Bearing rail type bulk cargo conveying gravity flow energy storage system

Abstract

The utility model relates to a bearing rail type bulk material conveying gravity flow energy storage system which comprises a double-circulation bearing mechanism, a double-circulation traction mechanism, a double-wheel driving mechanism, a carrying mechanism and a bulk material conveying mechanism. The bulk material conveying mechanism comprises a closed surrounding conveying belt and is used for carrying energy storage bulk materials serving as energy storage carriers. A plurality of carrying mechanisms which can operate synchronously with the two traction cables are connected between the two traction cables, and the carrying mechanisms can operate along the double-circulation bearing mechanism in a closed-loop mode; the carrying mechanism is connected with the conveying belt so that the carrying mechanism can drive the conveying belt to continuously operate under the traction driving of the traction cable and the bearing supporting of the double-circulation bearing mechanism. The bulk energy storage body can be used for providing continuous gravity flow so as to achieve continuous energy flow, and the problems that existing gravity energy storage is intermittent, site selection is difficult, and investment is large are solved.

Description

Technical Field

[0001] The present application relates to the field of gravity energy storage, and in particular to a load-bearing rail-type bulk material conveying gravity flow energy storage system. Background Art

[0002] In recent years, my country's electricity demand has maintained a steady growth trend, and the proportion of new power generation technologies such as wind and photovoltaic power in energy utilization has gradually increased. However, renewable energy sources, mainly wind and photovoltaic power, are characterized by randomness, volatility, and intermittency, and cannot fully meet society's electricity demand. Therefore, energy storage systems are necessary to balance power generation and consumption.

[0003] Energy storage systems, as a means of regulating electricity supply and demand, are a key support and essential requirement for the development of new energy. Gravity energy storage, with its advantages of long storage time, no attenuation, long life, high safety, and low maintenance costs, is particularly suitable for large-scale grid energy storage and medium- and long-term energy storage scenarios. This is especially true in areas with abundant wind and solar resources but unstable power output. It can effectively regulate power loads, achieve energy balance and transfer, and enhance renewable energy absorption capacity.

[0004] Furthermore, some gravity energy storage technologies can be deployed in a distributed manner, integrating with existing infrastructure such as abandoned mines, barren hills and slopes, and high-rise buildings, thus aligning with the development trend of land and energy conservation. However, because gravity energy storage systems rely on the lifting and lowering of heavy objects to convert potential energy, most suffer from intermittent charging and discharging.

[0005] Therefore, the application of bulk material transport mechanisms to gravity energy storage has led to the development of bulk material conveying gravity energy storage systems that achieve continuous charging and discharging. However, existing bulk material conveying gravity energy storage systems use belt traction to transport bulk materials. This creates compression resistance between the belt and rollers, and extrusion resistance as the material on the belt passes over the rollers. This results in excessive operating resistance and low transport efficiency. Furthermore, the belt is subject to significant tensile stress in the direction of travel, making it prone to longitudinal tearing and breakage, making it difficult to engineer within the efficiency requirements of gravity energy storage. Utility Model Content

[0006] The purpose of this application is to provide a load-bearing track type bulk material conveying gravity flow energy storage system, which can solve the existing technical problems of the above-mentioned gravity energy storage system.

[0007] In order to achieve the above-mentioned object, the utility model provides a load-bearing track type bulk material conveying gravity flow energy storage system, comprising a double-circulation load-bearing mechanism, a double-circulation traction mechanism, a double-wheel drive mechanism, a carrying mechanism and a bulk material conveying mechanism;

[0008] The dual-circulation carrying mechanism includes two parallel upward-inclined closed-circuit carrying rails; the dual-circulation traction mechanism includes two parallel upward-inclined closed-circuit traction cables; the dual-wheel drive mechanism includes two parallel vertically mounted drive wheels; at least a portion of the traction cables is looped around the drive wheels and is driven by the drive wheels to continuously run;

[0009] The bulk material conveying mechanism includes a closed and looped conveying belt for carrying energy storage bulk material as an energy storage carrier;

[0010] A plurality of carrying mechanisms that can run synchronously with the two traction ropes are connected between the two traction ropes, and the carrying mechanisms can run in a closed loop along the carrying track;

[0011] The carrying mechanism is connected to the conveyor belt so that the carrying mechanism can drive the conveyor belt to run continuously under the traction of the traction rope and the support of the carrying rail;

[0012] The driving wheel is connected to an electric power generation mechanism;

[0013] The electric generator mechanism is used to drive the driving wheel to actively rotate, forming a continuous gravity flow through the continuously lifted energy storage bulk material;

[0014] Furthermore, the driving wheel is driven to rotate by the continuously descending energy storage bulk material, so as to convert the gravitational potential energy into the electrical energy of the electric generator mechanism to form a continuous energy flow.

[0015] In an optional embodiment, each of the transport mechanisms includes a transport frame connected between the conveyor belt and the traction rope, and the transport frame includes a rope connecting frame located on both sides of the travel direction, and rope fixing devices are provided at both ends of the rope connecting frame. The rope fixing devices are rotatably pivoted at both ends of the rope connecting frame through a slewing bearing, and the rope fixing devices are fixedly connected to the traction rope.

[0016] In an optional embodiment, the transport rack further comprises a plurality of rack strips arranged side by side between the rope connecting frames, and the plurality of rack strips are connected by an assembling mechanism located below the plurality of rack strips;

[0017] The plurality of rack strips are arranged at intervals along the travel direction of the transport mechanism, and the rack strips located on both sides of the travel direction are connected with running wheels, and the running wheels can roll along the carrying track;

[0018] Both ends of the rack strip are connected to wheel set fixing frames, the inner ring of the running wheel is installed on the wheel set fixing frame through the wheel axle, and the outer ring of the running wheel rolls on the load-bearing track.

[0019] In an optional embodiment, the carrying track includes a closed surrounding structure, and the traction rope is arranged on the inner side of the carrying track;

[0020] The walking wheels and the rope fixing device are respectively arranged on the upper and lower sides of the carrying frame, and pressure plates are connected to both ends of each frame strip. The edge of the conveyor belt is clamped between the pressure plate and the frame strip, and the pressure plate is fastened to the frame strip by bolts.

[0021] In an optional embodiment, a clamping block is provided between adjacent rack strips, and the width of the clamping block is the same as the gap between the rack strips;

[0022] The clamping block and the rack strip are connected to form an integral structure through the assembling mechanism, and the assembling mechanism includes a guide chain arranged below the rack strip;

[0023] The guide chain includes a plurality of chain links that are hingedly connected inwardly and outwardly staggered, each of the chain links being respectively arranged corresponding to the clamping block and the rack strip, and being connected to the bottom of the clamping block and the rack strip through a fixing plate.

[0024] In an optional embodiment, the dual-wheel drive mechanism includes a horizontally arranged transmission shaft, the two drive wheels are vertically connected to the transmission shaft and are spaced apart relative to the axial direction of the transmission shaft, or the two drive wheels are independently driven and arranged in mirror-symmetrical fashion.

