A forklift-based packaging print material transport device

Abstract

This utility model relates to a forklift-based packaging and printing material transport device, belonging to the technical field of material transport devices. It includes a forklift, a fork arm mounted on the forklift, and the fork arm comprising a connecting arm, a fixed foot, a rotating arm, and a folding arm. The connecting arm is mounted on the forklift, and the fixed foot is located at the bottom end of the connecting arm. The rotating arm is rotatably mounted on the fixed foot via a rotating rod, facilitating rotation to parallel alignment with the forklift and allowing for complete retraction of the fork arm. The folding arm can be folded and stored at the end of the rotating arm furthest from the fixed foot, facilitating storage while extending the fork arm length and expanding the forklift's adaptability. This utility model, through its multi-segment movable design of the fork arm and the overlapping design of the rotating and folding arms, solves the problems of forklift fork arm length limitations and the malfunctions that easily occur with electronic telescopic rods, achieving flexible loading, efficient storage, and safe transport of diverse materials in the packaging and printing industry.

Description

Technical Field

[0001] This application relates to the field of material handling equipment technology, and in particular to a packaging and printing material handling device based on a forklift. Background Technology

[0002] Packaging and printing material transport devices are specialized material transfer equipment designed specifically for the entire production process of the packaging and printing industry. Their core function is to enable efficient, accurate, and damage-free transfer of printing-related materials between different processes and workstations. In the production context of the packaging and printing industry, most of them are based on traditional forklifts. These specialized material transfer devices are customized and improved to suit the material characteristics and production scenarios of the packaging and printing industry.

[0003] Currently, a Chinese utility model patent application, published on December 2, 2025, with publication number CN118992919B, discloses a omnidirectional mobile forklift, including a forklift body and a forklift beam. The inner side of the uprights of the forklift beam has a lifting groove, and a lifting rack is installed at the bottom of the groove. A forklift lifting power box is disposed between the two lifting racks. The forklift of this invention features a telescopic forklift design, consisting of a main forklift and a telescopic forklift. An electric telescopic rod is installed in the internal cavity of the main forklift, which can drive the telescopic forklift to extend and retract within the forklift mounting groove. In narrow spaces where the forklift body cannot enter, the forklift structure can be extended to access narrow passages for retrieving goods, effectively expanding the forklift's usability. Simultaneously, a lifting device mounting groove is provided on the bottom surface of the forklift, and a steering wheel lifting device is installed within the mounting groove, enabling the forklift to turn on the spot, facilitating movement and exiting in confined spaces.

[0004] In related technologies, omnidirectional forklifts rely on electric telescopic rods for their fork arm extension and retraction. While this design allows for basic fork arm length adjustment to accommodate materials of different sizes, in practical applications, the telescopic rod itself must be rigidly connected to the inside of the fork arm to transmit driving force. Due to the mechanical characteristics of the electric telescopic rod, its extension stroke has physical limits; the push rod cannot fully retract into the cylinder, typically retaining 30%-40% of its minimum extension length. This results in a significant portion of the fork arm extending laterally outside the frame even when unloaded and retracted, preventing it from fitting snugly against the frame for retraction. Furthermore, the electric telescopic rod is usually installed directly inside or outside the fork arm without protective design for the forklift's operating environment and stress characteristics, making it highly susceptible to damage during the transfer of packaging and printing materials.

[0005] Therefore, it is necessary to propose a forklift-based packaging and printing material transportation device to solve the above problems. Utility Model Content

[0006] This application provides a packaging and printing material transportation device based on a forklift. In order to improve the technical problems existing in the related technology, the fork arm extension function relies on the electric extension rod drive, which makes the electric extension rod easy to be damaged and cannot be fully stored, making it still inconvenient to move in a small space, and easily causing damage to the moving transported objects during the stopping process.

[0007] This application provides a packaging and printing material transportation device based on a forklift, including a forklift and a fork arm mounted on the forklift. The fork arm includes a connecting arm, a fixed foot, a rotating arm, and a folding arm.

[0008] The connecting arm is mounted on the forklift, and the fixed foot is mounted at the bottom end of the connecting arm;

[0009] The rotating arm is rotatably mounted on the fixed foot via a rotating rod, making it easy to rotate to be parallel with the forklift and to fully retract the fork arm.

[0010] The folding arm can be folded and stored on the end of the rotating arm away from the fixed foot, which facilitates storage while extending the length of the fork arm and expanding the adaptability of the forklift.

