CN211398444U - Planetary speed reducing mechanism and speed reducing box - Google Patents
Planetary speed reducing mechanism and speed reducing box Download PDFInfo
- Publication number
- CN211398444U CN211398444U CN201922433479.9U CN201922433479U CN211398444U CN 211398444 U CN211398444 U CN 211398444U CN 201922433479 U CN201922433479 U CN 201922433479U CN 211398444 U CN211398444 U CN 211398444U
- Authority
- CN
- China
- Prior art keywords
- planetary
- wheel shaft
- gear
- planetary gear
- reduction mechanism
- 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.)
- Active
Links
Images
Abstract
The utility model aims at providing a can reduce frictional force between planetary gear and shaft, can improve planetary gear and shaft torque transmission effect's planet reduction gears and reducing gear box. In order to achieve the above purpose, the utility model adopts the following technical scheme: a planetary reduction mechanism comprises a planetary frame plate, wherein a wheel shaft is fixed on the planetary frame plate, a planetary gear is sleeved on the wheel shaft, a plurality of roller pins are distributed between a central hole of the planetary gear and the outer wall of the wheel shaft and are annularly arranged by taking the axis of the wheel shaft as a center, the roller pins are directly contacted with the inner wall of the central hole of the planetary gear and the outer wall of the wheel shaft, and the axes of the roller pins are parallel to the axis of the wheel shaft.
Description
Technical Field
The utility model relates to a reducing gear box, concretely relates to planet reducing gear box.
Background
The requirements for the bearing capacity, reliability, weight, volume and the like of the speed reducer are increasingly improved in the industry. The planetary reduction mechanism is an important component of the planetary gear box, and comprises a planetary carrier, a wheel shaft, a planetary gear, a sun gear and other parts, wherein the wheel shaft is pressed on a planetary carrier plate of the planetary carrier, and the planetary gear drives the wheel shaft to rotate when rotating along an inner gear ring or the sun gear, so that the planetary carrier is driven to rotate. The planetary gear is sleeved on the wheel shaft and is in clearance fit with the wheel shaft, the friction force between the planetary gear and the wheel shaft is large, the abrasion between the planetary gear and the wheel shaft is large, the torque transmission effect between the planetary gear and the wheel shaft is low, the reliability of the whole planetary speed reducing mechanism is poor, and the application range is small.
Therefore, a bearing is arranged between the wheel shaft of some planetary reduction mechanisms and the central hole of the planetary gear, but the arrangement of the bearing needs to make the wheel shaft thicker and the planetary gear have larger inner diameter, the strength of the planetary gear can be reduced, and the weight of the reduction gearbox can be increased due to the arrangement of the bearing.
Disclosure of Invention
The utility model aims at providing a can reduce frictional force between planetary gear and shaft, can improve the planet reduction gears of moment of torsion transmission effect between planetary gear and shaft.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a planetary reduction mechanism comprises a planetary frame plate, wherein a wheel shaft is fixed on the planetary frame plate, a planetary gear is sleeved on the wheel shaft, a plurality of roller pins are distributed between a central hole of the planetary gear and the outer wall of the wheel shaft and are annularly arranged at intervals by taking the axis of the wheel shaft as the center, the roller pins are directly contacted with the inner wall of the central hole of the planetary gear and the outer wall of the wheel shaft, and the axes of the roller pins and the axis of the wheel shaft are arranged in parallel.
The utility model arranges the roller pin between the wheel shaft and the planetary gear, the width of the roller pin is smaller than that of the bearing, the existing thin wheel shaft can be adopted, and the inner diameter of the central hole of the planetary gear can be made smaller, so that the strength of the planetary gear is higher; the planetary gear drives the wheel shaft to rotate through the needle roller, and the friction force between the planetary gear and the needle roller is smaller, so that the stability and the reliability of the planetary speed reducing mechanism are improved, the service life of the planetary speed reducing mechanism can be prolonged, and the torque transmission effect between the planetary gear and the wheel shaft is ensured; and the weight of the needle roller is lower than that of the bearing, so that the weight of the reduction gearbox can be reduced, and the production cost of the reduction gearbox can be reduced.