[0025] The two traction ropes are respectively wrapped around corresponding driving wheels, so as to enable the driving wheels to drive the traction ropes to run through the friction force of the wrapping contact;

[0026] The end of the transmission shaft is connected to the electric generator mechanism, the electric generator mechanism includes an electric generator, the electric generator includes an output shaft, and the output shaft is connected to the transmission shaft through a coupling;

[0027] The two traction ropes respectively include a single closed-loop annular traction rope, and a section of the annular traction rope is looped around the driving wheel.

[0028] In an optional embodiment, the dual-wheel drive mechanism is provided on top of the energy storage system;

[0029] A detour wheel group is provided at the bottom of the energy storage system, and the detour wheel group includes two vertically mounted steering wheels arranged in parallel, the steering wheels having the same structure as the driving wheels, and the wheel surfaces of the steering wheels and the driving wheels are arranged on the same plane;

[0030] Each of the traction cables is enclosed and looped between the corresponding driving wheels and the steering wheels, and the driving wheels and the steering wheels are respectively provided with wheel grooves, and the traction cables are compressed and looped in the wheel grooves;

[0031] Alternatively, the dual-wheel drive mechanism is arranged at the bottom of the energy storage system, and the roundabout wheel set is arranged at the top of the energy storage system;

[0032] Alternatively, the dual-wheel drive mechanism is provided at both the top and the bottom of the energy storage system.

[0033] In an optional embodiment, guide sprockets are provided in pairs between the driving wheels and between the steering wheels, respectively. The guide sprockets are coaxially connected to the driving wheels or the steering wheels and meshingly connected to the assembling mechanism.

[0034] In an optional embodiment, the two bearing rails include U-shaped channel steels with opening directions facing each other, and the running wheels are accommodated in the U-shaped channel steels and can roll along the U-shaped channel steels;

[0035] The bearing track includes an upper branch track and a lower branch track, and the upper branch track includes an upward arc-shaped turning section, an upward bottom horizontal section, an upward inclined section, and an upward top horizontal section;

[0036] The lower branch track includes a downward arc-shaped turning section, a downward top guide section, a downward inclined section, and a downward bottom guide section. The upward arc-shaped turning section is arranged on the periphery of the steering wheel, the downward arc-shaped turning section is arranged on the periphery of the driving wheel, and the downward top guide section bends and extends toward the upper branch track.

[0037] The different sections corresponding to the traction rope and the carrying rail are located on the same plane, forming a surrounding plane of the traction rope.

[0038] In an optional embodiment, the system further comprises a storage yard for storing the energy storage bulk material, wherein the storage yard is arranged at the top and bottom of the energy storage system, and the energy storage bulk material is transported back and forth between the storage yard and the bulk material conveying mechanism by a transfer device;

[0039] The load-bearing track type bulk material conveying gravity flow energy storage system includes multiple sets, and the multiple sets of the load-bearing track type bulk material conveying gravity flow energy storage system are arranged in multiple rows in parallel and / or stacked up and down on the hillside terrain.

[0040] The load-bearing rail-type bulk material conveying gravity flow energy storage system in this application can use bulk energy storage bodies to provide continuous gravity flow and thus realize continuous energy flow, solving the problems of existing gravity energy storage such as intermittent, difficult site selection, and large investment.

[0041] By applying the principles of bulk material transport to gravity energy storage, continuous energy storage and discharge can be achieved. Using a traction rope as the main traction mechanism, compared to conventional belt traction, the bulk material conveyor mechanism can only load the bulk material without experiencing tensile stress along the travel direction. This reduces the demand for belt performance, allows the use of more economical, universal standard belts, and significantly increases service life. Furthermore, the absence of belts bearing traction tensile stress also prevents failures such as longitudinal tearing and belt breakage, ensuring the continuous stability of gravity flow.

[0042] Traditional belt conveyors use rollers to support the upper and lower branch belts. When the traction belt is in operation, it drives the rollers to rotate. In this utility model, the conveyor belt is supported by a carrying mechanism, and the traction rope is used to synchronously pull the carrying mechanism. This avoids the indentation resistance between the traditional belt and rollers, as well as the extrusion resistance of the material on the belt passing through the rollers. This can significantly reduce operating resistance and improve conveying efficiency.

[0043] By replacing the rollers with the carrying mechanism and connecting the carrying mechanism and the conveyor belt as a whole, the carrying mechanism and the conveyor belt can run continuously under the traction of the traction rope. Combined with the carrying mechanism, it can run in a closed loop along the load-bearing track, which can reduce the running resistance to the greatest extent. The rolling resistance of the walking wheel during rolling operation is much smaller than the rolling resistance of the roller, which can reduce the invalid power consumption during the traction process and ensure the energy storage efficiency.

[0044] Through the mutual cooperation of the carrying mechanism, the traction mechanism and the driving mechanism, the continuous and steady-state traction operation of the carrying mechanism and the bulk material conveying mechanism can be formed during the operation of the driving mechanism. Combined with the transportation of energy storage bulk material by the bulk material conveying mechanism, stable and continuous gravity flow and energy flow can be obtained in the energy storage stage and the discharge stage. Under the premise of improving the carrying capacity, the high-efficiency operation of the energy storage and power generation states is guaranteed, and high-power storage / discharge of electric energy can be realized.

[0045] By decoupling the load-bearing and traction relationship formed by the load-bearing track and the traction rope, compared with the common gravity flow energy storage system, the system has a stronger load-bearing capacity and a more balanced load, making the process of forming continuous gravity flow and energy flow more stable and reliable.

[0046] The parallel arrangement of the driving wheels can reduce space occupation, facilitate the formation of driving traction surfaces corresponding to the two traction ropes, and ensure the stable and reliable continuous circulation of the traction ropes.

[0047] By cooperating with each other, a four-in-one composite transmission system is constructed, which improves safety and stability to the greatest extent compared with the traditional single belt traction.

[0048] The load-bearing track-type bulk material conveying gravity flow energy storage method in the present invention can form a continuous steady-state gravity flow and energy flow. By adjusting the travel speed of the conveyor belt to follow the carrying mechanism and adjusting the carrying capacity of the energy storage bulk material, the real-time power consumption or power generation can be arbitrarily adjusted, thereby realizing the "slow charging and fast discharging" or "charging and discharging on demand" function.

[0049] By combining multiple sets of load-bearing rail-type bulk material conveying gravity flow energy storage systems and implementing parallel multi-assembly and / or up-and-down stacking arrangements according to the hillside terrain, larger-scale energy storage can be achieved.

[0050] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0052] Figure 1 This is a schematic structural diagram of the load-bearing rail-type bulk material conveying gravity flow energy storage system in this application;

[0053] Figure 2 This is a schematic diagram of the structure of the transport mechanism in this application;

[0054] Figure 3 for Figure 2 Schematic diagram of the top structure;

[0055] Figure 4 It is a structural diagram of the driving structure;

[0056] Figure 5 Schematic diagram of the structure of the rope fixing device.

