CN202040278U - Planetary gear speed reducer - Google Patents
Planetary gear speed reducer Download PDFInfo
- Publication number
- CN202040278U CN202040278U CN 201120010865 CN201120010865U CN202040278U CN 202040278 U CN202040278 U CN 202040278U CN 201120010865 CN201120010865 CN 201120010865 CN 201120010865 U CN201120010865 U CN 201120010865U CN 202040278 U CN202040278 U CN 202040278U
- Authority
- CN
- China
- Prior art keywords
- gear
- planetary
- planetary gear
- speed reducer
- planet
- 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.)
- Expired - Fee Related
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 28
- 238000005096 rolling process Methods 0.000 claims description 20
- 230000005540 biological transmission Effects 0.000 claims description 15
- 239000000314 lubricant Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000003754 machining Methods 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
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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
- F16H2001/289—Toothed gearings for conveying rotary motion with gears having orbital motion comprising two or more coaxial and identical sets of orbital gears, e.g. for distributing torque between the coaxial sets
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- General Details Of Gearings (AREA)
- Retarders (AREA)
Abstract
The utility model provides a planetary gear speed reducer with a novel structure, which can retain the high-precision operation of the planetary gear speed reducer under lower machining precision of the planetary gear, and has a compact structure. The planetary gear speed reducer includes a gear drive part and a housing part, wherein the housing part includes a tail end housing and a planetary inner gear housing; the gear drive part includes a plurality of planetary gear sets, a sun gear shaft and a planetary gear bracket shaft body; every planetary gear set consists of two planetary gears mounted in parallel at the two ends of a planetary gear shaft; the planetary gear shaft is mounted on the planetary gear bracket shaft body; and a needle bearing is mounted between the planetary gear shaft and the planetary gear bracket shaft body, so as to enable the planetary gear shaft to rotate relative to the planetary gear bracket shaft body. The planetary gear speed reducer can effectively reduce the manufacture cost of the planetary gear speed reducer and realize the high-precision property.
Description
Technical field
The utility model relates to a kind of speed reducer, particularly a kind of planet-gear speed reducer that is installed on stepper motor or actuating motor.
Background technique
Planetary speed reducer is because of reasons in structure, and single-stage deceleration minimum is 3, and maximum generally is no more than 10, and common reduction speed ratio is: 3.4.5.6.8.10, speed reducer progression generally is no more than 3.Relative other speed reducers, planetary speed reducer have characteristics such as high rigidity, highi degree of accuracy (single-stage can be accomplished in 1 minute), high transmission efficiency (single-stage is at 97%-98%), high moment of torsion/volume ratio, maintenance-free.Because these characteristics, the planetary speed reducer majority is mounted on stepper motor and the actuating motor, is used for reducing rotating speed, promotes moment of torsion, coupling inertia.Wherein, accurate planetary speed reducer is because of the collocation actuating motor, so back clearance grade (arc branch) is quite important.
US7294090 provides a kind of highi degree of accuracy planet-gear speed reducer, and it comprises a casing, and the inside contains shape chamber and internal gear of lubricant oil; Output shaft and planetary gear carrier are one, are installed in the said casing shape chamber by rolling bearing.Planetary gear carrier is a cylindrical body, and a circular concentric chamber is arranged in the cylindrical body, and a plurality of breach are arranged on the cylindrical body, makes the cylindrical outside and shape chamber internal communication; A plurality of planetary pinions are installed in respectively in the middle of these breach by gear shaft, make planetary pinion can pass breach respectively with the engagement of the sun gear of casing internal gear and input shaft.Gapped between planetary pinion endoporus and the back shaft, a plurality of accurate needle rollers are installed in the gap, form rolling bearing.Be carved with circular-arc flute mark at a planetary end face, the groove of flute mark is communicated with gap between the back shaft planetary pinion endoporus with casing shape chamber, and lubricant oil can flow into the gap by groove; Lubricated a plurality of needle rollers make planetary pinion rotate around gear shaft with minimum surface friction drag.The characteristics of this planetary speed reducer are compact structures, the running accuracy height.But, analyze from this planetary manufacturing principle, in order to reach the planet-gear speed reducer running accuracy, the planetary pinion precision must be made high grade of accuracy, this makes the manufacturing process of planet-gear speed reducer complicated.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of planet-gear speed reducer of new structure, can still keep the running of planet-gear speed reducer highi degree of accuracy under lower planetary pinion machining accuracy, and compact structure.
Planet-gear speed reducer described in the utility model comprises gear transmission part and housing parts; Described housing parts comprises tail end housing and planet internal gear housing; Described gear transmission partly comprises several planetary gear set, central gear shaft and planetary carrier axis body, central gear shaft is driven by Power Drive Unit, internal gear engagement on planetary gear set while and central gear shaft and the planet internal gear housing, drive the planetary carrier axis body and rotate, transferring power is given output terminal; Wherein: described each planetary gear set is parallel two planetary pinions that are installed in the planet pin two ends, two planetary opposing end surfaces are installed respectively can axially movable within the specific limits axial plain bearing, two planetary exterior edge faces are installed the gear back-up ring respectively, with the restrictions planetary gear axial float; Described planet pin is installed on the planetary carrier axis body, and installs needle bearing between planet pin and the planetary carrier axis body, make planet pin can and the planetary gear carrier axis body between do and relatively rotate.
