Supporting coal hopper damping structure for improving seismic performance of main plant building of thermal power plant

Abstract

The application relates to the technical field of coal hopper damping, and discloses a supporting type coal hopper damping structure for improving the anti-seismic performance of a main plant of a thermal power plant, which comprises a bearing coal hopper, a support frame is arranged on the periphery of the bearing coal hopper, a plurality of support rods for supporting the support frame are arranged on the periphery of the support frame, a support plate is arranged at the bottom of each of the plurality of support rods, a plurality of uniformly-distributed damping mechanisms I are arranged in the middle of the support frame, each of the plurality of support plates is internally provided with a damping mechanism II, one side of the support plate close to the support rod is provided with a mounting mechanism, the damping mechanism I comprises a connecting block which is slidingly connected to the middle of the support frame. Through the redundant hydraulic damper design, the system reliability and stability are enhanced: the main damper plays a role in normal times, effectively slows down the vibration of the bearing coal hopper, and protects the internal equipment; when the main damper fails, the redundant backup can immediately intervene, ensuring the continuous damping function.

Description

Technical Field

[0001] This invention relates to the field of coal hopper vibration reduction technology, specifically to a supported coal hopper vibration reduction structure for improving the seismic performance of the main building of a thermal power plant. Background Technology

[0002] A thermal power plant is an industrial facility that generates electricity by burning fossil fuels. Its basic principle is to convert the heat energy generated by fuel combustion into mechanical energy, and then convert the mechanical energy into electrical energy through a generator. In a thermal power plant, coal hoppers are used to store coal and convey it into the boiler through a conveying system. The design and application of supported coal hoppers are to effectively solve some of the challenges faced in the coal storage and transportation process in thermal power plants. They are mainly used to support and fix the coal hoppers to ensure that the coal is not affected by unnecessary vibration, impact or displacement during the transportation and storage process.

[0003] Traditional supported coal hoppers typically incorporate hydraulic shock absorbers at the connection between the support frame and the hopper. These shock absorbers absorb vibration energy by utilizing changes in oil flow under specific resistance. When vibration or impact acts on the hydraulic shock absorber, the internal piston moves, pushing hydraulic oil through the cylinder. This process of fluid flow, compression, and expansion within a confined space absorbs vibration energy. However, traditional shock absorption structures for coal hoppers often employ partial support, such as installing shock absorbers or elastic supports only in certain areas. This results in uneven shock absorption, with some areas bearing excessive vibration loads.

[0004] In the prior art, in order to avoid local rigidity concentration, most of the vibration reduction schemes adopt multi-point support, which distributes the vibration reduction devices in different positions of the coal hopper, especially in the area near the support points, to ensure that the vibration of various parts of the coal hopper is uniformly reduced. However, under the condition of rapid load change, the vibration reduction device may fail or be overloaded, thus causing the vibration reduction effect to fail. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a supported coal hopper vibration damping structure for improving the seismic performance of the main building of thermal power plants. This solves the problem that existing technologies, which avoid local rigidity concentration through multi-point layout, may cause vibration dampers to fail or overload failure under rapid load changes.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a supported coal hopper vibration damping structure for improving the seismic performance of the main building of a thermal power plant, comprising a supporting coal hopper, a support frame installed on the outer periphery of the supporting coal hopper, a plurality of support rods for supporting the support frame installed around the support frame, a support plate installed at the bottom of each of the plurality of support rods, a plurality of evenly distributed vibration damping mechanisms I installed in the middle of the support frame, a vibration damping mechanism II provided inside each of the plurality of support plates, and an installation mechanism provided on the side of the support plate near the support rods;

[0007] The shock absorption mechanism includes a connecting block slidably connected to the middle of the support frame. The side of the connecting block away from the support frame is fixed to the outer periphery of the coal hopper. A movable plate is threadedly connected to the side of the connecting block away from the coal hopper. A protective shell is slidably connected to the outer periphery of the movable plate. Two hydraulic shock absorbers are fixed to the side of the movable plate away from the connecting block. A sensor is installed on the top of the protective shell and is connected to the movable plate by wires. A flow control valve is installed in the middle of the protective shell. A hydraulic pump is installed on the opposite side of the two movable plates. The flow control valve is connected to the two hydraulic pumps by pipelines. Limiting components are provided on both the left and right sides of the movable plates.

