Driving wheel with hollow structure

Abstract

The driving wheel with the hollow structure comprises a main body part, the main body part is in a circular ring shape, wheel teeth are evenly arranged on the outer circumference of the main body part, the main body part is provided with an annular cavity and a longitudinal through hole, the annular cavity is located in the center of the main body part in the thickness direction and extends in an annular mode, and the longitudinal through hole is communicated with the annular cavity. The annular cavity is formed in the main body part, the annular cavity and the main body part are concentrically distributed, and the multiple longitudinal through holes correspond to the gear teeth respectively and perpendicularly penetrate through the annular cavity. According to the driving wheel with the hollow structure, through ingenious layout and design, the overall weight of the driving wheel can be effectively reduced on the basis that the overall structural strength and stability of the driving wheel are not affected, and then the purposes of light weight and convenience are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of driving wheel products, in particular to a driving wheel with a hollow structure. Background Art

[0002] A driving wheel is a mechanical component. As a driving part, it is mainly used to transmit the mechanical kinetic energy of a speed reducer to the whole machine, thereby promoting the whole machine to move forward, and is widely used in construction machinery or automobiles.

[0003] Under the background of the rapid development of the current industrial economy, the competition in all walks of life is becoming increasingly fierce. On the premise of meeting performance and usage requirements, the construction machinery industry is also developing towards lightweight and convenient directions.

[0004] During the working process, the driving wheel not only provides the power for the whole machine to move forward through the friction with the ground, but also needs to bear the weight of the whole machine. At present, most driving wheel designs tend to focus on transmission stability and shock absorption performance. Therefore, the lightweight design of driving wheels has great prospects for development. Summary of the Utility Model

[0005] An embodiment of the present application provides a driving wheel with a hollow structure, which can effectively reduce the overall weight on the basis of not affecting its overall structural strength and stability through ingenious layout and design, thereby achieving the purpose of lightweight and convenience.

[0006] An embodiment of the present application provides a driving wheel with a hollow structure, including a main body portion. The main body portion is circular ring-shaped, and gear teeth are uniformly arranged on the outer circumference of the main body portion. The main body portion is provided with a circumferential chamber and longitudinal through holes. The circumferential chamber is located at the central position in the thickness direction of the main body portion, extends annularly, and is concentrically distributed with the main body portion. There are multiple longitudinal through holes, and the multiple longitudinal through holes respectively correspond to the gear teeth and vertically penetrate the main body portion at the circumferential chamber.

[0007] In a possible implementation manner, the distance between the circumferential chamber and the outer ring surface of the main body portion is 0.75 to 0.85 times the distance between the circumferential chamber and the inner ring surface of the main body portion.

[0008] In a possible implementation manner, a gear tooth chamber is opened at the outer side of the circumferential chamber of the main body portion opposite to the gear teeth. The gear tooth chamber is communicated with the circumferential chamber, and a part of the gear tooth chamber is embedded into the gear teeth. The maximum embedding depth of the gear tooth chamber is 0.12 to 0.18 times the maximum radial thickness of the gear teeth.

[0009] In a possible implementation, in the circumferential direction of the main body portion, the shape of the tooth cavity corresponds to the shape of the tooth; in the cross-sectional direction of the main body portion perpendicular to the circumferential direction, the tooth cavity is an isosceles trapezoid, and the upper base of the isosceles trapezoid has a circular arc transition.

[0010] In a possible implementation, the longitudinal through hole is a waist-shaped hole, and the extending direction of the waist-shaped hole is the same as the extending direction of the circumferential chamber.

[0011] In a possible implementation, in the radial direction perpendicular to the circumferential direction of the main body portion, the longitudinal through hole is close to the middle of the circumferential chamber, and there is a gap between the longitudinal through hole and both the inner ring surface and the outer ring surface of the circumferential chamber at the same time.

[0012] In a possible implementation, annular reinforcing ribs are symmetrically arranged on both sides of the main body portion close to the outer ring surface.

[0013] Advantageous effects: Compared with the prior art, the driving wheel with a hollow structure provided in this application can effectively reduce the overall weight of the driving wheel on the basis of not affecting the overall structural strength and stability of the driving wheel by providing a circumferential chamber and longitudinal through holes in the main body portion, where the circumferential chamber extends annularly along the central position in the main body portion, and at the same time the longitudinal through holes respectively correspond to the teeth and vertically penetrate the circumferential chamber, achieving the purpose of light weight and convenience, which is of great significance to the competitiveness of the product in the market.

