A gravity energy storage and power generation device based on rail trains

Abstract

This invention relates to the field of gravity energy storage power generation, and discloses a gravity energy storage power generation device based on a railcar, comprising a parallel track, a railcar, and a power station. The parallel track is used for the railcar to run downwards under the action of gravity. Each flatbed transport car of the railcar has a drive plate installed at its bottom, with adjacent drive plates staggered. The drive plates are tensioned by leaf springs and contact the friction wheel of the power station to achieve power transmission. The power station includes the friction wheel, a transmission device, and a generator. The friction wheel is connected to the generator through the transmission device to convert mechanical energy into electrical energy. This invention uses a design where leaf springs provide tension to the drive plates, replacing the traditional hydraulic system. This not only reduces system complexity but also reduces dependence on hydraulic oil and sensors, avoiding the performance degradation problem of hydraulic systems in low-temperature environments.

Description

Technical Field

[0001] This invention relates to the field of gravity energy storage power generation technology, specifically to a gravity energy storage power generation device based on a railcar. Background Technology

[0002] Gravity energy storage technology, as a highly efficient method of energy storage and release, is widely used in power system peak shaving and frequency regulation. This technology stores gravitational potential energy by lifting an object to a high altitude. When energy needs to be released, this potential energy is converted into kinetic energy, which is then converted into electrical energy or other forms of energy through an energy conversion device. However, existing gravity energy storage devices still have many limitations in the energy conversion process, affecting the economic efficiency and reliability of their large-scale application.

[0003] In traditional gravity energy storage devices, hydraulic cylinders and other devices are often used to apply clamping force to ensure effective contact between power transmission components such as friction wheels and drive plates. While hydraulic systems offer advantages such as adjustable thrust and compact structure, their operation requires complex auxiliary equipment, including sensors, monitoring systems, and control systems. These additional devices not only increase system complexity but also lead to higher manufacturing and maintenance costs. Furthermore, the long-term operational reliability of hydraulic cylinders is limited, and their performance is easily affected by external environmental factors such as temperature changes. For example, in low-temperature environments, the viscosity of hydraulic oil increases, leading to reduced hydraulic system efficiency or even failure. These problems are particularly prominent in large-scale railcar gravity energy storage projects, where the large demand for tensioning devices further amplifies operating and maintenance costs while reducing the overall system stability.

[0004] In view of the problems in the existing technology, there is an urgent need for a new tensioning device that can replace the hydraulic system, reduce system complexity, improve operational reliability, and lower maintenance costs. Furthermore, it is necessary to optimize the overall device structure to achieve the economic efficiency and high efficiency of railcar gravity energy storage projects, in order to meet the needs of large-scale energy storage. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a gravity energy storage and power generation device based on rail trains, which solves the problems of high complexity of hydraulic systems, high maintenance costs, and poor operational reliability in traditional gravity energy storage devices, and provides a high-efficiency, stable, and easy-to-maintain gravity energy storage and power generation solution.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a parallel track, set on an inclined slope, for the rail train to travel from a high point to a low point on the track;

[0007] The railcar consists of multiple flatbed transport cars, each connected by a universal joint;

[0008] The power station, located below the parallel track, includes a generator, a transmission device, and two sets of friction wheels. The friction wheels are connected to the generator through the transmission device. The friction wheels are located inside the parallel track, and the axis connecting the two sets of friction wheels is perpendicular to the track.

[0009] The drive plate is set on both sides of the bottom of each flatbed transport vehicle. When the rail train passes by, the drive plate presses against the friction wheel and drives the friction wheel to rotate, so as to convert the gravitational potential energy of the rail train into the rotational kinetic energy of the friction wheel.

[0010] Leaf springs are installed on each flatbed transport car of the railcar and connected to the drive plate to provide tension to the drive plate so that the drive plate applies contact pressure toward the friction wheel.

[0011] Preferably, when the drive plate is not in contact with the friction wheel, with the direction of travel of the rail train as a reference, the end of the drive plate away from the direction of travel is inclined inward relative to the other end towards the parallel track, and the ends of adjacent drive plates are staggered.

[0012] Preferably, the drive plate is fixed with a first hinge buckle on the side closer to the forward direction of the rail train, and a second hinge buckle is fixed on the side of the drive plate away from the forward direction. One end of the second hinge buckle is hinged to a connecting buckle, one end of the first hinge buckle is hinged to one end of the leaf spring, and one end of the connecting buckle is hinged to the other end of the leaf spring.

