Conveying device for fuel in fossil fuel power station

Abstract

A conveying device used for fuel in a fossil fuel power station. The conveying device comprises a bearing unit (100), which comprises a base component (101), a support bed (102) arranged on a side face of the base component (101), a plurality of bearing components (103) arranged on the support bed (102), driving wheels (104) symmetrically arranged at two ends of the support bed (102), and a conveyor belt (105) sleeved on the two driving wheels (104); and a conveying unit (200), which comprises a conveying component (201) located above the base component (101) and four helical guide blades (202) arranged inside the conveying component (201), wherein the four helical guide blades (202) are helically distributed in a staggered manner inside the conveying component (201). The present invention changes the manner in which fuel is vertically conveyed during a conventional conveying process. The helical guide blades (202) in a helical arrangement are used to buffer vertically falling fuel, thereby reducing the impact of the fuel on the conveyor belt (105) and prolonging the service life of the conveyor belt (105); and by means of providing fuel shifting units (400) to push and stir the fuel in conveyance, the occurrence of a blockage in the conveying unit is effectively avoided, and the conveying effect is ensured.

Description

A transmission device for fuel use in thermal power plants Technical Field

[0001] The present invention relates to the technical field of fuel transportation, and in particular to a fuel transportation device used in thermal power plants. Background Art

[0002] Thermal power plant fuel generally refers to the fuel required for thermal power plants to produce electricity, including solid fuel, liquid fuel and gas fuel. During the use of solid fuel, it needs to be transported through a transmission device. Common transmission devices include transfer vehicles, belt conveyors, etc.

[0003] Among them, during the use of the belt conveyor, solid fuel will be transported through the coal conveying pipeline and fall onto the belt conveyor, and then transported to the designated area through the belt conveyor. In actual use, the solid fuel (coal) will form a coal flow through the coal conveying pipeline. The coal flow composed of solid particles falls vertically onto the belt of the conveyor belt. At the falling point, the belt will be directly impacted by the falling material, which will cause the belt to wear faster and affect its service life. Therefore, in order to solve such problems, we propose a transmission device for fuel use in thermal power plants to solve such problems. Summary of the Invention

[0004] In view of the above-mentioned problems existing in the existing transmission devices used for fuel in thermal power plants, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide a fuel transmission device for use in thermal power plants, the purpose of which is to improve the transmission efficiency and extend the service life of the transmission device.

[0006] To solve the above technical problems, the present invention provides the following technical solution: comprising: a carrying unit, comprising a base component, a support bed arranged on a side of the base component, multiple sets of supporting components arranged on the support bed, driving wheels symmetrically arranged at both ends of the support bed, and a transmission belt sleeved on the two sets of driving wheels;

[0007] A conveying unit, comprising a conveying component located above the base component, and four groups of spiral guide blades disposed inside the conveying component, wherein the four groups of spiral guide blades are staggered and distributed in a spiral manner inside the conveying component, and a clearance groove is provided between every two groups of spiral guide blades;

[0008] A drive unit, comprising a drive motor located at the center of the bottom end of the conveying component, a drive component disposed above the drive motor and extending upward to the axis center of the conveying component, a connecting shaft disposed at the top end of the drive component, and a plurality of limit rings evenly distributed on the drive component; and

[0009] The material-dipping unit includes a material-dipping assembly that is sleeved on the driving component and located between the limiting rings, two groups of digging frames symmetrically arranged on the material-digging assembly, an abutting component located between the two groups of digging frames, and a tightening component arranged below the material-digging assembly. The position and quantity of the material-digging unit correspond to the give-way groove.

[0010] As a preferred solution of the transmission device for use in thermal power plants as described in the present invention, the base component includes two groups of base plates located on both sides below the conveying component, a transmission bin opened inside the base plates, an adapter plate arranged on the side of the transmission bin, and a protective frame arranged above the other side of the transmission bin.

[0011] As a preferred solution of the transmission device for use in thermal power plants described in the present invention, the supporting component includes a bottom roller located above the support bed, fixed blocks arranged on both sides of the bottom roller, and the fixed blocks are fixedly connected to the support bed, and side rollers are inserted into the outside of the fixed blocks in an inclined state.