[0014] These and other objects, features and advantages of the present utility model are fully embodied through the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Shows a three-dimensional structural schematic diagram of the driving wheel with a hollow structure of this application.

[0016] Figure 2 Shows a side cross-sectional schematic diagram of the driving wheel with a hollow structure of this application.

[0017] Figure 3 Shows a partial front cross-sectional schematic diagram of the driving wheel with a hollow structure of this application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles defined in the following description can be applied to other embodiments, variations, improvements, equivalent solutions, and other technical solutions that do not depart from the spirit and scope of the present utility model.

[0019] Those skilled in the art should understand that in the disclosure of the specification, the orientation or positional relationships indicated by terms such as "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the present invention.

[0020] It can be understood that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of this element can be multiple. The term "a" should not be construed as a limitation on the quantity.

[0021] Reference Figures 1 to 3 , an embodiment of the present application provides a driving wheel with a hollow structure, including a main body part 10. The main body part 10 is in an annular shape. At the same time, gear teeth 20 are uniformly arranged on the outer circumference of the main body part 10. And the main body part 10 is provided with a circumferential chamber 101 and longitudinal through holes 102. Among them, the circumferential chamber 101 is located at the central position in the thickness direction of the main body part 10, extends annularly, and is concentrically distributed with the main body part 10. Among them, there are multiple longitudinal through holes 102, and the multiple longitudinal through holes 102 respectively correspond to the gear teeth 20 and vertically penetrate the main body part 10 at the circumferential chamber 101. Thus, even though the circumferential chamber 101 and the longitudinal through holes 102 are provided, the driving wheel is still an integral structure and still has good structural strength and structural stability as a whole. In addition, on this basis, the circumferential chamber 101 and the longitudinal through holes 102 can effectively reduce the overall weight of the driving wheel, thereby achieving the purpose of light weight and convenience, which is of great significance for the competitiveness of the product in the market. In addition, this hollow design can also improve the mechanical properties such as the vibration resistance and fatigue resistance of the overall structure of the driving wheel.

[0022] In one embodiment, the distance α between the circumferential chamber 101 and the outer ring surface of the main body 10 is 0.75 to 0.85 times the distance β between the circumferential chamber 101 and the inner ring surface of the main body 10. Specifically, when the distance between the circumferential chamber 101 and the outer ring surface of the main body 10 is 6.50, the distance between the circumferential chamber 101 and the inner ring surface of the main body 10 is 7.95. That is to say, only for the main body of the driving wheel, the circumferential chamber 101 is slightly closer to the outer ring surface of the main body 10. At this time, the radial dimension of the tooth 20 is 13. Further, the radial dimension of the tooth 20 is greater than the aforementioned two dimensions at the same time, but the teeth 20 are evenly spaced and do not directly cover the entire outer ring surface of the main body 10. Therefore, the circumferential chamber 101 is slightly closer to the outer ring surface and maintains the distance range of the above multiple, rather than being significantly closer to the outer ring surface. Therefore, considering the overall shape of the driving wheel, the design layout with the distance ratio between the circumferential chamber 101 and the two being 0.75 to 0.85 times can achieve the purpose of lightweight through the circumferential chamber on the basis of fully meeting the overall structural strength and structural stability of the driving wheel.

[0023] In addition, although the teeth 20 do not directly cover the entire outer ring surface of the main body 10, the teeth 20 have a large protruding thickness at the position where they are located. Therefore, a tooth cavity 103 is provided on the main body 10 opposite to the teeth 20 on the outer side of the circumferential chamber 101, wherein the tooth cavity 103 communicates with the circumferential chamber 101, and at the same time, the tooth cavity 103 is partially embedded in the tooth 20, and the maximum embedding depth A of the tooth cavity 103 is 0.12 to 0.18 times the maximum radial thickness B of the tooth 20. In this way, the structural characteristics of the teeth 20 can be fully utilized, and on the basis of meeting the overall structural strength and structural stability of the driving wheel, the overall weight of the driving wheel can be further reduced by the tooth cavity 103 partially embedded in the tooth 20. Specifically, when the radial dimension of the tooth 20 is 13, the embedding depth of the tooth cavity 103 is 2.

