CN212480089U - Sun gear axial limiting structure and planetary gear mechanism - Google Patents
Sun gear axial limiting structure and planetary gear mechanism Download PDFInfo
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- CN212480089U CN212480089U CN202021290257.2U CN202021290257U CN212480089U CN 212480089 U CN212480089 U CN 212480089U CN 202021290257 U CN202021290257 U CN 202021290257U CN 212480089 U CN212480089 U CN 212480089U
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Abstract
The application discloses a sun gear axial limiting structure and a planetary gear mechanism, and relates to the technical field of gear transmission equipment, wherein the sun gear axial limiting structure comprises a sun gear, a connecting piece and a baffle ring, wherein the sun gear is provided with an outer surface, an annular groove is formed in the outer surface, the connecting piece is in transmission connection with the sun gear, the baffle ring is fixed on the connecting piece and is arranged in the annular groove, and the width of the annular groove is greater than the thickness of the baffle ring; when power is applied to the connecting piece, the connecting piece transmits the power to the sun wheel, so that the sun wheel is driven to rotate, and the rotating speed of the baffle ring is the same as that of the sun wheel. Therefore, the purpose of axial limiting of the sun wheel can be achieved, the machining amount of the sun wheel is reduced, machining cost is reduced, the requirement for limiting parts is lowered, and the risk of failure of the limiting parts is reduced.
Description
Technical Field
The application relates to the technical field of gear transmission equipment, in particular to a sun gear axial limiting structure and a planetary gear mechanism.
Background
Because of the load sharing requirement, the sun gear is often set to float in the planetary transmission. In the prior art, the sun gear has its axial float range limited by the contact of the ball top with the top block.
However, this configuration causes relative rotation between the ball top and the top block and point contact between the ball top and the top block, resulting in a ball top that is susceptible to wear failure and drive train damage.
SUMMERY OF THE UTILITY MODEL
An object of this application is to provide a sun gear axial limit structure and planetary gear mechanism, its can utilize keeping off being connected of ring and sun gear, reach the spacing effect of sun gear axial.
The embodiment of the application is realized as follows:
the utility model provides a sun gear axial limit structure, includes sun gear, connecting piece and fender ring, wherein, the sun gear has the surface, be equipped with the annular on the surface, the connecting piece with the sun gear transmission is connected, is used for the drive the sun gear rotates, it fixes to keep off the ring on the connecting piece, and locate in the annular.
In one embodiment, the sun gear has a first tooth, and the connecting member has a third tooth engaged with the first tooth.
In one embodiment, the connecting member has a side surface, the side surface is provided with a groove, and the third tooth is arranged on the inner surface of the groove.
In one embodiment, the width of the ring groove is greater than the thickness of the baffle ring.
In one embodiment, the baffle ring has a first face, a second face and a third face, the first face is parallel to the second face, and the second face is parallel to the third face;
the first face is in contact with the side surface; the second surface and the third surface are arranged in the ring groove.
In one embodiment, the first surface is provided with a counter bore, and a bolt is arranged in the counter bore; a threaded hole is formed in the side surface of the connecting piece; the bolt is connected with the connecting piece through a threaded hole.
In one embodiment, the plurality of threaded holes are uniformly distributed on the side surface along the circumferential direction; the counter sink is equipped with a plurality ofly, along circumferencial direction evenly distributed on the first face.
In one embodiment, the retaining ring is formed of two half rings.
A planetary gear mechanism comprises a sun gear axial limiting structure, a planet carrier, a planet gear and an inner gear ring; the axial limiting structure of the sun gear is the axial limiting structure of the sun gear; the planet gear is fixed on the planet carrier through a planet shaft and is meshed with the sun gear; and the inner gear ring is meshed with the planet gear.
In one embodiment, the sun gear has a second tooth, the planet gear has a fourth tooth, and the fourth tooth is meshed with the second tooth; the inner gear ring is provided with fifth teeth, and the fifth teeth are meshed with the fourth teeth.
Compared with the prior art, the beneficial effect of this application is:
the axial limiting structure of the sun gear only needs to open the annular groove on the sun gear, so that the machining amount of the sun gear is reduced, and the machining cost is reduced.
The utility model provides a sun gear axial limit structure, it can make spacing part and sun gear synchronous rotation, and the contact between spacing part and the sun gear is the face contact. Therefore, the failure risk of the axial limiting structure of the sun gear can be reduced, and the continuous working condition of the planetary gear mechanism is adapted.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural view of a planetary gear mechanism according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a sun gear axial limiting structure according to an embodiment of the present application.
Fig. 3 is an enlarged view of a portion a of fig. 2 according to an embodiment of the present application.
Fig. 4 is a schematic structural diagram of a retainer ring according to an embodiment of the present application.
