CN207297757U - A kind of hypocycloid planetary reduction gear of hollow needleless tooth - Google Patents
A kind of hypocycloid planetary reduction gear of hollow needleless tooth Download PDFInfo
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- CN207297757U CN207297757U CN201721311144.4U CN201721311144U CN207297757U CN 207297757 U CN207297757 U CN 207297757U CN 201721311144 U CN201721311144 U CN 201721311144U CN 207297757 U CN207297757 U CN 207297757U
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- output section
- tooth
- retainer
- reduction gear
- planetary reduction
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Abstract
The utility model provides a kind of hypocycloid planetary reduction gear of hollow needleless tooth, including：Retainer；Multiple crank axles, multiple crank axles are installed in rotation on retainer, and each crank axle is equipped with input shaft end and gearratio of cycloid axle formation；Input unit, the gear teeth in input unit are meshed with the gear teeth on input shaft end, and input unit runs through centre bore equipped with first；Cycloidal Wheel, Cycloidal Wheel are equipped with central through hole and multiple assembling through holes, and for multiple crank axles correspondingly through assembling through hole, and gearratio of cycloid axle formation is assemblied in assembling through hole, the hole wall of central through hole is equipped with the hypocycloid gear teeth；Output section, output section is equipped with epicycloidal wheel tooth and second runs through centre bore, and epicycloidal wheel tooth is the bulge-structure on the outer wall of output section, and output section passes through the central through hole of Cycloidal Wheel, and epicycloidal wheel tooth is meshed with the hypocycloid gear teeth.Internal structure complexity, the technical problem of processing difficulties of epicycloid planetary reduction gear existing in the prior art can be solved using the technical program.
Description
Technical field
The utility model belongs to mechanical equipment or robotic technology field, is to be related to a kind of hollow needleless more specifically
The hypocycloid planetary reduction gear of tooth.
Background technology
Mainstream cycloid planetary speed reducer generally realizes deceleration using epicyclodial wheel to do eccentric motion at present.It is this
Reducer structure is generally using planet carrier, output panel or wheel spider (or pin tooth retainer) output.
In the prior art, Cycloidal Wheel and pin tooth external toothing in epicyclic reduction, will be with eccentric shaft (or partially inside Cycloidal Wheel
Heart set) coordinate and realize eccentric motion, it is more complicated so to result in the internal structure of epicycloid planetary reduction gear, processing difficulties.
Utility model content
The purpose of this utility model is to provide a kind of hypocycloid planetary reduction gear of hollow needleless tooth, to solve existing skill
The internal structure of epicycloid planetary reduction gear present in art is complicated, the technical problem of processing difficulties.
To achieve the above object, the technical solution adopted in the utility model is：A kind of hypocycloid of hollow needleless tooth is provided
Planetary reduction gear, including：Retainer；Multiple crank axles, multiple crank axles are installed in rotation on retainer, each crank axle
It is equipped with input shaft end and gearratio of cycloid axle formation；Input unit, the gear teeth in input unit are meshed with the gear teeth on input shaft end, input unit
Run through centre bore equipped with first；Cycloidal Wheel, Cycloidal Wheel are equipped with central through hole and multiple assembling through holes, and multiple crank axles one are a pair of
Ground is answered through assembling through hole, and gearratio of cycloid axle formation is assemblied in assembling through hole, the hole wall of central through hole is equipped with the hypocycloid gear teeth；It is defeated
Go out portion, output section is rotatably installed on retainer, and centre bore, outer pendulum are run through in output section equipped with epicycloidal wheel tooth and second
Line wheel tooth is the bulge-structure on the outer wall of output section, and bulge-structure is integrally formed with output section, and output section passes through Cycloidal Wheel
Central through hole, and epicycloidal wheel tooth is meshed with the hypocycloid gear teeth, and the first central axis for running through centre bore is passed through with second
The central axis for wearing centre bore is to be coaxially disposed.
Further, each crank axle is equipped with two gearratio of cycloid axle formation, relative to crank axle between two gearratio of cycloid axle formation
The eccentric direction of central axis is in 180 °.
Further, the quantity of multiple crank axles is two, and two crank axles are symmetrical relative to the central axis of Cycloidal Wheel
Set.
