Modular combined high-strength anchor rod tray

Abstract

The utility model provides a kind of modular combined high-strength anchor rod tray, including center bearing block (1) and peripheral wing board one (2);The outer contour of the center bearing block (1) is circular, and the center is provided with central through-hole (3), and its outer circular face is provided with outer thread structure one (4);The central region of the peripheral wing board one (2) is provided with internal thread hole one (5), and the inner diameter of the internal thread hole one (5) is compatible with the outer diameter of the center bearing block (1);Peripheral wing board one (2) is fixedly sleeved on the outside of center bearing block (1) by the thread cooperation between internal thread hole one (5) and outer thread structure one (4).The tray is simple in structure, flexible in assembly, convenient for transportation and storage, ideal in supporting effect, adaptable to different working conditions and different supporting needs, can complete the assembly, installation and adjustment process quickly on site, greatly improve the construction efficiency of supporting operation, and reduce construction cost.

Description

Technical Field

[0001] This utility model belongs to the technical field of mine support equipment, specifically relating to a modular combined high-strength anchor bolt tray. Background Technology

[0002] As a core method for reinforcing the surrounding rock in coal mines, metal mines, and other underground engineering roadways, the overall effectiveness of the rock bolt support system directly affects the safety and efficiency of underground operations. The rock bolt tray, an indispensable load-bearing component in this system, functions to diffuse and transfer the preload generated by the rock bolt to the surrounding rock surface. By providing sufficient support reaction force, it maintains high preload, effectively constraining rock deformation and forming a stable prestressed load-bearing structure.

[0003] Currently, the vast majority of anchor bolt trays widely used in mines both domestically and internationally are integral structures, meaning they are single metal components formed in one stamping process using molds or machined by machine tools, commonly in square, circular, or rectangular shapes. These traditional trays have mature manufacturing processes, simple structures, and convenient installation, meeting basic support needs for a certain period. However, as coal mining extends to deeper levels, geological conditions become increasingly complex (such as high ground pressure, soft rock, and fault fracture zones), and tunnel cross-sections develop towards larger spans and more irregular shapes, the limitations of traditional integral trays are becoming increasingly apparent: First, their adaptability is poor. The size, shape, and load-bearing capacity of integral trays are fixed at the factory. Faced with the ever-changing tunnel cross-sectional profiles underground (such as arched roofs, sloping sides, and irregular protrusions) and significantly varying surrounding rock strengths, problems often arise such as misfitting between the tray and the rock surface and insufficient bearing area. This leads to ineffective prestress diffusion, easily causing localized warping, tearing, or even overall failure of the tray, resulting in a sudden drop in anchor bolt preload and support system failure. Second, there are bottlenecks in economic efficiency. To cope with different operating conditions, mines need to stock a large number of integral pallets of various specifications and models. This not only occupies huge amounts of inventory funds and vast storage space, but also makes logistics management extremely cumbersome. In the underground transportation process, large integral pallets are bulky and have concentrated weight, making them difficult to handle in narrow and low tunnels, resulting in low efficiency and numerous safety hazards. In addition, when a pallet is damaged due to local overload, even if the rest is intact, the entire pallet must be replaced, causing unnecessary material waste and increased maintenance costs.

[0004] Therefore, there is an urgent need to provide a new type of anchor tray structure that combines high strength, high flexibility, and high economy, which can fundamentally overcome the shortcomings of existing technologies and meet the stringent requirements of modern, efficient mines for support materials that are precise, lightweight, and low-cost. Summary of the Invention

[0005] To address the problems existing in the prior art, this utility model provides a modular high-strength anchor bolt tray. The tray has a simple structure, is flexible in assembly, easy to transport and store, provides ideal support, and can adapt to different working conditions and support requirements. It can quickly complete the assembly, installation and adjustment process on site, which greatly improves the construction efficiency of support operations and reduces construction costs.

[0006] To achieve the above objectives, this utility model provides a modular combined high-strength anchor bolt tray, including a central bearing block and an outer wing plate;

[0007] The outer contour of the central bearing block is circular, with a central through hole in the center and an external thread structure on its outer circular surface.

