Method and device for gravity block automatic circulation energy storage

Abstract

The invention discloses a gravity block automatic circulation energy storage method and device.The gravity block automatic circulation energy storage device comprises a gravity block, a chain set, a driving wheel set, a guide wheel set, a tensioning wheel set, a loading and unloading belt, a transfer belt, a warehouse, a driving unit and a limiting track, a motor is driven to be matched with a linkage shaft of the chain set so that the position of the gravity block can be adjusted, and the transfer belt is connected with the loading and unloading belt; the loading and unloading belt is used for conveying the gravity blocks to the connecting points of the chain sets from the warehouse, and the warehouse is contained in the storage module of the gravity blocks and matched with the crocodile mouth clamps on the upper portions of the gravity blocks through the limiting rails to be used for adjusting the clamping and releasing states of the crocodile mouth clamps. Therefore, through automatic control of the crocodile mouth clamp and the limiting track, the loading and unloading process of the gravity block does not need manual intervention, the reliability and safety of the system are improved, in addition, the device is compact in structure, simple in assembly design, convenient and fast to maintain, suitable for the long-time and unattended energy storage requirement, and high in practicability and economic benefits.

Description

Technical Field

[0001] The invention relates to the technical field of cyclic energy storage, and in particular to a method and a device for automatic cyclic energy storage of a gravity block. Background Art

[0002] There are many existing power storage technologies. Among them, pumped storage and gravity storage are common large-scale physical energy storage methods. They have typical advantages such as peak regulation, valley filling, frequency regulation, emergency standby and black start. They can be used as an important support for the construction of a modern smart grid new power system. It is an important part of building a clean, low-carbon, safe, reliable, smart, flexible, economical and efficient new power system. Although pumped storage power stations are a key way to meet the regulation needs of the power system in the current and future periods, they are difficult to site for the upper and lower reservoirs, have high construction costs, and are limited by water sources, environment, land, and anti-seepage technology. They are far from meeting the current energy storage needs. Gravity energy storage, as a new energy storage method, has the advantages of high energy density, low environmental impact, and low site selection requirements, and has become a beneficial supplement to large-scale physical energy storage. Gravity energy storage belongs to mechanical energy storage, and its energy storage medium is mainly solid matter and water. The basic principle of gravity energy storage is to raise and lower the energy storage medium based on the height difference, thereby completing the charging and discharging process of the energy storage system. The essence of the gravity energy storage system is to use the gravity of the earth to store and release kinetic energy. The use of solid media for energy storage has more obvious advantages than liquid media, and it does not rely on terrain, climate and water sources. However, when solid media are used as energy storage media, issues such as floor space, stacking effect and safety of use need to be considered. At present, most of the concrete is used as the gravity block medium, but it has certain defects: 1. When concrete moves up and down for stacking, it will collide with each other and cause damage, and the structural strength is not high and it is easy to break; 2. The metal shell on the outside is prone to corrosion after long-term use, and the concrete inside the shell is easy to separate from the shell, causing shaking and moving inertia during movement, affecting safety of use; 3. It is not conducive to automatic loading and unloading of gravity blocks. When loading and unloading gravity blocks in conjunction with the entire gravity energy storage system, the system has a great impact on the gravity blocks, and the concrete gravity blocks are very easy to be damaged. In the prior art, there is a post-mining abandoned shaft gangue gradient gravity energy storage system (application number: 202010199858.0). This scheme only uses the abandoned mine shaft as an energy storage channel, establishes underground parking lots of different elevations between the main and auxiliary shafts, and then uses mine cars filled with gangue for energy storage; a gravity energy storage system based on the mine shaft, hoisting, and transportation system (application number 201910074856.6). This scheme uses the mine's original derrick, wire rope, mine car and wellhead operating equipment, transformers and electric lifting and power generation equipment to achieve gravity energy storage. After analysis, it is not difficult to find that the above-mentioned schemes have the following obvious defects or shortcomings: (1) Such schemes only use underground space in the shaft or a very small area near it for energy storage, resulting in small energy storage capacity, insufficient installed power generation capacity, and unreasonable input-output efficiency, which leads to the lack of relevant industrialization prospects for such schemes; (2) Such schemes all use mine cars filled with gangue for energy storage, which generally have operational safety risks such as poor stability of the mine cars, easy rolling of gangue, and outdated existing transportation systems.In the prior art, there is an efficient and environmentally friendly gravity energy storage method and device (application number: 201110141522.X). This patent utilizes the basic principle of energy conversion and is characterized in that the device consists of three parts: an energy input end gear, an output end gear and an energy storage weight. The connection and energy transmission of the three parts are realized by using a closed chain and a gear structure. The energy at the input end is used to rotate the gear unidirectionally to drive the gear on the weight and the output end gear to rotate in the form of torque, so as to achieve the purpose of lifting the weight and storing and releasing potential energy. After analysis, it is not difficult to find that the above scheme has the following obvious defects or shortcomings: (1) The gear structure used in this scheme has limited bearing capacity due to material and structural limitations, and there is a small energy storage capacity of a single group mechanism, the power generation installed capacity is not large-scale, and the input-output efficiency is unreasonable, resulting in this type of scheme having no relevant industrialization prospects; (2) This type of shaft energy storage scheme does not consider the problem of how to automatically load and unload the gravity block. Loading and unloading the gravity block requires kinetic energy, which is an important part of the entire energy conversion system. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To achieve the above object, the present invention proposes a method for automatic circulation energy storage of a gravity block, comprising the following steps: S1. The gravity block is transported from the lower warehouse to the loading and unloading belt through the transfer belt. The linear speed of the loading and unloading belt is greater than the linear speed of the chain group. S2, after the weight block is transported to the predetermined loading position, under the action of the limit track, the upper jaw of the crocodile clamp rotates clockwise to an open state, so that the weight block contacts the link shaft of the chain group; S3. When the limit track is disconnected, the upper jaw of the crocodile clamp rotates counterclockwise to a clamping state, fixes the gravity block to the chain group, and moves to a higher position with the chain group; S4, at the warehouse at a high place, the limit track acts again to open the crocodile jaws, and the gravity block is separated from the chain group and enters the warehouse at a high place through the transfer belt to complete energy storage; S5. The gravity block repeats the reverse process of the above steps from the warehouse at the higher position, moves to the warehouse at the lower position to complete energy release, and achieves the purpose of power generation.

