Abandoned mine multi-channel spiral transportation gravity energy storage system and using method thereof

Abstract

The invention provides an abandoned mine multi-channel spiral transportation gravity energy storage system and a using method thereof.The abandoned mine multi-channel spiral transportation gravity energy storage system comprises a plurality of spiral channels and a material warehouse, the spiral channels are spirally fixed to the well wall of an abandoned mine, and the material warehouse is arranged on the outer side of the abandoned mine; a multi-stage sorting conveying plate, a conveying plate and a storage tank are arranged in the material warehouse, the storage tank is arranged between the multi-stage sorting conveying plate and the conveying plate, a roller conveying assembly is arranged in the spiral channel, and a power generation module and a driving module are arranged in the roller conveying assembly. The power generation module is used for gathering and outputting induced current after the materials are conveyed downwards from the roller conveying assembly, and the roller conveying assembly drives the materials to be conveyed upwards through the driving module. Sorting and lowering of multi-size materials and power generation through a gravity driving path are achieved, and an energy storage and power generation integrated function system is constructed by combining an upper-lower multi-layer material warehouse and a storage tank structure.

Description

Technical Field

[0001] The present invention relates to the technical field of green energy storage and mine resource recycling, and particularly relates to an energy storage system integrating multi-scale material management, path power generation, and gravitational potential energy conversion based on the transformation of abandoned mine shafts, and an operation method thereof, which is applicable to power grid peak shaving and renewable energy complementary energy storage scenarios. Background Art

[0002] With the continuous expansion of the scale of new energy access and the increasing fluctuation of the power grid load, there is an urgent need to promote efficient and economic energy storage systems. As a physical energy storage method with low energy consumption and long life, gravitational energy storage technology is becoming a key solution. Its principle is to store potential energy by lifting heavy objects and release gravitational potential energy for power generation during peak electricity consumption, thereby achieving power peak shaving and valley filling.

[0003] Existing gravitational energy storage systems generally rely on newly built vertical shafts or high towers, which not only have high costs and difficult site selection, but also have problems of waste of spatial structure. At the same time, their transportation channels are single, unable to flexibly adapt to heavy objects of different sizes, and cannot meet the requirements of refined energy storage management. Meanwhile, a large number of coal mines across the country have exhausted their resources and closed down, leaving numerous well shafts with good structures that have not been effectively utilized.

[0004] Therefore, there is an urgent need to develop a gravitational energy storage system suitable for the conditions of abandoned mines, which can take into account two-way energy flow (upward energy storage and downward power generation), multi-size material handling, and energy-saving hierarchical management to achieve a true green energy closed-loop utilization. Summary of the Invention

[0005] The object of the present invention is to provide a multi-channel spiral transportation gravitational energy storage system based on abandoned mines and its usage method in view of the deficiencies of the prior art, which makes full use of the existing shaft space, constructs multiple groups of spiral channels by attaching to the shaft wall, sets roller conveying and power generation modules inside the channels, realizes the sorting and lowering of multi-size materials and gravity-driven path power generation, and combines upper and lower multi-level material warehouses and storage tank structures to construct an integrated energy storage and power generation functional system.

[0006] To achieve the above object, the present invention provides a multi-channel spiral transportation gravity energy storage system for abandoned mines, including spiral channels and a material storage. The number of the spiral channels is multiple, and the spiral channels are fixed in a spiral shape on the shaft wall of the abandoned mine. The material storage is arranged outside the abandoned mine and is connected to the inlet and outlet of the spiral channels. A multi-stage sorting and transportation plate, a conveying plate, and storage tanks are arranged in the material storage. The storage tanks are arranged between the multi-stage sorting and transportation plate and the conveying plate. The conveying plate is connected to the inlet of the spiral channels. A drum conveying assembly is arranged in the spiral channels, and the drum conveying assembly is continuously arranged along the entire length of the upper surface of the spiral channels. A power generation module and a driving module are arranged in the drum conveying assembly. The power generation module generates induced current through the downward transportation of materials in the drum conveying assembly, and the induced current converges and is output through the power generation module. The driving module provides electrical energy through the current output by the power generation module, and the drum conveying assembly drives the materials to be transported upward through the driving module.

