Polygonal connection structure of power output shaft
Through the design of the polygonal coupling structure, the stress concentration problem of involute spline structure at the tail of the key is solved, and the high torque bearing and fracture protection of the output shaft are achieved, making it easy to install.
Patent Information
- Application Number
- CN202423008366.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-12-06
AI Technical Summary
The involute spline structure of the existing power output shaft is prone to stress concentration at the tail of the key, resulting in a decrease in torque bearing capacity, easy to twist, and cannot be assembled through one axis after being bolded.
A polygonal coupling structure is adopted. By setting the first ring and the annular shell, the second ring is used to drive the first ring to rotate to avoid stress concentration. At the same time, a second force-partition structure is set between the output shaft body and the transmission rod, and the polygonal cooperation of the positioning rod transmits power to avoid breakage.
It effectively avoids stress concentration, improves the torque bearing capacity of the output shaft, prevents breakage, and is simple to install and has strong practicality.
Smart Images
Figure CN223294092U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of connection structures of output shafts, in particular to a polygonal connection structure of a power output shaft. Background Art
[0002] The output shaft, also known as the power output shaft, currently utilizes an involute spline design for all tractor manufacturers. This design offers the advantage of standardized broaches or hobs, making standardized manufacturing easy. However, the problem is that stress concentration easily forms at the key tail, significantly reducing the ability to withstand torque and making it prone to breaking. If the shaft is thickened, it will not fit through the shaft, making assembly impossible.
[0003] Therefore, in order to solve the above-mentioned technical problems, a polygonal connection structure of a power output shaft is needed, in which the transition zone is not easily twisted off. Summary of the Invention
[0004] The present invention aims to solve at least one of the technical problems in the above-mentioned technology to a certain extent.
[0005] To achieve the above-mentioned purpose, the first aspect of the present invention proposes a polygonal connection structure of a power output shaft, comprising: an output shaft body, a transmission rod and a mounting rod, wherein the transmission rod is arranged on one end of the output shaft body; the mounting rod is arranged on one end of the transmission rod.
[0006] In addition, the power output shaft polygonal connection structure proposed in the present invention may also have the following additional technical features:
[0007] Furthermore, an annular shell is provided on the outer wall of one end of the output shaft body, and the outer wall of the annular shell is a first polygon. An annular plate is also provided on the outer wall of one end of the output shaft body and fits with one side of the annular shell.
[0008] Furthermore, for the double-acting clutch chassis assembly, a first force component structure is installed on the outer wall of the annular shell, and the first force component structure includes: a first ring, a second ring and a first external spline, wherein the first ring is a ring body with two ends passing through and a second polygonal interior; the first ring is sleeved on the annular shell and fits with the annular plate; the second ring is fixedly set on the first ring, and a plurality of first external splines are evenly spaced on the outer wall of the second ring.
[0009] Furthermore, for the single-acting clutch chassis assembly, a second force component structure is provided between the output shaft body and the transmission rod, and the second force component structure includes: a third ring, a fourth ring, a first positioning rod and a second positioning rod, wherein the third ring and the fourth ring are sequentially sleeved on one end of the output shaft body; the first positioning rod is fixedly provided on the end portion of one end of the output shaft body, and a polygonal hole is provided on the end of the first positioning rod away from the output shaft body, and a plurality of second external splines are evenly spaced on the outer wall of the first positioning rod; the outer wall of the second positioning rod is a third polygon, and one end of the second positioning rod is engaged in the polygonal hole through the third polygon, and the other end is fixedly connected to the transmission rod.