Further, the end of output section, which is equipped with, assembles end slot, in the end plugging in fitting end slot of input unit, and assembles
The first assembling bearing is equipped between the groove perisporium of end slot and the end outer wall of input unit.
Further, the hypocycloid planetary reduction gear of hollow needleless tooth further includes sealing baffle, and sealing baffle is arranged at
Two in centre bore, and the first assembling bearing is between input unit and sealing baffle.
Further, seal fitting is equipped between output section and retainer, the lateral wall of retainer, which is equipped with, to be used to install O
The sealing ring mounting groove of type sealing ring.
Further, retainer includes the first retainer and the second retainer, the first retainer and the sealing of the second retainer
Connection forms assembly space, and assembly connection is in assembly space between the gearratio of cycloid axle formation of crank axle, Cycloidal Wheel, output section three.
Further, be equipped with the first seal fitting between the first retainer and output section, the second retainer and output section it
Between be equipped with the second seal fitting, assembly connection part is located at first between the gearratio of cycloid axle formation of crank axle, Cycloidal Wheel, output section three
Between seal fitting, the second seal fitting and retainer.
Further, output section, which is equipped with, is used for the lubrication runner of lubricating oil of circulating, and lubricate the input port of runner with
Delivery outlet set pipe thread seal screw hole, by pipe thread seal screw sealed set in pipe thread seal screw hole with reality
Now seal.
The hypocycloid planetary reduction gear of the hollow needleless tooth can be good at making compact hollow structure, this mainly benefits
In Cycloidal Wheel the hypocycloid gear teeth and output section epicycloidal wheel tooth mesh form, pin tooth position is on the inside of the Cycloidal Wheel, and pin tooth
The center of the output section of distribution can be used for that hollow structure is made, i.e., second runs through centre bore.This hollow structure utilizes
The structural advantage engaged between the hypocycloid gear teeth of Cycloidal Wheel and the epicycloidal wheel tooth of output section, can make full use of space without
Increase the integrally-built complexity of retarder.And the hypocycloid planetary reduction gear of the hollow needleless tooth can be realized closely
Structure, reduce axial dimension, this to improve the rigidity of the part such as crank axle and the overall structure rigidity of retarder have it is important
Meaning.In addition, the innovation structure of the hypocycloid planetary reduction gear of the hollow needleless tooth can make full use of structural advantage, realize compared with
Big hollow ratio, hollow delivery effect are more preferable.The hypocycloid planetary reduction gear of the hollow needleless tooth does not have pin toothing, engagement
During sliding friction between the bulge-structure only on the inside of Cycloidal Wheel and the bulge-structure on the outside of output section, so as to reduce
Friction loss in transmission process, improves the transmission efficiency of retarder entirety.
Brief description of the drawings
, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing is briefly described needed in description, it should be apparent that, drawings in the following description are only that this practicality is new
Some embodiments of type, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the structure diagram of the crank axle of the hollow type hypocycloid planetary reduction gear of the utility model embodiment；
Fig. 2 is the section view perpendicular to axial direction of the hollow type hypocycloid planetary reduction gear of the utility model embodiment
Figure；
Fig. 3 is the hollow type hypocycloid planetary reduction gear of the utility model embodiment on the defeated of input unit and crank axle
Enter the structure diagram of the matching relationship between shaft end；
Fig. 4 is the structure diagram of the crank axle of the hollow type hypocycloid planetary reduction gear of the utility model embodiment；
Fig. 5 is the sectional view of the Cycloidal Wheel of the hypocycloid planetary reduction gear of the utility model embodiment；
Fig. 6 is the sectional view of the output section of the hypocycloid planetary reduction gear of the utility model embodiment；
Fig. 7 is the assembling structure schematic diagram of the hypocycloid planetary reduction gear of the utility model embodiment；
Fig. 8 is the dress of the view direction perpendicular to axial direction of the hypocycloid planetary reduction gear of the utility model embodiment
With schematic diagram.
