Middle groove structure

Abstract

This invention provides a central trough structure and a replacement method for replacing the central plate components within the central trough structure. The structure includes two trough side bodies arranged parallel to each other; and multiple central plate components distributed at intervals along the extension direction of the trough side bodies, each serving to carry material. The length of each central plate component along the extension direction of the trough side body is less than or equal to two-thirds of the length of the trough side body along its extension direction. This invention addresses the problem of overly complex replacement processes for central plates in existing central troughs.

Description

Technical Field

[0001] This invention relates to the field of coal mining machinery, and more specifically, to a central trough structure. Background Technology

[0002] Scraper conveyors are the main transport equipment in integrated coal mining systems. They consist of a scraper chain, a central trough, a head section, and a tail section. During coal transport, the scrapers and scraper chain slide on the central trough, which is the most numerous structural component and also the main energy-consuming and wear-prone part. When unloaded, the majority of the scraper conveyor's power is consumed in friction. The main failure mode of the central trough is wear at the contact point between the central plate and the scraper chain; that is, the most significant wear area is at the chain track of the central plate. Welding the chain track is also the most labor-intensive part of central trough maintenance.

[0003] Currently, the replacement of the existing middle plate in the central channel is done using a complete segmentation method. First, channel steel is welded to the left and right sides of the central channel as tie rods, serving a positioning and deformation-preventing rigid fixation function. Then, carbon arc gouging is used to remove the entire middle plate, replacing it with a wear-resistant steel plate of the same strength. Due to the small distance between the middle plate and the bottom plate, the welding torch cannot fully extend into the weld seam for welding; therefore, the entire bottom plate must be gouged away to expose all weld seams of the middle plate. Then, the middle plate is welded to the channel sides according to the specified welding sequence, followed by welding the bottom plate. After completion, heat insulation treatment is applied. However, the entire replacement and repair process is quite cumbersome, and after the middle plate is welded, the bottom plate needs to be repaired by welding, which is prone to cracking and increases the risk of further breakage. Summary of the Invention

[0004] The main objective of this invention is to provide a central groove structure to solve the problem that the replacement process of the central plate in the central groove is too complicated in the prior art.

[0005] To achieve the above objectives, the present invention provides a central trough structure, including two trough side bodies arranged parallel to each other; and multiple central plate components distributed at intervals along the extension direction of the trough side bodies, each central plate component being used to carry materials; wherein the length of each central plate component along the extension direction of the trough side body is less than or equal to two-thirds of the length of the trough side body along its extension direction.

[0006] Furthermore, each middle plate component is provided with a second bevel facing another middle plate component, and the second bevel is an inclined surface inclined to the horizontal plane.

[0007] Furthermore, in two adjacent middle plate components, a third weld is formed between the second bevel of one middle plate component and the second bevel of the other middle plate component, so as to achieve the connection between the two adjacent middle plate components by welding the third weld.

[0008] Furthermore, each main body of the channel includes a channel, which consists of an upper channel and a lower channel arranged sequentially in the vertical direction. The upper channel is located above the lower channel, and the opposite sides of each middle plate component are connected to the corresponding main body of the channel through the corresponding upper channel.

[0009] Furthermore, each middle plate component is provided with a first bevel facing the upper groove side. The first bevel includes an upper opening and a lower opening, so as to connect with the side wall of the corresponding upper groove side through the upper bevel and the lower bevel respectively.

[0010] Furthermore, the gaps formed between the upper and lower bevels and the upper channel side are respectively the first weld and the second weld, so that the connection between multiple middle plate components and the two channel side bodies can be completed by welding the first weld and the second weld in sequence.

[0011] Furthermore, each main body of the channel is provided with a first receiving cavity, which is located above the upper channel body, so as to form a first receiving space between the first receiving cavities on the two main bodies of the channel and the upper surfaces of multiple middle plate components, so as to receive materials through the first receiving space.

[0012] Furthermore, the central trough structure also includes a bottom plate component, with the opposite sides of the bottom plate component connected one-to-one with the lower trough sides of the two trough body bodies. The bottom plate component is used to support the scraper chain after unloading materials.

[0013] Furthermore, the main body of the trough is also provided with a second receiving cavity, which is located between the lower trough and the upper trough, so as to form a second receiving space between the second receiving cavities of the two main trough bodies, the upper surface of the bottom plate component and the lower surface of the multiple middle plate components, so as to receive the scraper chain after unloading through the second receiving space.

