Empty container automatic recovery device

Abstract

The utility model discloses an empty box automatic recovery device relates to the automatic technology field of logistics, wherein, empty box automatic recovery device includes empty box suction device, empty box stacking device, empty tray transport trolley, empty box transport trolley and control system, and empty box suction device includes receiving platform and suction mechanism, and empty box stacking device includes conveying mechanism, transfer platform and stacking shelf, and empty tray transport trolley includes first mobile mechanism and transport platform, and empty box transport trolley includes second mobile mechanism and transport shelf. The utility model discloses the technical scheme of each device under the unified scheduling of control system cooperation operation has realized empty box and empty tray's synchronous automatic recovery and recycling, whole process does not need artificial drag, pushcart or stoop and put, effectively solved the technical problem of low operating efficiency and great labor intensity in the manual recovery process, significantly improved operating efficiency, reduced personnel intervention, realized the continuous and automation of recovery process.

Description

Technical Field

[0001] This utility model relates to the field of logistics automation technology, and in particular to an automatic empty box recycling device. Background Technology

[0002] In the production and logistics system of air conditioning products, the packaging boxes used to hold indoor or outdoor air conditioning units are reusable logistics tools. Their recycling efficiency and operation methods directly affect the production line's operating rhythm and personnel safety. After air conditioning products are delivered and unpacked, these empty packaging boxes need to be systematically recycled and transported back to the factory for reuse in subsequent production. However, current recycling processes generally suffer from low operational efficiency, high labor intensity, and significant waste of time. In particular, the transfer of empty boxes from the recycling station to the storage or reuse area is highly dependent on manual operation, making it difficult to achieve continuous and automated flow, which has become a bottleneck restricting the upgrading of intelligent manufacturing. Utility Model Content

[0003] The main purpose of this invention is to propose an automatic empty box recycling device, which aims to solve the problems of low work efficiency and excessive labor intensity in the process of manually recycling empty boxes.

[0004] To achieve the above objectives, this utility model proposes an automatic empty container recycling device, which includes: An empty carton retrieval device includes a receiving platform and a retrieval mechanism. The retrieval mechanism is movably mounted on the receiving platform and is used to move empty cartons from the retrieval position to the receiving platform. An empty carton stacking device includes a conveying mechanism, a transfer platform, and a stacking rack. The conveying mechanism is located between a receiving platform and the transfer platform, with its inlet end abutting against the outlet end of the receiving platform to allow the receiving platform to move the empty carton to the conveying mechanism. The transfer platform is located on the side of the conveying mechanism away from the receiving platform and is movably mounted on the stacking rack. The transfer platform is used to move the empty carton from the outlet end of the conveying mechanism to the stacking rack. An empty pallet transport trolley includes a first moving mechanism and a transport platform. The first moving mechanism is located at the bottom of the transport platform, and the transport platform is used to move empty pallets from an empty pallet rack to an empty box slide rail. An empty container transport trolley includes a second moving mechanism and a transport rack. The second moving mechanism is located at the bottom of the transport rack, and the transport rack is used to move the empty container from the stacking rack to the empty pallet on the empty container slide rail. The control system includes an absorption mechanism, a receiving platform, a transfer platform, a first moving mechanism, a transport platform, and a second moving mechanism, all of which are electrically connected to the control system.

[0005] In one embodiment, the suction mechanism includes a suction cup, a first driving component, and a second driving component. The first driving component is movably mounted on the receiving platform so that it can move relative to the receiving platform along a first direction. The second driving component is movably mounted on the first driving component so that it can move relative to the first driving component along a second direction. The suction cup is connected to the second driving component and is used to pick up empty boxes from the box retrieval position. The suction cup can move the empty boxes from the box retrieval position to the receiving platform via the second driving component and the first driving component. The first direction and the second direction are perpendicular to each other.

[0006] In one embodiment, the transfer platform includes a third drive component, a fourth drive component, and a platform body. The third drive component is movably mounted on the stacking rack so that it can move relative to the stacking rack in a first direction. The fourth drive component is movably mounted on the third drive component so that it can move relative to the third drive component in a second direction. The platform body is connected to the fourth drive component, and the platform body can move the empty box from the discharge end of the conveying mechanism to the stacking rack via the fourth drive component and the third drive component. Both the third drive component and the fourth drive component are electrically connected to the control system. The first direction and the second direction are perpendicular to each other.

[0007] In one embodiment, the transfer platform further includes a fifth drive component, which is movably mounted on the platform body to allow the fifth drive component to move relative to the platform body along a third direction, thereby moving the empty box from the platform body to the stacking rack. The fifth drive component is electrically connected to the control system. The first direction, the second direction, and the third direction are perpendicular to each other.

[0008] In one embodiment, the empty box stacking device further includes a clamping mechanism electrically connected to the control system and connected to the transfer platform. The platform body is provided with a transfer position. The clamping mechanism is used to move the empty box to the transfer position. The fifth drive component is capable of moving the empty box from the transfer position to the stacking rack. And / or, The feed end of the conveying mechanism is higher than the discharge end of the conveying mechanism.

[0009] In one embodiment, the stacking rack includes at least one layer of guide rails, each guide rail being provided with at least one stacking station, each stacking station being used to carry the empty box.

[0010] In one embodiment, the feeding end of each guide rail is higher than the discharge end of the corresponding guide rail, and the discharge end of the guide rail is also provided with a stop. The stop is electrically connected to the control system. The stop is used to restrict or allow the empty box to move from the guide rail to the handling rack. The number of stops is consistent with the number of stacking stations and they are set one-to-one.

[0011] In one embodiment, the control system includes a first control module, a second control module, a third control module, and a fourth control module. The suction mechanism and the receiving platform are both electrically connected to the first control module. The second control module is disposed on the stacking rack, and the transfer platform, the first control module, and the third control module are all electrically connected to the second control module. The third control module is disposed on the handling rack, and the second moving mechanism is electrically connected to the third control module. The first moving mechanism and the handling platform are both electrically connected to the fourth control module.