Wherein, each reference numeral in figure：
10th, retainer；11st, the first retainer；12nd, the second retainer；20th, crank axle；21st, input shaft end；22nd, eccentric shaft
Section；30th, input unit；40th, Cycloidal Wheel；401st, central through hole；402nd, through hole is assembled；41st, the hypocycloid gear teeth；50th, output section；51、
Epicycloidal wheel tooth；61st, the first assembling bearing；62nd, the second assembling bearing；63rd, the 3rd assembling bearing；64th, the 4th assembling bearing；
65th, the 5th assembling bearing；66th, the 6th assembling bearing；67th, the 7th assembling bearing；811st, the first seal fitting；812nd, the second sealing
Accessory；82nd, sealing ring mounting groove；90th, planetary gear；31st, first runs through centre bore；52nd, second runs through centre bore；70th, seal
Baffle.
Embodiment
In order to which technical problem to be solved in the utility model, technical solution and beneficial effect is more clearly understood, with
Lower combination accompanying drawings and embodiments, are further elaborated the utility model.It is it should be appreciated that described herein specific real
Example is applied only to explain the utility model, is not used to limit the utility model.
It should be noted that when element is referred to as " being fixed on " or " being arranged at " another element, it can be directly another
On one element or it is connected on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
It is to be appreciated that term " length ", " width ", " on ", " under ", "front", "rear", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " top ", " bottom ", " interior ", " outer " are to be closed based on orientation shown in the drawings or position
System, is for only for ease of and describes the utility model and simplified description, rather than the device or element of instruction or hint meaning are necessary
With specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limitation to the utility model.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include one or more this feature.In the description of the utility model, " multiple " are meant that two or two
More than, unless otherwise specifically defined.
As shown in Figures 1 to 8, the hypocycloid planetary reduction gear of the hollow needleless tooth of the present embodiment includes retainer 10, defeated
Entering portion 30, Cycloidal Wheel 40, output section 50 and multiple crank axles 20, multiple crank axles 20 are installed in rotation on retainer 10,
Each crank axle 20 is equipped with input shaft end 21 and gearratio of cycloid axle formation 22, the gear teeth in input unit 30 and the gear teeth on input shaft end 21
It is meshed, input unit 30 is equipped with first penetrated through along the central axial direction of input unit 30 and runs through centre bore 31, Cycloidal Wheel 40
Central through hole 401 and multiple assembling through holes 402 are equipped with, multiple crank axles 20 are correspondingly through assembling through hole 402, and partially
Mandrel section 22 is assemblied at assembling through hole 402, and the hole wall of central through hole 401 is equipped with the hypocycloid gear teeth 41, and output section 50 can turn
It is installed on dynamicly on retainer 10, centre bore 52 is run through in output section 50 equipped with epicycloidal wheel tooth 51 and second, wherein, second passes through
The central axial direction for wearing centre bore 52 along output section 50 penetrates through setting, and the present embodiment is using outer pendulum as shown in Figure 5 and Figure 6
For the bulge-structure on the outer wall of output section 50, (bulge-structure is the epicycloid shape on the periphery wall of output section 50 to line wheel tooth 51
The gear teeth, the shape of the cross-sectional profiles of each raised gear teeth are for a distance between semi-circular shape, the two neighboring gear teeth
The width of one gear teeth), bulge-structure is integrally formed with output section 50, and output section 50 passes through the central through hole 401 of Cycloidal Wheel 40,
And epicycloidal wheel tooth 51 is meshed with the hypocycloid gear teeth 41, and first runs through through the central axis of centre bore 31 and second
The central axis in heart hole 52 be coaxially disposed (first through centre bore 31 central axis be input unit 30 central axis,
Second central axis for running through centre bore 52 is the central axis of output section 50).
