CN107575541B - Has the planetary reduction gear of few teeth difference deceleration mechanism - Google Patents

Has the planetary reduction gear of few teeth difference deceleration mechanism Download PDF

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Publication number
CN107575541B
CN107575541B CN201710808009.9A CN201710808009A CN107575541B CN 107575541 B CN107575541 B CN 107575541B CN 201710808009 A CN201710808009 A CN 201710808009A CN 107575541 B CN107575541 B CN 107575541B
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China
Prior art keywords
teeth difference
gear
few teeth
deceleration mechanism
planetary
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CN201710808009.9A
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CN107575541A (en
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胡文超
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CHONGQING QINGPING MACHINERY Co Ltd
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CHONGQING QINGPING MACHINERY Co Ltd
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Abstract

The invention discloses a kind of planetary reduction gears for having few teeth difference deceleration mechanism, it is directly fixed in a circumferential direction with the planet carrier of planetary gear speed reducing mechanism by few teeth difference input shaft, both the planetary gear that planetary gear speed reducing mechanism had been utilized can greatly increase occlusal contact area between gear, the high advantage of increase load, bearing capacity, it is again big by means of few teeth difference deceleration mechanism gear range, it is easy to the characteristics of exporting large torque, so that the advantages of whole retarder has been provided simultaneously with high-mechanic and big output;And on the basis of primary planet deceleration mechanism serial less-tooth-difference deceleration mechanism reaches and reduces retarder axial dimension, it is connected by forming the side output panel of the ring gear of planetary gear speed reducing mechanism and few teeth difference deceleration mechanism, the load to single part can be greatly reduced, and under the conditions of Same Efficieney, single part size can be done smaller, so that retarder complete machine, in the case where meeting same output torque, transmission ratio, relatively existing NGW planetary reducer volume is smaller, and weight is lighter.

