Large-section open-off cut self-adaptive supporting device based on composite anchor rod

Abstract

The utility model provides a large-section open-off cut self-adaptive supporting device based on composite anchor rods, which relates to the technical field of open-off cut supporting of coal mines and comprises a first supporting plate, a second supporting plate, a vertical plate, a first supporting frame, a top plate, a first supporting column, a cavity, a height adjusting assembly and a fixing assembly. A motor drives a rotating shaft and a first bevel gear to rotate, the first bevel gear rotates to drive a second bevel gear and a rotating rod to rotate so as to drive a threaded rod to rotate, and the threaded rod rotates to drive a second supporting column to move in the axis direction of the threaded rod so as to drive a top plate to move up and down; the height of the top plate can be conveniently adjusted to adapt to open-off cut roadways of different heights, and the problem that in the prior art, a supporting device with the fixed height cannot be adjusted according to the actual situation, and therefore certain limitation exists is solved.

Description

Technical Field

[0001] This utility model relates to the field of coal mine cut-out support technology, and in particular to a large-section cut-out adaptive support device based on composite material anchor bolts. Background Technology

[0002] In coal mining, "cutting the face" is a technical term referring to creating an initial channel in the coal seam for subsequent mining operations. This process is a crucial step in the preparation phase of coal mining. The main purpose of cutting the face is to establish a working face for installing mining equipment and carrying out subsequent mining operations.

[0003] During the tunnel excavation process, a series of support operations are carried out simultaneously to ensure the stability and safety of the tunnel. These support measures are crucial for ensuring the safety of personnel and equipment. Specifically, support operations typically include the use of support devices such as bolts and supports to prevent tunnel collapse.

[0004] Some existing fixed-height support systems often perform poorly in use due to design limitations. For example, if the support system cannot be adjusted according to the actual situation, it may lead to instability at the top of the roadway, increasing the risk of roof collapse and seriously threatening the lives of miners. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects of the existing technology. This utility model proposes a large-section open-cut adaptive support device based on composite material anchor bolts. By using this device, the problem that the fixed-height support device in the existing technology cannot be adjusted according to the actual situation, thus having certain limitations is solved.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a large-section open-cut adaptive support device based on composite material anchor bolts, including a first support plate and a second support plate. A vertical plate and a first support frame are fixedly connected to the top of the first support plate. A top plate is provided above the first support frame. A first support column is fixedly connected to the top of the second support plate. A cavity is provided inside the first support column. A height adjustment component is provided inside the cavity. A fixing component is provided on the outer surface of the vertical plate.

[0007] The height adjustment assembly includes a mounting bracket fixedly connected to the top of the second support plate, a motor fixedly connected to the top of the mounting bracket, a rotating shaft fixedly connected to the output end of the motor, a first bevel gear fixedly connected to the outer surface of the rotating shaft, a second bevel gear meshing with one side of the first bevel gear, a rotating rod fixedly connected to the inside of the second bevel gear, a threaded rod fixedly connected to the top of the rotating rod, and a second support column threadedly connected to the outer surface of the threaded rod, the top of the second support column being fixedly connected to the bottom of the top plate.

[0008] Furthermore, a through groove is provided at the top of the first support column, which is connected to the cavity. The second support column moves through the through groove, and the rotating shaft rotates through the cavity. One end of the rotating rod is rotatably connected to the bottom of the inner wall of the cavity.

[0009] Furthermore, a groove is provided at the top of the first support frame, and a second support frame is slidably connected to the inner wall of the groove. The top of the second support frame is fixedly connected to the bottom of the top plate.

[0010] Furthermore, the fixing assembly includes a hollow anchor rod penetrating the vertical plate, a first cone portion disposed at one end of the hollow anchor rod, a push rod slidably connected inside the hollow anchor rod, a groove formed on the outer surface of the hollow anchor rod, a hollow fixing rod slidably connected inside the groove, and a second cone portion fixedly connected to one end of the groove.

