Slope gravity energy storage system capable of adjusting balance of heavy object

Abstract

The utility model discloses a slope gravity energy storage system capable of adjusting weight balance, two tracks are arranged on a slope side by side, and a weight conveying and transferring platform is arranged on each track; bottom loading and unloading stations and bottom storage bins are arranged at the bottom of the slope; a top loading and unloading station, a top storage bin and a motor generator are arranged at the top of the slope; the output end of the motor generator is connected with a friction driving wheel which is in transmission connection with a steel wire rope; the two bend wheels are in one-to-one correspondence with the two tracks, and the two ends of the steel wire rope pass through the corresponding bend wheels and then are connected with the corresponding heavy object conveying and transferring platforms; the heavy object conveying and transferring platform comprises a main body frame, a top frame is arranged above the main body frame, one end of the top frame is rotationally connected with the main body frame, and the other end of the top frame is connected with the main body frame through an angle adjusting device. According to the scheme, the condition that the heavy object slides downwards in the running process can be prevented, and the stability and efficiency of the system are improved.

Description

Technical Field

[0001] This utility model belongs to the field of gravity energy storage and power generation technology, specifically relating to a slope gravity energy storage system with adjustable weight balance. Background Technology

[0002] Slope gravity energy storage systems utilize the elevation difference of a slope as a transport channel for heavy energy storage blocks. Slopes typically utilize natural mountains, open-pit mine slopes, or underground inclined mine shafts to fully utilize natural resources and reduce construction costs. Currently, there is no dedicated transport platform developed for slope gravity energy storage. Ordinary transport vehicles are mostly flatbed or box-type, used for transporting goods on horizontal or gently sloping surfaces at relatively low speeds, and are unsuitable for the operating conditions and technical requirements of slope gravity energy storage. In particular, gravity energy storage systems require slopes with significant gradients and variations in gradient. Therefore, the heavy loads carried on the transport vehicles will be tilted as they travel on the slope, with the tilt angle changing with the gradient, posing a risk of displacement or tipping over. Furthermore, the speed and efficiency of the heavy load transport are crucial factors for the success of gravity energy storage projects and the provision of a continuous and stable current. Traditional slope gravity energy storage systems suffer from low operating efficiency. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an adjustable gravity energy storage system for inclined heavy objects, which solves the problems of instability risk and low conveying efficiency in existing solutions. It realizes the adjustment of the balance of heavy objects through the heavy object conveying and transfer platform, improves the stability of the heavy object conveying process, and improves the work efficiency by adopting a friction-type heavy object lifting method.

[0004] According to the technical solution of this utility model, this utility model provides an adjustable gravity energy storage system for slopes with adjustable load balance. Two tracks are arranged side-by-side on the slope, each track having a load conveying and transfer platform. A bottom loading / unloading station and a bottom storage bin are located at the bottom of the slope. A top loading / unloading station, a top storage bin, and an electric generator are located at the top of the slope. The output end of the electric generator is connected to a friction drive wheel, and a steel wire rope is driven through the friction drive wheel. It also includes two redirecting wheels corresponding to the two tracks, with both ends of the steel wire rope connected to the corresponding load conveying and transfer platform after passing through the respective redirecting wheels. The load conveying and transfer platform includes a main frame, with wheels matching the tracks at the bottom of the main frame, and the main frame connected to the steel wire rope. A top frame is located above the main frame, with one end of the top frame rotatably connected to the main frame along the slope length, and the other end connected to the main frame via an angle adjustment device. A lifting and transfer device is located above the top frame, with its upper surface serving as a load-bearing surface capable of vertical lifting, horizontal extension, or horizontal transport.

[0005] In some implementations, the horizontal extension or horizontal transport direction of the load-bearing surface of each load-bearing and transfer platform is opposite to that of another load-bearing and transfer platform.

[0006] In some embodiments, the bottom loading and unloading station is provided with two bottom loading and unloading transfer devices, which are horizontally arranged and located on both sides of the slope; the bottom of the slope has a sunken section lower than the bottom loading and unloading transfer devices; the top loading and unloading station is provided with two top loading and unloading transfer devices, which are horizontally arranged and located on both sides of the slope.

