Frame structure and monocycle comprising same

Abstract

The utility model discloses a frame structure and a wheelbarrow comprising the frame structure, comprising: two groups of energy storage units, each group of energy storage unit comprising at least two battery housings, the top end of which is provided with an opening; the cross beam and cover plate integrated pieces are arranged at the top ends of the energy storage units, and one cross beam and cover plate integrated piece is arranged at the top end of each energy storage unit; each guide rod mechanism comprises a fixed part and a movable part, and the fixed parts and the movable parts are in relative sliding connection, so that the number of cover plates above the battery shell is reduced, the occupation of longitudinal space is reduced, the workload of disassembly and assembly is reduced, and the maintenance efficiency is improved; the introduction of the guide rod mechanism provides additional structural strength and stability for the frame, meanwhile, the connection design of the movable part and the beam cover plate integrated part enables the whole structure to have better buffering performance when the whole structure is impacted, and the structure of the beam cover plate integrated part can improve the buffering stroke. And compared with an equal-volume frame structure, the damping stroke is larger.

Description

Technical Field

[0001] The utility model relates to the technical field of unicycles, in particular to a frame structure and a unicycle comprising the frame structure. Background Art

[0002] Amid the increasing diversity of modern transportation, the unicycle, as a novel and convenient short-distance means of transportation, is gaining popularity among consumers. With its unique single-wheel design and compact structure, the unicycle offers greater flexibility and convenience for urban mobility. However, increasing market demand is also placing higher demands on unicycle design, particularly in terms of compactness, energy efficiency, and user experience.

[0003] The frame structure of a traditional unicycle typically consists of a central wheel with energy storage units (such as battery packs) symmetrically arranged on either side of the wheel to provide the electrical energy required for vehicle operation. Separate battery covers are typically installed above the energy storage units to protect the batteries and facilitate maintenance. Movable parts are often placed between the units to provide shock absorption or guidance. Furthermore, a single upper shell covers the energy storage units, forming a double-layer cover. While this structure improves structural stability and safety, it increases the space above the energy storage units. The assembly of the movable parts with the upper shell is complex, hindering the design concept of miniaturization. Furthermore, each energy storage unit requires a separate battery cover, followed by the upper shell and movable parts. This complex assembly method not only increases manufacturing costs but also introduces numerous inconveniences during battery maintenance, replacement, and overall assembly. On the one hand, battery repair or replacement requires layer-by-layer disassembly, a tedious and time-consuming process that reduces maintenance efficiency. On the other hand, the complex assembly process increases the manufacturing error rate, affecting the overall product quality. Utility Model Content

[0004] In order to overcome at least one of the above-mentioned drawbacks of the prior art, the present invention provides a frame structure and a unicycle including the frame structure. While maintaining the overall height of the vehicle substantially unchanged or with minimal variation, the frame structure facilitates increasing the sliding travel of the movable parts, thereby increasing the shock-absorbing travel and increasing the battery capacity.

[0005] The technical solution adopted by the present invention to solve the problem is:

[0006] A frame structure comprises: two groups of energy storage units located on both sides of the wheels, each group of the energy storage units comprising at least two battery casings, the top ends of the battery casings being open to form openings, and battery modules being arranged in the battery casings; a crossbeam cover plate integral part, the crossbeam cover plate integral part being arranged at the top ends of the energy storage units, and a crossbeam cover plate integral part being arranged at the top ends of each group of the energy storage units, each of the crossbeam cover plate integral parts being used to connect and cover the openings of each battery casing in a corresponding group of the energy storage units; two guide rod mechanisms, each of the guide rod mechanisms being respectively assembled between the battery casings in a corresponding group of the energy storage units, the guide rod mechanisms comprising a fixed part connected to the wheel and a movable part connected to the crossbeam cover plate integral part, the fixed part and the movable part being connected in relative sliding connection.

