Gear

Abstract

The utility model discloses a gear which comprises a gear body and a bearing, the bearing comprises a bearing outer ring, the outer surface of the bearing outer ring is provided with periodically distributed groove textures, the gear body comprises an annular flange, and the inner surface of the annular flange is provided with protruding textures corresponding to the groove textures of the bearing outer ring. The groove textures and the protruding textures are fixedly connected in a clamping mode, the groove textures and the protruding textures are curve-shaped, preferably arc-shaped, and the height of the protruding textures is matched with the depth of the groove textures. The bearing outer ring is made of a Gr15 material, and the hardness of the bearing outer ring reaches HRC 60-63.5 through quenching treatment. Through the clamping design of the concave-convex textures, stable connection of the gear and the bearing is achieved, the assembly process is simplified, and the gear bearing is suitable for high-load and high-precision mechanical equipment.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear manufacturing technical field especially relates to a gear with concave-convex cooperation texture structure. BACKGROUND

[0002] The separation design of gear and bearing is a common structure in existing mechanical transmission device, and this mode needs to rely on fastener or welding to realize connection in the assembly process. This design meets the basic needs of traditional machinery, but has problems of complex assembly and unstable connection in high load and high precision equipment, and is easy to cause loosening, wear or transmission efficiency reduction due to long-term operation.

[0003] The bearing outer ring in the prior art usually adopts smooth outer surface design, which cannot realize direct clamping connection with the gear body, which limits the connection reliability and structural stability. Especially under high vibration working condition, the deficiency of this design is more obvious, which easily affects the overall performance and service life of the equipment.

[0004] Therefore, the prior art needs an improved scheme to optimize the connection mode of gear and bearing, improve the combination stability and adapt to high load and high precision working conditions. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problems: overcome the defect that the separation design of gear and bearing in the prior art leads to complex assembly, unstable connection and insufficient adaptability to high load working conditions, and provide a gear structure that realizes concave-convex cooperation connection through the groove texture of bearing outer ring and the raised texture of annular retaining edge of gear body, so as to improve the assembly efficiency, combination stability and adaptability.

[0006] The utility model solves the technical problems by adopting the following technical scheme: a gear, comprising a gear body and a bearing, the bearing comprises a bearing outer ring, the outer surface of the bearing outer ring has periodic groove texture, the gear body comprises an annular retaining edge, the inner surface of the annular retaining edge has raised texture corresponding to the groove texture of the bearing outer ring, the groove texture and the raised texture are fixedly connected in a clamping mode to enhance the combination stability between the gear and the bearing.

[0007] Further, the shape of the groove texture and the raised texture is curved, the curved texture is arc-shaped, the curvature of the arc-shaped texture is a fixed value, and the radius of curvature is 5-10mm.

[0008] Further, the depth of the groove texture is 0.5-1mm, the height of the raised texture is equal to the depth of the groove texture, so as to ensure the close cooperation of the concave-convex texture.

[0009] Further, the bearing outer ring is made of Gr15 material and is quenched to have a hardness of HRC 60-63.5, so as to improve the wear resistance of the bearing outer ring.

[0010] Further, the annular retaining edge is integrally formed with the gear body, the gear body is fixedly connected with the bearing through the clamping mode, and the precise positioning is provided through the concave-convex texture distribution.

[0011] The utility model discloses the beneficial effect is:

[0012] The utility model discloses a groove texture is set to the outer surface of bearing outer ring, and the corresponding convex texture is set to the inner surface of the annular retaining edge of gear body, realizes the clamping connection mode between gear and bearing, improves the connection stability and assembly accuracy.

[0013] The utility model discloses the shape of groove texture and convex texture is curve, preferably arc, makes the cooperation of concave-convex texture more closely, has strengthened the operation reliability of gear assembly.

[0014] The utility model discloses the curvature of groove texture and convex texture is fixed value, and its curvature radius range is 5-10mm, has guaranteed the consistency of cooperation shape, has effectively avoided the generation of assembly error.

[0015] The utility model discloses the depth of groove texture is 0.5-1mm, and the height of convex texture and the depth of groove texture are matched, further improve the close degree of cooperation and connection, improve the structural stability of gear assembly.

[0016] The utility model discloses the design of clamping connection, has saved the fastener or welding technology of extra, has simplified the assembly process, has reduced the manufacturing cost and maintenance difficulty simultaneously.

