CN108050211A - NN type Hypocycloid pinwheel planetary reduction gears - Google Patents
NN type Hypocycloid pinwheel planetary reduction gears Download PDFInfo
- Publication number
- CN108050211A CN108050211A CN201711365756.6A CN201711365756A CN108050211A CN 108050211 A CN108050211 A CN 108050211A CN 201711365756 A CN201711365756 A CN 201711365756A CN 108050211 A CN108050211 A CN 108050211A
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- China
- Prior art keywords
- level
- pin tooth
- hypocycloid
- retainer
- gear ring
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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
- 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
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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
- 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
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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
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
- F16H57/082—Planet carriers
-
- 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
- F16H2001/323—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 eccentric crankshafts driving or driven by a gearing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The NN type Hypocycloid pinwheel planetary reduction gears of the present invention, including input crank axle, duplex pin tooth retainer, level-one hypocycloid gear ring, two level hypocycloid gear ring, output disk holder and sealing ring；Duplex pin tooth retainer includes level-one pin tooth retainer and two level pin tooth retainer, and input crank axle is arranged in the centre bore of duplex pin tooth retainer and is connected with centre bearing between duplex pin tooth retainer；Level-one hypocycloid gear ring is connected with input crankshaft rotation, and level-one pin tooth retainer is equipped with level-one pin tooth, and level-one hypocycloid gear ring is equipped with the level-one hypocycloid gear teeth；Two level pin tooth retainer is equipped with two level pin tooth, and two level hypocycloid gear ring is equipped with the two level hypocycloid gear teeth；Output disk holder is rotatablely connected with two level hypocycloid gear ring and is fixedly connected with level-one hypocycloid gear ring, and sealing ring is arranged in the sealing element fit clearance formed between output disk holder and two level hypocycloid gear ring.The present invention have the advantages that gearratio greatly, it is high transmission accuracy, simple and compact for structure.
Description
Technical field
The invention belongs to retarder technical field more particularly to a kind of NN types Hypocycloid pinwheel planetary reduction gears.
Background technology
Retarder is essential a kind of mechanical device in most modern machine, be typically mounted on transmission shaft it
Between, for reducing rotating speed and increase torque.Current mechanical process industry proposes more the service life of retarder, intensity, reliability
High requirement, and it is small, light-weight, and speed increasingly obtains extensive concern than big retarder.
Traditional NN type speed reducers employ Involute planetary gear drive with small teeth difference structure, can realize that large speed ratio passes
Dynamic, it is 30-200 to commonly use ratio coverage, has the characteristics that compact-sized, stable movement.Its gear uses involute profile, can
It is processed on ordinary gear machining tool, therefore there is good development prospect at home, at present in light industry, chemical industry, food
Product, weaving, metallurgy, building, military equipment etc. are used widely.It is traditional but due in its structure
There is the shortcomings that bearing capacity is not high, transmission efficiency is relatively low, service life is not long for NN type speed reducers.With industry it is continuous
Development, the NN type involute planetaries of traditional structure have been unable to reach high rigidity, high-precision, high load, longevity
The new industry requirements such as life.
The content of the invention
It is an object of the invention to provide a kind of NN types Hypocycloid pinwheel planetary reduction gears, it is intended to solve in the prior art
Retarder transmission accuracy is poor, the technical issues of Gear Contact stress is larger, transmission efficiency is low, transmission stiffness is low.
To achieve the above object, the technical solution adopted by the present invention is：A kind of NN types Hypocycloid pinwheel planetary reduction gear,
Including input crank axle, duplex pin tooth retainer, level-one hypocycloid gear ring, two level hypocycloid gear ring, output disk holder and close
Seal；The duplex pin tooth retainer includes the level-one pin tooth retainer being connected with each other and two level pin tooth retainer, and described double
Connection pin tooth retainer offers the centre bore through the level-one pin tooth retainer and the two level pin tooth retainer, described defeated
Enter crank axle to be arranged in the centre bore and be connected with center between the input crank axle and the duplex pin tooth retainer
Bearing；
The outer circle wall of the level-one pin tooth retainer is equipped with the uniformly distributed level-one pin tooth of several annulars, in the level-one
Cycloid gear ring is arranged on outside the level-one pin tooth retainer and is connected with the input crankshaft rotation, and the level-one hypocycloid
The inner peripheral wall of gear ring is equipped with several level-one hypocycloid gear teeth being connected with each level-one pin tooth engagement；The two level pin tooth
The outer circle wall of retainer is equipped with the uniformly distributed two level pin tooth of several annulars, and the two level hypocycloid gear ring is arranged on the two level
Outside pin tooth retainer, and the inner peripheral wall of the two level hypocycloid gear ring is connected equipped with several with each two level pin tooth engagement
The two level hypocycloid gear teeth；
The output disk holder is arranged on outside the two level hypocycloid gear ring and connects with the two level hypocycloid ring gear against rotation
Connect and be fixedly connected with the level-one hypocycloid gear ring, and output disk holder and the two level hypocycloid gear ring it
Between formed sealing element fit clearance, the sealing ring be arranged on the sealing element fit clearance in.
