CN201802825U - Planet gear mechanism and mechanism transmission comprising same - Google Patents
Planet gear mechanism and mechanism transmission comprising same Download PDFInfo
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- CN201802825U CN201802825U CN2010201127990U CN201020112799U CN201802825U CN 201802825 U CN201802825 U CN 201802825U CN 2010201127990 U CN2010201127990 U CN 2010201127990U CN 201020112799 U CN201020112799 U CN 201020112799U CN 201802825 U CN201802825 U CN 201802825U
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- sun gear
- output
- assembly
- gear assembly
- planet carrier
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Abstract
The utility model relates to a planet gear mechanism comprising an input sun gear assembly (1), at least one planet gear assembly (2), a planet carrier assembly (4) and an output sun gear assembly (3), wherein the rotation axis of the input sun gear assembly, the rotation axes of the planet carrier assemblies and the rotation axis of the output sun gear assembly are coincide with one another, any two of the input sun gear assembly, the planet carrier assemblies and the output sun gear assembly can rotate with respect to each other, the planet carrier assemblies and/or the output sun gear assembly can be fixed, either the planet carrier assemblies or the output sun gear assembly can be fixed, any two of the input sun gear assembly, the planet carrier assemblies and the output sun gear assembly can be locked by each other, either locking or fixing can be carried out, planet gear assemblies can be installed on the planet carrier assemblies in a manner that the planet gear assemblies can rotate around the axes thereof, each planet gear assembly comprises two planet gears (21 and 22), the two planet gears are connected together through a shaft so as to rotate coaxially and synchronously, one planet gear is meshed with an input sun gear, and the other planet gear is meshed with an output sun gear. The utility model further relates to a transmission comprising the planet gear mechanism.
Description
Technical field
The utility model relates to a kind of planetary gears and a kind of mechanical transmission that comprises this planetary gears, relates in particular to a kind of gear-shift transmission that is applied on the vehicle.
Background technique
In the practical application, gear-shift transmission has two types: fixed shaft type and planetary gear type.
Be illustrated in figure 1 as a kind of fixed shaft type gear-shift transmission schematic representation, this speed changer has the gear shaft of three fixed-site: first (input shaft) Z
1, second spool (output shaft) Z
2With jack shaft Z
3, first Z
1With second Z
2Layout spaced apart vertically, spin axis overlap and can relatively rotate jack shaft Z
3With first Z
1And second Z
2Be arranged in parallel.First Z
1On 1 gear a is housed
1, both rotate synchronously; Second Z
2On 3 gear b are housed
2, c
2, d
2, these three gears are nested with at second Z
2On, and can be with respect to second Z
2Freely rotate; Jack shaft Z
3On 4 gear a are arranged
3, b
3, c
3, d
3, these four gears and the 3rd Z
3Rotation synchronously; Countershaft-gear a
3With the first shaftgear a
1Engagement, countershaft-gear b
3, c
3, d
3Respectively with the second shaftgear b
2, c
2, d
2Engagement; Second Z
2On 2 clutch collar j are housed
1, j
2, clutch collar j
1Be arranged in gear a
1And b
2Between, clutch collar j
2Be arranged in gear c
2And d
2Between, these two clutch collars can be realized gear a
1, b
2, c
2, d
2Respectively with second Z
2Engage and with second Z
2Rotation synchronously, thus first, second and third retaining of realizing speed changer reaches directly retaining.The characteristics of this speed changer are: simple in structure, cost is low; But if the gear sum (forward gear+reverse gear) of the speed changer of this structure surpasses six, then shift control mechanism is arranged relatively difficulty, and the longitudinal size of whole speed changer significantly increases; In addition, the speed changer of this structure will separate the clutch before first when gearshift, therefore cause the interruption of transmission of power inevitably.
Shown in Fig. 2 c, be a kind of planetary transmission schematic representation, this speed changer is made of three planet rows, and each planet package is drawn together: sun gear P
1, planet wheel P
2, gear ring P
3With planet carrier P
4(shown in Fig. 2 a, 2b), three planet rows combine, by three clutch C
1, C
2, C
3And three clamping strap B
1, B
2, B
3, add the cooperation of overrunning clutch F, can be with each planet row's sun gear P
1, gear ring P
3With planet carrier P
4As driving link, Passive part or fixed block, so just can be combined into a plurality of gears respectively.Often have fluid torque converter to be used before this type speed changer, need not to cut off engine power can shift gears, but transmission efficiency is low; The interconnecting of the associated component that planet row's of this type planetary transmission associated component and another one planet are arranged, nested, thereby cause whole speed changer structure very complicated, difficult arrangement, bring great difficulty for manufacturing and maintenance, especially the processing of gear ring can't be adopted the processing method of gear hobbing, therefore the efficient of processing is low, and the low precision cost is higher.
The model utility content
The purpose of this utility model is, a kind of novel planetary gears is provided, it has cancelled the gear ring in traditional planetary gear mechanism, also avoided the nested of complexity between planet row and the planet row associated component, eliminated the labyrinth of planetary gears associated component and the shortcoming of processing difficulties thus, and can provide three kinds of velocity ratios at most by a planetary gears.The utility model also provides a kind of mechanical transmission that comprises this planetary gears.
By planetary gears of the present utility model, comprise input sun gear assembly, at least one planet wheel assembly, planet carrier assembly and output sun gear assembly, described input sun gear assembly, planet carrier assembly and output sun gear assembly have the spin axis of coincidence and appoint and can relatively rotate between the two, described planet carrier assembly and/or output sun gear assembly can be fixed and described planet carrier assembly and output sun gear assembly can only be selected a ground and be fixed, and described input sun gear assembly, appoint both to be locked to each other in planet carrier assembly and the output sun gear assembly, said locking and fixing can only select a ground and carry out, wherein, described planet wheel assembly is rotatably mounted on the described planet carrier assembly around its axis, each described planet wheel assembly comprises two planet wheels, these two planet wheels link together with coaxial and synchronous rotation by axle, and planet wheel in described two planet wheels is meshed with the input sun gear of input sun gear assembly and another planet wheel is meshed with the output sun gear of exporting the sun gear assembly, described input sun gear assembly constitutes the input end of planetary gears, and described output sun gear assembly or planet carrier assembly constitute the output terminal of planetary gears.
Preferred implementation according to planetary gears of the present utility model, described planetary gears comprises the output sun gear arrestment mechanism that is used for the planet carrier arrestment mechanism that planet carrier assembly is braked and/or is used for output sun gear assembly is braked, with fixed carrier assembly or output sun gear assembly.
Preferred implementation according to planetary gears of the present utility model, described planetary gears comprises lockable mechanism, this lockable mechanism is installed on appointing of described input sun gear assembly, described output sun gear assembly and described planet carrier assembly and is used between the two the two is locked mutually, with realize blocked both rotate synchronously.
Preferred implementation according to planetary gears of the present utility model, the central shaft of described input sun gear assembly is as the input end of planetary gears, the central shaft of described output sun gear assembly or planet carrier assembly with the output terminal of the concentric planet carrier output shaft of output sun gear assembly central shaft as planetary gears.
According to the preferred implementation of planetary gears of the present utility model, described planet carrier arrestment mechanism and output sun gear arrestment mechanism and lockable mechanism can only be selected a ground and work.
Preferred implementation according to planetary gears of the present utility model, described planet carrier assembly comprises planet carrier and brake drum, described planet carrier and described brake drum have a center hole respectively and are fixed together formation one hollow structure, the sun gear of the sun gear of described input sun gear assembly, described planet wheel assembly and described output sun gear assembly is contained in this hollow structure, and the central shaft of the central shaft of described input sun gear assembly and described output sun gear assembly is protruding from the respective central holes of planet carrier and brake drum respectively.