[0007] The number of the material storages is multiple, and the material storages are arranged at different depth levels outside the abandoned mine and are connected to the spiral channels.

[0008] The widths of the surfaces of the multiple spiral channels are different. The outlets of the multiple spiral channels are all connected to the multi-stage sorting and transportation plate. The spiral channels extend to the upper and lower ends outside the abandoned mine, and the spiral channels located outside the abandoned mine are supported by multiple support columns arranged at the upper and lower ends of the abandoned mine.

[0009] The multi-stage sorting and transportation plate includes a fixing frame and rollers. The number of the fixing frames is two, and the rollers are arranged between the two fixing frames and are axially connected to the fixing frames. The number of the rollers is multiple, and the intervals between adjacent rollers gradually increase along the material moving direction.

[0010] The conveying plate includes a fixing frame and rollers. The number of the fixing frames is two, and the rollers are arranged between the two fixing frames and are axially connected to the fixing frames. The number of the rollers is multiple, and the intervals between adjacent rollers gradually increase along the material moving direction. The conveying plates with different intervals of rollers are connected to the inlets of different spiral channels below.

[0011] The number of the storage tanks is multiple. The multi-stage sorting and transportation plate is above the storage tanks, and the conveying plate is below the storage tanks. Protection air bags are arranged at both the upper and lower ends inside the storage tanks.

[0012] The number of the drum conveying assemblies is multiple. The drum conveying assembly includes a fixing assembly and a drum assembly. The fixing assembly is fixed on the upper surface of the spiral channels, and the drum assembly is detachably connected to the fixing assembly;

[0013] The drum assembly includes a fixed base, fixed supports, a drum shaft, a rotor shaft, a stator support, and a fixed shaft. The fixed base is fixed on the fixed assembly. There are two fixed supports, which are respectively arranged at both ends of the fixed base. The two fixed bases are connected by the fixed shaft. A rotor shaft is sleeved outside the fixed shaft, and a drum shaft is sleeved outside the rotor shaft. The drum shaft drives the rotor shaft to rotate synchronously outside the fixed shaft. The length of the fixed shaft is greater than the length of the rotor shaft, and the length of the rotor shaft is greater than the length of the drum shaft. A stator support is arranged on the fixed support. The stator support surrounds the rotor shaft. The rotor shaft rotates to cut the magnetic field of the stator support to generate electric energy to form the power generation module. The current converged by the power generation module supplies power to the stator support in the reverse direction and drives the rotor shaft to rotate in the reverse direction to form the drive module;

[0014] The fixed assembly includes a limit baffle, a fixed clamping plate, and a support plate. The support plate is fixed on the upper surface of the spiral channel. The support plate is arc-shaped, and the shape of the support plate fits the upper surface of the spiral channel below it. The limit baffle is arranged along the length direction of the support plate, and the lower part of the limit baffle is fixed at both ends of the support plate and extends upward. The fixed clamping plate is arranged at the inner bottom of the limit baffle. The fixed clamping plate is provided with a plurality of convex parts and a plurality of concave parts. A plurality of grooves are arranged on the support plate, and the intervals between adjacent two grooves are the same. The side ends of the grooves correspond to the concave parts of the fixed clamping plate, and the grooves fit the fixed base.

[0015] A power connection socket is arranged on the fixed base, and a power connection plug corresponding to inserting into the power connection socket is arranged on the groove. The electric energy output by the power generation module is converged and output through the power connection socket and the power connection plug.

[0016] The present invention also includes a usage method of a multi-channel spiral transportation gravity energy storage system based on abandoned mines, including at least the following steps:

[0017] (1) Construct a plurality of spiral channels on the inner wall of the abandoned mine shaft, corresponding to material transportation paths of different sizes respectively, and arrange drum conveying components on the channels;

[0018] (2) Set up a material storage in the shaft top or underground of the shaft. The multi-stage sorting and transportation plates guide the materials into different storage tanks for storage. When in use, the materials fall from the storage tank and fall onto the transportation plate, and the transportation plate guides the materials into the corresponding channels;

[0019] (3) The materials slide down along the spiral channel under the action of gravity, while driving the drum shaft in the drum conveying component to rotate, and generating electric energy through the power generation module;

[0020] (4) Electric energy is output and collected through the power connection terminals and sockets, which can be used for system operation, monitoring, or local power supply.

