CN210371844U - Rotating shaft assembly, speed reducer and vehicle - Google Patents
Rotating shaft assembly, speed reducer and vehicle Download PDFInfo
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- CN210371844U CN210371844U CN201921299799.3U CN201921299799U CN210371844U CN 210371844 U CN210371844 U CN 210371844U CN 201921299799 U CN201921299799 U CN 201921299799U CN 210371844 U CN210371844 U CN 210371844U
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- gear
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- shaft assembly
- sleeve
- rotating shaft
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- 239000003638 chemical reducing agent Substances 0.000 title claims description 19
- 241000883990 Flabellum Species 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims description 14
- 230000020347 spindle assembly Effects 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 239000010687 lubricating oil Substances 0.000 description 6
- 238000005461 lubrication Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model provides a pivot subassembly, reduction gear and vehicle. The rotating shaft assembly comprises a first rotating shaft and a first bearing, wherein the first bearing is sleeved at least one end of the first rotating shaft, a first gear is arranged on a shaft body of the first rotating shaft, the rotating shaft assembly further comprises a positioning shaft sleeve, the positioning shaft sleeve is sleeved on the first bearing and the shaft body between the first gears, the positioning shaft sleeve comprises a sleeve, a plurality of first fan blades are arranged on the peripheral wall of the sleeve, the first fan blades are arranged along the radial direction of the sleeve, the outer side of the first shaft extends outwards, and the pressure surfaces of the first fan blades face one side of the first bearing. According to the utility model discloses a pivot subassembly, reduction gear and vehicle lubricate the first bearing and realize the heat dissipation through the first flabellum that sets up on the location axle sleeve, effectively prevent bearing failure, extension bearing life.
Description
Technical Field
The invention belongs to the technical field of reducer manufacturing, and particularly relates to a rotating shaft assembly, a reducer and a vehicle.
Background
In recent years, new energy pure electric vehicles develop rapidly, and the requirement on cost is more and more highlighted while the technology is more and more mature. In order to achieve high efficiency and low cost, the rotation speed of the driving motor of the new energy automobile is increased more and more, and accordingly, the speed reducer matched with the driving motor is required to be developed along with the development of the high-speed motor. However, after the two-stage gear reducer is speeded up, the existing splash lubrication is adopted, the lubrication requirements of internal parts of the reducer can not be completely met, particularly, the lubricating oil quantity of the support bearings at the two ends of the rotating shaft is seriously insufficient, heat accumulation is caused at the bearings along with the operation of the rotating shaft due to insufficient lubrication, gluing and carbonization are easily caused on rotating matching pairs such as bearing rollers, the service life of the bearings and even the reducer is seriously shortened, and the failure probability of the bearings is multiplied. Fig. 1 shows a transmission connection relationship of an internal rotation shaft assembly of a speed reducer in the prior art, which includes an input rotation shaft assembly 100 ', an intermediate transmission rotation shaft assembly 200 ', an output rotation shaft assembly 300 ', an external rotation driving source such as a high-speed motor is in driving connection with the input rotation shaft assembly 100 ' and drives the input rotation shaft assembly to rotate, the input rotation shaft assembly 100 ' and the intermediate transmission rotation shaft assembly 200 ' are in gear engagement connection, and the intermediate transmission rotation shaft assembly 200 ' and the output rotation shaft assembly 300 ' are in gear engagement connection, so that a high rotation speed of the high-speed motor is reduced to a low rotation speed of the output rotation shaft assembly 300 ' and a control object is driven to rotate at a lower rotation speed.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to provide a rotating shaft assembly, a speed reducer and a vehicle, wherein a first fan blade arranged on a positioning shaft sleeve is used for lubricating a first bearing and realizing heat dissipation, thereby effectively preventing the bearing from losing efficacy and prolonging the service life of the bearing.
