Coal adding device for coal power generation

Abstract

The utility model relates to the technical field of coal adding, in particular to a coal adding device for coal power generation, which comprises a box body, a grinding device and an adding assembly, the adding assembly comprises a transport box positioned below the box body, a first rotating wheel positioned below the transport box and a second rotating wheel corresponding to the first rotating wheel, a first supporting plate is arranged between the first rotating wheel and the second rotating wheel, the upper surface of the first supporting plate is fixedly connected with an abutting spring, the end, away from the first supporting plate, of the abutting spring is fixedly connected with a second supporting plate, the upper surface of the first supporting plate is fixedly connected with a first abutting switch, and the upper surface of the first supporting plate is fixedly connected with an electric telescopic rod; when the coal crushing device is used, coal is crushed by the crushing device and then falls into the conveying box, the conveying box descends to enable the second supporting plate to descend and abut against the first abutting switch, the electric telescopic rod is started, the conveying box is disengaged from abutting against the second abutting switch, the first motor is started, the conveying box is driven to rotate, and the coal is poured into the storage groove.

Description

Technical Field

[0001] The utility model relates to an adding component, in particular to a coal adding device for coal power generation, belonging to the technical field of coal adding. Background Art

[0002] According to a coal adding device for coal-fired power generation disclosed in a Chinese patent document with announcement number CN216716275, it is basically described as comprising an adding barrel, a fixed bracket is fixedly installed on the upper surface of the adding barrel, a crushing and stirring device is arranged inside the adding barrel, a discharge port is connected to the right side of the bottom of the outer surface of the adding barrel, a discharge inclined plate is fixedly installed at the bottom of the inner wall of the adding barrel, a filter screen is fixedly installed at the bottom of the inner wall of the adding barrel, an air intake pipe is connected to the left side of the bottom of the adding barrel, a first driving motor is fixedly installed on the inner wall of the air intake pipe, a rotating fan blade is fixedly installed on the output end of the first driving motor, and a dust baffle is fixedly installed on the left side of the inner wall of the air intake pipe. The coal adding assembly for coal-fired power generation crushes the coal through the crushing and stirring device, filters the smaller coal onto the discharge plate through the filter plate, and then starts the first driving motor to drive the rotating fan to spray the coal on the discharge plate into the power generation device.

[0003] Based on the search of the above patents and in combination with the equipment in the prior art, it is found that when the above equipment is used, the first drive motor drives the fan to spray the coal on the discharge plate into the power generation device. This will require the first drive motor and the fan to always keep rotating. If the first drive motor stops rotating, the coal on the discharge plate is easy to accumulate. At this time, it is difficult to add coal to the power generation device by starting the first drive motor to drive the fan. However, when the rotation state is always maintained, the coal on the discharge plate will be continuously added to the power generation device. This causes the coal to be covered by the subsequently added coal before it is fully burned in the power generation device, resulting in waste due to excessive addition of coal.

[0004] Therefore, there is an urgent need to improve the coal adding device for coal-fired power generation to solve the above-mentioned problems. Utility Model Content

[0005] The utility model aims to provide a coal adding device for coal power generation, wherein the coal is put into the crushing device through the feed hopper, and the coal is crushed after the rotation of two crushing rollers, and the crushed coal falls into the transport box below through the discharge port, and when the coal falling into the transport box reaches a certain weight, the transport box is lowered, so that the bottom surface of the transport box and the interference rod are mutually interfered, driving the second support plate to descend and then touch the first interference switch, and starting the electric telescopic rod, so that the electric telescopic rod drives the blocking block to contract, and the interference between the transport box and the second interference switch is disengaged, and the first motor is turned on and rotated, driving the transport box to rotate, so that the coal in the transport box is poured into the storage trough, and then the coal is added to the power generation device through the sliding storage trough.

