Wear-resistant chain wheel body
The nickel-chromium-molybdenum wear-resistant layer and tungsten carbide protective coating formed by symmetric cladding welding solve the problem of easy wear of the sprocket tooth surface and chain socket, and significantly extend the service life of the sprocket.
Patent Information
- Application Number
- CN202420333935.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-23
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-02-23
AI Technical Summary
The existing sprocket tooth surface and chain socket are easily worn and affecting their service life.
A nickel-chromium-molybdenum wear-resistant layer formed by symmetric cladding welding is sprayed with tungsten carbide protective coating on the sprocket bumps and chain socket surfaces.
It significantly improves the strength of the wear-resistant layer, reduces friction and wear, and extends the service life of the sprocket.
Smart Images
Figure CN222992077U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sprockets, in particular to a wear-resistant sprocket body. Background Technique
[0002] In the existing life, a sprocket is a wheel with embedded toothed chain links, which meshes with the head and the accurately pitched blocks on the chain link or cable. Sprockets are widely used in mechanical transmissions in industries such as chemical industry, textile machinery, escalators, wood processing, multi-storey parking garages, agricultural machinery, food processing, instrumentation, petroleum, etc. The sprocket material should ensure that the teeth have sufficient strength and wear resistance. Therefore, the sprocket tooth surface is generally heat-treated to reach a certain hardness.
[0003] The tooth surface and chain socket of the sprocket in the prior art are easily worn, affecting the use. For this reason, we propose a new type of wear-resistant sprocket body. Content of the Utility Model
[0004] The technical problem to be solved by the utility model is to overcome the above technical defects and provide a wear-resistant sprocket body that is convenient to operate and use, can effectively extend the service life, and ensure the use effect.
[0005] To solve the above technical problem, the technical solution provided by the utility model is: a wear-resistant sprocket body, including a wheel body, a sprocket connecting shaft is arranged in the middle of the wheel body, a first sprocket body and a second sprocket body are respectively arranged on the sprocket connecting shaft, the first sprocket body and the second sprocket body have the same structure, the first sprocket body includes two groups of symmetrically arranged sprocket convex blocks, a chain socket is formed between the two groups of symmetrically arranged sprocket convex blocks, and multiple groups of sprocket convex blocks are evenly arranged along the circumferential direction of the sprocket connecting shaft. Connecting wheel shafts are arranged at both ends of the wheel body, and a number of engaging teeth are concavely arranged along the circumferential direction of the connecting wheel shaft. A wear-resistant layer is arranged in the chain socket, and protective coatings are sprayed on both the sprocket convex blocks and the chain socket.
[0006] As an improvement, the wear-resistant layer is formed by symmetric cladding surfacing, and the material of the wear-resistant layer is nickel-chromium-molybdenum HRC50-70.
[0007] As an improvement, the thickness of the wear-resistant layer is greater than 20 mm.
[0008] As an improvement, the protective coating is a tungsten carbide sprayed protective layer.
[0009] The advantages of the utility model compared with the prior art are as follows: in this application, the strength of the wear-resistant layer can be greatly improved through the symmetric cladding surfacing setting of the wear-resistant layer, ensuring the use effect of the wheel body. At the same time, a protective coating is additionally arranged on the outer surfaces of the sprocket convex blocks and the chain socket, which can greatly improve its performance, reduce friction and wear, and extend its service life. Description of the Drawings
[0010] Figure 1 It is a schematic structural diagram of a wear-resistant sprocket body.
[0011] Figure 2 It is a schematic structural diagram of the front view of a wear-resistant sprocket body.
[0012] Figure 3 It is a schematic structural diagram of the wear-resistant layer.
[0013] As shown in the figure: 1. Wheel body; 2. Sprocket connecting shaft; 3. Sprocket convex block; 4. Chain socket; 5. Connecting wheel shaft; 6. Locking teeth; 7. Wear-resistant layer. Specific implementation manners
[0014] The following further describes the specific implementation manners of the present utility model with reference to the accompanying drawings. The same components are denoted by the same reference numerals.
[0015] 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 accompanying drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.