[0008] The outer wing plate is provided with an internal threaded hole in the central area. The inner diameter of the internal threaded hole is adapted to the outer diameter of the central bearing block. The outer wing plate is fixedly fitted onto the outside of the central bearing block through the threaded engagement between the internal threaded hole and the external threaded structure.

[0009] Furthermore, in order to enable the central bearing block to have greater load-bearing capacity and effectively withstand the pressure of the rock surface and the preload of the locking nut, the top of the central bearing block has a small planar structure and the bottom has a large planar structure. The outer diameter of the part between the small planar structure and the large planar structure gradually increases from the top to the bottom and is arc-shaped and bulging. The central through hole is located in the central area of ​​the small planar structure.

[0010] As a preferred embodiment, the outer contour of the outer wing plate is rectangular or butterfly-shaped.

[0011] Furthermore, in order to assemble multiple peripheral wing plates in a cascaded manner from the inside out, so as to flexibly adjust the pressure-bearing area and shape of the pallet, the outer contour of the first peripheral wing plate is circular, and the outer circular surface is provided with an external thread structure.

[0012] Furthermore, in order to provide a pallet with a more flexible assembly method, it also includes an outer wing plate two. The outer wing plate two has an internal threaded hole two in its central area. The inner diameter of the internal threaded hole two is adapted to the outer diameter of the outer wing plate one, and the internal threaded hole two is adapted to the external thread structure two. The outer wing plate two is fixedly fitted on the outside of the outer wing plate one through the threaded engagement between the internal threaded hole two and the external thread structure two.

[0013] Furthermore, to facilitate more efficient application of preload, the surface of the planar structure is provided with anti-slip texture.

[0014] Furthermore, in order to facilitate the fitting of an additional outer wing plate on the outside of the outer wing plate two, the outer circular surface of the outer wing plate two is provided with an external thread structure three.

[0015] In this invention, an external threaded structure is provided on the outer circular surface of the central bearing block, and an internal threaded hole is provided in the central area of ​​the outer wing plate. This allows the outer wing plate to be fitted onto the outside of the central bearing block via threaded engagement, thus transforming the traditional one-piece pallet into a separate, detachable pallet. Traditional pallets use a one-piece structure with fixed dimensions and shape. This results in poor applicability in wide tunnels, irregularly shaped tunnels, or areas requiring dense support, often necessitating redesign and production of new pallets. This process is not only time-consuming but also costly, significantly reducing construction efficiency. Furthermore, these pallets are large and occupy considerable space, making transportation and handling difficult in narrow underground tunnels, and requiring substantial storage space. Additionally, localized damage to traditional pallets (such as severe deformation or tearing of a corner) often renders the entire pallet unusable, requiring replacement and resulting in significant material waste. Moreover, to meet the most demanding working conditions, the entire pallet is typically made of uniformly high-specification materials, leading to material waste under normal working conditions. This utility model adopts a split, detachable structure. Through threaded connections, reliable connections are ensured. Furthermore, different outer diameters, thicknesses, bearing areas, shapes, and materials of the outer wing plates can be selected and assembled according to different working conditions to better adapt to the requirements of different roadway cross-sections and surrounding rock support strengths, achieving a flexible combination of a single basic system for multiple applications. Simultaneously, this pallet can be disassembled for transportation and storage, greatly saving space occupied during transportation and warehousing. The same space can transport and store a greater number of pallets, significantly reducing logistics and labor costs. In addition, this pallet can adopt a "replace what's damaged" approach; typically, only the outer wing plates need to be replaced, while the central load-bearing block can be reused multiple times, greatly reducing subsequent maintenance costs and material consumption. Moreover, this pallet can implement a comprehensive material strategy. The central load-bearing block, typically using high-strength materials based on maximum stress, can be used, while the outer wing plates, depending on their location, applicable working conditions, and actual potential stress, can be made of slightly lower-strength, more economical materials, achieving optimal configuration of overall performance and cost.

