Loader movable arm structure

Abstract

The utility model discloses a movable arm structure of a loading machine, and aims to optimize stress distribution and enhance connection strength and overall stability. The protruding part on the movable arm plate and the cross beam are accurately matched and integrally formed, so that the assembly precision and the connection stability are improved. The reinforcing protrusions and the movable arm plate are integrally formed, stress distribution is optimized, and bending resistance and torsion resistance are enhanced. The first reinforcing rod, the second reinforcing rod and the X-shaped reinforcing plate are additionally arranged to form a stable triangular supporting structure, and the overall strength and the bearing capacity are remarkably improved. Meanwhile, the cross beam adopts a hollow design, the weight is reduced, and the operation efficiency is improved. According to the structure, the manufacturing process is simplified, the production efficiency is improved, the overall quality and performance of the movable arm structure are ensured, and the movable arm structure is suitable for operation requirements of various loaders.

Description

Technical Field

[0001] The utility model relates to the technical field of loader equipment, in particular to a loader boom structure. Background Art

[0002] The loader boom is an important part of the loader. It is formed by hydraulic cylinders, pistons and other components installed at the front of the loader. It is a rotatable and retractable arm. This boom plays a vital role in the operation of the loader and is used to perform various tasks such as digging, shoveling, and leveling.

[0003] In the prior art, a loader boom structure with a publication number of "CN216948479U" includes: a pair of boom plates, a crossbeam is provided between the boom plates, and connecting plates are provided at both ends of the crossbeam. The crossbeam is a tubular structure, and a support plate is provided inside the crossbeam corresponding to the position where the rocker arm hinge seat is installed, and the peripheral side of the support plate is in contact with the inner wall of the crossbeam. The crossbeam passes through the middle of the connecting plate, and both sides of the connecting plate are welded to the crossbeam. The connecting plate is welded to the side wall of the boom plate, and the connecting plate is provided with at least one through hole. The joint between the inner wall of the through hole and the boom plate is welded. The structural strength of the connection between the crossbeam and the boom plate is greatly increased, and the strength of the boom plate itself is also increased.

[0004] However, the existing technology still has major deficiencies, such as:

[0005] The existing technology does not fully consider the stress distribution problem of the boom plate during the force-bearing process, which leads to local stress concentration of the boom plate and affects the service life. Utility Model Content

[0006] The utility model aims to provide a loader boom structure to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A loader boom structure includes a pair of boom plates, a cross beam is fixedly arranged between the boom plates, a protrusion is fixedly arranged on the boom plates, the shape of the protrusion matches the shape of the cross beam, both ends of the cross beam are fixedly connected to the boom plates through the protrusions, a reinforcing protrusion matching the curve of the boom plates is provided on the boom plates, a reinforcing curling portion is provided on the edge of the boom plates, and three through holes are provided on the boom plates.

[0009] Preferably, a plurality of first reinforcing ribs are fixedly provided between the reinforcing curling portion and the reinforcing protrusion, and the first reinforcing ribs are used to increase the strength of the boom plate.

[0010] Preferably, the first bosses at both ends of the crossbeam are provided with a second boss fixedly disposed on the reinforcing protrusion, a first reinforcing rod is fixedly disposed between the first boss and the second boss, and the first reinforcing rod, the crossbeam and the reinforcing protrusion form a triangular structure.

[0011] Preferably, a second reinforcing rod is fixedly arranged between the first reinforcing rod and the reinforcing protrusion, fixing plates are fixedly arranged at both ends of the connection between the first reinforcing rod and the second reinforcing rod, and the first reinforcing rod, the second reinforcing rod and the reinforcing protrusion also form a triangular structure.

[0012] Preferably, the cross beam is hollow, and an X-shaped reinforcement plate is fixedly arranged in the cross beam.

[0013] Preferably, shaft sleeves are fixedly arranged at the positions of the three through holes.

[0014] Preferably, a plurality of second reinforcing ribs are fixedly arranged between the shaft sleeve and the boom plate, and the second reinforcing ribs are arranged in an annular array on the outside of the shaft sleeve.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The raised portion matches the shape of the crossbeam and is formed integrally with the boom plate through a stamping process, which provides precise positioning for the installation of the crossbeam and ensures the smooth progress of the assembly process. The raised portion not only improves the strength and rigidity of the connection part, but also enhances the connection stability between the boom plate and the crossbeam through its close combination with the crossbeam. The existence of the raised portion makes the assembly and manufacturing process of the boom plate and the crossbeam more precise, simplifies the manufacturing process, improves production efficiency, and ensures the overall quality and performance of the boom structure.

[0017] 2. The reinforcing protrusion and the boom plate are tightly combined through an integrated stamping manufacturing process to form a solid whole, which effectively optimizes the stress distribution and significantly improves the bending and torsion resistance of the boom plate. The reinforced curling portion provides additional protection for the boom plate by increasing the thickness and strength of the edge to prevent deformation or cracking under extreme working conditions. The first reinforcing rib is welded between the reinforced curling portion and the reinforcing protrusion in a triangular arrangement. This design not only improves the strength of the edge, but also enhances the overall strength of the boom plate through the stability principle of the triangle.

