Belt conveyor and crushing and screening plant

Abstract

The application discloses a belt conveyor, which comprises a conveying belt, a fixed section and a folding section used for forming a conveying surface, a telescopic assembly used for connecting the fixed section and the folding section, a carrier roller arranged at the bottom of the fixed section and the folding section and used for supporting the conveying belt, and a mud scraping plate arranged at the outer circumferential side of the carrier roller. The conveying belt is connected between the fixed section and the folding section. The fixed section and the folding section are hinged. The telescopic assembly is in transmission connection with the folding section and is used for driving the folding section to rotate relative to the fixed section, so that the belt conveyor is switched between a folding state and an unfolding state. The application further discloses a crushing and screening device comprising the belt conveyor.

Description

Technical Field

[0001] This utility model relates to the field of engineering crushing machinery, and in particular to a belt conveyor and crushing and screening equipment. Background Technology

[0002] Mobile crushing and screening plants are widely used in small and medium-sized mines due to their advantages such as high automation, compact structure, small footprint, and flexible relocation. In this type of equipment, belt conveyors are usually installed at the crusher discharge port to transfer and collect the crushed material. However, due to the strict limitations on the overall size of the machine for road transportation, the belt conveyor needs to be designed with a foldable structure to meet the size requirements during transportation.

[0003] Existing technologies mostly employ hydraulic cylinders in conjunction with crank or connecting rod mechanisms to achieve belt conveyor folding. While this achieves the folding action, the hydraulic cylinders must withstand the weight of the folded section and additional vibration loads for extended periods while the belt conveyor is in operation or transport mode. Even with the addition of hydraulic locks, long-term stability and reliability are difficult to guarantee. Furthermore, the idlers of folding belt conveyors are prone to accumulating dirt during material transport, and current technologies lack effective mud-proofing measures, leading to uneven idler operation and impacting conveying efficiency and equipment lifespan. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a belt conveyor that can effectively prevent soil from accumulating on the idler rollers.

[0005] This utility model provides a belt conveyor for a crushing and screening station, including a conveyor belt, a fixed section and a folded section for forming a conveying surface, a telescopic assembly for connecting the fixed section and the folded section, idlers disposed at the bottom of the fixed section and the folded section for supporting the conveyor belt, and scrapers disposed on the outer periphery of the idlers. The conveyor belt spans between the fixed section and the folded section, the fixed section and the folded section are hinged, and the telescopic assembly is drivenly connected to the folded section for driving the folded section to rotate relative to the fixed section.

[0006] In one embodiment, the surface of the idler roller is evenly distributed with a plurality of drive teeth, the drive teeth being connected to the conveyor belt, and the scraper blade having a plurality of clearance grooves corresponding to the drive teeth at one end near the idler roller.

[0007] In one embodiment, the folding section includes a first conveying section, a second conveying section, and a third conveying section arranged sequentially along the conveying direction of the belt conveyor. The first conveying section is hinged to the second conveying section, the second conveying section is hinged to the third conveying section, and the third conveying section is hinged to the fixed section. One end of the telescopic component is hinged to the second conveying section, and the other end is hinged to the fixed section.

[0008] In one embodiment, the first conveying section and the second conveying section are each provided with a first connecting plate at their opposite ends, and the second conveying section and the third conveying section are each provided with a second connecting plate at their opposite ends. The folding section also includes a plurality of fixing pins that are detachably inserted into the first connecting plate and the second connecting plate.

[0009] In one embodiment, the bottom of the first conveying section is provided with a mounting base for mounting idlers, and the scraper is detachably connected to the side of the mounting base.

[0010] In one embodiment, the telescopic assembly includes a telescopic part hinged to the first conveying section, a fixed part hinged to the fixed section, and a drive cylinder. The drive cylinder is throttle-connected to the telescopic part and is used to drive the telescopic part to telescopically move relative to the fixed part.

[0011] In one embodiment, the belt conveyor further includes bushings disposed on the first conveying section, the second conveying section, and the third conveying section, and pins sleeved within the bushings. Hinges are provided on both sides of the second conveying section, the third conveying section, and the fixed section, and the hinges are hinged to the pins.

[0012] In one embodiment, the belt conveyor further includes a drive assembly, which includes a drive roller disposed in the fixed section and a driven roller disposed in the first conveying section, wherein the conveyor belt is drively connected to the drive roller and the driven roller.

[0013] In one embodiment, the belt conveyor further includes a hopper and support portions connected to both sides of the hopper, the support portions being fixedly connected to the fixed section.

[0014] This utility model also provides a crushing and screening device, including a belt conveyor as described in the above embodiment.

