Rear frame of electric loader and electric loader

Abstract

The utility model belongs to the technical field of electric loading machines, and particularly discloses a rear frame of an electric loading machine and the electric loading machine. The rear frame of the electric loader is applied to the electric loader, the hinged frame, the side plate and the tail plate form a box type frame structure, the supporting beam, the battery frame mounting table, the side plate, the front vertical rib and the rear vertical rib form a cavity beam structure, and the cavity beam structure and the box type frame structure are connected into a whole. After the battery frame and the battery pack are mounted on the battery frame mounting table, the weight of the battery pack can be directly transmitted to the rear axle mounting beam, so that the strength of the rear frame is enhanced, and large internal stress is prevented from being formed at weak positions of the side plates; the box-type frame structure and the cavity beam structure also increase the overall rigidity of the rear frame; in addition, the rear vertical ribs, the bottom reinforcing ribs, the tail plate, the hood mounting table and the battery frame mounting table form a square framework structure, and the overall rigidity of the rear frame is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric loaders and relates to an electric loader rear frame and an electric loader. Background Art

[0002] As an important piece of construction machinery, loaders are primarily used for operations such as shoveling and loading materials, greatly improving loading and unloading efficiency. With the rapid development of new energy construction machinery, electric loaders are gradually replacing traditional loaders and are being used in various construction fields, especially on-site construction. Electric loaders offer advantages such as low energy consumption, high environmental friendliness, low failure rate, and low maintenance costs, and have broad application prospects.

[0003] Compared to traditional fuel-powered loaders, electric loaders are powered by electricity stored in battery packs. The number of battery packs on board determines the electric loader's range. The rear frame of an electric loader is primarily a modification of the established fuel-powered loader's rear frame structure. The engine mounts are eliminated, and a platform interface for the battery frame, mounted within the battery frame, is added at the rear of the rear frame. This rear frame structure meets design requirements when the number of battery packs is small, but with a large number of battery packs, it has the following drawbacks: The high mass of the battery packs creates significant bending moments in the rear frame due to inertia, resulting in significant internal stresses in weak areas of the side panels, leading to insufficient strength. The rearward displacement of the rear frame also results in insufficient stiffness to meet design requirements. Currently, attempts to improve rear frame strength and stiffness typically involve increasing the thickness of the side panels or welding reinforcement plates to them, but these improvements are limited and cost-effective. Utility Model Content

[0004] The purpose of the utility model is to provide an electric loader rear frame and an electric loader, so as to improve the strength and rigidity of the rear frame.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0006] An electric loader rear frame comprises side panels, an articulated frame, a tail plate, front vertical ribs, rear vertical ribs, a battery frame mounting platform, a support beam and a rear axle mounting beam;

[0007] The two side panels are symmetrically arranged on the left and right sides, the front ends of the two side panels are respectively connected to the left and right ends of the hinged frame, and the rear ends of the two side panels are respectively connected to the left and right ends of the tail panel;

[0008] The front middle position of the side panel is connected to the front vertical rib, and the rear middle position of the side panel is connected to the rear vertical rib, and the front vertical rib and the rear vertical rib are both arranged in the longitudinal direction;

[0009] The upper end of the side plate is connected to the battery frame mounting platform;

[0010] The upper end of the support beam is connected to the battery frame mounting platform, the lower end of the support beam is connected to the side plate, the front end of the support beam is connected to the front vertical rib, and the rear end of the support beam is connected to the rear vertical rib;

[0011] The rear axle mounting beam is connected to the side panel;

[0012] The lower end of the support beam is connected to the rear axle mounting beam.

[0013] Preferably, the support beam is integrally formed of a vertical portion and a transverse portion, the cross section of the support beam is L-shaped, the end of the vertical portion is connected to the battery frame mounting platform, and the end of the transverse portion is connected to the side plate.

[0014] Preferably, notches are provided at the left and right ends of the rear axle mounting beam, and the lower end of the support beam is overlapped on the notches.

[0015] Preferably, a rib is connected between the edge of the battery frame mounting platform and the side plate.

[0016] Preferably, a hood mounting platform is provided at the upper end of the tail plate, and the hood mounting platform is connected to the battery frame mounting platform.

[0017] Preferably, a bottom reinforcing rib is connected between the lower end of the rear vertical rib and the tail plate.

[0018] Preferably, a plurality of assembly holes for assembling shock absorbers are provided on the edge of the battery frame mounting platform.

[0019] Preferably, the side plate is provided with an avoidance hole at a position corresponding to the assembly hole.

