Middle trough and scraper conveyer

Abstract

The utility model relates to the technical field of coal conveying equipment, and provides a middle trough which comprises a trough body used for bearing materials, the top of the trough body is provided with a protruding strip used for bearing a scraper blade and matched with the scraper blade in a sliding mode, and the protruding strip is arranged in the extending direction of the trough body. One end of the groove body is provided with two slots and a clamping groove located between the two slots, and the clamping groove penetrates through the top surface of the groove body upwards; two inserting blocks and a clamping table located between the two inserting blocks are arranged at the other end of each groove body, the inserting grooves in the groove bodies are used for being matched with the inserting blocks of the adjacent groove bodies in an inserted mode, and the inserting blocks on the groove bodies are used for being matched with the inserting grooves of the adjacent groove bodies in an inserted mode; the clamping grooves are used for bearing the clamping tables of the adjacent groove bodies, and the clamping tables are used for being in lap joint in the clamping grooves of the adjacent groove bodies. By means of the technical scheme, the problems that in the prior art, due to abrasion between the conveying chain and the material supporting groove plate, the service life of equipment is short, and the use and maintenance cost is high are solved. The equipment abrasion and the maintenance cost are reduced, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] The embodiments of this utility model relate to the technical field of coal conveying equipment, specifically to a central trough and scraper conveyor. Background Technology

[0002] Scraper conveyors are a type of conveying equipment commonly used in industrial fields such as coal mines and other mining industries. Scraper conveyors are suitable for conveying various materials such as powder, lumps, and granules. They are suitable for horizontal or inclined conveying and can effectively transport materials such as coal from one place to another.

[0003] In coal mining, scraper conveyors are located on the side of the coal seam to be mined. Each time a layer of coal is mined, the position of the scraper conveyor is adjusted synchronously to ensure its relative position to the coal seam. After the conveyor is started, the conveyor chain drives the corresponding scraper to move. The moving scraper then moves the mined coal on the trough, completing the coal transport. During operation, sliding friction exists between the scraper and the trough, causing severe wear on the bottom surface of the scraper and the upper surface of the trough, shortening the equipment's service life and requiring frequent maintenance. Simultaneously, the squeezing contact between the scraper and the trough means that each start-up of the conveyor chain consumes a significant amount of energy. Considering current industry trends, existing technologies need to be improved and optimized to achieve energy conservation and consumption reduction. Utility Model Content

[0004] To overcome the above-mentioned defects, the embodiments of this utility model provide a central trough, which solves the problem of wear between the scraper strip and the material support trough plate in the related technology, resulting in short equipment service life and high maintenance costs.

[0005] According to one aspect, at least one embodiment of the present invention provides a central groove, including a groove body for supporting materials. The top of the groove body has a protrusion for supporting a scraper and slidingly engaging with the scraper, the protrusion being arranged along the extending direction of the groove body. One end of the groove body is provided with two slots and a retaining groove located between the two slots, the retaining groove extending upward through the top surface of the groove body. The other end of the groove body is provided with two insert blocks and a retaining platform located between the two insert blocks. The slots on the groove body are used for insertion and engagement with the insert blocks of adjacent groove bodies, and the insert blocks on the groove body are used for insertion and engagement with the slots of adjacent groove bodies. The retaining groove is used to support the retaining platform of adjacent groove bodies, and the retaining platform is used to overlap within the retaining groove of adjacent groove bodies.

[0006] For example, in at least one embodiment of the present invention, a central groove is provided, wherein the top of the groove body is provided with a plurality of recessed grooves that are parallel to each other, and a convex strip is formed between two adjacent grooves.

[0007] For example, in at least one embodiment of the present invention, a central groove is provided, wherein a first guide surface is provided on the top surface of the groove body and is adjacent to the slot, and a second guide surface is provided on the slot platform. The first guide surface and the second guide surface extend outward and downward respectively. The first guide surface is used to connect with the second guide surface of the adjacent groove body, and the second guide surface is used to connect with the first guide surface of the adjacent groove body.

[0008] For example, in at least one embodiment of the present invention, a central trough is provided, wherein a shovel plate extending outward and used for scooping up materials is provided on one side of the trough body, and a material scooping part is provided at the bottom of the shovel plate along the extension direction of the trough body. The material scooping part is located near the outer wall of the shovel plate, and the thickness of the material scooping part gradually increases on the side away from the central axis of the trough body.