[0018] 3. By designing the first boss at both ends of the beam, setting the second boss on the reinforcement protrusion, and introducing the first reinforcement rod and the second reinforcement rod, a stable triangular support structure is formed, which greatly enhances the overall stability and load-bearing capacity of the boom structure. The addition of the second reinforcement rod further improves the strength and redundancy of the structure, providing additional strength and stability for the boom structure.

[0019] 4. The beam is designed as a hollow structure, which effectively reduces the overall weight and improves the operating efficiency of the loader. An X-shaped reinforcement plate is fixed inside the hollow beam, which not only ensures the rigidity and strength requirements of the beam, but also further improves the overall strength by optimizing the internal structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the overall device of the utility model;

[0021] Figure 2 It is a top view of the utility model;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the first reinforcing rib of the utility model;

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the reinforced protrusion of the utility model;

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the raised part of the utility model;

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the second reinforcing rib of the utility model.

[0026] In the figure: 1, boom plate; 2, cross beam; 3, raised portion; 4, reinforced raised portion; 5, reinforced curled portion; 6, through hole; 7, first reinforcing rib; 8, first boss; 9, second boss; 10, first reinforcing rod; 11, second reinforcing rod; 12, fixing plate; 13, X-shaped reinforcing plate; 14, bushing; 15, second reinforcing rib. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-6 , the utility model provides a technical solution:

[0029] A loader boom structure mainly consists of a pair of boom plates 1, which are made of high-strength alloy materials to ensure stability and durability under harsh working conditions. A crossbeam 2 is fixedly installed between the boom plates 1 by welding, and the crossbeam 2 is also made of high-strength materials, and its cross-sectional shape is optimized to provide sufficient rigidity and load-bearing capacity.

[0030] On the inner side of the boom plate 1, a protrusion 3 matching the shape of the cross beam 2 is fixedly provided. These protrusions 3 are integrally formed with the boom plate 1 through a stamping process, which not only ensures the matching with the cross beam 2, but also improves the strength and rigidity of the connection part. During the assembly and manufacturing process, the protrusion 3 plays a key positioning role, so that the cross beam 2 can be accurately installed between the boom plates 1, and is firmly connected to the boom plate 1 through high-strength welding technology or special fasteners, forming a stable and reliable support structure.

[0031] In addition, the presence of the protrusion 3 also brings another significant advantage, which is to improve the assembly and manufacturing accuracy of the boom plate 1 and the crossbeam 2. Since the protrusion 3 matches the shape of the crossbeam 2 and is tightly combined with the boom plate 1 through the stamping process, it is easier to achieve accurate positioning and fixation during the assembly process. This not only simplifies the manufacturing process and improves production efficiency, but also ensures that the overall quality and performance of the boom structure meet the design requirements.

[0032] First, the reinforcement protrusion 4 on the boom plate 1 is closely integrated with the one-piece stamping manufacturing process of the boom plate 1 itself. This process ensures that the reinforcement protrusion 4 and the boom plate 1 are seamlessly connected to form a solid whole. The shape of the reinforcement protrusion 4 is precisely calculated and perfectly matches the curve of the boom plate 1, thereby effectively optimizing the stress distribution without affecting the smoothness of the appearance, and significantly improving the bending and torsion resistance of the boom plate 1.

[0033] A reinforcing curling portion 5 is added to the edge of the boom plate 1. This design provides additional protection for the boom plate 1 by increasing the thickness and strength of the edge. The reinforcing curling portion 5 and the main body of the boom plate 1 are also manufactured using an integrated molding process to ensure the integrity and strength of the structure. In order to prevent the edge from deforming or cracking under extreme working conditions, a number of first reinforcing ribs 7 are welded between the reinforcing curling portion 5 and the reinforcing protrusion 4. The arrangement direction and spacing of these reinforcing ribs made of high-strength steel are precisely calculated to maximize the overall strength of the boom plate 1. In this way, the thickness of the boom plate 1 is reduced, material is saved, and the strength of the boom plate 1 is improved by the triangularly arranged reinforcing ribs.

[0034] In order to further improve the stability and safety of the structure, a first boss 8 is designed at both ends of the crossbeam 2, and a second boss 9 is fixedly set on the reinforcing boss 4. The two bosses are firmly connected to the crossbeam 2 and the reinforcing boss 4 through a welding process. On this basis, a first reinforcing rod 10 is also introduced, which is connected between the first boss 8 and the second boss 9, and is fastened by welding or high-strength screws to form a stable triangular support structure. This design greatly enhances the overall stability and load-bearing capacity of the boom structure, allowing it to remain stable when subjected to heavy loads or complex working conditions.