[0010] According to a polygonal connection structure of a power output shaft of the utility model, by setting the cooperation between the first sleeve ring and the annular shell, it is convenient to drive the first sleeve ring to rotate through the second sleeve ring, and then drive the annular shell and the output shaft body to rotate in turn, thereby avoiding the formation of stress concentration and causing fracture. The utility model is simple to install and has great practicality. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:
[0012] Figure 1 This is a schematic diagram of the three-dimensional structure assembly of the original structure of the power output shaft and the chassis assembly according to one embodiment of the utility model;
[0013] Figure 2 This is a power output shaft original structure according to an embodiment of the utility model Figure 1 A schematic diagram of the three-dimensional structure of the output shaft body, the transmission rod and the mounting rod;
[0014] Figure 3 This is a schematic diagram of the three-dimensional structure of a polygonal connection structure of a power output shaft according to one embodiment of the present utility model;
[0015] Figure 4 A polygonal connection structure for a power output shaft according to an embodiment of the present invention Figure 3 Schematic diagram of the three-dimensional structure decomposition;
[0016] Figure 5 A polygonal connection structure for a power output shaft according to an embodiment of the present invention Figure 4 A schematic diagram of the enlarged structure of local A;
[0017] Figure 6 This is a schematic diagram of the three-dimensional structure of a polygonal connection structure of a power output shaft according to another embodiment of the present utility model;
[0018] Figure 7 A polygonal connection structure for a power output shaft according to an embodiment of the present invention Figure 6 Schematic diagram of the three-dimensional structure decomposition;
[0019] As shown in the figure:
[0020] 1. Output shaft body; 11. Annular shell; 111. First polygon; 12. Annular plate; 13. First force component structure; 131. First sleeve; 1311. Second polygon; 132. Second sleeve; 133. First external spline; 14. Second force component structure; 141. Third sleeve; 142. Fourth sleeve; 143. First positioning rod; 1431. Polygonal hole; 1432. Second external spline; 144. Second positioning rod; 1441. Third polygon; 2. Transmission rod; 3. Mounting rod. DETAILED DESCRIPTION
[0021] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.
[0022] A polygonal connection structure of a power output shaft according to an embodiment of the present invention will be described below with reference to the accompanying drawings.
[0023] Example 1: Figures 1 to 5 As shown, an embodiment of the present invention provides a power output shaft polygonal connection structure, which may include an output shaft body 1 , a transmission rod 2 and a mounting rod 3 .
[0024] The transmission rod 2 is arranged on one end of the output shaft body 1 , and the mounting rod 3 is arranged on one end of the transmission rod 2 .
[0025] It should be noted that an annular shell 11 is provided on the outer wall of one end of the output shaft body 1, and the outer wall of the annular shell 11 is a first polygon 111. An annular plate 12 is also provided on the outer wall of one end of the output shaft body 1, and fits with one side of the annular shell 11. On the one hand, the first polygon 111 facilitates cooperation with the first sleeve 131, so that it is engaged with the annular shell 11. On the other hand, the annular plate 12 is provided to facilitate limiting the first sleeve 131 to prevent it from sliding during operation.
[0026] It should be noted that a first force component structure 13 is installed on the outer wall of the annular shell 11 to eliminate stress concentration to a certain extent, thereby avoiding fracture.
[0027] The first force component structure 13 includes a first collar 131 , a second collar 132 and a first external spline 133 .
[0028] Among them, the first ring 131 is a ring body with two ends passing through and a second polygon 1311 inside. The first ring 131 is sleeved on the annular shell 11 and fits with the annular plate 12. The second ring 132 is fixedly set on the first ring 131, and a plurality of first external splines 133 are evenly spaced on the outer wall of the second ring 132.
[0029] It should be noted that the diameter of the inscribed circle of the second polygon 1311 is substantially the same as the diameter of the circumscribed circle of the first polygon 111 , which can eliminate stress concentration to a certain extent and avoid fracture.
[0030] It should be noted that the second polygon 1311 has the same number of sides as the first polygon 111 and has a high matching accuracy, which facilitates the annular shell 11 to rotate through the first ring 131 and further drives the output shaft body 1 to rotate.
[0031] It should be noted that a plurality of fourth external splines are provided on the outer wall of the first shaft of the chassis assembly, and the parameters of the plurality of first external splines 133 are exactly the same as the plurality of fourth external splines of the first shaft of the chassis assembly. When the second ring 132 starts working, power can be transmitted to the output shaft body 1.
[0032] Specifically, when it is necessary to install a power output shaft polygonal connection structure of an embodiment of the present invention on a chassis assembly, first, the output shaft body 1 and the transmission rod 2 are sequentially passed through an axis of the chassis assembly from the rear end, and the annular shell 11 and the annular plate 12 are located outside the front end of an axis. Finally, the first ring 131 is sleeved on the annular shell 11.
[0033] It should be noted that for the chassis assembly of the double-acting clutch, the clutch factory needs to change the internal spline hub on the secondary plate to the same hub as the main plate equipped with one shaft, and at least the spline parameters must be the same.
[0034] At this point, the installation of the polygonal connection structure of the power output shaft according to the embodiment of the present invention is completed.
[0035] In summary, according to an embodiment of the present invention, a polygonal connection structure of a power output shaft is provided, by setting the cooperation between the first ring 131 and the annular shell 11, so that the first ring 131 is driven to rotate by the second ring 132, and then the annular shell 11 and the output shaft body 1 are driven to rotate in turn, thereby avoiding the formation of stress concentration and causing fracture, and the installation is simple and practical.
