Rocker arm structure, working device and loader

Abstract

The utility model discloses a rocker arm structure, a working device and a loader. The rocker arm structure comprises an annular rod-shaped structure, a transition plate, a pair of opposite upper connecting plates, a pair of opposite lower connecting plates and a pair of opposite middle connecting plates, the annular rod-shaped structure is composed of an outer side plate, an inner side plate, an upper end plate and a lower end plate. The transition plate is arranged in the middle area of the inner ring of the rod-shaped structure, and a middle hinge hole is formed in the transition plate; the two upper connecting plates are mounted at the top of the rod-shaped structure, and upper hinge holes are formed in the upper connecting plates; the two lower connecting plates are mounted at the bottom of the rod-shaped structure, and lower hinge holes are formed in the lower connecting plates; the middle connecting plates are installed on the upper portion and the lower portion of the inner ring of the rod-shaped structure respectively, and the geometric contours of the middle connecting plates are matched with the contours of the corresponding inner ring areas. According to the rocker arm structure, the local structure is optimized while the rocker arm structure is lightened, the overall structural strength of the rocker arm is improved, and stress concentration is avoided.

Description

Technical Field

[0001] The utility model relates to a novel rocker arm structure and belongs to the technical field of loaders. Background Art

[0002] The rocker arm of the loader is one of the key components for transferring loads to achieve loading, unloading and transportation. It is also one of the components that is most easily damaged during operation.

[0003] The traditional loader industry mainly uses an open rocker arm structure. The open rocker arm is very likely to cause distortion and deformation due to working dead points or improper operation during operation. Therefore, general damage mainly occurs in the area where stress concentration and plate stiffness are weak. Simply increasing the plate thickness will increase costs and workload, and the old rocker arm is difficult to install. Summary of the invention

[0004] In view of the deficiencies in the prior art, the utility model provides a novel rocker arm structure, which can make the rocker arm structure lightweight while optimizing the local structure to improve the overall structural strength of the rocker arm.

[0005] The utility model is implemented according to the following technical solutions:

[0006] In a first aspect, the utility model provides a rocker arm structure, characterized in that the rocker arm is an integrated cast steel structure, comprising:

[0007] An annular rod-like structure consisting of an outer plate, an inner plate, an upper end plate, and a lower end plate;

[0008] A transition plate is arranged in the middle area of ​​the inner ring of the rod-shaped structure, and a middle hinge hole is provided on the transition plate;

[0009] A pair of upper connecting plates facing each other are mounted on the top of the rod-shaped structure, and upper hinge holes are provided on the upper connecting plates;

[0010] A pair of lower connecting plates facing each other are installed at the bottom of the rod-shaped structure, and lower hinge holes are provided on the lower connecting plates;

[0011] The middle connecting plate is respectively installed on the upper and lower regions of the inner ring of the rod-shaped structure, and the geometric profile of the middle connecting plate is adapted to the corresponding inner ring region profile.

[0012] In some embodiments, the outer plate, the inner plate and the middle connecting plate all adopt a variable cross-section and variable thickness structure, and the overall shape is wide at the top and narrow at the bottom with a certain curvature.

[0013] In some embodiments, a rocker arm pin fixing block is installed on the outer side surface of the upper connecting plate II of the two upper connecting plates, and a rocker arm pin fixing block is also installed on the outer side surface of the lower connecting plate II on the same side as the upper connecting plate II.

[0014] In some embodiments, a rocker pin lubrication mechanism is provided between the transition plate and the middle hinge hole.

[0015] In some embodiments, a boss is provided on each side of the transition plate to surround the middle hinge hole.

[0016] In some embodiments, the inner side and the outer side of the upper connecting plate are provided with a boss surrounding the upper hinge hole.

[0017] In some embodiments, the inner side and the outer side of the lower connecting plate are provided with a boss surrounding the lower hinge hole.

[0018] In some embodiments, the outer plate, the inner plate, the upper end plate, the lower end plate, the transition plate, the upper connecting plate, the lower connecting plate and the middle connecting plate all have rounded corners between their interconnected surfaces.

[0019] In a second aspect, the utility model provides a working device, including a movable arm, on the crossbeam of which the above-mentioned rocker arm structure is installed.

[0020] In a third aspect, the utility model provides a loader equipped with the above-mentioned rocker arm structure; or, equipped with the above-mentioned working device.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The utility model provides a novel rocker arm structure, in which the outer side plate, the inner side plate and the middle connecting plate all adopt variable cross-section and variable thickness structures, which can make the rocker arm structure lightweight while optimizing the local structure, thereby improving the overall structural strength of the rocker arm and avoiding stress concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0024] In the attached picture:

[0025] Figure 1 It is an overall schematic diagram of the rocker arm structure of the utility model.

[0026] Figure identification: 1. Outer plate; 2. Inner plate; 3. Upper end plate; 4. Lower end plate; 5. Upper hinge hole; 6. Middle hinge hole; 7. Lower hinge hole; 8. Upper connecting plate I; 9. Upper connecting plate II; 10. Lower connecting plate I; 11. Lower connecting plate II; 12. Inner boss; 13. Outer boss; 14. Boss; 15. Transition plate; 16. Middle connecting plate; 21. Pin fixing block; 22. Pin lubrication mechanism.