[0014] Furthermore, there are two middle plate components; or the number of middle plate components is greater than two, and the lengths of the multiple middle plate components decrease sequentially along the extension direction of the main body of the channel.

[0015] In this invention, two parallel trough bodies are connected to each other via a central plate component, which supports the central plate component to carry the material. During material transport, the scraper chain drives the material across the central plate component, resulting in prolonged friction between the scraper chain and the material on the upper surface of the central plate component, leading to wear and damage and necessitating replacement. Therefore, multiple central plate components are provided, spaced apart along the extension direction of the trough body. The length of each central plate component along the extension direction of the trough body is less than or equal to two-thirds of the length of the trough body along its extension direction. This arrangement eliminates the need to disassemble the bottom plate component to sequentially weld adjacent central plate components for replacement of the central trough structure, thus solving the problem of overly complex replacement processes in existing central trough systems. Furthermore, the central trough structure of this invention is simple overall, easy to manufacture, and exhibits excellent performance. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0017] Figure 1 A perspective view of the central groove structure provided according to an embodiment of the present invention is shown;

[0018] Figure 2 A top view schematic diagram of the central groove structure provided according to an embodiment of the present invention is shown;

[0019] Figure 3 A schematic diagram showing the connection between the first groove side and the middle plate component of the central groove structure provided according to an embodiment of the present invention is shown;

[0020] Figure 4 A schematic diagram showing the connection between two adjacent middle plate components of the middle groove structure provided according to an embodiment of the present invention is shown.

[0021] The above figures include the following reference numerals:

[0022] 1. Main body of the channel; 2. Channel; 3. First channel; 4. Second channel; 5. First receiving cavity; 6. Second receiving cavity;

[0023] 10. Middle plate component; 11. First bevel; 110. Upper bevel; 111. Lower bevel; 12. Second bevel;

[0024] 13. First weld; 14. Second weld; 15. Third weld; 16. Second accommodating space; 20. Base plate component. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] like Figures 1 to 4 As shown, the present invention provides a central trough structure, including a trough body 1 and a central plate component 10. There are two trough bodies 1, arranged parallel to each other, connected to each other by the central plate component 10, so that the central plate component 10 supports the material carried by the trough body 1. There are multiple central plate components 10, arranged sequentially and spaced apart along the extension direction of the trough body 1, each central plate component 10 being used to carry material; wherein the length of each central plate component 10 along the extension direction of the trough body 1 is less than or equal to two-thirds of the length of the trough body 1 along its extension direction. This arrangement facilitates disassembly and replacement of one central plate component 10 when it is damaged, without disassembling all central plate components 10; or, when replacing all central plate components 10, it is not necessary to disassemble the bottom plate component 20, but rather to sequentially disassemble and weld two adjacent central plate components 10 to complete the replacement of the central trough structure.

[0027] In order to obtain higher welding quality and improve welding efficiency, each middle plate component 10 is provided with a second bevel 12 facing another middle plate component 10. The second bevel 12 is an inclined surface inclined to the horizontal plane, so as to achieve the connection between the two adjacent middle plate components 10 by welding the second bevel 12 of the two adjacent middle plate components 10.

[0028] Specifically, the second bevel 12 is a V-shaped bevel, that is, each of the two adjacent middle plate components 10 has a chamfer at the end on the same side, so that the connection between the two adjacent middle plate components 10 can be achieved by welding the two chamfers together.

[0029] like Figure 1 and Figure 4 As shown, in order to connect two adjacent middle plate components 10 by welding the second bevel 12, a third weld 15 is formed between the second bevel 12 of one middle plate component 10 and the second bevel 12 of the other middle plate component 10. This arrangement is such that the connection between the two adjacent middle plate components 10 is achieved by welding the third weld 15, and by welding the third weld 15, the second bevel 12 of the two adjacent middle plate components 10 melts and fuses together, thereby achieving the connection between the two adjacent middle plate components 10.

[0030] like Figure 1As shown, each groove body 1 includes a groove 2, which are respectively a first groove 3 and a second groove 4 arranged in a vertical direction. The first groove 3 is located above the second groove 4. The opposite sides of each middle plate component 10 are connected to the corresponding groove body 1 through the corresponding first groove 3, so that the connection between the middle plate component 10 and the groove body 1 can be realized by disassembling and welding multiple middle plate components 10 and the first groove 3.