[0009] For example, in at least one embodiment of the present invention, a central trough is provided, wherein the bottom of the shovel plate is provided with a weight-reducing cavity, and the weight-reducing cavity extends toward the central axis side of the trough to the bottom of the trough.

[0010] For example, in at least one embodiment of the present invention, a central groove is provided, wherein a groove side is provided on one side of the groove body and a lower support plate is located below the groove side. The groove side is located near the upper part of the groove body, and the lower support plate is located near the bottom of the groove body. A sliding lug for connecting to an external device is provided between the groove side and the lower support plate. Two reinforcing ribs are connected between the sliding lug and the side wall of the groove body. Both reinforcing ribs are located above the lower support plate, and the two reinforcing ribs extend obliquely from the sliding lug to the groove body towards opposite sides.

[0011] For example, in at least one embodiment of the present invention, a central groove is provided, wherein the bottom of the groove is provided with a plurality of reinforcing strips, and the plurality of reinforcing strips intersect to form a grid.

[0012] For example, at least one embodiment of the present invention provides a central groove, the groove body including a middle plate and a bottom plate located below the middle plate, a skylight hole is provided through the middle plate, and a skylight is detachably installed in the skylight hole.

[0013] For example, in at least one embodiment of the present invention, a central groove is provided, wherein the skylight hole is provided through the side wall of the groove body, the side of the skylight is provided with an extension plate extending to the outside of the groove body, the side of the groove body is provided with a support platform for supporting the extension plate, and the extension plate is connected to the support platform by a connector.

[0014] According to one aspect, at least one embodiment of the present invention provides a scraper conveyor including the central trough described in any of the preceding claims.

[0015] The beneficial effects of the embodiments of this utility model are as follows:

[0016] In this invention, the raised strip on the top of the trough, through a structure arranged along the transport direction, transforms the contact area between the scraper and the trough from a complete contact on the top surface to a linear contact on the top surface of the raised strip. This reduces the actual contact area and lowers the frictional resistance during scraper sliding, thereby reducing wear on the top surface of the trough and the bottom surface of the scraper. The insertion and engagement of the slot and the plug, through the nesting of the boss and the slot, constrains the relative displacement of adjacent troughs in the width direction. The overlapping action of the locking platform and the locking slot makes the horizontal connection of adjacent troughs smoother. Both work together to enhance the stability of the trough connection and prevent trough misalignment caused by material impact or equipment vibration. The friction-reducing design of the raised strip and the stability design of the trough connection structure work synergistically to reduce the wear rate between the scraper and the trough, extending the service life of the equipment. Furthermore, the stable connection structure reduces abnormal friction caused by trough misalignment, further reducing maintenance frequency and costs. At the same time, the reduction in frictional resistance optimizes energy consumption during the start-up and operation of the conveyor chain. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention from a first angle in one embodiment;

[0019] Figure 2 for Figure 1 A magnified view of a portion of point A in the embodiment;

[0020] Figure 3 for Figure 1 A schematic diagram of the overall structure from the second angle in the embodiment;

[0021] Figure 4 for Figure 3 A partially enlarged schematic diagram of point B in the embodiment;

[0022] Figure 5 for Figure 1 A schematic diagram of the overall structure from the third angle in the embodiment;

[0023] Figure 6 for Figure 1 The bottom view in the embodiment;