According to the preferred implementation of planetary gears of the present utility model, described planet carrier assembly comprises planet carrier and brake drum, and described planet carrier and described brake drum are fixed together and form a hollow structure; The sun gear of described input sun gear assembly and described planet wheel assembly are contained in this hollow structure; Described brake drum has a center hole, and the central shaft of described input sun gear assembly is protruding from the center hole of described brake drum; The central part of described planet carrier is to the direction depression of described brake drum, and the mediad at the depression position stretches out the planet carrier output shaft of planet carrier assembly away from the direction of described brake drum; Described output sun gear assembly has another center hole, make the central shaft of described output sun gear assembly rotatably be placed on the described planet carrier output shaft, and the sun gear of described output sun gear assembly is contained in the depression position of described planet carrier; Have radial direction through hole on the circumference at described planet carrier depression position, the planet wheel of sun gear engagement described planet wheel assembly and described output sun gear assembly meshes by the sun gear of a described radial direction through hole and described output sun gear assembly respectively.This structure helps installing arrestment mechanism additional on the exposed parts of described output sun gear assembly.
According to the preferred implementation of planetary gears of the present utility model, described planet carrier arrestment mechanism and/or described output sun gear arrestment mechanism adopt the form of clamping strap or clutch.
By mechanical transmission of the present utility model, comprise housing and one or more above-mentioned planetary gears, the planet carrier assembly of described planetary gears and/or output sun gear assembly can be fixed with respect to the housing of speed changer; Comprise that at mechanical transmission under the situation of a planetary gears only, the input end of this planetary gears constitutes the input end of speed changer, the output terminal of this planetary gears constitutes the output terminal of speed changer; Perhaps, comprise at mechanical transmission under the situation of a plurality of planetary gears, these planetary gears are one another in series, wherein the input end of first order planetary gears constitutes the input end of speed changer, the output terminal of afterbody planetary gears constitutes the output terminal of speed changer, and the output terminal of previous stage planetary gears links to each other with the input end of the back primary planet pinion mechanism that is right after.
Preferred implementation by mechanical transmission of the present utility model, described speed changer comprises planetary gear mechanisms for two stages, wherein, the planet carrier assembly of first order planetary gears can be fixed with respect to the housing of speed changer, output sun gear assembly and its planet carrier assembly of first order planetary gears can be locked mutually, and the central shaft of the output sun gear assembly of first order planetary gears constitutes the output terminal of first order planetary gears; The planet carrier assembly of second level planetary gears or output sun gear assembly can be fixed with respect to the housing of speed changer, output sun gear assembly and its planet carrier assembly of second level planetary gears can be locked mutually, the central shaft of the input sun gear assembly of second level planetary gears links to each other with the central shaft of the output sun gear assembly of first order planetary gears, and the central shaft of the output sun gear assembly of second level planetary gears and the planet carrier output shaft of its planet carrier assembly constitute two output terminals of second level planetary gears, and these two output terminals link to each other with the output shaft assembly of speed changer by output translator.
Preferred implementation by mechanical transmission of the present utility model, described speed changer comprises three planetary gears, wherein, the planet carrier assembly of first order planetary gears can be fixed with respect to the housing of speed changer, output sun gear assembly and its planet carrier assembly of first order planetary gears can be locked mutually, and the central shaft of the output sun gear assembly of first order planetary gears constitutes the output terminal of first order planetary gears; The planet carrier assembly of middle planetary gears can be fixed with respect to the housing of speed changer, output sun gear assembly and its planet carrier assembly of middle planetary gears can be locked mutually, the central shaft of the input sun gear assembly of middle planetary gears links to each other with the central shaft of the output sun gear assembly of first order planetary gears, and the central shaft of the output sun gear assembly of middle planetary gears constitutes the output terminal of middle planetary gears; And, the planet carrier assembly of afterbody planetary gears or output sun gear assembly can be fixed with respect to the housing of speed changer, output sun gear assembly and its planet carrier assembly of afterbody planetary gears can be locked mutually, the central shaft of the input sun gear assembly of afterbody planetary gears links to each other with the central shaft of the output sun gear assembly of the planetary gears of centre, and the central shaft of the output sun gear assembly of afterbody planetary gears and the planet carrier output shaft of planet carrier assembly constitute two output terminals of afterbody planetary gears, and these two output terminals link to each other with the output shaft assembly of speed changer by output translator.
According to mechanical transmission preferred implementation of the present utility model, in the end be provided with the output conversion clutch between the output shaft assembly of primary planet pinion mechanism and described speed changer as output translator, described output conversion clutch comprises active part and secondary part, the active part of described output conversion clutch is divided into two parts: first active part and second active part, described first active part is connected with the central shaft of the output sun gear assembly of afterbody planetary gears and rotation synchronously, and second active part is connected with the planet carrier output shaft of afterbody planetary gears and rotation synchronously; The secondary part of described output conversion clutch is divided into two parts: first secondary part and second secondary part, but described first secondary part and described first active part form the friction pair of carry-over moment, but described second secondary part and described second active part form the friction pair of carry-over moment, and described first secondary part all is connected with described transmission output shaft assembly with described second secondary part and rotation synchronously.
According to mechanical transmission preferred implementation of the present utility model, output translator comprises a planet carrier output spline that in the end is provided with on the planet carrier output shaft of primary planet pinion mechanism, a sun gear output spline and the clutch collar that can slide vertically that in the end is provided with on the central shaft of the output sun gear assembly of primary planet pinion mechanism, the two ends of described clutch collar endoporus are respectively equipped with first spline and second spline, first spline of described clutch collar can be exported spline engagement with described sun gear, also can export spline engagement, but can not mesh simultaneously with described sun gear output spline and described planet carrier output spline with described planet carrier; Spline on second spline of described clutch collar and the output shaft assembly of speed changer is in engagement all the time.
As a kind of preferred embodiment of the utility model mechanical transmission, it comprises the described planetary gears of two-stage or the above series connection of two-stage; The dimensional parameters of these described planetary gears can be identical, also can be different; In the at different levels described planetary gears of series connection, the central shaft of described input sun gear assembly is as the input part, and the central shaft of described output sun gear assembly is as output; The output of the described planetary gears of previous stage links to each other with the input part of the described planetary gears of back one-level.
In described planetary gears of the present utility model, the central shaft assembly of not only described output sun gear can be used as output, and the output shaft of described planet carrier also can be used as output, and this afterbody for the described planetary gears of series connection is particularly important.For the planetary gears that has described planet carrier arrestment mechanism and described output sun gear arrestment mechanism simultaneously, described planet carrier arrestment mechanism and the alternation of described output sun gear arrestment mechanism, the central shaft of described output sun gear assembly and the output shaft of described planet carrier will can make the planetary gears performance more function of the type so alternately as output.When the central shaft with described output sun gear assembly is reducing gear (an input sun gear central shaft rotating speed/output sun gear central shaft rotating speed=i＞1) as output terminal and described planetary mechanism, the described planetary mechanism that then satisfies such condition can reach: (meanwhile described output sun gear arrestment mechanism is inoperative when described planet carrier arrestment mechanism works, and described lockable mechanism is inoperative), described planet carrier assembly does not have rotation with respect to described housing, and this moment, power was outwards just transferred out by the central shaft of described output sun gear assembly; (meanwhile described planet carrier arrestment mechanism is inoperative when described output sun gear arrestment mechanism works, and described lockable mechanism is inoperative), described output sun gear assembly does not have rotation with respect to described housing, and this moment, power was by the output of outwards reversing of the output shaft of described planet carrier.