[0031] Furthermore, in order to facilitate the connection between each middle plate component 10 and the channel body 1 and to improve the welding quality between the middle plate component 10 and the first channel body 3, such as Figure 3 As shown, each middle plate component 10 is provided with a first bevel 11 facing the first groove side 3. The first bevel 11 includes an upper bevel and a lower bevel, so as to connect with the side wall of the corresponding first groove side 3 through the upper bevel 110 and the lower bevel 111 respectively, so as to realize the connection between each middle plate component 10 and the first groove side 3 by welding the upper bevel 110 and the lower bevel 111 respectively.

[0032] Specifically, the first bevel 11 is a K-type bevel, that is, each middle plate component 10 has two chamfers at the end facing the first groove side 3. The two chamfers are the upper bevel 110 and the lower bevel 111, so that they can be welded to the side wall of the corresponding first groove side 3 through the upper bevel 110 and the lower bevel 111, so as to realize the connection between each middle plate component 10 and the first groove side 3.

[0033] To facilitate the connection between each middle plate component 10 and the first channel side 3 by welding the upper bevel 110 and the lower bevel 111 respectively, the gaps formed between the upper bevel 110 and the lower bevel 111 and the first channel side 3 are respectively the first weld 13 and the second weld 14, so that the connection between multiple middle plate components 10 and two channel side bodies 1 can be completed by welding the first weld 13 and the second weld 14 in sequence.

[0034] like Figure 1 As shown, in order to facilitate the carrying and accommodating of the scraper chain and materials, and to realize the scraper chain transport of materials, each of the main body 1 of the trough is provided with a first accommodating cavity 5. The first accommodating cavity 5 is located above the first trough body 3, so that the first accommodating cavity 5 on the two main body 1 of the trough body and the upper surface of the multiple middle plate components 10 form a first accommodating space, so as to accommodate materials through the first accommodating space; wherein, the scraper chain is composed of scraper and chain, and the chain drives the scraper to transport materials along the extension direction of the main body 1 of the trough body within the first accommodating space.

[0035] Furthermore, the central trough structure also includes a bottom plate component 20, with the opposite sides of the bottom plate component 20 connected one-to-one with the second trough side 4 of the two trough side bodies 1. The bottom plate component 20 is used to support the scraper chain after unloading materials.

[0036] To facilitate the loading and accommodating of the scraper chain after unloading materials, a second accommodating cavity 6 is provided on the trough body 1. The second accommodating cavity 6 is located between the second trough body 4 and the first trough body 3, so that a second accommodating space 16 is formed between the second accommodating cavities 6 of the two trough body 1s, the upper surface of the bottom plate component 20, and the lower surface of the multiple middle plate components 10, so that the scraper chain after unloading can be accommodated through the second accommodating space 16. The scraper chain transports materials through the first accommodating space in sequence and then enters the second accommodating space 16, and then enters the first accommodating space in sequence, so as to continuously unload materials in this cycle.

[0037] One embodiment of the present invention is as follows: there are two middle plate components 10, one middle plate component 10 has a length of two-thirds and the other middle plate component 10 has a length of one-third, so that the connection between the two middle plate components 10 and the two channel body 1 is completed by sequentially welding the first weld 13 and the second weld 14 between the two middle plate components 10 and the first channel body 3, and then welding the third weld 15 between the two middle plate components 10.

[0038] Another embodiment of the present invention is as follows: the number of middle plate components 10 is greater than two, and the length of the multiple middle plate components 10 decreases sequentially along the extension direction of the channel body 1, so as to complete the connection between the two adjacent middle plate components 10 and the two channel bodies 1 by sequentially welding the first weld 13 and the second weld 14 between the two adjacent middle plate components 10 and the first channel body 3, and then welding the third weld 15 between the two adjacent middle plate components 10.

[0039] The method for replacing the central groove structure in this invention involves welding multiple central plate components 10 within the central groove structure to complete the replacement process of the central groove structure.

[0040] When there are two middle plate components 10, the replacement method is as follows: First, use air gouging to disassemble two-thirds of the damaged middle plate component 10, and then replace it with the aforementioned middle plate component 10. Weld the first weld 13 between its opposite sides and the first groove side 3. The first weld 13 is welded using MAG welding, followed by filler welding. A multi-layer, multi-pass welding method is used to ensure that the first bevel 11 on both sides has a certain penetration depth and the weld bead is smooth. At this time, disassemble the remaining one-third of the damaged middle plate component 10. At the same time, use the space left after disassembling the one-third damaged middle plate component 10 to allow the welding torch to reach into the second weld 14 between the two-thirds of the middle plate component 10 and the first groove side 3 to complete the welding of the second weld 14. After that, complete the butt weld of the one-third of the middle plate component 10, the second weld 14, and the third weld 15 between the two middle plate components 10 to complete the replacement process of the middle groove structure. It is evident that the base plate component 20 does not need to be disassembled during the entire replacement process, thus solving the problem of overly complex replacement processes in the prior art.