[0024] In the diagram: 1. Trough, 2. Raised bar, 3. Slot, 4. Slot, 5. Insert block, 6. Slot platform, 7. Groove, 8. First guide surface, 9. Second guide surface, 10. Shovel plate, 11. Shovel section, 12. Weight reduction cavity, 13. Trough side, 14. Lower support plate, 15. Pushing ear, 16. Reinforcing rib, 17. Reinforcing strip, 18. Middle plate, 19. Bottom plate, 20. Skylight, 21. Extension plate, 22. Support platform. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0026] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0027] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] like Figures 1-5 As shown, this invention illustrates a central trough in one embodiment. The main body of the central trough is a trough body 1, which has a long, narrow structure. A protruding strip 2 is provided on the top of the trough body 1. The protruding strip 2 is continuously arranged along the extension direction of the trough body 1 (i.e., the material transport direction). The top surface of the protruding strip 2 forms a supporting surface that slides with the scraper. Two slots 3 and a groove 4 located between the two slots 3 are provided at one end (the first end). The slots 3 are grooves extending along the length direction of the trough body 1, and the two slots 3 are located on the left and right sides of the first end, respectively. The groove 4 is a recess extending along the width direction of the trough body 1, located between the two slots 3 and extending upward through the top surface of the trough body 1, forming a top opening structure. Two insert blocks 5 and a locking platform 6 located between the two insert blocks 5 are provided at the other end (second end) of the groove 1: the insert block 5 is a boss structure extending along the length direction of the groove 1, protruding from the end face of the second end of the groove 1, and its shape is adapted to the slot 3; the locking platform 6 is a boss extending along the width direction of the groove 1, located between the two insert blocks 5, and its shape is adapted to the slot 4, forming a structure that can be overlapped in the slot 4.

[0032] When multiple troughs 1 are connected sequentially along the transport direction, the second end insert 5 of the preceding trough 1 is inserted into the slot 3 of the first end of the following trough 1, forming a horizontal insertion fit; the locking platform 6 of the preceding trough 1 overlaps with the locking groove 4 of the following trough 1, and the bottom surface of the locking platform 6 contacts the bottom of the locking groove 4, forming a vertical support fit. The protrusions 2 are aligned at the connection points of adjacent troughs 1, forming a continuous scraper sliding surface. When the scraper moves with the transport chain, the bottom of the scraper slides along the top surface of the protrusions 2.

[0033] The protruding strip 2 at the top of the trough 1, through its structure set along the transport direction, transforms the contact area between the scraper and the trough 1 from a complete contact on the top surface to a linear contact on the top surface of the protruding strip 2. This reduces the actual contact area and the frictional resistance during scraper sliding, thereby reducing wear on the top surface of the trough 1 and the bottom surface of the scraper. The insertion and engagement of the slot 3 and the insert block 5 constrains the relative displacement of adjacent troughs 1 in the width direction through the nesting of the boss and the slot. The overlapping action of the locking platform 6 and the locking slot 4 makes the horizontal connection of adjacent troughs 1 smoother. Together, they enhance the stability of the connection of troughs 1 and prevent misalignment of troughs 1 caused by material impact or equipment vibration. The friction-reducing design of the protruding strip 2 and the stability design of the connection structure of troughs 1 work together to reduce the wear rate between the scraper and the trough 1, extend the service life of the equipment, and reduce abnormal friction caused by misalignment of troughs 1 through the stable connection structure, further reducing maintenance frequency and cost. At the same time, the reduction of frictional resistance optimizes energy consumption during the start-up and operation of the conveyor chain.

[0034] It should be noted that, in order to meet the requirement of moving the middle slot 1 one by one, when the slot 3 and the plug 5 of two adjacent slots 1 are inserted, there is a gap between the inner peripheral wall of the slot 3 and the outer peripheral wall of the plug 5. At the same time, there is also a gap between the two side walls of the card table 6 corresponding to the width direction of the slot 1 and the two inner side walls of the card slot 4 corresponding to the width direction of the slot 1, so as to meet the requirement of moving the slots 1 one by one to the working surface during the pushing process.

[0035] In some examples, the central slot is further optimized, for example, as... Figures 1-5 As shown, the top of the central trough 1 is provided with several grooves 7. Each groove 7 is a long, narrow structure formed by the downward indentation of the top of the trough 1, extending parallel to the direction of the trough 1 (i.e., the material transport direction). The grooves 7 are parallel to each other and spaced apart. The protruding portion between two adjacent grooves 7 forms a raised ridge 2, extending in the same direction as the groove 7. Its top surface is the highest area of ​​the top of the trough 1, forming a support surface for sliding cooperation with the scraper. The cross-section of the groove 7 has a regular geometric shape (such as a rectangle or trapezoid), and its bottom forms a height difference with other areas of the top of the trough 1. The vertical distance between the top surface of the raised ridge 2 and the bottom of the groove 7 is the depth of the groove 7. The central trough is made of a material with high wear resistance, high strength, and corrosion resistance. Utilizing the advantages of 3D sand molding integral casting, the trough 1, raised ridge 2, scraper 10, trough side 13, push lug 15, and anti-slip attachment lugs are integrally cast to obtain the central trough, effectively improving the overall performance of the central trough.