Preferably, the plurality of rolling needles are uniformly arranged at intervals in an annular shape, and two adjacent rolling needles are contacted with each other. Compared with the bearing arranged between the wheel shaft and the planetary gear, the contact surface among the planetary gear, the needle roller and the wheel shaft is larger, so that the torque transmission effect is better.
Preferably, the axial length of the needle roller is smaller than the axial length of the planetary gear. The roller pins can be completely pressed into the planetary gear, so that the contact between two ends of the roller pins and parts and the friction are avoided.
Preferably, at least one side of the two axial sides of the planet carrier plate is provided with a gasket, and the axial surface of the planet gear is attached to the gasket. The surface of the gasket can be made very smooth, so that the friction force at the axial surface of the planetary gear can be reduced, the service life of the planetary speed reducing mechanism is prolonged, and the transmission efficiency between the planetary gear and the wheel shaft is improved.
Preferably, the gasket comprises a first gasket positioned on one axial side of the planetary gear and a second gasket positioned on the other axial side of the planetary gear, the first gasket is sleeved on the wheel shaft and limited between the planetary gear and the planetary frame plate, and the second gasket is fixed with the sun gear.
Preferably, the second washer has a hole having a shape similar to the outer edge of the sun gear.
The utility model also discloses a lighter, the better, the longer reducing gear box of life of stability of weight, the reducing gear box includes above-mentioned planet reduction gears.
The utility model has the advantages of can reduce frictional force between planetary gear and shaft, can improve moment of torsion transmission effect between planetary gear and shaft, just the utility model discloses still have and prolong reducing gear box life, enable the lighter advantage of reducing gear box weight.
Drawings
FIG. 1 is a schematic structural view of example 1;
fig. 2 is a schematic structural diagram of embodiment 2.
Detailed Description
The invention will be further described with reference to the drawings and the specific embodiments.
Example 1
A planetary reduction mechanism comprises a planetary frame plate 1, wherein an axle 2 is fixed on the planetary frame plate 1, a planetary gear 3 is sleeved on the axle 2, a plurality of roller pins 4 are distributed between a central hole of the planetary gear 3 and the outer wall of the axle 2, the plurality of roller pins 4 are annularly arranged at intervals by taking the axis of the axle 2 as the center, the roller pins 4 are directly contacted with the inner wall of the central hole of the planetary gear 3 and the outer wall of the axle 2, and the axes of the roller pins 4 are parallel to the axis of the axle 2. The plurality of needle rollers 4 are uniformly arranged in an annular shape at intervals, two adjacent needle rollers 4 are in mutual contact, and the axial length of each needle roller 4 is smaller than that of the planetary gear 3.
Wherein, the axial side of the planet gear 3 is provided with a first gasket 5, and the first gasket 5 is sleeved on the wheel shaft 2 and limited between the planet gear 3 and the planet carrier plate 1. Wherein, the first gasket is a wear-resistant gasket with a polished smooth surface.
Example 2
The embodiment discloses a reduction gearbox with the planetary reduction mechanism, which comprises a box body 5, wherein the planetary reduction mechanism is fixed in the box body. The present embodiment differs from embodiment 1 in that: a first gasket is not arranged between the planet carrier plate and the planet gear 3, and a second gasket 7 is arranged on the sun gear 6 fixed with the planet carrier plate. The second washer 7 has a shaped hole of the same shape as the outer edge of the sun gear 6.
The utility model discloses a planet carrier plate, planetary gear, sun gear can adopt arbitrary one current structure, and the setting relation between planet reduction gears and reducing gear box also can adopt arbitrary one current structure.
The utility model has the advantages of can reduce frictional force between planetary gear and shaft, can improve moment of torsion transmission effect between planetary gear and shaft, just the utility model discloses still have and prolong reducing gear box life, enable the lighter advantage of reducing gear box weight.
