CN202468868U - Automatic speed changer - Google Patents
Automatic speed changer Download PDFInfo
- Publication number
- CN202468868U CN202468868U CN2012200434844U CN201220043484U CN202468868U CN 202468868 U CN202468868 U CN 202468868U CN 2012200434844 U CN2012200434844 U CN 2012200434844U CN 201220043484 U CN201220043484 U CN 201220043484U CN 202468868 U CN202468868 U CN 202468868U
- Authority
- CN
- China
- Prior art keywords
- gear
- bearing
- main shaft
- automatic transmission
- belt wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides an automatic speed changer. According to the automatic speed changer, two one-way bearings are arranged on a main shaft; a first one-way bearing is connected with a belt wheel directly; a second one-way bearing is connected with the belt wheel by a planetary gear transmission mechanism; and the planetary gear transmission mechanism achieves an effect of changing a transmission ratio, so that a good speed-change effect can be achieved. The automatic speed changer is simple and compact in structure, convenient to maintain, disassemble and assemble, low in noise during operation, low in leakage of oil and convenient to clean.
Description
Technical field
The utility model relates to a kind of speed changer, particularly a kind of compact structure, and noise is little, the automatic transmission of easy accessibility.
Background technique
Speed changer is a kind of device that is used to change machine run speed such as lathe, automobile, tractor or tractive force, is made up of the gear that many diameter are different, is contained in usually between the driving shaft and driven shaft of motor.Mechanical gearbox has mainly been used gear-driven reduction of speed principle.Briefly, the different gear pair of many group velocity ratios is arranged in the gearbox, and the gear shift behavior during automobile running just makes gear pair work different in the gearbox through operating mechanism.As when the low speed, let the big gear pair work of velocity ratio, and when high speed; Let the little gear pair work of velocity ratio, speed changer in the past all adopt three axles to connect to reach speed changing function, complex structure through different gear pairs respectively; The dismounting difficulty; And generally all have phenomenons such as leakage of oil, and operating noise is big, and reliability is low.
Summary of the invention
In order to overcome the deficiency of existing technology, the utility model provides a kind of compact structure, and noise is little, the automatic transmission of easy accessibility.
The utility model solves the technological scheme that its technical problem adopted:
A kind of automatic transmission comprises main shaft, belt wheel and gear housing, and described main shaft is provided with two unilateral bearings, and first unilateral bearing directly links to each other with belt wheel, and second unilateral bearing links to each other with belt wheel through planetary gear mechanism;
As the improvement of such scheme, said main shaft bottom is outside equipped with bearing, and gear housing is fastened on the bearing outside, and gear housing top is fastened with gear box cover;
As the further improvement of such scheme, described planetary gear mechanism is installed on the gear box cover;
Further, described planetary gear mechanism comprises the sun gear that links to each other with main shaft, and sun gear cooperatively interacts with peripheral planetary pinion, and planetary pinion is through the mutual transmission of planet pin of bearing and center, and the planetary pinion arranged outside has gear ring;
Further, said planet pin with its on the bearing installed be connected through jump ring;
Further, described second unilateral bearing is arranged between main shaft and the gear ring;
Further, be provided with bearing between said sun gear and the main shaft;
Further, said bearing top is provided with oil sealing, and the bottom is provided with spacer;
Further, be provided with key in the described main shaft.
The beneficial effect of the utility model is: the utility model is provided with two unilateral bearings through main shaft, and first unilateral bearing directly links to each other with belt wheel, and second unilateral bearing links to each other with belt wheel through planetary gear mechanism; Planetary gear mechanism plays the effect that changes velocity ratio; Therefore can play speed changing effect preferably, the utility model is simple and compact for structure, and noise is low in maintenance easy accessibility and the work; Leakage of oil is few, is convenient to cleaning.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is the sectional view of the utility model.
Embodiment
With reference to Fig. 1, a kind of automatic transmission comprises main shaft 1, belt wheel 2 and gear housing 3; Described main shaft 1 is provided with two unilateral bearings 4; First unilateral bearing 41 directly links to each other with belt wheel 2, and second unilateral bearing 42 links to each other with belt wheel 2 through planetary gear mechanism 5, and unilateral bearing 4 also can be changed to free wheel device certainly; So long as reach the technique effect of the utility model, all should belong to the protection domain of the utility model with essentially identical means.
Said main shaft 1 bottom is outside equipped with bearing, and gear housing 3 is fastened on the bearing outside, and gear housing 3 tops are fastened with gear box cover 6.
Described planetary gear mechanism 5 is installed on the gear box cover 6, and gear box cover 6 is the effect that case lid plays planetary gear carrier again.