[0057] icon:

[0058] 1-carrying mechanism;

[0059] 10-carrying track; 10a-upper branch track; 10a1-upward curved turning section; 10a2-upward bottom horizontal section; 10a3-upward inclined section; 10a4-upward top horizontal section;

[0060] 10b-lower branch track; 10b1-downward curved turning section; 10b2-downward top guide section; 10b3-downward inclined section; 10b4-downward bottom guide section;

[0061] 2-traction rope;

[0062] 21-upward traction rope; 211-steering wheel section; 212-lower horizontal section; 213-upper inclined section; 214-upper horizontal section;

[0063] 22-downward traction rope; 221-driving wheel section; 222-upper arc-shaped redirection section; 223-lower inclined section; 224-lower arc-shaped redirection section;

[0064] 23-traction rope guide device;

[0065] 3- driving wheel; 31- transmission shaft; 32- steering wheel; 33- wheel groove; 34- guide sprocket;

[0066] 4-Carrying mechanism; 4a-Carrying rack; 41-Rope connecting frame; 42-Rack strip; 43-Assembly mechanism; 44-Traveling wheel; 45-Wheel assembly fixing frame; 46-Pressing plate; 47-Fixed plate; 40a-Clamping block; 40b-Guide chain; 40c-Chain link;

[0067] 5-Electric generating mechanism;

[0068] 6- driving support;

[0069] 7-rope fixing device; 71-slewing bearing; 72-jaw;

[0070] 8- conveyor belt; 8a- corrugated sidewall belt; 81- base belt; 82- corrugated sidewall; 83- cross partition. DETAILED DESCRIPTION

[0071] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0072] In the description of this application, it should be noted that the terms "inner" and "outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended solely to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0073] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0074] The load-bearing rail-type bulk material conveying gravity flow energy storage system in this application is mainly used in the field of gravity energy storage. By optimizing the structure and energy storage method of the existing gravity energy storage system, it is used to form a continuous and stable gravity flow and energy flow. At the same time, it can avoid the disadvantages of traditional traction belts in the application of gravity energy storage and reduce the performance requirements of conveyor belts.

[0075] See also Figure 1 The main structure of the load-bearing rail-type bulk material conveying gravity flow energy storage system in the present invention includes a double-circulation load-bearing mechanism 1, a double-circulation traction mechanism, a two-wheel drive mechanism, a carrying mechanism 4 and a bulk material conveying mechanism.

[0076] The bulk material conveying mechanism includes a closed, looping conveyor belt 8, which is connected to and traction-enhanced by a dual-loop traction mechanism via a carrier mechanism 4. The conveyor belt 8 is primarily used to transport the energy storage bulk material, which serves as the energy storage carrier. The lifting and lowering of the energy storage bulk material create a continuous gravity flow for energy storage and a continuous energy flow for energy discharge, respectively.

[0077] By lifting, transporting and transferring the energy storage bulk material by the continuously traction conveyor belt 8, a steady-state continuous gravity flow can be formed in the energy storage stage, and a steady-state continuous energy flow can be formed by releasing and converting the gravity flow in the discharge stage.

[0078] The double-circulation bearing mechanism 1 is mainly used to bear the conveyor belt 8, providing an effective bearing effect, capable of supporting and bearing the carrying mechanism 4, gravity energy storage bulk materials and the conveyor belt 8, and improving the safety margin of the system operation.

[0079] The double-circulation bearing mechanism 1 includes two parallel upward-inclined closed-circuit bearing rails 10, which are more suitable for arrangement on hillside terrain. The bearing rails 10 are supported by brackets at different heights.

[0080] From the perspective of continuous traction, the dual-loop traction mechanism in the present invention includes two parallel, upward-inclined, closed, and looped traction ropes 2, and the dual-wheel drive mechanism includes two parallel drive wheels 3. At least a portion of the traction rope 2 is looped around the drive wheel 3 and runs continuously under the drive of the drive wheel 3.

[0081] Two parallel upward-inclined closed-loop traction ropes 2 can be driven by two parallel vertically installed driving wheels 3 to continuously and dynamically operate, forming an operating structure for providing a traction effect. Combined with the carrying mechanism 4 that can run along the carrying track 10, and the connection and traction relationship between the conveyor belt 8 and the traction rope 2 established by the carrying mechanism 4, a continuous traction operation state of the conveyor belt 8 can be formed under the dual action of the carrying mechanism 1 and the traction mechanism.

[0082] The traction force is connected between the conveyor belt 8 and the traction rope 2 through the carrying mechanism 4, thereby reducing the direct traction tension on the belt and the performance requirements of the conveyor belt 8. At the same time, the conveyor belt 8 can follow the carrying mechanism 4 and operate continuously and steadily under the traction action of the traction mechanism and the bearing support of the carrying mechanism 1, ensuring the stability and reliability of the gravity flow and energy flow.

[0083] The closed and looped conveyor belt 8 can continuously operate in a closed loop to maintain a continuous transportation state for the energy storage bulk material. At the same time, multiple carrying mechanisms 4 are connected between the two traction ropes 2 and can run synchronously with the traction ropes 2 under the traction of the traction ropes 2. Furthermore, by connecting the multiple carrying mechanisms 4 to the conveyor belt 8 respectively, the traction force of the multiple carrying mechanisms 4 to the conveyor belt 8 can be dispersed, thereby reducing the concentration of local traction stress.

[0084] From the perspective of load-bearing, the carrying mechanism 4 can run in a closed loop along the carrying track 10 of the double-circulation carrying mechanism 1. The set carrying track 10 can support the conveyor belt 8 and the energy storage bulk materials it carries, ensuring the stability and efficiency of the conveyor belt 8 during continuous operation.

[0085] The carrying mechanism 4 in this application is connected to the conveyor belt 8, which enables the carrying mechanism 4 to drive the conveyor belt 8 to run continuously under the traction of the traction rope 2 and the support of the double-loop carrying mechanism 1, thereby avoiding the direct traction force borne by the existing traditional traction belt.

[0086] The mutual cooperation between the carrying mechanism 1 and the traction mechanism can form a separate setting form of carrying and traction. When the conveyor belt 8 is carrying, the carrying mechanism 1 is used to bear the weight of the carrying mechanism 4, the bulk material conveying mechanism and the energy storage bulk material, and the traction mechanism is used to pull the carrying mechanism 4, the bulk material conveying mechanism and the energy storage bulk material to slide along the carrying mechanism 1.

[0087] By decoupling the load-bearing and traction functions, the stress concentration problem of traditional single-cable load-bearing and traction systems can be solved, while also avoiding the problem of direct force pulling on the conveyor belt 8. The independent structures can cooperate with each other to reduce the mutual interference between load-bearing and traction, ensuring stable and reliable load-bearing and traction effects.