[0020] Preferably, a cab assembly seat is provided on the front end of the side panel and / or the articulated frame.

[0021] An electric loader is provided with the above-mentioned electric loader rear frame.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] As described above, the utility model describes a rear frame of an electric loader, which is applied to the electric loader. The articulated frame, side panels and tail panels constitute a box-type frame structure, and the support beam, battery frame mounting platform, side panels, front vertical ribs and rear vertical ribs constitute a cavity beam structure. The cavity beam structure is connected to the box-type frame structure as a whole. After the battery frame and battery pack are installed on the battery frame mounting platform, the weight of the battery pack can be directly transferred to the rear axle mounting beam to enhance the strength of the rear frame and avoid the formation of large internal stress at the weak points of the side panels; the box-type frame structure and the cavity beam structure also increase the overall stiffness of the rear frame; in addition, the rear vertical ribs, bottom reinforcement ribs, tail panel, hood mounting platform and battery frame mounting platform constitute a square skeleton structure, which further increases the overall stiffness of the rear frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0025] Figure 1 This is a perspective view of the rear frame of the electric loader according to an embodiment of the present utility model, wherein point A is a partial cross-section;

[0026] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0027] Figure 3 This is a front view of the rear frame of the electric loader according to an embodiment of the present utility model;

[0028] Figure 4 for Figure 3 Middle BB cross-section;

[0029] Figure 5 This is a three-dimensional view of the rear axle mounting beam according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0032] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] In addition, the terms "first," "second," and so on, used in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0034] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0035] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0036] Example:

[0037] like Figures 1 to 5 As shown, the rear frame of the electric loader of this embodiment includes side panels 11, an articulated frame 12, a tail plate 13, front vertical ribs 21, rear vertical ribs 22, a battery frame mounting platform 3, a support beam 4 and a rear axle mounting beam 5, etc.

[0038] The two side panels 11 are symmetrically arranged on the left and right sides, and the front ends of the two side panels 11 are respectively welded to the left and right ends of the hinge frame 12, and the rear ends of the two side panels 11 are respectively welded to the left and right ends of the tail panel 13. In this way, the hinge frame 12, the two side panels 11 and the tail panel 13 form a box-type frame structure.

[0039] A front vertical rib 21 is welded to the inner wall of the side panel 11 at the center-forward position, and a rear vertical rib 22 is welded to the inner wall of the side panel 11 at the center-rearward position. Both the front and rear vertical ribs 21 and 22 are arranged longitudinally. A battery frame mounting platform 3 is welded to the upper end of each side panel 11. The battery frame mounting platform 3 is an irregular, long strip in shape and is used to mount the battery frame and battery pack. The battery frame mounting platform 3 extends from the center of the side panel 11 to the rear end, distributing the weight of the battery pack to the center and rear of the rear frame, rather than placing the weight of the battery pack solely at the rear of the rear frame, thereby minimizing rearward displacement of the rear frame.

[0040] The support beam 4 is located on one side of the inner wall of the side panel 11. The upper end of the support beam 4 is welded to the lower surface of the battery frame mounting base 3, and the lower end of the support beam 4 is welded to the inner wall of the side panel 11. The front end of the support beam 4 is welded to the front vertical rib 21, and the rear end of the support beam 4 is welded to the rear vertical rib 22. In this way, the support beam 4, battery frame mounting base 3, side panel 11, front vertical rib 21 and rear vertical rib 22 form a cavity beam structure.

[0041] Among them, the support beam 4 is integrally formed by a vertical portion 41 and a horizontal portion 42. The cross-section of the support beam 4 is L-shaped. The end of the vertical portion 41 is welded to the lower surface of the battery frame mounting platform 3, and the end of the horizontal portion 42 is welded to the side plate 11.

[0042] The rear axle mounting beam 5 is welded to the left and right side panels 11 respectively, and the lower end of the support beam 4 is welded to the rear axle mounting beam 5 .

[0043] Among them, notches 51 are opened at the left and right ends of the rear axle mounting beam 5, and the outer contour of the notch 51 matches the outer contour shape of the lower end of the support beam 4. The lower end of the support beam 4 is overlapped on the notch 51, so that the rear axle mounting beam 5 can achieve stable support for the support beam 4.

[0044] A rib plate 6 is welded between the edge of the battery frame mounting platform 3 and the side plate 11 , and the rib plate 6 increases the strength of the side plate 11 in supporting the battery frame mounting platform 3 .

