High-lifting all-electric carrier

Abstract

The utility model discloses a high-lift all-electric van which comprises a frame assembly, the frame assembly comprises a middle plate, a door frame and two frame panels, two supporting legs extending forwards are arranged on the middle plate, bearing wheels are arranged at the front ends of the supporting legs, the door frame is vertically installed on the middle plate, and the two frame panels are arranged on the door frame. The two frame panels are fixed to the middle plate and located on the left side and the right side of the door frame respectively, and the frame panels are arranged in a triangular shape. The pallet fork assembly comprises a sliding frame and a plurality of pallet forks, the two sides of the sliding frame are installed on the door frame in a limiting mode and can move up and down along the door frame, and the sliding frame is of an axisymmetric triangular structure; the lifting assembly is used for driving the sliding frame to lift; the driving assembly is used for driving the carrier to walk; and the lower end of the handle assembly is connected with the driving assembly, and the handle assembly is in control connection with the lifting assembly and the driving assembly through a controller. According to the scheme, the pallet fork assembly can move up and down along the portal frame, the lifting height of the carrying vehicle is high, and after the pallet fork assembly is lifted, the carrying vehicle can still be driven to walk.

Description

Technical Field

[0001] This utility model relates to the field of transport vehicles, and in particular to a high-lift all-electric transport vehicle. Background Technology

[0002] A pallet truck is a logistics handling device used to move goods. When used in a handling station, a manual pallet truck inserts its forks into the pallet holes, and a hydraulic system driven by human power lifts and lowers the palletized goods, which are then pulled manually to complete the handling operation. Currently, there is also a semi-electric pallet truck on the market, which uses electricity to raise and lower the forks, but still requires manual pulling to complete the handling operation, resulting in low work efficiency and high labor intensity. Patent application CN217458705U discloses a new type of fully electric high-lift pallet truck, which enables the pallet truck to complete handling operations electrically by setting up electric drive wheels, a power box assembly, and a handle assembly. However, in this solution, the lifting bracket assembly is used to raise and lower the forks. This lifting bracket assembly is a scissor-type assembly, and after rising to a certain height, the entire vehicle is fixed in place, making it impossible to simultaneously lift and move goods, which is very inconvenient. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a high-lift fully electric transport vehicle with a high lifting height and the ability to move as a whole after lifting.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A high-lift fully electric pallet truck includes a frame assembly and a fork assembly, a lifting assembly, a drive assembly, and a handle assembly mounted on the frame assembly.

[0006] The frame assembly includes a center plate, a mast, and two frame panels. The center plate has two forward-extending support legs with load-bearing wheels at the front end. The mast is vertically mounted on the center plate. The two frame panels are fixed to the center plate and located on the left and right sides of the mast, respectively. The frame panels are arranged in a triangular shape.

[0007] The fork assembly includes a carriage and several forks fixed on the carriage. The carriage is mounted on the mast on both sides and can move up and down along the mast. The carriage is an axisymmetric triangular structure.

[0008] Lifting assembly, used to drive the carriage to rise and fall;

[0009] Drive components are used to drive the transport vehicle to move;

[0010] The handle assembly has its lower end connected to the drive assembly, and the handle assembly is controlled and connected to the lifting assembly and drive assembly via a controller.

[0011] In this way, the fork assembly can move up and down along the mast, and the lifting height of the pallet truck is high. Even after the fork assembly is lifted, it can still drive the pallet truck to move.

[0012] Preferably, the frame assembly also includes a middle cover, a drive cover, and a drive mounting plate. The middle cover is triangular in shape, with its two sides fixedly connected to two frame panels respectively. The drive cover is trapezoidal in shape and fixedly located below and behind the middle cover. A space is formed between the frame panels, the middle cover, and the drive cover for installing the lifting assembly, drive assembly, and controller. The drive mounting plate is fixedly installed on the rear side of the mast, extending through the middle cover and into the drive cover, where it is fixedly connected. The outer surface of the frame panel is flush with the outer surface of the middle cover and the outer surface of the drive cover on the same side. This design results in a compact overall structure and small size for the transport vehicle, enabling lifting and handling operations in a confined space.