Preferably, the outer circle wall of the level-one pin tooth retainer is equipped with the uniformly distributed level-one pin tooth socket of several annulars, respectively
The level-one pin tooth is respectively contained in each level-one pin tooth socket；The outer circle wall of the two level pin tooth retainer is equipped with
The uniformly distributed two level pin tooth socket of several annulars, each two level pin tooth are respectively contained in each two level pin tooth socket.
Preferably, each level-one pin tooth is integrally formed with the level-one pin tooth retainer, each two level pin tooth and institute
State the integrated molding of two level pin tooth retainer.
Preferably, each level-one pin tooth is in cycloidal for what is formed on the inner peripheral wall of the level-one pin tooth retainer
The first arc convex, each two level pin tooth is forms in cycloidal on the inner peripheral wall of the two level pin tooth retainer
The second arc convex.
Preferably, the level-one pin tooth retainer is integrally formed with the two level pin tooth retainer；Or the level-one pin
Tooth retainer is detachably connected with the two level pin tooth retainer.
Preferably, the input crank axle includes input shaft part and the gearratio of cycloid axle formation being connected with the input shaft part, described
Gearratio of cycloid axle formation is compared with the central axis eccentric setting for inputting shaft part, and the gearratio of cycloid axle formation is arranged in the centre bore
Interior, the input shaft part is extended out to outside the centre bore.
Preferably, the outer diameter of the level-one pin tooth retainer is more than the outer diameter of the two level pin tooth retainer.
Preferably, it is equipped with the connecting hole arranged along the length direction of the input crank axle in the input crank axle.
Preferably, clutch shaft bearing is equipped between the level-one hypocycloid gear ring and the input crank axle, in the level-one
Cycloid gear ring is fixedly connected with the outer ring of the clutch shaft bearing, and the inner ring of the input crank axle and the clutch shaft bearing is fixed
Connection；Second bearing, the two level hypocycloid gear ring are equipped between the two level hypocycloid gear ring and the output disk holder
It is fixedly connected with the inner ring of the second bearing, the output disk holder is fixedly connected with the outer ring of the second bearing.
Preferably, the level-one hypocycloid gear ring is equipped with the first dowel hole, and the output disk holder is equipped with and institute
Corresponding second dowel hole in the first dowel hole position is stated, the output disk holder wears described first by fastener
Dowel hole is fixedly connected with the level-one hypocycloid gear ring with second dowel hole.
Beneficial effects of the present invention：The NN type Hypocycloid pinwheel planetary reduction gears of the present invention, input crank axle pass through itself
Eccentric structure drive the movement of duplex pin tooth retainer, duplex pin tooth retainer rotation process passes through duplex pin tooth retainer
The level-one pin tooth set on level-one pin tooth retainer is nibbled with the level-one hypocycloid gear teeth realization set in level-one hypocycloid gear ring
It closes, the engaged transmission process of the level-one hypocycloid gear teeth and level-one pin tooth acts power and reaction force, realizes that duplex pin tooth is protected
Rotation and revolution of the frame around retarder center are held, when level-one hypocycloid gear ring is fixed, duplex pin tooth retainer in transmission process
Engagement with level-one pin tooth realizes that the first order of retarder is slowed down.Meanwhile deceleration of the duplex pin tooth retainer Jing Guo the first order passes
It is delivered to the second level of duplex pin tooth retainer, i.e., the two level pin tooth set on the two level pin tooth retainer of duplex pin tooth retainer
With the two level hypocycloid gear teeth meshing set in two level hypocycloid gear ring, the two level hypocycloid gear teeth engage biography with two level pin tooth
Dynamic process equally acts power and reaction force, so as to pass through the two level pin tooth retainer and two in duplex pin tooth retainer
Grade pin tooth engagement realizes that the second level of retarder is slowed down so that two level hypocycloid gear ring to be driven to be exported in the form of rotating.
The NN type Hypocycloid pinwheel planetary reduction gears of the present invention substitute existing NN with cycloidal profile and pinwheel engaging structure
Involute profile structure in type planetary speed reducer with small tooth number difference, had both kept the spy that NN types structure driven is bigger than scope, compact-sized
Point, and remain cycloidal profile and rigidity during pin tooth engagement and intensity height, transmission efficiency, smooth running are reliable etc. special
Point.And due to being multiple tooth while engaging in transmission process, the contact stress peak value suffered by cycloidal profile is also much smaller than monodentate
The involute gear of engagement greatly improves the service life of retarder.In addition, the form using cycloidal-pin wheel internal messing
The manufacture difficulty of processing with cycloidal profile part is greatly reduced, so as to be more suitable for having high-precision, high efficiency, longevity
Order the modern manufacturing industry of requirement.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, embodiment or the prior art will be retouched below
Attached drawing is briefly described needed in stating, it should be apparent that, the accompanying drawings in the following description is only the one of the present invention
A little embodiments, for those of ordinary skill in the art, without having to pay creative labor, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the front view of NN types Hypocycloid pinwheel planetary reduction gear provided in an embodiment of the present invention.
Fig. 2 is the Section View of the line A-A along Fig. 1.
Fig. 3 is the side view of NN types Hypocycloid pinwheel planetary reduction gear provided in an embodiment of the present invention.
Fig. 4 is the Section View of the line B-B along Fig. 3.
