A loading platform device for quickly loading and unloading a material box

Abstract

The utility model relates to automatic warehousing equipment technical field especially, more particularly to a kind of quick take and place material box's loading platform device, technical scheme is as follows: mobile platform is used to carry out two-dimensional movement in vertical plane;Rotary support is rotatably arranged on mobile platform, and rotary support is provided with the receiving platform for receiving material box;Telescopic frame is arranged on rotary support, and the telescopic end end of telescopic frame is provided with the hooking and pulling component for hooking material box;Wherein, loading platform device is configured as: two-dimensional movement positioning to target material box position by mobile platform;Drive telescopic frame to elongate, make hooking and pulling component close and hook target material box;Drive telescopic frame to contract, and the target material box of hooking is pulled to receiving platform.The scheme has the advantages of efficient and accurate material box taking and placing, adapting to different angle placement, improving operation reliability.

Description

Technical Field

[0001] This utility model relates to the field of automated warehousing equipment technology, and in particular to a loading platform device for quickly picking up and placing material boxes. Background Technology

[0002] In modern automated warehousing, production line material handling, and e-commerce sorting centers, efficient and accurate storage and retrieval of bins is crucial for improving overall operational efficiency. Traditional bin handling devices suffer from several technical bottlenecks: fixed robotic arms are limited by their working radius and cannot cover densely packed storage areas; simple push-pull mechanisms lack multi-dimensional adjustment capabilities and cannot adapt to bins placed at different angles; and platforms moving in only one direction are prone to positioning deviations when operating in confined spaces. Especially when handling bins arranged at multiple angles, existing devices often fail to simultaneously achieve precise positioning, angle adaptation, and reliable gripping, resulting in cumbersome operation processes and low success rates.

[0003] While existing two-dimensional mobile platforms can achieve basic positioning, their mechanical structures lack rotational adjustment capabilities when dealing with non-oriented bins, forcing the system to perform complex path compensation. Conventional clamping mechanisms have stringent requirements for the flatness of the bin surface, while simple hook-and-loop devices suffer from three major drawbacks: first, inaccurate control of the extension stroke easily leads to excessive impact; second, the lack of a reliable engagement detection mechanism makes it prone to false engagement or disengagement; and third, the lack of a guiding structure during traction and retrieval allows the bin to easily shift on the mobile platform. These problems severely restrict operational efficiency in high-density storage environments and increase equipment maintenance costs.

[0004] A more pronounced problem lies in the bin retrieval process: traditional devices often employ rigid traction, which, lacking buffer structures and intelligent sensing systems, can lead to either excessive force damaging the bin handles or insufficient force preventing the bin from fully positioning when pulling it back to the support platform. Furthermore, existing support platforms are mostly fixed designs, unable to actively coordinate with the movement trajectory of the telescopic mechanism, increasing the difficulty of bin positioning. These technical deficiencies are particularly evident in high-frequency operation scenarios such as automated warehouses and intelligent sorting systems, becoming key bottlenecks restricting the performance improvement of logistics equipment. Summary of the Invention

[0005] To address the aforementioned problems, the present invention aims to provide a loading platform device for quickly picking up and placing material boxes, which has the advantages of efficient and accurate picking up and placing of material boxes, adaptability to different angles of placement, and improved operational reliability.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This application provides a loading platform device for quickly picking up and placing material boxes, the technical solution of which is as follows: a moving platform for two-dimensional movement in a vertical plane; a rotating bracket rotatably mounted on the moving platform, the rotating bracket having a receiving platform for receiving the material boxes; and a telescopic frame mounted on the rotating bracket, the telescopic end of the telescopic frame having a hook assembly for engaging the material boxes; wherein, the loading platform device is configured to: position itself to the target material box position through the two-dimensional movement of the moving platform; drive the telescopic frame to extend, so that the hook assembly approaches and engages the target material box; and drive the telescopic frame to retract, pulling the engaged target material box onto the receiving platform.

[0008] Furthermore, this application also proposes that the receiving platform is constructed as a sliding platform arranged along the telescopic direction of the telescopic frame; the receiving platform is provided with a platform opening on the extension side.

[0009] Furthermore, this application also proposes that the center of the rotating bracket is recessed downward to form a groove, and bosses are provided on both sides of the groove; baffles are provided on the outer edge of the bosses; and the top surface of the bosses between the two baffles forms a receiving platform.

