Gravity energy storage device for coal mine

Abstract

The invention relates to the technical field of gravity energy storage, in particular to a gravity energy storage device for a coal mine, which comprises a mine, a fixing frame mounted at the top of the mine, a fixed pulley mounted in the fixing frame, a lifting rope connected to the surface of the fixed pulley, a weight connected to one end, close to the mine, of the lifting rope, and a winding and unwinding wheel connected to the other end of the lifting rope. A generator motor is arranged at one end of the winding and unwinding wheel; the top end of the connecting block is inserted into the mounting sleeve in a sliding mode, when the limiting clamping block moves to the clamping groove, the limiting clamping block can be inserted into the clamping groove in a sliding mode under the action of the limiting spring, and then the connecting block is limited; and through the air cylinder connected to the top end of the mounting sleeve, the pulley frame is conveniently driven by the air cylinder to ascend and descend in the fixing frame, then the function of adjusting the mounting height of the fixed pulley according to the use requirement is achieved, and the practicability of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of gravity energy storage, and in particular to a gravity energy storage device used in a coal mine. Background Art

[0003] In the existing technology, abandoned coal mine shafts are used for gravity energy storage systems, which can be used for wind and photovoltaic power consumption or peak load regulation of power grids. Through the generator motor, gear transmission, hydraulic coupling and retractable reel in the gravity energy storage system, electrical energy can be converted into gravitational potential energy and stored. When releasing energy, the weight at one end of the lifting rope falls and drives the retractable reel to rotate, which is converted into electricity after passing through the hydraulic coupling, gear transmission and generator motor and transmitted to the power grid.

[0004] However, when the suspension rope in the gravity energy storage system is retracted and released through the fixed pulley, the installation height of the fixed pulley is usually fixed. It is difficult for the existing gravity energy storage device to adjust the installation height of the fixed pulley according to the use requirements, which reduces the practicality of the device. To this end, we propose a gravity energy storage device for coal mines. Summary of the invention

[0005] The purpose of the present invention is to provide a gravity energy storage device for coal mines to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A gravity energy storage device for a coal mine, comprising: a mine, a fixed frame is installed on the top of the mine, a fixed pulley is installed inside the fixed frame, a suspension rope is connected to the surface of the fixed pulley, a weight is connected to one end of the suspension rope close to the mine, a retractable reel is connected to the other end of the suspension rope, and a generator motor is arranged at one end of the retractable reel; The fixing frame is provided with a cylinder at the top end near the fixed pulley, the output end of the cylinder is connected with a mounting sleeve, the fixed pulley is provided with a connecting block at the top end near the mounting sleeve, the mounting sleeve and the connecting block are provided with a mounting hole and a connecting hole on one end surface respectively, and a mounting bolt is provided between the mounting hole and the connecting hole; A limit block is slidably mounted on one end of the connection block, one end of the limit block is connected to a limit spring, an abutment slope is provided on the top of the other end of the limit block, and a groove is provided on the surface of the mounting sleeve close to the limit block.

[0007] Preferably, the bottom end of the fixed frame is fixedly connected to a fixed base plate, the retractable reel is rotatably installed on the top of the fixed base plate, one end of the sling is wound around the retractable reel, and the fixed base plate is U-shaped, and a fixing pin is installed at the top edge of the fixed base plate.

[0008] Preferably, the cylinder is fixedly mounted on the top of the fixing frame, the output end of the cylinder passes through the fixing frame and is inserted into the interior of the fixing frame, and the mounting sleeve is fixedly mounted on the output end of the cylinder.

[0009] Preferably, the top end of the connecting block is slidably inserted into the mounting sleeve, the bottom end of the connecting block is fixedly connected to a pulley frame, the pulley frame is in an inverted U shape, and the rotating shafts at both ends of the fixed pulley are rotatably mounted on the inner side walls of the pulley frame.