Described planetary gear mechanism 5 comprises the sun gear 51 that links to each other with main shaft 1; Sun gear 51 cooperatively interacts with peripheral planetary pinion 52; Planetary pinion 52 is through the planet pin 53 mutual transmissions of bearing and center; Planetary pinion 52 arranged outside have gear ring 54, and described second unilateral bearing 42 is arranged between main shaft 1 and the gear ring 54.
Said planet pin 53 with its on the bearing installed be connected through jump ring 55, said jump ring 55 is contained in the axial trough, plays a part the axial motion of prevention parts on shaft.
Be provided with bearing between said sun gear 51 and the main shaft 1, friction factor and retainer shaft central position that bearing is used for reducing in the power transmission process are fixed.
Said bearing top is provided with oil sealing 7, and the bottom is provided with spacer 8, can reduce leakage of oil as far as possible.
Be provided with key 9 in the described main shaft 1, key 9 is main as circumferentially fixing with transmitting torque between axle and the parts on shaft.
The working principle of the utility model: main shaft 1 is provided with two unilateral bearings 4; First unilateral bearing 41 directly links to each other with belt wheel 2; Second unilateral bearing 42 links to each other with belt wheel 2 through planetary gear mechanism 5, the rotation that belt wheel 2 transmits if with first unilateral bearing, the 41 identical main shafts 1 that then are directly passed to, if the opposite sun gear 51 that then passes through in the planetary gear mechanism 5; Sun gear 51 drives planetary pinion 52; Planetary pinion 52 drives gear rings 54, gear ring 54 motions and gear box cover 6 also is that the planet gear stand is motionless, and gear ring 54 passes to main shaft with power through second unilateral bearing 42 then; Thereby can play the effect speed change that changes velocity ratio; Can make that again the rotation transmission direction is consistent with the transmission direction of second unilateral bearing 42, make rotation is passed to main shaft 1, realize the automatic speed changing that power is exported through the sense of rotation of improving the power input.
Claims (9)
1. automatic transmission; Comprise main shaft (1), belt wheel (2) and gear housing (3); It is characterized in that: described main shaft (1) is provided with two unilateral bearings (4); First unilateral bearing (41) directly links to each other with belt wheel (2), and second unilateral bearing (42) links to each other with belt wheel (2) through planetary gear mechanism (5).
2. a kind of automatic transmission according to claim 1 is characterized in that: said main shaft (1) bottom is outside equipped with bearing, and gear housing (3) is fastened on the bearing outside, and gear housing (3) top is fastened with gear box cover (6).
3. a kind of automatic transmission according to claim 1 and 2 is characterized in that: described planetary gear mechanism (5) is installed on the gear box cover (6).
4. a kind of automatic transmission according to claim 1; It is characterized in that: described planetary gear mechanism (5) comprises the sun gear (51) that links to each other with main shaft (1); Sun gear (51) cooperatively interacts with peripheral planetary pinion (52); Planetary pinion (52) is through planet pin (53) transmission each other of bearing and center, and planetary pinion (52) arranged outside has gear ring (54).
5. a kind of automatic transmission according to claim 4 is characterized in that: said planet pin (53) with its on the bearing installed be connected through jump ring (55).
6. according to claim 1 or 4 described a kind of automatic transmission, it is characterized in that: described second unilateral bearing (42) is arranged between main shaft (1) and the gear ring (54).
7. a kind of automatic transmission according to claim 4 is characterized in that: be provided with bearing between said sun gear (51) and the main shaft (1).
8. according to claim 2 or 7 described a kind of automatic transmission, it is characterized in that: said bearing top is provided with oil sealing (7), and the bottom is provided with spacer (8).
9. a kind of automatic transmission according to claim 1 is characterized in that: be provided with key (9) in the described main shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200434844U CN202468868U (en) | 2012-02-11 | 2012-02-11 | Automatic speed changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200434844U CN202468868U (en) | 2012-02-11 | 2012-02-11 | Automatic speed changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202468868U true CN202468868U (en) | 2012-10-03 |
Family
ID=46917027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200434844U Expired - Fee Related CN202468868U (en) | 2012-02-11 | 2012-02-11 | Automatic speed changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202468868U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537259A (en) * | 2012-02-11 | 2012-07-04 | 柯伯林 | Automatic transmission |
-
2012
- 2012-02-11 CN CN2012200434844U patent/CN202468868U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537259A (en) * | 2012-02-11 | 2012-07-04 | 柯伯林 | Automatic transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20140211 |