transport vehicle

Abstract

The utility model provides a transport vehicle. Transport vehicle includes frame base body, balance mechanism and wheel assembly. Frame base body is used for carrying goods. Two groups of balance mechanism are along the width direction interval arrangement of frame base body, and each group of balance mechanism includes first swing arm and two second swing arms. First swing arm is swingably connected to frame base body through first pivot. Two second swing arms are swingably connected to both ends of first swing arm through second pivot. Wheel assembly includes multiple groups of wheel train unit corresponding with the number of second swing arm, and each group of wheel train unit corresponds to a second swing arm, and each group of wheel train unit includes two or four wheels, and the wheels are connected to both ends of second swing arm. The rotation axis of first pivot and second pivot is parallel to each other and is spaced along the length direction of frame base body. The scheme constitutes double -deck automatic balance mechanism, and the self -balancing angle of wheel assembly is increased. Through two or four wheels, transport vehicle has more contact points with the ground in the driving process.

Description

Technical Field

[0001] This utility model relates to the field of transportation technology, and more specifically to a transport vehicle. Background Technology

[0002] Traditional transport vehicles mostly use rigid frame structures, which struggle to automatically adjust their vehicle posture and wheel load when facing complex road conditions, such as uneven surfaces, potholes, or significant slopes. When one wheel encounters an obstacle or dent, the vehicle tilts noticeably, causing excessive pressure on the other wheel. This not only increases drag and reduces transport efficiency but can also damage wheels, the frame, and other components, shortening the equipment's lifespan. Furthermore, this imbalance can cause cargo to sway during transport, increasing the risk of damage.

[0003] Therefore, there is a need to provide a transport vehicle that can at least partially solve the above problems. Utility Model Content

[0004] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] To at least partially solve the above problems, this utility model provides a transport vehicle for transporting goods, comprising:

[0006] The vehicle frame base is used to support the cargo;

[0007] Two sets of balancing mechanisms are spaced apart along the width direction of the vehicle frame base, and each set of balancing mechanisms includes:

[0008] The first swing arm is swayably connected to the vehicle frame base via the first pivot.

[0009] Two second swing arms are oscillatingly connected to the two ends of the first swing arm via a second pivot.

[0010] The wheel assembly includes multiple sets of wheel train units corresponding to the number of second swing arms. Each set of wheel train units corresponds to one second swing arm. Each set of wheel train units includes two or four wheels, which are connected to the two ends of the second swing arms.

[0011] The rotation axes of the first and second rotating shafts are parallel to each other and spaced apart along the length of the frame base.

[0012] According to the transport vehicle provided by this utility model, two sets of balancing mechanisms are spaced apart along the width direction of the vehicle frame base, enabling the transport vehicle to achieve better balance in the width direction. Through the dual swinging of the first and second swing arms, and the specific arrangement of the first and second rotating shafts, a double-layered automatic balancing mechanism is formed, increasing the self-balancing angle of the wheel assembly. The arrangement of two or four wheels provides more contact points with the ground during operation, better maintaining the balance of the transport vehicle.

[0013] Optionally, in the projection onto a plane perpendicular to the width direction, in each set of the balancing mechanisms, the line connecting the rotation axes of the two second rotating shafts is not collinear with the rotation axis of the first rotating shaft.

[0014] Optionally, along the height direction of the frame base, the rotation axis of the first rotating shaft is located above the line connecting the rotation axes of the two second rotating shafts.

[0015] Optionally, the first swing arm includes a main body, which has an arc-shaped structure that is low in the middle and high at both ends, and the first pivot is connected to the middle of the main body.

[0016] Optionally, the first swing arm further includes a connecting portion, the two connecting portions being respectively connected to the two ends of the main body, and the connecting portion extending downward from the main body, and the second rotating shaft being connected to the connecting portion.

[0017] Optionally, the transport vehicle further includes a box girder extending along the height direction of the frame base, the frame base being connected to the upper end of the box girder, and the first pivot being connected to the lower end of the box girder.

[0018] Optionally, each end of the second swing arm is provided with two wheels, the two wheels are connected to the second swing arm through the same axle, the extension direction of the axle is perpendicular to the length direction, and the wheels are rotatably connected to the axle.

[0019] Optionally, the axle has a connecting hole extending along the length direction at its center, and the axle is connected to the second swing arm through the connecting hole.

