Reinforced excavator boom

By installing side plates, main reinforcing ribs, vertical plates, and inclined plates at the bends of the excavator boom, a stable triangular structure is formed, and a honeycomb frame is used to solve the problem of boom stress concentration, thereby improving support strength and service life.

CN224227878UActive Publication Date: 2026-05-12SHANDONG HANDONG MASCH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG HANDONG MASCH CO LTD
Filing Date
2025-05-23
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

Existing excavator booms are prone to stress concentration at bends during high-intensity earthmoving operations, leading to cracks and shortened service life.

Method used

Side plates, main reinforcing ribs, vertical plates, inclined plates, and a frame are installed at the bending point of the boom to form a stable triangular structure, and a honeycomb frame design is adopted to improve the support strength.

Benefits of technology

It effectively addresses stress concentration, improves support at the boom's bending point, and extends the boom's service life.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224227878U_ABST
Patent Text Reader

Abstract

The utility model discloses a reinforced excavator movable arm which comprises a movable arm body, hinge holes are formed in the two ends of the movable arm body, a lug plate is fixedly installed at the top of the movable arm body, side plates are fixedly installed at the front end and the rear end of the bent position of the movable arm body, and a main reinforcing rib is fixedly installed at the bottom of the bent position of the movable arm body. According to one embodiment of the invention, the side plates, the main reinforcing ribs, the vertical plates, the inclined plates and the framework are arranged, the side plates are installed at the bent positions of the movable arm body, the structural strength of the movable arm body can be improved, the supporting effect on the bent positions of the movable arm body can be further improved through the design of the main reinforcing ribs, and meanwhile, the inclined plates and the vertical plates define a plurality of triangular areas, so that the supporting effect is improved. Due to the fact that the triangle has the characteristic of stability, the overall strength of the vertical plate can be improved, through the honeycomb-shaped design of the framework, the framework is matched with the vertical plate to support the movable arm body, the stress concentration phenomenon can be effectively dealt with, and the service life of the movable arm body is prolonged.
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Description

Technical Field

[0001] This utility model relates to the field of excavator technology, and more specifically, to a reinforced excavator boom. Background Technology

[0002] The boom of an excavator is a crucial component connecting the bucket and the machine body. It is typically composed of multiple steel sections and can flexibly extend, retract, and rotate. It undertakes important tasks such as digging, grabbing, and transporting materials. The angle and length can be adjusted according to work requirements. The boom is equipped with hydraulic cylinders and hydraulic lines, and is driven by a hydraulic system to provide powerful force and precise control. In fields such as engineering construction and mining, the boom of an excavator is widely used and is a core component of heavy machinery, bearing important operational functions and efficiency requirements.

[0003] However, existing technologies have some problems: the force conditions during boom operation are complex, requiring strong support strength and high requirements for mechanical structure. Under high-intensity loads such as earthmoving operations, existing excavator booms are prone to stress concentration at the bending point, which makes the boom prone to cracks and thus shortens the service life of the boom. Therefore, we propose a reinforced excavator boom. Utility Model Content

[0004] One objective of this invention is to provide a new technical solution for a reinforced excavator boom.

[0005] According to a first aspect of the present invention, a reinforced excavator boom is provided, comprising a boom body, with hinge holes at both ends of the boom body, a lug plate fixedly installed on the top of the boom body, side plates fixedly installed at both the front and rear ends of the bend of the boom body, a main reinforcing rib fixedly installed at the bottom of the bend of the boom body, a vertical plate fixedly installed at the bend of the inner wall of the boom body, an inclined plate fixedly connected to the vertical plate, and a frame filling the space between the inclined plate and the vertical plate.

[0006] Optionally, secondary reinforcing ribs are fixedly installed on both sides of the main reinforcing rib, and the top of the secondary reinforcing ribs is fixedly connected to the bottom of the boom body.

[0007] Optionally, a plate is fixedly installed on both sides of the boom body surface, and a reinforcing ring located at the hinge hole is fixedly installed on the plate.

[0008] Optionally, there are two ear plates, and an assembly plate is fixedly connected between the two sides of the two ear plates. The bottom of the assembly plate is fixedly connected to the boom body.

[0009] Optionally, the inclined plate is disposed between two vertical plates, and the inclined plate and the vertical plates form a triangle.

[0010] Optionally, the frame is fixedly installed between the inclined plate and the vertical plate, and the frame as a whole is honeycomb-shaped.

[0011] According to one embodiment of this disclosure, by setting side plates, main reinforcing ribs, vertical plates, inclined plates, and a frame, the structural strength of the boom body can be improved by installing side plates at the bending points. The design of the main reinforcing ribs can further improve the support effect at the bending points of the boom body. At the same time, the inclined plates and vertical plates form multiple triangular areas. Since triangles have the characteristic of stability, the overall strength of the vertical plates can be improved. The honeycomb design of the frame, in conjunction with the vertical plates, supports the boom body, effectively dealing with stress concentration and improving the service life of the boom body.

[0012] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0013] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0014] Figure 1 This is a schematic diagram of the overall structure of a reinforced excavating boom in one embodiment;

[0015] Figure 2 This is a schematic diagram of the bottom structure of a reinforced excavator boom in one embodiment;

[0016] Figure 3 This is a schematic diagram of the top structure of a reinforced excavator boom in one embodiment;

[0017] Figure 4 This is a cross-sectional view of the internal structure of a reinforced excavator boom in one embodiment;

[0018] Figure 5 This is a schematic diagram of the connection structure between the vertical plate and the inclined plate of a reinforced excavator boom in one embodiment.

