Integrated rocker arm

Abstract

The utility model discloses an integrated rocker arm which comprises a back plate and a web plate, the middle of the back plate and the middle of the web plate are connected through a middle supporting plate, and the upper end of the back plate and the upper end of the web plate are connected through an upper fixing plate I and an upper fixing plate II which are symmetrical to each other to form an integrated upper connecting end. The lower end of the back plate and the lower end of the web plate are connected through a lower fixing plate I and a lower fixing plate II which are symmetrical to each other to form an integrated lower connecting end, a middle connecting column is arranged in the middle of the middle supporting plate, and the middle connecting column is in transition connection with the web plate and the middle supporting plate through smooth curved surfaces. The middle connecting column is fixedly connected with the back plate through a rib plate; the rocker arm has high flexural rigidity and strength while the weight is reduced, and the performance and reliability of the rocker arm of the loader are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to loader technical field especially relates to an integrated rocker arm. BACKGROUND

[0002] The rocker arm is one of the key components of the loader working device, and plays a role in load transmission and process positioning during the working process. The rocker arm of the conventional loader uses an open type welded rocker arm structure. The working connecting rod of the open type welded rocker arm has a dead point and welding defects, which can easily cause the rocker arm to bend and deform or even break. The damage mainly occurs in the stress concentration area and the weak rigidity area. Increasing the thickness of the plate cannot improve its inherent defects. Moreover, the old rocker arm is relatively complicated to process and install, which leads to the decrease of the precision of the working device. SUMMARY

[0003] To solve the above problems in the prior art, the utility model provides an integrated rocker arm, which comprises: a back plate and a web plate, the back plate and the web plate are connected through an intermediate support plate in the middle, the upper ends of the back plate and the web plate are connected to form an integrated upper connecting end through mutually symmetrical upper fixed plates I and II, the lower ends of the back plate and the web plate are connected to form an integrated lower connecting end through mutually symmetrical lower fixed plates I and II, and the intermediate support plate is provided with an intermediate connecting column in the middle, wherein the intermediate connecting column is connected to the web plate and the intermediate support plate through a smooth curved surface, and the intermediate connecting column is fixedly connected to the back plate through a rib plate.

[0004] Further, at least two rib plates with uniform spacing are arranged between the intermediate connecting column and the back plate, and a cavity is arranged between adjacent rib plates.

[0005] Further, the intermediate support plate is further provided with a weight-reducing hole, and the weight-reducing hole is arranged on one side or both sides of the intermediate connecting column.

[0006] Further, the back plate and the web plate are both arc-shaped plates, and the upper and lower ends of the back plate and the web plate are curved in the same direction, so that the integrated rocker arm is in the shape of a crescent moon.

[0007] Further, the upper fixed plates I and II are arranged in parallel and are provided with coaxial upper pin shaft holes in the middle; and the lower fixed plates I and II are arranged in parallel and are provided with coaxial lower pin shaft holes in the middle.

[0008] Further, the inner sides of the upper fixed plates I and II are both provided with inner flange tables, and the outer sides are both provided with outer flange tables; and the inner sides of the lower fixed plates I and II are both provided with inner flange tables.

[0009] Furthermore, the upper fixing plate I, the upper fixing plate II and the intermediate support plate are connected by an upper transition plate with a smooth curved surface, and the lower fixing plate I, the lower fixing plate II and the intermediate support plate are connected by a lower transition plate with a smooth curved surface.

[0010] Furthermore, the intermediate connecting post is provided with an intermediate pin hole in the middle, and the outer side of the intermediate connecting post is provided with a pin lubrication hole that communicates with the intermediate pin hole.

[0011] Furthermore, both the upper fixing plate I and the lower fixing plate I have fixing blocks on their outer sides.

[0012] Furthermore, the integrated rocker arm is a casting.

[0013] Compared with the prior art, the integrated rocker arm of this utility model has the following advantages:

[0014] The integrated rocker arm in this embodiment adopts a one-piece cast structure. A stable structural frame is formed by connecting the back plate, web plate, and intermediate support plate. A central connecting column is located in the middle of the intermediate support plate, and integrated upper and lower connecting ends are formed at both ends of the back plate and web plate, respectively. The central connecting column is fixedly connected to the back plate and web plate by stiffening plates, enabling the rocker arm to achieve high bending stiffness and strength while reducing weight. This improves the performance and reliability of the loader rocker arm, reduces maintenance and replacement costs, and simultaneously enhances the overall working efficiency and safety of the loader. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the integrated rocker arm of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the integrated rocker arm of this utility model;

