CN209067775U - A kind of epicyclic transmission mechanism for speed reducer - Google Patents
A kind of epicyclic transmission mechanism for speed reducer Download PDFInfo
- Publication number
- CN209067775U CN209067775U CN201821619964.4U CN201821619964U CN209067775U CN 209067775 U CN209067775 U CN 209067775U CN 201821619964 U CN201821619964 U CN 201821619964U CN 209067775 U CN209067775 U CN 209067775U
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- CN
- China
- Prior art keywords
- needle roller
- sun gear
- transmission mechanism
- speed reducer
- gear
- 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.)
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Abstract
The utility model relates to a kind of retarding devices.Purpose is to provide a kind of epicyclic transmission mechanism for speed reducer, which should have the characteristics that structure is simple, convenient for production, bearing capacity is high.Technical solution is: a kind of epicyclic transmission mechanism for speed reducer, the sun gear including inside and outside arrangement and gear ring and several planetary gears for being rotatably positioned in planet carrier and engaging with sun gear and gear ring；It is characterized by: the sun gear includes mandrel, mandrel outer circumference surface is equipped with circumferentially evenly distributed several first needle rollers；The gear ring includes annular outer ring, and outer ring inner peripheral surface is equipped with circumferentially evenly distributed several second needle rollers；The length direction of first needle roller and the second needle roller is each parallel to sun gear axis.
Description
Technical field
The utility model relates to a kind of retarding device, specifically a kind of planetary reducer.
Background technique
The inside of planetary reducer is equipped with a set of planetary gear transmission mechanism, including sun gear, the planetary gear successively engaged
And gear ring, it may be implemented to reduce revolving speed and increase output torque.Important component of the gear ring therein as transmission mechanism needs
It to be process by multiple working procedure, have the shortcomings that production cost is high, later maintenance is inconvenient, bearing capacity is also difficult to
It continues to lift up.
Utility model content
The purpose of the utility model is to overcome the deficiencies in above-mentioned background technique, provide a kind of planet biography for speed reducer
Motivation structure, the mechanism should have the characteristics that structure is simple, convenient for production, bearing capacity is high.
The technical solution of the utility model is:
A kind of epicyclic transmission mechanism for speed reducer, the sun gear including inside and outside arrangement are fixed with gear ring and rotationally
Several planetary gears that position is engaged in planet carrier and with sun gear and gear ring；It is characterized by: the sun gear includes mandrel,
Mandrel outer circumference surface is equipped with circumferentially evenly distributed several first needle rollers；The gear ring includes annular outer ring, outside
It encloses inner peripheral surface and is equipped with circumferentially evenly distributed several second needle rollers；The length of first needle roller and the second needle roller
Direction is spent each parallel to sun gear axis.
Roll sleeve is equipped on first needle roller and the second needle roller.
The first fixing groove for installing the first needle roller is formed on the outer circumference surface of the mandrel；The inner peripheral surface of the outer ring
On be formed with the second fixing groove for installing the second needle roller.
The tooth form of the planetary gear is one linear of three-arc, two circular arcs, one linear, two circular arc double wedge shapes or a circular arc
One linear.
The beneficial effects of the utility model are:
The utility model replaces traditional gear ring using needle roller roll sleeve structure, is not only simple in structure, produces and repair very
It is convenient, significantly reduce production cost, moreover it is possible to obtain bigger reduction ratio, further improve torque, can satisfy more
The use demand of occasion.
Detailed description of the invention
Fig. 1 is the schematic view of the front view of the utility model.
Fig. 2 is the schematic view of the front view of gear ring in the utility model.
Fig. 3 is the schematic view of the front view of sun gear in the utility model.
Fig. 4 is the left view structural representation of the utility model.
Specific embodiment
Below in conjunction with Figure of description, the utility model is described in further detail, but the utility model be not limited to
Lower embodiment.
As shown in Figure 1, a kind of epicyclic transmission mechanism for speed reducer, including sun gear, gear ring, planet carrier 5 and planet
Wheel 6.
