A movable storage unit and storage system

Abstract

The application relates to the technical field of goods storage, and discloses a movable storage unit and a storage system, wherein the storage unit comprises a transfer assembly and at least one storage layer. The first transfer mechanism capable of conveying goods along the horizontal first direction and the horizontal second direction is arranged on the transfer assembly, the storage sites suitable for storing goods are arranged in the circumferential direction of the transfer assembly, and the second transfer mechanism capable of conveying goods along the horizontal first direction and the horizontal second direction is arranged at each storage site. The automatic storage and taking of goods can be realized, each storage site has the capability of autonomously transferring goods, the compact design of the structure of the storage unit is facilitated, the space utilization of the storage unit is effectively improved, the construction and use cost of the storage unit is lower than that of the known goods storage and taking scheme, and the technology is simpler and easier to realize.

Description

A movable storage unit and storage system Technical Field

[0001] This invention relates to the field of cargo storage technology, and more specifically, to a movable storage unit and storage system. Background Technology

[0002] The content in this section only provides background information related to this invention and may not constitute prior art.

[0003] Common warehousing systems used for storing and retrieving goods typically include aisle stacker crane warehousing systems and shuttle warehousing systems.

[0004] In aisle-type stacker crane warehousing systems, stacker cranes are primarily used for the transfer and retrieval of goods. However, due to the large construction and operating costs and size of stacker cranes, aisle-type stacker crane warehousing systems suffer from drawbacks such as high construction and operating costs and low space utilization. In shuttle-type warehousing systems, shuttles that can move on racks are mainly used for the transfer and retrieval of goods. While this method can improve the efficiency of goods storage and retrieval and space utilization to some extent, the need to construct separate tracks on the racks for the shuttles results in high construction and operating costs, and the technology is more complex. Summary of the Invention

[0005] In view of this, the first objective of the present invention is to provide a movable storage unit that overcomes at least the problems of construction and use costs and space utilization in known warehousing systems. The second objective of the present invention is to provide a storage system using the aforementioned movable storage unit.

[0006] The objective of this invention is achieved through the following technical solution:

[0007] On one hand, the present invention provides a movable storage unit for cargo locations, comprising:

[0008] A transfer assembly includes a first transfer mechanism; the first transfer mechanism defines a first conveying surface suitable for carrying goods, the first transfer mechanism being configured to convey the goods on the first conveying surface toward one of a first horizontal direction and a second horizontal direction; the first horizontal direction and the second horizontal direction are perpendicular;

[0009] The transfer component also has a first inlet / outlet in the first horizontal direction and a second inlet / outlet in the second horizontal direction;

[0010] At least one storage layer, the storage layer including a first storage location corresponding to and aligned with the first inlet and outlet, and a second storage location corresponding to and aligned with the second inlet and outlet; both the first storage location and the second storage location are provided with a second transfer mechanism, the second transfer mechanism defining a second conveying surface; the second transfer mechanism is configured to convey goods on the second conveying surface toward one of the first horizontal direction and the second horizontal direction.

[0011] Furthermore, the first conveying surface includes conveying surface A and conveying surface B;

[0012] The first transfer mechanism includes:

[0013] Multiple rollers are arranged sequentially along the first horizontal direction, and each roller can rotate around its own axis; the multiple rollers are in the same horizontal plane to define the conveying surface A;

[0014] Multiple rollers are arranged sequentially along the second horizontal direction, and each roller can rotate around its own axis; the multiple rollers are in the same horizontal plane to define the conveying surface B;

[0015] Furthermore, the plurality of rollers are configured to move vertically between a first position and a second position;

[0016] When the plurality of rollers are in the first position, the conveying surface B is lower than the conveying surface A; when the plurality of rollers are in the second position, the conveying surface B is higher than the conveying surface A.

[0017] Furthermore, the first transfer mechanism also includes a fixed frame, a movable frame, an elastic element, and an electromagnet;

[0018] The plurality of rollers are rotatably mounted on the fixed frame, the movable frame is located above the fixed frame, and the plurality of rollers are rotatably mounted on the movable frame;

[0019] The elastic element is configured to elastically hold the movable frame together with the plurality of rollers in the second position; the electromagnet is disposed on the fixed frame and is configured to generate a magnetic force that attracts the movable frame when energized, the magnetic force being greater than the elastic force applied to the movable frame by the elastic element.

[0020] Furthermore, the first transfer mechanism also includes a roller drive assembly and a drum drive assembly;

[0021] The roller drive assembly includes a roller drive motor and a transmission roller. The transmission roller is rotatably mounted on the fixed frame below the roller and is drive-connected to each of the rollers. The roller drive motor is mounted on the fixed frame and is drive-connected to the transmission roller.

[0022] The roller drive assembly includes a roller drive motor, and two adjacent rollers among the plurality of rollers are connected by a drive connection. The roller drive motor is mounted on the movable frame and is connected by a drive connection to one of the rollers.

[0023] Furthermore, the second transfer mechanism and the first transfer mechanism have essentially the same structure;

[0024] In the second transfer mechanism provided at each of the first and second storage locations, both the roller drive motor and the drum drive motor in the second transfer mechanism are mounted on the transfer assembly; the roller drive motor in the second transfer mechanism is driven by a first mating gear, and the drum drive motor in the second transfer mechanism is driven by a second mating gear.

[0025] Both the first and second mating gears are configured to move horizontally between mating and non-matting positions.

[0026] One of the transmission rollers in the second transfer mechanism is connected to a third docking gear corresponding to its own first docking gear, and the third docking gear is adapted to engage with the first docking gear in the docking position;

[0027] One of the rollers in the second transfer mechanism is connected to a fourth docking gear corresponding to its own second docking gear; wherein, when the plurality of rollers in the second transfer mechanism are in the second position, the fourth docking gear can engage with the second docking gear in the docking position.

[0028] Furthermore, the storage layer also includes a third storage location that is adjacent to both the first and second storage locations, and the second transfer mechanism is provided at the third storage location.

[0029] Furthermore, one of the rollers in the second transfer mechanism at the third storage location adjacent to the first storage location is connected to one of the rollers in the second transfer mechanism at the corresponding first storage location via a first transmission mechanism; and the rollers in the second transfer mechanism at the third storage location adjacent to the first storage location share a moving frame with the rollers in the second transfer mechanism at the corresponding first storage location.

[0030] One of the drive rollers in the second transfer mechanism at the third storage location adjacent to the second storage location is connected to one of the drive rollers in the corresponding second transfer mechanism at the second storage location via a second transmission mechanism.

[0031] Furthermore, both the first transmission mechanism and the second transmission mechanism are unidirectional transmission mechanisms.