[0006] In order to achieve the above-mentioned purpose, the main technical scheme adopted by the utility model includes: a box body, a crushing device and an adding component, the adding component includes a transport box located below the box body, a first rotating wheel located below the transport box and a second rotating wheel corresponding to the first rotating wheel, the first rotating wheel and the second rotating wheel are fixedly connected by a U-shaped rod, the first rotating wheel and the second rotating wheel are both provided with a slide groove, a sliding rod is slidably connected in the slide groove, one end of the sliding rod away from the slide groove is fixedly connected to the lower surface of the transport box, the circumferential outer walls of the first rotating wheel and the second rotating wheel are fixedly connected to a support spring, the other end of the support spring is fixedly connected to the lower surface of the transport box, and the support spring is sleeved on the outer wall of the sliding rod;

[0007] A first support plate is provided between the first rotating wheel and the second rotating wheel, a resistance spring is fixedly connected to the upper surface of the first supporting plate, an end of the resistance spring away from the first supporting plate is fixedly connected to the second supporting plate, a resistance rod is fixedly connected to the upper surface of the second supporting plate, a first resistance switch is fixedly connected to the upper surface of the first supporting plate, an electric telescopic rod is fixedly connected to the upper surface of the first supporting plate, a blocking block is fixedly connected to the output end of the electric telescopic rod, the electric telescopic rod is electrically connected to the first resistance switch, a plurality of support rods are fixedly connected to the inner wall of the circumference of the first rotating wheel, and a plurality of support rods are commonly fixedly connected to a swivel at one end of the plurality of support rods away from the first rotating wheel, and a first rotating rod is fixedly connected inside the swivel.

[0008] Preferably, a first motor is disposed at one end of the first rotating rod away from the supporting rod, a second contact switch is fixedly connected to one end of the blocking block close to the contact rod, and the second contact switch is electrically connected to the first motor.

[0009] Preferably, the crushing device includes two crushing rollers located in the box body, a second rotating rod fixedly connected to the two crushing rollers, and a gear fixed to one end of the two second rotating rods, the two gears are meshed with each other, one end of the two second rotating rods is rotatably connected to the inner wall of the box body, and the other end of the two second rotating rods extends to the outside of the box body, and a second motor is provided at the end of one of the second rotating rods away from the box body.

[0010] Preferably, a discharge port is provided at one end of the box body close to the transport box, a sealing plate is fixedly connected to the bottom surface of the box body, a movement groove is provided in the sealing plate, a movement plate is slidably connected in the movement groove, a tension spring is fixedly connected to the inner wall of one end of the movement groove close to the discharge port, and the other end of the tension spring is fixedly connected to the movement plate.

[0011] Preferably, the end of the first rotating rod away from the first motor is rotatably connected to the first support column, the end of the first rotating rod away from the first support column is rotatably connected to the second support column, the second support column corresponds to the first support column, the upper surface of the first support column is fixedly connected to a third support plate, the upper surface of the end of the third support plate away from the first support column is fixedly connected to the lower surface of the first support plate, and the lower surface of the first motor is fixedly connected to the third support column.

[0012] Preferably, a limiting rod is rotatably connected inside the abutment rod, and both ends of the limiting rod extend to below the circumferential inner walls of the first rotating wheel and the second rotating wheel.

[0013] Preferably, one end of the first support column away from the first rotating rod is fixedly connected to a base, and a material storage trough is slidably connected to the base.

[0014] Preferably, a feed hopper is fixedly connected to the upper end of the box body, a load-bearing plate is fixedly connected to the outer wall of the box body, and the lower surface of the second motor is fixedly connected to the load-bearing plate, and a plurality of load-bearing columns are fixedly connected between the load-bearing plate and the base.

[0015] The utility model has at least the following beneficial effects:

[0016] 1. After the coal is crushed by the crushing device, it falls into the transport box through the discharge port. When the coal reaches a certain weight, the transport box is lowered, and the resistance rod that resists the lower surface causes the second support plate and the first resistance switch to resist each other, and the electric telescopic rod is started, and the resistance between the second resistance switch on the blocking block and the transport box is disengaged to start the first electric drive, thereby driving the transport box to rotate, so that the coal in the transport box falls into the storage trough, and the sliding storage trough adds the coal to the power generation device, so as to realize the quantitative addition of coal to the power generation device.

[0017] 2. When the transport box moves to the bottom of the box body, one side of the transport box and one side of the moving plate collide with each other, causing the moving plate to slide and open the discharge port, so that the crushed coal falls into the transport box. When the coal in the transport box reaches a certain amount, the transport box drops out of the mutual conflict with the moving plate, and the moving plate closes the discharge port under the tension of the tension spring to prevent the coal from falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 The isometric structure diagram provided by the utility model Figure 1 ;

[0020] Figure 2 The isometric structure diagram provided by the utility model Figure 2 ;

[0021] Figure 3 A cross-sectional schematic diagram provided for the utility model;

[0022] Figure 4 The utility model provides Figure 3 A magnified schematic diagram of the structure at center A;

[0023] Figure 5 A schematic diagram of an added component provided by the utility model;

[0024] Figure 6 A schematic diagram of a crushing device provided by the utility model;

[0025] Figure 7 A schematic diagram of the box structure provided by the utility model;

[0026] Figure 8 The utility model provides Figure 7 A magnified schematic diagram of the structure at B in the middle;

[0027] Fig. 9 This is a schematic diagram of some parts provided by the utility model.