The sun gear is located at gear ring inner and sun gear and gear ring are coaxially arranged.Several planetary gears pass through planet wheel spindle
6-1 is rotatably positioned in planet carrier and is evenly arranged in sun gear surrounding.Between the sun gear, planetary gear and gear ring
Successively engage.
The sun gear includes mandrel 1 and several first needle rollers 2.These first needle rollers are fixed on core with circumferential arrangement
On the outer circumference surface of axis.The first fixing groove 1-1 is formed on the circumferencial direction of the mandrel outer circumference surface, the first needle roller is mounted on
In one fixing groove (cell wall of the both ends of the first needle roller and the first fixing groove is fixed).
The gear ring includes outer ring 3 and several second needle rollers 4.These second needle rollers are fixed on outer ring with circumferential arrangement
Inner peripheral surface on.The second fixing groove 3-1 is formed on the circumferencial direction of the outer ring inner peripheral surface, it is solid that the second needle roller is mounted on second
(cell wall of the both ends of the second needle roller and the second fixing groove is fixed) is determined in slot.
The length direction of first needle roller and the second needle roller is each parallel to sun gear axis, and the first needle roller and second
Roll sleeve 7 is equipped on needle roller.Only individual needle roller need to be set in the speed reducer of large speed ratio, rolling can be used in the speed reducer of small speed ratio
Needle adds the combining form of roll sleeve.
The tooth form of the planetary gear can be one linear of three-arc, and it is convex to be also possible to two circular arcs, one linear, two circular arcs
One linear of tooth form or a circular arc.
The utility model is mounted on inside reducer shell, in which: input shaft is coaxially connected with mandrel, gear ring and output shaft
Coaxially connected and planet carrier is fixed with reducer shell, alternatively, input shaft is coaxially connected with mandrel, gear ring and reducer shell
Fixed and planet carrier and output shaft are coaxially connected.When operation, external impetus passes to input shaft, and input shaft is practical new by this
Type drives the rotation of output shaft low speed to output power, and is slowed down by gear ratio.
Since traditional gear and gear ring is substituted using needle roller roll sleeve structure in the utility model, thus by transmission mechanism
Sliding friction becomes rolling friction, greatly improves bearing capacity, obtains superior transmission performance, while also having production
Convenient, easy to maintain, reliable for operation advantage.
Claims (4)
1. a kind of epicyclic transmission mechanism for speed reducer, sun gear including inside and outside arrangement and gear ring and it is rotatably positioned
Several planetary gears (6) engaged in planet carrier (5) and with sun gear and gear ring；It is characterized by: the sun gear includes
Mandrel (1), mandrel outer circumference surface are equipped with circumferentially evenly distributed several first needle rollers (2)；The gear ring includes
Annular outer ring (3), outer ring inner peripheral surface are equipped with circumferentially evenly distributed several second needle rollers (4)；Described first
The length direction of needle roller and the second needle roller is each parallel to sun gear shaft.
2. a kind of epicyclic transmission mechanism for speed reducer according to claim 1, it is characterised in that: first needle roller
With roll sleeve (7) are equipped on the second needle roller.
3. a kind of epicyclic transmission mechanism for speed reducer according to claim 2, it is characterised in that: outside the mandrel
The first fixing groove (1-1) for installing the first needle roller is formed on periphery；It is formed on the inner peripheral surface of the outer ring for installing
The second fixing groove (3-1) of second needle roller.
4. a kind of epicyclic transmission mechanism for speed reducer according to claim 3, it is characterised in that: the planetary gear
Tooth form is one linear of three-arc, one linear of two circular arcs, one linear, two circular arc double wedge shapes or a circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821619964.4U CN209067775U (en) | 2018-09-30 | 2018-09-30 | A kind of epicyclic transmission mechanism for speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821619964.4U CN209067775U (en) | 2018-09-30 | 2018-09-30 | A kind of epicyclic transmission mechanism for speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209067775U true CN209067775U (en) | 2019-07-05 |
Family
ID=67094045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821619964.4U Active CN209067775U (en) | 2018-09-30 | 2018-09-30 | A kind of epicyclic transmission mechanism for speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209067775U (en) |
-
2018
- 2018-09-30 CN CN201821619964.4U patent/CN209067775U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |