A transfer trolley capable of switching the placement state of a steel coil and a transfer device

Abstract

The utility model discloses a transfer trolley and transfer equipment can switch steel roll placement state, transfer trolley includes the car body, bearing device sets up on car body, bearing device is used for bearing steel roll, rotation device sets up on car body, rotation device with bearing device connects, rotation device is used for driving bearing device overturns relative car body to make the vertical state steel roll of placing on bearing device switches for horizontal state. The transfer equipment has applied above-mentioned transfer trolley.

Description

Technical Field

[0001] This utility model relates to the field of steel coil production technology, and in particular to a transfer trolley and transfer equipment that can switch the placement state of steel coils. Background Technology

[0002] In the steel coil production process, the transfer of steel coils between different processes (such as pickling, rolling, annealing, finishing, and storage) is an essential step. Due to the large volume and heavy weight of steel coils, traditional transfer methods mainly rely on large lifting equipment such as bridge cranes and overhead cranes. These devices use lifting tools (such as C-hooks) to lift, move, and place the vertically placed steel coils into designated locations, such as transport vehicles or saddles.

[0003] However, this traditional transfer method has significant drawbacks: First, large hoisting equipment itself has a large structure, requiring tall factory space and sturdy rail support, occupying a large area and incurring high infrastructure costs; second, it lacks flexibility, with fixed operating paths, making it difficult to achieve complex or flexible logistics scheduling; third, there is a risk of steel coil swaying during hoisting, requiring high positioning accuracy and posing significant pressure on operational safety; finally, when switching from vertical hoisting to horizontal storage or transportation, secondary handling or the use of a special turning platform is often required, which is cumbersome, inefficient, and increases the risk of equipment investment and collision damage. Utility Model Content

[0004] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a transfer trolley and transfer equipment with switchable steel coil placement states, which can integrate the functions of vertical receiving, state flipping (from vertical to horizontal), horizontal transportation and direct transfer in small workshops into one, eliminating the dependence on large fixed hoisting equipment.

[0005] In a first aspect, a transfer trolley with switchable steel coil placement states according to an embodiment of the present utility model includes: Vehicle body; A support device is mounted on the vehicle body and is used to support steel coils; A rotating device is installed on the vehicle body and connected to the carrying device. The rotating device is used to drive the carrying device to rotate relative to the vehicle body so that the steel coil placed on the carrying device in a vertical state is switched to a horizontal flat state.

[0006] A transfer trolley with switchable steel coil placement states according to an embodiment of the present invention has at least the following beneficial effects: By integrating the trolley body, the carrying device, and the rotating device into one unit, this application enables the steel coil to switch placement states during transfer without the need for external lifting equipment, thereby effectively avoiding the space occupation and cumbersome operation problems caused by traditional lifting equipment. The trolley body, as the basic mobile platform, provides flexible transfer capabilities, allowing the trolley to move freely within the production area, reducing reliance on fixed lifting equipment, thus saving workshop space and improving the adaptability of the transfer path. The carrying device, located on the trolley body, directly carries the steel coil, avoiding repeated lifting operations during the hoisting process, ensuring stable placement of the steel coil during transfer, and simplifying process connections. The rotating device, located on the trolley body and connected to the carrying device, rotates relative to the trolley body according to the driving action of the rotating device, thereby switching the vertical steel coil to a horizontal, flat position. This design allows the steel coil state transition to be completed directly on the transfer trolley without the need for additional lifting equipment, solving the problem of adjusting the posture of the steel coil between different processes, improving transfer efficiency, and reducing operational complexity.

[0007] According to an embodiment of the present invention, a transfer trolley with switchable steel coil placement states is provided. The carrying device includes a carrying frame and a plurality of carrying rollers disposed on the carrying frame. The axes of the plurality of carrying rollers are parallel to each other and are arranged at fixed intervals along the radial direction of the carrying frame.

[0008] According to an embodiment of the present invention, a transfer trolley with switchable steel coil placement states is provided. The support frame includes a first plate and a second plate. The first plate and the second plate are set at an included angle and fixedly connected. The support roller is disposed on the first plate, and the second plate can abut against the outer circumference of the steel coil.

[0009] According to an embodiment of the present invention, a transfer trolley with switchable steel coil placement states includes a rotating device comprising an active rotating mechanism and an auxiliary support mechanism. The output end of the active rotating mechanism is connected to the connection between the first plate and the second plate, and the active rotating mechanism is used to provide flipping power. The auxiliary support mechanism is disposed on the trolley body and is disposed on the same side as the second plate, and the output end of the auxiliary support mechanism is connected to the second plate. The auxiliary support mechanism is used to provide auxiliary support during the flipping process of the carrying device.

