Angle-adjustable excavator boom structure
By incorporating lubrication channels and adjustment components into the excavator boom structure, the problem of insufficient lubrication was solved, resulting in improved lubrication performance and enhanced structural strength, thus ensuring stable equipment operation and construction progress.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHENGZHOU UNIV
- Filing Date
- 2025-05-18
- Publication Date
- 2026-04-21
AI Technical Summary
The existing adjustable-angle excavator boom structure has defects in lubrication maintenance. It is difficult to accurately judge the remaining amount and distribution of lubricating grease, resulting in insufficient lubrication. Long-term lack of lubrication will aggravate wear and equipment failure, affecting service life and construction progress.
An excavator boom structure was designed, comprising a mounting base, a boom, a lubrication mechanism, and a reinforcing mechanism. By setting a lubrication channel and adjustment components inside the boom, lubricating oil is flowed by steel balls rolling in the arc groove. Combined with a telescopic cylinder to adjust the position and angle of the reinforcing mechanism, the structural strength is enhanced. A sealing device is provided to prevent impurities from entering.
It improves lubrication, reduces friction and wear, extends bearing life, enhances structural strength, ensures stable equipment operation, reduces equipment energy consumption and failure rate, and improves construction efficiency.
Smart Images
Figure CN224148796U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of excavator boom technology, and in particular to an adjustable-angle excavator boom structure. Background Technology
[0002] When lubricating the excavator boom, an adjustable-angle boom structure is often used, which offers numerous benefits. This refers to the excavator boom's ability to adjust its angle according to actual working conditions. Reasons for using this structure include: adapting to diverse operational needs, such as digging and loading at different angles; improving operational flexibility and accuracy while reducing impact on the surrounding environment; enhancing the excavator's ability to work in complex terrain and special scenarios; and also improving operational efficiency and reducing labor intensity to some extent.
[0003] The excavator boom lubrication structure incorporates lubrication channels and grease injectors inside the boom. A grease pump injects grease into various joints of the boom, and the grease is then transported through pipelines to the locations requiring lubrication. This reduces friction and wear during boom movement, improving mechanical efficiency and service life. Furthermore, the lubrication structure is equipped with filters and safety valves to ensure stable and safe lubrication operation.
[0004] Existing adjustable-angle excavator boom structures have significant deficiencies in lubrication and maintenance. Because the boom joints are under constant high-load relative motion, regular replenishment of lubricating grease is necessary to reduce frictional losses. However, traditional enclosed or semi-enclosed articulated structures lack convenient lubrication channels and visual maintenance windows, making it difficult for operators to accurately judge the remaining amount and distribution of lubricating grease, easily leading to insufficient lubrication. Long-term lack of lubrication exacerbates wear on the articulated shaft and bushings, causing problems such as boom swaying and hydraulic pressure fluctuations. This not only shortens component lifespan but also increases equipment energy consumption and failure rate. Frequent downtime for maintenance also severely impacts construction progress. Therefore, an adjustable-angle excavator boom structure is proposed to solve these problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides an adjustable-angle excavator boom structure, which aims to improve the problem that some existing devices cannot lubricate the excavator boom.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] An adjustable-angle excavator boom structure includes a mounting base, a boom fixedly connected to the top central space area of the mounting base, lubrication mechanisms on the left and right outer sides of the boom, and a reinforcing mechanism on one outer side of the boom.
[0008] The lubrication mechanism includes an outer fixed ring, an oil inlet hole with a rubber plug fixedly connected inside the outer fixed ring, an oil reservoir fixedly connected inside the outer fixed ring, an oil outlet hole fixedly connected to the bottom of the oil reservoir, an arc groove fixedly connected to the outside of the oil outlet hole, an adjusting component rotatably connected inside the outer fixed ring, a retainer fixedly connected to the outside of the adjusting component, a fixing post fixedly connected to the outside of the retainer, and an inner fixed ring rotatably connected inside the outer fixed ring.
[0009] As a further description of the above technical solution:
[0010] The reinforcing mechanism includes a telescopic cylinder, a reinforcing shaft is fixedly connected to the outer side of the telescopic cylinder, a base is fixedly connected to the inner space area of the reinforcing shaft, the outer side of the telescopic cylinder is fixedly connected to the outer side of the upper arm, and the outer side of the reinforcing shaft is fixedly connected to the outer side of the upper arm.
[0011] As a further description of the above technical solution:
[0012] The adjustment assembly includes steel balls, which are externally fixedly connected to the inside of the retainer and externally fixedly connected to the inside of the arc groove.
[0013] As a further description of the above technical solution:
[0014] A vertical plate is fixedly connected to the outer side of the reinforcing shaft, and a reinforcing block is fixedly connected to the outer side of the vertical plate.