[0028] In the figure, 1, box body; 2, crushing device; 3, adding component; 4, transport box; 5, first rotating wheel; 6, second rotating wheel; 7, slide slot; 8, sliding rod; 9, supporting spring; 10, first supporting plate; 11, conflict spring; 12, second supporting plate; 13, conflict rod; 14, first conflict switch; 15, electric telescopic rod; 16, blocking block; 17, U-shaped rod; 18, supporting rod; 19, rotating ring; 20, first rotating rod; 21, first electric machine; 22, second resistance switch; 23, crushing roller; 24, second rotating rod; 25, gear; 26, second motor; 27, discharge port; 28, sealing plate; 29, moving groove; 30, moving plate; 31, tension spring; 32, first support column; 33, second support column; 34, third support plate; 35, third support column; 36, limit rod; 37, base; 38, storage trough; 39, feed hopper; 40, load-bearing plate; 41, load-bearing column. DETAILED DESCRIPTION

[0029] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0030] like Figure 1-Figure 9 As shown, the coal adding device for coal power generation provided in this embodiment includes a box body 1, a crushing device 2 and a quantitative adding component 3 for coal, the adding component 3 includes a transport box 4 located below the box body 1, a first rotating wheel 5 located below the transport box 4 and a second rotating wheel 6 corresponding to the first rotating wheel 5, a slide groove 7 is provided in the first rotating wheel 5 and the second rotating wheel 6, and each four adjacent slide grooves 7 of the first rotating wheel 5 and the second rotating wheel 6 form a group, a sliding rod 8 is slidably connected in the slide groove 7, and a limit is provided at the bottom 12 of the sliding rod 8 so that the sliding rod 8 will not slide out of the slide groove 7, and the end of the sliding rod 8 away from the slide groove 7 is fixedly connected to the lower surface of the transport box 4, and the sliding rod 8 slides in the slide groove 7 when the transport box 4 descends, while maintaining When connected with the first rotating wheel 5 and the second rotating wheel 6, it is convenient to lower the height of the transport box 4, and the first rotating wheel 5 and the second rotating wheel 6 can drive the transport box 4 to rotate at the same time when rotating. The circumferential outer walls of the first rotating wheel 5 and the second rotating wheel 6 are fixedly connected with support springs 9, and the other end of the support spring 9 is fixedly connected to the lower surface of the transport box 4, and the support spring 9 is sleeved on the outer wall of the sliding rod 8. The support spring 9 can play a role in supporting the transport box 4 when the coal falls into the transport box 4. When the gravity of the coal exceeds the elastic force of the support spring 9, the transport box 4 will fall to the lowest point, and after the coal in the transport box 4 falls, the sliding rod 8 slides upward in the slide groove 7 under the action of the support spring 9, so that the transport box 4 is reset;

[0031] Among them, Figure 1 and Fig. 9As shown, a first support plate 10 is provided between the first rotating wheel 5 and the second rotating wheel 6, and a resistance spring 11 is fixedly connected to the upper surface of the first support plate 10, and the end of the resistance spring 11 away from the first support plate 10 is fixedly connected to the second support plate 12, and the upper surface of the second support plate 12 is fixedly connected to a resistance rod 13, and the resistance rod 13 is pressed downward to drive the second support plate 12 to descend and compress the resistance spring 11, and the elastic force of the resistance spring 11 on the second support plate 12 is convenient for the resistance rod 13 to move upward and finally reset without external pressure, and a first resistance switch 14 is fixedly connected to the upper surface of the first support plate 10, and an electric telescopic rod 15 is fixedly connected to the upper surface of the first support plate 10, and a blocking block 16 is fixedly connected to the output end of the electric telescopic rod 15, and the electric telescopic rod 15 is electrically connected to the first resistance switch 14, and when the second support plate 12 resists the resistance switch, the electric telescopic rod 15 will be started, and the electric telescopic rod 15 will contract to drive the blocking block 16 to approach the second support plate 12. When one end of a support plate 10 moves, and when the second support plate 12 is out of contact with the first contact switch 14, the electric telescopic rod 15 is started again, so that the electric telescopic rod 15 drives the blocking block 16 to reset. After the resetting, one side of the blocking block 16 corresponds to the side of the transport box 4 rotated to the top of the contact rod 13, and the contact rod 13 is rotatably connected with the limiting rod 36, and the two ends of the limiting rod 36 extend to below the circumferential inner wall of the first rotating wheel 5 and the second rotating wheel 6, and there is a certain distance between the end of the limiting rod 36 close to the support rod 18 and the support rod 18, which will not affect the normal rotation of the first rotating wheel 5. When the outer walls at both ends of the limiting rod 36 conflict with the circumferential inner walls of the first rotating wheel 5 and the second rotating wheel 6, the height of the contact rod 13 is limited, which will not affect the rotation of the transport box 4 to the top of the contact rod 13, and the limiting rod 36 can rotate in the contact rod 13, which is convenient for reducing the friction between the first rotating wheel 5 and the second rotating wheel 6 and the limiting rod 36 when rotating.