Export in order to cooperate just transferring out of described output sun gear assembly with the counter-rotating of described planet carrier output shaft, two kinds of operating modes are all outwards exported by described transmission output shaft assembly, can be in the following way: between the output shaft assembly of described planetary gears and described speed changer, be provided with the output conversion clutch, described output conversion clutch comprises active part and secondary part, the active part of described output conversion clutch is divided into two parts: first active part and second active part, described first active part is connected with the central shaft of described output sun gear assembly and rotation synchronously, and second active part is connected with the output shaft of described planet carrier and rotation synchronously; The secondary part of described output conversion clutch is divided into two parts: first secondary part and second secondary part, but described first secondary part and described first active part form the friction pair of carry-over moment, but described second secondary part and described second active part form the friction pair of carry-over moment, and described first secondary part all is connected with the output shaft assembly of described speed changer with described second secondary part and rotation synchronously.Like this, power is if outwards exported by described output sun gear assembly, and first active part and first secondary part of then exporting conversion clutch engage, and power is delivered to described transmission output shaft assembly from described output sun gear assembly; Power is if outwards exported by described planet carrier output shaft, and second active part and second secondary part of then exporting conversion clutch engage, and power is delivered to described transmission output shaft assembly from described planet carrier output shaft.
Export in order to cooperate just transferring out of described output sun gear assembly with the counter-rotating of described planet carrier output shaft, two kinds of operating modes are all outwards exported by described transmission output shaft assembly, can also be in the following way, that is: on the output shaft of described planet carrier assembly, be provided with spline, be called planet carrier output spline, on the central shaft of described output sun gear assembly, be provided with spline, be called sun gear output spline, other has a clutch collar to slide vertically, the two ends of described clutch collar endoporus are respectively equipped with spline, the spline of described clutch collar one end can be exported spline engagement with described sun gear, also can export spline engagement with described planet carrier, but can not mesh simultaneously with described sun gear output spline and described planet carrier output spline, the spline on the spline of the described clutch collar the other end and the transmission output shaft assembly is in engagement all the time.Like this,, still outwards export, all can outwards export by the output shaft assembly of described clutch collar and described speed changer by the output shaft of described planet carrier no matter power is outwards exported by the central shaft of described output sun gear assembly.
Be installed on described input sun gear assembly, described output sun gear assembly and described planet carrier assembly to appoint described lockable mechanism between the two can be overrunning clutch, also can be ordinary clutch, six kinds of situations specifically describe as follows respectively:
One, the described lockable mechanism that is installed between described output sun gear assembly and the described planet carrier assembly is an overrunning clutch, described overrunning clutch comprises inner ring and outer ring, described inner ring links to each other with described output sun gear assembly, and described outer ring links to each other with described planet carrier assembly; At this moment, described output sun gear assembly is speed increasing mechanism (an input sun gear central shaft rotating speed/output sun gear central shaft rotating speed=i＜1) as output terminal and described planetary gears, described output sun gear assembly can only rotate to the direction that described input sun gear assembly rotates with respect to described planet carrier assembly, if rotate in the opposite direction, then overrunning clutch enters lockup state, and the described output sun gear assembly and the described planet carrier assembly that are in lockup state rotate synchronously.
Two, the described lockable mechanism that is installed between described input sun gear assembly and the described planet carrier assembly is an overrunning clutch, described overrunning clutch comprises inner ring and outer ring, described inner ring links to each other with described input sun gear assembly, and described outer ring links to each other with described planet carrier assembly; At this moment, described output sun gear assembly is speed increasing mechanism (an input sun gear central shaft rotating speed/output sun gear central shaft rotating speed=i＜1) as output terminal and described planetary gears, described input sun gear assembly can only rotate to the direction that described input sun gear assembly rotates with respect to described planet carrier assembly, if rotate in the opposite direction, then overrunning clutch enters lockup state, and the described input sun gear assembly and the described planet carrier assembly that are in lockup state rotate synchronously.
Three, the described lockable mechanism that is installed between described input sun gear assembly and the described output sun gear assembly is an overrunning clutch, described overrunning clutch comprises inner ring and outer ring, described inner ring and described outer ring link to each other with described input sun gear assembly one of among both, and another links to each other with described output sun gear assembly among both for described inner ring and described outer ring; At this moment, described output sun gear assembly is speed increasing mechanism (an input sun gear central shaft rotating speed/output sun gear central shaft rotating speed=i＜1) as output terminal and described planetary gears, described output sun gear assembly can only rotate to the direction that described input sun gear assembly rotates with respect to described input sun gear assembly, if rotate in the opposite direction, then overrunning clutch enters lockup state, and the described input sun gear assembly and the described output sun gear assembly that are in lockup state rotate synchronously.
Four, the described lockable mechanism that is installed between described output sun gear assembly and the described planet carrier assembly is an ordinary clutch, described ordinary clutch comprises two-part: active part and secondary part, described active part is connected with described planet carrier assembly, and described secondary part is connected with described output sun gear assembly.When the active part of described ordinary clutch and secondary part were in separated state, described output sun gear assembly can forward rotation with respect to described planet carrier assembly, also can backward rotation; Behind the active part and secondary part joint of described ordinary clutch, described output sun gear assembly and described planet carrier assembly rotate synchronously, thus whole planetary gears unitary rotation.
Five, the described lockable mechanism that is installed between described input sun gear assembly and the described planet carrier assembly is an ordinary clutch, described ordinary clutch comprises two-part: active part and secondary part, described active part is connected with described input sun gear assembly, and described secondary part is connected with described planet carrier assembly.When the active part of described ordinary clutch and secondary part were in separated state, described input sun gear assembly can forward rotation with respect to described planet carrier assembly, also can backward rotation; Behind the active part and secondary part joint of described ordinary clutch, described input sun gear assembly and described planet carrier assembly rotate synchronously, thus whole planetary gears unitary rotation.
Six, the described lockable mechanism that is installed between described input sun gear assembly and the described output sun gear assembly is an ordinary clutch, described ordinary clutch comprises two-part: active part and secondary part, described active part is connected with described input sun gear assembly, and described secondary part is connected with described output sun gear assembly.When the active part of described ordinary clutch and secondary part were in separated state, described input sun gear assembly can forward rotation with respect to described output sun gear assembly, also can backward rotation; Behind the active part and secondary part joint of described ordinary clutch, described input sun gear assembly and described output sun gear assembly rotate synchronously, thus whole planetary gears unitary rotation.
When described planet carrier arrestment mechanism works, meanwhile, described output sun gear arrestment mechanism and described lockable mechanism are inoperative, do not have between described planet carrier assembly and the described housing and relatively rotate, this moment, power was by described input sun gear assembly → described planet wheel assembly → described output sun gear assembly, and the velocity ratio of entire mechanism is an i (input sun gear central shaft rotating speed/output sun gear central shaft rotating speed=i); When described output sun gear arrestment mechanism and planet carrier arrestment mechanism are inoperative, meanwhile, described lockable mechanism works, and the part that links to each other with described lockable mechanism can realize synchronous rotation, thereby entire mechanism will be done as a whole rotation, and the velocity ratio of entire mechanism is 1; Because every grade of described planetary gears has two positive drive than i and 1, if 2 grades of described planetary gears series connection are arranged, then total forward gear figure place is: 2 * 2=4 retaining, if 3 grades of described planetary gears series connection are arranged, then total forward gear figure place is: 2 * 2 * 2=8 retaining, if 4 grades of described planetary gears series connection are arranged, the forward gear figure place will increase considerably the retaining into: 2 * 2 * 2 * 2=16, therefore, if the described planetary gears series connection of n level is arranged, then total forward gear figure place is: 2
n
In general, for negative velocity ratio (promptly reversing gear), only need such as afterbody, adopt the planetary gears that comprises output sun gear arrestment mechanism in certain one-level in the planetary gears at different levels of series connection, the maximum quantity of the forward gear of speed changer is 2 like this
n, the maximum quantity that reverses gear all is 2
N-1Certainly, though the speed changer that is in series such as 3 grades of planetary gears can provide 8 forward gear figure places, 4 gear number that fall back, but can not adopt some gears wherein in the specific implementation as required, for example according to circumstances need not adopt the 8th forward gear, then the forward gear that can access is 7, reverse gear is 4, therefore can access total gear number is 11, wherein, for such as sedan car, reversing gear only needs 1, and therefore total practical gear number is 8 (7 forward gears and 1 reverse gear); And, then can adopt a plurality of reversing gear in fact as required for such as mining machinery.
