Internal rib plate structure of excavator bucket rod

Abstract

The utility model provides an internal rib plate structure of an excavator bucket rod, which belongs to the technical field of engineering mechanical structures and comprises a fixed shell, an inclined rib plate fixedly mounted on one side of the fixed shell, a front rib plate fixedly mounted on the other side of the fixed shell, a connecting component arranged on the surface of the fixed shell and a supporting component arranged in an inner cavity of the fixed shell. Through the collaborative design of the connecting assembly and the multi-layer composite supporting assembly, the overall performance of the bucket rod is improved, the service life of the bucket rod is prolonged, the connecting assembly adopts the welding plate tooth structure, the tooth plate splicing design and the inserting groove and splicing plate combined design, rapid installation and multiple fixing are achieved, and the service life of the bucket rod is prolonged. The assembling efficiency is improved, the reliability of the connecting part is ensured, and the problems that a traditional rib plate is not firm in welding and complex in installation are effectively solved; the supporting assembly forms an optimized stress transfer path and a three-dimensional supporting system through gradient material layout of the connecting layer, the supporting layer, the reinforcing layer, the fixing layer and the filling layer in cooperation with a longitudinal penetrating rib structure.

Description

Technical Field

[0001] This utility model belongs to the field of engineering machinery structure technology, specifically relating to an internal stiffening plate structure for an excavator boom. Background Technology

[0002] As a core component of construction machinery, the excavator stick's technology originated from the application of hydraulic transmission systems in the early 20th century. With the advancement of steel metallurgy and machining technology, the stick structure has evolved from early riveted types to high-strength steel plate welding or one-piece molding, and lightweight design has been introduced to improve durability and efficiency. In terms of development history, after the 1950s, as hydraulic excavators replaced mechanical ones, stick design tended to be modular and intelligent. Modern sticks also integrate sensors to achieve precise control. Application scenarios cover earthwork excavation, mining, construction, and disaster relief, adapting to the needs of different working conditions, and are an indispensable key component in modern construction.

[0003] In existing technologies, the internal stiffening plate structure of excavator booms often faces problems such as insufficient welding strength, uneven stress distribution leading to local cracking, and short fatigue life. Especially under high load or impact conditions, traditional single-layer stiffening plate structures are prone to deformation or even breakage. At the same time, existing stiffening plates mostly use a single material or simple welding method, which makes it difficult to meet the requirements of lightweight and high strength. Moreover, the assembly process is cumbersome and affects production efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide an internal stiffening plate structure for an excavator boom, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An internal stiffening plate structure for an excavator boom, comprising,

[0007] A fixed shell, a slanted rib plate fixedly installed on one side of the fixed shell, a positive rib plate fixedly installed on the other side of the fixed shell, a connecting assembly disposed on the surface of the fixed shell, and a support assembly disposed in the inner cavity of the fixed shell.

[0008] In a preferred embodiment of the present invention, the connecting assembly includes a welding plate fixedly connected to one end of the fixed shell, and a toothed plate fixedly connected to the other end of the fixed shell.

[0009] As a preferred embodiment of the present invention, the connecting assembly further includes a slot disposed on one side of the fixed shell and a splicing plate fixedly connected to the other side of the fixed shell.

[0010] As a preferred embodiment of the present invention, the support assembly includes a connecting layer welded to the inner wall of the fixed shell, and a support layer welded to the surface of the connecting layer.

[0011] As a preferred embodiment of the present invention, the support assembly further includes a reinforcing layer welded to the surface of the support layer, and a fixing layer fixedly connected to the surface of the reinforcing layer.

[0012] As a preferred embodiment of the present invention, the support assembly further includes a filling layer fixedly connected to the surface of the fixing layer, and ribs inserted into the cavity of the connecting layer.

[0013] As a preferred embodiment of this utility model, the connecting layer is made of high-strength low-alloy steel, the supporting layer is made of wear-resistant steel, the reinforcing layer is made of high-strength structural steel, the fixing layer is made of chromium alloy steel, the filler is made of chromium-molybdenum alloy steel, and the ribs are made of wear-resistant alloy steel.

