An unmanned electric fork truck

Abstract

The application discloses an unmanned electric forklift, which comprises a frame mechanism and a vehicle body of an assembly, the vehicle body is provided with a driver's cabin and a fork mechanism, the top of the frame mechanism is provided with a first mounting area, the first mounting area comprises a first mounting position and a second mounting position which are separated, the unmanned electric forklift further comprises an electrical cabinet and a battery pack, the electrical cabinet and the battery pack are interchangeably accommodated in the first mounting position and the second mounting position, a wire passing channel which is communicated with the first mounting area is arranged in the frame mechanism, and the wire harness led out of the electrical cabinet is arranged along the wire passing channel. The application can realize the built-in hidden setting of functional accessories such as the electrical cabinet and the battery pack, can realize the protection functions such as dustproof and waterproof, can reduce the mutual influence of heat generated in the working process by forming the isolated storage between the functional accessories, and can improve the safety of the whole vehicle operation by arranging the wire passing channel to arrange the wire harness and prevent the line of the unmanned functional block from being exposed.

Description

Technical Field

[0001] This invention relates to the field of forklift equipment, and more specifically to an unmanned electric forklift. Background Technology

[0002] The working environment of driverless electric forklifts is relatively harsher than that of manually driven forklifts. The driverless function blocks of driverless electric forklifts are all precision electrical components. In order to ensure the long-term stable operation of driverless electric forklifts, the requirements for waterproofing, electromagnetic interference prevention, heat dissipation and other aspects of the electrical components of driverless electric forklifts are much higher than those of manually driven forklifts.

[0003] Most existing driverless electric forklifts are modified or redesigned from manually driven forklifts. They typically use a method of installing driverless electrical cabinets on the top or rear of the manually driven forklift. On the one hand, this results in a bulky overall layout, which is not conducive to the long-term development of driverless electric forklifts. On the other hand, the electrical cabinets are exposed, resulting in poor waterproofing, and the wiring of the driverless function blocks is exposed, which can easily have an adverse impact on the stability and safety of the entire vehicle's operation. Summary of the Invention

[0004] To address the technical problems of exposed electrical cabinets and exposed wiring harnesses in unmanned driving function blocks during forklift retrofitting in existing technologies, which lead to poor overall vehicle protection and low safety, this invention provides an unmanned electric forklift that improves the layout of the electrical cabinets and the arrangement of related wiring lines, thereby enhancing the overall vehicle protection function and optimizing the reliability and safety of the vehicle's operation.

[0005] This invention discloses an unmanned electric forklift, including a frame assembly and a body. The body is provided with a driver's cab and a fork mechanism. The top of the frame assembly is provided with a first mounting area, which includes a first mounting position and a second mounting position that are isolated from each other. The unmanned electric forklift also includes an electrical cabinet and a battery pack. The electrical cabinet and the battery pack are interchangeably accommodated in the first mounting position and the second mounting position. The frame assembly is provided with a wiring channel communicating with the first mounting area, and the wire harnesses led out from the electrical cabinet are arranged along the wiring channel.

[0006] The driverless electric forklift of the present invention also has the following additional technical features:

[0007] The chassis mechanism also includes a second mounting area located below the first mounting area. The driverless electric forklift also includes a power mechanism, which includes a pump motor, a hydraulic pump, and a hydraulic oil tank. The hydraulic oil tank is installed in the second mounting area. The hydraulic oil tank and the hydraulic pump are connected by hydraulic pipelines. The chassis mechanism has pipeline channels for arranging the hydraulic pipelines.

[0008] The cable passage and the pipeline passage are respectively located on opposite sides of the frame mechanism.

[0009] An intermediate horizontal plate is provided between the first installation area and the second installation area to separate the two.

[0010] The bottom of the second installation area is provided with an installation port, through which the hydraulic oil tank enters and exits the second installation area. The hydraulic oil tank is provided with a filling port, which is exposed in the second installation area.

[0011] The bottom of the hydraulic oil tank is provided with an outwardly extending mounting part, the mounting part is provided with a mounting hole, and the bottom surface of the frame mechanism is provided with a mating hole. Fasteners are inserted into the mounting hole and the mating hole in sequence to fix the hydraulic oil tank to the frame mechanism.

[0012] The first mounting area also includes a third mounting position that is isolated from both the first mounting position and the second mounting position.

[0013] The first mounting position is located near the rear end of the vehicle frame mechanism. The electrical cabinet is housed in the first mounting position. The second mounting position and the third mounting position are both located in front of the first mounting position and arranged side by side. The battery pack is housed in the second mounting position. The pump motor and the hydraulic pump are housed in the third mounting position.

