Rear frame of electric loader

Abstract

The utility model discloses a rear frame of an electric loader, which comprises two side plate assemblies arranged at intervals, the front ends of the two side plate assemblies are connected through a hinge seat component, and the rear ends of the two side plate assemblies are connected through a rear coaming; the battery rack mounting seat is used for bearing a battery pack group, the battery rack mounting seat is fixed at the top of the side plate assembly, and the rear box body assembly is fixed at the rear end of the side plate assembly. And the installation space of the battery pack group on the electric loader is expanded. The space on the rear frame is fully utilized to install the battery pack group, so that the endurance time of the electric loader can be prolonged, and meanwhile, the influence of battery pack accumulation on the driving view is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of loaders, in particular to a rear frame of an electric loader. Background Art

[0002] As a type of earthmoving machinery, loaders are widely used in construction, mining, road construction, livestock farming, and other fields. They primarily handle the loading and transport of bulk materials such as sand, coal, and forage. By changing the working tools, they can also perform bulldozing, dumping, lifting, and stacking operations. Due to their fast response time, high efficiency, excellent maneuverability, and ease of operation, they have become one of the key types of earthmoving machinery in engineering construction. With the rapid development of the electric vehicle industry, a trend towards electrification has emerged in the construction machinery sector, with both electric-powered and fully electric construction machinery now appearing on the market. Electric loaders have emerged as a result, and sales have soared in recent years. Due to their low maintenance costs and proven technology, they have taken a leading position in the industry.

[0003] Currently, electric loaders in the industry generally suffer from low battery life due to the small number of battery packs they carry. However, simply stacking battery packs on top of the existing frame to extend the battery life of electric loaders will cause obstructed driving vision. The battery life and operating visibility of the entire machine have always been difficult issues in the research and development of the electric loader industry. As the main load-bearing and mounting structure of the entire machine, the structural layout of the rear frame has a significant impact on the overall performance of the machine. Therefore, the rear frame of the loader must meet the rigidity requirements while considering the reasonable installation layout of the battery pack frame, drive components, hydraulic components, electrical components and cover parts. Utility Model Content

[0004] In order to solve the problems in the above-mentioned prior art, the utility model provides a rear frame of an electric loader, including two side panel assemblies arranged at intervals, the front ends of the two side panel assemblies are connected by a hinged seat assembly, and the rear ends are connected by a rear panel; it also includes a battery rack mounting seat and a rear box assembly for carrying a battery pack group, the battery rack mounting seat is fixed to the top of the side panel assembly, and the rear box assembly is fixed to the rear end of the side panel assembly.

[0005] Furthermore, there are a plurality of battery rack mounting seats, which are symmetrically fixed on the two side panel assemblies, and the battery rack mounting seats are distributed in a stepped manner on the side panel assembly on one side.

[0006] Furthermore, it also includes a hydraulic motor mounting seat and a travel motor mounting seat symmetrically fixed on the inner sides of the two side plate assemblies, and the hydraulic motor mounting seat and the travel motor mounting seat are staggered and arranged on the side plate assembly on one side.

[0007] Furthermore, the side panel assembly is an I-beam structure, including a side panel body, the top of the side panel body is a stepped transition structure, connected to a mounting bent plate matching its contour, and the bottom of the side panel body is provided with an inverted U-shaped opening, connected to a bridge mounting plate I, a lower bent plate and a bridge mounting plate II matching its contour.

[0008] Furthermore, a reinforcing rib plate is provided between the two side panel assemblies, and both ends of the reinforcing rib plate are fixedly connected to the two side panel bodies respectively.

[0009] Furthermore, the front end of the side panel body is provided with an L-shaped opening for mounting and cooperating with the hinge seat assembly, and the rear end is provided with a groove for cooperating with the rear panel.

[0010] Furthermore, the rear box assembly includes a battery rack mounting plate located at the top of the rear box assembly and a battery rack mounting support plate I and a battery rack mounting support plate II located at the bottom of the rear box assembly.

[0011] Furthermore, the battery rack mounting plate is provided with a battery rack mounting hole and a radiator fixing hole.

[0012] Furthermore, the rear box assembly also includes lifting ears and anti-collision beam fixing plates, the lifting ears are fixed on both sides of the front end of the battery rack mounting plate, and the anti-collision beam fixing plates are fixed on both sides of the rear end of the battery rack mounting plate and are flush with the rear end surface of the battery rack mounting plate.

[0013] Furthermore, the articulated seat assembly includes an upper articulated seat connected to the upper front end of the side panel assembly and a lower articulated seat connected to the lower front end of the side panel assembly, and a cab fixing support seat is provided on the top of the upper articulated seat.

[0014] Compared with the prior art, the electric loader rear frame of the present invention has the following advantages:

[0015] The utility model can accommodate battery packs on the top of the battery rack mounting base on the rear frame of the electric loader, on the top of the rear box assembly, and inside the rear box assembly, expanding the installation space for battery packs on the electric loader. By fully utilizing the space on the rear frame to install battery packs, the electric loader's battery life can be increased while preventing battery pack accumulation from affecting the driver's vision.

