Ground bulk material belt conveyor for multiple fields

Abstract

The utility model discloses a ground bulk material belt conveyor for multiple fields. The problem that bulk materials carried at the position of an inclined-section bulk material belt conveyor are prone to sliding off under the action of the gravity of the bulk materials, and therefore the transportation efficiency and personal and equipment safety are affected is mainly solved. The device comprises a rack arranged on the ground, a conveying belt obliquely arranged relative to the rack, and a material pressing mechanism fixed relative to the rack and arranged above the conveying belt. The material pressing mechanism comprises stand columns which are arranged on the two sides of the rack and fixedly connected with the rack, guide grooves which are parallel to the conveying belt and are symmetrically fixed to the stand columns on the two sides, and fulcrum shaft chain belts which are arranged at the tops of the stand columns and used for synchronously rotating along with the conveying belt. The pressing plate assemblies are fixed to the surface of the fulcrum shaft chain belt at equal intervals, used for extruding the bulk materials on the conveying belt and correspondingly move along the guide grooves. Therefore, reliable transportation of various bulk material inclined sections can be achieved, and production efficiency reduction caused by material sliding and safety risks caused by material sliding are avoided.

Description

Technical Field

[0001] This application relates to the field of belt conveyor technology, specifically to a bulk material belt conveyor for multiple applications on the ground. Background Technology

[0002] Bulk material conveyor belts are mechanical devices used for the continuous transport of bulk materials. They are widely used in industries such as mining, ports, power, building materials, and chemicals. Their core function is to efficiently and stably transport bulk materials such as coal, ore, sand, and grain from a starting point to a destination via the cyclical movement of a circular conveyor belt. Specifically, the bulk material is evenly distributed on the conveyor belt through the feed inlet. The drive unit drives the conveyor belt to roll along idlers, transporting the material to the unloading point. By adjusting the conveyor belt speed, inclination angle, and idler layout, different material characteristics and conveying distances can be accommodated.

[0003] However, due to different application fields and scenarios, such as bulk material transportation in complex tunnel ground scenarios such as coal mine roadways with varying transport slopes, mountains, and underground tunnels, the need for lifting transport results in inclined sections of the belt conveyor. Consequently, relatively loose materials are very likely to slide down under their own gravity, leading to local overload of the conveyor belt or material accumulation, which affects the transport efficiency of the bulk material belt conveyor. Furthermore, if materials roll down steep slopes due to inertia, it will threaten the safety of the equipment and personnel.

[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 bulk material conveyor for multiple applications on the ground, which mainly solves the problem that bulk materials transported on inclined sections of bulk material conveyors are prone to slipping under their own gravity, thus affecting transportation efficiency and the safety of personnel and equipment.

[0006] According to one aspect of this disclosure, a bulk material conveyor for multiple applications on the ground is provided, comprising a frame disposed on the ground, a conveyor belt disposed at an incline relative to the frame, and a pressing mechanism fixed relative to the frame and disposed above the conveyor belt; the pressing mechanism includes columns fixedly connected to the frame on both sides, guide grooves symmetrically fixed to the columns on both sides parallel to the conveyor belt, a support shaft chain disposed at the top of the columns and used to rotate synchronously with the conveyor belt, and pressure plate assemblies fixed at equal intervals to the surface of the support shaft chain for pressing the bulk material on the conveyor belt and moving accordingly along the guide grooves.

[0007] In some embodiments of this disclosure, the frame includes several height-adjustable vertical frames, and the belt conveyor frames between adjacent vertical frames are hinged to each other.

[0008] In some embodiments of this disclosure, the bottom of the frame is provided with a plurality of retractable support feet relative to the bottom crossbeam of the frame.

[0009] In some embodiments of this disclosure, the support shaft chain includes a plurality of power shafts arranged in parallel between the two columns via bearings, gears respectively fixed to both sides of each power shaft, a support shaft chain corresponding to and meshing with the gears, and a drive motor for driving the power shafts to rotate; the pressure plate assembly is fixedly connected to the support shaft of the support shaft chain.

