Wear-resistant compound gear

Abstract

The utility model discloses a wear-resistant compound gear which comprises a gear body and a wear-resistant block, an embedding groove is formed in the rear end of the gear body, the wear-resistant block is embedded in the embedding groove, and the thickness of the wear-resistant block is larger than the depth of the embedding groove, so that one end of the wear-resistant block extends out of the embedding groove and is located on the rear side of the gear body. The end portion of one end of the anti-abrasion block is located on the outer side of the caulking groove and makes contact with external equipment, when the gear body rotates, the external equipment rubs against the end portion of the anti-abrasion block, the anti-abrasion block can be made of materials which are more resistant to abrasion compared with the gear body, and after the part, exposed out of the caulking groove, of the anti-abrasion block is abraded, the anti-abrasion block can be replaced in time. Therefore, the gear body is prevented from being abraded.

Description

Technical Field

[0001] The utility model relates to the field of gears, and particularly relates to a wear-resistant composite gear. Background Art

[0002] Gears are commonly used parts in mechanical transmissions. Gears are made of high-quality high-strength alloy steel and are surface carburized and hardened, with strong load-bearing capacity and long service life. In actual applications, helical gears are widely used in high-speed and heavy-load occasions because of their characteristics such as smooth transmission, less impact, vibration and noise. In the actual production and manufacturing process, the end faces of gears at some positions will come into contact with other parts of the equipment. When the gears rotate at high speed, the end faces of the gears will be worn due to friction with the equipment. After the gears are worn, the accuracy is affected, vibrations are likely to occur, and they cannot operate smoothly. How to reduce the wear of gears and reduce the losses caused by gear wear is the direction of research and development. Content of the Utility Model

[0003] The purpose of the utility model is to provide a wear-resistant composite gear, which has the advantage of separating the gear end face from the equipment to prevent the gear end face from being worn.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions:

[0005] A wear-resistant composite gear includes a gear body and a wear-resistant block. An embedding groove is provided at the rear end of the gear body, and the wear-resistant block is embedded in the embedding groove. The thickness of the wear-resistant block is greater than the depth of the embedding groove, so that one end of the wear-resistant block extends out of the embedding groove and is located at the rear side of the gear body.

[0006] Preferably, the gear body includes an external gear and a cylindrical internal gear. The external gear is sleeved on the outer side of the rear end of the internal gear and is fixedly connected to the rear gear. An external connection part is fixedly provided at the rear end of the external gear. The external connection part is located at the rear side of the rear end of the internal gear. The groove formed by surrounding the external connection part is the embedding groove.

[0007] Preferably, a bevel edge is provided at the rear end of the embedding groove. The diameter of the end of the bevel edge away from the embedding groove is greater than the diameter of the embedding groove to facilitate the embedding of the wear-resistant block.

[0008] Preferably, the wear-resistant block is in an annular shape. The outer diameter of the wear-resistant block is the same as the inner diameter of the embedding groove. The inner diameter of the wear-resistant block is the same as the inner diameter of the internal gear. The inner circle of the wear-resistant block and the inner circle of the internal gear are on the same straight line.

[0009] Preferably, bevel edges are also provided at both ends of the inner circle of the wear-resistant block. The diameter of the end of the bevel edge is greater than the diameter of the inner circle of the wear-resistant block.

[0010] The beneficial effects of the present utility model are as follows: The manufacturing difficulty and cost of the wear-resistant block are lower than those of the gear body. By embedding the wear-resistant block on one side of the gear body, the wear-resistant block directly contacts other parts of the equipment, and wear occurs on the wear-resistant block. When the part of the wear-resistant block protruding on one side of the gear body is completely worn, the wear-resistant block can be taken out and replaced, which can reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of the embodiment;

[0012] Figure 2 is a schematic structural diagram of another perspective of the embodiment;

[0013] Figure 3 is a schematic structural diagram of the embodiment after removing the wear-resistant block;

[0014] Figure 4 is a sectional structural diagram of the embodiment.

[0015] Reference numerals: 1, gear body; 2, wear-resistant block; 3, embedding groove; 4, external gear; 5, internal gear; 6, external connection part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The following is only the preferred embodiment of the present utility model, and the protection scope is not limited to this embodiment. All technical solutions falling within the concept of the present utility model shall belong to the protection scope of the present utility model. The same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "bottom" and "top", "inner" and "outer" refer to the directions towards or away from the geometric center of a specific component respectively.