[0032] Furthermore, the transfer component is also configured to be able to reciprocate linearly along the vertical direction;

[0033] The number of storage layers is multiple, and the multiple storage layers are arranged sequentially along the movement path of the transfer component.

[0034] On the other hand, the present invention provides a storage system including at least one of the above-described movable storage units.

[0035] The technical solutions of the embodiments of the present invention have at least the following advantages and beneficial effects:

[0036] The storage unit disclosed in this invention features a first transfer mechanism on a transfer component capable of conveying goods along a first horizontal direction and a second horizontal direction. Simultaneously, storage locations suitable for storing goods are arranged circumferentially around the transfer component, and a second transfer mechanism capable of conveying goods along the first horizontal direction and the second horizontal direction is arranged at each storage location. Since each storage location has the ability to autonomously transfer goods, goods at any storage location can be conveniently stored and retrieved. This also facilitates a compact design of the storage unit structure, effectively improving the space utilization rate of the storage unit. Compared to known warehousing systems' goods storage and retrieval schemes, this storage unit has lower construction and operating costs, and the technology is simpler and easier to implement. Attached Figure Description

[0037] Figure 1 is a schematic diagram of the structure of the movable storage unit provided in an embodiment of the present invention;

[0038] Figure 2 is a top view of the movable storage unit shown in Figure 1;

[0039] Figure 3 is a cross-sectional view along direction AA in Figure 2;

[0040] Figure 4 is a schematic diagram of the transfer component provided in an embodiment of the present invention;

[0041] Figure 5 is a top view of the transfer component shown in Figure 4;

[0042] Figure 6 is a cross-sectional view along the BB direction in Figure 5, showing the state of multiple rollers in the first transfer mechanism when they are in the second position;

[0043] Figure 7 is a magnified view of the local structure at point C in Figure 6;

[0044] Figure 8 is a top view of a single storage layer provided in an embodiment of the present invention;

[0045] Figure 9 is a magnified view of the local structure at point D in Figure 3;

[0046] Figure 10 is a cross-sectional view along the EE direction in Figure 8;

[0047] Figure 11 is a cross-sectional view along the FF direction in Figure 8;

[0048] Figure 12 is a schematic diagram of the storage system provided in an embodiment of the present invention.

[0049] Icons: 100-Storage unit, 10-Transfer assembly, 11-First transfer mechanism, 111-Roller, 112-Roller, 113-Fixed frame, 114-Moving frame, 115-Elastic element, 116-Electromagnet, 117-Drive roller, 12-First inlet / outlet, 13-Second inlet / outlet, 14-Image acquisition component, 20-Storage layer, 21-First storage location, 22-Second storage location, 23-Second transfer mechanism, 231-First docking tooth 232-Second mating gear, 233-Third mating gear, 234-Fourth mating gear, 24-Third storage position, 25-First transmission mechanism, 251-First ratchet sprocket, 252-First pawl, 253-First chain, 26-Second transmission mechanism, 261-Second ratchet sprocket, 262-Second pawl, 263-Second chain, 30-Moving component, 31-Moving gear, 32-Fixed rack, 200-Conveying unit. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments. The same reference numerals in the accompanying drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the described embodiments of this invention without creative effort are within the scope of protection of this invention.

[0051] Compared to the embodiments shown in the accompanying drawings, feasible embodiments within the scope of protection of this invention may have fewer components, other components not shown in the drawings, different components, components arranged differently, or components with different connections, etc. Furthermore, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0052] Example 1

[0053] On the one hand, Embodiment 1 of the present invention provides a storage unit 100, which is particularly a storage unit 100 with a storage location capable of moving goods, in order to achieve the transfer and retrieval of goods with lower construction and use costs and higher space utilization.

[0054] As shown in Figures 1 to 3, Figure 1 shows a schematic diagram of the structure of the exemplary storage unit 100 disclosed in this embodiment, Figure 2 is a top view of the storage unit 100 shown in Figure 1, and Figure 3 is a cross-sectional view of the storage unit 100 shown in Figure 1. In the storage unit 100 shown in Figures 1 to 3, the storage unit 100 may include a transfer component 10 and at least one storage layer 20.

[0055] In this embodiment, the transfer component 10 is mainly used to realize the transfer of goods, specifically including: receiving goods that need to be stored and transferring the goods to be stored to the storage location of the target storage layer 20 for storage; or receiving goods from the storage location of the target storage layer 20 and transferring the goods out, so as to facilitate subsequent operations such as shipping of the goods.

[0056] Specifically, referring to Figure 4, the transfer assembly 10 may include a first transfer mechanism 11. This first transfer mechanism 11 defines a first conveying surface suitable for carrying goods. Furthermore, the first transfer mechanism 11 is configured to convey goods on the first conveying surface in one of a first horizontal direction and a second horizontal direction.

[0057] It is worth noting that the first horizontal direction and the second horizontal direction described in this embodiment are perpendicular. For example, the first horizontal direction in this embodiment can be the X-axis direction shown in Figure 4, and the second horizontal direction can be the Y-axis direction shown in Figure 4. Correspondingly, the vertical direction described below can be the Z-axis direction shown in Figure 4.

[0058] In this embodiment, the phrase "the first transfer mechanism 11 is further configured to transport goods on the first conveying surface in one of a first horizontal direction and a second horizontal direction" means that the first transfer mechanism 11 has the ability to transport goods in both the first horizontal direction and the second horizontal direction. Specifically, when the first transfer mechanism 11 is used to transport goods in the first horizontal direction, the goods on the first conveying surface can move in that direction; conversely, when the first transfer mechanism 11 is used to transport goods in the second horizontal direction, the goods on the first conveying surface can move in that direction. Thus, the first transfer mechanism 11 has the ability to transport goods in at least two different horizontal directions.

[0059] Referring again to Figure 4, the transfer assembly 10 further includes a first inlet / outlet 12 in a horizontal first direction for passage of goods moving in that direction, and a second inlet / outlet 13 in a horizontal second direction for passage of goods moving in that direction. Thus, when the first transfer mechanism 11 transports goods on the first conveying surface in the horizontal first direction, the goods can pass through the corresponding first inlet / outlet 12; correspondingly, when the first transfer mechanism 11 transports goods on the first conveying surface in the horizontal second direction, the goods can pass through the corresponding second inlet / outlet 13.

[0060] The first transfer mechanism 11 may be constructed, but is not limited to, in the manner described below, so that it has the ability to transport goods in at least two different directions.

[0061] The first conveying surface defined by the first transfer mechanism 11 described above may further include a conveying surface A and a second conveying surface B. Conveying surface A and conveying surface B are two conveying surfaces that can overlap each other in the vertical direction; that is, when viewed from the vertical direction, conveying surface A and conveying surface B coincide, so that either conveying surface A or conveying surface B can be used independently as the first conveying surface.

