Multi-section curve connection structure of power output shaft

Abstract

The utility model discloses a power output shaft multi-section curve connecting structure which comprises an output shaft body and a limiting structure, an annular shell is arranged on the outer wall of one end of the output shaft body in a sleeved mode, the limiting structure comprises a limiting ring, a first lantern ring and a second lantern ring, the limiting ring is arranged on the outer wall of the output shaft body in a sleeved mode and attached to one side of the annular shell, and the first lantern ring and the second lantern ring are connected in a sleeved mode. The first lantern ring is arranged on the outer wall of the annular shell in a sleeving mode, and the second lantern ring is connected with the outer wall of the first lantern ring. According to the multi-section curve connecting structure of the power output shaft, the first lantern ring is matched with the limiting ring, so that the second lantern ring can conveniently drive the first lantern ring to rotate, then the annular shell and the output shaft body are sequentially driven to rotate, stress concentration is eliminated through the multi-section curve structure, the torsion resistance of the shaft is improved, and the service life of the power output shaft is prolonged. Therefore, the fracture phenomenon caused by stress concentration is avoided, the installation is simple, and the practicability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to output shaft technical field, especially relates to a power output shaft multi -segment curve connecting structure. BACKGROUND

[0002] Output shaft, namely power output shaft. At present, all tractor enterprises, power output shaft adopts involute spline structure. The advantage of this structure is that there is a standard broach or hob, and it is easy to standardize manufacturing.

[0003] However, in actual work, the key tail part is prone to stress concentration, and the torque bearing capacity of the key tail part is greatly reduced, which is prone to break from the key tail. If the shaft is thickened, it will not pass through a shaft, so that assembly cannot be carried out.

[0004] Therefore, in order to solve the above technical problems, a power output shaft polygonal connecting structure with a key tail which is not easy to break is needed. SUMMARY

[0005] The utility model aims at at least in a certain extent solves one of the above technical problems in the technical field.

[0006] In order to achieve the above object, the utility model discloses a power output shaft multi -segment curve connecting structure, including: output shaft body and limit structure, wherein the outer wall of the one end of output shaft body is sleeved with annular shell, the limit structure includes limit ring, first ring and second ring, wherein the limit ring is sleeved on the outer wall of output shaft body, and is attached with one side of annular shell, the first ring is sleeved on the outer wall of annular shell, and the second ring is connected with the outer wall of first ring.

[0007] In addition, the power output shaft multi -segment curve connecting structure according to the utility model can also have the following additional technical features:

[0008] Further, the annular shell and the limit ring are fixedly connected with the output shaft body, and the first ring is gap matched with the annular shell, and the second ring is fixedly connected with the first ring.

[0009] Further, the outer wall of the annular shell and the inner wall of the first ring are polygonal respectively, and the number of sides of the annular shell and the first ring is equal.

[0010] Further, the outer wall of the second ring is provided with a plurality of annularly distributed first external splines.

[0011] Further, a connecting structure is arranged on the end of the output shaft body, the connecting structure comprises a first shaft, a connecting rod, a second shaft, a limiting shell and a connecting shaft, the first shaft, the connecting rod, the second shaft and the connecting shaft are sequentially arranged on the end of the output shaft body from front to back, the limiting shell is a shell with openings at both ends and a hollow inside, the limiting shell is sleeved on the connecting rod, and the first shaft and the second shaft are located in the two openings respectively.

[0012] Further, a polygonal shell is arranged on the outer wall of the connecting rod, and a polygonal groove is formed in the inner wall of the limiting shell and matched with the polygonal shell.

[0013] According to the multi-segment curve connecting structure of the power output shaft, the first sleeve ring is driven to rotate by the second sleeve ring through the cooperation between the first sleeve ring and the limiting ring, then the annular shell and the output shaft body are sequentially driven to rotate, stress concentration is eliminated through the multi-segment curve structure, the torsional resistance of the shaft is improved, the fracture phenomenon caused by stress concentration is avoided, and the multi-segment curve connecting structure is simple to install and has high practicability. BRIEF DESCRIPTION OF DRAWINGS

[0014] The above and / or additional aspects and advantages of the present utility model will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0015] Fig. 1 is a three-dimensional structure assembly schematic view of a multi-segment curve connecting structure of a power output shaft and a power assembly according to one embodiment of the present utility model;