[0014] The electrical cabinet is provided with a top cover to enclose the electrical cabinet, and the driverless electric forklift includes an outer cover placed on top of the first installation area, the outer cover covering the first installation position and the second installation position.

[0015] The two ends of the middle horizontal plate have downward folded edges respectively. The frame mechanism includes a first side plate and a second side plate respectively disposed on the outer sides of the two ends of the middle horizontal plate. A first channel is formed between one of the downward folded edges and the first side plate, and / or a second channel is formed between one of the downward folded edges and the second side plate.

[0016] By adopting the above technical solution, the present invention has the following beneficial effects:

[0017] 1. The unmanned electric forklift of the present invention, by setting a first mounting area in the frame mechanism, can realize the built-in hidden setting of functional components such as electrical cabinets and battery packs, and can achieve dustproof and waterproof protection functions. Furthermore, by setting isolated first and second mounting positions, functional components can be isolated and stored together, which can reduce the mutual influence of heat generated during operation, so that the electrical cabinet and battery pack can maintain good working performance. In addition, by setting a wiring channel, it can be used to arrange wire harnesses, preventing the wiring of unmanned functional blocks from being exposed, reducing the impact of the external environment on the wiring, ensuring the normal use of electrical components, and thus improving the safety of the entire vehicle operation.

[0018] In addition, placing the electrical cabinet on top of the chassis mechanism facilitates inspection and maintenance by technicians and provides operational convenience.

[0019] 2. In a preferred embodiment, the chassis mechanism further includes a second mounting area located below the first mounting area. The unmanned electric forklift also includes a power mechanism comprising a pump motor, a hydraulic pump, and a hydraulic oil tank. The hydraulic oil tank is installed in the second mounting area, and the hydraulic oil tank and the hydraulic pump are connected via hydraulic pipelines. The chassis mechanism has pipeline channels for arranging the hydraulic pipelines. Thus, by rationally planning the space of the chassis mechanism to form multiple mounting areas, different functional components can be installed in isolation. While improving space utilization, this reduces heat transfer and electromagnetic interference between functional components, optimizing the use and lifespan of each component. Placing the hydraulic oil tank in a lower position on the chassis mechanism, away from the electrical cabinet above, improves safety. Furthermore, the hydraulic oil tank can form a counterweight structure to enhance the stability of the entire chassis, which is beneficial for improving the overall vehicle's operational stability.

[0020] In a preferred embodiment of this method, the wiring channel and the pipeline channel are respectively located on opposite sides of the frame mechanism; thereby, the wiring harness and hydraulic pipeline can be completely isolated, forming a safe isolation distance, which can prevent safety accidents such as short circuits caused by leakage in the hydraulic pipeline, thus ensuring the safety of the forklift.

[0021] 3. In a preferred embodiment, an intermediate horizontal plate is provided between the first installation area and the second installation area to isolate them; by setting the intermediate horizontal plate, physical isolation can be formed, which helps to reduce the mutual influence of heat transfer, electromagnetic interference and other factors between the two installation areas, thereby ensuring the performance and life of each functional component.

[0022] 4. In a preferred embodiment, the bottom of the second mounting area is provided with a mounting port, through which the hydraulic oil tank enters and exits the second mounting area. The hydraulic oil tank is provided with a filling port, which is exposed in the second mounting area. Thus, by placing the hydraulic oil tank at the bottom of the frame mechanism, and since the filling port is exposed, it is convenient for workers to add oil, making the operation convenient. Furthermore, in the event of an oil leak, the leaked oil is more easily discharged to the outside of the forklift without contaminating other structures or accessories inside the forklift, which helps protect the operating environment inside the forklift and reduces the amount of manual cleaning required.

[0023] Furthermore, the bottom of the hydraulic oil tank is provided with an outwardly extending mounting part, the mounting part is provided with a mounting hole, and the bottom surface of the frame mechanism is provided with a mating hole. Fasteners are sequentially inserted into the mounting hole and the mating hole to fix the hydraulic oil tank to the frame mechanism. Thus, the hydraulic oil tank is installed from the bottom of the frame mechanism, there is no assembly interference, and there is sufficient installation space, which is convenient for implementation. Moreover, the use of fasteners to fix the hydraulic oil tank ensures the installation is firm and is beneficial to driving stability.