[0007] In some embodiments, the lifting and transferring device includes a vertical lifting assembly and a horizontal telescopic assembly connected together, one of which is connected to the top frame, and the upper surface of the other of the vertical lifting assembly and the horizontal telescopic assembly is the load-bearing surface.

[0008] Alternatively, the lifting and transfer device includes a vertical lifting assembly disposed above the top frame, and a conveying mechanism disposed above the vertical lifting assembly.

[0009] In some embodiments, the heavy object conveying and transfer platform also includes a heavy object stabilizing device, which includes two or more stabilizing blocks located above the load-bearing surface of the heavy object and distributed around the periphery of the heavy object; the stabilizing blocks are connected to a movable mechanism to enable the clamping and release of the heavy object.

[0010] In some embodiments, when the weight is held, the weight is in the weight holding position; the side above the weight bearing surface where the weight moves in and out of the weight holding position as the lifting and transporting device extends or is transported horizontally is the weight entry / exit side; the movable mechanism connected to the stabilizing block located on the weight entry / exit side is the entry / exit clearance mechanism, which enables the stabilizing block to be raised, lowered, moved, or flipped to clear the space required for the weight to move in and out on the weight entry / exit side; the movable mechanism connected to the stabilizing blocks on the other sides above the weight bearing surface is the stabilizing block telescopic mechanism, which enables the stabilizing block to extend inward toward the weight holding position and retract outward toward the weight holding position.

[0011] In some embodiments, there are at least four stabilizing blocks evenly distributed around the periphery of the weight clamping position, with at least one stabilizing block located on the weight entry / exit side.

[0012] In some embodiments, the angle adjustment device is a telescopic rod mechanism, with one end of the telescopic rod mechanism rotatably connected to the top frame and the other end of the telescopic rod mechanism rotatably connected to the main frame.

[0013] In some implementations, the heavy load conveying and transfer platform also includes a slope detection device and a control system, wherein the slope detection device is connected to the control system and the control system is connected to the angle adjustment device.

[0014] In some embodiments, the heavy-duty conveying and transfer platform also includes a power connection disconnection device for connecting to or disconnecting from an external power source.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0016] This utility model's adjustable load-balance slope gravity energy storage system considers power engineering applications and fully leverages external factors such as the varying angles of slopes in abandoned mines and natural mountains. The load-bearing surface (top surface) on the load conveying and transfer platform is angled to the bottom surface of the main frame (i.e., the slope surface), and this angle can be adjusted for balance to ensure the load-bearing surface remains horizontal or at least without significant tilt. Furthermore, in sections where the actual slope angle changes, angle adjustment can be automatically controlled based on pre-programming or real-time detection. Therefore, this solution ensures that the load does not tilt significantly during slope conveying or transfer, effectively preventing downward slippage and avoiding safety accidents, thus enhancing the load-bearing capacity. The solution ensures the stability of the gravity energy storage system. Furthermore, it includes a lifting and transfer device responsible for loading, unloading, and transferring heavy objects. Lifting effectively compensates for height discrepancies between the platform and external platforms after the platform has come to a stop. Extension or conveying allows for automatic loading and unloading of heavy objects from the platform, reducing the time required for other heavy object transfer methods (such as crane grabbing) and improving the efficiency of the gravity energy storage system. This solution is well-suited to the actual environmental conditions of slope gravity energy storage construction and adapts to broader development trends. In addition, the solution employs a friction-type lifting drive, which, compared to a winding lifting method, significantly improves the operating speed and efficiency of the slope gravity turbine, increases the system's installed capacity, and avoids the impact of multiple layers of wire rope winding on the drum, thus preventing compression of the wire rope and affecting its performance and lifespan. Attached Figure Description

[0017] Figure 1 This is a cross-sectional structural diagram of the overall system structure provided by this utility model.

[0018] Figure 2 This is a top view of the overall system structure provided by this utility model.

[0019] Figure 3 This is a side view of the heavy object conveying and transfer platform provided by this utility model during the heavy object conveying process on a slope.

[0020] Figure 4 yes Figure 3 A schematic diagram of the structure of the heavy object conveying and transfer platform after the slope changes.

[0021] Figure 5 This is a rear view structural diagram of the heavy object conveying and transfer platform provided by this utility model in the state of holding the heavy object.