[0010] In some embodiments of this disclosure, the pressure plate assembly includes a connecting seat for fixed connection with the support shaft chain, a limiting rod for fixed connection with the connecting seat, a limiting wheel rotatably disposed at both ends of the limiting rod and for correspondingly engaging and rolling in the guide groove, a spring column perpendicularly disposed on both sides of the limiting rod, and a pressure plate correspondingly telescopically disposed through the spring column; the surface of the pressure plate for contacting the bulk material is an arc-shaped surface.

[0011] In some embodiments of this disclosure, the spring post includes an outer cylinder fixedly connected to the limiting rod and having a port diameter smaller than its inner edge diameter; a spring disposed inside the outer cylinder and coaxial with the outer cylinder; and an inner cylinder having an outer edge diameter matching the port diameter of the outer cylinder and having a limiting plate at its end located inside the outer cylinder; the other end of the inner cylinder is fixedly connected to the pressure plate; and the limiting plate abuts against the spring.

[0012] In some embodiments of this disclosure, the two ends of the guide groove are respectively flared in a trumpet shape.

[0013] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0014] 1. By using a pressing mechanism that is parallel to the conveyor belt and moves at the same speed as the conveyor belt, the bulk material at the conveyor belt is pressed in sections, thereby reducing or even avoiding the slippage of the bulk material under its own gravity and the resulting safety risks.

[0015] 2. The cooperation between the guide groove and the limiting wheel can ensure that the pressure plate can reliably hold the bulk material, and prevent the pressure plate from being subjected to reaction force and transmitting the reaction force to the support shaft chain, which would affect the normal operation of the support shaft chain.

[0016] 3. The spring column can avoid hard contact between the pressure plate and the bulk material, so that the pressure plate can adapt to the non-uniform bulk material at different heights on the conveyor belt, achieving the best pressing and anti-slip effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a bulk material conveyor belt in one embodiment of this application.

[0018] Figure 2 This is an exploded view of the pressure plate assembly in one embodiment of this application.

[0019] In the above figures, 1 is the frame, 2 is the conveyor belt, 3 is the pressing mechanism, 31 is the column, 32 is the support shaft chain, 321 is the gear, 322 is the support shaft chain, 323 is the support shaft, 33 is the pressure plate assembly, 331 is the connecting seat, 332 is the limit rod, 333 is the limit wheel, 334 is the pressure plate, 335 is the outer cylinder, 336 is the inner cylinder, 337 is the spring, and 34 is the guide groove. Detailed Implementation

[0020] 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.

[0021] Unless otherwise specified, all devices and other components involved in the following embodiments are commercially available products.

[0022] 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.

[0023] In complex ground environments such as coal mine roadways with varying slopes, the use of belt conveyors for bulk material transport presents challenges. The presence of inclined lifting sections makes it easy for relatively loose materials to slide down under their own weight, leading to localized overload or material accumulation on the conveyor belt. This negatively impacts the transport efficiency of the bulk material conveyor. Furthermore, if materials roll down steep slopes due to inertia, it can threaten equipment and personnel safety. To address these issues, this paper discloses a multi-domain bulk material conveyor, focusing on the inclined section of the conveyor structure as an example. (See attached image). Figure 1 It includes a frame 1 set on the ground, a conveyor belt 2 set at an inclination relative to the frame, and a pressing mechanism 3 fixed relative to the frame 1 and set above the conveyor belt 2; thereby, the pressing mechanism 3 presses the bulk material at equal intervals during the bulk material conveying process of the conveyor belt, thereby providing a certain support to the bulk material, reducing or even eliminating the risk of the bulk material slipping, thus ensuring the safety and reliability of bulk material transportation in the inclined section.