[0015] As a further description of the above technical solution:
[0016] A reinforcing block 2 is fixedly connected to the outer side of the vertical plate, a lubrication groove is fixedly connected to the inner side of the vertical plate, and the outer side of the lubrication groove is fixedly connected to the outer side of the telescopic cylinder.
[0017] As a further description of the above technical solution:
[0018] The outer side of the boom is rotatably connected to the forearm, and the outer side of the forearm is rotatably connected to the bucket.
[0019] As a further description of the above technical solution:
[0020] The inner fixing ring is fixedly connected to the outside of a sealing ring, and the outer fixing ring has an annular groove inside.
[0021] As a further description of the above technical solution:
[0022] The annular slot is fixedly connected to a buckle, and the buckle is fixedly connected to a dust cover.
[0023] This utility model has the following beneficial effects:
[0024] 1. In this utility model, by rotating the inner fixed ring, the inner fixed ring drives the steel ball to rotate. Under the movement of the steel ball, it rotates inside the outer fixed ring. Under the movement of the inner fixed ring, the steel ball rotates inside the outer fixed ring. Under the movement of the steel ball, the oil storage cavity drives the oil outlet hole to promote the flow of oil, reduce the flow resistance, thereby significantly improving the lubrication effect, reducing the friction coefficient between the rolling element and the raceway, thereby reducing wear and extending the service life of the bearing.
[0025] 2. In this utility model, the first reinforcing block and the second reinforcing block can increase the connection between the vertical plate and the base, thereby increasing the structural strength. The outer walls of the first reinforcing block and the second reinforcing block are welded to the top of the base, which can increase the connection strength between the vertical plate and the base, thereby increasing the connection strength between the vertical plate and the base, and avoiding problems such as excessive stress, damage to the weld, and structural damage. Attached Figure Description
[0026] Figure 1 This is a three-dimensional schematic diagram of the adjustable-angle excavator boom structure proposed in this utility model;
[0027] Figure 2 This is a schematic diagram of the boom of the adjustable-angle excavator boom structure proposed in this utility model.
[0028] Figure 3 This is a schematic diagram of the dust cover for the adjustable-angle excavator boom structure proposed in this utility model;
[0029] Figure 4 This is a schematic diagram of the fixing column of the adjustable-angle excavator boom structure proposed in this utility model;
[0030] Figure 5 This is a schematic diagram of the base of the adjustable-angle excavator boom structure proposed in this utility model;
[0031] Figure 6 for Figure 1 Enlarged view of point A in the middle.
[0032] Legend:
[0033] 1. Mounting base; 2. Boom; 3. Outer fixing ring; 4. Rubber plug oil inlet; 5. Oil reservoir; 6. Oil outlet; 7. Arc groove; 8. Steel ball; 9. Cage; 10. Fixing column; 11. Inner fixing ring; 12. Sealing ring; 13. Annular groove; 14. Buckle; 15. Dust cover; 16. Telescopic cylinder; 17. Reinforcing shaft; 18. Base one; 19. Vertical plate; 20. Reinforcing block one; 21. Reinforcing block two; 22. Lubrication groove; 23. Forearm; 24. Bucket. Detailed Implementation
[0034] 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.
[0035] Reference Figures 1 to 2 The present invention provides an embodiment of an adjustable-angle excavator boom structure, including a mounting base 1, which provides stable support for the boom 2, ensuring that the boom will not sway or shift during operation, thereby improving the accuracy and safety of excavation operations. The boom 2 is fixedly connected to the top space area of the mounting base 1. During excavation operations, the boom 2 is responsible for transmitting power and bearing the excavation force, realizing the lifting and movement of excavated materials. Lubrication mechanisms are provided on the left and right sides of the outer side of the boom 2, and a reinforcing mechanism is provided on one side of the outer side of the boom 2.
[0036] The lubrication mechanism includes an outer fixing ring 3, which serves as the outer shell of the lubrication mechanism, protecting the internal components and providing a position for installation and support. The outer fixing ring 3 has a rubber plug oil inlet hole 4 fixedly connected inside, which facilitates the addition of lubricating oil to the lubrication mechanism by the operator, while preventing dust and impurities from entering the oil storage chamber 5, ensuring the cleanliness of the lubricating oil. The outer fixing ring 3 also has an oil storage chamber 5 fixedly connected inside, which stores a certain amount of lubricating oil to provide a continuous lubricating medium for the lubrication mechanism and ensure the stability of the lubrication effect.
[0037] An oil outlet 6 is fixedly connected to the bottom of the oil storage chamber 5, which guides the lubricating oil in the oil storage chamber 5 into the arc groove 7 to provide lubrication for the steel ball 8. The arc groove 7 is fixedly connected to the outside of the oil outlet 6 to provide a rolling track for the steel ball 8, and at the same time stores a certain amount of lubricating oil so that the steel ball 8 can fully contact the lubricating oil during the rolling process, reducing friction and wear. An adjustment component is rotatably connected inside the outer fixed ring 3. When the boom 2 moves, the steel ball 8 rolls in the arc groove 7, which reduces friction and transmits force, and can also adjust the angle of the boom 2.