[0024] 5. In a preferred embodiment, the first mounting area further includes a third mounting position that is isolated from both the first and second mounting positions; thereby, by increasing the number of mounting positions, more functional accessories can be installed, the space utilization of the frame mechanism can be optimized to a greater extent, and a compact layout can be achieved.

[0025] Furthermore, the first mounting position is located near the rear end of the frame mechanism, the electrical cabinet is housed in the first mounting position, the second mounting position and the third mounting position are both located in front of the first mounting position and arranged side by side, the battery pack is housed in the second mounting position, and the pump motor and hydraulic pump are housed in the third mounting position. Thus, by adopting this layout, while ensuring that each functional component is isolated from each other and safe to use, the weight distribution can be optimized, making the load distribution in the first mounting area uniform, and ensuring a certain load in the second mounting area to lower the center of gravity distribution. This is beneficial to improving the overall vehicle running stability and avoiding the serious local vibration that can easily occur when the load distribution is uneven, thus affecting the smooth operation of the forklift.

[0026] 6. In a preferred embodiment, the electrical cabinet is provided with a top cover to enclose the electrical cabinet, and the unmanned electric forklift includes an outer cover placed on top of the first installation area, the outer cover covering the first installation position and the second installation position; thereby, the top cover forms a first layer of protection for the electrical cabinet, which can effectively prevent dust and water ingress to ensure the safety of the electrical cabinet in use; the outer cover forms a second layer of protection for the electrical cabinet, which can enhance the protection effect and also increase the protection of accessories such as battery packs; and when the electrical cabinet needs to be inspected, the outer cover and the top cover can be opened, which is convenient to operate.

[0027] 7. In a preferred embodiment, the two ends of the intermediate horizontal plate each extend downward with a folded edge. The frame mechanism includes a first side plate and a second side plate respectively disposed on the outer sides of the two ends of the intermediate horizontal plate. A first channel is formed between one of the folded edges and the first side plate, and / or a second channel is formed between one of the folded edges and the second side plate. Thus, the first and second channels can be formed by utilizing the structure / shape of the frame mechanism itself to serve as cable passages or pipe passages, avoiding the need to specially set up slots or other structures as cable passages and / or pipe passages. This simplifies the frame mechanism structure and promotes the miniaturization and compactness of the frame mechanism, thereby promoting the miniaturization of forklifts. Attached Figure Description

[0028] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0029] Figure 1 This is a schematic diagram of the frame mechanism according to one embodiment of this application.

[0030] Figure 2 This is a schematic diagram showing the arrangement of multiple functional components according to one embodiment of this application.

[0031] Figure 3 This is a schematic diagram of the wire harness arrangement according to one embodiment of this application.

[0032] Figure 4 This is a schematic diagram of a partial composition of the frame mechanism according to one embodiment of this application.

[0033] Figure 5 This is a schematic diagram of the arrangement of the hydraulic oil tank according to one embodiment of this application.

[0034] Figure 6 for Figure 5 A schematic diagram of the hydraulic oil tank from another perspective.

[0035] Figure label:

[0036] 100. Chassis mechanism; 10. First mounting area; 101. First mounting position; 102. Second mounting position; 103. Third mounting position; 11. Wiring passage; 12. Second mounting area; 13. Pipe passage; 121. Mounting port; 14. Middle horizontal plate; 141. Lower folded edge; 15. First side plate; 16. Second side plate; 151. First folded edge; 161. Second folded edge; 171. Front upright plate; 172. Middle upright plate; 173. Rear upright plate; 174. Side upright plate; 175. Clearance opening; 20. Electrical cabinet; 21. Battery pack; 22. Pump motor; 23. Hydraulic oil tank; 24. Wiring harness; 25. Hydraulic pipeline; 231. Filling port; 232. Mounting part; 233. Mounting hole; 201. Top cover. Detailed Implementation

[0037] To more clearly illustrate the overall concept of the present invention, a detailed description will be provided below with reference to the accompanying drawings and examples.

[0038] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0039] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0040] Furthermore, in the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two connected entities do not establish a connection relationship through a transitional structure, but are connected solely by a connecting structure to form a whole. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0043] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] like Figures 1 to 6 As shown, this application provides an unmanned electric forklift, including a frame mechanism 100 and a vehicle body. The vehicle body is provided with a driver's cab and a fork mechanism. The top of the frame mechanism 100 is provided with a first mounting area 10. The first mounting area 10 includes a first mounting position 101 and a second mounting position 102 that are isolated from each other. The unmanned electric forklift also includes an electrical cabinet 20 and a battery pack 21. The electrical cabinet 20 and the battery pack 21 are interchangeably accommodated in the first mounting position 101 and the second mounting position 102. The frame mechanism 100 is provided with a wiring channel 11 that communicates with the first mounting area 10. The wire harness 24 led out from the electrical cabinet 20 is arranged along the wiring channel 11.

