Lightweight planet carrier

Abstract

The utility model relates to the technical field of planet carriers, and discloses a light-weight planet carrier which comprises a carrier body and an end cover, a mounting plate of the carrier body and the end cover are triangular, three planet wheel shafts are connected between the mounting plate and the end cover in an abutting mode, the three planet wheel shafts are arranged on the three corners of the mounting plate and the three corners of the end cover respectively, and the end cover is arranged on the mounting plate. The mounting plate, the planet wheel shafts and the end covers are jointly connected with connecting bolts, the connecting bolts and the corresponding planet wheel shafts are coaxially arranged, the problem that the overall mass of the planet carrier is large is solved, the overall material is reduced by changing the shape structure of the carrier body, the overall fixing of the planet carrier is achieved through the cooperation of the connecting bolts and the planet wheel shafts, and the overall fixing effect is good. The weight of the connecting structure is reduced, and light weight is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of planetary carriers, and more specifically, to a lightweight planetary carrier. Background Art

[0002] The planet carrier is one of the main components of the planetary gear transmission, which is used to install the planetary gear shaft or bearings. Its reasonable structure should be light weight, good rigidity, and easy to process and assemble.

[0003] Chinese utility model patent application number 202320729707.0 discloses a lightweight wind turbine gearbox planetary carrier. A number of weight-reducing holes are provided on both side panels of the planetary carrier. However, the structure of the planetary carrier itself and the assembly and fixing components used for fixing the planetary carrier make the planetary carrier itself have a certain weight, and the effectiveness of the weight-reducing holes is limited. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention aims to provide a lightweight planet carrier.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A lightweight planetary carrier comprises a carrier body and an end cover, wherein the mounting plate and the end cover of the carrier body are both arranged in a triangular shape, three planetary axles are abutted between the mounting plate and the end cover, and the three planetary axles are arranged at three corners of the mounting plate and the end cover, and the mounting plate, the planetary axles and the end cover are commonly connected with a connecting bolt, and the connecting bolt is arranged coaxially with the corresponding planetary axle.

[0007] The utility model is further configured as follows: a light hole 1 and two threaded holes 1 are respectively provided on the three corners of the mounting plate; a threaded hole 2 and two light holes 2 are correspondingly provided on the end cover; the light hole 1 and the threaded hole 2 are commonly connected with a connecting bolt; the two threaded holes 1 and the two light holes 2 are correspondingly commonly connected with two connecting bolts.

[0008] The present invention is further configured as follows: the connecting bolt includes a threaded column, the threaded column is threadedly connected to the threaded hole one or the threaded hole two, the end column of the threaded column is in corresponding abutment with the mounting plate or the end cover, the threaded column is threadedly connected to the planetary gear shaft, the side of the threaded column away from the end column is connected with a threaded groove column, the threaded groove column is inserted into the light hole one or the light hole two, the threaded groove column extends out of the corresponding light hole one or the light hole two, and is installed with a nut, and the nut is in corresponding abutment with the mounting plate or the end cover.

[0009] The utility model is further configured as follows: a plurality of weight-reducing holes are opened on the end cover, and the plurality of weight-reducing holes are evenly arranged along the center of the end cover.

[0010] The utility model is further configured as follows: a connecting shaft is provided on the side of the mounting plate away from the end cover, a receiving groove is provided on the center of the mounting plate, a through hole is provided through the center of the end cover, and the through hole corresponds to the receiving groove and is used to install the sun gear.