[0005] The method and device for automatic circulation energy storage of gravity blocks of the present invention, the automatic circulation energy storage system of gravity blocks realizes efficient and automatic gravity energy storage and energy release through the precise cooperation of structural modules, and its design has the following beneficial effects: first, the gravity block completes the up and down circulation with the cooperation of the chain group and the belt system, and can continuously and stably store and release energy, and effectively utilize the gravitational potential energy; secondly, through the automatic control of the crocodile clamp and the limit track, the loading and unloading process of the gravity block does not require human intervention, thereby improving the reliability and safety of the system; in addition, the device has a compact structure, simple component design, and convenient maintenance, which is suitable for long-term, unattended energy storage needs, and has high practicality and economic benefits.

[0006] In addition, the method for automatic cyclic energy storage of gravity blocks proposed in the present invention may also have the following additional technical features: Specifically, the gravity block automatic circulation energy storage device includes a gravity block, a chain group, a driving wheel group, a guide wheel group, a tensioning wheel group, a loading and unloading belt, a transfer belt, a warehouse, a driving unit, and a limiting track, wherein: the gravity block is connected to the link shaft of the chain group through an alligator clamp, and the alligator clamp cooperates with the limiting track through the connecting shaft to control its opening and closing state, the chain group is connected to the driving wheel group and the guide wheel group through a chain transmission to realize the lifting and lowering of the gravity block, and the tensioning wheel group is arranged at the other end of the chain group and together with the driving wheel group constitutes A closed transmission structure, wherein the chain group is fixedly connected to the driving group through the tensioning wheel group, the loading and unloading belt is arranged beside the chain group, and is driven by a motor to cooperate with the connecting shaft of the chain group to realize the position adjustment of the gravity block, the transfer belt is connected to the loading and unloading belt, and the loading and unloading belt is used to transport the gravity block from the warehouse to the connection point of the chain group, the warehouse is contained in the storage module of the gravity block, and cooperates with the crocodile clamp on the upper part of the gravity block through the limiting track to adjust the clamping and release state of the crocodile clamp.