[0012] As a preferred solution of the transmission device for use in thermal power plants as described in the present invention, the conveying component includes a conveying barrel located above the base component, a feed hopper arranged at the top of the conveying barrel, a feed channel opened in the conveying barrel, and a fixing rod arranged on the inner side of the top of the feed channel.

[0013] As a preferred solution of the transmission device for fuel used in thermal power plants described in the present invention, the upper and lower surfaces of the spiral guide vane are respectively the top surface and the bottom surface, the two ends of the spiral guide vane are respectively the high end and the low end, the horizontal height of the high end is greater than the low end, the overall direction of the spiral guide vane is spirally twisted from the high end to the low end, the high end and the low end of each two groups of spiral guide vanes are close, and the spiral direction is consistent.

[0014] As a preferred solution of the transmission device for use in thermal power plants according to the present invention, the driving component includes a rotating shaft coaxial with the conveying component in the vertical direction, a side receiving groove opened on the outside of the rotating shaft, an engaging block arranged in the side receiving groove, and a support spring located between the side receiving groove and the engaging block.

[0015] As a preferred solution of the transmission device for use in thermal power plants described in the present invention, the material shifting assembly includes a ring sleeved on the driving component, teeth arranged on the inner side of the ring, a shifting rod arranged at the outer end of one side of the ring, side sliding grooves opened on the front and rear sides of the shifting rod, and a cross receiving groove opened in the vertical direction in the shifting rod.

[0016] As a preferred solution of the transmission device for use in thermal power plants as described in the present invention, the toggle frame includes a support rod located in the cross storage groove, and limiting shafts symmetrically arranged at both ends of the support rod, and the limiting shaft located at the end of the support rod extends into the side sliding groove.

[0017] As a preferred solution of the transmission device for fuel used in thermal power plants described in the present invention, the abutment component includes a roller located between the two groups of the shifting frames, and connecting ears symmetrically arranged on both sides of the roller, and the roller is rotatably connected to the connecting ears.

[0018] As a preferred embodiment of the transmission device for fuel used in thermal power plants according to the present invention, the tightening component includes a sleeve located below the shifting rod, an extension rod arranged on one side of the sleeve, a spring groove opened inside the sleeve, and one end of the extension rod extending into the spring groove, a contraction spring arranged between the sleeve and the extension rod, and the contraction spring is located in the spring groove, and rotating ears are provided at the end of the sleeve and the head end of the extension rod.

[0019] The beneficial effects of the present invention are: changing the vertical fuel transportation mode in the traditional transportation process, using a spiral spiral guide vane to unload the vertically falling fuel, reducing the impact of the fuel on the transmission belt, extending its service life, and setting a material diverter unit to push and stir the fuel being transported, which can effectively avoid its blockage in the transportation unit and ensure the transmission effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0021] FIG1 is a schematic diagram of the overall structure of a fuel transmission device for a thermal power plant according to the present invention.

[0022] FIG2 is a schematic diagram of the overall internal structure of the transmission device for fuel use in thermal power plants according to the present invention.

[0023] FIG3 is a schematic diagram of the main internal structure of the transmission device for use in thermal power plant fuel according to the present invention.

[0024] FIG4 is a schematic diagram of the main structure of the carrying unit of the transmission device for use in thermal power plant fuel according to the present invention.

[0025] FIG5 is a schematic diagram of the internal structure of a delivery unit of a transmission device for use in a thermal power plant fuel according to the present invention.

[0026] FIG6 is a schematic structural diagram of a spiral guide vane of a transmission device for fuel used in thermal power plants according to the present invention.

[0027] FIG7 is a schematic structural diagram of a driving unit and a material shifting unit of a transmission device for use in a thermal power plant fuel according to the present invention.

[0028] FIG8 is a schematic structural diagram of a material transfer unit of a transmission device for use in thermal power plant fuel according to the present invention.

[0029] FIG9 is a cross-sectional view of the connection position between the material transfer assembly and the driving component of the transmission device for use in thermal power plant fuel according to the present invention.

[0030] FIG10 is an enlarged schematic diagram of the structure of point A in FIG2 of the transmission device for fuel used in thermal power plants according to the present invention. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0034] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing the embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included.