[0010] According to an embodiment of the present invention, a transfer trolley with switchable steel coil placement states is provided, wherein the auxiliary support mechanism is a hydraulic telescopic rod or a pneumatic telescopic rod.

[0011] According to an embodiment of the present invention, a transfer trolley with switchable steel coil placement states is provided, wherein the fixed end of the auxiliary support mechanism is rotatably connected to the trolley body.

[0012] According to an embodiment of the present invention, a transfer trolley with switchable steel coil placement states includes a carrying device that further includes a transmission mechanism. The transmission mechanism includes a first driving member, a driving gear, a driven gear, and a transmission belt meshing between the driving gear and the driven gear. The driving gear is disposed on the carrying roller located at the first end, and the driven gear is coaxially fixed with the carrying roller located at the end. The output shaft of the first driving member is connected to the driving gear to drive multiple carrying rollers to rotate synchronously.

[0013] According to an embodiment of the present invention, a transfer trolley with switchable steel coil placement states is provided, wherein the trolley body is a trailer or an automated guided vehicle.

[0014] Secondly, the transfer device according to the embodiments of the present utility model includes the transfer trolley described above, at least one of the transfer trolleys being a power trolley, and the carrying device on the power trolley being able to transfer the steel coil it carries to the carrying device of another transfer trolley docked with it.

[0015] The transfer device according to the embodiments of this utility model has at least the following beneficial effects: When a power trolley loaded with horizontally laid steel coils needs to dock with another empty transfer trolley, the two approach each other until their carrying devices are aligned, forming a continuous roller conveyor. At this time, the transmission mechanism on the power trolley is activated, driving its carrying rollers to rotate. Under the action of friction, the steel coil smoothly rolls from the carrying roller surface of the power trolley to the carrying roller surface of the docking trolley. The entire workflow can be summarized as: docking, starting the roller conveyor, and translation transfer, realizing the direct and seamless transfer of steel coils between different transport carriers. There is no need to use lifting equipment again for the "lifting-moving-lowering" operation, which greatly improves the transfer efficiency and reduces equipment dependence and collision risk.

[0016] According to the transfer device of this utility model embodiment, the carrying devices on the two docked transfer trolleys are at the same height and the roller conveyor directions are aligned to form a continuous transfer path.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a structural diagram of a transfer trolley with switchable steel coil placement states according to an embodiment of the present utility model; Figure 2This is a bottom view of a transfer trolley with switchable steel coil placement states according to an embodiment of the present utility model.

[0019] Explanation of reference numerals in the attached figures: Vehicle body 100; Supporting device 200; First plate 210; Second plate 220; Rotating device 300; auxiliary support mechanism 310; active rotating mechanism 320. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of a utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first" and "second" are used, they are merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or the order of the indicated technical features.

[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0024] Reference Figures 1 to 2This utility model provides a transfer trolley with switchable steel coil placement states, including a trolley body 100 constituting a mobile platform, a carrying device 200 for carrying the steel coil, and a rotating device 300 for driving the carrying device 200 to rotate. Rolling devices, such as drive wheels and steering wheels, are installed at the bottom of the trolley body 100, giving the trolley the ability to move freely on the ground. The carrying device 200 is hinged to the trolley body 100 via a pivot. The rotating device 300 is fixed to the trolley body 100, and its power output end is connected to the rotating structure of the carrying device 200, thereby driving the carrying device 200 to rotate at a large angle around the hinge axis.

[0025] Understandably, the trolley travels to the vertically stored steel coil and adjusts its position. Using an external lifting device, the vertical steel coil is lifted onto the carrying device 200, at which point the coil is in an upright position. Then, the rotating device 300 is activated. The rotating device 300 outputs rotational torque, driving the entire carrying device 200, along with the steel coil, to slowly rotate approximately 90 degrees. When the rotation is complete, the carrying device 200 becomes horizontal, its bearing surface parallel to the travel plane of the vehicle body 100, and the steel coil changes from an upright state to a stable horizontal position. Finally, the trolley can then carry the horizontally placed steel coil and travel to the next destination under its own power. This application integrates receiving, rotating, and transporting functions on a mobile platform, replacing the traditional relay operation of cranes and transport vehicles, significantly improving operational continuity and site adaptability.