[0007] Specifically, the upper jaw plate and the lower jaw plate of the crocodile clamp of the gravity block are hinged by a connecting shaft, and a torsion spring is provided on the connecting shaft to ensure that it automatically returns to a clamping state when the limiting track is disconnected.

[0008] Specifically, the driving unit drives the chain connected to the chain group and the guide wheel group to move cyclically through the driving wheel group.

[0009] Specifically, the gravity block cooperates with the crocodile clamp through a trapezoidal groove at the bottom thereof, and saw-shaped teeth are arranged in the upper jaw plate of the crocodile clamp to enhance the connection strength.

[0010] Specifically, the outer shell of the gravity block is filled with iron ore, iron blocks or high-density concrete, and a plurality of connecting ribs are arranged inside the shell. The connecting ribs are directly welded to the shell to ensure that the filling material is stably fixed in the shell.

[0011] Specifically, the loading and unloading belt is fixedly connected to the transfer belt, and the linear speed difference between the loading and unloading belt and the chain group is maintained through the motor control of the driving unit, thereby forming a transmission process of the gravity block.

[0012] Specifically, a height sensor is installed on the side wall of the gravity block, a controller and a battery are built into the interior of the gravity block, the height sensor is electrically connected to the controller, and the controller is electrically connected to the battery.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the gravity block of the present invention; Figure 3 It is a schematic diagram of the structure of the alligator clip of the present invention; Figure 4 It is a structural schematic diagram of the present invention in a loading and unloading state; Figure 5 It is a structural schematic diagram of the gravity block loading of the present invention; Figure 6 It is a structural schematic diagram of the gravity block detachment of the present invention; Figure 7 It is a schematic structural diagram of the height sensor of the present invention.

[0015] As shown in the figure: 1. Gravity block; 12. Height sensor; 2. Chain set; 3. Driving wheel set; 4. Guide wheel set; 5. Tensioning wheel set; 6. Loading and unloading belt; 7. Transfer belt; 8. Warehouse; 9. Driving unit; 10. Limiting track; 1.1. Alligator clamp; 1.2. Gravity body. DETAILED DESCRIPTION

[0016] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limitations of the present invention. On the contrary, embodiments of the present invention include all changes, modifications and equivalents that fall within the spirit and connotation of the appended claims.

[0017] The following describes the method and device for automatic cyclic energy storage of gravity blocks according to an embodiment of the present invention in conjunction with the accompanying drawings.

[0018] like Figure 1-Figure 7 As shown, the gravity block automatic cycle energy storage method of the embodiment of the present invention may include the following steps: S1, the gravity block 1 is transported from the lower warehouse 8 to the loading and unloading belt 6 through the transfer belt 7, and the linear speed of the loading and unloading belt 6 is greater than the linear speed of the chain group 2, S2. After the weight block 1 is transported to the predetermined loading position, under the action of the limit track 10, the upper jaw of the crocodile clamp 1.1 rotates clockwise to an open state, so that the weight block 1 contacts the link shaft of the chain set 2. S3. When the limit track 10 is disconnected, the upper jaw of the crocodile clamp 1.1 rotates counterclockwise to a clamping state, fixes the gravity block 1 to the chain group 2, and moves to a higher position with the chain group 2. S4. At the high warehouse 8, the limit track 10 acts again to open the crocodile clamp 1.1, and the gravity block 1 is separated from the chain group 2 and enters the high warehouse 8 through the transfer belt 7 to complete the energy storage. S5, the gravity block 1 repeats the reverse process of the above steps from the high warehouse 8, moves to the low warehouse 8 to complete energy release, and achieves the purpose of power generation.