Fig. 5 is the Section View of the line C-C along Fig. 3.
Fig. 6 is the structural exploded view schematic diagram of NN types Hypocycloid pinwheel planetary reduction gear provided in an embodiment of the present invention.
Fig. 7 is that the structure of the input crank axle of NN types Hypocycloid pinwheel planetary reduction gear provided in an embodiment of the present invention is shown
It is intended to.
Fig. 8 is the one of the duplex pin tooth retainer of NN types Hypocycloid pinwheel planetary reduction gear provided in an embodiment of the present invention
The structure diagram of kind embodiment.
Fig. 9 is the knot of the level-one pin tooth retainer of NN types Hypocycloid pinwheel planetary reduction gear provided in an embodiment of the present invention
Structure schematic diagram.
Figure 10 is the knot of the two level pin tooth retainer of NN types Hypocycloid pinwheel planetary reduction gear provided in an embodiment of the present invention
Structure schematic diagram.
Figure 11 is the structure of the output disk holder of NN types Hypocycloid pinwheel planetary reduction gear provided in an embodiment of the present invention
Schematic diagram.
Figure 12 is the another of the duplex pin tooth retainer of NN types Hypocycloid pinwheel planetary reduction gear provided in an embodiment of the present invention
A kind of structure diagram of embodiment.
Wherein, each reference numeral in figure：
10-level-one hypocycloid gear ring 11-level-one hypocycloid the 12-the first dowel hole of the gear teeth
13-clutch shaft bearing, 20-two level hypocycloid gear ring 21-two level hypocycloid gear teeth
30-input crank axle 31-input 32-gearratio of cycloid axle formation of shaft part
33-connecting hole, 40-duplex pin tooth retainer 41-level-one pin tooth retainer
42-two level pin tooth retainer, 43-centre bore 50-output disk holder
51-sealing element fit clearance, 53-second bearing of the 52-the second dowel hole
60-sealing ring, 70-level-one pin tooth 80-two level pin tooth
90-centre bearing, 411-level-one pin tooth socket 421-two level pin tooth socket.
Specific embodiment
The embodiment of the present invention is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or has the function of same or like element.Below with reference to
The embodiment that attached drawing 1~12 describes is exemplary, it is intended to for explaining the present invention, and it is not intended that limit of the invention
System.
In the description of the present invention, it is to be understood that term " length ", " width ", " on ", " under ", "front", "rear",
The orientation or position relationship of the instructions such as "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer " is based on attached drawing institutes
The orientation or position relationship shown is for only for ease of the description present invention and simplifies description rather than instruction or imply signified dress
It puts or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limit of the invention
System.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that indicating or implying relatively important
Property or the implicit quantity for indicating indicated technical characteristic." first " is defined as a result, the feature of " second " can be expressed
Or implicitly include one or more this feature.In the description of the present invention, " multiple " are meant that two or two
More than, unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation "
Wait terms that should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；It can be machine
Tool is connected or is electrically connected；It can be directly connected, can also be indirectly connected by intermediary, can be two members
The interaction relationship of connection or two elements inside part.It for the ordinary skill in the art, can be according to tool
Body situation understands the concrete meaning of above-mentioned term in the present invention.
As shown in Fig. 1~2, a kind of NN types Hypocycloid pinwheel planetary reduction gear provided in an embodiment of the present invention, " NN " table
Show in transmission process and be made of two-stage internal messing, " NN " transmission mechanism is a kind of little gear difference planetary driving mechanism.
Wherein, with reference to shown in Fig. 1~2, NN type Hypocycloid pinwheel planetary reduction gears specifically include input crank axle 30, double
Join pin tooth retainer 40, level-one hypocycloid gear ring 10, two level hypocycloid gear ring 20, output disk holder 50 and sealing ring 60；Institute
Stating duplex pin tooth retainer 40 includes the level-one pin tooth retainer 41 being connected with each other and two level pin tooth retainer 42, and described double
Connection pin tooth retainer 40 offers the centre bore through the level-one pin tooth retainer 41 and the two level pin tooth retainer 42
43, the input crank axle 30 is arranged in the centre bore 43 and the input crank axle 30 is kept with the duplex pin tooth
Centre bearing 90 is connected between frame 40.
Further, as shown in Fig. 1~2, the outer circle wall of the level-one pin tooth retainer 41 is equipped with several annulars
The level-one pin tooth 70 of cloth, it is outer and bent with the input that the level-one hypocycloid gear ring 10 is arranged on the level-one pin tooth retainer 41
Arbor 30 is rotatablely connected, and the inner peripheral wall of the level-one hypocycloid gear ring 10 is nibbled equipped with several with each level-one pin tooth 70
Close the level-one hypocycloid gear teeth 11 of connection；It is uniformly distributed that the outer circle wall of the two level pin tooth retainer 42 is equipped with several annulars
Two level pin tooth 80, the two level hypocycloid gear ring 20 is arranged on outside the two level pin tooth retainer 42, and the two level hypocycloidal tooth
The inner peripheral wall of circle 20 is equipped with several two level hypocycloid gear teeth 21 that connection is engaged with each two level pin tooth 80.
