part drives the planetary speed reducing mechanism to move so as to drive the crossed roller bearing to output power, the planetary reduction mechanism comprises a sun gear connected with the power part, an inner gear ring fixedly connected with the mounting flange, a planet gear and a planet carrier, the crossed roller bearing comprises an outer ring, an inner ring and a roller, the outer ring is fixedly connected with the inner gear ring, the inner side of the inner ring is provided with an output gear ring, the upper part of the outer ring of the planet gear is meshed with the inner gear ring in the axial direction, the other parts are meshed with an output gear ring, the inner side of the inner ring is in transmission connection with a planet carrier, the front end of the inner ring is connected with an output end, and the number of teeth of the output gear ring is greater than that of the inner gear ring.
In the utility model aIn a preferred embodiment, the number of teeth of the sun gear is
And the number of teeth of the inner gear ring is
The output of the output gear ring is
A reduction ratio of
。
In a preferred embodiment of the present invention, the upper left half portion of the outer ring of the planet gear is engaged with the inner gear ring, and the right half portion is engaged with the output gear ring.
In a preferred embodiment of the present invention, the output gear ring is located at the left end of the inner side of the inner ring, and the bearing is installed on the right side of the output gear ring, and the inner ring is connected to the planet carrier through the bearing.
In a preferred embodiment of the present invention, the left end of the inner gear ring is connected to the mounting flange through a fastening screw, and the right end is connected to the outer ring through a fastening screw.
In a preferred embodiment of the present invention, the planetary gear is connected to the planetary carrier through a positioning pin, and a needle roller is installed between the planetary gear and the positioning pin.
In a preferred embodiment of the present invention, the output end is an output flange, and the output flange is connected to the front end of the inner ring through a fastening screw.
In a preferred embodiment of the present invention, a clamping clip is further installed in the mounting flange, and the output shaft of the power portion passes through the clamping clip to be connected with the sun gear.
The utility model has the advantages that: the utility model discloses poor planetary reducer of few tooth can export great reduction ratio, has high rigidity, big moment of torsion, stabilizes the characteristics of rotation moment, high bearing capacity.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:
FIG. 1 is a schematic structural view of a preferred embodiment of the planetary reduction gear with less teeth difference according to the present invention;
FIG. 2 is a sectional view taken along line B-B of FIG. 1;
FIG. 3 is a sectional view taken along line A-A of FIG. 1;
FIG. 4 is a schematic perspective view of FIG. 1;
the parts in the drawings are numbered as follows: 1. the device comprises a mounting flange, 2, a power part, 21, an output shaft, 3, a planetary speed reducing mechanism, 31, a sun gear, 32, an inner gear ring, 33, a planetary gear, 34, a planet carrier, 35, a positioning pin, 36, a roller pin, 4, a cross roller bearing, 41, an outer ring, 42, an inner ring, 43, a roller, 44, an output gear ring, 45, a bearing, 5, an output end, 6 and a clamping clamp.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1 to 4, a planetary reducer with small tooth difference includes a mounting flange 1, one end of the mounting flange 1 is provided with a power portion 2, the other end is provided with a planetary reduction mechanism 3, the front end of the planetary reduction mechanism 3 is connected with a crossed roller bearing 4, the power portion 2 drives the planetary reduction mechanism 3 to move so as to drive the crossed roller bearing 4 to output power, the planetary reduction mechanism 3 includes a sun gear 31 connected with the power portion 2, an inner gear ring 32 fixedly connected to the mounting flange 1, a planetary gear 33 and a planet carrier 34, the crossed roller bearing includes an outer ring 41, an inner ring 42 and rollers 43, the outer ring 41 is fixedly connected with the inner gear ring 32, the inner side of the inner ring 42 is provided with an output gear ring 44, the outer ring of the planetary gear 33 is engaged with the inner gear ring 32 at the upper axial portion, the rest portion is engaged with the output gear ring 44, the number of teeth of the output ring gear 44 is larger than that of the ring gear 32.
The number of teeth of the sun gear 31 is
And the number of teeth of the ring gear 32 is
The output of the output ring gear 44 is
A reduction ratio of
。
In addition, the left half portion in the axial direction of the outer 31 ring of the planet gears is meshed with the inner gear ring 32, and the right half portion is meshed with the output gear ring 44. The left end of the annular gear 32 is connected to the mounting flange 1 through a fastening screw, and the right end is connected to the outer ring 41 through a fastening screw.
The output ring gear 44 is located at the left end inside the inner ring 42, a bearing 45 is mounted on the right side of the output ring gear 44, the inner ring 44 is connected to the carrier 34 via the bearing 45, the output end 5 is an output flange, and the output flange is connected to the front end of the inner ring 42 via fastening screws. The inner ring 42 of the crossed roller bearing 4 has an output gear ring 44 for outputting, and has the characteristics of high rigidity, large torque, stable rotating moment and high bearing capacity.
In addition, the planetary gear 33 is connected to the carrier 34 via a positioning pin 35, and a needle roller 36 is installed between the planetary gear 33 and the positioning pin 35. The mounting flange 1 is also internally provided with a clamping clamp 6, an output shaft 21 of the power part 2 passes through the clamping clamp 6 to be connected with a sun gear 31, and the power part 5 is a servo motor.