[0062] Referring to Figures 4 to 6, the first transfer mechanism 11 may include a plurality of rollers 111 and a plurality of drums 112. The plurality of rollers 111 are arranged sequentially along a first horizontal direction, with the axis of each roller 111 parallel to a second horizontal direction, and each roller 111 is rotatable about its own axis. Furthermore, the plurality of rollers 111 are located in the same horizontal plane, thereby defining a conveying surface A suitable for carrying goods. The conveying surface A may be a plane formed by the vertices of the plurality of rollers 111.

[0063] Thus, when goods are carried on conveying surface A, if all or some of the rollers 111 rotate, the goods carried on conveying surface A can move along the first horizontal direction under the action of the rollers 111, thereby enabling the first transfer mechanism 11 to have the ability to transport goods along the first horizontal direction.

[0064] Multiple rollers 112 are arranged sequentially along a second horizontal direction, with the axis of each roller 112 parallel to the first horizontal direction, and each roller 112 can rotate about its own axis. Furthermore, the multiple rollers 112 are located in the same horizontal plane, thereby defining a conveying surface B suitable for carrying goods. The conveying surface B can be a plane formed by the vertices of the multiple rollers 112.

[0065] Thus, when goods are carried on the conveying surface B, if all or some of the rollers 112 rotate, the goods can move along the second horizontal direction under the action of the rollers 112, thereby enabling the first transfer mechanism 11 to have the ability to transport goods along the second horizontal direction.

[0066] Furthermore, the plurality of rollers 112 are configured to move vertically between a first position and a second position. Specifically, when the plurality of rollers 112 are in the first position, the conveying surface B is lower than the conveying surface A; when the plurality of rollers 112 are in the second position as shown in FIG. 6, the conveying surface B is higher than the conveying surface A. This enables the first transfer mechanism 11 to convey goods on the first conveying surface in either a first horizontal direction or a second horizontal direction.

[0067] Specifically, assuming that in the initial state, all rollers 112 are in the first position, and the conveying surface B is lower than the conveying surface A, the goods can be carried on the conveying surface A. Based on this, if all or some of the rollers 111 rotate, the goods carried on the conveying surface A can move along the first horizontal direction under the action of the rollers 111, allowing the goods to pass through the corresponding first inlet / outlet 12. Conversely, if it is necessary to convey goods along the second horizontal direction, the rollers 112 are first moved vertically from the first position to the second position as shown in Figure 6. When the rollers 112 are in the second position, since the conveying surface B is higher than the conveying surface A, the goods can be carried on the conveying surface B. Based on this, if all or some of the rollers 112 rotate, the goods carried on the conveying surface B can move along the second horizontal direction under the action of the rollers 112, allowing the goods to pass through the corresponding second inlet / outlet 13.

[0068] It is understandable that this method is adopted because when the first transfer mechanism 11 transports the goods in the first horizontal direction, only the rollers 111 are in contact with the goods, and when the first transfer mechanism 11 transports the goods in the second horizontal direction, only the rollers 112 are in contact with the goods. Therefore, it helps to reduce the friction between the goods and the relevant components in the first transfer mechanism 11 when transporting the goods in either the first or second horizontal direction, thereby helping the goods to move reliably and smoothly in the target direction.

[0069] The movement of multiple rollers 112 between the first position and the second position can be achieved, but is not limited to, in the manner described below.

[0070] Referring to Figures 6 and 7, the first transfer mechanism 11 further includes a fixed frame 113, a movable frame 114, an elastic element 115, and an electromagnet 116. Multiple rollers 111 are rotatably mounted on the fixed frame 113, wherein the position of the fixed frame 113 relative to the movable frame 114 is immutable, so that the positions of the multiple rollers 111 relative to the multiple rollers 112 are immutable. The movable frame 114 can be located above the fixed frame 113, and the multiple rollers 112 are rotatably mounted on the movable frame 114.

[0071] An elastic element 115 is connected between the fixed frame 113 and the movable frame 114. For example, one end of the elastic element 115 can be connected to the top surface of the fixed frame 113, and the other end of the elastic element 115 can be connected to the bottom surface of the movable frame 114, so as to elastically hold the movable frame 114 together with the multiple rollers 112 in a second position. The elastic element 115 can be a spring.

[0072] Electromagnet 116 can be disposed on fixed frame 113, for example, on top surface of fixed frame 113, and electromagnet 116 is configured to generate a magnetic force that attracts moving frame 114 when energized, and the magnetic force is greater than the elastic force applied to moving frame 114 by elastic member 115, so that moving frame 114 together with multiple rollers 112 can be held in a first position.

[0073] Thus, assuming the electromagnet 116 is initially energized, the magnetic force generated by the electromagnet 116 is greater than the elastic force of the elastic element 115. Therefore, the moving frame 114 will overcome the elastic force of the elastic element 115 under the action of the magnetic force generated by the electromagnet 116 and drive multiple rollers 112 to remain in the first position. At this time, the elastic element 115 will be in a compressed state, and multiple rollers 111 can be used to transport goods. Correspondingly, when the electromagnet 116 is de-energized, the magnetic force acting on the moving frame 114 disappears. At this time, the moving frame 114 will drive multiple rollers 112 to move upward from the first position to the second position as shown in Figure 6 under the action of the elastic force released by the elastic element 115. At this time, multiple rollers 112 can be used to transport goods. It can be seen that, based on the above settings, by simply controlling the on and off of the electromagnet 116, the moving frame 114 can be used to drive multiple rollers 112 to move back and forth between the first and second positions.

[0074] Understandably, in practical implementation, the stability and reliability of the moving frame 114 when moving vertically can be improved by sequentially arranging multiple elastic elements 115 and multiple electromagnets 116 along the circumference of the moving frame 114. Meanwhile, to prevent interference between the rollers 112 and the wheels 111 when the multiple rollers 112 move between the first and second positions, as shown in Figure 4, the rollers 112 and wheels 111 can be arranged in an alternating manner.

[0075] In order to enable all or part of the multiple rollers 111 and all or part of the multiple drums 112 to rotate, the first transfer mechanism 11 may further include a roller drive assembly and a drum drive assembly. The roller drive assembly is configured to drive the multiple rollers 111 in the first transfer mechanism 11 to rotate synchronously, and the drum drive assembly is configured to drive the multiple drums 112 in the first transfer mechanism 11 to rotate synchronously.

