Front drive axle swing frame structure and loader

Abstract

The utility model provides a front drive axle swing frame structure and a loader, a circular truncated cone, a boss I and a boss II are arranged between a middle connecting plate and a drive axle connecting shaft, the circular truncated cone is used in cooperation with a lining, and the boss I and the boss II are used in cooperation with an O-shaped ring; the middle connecting plate and the upper surfaces of the frame connecting plates on the two sides of the middle connecting plate form an integral plane structure; a plurality of mounting holes for connecting a frame are formed in the frame connecting plate; a plurality of bolt holes are formed in the middle connecting plate and are connected with gland bolts; the middle connecting plate is provided with an oil channel used for injecting lubricating agents into the drive axle connecting shaft. And the middle connecting plate is in transition connection with the frame connecting plate in a fillet manner. According to the utility model, while the structure of the swing frame is light, the local structure is optimized, the overall structural strength of the swing frame is improved, and stress concentration is reduced. When the loader passes through an uneven road surface, the front swing frame swings by a certain angle, the frame is kept in a horizontal state, and stable shoveling of the loader is guaranteed.

Description

Technical Field

[0001] The utility model relates to a front drive axle swing frame structure, belonging to the technical field of loaders. Background Art

[0002] At present, most loader drive axles are rigidly installed, that is, the drive axle is fixed on the frame through a connecting frame, and the rigidly installed drive axle itself cannot swing. In order to increase the stability of the vehicle during driving and prevent rollover when turning, it is necessary to add a connecting frame to cooperate with the frame so that the drive axle can swing relative to the frame. However, the swing angle of the drive axle of this structure is small, the structure is complex, the manufacturing cost is high, and the installation and maintenance are inconvenient. Summary of the invention

[0003] In view of the deficiencies in the prior art, the utility model provides a front drive axle swing frame structure, which can make the swing frame structure lightweight while optimizing the local structure to improve the overall structural strength and impact resistance of the swing frame.

[0004] The utility model is implemented according to the following technical solutions:

[0005] In a first aspect, the utility model provides a front drive axle swing frame structure, which is an integrated casting structure as a whole, including:

[0006] The middle connecting plate is provided with a large round through hole for assembling the drive axle connecting shaft;

[0007] Two frame connecting plates are respectively located at two ends of the middle connecting plate and are used to be fixed together with the frame; the two frame connecting plates and the upper surface of the middle connecting plate form an integral planar structure.

[0008] In some embodiments, the outer contour of the middle connecting plate is in the shape of an inverted triangle.

[0009] In some embodiments, a sealing assembly is provided between the inner circumferential surface of the large circular through hole and the outer circumferential surface of the drive axle connecting shaft.

[0010] In some embodiments, a groove formed by a circle of boss I and a circle of boss II is provided at one end of the inner circumference of the large circular through hole, and an O-ring is installed in the groove; the O-ring and boss I and boss II form a sealing assembly.

[0011] In some embodiments, a plurality of threaded holes are evenly spaced on the intermediate connecting plate around the large circular through hole, and an annular pressure plate is installed by a plurality of bolts; two bushings are installed on the inner circumferential surface of the intermediate connecting plate between the pressure plate and the side facing the sealing assembly, and the two bushings are isolated by a circle of frustum.

[0012] In some embodiments, the upper surface of the intermediate connecting plate is provided with an oil passage extending inward from the surface and communicating with the large circular through hole, and lubricant is injected into the drive axle connecting shaft through the oil passage.

[0013] In some embodiments, the middle connecting plate is also provided with a plurality of small round through holes for overall weight reduction.

[0014] In some embodiments, the frame connecting plate is a rectangular parallelepiped structure as a whole, and two frame connecting plates are symmetrically installed at both ends of the middle connecting plate; the frame connecting plate is provided with mounting holes for connecting to the frame.

[0015] In some embodiments, the middle connecting plate and the two frame connecting plates are transitionally connected by means of rounded corners.

[0016] In a second aspect, the utility model provides a loader equipped with the above-mentioned front drive axle swing frame structure.

[0017] Beneficial effects of the utility model:

[0018] The utility model makes the swing frame structure lightweight and optimizes the local structure, thereby improving the overall structural strength of the swing frame and reducing stress concentration. When the loader passes through an uneven road surface, the front swing frame swings to a certain angle, and the frame remains horizontal, ensuring that the loader digs smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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.

[0020] In the attached picture:

[0021] Figure 1 This is a schematic diagram of the structure of the front drive axle swing frame of the utility model;

[0022] Figure 2 It is a cross-sectional view of the front drive axle swing frame structure of the utility model.

[0023] Figure symbols: 1. middle connecting plate; 2. round table; 3. frame connecting plate; 4. bushing; 5. boss I; 6. boss II; 7. oil channel; 8. threaded hole; 9. small round through hole; 10. mounting hole; 11. O-ring; 12. pressure plate.

[0024] 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

[0025] 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.

[0026] 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.

[0027] 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.

[0028] like Figure 1 As shown, a front drive axle swing frame structure is an integrated cast structure, including an intermediate connecting plate 1 and two frame connecting plates 3; the intermediate connecting plate 1 is provided with a large round through hole for assembling the drive axle connecting shaft; the two frame connecting plates 3 are respectively located at both ends of the intermediate connecting plate 1 and are used to be fixed together with the frame; the two frame connecting plates 3 and the upper surface of the intermediate connecting plate 1 form an integral planar structure.