[0021] (5) Materials enter the multi-stage sorting and transportation plate through the outlet of the spiral channel, slide into the storage tank, and are stored by natural accumulation. Protective airbags are provided at the upper and lower ends of the storage tank to buffer impacts.

[0022] (6) During low power periods, the drive module is used to lift the materials to the material storage for energy storage. During high power periods, the materials are released again for downward power generation, forming a complete energy storage cycle.

[0023] An abandoned mine multi-channel spiral transportation gravity energy storage system and its usage method obtained through the above technical solutions have the following beneficial effects:

[0024] 1. Design of the spiral channel structure attached to the shaft wall: Innovatively, the spiral channel is directly constructed on the wall of the abandoned mine shaft, without occupying the space of the main shaft, reducing the structural load, and enhancing safety and integration.

[0025] 2. Multi-scale material adaptation and sorting mechanism: Through the matching of the multi-stage sorting and transportation plate and different storage tanks, different spiral channel inlets are introduced to achieve natural screening of materials of different sizes, improving the operation speed and accuracy of the energy storage unit.

[0026] 3. Multi-channel independent or combined operation mechanism: Multiple spiral channels enable parallel transportation of materials of different sizes, enhancing scheduling flexibility and adapting to complex power grid load fluctuations.

[0027] 4. Physical energy storage method combining hierarchical energy storage and natural stacking: Utilizing the gravity drive and natural accumulation mode, avoiding mechanical assisted handling, and significantly reducing energy consumption.

[0028] 5. Layout of upper, lower, and multi-level material storage: Multiple material storages are set at different depths above and below the ground to achieve multi-source delivery and distributed stacking, improving space utilization efficiency.

[0029] 6. Two-way operation energy storage mode: Construct an energy closed-loop of upward drive during low power periods and downward power generation during peak periods, enhancing the power grid regulation and energy storage system response capabilities.

[0030] 7. High-efficiency construction method adapted to abandoned mines: Adopting anchoring, modular assembly, and sectional construction technologies, with good engineering adaptability and deployment replicability.

[0031] 8. Integration of the power generation function of the roller conveyor component in the spiral channel: An induction power generation structure is set in the continuous sliding path to achieve power generation while conveying, improving the energy recovery efficiency.

[0032] 9. Plug-and-play drum structure design: The drum assembly supports quick replacement and segmented maintenance, enhancing the flexibility and operating stability of the equipment. Brief Description of the Drawings

[0033] Figure 1 is a schematic structural diagram of the multi-channel spiral transportation gravity energy storage system for abandoned mines according to the present invention;

[0034] Figure 2 is a schematic structural diagram of the drum conveying assembly according to the present invention;

[0035] Figure 3 is a schematic structural diagram of the multi-stage sorting and transportation plate or conveying plate according to the present invention;

[0036] Figure 4 is a schematic structural diagram of the drum assembly according to the present invention;

[0037] Figure 5 is the present invention Figure 4 of the sectional structural diagram;

[0038] Figure 6 is a schematic structural diagram of the drum assembly according to the present invention.

[0039] In the figure, 1, spiral channel; 2, material storage; 3, abandoned mine; 4, drum conveying assembly; 5, support column; 6, power connection socket; 7, power connection column head; 21, multi-stage sorting and transportation plate; 21a, fixing frame; 21b, roller; 22, conveying plate; 23, storage tank; 41, fixing component; 41a, limiting baffle; 41b, fixing clamping plate; 41c, support plate; 42, drum assembly; 42a, fixing base; 42b, fixing support; 42c, drum shaft; 42d, rotor shaft; 42e, stator support; 42f, fixing shaft. Detailed Embodiments