[0076] Referring to Figures 6 or 7, the roller drive assembly may include a roller drive motor (not shown) and a drive roller 117. The drive roller 117 is rotatably mounted on a fixed frame 113 below the rollers 111, and the axis of the drive roller 117 is parallel to the axis of the rollers 111. Furthermore, the drive roller 117 can be connected to each roller 111 via a conventional transmission mechanism such as a belt drive or chain drive. The roller drive motor can be mounted on the fixed frame 113 and is drively connected to the drive roller 117 to drive the drive roller 117 to rotate.

[0077] Thus, when the roller drive motor drives the transmission roller 117 to rotate, based on the transmission connection between each roller 111 in the first transfer mechanism 11 and the transmission roller 117, each roller 111 will rotate synchronously under the transmission action of the transmission roller 117. This achieves the purpose of using a single roller drive motor to drive each roller 111 in the first transfer mechanism 11 to rotate synchronously.

[0078] The number of rollers 111 in a single first transfer mechanism 11 can be set as needed. Referring to FIG4, multiple rollers 111 on the same horizontal direction (e.g., a second horizontal direction) can be grouped into a roller set, and the drive rollers 117 can be configured to correspond one-to-one with each roller set. Each roller 111 in each roller set can be driven to its corresponding drive roller 117, and each drive roller 117 (i.e., between two adjacent drive rollers 117) is driven to each other. A roller drive motor is driven to one of the drive rollers 117. Thus, when the roller drive motor drives the drive roller 117 to rotate, all drive rollers 117 will rotate synchronously, and correspondingly, the rollers 111 in each roller set corresponding to the drive roller 117 will also rotate synchronously. This method allows for the arrangement of more rollers 111 in a single first transfer mechanism 11.

[0079] The roller drive assembly may include a roller drive motor (not shown in the figure). Adjacent rollers 112 in the first transfer mechanism 11 can be connected via conventional transmission mechanisms such as belt drives or chain drives. The roller drive motor can be fixed to the movable frame 114 and is driven to one of the rollers 112. Thus, when the roller drive motor drives the connected roller 112 to rotate, all rollers 112 will rotate synchronously. This achieves the goal of using a single roller drive motor to drive the synchronous rotation of all rollers 112 in the first transfer mechanism 11.

[0080] In this embodiment, the storage layer 20 is adapted to store goods. Specifically, the storage layer 20 includes storage locations suitable for storing goods. Further, referring to Figures 2 and 3, the storage locations include at least a first storage location 21 that corresponds one-to-one with and is aligned with the first inlet / outlet 12, and a second storage location 22 that corresponds one-to-one with and is aligned with the second inlet / outlet 13.

[0081] The first storage location 21 is adapted to receive goods from the first inlet / outlet 12 of the transfer assembly 10, or to transfer goods stored inside itself to the first conveying surface of the first transfer mechanism 11 of the transfer assembly 10 via the first inlet / outlet 12. The second storage location 22 is adapted to receive goods from the second inlet / outlet 13 of the transfer assembly 10, or to transfer goods stored inside itself to the first conveying surface of the first transfer mechanism 11 of the transfer assembly 10 via the second inlet / outlet 13.

[0082] Furthermore, in this embodiment, each storage layer 20 is provided with a second transfer mechanism 23 at the first storage location 21 and the second storage location 22. The second transfer mechanism 23 defines a second conveying surface. Moreover, the second transfer mechanism 23 is configured to convey goods on the second conveying surface in one of a first horizontal direction and a second horizontal direction.

[0083] It is worth noting that the structure of the second transfer mechanism 23 described in this embodiment can be basically the same as the structure of the first transfer mechanism 11, so that the second transfer mechanism 23 can transport goods in one of the horizontal first direction and the horizontal second direction through the same working method as the first transfer mechanism 11. The second conveying surface in the second transfer mechanism 23 corresponds to the first conveying surface in the first transfer mechanism 11.

[0084] Based on the aforementioned setup, when actually using the storage unit 100 disclosed in this embodiment, if a goods storage operation (i.e., the operation of storing goods to the target storage location) needs to be performed, after the goods are fully supported on the first conveying surface of the first transfer mechanism 11 of the transfer component 10, the goods can be further supported on the corresponding conveying surface according to the target storage location to be used. For example, if it is necessary to store the goods in the first storage location 21 of the storage layer 20, the electromagnet 116 in the first transfer mechanism 11 is kept energized so that the moving frame 114 drives multiple rollers 112 to remain in the first position, thereby utilizing the conveying surface A formed by the multiple rollers 111 in the first transfer mechanism 11 to support the goods. Subsequently, by simply rotating the multiple rollers 111 in the first transfer mechanism 11, the goods can be transported to the corresponding first storage location 21 via the corresponding first inlet / outlet 12. Correspondingly, if the goods need to be stored in the second storage location 22 of the storage layer 20, the electromagnet 116 in the first transfer mechanism 11 is de-energized, so that the moving frame 114, under the elastic force of the elastic member 115, drives the multiple rollers 112 to remain in the second position, thereby using the conveying surface B formed by the multiple rollers 112 in the first transfer mechanism 11 to carry the goods. Subsequently, by simply rotating the multiple rollers 112 in the first transfer mechanism 11, the goods can be transported to the corresponding second storage location 22 via the corresponding second inlet / outlet 13.

[0085] It is worth noting that each of the first storage locations 21 and the second storage location 22 in the storage layer 20 is provided with a second transfer mechanism 23 that has a structure and function that is basically the same as the first transfer mechanism 11. Therefore, when there are goods in the first storage location 21 and the second storage location 22, the goods in the first storage location 21 and the second storage location 22 can be transferred to the first conveying surface of the first transfer mechanism 11 through the corresponding inlet and outlet under the action of the corresponding second transfer mechanism 23, so as to realize the operation of taking out the goods (that is, taking out the goods in the storage location into the transfer component 10), thereby facilitating subsequent operations such as shipping.

[0086] It is understood that this embodiment, by setting a first transfer mechanism 11 on the transfer component 10 capable of conveying goods along the first horizontal direction and the second horizontal direction, and arranging storage positions suitable for storing goods around the circumference of the transfer component 10, and arranging a second transfer mechanism 23 capable of conveying goods along the first horizontal direction and the second horizontal direction at each storage position, not only can the automated storage and retrieval of goods be realized, but also, based on the fact that each storage position has the ability to autonomously transfer goods, it is beneficial to the compact design of the storage unit 100 structure, so as to effectively improve the space utilization of the storage unit 100. Moreover, compared with the goods storage and retrieval schemes adopted by known warehousing systems, the storage unit 100 disclosed in this embodiment has lower construction and usage costs, and the technology is simpler and easier to implement.