[0035] Example 1

[0036] 1 to 8 , a first embodiment of the present invention provides a fuel transmission device for use in a thermal power plant. The device includes a carrier unit 100, comprising a base member 101, a support bed 102 disposed on a side of the base member 101, multiple sets of supporting members 103 disposed on the support bed 102, drive wheels 104 symmetrically disposed at both ends of the support bed 102, and a transmission belt 105 sleeved on the two sets of drive wheels 104. The transmission belt 105 is a conveyor belt structure that can be driven by the drive wheels 104 to perform fuel transmission.

[0037] The conveying unit 200 includes a conveying member 201 positioned above the base member 101, four sets of spiral guide vanes 202 disposed within the conveying member 201, and four sets of spiral guide vanes 202 arranged in a staggered spiral pattern within the conveying member 201. Furthermore, a clearance groove 203 is defined between each set of spiral guide vanes 202. The conveying member 201 serves as a fuel feed channel, converting vertically falling fuel into a spirally moving transport method, thereby avoiding direct impact on the transmission belt 105.

[0038] The driving unit 300 includes a driving motor 301 located at the center of the bottom end of the conveying component 201, a driving component 302 arranged above the driving motor 301 and extending upward to the axis center of the conveying component 201, a connecting shaft 303 arranged at the top of the driving component 302, and multiple groups of limiting rings 304 evenly distributed on the driving component 302; the driving motor 301 can drive the driving component 302 to rotate, thereby driving the material digging unit 400 to stir and dredge; and,

[0039] The material-dipping unit 400 includes a material-dipping assembly 401 which is sleeved on the driving component 302 and located between the limiting rings 304, two groups of digging frames 402 symmetrically arranged on the material-digging assembly 401, a contact component 403 located between the two groups of digging frames 402, and a tightening component 404 arranged below the material-digging assembly 401. The position and number of the material-digging units 400 correspond to the give way grooves 203. This device has a total of three groups of material-digging units 400, which are evenly distributed in the conveying component 201. The driving component 302 can drive the material-digging units 400 to perform circumferential displacement, thereby achieving the purpose of promoting dredging in the conveying unit 200.

[0040] Among them, the base component 101 includes two groups of base plates 101a located on both sides below the conveying component 201, a transmission bin 101b opened inside the base plate 101a, an adapter plate 101c arranged on the side of the transmission bin 101b, and a protective frame 101d arranged above the other side of the transmission bin 101b. The adapter plate 101c is a wedge-shaped structure, and its hypotenuse edge extends to directly above the transmission belt 105.

[0041] During use, the transmission belt 105 divides the transmission bin 101b into two groups, the upper transmission bin 101b is used to accommodate the coal dropped from above, and a part of one side of the protective frame 101d is extended and fixedly connected to the side of the base component 101. The protective frame 101d has a conical structure, which can reduce the resistance to the solid fuel during transportation. The drive motor 301 is installed in the conical structure.

[0042] Among them, the supporting component 103 includes a bottom roller 103a located above the support bed 102, fixed blocks 103b arranged on both sides of the bottom roller 103a, and the fixed blocks 103b are fixedly connected to the support bed 102, and side rollers 103c are inserted into the outside of the fixed blocks 103b in an inclined state.

[0043] During use, the side rollers 103c are rotatably connected to the two sides of the bottom roller 103a, and the bottom roller 103a is rotatably connected between the two sets of fixed blocks 103b. The supporting component 103 as a whole can form a U-shaped structure when viewed from the side. When the transmission belt 105 runs onto the supporting component 103, the side rollers 103c on both sides can lift up the two sides of the transmission belt 105, so that the transmission belt 105 forms a side-lifting structure. The fuel accumulated on the transmission belt 105 for transportation will be lifted from both sides and gathered inward, thereby preventing the fuel from falling from the transmission belt 105 to both sides of the device during the transmission process.

[0044] Example 2

[0045] 5 and 6 , a second embodiment of the present invention is shown. This embodiment differs from the first embodiment in that a spiral guide vane 202 is used to guide the motion trajectory of the solid fuel during transmission, thereby reducing the impact force when the solid fuel falls, thereby reducing the burden on the conveyor belt and extending its service life.

