Suspension cable rail type gravity energy storage system

Abstract

The invention relates to a suspension cable rail type gravity energy storage system, and relates to the technical field of gravity energy storage. Comprising two cable frames installed on the upper portion and the lower portion of a slope body, a bearing cable is fixed between the two cable frames, a rail is hoisted through the bearing cable, an installation frame and a buffer frame are fixedly installed on the sides, away from each other, of the two cable frames respectively, and the rail smoothly extends to the installation frame and the buffer frame; a steel cable winch is rotationally installed on each installation frame, an annular steel cable is wound between the two steel cable winches, lifting hook assemblies are evenly installed on the steel cable, and automatic unhooking and hooking of the heavy object trolley are achieved through the lifting hook assemblies. According to the invention, the suspension cable is arranged to construct the track for connecting the upper and lower parts of the slope body, so that the heavy trolley can stably and safely convert gravitational potential energy and electric energy, and the problems of slipping caused by independent use of a cableway and safety in a severe environment are solved.

Description

Technical Field

[0001] The invention relates to the technical field of gravity energy storage, and in particular to a cable-suspended track type gravity energy storage system. Background Art

[0002] Gravity energy storage technology is a mechanical energy storage method. Its basic principle is to store energy by gravity potential energy by lifting the energy storage medium to a certain height, and release the gravity potential energy to convert it into electricity when needed; store the unstable electric energy generated by wind and solar power and convert it into gravity potential energy;

[0003] When stable power supply is needed, the gravitational potential energy can be released and converted into electrical energy to obtain stable and continuous electrical energy. This is of great significance in places where power transmission lines are difficult to build. In addition, for enterprises with high power consumption, the price difference between valley and peak electricity consumption can be used to store and reuse energy, which can greatly reduce the power consumption pressure of the entire power grid during peak hours and greatly reduce the production costs of enterprises. However, when lifting heavy objects, the existing gravity lifting devices are easily affected by weather (such as strong winds) in the air due to the large mass of the heavy objects, and the safety is relatively low. It is also difficult to ensure that the heavy objects do not slip on the cableway. To this end, we provide a suspension track gravity energy storage system. Summary of the invention

[0004] The object of the present invention is to provide a cable-track type gravity energy storage system.

[0005] The technical problems solved by the present invention are:

[0006] (1) How to construct a track connecting the upper and lower parts of the slope by setting up cables to allow the heavy-weight trolley to reciprocate, realize the conversion of gravitational potential energy and electrical energy, and improve the safety and stability of the entire system;

[0007] (2) How to move and store multiple heavy object carts by setting up a buffer rack and a buffer conveyor assembly so as to subsequently continuously convert electrical energy and potential energy;

[0008] (3) How to set up a hook assembly to switch the opening and closing states of the hook body according to whether the hook body is in a force-generating working state, and realize automatic unhooking through a simple and compact structure.

[0009] The present invention can be implemented by the following technical scheme: a suspended cable track type gravity energy storage system, comprising two cable racks installed on the upper and lower sides of a slope, a load-bearing cable is fixed between the two cable racks, and a track consisting of two parallel steel rails is suspended through auxiliary cables evenly arranged on the load-bearing cable, a mounting frame and a buffer frame are fixedly installed on the sides of the two cable racks away from each other, and the track smoothly extends to the mounting frame and the buffer frame;

[0010] A steel cable winch is rotatably mounted on each mounting frame, a ring-shaped steel cable is wound between the two steel cable winches, a hook assembly is mounted on the steel cable through a uniformly mounted cable gripper, and the automatic unhooking of the heavy object trolley is achieved through the hook assembly;

[0011] One of the two cable winches is connected to a power motor through a clutch, and the other is connected to a generator through a clutch. At the same time, only one of the two motors is working.

[0012] A further technical improvement of the present invention is that a saddle bridge is arranged between the cable rack and the adjacent mounting frame, and a plurality of rollers are rotatably arranged on the saddle bridge, so that the extension direction of the steel cable has a smooth transition.

[0013] A further technical improvement of the present invention is that a buffer conveying assembly is symmetrically and horizontally fixedly installed above the track on the buffer rack, and the buffer conveying assembly includes two horizontally arranged conveying mounting bars, and a number of buffer blocks are evenly slidably installed in each conveying mounting bar. A conveying wheel is coaxially installed at the bottom position of the buffer block, and each conveying wheel can achieve synchronous rotation through a transmission assembly to convey and move the heavy object trolley entering the track on the buffer rack.