[0013] Preferably, the drive plate is provided with a transition section on the side closest to the direction of travel of the rail train, with the transition section set at a certain angle to the drive plate.

[0014] Preferably, the flatbed transport vehicle includes a frame, with wheelsets mounted on the bottom of the frame via wheelset mounting seats. The frame is connected to the frame of an adjacent flatbed transport vehicle via a universal joint. The leaf springs are mounted on one side of the frame via a connecting frame, and the wheels on both sides of the wheelset are respectively located between the leaf springs and the drive plate on the corresponding sides.

[0015] Preferably, the transmission device is a gearbox, which is connected to the generator via a coupling. The gearbox includes an input shaft, an output shaft, and a gear set. The input shaft is connected to a friction wheel to receive power from the friction wheel. The input shaft is connected to the output shaft via the gear set, and the output shaft is connected to the generator to transmit power to the generator for power generation.

[0016] Preferably, at least one generator is provided, which is connected to the output shaft of the gearbox via a coupling, and the generator is connected to the energy storage device.

[0017] Preferably, the power station further includes a housing shell, which is disposed below the parallel track and installed at a height lower than the ground surface. The generator and transmission device are mounted inside the housing shell via a support base, and the friction wheel is disposed on the top of the support base.

[0018] This invention provides a gravity energy storage and power generation device based on a railcar. It has the following beneficial effects:

[0019] 1. This invention utilizes the gravitational potential energy of a railcar to drive the rotation of a friction wheel, and then efficiently transfers the mechanical energy to a generator via a transmission device to generate electricity. Compared to traditional energy storage systems, this invention reduces intermediate energy conversion steps and lowers energy loss, thereby significantly improving overall energy conversion efficiency.

[0020] 2. This invention uses a leaf spring to provide tension, replacing the traditional hydraulic system. This not only reduces system complexity but also decreases reliance on hydraulic oil and sensors, avoiding the performance degradation of hydraulic systems in low-temperature environments. The overall structure is simple and reliable, with low maintenance frequency and significantly reduced operating costs.

[0021] 3. This invention avoids interference between drive plates when multiple carriages are turning or climbing hills by designing the initial tilt angle of the drive plate and using a staggered installation method. Simultaneously, the gradual contact between the drive plate and the friction wheel, along with the power transmission method, enables all carriages of the train to operate continuously and efficiently and participate in power generation. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall layout of the present invention;

[0023] Figure 2 This is a schematic diagram of the rail train connection according to the present invention;

[0024] Figure 3 This is a schematic diagram of the overall structure of the power station of the present invention;

[0025] Figure 4 This is a schematic diagram of the transmission device structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the friction wheel and drive plate of the present invention.

[0027] Figure 6 This is a schematic diagram showing the transition state of the frictional force from the drive plate of each flatbed transport vehicle according to the present invention.

[0028] Among them, 10, parallel track; 20, railcar; 21, flatbed transport vehicle; 211, frame; 22, universal joint; 23, wheelset; 231, wheelset mounting frame; 30, power station; 31, housing shell; 32, generator; 33, transmission device; 331, input shaft; 332, output shaft; 333, gear set; 34, friction wheel; 35, coupling; 40, drive plate; 41, first hinge buckle; 42, second hinge buckle; 43, connecting buckle; 44, transition part; 50, leaf spring; 51, connecting frame. Detailed Implementation

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see the appendix Figure 1-6 This invention provides a gravity energy storage and power generation device based on a railcar 20. It aims to utilize the gravitational potential energy of the railcar 20 to convert this potential energy into electrical energy through a mechanical device. The device features a reasonable structure and reliable operation. The gravity energy storage and power generation device based on a railcar 20 mainly includes a parallel track 10, a railcar 20, a power station 30, a drive plate 40, and a leaf spring 50. The various components of the device are described in detail below.

[0031] Parallel Track 10

[0032] like Figure 1 As shown, in this embodiment, the parallel track 10 is one of the core components of the present invention. It is mainly used to support the operation of the rail train 20 and provide trajectory guidance to ensure that the rail train 20 can complete the energy storage and power generation cycle under efficient and stable conditions.

[0033] Typically, the parallel track 10 consists of two parallel steel rails, each fixed to a sleeper, which is further fixed to the roadbed structure. The rails are preferably made of high-strength alloy steel to provide good load-bearing capacity and durability, and to withstand mechanical loads and environmental corrosion during long-term operation.