[0024] For details, see Figure 1 The frame, as the main support structure of the belt conveyor, is used to erect the conveyor belt at a certain height above the ground. To achieve reliable support, the frame 1 includes several parallel vertical frames, with crossbeams between the vertical frames for reinforcement. In other embodiments, to facilitate rapid adaptive adjustment of the conveyor slope in certain usage scenarios and to achieve the lifting and transportation of bulk materials, each vertical frame in this example is an axially adjustable telescopic frame. The adjustment method can be achieved by setting two coaxial telescopic rods, with positioning holes evenly distributed along their axial direction. By aligning the corresponding positioning holes of the two telescopic rods and fixing them with bolts, the corresponding height can be adjusted. Alternatively, a hydraulic lifting structure can be used to adjust the height of the vertical frame. This adjustment method is existing technology and will not be described further here. In this example, the belt conveyor frame between adjacent vertical frames is hinged, so that after the vertical frame is adjusted in height as needed, the belt conveyor frame can be adjusted accordingly. In this example, Figure 1 Only the conveyor belt and the drive roller for driving the conveyor belt are shown. In some other embodiments, in order to accommodate the fit between the conveyor belt and the drive roller after the vertical frame height is adjusted, pressure rollers are provided on both sides of the conveyor belt corresponding to the bending part of the conveyor belt.

[0025] In addition, in some other embodiments, considering that the ground is uneven in some scenarios, in order to ensure the stability of the bulk material conveyor installation, several retractable support feet are provided at the bottom crossbeam of the frame. Each support foot includes an internally threaded tube fixedly connected to the bottom crossbeam of the frame, and an externally threaded rod threadedly connected to the internally threaded tube. The end of the rod is provided with a foot plate for contacting the ground. Thus, through the threaded engagement of the internally threaded tube and the externally threaded rod, the extension length of each support foot can be adjusted independently, thereby adapting to harsh ground flat environments and improving the adaptability of the bulk material conveyor in various ground scenarios.

[0026] Because inclined conveyor transport can cause bulk materials on the conveyor belt to slip off due to their own gravity, this embodiment includes a pressing mechanism that moves parallel to and synchronously with the conveyor belt. This pressing mechanism compresses the bulk materials, thus solving the problem of material slippage. See details in this embodiment. Figure 1 The pressing mechanism includes symmetrically arranged columns on both sides, which fix the pressing mechanism 3 to the frame 1. A rotating and cyclically running support chain 32 is provided between the symmetrical columns, and pressure plate assemblies 33 are fixed at equal intervals on the surface of the support chain 32. Driven by the support chain 32, each pressure plate assembly 33 moves at the same speed as the conveyor belt, thus pressing the loose material on the surface of the conveyor belt and preventing it from slipping.

[0027] Specifically, in this embodiment, the support shaft chain includes a power shaft disposed between two symmetrical columns 31, with each power shaft arranged in parallel. In this example, both ends of the power shaft are connected to the columns 31 via bearings, thereby enabling the drive shaft to rotate relative to the columns 31. Two gears 321 are symmetrically arranged on the shaft body of the power shaft, and these gears are fixedly connected to the power shaft, allowing it to rotate with the rotation of the power shaft. See also... Figure 1 Each power shaft has a support chain 322 for meshing transmission between gears 321. Specifically, the support chain 322 includes two annular chains of equal length, with several support shafts 323 spaced equally and parallel between the two annular chains. The two ends of each support shaft 323 pass through and are fixedly connected to the corresponding annular support chain 322. In this example, the power shaft is also connected to a drive motor (not shown in the figure). Thus, after the two annular support chains 322 are meshed with the gears 321 on both sides of the power shaft, the gears 321 rotate with the power shaft under the drive of the drive motor, thereby driving the two meshing annular support chains 322 to rotate the support shafts 323 cyclically. See also... Figure 1 The surface of the support shaft chain belt 32 is also fixedly provided with a number of pressure plate assemblies 33. Specifically, the pressure plate assemblies 33 are fixedly connected to the support shaft 323 at the corresponding installation position. Thus, under the rotation drive of the support shaft chain belt 32, each pressure plate assembly 33 rotates in a cycle.

