Forklift truck frame

Abstract

The utility model provides a kind of fork truck frame, it includes front frame assembly, rear tail frame assembly, and front frame assembly includes bottom plate, left oil tank assembly and right oil tank assembly;Opposite first mounting plate is provided on the inner wall plate of left oil tank assembly and right oil tank assembly, first waist type hole for being connected with gearbox is provided on first mounting plate;First crossbeam is provided between the rear end of left oil tank assembly and right oil tank assembly, battery mounting rack is oppositely provided on the rear side of the upper cover plate of left oil tank assembly and right oil tank assembly;Rear tail frame assembly includes fixed plate, two support plates, and the front end of fixed plate is provided with connecting frame, second mounting plate is oppositely provided on the inner wall surface of the left and right ends of connecting frame, second waist type hole for being connected with engine is provided on second mounting plate;Support plate is provided between the left and right sides of connecting frame.The utility model can be better adapted to internal combustion fork truck power assembly and electric fork truck power assembly, to realize general purpose, also can improve installation efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of forklift manufacturing technology, and specifically relates to a forklift frame. Background Technology

[0002] Currently, the forklift manufacturing industry generally faces the problem of significantly different and incompatible chassis structures between internal combustion forklifts and electric forklifts. This is because internal combustion forklifts need to accommodate large components such as engines, transmissions, and fuel tanks, while electric forklifts are centered around motors, battery packs, and electronic control systems. This results in fundamental differences in the overall layout, stress structure, and installation interfaces of the two chassis. Furthermore, to adapt to different load capacities and stability requirements, chassis of different tonnages require a complete redesign and adjustment of the entire chassis dimensions and wheelbase. This involves a significant workload for both the design and production sides. Moreover, due to the varying chassis dimensions and the wide variety of chassis molds, production lines cannot be interchanged, resulting in poor economies of scale and significantly increased material management costs.

[0003] Therefore, how to design a forklift frame that can be well adapted to both internal combustion forklift powertrains and electric forklift powertrains to achieve universality has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this utility model is to provide a forklift frame to solve the above-mentioned technical problems in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A forklift frame includes a front frame assembly and a rear frame assembly. The front frame assembly includes a floor plate, a left fuel tank assembly disposed on the left side of the floor plate, and a right fuel tank assembly disposed on the right side of the floor plate and opposite to the left fuel tank assembly. The front ends of the left and right fuel tank assemblies are provided with opposing fan-shaped plates for mounting a drive axle and mudguards for tire protection. The upper parts of the front ends of the left and right fuel tank assemblies are connected by a front large plate. The inner walls of the left and right fuel tank assemblies are provided with opposing first mounting plates, each with a first oblong hole for connecting to a gearbox. A first crossbeam is provided between the rear ends of the left and right fuel tank assemblies. The upper covers of the left and right fuel tank assemblies are also provided. The rear side of the rear frame is provided with a battery mounting bracket for connecting to the power battery; the rear frame assembly includes a fixing plate for mounting the auxiliary counterweight and two support plates on the front and rear sides of the fixing plate. The upper ends of the two support plates are provided with arc-shaped plates extending forward and downward. The front ends of the two arc-shaped plates are respectively connected to the rear inner sides of the left and right fuel tank assemblies, and the rear ends of the two arc-shaped plates are connected by a reinforcing connecting rod; the front end of the fixing plate is provided with a connecting frame, and the left and right ends of the connecting frame are respectively connected to the inner sides of the front ends of the two arc-shaped plates; the inner walls of the left and right ends of the connecting frame are provided with second mounting plates, and the second mounting plates are provided with second oblong holes for connecting to the engine; a support plate is provided between the left and right sides of the connecting frame.

[0007] Preferably, the rear end of the fixing plate is provided with a rear panel, the left and right sides of the rear panel are respectively connected to the rear ends of the two supporting plates, and the middle part of the rear panel is open.

[0008] Preferably, a limiting plate for engaging with the steering axle is vertically provided on the bottom surface of the fixing plate, and the limiting plate extends vertically downward.