[0010] Furthermore, this application also proposes that the baffle is provided with a guide plate on the side near the platform opening; the guide plates on both sides form an flared shape to guide the material box into the receiving platform.

[0011] Furthermore, this application proposes that the telescopic frame is constructed as a scissor lift; a guide rail and a telescopic drive assembly are provided in the groove; the rear end of the telescopic frame is connected to the rear end of the receiving platform; the front end or the lower end of the middle of the telescopic frame is slidably mounted on the guide rail by a slider; the telescopic drive assembly drives the slider to move on the guide rail to control the telescopic frame's extension and retraction.

[0012] Furthermore, this application also proposes that the telescopic drive assembly includes an annular belt and a drive motor; the annular belt is disposed in a groove via rollers and is parallel to the guide rail; the slider is fixedly connected to the annular belt; and the drive motor drives the annular belt to rotate cyclically.

[0013] Furthermore, this application also proposes that the hook assembly includes a hook; a first sensor is provided at the front end of the hook for detecting contact with the material box and feeding back a signal to the telescopic drive assembly to control the telescopic amount; a second sensor is provided inside the hook opening for detecting whether the hook is engaged with the material box.

[0014] Furthermore, this application also proposes that the hook assembly further includes a first contact plate disposed on the front side of the hook; the detection end of the first sensor abuts against the rear side of the first contact plate.

[0015] Furthermore, this application also proposes that the hook assembly further includes a second contact plate rotatably disposed inside the hook opening; the detection end of the second sensor is located in the rotation path of the second contact plate; when the handle of the material box is engaged in the hook opening, the second contact plate is pressed down to trigger the second sensor.

[0016] As can be seen from the above, the loading platform device for quickly picking up and placing material boxes provided in this application, as well as its rotating bracket and hook assembly, is positioned to the target material box position through the two-dimensional movement of the mobile platform. The telescopic frame is driven to extend so that the hook assembly can engage the material box and then retract to pull it to the receiving platform. Combined with the steering adjustment function of the rotating bracket, it effectively solves the problems of large positioning deviation and poor angle adaptability of traditional devices. It has the advantages of efficient and accurate picking up and placing of material boxes, adaptability to different angle placement, and improved operational reliability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram illustrating the usage state of a loading platform device provided in this application.

[0018] Figure 2 This is a structural schematic diagram of a cargo platform device provided in this application.

[0019] Figure 3 The present application provides a schematic diagram of the hook and pull assembly. 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 intended 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 terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] In existing technologies, in automated warehousing, production line material handling, and e-commerce sorting scenarios, bin storage and retrieval devices generally suffer from insufficient operational flexibility and limited positioning accuracy. Traditional devices rely on fixed robotic arms or unidirectional moving platforms, which are difficult to adapt to bins arranged at multiple angles in densely packed shelving. For example, when the bin's placement angle deviates from the device's preset direction, existing devices need to repeatedly adjust their movement path, which can easily lead to positioning deviations or mechanical interference, resulting in retrieval failures or reduced efficiency.

[0026] To address the aforementioned issues, considering the existing device's inability to actively adjust the gripping direction and the lack of a flexible traction mechanism, the design approach shifted to integrating a multi-dimensional motion mechanism. First, a two-dimensional moving platform 1 was used for basic positioning, but it was found that it could not cover all material box angles; therefore, a rotating bracket 2 was introduced to expand the direction adjustment capability. Second, the traditional push-pull mechanism has a fixed stroke, making it difficult to adapt to material boxes at different distances. Therefore, a telescopic frame 3, in conjunction with a hook-pull assembly 4, was used to enable the device to actively extend to the target position and reliably retrieve the material box. Ultimately, a collaborative system consisting of mobile positioning, rotational orientation adjustment, and telescopic gripping was formed.

[0027] like Figure 1-3 As shown, this embodiment relates to a loading platform device for quickly picking up and placing material boxes, including: a mobile platform 1 for two-dimensional movement in a vertical plane; a rotating bracket 2 rotatably mounted on the mobile platform 1, which is provided with a receiving platform 21 for receiving material boxes; a telescopic frame 3 mounted on the rotating bracket 2, with a hook assembly 4 at its telescopic end; the device is configured to, after being positioned by the mobile platform 1, drive the telescopic frame 3 to extend so that the hook assembly 4 engages with the material box, and then retract and pull it to the receiving platform 21.

