CN110966356A - Planetary speed reducer with small tooth difference - Google Patents

Planetary speed reducer with small tooth difference Download PDF

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Publication number
CN110966356A
CN110966356A CN201911232675.8A CN201911232675A CN110966356A CN 110966356 A CN110966356 A CN 110966356A CN 201911232675 A CN201911232675 A CN 201911232675A CN 110966356 A CN110966356 A CN 110966356A
Authority
CN
China
Prior art keywords
ring
gear
output
planetary
gear ring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911232675.8A
Other languages
Chinese (zh)
Inventor
郑志仪
任国华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuxi Hengyitong Machinery Co ltd
Original Assignee
Wuxi Hengyitong Machinery Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuxi Hengyitong Machinery Co ltd filed Critical Wuxi Hengyitong Machinery Co ltd
Priority to CN201911232675.8A priority Critical patent/CN110966356A/en
Publication of CN110966356A publication Critical patent/CN110966356A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/08—General details of gearing of gearings with members having orbital motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • F16H2001/325—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear comprising a carrier with pins guiding at least one orbital gear with circular holes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • F16H2001/327—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear with orbital gear sets comprising an internally toothed ring gear

Abstract

The invention discloses a planetary reducer with small tooth difference, wherein one end of a 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 reduction mechanism is connected with a crossed roller bearing, the power part drives the planetary reduction 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 planetary gear and a planetary 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 planetary gear in the axial direction is meshed with the inner gear ring, the rest part of the outer ring is meshed. Through the mode, the planetary reducer with small tooth difference can output a larger reduction ratio, and has the characteristics of high rigidity, large torque, stable rotating torque and high bearing capacity.

Description

Planetary speed reducer with small tooth difference
Technical Field
The invention relates to the field of speed reducers, in particular to a planetary speed reducer with small tooth difference.
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 invention mainly solves the technical problem of providing a planetary reducer with small tooth difference, which can output larger reduction ratio and has the characteristics of high rigidity, large torque, stable rotating torque and high bearing capacity.
In order to solve the technical problems, the invention adopts a technical scheme that: 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 a preferred embodiment of the present invention, the number of the sun gears isAnd the number of teeth of the inner gear ring isThe output of the output gear ring isA reduction ratio of。
In a preferred embodiment of the invention, the axially upper left half part of the outer ring of the planet wheel is meshed with the inner gear ring, and the axially upper right half part of the outer ring of the planet wheel is meshed with the output gear ring.
In a preferred embodiment of the invention, the output gear ring is located at the left end of the inner side of the inner ring, a bearing is installed at the right side of the output gear ring, and the inner ring is connected with the planet carrier through the bearing.
In a preferred embodiment of the invention, 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 with the outer ring through a fastening screw.
In a preferred embodiment of the invention, the planet wheels are connected to the planet carrier through positioning pins, and needle rollers are arranged between the planet wheels and the positioning pins.
In a preferred embodiment of the 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 invention, a clamping clamp is further installed in the mounting flange, and the output shaft of the power part penetrates through the clamping clamp to be connected with the sun gear.
The invention has the beneficial effects that: the planetary reducer with small tooth difference can output larger reduction ratio, and has the characteristics of high rigidity, large torque, stable rotating torque and high bearing capacity.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic structural diagram of a planetary reduction gear with small teeth difference according to a preferred embodiment of 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 clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within 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 isAnd the number of teeth of the ring gear 32 isThe output of the output ring gear 44 isA 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 32The number of the planet wheels 33 isAnd the number of teeth of the ring gear 32 isThe number of teeth of the carrier 34 isWhereby the reduction ratio of the first partAt 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 44When 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 32The output ring gear 44 rotates in the same direction every rotation of the carrier 34Teeth, so that the second partial reduction gear ratioIn 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 3133, 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.
Compared with the prior art, the planetary reducer with small tooth difference can output larger reduction ratio, and has the characteristics of high rigidity, large torque, stable rotating torque and high bearing capacity.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the 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 isAnd the number of teeth of the inner gear ring isThe output of the output gear ring isA 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.
CN201911232675.8A 2019-12-05 2019-12-05 Planetary speed reducer with small tooth difference Pending CN110966356A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911232675.8A CN110966356A (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
CN201911232675.8A CN110966356A (en) 2019-12-05 2019-12-05 Planetary speed reducer with small tooth difference

Publications (1)

Publication Number Publication Date
CN110966356A true CN110966356A (en) 2020-04-07

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CN201911232675.8A Pending CN110966356A (en) 2019-12-05 2019-12-05 Planetary speed reducer with small tooth difference

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112431914A (en) * 2020-11-19 2021-03-02 何金仙 Precision positioning self-locking bearing speed reducer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112431914A (en) * 2020-11-19 2021-03-02 何金仙 Precision positioning self-locking bearing speed reducer

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