[0011] The technical solutions described above in this application embodiment have at least the following technical effects: by using a multi-segment movable design for the fork arm and by using a superimposed design of rotating and folding arms, the problems of fork arm length not being fully retractable and the malfunctions of using electronic telescopic rods are solved, thereby achieving flexible carrying, efficient storage, and safe transportation of diverse materials in the packaging and printing industry.

[0012] In this embodiment, the fork arms are symmetrically arranged at the left and right ends of the forklift, wherein the length of the left fixed leg is shorter than the length of the right fixed leg, so that the left and right rotating arms can be staggered and folded during the rotation and storage process.

[0013] This technical solution, through the symmetrical arrangement of the fork arms and the differentiated design of the left and right fixed feet, provides staggered storage space for the left and right rotating arms. It solves the problem of interference and inability to stack compactly when traditional symmetrical fixed-foot fork arms are rotated and stored. It ensures that the left and right rotating arms can be folded into a parallel state with the forklift without obstruction. While ensuring the load-bearing balance of the fork arms, it maximizes the compactness of storage and the convenience of operation.

[0014] In this embodiment, the folding arm is thicker at the end near the rotating arm and thinner at the end away from the rotating arm, which facilitates the folding arm's guiding function while reducing the overall weight of the fork arm.

[0015] This technical solution utilizes a gradually increasing thickness design for the folding arm, with a thicker near end and a thinner far end. This design achieves a precise match between structural strength and functional requirements. The thicker near end ensures the load-bearing reliability of the connection points, while the thinner far end facilitates guidance and reduces overall weight. Without sacrificing the load-bearing capacity of the fork arm, it simultaneously optimizes the efficiency of folding and unfolding operations, the safety of material handling, and the economy of forklift operations, perfectly adapting to the characteristics of packaging and printing material transportation scenarios.

[0016] In this embodiment, the fixed foot is also provided with a rotation limiting component to limit the angle of the rotating rod. The rotation limiting component includes two fixed rods symmetrically arranged on the fixed foot with the rotating rod as the central axis, and a rotating arm sleeved on the fixed rod. The end of the rotating arm near the rotating rod abuts against the outer wall of the rotating rod, and a spring-loaded member is provided between the ends of the two rotating arms away from the rotating rod.

[0017] This technical solution utilizes a mechanically coordinated structure of symmetrical fixed rods, rotating arms, and spring-loaded components to precisely and adaptively limit the rotation angle of the rotating rod in both directions. This ensures that the rotating arm maintains a stable angle during operation, preventing accidental rotation, while limiting excessive rotation during storage. Simultaneously, the spring-loaded components enable automatic reset and unlocking of the limit, solving the problems of cumbersome operation, unreliable limiting, and susceptibility to environmental influences associated with traditional limiting methods. This provides a safety guarantee for the stable load-bearing capacity and flexible storage of the fork arm.

[0018] In this embodiment, the outer wall of the rotating rod is provided with an array of abutment grooves to facilitate the abutment and limiting of the rotating arm.

[0019] This technical solution utilizes an array of abutment grooves on the outer wall of the rotating rod to form a precise, toothed engagement with the rotating arm of the rotation limiting component. By matching the abutment grooves with the end of the rotating arm, the traditional surface contact friction limiting is upgraded to point contact engagement limiting, enabling multi-position fixation of the rotating rod angle. This also enhances the impact resistance and stability of the limiting mechanism, solving the problems of insufficient flexibility in single-angle limiting and slippage in friction limiting. Furthermore, it optimizes the reliability and adaptability of the fork arm's deployment and storage.

[0020] In this embodiment, the spring-loaded component is a spring.

[0021] Through this technical solution, the embodiment of this application uses a spring as a rebound component. The core is to provide a stable and adjustable continuous preload for the two rotating arms of the rotation limit component, driving the rotating arms to always maintain the abutment and engagement state with the rotating rod and the abutment groove. At the same time, it realizes the force feedback operation of limit unlocking, ensuring the functional closed loop of automatic reset, precise engagement and convenient unlocking of the limit component, and adapting to the high-frequency deployment and storage operation requirements of the fork arm.

[0022] In this embodiment, a round handle is provided at the end of the rotating arm away from the rotating rod, which makes it easy for the operator to pinch the two rotating arms for operation.