[0036] When the conveyor chain drives the scraper to move along the extension direction of the trough 1, the bottom surface of the scraper only contacts the top surface of the convex strip 2, and the bottom of the groove 7 does not contact the scraper; part of the material accumulates on the top surface of the convex strip 2 and part of it fills the groove 7, and is conveyed synchronously with the movement of the scraper.

[0037] The grooves 7 at the top of the trough 1 are recessed to form ridges 2 in the area between adjacent grooves 7, meaning the top surface of the ridges 2 is flush with the top surface of the trough 1. This avoids interference between the ridges 2 and the scraper caused by the ridges 2 protruding from the top surface of the trough 1. The contact area between the scraper and the trough 1 is changed from a single top contact to a dispersed contact of the top surfaces of multiple ridges 2, effectively reducing the actual contact area. The reduced contact area lowers the frictional resistance during scraper sliding, thereby reducing wear on the top surfaces of the ridges 2 and the bottom surface of the scraper, extending the service life of the trough 1 and the scraper. The grooves 7 provide localized space for material, reducing the degree of material compression on the top surfaces of the ridges 2, further reducing the wear rate of the ridges 2. The structural design of the grooves 7 and ridges 2, through optimized control of the contact area, achieves reduced frictional resistance and concentrated wear distribution, solving the problems of severe wear and high maintenance costs associated with scrapers and material support troughs in existing technologies.

[0038] In some examples, the central slot is further optimized, for example, as... Figures 1-5 As shown, a first guide surface 8 is provided on the top surface of the middle groove 1. The first guide surface 8 is adjacent to the slot 4 at the top of the groove 1 and is located on the side of the slot 4 away from the end face of the groove 1. Its surface extends outward and downward at an angle (i.e., the first guide surface 8 is inclined downward on the side away from the slot 6). The slot 6 is provided at the other end of the groove 1, and a second guide surface 9 is provided on its top surface. The inclination direction of the second guide surface 9 is opposite to that of the first guide surface 8 (i.e., the second guide surface 9 is inclined downward on the side away from the slot 4), and the inclination angle is the same as that of the first guide surface 8, ensuring effective connection between the first guide surface 8 and the second guide surface 9 of two adjacent grooves 1.

[0039] When adjacent troughs 1 are connected along the transport direction, the mounting plate 6 of the preceding trough 1 moves to the mounting slot 4 of the following trough 1, and the mounting plate 6 overlaps with the mounting slot 4. At the same time, the second guide surface 9 on the mounting plate 6 gradually approaches and contacts the first guide surface 8 located in the other trough 1. The second guide surface 9 of the preceding trough 1 and the first guide surface 8 of the following trough 1 form the first V-shaped transition area, which fully avoids the misalignment caused by the height difference between the two adjacent troughs 1, and prevents the scraper from sliding and getting stuck.

[0040] The V-shaped transition area formed between the two troughs 1 effectively prevents the scraper from getting stuck due to the height difference between the two troughs 1 during the movement of the scraper following the conveyor chain, and avoids localized hard collision wear between the bottom of the scraper and the front and rear ends of the troughs 1. The contact fit between the first guide surface 8 and the second guide surface 9 enhances the structural continuity of the connection between adjacent troughs 1, reduces stress concentration at the connection gap, and improves the stability of the connection between the troughs 1. The synergistic effect of these features, through the guiding function of the guide surfaces, reduces the operational difficulty of installing and maintaining the troughs 1, reduces wear at the connection points, extends the service life of the troughs 1, and further solves the problem of high equipment maintenance costs in the prior art.

[0041] In some examples, the central slot is further optimized, for example, as... Figures 1-5 As shown, a shovel plate 10 is provided on one side of the trough body 1 in the middle trough. The shovel plate 10 is a long strip-shaped component that extends along the side of the trough body 1 (the trough body 1 and the shovel plate 10 are integrally cast). The other end extends outward from the trough body 1 to form a cantilever structure. A shovel section 11 is provided at the bottom of the shovel plate 10. The shovel section 11 is a protruding structure that is continuously arranged along the extension direction of the trough body 1 (i.e., the material transport direction). It is arranged near the outer wall of the shovel plate 10 (the side away from the central axis of the trough body 1), and its thickness gradually increases from the side of the shovel section 11 near the central axis of the trough body 1 towards the outer wall (i.e., the cross-section is trapezoidal or wedge-shaped).