[0012] In one embodiment, the empty box retrieval device further includes a first sensing mechanism, which is used to detect whether there is an empty box at the retrieval position, and the first sensing mechanism is electrically connected to the first control module; And / or, The handling rack is equipped with a first position detection mechanism, a first displacement detection mechanism, and a sixth drive component. The first position detection mechanism, the first displacement detection mechanism, and the sixth drive component are all electrically connected to the third control module. The first position detection mechanism is used to detect whether the handling rack is in contact with the stacking rack or the empty box slide rail. The first displacement detection mechanism is used to realize the autonomous movement, precise positioning, and safe obstacle avoidance of the second moving mechanism. The sixth drive component can move the empty box from the handling rack to the empty pallet on the empty box slide rail. And / or, The transport platform is equipped with a second position detection mechanism, a second displacement detection mechanism, and a second sensing mechanism. Both the second position detection mechanism and the second displacement detection mechanism are electrically connected to the fourth control module. The second sensing mechanism is used to detect whether the transport platform has an empty box. The second position detection mechanism is used to detect whether the transport platform is in contact with the empty pallet rack or the empty box slide rail. The second displacement detection mechanism is used to enable the first moving mechanism to move autonomously, accurately position itself, and safely avoid obstacles.

[0013] In one embodiment, the receiving platform is provided with a first electric roller, which can drive the empty box to move to the conveying mechanism; And / or, The transfer platform is equipped with a second electric roller. And / or, The transport platform is equipped with a third electric roller, which can drive the empty pallet to move to the empty box slide rail; And / or, The stacking rack is equipped with a first status indicator light, which is electrically connected to the control system. And / or, The handling rack is equipped with a second status indicator light, which is electrically connected to the control system. And / or, The transport platform is equipped with a third status indicator light, which is electrically connected to the control system.

[0014] In this embodiment of the invention, the automatic empty carton recycling device includes an empty carton suction device, an empty carton stacking device, an empty pallet transport trolley, an empty carton transport trolley, and a control system. The empty carton suction device, through a suction mechanism movably mounted on the receiving platform, automatically grabs and transfers empty cars that slide down the conveyor chain to the carton retrieval position to the receiving platform, achieving initial positioning and concentration of the empty cars. During this process, after the empty carton arrives at the carton retrieval position via the conveyor chain, the suction mechanism picks up the empty carton, separating it from the empty pallet on the conveyor chain, thus completing the automatic recycling of the empty carton. The empty pallet on the conveyor chain remains on the conveyor chain, continuing to run with the conveyor chain and being pushed to the actual cargo loading channel, awaiting reloading of the air conditioner cargo, thereby achieving automatic separation of empty cars and empty pallets on the conveyor chain. In the empty box stacking device, the inlet end of the conveyor mechanism abuts against the outlet end of the receiving platform, receiving empty boxes and transporting them to a transfer platform. The transfer platform is movably installed on the stacking rack. By moving along the stacking rack, it transfers empty boxes from the outlet end of the conveyor mechanism to the stacking rack for orderly stacking, completing the centralized storage of empty boxes. An empty pallet handling trolley, driven by a first moving mechanism located at the bottom of the handling platform, autonomously transports empty pallets from the empty pallet rack to the front of the empty box slide rail, achieving automatic replenishment of empty pallets. A second moving mechanism located at the bottom of the handling rack drives the handling rack autonomously. After docking with the stacking rack, it receives stacked empty boxes and transports them to the empty box slide rail. The empty boxes are then pushed into the empty pallets provided by the empty pallet handling trolley on the empty box slide rail, completing the automatic combination of empty boxes and empty pallets. This design achieves synchronous automatic recycling and reuse of empty boxes and empty pallets, improving overall operational efficiency, reducing manual intervention, and lowering operational risks. The aforementioned suction mechanism, receiving platform, transfer platform, first moving mechanism, handling platform, and second moving mechanism are all electrically connected to the control system and operate collaboratively under the unified scheduling of the control system. This structure automatically grabs empty boxes through the suction mechanism, replacing the tedious manual dragging of empty boxes one by one to the handling trolley, reducing ineffective movements and waste; the transfer platform transfers empty boxes to stacking racks for centralized stacking, avoiding manual scattered handling and sorting; the empty pallet handling trolley and empty box handling trolley respectively achieve automatic replenishment of empty pallets and intelligent transfer of empty boxes, replacing the physical exertion of manually pushing heavy-duty trolleys back and forth over long distances, significantly improving operational efficiency; the handling rack directly pushes empty boxes into empty pallets on the empty box slide rails, allowing the empty boxes to slide down and complete the combination with the empty pallets. The entire process requires no manual intervention, especially avoiding the repeated bending and stooping required when stacking double-layer empty pallets. In the context of tight production cycles and high recycling frequency in air conditioning manufacturing, this fundamentally eliminates occupational health risks such as lumbar muscle strain and intervertebral disc damage caused by frequent bending. This automated process optimization not only improves work efficiency but also significantly reduces the probability of injuries caused by frequent bending over, thus enhancing work safety.Meanwhile, under the coordination of the control system, each device forms a continuous closed-loop operation from empty box pickup, stacking, and transfer to automatic combination with empty pallets. This solves the problems of fragmented operations, low efficiency, and high human risk caused by the lack of automatic grabbing, intelligent transfer, and precise placement mechanisms in traditional recycling processes. It realizes unmanned, continuous, and automated empty box recycling, effectively improving the operating cycle of the production line and the recycling efficiency of logistics equipment. In addition, the structure of each device can be assembled from standard aluminum alloy parts, which has the characteristics of stable structure, light weight, and corrosion resistance, and is easy to disassemble and maintain, meeting the high requirements of smart factories for equipment reliability and convenience. This utility model embodiment uses a pickup mechanism to automatically grab empty boxes on the conveyor chain and transfer them to the receiving platform, realizing the separation of empty boxes from empty pallets on the conveyor chain and the automatic recycling of empty boxes. After stacking and transfer, the empty boxes are sent to the empty box slide rail by the empty box transport trolley, and automatically combined with the empty pallets automatically transported from the empty pallet rack to the front end of the empty box slide rail by the empty pallet transport trolley. Under the unified scheduling of the control system, all devices work together to realize the synchronous automatic recycling and reuse of empty boxes and empty pallets. The entire process does not require manual dragging, pushing, or bending over to stack, effectively solving the technical problems of low work efficiency and high labor intensity in the manual recycling process, significantly improving work efficiency, reducing human intervention, and realizing the continuity and automation of the recycling process. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of an embodiment of the automatic empty box recycling device of this utility model; Figure 2 This is a schematic diagram of the structure of an embodiment of the empty box suction device of the automatic empty box recycling device of this utility model; Figure 3 This is a schematic diagram of the structure of an embodiment of the empty box stacking device of the automatic empty box recycling device of this utility model; Figure 4 This is a schematic diagram of the structure of an embodiment of the empty box transport trolley of the automatic empty box recycling device of this utility model; Figure 5 This is a schematic diagram of the structure of an embodiment of the empty pallet transport trolley of the automatic empty box recycling device of this utility model.

