CN113757316A - Planetary reducer with small speed ratio transmission - Google Patents

Planetary reducer with small speed ratio transmission Download PDF

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Publication number
CN113757316A
CN113757316A CN202111063032.2A CN202111063032A CN113757316A CN 113757316 A CN113757316 A CN 113757316A CN 202111063032 A CN202111063032 A CN 202111063032A CN 113757316 A CN113757316 A CN 113757316A
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output
input
shaft
flange
bearing
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CN202111063032.2A
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Chinese (zh)
Inventor
安利书
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Newstart Gear Transmission Co ltd
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Newstart Gear Transmission Co ltd
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Priority to CN202111063032.2A priority Critical patent/CN113757316A/en
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    • 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
    • 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
    • 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
    • F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
    • 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
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Retarders (AREA)

Abstract

The invention discloses a planetary reducer with small speed ratio transmission, which relates to the technical field of reducers and comprises an input flange, a connecting flange, a planetary transmission mechanism and an output flange; an input shaft is arranged in the connecting flange; an output shaft is arranged in the output flange; the planetary transmission mechanism comprises a duplex inner gear ring, an input sun gear shaft, an input planet gear, a duplex planet carrier and an output planet gear; the input planet wheel is meshed with the inner gear ring at the input end of the duplex inner gear ring and the input planet wheel is meshed with the input sun gear shaft; the output planet gear is meshed with the inner gear ring at the output end of the duplex inner gear ring and the output planet gear is meshed with the output sun gear. The duplex planet carrier is respectively connected with the input-stage planetary gear and the output-stage planetary gear, so that transmission from the input sun gear shaft to the duplex planetary gear and then to the output sun gear is realized, parameters of all gears are properly adjusted, theoretically, any speed ratio between 0 and 2 of the speed ratio of the planetary reducer can be met, and the speed ratio requirements of different working conditions are met.

