Connecting rod for excavator bucket

By applying multiple layers of coating to the surface of the connecting rod of the excavator bucket, including an acrylic anti-rust coating, a red iron oxide alkyd anti-rust coating, a tungsten carbide coating, and a nano chromium oxide coating, the problem of easy damage to the connecting rod is solved, and a longer service life is achieved.

CN224078270UActive Publication Date: 2026-04-03CHANGZHOU JINDUN ENG MASCH MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-21
Publication Date
2026-04-03

AI Technical Summary

Technical Problem

The existing excavator bucket connecting rods lack wear-resistant and rust-proof mechanisms, resulting in a shortened service life.

Method used

A rust-proof layer and a wear-resistant layer are applied to the surface of the connecting rod of the excavator bucket. The rust-proof layer consists of an acrylic rust-proof coating and an iron oxide alkyd rust-proof coating, while the wear-resistant layer consists of a tungsten carbide coating and a nano chromium oxide coating. The multiple coatings protect each other to improve the rust resistance and wear resistance of the connecting rod.

Benefits of technology

The multi-layer coating design significantly improves the wear resistance and rust prevention of the connecting rods used in excavator buckets, extending their service life.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224078270U_ABST
Patent Text Reader

Abstract

The connecting rod for the excavator bucket comprises a connecting rod body, an anti-rust layer is arranged on the surface of the connecting rod body, the anti-rust layer comprises an acrylic acid anti-rust coating and an iron red alcohol acid anti-rust coating, a wear-resistant layer is arranged on the other face of the anti-rust layer, and the wear-resistant layer comprises a tungsten carbide coating and a nanometer chromic oxide coating. The surface of the connecting rod body is coated with the iron red alcohol acid antirust coating, the other face of the iron red alcohol acid antirust coating is coated with the acrylic acid antirust coating, the thickness of the acrylic acid antirust coating is the same as that of the iron red alcohol acid antirust coating, and the thickness of the iron red alcohol acid antirust coating is one hundred fifty to two hundred fifty micrometers. According to the wear-resistant connecting rod, the wear-resistant layer is arranged, the tungsten carbide coating contained in the wear-resistant layer can carry out first-layer wear-resistant protection treatment on the connecting rod body, and the nano chromium oxide coating can carry out second-layer wear-resistant protection treatment on the connecting rod body after the tungsten carbide coating is damaged, so that the wear resistance of the whole connecting rod body is effectively improved.
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Description

Technical Field

[0001] This utility model relates to the field of excavator technology, specifically to a connecting rod for an excavator bucket. Background Technology

[0002] Excavators, also known as diggers or excavator loaders, are heavy-duty construction machinery used for digging, moving, and transporting soil and other materials. They typically consist of a chassis, a rotating platform, a boom system, and a working device. However, the connecting rods of existing excavator buckets are prone to damage during use due to the lack of wear-resistant and rust-proof mechanisms, thus reducing their service life. Utility Model Content

[0003] The purpose of this invention is to provide a connecting rod for an excavator bucket to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a connecting rod for an excavator bucket, comprising a connecting rod body, wherein the surface of the connecting rod body is provided with an anti-rust layer, and the anti-rust layer comprises an acrylic anti-rust coating and an iron oxide alkyd anti-rust coating, and the other side of the anti-rust layer is provided with a wear-resistant layer, wherein the wear-resistant layer comprises a tungsten carbide coating and a nano chromium oxide coating.

[0005] Preferably, the iron oxide alkyd anti-rust coating is applied to the surface of the connecting rod body, and the acrylic anti-rust coating is applied to the other side of the iron oxide alkyd anti-rust coating.

[0006] Preferably, the acrylic anti-rust coating and the iron oxide alkyd anti-rust coating have the same thickness, and the thickness of the iron oxide alkyd anti-rust coating is 150 to 250 micrometers.

[0007] Preferably, the nano-chromium oxide coating is applied to the other side of the acrylic anti-rust coating, and the tungsten carbide coating is applied to the other side of the nano-chromium oxide coating.

[0008] Preferably, the tungsten carbide coating and the nano-chromium oxide coating have the same thickness, and the thickness of the tungsten carbide coating is two hundred to four hundred micrometers.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] 1. This utility model is provided with a wear-resistant layer, which includes a tungsten carbide coating that can provide the first layer of wear-resistant protection for the connecting rod body, and a nano chromium oxide coating that can provide the second layer of wear-resistant protection for the connecting rod body after the tungsten carbide coating is damaged, thereby effectively improving the overall wear resistance of the connecting rod body.

[0011] 2. This utility model is provided with a rust-proof layer, which includes an acrylic rust-proof coating that can provide the first layer of rust prevention treatment to the connecting rod body after the nano chromium oxide coating is damaged, and an iron oxide alkyd rust-proof coating that can provide the second layer of rust prevention treatment to the connecting rod body after the acrylic rust-proof coating is damaged, thereby effectively improving the overall rust resistance of the connecting rod body. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram showing the connection between the anti-rust layer and the wear-resistant layer of this utility model and the connecting rod body;

[0014] Figure 3 This is a schematic diagram of the rust-proof layer structure of this utility model;

[0015] Figure 4 This is a schematic diagram of the wear-resistant layer structure of this utility model.