[0008] Preferably, the second shock-absorbing mechanism includes a connecting rod and an isosceles trapezoidal block. The isosceles trapezoidal block is slidably connected to the middle of the support plate. Right-angled trapezoidal blocks are slidably connected to both sides of the isosceles trapezoidal block. Mounting plates are installed on opposite sides of the two right-angled trapezoidal blocks. Friction dampers are installed on opposite sides of the two mounting plates. A connecting rod is installed on the side of the isosceles trapezoidal block near the support rod. Buffer components are provided on both the front and rear sides of the right-angled trapezoidal block.

[0009] Preferably, the installation mechanism includes a protective cover, which is rotatably connected to the support plate on the side near the support rod. A locking block is slidably connected inside the protective cover. A pull rod is installed on the side of the locking block away from the protective cover. A lever is installed on the end of the pull rod away from the locking block. A partition is installed on the side of the lever away from the pull rod. A locking groove is formed on the side of the protective cover near the locking block. A reset component is provided on the outer periphery of the pull rod.

[0010] Preferably, both limiting components include sliders, which are fixed to the left and right sides of the movable plate, respectively. The protective shell has grooves on both the left and right sides inside, and the two sliders are slidably connected inside the two grooves.

[0011] Preferably, both of the buffer components include movable blocks, which are respectively installed on the front and rear sides of the right-angled trapezoidal block, and a damping rod is fixed on the side of each movable block away from the right-angled trapezoidal block.

[0012] Preferably, the reset assembly includes a limiting plate, which is fixed to the outer periphery of the pull rod, and a spring is installed on the side of the limiting plate away from the locking block.

[0013] Preferably, damping rods are fixed on both the left and right sides of the protective shell, and the two damping rods are installed inside the support frame on opposite sides.

[0014] Preferably, the two friction dampers are connected to the left and right sides of the support plate by threads respectively, and the end of the damping rod away from the movable block is fixedly connected to the inside of the support plate.

[0015] Preferably, the card block is slidably connected inside the card slot, and the partition is slidably connected inside the support plate.

[0016] Preferably, the end of the connecting rod away from the isosceles trapezoidal block is installed on the side of the support rod near the support plate, and the outer periphery of the end of the support rod near the support plate is slidably connected to the inside of the support plate.

[0017] This invention provides a supported coal hopper vibration damping structure for improving the seismic performance of the main building of a thermal power plant. It has the following beneficial effects:

[0018] 1. This invention adopts a redundant hydraulic shock absorber design, which enhances the reliability and stability of the system: Under normal conditions, the main shock absorber plays a role in effectively reducing the vibration of the coal hopper and protecting the internal equipment. When the load suddenly increases or the main shock absorber fails, the redundant backup can immediately intervene to ensure the continuous shock absorption function, reduce safety risks, ensure the safe operation of the main plant in the event of earthquakes, and improve the system's adaptability to complex working conditions.

[0019] 2. The overall structure of this invention achieves multi-directional synergistic vibration reduction and optimizes the vibration reduction effect: the vibration reduction mechanism one and two work together to suppress vibration from different directions. Sensor monitoring, flow control valve adjustment and damping rod assistance enable the vibration reduction mechanism one to accurately reduce vibration; the isosceles trapezoidal block, right-angled trapezoidal block, friction damper and buffer assembly work together to enable the vibration reduction mechanism two to effectively dissipate energy. The synergistic effect ensures that the vibration of each part is uniformly alleviated, avoids local problems, extends the structural life and improves the overall seismic performance.

