Gravity energy storage power generation device based on rail train

Abstract

The invention relates to the field of gravity energy storage power generation, and discloses a rail train-based gravity energy storage power generation device, which comprises parallel rails, a rail train and a power station, and is characterized in that the parallel rails are used for the rail train to run downwards along the rails under the action of gravity; a driving plate is installed at the bottom of each section of flat transport vehicle of the rail train, the adjacent driving plates are arranged in a staggered mode, and the driving plates provide tensioning force through steel plate springs and make contact with friction wheels of a power station so as to achieve power transmission. The power station comprises a friction wheel, a transmission device and a generator, and the friction wheel is connected with the generator through the transmission device and used for converting mechanical energy into electric energy. The design that the steel plate spring provides tensile force for the driving plate is adopted, a traditional hydraulic system is replaced, system complexity is reduced, dependence on hydraulic oil and a sensor is reduced, and the problem that the performance of the hydraulic system is reduced in the low-temperature environment is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of gravity energy storage power generation, and in particular to a gravity energy storage power generation device based on a rail train. Background Art

[0002] Gravity energy storage technology is a highly efficient way to store and release energy and is widely used in peak load and frequency regulation of power systems. This technology stores gravitational potential energy by lifting objects to a high altitude. When the energy needs to be released, the potential energy is converted into kinetic energy, and then the kinetic energy is 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, which affects the economy and reliability of their large-scale application.

[0003] In traditional gravity energy storage devices, a clamping force is often applied through devices such as hydraulic cylinders to ensure effective contact between power transmission devices such as friction wheels and drive plates. Although the hydraulic system has the advantages of adjustable thrust and compact structure, its operation requires complex auxiliary equipment such as sensors, monitoring systems and control systems. These additional equipment not only increase the complexity of the system, but also lead to higher manufacturing and maintenance costs. In addition, the long-term operating reliability of the hydraulic cylinder is limited, and its performance is easily affected by external environment such as temperature changes. For example, in a low temperature environment, the viscosity of the hydraulic oil increases, resulting in reduced efficiency or even failure of the hydraulic system. These problems are particularly prominent in large-scale rail train gravity energy storage projects, because the demand for tensioning devices is large, and the use of hydraulic systems further amplifies the operating and maintenance costs, while reducing the overall stability of the system.

[0004] In view of the above problems in the prior art, there is an urgent need for a new tensioning device that can replace the hydraulic system and reduce system complexity, improve operational reliability and reduce maintenance costs. In addition, it is also necessary to optimize the overall device structure to achieve the economy and efficiency of the rail train gravity energy storage project to meet the needs of large-scale energy storage. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a gravity energy storage power generation device based on a rail train, which solves the problems of high complexity of the hydraulic system, high maintenance cost and poor operation reliability in traditional gravity energy storage devices, and provides an efficient, stable and easy-to-maintain gravity energy storage power generation solution.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: parallel tracks are arranged on an inclined slope surface for rail trains to travel from a high point to a low point on the track; A rail train, comprising a plurality of flatbed transport vehicles, each of which is connected by a universal joint; The power station is arranged below the parallel tracks, and 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 arranged on the inner side of the parallel tracks, and the connecting axis of the two sets of friction wheels is perpendicular to the tracks. The driving plates are arranged on both sides of the bottom of each flatbed transport vehicle. When the rail train passes by, the driving plates are pressed into contact with the friction wheels and drive the friction wheels to rotate, so as to convert the gravitational potential energy of the rail train into the rotational kinetic energy of the friction wheels; The leaf spring is arranged on each flatbed transport vehicle of the rail train and connected to the drive plate, and is used to provide tension to the drive plate so that the drive plate applies contact pressure toward the friction wheel.

[0007] Preferably, when the driving plate is not in contact with the friction wheel, based on the forward direction of the rail train, one end of the driving plate away from the forward direction is tilted toward the inner side of the parallel track relative to the other end, and the two ends of adjacent driving plates are staggered. Preferably, the driving plate is based on the forward direction of the rail train, and a first hinged buckle is fixed on the side close to the forward direction, and a second hinged buckle is fixed on the side of the driving plate away from the forward direction, one end of the second hinged buckle is hinged to a connecting buckle, one end of the first hinged 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.

