CN216742756U - Planet wheel lubricating structure of wheel-side speed reducer of drive axle of loader - Google Patents
Planet wheel lubricating structure of wheel-side speed reducer of drive axle of loader Download PDFInfo
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- CN216742756U CN216742756U CN202123118241.0U CN202123118241U CN216742756U CN 216742756 U CN216742756 U CN 216742756U CN 202123118241 U CN202123118241 U CN 202123118241U CN 216742756 U CN216742756 U CN 216742756U
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- planet wheel
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- oil hole
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Abstract
The utility model discloses a loader transaxle hub reduction gear planet wheel lubricating structure, which comprises a planet wheel carrier 1, a planet wheel shaft 2, a sun gear 3, a planet wheel 4, a planet wheel gasket 5, a roller pin 6, a steel ball 7 and an inner gear 8; a planet wheel 4 provided with a roller pin 6 is arranged at the open gear position of a planet wheel carrier 1 through a planet wheel shaft 2, and the planet wheel is engaged with an inner gear ring to form transmission; the planet wheel gaskets 5 are arranged at two ends of the planet wheel 4 assembly; a steel ball 7 is arranged at the end part, close to the planet wheel shaft 2, and the planet wheel shaft 2 is axially limited through the steel ball 7; the sun wheel 3 and the inner gear 8 are respectively meshed with the planet wheels 4; the planet wheel shaft 2 is provided with an axial lubricating oil hole 10, the radial middle part of the planet wheel shaft 2 is provided with a radial lubricating oil hole 9, and the axial lubricating oil hole 10 is communicated with the radial lubricating oil hole 9. The utility model discloses the fault rate is low, lubricated effectual, long service life, processing cost are low.
Description
Technical Field
The utility model relates to a loader transaxle wheel reduction gear technical field, concretely relates to loader transaxle wheel reduction gear planet wheel lubricating structure.
Background
The wheel-side reducer of the drive axle of the existing loader in China generally adopts an NGW structure, wherein an inner gear is fixed on an axle housing, a sun gear is used as a torque input part, a planet wheel is fixed on a planet wheel carrier by adopting a rolling needle and a planet wheel shaft, and the wheel carrier is a torque output component. Because the planet wheel hole kingpin lubrication principle of present transaxle hub reduction gear is to bore 3-phi 4.5's through-hole as the oilhole at planet wheel root equipartition and lubricate, this lubricating structure has following defect: firstly, the accuracy of the planet gear drilling position of 3-phi 4.5 is difficult to guarantee, the planet gear cannot be completely drilled to the middle part of the tooth root, and partial holes may be drilled to the round corner of the tooth root to influence the lubricating effect; secondly, the drilling at the root of the planet wheel can cause the stress concentration at the through hole, reduce the fatigue strength of the planet wheel and cause the failure rate to be increased.
Disclosure of Invention
The utility model aims at overcoming above-mentioned defect, providing a loader transaxle wheel reduction gear planet wheel lubricating structure that fault rate is low, lubricated effectual, long service life, processing cost are low.
In order to achieve the purpose, the planet wheel lubricating structure of the wheel-side reducer of the loader drive axle comprises a planet wheel carrier 1, a planet wheel shaft 2, a sun wheel 3, a planet wheel 4, a planet wheel gasket 5, a roller pin 6, a steel ball 7 and an inner gear 8; the planet wheel 4 provided with the roller pin 6 is arranged at the open gear position of the planet wheel carrier 1 through the planet wheel shaft 2, and the planet wheel is engaged with the inner gear ring to form transmission; the planet wheel gaskets 5 are arranged at two ends of the planet wheel 4 assembly; a steel ball 7 is arranged at the end part, close to the planet wheel shaft 2, and the planet wheel shaft 2 is axially limited through the steel ball 7; the sun wheel 3 and the inner gear 8 are respectively meshed with the planet wheels 4; the planet wheel shaft 2 is provided with an axial lubricating oil hole 10, the radial middle part of the planet wheel shaft 2 is provided with a radial lubricating oil hole 9, and the axial lubricating oil hole 10 is communicated with the radial lubricating oil hole 9.
The planet wheel lubricating structure of the loader drive axle hub reduction gear with the structure has the following technical characteristics and beneficial effects that the 3-phi 4.5 oil hole at the tooth root part of the planet wheel is eliminated, and the lubricating oil hole is formed in the middle of the axial direction and the radial direction of the planet wheel shaft:
1. gear oil can enter the roller pins through the lubricating oil holes of the planetary gear shafts, the lubricating requirements of the roller pins are guaranteed, fatigue fracture faults caused by stress concentration at the lubricating oil holes at the tooth roots of the planetary gears in the original structure are avoided, the fatigue strength of the planetary gears is improved, and the fault rate is reduced.