[0020] 3. The installation mechanism of this invention is easy to maintain and repair, ensuring long-term effectiveness: During routine maintenance, the protective cover can be opened by operating the installation mechanism components, which facilitates the repair and inspection of key components such as friction dampers, timely replacement of damaged components, ensuring that all components work well, maintaining the stability and reliability of vibration reduction, reducing maintenance costs and safety hazards, ensuring that the vibration reduction structure can effectively perform its seismic performance for a long time, and providing a guarantee for the safe operation of the plant. Attached Figure Description

[0021] Figure 1 This is a perspective view of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the coal hopper of the present invention;

[0023] Figure 3 This is a schematic diagram of the support plate of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the protective shell of the present invention;

[0025] Figure 5 This is a schematic diagram of the connecting block of the present invention;

[0026] Figure 6 This is a schematic diagram of the hydraulic shock absorber of the present invention;

[0027] Figure 7 This is a schematic diagram of the right-angled trapezoidal block of the present invention;

[0028] Figure 8 This is a schematic diagram of the friction damper of the present invention;

[0029] Figure 9 This is a schematic diagram of the card block structure of the present invention.

[0030] The components include: 1. Coal hopper; 2. Shock absorption mechanism one; 201. Connecting block; 202. Protective shell; 203. Movable plate; 204. Hydraulic shock absorber; 205. Flow control valve; 206. Hydraulic pump; 207. Sensor; 208. Damping rod one; 3. Limiting assembly; 301. Sliding block; 302. Slide groove; 4. Shock absorption mechanism two; 401. Connecting rod; 402. Isosceles trapezoidal block; 403. Right-angled trapezoidal block; 404, mounting plate; 405, friction damper; 5, mounting mechanism; 501, protective cover; 502, lever; 503, pull rod; 504, locking block; 505, partition; 506, slot; 6, reset assembly; 601, limit plate; 602, spring; 7, buffer assembly; 701, movable block; 702, damping rod II; 8, support frame; 9, support rod; 10, support plate. Detailed Implementation

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see the appendix Figure 1 - Appendix Figure 3 This invention provides a supported coal hopper vibration damping structure for improving the seismic performance of the main building of a thermal power plant. It includes a supporting coal hopper 1, a support frame 8 installed on the outer periphery of the supporting coal hopper 1, a plurality of support rods 9 for supporting the support frame 8 installed around the support frame 8, a support plate 10 installed at the bottom of the plurality of support rods 9, a plurality of evenly distributed vibration damping mechanisms 1 2 installed in the middle of the support frame 8, a vibration damping mechanism 2 4 provided inside the plurality of support plates 10, and an installation mechanism 5 provided on the side of the support plate 10 near the support rods 9.

[0033] In this invention, the coal hopper 1 is a key component used for storing coal in a thermal power plant. The support frame 8 installed on its outer periphery can evenly distribute the weight of the coal hopper 1, thus supporting the coal hopper 1 and ensuring its structural stability. The support rods 9 around the support frame 8 further enhance the structural stability and provide additional support force to the support frame 8. The support plate 10 at the bottom of each support rod 9 not only provides a support foundation for the support rod 9, but also provides an installation position for the internal shock absorption mechanism 2 4, and facilitates connection and fixation with the support rod 9 through the installation mechanism 5. The shock absorption mechanism 1 2 in the middle of the support frame 8 works in conjunction with the coal hopper 1 when it vibrates, absorbing and dissipating vibration energy, protecting equipment safety, and improving seismic performance. The shock absorption mechanism 2 4 located inside the support plate 10 works together with the shock absorption mechanism 1 2 to more comprehensively and effectively suppress vibration.