[0015] This utility model provides a belt conveyor that can fold and retract when the crushing and screening station needs to be moved or folded for transport. The folding section is rotated via a telescopic component to achieve this, and the conveyor can be unfolded back into its conveying state when needed, significantly improving the flexibility and adaptability of the equipment. Simultaneously, the idler rollers support the conveyor belt, ensuring its smooth operation, and the scraper effectively prevents soil accumulation on the idler rollers. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a structural diagram of a belt conveyor provided as a preferred embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the unfolded state of a belt conveyor provided in a preferred embodiment of the present invention.

[0019] Figure 3 A schematic diagram of the structure of the scraper provided in a preferred embodiment of this utility model.

[0020] Figure 4 This is a schematic diagram of the structure of the idler roller provided in a preferred embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of a belt conveyor in a folded state, which is a preferred embodiment of the present invention.

[0022] Figure label: 1. First conveying section; 2. Second conveying section; 3. Third conveying section; 4. Hopper; 5. Fixed section; 6. Telescopic assembly; 7. Scraper; 8. Idler roller; 9. Conveyor belt; 10. First connecting plate; 11. Second connecting plate; 12. Hinge plate; 13. Mounting base; 61. Telescopic part; 62. Fixed part; 71. Clearance groove; 81. Transmission gear. Detailed Implementation

[0023] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0025] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, 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 utility model.

[0026] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.

[0027] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0028] Please refer to Figure 1-2 This utility model provides a belt conveyor for a mobile crushing and screening station, comprising a conveyor belt 9, a fixed section 5, and folding sections (1, 2, and 3 in the figure). The conveyor belt 9 spans between the fixed section 5 and the folding section and circulates under the drive of a drive assembly (not shown), thereby forming a transport surface for conveying materials. The fixed section 5 and the folding section are hinged together. One end of a telescopic assembly 6 is connected to the fixed section 5, and the other end is connected to the folding section. The telescopic assembly 6 is drively connected to the folding section. When the drive assembly drives the telescopic assembly 6 to extend or retract, the folding section can rotate relative to the fixed section 5, thereby switching the belt conveyor between folded and unfolded states.

[0029] Idler rollers 8 are installed at the bottom of both the fixed section 5 and the folding section. The idler rollers 8 support the conveyor belt 9, enabling the conveyor belt 9 to run smoothly and reducing frictional resistance during operation. A scraper 7 is installed near the outer periphery of the idler roller 8. The scraper 7 and the idler roller 8 are in a clearance fit. When the conveyor belt 9 is running, the scraper 7 can scrape off the mud or powder adhering to the surface of the idler roller 8. The clearance between the scraper 7 and the idler roller 8 prevents direct contact between the scraper 7 and the idler roller 8, thus avoiding wear.

[0030] like Figure 2 and Figure 5 Through the above structure, the belt conveyor can fold and retract when the crushing and screening station needs to be moved or folded for transport. The telescopic component 6 drives the folding section to rotate, and the belt can be unfolded back into the conveying state when needed, which significantly improves the flexibility and adaptability of the equipment. At the same time, the support of the idler roller 8 for the conveyor belt 9 ensures the smooth operation of the conveyor belt 9, and the scraper 7 can effectively prevent the accumulation of soil on the idler roller 8.

[0031] In this embodiment, as Figure 3-4As shown, multiple drive teeth 81 are evenly distributed on the surface of the idler roller 8. Meanwhile, to prevent interference between the scraper blade 7 and the drive teeth 81 on the idler roller 8 when cleaning the conveyor belt 9, multiple clearance grooves 71 are provided at the end of the scraper blade 7 near the idler roller 8. The positions of the clearance grooves 71 correspond one-to-one with the drive teeth 81 on the idler roller 8. When the conveyor belt 9 is running, the drive teeth 81 can smoothly enter the clearance grooves 71 after passing the scraper blade 7, without impacting or rubbing against the scraper blade 7, while the remaining part of the scraper blade 7 can still clean the idler roller 8.

[0032] like Figure 1 As shown, the folding section includes a first conveyor section 1, a second conveyor section 2, and a third conveyor section 3 arranged sequentially along the conveying direction. The first conveyor section 1 is hinged to the second conveyor section 2, the second conveyor section 2 is hinged to the third conveyor section 3, and the third conveyor section 3 is also hinged to the fixed section 5. Through this multi-stage hinged structure, the folding section can rotate at multiple joints, thus giving the belt conveyor greater flexibility during folding and unfolding. One end of the telescopic component 6 is hinged to the second conveyor section 2, and the other end is hinged to the fixed section 5. When the telescopic component 6 extends under the action of the drive cylinder, the second conveyor section 2 drives the first conveyor section 1 and the third conveyor section 3 to unfold outwards, thereby switching to the working state of the belt conveyor; when the telescopic component 6 retracts, the second conveyor section 2 drives the first conveyor section 1 and the third conveyor section 3 to fold sequentially towards the fixed section 5, thus causing the entire belt conveyor to retract, facilitating transportation and relocation, and solving the problems of traditional belt conveyors being structurally rigid and difficult to move.