[0016] Fig. 2 is a structure schematic view of a multi-segment curve connecting structure of a power output shaft according to one embodiment of the present utility model;

[0017] Fig. 3 is a structure schematic view of one end of an output shaft body of a multi-segment curve connecting structure of a power output shaft according to one embodiment of the present utility model;

[0018] Fig. 4 is a structure schematic view of a limiting structure of a multi-segment curve connecting structure of a power output shaft according to one embodiment of the present utility model;

[0019] Fig. 5 is a three-dimensional structure exploded schematic view of a connecting structure of a multi-segment curve connecting structure of a power output shaft according to one embodiment of the present utility model;

[0020] Fig. 6 is an enlarged structure schematic view of a local part A of a multi-segment curve connecting structure of a power output shaft according to one embodiment of the present utility model;

[0021] As shown in the figure:

[0022] 1, output shaft body; 11, annular shell; 12, connecting structure; 121, first section shaft; 122, connecting rod; 1221, polygonal shell; 123, second section shaft; 124, limiting shell; 1241, opening; 1242, polygonal groove; 125, connecting shaft; 2, limiting structure; 21, limiting ring; 22, first collar; 23, second collar; 231, first external spline. DETAILED DESCRIPTION

[0023] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0024] A power output shaft multi-segment curve connecting structure is described below according to an embodiment of the present application.

[0025] As Figs. 1 to 3 shown, the power output shaft multi-segment curve connecting structure according to an embodiment of the present application can include an output shaft body 1 and a limiting structure 2.

[0026] The output shaft body 1 has an annular shell 11 sleeved on the outer wall of one end.

[0027] It should be noted that the annular shell 11 is sleeved on the outer wall of the front end of the output shaft body 1, which facilitates the installation of the first collar 22 and the clamping of the first collar 22.

[0028] The output shaft body 1 has a connecting structure 12 at the end, and the connecting structure 12 includes a first section shaft 121, a connecting rod 122, a second section shaft 123, a limiting shell 124, and a connecting shaft 125.

[0029] The first section shaft 121, the connecting rod 122, the second section shaft 123, and the connecting shaft 125 are sequentially arranged from front to back on the end of the output shaft body 1, the limiting shell 124 is a hollow shell with openings 1241 at both ends, the limiting shell 124 is sleeved on the connecting rod 122, and the first section shaft 121 and the second section shaft 123 are located in the two openings 1241, respectively.

[0030] It should be noted that the connecting rod 122 has a polygonal shell 1221 on the outer wall, and the limiting shell 124 has a polygonal groove 1242 on the inner wall that cooperates with the polygonal shell 1221, which facilitates the limiting of the polygonal shell 1221 through the polygonal groove 1242, thereby limiting the connecting rod 122, and further avoiding the self-rotation or stop rotation phenomenon.

[0031] The limiting structure 2 comprises a limiting ring 21, a first sleeve ring 22 and a second sleeve ring 23.

[0032] The limiting ring 21 is sleeved on the outer wall of the output shaft body 1 and is attached to one side of the annular shell 11, the first sleeve ring 22 is sleeved on the outer wall of the annular shell 11, and the outer wall of the annular shell 11 and the inner wall of the first sleeve ring 22 are polygonal in shape and have the same number of sides.

[0033] It should be noted that the annular shell 11 is fixedly connected with the output shaft body 1, the first sleeve ring 22 is gap-fitted with the annular shell 11, and the second sleeve ring 23 is fixedly connected with the first sleeve ring 22, so that the first sleeve ring 22 is convenient to disassemble, install on the annular shell 11 and take off.

[0034] The second sleeve ring 23 is connected with the outer wall of the first sleeve ring 22, and the outer wall of the second sleeve ring 23 is provided with a plurality of first outer splines 231 which are uniformly distributed in a ring shape.

[0035] It should be noted that the outer wall of the second sleeve ring 23 is provided with a plurality of first outer splines 231 which are uniformly distributed in a ring shape, the number of the first outer splines 231 on the second sleeve ring 23 is equal to that of the outer splines of the shaft, so that the first outer splines 231 on the second sleeve ring 23 are convenient to be matched with the outer splines of the shaft, thereby ensuring that the torque can be effectively transmitted between the first outer splines 231 on the second sleeve ring 23 and the outer splines of the shaft, reducing sliding and wear and improving transmission efficiency.