[0034] As an alternative, in some embodiments, the sleepers can be made of prestressed concrete, which has strong compressive strength and stability, effectively reducing the vibration transmission of the track structure during train operation and enhancing the smoothness of operation.

[0035] Specifically, the track is set on a slope with elevation differences, allowing the railcar to travel from the higher part of the track to the lower part. Generally, the inclination angle of the track should be optimized according to the actual terrain and the load of the train.

[0036] A fixed area for power station 30 is provided below track 10 for installing power station 30. Two sets of friction wheels 34 are provided between the parallel rails of track 10.

[0037] Rail Train 20

[0038] like Figure 2 As shown, in this embodiment, the rail train 20 is an important component of the gravity energy storage and power generation device based on the rail train 20. It is mainly used to carry energy storage materials and drive the friction wheel 34 in the power station 30 by gravity, thereby realizing the conversion of gravitational potential energy into electrical energy.

[0039] Generally, the rail train 20 consists of multiple flatbed transport cars 21, which are connected to each other by universal joints 22 to improve the train's adaptability to different terrain conditions.

[0040] Specifically, the structure of each flatbed transport vehicle 21 includes a frame 211, wheelsets 23, leaf springs 50, and a drive plate 40, wherein:

[0041] The frame 211 is the core load-bearing structure of the flatbed transport vehicle 21. It is usually made of high-strength steel and can withstand heavy load conditions. The bottom of the frame 211 is equipped with wheelsets 23 via wheelset mounting seats 231. Each wheelset 23 consists of two wheels and one axle. The wheels are connected to the axle through rolling bearings, which can effectively reduce friction during operation.

[0042] The leaf spring 50 is mounted on one side of the frame 211 and is fixedly connected to the frame 211 via the connecting bracket 51. Specifically, the middle part of the leaf spring 50 is fixed to the connecting bracket 51 of the frame 211, and both ends are connected to the drive plate 40 to provide tension force so that the drive plate 40 maintains contact pressure with the friction wheel 34 of the power station 30.

[0043] The drive plate 40 is located at the bottom of the frame 211 and is connected to the frame 211 via a leaf spring 50. It is used to convert the gravitational potential energy of the rail train 20 into the rotational kinetic energy of the friction wheel 34. In addition, in order to ensure effective contact between the drive plate 40 and the friction wheel 34, the drive plate 40 is usually designed to have a certain initial tilt angle so that parallel contact can be achieved through the deformation of the leaf spring 50 during train operation.

[0044] Universal joint 22 is used to connect the frame 211 of adjacent flatbed transport vehicles 21. Its main function is to improve the train's adaptability under complex track conditions, especially in curved tracks or slope transition sections. The relative angle between the carriages can be adjusted by the free rotation of universal joint 22, thereby avoiding derailment or jamming.

[0045] In this embodiment, in order to further improve the operational safety of the railcar 20, a buffer device, such as a rubber buffer block or a hydraulic shock absorber, can be installed on the frame 211 of each flatbed transport car 21 to reduce the impact force on the train during operation, thereby extending the service life of each component.

[0046] Power station 30

[0047] like Figure 3 and Figure 4 As shown, in this embodiment, the power station 30 is one of the core components of the gravity energy storage and power generation device based on the rail train 20 of the present invention. Its main function is to receive the mechanical energy transmitted during the operation of the rail train 20, convert it into electrical energy through the generator 32, and output it to the energy storage device.

[0048] In this embodiment, the power station 30 includes a friction wheel 34, a transmission device 33, a generator 32, a housing 31, and a support base. The functions and arrangement of each component are carefully designed to ensure the high efficiency and reliability of energy transfer and conversion.

[0049] Specifically, two sets of friction wheels 34 are disposed on the inner side of the parallel track 10, with their axes perpendicular to the track, for contacting the drive plate 40 of the rail train 20 and receiving the mechanical energy of the train. In some embodiments, the surface of the friction wheels 34 may be designed with a striped or grooved structure to enhance the friction when in contact with the drive plate 40 and reduce slippage.

[0050] Friction wheel 34 is connected to transmission device 33 via input shaft 331. Transmission device 33 adopts a gearbox structure, which includes input shaft 331, output shaft 332 and gear set 333. It is used to regulate the speed of the power transmitted by friction wheel 34. Input shaft 331 is directly connected to friction wheel 34 and is used to receive the rotational power of friction wheel 34. The gear ratio of gear set 333 can be optimized according to the requirements of generator 32.