[0022] Figure 6 yes Figure 5 A schematic diagram of the structure of the heavy object conveying and transfer platform in the loading and unloading state.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Heavy object conveying and transfer platform; 11. Main frame; 12. Wheels; 13. Top frame; 14. Angle adjustment device; 15. Lifting and transfer device; 16. Stabilizing block; 2. Track; 31. Bottom loading and unloading station; 32. Bottom storage bin; 33. Bottom loading and unloading transfer equipment; 41. Top loading and unloading station; 42. Top storage bin; 43. Top loading and unloading transfer equipment; 51. Electric generator; 52. Friction drive wheel; 53. Idler wheel; 6. Wire rope; 7. Heavy object. Detailed Implementation

[0025] This invention provides an adjustable gravity energy storage system for inclined slopes, which solves the problems of instability risks and low conveying efficiency in existing solutions. It achieves the adjustment of the balance of heavy objects through the heavy object conveying and transfer platform, thereby improving the stability of the heavy object conveying process. Furthermore, it adopts a friction-type lifting method for heavy objects, thereby improving work efficiency.

[0026] Please see Figures 1 to 6 This utility model discloses an adjustable gravity energy storage system for inclined slopes, comprising two parallel tracks 2 on an inclined slope, each track equipped with a heavy object conveying and transfer platform 1, thus forming two heavy object conveying channels within the system. At the bottom of the inclined slope are a bottom loading / unloading station 31 and a bottom storage bin 32. The bottom storage bin 32 stores heavy objects 7 in the bottom area of ​​the inclined slope, while the bottom loading / unloading station 31 transfers heavy objects 7 between the bottom storage bin 32 and the heavy object conveying and transfer platform 1, i.e., loading and unloading heavy objects 7. At the top of the inclined slope are a top loading / unloading station 41, a top storage bin 42, and an electric generator 51. The top storage bin 42 stores heavy objects 7 in the top area of ​​the inclined slope, while the top loading / unloading station 41 transfers heavy objects 7 between the top storage bin 42 and the heavy object conveying and transfer platform 1, i.e., loading and unloading heavy objects 7.

[0027] The output end of the electric generator 51 is connected to a friction drive wheel 52, and a steel wire rope 6 is driven onto the friction drive wheel 52. It also includes two redirecting wheels 53 that correspond one-to-one with the two tracks 2. The two ends of the steel wire rope 6 are connected to the corresponding heavy load conveying and transfer platform 1 after passing through the corresponding redirecting wheels 53, so that the steel wire rope 6 is close to the slope ground and basically parallel to the slope (i.e., the heavy load conveying path). Furthermore, the two heavy load conveying and transfer platforms 1 move synchronously in opposite directions. When one moves up the slope, the other moves down the slope. When one is at the top of the slope, the other is at the bottom of the slope.

[0028] The electric generator 51, also known as a generator-motor, has both power generation and electrical functions. During energy storage, it utilizes grid power, with the motor bearings rotating to perform work. During power generation, the generator bearings rotate, generating electrical energy through the rotor, stator, and other devices. The electric generator 51 is connected to the grid, more specifically, through a converter to achieve the required functions. The friction drive wheel 52, the idler wheel 53, the electric generator 51, the wire rope 6, and the heavy-duty conveying and transfer platform 1 together constitute the slope gravity turbine of the slope gravity energy storage system.

[0029] The heavy-duty conveying and transfer platform 1 includes a main frame 11. Rotatable wheels 12, for example, four wheels 12, are mounted at the bottom of the main frame 11 and matched with the track 2. The main frame 11 is connected to a steel wire rope 6, for example, by a steel wire rope connecting device at the front end of the main frame 11. A top frame 13 is mounted above the main frame 11. One end of the top frame 13 along the slope (the front end, i.e., the upper end in the illustrated embodiment) is rotatably connected (e.g., hinged) to the main frame 11, and the other end along the slope (the rear end, i.e., the lower end in the illustrated embodiment) is connected to the main frame 11 via an angle adjustment device 14. The main frame 11 moves along the slope and changes angle with the slope gradient. The angle adjustment device 14 can adjust the angle between the top frame 13 and the main frame 11 to keep the top frame 13 horizontal. A lifting and transferring device 15 is provided above the top frame 13. The upper surface of the lifting and transferring device 15 is a heavy load-bearing surface that can be vertically lifted, horizontally extended, or horizontally transported.