[0087] In order to increase the number of goods that a single storage layer 20 can store and make reasonable use of the limited space, in conjunction with the contents shown in Figure 2 or Figure 8, the storage location of each storage layer 20 may also include a third storage location 24 that is adjacent to the first storage location 21 and the second storage location 22.

[0088] For example, Figure 4 of this embodiment shows a case where the transfer component 10 has first inlets and outlets 12 on both sides opposite to each other in the first horizontal direction, and second inlets and outlets 13 on both sides opposite to each other in the second horizontal direction. In this case, each storage layer 20 may include a total of eight storage positions arranged circumferentially around the transfer component 10, as shown in Figure 2 or Figure 8. The eight storage positions specifically include two first storage positions 21, two second storage positions 22, and four third storage positions 24. Among them, the two first storage positions 21 are respectively aligned with the two first inlets and outlets 12, the two second storage positions 22 are respectively aligned with the two second inlets and outlets 13, and the four third storage positions 24 are simultaneously adjacent to the corresponding first storage positions 21 and second storage positions 22.

[0089] For example, in this embodiment, the eight storage locations of each storage layer 20 are defined as storage locations 1-8 as shown in Figure 8. Among storage locations 1-8, storage locations 1, 3, 6, and 8 can be understood as third storage locations 24 that are simultaneously adjacent to the first storage location 21 and the second storage location 22. Storage locations 4 and 5 can be understood as two first storage locations 21 that are respectively aligned with the two first inlets / outlets 12 of the transfer component 10. Storage locations 2 and 7 can be understood as two second storage locations 22 that are respectively aligned with the two second inlets / outlets 13 of the transfer component 10.

[0090] Furthermore, each of the third storage locations 24 in each storage layer 20 of this embodiment is also provided with a second transfer mechanism 23. This facilitates the transfer of goods between any two adjacent storage locations. For example, when goods from the transfer component 10 arrive at the first storage location 21, the goods can be transferred to the adjacent third storage location 24 by the action of the second transfer mechanism 23 at the first storage location 21, and the goods at the third storage location 24 can also be transferred back to the first storage location 21 by the action of the second transfer mechanism 23 at the third storage location 24. Similarly, goods can also be transferred between adjacent second storage locations 22 and third storage locations 24.

[0091] Understandably, by setting up the third storage location 24, not only is the amount of goods that can be stored in a single storage layer 20 increased, but the rational use of limited space is also further realized, which is conducive to improving space utilization.

[0092] Furthermore, in order to effectively increase the number of goods that the storage unit 100 disclosed in this embodiment can store, the number of storage layers 20 can be multiple.

[0093] At this point, the transfer component 10 is further configured to reciprocate linearly in the vertical direction, and the multiple storage layers 20 are arranged sequentially along the moving direction of the transfer component 10, so that the transfer component 10 moving in the vertical direction can sequentially reach the location of each storage layer 20. For example, Figure 1 or Figure 3 of this embodiment shows a case where a single storage cell 100 includes three storage layers 20. Of course, the number of storage layers 20 is not limited to this and is not limited here.

[0094] Thus, when storing or retrieving goods, it is only necessary to move the transfer component 10 vertically to different storage layers 20, and align the first inlet / outlet 12 and the second inlet / outlet 13 on the transfer component 10 with the first storage position 21 and the second storage position 22 of the corresponding storage layer 20, so that the transfer component 10 can cooperate with the storage layer 20 to realize the storage and retrieval of goods.

[0095] The reciprocating linear movement of the transfer component 10 along the vertical direction can be achieved, but is not limited to, in the manner described below.

[0096] Specifically, referring to Figures 3 and 9, the storage unit 100 may further include a moving component 30 configured to drive the transfer component 10 to reciprocate linearly in a vertical direction. The moving component 30 may include a moving gear 31 and a fixed rack 32. The moving gear 31 is rotatably mounted on the transfer component 10, for example, on the fixed frame 113 of the first transfer mechanism 11 in the transfer component 10, and can rotate under the drive of a driving device (not shown) such as a motor. The fixed rack 32 extends along the moving path of the transfer component 10 and is fixed, and the moving gear 31 meshes with the fixed rack 32. For example, the fixed rack 32 can be fixed to the frame of each storage layer 20.

[0097] Thus, simply rotating the movable gear 31 on the transfer assembly 10 will drive the entire transfer assembly 10 to move along the extension direction of the fixed rack 32. The movable gear 31 can be positioned at the four corners of the bottom of the fixed frame 113 of the first transfer mechanism 11 of the transfer assembly 10 to improve the reliability of the transfer assembly 10 during movement.

[0098] Referring to Figure 6, the transfer assembly 10 may further include an image acquisition component 14 disposed above the first conveying surface of the first transfer mechanism 11. This image acquisition component 14 is configured to acquire image information of the goods carried on the first conveying surface and send this image information to a back-end terminal, enabling the back-end terminal to observe the condition of the goods carried on the first conveying surface in real time. The image acquisition component 14 may be a camera disposed above the first conveying surface.

[0099] On the other hand, as shown in FIG12, Embodiment 1 of the present invention also discloses a storage system, which includes at least one of the aforementioned storage units 100. It is understood that by employing the aforementioned storage unit 100, the storage system possesses at least the beneficial effects of the aforementioned storage unit 100, namely, it can achieve automated storage and retrieval of goods, reduce construction and operating costs, and improve space utilization.

[0100] In actual implementation, the storage system may include multiple storage units 100 arranged in a certain pattern. For example, as shown in FIG12, the multiple storage units 100 may be arranged in a rectangular array to optimize the structural design of the entire storage system as much as possible and improve space utilization.

[0101] In addition, the storage system may also include a conveying unit 200, which is adapted to convey external goods to be stored to the first conveying surface of the first transfer mechanism 11 of the transfer assembly 10 of each storage unit 100, or to receive goods from the transfer assembly 10 of each storage unit 100. The conveying unit 200 may be a conveying device such as a belt conveyor or a roller conveyor.

[0102] Example 2

[0103] Based on Embodiment 1, considering that when there are multiple storage layers 20, arranging drive devices such as roller drive motors or drum drive motors for the second transfer mechanism 23 at the first storage location 21 and the second storage location 22 of each storage layer 20 would result in significant construction and usage costs. Therefore, this embodiment provides a storage unit 100 with an alternative structural form. Unlike Embodiment 1, this embodiment further improves the second transfer mechanism 23 at the first storage location 21 and the second storage location 22 of each storage layer 20, aiming to further reduce the construction and usage costs of the storage unit 100.

