A continuous feed surface feeder

Abstract

This utility model discloses a continuous surface feeder, including a chain plate, frame, baffle, drive unit, machine support frame, chute, head wheel assembly, and tail wheel assembly. The frame is arranged with horizontal and inclined sections along the conveying direction, forming a turning point between them. The chain plate is composed of multiple hinged chain plate sections, which circulate along the horizontal and inclined sections under the drive unit. The horizontal section serves as the feed end, used to receive bulk materials unloaded by dump trucks or loaders; the inclined section is used to lift materials and complete unloading at the end. An arc transition roller is installed at the turning point. A baffle and adjusting limit plate are installed above the chain plate to limit material spillage at the turning point and promote the natural shedding of adhering materials during bending, creating a self-cleaning effect. This feeder has advantages such as stable structure, adaptability to surface layout, high load-bearing capacity, and reliable operation, and is suitable for bulk material handling scenarios such as open-pit mines, construction yards, and solid waste treatment.

Description

Technical Field

[0001] This utility model relates to the field of material conveying technology, specifically a continuous surface feeder. Background Technology

[0002] Surface bulk material conveying equipment is widely used in open-pit mines, construction material yards, solid waste treatment plants, port storage yards, and other applications. It is mainly used for the continuous conveying and stacking of bulk materials unloaded from dump trucks, loaders, or excavators. Commonly used conveying equipment in the current technology includes belt conveyors, ordinary plate feeders, and chain conveyors.

[0003] Belt conveyors offer advantages such as large conveying capacity and stable operation. However, their load-bearing structure, typically composed of rubber conveyor belts, cannot withstand the concentrated impact loads generated by direct unloading from dump trucks or loaders. Therefore, they cannot be directly installed on the ground as receiving equipment for coarse materials. Furthermore, belt conveyors require a relatively stable foundation, have poor adaptability to terrain, and struggle to operate stably in open-air areas or uneven ground. They are also prone to adhesion and deviation under conditions involving wet or sticky materials.

[0004] While existing plate feeders possess a certain degree of impact resistance, their structures are mostly horizontally or at a single angle, making it difficult to form a continuous "material receiving-lifting-unloading" functional chain on the ground. Especially at the transition points where the frame shifts from horizontal to inclined sections, the lack of dedicated transition support structures and guiding devices leads to unstable chain plate operation, easily resulting in interference between the chain plate and the frame, jamming, or material accumulation and blockage. Furthermore, existing plate feeders mostly rely on concrete foundations or fixed steel structures for support, making direct installation on the open ground impossible. This results in complex construction, high installation costs, and unsuitability for frequent relocation or temporary storage yard operations. When conveying wet materials, highly viscous materials with high water content, or large pieces of material, material accumulation is particularly prone to occur in transition areas, increasing chain plate running resistance, accelerating chain link wear, and even causing shutdowns.

[0005] For example, the surface feeder disclosed in patent document CN103640844A forms a bulk material conveying path by setting up horizontal and inclined sections, and adopts a ring conveying structure composed of chains, chain drive rods, and belts. It also has an organic support device to support the overall machine body. However, this technical solution still has a series of structural deficiencies. First, the chain conveying system in this document is a "belt + chain drive rod" structure. It does not disclose the running trajectory of the chain plate at the bend, nor does it set up an arc transition roller structure to connect the horizontal and inclined sections. Therefore, its conveying surface is a rigid angle connection at the turning point, lacking the support and load reduction capacity required for the chain plate during the bending transition. This easily causes the belt or chain to jump, impact, and deviate during operation, making it difficult to meet the continuous transition conveying requirements of heavy-duty, impactful bulk materials. Second, although the document discloses that the baffle plate is located at the turning point, its baffle plate is only used to prevent the bulk material from spreading to the inclined section. It does not form an adjustable structure that cooperates with the chain plate (or conveying surface). This easily leads to material accumulation at the turning point, affecting the stability of the equipment operation. Furthermore, the body support device in this document only supports the inclined portion of the body and does not form a dedicated support frame structure for the bending points. This fails to effectively distribute the concentrated load generated at the bends, leading to deformation or excessive localized stress on the conveyor surface at the bends, which is detrimental to the long-term stable operation of the equipment in harsh surface environments. In summary, CN103640844A still has significant shortcomings in terms of transition support for bending structures, baffle gap adjustment capability, and adaptability to heavy-duty conditions.