Further, as shown in Fig. 1~2, the output disk holder 50 is arranged on outside the two level hypocycloid gear ring 20 simultaneously
It is rotatablely connected with the two level hypocycloid gear ring 20 and is fixedly connected with the level-one hypocycloid gear ring 10, and the output
Sealing element fit clearance 51 is formed between disk holder 50 and the two level hypocycloid gear ring 20, the sealing ring 60 is arranged on institute
It states in sealing element fit clearance 51.
The NN type Hypocycloid pinwheel planetary reduction gears of the embodiment of the present invention are substituted with cycloidal profile and pinwheel engaging structure
Involute profile structure in existing NN types planetary speed reducer with small tooth number difference, had both kept that NN types structure driven is bigger than scope, structure is tight
The characteristics of gathering, and remain during cycloidal profile and pin tooth engagement that rigidity and intensity height, transmission efficiency, smooth running can
By the features such as.And due to being multiple tooth while engaging in transmission process, the contact stress peak value suffered by cycloidal profile is also remote small
In the involute gear of monodentate engagement, the service life of retarder is greatly improved.In addition, using cycloidal-pin wheel internal messing
Form has been greatly reduced the manufacture difficulty of processing with cycloidal profile part, so as to be more suitable for having in high precision, efficiently
Rate, the modern manufacturing industry of high life requirement.
Specifically, carried out using the NN type Hypocycloid pinwheels planetary reduction gear in the deceleration transmission course of work, pass through motor
By the eccentric structure of itself duplex pin tooth retainer 40 is driven to move to input crank axle 30,40 turns of duplex pin tooth retainer
The level-one pin tooth 70 and level-one hypocycloidal tooth set on the level-one pin tooth retainer 41 that dynamic process passes through duplex pin tooth retainer 40
The level-one hypocycloid gear teeth 11 set in circle 10 realize engagement, the engaged transmission of the level-one hypocycloid gear teeth 11 and level-one pin tooth 70
Process acts power and reaction force, realizes rotation and revolution of the duplex pin tooth retainer 40 around retarder center, works as level-one
When hypocycloid gear ring 10 is fixed, the engagement realization retarder of duplex pin tooth retainer 40 and level-one pin tooth 70 in transmission process
The first order is slowed down.Meanwhile deceleration of the duplex pin tooth retainer 40 Jing Guo the first order is transferred to the of duplex pin tooth retainer 40
The two level pin tooth 80 set on the two level pin tooth retainer 42 of two level, i.e. duplex pin tooth retainer 40 and two level hypocycloid gear ring
The two level hypocycloid gear teeth 21 set in 20 engage, and the two level hypocycloid gear teeth 21 and the engaged transmission process of two level pin tooth 80 are same
Sample acts power and reaction force, so as to pass through the two level pin tooth retainer 42 in duplex pin tooth retainer 40 and two level pin
Tooth 80 engages that two level hypocycloid gear ring 20 is driven to export in the form of rotation, realizes that the second level of retarder is slowed down.
Wherein, because on the one hand level-one hypocycloid gear ring 10 and the rotation connection of input crank axle 30 may insure that input is bent
Arbor 30 will not be subject to the interference of level-one hypocycloid gear ring 10 when rotating；Another aspect level-one hypocycloid gear ring 10 can be with
Ensure the level-one hypocycloid gear teeth 11 set thereon always with being set on the level-one pin tooth retainer 41 of duplex pin tooth retainer 40
Level-one pin tooth 70 engage, to ensure that speed reducer can realize first order reduction of speed.Equally, export in disk holder 50 and two level
On the one hand the rotation connection of cycloid gear ring 20 may insure that two level hypocycloid gear ring 20 will not be subject to export disk holder when rotating
50 interference；On the other hand output disk holder 50 can also carry out /V to two level hypocycloid gear ring 20, it is ensured that pendulum in two level
The two level hypocycloid gear teeth 21 set on line gear ring 20 always on the two level pin tooth retainer 42 of duplex pin tooth retainer 40
The two level pin tooth 80 of setting engages, to ensure that speed reducer can realize second level reduction of speed.
In the present embodiment, pass through the level-one pin tooth retainer 41 of duplex pin tooth retainer 40 and two level pin tooth retainer 42
On level-one pin tooth 70 and two level pin tooth 80 respectively with level-one hypocycloid gear ring 10 in set the level-one hypocycloid gear teeth 11 engage
And the two level hypocycloid gear teeth 21 with being set in two level hypocycloid gear ring 20 engage, and can significantly reduce retarder
Size, the structure for making retarder is compacter.The cycloidal-pin wheel of the NN type Hypocycloid pinwheel planetary reduction gears of the present embodiment is nibbled
Close the transmission efficiency that transmission improves retarder.Compared to traditional involute teeth wheel construction, the NN type hypocycloids of the present embodiment
The tooth logarithm of engagement is more simultaneously in operation for pinwheel planetary reduction gear, and registration is big so that mechanism driving is more steady, efficiency
Higher, noise and vibration are lower.Compared to traditional cycloidal pinwheel planetary gear speed reducer, the NN type Hypocycloid pinwheels of the present embodiment
The structure of planetary reduction gear more simplifies, and is conducive to cycloid drive mechanism and preferably uses.