[0007] By adopting the above solution, the number of covers above the battery casing is reduced, thereby reducing the longitudinal space occupied. At the same time, each group of energy storage units shares a beam cover integral part, thereby connecting multiple battery casings while ensuring the safety of each battery module, improving assembly stability, and further promoting miniaturization. When repairing or replacing the battery, only one beam cover integral part needs to be removed, which greatly reduces the workload of disassembly and installation and improves maintenance efficiency. The introduction of the guide rod mechanism provides additional structural strength and stability for the frame. At the same time, the connection design between its movable parts and the beam cover integral part may also make the overall structure have better buffering performance when impacted. The simple assembly structure and small space occupation of the beam cover integral part can also increase the buffering stroke, which is larger than the shock absorption stroke of the frame structure of the same volume.

[0008] Furthermore, it also includes a control box body, which is arranged between the two groups of energy storage units, and the top surface of the control box body is not higher than the top surface of the beam cover plate integrated part.

[0009] By adopting the above solution, the control box is cleverly placed in the space between the two groups of energy storage units. This layout maximizes the use of the limited space inside the frame, avoids occupying additional areas, and thus maintains the overall compactness of the frame structure.

[0010] Furthermore, each side wall of the battery housing is provided with an assembly plate, and an assembly block is extended from the control box toward each assembly plate, and the assembly block is detachably connected to the assembly plate.

[0011] By adopting the above solution, a stable supporting structure is formed between the battery housing and the control box through the connection of the assembly plate and the assembly block, which helps to enhance the rigidity of the entire frame.

[0012] Furthermore, the assembly plate is located at the side wall edge of the battery housing away from the control box body, one end of the assembly block abuts against the assembly plate, and a first locking member is provided between the assembly plate and the assembly block.

[0013] By adopting the above solution, a tight connection is ensured between the assembly plate and the assembly block, thereby effectively preventing the battery from loosening or falling off due to vibration during driving.

[0014] Furthermore, each group of the energy storage units includes two battery casings, and the crossbeam cover plate integrated part includes a middle section and cover plate sections located on both sides of the middle section. The middle section and the two cover plate sections are formed as one piece, and the cover plate section protrudes toward the inside of the opening of the battery casing to form an insertion block, and the insertion block is used to be fixed to the battery casing, and the cover plate section is provided with a through groove for routing.

[0015] By adopting the above solution, the insert block design provides a reliable connection method for the fixation between the beam cover and the battery casing, which not only enhances the stability of the connection, but also makes the installation and disassembly process simpler and faster. The through groove provides a dedicated channel for routing between battery modules, avoiding the disorderly wiring and improving the overall aesthetics and safety.

[0016] Furthermore, each group of the energy storage units includes two battery housings, an assembly gap is reserved between the two battery housings, and a limiting lip plate is provided on the side of the two battery housings away from the wheel toward the assembly gap, and a gap is left between the two limiting lips.

[0017] Furthermore, the control box body is provided with a limiting structure extending in the direction of the limiting lip plate, and the limiting structure is formed with an arc-shaped groove, and both ends of the arc-shaped groove abut against the limiting lip plate.

[0018] Furthermore, a limiting sliding cavity is formed between the assembly gap, the arc-shaped groove and the limiting lip plate, and a guide rod mechanism is assembled in the limiting sliding cavity.

[0019] By adopting the above scheme, a limiting sliding cavity is formed between the assembly gap, the arc groove and the limiting lip plate, which can provide a good sliding limiting effect for the guide rod mechanism, and at the same time protect the guide rod mechanism from external collisions, thereby improving the safety of the guide rod mechanism.

[0020] Furthermore, connecting holes facing the limiting lip plate are provided at both ends of the arc-shaped groove, and a second locking member is provided between the limiting lip plate and the connecting hole.

[0021] By adopting the above solution, the connection between the arc groove and the limiting lip plate is made more reliable and durable.

[0022] A wheelbarrow comprises a pedal module, wheels and a frame structure, wherein the pedal module comprises a pedal assembly plate and a foot pedal hinged to the pedal assembly plate, the pedal assembly plate is assembled with two groups of energy storage units, and the wheels are assembled between the two groups of energy storage units.

