Sun gear connecting structure

Abstract

The utility model belongs to the technical field of planetary gears, and particularly relates to a sun gear connecting structure which comprises an installation assembly. Comprising a mounting frame, an axial sleeve arranged in the middle of the mounting frame, an inner spline arranged on the inner side wall of the axial sleeve, a lower connecting plate arranged at the top of the mounting frame, a connecting hole formed in the surface of the lower connecting plate and a first positioning hole formed in the surface of the axial sleeve. The sun gear assembly comprises a connecting rod arranged in the axial sleeve, an external spline arranged on the bottom surface of the connecting rod, a sun gear body arranged on the top of the connecting rod, an upper connecting plate arranged in the middle of the connecting rod, a connecting column arranged at the bottom of the upper connecting plate and a second positioning hole formed in the surface of the external spline; the positioning assembly comprises a positioning pin arranged in the first positioning hole and the second positioning hole and a fixing nut arranged at one end of the positioning pin; the structure is reasonable, in the using process, the structural strength of the connecting position can be improved, the service life is prolonged, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of planetary gears, in particular to a sun gear connection structure. Background Art

[0002] Planetary gears are gear systems that can rotate around their own axes like fixed-axis gears, but their axes can also rotate around the axes of other gears along with the planet carrier. Rotation around their own axes is called "rotation", and rotation around the axes of other gears is called "revolution", just like the planets in the solar system, hence the name.

[0003] In the design process of industrial planetary reducers, the sun gear and the planet carrier are generally designed as two parts. At present, the two parts are usually connected by splines in the relevant technology. The existing sun gear connection structure relies on a single spline connection. The spline needs to transmit large torque and impact, resulting in a short service life. For this reason, we propose a new sun gear connection structure. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the problems existing in the prior art, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a sun gear connection structure, which can improve the structural strength of the connection during use, extend the service life, and has strong practicality.

[0007] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0008] A sun gear connection structure, comprising:

[0009] The mounting assembly includes a mounting frame, an axial sleeve arranged in the middle of the mounting frame, an inner spline arranged on the inner side wall of the axial sleeve, a lower connecting plate arranged on the top of the mounting frame, a connecting hole arranged on the surface of the lower connecting plate, and a first positioning hole arranged on the surface of the axial sleeve;

[0010] A sun gear assembly comprises a connecting rod disposed inside an axial sleeve, an external spline disposed on the bottom surface of the connecting rod, a sun gear body disposed on the top of the connecting rod, an upper connecting plate disposed in the middle of the connecting rod, a connecting column disposed at the bottom of the upper connecting plate, and a second positioning hole disposed on the surface of the external spline;

[0011] The positioning assembly comprises a positioning pin arranged inside the first positioning hole and the second positioning hole and a fixing nut arranged at one end of the positioning pin.

[0012] As a preferred solution of a sun gear connection structure described in the utility model, the upper connecting plate and the lower connecting plate are arranged in a triangle, the connecting hole is arranged at the triangle of the lower connecting plate, and the connecting column is arranged at the triangle of the upper connecting plate.

[0013] As a preferred solution of the sun gear connection structure described in the utility model, a mounting hole matching with the connecting rod is arranged in the middle of the sun gear body.

[0014] As a preferred solution of the sun gear connection structure described in the utility model, the positioning pin is made of elastic material.

[0015] As a preferred solution of the sun gear connection structure described in the utility model, a groove is provided on the surface of the positioning pin.

[0016] As a preferred solution of the sun gear connection structure described in the utility model, the number of the connection columns and the connection holes are both three groups.

[0017] As a preferred solution of the sun gear connection structure described in the utility model, the connecting rod is made of high-strength alloy.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. An axial sleeve is arranged on the mounting frame, an internal spline is arranged inside the axial sleeve, and a matching external spline is arranged on the surface of the connecting rod. When the connecting rod is inserted, the connection is stable through the cooperation of the internal spline and the external spline;

[0020] 2. In addition, a lower connecting plate and a connecting hole are provided on the top of the mounting frame, and an upper connecting plate and a connecting column are provided on the surface of the connecting rod. When the connecting rod is inserted, the connecting hole and the connecting column cooperate to further improve the stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0022] Figure 1It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the sun gear assembly of the utility model;

[0024] Figure 3 This is a schematic diagram of the top structure of the mounting frame of the utility model;

[0025] Figure 4 This is a schematic diagram of the bottom structure of the mounting frame of the utility model.