[0026] According to some embodiments of this application, the support frame is constructed as an L-shaped structure including a first plate 210 and a second plate 220. The first plate 210 and the second plate 220 are arranged and fixedly connected at a certain included angle (usually a right angle). A support roller is disposed on the first plate 210, forming a support surface; while the second plate 220 can abut against its circumferential outer wall when the steel coil is placed vertically. When receiving the steel coil, the bottom of the vertical steel coil rests on the support roller of the first plate 210, and its side rests against the second plate 220. When the rotating device 300 is working, it drives the entire L-shaped support frame to rotate about its hinge axis with the vehicle body 100. During operation, the second plate 220 acts as a reliable backrest, constraining the steel coil in the initial stage of flipping to prevent it from tipping over. At the same time, the L-shaped structure forms a stable "corner," ensuring that the steel coil is always confined between the first plate 210 and the second plate 220 during the flipping process. This ensures the smoothness and safety of the flipping process, provides effective limiting and support for the steel coil during flipping, prevents the steel coil from slipping or deflecting, simplifies the design of the flipping mechanism, and improves operational reliability.

[0027] Understandably, the support frame is constructed in an L-shape, with a stable included angle formed by welding the first plate 210 and the second plate 220. Multiple support rollers are installed parallel and spaced apart on the first plate 210, forming a roller conveyor support surface. During the initial receiving of the steel coil, the bottom surface of the vertical steel coil rests on the support roller of the first plate 210, while its cylindrical side rests against the inner side of the vertically arranged second plate 220. The second plate 220 plays a crucial "backrest" role at this time, preventing the steel coil from tipping over at the moment of placement or when the trolley starts. When flipping, the active rotation mechanism 320 acts at the L-shaped corner to provide the main driving force. At the same time, the auxiliary support mechanism 310, such as a hydraulic telescopic rod, has its cylinder hinged to the trolley body 100, and its piston rod end hinged to the second plate 220. During the flipping process, the auxiliary support mechanism 310 moves synchronously, and its core function is "force support" and "movement stabilization". For example, when the load torque is at its maximum at the midpoint of the rotation angle, it can actively share most of the load torque, thereby significantly reducing the peak power requirement of the active rotation mechanism 320 and increasing the rigidity of the entire rotation system, suppressing vibration, and ensuring smooth and controllable movement. The L-shaped load-bearing frame, combined with the main and auxiliary drive, achieves safe, smooth, efficient, and economical state rotation of heavy loads through the envelope limiting and coordinated drive of the steel coil.

[0028] Furthermore, the bearing device 200 also includes a transmission mechanism. Specifically, the transmission mechanism includes a first driving element (such as a motor), a driving gear, a driven gear, and a transmission belt (such as a synchronous belt or chain) meshing between the driving gear and the driven gear. The driving gear is mounted on the bearing roller at the first end of the bearing roller arrangement direction, while the driven gear is coaxially fixed with the bearing roller at the last end. The output shaft of the first driving element drives the driving gear, and the power is transmitted to the driven gear through the transmission belt, thereby driving the first and last bearing rollers to rotate synchronously. Its working principle is that when all bearing rollers are synchronized through mechanical means (such as sprocket and chain linkage or gear set), driving the first and last rollers can drive the entire row of bearing rollers to rotate in the same direction and at the same speed. The function of the transmission belt is to transmit power over long distances and has buffering and overload protection capabilities.

[0029] Understandably, the transmission mechanism includes a geared motor as a power source. The motor's output shaft drives a drive gear. At the beginning and end of the load-bearing rollers, gears are mounted on the corresponding roller shafts. A closed synchronous toothed belt or chain meshes between these two gears. When it is necessary to move the steel coil axially on the load-bearing rollers, the motor is started. Power is transmitted from the drive gear to the end gear via the transmission belt, thereby driving the two main load-bearing rollers at the beginning and end to rotate synchronously. Since all load-bearing rollers are kept synchronized through a linkage mechanism (such as a short chain), the entire row of load-bearing rollers rotates at the same speed and direction. The rotating load-bearing rollers drive the steel coils on them to produce precise axial translation through friction, giving the trolley the ability to actively adjust or transfer loads while stationary. Its flexible layout and reliable transmission make it a key functional unit for achieving automated docking and transfer.