[0017] Explanation of icon numbers: 100. Automatic empty box recycling device; 1. Empty box suction device; 11. Receiving platform; 111. First electric roller; 12. Suction mechanism; 121. Suction cup; 122. First drive assembly; 123. Second drive assembly; 2. Empty box stacking device; 21. Conveying mechanism; 22. Transfer platform; 221. Third drive assembly; 222. Fourth drive assembly; 223. Platform body; 2231. Second electric roller; 224. Fifth drive assembly; 23. Stacking rack; 231. Guide rail; 2311. Stacking station; 24. 1. Status indicator light; 3. Empty pallet transport trolley; 31. First moving mechanism; 32. Transport platform; 321. Third electric roller; 33. Second position detection mechanism; 34. Second displacement detection mechanism; 35. Third status indicator light; 4. Empty box transport trolley; 41. Second moving mechanism; 42. Transport rack; 43. First position detection mechanism; 44. First displacement detection mechanism; 45. Second status indicator light; 46. Sixth drive assembly; 5. Control system; 51. Second control module; 52. Third control module; 200, Empty box; 300, Empty pallet; 400, Conveyor chain; 410, Box retrieval position; 500, Empty box slide rail.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0020] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, and back), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0022] In the production and logistics system of air conditioning products, the packaging boxes used to hold indoor or outdoor air conditioning units are reusable logistics tools. Their recycling efficiency and operation methods directly affect the production line's operating rhythm and personnel safety. After air conditioning products are delivered and unpacked, these empty packaging boxes need to be systematically recycled and transported back to the factory for reuse in subsequent production. However, current recycling processes generally suffer from low operational efficiency, high labor intensity, and significant waste of time. In particular, the transfer of empty boxes from the recycling station to the storage or reuse area is highly dependent on manual operation, making it difficult to achieve continuous and automated flow, which has become a bottleneck restricting the upgrading of intelligent manufacturing.

[0023] After careful investigation, the applicant discovered that after empty air conditioner packaging boxes are transported to the recycling area via a conveyor chain, they typically slide onto the operating rails, where on-site personnel manually drag them one by one into the transport trolleys. Subsequently, workers must push the fully loaded trolleys back and forth between the recycling point and the empty box storage area, unloading the empty boxes from the trolleys in the storage area and transporting and stacking them one by one onto double-layered empty pallets. This work mode leads to multiple problems: First, workers must frequently push heavily loaded trolleys back and forth over long distances, generating a large amount of non-value-added movement, resulting in a waste of time and energy; second, because the pallets are designed with a double layer to improve space utilization, workers must repeatedly bend over when stacking empty boxes onto the bottom pallet. Under the tight production cycle of air conditioners and the high frequency of empty box recycling, the number of times one bends over per unit time is extremely high, and long-term fatigue can easily lead to occupational health problems such as lumbar muscle strain and intervertebral disc damage. Ultimately, the problem lies in the lack of automated grabbing and transfer mechanisms. The separation, collection, handling, and stacking of empty containers rely entirely on manual labor. There are no sensor systems to detect and automatically locate empty containers, no actuators to grab and detach them, and no autonomous mobile equipment to intelligently transfer and accurately place them. Furthermore, replenishing empty pallets also depends on manual handling. These fragmented operations fail to form a continuous automated loop, resulting in inefficient overall recycling processes, high human-caused risks, and an inability to meet the operational needs of modern smart factories.

[0024] The main purpose of this invention is to propose an automatic empty box recycling device to solve the problems of low work efficiency and excessive labor intensity in the process of manually recycling empty boxes.

[0025] Please see Figures 1 to 3In one embodiment of this utility model, the automatic empty carton recycling device 100 includes an empty carton suction device 1, an empty carton stacking device 2, an empty pallet transport trolley 3, an empty carton transport trolley 4, and a control system 5. The empty carton suction device 1 includes a receiving platform 11 and a suction mechanism 12. The suction mechanism 12 is movably installed on the receiving platform 11 and is used to move the empty carton 200 on the carton retrieval position 410 to the receiving platform 11. The empty carton stacking device 2 includes a conveying mechanism 21, a transfer platform 22, and a stacking rack 23. The conveying mechanism 21 is located between the receiving platform 11 and the transfer platform 22. The feeding end of the conveying mechanism 21 abuts against the discharging end of the receiving platform 11 so that the receiving platform 11 can move the empty carton 200 to the conveying mechanism 21. The transfer platform 22 is located on the side of the conveying mechanism 21 away from the receiving platform 11. The transfer platform 22 is movably installed on the stacking rack 23. The transfer platform 22 is used to move the empty box 200 from the discharge end of the conveying mechanism 21 to the stacking rack 23. The empty pallet 300 handling trolley includes a first moving mechanism 31 and a handling platform 32. The first moving mechanism 31 is located at the bottom of the handling platform 32. The handling platform 32 is used to move the empty pallet 300 from the empty pallet rack to the empty box slide rail 500. The empty box handling trolley 4 includes a second moving mechanism 41 and a handling rack 42. The second moving mechanism 41 is located at the bottom of the handling rack 42. The handling rack 42 is used to move the empty box 200 from the stacking rack 23 to the empty pallet 300 on the empty box slide rail 500. The suction mechanism 12, receiving platform 11, transfer platform 22, first moving mechanism 31, handling platform 32 and second moving mechanism 41 are all electrically connected to the control system 5.