[0033] Optionally, a first connecting plate 10 is provided at the opposite end of the first conveying section 1 and the second conveying section 2, and a second connecting plate 11 is provided at the opposite end of the second conveying section 2 and the third conveying section 3. Multiple fixing pins (not shown) are detachably inserted into the first connecting plate 10 and the second connecting plate 11 to achieve reliable fixing between adjacent sections.

[0034] When the conveyor belt is in operation, the operator can insert the fixing pins into the first connecting plate 10 and the second connecting plate 11, further limiting and fixing the adjacent sections on the basis of the hinged connection, thereby enhancing the overall stability of the folded section and preventing swaying or misalignment when conveying large materials or operating under high load. When it is necessary to fold or unfold the conveyor belt, the operator only needs to pull out the fixing pins, and the adjacent sections will return to the free hinged state, achieving smooth folding or unfolding under the drive of the telescopic component 6.

[0035] Optionally, the bottom of the first conveying section 1 is provided with a mounting base 13 for mounting the idler roller 8. The idler roller 8 is rotatably connected to the bottom of the first conveying section 1 via the mounting base 13 to provide support for the conveyor belt 9. The scraper 7 is detachably connected to the side of the mounting base 13, for example, by bolts, clips, or plug-in structures.

[0036] During the operation of the belt conveyor, the scraper 7 is in close contact with the outer surface of the idler roller 8 to clean the dirt, dust, or fine particles adhering to the idler roller 8, preventing material accumulation that could cause the conveyor belt 9 to deviate or become blocked. When the scraper 7 wears out after prolonged use, the operator can quickly replace it by removing the bolts or pulling out the clips, without having to disassemble the idler roller 8 or the mounting base 13, thus significantly reducing maintenance costs and time.

[0037] In this embodiment, the telescopic component 6 specifically includes a telescopic part 61 hinged to the second conveying section 2, a fixed part 62 hinged to the fixed section 5, and a drive cylinder (not shown) that is pulsatically connected to the telescopic part 61. In this embodiment, the drive cylinder is a hydraulic cylinder. The telescopic part 61 and the fixed part 62 are in a telescopic cooperation relationship. For example, a sleeve-type or slide rail-type structure can be adopted, so that the telescopic part 61 can move telescopically relative to the fixed part 62. When the drive cylinder works, its piston rod pushes the telescopic part 61 to extend along the axial direction of the fixed part 62, thereby driving the first conveying section 1 and the third conveying section 3 to gradually unfold, so that the folding section as a whole rotates to the working position; when the drive cylinder works in the opposite direction, the telescopic part 61 contracts relative to the fixed part 62, thereby driving the first conveying section 1 and the third conveying section 3 to gradually fold, so that the folding section as a whole closes close to the fixed section 5.

[0038] Through this structure, the drive cylinder primarily provides linear thrust, while the sleeve or sliding fit between the telescopic part 61 and the fixed part 62 bears part of the lateral and bending forces. This effectively disperses the additional load on the drive cylinder caused by the weight of the folding section and vibrations during operation, preventing damage or shortened lifespan due to excessive force. This not only ensures the smoothness and reliability of the folding / unfolding action of the folding section but also further reduces the load on the drive cylinder.

[0039] Optionally, bushings (not shown) are provided on the first conveying section 1, the second conveying section 2, and the third conveying section 3, with fixed pins installed inside the bushings as rotating connecting parts. Hinges 12 are provided on both sides of the second conveying section 2, the third conveying section 3, and the fixed section 5, respectively. The hinges 12 are rotatably connected to the bushings via pins, thereby achieving hinged connections between the sections.

[0040] During the folding or unfolding process of the belt conveyor, the pin rotates within the bushing, enabling the first conveyor section 1, the second conveyor section 2, and the third conveyor section 3 to fold and unfold smoothly around the rotation axis of the hinge plate 12. Furthermore, since the hinge plate 12 is hinged to the bushing via the pin, it rotates flexibly and is subjected to uniform force, avoiding the problems of localized wear or poor rotation caused by simple plate hinges.

[0041] In this embodiment, the belt conveyor also includes a drive roller (not shown) disposed in the fixed section 5 and a driven roller (not shown) disposed in the first conveying section 1. One end of the conveyor belt 9 is wound around the drive roller, and the other end is wound around the driven roller, forming a ring-shaped transmission connection with the drive roller and the driven roller. During the operation of the belt conveyor, the drive roller is driven to rotate by a power source (e.g., an electric motor), thereby driving the conveyor belt 9 to move continuously along the conveying surface, conveying the material from the hopper 4 to the discharge end. The driven roller plays a supporting and guiding role, enabling the conveyor belt 9 to maintain tension and run smoothly.

