Structure for preventing anchor rod supporting plate from cutting off steel mesh

Abstract

The utility model provides a structure for preventing an anchor rod supporting plate from cutting off a steel mesh, which relates to the technical field of soft rock roadway support and comprises a protective plate and a disc-shaped supporting plate, the disc-shaped supporting plate is arranged in the middle of the top of the protective plate, the middle ends of the protective plate and the disc-shaped supporting plate are used for penetrating through the exposed end of an anchor rod, a nut is arranged above the disc-shaped supporting plate, and the nut is connected with the protective plate. The nut is used for fixing the exposed end of the anchor rod through threads; first arched cavities are formed in the two sides of the protective plate; the protecting plate and the disc-shaped supporting plate are installed at the exposed end of the anchor rod and fixed through the nuts, the protecting plate is supported between the disc-shaped supporting plate and the supporting top side, through the arc-shaped lead angle modeling of the first arch-shaped cavity and the second arch-shaped cavity and the arc-shaped modeling of the supporting edge inclining upwards, the contact pressure between the protecting plate and a reinforcing mesh is reduced, a steel mesh is prevented from being cut off, and meanwhile the protecting plate is prevented from being damaged. The overall strength of the protection plate is improved through the first arch-shaped cavity and the second arch-shaped cavity, and the protection plate is not prone to deformation after being subjected to supporting pressure of the disc-shaped supporting plate for a long time and is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of soft rock tunnel support, in particular to a structure for preventing an anchor rod supporting plate from shearing a steel mesh. Background Art

[0002] The Jurassic weakly cemented mudstone is characterized by low original rock strength. During underground coal mining, tunnels of this texture are easily compressed and deformed, requiring support anchors. During the support process, anchor plates need to be installed at the exposed ends of the anchors. In order to increase the force of the anchor plates, dish-shaped plates are usually used. Compared with other shapes of trays (such as flat trays), dish-shaped trays have better load-bearing effects. This is mainly due to their unique shape design, which enables the trays to more effectively disperse pressure when subjected to force, thereby improving the overall stability of the support system.

[0003] During support, the anchor support plate is subjected to force to squeeze the steel mesh laid on the coal wall. Due to the structure of the dish-shaped support plate, the bottom edge is sharp, and there is a problem of shearing the steel mesh, which leads to weakening of the tunnel support strength, falling slag and injuring people, and brings serious difficulties to the safe and efficient development of the mine. For this reason, some existing technologies add a flat plate between the dish-shaped support plate and the support top. Due to its flat characteristics, it is easy to deform after being subjected to force, affecting the support effect. Therefore, the utility model proposes a structure to prevent the anchor support plate from shearing the steel mesh to solve the problems existing in the existing technology. Utility Model Content

[0004] In response to the above problems, the utility model proposes a structure for preventing the anchor rod support plate from shearing the steel mesh. The structure for preventing the anchor rod support plate from shearing the steel mesh installs a guard plate and a dish-shaped support plate to the exposed end of the anchor rod and fixes them with nuts. The guard plate is supported between the dish-shaped support plate and the support top. Through the arc-shaped guide angle shape of the first arch cavity and the second arch cavity, and the upward-inclined arc shape of the support edge, the contact pressure with the steel mesh is reduced, thereby avoiding shearing of the steel mesh.

[0005] To achieve the purpose of the utility model, the utility model is implemented through the following technical solutions: a structure for preventing an anchor support plate from shearing a steel mesh, comprising a guard plate and a dish-shaped support plate, wherein the dish-shaped support plate is arranged at the middle position of the top of the guard plate, and the middle ends of the guard plate and the dish-shaped support plate are used to penetrate the exposed end of the anchor rod, and a nut is provided above the dish-shaped support plate, and the nut is used to threadably fix the exposed end of the anchor rod;

[0006] First arched cavities are provided on both sides of the guard plate, and second arched cavities are provided on the guard plate at both ends between the two groups of the first arched cavities. Support edges are provided on the outer sides of the two groups of the first arched cavities, and the support edges are inclined upward.