[0104] Specifically, in the second transfer mechanism 23 provided at each of the first storage positions 21 and the second storage positions 22, both the roller drive motor and the drum drive motor in the second transfer mechanism 23 are mounted on the transfer assembly 10. For example, the roller drive motor can be fixedly mounted on the fixed frame 113 of the first transfer mechanism 11; the drum drive motor can be mounted on the moving frame 114 of the first transfer mechanism 11, so that the drum drive motor in the second transfer mechanism 23 can move between the first position and the second position following the moving frame 114 of the first transfer mechanism 11.

[0105] Referring to Figure 9, the roller drive motors in the second transfer mechanism 23 are all driven by the first mating gear 231, so that the first mating gear 231 can rotate under the drive of the corresponding roller drive motor; correspondingly, the drum drive motors in the second transfer mechanism 23 are driven by the second mating gear 232, so that the second mating gear 232 can rotate under the drive of the corresponding drum drive motor.

[0106] Furthermore, the roller drive motor along with the first mating gear 231 and the roller drive motor along with the second mating gear 232 in the second transfer mechanism 23 are configured to move horizontally between the mating position and the non-matting position as shown in Figure 9. For example, linear actuators corresponding to the roller drive motor and the roller drive motor can be provided respectively, and the roller drive motor and the roller drive motor can be set at the output end of the corresponding linear actuators, so that the roller drive motor along with the first mating gear 231 and the roller drive motor along with the second mating gear 232 can move independently between the mating position and the non-matting position. The linear actuator can be a conventional linear drive device such as a cylinder or an electric actuator.

[0107] Referring again to Figure 9, a transmission roller 117 in the second transfer mechanism 23 is connected to a third docking gear 233 corresponding to its own first docking gear 231, and the third docking gear 233 is adapted to engage with the first docking gear 231 when it is in the docking position; correspondingly, a roller 112 in the second transfer mechanism 23 is connected to a fourth docking gear 234 corresponding to its own second docking gear 232, wherein when the multiple rollers 112 in the second transfer mechanism 23 are in the second position (that is, the position when the electromagnet 116 in the second transfer mechanism 23 is de-energized), the fourth docking gear 234 can engage with the second docking gear 232 when it is in the docking position.

[0108] Based on the above settings, assuming that in the initial state, the roller drive motors and the first docking gears 231 and the roller drive motors and the second docking gears 232 in the second transfer mechanisms 23 belonging to each first storage location 21 and the second storage location 22 on the transfer component 10 are all in the non-docked position as shown in Figure 9, so that the transfer component 10 can move normally in the vertical direction between each storage layer 20.

[0109] When the transfer component 10 moves vertically to the location of any one of the storage layers 20, the first docking gear 231 and the second docking gear 232 of the second transfer mechanism 23 belonging to each of the first storage positions 21 and the second storage positions 22 on the transfer component 10 can be aligned with the third docking gear 233 and the fourth docking gear 234 of the second transfer mechanism 23 at the corresponding storage position in the storage layer 20.

[0110] Based on this, it is only necessary to move the roller drive motor in the second transfer mechanism 23 belonging to each of the first and second storage positions 21 and 22 on the transfer assembly 10, together with the first docking gear 231, from the non-dating position to the docking position, so that the first docking gear 231 can engage with the corresponding third docking gear 233. This enables the power of the roller drive motor of the second transfer mechanism 23 on the transfer assembly 10 to the transmission roller 117 in the corresponding second transfer mechanism 23, and then transmits the power to the multiple rollers 111 of the corresponding second transfer mechanism 23 through the transmission roller 117, so as to make the multiple rollers 111 in the corresponding second transfer mechanism 23 rotate synchronously. Correspondingly, when the multiple rollers 112 in the second transfer mechanism 23 in the first storage location 21 and the second storage location 22 of the storage layer 20 are in the second position, and the multiple rollers 112 in the first transfer mechanism 11 on the transfer assembly 10 are also in the second position, it is only necessary to move the roller drive motor in the second transfer mechanism 23 belonging to each first storage location 21 and the second storage location 22 on the transfer assembly 10, together with the second docking gear 232, from the non-dating position to the docking position, so that the second docking gear 232 can engage with the corresponding fourth docking gear 234, thereby realizing the transmission of the power of the roller drive motor of the second transfer mechanism 23 on the transfer assembly 10 to the multiple rollers 112 in the corresponding second transfer mechanism 23, and thus realizing the synchronous rotation of the multiple rollers 112 in the corresponding second transfer mechanism 23.

[0111] Understandably, by adopting this method, it is only necessary to arrange a power source consisting of a roller drive motor and a wheel drive motor in the second transfer mechanism 23 at each first storage location 21 and second storage location 22 on the transfer component 10. This power source can then be used as the power source for the rollers 111 and rollers 112 in the second transfer mechanism 23 at each first storage location 21 and second storage location 22 of each storage layer 20, effectively reducing the construction and use costs of the storage unit 100.

[0112] In this embodiment, the first mating gear 231, the second mating gear 232, the third mating gear 233, and the fourth mating gear 234 can all be end face gears.

[0113] Example 3

[0114] Based on Embodiment 2, considering that arranging roller drive motors and drum drive motors separately for the second transfer mechanism 23 at the third storage location 24 also presents the problem of high construction and usage costs, this embodiment also provides a storage unit 100 with another structural form. Unlike Embodiment 2, this embodiment further improves the second transfer mechanism 23 at each third storage location 24 in order to further reduce the construction and usage costs of the storage unit 100.

[0115] Specifically, this embodiment further specifies that the second transfer mechanism 23 provided at each of the third cargo positions 24 may not include the roller drive motor and the drum drive motor.

[0116] Referring to Figure 10, one of the rollers 112 in the second transfer mechanism 23 located at the third storage location 24 adjacent to each first storage location 21 is connected to one of the rollers 112 in the second transfer mechanism 23 located at the corresponding first storage location 21 via the first transmission mechanism 25; and the rollers 112 in the second transfer mechanism 23 located at the third storage location 24 adjacent to each first storage location 21 share a moving frame 114 with the rollers 112 in the second transfer mechanism 23 located at the corresponding first storage location 21.