[0023] Through this technical solution, a round handle is provided at the end of the rotating arm away from the rotating rod in this embodiment of the application. The core is to optimize the operator's control experience of the rotation limit component. By increasing the grip contact area and optimizing the force application angle, the difficulty of the rotating arm pinching operation is reduced, so as to realize the labor-saving, precise and safe limit unlocking, and ensure the efficient execution of the rotating arm unfolding, storage and gear switching operations. Attached Figure Description

[0024] Figure 1 A three-dimensional structural schematic diagram of a forklift-based packaging and printing material transport device provided in an embodiment of this application;

[0025] Figure 2 Schematic diagram of the three-dimensional structure of the fork arm in two states provided in the embodiments of this application Figure 2 ;

[0026] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0027] Figure 4 This is a three-dimensional structural diagram of a forklift-based packaging and printing material transport device provided in the embodiments of this application, showing two states of use.

[0028] The following are the labeling elements in the figure:

[0029] 1. Forklift; 2. Fork arm; 21. Connecting arm; 22. Fixed foot; 23. Rotating arm; 24. Folding arm; 25. Rotating rod; 251. Abutment groove; 3. Rotation limit assembly; 31. Fixed rod; 32. Rotating arm; 33. Springback component; 34. Round handle. Detailed Implementation

[0030] In related technologies, omnidirectional forklifts rely on electric telescopic rods for their fork arm extension and retraction. While this design allows for basic fork arm length adjustment to accommodate materials of different sizes, in practical applications, the telescopic rod itself must be rigidly connected to the inside of the fork arm to transmit driving force. Due to the mechanical characteristics of the electric telescopic rod, its extension stroke has physical limits; the push rod cannot fully retract into the cylinder, typically retaining 30%-40% of its minimum extension length. This results in a significant portion of the fork arm extending laterally outside the frame even when unloaded and retracted, preventing it from fitting snugly against the frame for retraction. Furthermore, the electric telescopic rod is usually installed directly inside or outside the fork arm without protective design for the forklift's operating environment and stress characteristics, making it highly susceptible to damage during the transfer of packaging and printing materials.

[0031] Based on this, in order to improve the technical problems existing in the related technology, such as the fork arm telescopic function relying on electric telescopic rod drive, which makes the electric telescopic rod easy to be damaged and unable to be fully stored, making it still inconvenient to move in a small space, and easily causing damage to the moving transported objects during the stopping process, the embodiments of this application provide the following solution.

[0032] Please refer to the following: Figures 1 to 4 This application provides a forklift-based packaging and printing material transport device, which includes a forklift 1 and a fork arm 2 mounted on the forklift 1. The fork arm 2 includes a connecting arm 21, a fixed foot 22, a rotating arm 23, and a folding arm 24.

[0033] The connecting arm 21 is mounted on the forklift 1, and the fixed foot 22 is mounted at the bottom end of the connecting arm 21;

[0034] The rotating arm 23 is rotatably mounted on the fixed foot 22 via the rotating rod 25, making it easy to rotate to be parallel with the forklift 1, so that the fork arm 2 can be completely retracted.

[0035] The folding arm 24 can be folded and stored on the end of the rotating arm 23 away from the fixed foot 22, which facilitates storage while extending the length of the fork arm 2 and expanding the adaptability of the forklift 1.

[0036] The packaging and printing material transport device based on a forklift provided in this application embodiment can extend the overall length of the forklift 2 by unfolding the folding arm 24. After folding, it can be stored at the end of the rotating arm 23 without additional disassembly of parts. At the same time, the rotating arm 23 is rotatably connected to the fixed foot 22 through the rotating rod 25, and can be rotated to a state parallel to the forklift 1, so that the forklift 2 can be completely stored, instead of the traditional fixed extended state. The extended forklift 2 can provide full-span support for long materials, avoiding deformation and damage caused by the material being suspended in the middle, and reducing the material loss rate. It saves space occupation. Packaging and printing warehouses often have problems with dense equipment and narrow aisles. After storage, the forklift 2 is parallel to the forklift 1, without occupying additional lateral space. The forklift 1 can flexibly shuttle between shelves and between equipment, improving the warehouse space utilization rate. At the same time, the rigid connection design between the connecting arm 21 and the fixed foot 22 ensures the overall load-bearing strength of the forklift 2, which can adapt to the transportation needs of heavier materials in the packaging and printing industry and avoid the reduction of load-bearing capacity due to the movable design of the forklift 2.