[0024] Further preferably, in the circumferential direction of the main body portion 10, the shape of the tooth cavity 103 corresponds to the shape of the tooth 20, so that a weight reduction design can be maximized on the basis of meeting the structural strength and structural stability. In addition, considering that the tooth 20 mainly functions as a rotational drive when bearing weight, therefore, in the cross-sectional direction of the main body portion 10 perpendicular to the circumferential direction, the tooth cavity 103 is in the shape of an isosceles trapezoid, and the upper base of the isosceles trapezoid has an arc transition. Thus, the gradually decreasing arc protrusion of the tooth cavity 103 can ensure the local structural strength of the tooth 20 portion. Compared with the design of a deeper protrusion into the tooth 20 and the design directly corresponding to the outer shape of the tooth 20 (i.e., the top surface is a plane), this special design and reasonable layout of the key part can effectively enhance the strength and stiffness of the tooth 20 when bearing loads on the basis of weight reduction.

[0025] In one embodiment, the longitudinal through hole 102 is an oval hole, and the extending direction of the oval hole is the same as the extending direction of the circumferential chamber 101, so that while carrying out a weight reduction design, the overall structural strength and structural stability of the driving wheel can be ensured.

[0026] Further preferably, in the radial direction perpendicular to the circumferential direction of the main body portion 10, the longitudinal through hole 102 is close to the middle of the circumferential chamber 101, and at the same time has a gap between the inner ring surface and the outer ring surface of the circumferential chamber 101, so as to prevent the longitudinal through hole 102 from damaging the structure of the circumferential chamber 101 at its own boundary and ensure the structural stability of the circumferential chamber 101 as much as possible.

[0027] In one embodiment, annular reinforcing ribs 11 are symmetrically arranged on both sides of the main body portion 10 close to the outer ring surface, for enhancing the structural strength of the main body portion 10 near the outer edge.

[0028] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been shown and described in the embodiments. Without departing from the above principles, the embodiments of the present invention can have any deformation or modification.

Claims

1. A driving wheel with a hollow structure, characterized in that: It includes a main body, which is in a circular ring shape, and gear teeth are evenly arranged on the outer circumference of the main body. The main body is provided with an annular chamber and a longitudinal through hole, wherein the annular chamber is located at the center position of the main body in the thickness direction, extends in a ring shape, and is concentrically distributed with the main body, and there are multiple longitudinal through holes, and the multiple longitudinal through holes correspond to the gear teeth respectively and vertically penetrate the main body at the annular chamber.

2. The driving wheel with a hollow structure according to claim 1, characterized in that: The distance between the annular chamber and the outer annular surface of the main body is 0.75 to 0.85 times the distance between the annular chamber and the inner annular surface of the main body.

3. The driving wheel with a hollow structure as claimed in claim 2, characterized in that: The main body is provided with a gear tooth cavity on the outer side of the annular cavity facing the gear tooth. The gear tooth cavity is connected to the annular cavity, and the gear tooth cavity is partially embedded in the gear tooth. The maximum embedding depth of the gear tooth cavity is 0.12 to 0.18 times the maximum radial thickness of the gear tooth.

4. The driving wheel with a hollow structure as claimed in claim 3, characterized in that: In the annular direction of the main body, the shape of the gear tooth cavity corresponds to the shape of the gear tooth; in the cross-sectional direction of the main body perpendicular to the annular direction, the gear tooth cavity is an isosceles trapezoid, and the upper base of the isosceles trapezoid is an arc-shaped transition.

5. The driving wheel with a hollow structure according to claim 1, characterized in that: The longitudinal through hole is a waist-shaped hole, and the extending direction of the waist-shaped hole is the same as the extending direction of the annular chamber.

6. The driving wheel with a hollow structure according to claim 5, characterized in that: In a radial direction perpendicular to the annular direction of the main body, the longitudinal through hole is close to the middle of the annular chamber and has a gap between the inner annular surface and the outer annular surface of the annular chamber.

7. The driving wheel with a hollow structure according to claim 1, characterized in that: The main body is symmetrically provided with annular reinforcing ribs on both sides close to the outer annular surface.

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