[0036] Example 2: Figure 1 、 Figure 2 、 Figure 6 and Figure 7As shown, an embodiment of the present invention further provides a power output shaft polygonal connection structure, specifically, an output shaft body 1 , a transmission rod 2 and a mounting rod 3 .
[0037] The transmission rod 2 is arranged on one end of the output shaft body 1 , and the mounting rod 3 is arranged on one end of the transmission rod 2 .
[0038] A second force distribution structure 14 is provided between the output shaft body 1 and the transmission rod 2 . The second force distribution structure 14 includes a third ring 141 , a fourth ring 142 , a first positioning rod 143 and a second positioning rod 144 .
[0039] Among them, the third ring 141 and the fourth ring 142 are sequentially sleeved on one end of the output shaft body 1, the first positioning rod 143 is fixedly set on the end of one end of the output shaft body 1, and a polygonal hole 1431 is opened on the end of the first positioning rod 143 away from the output shaft body 1, and a plurality of second external splines 1432 are evenly spaced on the outer wall of the first positioning rod 143. The outer wall of the second positioning rod 144 is a third polygon 1441, and one end of the second positioning rod 144 is engaged in the polygonal hole 1431 through the third polygon 1441, and the other end is fixedly connected to the transmission rod 2.
[0040] It should be noted that the third polygon 1441 has the same number of sides as the polygonal hole 1431 and has a high matching accuracy, which facilitates the rotation of the second positioning rod 144 through the first positioning rod 143, thereby driving the chassis assembly to work.
[0041] Specifically, when it is necessary to install a power output shaft polygonal connection structure of an embodiment of the present invention, the second positioning rod 144 on the transmission rod 2 is inserted into the first positioning rod 143, and the third polygon 1441 is matched with the polygonal hole 1431.
[0042] At this point, the installation of the polygonal connection structure of the power output shaft according to the embodiment of the present invention is completed.
[0043] In summary, according to an embodiment of the present invention, a polygonal connection structure of a power output shaft avoids stress concentration and fracture by setting the cooperation between the first positioning rod 143 and the second positioning rod 144, and is simple to install and highly practical.
[0044] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.
[0045] In the description of this specification, the description with reference to 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 this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.
[0046] 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 limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.
Claims
1. A polygonal connection structure for a power output shaft, characterized in that: include: An output shaft body (1), a transmission rod (2) and a mounting rod (3), wherein: The transmission rod (2) is arranged on one end of the output shaft body (1); The mounting rod (3) is arranged on one end of the transmission rod (2).
2. The polygonal connection structure of the power output shaft according to claim 1, characterized in that: An annular shell (11) is provided on the outer wall of one end of the output shaft body (1), and the outer wall of the annular shell (11) is in the shape of a first polygon (111). An annular plate (12) is also provided on the outer wall of one end of the output shaft body (1) and is fitted with one side of the annular shell (11).
3. The power output shaft polygonal connection structure according to claim 2, characterized in that: A first force component structure (13) is installed on the outer wall of the annular shell (11), and the first force component structure (13) includes: a first collar (131), a second collar (132) and a first external spline (133), wherein: The first ring (131) is a ring body with two ends passing through and an interior formed into a second polygon (1311); The first collar (131) is sleeved on the annular shell (11) and fits closely with the annular plate (12); The second collar (132) is fixedly arranged on the first collar (131), and a plurality of first external splines (133) are arranged at equal intervals on the outer wall of the second collar (132).
4. Another power output shaft polygonal connection structure according to claim 1, characterized in that: A second force component structure (14) is provided between the output shaft body (1) and the transmission rod (2), and the second force component structure (14) comprises: a third collar (141), a fourth collar (142), a first positioning rod (143) and a second positioning rod (144), wherein: The third sleeve ring (141) and the fourth sleeve ring (142) are sequentially sleeved on one end of the output shaft body (1); The first positioning rod (143) is fixedly arranged on the end of one end of the output shaft body (1), and a polygonal hole (1431) is provided on the end of the first positioning rod (143) away from the output shaft body (1), and a plurality of second external splines (1432) are evenly spaced on the outer wall of the first positioning rod (143); The outer wall of the second positioning rod (144) is in the shape of a third polygon (1441), and one end of the second positioning rod (144) is engaged in the polygonal hole (1431) through the third polygon (1441), and the other end is fixedly connected to the transmission rod (2).