Power plant coal conveying belt anti-blocking device

Abstract

The utility model discloses a power plant coal conveying belt anti -blocking device belongs to coal conveying equipment field, the top fixedly connected with the protection frame for preventing coal conveying to drop of drive belt, and the top of protection frame is equipped with feed inlet and mounting hole, and the top of protection frame is fixedly connected with the front -mounted crushing mechanism for carrying out the crushing treatment to the input coal above feed inlet, and the device is through setting front -mounted crushing mechanism and horizontal clearing block component, realizes the double anti -blocking effect of source prevention and adds the unblocking of block, and the front -mounted crushing mechanism can carry out the pretreatment to the raw coal, and the crushing big -sized material reduces the hidden danger of block from the source, and the vibration motor can effectively avoid coal adsorption accumulation, ensures the smooth feeding, and the horizontal clearing block component is the manual unblocking structure after blocking, need not to stop the machine and dismount, and the operation efficiency is improved greatly, and the whole device compact structure can adapt to the existing power plant coal conveying demand, and the dismounting is convenient, and the later maintenance cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of coal conveying equipment, specifically relating to an anti-blocking device for coal conveying belts in power plants. Background Technology

[0002] In power plant coal conveying systems, the conveyor belt is the core equipment for coal transport, and its operational stability directly affects the power plant's normal power generation efficiency. However, power plants often face coal blockage problems during coal conveying: on the one hand, large pieces of coal gangue, frozen coal, or wet, sticky coal lumps may be mixed in with the raw coal, which are prone to accumulating at the feed inlet of the conveyor belt, leading to blockage of the feed channel; on the other hand, when the conveyor belt's conveying capacity fluctuates, coal can easily accumulate too high on the belt, exceeding the belt's carrying capacity, which can then cause belt misalignment, material spillage, or even belt jamming and shutdown.

[0003] The existing transmission belt lacks a pre-treatment mechanism, and large pieces of coal gangue, frozen coal, or wet sticky coal may be mixed in with the raw coal. Large pieces of material entering directly can easily cause blockages. Moreover, it is quite troublesome to clear blockages after they occur. Stopping the machine to clear blockages will affect the work progress. It is necessary to reduce the risk of blockages from the source.

[0004] Therefore, this application proposes an anti-blocking device for coal conveyor belts in power plants to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this invention is to provide an anti-blocking device for coal conveyor belts in power plants to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a power plant coal conveyor belt anti-blocking device, including a transmission belt, a protective frame for preventing coal from falling off the top of the transmission belt, a feed inlet and an installation hole on the top of the protective frame, a pre-crushing mechanism for crushing the input coal fixedly connected above the feed inlet on the top of the protective frame, and a limiting mechanism for limiting the height of coal on the transmission belt fixedly connected in the installation hole of the protective frame.

[0007] The pre-crushing mechanism includes a feed box fixedly connected to the top of the protective frame, a feed hopper fixedly connected to the top of the feed box, a vibrating motor fixedly connected to the side of the feed box, a reduction motor fixedly connected to the front of the feed box, one end of the crushing component fixedly connected to the inner wall of the feed box, the output end of the reduction motor passing through the feed box and fixedly connected to the other end of the crushing component, and a horizontal unblocking component for forcibly clearing coal blockage on the transmission belt fixedly connected to the side of the feed box away from the vibrating motor.

[0008] The crushing assembly includes a bearing fixedly connected to the inner wall of the feed box, a transmission column fixedly connected to the inner ring of the bearing, a plurality of collars fixedly connected to the outer surface of the transmission column, and crushing parts fixedly connected to the outer surface of the collars.

[0009] Using the above scheme, the transmission belt is a conventional coal conveying belt used in power plants to carry and transport coal. The protective frame has a U-shaped structure, which can effectively prevent coal from falling from both sides during the transmission process, avoiding material waste and environmental pollution. The feed inlet of the protective frame is used to receive coal transported from the outside, and the mounting hole is used to install the limiting mechanism. The front crushing mechanism can crush the input raw coal, crushing large pieces of coal gangue, frozen coal, etc., reducing the risk of blockage from the source. The limiting mechanism can limit the accumulation height of coal on the transmission belt, preventing the belt from running off track or getting blocked due to excessive coal.