[0028] See Figure 2 In this embodiment, the pressure plate assembly 33 specifically includes a connecting seat 331 for correspondingly connecting and fixing it to the support shaft. In this example, to ensure the stability and reliability of the connection between the pressure plate assembly 33 and the support shaft 323, and to prevent the connecting seat 331 from rotating around the support shaft, the connecting seat 331 is correspondingly inserted and fixed between two adjacent support shafts. That is, the pressure plate assembly 33 is reliably installed by the two support shafts inserted at the connecting seat 331. Furthermore, to prevent the connecting seat 331 from sliding along the support shaft, in some other embodiments, an external thread is opened on the outer edge surface of the support shaft, and the position of the connecting seat 331 is limited by a limiting nut threaded to the support shaft. In addition, considering that the pressure plate assembly 33 will be subjected to a reaction force when pressing the bulk material, and the support shaft chain cannot effectively consume and resist this reaction force, thus seriously affecting the pressing effect of the pressure plate assembly 33, therefore, in this embodiment, see Figure 1 Two guide grooves 34 are symmetrically arranged at the two side columns 31. The guide grooves 34 are fixed relative to the columns 31 and are parallel to the conveyor belt; see corresponding... Figure 2The bottom of the connecting seat 331 is fixedly connected to a limiting rod 332, and the connecting seat 331 is positioned at the middle of the limiting rod 332. Both ends of the limiting rod 332 are connected to limiting wheels 333 via bearings. The diameter of the limiting wheels 333 matches the groove of the guide groove 34. Thus, driven by the support shaft chain 32, the limiting wheels 333 of the pressure plate assembly 33 engage with the guide groove 34 and move along the guide groove 34. This causes the reaction force on the pressure plate assembly 33 to be applied to the guide groove 34, where the guide groove 34 resists the reaction force, ensuring the pressure plate assembly holds the loose material conveyed by the conveyor belt. Furthermore, to facilitate reliable engagement of the limiting wheels 333 into the guide groove, see [reference needed]. Figure 1 In this example, the two ends of the guide groove are flared in a trumpet shape, thereby guiding the limiting wheel 333 so that it can reliably enter the guide groove and move along the groove.

[0029] Additionally, the pressure plate 334 is fixedly connected to the limiting rod 332 for contacting the bulk material and achieving a pressing effect. In this embodiment, when the pressure plate assembly circulates with the support shaft chain 32, to ensure reliable pressing of the bulk material when the corresponding pressure plate runs above the conveyor belt, the surface of the pressure plate 334 that contacts the bulk material is set to be an arc-shaped surface, see [reference]. Figure 1 When the pressure plate moves with the support shaft chain to the point where it just comes into contact with the loose material on the conveyor belt, the edge of the curved surface of the pressure plate just contacts the loose material. As the support shaft chain rotates further, the pressure plate gradually increases its depth of pressing into the loose material through the curved surface, thereby ensuring its pressing effect on the loose material.

[0030] However, in this embodiment, considering that some bulk materials have high hardness, when the height of the bulk material below the pressure plate is indeed greater than the distance between the pressure plate and the conveyor belt, the hard contact and direct force between the conveyor belt, the bulk material, and the pressure plate will cause damage to the components. Therefore, in this embodiment, see... Figure 2 The pressure plate 334 is connected to the limiting rod 332 via a spring post. Specifically, the spring post includes an outer cylinder 335 fixedly connected to the limiting rod 332. An inner cylinder 336, with one end of the pressure plate 334 fixed, is slidably embedded in the outer cylinder 335 along its axial direction. A spring is also provided in the outer cylinder 335 along its axial direction, with one end of the spring contacting the top of the inner cylinder 336. Thus, when the pressure plate 334 is in contact with the bulk material and subjected to force, the inner cylinder 336 can extend and retract along the outer cylinder 335 within a certain length range. This allows the pressure plate to adaptively adjust the degree of clamping as needed, avoiding the risk of component damage caused by hard contact. In order to prevent the inner cylinder 336 from detaching from the outer cylinder, a limiting plate is provided at the end of the inner cylinder 336 and a port hole is provided at the end of the outer cylinder 335. The diameter of the port hole matches the outer edge diameter of the inner cylinder 336, and the diameter of the limiting plate matches the inner edge diameter of the outer cylinder 335 and is larger than the diameter of the port hole of the outer cylinder 335.