[0016] The pallet has a simple structure, is flexible in assembly, easy to transport and store, provides ideal support, and can adapt to different working conditions and support requirements. It can quickly complete the assembly, installation and adjustment process on site, which greatly improves the construction efficiency of support operations and reduces construction costs. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of one embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the central bearing block in this utility model;

[0019] Figure 3This is a schematic diagram of the outer wing plate of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the outer wing plate two in this utility model;

[0021] Figure 5 This is a structural schematic diagram of another embodiment of the present invention.

[0022] In the diagram: 1. Central bearing block, 2. Outer wing plate one, 3. Central through hole, 4. External thread structure one, 5. Internal thread hole one, 6. Small plane structure, 7. Large plane structure, 8. External thread structure two, 9. Outer wing plate two, 10. Internal thread hole two, 11. External thread structure three. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] like Figures 1 to 5 As shown, the present invention provides a modular combined high-strength anchor bolt tray, including a central bearing block 1 and an outer wing plate 2;

[0025] The outer contour of the central bearing block 1 is circular, with a central through hole 3 in the center and an external thread structure 4 on its outer circular surface; wherein, the diameter of the central through hole 3 is used to pass through the anchor rod.

[0026] The outer wing plate 2 has an internal threaded hole 5 in its central area. The inner diameter of the internal threaded hole 5 is adapted to the outer diameter of the central bearing block 1. The outer wing plate 2 is fixedly fitted onto the outside of the central bearing block 1 through the threaded engagement between the internal threaded hole 5 and the external threaded structure 4.

[0027] In order to enable the central bearing block to have a greater bearing capacity so as to effectively bear the pressure of the rock surface and the preload of the locking nut, the top of the central bearing block 1 is a small plane structure 6 and the bottom is a large plane structure 7. The outer diameter of the part between the small plane structure 6 and the large plane structure 7 gradually increases from the top to the bottom, and at the same time, it is arc-shaped and bulging. The central through hole 3 is located in the central area of ​​the small plane structure 6.

[0028] As a preferred embodiment, the outer contour of the outer wing plate 2 is rectangular or butterfly-shaped.

[0029] In order to assemble multiple peripheral wing plates in a cascaded manner from the inside out, so as to flexibly adjust the bearing area and shape of the pallet, the outer contour of the peripheral wing plate 2 is circular, and the outer circular surface is provided with an external thread structure 8.

[0030] To provide a pallet with a more flexible assembly method, an outer wing plate 2 9 is also included. The outer wing plate 2 9 has an internal threaded hole 2 10 in its central area. The inner diameter of the internal threaded hole 2 10 is adapted to the outer diameter of the outer wing plate 2, and the internal threaded hole 2 10 is adapted to the external threaded structure 2 8. The outer wing plate 2 9 is fixedly fitted on the outside of the outer wing plate 2 through the threaded engagement between the internal threaded hole 2 10 and the external threaded structure 2 8.

[0031] To facilitate more efficient application of preload, the surface of the small planar structure 6 is provided with anti-slip texture.

[0032] To facilitate the installation of additional outer wing plates on the outside of outer wing plate two, an external thread structure three 11 is provided on the outer circular surface of outer wing plate two 9. Based on this, outer wing plate three can be installed on the outside of outer wing plate two 9 by means of threaded connection, and outer wing plate four can be installed on the outside of outer wing plate three by means of threaded connection.