[0007] A further improvement is that a glass fiber reinforcement cloth is provided at the bottom of the guard plate, and the glass fiber reinforcement cloth is bonded and fixed to the guard plate.

[0008] A further improvement is that a first through hole is provided at the middle position of the guard plate, a second through hole is provided at the middle position of the disc-shaped support plate, and the exposed end of the anchor rod passes through the first through hole, the second through hole and is fixed to the nut.

[0009] A further improvement is that: anti-slip protrusions are provided on the dish-shaped supporting plate around the second through hole, and there are multiple groups of anti-slip protrusions, and the nut is pressed on the anti-slip protrusions.

[0010] A further improvement is that the bottom surface of the guard plate is a smooth surface, and the outer side of the supporting edge is covered with rubber.

[0011] Further improvements are: first side blocks are provided on both sides of one end of the top of the guard plate, and a splicing groove is provided inside the first side block, second side blocks are provided on both sides of one end of the top of the guard plate away from the first side block, and a splicing rod is provided on the second side block, and the splicing rod is adapted to the splicing groove.

[0012] The beneficial effects of the utility model are:

[0013] 1. The utility model installs the guard plate and the dish-shaped support plate to the exposed end of the anchor rod and fixes them with nuts. The guard plate is supported between the dish-shaped support plate and the support top. The arc-shaped guide angle shape of the first arch cavity and the second arch cavity, as well as the upward inclined arc shape of the supporting edge, reduces the contact pressure with the steel mesh and avoids shearing of the steel mesh. At the same time, the overall strength of the guard plate is improved by the first arch cavity and the second arch cavity. It is not easy to deform after being supported by the dish-shaped support plate for a long time and is more stable.

[0014] 2. A glass fiber reinforced cloth is added under the guard plate of the utility model to provide soft protection to prevent debris from falling and injuring people. The nut on the top is fixed to the disc-shaped support plate through an anti-slip protrusion to enhance friction and prevent loosening.

[0015] 3. Since the splicing rods and the splicing grooves are compatible with each other, multiple sets of guard plates can be spliced ​​together to meet the continuous support requirements and have diversified functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the main view of the utility model;

[0017] Figure 2 A schematic diagram of a guard plate of the present utility model;

[0018] Figure 3 This is a schematic diagram of a dish-shaped support plate of the present utility model.

[0019] Among them: 1. Guard plate; 2. Disc-shaped support plate; 3. Exposed end of anchor rod; 4. Nut; 5. First arch cavity; 6. Second arch cavity; 7. Support edge; 8. Glass fiber reinforced cloth; 9. First through hole; 10. Second through hole; 11. Anti-slip protrusion; 12. First side block; 13. Splicing groove; 14. Second side block; 15. Splicing rod. DETAILED DESCRIPTION

[0020] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments. The embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0021] Example 1

[0022] according to Figure 1 、 2 As shown in Figure 3, this embodiment proposes a structure for preventing the anchor support plate from shearing the steel mesh, comprising a guard plate 1 and a dish-shaped support plate 2. The dish-shaped support plate 2 is provided at the middle position of the top of the guard plate 1, and the middle ends of the guard plate 1 and the dish-shaped support plate 2 are used to penetrate the exposed end 3 of the anchor rod. A nut 4 is provided above the dish-shaped support plate 2, and the nut 4 is used to threadably fix the exposed end 3 of the anchor rod.

[0023] A first arched cavity 5 is provided on both sides of the guard plate 1, and a second arched cavity 6 is provided on the guard plate 1 at both ends between the two groups of the first arched cavities 5. A support edge 7 is provided on the outside of the two groups of the first arched cavities 5, and the support edge 7 is tilted upward. When in use, the guard plate 1 and the disc-shaped support plate 2 are installed on the exposed end 3 of the anchor rod and fixed by the nut 4. The guard plate 1 is supported between the disc-shaped support plate 2 and the top support. The arc-shaped guide angle shape of the first arched cavity 5 and the second arched cavity 6, as well as the arc shape of the support edge 7 tilted upward, reduce the contact pressure with the steel mesh and avoid cutting the steel mesh. At the same time, the first arched cavity 5 and the second arched cavity 6 enhance the overall strength of the guard plate 1. After being supported by the disc-shaped support plate 2 for a long time, it is not easy to deform and is more stable. It is used in the later soft rock tunnel support design to improve the compressive strength of the tunnel surrounding rock and greatly reduce the tunnel repair rate.

