Split type material guiding device for roadway transfer point

Abstract

This invention discloses a split-type material guiding device for a roadway transfer point, comprising two L-shaped support plates, each consisting of a first plate and a second plate. The two first plates are detachably connected by a belt, and the two second plates face the same direction. The two support plates and the belt form a material transfer channel, with the top of the material transfer channel located at the unloading point of the feeding belt and the bottom located at the receiving point of the receiving belt. Several transverse support plates are spaced apart at the bottom of the two first plates along the direction of the material transfer channel. By using two L-shaped support plates as the main frame, and utilizing the detachably connected belt between the first plates and the spaced transverse support plates at the bottom, a stable material transfer channel is formed. This split-type structural design allows each component of the device to be independently transported and assembled, achieving lightweight and modular design, and significantly improving the operating efficiency of the underground material transfer system.

Description

Technical Field

[0001] This invention belongs to the technical field of material transport equipment in tunnels, and particularly relates to a split-type material guiding device at a tunnel transfer point. Background Technology

[0002] Transfer points are the points where coal and gangue are unloaded from one transport device and transferred to another underground transport device. They are the material transfer hubs of underground belt conveyor and scraper conveyor systems. When the vertical drop of materials at a transfer point is greater than 0.5m, it is considered a large drop condition, in which case buffer chutes and flow guiding structures must be installed.

[0003] Common buffer chutes are typically constructed from spliced ​​steel plates, forming a one-piece structure with fixed dimensions, and are directly suspended from the lower part of the conveyor head above. Due to the one-piece design, the overall weight of the buffer chute is relatively large (usually between tens and hundreds of kilograms), requiring multiple people to lift it during installation or dismantling, at least 3-4 people working together, taking 2-3 hours per operation, and it is not compatible with transfer equipment of different heights. Summary of the Invention

[0004] The purpose of this invention is to provide a split-type material guiding device for a roadway transfer point, which designs the buffer chute as a split type and is composed of multiple parts, thereby reducing the difficulty of installation / disassembly.

[0005] The present invention adopts the following technical solution: a split material guiding device for a roadway transfer point, comprising two L-shaped support plates, the support plates being composed of a first plate and a second plate; The two first plates are detachably connected by a belt, the two second plates face the same direction, and the two support plates and the belt form a material transfer channel. The top of the material transfer channel is located at the unloading point of the feeding belt, and the bottom of the material transfer channel is located at the receiving point of the receiving belt. Several horizontal support plates are spaced apart at the bottom of the two first plates along the material transfer channel.

[0006] The beneficial effects of this invention are as follows: by using two L-shaped support plates as the main frame, and utilizing the belts that are detachably connected between the first plates and the horizontal support plates spaced at the bottom, a stable material transfer channel is formed together; this split structure design allows each component of the device to be handled and assembled independently, achieving lightweighting and modularization, so that the handling and installation process in narrow tunnels can be completed quickly by a small number of personnel without the need for large lifting equipment, thereby effectively solving the severe challenges of installation and maintenance difficulties and insufficient environmental adaptability faced by existing material guiding devices, and significantly improving the operating efficiency, installation flexibility and operational reliability of the underground material transfer system. Attached Figure Description

[0007] Figure 1This is a schematic diagram of the structure of a split-type material guiding device at a roadway transfer point according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the bottom structure of a split-type material guiding device at a roadway transfer point according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the state of a split-type material guiding device at a roadway transfer point without a belt installed, according to an embodiment of the present invention. Figure 4 This is a schematic diagram showing the state after the guide plate is installed in an embodiment of the present invention; Figure 5 This is a reference diagram showing the usage state of an embodiment of the present invention.

[0008] Among them: 10. Support plate; 11. Support plate mounting hole; 12. Support fixing hole; 13. Belt locking hole; 14. Adjusting rod fixing hole; 20. Belt conveyor; 30. Horizontal support plate; 40. Angle adjustment rod; 50. Feeding belt; 60. Receiving belt; 70. Tunnel roof; 80. Tunnel floor; 90. Guide plate. Detailed Implementation

[0009] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0010] This invention discloses a split-type material guiding device for a roadway transfer point, such as... Figure 1 , Figure 2 and Figure 5 As shown, it includes two L-shaped support plates 10, each consisting of a first plate and a second plate. The two first plates are detachably connected by a belt 20. The two second plates face the same direction. The two support plates 10 and the belt 20 form a material transfer channel. The top of the material transfer channel is located at the unloading point of the feeding belt 50, and the bottom of the material transfer channel is located at the receiving point of the receiving belt 60. Several transverse support plates 30 are spaced apart at the bottom of the two first plates along the direction of the material transfer channel.