[0016] The drive motor support seat and the hydraulic motor support seat of the rear frame of the electric loader of the utility model adopt a symmetrical structural arrangement and are staggered and fixed inside the two side plate assemblies. The arrangement is reasonable and the space is properly used. The side plate structure adopts a stepped transition to avoid the risk of stress concentration and ensure the overall rigidity of the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a schematic structural diagram of the rear frame of the electric loader of the present utility model;

[0018] Figure 2 This is a schematic structural diagram of the side panel assembly of the present invention;

[0019] Figure 3 This is a schematic structural diagram of the tailgate assembly of the present invention;

[0020] Figure 4 This is a bottom view of the tailgate assembly of the present invention;

[0021] In the figure: 1. Side panel assembly; 11. Side panel body; 12. Mounting bend plate; 13. Bridge mounting plate I; 14. Lower bend plate; 15. Bridge mounting plate II; 2. Articulated seat assembly; 21. Upper articulated seat; 22. Lower articulated seat; 3. Cab fixed support seat; 4. Battery rack mounting seat; 5. Reinforcement rib plate; 6. Rear box assembly; 61. Battery rack mounting plate; 62. Lifting ear; 63. Battery rack mounting support plate I; 64. Anti-collision beam fixing plate; 65. Battery rack mounting support plate II; 7. Hydraulic motor mounting seat; 8. Travel motor mounting seat; 9. Tail plate. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and 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 orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0024] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0025] like Figure 1As shown, the present invention discloses a rear frame for an electric loader. The rear frame includes two side panel assemblies 1 symmetrically spaced apart on the left and right sides of the rear frame. The two side panel assemblies 1 are welded together at the front end by a hinge assembly 2 and welded together at the rear end by a tail plate 9. The two side panel assemblies 1, the hinge assembly 2, and the tail plate 9 together form a box-shaped structure. The hinge assembly 2 includes an upper hinge seat 21 connected to the upper front end of the side panel assembly 1 and a lower hinge seat 22 connected to the lower front end of the side panel assembly 1. A cab fixing support 3 is located on the top of the upper hinge seat 21. The rear frame also includes a battery rack mounting base 4 for carrying a battery pack and a rear box assembly 6. The battery rack mounting base 4 is welded to the top of the side panel assembly 1, and the rear box assembly 6 is welded to the rear end of the side panel assembly 1. In this embodiment, the top of the battery rack mounting base 4, the top of the rear box assembly 6, and the interior of the rear box assembly 6 can all accommodate battery packs, expanding the installation space for battery packs on the electric loader. Making full use of the space on the rear frame to install battery packs can increase the endurance of the electric loader while avoiding the impact of battery pack accumulation on driving vision.

[0026] In some embodiments, the rear frame of the electric loader further includes two hydraulic motor mounts 7 and two travel motor mounts 8 , wherein the two hydraulic motor mounts 7 and the two travel motor mounts 8 are symmetrically fixed to the inner sides of the two side plate assemblies 1, and the hydraulic motor mounts 7 and the travel motor mounts 8 are staggered on a single side of the side plate assembly 1. The staggered arrangement of the hydraulic motor mounts 7 and the travel motor mounts 8 makes the rear frame of the electric loader compact and more efficient in space utilization.

[0027] In some embodiments, as Figure 2 As shown, the side panel assembly 1 is an I-beam structure, including a side panel body 11. The top of the side panel body 11 is a stepped transition structure. The height of the side panel body 11 decreases from front to back, and the stepped planes are connected by sloped transition surfaces. The top of the side panel body 11 is connected to a mounting bent plate 12 that matches its profile. The bottom of the side panel body 11 is provided with an inverted U-shaped opening. The bottom of the side panel body 11 is connected to a bridge mounting plate I13, a lower bent plate 14 and a bridge mounting plate II15 that match its profile. The stepped transition structure at the top of the side panel body 11 ensures the smooth transition between the front and rear ends of the side panel body 11, avoids right-angle transitions, and avoids cliff-like changes in cross-sectional transitions, thereby avoiding the risk of stress concentration. The mounting bent plate 12 that matches the shape of the top of the side panel body 11 adopts a large bending radius and is assembled and welded into an I-beam structure, which can effectively ensure the structural strength of the weak bending points and the overall structural strength of the rear frame.

[0028] In some embodiments, there are four battery rack mounts 4, symmetrically arranged on the two side panel assemblies 1. On a single side panel assembly 1, two battery rack mounts 4 are arranged in a stepped pattern. The bottom of the battery rack mounts 4 is welded to the sloped surface at the top of the side panel assembly 1. The top is machined to ensure installation flatness. Battery rack mounting holes are provided on the top of the mounts, which are machined after welding to ensure accurate assembly between the various structures.