[0027] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] like Figure 1As shown, a rocker arm structure is an integrated cast steel structure, including an annular rod-shaped structure, a transition plate 15, a pair of upper connecting plates 8, 9 opposite to each other, a pair of lower connecting plates 10, 11 opposite to each other and an intermediate connecting plate 16; the annular rod-shaped structure is composed of an outer plate 1, an inner plate 2, an upper end plate 3 and a lower end plate 4; the transition plate 15 is arranged in the middle area of ​​the inner ring of the rod-shaped structure, and an intermediate hinge hole 6 is provided on the transition plate 15; the upper connecting plates I8 and II9 are installed on the top of the rod-shaped structure, and the upper connecting plates I8 and II9 are provided with upper hinge holes 5; the lower connecting plates I10 and II11 are installed at the bottom of the rod-shaped structure, and the lower connecting plates I10 and II11 are provided with lower hinge holes 7; the intermediate connecting plate 16 is respectively installed in the upper and lower areas of the inner ring of the rod-shaped structure, and the geometric contour of the intermediate connecting plate 16 is adapted to the contour of the corresponding inner ring area.

[0032] For further solutions, please refer to Figure 1 As shown, the outer side plate 1, the inner side plate 2 and the middle connecting plate 16 all adopt a variable cross-section and variable thickness structure, and the overall shape is wide at the top and narrow at the bottom with a certain curvature.

[0033] For further solutions, please refer to Figure 1 As shown, a rocker arm pin fixing block 21 is installed on the outer side of the upper connecting plate II9, and a rocker arm pin fixing block 21 is also installed on the outer side of the lower connecting plate II11 on the same side as the upper connecting plate II9.

[0034] For further solutions, please refer to Figure 1 As shown, a rocker arm pin lubrication mechanism 22 is provided between the transition plate 15 and the middle hinge hole 6 .

[0035] For further solutions, please refer to Figure 1 As shown, each side surface of the transition plate 15 is provided with a boss 14 surrounding the middle hinge hole 6. The inner sides of the upper connecting plate I8, the upper connecting plate II9, the lower connecting plate I10, and the lower connecting plate II11 are provided with an inner boss 12 surrounding the hinge hole, and the outer sides of the upper connecting plate I8, the upper connecting plate II9, the lower connecting plate I10, and the lower connecting plate II11 are provided with an outer boss 13 surrounding the hinge hole.

[0036] For further solutions, please refer to Figure 1 As shown, the outer plate 1, the inner plate 2, the upper end plate 3, the lower end plate 4, the upper connecting plate I8, the upper connecting plate II9, the lower connecting plate I10, the lower connecting plate II11, the transition plate 15 and the middle connecting plate 16 are all connected with each other using chamfered transitions.

[0037] The utility model provides a novel rocker arm structure, in which the outer side plate, the inner side plate and the middle connecting plate all adopt variable cross-section and variable thickness structures, which can make the rocker arm structure lightweight while optimizing the local structure, thereby improving the overall structural strength of the rocker arm and avoiding stress concentration.

[0038] The utility model also provides a working device, comprising a movable arm, on the crossbeam of the movable arm is installed the rocker arm structure.

[0039] The utility model also provides a loader, which is equipped with the above-mentioned rocker arm structure; or, is equipped with the above-mentioned working device.

[0040] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0041] In addition, those skilled in the art will understand that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments also means being within the scope of protection of the present utility model and forming different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by the present application.

[0042] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this patent can make some changes or modify the technical content suggested above into an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of the solution of the utility model.

Claims

1. A rocker arm structure, characterized in that: The rocker arm is a one-piece cast steel structure, including: An annular rod-like structure consisting of an outer plate, an inner plate, an upper end plate, and a lower end plate; A transition plate is arranged in the middle area of ​​the inner ring of the rod-shaped structure, and a middle hinge hole is provided on the transition plate; A pair of upper connecting plates facing each other are mounted on the top of the rod-shaped structure, and upper hinge holes are provided on the upper connecting plates; A pair of lower connecting plates facing each other are installed at the bottom of the rod-shaped structure, and lower hinge holes are provided on the lower connecting plates; The middle connecting plate is respectively installed on the upper and lower regions of the inner ring of the rod-shaped structure, and the geometric profile of the middle connecting plate is adapted to the corresponding inner ring region profile.

2. A rocker arm structure according to claim 1, characterized in that: The outer side plate, the inner side plate and the middle connecting plate all adopt a variable cross-section and variable thickness structure, and the overall shape is wide at the top and narrow at the bottom with a certain curvature.

3. A rocker arm structure according to claim 1, characterized in that: A rocker arm pin shaft fixing block is installed on the outer side surface of the upper connecting plate II of the two upper connecting plates, and a rocker arm pin shaft fixing block is also installed on the outer side surface of the lower connecting plate II on the same side as the upper connecting plate II.

4. A rocker arm structure according to claim 1, characterized in that: A rocker arm pin lubrication mechanism is provided between the transition plate and the middle hinge hole.

5. A rocker arm structure according to claim 1, characterized in that: A boss is respectively provided on the two side surfaces of the transition plate and surrounds the middle hinge hole.

6. A rocker arm structure according to claim 1, characterized in that: The inner side surface and the outer side surface of the upper connecting plate are provided with a boss surrounding the upper hinge hole.

7. A rocker arm structure according to claim 1, characterized in that: The inner side surface and the outer side surface of the lower connecting plate are provided with a boss surrounding the lower hinge hole.

8. The rocker arm structure according to claim 1, characterized in that: The outer side plate, the inner side plate, the upper end plate, the lower end plate, the transition plate, the upper connecting plate, the lower connecting plate and the middle connecting plate are connected to each other with rounded corners.

9. A working device, comprising a movable arm, characterized in that: The rocker arm structure according to any one of claims 1 to 8 is installed on the crossbeam of the boom.

10. A loader, characterized in that: A rocker arm structure according to any one of claims 1 to 8 is installed; or a working device according to claim 9 is installed.

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