A mobile shared power drive device and its driving method for a multi-layer conveyor system

Abstract

This invention discloses a mobile shared power drive device and its driving method for multi-layer conveyor systems, belonging to the field of material conveying technology. It includes a lifting drive unit, a roller drive assembly, and a tension adjustment module. The roller drive assembly comprises a horizontal movement module, a powered roller module, and a roller positioning seat. The lifting drive unit drives the roller drive assembly to move vertically to align with different layers of conveyor belts. The horizontal movement module drives the powered roller module to reciprocate horizontally, allowing it to extend into a working position and retract to avoid obstruction. When the driven roller of the powered roller module extends into the working position, the free end of its drive shaft is supported and locked by the roller positioning seat of the corresponding layer. The tension adjustment module is used to fine-tune the position of the driven roller, ensuring it forms a pre-tensioned contact with the conveyor belt. This invention uses a single mobile drive device to cyclically serve multiple layers of conveyor belts, replacing the traditional one-layer-one-drive mode, significantly reducing equipment cost and complexity, and improving space utilization and system reliability.

Description

Technical Field

[0001] This invention relates to the field of agricultural mechanization and automated aquaculture equipment technology, and more particularly to a mobile shared drive device capable of moving between multiple conveyor belts in a three-dimensional aquaculture system and providing power to each layer. Background Technology

[0002] In intensive, factory-style, multi-layered, three-dimensional aquaculture models, conveyor belt systems are widely used for automated feeding, transfer, and cleaning of materials to maximize land utilization and output per unit area. For example, in the large-scale farming of saprophagous insects such as black soldier flies and mealworms, multi-layered stacked conveyor belts are often used to carry farming trays, automating processes such as feed distribution and insect excrement cleaning. Patent CN120615871 A, invention title: A precision-controlled assembly line-style three-dimensional insect farming system, includes two or more three-dimensional insect farming structures and several layered synchronous feeding and insect-discharging devices. The three-dimensional insect farming structures include a farming frame and several layers of partitioned continuous farming structures; each partitioned continuous farming structure includes a farming space divided into at least two farming zones, each zone equipped with an environmental control mechanism, and at least one farming zone equipped with a first material loosening mechanism; at least one farming zone has isolation doors at both ends. The system design of this invention adopts a modular concept, with each component being independently replaceable or upgraded to adapt to the specific needs of different insect species; customized breeding of special insects can be achieved by adding environmental control parameters or additional functional modules. This type of system represents the industry's trend towards automation.

[0003] However, existing multi-layer conveyor systems generally suffer from a structural contradiction in their power configuration, making it difficult to balance cost and efficiency. This is specifically reflected in the following two aspects: First, there is a conflict between space constraints and drive performance. To accommodate as many breeding layers as possible within a limited factory height, the clearance between layers is typically reduced to only 30-60 cm. This confined space severely limits the size of traditional drive rollers. The diameter of the drive roller is directly proportional to the transmitted frictional drive torque; a smaller diameter leads to insufficient drive wrap angle and a small contact area, resulting in low drive torque and easy conveyor belt slippage. This directly restricts the effective length and load capacity of a single feeding or conveying operation, forcing the system to increase feeding frequency or reduce operating speed, thus affecting overall operational efficiency. Although designs exist to compensate for friction by increasing clamping force, this accelerates conveyor belt wear and may pose a risk of crushing live insects or fragile materials being transported.

[0004] Secondly, existing vertical aquaculture systems each have an independent power unit for each conveyor belt, including a motor, reducer, transmission mechanism, and independent electrical control system. This one-layer-one-drive architecture leads to a linear increase in initial investment as the number of layers increases, with a large amount of redundant core components such as motors, reducers, and frequency converters, resulting in high costs. Furthermore, multiple power units require complex synchronous control and coordination, electrical wiring is cumbersome, system reliability is challenged, daily maintenance points increase, and overall energy consumption remains high.