Because of the utility model adopts incorporate planetary gear carrier axis body, as improvement, can end ring be set respectively at the rolling bearing place of rolling bearing that supports the rotation of planetary carrier axis body and the rotation of support sun wheel shaft, it is spacing that corresponding rolling bearing is axially moved forward into row.
As further improvement, can install in the exterior edge face of the rolling bearing that supports the rotation of planetary carrier axis body and adjust packing ring, so that gear transmission section axial gap is adjusted.
As another improvement, exterior edge face installation shaft seal ring at the rolling bearing that supports the sun wheel shaft rotation, supporting the rolling bearing place installation seal ring that the planetary carrier axis body rotates simultaneously, and stretch out the housing department office at output terminal Sealing shield ring is set, make housing parts form closed cavity, lubricant oil is stored in the inner chamber, gear transmission partly is lubricated.
The utility model adopts dual planetary gear formation planetary gear set side by side, can effectively improve the characteristic of gear engagement, can realize the sideshake compensation of gear engagement, improves transmission accuracy.On the other hand, planetary swivel bearing is installed in the respective aperture of planetary carrier axis body, avoid the planetary processing technology of manufacturing highi degree of accuracy grade, can reduce manufacture cost effectively, can realize using the planet-gear speed reducer of the utility model manufacturing to have high-precision characteristic again.
Description of drawings
Fig. 1 is the utility model general structure schematic representation;
Fig. 2 is the sectional view of Fig. 1.
Among the figure: the 1-Sealing shield ring; 2-rolling bearing I; 3-end ring I; 4-left gear back-up ring; 5-left lateral star gear; 6-left side axial plain bearing; The 7-planet pin; The 8-needle bearing; The right axial plain bearing of 9-; 10-right lateral star gear; 11-right gear back-up ring; The 12-O RunddichtringO; 13-adjusts packing ring; The 14-socket head screw; The 15-garter spring; 16-tail end housing; The 17-Simmer ring; 18-rolling bearing II; 19-end ring II; 20-rolling bearing III; The 21-central gear shaft; 22-planetary carrier axis body; 23-planet internal gear housing
Embodiment
Now in conjunction with the accompanying drawings the utility model is described further:
As shown in Figure 1 and Figure 2, the utility model comprises gear transmission part and housing parts.Wherein: described housing parts comprises tail end housing 16 and planet internal gear housing 23; Described gear transmission partly comprises central gear shaft 21, planetary carrier axis body 22 and three planetary gear set, and the internal gear engagement on planetary gear set while and central gear shaft 21 and the planet internal gear housing 23 drives planetary carrier axis body 22 and rotates.
As shown in Figure 1, each planetary gear set is parallel left lateral star gear 5 and the right lateral star gear 10 that is installed in planet pin 7 two ends, left lateral star gear 5 is installed left axial plain bearing 6 and right axial plain bearing 9 respectively with the opposing end surface of right lateral star gear 10, left lateral star gear 5 is installed left gear back-up ring 4 and right gear back-up ring 11 respectively with the exterior edge face of right lateral star gear 10, with the restrictions planetary gear axial float; Planet pin 7 is installed in the respective apertures of planetary carrier axis body 22, and installing needle bearing 8 between planet pin 7 and the planetary carrier axis body 22, make planet pin 7 can and planetary gear carrier axis body 22 between do and relatively rotate.
Further describe, as shown in Figure 1 and Figure 2, the right-hand member of gear transmission part described in the utility model compresses garter spring 15 by socket head screw 14, and motor is fastened on the speed reducer central gear shaft 21 again; Driving central gear shaft 21 rotates, transmission of power to three planetary gear set, each planetary gear set comprises by left lateral star gear 5 and right lateral star gear 10, and be connected on the planetary carrier axis body 22 by planet pin 7, left axial plain bearing 6 and right axial plain bearing 9 can axially move within the specific limits simultaneously, left gear back-up ring 4 and right gear back-up ring 11 restrictions planetary gear axial floats, needle bearing 8 make planet pin 7 can and planetary carrier axis body 22 between do relative motion; Internal gear engagement on planetary pinion while and central gear shaft 21 and the planet internal gear housing 23 finally drives planetary carrier axis body 22 and rotates, and transferring power is given output terminal.