[0014] A further technical improvement of the present invention is that two buffer springs are symmetrically arranged between each buffer block and the corresponding conveying mounting bar side wall, and the two ends of the buffer spring are respectively abutted against the conveying mounting bar and the buffer block; the conveying mounting platform is provided with a make way groove at the position below the corresponding buffer block to facilitate its movement.

[0015] A further technical improvement of the present invention is that: the transmission assembly includes a transmission shaft rotatably mounted above the buffer block through a bearing support, and a transmission bevel gear 2 is coaxially fixed to one end of the transmission shaft, which meshes with a transmission bevel gear 1 located on the top of the buffer block and coaxially fixed to the conveying wheel;

[0016] A driving shaft that rotates coaxially with the transmission shaft is arranged above the buffer block. The driving shaft rotates relative to the conveying installation bar, and the end portion slides with the transmission shaft spline. A worm gear is fixed to one end of the driving shaft, and a worm is also rotatably connected in the conveying installation bar, and the worm gear and the worm gear are meshed for transmission.

[0017] A further technical improvement of the present invention is that the hook assembly includes a fixing bar fixed to the rope gripper, a rectangular slider is vertically slidably installed in the fixing bar, a connecting rod penetrating the fixing bar is vertically fixed to the bottom of the rectangular slider, a hook body is fixed to the bottom of the connecting rod, and the hook body is also equipped with an anti-slip bar that can switch the opening and closing state of the hook body according to whether the connecting rod is extended or not.

[0018] A further technical improvement of the present invention is that a sliding rod is fixed on one side of the center of the rotating axis of the anti-slip bar, a sliding sleeve is slidably arranged on the outer periphery of the sliding rod, a vertical rod is hingedly arranged on the top of the sliding sleeve and slides vertically with the fixed bar, and the top of the vertical rod is connected to the top of the rectangular slider through a pull rope and a fixed pulley group.

[0019] A further technical improvement of the present invention is that the slide bar and the anti-slip stop bar form a fixed angle and rotate synchronously, and the rotation centers of the two are matched with the connecting rod through a torsion spring.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention constructs a track connecting the upper and lower parts of the slope by arranging a suspension cable, so that the heavy-weight trolley can stably and safely convert gravitational potential energy into electric energy, thereby solving the problems of slipping when using the cableway alone and safety in harsh environments; in addition, a buffer frame is arranged to provide a buffer temporary storage area for the heavy-weight trolley, so as to facilitate continuous conversion of electric energy and gravitational potential energy when needed, thereby improving the continuity and stability of energy conversion of the entire system; the stress state of the hook body in the hook assembly is used to realize the automatic opening and closing of the anti-detachment bar, thereby automatically completing the unhooking, and the entire structure is simple, compact, and easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0023] Figure 1 It is a schematic diagram of the overall external structure of the present invention;

[0024] Figure 2 It is a top view schematic diagram of the steel cable installation state of the present invention;

[0025] Figure 3 It is a three-dimensional schematic diagram of the installation state of the steel cable of the present invention;

[0026] Figure 4 It is a three-dimensional schematic diagram of the internal structure of the buffer conveying assembly of the present invention;

[0027] Figure 5 It is a schematic diagram of the transmission assembly structure of the buffer conveying assembly of the present invention;

[0028] Figure 6 It is a schematic diagram of the connection structure of the hook assembly of the present invention.

[0029] In the figure: 1. cable rack; 2. mounting frame; 3. buffer frame; 4. load-bearing cable; 5. auxiliary cable; 6. rail; 7. saddle bridge; 8. cable winch; 9. motor; 10. buffer conveying assembly; 11. cable; 12. cable gripper; 13. fixing bar; 14. rectangular slider; 15. connecting rod; 16. load-bearing spring; 17. hook body; 18. anti-slip bar; 19. torsion spring; 20. slide bar; 21. sleeve; 22. vertical rod; 23. gravity trolley; 701. roller; 1001. conveying mounting bar; 1002. buffer block; 1003. conveying wheel; 1004. transmission bevel gear one; 1005. bearing support; 1006. transmission bevel gear two; 1007. transmission shaft; 1008. drive shaft; 1009. worm wheel; 1010. worm; 1011. buffer spring. DETAILED DESCRIPTION

