Supporting type coal bucket damping structure for improving anti-seismic property of main power house of thermal power plant

Abstract

The invention relates to the technical field of coal bucket damping, and discloses a bearing type coal bucket damping structure used for improving the anti-seismic property of a main power house of a thermal power plant, the bearing type coal bucket damping structure comprises a bearing coal bucket, a supporting frame is installed on the periphery of the bearing coal bucket, and a plurality of supporting rods used for supporting the supporting frame are installed on the periphery of the supporting frame; supporting plates are mounted at the bottoms of the multiple supporting rods correspondingly, multiple first damping mechanisms which are evenly distributed are mounted in the middle of the supporting frame, second damping mechanisms are arranged in the multiple supporting plates correspondingly, mounting mechanisms are arranged on the sides, close to the supporting rods, of the supporting plates, and each first damping mechanism comprises a connecting block; the connecting block is connected to the middle of the supporting frame in a sliding mode. By adopting the design of the redundant hydraulic shock absorbers, the reliability and the stability of the system are enhanced: the main shock absorber plays a role in normal, the shock of the bearing coal bucket is effectively relieved, internal equipment is protected, and when the main shock absorber breaks down, redundant backup can be immediately intervened to ensure that the shock absorption function is continuous.

Description

Technical Field

[0001] The invention relates to the technical field of coal hopper shock absorption, in particular to a supporting coal hopper shock absorption structure for improving the anti-seismic performance of a main plant building of a thermal power plant. Background Art

[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, the coal hopper is used to store coal and deliver the coal to the boiler through a conveying system. The design and application of the supported coal hopper is to effectively solve some challenges faced in the process of coal storage and transportation in thermal power plants. It is mainly used to support and fix the coal hopper to ensure that the coal is not affected by unnecessary vibration, impact or deviation during transportation and storage. The traditional supported coal hopper will be equipped with a hydraulic shock absorber at the connection between the support frame and the coal hopper. The hydraulic shock absorber uses the change of oil flow under a specific resistance to absorb vibration energy. When vibration or impact acts on the hydraulic shock absorber, the internal piston will push the hydraulic oil to flow in the cylinder body as it moves, so that the liquid flows, compresses and expands in a confined space to absorb the vibration energy generated during the operation of the coal hopper. However, the shock absorbing structure of the coal hopper in the traditional shock absorbing structure often adopts a local support method, such as only setting shock absorbers or elastic supports in some areas, which will lead to uneven shock absorption effect, and some parts will bear excessive vibration load; In order to avoid local rigidity concentration, most of the existing technologies adopt a multi-point support shock absorption solution, distributing the shock absorption devices at 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 evenly alleviated. However, in the case of rapid changes in load, the shock absorber may fail or be overloaded, resulting in the failure of the shock absorption effect. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides a supported coal hopper shock-absorbing structure for improving the seismic performance of the main building of a thermal power plant, which solves the problem that the prior art avoids local rigidity concentration through multi-point layout, but the shock absorber may fail or overload when the load changes rapidly.

[0004] To achieve the above purpose, the present invention is implemented by the following technical scheme: a supporting coal hopper shock-absorbing structure for improving the anti-seismic performance of the main power plant of a thermal power plant, comprising a bearing coal hopper, a support frame is installed on the outer periphery of the bearing coal hopper, a plurality of support rods for supporting the support frame are installed around the support frame, a plurality of support rods are installed at the bottom of each of the support plates, a plurality of uniformly distributed shock-absorbing mechanisms 1 are installed in the middle of the support frame, a plurality of support plates are provided with shock-absorbing mechanisms 2 inside, and a mounting mechanism is provided on one side of the support plate close to the support rod; The shock absorbing mechanism 1 includes a connecting block, which is slidably connected to the middle part of the support frame, and the connecting block is fixed to the outer periphery of the coal hopper on a side away from the support frame. A movable plate is threadedly connected to the side of the connecting block away from the coal hopper, and 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 the sensor is connected to the movable plate through an electric wire. A flow control valve is installed in the middle part of the protective shell, and hydraulic pumps are installed on the opposite sides of the two movable plates. The flow control valve and the two hydraulic pumps are connected through pipelines, and limit assemblies are provided on the left and right sides of the movable plate.