In sum, planetary gears of the present utility model is compared to the planetary gears of other speed changers, and its main feature is:
One, whole described planetary gears is not provided with gear ring, and the described planetary gears of every suit is provided with two sun gears, at least one planet wheel assembly, planet carrier, and two planet wheels of described planet wheel assembly are meshed with one of them sun gear respectively;
Two,, can realize that two positive drive are than i (input sun gear central shaft rotating speed/output sun gear central shaft rotating speed=i) with 1 for each described planetary gears that described planet carrier arrestment mechanism and described lockable mechanism are housed; By arrestment mechanism and the locking framework of handling planetary gears simply, be implemented between velocity ratio i and 1 and shift gears;
Three, if multistage described planetary gears is connected, Placement each other is fairly simple, and the output of the described planetary gears of previous stage links to each other with the input part of the described planetary gears of back one-level; Therefore series multistage planetary gears and realize the speed changers of many retainings simply, and arrestment mechanism and locking framework by handling planetary gears at different levels simply are implemented between many retainings and shift gears.
Four, for the planetary gears that has described planet carrier arrestment mechanism and described output sun gear arrestment mechanism simultaneously,
1) works at the planet carrier arrestment mechanism and export simultaneously under sun gear arrestment mechanism and the inoperative situation of lockable mechanism, the central shaft of described output sun gear assembly is as output terminal at this moment, can realize that described output sun gear assembly outwards just transfers out, promptly, (rotating speed/output sun gear central shaft rotating speed=i), this is equivalent to a kind of gear-shift transmission of fixed shaft type to input sun gear central shaft to positive drive than i; Planetary gears is a reducing gear when i＞1, and i＜1 o'clock planetary gears is a speed increasing mechanism;
2) work at lockable mechanism and export simultaneously under sun gear arrestment mechanism and the inoperative situation of planet carrier arrestment mechanism, the central shaft of described output sun gear assembly is as output terminal at this moment, can realize that described output sun gear assembly outwards just transfers out, promptly, positive drive is than 1 (input sun gear central shaft rotating speed=output sun gear central shaft rotating speed), and planetary gears is a constant speed unit;
3) under output sun gear arrestment mechanism works while lockable mechanism and the inoperative situation of planet carrier arrestment mechanism, the central shaft of described planet carrier assembly is as output terminal at this moment, the rotating ratio of realizing is: input sun gear assembly central shaft rotating speed/planet carrier assembly output shaft rotating speed=1-i, here i is the 1st) i when the planet carrier gear mechanism is the fixed shaft type gear-shift transmission in the kind situation, promptly, when i＞1 (the fixed shaft type planetary gears is a reducing gear), can realize the output of outwards reversing of described planet carrier output shaft, promptly reverse gear; When i＜1 (the fixed shaft type planetary gears is a speed increasing mechanism), can realize that described planet carrier output shaft outwards just transfers out.
Mechanical transmission according to the utility model provides has following advantage with respect to prior art:
Since cancelled gear ring and since planetary gears serial fashion of the present utility model simple, bring great convenience for the processing and the layout of planetary gears, thereby make that speed changer structure of the present utility model is simple, cost is low, is easy to realize more gear by the series multistage planetary gears; In addition, the mechanical transmission operating mechanism that the utility model provides is simple, can realize in the shift process that power does not interrupt.
Description of drawings
Embodiment below in conjunction with accompanying drawing provides is described in further detail feature and advantage of the present utility model.Wherein:
Fig. 1 is a kind of fixed shaft type speed changer structure schematic representation;
Fig. 2 a, 2b are a kind of basic structure schematic representation of planetary gears;
Fig. 2 c is a kind of structural representation of traditional planetary gears speed changer;
Fig. 3 a is a kind of embodiment's of the utility model mechanical transmission a basic structure schematic representation;
Fig. 3 b, 3c show and the similar embodiment of Fig. 3 a;
The another kind of embodiment's of Fig. 4 a the utility model mechanical transmission basic structure schematic representation;
Fig. 4 b, 4c show and the similar embodiment of Fig. 4 a;
Fig. 5 is the embodiment's of the mechanical transmission that comprises two planetary mechanisms of the present utility model basic structure schematic representation;
Fig. 6 is a kind of embodiment's of the mechanical transmission that comprises three planetary mechanisms of the present utility model basic structure schematic representation; And
Fig. 7 is the another kind of embodiment's of the mechanical transmission that comprises three planetary mechanisms of the present utility model basic structure schematic representation;
Embodiment
Fig. 3 a illustrates a kind of embodiment's of mechanical transmission of the present utility model basic structure schematic representation, it comprises planetary gears A, housing C, also comprise between the associated component that can realize described planetary gears A and the described housing C and do not have arrestment mechanism in relative rotation, being used to of promptly installing between described planet carrier assembly 4 and described housing C realizes not having arrestment mechanism in relative rotation between described planet carrier assembly 4 and the housing, is called planet carrier arrestment mechanism B
CDescribed planetary gears A comprises input sun gear assembly 1, output sun gear assembly 3, two planet wheel assembly 2, planet carrier assembly 4 and lockable mechanisms 5 that are provided with around input sun gear assembly 1 and output sun gear assembly 3., the planet wheel assembly 2 of three or other quantity (such as one or four) also can be set here, these planet wheel assemblies 2 preferably distribute equably around the circumference of input sun gear assembly 1 and output sun gear assembly 3.The spin axis of described input sun gear assembly 1, described planet carrier assembly 4 and described output sun gear assembly 3 overlaps and appoints and can relatively rotate between the two.Described planet wheel assembly 2 comprises planet wheel 21 and planet wheel 22, and these two planet wheels link together with coaxial, synchronous rotation by axle, and described planet wheel assembly 2 is rotatably mounted on the described planet carrier assembly 4 around its axis.The sun gear 11 of described input sun gear assembly 1 and 21 engagements of a planet wheel of described planet wheel assembly 2, the sun gear 31 of described output sun gear assembly 3 meshes with another planet wheel 22 of described planet wheel assembly 2.Described lockable mechanism 5 is installed between described output sun gear assembly 3 and the described planet carrier assembly 4 and is used for the two is locked mutually, to realize both synchronous rotations.In the embodiment shown in Fig. 3 a, the central shaft 12 of input sun gear 11 constitutes input end, and the central shaft 32 of output sun gear 31 constitutes output terminal.When with described output sun gear assembly 3 as when output, if described planetary gears A is a speed increasing mechanism, then whole planetary gears has two positive drive than i and 1, so-called positive drive is more identical with the sense of rotation of input end than the sense of rotation of expression output terminal; Therewith accordingly, negative velocity ratio represents that the sense of rotation of output terminal is opposite with the sense of rotation of input end.
Shown in Fig. 3 a, the described lockable mechanism 5 that is installed between described output sun gear assembly 3 and the described planet carrier assembly 4 is overrunning clutch 5a, and described overrunning clutch 5a comprises inner ring 5a
1With outer ring 5a
2, described inner ring 5a
1Link to each other described outer ring 5a with described output sun gear assembly 3
2Link to each other with described planet carrier assembly 4; Described output sun gear assembly 3 can only rotate to the direction that input sun gear assembly rotates with respect to described planet carrier assembly 4, if rotate round about, then overrunning clutch enters lockup state, the described output sun gear assembly 3 that is in lockup state rotates synchronously with described planet carrier assembly 4, thus whole described planetary gears A unitary rotation.