[0020] Optionally, the axle and the second swing arm are connected by a bearing, and the axis of the bearing is parallel to the length direction.

[0021] Optionally, the transport vehicle further includes a traction mechanism, which is spaced apart from the balancing mechanism along the length direction. Attached Figure Description

[0022] The following drawings, which illustrate embodiments of the present invention, are incorporated herein as part of the present invention for understanding the invention. The drawings show embodiments of the present invention and their descriptions, serving to explain the principles of the present invention. In the drawings,

[0023] Figure 1 This is a top view schematic diagram of a transport vehicle according to a preferred embodiment of the present invention;

[0024] Figure 2 for Figure 1 An enlarged schematic diagram of part a in the diagram;

[0025] Figure 3 For along Figure 1 A schematic diagram of the cross-section intercepted by the centerline AA;

[0026] Figure 4 This is a front view schematic diagram of a preferred embodiment of the balance mechanism and wheel assembly of the present utility model.

[0027] Figure 5 This is a side view of a wheel and axle according to a preferred embodiment of the present invention.

[0028] Figure 6 This is a schematic diagram of the structure of a transport vehicle on an arched road surface according to a preferred embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of a transport vehicle on a concave road surface according to a preferred embodiment of the present invention.

[0030] Figure 8 This is a schematic diagram of the structure of a transport vehicle on a sloping road, according to a preferred embodiment of the present invention.

[0031] Figure 9 This is a schematic diagram of the structure of a transport vehicle on a wavy road surface, representing a preferred embodiment of the present invention.

[0032] Reference Signs List

[0033] 10: Chassis base

[0034] 11: Square Box Girder

[0035] 12: Cable tray

[0036] 20: Balancing Mechanism

[0037] 21: First swing arm

[0038] 211: Main Body

[0039] 212: Connecting part

[0040] 22: Second swing arm

[0041] 221: Bearing housing

[0042] 23: First pivot

[0043] 24: Second pivot

[0044] 30: Wheel

[0045] 31: Wheel and axle

[0046] 32: Connecting hole

[0047] 40: Traction mechanism

[0048] DL: Length direction

[0049] DW: Width direction

[0050] DH: Altitude Detailed Implementation

[0051] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with embodiments of the present invention.

[0052] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0053] In this document, ordinal numbers such as "first" and "second" used in this invention are merely identifiers and do not have any other meaning, such as a specific order. Moreover, for example, the term "first component" does not imply the existence of "second component," and the term "second component" does not imply the existence of "first component."

[0054] In this article, terms such as "up," "down," "front," "back," "left," and "right" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0055] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0056] Unless otherwise stated, the numerical ranges in this document include not only the entire range within its two endpoints, but also the subranges contained therein.

[0057] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of the present invention is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art.

[0058] Reference Figures 1 to 4 This utility model provides a cargo transport vehicle. The transport vehicle includes a frame base 10, a balancing mechanism 20, and a wheel assembly. The frame base 10 is used to carry cargo. Two sets of balancing mechanisms 20 are spaced apart along the width direction DW of the frame base 10. Each set of balancing mechanisms 20 includes a first swing arm 21 and two second swing arms 22. The first swing arm 21 is swayably connected to the frame base 10 via a first pivot 23. The two second swing arms 22 are swayably connected to the two ends of the first swing arm 21 via second pivot 24. The wheel assembly includes multiple sets of wheel train units corresponding to the number of second swing arms 22. Each set of wheel train units corresponds to one second swing arm 22. Each set of wheel train units includes two or four wheels 30, which are connected to the two ends of the second swing arms 22. The rotation axes of the first pivot 23 and the second pivot 24 are parallel to each other and spaced apart along the length direction DL of the frame base 10.

[0059] In this design, the chassis base 10 serves as the basic load-bearing component of the entire transport vehicle. Its main function is to carry the cargo, while also providing an installation foundation and structural support for other components, ensuring that the entire transport vehicle has a stable frame during operation.