[0040] The following further describes the present invention with reference to the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0041] As Figure 1-2As shown in the figure, a multi-channel spiral transportation gravity energy storage system for abandoned mines includes a spiral channel 1 and a material storage 2. The number of the spiral channels 1 is multiple, and the multiple spiral channels 1 can operate independently or in parallel jointly, supporting batch transportation or load balancing regulation. The spiral channel 1 is fixed in a spiral shape on the shaft wall of the abandoned mine 3. The material storage 2 is arranged outside the abandoned mine 3 and is constructed by the roadway of the abandoned mine 3. The material storage 2 is connected to the inlet and outlet of the spiral channel 1. A multi-stage sorting and transportation plate 21, a transportation plate 22, and a storage tank 23 are arranged in the material storage 2. The storage tank 23 is arranged between the multi-stage sorting and transportation plate 21 and the transportation plate 22. The transportation plate 22 is connected to the inlet of the spiral channel 1. A roller transportation component 4 is arranged in the spiral channel 1. The roller transportation component 4 is continuously arranged along the entire length of the upper surface of the spiral channel 1. A power generation module and a driving module are arranged in the roller transportation component 4. The power generation module generates induced current through the downward transportation of materials in the roller transportation component 4, and the induced current converges and is output through the power generation module. The driving module provides electrical energy through the current output by the power generation module. The roller transportation component 4 drives the materials to be transported upward through the driving module. During the peak period, the materials below are used to store electrical energy through the power generation module. During the low period, the electrical energy stored by the power generation module supplies power to the driving module to lift the materials and complete the energy storage.

[0042] The number of the material storages 2 is multiple. The material storages 2 are arranged at different depth levels outside the abandoned mine 3 and are connected to the spiral channel 1 to realize multi-level allocation and distributed binning.

[0043] The widths of the surfaces of the multiple spiral channels 1 are different. The outlets of the multiple spiral channels 1 are all connected to the multi-stage sorting and transportation plate 21. The spiral channel 1 extends to the upper and lower ends outside the abandoned mine 3, and the spiral channel 1 located outside the abandoned mine 3 is supported by multiple support columns 5 arranged at the upper and lower ends of the abandoned mine 3.

[0044] As Figure 3 shown, the multi-stage sorting and transportation plate 21 includes a fixing frame 21a and rollers 21b. The number of the fixing frames 21a is two. The rollers 21b are arranged between the two fixing frames 21a and are axially connected to the fixing frames 21a. The number of the rollers 21b is multiple, and the interval between two adjacent rollers 21b gradually increases along the material movement direction. Materials of different scales fall into different storage tanks 23 for storage to form automatic sorting. In order to prevent small-size materials from falling into the large-scale spiral channel 1 in advance, the interval of the rollers 21b of the transportation plate gradually increases along the transportation direction.

[0045] The conveying plate 22 includes a fixing frame 21a and rollers 21b. The number of the fixing frames 21a is two. The rollers 21b are arranged between the two fixing frames 21a and are axially connected to the fixing frames 21a. The number of the rollers 21b is multiple. The interval between two adjacent rollers 21b gradually increases along the material moving direction. The conveying plates 22 with different intervals of rollers 21b are connected to the inlets of different spiral channels 1. The material falls into different spiral channels 1 through the rollers 21b with different intervals, completing automatic sorting. And in order to prevent small-sized materials from falling into the large-scale spiral channel 1 in advance, the intervals of the rollers 21b of the conveying plate 22 gradually increase along the transportation direction.

[0046] The number of the storage tanks 23 is multiple. Above the storage tanks 23 is the multi-stage sorting and conveying plate 21. The material enters different storage tanks 23 through the rollers 21b with different intervals of the multi-stage sorting and conveying plate 21. Below the storage tanks 23 is the conveying plate 22. The material falls into the conveying plate 22 through the storage tanks 23. Protection air bags are arranged at both the upper and lower ends inside the storage tanks 23.