[0013] Preferably, the electro-hydraulic station assembly in the lifting assembly is fixed to the drive mounting plate and arranged on the left or right side of the drive mounting plate, the drive assembly is arranged and installed below the drive mounting plate, and the lower end of the handle assembly passes through the drive cover and is connected to the drive assembly.

[0014] Preferably, the lifting assembly includes a hydraulic cylinder and an electro-hydraulic power unit assembly. The hydraulic cylinder is vertically fixed on the intermediate plate, and the top of the piston rod of the hydraulic cylinder is connected to the carriage so as to drive the carriage to lift and lower. The electro-hydraulic power unit assembly is connected to the hydraulic cylinder to provide power to the hydraulic cylinder, and the handle assembly is controlled and connected to the electro-hydraulic power unit assembly through a controller.

[0015] Preferably, the gantry includes two columns, each with a vertical gantry groove facing each other; the carriage includes a carriage panel, on which two connecting plates protrude rearward, and at least one roller is provided on the outer side of each connecting plate. The two connecting plates are located between the two columns, and the rollers on the connecting plates are limited in the gantry grooves of the corresponding side columns so that the carriage can move up and down along the gantry. A rearwardly extending upper sealing plate is fixedly provided at the top of the carriage; the hydraulic cylinder of the lifting assembly is located between the two connecting plates of the carriage, and the top of the piston rod of the hydraulic cylinder is fixed to the upper sealing plate of the carriage.

[0016] Preferably, the drive assembly includes a drive wheel, a drive motor, a brake, and a drive housing. The drive housing is mounted on a drive mounting plate and connected to the lower end of the handle assembly. The drive wheel is mounted on the drive housing via bearings. The drive motor and brake are respectively located on the left and right sides of the drive wheel and fixed to the drive housing. The drive motor is used to drive the drive wheel to rotate, and the brake is used to brake the drive wheel. The handle assembly is controlled by a controller connected to the drive motor and brake.

[0017] Preferably, the handle assembly is equipped with control buttons for raising the fork assembly and moving the drive assembly forward and backward.

[0018] Preferably, a battery mounting bracket with an upward opening is fixed on the side of the middle cover near the gantry, the battery is mounted on the battery mounting bracket, the battery is located above the drive assembly, the upper end of the battery protrudes from the middle cover, and the battery is used to provide electrical energy.

[0019] Preferably, the transport vehicle is equipped with a power plug-in device, with a socket on the left or right side of the central cover. The power plug-in device passes through the socket and connects to the battery. This allows for convenient and quick access to and disconnection of the battery from the side.

[0020] Preferably, an emergency stop switch is provided on the side of a frame panel.

[0021] The present invention has the following beneficial effects due to the adoption of the above technical solutions: In this solution, by setting a mast and a fork assembly that moves up and down along the mast, and setting the lifting height of the fork assembly to no more than 0.99 meters, the lifting height of the pallet truck is increased. By setting support legs on the middle plate and load-bearing wheels at the front end of the support legs, the pallet truck can still be driven to move after the fork assembly is lifted; 2. In this solution, by setting triangular frame panels on both sides of the mast, the frame assembly structure is made more compact without reducing the stability of the mast. By setting the carriage as an axisymmetric triangular structure, the carriage structure is made more compact. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a partial exploded structural diagram of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the inner casing;

[0025] Figure 4 This is a schematic diagram of the structure of this utility model after removing the drive cover, middle cover, battery and power plug-in;

[0026] Figure 5 This is a schematic diagram of the structure of this utility model after removing the carriage assembly;

[0027] Figure 6 This is a structural schematic diagram of the carriage assembly in this utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the carriage assembly during lifting in this utility model.

[0029] Figure label:

[0030] 11. Intermediate plate; 111. Support leg; 112. Load-bearing wheel; 12. Mast; 121. Column; 122. Mast slot; 13. Frame panel; 14. Middle cover; 141. Socket; 142. Battery mounting bracket; 15. Drive cover; 16. Drive mounting plate;

[0031] 21. Carriage; 211. Carriage panel; 212. Connecting plate; 213. Roller; 214. Top end plate; 22. Forks;

[0032] 31. Hydraulic cylinder; 32. Electro-hydraulic power unit assembly;

[0033] 41. Drive wheel; 42. Drive motor; 43. Brake; 44. Drive housing;

[0034] 5. Handle assembly;

[0035] 6. Controller;

[0036] 7. Battery;

[0037] 8. Power plug-in;

[0038] 9. Emergency stop switch. Detailed Implementation

[0039] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0040] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., 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 utility model 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 utility model.