[0042] A weight-reducing cavity 12 is provided at the bottom of the shovel plate 10. The weight-reducing cavity 12 is a hollow structure on the bottom end face of the shovel plate 10. It is generally square in shape and extends towards the central axis of the trough 1 (i.e., the side closer to the center of the trough 1) to the bottom of the trough 1, forming an integral structure with the bottom end face of the trough 1. The cross-section of the weight-reducing cavity 12 is a regular geometric shape (such as a rectangle or ellipse). Its position avoids the area directly below the shovel section 11 (i.e., the main stress area of ​​the shovel section 11), forming a staggered layout between the cavity and the stress structure.

[0043] The shoveling section 11 at the bottom of the shovel plate 10 features a gradually increasing thickness, creating an inclined shoveling slope on its outer edge. This effectively shovels up materials (such as coal) accumulated on the side of the equipment as the trough 1 moves with the conveying equipment, reducing the need for manual feeding. The shovel section 11 extends along the trough 1 and is aligned with the material transport direction. When the trough 1 is subjected to a pushing force, it ensures that the shoveled material falls directly onto the trough 1 and is directly pushed and conveyed by the scraper, preventing material accumulation at the shovel plate 10. The weight-reducing cavity 12, by extending from the bottom of the shovel plate 10 to the bottom of the trough 1, reduces the overall material usage while maintaining the connection strength between the shovel plate 10 and the trough 1, lowering the inertial load during equipment operation and thus reducing energy consumption during conveyor chain startup and operation.

[0044] The wedge-shaped structure of the shovel section 11 and the staggered layout of the weight-reducing cavity 12 work together to ensure structural strength when shoveling materials through the rigid support of the shovel section 11, while reducing energy consumption through the lightweight design of the weight-reducing cavity 12. The shovel section 11 guides the material smoothly into the upper part of the trough 1. These features, through structural optimization, improve the smoothness of material conveying, reduce equipment energy consumption and wear, and lower operating and maintenance costs.

[0045] The main functions of the side shovels 10 of the scraper conveyor include, but are not limited to, collecting materials, loading materials, and providing support. During the operation of the scraper conveyor, the side shovels 10 can collect the coal crushed by the cutting section and transfer it to the central trough. Their large side inclination angle is beneficial for coal loading and bottom cleaning, while also providing reliable support under the coal mining machine and serving as the operating passage for the machine.

[0046] In some examples, the central slot is further optimized, for example, as... Figures 1-5 As shown, a sidewall 13 and a lower support plate 14 are provided on one side of the tank body 1: the sidewall 13 is a plate-like structure extending outward along the extension direction of the tank body 1, located in the upper region of the tank body 1; the lower support plate 14 is a plate-like structure extending outward along the extension direction of the tank body 1, located in the bottom region of the tank body 1, and its width direction is consistent with the width direction of the tank body 1. An installation space is formed between the sidewall 13 and the lower support plate 14, and a sliding lug 15 is set in this installation space. The sliding lug 15 is a columnar component, vertically set, with its upper and lower ends integrally cast with the sidewall 13 and the lower support plate 14, respectively. The sliding lug 15 has through holes for inserting connecting pins or bolts (the through holes are round holes or oblong holes, etc., which are commonly used design structures in the prior art), forming an interface for connecting with external pushing equipment (such as hydraulic supports).

[0047] Two reinforcing ribs 16 are connected between the sliding lug 15 and the side wall of the tank 1. The reinforcing ribs 16 are plate-shaped, rod-shaped, or strip-shaped components: one end is connected to the side wall of the tank 1, and the other end is connected to the sliding lug 15. From a top view, with the sliding lug 15 as the center, a V-shaped opening is formed facing the side wall of the tank 1, and both are located in the area above the lower support plate 14.

