CN204628436U - The RV speed reducer of high performance structures - Google Patents
The RV speed reducer of high performance structures Download PDFInfo
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- CN204628436U CN204628436U CN201520161821.3U CN201520161821U CN204628436U CN 204628436 U CN204628436 U CN 204628436U CN 201520161821 U CN201520161821 U CN 201520161821U CN 204628436 U CN204628436 U CN 204628436U
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Abstract
The utility model discloses a kind of RV speed reducer of high performance structures, comprise primary planet reducing gear, secondary cycloid reduction mechanism, angular contact bearing, the planetary pinion of primary planet reducing gear engages with the central gear of input shaft one end, above-mentioned double reduction mechanism is connected by eccentric shaft, eccentric shaft is three, and three eccentric shafts are uniformly distributed at circumferentially 120 degree, interval; Angular contact ball bearing is integrated type, and namely outer ring is independent, inner ring and output plate rail integral structure.The utility model is rational in infrastructure, long service life.
Description
Technical field
The utility model relates to a kind of RV speed reducer.
Background technique
It is high that RV speed reducer has precision, and volume is little, the feature that bearing torque is high, is widely used in industrial robot field.Fig. 1 is the structure diagram of the traditional RV speed reducer (domestic and international model is 6E, 20E, 40E or similar model) be most widely used at present.RV speed reducer is made up of double reduction mechanism altogether.Input shaft one end is connected with motor, and the other end central gear engages with planetary pinion and forms first order planetary gear speed reducing mechanism.Cycloid wheel, needle roller and pin wheel housing constitute second level cycloid reduction mechanism.This double reduction mechanism is connected by two eccentric shafts, transmits rotating speed and torque.The RV speed reducer of this ting model all adopts two eccentric shafts, every eccentric shaft has two tapered roller bearings, is responsible for transmitting output torque.The RV speed reducer failure mode of more than 90% comes from the wearing and tearing of tapered roller bearing on eccentric shaft.This is due to the RV speed reducer output torque normally variate on industrial robot, and often can exceed nominal torque at short notice.In addition, when industrial robot operating environment is comparatively complicated, RV speed reducer also can meet with impulsive torque once in a while.These irregular tapered roller bearings finally all acted on moment of torsion that is overburdening on eccentric shaft, cause the wearing and tearing of tapered roller bearing, its working life is much smaller than the working life of RV speed reducer other component inner.Therefore, the working life of tapered roller bearing is exactly the working life of RV speed reducer substantially, constrains the raising in RV speed reducer working life.
Summary of the invention
The purpose of this utility model is to provide a kind of rational in infrastructure, the RV speed reducer of the high performance structures of long service life.
Technical solution of the present utility model is:
A kind of RV speed reducer of high performance structures, comprise primary planet reducing gear, secondary cycloid reduction mechanism, angular contact bearing, the planetary pinion of primary planet reducing gear engages with the central gear of input shaft one end, above-mentioned double reduction mechanism is connected by eccentric shaft, it is characterized in that: eccentric shaft is three, three eccentric shafts are uniformly distributed at circumferentially 120 degree, interval; Angular contact ball bearing is integrated type, and namely outer ring is independent, inner ring and output plate rail integral structure.
Planetary pinion is the structural type being embedded in speed reducer inside, or the exposed structural type in speed reducer outside.
Input shaft is from the left side of RV speed reducer (namely near motor side) installation form, or from right side (namely away from the motor side) installation form of RV speed reducer.
When input shaft for installing on the left of RV speed reducer, the right side of RV speed reducer adopts four circular seal rings to be sealed in the hole of the center hole of dress input shaft and three dress eccentric shafts.
The utility model is rational in infrastructure, compares, have following advantage with conventional construction RV speed reducer:
One, under the prerequisite not changing profile installation dimension, be improved to three eccentric shafts, 120 degree of triangles from traditional two eccentric shafts, 180 degree of diagonal angle transmitting torques and be uniformly distributed transmitting torque.This mode impels transmission process more steady, significantly improves the working life of speed reducer.
Two, angular contact ball bearing adopts outer ring independent, inner ring and output plate rail integral structure.This structure can reduce assembling difficulty, improves RV reduction box transmission efficiency.
Three, increase the axial distance of second level cycloid reduction, significantly improve load capacity and the impact resistance of RV speed reducer.
Four, input shaft can insert from the left side of RV speed reducer or right side, and mounting type is flexible.When the planetary pinion end face of input shaft on the left of RV speed reducer is installed, input shaft significantly can shorten length, improve the installation precision of input shaft and actuating motor, and the right side of RV speed reducer can adopt four circular seal rings to carry out hermetically sealed design, reduce the sealing operation in the assembly process of joint of robot position.
Compared with traditional RV speed reducer structure of Fig. 1, the most significantly difference is that two eccentric shafts are increased to three eccentric shafts.Be improved to three eccentric shafts, 120 degree of triangles from traditional two eccentric shafts, 180 degree of diagonal angle transmitting torques and be uniformly distributed transmitting torque.This mode impels transmission process more steady.In addition, the eccentric shaft tapered roller bearing of tradition RV speed reducer easily lost efficacy with moment of torsion that is overburdening because of irregular, newly increase the load that an eccentric shaft can reduce each tapered roller bearing greatly, improve its working life, also significantly improve load capacity and the impact resistance of RV speed reducer simultaneously.