[0031] Therefore, the support shaft chain of the pressing mechanism drives the pressing plate components to circulate under the drive of the power shaft and gears, and keeps the movement speed of the support shaft chain consistent with the conveyor belt speed. As a result, each pressing plate component that runs above the conveyor belt and comes into contact with the bulk material performs a segmented pressing effect on the bulk material, thereby reducing the risk of the bulk material slipping. At the same time, if the bulk material is large and loose, and some of the bulk material falls into the top plate of the pressing plate after the pressing plate presses into the bulk material to a certain depth, the pressing plate rotates when it circulates to the end. As a result, the material on the top of the pressing plate can be poured onto the conveyor belt, which can avoid material loss.

[0032] 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.

[0033] 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 bulk material conveyor belt for multiple applications on the ground, characterized in that, The device includes a frame installed on the ground, a conveyor belt inclined relative to the frame, and a pressing mechanism fixed relative to the frame and located above the conveyor belt. The pressing mechanism includes columns fixedly connected to the frame on both sides, guide grooves symmetrically fixed to the columns on both sides parallel to the conveyor belt, a support shaft chain located at the top of the columns and used to rotate synchronously with the conveyor belt, and pressure plate assemblies fixed at equal intervals to the surface of the support shaft chain for pressing the loose material on the conveyor belt and moving accordingly along the guide grooves.

2. The ground-based multi-field bulk material conveyor according to claim 1, characterized in that, The frame includes several height-adjustable vertical frames, and the belt conveyor frames between adjacent vertical frames are hinged.

3. The ground-based multi-field bulk material conveyor according to claim 1 or 2, characterized in that, The bottom of the frame is provided with several retractable support feet relative to the bottom crossbeam of the frame.

4. The ground-based multi-field bulk material conveyor according to claim 1, characterized in that, The support shaft chain includes several power shafts arranged in parallel between the two columns via bearings, gears fixed to both sides of each power shaft, a support shaft chain that meshes with the gears, and a drive motor for driving the power shafts to rotate; the pressure plate assembly is fixedly connected to the support shaft of the support shaft chain.

5. The ground-based multi-field bulk material conveyor according to claim 1, characterized in that, The pressure plate assembly includes a connecting seat for fixed connection with the support shaft chain, a limiting rod for fixed connection with the connecting seat, a limiting wheel rotatably disposed at both ends of the limiting rod and for correspondingly engaging and rolling in the guide groove, a spring column perpendicularly disposed on both sides of the limiting rod, and a pressure plate correspondingly telescopically disposed through the spring column; the surface of the pressure plate for contacting the bulk material is an arc-shaped surface.

6. The ground-based multi-field bulk material conveyor according to claim 5, characterized in that, The spring column includes an outer cylinder fixedly connected to the limiting rod and having a port diameter smaller than the inner edge diameter; a spring disposed inside the outer cylinder and coaxial with the outer cylinder; and an inner cylinder having an outer edge diameter matching the port diameter of the outer cylinder and having a limiting plate at its end located inside the outer cylinder; the other end of the inner cylinder is fixedly connected to the pressure plate; and the limiting plate abuts against the spring.

7. The ground-based multi-field bulk material conveyor according to claim 5, characterized in that, The two ends of the guide groove are flared in a trumpet shape.

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