[0088] Two parallel and vertically mounted drive wheels 3 can be used for the traction rope 2 to wrap around. The traction rope 2 is wrapped around the drive wheel 3. Combined with the friction between the traction rope 2 and the drive wheel 3, the drive wheel 3 drives the traction rope 2 to move stably and continuously during the rotation process, ensuring the reliable and stable continuous gravity flow and energy flow.

[0089] Compared to traditional horizontal wheels, the vertically mounted drive wheel 3 reduces floor space, overcomes terrain gradient restrictions, and offers simpler terrain requirements, making it easier to install on more sloping areas and deploy in diverse terrains. It is particularly suitable for complex geological environments such as mountains, hills, and ravines. This facilitates the formation of a driving traction surface that mates with the traction cable 2, ensuring continuous movement of the traction cable 2 along a defined, looping surface.

[0090] The electric generator mechanism 5 connected to the driving wheel 3 can drive the driving wheel 3 to actively rotate, forming a continuous gravity flow through the continuously lifted energy storage bulk material.

[0091] At the same time, the continuously descending energy storage bulk material can drive the driving wheel 3 to rotate passively, so that the lifted energy storage bulk material can convert the gravity energy in the form of potential energy into electrical energy that can be generated by the electric generator 5 during the descending process to form a continuous energy flow.

[0092] From the perspective of facilitating belt conveying of energy storage bulk materials, the conveyor belt 8 in the present application includes a corrugated sidewall belt 8a, which includes a closed and looped base belt 81, and corrugated sidewalls 82 and transverse partitions 83 arranged on the material conveying surface of the base belt 81. The corrugated sidewalls 82 are continuously arranged on both sides of the base belt 81 in the length direction, and the transverse partitions 83 are arranged at intervals between the corrugated sidewalls 82.

[0093] The corrugated ribs 82 and the transverse partitions 83 can form a multi-grid space for feeding materials on the conveyor belt 8, which is conducive to forming a multi-grid structured cavity. During operation, each cavity can be filled with energy storage bulk material as needed, or filled with energy storage bulk material at intervals to achieve scale adjustment of gravity flow and energy flow.

[0094] From the perspective of the connection between the carrying mechanism 4 and the conveyor belt 8, the corrugated rib 82 is vertically perpendicular to the belt surface of the base belt 81, and the root of the corrugated rib 82 is connected to the inner side of the edge of the base belt 81, which is used to form a clamping space for the conveyor belt 8 by the carrying mechanism 4.

[0095] The corrugated sidewall belt 8a allows for conveying at angles between 0° and 90°, achieving maximum height differentials within the shortest belt length. The corrugated sidewalls 82 and crossbars 83 prevent material from slipping. The sidewall height, crossbar spacing, and base belt 81 width can be customized to meet your needs.

[0096] The base belt 81 is laid on the carrier frame 4a of the carrier mechanism 4 and fixed to the carrier frame 4a by a clamping device, so that the base belt 81 moves with the carrier frame 4a. The base belt 81, corrugated ribs 82 and diaphragms 83 are manufactured into an integrated structure through a process.

[0097] Improperly installed idlers on conventional belts twist the belt, causing it to sway. In this application, the carrier mechanism 4 is fixed to the conveyor belt 8, eliminating this problem. The idlers are positioned throughout the conveyor line, requiring significant labor, material, and time for inspection and maintenance. This application allows for the fixed inspection and maintenance of the carrier rack 4a at specific locations.

[0098] In this application, different sections of the two closed, looped traction cables 2 constitute an upward traction cable 21 and a downward traction cable 22. Regarding the specific components of the traction cables 2, the upward traction cable 21 includes a steering wheel section 211, a lower horizontal section 212, an upper inclined section 213, and an upper horizontal section 214. A traction cable guide device 23 consisting of multiple guide wheel assemblies is arranged at the junction of the upper inclined section 213, the upper horizontal section 214, and the lower horizontal section 212 to facilitate a smooth transition between the sections.

[0099] The down-going traction cable 22 can be directly composed of the drive wheel section 221 and the downwardly inclined section 223. The traction cable 2 is directly connected to the steering wheel section 211 after transitioning from the drive wheel section 221. However, due to the large diameter of the drive wheel 3, the distance between the upwardly inclined section 213 and the downwardly inclined section 223 of the conveyor belt 8 at the steering position of the drive wheel 3 is increased, resulting in the track column or the upper branch of the conveyor belt 8 being located higher. Therefore, it is necessary to consider the necessary structure to reduce the distance between the upwardly inclined section 213 and the downwardly inclined section 223.

[0100] Based on this, the downward traction rope 22 of the present invention includes a driving wheel section 221, an upper arc-shaped redirecting section 222, a lower inclined section 223, and a lower arc-shaped redirecting section 224. The upper arc-shaped redirecting section 222 is the section of the driving wheel section 221 that curves upward toward the upper inclined section 213 and the upper horizontal section 214 of the upward traction rope 21 after turning. The lower arc-shaped redirecting section 224 is the section of the lower inclined section 223 that curves upward toward the upper inclined section 213 and the lower horizontal section 212 of the upward traction rope 21 when the lower inclined section 223 is about to reach the turning wheel section 211.

[0101] The upper arc-shaped redirecting section 222 and the lower arc-shaped redirecting section 224 are provided mainly to reduce the distance between the upper inclined section 213 and the lower inclined section 223 , which is specifically formed by regulating the multiple traction rope guide devices 23 on both sides of the top and bottom of the lower inclined section 223 .

[0102] On the one hand, this can raise the lower inclined section 223 of the downward traction cable 22, lowering the height of the track column or the upper branch of the conveyor belt 8, thereby increasing overall stability and reducing investment. On the other hand, it can increase the contact angle and contact area between the traction cable 2 and the drive wheel 3 / steering wheel 32, thereby improving traction and increasing the system's transportation capacity and charging and discharging power.

[0103] Based on the structural form of the closed-loop circulation of the load-bearing track 10, the closed-loop plane of the traction cable 2 and the parallel arrangement of the driving wheel 3, the closed-loop plane of the load-bearing track 10, the closed-loop plane of the traction cable 2 and the wheel surface of the driving wheel 3 are parallel to each other, which can form the overlap of the driving traction surface of the traction cable 2 and the surface of the traction cable 2 wrapped around the driving wheel 3, and at the same time form a stable and reliable operating load-bearing surface and traction surface, avoiding the risk of deviation of the carrying mechanism 4 to the greatest extent and ensuring operational stability.

[0104] The two bearing rails 10 include U-shaped channel steels with opening directions facing each other, and the U-shaped channel steels can effectively cooperate with the running wheels 44.

[0105] The traveling wheels 44 are accommodated in the U-shaped channel steel and can roll along the U-shaped channel steel, thereby enabling the transport rack 4 a to run in a closed loop along the carrying track 10 .

[0106] From the perspective of the parallel arrangement of the carrying rails 10 , the two carrying rails 10 are mirror-symmetrical with respect to the traction rope 2 , and the carrying rails 10 include an upper branch rail 10 a and a lower branch rail 10 b .