[0005] Preferably, the second shock absorbing mechanism includes a connecting rod including an isosceles trapezoidal block, the isosceles trapezoidal block is slidably connected to the middle part of the support plate, the left and right sides of the isosceles trapezoidal block are slidably connected with right-angled trapezoidal blocks, 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 close to the support rod, and buffer components are provided on the front and rear sides of the right-angled trapezoidal block.

[0006] Preferably, the mounting mechanism includes a protective cover, which is rotatably connected to the side of the support plate close to the support rod, a clamping block is slidably connected inside the protective cover, a pull rod is installed on the side of the clamping block away from the protective cover, a shift plate is installed on the end of the pull rod away from the clamping block, a partition is installed on the side of the shift plate away from the pull rod, a clamping groove is opened on the side of the protective cover close to the clamping block, and a reset assembly is provided on the periphery of the pull rod.

[0007] Preferably, the two limit assemblies each include a slider, and the slider is respectively fixed on the left and right sides of the movable plate, and sliding grooves are provided on the left and right sides inside the protective shell, and the two sliders are respectively slidably connected inside the two sliding grooves.

[0008] Preferably, the two buffer assemblies each include a movable block, the two movable blocks are respectively mounted on the front and rear sides of the right-angled trapezoidal block, and a damping rod 2 is fixed to one side of the two movable blocks away from the right-angled trapezoidal block.

[0009] Preferably, the reset assembly comprises a limit plate, the limit plate is fixed to the outer periphery of the pull rod, and a spring is installed on a side of the limit plate away from the clamping block.

[0010] Preferably, damping rods 1 are fixed on both left and right sides of the protective shell, and opposite sides of the two damping rods 1 are installed inside the support frame.

[0011] Preferably, the two friction dampers are respectively connected to the left and right sides of the interior of the support plate through threads at their far sides, and one end of the damping rod 2 away from the movable block is fixedly connected to the interior of the support plate.

[0012] Preferably, the card block is slidably connected to the inside of the card slot, and the partition is slidably connected to the inside of the support plate.

[0013] Preferably, one end of the connecting rod away from the isosceles trapezoidal block is installed on a side of the support rod close to the support plate, and the outer periphery of one end of the support rod close to the support plate is slidably connected to the inside of the support plate.

[0014] The present invention provides a supporting coal hopper shock-absorbing structure for improving the earthquake resistance of the main power plant of a thermal power plant. It has the following beneficial effects: 1. The present invention adopts a redundant hydraulic shock absorber design to enhance the reliability and stability of the system: under normal circumstances, the main shock absorber plays a role, effectively reduces the vibration of the coal bucket, and protects the internal equipment. When the load suddenly increases or the main shock absorber fails, the redundant backup can immediately intervene to ensure that the shock absorption function continues, reduce safety risks, and ensure the safe operation of the main plant in earthquakes and other situations, and improve the system's adaptability to complex working conditions.

[0015] 2. The overall structure of the present invention realizes multi-directional coordinated shock absorption and optimizes the shock absorption effect: the shock absorption mechanism 1 and the second work together to suppress vibration from different directions, and the sensor monitoring, flow control valve adjustment and damping rod assistance enable the shock absorption mechanism 1 to achieve precise shock absorption; the isosceles trapezoidal blocks, right-angled trapezoidal blocks, friction dampers and buffer components work together to allow the shock absorption mechanism 2 to effectively consume energy, and the synergistic effect ensures that the vibration of each part is evenly alleviated, avoids local problems, extends the life of the structure, and improves the overall seismic performance.