[0030] Existing technologies use conventional transport vehicles, transporting heavy objects at an incline. With changes in slope and vibrations during operation, the heavy objects may slip or tip over. This new solution, however, places the heavy objects on a level load-bearing surface during incline operation, significantly improving operational stability. Furthermore, the lifting and transfer device in this solution effectively compensates for any height discrepancies between the platform and the external platform after the platform has come to a complete stop. Extension or conveying mechanisms allow for the automatic loading and unloading of heavy objects from and from the platform.

[0031] Preferably, the horizontal extension or horizontal transport direction of the load-bearing surface of each heavy object conveying and transfer platform 1 is opposite to that of another heavy object conveying and transfer platform 1. For example... Figure 2 As shown, the ramp is located in the middle, and two heavy object conveying and transfer platforms 1 run side by side on two tracks 2 on both sides of the ramp. The horizontal extension or horizontal conveying direction is outward to both sides. This arrangement facilitates the loading, unloading and transfer of heavy objects and helps to make the layout compact and improve space utilization.

[0032] Furthermore, the bottom loading and unloading station 31 is equipped with two bottom loading and unloading transfer devices 33, which are horizontally positioned and located on opposite sides of the slope. The bottom of the slope has a sunken section lower than the bottom loading and unloading transfer devices 33, so that when the heavy object conveying and transfer platform 1 is located in the sunken section, the load-bearing surface of the heavy object can be flush with the bottom loading and unloading transfer devices 33. More specifically, the ground of the bottom loading and unloading station 31 is U-shaped, with the U-shaped gap corresponding to the slope (sunken section), and platforms higher than the slope (sunken section) are formed on both sides of the U-shaped gap.

[0033] Similarly, the top loading and unloading station 41 is equipped with two top loading and unloading transfer devices 43, which are horizontally arranged and located on both sides of the slope. The ground of the top loading and unloading station 41 is U-shaped, with the gap in the U-shape corresponding to the slope, and platforms higher than the slope are formed on both sides of the gap in the U-shape.

[0034] Bottom loading and unloading transfer equipment 33 and top loading and unloading transfer equipment 43 are used to transport heavy objects between the storage warehouse and the loading and unloading station, and can also assist in the loading and unloading process of heavy objects on the heavy object conveying and transfer platform 1. Bottom loading and unloading transfer equipment 33 and top loading and unloading transfer equipment 43 are, for example, AGV trolleys or RGV trolleys; or, for example, cranes, to move and stack heavy objects by hoisting.

[0035] More specifically, in some embodiments, in the heavy-duty conveying and transfer platform 1, the lifting and transfer device 15 includes a vertical lifting assembly and a horizontal telescopic assembly connected together. One of the vertical lifting assembly and the horizontal telescopic assembly is connected to the top frame 13, and the upper surface of the other vertical lifting assembly and the horizontal telescopic assembly serves as the load-bearing surface. The horizontal telescopic assembly is, for example, a telescopic fork, which, in conjunction with the vertical lifting assembly, enables an automatic loading process, such as extending the unloaded fork, lifting the heavy object, and moving it back to its original position, as well as an automatic unloading process, such as extending the fork and lowering the heavy object.

[0036] In other embodiments, the lifting and transferring device 15 includes a vertical lifting assembly disposed above the top frame 13, and a conveying mechanism disposed above the vertical lifting assembly. The conveying mechanism is, for example, a chain or roller conveyor, thereby enabling the automatic feeding and unloading of heavy objects from the platform via a conveying method.

[0037] Preferably, the heavy object conveying and transfer platform 1 further includes a heavy object stabilizing device, which comprises two or more stabilizing blocks 16. The stabilizing blocks 16 are located above the load-bearing surface and distributed around the periphery of the heavy object 7. The stabilizing blocks 16 are connected to a movable mechanism to enable the clamping and release of the heavy object 7. The stabilizing blocks 16 are, for example, wear-resistant blocks. After the heavy object is loaded, the multiple stabilizing blocks 16 clamp the heavy object 7, stabilize its position, and further prevent the heavy object 7 from sliding or tipping over.

