Chain-driven gravity energy storage system capable of discharging continuously

Abstract

The utility model discloses a chain-driven gravity energy storage system capable of discharging continuously, which comprises an annular conveying chain, two ends of the conveying chain at a high altitude side and a low altitude side are respectively in transmission connection with a top end chain wheel and a bottom end chain wheel, and the conveying chain is in transmission connection with a redirection chain wheel at a position close to the top end chain wheel at the high altitude side; the conveying chain forms a weight conveying section between the redirection chain wheel and the bottom end chain wheel, the weight conveying section is arranged along the weight conveying channel, and the conveying chain forms a loading and unloading transverse section between the top end chain wheel and the redirection chain wheel; a plurality of hooks are uniformly distributed on the conveying chain; the loading and unloading transverse section is located above the upper bin loading and unloading equipment, and the upper bin loading and unloading equipment can make the heavy object move at the speed higher than the conveying chain so that the heavy object hanging part can be disengaged from the hook. According to the scheme, the chain drives the heavy object to circularly move, the system can continuously and stably operate, current and voltage output fluctuation is avoided, and the effects of high-quality energy storage and power generation are achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of gravity energy storage power generation, and particularly relates to a chain driven sustainable discharge gravity energy storage system. BACKGROUND

[0002] The gravity energy storage system mainly consists of energy storage and discharge. During energy storage, the heavy objects are lifted from the lower part (lower bin) to the upper part (upper bin) for storage, and the electric energy is finally converted into gravitational potential energy; during discharge, the heavy objects are lowered from the upper part (upper bin) to the lower part (lower bin), and the gravitational potential energy is first converted into kinetic energy to drive the generator to generate electricity, and finally converted into electric energy. As a commercial and engineering power engineering, the success of the gravity energy storage project depends on whether it can provide continuous and stable current, which depends on the stability and continuity of lifting the heavy objects. The traditional gravity energy storage system, such as the one based on vertical shaft (vertical shaft) energy storage and the one based on mountain (slope) energy storage, generally lifts and lowers the heavy objects separately, and it is difficult to achieve continuous discharge. In addition, the gravity energy storage system also needs to consider the transportation problem during the lifting and lowering of the heavy objects. In the existing technical solutions, a lifting container such as a cage is used to carry the heavy objects, and a steel wire rope is used for transmission. The steel wire rope has the risk of slipping, and the safety and stability of the system need to be improved. SUMMARY

[0003] The utility model solves the technical problems that the prior art cannot realize continuous and stable current output, realizes the circulation of the heavy objects driven by the chain, the system can continuously and stably operate, avoids the fluctuation of current and voltage output, and achieves the effect of high-quality energy storage and power generation.

[0004] According to the technical scheme of the utility model, the utility model provides a chain driven sustainable discharge gravity energy storage system, which comprises a vertical or inclined heavy object conveying channel, an upper bin loading and unloading device and an upper bin are arranged on the high altitude side of the heavy object conveying channel, and a lower bin loading and unloading device and a lower bin are arranged on the low altitude side of the heavy object conveying channel; further comprising a ring-shaped conveying chain, the conveying chain is drivingly connected with a top end sprocket and a bottom end sprocket at both ends of the high altitude side and the low altitude side respectively, and a reversing sprocket is further drivingly connected to the conveying chain at the position close to the top end sprocket on the high altitude side; the conveying chain forms a heavy object conveying section between the reversing sprocket and the bottom end sprocket, the heavy object conveying section is arranged along the heavy object conveying channel, and the conveying chain forms a loading and unloading transverse section between the top end sprocket and the reversing sprocket; a plurality of hooks are uniformly distributed on the conveying chain; further comprising a plurality of heavy objects, the heavy objects are provided with heavy object suspension parts matched with the hooks; the upper bin loading and unloading device and the lower bin loading and unloading device are conveying devices; the loading and unloading transverse section is located above the upper bin loading and unloading device, and the upper bin loading and unloading device can move the heavy objects at a speed higher than that of the conveying chain to make the heavy object suspension parts separate from the hooks.

[0005] In some embodiments, the conveying chains are two horizontally arranged and synchronously operated chains with a spacing distance between the two conveying chains; the upper and lower warehouse loading and unloading devices are located between the two conveying chains.

[0006] In some embodiments, the hooks are two horizontally arranged hooks; the weight suspension part is a horizontal bar arranged on the weight, and the horizontal bar is exposed on both sides of the weight for the hooks to be hung.