[0008] Preferably, the driving plate is based on the forward direction of the rail train, and a transition portion is provided on the side close to the forward direction, and the transition portion is arranged at a certain angle to the driving plate.

[0009] Preferably, the flatbed transport vehicle includes a frame, a wheelset is mounted on the bottom of the frame via a wheelset mounting seat, the frame is connected to the frame of an adjacent flatbed transport vehicle via a universal joint, the leaf spring is 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 spring and the driving plate on the corresponding side.

[0010] Preferably, the transmission device is a gearbox, which is connected to the generator through a coupling, and the gearbox includes an input shaft, an output shaft and a gear set, wherein the input shaft is connected to the friction wheel for receiving power from the friction wheel, the input shaft is connected to the output shaft through the gear set, and the output shaft is connected to the generator for transmitting power to the generator for generating electricity.

[0011] Preferably, at least one generator is provided, which is connected to the output shaft of the gear box via a coupling, and the generator is connected to the energy storage device.

[0012] Preferably, the power station also includes a box shell, which is arranged on the lower side of the parallel track and its installation height is lower than the ground surface. The generator and the transmission device are installed on the inner side of the box shell through a support base, and the friction wheel is arranged on the top of the support base.

[0013] The present invention provides a gravity energy storage power generation device based on a rail train. It has the following beneficial effects: 1. The present invention drives the friction wheel to rotate through the gravitational potential energy of the rail train, and efficiently transmits the mechanical energy to the generator through the transmission device to generate electricity. Compared with the traditional energy storage system, the present invention reduces the intermediate energy conversion link and reduces energy loss, thereby significantly improving the overall energy conversion efficiency.

[0014] 2. The present invention adopts the design of using leaf spring to provide tension force, replacing the traditional hydraulic system, which not only reduces the complexity of the system, but also reduces the dependence on hydraulic oil and sensors, avoiding the problem of performance degradation of the hydraulic system in low temperature environment. The overall structure is simple and reliable, the maintenance frequency is low, and the operating cost is significantly reduced.

[0015] 3. The present invention avoids the interference problem between the driving plates when multiple carriages are turning and climbing by designing the initial inclination angle of the driving plate and installing it in a staggered manner. At the same time, the gradual contact and power transmission method between the driving plate and the friction wheel enable all carriages of the train to operate continuously and efficiently and participate in power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall arrangement of the present invention; Figure 2 It is a schematic diagram of the connection of the rail train of the present invention; Figure 3 It is a schematic diagram of the overall structure of the power station of the present invention; Figure 4 It is a schematic diagram of the transmission structure of the present invention; Figure 5 It is a schematic diagram of the cooperation between the friction wheel and the driving plate of the present invention; Figure 6 It is a schematic diagram of the transition state of the friction force from the driving plate of each flatbed transport vehicle of the present invention; Among them, 10, parallel tracks; 20, rail train; 21, flatbed transporter; 211, frame; 22, universal joint; 23, wheelset; 231, wheelset mounting frame; 30, power station; 31, box 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 articulated buckle; 42, second articulated buckle; 43, connecting buckle; 44, transition part; 50, leaf spring; 51, connecting frame. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Please see attached Figure 1-6 The embodiment of the present invention provides a gravity energy storage power generation device based on a rail train 20, which is intended to utilize the gravitational potential energy of the rail train 20 and convert the potential energy into electrical energy through a mechanical device, with a reasonable structure and reliable operation. The gravity energy storage power generation device based on the rail train 20 in the embodiment of the present invention mainly includes parallel tracks 10, a rail train 20, a power station 30, a drive plate 40 and a leaf spring 50. The various components of the device of the present invention are described in detail below.

[0019] Parallel Track 10 like Figure 1 As shown, in this embodiment, the parallel track 10 is one of the core components of the present invention, which is mainly used to carry the operation of the rail train 20 and provide track guidance to ensure that the rail train 20 can complete the energy storage and power generation cycle under efficient and stable conditions.

[0020] Generally, the parallel track 10 is composed of two parallel rails, each of which is fixed on a sleeper, and the sleeper is further fixed in the roadbed structure. The material of the rail is preferably high-strength alloy steel to provide good bearing capacity and durability to adapt to mechanical loads and environmental corrosion during long-term operation.