[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 utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0042] In this utility model, 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 connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] To clarify, in this scheme, the direction in which the forklift inserts the goods when using the pallet truck is considered "front," and vice versa; the position closest to the center of the pallet truck is considered "inner," and vice versa.

[0045] like Figures 1 to 7 The high-lift fully electric pallet truck shown includes a frame assembly and a fork assembly, a lifting assembly, a drive assembly and a handle assembly 5 mounted on the frame assembly.

[0046] The frame assembly includes a middle plate 11, a mast 12, and two frame panels 13. The middle plate 11 has two forward-extending support legs 111, and the front end of the support legs 111 is provided with a load-bearing wheel 112. The mast 12 is vertically welded to the middle plate 11 and includes two columns 121. Each column 121 has a vertical mast slot 122 that is opposite to the other. The two frame panels 13 are welded to the middle plate 11 and are located on the left and right sides of the mast 12, respectively. The frame panels 13 are triangular in shape and can support the mast 12 to prevent the mast 12 from shaking. This makes the frame assembly structure more compact without reducing the stability of the mast 12.

[0047] like Figures 1 to 4As shown, the frame assembly also includes a middle cover 14, a drive cover 15, and a drive mounting plate 16. The middle cover 14 is triangular in shape, and its two sides are fixedly connected to two frame panels 13 respectively. The drive cover 15 is trapezoidal in shape and is fixedly located at the lower rear of the middle cover 14. A space for installing the lifting assembly, drive assembly, and controller is formed between the frame panels 13, the middle cover 14, and the drive cover 15. The drive mounting plate 16 is fixedly installed on the rear side of the mast 12. The drive mounting plate 16 passes through the middle cover 14, extends into the drive cover 15, and is fixedly connected to the drive cover 15. The outer side of the frame panel 14 is flush with the outer side of the middle cover 14 and the outer side of the drive cover 15 on the same side, thereby making the overall shape more beautiful and compact.

[0048] like Figure 6 As shown, the fork assembly includes a carriage 21 and several forks 22 fixed on the carriage 21. The carriage 21 is mounted on the mast 12 with limiting positions on both sides and can move up and down along the mast 12. The carriage 21 has an axisymmetric triangular structure, thereby increasing the structural compactness of the carriage 21. Specifically, the carriage 21 includes a carriage panel 211, on which two connecting plates 212 protrude rearward. At least one roller 213 is provided on the outer side of each of the two connecting plates 212. The two connecting plates 212 are located between two columns 121. The rollers 213 on the connecting plates 212 are limited in the mast grooves 122 of the corresponding side columns 121 so that the carriage 21 can move up and down along the mast 12. A rearwardly extending upper sealing plate 214 is fixed at the top of the carriage 21. In this design, there are two forks 22, and each fork 22 corresponds to a support leg 111. When the fork assembly descends to its lowest point, the forks 22 can cover the corresponding support leg 111, resulting in a simpler and more compact structure. In this design, the lifting height of the fork assembly does not exceed 0.99 meters.

[0049] The lifting assembly is used to drive the carriage 21 to rise and fall. The lifting assembly includes a hydraulic cylinder 31 and an electro-hydraulic station assembly 32. The hydraulic cylinder 31 is vertically fixed on the intermediate plate 11 and located between the two connecting plates 212 of the carriage 21. The top of the piston rod of the hydraulic cylinder 31 is fixed to the upper sealing plate 214 of the carriage 21. The top of the piston rod of the hydraulic cylinder 32 is connected to the carriage 21, thereby driving the carriage 21 to rise and fall. The electro-hydraulic station assembly 32 is connected to the hydraulic cylinder 31 to provide power to the hydraulic cylinder 31. The electro-hydraulic station assembly 32 is fixed to the drive mounting plate 16 and arranged on the left or right side of the drive mounting plate 16. The drive assembly is arranged and installed below the drive mounting plate 16. The lower end of the handle assembly 5 passes through the drive cover 15 and is connected to the drive assembly.