[0010] The feed box has a rectangular box structure to provide space for crushing. The feed hopper is funnel-shaped with its large opening facing upwards to facilitate the receipt of external raw coal. When the vibrating motor starts, it can drive the entire feed box to vibrate slightly to prevent coal from adsorbing and accumulating on the inner wall of the feed box and ensure that the coal falls smoothly. The geared motor provides stable low-speed rotation power. The geared motor drives the crushing components to rotate, thereby crushing the coal. When coal accumulates and blocks the conveyor belt below the feed inlet, the horizontal unblocking component can be used to forcibly clear the blocked coal and restore smooth conveying.

[0011] The bearing is fixedly connected to the inner wall of the feed box through the bearing housing, providing rotational support for the transmission column. The transmission column transmits the rotational power of the geared motor. Multiple collars are fixed on the outer surface of the transmission column, and the crushing parts are fixedly installed on the collars. The crushing parts are made of high-strength alloy steel, which has good wear resistance and impact resistance. When rotating, they can impact and squeeze the coal to achieve the crushing function.

[0012] In the above scheme, it should be noted that both the vibration motor and the geared motor are electrically connected to an external power source.

[0013] In a preferred embodiment, the bottom of the feed box is provided with a discharge port, which is located above the feed port at the top of the protective frame.

[0014] With the above solution, the bottom discharge port of the feed box matches the size of the top feed port of the protective frame, and the discharge port is directly above the feed port of the protective frame, which can ensure that the coal processed by the crushing component falls directly into the transmission belt inside the protective frame through the discharge port.

[0015] In a preferred embodiment, the crushing assembly includes a connecting block and an insert block fixedly connected to the outer surface of the collar. The top of the connecting block is threaded with a fixing bolt, and the top of the insert block has a threaded hole that mates with the fixing bolt. A crushing hammer is fixedly connected to the end of the insert block away from the connecting block, and an insertion hole is provided on the side end of the connecting block.

[0016] Using the above solution, the insertion hole on the side of the connecting block is adapted to the insertion block. The insertion block is inserted into the insertion hole to form a preliminary positioning. The fixing bolt connected by the thread on the top of the connecting block cooperates with the threaded hole on the top of the insertion block to firmly fix the insertion block on the connecting block, preventing the insertion block from loosening during the crushing process. This detachable structure makes it easy to replace the breaker hammer after it wears out, without having to disassemble the entire crushing component, reducing maintenance costs. At the same time, the size or number of breaker hammers can be adjusted to meet different crushing needs.

[0017] In a preferred embodiment, the horizontal unblocking assembly includes two support rods fixedly connected to one side of the feed box, with a coal retaining plate fixedly connected to one end of each support rod. Two sliding rods are slidably connected to the coal retaining plate, and a push plate is fixedly connected to the end of each sliding rod near the transmission belt.

[0018] Using the above scheme, two support rods are fixed on one side of the feed box and are symmetrically distributed to provide stable support for the coal retaining plate. The coal retaining plate provides sliding support for the sliding rods and also plays a certain role in blocking the input coal on the conveyor belt. The two sliding rods are slidably connected to the coal retaining plate and can move back and forth in the horizontal direction. When the conveyor belt is blocked by coal, pushing the sliding rods can drive the push plate to move towards the blockage, pushing away the accumulated coal and achieving forced unblocking. The double sliding rods and double push plates expand the unblocking coverage area and improve the unblocking efficiency.

[0019] In a preferred embodiment, the two slide rods are fixedly connected to a horizontal grip plate at the end away from the push plate. The push plate consists of a circular plate and two T-shaped plates, with the two T-shaped plates fixedly connected to the outer surface of the circular plate.

[0020] Using the above solution, the horizontal grip plate is easy for operators to hold with both hands and push the two sliding rods at the same time, avoiding the force imbalance caused by pushing with a single rod and improving operational stability. The circular plate can concentrate and push the blocked coal. The two T-shaped plates are symmetrically distributed on the outer surface of the circular plate, which can disperse the accumulated coal to both sides and effectively improve the unblocking effect.