[0014] Compared with existing technologies, the beneficial effects of this utility model are as follows: Through the coordinated design of the connecting components and the multi-layer composite support components, the overall performance and service life of the boom are improved. The connecting components adopt a welded plate tooth structure, tooth plate splicing, and slot and splicing plate combination design, which realizes rapid installation and multiple fixation, improving assembly efficiency and ensuring the reliability of the connection parts, effectively solving the problems of weak welding and complex installation of traditional stiffeners. The support components form an optimized stress transmission path and three-dimensional support system through the gradient material layout of the connecting layer, support layer, reinforcing layer, fixing layer and filling layer, combined with the longitudinally penetrating rib structure, so that the boom has better bending and torsional resistance and fatigue resistance when subjected to complex loads. Each functional layer adopts targeted special steels, such as high-strength low alloy steel, wear-resistant steel, chromium-molybdenum alloy steel, etc., forming the best material performance combination in key parts, which ensures structural strength and improves wear resistance. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram showing the connection between the fixed shell and the positive rib plate of this utility model;

[0018] Figure 3 This is a schematic diagram showing the connection between the bottom shell and the inclined rib plate of this utility model;

[0019] Figure 4 This is a schematic cross-sectional view of the fixed shell of this utility model.

[0020] In the diagram: 101, fixed shell; 102, inclined rib; 103, positive rib; 104, connecting assembly; 104a, welding plate; 104b, toothed plate; 104c, slot; 104d, splicing plate; 105, support assembly; 105a, connecting layer; 105b, support layer; 105c, reinforcing layer; 105d, fixing layer; 105e, filling layer; 105f, rib. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0024] Example

[0025] Reference Figures 1-4 This embodiment of the present invention provides an internal stiffening plate structure for an excavator boom, comprising:

[0026] The fixed housing 101, the inclined rib plate 102 fixedly installed on one side of the fixed housing 101, the positive rib plate 103 fixedly installed on the other side of the fixed housing 101, the connecting assembly 104 provided on the surface of the fixed housing 101, and the support assembly 105 provided in the inner cavity of the fixed housing 101.

[0027] Specifically, the connecting assembly 104 includes a welding plate 104a fixedly connected to one end of the fixed housing 101, and a toothed plate 104b fixedly connected to the other end of the fixed housing 101. The connecting assembly 104 also includes a slot 104c disposed on one side of the fixed housing 101, and a splicing plate 104d fixedly connected to the other side of the fixed housing 101.

[0028] Furthermore, the surface of the welding plate 104a is provided with teeth to ensure stability when welding with the boom. The toothed plate 104b is provided to facilitate splicing with other stiffening plates and to facilitate welding during splicing.

[0029] Preferably, the support assembly 105 includes a connecting layer 105a welded to the inner wall of the fixed shell 101, and a support layer 105b welded to the surface of the connecting layer 105a. The support assembly 105 also includes a reinforcing layer 105c welded to the surface of the support layer 105b, and a fixing layer 105d fixedly connected to the surface of the reinforcing layer 105c. The support assembly 105 also includes a filling layer 105e fixedly connected to the surface of the fixing layer 105d, and a rib 105f inserted into the inner cavity of the connecting layer 105a.

[0030] It should be noted that the connecting layer 105a is made of high-strength low-alloy steel, the supporting layer 105b is made of wear-resistant steel, the reinforcing layer 105c is made of high-strength structural steel, the fixing layer 105d is made of chromium alloy steel, the filler is made of chromium-molybdenum alloy steel, and the rib 105f is made of wear-resistant alloy steel.