Claims (7)
1. A planetary reduction mechanism is characterized by comprising a planetary frame plate, wherein a wheel shaft is fixed on the planetary frame plate, a planetary gear is sleeved on the wheel shaft, a plurality of roller pins are distributed between a central hole of the planetary gear and the outer wall of the wheel shaft and are annularly arranged at intervals by taking the axis of the wheel shaft as the center, the roller pins are directly contacted with the inner wall of the central hole of the planetary gear and the outer wall of the wheel shaft, and the axes of the roller pins are parallel to the axis of the wheel shaft.
2. A planetary reduction mechanism according to claim 1, wherein the plurality of needles are uniformly spaced in a circular shape, and adjacent needles are in contact with each other.
3. A planetary reduction mechanism according to claim 1, wherein the axial length of the needle roller is smaller than the axial length of the planetary gear.
4. A planetary reduction mechanism according to claim 1, wherein the carrier plate is provided with a spacer on at least one of its axial sides, and the axial face of the planet gear abuts against the spacer.
5. A planetary reduction mechanism according to claim 4, wherein the spacers include a first spacer on one axial side of the planet gear and a second spacer on the other axial side of the planet gear, the first spacer fitting over the axle and being constrained between the planet gear and the planet carrier, the second spacer being fixed to the sun gear.
6. A planetary reduction mechanism according to claim 5, wherein the second spacer has a shaped hole having the same shape as the outer periphery of the sun gear.
7. A reduction gearbox having a planetary reduction mechanism as claimed in any one of claims 1 to 6, characterised by comprising a casing in which the planetary reduction mechanism is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922433479.9U CN211398444U (en) | 2019-12-30 | 2019-12-30 | Planetary speed reducing mechanism and speed reducing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922433479.9U CN211398444U (en) | 2019-12-30 | 2019-12-30 | Planetary speed reducing mechanism and speed reducing box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211398444U true CN211398444U (en) | 2020-09-01 |
Family
ID=72231600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922433479.9U Active CN211398444U (en) | 2019-12-30 | 2019-12-30 | Planetary speed reducing mechanism and speed reducing box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211398444U (en) |
-
2019
- 2019-12-30 CN CN201922433479.9U patent/CN211398444U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205639286U (en) | Planet pulls transmission speed reduction bearing | |
| CN105570410A (en) | Multi-line planetary traction and transmission type speed reducing bearing | |
| CN202914641U (en) | Eccentric swing speed reducing device | |
| CN101749411A (en) | Planet carrier of cycloidal needle wheel decelerator | |
| CN211398444U (en) | Planetary speed reducing mechanism and speed reducing box | |
| CN111005986A (en) | Planetary speed reducing mechanism and speed reducing box | |
| CN102287489A (en) | Small tooth difference roller engagement transmission mechanism and speed reducer thereof | |
| CN203272760U (en) | Double-row planetary hinge pin uniform loading structure | |
| CN210770053U (en) | Cycloidal pin gear speed reducing mechanism | |
| CN103527717B (en) | A kind of compound planetary row structure adapting to high speed conditions | |
| CN110374988B (en) | Simple cycloid speed reducing bearing with strong load capacity | |
| CN207975193U (en) | Reducer structure and robot with it | |
| CN102494111A (en) | Isolator belt pulley | |
| CN206845830U (en) | automobile differential, bearing combined structure | |
| CN208417222U (en) | A kind of gear shaft | |
| CN206530654U (en) | Efficient reduction gear on starter | |
| CN205315657U (en) | Bearing gear drive structure | |
| CN111322354A (en) | Planetary roller gear reducer and implementation method thereof | |
| CN216111998U (en) | Planetary transmission device, transmission and vehicle | |
| CN215487579U (en) | Oil storage type large-torque planetary reduction gear shaft | |
| CN215214585U (en) | Planet carrier assembly | |
| CN216589832U (en) | Novel small-tooth-difference speed reducer for robot | |
| CN204175790U (en) | A kind of ball spline pair | |
| CN203239760U (en) | Shaft sleeve of rolling mill | |
| CN220891049U (en) | Planetary gear transmission structure and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |