Large-diameter composite double gear

Abstract

The utility model discloses a large diameter composite duplex gear, include: gear ring part and wheel hub part, gear ring part coaxial interference installation in the outside of wheel hub part, just gear ring part with wheel hub part is opposite fixed through the connecting piece. The utility model discloses through to the optimization of structure, realized the material saving, and improved the processing efficiency, greatly reduced the manufacturing cost of duplex gear, and still maintained the stability and reliability of duplex gear.

Description

Technical Field

[0001] This utility model relates to the technical field of double gears, and more particularly to a large-diameter composite double gear. Background Technology

[0002] The double gear is designed as an integral structure, made of high-quality low-alloy steel, and heat-treated by carburizing and quenching to obtain certain impact resistance and wear resistance properties.

[0003] However, for large-diameter double gears used in large, heavy-duty gearboxes with a diameter of over 1 meter, a monolithic structure would consume a large amount of high-quality low-alloy steel due to its large size. Furthermore, given the performance requirements of double gears, only the tooth surface of the gear ring requires high precision; a monolithic structure would not only waste high-quality steel but also introduce numerous inconveniences to the machining and heat treatment of the double gears. Utility Model Content

[0004] In view of the aforementioned problems with existing double gears, the aim is to provide a large-diameter compound double gear.

[0005] The specific technical solution is as follows:

[0006] A large-diameter compound double gear includes a gear ring portion and a hub portion, wherein the gear ring portion is coaxially and interference-fitted to the outside of the hub portion, and the gear ring portion and the hub portion are fixed relative to each other by a connector.

[0007] As a further improvement and optimization of this solution, the gear ring is made of low alloy steel.

[0008] As a further improvement and optimization of this solution, the wheel hub is made of carbon steel.

[0009] As a further improvement and optimization of this solution, a limiting groove is coaxially provided at one open end of the gear ring portion, and a limiting extension is provided on the outer ring of one end of the hub portion, the limiting extension being matched with the bottom of the limiting groove.

[0010] As a further improvement and optimization of this solution, the connecting member includes several cylindrical pins, and several pin holes are formed between the inner wall of the other open end of the gear ring portion and the outer wall of the other end of the hub portion, and the several cylindrical pins are respectively positioned and engaged with the several pin holes.

[0011] As a further improvement and optimization of this solution, several of the pin holes are distributed at equal intervals along the circumference of the hub portion.

[0012] As a further improvement and optimization of this solution, the inner wall of the other open end of the gear ring portion is formed with a plurality of first pin grooves, and the outer wall of the other end of the hub portion is formed with a plurality of second pin grooves, and the plurality of second pin grooves and the plurality of first pin grooves respectively form a plurality of pin holes.

[0013] As a further improvement and optimization of this solution, a transmission part extends axially outward from one end of the hub portion, and the outer wall of the transmission part has an external spline.

[0014] As a further improvement and optimization of this solution, an annular groove is formed at the connection between the transmission part and the wheel hub part.

[0015] As a further improvement and optimization of this solution, the outer wall of the gear ring portion has a toothed surface.

[0016] The positive effects of the above technical solution compared with the existing technology are:

[0017] This invention achieves material savings and improves processing efficiency through structural optimization, greatly reducing the manufacturing cost of double gears while maintaining their stability and reliability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a large-diameter composite double gear according to the present invention;

[0019] In the attached diagram: 1. Gear ring; 2. Hub; 3. Cylindrical pin; 11. Tooth surface; 12. Limiting groove; 21. Limiting extension; 22. Connecting part; 23. Annular groove; 221. External spline. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Figure 1 This is a schematic diagram of the structure of a large-diameter composite double gear according to the present invention, as shown below. Figure 1 As shown, a preferred embodiment of a large-diameter compound double gear is illustrated, comprising: a gear ring portion 1 and a hub portion 2, wherein the gear ring portion 1 is coaxially and interference-fitted onto the outside of the hub portion 2, and the gear ring portion 1 and the hub portion 2 are fixed relative to each other by a connector.

[0024] This embodiment employs a modular manufacturing and assembly technique, allowing the gear ring portion 1 and the hub portion 2 to utilize two different materials. The gear ring portion 1 can be made of a material with higher hardness and better wear resistance, while the hub portion 2 can be made of a material with higher strength and easier molding. This design not only reduces the use of high-cost, high-quality low-alloy steel but also allows for the selection of more suitable materials based on the actual working requirements of each component, thereby achieving an optimal balance between performance and cost.

[0025] Furthermore, as a preferred embodiment, the gear ring portion 1 is made of low alloy steel.