Description

Has the planetary reduction gear of few teeth difference deceleration mechanism
Technical field
The present invention relates to retarder field, in particular to a kind of planetary reduction gear for having few teeth difference deceleration mechanism.
Background technique
NGW planetary reducer is a kind of existing common retarder equipment, is had the characteristics that small in size, light-weight. For large transmission ratio and the large torque output for guaranteeing NGW planetary reducer, the multistage concatenated mode of NGW planetary mechanism is mostly used It realizes, i.e., usually said multistage (including second level, three-level, level Four etc.) NGW planetary reduction gear.And this multistage planet mechanism string The planetary reducer of connection, axial dimension is higher, and number of parts is more, and retarder machine volume is big, structure bulky, very It is not easy to carry and use, and manufacturing cost is higher.
Therefore, it is necessary to improve to existing planetary gear type reduction gear, same output torque, biography can be met In the case where dynamic ratio, relatively existing NGW planetary reducer has a lesser axial dimension, less number of parts, and So that the volume of retarder complete machine becomes smaller significantly, main screw lift is reduced.
Summary of the invention
In view of this, the present invention provides a kind of planetary reduction gear for having few teeth difference deceleration mechanism, can satisfy same defeated Out in the case where torque, transmission ratio, relatively existing NGW planetary reducer, have lesser axial dimension, less zero Number of packages amount, and the volume of retarder complete machine is become smaller significantly, reduce main screw lift.
The planetary reduction gear of tool few teeth difference deceleration mechanism of the invention, including the planetary gear speed reducing mechanism as primary transmission pair With the few teeth difference deceleration mechanism as secondary transmission pair;
Planetary gear speed reducing mechanism include as power input sun gear, with sun gear external toothing setting planetary gear and with row The planetary annular of star-wheel internal messing, planetary gear speed reducing mechanism further include the planet carrier for being used to form power output, planet carrier and every One planetary gear is fixedly connected;
Few teeth difference deceleration mechanism includes at least the few teeth difference input shaft for power input, and few teeth difference input shaft subtracts with planet The planet carrier of fast mechanism is formed a fixed connection in a circumferential direction for power transmission.
Further, few teeth difference input shaft be axially through hollow structure.
Further, the end of few teeth difference input shaft is formed with radial flange, and few teeth difference input shaft and planet carrier pass through radial direction Flange forms circumference and is fixedly connected.
Further, few teeth difference deceleration mechanism further includes eccentric bushing, gear with small teeth difference I, gear with small teeth difference II, output panel and lacks Tooth difference ring gear, bias are set on the periphery of few teeth difference input shaft, and gear with small teeth difference I and gear with small teeth difference II are with phase For the mode of 180 ° of difference along eccentric bushing to being arranged, eccentric bushing drives gear with small teeth difference I and gear with small teeth difference II around few tooth The revolution motion of the axis of poor ring gear and spinning motion around own axes, output panel and gear with small teeth difference I and few teeth difference tooth II transmission cooperation of wheel is used for power output.
Further, two-phase potential difference is arranged on eccentric bushing to be 180 ° and respectively correspond and gear with small teeth difference I and gear with small teeth difference II eccentric block being rotatably assorted.
Further, output panel includes the drive plate I and drive plate II that two gear with small teeth difference two sides are disposed in parallel in along axial direction, The both ends of few teeth difference input shaft penetrate two drive plates along axial direction and are rotatably assorted in circumferencial direction formation;Drive plate I and transmission By forming a fixed connection in the uniformly distributed planet pin of circumferencial direction between disk II.
Further, the planetary reduction gear for having few teeth difference deceleration mechanism further includes shell, and drive plate I and drive plate II are and shell Body forms rotational support cooperation.
Further, drive plate I and drive plate II, which are formed by two tapered roller bearings and shell that are disposed opposite to each other, rotates Support cooperation.
Further, the integrally formed axle sleeve being provided with for power output, the periphery of axle sleeve are formed on drive plate I Power output gear ring.
Beneficial effects of the present invention: the planetary reduction gear of tool few teeth difference deceleration mechanism of the invention, by the way that few teeth difference is subtracted The few teeth difference input shaft of fast mechanism is directly solid in a circumferential direction with the planet carrier as planetary gear speed reducing mechanism power delivery section It is shaped as power cooperation, that is, the planetary gear that planetary gear speed reducing mechanism is utilized can greatly increase occlusal contact area between gear, increase negative It carries, the advantage that bearing capacity is high, and big by means of few teeth difference deceleration mechanism gear range, is easy to the characteristics of exporting large torque, So that whole retarder has been provided simultaneously with the advantages of high-mechanic and big output;
And on the basis of primary planet deceleration mechanism serial less-tooth-difference deceleration mechanism reaches and reduces retarder axial dimension, It is connected by forming the side output panel of the ring gear of planetary gear speed reducing mechanism and few teeth difference deceleration mechanism, it further reduces and subtracts The axial dimension of fast device entirety, so that retarder complete machine is in the case where meeting same output torque, transmission ratio, it is relatively existing NGW planetary reducer volume is smaller, and weight is lighter.
Detailed description of the invention
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is schematic structural view of the invention.
Specific embodiment