[0006] Furthermore, CN114803301B discloses a plate feeder, whose feeding mechanism includes a conveyor chain, a support plate, a support beam, and spring assemblies, etc., to withstand the impact loads of ore and other bulk materials and improve the stress conditions during the feeding process. This technical solution improves the load-bearing capacity and operational stability of the equipment by strengthening the chain plate structure and adding support components. It belongs to a typical plate / chain plate type feeding equipment structural design and has been applied in bulk material feeding scenarios such as mining and metallurgy.

[0007] Therefore, the existing technology urgently needs a continuous feeding surface feeder that can: (1) directly withstand the unloading impact of heavy-duty equipment such as dump trucks and loaders; (2) be stably arranged in the ground environment without complex foundations; and (3) have a reliable chain plate bending transition structure and can prevent jamming and material accumulation at the turning point, so as to meet the actual needs of large-scale bulk material surface transportation operations. Utility Model Content

[0008] The technical problem to be solved by this utility model is to overcome the existing defects and provide a continuous feeding surface feeder. By setting up structures such as arc transition rollers, support guide rollers, baffles and adjustment limit plates at the transition between the horizontal and inclined sections of the frame, the surface bulk material can be stably, efficiently and reliably conveyed in the conveying path of receiving-transition-lifting-unloading, which can effectively solve the problems in the background technology.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a continuous surface feeder, comprising a chain plate, a frame, a baffle, a drive unit, a machine support frame, a chute, a head wheel assembly, and a tail wheel assembly. The frame is sequentially provided with a horizontal section for receiving material and an inclined section for lifting material along the material conveying direction, with a turning point between the horizontal and inclined sections. The chain plate is composed of multiple chain plate sections connected sequentially by hinge pins. Chains meshing with the head wheel assembly and the tail wheel assembly are provided on both sides of the chain plate. The chain plate is wound between the head wheel assembly and the tail wheel assembly and circulates along the horizontal and inclined sections of the frame under the drive of the drive unit. Supporting guide rollers for supporting the chain plate are respectively provided on the horizontal and inclined sections of the frame, and an arc transition is provided at the bends of the frame. The rollers, specifically the arc transition rollers, guide the chain plate to smoothly transition from horizontal to inclined operation when passing through the turning point. These arc transition rollers provide rolling support for the chain plate and material as it passes through the turning point, distributing the concentrated load at the turning point. The machine support frame is located below the turning point of the frame and is fixedly connected to the horizontal and inclined sections of the frame. This support frame provides support for the turning structure, including the support guide rollers or arc transition rollers. A baffle is positioned above the chain plate and fixed at the turning point of the frame. The lower edge of the baffle is close to the bearing surface of the chain plate, and the upper edge is higher than the material accumulation height on the chain plate. This baffle guides and limits the material as the chain plate passes through the turning point, creating a self-cleaning structure at the turning point, thereby reducing material accumulation and adhesion at the turning point.

[0010] Furthermore, the support guide rollers are continuously arranged along the length of the frame in the horizontal and inclined sections, and the arc transition rollers form an arc transition section at the bend of the chain plate. The outer circular surface of the arc transition rollers makes rolling contact with the chain plate or the chain on both sides of the chain plate, which is used to provide additional support when the chain plate passes through the turning point, reducing the local contact pressure and wear of the chain plate. The arc transition section is located at the turning point between the horizontal and inclined sections, and the radius of curvature of the arc transition section is determined according to the pitch and thickness of the chain plate to ensure that the chain plate does not bend excessively or interfere when bending at the turning point.

[0011] Furthermore, the baffle is arranged laterally along the width of the frame and is basically perpendicular to the running direction of the chain plate. An adjusting limit plate is provided at the vertical corresponding position of the baffle and the chain plate. The adjusting limit plate is slidably connected to the baffle and the two are fixed by bolts. The gap between the baffle and the chain plate can be adjusted to meet the needs of conveying different types of materials. This gap is used to limit the front-to-back and lateral spillage of materials at the turning point, while not directly contacting the chain plate.