[0011] The advantages of the utility model are:

[0012] The mounting plate and the end cover are both set to be triangular, and the planetary gear shaft is installed on the three vertices thereof. The planetary gear shaft is cylindrical with a threaded hole in the middle. The two ends of the planetary gear shaft are respectively abutted against the mounting plate and the end cover. The mounting plate, the planetary gear shaft and the end cover are connected together by a connecting bolt. One end of the connecting bolt is set to a threaded column and the other end is a threaded groove column. The threaded column is connected to the mounting plate, the planetary gear shaft and the two threads in the end cover. The threaded groove column passes through the other one and is fixed by a nut. The connection and fixation of the mounting plate and the end cover are achieved by the cooperation of the connecting bolt and the planetary gear shaft without the need for other assembly structures, which reduces the overall mass of the planetary carrier. The triangular structure is stable and symmetrical, and has a smaller mass than the conventional circular structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0014] Figure 2 For the Figure 1 The AA line cross-section shown;

[0015] Figure 3 for Figure 2 An enlarged view of part B is shown;

[0016] Figure 4 This is a schematic diagram of the frame structure of the utility model;

[0017] Figure 5 This is a schematic diagram of the end cover structure of the utility model;

[0018] Figure 6 This is a schematic diagram of the connecting bolt structure of the utility model;

[0019] In the figure: 1. Frame; 11. Connecting shaft; 12. Mounting plate; 13. Accommodating groove; 14. Threaded hole 1; 15. Light hole 1; 2. Planetary gear shaft; 3. End cover; 31. Through hole; 32. Lightening hole; 33. Light hole 2; 34. Threaded hole 2; 4. Connecting bolt; 41. Threaded column; 42. Threaded groove column; 43. Nut. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0021] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0022] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned direction words are not used to limit the present invention.

[0023] See also Figure 1-6 , the utility model provides the following technical solutions:

[0024] A lightweight planetary carrier includes a carrier body 1 and an end cover 3. The mounting plate 12 of the carrier body 1 and the end cover 3 are both triangular in shape. Three planetary gear shafts 2 are abutted between the mounting plate 12 and the end cover 3. The three planetary gear shafts 2 are respectively arranged at three corners of the mounting plate 12 and the end cover 3. Excess material on the mounting plate 12 and the end cover 3 is removed. During operation, the triangular structure also has stability and uniformity, thereby reducing the overall mass without affecting the function of the planetary carrier.

[0025] The mounting plate 12, the planetary gear shaft 2 and the end cover 3 are commonly connected with a connecting bolt 4, which is coaxially arranged with the corresponding planetary gear shaft 2. The planetary gear shaft 2 fixes the distance between the mounting plate 12 and the end cover 3. The connecting bolt 4 connects and fixes the mounting plate 12, the planetary gear shaft 2 and the end cover 3, so that the planet carrier forms a whole.

[0026] The three corners of the mounting plate 12 are each provided with a first optical hole 15 and two first threaded holes 14. The end cap 3 is correspondingly provided with a second threaded hole 34 and two second optical holes 33. The first optical hole 15 and the second threaded hole 34 are connected together with a connecting bolt 4. The two first threaded holes 14 and the two second optical holes 33 are correspondingly connected together with two connecting bolts 4.

[0027] The connecting bolt 4 includes a threaded column 41, the end column of the threaded column 41 is correspondingly abutted against the mounting plate 12 or the end cover 3, and a threaded groove column 42 is connected to the side of the threaded column 41 away from the end column;

[0028] The threaded column 41 is threadedly connected to the threaded hole 14 or the threaded hole 2 34. The threaded groove column 42 is inserted into the light hole 15 or the light hole 2 33. The threaded groove column 42 extends out of the corresponding light hole 15 or the light hole 2 33 and is installed with a nut 43. The nut 43 abuts against the mounting plate 12 or the end cover 3.

[0029] The planetary gear shaft 2 is threadedly connected to the threaded column 41, and the two ends of the planetary gear shaft 2 are respectively abutted on the mounting plate 12 and the end cover 3, thereby fixing the relative position between the mounting plate 12 and the end cover 3. During installation, the planetary gear shaft 2 can be screwed onto the threaded column 41, so that the end face of the planetary gear shaft 2 is correspondingly squeezed and fitted with the mounting plate 12 or the end cover 3, and the light hole 15 and the light hole 2 33 can be directly sleeved on the threaded groove column 42. Finally, tightening the nut 43 can ensure that the overall assembly of the planetary carrier is completed. The operation is simple, and the planetary gear shaft 2 is used for fixation, which eliminates other assembly structures, saves materials, and reduces the overall weight.

