Multi-field wear-resistant scraper

Abstract

The utility model discloses a multi-field wear-resistant scraper conveyor which mainly solves the technical problem that transportation is affected due to the fact that the bottom of a groove body of an existing scraper conveyor is prone to being abraded in the transportation process. The middle part is provided with a middle groove, and the machine head and the machine tail are correspondingly connected to the two ends of the middle part. The middle groove comprises a groove body, limiting plates, a plurality of supporting rollers and chains, wherein the limiting plates are symmetrically and internally buckled on the tops of the two sides of the groove body and correspondingly form limiting cavities with the groove walls of the two sides of the groove body, the supporting rollers are perpendicular to the axial direction of the groove body and arrayed in the groove body at equal intervals, and the chains circularly run on the upper sides and the lower sides of the supporting rollers along the axis of the groove body. The chain plates are fixed to the chain at equal intervals and are perpendicular to the axis of the groove body, the belts are connected between the adjacent chain plates, and the bottom faces of the belts are in sliding contact with the supporting rollers when materials are conveyed. Limiting parts correspondingly extending into the limiting cavities are arranged on the two sides of the chain plate. The scraper conveyor can avoid direct contact with the bottom of the material tank body, so that the relative integrity of the tank body is ensured.

Description

Technical Field

[0001] This application relates to the field of scraper conveyor technology, specifically to a multi-field wear-resistant scraper conveyor. Background Technology

[0002] A scraper conveyor is a continuous transport device that uses a moving scraper chain to transport bulk materials. It is widely used in various industries such as coal, metallurgy, building materials, chemicals, and power, and is especially important in underground coal mining faces as one of the main coal transport equipment. A scraper conveyor mainly consists of three parts: the head section, the middle section, and the tail section. It also includes auxiliary components such as hydraulic jacks for moving the conveyor and chain tensioners for tightening the chain. The middle section, composed of a transition trough, a central trough, a chain, and scrapers, is the main channel for material transport. Driven by the sprockets at the head and tail, the scraper chain circulates along the conveyor trough, and the scrapers on the chain scrape the material from the inlet to the outlet, achieving continuous material transport.

[0003] During material transport in various applications, scraper conveyors inevitably experience wear and tear due to factors such as material characteristics and operating environment. This wear not only affects the lifespan and operating efficiency of the scraper conveyor but can also lead to equipment malfunctions and safety accidents. Specifically, since the trough is the main channel for material transport, the material moving within it generates friction and impact on the bottom and sidewalls. Wear is most pronounced at the bottom of the trough, especially under conditions of high material flow and high particle hardness, which can lead to material leakage, reduced conveying efficiency, and even trough rupture and other safety hazards.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the background technology of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0005] In view of at least one of the above technical problems, this disclosure provides a multi-field wear-resistant scraper conveyor, which mainly solves the technical problem that the bottom of the trough of the existing scraper conveyor is easily worn during transportation, thus affecting the transportation.

[0006] According to one aspect of this disclosure, a multi-field wear-resistant scraper conveyor is provided, comprising a central section with a central trough, a head and a tail connected to the two ends of the central section respectively. The central trough includes a trough body, limiting plates symmetrically inwardly fastened to the top of both sides of the trough body and forming limiting cavities corresponding to the trough walls on both sides of the trough body, a plurality of support rollers arranged at equal intervals between the trough bodies perpendicular to the axial direction of the trough body, a chain that circulates along the axis of the trough body on the upper and lower sides of the support rollers and is correspondingly driven by the head, chain plates fixed at equal intervals at the chain and perpendicular to the axis of the trough body, and belts connected between adjacent chain plates for sliding contact between the bottom surface and each support roller when transporting materials; limiting portions extending into the limiting cavities are provided on both sides of the chain plates.

[0007] In some embodiments of this disclosure, plugs and connectors for corresponding snap-fit ​​positioning of adjacent grooves are provided on both ends of the groove.

[0008] In some embodiments of this disclosure, the gap width between adjacent support rollers is 0.5 to 1 cm.

[0009] In some embodiments of this disclosure, the belt is fixed to the bottom position of the adjacent chain plate by a fixing plate that corresponds to and matches the outer edge contour of the chain plate.

[0010] In some embodiments of this disclosure, fixing holes are respectively provided at corresponding positions of the chain plate, belt and fixing plate, and the fixing holes at the fixing plate are countersunk holes.

[0011] In some embodiments of this disclosure, a plurality of brushes are arranged perpendicularly to the belt surface on both sides of the belt; the lower side of the limiting plate is a bent plate body for corresponding contact with the brushes.