[0007] In some embodiments, the weight is provided with a horizontal through hole above the center of gravity, the horizontal bar passes through the through hole of the weight, and the horizontal bar is rotationally connected with the weight through a bearing.

[0008] In some embodiments, the hook comprises a hook body and an auxiliary locking segment; the hook body is fixedly connected to the side of the conveying chain through a hook connecting piece, and the hook body forms a U-shaped structure protruding out of the conveying chain; the upper part of the side of the U-shaped structure away from the conveying chain is rotationally connected with the middle part of the auxiliary locking segment, and the auxiliary locking segment is curved towards the inner side of the U-shaped structure.

[0009] In some embodiments, the upper warehouse loading and unloading device is provided with a stopper for pushing the weight.

[0010] In some embodiments, the top end sprocket is connected with a power generation and motor device.

[0011] In some embodiments, the redirecting sprocket comprises a first redirecting sprocket and a second redirecting sprocket, the first redirecting sprocket is located on the inner side of the ring of the conveying chain, and the second redirecting sprocket is located on the outer side of the ring of the conveying chain.

[0012] In some embodiments, the bottom end sprocket is connected with a tensioning device.

[0013] In some embodiments, the upper warehouse loading and unloading device is located between the upper warehouse and the weight conveying channel, and the upper warehouse is provided with an upper warehouse conveying device between the upper warehouse and the upper warehouse loading and unloading device; the lower warehouse loading and unloading device is located between the lower warehouse and the weight conveying channel, and the lower warehouse is provided with a lower warehouse conveying device between the lower warehouse and the lower warehouse loading and unloading device.

[0014] Compared with the prior art, the beneficial technical effects of the utility model are as follows:

[0015] 1、The chain driven sustainable discharge gravity energy storage system of the utility model considers the electric power engineering application angle, splits the single large volume weight of the traditional gravity energy storage into standard small weights, designs an automatic loading and unhooking mode, realizes uniform speed, continuous and approximately constant weight operation of the chain under the influence of the gravity of the weight in the lifting and lowering process, and thereby provides sustainable and stable output current for the power grid.

[0016] 2, the power transmission part of the chain driven sustainable discharge gravity energy storage system adopts a chain, more preferably double chains, the structure of the chain is less likely to slip than a steel wire rope, and the positioning on the unit length is more accurate, and the length position of the chain can be controlled more accurately under the action of the tensioning device; and due to the accurate positioning characteristics, the position synchronization of the two chains during operation can be met, the design of the double chain plus the synchronous arrangement of the suspension device (hook) on both sides greatly improves the stability and safety of the weight during lifting and lowering.

[0017] 3, the design and arrangement of the novel suspension device used in the chain driven sustainable discharge gravity energy storage system can meet the automatic hooking and unhooking function of the weight, and the double chain or similar structure can avoid the contact between the suspension device and the driving wheel and each sprocket, improve the safety of the system, and reduce the design difficulty of the sprocket and the auxiliary structure.

[0018] 4, in the chain driven sustainable discharge gravity energy storage system, the weight preferably has a horizontal shaft (horizontal rod) inserted in the upper half of the weight, when being lifted by the hook, the horizontal rod is above the center of gravity of the weight, so that the weight can always maintain a stable state with the center of gravity downward during horizontal and vertical movement, improve the stability and anti-interference of the weight at different positions, reduce the risk of weight dumping, rollover and unhooking, and greatly improve the safety of system operation.

[0019] 5, the chain driven sustainable discharge gravity energy storage system is relatively simple in complexity and low in technical difficulty, which is beneficial to implementation and construction. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the overall structure schematic diagram of the system provided by the utility model.

[0021] Figure 2 is the front view structural schematic diagram of the weight provided by the utility model.

[0022] Figure 3 is Figure 2 the top view.

[0023] Figure 4 is Figure 3 the sectional view of A-A surface in

[0024] Figure 5 is the overall structure schematic diagram of the system provided by another embodiment of the utility model.

[0025] Figure 6 is the structure schematic diagram of the hook provided by the utility model.