[0026] In the embodiments of this utility model, such as Figure 2As shown, the first direction is left-right, the second direction is up-down, and the third direction is front-back. Empty container 200 can be used to hold materials; in this embodiment, the material is an air conditioner. The automatic empty container recycling device 100 includes an empty container suction device 1, an empty container stacking device 2, an empty pallet handling trolley 3, an empty container handling trolley 4, and a control system 5. The empty box suction device 1 automatically grabs and transfers the empty box 200 that slides from the conveyor chain 400 to the box retrieval position 410 to the receiving platform 11 via the suction mechanism 12, which is movably installed on the receiving platform 11, thus achieving the initial positioning and concentration of the empty box 200. During this process, after the empty box 200 is transported to the box retrieval position 410 via the conveyor chain 400, the suction mechanism 12 picks up the empty box 200 and separates it from the empty pallet 300 on the conveyor chain 400, thereby completing the automatic recycling of the empty box 200. The empty pallet 300 on the conveyor chain 400 remains on the conveyor chain 400 and continues to run with the conveyor chain 400 and is pushed to the actual goods loading channel, waiting to be reloaded with the actual air conditioner goods, thus achieving the automatic diversion of the empty box 200 and the empty pallet 300 on the conveyor chain 400. In the empty box stacking device 2, the feeding end of the conveying mechanism 21 abuts against the discharging end of the receiving platform 11, receiving empty boxes 200 and conveying them to the transfer platform 22. The transfer platform 22 is movably installed on the stacking rack 23. By moving on the stacking rack 23, it transfers the empty boxes 200 from the discharging end of the conveying mechanism 21 to the stacking rack 23 for orderly stacking, completing the centralized storage of empty boxes 200. The empty pallet handling trolley 3 drives the handling platform 32 to operate autonomously through the first moving mechanism 31 set at the bottom of the handling platform 32, transporting empty pallets 300 from the empty pallet rack to the front end of the empty box slide rail 500, realizing the automatic replenishment of empty pallets 300. The empty box transport trolley 4, driven by a second moving mechanism 41 located at the bottom of the transport rack 42, autonomously operates the transport rack 42. After docking with the stacking rack 23, it receives stacked empty boxes 200 and transports them to the empty box slide rail 500. The empty boxes 200 are then pushed onto the empty pallet 300 provided by the empty pallet transport trolley 3 on the empty box slide rail 500, completing the automatic combination of the empty boxes 200 and the empty pallet 300. This design achieves synchronous automatic recycling and reuse of empty boxes 200 and empty pallets 300, improving overall operational efficiency and reducing manual intervention and operational risks. The aforementioned suction mechanism 12, receiving platform 11, transfer platform 22, first moving mechanism 31, transport platform 32, and second moving mechanism 41 are all electrically connected to the control system 5 and operate collaboratively under the unified scheduling of the control system 5.This structure automatically grabs empty boxes 200 through the suction mechanism 12, replacing the tedious manual operation of dragging empty boxes 200 one by one to the transport trolley, reducing ineffective movements and waste; the transfer platform 22 transfers the empty boxes 200 to the stacking rack 23 for centralized stacking, avoiding manual scattered handling and sorting; the empty pallet transport trolley 3 and the empty box transport trolley 4 respectively realize the automatic replenishment of empty pallets 300 and the intelligent transfer of empty boxes 200, replacing the physical consumption of manually pushing heavy-duty trolleys back and forth for long distances, significantly improving work efficiency; the transport rack 42 directly pushes the empty boxes 200 into the empty pallets 300 on the empty box slide rail 500, so that the empty boxes 200 slide down to complete the combination with the empty pallets 300. The whole process does not require manual intervention, especially avoiding the operation of repeatedly bending over when stacking the bottom layer of double-layer empty pallets 300. Under the tight production cycle and high recycling frequency of air conditioning production, it fundamentally eliminates occupational health risks such as lumbar muscle strain and intervertebral disc damage caused by high frequency of bending over. This automated process optimization not only improves operational efficiency but also significantly reduces the probability of injuries caused by frequent bending over, enhancing work safety. Simultaneously, under the coordination of the control system 5, each device forms a continuous closed-loop operation from the collection, stacking, and transfer of empty containers 200 to their automatic combination with empty pallets 300. This solves the problems of fragmented operations, low efficiency, and high human risk caused by the lack of automatic grasping, intelligent transfer, and precise placement mechanisms in traditional recycling processes. It achieves unmanned, continuous, and automated empty container 200 recycling, effectively improving the production line's operating cycle time and the recycling efficiency of logistics equipment. Furthermore, the structure of each device can be assembled using standard aluminum alloy parts, featuring a stable structure, light weight, and corrosion resistance, facilitating disassembly and maintenance, and meeting the high requirements of smart factories for equipment reliability and convenience.

[0027] The technical solution of this utility model uses a suction mechanism 12 to automatically grab empty boxes 200 from the conveyor chain 400 and transfer them to the receiving platform 11, thereby separating the empty boxes 200 from the empty pallets 300 on the conveyor chain 400 and automatically recycling the empty boxes 200. After stacking and transfer, the empty boxes 200 are sent by the empty box handling trolley 4 to the empty box slide rail 500, where they are automatically combined with the empty pallets 300 that are automatically transported from the empty pallet rack to the front of the empty box slide rail 500 by the empty pallet handling trolley 3. Under the unified scheduling of the control system 5, all devices work together to achieve synchronous automatic recycling and reuse of empty boxes 200 and empty pallets 300. The entire process does not require manual dragging, pushing, or bending over to stack, effectively solving the technical problems of low work efficiency and high labor intensity in manual recycling, significantly improving work efficiency, reducing human intervention, and realizing the continuity and automation of the recycling process.

