CN217951187U

CN217951187U - Pin shaft limiting structure, planet carrier assembly and gear box

Info

Publication number: CN217951187U
Application number: CN202222337187.7U
Authority: CN
Inventors: 邱模强; 杜树军; 贺欢; 候海涛
Original assignee: Nanjing High Speed and Accurate Gear Group Co Ltd
Current assignee: Nanjing High Speed and Accurate Gear Group Co Ltd
Priority date: 2022-09-02
Filing date: 2022-09-02
Publication date: 2022-12-02
Anticipated expiration: 2032-09-02

Abstract

The utility model relates to a gear box technical field discloses a round pin axle limit structure, planet carrier assembly and gear box. Wherein round pin axle limit structure includes the planet carrier assembly, and the planet carrier assembly includes round pin axle limit structure, and round pin axle limit structure includes planet carrier, round pin axle, first retaining ring and second retaining ring. The planet carrier is provided with an assembling hole; the pin shaft is an optical axis and penetrates through the assembling hole; the first check ring is arranged on the planet carrier and used for stopping the first end of the optical axis; the second stop ring is mounted on the planet carrier and used for stopping the second end of the optical axis. This round pin axle limit structure's round pin axle is the optical axis structure, has increased the commonality of round pin axle by a wide margin, as long as the diameter is the same, and the planet carrier span can all share the round pin axle in certain extent, has improved material utilization by a wide margin, has reduced purchase and processing cost, and has improved the commonality of round pin axle by a wide margin, has reduced the round pin axle model, reduces administrative cost.

Description

Pin shaft limiting structure, planet carrier assembly and gear box

Technical Field

The utility model relates to a gear box technical field especially relates to a round pin axle limit structure, planet carrier assembly and gear box.

Background

At present, the axial direction of a pin shaft of a double-arm planet carrier needs to be limited in a two-way mode, and a traditional planet carrier generally adopts a step and check ring positioning mode. For example, the pin shaft is a stepped shaft, and the stepped surface is abutted to the planet carrier, so that one end of the pin shaft is fixed. Or the pin shaft is provided with an installation groove, a check ring is installed in the installation groove, and the check ring abuts against the end part of the planet carrier to realize the end fixing of the pin shaft. However, the pin shafts have complex structures, and have structures such as steps, flanges or retainer grooves, and the applicable planet carrier can be unified only by completely consistent structures and sizes, so that on one hand, the material utilization rate is low, and the purchase and manufacturing costs are high; on the other hand, the pin shaft has high requirements on roughness and precision, and meanwhile, in order to meet the requirements of different types of planet carriers, the pin shaft has multiple types, the single product has poor scale effect, and the manufacturing and management costs are high.

Based on this, a pin shaft limiting structure, a planet carrier assembly and a gear box are needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

Based on it, an object of the utility model is to provide a round pin axle limit structure, planet carrier assembly and gear box has increased the commonality and the material utilization ratio of round pin axle by a wide margin, has reduced purchase and processing cost, and has improved the commonality of round pin axle by a wide margin, has reduced the round pin axle model, reduces administrative cost.

In order to achieve the purpose, the utility model adopts the following technical proposal:

in a first aspect, a pin limiting structure is provided, including:

the planet carrier is provided with an assembling hole;

the pin shaft is an optical axis and penetrates through the assembling hole;

the first retainer ring is arranged on the planet carrier and used for stopping the first end of the optical axis;

and the second retainer ring is arranged on the planet carrier and used for stopping the second end of the optical axis.

As an optimal technical scheme of the pin shaft limiting structure, the pin shafts and the assembling holes are in one-to-one correspondence.

As an optimal technical scheme of the pin shaft limiting structure, a first groove is formed in the assembly hole, and the first check ring is installed in the first groove.

As an optimal technical scheme of the pin shaft limiting structure, a second groove is formed in the assembling hole, and the second retaining ring is installed in the second groove.

As an optimal technical scheme of the pin shaft limiting structure, a boss is arranged on one side, close to the second end of the pin shaft, of the planet carrier, a third groove is formed in the outer wall of the boss, the second retaining ring is installed in the third groove, and the second retaining ring can retain all the second ends of the pin shaft.

As a preferred technical proposal of the pin shaft limiting structure, an annular clapboard is arranged between the second retainer ring and the second end of the pin shaft, the annular clapboard is sleeved on the lug boss, the outer diameter of the annular clapboard is larger than that of the second retainer ring,

in a second aspect, a planet carrier assembly is provided, which includes the pin limiting structure of any one of the above items.

As a preferred technical scheme of the planet carrier assembly, the planet carrier assembly further comprises a planet gear, and the planet gear is rotatably arranged on the pin shaft.

In a third aspect, a gearbox is provided, comprising the planet carrier assembly as described above.

The beneficial effects of the utility model are that:

the utility model provides a round pin axle limit structure, planet carrier assembly and gear box, wherein, the round pin axle is the optical axis, and the pilot hole of planet carrier is worn to locate by the round pin axle, then installs first retaining ring and second retaining ring in the planet carrier respectively to the both ends of backstop optical axis have realized that the round pin axle is fixed in on the planet carrier. This round pin axle limit structure's round pin axle is the optical axis structure, has increased the commonality of round pin axle by a wide margin, as long as the diameter is the same, and the planet carrier span can all share the round pin axle in certain extent, has improved material utilization by a wide margin, has reduced purchase and processing cost, and has improved the commonality of round pin axle by a wide margin, has reduced the round pin axle model, reduces administrative cost.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is one of cross-sectional views of a pin limiting structure according to an embodiment of the present invention;

fig. 2 is a second cross-sectional view of the pin limiting structure according to the embodiment of the present invention;

fig. 3 is a side view of a pin limiting structure according to an embodiment of the present invention;

fig. 4 is a third cross-sectional view of the pin limiting structure according to the embodiment of the present invention.