[0011] By using two L-shaped support plates as the main frame, and utilizing the detachable belts connecting the first plates and the horizontal support plates spaced at the bottom, a stable material transfer channel is formed. This split-structure design allows each component of the device to be handled and assembled independently, achieving lightweighting and modularization. This enables the handling and installation process in narrow tunnels to be completed quickly by a small number of personnel without the need for large lifting equipment. This effectively solves the severe challenges of installation and maintenance difficulties and insufficient environmental adaptability faced by existing material guiding devices, and significantly improves the operating efficiency, installation flexibility and operational reliability of the underground material transfer system.

[0012] Specifically, the L-shaped support plate 10 forms the main framework of the entire material guiding device. It adopts a split-structure design to reduce the weight of individual components, facilitating manual handling and assembly in narrow tunnel spaces. The support plate 10 can be welded or bent from steel plates, preferably made of wear-resistant steel to withstand the long-term impact of underground materials. The first and second plates are connected perpendicularly to each other, forming a stable L-shaped cross-section. This geometry ensures structural strength and provides an installation reference for subsequent belt connections and lateral supports.

[0013] like Figure 1 As shown, only one support plate 10 is displayed on each side in this embodiment. It should be noted that the size and number of support plates 10 can be designed according to the height difference between the feeding belt 50 and the receiving belt 60. For example, when the height difference is large, each side can be formed by connecting multiple support plates 10 (preferably with bolts).

[0014] The belt 20, acting as a flexible connector, spans between the first plates of the two support plates 10, thus combining the two independent support plates 10 into a single frame. The detachable connection of the belt 20 can be achieved using bolts, clips, and other fasteners, eliminating the need for large auxiliary equipment during on-site installation; simply laying and securing the belt 20 is sufficient. This design not only simplifies the installation process but also allows the belt 20 itself to form a sidewall of the material transfer channel. Utilizing its inherent flexibility, it provides a buffer during material descent, reducing the rigid impact on the device.

[0015] In this structure, two L-shaped support plates 10 are arranged symmetrically or parallel, with their second plates forming two opposite sidewalls of the material transfer channel. Since the two second plates face the same direction, together with the connecting belt 20, the three elements enclose a roughly U-shaped or closed material guiding space. This enclosed structure effectively constrains the movement trajectory of the material after it is unloaded from the feeding belt 50, preventing material from splashing or overflowing to the sides during transfer, and ensuring that the material can pass through the channel in an orderly and concentrated manner.

[0016] The bottom of the material transfer channel is located above the receiving point of the receiving belt 60. Specifically, the material transfer channel serves to connect upstream and downstream equipment in terms of spatial location. Its top opening faces the end of the material throwing trajectory of the feeding belt 50 (near the tunnel ceiling 70), and can receive the material unloaded from the feeding belt 50; its bottom opening extends to the receiving area of ​​the receiving belt 60 (near the tunnel floor 80), accurately guiding the material to the central area of ​​the receiving belt 60. It should be understood that by adjusting the installation angle or position of the support plate 10, the inclination angle and extension length of the material transfer channel can be flexibly changed to adapt to the working conditions of tunnel transfer points with different height differences.

[0017] Transverse support plates 30, acting as reinforcing components, are arranged sequentially between the bottoms of the two first plates along the material flow direction. Both ends of the transverse support plates 30 are fixedly connected to the first plates on both sides, increasing the overall lateral stiffness and torsional resistance of the device. When a large amount of material accumulates on the conveyor belt 20, the transverse support plates 30 can withstand the resulting radial tension, preventing the first plates from deforming inwards or outwards and ensuring the stability of the cross-sectional dimensions of the material transfer channel. The number and spacing of the transverse support plates 30 can be set according to the actual span and load conditions to achieve a balance between structural strength and device weight.

[0018] Before the material transfer operation begins, the two L-shaped support plates 10 are first moved to the designated position, and the belt conveyor 20 is connected between the first plates of the two support plates 10 to form an enclosed material transfer channel. Then, the entire device is hoisted or supported and fixed, so that the top entrance of the material transfer channel is aligned with the unloading point of the feeding belt 50, and the bottom exit is aligned with the receiving point of the receiving belt 60. When the feeding belt 50 transports material to the unloading point, the material falls into the material transfer channel under gravity. During this process, the material first impacts the belt 20, which undergoes slight elastic deformation after being stressed, absorbing some of the impact kinetic energy. The material then slides down the channel formed by the two second plates and the belt 20. The transverse support plate 30 continuously provides support to the first plate during the material's descent, resisting the tension generated by the material on the belt 20 and preventing the channel from collapsing or deforming. Finally, the material smoothly falls onto the receiving belt 60 at the bottom of the channel, completing the transfer process.