[0011] Furthermore, a limit block is fixedly connected to the outer surface of the hollow fixing rod, and an inclined surface is provided at one end of the hollow fixing rod.

[0012] Furthermore, a first grouting hole is provided on the outer surface of the hollow anchor rod, and a second grouting hole is provided on the outer surface of the hollow fixing rod. The hollow anchor rod is a component made of glass fiber reinforced plastic.

[0013] Compared with the prior art, the beneficial effects of this utility model include: the motor drives the rotating shaft and the first bevel gear to rotate, the rotation of the first bevel gear drives the second bevel gear and the rotating rod to rotate, thereby driving the threaded rod to rotate, and the rotation of the threaded rod drives the second support column to move along the axis of the threaded rod, thereby driving the roof plate to move up and down, which makes it easier to adjust the height of the roof plate to adapt to cut-in roadways of different heights, and solves the problem that the fixed-height support device in the prior art cannot be adjusted according to the actual situation, thus having certain limitations. Attached Figure Description

[0014] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0015] Figure 1 The schematic diagram shows the overall structure of the large-section open-cut adaptive support device based on composite material anchor bolts according to one embodiment of the present invention.

[0016] Figure 2 The schematic diagram illustrates the fixing component structure of a large-section open-cut adaptive support device based on composite material anchor bolts according to one embodiment of the present invention. Figure 1 ;

[0017] Figure 3The schematic diagram illustrates the fixing component structure of a large-section open-cut adaptive support device based on composite material anchor bolts according to one embodiment of the present invention. Figure 2 ;

[0018] Figure 4 The schematic diagram shows the cavity and height adjustment component structure of the large-section open-cut adaptive support device based on composite material anchor bolts according to one embodiment of the present invention.

[0019] Figure 5 The schematic diagram shows the first and second support columns of the large-section open-cut adaptive support device based on composite material anchor bolts according to one embodiment of the present invention.

[0020] Figure 6 The diagram schematically shows the first and second support frames of the adaptive support device with large cross-section open-cut holes based on composite material anchor bolts according to one embodiment of the present invention.

[0021] Labels in the diagram: 1. First support plate; 11. Vertical plate; 12. First support frame; 121. Groove; 2. Fixing component; 21. Hollow anchor rod; 211. First grouting hole; 212. Slide groove; 22. Push rod; 23. First cone; 24. Hollow fixing rod; 241. Limiting block; 242. Inclined surface; 243. Second grouting hole; 25. Second cone; 3. Second support plate; 31. First support column; 311. Cavity; 312. Through groove; 4. Height adjustment component; 41. Mounting frame; 42. Motor; 43. Rotating shaft; 44. First bevel gear; 45. Second bevel gear; 451. Rotating rod; 46. Threaded rod; 47. Second support column; 5. Top plate; 6. Second support frame. Detailed Implementation

[0022] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0023] According to one embodiment of the present invention, in conjunction with Figures 1-6The diagram shows a large-section open-cut adaptive support device based on composite material anchor bolts, including a first support plate 1 and a second support plate 3. The top of the first support plate 1 is fixedly connected to a vertical plate 11 and a first support frame 12. A top plate 5 is provided above the first support frame 12. The top of the second support plate 3 is fixedly connected to a first support column 31. A cavity 311 is provided inside the first support column 31. A height adjustment component 4 is provided inside the cavity 311. A fixing component 2 is provided on the outer surface of the vertical plate 11.

