CN203868249U - Planetary gear - Google Patents
Planetary gear Download PDFInfo
- Publication number
- CN203868249U CN203868249U CN201420238429.XU CN201420238429U CN203868249U CN 203868249 U CN203868249 U CN 203868249U CN 201420238429 U CN201420238429 U CN 201420238429U CN 203868249 U CN203868249 U CN 203868249U
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- CN
- China
- Prior art keywords
- gear ring
- planet
- planet carrier
- output shaft
- planetary pinion
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Abstract
The utility model provides a planetary gear, and relates to the technical field of clutches. A planetary gear body comprises an input shaft, an output shaft, a gear ring, a braking device, a planet wheel, a sun gear and a planet carrier, wherein the input shaft is coupled with the sun gear; the output shaft is coupled with the planet carrier; a planetary shaft is arranged on the planet carrier; the planet wheel is connected with the planetary shaft through a bearing; the braking device is arranged on the outer side of the gear ring; the partial periphery of the gear ring is encircled by the side surface; the braking device can shrink in the radial direction to brake the gear ring; the braking device extrudes the braking surface in the axial direction to brake the braking surface; a bearing pedestal is arranged in the center of the planet carrier; an output shaft mounting hole is formed in the center of the bearing pedestal; a planetary shaft mounting hole is formed in the edge of the bearing pedestal. According to the utility model, the gear ring is fixed and loosened through the braking device, the sun gear is used as an input component, and the planet carrier is used as an output component, so that the function of the separation and combination of the input shaft and the output shaft can be realized.
Description
Technical field
The utility model relates to Clutch Technology field, specifically, relates to a kind of planetary pinion.
Background technique
For automobile, clutch is being brought into play great function on the automobile that adopts manual transmission, it is the direct part assembly of connecting engine and speed changer in power train, the power of motor is delivered to speed changer by clutch, and its main function has following three aspects: 1. ensure automobile balance starting; 2. ensure the smooth-going gear shift of power train; 3. prevent power train overload.The clutch principal mode adopting is at present friction clutcch, and it is that driving link and driven member produce frictional force by friction and carry out transferring power.In practice, this clutch there will be some faults that cannot overcome.Be mainly reflected in following several aspect: 1. cltuch slipping; 2. clutch separation is not thorough; 3. clutch shudder (joint irregularity); 4. clutch abnormal sound.Producing the topmost reason of above-mentioned fault is due to the friction disc wear on driven disc, cause combination between driving link and driven member not in place, can not be thoroughly while separating, hold-down mechanism presses not in place.Because driver's operation clutch is frequent, the wearing and tearing of friction plate are inevitable, and the problems referred to above can not solve, and meanwhile, the driven disc in clutch often will be changed, and the working life of clutch is not long.Driver has action key very in the time that clutch is handled: semi-linkage, namely half-clutch state.This action is necessary in the process of vehicle starting, only have by its guarantee automobile balance starting and be not easy to stop working, and more existing planetary gear type clutches, due to only from the action of closing, the requirement of semi-linkage can not be met, the requirement of gentle start can not be met.
Summary of the invention
Content of the present utility model is to provide a kind of planetary pinion, and it can overcome certain or some defect of prior art.
According to a kind of planetary pinion of the present utility model, it comprises planetary pinion body, and planetary pinion body comprises input shaft, output shaft, gear ring, braking device, planet wheel, sun gear and planet carrier, and input shaft connects with sun gear, and output shaft connects with planet carrier; Planet carrier is provided with planet axis, and planet wheel is connected by bearing with planet axis; Braking device is arranged at gear ring outside;
Gear ring comprises circle portion, tooth portion and buffering ball, and the periphery of circle portion is radially provided with the through hole of placing buffering ball, and the periphery of tooth portion is fixedly connected with circle portion in interior week; The outer openings of described through hole is configured to shrink to the axle of described through hole with a radian, and then makes the diameter of described outer openings be less than the diameter that cushions ball; Buffering ball is pressed in described outer openings by spring, between buffering ball and spring, is also provided with ball base;
Planet carrier is dome shape, and it comprises end face and side, and the joint of end face and side is configured to chamfering; The opening end of side extends outside and is configured to a circle braking surface, and the joint of braking surface and side is configured to chamfering;
The outer periderm of the part side of gear ring surrounds, and braking device radially shrinks can brake gear ring, and braking device pushes braking surface vertically can brake braking surface; The center of planet carrier is provided with a bearing support, and the center of bearing support is provided with output shaft mounting hole, and the edge of bearing support is provided with planet axis mounting hole.