[0030] Furthermore, the rotating device 300 includes an active rotating mechanism 320 and an auxiliary support mechanism 310. The output end of the active rotating mechanism 320 is connected to the connection point (i.e., the L-shaped corner) between the first plate 210 and the second plate 220, providing the main tilting power. The auxiliary support mechanism 310 is mounted on the vehicle body 100 and located on the same side as the second plate 220, with its output end connected to the second plate 220. Its working steps and principle are as follows: When tilting is initiated, the active rotating mechanism 320 (e.g., a rotating cylinder or a motor-driven worm gear) acts as the main driving source, overcoming the gravitational torque of the steel coil and the bearing device 200, and begins to drive the bearing frame to rotate. Simultaneously, the auxiliary support mechanism 310 (e.g., a hydraulic telescopic rod) extends or retracts synchronously; its function is not to provide all the driving force, but rather to play a crucial auxiliary support and balancing role. It can share some of the load, especially when flipped to the middle angle and with the lever arm at its maximum, effectively reducing the load on the active rotating mechanism 320 and preventing overload. Simultaneously, it increases the stiffness of the flipping system, suppressing potential vibrations or impacts and ensuring a smoother and more controllable motion. The overall beneficial effect of this solution lies in achieving comprehensive optimization of force balance, motion stability, and mechanism safety during the flipping process of large-mass steel coils through the dual action of "active drive + auxiliary support."

[0031] Optionally, the auxiliary support mechanism 310 can be a hydraulic telescopic rod or a pneumatic telescopic rod. Specifically, the fixed end of the auxiliary support mechanism 310 can be rotatably connected to the vehicle body 100 by a hinge. While allowing the auxiliary support mechanism 310 to provide telescopic support, its connection angle with the vehicle body 100 and the second plate 220 can adaptively change, avoiding motion interference, ensuring the matching of the mechanism's degrees of freedom and the flipping trajectory, improving the flexibility and adaptability of the mechanism's movement, and reducing the additional stress caused by mechanical constraints.

[0032] According to some embodiments of this application, the vehicle body 100 is a trailer or an automated guided vehicle (AGV). A trailer can be towed by a tractor unit and is suitable for fixed routes or long-distance transportation; an AGV possesses automatic navigation and path planning capabilities and is suitable for flexible and intelligent production logistics systems. The bottom of the vehicle body 100 is equipped with rolling devices such as wheels or tracks. Their function is to provide the entire transfer vehicle with mobility, allowing it to move freely on the workshop floor. The beneficial effect of this solution is that it endows the transfer vehicle with extremely high flexibility and maneuverability, enabling it to directly reach various process points, achieving "door-to-door" transfer, and completely replacing cranes on fixed tracks.

[0033] As a preferred embodiment, to further enhance the fixing effect on the horizontally laid steel coil and prevent it from axially rolling or shifting due to inertia or vibration during transportation or docking, a pair of adjustable baffles can be added to the support frame. These two baffles are arranged opposite each other and can be movably connected to the support frame via a slide rail, lead screw, or manual locking mechanism.

[0034] Understandably, based on the width of the steel coil to be transferred, the positions of the two baffles in the axial direction of the carrying roller are adjusted beforehand or afterwards so that they are exactly or slightly larger than the width of the steel coil, and then locked in place. Its working principle is: two adjustable baffles form a physical barrier on both sides of the steel coil, confining it within a defined width space. Its specific functions are: first, to ensure the stability of the steel coil's position during subsequent transportation, improving safety; second, to guide the steel coil along a precise axial path during docking and transfer, preventing deviation and ensuring a high success rate of transfer. This greatly enhances the adaptability and versatility of the transfer trolley for steel coils of different specifications and sizes, while also strengthening the safety and accuracy of the entire transfer process.

[0035] In another embodiment, this application also provides a transfer device (not shown). The transfer device includes at least two of the aforementioned transfer trolleys. At least one is configured as a power trolley and one or more docking trolleys for receiving and transferring steel coils. When a power trolley loaded with a horizontally placed steel coil needs to dock with another empty transfer trolley, the two approach each other until their carrying devices 200 are aligned, forming a continuous roller conveyor. At this time, the transmission mechanism on the power trolley is activated, driving its carrying rollers to rotate. Under the action of friction, the steel coil smoothly rolls from the carrying roller surface of the power trolley to the carrying roller surface of the docking trolley. The entire workflow can be summarized as: docking, starting the roller conveyor, and translational transfer. The overall beneficial effect of this technical solution is that it realizes the direct and seamless transfer of steel coils between different transport carriers, eliminating the need for repeated "lifting-moving-lowering" operations using hoisting equipment, greatly improving transfer efficiency, and reducing equipment dependence and collision risks.

[0036] Furthermore, the height of the carrying devices 200 on the two docking transfer trolleys must be consistent, and the roller directions of all carrying rollers must be strictly aligned to form a smooth transition plane without steps or misalignment. This eliminates the jamming, bumps, or deviation that the steel coil may encounter during the transfer process, ensuring the stability, safety, and positioning accuracy of the steel coil's translational transfer.