[0038] The external fixed connection of the adjusting component is a retainer 9, which maintains the relative position of the steel balls 8, prevents the steel balls 8 from colliding and wearing each other, and guides the steel balls 8 to roll in the arc groove 7 to ensure the normal operation of the adjusting component. The external fixed connection of the retainer 9 is a fixing post 10, which improves the overall performance of the retainer 9 and ensures that it will not be deformed or damaged during operation, thereby ensuring the reliability of the adjusting component. The inner fixed ring 11 is rotatably connected to the outer fixed ring 3, which cooperates with the outer fixed ring 3 to form a relatively moving component, and at the same time provides support and positioning for the adjusting component.
[0039] The reinforcing mechanism includes a telescopic cylinder 16, which serves as the power source for the reinforcing mechanism. By telescopic movement, the position and angle of the reinforcing shaft 17 are changed, thereby enhancing the support force and stability of the boom 2. During the excavation process, the telescopic cylinder 16 can adjust the effect of the reinforcing mechanism according to different working loads and excavation postures, thereby improving the load-bearing capacity of the boom 2. The reinforcing shaft 17 is fixedly connected to the outer side of the telescopic cylinder 16. It is a key component connecting the telescopic cylinder 16 and the boom 2, transmitting the force of the telescopic cylinder 16 to the boom 2, enhancing the structural strength of the boom 2, and also serving to support and position the vertical plate 19, ensuring the overall stability of the reinforcing mechanism.
[0040] A base 18 is fixedly connected to the internal space of the reinforcing shaft 17, providing stable support and fixing points for the reinforcing shaft 17, dispersing the stress borne by the reinforcing shaft 17, and preventing the reinforcing shaft 17 from deforming or loosening during operation. The outer side of the telescopic cylinder 16 is fixedly connected to the outer side of the boom 2, and the outer side of the reinforcing shaft 17 is fixedly connected to the outer side of the boom 2.
[0041] Reference Figures 3 to 4 The adjustment assembly includes steel balls 8, which are externally fixedly connected to the inside of the retainer 9 and the outside of the arc groove 7. A vertical plate 19 is fixedly connected to the outside of the reinforcing shaft 17. As an important part of the reinforcing mechanism, the vertical plate 19 connects and supports the first reinforcing block 20, the second reinforcing block 21 and the lubrication groove 22, and transmits the force of the reinforcing blocks to the reinforcing shaft 17 and the boom 2, further enhancing the structural strength of the boom 2.
[0042] A reinforcing block 20 is fixedly connected to one side of the vertical plate 19 to enhance the structural strength and rigidity of the vertical plate 19, disperse the stress borne by the vertical plate 19, and prevent the vertical plate 19 from deforming or being damaged during operation. The reinforcing block 20 and the reinforcing block 21 work together with the vertical plate 19 and the reinforcing shaft 17 to improve the performance of the entire reinforcing mechanism.
[0043] A lubrication groove 22 is fixedly connected to the inner side of the vertical plate 19 to reduce friction and wear between the telescopic cylinder 16 and the vertical plate 19, improve the movement flexibility and service life of the telescopic cylinder 16. At the same time, the lubrication groove 22 can also play a role in sealing and dust prevention, protecting the telescopic cylinder 16 from the influence of external dust and impurities. The outer side of the lubrication groove 22 is fixedly connected to the outer side of the telescopic cylinder 16.
[0044] Reference Figures 5 to 6 The outer side of the boom 2 is rotatably connected to the forearm 23. During excavation, the forearm 23 serves as a connecting component between the boom 2 and the bucket 24, transmitting power and changing the digging angle. Through cooperation with the boom 2 and the bucket 24, the forearm 23 can achieve different digging postures and working ranges. The outer side of the forearm 23 is rotatably connected to the bucket 24, which is the working component of the excavator. The bucket 24 is in direct contact with the material and is responsible for digging, loading, and transporting the material.
[0045] The inner fixed ring 11 is externally fixedly connected with a sealing ring 12 to prevent lubricating oil from leaking from the gap between the inner fixed ring 11 and the outer fixed ring 3, thus ensuring the sealing performance of the lubrication mechanism. The outer fixed ring 3 has an annular groove 13 inside to provide an installation position for the buckle 14. The buckle 14 cooperates with the dust cover 15 to prevent dust and impurities from entering the lubrication mechanism.
[0046] The annular groove 13 is internally fixedly connected to a buckle 14, which fixes the dust cover 15 to the outer fixing ring 3 to prevent the dust cover 15 from loosening or falling off, thus ensuring the dustproof effect. The buckle 14 is externally fixedly connected to the dust cover 15 to prevent dust, dirt and moisture and other impurities from entering the lubrication mechanism, protect the internal components from damage, and extend the service life of the lubrication mechanism.