[0021] As an option, in some embodiments, the sleepers can be made of prestressed concrete, which has strong compressive resistance and stability, can effectively reduce the vibration transmission of the track structure when the train is running, and enhance the smoothness of operation.

[0022] Specifically, the track is set on a slope with different heights to allow rail trains to travel from high to low. Generally, the inclination angle of the track should be optimized based on the actual terrain and train load.

[0023] A power station 30 fixing area is provided below the track 10 for installing the power station 30 , and two groups of friction wheels 34 are provided between the parallel rails of the track 10 .

[0024] Rail Train 20 like Figure 2As shown, in this embodiment, the rail train 20 is an important component of the gravity energy storage power generation device based on the rail train 20, which 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.

[0025] Generally, the rail train 20 is composed of a plurality of flatbed transport vehicles 21, and each flatbed transport vehicle 21 is connected to each other via a universal joint 22 to improve the adaptability of the train to operate under different terrain conditions.

[0026] Specifically, the structure of each flatbed transport vehicle 21 includes a frame 211, a wheel pair 23, a leaf spring 50 and a drive plate 40, wherein: The frame 211 is the core load-bearing structure of the flatbed transport vehicle 21, which is usually made of high-strength steel and can withstand heavy load conditions. The bottom of the frame 211 is equipped with a wheelset 23 through a wheelset mounting seat 231. Each wheelset 23 consists of two wheels and an axle. The wheels are connected to the axle through rolling bearings, which can effectively reduce friction during operation.

[0027] The leaf spring 50 is mounted on one side of the frame 211 and is fixedly connected to the frame 211 through a connecting frame 51. Specifically, the middle portion of the leaf spring 50 is fixed to the connecting frame 51 of the frame 211, and both ends are connected to the driving plate 40 to provide tension so that the driving plate 40 maintains contact pressure with the friction wheel 34 of the power station 30.

[0028] The driving plate 40 is disposed at the bottom of the frame 211 and connected to the frame 211 through the leaf spring 50, and is used to convert the gravitational potential energy of the rail vehicle 20 into the rotational kinetic energy of the friction wheel 34. In addition, in order to ensure effective contact between the driving plate 40 and the friction wheel 34, the driving plate 40 is usually designed to have a certain initial inclination angle so that parallel contact can be achieved through the deformation of the leaf spring 50 during the operation of the train.

[0029] The universal joint 22 is used to connect the frames 211 of adjacent flatbed transport vehicles 21. Its main function is to improve the adaptability of the train under complex track conditions, especially in curved tracks or ramp transition sections. The relative angle between the carriages can be adjusted by the free rotation of the universal joint 22, thereby avoiding derailment or jamming.

[0030] In this embodiment, in order to further improve the operating safety of the rail train 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 vehicle 21 to reduce the impact force exerted on the train during operation, thereby extending the service life of each component.

[0031] Power Station 30 like Figure 3 and Figure 4As shown, in this embodiment, the power station 30 is one of the core parts of the gravity energy storage 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.

[0032] In this embodiment, the power station 30 includes a friction wheel 34, a transmission device 33, a generator 32, a box shell 31 and a support base. The functions and arrangements of each component are carefully designed to ensure the high efficiency and reliability of energy transmission and conversion.

[0033] Specifically, two sets of friction wheels 34 are arranged on the inner side of the parallel rails 10, with their axes perpendicular to the rails, for contacting the driving plate 40 of the rail train 20 and receiving the mechanical energy of the train. In some embodiments, the surface of the friction wheel 34 can be designed with stripes or grooves to enhance the friction when contacting the driving plate 40 and reduce slippage.

[0034] The friction wheel 34 is connected to the transmission device 33 through the input shaft 331. The transmission device 33 adopts a gear box structure. The gear box includes an input shaft 331, an output shaft 332 and a gear set 333, which is used to regulate the speed of the power transmitted by the friction wheel 34. The input shaft 331 is directly connected to the friction wheel 34 to receive the rotational power of the friction wheel 34; the gear ratio of the gear set 333 can be optimized according to the requirements of the generator 32.