[0051] Alternatively, gear set 333 employs a multi-stage gear transmission structure, consisting of multiple gear sets 333 of different diameters, enabling a wide range of speed and torque adjustments. In one possible implementation, gear set 333 includes an internal lubrication chamber to reduce gear wear during operation and improve transmission efficiency.

[0052] The output shaft 332 is connected to the generator 32 via a coupling 35. The function of the coupling 35 is to transmit the output power of the gearbox to the generator 32, while absorbing shaft misalignment caused by assembly errors or operating vibrations, ensuring the stability of power transmission. Generally, the coupling 35 is either a flexible coupling 35 or a rigid coupling 35, and the specific type is selected according to the power of the generator 32 and the output characteristics of the transmission device 33.

[0053] Generator 32 is used to convert the mechanical energy output from transmission device 33 into electrical energy and output it to energy storage device or power grid. At least one generator 32 is provided. As a possible implementation, generator 32 can be configured in pairs to improve power generation efficiency and system redundancy. The type of generator 32 can be synchronous generator 32 or asynchronous generator 32, depending on the technical requirements of the power grid or energy storage device.

[0054] The power station 30 also includes a housing 31, which protects the internal generator 32 and transmission device 33 from external environmental influences. The housing 31 is located below the parallel track 10, and its installation height is below the ground surface to reduce the footprint and excavation depth.

[0055] The generator 32 and the transmission device 33 are fixedly mounted on the inner side of the housing 31 via a support base. In some embodiments, a shock-absorbing pad layer, such as a rubber shock-absorbing pad or an elastic metal pad, may be provided at the bottom of the support base to reduce vibration transmission during generator 32 operation and extend the service life of the equipment.

[0056] Driver board 40

[0057] like Figure 5 and Figure 6 As shown, in this embodiment, the main function of the drive plate 40 is to convert the gravitational potential energy generated during the operation of the rail train 20 into the rotational kinetic energy of the friction wheel 34 by contacting the friction wheel 34 of the power station 30, thereby driving the power station 30 to complete the output of electrical energy.

[0058] Typically, the drive plate 40 is mounted on the bottom of the railcar 20 and connected to the frame 211 via a leaf spring 50 to provide the necessary tension and displacement capacity. The structural design of the drive plate 40 must fully consider its compatibility with the friction wheel 34 and the operational coordination between multiple carriages.

[0059] Specifically, the drive plate 40 is arranged with its end away from the direction of travel of the rail train 20 tilted towards the inside of the parallel track 10 relative to the other end. This tilted arrangement allows the rear end of the front car drive plate 40 and the front end of the rear car drive plate 40 to be offset from each other on the horizontal plane when they are not in contact with the friction wheel 34, forming a certain space. This space can accommodate the vertical or horizontal relative movement between the rear end of the front car drive plate 40 and the front end of the rear car drive plate 40 when the rail train 20 is climbing or turning, thereby avoiding collisions and interference between the front and rear car drive plates 40 when the rail train 20 is climbing or turning.

[0060] Alternatively, the drive plate 40 is provided with a first hinge buckle 41 and a second hinge buckle 42 at both ends for connecting to the leaf spring 50 and the connecting buckle 43, specifically:

[0061] The first hinge buckle 41 is located on the side near the direction of travel of the rail train 20, and one end of it is hinged to the front end of the leaf spring 50.

[0062] The second hinge buckle 42 is located on the side away from the direction of travel, and one end of it is hinged to the rear end of the leaf spring 50 via the connecting buckle 43.

[0063] This double-hinged design ensures that the drive plate 40 has good rotational freedom and adaptability during operation. In particular, when the leaf spring 50 deforms, the drive plate 40 can tilt, contact and limit smoothly, and can support the tilt setting of the drive plate 40.

[0064] In one possible implementation, a transition section 44 is provided on the side of the drive plate 40 near the forward direction. The transition section 44 is arranged at a certain angle to the drive plate 40 to provide a smooth transition area when the drive plate 40 gradually contacts the friction wheel 34, thereby reducing the wear of the drive plate 40 and the friction wheel 34 by the impact force.