[0037] Understandably, under the control system's scheduling, the unloaded docking trolley travels to the predetermined position. The powered trolley, loaded with horizontally laid steel coils, then travels to the adjacent position for precise docking. The key standard for docking is ensuring that the top surfaces of the load-bearing rollers on both trolleys are perfectly aligned, and that the axes of all load-bearing rollers are strictly aligned, thus forming a seamless, smooth, and continuous roller conveyor at the docking point. After docking, the transmission mechanism on the powered trolley is activated, driving its load-bearing rollers to rotate towards the docking trolley. Under the action of friction, the steel coil smoothly and continuously rolls from the roller conveyor surface of the powered trolley to the roller conveyor surface of the docking trolley. After the transfer is complete, the two trolleys can separate and each perform its subsequent tasks. The core working principle of this transfer equipment is "equipment docking" and "load sliding." Through the standardized load-bearing interfaces of the trolleys, it achieves a seamless physical connection between transport units and a direct horizontal transfer of the load. Its most prominent benefit is that it completely eliminates the need for hoisting operations using large lifting equipment at transfer nodes, making the entire transfer process safer, smoother, more efficient, and with lower noise, making it particularly suitable for high-frequency, process-oriented modern intelligent logistics systems.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A transfer trolley with switchable steel coil placement states, characterized in that, include: Vehicle body (100); A support device (200) is disposed on the vehicle body (100), and the support device (200) is used to support the steel coil; A rotating device (300) is disposed on the vehicle body (100). The rotating device (300) is connected to the carrying device (200). The rotating device (300) is used to drive the carrying device (200) to rotate relative to the vehicle body (100) so that the vertical steel coil placed on the carrying device (200) is switched to a horizontal flat state.

2. The transfer trolley with switchable steel coil placement states according to claim 1, characterized in that, The bearing device (200) includes a bearing frame and a plurality of bearing rollers disposed on the bearing frame, wherein the axes of the plurality of bearing rollers are parallel to each other and are arranged at fixed intervals along the radial direction of the bearing frame.

3. The transfer trolley with switchable steel coil placement states according to claim 2, characterized in that, The support frame includes a first plate (210) and a second plate (220), the first plate (210) and the second plate (220) are set at an angle and fixedly connected, the support roller is disposed on the first plate (210), and the second plate (220) can abut against the outer circumference of the steel coil.

4. A transfer trolley with switchable steel coil placement states according to claim 3, characterized in that, The rotating device (300) includes an active rotating mechanism (320) and an auxiliary support mechanism (310). The output end of the active rotating mechanism (320) is connected to the connection between the first plate (210) and the second plate (220). The active rotating mechanism (320) is used to provide the flipping power. The auxiliary support mechanism (310) is disposed on the vehicle body (100) and disposed on the same side as the second plate (220). The output end of the auxiliary support mechanism (310) is connected to the second plate (220). The auxiliary support mechanism (310) is used to provide auxiliary support during the flipping process of the bearing device (200).

5. A transfer trolley with switchable steel coil placement states according to claim 4, characterized in that, The auxiliary support mechanism (310) is a hydraulic telescopic rod or a pneumatic telescopic rod.

6. A transfer trolley with switchable steel coil placement states according to claim 5, characterized in that, The fixed end of the auxiliary support mechanism (310) is rotatably connected to the vehicle body (100).

7. A transfer trolley with switchable steel coil placement states according to any one of claims 2 to 6, characterized in that, The bearing device (200) further includes a transmission mechanism, which includes a first driving member, a driving gear, a driven gear, and a transmission belt meshing between the driving gear and the driven gear. The driving gear is disposed on the bearing roller located at the first end, and the driven gear is coaxially fixed with the bearing roller located at the end. The output shaft of the first driving member is connected to the driving gear to drive the multiple bearing rollers to rotate synchronously.

8. A transfer trolley with switchable steel coil placement states according to claim 1, characterized in that, The vehicle body (100) is a trailer or an automated guided vehicle.

9. A transfer device, characterized in that, The transfer trolley includes any one of claims 1 to 8, at least one of the transfer trolleys is a power trolley, and the carrying device (200) on the power trolley is capable of transferring the steel coil it carries to the carrying device (200) of another transfer trolley that is docked with it.

10. The transfer device according to claim 9, characterized in that, The carrying devices (200) on the two docked transfer trolleys are at the same height and the roller conveyor directions are aligned to form a continuous transfer path.

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