[0024] In this embodiment, the height adjustment component 4 includes a mounting bracket 41 fixedly connected to the top of the second support plate 3, a motor 42 fixedly connected to the top of the mounting bracket 41, a rotating shaft 43 fixedly connected to the output end of the motor 42, a first bevel gear 44 fixedly connected to the outer surface of the rotating shaft 43, a second bevel gear 45 meshing with one side of the first bevel gear 44, a rotating rod 451 fixedly connected inside the second bevel gear 45, a threaded rod 46 fixedly connected to the top of the rotating rod 451, and a second support column 47 threadedly connected to the outer surface of the threaded rod 46. The top of the second support column 47 is fixedly connected to the bottom of the top plate 5. The motor 42 drives the rotating shaft 43 and the first bevel gear 44 to rotate. The rotation of the first bevel gear 44 drives the second bevel gear 45 and the rotating rod 451 to rotate, thereby driving the threaded rod 46 to rotate. The rotation of the threaded rod 46 drives the second support column 47 to move along the axis of the threaded rod 46, thereby driving the top plate 5 to move up and down, so as to adjust the height of the top plate 5 to adapt to cut-in tunnels of different heights.

[0025] The first support column 31 has a through groove 312 at its top, which is connected to the cavity 311. The second support column 47 moves through the through groove 312, and the rotating shaft 43 rotates through the cavity 311. One end of the rotating rod 451 is rotatably connected to the bottom of the inner wall of the cavity 311. The through groove 312 provides a path for the first support column 31 to move smoothly up and down along the axis of the threaded rod 46.

[0026] The top of the first support frame 12 has a groove 121, and the inner wall of the groove 121 is slidably connected to the second support frame 6. The top of the second support frame 6 is fixedly connected to the bottom of the top plate 5. When the threaded rod 46 rotates, it drives the second support column 47 to move along the axis of the threaded rod 46, and the top plate 5 moves up and down accordingly. At this time, the second support frame 6 will also slide along the inner wall of the groove 121, providing guidance for the movement of the top plate 5 and ensuring that the top plate 5 is more stable when adjusting its height.

[0027] The fixing assembly 2 includes a hollow anchor rod 21 penetrating the vertical plate 11, a first cone portion 23 disposed at one end of the hollow anchor rod 21, a push rod 22 slidably connected inside the hollow anchor rod 21, a groove 212 formed on the outer surface of the hollow anchor rod 21, a hollow fixing rod 24 slidably connected inside the groove 212, and a second cone portion 25 fixedly connected to one end of the groove 212. The push rod 22 is inserted into the hollow anchor rod 21, and by pushing the push rod 22, the hollow fixing rod 24 slides outward along the groove 212. The sliding out of the hollow fixing rod 24 increases the lateral fixing area of ​​the hollow anchor rod 21, further expanding the anchoring range. The groove 212 provides a guide path for the hollow fixing rod 24.

[0028] A limiting block 241 is fixedly connected to the outer surface of the hollow fixing rod 24, and an inclined surface 242 is provided at one end of the hollow fixing rod 24. When the push rod 22 is inserted into the hollow anchor rod 21 and pushes the hollow fixing rod 24, the inclined surface 242 facilitates the guidance of the force of the push rod 22, thereby pushing the push rod 22 out more smoothly. The limiting block 241 facilitates the restriction of the sliding range of the hollow fixing rod 24, preventing it from overextending or disengaging from the slide groove 212.

[0029] The hollow anchor rod 21 has a first grouting hole 211 on its outer surface, and the hollow fixing rod 24 has a second grouting hole 243 on its outer surface. The hollow anchor rod 21 is a component made of glass fiber reinforced plastic. Glass fiber reinforced plastic has extremely high tensile strength, making it easy to withstand large axial tensile forces and meeting the strength requirements during support. The first grouting hole 211 is located on the outer surface of the hollow anchor rod 21 and is used to inject grout into the interior of the hollow anchor rod 21 and the surrounding rock mass. The second grouting hole 243 is located on the outer surface of the hollow fixing rod 24 and is used to inject grout into the larger area of ​​rock mass formed after the hollow fixing rod 24 is unfolded, thereby enhancing the anchoring force and support effect of the hollow anchor rod 21.