Angular contact ball bearing, by originally split type (Internal and external cycle split-type structural), is improved to integrated type (outer ring is independent, inner ring and output plate rail integral structure).This integrated type angular contact ball bearing can reduce assembling difficulty, improves RV reduction box transmission efficiency.Meanwhile, this integrated type angular contact ball bearing can also shorten the axial distance of two angular contact ball bearings, lengthens the axial distance of second level cycloid reduction.In the cycloid reduction of the second level, in the thickness of cycloid wheel, needle roller length and pin wheel housing tine length all comparatively traditional structure forms increase nearly 20%.Due to the increase of the axial distance of second level cycloid reduction, load capacity and the impact resistance of RV speed reducer significantly improve.
Input shaft of the present utility model can be installed from the left side of RV speed reducer, also can install from the right side of RV speed reducer.These two kinds of structures all bring RV speed reducer mounting type flexibly.
Planetary pinion of the present utility model can be the conventional construction being embedded in speed reducer inside, also can be the exposed modified node method in speed reducer outside.When the planetary pinion end face of input shaft on the left of RV speed reducer is installed, input shaft significantly can shorten length, improve the installation precision of input shaft and actuating motor, and the right side of RV speed reducer can adopt four circular seal rings (center hole and three tapered roller bearing holes) to carry out hermetically sealed design, reduce the sealing operation in the assembly process of joint of robot position.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is traditional RV speed reducer structure schematic diagram.
Fig. 2 is the lateral plan of Fig. 1.
Fig. 3 is the structural representation of the utility model embodiment.
Fig. 4 is the lateral plan of Fig. 3.
Fig. 5 is the schematic diagram that input shaft is installed from the left side of RV speed reducer.
Fig. 6 is the schematic diagram that input shaft is installed from the right side of RV speed reducer.
Fig. 7 is the exposed structural representation in speed reducer outside of planetary pinion.
Fig. 8 is the lateral plan of Fig. 7.
Embodiment
A kind of RV speed reducer of high performance structures, comprise primary planet reducing gear 1, secondary cycloid reduction mechanism 2, angular contact bearing 7, the planetary pinion 3 of primary planet reducing gear engages with the central gear 5 of input shaft 4 one end, above-mentioned double reduction mechanism is connected by eccentric shaft 5, eccentric shaft 6 is three, and three eccentric shafts are uniformly distributed at circumferentially 120 degree, interval; Angular contact ball bearing 7 is integrated type, and namely outer ring is independent, inner ring and output plate rail 8 integral structure.
Planetary pinion is the structural type being embedded in speed reducer inside, or the exposed structural type in speed reducer outside.
Input shaft is from the left side of RV speed reducer (namely near motor side) installation form, or from right side (namely away from the motor side) installation form of RV speed reducer.
When input shaft for installing on the left of RV speed reducer, the right side of RV speed reducer adopts four circular seal rings 9 to be sealed in the hole of the center hole of dress input shaft and three dress eccentric shafts.
Claims (4)
1. the RV speed reducer of a high performance structures, comprise primary planet reducing gear, secondary cycloid reduction mechanism, angular contact bearing, the planetary pinion of primary planet reducing gear engages with the central gear of input shaft one end, above-mentioned double reduction mechanism is connected by eccentric shaft, it is characterized in that: eccentric shaft is three, three eccentric shafts are uniformly distributed at circumferentially 120 degree, interval; Angular contact ball bearing is integrated type, and namely outer ring is independent, inner ring and output plate rail integral structure.
2. the RV speed reducer of high performance structures according to claim 1, is characterized in that: planetary pinion is the structural type being embedded in speed reducer inside, or the exposed structural type in speed reducer outside.
3. the RV speed reducer of high performance structures according to claim 1 and 2, is characterized in that: input shaft is the left side installation form from RV speed reducer, or from the right side installation form of RV speed reducer.
4. the RV speed reducer of high performance structures according to claim 3, it is characterized in that: when input shaft for installing on the left of RV speed reducer, the right side of RV speed reducer adopts four circular seal rings to be sealed in the hole of the center hole of dress input shaft and three dress eccentric shafts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520161821.3U CN204628436U (en) | 2015-03-23 | 2015-03-23 | The RV speed reducer of high performance structures |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520161821.3U CN204628436U (en) | 2015-03-23 | 2015-03-23 | The RV speed reducer of high performance structures |
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| CN204628436U true CN204628436U (en) | 2015-09-09 |
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| CN201520161821.3U Active CN204628436U (en) | 2015-03-23 | 2015-03-23 | The RV speed reducer of high performance structures |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104712710A (en) * | 2015-03-23 | 2015-06-17 | 南通振康焊接机电有限公司 | High-performance structure RV reduction machine |
| CN106931081A (en) * | 2017-04-26 | 2017-07-07 | 珠海飞马传动机械有限公司 | A kind of robot high-accuracy cycloid difference tooth reductor |
| CN108533693A (en) * | 2017-03-02 | 2018-09-14 | 安徽欢颜机器人有限公司 | A kind of totally-enclosed hollow RV speed reducers of robot |
| CN111895045A (en) * | 2020-07-24 | 2020-11-06 | 南通振康机械有限公司 | Novel structure RV speed reducer |
-
2015
- 2015-03-23 CN CN201520161821.3U patent/CN204628436U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104712710A (en) * | 2015-03-23 | 2015-06-17 | 南通振康焊接机电有限公司 | High-performance structure RV reduction machine |
| CN108533693A (en) * | 2017-03-02 | 2018-09-14 | 安徽欢颜机器人有限公司 | A kind of totally-enclosed hollow RV speed reducers of robot |
| CN106931081A (en) * | 2017-04-26 | 2017-07-07 | 珠海飞马传动机械有限公司 | A kind of robot high-accuracy cycloid difference tooth reductor |
| CN111895045A (en) * | 2020-07-24 | 2020-11-06 | 南通振康机械有限公司 | Novel structure RV speed reducer |
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