Front cross beam for loading machine and loading machine

Abstract

The utility model relates to the technical field of engineering machinery, and provides a front cross beam for a loading machine and the loading machine, the front cross beam comprises a first connecting plate and a second connecting plate which is symmetrically arranged with the first connecting plate, and the first connecting plate and the second connecting plate are vertically fixed on a bearing plate. The front end of the bearing plate is connected with the front end of the bottom plate, and the rear end of the bearing plate is connected with the rear end of the bottom plate to form a cavity structure; and a plurality of rib plates are arranged in the cavity structure. The front cross beam is provided with the cavity structure which is used for reducing the overall weight of the front cross beam, and meanwhile the three rib plates are arranged in the cavity structure, so that the structural strength of the front cross beam is improved. Compared with a front cross beam formed by welding all parts in the prior art, the front cross beam is integrally manufactured by adopting a casting process, and welding seams do not exist, so that the front cross beam is higher in structural strength, better in stability, longer in service life and better in stress resistance effect.

Description

Technical Field

[0001] The utility model relates to the technical field of construction machinery, and particularly relates to a front cross beam for a loader and a loader. Background Technique

[0002] The statements in this part only provide background technical information related to the utility model, and do not necessarily constitute prior art.

[0003] Since the front cross beam is used to fix the bucket cylinder in the front frame of the loader, when the whole loader is working, the stress generated by materials, the bucket, the boom, etc. will be transmitted to the front cross beam. Therefore, the structural strength of the front cross beam itself directly affects the working life of the whole loader.

[0004] However, the structural strength of the front cross beam in the prior art is insufficient for the working environment of large-tonnage loaders. For example, in the patent with the publication number CN219638009U, although it discloses a front cross beam structure that can fix the bucket cylinder to the front frame, it does not improve the structural strength of the front cross beam itself, but additionally adds a strengthening structure to counteract the stress effect, while increasing the overall weight of the front frame, increasing the production cost and the later maintenance cost. Content of the Utility Model

[0005] The purpose of the utility model is to provide a front cross beam for a loader and a loader to solve the technical problem of low structural strength of the front cross beam itself in the background technique.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The first aspect of the utility model provides a front cross beam for a loader, including: a first connecting plate and a second connecting plate symmetrically arranged therewith. The first connecting plate and the second connecting plate are vertically fixed on a receiving plate. The front end of the receiving plate is connected to the front end of the bottom plate, and the rear end of the receiving plate is connected to the rear end of the bottom plate respectively, forming a cavity structure; a plurality of rib plates are arranged in the cavity structure.

[0008] Further, the first connecting plate and the second connecting plate are arranged in parallel.

[0009] Further, the first connecting plate includes a curved surface and a first plane and a second plane connected thereto.

[0010] Further, the first plane extends along the tangential direction of one side of the curved surface to the front end of the receiving plate.

[0011] Further, the second plane extends along the tangential direction of the other side of the curved surface to the rear end of the receiving plate.

[0012] Furthermore, a mounting hole is provided on the first connecting plate at a position close to the curved surface.

[0013] Furthermore, the receiving plate is connected to the front end of the base plate to form a front welding edge at the intersection, and the receiving plate is connected to the rear end of the base plate to form a rear fixed edge at the intersection, and a warping structure with both sides of the rear fixed edge warped upward.

[0014] Furthermore, there are three ribs, including a first rib, a second rib and a third rib.

[0015] Furthermore, the first rib plate is fixedly arranged in the middle part of the cavity structure, parallel to the front welding edge, with the top end fixedly connected to the receiving plate and the bottom end fixedly connected to the bottom plate.

[0016] Furthermore, the second rib plate and the third rib plate are symmetrically arranged, and both are perpendicular to the first rib plate.

[0017] The second aspect of the utility model provides a loader, which adopts the front cross beam as described in the first aspect to achieve the fixation of the front frame of the loader and the bucket cylinder.

[0018] The technical solution of the utility model has the following beneficial effects:

[0019] 1. The front cross beam of the utility model is provided with a cavity structure to reduce the overall weight of the front cross beam. At the same time, three ribs are provided in the cavity structure to improve the structural strength of the front cross beam itself.

[0020] 2. Compared with the front cross beam in the prior art which is composed of various parts welded together, the front cross beam of the utility model is made of an integrated casting process as a whole, without any welds, so it has higher structural strength, better stability, longer service life, and better stress resistance.

[0021] Advantages of additional aspects of the present invention will be partially given in the following description, and partially become apparent from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0023] Figure 1 It is an overall schematic diagram of the front cross beam of the utility model.

[0024] Figure 2 It is an overall schematic diagram of the front cross beam of the utility model from another angle.