[0026] Explanation of reference numerals in the drawings:

[0027] 1, heavy object conveying passage; 21, upper warehouse loading and unloading device; 211, stop block; 22, upper warehouse; 23, upper warehouse conveying device; 31, lower warehouse loading and unloading device; 32, lower warehouse; 33, lower warehouse conveying device; 4, conveying chain; 41, top sprocket; 42, bottom sprocket; 43, reversing sprocket; 431, first reversing sprocket; 432, second reversing sprocket; 44, hook; 441, hook body; 442, auxiliary locking section; 5, heavy object; 51, crossbar; 52, bearing; 6, tensioning device. DETAILED DESCRIPTION

[0028] The utility model provides a chain type drive's sustainable discharge gravity energy storage system, mainly aims at solving the problem that prior art cannot realize current output persistence, stable, in typical implementation, gravity energy storage system is driven by chain and makes heavy object circulate, heavy object is automatically locked or unlocked through the suspension device on the driving chain in the lower warehouse loading and unloading area, realizes automatic unhooking through specific loading and unloading equipment in the upper warehouse loading and unloading area, and the loading, carrying and storage of heavy object are completed by the loading and unloading equipment and conveying device arranged in the upper warehouse and lower warehouse. The utility model runs simply, can realize the automatic loading and unloading of heavy object in the uniform speed running process of chain, can optionally make the total weight of lifting heavy object constant in running, and the system can continuously and stably run, avoids current and voltage output fluctuation, reaches the effect of high quality energy storage and power generation.

[0029] Please refer to Figure 1 The utility model discloses a chain type drive's sustainable discharge gravity energy storage system, including vertical or oblique heavy object conveying passage 1 ( Figure 1 The embodiment shown is a vertical shaft type), and the heavy object conveying passage 1 has vertical drop, and the high altitude side of heavy object conveying passage 1 is provided with upper warehouse loading and unloading device 21 and upper warehouse 22, and the low altitude side of heavy object conveying passage 1 is provided with lower warehouse loading and unloading device 31 and lower warehouse 32.

[0030] Still include annular conveying chain 4, and the annular conveying chain 4 forms a transmission chain that can continuously run and run in reverse, and the top sprocket 41 and the bottom sprocket 42 are respectively drivenly connected to the two ends of the conveying chain 4 at the high altitude side and the low altitude side, and the reversing sprocket 43 is further drivenly connected to the position of the conveying chain 4 at the high altitude side and close to the top sprocket 41. The heavy object conveying section is formed between the reversing sprocket 43 and the bottom sprocket 42 of the conveying chain 4, and the heavy object conveying section is arranged along the heavy object conveying passage 1. The loading and unloading transverse section is formed between the top sprocket 41 and the reversing sprocket 43 of the conveying chain 4. The conveying chain 4 is uniformly distributed with a plurality of hooks 44, that is, the suspension device for suspending the heavy object 5.

[0031] It also includes multiple weights 5, each weight 5 having a weight suspension part that matches the hook 44. The weight suspension part is, for example, a hanging ring, hook, or rod, so that it can be hung on the hook 44 of the conveyor chain 4. The hook 44 is, for example, U-shaped, and the opening of the U-shape of the hook 44 allows the weight suspension part to enter and exit, so as to realize the loading and unloading between the weight 5 and the conveyor chain 4.

[0032] Both the upper loading / unloading equipment 21 and the lower loading / unloading equipment 31 are conveying devices, such as conveyors, and more specifically, belt conveyors. In particular, the loading / unloading transverse section is located above the upper loading / unloading equipment 21, which enables the heavy object 5 to move at a speed higher than that of the conveyor chain 4 so that the suspended part of the heavy object is disengaged from the hook 44.

[0033] The basic working process of this system is as follows. Figure 1 As shown, for the energy storage process of lifting heavy objects, the conveyor chain 4 is driven by the sprocket to press... Figure 1 The device rotates in the direction of the middle arrow, consuming electrical energy. The heavy objects 5 stored in the lower compartment 32 are transported to the lower compartment loading and unloading equipment 31. The heavy objects 5 are then transported one by one on the lower compartment loading and unloading equipment 31 to a position near the lower end of the conveyor chain 4. The lower end of the conveyor chain 4 is located below the lower compartment loading and unloading equipment 31. As the conveyor chain 4 moves, the hooks 44 on the conveyor chain 4 move upwards, causing the suspended part of the heavy object 5 to engage with the hook 44 and be locked. The heavy objects 5 are then lifted one by one, concentrating on the rising side of the conveyor chain 4 (right side in the figure). This process transports the heavy objects from a low altitude to a high altitude. During the movement of the heavy objects 5 along the conveyor chain 4, the heavy objects 5 will undergo a change of direction, for example, from vertical to horizontal in the illustrated embodiment. Finally, at high altitude, the heavy object 5 is suspended in the transverse section of the loading and unloading system and moves directly above the upper loading and unloading equipment 21. At this time, the operating speed of the upper loading and unloading equipment 21 is set higher than the transverse operating speed of the conveyor chain 4. Due to the friction between the heavy object 5 and the upper loading and unloading equipment 21 or the force provided by other auxiliary structures, the moving speed of the heavy object 5 will be faster than the speed of the hook 44 on the conveyor chain 4, thus achieving automatic unhooking. After unhooking, the heavy object 5 will continue to be transported to the upper warehouse 22 for storage.