[0045] This application integrates the unmanned electrical cabinet 20 and the manually driven vehicle body into a unified design, with a reasonable layout that improves the overall appearance of the vehicle while further ensuring the stability and safety of its operation. For example, the frame mechanism 100 is located below the cab, and the fork mechanism is located at the front of the frame mechanism 100. While retaining the manual driving function, the addition of unmanned driving function blocks (sensors, radar, navigation equipment, etc.) and the electrical cabinet 20 enables unmanned driving, expanding the forklift's application scenarios, facilitating its operation in harsher environments, and extending its working time.

[0046] Specifically, the top of the frame mechanism 100 is provided with a first mounting area 10, where functional components such as the electrical cabinet 20 and battery pack 21 can be installed from top to bottom, facilitating the maintenance of the electrical cabinet 20. Further subdividing the first mounting area 10 into multiple mounting positions allows for the isolated storage of multiple functional components. The specific distribution and relative positional relationship of the first mounting position 101 and the second mounting position 102 are not limited in this application; for example, such as... Figure 1 As shown, the first mounting position 101 is located near the rear end of the frame mechanism 100, and the second mounting position 102 is located in front of the first mounting position 101. Furthermore, the wiring channel 11 is located, for example, on the side of the first mounting area 10, so that the wiring harness 24 led out from the electrical cabinet 20 can be electrically connected to the autonomous driving function block at a certain position. At the same time, the wiring channel 11 can hide the wiring harness 24, thereby reducing the probability of safety accidents.

[0047] As a preferred embodiment of this application, the frame mechanism 100 is further provided with a second mounting area 12, which is located below the first mounting area 10. The driverless electric forklift also includes a power mechanism, which includes a pump motor 22, a hydraulic pump, and a hydraulic oil tank 23. The hydraulic oil tank 23 is installed in the second mounting area 12. The hydraulic oil tank 23 and the hydraulic pump are connected through a hydraulic pipeline 25. The frame mechanism 100 is provided with a pipeline channel 13 for arranging the hydraulic pipeline 25.

[0048] like Figures 4 to 6 As shown, the second mounting area 12 is located at the bottom of the frame mechanism 100. By accommodating some functional components in the second mounting area 12, the length or width of the frame mechanism 100 can be reduced compared to setting only a single-layer mounting area, which is beneficial for the miniaturization of the forklift. The power mechanism provides power for the unmanned forklift's movement, steering, etc. Preferably, the hydraulic pump and pump motor 22 can be integrated into a single structural component and arranged separately from the hydraulic oil tank 23. Figure 2 As shown, the hydraulic pump and pump motor 22 are located in the first mounting area 10. Furthermore, a pipeline channel 13 is provided for arranging the hydraulic pipeline 25. The pipeline channel 13 is located, for example, on the side of the first mounting area 10 and the second mounting area 12, and connects the first mounting area 10 and the second mounting area 12. This allows the hydraulic pump and hydraulic oil tank 23, located in the two mounting areas respectively, to be connected via the hydraulic pipeline 25. This achieves an orderly arrangement of the hydraulic pipeline 25, preventing it from occupying too much space, reducing accidental contact with the hydraulic pipeline 25, and reducing pressure from surrounding components. This improves the reliability of the connection between the hydraulic pump and the hydraulic oil tank 23, ensuring normal oil flow.

[0049] In a preferred embodiment, the wiring channel 11 and the pipe channel 13 are respectively located on opposite sides of the frame mechanism 100. This completely isolates the wiring harness 24 and the hydraulic lines 25, forming a safe isolation distance. This prevents short circuits and other safety accidents caused by leakage in the hydraulic lines 25, thus ensuring the safety of the forklift operation.

[0050] like Figure 2 and Figure 5 As shown, the electrical cabinet 20 is located in the first installation position 101, the hydraulic pump and pump motor 22 are located in front of the electrical cabinet 20, and the hydraulic oil tank 23 is located in the second installation area 12. At this time, a pipeline channel 13 is provided on the side near the hydraulic pump, and correspondingly, a wire passage 11 is provided on the side opposite to the pipeline channel 13, which can effectively and safely isolate the wire harness 24 and the hydraulic pipeline 25.