Fig. 1 is schematic structural view of the invention, as shown in the figure: the planetary reduction gear of the tool few teeth difference deceleration mechanism of the present embodiment Device, including the planetary gear speed reducing mechanism as primary transmission pair and as the few teeth difference deceleration mechanism of secondary transmission pair;
Planetary gear speed reducing mechanism include as power input sun gear 2, with 2 external toothing of sun gear setting planetary gear 3 and With the planetary annular 4 of 3 internal messing of planetary gear, planetary gear speed reducing mechanism further includes the planet carrier 5 for being used to form power output, planet Frame 5 is fixedly connected with each planetary gear 3;In the present embodiment, planetary gear speed reducing mechanism is primary planet mechanism, and sun gear 2 passes through flower Key and external line shaft are sequentially connected, and planetary gear 3 is arranged two, three or is greater than three, the planetary reducer of the present embodiment Structure forms power output end by planet carrier 5, and planet carrier 5 is fixedly connected by pin shaft with planetary gear 3;
Few teeth difference deceleration mechanism includes cooperating for the few teeth difference input shaft 6 of power input, with the transmission of few teeth difference input shaft Less teeth difference transmission component and with less teeth difference transmission component transmission with merges be used for few teeth difference power output output panel, few teeth difference The planet carrier 5 of input shaft 6 and planetary gear speed reducing mechanism is formed a fixed connection in a circumferential direction for power transmission;Output panel includes The drive plate I and drive plate II for being disposed in parallel in less teeth difference transmission component two sides along axial direction and being mutually permanently connected, few tooth The both ends of poor input shaft penetrate two drive plates along axial direction and are rotatably assorted in circumferencial direction formation, the planet of planetary gear speed reducing mechanism Ring gear is fixedly connected in a circumferential direction with drive plate II;The power of planetary gear speed reducing mechanism is few from the input of few teeth difference input shaft 6 Tooth difference speed reducing mechanism;As shown, drive plate I is located at downside for power output, drive plate II is located at the top of diagram, planet Ring gear can be fixed in a circumferential direction with drive plate II 12, can be realized by screw, at this time drive plate II 12 just not as Power output, but inputted as power, the power after slowing down only is exported from drive plate I, that is, (general from external impetus axis For motor) input power be driven after slowing down through sun gear, planet carrier, few teeth difference input shaft and few teeth difference deceleration mechanism all the way To drive plate II 12, another way drives to drive plate II 12 through planetary gear, planetary annular and drive plate I 11, passes through two-way Dynamic retarding transmitting is completed in path, and two-way power converges again, is transferred to drive plate II 12, can not only reduce to single part Load, and under the conditions of Same Efficieney, single part size can be done smaller, the axial dimension of complete machine is further reduced, Reduce the overall volume and weight of planetary reduction gear.
In the present embodiment, few teeth difference input shaft 6 be axially through hollow structure;Few teeth difference input shaft 6 be axially through Structure can be used for line inside few teeth difference input shaft 6.
In the present embodiment, the end of few teeth difference input shaft 6 is formed with radial flange 7, few teeth difference input shaft 6 and planet carrier 5 Circumference is formed by radial flange 7 to be fixedly connected;Guarantee alignment.
In the present embodiment, few teeth difference deceleration mechanism further includes eccentric bushing 8, gear with small teeth difference I 9, gear with small teeth difference II 10, defeated The periphery of few teeth difference input shaft 6, gear with small teeth difference I 9 and few teeth difference is arranged in placing and few teeth difference ring gear, eccentric bushing 8 Gear II 10 is arranged in a manner of 180 ° of phase phase difference along 8 axial alignment of eccentric bushing, and eccentric bushing 8 drives gear with small teeth difference I 9 and lacks Revolution motion of the tooth difference gear II 10 around the axis of few teeth difference ring gear and the spinning motion around own axes, output panel and few tooth Poor gear I 9 and the transmission cooperation of gear with small teeth difference II 10 are used for power output;Gear with small teeth difference refers to that its number of teeth is slightly less than few teeth difference The number of teeth of ring gear.
Two-phase potential difference is arranged in the present embodiment, on eccentric bushing 8 to be 180 ° and respectively correspond and gear with small teeth difference I 9 and few tooth The eccentric block that poor gear II 10 is rotatably assorted;Two gear with small teeth difference are respectively set on an eccentric block, are provided on eccentric block partially Mandrel is held, and eccentric bushing 8 can be the integral structure with few teeth difference input shaft 6, can also be individually arranged and is fixed on few teeth difference input shaft 6 Independent structure, few teeth difference input shaft 6 rotates under the drive of planet carrier 5, and few teeth difference input shaft 6 drives two by eccentric bushing 8 Gear with small teeth difference does revolution motion and spinning motion, and drives output panel output power.
In the present embodiment, by being formed in the uniformly distributed planet pin 13 of circumferencial direction between drive plate I 11 and drive plate II 12 It is fixedly connected;The both ends of few teeth difference input shaft 6 penetrate two drive plates along axial direction and are rotatably assorted in circumferencial direction formation;Few tooth The both ends of poor input shaft 6 pass through bearing respectively and two drive plates cooperate.
In the present embodiment, the planetary reduction gear of tool few teeth difference deceleration mechanism further includes shell 14, drive plate I 11 and drive plate II 12 form rotational support cooperation with shell 14.
In the present embodiment, two tapered roller bearings 15 and shell of drive plate I 11 and drive plate II 12 by being disposed opposite to each other Body 14 forms rotational support cooperation.
In the present embodiment, the integrally formed axle sleeve 16 being provided with for power output, the circumference of axle sleeve 16 on drive plate I 11 Outside is formed with power output gear ring 1.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this In the scope of the claims of invention.