[0009] Preferably, the front plate is provided with a plurality of mounting holes for mounting valve bodies.

[0010] Preferably, both the first waist-shaped hole and the second waist-shaped hole extend in the front-back direction.

[0011] Preferably, support blocks for supporting the main counterweight are provided on the outer surfaces of the rear ends of both arc-shaped plates.

[0012] Preferably, the support block is a hollow triangular block.

[0013] Preferably, the rear end of the base plate is provided with a second crossbeam for supporting the power battery, and the left and right ends of the second crossbeam are respectively connected to the left fuel tank assembly and the right fuel tank assembly.

[0014] The beneficial effects of this utility model are as follows:

[0015] The forklift frame of this utility model can be well adapted to both internal combustion forklift powertrains and electric forklift powertrains, thus achieving universality; at the same time, the oblong holes on the first and second mounting plates facilitate the adjustment of the mounting position, improving the convenience of installation and thus effectively improving installation efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly described below, and the specific embodiments of this utility model will be further described in detail with reference to the drawings.

[0017] Figure 1 A schematic diagram of a forklift frame provided in an embodiment of this utility model;

[0018] Figure 2 A schematic diagram of the front frame assembly provided for an embodiment of this utility model;

[0019] Figure 3 A schematic diagram of the right fuel tank assembly provided for an embodiment of this utility model;

[0020] Figure 4 A schematic diagram of the first mounting plate provided in an embodiment of this utility model;

[0021] Figure 5 A schematic diagram of the base plate provided in an embodiment of this utility model;

[0022] Figure 6 This is a schematic diagram of the rear tailstock assembly provided in an embodiment of the present utility model.

[0023] Marked in the attached diagram:

[0024] 11. Left fuel tank assembly; 12. Right fuel tank assembly; 13. Base plate; 14. Second crossbeam.

[0025] 15. First crossbeam; 16. Mudguard; 17. Front panel; 18. First mounting plate.

[0026] 181. First oblong hole; 19. Storage box; 191. Fan-shaped panel.

[0027] 192. Battery mounting bracket; 193. Step on the vehicle; 194. Fuel outlet pipe;

[0028] 21. Rear tail rack assembly; 22. Tray plate; 23. Mounting plate; 24. Support plate.

[0029] 25. Curved plate; 26. Connecting bracket; 27. Reinforcing connecting rod; 28. Second mounting plate.

[0030] 29. Limiting plate; 291. Rear panel; 292. Support block. Detailed Implementation

[0031] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0032] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0033] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0034] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0035] like Figures 1 to 6As shown, this utility model embodiment provides a forklift frame, which includes a front frame assembly and a rear frame assembly 21. The front frame assembly includes a base plate 13, a left fuel tank assembly 11 disposed on the left side of the base plate, and a right fuel tank assembly 12 disposed on the right side of the base plate and opposite to the left fuel tank assembly. The front ends of the left fuel tank assembly 11 and the right fuel tank assembly 12 are provided with fan-shaped plates 191 for mounting the drive axle and mudguards 16 for protecting the tires. The upper parts of the front ends of the left fuel tank assembly and the right fuel tank assembly are connected by a front large plate 17. The inner wall panels of the left fuel tank assembly and the right fuel tank assembly are provided with first mounting plates 18 opposite to each other. The first mounting plates 18 are provided with first oblong holes 181 for connecting to the gearbox. A first crossbeam 15 is provided between the rear ends of the left fuel tank assembly and the right fuel tank assembly. A battery mounting bracket 192 for connecting to the power battery is provided opposite to the rear side of the upper cover plate of the right fuel tank assembly; the rear tail frame assembly includes a fixing plate 23 for mounting the auxiliary counterweight and two support plates 24 provided on the front and rear sides of the fixing plate. The upper ends of the two support plates are provided with arc-shaped plates 25 extending forward and downward. The front ends of the two arc-shaped plates are respectively connected to the rear inner sides of the left fuel tank assembly and the right fuel tank assembly, and the rear ends of the two arc-shaped plates are connected by a reinforcing connecting rod 27; a connecting frame 26 is provided at the front end of the fixing plate 23, and the left and right ends of the connecting frame are respectively connected to the inner sides of the front ends of the two arc-shaped plates; a second mounting plate 28 is provided opposite to the inner wall surface of the left and right ends of the connecting frame, and the second mounting plate is provided with a second waist-shaped hole for connecting to the engine; a support plate 22 is provided between the left and right sides of the connecting frame.