[0028] The mobile platform 1 refers to a base capable of two-dimensional movement in a vertical plane, which can be implemented using a combination of a slide table with guide rails and a drive motor, providing basic positioning capabilities for the device. The rotating bracket 2 refers to a support structure that can rotate around the mobile platform 1, with angle adjustment achieved through bearings or gear transmission, allowing the receiving platform 21 and hook assembly 4 to adapt to different orientations of the material box. The telescopic frame 3 refers to a robotic arm structure with adjustable length, such as a scissor-type or hydraulically driven multi-section arm, used to actively extend the hook assembly 4 to the target material box position. The hook assembly 4 refers to an end effector, such as a hook 41 with a sensor, which achieves reliable gripping through contact detection and engagement confirmation.

[0029] Specifically, after the mobile platform 1 moves vertically and horizontally to the vicinity of the target bin, the rotating bracket 2 adjusts its angle so that the hook assembly 4 is directly facing the bin. The telescopic frame 3 extends to push the hook assembly 4 into contact with the bin, triggering a sensor to confirm the position and complete the engagement. Subsequently, the telescopic frame 3 retracts, smoothly pulling the bin into place along the opening of the receiving platform 21. The receiving platform 21, as the traction endpoint, has a sliding design that buffers the bin's inertia and prevents skewing. The two-dimensional positioning of the mobile platform 1 and the angle adjustment of the rotating bracket 2 work together to cover bins at different positions and angles, while the active extension and retraction of the telescopic frame 3 compensates for the shortcomings of the fixed-stroke mechanism. Through the above technical solution, this application solves the problems of positioning deviation and poor traction when grabbing bins at multiple angles. The rotating bracket 2 allows the device to adapt to bins facing different directions, reducing the complexity of the path planning of the mobile platform 1. The telescopic frame 3 actively extends the hook assembly 4, reducing the dependence on the positioning accuracy of the mobile platform 1 and avoiding mechanical interference. During the traction process, the sliding design of the receiving platform 21 ensures that the bin is smoothly positioned and prevents jamming. This solution significantly improves the success rate of first-time retrieval and placement in dense shelving scenarios, reduces repetitive operation time, and is suitable for high-paced automated operation environments.

[0030] In a specific implementation, the receiving platform 21 is constructed as a sliding platform arranged along the telescopic direction of the telescopic frame 3, and the receiving platform 21 has a platform opening 211 on the extension side. The sliding platform refers to the guide structure arranged along the telescopic direction of the telescopic frame 3, which can be implemented using a planar structure with linear guide rails or grooves. Its function is to constrain the material box to slide only along a single axis during the pulling process. The platform opening 211 refers to the through notch set at the front end of the sliding platform, which can be implemented using a rectangular or trapezoidal opening structure. Its function is to prevent mechanical interference between the hook assembly 4 and the edge of the platform when it extends or retracts. Specifically, when the telescopic frame 3 performs the extension action, the hook assembly 4 extends outward through the platform opening 211 to ensure that the extension path is unobstructed. When the material box is pulled by the hook assembly 4, the bottom of the material box contacts the surface of the sliding platform and slides along the direction of the guide rail 31. The side walls of the sliding platform form physical limits on both sides of the material box to prevent lateral deviation. After the material box enters the opening area, its movement trajectory is forcibly corrected by the sliding platform to be parallel to the extension direction until it completely enters the platform bearing area.

[0031] like Figure 2 In the specific embodiment shown, the central part of the rotating bracket 2 is recessed to form a groove 22. Bosses 23 are provided on both sides of the groove 22, and baffles 24 are provided on the outer edges of the bosses 23. The top surface of the bosses 23 between the two baffles 24 forms a receiving platform 21. The groove 22 refers to the space formed by the downward recess in the central part of the rotating bracket 2, which can be achieved by stamping or welding. It is used to accommodate the telescopic frame 3 and its driving components, preventing interference with the movement path of the material box. The bosses 23 refer to the supporting structures extending upward from both sides of the groove 22. They can be implemented using metal plates integrally formed with the rotating bracket 2, and their top surfaces serve as the supporting surfaces for the sliding contact of the material box, providing a reference plane for the movement of the material box. The baffles 24 refer to the vertical limiting structures provided on the outer edges of the bosses 23. They can be implemented using bolted metal plates, forming lateral constraint channels through the two baffles 24, limiting the lateral displacement of the material box during movement.