[0019] The following are marked in the diagram: 1. Boom body; 2. Hinge hole; 3. Side plate; 4. Main reinforcing rib; 5. Vertical plate; 6. Inclined plate; 7. Frame; 8. Secondary reinforcing rib; 9. Panel; 10. Reinforcing ring; 11. Ear plate; 12. Assembly plate. Detailed Implementation

[0020] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0021] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0022] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0023] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0024] like Figures 1-5 As shown, a reinforced excavator boom includes a boom body 1, with hinge holes 2 at both ends of the boom body 1. A lug plate 11 is fixedly installed on the top of the boom body 1. Side plates 3 are fixedly installed at both the front and rear ends of the bend of the boom body 1. A main reinforcing rib 4 is fixedly installed at the bottom of the bend of the boom body 1. A vertical plate 5 is fixedly installed at the bend of the inner wall of the boom body 1. An inclined plate 6 is fixedly connected to the vertical plate 5. A frame 7 is filled between the inclined plate 6 and the vertical plate 5.

[0025] By installing side plates 3 at the bend of the boom body 1, its structural strength can be improved. The design of the main reinforcing ribs 4 can further improve the support effect at the bend of the boom body 1. At the same time, the design of the inclined plates 6, vertical plates 5 and frame 7, together with the support of the boom body 1, can effectively deal with stress concentration.

[0026] In the aforementioned reinforced excavator boom, secondary reinforcing ribs 8 are fixedly installed on both sides of the main reinforcing rib 4, and the top of the secondary reinforcing ribs 8 is fixedly connected to the bottom of the boom body 1.

[0027] The design of the secondary reinforcing rib 8 can further improve the support effect at the bending point of the boom body 1, thereby enhancing the overall bending strength of the boom body 1.

[0028] The aforementioned reinforced excavator boom has two fixedly mounted plates 9 on both sides of the boom body 1, and a reinforcing ring 10 located at the hinge hole 2 is fixedly mounted on the plate 9.

[0029] The design of the plate 9 and the reinforcing ring 10 can improve the strength of the hinge rod after it is connected at the hinge hole 2, thus making the boom body 1 more stable when rotating.

[0030] The aforementioned reinforced excavator boom has two ear plates 11, and an assembly plate 12 is fixedly connected between the two sides of the two ear plates 11. The bottom of the assembly plate 12 is fixedly connected to the boom body 1.

[0031] Ear plate 11 is used to install hydraulic cylinders connected to the boom, and mounting plate 12 can improve the connection strength between hydraulic cylinders and boom body 1.

[0032] In the aforementioned reinforced excavator boom, the inclined plate 6 is positioned between two vertical plates 5, and the inclined plate 6 and the vertical plates 5 form a triangular shape.

[0033] Since the inclined plate 6 and the vertical plate 5 form multiple triangular areas, the stability of the triangle can improve the overall strength of the vertical plate 5, thereby improving the support strength at the bending point of the boom body 1.

[0034] The aforementioned reinforced excavator boom has a frame 7 fixedly installed between the inclined plate 6 and the vertical plate 5, and the frame 7 is honeycomb in shape.

[0035] The frame 7 can be made of lightweight metal or composite materials, thereby improving the overall strength of the boom body 1 while controlling the weight.

[0036] Working principle and usage process of this utility model:

[0037] When the boom body 1 is under stress during operation, the side plate 3 installed at the bending point of the boom body 1 can improve its structural strength. The design of the main reinforcing rib 4 and the secondary reinforcing rib 8 can further improve the support effect at the bending point of the boom body 1. At the same time, the inclined plate 6 and the vertical plate 5 form multiple triangular areas. Due to the stability of triangles, the overall strength of the vertical plate 5 can be improved, thereby improving the support strength of the boom body 1. The honeycomb design of the frame 7, together with the vertical plate 5, supports the boom body 1 and can effectively deal with stress concentration, thereby improving the support strength at the bending point of the boom body 1 and extending the service life of the boom body 1.

[0038] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A reinforced excavator boom, comprising a boom body (1), wherein hinge holes (2) are provided at both ends of the boom body (1), and an ear plate (11) is fixedly installed on the top of the boom body (1), characterized in that: Side plates (3) are fixedly installed at both ends of the bending part of the boom body (1). A main reinforcing rib (4) is fixedly installed at the bottom of the bending part of the boom body (1). A vertical plate (5) is fixedly installed at the bending part of the inner wall of the boom body (1). An inclined plate (6) is fixedly connected to the vertical plate (5). A skeleton (7) is filled between the inclined plate (6) and the vertical plate (5).

2. The reinforced excavator boom according to claim 1, characterized in that: Both sides of the main reinforcing rib (4) are fixedly installed with secondary reinforcing ribs (8), and the top of the secondary reinforcing ribs (8) is fixedly connected to the bottom of the boom body (1).

3. The reinforced excavator boom according to claim 1, characterized in that: Both sides of the boom body (1) are fixedly installed with a plate (9), and a reinforcing ring (10) located at the hinge hole (2) is fixedly installed on the plate (9).

4. The reinforced excavator boom according to claim 1, characterized in that: There are two ear plates (11), and an assembly plate (12) is fixedly connected between the two sides of the two ear plates (11). The bottom of the assembly plate (12) is fixedly connected to the boom body (1).

5. A reinforced excavator boom according to claim 1, characterized in that: The inclined plate (6) is positioned between two vertical plates (5), and the inclined plate (6) and the vertical plates (5) form a triangle.

6. The reinforced excavator boom according to claim 1, characterized in that: The frame (7) is fixedly installed between the inclined plate (6) and the vertical plate (5), and the frame (7) is honeycomb in shape.