Power is carried out transmission conveying by the hypocycloid planetary reduction gear during the work time, by input unit 30, and bent
Transmission is realized by gear teeth meshing between the input shaft end 21 and input unit 30 of arbor 20, herein the tooth number of input shaft end 21
More than the tooth number of input unit 30, i.e. gearratio between input unit 30 and crank axle 20 is less than 1, slows down so as to fulfill the first order
Transmission, crank axle 20 is around own axis so that the gearratio of cycloid axle formation 22 on crank axle 20, which rotates, drives Cycloidal Wheel 40 around output
The central axis in portion 50 revolves round the sun, during Cycloidal Wheel 40 is revolved round the sun, the hypocycloid gear teeth 41 in Cycloidal Wheel 40 with
Epicycloidal wheel tooth 51 on output section 50 realizes engagement, the interaction force between interior cycloidal gear teeth 41 and epicycloidal wheel tooth 51
Under the action of, Cycloidal Wheel 40 around own axes carry out with the opposite spinning motion in direction that revolves round the sun, and output section 50 also and meanwhile around
Own axes carry out the rotation rotation opposite with 40 sense of rotation of Cycloidal Wheel, and (retainer 10 is fixed setting, output section 50 at this time
As power output power part, below using retainer 10 as the supporting item of fixed setting in order to illustrate), in this way,
Second level deceleration transmission is realized to the transmission process of output section 50 by Cycloidal Wheel 40.Also, due to input unit 30 and output
First is respectively correspondingly provided with portion 50 and runs through centre bore 52 through centre bore 31, second, so as to run through center first
Hole 31 and second, which is run through in centre bore 52 to intert, lays control circuit or hydraulic oil control pipeline etc., is easy to use the planet
The mechanical equipment of retarder or the wires design of robot, are conducive to optimization design mechanical equipment or robot overall structure,
Further realize the Miniaturization Design of mechanical equipment or robot.By the hypocycloid gear teeth 41 and the output that design Cycloidal Wheel 40
Engagement assembling between the epicycloidal wheel tooth 51 in portion 50 so that the structure design of Cycloidal Wheel 40 realizes miniaturization, and by
Input unit 30, output section 50 set first to run through centre bore 52 through centre bore 31, second so that line related is laid or liquid
Optimization is further realized in the laying of pressure oil control pipeline, so as to be conducive to the integrally-built miniaturization layout of retarder, and is led to
Double reduction driven Design altogether is crossed, the gearratio between input unit 30 and output section 50 is further reduced, realizes input speed
The larger deceleration transmission with the difference of output speed, and the hypocycloid planetary reduction gear is relative to the gerotor type row of the prior art
For star retarder, its internal design structures is simplified, and reduces the degree of difficulty of processing technology.In order to further subtract
Loss in few power transmission process, is to be independently mounted at pin tooth by cylindrical needle tooth to pacify with epicycloidal wheel tooth of the prior art
The design form of the epicycloidal wheel tooth formed in tankage is compared, the epicycloidal wheel tooth 51 of the present embodiment and the one of output section 50 into
Type, no longer produces any relative motion friction between epicycloidal wheel tooth 51 and output section 50, be integrally formed design epicycloid
The gear teeth 51 are with the design form of output section 50, only existing the hypocycloid gear teeth 41 and outer pendulum between Cycloidal Wheel 40 and output section 50
The sliding friction loss that line wheel tooth 51 produces during being meshed, reduces sliding friction of the cylindrical needle tooth in pin tooth mounting groove
Loss, therefore further improve the efficiency of power transmission.
The utility model slows down by varying the shape of the bulge-structure in the outside of output section 50 to substitute traditional cycloid in planet
The pin toothing of device, improves the processing efficiency and transmission efficiency of retarder.The pin tooth of traditional cycloid planetary speed reducer and output
Pin tooth mounting groove in portion 50 is required for carrying out high-precision processing, and pin number of teeth amount is relatively more, and processing capacity is bigger.This practicality
The new bulge-structure by varying on output section 50 substitutes the pin toothing of traditional cycloid planetary speed reducer, and and cycloid
The hypocycloid gear teeth that the bulge-structure of wheel is formed are engaged, it is only necessary to carry out one to the hypocycloid gear teeth 41 of Cycloidal Wheel 40
Molding high accuracy processing and the epicycloidal wheel tooth 51 to output section 50 carry out integrally formed high accuracy and process, and subtract
Few quantity and difficulty for needing high accuracy processing part, reduces manufacture cost.In the hypocycloid planetary reduction gear of the hollow needleless tooth
Manufacture, assembling process in the manufacture of device and assembling process all there is no pin tooth, can reduce retarder manufacture and assembling process
Difficulty, use manpower and material resources sparingly, improve efficiency.Both there are between Cycloidal Wheel and pin tooth in engagement process for traditional pin toothing
Rolling friction, there is also the sliding friction between pin tooth and pin tooth mounting groove, the hypocycloid planetary reduction gear of the hollow needleless tooth
Device does not have pin toothing, only has in engagement process between the bulge-structure on the inside of Cycloidal Wheel and the bulge-structure on the outside of output section
Sliding friction, so as to reduce the friction loss in transmission process, improves the transmission efficiency of retarder entirety, and relative to existing
Having reduces for the cycloid planetary speed reducer of technology in transmission process because the vibration noise that pin tooth is swung and produces.