[0023] By adopting the above solution, a miniaturized design of the wheelbarrow can be achieved.

[0024] In summary, the frame structure and the unicycle including the frame structure provided by the present invention have the following technical effects:

[0025] 1. By reducing the number of covers above the battery housing, specifically simplifying the traditional double-layer cover structure to a single-layer crossbeam cover, the space occupied above the energy storage unit is significantly reduced. This design makes the entire frame structure more compact, helping to achieve the miniaturization goal of the unicycle and meet the portability and flexibility requirements of modern transportation.

[0026] 2. By reducing the number of parts and simplifying the assembly process, this frame structure can reduce material and labor costs during the manufacturing process. In addition, a simpler structure also means a lower error rate and higher production efficiency, further reducing overall manufacturing costs;

[0027] 3. When repairing or replacing batteries or moving parts, only one crossbeam cover needs to be removed to access all battery housings and moving parts in the entire energy storage unit, greatly reducing the workload of disassembly and installation. This design makes the maintenance process simpler and faster, improves maintenance efficiency, and reduces maintenance costs and time costs for users;

[0028] 4. The introduction of a guide rod mechanism provides additional structural strength and stability to the frame. The fixed components are connected to the wheels, while the movable components are connected to the integrated crossbeam cover. This relative sliding connection ensures overall structural stability and provides improved shock absorption. Due to the reduced volume of the integrated crossbeam cover, the movable components have a longer cushioning stroke compared to a frame structure of the same size. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the utility model;

[0030] Figure 2 This is a schematic diagram of a partial explosion structure of an embodiment of the present utility model;

[0031] Figure 3 This is a schematic diagram of the control box structure of an embodiment of the utility model;

[0032] Figure 4 This is a schematic diagram of the explosion structure of the control box of an embodiment of the utility model;

[0033] Figure 5 This is a schematic diagram of the integrated structure of the beam cover plate of an embodiment of the present utility model.

[0034] Among them, the meanings of the figure marks are as follows: 1. energy storage unit; 11. battery shell; 111. opening; 112. battery module; 12. assembly plate; 13. assembly gap; 14. limiting lip plate; 2. crossbeam cover plate integrated part; 21. cover plate section; 211. insertion block; 212. through groove; 22. middle section; 3. control box body; 31. control box chassis; 311. assembly block; 312. second screw hole; 32. control box cover body; 321. screw assembly groove; 322. first screw hole; 323. electronic control unit; 34. limiting structure; 341. arc groove; 342. connecting hole; 35. second locking member; 4. first locking member; 5. limiting sliding cavity; 6. first fastener; 7. pedal module; 8. wheel; 9. guide rod mechanism; 91. fixing member; 92. movable member. DETAILED DESCRIPTION