[0032] Specifically, the design of the groove 22 provides installation space for the telescopic frame 3 and its drive components, preventing collisions between the telescopic movement and the material box's recovery trajectory. The top surfaces of the protrusions 23 on both sides of the groove 22 form the support surface of the receiving platform 21, and the bottom of the material box slides along this support surface when it is pulled. Baffles 24 are perpendicular to the support surface and positioned at the outer edge of the protrusions 23, forming symmetrical guide walls on both sides. When the material box is pulled into the receiving platform 21, the baffles 24 physically restrict the lateral displacement of the material box. During the pulling process, the bottom of the material box remains in continuous contact with the top surface of the protrusions 23, and the baffles 24 on both sides synchronously guide the material box to move along a straight path, thereby eliminating the risk of skewing due to inertia or uneven force. Through the above technical solution, this application solves the problem of skewing caused by the lack of lateral constraint during the pulling process of the material box, ensuring that the material box always maintains contact with the support surface during movement, and forcibly corrects the offset through the guiding effect of the baffles 24 on both sides, ultimately ensuring that the material box accurately reaches the predetermined position of the receiving platform 21.

[0033] Furthermore, a guide plate 241 is provided on the side of the baffle 24 near the platform opening 211, forming a flared shape between the two guide plates 241 to guide the material box into the receiving platform 21. The guide plate 241 refers to an inclined structure on the opening side of the baffle 24, which can be achieved by stamping and bending a metal sheet to form a sloping surface. Its inclination angle is configured to contact and guide the movement trajectory of the material box. The flared shape means that the distance between the two guide plates 241 gradually decreases along the material box's entry direction. This can be achieved by symmetrically setting two outwardly expanding inclined plates, whose flaring angle is configured to cover the material box's positional deviation range. When the telescopic frame 3 pulls the material box towards the receiving platform 21, the side of the material box first contacts the inclined surface of the guide plate 241. As the material box continues to move, the inclined surface applies a lateral guiding force to the material box, forcing the material box to gradually adjust its position along the contraction direction of the flared shape. During this process, the flared structure allows for position compensation through the inclined surface contact when the material box initially has a lateral offset, ultimately aligning the centerline of the material box with the axis of the receiving platform 21. This guiding mechanism prevents the material box from directly impacting the edge of the baffle 24 due to deviations in the traction angle, while eliminating the cumulative error in the material box's movement path through progressive position correction.

[0034] like Figure 2As shown, this embodiment further proposes a technical solution including a scissor lift as a telescopic frame 3, a guide rail 31 and a telescopic drive assembly disposed within the groove 22, the rear end of the telescopic frame 3 being connected to the rear end of the receiving platform 21, and the lower end of the front or middle part of the telescopic frame 3 being slidably mounted on the guide rail 31 via a slider 33. The telescopic drive assembly drives the slider 33 to move to control the telescopic movement of the telescopic frame 3. Here, the scissor lift refers to a foldable support formed by multiple sets of cross-links hinged together, specifically a four-bar or six-bar hinge structure, achieving telescopic movement by changing the cross angle. The guide rail 31 refers to a metal track with a linear guide surface, specifically a T-slot guide rail or a cylindrical guide rail, providing a linear sliding path for the slider 33. The slider 33 refers to a sliding component that cooperates with the guide rail 31, specifically a sliding seat with balls or rollers, ensuring smooth movement along the guide rail 31. The telescopic drive assembly refers to a power mechanism that outputs linear motion, specifically a synchronous belt drive, gear rack, or hydraulic cylinder, used to precisely control the displacement of the slider 33.