[0045] A hood mounting platform 7 is mounted on the upper end of the tailgate 13, to which the battery frame mounting platform 3 is welded. This platform 7 connects the tailgate 13 and battery frame mounting platform 3 into a single structure, enhancing the overall strength of the rear frame and the rigidity of the rear section. Furthermore, a bottom reinforcing rib 8 is welded between the lower end of the rear rib 22 and the lower end of the tailgate 13. This creates a rectangular frame structure, further enhancing the rigidity of the rear frame.

[0046] The battery frame mounting platform 3 has several mounting holes 31 along its edge for mounting the shock absorbers. The side panels 11 have corresponding clearance holes 111 to facilitate assembly and prevent interference between the shock absorbers and the side panels 11. Dust covers are installed inside some of these clearance holes 111 to prevent dust, mud, and water from entering the rear frame.

[0047] A cab assembly seat 9 is provided on the front end of the side panel 11 and the articulated frame 12 so that the cab can be assembled through the cab assembly seat 9 .

[0048] An electric loader is provided with the electric loader rear frame described above in this embodiment.

[0049] So far, this embodiment has been described in detail with reference to the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the electric loader rear frame and electric loader of the present invention. The electric loader rear frame of the present invention is applied to the electric loader. The articulated frame 12, side panels 11 and tail panels 13 form a box-type frame structure. The support beam 4, battery frame mounting platform 3, side panels 11, front vertical ribs 21 and rear vertical ribs 22 form a cavity beam structure. The cavity beam structure is connected to the box-type frame structure as a whole. After the battery frame and battery pack are installed on the battery frame mounting platform 3, the weight of the battery pack can be directly transferred to the rear axle mounting beam 5 to enhance the strength of the rear frame and avoid the formation of large internal stress in the weak parts of the side panels 11. The box-type frame structure and the cavity beam structure also increase the overall rigidity of the rear frame. In addition, the rear vertical ribs 22, bottom reinforcement ribs 8, tail panels 13, hood mounting platform 7 and battery frame mounting platform 3 form a square frame structure, which further increases the overall rigidity of the rear frame.

[0050] Of course, the above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention and should be protected by the present invention.

Claims

1. An electric loader rear frame, characterized in that: Includes side panels, articulated frames, tail panels, front ribs, rear ribs, battery frame mounting platform, support beams, and rear axle mounting beams; The two side panels are symmetrically arranged on the left and right sides, the front ends of the two side panels are respectively connected to the left and right ends of the hinged frame, and the rear ends of the two side panels are respectively connected to the left and right ends of the tail panel; The front middle position of the side panel is connected to the front vertical rib, and the rear middle position of the side panel is connected to the rear vertical rib, and the front vertical rib and the rear vertical rib are both arranged in the longitudinal direction; The upper end of the side plate is connected to the battery frame mounting platform; The upper end of the support beam is connected to the battery frame mounting platform, the lower end of the support beam is connected to the side plate, the front end of the support beam is connected to the front vertical rib, and the rear end of the support beam is connected to the rear vertical rib; The rear axle mounting beam is connected to the side panel; The lower end of the support beam is connected to the rear axle mounting beam.

2. The rear frame of the electric loader according to claim 1, characterized in that: The support beam is integrally formed of a vertical portion and a horizontal portion. The cross section of the support beam is L-shaped. The end of the vertical portion is connected to the battery frame mounting platform, and the end of the horizontal portion is connected to the side plate.

3. The rear frame of the electric loader according to claim 1, characterized in that: Notches are provided at the left and right ends of the rear axle mounting beam, and the lower end of the support beam is overlapped on the notches.

4. The rear frame of the electric loader according to claim 1, characterized in that: A rib plate is connected between the edge of the battery frame mounting platform and the side plate.

5. The rear frame of the electric loader according to claim 1, characterized in that: A hood mounting platform is provided at the upper end of the tail plate, and the hood mounting platform is connected to the battery frame mounting platform.

6. The rear frame of the electric loader according to claim 1 or 5, characterized in that: A bottom reinforcing rib is connected between the lower end of the rear vertical rib and the tail plate.

7. The rear frame of the electric loader according to claim 1, characterized in that: The edge of the battery frame mounting platform is provided with a plurality of mounting holes for mounting shock absorbers.

8. The rear frame of the electric loader according to claim 7, characterized in that: The side plate is provided with an avoidance hole at a position corresponding to the assembly hole.

9. The rear frame of the electric loader according to claim 1, characterized in that: A cab assembly seat is provided on the front end of the side panel and / or the articulated frame.

10. An electric loader, characterized in that: The electric loader is provided with the electric loader rear frame according to any one of claims 1 to 9.

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