[0017] As Figures 1 to 4 shown, a wear-resistant composite gear includes a gear body 1 and a wear-resistant block 2. The gear body 1 includes an external gear 4 and a cylindrical internal gear 5. The external gear 4 and the internal gear 5 are integrally designed, and the external gear 4 is sleeved on the rear end of the internal gear 5, and the rearmost ends of the external gear 4 and the internal gear 5 are on the same plane.

[0018] At the rear end of the external gear 4, an external connection part 6 is fixedly installed. The external connection part 6 is annular as a whole. The inner circle of the external connection part 6 forms the side wall of the embedding groove 3, and the rear end face of the internal gear 5 is the bottom surface of the embedding groove 3. The anti-wear block 2 is embedded in the embedding groove 3. The anti-wear block 2 is also annular, and the outer diameter of the anti-wear block 2 is the same as the inner diameter of the embedding groove 3. The anti-wear block 2 needs to be installed in the embedding groove 3 by external pressurization. To facilitate the installation of the anti-wear block 2, a bevel edge is provided at the rear end of the embedding groove 3. The diameter of the end of the bevel edge away from the embedding groove 3 is larger than the diameter of the embedding groove 3. The bevel edge plays a guiding role, and during the installation of the anti-wear block 2, centering can be carried out more conveniently.

[0019] The inner diameter of the anti-wear block 2 is the same as the inner diameter of the internal gear 5, and the inner circles of the anti-wear block 2 and the internal gear 5 are on the same straight line. When installing a gear shaft or other parts passing through the inner circle of the internal gear 5, these parts can also pass through the inner circle of the anti-wear block 2 without affecting the installation. At both ends of the inner circle of the anti-wear block 2, bevel edges are also provided. The diameter of the end of the bevel edge is larger than the diameter of the inner circle of the anti-wear block 2. The bevel edge plays a guiding role and facilitates the insertion of external parts.

[0020] The thickness of the anti-wear block 2 is greater than the depth of the embedding groove 3, so that one end of the anti-wear block 2 extends out of the embedding groove 3 and is located at the rear side of the gear body 1. The part of the anti-wear block 2 exposed outside the embedding groove 3 directly contacts external equipment, and it is the anti-wear block 2 that is worn during abrasion. The material of the anti-wear block 2 can be selected as some materials that are less prone to wear and have lower costs compared to the material of the gear body 1, such as copper.

[0021] After the part of the anti-wear block 2 exposed outside the embedding groove 3 is completely worn, the anti-wear block 2 can be taken out of the embedding groove 3 and a new anti-wear block 2 can be replaced. Since the cost of the anti-wear block 2 is relatively low and the manufacturing difficulty is simpler compared to the gear body 1, therefore, by using the anti-wear block 2 to replace the gear body 1 for abrasion, the cost can be greatly reduced.

[0022] In the specific embodiments described above, the technical problems solved, technical solutions, and beneficial effects of the present utility model are further described in detail. It should be understood that the above description is only for the specific embodiments of the present utility model and does not limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wear-resistant composite gear, comprising a gear body (1) and a wear-resistant block (2), characterized in that: The rear end of the gear body (1) is provided with an embedding groove (3), and the anti-wear block (2) is embedded in the embedding groove (3). The thickness of the anti-wear block (2) is greater than the depth of the embedding groove (3), so that one end of the anti-wear block (2) extends out of the embedding groove (3) and is located at the rear side of the gear body (1).

2. A wear-resistant composite gear according to claim 1, characterized in that: The gear body (1) comprises an external gear (4) and a cylindrical internal gear (5); the external gear (4) is sleeved on the outer side of the rear end of the internal gear (5) and is fixedly connected to the rear gear; an external connection portion (6) is fixedly provided at the rear end of the external gear (4); the external connection portion (6) is located at the rear side of the rear end of the internal gear (5); and a groove formed by the external connection portion (6) is the embedded groove (3).

3. A wear-resistant composite gear according to claim 2, characterized in that: The rear end of the embedding groove (3) is provided with a bevel, and the diameter of the end of the bevel away from the embedding groove (3) is larger than the diameter of the embedding groove (3), so as to facilitate the embedding of the anti-wear block (2).

4. A wear-resistant composite gear according to claim 3, characterized in that: The anti-wear block (2) is in the shape of a ring. The outer diameter of the anti-wear block (2) is the same as the inner diameter of the embedded groove (3). The inner diameter of the anti-wear block (2) is the same as the inner diameter of the internal gear (5). The inner circle of the anti-wear block (2) and the inner circle of the internal gear (5) are on the same straight line.

5. A wear-resistant composite gear according to claim 4, characterized in that: Both ends of the inner circle of the anti-wear block (2) are also provided with bevels, and the diameter of the end of the bevel is greater than the diameter of the inner circle of the anti-wear block (2).

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