The quantity of multiple crank axles 20 in the present embodiment is even number, and relative to pendulum between even number crank axle 20
The central axis of line wheel 40 is symmetrical arranged, and each crank axle 20 is equipped with two gearratio of cycloid axle formation 22, and in same crank axle
On 20, between two gearratio of cycloid axle formation 22 relative to crank axle 20 central axis eccentric direction be in 180 °, as shown in Figure 4.Phase
Ying Di, the quantity of the Cycloidal Wheel 40 being fitted in gearratio of cycloid axle formation 22 are two, are revolved round the sun in Cycloidal Wheel 40, the process of rotation
In, due to being in 180 ° between the eccentric direction of two gearratio of cycloid axle formation 22 on each crank axle 20, then two Cycloidal Wheels 40 revolve round the sun
When be that to be in constantly relative to the central axis of output section 50 be in 180 ° of beats, this makes it possible to the epicyclodial wheel for making output section 50
The active force from the hypocycloid gear teeth 41 suffered by tooth 51 mutually balances, it becomes possible to keeps output section 50 to export the stabilization of power
Property.Specifically, in the present embodiment, the quantity of multiple crank axles 20 is two, and two crank axles 20 are relative to Cycloidal Wheel 40
Central axis is symmetrical arranged.
As shown in Figure 1, seal operation is carried out in order to realize the hypocycloid planetary reduction gear from the unilateral of output section 50, from
And compared with the prior art in need from input side and outlet side both sides be carried out at the same time seal operation for simplify the hypocycloid
The Seal Design structure of planetary reduction gear, therefore, is equipped with seal fitting between output section 50 and retainer 10, retainer 10 it is outer
Side wall is equipped with the sealing ring mounting groove 82 for mounting O-shaped sealing ring, is installed by the hypocycloid planetary reduction gear to corresponding
Mechanical frock system or robot arm in carry out deceleration transmission, at this time by sealing ring mounting groove 82 mounting O-shaped it is close
Seal and the exterior mounting shell body of exterior the installation housing or robot arm of mechanical frock system form sealing assembling, so that right
Sealed set of the hypocycloid planetary reduction gear on input extreme direction.Pass through O-shaped sealing causing the lateral wall of retainer 10
While sealing assembling being formed between circle and exterior installation housing, in order to make output section 50 obtain more stable support,
Remain stable during output is rotated, therefore, the end of output section 50 is equipped with assembling end slot, the end of input unit 30
In portion's plugging in fitting end slot, and assemble and the first assembling bearing is equipped between the groove perisporium of end slot and the end outer wall of input unit 30
61, and the hypocycloid planetary reduction gear of the hollow needleless tooth further includes sealing baffle 70, and sealing baffle 70 is arranged at second and passes through
Wear in centre bore 52, and the first assembling bearing 61 is between input unit 30 and sealing baffle 70.Pass through the resistance of sealing baffle 70
Gear, then can stop that greasing substance (such as lubrication has or lubricating grease) is leaked from second through centre bore 52, and assemble
The sealing baffle 70 of completion is formed with O-ring seal to be coordinated, so as to can complete to grasp the sealing for inputting side in assembling process
Make, in use, seal operation need to be only carried out to outlet side can be to the hypocycloid planetary reduction gear of whole hollow needleless tooth
Device realizes effective seal operation.Therefore, output section 50 is equipped with the lubrication runner for the lubricating oil that circulates, and lubricates runner
Input port and delivery outlet pipe thread seal screw hole is set, by pipe thread seal screw (not shown) sealed set in pipe spiral shell
Sealed in line sealing screw hole with realizing.Further, retainer 10 includes the first retainer 11 and the second retainer 12, and first
11 and second retainer 12 of retainer, which is tightly connected, forms assembly space, the gearratio of cycloid axle formation 22 of crank axle 20, Cycloidal Wheel 40, output
Assembly connection is equipped with the first sealing in assembly space, also, between the first retainer 11 and output section 50 between 50 three of portion
Accessory 811, is equipped with the second seal fitting 812, the gearratio of cycloid axle formation 22 of crank axle 20, pendulum between the second retainer 12 and output section 50