Icon: 1-a planetary gear mechanism; 2-axial limit structure of the sun gear; 100-a connector; a 110-side surface; 120-a threaded hole; 130-third teeth; 140-a groove; 200-sun gear; 210-an outer surface; 220-ring groove; 221-a first inner surface; 222-a second inner surface; 230-a first tooth; 240-second tooth; 300-baffle ring; 310-a first half-ring; 320-a second half ring; 330-counter sink; 340-a first side; 350-second side; 360-a third side; 400-bolt; 500-a planet wheel; 510-fourth tooth; 520-planet axis; 600-inner gear ring; 610-fifth tooth; 700-planet carrier.
Detailed Description
The terms "first," "second," "third," and the like are used for descriptive purposes only and not for purposes of indicating or implying relative importance, and do not denote any order or order.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it should be noted that the terms "inside", "outside", "left", "right", "upper", "lower", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally arranged when products of the application are used, and are used only for convenience in describing the application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application.
In the description of the present application, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.
The technical solution of the present application will be clearly and completely described below with reference to the accompanying drawings.
Please refer to fig. 1, which is a schematic structural diagram of a planetary gear mechanism 1 according to an embodiment of the present application. The planetary gear mechanism 1 includes a sun gear axial limiting structure 2, a planet gear 500, an inner gear ring 600, and a planet carrier 700.
The sun gear axial limiting structure 2 comprises a connecting piece 100, a sun gear 200 and a baffle ring 300, wherein the connecting piece 100 is provided with a side surface 110, a groove 140 is formed in the side surface 110, and a third tooth 130 is arranged in the groove 140; the sun gear 200 has an outer surface 210, wherein the outer surface 210 is provided with a ring groove 220, a first tooth 230 and a second tooth 240; planet 500 has fourth tooth 510 and planet shaft 520, and annulus 600 has fifth tooth 610.
The connecting piece 100 is connected with a power output source, and the power output source connection can be a direct output source such as a motor and a motor, and can also be an indirect transmission output source, namely an output device for transmitting torque in a rotating mode; further, the connecting member 100 is engaged with the first tooth 230 of the sun gear 200 through the third tooth 130, so as to be in transmission connection with the sun gear 200, and transmits power to the sun gear 200, so as to drive the sun gear 200 to rotate; the first teeth 230 are crowned teeth, and have the advantages of strong bearing capacity, improved tooth surface friction and wear conditions, reduced noise, long maintenance period and convenient disassembly; the connecting member 100 may be a propeller shaft or a planet carrier.
Sun gear 200 is engaged with fourth tooth 510 of planet gear 500 through second tooth 240, so as to be in transmission connection with planet gear 500, and then power is transmitted to planet gear 500, so that planet gear 500 is driven to rotate.
Planet gear 500 is meshed with fifth tooth 610 of inner gear ring 600 through fourth tooth 510; the planet gears 500 are fixed to a planet carrier 700 by planet shafts 520.
The baffle ring 300 is fixed with the connecting piece 100, the baffle ring 300 is inserted into the annular groove 220, and the sun gear 200 is in transmission connection with the connecting piece 100, so that the rotating speed of the baffle ring 300 is the same as that of the sun gear 200, and the failure risk of the sun gear axial limiting structure 2 is reduced; since the width of ring groove 220 is greater than the width of retainer ring 300, in operation, sun gear 200 has a limited axial displacement, which is the axial float range of sun gear 200.
Please refer to fig. 2, which is a schematic structural diagram of a sun gear axial limiting structure 2 according to an embodiment of the present application. The sun gear axial limiting structure 2 comprises a connecting piece 100, a sun gear 200, a baffle ring 300 and a bolt 400, wherein the connecting piece 100 is provided with a side surface 110, and a threaded hole 120 is formed in the side surface 110;
The number of the threaded holes 120 is multiple, the plurality of threaded holes 120 are uniformly distributed along the circumferential direction, and in the embodiment, 6 threaded holes 120 are provided; the connecting member 100 may be a propeller shaft or a planet carrier.
The baffle ring 300 has a first surface 340, a plurality of counter bores 330 are disposed on the first surface 340, the plurality of counter bores 330 are uniformly distributed along the circumferential direction, in this embodiment, there are 6 counter bores 330.
In an operation, a plurality of bolts 400 are disposed in the counter bores 330 of the retainer ring 300, and the bolts 400 are threadedly coupled to the threaded holes 120 of the connector 100, such that the first surface 340 of the retainer ring 300 is in close contact with the side surface 110 of the connector 100, thereby fixing the retainer ring 300 and the connector 100 together.
Fig. 3 is a schematic structural diagram of an enlarged view of a portion a of fig. 2 according to an embodiment of the present application. The sun gear 200 has an outer surface 210, the outer surface 210 is provided with a ring groove 220, the ring groove 220 has a first inner surface 221 and a second inner surface 222, the baffle ring 300 has a first surface 340, a second surface 350 and a third surface 360; the first surface is parallel to the second surface, and the second surface is parallel to the third surface;
the connecting piece is provided with a side surface, and a third surface is in surface contact with the side surface;
the retainer ring 300 is inserted into the ring groove 220 to be coupled with the sun gear 200, and the width of the ring groove 220 is greater than the thickness of the retainer ring 300.