The figures are labeled as follows:

1. a planet carrier; 11. an assembly hole; 12. a boss;

2. a pin shaft; 3. a first retainer ring; 4. a second retainer ring; 5. an annular partition.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1 to 4, the present embodiment provides a gear box, which includes a planet carrier assembly, where the planet carrier assembly includes a pin shaft limiting structure, and the pin shaft limiting structure includes a planet carrier 1, a pin shaft 2, a first retainer ring 3, and a second retainer ring 4. The planet carrier 1 is provided with an assembly hole 11; the pin shaft 2 is an optical axis, and the pin shaft 2 penetrates through the assembling hole 11; the first retainer ring 3 is arranged on the planet carrier 1 and used for stopping the first end of the optical axis; the second stop ring 4 is mounted on the planet carrier 1 and used for stopping the second end of the optical axis.

Wherein, round pin axle 2 is the optical axis, and round pin axle 2 wears to locate planet carrier 1 pilot hole 11, then installs first retaining ring 3 and second retaining ring 4 respectively in planet carrier 1 to the both ends of backstop optical axis have realized that round pin axle 2 is fixed in on planet carrier 1. This round pin axle limit structure's round pin axle 2 is the optical axis structure, has increased round pin axle 2's commonality by a wide margin, as long as the diameter is the same, and 1 span of planet carrier all can share round pin axle 2 in certain extent, has improved material utilization by a wide margin, has reduced purchase and processing cost, and has improved round pin axle 2's commonality by a wide margin, has reduced round pin axle 2 model, reduces administrative cost.

The planet carrier assembly further comprises a planet gear, and the planet gear is rotatably arranged on the pin shaft 2.

In this embodiment, the pin shafts 2 and the assembly holes 11 are multiple and correspond to each other one by one. A plurality of planetary gears can be installed on the plurality of pin shafts 2, and the planetary transmission requirements are met.

In this embodiment, as shown in fig. 1, when the length of the pin shaft 2 is smaller than the distance between the two ends of the assembling hole 11, a first groove is formed in the assembling hole 11, and the first retainer ring 3 is installed in the first groove. Still be provided with the second recess in the pilot hole 11, second backstop 4 is installed in the second recess to backstop round pin axle 2's both ends.

As shown in fig. 2 and 3, when the length of the pin shaft 2 is greater than the distance between the two ends of the assembly hole 11, a boss 12 is arranged on one side of the planet carrier 1 close to the second end of the pin shaft 2, a third groove is arranged on the outer wall of the boss 12, the second retainer 4 is arranged in the third groove, and the second retainer 4 can stop the second ends of all the pin shafts 2, so that the number of the second retainers 4 is reduced, and the material cost is reduced.

Further, as shown in fig. 4, when the pin shaft 2 is assembled, and the pin shaft 2 has an interval with the boss 12 of the planet carrier 1, an annular partition plate 5 is arranged between the second end of the second retaining ring 4 and the second end of the pin shaft 2, the boss 12 is sleeved with the annular partition plate 5, and the outer diameter of the annular partition plate 5 is greater than that of the second retaining ring 4, so that the second end of the second retaining ring 4, which is retained by the annular partition plate 5, is retained by the second retaining ring 2. The embodiment greatly increases the universality of the pin shaft 2, and as long as the diameters are the same, the span of the planet carrier 1 can share the pin shaft 2 within a certain range, so that the material utilization rate is greatly improved, and the universality of the pin shaft 2 is improved.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. The utility model provides a round pin axle limit structure which characterized in that includes:

the planet carrier (1) is provided with an assembling hole (11);

the pin shaft (2) is an optical axis, and the pin shaft (2) penetrates through the assembling hole (11);

the first retainer ring (3) is arranged on the planet carrier (1) and used for stopping the first end of the optical axis;

and the second retainer ring (4) is arranged on the planet carrier (1) and used for stopping the second end of the optical axis.

2. The pin shaft limiting structure according to claim 1, wherein the pin shafts (2) and the assembling holes (11) are provided in a plurality and correspond to each other one by one.

3. The pin limitation structure according to claim 1, wherein a first groove is formed in the assembly hole (11), and the first retainer ring (3) is mounted in the first groove.

4. The pin limitation structure according to claim 1, wherein a second groove is provided in the assembly hole (11), and the second retainer ring (4) is mounted in the second groove.

5. The pin shaft limiting structure according to claim 2, wherein a boss (12) is disposed on one side of the planet carrier (1) close to the second end of the pin shaft (2), a third groove is disposed on an outer wall of the boss (12), the second retainer ring (4) is mounted in the third groove, and the second retainer ring (4) can stop all the second ends of the pin shaft (2).

6. The pin shaft limiting structure according to claim 5, wherein an annular partition plate (5) is disposed between the second retaining ring (4) and the second end of the pin shaft (2), the boss (12) is sleeved with the annular partition plate (5), and an outer diameter of the annular partition plate (5) is greater than an outer diameter of the second retaining ring (4).

7. A planet carrier assembly comprising a pin retention structure according to any one of claims 1 to 6.

8. A planet carrier assembly according to claim 7, further comprising a planet gear, which is rotatably mounted to the pin (2).

9. A gearbox comprising a planet carrier assembly according to any of claims 7 and 8.