[0031] In use, quick installation and stable fixation are achieved through the connecting component 104. The toothed side of the welding plate 104a is attached to the welding surface of the boom. The toothed structure enhances the welding contact area, ensuring the structural stability after welding. The design of the toothed plate 104b facilitates interlocking with other stiffening plates. During the interlocking process, welding can further reinforce the connection. The slots 104c on both sides of the fixing shell 101 and the splicing plate 104d form a complementary structure. When multiple stiffening plates need to be assembled, simply inserting the splicing plate 104d into the slot 104c of the adjacent stiffening plate completes the initial positioning, greatly improving assembly efficiency. The support component 105 is used in conjunction with a multi-layer composite structure. To enhance the overall mechanical properties of the boom, when the boom is subjected to digging load, the external force is first transmitted to the connecting layer 105a through the fixed shell 101. The connecting layer 105a, made of high-strength low-alloy steel, effectively disperses the stress. Subsequently, the stress is transferred through the wear-resistant steel support layer 105b to the high-strength structural steel reinforcing layer 105c, forming a gradient strength support system. The chromium alloy steel of the fixed layer 105d and the chromium-molybdenum alloy steel of the filling layer 105e together constitute the core pressure-bearing area. Combined with the wear-resistant alloy steel material of the ribs 105f, the structural integrity is maintained under repeated friction conditions. The ribs 105f penetrate the connecting layer 105a longitudinally to form a three-dimensional skeleton, preventing interlayer delamination of the multi-layer structure under alternating loads.

[0032] In summary, the combined use of connecting component 104 and support component 105 achieves a comprehensive improvement in installation convenience, structural stability, and load-bearing capacity. The toothed structure of welding plate 104a enhances the shear resistance of the welding interface, effectively preventing weld cracking caused by long-term vibration. The cooperation between toothed plate 104b, slot 104c, and splicing plate 104d not only simplifies the multi-rib plate assembly process but also ensures the reliability of the connection nodes through a dual fixing mechanism of mechanical interlocking and welding. The multi-layer composite design of support component 105 enables the boom to achieve reasonable stress transmission when subjected to complex excavation loads. The high-strength low-alloy steel connecting layer 105a acts as a buffer transition zone to absorb impact energy. The wear-resistant steel support layer 105b and the high-strength structural steel reinforcing layer 105c together form the main load-bearing frame. The high-hardness core area formed by the chromium alloy steel fixing layer 105d and the chromium-molybdenum alloy steel filling layer 105e significantly improves the compressive strength. Meanwhile, the longitudinally distributed wear-resistant alloy steel ribs 105f effectively suppress structural deformation and interlayer displacement. While ensuring lightweight design, the boom has excellent bending and torsional stiffness, fatigue resistance and wear resistance, extending the service life of key components and reducing equipment maintenance costs.

[0033] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0034] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0035] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An internal stiffening plate structure for an excavator boom, characterized in that: include, The fixed shell (101), the inclined rib plate (102) fixedly installed on one side of the fixed shell (101), the positive rib plate (103) fixedly installed on the other side of the fixed shell (101), the connecting assembly (104) disposed on the surface of the fixed shell (101), and the support assembly (105) disposed in the inner cavity of the fixed shell (101).

2. The internal stiffening plate structure of an excavator boom according to claim 1, characterized in that: The connecting assembly (104) includes a welding plate (104a) fixedly connected to one end of the fixed housing (101) and a toothed plate (104b) fixedly connected to the other end of the fixed housing (101).

3. The internal stiffening plate structure of an excavator boom according to claim 2, characterized in that: The connecting assembly (104) also includes a slot (104c) disposed on one side of the fixed housing (101) and a splicing plate (104d) fixedly connected to the other side of the fixed housing (101).

4. The internal stiffening plate structure of an excavator boom according to claim 3, characterized in that: The support assembly (105) includes a connecting layer (105a) welded to the inner wall of the fixed shell (101), and a support layer (105b) welded to the surface of the connecting layer (105a).

5. The internal stiffening plate structure of an excavator boom according to claim 4, characterized in that: The support assembly (105) further includes a reinforcing layer (105c) welded to the surface of the support layer (105b) and a fixing layer (105d) fixedly connected to the surface of the reinforcing layer (105c).

6. The internal stiffening plate structure of an excavator boom according to claim 5, characterized in that: The support assembly (105) further includes a filling layer (105e) fixedly connected to the surface of the fixing layer (105d) and a rib (105f) inserted into the cavity of the connecting layer (105a).

7. The internal stiffening plate structure of an excavator boom according to claim 6, characterized in that: The connecting layer (105a) is made of high-strength low-alloy steel, the supporting layer (105b) is made of wear-resistant steel, the reinforcing layer (105c) is made of high-strength structural steel, the fixing layer (105d) is made of chromium alloy steel, the filler is made of chromium-molybdenum alloy steel, and the rib (105f) is made of wear-resistant alloy steel.

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