[0005] Therefore, existing technologies lack a new paradigm of efficient, intensive, and intelligent power drive that can fundamentally solve the problem of ensuring sufficient driving force and reducing the cost and complexity of multi-story power systems in limited spaces. Summary of the Invention

[0006] This invention provides a mobile shared power drive device and its driving method for multi-layer conveying systems, which solves the problems of low roller power, large equipment investment, and cumbersome operation in existing multi-layer three-dimensional conveying systems.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A mobile shared power drive device for a multi-layer conveyor system includes: The lifting drive unit is installed along the floor height direction of the conveying system; At least one roller drive assembly is installed on the lifting drive unit and is driven by the lifting drive unit to move in the vertical direction to align with the conveyor belts of different layers; The roller drive assembly includes: a horizontal movement module, a power roller module, and a roller positioning seat. The horizontal movement module is disposed on the lifting drive unit. The power roller module is mounted on the horizontal movement module and is driven by the horizontal movement module to reciprocate in the horizontal direction, having an extended working position and a retracted avoidance position. The power roller module includes a roller drive motor, a transmission shaft driven by the roller drive motor, and a drive roller sleeved on the transmission shaft. The roller positioning seat is correspondingly disposed on the horizontal moving module. When the power roller module moves to the extended working position, it is used to support and lock the free end of the drive shaft. The tension adjustment module is connected to both ends of the power roller module and is used to drive the power roller module to finely adjust its horizontal position in the extended working position so that the drive roller forms a pre-tensioned contact with the conveyor belt of the corresponding layer.

[0008] Furthermore, preferably: the horizontal movement module includes a mounting frame, a linear slide rail, and a slide rail power mechanism. The linear slide rail is mounted on the mounting frame, and a sliding plate is provided on the slider of the linear slide rail. The sliding plate is mounted together with the power roller module, and the slide rail power mechanism is mounted together with the slider.

[0009] Furthermore, preferably: the linear slide rail is a ball-bearing linear slide rail; and / or the slide rail power mechanism adopts a rack and pinion transmission mechanism.

[0010] Furthermore, preferably, the roller positioning seat is provided with a bearing seat or V-shaped groove that mates with the free end of the drive shaft.

[0011] Furthermore, preferably, the tension adjustment module is an electric push rod, a pneumatic cylinder, or a hydraulic cylinder, and there is at least one electric push rod, pneumatic cylinder, or hydraulic cylinder.

[0012] Furthermore, preferably: the electric push rod, cylinder or hydraulic cylinder is one, one end of which is installed together with the horizontal moving module and the other end of which is installed together with the power roller module; or the electric push rod, cylinder or hydraulic cylinder is two, one of which is installed together with the horizontal moving module and the other end of which is installed together with the power roller module, and the other one end of which is fixed together with the roller positioning seat and the other end of which is fixed to the mounting frame.

[0013] Furthermore, preferably, the tension adjustment module is equipped with a positioning guide mechanism.

[0014] Furthermore, preferably, the bottom of the lifting drive unit is provided with a horizontal moving mechanism to drive the lifting drive unit to move back and forth between different devices.

[0015] The present invention also provides a multi-layer three-dimensional aquaculture system, which uses the mobile shared power drive device of the present invention to provide driving force for the conveyor belts of each layer.

[0016] The present invention also provides a power-sharing drive method for a multi-layer conveyor system, the multi-layer conveyor system comprising at least two layers of conveyor belts arranged along the layer height direction, the method providing power to each layer of the conveyor belts through a single movable drive unit, comprising the following steps: S1. Drive unit in place: Control the movable drive unit to move vertically so that its power output component is aligned with the conveyor belt drive position of the target layer; S2. Power interface docking: Control the horizontal movement mechanism of the movable drive unit to drive the power output component to move horizontally from the clearance position to the working position to form a power connection with the target layer conveyor belt; S3. Interface locking and tensioning: At the working position, the free end of the power output component is locked to the positioning structure set on the frame of the multi-layer conveyor system, and a tensioning force is applied to the power output component to make it form a preset contact pressure with the target layer conveyor belt; S4. Driving and Conveying: Start the power output component to drive the target layer conveyor belt to run and complete the preset conveying task; S5. Disengagement and Reset: Stop the power output component, release the locking and tension of the power output component, and control its horizontal movement back to the avoidance position; S6. Serve the next layer: Repeat steps S1 to S5 to enable the movable drive unit to power the conveyor belt of the next target layer in sequence.

[0017] Furthermore, preferably: in step S3, the tension force is applied to the power output component in the working position through an independent tension adjustment module, and the magnitude of the tension force is dynamically adjusted according to the load of the target layer conveyor belt or a preset tension value.