[0034] Please see the appendix Figure 4 - Appendix Figure 6The shock absorption mechanism 2 includes a connecting block 201, which is slidably connected to the middle of the support frame 8. The side of the connecting block 201 away from the support frame 8 is fixed to the outer periphery of the coal hopper 1. The side of the connecting block 201 away from the coal hopper 1 is connected to a movable plate 203 by a thread. A protective shell 202 is slidably connected to the outer periphery of the movable plate 203. Two hydraulic shock absorbers 204 are fixed to the side of the movable plate 203 away from the connecting block 201. A sensor 207 is installed on the top of the protective shell 202. The sensor 207 is connected to the movable plate 203 by a wire. A flow control valve 205 is installed in the middle of the protective shell 202. A hydraulic pump 206 is installed on the opposite side of the two movable plates 203. The flow control valve 205 is connected to the two hydraulic pumps 206 by a pipeline. Damping rods 208 are fixed on both sides of the protective shell 202. The opposite sides of the two damping rods 208 are installed inside the support frame 8. Limiting components 3 are provided on both sides of the movable plate 203.

[0035] In this invention, under normal operating conditions, one of the hydraulic shock absorbers 204 serves as the main shock absorber, undertaking the primary shock absorption task. When the coal hopper 1 vibrates, the movable plate 203 moves, and the main hydraulic shock absorber 204 effectively reduces the vibration amplitude of the coal hopper 1, protecting the coal hopper and its internal equipment from strong vibrations. At the same time, the other hydraulic shock absorber 204 serves as a redundant backup, ready to intervene immediately if the main hydraulic shock absorber 204 fails and cannot work normally or if the load suddenly increases, ensuring that the shock absorption function of the entire shock absorption system is not interrupted and continuously providing stable and reliable seismic protection for the structure. The damping rods 208 fixed on the left and right sides of the protective shell 202 have one end installed inside the support frame 8. When the protective shell 202 moves relative to the support frame 8, the damping rod 208 extends and retracts accordingly. On the one hand, the extension and retraction of the damping rod 208 can provide additional damping force to assist the hydraulic shock absorber 204 in resisting vibration and enhancing the overall shock absorption effect. On the other hand, the damping rod 208, through its own structural characteristics, effectively limits the relative displacement between the protective shell 202 and the support frame 8, preventing the protective shell 202 from shaking excessively or deviating from its normal working position during vibration.

[0036] Please see the appendix Figure 7The second shock absorption mechanism 4 includes a connecting rod 401 and an isosceles trapezoidal block 402. The isosceles trapezoidal block 402 is slidably connected to the middle of the support plate 10. Right-angled trapezoidal blocks 403 are slidably connected to both sides of the isosceles trapezoidal block 402. Mounting plates 404 are installed on opposite sides of the two right-angled trapezoidal blocks 403. Friction dampers 405 are installed on opposite sides of the two mounting plates 404. The opposite sides of the two friction dampers 405 are respectively threaded to the left and right sides inside the support plate 10. A connecting rod 401 is installed on the side of the isosceles trapezoidal block 402 near the support rod 9. The end of the connecting rod 401 away from the isosceles trapezoidal block 402 is installed on the side of the support rod 9 near the support plate 10. The outer periphery of the end of the support rod 9 near the support plate 10 is slidably connected to the inside of the support plate 10. Buffer components 7 are provided on both the front and rear sides of the right-angled trapezoidal block 403.

[0037] In this invention, an isosceles trapezoidal block 402 is slidably connected to the middle of the support plate 10. Right-angled trapezoidal blocks 403 slidably connected to its left and right sides can move away from each other when the isosceles trapezoidal block 402 slides. Mounting plates 404 installed on opposite sides of the two right-angled trapezoidal blocks 403 are used to fix friction dampers 405. The friction dampers 405 contain a damping medium and generate damping force through friction. They are threaded into the support plate 10. When the right-angled trapezoidal blocks 403 move, the friction dampers 405 generate friction to dissipate vibration energy. A connecting rod 401 installed on the side of the isosceles trapezoidal block 402 near the support rod 9 connects the isosceles trapezoidal block 402 to the support rod 9. Simultaneously, the outer periphery of the support rod 9 near the support plate 10 is slidably connected to the support plate 10, facilitating force transmission and relative structural movement. Buffer components 7 are provided on the front and rear sides of the right-angled trapezoidal blocks 403. Movable blocks 701 are located on the right-angled trapezoidal blocks 403. When moved, it causes the damping rod 702 to extend and retract, generating a buffer damping force, further coordinating shock absorption and enhancing the seismic performance of the entire structure.