[0019] Furthermore, the upper jaw plate and the lower jaw plate of the crocodile clamp 1.1 of the gravity block 1 are hinged by a connecting shaft, and a torsion spring is provided on the connecting shaft to ensure that it automatically returns to the clamping state when the limit track 10 is disconnected. The driving unit 9 drives the chain connected to the chain group 2 and the guide wheel group 4 to move cyclically through the driving wheel group 3. The gravity block 1 cooperates with the crocodile clamp 1.1 through the trapezoidal groove at the bottom thereof. The upper jaw plate of the crocodile clamp 1.1 is provided with sawtooth to enhance the connection strength. The outer shell of the gravity block 1 is filled with iron ore, iron block or high-density mixed Concrete is provided, and a plurality of connecting ribs are arranged inside the shell, and the connecting ribs are directly welded to the shell to ensure that the filling material is stably fixed inside the shell, and the loading and unloading belt 6 is fixedly connected to the transfer belt 7, and the linear speed difference between the loading and unloading belt 6 and the chain group 2 is maintained through the motor control of the driving unit 9 to form a transmission process of the gravity block 1, and a height sensor 12 is installed on the side wall of the gravity block 1, and a controller and a battery are built in the gravity block 1, and the height sensor 12 is electrically connected to the controller, and the controller is electrically connected to the battery.

[0020] Specifically, the gravity block 1 in the lower warehouse 8 is transferred to the loading and unloading belt 6 via the transfer belt 7. The linear speed v2 of the loading and unloading belt 6 is controlled by the motor to be greater than the linear speed v1 of the chain group 2. The gravity block 1 is transported to the predetermined loading position. Under the action of the crocodile clamp 1.1 and the limiting track 10, the upper jaw plate of the crocodile clamp 1.1 rotates clockwise, and the crocodile clamp 1.1 is in an open state. The gravity block 1 moves with the loading and unloading belt 6, and the opened crocodile clamp 1.1 contacts the link shaft of the chain group 2. At this time, the limiting track 10 is disconnected, the upper jaw plate rotates counterclockwise, and the crocodile clamp 1.1 is in a clamped state on the link shaft. The gravity block 1 is successfully loaded onto the gravity block lifting and lowering module, and is transported to a higher place as the sprocket rotates. Then, through the action of the limiting track 10 on the crocodile clamp 1.1, the crocodile clamp 1.1 is opened, and the gravity block 1 is separated from the gravity block lifting and lowering module and enters the higher warehouse 8 via the transfer belt 7 to realize energy storage. 2. Power generation: The gravity block 1 in the high warehouse 8 is transferred to the loading and unloading belt 6 via the transfer belt 7. The linear speed v2 of the loading and unloading belt 6 is controlled by the motor to be greater than the linear speed v1 of the chain group 2. The gravity block 1 is transported to the predetermined loading position. Under the action of the crocodile clamp 1.1 and the limiting track 10, the upper jaw plate of the crocodile clamp 1.1 rotates clockwise, and the crocodile clamp 1.1 is in an open state. The gravity block 1 moves with the loading and unloading belt 6. The opened crocodile clamp 1.1 contacts the link shaft of the chain group 2. At this time, the limiting track 10 is disconnected, the upper jaw plate rotates counterclockwise, and the crocodile clamp 1.1 is in a clamping state on the link shaft. The gravity block 1 is successfully loaded onto the gravity block lifting and lowering module, and is transported to a lower place as the sprocket rotates. Then, through the action of the limiting track 10 on the crocodile clamp 1.1, the crocodile clamp 1.1 is opened, and the gravity block 1 is separated from the gravity block lifting and lowering module and enters the lower warehouse 8 via the transfer belt 7 to achieve power generation.

[0021] In one embodiment of the present invention, Figure 1-Figure 7As shown, it includes a gravity block 1, a chain group 2, a driving wheel group 3, a guide wheel group 4, a tensioning wheel group 5, a loading and unloading belt 6, a transfer belt 7, a warehouse 8, a driving unit 9, and a limiting track 10, wherein: the gravity block 1 is connected to the link shaft of the chain group 2 through an alligator clamp 1.1, and the alligator clamp 1.1 cooperates with the limiting track 10 through the connecting shaft to control its opening and closing state. The chain group 2 is connected to the driving wheel group 3 and the guide wheel group 4 through a chain transmission to realize the lifting and lowering of the gravity block 1. The tensioning wheel group 5 is arranged at the other end of the chain group 2 and is connected to the driving wheel group 3. Together they constitute a closed transmission structure, the chain group 2 is fixedly connected to the driving unit 9 via the tensioning wheel group 5, the loading and unloading belt 6 is arranged beside the chain group 2, and is driven by a motor to cooperate with the connecting shaft of the chain group 2 to realize the position adjustment of the gravity block 1, the transfer belt 7 is connected to the loading and unloading belt 6, and the loading and unloading belt 6 is used to transport the gravity block 1 from the warehouse 8 to the connection point of the chain group 2. The warehouse 8 is contained in the storage module of the gravity block 1, and is cooperated with the crocodile clamp 1.1 on the upper part of the gravity block 1 through the limiting track 10 to adjust the clamping and release state of the crocodile clamp.