[0018] Furthermore, preferably: the power output component is a drive roller, and in step S3, the interface is locked by locking the free end of the drive roller's transmission shaft to the bearing seat or slot.

[0019] The beneficial effects of this invention are: The mobile shared power drive device for multi-layer conveying systems provided by this invention, compared with the traditional fixed power configuration mode of one drive per layer, achieves a fundamental transformation from distributed redundant drive to centralized precision servo through the deep integration of structural innovation and intelligent control, bringing significant multi-dimensional and systematic benefits, specifically reflected in the following aspects: 1. Significantly reduce equipment manufacturing costs and total lifecycle investment. The power drive device of the present invention, in a three-dimensional system with multiple conveyor belts, only requires the investment of one drive assembly (including lifting, horizontal movement, power roller and other modules) to replace the original multiple independent drive systems. The equipment procurement cost is greatly reduced, and the hardware scale, software complexity and on-site wiring work of the control system are greatly reduced. It fundamentally reduces the probability of failure caused by too many nodes, significantly enhances the overall reliability of the system, and greatly reduces the maintenance cost and difficulty.

[0020] 2. Overcoming height limitations to achieve the optimal solution for drive performance and space utilization. In traditional designs, the narrow interlayer clearance is a major bottleneck restricting the size of the drive roller and thus limiting the driving force. This invention introduces a movable roller drive assembly, allowing for the use of a single, high-performance, large-diameter drive roller. This roller is inserted into the working position of a layer only when serving that layer, forming effective contact with the conveyor belt. After work is completed, it retracts and moves away, its physical dimensions completely unrestricted by the fixed layer height. Therefore, this invention can provide each layer of the conveyor belt with sufficient driving torque and contact wrap angle comparable to large single-layer equipment, even in the most compact interlayer layout. This fundamentally solves the contradiction between small space and high power, ensuring stable, efficient, and slip-free operation of the conveyor belt under heavy loads and long distances.

[0021] 3. Provides precise and stable power engagement and transmission, ensuring efficient system operation. This device ensures precise and reliable power transmission through the coordinated design of the roller positioning seat and the tension adjustment module. When the drive roller module moves horizontally to the extended working position, the free end of the drive shaft is precisely guided and locked into the roller positioning seat, greatly enhancing transmission rigidity and eliminating bending deformation and vibration of the roller under heavy loads, laying the foundation for smooth transmission. Subsequently, the tension adjustment module can precisely adjust the roller position to achieve the optimal pre-tension contact pressure between the drive roller and the conveyor belt. This combination of rigid locking and flexible tension maximizes effective friction to prevent slippage and avoids excessive wear of the conveyor belt or equipment damage caused by overpressure, achieving the best balance between power transmission efficiency and equipment lifespan.

[0022] 4. Enhance the modularity, standardization, and flexibility of system design. The mobile shared drive unit of this invention, as a highly integrated functional module, can be flexibly combined with standardized conveyor line frames of different heights, lengths, and numbers of layers to quickly construct diverse multi-layer conveyor systems. This design concept of decoupling the drive module from the structural module enables equipment manufacturers to achieve standardized mass production of core drive components, reducing production costs; at the same time, it provides users with the flexibility to expand the number of layers as needed without redesigning the drive system. The device's mobility also gives it the potential to serve multiple parallel devices or production lines, further improving equipment utilization and investment value. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A perspective view of the mobile shared power drive device of the present invention; Figure 2 This is another perspective view of the mobile shared power drive device of the present invention; Figure 3 This is a structural diagram of one embodiment of the mobile shared power drive device of the present invention; Figure 4 This is a structural diagram of another embodiment of the mobile shared power drive device of the present invention; In the diagram, 1 is the mounting frame, 2 is the ball-bearing linear guide rail, 3 is the gear and rack mechanism, 4 is the modular housing, 5 is the roller drive motor, 6 is the moving hydraulic cylinder, 7 is the drive roller, 8 is the moving module servo motor, 9 is the positioning guide mechanism, 10 is the fixed hydraulic cylinder, 11 is the drive shaft, 12 is the bearing seat, 13 is the sliding plate, 14 is the hydraulic lifting platform, 15 is the conveyor belt aquaculture layer, and 16 is the horizontal track. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are also described.