[0010] Preferably, the mounting hole and the connecting hole are connected, one end of the mounting bolt slides through the mounting hole and the connecting hole, the mounting sleeve and the connecting block are fixedly connected by the mounting bolt, and a rubber pad is provided on the outer wall of one end of the connecting block close to the pulley frame, and the bottom end of the mounting sleeve and the pulley frame are tightly connected by the rubber pad.

[0011] Preferably, two limit blocks are symmetrically installed and are both T-shaped, and two limit grooves are correspondingly opened on the surface of the connecting block close to the two limit blocks, and a plurality of balls are rotatably installed on the top and bottom of one end of the two limit blocks close to the limit grooves.

[0012] Preferably, one ends of the two limit blocks are slidably installed in adjacent limit slots, the other ends of the two limit blocks slide out of the limit slots and are inserted into corresponding slots, and one ends of the two limit blocks close to the limit slots are fixedly connected to adjacent limit springs, and the other ends of the two limit springs are fixedly installed on the inner walls of the adjacent limit slots.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention enables the top end of the connecting block to be slidably inserted into the installing sleeve. When the limiting card block moves to the slot, the limiting card block can be slidably inserted into the slot under the action of the limiting spring, thereby limiting the connecting block. The installing sleeve and the connecting block can be conveniently fixedly connected by installing bolts through the installing holes and connecting holes on the surfaces of the installing sleeve and the connecting block. The cylinder connected to the top end of the installing sleeve can facilitate the cylinder to drive the pulley frame to rise and fall in the fixing frame, thereby realizing the function of adjusting the installation height of the fixed pulley according to the use requirements, thereby improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic top view of the overall structure of the present invention; Figure 2 It is a three-dimensional schematic diagram of the local structure of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle; Figure 4 It is a three-dimensional cross-sectional schematic diagram of the connection between the mounting sleeve and the connecting block of the present invention; Figure 5It is a schematic diagram of the explosion of the local structure of the present invention; Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point B in the middle.

[0015] In the figure: 1, mine; 2, lifting rope; 3, fixing frame; 4, fixing bottom plate; 5, fixing pin; 6, cylinder; 7, mounting sleeve; 8, mounting bolt; 9, mounting hole; 10, connecting block; 11, connecting hole; 12, rubber pad; 13, fixed pulley; 14, weight; 15, pulley frame; 16, retracting and unwinding reel; 17, generator motor; 18, limit block; 19, limit groove; 20, ball; 21, limit spring; 22, slot; 23, abutting inclined surface. DETAILED DESCRIPTION

[0016] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figures 1 to 6 The present invention provides a technical solution: a gravity energy storage device for a coal mine, comprising: a mine 1, a fixed frame 3 is installed on the top of the mine 1, a fixed pulley 13 is installed inside the fixed frame 3, a suspension rope 2 is connected to the surface of the fixed pulley 13, a weight 14 is connected to one end of the suspension rope 2 close to the mine 1, a retractable reel 16 is connected to the other end of the suspension rope 2, a generator motor 17 is arranged at one end of the retractable reel 16, and a gearbox and a hydraulic coupling are connected between the generator motor 17 and the retractable reel 16. When the device is working, when the weight 14 rises to the mine 1, the gearbox and the hydraulic coupling are connected. When the top of the lifting rope 2 is reached, the electrical energy can be converted into gravitational potential energy and stored. When the energy is released, the weight 14 at one end of the lifting rope 2 falls down to drive the take-up and unwinding wheel 16 to rotate, and then the rotational force of the take-up and unwinding wheel 16 is converted into electricity and transmitted to the power grid; the bottom end of the fixed frame 3 is fixedly connected to the fixed bottom plate 4, the take-up and unwinding wheel 16 is rotatably installed on the top of the fixed bottom plate 4, one end of the lifting rope 2 is wound around the take-up and unwinding wheel 16, and the fixed bottom plate 4 is U-shaped, and a fixing pin 5 is installed at the top edge of the fixed bottom plate 4, which is convenient for fixing the fixed bottom plate 4 to the ground around the mine 1 through the fixing pin 5.