[0051] In one embodiment, the bottom of the second mounting area 12 is provided with a mounting port 121, and the hydraulic oil tank 23 enters and exits the second mounting area 12 through the mounting port 121. The hydraulic oil tank 23 is provided with a filling port 231, which is exposed in the second mounting area 12.

[0052] like Figure 6 As shown, by setting the mounting port 121 at the bottom of the frame mechanism 100, the hydraulic oil tank 23 can be installed from bottom to top. Since the filling port 231 is exposed, it is convenient for the staff to add oil. The operation is convenient. In addition, when oil leakage occurs, the leaked oil is more likely to be discharged to the outside of the forklift without contaminating other structures or accessories inside the forklift. This helps to protect the working environment inside the forklift and reduce the amount of manual cleaning.

[0053] Specifically, such as Figure 6 As shown, the opening width of the mounting port 121 is greater than the main body width of the hydraulic oil tank 23, so that the main body of the hydraulic oil tank 23 can extend into the second mounting area 12 through the mounting port 121.

[0054] Furthermore, the bottom of the hydraulic oil tank 23 is provided with an outwardly extending mounting portion 232, the mounting portion 232 is provided with a mounting hole 233, the bottom surface of the frame mechanism 100 is provided with a mating hole, and fasteners are sequentially inserted into the mounting hole 233 and the mating hole to fix the hydraulic oil tank 23 to the frame mechanism 100.

[0055] like Figure 6As shown, when the main body of the hydraulic oil tank 23 extends into the second mounting area 12 and the mounting part 232 is attached to the bottom surface of the frame mechanism 100, the hydraulic oil tank 23 can be suspended by bolt fastening. The hydraulic oil tank 23 has mounting parts 232 at both ends along its width direction. The mounting parts 232 are, for example, U-shaped mounting plates, which are welded to the hydraulic oil tank 23. Each mounting plate has two mounting holes 233 to ensure the connection strength with the frame mechanism 100. Fasteners, such as bolts, ensure the secure installation of the hydraulic oil tank 23.

[0056] In one embodiment, an intermediate horizontal plate 14 is provided between the first mounting area 10 and the second mounting area 12 to separate them. For example... Figure 1 and Figure 4 As shown, the middle horizontal plate 14 serves as a load-bearing structure supporting the electrical cabinet 20 and other accessories above, while also preventing heat from the first installation area 10 from being transferred downwards and heat from the second installation area 12 from being transferred upwards, thus enhancing the isolation effect of the accessories on the upper and lower sides.

[0057] Preferably, the middle horizontal plate 14 adopts a bent structure, such as... Figure 4 As shown, the two ends of the middle horizontal plate 14 have downwardly extending folded edges 141. The frame mechanism 100 includes a first side plate 15 and a second side plate 16 respectively disposed on the outer sides of the two ends of the middle horizontal plate 14, so as to... Figure 4 The leftmost side panel is the first side panel 15. A first channel is formed between the first side panel 15 and the lower folded edge 141 adjacent to it. This first channel is, for example, a wire passage 11. Thus, the wire passage 11 can be formed by utilizing the structure / shape of the frame mechanism 100 itself, which is beneficial to the simplification of the structure of the frame mechanism 100, and at the same time can promote the miniaturization and compactness of the frame mechanism 100.

[0058] Furthermore, with Figure 4 The rightmost one is the second side plate 16. A second channel is formed between the second side plate 16 and the lower folded edge 141 near it. This second channel is, for example, a pipe channel 13.

[0059] In a preferred embodiment of this application, the first mounting area 10 further includes a third mounting position 103 that is isolated from both the first mounting position 101 and the second mounting position 102. By increasing the number of mounting positions, more functional accessories can be installed, the space utilization of the frame mechanism 100 can be optimized to a greater extent, and a compact layout can be achieved.

[0060] Understandably, the number of installation positions in the first installation area 10 is not limited to three; it can be more, depending on the number of functional accessories to be configured.

[0061] Preferably, the first mounting position 101 is located near the rear end of the frame mechanism 100, the electrical cabinet 20 is housed in the first mounting position 101, the second mounting position 102 and the third mounting position 103 are both located in front of the first mounting position 101 and are arranged side by side, the battery pack 21 is housed in the second mounting position 102, and the pump motor 22 and the hydraulic pump are housed in the third mounting position 103.