[0019] The use of a split, detachable connection structure with two L-shaped support plates 10 and a belt 20, replacing the traditional integrated heavy-duty chute, significantly reduces the weight of individual components, making manual handling possible and solving the problem of difficult equipment installation in narrow aisle spaces. Simultaneously, the flexible connection characteristics of the belt 20 allow it to buffer material impacts, extending the device's service life. Furthermore, the intermittent placement of transverse support plates 30 at the bottom of the first plate effectively enhances the overall structural rigidity and stability of the device, ensuring that the geometry of the material transfer channel remains unchanged under long-term high-load operation, thus guaranteeing the smoothness and reliability of material transfer.

[0020] In one embodiment, the split-type material guiding device further includes an angle adjusting rod 40; the angle adjusting rod 40 includes a connecting plate and a support rod; one end of the support rod is fixedly connected to the connecting plate; the connecting plate is bolted to the top of the first plate, and the top of the first plate has an adjusting rod fixing hole 14 for the connecting bolt to pass through; the other end of the support rod is connected to the base frame of the feeding belt 50, and the tilt angle of the split-type material guiding device is different when the installation position of the support rod on the base frame is different.

[0021] The angle adjusting rod 40 is the core component for achieving adaptive angle adjustment of the material guiding device. Unlike the cumbersome methods of traditional technologies that use welded fixed brackets or manual height adjustment, this invention designs an angle adjusting mechanism based on mechanical transmission. The angle adjusting rod 40 mainly consists of a connecting plate and a support rod, which are typically connected by welding or high-strength bolts to ensure structural rigidity. The connecting plate serves as the interface between the angle adjusting rod 40 and the main body of the material guiding device, while the support rod acts as a length support to bear the reaction force from the base of the feeding belt 50. In practical applications, the connecting plate is attached to the bottom surface of the first plate of the support plate 10, and a fastening connection is achieved through connecting bolts passing through the adjusting rod fixing hole 14. The design of the adjusting rod fixing hole 14 allows the connecting bolts to be adjusted within a certain range of locking position, thereby adapting to different tilt postures of the support rod.

[0022] The other end of the support rod is connected to the base frame of the feeding belt 50. This connection allows the material guiding device to be suspended below the head of the feeding belt 50. In actual operation, by changing the installation position of the support rod on the base frame (e.g., adjusting the height or horizontal distance between the bottom end of the support rod and the connection point with the base frame), the entire material guiding device can be forced to rotate around its relative connection point with the feeding belt 50, thereby changing the inclination angle of the material transfer channel. This structural design overcomes the limitation of the traditional integrated chute having an adjustable angle, allowing the inclination angle of the split material guiding device to be continuously adjusted within a certain range (e.g., 30° to 75°).

[0023] In one implementation, the transverse support plate 30 is a strip plate, and its two ends are respectively connected to the two first plates by bolts through the support plate mounting holes 11 opened on the first plate.

[0024] The transverse support plate 30 serves as a transverse connection and support component at the bottom of the device. Its main function is to enhance the transverse rigidity between the two first plates, which can effectively prevent the device from deforming under the impact of materials, thereby maintaining the stability of the cross-sectional shape of the material transfer channel.

[0025] Mounting holes 11 are formed on the first plate for positioning and securing the transverse support plate 30. Bolted connections, as a detachable rigid connection method, can be implemented using standard hexagonal head bolts with spring washers and nuts, or other threaded connectors that provide sufficient preload. The mounting holes 11 and bolts allow for quick assembly and disassembly of the transverse support plate 30; when replacement or maintenance is required, simply loosening the bolts allows the transverse support plate 30 to be removed from between the two first plates without damaging the overall structure.

[0026] Based on the above structure, a standardized and modular connection between the transverse support plate 30 and the first plate is achieved. Since the transverse support plate 30 is connected to the two first plates respectively through the support plate mounting holes 11 and bolts, this symmetrical connection method ensures the uniformity of force distribution on the device, effectively improving the overall structural strength and impact resistance of the material guiding device, enabling it to better withstand the impact loads during underground material transfer, thereby extending the device's service life. Simultaneously, the detachable nature of the bolted connection makes the split-type material guiding device more flexible and convenient during underground installation, disassembly, and transportation, reducing the labor intensity of workers and solving the technical problems of the traditional integrated chute's large weight and difficult installation.