[0060] Two sets of balancing mechanisms 20 are spaced apart along the width direction DW of the chassis base 10, enabling the transport vehicle to achieve better balance in the width direction DW. When there are undulations on one side of the road surface, the balancing mechanisms 20 on both sides can work together to adjust the position and force of the wheels 30. The first pivot 23 provides a fulcrum for the first swing arm 21, allowing the first swing arm 21 to rotate around this axis within a certain range, thereby driving other components to move accordingly to adapt to changes in the road surface. The second pivot 24 allows the second swing arm 22 to swing relative to the first swing arm 21, further increasing the flexibility and adjustment range of the entire balancing mechanism 20. The rotation axes of the first pivot 23 and the second pivot 24 are parallel to each other and spaced apart along the length direction DL of the chassis base 10. This design ensures the coordination of movement between the swing arms and provides greater swing space for the wheel assembly.

[0061] Each wheel train unit corresponds to a second swing arm 22, enabling each second swing arm 22 to independently control the movement of a group of wheel train units, thereby improving the response speed and adjustment accuracy of the wheel 30 to changes in road surface. By connecting the wheel 30 to both ends of the second swing arm 22, when the second swing arm 22 swings, it can drive the wheel 30 to move up and down, changing the contact state between the wheel 30 and the ground, thus achieving the self-balancing function of the wheel assembly.

[0062] Each wheel unit consists of two or four wheels 30, providing more contact points with the ground during travel and enabling better balance of the transport vehicle.

[0063] In this design, a double-layered automatic balancing mechanism is formed by the dual swing of the first swing arm 21 and the second swing arm 22, as well as the specific arrangement of the first rotating shaft 23 and the second rotating shaft 24, increasing the self-balancing angle of the wheel assembly. The wheel assembly has a larger swing angle and self-balancing capability. When the transport vehicle encounters complex and bumpy road surfaces, each wheel 30 can automatically adjust its position and force according to the actual road conditions, better adapting to changes in road undulations. Simultaneously, the good balance performance also helps reduce vibration and impact during the transport vehicle's operation, further protecting other components on the transport vehicle and the cargo it carries.

[0064] Optionally, in the projection onto a plane perpendicular to the width direction DW, in each set of balancing mechanisms 20, the line connecting the rotation axes of the two second rotating shafts 24 is not collinear with the rotation axis of the first rotating shaft 23. The rotation axes of the two second rotating shafts 24 and the first rotating shaft 23 form a triangular arrangement, which enables the entire mechanism to maintain structural stability when subjected to various external forces, and is not prone to deformation or loosening.

[0065] Furthermore, along the height direction DH of the frame base 10, the rotation axis of the first pivot 23 is located above the line connecting the rotation axes of the two second pivots 24. The relatively high position of the first pivot 23 provides a more suitable swing fulcrum position for the first swing arm 21, and when the second swing arm 22 swings, it can more effectively drive the wheel 30 to move up and down, giving the wheel assembly a larger swing angle.

[0066] Optionally, the first swing arm 21 includes a main body 211, which has an arc-shaped structure that is low in the middle and high at both ends. The first pivot 23 is connected to the middle of the main body 211. The first swing arm 21 adopts an arc-shaped structure that is low in the middle and high at both ends. Under the premise of meeting the requirements of strength and movement, the central recessed part can be used to provide a sinking space for the frame base 10, thereby lowering the center of gravity of the vehicle body.

[0067] Based on the above embodiment, the first swing arm 21 further includes connecting portions 212. Two connecting portions 212 are respectively connected to the two ends of the main body 211, and the connecting portions 212 extend downwards from the main body 211. The second rotating shaft 24 is connected to the connecting portions 212. The connection portions 212 optimize the force transmission path. When the wheel 30 encounters bumps or impacts, the force is first transmitted to the second rotating shaft 24 via the second swing arm 22, and then to the main body 211 via the connecting portions 212. The main body 211 and the connecting portions 212 together form an "M"-shaped structure, avoiding excessive local stress concentration, distributing the force evenly across the entire first swing arm 21, and giving the first swing arm 21 a more reasonable movement trajectory during swinging. The "M"-shaped structure of the first swing arm 21 allows for a lower frame base 10 design while ensuring wheel 30 installation and normal movement, thereby lowering the vehicle's center of gravity and effectively reducing swaying and bumping during transport.