[0062] like Figure 2 As shown, the electrical cabinet 20 has a rectangular structure and occupies most of the space in the first mounting position 101. The battery pack 21 is shorter than the electrical cabinet 20 and basically fills the second mounting position 102. The integrated volume of the pump motor 22 and the hydraulic pump is small, allowing the space in the third mounting position 103 to be minimized. Furthermore, the hydraulic oil tank 23 is roughly located in the central area of ​​the second mounting area 12. This layout optimizes the weight distribution while ensuring the isolation and safe use of each functional component. This results in a uniform load distribution in the first mounting area 10, and the second mounting area 12 maintains a certain load to lower the center of gravity. This improves the overall vehicle stability and prevents severe local vibrations caused by uneven load distribution, which could affect the smooth operation of the forklift.

[0063] In a preferred embodiment of this application, the electrical cabinet 20 is provided with a top cover 201 to enclose the electrical cabinet 20, and the driverless electric forklift includes an outer cover placed on top of the first mounting area 10, which covers the first mounting position 101 and the second mounting position 102.

[0064] like Figure 2 As shown, this application does not specify the installation method of the top cover 201. For example, it can be flipped to the enclosure of the electrical cabinet 20, allowing technicians to flip and open the top cover 201 to inspect the internal components of the electrical cabinet 20. Alternatively, the top cover 201 can be detached from the enclosure of the electrical cabinet 20, and can be removed directly when the electrical cabinet 20 needs to be inspected. Similarly, the outer cover and the frame mechanism 100 can be detached, for example, and the outer cover can be removed when the electrical cabinet 20 needs to be inspected. Preferably, the outer cover can simultaneously cover the electrical cabinet 20, the battery pack 21, the hydraulic pump, and the pump motor 22, providing overall dust and water protection.

[0065] To make the technical solution of this application clearer and more complete, the following will mainly describe the formation of each mounting area and mounting position, as well as the distribution of each functional component, in conjunction with the composition of the frame mechanism 100, so as to provide a frame mechanism 100 with simple structure, compact composition and convenient installation or maintenance of functional components by technicians.

[0066] like Figure 4 As shown, the frame mechanism 100 includes a first mounting area 10 and a second mounting area 12 arranged vertically, with the first mounting area 10 positioned above the second mounting area 12. Despite the above... Figure 2 An example is shown where the battery pack 21 is located in the first mounting area 10 and the hydraulic tank 23 is located in the second mounting area 12. However, it is understood that in other embodiments, the battery pack 21 may also be located in the second mounting area 12, that is, the battery pack 21 and the hydraulic tank 23 may be located in the second mounting area 12.

[0067] In one embodiment, such as Figure 5 and Figure 6 As shown, the bottom of the second installation area 12 is provided with an installation port 121. The hydraulic oil tank 23 enters and exits the second installation area 12 through the installation port 121. The hydraulic oil tank 23 is provided with a filling port 231, which is exposed in the second installation area 12.

[0068] In this embodiment, the second mounting area 12 is used to accommodate the hydraulic oil tank 23. Preferably, the hydraulic oil tank 23 can be suspended in the second mounting area 12, and the hydraulic oil tank 23 can be fastened to the frame mechanism 100 by bolts.

[0069] In another embodiment, the second mounting area 12 is used to accommodate the battery pack 21. Specifically, this application does not specifically limit the mounting method of the battery pack 21, for example, it can be implemented in any of the following ways.

[0070] In one example, the second mounting area 12 has an opening on one side (the bottom of the second mounting area 12 is closed), through which the battery pack 21 enters and exits the second mounting area 12. That is, the second mounting area 12 can form a drawer-type structure, so that the battery pack 21 can be pushed into or pulled out of the second mounting area 12, which is conducive to quick replacement of the battery pack 21, so as to remove the old battery pack 21 with a low charge and install the new battery pack 21 with a full charge.

[0071] In another example, the second mounting area 12 is equipped with a locking element, and the battery pack 21 is equipped with a mating element. The locking element and the mating element cooperate to lock the battery pack 21 onto the frame mechanism 100. In this example, bottom-mounted battery swapping of the battery pack 21 is possible, and the battery pack 21 is detachable, providing conditions for battery swapping. Furthermore, the locking element and the mating element, working together to lock the battery pack 21 onto the frame mechanism 100, ensure the reliability and stability of the battery pack 21's locking, preventing it from shaking or falling during forklift operation and improving safety. The specific structure of the locking element and the mating element is not required in this application; for example, it can be a structure of a locking pin and a locking groove, or a structure of a clamping structure and a lifting ring, etc.