[0021] In a preferred embodiment, the limiting mechanism includes a mounting base fixedly connected to the mounting hole of the protective frame, a support column fixedly connected to the bottom of the mounting base, and a limiting baffle fixedly connected to the end of the support column away from the mounting base.

[0022] Using the above scheme, the mounting base acts as a support column to provide stable support. The limit baffle is arc-shaped. When the coal accumulation height on the transmission belt exceeds the limit baffle, the limit baffle can prevent the coal from continuing to accumulate and guide the excess coal to disperse to both sides, avoiding belt deviation or blockage caused by excessive coal accumulation.

[0023] In a preferred embodiment, the top of the limiting baffle is fixedly connected to two support blocks, both of which are fixedly connected to the inner wall of the protective frame.

[0024] By adopting the above scheme, the two support blocks can effectively improve the stability of the limiting baffle, greatly enhance the impact resistance of the limiting baffle, and prevent the limiting baffle from deforming or shifting due to excessive pressure from coal accumulation.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] This device achieves a dual anti-clogging effect by incorporating a pre-crushing mechanism and a horizontal unblocking component. The pre-crushing mechanism pre-processes the raw coal, crushing large pieces of material to reduce the risk of clogging at the source. Combined with a vibrating motor, it effectively prevents coal adsorption and accumulation, ensuring smooth feeding. The horizontal unblocking component is a manual unblocking structure that eliminates the need for machine shutdown and disassembly, significantly improving operational efficiency. The device has a compact overall structure, adaptable to the coal conveying needs of existing power plants, and is easy to assemble and disassemble, reducing subsequent maintenance costs.

[0027] The limiting mechanism can control the height of coal accumulation on the surface of the transmission belt, effectively blocking coal exceeding the safe range and guiding excess coal to be evenly dispersed to both sides, avoiding blockage problems caused by excessive coal accumulation during the conveying process. At the same time, the limiting baffle is supported by the support column and two support blocks, which can greatly enhance the impact resistance of the limiting baffle, prevent the limiting baffle from deforming or shifting due to coal impact, and ensure the stable operation of the limiting function. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the overall front structure of this utility model;

[0030] Figure 3 This is a schematic diagram of the front crushing mechanism of this utility model;

[0031] Figure 4 This is a schematic diagram of the crushing component structure of this utility model;

[0032] Figure 5 This is a schematic diagram of the structure of the crushing component of this utility model;

[0033] Figure 6 This is a schematic diagram of the horizontal unblocking component structure of this utility model;

[0034] Figure 7 This is a schematic diagram of the limiting mechanism of this utility model.

[0035] In the diagram: 1. Front crushing mechanism; 2. Protective frame; 3. Limiting mechanism; 4. Transmission belt; 11. Feed hopper; 12. Crushing assembly; 13. Feed box; 14. Vibrating motor; 15. Horizontal unblocking assembly; 16. Gear motor; 121. Bearing; 122. Crushing parts; 123. Transmission column; 124. Collar; 1221. Connecting block; 1222. Fixing bolt; 1223. Insert block; 1224. Crusher; 151. Support rod; 152. Coal retaining plate; 153. Sliding rod; 154. Push plate; 31. Mounting base; 32. Support column; 33. Limiting baffle. Detailed Implementation

[0036] Please see Figure 1-7 This utility model provides a power plant coal conveyor belt anti-blocking device, including a transmission belt 4, a protective frame 2 for preventing coal from falling off the top of the transmission belt 4, a feed inlet and an installation hole on the top of the protective frame 2, a pre-crushing mechanism 1 for crushing the input coal is fixedly connected above the feed inlet on the top of the protective frame 2, and a limiting mechanism 3 for limiting the height of coal on the transmission belt 4 is fixedly connected in the installation hole of the protective frame 2.

