CN212657186U - Hub reduction mechanism of four-planet gear train - Google Patents
Hub reduction mechanism of four-planet gear train Download PDFInfo
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- CN212657186U CN212657186U CN202020897340.XU CN202020897340U CN212657186U CN 212657186 U CN212657186 U CN 212657186U CN 202020897340 U CN202020897340 U CN 202020897340U CN 212657186 U CN212657186 U CN 212657186U
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Abstract
The utility model discloses a hub reduction gears of four planet trains, this hub reduction gears are including casing and the gear train of assembly in the casing, the casing comprises the lid of disk body and rigid coupling at the disk body terminal surface, be formed with four assembly grooves one that are used for the assembly connection gear train in the lid, the gear train comprises four equipartition settings and the planet wheel of assembling in four assembly grooves one respectively, the middle part of lid still is formed with assembly groove two that is used for assembling the sun gear, sun gear and planet wheel meshing. The utility model discloses an adopt four planetary gear's the effectual tangential force and the radial force that have reduced its gear and receive of reduction gears, can effectual improvement gear's life through the four planetary gear trains that adopt under the condition that satisfies four laws of planetary gear train for the tangential force and the radial force that the gear received all reduce by a wide margin, have improved life, also further reduction this kind of reduction gears noise in service.
Description
Technical Field
The utility model relates to a reduction gears technical field specifically is a hub reduction gears of four planetary gear trains.
Background
The traditional wheel-side speed reducing mechanism of a large-tonnage forklift drive axle mainly adopts a wheel-side speed reducing mechanism with three planetary gears, the gear in the transmission process is relatively large in tangential force and radial force, the service life of the gear is seriously influenced, and meanwhile, the structure also enables the gear to generate large noise in the operation process, so that the defects of the prior art are overcome, and a more stable speed reducer is provided to form a speed reducer which needs to be solved by technical personnel in the related field.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a wheel limit reduction gears of four planetary gear trains to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a hub reduction gears of four planet trains, this hub reduction gears is including casing and the gear train of assembly in the casing, the casing comprises the lid of disk body and rigid coupling at the disk body terminal surface, be formed with four assembly grooves one that are used for the assembly connection gear train in the lid, the gear train comprises four equipartition settings and the planet wheel of assembling in four assembly grooves one respectively, the middle part of lid still is formed with assembly groove two that is used for assembling the sun gear, sun gear and planet wheel meshing.
A first positioning hole used for being assembled and connected with one end of the planet wheel is formed in the disc body, and a second positioning hole used for being assembled and connected with the other end of the planet wheel is formed in the cover body.
The cover body is of a cylindrical structure, a first assembling groove and a second assembling groove which are formed in the cover body are communicated, and an opening part communicated with the first assembling groove is formed in the side wall of the cover body.
According to the above technical scheme, the utility model discloses an effectual tangential force and the radial force that has reduced its gear and receive of reduction gears who adopts four planetary gear, can effectual improvement gear's life through the four planetary gear trains that adopt under the condition that satisfies four laws of planetary gear train for the tangential force and the radial force that the gear received all reduce by a wide margin, have improved life, also further have reduced this kind of reduction gears noise in service.
Drawings
FIG. 1 is a schematic structural view of the assembled axle housing of the present invention;
FIG. 2 is a schematic view of the housing structure of the present invention;
FIG. 3 is a schematic view of the assembly structure of the present invention;
FIG. 4 is a force analysis diagram of the sun gear of the present invention;
FIG. 5 is a force analysis diagram of the planetary gear of the present invention;
fig. 6 is a force analysis diagram of the ring gear of the present invention.
In the figure: the device comprises a shell 1, a disk 11, a first 111 positioning hole, a first 12 cover body, a first 121 assembly groove, an opening 122, a second 123 assembly groove, a second 124 positioning hole, a shell 2 axle, a planet 3 wheel and a rotating shaft 4.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
referring to fig. 1, this wheel reduction mechanism assembles at the both ends of axle casing 2, and the embodiment through adopting four planet wheels of this case has solved among the prior art that the fork truck transaxle internal gear receives the equal great problem of tangential force and radial force, further improvement the practical life of gear, reduced the problem that the gear produced great noise in the operation process simultaneously, concrete structure is as follows:
referring to fig. 2-3, the hub reduction mechanism includes a housing 1 and a gear set assembled in the housing 1, the housing 1 is composed of a disc body 11 and a cover body 12 fixedly connected to an end surface of the disc body 11, the connection mode of the two is not limited in this embodiment, and welding and the like can be generally adopted to implement effective fixing; in order to assemble four planet wheels 3, four assembly grooves one 121 for assembling four planet wheels 3 are formed in the cover body 12; meanwhile, in order to mesh the planetary gear 3 with the sun gear, a second assembling groove 123 for assembling the sun gear is formed in the middle of the cover 12, specifically, in the assembling process, the end of the rotating shaft 4 is assembled with the sun gear, and the sun gear is assembled into the second assembling groove 123 through a through hole at the end face of the cover 12 and is meshed with the four planetary gears 3.
