Wear-resistant combined gear

Abstract

The utility model discloses a wear-resistant combined gear which comprises a gear body. A limiting plate groove is formed in the gear body in an extending mode from the inner ring to the outer ring, a limiting plate is arranged in the limiting plate groove in a covering mode, a plug vertically extends out of the limiting plate along the edge position, the plug and the outer gear plate are of a guide contact structure, and outer teeth are integrally connected to the outer gear plate along the outer ring position. And the outer teeth and the inner teeth of the outer ring of the gear main body are in a tight fit structure. The gear structure with the two sets of outer teeth clamped and matched with the inner teeth is adopted for completing the meshing transmission process, the outer teeth replace the inner teeth to serve as corner easily-damaged replacement structures in the meshing process, and the technical problem that normal operation cannot be achieved due to local cracking of the outer side position of the gear can be solved. Meanwhile, the combined gear can finish a dispersed stress process through a stacking combined structure of the limiting plate, the limiting groove and the outer toothed plate; and meanwhile, the production cost can be effectively reduced due to replaceable combined parts.

Description

Technical Field

[0001] The utility model belongs to the technical field of industrial gear structures, and particularly relates to a wear-resistant combined gear. Background Art

[0002] Gears, as key components of mechanical transmission, are widely used in industries such as automotive, machinery manufacturing, instrumentation, and aerospace. The gear industry has become the largest sector in China's mechanical components sector. Gears are widely used and are crucial components in a wide range of machinery, including machine tools, aircraft, ships, and everyday items like watches and electric fans. In terms of market demand and production scale, China's gear industry has surpassed Italy in global ranking, ranking fourth.

[0003] Due to the limitations of my country's mechanical processing technology and heat treatment technology, the gear shaft hole is severely worn, especially under frequent impact loads, which is more likely to cause wear between the gear shaft hole and the shaft. In the case of wear, welding, turning, milling and other processing methods are used for simple repairs. The processing is difficult and complicated, the cost is high, especially the repaired gears are no longer heat treated, which causes the repaired gears to have poor wear resistance and greatly reduces the service life. Therefore, the repaired gears can generally only be used for a very short period of time. In some industries, the gears are even directly discarded without repair, which will cause a lot of material waste.

[0004] If an independent gear structure has cracks or safety hazards during use, it needs to be replaced immediately. Therefore, compared with a large gear structure, the cost is expensive. Therefore, the utility model provides a wear-resistant combined gear. The present application adopts a gear structure composed of two sets of external teeth clamped together with internal teeth to complete the meshing transmission process. During the meshing process, the external teeth replace the internal teeth as a replacement structure for the vulnerable corners, which can solve the technical problem that the outer side of the gear cannot operate normally due to local cracks. At the same time, the combined gear can complete the decentralized acceptance process through the stacking combination structure of the limit plate, the limit groove and the external tooth plate; at the same time, the replaceable combination components can effectively reduce production costs. Summary of the Invention

[0005] In order to achieve the above-mentioned purpose, the technical solution of the present utility model is as follows:

[0006] A wear-resistant combination gear comprises a gear body; the gear body is provided with a limit plate groove extending from the inner ring to the outer ring, the limit plate groove is covered with a limit plate, the limit plate is provided with a plug extending vertically along the edge position, the plug and the outer gear plate are in a guiding contact structure, the outer gear plate is integrally connected with external teeth along the outer ring position, and the external teeth are in a tightly fitting structure with the inner teeth of the outer ring of the gear body.

[0007] Furthermore, the limit plate groove and the limit plate are both of a special hexagonal structure, and the limit plate groove is provided with a fixing bolt hole along the corner position, and a bolt is inserted into the fixing bolt hole, and the bolt extends along the guide bolt hole of the limit plate and the outer gear plate.

[0008] Furthermore, a snap ring is integrally installed along the inner ring of the limit plate, and the snap ring is snap-fitted and docked with a limit plate slot provided on the inner ring of the gear body.

[0009] Furthermore, a cover plate is paved on the outside of the outer gear plate, and a clamping edge is vertically bent on the outer ring of the cover plate, and the clamping edge is clamped and docked with the cover plate clamping groove of the stepped section of the outer gear plate.

[0010] Furthermore, the outer diameters of the inner teeth and the outer teeth are equal.

[0011] Furthermore, the outer side of the corner structure extending from the outer ring of the limiting plate is filled with a wear-resistant layer.

[0012] The beneficial effects of the utility model are:

[0013] Compared to existing technologies, this application utilizes a gear structure composed of two sets of external teeth clamped together with internal teeth to complete the meshing transmission process. During the meshing process, the external teeth serve as a replacement structure for the internal teeth, which are easily damaged at the corners. This can solve the technical problem of the gear's outer edge not being able to operate normally due to localized cracking. At the same time, the combined gear can be stacked together through a limit plate, limit slots, and external tooth plate to complete a decentralized acceptance process. At the same time, the interchangeable combination of components can effectively reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 For this utility model

[0015] Figure 2 For this utility model

[0016] Figure 3 For this utility model

[0017] List of Figure Symbols:

[0018] 1 is the combined gear, 2 is the fixing bolt hole, 3 is the limit plate slot, 4 is the gear body, 5 is the cover plate slot, 6 is the gear shaft hole, 7 is the limit plate slot, 8 is the plug, 9 is the limit plate, 10 is the snap ring, 11 is the cover plate, and 12 is the outer gear plate;