[0026] In the figure; 100 mounting assembly, 110 mounting frame, 120 axial sleeve, 130 internal spline, 140 lower connecting plate, 150 connecting hole, 160 first positioning hole, 200 sun gear assembly, 210 connecting rod, 220 sun gear body, 230 external spline, 240 upper connecting plate, 250 connecting column, 260 second positioning hole, 300 positioning assembly, 310 positioning pin, 320 fixing nut. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0029] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0030] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] The utility model provides the following technical solutions: a sun gear connection structure, which can improve the structural strength of the connection during use, extend the service life, and has strong practicality;

[0032] Figures 1 to 4 The figure shows a schematic diagram of a sun gear connection structure according to an embodiment of the present invention, wherein the main body thereof includes a mounting assembly 100, a sun gear assembly 200 and a positioning assembly 300;

[0033] The mounting assembly 100 includes a mounting frame 110, an axial sleeve 120 mounted in the middle of the mounting frame 110, an internal spline 130 mounted on the inner side wall of the axial sleeve 120, a lower connecting plate 140 mounted on the top of the mounting frame 110, a connecting hole 150 mounted on the surface of the lower connecting plate 140, and a first positioning hole 160 mounted on the surface of the axial sleeve 120. Further, the mounting frame 110 is used to carry the axial sleeve 120, the axial sleeve 120 is used to connect the connecting rod 210, the internal spline 130 is used to cooperate with the external spline 230, the lower connecting plate 140 is used to carry the connecting hole 150, the connecting hole 150 is used to cooperate with the connecting column 250, and the first positioning hole 160 is used to cooperate with the positioning pin 310;

[0034] The sun gear assembly 200 includes a connecting rod 210 installed inside the axial sleeve 120, an external spline 230 installed on the bottom surface of the connecting rod 210, a sun gear body 220 installed on the top of the connecting rod 210, an upper connecting plate 240 installed in the middle of the connecting rod 210, a connecting column 250 installed at the bottom of the upper connecting plate 240, and a second positioning hole 260 installed on the surface of the external spline 230. A mounting hole matching with the connecting rod 210 is opened in the middle of the sun gear body 220. The connecting rod 210 is made of high-strength alloy. Further, the connecting rod 210 is used to carry the sun gear body 220, and the external spline 230 is used to match the internal spline 130 to improve the stability of the connection. The sun gear body 220 is used to connect the planetary gears, and the upper connecting plate 240 is used to carry the connecting column 250. The connecting column 250 is used to insert into the connecting hole 150, which can further improve the stability of the connection.

[0035] The upper connecting plate 240 and the lower connecting plate 140 are arranged in a triangular shape, the connecting holes 150 are opened at the triangular part of the lower connecting plate 140, the connecting posts 250 are installed at the triangular part of the upper connecting plate 240, and the number of the connecting posts 250 and the number of the connecting holes 150 are both three groups;

[0036] The positioning assembly 300 includes a positioning pin 310 installed inside the first positioning hole 160 and the second positioning hole 260 and a fixing nut 320 installed at one end of the positioning pin 310. The positioning pin 310 is made of elastic material and has a groove on its surface. The positioning assembly 300 is used for quick positioning and installation.

[0037] Combination Figure 1-Figure 4A sun gear connection structure of this embodiment has the following specific principles: an axial sleeve 120 is provided on the mounting frame 110, an internal spline 130 is provided inside the axial sleeve 120, and a matching external spline 230 is provided on the surface of the connecting rod 210. When the connecting rod 210 is inserted, the connection is stable through the cooperation between the internal spline 130 and the external spline 230. In addition, a lower connecting plate 140 and a connecting hole 150 are provided on the top of the mounting frame 110, and an upper connecting plate 240 and a connecting column 250 are provided on the surface of the connecting rod 210. When the connecting rod 210 is inserted, the connecting hole 150 and the connecting column 250 cooperate, which can further improve the stability of the connection.

[0038] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A sun gear connection structure, characterized in that: include: The mounting assembly (100) comprises a mounting frame (110), an axial sleeve (120) arranged in the middle of the mounting frame (110), an internal spline (130) arranged on the inner side wall of the axial sleeve (120), a lower connecting plate (140) arranged on the top of the mounting frame (110), a connecting hole (150) arranged on the surface of the lower connecting plate (140), and a first positioning hole (160) arranged on the surface of the axial sleeve (120); A sun gear assembly (200) comprises a connecting rod (210) arranged inside an axial sleeve (120), an external spline (230) arranged on the bottom surface of the connecting rod (210), a sun gear body (220) arranged on the top of the connecting rod (210), an upper connecting plate (240) arranged in the middle of the connecting rod (210), a connecting column (250) arranged at the bottom of the upper connecting plate (240), and a second positioning hole (260) arranged on the surface of the external spline (230); The positioning assembly (300) comprises a positioning pin (310) arranged inside the first positioning hole (160) and the second positioning hole (260), and a fixing nut (320) arranged at one end of the positioning pin (310).

2. A sun gear connection structure according to claim 1, characterized in that: The upper connecting plate (240) and the lower connecting plate (140) are arranged in a triangular shape, the connecting hole (150) is arranged at the triangular position of the lower connecting plate (140), and the connecting column (250) is arranged at the triangular position of the upper connecting plate (240).

3. A sun gear connection structure according to claim 1, characterized in that: A mounting hole matching the connecting rod (210) is arranged in the middle of the sun gear body (220).

4. A sun gear connection structure according to claim 1, characterized in that: The positioning pin (310) is made of elastic material.

5. A sun gear connection structure according to claim 1, characterized in that: The surface of the positioning pin (310) is provided with a groove.

6. A sun gear connection structure according to claim 1, characterized in that: The number of the connection columns (250) and the number of the connection holes (150) are both three groups.

7. A sun gear connection structure according to claim 1, characterized in that: The connecting rod (210) is made of high-strength alloy.

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