In order to solve the above problems, the present invention provides a rotating shaft assembly, including a first rotating shaft, a first bearing, wherein the first bearing is sleeved on at least one end of the first rotating shaft, a first gear is provided on a shaft body of the first rotating shaft, the rotating shaft assembly further includes a positioning shaft sleeve, the positioning shaft sleeve is sleeved on the shaft body between the first bearing and the first gear, the positioning shaft sleeve includes a sleeve, a plurality of first blades are provided on a circumferential wall of the sleeve, the plurality of first blades extend outward along a radial direction of the sleeve, and a pressure surface of the plurality of first blades faces one side of the first bearing.
Preferably, the first gear is integrally formed with the first shaft.
Preferably, the positioning sleeve is an injection molded part.
Preferably, the number of the positioning shaft sleeves is two, and the two positioning shaft sleeves are respectively located on two sides of the first gear along the axial direction of the first rotating shaft.
The invention also provides a speed reducer which comprises the rotating shaft assembly.
Preferably, the spindle assembly is an input spindle assembly.
Preferably, the reduction gear still includes middle transmission pivot subassembly, middle transmission pivot subassembly includes the second gear, the second gear with first gear engagement is connected, the second gear includes tooth portion, pivot cup joint portion, tooth portion with still have a plurality of second flabellums between the pivot cup joint portion.
Preferably, the intermediate transmission rotating shaft assembly further comprises a third gear and a second bearing, the second gear is sleeved on a shaft body between the second bearing and the third gear, and a pressure surface of at least part of the second fan blades faces the third gear.
The invention also provides a vehicle comprising the speed reducer.
According to the rotating shaft assembly, the speed reducer and the vehicle, the first fan blade is arranged on the outer peripheral side of the traditional positioning shaft sleeve, when the rotating shaft assembly is driven to rotate, the positioning shaft sleeve is driven to rotate by the rotating shaft assembly, and then airflow flows are formed nearby the first fan blade; further, the first rotating fan blade can throw lubricating oil splashed to the pressure surface of the first rotating fan blade to the first bearing, so that forced lubrication can be realized on the first bearing, and the service life of the first bearing is prolonged.
Drawings
FIG. 1 is a schematic view of the internal structure of a decelerator in the prior art;
FIG. 2 is a schematic structural diagram of a spindle assembly according to an embodiment of the present invention;
FIG. 3 is an exploded view of the spindle assembly according to the embodiment of the present invention;
FIG. 4 is a schematic structural view of the locating boss of FIG. 2;
FIG. 5 is a schematic view showing an internal structure of a decelerator according to another embodiment of the present invention;
fig. 6 is a schematic structural view of the second gear in fig. 5.
The reference numerals are represented as:
1. a first rotating shaft; 2. a first gear; 3. a first bearing; 4. positioning the shaft sleeve; 41. a sleeve; 42. a first fan blade; 100. an input shaft assembly; 200. an intermediate drive shaft assembly; 201. a second gear; 202. a tooth portion; 203. a rotating shaft sleeve joint part; 204. a second fan blade; 205. a second bearing; 206. a third gear; 300. an output shaft assembly; 100', an input shaft assembly; 200', an intermediate transmission rotating shaft component; 300' and an output rotating shaft assembly.