[0012] One or more technical solutions provided in this application embodiment have at least the following technical effects or advantages: A belt of appropriate length is fixedly installed between adjacent chain plates, and support rollers are arrayed in a direction perpendicular to the axial direction of the trough. This solves the problem of trough bottom wear in existing scraper conveyors through the rolling friction between the belt and the support rollers. Furthermore, the belt is connected to the scraper via a fixing plate, facilitating maintenance and replacement. Simultaneously, hard brushes are fixedly arrayed on both sides of the belt. The brushes and the limiting plate relatively seal the space on both sides of the belt, reducing the possibility of material entering the trough from both sides and improving the reliability and maintenance frequency of the scraper conveyor. Attached Figure Description

[0013] Figure 1 This is a partial structural diagram of the central trough of a wear-resistant scraper conveyor in one embodiment of this application.

[0014] Figure 2 This is a schematic diagram of the structure of the central groove in one embodiment of this application.

[0015] Figure 3 This is an exploded view of a portion of the scraper structure in one embodiment of this application.

[0016] Figure 4 This is a schematic diagram of the belt structure in one embodiment of this application.

[0017] In the above figures, 1 is the trough, 11 is the limiting plate, 12 is the plug, 13 is the connector, 2 is the chain, 3 is the chain plate, 31 is the limiting part, 4 is the belt, 41 is the brush, and 5 is the support roller. Detailed Implementation

[0018] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and 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. Therefore, they should not be construed as limitations on this application.

[0019] To better understand the technical solution of this application, the above technical solution will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Existing scraper conveyors use a chain to drive scrapers, applying a pushing or pulling force to the material and moving it along the trough. However, in some specialized fields, the materials being transported are quite hard, causing direct friction between the material and the trough bottom plate, which easily leads to wear and affects the structural integrity of the trough. Therefore, this example discloses a multi-field wear-resistant scraper conveyor to solve the problem of severe wear caused by friction between the trough bottom and the material in existing scraper conveyors. Specifically, the wear-resistant scraper conveyor disclosed in this example has the same main structure as existing scraper conveyors, including a central section with a central trough, and a head and tail section connected to both ends of the central section. The scraper chain turns at the head and tail sections, rotating cyclically under the drive of the head sprocket to transport the material within the trough.

[0021] In this embodiment, see Figure 1The central trough of the middle section includes a trough body 1, within which materials are transported. Furthermore, in this example, limiting plates 11 are respectively fitted into the top of the trough walls on both sides of the trough body 1. The limiting plates 11 are symmetrically arranged about the central axis of the trough body, forming a limiting cavity between the limiting plates 11 and the trough walls of the trough body 1. Thus, through the cooperation of the limiting cavity and the chain plate, the movement trajectory of the chain plate is limited. Correspondingly, similar to existing scraper conveyors, this wear-resistant scraper conveyor also has a chain 2 connected to the head and tail sprockets. Several chain plates 3 are evenly spaced on the chain. The chain 2 is arranged along the axial direction of the central trough of the scraper conveyor, and each chain plate 3 is perpendicular to the axial direction of the central trough, fixing the chain plate 3 to the chain 2. Figure 3 The through hole in the middle of the chain plate for threading the chain is for illustrative purposes only. The specific connection method between the chain plate 3 and the chain 2 is existing technology and will not be described in detail in this example. Thus, the drive motor at the machine head drives the sprocket, which in turn drives the chain 2 meshing with the sprocket and the chain plates fixed on the chain 2 to move accordingly, thereby giving the material a certain pushing and pulling force to achieve the purpose of material conveying.

[0022] In addition, the middle section is provided with several central slots according to usage requirements, i.e., transportation length requirements. To ensure reliable connection of each central slot and to ensure that the axes of each central slot are collinear, in this embodiment, see... Figure 2 A plug 12 and a connector 13 are respectively provided on both ends of the groove 1 for corresponding plug-in connection. The outer contour of the plug 12 matches the inner contour of the connector 13. By plugging and aligning the two, the correct connection position of the adjacent middle grooves is ensured, and then the adjacent middle grooves are tightened accordingly.

[0023] To address the issue of wear caused by hard friction between the bottom of the central trough and the material, this embodiment includes a belt 4 positioned between adjacent chain plates 3. The length of the belt 4 matches the spacing between the adjacent chain plates, and its width is slightly smaller than the width of the central trough. This prevents frictional contact between the belt's sides and the side walls of the central trough, avoiding wear on the belt's sides and increased load on the scraper conveyor due to frictional resistance. In this example, the belt 4 is made of rubber with a certain thickness. However, if the belt 4 is placed directly on the bottom of the central trough, its bottom surface will inevitably rub against the trough bottom during long-term reciprocating transport, leading to wear, reduced belt 4 lifespan, and increased maintenance intensity. Therefore, in this embodiment, see [reference needed]. Figure 2A number of support rollers 5 are arranged at equal intervals between the two sides of the central trough wall. The support rollers 5 are closely spaced, and their axial direction is perpendicular to the central axis of the central trough. This provides a certain supporting force to the belt 4, preventing it from falling and breaking when materials are placed on it. Simultaneously, the rolling motion of the support rollers 5 ensures rolling contact with the belt 4, effectively reducing friction and extending the service life of the belt 4. To ensure reliable support for the belt 4, the gap between adjacent support rollers is set to 0.5–1 cm. This ensures a close arrangement of the support rollers and avoids direct contact between adjacent rollers, which could affect their movement. The chain 2 drives the chain plate and each section of the belt 4 to circulate along the trough axis between the upper and lower sides of the support rollers 5. Figure 1 Only the chain plate, chain and belt on the upper side of the support roller are shown. On the upper side of the support roller 5, the belt 4 slides in contact with each support roller 5 under the pressure of the material and its own weight, so as to achieve reliable material transportation with relatively small friction and wear.