Description

Planetary reducer with small speed ratio transmission
Technical Field
The invention relates to the technical field of speed reducers, in particular to a planetary speed reducer with small speed ratio transmission.
Background
The planetary reducer is an industrial product with wide application, and can reduce the rotating speed of a motor and increase the output torque. The planetary reducer can be used as a matched component for industries such as hoisting, digging, transportation, building and the like.
At present, most of planetary reducers on the market can only realize the speed ratio of more than 2 and less than or equal to 2 and cannot be designed and produced due to the limitation of the principle of planetary reduction transmission. Under some working conditions, if the speed reducer needs to realize transmission with the speed ratio less than or equal to 2, the conventional planetary speed reducer cannot meet the requirement, and only other transmission modes can be considered.
Disclosure of Invention
The invention aims to provide a planetary reducer with small-speed-ratio transmission, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a planetary reducer with small speed ratio transmission comprises an input flange, a connecting flange, a planetary transmission mechanism and an output flange, wherein the input flange, the connecting flange, the planetary transmission mechanism and the output flange are fixedly connected in sequence from an input end to an output end; an input shaft is installed in the connecting flange, the input shaft is rotatably connected with the connecting flange through a first bearing, and the input shaft is a hollow shaft; the input end of the input shaft extends into the input flange; an output shaft is arranged in the output flange and is rotationally connected with the output flange through a second bearing and a third bearing; the output shaft extends out of the output flange; the planetary transmission mechanism comprises a duplex inner gear ring, an input sun gear shaft, an input planet gear, a duplex planet carrier and an output planet gear, two ends of the duplex inner gear ring are respectively and fixedly connected with a connecting flange and an output flange, the duplex inner gear ring comprises an input end and an output end, the input end of the input sun gear shaft is connected with the output end of an input shaft in a key mode, and the output end of the output sun gear is connected with the input end of an output shaft in a key mode; the duplex planet carrier is provided with a group of first pin holes and a group of second pin holes along the axial position; a first pin is fixedly inserted into the first pin hole, the input planet wheel is rotatably mounted on the first pin through a first needle bearing, the input planet wheel is meshed with an inner gear ring at the input end of the dual inner gear ring, and the input planet wheel is meshed with an input sun gear shaft; a second pin is fixedly inserted in the second pin hole, the output planet wheel is rotatably mounted on the second pin through a second needle bearing, and the output planet wheel is meshed with an inner gear ring at the output end of the duplex inner gear ring and meshed with the output sun gear.
As a further scheme of the invention: and the first bearing outer ring is sleeved with a first sealing ring matched with the inner cavity of the connecting flange.
As a still further scheme of the invention: and the connecting flange is internally embedded with a first hole elastic check ring matched with the first bearing.
As a still further scheme of the invention: and the input shaft is also embedded with a first shaft elastic retainer ring matched with the first bearing.
As a still further scheme of the invention: and a second sealing ring matched with the inner cavity of the output flange is sleeved on the outer ring of the third bearing.
As a still further scheme of the invention: and an elastic retainer ring for a second hole matched with the third bearing is embedded in the output flange.
As a still further scheme of the invention: and an elastic retainer ring for a second shaft matched with the third bearing is also embedded on the output shaft.
Compared with the prior art, the invention has the following beneficial effects:
1. the duplex planet carrier is respectively connected with the input-stage planetary gear and the output-stage planetary gear, so that transmission from the input sun gear shaft to the duplex planetary gear and then to the output sun gear is realized, parameters of all gears are properly adjusted, theoretically, any speed ratio between 0 and 2 of the speed ratio of the planetary reducer can be met, and the speed ratio requirements of different working conditions are met;
2. the existing defects of standard planetary gear transmission are broken through, and small-speed-ratio transmission is realized;
3. the speed reducer has the advantages of simple structure, strong controllability, good safety, high transmission efficiency, low energy consumption and excellent performance by adopting gear transmission.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic diagram of an explosive structure according to an embodiment of the present invention.
Fig. 3 is an exploded schematic view of the planetary transmission mechanism according to the embodiment of the present invention.
Fig. 4 is a schematic view of an assembly structure according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of the planetary transmission mechanism according to the embodiment of the invention.
Notations for reference numerals: 1-input flange, 2-input shaft, 21-elastic check ring for first shaft, 3-connecting flange, 31-elastic check ring for first hole, 4-first bearing, 41-first seal ring, 5-planetary transmission mechanism, 51-duplex inner gear ring, 52-input sun gear shaft, 53-input planet gear, 531-first pin, 532-first needle bearing, 54-duplex planet carrier, 541-first pin hole, 542-second pin hole, 55-output planet gear, 551-second pin, 552-second needle bearing, 56-output sun gear, 6-output shaft, 61-flexible planet carrier, 62-output shaft, 7-second bearing, 8-third bearing, 81-second seal ring, 82-elastic check ring for second hole, 9-output flange.
Detailed Description
The present invention will be described in detail with reference to the following embodiments, wherein like or similar elements are designated by like reference numerals throughout the several views, and wherein the shape, thickness or height of the various elements may be expanded or reduced in practice. The examples are given solely for the purpose of illustration and are not intended to limit the scope of the invention. Any obvious modifications or variations can be made to the present invention without departing from the spirit or scope of the present invention.
Examples
Referring to fig. 1 to 4, in the embodiment of the present invention, a planetary speed reducer with small speed ratio transmission includes an input flange 1, a connecting flange 3, a planetary transmission mechanism 5 and an output flange 9, where the input flange 1, the connecting flange 3, the planetary transmission mechanism 5 and the output flange 9 are sequentially and fixedly connected from an input end to an output end;
an input shaft 2 is installed in the connecting flange 3, the input shaft 2 is rotatably connected with the connecting flange 3 through a first bearing 4, the input shaft 2 is a hollow shaft, and power input can be performed by feeding a motor output shaft into the input shaft 2 and locking the motor output shaft through a bolt; a first sealing ring 41 matched with the inner cavity of the connecting flange 3 is sleeved on the outer ring of the first bearing 4, so that the sealing property is ensured; a first hole elastic check ring 31 matched with the first bearing 4 is embedded in the connecting flange 3, the position of the first bearing 4 in the connecting flange 3 can be kept relatively fixed through the first hole elastic check ring 31, a first shaft elastic check ring 21 matched with the first bearing 4 is also embedded in the input shaft 2, the positions of the first bearing 4 and the input shaft 2 can be kept relatively fixed through the first shaft elastic check ring 21, and the positions of the input shaft 2, the connecting flange 3 and the first bearing 4 are kept relatively fixed through the matching of the first shaft elastic check ring 21 and the first hole elastic check ring 31, so that a speed reducer is convenient to install; the input end of the input shaft 2 extends into the input flange 1, a through hole for installing a bolt is formed in the side surface of the input flange 1, and a plastic hole plug is arranged at the through hole;
an output shaft 6 is arranged in the output flange 9, and the output shaft 6 is rotatably connected with the output flange 9 through a second bearing 7 and a third bearing 8; a second sealing ring 81 matched with the inner cavity of the output flange 9 is sleeved on the outer ring of the third bearing 8, so that the sealing property is ensured; a second hole elastic check ring 91 matched with the third bearing 8 is embedded in the output flange 9, the position of the third bearing 8 in the output flange 9 can be kept relatively fixed through the second hole elastic check ring 91, a second shaft elastic check ring 61 matched with the third bearing 8 is also embedded on the output shaft 6, the positions of the third bearing 8 and the output shaft 6 can be kept relatively fixed through the second shaft elastic check ring 61, and the positions of the output shaft 6, the second bearing 7, the third bearing 8 and the output flange 9 are kept relatively fixed through the matching of the second hole elastic check ring 91 and the second shaft elastic check ring 61, so that a speed reducer is convenient to install; the output shaft 6 extends out of the output flange 9;
the planetary transmission mechanism 5 comprises a duplex ring gear 51, an input sun gear shaft 52, an input planet gear 53, a duplex planet carrier 54 and an output planet gear 55, two ends of the duplex ring gear 51 are fixedly connected with the connecting flange 3 and the output flange 9 respectively, the duplex ring gear 51 comprises an input end and an output end, the input end of the input sun gear shaft 52 is connected with the output end of the input shaft 2 in a key mode, and the output end of the output sun gear 56 is connected with the input end of the output shaft 6 in a key mode; a group of first pin holes 541 and a group of second pin holes 542 are formed in the duplex planet carrier 54 along the axial direction; a first pin 531 is fixedly inserted into the first pin hole 541, the input planet gear 53 is rotatably mounted on the first pin 531 through a first needle bearing 532, the input planet gear 53 is engaged with the inner gear ring at the input end of the dual inner gear ring 51, and the input planet gear 53 is engaged with the input sun gear shaft 52; a second pin 551 is fixedly inserted into the second pin hole 542, the output planet gear 55 is rotatably mounted on the second pin 551 through a second needle bearing 552, the output planet gear 55 is meshed with an inner gear ring at the output end of the duplex inner gear ring 51, and the output planet gear 55 is meshed with the output sun gear 56; when the input shaft 2 rotates, the input sun gear shaft 52 is driven to rotate, the input planet gears 53 are driven to rotate circumferentially, the input planet gears 53 drive the output planet gears 55 to rotate synchronously through the duplex planet carrier 54, so that the output sun gear 56 is driven to rotate, and the output shaft 6 rotates along with the input sun gear; the duplex planet carrier 54 is connected with the input stage planetary gear and the output stage planetary gear respectively, so that transmission from the input sun gear shaft 52 to the duplex planetary gear and then to the output sun gear 56 is realized, and finally, low-speed-ratio transmission is realized.
Referring to fig. 5, the speed ratio calculation formula is as follows:
Figure BDA0003257124090000051
after selecting each gear tooth count, a speed ratio is calculated, an example of which is as follows:
Za＝15 Zd＝42
Zb＝28 Ze＝21
Zc＝75 Zf＝84
Figure BDA0003257124090000052
the parameters of Za, Zc, Zd and Zf are properly adjusted, theoretically, any speed ratio between 0-2 of the speed ratio of the planetary speed reducer can be met, the speed ratio requirements of different working conditions are met, the existing defects of standard planetary gear transmission are overcome, small-speed-ratio transmission is realized, the speed reducer is simple in structure, strong in controllability and good in safety, and the gear transmission is adopted, so that the transmission efficiency is high, the energy consumption is low, and the performance is excellent.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (7)