[0012] Furthermore, the chute is arranged on the inclined section of the frame, with the opening of the chute facing the unloading direction of the chain plate. The chute is used to receive the bulk material unloaded by the chain plate and guide the bulk material to a predetermined stacking area or downstream conveying equipment.

[0013] The bottom of the frame is provided with a support component that contacts the ground surface or a simple foundation. The machine body support frame is connected to the support component, so that this continuous feeding surface feeder can be directly deployed and used in surface working conditions such as open mines, construction yards or waste treatment plants.

[0014] The chain plate is a heavy-duty wear-resistant plate chain plate structure, used to withstand the impact of blocky, granular or high-moisture bulk materials directly unloaded by dump trucks or loaders, and to achieve high-load, continuous surface feeding operations under the drive of the drive unit.

[0015] Furthermore, the drive unit includes a motor, a coupling, and a reducer. The output end of the motor is connected to the reducer through the coupling, and the output end of the reducer is fixedly connected to the head wheel assembly. The drive unit is used to drive the chain plate to circulate along the horizontal and inclined sections of the frame.

[0016] In this invention, the chain plate circulates between the horizontal section and the inclined section of the frame. The horizontal section of the frame is set as the feeding end. Driven by the head wheel assembly, the chain plate transports the material from the horizontal section to the inclined section and completes the unloading at the end of the inclined section.

[0017] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model sets arc transition rollers at the transition between the horizontal and inclined sections of the frame, and sets support guide rollers on the two sections of the frame respectively, so that the chain plate can smoothly transition along the arc trajectory, avoiding the problems of jumping, impact and chain plate interference caused by the rigid angle formed at the bending point of the conveying surface in the prior art; this structure can significantly reduce the mutual wear between the chain plate and the frame, improve the stability of the chain plate in continuous operation under complex surface conditions, and make the whole machine more reliable when handling large impact and high load bulk materials.

[0018] 2. This utility model sets up a machine body support frame at the turning point. The support frame forms an integral structure with the horizontal and inclined sections of the frame, providing effective load-bearing support for the turning components such as the guide roller and the arc transition roller, so that the concentrated load on the bending point is evenly distributed. By enhancing the structural rigidity of the turning area, problems such as local deformation of the frame, chain plate deviation and structural fatigue caused by vibration can be avoided, thereby significantly improving the long-term performance of the equipment in harsh environments such as open-air storage yards and mines.

[0019] 3. A baffle is installed above the chain plate, and an adjustable limiting plate is added at the position of the baffle corresponding to the chain plate. The gap between the baffle and the chain plate can be adjusted according to different material characteristics, thus being compatible with various operating scenarios of blocky, granular, wet and high-moisture bulk materials. The baffle and the adjustable limiting plate together form a material guiding and limiting structure, which not only prevents the material from spilling forward, backward and laterally at the turning point, but also promotes the natural shedding of the attached material during the bending transition of the chain plate, forming a self-cleaning effect, avoiding accumulation and blockage in the turning area, and improving the continuous and stable operation capability of the equipment.

[0020] 4. This equipment can directly withstand the impact load generated by dump trucks or loaders unloading, and after lifting the material along the inclined section, it completes the unloading at the end of the inclined section of the frame, realizing the directional conveying and stacking of materials. This equipment can be directly installed and used on the ground without the need to build a pit or complex foundation. Combined with the guiding effect of the chute at the unloading end of the inclined section, the bulk material can accurately fall into the predetermined stacking area or downstream process equipment. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a top view of the structure of this utility model.

[0022] In the diagram: 1 chain plate, 2 frame, 3 baffle, 4 drive unit, 5 machine body support frame, 6 chute, 7 head wheel group, 8 tail wheel group, 9 support guide roller, 10 arc transition roller, 11 adjustment limit plate. Detailed Implementation

[0023] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 utility model 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. Example 1

[0024] Please see Figure 1-3 This utility model provides a technical solution: a continuous surface feeder, comprising a chain plate 1, a frame 2, a baffle 3, a drive unit 4, a machine body support frame 5, a chute 6, a head wheel assembly 7, a tail wheel assembly 8, a support guide roller 9, an arc transition roller 10, and an adjustment limit plate 11.