[0016] In the diagram: connecting rod body 1, anti-rust layer 2, acrylic anti-rust coating 21, iron oxide alkyd anti-rust coating 22, wear-resistant layer 3, tungsten carbide coating 31, nano chromium oxide coating 32. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] The connecting rod body 1, anti-rust layer 2, acrylic anti-rust coating 21, iron oxide alkyd anti-rust coating 22, wear-resistant layer 3, tungsten carbide coating 31 and nano chromium oxide coating 32 components in this application are all general standard parts or components known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. Example

[0019] Please see Figures 1-3The following technical solution is provided, specifically disclosing: a connecting rod body 1, the surface of which is provided with a rust-proof layer 2, the rust-proof layer 2 including an acrylic rust-proof coating 21 and a red iron oxide alkyd rust-proof coating 22, the red iron oxide alkyd rust-proof coating 22 being applied to the surface of the connecting rod body 1, and the acrylic rust-proof coating 21 being applied to the other side of the red iron oxide alkyd rust-proof coating 22, the acrylic rust-proof coating 21 and the red iron oxide alkyd rust-proof coating 22 having the same thickness, and the red iron oxide alkyd rust-proof coating 22 having a thickness of 150 to 250 micrometers. The rust-proof layer 2 includes an acrylic rust-proof coating 21 that can provide a first layer of rust prevention treatment to the connecting rod body 1 after the nano chromium oxide coating 32 is damaged, and a red iron oxide alkyd rust-proof coating 22 that can provide a second layer of rust prevention treatment to the connecting rod body 1 after the acrylic rust-proof coating 21 is damaged, thereby effectively improving the overall rust resistance of the connecting rod body 1. Example

[0020] Please see Figure 4 The following technical solution is provided, specifically: a wear-resistant layer 3 is provided on the other side of the anti-rust layer 2, and the wear-resistant layer 3 includes a tungsten carbide coating 31 and a nano chromium oxide coating 32. The nano chromium oxide coating 32 is applied to the other side of the acrylic anti-rust coating 21, and the tungsten carbide coating 31 is applied to the other side of the nano chromium oxide coating 32. The tungsten carbide coating 31 and the nano chromium oxide coating 32 have the same thickness, and the thickness of the tungsten carbide coating 31 is two hundred to four hundred micrometers. The wear-resistant layer 3 is provided, and the tungsten carbide coating 31 can provide the first layer of wear-resistant protection for the connecting rod body 1. The nano chromium oxide coating 32 can provide the second layer of wear-resistant protection for the connecting rod body 1 after the tungsten carbide coating 31 is damaged, thereby effectively improving the overall wear resistance of the connecting rod body 1.

[0021] The working principle of this application is as follows: A wear-resistant layer 3 is provided, which includes a tungsten carbide coating 31 that provides a first layer of wear-resistant protection for the connecting rod body 1, and a nano-chromium oxide coating 32 that provides a second layer of wear-resistant protection for the connecting rod body 1 after the tungsten carbide coating 31 is damaged, thereby effectively improving the overall wear resistance of the connecting rod body 1. A rust-proof layer 2 is provided, which includes an acrylic rust-proof coating 21 that provides a first layer of rust prevention for the connecting rod body 1 after the nano-chromium oxide coating 32 is damaged, and a red iron oxide alkyd rust-proof coating 22 that provides a second layer of rust prevention for the connecting rod body 1 after the acrylic rust-proof coating 21 is damaged, thereby effectively improving the overall rust resistance of the connecting rod body 1.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A connecting rod for an excavator bucket, comprising a connecting rod body (1), characterized in that: The surface of the connecting rod body (1) is provided with an anti-rust layer (2), and the anti-rust layer (2) includes an acrylic anti-rust coating (21) and an iron oxide alkyd anti-rust coating (22). The other side of the anti-rust layer (2) is provided with a wear-resistant layer (3), and the wear-resistant layer (3) includes a tungsten carbide coating (31) and a nano chromium oxide coating (32).

2. The connecting rod for an excavator bucket according to claim 1, characterized in that: The iron oxide alkyd anti-rust coating (22) is applied to the surface of the connecting rod body (1), and the acrylic anti-rust coating (21) is applied to the other side of the iron oxide alkyd anti-rust coating (22).

3. A connecting rod for an excavator bucket according to claim 1, characterized in that: The acrylic anti-rust coating (21) and the iron oxide alkyd anti-rust coating (22) have the same thickness, and the iron oxide alkyd anti-rust coating (22) has a thickness of 150 to 250 micrometers.

4. A connecting rod for an excavator bucket according to claim 1, characterized in that: The nano-chromium oxide coating (32) is applied to the other side of the acrylic anti-rust coating (21), and the tungsten carbide coating (31) is applied to the other side of the nano-chromium oxide coating (32).

5. A connecting rod for an excavator bucket according to claim 1, characterized in that: The tungsten carbide coating (31) and the nano-chromium oxide coating (32) have the same thickness, and the thickness of the tungsten carbide coating (31) is two hundred to four hundred micrometers.