[0026] Furthermore, as a preferred embodiment, the hub portion 2 is made of carbon steel.

[0027] Furthermore, as a preferred embodiment, in order to improve the installation accuracy of the gear ring portion 1 and the hub portion 2, a limiting groove 12 is coaxially provided at one open end of the gear ring portion 1, and a limiting extension edge 21 is provided on the outer ring of one end of the hub portion 2, and the limiting extension edge 21 is limited and engaged with the bottom of the limiting groove 12.

[0028] Furthermore, as a preferred embodiment, the connector includes a plurality of cylindrical pins 3, and a plurality of pin holes are formed between the inner wall of the other open end of the gear ring portion 1 and the outer wall of the other end of the hub portion 2. The plurality of cylindrical pins 3 are respectively positioned and engaged with the plurality of pin holes. Through the positioning and engagement of the cylindrical pins 3 with the pin holes, the mutual fixation of the gear ring portion 1 and the hub portion 2 in the circumferential direction can be ensured.

[0029] Furthermore, as a preferred embodiment, a plurality of pin holes are evenly distributed along the circumference of the hub portion 2.

[0030] Furthermore, in a preferred embodiment, the inner wall of the open end of the other end of the gear ring portion 1 is formed with a plurality of first pin grooves, and the outer wall of the other end of the hub portion 2 is formed with a plurality of second pin grooves, and a plurality of pin holes are formed between the plurality of second pin grooves and the plurality of first pin grooves respectively.

[0031] Furthermore, as a preferred embodiment, one end of the hub portion 2 extends axially outward to have a transmission portion 22, and the outer wall of the transmission portion 22 has an external spline 221.

[0032] Furthermore, in a preferred embodiment, an annular groove 23 is formed at the connection between the transmission part 22 and the hub part 2.

[0033] Furthermore, as a preferred embodiment, the outer wall of the gear ring portion 1 has a toothed surface 11.

[0034] In this embodiment, the tooth surface 11 of the gear ring part 1 and the external spline 221 of the hub part 2 can be processed separately. Through reasonable design, the processing of large-diameter compound double gear is more convenient. The separate processing method not only improves production efficiency, but also helps to improve the processing accuracy of the double gear and ensure overall quality.

[0035] The structural design in this embodiment ensures good stability and reliability during operation, reduces stress concentration during heat treatment, and thus extends the service life of the gears.

[0036] In this embodiment, the stress conditions and environmental factors of the double gear in actual application are fully considered in the material selection and structural design to ensure that it can maintain a good working condition under complex working conditions and avoid failures caused by material fatigue or structural failure.

[0037] This embodiment not only saves materials but also improves processing convenience and optimizes each link in the manufacturing chain, thereby reducing the overall manufacturing cost.

[0038] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A large-diameter composite double gear, characterized in that, include: The gear ring portion and the hub portion are coaxially and interference-fitted to the outside of the hub portion, and the gear ring portion and the hub portion are fixed relative to each other by a connector; The gear ring portion has a limiting groove coaxially provided at one open end, and the outer ring of one end of the hub portion has a limiting extension edge, which is matched with the bottom of the limiting groove for limiting.

2. The large-diameter composite double gear according to claim 1, characterized in that, The gear ring is made of low alloy steel.

3. The large-diameter composite double gear according to claim 1, characterized in that, The wheel hub is made of carbon steel.

4. The large-diameter composite double gear according to claim 1, characterized in that, The connector includes a plurality of cylindrical pins, and a plurality of pin holes are formed between the inner wall of the other open end of the gear ring portion and the outer wall of the other end of the hub portion, and the plurality of cylindrical pins are respectively positioned and engaged with the plurality of pin holes.

5. The large-diameter composite double gear according to claim 4, characterized in that, The pin holes are evenly spaced along the circumference of the hub portion.

6. The large-diameter composite double gear according to claim 5, characterized in that, The inner wall of the other open end of the gear ring portion is formed with a plurality of first pin grooves, and the outer wall of the other end of the hub portion is formed with a plurality of second pin grooves. The plurality of second pin grooves and the plurality of first pin grooves respectively form a plurality of pin holes.

7. The large-diameter composite double gear according to claim 1, characterized in that, One end of the hub portion extends axially outward to form a transmission part, and the outer wall of the transmission part has an external spline.

8. The large-diameter composite double gear according to claim 7, characterized in that, An annular groove is formed at the connection between the transmission part and the wheel hub.

9. The large-diameter composite double gear according to claim 1, characterized in that, The outer wall of the gear ring portion has a toothed surface.

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