[0028] Please see Figure 2In one embodiment, the suction mechanism 12 includes a suction cup 121, a first driving component 122, and a second driving component 123. The first driving component 122 is movably mounted on the receiving platform 11 so that the first driving component 122 can move relative to the receiving platform 11 in a first direction. The second driving component 123 is movably mounted on the first driving component 122 so that the second driving component 123 can move relative to the first driving component 122 in a second direction. The suction cup 121 is connected to the second driving component 123 and is used to pick up empty boxes 200 on the box position 410. The suction cup 121 can... The second drive assembly 123 and the first drive assembly 122 move the empty box 200 on the box retrieval position 410 to the receiving platform 11. The first and second directions are perpendicularly arranged. Specifically, this structure uses the first drive assembly 122 to realize the positioning and movement of the suction cup 121 in the first direction, and the second drive assembly 123 to realize the lifting and lowering action of the suction cup 121 in the second direction. The two are perpendicular to each other and linked for control, so that the suction cup 121 can accurately align with the slide rail of the conveyor chain 400 to grab the empty box 200 and place it smoothly on the receiving platform 11, completing the automatic transfer of the empty box 200 from the conveyor chain 400 to the recycling system. This achieves precise grabbing and positioning of the empty box 200, avoiding the waste of action and operation delay caused by manual dragging, and improving the automation level and operational stability of the separation and recycling of the empty box 200. In addition, in this embodiment, both the first drive assembly 122 and the second drive assembly 123 can be cylinders, hydraulic cylinders, linear modules or electric telescopic rods, and this embodiment does not limit them.

[0029] Please see Figure 3In one embodiment, the transfer platform 22 includes a third drive assembly 221, a fourth drive assembly 222, and a platform body 223. The third drive assembly 221 is movably mounted on the stacking rack 23 so that the third drive assembly 221 can move relative to the stacking rack 23 in a first direction. The fourth drive assembly 222 is movably mounted on the third drive assembly 221 so that the fourth drive assembly 222 can move relative to the third drive assembly 221 in a second direction. The platform body 223 is connected to the fourth drive assembly 222, and the platform body 223 can transfer empty boxes 222 through the fourth drive assembly 222 and the third drive assembly 221. The empty box 200 moves from the discharge end of the conveyor mechanism 21 to the stacking rack 23. Both the third drive assembly 221 and the fourth drive assembly 222 are electrically connected to the control system 5. The first and second directions are perpendicularly aligned. Specifically, the structure uses the third drive assembly 221 to achieve positioning and movement of the platform body 223 in the first direction, and the fourth drive assembly 222 to achieve lifting and lowering of the platform body 223 in the second direction. These two directions are perpendicular and linked, allowing the platform body 223 to accurately move to the area below the discharge end of the conveyor mechanism 21 to receive material, and then move to the corresponding level of the stacking rack 23 to release material, completing the automatic stacking of the empty box 200. This achieves precise transfer of the empty box 200 from the conveyor mechanism 21 to the stacking rack 23, replacing manual handling and stacking operations, avoiding frequent bending and heavy physical labor, improving the automation level, operating efficiency, and positioning accuracy of the stacking operation, while ensuring neat and orderly stacking for subsequent centralized transfer. In addition, in this embodiment, both the third drive component 221 and the fourth drive component 222 can be cylinders, hydraulic cylinders, linear modules or electric telescopic rods, and this embodiment does not limit them.

[0030] Please see Figure 3In one embodiment, the transfer platform 22 further includes a fifth drive component 224, which is movably mounted on the platform body 223 so that the fifth drive component 224 can move relative to the platform body 223 along a third direction, thereby moving the empty box 200 from the platform body 223 to the stacking rack 23. The fifth drive component 224 is electrically connected to the control system 5. The first direction, the second direction, and the third direction are perpendicular to each other. Specifically, the fifth drive component 224 pushes the empty box 200 laterally from the platform body 223 to the stacking rack 23 along the third direction. This structure, through the pushing action of the fifth drive component 224, achieves precise docking of the empty box 200 with the stacking station 2311, avoiding jamming or collisions caused by positioning errors of the platform body 223, and ensuring that the empty box 200 enters the stacking position smoothly and reliably. Meanwhile, the three-way linkage design enables the transfer platform 22 to have complete spatial positioning and feeding capabilities. It can complete the unloading action solely through the fifth drive component 224 without moving the overall position of the platform, improving operational accuracy and safety. This achieves fully automatic, precise, and stable transfer of empty containers 200 from the conveyor mechanism 21 to the stacking rack 23, effectively replacing manual handling and stacking, reducing the physical exertion and operational risks for workers under high-density work cycles, and improving the automation level and operational efficiency of empty container stacking. Furthermore, in this embodiment, the fifth drive component 224 can be a cylinder, hydraulic cylinder, linear module, or electric telescopic rod; this embodiment is not limited to this.

[0031] Please see Figure 3In one embodiment, the empty box stacking device 2 further includes a clamping mechanism (not shown), which is electrically connected to the control system 5 and connected to the transfer platform 22. A transfer position (not shown) is provided on the platform body 223. The clamping mechanism is used to move the empty box 200 to the transfer position, and the fifth drive component 224 can move the empty box 200 from the transfer position to the stacking rack 23; and / or, the feeding end of the conveying mechanism 21 is higher than the discharging end of the conveying mechanism 21. Specifically, this structure achieves automatic gripping and positioning of the empty box 200 from the conveying mechanism 21 to the transfer platform 22 through the clamping mechanism, ensuring that the empty box 200 accurately enters the transfer position and avoids slippage or displacement; combined with the pushing action of the fifth drive component 224, the empty box 200 is smoothly transferred to the stacking rack 23. The clamping mechanism and the transfer platform 22 work together to improve the reliability and automation of the empty box 200 handover, and are particularly suitable for scenarios where the end positioning accuracy of the conveying mechanism 21 is limited or multiple picking points are required. Meanwhile, the feed end of the conveying mechanism 21 is higher than its discharge end, allowing the empty box 200 to slide naturally along the conveying mechanism 21 to the discharge end under the action of gravity. This completes the initial conveying without additional power, simplifying the structure and reducing energy consumption. The above design together realizes the continuous and automatic flow of the empty box 200 from conveying, receiving, positioning to stacking, improving the system's operating efficiency and stability.