[0030] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0031] See also Figure 1-6 As shown, a cable-track gravity energy storage system comprises cable racks 1 respectively installed on and under the slope, two parallel load-bearing cables 4 are fixed between the tops of the two cable racks 1, a plurality of auxiliary cables 5 are evenly arranged below each load-bearing cable 4, two corresponding auxiliary cables 5 are jointly suspended with a sleeper, so that two rails 6 are fixedly installed in parallel on the plurality of even sleepers, and the two rails 6 are relatively fixed to the cable racks 1;

[0032] Each cable rack 1 is provided with a mounting frame 2 and a buffer frame 3 fixed to the ground on one side away from the load-bearing cable 4, and the rail 6 smoothly transitions to a horizontal state and extends and is fixedly installed on the mounting frame 2 and the buffer frame 3;

[0033] A motor 9 is fixedly installed on the top of the mounting frame 2, and a steel cable winch 8 is rotatably installed directly below the motor 9. A saddle bridge 7 is fixedly installed side by side between the cable frame 1 and the mounting frame 2, and a group of rollers 701 are rotatably installed on one side of the saddle bridge 7; a steel cable 11 is wound around the steel cable winch 8, and the steel cable 11 extends parallel to the extension direction of the steel rail 6 through the roller 701 on the saddle bridge 7, and is wound on another steel cable winch 8, so as to form a ring structure between the two steel cable winches 8, and one side of the steel cable 11 passes through the middle of the two steel rails 6. A plurality of rope grippers 12 are evenly installed on the outer periphery of the steel cable 11, and a hook assembly is fixedly installed below each rope gripper 12;

[0034] The buffer rack 3 is located just above the rail 6 and is horizontally fixed with a buffer conveying assembly 10. When the gravity trolley 23 on the rail 6 is unhooked, it continues to move to the buffer rack 3 under the action of inertia and cooperates with the buffer conveying assembly 10 to complete the subsequent displacement. The gravity trolley 23 stops on the buffer rack 3 for storage;

[0035] It should be noted that the motors 9 on the mounting frames 2 located on the upper and lower sides of the slope are respectively a generator and a motor providing power, and the specific mounting positions of the two can be replaced;

[0036] Furthermore, the hook assembly includes a fixing bar 13 fixed to the cable gripper 12, a rectangular slider 14 is vertically slidably installed inside the fixing bar 13, a connecting rod 15 penetrating the fixing bar 13 is vertically fixed to the bottom of the rectangular slider 14, and a bearing spring 16 is sleeved on the outer side of one end of the connecting rod 15 located in the fixing bar 13; a hook body 17 is fixed to the bottom of the connecting rod 15, and an anti-slipping blocking bar 18 is rotatably arranged on the top of the hook body 17 for controlling the opening and closing state of the hook body 17, and the anti-slipping blocking bar 18 A slide bar 20 is fixed on one side of the rotation center, and the slide bar 20 forms a fixed angle with the anti-slip block bar 18 and can rotate synchronously. The rotation center cooperates with the connecting rod 15 through a torsion spring 19; a sliding sleeve 21 is slidably provided on the outer periphery of the slide bar 20, and a vertical rod 22 is hingedly provided on the top of the sliding sleeve 21. The top of the vertical rod 22 is slidably provided with the fixed bar 13 and its top is connected to the top of the rectangular slider 14 through a fixed pulley block and a pull rope; the hook assembly drags and releases the gravity trolley 23 through the hook body 17;

[0037] More specifically, the buffer conveyor assembly 10 includes two conveyor mounting bars 1001 horizontally and symmetrically fixed on the buffer frame 3, a plurality of buffer blocks 1002 are evenly installed in each conveyor mounting bar 1001, and two buffer springs 1011 are symmetrically arranged on one side of each buffer block 1002, the two ends of the buffer spring 1011 are respectively abutted against the corresponding buffer block 1002 and the conveyor mounting bar 1001, and the buffer block 1002 is slidably connected relative to the conveyor mounting bar 1001; a rotating shaft is vertically penetrated and rotatably arranged on the buffer block 1002, a conveyor wheel 1003 is coaxially fixed to the bottom of the rotating shaft, and a transmission bevel gear 1004 is coaxially fixed to the top of the rotating shaft, and a clearance groove is provided at the bottom of the conveyor mounting bar 1001 to facilitate the sliding of the rotating shaft relative to the conveyor mounting bar 1001;