[0047] The number of the roller conveying assemblies 4 is multiple. The roller conveying assembly 4 includes a fixing assembly 41 and a roller assembly 42. The fixing assembly 41 is fixed on the upper surface of the spiral channel 1. The roller assembly 42 is detachably connected to the fixing assembly 41;

[0048] As Figure 4 、 Figure 5 shown, the roller assembly 42 includes a fixing base 42a, fixing supports 42b, a roller shaft 42c, a rotor shaft 42d, a stator support 42e, and a fixing shaft 42f. The fixing base 42a is fixed on the fixing assembly 41. The number of the fixing supports 42b is two. The two fixing supports 42b are respectively arranged at both ends of the fixing base 42a. And the two fixing bases 42a are connected by the fixing shaft 42f. The fixing shaft 42f is sleeved with the rotor shaft 42d. The rotor shaft 42d is sleeved with the roller shaft 42c. The roller shaft 42c drives the rotor shaft 42d to rotate synchronously outside the fixing shaft 42f. And the length of the fixing shaft 42f is greater than the length of the rotor shaft 42d. The length of the rotor shaft 42d is greater than the length of the roller shaft 42c. The stator support 42e is arranged on the fixing support 42b. The stator support 42e surrounds the rotor shaft 42d. The rotor shaft 42d rotates to cut the magnetic field of the stator support 42e to generate electric energy to form the power generation module. The current converged by the power generation module supplies power to the stator support 42e in the reverse direction. The stator support 42e drives the rotor shaft 42e to rotate in the reverse direction to form the drive module;

[0049] As Figure 6As shown, the fixing assembly 41 includes a limit baffle 41a, a fixed card plate 41b, and a support plate 41c. The support plate 41c is fixed to the upper surface of the spiral channel 1. The support plate 41c is arc-shaped, and the shape of the support plate 41c matches the upper surface of the spiral channel 1 below it. The limit baffle 41a is arranged along the length direction of the support plate 41c, and the lower end of the limit baffle 41a is fixed to the two ends of the support plate 41c and extends upward, which can prevent the material from rolling to the outside when sliding on the roller assembly 42 and sliding off the spiral channel 1. The fixed card plate 41b is arranged at the inner bottom of the limit baffle 41a, and the fixed card plate 41b is provided with multiple protrusions and multiple recesses. The support plate 41c is provided with multiple grooves 41c1, and the intervals between two adjacent grooves 41c1 are the same. The side ends of the grooves 41c1 correspond to the recesses of the fixed card plate 41b, and the grooves 41c1 match with the fixed base 42a. When in use, the fixed base 42a under the roller assembly 42 is inserted into the groove 41c1, and the fixing plate 41b is inserted into the gap between the roller assembly 42 and the limit baffle 41a to firmly fix the roller assembly 42. When the roller assembly 42 needs to be disassembled, the fixing plate 41b is removed first, and then the roller assembly 42 is removed.

[0050] The fixed base 42a is provided with an electrical connection port 6, and the groove 41c1 is correspondingly provided with an electrical connection post 7 inserted into the electrical connection port 6. The electric energy output by the power generation module is converged and output through the electrical connection port 6 and the electrical connection post 7.

[0051] This system relies on the abandoned mine 3 and its affiliated tunnels as the basic platform. Three sets of spiral channels 1 are fixedly set on the inner wall of the shaft. The cross-sectional width and slope of the channels are determined according to the material size, and are used for the diversion and transportation of large, medium and small materials respectively.

[0052] Materials enter from a material storage 2 located on the ground or in a laneway, then naturally slide down a multi-stage sorting conveyor plate 21 to a corresponding storage tank 23 for storage. When needed, the materials fall from the storage tank 23 onto a conveyor plate 22, where they are directed into the corresponding channel. Within the spiral channel, a uniformly distributed roller assembly 42, supported by a roller shaft 42c, rotates as the material slides. The rotor shaft 42d rotates relative to the stator support 42e, cutting through the magnetic field and generating an induced current.

[0053] The roller conveyor assembly 4 is a detachable plug-in structure that can be pulled out and replaced as a whole for maintenance or replacement. The generated current is connected to the power supply terminal 6 through the power supply column 7 for transmission to the ground distribution box or underground load.

[0054] The material slides down through the multi-stage sorting and transportation plate 21 and enters the storage tank 23, where it accumulates layer by layer. Protection airbags are arranged above and below the storage tank 23 to avoid impact damage. When the power grid load is at a low ebb, the current output through the power connection terminal 7 is connected to the stator support 42e to supply power to it. The stator support 42e drives the rotor shaft 42e to rotate in the reverse direction, lifting some of the materials to the upper warehouse; during the peak period, the materials are released, and the energy storage and power generation process loop is realized again.