In order to achieve the assembly effect of the planet wheel 3, the embodiment preferably forms a positioning hole one 111 on the disc body 11 for assembling one end of the planet wheel 3, and corresponds to that, the planet wheel 3 forms a cylindrical convex part at the end and is rotatably connected in the positioning hole one 111 through the cylindrical convex part; meanwhile, a second positioning hole 124 for assembling and connecting the other end of the planet wheel 3 is formed on the cover body 12, and the planet wheel 3 is also formed with a cylindrical convex part at the end and is rotatably connected in the second positioning hole 124 through the cylindrical convex part.
Further, the cover 12 is configured as a cylindrical structure, the first assembling groove 121 and the second assembling groove 123 are formed in the cylindrical structure, an opening 122 communicating with the first assembling groove 121 is formed on the side wall of the cover 12, when the planet wheel 3 is assembled in the first assembling groove 121, a tooth portion of the planet wheel can be formed on the outer side of the cover 12 through the opening 122, and an inner gear ring is assembled on the cover 12 and meshed with the four planet wheels 3.
In order to further explain that the four planet wheels 3 adopted by the scheme can effectively prolong the service life of the gear, the following stress analysis is adopted:
see fig. 4-6 for an illustration:
firstly, the method comprises the following steps: the force analysis is carried out on the sun wheel which is arranged at the end part of the rotating shaft 4 and is meshed with the planet wheel 3, and the following results can be obtained:
tangential force:
radial force:
wherein, TAInput torque, CS-Number of planetary gears rASun gear reference circle radius, αn-normal pressure angle, beta-pitch angle on the pitch circle;
under the condition that the input torque is the same as the reference circle radius of the sun gear, the larger the number of the planet gears 3 is, the smaller the tangential force is (the number of the planet gears needs to meet the four-rule of the planetary gear train), and the tangential force borne by the sun gear of the four-planetary gear train is smaller than that of the sun gear of the three-planetary gear train;
the four planetary gears are meshed with the sun gear, the normal meshing pressure angle is smaller than that of the three planetary gears, and the spiral pressure angles on the reference circle are the same; the sun gear of the four-planetary system is subjected to a smaller radial force than the sun gear of the three-planetary system.
II, secondly: the force analysis of the planet wheel 3 can obtain:
tangential force: ftAC＝FtCA≈FtBC；
Radial force: frAC＝FrCA≈FrBC；
The tangential force and the radial force of the sun wheel on the planet wheel 3 and the tangential force and the radial force on the sun wheel are acting force and reaction force; the tangential force and the radial force of the inner gear ring on the planet wheel 3 are approximately equal to the tangential force and the radial force of the sun wheel on the planet wheel;
thirdly, the method comprises the following steps: the force analysis of the inner gear ring can obtain:
tangential force: ftCB＝FtBC≈FtCA；
Radial force: frCB＝FrBC；
The tangential force and the radial force of the planet wheel on the inner gear ring and the tangential force and the radial force of the inner gear on the planet wheel are acting force and reaction force.
From the above, when the hub reduction mechanism meets the precondition of the four-law of the planetary gear train, the four-planetary gear train is superior to the three-planetary gear train structure.
The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.
Claims (3)
1. The utility model provides a hub reduction gears of four planetary gear trains which characterized in that: this hub reduction gears is including the casing and assemble the gear train in the casing, the casing comprises disk body and rigid coupling at the lid of disk body terminal surface, be formed with four assembly grooves one that are used for the assembly connection gear train in the lid, the gear train comprises four equipartition settings and the planet wheel of assembling respectively in four assembly grooves one, the middle part of lid still is formed with assembly groove two that is used for assembling the sun gear, sun gear and planet wheel meshing.
2. The hub reduction mechanism of a four-planetary gear train according to claim 1, wherein: a first positioning hole used for being assembled and connected with one end of the planet wheel is formed in the disc body, and a second positioning hole used for being assembled and connected with the other end of the planet wheel is formed in the cover body.
3. The hub reduction mechanism of a four-planetary gear train according to claim 1, wherein: the cover body is of a cylindrical structure, a first assembling groove and a second assembling groove which are formed in the cover body are communicated, and an opening part communicated with the first assembling groove is formed in the side wall of the cover body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020897340.XU CN212657186U (en) | 2020-05-22 | 2020-05-22 | Hub reduction mechanism of four-planet gear train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020897340.XU CN212657186U (en) | 2020-05-22 | 2020-05-22 | Hub reduction mechanism of four-planet gear train |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212657186U true CN212657186U (en) | 2021-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020897340.XU Active CN212657186U (en) | 2020-05-22 | 2020-05-22 | Hub reduction mechanism of four-planet gear train |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212657186U (en) |
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2020
- 2020-05-22 CN CN202020897340.XU patent/CN212657186U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211008 Address after: 246000 No. 309, Yingbin West Road, economic development zone, Anqing City, Anhui Province Patentee after: Anqing Heli axle Co.,Ltd. Address before: No. 309, Yingbin Avenue, Anqing Economic Development Zone, Anhui Province, 246700 Patentee before: ANHUI HELI Co.,Ltd. ANQING AXLE FACTORY |
|
| TR01 | Transfer of patent right |