[0025] The frame 2 is provided with a horizontal section for receiving bulk materials and an inclined section for unloading materials in sequence along the material conveying direction, with a turning point between the two; the frame 2 is preferably a welded steel structure to adapt to long-term operation in open-air, ground, and high-load environments; the bottom of the frame 2 is provided with support components that are in contact with the ground or a simple foundation, so that the equipment can be directly arranged and used without a civil engineering foundation.

[0026] Chain plate 1 is composed of multiple chain plate sections connected sequentially by hinge pins. The chain plate sections on both sides are fixedly connected to the chain to form a complete heavy-duty plate chain plate assembly. Chain plate 1 is wound between tail wheel group 8 and head wheel group 7, and runs cyclically along the inclined and horizontal sections of frame 2 under the drive of drive unit 4. Drive unit 4 includes a motor, coupling and reducer. The output end of reducer is fixedly connected to head wheel group 7, and the chain plate is driven by head wheel group to achieve cyclic conveying.

[0027] Supporting guide rollers 9 are arranged on the inclined and horizontal sections of the frame 2, respectively. The supporting guide rollers 9 are used to provide rolling support for the chain plate 1, so that the chain plate remains stable during horizontal and inclined operation. In order to make the chain plate smoothly transition from inclined operation to horizontal operation when passing through the turning point, an arc transition roller 10 is provided at the turning point of the frame 2. The arc outer surface of the arc transition roller 10 makes rolling contact with the chain plate 1 or the chain, so that the chain plate bends according to the preset arc trajectory during the bending process, avoiding excessive deflection of the chain plate or interference with the frame.

[0028] The arc transition roller 10 not only provides smooth guidance at the bend of the chain plate, but also provides auxiliary support for the chain plate and the material it carries, so that the concentrated load at the turning point is dispersed, thereby avoiding the problem of excessive local stress on the chain plate at the bend, which could lead to structural damage.

[0029] To further improve the structural stability of the transition area, a body support frame 5 is installed below the transition point of the frame 2. The body support frame 5 is fixedly connected to both the inclined and horizontal sections of the frame 2 to form an integral support structure. This support frame can effectively withstand the loads from the chain plate, the support guide roller, and the arc transition roller, thereby enhancing the rigidity of the entire transition mechanism and preventing the equipment from deforming, displacing, or vibrating under heavy load conditions.

[0030] A baffle 3 is installed at the bend of the frame above the chain plate 1. The baffle 3 is arranged along the width of the frame and perpendicular to the running direction of the chain plate. The lower edge of the baffle 3 is close to the bearing surface of the chain plate 1, and the upper edge is higher than the maximum accumulation height of the material. It is used to restrict the forward and lateral flow of the material at the bend. An adjustable limiting plate 11 is installed at the position of the baffle 3 corresponding to the chain plate. The adjustable limiting plate 11 and the baffle 3 are slidably connected by a bolt assembly. The gap between the baffle and the chain plate can be adjusted according to the characteristics of the material such as particle size and moisture content to meet the feeding requirements of different materials. The adjustable limiting structure formed by the baffle and the adjustable limiting plate can guide the material to move stably during the bending process of the chain plate and prevent the material from accumulating at the bend.

[0031] When the chain plate passes through a turning point, due to the change in running direction, speed, and the guiding effect of the baffle, the wet or sticky material adhering to the surface of the chain plate can naturally fall off, thereby achieving a self-cleaning effect. This further prevents the material from accumulating, blocking, or adhering in the turning area, improving the continuity and reliability of equipment operation.

[0032] In this invention, after the chain plate receives heavy bulk materials in the horizontal section, it enters the inclined section and conveys the materials upward along the inclined section under the support of the guide rollers. When the chain plate runs to the end of the inclined section of the frame 2, the materials are naturally unloaded from the chain plate under the action of gravity and guided to the predetermined stacking area or downstream processing equipment through the chute 6 set below the end of the inclined section, making the entire conveying and unloading process more accurate and reliable.