[0026] Example 1 This embodiment provides an application such as Figure 1 and 2 The power drive unit shown is for a multi-layered, three-dimensional black soldier fly farming equipment, which has three parallel conveyor belt farming layers 15. This drive unit provides power to these three conveyor belts for feeding (discharging feed) and removing insect sand.

[0027] like Figure 1-4 As shown, a mobile shared power drive device for a multi-layer conveying system includes a lifting drive unit, a roller drive assembly, and a tension adjustment module.

[0028] The lifting drive unit is set along the height direction of the conveying system. The function of the lifting drive unit is to provide vertical movement. A conventional lifting mechanism can be used, such as a hydraulic lifting platform 14, a winch mechanism, a screw / electric screw mechanism, a scissor linkage mechanism, etc. In this embodiment, a hydraulic lifting platform 14 is used.

[0029] The roller drive assembly, mounted on the lifting drive unit, is driven by the lifting drive unit to move vertically to align with the conveyor belts of different layers. The number and installation position of the roller drive assemblies can be set according to actual conditions. For example, two or more can be vertically arranged to simultaneously drive the movement of multiple breeding layers, achieving simultaneous multi-layer feeding. Alternatively, two roller drive assemblies can move in opposite directions, achieving feeding and discharging operations simultaneously. Multiple roller drive assemblies can also be horizontally arranged to simultaneously feed or discharge different breeding equipment. This embodiment uses a single roller drive assembly to illustrate the concept of the invention.

[0030] The roller drive assembly includes: a horizontal movement module, a power roller module, and a roller positioning seat. The horizontal movement module is mounted on the lifting drive unit. The power roller module is mounted on the horizontal movement module and is driven by the horizontal movement module to reciprocate in the horizontal direction, having an extended working position and a retracted avoidance position. The power roller module includes a roller drive motor 5, a transmission shaft 11 driven by the roller drive motor 5, and a drive roller 7 sleeved on the transmission shaft 11. The roller positioning seat is correspondingly disposed on the horizontal movement module and is used to support and lock the free end of the transmission shaft 11 when the power roller module moves to the extended working position.

[0031] The horizontal movement module primarily drives the power roller module to move horizontally; any device capable of horizontal movement can be used. In this embodiment, the horizontal movement module comprises a robust mounting frame 1, whose bottom is fixedly connected to the lifting drive unit. Two sets of ball-bearing linear guide rails 2 are mounted parallel to each other on the mounting frame 1, and a sliding plate 13 is fixedly connected to the sliders of these two sets of guide rails. The slide rail power mechanism driving the horizontal movement of the sliding plate 13 employs a gear and rack mechanism 3 driven by a servo motor 8 of the movement module. The servo motor 8 of the movement module is fixed to the mounting frame 1, and the drive gear on its output shaft meshes with a precision rack fixed to the sliding plate 13.

[0032] The system employs a ball-bearing linear guide rail 2: compared to ordinary guide rails, it boasts advantages such as extremely low friction coefficient, high motion sensitivity, high positioning accuracy, and long service life, ensuring that the powered roller module can quickly and accurately reach its extended or retracted position, reducing energy loss and wear. A gear and rack mechanism 3 is also used: it offers advantages such as precise transmission, no slippage, high load-bearing capacity, compact structure, and simple maintenance. Combined with the servo motor 8 of the moving module, it can precisely control the extension / retraction speed and position of the powered roller and maintain it at any intermediate position, enabling complex docking processes.

[0033] The powered roller module is the direct power output component, specifically consisting of a modular housing 4, inside which a high-power three-phase asynchronous motor (or variable frequency motor) serves as the roller drive motor 5. The roller drive motor 5 drives a high-strength transmission shaft 11 via a reducer (not shown in the figure) and a coupling. One end of the transmission shaft 11 is supported on the housing by a self-aligning roller bearing, and a large-diameter drive roller 7 is fitted in the middle. The surface of the drive roller 7 is coated with a high-friction, wear-resistant polyurethane coating. The entire powered roller module is fixed to the sliding plate 13 via its housing base.

[0034] The roller positioning seat is a key structure to ensure the rigidity and stability of power transmission. Specifically, the roller positioning seat includes a bearing seat 12. When the power roller module is in the extended working position, the end of the transmission shaft 11 is pushed into the bearing seat 12 and fixed and locked.