[0107] The upper branch track 10a includes an upward curved turning section 10a1, an upward bottom horizontal section 10a2, an upward inclined section 10a3 and an upward top horizontal section 10a4;

[0108] The lower branch track 10b includes a downward arc-shaped turning section 10b1, a downward top guide section 10b2, a downward inclined section 10b3 and a downward bottom guide section 10b4. The bearing tracks 10 in the above different sections form a closed loop structure.

[0109] In this application, the support rail 10 follows the same path as the traction cable 2, forming a circular track by connecting them end to end. The support rail 10 is fixed to the ground via multiple columns. The inner groove of the U-shaped channel steel of the support rail 10 is used to mount the running wheels 44, which are used to allow the carrying rack 4a to run in a closed loop along the support rail 10.

[0110] Since the load-bearing track 10 and the traction rope 2 have the same layout route, the different sections of the upper branch track 10a correspond in sequence to the steering wheel section 211, the lower horizontal section 212, the upper inclined section 213 and the upper horizontal section 214 included in the upper traction rope 21, and the different sections of the lower branch track 10b correspond in sequence to the driving wheel section 221, the upper arc-shaped redirecting section 222, the lower inclined section 223 and the lower arc-shaped redirecting section 224 included in the downward traction rope 22.

[0111] From the perspective of the installation location, the upward arc-shaped turning section 10a1 is set on the periphery of the steering wheel 32, the downward arc-shaped turning section 10b1 is set on the periphery of the driving wheel 3, and the downward top guide section 10b2 and the downward bottom guide section 10b4 are both bent and extended toward the upper branch track 10a, so as to cooperate with the upper arc-shaped redirecting section 222 and the lower arc-shaped redirecting section 224 of the downward traction rope 22, thereby reducing the height of the track column, increasing the overall stability and reducing investment.

[0112] The different sections corresponding to the annular traction rope 2 and the carrying rail 10 are located on the same plane, forming a surrounding plane of the traction rope 2 .

[0113] In the present invention, each transport mechanism 4 includes a transport frame 4a connected between the conveyor belt 8 and the traction rope 2. The transport frame 4a includes a rope connecting frame 41 located on both sides of the travel direction. The rope connecting frame 41 can establish a connection relationship between the transport frame 4a and the traction rope 2, so that the traction rope 2 drives the transport frame 4a and the conveyor belt 8 to run continuously.

[0114] The connection structure between the carrier frame 4a and the traction cable 2 is provided with rope fixing devices 7 at both ends of the rope connecting frame 41. The rope fixing devices 7 are pivotally connected to the ends of the rope connecting frame 41 via slew bearings 71 and are fixedly connected to the traction cable 2. This arrangement allows the traction cable 2 to drive the carrier frame 4a in synchronous operation, while also allowing the carrier frame 4a to flexibly bend and deform along with the conveyor belt 8 at the drive wheel 3 and steering wheel 32, thereby ensuring continuous and stable operation of the carrier frame 4a and the conveyor belt 8.

[0115] Combine Figure 5 The rope fixing device 7 includes a fixed connection part with a jaw 72, which can enable the jaw 72 to clamp and fix the traction rope 2. At the same time, the setting of the slewing bearing 71 can enable the transport frame 4a to form adaptive steering during the flexible deformation process, maintaining a real-time connection relationship with the traction rope 2.

[0116] Combine Figure 2-Figure 3The carrying frame 4a in the present invention is a structural form that is both rigid and flexible. During operation, it can maintain the rigid support state of the plane frame, and can also perform flexibly bending deformation at the top and bottom sides of the energy storage system. On the one hand, it adapts to the circumferential direction of the conveyor belt 8, and on the other hand, it can follow the traction rope 2 to perform flexibly bending at the turning position.

[0117] Specifically, the transport rack 4a also includes a plurality of rack slats 42 arranged side by side between the rope connecting frames 41. The plurality of rack slats 42 are connected by an assembling mechanism 43 located therebelow, thereby realizing the rigid-flexible deformation conversion of the plurality of rack slats 42.

[0118] Multiple rack slats 42 are arranged at intervals along the traveling direction of the transport rack 4a. From the perspective of establishing a load-bearing relationship with the load-bearing rail 10, the rack slats 42 on both sides of the traveling direction are connected with running wheels 44, and the running wheels 44 can roll along the load-bearing rail 10, thereby realizing the continuous operation of the transport rack 4a along the load-bearing rail 10.

[0119] From the perspective of installing the running wheel 44 on the carrying frame 4a, the two ends of the frame slats 42 are connected to the wheel set fixing frame 45, the inner ring of the running wheel 44 is installed on the wheel set fixing frame 45 through the wheel axle, and the outer ring of the running wheel 44 rolls on the double-circulation carrying mechanism 1.

[0120] The load-bearing track 10 comprises a closed, surrounding structure, and the traction cable 2 is disposed within the inner side of the load-bearing track 10. In other words, the traction cable 2 is disposed within the enclosed space of the load-bearing track 10, thereby maintaining spatial isolation between the load-bearing and traction effects. Of course, this is not a limitation in the present application; corresponding technical effects can also be achieved by disposing the traction cable 2 outside the enclosed space of the load-bearing track 10, which will not be further elaborated here.

[0121] Based on the fact that the traction rope 2 is arranged on the inner side of the closed space of the load-bearing rail 10, the running wheels 44 and the rope fixing device 7 are respectively arranged on the upper and lower sides of the carrying frame 4a. Specifically, the upper and lower sides are defined based on the supporting surface of the carrying frame 4a, so that the running wheels 44 and the rope fixing device 7 can respectively form a rolling and connection relationship with the load-bearing rail 10 and the traction rope 2.

[0122] When the upward traction rope 21 of the transport rack 4a is running, the rack slats 42 can effectively support the conveyor belt 8 upward, while when the downward traction rope 22 is running, it is necessary to prevent the conveyor belt 8 from falling off the transport rack 4a.

[0123] Specifically, each end of each rack strip 42 is connected to a pressure plate 46. The edge of the base belt 81 of the conveyor belt 8 is clamped between the pressure plate 46 and the rack strip 42. The pressure plate 46 is fastened to the rack strip 42 by bolts. This arrangement ensures an effective connection between the carrier rack 4a and the conveyor belt 8. The clamping and fixing of the pressure plate 46 between the corrugated sidewall belt 8a and the edge of the base belt 81 ensures a reliable and stable connection between the carrier rack 4a and the conveyor belt 8, regardless of whether the upward traction cable 21 or the downward traction cable 22 is in operation.

[0124] It should be pointed out that in order to ensure the effectiveness of the clamping and fixing connection, it should be ensured that there is enough clamping space between the corrugated sidewall belt 8a and the edge of the base belt 81, which is fully emphasized here.