[0032] Further, such as Figure 1 and Fig. 9As shown, the first rotating wheel 5 and the second rotating wheel 6 are fixedly connected by a U-shaped rod 17, and the U-shaped rod 17 cannot touch the electric telescopic rod 15, and will not affect the normal rotation of the first rotating wheel 5 and the second rotating wheel 6, and the rotation of the first rotating wheel 5 and the second rotating wheel 6 is kept synchronous, a plurality of support rods 18 are fixedly connected to the inner wall of the first rotating wheel 5, and a rotating ring 19 is fixedly connected to one end of the plurality of support rods 18 away from the first rotating wheel 5, a first rotating rod 20 is fixedly connected inside the rotating ring 19, and a first motor 21 is provided at one end of the first rotating rod 20 away from the support rods 18. The rotation of the first motor 21 drives the first rotating rod 20 to rotate, thereby driving the first rotating wheel 5 and the second rotating wheel 6 to rotate. The end of the blocking block 16 close to the interference rod 13 is fixedly connected to the second interference switch 22. The second interference switch 22 is electrically connected to the first motor 21. When one side of the transport box 4 conflicts with the second interference switch 22, the first motor 21 is turned off to keep the transport box 4 in a position where it conflicts with the second interference switch 22. When the electric telescopic rod 15 is retracted to, the second interference switch 22 is out of conflict with the transport box 4, and the first motor 21 is turned on to drive the transport box 4 to move.

[0033] Furthermore, if Figure 1 and Figure 2 As shown, the end of the first rotating rod 20 away from the first motor 21 is rotatably connected to the first support column 32, and the end of the first rotating rod 20 away from the first support column 32 is rotatably connected to the second support column 33, the second support column 33 corresponds to the first support column 32, the first support column 32 and the second support column 33 support the adding component 3, the upper surface of the first support column 32 is fixedly connected to the third support plate 34, the upper surface of the end of the third support plate 34 away from the first support column 32 is fixedly connected to the lower surface of the first support plate 10, the lower surface of the first motor 21 is fixedly connected to the third support column 35, the third support column 35 supports the first motor 21, the end of the first support column 32 away from the first rotating rod 20 is fixedly connected to the base 37, the base 37 is slidably connected to a storage trough 38, and the storage trough 38 is used to collect coal in the transport box 4.

[0034] like Figure 1 and Figure 6As shown, the crushing device 2 includes two crushing rollers 23 located in the box body 1, a second rotating rod 24 fixedly connected to the two crushing rollers 23, and a gear 25 fixed to one end of the two second rotating rods 24, the two gears 25 are meshed with each other, one end of the two second rotating rods 24 is rotatably connected to the inner wall of the box body 1, and the other end of the two second rotating rods 24 extends to the outside of the box body 1, and a second motor 26 is provided on the side of one of the second rotating rods 24 away from the box body 1, and the second motor 26 rotates to drive one of the second rotating rods 24 to make the two meshing gears 25 rotate inward at the same time, thereby driving The two crushing rollers 23 rotate inward at the same time, and a certain distance is set between the two crushing rollers 23 to facilitate the crushing of the coal. A feed hopper 39 is fixedly connected to the upper end of the box body 1. The feed hopper 39 is convenient for adding coal into the crushing device 2, which is beneficial to the crushing of the coal. A load-bearing plate 40 is fixedly connected to the outer wall of the box body 1, and the lower surface of the second motor 26 is fixedly connected to the load-bearing plate 40. A plurality of load-bearing columns 41 are fixedly connected between the load-bearing plate 40 and the base 37. The load-bearing columns 41 and the load-bearing plate 40 support the weight of the crushing device 2, the second motor 26 and the feed hopper 39 and also play a fixing role.