[0036] The annular shell 11 and the limiting ring 21 are fixedly connected with the output shaft body 1, the first sleeve ring 22 is gap-fitted with the annular shell 11, and the second sleeve ring 23 is fixedly connected with the first sleeve ring 22.

[0037] It should be noted that the diameter of the circumscribed circle of the inner wall polygon of the first sleeve ring 22 is equal to the diameter of the limiting ring 21, so that the first sleeve ring 22 is convenient to be limited by the limiting ring 21, and the diameter of the inscribed circle of the inner wall polygon of the first sleeve ring 22 is equal to the diameter of the annular shell 11, so that stress concentration is avoided to prevent the phenomenon of fracture.

[0038] Specifically, when the relevant staff needs to use the power output shaft multi-segment curve connecting structure, first, the connecting shaft 125 is installed in the shaft on the power assembly, and then the first sleeve ring 22 is sleeved on the annular shell 11 and is attached to the end of the shaft.

[0039] At this time, the installation of the power output shaft multi-segment curve connecting structure is completed.

[0040] In conclusion, according to the power output shaft multi-section curve connecting structure, the first sleeve ring is driven to rotate by the second sleeve ring, and then the annular shell and the output shaft body are sequentially driven to rotate, stress concentration is eliminated, the torsional resistance of the shaft is improved, the fracture phenomenon caused by stress concentration is avoided, and the utility model is simple to install and has high practicability.

[0041] In the description of the present specification, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0042] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, different embodiments or examples described in the present specification and the features of different embodiments or examples can be combined and combined by those skilled in the art without contradiction.

[0043] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A multi-segment curved connection structure for a power output shaft, characterized in that, The utility model relates to an output shaft body (1) and limiting structure (2), wherein, The outer wall of one end of the output shaft body (1) is sleeved with an annular shell (11); The limiting structure (2) comprises a limiting ring (21), a first sleeve ring (22) and a second sleeve ring (23), wherein, The limiting ring (21) is sleeved on the outer wall of the output shaft body (1) and is attached to one side of the annular shell (11); The first sleeve ring (22) is sleeved on the outer wall of the annular shell (11); the second sleeve ring (23) is connected with the outer wall of the first sleeve ring (22). The annular shell (11) and the limiting ring (21) are fixedly connected with the output shaft body (1), and the first sleeve ring (22) is gap-fitted with the annular shell (11), and the second sleeve ring (23) is fixedly connected with the first sleeve ring (22).

2. The multi-segment curve coupling structure of a power output shaft according to claim 1, characterized in that, The outer wall of the annular shell (11) and the inner wall of the first sleeve ring (22) are polygonal, and the number of sides of the annular shell (11) is equal to that of the first sleeve ring (22).

3. The multi-segment curve coupling structure of a power output shaft according to claim 1, characterized in that, The outer wall of the second sleeve ring (23) is provided with a plurality of annularly and uniformly distributed first external splines (231).

4. The multi-segment curve coupling structure of a power output shaft according to claim 1, characterized by The end of the output shaft body (1) is provided with a connecting structure (12), and the connecting structure (12) comprises a first shaft segment (121), a connecting rod (122), a second shaft segment (123), a limiting shell (124) and a connecting shaft (125), wherein, 5. The multi-segment curve coupling structure of a power take-off shaft according to claim 1, characterized by, The first shaft segment (121), the connecting rod (122), the second shaft segment (123) and the connecting shaft (125) are sequentially arranged from front to back on the end of the output shaft body (1); The limiting shell (124) is a hollow shell with openings (1241) at both ends, the limiting shell (124) is sleeved on the connecting rod (122), and the first shaft segment (121) and the second shaft segment (123) are located in the two openings (1241) respectively. A polygonal shell (1221) is arranged on the outer wall of the connecting rod (122), and a polygonal groove (1242) matched with the polygonal shell (1221) is formed in the inner wall of the limiting shell (124).

6. The multi-segment curve coupling structure of a power take-off shaft according to claim 5, characterized by ​

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