[0034] Specifically, in some embodiments, the automatic unhooking process involves the hook 44 being fixed relative to the links of the conveyor chain 4. In the vertical heavy-load conveying section, the U-shaped structure of the hook 44 is vertical with its opening facing upwards, thus stably suspending the heavy object 5. After turning to the loading / unloading transverse section, the U-shaped structure of the hook 44 also becomes transverse, with its opening facing forward in the conveying direction (to the right in the figure). The loading / unloading transverse section is basically parallel to the upper loading / unloading equipment 21, and the heavy object 5 can be released from the opening of the hook 44 by accelerating its movement. In other embodiments, the hook 44 is rotatably connected to the links of the conveyor chain 4. In the vertical heavy-load conveying section, the hook 44 is open upwards. After turning to the loading / unloading transverse section, the hook 44 is controlled to rotate so that its opening faces forward. This control is, for example, driven by a motor, or has a mechanical linkage mechanism with the sprocket, or may be obstructed or pushed by other components at high altitudes to achieve the desired effect. For example, in some other embodiments, the heavy object conveying section is inclined, so that the heavy object 5 is lifted during the movement and then detaches from the upward or obliquely upward opening of the hook 44.

[0035] During the discharge process of the descending heavy object, the conveyor chain 4, under the influence of the gravity of the heavy object 5, moves in accordance with... Figure 1 Rotating in the opposite direction of the arrow, the conveyor chain 4 drives the sprocket, which in turn drives the generator connected to the sprocket to generate electricity. The descent of the heavy object 5 remains on the right side of the conveyor chain 4. In high-altitude areas, the heavy object 5 is driven on the upper loading / unloading equipment 21 in the opposite manner to the aforementioned process, thereby connecting to the hook 44 of the conveyor chain 4. More specifically, for example, when the first few heavy objects 5 are loaded onto the conveyor chain 4, the conveyor chain 4 and the upper loading / unloading equipment 21 are controlled to run at the same speed. After the right side of the conveyor chain 4 is fully loaded with heavy objects 5, its total load capacity will remain basically stable, thus enabling uniform speed operation and continuous discharge under gravity; or, the conveyor chain 4 is always kept in a state where the heavy object 5 is suspended in the heavy object conveying section, thereby enabling a faster start to the uniform speed discharge process. After being transported to a lower altitude, the heavy object 5 falls onto the lower loading / unloading equipment 31, and the hook 44 on the conveyor chain 4 continues to descend, causing the heavy object 5 to naturally detach from the opening of the hook 44. After uncoupling, the heavy object 5 will continue to be transported to the lower compartment 32 for storage.

[0036] In a preferred embodiment, there are two horizontally arranged conveyor chains 4 that can operate synchronously, with a gap between them. The upper loading / unloading device 21 and the lower loading / unloading device 31 are both located between the two conveyor chains 4. There are two horizontally arranged hooks 44, which can be located on the inner or outer side of the two conveyor chains 4. For example, the two conveyor chains 4 are connected by a horizontal rod, and the hooks 44 are set on the rod.

[0037] Please also refer to Figures 2 to 4, the weight 5 is a block, for example a cuboid, and the weight suspension part is for example a horizontal bar 51 arranged on the weight 5, the horizontal bar 51 being exposed at both ends of the weight 5 to be suspended by the hooks 44, so that the combination of the two conveying chains 4 and the two hooks 44 at each suspension position can ensure stable suspension effect. Further preferably, a horizontal through hole is arranged at a position above the center of gravity of the weight 5, the horizontal bar 51 passes through the through hole of the weight 5, and the horizontal bar 51 is rotationally connected to the weight 5 through a bearing 52. The horizontal bar 51 is arranged as a rotatable shaft at a position above the center of gravity of the weight 5, so that the weight 5 can still be kept in an upright state after the direction of the weight 5 moving on the conveying chain 4 is changed. More specifically, for example, the weight 5 is standardized, and the weight of each weight block can be set to 0.5t-15t, and the total weight is related to the running capacity, running speed and total time of energy storage and discharge of the system; the single weight, quantity and vertical height difference of the weight can be flexibly designed and adjusted according to engineering needs, so as to configure the required installed capacity of the project.