[0032] Please see Figure 1 and Figure 3 In one embodiment, the stacking rack 23 includes at least one layer of guide rails 231, and each guide rail 231 is provided with at least one stacking station 2311, each stacking station 2311 being used to carry empty boxes 200. Specifically, the number of guide rails 231 and the number of stacking stations 2311 per layer are not limited and can be flexibly configured according to actual production rhythm, space layout, and storage needs. In this embodiment, there are two guide rails 231, which are arranged sequentially along the second direction. Each guide rail 231 is provided with two stacking stations 2311 sequentially along the first direction, and the first and second directions are arranged perpendicularly, thus forming a 2×2 layout of four stacking stations 2311. This structure maximizes the use of three-dimensional space within a limited space, realizing multi-station, layered, and orderly storage of empty boxes 200, improving equipment integration and storage efficiency. Each stacking station 2311 independently carries an empty box 200, facilitating sequential stacking by the transfer platform 22 and subsequent on-demand retrieval by the empty box handling trolley 4. By flexibly adjusting the number of guide rail layers 231 and the number of workstations per layer, it can be adapted to different production capacities and site conditions, and has good scalability and versatility, meeting the needs of air conditioning production lines for efficient, compact and customizable empty box 200 recycling devices.

[0033] Please see Figure 3In one embodiment, the feeding end of each guide rail 231 is higher than the discharging end of the corresponding guide rail 231. The discharging end of the guide rail 231 is also provided with a stop (not shown in the figure). The stop is electrically connected to the control system 5. The stop is used to restrict or allow the empty box 200 to move from the guide rail 231 to the handling rack 42. The number of stops is the same as that of the stacking station 2311 and they are set one-to-one. Specifically, this structure, through the inclined design of the feeding end of the guide rail 231 being higher than the discharging end, makes the empty box 200 tend to slide towards the discharging end under the action of gravity, realizing self-weight assisted conveying, and completing the discharging preparation of the empty box 200 without additional power. A stop is installed at the discharge end of the guide rail 231. Under normal conditions, it restricts the empty boxes 200 from sliding out, maintaining their stable stacking on the stacking station 2311. When the empty box transport trolley 4 arrives and docks with the stacking rack 23, the control system 5 controls the stop at the corresponding stacking station 2311 to release its restriction, allowing the foremost empty box 200 to slide out along the inclined guide rail 231 to the transport rack 42, achieving orderly release. Each stacking station 2311 is equipped with an independent stop, supporting independent control of multiple stations. It can accurately release the empty box 200 at a designated position according to transport requirements, avoiding malfunctions. This design realizes the automated and controllable flow of empty boxes 200 from stacking to discharge, improving discharge efficiency and operational safety, while reducing manual intervention and labor intensity. In addition, in this embodiment, the stop can be a cylinder, hydraulic cylinder, or electric telescopic rod; this embodiment is not limited to this.

[0034] Please see Figure 3 and Figure 4In one embodiment, the control system 5 includes a first control module (not shown), a second control module 51, a third control module 52, and a fourth control module (not shown). The suction mechanism 12 and the receiving platform 11 are both electrically connected to the first control module. The second control module 51 is mounted on the stacking rack 23, and the transfer platform 22, the first control module, and the third control module 52 are all electrically connected to the second control module 51. The third control module 52 is mounted on the handling rack 42, and the second moving mechanism 41 is electrically connected to the third control module 52. The first moving mechanism 31 and the handling platform 32 are both electrically connected to the fourth control module. Specifically, the suction mechanism 12 and the receiving platform 11 are both electrically connected to the first control module. The control system 5 is electrically connected to a third control module. The first control module is responsible for controlling the grabbing and receiving actions of the empty box 200, realizing the coordinated operation of the suction mechanism 12 and the receiving platform 11. The second control module 51, as the core coordination unit, uniformly receives instructions and schedules the stacking operation of the transfer platform 22. At the same time, it interacts with the first control module and the third control module 52 to realize the process connection of the empty box 200 from suction to stacking. The third control module 52 is used to control the autonomous movement and precise positioning of the empty box transport trolley 4. The first moving mechanism 31 and the transport platform 32 are both electrically connected to the fourth control module, which independently controls the operation of the empty pallet transport trolley 3 and the conveying action of the empty pallet 300. The control system 5 adopts a distributed modular architecture. Each control module is divided according to functional areas, managing independent units such as empty box 200 suction, stacking and transfer, empty box 200 transport, and empty pallet 300 transport. This not only improves the response speed and operational stability of the control system 5, but also facilitates later maintenance and fault isolation. The second control module 51 serves as the central control node to achieve cross-module communication and process linkage, ensuring that each device can still work collaboratively despite spatial separation and independent actions, forming a complete automated recycling process and improving system integration and operational reliability. Furthermore, in this embodiment, the first control module, second control module 51, third control module 52, and fourth control module can all be implemented using existing PLC (Programmable Logic Controller) architectures. Leveraging their high reliability, strong anti-interference capabilities, and mature logic control functions, stable operation of each module is ensured, and flexible programming and expansion are supported, facilitating system integration and maintenance.