[0117] For example, in this embodiment, for the second transfer mechanisms 23 at cargo locations 1, 4, and 6, one of the rollers 112 in the second transfer mechanism 23 at cargo location 1 is connected to one of the rollers 112 in the second transfer mechanism 23 at cargo location 4 via a first transmission mechanism 25, and one of the rollers 112 in the second transfer mechanism 23 at cargo location 4 is connected to one of the rollers 112 in the second transfer mechanism 23 at cargo location 6. At this time, the rollers 112 in each of the second transfer mechanisms 23 at cargo locations 1, 4, and 6 share a moving frame 114, so that all the rollers 112 in each of the second transfer mechanisms 23 at cargo locations 1, 4, and 6 can move synchronously between a first position and a second position through the moving frame 114. Accordingly, referring to Figure 10, for the second transfer mechanisms 23 at cargo locations 3, 5, and 8, one of the rollers 112 in the second transfer mechanism 23 at cargo location 3 is connected to one of the rollers 112 in the second transfer mechanism 23 at cargo location 5 via the first transmission mechanism 25, and one of the rollers 112 in the second transfer mechanism 23 at cargo location 5 is connected to one of the rollers 112 in the second transfer mechanism 23 at cargo location 8. At this time, the rollers 112 in each of the second transfer mechanisms 23 at cargo locations 3, 5, and 8 share a moving frame 114, so that all the rollers 112 in each of the second transfer mechanisms 23 at cargo locations 3, 5, and 8 can move synchronously between the first position and the second position through the moving frame 114.

[0118] Thus, for the second transfer mechanisms 23 at cargo locations 1, 4, and 6, when one roller 112 of the second transfer mechanism 23 at cargo location 4 (which belongs to the first cargo location 21) rotates, the roller 112 at cargo location 4 can provide the power to force the rollers 112 at cargo locations 1 and 6 to rotate. Similarly, for the second transfer mechanisms 23 at cargo locations 3, 5, and 8, when one roller 112 of the second transfer mechanism 23 at cargo location 5 (which belongs to the first cargo location 21) rotates, the roller 112 at cargo location 5 can provide the power to force the rollers 112 at cargo locations 3 and 8 to rotate.

[0119] As shown in Figure 11, one of the drive rollers 117 in the second transfer mechanism 23 located at the third storage location 24 adjacent to the second storage location 22 is connected to the corresponding drive roller 117 in the second transfer mechanism 23 located at the second storage location 22 via the second transmission mechanism 26.

[0120] For example, in this embodiment, for the second transfer mechanisms 23 at warehouse positions 1, 2, and 3, one of the drive rollers 117 in the second transfer mechanism 23 at warehouse position 1 is connected to one of the drive rollers 117 in the second transfer mechanism 23 at warehouse position 2 via the second drive mechanism 26, and one of the drive rollers 117 in the second transfer mechanism 23 at warehouse position 2 is connected to one of the drive rollers 117 in the second transfer mechanism 23 at warehouse position 3. Referring to FIG11, for the second transfer mechanisms 23 at warehouse positions 6, 7, and 8, one of the drive rollers 117 in the second transfer mechanism 23 at warehouse position 6 is connected to one of the drive rollers 117 in the second transfer mechanism 23 at warehouse position 7 via the second drive mechanism 26, and one of the drive rollers 117 in the second transfer mechanism 23 at warehouse position 7 is connected to one of the drive rollers 117 in the second transfer mechanism 23 at warehouse position 8.

[0121] Thus, for the second transfer mechanisms 23 at cargo locations 1, 2, and 3, when one of the drive rollers 117 in the second transfer mechanism 23 at cargo location 22 rotates, the drive roller 117 in the second transfer mechanism 23 at cargo location 23 can provide the power to force the drive rollers 117 in the second transfer mechanisms 23 at cargo locations 1 and 3 to rotate. Similarly, for the second transfer mechanisms 23 at cargo locations 6, 7, and 8, when one of the drive rollers 117 in the second transfer mechanism 23 at cargo location 7 rotates, the drive roller 117 in the second transfer mechanism 23 at cargo location 7 can provide the power to force the drive rollers 117 in the second transfer mechanisms 23 at cargo locations 6 and 8 to rotate.

[0122] It is understood that, by adopting the above-described configuration and as seen in the description of Embodiment 2, it is only necessary to arrange a power source consisting of a roller drive motor and a wheel drive motor in the second transfer mechanism 23 at each of the first and second storage locations 21 and 22 on the transfer assembly 10. This will enable the power required for rotation to be provided to the roller 112 in the second transfer mechanism 23 at the third storage location 24 adjacent to the first storage location 21 and the transmission roller 117 in the second transfer mechanism 23 at the third storage location 24 adjacent to the second storage location 22. This will help to further reduce the construction and use costs of the storage unit 100.

[0123] Furthermore, to prevent goods from being moved out of their respective locations during transfers between different storage locations—for example, if goods are present in both storage locations 1 and 3, and all rollers 111 of the second transfer mechanism 23 in storage locations 1, 2, and 3 are rotated synchronously to transfer goods from storage location 1 to storage location 2, goods in storage location 3 may be moved out of storage location 3. The same situation may occur when transferring goods between storage locations 6, 7, and 8; between storage locations 1, 4, and 7; and between storage locations 3, 5, and 8.

[0124] Therefore, this embodiment further specifies that the first transmission mechanism 25 and the second transmission mechanism 26 described above are both unidirectional transmission mechanisms. Specifically, referring to the content shown in FIG10, the first transmission mechanism 25 may include a first ratchet sprocket 251, which is coaxially arranged with one of the rollers 112 of the second transfer mechanism 23 located at the first storage location 21, and the first ratchet sprocket 251 rotates with the corresponding roller 112, that is, the first ratchet sprocket 251 can rotate relative to the corresponding roller 112. A first pawl 252 for controlling the first ratchet sprocket 251 to rotate in a single direction is fixedly provided on the roller 112 coaxially arranged with the first ratchet sprocket 251. One of the rollers 112 in the second transfer mechanism 23 located at the third storage location 24 adjacent to the first storage location 21 is connected to the first ratchet sprocket 251 via a first chain 253.

[0125] Accordingly, referring to Figure 11, the second transmission mechanism 26 may include a second ratchet sprocket 261. This second ratchet sprocket 261 is coaxially arranged with one of the transmission rollers 117 of the second transfer mechanism 23 located at the second storage location 22, and the second ratchet sprocket 261 rotatably engages with the corresponding transmission roller 117. That is, the second ratchet sprocket 261 can rotate relative to the corresponding transmission roller 117. A second pawl 262 for controlling the rotation of the second ratchet sprocket 261 in a single direction is fixedly provided on the transmission roller 117 coaxially arranged with the second ratchet sprocket 261. One of the transmission rollers 117 in the second transfer mechanism 23 located at the third storage location 24 adjacent to the second storage location 22 is connected to the second ratchet sprocket 261 via a second chain 263.

[0126] Referring to Figures 10 or 11, the first ratchet sprocket 251, the second ratchet sprocket 261, the first pawl 252, and the second pawl 262 described in this embodiment have the same structure and working principle. The working principle of the unidirectional transmission mechanism composed of the ratchet sprocket and pawl can be referenced from the flywheel used in bicycles in the prior art. This type of transmission mechanism can achieve unidirectional power transmission.