[0072] In one embodiment, the frame mechanism 100 includes a first side plate 15 and a second side plate 16 arranged opposite to each other, and an intermediate horizontal plate 14 vertically disposed between the first side plate 15 and the second side plate 16. The upper and lower sides of the intermediate horizontal plate 14 respectively form a first mounting area 10 and a second mounting area 12.

[0073] like Figure 4 As shown, the horizontal plate of the middle horizontal plate 14 is located at the middle or near the middle of the height of the first side plate 15 and the second side plate 16, such that the portions of the first side plate 15 and the second side plate 16 that are higher than the horizontal plate of the middle horizontal plate 14 enclose the middle horizontal plate 14 to form the first mounting area 10, and the portions of the first side plate 15 and the second side plate 16 that are lower than the horizontal plate of the middle horizontal plate 14 enclose the middle horizontal plate 14 to form the second mounting area 12.

[0074] Furthermore, the bottom end of the first side plate 15 extends inward to form a first folded edge 151, and the bottom end of the second side plate 16 extends inward to form a second folded edge 161, with an installation opening 121 formed between the first folded edge 151 and the second folded edge 161.

[0075] like Figure 4 As shown, the first side plate 15 and the first folded edge 151 form an L-shaped structure, and the second side plate 16 and the second folded edge 161 form an L-shaped structure. When the second mounting area 12 is used to accommodate the hydraulic oil tank 23, the first folded edge 151 and the second folded edge 161 are not connected, so that the bottom of the second mounting area 12 forms a mounting opening 121.

[0076] It is understandable that when the second mounting area 12 is used to accommodate the battery pack 21, the first folded edge 151 and the second folded edge 161 can be connected as one piece to support the battery pack 21, or the first folded edge 151 and the second folded edge 161 can be not connected. Locking elements are provided on the first folded edge 151 and the second folded edge 161 to lock the battery pack 21 onto the frame mechanism 100.

[0077] Furthermore, the two ends of the middle horizontal plate 14 extend downward with lower folded edges 141, and the two lower folded edges 141 are connected to the first folded edge 151 and the second folded edge 161 respectively.

[0078] like Figure 4 As shown, the middle horizontal plate 14 forms an inverted U-shaped structure, and the first side plate 15, the second side plate 16, and the middle horizontal plate 14 together form an I-shape, which can improve structural stability and thus strengthen the load-bearing capacity of multiple functional components. The two lower folded edges 141 are welded to the first folded edge 151 and the second folded edge 161 respectively, ensuring the strength and stability of the overall structural component.

[0079] Preferably, a first channel is formed between a lower folded edge 141 and the first side plate 15, so as to... Figure 4The leftmost side panel is the first side panel 15. A first channel is formed between the first side panel 15 and the lower folded edge 141 adjacent to it. This first channel is, for example, a wire passage 11. Thus, the wire passage 11 can be formed by utilizing the structure / shape of the frame mechanism 100 itself, which is beneficial to the simplification of the structure of the frame mechanism 100, and at the same time can promote the miniaturization and compactness of the frame mechanism 100.

[0080] Furthermore, with Figure 4 The rightmost one is the second side plate 16. A second channel is formed between the second side plate 16 and the lower folded edge 141 near it. This second channel is, for example, a pipe channel 13.

[0081] In one embodiment, the first installation area 10 is provided with a front upright plate 171, a middle upright plate 172 and a rear upright plate 173, and a first installation position 101 is formed between the middle upright plate 172 and the rear upright plate 173, and the electrical cabinet 20 is accommodated in the first installation position 101.

[0082] like Figure 1 As shown, when the intermediate horizontal plate 14 is provided, the front vertical plate 171, the intermediate vertical plate 172, and the rear vertical plate 173 can be welded to the upper surface of the intermediate horizontal plate 14, and the rear vertical plate 173 is welded to the first side plate 15 and the second side plate 16. Of course, it is understandable that the front vertical plate 171, the intermediate vertical plate 172, and the rear vertical plate 173 can also be movably installed so that the space of multiple installation positions can be adjusted according to the size of the accessories.

[0083] Furthermore, a side plate 174 is provided between the front upright plate 171 and the middle upright plate 172. The two sides of the side plate 174 form a second mounting position 102 and a third mounting position 103, respectively, and the pump motor 22 and the hydraulic pump are accommodated in the second mounting position 102 or the third mounting position 103.