Assembly connection part is located at the first seal fitting 811, the second seal fitting 812 and keeps between line wheel 40,50 three of output section
Between frame 10.Therefore, for single hypocycloid planetary reduction gear, pipe thread seal screw, the first seal fitting 811 are utilized
Internal cycloid planetary speed reducer, which is formd, with the second seal fitting 812 carries out sealing assembly manipulation, this implementation from output terminal one side
Hypocycloid planetary reduction gear must be from input terminal and defeated relative to the planetary reduction gear of single epicycloid form in the prior art
For outlet both direction carries out sealing assembly manipulation, which simplifies the sealing assembling of single retarder
The form of operation so that the easy assembly work of the internal cycloid planetary speed reducer of staff, i.e. the second retainer 12 with it is defeated
Go out portion 50 by the 3rd assembling 63 joint transmission of bearing, and pass through the second seal fitting 812, crank axle 20 and Cycloidal Wheel 40
In the inner side of 50 and second retainer of output section 12, output side direction single-side sealing is realized.The hypocycloid planet of the hollow needleless tooth
Retarder can realize that outlet side carries out single-side sealing, it is not necessary to increase seal structural part outside outlet side and (increase in input side
Add and sealed between O-ring seal and exterior installation housing) so that export structure can be more various, using will more
Extensively.
As shown in Figure 1, the end of output section 50 is not only coordinated on the end of input unit 30 by the first assembling bearing 61,
And the outer wall of the end of output section 50 is provided with the second assembling bearing 62, which is fixedly mounted on the first guarantor
Hold on frame 11, in addition, being equipped with the 3rd assembling bearing 63 between 50 and second retainer 12 of output section, such output section 50 passes through the
One assembling bearing 61, second assembles the cooperation that bearing 62 and the 3rd is assembled between 63 three of bearing and supports so that output section 50 exists
Rotational motion can remain stable during transmitting output power, and ensure that hypocycloid planetary reduction gear entirety
Concentricity and rigidity.In two crank axles 20 of the present embodiment, first crank axle 20 passes through the 4th assembling bearing 64 and the 5th
Assemble bearing 65 to be installed on retainer 10, second crank axle 20 assembles bearing 67 by the 6th assembling bearing 66 and the 7th pacifies
On retainer 10.
In the present embodiment, the axial wall of the gearratio of cycloid axle formation 22 of each crank axle 20 and the assembling through hole 402 of Cycloidal Wheel 40
Spring bearing is equipped between hole wall so that smooth-going is relatively rotated between gearratio of cycloid axle formation 22 and the assembling through hole 402 of Cycloidal Wheel 40.
Certainly, hydrostatic bearing can also be used to carry out between the hole wall of the axial wall of gearratio of cycloid axle formation 22 and the assembling through hole 402 of Cycloidal Wheel 40
Associated lubrication supports, so as to reduce the abrasion between the axial wall of gearratio of cycloid axle formation 22 and the hole wall of assembling through hole 402.
The gear teeth on the input shaft end 21 of crank axle 20 could be provided as directly setting on the end of crank axle 20 and gradually open
The gear teeth of wire type, as shown in figure 4, the evolvent type gear teeth corresponding with input unit 30 are meshed, and are realized in transmission process
The first order is slowed down；Alternatively, as shown in Fig. 3, Fig. 7 and Fig. 8, planetary gear 90, planetary gear are assembled on the end of crank axle 20
Be engaged between 90 and the end of crank axle 20 by spline with corresponding spline, by the gear teeth on planetary gear 90 with it is defeated
The gear teeth for entering portion 30 are meshed and realize the first order and slow down.
Alternatively, it is also possible to which output section 50 is fixed installation to be supported as the fixed of the hypocycloid planetary reduction gear
Point, at this time, from 30 input power of input unit, the gear teeth of the gear teeth of the power Jing Guo input unit 30 and the input shaft end 21 of crank axle 20
Transmission realizes that the first order is slowed down, and then drives retainer 10 to rotate in the revolution by Cycloidal Wheel 40, rotation and realizes the second level
Slow down, retainer 10 is used as power output part at this time, compared with by the use of output section 50 as power output part, utilizes holding
Output rotation direction when frame 10 is as power output part is opposite with the output rotation direction of output section 50.