The utility model is fixed gear ring by braking device and is unclamped, taking sun crop rotation as input block, and just can input shaft using planet carrier as output block and the clutch function of output shaft.
The utility model is in the time carrying out clutch operation, and all gears of planetary gears are intermeshing all the time, and without shifting slide gear, fretting wear is little; The utility model is simple in structure, compact, and its load is assigned on the tooth of One's name is legion, and intensity is large; Thereby greatly increase physical life of the present utility model.Sun gear of the present utility model does input end, planet carrier does output terminal, velocity ratio is greater than 1, like this, and concerning whole power train, the numeric ratio of velocity ratio adopts friction clutcch to want large, for requiring the situation that velocity ratio is larger, main reducing gear can adopt single step arrangement to meet the demands, power foot, reduce the overall sizes of main reducing gear, improve the passing ability of automobile.
Planet carrier of the present utility model is provided with planet axis mounting hole, and planet wheel is arranged on planet axis mounting hole by planet axis, and planet wheel is connected by bearing with planet axis; On the side of planet carrier, be also configured with a braking surface, such design makes, and in the time that braking device radially shrinks braking gear ring, planet carrier is in free state, now planet carrier rotates under the drive of planet wheel, thereby the power transmission of input shaft is arrived to output shaft; In the time that braking device pushes braking surface braking braking surface vertically, gear ring is in free state, and planet carrier is locked, and now planet wheel rotates around planet axis, thereby reaches the object of detachment dynamic.Gear ring of the present utility model is provided with buffering ball, braking device is in the process of clamping gear ring, the buffering ball arranging in gear ring periphery can progressively shrink in described through hole, rotate in the gap of braking device and gear ring because buffering ball is enough, thereby there is a difference in rotation in the rotation that ensures input shaft and output shaft in this process, keep half-clutch state, thereby ensured the gentle start of vehicle, difficult stopping working.
As preferably, the material of planet carrier is 42CrMo.
The material of planet carrier of the present utility model is 42CrMo, 42CrMo belongs to Ultrastrength Steel, there is high strength and toughness, hardenability is also better, without obvious temper brittleness, after quenching with Subsequent tempering, have higher fatigue limit and anti-repeatedly impact capacity, low-temperature impact toughness is good, can meet the demand of planet carrier in the utility model.
As preferably, output shaft mounting hole and output shaft pass through spline joint.
As preferably, planet wheel has 3, and corresponding 3 planet axis mounting holes circularize distribution, and the angle between any two planet axis mounting holes is 120 °.
Output shaft mounting hole of the present utility model and output shaft, by spline joint, are convenient to install.In a preferred embodiment of the present utility model, planet wheel has 3, and corresponding 3 planet axis mounting holes circularize distribution, and the angle between any two planet axis mounting holes is 120 °, and this can bring preferably effect for the utility model.
As preferably, ball base is cylindric, and it is provided with the groove for placing buffering ball with one end of buffering ball adjacency.
Ball base of the present utility model can provide a good rotation environment for buffering ball, make to cushion ball not can because of rub excessive cannot normal rotation, and cause normally entering half-clutch state.
As preferably, the surface of gear ring is provided with one deck nitride layer, and the thickness of nitride layer is M, 0.3mm≤M≤0.4mm, and the compound layer in nitride layer is not less than 0.007mm.
The surface of gear ring of the present utility model is provided with one deck nitride layer, thereby makes gear ring have preferably wear resistance, fatigue resistance, corrosion resistance and resistant to elevated temperatures characteristic.In the utility model, when the thickness of the nitride layer on gear ring surface is 0.3～0.4mm, when compound layer is not less than 0.007mm, can between cost of production and technique effect, obtain a preferably balance.
Brief description of the drawings
Fig. 1 is the structural representation of planetary pinion body in embodiment 1;
Fig. 2 is the structural representation of gear ring in embodiment 1;
Fig. 3 is the axial view of Fig. 2;
Fig. 4 is the A-A view of Fig. 3;
Fig. 5 is the enlarged view of B part in Fig. 4;
Fig. 6 is the structural representation of ball base in embodiment 1;
Fig. 7 is the structural representation of planet carrier in embodiment 1;
Fig. 8 is the axial view of Fig. 7;
Fig. 9 is the A-A view of Fig. 8.