[0037] The pre-crushing mechanism 1 includes a feed box 13 fixedly connected to the top of the protective frame 2. A feed hopper 11 is fixedly connected to the top of the feed box 13. A vibrating motor 14 is fixedly connected to the side of the feed box 13. A reduction motor 16 is fixedly connected to the front of the feed box 13. One end of the crushing component 12 is fixedly connected to the inner wall of the feed box 13. The output end of the reduction motor 16 passes through the feed box 13 and is fixedly connected to the other end of the crushing component 12. A horizontal unblocking component 15 for forcibly clearing the coal blockage on the transmission belt 4 is fixedly connected to the side of the feed box 13 away from the vibrating motor 14.

[0038] The crushing assembly 12 includes a bearing 121 fixedly connected to the inner wall of the feed box 13. A transmission column 123 is fixedly connected to the inner ring of the bearing 121. A plurality of collars 124 are fixedly connected to the outer surface of the transmission column 123. A crushing component 122 is fixedly connected to the outer surface of the collars 124.

[0039] The transmission belt 4 is a conventional transmission belt for power plants, used to carry and transport coal. The protective frame 2 has a U-shaped structure, which can effectively prevent coal from falling from both sides during the transmission of the transmission belt 4, avoiding material waste and environmental pollution. The feed inlet of the protective frame 2 is used to receive coal transported from the outside, and the mounting hole is used to install the limiting mechanism 3. The front crushing mechanism 1 can crush the input raw coal, crush large pieces of coal gangue, frozen coal, etc., and reduce the risk of blockage from the source. The limiting mechanism 3 can limit the accumulation height of coal on the transmission belt 4, and prevent the belt from running off track or getting blocked due to excessive coal.

[0040] The feed box 13 has a rectangular box structure to provide space for crushing. The feed hopper 11 is funnel-shaped with its large opening facing upwards to facilitate receiving external raw coal. When the vibration motor 14 starts, it can drive the feed box 13 to vibrate slightly to prevent coal from adsorbing and accumulating on the inner wall of the feed box 13 and ensure that the coal falls smoothly. The reduction motor 16 provides stable low-speed rotation power. The reduction motor 16 drives the crushing component 12 to rotate to crush the coal. When coal accumulates and blocks the conveyor belt 4 below the feed inlet, the horizontal unblocking component 15 can be used to forcibly clear the blocked coal and restore smooth conveying.

[0041] The bearing 121 is fixedly connected to the inner wall of the feed box 13 through the bearing seat, providing rotational support for the transmission column 123. The transmission column 123 transmits the rotational power of the geared motor 16. Multiple collars 124 are fixed on the outer surface of the transmission column 123. The collars 124 are fixedly installed with the crushing component 122. The crushing component 122 is made of high-strength alloy steel, which has good wear resistance and impact resistance. When rotating, it can impact and squeeze the coal to achieve the crushing function.

[0042] The bottom of the feed box 13 is provided with a discharge port, which is located above the feed port at the top of the protective frame 2;

[0043] The bottom discharge port of the feed box 13 is matched with the top feed port of the protective frame 2 in size, and the discharge port is directly above the feed port of the protective frame 2, which can ensure that the coal processed by the crushing component 12 falls directly into the transmission belt 4 inside the protective frame 2 through the discharge port.

[0044] The crushing assembly 12 includes a connecting block 1221 and an insert block 1223 fixedly connected to the outer surface of the collar 124. The top of the connecting block 1221 is threadedly connected to a fixing bolt 1222, and the top of the insert block 1223 is provided with a threaded hole that mates with the fixing bolt 1222. The end of the insert block 1223 away from the connecting block 1221 is fixedly connected to a breaker hammer 1224, and the side end of the connecting block 1221 is provided with an insertion hole.

[0045] The insertion hole on the side of the connecting block 1221 is adapted to the insertion block 1223. The insertion block 1223 is inserted into the insertion hole to form a preliminary positioning. The fixing bolt 1222 threaded on the top of the connecting block 1221 cooperates with the threaded hole on the top of the insertion block 1223 to firmly fix the insertion block 1223 on the connecting block 1221, so as to prevent the insertion block 1223 from loosening during the crushing process. This detachable structure makes it easy to replace the breaker hammer 1224 after it is worn without disassembling the entire crushing component 12, reducing maintenance costs. At the same time, the size or number of breaker hammers 1224 can be adjusted to meet different crushing needs.