[0050] The drive assembly is used to drive the transport vehicle to move. The drive assembly includes a drive wheel 41, a drive motor 42, a brake 43, and a drive housing 44. The drive housing 44 is mounted on the drive mounting plate 16 and is connected to the lower end of the handle assembly 5. The drive wheel 41 is rotatably mounted on the drive housing 44 through bearings. The drive motor 42 and the brake 43 are respectively located on the left and right sides of the drive wheel 41 and fixed to the drive housing 44. The drive motor 42 is used to drive the drive wheel 41 to rotate, and the brake 43 is used to brake the drive wheel 41.

[0051] The lower end of the handle assembly 5 passes through the drive housing 15 and connects to the drive assembly. The handle assembly 5 is controlled and connected to the lifting assembly and the drive assembly via a controller. The handle assembly 5 is also controlled and connected to the electro-hydraulic station assembly 32, the drive motor 42, and the brake 43 via the controller. The handle assembly 5 is equipped with control buttons for raising the fork assembly and moving the drive assembly forward and backward.

[0052] like Figure 2 and 3 As shown, a battery mounting bracket 142 with an upward opening is fixed on the side of the middle cover 14 near the mast 12. The battery 7 is mounted on the battery mounting bracket 142, located above the drive assembly, making full use of the space above the drive assembly. The upper end of the battery 7 protrudes from the middle cover 14, and the battery 7 provides power to the entire vehicle. To facilitate power access and disconnection, the transport vehicle is equipped with a power plug-in 8. A socket 141 is opened on the left or right side of the middle cover 14. The power plug-in 8 passes through the socket 141 and connects to the battery 7. When the battery 7 needs to be replaced, the power plug-in 8 is unplugged, the battery 7 is de-energized, and the battery 7 can be removed from above. After the battery 7 is replaced, the power plug-in 8 is plugged in to access the battery 7. The operation is simple.

[0053] In this design, one of the frame panels 13 has an emergency stop switch 9 on its side, which is connected to the battery 7 and the handlebar assembly 5.

[0054] In this plan, such as Figure 7 As shown, when it is necessary to raise the fork assembly, the operator operates the lifting control button on the handle assembly 5. The electro-hydraulic station assembly 32 drives the cylinder 31 to lift, thereby lifting the fork assembly along the mast 12 to the appropriate position. At this time, the user can operate the forward and backward control button on the drive assembly 5. The drive motor 42 drives the drive wheel 41 to rotate, thereby driving the pallet truck to move. This allows the pallet truck to still move after the fork assembly is lifted.

[0055] All features described in the specification, appended claims and drawings, whether individually or in any combination thereof, are essential features of this utility model.

[0056] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, alterations, deletions of some features, additions of features, or recombinations of features to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the innovative principles of the present invention shall still fall within the scope of the technical solutions of the present invention.

Claims

1. A high-lift fully electric pallet truck, comprising a frame assembly and a fork assembly, a lifting assembly, a drive assembly, and a handle assembly (5) mounted on the frame assembly, characterized in that, The frame assembly includes a middle plate (11), a mast (12) and two frame panels (13). The middle plate (11) is provided with two forward-extending support legs (111). The front end of the support legs (111) is provided with a load-bearing wheel (112). The mast (12) is vertically mounted on the middle plate (11). The two frame panels (13) are fixed to the middle plate (11) and are located on the left and right sides of the mast (12) respectively. The frame panels (13) are triangular in shape. The fork assembly includes a carriage (21) and several forks (22) fixed on the carriage (21). The carriage (21) is mounted on the mast (12) on both sides and can move up and down along the mast (12). The carriage (21) is an axisymmetric triangular structure. Lifting assembly for driving the carriage (21) to rise and fall; Drive components are used to drive the transport vehicle to move; The handle assembly (5) is connected at its lower end to the drive assembly. The handle assembly (5) is connected to the lifting assembly and the drive assembly via a controller.