The whole speed reducer mechanism can be divided into two parts for description: the first part is decelerated to be fixedly installed inner gear ring 32, sun gear 31 inputs rotating speed, a certain number of planetary gears 33 are installed on planet carrier 34, planetary gears 33 are meshed with sun gear 31 and inner gear ring 32, planet carrier 34 outputs decelerated rotating speed, and if the number of teeth of sun gear 31 is equal to that of inner gear ring 32
The number of the planet wheels 33 is
And the number of teeth of the ring gear 32 is
The number of teeth of the carrier 34 is
Whereby the reduction ratio of the first part
At this time, the output rotation speed direction of the planet carrier 34 is consistent with the input rotation speed direction of the sun gear 31; the second portion is decelerated to rotational movement of the output ring gear 44 to maintain the first portion decelerated movement; in particular the sun gear 31, the ring gear 32 and the planet carrier 34 already according to the reduction ratio when the rotational movement is transmitted to the output ring gear 44
When the speed reducer moves, in order to keep the speed reducer of the first part moving, the planet gears 33 on the planet carrier 34 are simultaneously meshed with the internal gear 32 ring and the output gear ring 44, so the output gear ring 44 rotates according to the rotating direction of the planet carrier 34 to compensate the number of teeth of the output gear ring 44 which is more than that of the internal gear ring 32, if the number of teeth of the output gear ring 44 is the same as that of the internal gear ring 32
The output ring gear 44 rotates in the same direction every rotation of the carrier 34
Teeth, so that the second partial reduction gear ratio
In summary, in the entire reduction mechanism, the sun gear 31 receives the rotation speed, the output ring gear 44 receives the reduced rotation speed, and the reduction ratio
(ii) a Preferably, the number of teeth of the sun gear 31 is 33, the number of teeth of the planet gear 33 is 36, the number of teeth of the inner gear ring 32 is 105, and the number of teeth of the output gear ring 44 is 108; the difference between the number of teeth of the ring gear 32 and the output ring gear 44 is 3, which is substituted into the formula, so that the reduction ratio of the whole reduction mechanism is calculated to be 150.54545, and the rotation direction is consistent with the rotation direction of the sun gear. The planet wheels 33 are only transmitting and the reduction ratio is independent of their number of teeth. The number of teeth of the sun gear, the number of teeth of the inner gear ring and the number of teeth of the output gear ring can be adjusted to obtain different reduction ratios.
Be different from prior art, the utility model discloses few poor planetary reducer of tooth can export great reduction ratio, has high rigidity, big moment of torsion, stable rotation moment, high bearing capacity's characteristics.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.
Claims (8)
1. A planetary reducer with small tooth difference comprises a mounting flange, wherein one end of the mounting flange is provided with a power part, the other end of the mounting flange is provided with a planetary reduction mechanism, the front end of the planetary speed reducing mechanism is connected with a crossed roller bearing, the power part drives the planetary speed reducing mechanism to move so as to drive the crossed roller bearing to output power, it is characterized in that the planetary reduction mechanism comprises a sun gear connected with the power part, an inner gear ring fixedly connected with the mounting flange, a planet gear and a planet carrier, the crossed roller bearing comprises an outer ring, an inner ring and a roller, the outer ring is fixedly connected with the inner gear ring, the inner side of the inner ring is provided with an output gear ring, the upper part of the outer ring of the planet gear is meshed with the inner gear ring in the axial direction, the other parts are meshed with an output gear ring, the inner side of the inner ring is in transmission connection with a planet carrier, the front end of the inner ring is connected with an output end, and the number of teeth of the output gear ring is greater than that of the inner gear ring.
2. The planetary reduction gear according to claim 1, wherein the number of the sun gear teeth is
And the number of teeth of the inner gear ring is
The output of the output gear ring is
A reduction ratio of
。
3. The small tooth difference planetary reducer according to claim 2, wherein the upper left half of the outer ring of the planet gear in the axial direction is meshed with the inner gear ring, and the right half is meshed with the output gear ring.
4. The planetary reducer of claim 3, wherein the output ring gear is located at the left end of the inner side of the inner ring gear, and a bearing is installed at the right side of the output ring gear, and the inner ring gear is connected with the planet carrier through the bearing.
5. The planetary reducer with small tooth difference according to any one of claims 1 to 4, wherein the left end of the inner gear ring is connected to the mounting flange through a fastening screw, and the right end of the inner gear ring is connected to the outer ring through a fastening screw.
6. A planetary reducer according to claim 5, in which the planet gears are connected to the planet carrier by locating pins, and needles are mounted between the planet gears and the locating pins.
7. The planetary reduction gear according to claim 6, wherein the output end is an output flange, and the output flange is connected to a front end of the inner ring by a fastening screw.
8. The planetary reducer of claim 7, wherein a clamp is further mounted in the mounting flange, and the output shaft of the power section passes through the clamp to connect with the sun gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922155670.1U CN211778773U (en) | 2019-12-05 | 2019-12-05 | Planetary speed reducer with small tooth difference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922155670.1U CN211778773U (en) | 2019-12-05 | 2019-12-05 | Planetary speed reducer with small tooth difference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211778773U true CN211778773U (en) | 2020-10-27 |
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ID=72974169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922155670.1U Active CN211778773U (en) | 2019-12-05 | 2019-12-05 | Planetary speed reducer with small tooth difference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211778773U (en) |
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2019
- 2019-12-05 CN CN201922155670.1U patent/CN211778773U/en active Active
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