[0036] The forklift frame provided in this embodiment of the utility model can be well adapted to both internal combustion forklift powertrains and electric forklift powertrains, thus achieving universality; at the same time, the oblong holes on the first and second mounting plates facilitate adjustment of the installation position, improving the convenience of installation and thus effectively improving installation efficiency.

[0037] Furthermore, a rear panel 291 is provided at the rear end of the fixed plate. The left and right sides of the rear panel are respectively connected to the rear ends of the two support plates, and the middle of the rear panel is open. By adopting this design, the overall strength of the rear frame assembly can be increased by utilizing the rear panel.

[0038] Specifically, a limiting plate 29 for engaging with the steering axle is vertically arranged on the bottom surface of the fixing plate. The limiting plate 29 extends vertically downward, thereby limiting the up-and-down swing of the steering axle to prevent the steering axle from swinging too much upward or downward.

[0039] Preferably, the front plate 17 is provided with a plurality of mounting holes for installing valve bodies, thereby facilitating the installation of multiple valve bodies as required.

[0040] In one embodiment, both the first and second oblong holes extend in the front-rear direction, facilitating adjustment of the mounting position of the transmission and engine in the front-rear direction. In other embodiments, the oblong holes also extend in the vertical direction to allow for vertical adjustment of the transmission and engine during installation; alternatively, the oblong holes can be replaced with other types of holes to further improve the ease of installation by allowing for adjustment of the transmission and engine's position in both the front-rear and vertical directions.

[0041] Specifically, both the first mounting plate and the second mounting plate are rectangular plates, and each of the four corners of the rectangular plate is provided with a waist-shaped hole to ensure a reliable connection between the gearbox and the engine.

[0042] Furthermore, support blocks 292 for supporting the main counterweight are provided on the outer surfaces of the rear ends of both arc-shaped plates.

[0043] Preferably, the support block 292 is a hollow triangular block, which makes the support block stronger and can better achieve stable support for the main counterweight.

[0044] Specifically, a second crossbeam 14 for supporting the power battery is provided at the rear end of the base plate. The left and right ends of the second crossbeam 14 are connected to the left and right fuel tank assemblies, respectively. This design utilizes the first crossbeam 15, the second crossbeam 14, and the support plate 22 to provide more reliable support for the power battery. A U-shaped opening can be provided at the rear end of the base plate to reduce its weight and facilitate heat dissipation; the second crossbeam spans this U-shaped opening. Storage compartments can be provided on the outer rear sides of the left and right fuel tank assemblies for storing and installing electrical components.

[0045] When the forklift frame of this utility model is used in a fuel-powered forklift, the fuel tank in the left fuel tank assembly can be used to store fuel, the fuel tank in the right fuel tank assembly can be used to store hydraulic oil, the engine is installed between two second mounting plates, the radiator is installed between two arc-shaped plates, the gearbox is installed between two first mounting plates, and the drive axle is installed between two sector-shaped plates.

[0046] When the forklift frame of this utility model is used in an electric forklift, the oil tank in the left oil tank assembly is empty and a liquid cooling unit can be installed in the empty tank to cool the power battery. The oil tank in the right oil tank assembly can be used to store hydraulic oil. The power battery is placed on the first crossbeam, the second crossbeam and the pallet, and connected to the battery mounting bracket.