[0024] See Figure 3 To achieve a reliable connection between the belt 4 and the adjacent chain plate 3, in this embodiment, see... Figure 3 A fixing plate 6 is provided to match the chain plate 3. The inner edge contour of the fixing plate 6 matches the outer edge contour of the chain plate 3, and fixing holes are respectively provided at corresponding positions on the chain plate 3, belt 4, and fixing plate 6. In this embodiment, the fixing holes at the chain plate 3 are bolt holes, the fixing holes at the belt 4 are through holes, and the fixing holes at the fixing plate 6 are countersunk holes. Thus, the belt 4 is fixed to the bottom of the chain plate 3 by fixing bolts that pass through the countersunk holes, through holes, and bolt holes in sequence. In this example, the depth of the countersunk hole is greater than the height of the bolt head of the fixing bolt, thereby avoiding the bolt head of the fixing bolt from protruding from the surface of the fixing plate 6, which would cause friction and wear between the bolt and the support roller, and thus affect the disassembly problem during belt maintenance and replacement.

[0025] Additionally, see Figure 3 In this example, the chain plate 3 is provided with limiting parts 31 on both sides. When the chain plate is running, the limiting parts 31 are located in the limiting cavity formed by the limiting plate 11 and the corresponding side wall of the groove. The limiting plate 11 limits the limiting parts 31 to increase the running stability of the chain and chain plate during the chain-driven chain plate operation.

[0026] To prevent material from falling into the trough from both sides of the belt during transport by the chain at point 4, in this embodiment, see... Figure 4 Several brushes 41 are fixedly arranged in an array perpendicular to the surface of the belt 4 on both sides. In this example, to ensure the protective effect of the brushes 41, the bristles of the brushes have a certain degree of hardness, and the brushes 41 on one side are arranged in a relatively dense array. See also... Figure 1 The lower side of the limiting plate 11 is a bent plate, which allows the brush 41 to contact the inclined plate surface of the bent part of the limiting plate, forming a relative seal on both sides of the belt and preventing loose debris from falling into the middle groove.

[0027] Although some preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0028] Obviously, those skilled in the art can make various modifications and variations to this disclosure without departing from the spirit and scope of its inventive concept. Therefore, if such modifications and variations to this disclosure fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A multi-field wear-resistant scraper conveyor, comprising a central section with a central groove, a head and a tail correspondingly connected to both ends of the central section, characterized in that, The central trough includes a trough body, limiting plates that are symmetrically inwardly fastened to the top of both sides of the trough body and form limiting cavities corresponding to the two side walls of the trough body, a plurality of support rollers arranged at equal intervals between the trough bodies perpendicular to the axial direction of the trough body, a chain that circulates along the axis of the trough body on the upper and lower sides of the support rollers and is driven by the machine head, chain plates that are fixed at equal intervals at the chain and perpendicular to the axis of the trough body, and belts that connect adjacent chain plates and are used for sliding contact between the bottom surface and each support roller when transporting materials; limiting portions that extend into the limiting cavities are provided on both sides of the chain plates.

2. The multi-field wear-resistant scraper conveyor according to claim 1, characterized in that, The two ends of the groove are respectively provided with plugs and connectors for corresponding snap-fit ​​positioning of adjacent grooves.

3. The multi-field wear-resistant scraper conveyor according to claim 1, characterized in that, The gap width between adjacent support rollers is 0.5 to 1 cm.

4. The multi-field wear-resistant scraper conveyor according to claim 1, characterized in that, The belt is fixed to the bottom position of the adjacent chain plate by a fixing plate that matches the outer contour of the chain plate.

5. The multi-field wear-resistant scraper conveyor according to claim 4, characterized in that, The chain plate, belt and fixing plate are respectively provided with fixing holes at corresponding positions, and the fixing holes at the fixing plate are countersunk holes.

6. The multi-field wear-resistant scraper conveyor according to claim 1, characterized in that, The belt has several brushes arranged in an array perpendicular to the belt surface on both sides; the lower side of the limiting plate is a bent plate body for corresponding contact with the brushes.

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