[0035] Further, such as Figure 1 and Figure 8 As shown, a discharge port 27 is provided at one end of the box body 1 near the resistance rod 13, which facilitates the crushed coal to slide into the transport box 4. A sealing plate 28 is fixedly connected to the bottom surface of the box body 1, and a moving groove 29 is provided in the sealing plate 28. A moving plate 30 is slidably connected in the moving groove 29. A tension spring 31 is fixedly connected to the inner wall of the moving groove 29 near one end of the discharge port 27, and the other end of the tension spring 31 is fixedly connected to the moving plate 30. The moving plate 30 is L-shaped. When the transport box 4 moves below the discharge port 27, one side of the moving plate 30 conflicts with one side of the transport box 4, and the moving plate 30 slides with the movement of the transport box 4 to open the discharge port 27. The crushed coal slides into the transport box 4 under the action of gravity. When one side of the transport box 4 is out of contact with one side of the moving plate 30, the moving plate 30 slides under the tension of the tension spring 31 to close the discharge port 27 to prevent the coal from falling.

[0036] like Figure 1-Figure 9As shown, the principle of a coal adding device for coal power generation provided by this embodiment is as follows: coal is added into the crushing device 2 through the feed hopper 39, the second motor 26 drives the crushing device 2 to rotate, and the coal is crushed, and the crushed coal slides through the box body 1 to the discharge port 27, the first motor 21 rotates to make the first rotating rod 20 drive the rotating ring 19, and the first rotating wheel 5 and the second rotating wheel 6 rotate accordingly to drive the transport box 4 to rotate, when one side of the transport box 4 moves to the discharge port 27, one side of the transport box 4 and one side of the moving plate 30 conflict with each other, the transport box 4 drives the moving plate 30 to slide in the moving groove 29, and the discharge port 27 is opened, and the crushed coal falls into the transport box 4, and when one side of the transport box 4 conflicts with the second conflict switch 22, the first motor 21 stops rotating, and the transport box 4 stops rotating, and the coal in the transport box 4 reaches a When the transport box 4 reaches a certain weight, the transport box 4 descends to make the sliding rod 8 slide in the slide groove 7 and then compress the supporting spring 9, and the transport box 4 descends while making the contact rod 13 descend so that the second support plate 12 compresses the contact spring 11. When the second support plate 12 conflicts with the first contact switch 14, the electric telescopic rod 15 is turned on to retract the electric telescopic rod 15. When the electric telescopic rod 15 drives the blocking block 16 to retract, the second contact switch 22 is out of conflict with the transport box 4, the first motor 21 is started to drive the transport box 4 to rotate. When the transport box 4 moves to the lower surface and is out of conflict with the contact rod 13, the second support plate 12 drives the contact rod 13 to move upward under the elastic force of the contact spring 11. When the second support plate 12 is out of conflict with the first contact switch 14, the electric telescopic rod 15 is started again, and the output end of the electric telescopic rod 15 drives the blocking block 16 After being reset with the second interference switch 22, when the outer walls at both ends of the limit rod 36 respectively interfere with the inner walls of the first rotating wheel 5 and the second rotating wheel 6, the interference rod 13 stops moving upward; when the transport box 4 descends to the second support plate 12 and interferes with the first interference switch 14, one side of the transport box 4 will be separated from the mutual interference with one side of the moving plate 30, and the moving plate 30 slides under the tension of the tension spring 31 to close the discharge port 27, and the transport box 4 rotates with the rotation of the first motor 21, and the coal inside falls into the storage trough 38, and the sliding storage trough 38 adds the coal to the power generation device. When there is no coal in the transport box 4, the sliding rod 8 will slide upward in the slide groove 7 under the elastic force of the support spring 9, so that the transport box 4 is reset.