[0035] In order to further improve the strength and redundancy of the structure, a second reinforcing rod 11 is added between the first reinforcing rod 10 and the reinforcing protrusion 4. These two reinforcing rods and the reinforcing protrusion 4 together form a more complex triangular support system, which provides additional strength and stability for the boom structure. At the same time, fixing plates 12 are designed at both ends of the connection between the first reinforcing rod 10 and the second reinforcing rod 11, which are firmly fixed by welding or other fastening methods. These fixing plates 12 not only increase the strength of the connection part, but also improve the overall rigidity of the structure.

[0036] While pursuing strength and stability, the requirements of reducing weight and improving structural efficiency are also fully considered. Therefore, the crossbeam 2 is designed as a hollow structure, and an X-shaped reinforcement plate 13 is fixedly arranged inside it. This design not only ensures the rigidity and strength requirements of the crossbeam 2, but also effectively reduces the overall weight and improves the operating efficiency of the loader.

[0037] Finally, wear-resistant and corrosion-resistant bushings 14 are installed at the three key through holes 6 on the boom plate 1. These bushings 14 not only ensure good fit and long-term stable operation with the shaft or other rotating parts, but also further enhance the connection strength and stability between the bushings 14 and the boom plate 1 through the annular array of second reinforcing ribs 15 arranged on the outside of the bushings 14. These second reinforcing ribs 15 not only improve the overall strength of the structure, but also enhance the fatigue resistance of the boom plate 1 under complex working conditions.

[0038] In the utility model, the reinforcing protrusion 4 on the boom plate 1 is tightly combined with the boom plate 1 itself through an integrated stamping manufacturing process to form a solid whole, effectively optimize the stress distribution, and significantly improve the bending and torsional resistance of the boom plate 1.

[0039] The edge of the boom plate 1 is provided with a reinforcing curling portion 5, and the strength of the edge is enhanced by welding a plurality of first reinforcing ribs 7 to prevent deformation and cracking. The triangular arrangement of these first reinforcing ribs 7 further improves the overall strength of the boom plate 1.

[0040] A stable triangular support structure is formed by designing the first boss 8 at both ends of the cross beam 2, arranging the second boss 9 on the reinforcing protrusion 4, and introducing the first reinforcing rod 10 and the second reinforcing rod 11. This design greatly enhances the overall stability and load-bearing capacity of the boom structure.

[0041] The crossbeam 2 is designed as a hollow structure, and an X-shaped reinforcement plate 13 is fixed inside it. This design not only ensures the rigidity and strength requirements of the crossbeam 2, but also improves the overall strength by optimizing the internal structure. This design effectively reduces the weight of the crossbeam 2 while ensuring rigidity and strength, thereby reducing the weight of the entire boom structure.

[0042] A wear-resistant and corrosion-resistant sleeve 14 is installed at the position of the key through hole 6 on the boom plate 1, and the connection strength and stability between the sleeve 14 and the boom plate 1 are further enhanced by an annular array of second reinforcing ribs 15 arranged on the outside of the sleeve 14.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A loader boom structure, comprising a pair of boom plates (1), a crossbeam (2) being fixedly arranged between the boom plates (1), characterized in that: The boom plate (1) is fixedly provided with a protrusion (3), the shape of which matches the shape of the cross beam (2), the two ends of the cross beam (2) are fixedly connected to the boom plate (1) via the protrusions (3), the boom plate (1) is provided with a reinforcing protrusion (4) matching the curve of the boom plate (1), the edge of the boom plate (1) is provided with a reinforcing curling portion (5), and the boom plate (1) is provided with three through holes (6).

2. A loader boom structure according to claim 1, characterized in that: A plurality of first reinforcing ribs (7) are fixedly arranged between the reinforcing curling portion (5) and the reinforcing protrusion (4), and the first reinforcing ribs (7) are used to increase the strength of the boom plate (1).

3. A loader boom structure according to claim 2, characterized in that: A first boss (8) is provided at each end of the crossbeam (2), a second boss (9) is fixedly provided on the reinforcing protrusion (4), a first reinforcing rod (10) is fixedly provided between the first boss (8) and the second boss (9), and the first reinforcing rod (10), the crossbeam (2) and the reinforcing protrusion (4) form a triangular structure.

4. A loader boom structure according to claim 3, characterized in that: A second reinforcing rod (11) is fixedly arranged between the first reinforcing rod (10) and the reinforcing protrusion (4), and fixing plates (12) are fixedly arranged at both ends of the connection between the first reinforcing rod (10) and the second reinforcing rod (11), and the first reinforcing rod (10), the second reinforcing rod (11) and the reinforcing protrusion (4) also form a triangular structure.

5. The loader boom structure according to claim 2, characterized in that: The cross beam (2) is hollow, and an X-shaped reinforcing plate (13) is fixedly arranged in the cross beam (2).

6. A loader boom structure according to claim 1, characterized in that: Axle sleeves (14) are fixedly arranged at the positions of the three through holes (6).

7. A loader boom structure according to claim 6, characterized in that: A plurality of second reinforcing ribs (15) are fixedly arranged between the shaft sleeve (14) and the boom plate (1), and the second reinforcing ribs (15) are arranged in an annular array on the outside of the shaft sleeve (14).

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