[0046] Compared with Example 1, the conveying component 201 further includes a conveying barrel 201a located above the base component 101, a feed hopper 201b arranged at the top of the conveying barrel 201a, a feed channel 201c opened in the conveying barrel 201a, and a fixed rod 201d arranged on the inner side of the top of the feed channel 201c. The conveying barrel 201a is connected to the feed hopper 201b, the fixed rod 201d is fixedly connected to the conveying component 201, and the connecting shaft 303 extends into the fixed rod 201d, forming a rotational connection relationship.

[0047] Among them, the upper and lower surfaces of the spiral guide vane 202 are respectively the top surface 202a and the bottom surface 202b, and the two ends of the spiral guide vane 202 are respectively the high end 202c and the low end 202d. The horizontal height of the high end 202c is greater than the low end 202d. The overall direction of the spiral guide vane 202 is spirally twisted from the high end 202c to the low end 202d. The high end 202c and the low end 202d of each two groups of spiral guide vanes 202 are close to each other and the spiral direction is consistent.

[0048] Furthermore, due to the special structure of the spiral guide vane 202, when the spiral guide vane 202 is installed in the conveying component 201, the feed channel 201c will be divided into a spiral conveying channel inside the conveying pipe, and the feed end of the conveying pipe is located above the feed channel 201c, which is called the feed port 201e, and the position of the outlet below it is the discharge port 201f, and the opening of the discharge port 201f is facing the inclined surface facing the adapter plate 101c. Therefore, the fuel discharged through the spiral guide vane 202 will be guided through the discharge port 201f when discharged, and will fall onto the adapter plate 101c at the first time, instead of falling onto the transmission belt 105, thereby further absorbing the impact force.

[0049] During use, when the fuel enters the feed channel 201c through the feed port 201e, it will move and fall along the spiral guide vanes 202. The multiple sets of spiral guide vanes 202 extend the path length of the fuel's movement and descent in the delivery unit 200, thereby extending its descent time, causing the impact force of the fuel's descent to gradually decrease, reducing the peak value of the impact force. At the same time, with the cooperation of the multiple sets of spiral guide vanes 202, the fuel descent process is not a one-time impact, but is distributed at various points on the spiral path. Therefore, the impact force will be dispersed and slowed down. Similarly, due to the increase in the movement distance of the fuel in the delivery unit 200, the fuel will fall. In addition, the contact time and contact area between the object and the top surface 202a of the multiple sets of spiral guide vanes 202 will also increase, thereby increasing the friction between the object and the spiral guide vanes 202, hindering the falling speed of the object, and further slowing down the generation of impact force. Finally, the material is discharged through the discharge port 201f and impacted onto the discharge port 201f. The discharge port 201f can further absorb the fuel after the impact force is eliminated, and then guide the fuel to the transmission belt 105. At this time, the impact force of the fuel falling onto the transmission belt 105 has been greatly reduced, thereby effectively extending its service life.

[0050] The remaining structures are the same as those of Example 1.

[0051] Example 3

[0052] 7 to 10 , a third embodiment of the present invention is shown. This embodiment differs from the second embodiment in that the solid fuel running in the conveying unit 200 is pushed and stirred to clear the channel and prevent channel blockage.

[0053] Compared with Example 2, the driving component 302 further includes a rotating shaft 302a coaxial with the conveying component 201 in the vertical direction, a side receiving groove 302b opened on the outside of the rotating shaft 302a, an engaging block 302c arranged in the side receiving groove 302b, and a support spring 302d located between the side receiving groove 302b and the engaging block 302c, one end of the engaging block 302c is rotatably connected to the rotating shaft 302a, and the support spring 302d can be pushed outward by elastic support, and when squeezed, it shrinks inward and drives the engaging block 302c to retract into the side receiving groove 302b.

[0054] Among them, the material shifting assembly 401 includes a ring 401a that is sleeved on the driving component 302, teeth 401b arranged on the inner side of the ring 401a, a shift rod 401c arranged at the outer end of one side of the ring 401a, side sliding grooves 401d opened on the front and rear sides of the shift rod 401c, and a cross storage groove 401e opened in the vertical direction in the shift rod 401c. The width of the shift rod 401c matches the give way groove 203, so the shift rod 401c can pass through the give way groove 203. The size of the cross storage groove 401e matches the shifting frame 402 and the abutting component 403, and is used to provide space for accommodating the two. The teeth 401b are arranged obliquely, and its inner side edge abuts against the outer end of the engaging block 302c.