[0038] Please see the appendix Figure 9 The installation mechanism 5 includes a protective cover 501, which is rotatably connected to the support plate 10 on the side near the support rod 9. A locking block 504 is slidably connected inside the protective cover 501. A pull rod 503 is installed on the side of the locking block 504 away from the protective cover 501. A lever 502 is installed on the end of the pull rod 503 away from the locking block 504. A partition 505 is installed on the side of the lever 502 away from the pull rod 503. A slot 506 is opened on the side of the protective cover 501 near the locking block 504. A reset component 6 is provided on the outer periphery of the pull rod 503. The locking block 504 is slidably connected inside the slot 506. The partition 505 is slidably connected inside the support plate 10.

[0039] In this invention, the lever 502 is used to drive the pull rod 503 to move, and the pull rod 503 is connected to the lever 502 and the locking block 504. Thus, when the lever 502 moves, it will drive the locking block 504 to move through the pull rod 503. The protective cover 501 is used to provide a closed space protection function to protect the multiple components inside the support plate 10 from being damaged by external substances. The partition 505 is used to prevent impurities from entering the support plate 10 and blocking the moving path of the lever 502.

[0040] Please see the appendix Figure 5 Both limiting components 3 include sliders 301, which are fixed on the left and right sides of the movable plate 203 respectively. The protective shell 202 has grooves 302 on both the left and right sides inside, and the two sliders 301 are slidably connected inside the two grooves 302 respectively.

[0041] In this invention, the slider 301 is fixed on the left and right sides of the movable plate 203, and its shape is adapted to the slide groove 302, allowing it to slide stably within the slide groove 302 opened on the left and right sides inside the protective shell 202. When the coal hopper 1 vibrates, the movable plate 203 moves within the protective shell 202, and the slider 301 slides along the slide groove 302. This sliding connection method can strictly limit the horizontal movement range of the movable plate 203, preventing the movable plate 203 from excessively shifting due to excessive vibration, or even disengaging from its normal connection position with other components, thus ensuring that these components can work stably and collaboratively.

[0042] Please see the appendix Figure 8 Both buffer components 7 include movable blocks 701. The two movable blocks 701 are respectively installed on the front and rear sides of the right-angled trapezoidal block 403. A damping rod 702 is fixed on the side of each movable block 701 away from the right-angled trapezoidal block 403. The end of the damping rod 702 away from the movable block 701 is fixedly connected to the inside of the support plate 10.

[0043] In this invention, movable blocks 701 are respectively installed on the front and rear sides of the right-angled trapezoidal block 403. When the right-angled trapezoidal block 403 moves due to vibration, the movable blocks 701 move accordingly, and the damping rod 702 fixed on the side away from the right-angled trapezoidal block 403 begins to function. The end of the damping rod 702 away from the movable block 701 is fixed inside the support plate 10, forming a stable support point. During this process, the damping rod 702 generates buffer damping force through its own expansion and contraction deformation, effectively absorbing and dissipating the energy generated by the movement of the right-angled trapezoidal block 403, further reducing the impact of vibration on the overall structure, and working in conjunction with components such as the friction damper 405 to enhance the vibration damping effect of the second vibration damping mechanism 4.

[0044] Please see the appendix Figure 9The reset assembly 6 includes a limiting plate 601, which is fixed to the outer periphery of the pull rod 503. A spring 602 is installed on the side of the limiting plate 601 away from the locking block 504.

[0045] In this invention, the limiting plate 601 is connected to the pull rod 503. When the pull rod 503 moves, it can drive the limiting plate 601 to move together. The spring 602 is used to provide elastic support and reset thrust. The spring 602 is made of 65Mn spring steel and has excellent elastic deformation capability.