[0016] 3. The installation mechanism of the present invention is convenient for maintenance and repair, ensuring long-term effectiveness: during daily maintenance, the protective cover can be opened by operating the installation mechanism components, which is convenient for repairing and inspecting key components such as the friction damper, and replacing damaged components in time to ensure that all components work well, maintain shock absorption stability and reliability, reduce maintenance costs and safety hazards, ensure that the shock absorption structure can effectively exert its anti-seismic performance in the long term, and provide protection for the safe operation of the factory. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention; Figure 2 This is a schematic structural diagram of the coal hopper of the present invention; Figure 3 It is a structural schematic diagram of the support plate of the present invention; Figure 4 It is a schematic diagram of the structure of the protective shell of the present invention; Figure 5It is a structural schematic diagram of the connection block of the present invention; Figure 6 It is a structural schematic diagram of the hydraulic shock absorber of the present invention; Figure 7 It is a schematic diagram of the structure of the right-angle trapezoidal block of the present invention; Figure 8 It is a structural schematic diagram of the friction damper of the present invention; Fig. 9 It is a structural schematic diagram of the card block of the present invention.

[0018] Among them, 1. Coal hopper; 2. Shock-absorbing mechanism 1; 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 1; 3. Limiting assembly; 301. Sliding block; 302. Sliding groove; 4. Shock-absorbing mechanism 2; 401. Connecting rod; 402. Isosceles trapezoidal block; 403. Right-angle trapezoidal block; 404, mounting plate; 405, friction damper; 5, mounting mechanism; 501, protective cover; 502, dial plate; 503, pull rod; 504, clamping block; 505, partition; 506, clamping slot; 6, reset assembly; 601, limit plate; 602, spring; 7, buffer assembly; 701, movable block; 702, damping rod 2; 8, support frame; 9, support rod; 10, support plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on 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.

[0020] Please see attached Figure 1 - Attachment Figure 3 The embodiment of the present invention provides a supporting coal hopper shock-absorbing structure for improving the anti-seismic performance of the main powerhouse of a thermal power plant, comprising a bearing coal hopper 1, a support frame 8 is installed on the outer periphery of the bearing coal hopper 1, a plurality of support rods 9 for supporting the support frame 8 are installed around the support frame 8, a plurality of support rods 9 are installed at the bottom of each of the support rods 9, a plurality of uniformly distributed shock-absorbing mechanisms 1 2 are installed in the middle of the support frame 8, a plurality of support plates 10 are provided inside each of the support plates 10, and a mounting mechanism 5 is provided on one side of the support plate 10 close to the support rod 9; In the present invention, the coal hopper 1 is a key component for storing coal in a thermal power plant. The support frame 8 installed on its periphery can evenly disperse the weight of the coal hopper 1, play a role in supporting the coal hopper 1, and ensure its structural stability. The support rods 9 around the support frame 8 further enhance the structural stability and provide additional supporting force for the support frame 8. The support plate 10 at the bottom of each support rod 9 not only provides a supporting basis for the support rod 9, but also provides an installation position for the internal shock absorbing mechanism 2 4, and is convenient for connecting and fixing with the support rod 9 through the installation mechanism 5. The shock absorbing mechanism 1 2 in the middle of the support frame 8 works together when the coal hopper 1 vibrates to absorb and consume vibration energy, protect equipment safety, and improve seismic resistance. The shock absorbing mechanism 2 4 located inside the support plate 10 works together with the shock absorbing mechanism 1 2 to more comprehensively and effectively suppress vibration.

[0021] Please see attached Figure 4 - Attachment Figure 6 The shock absorbing mechanism 2 includes a connecting block 201, which is slidably connected to the middle part 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 bucket 1. The side of the connecting block 201 away from the coal bucket 1 is connected with a movable plate 203 through a thread. The outer periphery of the movable plate 203 is slidably connected with a protective shell 202. 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 and the movable plate 203 are connected by wires. A flow control valve 205 is installed in the middle part of the protective shell 202. Hydraulic pumps 206 are installed on the opposite sides of the two movable plates 203. The flow control valve 205 and the two hydraulic pumps 206 are connected by pipelines. Damping rods 208 are fixed on the left and right 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 the left and right sides of the movable plate 203.