[0035] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described and discussed below in conjunction with the drawings of the present invention. Obviously, what is described here is only a part of the examples of the present invention, not all the examples. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0036] In order to facilitate the understanding of the embodiments of the present invention, the following will be further explained with reference to specific embodiments as examples in conjunction with the drawings, and each embodiment does not constitute a limitation on the embodiments of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0039] Example 1 of the present utility model is shown in FIG. Figures 1-4 As shown, a frame structure is disclosed, including two groups of energy storage units 1, a crossbeam cover plate integral part 2 and two guide rod mechanisms 9, the two groups of energy storage units 1 are respectively arranged on both sides of the wheel 8, and each group of energy storage units 1 includes at least two battery shells 11. In this embodiment 1, each group of energy storage units 1 includes two battery shells 11 as an example for introduction. The structures in other embodiments can be adaptively changed according to the number of battery shells 11; specifically, the top of the battery shell 11 is opened to form an opening 111, and a battery module 112 is arranged in the battery shell 11, the crossbeam cover plate integral part 2 is arranged at the top of the energy storage unit 1, and a crossbeam cover plate integral part 2 is provided at the top of each group of energy storage units 1, each of the cover plate integral part 2 is used to connect and cover the opening 111 of each battery shell 11 in a corresponding group of energy storage units 1, and the two guide rod mechanisms 9 are respectively assembled between the two battery shells 11 in a corresponding energy storage unit 1. The guide rod mechanism 9 includes a fixed part 91 connected to the wheel 8 and a movable part 92 connected to the beam cover plate integral part 2. The fixed part 91 and the movable part 92 are connected in relative sliding connection to provide guidance for the shock absorption of the box structure; by reducing the number of covers above the battery casing 11, the longitudinal space occupancy is reduced, and at the same time, each group of energy storage units 1 shares a beam cover plate integral part 2, which ensures the safety of each battery module 112 while connecting multiple battery casings 11, thereby improving assembly stability and further promoting miniaturization; when repairing or replacing the battery, only one beam cover plate integral part 2 needs to be removed, which greatly reduces the workload of disassembly and installation and improves maintenance efficiency. The introduction of the guide rod mechanism 9 provides additional structural strength and stability for the frame. At the same time, the connection design of its movable part 92 and the beam cover plate integral part 2 may also make the overall structure have better buffering performance when impacted. The simple assembly structure of the beam cover plate integral part 2 can also improve the buffering stroke.

[0040] In the prior art, the upper shell is designed to be integrated with the control unit, and for this purpose, a larger cavity space needs to be reserved for the upper shell, which further aggravates the volume expansion of the wheelbarrow and limits the possibility of its miniaturization. Moreover, if the upper cover and the control unit are moved downward as a whole in order to reduce the volume, it will inevitably compress the layout space of the energy storage unit and the shock absorption stroke space, thereby affecting the capacity, endurance and shock absorption effect of the battery pack. In order to solve the above problems, this embodiment 1 also includes a control box 3, which is arranged between the two groups of energy storage units 1, and the top surface of the control box 3 is not higher than the top surface of the crossbeam cover plate integral part 2. Therefore, the control box 3 can be adjusted at will in the space above the wheel 8, as long as it is not higher than the crossbeam cover plate integral part 2. The control box 3 and the crossbeam cover plate integral part 2 are designed to be separated, so that the control box 3 can be set between the two groups of energy storage units 1, and its top surface is not higher than the top surface of the crossbeam cover plate integral part 2, so as to meet the requirements of miniaturization design without affecting the installation of the control box 3. Optionally, the movable part 92 and the crossbeam cover plate integral part 2 include but are not limited to threaded connection, clip connection or bolt locking connection, and are fixedly connected to the crossbeam cover plate integral part 2 through the guide rod mechanism 9. Since the control box 3 is installed inside, it will not form an obstruction to the top of the crossbeam cover plate integral part 2, which can further optimize the operating space, reduce the assembly steps, reduce the difficulty of disassembly and assembly, and improve the assembly efficiency. The frame structure is miniaturized while ensuring the shock absorption stroke, which is larger than the shock absorption stroke of the frame structure of the same volume.

[0041] It should be noted that the connection method between the beam cover plate integral part 2 and the opening 111 includes but is not limited to snap connection or screw connection. In this embodiment 1, each group of the energy storage units 1 includes two battery housings 11, and the beam cover plate integral part 2 includes a middle section 22 and cover plate sections 21 located on both sides of the middle section 22. The middle section 22 and the two cover plate sections 21 are formed as one piece, and the cover plate section 21 protrudes toward the inside of the opening 111 of the battery housing 11 to form an insertion block 211. The insertion block 211 is used to be fixedly connected to the battery housing 11, and the cover plate section 21 is provided with a through groove 212 for wiring. The insertion block 211 is designed to provide a reliable connection method for the fixed connection between the beam cover plate and the battery housing 11, which not only enhances the stability of the connection, but also makes the installation and disassembly process simpler and faster. The through groove 212 provides a special channel for wiring between the battery modules 112, avoiding the situation of disorderly wiring and improving the overall aesthetics and safety. Optionally, a plurality of through slots 212 are provided to form a plurality of rectangular matrix structures. In other embodiments, the through slots 212 may also be other structures.