[0125] In the specific structure of the carrying mechanism 4 in the present application, a clamping block 40a is provided between adjacent rack slats 42, and the width of the clamping block 40a is the same as the gap between the rack slats 42. In this form, due to the setting of the clamping block 40a, the excessive bending of the rack slats 42 after reaching the supporting plate surface state can be limited.

[0126] Specifically, when the transport rack 4a is in a flat state, the rack strips 42 and the clamping blocks 40a abut against each other to form an integral plane; when receiving bulk materials, due to the mutual squeezing effect of the rack strips 42 and the clamping blocks 40a, the rigidity of the plane is enhanced, and when the structure is changed direction by the driving wheel 3 or the steering wheel 32, the assembly mechanism 43 drives the transport rack 4a to bend, and the rack strips 42 and the clamping blocks 40a naturally disengage to form a flexible shape, thereby achieving a smooth transition.

[0127] Based on the above description, the clamping block 40 a and the rack strip 42 are connected to form an integral structure through an assembling mechanism 43 . The assembling mechanism 43 includes a flexible guide chain 40 b arranged below the rack strip 42 .

[0128] The flexible guide chain 40b includes a plurality of chain links 40c that are hingedly connected in an inner and outer staggered manner. Each chain link 40c is respectively arranged corresponding to the clamping block 40a and the rack strip 42, and is connected to the bottom of the clamping block 40a and the rack strip 42 through a fixing plate 47.

[0129] More specifically, the chain links 40c are divided into two categories: outer links 40c, which are the two outer links of the flexible guide chain 40b; and inner links 40c, which are the two inner links of the flexible guide chain 40b. The two inner links 40c are connected together by a sleeve. Slots are defined between the inner and outer links 40c and the sleeves, and a pin is used to form a complete chain link 40c. One side of the outer link 40c is connected to a fixing plate 47 with threaded holes for securing to the clamping block 40a. The inner link 40c is also connected to a fixing plate 47 with threaded holes for securing to the rack strip 42.

[0130] The dual-wheel drive mechanism in the present invention includes a horizontally arranged transmission shaft 31, and two drive wheels 3 are vertically connected to the transmission shaft 31 and are arranged at intervals relative to the axial direction of the transmission shaft 31. The interval space between the two drive wheels 3 constitutes the traction and movement space of the carrying mechanism 4 and the flipping and turning space at the position of the drive wheels 3.

[0131] In another specific implementation, the two driving wheels 3 can also be driven independently, and the two driving wheels 3 are arranged in a mirror-symmetrical manner, which can also achieve the above-mentioned technical effect.

[0132] From the perspective of constructing the driving traction surface as mentioned above, the two traction ropes 2 are respectively wrapped around the corresponding driving wheels 3, so that the driving wheels 3 drive the traction ropes 2 to run through the friction between the traction ropes 2 and the driving wheels 3 in the surrounding contact.

[0133] The end of the transmission shaft 31 is connected to the electric generator mechanism 5, which specifically includes an electric generator. The electric generator has both driving and discharging functions. During the energy storage stage, it can drive the driving wheel 3 to actively rotate through the driving function, and at the same time, the energy storage bulk material at the bottom of the energy storage system is lifted by the traction rope 2, the carrying rack 4a and the conveyor belt 8 to form a continuous gravity flow.

[0134] And in the discharge stage, the energy storage bulk material at the top of the energy storage system can be lowered and transported through the carrying rack 4a and the conveyor belt 8, and the traction rope 2 is driven by the carrying rack 4a to run, further causing the driving wheel 3 to passively rotate, and then the electric generator to rotate, so that the gravity flow is converted into an energy flow in the form of electrical energy through the discharge function.

[0135] See also Figure 4 The driving wheel 3 includes two active driving wheels 3 connected by a horizontal transmission shaft 31, or two active driving wheels 3 driven separately, and the electric generator includes an output shaft, which is connected to the horizontal transmission shaft 31 through a coupling.

[0136] The specific form of the electric generator mechanism 5 is not limited in this application. In addition to the electric generator connected to the above-mentioned transmission shaft 31, one of the drive wheels 3 can also be connected to the motor, and the other drive wheel 3 can be connected to the generator. By controlling the clutch of the drive wheel 3 and the motor or generator in different energy storage and discharge stages, the motor and generator can perform different functions on the premise that the two drive wheels 3 maintain transmission connection.

[0137] It should be noted that the synchronous operation of the two independent drive wheels 3 can also be maintained through mechanical or electrical control, which will not be described in detail here.

[0138] The two traction ropes 2 each include a single closed-loop annular traction rope 2 , and a section of the annular traction rope 2 passes around the driving wheel 3 .

[0139] From the perspective of the parallel arrangement of the traction ropes 2, the two traction ropes 2 each include a single closed-loop annular traction rope 2, the annular traction rope 2 passes through the drive wheel 3, and the different sections corresponding to the annular traction rope 2 and the supporting mechanism 1 are on the same plane, forming a closed-loop plane of the traction rope 2, and ensuring that the bearing surface formed by the supporting mechanism 1 and the driving traction surface are on the same plane.

[0140] Preferably, the annular traction ropes 2 are vertically arranged on the same plane, and combined with their encircling around the driving wheel 3, they can maintain a relatively stable driving traction surface parallel to the load-bearing closed loop plane.

[0141] The two-wheel drive mechanism is arranged at the top of the energy storage system, that is, the two-wheel drive mechanism is installed on a high-lying platform. Through this arrangement, the two-wheel drive mechanism can directly output and transmit the traction load to the traction rope 2 and the carrying frame 4a, thereby reducing the load of the energy storage system during the energy storage process and reducing the overall force load of the traction rope 2. Compared with the traditional form of setting the drive mechanism at the bottom, it can reduce the invalid load during bottom traction and improve the conversion rate during the energy storage process.

[0142] The two-wheel drive mechanism is installed through a drive mounting mechanism, which includes relatively mounted drive supports 6 and an energy storage device mounting seat. The transmission shaft 31 and the drive wheel 3 are installed between the drive supports 6, and the electric generator is installed on the energy storage device mounting seat (not shown in the figure).

[0143] The energy storage system in the present invention, in addition to the driving system located at the top, also needs to consider setting up a necessary steering mechanism in order to maintain the stability of the load-bearing and traction cycles.

[0144] A detour wheel group is provided at the bottom of the energy storage system. The detour wheel group is mainly used to cooperate with the steering of the bearing mechanism 1, the transport mechanism 4, the traction mechanism and the bulk material conveying mechanism at the bottom. Preferably, in order to maintain the stability and integrity of the running bearing surface and the driving traction surface, the detour wheel group also includes two parallel vertically mounted steering wheels 32. The steering wheel 32 has the same structure as the driving wheel 3 and the wheel surface of the steering wheel 32 is arranged on the same plane as the wheel surface of the driving wheel 3. Preferably, the wheel surface of the steering wheel 32 is arranged on the same vertical plane as the wheel surface of the driving wheel 3.