Shown in Fig. 3 a, described planet carrier assembly 4 comprises planet carrier 41 and brake drum 42, both central authorities are equipped with a hole, described planet carrier 41 and described brake drum 42 are fixed together and form a hollow structure, the sun gear 31 of the sun gear 11 of described input sun gear assembly 1, described planet wheel assembly 2 and described output sun gear assembly 3 is contained in this hollow structure, and the central shaft 32 of the central shaft 12 of described input sun gear assembly 1 and described output sun gear assembly 3 is protruding from the respective aperture of described brake drum 42 and described planet carrier 41 central authorities respectively.
The embodiment of embodiment shown in Fig. 3 b and Fig. 3 a is similar, when with described output sun gear assembly 3 as when output, described planetary gears A also is a speed increasing mechanism, difference mainly is, lockable mechanism 5 is arranged between input sun gear assembly 1 and the planet carrier assembly 4, makes input sun gear assembly 1 can be locked to each other with planet carrier assembly 4.Certainly, it also is admissible being arranged on lockable mechanism 5 between input sun gear assembly 1 and the output sun gear assembly 3, as shown in Fig. 3 c, makes input sun gear assembly 1 and output sun gear assembly 3 to be locked to each other.
Fig. 4 a illustrates the another kind of embodiment's of mechanical transmission of the present utility model basic structure schematic representation, it comprises planetary gears A, housing C, also comprise between the associated component that can realize described planetary gears A and the described housing C and do not have arrestment mechanism in relative rotation, being used to of promptly installing between described planet carrier assembly 4 and described housing C realizes not having arrestment mechanism in relative rotation between described planet carrier assembly 4 and the housing, is called planet carrier arrestment mechanism B
C, and/or install between described output sun gear assembly 3 and the described housing C be used to realize not having arrestment mechanism in relative rotation between described output sun gear assembly 3 and the housing, be called output sun gear arrestment mechanism B
SDescribed planetary gears A comprises input sun gear assembly 1, output sun gear assembly 3, a plurality of around importing planet wheel assembly 2, planet carrier assembly 4 and the lockable mechanism 5 that sun gear assembly 1 and output sun gear assembly 3 are provided with.The spin axis of described input sun gear assembly 1, described planet carrier assembly 4 and described output sun gear assembly 3 overlaps and appoints and can relatively rotate between the two.Described planet wheel assembly 2 comprises that planet wheel 21 and planet wheel 22, two planet wheels link together with coaxial, synchronous rotation by axle, and described planet wheel assembly 2 is rotatably mounted on the described planet carrier assembly 4 around its axis.The sun gear 11 of described input sun gear assembly 1 and 21 engagements of a planet wheel of described planet wheel assembly 2, the sun gear 31 of described output sun gear assembly 3 meshes with another planet wheel 22 of described planet wheel assembly 2.Described lockable mechanism 5 is installed between described output sun gear assembly 3 and the described planet carrier assembly 4 and is used for the two is locked mutually, to realize both synchronous rotations.
Shown in Fig. 4 a, the described lockable mechanism 5 that is installed between described output sun gear assembly 3 and the described planet carrier assembly 4 is ordinary clutch 5b, and described ordinary clutch 5b comprises two-part: active part 5b
1With secondary part 5b
2, described active part 5b
1Be connected described secondary part 5b with described planet carrier assembly 4
2Be connected with described output sun gear assembly 3.Active part 5b as described ordinary clutch 5b
1With secondary part 5b
2When being in separated state, described output sun gear assembly 3 can forward rotation with respect to described planet carrier assembly 4, also can backward rotation; Active part 5b as described ordinary clutch 5b
1With secondary part 5b
2Behind the joint, described output sun gear assembly 3 rotates synchronously with described planet carrier assembly 4, thus whole described planetary gears A unitary rotation.
Shown in Fig. 4 a, described planet carrier assembly 4 comprises planet carrier 41 and brake drum 42, and both are fixed together and form a hollow structure; The sun gear 11 of described input sun gear assembly 1 and described planet wheel assembly 2 are contained in this hollow structure.Be provided with a hole in described brake drum 42 central authorities, the central shaft 12 of described input sun gear assembly 1 is protruding from the hole of described brake drum 42 central authorities.The central part of described planet carrier 41 is to the direction depression of described brake drum 42, and the mediad at the depression position stretches out an output shaft away from the direction of described brake drum 42, is called planet carrier output shaft 43.Described output sun gear assembly 3 central authorities are provided with a hole, by this hole, the central shaft 32 of described output sun gear assembly 3 rotatably is placed on the described planet carrier output shaft 43, and the sun gear 31 of described output sun gear assembly 3 is contained in the depression position of described planet carrier 41; Have some radial direction through hole on the circumference at described planet carrier 41 depression positions, the planet wheel 22 of described planet wheel assembly 2 meshes by the sun gear 31 of a radial direction through hole and described output sun gear assembly 3 respectively.Said structure helps installing arrestment mechanism additional on the exposed parts of described output sun gear assembly 3.
Shown in Fig. 4 a, when with described output sun gear assembly 3 as when output, if described planetary gears A is a reducing gear, then whole described planetary gears A has two positive drive than i and 1 according to different situations, and a counter-rotating velocity ratio i
RAs described planet carrier arrestment mechanism B
C(meanwhile, described lockable mechanism 5 and output sun gear arrestment mechanism B when working
SInoperative), not have between described planet carrier assembly 4 and the described housing C and relatively rotate, this moment, the bang path of power was: described input sun gear assembly 1 → described planet wheel assembly 2 → described output sun gear assembly 3, the velocity ratio of entire mechanism is i; (described planet carrier arrestment mechanism B meanwhile, when described lockable mechanism 5 works
CWith output sun gear arrestment mechanism B
SInoperative), the described output sun gear assembly 3 and the described planet carrier assembly 4 that are attached thereto rotate synchronously, thus whole described planetary gears A will do as a whole rotation, and the velocity ratio of entire mechanism is 1; As output sun gear arrestment mechanism B
SWork, meanwhile, described planet carrier arrestment mechanism B
CWith lockable mechanism 5 when inoperative, by planet carrier output shaft 43 with negative velocity ratio i
RRealize output.
Shown in Fig. 4 a, when with described output sun gear assembly 3 as when output, if described planetary gears A is a speed increasing mechanism, then whole described planetary gears A has three positive drive according to different situations and compares i
1, i
2With 1.As described planet carrier arrestment mechanism B
C(meanwhile, described lockable mechanism 5 and output sun gear arrestment mechanism B when working
SInoperative), not have between described planet carrier assembly 4 and the described housing C and relatively rotate, this moment, the bang path of power was: described input sun gear assembly 1 → described planet wheel assembly 2 → described output sun gear assembly 3, the velocity ratio of entire mechanism is i
1As output sun gear arrestment mechanism B
SWork, meanwhile, described planet carrier arrestment mechanism B
CWith lockable mechanism 5 when inoperative, by planet carrier output shaft 43 with velocity ratio i
2Realize output; (described planet carrier arrestment mechanism B meanwhile, when described lockable mechanism 5 works
CWith output sun gear arrestment mechanism B
SInoperative), the described output sun gear assembly 3 and the described planet carrier assembly 4 that are attached thereto rotate synchronously, thus whole described planetary gears A will do as a whole rotation, and the velocity ratio of entire mechanism is 1.
Fig. 4 b shows and the similar embodiment of Fig. 4 a that difference is that mainly lockable mechanism 5 is arranged between input sun gear assembly 1 and the planet carrier assembly 4, makes that input sun gear assembly 1 can be locked to each other with planet carrier assembly 4.Certainly, it also is admissible being arranged on lockable mechanism 5 between input sun gear assembly 1 and the output sun gear assembly 3, as shown in Fig. 4 c, makes that input sun gear assembly 1 and output sun gear assembly 3 can be locked to each other.At this, have the dual output end according to the planetary gears A of the embodiment shown in Fig. 4 a, the 4b, promptly export the central shaft 32 and the planet carrier output shaft 43 of sun gear assembly.