[0046] The horizontal unblocking assembly 15 includes two support rods 151 fixedly connected to one side of the feed box 13. One end of the two support rods 151 is fixedly connected to a coal baffle plate 152. Two sliding rods 153 are slidably connected to the coal baffle plate 152. Push plates 154 are fixedly connected to the end of the two sliding rods 153 near the transmission belt 4.

[0047] Two support rods 151 are fixed on one side of the feed box 13 and are symmetrically distributed to provide stable support for the coal retaining plate 152. The coal retaining plate 152 provides sliding support for the sliding rod 153 and at the same time plays a certain role in blocking the input coal on the transmission belt 4. The two sliding rods 153 are slidably connected to the coal retaining plate 152 and can move back and forth in the horizontal direction. When the transmission belt 4 is blocked by coal, pushing the sliding rod 153 can drive the push plate 154 to move towards the blockage, push away the accumulated coal, and achieve forced unblocking. The double sliding rods 153 and the double push plates 154 expand the unblocking coverage area and improve the unblocking efficiency.

[0048] Two sliding rods 153 are fixedly connected to a horizontal grip plate at one end away from the push plate 154. The push plate 154 is composed of a circular plate and two T-shaped plates. The outer surface of the circular plate is fixedly connected to the two T-shaped plates.

[0049] The horizontal grip plate is easy for operators to hold with both hands and push the two sliding rods 153 at the same time, avoiding the force imbalance caused by pushing a single rod and improving operational stability. The circular plate can concentrate and push the blocked coal. The two T-shaped plates are symmetrically distributed on the outer surface of the circular plate, which can disperse the accumulated coal to both sides and effectively improve the unblocking effect.

[0050] The limiting mechanism 3 includes a mounting base 31 fixedly connected in the mounting hole of the protective frame 2, a support column 32 fixedly connected to the bottom of the mounting base 31, and a limiting baffle 33 fixedly connected to the end of the support column 32 away from the mounting base 31.

[0051] The mounting base 31 provides stable support for the support column 32. The limiting baffle 33 is arc-shaped. When the coal accumulation height on the transmission belt 4 exceeds the limiting baffle 33, the limiting baffle 33 can prevent the coal from continuing to accumulate and guide the excess coal to disperse to both sides, avoiding belt deviation or blockage caused by excessive coal.

[0052] The top of the limiting baffle 33 is fixedly connected to two support blocks, both of which are fixedly connected to the inner wall of the protective frame 2;

[0053] The two support blocks can effectively improve the stability of the limit baffle 33, greatly enhance the impact resistance of the limit baffle 33, and prevent the limit baffle 33 from deforming or shifting due to excessive pressure from coal accumulation.

[0054] During coal conveying operations, raw coal enters the feed box 13 through the feed hopper 11. At the same time, the reduction motor 16 and the vibration motor 14 are started. The output end of the reduction motor 16 drives the transmission column 123 to rotate. The transmission column 123 drives the crusher hammer 1224 of the crushing component 122 to rotate through the collar 124, which impacts and crushes the raw coal entering the feed box 13. If the raw coal with a large volume is not crushed, it cannot enter the next stage. The vibration motor 14 drives the feed box 13 to vibrate slightly to prevent the coal from adsorbing and accumulating on the inner wall of the feed box 13. The crushed coal falls into the transmission belt 4 inside the protective frame 2 through the discharge port at the bottom of the feed box 13.

[0055] During the process of conveying coal by the transmission belt 4, the limiting baffle 33 of the limiting mechanism 3 can limit the coal accumulation height. If the coal height exceeds the limiting baffle 33, the limiting baffle 33 will force the excess coal to disperse to both sides to prevent the belt from running off track or getting blocked due to excessive coal height.

[0056] If the coal on the conveyor belt 4 is partially blocked below the feed inlet of the protective frame 2 due to reasons such as wet and sticky coal, the operator can hold the horizontal grip plate of the horizontal unblocking component 15 and push the slide bar 153 to drive the push plate 154 to move towards the blockage. The circular plate and T-shaped plate of the push plate 154 can push away the accumulated coal to achieve rapid unblocking and restore smooth coal conveying.