[0035] As an option, the gear set 333 adopts a multi-stage gear transmission structure, which is composed of multiple gear sets 333 of different diameters, and can achieve a wide range of speed and torque adjustment. In a possible implementation, a lubricating oil cavity is provided inside the gear set 333 to reduce wear during gear operation and improve transmission efficiency.

[0036] The output shaft 332 is connected to the generator 32 through the coupling 35. The function of the coupling 35 is to transmit the output power of the gearbox to the generator 32, and at the same time absorb the axis deviation caused by assembly error or operation vibration to ensure the stability of power transmission. Generally, the coupling 35 adopts an elastic 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.

[0037] The generator 32 is used to convert the mechanical energy output by the transmission device 33 into electrical energy and output it to the energy storage device or the power grid. At least one generator 32 is provided. As a possible implementation, the generator 32 can be configured in pairs to improve power generation efficiency and system redundancy. The type of the generator 32 can be a synchronous generator 32 or an asynchronous generator 32, and the specific selection depends on the technical requirements of the power grid or the energy storage device.

[0038] The power station 30 further includes a housing 31, which is used to protect the internal generator 32 and transmission device 33 from the external environment. The housing 31 is arranged on the lower side of the parallel track 10, and its installation height is lower than the ground surface to reduce the occupied area and the excavation depth of the foundation pit.

[0039] The generator 32 and the transmission device 33 are fixedly mounted on the inner side of the box shell 31 through a support base. In some embodiments, a shock-absorbing pad layer, such as a rubber shock-absorbing pad or an elastic metal pad, can also be provided at the bottom of the support base to reduce the vibration transmission during the operation of the generator 32 and extend the service life of the equipment.

[0040] Driver board 40 like Figure 5 and Figure 6 As shown, in this embodiment, the main function of the driving 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 power output.

[0041] Generally, the driving plate 40 is installed at the bottom of the rail vehicle 20 and connected to the frame 211 through the leaf spring 50 to provide the necessary tension and displacement capacity. The structural design of the driving plate 40 needs to fully consider the matching with the friction wheel 34 and the operation coordination between multiple carriages.

[0042] Specifically, the drive plate 40 is arranged with the forward direction of the rail train 20 as a reference, and one end away from the forward direction is inclined toward the inner side of the parallel rail 10 relative to the other end. This inclined 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 staggered from each other in the horizontal plane when they are not in contact with the friction wheel 34, forming a certain space that 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 climbs a slope or turns a corner, thereby avoiding collision and interference between the front and rear car drive plates 40 when the rail train 20 climbs a slope or turns a corner.

[0043] As an option, the two ends of the driving plate 40 are respectively provided with a first hinge buckle 41 and a second hinge buckle 42 for connecting with the leaf spring 50 and the connecting buckle 43. Specifically: The first hinge buckle 41 is arranged on a side close to the forward direction of the rail vehicle 20 , and one end of the first hinge buckle 41 is hinged to the front end of the leaf spring 50 .

[0044] The second hinge buckle 42 is arranged on a side away from the advancing direction, and one end of the second hinge buckle 42 is hinged to the rear end of the leaf spring 50 through the connecting buckle 43 .

[0045] This double-hinged buckle design can ensure that the drive plate 40 has good rotational freedom and adaptability during operation, especially when the leaf spring 50 is deformed, the drive plate 40 can tilt, contact and limit smoothly, and can support the tilt setting of the drive plate 40.

[0046] In one possible implementation, a transition portion 44 is further provided on the side of the drive plate 40 close to the forward direction. The transition portion 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 caused by the impact force.

[0047] During the operation of the train, when the driving plate 40 contacts the friction wheel 34, the driving plate 40 is subjected to the squeezing force from the inside to the outside and moves outward, and at the same time, the leaf spring 50 undergoes elastic deformation and generates tension. The cooperation of this deformation and tension ensures the stable contact between the driving plate 40 and the friction wheel 34. As the contact position between the driving plate 40 and the friction wheel 34 changes, the angle between the driving plate 40 and the track gradually decreases until the driving plate 40 is parallel to the track, and its rear end is limited by the wheelset mounting seat 231. The limiting of the wheelset mounting seat 231 can maintain the stability of the driving plate 40 during operation.