[0035] Specifically, the scissor lift is fixed to the receiving platform 21 at its rear end via a multi-link hinge structure, while its front end is slidably connected to the guide rail 31 via a slider 33. When the telescopic drive assembly pushes the slider 33 to move along the guide rail 31, the angle of the cross linkage of the scissor lift changes, causing the front hook assembly 4 to extend outward or retract inward. The guide rail 31 constrains the sliding path of the slider 33, ensuring that the scissor lift maintains a linear motion trajectory during deployment, preventing offset caused by excessive freedom at the hinge point. The fixed connection at the rear end forms a stable fulcrum, ensuring that the traction force is transmitted to the receiving platform 21 along the scissor lift axis, preventing lateral forces from being generated during telescopic movement. This structure allows for precise adjustment of the scissor lift's telescopic stroke by controlling the displacement of the slider 33 through a single drive source, enabling a wide range of telescopic movements within a limited space.

[0036] Furthermore, the telescopic drive assembly includes an annular belt 321 and a drive motor. The annular belt 321 is set in the groove 22 by rollers and is parallel to the guide rail 31. The slider 33 is fixedly connected to the annular belt 321. The drive motor drives the annular belt 321 to rotate cyclically. The annular belt 321 is a closed-loop transmission component made of flexible material, specifically a rubber synchronous belt or a steel chain. Its arrangement parallel to the guide rail 31 ensures that the direction of the driving force transmission is consistent with the telescopic direction of the telescopic frame 3. The drive motor is an actuator that outputs rotational power, specifically a servo motor or a stepper motor. The displacement of the annular belt 321 can be precisely adjusted by controlling the rotation angle and speed of the motor. The slider 33 is a moving component that forms a sliding engagement with the guide rail 31, specifically a metal block with linear bearings. Its fixed connection to the annular belt 321 converts the cyclic motion of the annular belt 321 into linear displacement. The guide rail 31 refers to the guiding structure that defines the movement path. Specifically, it can be implemented using a surface-hardened linear guide rail. Its arrangement parallel to the annular belt 321 eliminates lateral offset during transmission. Specifically, the annular belt 321 forms a closed-loop transmission path through a roller assembly, and the drive motor drives the annular belt 321 to rotate cyclically via the drive rollers. When the annular belt 321 rotates clockwise or counterclockwise, the slider 33 fixed to it moves synchronously with the belt, thereby generating linear displacement along the guide rail 31. The movement of the slider 33 causes a positional change at the front or middle of the telescopic frame 3, thus controlling the expansion or contraction of the telescopic frame 3. Because the annular belt 321 and the guide rail 31 are arranged parallel, the direction of the driving force transmission is always consistent with the extension / contraction direction of the telescopic frame 3, avoiding energy loss during transmission. By precisely controlling the number of rotations of the annular belt 321, the drive motor can achieve millimeter-level precision adjustment of the slider 33's displacement, thereby ensuring the positioning accuracy of the hook assembly 4 at the end of the telescopic frame 3.

[0037] like Figure 3As shown, the hook assembly 4 includes a hook 41. A first sensor 42 is provided at the front end of the hook 41 to detect contact with the material box and send a signal to the telescopic drive assembly to control the telescopic amount. A second sensor 43 is provided inside the hook opening of the hook 41 to detect whether the hook 41 is engaged with the material box. The first sensor 42 is a sensing element located at the front end of the hook 41 to detect contact with the material box. It can be implemented using a contact microswitch or a photoelectric sensor. When the front end of the hook 41 contacts the material box, the first sensor 42 triggers a signal and transmits it to the control system, causing the telescopic drive assembly to stop extending, thus avoiding mechanical interference or positioning deviation due to over-extension. The second sensor 43 is a sensing element located inside the hook opening to detect whether the material box handle is engaged. It can be implemented using a pressure sensor or a position sensor. When the material box handle is fully inserted into the hook opening and presses against the sensor, the second sensor 43 outputs a confirmation signal to ensure a valid engagement and prevent the material box from falling off during traction due to incomplete engagement.

[0038] Specifically, as the hook 41 moves towards the target material box, the first sensor 42 monitors the contact state between the front end of the hook 41 and the material box in real time. Once contact is detected, a feedback signal is immediately sent, causing the telescopic drive assembly to stop operating, thus achieving precise control of the telescopic amount. When the hook 41 engages with the material box handle, the handle enters the hook and triggers the second sensor 43. The traction action can only be initiated after the engagement is confirmed. Through the closed-loop control of the first sensor 42 and the telescopic drive assembly, positioning errors and the risk of mechanical interference are eliminated; the second sensor 43 verifies the engagement state a second time, ensuring the stability of the material box during traction.