[0055] The overall construction method of this system is "anchoring + segmented prefabrication + on-site layout + module installation", that is, after setting the anchor points on the shaft wall, the prefabricated spiral channel segments in the factory are assembled on-site section by section, and the roller modules and support structures are installed. Finally, the system is adjusted. This method has the characteristics of strong structural reliability, high efficiency in transportation and installation, and high safety in underground operations. It is suitable for the deployment requirements of shafts with different depths and geological conditions, and can be widely used in scenarios such as resource-exhausted mining areas, distributed energy stations, and urban standby energy storage.

[0056] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention. Some changes that those skilled in the art may make to some parts thereof all reflect the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A multi-channel spiral transportation gravity energy storage system for abandoned mines, comprising a spiral channel (1) and a material storage (2), characterized in that The number of the spiral channels (1) is multiple. The spiral channels (1) are fixed in a spiral shape on the wall of the abandoned mine (3). The material storage (2) is arranged outside the abandoned mine (3). The material storage (2) is connected to the inlet and outlet of the spiral channels (1). A multi-stage sorting and conveying plate (21), a conveying plate (22), and a storage tank (23) are arranged in the material storage (2). The storage tank (23) is arranged between the multi-stage sorting and conveying plate (21) and the conveying plate (22). The conveying plate (22) is connected to the inlet of the spiral channels (1). A drum conveying assembly (4) is arranged in the spiral channels (1). The drum conveying assembly (4) is continuously arranged along the entire length of the upper surface of the spiral channels (1). A power generation module and a driving module are arranged in the drum conveying assembly (4). The power generation module generates induced current through the downward conveyance of materials in the drum conveying assembly. The induced current converges and is output through the power generation module. The driving module provides electric energy through the current output by the power generation module. The drum conveying assembly (4) drives the materials to be conveyed upward through the driving module.

2. The multi-channel spiral transportation gravity energy storage system for abandoned mines according to claim 1, characterized in that The number of the material storages (2) is multiple. The material storages (2) are arranged at different depth levels outside the abandoned mine (3) and are connected to the spiral channels (1).

3. The multi-channel spiral transportation gravity energy storage system for abandoned mines according to claim 1, wherein, The widths of the surfaces of the multiple spiral channels (1) are different. The outlets of the multiple spiral channels (1) are all connected to the multi-stage sorting and conveying plate (21). The spiral channels (1) extend to the upper and lower ends outside the abandoned mine (3). The spiral channels (1) located outside the abandoned mine (3) are supported by multiple support columns (5) arranged at the upper and lower ends of the abandoned mine (3).

4. A multi-channel spiral transportation gravity energy storage system for abandoned mines according to claim 1, characterized in that, The multi-stage sorting and conveying plate (21) includes a fixing frame (21a) and rollers (21b). The number of the fixing frames (21a) is two. The rollers (21b) are arranged between the two fixing frames (21a) and are axially connected to the fixing frames (21a). The number of the rollers (21b) is multiple. The interval between two adjacent rollers (21b) gradually increases along the material moving direction.

5. A multi-channel spiral transportation gravity energy storage system for abandoned mines according to claim 1, characterized in that, The conveying plate (22) includes a fixing frame (21a) and rollers (21b). The number of the fixing frames (21a) is two. The rollers (21b) are arranged between the two fixing frames (21a) and are axially connected to the fixing frames (21a). The number of the rollers (21b) is multiple. The interval between two adjacent rollers (21b) gradually increases along the material moving direction. The inlets of different spiral channels (1) are connected to the lower part of the conveying plate (22) with rollers having different intervals.

6. A multi-channel spiral transportation gravity energy storage system for abandoned mines according to claim 1, characterized in that, The number of the storage tanks (23) is multiple. The multi-stage sorting and conveying plate (21) is above the storage tanks (23). The conveying plate (22) is below the storage tanks (23). Protection air bags are arranged at both the upper and lower ends inside the storage tanks (23).