[0084] like Figure 1 and Figure 2 As shown, the second mounting position 102 and the third mounting position 103 are arranged side by side, and the space between them can be reasonably allocated to accommodate accessories of different sizes. Preferably, the electrical cabinet 20 has a cuboid structure and can occupy most of the space of the first mounting position 101; the length of the battery pack 21 is less than the length of the electrical cabinet 20 and basically fills the second mounting position 102; the integrated volume of the pump motor 22 and the hydraulic pump is small, so the space of the third mounting position 103 can be set to a minimum.

[0085] Furthermore, the hydraulic oil tank 23 is located in the second installation area 12, and a clearance opening 175 is provided on the front upright plate 171. The hydraulic oil tank 23 and the hydraulic pump are connected through the hydraulic pipeline 25, and the clearance opening 175 is used for the hydraulic pipeline 25 to pass through.

[0086] like Figure 1As shown, when the hydraulic pump is installed in the third mounting position 103, a clearance opening 175 can be provided on the front upright plate 171 near the third mounting position 103 so that one end of the hydraulic pipeline 25 passes through the clearance opening 175 and extends into the third mounting position 103, thereby connecting the hydraulic oil tank 23 and the hydraulic pump.

[0087] It should be noted that the wiring channel 11 and the pipeline channel 13 of this application can also be used as heat dissipation ducts for the battery pack 21 or the hydraulic oil tank 23 to improve the heat dissipation of the battery pack 21 or the hydraulic oil tank 23 during forklift operation and improve its performance.

[0088] The unmanned electric forklift in this application can specifically be an electric counterbalance forklift.

[0089] The technical solutions protected by this invention are not limited to the above embodiments. It should be noted that any combination of the technical solutions of any embodiment with one or more other embodiments is within the protection scope of this invention. Although the invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of this invention are within the scope of protection claimed by this invention.

Claims

1. An unmanned electric forklift, comprising a frame assembly and a body, wherein the body is provided with a driver's cab and a fork mechanism, characterized in that, The top of the frame mechanism is provided with a first mounting area, which includes a first mounting position and a second mounting position that are isolated from each other. The driverless electric forklift also includes an electrical cabinet and a battery pack. The electrical cabinet and the battery pack are interchangeably accommodated in the first mounting position and the second mounting position. The frame mechanism is provided with a wiring channel that communicates with the first mounting area. The wire harness led out from the electrical cabinet is arranged along the wiring channel. The chassis mechanism also has a second mounting area, which is located below the first mounting area. The unmanned electric forklift also includes a power mechanism, which includes a pump motor, a hydraulic pump, and a hydraulic oil tank. The hydraulic oil tank is installed in the second mounting area. The hydraulic oil tank and the hydraulic pump are connected by hydraulic pipelines. The chassis mechanism has pipeline channels for arranging the hydraulic pipelines. An intermediate horizontal plate is provided between the first installation area and the second installation area to separate the two; The two ends of the middle horizontal plate have downward folded edges respectively. The frame mechanism includes a first side plate and a second side plate respectively disposed on the outer sides of the two ends of the middle horizontal plate. A first channel is formed between one of the downward folded edges and the first side plate, and / or a second channel is formed between one of the downward folded edges and the second side plate.

2. The driverless electric forklift according to claim 1, characterized in that, The cable passage and the pipeline passage are respectively located on opposite sides of the frame mechanism.

3. The driverless electric forklift according to claim 1, characterized in that, The bottom of the second installation area is provided with an installation port, through which the hydraulic oil tank enters and exits the second installation area. The hydraulic oil tank is provided with a filling port, which is exposed in the second installation area.

4. The driverless electric forklift according to claim 3, characterized in that, The bottom of the hydraulic oil tank is provided with an outwardly extending mounting part, the mounting part is provided with a mounting hole, and the bottom surface of the frame mechanism is provided with a mating hole. Fasteners are inserted into the mounting hole and the mating hole in sequence to fix the hydraulic oil tank to the frame mechanism.

5. The driverless electric forklift according to claim 1, characterized in that, The first mounting area also includes a third mounting position that is isolated from both the first mounting position and the second mounting position.

6. The driverless electric forklift according to claim 5, characterized in that, The first mounting position is located near the rear end of the vehicle frame mechanism. The electrical cabinet is housed in the first mounting position. The second mounting position and the third mounting position are both located in front of the first mounting position and arranged side by side. The battery pack is housed in the second mounting position. The pump motor and the hydraulic pump are housed in the third mounting position.

7. The driverless electric forklift according to claim 1, characterized in that, The electrical cabinet is provided with a top cover to enclose the electrical cabinet, and the driverless electric forklift includes an outer cover placed on top of the first installation area, the outer cover covering the first installation position and the second installation position.

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