[0025] Figure 3Schematic diagram of the rib plate structure of the front crossbeam of the present utility model.

[0026] Figure 4 Schematic diagram of the warped structure of the front crossbeam of the present utility model.

[0027] Markings in the figure: 1, the first connecting plate; 100, the curved surface; 101, the first plane; 102, the second plane; 2, the second connecting plate; 3, the receiving plate; 31, the first warped structure; 32, the second warped structure; 301, the front welding edge; 302, the rear fixing edge; 4, the bottom plate; 41, the bottom plate rib; 5, the cavity structure; 6, the mounting hole; 7, the rib plate; 701, the first rib plate; 702, the second rib plate; 703, the third rib plate. Detailed implementation manners

[0028] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further explanations of the present utility model. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs.

[0029] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary implementation manners according to the present utility model.

[0030] In the case of no conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0031] Embodiment 1

[0032] As Figures 1-4 shown, this embodiment discloses a front crossbeam for a loader; it includes a first connecting plate 1 and a second connecting plate 2 with the same structure as it, and the first connecting plate 1 and the second connecting plate 2 are vertically fixed on the receiving plate 3.

[0033] In some implementation manners, the first connecting plate 1 and the second connecting plate 2 are arranged in parallel.

[0034] Since the first connecting plate 1 and the second connecting plate 2 have the same shape, size and structure, therefore, in this embodiment, the first connecting plate 1 is taken as an example to describe it in detail.

[0035] In some implementation manners, the first connecting plate 1 includes a curved surface 100 with a convex arc structure and the first plane 101 and the second plane 102 connected thereto. The first plane 101 extends to the front end of the receiving plate 3 through a concave arc transition along the tangent direction of one side of the curved surface 100, and the width of the concave arc gradually increases; the second plane 102 extends to the rear end of the receiving plate 3 through a concave arc transition along the tangent direction of the other side of the curved surface 100, and the width of the concave arc gradually increases. However, the first connecting plate 1 and the second connecting plate 2 will not be connected or joined, and always maintain a set distance.

[0036] The first plane 101 and the second plane 102 adapt to the convex curvature of the receiving plate 3 and are connected with the receiving plate 3 by a rounded transition to avoid stress concentration and cracks.

[0037] A mounting hole 6 is provided on the first connecting plate 1 near the curved surface 100 for assembly with the bucket cylinder. Specifically, the rocker arm pin is fixed by a threaded seat, and then the bucket cylinder is sleeved on the rocker arm pin. This is the prior art and will not be elaborated here.

[0038] like Figure 2 and Figure 4 As shown, the receiving plate 3 is connected to the front end of the bottom plate 4, and a front welding edge 301 is formed at the intersection, which is used to be welded to the front cover plate of the front frame. The receiving plate 3 is connected to the rear end of the bottom plate 4, and a rear fixed edge 302 is formed at the intersection, and a tilting structure with two sides of the rear fixed edge 302 tilted upward. The tilting structure includes a first tilting structure 31 and a second tilting structure 32 mirrored thereto. Since the first tilting structure 31 and the second tilting structure 32 are symmetrical structures of the same size and shape, the tilting structure is described in detail by taking the second tilting structure 32 as an example in this embodiment.

[0039] The second tilting structure 32 is a sharp angle structure, one side of which is a straight edge, which is in the same plane as the side edges of the receiving plate 3 and the bottom plate 4 and is welded to the side plate; the other side extends to the rear fixed edge 302, and the intersection with the rear fixed edge 302 does not exceed half the width of the end of the second plane 102; the sharp angle structure is also connected to the receiving plate 3 through a concave arc transition; the height of the second tilting structure 32 is not higher than the first connecting plate 1. The function of the tilting structure is to disperse the stress generated during the operation of the loader on the one hand, and to increase the welding area between the front crossbeam and the front frame on the other hand.

[0040] A cavity structure 5 is formed between the receiving plate 3 and the bottom plate 4 to reduce the weight of the front cross beam. Meanwhile, a plurality of rib plates 7 are arranged in the cavity structure 5 to improve the structural strength of the front cross beam.

[0041] In some embodiments, Figure 3 As shown, the number of ribs 7 can be three, wherein the longest rib is the first rib 701, which is perpendicular to the bottom plate 4 and arranged in the middle part of the cavity structure 5, and is parallel to the front welding edge 301, with the top end fixedly connected to the receiving plate 3, and the bottom end fixedly connected to the bottom plate 4;

[0042] The other two ribs are the second rib 702 and the third rib 703. The second rib 702 and the third rib extend from one side of the cavity structure 5 close to the front welding edge 301 and are perpendicular to the first rib 701. The second rib 702 and the third rib 703 are separated by a set distance, and both maintain a set distance from the first rib 701. The second rib 702 and the third rib are arranged in parallel and have the same shape and size. The second rib 702 corresponds to the intersection surface of the first connecting plate 1 and the receiving plate 3, and the third rib 703 corresponds to the intersection surface of the second connecting plate 2 and the receiving plate 3. The first rib 701 is connected to the receiving plate 3 and the bottom plate 4 by a rounded transition. The second rib 702 and the third rib 703 are arranged in the same way to avoid fracture due to stress concentration.