[0022] In the present invention, under normal working conditions, one of the hydraulic shock absorbers 204 serves as the main shock absorber to undertake the main shock absorption task. When the coal bucket 1 vibrates, the movable plate 203 moves, and the main hydraulic shock absorber 204 effectively reduces the vibration amplitude of the coal bucket 1, protecting the coal bucket and its internal equipment from the influence of strong vibration. At the same time, the other hydraulic shock absorber 204 serves as a redundant backup, ready to intervene immediately when the main hydraulic shock absorber 204 fails and cannot work normally or the load suddenly increases, ensuring that the shock absorption function of the entire shock absorption system will not be interrupted, and continuously providing stable and reliable anti-seismic protection for the structure. The damping rod 208 fixed on the left and right sides of the protective shell 202 has one end installed inside the support frame 8. When the protective shell 202 moves relative to the support frame 8, the damping rod 208 will expand and contract accordingly. On the one hand, the expansion and contraction of the damping rod 208 can provide additional damping force to assist the hydraulic shock absorber 204 in resisting vibration and enhance the overall shock absorption effect. On the other hand, the damping rod 208 effectively limits the relative displacement between the protective shell 202 and the support frame 8 through its own structural characteristics, thereby preventing the protective shell 202 from excessively shaking or deviating from the normal working position during vibration.

[0023] Please see attached Figure 7 The shock absorbing mechanism 2 4 includes a connecting rod 401 including an isosceles trapezoidal block 402, the isosceles trapezoidal block 402 is slidably connected to the middle part of the support plate 10, and the left and right sides of the isosceles trapezoidal block 402 are slidably connected with right-angled trapezoidal blocks 403, and mounting plates 404 are installed on the opposite sides of the two right-angled trapezoidal blocks 403, and friction dampers 405 are installed on the opposite sides of the two mounting plates 404. The two friction dampers 405 are respectively connected to the left and right sides of the inner part of the support plate 10 by threading on the far side, and the isosceles trapezoidal block 402 is installed with a connecting rod 401 on the side close to the support rod 9, and the end of the connecting rod 401 away from the isosceles trapezoidal block 402 is installed on the side of the support rod 9 close to the support plate 10, and the outer periphery of the end of the support rod 9 close to the support plate 10 is slidably connected to the inside of the support plate 10, and the front and rear sides of the right-angled trapezoidal block 403 are provided with buffer components 7.

[0024] In the present invention, the isosceles trapezoidal block 402 is slidably connected to the middle of the support plate 10, and the right-angled trapezoidal blocks 403 slidably connected on the left and right sides thereof can move away from each other when the isosceles trapezoidal block 402 slides. The mounting plates 404 installed on the opposite sides of the two right-angled trapezoidal blocks 403 are used to fix the friction damper 405. The friction damper 405 contains a damping medium inside, generates a damping force through friction, and is connected to the inside of the support plate 10 through threads. When the right-angled trapezoidal block 403 moves, the friction damper 405 generates friction to consume vibration energy. The connecting rod 401 installed on one side of the isosceles trapezoidal block 402 close to the support rod 9 connects the isosceles trapezoidal block 402 with the support rod 9. At the same time, the outer periphery of the support rod 9 close to the support plate 10 is slidably connected to the inside of the support plate 10, which is convenient for force transmission and relative movement of the structure. The right-angled trapezoidal block 403 is provided with a buffer assembly 7 on the front and rear sides, and the movable block 701 is arranged on the right-angled trapezoidal block 403. When moving, the damping rod 2 702 is driven to expand and contract, generating a buffer damping force, further coordinating shock absorption, and enhancing the seismic performance of the entire structure.