Detailed Description
Referring to fig. 2 to 6 in combination, according to an embodiment of the present invention, there is provided a rotating shaft assembly installed in a speed reducer, including a first rotating shaft 1 and a first bearing 3, where the first bearing 3 is sleeved on at least one end of the first rotating shaft 1, and is used to support the first rotating shaft 1 and ensure that the first rotating shaft 1 can generate a rotating motion around an axis thereof, a first gear 2 is provided on a shaft body of the first rotating shaft 1, the first gear 2 is sleeved on or integrally formed with the first rotating shaft 1, and a positioning shaft sleeve 4 is further included, the positioning shaft sleeve 4 is sleeved on the shaft body between the first bearing 3 and the first gear 2, and is used to position the first bearing 3 and the first gear 2 in an axial direction of the first rotating shaft 1, so as to prevent an axial movement between the first bearing 3 and the first gear 2, as shown in fig. 4, the positioning sleeve 4 includes a sleeve 41, a plurality of first blades 42 are disposed on a circumferential wall of the sleeve 41 at intervals, the plurality of first blades 42 extend outward along a radial direction of the sleeve 41, and the pressure surface of the first fan blades 42 faces the first bearing 3, it should be noted here that, the first fan blade 42 can be designed according to the fan blades in the prior art in terms of specific structural design, that is, it has the pressure surface and the suction surface which are oppositely arranged, specifically, the pressure surface is the side capable of generating a thrust on a fluid (e.g. air flow or lubricating oil) away from first vane 42, the suction surface is the side surface capable of absorbing the fluid to generate the suction force toward the first fan blade 42, this is for traditional axial fan, and the pressure face is used for the air-out, and the suction surface is used for the air inlet. In the technical scheme, as the first fan blade 42 is arranged on the outer peripheral side of the traditional positioning shaft sleeve, when the rotating shaft assembly is driven to rotate, the rotating shaft assembly drives the positioning shaft sleeve 4 to rotate, and further airflow flows are formed near the first fan blade 42, and as the pressure surface of the first fan blade 42 faces the first bearing 3, the rotating first fan blade 42 can form cooling airflow for the first bearing 3, so that the heat dissipation efficiency and the heat dissipation effect of the first bearing 3 can be improved, the phenomenon that lubricating oil at the first bearing 3 is carbonized and even a rotating pair is glued and fails due to overhigh heat of high-speed rotation is effectively prevented, and the service life of the first bearing 3 is prolonged; further, the rotating first fan blade 42 can also throw the lubricating oil splashed on the pressure surface thereof to the first bearing 3, so that the first bearing 3 can be forcibly lubricated, which is also beneficial to prolonging the service life of the first bearing 3.
Preferably, the first gear 2 is integrally formed with the first rotating shaft 1, and the manner of integrally forming the first gear 2 on the shaft body of the first rotating shaft 1 is particularly suitable for the case that the diameter of the first gear 2 is small, which can prevent the first gear 2 from being insufficient in structural strength by the sleeved connection manner.
Preferably, the positioning shaft sleeve 4 is an injection molded part, and the sleeve 41 and the first fan blade 42 of the positioning shaft sleeve 4 are manufactured by injection molding, so as to simplify the processing process of the fan blade, and it can be understood that corresponding positioning shoulders (at two axial ends of the first gear 2) are preferably correspondingly configured on the shaft body of the first rotating shaft 1 at this time, so as to position the first bearings 3 at the two ends and bear the axial load of the first rotating shaft 1, and the positioning shaft sleeve 4 at this time is formed by an injection molded part and is sleeved on the positioning shoulders.
Preferably, there are two positioning shaft sleeves 4, and the two positioning shaft sleeves 4 are respectively located at two sides of the first gear 2 along the axial direction of the first rotating shaft 1.
According to an embodiment of the present invention, there is further provided a speed reducer, including the above-mentioned rotating shaft assembly, specifically, the speed reducer includes a box (not shown), and an input rotating shaft assembly 100, an intermediate transmission rotating shaft assembly 200, and an output rotating shaft assembly 300 are erected in the box, where the input rotating shaft assembly 100 is a power input shaft, and is in driving connection with an external power driving source (such as a high-speed motor), and the input rotating shaft assembly 100 is preferably a rotating shaft assembly with the above-mentioned structure as a high-speed rotating shaft, so as to perform air cooling heat dissipation and forced lubrication on the first bearings 3 at both ends of the input rotating shaft assembly 100 through the positioning bushings 4 with fan blades, and effectively prevent adverse phenomena such as bearing failure.
Middle transmission pivot subassembly 200 includes second gear 201, second gear 201 with first gear 2 meshes the connection, second gear 201 includes tooth portion 202, pivot cup joint portion 203, tooth portion 202 with pivot cup joint portion 203 still has a plurality of second flabellum 204, and the flat web between tooth portion 202 among the prior art and the pivot cup joint portion 203 among this technical scheme that also is promptly improves for this application second flabellum 204 forms the flabellum web, can promote the air flow of second gear 201 adjacent region improves the radiating effect of corresponding regional inner part, preferably, a plurality of second flabellums 204 along the even interval setting of circumference of pivot cup joint portion 203.