[0048] When an external device applies a pushing or pulling force through the push lug 15, the load is transmitted to the two reinforcing ribs 16 through the push lug 15. The first reinforcing rib 16 and the second reinforcing rib 16 bear the component force in different directions. The inclined extension layout causes the load to be distributed to different areas of the side wall of the tank body 1 along the axial direction of the reinforcing rib 16.

[0049] The channel side 13 and the lower support plate 14 provide a stable mounting base for the sliding ear 15 through their vertically distributed plate-like structure, ensuring the force balance of the sliding ear 15 when connecting to external equipment. Two reinforcing ribs 16 extend from the sliding ear 15 in a V-shape towards opposite sides. Through the mechanical principle of triangles, they decompose the external load borne by the sliding ear 15 into tensile and compressive forces along the axis of the reinforcing ribs 16, reducing stress concentration in one direction and improving the shear and bending resistance of the connection between the sliding ear 15 and the channel body 1. The placement of the reinforcing ribs 16 above the lower support plate 14 ensures that the load transmission path avoids the weak areas at the bottom of the channel body 1, enhancing the structural rigidity of the channel body 1 during the sliding process and preventing positional displacement of the channel body 1 due to deformation of the sliding ear 15. The aforementioned features work synergistically to optimize the support structure of the pusher ear 15, ensuring the reliability of the connection between the trough 1 and external equipment, reducing damage to connecting parts caused by frequent pushing operations, lowering maintenance frequency and replacement costs, and avoiding abnormal wear of the scraper and convex strip 2 caused by positional deviation of the trough 1, thereby improving the overall stability of the conveying system.

[0050] In some examples, the central slot is further optimized, for example, as... Figures 1-6 As shown, a reinforcing strip 17 is provided at the bottom of the central trough 1. The reinforcing strip 17 is a long strip-shaped protrusion extending along the length or width of the trough 1, and its cross-section is preferably rectangular or trapezoidal. It is integrally cast on the bottom surface of the trough 1. When there are several reinforcing strips 17, some of the reinforcing strips 17 extend along the length of the trough 1, and the other part extends along the width of the trough 1. The two parts of the reinforcing strips 17 intersect at the bottom of the trough 1 to form a grid structure. The reinforcing strips 17 at the intersection are integrally cast on the trough 1, and the spacing between adjacent reinforcing strips 17 is evenly distributed.

[0051] The reinforcing strips 17 at the bottom of the trough 1 increase the moment of inertia of the bottom section through their raised structure, enhancing the trough 1's resistance to bending deformation and preventing the bottom of the trough 1 from sinking or cracking due to material gravity or external loads. The grid-like reinforcing strips 17, through their cross-support in the length and width directions, form a bidirectional force transmission path, allowing stress to be evenly distributed along the grid when the bottom of the trough 1 is subjected to vertical loads, further enhancing the overall rigidity of the trough 1. The reinforcing strips 17 reduce abnormal wear caused by deformation of the trough 1, extending its service life. Compared to single-direction reinforcing strips 17, the grid structure provides higher structural strength with the same material usage, reducing maintenance frequency and replacement costs due to structural failure. The combined effect of these two elements, through mechanical structural optimization, improves the reliability of the trough 1, indirectly reducing abnormal contact wear between the conveyor chain and the trough 1, meeting the design goals of energy saving and consumption reduction.

[0052] In some examples, the central slot is further optimized, for example, as... Figures 1-6 As shown, the trough 1 of the central trough has a middle plate 18 and a bottom plate 19: the middle plate 18 is the top supporting component of the trough 1, and has a long strip-shaped plate structure with a protruding strip 2 on its top surface; the bottom plate 19 is the bottom supporting component of the trough 1, located below the middle plate 18. A skylight hole is provided through the middle plate 18. The skylight hole is a rectangular through hole, and its opening area simultaneously penetrates the top surface, bottom surface and side wall of the middle plate 18 and the trough 1 (that is, the skylight hole extends to the side of the trough 1, forming a side wall opening). The setting of the skylight hole will interrupt the continuity of part of the protruding strip 2, so that the long protruding strip 2 that continuously covers the entire length of the trough 1 becomes two short protruding strips 2.

[0053] The inner peripheral wall of the skylight opening is provided with a support strip for supporting the bottom edge of the skylight 20. The bottom surface of the support strip is flush with the bottom surface of the middle plate 18, and the top surface of the support strip is lower than the top surface of the groove 1. This can effectively support the edge of the skylight 20 and ensure the stability of the skylight 20 installation.