[0039] In the specific design, the hook assembly 4 also includes a first contact plate 44 located in front of the hook 41, with the detection end of the first sensor 42 pressing against the rear side of the first contact plate 44. The first contact plate 44 is a plate-like structure installed at the front end of the hook 41 and in direct contact with the material box. It can be made of metal or engineering plastic and fixed to the front of the hook 41 by bolts or welding, used to transmit the contact force of the material box to the sensor. The front surface of the first contact plate 44 can be designed as a flat or curved surface to accommodate different shaped material boxes, while the rear side forms a pressing relationship with the sensor detection end, ensuring that the first contact plate 44 generates a displacement that can be detected by the sensor when subjected to external force. When the first contact plate 44 is pressed backward by the material box, the sensor detection end senses the displacement or pressure change and outputs a signal, triggering the telescopic drive assembly to stop or adjust the telescopic amount. Specifically, when the front end of the hook 41 approaches the material box, the first contact plate 44 preferentially contacts the surface of the material box, and the reaction force of the material box pushes the first contact plate 44 backward, with the rear side of the first contact plate 44 pressing against the detection end of the first sensor 42. The sensor converts displacement or pressure changes into electrical signals, which are fed back to the telescopic drive assembly to control the telescopic frame 3 to stop extending or fine-tune its position. The first contact plate 44 serves as an intermediate force transmission component, preventing the sensor from directly bearing external impacts. At the same time, it eliminates signal fluctuations caused by unevenness or vibration on the surface of the material box through mechanical transmission, ensuring the stability and accuracy of contact detection.

[0040] The hook assembly 4 also includes a second contact plate 45 rotatably disposed inside the hook opening of the hook 41. The detection end of the second sensor 43 is located in the rotation path of the second contact plate 45. When the handle of the material box is engaged in the hook opening, the second contact plate 45 is pressed down to trigger the second sensor 43. The second contact plate 45 is a plate-like structure installed inside the hook opening of the hook 41 that can rotate around an axis. Specifically, it can be implemented using a hinge or a rotating shaft in conjunction with a torsion spring reset mechanism, used to be pressed down and generate rotational displacement when the handle of the material box is engaged. The rotation path refers to the spatial trajectory traversed by the second contact plate 45 during the force-driven rotation. Specifically, the rotation angle can be controlled by adjusting the position of the rotating shaft and the shape of the contact plate to ensure that the displacement of the contact plate accurately triggers the sensor.

[0041] Specifically, when the handle of the material box enters the hook 41, the handle contacts the second contact plate 45 and applies pressure, forcing the second contact plate 45 to rotate downwards around the axis. The rotational displacement of the contact plate causes its end to enter the detection range of the second sensor 43, triggering the sensor to generate a confirmation signal. If the handle is not fully engaged or is not securely engaged, the contact plate cannot rotate to the trigger position, and the sensor remains in an untriggered state. At this time, the system can determine that the engagement has failed and perform error correction. By combining the mechanical linkage of the contact plate with sensor detection, the actual contact state between the handle and the hook 41 can be directly reflected, avoiding the risk of detachment during the traction process due to incomplete engagement or misjudgment.

[0042] In some specific embodiments, the second contact plate 45 can be designed as an L-shaped structure, with its short side extending into the hook opening for contacting the handle, and a protrusion at the end of its long side to precisely align with the sensor detection end. A rotating shaft can be installed in the middle of the contact plate, and a torsion spring provides a restoring force to ensure the contact plate automatically returns to its original position after the handle is disengaged. The sensor can be a waterproof and dustproof microswitch, with its contacts maintaining a preset gap with the contact plate protrusion, closing the circuit only when the contact plate is fully depressed. Through the above technical solution, this application achieves accurate detection of the material box's engagement state, effectively preventing traction detachment or positioning deviation problems caused by loose engagement. The mechanical linkage mechanism between the contact plate and the sensor can accurately identify whether the handle is fully engaged in the hook opening, providing a reliable start confirmation signal for subsequent traction actions, thereby improving the stability and safety of the entire loading and unloading process.