Self-evident, the ordinary clutch in the embodiment of Fig. 4 a, 4b, 4c also can be applicable among the embodiment shown in Fig. 3 a, 3b, the 3c, and vice versa.
As shown in Figure 5, described speed changer comprises two planetary gears A
1, A
2, wherein, with the central shaft of described output sun gear as output terminal, first order planetary gears A
1Be speed increasing mechanism, adopt the planetary gears of Fig. 3 a shown type.By planet carrier arrestment mechanism Bc, described planet carrier assembly 4 can be fixed with respect to the housing C of speed changer.Overrunning clutch 5a is installed, so that the two can be locked mutually between the output sun gear assembly 3 of first order planetary gears and its planet carrier assembly 4.The central shaft of the output sun gear assembly of first order planetary gears constitutes the output terminal of first order planetary gears;
With the central shaft of described output sun gear as output terminal, second level planetary gears A
2Be reducing gear, adopt the planetary gears of Fig. 4 a shown type.By planet carrier arrestment mechanism Bc or output sun gear arrestment mechanism Bs, second level planetary gears A
2 Planet carrier assembly 4 or output sun gear assembly 3 can be fixed with respect to the housing C of speed changer.Second level planetary gears A
2Output sun gear assembly 3 and its planet carrier assembly 4 between adopt ordinary clutch 5b so that the two can be locked mutually.Second level planetary gears A
2The central shaft and the first order planetary gears A of input sun gear assembly
1The central shaft of output sun gear assembly link to each other and second level planetary gears A
2The central shaft of output sun gear assembly and the planet carrier output shaft of planet carrier assembly constitute second level planetary gears A
2Two output terminals, and these two output terminals link to each other with the output shaft assembly 8 of speed changer by output translator.
As shown in Figure 6 and Figure 7, described mechanical transmission comprises the described planetary gears A of three grades of series connection, is called planetary gears A from front to back
1, planetary gears A
2, planetary gears A
3, the dimensional parameters of three described planetary gears A, velocity ratio etc. can be different, also can be identical.
In the embodiment shown in Fig. 6 and 7, planetary gears A
1And A
2Corresponding to the embodiment of Fig. 3 a, and planetary gears A
3Embodiment corresponding to Fig. 4 a.Self-evident, other compound mode of different planetary gears also is admissible.With described output sun gear assembly as output, described planetary gears A
1And A
2Be speed increasing mechanism, its lockable mechanism is overrunning clutch 5a; With described output sun gear assembly as output, described planetary gears A
3Be reducing gear, its lockable mechanism is ordinary clutch 5b; In the at different levels described planetary gears A of series connection, the central shaft 12 of described input sun gear assembly 1 is the input part, and the central shaft 32 of described output sun gear assembly 3 is an output; The output of the described planetary gears A of previous stage links to each other with the input part of the described planetary gears A of back one-level.Because every grade of described planetary gears A has two positive drive than i and 1, therefore the forward gear figure place of three grades of described planetary gears series connection is: 2 * 2 * 2=8 retaining.
In the present embodiment, for the described planetary gears A of afterbody that connects
3, the central shaft 32 of not only described output sun gear assembly 3 can be used as output, and the output shaft 43 of described planet carrier also can be used as output, for example is used for constituting reversing gear (as shown in Figure 6 and Figure 7).For having described planet carrier arrestment mechanism B simultaneously
CWith described output sun gear arrestment mechanism B
SDescribed planetary gears A
3, described planet carrier arrestment mechanism B
CWith described output sun gear arrestment mechanism B
SSelect a ground job, so that the output shaft 43 of the central shaft of described output sun gear assembly 3 and described planet carrier is respectively as output, can make the planetary gears performance more function of the type like this, can reach by rational design: as described planet carrier arrestment mechanism B
C(meanwhile described output sun gear arrestment mechanism B when working
SInoperative with lockable mechanism 5), described planet carrier assembly 4 does not have rotation with respect to described housing C, and this moment, power was outwards just transferred out by the central shaft of described output sun gear assembly 3, provided positive drive to compare i; As described output sun gear arrestment mechanism B
S(meanwhile described planet carrier arrestment mechanism B when working
CInoperative with lockable mechanism 5), described output sun gear assembly 3 does not have rotation with respect to described housing C, and this moment, power was outwards exported by the output shaft 43 of described planet carrier, and velocity ratio i is provided
R(i
R=1-i, wherein, when i＜1, velocity ratio i
RFor on the occasion of, power is outwards just transferred out by the output shaft 43 of described planet carrier; And when i＞1, velocity ratio i
RBe negative value, formation is reversed gear, and power is by the outwards counter-rotating output of output shaft 43 of described planet carrier); (meanwhile described planet carrier arrestment mechanism B when described lockable mechanism 5 works
CWith output sun gear arrestment mechanism B
SInoperative), whole planetary gears rotates together, provides positive drive than 1.
For the central shaft 32 that cooperates described output sun gear assembly 3 just transfer out with the output shaft 43 of described planet carrier just or counter-rotating output, two kinds of operating modes are all outwards exported by described transmission output shaft assembly 8, can adopt mode as shown in Figure 6: at described planetary gears A
3And be provided with the output translator that constitutes output conversion clutch 7 between the described transmission output shaft assembly 8, described output conversion clutch 7 comprises active part 7a and secondary part 7b, and the active part 7a of described output conversion clutch 7 is divided into two parts: the first active part 7a
1With the second active part 7a
2, the described first active part 7a
1Be connected and rotation synchronously the second active part 7a with the central shaft 32 of described output sun gear assembly 3
2Be connected and rotation synchronously with the output shaft 43 of described planet carrier; The secondary part 7b of described output conversion clutch 7 also is divided into two parts: the first secondary part 7b
1With the second secondary part 7b
2, the described first secondary part 7b
1With the described first active part 7a
1But form the friction pair of carry-over moment, the described second secondary part 7b
2With the described second active part 7a
2But form the friction pair of carry-over moment, the described first secondary part 7b
1With the described second secondary part 7b
2All be connected and rotation synchronously with described transmission output shaft assembly 8.Like this, power is then exported the first active part 7a of conversion clutch 7 if outwards exported by described output sun gear assembly 3
1With the first secondary part 7b
1Engage, power is delivered to described transmission output shaft assembly 8 from described output sun gear assembly 3; Power is then exported the second active part 7a of conversion clutch if outwards exported by described planet carrier output shaft 43
2With the second secondary part 7b
2Engage, power is delivered to described transmission output shaft assembly 8 from described planet carrier output shaft 43.
Also can adopt mode as shown in Figure 7: for the central shaft 32 that cooperates described output sun gear assembly 3 just transfer out with the output shaft 43 of described planet carrier just or counter-rotating output, two kinds of operating modes are all outwards exported by described transmission output shaft assembly 8, can also be in the following way in the present embodiment: at described planetary gears A
3In, on described planet carrier output shaft 43, be provided with spline, be called planet carrier output spline 44, on the central shaft 32 of described output sun gear assembly 3, be provided with spline, be called sun gear output spline 33, other has a clutch collar 6 to slide vertically, the two ends of described clutch collar 6 endoporus are respectively equipped with spline 61 and spline 62, the spline 61 of described clutch collar one end can mesh with described sun gear output spline 33, also can mesh with described planet carrier output spline 44, but can not mesh simultaneously with described sun gear output spline 33 and described planet carrier output spline 44, the other end spline 62 of described clutch collar 6 is in engagement all the time with the spline 81 on the transmission output shaft assembly 8, and clutch collar 6 constitutes output translator with each spline of mating reaction.Like this, no matter power is outwards just transferred out by the central shaft of described output sun gear assembly 3, still by the output shaft 43 of described planet carrier outwards just or counter-rotating output, all can outwards export with described transmission output shaft assembly 8 by described clutch collar 6.