Embodiment
For further understanding content of the present utility model, in conjunction with the accompanying drawings and embodiments the utility model is described in detail.
Embodiment 1
As shown in Figure 1, for a kind of planetary pinion in the present embodiment, it comprises planetary pinion body 100, planetary pinion body 100 comprises input shaft 110, output shaft 120, gear ring 130, braking device 140, planet wheel 150, sun gear 160 and planet carrier 170, input shaft 110 connects with sun gear 160, and output shaft 120 connects with planet carrier 170; Planet carrier 170 is provided with planet axis 151, and planet wheel 150 is connected by bearing with planet axis 151; Braking device 140 is arranged at gear ring 130 outsides;
As shown in Fig. 2～Fig. 5, gear ring 130 comprises circle portion 210, tooth portion 220 and buffering ball 230, and the periphery of circle portion 210 is radially provided with the through hole of placing buffering ball 230, and the periphery of tooth portion 220 is fixedly connected with circle portion 210 in interior week; The outer openings of described through hole is configured to shrink to the axle of described through hole with a radian, and then makes the diameter of described outer openings be less than the diameter that cushions ball 230; Buffering ball 230 is pressed in described outer openings by spring 420, between buffering ball 230 and spring 420, is also provided with ball base 410;
As shown in Fig. 6～Fig. 9, planet carrier 170 is dome shape, and it comprises end face 174 and side 175, and the joint of end face 174 and side 175 is configured to chamfering; The opening end of side 175 extends outside and is configured to a circle braking surface 176, and braking surface 176 is configured to chamfering with the joint of side 175;
The outer periderm of the part side 175 of gear ring 130 surrounds, and braking device 140 radially shrinks and can brake gear ring 130, and braking device 140 pushes braking surface 176 vertically can brake braking surface 176; Planet carrier 170 center is provided with a bearing support 172, and bearing support 172 center is provided with output shaft mounting hole 171, and the edge of bearing support 172 is provided with planet axis mounting hole 173.
In the present embodiment, the material of planet carrier 170 is 42CrMo.Output shaft mounting hole 171 passes through spline joint with output shaft 120.Planet wheel 150 has 3, and corresponding 3 planet axis mounting holes 173 circularize distribution, and the angle that any two planet axis mounting holes are 173 is 120 °.Ball base 410 is cylindric, and it is provided with the groove for placing buffering ball 230 with one end of buffering ball 230 adjacency.
The surface of gear ring 130 is provided with one deck nitride layer, and the thickness of nitride layer is 0.4mm, and the compound layer in nitride layer is 0.008mm.
In the time that gear ring in this enforcement 130 is braked device 140 and clamps, planet carrier 170 is in free state, driven by engine input shaft 110 rotates, input shaft 110 drives sun gear 160 to rotate, because gear ring 130 is in stationary state, thereby make planet carrier 170 under the effect of planet wheel 150 and the equidirectional rotation of sun gear 160, the power of motor is transmitted to speed changer by output shaft 120, now automobile normal running.
In the time that gear ring in the present embodiment 130 is braked device 140 and unclamps, planet carrier 170 is in clamped condition, although now sun gear 160 still rotates, because gear ring 130 is in free state, now planet wheel 150 can rotate and drive gear ring 130 to rotate around planet axis 151, now input shaft 110 separates with output shaft 120, and engine power can not be delivered to speed changer, and automobile cannot normally travel.
In the time that gear ring in the present embodiment 130 is changed to clamped condition by releasing orientation, the buffering ball 230 arranging on gear ring 130, can progressively in described through hole, shrink, rotate in the gap of braking device 140 and gear ring 130 because buffering ball 230 is enough, thereby ensure a difference in rotation diminishing gradually of existence between input shaft 110 and output shaft 120, can keep half-clutch state of a period of time, thereby ensure gentle start, the gearshift of vehicle, be difficult for flame-out.
6～18 buffering balls 230 can be set on gear ring 130, and the quantity that cushions ball 230 in the present embodiment is 12, now cushions the intensity that ball 230 can play good cushioning effect and can not affect gear ring 130.