[0038] Further, it can be defined that when the heavy object 7 is held, the heavy object 7 is in the holding position, which is, for example, the central position above the top frame 13. Above the load-bearing surface, the side where the heavy object 7 moves in and out of the holding position as the lifting and transferring device 15 horizontally extends or is horizontally transported is the load entry / exit side. The load entry / exit side corresponds to the direction of horizontal extension or horizontal transport of the load-bearing surface. For example, in the illustrated embodiment, the side of the load conveying and transferring platform 1 connected to the wire rope 6 is the front side. After the load conveying and transferring platform 1 on the left (or right) side runs to the top or bottom of the slope, the lifting and transferring device 15 moves to the left (or right) side to load or unload the heavy object 7. This left (or right) side is the load entry / exit side.

[0039] The movable mechanism connected to the stabilizing block 16 on the side where the heavy object enters or exits is an entry / exit clearance mechanism. This mechanism allows the stabilizing block 16 to rise, move, or flip to create the necessary space on the side where the heavy object 7 can move in and out. For example... Figure 6 In the illustrated embodiment, the entry / exit avoidance mechanism is a lifting mechanism, which lowers the stabilizing block 16 on this side without obstructing the extension and retraction of the lifting and transferring device. It is conceivable that the stabilizing block 16 on this side can also achieve the required avoidance function by moving forward or backward a sufficiently long distance, or by flipping downwards, etc. The specific mechanical structure is easily implemented based on existing technical knowledge and will not be elaborated here. Further preferably, the entry / exit avoidance mechanism also has a stabilizing block telescopic mechanism, enabling the stabilizing block 16 to extend towards the inside of the load-holding position and retract towards the outside of the load-holding position.

[0040] The movable mechanism connected to the stabilizing blocks 16 located on the remaining sides above the load-bearing surface is a stabilizing block telescopic mechanism. The stabilizing block telescopic mechanism can extend the stabilizing blocks 16 towards the inside of the load clamping position and retract them towards the outside of the load clamping position. Thus, when loading the load 7, after the load 7 is moved to the load clamping position in the middle, the stabilizing blocks 16 on the remaining sides (or all sides) other than the load entry / exit side extend inward, abut against the load 7, and achieve clamping.

[0041] As a supplementary explanation, the lifting and transferring device 15 does not need to be very high. Therefore, the stabilizing block 16 can be set on the top frame 13 at the highest position above the load-bearing surface, so as not to obstruct the lifting and transferring device 15 from lifting and transferring. Alternatively, the stabilizing block 16 can also be set on the lifting and transferring device 15 and move up and down with the lifting and transferring device 15.

[0042] Preferably, the stabilizing blocks 16 are arranged in pairs, and there are at least four stabilizing blocks 16 evenly distributed around the periphery of the weight clamping position, with at least one stabilizing block 16 located on the weight entry / exit side. In the illustrated embodiment, the weight 7 is a cuboid, and there are four stabilizing blocks 16 evenly distributed around the periphery of the weight clamping position, corresponding to the four sides of the weight 7, with one stabilizing block 16 located on the weight entry / exit side.

[0043] The angle adjustment device 14 is, for example, a telescopic rod mechanism, more specifically, an electric cylinder. One end of the telescopic rod mechanism is rotatably connected (e.g., hinged) to the top frame 13, and the other end is rotatably connected (e.g., hinged) to the main frame 11. During operation, the telescopic rod mechanism extends, increasing the angle between the top frame 13 and the main frame 11.

[0044] Furthermore, it also includes a slope detection device and a control system. The slope detection device is connected to the control system, and the control system is connected to the angle adjustment device 14. For example, the slope detection device is fixedly mounted on the main frame to detect its own tilt angle, i.e., the slope of the ramp, in real time. When the angle changes, the angle adjustment device 14 is adjusted accordingly through calculation. Alternatively, the slope detection device is fixedly mounted on the top frame 13 to detect the levelness of the top frame 13 in real time. In other embodiments, programming is performed in advance based on the slope of the ramp to automatically adjust the levelness of the top frame 13 when the heavy object conveying and transfer platform moves to a certain position (its position can be determined by the running time).