7. A multi-channel spiral transportation gravity energy storage system for abandoned mines according to claim 1, characterized in that, The number of the roller conveying assemblies (4) is multiple. The roller conveying assembly (4) includes a fixing assembly (41) and a roller assembly (42). The fixing assembly (41) is fixed on the upper surface of the spiral channel (1), and the roller assembly (42) is detachably connected to the fixing assembly (41). The roller assembly (42) includes a fixed base (42a), fixed supports (42b), a roller shaft (42c), a rotor shaft (42d), a stator support (42e), and a fixed shaft (42f). The fixed base (42a) is fixed on the fixing assembly (41). The number of the fixed supports (42b) is two. The two fixed supports (42b) are respectively arranged at both ends of the fixed base (42a), and the two fixed bases (42a) are connected by the fixed shaft (42f). A rotor shaft (42d) is sleeved outside the fixed shaft (42f), and a roller shaft (42c) is sleeved outside the rotor shaft (42d). The roller shaft (42c) drives the rotor shaft (42d) to rotate synchronously outside the fixed shaft (42f). The length of the fixed shaft (42f) is greater than the length of the rotor shaft (42d), and the length of the rotor shaft (42d) is greater than the length of the roller shaft (42c). A stator support (42e) is arranged on the fixed support (42b). The stator support (42e) surrounds the rotor shaft (42d). The rotor shaft (42d) rotates to cut the magnetic field of the stator support (42e) to generate electric energy to form the power generation module. The current converged by the power generation module reversely supplies power to the stator support (42e) and drives the rotor shaft (42e) to rotate reversely to form the drive module. The fixing assembly (41) includes a limit baffle (41a), a fixed clamping plate (41b), and a support plate (41c). The support plate (41c) is fixed on the upper surface of the spiral channel (1). The support plate (41c) is arc-shaped, and the shape of the support plate (41c) fits the upper surface of the spiral channel (1) below it. The limit baffle (41a) is arranged along the length direction of the support plate (41c), and the lower part of the limit baffle (41a) is fixed at both ends of the support plate (41c) and extends upward. The fixed clamping plate (41b) is arranged at the inner bottom of the limit baffle (41a). The fixed clamping plate (41b) is provided with a plurality of convex parts and a plurality of concave parts. A plurality of grooves (41c1) are arranged on the support plate (41c), and the intervals between adjacent two grooves (41c1) are the same. The side end of the groove (41c1) corresponds to the concave part of the fixed clamping plate (41b), and the groove (41c1) fits the fixed base (42a).

8. A multi-channel spiral transportation gravity energy storage system for abandoned mines according to claim 7, characterized in that A power connection socket (6) is arranged on the fixed base (42a), and a power connection terminal (7) inserted into the power connection socket (6) is correspondingly arranged on the groove (41c1). The electric energy output by the power generation module is converged and output through the power connection socket (6) and the power connection terminal (7).

9. A method of using a multi-channel spiral transportation gravity energy storage system based on abandoned mines, applying the energy storage system according to any one of claims 1-8, characterized in that, including at least the following steps: (1) Construct multiple spiral channels on the inner wall of the abandoned mine shaft, corresponding to material conveying paths of different sizes respectively, and arrange roller conveying components on the channels; (2) Set up a material storage at the top or underground of the shaft. The multi-stage sorting and transportation plates guide the materials into different storage tanks for storage. When in use, the materials fall from the storage tank into the transportation plate, and the transportation plate guides the materials into the corresponding channels; (3) The materials slide down along the spiral channels under the action of gravity, while driving the rotation of the roller shafts in the roller conveying components, and generating electric energy through the power generation module; (4) The electric energy is output and converged through the power connection head and the power connection notch, and can be used for system operation, monitoring or local power supply; (5) The materials enter the multi-stage sorting and transportation plates through the spiral channel outlets, slide into the storage tanks and are stored by natural accumulation. Protective air bags are provided at the upper and lower ends of the storage tanks to buffer the impact; (6) During the low power period, the driving module is used to lift the materials to the material storage for energy storage, and the materials are released again during the high power period for downward power generation, forming a complete energy storage cycle.

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