[0055] During use, the supporting spring 302d pushes out the engaging block 302c through elastic support, and the top end of the pushed out engaging block 302c will be engaged with the tooth 401b. At this time, the driving component 302 is engaged with the ring 401a through the engaging block 302c. Therefore, the rotation of the driving component 302 can drive the material shifting assembly 401 to rotate synchronously. The rotating material shifting assembly 401 can push the fuel sliding on the spiral guide vane 202 to prevent it from staying and clogging in the feed channel 201c, thereby achieving the effect of dredging and protection.

[0056] Among them, the toggle frame 402 includes a support rod 402a located in the cross storage groove 401e, and a limiting shaft 402b symmetrically arranged at both ends of the support rod 402a. The limiting shaft 402b located at the end of the support rod 402a extends into the side sliding groove 401d, and the top end of the support rod 402a is rotatably connected to the abutment component 403. The limiting shaft 402b extends into the side sliding groove 401d and can slide horizontally along the side sliding groove 401d.

[0057] The abutting component 403 includes a roller 403a located between the two groups of shifting frames 402, and connecting ears 403b symmetrically arranged on both sides of the roller 403a. The roller 403a is rotatably connected to the connecting ears 403b.

[0058] Among them, the tightening component 404 includes a sleeve 404a located below the shift rod 401c, an extension rod 404b arranged on one side of the sleeve 404a, a spring groove 404c opened inside the sleeve 404a, and one end of the extension rod 404b extends into the spring groove 404c, a contraction spring 404d arranged between the sleeve 404a and the extension rod 404b, and the contraction spring 404d is located in the spring groove 404c, and a rotating ear 404e is provided at the end of the sleeve 404a and the head end of the extension rod 404b. The two ends of the material shifting unit 400 are rotatably connected to the limit shaft 402b through the rotating ear 404e, and 403c always applies a contraction force inward, so the sleeve 404a and the extension rod 404b are always pulled by it to move relative to each other.

[0059] During use, when the driving component 302 drives the material-dipping unit 400 to rotate as a whole through the material-dipping assembly 401, the tightening component 404 will be pulled by the contraction of the spring slot 404c, and the digging frames 402 on both sides will be pulled inward through the sleeve 404a and the extension rod 404b. The two sets of digging frames 402 that move relatively will push the abutting component 403 upward, thereby forming a triangular support structure. The triangular structure can increase the contact area between the material-digging unit 400 and the fuel, thereby pushing more fuel and enhancing the pushing and dredging efficiency. As the material-digging unit 400 gradually moves, the fuel-digging unit 400 will move downward. As the material is gradually rotated, the abutment component 403 will gradually abut against the bottom surface 202b. Due to the extrusion guidance of the bottom surface 202b, the abutment component 403 will gradually squeeze the toggle frames 402 on both sides downward, and finally the toggle frames 402 and the abutment component 403 will shrink into the cross storage groove 401e. The shrinking material-dipping unit 400 is a long strip structure as a whole, which can perfectly pass through the give way groove 203. The give way groove 203 provides a way to avoid the circular rotation of the material-dipping unit 400, thereby enabling the material-dipping unit 400 to perform cyclic pushing and dredging work in the conveying unit 200.

[0060] The remaining structures are the same as those of Example 2.

[0061] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structures. Other replacements, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0062] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0063] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A fuel transmission device for a thermal power plant, characterized by: include, The carrying unit (100) comprises a base component (101), a support bed (102) arranged on a side of the base component (101), multiple groups of supporting components (103) arranged on the support bed (102), driving wheels (104) symmetrically arranged at both ends of the support bed (102), and a transmission belt (105) sleeved on the two groups of driving wheels (104); The conveying unit (200) comprises a conveying component (201) located above the base component (101), and four groups of spiral guide blades (202) arranged inside the conveying component (201), wherein the four groups of spiral guide blades (202) are staggered and distributed in the conveying component (201) in a spirally encircling manner, and a clearance groove (203) is provided between every two groups of the spiral guide blades (202); A driving unit (300) comprises a driving motor (301) located at the center of the bottom end of the conveying component (201), a driving component (302) arranged above the driving motor (301) and extending upward to the axis center of the conveying component (201), a connecting shaft (303) arranged at the top end of the driving component (302), and a plurality of limiting rings (304) evenly distributed on the driving component (302); and, The material shifting unit (400) comprises a material shifting assembly (401) sleeved on the driving component (302) and located between the limiting rings (304), two groups of shifting frames (402) symmetrically arranged on the material shifting assembly (401), an abutting component (403) located between the two groups of shifting frames (402), and a tightening component (404) arranged below the material shifting assembly (401). The position and number of the material shifting unit (400) correspond to and match the clearance groove (203).