In terms of comprehensive, the hypocycloid planetary reduction gear that the technical program provides has the following advantages：
1st, the hypocycloid planetary reduction gear is improved traditional Cycloidal Wheel and the external toothing form of pin tooth by structure innovation
For internal messing form.The innovation of this internal messing form and structure is so that the epicycloidal wheel tooth 51 of output section 50 is located at Cycloidal Wheel 40
Inner side be meshed with the hypocycloid gear teeth 41, and cause Cycloidal Wheel 40 internal structure be simplified, so as to simplify hypocycloid
The global design processing of planetary reduction gear.
2nd, the hypocycloid planetary reduction gear is diminished the axial dimension of crank axle 20, rigidity increase is interior by structure innovation
The overall stiffness of cycloid planetary speed reducer and service life are also improved.Meanwhile the axial dimension of hypocycloid planetary reduction gear reduces
So that the structure of the hypocycloid planetary reduction gear is compacter.
3rd, the hypocycloid planetary reduction gear 20 end point of crank axle in traditional structure is coupled by structure innovation the 4th
Assembling bearing the 64, the 5th assembles bearing 65 (the 6th assembling bearing 66 and the 7th assembles bearing 67) and is built in retainer 10, and
And output section 50 is positioned on the outside of bearing hole (outside in the axial direction), 50 and second retainer 12 of output section passes through bearing
Couple with oil sealing, effective output side seal is realized in the sealing of oil sealing.
4th, the output section 50 of hypocycloid planetary reduction gear design, and matching somebody with somebody between 50 and second retainer 12 of output section
Close to realize the sealing of outlet side.For input side, the sealing installation of the O-ring seal of radial direction is provided with the first retainer 11
Groove, sealing is realized by the cooperation with exterior input structure.For outlet side, lubrication flow is devised on output section 50
Road, passes through the lubricating oil injection and discharge for lubricating the oilhole of runner to realize to the hypocycloid planetary reduction gear.And pass through pipe
Thread seal screw seals.It is not required external structure to can be carried out sealing so that export structure more diversity.
5th, the hypocycloid planetary reduction gear in addition to the advantages described above, also has：It is compact-sized, retarder overall stiffness
It is good, service life length；Theoretical research shows that the output of the hypocycloid planetary reduction gear is more stablized；The hypocycloid of Cycloidal Wheel 40
41 structure of the gear teeth is without complicated internal structure so that Cycloidal Wheel is more readily processed.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (9)
- A kind of 1. hypocycloid planetary reduction gear of hollow needleless tooth, it is characterised in that including：Retainer (10)；Multiple crank axles (20), multiple crank axles (20) are installed in rotation on the retainer (10), each described Crank axle (20) is equipped with input shaft end (21) and gearratio of cycloid axle formation (22)；Input unit (30), the gear teeth on the input unit (30) are meshed with the gear teeth on the input shaft end (21), described defeated Enter portion (30) and run through centre bore (31) equipped with first；Cycloidal Wheel (40), the Cycloidal Wheel (40) are equipped with central through hole and multiple assembling through holes, multiple crank axles (20) The assembling through hole is passed through correspondingly, and the gearratio of cycloid axle formation (22) is assemblied in the assembling through hole, the center leads to The hole wall in hole is equipped with the hypocycloid gear teeth (41)；Output section (50), the output section (50) are rotatably installed on the retainer (10), on the output section (50) Run through centre bore (52) equipped with epicycloidal wheel tooth (51) and second, the epicycloidal wheel tooth (51) is the outer of the output section (50) Bulge-structure on wall, the bulge-structure are integrally formed with the output section (50), and the output section (50) passes through the pendulum The central through hole (401) of line wheel (40), and the epicycloidal wheel tooth (51) is meshed with the hypocycloid gear teeth (41), and institute It is to be coaxially disposed that first, which is stated, through the central axis of centre bore (31) and the described second central axis for running through centre bore (52).
- 2. the hypocycloid planetary reduction gear of hollow needleless tooth as claimed in claim 1, it is characterised in that each crank axle (20) two gearratio of cycloid axle formation (22) are equipped with, relative to the crank axle (20) between two gearratio of cycloid axle formation (22) The eccentric direction of central axis is in 180 °.