[0027] The support plate 30 is connected to the bottom surface of the first plate, and the belt 20 is connected to the top surface of the first plate. Based on this layered layout, the belt 20, which bears the impact of materials and forms a transfer channel, is arranged above the first plate, thus directly receiving materials from the feeding belt 50. Simultaneously, the transverse support plate 30, which enhances structural rigidity, is arranged below the first plate, providing effective support to the bottom of the transfer channel. By placing the belt 20 and the transverse support plate 30 on the top and bottom surfaces of the first plate respectively, not only is spatial interference that might occur between them on the same installation plane avoided, ensuring the flat laying of the belt 20 and the stable installation of the transverse support plate 30, but the overall mechanical transmission path of the device is also optimized, preventing localized stress concentration or structural deformation caused by conflicting connection points.

[0028] like Figure 3 As shown, belt locking holes 13 are evenly spaced along the length of the first plate. These belt locking holes 13 are used to engage with bolts or other fasteners to fix the belt 20 to the first plate. Because multiple belt locking holes 13 are evenly spaced along the length of the first plate, multi-point fixing of the belt 20 is achieved, effectively enhancing the connection strength between the belt 20 and the first plate. This prevents the belt 20 from shifting or loosening during material impact and conveying, thus ensuring the stability and sealing of the material transfer channel. The specific number and spacing of the belt locking holes 13 can be set according to the length of the first plate and the width of the belt 20. This achieves reliable fixing of the belt 20, solving the problems of loose belt connections and easy loosening, and improving the service life of the device and the stability of material conveying.

[0029] The first plate / second plate has a strip-shaped support and fixing hole 12, which is a strip-shaped hole; it also includes a wire rope, which is detachably connected to the first plate / second plate through the support and fixing hole 12, and the top of the wire rope is fixed to the top plate of the roadway.

[0030] The extension direction of the support fixing hole 12 can be consistent with the length direction of the support plate 10, or it can be set to other angles according to actual suspension requirements. It is mainly used to provide adjustment margin for the suspension position to accommodate errors in different roadway heights or installation positions. The length dimension of this strip hole can be designed according to the required adjustment stroke.

[0031] In terms of specific connection methods, one end of the wire rope 70 passes through the support fixing hole 12 and is locked and fixed to the support plate 10 with standard rigging accessories such as rope clamps and shackles, thus achieving a detachable connection. The top end of the wire rope 70 is fixed to the roadway roof, and its fixing method can adopt existing roadway roof fixing technologies such as anchor bolt hanging and expansion bolt hooks. The diameter specification of the wire rope 70 should be selected according to the overall weight and safety factor of the material guiding device to ensure sufficient tensile strength and safety reliability. This design breaks through the limitations of traditional rigid supports, which have high installation accuracy requirements and poor adaptability. Utilizing the flexibility of the wire rope, it can effectively buffer the impact vibration generated when the material falls, and avoid the fatigue loosening or even breakage of rigid connecting parts due to long-term vibration, thereby significantly improving the structural stability and service life of the device under complex working conditions.

[0032] The above method achieves stable suspension and flexible adjustment of the material guiding device on the tunnel roof. By opening strip-shaped support and fixing holes 12 on the support plate 10 and using steel wire ropes 70 for suspension and fixation, the flexible characteristics of the steel wire ropes effectively absorb the impact energy during material transfer, solving the technical problems of easy shaking and damage to connecting parts during operation. Furthermore, the strip-shaped hole design provides the necessary degree of adjustment freedom for on-site installation, allowing the device to quickly adapt to different installation environments and significantly reducing installation difficulty and commissioning time. In addition, the steel wire rope suspension structure also has the advantages of being lightweight and easy to assemble and disassemble, further improving the maintainability and transfer efficiency of the device.