[0025] Please see attached Fig. 9 The mounting mechanism 5 includes a protective cover 501, which is rotatably connected to the side of the support plate 10 close to the support rod 9, and a block 504 is slidably connected inside the protective cover 501. A pull rod 503 is installed on the side of the block 504 away from the protective cover 501, and a shift plate 502 is installed on the end of the pull rod 503 away from the block 504. A partition 505 is installed on the side of the shift plate 502 away from the pull rod 503. A slot 506 is provided on the side of the protective cover 501 close to the block 504, and a reset component 6 is provided on the periphery of the pull rod 503. The block 504 is slidably connected to the inside of the slot 506, and the partition 505 is slidably connected to the inside of the support plate 10.

[0026] In the present invention, the dial plate 502 is used to drive the pull rod 503 to move, and the pull rod 503 is connected to the dial plate 502 and the block 504, so that when the dial plate 502 moves, the block 504 will be driven to move through the pull rod 503, and 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, and the partition 505 is used to prevent impurities from entering the support plate 10 and blocking the moving path of the dial plate 502.

[0027] Please see attached Figure 5 The two limit assemblies 3 each include a slider 301 , which is respectively fixed on the left and right sides of the movable plate 203 . Slide grooves 302 are provided on the left and right sides of the interior of the protective shell 202 , and the two sliders 301 are respectively slidably connected inside the two slide grooves 302 .

[0028] In the present 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, and it can stably slide in the slide groove 302 opened on the left and right sides of the protective shell 202. When the coal hopper 1 vibrates, the movable plate 203 moves in 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, prevent the movable plate 203 from excessively deflecting due to excessive vibration, or even out of the normal connection position with other components, and ensure that these components can work stably together.

[0029] Please see attached Figure 8 The two buffer assemblies 7 each include a movable block 701, which are respectively mounted on the front and rear sides of the right-angled trapezoidal block 403. A damping rod 2 702 is fixed on one side of the two movable blocks 701 away from the right-angled trapezoidal block 403, and one end of the damping rod 2 702 away from the movable block 701 is fixedly connected to the inside of the support plate 10.

[0030] In the present invention, the movable block 701 is 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 block 701 moves accordingly, and the damping rod 2 702 fixed on the side away from the right-angled trapezoidal block 403 begins to play a role. The end of the damping rod 2 702 away from the movable block 701 is fixed inside the support plate 10 to form a stable support point. In this process, the damping rod 2 702 generates a buffer damping force through its own telescopic deformation, effectively absorbs and consumes the energy generated by the movement of the right-angled trapezoidal block 403, further reduces the impact of vibration on the overall structure, and cooperates with the friction damper 405 and other components to enhance the shock absorption effect of the shock absorption mechanism 2 4.

[0031] Please see attached Fig. 9 The reset assembly 6 includes a limit 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 limit plate 601 away from the block 504 .

[0032] In the present invention, the limit plate 601 is connected to the pull rod 503, and when the pull rod 503 moves, the limit plate 601 can be driven to move together, and 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 ability.

[0033] Working principle: When the outside world vibrates, the coal bucket 1 will vibrate accordingly. This vibration is transmitted to the surrounding support frame 8 through its own structure, and will control the connection block 201 to slide in the support frame 8. The sliding of the connection block 201 drives the movable plate 203 threadedly connected thereto to move accordingly in 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; The flow control valve 205 accurately adjusts the flow of the hydraulic oil in the pipeline according to the real-time feedback information of the sensor 207 and the working status of the hydraulic pump 206, so that the hydraulic shock absorber 204 can generate the most appropriate damping force according to the actual vibration conditions, and can achieve the best shock absorption effect regardless of whether it is facing slight vibration or strong vibration, thereby ensuring that the entire shock absorption system can flexibly respond to various complex vibration conditions. When the main hydraulic shock absorber 204 is damaged and cannot be used, the flow control valve 205 will immediately start the redundant hydraulic shock absorber 204, and intervene through the redundant hydraulic shock absorber 204 to ensure that the shock absorption effect will not be interrupted.