[0035] Using bearing housing 12 as the positioning structure offers significant advantages over simple V-groove or flat support, including extremely high positioning accuracy, the ability to withstand combined radial and axial loads, low frictional loss, and long service life. It transforms the power roller module from a cantilever beam support to a simply supported beam support, greatly enhancing the rigidity of the transmission system, eliminating roller deflection and vibration under heavy loads, and ensuring smooth and efficient power transmission. This makes it particularly suitable for applications requiring long-term, heavy-load operation.

[0036] The tension adjustment module is used to fine-tune the contact pressure between the drive roller 7 and the conveyor belt after power connection. Specifically, the tension adjustment module consists of an electric push rod, a pneumatic cylinder, or a hydraulic cylinder, with at least one of these components. The number and connection method of the actuators in the tension adjustment module can be selected according to the specific circumstances.

[0037] 1. A hydraulic cylinder (or pneumatic cylinder or electric push rod) is connected at one end to the mounting frame 1 of the horizontal moving module and at the other end to the frame of the power roller module. When the actuator extends or retracts, it directly drives the power roller module to generate a small angular displacement or translation around its connection point with the sliding plate 13, thereby changing the gap between the drive roller 7 and the conveyor belt to achieve tensioning or loosening. The structure is the simplest, with the fewest parts, the lowest cost, and the control logic is clear.

[0038] 2. A combination of two hydraulic cylinders (or pneumatic cylinders or electric actuators) Mobile hydraulic cylinder 6 (or pneumatic cylinder or electric push rod): One end is connected to the mounting frame 1 of the horizontal moving module, and the other end is connected to the frame of the power roller module; it is mainly responsible for the application and release of the main, macroscopic tension force.

[0039] Fixed hydraulic cylinder 10 (or pneumatic cylinder or electric push rod): one end is fixed on the roller positioning seat, and the other end is fixed on the mounting frame 1 to finely adjust the position of the roller positioning seat.

[0040] By decoupling the clamping force control (handled by the moving hydraulic cylinder 6 and the fixed hydraulic cylinder 10) from the positioning reference fine-tuning (handled by the fixed hydraulic cylinder 10), the fixed hydraulic cylinder 10 can adjust the final position of the roller positioning seat with extreme precision. This allows for nanometer-level calibration of the support point at the free end of the drive shaft 11 after it is locked. This actively eliminates minor misalignments between the drive shaft 11 and the positioning seat caused by accumulated errors in machining and installation or long-term wear, ensuring absolute concentricity of the supports at both ends of the drive shaft 11 and greatly reducing internal stress and wear. During operation, if the frame undergoes slight deformation due to temperature or load changes, the fixed hydraulic cylinder 10 can dynamically adjust based on sensor feedback to maintain the optimal alignment of the system, effectively increasing stability and lifespan.

[0041] An independent linear guide rail, guide rod sleeve, or precision slide table positioning and guiding mechanism 9 is added to the hydraulic cylinder (or air cylinder or electric push rod) (whether single rod or double rod) of the tension adjustment module or to the components connected thereto, specifically for constraining the movement direction of the actuator output end or the component it pushes.

[0042] The positioning guide mechanism 9 ensures that the thrust / tension generated by the actuator is transmitted strictly along the design direction (usually horizontal or a predetermined straight line), preventing lateral bending, torsion, or jamming due to force. It eliminates the radial oscillation that may occur on the piston rod of the actuator (especially cylinders and hydraulic cylinders), ensuring the straightness of the motion trajectory and the repeatability of the positioning accuracy when the power roller module or roller positioning seat is making tension fine adjustments. The guide mechanism bears the lateral force during operation, protecting the piston rod and seals of the actuator, so that they only bear pure axial force, thereby significantly improving the mechanical rigidity of the entire tensioning system and the service life of the actuator.

[0043] like Figure 4 As shown, to maximize the value of the shared drive unit, this device can be further extended as follows: a horizontal moving mechanism is installed below the bottom mounting plate of the lifting drive unit. The horizontal moving mechanism can use a conventional horizontal rail 16 or moving wheels located below the bottom mounting plate of the drive unit. This embodiment uses a horizontal rail 16, which includes a heavy-duty guide rail laid on the ground, a set of traveling wheels installed under the bottom mounting plate, and a gear and rack drive system driven by a geared motor. A PLC can control this mechanism, enabling the entire lifting drive unit, along with its roller drive assembly, to move along the heavy-duty guide rail between multiple sets of parallel aquaculture equipment.