[0145] It should be pointed out that in addition to the most economical top-up drive form, the bottom-down drive form can also be adopted, that is, the dual-wheel drive mechanism is set at the bottom of the energy storage system, and the roundabout wheel group is set at the top of the energy storage system; or the top and bottom can be driven up and down at the same time, that is, the dual-wheel drive mechanism is set at the top and bottom of the energy storage system. Both can meet the operation requirements and can be specifically set according to actual conditions.

[0146] From the perspective of connection and installation, the two steering wheels 32 have the same connection and installation structure as the driving wheel 3. They are installed through the set steering support and are coaxially connected through the necessary transmission shaft 31 to ensure that the two steering wheels 32 maintain a relatively synchronous rotation relationship.

[0147] Each traction rope 2 is closed and looped between the corresponding driving wheels 3 and the steering wheels 32 in a group, forming a driving traction surface corresponding to each traction rope 2.

[0148] In order to maintain a stable and reliable fit between the traction rope 2 and the driving wheel 3 and the steering wheel 32, wheel grooves 33 are respectively provided on the wheel surfaces of the driving wheel 3 and the steering wheel 32. Preferably, the wheel grooves 33 are provided at the same positions on the driving wheel 3 and the steering wheel 32 and correspond to each other up and down.

[0149] The traction rope 2 is compressed and wrapped in the wheel groove 33 , and the wheel groove 33 specifically plays a role of limiting cooperation, keeping the plane of the traction rope 2 parallel to the bearing surface.

[0150] During operation, the traction rope 2 moves in a circular motion under the action of the friction force between it, the driving wheel 3 and the steering wheel 32 when the traction rope is pressed against them. In order to enhance the friction force, ensure synchronous operation and prevent slipping, a necessary anti-slip structure is provided in the wheel groove 33 to ensure continuous and stable circular motion of the traction rope 2.

[0151] Regarding the assembling mechanism 43 on the transport frame 4a, in order to be able to form reliable deformation of the transport frame 4a at the turning parts on both the top and bottom sides, the transport frame 4a needs to be supported and guided as necessary. Therefore, guide sprockets 34 are arranged in pairs between the driving wheels 3 and between the steering wheels 32. The guide sprocket 34 is coaxially connected to the driving wheel 3 or the steering wheel 32, and can maintain the synchronous rotation of the guide sprocket 34 and the driving wheel 3 or the steering wheel 32. Furthermore, the guide sprocket 34 is meshed and connected with the assembling mechanism 43, which not only enhances the driving ability of the system, but also plays an effective synchronous support role for the conveyor belt 8.

[0152] Starting from the different stages of energy storage and discharge, the load-bearing rail-type bulk material conveying gravity flow energy storage system also includes a storage yard for storing stored energy bulk materials. The storage yard is set at the top and bottom of the energy storage system, and the stored energy bulk materials are transported back and forth between the storage yard and the bulk material conveying mechanism through transfer equipment.

[0153] Through the load-bearing rail-type bulk material conveying gravity flow energy storage system in the utility model, a continuous steady-state gravity flow and energy flow can be constructed, and under the premise of improving the carrying capacity, high-efficiency operation of the energy storage and power generation states can be guaranteed, and high-power storage / discharge of electric energy can be achieved.

[0154] The present utility model also provides a bulk material conveying gravity flow energy storage method, which is performed by the load-bearing track type bulk material conveying gravity flow energy storage system described in the aforementioned embodiment, and specifically includes an energy storage stage and a discharge stage.

[0155] During the energy storage phase, the load-bearing rail-type bulk material conveying gravity flow energy storage system continuously transports the energy storage bulk material located in the storage yard at the bottom of the energy storage system from bottom to top, creating a continuous gravity flow through the lifting of the energy storage bulk material. During the energy storage process, the electric generator 5 converts electrical energy into kinetic energy, which is smoothly transferred to the drive wheel 3, driving it to rotate clockwise.

[0156] The driving wheel 3 drives the traction rope 2 to start a circular movement through the friction between the driving wheel 3 and the traction rope 2. At the same time, the traction rope 2 cooperates with the steering wheel 32 to cause the steering wheel 32 to rotate in a clockwise direction.

[0157] As the traction cable 2 continues to move, the carrier mechanism 4, clamped to it, is pulled continuously along the pre-set support structure 1. The carrier mechanism 4 drives the conveyor belt 8 and the energy storage bulk material, which has been dumped into the multi-compartment space of the conveyor belt 8 by the transfer equipment, to move upward. When approaching the top storage area, the energy storage bulk material automatically dumps and is quickly transported to the top storage area by the transfer equipment. The carrier mechanism 4 and conveyor belt 8 then enter a curved track. The carrier mechanism 4 then drives the conveyor belt 8 along the circular track, eventually returning to the horizontal track, ready to begin a new round of energy storage bulk material transportation.

[0158] During the discharge phase, the load-carrying track-type bulk material conveying gravity flow energy storage system continuously transports the energy storage bulk material located in the top storage yard from top to bottom, forming a continuous energy flow through the falling energy storage bulk material. During the discharge process, the energy storage bulk material located in the top storage yard is transferred by the transfer equipment to the multi-grid space on the conveyor belt 8.

[0159] Under the action of gravity, the energy-storage bulk material slides down along the carrying mechanism 1 together with the conveyor belt 8 and the carrying mechanism 4, releasing the contained energy. The carrying mechanism 4 drives the traction rope 2 to start moving through its connection with the conveyor belt 8 and the traction rope 2.

[0160] The friction between the traction cable 2 and the wheel groove 33 transmits motion to the drive wheel 3 and the steering wheel 32, causing them to rotate counterclockwise. The rotation of the drive wheel 3 is then transmitted to the electric generator 5. The electric generator 5 enters the power generation mode, converting kinetic energy into electrical energy and feeding it into the power grid.

[0161] When approaching the bottom storage yard, the energy storage bulk material automatically tips over and is quickly transported by the transfer equipment for storage and transport to the bottom storage yard. Meanwhile, the transport mechanism 4 continues to drive the conveyor belt 8 along the circular track. Eventually, the transport mechanism 4 drives the conveyor belt 8 back to the horizontal track, ready to begin a new round of transporting energy storage bulk material.

[0162] During operation, the conveyor belt 8 follows the travel speed of the transport mechanism 4 and the carrying capacity of the energy storage bulk material, thereby achieving adjustable gravity flow. This allows the energy flow to be adjusted on demand, thereby achieving the functions of "slow charging and fast discharging" or "charging and discharging on demand".

[0163] At the same time, the load-bearing rail-type bulk material conveying gravity flow energy storage system can also be economically and reliably designed and manufactured in modular form, and can be arranged in parallel and / or stacked up and down according to the hillside terrain to achieve larger-scale energy storage.

[0164] It should be noted that, unless there is any conflict, the features in the embodiments of this application can be combined with each other.