[0034] The vibration received by the support frame 8 will be transmitted to the isosceles trapezoidal block 402 through the support rod 9. The isosceles trapezoidal block 402 starts to slide in the middle of the support plate 10, and at the same time drives the right-angled trapezoidal blocks 403 slidably connected on the left and right sides thereof to slide away. The mounting plate 404 connected to the right-angled trapezoidal block 403 will move with the sliding of the right-angled trapezoidal block 403, and the friction damper 405 on the outside of the mounting plate 404 will generate friction force, which consumes vibration energy through friction force, thereby effectively reducing vibration, sharing the shock absorption pressure of the shock absorption 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. When the right-angled trapezoidal block 403 moves, the movable block 701 in the buffer component 7 will drive the damping rod 2 702 to expand and contract, thereby generating a buffer damping force, so that the shock absorption mechanism 2 4 can work better with the entire structure to form a complete and efficient shock absorption system, jointly cope with the vibration impact caused by external forces such as earthquakes, and protect the stability and safety of the entire structure.

[0035] During routine maintenance, the plate 502 is moved to slide in the support plate 10, and the pull rod 503 is driven to move together. The pull rod 503 is connected to the plate 502 and the block 504. When the pull rod 503 moves, the block 504 is driven to move together, and the limit plate 601 is driven to move. More specifically, since the limit plate 601 is fixed to one end of the pull rod 503, the limit plate 601 is driven to move together when the pull rod 503 moves. At this time, the limiting plate 601 will squeeze the spring 602, thereby overcoming the elastic force of the spring 602 and causing the block 504 to slide out of the slot 506 opened inside the protective cover 501. After the block 504 slides out of the slot 506, the protective cover 501 loses the limiting position of the block 504, thereby being able to rotate. After rotating the protective cover 501, the friction damper 405 inside the support plate 10 can be repaired and inspected, and replaced in time when necessary to ensure that the shock absorption effect can maintain a good state.

[0036] 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 support-type coal hopper shock-absorbing structure for improving the seismic performance of a main powerhouse of a thermal power plant, comprising a support-type coal hopper (1), characterized in that: A support frame (8) is installed on the outer periphery of the coal-carrying hopper (1), a plurality of support rods (9) for supporting the support frame (8) are installed around the support frame (8), a support plate (10) is installed at the bottom of each of the plurality of support rods (9), a plurality of evenly distributed shock absorbing mechanisms (1) (2) are installed in the middle of the support frame (8), a plurality of shock absorbing mechanisms (2) are installed inside each of the plurality of support plates (10), and a mounting mechanism (5) is provided on one side of the support plate (10) close to the support rod (9); The shock absorbing mechanism 1 (2) comprises a connecting block (201), the connecting block (201) being slidably connected to the middle part of the support frame (8), the connecting block (201) being fixed to the outer periphery of the coal carrying bucket (1) on the side away from the support frame (8), a movable plate (203) being connected to the side of the connecting block (201) away from the coal carrying bucket (1) via threads, a protective shell (202) being slidably connected to the outer periphery of the movable plate (203), and two liquid-tightening devices being fixed to the side of the movable plate (203) away from the connecting block (201). A pressure shock absorber (204) is provided, a sensor (207) is installed on the top of the protective shell (202), the sensor (207) and the movable plate (203) are connected via an electric wire, a flow control valve (205) is installed in the middle of the protective shell (202), hydraulic pumps (206) are installed on opposite sides of the two movable plates (203), the flow control valve (205) and the two hydraulic pumps (206) are connected via pipelines, and limit assemblies (3) are provided on the left and right sides of the movable plate (203).