[0048] In this embodiment, when the driving plate 40 of the front carriage of the train completes contact with the friction wheel 34 and reaches the limit position, its rear end will abut against the front end of the driving plate 40 of the rear carriage. This design enables the driving 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 cooperate with the friction wheel 34 in turn to achieve gradual transmission of power.

[0049] In order to improve the operational adaptability of multiple carriages under complex track conditions, the design of the drive plate 40 in this embodiment fully considers the interference problem that may occur when the rail train 20 is turning and climbing. By setting the inclined arrangement, the transition part 44 and the double hinge buckle, the running track of the drive plate 40 can match the movement of the rail train 20, and the interference between the front and rear carriages can be avoided.

[0050] Leaf spring 50 like Figure 5 As shown, in this embodiment, the leaf spring 50 is one of the important components of the rail train 20, and its main function is to provide a stable tensioning 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 shock and vibration caused by the movement of the rail train 20 during operation.

[0051] Generally, the leaf spring 50 adopts a multi-layered elastic steel plate structure, which provides the required tensioning force and flexible support through elastic deformation.

[0052] Specifically, the leaf spring 50 is installed on one side of the frame 211 of the rail vehicle 20 through the connecting frame 51. The connecting frame 51 can be fixed by bolting or welding to provide sufficient strength and rigidity. In some embodiments, in order to facilitate installation and maintenance, a plurality of mounting holes can be reserved on the connecting frame 51 for adjusting the installation angle and position of the leaf spring 50.

[0053] As an option, one end of the leaf spring 50 is hinged to the driving plate 40 through a hinge buckle, and the other end is hinged to the rear of the driving plate 40 through a connecting buckle 43. Specifically, the hinge design between the leaf spring 50 and the driving plate 40 can ensure the free rotation and movement of the driving plate 40 when subjected to force, while avoiding stress concentration caused by a rigid connection.

[0054] In a possible implementation, the initial installation angle of the leaf spring 50 forms a certain angle with the track plane, and the angle is generally between 10° and 20°. This inclined arrangement can ensure that the driving plates 40 of the front and rear carriages can be staggered when the rail train 20 is climbing or turning, thereby avoiding interference caused by spatial overlap.

[0055] When the rail vehicle 20 is running, the leaf spring 50 will be elastically deformed after the driving plate 40 is stressed, and a continuous tension force will be generated. The tension force acts on the driving plate 40 to keep it in stable contact with the friction wheel 34. Generally, the tension force range of the leaf spring 50 can be adjusted according to the load condition and running speed of the rail vehicle 20. In some embodiments, by changing the thickness, length or number of superimposed layers of the leaf spring 50, precise adjustment of the tension force can be achieved.

[0056] During the operation of the train, after the driving plate 40 contacts the friction wheel 34, the elastic deformation of the leaf spring 50 causes the driving plate 40 to gradually move outward until the contact surface of the driving plate 40 is completely parallel to the friction wheel 34. At this time, the elastic restoring force of the leaf spring 50 stably maintains the driving plate 40 at the limit position, ensuring the continuity and stability of its power transmission.

[0057] In general, the present invention converts gravitational potential energy into electrical energy through a rail train 20 running on an inclined track. The device includes a rail train 20, a power station 30 and a parallel track 10, wherein the rail train 20 is composed of a multi-section flatbed transport vehicle 21, a drive plate 40 is installed at the bottom and a tensioning force is provided by a leaf spring 50 to ensure that the drive plate 40 is in stable contact with the friction wheel 34 of the power station 30. The friction wheel 34 is connected to the generator 32 through a transmission device 33 to efficiently convert the mechanical energy of the rail train 20 into electrical energy output. By reasonably designing the inclination angle of the drive plate 40, the tensioning structure of the leaf spring 50 and the layout of the components of the power station 30, the interference problem during the operation of multiple carriages of the train is solved, while ensuring the stability and efficiency of the system operation. The present invention is applicable to a variety of complex terrain conditions and has the advantages of high energy conversion efficiency, reliable structure and low maintenance cost.

[0058] The gravity energy storage power generation method of the present invention comprises the following steps: S1. Drive the rail train to a high point on the track and load gravity blocks on the train to prepare for the subsequent energy storage process.