[0037] In this embodiment, the fork arms 2 are symmetrically arranged at the left and right ends of the forklift 1, wherein the length of the left fixed foot 22 is less than the length of the right fixed foot 22, so that the rotating arms 23 at the left and right ends can be folded and stored alternately during the rotation and storage process.

[0038] This design, with the symmetrical arrangement of the fork arms 2 and the differentiated lengths of the left and right fixed feet 22, provides staggered storage space for the left and right rotating arms 23. This solves the problem of interference and inability to stack compactly when rotating and storing traditional symmetrical fork arms 2 with equal-length fixed feet 22. It ensures that the left and right rotating arms 23 can be folded alternately and parallel to the forklift 1 without obstruction. While ensuring the load-bearing balance of the fork arms 2, it maximizes the compactness of storage and ease of operation. The left fixed foot 22 is shorter than the right, so that the mounting reference plane of the left rotating arm 23 is closer to the forklift 1 than the right. When the left and right rotating arms 23 rotate to be parallel to the forklift 1, they form a staggered space with the left inside and the right outside, avoiding overlap and collision on the same plane. It solves the storage pain point: if the left and right fixed feet 22 are of equal length, the left and right rotating arms 23 will collide with each other after rotation due to the flush mounting position, and cannot rotate to the fully stored state parallel to the forklift 1 at the same time. The length difference design allows the left and right rotating arms 23 to be stacked alternately, truly achieving full storage and avoiding storage failure due to interference.

[0039] In this embodiment, the folding arm 24 is thicker at the end near the rotating arm 23 and thinner at the end away from the rotating arm 23, which facilitates the folding arm 24 to play a guiding role while reducing the overall weight of the fork arm 2.

[0040] This design, with the folding arm 24 featuring a progressively thicker near end and a thinner far end, achieves a precise match between structural strength and functional requirements. The thicker near end ensures the load-bearing reliability of the connection points, while the thinner far end facilitates guidance and reduces overall weight. Without sacrificing the load-bearing performance of the fork arm 2, it simultaneously optimizes the efficiency of folding and unfolding operations, the safety of material handling, and the economic efficiency of forklift 1, perfectly adapting to the characteristics of packaging and printing material transportation scenarios.

[0041] In this embodiment, a rotation limiting component 3 is also provided on the fixed foot 22 to limit the angle of the rotating rod 25. The rotation limiting component 3 includes two fixed rods 31 symmetrically arranged on the fixed foot 22 with the rotating rod 25 as the central axis, and a rotating arm 32 sleeved and rotatably arranged on the fixed rods 31. The end of the rotating arm 32 near the rotating rod 25 abuts against the outer wall of the rotating rod 25, and a spring-loaded member 33 is provided between the ends of the two rotating arms 32 away from the rotating rod 25.

[0042] With this configuration, the two rotating arms 32, symmetrically arranged around the central axis of the rotating rod 25, remain in contact with the outer wall of the rotating rod 25 under the preload force of the spring-loaded component 33. When the rotating arm 23 rotates in the unfolding or folding direction, the rotating rod 25 drives the rotating arm 32 to rotate around the fixed rod 31 until it reaches a preset limit angle. At this point, the rotating arm 32 is blocked by the fixed rod 31 or the fixed foot 22 structure, forming a rigid limit to prevent the rotating rod 25 from rotating excessively. The spring-loaded component 33 provides a continuous opposing preload force to the two rotating arms 32, ensuring that the rotating arms 32... The rotating arm 23 is always in contact with the rotating rod 25. When the operator manually rotates the rotating arm 23, the circumferential force of the rotating rod 25 will overcome the preload of the spring-loaded component 33 and push the rotating arm 32 to rotate outward around the fixed rod 31 to achieve limit unlocking. When the rotating arm 23 reaches the preset angle, the spring-loaded component 33 drives the rotating arm 32 to automatically spring back and re-press against the rotating rod 25 to complete the limit. No additional manual locking is required. The preload of the spring-loaded component 33 can accurately match the operation requirements. The operator does not need to apply excessive force, reducing labor intensity. It is especially suitable for long-term operation scenarios.

[0043] In this embodiment, the outer wall of the rotating rod 25 is provided with an array of abutment grooves 251 to facilitate the abutment and positioning of the rotating arm 32.