[0016] It should be noted that when an element is referred to as being "fixedly provided on" another element, it can be directly on the other element or there may be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.
[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this utility model belongs. The terms used in the description of this utility model in this specification are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.
[0018] In order to make the content of this utility model easier to be clearly understood, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this utility model.
[0019] Please refer specifically to the attached Figures 1-3 , A wear-resistant sprocket body includes a wheel body 1, and a sprocket connecting shaft 2 is provided in the middle of the wheel body 1.
[0020] For convenient use, a first sprocket body and a second sprocket body are respectively provided on the sprocket connecting shaft 2. The first sprocket body and the second sprocket body have the same structure. The first sprocket body includes two groups of symmetrically arranged sprocket bumps 3. A sprocket groove 4 is formed between the two groups of symmetrically arranged sprocket bumps 3. And multiple groups of sprocket bumps 3 are evenly arranged along the circumferential direction of the sprocket connecting shaft 2, so as to facilitate the simultaneous installation of two groups of chains for use, greatly increasing the service strength.
[0021] Connecting wheel shafts 5 are provided at both ends of the wheel body 1. A number of engaging teeth 6 are concavely provided along the circumferential direction of the connecting wheel shaft 5, which facilitates different assembly uses according to needs.
[0022] In this application, in order to increase the wear resistance effect, a wear-resistant layer 7 is provided in the sprocket groove 4, and a protective coating is provided on the sprocket bump 3. The wear-resistant layer 7 is formed by symmetric cladding surfacing. More specifically, the sprocket groove is welded with a transition welding wire as a 3mm backing weld. After welding, the sprocket is machined on a machining center for overall finishing of the sprocket to ensure that the overall quenched and tempered hardness of the sprocket is HB290 - 320. At this time, symmetric cladding surfacing is carried out. The wear-resistant surfacing layer is welded with nickel-chromium-molybdenum HRC50 - 70. The thickness of the wear-resistant surfacing layer is not less than 20mm after ensuring the completion of finishing. During the welding process, the temperature of the sprocket body is ensured to be controlled at 300 - 320 °C. After one-time welding is completed, it is placed in a heat preservation furnace for no less than 3 hours and then slowly cooled with the furnace. A protective coating is sprayed, specifically a tungsten carbide spray protective layer, which can protect the metal surface, reduce its surface wear, extend the service life, and increase the surface strength, thereby reducing the damage of the sprocket body.
[0023] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.
[0024] The standard parts used in this utility model can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt the conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt the conventional models in the prior art. In addition, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.
[0025] The above describes the present utility model and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and, without departing from the creative purpose of the present utility model, design similar structural manners and embodiments to this technical solution without creative efforts, they shall all fall within the protection scope of the present utility model.
Claims
1. A wear-resistant sprocket body, characterized in that: It comprises a wheel body (1), a sprocket connecting shaft (2) is provided in the middle of the wheel body (1), a first sprocket body and a second sprocket body are respectively provided on the sprocket connecting shaft (2), and the first sprocket body and the second sprocket body have the same structure; The first sprocket body comprises two groups of symmetrically arranged sprocket protrusions (3), a chain nest (4) is formed between the two groups of symmetrically arranged sprocket protrusions (3), a plurality of groups of sprocket protrusions (3) are evenly arranged along the circumferential direction of the sprocket connecting shaft (2), both ends of the wheel body (1) are provided with connecting wheel shafts (5), a plurality of teeth (6) are concavely arranged on the connecting wheel shaft (5) along its circumferential direction, a wear-resistant layer (7) is arranged in the chain nest (4), and a protective coating is sprayed on the sprocket protrusions (3) and the chain nest (4).
2. A wear-resistant sprocket body according to claim 1, characterized in that: The wear-resistant layer (7) is formed by symmetrical cladding and build-up welding, and the material of the wear-resistant layer (7) is nickel-chromium-molybdenum HRC50-70.
3. A wear-resistant sprocket body according to claim 2, characterized in that: The wear-resistant layer (7) has a thickness greater than 20 mm.
4. The wear-resistant sprocket body according to claim 1, characterized in that: The protective coating is a tungsten carbide spray protective layer.