[0068] To facilitate the connection between the frame base 10 and the first swing arm 21, the transport vehicle also includes a box girder 11, which extends along the height direction DH of the frame base 10. The frame base 10 is connected to the upper end of the box girder 11. Specifically, a bridge frame 12 is fixedly connected to the upper end of the box girder 11, and the bridge frame 12 is connected to the frame base 10. A first pivot 23 is connected to the lower end of the box girder 11. Specifically, the lower end of the box girder 11 is rotatably connected to the first pivot 23, and the first pivot 23 is rotatably connected to the first swing arm 21. By rationally arranging the first pivot 23 along the height direction DH of the frame base 10 using the box girder 11, combined with the bow-shaped structure and "M"-shaped structure design of the first swing arm 21, the frame base 10 can be designed to be lower. In addition, the arrangement of the box girder 11 also optimizes the force transmission path, allowing forces to be transmitted more smoothly between components, avoiding excessive local stress concentration, and further improving the stability and reliability of the structure.

[0069] Optionally, each end of the second swing arm 22 is provided with two wheels 30, and the two pairs of wheels 30 are connected to the second swing arm 22 through the same axle 31. The transport vehicle needs to carry heavy objects such as goods, placing high demands on the load-bearing capacity of the wheels 30. The extension direction of the axle 31 is perpendicular to the length direction DL, and the wheels 30 are rotatably connected to the axle 31, meaning the rotation axis of the wheels 30 is perpendicular to the length direction DL. Providing two wheels 30 connected to the same axle 31 at each end of the second swing arm 22 effectively increases the number of contact points between the wheels 30 and the ground, allowing for a more even distribution of the weight of the vehicle and goods, improving the overall load-bearing capacity of the transport vehicle, and preventing damage to individual wheels 30 due to excessive force. The axle 31 is connected to the second swing arm 22 in the middle, with wheels 30 connected to its two ends. The axle 31 experiences relatively balanced force, and other connected components, such as the second swing arm 22, also experience more even force.

[0070] Furthermore, referring to Figure 5 The axle 31 has a connecting hole 32 extending along the length direction DL at its center, and the axle 31 is connected to the second swing arm 22 through the connecting hole 32. Optionally, this allows the two wheels 30 in a pair to swing relative to the second swing arm 22.

[0071] In some embodiments, the axle 31 and the second swing arm 22 are connected by a bearing, the axis of which is parallel to the length direction DL. Optionally, the bearing is a fixed bearing. The second swing arm 22 is provided with a bearing seat 221, and the two ends of the fixed bearing along its axial direction are respectively fixedly connected to the bearing seat 221. The fixed bearing is installed in the connecting hole 32 of the axle 31. Thus, the axle 31 can rotate about the axis of the fixed bearing and can slide slightly along the axis.

[0072] As described above, one second swing arm 22 corresponds to four wheels 30, one first swing arm 21 corresponds to eight wheels 30, and one set of balancing mechanisms 20 corresponds to eight wheels 30. Optionally, the transport vehicle is equipped with two sets of balancing mechanisms 20, that is, the transport vehicle is equipped with 16 wheels 30.

[0073] The transport vehicle also includes a traction mechanism 40, which is spaced apart from the balancing mechanism 20 along the length direction DL. Optionally, the traction mechanism 40 is located at the front end of the frame base 10, and the balancing mechanism 20 is located at the rear end of the frame base 10. During transportation, the traction mechanism 40 provides traction power at the front end, and the balancing mechanism 20 performs stabilization adjustment at the rear end. The cooperation between the two enables the transport vehicle to better adapt to different road conditions and ensure driving safety.

[0074] The following section, with reference to the accompanying diagram, explains the balancing mechanism of the transport vehicle under four special road conditions.

[0075] Reference Figure 6The road surface is convex in the middle and concave at both ends (arched road surface):

[0076] Because of the bulge in the middle of the road surface, the wheel 30 in the middle part of the width direction DW will be lifted up, while the wheels 30 on the left and right sides will sink due to the depression in the road surface. The axle 31 swings relative to the second swing arm 22, and the end of the axle 31 near the middle is higher than the end of the axle 31 away from the middle, so the frame base 10 can remain basically horizontal.

[0077] Reference Figure 7 The road surface is concave in the middle and convex at both ends (concave road surface):

[0078] Due to the depression in the middle of the road surface, the wheel 30 in the middle part of the width direction DW will sink, while the wheels 30 on the left and right sides will be raised due to the road surface bulge. The axle 31 swings relative to the second swing arm 22, and the end of the axle 31 near the middle is lower than the end of the axle 31 away from the middle, so the frame base 10 can remain basically horizontal.