[0038] A bearing support 1005 is installed on the top of the buffer block 1002, and a transmission shaft 1007 is horizontally rotatably installed through the bearing support 1005. A transmission bevel gear 1006 is coaxially fixed at the end of the transmission shaft 1007, and the transmission bevel gear 1004 is meshed with the transmission bevel gear 1006 for transmission; a support is fixed to the top inner wall of the conveying installation bar 1001, and a driving shaft 1008 is rotatably installed in the support. One end of the driving shaft 1008 is transmitted by spline cooperation with the transmission shaft 1007, and a worm gear 1009 is coaxially fixed on the other end of the driving shaft 1008. A worm 1010 is also rotatably connected in the conveying installation bar 1001, and the worm 1010 is meshed with the worm wheel 1009 for transmission. The worm 1010 is driven by a rotating motor (not shown in the figure).

[0039] It should be noted that a clutch is provided between the power motor, the generator and the corresponding steel cable winch 8. When one of the motors is working, the other one is released from the corresponding steel cable winch 8; specifically, when the gravity trolley 23 converts gravitational potential energy into electrical energy, the generator works, and at this time the cooperation relationship between the power motor and the steel cable winch 8 is released; when the gravity trolley 23 converts electrical energy into gravitational potential energy, the power motor works, and at this time the cooperation relationship between the generator and the steel cable winch 8 is released.

[0040] The energy storage system of the present invention is divided into the following two situations when working:

[0041] (1) When it is necessary to lift the gravity trolley 23 from the bottom of the slope to the top of the slope:

[0042] The driving power motor, the steel cable 11 located directly above the track composed of two steel rails 6, runs from bottom to top, and the gravity trolley 23 stored on the buffer rack 3 is moved to the mounting rack 2 through the buffer conveying assembly 10, so that the hook body 17 in the hook assembly combines with the gravity trolley 23 to pull the gravity trolley 23, so that it is lifted along the track to the mounting rack 2 on the slope, and the gravity trolley 23 is automatically unhooked from the hook assembly, and moves to the buffer rack 3 under the action of inertia, and is received by the buffer conveying assembly 10 and moved and stored on the buffer rack 3;

[0043] (2) When the gravity cart 23 converts gravitational potential energy into electrical energy:

[0044] The buffer conveying assembly 10 moves the gravity trolley 23 on the slope to the mounting frame 2 on the slope, and then combines with the hook assembly. Under the inertia of the gravity trolley 23, the steel cable 11 on the track is driven to move from top to bottom. The gravity trolley 23 slides downward from the track to convert the gravity potential energy into electrical energy. The gravity trolley 23 slides to the mounting frame 2 under the slope and unhooks and enters the buffer frame 3, and is received, moved and stored by the buffer conveying assembly 10.

[0045] Specifically, when the buffer conveying assembly 10 is working, after the gravity trolley 23 enters the buffer frame 3, the conveying wheel 1003 contacts the side wall of the gravity trolley 23 to convey it. In order to ensure the squeezing force between the conveying wheel 1003 and the gravity trolley 23, the buffer spring 1011 is in a compressed state. Although the buffer plate 1002 moves during this process, under the spline cooperation of the transmission shaft 1007 and the drive shaft 1008, the worm wheel 1009 and the worm 1010, and the transmission bevel gear 1 1004 and the transmission bevel gear 2 1006 are always kept in a transmission cooperation state;

[0046] When the hook assembly and the gravity trolley 23 are to be combined, the hook assembly is in a natural state, and the anti-slip bar 18 is in an open state under the action of the torsion spring 19, and automatically combines with the hook of the gravity trolley 23; when a pulling force is generated, the connecting rod 15 extends outward, and the rectangular slider 14 moves accordingly, thereby driving the vertical rod 22 to move upward through the pull rope, and the sliding sleeve 21 at its end slides along the sliding rod 20, thereby driving 18 to rotate to a closed state; when the gravity trolley 23 returns to a horizontal state, the hook assembly returns to a natural state, and the anti-slip bar 18 switches to an open state under the action of the torsion spring 19, and after passing the steel cable winch 8, the gravity trolley 23 completes the unhooking under the action of inertia.