[0035] Please see Figure 2 , Figure 4 and Figure 5In one embodiment, the empty box picking device 1 further includes a first sensing mechanism (not shown), which is used to detect whether there is an empty box 200 on the box picking position 410. The first sensing mechanism is electrically connected to the first control module; and / or, the handling rack 42 is provided with a first position detection mechanism 43, a first displacement detection mechanism 44, and a sixth drive assembly 46. The first position detection mechanism 43, the first displacement detection mechanism 44, and the sixth drive assembly 46 are all electrically connected to the third control module 52. The first position detection mechanism 43 is used to detect whether the handling rack 42 abuts against the stacking rack 23 or the empty box slide rail 500. The first displacement detection mechanism 44 is used to realize the autonomous movement, precise positioning, and safe obstacle avoidance of the second moving mechanism 41. The sixth drive assembly 46 can move the empty box 200 from the handling rack 42 to the empty pallet 300 on the empty box slide rail 500; and / or, the handling platform 32 is provided with The second position detection mechanism 33, the second displacement detection mechanism 34, and the second sensing mechanism (not shown in the figure) are all electrically connected to the fourth control module. The second sensing mechanism is used to detect whether there is an empty box 200 on the handling platform 32. The second position detection mechanism 33 is used to detect whether the handling platform 32 is in contact with the empty pallet rack or the empty box slide rail 500. The second displacement detection mechanism 34 is used to realize the autonomous movement, precise positioning, and safe obstacle avoidance of the first moving mechanism 31. Specifically, the first sensing mechanism is used to detect in real time whether there is an empty box 200 on the box picking position 410 and feeds the detection signal back to the first control module. The first control module judges the position status of the empty box 200 based on the signal, and then triggers the suction mechanism 12 to perform the grabbing action, realizing the automatic start and stop control of empty box 200 recycling, avoiding empty action or misoperation, and improving the reliability and timeliness of operation. The first position detection mechanism 43 on the handling rack 42 is used to detect whether the handling rack 42 accurately contacts the stacking rack 23 or the empty box slide rail 500, thereby ensuring the docking accuracy of the transfer and placement of the empty box 200; the first displacement detection mechanism 44 is used to realize the autonomous movement, precise positioning and safe obstacle avoidance of the second moving mechanism 41, supporting the empty box handling trolley 4 to automatically drive to the target workstation without human intervention, and to decelerate or stop in time when an obstacle is detected, ensuring operational safety. The push-out action of the sixth drive component 46 realizes the smooth transfer of the empty box 200 to the empty box slide rail 500. The second position detection mechanism 33 on the handling platform 32 is used to detect whether there is an empty box 200 on the handling platform 32, providing the control system 5 with the loading status information of the empty pallet 300, ensuring the orderly progress of the operation process; the second displacement detection mechanism 34 is used to realize the autonomous movement, precise positioning and safe obstacle avoidance of the first moving mechanism 31, enabling the empty pallet handling trolley 3 to automatically navigate, accurately stop and operate safely.The aforementioned detection mechanisms enable the detection of key actions and the autonomous operation of equipment, enhancing the system's automation, operational safety, and process controllability. This effectively supports the unmanned, continuous, and intelligent flow of empty boxes 200 and empty pallets 300. Furthermore, in this embodiment, the first and second sensing mechanisms can utilize existing photoelectric switches, ultrasonic sensors, or visual sensors; the first position detection mechanism 43 and the second position detection mechanism 33 can employ existing collision sensors or a combination of magnetic proximity switches and permanent magnets; the first displacement detection mechanism 44 and the second displacement detection mechanism 34 can utilize existing laser sensors or multi-sensor fusion systems; and the sixth drive component 46 can be a cylinder, hydraulic cylinder, or electric telescopic rod. This embodiment does not impose any limitations on these aspects.

[0036] Please see Figures 2 to 5In one embodiment, a first electric roller 111 is provided on the receiving platform 11, which can drive the empty box 200 to move to the conveying mechanism 21; and / or, a second electric roller 2231 is provided on the transfer platform 22; and / or, a third electric roller 321 is provided on the handling platform 32, which can drive the empty pallet 300 to move to the empty box slide rail 500; and / or, a first status indicator light 24 is provided on the stacking rack 23, which is electrically connected to the control system 5. The following are specific details regarding the electrical connection and control system: First, the receiving platform 11 has a first electric roller 111 electrically connected to the control system 5, which actively drives the empty box 200 to be smoothly transported from the receiving platform 11 to the conveying mechanism 21, achieving continuous transfer of the empty box 200, avoiding jamming, and improving transmission efficiency. Second, the transfer platform 22 has a second electric roller 2231 used to assist the empty box 200 in moving from the transfer platform 22 to the transfer position, reducing frictional resistance and improving the smoothness of handover. Third, the transfer platform 32 has a third electric roller 321 that can automatically move the empty pallet 300 from the transfer platform 32 to the front end of the empty box slide rail 500, achieving automatic placement of the empty pallet 300 without manual pushing. The stacking rack 23 is equipped with a first status indicator light 24, the handling rack 42 is equipped with a second status indicator light 45, and the handling platform 32 is equipped with a third status indicator light 35. Each status indicator light is electrically connected to the control system 5 to display the real-time operating status of the corresponding equipment (such as running, waiting for material, full, or faulty), facilitating on-site personnel to quickly grasp the equipment's working status and achieve visual management. The aforementioned electric rollers enhance the dynamism and reliability of material transfer at each stage, replacing manual pushing and pulling and reducing labor intensity. The configuration of status indicator lights improves human-machine interaction efficiency, which is beneficial for equipment monitoring, fault warning, and production scheduling, jointly ensuring the stable, efficient, and intelligent operation of the empty box 200 automatic recycling process.

[0037] In this embodiment, the PLC on the empty pallet rack calculates the replenishment demand based on the usage of the empty pallets 300 and sends a recycling command to the fourth control module; the empty pallet transport trolley 3 automatically moves to the corresponding empty pallet rack station under the control of the fourth control module via the first moving mechanism 31; after the photoelectric sensor switch on the empty pallet rack detects that the transport platform 32 has reached the correct position, it triggers a control signal to open the pallet stop, causing the empty pallet 300 to slide down under gravity. At the same time, the third electric roller 321 on the transport platform 32 starts to assist the empty pallet 300 in smoothly sliding into the transport rack. The transport platform 32, upon detecting the arrival of the empty pallet 300, sends a signal to the fourth control module. The empty pallet transport trolley 3 then transports the empty pallet 300 to the empty box slide rail 500 and pushes it to the front end of the slide rail 500 via the third electric roller 321. During this pushing process, the newly pushed empty pallet 300 continues to push the already assembled empty box 200 and pallet inward along the middle section of the slide rail 500, ensuring that the newly pushed empty pallet 300 accurately stops at the waiting position at the front of the slide rail, ready to automatically combine with subsequent empty boxes 200. This modular, zoned control architecture improves system response speed and operational stability, facilitating fault isolation and maintenance. By using the second control module 51 as a central control node to achieve cross-module linkage, it ensures that each device can still work efficiently and collaboratively even when spatially separated and operating independently. This achieves fully unmanned operation of the entire process of automatic replenishment, precise delivery, and station replacement of the empty pallet 300, improving the integration, controllability, continuity, and operational efficiency of the empty box 200 recycling system.