[0017] In the diagram: 1. Back plate; 2. Web plate; 3. Intermediate support plate; 4. Upper transition plate; 5. Lower transition plate; 6. Upper pin hole; 7. Intermediate connecting column; 8. Lower pin hole; 9. Upper fixing plate I; 10. Upper fixing plate II; 11. Lower fixing plate I; 12. Lower fixing plate II; 13. Outer flange platform; 14. Inner flange platform; 15. Intermediate pin hole; 16. Rib plate; 17. Weight reduction hole. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0019] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] like Figure 1 As shown, this utility model discloses an integrated rocker arm, which is used in conjunction with the boom beam of a loader and adopts an integrated casting structure. It includes a back plate 1 and a web plate 2, connected by a central support plate 3. The upper ends of the back plate 1 and web plate 2 are connected by symmetrical upper fixing plates I 9 and II 10 to form an integrated upper connecting end. The lower ends of the back plate 1 and web plate 2 are connected by symmetrical lower fixing plates I 11 and II 12 to form an integrated lower connecting end. Both the upper and lower connecting ends can be rotatably connected to the boom. A central connecting column 7 is provided in the middle of the central support plate 3, wherein the central connecting column 7 is smoothly connected to the web plate 2 and the central support plate 3 via a smooth curved surface transition, and the central connecting column 7 is fixedly connected to the back plate 1 by a stiffening plate 16.

[0022] In this embodiment, the integrated rocker arm is connected by a back plate 1, a web plate 2, and an intermediate support plate 3 to form a stable structural body. An intermediate connecting column 7 is provided in the middle of the intermediate support plate 3. Integrated upper and lower connecting ends are formed at both ends of the back plate 1 and the web plate 2, respectively. This allows the rocker arm to achieve high bending stiffness and strength while reducing weight. This improves the performance and reliability of the loader rocker arm, reduces maintenance and replacement costs, and simultaneously enhances the overall working efficiency and safety of the loader.

[0023] Specifically, at least two evenly spaced stiffening ribs 16 are provided between the intermediate connecting column 7 and the back plate 1, with a cavity between adjacent stiffening ribs 16. In this embodiment, two symmetrically arranged stiffening ribs 16 are provided between the intermediate connecting column 7 and the back plate 1, providing sufficient structural strength for the intermediate connecting column 7. Simultaneously, the cavity structure between the two stiffening ribs 16 reduces redundant weight, enabling the rocker arm to achieve high bending stiffness and strength while reducing weight, thus improving the performance and reliability of the loader rocker arm. This approach ensures structural strength between the intermediate connecting column 7 and the back plate 1 while reducing the weight of the rocker arm. It effectively balances the design contradiction between structural weight and structural stiffness and strength, resulting in a lighter rocker arm with stronger fatigue resistance.

[0024] In addition, the intermediate support plate 3 is provided with weight-reducing holes 17, which are located on one or both sides of the intermediate connecting column 7. The number and shape of the weight-reducing holes 17 can be selected according to actual needs; for example, the shape of the weight-reducing holes 17 can be rectangular, trapezoidal, circular, or elliptical. In this embodiment, the weight-reducing holes 17 are trapezoidal in shape, and there are two of them, symmetrically arranged on both sides of the intermediate connecting column. The design of the weight-reducing holes 17 further reduces the redundant weight of the rocker arm.

[0025] Furthermore, the back plate 1 and the web plate 2 are curved plates, with both ends of the back plate 1 and the web plate 2 curving in the same direction, making the integrated rocker arm crescent-shaped. The curved structure can better distribute stress, improve the load-bearing capacity of the structure, and also help reduce deformation and wear during use.

[0026] In some embodiments, upper fixing plates I9 and II10 are respectively connected to the left and right sides of the upper ends of the back plate 1 and the web plate 2, forming an integral upper connecting end with a fork-shaped structure. An active space for connecting the boom is formed between the upper fixing plates I9 and II10. The upper fixing plates I9 and II10 are arranged in parallel, and each has a coaxial upper pin hole 6 in the middle; this is used for hinged connection with the boom via a pin, so that the boom can be rotatably connected to the integral upper connecting end with the fork-shaped structure. Simultaneously, the upper fixing plates I9 and II10 have inner flange platforms 14 and outer flange platforms 13 on their inner and outer sides, respectively. The flange platforms provide a support surface or connection point for the boom, increasing the strength and stability of the connection. After the upper fixing plates I9 and II10 are hinged to the boom, the boom applies a working load to the upper fixing plates I9 and II10 for a long time, making the upper fixing plates I9 and II10 prone to bending deformation or even breakage. To increase the structural strength of the upper fixed plate I9 and upper fixed plate II10, the upper fixed plate I9 and upper fixed plate II10 are connected to the intermediate support plate 3 by an upper transition plate 4 with a smooth curved surface; thereby improving the reliability of the rocker arm.