As shown in Figure 1, its housing parts mainly is made up of tail end housing 16 and planet internal gear housing 23 two-part; Rolling bearing II 18 supports sun wheel shaft, simultaneously sun wheel shaft and shell is done and be relatively rotated; Rolling bearing I 2 and rolling bearing III20 together support planetary carrier axis body 22, and it can be done sway; End ring I 3, end ring II 19 carry out spacing to moving axially of each corresponding bearing respectively; Adjusting 13 pairs of gear transmission section axials of packing ring gap adjusts; Simmer ring 17, O RunddichtringO 12 and Sealing shield ring 1 are stored in lubricant oil in the inner chamber, and gear transmission is lubricated.
Claims (4)
1. a planet-gear speed reducer comprises gear transmission part and housing parts; Described housing parts comprises tail end housing and planet internal gear housing; Described gear transmission partly comprises several planetary gear set, central gear shaft and planetary carrier axis body, central gear shaft is driven by Power Drive Unit, internal gear engagement on planetary gear set while and central gear shaft and the planet internal gear housing, drive the planetary carrier axis body and rotate, transferring power is given output terminal; It is characterized in that: described each planetary gear set is parallel two planetary pinions that are installed in the planet pin two ends, two planetary opposing end surfaces are installed respectively can axially movable within the specific limits axial plain bearing, two planetary exterior edge faces are installed the gear back-up ring respectively, with the restrictions planetary gear axial float; Described planet pin is installed on the planetary carrier axis body, and installs needle bearing between planet pin and the planetary carrier axis body, make planet pin can and the planetary gear carrier axis body between do and relatively rotate.
2. according to the described planet-gear speed reducer of claim 1, it is characterized in that: the rolling bearing place in rolling bearing that supports the rotation of planetary carrier axis body and the rotation of support sun wheel shaft is provided with end ring respectively, and it is spacing that corresponding rolling bearing is axially moved forward into row.
3. according to the described planet-gear speed reducer of claim 2, it is characterized in that: install in the exterior edge face of the rolling bearing that supports the rotation of planetary carrier axis body and adjust packing ring.
4. according to claim 1,2 or 3 described planet-gear speed reducer, it is characterized in that: at the exterior edge face installation shaft seal ring of the rolling bearing that supports the sun wheel shaft rotation, supporting the rolling bearing place installation seal ring that the planetary carrier axis body rotates simultaneously, and stretch out the housing department office at output terminal Sealing shield ring is set, make housing parts form closed cavity, lubricant oil is stored in the inner chamber, gear transmission partly is lubricated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120010865 CN202040278U (en) | 2011-01-14 | 2011-01-14 | Planetary gear speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120010865 CN202040278U (en) | 2011-01-14 | 2011-01-14 | Planetary gear speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202040278U true CN202040278U (en) | 2011-11-16 |
Family
ID=44967724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120010865 Expired - Fee Related CN202040278U (en) | 2011-01-14 | 2011-01-14 | Planetary gear speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202040278U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878251A (en) * | 2012-10-24 | 2013-01-16 | 银川威力减速器有限公司 | Inverted aerial cableway planetary speed reducer |
| CN104696443A (en) * | 2015-03-12 | 2015-06-10 | 大连理工大学 | A power input and output planetary gear reducer on the same side |
| CN104964003A (en) * | 2015-07-14 | 2015-10-07 | 苏州托玛斯自动化科技有限公司 | Planetary reducer |
-
2011
- 2011-01-14 CN CN 201120010865 patent/CN202040278U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878251A (en) * | 2012-10-24 | 2013-01-16 | 银川威力减速器有限公司 | Inverted aerial cableway planetary speed reducer |
| CN104696443A (en) * | 2015-03-12 | 2015-06-10 | 大连理工大学 | A power input and output planetary gear reducer on the same side |
| CN104696443B (en) * | 2015-03-12 | 2017-04-12 | 大连理工大学 | A power input and output planetary gear reducer on the same side |
| CN104964003A (en) * | 2015-07-14 | 2015-10-07 | 苏州托玛斯自动化科技有限公司 | Planetary reducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhao Qiang Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Zhao Qiang Document name: Notification of Termination of Patent Right |
|
| ASS | Succession or assignment of patent right |
Owner name: WUXI SIJIA ENVIRONMENT PROTECTION TECHNOLOGY CO., Free format text: FORMER OWNER: HOU JUNMING Effective date: 20130206 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130206 Address after: Street Baixia District of Nanjing city in Jiangsu province 210016 No. 66 building 704 room 01B Patentee after: Zhao Qiang Patentee after: Wuxi best environmental protection technology Co., Ltd. Address before: Street Baixia District of Nanjing city in Jiangsu province 210016 No. 66 building 704 room 01B Patentee before: Zhao Qiang Patentee before: Hou Junming |
|
| DD01 | Delivery of document by public notice |
Addressee: Hou Junming Document name: Notification of Passing Examination on Formalities |
|
| DD01 | Delivery of document by public notice |
Addressee: Zhao Qiang Document name: Notification to Pay the Fees |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111116 Termination date: 20140114 |