[0044] The addition of a bottom horizontal moving mechanism upgrades this device from a fixed equipment shared between floors to a shared equipment room throughout the entire workshop, further reducing equipment investment and floor space to the limit, achieving the pinnacle of resource intensification, and is particularly suitable for the batch and zoned breeding management model of large-scale farms.

[0045] In this embodiment, the shared drive unit is installed together with the fabric carrier, which allows for the sharing of the lifting platform and horizontal guide rail, thus saving on equipment investment.

[0046] This invention also provides a multi-layer three-dimensional aquaculture system, which uses a mobile shared power drive device to provide driving force for the conveyor belts of each layer. For its specific structure, please refer to the following related technologies: Application No. 202510903409.2, Invention Title: A Precision Control Flow Line Three-Dimensional Aquaculture System for Insects; Application No. 2025109034158, Invention Title: A Zoned Continuous Aquaculture Mechanism and Aquaculture System; Application No. 2025120351263, Invention Title: A Micro-Powered Demountable Continuous Three-Dimensional Aquaculture System for Insects.

[0047] The following describes the operation process of the present invention using a three-layer three-dimensional aquaculture system: A power-sharing drive method for a multi-layer conveyor system, the multi-layer conveyor system comprising at least two layers of conveyor belts arranged along the layer height direction, the method employing... Figure 1 A mobile shared power drive unit provides power to each layer of the conveyor belt, comprising the following steps: S1. Drive unit in place: Control the lifting drive unit to move vertically so that the roller drive assembly it carries is aligned with the conveyor belt drive position of the target layer; S2. Power interface docking: Control the horizontal movement module to drive the power roller module to move horizontally from the clearance position to the working position to form a power connection with the target layer conveyor belt; S3. Interface locking and tensioning: In the working position, the free end of the power roller module is locked to the roller positioning seat set on the frame of the multi-layer conveyor system, and the tension adjustment module is activated to apply the tension force to the power output component in the working position. The magnitude of the tension force is dynamically adjusted according to the load of the target layer conveyor belt or the preset tension value. S4. Driving and Conveying: Start the power roller module to drive the target layer conveyor belt to run and complete the preset conveying task; S5. Disengagement and Reset: Stop the power roller module, release the locking and tension of the power roller module, and control its horizontal movement back to the avoidance position; S6. Serve the next layer: Repeat steps S1 to S5 to enable the movable drive unit to power the conveyor belt of the next target layer in sequence.

[0048] In this embodiment, the three-layer system requires only one set of mobile shared power drive device, which directly saves about 2 / 3 of the hardware cost of drive components compared with the traditional three sets of one-layer-one-drive system.

[0049] The drive control of the entire conveying system has been simplified from coordinating three independent sets of equipment to sequentially controlling the trajectory and status of a single movable unit. This reduces the number of system nodes, lowers the risk of failures caused by multi-device coordination breakdowns, and enhances overall reliability. The shared drive roller 7 can be designed for optimal performance (large diameter, high torque) without being limited by the fixed-layer installation space. In this embodiment, the drive roller 7 has a diameter of up to 300mm, providing significantly greater driving force and wear resistance than traditional small rollers within a layer, ensuring stability during heavy-load starts and high-speed operation, and overcoming the limitations imposed by layer height on drive performance.

[0050] By combining rigid locking of bearing housing 12 with dynamic tensioning based on force feedback, the core contradiction of slippage and wear in friction drive is completely resolved. Locking ensures the rigidity of the transmission, while dynamic tensioning provides precise friction control, maximizing power transmission efficiency and protecting the conveyor belt and drive roller 7, thus extending the service life of the equipment.