[0057] Before and after use, different shapes and quantities of crushing parts 122 can be replaced according to crushing needs to meet the crushing work scenarios under complex conditions. When the breaker hammer 1224 is worn and needs to be replaced, there is no need to disassemble the entire crushing assembly 12. Just separate the fixing bolt 1222 from the threaded hole on the top of the insert block 1223, replace the new insert block 1223 and the breaker hammer 1224 and reinstall them. The maintenance and use costs are low.

[0058] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0059] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0060] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0061] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0062] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A device for preventing blockage of a coal conveyor belt in a power plant, comprising a transmission belt (4), characterized in that: The top of the transmission belt (4) is fixedly connected to a protective frame (2) for preventing coal from falling. The top of the protective frame (2) is provided with a feed inlet and an installation hole. The top of the protective frame (2) is fixedly connected above the feed inlet to a pre-crushing mechanism (1) for crushing the input coal. The installation hole of the protective frame (2) is fixedly connected to a limiting mechanism (3) for limiting the height of coal on the transmission belt (4). The pre-crushing mechanism (1) includes a feed box (13) fixedly connected to the top of the protective frame (2), a feed hopper (11) fixedly connected to the top of the feed box (13), a vibration motor (14) fixedly connected to the side of the feed box (13), a reduction motor (16) fixedly connected to the front of the feed box (13), a crushing component (12) fixedly connected to the inner wall of the feed box (13), the output end of the reduction motor (16) passes through the feed box (13) and is fixedly connected to the other end of the crushing component (12), and a horizontal unblocking component (15) for forcibly clearing the coal blockage on the transmission belt (4) is fixedly connected to the side of the feed box (13) away from the vibration motor (14); The crushing assembly (12) includes a bearing (121) fixedly connected to the inner wall of the feed box (13), a transmission column (123) fixedly connected to the inner ring of the bearing (121), a plurality of collars (124) fixedly connected to the outer surface of the transmission column (123), and a crushing component (122) fixedly connected to the outer surface of the collars (124).

2. The anti-blocking device for a coal conveyor belt in a power plant according to claim 1, characterized in that: The bottom of the feed box (13) is provided with a discharge port, which is located above the top feed port of the protective frame (2).

3. The anti-blocking device for a coal conveyor belt in a power plant according to claim 1, characterized in that: The crushing assembly (12) includes a connecting block (1221) and an insert block (1223) fixedly connected to the outer surface of the collar (124). The top of the connecting block (1221) is threaded with a fixing bolt (1222), and the top of the insert block (1223) is provided with a threaded hole that mates with the fixing bolt (1222). The end of the insert block (1223) away from the connecting block (1221) is fixedly connected with a breaker hammer (1224), and the side end of the connecting block (1221) is provided with an insertion hole.

4. The anti-blocking device for a coal conveyor belt in a power plant according to claim 1, characterized in that: The horizontal unblocking assembly (15) includes two support rods (151) fixedly connected to one side of the feed box (13). One end of the two support rods (151) is fixedly connected to a coal baffle plate (152). Two sliding rods (153) are slidably connected on the coal baffle plate (152). Push plates (154) are fixedly connected to the end of the two sliding rods (153) near the transmission belt (4).

5. The anti-blocking device for a coal conveyor belt in a power plant according to claim 4, characterized in that: Two slide bars (153) are fixedly connected to a horizontal grip plate at the end away from the push plate (154). The push plate (154) is composed of a circular plate and two T-shaped plates, and the two T-shaped plates are fixedly connected to the outer surface of the circular plate.

6. The anti-blocking device for a coal conveyor belt in a power plant according to claim 1, characterized in that: The limiting mechanism (3) includes a mounting base (31) fixedly connected in the mounting hole of the protective frame (2), a support column (32) fixedly connected to the bottom of the mounting base (31), and a limiting baffle (33) fixedly connected to the end of the support column (32) away from the mounting base (31).

7. The anti-blocking device for a coal conveyor belt in a power plant according to claim 6, characterized in that: The top of the limiting baffle (33) is fixedly connected to two support blocks, both of which are fixedly connected to the inner wall of the protective frame (2).

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