2. The transmission device for use in thermal power plant fuel according to claim 1, characterized in that: The base component (101) includes two groups of base plates (101a) located on both sides below the conveying component (201), a transmission chamber (101b) opened inside the base plates (101a), an adapter plate (101c) arranged on the side of the transmission chamber (101b), and a protective frame (101d) arranged above the other side of the transmission chamber (101b).

3. The transmission device for use in thermal power plant fuel according to claim 2, characterized in that: The supporting component (103) comprises a bottom roller (103a) located above the support bed (102), fixed blocks (103b) arranged on both sides of the bottom roller (103a), and the fixed blocks (103b) are fixedly connected to the support bed (102), and side rollers (103c) are inserted into the outside of the fixed blocks (103b) in an inclined state.

4. The transmission device for fuel use in thermal power plants according to claim 3, characterized in that: The conveying component (201) comprises a conveying barrel (201a) located above the base component (101), a feeding hopper (201b) arranged at the top end of the conveying barrel (201a), a feeding channel (201c) opened in the conveying barrel (201a), and a fixing rod (201d) arranged on the inner side of the top end of the feeding channel (201c).

5. The transmission device for use in thermal power plant fuel according to claim 4, characterized in that: The upper and lower surfaces of the spiral guide vane (202) are respectively a top surface (202a) and a bottom surface (202b); the two ends of the spiral guide vane (202) are respectively a high end (202c) and a low end (202d); the horizontal height of the high end (202c) is greater than that of the low end (202d); the overall direction of the spiral guide vane (202) is spirally twisted from the high end (202c) to the low end (202d); the high end (202c) and the low end (202d) of each two groups of the spiral guide vanes (202) are close to each other and have the same spiral direction.

6. The transmission device for fuel use in thermal power plants according to claim 5, characterized in that: The driving component (302) includes a rotating shaft (302a) coaxial with the conveying component (201) in a vertical direction, a side receiving groove (302b) provided on the outside of the rotating shaft (302a), an engaging block (302c) arranged in the side receiving groove (302b), and a supporting spring (302d) located between the side receiving groove (302b) and the engaging block (302c).

7. The transmission device for use in thermal power plant fuel according to claim 6, characterized in that: The material shifting assembly (401) comprises a collar (401a) sleeved on the driving component (302), teeth (401b) arranged on the inner side of the collar (401a), a shifting rod (401c) arranged on the outer end of one side of the collar (401a), side sliding grooves (401d) provided on the front and rear sides of the shifting rod (401c), and a cross receiving groove (401e) provided in the vertical direction inside the shifting rod (401c).

8. The transmission device for use in thermal power plant fuel according to claim 7, characterized in that: The toggle frame (402) includes a support rod (402a) located in the cross receiving groove (401e), and a limiting shaft (402b) symmetrically arranged at both ends of the support rod (402a), and the limiting shaft (402b) located at the end of the support rod (402a) extends into the side sliding groove (401d).

9. The transmission device for use in thermal power plant fuel according to claim 8, characterized in that: The abutting component (403) comprises a roller (403a) located between the two groups of the shifting frames (402), and connecting ears (403b) symmetrically arranged on both sides of the roller (403a), and the roller (403a) is rotatably connected to the connecting ears (403b).

10. The transmission device for fuel use in thermal power plants according to claim 9, characterized in that: The tightening component (404) includes a sleeve (404a) located below the shift rod (401c), an extension rod (404b) arranged on one side of the sleeve (404a), a spring groove (404c) opened inside the sleeve (404a), and one end of the extension rod (404b) extends into the spring groove (404c), a contraction spring (404d) arranged between the sleeve (404a) and the extension rod (404b), and the contraction spring (404d is located in the spring groove (404c), and a rotating ear (404e) is arranged at the end of the sleeve (404a) and the beginning of the extension rod (404b).

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