[0046] Working principle: When external vibration occurs, the coal hopper 1 will vibrate accordingly. This vibration is transmitted to the surrounding support frame 8 through its own structure, and will control the connecting block 201 to slide within the support frame 8. The sliding of the connecting block 201 will drive the movable plate 203, which is threadedly connected to it, to move accordingly within the protective shell 202. At this time, the sensor 207 installed on the top of the protective shell 202 will monitor the displacement of the movable plate 203 in real time. After detecting the movement of the movable plate 203, the sensor 207 will quickly transmit the signal to the flow control valve 205 through the wire.

[0047] The flow control valve 205 precisely adjusts the flow rate of hydraulic oil in the pipeline based on the real-time feedback information from the sensor 207 and the working status of the hydraulic pump 206. This allows the hydraulic shock absorber 204 to generate the most suitable damping force according to the actual vibration conditions, achieving the best shock absorption effect whether facing slight or strong vibrations. This ensures that the entire shock absorption system can flexibly cope with various complex vibration conditions. When the main hydraulic shock absorber 204 is damaged and cannot be used, the flow control valve 205 will immediately activate the redundant hydraulic shock absorber 204. By intervening through the redundant hydraulic shock absorber 204, the shock absorption effect is ensured to be uninterrupted.

[0048] The vibration experienced by the support frame 8 is transmitted to the isosceles trapezoidal block 402 through the support rod 9. The isosceles trapezoidal block 402 begins to slide in the middle of the support plate 10, simultaneously causing the right-angled trapezoidal blocks 403 connected to its left and right sides to slide away from each other. The mounting plate 404 connected to the right-angled trapezoidal block 403 moves as the right-angled trapezoidal block 403 slides. The friction damper 405 on the outside of the mounting plate 404 generates friction, which consumes vibration energy and effectively reduces vibration, sharing the damping pressure of the damping mechanism 2 and further improving the seismic performance of the entire structure. The buffer components 7 installed on the front and rear sides of the right-angled trapezoidal block 403 work together. The movable block 701 in the buffer component 7 drives the damping rod 702 to extend and retract when the right-angled trapezoidal block 403 moves, thereby generating a buffer damping force. This allows the damping mechanism 4 to work better with the entire structure, forming a complete and efficient damping system to jointly cope with the vibration impact of external forces such as earthquakes and protect the stability and safety of the entire structure.

[0049] During routine maintenance, moving the lever 502 causes it to slide within the support plate 10, which in turn moves the pull rod 503. The pull rod 503 is connected to the lever 502 and the locking block 504. When the pull rod 503 moves, it moves the locking block 504, which in turn moves the limiting plate 601. More specifically, since the limiting plate 601 is fixed to one end of the pull rod 503, it moves along with the pull rod 503. At this time, the limiting plate 601 will squeeze the spring 602, thereby overcoming the elastic force of the spring 602, causing the locking block 504 to slide out from the slot 506 inside the protective cover 501. After the locking block 504 slides out from the slot 506, the protective cover 501 loses the limiting effect of the locking block 504, thus allowing it to rotate. After rotating the protective cover 501, the friction damper 405 inside the support plate 10 can be repaired and inspected. Replace it in time when necessary to ensure that the shock absorption effect can be maintained in good condition.