Embodiment 2
A kind of planetary pinion of the present embodiment and embodiment 1 difference are: the thickness of the surface nitride layer of gear ring 130 is 0.3mm, and the compound layer in nitride layer is 0.007mm; The quantity of buffering ball 230 is 6.
Embodiment 3
A kind of planetary pinion of the present embodiment and embodiment 1 difference are: the thickness of the surface nitride layer of gear ring 130 is 0.35mm, and the compound layer in nitride layer is 0.01mm; The quantity of buffering ball 230 is 18.
Below schematically the utility model and mode of execution thereof are described, this description does not have restricted, and shown in accompanying drawing is also one of mode of execution of the present utility model, and actual structure is not limited to this.So, if those of ordinary skill in the art is enlightened by it, in the situation that not departing from the utility model creation aim, without the creationary mode of structure similar to this technological scheme and the embodiment of designing, all should belong to protection domain of the present utility model.
Claims (6)
1. a planetary pinion, it is characterized in that: comprise planetary pinion body (100), planetary pinion body (100) comprises input shaft (110), output shaft (120), gear ring (130), braking device (140), planet wheel (150), sun gear (160) and planet carrier (170), input shaft (110) connects with sun gear (160), and output shaft (120) connects with planet carrier (170); Planet carrier (170) is provided with planet axis (151), and planet wheel (150) is connected by bearing with planet axis (151); Braking device (140) is arranged at gear ring (130) outside;
Gear ring (130) comprises circle portion (210), tooth portion (220) and buffering ball (230), the periphery of circle portion (210) is radially provided with the through hole of placing buffering ball (230), and the periphery of tooth portion (220) is fixedly connected with circle portion (210) in interior week; The outer openings of described through hole is configured to shrink to the axle of described through hole with a radian, and then makes the diameter of described outer openings be less than the diameter of buffering ball (230); Buffering ball (230) is pressed in described outer openings by spring (420), between buffering ball (230) and spring (420), is also provided with ball base (410);
Planet carrier (170) is dome shape, and it comprises end face (174) and side (175), and the joint of end face (174) and side (175) is configured to chamfering; The opening end of side (175) extends outside and is configured to a circle braking surface (176), and braking surface (176) is configured to chamfering with the joint of side (175);
The outer periderm side (175) of part of gear ring (130) surrounds, braking device (140) radially shrinks and can brake gear ring (130), and braking device (140) pushes braking surface (176) vertically can brake braking surface (176); The center of planet carrier (170) is provided with a bearing support (172), the center of bearing support (172) is provided with output shaft mounting hole (171), and the edge of bearing support (172) is provided with planet axis mounting hole (173).
2. according to a kind of planetary pinion shown in claim 1, it is characterized in that: the material of planet carrier (170) is 42CrMo.
3. according to a kind of planetary pinion shown in claim 1, it is characterized in that: output shaft mounting hole (171) passes through spline joint with output shaft (120).
4. according to a kind of planetary pinion shown in claim 1, it is characterized in that: planet wheel (150) has 3, corresponding 3 planet axis mounting holes (173) circularize distribution, and the angle between any two planet axis mounting holes (173) is 120 °.
5. a kind of planetary pinion according to claim 1, is characterized in that: ball base (410) is for cylindric, and it is provided with the groove for placing buffering ball (230) with one end of buffering ball (230) adjacency.
6. according to a kind of planetary pinion described in any one in claim 1-5, it is characterized in that: the surface of gear ring (130) is provided with one deck nitride layer, the thickness of nitride layer is M, 0.3mm≤M≤0.4mm, and the compound layer in nitride layer is not less than 0.007mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420238429.XU CN203868249U (en) | 2014-05-09 | 2014-05-09 | Planetary gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420238429.XU CN203868249U (en) | 2014-05-09 | 2014-05-09 | Planetary gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203868249U true CN203868249U (en) | 2014-10-08 |
Family
ID=51649205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420238429.XU Expired - Fee Related CN203868249U (en) | 2014-05-09 | 2014-05-09 | Planetary gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203868249U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594584A (en) * | 2020-05-29 | 2020-08-28 | 全椒县众联机械有限公司 | High-toughness wear-resistant planetary gear |
-
2014
- 2014-05-09 CN CN201420238429.XU patent/CN203868249U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594584A (en) * | 2020-05-29 | 2020-08-28 | 全椒县众联机械有限公司 | High-toughness wear-resistant planetary gear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 Termination date: 20160509 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |