Train track transportation system and gravitational energy storage system

Abstract

The application discloses a train track transportation system and a gravity energy storage system, which comprises a transportation train, a train track and a driving device. The transportation train comprises a head car and a tail car, and multiple carriages are flexibly connected. The train track comprises a turning track section, which is provided with an altitude difference and comprises an import section, a curved track section and an export section. At least two groups of driving devices are arranged along the turning track section. When the head car is driven by the first group of driving devices, at least a part of the transportation train is located in the import section. When the head car is driven by the second group of driving devices, at least a part of the transportation train is located in the curved track section, and at least a part of the transportation train is simultaneously driven by the first group of driving devices. When the tail car is driven by the second group of driving devices, at least a part of the transportation train is located in the export section. The train track transportation system can stably complete climbing / slope passing and turning, and can be adapted to the gravity energy storage system.

Description

TECHNICAL FIELD

[0001] The present application relates to a train track transportation system and a gravity energy storage system. BACKGROUND

[0002] As a mature, efficient and large-capacity material conveying method, track train transportation plays a crucial role in industrial logistics, mining, port transfer and other transportation scenarios. Its core advantage is that it can guide the train to run on a fixed track, realize continuous or batch material transportation in a long distance and predictable path, and significantly improve transportation efficiency and systematization level. The core principle of gravity energy storage is to transport heavy objects to a high storage area when there is excess electricity, converting electrical energy into gravitational potential energy storage; when electricity is needed, transport heavy objects to a low storage area, convert gravitational potential energy into electrical energy. The transportation subsystem of the gravity energy storage system includes the transportation subsystem of the track transportation system. Due to the advantages of track transportation system, the transportation subsystem of gravity energy storage can adopt this transportation form.

[0003] However, when the existing track train transportation system is applied to the field of gravity energy storage, the operating conditions of the field of gravity energy storage are different from the existing transportation conditions. The biggest difference is that the track of the field of gravity energy storage needs to adapt to the extension of the mountain and needs a larger altitude difference. Therefore, the train with heavy load required in the transportation process of the field of gravity energy storage needs to be able to smoothly complete the rotation and climbing, etc. The existing track transportation system cannot be directly adapted for use. Therefore, how to set up a train track transportation system that can smoothly run and adapt to the special working conditions of gravity energy storage needs to be solved. SUMMARY

[0004] The present application provides a train track transportation system to solve the technical problem that the existing track transportation system in the prior art cannot directly be applied to the gravity energy storage system because it cannot smoothly complete the slope turning.

[0005] A train track transportation system, comprising: a transportation train, a train track, and a driving device;

[0006] The transportation train comprises a plurality of carriages, at least including a head carriage and a tail carriage, and the plurality of carriages are flexibly connected.

[0007] The train track comprises a turning track section, which is provided with an altitude difference, and the turning track section is sequentially provided with an entry section, a curved track section and an exit section along the direction of the transportation train, at least part of the curved track section gradually increases / decreases in altitude, and the length of the transportation train is greater than or equal to the circumference of the curved track section.

[0008] The turning track section is provided with at least two groups of driving devices, the two groups of driving devices are arranged at intervals, and the transport train is driven by the first group of driving devices and the second group of driving devices in sequence along the direction of travel of the transport train. When the first group of driving devices drives the head car, at least a part of the transport train is located in the lead-in section. When the second group of driving devices drives the tail car, at least a part of the transport train is located in the curved track section, and at least a part of the transport train is simultaneously driven by the first group of driving devices. When the second group of driving devices drives the tail car, at least a part of the transport train is located in the lead-out section. The lead-in section and the lead-out section are arranged as straight sections. The first group of driving devices is arranged in the lead-in section. The second group of driving devices is arranged in the lead-out section. The first group of driving devices is arranged in the lead-in section. The second group of driving devices is arranged in the lead-out section. The lead-in section is provided with a third group of driving devices, and the distance between the third group of driving devices and the first group of driving devices is less than or equal to the length of the transport train. The lead-out section is provided with a fourth group of driving devices, and the distance between the fourth group of driving devices and the second group of driving devices is less than or equal to the length of the transport train.

[0009] Preferably, the lead-in section is provided with a third group of driving devices, and the lead-out section is provided with a fourth group of driving devices.

[0010] Preferably, the third group of driving devices has the same altitude as the first group of driving devices or gradually increases / decreases in altitude. The first group of driving devices gradually increases / decreases in altitude with the second group of driving devices. The second group of driving devices has the same altitude as the fourth group of driving devices or gradually increases / decreases in altitude.

[0011] Preferably, the third group of driving devices, the first group of driving devices, the second group of driving devices, and the fourth group of driving devices gradually increase / decrease in altitude along the direction of travel of the transport train.

[0012] Preferably, the first group of driving devices and the second group of driving devices are arranged outside the curved track section.

[0013] Preferably, the first group of driving devices, the second group of driving devices, the third group of driving devices, and the fourth group of driving devices are each provided with two driving wheels. The transport train is provided with a driven structure on both sides. The two driving wheels are in contact with the driven structure through a tensioning mechanism.

[0014] Preferably, the center line of the two driving wheels of the first group of driving devices and / or the third group of driving devices is perpendicular to the extension axis of the lead-in section. The center line of the two driving wheels of the second group of driving devices and / or the third group of driving devices is perpendicular to the extension axis of the lead-out section.

[0015] Preferably, the train track is arranged as a circular track.

[0016] Preferably, the introduction section and the export section are symmetrically arranged relative to an axis, which passes through the curved track section.

[0017] A gravity energy storage system comprises the train track transportation system.

[0018] The train track transportation system can smoothly complete climbing / descending and turning, and can be adapted to a gravity energy storage system. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0020] Figure 1 Fig. 1 is a schematic diagram of a track and a transportation train in an embodiment of the train track transportation system of the present application;

[0021] Figure 2 Fig. 2 is a schematic diagram of a structure of a transportation train in the train track transportation system of the present application;

[0022] Figure 3 Fig. 3 is a schematic diagram of a driving device structure in the train track transportation system of the present application;

[0023] Figure 4 Fig. 4 is a schematic diagram of an embodiment of the train track transportation system of the present application;

[0024] Figure 5 Fig. 5 is a schematic diagram of a first running state of an embodiment of the train track transportation system of the present application;

[0025] Figure 6 Fig. 6 is a schematic diagram of a second running state of an embodiment of the train track transportation system of the present application;

[0026] Figure 7 Fig. 7 is a schematic diagram of a third running state of an embodiment of the train track transportation system of the present application;

[0027] Figure 8 Fig. 8 is a schematic diagram of an embodiment of the train track transportation system of the present application. DETAILED DESCRIPTION

[0028] In order to make the above objectives, features and advantages of the present application more clear and understandable, the detailed description of the embodiments of the present application is made below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in many different ways from what is described herein, and with the same or similar results, and by one of ordinary skill in the art without departing from the scope of the present application, and therefore the present application is not limited to the details described below.

[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0030] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0031] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0034] The present invention provides a train track transportation system for use as a transportation system for the conversion of the potential energy of heavy objects in a gravity energy storage system. It is used to transport heavy objects from the lower / upper material yard to the upper / lower material yard. The train track transportation system of the present invention includes: a transport train 10, a train track 20, and a drive device 30.

[0035] Since the loading and unloading yards of gravity energy storage systems are mostly built along the mountainside, the layout of the train track 20 must adapt to the mountainous terrain and wind its way up the mountain. Figure 4 As shown, the train track 20 includes at least one turning section 21. The turning section 21 guides the transport train 10 to complete the adjustment of its direction / angle. The turning section 21 includes an inlet section 21a, a curved section 21b, and an outlet section 21c. The transport train 10 passes through the inlet section 21a, the curved section 21b, and the outlet section 21c sequentially along its direction of travel. The transport train 10 runs from the inlet section 21a to the curved section 21b, where the curved track of the curved section 21b adjusts the direction / angle of the transport train 10. After the adjustment is completed, the transport train 10 exits from the outlet section 21c. Due to the specific elevation difference between the upper and lower material yards, and the need for the train track 20 to guide the transport train 10 to run between the upper and lower material yards, as... Figure 1As shown, at least a part of the train track 20 is provided with an elevation difference, in one embodiment, in order to guide the transport train 10 to turn during the climbing and / or descending process, the turning track section 21 of the train track 20 is provided with an elevation difference, the forms of the turning track section 21 of the train track 20 provided with an elevation difference include multiple forms, any one or more of the entry section 21a, the curve section 21b, the exit section 21c can be considered as the turning track section 21 provided with an elevation difference, for example, in one embodiment, the curve section 21b of the turning track section 21 is provided with an elevation difference, that is, the transport train 10 realizes turning during the climbing / descending process, and the entry section 21a and / or the exit section 21c can be selectively provided with an elevation difference or provided as a horizontal section, in another embodiment, each of the entry section 21a, the curve section 21b, and the exit section 21c is provided with an elevation difference, and the forms of the elevation difference of each of the above-mentioned sections (the entry section 21a, the curve section 21b, and the exit section 21c) or the turning track section 21 can also include multiple forms, in one embodiment, one form of the elevation difference is that: along the direction of the transport train, the elevation of the track section gradually increases / decreases, that is, a certain track section (the entry section 21a / the curve section 21b / the exit section 21c or the entire turning track section 21) presents a continuous climbing / descending, in another embodiment, one form of the elevation difference is that: along the direction of the transport train, the elevation of the turning track section 21 fluctuates, that is, a certain track section is a descending section (or an ascending section) and / or a horizontal section in the overall trend of an ascending section (or a descending section), the structure form of the train track 20 can be set according to the actual terrain, for example, it can be set as a single track, a double track, or other forms, and the laying mode can be determined according to different tracks and different terrains, one laying mode can be that: a part of the track can be laid on the surface of the mountain and / or a part of the track can be laid on the support in an overhead manner, for example, it can be laid on the surface of the mountain after the land is leveled, the laying operation can refer to the existing track laying construction specification, for example, it can be laid on the sleeper, the support is for example a man-made metal support frame or a concrete support column, and multiple laying modes should be adjusted and combined according to the terrain, at least a part of the turning track section 21 (the entry section 21a, the curve section 21b, and the exit section 21c) can form a stable and continuous drop section (elevation difference) by means of the laying mode, for example, in one embodiment, the elevation of the curve section 21b continuously increases / decreases along the sequence of the transport train, in one embodiment, the train track 20 is provided with multiple turning track sections 21, so as to form a closed loop track.

[0036] The transport train 10 comprises a plurality of carriages 11, at least including a head carriage 11a and a tail carriage 11b, and the plurality of carriages 11 are flexibly connected, each of the carriages 11 is provided with at least one / multiple wheels for guiding the transport train 10 to run on the train track 20, and the carriage 11 is provided to be loadable with energy storage medium, which can be liquid, bulk material or solid, etc., and the transport train 10 can be provided according to the form of the energy storage medium, for example, can be flat or carriage type, in an embodiment of the present application, the carriage 11 is provided with a discharge port (top opening or bottom opening or side opening), and the orientation of the discharge port of the carriage 11 remains unchanged at any moment when the transport train 10 runs on the train track 20 (in any one or more of the entry section 21a, the curved track section 21b and the exit section 21c), in an embodiment, the transport train 10 sequentially passes through the entry section 21a, the curved track section 21b and the exit section 21c, and the orientation of the discharge port of the carriage 11 is the same when the transport train 10 passes through the three sections, and the amount of energy storage medium loaded in the carriage 11 can also be adjusted between empty and full according to the demand of the energy storage system, when the energy storage medium is solid, at least part of the plurality of energy storage medium can be stacked in the carriage 11, the plurality of carriages 11 are flexibly connected, the flexible connection of the present application is not limited to a specific connection structure, and the flexible connection structure can adopt a conventional train connection structure in the art, for example, a classic "Jan coupler" connection or a universal joint connection or a flexible rope connection, as long as the two adjacent carriages can realize deflection / oscillation in the horizontal and / or vertical directions after being connected, which is the flexible connection of the present application, the flexible connection can make the transport train 10 better adapt to different terrains to realize turning and / or climbing, in an embodiment of the present application, the two adjacent carriages 11 can be connected through a universal joint, or can be connected through a connecting piece with a first hinge 13a and / or a second hinge 13b, so that the two adjacent carriages 11 can have a certain space in the vertical direction Z and / or the horizontal direction Y, it should be noted that the flexible connection of the plurality of carriages 11 in the present application is not limited to the embodiment that each of the plurality of carriages 11 is flexibly connected, but also includes the embodiment that only one group of two adjacent carriages 11 is flexibly connected or part of the adjacent carriages 11 is flexibly connected, according to the driving cooperation of the transport train 10 and the driving device 30, in an embodiment, the transport train 10 is provided with a driven structure 11c which can be driven by the driving device 30, the driven structure 11c can be provided as a driving plate or a driving engagement / connection piece, which can be integrally formed with the carriage 11 or can be a separate part provided on the carriage 11, and the provision on the carriage 11 can adopt fixed connection or detachable connection for easy maintenance.

[0037] The driving device 30 is arranged to drive the transport train 10 to run on the train track 20. In the present application, the driving device 30 uses a motor as a power source to drive the transport train 10 to run to the high-level stockyard, thereby converting electrical energy into gravitational potential energy of the transport train 10 and / or energy storage medium. The arrangement of the driving device 30 relative to the transport train 10 and the train track 20 can be various according to the terrain. Considering that the train track 20 is arranged along the mountain body and has an altitude difference, in order to drive reliably and stably, in an embodiment, the driving device 30 is arranged outside the transport train 10, which is in contact / connected with the transport train 10 through a power transmission structure to drive the transport train 10 to move relative to the train track 20. The driving device 30 can be selected from the train driving devices known to those skilled in the art in the prior art. The core of the selection of the driving device 30 in the present application is the layout of the driving device 30 relative to the train / or track, so that the transport train 10 can stably climb and turn on the train track 20. The driving mode of the driving device 30 and the transport train 10 and the power transmission structure of the driving device 30 itself, i.e., the power transmission structure of the power source (motor), are not specifically limited, which can adopt the existing schemes in the prior art, such as Figure 3 In an embodiment of the present application, the driving device 30 and the transport train 10 can select a driving wheel type driving mode, i.e., the driving device 30 is provided with two driving wheels 30a (for example, A1, A2 / B1, B2), and the two driving wheels 30a keep contact with the driven structures 11c (driving plates) on both sides of the transport train 10 through a tensioning mechanism 30b to realize friction driving. The intermediate transmission structure of the driving wheels 30a receiving the motor power can be arranged according to different working conditions, for example, the driving device structure in the prior application CN 202320067168.9 of the applicant can be referred to. In the driving wheel type driving mode, the two driving wheels 30a can be arranged inside the train track 20 / transport train 10 (built-in type) as in CN 202320067168.9. In other embodiments, the two driving wheels 30a can also be arranged outside the train track 20 / transport train 10 (external type). In an embodiment, the train track 20 at least includes two support rails (inner support rail / outer support rail) supporting the wheels, and the two driving wheels of the driving device are arranged outside the two support rails or inside the two support rails to drive the driving plates / driving structures arranged on both sides of the carriage of the transport train. In an embodiment, the center points (01, 02) of the two driving wheels 30a of the same driving device are connected by a line L1, which can be perpendicular to the axis L2 / L10 / L11 / L12 of the train track 20. The driving wheels can adopt rubber wheels or metal wheels or other composite material wheels. In an embodiment, the tensioning mechanism 30b can adopt existing tensioning structures / components such as hydraulic tensioning, electric tensioning, elastic element tensioning, or mechanical tensioning. In an embodiment, the tensioning mechanism 30b and the driving wheel 30a can be arranged on the same mounting bracket 30c.

[0038] The driving device 30 is arranged in the track energy storage system of the present application to drive the transport train 10 to run on the train track 20, especially to smoothly pass the transition section 21 to realize smooth turning in the process of climbing / descending. Figures 4-7 As shown, the driving device 30 is arranged as a driving wheel type driving device, which is arranged outside the transport train 10 to reduce the weight of the transport train and facilitate climbing. The driving device 30 drives the transport train 10 to pass the curved track section 21b in the advancing direction. The curved track section 21 is provided with at least two groups of driving devices (the first group of driving devices 31 and the second group of driving devices 32). The two groups of driving devices are arranged at intervals. The transport train 10 is driven by the first group of driving devices 31 and the second group of driving devices 32 in sequence in the advancing direction. When the head carriage 11a is driven by the first group of driving devices 31, at least a part of the transport train 10 is located in the lead-in section 21a. When the head carriage 11a is driven by the second group of driving devices 32, at least a part of the transport train 10 is located in the curved track section 21b, and at least a part of the transport train 10 is simultaneously driven by the first group of driving devices 31. When the tail carriage 11b is driven by the second group of driving devices 32, at least a part of the transport train 10 is located in the lead-out section 21c. The distributed arrangement of the plurality of driving devices 30 can better adapt to the mountainous terrain. When the transport train 10 passes the curved track section 21b, the driving force is always maintained in the process of entering the curve, passing the curve, and exiting the curve, and the driving force is continuous and sufficient. Especially when the transport train 10 is located in the curved track section 21b, the transport train 10 can be driven by the two groups of driving devices at the same time at a certain time, so that the transport train 10 can smoothly pass the curve and ensure that the transport train 10 can smoothly turn during climbing / descending. In one embodiment, the length of the transport train 10 is greater than or equal to the circumference of the curved track section 21b. In this way, the transport train 10 can cover the entire curved track section 21b at a certain time, and the track guiding curve is more stable and less likely to derail. Figure 6 As shown, in one embodiment of the present application, when the head carriage 11a is driven by the second group of driving devices 32, the tail carriage 11b is simultaneously driven by the first group of driving devices 31. This arrangement can meet the requirement of simultaneous driving for smooth curve passing and can maximize the reduction of the number of driving devices to save costs. By arranging the first group and the second group of driving devices at intervals in the curved track section 21 and limiting the driving mode of the transport train 10 when passing the curved track section 21b (when the head carriage 11a is driven by the second group of driving devices 32, at least a part of the transport train 10 is located in the curved track section 21b, and at least a part of the transport train 10 is simultaneously driven by the first group of driving devices 31), the present application ensures that the train has a "front pulling and rear sending" driving mode when passing the curved track section 21b, which constitutes a dynamic driving escort mechanism. This avoids the risk of stalling, rolling back, or overturning of the train due to power interruption or derailment in the area of the slope curve, and ensures the continuity and stability of the operation.

[0039] As Figure 1 , 4,8, in an embodiment of the present application, the introduction section 21a and the export section 21c are provided as straight sections, and the introduction section 21a and the export section 21c are also provided with the third set of driving devices 33 and / or the fourth set of driving devices 34, the spacing between the third set of driving devices 33 and the first set of driving devices 31 is less than or equal to the length of the transport train 10, the spacing between the fourth set of driving devices 34 and the second set of driving devices 32 is less than or equal to the length of the transport train 10, the first set of driving devices 31 is arranged on the introduction section 21a, and the second set of driving devices 32 is arranged on the export section 21c, in an embodiment, the introduction section 21a and the export section 21c are provided as straight sections, and the third set of driving devices 33 is arranged on the introduction section 21a, and the fourth set of driving devices 34 is arranged on the export section 21c, in this arrangement, the overall bending mode includes: a straight-bend-straight three-section track structure (straight introduction section, curved section, straight export section), four sets of driving devices are specifically arranged (four sets of driving devices are arranged at intervals, the third set of driving devices and the first set of driving devices are arranged on the introduction section, and the second set of driving devices and the fourth set of driving devices are arranged on the export section), train specific parameters and driving state (the length of the train is greater than the spacing between the third set of driving devices and the first set of driving devices, the length of the train is greater than the circumference of the curved section, the length of the train is greater than the spacing between the second set of driving devices and the fourth set of driving devices, and when the train head car is driven by the second set of driving devices, at least a part of the transport train is simultaneously driven by the first set of driving devices), wherein the straight-bend-straight three-section track structure, before the train head car of the transport train enters the curve, the driving devices of the introduction section drive it to run straight, so that it can smoothly enter the curved section, and when the train head car of the transport train starts to exit the curve, the driving devices of the export section drive the transport train to run straight on the export section, so that it smoothly exits the curved section, the four sets of driving devices are specifically arranged (four sets of driving devices are arranged at intervals, the third set of driving devices and the first set of driving devices are arranged on the introduction section, and the second set of driving devices and the fourth set of driving devices are arranged on the export section), the first set of driving devices and the third set of driving devices are arranged on the straight introduction section, the second set of driving devices and the fourth set of driving devices are arranged on the straight export section, all the driving devices are concentrated on the straight section, and the curved section is not provided with driving force, which avoids the risk of serious track wear and derailment caused by driving in the curved section where the mechanical stability is the worst (the driving devices driving the transport train in the curved section will generate a lateral force that does not match the direction of the track curve, which may cause wheel biting, climbing and even derailment), so that the driving process is efficiently completed in the straight section with the best mechanical properties, and when passing through the curved section, through the length of the transport train and the driving mode of the first set of driving devices and the second set of driving devices, a "front pull and rear push" power escort driving state is formed, the driving and guiding of the curved section are separated and arranged to realize the decoupling of the driving and guiding of the curved section, and the curved section only purely guides, thereby realizing safer and more stable bending, and the heavy-load train ramp bending process is successfully transformed into a safe, stable and controllable process.In the specific arrangement of the four groups of driving devices, in one embodiment of the present application, the altitude of the third group of driving devices is equal to or gradually increases / decreases with the altitude of the first group of driving devices, the altitude of the first group of driving devices gradually increases / decreases with the altitude of the second group of driving devices, and the altitude of the second group of driving devices is equal to or gradually increases / decreases with the altitude of the fourth group of driving devices. This layout optimizes the arrangement relationship between adjacent driving devices, matches the terrain, ensures the smoothness of power transmission, avoids additional load or speed fluctuation caused by sudden height changes, and improves driving efficiency and stability. In another embodiment of the present application, the altitude of the third group of driving devices, the first group of driving devices, the second group of driving devices, and the fourth group of driving devices gradually increases / decreases along the direction of travel of the transport train. This layout forms a continuous climbing / descending power chain, realizes optimal distribution and relay of traction force, and provides continuous, stable, and coordinated driving force for the train to ensure smooth operation. In one embodiment of the present application, the first group of driving devices and the second group of driving devices are arranged outside the curved track section. This arrangement clearly defines the core principle of avoiding the curved track section, fundamentally eliminates the risk of lateral force, skidding, rail biting, and derailment caused by driving in the curve, and greatly enhances the safety of the system when passing through the curve. It should be noted that in the present application, the first group of driving devices 31 is arranged in the lead-in section 21a, and the second group of driving devices 32 is arranged in the lead-out section 21c, which includes various forms, such as the first group of driving devices 31 being completely arranged in the lead-in section 21a and the second group of driving devices 32 being completely arranged in the lead-out section 21c, or the first group of driving devices 31 being arranged at the junction of the lead-in section 21a and the curved track section 21b and the second group of driving devices 32 being arranged at the junction of the curved track section 21b and the lead-out section 21c, i.e., the first group of driving devices 31 simultaneously spans the lead-in section 21a and the curved track section 21b, and the second group of driving devices 32 simultaneously spans the curved track section 21b and the lead-out section 21c. As long as at least a part of the second group of driving devices 32 is arranged in the lead-in section 21a and at least a part of the second group of driving devices 32 is arranged in the lead-out section 21c, it is the first group of driving devices 31 arranged in the lead-in section 21a and the second group of driving devices 32 arranged in the lead-out section 21c referred to in the present application. In one embodiment of the present application, the lead-in section 21a and the lead-out section 21c can be symmetrically arranged relative to an axis V passing through the curved track section 21b. This arrangement is beneficial to the balance and symmetry of the stress state of the train when entering and exiting the curve, ensures smooth and smooth passing through the curve, and can simplify the design and arrangement of the track and driving devices, reducing the engineering complexity.

[0040] In summary, the train track transportation system of the present application can ensure that the transport train smoothly completes climbing / descending and passing through the curve through the specific driving curve arrangement of the driving devices and the transport train / train track, thereby being suitable for the gravity energy storage system.

[0041] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, it is to be understood that the application embraces all such possible combinations.

[0042] The above-described embodiments only express several implementation manners of the application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be pointed out that for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the concept of the application, and these all belong to the protection scope of the application. Therefore, the protection scope of the application should be subject to the appended claims.

Claims

1. A train track transportation system, characterized in that, The application relates to a train track transportation system, which comprises a transportation train, a train track and driving devices. The transportation train comprises a plurality of carriages, at least a head carriage and a tail carriage, and the plurality of carriages are flexibly connected. The train track comprises a turning track section, which is provided with an altitude difference, and the turning track section is sequentially provided with an entry section, a curved track section and an exit section along the running direction of the transportation train, at least part of the curved track section gradually increases or decreases in altitude, and the length of the transportation train is greater than or equal to the circumference of the curved track section. The turning track section is provided with at least two groups of driving devices, the two groups of driving devices are arranged at intervals, the transportation train is driven by the first group of driving devices and the second group of driving devices in sequence along the running direction of the transportation train, at least part of the transportation train is located in the entry section when the head carriage is driven by the first group of driving devices, at least part of the transportation train is located in the curved track section and at least part of the transportation train is simultaneously driven by the first group of driving devices when the head carriage is driven by the second group of driving devices, and at least part of the transportation train is located in the exit section when the tail carriage is driven by the second group of driving devices, the entry section and the exit section are provided as straight sections, the first group of driving devices is arranged in the entry section, and the second group of driving devices is arranged in the exit section; the entry section is provided with a third group of driving devices, and the interval between the first group of driving devices and the third group of driving devices is less than or equal to the length of the transportation train, or the exit section is provided with a fourth group of driving devices, and the interval between the second group of driving devices and the fourth group of driving devices is less than or equal to the length of the transportation train, The first group of driving devices, the second group of driving devices, the third group of driving devices and the fourth group of driving devices are all provided with two driving wheels, and the two driving wheels are kept in contact with the driven structures arranged on both sides of the transportation train through a tensioning mechanism. The entry section is provided with the third group of driving devices, and the exit section is provided with the fourth group of driving devices.

2. A train track transportation system according to claim 1, characterized in that The altitude of the third group of driving devices is equal to or gradually increases or decreases with the first group of driving devices, the altitude of the first group of driving devices gradually increases or decreases with the second group of driving devices, and the altitude of the second group of driving devices is equal to or gradually increases or decreases with the fourth group of driving devices.

3. A train track transportation system according to claim 2, characterized in that The altitude of the third group of driving devices, the first group of driving devices, the second group of driving devices and the fourth group of driving devices gradually increases or decreases along the running direction of the transportation train.

4. A train track transportation system according to claim 2, characterized in that The first group of driving devices and the second group of driving devices are arranged outside the curved track section.

5. A train track transportation system according to claim 2, characterized in that The center line of the two driving wheels of the first group of driving devices and / or the third group of driving devices is perpendicular to the extension axis of the entry section, and the center line of the two driving wheels of the second group of driving devices and / or the third group of driving devices is perpendicular to the extension axis of the exit section.

6. A train track transportation system according to claim 2, characterized in that The train track is arranged as a ring track.

7. A train track transportation system according to claim 1, characterized in that The entry section and the exit section can be symmetrically arranged relative to an axis, and the axis passes through the curved track section.

8. A rail-bound vehicle system according to any one of claims 1-7, characterized in that The application further relates to a train track transportation system as claimed in any one of claims 1-8.

9. A gravitational energy storage system characterized by, ​

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