[0038] For the automatic unhooking process of the weight 5 on the upper bin loading and unloading device 21, in some embodiments, the sizes and positional relationships of the loading and unloading transverse section of the conveying chain 4, the hooks 44, the weight 5 and the upper bin loading and unloading device 21 are set so that the weight 5 can fall on the upper bin loading and unloading device 21 instead of being suspended or hanging, and the friction between the weight 5 and the surface (such as the conveying belt) of the upper bin loading and unloading device 21 can push the weight 5 to achieve the desired effect. In the preferred embodiment shown in the figure, the upper bin loading and unloading device 21 is provided with a stop block 211 for pushing the weight 5, for example, the surface of the conveying belt is provided with a protruding stop block 211, which as an auxiliary structure can push the weight 5 from behind to move forward quickly and avoid the weight 5 from slipping on the upper bin loading and unloading device 21, so as to realize the smooth unhooking of the weight 5.

[0039] The hooks 44 are connected to the side surface of the conveying chain 4 through a hook connecting piece, for example a rod, and the hooks 44 are connected to the side surface of the chain link of the conveying chain 4 through the rod, so that the hooks 44, the conveying chain 4 and each sprocket are not in the same vertical plane, ensuring that the hooks 44 do not interfere with the conveying chain 4 and each sprocket. Similarly, the conveying chain 4 and the upper bin loading and unloading device 21 and the lower bin loading and unloading device 31 are not in the same vertical plane, and the weight 5 is conveyed on the upper bin loading and unloading device 21 and the lower bin loading and unloading device 31, and the weight 5 corresponds to the position of the hooks 44.

[0040] Please refer to Figure 6In the preferred embodiment, the hook 44 comprises a hook body 441 and an auxiliary locking segment 442. The hook body 441 is fixedly connected to the side of the conveying chain 4 through a hook connecting member. The hook body 441 forms a U-shaped structure protruding out of the conveying chain 4, in other words, the U-shaped structure is located outside the plane of the conveying chain 4. Specifically, the hook body 441 itself is U-shaped or the hook body 441 and the conveying chain 4 or the hook connecting member form a U-shaped structure, the two sides of the opening of the U-shaped structure are substantially parallel, and the U-shaped structure can allow the crossbar 51 on the weight 5 to enter and exit. The upper part of the side of the U-shaped structure of the hook body 441 away from the conveying chain 4 is rotationally connected to the middle part of the auxiliary locking segment 442, and the auxiliary locking segment 442 is curved towards the inside of the U-shaped structure, for example, in an arc shape. Thus, in the state shown in the figure, due to the gravity of the weight 5, the lower end of the auxiliary locking segment 442 is pressed, and the upper end forms a segment that is curved inward with respect to the opening of the U-shaped structure, thereby playing a locking and preventing the weight 5 from falling out. When the hook 44 rotates (for example, 90° clockwise in the figure), the auxiliary locking segment 442 can still play a locking and preventing role. Further, when the crossbar 51 of the weight 5 moves towards the direction of the opening of the U-shaped structure, the upper end of the auxiliary locking segment 442 is pushed to rotate, and thus the weight 5 can be smoothly unhooked. When the hook 44 is empty, because the previous crossbar 51 pushed the auxiliary locking segment 442 when it moved out, or the auxiliary locking segment 442 has a reset mechanism, the opening of the U-shaped structure of the hook 44 can be open, and thus the crossbar 51 can enter the U-shaped structure of the hook 44. Figure 6

[0041] The sprockets are connected with power generation and motor devices to achieve the required energy storage and discharge process. For example, the top sprocket 41 is connected with power generation and motor devices, and in the energy storage process, the top sprocket 41 is the driving sprocket, and the remaining sprockets are driven sprockets. The power generation and motor devices are generators and motors connected in transmission with the top sprocket 41, or the power generation and motor devices are motor-generator integrated machines connected in transmission with the top sprocket 41. In the embodiment, the power generation and motor devices are connected with the power grid.