[0042] In some embodiments, in order to further improve the assembly stability between the insert block 211 and the battery housing 11, a plurality of screw holes are provided on the side wall of the insert block 211, and screws are passed through the screw holes around the opening 111 of the battery housing 11 into the screw holes of the insert block 211 to achieve a stable assembly effect of the crossbeam cover plate integral part 2 and the opening 111.

[0043] Optionally, the guide rod mechanism 9 can be a guiding structure such as a piston rod and piston sleeve, a sliding rod and a fixed block with a perforation, a guide rod and a guide sleeve, etc. Of course, it can also be other devices that can achieve shock absorption and guidance, and this is not specifically limited in this embodiment 1. It should be noted that the guide rod mechanism 9 can itself have a shock absorption effect, such as a piston rod and piston sleeve with a shock absorption effect, or it can only have a guide rod and guide sleeve with a guiding function, and only a shock absorber can be added above the wheel later.

[0044] In order to enable the control box 3 to be fixed between the two energy storage units 1, in some embodiments, an assembly plate 12 is provided on the side wall of each battery housing 11, and an assembly block 311 is extended from the control box 3 toward each assembly plate 12. The assembly block 311 is detachably connected to the assembly plate 12. Through the connection between the assembly plate 12 and the assembly block 311, a stable support structure is formed between the battery housing 11 and the control box 3, which helps to enhance the rigidity of the entire vehicle frame. Optionally, the assembly plate 12 is located at the edge of the side wall of the battery housing 11 away from the control box 3, and one end of the assembly block 311 abuts against the assembly plate 12. A first locking member 4 is provided between the assembly plate 12 and the assembly block 311 to ensure a tight connection between the assembly plate 12 and the assembly block 311, thereby effectively preventing the battery from loosening or falling off due to vibration during driving.

[0045] It should be noted that the first locking member 4 is preferably a screw, and the assembly plate 12 is provided with a screw hole for the first locking member 4 to pass through, and the number of screw holes and first locking members 4 is not limited. Preferably, the screw holes are arranged longitudinally, so that the assembly block 311 can be adjusted to the installation position on the assembly plate 12 according to the actual space required by the control box 3 to achieve a space maximization effect.

[0046] In this embodiment 1, the control box body 3 includes a control box chassis 31 and a control box cover 32. The control box chassis 31 is equipped with an electronic control unit 323. The bottom of the control box cover 32 is concave to form a receiving groove for covering the electronic control unit 323. The control box cover 32 is mounted on the control box chassis 31. The control box chassis 31 bears the weight of the entire electronic control unit 323 and provides a stable installation platform for it. The control box cover 32 is mainly used to protect the electronic control unit 323 from external environmental influences such as dust and moisture. The receiving groove formed by the concave bottom matches the shape of the electronic control unit 323, ensuring that the cover can tightly cover the electronic control unit 323, thereby providing effective protection. To this end, the assembly block 311 is arranged on the control box chassis 31, and there are four assembly blocks 311, which extend from four corners toward the battery housing 11 until they are against the assembly plate 12 of the battery housing 11. Two screw holes are longitudinally provided on the assembly plate 12, so that the assembly can be selected in the two screw holes to achieve the requirement that the top surface of the control box cover body 32 is not higher than the top surface of the crossbeam cover plate integral part 2.

[0047] Specifically, the assembly between the control box chassis 31 and the control box cover 32 is fixed by screws. In this embodiment 1, the side wall of the control box cover 32 is provided with a concave screw assembly groove 321. The screw assembly groove 321 is provided with a first screw hole 322 on the side facing the control box chassis 31. The control box chassis 31 is provided with a second screw hole 312 corresponding to the first screw hole 322. A first fastener 6 is inserted between the first screw hole 322 and the second screw hole 312. This arrangement makes the appearance of the entire control box 3 more neat and also avoids the fastener being directly exposed to the external environment and possibly corroded or damaged. The control box cover 32 is tightly connected to the chassis by the tightening operation, ensuring the stability and reliability of the connection, which can withstand various forces and vibrations generated during vehicle driving. The fastener is preferably a screw.