[0033] Working principle This utility model's continuous feeding surface feeder, driven by a drive unit, causes the chain plate to circulate between the horizontal and inclined sections of the frame. Dump trucks, loaders, or excavators directly unload bulk materials onto the horizontal section of the frame 2, which serves as the feed end of the equipment. The chain plate 1 enters the bearing area at the tail wheel assembly 8 and receives the material. The chain plate runs smoothly along the horizontal section and conveys the material forward under the rolling support of the support guide roller 9. When the chain plate reaches the transition point between the horizontal and inclined sections, it bends along a preset arc trajectory using the arc transition roller 10 set in the transition area, smoothly transitioning the chain plate's running direction from horizontal to inclined. The arc transition roller simultaneously provides rolling support for the chain plate and the material, effectively distributing the concentrated load at the transition point and preventing the chain plate from jumping, impacting, or interfering with the frame. The body support frame 5 set below the transition point further improves the load-bearing capacity and stability of the overall structure of the bending area, adapting to high-impact and high-load conditions on the ground.

[0034] When the chain plate bends along the arc transition section, due to the change in running direction and force state, the sticky material adhering to the chain plate naturally falls off under the guidance / limiting action of gravity, inertia, and the baffle 3 and adjusting limit plate 11, thus forming a self-cleaning effect and preventing material from accumulating and clogging in the turning area. After the chain plate enters the inclined section, it continues to lift the material upward under the support of the support guide roller 9, so that the material is transported to a high position along the inclined section and unloaded at the upper end of the frame or the end of the inclined section. The unloaded bulk material enters the chute 6 and is guided to the predetermined stacking area or downstream equipment. Through the synergistic effect of the above structures, this utility model can realize the continuous feeding, lifting and unloading of bulk materials in complex surface environments, and has significant advantages such as stable operation, strong self-cleaning ability and adaptability to surface layout.

[0035] The foregoing has shown and described the basic principles, main features and advantages of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope thereof, and all such changes and modifications fall within the scope of this utility model as claimed.

Claims

1. A continuous surface feeder, comprising a chain plate (1), a frame (2), a baffle (3), a drive unit (4), a machine support frame (5), a chute (6), a head wheel assembly (7), and a tail wheel assembly (8), characterized in that: The frame (2) is provided with a horizontal section for receiving the material and an inclined section for lifting the material in sequence along the material conveying direction, and a turning point is formed between the horizontal section and the inclined section; the chain plate (1) is wound between the head wheel group (7) and the tail wheel group (8) and runs cyclically along the horizontal section and the inclined section of the frame (2) under the drive of the drive unit (4); the horizontal section and the inclined section of the frame (2) are respectively provided with support guide rollers (9) for supporting the chain plate (1), and the bending point of the frame (2) is provided with An arc transition roller (10) is provided, which guides the chain plate (1) to smoothly transition from horizontal to inclined operation when passing through the turning point; the machine support frame (5) is arranged below the turning point of the frame (2) and is fixedly connected to the horizontal and inclined sections of the frame (2); the baffle (3) is set above the chain plate (1) and fixed at the turning point of the frame (2); the lower edge of the baffle (3) is close to the bearing surface of the chain plate (1), and the upper edge is higher than the accumulation height of the material on the chain plate (1).

2. The continuous surface feeder according to claim 1, characterized in that: The support guide roller (9) is continuously arranged in the horizontal and inclined sections along the length of the frame (2). The arc transition roller (10) makes the chain plate (1) form an arc transition section at the bend. The outer circular surface of the arc transition roller (10) is in rolling contact with the chain plate (1) or the chains on both sides of the chain plate (1).

3. The continuous surface feeder according to claim 1, characterized in that: The baffle (3) is arranged laterally along the width direction of the frame (2) and is basically perpendicular to the running direction of the chain plate (1). An adjustment limit plate (11) is provided at the vertical corresponding position of the baffle (3) and the chain plate (1). The adjustment limit plate (11) is slidably connected to the baffle (3) and the two are fixed by bolts.

4. A continuous surface feeder according to claim 1, characterized in that: The chute (6) is set on the inclined section of the frame (2), and the opening of the chute (6) faces the unloading direction of the chain plate (1).

5. A continuous surface feeder according to claim 1, characterized in that: The drive unit (4) includes a motor, a coupling and a reducer. The output end of the motor is connected to the reducer through the coupling, and the output end of the reducer is fixedly connected to the head wheel assembly (7).

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