[0033] In this invention, an external threaded structure is provided on the outer circular surface of the central bearing block, and an internal threaded hole is provided in the central area of ​​the outer wing plate. This allows the outer wing plate to be fitted onto the outside of the central bearing block via threaded engagement, thus transforming the traditional one-piece pallet into a separate, detachable pallet. Traditional pallets use a one-piece structure with fixed dimensions and shape. This results in poor applicability in wide tunnels, irregularly shaped tunnels, or areas requiring dense support, often necessitating redesign and production of new pallets. This process is not only time-consuming but also costly, significantly reducing construction efficiency. Furthermore, these pallets are large and occupy considerable space, making transportation and handling difficult in narrow underground tunnels, and requiring substantial storage space. Additionally, localized damage to traditional pallets (such as severe deformation or tearing of a corner) often renders the entire pallet unusable, requiring replacement and resulting in significant material waste. Moreover, to meet the most demanding working conditions, the entire pallet is typically made of uniformly high-specification materials, leading to material waste under normal working conditions. This utility model adopts a split, detachable structure. Through threaded connections, reliable connections are ensured. Furthermore, different outer diameters, thicknesses, bearing areas, shapes, and materials of the outer wing plates can be selected and assembled according to different working conditions to better adapt to the requirements of different roadway cross-sections and surrounding rock support strengths, achieving a flexible combination of a single basic system for multiple applications. Simultaneously, this pallet can be disassembled for transportation and storage, greatly saving space occupied during transportation and warehousing. The same space can transport and store a greater number of pallets, significantly reducing logistics and labor costs. In addition, this pallet can adopt a "replace what's damaged" approach; typically, only the outer wing plates need to be replaced, while the central load-bearing block can be reused multiple times, greatly reducing subsequent maintenance costs and material consumption. Moreover, this pallet can implement a comprehensive material strategy. The central load-bearing block, typically using high-strength materials based on maximum stress, can be used, while the outer wing plates, depending on their location, applicable working conditions, and actual potential stress, can be made of slightly lower-strength, more economical materials, achieving optimal configuration of overall performance and cost.

[0034] The pallet has a simple structure, is flexible in assembly, easy to transport and store, provides ideal support, and can adapt to different working conditions and support requirements. It can quickly complete the assembly, installation and adjustment process on site, which greatly improves the construction efficiency of support operations and reduces construction costs.

Claims

1. A modular, combined high-strength anchor bolt tray, comprising a central bearing block (1), characterized in that, It also includes the outer wing plate 1 (2); The outer contour of the central bearing block (1) is circular, with a central through hole (3) in the center and an external thread structure (4) on its outer circular surface. The outer wing plate (2) has an internal threaded hole (5) in its central area. The inner diameter of the internal threaded hole (5) is adapted to the outer diameter of the central bearing block (1). The outer wing plate (2) is fixedly fitted on the outside of the central bearing block (1) through the threaded fit between the internal threaded hole (5) and the external threaded structure (4).

2. The modular combined high-strength anchor bolt tray according to claim 1, characterized in that, The top of the central bearing block (1) is a small planar structure (6), and the bottom is a large planar structure (7). The outer diameter of the part between the small planar structure (6) and the large planar structure (7) gradually increases from the top to the bottom, and at the same time, it is arc-shaped and bulging. The central through hole (3) is located in the central area of ​​the small planar structure (6).

3. A modular combined high-strength anchor bolt tray according to claim 1 or 2, characterized in that, The outer contour of the outer wing plate (2) is rectangular or butterfly-shaped.

4. A modular combined high-strength anchor bolt tray according to claim 1 or 2, characterized in that, The outer contour of the outer wing plate (2) is circular, and the outer circular surface is provided with an external thread structure (8).

5. A modular combined high-strength anchor bolt tray according to claim 4, characterized in that, It also includes an outer wing plate two (9), the central area of ​​which is provided with an internal thread hole two (10), the inner diameter of the internal thread hole two (10) is adapted to the outer diameter of the outer wing plate one (2), and the internal thread hole two (10) is adapted to the external thread structure two (8); the outer wing plate two (9) is fixedly fitted on the outside of the outer wing plate one (2) through the threaded fit between the internal thread hole two (10) and the external thread structure two (8).

6. A modular combined high-strength anchor bolt tray according to claim 2, characterized in that, The surface of the small planar structure (6) is provided with anti-slip texture.

7. A modular, combined high-strength anchor bolt tray according to claim 5, characterized in that, The outer circular surface of the outer wing plate two (9) is provided with an external thread structure three (11).

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