[0038] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. An empty container automatic recovery device characterized by comprising: The automatic empty container recycling device includes: An empty carton retrieval device includes a receiving platform and a retrieval mechanism. The retrieval mechanism is movably mounted on the receiving platform and is used to move empty cartons from the retrieval position to the receiving platform. An empty carton stacking device includes a conveying mechanism, a transfer platform, and a stacking rack. The conveying mechanism is located between a receiving platform and the transfer platform, with its inlet end abutting against the outlet end of the receiving platform to allow the receiving platform to move the empty carton to the conveying mechanism. The transfer platform is located on the side of the conveying mechanism away from the receiving platform and is movably mounted on the stacking rack. The transfer platform is used to move the empty carton from the outlet end of the conveying mechanism to the stacking rack. An empty pallet transport trolley includes a first moving mechanism and a transport platform. The first moving mechanism is located at the bottom of the transport platform, and the transport platform is used to move empty pallets from an empty pallet rack to an empty box slide rail. An empty container transport trolley includes a second moving mechanism and a transport rack. The second moving mechanism is located at the bottom of the transport rack, and the transport rack is used to move the empty container from the stacking rack to the empty pallet on the empty container slide rail. The control system includes an absorption mechanism, a receiving platform, a transfer platform, a first moving mechanism, a transport platform, and a second moving mechanism, all of which are electrically connected to the control system.

2. The empty container automatic recovery apparatus according to claim 1, wherein The suction mechanism includes a suction cup, a first driving component, and a second driving component. The first driving component is movably mounted on the receiving platform so that it can move relative to the receiving platform along a first direction. The second driving component is movably mounted on the first driving component so that it can move relative to the first driving component along a second direction. The suction cup is connected to the second driving component and is used to pick up empty boxes from the box retrieval position. The suction cup can move the empty boxes from the box retrieval position to the receiving platform via the second driving component and the first driving component. The first direction and the second direction are perpendicular to each other.

3. The empty container automatic recycling device according to claim 1, wherein The transfer platform includes a third drive component, a fourth drive component, and a platform body. The third drive component is movably mounted on the stacking rack so that it can move relative to the stacking rack in a first direction. The fourth drive component is movably mounted on the third drive component so that it can move relative to the third drive component in a second direction. The platform body is connected to the fourth drive component. The platform body can move the empty box from the discharge end of the conveying mechanism to the stacking rack via the fourth drive component and the third drive component. Both the third drive component and the fourth drive component are electrically connected to the control system. The first direction and the second direction are perpendicular to each other.

4. The empty container automatic recovery apparatus according to claim 3, wherein The transfer platform further includes a fifth drive component, which is movably mounted on the platform body so that the fifth drive component can move relative to the platform body along a third direction, thereby moving the empty box from the platform body to the stacking rack. The fifth drive component is electrically connected to the control system. The first direction, the second direction, and the third direction are perpendicular to each other.

5. The empty container automatic recycling device according to claim 4, wherein The empty box stacking device also includes a clamping mechanism, which is electrically connected to the control system and connected to the transfer platform. The platform body is provided with a transfer position. The clamping mechanism is used to move the empty box to the transfer position. The fifth drive component can move the empty box from the transfer position to the stacking rack. And / or, The feed end of the conveying mechanism is higher than the discharge end of the conveying mechanism.

6. The empty container automatic recycling device according to claim 3, wherein The stacking rack includes at least one layer of guide rails, and each guide rail is provided with at least one stacking station, each stacking station being used to carry the empty box.

7. The empty container automatic recycling device according to claim 6, wherein The feeding end of each guide rail is higher than the discharge end of the corresponding guide rail. The discharge end of the guide rail is also provided with a stop. The stop is electrically connected to the control system. The stop is used to restrict or allow the empty box to move from the guide rail to the handling rack. The number of stops is the same as the number of stacking stations and they are set one-to-one.

8. The empty container automatic recovery apparatus according to any one of claims 1 to 7, characterized by, The control system includes a first control module, a second control module, a third control module, and a fourth control module. The suction mechanism and the receiving platform are both electrically connected to the first control module. The second control module is disposed on the stacking rack, and the transfer platform, the first control module, and the third control module are all electrically connected to the second control module. The third control module is disposed on the handling rack, and the second moving mechanism is electrically connected to the third control module. The first moving mechanism and the handling platform are both electrically connected to the fourth control module.

9. The automatic empty container recycling device as described in claim 8, characterized in that, The empty box retrieval device further includes a first sensing mechanism, which is used to detect whether there is an empty box at the retrieval position. The first sensing mechanism is electrically connected to the first control module. And / or, The handling rack is equipped with a first position detection mechanism, a first displacement detection mechanism, and a sixth drive component. The first position detection mechanism, the first displacement detection mechanism, and the sixth drive component are all electrically connected to the third control module. The first position detection mechanism is used to detect whether the handling rack is in contact with the stacking rack or the empty box slide rail. The first displacement detection mechanism is used to realize the autonomous movement, precise positioning, and safe obstacle avoidance of the second moving mechanism. The sixth drive component can move the empty box from the handling rack to the empty pallet on the empty box slide rail. And / or, The transport platform is equipped with a second position detection mechanism, a second displacement detection mechanism, and a second sensing mechanism. Both the second position detection mechanism and the second displacement detection mechanism are electrically connected to the fourth control module. The second sensing mechanism is used to detect whether the transport platform has an empty box. The second position detection mechanism is used to detect whether the transport platform is in contact with the empty pallet rack or the empty box slide rail. The second displacement detection mechanism is used to enable the first moving mechanism to move autonomously, accurately position itself, and safely avoid obstacles.

10. The empty container automatic recycling device according to any one of claims 1 to 7, characterized by, The receiving platform is equipped with a first electric roller, which can drive the empty box to move to the conveying mechanism. And / or, The transfer platform is equipped with a second electric roller. And / or, The transport platform is equipped with a third electric roller, which can drive the empty pallet to move to the empty box slide rail; And / or, The stacking rack is equipped with a first status indicator light, which is electrically connected to the control system. And / or, The handling rack is equipped with a second status indicator light, which is electrically connected to the control system. And / or, The transport platform is equipped with a third status indicator light, which is electrically connected to the control system.

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