[0048] In this embodiment 1, each group of the energy storage units 1 includes two battery shells 11, and an assembly gap 13 is reserved between the two battery shells 11, and a limiting lip plate 14 is provided on the side of the two battery shells 11 away from the wheel 8 toward the assembly gap 13, and a gap is left between the two limiting lips 14. The control box 3 extends a limiting structure 34 in the direction of the limiting lip plate 14, and the limiting structure 34 is formed with an arc groove 341. The two ends of the arc groove 341 are against the limiting lip plate 14, and a limiting sliding cavity 5 is formed between the assembly gap 13, the arc groove 341 and the limiting lip plate 14. A guide rod mechanism 9 is installed in the limiting sliding cavity 5. This arrangement can provide a good sliding limiting effect for the guide rod mechanism 9, and at the same time can protect the guide rod mechanism 9 from external collisions, thereby improving the safety of the guide rod mechanism 9.

[0049] Furthermore, the arcuate slot 341 is provided with connection holes 342 at both ends thereof, facing the limiting lip plate 14. A second locking member 35 is provided between the limiting lip plate 14 and the connection holes 342, making the connection between the arcuate slot 341 and the limiting lip plate 14 more reliable and durable. The second locking member 35 is preferably a screw, and the limiting lip plate 14 is provided with a screw hole for the second locking member 35 to pass through. The number of screw holes and second locking members 35 is not specifically limited.

[0050] The present utility model also relates to a unicycle, comprising a pedal module 7, wheels 8 and a frame structure, wherein the pedal module 7 comprises a pedal assembly plate 12 and a foot pedal hinged to the pedal assembly plate 12, the pedal assembly plate 12 is assembled with two groups of energy storage units 1, the wheels 8 are assembled between the two groups of energy storage units 1, the guide rod mechanism 9 is arranged in the limiting sliding cavity 5, and the fixing part 21 and the movable part 22 of the guide rod mechanism 9 are respectively fixed in the limiting sliding cavity 5 and on the wheel hub of the wheel 8, so that relative displacement can occur between the wheel hub and the entire frame to achieve a buffering and shock absorption effect, and at the same time the frame structure can realize the miniaturized design of the unicycle.

[0051] In summary, the frame structure and the unicycle including the frame structure provided by the present invention have the following technical effects:

[0052] 1. By reducing the number of covers above the battery housing 11, specifically simplifying the traditional double-layer cover structure to a single-layer crossbeam cover 2, the space occupied above the energy storage unit 1 is significantly reduced. This design makes the entire frame structure more compact, helping to achieve the goal of miniaturization of the unicycle and meet the portability and flexibility requirements of modern transportation.

[0053] 2. By reducing the number of parts and simplifying the assembly process, this frame structure can reduce material and labor costs during the manufacturing process. In addition, a simpler structure also means a lower error rate and higher production efficiency, further reducing overall manufacturing costs;

[0054] 3. When repairing or replacing batteries or movable parts 92, only one crossbeam cover plate integral part 2 needs to be removed to access all battery housings 11 and movable parts 92 in the entire energy storage unit 1, significantly reducing the workload of disassembly and installation. This design makes the maintenance process simpler and faster, improves maintenance efficiency, and reduces maintenance costs and time costs for users.

[0055] 4. The introduction of the guide rod mechanism 9 provides additional structural strength and stability to the vehicle frame. The fixed member is connected to the wheel 8, while the movable member 92 is connected to the crossbeam cover plate integral member 2. This relative sliding connection ensures overall structural stability and provides improved shock absorption. Due to the reduced volume of the crossbeam cover plate integral member 2, the movable member 92 has a longer cushioning stroke compared to a vehicle frame of the same volume.