[0030] A plurality of weight-reducing holes 32 are provided on the end cover 3 , and the plurality of weight-reducing holes 32 are evenly arranged along the center of the end cover 3 , which can further reduce the weight of the planet carrier.

[0031] A connecting shaft 11 is provided on the side of the mounting plate 12 away from the end cover 3. A receiving groove 13 is provided in the center of the mounting plate 12. A through hole 31 is provided through the center of the end cover 3. The through hole 31 corresponds to the receiving groove 13 and is used to install the sun gear.

[0032] Specifically, the mounting plate 12 and the end cover 3 are both set to a triangular shape, and the planetary shaft 2 is installed on its three vertices. The planetary shaft 2 is cylindrical with a threaded hole in the middle. The two ends of the planetary shaft 2 are respectively abutted against the mounting plate 12 and the end cover 3. The mounting plate 12, the planetary shaft 2 and the end cover 3 are connected together by a connecting bolt 4. One end of the connecting bolt 4 is set to a threaded column 41 and the other end is a threaded groove column 42. The threaded column 41 is connected to two threads of the mounting plate 12, the planetary shaft 2 and the end cover 3. The threaded groove column 42 passes through the other one and is fixed by a nut 43. The connection and fixation of the mounting plate 12 and the end cover 3 are achieved by the cooperation of the connecting bolt 4 and the planetary shaft 2 without the need for other assembly structures, which reduces the overall mass of the planetary frame. In addition, its triangular structure is stable and symmetrical, and has less mass than a conventional circular structure.

[0033] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0034] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0035] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar pairs of elements and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0036] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A lightweight planetary carrier, comprising a carrier body (1) and an end cover (3), characterized in that: The mounting plate (12) and the end cover (3) of the frame (1) are both arranged in a triangular shape. Three planetary axles (2) are abutted between the mounting plate (12) and the end cover (3). The three planetary axles (2) are arranged at three corners of the mounting plate (12) and the end cover (3). The mounting plate (12), the planetary axles (2) and the end cover (3) are commonly connected with a connecting bolt (4). The connecting bolt (4) is coaxially arranged with the corresponding planetary axle (2).

2. A lightweight planet carrier according to claim 1, characterized in that: The three corners of the mounting plate (12) are respectively provided with a light hole (15) and two threaded holes (14), and the end cover (3) is correspondingly provided with a threaded hole (34) and two light holes (33). The light hole (15) and the threaded hole (34) are connected to a connecting bolt (4), and the two threaded holes (14) and the two light holes (33) are correspondingly connected to two connecting bolts (4).

3. The lightweight planet carrier according to claim 2, characterized in that: The connecting bolt (4) includes a threaded column (41), the threaded column (41) is threadedly connected to the threaded hole 1 (14) or the threaded hole 2 (34), the end column of the threaded column (41) is correspondingly abutted against the mounting plate (12) or the end cover (3), the threaded column (41) is threadedly connected to the planetary gear shaft (2), the side of the threaded column (41) away from the end column is connected with a threaded groove column (42), the threaded groove column (42) is inserted into the light hole 1 (15) or the light hole 2 (33), the threaded groove column (42) extends out of the corresponding light hole 1 (15) or the light hole 2 (33), and is installed with a nut (43), the nut (43) is correspondingly abutted against the mounting plate (12) or the end cover (3).

4. The lightweight planet carrier according to claim 3, characterized in that: A plurality of weight-reducing holes (32) are provided on the end cover (3), and the plurality of weight-reducing holes (32) are evenly arranged along the center of the end cover (3).

5. The lightweight planet carrier according to claim 1, characterized in that: A connecting shaft (11) is provided on the side of the mounting plate (12) facing away from the end cover (3); a receiving groove (13) is provided at the center of the mounting plate (12); a through hole (31) is provided through the center of the end cover (3); the through hole (31) corresponds to the receiving groove (13) and is used for mounting the sun gear.

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