[0045] Preferably, it also includes a power connection disconnection device for connecting to or disconnecting from an external power source, thereby connecting to an external power source for power supply during loading and unloading of heavy objects at the top and bottom of the slope, and / or charging the built-in power supply of the heavy object conveying and transfer platform. The power connection disconnection device can be, for example, a wired connection, such as that used in existing trolleybuses, or a wireless charging method, etc. Preferably, the heavy object conveying and transfer platform of this invention has a built-in power supply, which can be used to power the angle adjustment device and the detection devices on the platform (such as angle detection, limit detection, etc.) during operation.

[0046] The working principle of a typical embodiment of this utility model is as follows.

[0047] The gravity energy storage system designed in this invention mainly relies on the friction drive of steel wire ropes to lift and lower heavy objects, thereby storing and releasing electrical energy. All components of the system, as well as the power conversion equipment, are interlocked and controlled by a control system.

[0048] During energy storage, the bottom loading and unloading transfer equipment at the bottom of the slope transports the heavy object to the bottom loading and unloading station. The heavy object is automatically loaded onto the heavy object conveying and transfer platform. Then, the electric generator is started, and the steel cable, under the action of friction drive wheel, drives the heavy object conveying and transfer platform to transport the heavy object to the loading and unloading station at the top of the slope. The electric generator stops, and the heavy object conveying and transfer platform automatically sends the heavy object out. The top loading and unloading transfer equipment then transfers the heavy object and stores it in an orderly manner. At the same time, the empty heavy object conveying and transfer platform at the other end of the steel cable runs along the slope track to the bottom of the slope and completes the automatic loading of the heavy object at the bottom loading and unloading station. The same process continues, with the two heavy object conveying and transfer platforms running up and down alternately until all the heavy object corresponding to the system capacity is transferred to the top of the slope, completing the entire energy storage process.

[0049] During energy release, the top loading and unloading transfer equipment at the top of the slope transports the heavy object to the top loading and unloading station. The heavy object is automatically loaded onto the heavy object conveying and transfer platform. Under the action of the heavy object and its own gravity, the heavy object conveying and transfer platform drives the wire rope along the track to the bottom of the slope. The wire rope drives the friction drive wheel to rotate through friction, which in turn drives the electric generator to generate electricity. With the action of the converter, the electrical energy is fed back to the grid. When the heavy object conveying and transfer platform reaches the bottom loading and unloading station, the generator motor stops rotating, and the heavy object conveying and transfer platform automatically delivers the heavy object. The bottom loading and unloading transfer equipment then transfers and stores the heavy object in an orderly manner. At the same time, the empty heavy object conveying and transfer platform at the other end of the wire rope runs up the slope track to the top of the slope and completes the automatic loading of the heavy object at the top loading and unloading station. Then, the same process continues. The two heavy object conveying and transfer platforms alternately run up and down until all the heavy objects corresponding to the system capacity are transferred to the bottom of the slope, completing the entire energy release process.

[0050] During the transport of heavy objects during energy storage and release, the angle adjustment device of the heavy object transport and transfer platform can adjust the angle between the top and bottom surfaces of the platform in real time according to the actual terrain of the slope, ensuring that the top surface of the platform, i.e., the load-bearing surface, is always horizontal. During the loading process, after the heavy object transport and transfer platform stops at the loading and unloading station at the top or bottom of the slope, the power connection disconnection device connects to the nearby power source. The vertical lifting component of the lifting and transfer device at the top of the platform automatically adjusts to a uniform horizontal plane according to the height difference of its external platform (such as the ground of the loading and unloading station or the surface of the loading and unloading transfer equipment, etc.). Then, the horizontal telescopic component extends to the external platform to wait for the heavy object to be lowered. Then, the horizontal telescopic component rises along with the vertical lifting component to lift the heavy object away from the external platform. The horizontal telescopic component retracts to the heavy object transport and transfer platform and automatically falls to place the heavy object in the heavy object clamping position. Then, the stabilizing block on the side where the heavy object enters or exits rises, while the stabilizing blocks on the other three sides move closer to the heavy object under the action of the stabilizing block telescopic mechanism until the heavy object is clamped from all sides. After that, the power connection disconnection device disconnects from the nearby power source, completing the loading of the heavy object. During the unloading process, after the heavy object conveying and transfer platform comes to a stop at the loading and unloading station at the top or bottom of the slope, the power connection disconnection device connects to the nearby power source. The stabilizing block on the side where the heavy object enters or exits descends and retracts, while the stabilizing blocks on the other three sides automatically move away from the heavy object. Then, the vertical lifting component of the lifting and transfer device lifts and raises the heavy object, and the horizontal telescopic component extends to send the heavy object to the external loading and unloading platform. The horizontal telescopic component lowers and retracts, and then the power connection disconnection device disconnects from the nearby power source, completing the unloading of the heavy object.