[0051] The core of this invention is a single drive system that provides on-demand service. When increasing the number of service layers, only the stroke of the lifting mechanism needs to be extended and corresponding positioning seats added; no additional drive unit is required, resulting in extremely low expansion costs. This method can also be easily adapted to other scenarios requiring multi-layer conveying, such as automated parking systems, multi-layer production lines, and automated warehouses, demonstrating its high versatility.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mobile shared power drive device for a multi-layer conveyor system, characterized in that, include: The lifting drive unit is installed along the floor height direction of the conveying system; At least one roller drive assembly is installed on the lifting drive unit and is driven by the lifting drive unit to move in the vertical direction to align with the conveyor belts of different layers; The roller drive assembly includes: a horizontal movement module, a power roller module, and a roller positioning seat. The horizontal movement module is disposed on the lifting drive unit. The power roller module is mounted on the horizontal movement module and is driven by the horizontal movement module to reciprocate in the horizontal direction, having an extended working position and a retracted avoidance position. The power roller module includes a roller drive motor, a transmission shaft driven by the roller drive motor, and a drive roller sleeved on the transmission shaft. The roller positioning seat is correspondingly disposed on the horizontal moving module. When the power roller module moves to the extended working position, it is used to support and lock the free end of the drive shaft. The tension adjustment module is connected to both ends of the power roller module and is used to drive the power roller module to finely adjust its horizontal position in the extended working position so that the drive roller forms a pre-tensioned contact with the conveyor belt of the corresponding layer.

2. The mobile shared power drive device according to claim 1, characterized in that: The horizontal movement module includes a mounting frame, a linear slide rail, and a slide rail power mechanism. The linear slide rail is mounted on the mounting frame, and a sliding plate is provided on the slider of the linear slide rail. The sliding plate is mounted together with the power roller module, and the slide rail power mechanism is mounted together with the slider.

3. The mobile shared power drive device according to claim 2, characterized in that: The linear slide rail is a ball-bearing linear slide rail; and / or the slide rail power mechanism adopts a rack and pinion transmission mechanism.

4. The mobile shared power drive device according to claim 1, characterized in that: The roller positioning seat is provided with a bearing seat or V-shaped groove that mates with the free end of the drive shaft.

5. The mobile shared power drive device according to claim 1, characterized in that: The tension adjustment module is an electric push rod, a pneumatic cylinder, or a hydraulic cylinder, and there is at least one electric push rod, a pneumatic cylinder, or a hydraulic cylinder. When the electric push rod, cylinder or hydraulic cylinder is a single unit, one end of it is installed together with the horizontal moving module, and the other end is installed together with the power roller module; When there are two electric push rods, cylinders or hydraulic cylinders, one end of one is installed with the horizontal moving module and the other end is installed with the power roller module, and one end of the other is fixed with the roller positioning seat and the other end is fixed on the mounting frame.

6. The mobile shared power drive device according to claim 5, characterized in that: The tension adjustment module is equipped with a guide mechanism.

7. The mobile shared power drive device according to any one of claims 1-6, characterized in that: The bottom of the lifting drive unit is provided with a horizontal moving mechanism to drive the lifting drive unit to move back and forth between different devices.

8. A multi-layer three-dimensional aquaculture system, characterized in that, The movable shared power drive device as described in any one of claims 1-7 is used to provide driving force for each layer of the conveyor belt.

9. A power-sharing drive method for a multi-layer conveyor system, the multi-layer conveyor system comprising at least two layers of conveyor belts arranged along the layer height direction, characterized in that: The method provides power to each layer of the conveyor belt via a single movable drive unit, and includes the following steps: S1. Drive unit in place: Control the movable drive unit to move vertically so that its power output component is aligned with the conveyor belt drive position of the target layer; S2. Power interface docking: Control the horizontal movement mechanism of the movable drive unit to drive the power output component to move horizontally from the clearance position to the working position to form a power connection with the target layer conveyor belt; S3. Interface locking and tensioning: At the working position, the free end of the power output component is locked to the positioning structure set on the frame of the multi-layer conveyor system, and a tensioning force is applied to the power output component to make it form a preset contact pressure with the target layer conveyor belt; S4. Driving and Conveying: Start the power output component to drive the target layer conveyor belt to run and complete the preset conveying task; S5. Disengagement and Reset: Stop the power output component, release the locking and tension of the power output component, and control its horizontal movement back to the avoidance position; S6. Serve the next layer: Repeat steps S1 to S5 to enable the movable drive unit to power the conveyor belt of the next target layer in sequence.

10. The power-sharing drive method according to claim 9, characterized in that: In step S3, the tension force is applied to the power output component in the working position through an independent tension adjustment module. The magnitude of the tension force is dynamically adjusted according to the load of the target layer conveyor belt or the preset tension value.

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