In addition, with reference to shown in Fig. 1~2, the NN type Hypocycloid pinwheel planetary reduction gears of the present embodiment, only in two level
Sealing element fit clearance 51 between cycloid gear ring 20 and output disk holder 50 is equipped with sealing ring 60, due to two level hypocycloid
Gear ring 20 has simultaneously to be used as output panel, can so be realized output terminal single-side sealing, need not be increased outside outlet side
Seal structural part, so that export structure can be more diversified, using will more extensively.
In the present embodiment, two level hypocycloid gear ring 20 is equipped with pipe thread seal screw hole (not shown) to realize lubrication
Oil injection and discharge.
It is described further with reference to Fig. 3~5：Curtate hypocycloid is a kind of curve in mathematics, the definition of curtate hypocycloid
Be one it is round as a ball do pure rolling in the inside of a basic circle, then the track that the upper fixed point of circle is passed through is known as curtate hypocycloid.
Actual curtate hypocycloid is the outside equidistant curve of the track.This actual curtate hypocycloid i.e. level-one hypocycloid gear ring
The contour shape of the 10 level-one hypocycloid gear teeth 11 and the two level hypocycloid gear teeth 21 of two level hypocycloid gear ring 20.Transmission process
In rotating speed and the biography of torque in engagement process twice realized by level-one hypocycloid gear ring 10 and two level hypocycloid gear ring 20
It passs.
In the present embodiment, as shown in Fig. 6 and Fig. 8~10, level-one pin tooth 70 is connected and two with level-one pin tooth retainer 41
A kind of embodiment that grade pin tooth 80 is connected with two level pin tooth retainer 42 is：The excircle of the level-one pin tooth retainer 41
Wall is equipped with the uniformly distributed level-one pin tooth socket 411 of several annulars, and each level-one pin tooth 70 is respectively contained in each level-one pin tooth
In slot 411；The outer circle wall of the two level pin tooth retainer 42 is equipped with the uniformly distributed two level pin tooth socket 421 of several annulars, each institute
Two level pin tooth 80 is stated to be respectively contained in each two level pin tooth socket 421.Specifically, in the level-one of duplex pin tooth retainer 40
Under the rotation of pin tooth retainer 41 and two level pin tooth retainer 42, level-one pin tooth 70 is subject to set on level-one hypocycloid gear ring 10
The level-one hypocycloid gear teeth 11 active force and rotate in the level-one pin tooth socket 411；Similarly, two level pin tooth 80 is subject in two level
The active force of the two level hypocycloid gear teeth 21 set on cycloid gear ring 20 and rotate in the two level pin tooth socket 421.Wherein, level-one
The section of pin tooth socket 411 substantially semi-circular shape, and the diameter of level-one pin tooth socket 411 is slightly larger than the diameter of level-one pin tooth 70, really
Protect level-one pin tooth 70 has the gap rotated for level-one pin tooth 70 in level-one pin tooth socket 411；Equally, two level pin tooth
The section of slot 421 substantially semi-circular shape, and the diameter of two level pin tooth socket 421 is slightly larger than the diameter of two level pin tooth 80, it is ensured that two
Grade pin tooth 80 has the gap rotated for two level pin tooth 80 in two level pin tooth socket 421.
In the present embodiment, as shown in Fig. 6, Fig. 9~10 and Figure 12, level-one pin tooth 70 is connected with level-one pin tooth retainer 41
And two level pin tooth 80 is with the another embodiment that two level pin tooth retainer 42 is connected：Each level-one pin tooth 70 and institute
Level-one pin tooth retainer 41 is stated to be integrally formed.Specifically, by level-one pin tooth 70 with level-one pin tooth retainer 41 is integrally formed sets
Meter can rub to avoid between level-one pin tooth 70 and level-one pin tooth retainer 41 there are relative motion.That is, phase
For mounting technology of the above-mentioned level-one pin tooth 70 as the Assembly part independently of level-one pin tooth retainer 41, reduce
Friction loss in transmission process improves the transmission efficiency of retarder entirety, and level-one pin tooth 70 is kept with level-one pin tooth
Noise no longer is generated when colliding to each other between frame 41.Simultaneously as level-one pin tooth 70 and level-one pin tooth retainer 41 it
Between be integrally formed, then between level-one pin tooth 70 and level-one pin tooth retainer 41 without carrying out assembling cooperation again, this, simplifies
The trim designs requirement of design accuracy between level-one pin tooth retainer 41 and level-one pin tooth 70, the assembling for simplifying retarder are difficult
Degree.
Similarly, as shown in figure 12, each two level pin tooth 80 is integrally formed with the two level pin tooth retainer 42.Specifically
Ground, will be the advantages of two level pin tooth 80 and two level pin tooth 42 integrally formed design of retainer and above-mentioned by level-one pin tooth 70 and one
The advantages of grade pin tooth retainer 41 is integrally formed design is identical.By the way that level-one pin tooth 70 and level-one pin tooth retainer 41 is integral
Shaping and by two level pin tooth 80 and the 42 integrally formed design of two level pin tooth retainer, can not only avoid in transmission process
Due to level-one pin tooth 70 and two level pin tooth 80 swing and the vibration generated and noise, and effectively avoid because vibration generate
Peak stress caused by level-one pin tooth 70 and two level pin tooth 80 damage.Also, this kind of structure design can entirely to slow down
The quantity of the parts of device is reduced, convenient for manufacturing and assembling.