[0059] 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 movement, the driving plate of the rail train squeezes the friction wheel of the power station through the tension force generated by the leaf spring, converting the potential energy into rotational power for the friction wheel.

[0060] S3. Energy conversion and power generation: When the rail train driving plate squeezes the friction wheel and moves forward, the friction wheel starts to rotate, and its rotational power is transmitted to the generator through the transmission device. The gear set in the transmission device adjusts the speed of the power, and the generator efficiently converts the received mechanical energy into electrical energy output, which is stored in the energy storage device or directly transmitted to the power grid.

[0061] S4, return and circulation operation: After completing power generation, the rail train descends to a low position to unload and then goes up to prepare for the next circulation operation.

[0062] Through this method, the rail train can achieve efficient conversion of potential energy into electrical energy under the action of gravity, which is suitable for large-scale energy storage projects or power regulation needs, and has the characteristics of simple system operation, high energy conversion efficiency, and adaptability to complex terrain.

[0063] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gravity energy storage power generation device based on a rail train, characterized in that: include: Parallel tracks are set on an inclined slope for rail trains to travel from high to low points on the track; A rail train, comprising a plurality of flatbed transport vehicles, each of which is connected by a universal joint; The power station is arranged below the parallel tracks, and 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 arranged on the inner side of the parallel tracks, and the connecting axis of the two sets of friction wheels is perpendicular to the tracks. The driving plates are arranged on both sides of the bottom of each flatbed transport vehicle. When the rail train passes by, the driving plates contact the friction wheels and drive the friction wheels to rotate and press tightly, so as to convert the gravitational potential energy of the rail train into the rotational kinetic energy of the friction wheels; The leaf spring is arranged on each flatbed transport vehicle of the rail train and is connected to the drive plate to provide tension to the drive plate so that the drive plate applies contact pressure toward the friction wheel.

2. A gravity energy storage power generation device based on a rail train according to claim 1, characterized in that: When the driving plate is not in contact with the friction wheel, based on the forward direction of the rail train, one end of the driving plate away from the forward direction is tilted toward the inner side of the parallel track relative to the other end, and the two ends of adjacent driving plates are staggered.

3. A gravity energy storage power generation device based on a rail train according to claim 2, characterized in that: The driving plate is based on the forward direction of the rail train, and a first hinged buckle is fixed on the side close to the forward direction, and a second hinged buckle is fixed on the side of the driving plate away from the forward direction. One end of the second hinged buckle is hinged to a connecting buckle, one end of the first hinged 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.

4. A gravity energy storage power generation device based on a rail train according to claim 3, characterized in that: The driving plate is based on the forward direction of the rail train, and a transition portion is arranged on one side close to the forward direction, and the transition portion is arranged at a certain angle to the driving plate.

5. A gravity energy storage power generation device based on a rail train according to claim 1, characterized in that: The flatbed transport vehicle includes a frame, a wheelset is installed at the bottom of the frame through a wheelset mounting seat, the frame is connected to the frame of an adjacent flatbed transport vehicle through a universal joint, the leaf spring is installed on one side of the frame through a connecting frame, and the wheels on both sides of the wheelset are respectively located between the leaf spring and the driving plate on the corresponding side.

6. A gravity energy storage power generation device based on a rail train according to claim 1, characterized in that: The transmission device is a gearbox, which is connected to the generator through a coupling. The gearbox includes an input shaft, an output shaft and a gear set, wherein the input shaft is connected to the friction wheel for receiving power from the friction wheel, the input shaft is connected to the output shaft through the gear set, and the output shaft is connected to the generator for transmitting power to the generator for generating electricity.

7. A gravity energy storage power generation device based on a rail train according to claim 6, characterized in that: At least one generator is provided, which is connected to the output shaft of the gear box through a coupling, and the generator is connected to the energy storage device.

8. The gravity energy storage power generation device based on a rail train according to claim 1, characterized in that: The power station also includes a box shell, which is arranged on the lower side of the parallel tracks and has an installation height lower than the ground surface. The generator and the transmission device are installed on the inner side of the box shell through a support base, and the friction wheel is arranged on the top of the support base.

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