[0024] The bottom of the guard plate 1 is provided with a glass fiber reinforced cloth 8, and the glass fiber reinforced cloth 8 is bonded and fixed to the guard plate 1. The glass fiber reinforced cloth 8 is added below the guard plate 1 to provide soft protection to prevent debris from falling and injuring people.

[0025] A first through hole 9 is provided at a middle position on the guard plate 1, and a second through hole 10 is provided at a middle position on the dish-shaped support plate 2. The exposed end 3 of the anchor rod passes through the first through hole 9 and the second through hole 10 and is fixed with a nut 4. When in use, the guard plate 1 and the dish-shaped support plate 2 are mounted on the exposed end 3 of the anchor rod, and the exposed end 3 of the anchor rod passes through the first through hole 9 and the second through hole 10 and is fixed with a nut 4. The guard plate 1 is supported between the dish-shaped support plate 2 and the supporting top.

[0026] The disc-shaped support plate 2 is provided with anti-slip protrusions 11 around the second through hole 10, and there are multiple groups of anti-slip protrusions 11, and the nut 4 is pressed on the anti-slip protrusions 11. The nut 4 is fixed to the disc-shaped support plate 2 by the anti-slip protrusions 11, which enhances friction and prevents loosening.

[0027] The bottom surface of the guard plate 1 is smooth, and the outer side of the support edge 7 is covered with rubber. When in use, the guard plate 1 and the dish-shaped support plate 2 are installed on the exposed end 3 of the anchor rod and fixed with the nut 4. The guard plate 1 is supported between the dish-shaped support plate 2 and the support top. The arc-shaped guide angles of the first arched cavity 5 and the second arched cavity 6, as well as the upward-angled arc shape of the support edge 7, combined with the soft contact of the rubber, reduce the contact pressure with the steel mesh and avoid shearing the steel mesh.

[0028] Example 2

[0029] according to Figure 1 、 2 As shown in Figure 3, this embodiment proposes a structure for preventing the anchor support plate from shearing the steel mesh, comprising a guard plate 1 and a dish-shaped support plate 2. The dish-shaped support plate 2 is provided at the middle position of the top of the guard plate 1, and the middle ends of the guard plate 1 and the dish-shaped support plate 2 are used to penetrate the exposed end 3 of the anchor rod. A nut 4 is provided above the dish-shaped support plate 2, and the nut 4 is used to threadably fix the exposed end 3 of the anchor rod.

[0030] A first arched cavity 5 is provided on both sides of the guard plate 1, and a second arched cavity 6 is provided on the guard plate 1 at both ends between the two groups of the first arched cavities 5. A support edge 7 is provided on the outside of the two groups of the first arched cavities 5, and the support edge 7 is tilted upward. When in use, the guard plate 1 and the disc-shaped support plate 2 are installed on the exposed end 3 of the anchor rod and fixed by the nut 4. The guard plate 1 is supported between the disc-shaped support plate 2 and the top support. The arc-shaped guide angle shape of the first arched cavity 5 and the second arched cavity 6, as well as the arc shape of the support edge 7 tilted upward, reduce the contact pressure with the steel mesh and avoid cutting the steel mesh. At the same time, the first arched cavity 5 and the second arched cavity 6 enhance the overall strength of the guard plate 1. After being supported by the disc-shaped support plate 2 for a long time, it is not easy to deform and is more stable. It is used in the later soft rock tunnel support design to improve the compressive strength of the tunnel surrounding rock and greatly reduce the tunnel repair rate.

[0031] The bottom of the guard plate 1 is provided with a glass fiber reinforced cloth 8, and the glass fiber reinforced cloth 8 is bonded and fixed to the guard plate 1. The glass fiber reinforced cloth 8 is added below the guard plate 1 to provide soft protection to prevent debris from falling and injuring people.