[0047] The rear tail frame assembly of this utility model is welded and fixed to the front two sides of the front frame assembly and the rear inner side of the front frame assembly to form a complete forklift frame. Since the rear tail frame assembly is an independent structural module, during the design stage, only the connection point between this module and the front frame assembly or the longitudinal dimension of the module itself needs to be changed to easily define various wheelbase models from the source without modifying the structure of the front frame assembly. This provides great convenience for the rapid development of forklift series products with different tonnages and stability requirements. The second mounting plate welded to the inner side of the rear tail frame assembly is used for the installation and fixing of the internal combustion engine. The support plate welded to its lower side is located on the same plane as the first and second crossbeams in the aforementioned front frame assembly. The three together constitute a complete power battery pack support system, ensuring that the electric forklift power battery pack is safely and stably supported in the central area of ​​the entire frame. This ensures that the forklift frame can not only accommodate the installation of the internal combustion engine but also the power battery pack of the electric forklift, such as a lithium battery pack.

[0048] This invention significantly improves versatility and reduces costs. The same basic chassis platform can cover both internal combustion and electric power forms of forklifts, greatly reducing the types of designs, molds, tooling, and parts, and realizing the intensification of R&D resources and production costs. At the same time, it can also optimize production and inventory management, transforming the production method from "multi-variety, small-batch" dedicated chassis manufacturing to "platform-based, modular" flexible production, simplifying the assembly process. Moreover, due to the modular structure, when vehicles are repaired or the power system needs to be modified (such as converting internal combustion to electric), it is easier to disassemble and replace relevant modules, reducing the difficulty and cost of later maintenance and upgrades.

[0049] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A forklift frame, characterized in that, It includes a front frame assembly and a rear frame assembly. The front frame assembly includes a base plate, a left fuel tank assembly located on the left side of the base plate, and a right fuel tank assembly located on the right side of the base plate and opposite to the left fuel tank assembly. The front ends of the left and right fuel tank assemblies are respectively provided with fan-shaped plates for mounting the drive axle and mudguards for tire protection. The upper parts of the front ends of the left and right fuel tank assemblies are connected by a front panel. The inner walls of the left and right fuel tank assemblies are respectively provided with first mounting plates, each with a first oblong hole for connecting to the transmission. A first crossbeam is provided between the rear ends of the left and right fuel tank assemblies. The rear side of the upper cover plates of the left and right fuel tank assemblies... The rear frame assembly includes a battery mounting bracket for connecting to the power battery; the rear frame assembly includes a fixing plate for mounting a secondary counterweight and two support plates on the front and rear sides of the fixing plate. Each support plate has an arc-shaped plate extending forward and downward at its upper end. The front ends of the two arc-shaped plates are connected to the rear inner sides of the left and right fuel tank assemblies, respectively, and the rear ends of the two arc-shaped plates are connected by a reinforcing connecting rod. A connecting frame is provided at the front end of the fixing plate, and the left and right ends of the connecting frame are connected to the inner sides of the front ends of the two arc-shaped plates, respectively. Second mounting plates are provided opposite each other on the inner walls of the left and right ends of the connecting frame, and the second mounting plates have second oblong holes for connecting to the engine. A support plate is provided between the left and right sides of the connecting frame.

2. The forklift frame according to claim 1, characterized in that, The rear end of the fixed plate is provided with a rear panel, and the left and right sides of the rear panel are respectively connected to the rear ends of the two support plates. The middle part of the rear panel is open.

3. The forklift frame according to claim 1, characterized in that, A limiting plate for engaging with the steering axle is vertically provided on the bottom surface of the fixing plate, and the limiting plate extends vertically downward.

4. The forklift frame according to claim 1, characterized in that, The front plate is provided with multiple mounting holes for installing valve bodies.

5. The forklift frame according to claim 1, characterized in that, Both the first waist-shaped hole and the second waist-shaped hole extend in the front-back direction.

6. The forklift frame according to claim 1, characterized in that, Support blocks for supporting the main counterweight are provided on the outer surfaces of the rear ends of both arc-shaped plates.

7. The forklift frame according to claim 6, characterized in that, The support block is a hollow triangular block.

8. The forklift frame according to any one of claims 1 to 7, characterized in that, The rear end of the base plate is provided with a second crossbeam for supporting the power battery. The left and right ends of the second crossbeam are respectively connected to the left fuel tank assembly and the right fuel tank assembly.

Images