In one operation, the connection between the retainer ring 300 and the sun gear 200 has two working conditions:
the second face 350 of the retainer ring 300 contacts the first inner surface 221 of the ring groove 220;
the third face 360 of the retainer ring 300 contacts the second inner surface 222 of the ring groove 220;
since the width of the ring groove 220 is greater than the thickness of the baffle ring 300, the two working conditions do not exist simultaneously, so that a gap exists between the baffle ring 300 and the ring groove 220, and the size of the gap between the baffle ring 300 and the ring groove 220 is the axial floating range of the sun gear 200.
In this application sun gear 200 only need open an annular 220 on surface 210, has reduced sun gear 200's processingquantity, has reduced the processing cost, and in above-mentioned two kinds of operating modes the contact be the face contact, so this application has reduced the requirement that keeps off ring 300 promptly to stop part, has reduced the damage risk that keeps off ring 300.
Fig. 4 is a schematic structural diagram of a retainer ring 300 according to an embodiment of the present disclosure. The baffle ring 300 has a first surface 340, wherein the first surface 340 is provided with a plurality of countersunk holes 330, and the plurality of countersunk holes 330 are uniformly distributed along the circumferential direction.
The baffle ring 300 is composed of a first half ring 310 and a second half ring 320 which are split along the central line, and in actual operation, the structure is convenient to install and beneficial to reducing the difficulty of installation of operators.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The utility model provides a sun gear is to limit structure, its characterized in that includes:
the sun gear is provided with an outer surface, and a ring groove is formed in the outer surface;
the connecting piece is in transmission connection with the sun wheel and is used for driving the sun wheel to rotate; and
and the baffle ring is fixed on the connecting piece and is arranged in the annular groove.
2. The sun gear axial limit structure according to claim 1, wherein: the sun gear is provided with first teeth, the connecting piece is provided with third teeth, and the third teeth are meshed with the first teeth.
3. The sun gear axial limit structure according to claim 2, wherein: the connecting piece is provided with a side surface, a groove is formed in the side surface, and the third teeth are arranged on the inner surface of the groove.
4. The sun gear axial limiting structure according to claim 3, wherein: the baffle ring is provided with a first surface, a second surface and a third surface, wherein the first surface is parallel to the second surface, and the second surface is parallel to the third surface;
the first face is in contact with the side surface; the second surface and the third surface are arranged in the ring groove.
5. The sun gear axial limit structure according to claim 4, wherein: a countersunk hole is formed in the first surface, and a bolt is arranged in the countersunk hole;
a threaded hole is formed in the side surface of the connecting piece; the bolt is connected with the connecting piece through a threaded hole.
6. The sun gear axial limit structure according to claim 5, wherein:
the threaded holes are uniformly distributed on the side surface along the circumferential direction;
the counter sink is equipped with a plurality ofly, along circumferencial direction evenly distributed on the first face.
7. The sun gear axial limit structure according to claim 1, wherein: the baffle ring is composed of two semi-rings.
8. The sun gear axial limit structure according to any one of claims 1 to 7, wherein: the width of the ring groove is larger than the thickness of the baffle ring.
9. A planetary gear mechanism, comprising:
a sun gear axial limiting structure according to any one of claims 1 to 8;
a planet carrier;
the planet gear is fixed on the planet carrier through a planet shaft and is meshed with the sun gear; and
and the inner gear ring is meshed with the planet gear.
10. The planetary gear mechanism as in claim 9, wherein:
the sun gear has second teeth;
the planet gear is provided with a fourth tooth, and the fourth tooth is meshed with the second tooth;
the inner gear ring is provided with fifth teeth, and the fifth teeth are meshed with the fourth teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021290257.2U CN212480089U (en) | 2020-07-02 | 2020-07-02 | Sun gear axial limiting structure and planetary gear mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021290257.2U CN212480089U (en) | 2020-07-02 | 2020-07-02 | Sun gear axial limiting structure and planetary gear mechanism |
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| Publication Number | Publication Date |
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| CN212480089U true CN212480089U (en) | 2021-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021290257.2U Active CN212480089U (en) | 2020-07-02 | 2020-07-02 | Sun gear axial limiting structure and planetary gear mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113483083A (en) * | 2021-07-22 | 2021-10-08 | 中国船舶重工集团公司第七0三研究所 | Sun gear floating structure for high-speed planetary transmission |
-
2020
- 2020-07-02 CN CN202021290257.2U patent/CN212480089U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113483083A (en) * | 2021-07-22 | 2021-10-08 | 中国船舶重工集团公司第七0三研究所 | Sun gear floating structure for high-speed planetary transmission |
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