[0017] The utility model discloses the bearing outer ring is made of Gr15 material and is quenched to have a hardness of HRC 60-63.5, so as to improve the wear resistance of the bearing outer ring and the fatigue resistance, prolongs the service life of gear assembly.

[0018] The utility model discloses the periodicity distribution design of groove texture and convex texture, has optimized the stress distribution between gear and bearing, has improved the stability and use reliability of whole transmission device.

[0019] The utility model discloses the gear body and bearing are connected through the clamping mode, and are equipped with sealing structure, effectively prevent lubricating oil leakage and external impurity from entering, guarantee the cleanliness and operating performance of gear assembly. ACCURACY OF DRAWINGS

[0020] Figure 1 It is the front view of a gear of the utility model.

[0021] Figure 2 is a sectional view of the gear along the direction A-A of the utility model;

[0022] Figure 3 is a front view of the gear body of the gear in a bearing-free state of the utility model;

[0023] Figure 4 is a side view of the gear body of the gear in a bearing-free state of the utility model;

[0024] Figure 5 is a front view of the bearing of the utility model;

[0025] Figure 6 is a side view of the bearing of the utility model;

[0026] Fig. 1 - gear body; 11 - annular retaining edge; 2 - bearing; 21 - bearing outer ring. DETAILED DESCRIPTION

[0027] The utility model will be further described in conjunction with the drawings. These drawings are all simplified schematic diagrams and only schematically illustrate the basic structure of the utility model, so they only show the structures related to the utility model.

[0028] As shown in Figure 1 and Figure 2 , the utility model provides a gear, including gear body 1 and bearing 2. The bearing 2 includes bearing outer ring 21, and the outer surface of the bearing outer ring is provided with periodic distribution groove texture; the gear body 1 includes annular retaining edge 11, and the inner surface of the annular retaining edge 11 is provided with the convex texture corresponding to the groove texture of the bearing outer ring 21. Through the engagement connection of groove texture and convex texture, the gear body and the bearing are closely matched, and the connection stability of the whole gear is guaranteed.

[0029] As shown in Figure 3 and Figure 4 , when the bearing is not installed, the annular retaining edge 11 of the gear body 1 is clearly visible, and the convex texture on the inner surface is periodically distributed along the circumferential direction, and the curved shape of the convex is arc-shaped. When the bearing is installed, these convex textures are engaged with the groove texture of the bearing outer ring 21 to realize accurate positioning and stable connection.

[0030] As shown in Figure 5 and Figure 6As shown, the bearing 2 is composed of a bearing outer ring 21 and its outer surface groove texture. The groove texture is curved, preferably arc-shaped, with a curvature radius of 5-10 mm, and the depth of the groove is 0.5-1 mm, matching the height of the raised texture of the annular retaining rim 11. The bearing is connected with the raised texture of the gear body 1 through the groove texture, realizing the close fit of the bearing and the gear.

[0031] In the actual work of the gear, the gear body 1 is connected with the outer ring groove texture of the bearing 2 through the raised texture of the annular retaining rim 11, forming a stable connection mode. This structure can maintain the stability between the bearing and the gear body under the condition of high-speed rotation or high load of the gear, avoiding loose or slipping connection. At the same time, the periodic distribution of the groove texture and the raised texture can uniformly disperse the load, thereby ensuring the long-time smooth operation of the gear assembly.

[0032] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A gear wheel comprising a gear wheel body (1) and a bearing (2), characterized in that: The bearing (2) comprises a bearing outer ring (21), an outer surface of the bearing outer ring having a periodic groove texture, the gear body (1) comprises an annular flange (11), an inner surface of the annular flange (11) having a convex texture corresponding to the groove texture of the bearing outer ring (21).

2. A gear as claimed in claim 1, wherein: The groove texture and the convex texture are in a curved shape.

3. A gear as claimed in claim 2, wherein: The curved texture is in an arc shape.

4. A gear as claimed in claim 3, wherein: The arc-shaped texture has a fixed curvature, and a radius of curvature is 5-10 mm.

5. A gear as defined in claim 2, wherein: The groove texture has a depth of 0.5-1 mm, and the height of the convex texture is equal to the depth of the groove texture.

6. A gear as defined in claim 1, wherein: The groove texture of the bearing outer ring (21) and the convex texture of the annular flange (11) are fixedly connected in a clamping manner.

7. A gear as defined in claim 1, wherein: The bearing (2) comprises a bearing outer ring (21) made of Gr15 material with a hardness of HRC 60-63.5.

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