As shown in figure 12, in this embodiment, each level-one pin tooth 70 is the interior of the level-one pin tooth retainer 41
The first arc convex in cycloidal formed in circumferential wall, each two level pin tooth 80 are the two level pin tooth retainer 42
Inner peripheral wall on the second arc convex in cycloidal for being formed.Specifically, the first arc convex and the second arc convex
Shape is same or similar, equal semicircular in shape strip.It so can be direct one on the outer circle wall of level-one pin tooth retainer 41
Body formed setting level-one pin tooth 70 similarly can directly be integrally formed on the outer circle wall of two level pin tooth retainer 42 and set
Two level pin tooth 80 is reduced to the assembling between level-one pin tooth 70 and level-one pin tooth retainer 41 and two level pin tooth 80 and two level
Assembling between pin tooth retainer 42, for level-one pin tooth 70, level-one pin tooth retainer 41, two level pin tooth 80 and two level pin tooth
The manufacture of retainer 42 is more convenient.
In the present embodiment, as shown in figs. 8 and 12, the level-one pin tooth retainer 41 and the two level pin tooth retainer
42 are integrally formed；Specifically, level-one pin tooth retainer 41 is integrally formed pair that can be formed with two level pin tooth retainer 42
Join 40 integrally-built stability of pin tooth retainer more preferably, avoid because level-one pin tooth retainer 41 and two level pin tooth retainer
Cause there may be loosening between 42 using bad, so that the use of entire retarder is relatively reliable；Also, it is not required to
Individually level-one pin tooth retainer 41 and two level pin tooth retainer 42 are assembled, while the quantity of parts is reduced,
So that the assembling of retarder is more prone to realize.
Alternatively, in other embodiments, the level-one pin tooth retainer 41 and the two level pin tooth can also be kept
Frame 42 is detachably connected.I.e. separately fabricated level-one pin tooth retainer 41 and separately fabricated two level pin tooth retainer 42, then by one
Grade pin tooth retainer 41 couples to be assembled together with two level pin tooth retainer 42 to form duplex pin tooth retainer 40, this spline structure
Duplex pin tooth retainer 40 can equally play the function of its application, this kind of structure design mode can subtract using only other
Level-one pin tooth retainer 41 and two level pin tooth retainer 42 on fast device, avoid waste of material, realize the mesh of efficent use of resources
's.
In the present embodiment, as shown in Figure 2 and Figure 7, it is described input crank axle 30 include input shaft part 31 and with the input
Shaft part 31 connect gearratio of cycloid axle formation 32, the gearratio of cycloid axle formation 32 compared with it is described input shaft part 31 central axis eccentric setting,
And the gearratio of cycloid axle formation 32 is arranged in the centre bore 43, the input shaft part 31 is extended out to outside the centre bore 43.Tool
Body, for being connected with the main shaft of motor, gearratio of cycloid axle formation 32 then stretches into centre bore 43 the input shaft part 31 of input crank axle 30
It is connected by centre bearing 90 with duplex pin tooth retainer 40, when such motor band driven input shaft section 31 rotates, gearratio of cycloid axle formation 32
As the rotation of input shaft part 31 can drive duplex pin tooth retainer 40 to move by the eccentric structure of its own, Jin Ertong
Subsequent first order reduction of speed and second level reduction of speed are realized in the movement for crossing duplex pin tooth retainer 40.
In the present embodiment, as shown in figs. 8 and 12, the outer diameter of the level-one pin tooth retainer 41 is more than the two level pin
The outer diameter of tooth retainer 42.Specifically, the outer diameter of two level pin tooth retainer 42 is smaller than the outer diameter of level-one pin tooth retainer 41, this
The number of teeth of the two level hypocycloid gear teeth 21 formed on sample two level pin tooth retainer 42 is less than what is formed on level-one pin tooth retainer 41
The number of teeth of the level-one hypocycloid gear teeth 11 so can ensure that realization reduction of speed.
In the present embodiment, as shown in fig. 7, being equipped with the length along the input crank axle 30 in the input crank axle 30
The connecting hole 33 of direction arrangement.Specifically, the design of connecting hole 33 can be used for being connected with other shaft like parts, such as can be with
It is directly connected with the main shaft of motor, main function is to realize that the convenient connection to inputting crank axle 30 is installed.
In the present embodiment, as shown in Fig. 1~2, set between the level-one hypocycloid gear ring 10 and the input crank axle 30
There is clutch shaft bearing 13, the level-one hypocycloid gear ring 10 is fixedly connected with the outer ring of the clutch shaft bearing 13, the input crank
Axis 30 is fixedly connected with the inner ring of the clutch shaft bearing 13；Specifically, the effect of clutch shaft bearing 13 is support level-one hypocycloidal tooth
Circle 10 and connection level-one hypocycloid gear ring 10 and input crank axle 30, and ensure that level-one hypocycloid gear ring 10 can be opposite
It remains static in the input crank axle 30 of movement；Further, the two level hypocycloid gear ring 20 is protected with the output panel
It holds and second bearing 53 is equipped between frame 50, the two level hypocycloid gear ring 20 is fixedly connected with the inner ring of the second bearing 53,
The output disk holder 50 is fixedly connected with the outer ring of the second bearing 53.Specifically, the effect of second bearing 53 is
Support two level hypocycloid gear ring 20 and connection output disk holder 50 and two level hypocycloid gear ring 20, it is ensured that two level hypocycloid
Gear ring 20 is used as output panel.