[0079] Reference Figure 8 The road surface is either uphill or downhill (sloping road surface):

[0080] Due to the slope of the road surface, the first swing arm 21 swings around the first pivot 23 to adjust the angle of the wheel 30 to adapt to the slope by adapting the wheel 30 to the road surface. The second swing arm 22 swings around the second pivot 24 to automatically adjust the height according to the force on the front and rear wheels 30, ensuring that all wheels 30 remain in contact with the ground and that the frame base 10 can remain basically level.

[0081] Reference Figure 9 The road surface is convex in the middle and concave at both ends (wavy road surface):

[0082] The wheels 30 in the middle section along the length DL of the transport vehicle are lifted, while the front and rear wheels 30 sink due to the road surface depression. The first swing arm 21 swings up and down around the first pivot 23 to adapt to the middle protrusion. The second swing arm 22 independently adjusts the height of the front and rear wheels 30 to ensure that all wheels 30 can contact the ground and the frame base 10 can remain basically level.

[0083] The transport vehicle of this solution has two independent balancing mechanisms 20, so it has good balancing performance in both the aforementioned single road conditions and mixed road conditions.

[0084] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention. Terms such as “set” appearing herein can refer to either a component being directly attached to another component or a component being attached to another component via an intermediary. A feature described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0085] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this utility model to the described embodiments. Those skilled in the art will understand that many more variations and modifications can be made based on the teachings of this utility model, and all such variations and modifications fall within the scope of protection claimed by this utility model.

Claims

1. A transport vehicle for transporting goods, characterized in that, include: The vehicle frame base is used to support the cargo; Two sets of balancing mechanisms are spaced apart along the width direction of the vehicle frame base, and each set of balancing mechanisms includes: The first swing arm is swayably connected to the vehicle frame base via the first pivot. Two second swing arms are oscillatingly connected to the two ends of the first swing arm via a second pivot. The wheel assembly includes multiple sets of wheel train units corresponding to the number of second swing arms. Each set of wheel train units corresponds to one second swing arm. Each set of wheel train units includes two or four wheels, which are connected to the two ends of the second swing arms. The rotation axes of the first and second rotating shafts are parallel to each other and spaced apart along the length of the frame base.

2. The transport vehicle according to claim 1, characterized in that, In the projection onto a plane perpendicular to the width direction, in each set of the balancing mechanisms, the line connecting the rotation axes of the two second rotating shafts is not collinear with the rotation axis of the first rotating shaft.

3. The transport vehicle according to claim 2, characterized in that, Along the height direction of the frame base, the rotation axis of the first rotating shaft is located above the line connecting the rotation axes of the two second rotating shafts.

4. The transport vehicle according to any one of claims 1 to 3, characterized in that, The first swing arm includes a main body, which has an arc-shaped structure that is low in the middle and high at both ends, and the first pivot is connected to the middle of the main body.

5. The transport vehicle according to claim 4, characterized in that, The first swing arm further includes a connecting portion, two of which are respectively connected to the two ends of the main body, and the connecting portion extends downward from the main body, and the second rotating shaft is connected to the connecting portion.

6. The transport vehicle according to claim 4, characterized in that, The transport vehicle also includes a square box girder, which extends along the height direction of the frame base. The frame base is connected to the upper end of the square box girder, and the first pivot is connected to the lower end of the square box girder.

7. The transport vehicle according to claim 1, characterized in that, Two wheels are provided at each end of the second swing arm. The two wheels are connected to the second swing arm through the same axle. The extension direction of the axle is perpendicular to the length direction. The wheels are rotatably connected to the axle.

8. The transport vehicle according to claim 7, characterized in that, The axle has a connecting hole extending along the length direction in the middle, and the axle is connected to the second swing arm through the connecting hole.

9. The transport vehicle according to claim 8, characterized in that, The axle is connected to the second swing arm by a bearing, and the axis of the bearing is parallel to the length direction.

10. The transport vehicle according to any one of claims 1 to 3, 7 to 9, characterized in that, The transport vehicle also includes a traction mechanism, which is spaced apart from the balancing mechanism along the length direction.

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