[0018] A cylinder 6 is installed at the top of the fixed frame 3 near the fixed pulley 13, and a mounting sleeve 7 is connected to the output end of the cylinder 6. A connecting block 10 is installed at the top of the fixed pulley 13 near the mounting sleeve 7. A mounting hole 9 and a connecting hole 11 are respectively provided on one end surface of the mounting sleeve 7 and the connecting block 10, and a mounting bolt 8 is installed between the mounting hole 9 and the connecting hole 11; the cylinder 6 is fixedly installed at the top of the fixed frame 3, and the output end of the cylinder 6 passes through the fixed frame 3 and is inserted into the interior of the fixed frame 3, and the mounting sleeve 7 is fixedly installed on the output end of the cylinder 6, so that the mounting sleeve 7 can be driven to rise and fall by the cylinder 6. The top of the connecting block 10 is slidably inserted into the mounting sleeve 7, and the bottom of the connecting block 10 is fixedly connected with a pulley frame 15, which is in an inverted U shape. The rotating shafts at both ends of the fixed pulley 13 are rotatably mounted on the inner side walls of the pulley frame 15, so that the fixed pulley 13 rotates in the pulley frame 15, which is convenient for the suspension rope 2 to pass through the pulley frame 15 and be connected with the surface of the fixed pulley 13 in a rolling manner, thereby facilitating the lifting and lowering of the heavy object 14 by the retraction and release of the suspension rope 2. The mounting hole 9 and the connecting hole 11 are connected and communicated, and one end of the mounting bolt 8 slides through the mounting hole 9 and the connecting hole 11. The mounting sleeve 7 and the connecting block 10 are fixedly connected by the mounting bolt 8, and a rubber pad 12 is sleeved on the outer wall of one end of the connecting block 10 close to the pulley frame 15. The bottom end of the mounting sleeve 7 and the pulley frame 15 are tightly connected by the rubber pad 12, which is convenient for connecting the pulley frame 15 and the output end of the cylinder 6 by the mounting bolt 8.

[0019] A limit block 18 is slidably mounted on one end of the connection block 10, one end of the limit block 18 is connected to a limit spring 21, an abutting inclined surface 23 is provided on the top of the other end of the limit block 18, and a slot 22 is provided on the surface of the mounting sleeve 7 near the limit block 18. Two limit blocks 18 are symmetrically mounted and are both T-shaped, and two limit grooves 19 are correspondingly provided on the surface of the connection block 10 near the two limit blocks 18. Several balls 20 are rotatably mounted on the top and bottom of one end of the two limit blocks 18 near the limit grooves 19, and each ball 20 is rollingly connected to the inner wall of the adjacent limit groove 19, so that the limit block 18 is not easy to get stuck when moving. One ends of the two limit blocks 18 are slidably installed in the adjacent limit slots 19, and the other ends of the two limit blocks 18 slide out of the limit slots 19 and are inserted into the corresponding slots 22, and the ends of the two limit blocks 18 close to the limit slots 19 are fixedly connected to the adjacent limit springs 21, and the other ends of the two limit springs 21 are fixedly installed on the inner walls of the adjacent limit slots 19. When the limit blocks 18 are inserted into the slots 22, the limit springs 21 are in a natural state.

[0020] When the device is working, the top end of the connecting block 10 is slidably inserted into the mounting sleeve 7, and the abutting inclined surface 23 of the limiting card block 18 abuts against the inner wall of the mounting sleeve 7, so that the limiting card block 18 enters the limiting groove 19. At this time, the limiting spring 21 is in a compressed state. When the limiting card block 18 moves to the groove 22, the limiting card block 18 can be slid into the groove 22 under the action of the limiting spring 21, thereby limiting the connecting block 10 for subsequent installation. Through the mounting holes 9 and connecting holes 11 on the surfaces of the mounting sleeve 7 and the connecting block 10, it is convenient to fix the mounting sleeve 7 and the connecting block 10 together through the mounting bolts 8. Through the cylinder 6 connected to the top end of the mounting sleeve 7, it is convenient to drive the pulley frame 15 to rise and fall in the fixed frame 3 through the cylinder 6, thereby realizing the function of adjusting the installation height of the fixed pulley 13 according to the use requirements, thereby improving the practicality of the device.