[0051] The typical slope gravity energy storage system of this utility model has the following beneficial technical effects.

[0052] 1. This utility model design takes into account the application of power engineering, and at the same time fully considers the external factors of the undulating slope angle of abandoned mines, natural mountains and other slopes, which are in line with the actual environmental conditions for slope gravity energy storage construction and adapt to the development trend of the general environment.

[0053] 2. This utility model adopts a friction-type heavy object lifting drive method, which can significantly increase the operating speed of the inclined gravity wheel machine and increase the system's installed capacity compared to the winding lifting method; at the same time, it can avoid the compression of the wire rope caused by multiple layers of wire rope wrapped on the drum, thus avoiding the impact on the performance and life of the wire rope.

[0054] 3. This utility model adopts a heavy object conveying and transfer platform that can realize automatic balance of heavy objects. The platform is wedge-shaped and is equipped with a heavy object balance adjustment device (angle adjustment device). It can automatically adjust the actual angle between its top surface and the ground according to the change of the slope angle, so that the top surface and the heavy object always remain in a horizontal state, preventing the heavy object from slipping and shaking during operation, and improving the safety of the system.

[0055] 4. This utility model can be modularized according to actual engineering needs, forming multiple gravity energy storage systems arranged side by side to achieve a larger installed capacity.

[0056] 5. The top of the heavy-duty conveying and transfer platform of this utility model is equipped with a liftable automatic telescopic mechanism, which is responsible for loading, unloading and transferring heavy objects. The lifting mechanism can effectively compensate for the height deviation between the heavy-duty conveying and transfer platform and the external platform after the heavy-duty conveying and transfer platform has come to a stop. The telescopic mechanism (such as telescopic forks) can realize the automatic feeding and feeding of heavy objects into and out of the platform, reducing the working time of other heavy-duty transfer methods (such as crane grabbing, etc.) and improving system efficiency.

[0057] 6. The top of the heavy object conveying and transfer platform of this utility model is equipped with a movable stabilizing block, forming an automatic stabilizing device for the heavy object block. The stabilizing block on the side where the heavy object enters or exits is liftable, while the other three sides are horizontally retractable. When the heavy object moves into position, the stabilizing block on the side where the heavy object enters or exits rises, while the stabilizing blocks on the other three sides move closer to the heavy object block until they hug the heavy object block from all sides.

[0058] 7. The bottom of the heavy object conveying and transfer platform of this utility model is equipped with an automatic power connection device. When the platform stops at the top or bottom of the slope, it can automatically connect to the power supply to power the telescopic devices and other electrical equipment installed on the platform. At the same time, it can charge the built-in power supply of the platform, avoiding the increase in cost caused by laying cables along the line.

Claims

1. A slope gravity energy storage system with adjustable load balance, characterized in that, Two tracks (2) are arranged side by side on the slope, and a heavy object conveying and transfer platform (1) is set on each track; a bottom loading and unloading station (31) and a bottom storage bin (32) are set at the bottom of the slope; a top loading and unloading station (41), a top storage bin (42) and an electric generator (51) are set at the top of the slope; the output end of the electric generator (51) is connected to a friction drive wheel (52), and a steel wire rope (6) is connected to the friction drive wheel (52); it also includes two redirecting wheels (53) that correspond one-to-one with the two tracks (2), and the two ends of the steel wire rope (6) are connected to the corresponding heavy object conveying and transfer platform (1) after passing through the corresponding redirecting wheels (53); The heavy object conveying and transfer platform (1) includes a main frame (11), with wheels (12) matching the track (2) at the bottom of the main frame (11), and the main frame (11) is connected to the wire rope (6); a top frame (13) is provided above the main frame (11), one end of the top frame (13) along the slope length direction is rotatably connected to the main frame (11), and the other end of the top frame (13) along the slope length direction is connected to the main frame (11) through an angle adjustment device (14); a lifting and transfer device (15) is provided above the top frame (13), and the upper surface of the lifting and transfer device (15) is a heavy object bearing surface that can be vertically lifted and horizontally extended or horizontally transported.