2. According to the structure, a planet gear lubricating structure is omitted, oil holes of planet gears 3-phi 4.5 are omitted, lubricating oil holes are formed in the axial and radial middle portions of a planet gear shaft, compared with gear drilling, shaft parts are easy and convenient to drill, the position degree requirement and the machining cost are low, the qualification rate is high, and the enterprise benefit can be improved.
3. The processing of the lubricating oil hole of the planet wheel shaft is simpler and more convenient, the processing cost is low, and the qualification rate of parts can be improved.
Drawings
Fig. 1 is the utility model discloses loader transaxle hub reduction gear planet wheel lubricating structure owner is cut out the schematic diagram.
Reference numerals: the lubricating device comprises a planet wheel carrier 1, a planet wheel shaft 2, a sun wheel 3, a planet wheel 4, a planet wheel gasket 5, a roller pin 6, a steel ball 7, an internal gear 8, a radial lubricating oil hole 9 and an axial lubricating oil hole 10.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 shows that the planet wheel lubrication structure of the wheel-side reducer of the loader drive axle of the present invention comprises a planet wheel carrier 1, a planet wheel shaft 2, a sun wheel 3, a planet wheel 4, a planet wheel gasket 5, a needle roller 6, a steel ball 7 and an internal gear 8, wherein the planet wheel shaft 2 is provided with an axial lubrication oil hole 10, the radial middle part of the planet wheel shaft 2 is provided with a radial lubrication oil hole 9, and the axial lubrication oil hole 10 is communicated with the radial lubrication oil hole 9; the assembling steps are as follows: assembling a needle roller 6 to a planet wheel 4; secondly, a planet wheel 4 assembly provided with a roller pin 6 is arranged in a planet wheel carrier 1 to be opened according to the position shown in the figure; thirdly, placing a planet wheel gasket 5 to the positions of the two ends of the planet wheel 4 assembly as shown in the figure; fourthly, the steel ball 7 is arranged in the position of the planet wheel shaft 2 as shown in the figure; fifthly, assembling the planetary gear shaft 2 assembly with the steel ball 7 to the position as shown in the figure; and sixthly, the assembly relation of the sun gear 3 and the inner gear 8 is shown in the attached drawing, and the sun gear, the inner gear and the inner gear are respectively meshed with the planet gears 4.
When the planetary gear set works, the sun gear 3 inputs power torque, and the planet gear carrier 1 outputs the power torque after speed reduction. Because the utility model discloses cancelled prior art and established the 3-phi 4.5 oilhole at 4 roots of teeth of star gear, changed into and directly set up the lubrication hole at the axial of planet wheel axle 2 and radial middle part, gear oil can enter into the kingpin through planet wheel axle lubrication hole, has guaranteed the lubricated requirement of kingpin.
The utility model discloses loader transaxle hub reduction gear planet wheel lubricating structure can stop among the prior art stress concentration that planet wheel 4 established in the lubricating oil hole department of root of tooth portion and cause fatigue fracture trouble, improves the fatigue strength of planet wheel, reduces the fault rate, compares the original structure simultaneously, and the lubricating oil hole processing of planet wheel axle 2 is more simple and convenient, can reduce the processing cost, improves the part qualification rate, finally improves the performance of enterprises.
Claims (1)
1. A planet wheel lubrication structure of a wheel-side reducer of a loader drive axle comprises a planet wheel carrier (1), a planet wheel shaft (2), a sun wheel (3), a planet wheel (4), a planet wheel gasket (5), a roller pin (6), a steel ball (7) and an inner gear (8); the planet wheel (4) provided with the roller pin (6) is arranged at the gear opening position of the planet wheel carrier (1) through a planet wheel shaft (2), and the planet wheel is engaged with the inner gear ring to form transmission; the planet wheel gasket (5) is arranged at two ends of the planet wheel (4) assembly; a steel ball (7) is arranged at the end part, close to the planet wheel shaft (2), and the planet wheel shaft (2) is axially limited through the steel ball (7); the sun gear (3) and the inner gear (8) are respectively meshed with the planet gear (4); the method is characterized in that: the planet wheel shaft (2) is provided with an axial lubricating oil hole (10), the radial middle part of the planet wheel shaft (2) is provided with a radial lubricating oil hole (9), and the axial lubricating oil hole (10) is communicated with the radial lubricating oil hole (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123118241.0U CN216742756U (en) | 2021-12-13 | 2021-12-13 | Planet wheel lubricating structure of wheel-side speed reducer of drive axle of loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123118241.0U CN216742756U (en) | 2021-12-13 | 2021-12-13 | Planet wheel lubricating structure of wheel-side speed reducer of drive axle of loader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216742756U true CN216742756U (en) | 2022-06-14 |
Family
ID=81932801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123118241.0U Active CN216742756U (en) | 2021-12-13 | 2021-12-13 | Planet wheel lubricating structure of wheel-side speed reducer of drive axle of loader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216742756U (en) |
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2021
- 2021-12-13 CN CN202123118241.0U patent/CN216742756U/en active Active
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