[0047] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A cable-track gravity energy storage system, characterized in that: It comprises two cable racks (1) installed on the upper and lower sides of the slope, a load-bearing cable (4) is fixed between the two cable racks (1), and a track consisting of two parallel steel rails (6) is hoisted through auxiliary cables (5) evenly arranged on the load-bearing cable (5), a mounting frame (2) and a buffer frame (3) are fixedly installed on the sides of the two cable racks (1) away from each other, and the track smoothly extends to the mounting frame (2) and the buffer frame (3); A steel cable winch (8) is rotatably mounted on each of the mounting frames (2), a ring-shaped steel cable (11) is wound between the two steel cable winches (8), a hook assembly is mounted on the steel cable (11) via a uniformly mounted cable gripper (12), and the automatic unhooking of the heavy object trolley (23) is achieved via the hook assembly; One of the two steel cable winches (8) is connected to a power motor via a clutch, and the other is connected to a generator via a clutch. At the same time, only one of the two motors is working.

2. A cable-track gravity energy storage system according to claim 1, characterized in that: A saddle bridge (7) is arranged between the cable rack (1) and the adjacent mounting frame (2), and a plurality of rollers (701) are rotatably arranged on the saddle bridge (7), thereby making the extension direction of the steel cable (11) smoothly transition.

3. A cable-track gravity energy storage system according to claim 1, characterized in that: A buffer conveying assembly (10) is symmetrically and horizontally fixedly installed above the track on the buffer frame (3), and the buffer conveying assembly (10) comprises two horizontally arranged conveying installation bars (1001), and a plurality of buffer blocks (1002) are evenly slidably installed in each conveying installation bar (1001), and a conveying wheel (1003) is coaxially rotatably installed at the bottom position of the buffer block (1002), and each conveying wheel (1003) is synchronously rotated by a transmission assembly to convey and move a heavy object trolley (23) entering the track on the buffer frame (3).

4. A cable-track gravity energy storage system according to claim 3, characterized in that: Two buffer springs (1011) are symmetrically arranged between each buffer block (1002) and the side wall of the corresponding conveying installation bar (1001), and the two ends of the buffer spring (1011) are respectively in contact with the conveying installation bar (1001) and the buffer block (1002); and a clearance groove is provided on the conveying installation platform (1001) below the corresponding buffer block (1002) to facilitate its movement.

5. The cable-track gravity energy storage system according to claim 3, characterized in that: The transmission assembly comprises a transmission shaft (1007) rotatably mounted above the buffer block (1002) via a bearing support (1005); a transmission bevel gear 2 (1006) is coaxially fixed to one end of the transmission shaft (1007) and meshes with a transmission bevel gear 1 (1004) located at the top of the buffer block (1002) and coaxially fixed to the conveying wheel (1003); A driving shaft (1008) is arranged above the buffer block (1002) and rotates coaxially with the transmission shaft (1007). The driving shaft (1008) rotates relative to the conveying installation bar (1001), and the end of the driving shaft (1008) is spline-slidably matched with the transmission shaft (1007). A worm gear (1009) is fixed to one end of the driving shaft (1008), and a worm (1010) is also rotatably connected in the conveying installation bar (1001), and the worm gear (1010) and the worm gear (1009) are meshed for transmission.

6. The cable-track gravity energy storage system according to claim 1, characterized in that: The hook assembly comprises a fixing bar (13) fixed to a rope gripper (12), a rectangular slider (14) vertically slidably installed in the fixing bar (13), a connecting rod (15) penetrating the fixing bar (13) vertically fixed at the bottom of the rectangular slider (14), a hook body (17) fixed at the bottom of the connecting rod (15), and an anti-slip blocking bar (18) for switching the opening and closing state of the hook body (17) according to whether the connecting rod (15) is extended or not is installed on the hook body (17).

7. A cable-track gravity energy storage system according to claim 6, characterized in that: A slide bar (20) is fixed on one side of the rotation axis center of the anti-slip blocking bar (18), a slide sleeve (21) is slidably arranged on the outer periphery of the slide bar (20), a vertical rod (22) is hingedly arranged on the top of the slide sleeve (21) and vertically slides with the fixed bar (13), and the top of the vertical rod (22) is connected to the top of the rectangular sliding block (14) through a pull rope and a fixed pulley group.

8. A cable-track gravity energy storage system according to claim 7, characterized in that: The slide bar (20) and the anti-slip blocking bar (18) form a fixed angle and rotate synchronously, and the rotation centers of the two are matched with the connecting rod (15) through the torsion spring (19).

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