2. The adjustable weight balance slope gravity energy storage system according to claim 1, characterized in that, The horizontal extension or horizontal transport direction of the load-bearing surface of each load-bearing and transfer platform (1) is the opposite direction to the other load-bearing and transfer platform (1).

3. The adjustable weight balance slope gravity energy storage system according to claim 2, characterized in that, Two bottom loading and unloading transfer devices (33) are provided in the bottom loading and unloading station (31). The bottom loading and unloading transfer devices (33) are set horizontally, and the two bottom loading and unloading transfer devices (33) are located on both sides of the slope respectively; the bottom of the slope has a sunken section lower than the bottom loading and unloading transfer devices (33); The top loading and unloading station (41) is equipped with two top loading and unloading transfer devices (43). The top loading and unloading transfer devices (43) are set horizontally, and the two top loading and unloading transfer devices (43) are located on both sides of the slope respectively.

4. The adjustable weight balance slope gravity energy storage system according to any one of claims 1-3, characterized in that, The lifting and transfer device (15) includes a vertical lifting assembly and a horizontal telescopic assembly connected to each other. One of the vertical lifting assembly and the horizontal telescopic assembly is connected to the top frame (13), and the upper surface of the other vertical lifting assembly and the horizontal telescopic assembly is the load-bearing surface. Alternatively, the lifting and transfer device (15) includes a vertical lifting assembly disposed above the top frame (13) and a conveying mechanism disposed above the vertical lifting assembly.

5. The adjustable weight balance slope gravity energy storage system according to any one of claims 1-3, characterized in that, The heavy object conveying and transfer platform (1) also includes a heavy object stabilizing device, which includes two or more stabilizing blocks (16). The stabilizing blocks (16) are located above the load-bearing surface of the heavy object and distributed around the heavy object (7). The stabilizing blocks (16) are connected to a movable mechanism to enable the clamping and release of the heavy object (7).

6. The adjustable weight balance slope gravity energy storage system according to claim 5, characterized in that, When the heavy object (7) is held tightly, the heavy object (7) is in the holding position; above the bearing surface of the heavy object, the side of the heavy object (7) that moves in and out of the holding position as the lifting and conveying device (15) extends or is conveyed horizontally is the side of the heavy object entering and exiting. The movable mechanism connected to the stabilizing block (16) located on the side where the heavy object enters or exits is an entry and exit clearance mechanism. The entry and exit clearance mechanism can make the stabilizing block (16) rise, move, or flip to clear the space required for the heavy object (7) to move in and out on the side where the heavy object enters or exits. The movable mechanism connected to the stabilizing block (16) located on the other side above the load bearing surface is the stabilizing block telescopic mechanism. The stabilizing block telescopic mechanism can extend the stabilizing block (16) towards the inside of the load clamping position and retract it towards the outside of the load clamping position.

7. The adjustable weight balance slope gravity energy storage system according to claim 6, characterized in that, The stabilizing blocks (16) are at least four evenly distributed around the periphery of the weight clamping position, with at least one stabilizing block (16) located on the weight entry / exit side.

8. The adjustable weight balance slope gravity energy storage system according to any one of claims 1-3, characterized in that, The angle adjustment device (14) is a telescopic rod mechanism. One end of the telescopic rod mechanism is rotatably connected to the top frame (13), and the other end of the telescopic rod mechanism is rotatably connected to the main frame (11).

9. The adjustable weight balance slope gravity energy storage system according to any one of claims 1-3, characterized in that, The heavy object conveying and transfer platform (1) also includes a slope detection device and a control system. The slope detection device is connected to the control system, and the control system is connected to the angle adjustment device (14).

10. The adjustable weight balance slope gravity energy storage system according to any one of claims 1-3, characterized in that, The heavy load conveying and transfer platform (1) also includes a power connection disconnection device for connecting or disconnecting from an external power source.

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