In the embodiment shown in Fig. 5,6,7, have the planetary gears A of dual output end (central shaft 32 of sun gear assembly and planet carrier output shaft 43)
nBe arranged on afterbody.Self-evident, this planetary gears that has the dual output end also can be arranged on the first order or the second level, and this moment, output translator should be formed between this planetary gears and the next stage planetary gears.In addition, a plurality of combinations that have the planetary gears of dual output end also are admissible, and this allows to provide more gear, are the positive drive ratio because negative velocity ratio multiplies each other with negative velocity ratio.
Claims (15)
1. planetary gears, it is characterized in that, described planetary gears comprises input sun gear assembly (1), at least one planet wheel assembly (2), planet carrier assembly (4) and output sun gear assembly (3), described input sun gear assembly (1), planet carrier assembly (4) and output sun gear assembly (3) have the spin axis of coincidence and appoint and can relatively rotate between the two, described planet carrier assembly (4) and/or output sun gear assembly (3) can be fixed and described planet carrier assembly (4) and export sun gear assembly (3) and can only select a ground and be fixed, and described input sun gear assembly (1), appoint both to be locked to each other in planet carrier assembly (4) and output sun gear assembly (3), said locking and fixing can only select a ground and carry out, wherein, described planet wheel assembly (2) is rotatably mounted on the described planet carrier assembly (4) around its axis, each described planet wheel assembly comprises two planet wheels (21,22), these two planet wheels link together with coaxial and synchronous rotation by axle, and the planet wheel (21) in described two planet wheels is meshed with the input sun gear (11) of input sun gear assembly (1) and another planet wheel (22) is meshed with the output sun gear (31) of exporting sun gear assembly (3), described input sun gear assembly (1) constitutes the input end of planetary gears, and described output sun gear assembly (3) or planet carrier assembly (4) constitute the output terminal of planetary gears.
2. planetary gears according to claim 1 is characterized in that, described planetary gears comprises and is used for planet carrier arrestment mechanism (B that planet carrier assembly (4) is braked
C) and/or be used for exporting the output sun gear arrestment mechanism (B that sun gear assembly (3) is braked
S), with fixed carrier assembly (4) or output sun gear assembly (3).
3. planetary gears according to claim 2, it is characterized in that, described planetary gears comprises lockable mechanism (5), this lockable mechanism (5) is installed on appointing of described input sun gear assembly (1), described output sun gear assembly (3) and described planet carrier assembly (4) and is used between the two the two is locked mutually, with realize blocked both rotate synchronously.
4. planetary gears according to claim 1, it is characterized in that, the central shaft (12) of described input sun gear assembly (1) is as the input end of planetary gears, the central shaft (32) of described output sun gear assembly (3) or planet carrier assembly (4) with the output terminal of the concentric planet carrier output shaft (43) of output sun gear assembly (3) central shaft (32) as planetary gears.
5. planetary gears according to claim 3 is characterized in that, described planet carrier arrestment mechanism (B
C) and output sun gear arrestment mechanism (B
S) and lockable mechanism (5) can only select a ground and work.
6. planetary gears according to claim 3, it is characterized in that: described lockable mechanism (5) is for being installed on the overrunning clutch (5a) between described output sun gear assembly (3) and the described planet carrier assembly (4), described overrunning clutch (5a) comprises inner ring (5a1) and outer ring (5a2), described inner ring (5a1) links to each other with described output sun gear assembly (3), and described outer ring (5a2) links to each other with described planet carrier assembly (4); Described output sun gear assembly (3) can only rotate to the direction that described input sun gear assembly (1) rotates with respect to described planet carrier assembly (4), when rotating round about, overrunning clutch (5a) enters lockup state, is in the described output sun gear assembly (3) and described planet carrier assembly (4) rotation synchronously of lockup state; Perhaps,
Described lockable mechanism (5) is for being installed on the overrunning clutch (5a) between described input sun gear assembly (1) and the described planet carrier assembly (4), and described overrunning clutch (5a) comprises inner ring (5a
1) and outer ring (5a
2), described inner ring (5a
1) link to each other described outer ring (5a with described input sun gear assembly (1)
2) link to each other with described planet carrier assembly (4); Described input sun gear assembly (1) can only rotate to the direction that described input sun gear assembly (1) rotates with respect to described planet carrier assembly (4), when rotating round about, overrunning clutch (5a) enters lockup state, is in the described input sun gear assembly (1) and described planet carrier assembly (4) rotation synchronously of lockup state; Perhaps,
Described lockable mechanism (5) is for being installed on the overrunning clutch (5a) between described input sun gear assembly (1) and the described output sun gear assembly (3), and described overrunning clutch (5a) comprises inner ring (5a
1) and outer ring (5a
2), described inner ring (5a
1) link to each other described outer ring (5a with described input sun gear assembly (1)
2) link to each other with described output sun gear assembly (3); Described output sun gear assembly (3) can only rotate to the direction that described input sun gear assembly (1) rotates with respect to described input sun gear assembly (1), when rotating round about, overrunning clutch (5a) enters lockup state, be in the described input sun gear assembly (1) and described output sun gear assembly (3) rotation synchronously of lockup state, and
Adopt at described lockable mechanism (5) under the situation of overrunning clutch form, described planetary gears can only be with described output sun gear assembly (3) as output terminal and be designed to speed increasing mechanism.
7. planetary gears according to claim 3, it is characterized in that: described lockable mechanism (5) is for being installed on the ordinary clutch (5b) between described output sun gear assembly (3) and the described planet carrier assembly (4), and described ordinary clutch (5b) comprises two-part: active part (5b
1) and secondary part (5b
2), described active part (5b
1) be connected described secondary part (5b with described planet carrier assembly (4)
2) be connected with described output sun gear assembly (3); Perhaps,
Described lockable mechanism (5) is for being installed on the ordinary clutch (5b) between described input sun gear assembly (1) and the described planet carrier assembly (4), and described ordinary clutch (5b) comprises two-part: active part (5b
1) and secondary part (5b
2), described active part (5b
1) be connected described secondary part (5b with described input sun gear assembly (1)
2) be connected with described planet carrier assembly (4); Perhaps,
Described lockable mechanism (5) is for being installed on the ordinary clutch (5b) between described output sun gear assembly (3) and the described input sun gear assembly (1), and described ordinary clutch (5b) comprises two-part: active part (5b
1) and secondary part (5b
2), described active part (5b
1) be connected described secondary part (5b with described input sun gear assembly (1)
2) be connected with described output sun gear assembly (3).
8. according to each described planetary gears in the claim 1 to 7, it is characterized in that, described planet carrier assembly (4) comprises planet carrier (41) and brake drum (42), described planet carrier (41) and described brake drum (42) have a center hole respectively and are fixed together formation one hollow structure, the sun gear (11) of described input sun gear assembly, the sun gear (31) of described planet wheel assembly (2) and described output sun gear assembly is contained in this hollow structure, and the central shaft (12) of described input sun gear assembly (1) and the central shaft (32) of described output sun gear assembly (3) are protruding from the respective central holes of planet carrier and brake drum respectively.
9. according to each described planetary gears in the claim 1 to 7, it is characterized in that, described planet carrier assembly (4) comprises planet carrier (41) and brake drum (42), and described planet carrier (41) and described brake drum (42) are fixed together and form a hollow structure; The sun gear (11) and the described planet wheel assembly (2) of described input sun gear assembly (1) are contained in this hollow structure; Described brake drum (42) has a center hole, and the central shaft (12) of described input sun gear assembly (1) is protruding from the center hole of described brake drum (42); The central part of described planet carrier (41) is to the direction depression of described brake drum (42), and the mediad at the depression position stretches out the planet carrier output shaft (43) of planet carrier assembly away from the direction of described brake drum (42); Described output sun gear assembly (3) has another center hole, make the central shaft (32) of described output sun gear assembly (3) rotatably be placed on the described planet carrier output shaft (43), and the sun gear (31) of described output sun gear assembly (3) is contained in the depression position of described planet carrier (41); Have radial direction through hole on the circumference at described planet carrier (41) depression position, the planet wheel (22) of sun gear (31) engagement described planet wheel assembly (2) and described output sun gear assembly meshes by the sun gear (31) of a described radial direction through hole and described output sun gear assembly respectively.