Further, the inner ring of clutch shaft bearing 13 and the inner ring of outer ring and second bearing 53 and outer ring are fixedly connected
The mode that interference fit may be employed in mode is realized.
In the present embodiment, as shown in Fig. 1~2, the level-one hypocycloid gear ring 10 is equipped with the first dowel hole 12, institute
It states output disk holder 50 and is equipped with the second dowel hole 52 corresponding with 12 position of the first dowel hole, the output panel
Retainer 50 wears first dowel hole 12 by fastener (not shown) and is fixedly connected with second dowel hole 52
The level-one hypocycloid gear ring 10.Specifically, bolt and/or positioning is used slightly to pass through the first dowel hole 12 for fastener
With the second dowel hole 52 so as to by level-one hypocycloid gear ring 10 and exporting together with disk holder 50 is locked, such one
Aspect may insure level-one hypocycloid gear ring 10 and export the stability connected between disk holder 50, on the other hand be also convenient for
Dismounting, and then facilitate maintenance and maintenance of the later stage to retarder, it is highly practical.
Further, the first dowel hole 12 and the second dowel hole 52 may be set according to actual conditions as threaded hole
Or unthreaded hole.
Certainly, in the present embodiment, level-one hypocycloid gear ring 10, two level hypocycloid gear ring 20 and output disk holder 50 are set
Pore structure or chamber structure existing for installation necessity are useful for, those skilled in the art know to put in manufacturing level-one
It is to ensure level-one hypocycloid gear ring 10, two level hypocycloid when line gear ring 10, two level hypocycloid gear ring 20 and output disk holder 50
Gear ring 20 and output disk holder 50 can normal mounting and set pore structure or chamber structure, therefore in the present embodiment
It is described in detail not to this.
For to sum up, NN types Hypocycloid pinwheel planetary reduction gear provided in this embodiment at least has following three broad aspect
The advantages of：
First, the NN type Hypocycloid pinwheel planetary reduction gears of the embodiment of the present invention will be in traditional NN type planetary reduction gears
Planetary Involute Gear is improved to hypocycloid pinwheel planetary gearing.This kind of NN driving form causes retarder to have transmission
The characteristics of, small, light weight bigger than scope, transmission efficiency.
2nd, since the NN type Hypocycloid pinwheel planetary reduction gears of the embodiment of the present invention are engaged with hypocycloid flank profil with pinwheel
Driving form substitute involute profile engaged transmission form in existing NN types planetary speed reducer with small tooth number difference, it is multiple tooth to nibble simultaneously
It closes, the contact stress peak value suffered by inner cycloidal gear is much smaller than the involute gear of monodentate engagement, and smooth running, noise is low, can
High by property, impact resistance enhances, and greatly improves the service life and bearing capacity of retarder, and the scope of application is wider.
3rd, the NN type Hypocycloid pinwheel planetary reduction gears of the embodiment of the present invention employ the double internal gearing structures of NN types, and
Traditional NN planetary reduction gears structure is less efficient in gear teeth meshing, and transmission accuracy is not high, it is impossible to large torque of transmission etc.
Shortcoming is also improved.In addition, it is greatly reduced in the form of cycloidal-pin wheel internal messing with cycloidal profile zero
The manufacture of part, processing, assembly difficulty.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of NN types Hypocycloid pinwheel planetary reduction gear, it is characterised in that：Including input crank axle, duplex pin tooth retainer,
Level-one hypocycloid gear ring, two level hypocycloid gear ring, output disk holder and sealing ring；The duplex pin tooth retainer includes mutual
The level-one pin tooth retainer of connection and two level pin tooth retainer, and the duplex pin tooth retainer is offered through the level-one pin
The centre bore of tooth retainer and the two level pin tooth retainer, the input crank axle are arranged in the centre bore and described defeated
Enter and be connected with centre bearing between crank axle and the duplex pin tooth retainer；
The outer circle wall of the level-one pin tooth retainer is equipped with the uniformly distributed level-one pin tooth of several annulars, the level-one hypocycloidal tooth
Circle is arranged on outside the level-one pin tooth retainer and is connected with the input crankshaft rotation, and the level-one hypocycloid gear ring is interior
Circumferential wall is equipped with several level-one hypocycloid gear teeth being connected with each level-one pin tooth engagement；Outside the two level pin tooth retainer
Circumferential wall is equipped with the uniformly distributed two level pin tooth of several annulars, and the two level hypocycloid gear ring is arranged on the two level pin tooth retainer
Outside, and the inner peripheral wall of the two level hypocycloid gear ring is equipped with several two level hypocycloids being connected with each two level pin tooth engagement
The gear teeth；
The output disk holder be arranged on the two level hypocycloid gear ring it is outer and with the two level hypocycloid gear ring be rotatablely connected with
And be fixedly connected with the level-one hypocycloid gear ring, and formed between the output disk holder and the two level hypocycloid gear ring
Sealing element fit clearance, the sealing ring are arranged in the sealing element fit clearance.