[0022] It should be noted that the gravity block automatic circulation energy storage device described in this embodiment realizes automatic storage and release of energy by moving the gravity block between high and low warehouses 8 through the coordination of the gravity block, chain group 2, drive wheel group 3 and belt system. The gravity block is connected to the chain group 2 by an alligator clamp and is lifted or lowered by the drive wheel group 3. When the gravity block reaches the warehouse 8 position, the limit track 10 controls the opening and closing of the alligator clamp, thereby realizing automatic loading and unloading of the gravity block. The entire device is compact in design and easy to operate. It realizes efficient circulation through automated control and is suitable for energy storage needs for long-term operation.

[0023] It should be understood that the crocodile jaw clamp 1.1 includes an upper jaw plate, a lower jaw plate and a connecting shaft. The upper jaw plate is L-shaped, and the inner edge of the long side of the L-shape is provided with serrated teeth, and the corner of the L-shape is provided with a guide wheel. The short side of the L-shape is provided with an axial hole, which is hinged to the lower jaw plate through the connecting shaft, and the upper jaw plate rotates with the connecting shaft. The lower jaw plate is L-shaped, and the inner edge of the long side of the L-shape is provided with an inclined surface, and the short side of the L-shape is provided with an axial hole, which is hinged to the upper jaw plate through the connecting shaft, and a torsion spring is provided between the connecting shaft and the lower jaw plate. The gravity body 1.2 of the gravity block 1 has an outer shell composed of a metal plate, and the shell is filled with iron ore, iron blocks or high-density concrete. A number of connecting ribs are provided in the shell, and a trapezoidal groove is provided at the lower end of the gravity body to facilitate the insertion of the crocodile jaw clamp 1.1. The top of the gravity body 1.2 is fixedly connected to the lower jaw plate of the crocodile jaw clamp 1.1.

[0024] Specifically, the reciprocating motion of the gravity block between the high and low warehouses 8 is used to convert mechanical energy into potential energy for storage, and when released, it is reversely converted into mechanical energy to achieve power generation. The system delivers the gravity block to the position of the chain group 2 through the transfer belt 7, and the chain group 2 is driven by the driving unit 9 to lift the gravity block to the high warehouse 8. After reaching the specified position, the limit track 10 controls the opening and closing of the crocodile clamp, so that the gravity block can smoothly detach from the chain group 2 and enter the warehouse 8 to complete energy storage. The reverse process releases the gravity block from the high warehouse 8 to the low warehouse 8, and uses its downward process to achieve energy release and power generation.

[0025] In summary, the method of automatic cyclic energy storage of the gravity block of the embodiment of the present invention, the automatic cyclic energy storage system of the gravity block realizes efficient and automatic gravity energy storage and energy release through the precise cooperation of the structural modules. Its design has the following beneficial effects: First, the gravity block completes the up and down circulation with the cooperation of the chain group 2 and the belt system, and can continuously and stably store and release energy, and effectively utilize the gravitational potential energy. Secondly, through the automatic control of the crocodile clamp and the limit track 10, the loading and unloading process of the gravity block does not require human intervention, which improves the reliability and safety of the system. In addition, the device has a compact structure, simple component design, and convenient maintenance. It is suitable for long-term, unattended energy storage needs and has high practicality and economic benefits.

[0026] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and deform the above embodiments within the scope of the present invention.