2. The high-lift fully electric pallet truck according to claim 1, characterized in that, The frame assembly also includes a center cover (14), a drive cover (15), and a drive mounting plate (16). The center cover (14) is triangular in shape, and its two sides are fixedly connected to two frame panels (13) respectively. The drive cover (15) is trapezoidal in shape and is fixedly located below the center cover (14). The frame panels (13), center cover (14), and drive cover (15) form a space for installing the lifting assembly, drive assembly, and controller. The drive mounting plate (16) is fixedly installed on the rear side of the mast (12). The drive mounting plate (16) passes through the center cover (14), extends into the drive cover (15), and is fixedly connected to the drive cover (15). The outer side of the frame panel (14) is flush with the outer side of the center cover (14) and the outer side of the drive cover (15) on the same side.

3. A high-lift fully electric pallet truck according to claim 2, characterized in that, The electro-hydraulic station assembly (32) in the lifting assembly is fixed to the drive mounting plate (16) and arranged on the left or right side of the drive mounting plate (16). The drive assembly is arranged and installed below the drive mounting plate (16). The lower end of the handle assembly (5) passes through the drive cover (15) and is connected to the drive assembly.

4. A high-lift fully electric pallet truck according to claim 2, characterized in that, The lifting assembly includes a hydraulic cylinder (31) and an electro-hydraulic power unit assembly (32). The hydraulic cylinder (31) is vertically fixed on the intermediate plate (11). The top of the piston rod of the hydraulic cylinder (32) is connected to the slide (21) so as to drive the slide (21) to lift. The electro-hydraulic power unit assembly (32) is connected to the hydraulic cylinder (31) to provide power to the hydraulic cylinder (31). The handle assembly (5) is controlled and connected to the electro-hydraulic power unit assembly (32) through a controller.

5. A high-lift fully electric pallet truck according to claim 2, characterized in that, The gantry (12) includes two uprights (121), each with a vertical gantry groove (122) facing each other; the carriage (21) includes a carriage panel (211), on which two connecting plates (212) protrude backward, and at least one roller (213) is provided on the outer side of each of the two connecting plates (212). The two connecting plates (212) are located between the two uprights (121), and the connecting plates (213) are positioned between the two uprights (121). The rollers (213) on the 12) are limited in the gantry groove (122) of the corresponding side column (121) so that the slide (21) can move up and down along the gantry (12). The top of the slide (21) is fixed with a rearwardly extending upper sealing plate (214); the hydraulic cylinder (31) of the lifting assembly is located between the two connecting plates (212) of the slide (21), and the top of the piston rod of the hydraulic cylinder (31) is fixed to the upper sealing plate (214) of the slide (21).

6. A high-lift fully electric pallet truck according to claim 2, characterized in that, The drive assembly includes a drive wheel (41), a drive motor (42), a brake (43), and a drive housing (44). The drive housing (44) is mounted on the drive mounting plate (16) and connected to the lower end of the handle assembly (5). The drive wheel (41) is rotatably mounted on the drive housing (44) via bearings. The drive motor (42) and the brake (43) are respectively located on the left and right sides of the drive wheel (41) and fixed to the drive housing (44). The drive motor (42) is used to drive the drive wheel (41) to rotate, and the brake (43) is used to brake the drive wheel (41). The handle assembly (5) is controlled and connected to the drive motor (42) and the brake (43) via a controller.

7. A high-lift fully electric pallet truck according to claim 2, characterized in that, The handle assembly (5) is equipped with control buttons for raising the fork assembly and moving the drive assembly forward and backward.

8. A high-lift fully electric pallet truck according to claim 2, characterized in that, A battery mounting bracket (142) with an upward opening is fixed on the side of the middle cover (14) near the gantry (12). The battery (7) is mounted on the battery mounting bracket (142) and is located above the drive assembly. The upper end of the battery (7) protrudes from the middle cover (14) and is used to provide electrical energy.

9. A high-lift fully electric pallet truck according to claim 8, characterized in that, The transport vehicle is equipped with a power plug-in (8). A socket (141) is opened on the left or right side of the middle cover (14). The power plug-in (8) passes through the socket (141) and connects to the battery (7).

10. A high-lift fully electric pallet truck according to claim 2, characterized in that, An emergency stop switch (9) is provided on the side of a frame panel (13).

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