- 3. the hypocycloid planetary reduction gear of hollow needleless tooth as claimed in claim 2, it is characterised in that multiple crank axles (20) quantity is two, and two crank axles (20) are symmetrical arranged relative to the central axis of the Cycloidal Wheel (40).
- 4. the hypocycloid planetary reduction gear of hollow needleless tooth as claimed in claim 1, it is characterised in that the output section (50) End be equipped with assembling end slot, in the end insertion assembling end slot of the input unit (30), and the assembling end slot The first assembling bearing (61) is equipped between groove perisporium and the end outer wall of the input unit.
- 5. the hypocycloid planetary reduction gear of hollow needleless tooth as claimed in claim 4, it is characterised in that the hollow needleless tooth Hypocycloid planetary reduction gear further include sealing baffle (70), the sealing baffle (70) is arranged at described second and runs through centre bore (52) in, and the first assembling bearing (61) is between the input unit (30) and the sealing baffle (70).
- 6. the hypocycloid planetary reduction gear of hollow needleless tooth as claimed in claim 5, it is characterised in that the output section (50) Seal fitting (81) is equipped between the retainer (10), the lateral wall of the retainer (10), which is equipped with, is used for mounting O-shaped The sealing ring mounting groove (82) of sealing ring.
- 7. the hypocycloid planetary reduction gear of hollow needleless tooth as claimed in claim 6, it is characterised in that the retainer (10) Including the first retainer (11) and the second retainer (12), first retainer (11) and second retainer (12) sealing Connection forms assembly space, the gearratio of cycloid axle formation (22) of the crank axle (20), the Cycloidal Wheel (40), the output section (50) three Assembly connection is in the assembly space between person.
- 8. the hypocycloid planetary reduction gear of hollow needleless tooth as claimed in claim 7, it is characterised in that first retainer (11) the first seal fitting (811), second retainer (12) and the output section are equipped between the output section (50) (50) the second seal fitting (812), the gearratio of cycloid axle formation (22) of the crank axle (20), the Cycloidal Wheel (40), institute are equipped between Assembly connection part is located at first seal fitting (811), second seal fitting between stating output section (50) three (812) between the retainer (10).
- 9. the hypocycloid planetary reduction gear of hollow needleless tooth as claimed in claim 1, it is characterised in that the output section (50) The lubrication runner for the lubricating oil that circulates is equipped with, and the input port of the lubrication runner sets pipe thread seal with delivery outlet Screw hole, by pipe thread seal screw sealed set in the pipe thread seal screw hole with realize sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721311144.4U CN207297757U (en) | 2017-10-10 | 2017-10-10 | A kind of hypocycloid planetary reduction gear of hollow needleless tooth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721311144.4U CN207297757U (en) | 2017-10-10 | 2017-10-10 | A kind of hypocycloid planetary reduction gear of hollow needleless tooth |
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| Publication Number | Publication Date |
|---|---|
| CN207297757U true CN207297757U (en) | 2018-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721311144.4U Withdrawn - After Issue CN207297757U (en) | 2017-10-10 | 2017-10-10 | A kind of hypocycloid planetary reduction gear of hollow needleless tooth |
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|---|---|
| CN (1) | CN207297757U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654586A (en) * | 2017-10-10 | 2018-02-02 | 深圳先进技术研究院 | Hollow type hypocycloid planetary reduction gear |
| CN107676433A (en) * | 2017-10-10 | 2018-02-09 | 深圳先进技术研究院 | A kind of hypocycloid planetary reduction gear of hollow needleless tooth |
-
2017
- 2017-10-10 CN CN201721311144.4U patent/CN207297757U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654586A (en) * | 2017-10-10 | 2018-02-02 | 深圳先进技术研究院 | Hollow type hypocycloid planetary reduction gear |
| CN107676433A (en) * | 2017-10-10 | 2018-02-09 | 深圳先进技术研究院 | A kind of hypocycloid planetary reduction gear of hollow needleless tooth |
| CN107676433B (en) * | 2017-10-10 | 2019-10-08 | 深圳先进技术研究院 | A kind of hypocycloid planetary reduction gear of hollow needleless tooth |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180501 Effective date of abandoning: 20191008 |