[0042] Optionally, the belt conveyor also includes a hopper 4 and support sections connected to both sides of the hopper 4. The support sections are fixedly connected to the fixed section 5, so that the hopper 4 is stably installed on the fixed section 5. The hopper 4 is located at the material drop position above the conveyor belt 9, forming a material inlet channel. When the material falls from a height into the conveyor belt 9, the hopper 4 can effectively suppress dust diffusion and prevent powder from flying in the air; at the same time, the side walls and bottom structure of the hopper 4 can effectively block the splashing generated by the material during the fall, reducing material loss. Since the hopper 4 guides the material from a height to the conveyor belt 9, its structural design reduces the falling speed of the material, making it closer to the running speed of the conveyor belt 9, thereby reducing the impact force between the material and the conveyor belt 9 and reducing the wear of the conveyor belt 9 and the idler rollers 8.

[0043] This utility model embodiment also provides a crushing and screening device, including the belt conveyor of the above embodiment.

[0044] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0045] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A belt conveyor for a crushing and screening station, characterized in that, The device includes a conveyor belt (9), a fixed section (5) and a folding section (1,2,3) for forming a transport surface, a telescopic assembly (6) for connecting the fixed section (5) and the folding section (1,2,3), an idler roller (8) disposed at the bottom of the fixed section (5) and the folding section (1,2,3) for supporting the conveyor belt (9), and a scraper (7) disposed on the outer periphery of the idler roller (8). The conveyor belt (9) spans between the fixed section (5) and the folding section (1,2,3). The fixed section (5) and the folding section (1,2,3) are hinged. The telescopic assembly (6) is drivenly connected to the folding section (1,2,3) for driving the folding section (1,2,3) to rotate relative to the fixed section (5).

2. The belt conveyor as described in claim 1, characterized in that, The surface of the idler roller (8) is evenly distributed with multiple transmission teeth (81), which are connected to the conveyor belt (9). The scraper (7) has multiple clearance grooves (71) corresponding to the transmission teeth (81) at one end near the idler roller (8).

3. The belt conveyor as described in claim 2, characterized in that, The folding section (1,2,3) includes a first conveying section (1), a second conveying section (2) and a third conveying section (3) arranged sequentially along the conveying direction of the belt conveyor. The first conveying section (1) is hinged to the second conveying section (2), the second conveying section (2) is hinged to the third conveying section (3), the third conveying section (3) is hinged to the fixed section (5), one end of the telescopic component (6) is hinged to the second conveying section (2), and the other end is hinged to the fixed section (5).

4. The belt conveyor as described in claim 3, characterized in that, The first conveying section (1) and the second conveying section (2) are each provided with a first connecting plate (10) at one end opposite to each other, and the second conveying section (2) and the third conveying section (3) are each provided with a second connecting plate (11) at one end opposite to each other. The folding sections (1,2,3) also include a plurality of fixing pins that are detachably inserted into the first connecting plate (10) and the second connecting plate (11).

5. The belt conveyor as described in claim 3, characterized in that, The bottom of the first conveying section (1) is provided with a mounting seat (13) for mounting the idler roller (8), and the scraper (7) is detachably connected to the side of the mounting seat (13).

6. The belt conveyor as described in claim 3, characterized in that, The telescopic assembly (6) includes a telescopic part (61) hinged to the first conveying section (1), a fixed part (62) hinged to the fixed section (5), and a driving cylinder. The driving cylinder is connected to the telescopic part (61) for driving the telescopic part (61) to telescopically move relative to the fixed part (62).

7. The belt conveyor as described in claim 3 or 4, characterized in that, The belt conveyor also includes bushings and pins fitted inside the first conveying section (1), the second conveying section (2) and the third conveying section (3). Hinges (12) are provided on both sides of the second conveying section (2), the third conveying section (3) and the fixed section (5). The hinges (12) are hinged to the pins.

8. The belt conveyor as described in claim 7, characterized in that, The belt conveyor also includes a drive assembly, which includes a drive roller disposed in the fixed section (5) and a driven roller disposed in the first conveying section (1). The conveyor belt (9) is connected to the drive roller and the driven roller in a driving connection.

9. The belt conveyor as described in claim 1, characterized in that, The belt conveyor also includes a hopper (4) and a support portion connected to both sides of the hopper (4), the support portion being fixedly connected to the fixed section (5).

10. A crushing and screening device, characterized in that, Includes a belt conveyor as described in any one of claims 1-9.

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