[0042] Please refer to Figure 1 The redirecting sprocket 43 preferably comprises a first redirecting sprocket 431 and a second redirecting sprocket 432, the first redirecting sprocket 431 is located on the inside of the ring of the conveying chain 4, and the second redirecting sprocket 432 is located on the outside of the ring of the conveying chain 4. Thus, the conveying chain 4 is limited to an L-shaped structure, the transmission is stable and accurate, and the conveying chain 4 has sufficient load capacity. The bottom sprocket 42 is connected with a tensioning device 6, for example, the tensioning device 6 can finely adjust the position of the bottom sprocket 42, thereby facilitating the installation of the conveying chain 4 and the adjustment of the tension of the conveying chain 4 after installation to achieve tensioning.

[0043] ​As a more specific supplement, the upper bin loading and unloading device 21 is located between the upper bin 22 and the heavy object conveying channel 1, and the upper bin conveying device 23 is arranged between the upper bin 22 and the upper bin loading and unloading device 21; the lower bin loading and unloading device 31 is located between the lower bin 32 and the heavy object conveying channel 1, and the lower bin conveying device 33 is arranged between the lower bin 32 and the lower bin loading and unloading device 31. The upper bin conveying device 23 and the lower bin conveying device 33 are, for example, transport vehicles and / or conveyors, which are used to convey the heavy object 5 between the upper and lower bins (i.e. storage positions) and the upper and lower bin loading and unloading devices (i.e. loading and unloading positions).

[0044] It is conceivable that the application scenarios of the present scheme are various, and can be implemented in any case with height difference, including but not limited to vertical shafts. For example, the present scheme can be erected in the middle of two buildings with height difference, or applied to a mountain slope with a certain inclination angle or an underground inclined shaft. For example Figure 5 In the embodiment shown, the heavy object conveying channel 1 is inclined, and the upper bin and the lower bin are located on different sides of the heavy object conveying channel 1, and the present scheme can also be used. Optionally, in order to be more suitable for the slope scene, a redirection sprocket and a horizontal section are also arranged at the low altitude, so as to realize the loading and unloading process, and the bottom sprocket 42 does not need to be arranged below the lower bin loading and unloading device 31, but similar to the high altitude side, the horizontal section at the low altitude is located above the lower bin loading and unloading device 31.

[0045] In summary, the chain drive of the sustainable discharge gravity energy storage system from the electric power engineering application angle, the traditional gravity energy storage of single large volume weight is split into standard small weight, and the automatic loading, unhooking mode is designed, the chain is uniformly, continuously and approximately constant weight in the process of lifting and descending under the influence of the gravity of the weight, thereby providing continuous and stable output current for the power grid. The power transmission component of the chain drive of the sustainable discharge gravity energy storage system adopts a chain, more preferably double chains, the structure of the chain is more difficult to slip than the steel wire rope, and the positioning on the unit length is more accurate, and the length position of the chain can be more accurately controlled under the action of the tensioning device; and due to the accurate positioning characteristics, the position synchronization of the two chains during operation can be met, the design of the double chain and the synchronous arrangement of the suspension device (hook) on both sides greatly improves the stability and safety of the weight during lifting and descending. The design and arrangement of the new type of suspension device used in the chain drive of the sustainable discharge gravity energy storage system can meet the automatic hooking and unhooking function of the weight, and the double chain or similar structure can avoid the contact between the suspension device and the driving wheel and each sprocket, improve the safety of the system, and reduce the design difficulty of the sprocket and the auxiliary structure. In the chain drive of the sustainable discharge gravity energy storage system, the weight preferably has a horizontal shaft (horizontal rod) inserted in the upper half, when being lifted by the hook, the horizontal rod is above the center of gravity of the weight, so that the weight can always maintain a stable state with the center of gravity downward during horizontal and vertical movement, improving the stability and anti-interference of the weight at different positions, reducing the risk of weight dumping, rollover and unhooking, and greatly improving the safety of system operation. The chain drive of the sustainable discharge gravity energy storage system is relatively simple in complexity and low in technical difficulty, which is easy to implement and convenient for construction.