[0043] A bottom plate convex strip 41 extends from one side of the bottom plate 4 opposite to the rib plate, and the bottom plate convex strip 41 corresponds to the intersection surface of the first rib plate 701 and the bottom plate 4 across the bottom plate 4; there are two bottom plate convex strips 41, and they are on the same straight line, one end of the bottom plate convex strip 41 is aligned with the edge of the bottom plate 4, and the other end is spaced a set distance from another bottom plate convex strip 41, and the bottom plate convex strip 41 is welded and fixed to the upper hinge frame by groove welding.

[0044] The front cross beam in this embodiment is made of SCW620 through an integrated casting process, which is suitable for low-temperature environments and has no welds. Therefore, the bridge support itself has higher structural strength and better stability.

[0045] The front cross beam in this embodiment is connected and fixed to other parts of the front frame by welding. Since the front cross beam of this application is a symmetrical structure, for ease of understanding, the symmetry line between the first connecting plate 1 and the second connecting plate 2 can be used as a dividing line to divide the entire front cross beam into two halves. In this embodiment, the welding method of the part where the first connecting plate 1 is located and the front frame will be described, and the part where the second connecting plate is located is the same. The specific fixing method is as follows:

[0046] The straight sides of the pointed structure of the second tilting structure 32, the side edges of the receiving plate 3 and the bottom plate 4 are respectively compositely welded to the front frame side plates, that is, groove welding plus fillet welding; the front welding edge 301 is connected to the front cover plate by groove welding, and the bottom plate convex strip 42 is welded to the upper articulated frame by groove welding; the rear end of the front cross beam can be welded with a fixing seat for assembly with the working pipeline of the rocker arm cylinder.

[0047] Example 2

[0048] This embodiment provides a loader, which uses the front cross beam as described in Example 1 to fix the bucket cylinder and the front frame of the loader. The specific connection method is the same as that in Example 1 and will not be repeated here.

[0049] It should also be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion.

[0050] Although the specific implementation manners of the present utility model have been described above in conjunction with the accompanying drawings, they do not limit the protection scope of the present utility model. Those skilled in the art should understand that based on the technical solutions of the present utility model, various modifications or deformations that can be made by those skilled in the art without creative efforts are still within the protection scope of the present utility model.

Claims

1. A front crossbeam for a loader, characterized in that, It includes a first connecting plate and a second connecting plate symmetrically arranged therewith, and the first connecting plate and the second connecting plate are vertically fixed on the receiving plate; The front end of the receiving plate is respectively connected to the front end of the bottom plate, and the rear end of the receiving plate is connected to the rear end of the bottom plate, forming a cavity structure; Several rib plates are arranged in the cavity structure.

2. The front crossbeam for a loader according to claim 1, characterized in that, The first connecting plate and the second connecting plate are arranged in parallel.

3. The front crossbeam for a loader according to claim 1, characterized in that, The first connecting plate includes a curved surface and a first plane and a second plane connected thereto.

4. The front crossbeam for a loader according to claim 3, characterized in that, The first plane extends along the tangent direction on one side of the curved surface to the front end of the receiving plate.

5. The front crossbeam for a loader according to claim 3, characterized in that, The second plane extends along the tangent direction on the other side of the curved surface to the rear end of the receiving plate.

6. The front crossbeam for a loader according to claim 1, wherein Mounting holes are arranged at positions on the first connecting plate close to the curved surface.

7. The front crossbeam for a loader according to claim 1, characterized in that, The receiving plate is connected to the front end of the bottom plate, and a front welding edge is formed at the intersection. The receiving plate is connected to the rear end of the bottom plate, and a rear fixing edge and a warping structure in which both sides of the rear fixing edge are warped upward are formed at the intersection.

8. The front crossbeam for a loader according to claim 1, wherein, The number of rib plates is three, including a first rib plate, a second rib plate and a third rib plate.

9. The front crossbeam for a loader according to claim 7, characterized in that, Among them, the first rib plate is fixedly arranged in the middle part of the cavity structure, parallel to the front welding edge, with the top fixedly connected to the receiving plate and the bottom fixedly connected to the bottom plate.

10. A loader, characterized in that, Adopt the front crossbeam according to any one of claims 1-9.

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