1. A planetary reducer with small speed ratio transmission comprises an input flange (1), a connecting flange (3), a planetary transmission mechanism (5) and an output flange (9), wherein the input flange (1), the connecting flange (3), the planetary transmission mechanism (5) and the output flange (9) are fixedly connected in sequence from an input end to an output end; it is characterized in that the preparation method is characterized in that,
an input shaft (2) is installed in the connecting flange (3), the input shaft (2) is rotatably connected with the connecting flange (3) through a first bearing (4), and the input shaft (2) is a hollow shaft; the input end of the input shaft (2) extends into the input flange (1);
an output shaft (6) is installed in the output flange (9), and the output shaft (6) is rotatably connected with the output flange (9) through a second bearing (7) and a third bearing (8); the output shaft (6) extends out of the output flange (9);
the planetary transmission mechanism (5) comprises a duplex inner gear ring (51), an input sun gear shaft (52), an input planet gear (53), a duplex planet carrier (54) and an output planet gear (55), two ends of the duplex inner gear ring (51) are respectively and fixedly connected with a connecting flange (3) and an output flange (9), the duplex inner gear ring (51) comprises two inner gear rings at an input end and an output end, the input end of the input sun gear shaft (52) is connected with the output end of the input shaft (2) in a key mode, and the output end of the output sun gear (56) is connected with the input end of the output shaft (6) in a key mode; the duplex planet carrier (54) is provided with a group of first pin holes (541) and a group of second pin holes (542) along the axial position; a first pin (531) is fixedly inserted into the first pin hole (541), the input planet wheel (53) is rotatably mounted on the first pin (531) through a first needle bearing (532), the input planet wheel (53) is meshed with an inner gear ring at the input end of the dual inner gear ring (51), and the input planet wheel (53) is meshed with the input sun gear shaft (52); a second pin (551) is fixedly inserted into the second pin hole (542), the output planet wheel (55) is rotatably mounted on the second pin (551) through a second needle bearing (552), the output planet wheel (55) is meshed with an inner gear ring at the output end of the duplex inner gear ring (51), and the output planet wheel (55) is meshed with the output sun gear (56).
2. The planetary reducer according to claim 1, wherein the first sealing ring (41) matched with the inner cavity of the connecting flange (3) is sleeved on the outer ring of the first bearing (4).
3. A planetary reducer according to claim 1, in which the flange (3) has a circlip (31) fitted into it for the first bore, which circlip cooperates with the first bearing (4).
4. A planetary reducer according to claim 3, in which the input shaft (2) is fitted with a circlip (21) for the first shaft that engages with the first bearing (4).
5. The planetary reducer according to claim 2, wherein the second sealing ring (81) matched with the inner cavity of the output flange (9) is sleeved on the outer ring of the third bearing (8).
6. A planetary reducer according to claim 3 or 4, in which a second circlip (91) for the bore is fitted inside the output flange (9) and engages with the third bearing (8).
7. The planetary reducer according to claim 7, wherein a second shaft circlip (61) engaged with the third bearing (8) is further embedded in the output shaft (6).
CN202111063032.2A 2021-09-10 2021-09-10 Planetary reducer with small speed ratio transmission Pending CN113757316A (en)