[0043] In summary, the loading platform device for quickly picking up and placing material boxes provided in this application, along with its rotating bracket 2 and hook assembly 4, positions the device to the target material box position through the two-dimensional movement of the moving platform 1. The telescopic frame 3 is then driven to extend, causing the hook assembly 4 to engage the material box and retract to pull it to the receiving platform 21. Combined with the steering adjustment function of the rotating bracket 2, this effectively solves the problems of large positioning deviation and poor angle adaptability of traditional devices. It has the advantages of efficient and accurate picking up and placing of material boxes, adaptability to different angle placement, and improved operational reliability.

[0044] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "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.

[0045] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A loading platform device for quickly picking up and placing material boxes, characterized in that, include: - A mobile platform (1) for two-dimensional movement in a vertical plane; - A rotating bracket (2) is rotatably mounted on the moving platform (1), and the rotating bracket (2) is provided with a receiving platform (21) for receiving the material box; - Telescopic frame (3), which is set on the rotating bracket (2), and the telescopic end of the telescopic frame (3) is provided with a hook and pull assembly (4) for locking the material box; -The loading platform device is configured as follows: - Position the device to the target material box location by two-dimensional movement of the mobile platform (1); - Drive the telescopic frame (3) to extend, so that the hook assembly (4) approaches and engages with the target material box; - Drive the telescopic frame (3) to retract, and pull the target box to the receiving platform (21).

2. The loading platform device for quickly picking up and placing material boxes according to claim 1, characterized in that: - The receiving platform (21) is constructed as a sliding platform arranged along the telescopic direction of the telescopic frame (3); -The receiving platform (21) is provided with a platform opening (211) on the extending side.

3. The loading platform device for quickly picking up and placing material boxes according to claim 2, characterized in that: - The center of the rotating bracket (2) is recessed downward to form a groove (22), and protrusions (23) are provided on both sides of the groove (22); - A baffle (24) is provided on the outer edge of the boss (23); - The top surface of the boss (23) between the two side baffles (24) forms the receiving platform (21).

4. The loading platform device for quickly picking up and placing material boxes according to claim 3, characterized in that: -The baffle (24) is provided with a guide plate (241) on the side near the platform opening (211); - An flared shape is formed between the two guide plates (241) to guide the material box into the receiving platform (21).

5. The loading platform device for quickly picking up and placing material boxes according to claim 3, characterized in that: -The telescopic frame (3) is constructed as a scissor lift; -A guide rail (31) and a telescopic drive assembly are provided inside the groove (22); -The rear end of the telescopic frame (3) is connected to the rear end of the receiving platform (21); - The lower end of the front end or middle part of the telescopic frame (3) is slidably mounted on the guide rail (31) by a slider (33); - The telescopic drive assembly drives the slider (33) to move on the guide rail (31) to control the telescopic frame (3) to extend and retract.

6. The loading platform device for quickly picking up and placing material boxes according to claim 5, characterized in that: - The telescopic drive assembly includes an annular belt (321) and a drive motor; - The annular belt (321) is set in the groove (22) by rollers and is parallel to the guide rail (31); - The slider (33) is fixedly connected to the annular belt (321); -The drive motor drives the annular belt (321) to rotate cyclically.

7. A loading platform device for quickly picking up and placing material boxes according to any one of claims 1-6, characterized in that: - The hook assembly (4) includes a hook (41); - The front end of the hook (41) is provided with a first sensor (42) for detecting contact with the material box and feeding back a signal to the telescopic drive assembly to control the telescopic amount; - A second sensor (43) is provided inside the hook opening of the hook (41) to detect whether the hook (41) is stuck in the material receiving box.

8. A loading platform device for quickly picking up and placing material boxes according to claim 7, characterized in that: - The hook assembly (4) further includes a first contact plate (44) located on the front side of the hook (41); - The detection end of the first sensor (42) presses against the rear side of the first contact plate (44).

9. A loading platform device for quickly picking up and placing material boxes according to claim 7, characterized in that: - The hook assembly (4) further includes a second contact plate (45) that is rotatably disposed inside the hook opening of the hook (41); - The detection end of the second sensor (43) is located in the rotation path of the second contact plate (45); - When the handle of the material box is engaged in the hook, the second contact plate (45) is pressed down to trigger the second sensor (43).

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