Claims (9)

1. a kind of planetary reduction gear for having few teeth difference deceleration mechanism, it is characterised in that: including subtracting as the planet of primary transmission pair Fast mechanism and few teeth difference deceleration mechanism as secondary transmission pair;
The planetary gear speed reducing mechanism include for power input sun gear, with sun gear external toothing setting planetary gear and with row The planetary annular of star-wheel internal messing, the planetary gear speed reducing mechanism further include the planet carrier for being used to form power output, the row Carrier is fixedly connected with each planetary gear;
Few teeth difference deceleration mechanism includes cooperating for the few teeth difference input shaft of power input, with the transmission of few teeth difference input shaft Less teeth difference transmission component and with the transmission of less teeth difference transmission component with the output panel merged for few teeth difference power output, it is described to lack tooth The planet carrier of poor input shaft and the planetary gear speed reducing mechanism is formed a fixed connection in a circumferential direction for power transmission;It is described defeated Placing includes the drive plate I and drive plate for being disposed in parallel in less teeth difference transmission component two sides along axial direction and being mutually permanently connected II, the both ends of the few teeth difference input shaft penetrate two drive plates along axial direction and are rotatably assorted in circumferencial direction formation, the row The planetary annular of star deceleration mechanism is fixedly connected in a circumferential direction with the drive plate II.
2. the planetary reduction gear of tool few teeth difference deceleration mechanism according to claim 1, it is characterised in that: the few teeth difference is defeated Enter axis be axially through hollow structure.
3. the planetary reduction gear of tool few teeth difference deceleration mechanism according to claim 1, it is characterised in that: the few teeth difference is defeated The end for entering axis is formed with radial flange, and the few teeth difference input shaft forms circumference by the radial flange with planet carrier and fixes Connection.
4. the planetary reduction gear of tool few teeth difference deceleration mechanism according to claim 1, it is characterised in that: the few teeth difference passes Dynamic component includes eccentric bushing, gear with small teeth difference I, gear with small teeth difference II and few teeth difference ring gear, and the bias is set on described The periphery of few teeth difference input shaft, the gear with small teeth difference I and gear with small teeth difference II are in a manner of 180 ° of phase phase difference along partially The heart covers axial alignment setting, and the eccentric bushing drives the gear with small teeth difference I and gear with small teeth difference II around few teeth difference ring gear The revolution motion of axis and spinning motion around own axes.
5. the planetary reduction gear of tool few teeth difference deceleration mechanism according to claim 4, it is characterised in that: on the eccentric bushing Two-phase potential difference is arranged to be 180 ° and respectively correspond the eccentric block being rotatably assorted with gear with small teeth difference I and gear with small teeth difference II.
6. the planetary reduction gear of tool few teeth difference deceleration mechanism according to claim 4, it is characterised in that: drive plate I and biography By forming a fixed connection in the uniformly distributed planet pin of circumferencial direction between Moving plate II, the planet pin is fitted through along axial gap Gear with small teeth difference I and gear with small teeth difference II.
7. the planetary reduction gear of tool few teeth difference deceleration mechanism according to claim 6, it is characterised in that: the tool few teeth difference The planetary reduction gear of deceleration mechanism further includes shell, and the drive plate I and drive plate II form rotational support with the shell Cooperation.
8. the planetary reduction gear of tool few teeth difference deceleration mechanism according to claim 7, it is characterised in that: the drive plate I Rotational support cooperation is formed by two tapered roller bearings and shell that are disposed opposite to each other with drive plate II.
9. the planetary reduction gear of tool few teeth difference deceleration mechanism according to claim 6, it is characterised in that: the drive plate I The upper integrally formed axle sleeve being provided with for power output, the periphery of the axle sleeve are formed with power output gear ring.
CN201710808009.9A 2017-09-08 2017-09-08 Has the planetary reduction gear of few teeth difference deceleration mechanism Active CN107575541B (en)

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Publication number Priority date Publication date Assignee Title
CN108331895A (en) * 2018-04-18 2018-07-27 南京信息工程大学 Few teeth difference big retarding compares composite speed reducer
CN110739798B (en) * 2018-07-18 2020-11-10 六环传动(西安)科技有限公司 Planetary gear motor capable of realizing full closed-loop control and joint robot

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* Cited by examiner, † Cited by third party
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CN1262772C (en) * 2001-07-09 2006-07-05 周干绪 A type of speed reducer or speed-varying device with sprocket-wheel drive assembly
JP5032382B2 (en) * 2008-04-17 2012-09-26 Ntn株式会社 Motor drive device and in-wheel motor drive device
CN101825067B (en) * 2010-05-01 2012-11-07 吴声震 Wind generating cycloidal pitch-controlled speed reducer
CN202082348U (en) * 2011-06-16 2011-12-21 重庆妙奇丰科技有限公司 Yaw speed reducer
CN207111848U (en) * 2017-09-08 2018-03-16 重庆清平机械有限责任公司 Compact type planetary speed reducer with small tooth number difference

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