[0029] Furthermore, a reinforcing rib 5 is provided between the two side panel assemblies 1, and the two ends of the reinforcing rib 5 are respectively welded and fixedly connected to the two side panel bodies 11. The front end of the side panel body 11 is provided with an L-shaped opening for mounting with the upper hinge seat 21, and the rear end is provided with a groove for matching with the C-shaped tail plate 9; the upper hinge seat 21 and the tail plate 9 are respectively welded and fixed at the L-shaped opening and the groove of the side panel body 11. The front end of the rear box assembly 6 is respectively welded and fixedly connected to the tail plate 9 and the upper and lower parts of the groove of the side panel body 11; at the same time, the top of the front end of the rear box assembly 6 extends toward the side panel body 11 to form an extension, and the extension of the rear box assembly 6 is welded and fixedly connected to the top of the rear end of the side panel body 11. The L-shaped opening and groove structure of the side panel body 11, as well as the extension of the rear box assembly 6, increase the connection area between the various components, thereby increasing the structural strength of the rear frame of the electric loader.

[0030] In some embodiments, as Figure 3 、 Figure 4 As shown, the rear box assembly 6 includes a battery rack mounting plate 61 located at the top of the rear box assembly 6, and battery rack mounting support plates I 63 and II 65 located at the bottom of the rear box assembly 6. The battery rack mounting plate 61 is used to support the battery rack and radiator, and is provided with battery rack mounting holes and radiator fixing holes.

[0031] Furthermore, the rear box assembly 6 also includes lifting lugs 62 and an anti-collision beam fixing plate 64. The lifting lugs 62 are fixed to both sides of the front end of the battery rack mounting plate 61, and the electric loader can be lifted through the lifting lugs 62. The anti-collision beam fixing plate 64 is fixed to both sides of the rear end of the battery rack mounting plate 61 and is flush with the rear end surface of the battery rack mounting plate 61.

[0032] It is understood that what is described in the detailed description is merely one embodiment of the present invention, and that those skilled in the art may 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 guidance of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. An electric loader rear frame, characterized in that: The vehicle comprises two side panel assemblies (1) spaced apart from each other, wherein the front ends of the two side panel assemblies (1) are connected via a hinged seat assembly (2) and the rear ends are connected via a tail plate (9); the rear frame further comprises a battery rack mounting seat (4) for carrying a battery pack and a rear box assembly (6), wherein the battery rack mounting seat (4) is fixed to the top of the side panel assembly (1), and the rear box assembly (6) is fixed to the rear end of the side panel assembly (1).

2. The rear frame of the electric loader according to claim 1, characterized in that: There are a plurality of battery rack mounting seats (4), which are symmetrically fixed on the two side panel assemblies (1), and the battery rack mounting seats (4) are arranged in a stepped distribution on the side panel assembly (1) on one side.

3. The rear frame of the electric loader according to claim 1, characterized in that: It also includes a hydraulic motor mounting seat (7) and a travel motor mounting seat (8) respectively symmetrically fixed on the inner sides of the two side plate assemblies (1), and the hydraulic motor mounting seat (7) and the travel motor mounting seat (8) are staggered and arranged on the side plate assembly (1) on one side.

4. The rear frame of the electric loader according to claim 1, characterized in that: The side panel assembly (1) is an I-beam structure, comprising a side panel body (11), the top of the side panel body (11) being a stepped transition structure, connected to a mounting bent plate (12) matching its profile, and the bottom of the side panel body (11) being provided with an inverted U-shaped opening, connected to a bridge mounting plate I (13), a lower bent plate (14) and a bridge mounting plate II (15) matching its profile.

5. The rear frame of the electric loader according to claim 4, characterized in that: A reinforcing rib plate (5) is provided between the two side panel assemblies (1), and both ends of the reinforcing rib plate (5) are fixedly connected to the two side panel bodies (11) respectively.

6. The rear frame of the electric loader according to claim 4, characterized in that: The front end of the side plate body (11) is provided with an L-shaped opening for mounting and cooperating with the hinge seat assembly (2), and the rear end is provided with a groove for cooperating with the tail plate (9).

7. The rear frame of an electric loader according to claim 1, characterized in that: The rear box assembly (6) includes a battery rack mounting plate (61) located at the top of the rear box assembly (6) and a battery rack mounting support plate I (63) and a battery rack mounting support plate II (65) located at the bottom of the rear box assembly (6).

8. The rear frame of the electric loader according to claim 7, characterized in that: The battery rack mounting plate (61) is provided with a battery rack mounting hole and a radiator fixing hole.

9. The rear frame of the electric loader according to claim 7, characterized in that: The rear box assembly (6) further includes a lifting lug (62) and an anti-collision beam fixing plate (64), wherein the lifting lug (62) is fixed to both sides of the front end of the battery rack mounting plate (61), and the anti-collision beam fixing plate (64) is fixed to both sides of the rear end of the battery rack mounting plate (61) and is flush with the rear end surface of the battery rack mounting plate (61).

10. The rear frame of the electric loader according to claim 1, characterized in that: The articulated seat assembly (2) comprises an upper articulated seat (21) connected to the upper front end of the side panel assembly (1) and a lower articulated seat (22) connected to the lower front end of the side panel assembly (1). A cab fixing support seat (3) is provided on the top of the upper articulated seat (21).

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