[0065] During train operation, when the drive plate 40 contacts the friction wheel 34, the drive plate 40 is subjected to an inward-outward compressive force and displaces outward. At the same time, the leaf spring 50 undergoes elastic deformation and generates tension. This combination of deformation and tension ensures stable contact between the drive plate 40 and the friction wheel 34. As the contact position between the drive plate 40 and the friction wheel 34 changes, the angle between the drive plate 40 and the track gradually decreases until the drive plate 40 is parallel to the track. Its rear end is limited by the wheelset mounting seat 231, which maintains the stability of the drive plate 40 during operation.

[0066] In this embodiment, when the drive plate 40 of the preceding carriage of the train completes contact with the friction wheel 34 and reaches the limit, its rear end will abut against the front end of the drive plate 40 of the following carriage. This design enables the drive plate 40 of the next carriage to smoothly contact the friction wheel 34 and repeat the aforementioned contact, displacement, and tensioning process, thereby ensuring that all carriages of the train can sequentially engage with the friction wheel 34 to achieve gradual power transmission.

[0067] To improve the operational adaptability of multi-carriage trains under complex track conditions, the drive plate 40 in this embodiment is designed to fully consider the interference problems that may occur when the train 20 is turning corners and climbing slopes. By setting an inclined arrangement, a transition section 44, and a double hinge, the running trajectory of the drive plate 40 can match the movement of the train 20 and avoid interference between the front and rear carriages.

[0068] 50 leaf springs

[0069] like Figure 5 As shown in this embodiment, the leaf spring 50 is one of the important components of the rail train 20. Its main function is to provide a stable tension force for the drive plate 40, ensure reliable contact between the drive plate 40 and the friction wheel 34, and absorb and buffer the mechanical impact and vibration caused by the movement of the rail train 20 during operation.

[0070] Generally, leaf springs 50 employ a multi-layered, stacked elastic steel plate structure, providing the required tension and flexible support through elastic deformation.

[0071] Specifically, the leaf spring 50 is mounted on one side of the frame 211 of the railcar 20 via a connecting bracket 51. The connecting bracket 51 can be fixed by bolting or welding to provide sufficient strength and rigidity. In some embodiments, multiple mounting holes may be provided on the connecting bracket 51 for adjusting the mounting angle and position of the leaf spring 50 to facilitate installation and maintenance.

[0072] Alternatively, one end of the leaf spring 50 is hinged to the drive plate 40 via a hinge buckle, and the other end is hinged to the rear of the drive plate 40 via a connecting buckle 43. Specifically, the hinge design between the leaf spring 50 and the drive plate 40 ensures the free rotation and movement of the drive plate 40 under stress, while avoiding stress concentration caused by rigid connection.

[0073] In one possible implementation, the initial installation angle of the leaf spring 50 forms a certain angle with the track plane, typically between 10° and 20°. This inclined arrangement ensures that the drive plates 40 of the front and rear carriages are staggered when the railcar 20 is climbing or turning, thereby avoiding interference due to spatial overlap.

[0074] When the railcar 20 is running, the leaf spring 50 undergoes elastic deformation after being stressed by the drive plate 40, generating a continuous tension force. This tension force acts on the drive plate 40, maintaining stable contact with the friction wheel 34. Generally, the tension range of the leaf spring 50 can be adjusted according to the load conditions and operating speed of the railcar 20. In some embodiments, precise adjustment of the tension force can be achieved by changing the thickness, length, or number of layers of the leaf spring 50.

[0075] During train operation, when the drive plate 40 contacts the friction wheel 34, the elastic deformation of the leaf spring 50 causes the drive plate 40 to gradually move outward until the contact surface between the drive plate 40 and the friction wheel 34 is completely parallel. At this time, the elastic restoring force of the leaf spring 50 stably holds the drive plate 40 in the limit position, ensuring the continuity and stability of its power transmission.

[0076] In summary, this invention converts gravitational potential energy into electrical energy by using a railcar 20 running on an inclined track. The device includes a railcar 20, a power station 30, and a parallel track 10. The railcar 20 consists of multiple flatbed transport cars 21, with a drive plate 40 mounted at the bottom and tensioned by leaf springs 50, ensuring stable contact between the drive plate 40 and the friction wheels 34 of the power station 30. The friction wheels 34 are connected to a generator 32 via a transmission device 33, efficiently converting the mechanical energy of the railcar 20 into electrical energy output. By rationally designing the inclination angle of the drive plate 40, the tensioning structure of the leaf springs 50, and the component layout of the power station 30, the interference problem during the operation of multiple train cars is solved, while ensuring the stability and efficiency of the system operation. This invention is applicable to various complex terrain conditions and has the advantages of high energy conversion efficiency, reliable structure, and low maintenance cost.