[0030] In use, the push rod 22 is inserted into the hollow anchor rod 21, and the hollow fixing rod 24 is slid outward along the groove 212 by pushing the push rod 22. The sliding out of the hollow fixing rod 24 increases the lateral fixing area of ​​the hollow anchor rod 21, further expanding the anchoring range. The groove 212 provides a guide path for the hollow fixing rod 24. The first grouting hole 211 is located on the outer surface of the hollow anchor rod 21 and is used to inject grout into the interior of the hollow anchor rod 21 and the surrounding rock mass. The second grouting hole 243 is located on the outer surface of the hollow fixing rod 24 and is used to inject grout into the larger area of ​​rock mass formed after the hollow fixing rod 24 is unfolded, increasing the anchoring range. The hollow anchor bolt 21 has been strengthened in terms of anchoring force and support effect. The motor 42 drives the rotating shaft 43 and the first bevel gear 44 to rotate. The rotation of the first bevel gear 44 drives the second bevel gear 45 and the rotating rod 451 to rotate, which in turn drives the threaded rod 46 to rotate. The rotation of the threaded rod 46 drives the second support column 47 to move along the axis of the threaded rod 46, thereby driving the roof plate 5 to move up and down. This makes it easier to adjust the height of the roof plate 5 to adapt to cut-in roadways of different heights. At this time, the second support frame 6 will also slide along the inner wall of the groove 121 to provide guidance for the movement of the roof plate 5 and ensure that the roof plate 5 is more stable when adjusting its height.

[0031] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A large-section open-cut adaptive support device based on composite material anchor bolts, characterized in that: It includes a first support plate and a second support plate. The top of the first support plate is fixedly connected to a vertical plate and a first support frame. A top plate is provided above the first support frame. The top of the second support plate is fixedly connected to a first support column. A cavity is provided inside the first support column. A height adjustment component is provided inside the cavity. A fixing component is provided on the outer surface of the vertical plate. The height adjustment assembly includes a mounting bracket fixedly connected to the top of the second support plate, a motor fixedly connected to the top of the mounting bracket, a rotating shaft fixedly connected to the output end of the motor, a first bevel gear fixedly connected to the outer surface of the rotating shaft, a second bevel gear meshing with one side of the first bevel gear, a rotating rod fixedly connected inside the second bevel gear, a threaded rod fixedly connected to the top of the rotating rod, and a second support column threadedly connected to the outer surface of the threaded rod, the top of the second support column being fixedly connected to the bottom end of the top plate.

2. The large-section open-cut adaptive support device based on composite material anchor bolts according to claim 1, characterized in that: The first support column has a through groove at its top end, which is connected to the cavity. The second support column moves through the through groove, the rotating shaft rotates through the cavity, and one end of the rotating rod is rotatably connected to the bottom end of the inner wall of the cavity.

3. The large-section open-cut adaptive support device based on composite material anchor bolts according to claim 1, characterized in that: The first support frame has a groove at its top, and a second support frame is slidably connected to the inner wall of the groove. The top of the second support frame is fixedly connected to the bottom of the top plate.

4. The large-section open-hole adaptive support device based on composite material anchor bolts according to claim 3, characterized in that: The fixing assembly includes a hollow anchor rod penetrating the vertical plate, a first cone portion disposed at one end of the hollow anchor rod, a push rod slidably connected inside the hollow anchor rod, a groove formed on the outer surface of the hollow anchor rod, a hollow fixing rod slidably connected inside the groove, and a second cone portion fixedly connected to one end of the groove.

5. The large-section open-cut adaptive support device based on composite material anchor bolts according to claim 4, characterized in that: A limit block is fixedly connected to the outer surface of the hollow fixing rod, and an inclined surface is provided at one end of the hollow fixing rod.

6. The large-section open-cut adaptive support device based on composite material anchor bolts according to claim 5, characterized in that: The hollow anchor rod has a first grouting hole on its outer surface, and the hollow fixing rod has a second grouting hole on its outer surface. The hollow anchor rod is a component made of glass fiber reinforced plastic.

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