[0165] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A load-bearing track bulk material conveying gravity flow energy storage system, characterized in that: It includes a double-circulation carrying mechanism, a double-circulation traction mechanism, a double-wheel drive mechanism, a transport mechanism and a bulk material conveying mechanism; The dual-circulation carrying mechanism includes two parallel upward-inclined closed-circuit carrying rails; the dual-circulation traction mechanism includes two parallel upward-inclined closed-circuit traction cables; the dual-wheel drive mechanism includes two parallel vertically mounted drive wheels; at least a portion of the traction cables is looped around the drive wheels and is driven by the drive wheels to continuously run; The bulk material conveying mechanism includes a closed and looped conveying belt for carrying energy storage bulk material as an energy storage carrier; A plurality of carrying mechanisms that can run synchronously with the two traction ropes are connected between the two traction ropes, and the carrying mechanisms can run in a closed loop along the carrying track; The carrying mechanism is connected to the conveyor belt so that the carrying mechanism can drive the conveyor belt to run continuously under the traction of the traction rope and the support of the carrying rail; The driving wheel is connected to an electric power generation mechanism; The electric generator mechanism is used to drive the driving wheel to actively rotate, forming a continuous gravity flow through the continuously lifted energy storage bulk material; Furthermore, the driving wheel is driven to rotate by the continuously descending energy storage bulk material, so as to convert the gravitational potential energy into the electrical energy of the electric generator mechanism to form a continuous energy flow.

2. The load-bearing track bulk material conveying gravity flow energy storage system according to claim 1, characterized in that: Each of the transport mechanisms includes a transport frame connected between the conveyor belt and the traction rope, and the transport frame includes a rope connecting frame located on both sides of the travel direction. Rope fixing devices are provided at both ends of the rope connecting frame. The rope fixing devices are rotatably pivoted at both ends of the rope connecting frame through a slewing bearing, and the rope fixing devices are fixedly connected to the traction rope.

3. The load-bearing track bulk material conveying gravity flow energy storage system according to claim 2, characterized in that: The transport rack further comprises a plurality of rack strips arranged side by side between the rope connecting frames, wherein the plurality of rack strips are connected by an assembling mechanism located below the plurality of rack strips; The plurality of rack strips are arranged at intervals along the travel direction of the transport mechanism, and the rack strips located on both sides of the travel direction are connected with running wheels, and the running wheels can roll along the carrying track; Both ends of the rack strip are connected to wheel set fixing frames, the inner ring of the running wheel is installed on the wheel set fixing frame through the wheel axle, and the outer ring of the running wheel rolls on the load-bearing track.

4. The load-bearing track bulk material conveying gravity flow energy storage system according to claim 3, characterized in that: The load-bearing track includes a closed surrounding structure, and the traction rope is arranged on the inner side of the load-bearing track; The walking wheels and the rope fixing device are respectively arranged on the upper and lower sides of the carrying frame, and pressure plates are connected to both ends of each frame strip. The edge of the conveyor belt is clamped between the pressure plate and the frame strip, and the pressure plate is fastened to the frame strip by bolts.

5. The load-bearing track bulk material conveying gravity flow energy storage system according to claim 3, characterized in that: A clamping block is provided between adjacent rack strips, and the width of the clamping block is the same as the gap between the rack strips; The clamping block and the rack strip are connected to form an integral structure through the assembling mechanism, and the assembling mechanism includes a guide chain arranged below the rack strip; The guide chain includes a plurality of chain links that are hingedly connected inwardly and outwardly staggered, each of the chain links being respectively arranged corresponding to the clamping block and the rack strip, and being connected to the bottom of the clamping block and the rack strip through a fixing plate.

6. The load-bearing track bulk material conveying gravity flow energy storage system according to claim 3, characterized in that: The dual-wheel drive mechanism includes a horizontally arranged transmission shaft, the two drive wheels are vertically connected to the transmission shaft and are spaced apart relative to the axial direction of the transmission shaft, or the two drive wheels are independently driven and arranged in mirror symmetry; The two traction ropes are respectively wrapped around corresponding driving wheels, so as to enable the driving wheels to drive the traction ropes to run through the friction force of the wrapping contact; The end of the transmission shaft is connected to the electric generator mechanism, the electric generator mechanism includes an electric generator, the electric generator includes an output shaft, and the output shaft is connected to the transmission shaft through a coupling; The two traction ropes respectively include a single closed-loop annular traction rope, and a section of the annular traction rope is looped around the driving wheel.

7. The load-bearing track bulk material conveying gravity flow energy storage system according to claim 6, characterized in that: The dual-wheel drive mechanism is arranged on top of the energy storage system; A detour wheel group is provided at the bottom of the energy storage system, and the detour wheel group includes two vertically mounted steering wheels arranged in parallel, the steering wheels having the same structure as the driving wheels, and the wheel surfaces of the steering wheels and the driving wheels are arranged on the same plane; Each of the traction cables is enclosed and looped between the corresponding driving wheels and the steering wheels, and the driving wheels and the steering wheels are respectively provided with wheel grooves, and the traction cables are compressed and looped in the wheel grooves; Alternatively, the dual-wheel drive mechanism is arranged at the bottom of the energy storage system, and the roundabout wheel set is arranged at the top of the energy storage system; Alternatively, the dual-wheel drive mechanism is provided at both the top and the bottom of the energy storage system.

8. The load-bearing track bulk material conveying gravity flow energy storage system according to claim 7, characterized in that: Guide sprockets are provided in pairs between the driving wheels and between the steering wheels. The guide sprockets are coaxially connected to the driving wheels or the steering wheels and meshed with the assembling mechanism.

9. The load-bearing track bulk material conveying gravity flow energy storage system according to claim 7, characterized in that: The two bearing rails include U-shaped channel steels with opening directions facing each other, and the running wheels are accommodated in the U-shaped channel steels and can roll along the U-shaped channel steels; The bearing track includes an upper branch track and a lower branch track, and the upper branch track includes an upward arc-shaped turning section, an upward bottom horizontal section, an upward inclined section, and an upward top horizontal section; The lower branch track includes a downward arc-shaped turning section, a downward top guide section, a downward inclined section, and a downward bottom guide section. The upward arc-shaped turning section is arranged on the periphery of the steering wheel, the downward arc-shaped turning section is arranged on the periphery of the driving wheel, and the downward top guide section bends and extends toward the upper branch track. The different sections corresponding to the traction rope and the carrying rail are located on the same plane, forming a surrounding plane of the traction rope.

10. The load-bearing track bulk material conveying gravity flow energy storage system according to claim 1, characterized in that: It also includes a storage yard for storing the energy storage bulk material, the storage yard is arranged at the top and bottom of the energy storage system, and the energy storage bulk material is transported back and forth between the storage yard and the bulk material conveying mechanism through a transfer device; The load-bearing track type bulk material conveying gravity flow energy storage system includes multiple sets, and the multiple sets of the load-bearing track type bulk material conveying gravity flow energy storage system are arranged in multiple rows in parallel and / or stacked up and down on the hillside terrain.

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