10. according to each described planetary gears in the claim 1 to 7, it is characterized in that described planet carrier arrestment mechanism (B
C) and/or described output sun gear arrestment mechanism (B
S) adopt the form of clamping strap or clutch.
11. mechanical transmission comprises that housing (C) and one or more are according to each described planetary gears (A in the claim 1 to 10; A
1, A
2..., A
n), planet carrier assembly of described planetary gears (4) and/or output sun gear assembly (3) can be fixed with respect to the housing (C) of speed changer;
Comprise that at mechanical transmission under the situation of a planetary gears only, the input end of this planetary gears constitutes the input end of speed changer, the output terminal of this planetary gears constitutes the output terminal of speed changer; Perhaps, comprise that at mechanical transmission under the situation of a plurality of planetary gears, these planetary gears are one another in series, wherein first order planetary gears (A
1) input end constitute the input end of speed changer, afterbody planetary gears (A
n) output terminal constitute the output terminal of speed changer, the output terminal of previous stage planetary gears links to each other with the input end of the back primary planet pinion mechanism that is right after.
12. mechanical transmission according to claim 11 is characterized in that: described speed changer comprises planetary gear mechanisms for two stages (A
1, A
2), wherein,
First order planetary gears (A
1) planet carrier assembly (4) can be fixed with respect to the housing (C) of speed changer, the output sun gear assembly (3) of first order planetary gears can be locked mutually with its planet carrier assembly (4), and the central shaft of the output sun gear assembly of first order planetary gears constitutes the output terminal of first order planetary gears;
Second level planetary gears (A
2) planet carrier assembly (4) or output sun gear assembly (3) can be fixed with respect to the housing (C) of speed changer, the output sun gear assembly (3) of second level planetary gears can be locked second level planetary gears (A mutually with its planet carrier assembly (4)
2) the central shaft and the first order planetary gears (A of input sun gear assembly
1) the central shaft of output sun gear assembly link to each other, and the central shaft of the output sun gear assembly of second level planetary gears and the planet carrier output shaft of its planet carrier assembly constitute two output terminals of second level planetary gears, and these two output terminals link to each other with the output shaft assembly (8) of speed changer by output translator.
13. mechanical transmission according to claim 11 is characterized in that: described speed changer comprises three planetary gears (A
1, A
2, A
3), wherein,
First order planetary gears (A
1) planet carrier assembly (4) can be fixed with respect to the housing (C) of speed changer, the output sun gear assembly (3) of first order planetary gears can be locked mutually with its planet carrier assembly (4), and the central shaft of the output sun gear assembly of first order planetary gears constitutes the output terminal of first order planetary gears;
Middle planetary gears (A
2) planet carrier assembly (4) can be fixed with respect to the housing (C) of speed changer, the output sun gear assembly (3) of middle planetary gears can be locked mutually with its planet carrier assembly (4), the central shaft of the input sun gear assembly of middle planetary gears links to each other with the central shaft of the output sun gear assembly of first order planetary gears, and the central shaft of the output sun gear assembly of middle planetary gears constitutes the output terminal of middle planetary gears; And
Afterbody planetary gears (A
3) planet carrier assembly (4) or output sun gear assembly (3) can be fixed with respect to the housing (C) of speed changer, the output sun gear assembly (3) of afterbody planetary gears can be locked mutually with its planet carrier assembly (4), the central shaft of the input sun gear assembly of afterbody planetary gears links to each other with the central shaft of the output sun gear assembly of the planetary gears of centre, and the central shaft of the output sun gear assembly of afterbody planetary gears and the planet carrier output shaft of planet carrier assembly constitute two output terminals of afterbody planetary gears, and these two output terminals link to each other with the output shaft assembly (8) of speed changer by output translator.
14., it is characterized in that: (the A of primary planet pinion mechanism in the end according to claim 12 or 13 described mechanical transmissions
n) and the output shaft assembly (8) of described speed changer between be provided with output conversion clutch (7) as output translator, described output conversion clutch (7) comprises active part (7a) and secondary part (7b), and the active part (7a) of described output conversion clutch (7) is divided into two parts: the first active part (7a
1) and the second active part (7a
2), the described first active part (7a
1) be connected and rotation synchronously the second active part (7a with the central shaft (32) of the output sun gear assembly of afterbody planetary gears
2) be connected and rotation synchronously with the planet carrier output shaft (43) of afterbody planetary gears; The secondary part (7b) of described output conversion clutch (7) is divided into two parts: the first secondary part (7b
1) and the second secondary part (7b
2), the described first secondary part (7b
1) and the described first active part (7a
1But) form the friction pair of carry-over moment, the described second secondary part (7b
2) and the described second active part (7a
2But) form the friction pair of carry-over moment, the described first secondary part (7b
1) and the described second secondary part (7b
2) all be connected with described transmission output shaft assembly (8) and rotation synchronously.
15. according to claim 12 or 13 described mechanical transmissions, it is characterized in that: output translator comprises (an A of primary planet pinion mechanism in the end
n) the planet carrier output spline (44) that go up to be provided with of planet carrier output shaft (43), the one (A of primary planet pinion mechanism in the end
n) the central shaft of output sun gear assembly (3) on the sun gear output spline (33) and the clutch collar that can slide vertically (6) that are provided with, the two ends of described clutch collar (6) endoporus are respectively equipped with first spline (61) and second spline (62), first spline (61) of described clutch collar (6) can mesh with described sun gear output spline (33), also can mesh, but can not mesh simultaneously with described sun gear output spline (33) and described planet carrier output spline (44) with described planet carrier output spline (44); Spline (81) on second spline (62) of described clutch collar (6) and the output shaft assembly (8) of speed changer is in engagement all the time.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201127990U CN201802825U (en) | 2010-02-11 | 2010-02-11 | Planet gear mechanism and mechanism transmission comprising same |
| PCT/CN2010/001134 WO2011097780A1 (en) | 2010-02-11 | 2010-07-26 | Planegary gear mechanism and mechanical transmission including the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201127990U CN201802825U (en) | 2010-02-11 | 2010-02-11 | Planet gear mechanism and mechanism transmission comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201802825U true CN201802825U (en) | 2011-04-20 |
Family
ID=43872325
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201127990U Expired - Fee Related CN201802825U (en) | 2010-02-11 | 2010-02-11 | Planet gear mechanism and mechanism transmission comprising same |
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| Country | Link |
|---|---|
| CN (1) | CN201802825U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108253039A (en) * | 2018-02-06 | 2018-07-06 | 舟富成科技（深圳）有限公司 | A kind of planetary gear freewheel clutch |
-
2010
- 2010-02-11 CN CN2010201127990U patent/CN201802825U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108253039A (en) * | 2018-02-06 | 2018-07-06 | 舟富成科技（深圳）有限公司 | A kind of planetary gear freewheel clutch |
| CN108253039B (en) * | 2018-02-06 | 2024-05-03 | 武汉易知鸟科技有限公司 | Planetary gear overrunning clutch |
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Address after: 315807 Zhejiang City, Beilun province Xiapu District, Ningbo Road, Pu Pu Road, No. 2 Patentee after: Ningbo Limited by Share Ltd Address before: 315807 Xiapu Industrial Park, Beilun District, Zhejiang City, No. South Embankment Road, No. 2 Patentee before: Ningbo Hongxie Clutch Co., Ltd. |
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