2. NN types Hypocycloid pinwheel planetary reduction gear according to claim 1, it is characterised in that：The level-one pin tooth is kept
The outer circle wall of frame is equipped with the uniformly distributed level-one pin tooth socket of several annulars, and each level-one pin tooth is respectively contained in each level-one
In pin tooth socket；The outer circle wall of the two level pin tooth retainer is equipped with the uniformly distributed two level pin tooth socket of several annulars, and each described two
Grade pin tooth is respectively contained in each two level pin tooth socket.
3. NN types Hypocycloid pinwheel planetary reduction gear according to claim 1, it is characterised in that：Each level-one pin tooth with
The level-one pin tooth retainer is integrally formed, and each two level pin tooth is integrally formed with the two level pin tooth retainer.
4. NN types Hypocycloid pinwheel planetary reduction gear according to claim 3, it is characterised in that：Each level-one pin tooth is
The first arc convex in cycloidal formed on the inner peripheral wall of the level-one pin tooth retainer, each two level pin tooth is institute
State the second arc convex in cycloidal formed on the inner peripheral wall of two level pin tooth retainer.
5. NN types Hypocycloid pinwheel planetary reduction gear according to claim 1, it is characterised in that：The level-one pin tooth is kept
Frame is integrally formed with the two level pin tooth retainer；Or the level-one pin tooth retainer and the two level pin tooth retainer it is removable
Unload connection.
6. NN types Hypocycloid pinwheel planetary reduction gear according to claim 1, it is characterised in that：The input crank axle bag
Input shaft part and the gearratio of cycloid axle formation being connected with the input shaft part are included, the gearratio of cycloid axle formation is compared with the center for inputting shaft part
Eccentric axis are set, and the gearratio of cycloid axle formation is arranged in the centre bore, and the input shaft part extends out to the centre bore
Outside.
7. according to claim 1~6 any one of them NN type Hypocycloid pinwheel planetary reduction gears, it is characterised in that：Described one
The outer diameter of grade pin tooth retainer is more than the outer diameter of the two level pin tooth retainer.
8. according to claim 1~6 any one of them NN type Hypocycloid pinwheel planetary reduction gears, it is characterised in that：It is described defeated
Enter the connecting hole for being equipped in crank axle and being arranged along the length direction of the input crank axle.
9. according to claim 1~6 any one of them NN type Hypocycloid pinwheel planetary reduction gears, it is characterised in that：Described one
Clutch shaft bearing, the level-one hypocycloid gear ring and the clutch shaft bearing are equipped between grade hypocycloid gear ring and the input crank axle
Outer ring be fixedly connected, it is described input crank axle be fixedly connected with the inner ring of the clutch shaft bearing；The two level hypocycloid gear ring
Second bearing is equipped between the output disk holder, the two level hypocycloid gear ring and the inner ring of the second bearing are fixed
Connection, the output disk holder are fixedly connected with the outer ring of the second bearing.
10. according to claim 1~6 any one of them NN type Hypocycloid pinwheel planetary reduction gears, it is characterised in that：Described one
Grade hypocycloid gear ring is equipped with the first dowel hole, and the output disk holder is equipped with corresponding with the first dowel hole position
The second dowel hole, it is described output disk holder first dowel hole and second positioning pin are worn by fastener
Hole is fixedly connected with the level-one hypocycloid gear ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711365756.6A CN108050211A (en) | 2017-12-18 | 2017-12-18 | NN type Hypocycloid pinwheel planetary reduction gears |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711365756.6A CN108050211A (en) | 2017-12-18 | 2017-12-18 | NN type Hypocycloid pinwheel planetary reduction gears |
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| Publication Number | Publication Date |
|---|---|
| CN108050211A true CN108050211A (en) | 2018-05-18 |
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| CN201711365756.6A Pending CN108050211A (en) | 2017-12-18 | 2017-12-18 | NN type Hypocycloid pinwheel planetary reduction gears |
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| CN (1) | CN108050211A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120587A (en) * | 2020-01-06 | 2020-05-08 | 河南烛龙高科技术有限公司 | Centrosymmetric single-stage undercut cycloid needle roller speed reducer |
| CN113202905A (en) * | 2021-04-06 | 2021-08-03 | 宝鸡文理学院 | Speed reducer based on two-stage cycloidal pin gear transmission |
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| CN201575110U (en) * | 2009-10-28 | 2010-09-08 | 刘心海 | Eccentric shaft speed reducer |
| CN102777545A (en) * | 2012-08-15 | 2012-11-14 | 中国航天科技集团公司烽火机械厂 | Aircraft and long-service-life electric steering engine thereof |
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| CN111120587A (en) * | 2020-01-06 | 2020-05-08 | 河南烛龙高科技术有限公司 | Centrosymmetric single-stage undercut cycloid needle roller speed reducer |
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| CN113202905A (en) * | 2021-04-06 | 2021-08-03 | 宝鸡文理学院 | Speed reducer based on two-stage cycloidal pin gear transmission |
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Application publication date: 20180518 |