[0054] The skylight 20 is a plate-shaped component whose shape matches the skylight opening, covering the top opening of the skylight opening. The overlapping area between the skylight 20 and the skylight opening has mutually abutting and inclined third and fourth guide surfaces. These third and fourth guide surfaces eliminate the misalignment caused by the height difference between the skylight 20 and the top edge area of ​​the skylight opening (i.e., the top surface of the trough 1), ensuring that the scraper passes smoothly over the skylight opening and the area above the skylight 20, avoiding scraper jamming. An extension plate 21 is provided on the side of the skylight 20. The extension plate 21 is a plate-shaped structure that extends horizontally from the side edge of the skylight 20 to the outside of the trough 1. A support platform 22 is provided on the side of the trough 1 corresponding to the position of the extension plate 21. The support platform 22 is a plate-shaped structure that protrudes outward from the side wall of the trough 1, and its top surface contacts the bottom surface of the extension plate 21, forming support for the extension plate 21. The extension plate 21 and the support platform 22 are connected by a connector: the extension plate 21 is provided with a connecting hole, the support platform 22 is provided with a corresponding threaded hole, and the connector is a bolt. The bolt passes through the connecting hole and is screwed into the threaded hole to fix the extension plate 21 to the support platform 22, thereby fixing the skylight 20 in the skylight hole.

[0055] During normal transport, the skylight 20 is sealed by bolts connecting the extension plate 21 to the support platform 22 to prevent material leakage from the skylight. When it is necessary to inspect the inside of the tank 1 or clean the blocked material, unscrew the bolts, disconnect the extension plate 21 from the support platform 22, and lift the skylight 20 upward from the skylight to expose the internal space of the tank 1 below the middle plate 18 and the structure of the bottom plate 19.

[0056] The layered structure of the middle plate 18 and the bottom plate 19, through the stacked plate design, allows the middle plate 18 to serve as the main support surface to bear the load of materials and scrapers, while the bottom plate 19 acts as a supporting structure to distribute stress, preventing deformation of the trough 1 due to excessive local stress and improving the overall load-bearing capacity of the trough 1. The skylight hole penetrating the side wall of the trough 1 provides lateral extension space for the skylight 20. The cooperation between the extension plate 21 and the support platform 22 enhances the connection stability between the skylight 20 and the trough 1 through the horizontal support structure, preventing the skylight 20 from falling out of the skylight hole due to material impact or vibration. The detachable bolted connection makes the installation and removal of the skylight 20 convenient. During maintenance, it is not necessary to disassemble the entire trough 1 or the conveyor chain; the internal structure can be exposed directly by removing the skylight 20, reducing the time and labor costs of maintenance operations.

[0057] The load-bearing structural design of the middle plate 18 and the bottom plate 19, the sidewall penetration design of the skylight opening, and the synergistic effect of the connection structure between the extension plate 21 and the support platform 22 ensure the load-bearing reliability and sealing of the tank 1 during the conveying process. Furthermore, the detachable skylight 20 improves maintenance convenience, solving the problem of high equipment maintenance costs in existing technologies. The horizontal support of the extension plate 21 and the support platform 22 further distributes the material load borne by the skylight 20, reducing localized wear on the edges of the skylight 20 and the skylight opening, and extending the service life of the skylight 20.

[0058] like Figures 1-6 As shown, a scraper conveyor according to one embodiment of the present invention is illustrated. The main structure of the scraper conveyor includes several central troughs. Two adjacent central troughs are engaged by slots 3 and inserts 5 at the side wall attachments of the trough body 1. Several central troughs overlap sequentially along the conveying direction to form a continuous conveying path. The protrusions 2 on the top of the trough body 1 extend along the conveying direction, and each protrusion 2 is aligned at the overlap of adjacent trough bodies 1 to form a continuous supporting surface.