[0127] Specifically, in the embodiments of the present invention, for the second transfer mechanisms 23 at cargo positions 1, 4, and 6, based on the aforementioned unidirectional transmission mechanism as the first transmission mechanism 25, it is possible to achieve the following: when all the rollers 112 in the second transfer mechanisms 23 at cargo positions 1 and 4 rotate synchronously to transfer goods from cargo position 1 to cargo position 4, all the rollers 112 in the second transfer mechanism 23 at cargo position 6 can remain stationary; correspondingly, when all the rollers 112 in the second transfer mechanisms 23 at cargo positions 4 and 6 rotate synchronously to transfer goods from cargo position 6 to cargo position 4, all the rollers 112 in the second transfer mechanism 23 at cargo position 1 can remain stationary.

[0128] Similarly, the principle of the second transfer mechanism 23 at cargo positions 3, 5 and 8 when transferring goods is the same as that of the second transfer mechanism 23 at cargo positions 1, 4 and 6 mentioned above, and will not be elaborated further here.

[0129] For the second transfer mechanisms 23 at cargo locations 1, 2, and 3, based on the aforementioned unidirectional transmission mechanism as the second transmission mechanism 26, it is possible to achieve the following: when all rollers 111 in the second transfer mechanisms 23 at cargo locations 1 and 2 rotate synchronously under the action of the corresponding transmission rollers 117, so as to transfer goods from cargo location 2 to cargo location 1, all transmission rollers 117 in the second transfer mechanism 23 at cargo location 3 can remain stationary, so that all rollers 111 in the second transfer mechanism 23 at cargo location 3 remain stationary; correspondingly, when all rollers 111 in the second transfer mechanisms 23 at cargo locations 2 and 3 rotate synchronously under the action of the corresponding transmission rollers 117, so as to transfer goods from cargo location 2 to cargo location 3, all transmission rollers 117 in the second transfer mechanism 23 at cargo location 1 can remain stationary, so that all rollers 111 in the second transfer mechanism 23 at cargo location 1 remain stationary.

[0130] Similarly, the principle of the second transfer mechanism 23 at cargo positions 6, 7 and 8 when transferring goods is the same as that of the second transfer mechanism 23 at cargo positions 1, 2 and 3 mentioned above, and will not be elaborated further here.

[0131] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A movable storage unit, characterized in that, include: A transfer assembly includes a first transfer mechanism defining a first conveying surface suitable for carrying goods, the first transfer mechanism being configured to convey the goods on the first conveying surface toward one of a first horizontal direction and a second horizontal direction; the first horizontal direction and the second horizontal direction are perpendicular; the transfer assembly further has a first inlet / outlet in the first horizontal direction and a second inlet / outlet in the second horizontal direction; at least one storage layer including a first storage location corresponding to and aligned with the first inlet / outlet, and a second storage location corresponding to and aligned with the second inlet / outlet; a second transfer mechanism is provided at both the first and second storage locations, the second transfer mechanism defining a second conveying surface; the second transfer mechanism is configured to convey the goods on the second conveying surface toward one of the first horizontal direction and the second horizontal direction; The first conveying surface includes conveying surface A and conveying surface B; the first transfer mechanism includes: a plurality of rollers arranged sequentially along the first horizontal direction, each roller being rotatable about its own axis; the plurality of rollers being in the same horizontal plane to define the conveying surface A; a plurality of drums arranged sequentially along the second horizontal direction, each drum being rotatable about its own axis; the plurality of drums being in the same horizontal plane to define the conveying surface B; and the plurality of drums being configured to move vertically between a first position and a second position; wherein, when the plurality of drums are in the first position, the conveying surface B is lower than the conveying surface A; when the plurality of drums are in the second position, the conveying surface B is higher than the conveying surface A; the first transfer mechanism further includes a fixed frame, a movable frame, an elastic element, and an electromagnet; the plurality of rollers are rotatably disposed on the fixed frame, the movable frame is located above the fixed frame, and the plurality of drums are rotatably disposed on the movable frame; the elastic element is configured to elastically hold the movable frame together with the plurality of drums in the second position; The electromagnet is mounted on the fixed frame and configured to generate a magnetic force that attracts the moving frame when energized. The magnetic force is greater than the elastic force applied to the moving frame by the elastic element. The second transfer mechanism and the first transfer mechanism have essentially the same structure. The storage layer also includes a third storage location adjacent to both the first and second storage locations. The second transfer mechanism is located at the third storage location. One of the rollers in the second transfer mechanism at the third storage location adjacent to the first storage location is connected to one of the rollers in the second transfer mechanism at the corresponding first storage location via a first transmission mechanism. Furthermore, the rollers in the second transfer mechanism at the third storage location adjacent to the first storage location share a moving frame with the rollers in the second transfer mechanism at the corresponding first storage location. One of the drive rollers in the second transfer mechanism at the third storage location adjacent to the second storage location is connected to one of the drive rollers in the second transfer mechanism at the corresponding second storage location via a second transmission mechanism. Both the first and second transmission mechanisms are unidirectional transmission mechanisms.

2. The movable storage unit according to claim 1, characterized in that, The first transfer mechanism further includes a roller drive assembly and a drum drive assembly; the roller drive assembly includes a roller drive motor and a transmission roller, the transmission roller is rotatably disposed on the fixed frame below the roller, the transmission roller is drive-connected to each of the rollers, and the roller drive motor is disposed on the fixed frame and drive-connected to the transmission roller; the drum drive assembly includes a drum drive motor, two adjacent drums among the plurality of drums are drive-connected, and the drum drive motor is disposed on the movable frame and drive-connected to one of the drums.

3. The movable storage unit according to claim 2, characterized in that, In the second transfer mechanism provided at each of the first and second cargo locations, both the roller drive motor and the drum drive motor are mounted on the transfer assembly. The roller drive motor in the second transfer mechanism is driven by a first docking gear, and the drum drive motor in the second transfer mechanism is driven by a second docking gear. Both the first and second docking gears are configured to move horizontally between a docking position and a non-docking position. One of the drive rollers in the second transfer mechanism is driven by a third docking gear corresponding to its own first docking gear, and the third docking gear is adapted to engage with the first docking gear in the docking position. One of the drums in the second transfer mechanism is driven by a fourth docking gear corresponding to its own second docking gear. When the plurality of drums in the second transfer mechanism are in the second position, the fourth docking gear can engage with the second docking gear in the docking position.

4. The movable storage unit according to claim 1, characterized in that, The transfer component is also configured to move back and forth in a vertical straight line; there are multiple storage layers, which are arranged sequentially along the movement path of the transfer component.

5. A storage system, characterized in that, It includes at least one movable storage unit as described in any one of claims 1 to 4.

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