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003273A (en) * 1974-03-30 1977-01-18 Wilson-Miller & Co. Ltd. Multi-ratio transmission systems
CN201053478Y (en) * 2007-04-27 2008-04-30 重庆大江工业(集团)有限责任公司 Small velocity ratio rear planet row auxiliary transmission
JP2008215408A (en) * 2007-02-28 2008-09-18 Aisin Aw Co Ltd Automatic transmission for vehicle
CN102155521A (en) * 2010-02-11 2011-08-17 宁波宏协离合器有限公司 Planetary gear mechanism and mechanical speed changer comprising same
JP2015140811A (en) * 2014-01-27 2015-08-03 富士通周辺機株式会社 Differential reduction gear and differential reduction method
CN205298420U (en) * 2015-12-31 2016-06-08 浙江迈力机电有限公司 Syntropy dual output planet gear
CN206352643U (en) * 2016-12-28 2017-07-25 武汉科技大学 Wind power speed-increasing machine gear-box
CN107061686A (en) * 2017-06-16 2017-08-18 郑州大学 A kind of differential type planetary reduction gear of superelevation speed reducing ratio
CN109882557A (en) * 2019-03-21 2019-06-14 吉林博承传动系统科技有限公司 A kind of compound planet gear hub reduction gear
CN111237417A (en) * 2020-01-08 2020-06-05 广东亿嘉和科技有限公司 Rotary-type series elastic driving mechanism

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003273A (en) * 1974-03-30 1977-01-18 Wilson-Miller & Co. Ltd. Multi-ratio transmission systems
JP2008215408A (en) * 2007-02-28 2008-09-18 Aisin Aw Co Ltd Automatic transmission for vehicle
CN201053478Y (en) * 2007-04-27 2008-04-30 重庆大江工业(集团)有限责任公司 Small velocity ratio rear planet row auxiliary transmission
CN102155521A (en) * 2010-02-11 2011-08-17 宁波宏协离合器有限公司 Planetary gear mechanism and mechanical speed changer comprising same
JP2015140811A (en) * 2014-01-27 2015-08-03 富士通周辺機株式会社 Differential reduction gear and differential reduction method
CN205298420U (en) * 2015-12-31 2016-06-08 浙江迈力机电有限公司 Syntropy dual output planet gear
CN206352643U (en) * 2016-12-28 2017-07-25 武汉科技大学 Wind power speed-increasing machine gear-box
CN107061686A (en) * 2017-06-16 2017-08-18 郑州大学 A kind of differential type planetary reduction gear of superelevation speed reducing ratio
CN109882557A (en) * 2019-03-21 2019-06-14 吉林博承传动系统科技有限公司 A kind of compound planet gear hub reduction gear
CN111237417A (en) * 2020-01-08 2020-06-05 广东亿嘉和科技有限公司 Rotary-type series elastic driving mechanism

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