[0037] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0038] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0039] The above description shows and describes several preferred embodiments of the utility model, but as mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A coal adding device for coal-fired power generation, comprising a housing (1), a crushing device (2) and an adding component (3), characterized in that: The adding component (3) comprises a transport box (4) located below the box body (1), a first rotating wheel (5) located below the transport box (4), and a second rotating wheel (6) corresponding to the first rotating wheel (5), the first rotating wheel (5) and the second rotating wheel (6) being fixedly connected via a U-shaped rod (17), a sliding groove (7) being provided in the first rotating wheel (5) and the second rotating wheel (6), a sliding rod (8) being slidably connected in the sliding groove (7), an end of the sliding rod (8) away from the sliding groove (7) being fixedly connected to the lower surface of the transport box (4), a supporting spring (9) being fixedly connected to the circumferential outer wall of the first rotating wheel (5) and the second rotating wheel (6), the other end of the supporting spring (9) being fixedly connected to the lower surface of the transport box (4), and the supporting spring (9) being sleeved on the outer wall of the sliding rod (8); A first support plate (10) is provided between the first rotating wheel (5) and the second rotating wheel (6); a resisting spring (11) is fixedly connected to the upper surface of the first supporting plate (10); an end of the resisting spring (11) away from the first supporting plate (10) is fixedly connected to the second supporting plate (12); a resisting rod (13) is fixedly connected to the upper surface of the second supporting plate (12); a first resisting switch (14) is fixedly connected to the upper surface of the first supporting plate (10); an electric telescopic rod (15) is fixedly connected to the upper surface of the first supporting plate (10); an output end of the electric telescopic rod (15) is fixedly connected to a blocking block (16); the electric telescopic rod (15) is electrically connected to the first resisting switch (14); a plurality of support rods (18) are fixedly connected to the inner wall of the circumference of the first rotating wheel (5); ends of the plurality of support rods (18) away from the first rotating wheel (5) are commonly fixedly connected to a rotating ring (19); a first rotating rod (20) is fixedly connected inside the rotating ring (19).

2. A coal adding device for coal-fired power generation according to claim 1, characterized in that: A first motor (21) is provided at one end of the first rotating rod (20) away from the supporting rod (18), and a second contact switch (22) is fixedly connected to one end of the blocking block (16) close to the contact rod (13), and the second contact switch (22) is electrically connected to the first motor (21).

3. A coal adding device for coal-fired power generation according to claim 2, characterized in that: The crushing device (2) comprises two crushing rollers (23) located in the housing (1), a second rotating rod (24) fixedly connected to the two crushing rollers (23), and a gear (25) fixed to one end of the two second rotating rods (24), the two gears (25) being meshed with each other, one end of the two second rotating rods (24) being rotatably connected to the inner wall of the housing (1), the other end of the two second rotating rods (24) extending to the outside of the housing (1), and a second motor (26) being provided at one end of one of the second rotating rods (24) away from the housing (1).

4. A coal adding device for coal-fired power generation according to claim 1, characterized in that: A discharge port (27) is provided at one end of the box body (1) close to the resistance rod (13); a sealing plate (28) is fixedly connected to the bottom surface of the box body (1); a moving groove (29) is provided in the sealing plate (28); a moving plate (30) is slidably connected in the moving groove (29); a tension spring (31) is fixedly connected to the inner wall of one end of the moving groove (29) close to the discharge port (27); the other end of the tension spring (31) is fixedly connected to the moving plate (30).

5. The coal adding device for coal-fired power generation according to claim 3, characterized in that: One end of the first rotating rod (20) away from the first motor (21) is rotatably connected to a first support column (32), and one end of the first rotating rod (20) away from the first support column (32) is rotatably connected to a second support column (33), the second support column (33) corresponds to the first support column (32), a third support plate (34) is fixedly connected to the upper surface of the first support column (32), an upper surface of an end of the third support plate (34) away from the first support column (32) is fixedly connected to the lower surface of the first support plate (10), and a third support column (35) is fixedly connected to the lower surface of the first motor (21).

6. The coal adding device for coal-fired power generation according to claim 1, characterized in that: The abutment rod (13) is rotatably connected to a limit rod (36), and both ends of the limit rod (36) extend below the circumferential inner walls of the first rotating wheel (5) and the second rotating wheel (6).

7. A coal adding device for coal-fired power generation according to claim 5, characterized in that: One end of the first support column (32) away from the first rotating rod (20) is fixedly connected to a base (37), and a material storage trough (38) is slidably connected to the base (37).

8. A coal adding device for coal-fired power generation according to claim 7, characterized in that: A feed hopper (39) is fixedly connected to the upper end of the box body (1), a load-bearing plate (40) is fixedly connected to the outer wall of the box body (1), the load-bearing plate (40) is fixedly connected to the lower surface of the second motor (26), and a plurality of load-bearing columns (41) are fixedly connected between the load-bearing plate (40) and the base (37).

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