Claims

1. A chain-driven sustainable discharge gravity energy storage system, characterized in that, It includes a vertical or inclined heavy object conveying channel (1), with an upper warehouse loading and unloading equipment (21) and an upper warehouse (22) installed on the high-altitude side of the heavy object conveying channel (1), and a lower warehouse loading and unloading equipment (31) and a lower warehouse (32) installed on the low-altitude side of the heavy object conveying channel (1). It also includes a ring-shaped conveyor chain (4), with a top sprocket (41) and a bottom sprocket (42) respectively connected to the two ends of the conveyor chain (4) on the high-altitude side and the low-altitude side. A redirecting sprocket (43) is also connected to the conveyor chain (4) near the top sprocket (41) on the high-altitude side. The conveyor chain (4) forms a heavy-load conveying section between the redirecting sprocket (43) and the bottom sprocket (42). The heavy-load conveying section is set along the heavy-load conveying channel (1). The conveyor chain (4) forms a loading and unloading transverse section between the top sprocket (41) and the redirecting sprocket (43). Multiple hooks (44) are evenly distributed on the conveyor chain (4). It also includes multiple weights (5), and the weights (5) are provided with a weight suspension part that matches the hook (44); Both the upper loading and unloading equipment (21) and the lower loading and unloading equipment (31) are conveying devices; the loading and unloading transverse section is located above the upper loading and unloading equipment (21), and the upper loading and unloading equipment (21) can make the heavy object (5) move at a speed higher than that of the conveying chain (4) so ​​that the suspended part of the heavy object is disengaged from the hook (44).

2. The chain-driven sustainable discharge gravity energy storage system according to claim 1, characterized in that, The conveyor chains (4) are two horizontally arranged parallel chains that can operate synchronously, with a gap between the two conveyor chains (4); the upper warehouse loading and unloading equipment (21) and the lower warehouse loading and unloading equipment (31) are both located between the two conveyor chains (4).

3. The chain-driven sustainable discharge gravity energy storage system according to claim 2, characterized in that, The hooks (44) are two horizontally arranged side by side; the weight suspension part is a horizontal bar (51) set on the weight (5), with both ends of the horizontal bar (51) protruding from both sides of the weight (5) for the hooks (44) to suspend.

4. The chain-driven sustainable discharge gravity energy storage system according to claim 3, characterized in that, The weight (5) has a horizontal through hole above its center of gravity. The crossbar (51) passes through the through hole of the weight (5) and is rotatably connected to the weight (5) through a bearing (52).

5. The chain-driven sustainable discharge gravity energy storage system according to claim 4, characterized in that, The hook (44) includes a hook body (441) and an auxiliary locking section (442); the hook body (441) is fixedly connected to the side of the conveyor chain (4) by a hook connector, and the hook body (441) forms a U-shaped structure protruding from the conveyor chain (4); the upper part of the side of the U-shape of the hook body (441) away from the conveyor chain (4) is rotatably connected to the middle part of the auxiliary locking section (442), and the auxiliary locking section (442) is bent toward the inside of the U-shape.

6. The chain-driven sustainable discharge gravity energy storage system according to any one of claims 1-5, characterized in that, The upper loading and unloading equipment (21) is equipped with a stop (211) for pushing heavy objects (5).

7. The chain-driven sustainable discharge gravity energy storage system according to any one of claims 1-5, characterized in that, The top sprocket (41) is connected to a generator.

8. The chain-driven sustainable discharge gravity energy storage system according to any one of claims 1-5, characterized in that, The redirecting sprocket (43) includes a first redirecting sprocket (431) and a second redirecting sprocket (432). The first redirecting sprocket (431) is located inside the annulus of the conveyor chain (4), and the second redirecting sprocket (432) is located outside the annulus of the conveyor chain (4).

9. The chain-driven sustainable discharge gravity energy storage system according to any one of claims 1-5, characterized in that, The bottom sprocket (42) is connected to a tensioning device (6).

10. The chain-driven sustainable discharge gravity energy storage system according to any one of claims 1-5, characterized in that, The upper warehouse loading and unloading equipment (21) is located between the upper warehouse (22) and the heavy object conveying channel (1), and an upper warehouse conveying equipment (23) is provided between the upper warehouse (22) and the upper warehouse loading and unloading equipment (21); the lower warehouse loading and unloading equipment (31) is located between the lower warehouse (32) and the heavy object conveying channel (1), and a lower warehouse conveying equipment (33) is provided between the lower warehouse (32) and the lower warehouse loading and unloading equipment (31).

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