[0027] In some embodiments, lower fixing plates I11 and II12 are respectively connected to the left and right sides of the lower end of the back plate 1 and the web plate 2, forming an integrated lower connecting end with a fork-shaped structure. An active space for connecting the boom is formed between the lower fixing plates I11 and II12. At the same time, the lower fixing plates I11 and II12 are connected to the intermediate support plate 3 through a lower transition plate 5. The transition plate further increases the structural strength of the integrated upper connecting end, improving the performance and reliability of the loader boom.

[0028] The lower fixing plate I11 and the lower fixing plate II12 are arranged in parallel, and both the lower fixing plate I11 and the lower fixing plate II12 are provided with coaxial lower pin holes 8 in the middle; at the same time, the lower fixing plate I11 and the lower fixing plate II12 are provided with inner flange platforms 14 on the inner side.

[0029] In some embodiments, a pin lubrication hole is provided on the outer side of the intermediate connecting post 7, and the pin lubrication hole communicates with the intermediate pin hole 15. This facilitates the flow of lubricant from the pin lubrication hole into the intermediate pin hole 15, ensuring that the pin is adequately lubricated during operation, reducing heat and wear caused by friction, thereby improving the efficiency and lifespan of mechanical components.

[0030] In some embodiments, fixing blocks are provided on the outer sides of both the upper fixing plate I9 and the lower fixing plate I11 to ensure that the pin will not rotate during use, thereby increasing the stability of the connection structure.

[0031] In some embodiments, the back plate 1, the web plate 2, and the intermediate support plate 3 all adopt a topological variable cross-section structure.

[0032] It is understood that the specific embodiments described herein are merely one example of the present invention, and those skilled in the art can make various changes or equivalent substitutions to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are protected by the present invention.

Claims

1. A one-piece rocker arm, characterized in that, include: The back plate (1) and the web plate (2) are connected by a middle support plate (3). The upper ends of the back plate (1) and the web plate (2) are connected by mutually symmetrical upper fixing plates I (9) and II (10) to form an integrated upper connecting end. The lower ends of the back plate (1) and the web plate (2) are connected by mutually symmetrical lower fixing plates I (11) and II (12) to form an integrated lower connecting end. The middle support plate (3) is provided with a middle connecting column (7). The middle connecting column (7) is connected to the web plate (2) and the middle support plate (3) through a smooth curved surface transition. The middle connecting column (7) is fixedly connected to the back plate (1) through a stiffening plate (16).

2. The integrated rocker arm according to claim 1, characterized in that, At least two evenly spaced stiffeners (16) are provided between the intermediate connecting column (7) and the back plate (1), and a cavity is provided between adjacent stiffeners (16).

3. The integrated rocker arm according to claim 1, characterized in that, The intermediate support plate (3) is also provided with a weight reduction hole (17), which is located on one or both sides of the intermediate connecting column (7).

4. The integrated rocker arm according to claim 1, characterized in that, Both the back plate (1) and the belly plate (2) are arc-shaped plates. The upper and lower ends of the back plate (1) and the belly plate (2) are bent in the same direction, making the integrated rocker arm crescent-shaped.

5. The integrated rocker arm according to claim 1, characterized in that, The upper fixing plate I (9) and the upper fixing plate II (10) are arranged in parallel, with a coaxial upper pin hole (6) in the middle between them; the lower fixing plate I (11) and the lower fixing plate II (12) are arranged in parallel, with a coaxial lower pin hole (8) in the middle between them.

6. The integrated rocker arm according to claim 5, characterized in that, The inner side of the upper fixing plate I (9) and the upper fixing plate II (10) are provided with an inner flange platform (14), and the outer side of the upper fixing plate II (13) are provided with an outer flange platform (13). The inner side of the lower fixing plate I (11) and the lower fixing plate II (12) are provided with an inner flange platform (14).

7. The integrated rocker arm according to claim 1, characterized in that, The upper fixing plate I (9), the upper fixing plate II (10) and the middle support plate (3) are connected by an upper transition plate (4) with a smooth curved surface, and the lower fixing plate I (11), the lower fixing plate II (12) and the middle support plate (3) are connected by a lower transition plate (5) with a smooth curved surface.

8. The integrated rocker arm according to claim 1, characterized in that, The intermediate connecting post (7) has an intermediate pin hole (15) in the middle, and the outer side of the intermediate connecting post (7) has a pin lubrication hole that communicates with the intermediate pin hole.

9. The integrated rocker arm according to claim 1, characterized in that, Both the upper fixing plate I (9) and the lower fixing plate I (11) are provided with fixing blocks on their outer sides.

10. The integrated rocker arm according to any one of claims 1-9, characterized in that, The integrated rocker arm is a casting.

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