[0077] The gravity energy storage power generation method of the present invention includes the following steps:

[0078] S1. Move the railcar to a high point on the track and load gravity blocks onto the train to prepare for the subsequent energy storage process.

[0079] S2. Downward movement of the rail train: The rail train enters the downward track and moves downward along the track under the action of gravity. During the journey, the drive plate of the rail train squeezes the friction wheel of the power station through the tension force generated by the steel leaf spring, converting potential energy into rotational power for the friction wheel.

[0080] S3. Energy Conversion and Power Generation: Under the action of the rail train drive plate squeezing the friction wheel and moving it forward, the friction wheel begins to rotate. Its rotational power is transmitted to the generator through the transmission device. The gear set in the transmission device regulates the speed of the power. The generator efficiently converts the received mechanical energy into electrical energy output and stores it in energy storage equipment or transmits it directly to the power grid.

[0081] S4. Return and Cyclic Operation: After power generation is completed, the railcar descends to a low position to unload the material and then ascends to prepare for the next cyclic operation.

[0082] This method enables rail trains to efficiently convert potential energy into electrical energy under the influence of gravity. It is suitable for large-scale energy storage projects or power regulation needs, and features simple system operation, high energy conversion efficiency, and adaptability to complex terrain.

[0083] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gravity energy storage and power generation device based on a railcar, characterized in that, include: Parallel tracks are set on an inclined slope to allow rail trains to travel from a higher point to a lower point. The railcar consists of multiple flatbed transport cars, each connected by a universal joint; The power station, located below the parallel track, includes a generator, a transmission device, and two sets of friction wheels. The friction wheels are connected to the generator through the transmission device. The friction wheels are located inside the parallel track, and the axis connecting the two sets of friction wheels is perpendicular to the track. The drive plate is set on both sides of the bottom of each flatbed transport vehicle. When the rail train passes by, the drive plate contacts the friction wheel and drives the friction wheel to rotate and press, so as to convert the gravitational potential energy of the rail train into the rotational kinetic energy of the friction wheel. A leaf spring is installed on each flatbed transport car of the railcar and connected to the drive plate to provide tension to the drive plate so that the drive plate applies contact pressure toward the friction wheel. When the drive plate is not in contact with the friction wheel, with the direction of the rail train as the reference, the end of the drive plate away from the direction of the train is inclined towards the inside of the parallel track relative to the other end, and the two ends of adjacent drive plates are staggered. The flatbed transport vehicle includes a frame, with wheelsets mounted on the bottom of the frame via wheelset mounting seats. The frame is connected to the frame of an adjacent flatbed transport vehicle via a universal joint, and the leaf spring is mounted on one side of the frame via a connecting frame. The transmission device is a gearbox, which is connected to the generator via a coupling. The gearbox includes an input shaft, an output shaft, and a gear set. The input shaft is connected to a friction wheel to receive power from the friction wheel. The input shaft is connected to the output shaft via the gear set, and the output shaft is connected to the generator to transmit power to the generator for power generation.

2. The gravity energy storage and power generation device based on a railcar according to claim 1, characterized in that, The drive plate is fixed with the direction of the train's movement as a reference. A first hinge buckle is fixed on the side of the drive plate closer to the direction of movement, and a second hinge buckle is fixed on the side of the drive plate away from the direction of movement. A connecting buckle is hinged to one end of the second hinge buckle. One end of the first hinge buckle is hinged to one end of the leaf spring, and one end of the connecting buckle is hinged to the other end of the leaf spring.

3. The gravity energy storage and power generation device based on a railcar according to claim 2, characterized in that, The drive plate is based on the direction of travel of the rail train, and a transition section is provided on the side closer to the direction of travel. The transition section is set at a certain angle to the drive plate.

4. The gravity energy storage and power generation device based on a railcar according to claim 1, characterized in that, The wheels on both sides of the wheelset are located between the leaf springs and the drive plate on the corresponding sides.

5. A gravity energy storage and power generation device based on a railcar according to claim 1, characterized in that, At least one generator is provided, which is connected to the output shaft of the gearbox via a coupling, and the generator is connected to the energy storage device.

6. A gravity energy storage and power generation device based on a railcar according to claim 1, characterized in that, The power station also includes a housing shell, which is located below the parallel rail and is installed at a height lower than the ground surface. The generator and transmission device are installed inside the housing shell via a support base, and the friction wheel is located on top of the support base.

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