[0047] Working principle: When the adjustable-angle excavator boom structure is in operation, the mounting base 1 supports the boom 2. The operator adds lubricating oil to the oil storage chamber 5 through the rubber plug oil inlet 4. The lubricating oil in the oil storage chamber 5 flows into the arc groove 7 through the oil outlet 6. When the boom 2 moves, the steel ball 8 of the adjustment component rolls in the arc groove 7, driving the cage 9, the fixed column 10, and the inner fixed ring 11 to move. The inner fixed ring 11 rotates relative to the outer fixed ring 3 to achieve the angle adjustment of the boom 2. The cage 9 holds the position of the steel ball 8. The sealing ring 12 prevents lubricating oil leakage. The buckle 14 cooperates with the annular groove 13 to fix the dust cover 15 to prevent impurities from entering the lubrication mechanism.
[0048] The telescopic cylinder 16, acting as the power source for the reinforcing mechanism, performs telescopic movements, driving the reinforcing shaft 17 to change its position and angle. The base 18 inside the reinforcing shaft 17 provides support and fixation. The vertical plate 19 is connected to the outside of the reinforcing shaft 17, and the reinforcing blocks 20 and 21 fixed on it enhance the strength of the vertical plate 19. The lubrication groove 22 inside the vertical plate 19 is fitted onto the outside of the telescopic cylinder 16. The outer side of the boom 2 is rotatably connected to the forearm 23, and the outer side of the forearm 23 is rotatably connected to the bucket 24. During operation, the telescopic cylinder 16 adjusts the reinforcing mechanism as needed, the forearm 23 transmits power to change the digging angle, and the bucket 24 cooperates with the boom 2 and forearm 23 to achieve different digging postures, completing material digging, loading, and transportation.
[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An angle-adjustable excavator boom structure comprising a mounting base (1), characterized in that: The top space of the mounting base (1) is fixedly connected to the large arm (2), and the large arm (2) is provided with lubrication mechanisms on the left and right sides of the outside, and a reinforcing mechanism is provided on one side of the outside of the large arm (2). The lubrication mechanism includes an outer fixed ring (3), an oil inlet hole (4) with a rubber plug is fixedly connected inside the outer fixed ring (3), an oil storage cavity (5) is fixedly connected inside the outer fixed ring (3), an oil outlet hole (6) is fixedly connected to the bottom of the oil storage cavity (5), an arc groove (7) is fixedly connected to the outside of the oil outlet hole (6), an adjustment component is rotatably connected inside the outer fixed ring (3), a retainer (9) is fixedly connected to the outside of the adjustment component, a fixing column (10) is fixedly connected to the outside of the retainer (9), and an inner fixed ring (11) is rotatably connected inside the outer fixed ring (3).
2. The adjustable angle excavator arm structure of claim 1, wherein: The reinforcing mechanism includes a telescopic cylinder (16), a reinforcing shaft (17) is fixedly connected to the outer side of the telescopic cylinder (16), a base (18) is fixedly connected to the inner space area of the reinforcing shaft (17), the outer side of the telescopic cylinder (16) is fixedly connected to the outer side of the upper arm (2), and the outer side of the reinforcing shaft (17) is fixedly connected to the outer side of the upper arm (2).
3. The adjustable angle excavator arm structure of claim 1, wherein: The adjustment assembly includes a steel ball (8), the outside of which is fixedly connected to the inside of the retainer (9), and the outside of which is fixedly connected to the inside of the arc groove (7).
4. The adjustable angle excavator arm structure of claim 2, wherein: A vertical plate (19) is fixedly connected to the outer side of the reinforcing shaft (17), and a reinforcing block (20) is fixedly connected to the outer side of the vertical plate (19).
5. An angle adjustable excavator arm structure according to claim 4, characterized in that: A reinforcing block 2 (21) is fixedly connected to the outer side of the vertical plate (19), a lubrication groove (22) is fixedly connected to the inner side of the vertical plate (19), and the outer side of the lubrication groove (22) is fixedly connected to the outer side of the telescopic cylinder (16).
6. The adjustable angle excavator arm structure of claim 1, wherein: The outer side of the boom (2) is rotatably connected to the forearm (23), and the outer side of the forearm (23) is rotatably connected to the bucket (24).
7. The adjustable angle excavator arm structure of claim 1, wherein: The inner fixing ring (11) is fixedly connected to the outside of a sealing ring (12), and the outer fixing ring (3) has an annular groove (13) inside.
8. The adjustable angle excavator arm structure of claim 7, wherein: The annular slot (13) is fixedly connected to a buckle (14), and the buckle (14) is fixedly connected to a dust cover (15).