[0044] With this design, the outer wall array of the rotating rod 25 has abutment grooves 251, which form a toothed and precise meshing limit with the rotating arm 32 of the rotation limit component 3. Through the engagement and matching of the abutment grooves 251 and the end of the rotating arm 32, the traditional surface contact friction limit is upgraded to point contact meshing limit, realizing multi-position fixation of the angle of the rotating rod 25. At the same time, it enhances the impact resistance and stability of the limit, solves the problems of insufficient flexibility of single angle limit and easy slippage of friction limit, and further optimizes the reliability and adaptability of the fork arm 2 when it is deployed and stored.

[0045] In this embodiment, the spring-loaded component 33 is a spring.

[0046] With this configuration, the spring used as the return element 33 in this embodiment is designed to provide a stable and adjustable continuous preload for the two rotating arms 32 of the rotation limit assembly 3, driving the rotating arms 32 to always maintain the abutment engagement with the rotating rod 25 and the abutment groove 251, while realizing the force feedback operation of limit unlocking, ensuring the functional closed loop of automatic reset, precise engagement and convenient unlocking of the limit assembly, and adapting to the high-frequency unfolding and storage operation requirements of the fork arm 2.

[0047] In this embodiment, a round handle 34 is provided at the end of the rotating arm 32 away from the rotating rod 25, which makes it convenient for the operator to pinch the two rotating arms 32 for operation.

[0048] With this configuration, a round handle 34 is provided at the end of the rotating arm 32 away from the rotating rod 25 in this embodiment of the application. The core purpose is to optimize the operator's control experience of the rotation limit component 3. By increasing the grip contact area and optimizing the force application angle, the difficulty of the rotating arm 32 pinching operation is reduced, so as to realize the labor-saving, precise and safe limit unlocking, and ensure the efficient execution of the rotation arm 23 unfolding, storage and gear switching operations.

[0049] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A forklift-based packaging and printing material transport device, comprising a forklift (1) and fork arms (2) mounted on the forklift (1), characterized in that: The fork arm (2) includes a connecting arm (21), a fixed foot (22), a rotating arm (23), and a folding arm (24). The connecting arm (21) is mounted on the forklift (1), and the fixed foot (22) is mounted at the bottom end of the connecting arm (21); The rotating arm (23) is rotatably mounted on the fixed foot (22) via the rotating rod (25), so that it can be rotated to be parallel to the forklift (1) and the fork arm (2) can be completely retracted; The folding arm (24) can be folded and stored on the end of the rotating arm (23) away from the fixed foot (22), which facilitates storage while extending the length of the fork arm (2) and expanding the range of adaptability of the forklift (1).

2. The packaging and printing material transport device based on a forklift according to claim 1, characterized in that: The fork arms (2) are symmetrically arranged at the left and right ends of the forklift (1), wherein the length of the left fixed foot (22) is less than the length of the right fixed foot (22), so that the rotating arms (23) at the left and right ends can be folded and stored in an alternating manner during the rotation and storage process.

3. The packaging and printing material transport device based on a forklift according to claim 1, characterized in that: The folding arm (24) is thicker at the end near the rotating arm (23) and thinner at the end away from the rotating arm (23), which makes it easier for the folding arm (24) to act as a guide while reducing the overall weight of the fork arm (2).

4. A forklift-based packaging and printing material transport device according to claim 1, 2, or 3, characterized in that: The fixed foot (22) is also provided with a rotation limiting component (3) to limit the angle of the rotating rod (25). The rotation limiting component (3) includes two fixed rods (31) symmetrically arranged on the fixed foot (22) with the rotating rod (25) as the central axis, and a rotating arm (32) sleeved and rotated on the fixed rod (31). The end of the rotating arm (32) close to the rotating rod (25) abuts against the outer wall of the rotating rod (25), and a spring-loaded component (33) is provided between the ends of the two rotating arms (32) away from the rotating rod (25).

5. A forklift-based packaging and printing material transport device according to claim 4, characterized in that: The outer wall of the rotating rod (25) is provided with an array of abutment grooves (251) to facilitate the abutment and limiting of the rotating arm (32).

6. A forklift-based packaging and printing material transport device according to claim 5, characterized in that: The spring-loaded component (33) is a spring.

7. A forklift-based packaging and printing material transport device according to claim 4, characterized in that: The rotating arm (32) is provided with a round handle (34) at the end away from the rotating rod (25), which makes it easy for the operator to squeeze the two rotating arms (32) to operate.

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