[0056] The technical means disclosed in the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A frame structure, characterized in that: include: Two groups of energy storage units (1) are located on both sides of the wheel (8), each group of the energy storage units (1) includes at least two battery housings (11), the top ends of the battery housings (11) are open to form openings (111), and a battery module (112) is arranged in the battery housings (11); A crossbeam cover plate integral part (2), the crossbeam cover plate integral part (2) being arranged at the top end of the energy storage unit (1), and a crossbeam cover plate integral part (2) being arranged at the top end of each group of energy storage units (1), and each crossbeam cover plate integral part (2) being used to connect and cover the opening (111) of each battery housing (11) in a corresponding group of energy storage units (1); Two guide rod mechanisms (9), each of which is respectively assembled between battery housings (11) in a corresponding group of energy storage units (1), the guide rod mechanism (9) comprising a fixed part (91) connected to the wheel (8) and a movable part (92) connected to the crossbeam cover plate integral part (2), the fixed part (91) and the movable part (92) being connected in relative sliding manner.

2. A vehicle frame structure according to claim 1, characterized in that: It also includes a control box (3), which is arranged between the two groups of energy storage units (1), and the top surface of the control box (3) is not higher than the top surface of the beam cover plate integral part (2).

3. A vehicle frame structure according to claim 2, characterized in that: A side wall of each battery housing (11) is provided with an assembly plate (12), and an assembly block (311) extends from the control box (3) toward each assembly plate (12), wherein the assembly block (311) is detachably connected to the assembly plate (12).

4. A vehicle frame structure according to claim 3, characterized in that: The assembly plate (12) is located at the side wall edge of the battery housing (11) away from the control box (3), one end of the assembly block (311) abuts against the assembly plate (12), and a first locking member (4) is provided between the assembly plate (12) and the assembly block (311).

5. The vehicle frame structure according to claim 1, characterized in that: Each group of energy storage units (1) includes two battery housings (11); the crossbeam cover plate integrated component (2) includes a middle section (22) and cover plate sections (21) located on both sides of the middle section (22); the middle section (22) and the two cover plate sections (21) are integrally formed; the cover plate sections (21) protrude toward the inside of the opening (111) of the battery housing (11) to form an insertion block (211); the insertion block (211) is used to be fixedly connected to the battery housing (11); and the cover plate section (21) is provided with a through groove (212) for wiring.

6. The vehicle frame structure according to claim 2, characterized in that: Each group of energy storage units (1) includes two battery housings (11), an assembly gap (13) for assembling a guide rod mechanism (9) is reserved between the two battery housings (11), and a limiting lip plate (14) is provided on the side of the two battery housings (11) away from the wheel (8) and facing the assembly gap (13), with a gap left between the two limiting lip plates (14).

7. A vehicle frame structure according to claim 6, characterized in that: The control box (3) extends a limiting structure (34) in the direction of the limiting lip plate (14), and the limiting structure (34) is formed with an arc-shaped groove (341), and both ends of the arc-shaped groove (341) abut against the limiting lip plate (14).

8. The vehicle frame structure according to claim 7, characterized in that: A limiting sliding cavity (5) is formed between the assembly gap (13), the arc-shaped groove (341) and the limiting lip plate (14), and the guide rod mechanism (9) is assembled in the limiting sliding cavity (5).

9. The vehicle frame structure according to claim 7, characterized in that: Connecting holes (342) facing the limiting lip plate (14) are provided at both ends of the arc-shaped groove (341), and a second locking member (35) is provided between the limiting lip plate (14) and the connecting hole (342).

10. A wheelbarrow, characterized in that: The invention comprises a pedal module (7), a wheel (8) and a frame structure according to any one of claims 1 to 9, wherein the pedal module (7) comprises a pedal assembly plate (12) and a foot pedal hinged to the pedal assembly plate (12), the pedal assembly plate (12) is assembled with two groups of energy storage units (1), and the wheel (8) is assembled between the two groups of energy storage units (1).

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