[0050] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A supported coal hopper vibration damping structure for improving the seismic performance of the main building of a thermal power plant, comprising a load-bearing coal hopper (1), characterized in that, A support frame (8) is installed on the outer periphery of the coal hopper (1). Multiple support rods (9) for supporting the support frame (8) are installed around the support frame (8). Support plates (10) are installed at the bottom of the multiple support rods (9). Multiple evenly distributed shock absorption mechanisms (2) are installed in the middle of the support frame (8). Shock absorption mechanisms (4) are provided inside the multiple support plates (10). An installation mechanism (5) is provided on the side of the support plate (10) near the support rods (9). The shock absorption mechanism 1 (2) includes a connecting block (201), which is slidably connected to the middle of the support frame (8). The side of the connecting block (201) away from the support frame (8) is fixed to the outer periphery of the coal hopper (1). A movable plate (203) is threadedly connected to the side of the connecting block (201) away from the coal hopper (1). A protective shell (202) is slidably connected to the outer periphery of the movable plate (203). Two liquids are fixed to the side of the movable plate (203) away from the connecting block (201). The shock absorber (204) has a sensor (207) installed on the top of the protective shell (202). The sensor (207) is connected to the movable plate (203) by a wire. A flow control valve (205) is installed in the middle of the protective shell (202). A hydraulic pump (206) is installed on each of the two movable plates (203) facing each other. The flow control valve (205) is connected to the two hydraulic pumps (206) by a pipeline. Limiting components (3) are provided on the left and right sides of the movable plate (203). The second shock absorption mechanism (4) includes a connecting rod (401) and an isosceles trapezoidal block (402). The isosceles trapezoidal block (402) is slidably connected to the middle of the support plate (10). Right-angled trapezoidal blocks (403) are slidably connected to both the left and right sides of the isosceles trapezoidal block (402). Mounting plates (404) are installed on opposite sides of the two right-angled trapezoidal blocks (403). Friction dampers (405) are installed on opposite sides of the two mounting plates (404). The connecting rod (401) is installed on the side of the isosceles trapezoidal block (402) close to the support rod (9). Buffer components (7) are provided on both the front and rear sides of the right-angled trapezoidal block (403). The installation mechanism (5) includes a protective cover (501), which is rotatably connected to the support plate (10) on the side near the support rod (9). A locking block (504) is slidably connected inside the protective cover (501). A pull rod (503) is installed on the side of the locking block (504) away from the protective cover (501). A lever (502) is installed on the end of the pull rod (503) away from the locking block (504). A partition (505) is installed on the side of the lever (502) away from the pull rod (503). A slot (506) is opened on the side of the protective cover (501) near the locking block (504). A reset component (6) is provided on the outer periphery of the pull rod (503). Both of the limiting components (3) include sliders (301), which are fixed on the left and right sides of the movable plate (203). The protective shell (202) has grooves (302) on both the left and right sides. The two sliders (301) are slidably connected to the inside of the two grooves (302). The protective shell (202) has damping rods (208) fixed on both the left and right sides. The two damping rods (208) are installed on opposite sides inside the support frame (8).

2. The supported coal hopper vibration damping structure for improving the seismic performance of the main building of a thermal power plant according to claim 1, characterized in that, Both of the buffer components (7) include movable blocks (701), which are respectively installed on the front and rear sides of the right trapezoidal block (403). Damping rods (702) are fixed on the side of each of the movable blocks (701) away from the right trapezoidal block (403).

3. The supported coal hopper vibration damping structure for improving the seismic performance of the main building of a thermal power plant according to claim 1, characterized in that, The reset assembly (6) includes a limiting plate (601), which is fixed to the outer periphery of the pull rod (503), and a spring (602) is installed on the side of the limiting plate (601) away from the locking block (504).

4. The supported coal hopper vibration damping structure for improving the seismic performance of the main building of a thermal power plant according to claim 2, characterized in that, The two friction dampers (405) are connected to the left and right sides of the support plate (10) by threads on their opposite sides. The end of the second damping rod (702) away from the movable block (701) is fixedly connected to the inside of the support plate (10).

5. The supported coal hopper vibration damping structure for improving the seismic performance of the main building of a thermal power plant according to claim 1, characterized in that, The card block (504) is slidably connected inside the card slot (506), and the partition (505) is slidably connected inside the support plate (10).

6. The supported coal hopper vibration damping structure for improving the seismic performance of the main building of a thermal power plant according to claim 1, characterized in that, The end of the connecting rod (401) away from the isosceles trapezoidal block (402) is installed on the side of the support rod (9) near the support plate (10), and the outer periphery of the support rod (9) near the support plate (10) is slidably connected to the inside of the support plate (10).

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