Preferably, the intermediate transmission rotating shaft assembly 200 further includes a third gear 206 and a second bearing 205, the second gear 201 is sleeved on a shaft body between the second bearing 205 and the third gear 206, a pressure surface of at least a part of the second blades 204 of the plurality of second blades 204 faces the third gear 206, it can be understood that the third gear 206 is coaxial with the second gear 201, the third gear 206 is meshed with the low-speed gear of the output rotating shaft assembly 300, and the third gear 206 is arranged adjacent to the second gear 201, so that the second blades 204 generate a certain air volume to dissipate heat at the meshing position of the low-speed gear pair, and simultaneously, part of the lubricating oil can be thrown to the tooth surface of the low-speed gear, thereby preventing or reducing the gluing of the tooth surface of the gear during heavy loading.
According to an embodiment of the invention, there is also provided a vehicle including the speed reducer described above.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.
Claims (9)
1. The utility model provides a rotating shaft assembly, includes first pivot (1), first bearing (3) cup joint in at least one end of first pivot (1), first gear (2) have on the axis body of first pivot (1), still include location axle sleeve (4), location axle sleeve (4) suit in first bearing (3) with on the axis body between first gear (2), its characterized in that, location axle sleeve (4) include sleeve (41), be equipped with a plurality of first flabellums (42) on the perisporium of sleeve (41), it is a plurality of first flabellum (42) along the radial outside extension of sleeve (41), just the pressure face of a plurality of first flabellums (42) is towards first bearing (3) one side.
2. A spindle assembly according to claim 1, characterized in that the first gear wheel (2) is formed integrally with the first spindle (1).
3. A spindle assembly according to claim 1, characterized in that the locating bushing (4) is an injection molded part.
4. A rotary shaft assembly according to claim 1, characterized in that the number of the positioning bushings (4) is two, and the two positioning bushings (4) are respectively arranged on two sides of the first gear (2) along the axial direction of the first rotary shaft (1).
5. A decelerator comprising a shaft assembly, wherein the shaft assembly is as claimed in any one of claims 1 to 4.
6. A decelerator according to claim 5, wherein the shaft assembly is an input shaft assembly (100).
7. The reducer according to claim 6, further comprising an intermediate transmission shaft assembly (200), wherein the intermediate transmission shaft assembly (200) comprises a second gear (201), the second gear (201) is in meshed connection with the first gear (2), the second gear (201) comprises a toothed portion (202) and a shaft sleeve portion (203), and a plurality of second blades (204) are further arranged between the toothed portion (202) and the shaft sleeve portion (203).
8. A reducer according to claim 7, wherein the intermediate transmission shaft assembly (200) further comprises a third gear (206) and a second bearing (205), the second gear (201) is sleeved on a shaft body between the second bearing (205) and the third gear (206), and the pressure surfaces of the second fan blades (204) face the third gear (206).
9. A vehicle comprising a retarder, characterized in that the retarder is a retarder according to any of claims 5-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921299799.3U CN210371844U (en) | 2019-08-12 | 2019-08-12 | Rotating shaft assembly, speed reducer and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921299799.3U CN210371844U (en) | 2019-08-12 | 2019-08-12 | Rotating shaft assembly, speed reducer and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210371844U true CN210371844U (en) | 2020-04-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921299799.3U Active CN210371844U (en) | 2019-08-12 | 2019-08-12 | Rotating shaft assembly, speed reducer and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210371844U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332282A (en) * | 2019-08-12 | 2019-10-15 | 珠海格力电器股份有限公司 | Rotating shaft assembly, speed reducer and vehicle |
-
2019
- 2019-08-12 CN CN201921299799.3U patent/CN210371844U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332282A (en) * | 2019-08-12 | 2019-10-15 | 珠海格力电器股份有限公司 | Rotating shaft assembly, speed reducer and vehicle |
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