[0041] When the number of middle plate components 10 is greater than two, the replacement method is as follows: the length of the middle plate components 10 decreases sequentially along the extension direction of the main body 1 of the channel side. The above replacement method is used to replace and weld two adjacent middle plate components 10 in sequence to complete the replacement of multiple middle plate components 10.

[0042] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0043] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0044] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0045] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0046] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A central trough structure for accommodating materials, characterized in that, The central groove structure includes: The channel body (1) has two parts, and the two channels body (1) are arranged parallel to each other; The middle plate component (10) is a plurality of the middle plate components (10), and the plurality of the middle plate components (10) are distributed sequentially at intervals along the extension direction of the channel body (1), and each of the middle plate components (10) is used to carry materials; Among them, the length of each of the middle plate components (10) along the extension direction of the groove body (1) is less than or equal to two-thirds of the length of the groove body (1) along its extension direction. The adjacent middle plate components (10) are connected by welding, as are each middle plate component (10) and the two channel body bodies (1). When replacing the middle plate component (10), the space left by the removed middle plate component (10) is used to weld the weld between the middle plate component adjacent to the removed middle plate component (10) and the channel body body (1).

2. The central groove structure according to claim 1, characterized in that, Each of the middle plate components (10) is provided with a second bevel (12) facing the other middle plate component (10), and the second bevel (12) is an inclined surface inclined to the horizontal plane.

3. The central groove structure according to claim 2, characterized in that, In two adjacent middle plate components (10), a third weld (15) is formed between the second bevel (12) of one middle plate component (10) and the second bevel (12) of the other middle plate component (10) to achieve the connection between the two adjacent middle plate components (10) by welding the third weld (15).

4. The central groove structure according to claim 1, characterized in that, Each of the aforementioned groove body (1) includes a groove (2), the groove (2) being a first groove (3) and a second groove (4) arranged sequentially in the vertical direction, the first groove (3) being located above the second groove (4), and the opposite sides of each of the aforementioned middle plate components (10) being connected to the corresponding groove body (1) through the corresponding first groove (3).

5. The central groove structure according to claim 4, characterized in that, Each of the middle plate components (10) is provided with a first bevel (11) facing the first groove (3). The first bevel (11) includes an upper bevel (110) and a lower bevel (111) to be connected to the side wall of the corresponding first groove (3) through the upper bevel (110) and the lower bevel (111) respectively.

6. The central groove structure according to claim 5, characterized in that, The gaps formed between the upper bevel (110) and the lower bevel (111) and the first channel side (3) are respectively the first weld (13) and the second weld (14), so that the connection between the multiple middle plate components (10) and the two channel side bodies (1) can be completed by welding the first weld (13) and the second weld (14) in sequence.

7. The central groove structure according to claim 4, characterized in that, Each of the aforementioned trough body (1) is provided with a first receiving cavity (5), which is located above the first trough body (3) to form a first receiving space between the first receiving cavity (5) on the two trough body (1) and the upper surface of the multiple middle plate components (10) to receive materials.

8. The central groove structure according to claim 4, characterized in that, The central trough structure also includes a bottom plate component (20), the opposite sides of which are connected one-to-one with the second trough side (4) of the two trough side bodies (1), and the bottom plate component (20) is used to support the scraper chain after unloading materials.

9. The central groove structure according to claim 8, characterized in that, The main body (1) of the trough is also provided with a second receiving cavity (6), which is located between the second trough (4) and the first trough (3) to form a second receiving space (16) between the second receiving cavities (6) of the two main bodies (1), the upper surface of the bottom plate component (20) and the lower surface of the multiple middle plate components (10) to accommodate the scraper chain after unloading.

10. The central groove structure according to any one of claims 1 to 9, characterized in that, The middle plate component (10) consists of two parts; or The number of the middle plate components (10) is greater than two, and the length of the multiple middle plate components (10) decreases sequentially along the extension direction of the groove body (1).

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