2. The supporting coal hopper shock-absorbing structure for improving the seismic performance of the main building of a thermal power plant according to claim 1 is characterized in that: The second shock absorbing mechanism (4) comprises a connecting rod (401) and an isosceles trapezoidal block (402), wherein the isosceles trapezoidal block (402) is slidably connected to the middle of the support plate (10), and right-angled trapezoidal blocks (403) are slidably connected to the left and right sides of the isosceles trapezoidal block (402), and mounting plates (404) are installed on opposite sides of the two right-angled trapezoidal blocks (403), and friction dampers (405) are installed on opposite sides of the two mounting plates (404), and a connecting rod (401) is installed on the side of the isosceles trapezoidal block (402) close to the support rod (9), and buffer components (7) are provided on the front and rear sides of the right-angled trapezoidal block (403).

3. The supporting coal hopper shock-absorbing structure for improving the seismic performance of the main building of a thermal power plant according to claim 1 is characterized in that: The mounting mechanism (5) comprises a protective cover (501), wherein the protective cover (501) is rotatably connected to a side of the support plate (10) close to the support rod (9), a clamping block (504) is slidably connected inside the protective cover (501), a pull rod (503) is installed on a side of the clamping block (504) away from the protective cover (501), a shifting plate (502) is installed on an end of the pull rod (503) away from the clamping block (504), a partition plate (505) is installed on a side of the shifting plate (502) away from the pull rod (503), a clamping groove (506) is provided on a side of the protective cover (501) close to the clamping block (504), and a reset component (6) is provided on the periphery of the pull rod (503).

4. The supporting coal hopper shock-absorbing structure for improving the earthquake resistance of the main power plant building of a thermal power plant according to claim 1 is characterized in that: The two limit assemblies (3) each comprise a slider (301), the sliders (301) being fixed to the left and right sides of the movable plate (203) respectively, the left and right sides of the interior of the protective shell (202) are provided with a slide groove (302), and the two sliders (301) are slidably connected to the inside of the two slide grooves (302) respectively.

5. The supporting coal hopper shock-absorbing structure for improving the earthquake resistance of the main power plant building of a thermal power plant according to claim 2 is characterized in that: The two buffer assemblies (7) each comprise a movable block (701), the two movable blocks (701) being respectively mounted on the front and rear sides of the right-angled trapezoidal block (403), and a damping rod 2 (702) being fixed on one side of the two movable blocks (701) away from the right-angled trapezoidal block (403).

6. The supporting coal hopper shock-absorbing structure for improving the earthquake resistance of the main building of a thermal power plant according to claim 3 is characterized in that: The reset assembly (6) comprises a limit plate (601), the limit plate (601) being fixed to the outer periphery of the pull rod (503), and a spring (602) being installed on a side of the limit plate (601) away from the clamping block (504).

7. The supporting coal hopper shock-absorbing structure for improving the earthquake resistance of the main building of a thermal power plant according to claim 1 is characterized in that: Damping rods 1 (208) are fixed to both left and right sides of the protective shell (202), and opposite sides of the two damping rods 1 (208) are installed inside the support frame (8).

8. The supporting coal hopper shock-absorbing structure for improving the earthquake resistance of the main power plant building of a thermal power plant according to claim 5 is characterized in that: The two friction dampers (405) are respectively threadedly connected to the left and right sides of the interior of the support plate (10), and one end of the damping rod (702) away from the movable block (701) is fixedly connected to the interior of the support plate (10).

9. The supporting coal hopper shock-absorbing structure for improving the earthquake resistance of the main power plant building of a thermal power plant according to claim 3 is characterized in that: The clamping block (504) is slidably connected inside the clamping slot (506), and the partition plate (505) is slidably connected inside the support plate (10).

10. The supporting coal hopper shock-absorbing structure for improving the earthquake resistance of the main power plant building of a thermal power plant according to claim 2, characterized in that: One end of the connecting rod (401) away from the isosceles trapezoidal block (402) is mounted on a side of the support rod (9) close to the support plate (10), and the outer periphery of one end of the support rod (9) close to the support plate (10) is slidably connected to the inside of the support plate (10).

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