[0021] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gravity energy storage device for a coal mine, comprising: A mine (1), characterized in that: a fixed frame (3) is installed on the top of the mine (1), a fixed pulley (13) is installed inside the fixed frame (3), a suspension rope (2) is connected to the surface of the fixed pulley (13), a weight (14) is connected to one end of the suspension rope (2) close to the mine (1), the other end of the suspension rope (2) is connected to a retractable reel (16), and a generator motor (17) is provided at one end of the retractable reel (16); A cylinder (6) is installed at the top of the fixed frame (3) near the fixed pulley (13); a mounting sleeve (7) is connected to the output end of the cylinder (6); a connecting block (10) is installed at the top of the fixed pulley (13) near the mounting sleeve (7); a mounting hole (9) and a connecting hole (11) are respectively formed on one end surface of the mounting sleeve (7) and the connecting block (10); a mounting bolt (8) is installed between the mounting hole (9) and the connecting hole (11); A limit block (18) is slidably mounted on one end of the connection block (10); one end of the limit block (18) is connected to a limit spring (21); a contact inclined surface (23) is provided on the top of the other end of the limit block (18); and a groove (22) is provided on the surface of the mounting sleeve (7) close to the limit block (18).

2. A gravity energy storage device for a coal mine according to claim 1, characterized in that: The bottom end of the fixed frame (3) is fixedly connected to a fixed base plate (4), a retractable reel (16) is rotatably mounted on the top end of the fixed base plate (4), one end of the sling (2) is wound around the retractable reel (16), and the fixed base plate (4) is U-shaped, with a fixing pin (5) mounted on the top edge of the fixed base plate (4).

3. A gravity energy storage device for a coal mine according to claim 1, characterized in that: The cylinder (6) is fixedly mounted on the top of the fixing frame (3), the output end of the cylinder (6) passes through the fixing frame (3) and is inserted into the interior of the fixing frame (3), and the mounting sleeve (7) is fixedly mounted on the output end of the cylinder (6).

4. A gravity energy storage device for a coal mine according to claim 1, characterized in that: The top end of the connecting block (10) is slidably inserted into the mounting sleeve (7), and the bottom end of the connecting block (10) is fixedly connected to a pulley frame (15), the pulley frame (15) is in an inverted U shape, and the rotating shafts at both ends of the fixed pulley (13) are rotatably mounted on the inner side walls of the pulley frame (15).

5. A gravity energy storage device for a coal mine according to claim 1, characterized in that: The mounting hole (9) and the connecting hole (11) are connected to each other, one end of the mounting bolt (8) slides through the mounting hole (9) and the connecting hole (11), the mounting sleeve (7) and the connecting block (10) are fixedly connected by the mounting bolt (8), and a rubber pad (12) is sleeved on the outer wall of one end of the connecting block (10) close to the pulley frame (15), and the bottom end of the mounting sleeve (7) and the pulley frame (15) are tightly connected by the rubber pad (12).

6. A gravity energy storage device for a coal mine according to claim 1, characterized in that: Two limit blocks (18) are symmetrically installed and are both T-shaped. Two limit grooves (19) are correspondingly provided on the surface of the connection block (10) close to the two limit blocks (18). A plurality of balls (20) are rotatably installed on the top and bottom of one end of the two limit blocks (18) close to the limit grooves (19).

7. A gravity energy storage device for a coal mine according to claim 1, characterized in that: One end of the two limit blocks (18) is slidably mounted in the adjacent limit slots (19), the other ends of the two limit blocks (18) are slidably extended out of the limit slots (19) and inserted into the corresponding slots (22), and one end of the two limit blocks (18) close to the limit slots (19) is fixedly connected to the adjacent limit springs (21), and the other ends of the two limit springs (21) are fixedly mounted on the inner wall of the adjacent limit slots (19).

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