Claims

1. A gravity block automatic cycle energy storage method, characterized in that: The following steps are involved: S1, transporting the gravity block (1) from the lower warehouse (8) to the loading and unloading belt (6) via the transfer belt (7), wherein the linear speed of the loading and unloading belt (6) is greater than the linear speed of the chain group (2); S2, after the weight block (1) is transported to the predetermined loading position, under the action of the limiting track (10), the upper jaw of the crocodile clamp (1.1) rotates clockwise to an open state, so that the weight block (1) contacts the link shaft of the chain assembly (2); S3, when the limit track (10) is disconnected, the upper jaw of the crocodile clamp (1.1) rotates counterclockwise to a clamping state, fixes the gravity block (1) to the chain group (2), and moves to a higher position along with the chain group (2); S4, at the warehouse (8) at a high place, the limit track (10) acts again to open the crocodile clamp (1.1), and the gravity block (1) is separated from the chain group (2) and enters the warehouse (8) at a high place through the transfer belt (7), completing energy storage; S5, the gravity block (1) repeats the reverse process of the above steps from the warehouse (8) at the higher position, and moves to the warehouse (8) at the lower position to complete energy release and achieve the purpose of power generation.

2. A gravity block automatic cycle energy storage device, applied to the gravity block automatic cycle energy storage method of claim 1, characterized in that: It comprises a gravity block (1), a chain assembly (2), a driving wheel assembly (3), a guide wheel assembly (4), a tensioning wheel assembly (5), a loading and unloading belt (6), a transfer belt (7), a warehouse (8), a driving unit (9), and a limiting rail (10), wherein: The gravity block (1) is connected to the link shaft of the chain group (2) via an alligator clamp (1.1), and the alligator clamp (1.1) cooperates with the limit track (10) via the connecting shaft to control the opening and closing state thereof; The chain group (2) is connected to the driving wheel group (3) and the guide wheel group (4) via a chain transmission, so as to achieve the lifting and lowering of the gravity block (1); The tensioning wheel assembly (5) is arranged at the other end of the chain assembly (2), and together with the driving wheel assembly (3) forms a closed transmission structure, and the chain assembly (2) is fixedly connected to the driving machine assembly (9) via the tensioning wheel assembly (5); The loading and unloading belt (6) is arranged beside the chain group (2) and is driven by a motor to cooperate with the link shaft of the chain group (2) to achieve position adjustment of the gravity block (1); The transfer belt (7) is connected to the loading and unloading belt (6), and the loading and unloading belt (6) is used to transport the gravity block (1) from the warehouse (8) to the connection point of the chain group (2); The warehouse (8) is contained in the storage module of the gravity block (1), and cooperates with the crocodile clamp (1.1) on the upper part of the gravity block (1) through the limiting track (10) to adjust the clamping and releasing states of the crocodile clamp.

3. The gravity block automatic circulation energy storage device according to claim 2 is characterized in that: The upper jaw plate and the lower jaw plate of the crocodile clamp (1.1) of the gravity block (1) are hinged via a connecting shaft, and a torsion spring is provided on the connecting shaft to ensure that the connecting shaft automatically returns to a clamped state when the limiting track (10) is disconnected.

4. The gravity block automatic circulation energy storage device according to claim 2 is characterized in that: The driving unit (9) drives the chain connected to the chain set (2) and the guide wheel set (4) to move cyclically via the driving wheel set (3).

5. The gravity block automatic circulation energy storage device according to claim 2 is characterized in that: The gravity block (1) cooperates with the crocodile clamp (1.1) via a trapezoidal groove at the bottom thereof, and saw-shaped teeth are provided in the upper jaw plate of the crocodile clamp (1.1) to enhance the connection strength.

6. The gravity block automatic circulation energy storage device according to claim 2 is characterized in that: The outer shell of the gravity block (1) is filled with iron ore, iron blocks or high-density concrete, and a plurality of connecting ribs are arranged inside the shell. The connecting ribs are directly welded to the shell to ensure that the filling material is stably fixed inside the shell.

7. The gravity block automatic circulation energy storage device according to claim 2 is characterized in that: The loading and unloading belt (6) is fixedly connected to the transfer belt (7), and the linear speed difference between the loading and unloading belt (6) and the chain group (2) is maintained through the motor control of the driving unit (9), thereby forming a transmission process of the gravity block (1).

8. The gravity block automatic circulation energy storage device according to claim 2 is characterized in that: A height sensor (12) is installed on the side wall of the gravity block (1); a controller and a storage battery are built into the interior of the gravity block (1); the height sensor (12) is electrically connected to the controller, and the controller is electrically connected to the storage battery.

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