[0059] Several intermediate troughs are sequentially connected via slots 3 and inserts 5, forming a continuous and stable conveying path. This ensures seamless material transition during conveying and prevents material leakage or scraper jamming caused by misalignment of the trough 1. The aligned protrusions 2 of adjacent trough 1 maintain continuous contact between the scraper and the top surface of the protrusions 2 during movement, extending the friction-reducing effect of a single trough 1 and reducing the overall running resistance of the conveying chain. The snap-fit ​​structure of slots 3 and inserts 5 mechanically constrains the relative positions of adjacent trough 1, improving the structural stability of the conveying system and reducing trough 1 offset caused by vibration or material impact. The detachable connection of multiple intermediate troughs means that when a part of a trough 1 is worn or damaged, only that individual trough 1 needs to be replaced, without disassembling the entire conveying equipment, reducing the complexity and cost of maintenance. These features work synergistically to ensure the continuity and reliability of the conveying process and improve the maintainability of the equipment through modular design, effectively solving the problems of severe trough 1 wear and high maintenance costs in existing technologies.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A mid-slot, characterized by The system includes a trough for supporting materials. The top of the trough (1) has a protrusion (2) for supporting a scraper and slidingly engaging with the scraper. The protrusion (2) is arranged along the extension direction of the trough (1). One end of the trough (1) is provided with two slots (3) and a slot (4) located between the two slots (3). The slot (4) extends upward through the top surface of the trough (1). The other end of the trough (1) is provided with two inserts (5) and a platform (6) located between the two inserts (5). The slots (3) on the trough (1) are used to engage with the inserts (5) of the adjacent trough (1). The inserts (5) on the trough (1) are used to engage with the slots (3) of the adjacent trough (1). The slot (4) is used to support the platform (6) of the adjacent trough (1). The platform (6) is used to overlap the slot (4) of the adjacent trough (1).

2. The center slot of claim 1, wherein, The top of the groove (1) is provided with a plurality of recessed grooves (7) that are parallel to each other, and the protrusion (2) is formed between two adjacent grooves (7).

3. The center slot of claim 1, wherein, The top surface of the groove (1) is provided with a first guide surface (8) adjacent to the slot (4), and the card platform (6) is provided with a second guide surface (9). The first guide surface (8) and the second guide surface (9) extend outward and downward respectively. The first guide surface (8) is used to connect with the second guide surface (9) of the adjacent groove (1), and the second guide surface (9) is used to connect with the first guide surface (8) of the adjacent groove (1).

4. The center slot of claim 1, wherein, The trough (1) has an outwardly extending shovel plate (10) on one side for scooping up materials. The bottom of the shovel plate (10) has a scooping part (11) arranged along the extension direction of the trough (1). The scooping part (11) is arranged close to the outer wall of the shovel plate (10), and the thickness of the scooping part (11) gradually increases away from the central axis of the trough (1).

5. The center slot of claim 4, wherein, The bottom of the shovel plate (10) is provided with a weight reduction cavity (12), which extends to the bottom of the trough (1) along the central axis.

6. The center channel of claim 1 wherein, A sidewall (13) and a lower support plate (14) located below the sidewall (13) are provided on one side of the trough (1). The sidewall (13) is located near the upper part of the trough (1), and the lower support plate (14) is located near the bottom of the trough (1). A sliding lug (15) for connecting with external equipment is provided between the sidewall (13) and the lower support plate (14). Two reinforcing ribs (16) are connected between the sliding lug (15) and the side wall of the trough (1). Both reinforcing ribs (16) are located above the lower support plate (14), and the two reinforcing ribs (16) extend obliquely from the sliding lug (15) to the trough (1) towards opposite sides.

7. The center slot of claim 1 wherein, The bottom of the groove (1) is provided with a number of reinforcing strips (17), and the number of reinforcing strips (17) intersect to form a grid.

8. The mid-slot of any of claims 1-7, wherein, The trough (1) includes a middle plate (18) and a bottom plate (19) located below the middle plate (18). A skylight hole is provided through the middle plate (18), and a skylight (20) is detachably installed in the skylight hole.

9. The center channel of claim 8 wherein, The skylight hole is provided through the side wall of the groove (1). The side of the skylight (20) is provided with an extension plate (21) extending to the outside of the groove (1). The side of the groove (1) is provided with a support platform (22) for supporting the extension plate (21). The extension plate (21) is connected to the support platform (22) by a connector.

10. Scraper conveyor, characterized in that Includes the central groove as described in any one of claims 1 to 9.

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