[0032] A first side block 12 is provided on both sides of one end of the top of the guard plate 1, and a splicing groove 13 is provided inside the first side block 12. A second side block 14 is provided on both sides of the end of the top of the guard plate 1 away from the first side block 12, and a splicing rod 15 is provided on the second side block 14. The splicing rod 15 is adapted to the splicing groove 13. Because the splicing rod 15 is adapted to the splicing groove 13, multiple groups of guard plates 1 can be spliced ​​together, thereby meeting the requirements of continuous support and achieving diversified functions.

[0033] The structure for preventing the anchor support plate from shearing the steel mesh installs the guard plate 1 and the dish-shaped support plate 2 to the exposed end 3 of the anchor rod and fixes them with the nut 4. The guard plate 1 is supported between the dish-shaped support plate 2 and the top support. The arc-shaped guide angle shape of the first arch cavity 5 and the second arch cavity 6, as well as the upward arc shape of the support edge 7, reduces the contact pressure with the steel mesh to avoid shearing the steel mesh. At the same time, the first arch cavity 5 and the second arch cavity 6 improve the overall strength of the guard plate 1. After being supported by the dish-shaped support plate 2 for a long time, it is not easy to deform and is more stable. In addition, a glass fiber reinforced cloth 8 is added to the bottom of the guard plate 1 to provide soft protection to prevent debris from falling and injuring people. The upper nut 4 is fixed to the dish-shaped support plate 2 by the anti-slip protrusion 11 to enhance friction and prevent loosening. Finally, because the splicing rod 15 is compatible with the splicing groove 13, multiple groups of guard plates 1 can be spliced ​​with each other, thereby meeting the continuous support requirements and having diversified functions.

[0034] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A structure for preventing an anchor support plate from shearing a steel mesh, comprising a guard plate (1) and a dish-shaped support plate (2), characterized in that: The disc-shaped support plate (2) is arranged at the middle position of the top of the guard plate (1), and the middle ends of the guard plate (1) and the disc-shaped support plate (2) are used to penetrate the exposed end (3) of the anchor rod. A nut (4) is provided above the disc-shaped support plate (2), and the nut (4) is used to threadably fix the exposed end (3) of the anchor rod. First arched cavities (5) are provided on both sides of the guard plate (1), and second arched cavities (6) are provided on the guard plate (1) at both end positions between the two groups of the first arched cavities (5). Support edges (7) are provided on the outer sides of the two groups of the first arched cavities (5), and the support edges (7) are inclined upward.

2. The structure for preventing the anchor support plate from shearing the steel mesh according to claim 1, characterized in that: A glass fiber reinforcement cloth (8) is provided at the bottom of the guard plate (1), and the glass fiber reinforcement cloth (8) is bonded and fixed to the guard plate (1).

3. The structure for preventing the anchor support plate from shearing the steel mesh according to claim 1, characterized in that: A first through hole (9) is provided at the middle position of the guard plate (1), a second through hole (10) is provided at the middle position of the disc-shaped support plate (2), and the exposed end (3) of the anchor rod passes through the first through hole (9), the second through hole (10) and the nut (4) to be fixed.

4. The structure for preventing the anchor support plate from shearing the steel mesh according to claim 3, characterized in that: The disc-shaped support plate (2) is provided with anti-slip protrusions (11) around the second through hole (10), and the anti-slip protrusions (11) are provided in multiple groups, and the nut (4) is pressed on the anti-slip protrusions (11).

5. The structure for preventing the anchor support plate from shearing the steel mesh according to claim 1 is characterized in that: The bottom surface of the guard plate (1) is a smooth surface, and the outer side of the supporting edge (7) is covered with rubber.

6. A structure for preventing an anchor support plate from shearing a steel mesh according to any one of claims 1 to 5, characterized in that: A first side block (12) is provided on both sides of one end of the top of the guard plate (1), and a splicing groove (13) is provided inside the first side block (12). A second side block (14) is provided on both sides of one end of the top of the guard plate (1) away from the first side block (12), and a splicing rod (15) is provided on the second side block (14), and the splicing rod (15) is adapted to the splicing groove (13).

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