[0019] 1-1 is the inner tooth and 1-2 is the outer tooth. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0021] like Figure 1 、 Figure 2 and Figure 3 As shown, a wear-resistant combination gear comprises a gear body; the gear body 4 is provided with a limit plate groove 7 extending from the inner ring to the outer ring, the limit plate groove 7 is covered with a limit plate 9, the limit plate 9 has a plug 8 extending vertically along the edge, the plug 8 forms a guiding contact structure with the outer gear plate 12, the outer gear plate 12 is integrally connected with outer teeth 1-2 along the outer ring, and the outer teeth 1-2 form a tightly fitting structure with the inner teeth 1-1 of the outer ring of the gear body 4. Among them, the gear body 4 serves as the main structure of the combination gear, the limit plate 9 is installed in the limit plate groove 7 provided in the gear body 4 itself, and the outer gear plate 12 is added to the outer end surface of the limit plate 9; the stacking structure and the structure of the limit plate 9 and the limit plate groove 7 that increases the force diffusion area can further improve the installation stability of the combination gear, while also achieving uniform force distribution, avoiding local force deformation of the gear caused by local force. The combined structure of the outer gear plate 12 and the outer teeth 1-2 and inner teeth 1-1 of the gear body 4 can improve the meshing stability of the gears. At the same time, accidental cracking at the corners can be solved by subsequently replacing the outer teeth 1-2.

[0022] like Figure 1 、 Figure 2 and Figure 3 As shown, the limiting plate slot 7 and the limiting plate 9 both have a special hexagonal structure. The limiting plate slot 7 has a fixing bolt hole 2 formed along the corner. The fixing bolt hole 2 is inserted into the bolt 8, which extends along the guide bolt holes of the limiting plate 9 and the outer gear plate 12. The bolt 8 can further guide the limiting plate 9 and the outer gear plate 12.

[0023] like Figure 1 、 Figure 2 and Figure 3 As shown, the limit plate 9 is integrally mounted with a snap ring 10 along the inner ring, and the snap ring 10 is snap-fitted into the limit plate slot 3 provided on the inner ring of the gear body 4. The snap ring 10, as a snap structure at the inner ring, can further stabilize the connection between the limit plate 9 and the gear body 4.

[0024] like Figure 1 、 Figure 2 and Figure 3 As shown, the outer gear plate 12 is covered with a cover plate 11. The outer ring of the cover plate 11 is vertically bent with a snap-fit ​​edge. The snap-fit ​​edge snaps into place along the outer gear plate 12 and into the cover plate snap-fit ​​groove 5 of the stepped section of the outer teeth 1-2. The cover plate 11 serves as a protective covering for the outer gear plate 12, and the snap-fitting process is completed by the snap-fit ​​edge.

[0025] like Figure 1 、 Figure 2 and Figure 3 As shown, the outer diameters of the inner teeth 1-1 and the outer teeth 1-2 are equal, wherein the same size can be adapted to the size of the corresponding meshing gears.

[0026] like Figure 1 、 Figure 2 and Figure 3 As shown, the outer side of the corner structure extending from the outer ring of the limit plate 9 is filled with a wear-resistant layer, wherein the wear-resistant layer can increase the service life of the outer teeth 1-2.

[0027] It should be noted that the above content only illustrates the technical idea of ​​the utility model and cannot be used to limit the protection scope of the utility model. For ordinary technicians in this technical field, they can make several improvements and modifications without departing from the principles of the utility model. These improvements and modifications all fall within the protection scope of the claims of the utility model.

Claims

1. A wear-resistant composite gear, comprising a gear body; characterized in that: The gear body (4) is provided with a limit plate groove (7) extending from the inner ring to the outer ring, the limit plate groove (7) is covered with a limit plate (9), the limit plate (9) is provided with a plug (8) extending vertically along the edge position, the plug (8) and the outer gear plate (12) are in a guiding contact structure, the outer gear plate (12) is integrally connected with outer teeth (1-2) along the outer ring position, and the outer teeth (1-2) and the inner teeth (1-1) of the outer ring of the gear body (4) are in a tightly fitting structure.

2. The wear-resistant combined gear according to claim 1, characterized in that: The limiting plate groove (7) and the limiting plate (9) are both of a special-shaped hexagonal structure. The limiting plate groove (7) is provided with a fixing bolt hole (2) along the corner position. A plug (8) is inserted into the fixing bolt hole (2). The plug (8) extends along the guide bolt hole of the limiting plate (9) and the outer gear plate (12).

3. The wear-resistant combined gear according to claim 2, characterized in that: The limit plate (9) is integrally mounted with a snap ring (10) along the inner ring position, and the snap ring (10) is snap-fitted and docked with a limit plate snap groove (3) provided on the inner ring of the gear body (4).

4. The wear-resistant combined gear according to claim 1, characterized in that: The outer side of the outer gear plate (12) is paved with a cover plate (11), and the outer ring of the cover plate (11) is vertically bent to have a clamping edge, and the clamping edge is clamped and docked with the cover plate clamping groove (5) of the stepped section of the outer gear plate (1-2).

5. The wear-resistant combined gear according to claim 1, characterized in that: The outer diameters of the inner teeth (1-1) and the outer teeth (1-2) are equal.

6. The wear-resistant combined gear according to claim 1, characterized in that: The outer side of the corner structure extending from the outer ring of the limiting plate (9) is filled with a wear-resistant layer.

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