[0033] The belt locking hole 13, the support plate mounting hole 11, and the support fixing hole 12 are arranged sequentially along a first direction, which is the direction from the belt 20 to the second plate. The belt locking hole 13 is used to fix the belt 20, the support plate mounting hole 11 is used to install the transverse support plate 30, and the support fixing hole 12 is used to connect the wire rope. By arranging the above mounting holes sequentially along the direction from the belt 20 to the second plate, the fixing area of ​​the belt 20, the connection area of ​​the transverse support plate 30, and the suspension area of ​​the wire rope are spatially separated in an orderly manner, avoiding positional interference between different connecting components during installation. This layout conforms to the assembly logic from the material contact surface (belt 20) to the external support structure (second plate side), allowing operators to sequentially complete belt locking, transverse support reinforcement, and external suspension fixing during installation, improving assembly efficiency and structural compactness. At the same time, the orderly distribution of holes helps to disperse connection stress and reduce the problem of local strength weakening caused by excessive concentration of holes. By optimizing the layout of various mounting holes on the support plate, the problems of chaotic layout of mounting holes, affecting structural compactness and assembly sequence were solved, thereby improving the overall coordination and assembly convenience of the device.

[0034] A guide plate 90 is also installed on the first plate. The guide plate 90 has a certain height and thickness, and its axis is set to intersect with the axis of the belt, so as to divide the material into different material guide channels to adapt to different application scenarios.

[0035] like Figure 4 As shown, a specific installation method of the guide plate 90 is provided. A guide plate 90 is installed on the upper part of the split material guiding device. The guide plate 90 extends from one first plate to another first plate. The main function of this guide plate 90 is to target the thin material mixed in the coal or gangue (i.e., materials with high water content, which are in the form of thin mud).

[0036] Since the material falls from the upper feeding belt 50, the process of the material falling is a free fall process. Materials such as coal and gangue are heavy and have a large forward inertia, so their landing point on the split-type material guiding device is further forward (i.e., Figure 4 The winning bid for the "gangue / coal" location is the point where coal and gangue land on the conveyor belt. The weight of the rare cargo is small, and the inertia in the forward direction is small. Its landing point on the split-type material guiding device is further back, above the upper guide plate 90. It will be affected by the upper guide plate 90 and flow downwards near the junction of the first and second plates.

[0037] In addition, two guide plates 90 are installed at the bottom of the split material guiding device. These two guide plates 90 can divide the coal and gangue into three areas for falling. These three parts of coal and gangue will fall at different positions on the receiving belt 60, thus playing a role in diverting the flow and avoiding the safety hazards caused by too much coal falling at the same point.

Claims

1. A split-type material guiding device for a roadway transfer point, characterized in that, It includes two L-shaped support plates (10), each support plate (10) being composed of a first plate and a second plate; The two first plates are detachably connected by a belt (20), the two second plates face the same direction, and the two support plates (10) and the belt (20) form a material transfer channel. The top of the material transfer channel is located at the unloading point of the feeding belt (50), and the bottom of the material transfer channel is located at the receiving point of the receiving belt (60). Several transverse support plates (30) are provided at intervals at the bottom of the two first plates along the material transfer channel.

2. The split-type material guiding device for a roadway transfer point as described in claim 1, characterized in that, It also includes an angle adjustment lever (40); The angle adjustment rod (40) includes a connecting plate and a support rod; one end of the support rod is fixedly connected to the connecting plate; The connecting plate is bolted to the top of the first plate, and the top of the first plate has an adjusting rod fixing hole (14) for the connecting bolt to pass through. The other end of the support rod is connected to the base frame of the feeding belt (50). When the installation position of the support rod on the base frame is different, the tilt angle of the split material guiding device is different.

3. The split-type material guiding device for a roadway transfer point as described in claim 2, characterized in that, The transverse support plate (30) is a strip plate, and its two ends are respectively connected to the two first plates by bolts through the support plate mounting holes (11) opened on the first plate.

4. A split-type material guiding device for a roadway transfer point as described in claim 3, characterized in that, The support plate (30) is connected to the bottom surface of the first plate, and the belt (20) is connected to the top surface of the first plate.

5. A split-type material guiding device for a roadway transfer point as described in claim 2, characterized in that, The first plate has belt locking holes (13) evenly spaced along its length.

6. A split-type material guiding device for a roadway transfer point as described in claim 5, characterized in that, The first plate / second plate has a strip-shaped support and fixing hole (12), and the support and fixing hole (12) is a strip-shaped hole; It also includes a steel wire rope, which is detachably connected to the first plate / second plate through the support fixing hole (12), and the top end of the steel wire rope is fixed to the tunnel roof plate.

7. A split-type material guiding device for a roadway transfer point as described in claim 6, characterized in that, The belt locking hole (13), the support plate mounting hole (11), and the support fixing hole (12) are arranged sequentially along a first direction, which is the direction from the belt (20) to the second plate.

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