[0029] Continuing to refer to FIG. 1 , the outer contour of the middle connecting plate 1 is in the shape of an inverted triangle, so as to further increase the strength of the overall structure.

[0030] Further solutions, such as Figure 2 As shown, a sealing component is provided between the inner circumference of the large circular through hole and the outer circumference of the drive axle connecting shaft.

[0031] The preferred solution is to continue to refer to Figure 2As shown, one end of the inner circumference of the large circular through hole is provided with a groove formed by a circle of bosses Ⅰ5 and a circle of bosses Ⅱ6, and an O-ring 11 is installed in the groove; the O-ring 11 and the bosses Ⅰ5 and Ⅱ6 form a sealing assembly.

[0032] Further solutions, such as Figure 2 As shown, a plurality of threaded holes 8 are evenly spaced on the intermediate connecting plate 1 around the large circular through hole, and an annular pressure plate 12 is installed by a plurality of bolts; two bushings 4 are installed on the inner circumferential surface of the intermediate connecting plate 1 between the pressure plate 12 and the side facing the sealing assembly, and the two bushings 4 are isolated by a circle of frustum 2.

[0033] Further solutions, such as Figure 1 , Figure 2 As shown, the upper surface of the intermediate connecting plate 1 is provided with an oil passage 7 extending inwardly from the surface and communicating with the large circular through hole, and lubricant is injected into the drive axle connecting shaft through the oil passage 7.

[0034] Further solutions, such as Figure 1 , Figure 2 As shown, the middle connecting plate 1 is also provided with a plurality of small round through holes 9 for reducing the overall weight.

[0035] Further solutions, such as Figure 1 As shown, the frame connecting plate 3 is a rectangular parallelepiped structure as a whole, and two frame connecting plates 3 are symmetrically installed at the two ends of the middle connecting plate 1; the frame connecting plate 3 is provided with a mounting hole 10 for connecting to the frame.

[0036] Further solutions, such as Figure 1 As shown, the middle connecting plate 1 and the two frame connecting plates 3 are transitionally connected by chamfering to increase the strength of the connecting parts and reduce stress concentration.

[0037] The utility model also provides a loader which is equipped with the front drive axle swing frame structure.

[0038] In summary, the utility model provides a front drive axle swing frame structure, wherein a round table, boss I and boss II are provided between the middle connecting plate and the drive axle connecting shaft, the round table is used in conjunction with a bushing, and boss I and boss II are used in conjunction with an O-ring; the middle connecting plate and the upper surface of the frame connecting plates on both sides thereof form an integral plane structure; the frame connecting plate is provided with a number of mounting holes for connecting the frame; the middle connecting plate is provided with a number of bolt holes connected with the gland bolts; the middle connecting plate is provided with an oil channel for injecting lubricant into the drive axle connecting shaft; the middle connecting plate and the frame connecting plate are transitionally connected by a rounded corner, thereby increasing the strength of the connection part and reducing stress concentration. The utility model makes the swing frame structure lightweight while optimizing the local structure, thereby increasing the overall structural strength of the swing frame and reducing stress concentration. When the loader passes through an uneven road surface, the front swing frame swings a certain angle, and the frame remains horizontal, thereby ensuring that the loader digs smoothly.

[0039] 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.

[0040] 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.

[0041] 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 front drive axle swing frame structure, characterized in that: The overall structure is an integrated casting structure, including: The middle connecting plate is provided with a large round through hole for assembling the drive axle connecting shaft; Two frame connecting plates are respectively located at two ends of the middle connecting plate and are used to be fixed together with the frame; the two frame connecting plates and the upper surface of the middle connecting plate form an integral planar structure.

2. The front drive axle swing frame structure according to claim 1, characterized in that: The outer contour of the middle connecting plate is in an inverted triangle shape.

3. The front drive axle swing frame structure according to claim 1, characterized in that: A sealing component is arranged between the inner circumference surface of the large circular through hole and the outer circumference surface of the driving axle connecting shaft.

4. The front drive axle swing frame structure according to claim 3, characterized in that: A groove formed by a circle of boss I and a circle of boss II is provided at one end of the inner circumference of the large circular through hole, and an O-ring is installed in the groove; the O-ring and boss I and boss II form a sealing assembly.

5. The front drive axle swing frame structure according to claim 3, characterized in that: A plurality of threaded holes are evenly spaced on the middle connecting plate around the large round through hole, and an annular pressing plate is installed by a plurality of bolts; Two bushings are installed on the inner circumferential surface of the middle connecting plate between the side surfaces facing each other of the pressure plate and the sealing assembly, and the two bushings are isolated by a circle of frustum.

6. The front drive axle swing frame structure according to claim 3, characterized in that: The upper surface of the intermediate connecting plate is provided with an oil passage extending inwardly from the surface and communicating with the large circular through hole, and lubricant is injected into the drive axle connecting shaft through the oil passage.

7. The front drive axle swing frame structure according to claim 1, characterized in that: The middle connecting plate is also provided with a plurality of small round through holes for reducing the overall weight.

8. The front drive axle swing frame structure according to claim 1, characterized in that: The frame connecting plate is a rectangular parallelepiped structure as a whole, and two frame connecting plates are symmetrically installed at two ends of the middle connecting plate; the frame connecting plate is provided with mounting holes for connecting the frame.

9. The front drive axle swing frame structure according to claim 1, characterized in that: The middle connecting plate and the two frame connecting plates are transitionally connected by using rounded corners.

10. A loader, characterized in that: A front drive axle swing frame structure as claimed in any one of claims 1 to 9 is installed.

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