A coal mine roadway supporting anchor net fixing device

Abstract

The utility model relates to fixed device technical field, concretely is a kind of coal mine roadway support anchor net fixing device, including embedded frame, waterproof assembly is arranged in the embedded frame;The waterproof assembly includes the recess that is opened in the embedded frame inner wall side, fixed cylinder is arranged in the recess, waterproof groove is opened in the recess inner wall side, filling layer that is adapted with the waterproof groove is arranged between the fixed cylinder and embedded frame, the filling layer is set with polyurethane waterproof sealant, the surface of the filling layer is coated with cement-based penetration crystalline waterproof paint, anchor rod is arranged in the fixed cylinder, reinforcing connection component is arranged in the anchor rod.In the utility model, through the setting of waterproof assembly, the anchor rod is protected, and the setting of filling layer reacts expansion when encountering water, forms elastic colloid, and blocks water flow, avoids the influence of water flow on anchor rod installation stability, and further limiting fixing is carried out to anchor rod through the setting of reinforcing connection component.

Description

Technical Field

[0001] This utility model relates to the field of fixing device technology, and in particular to a fixing device for coal mine roadway support anchor net. Background Technology

[0002] Anchor mesh technology refers to the technique of connecting multiple metal wires in a crisscross pattern to an anchor rod, so that the wires cross to form a mesh, which then adheres to the surface of the medium that needs protection, blocking particulate matter from the medium itself, thereby reducing the harm caused to people below by falling particles.

[0003] An existing coal mine roadway support anchor net fixing device, with announcement number CN218716892U, includes a coal mine surface, a mine wall, and anchor net mounting blocks. A mine wall is installed on the sidewall of the coal mine surface. Multiple sets of anchor net mounting blocks are installed on the sidewall of the mine wall. Multiple mounting grooves are formed in the middle of the multiple sets of anchor net mounting blocks. The clamping effect of limiting blocks and locking blocks on the mine wall and anchor net mounting blocks increases the fixation of the multiple sets of anchor net mounting blocks on the sidewall of the mine wall, reduces the stability of the anchor net mounting blocks when rocks fall on the sidewall of the mine wall, and increases the stability of the first sliding block inside the anchor net mounting block by providing multiple sets of locking blocks, thereby increasing the support of the multiple sets of anchor net mounting blocks for the mine wall and reducing the possibility of mine wall collapse.

[0004] Regarding the aforementioned technologies, the existing fixing devices have the following drawbacks: water seepage or splashing on the mine wall can soften the surrounding rock, reducing the adhesion between the anchor rod and the borehole wall. The anchor mesh may fall off due to insufficient anchoring force after fixing, especially when cement mortar is used for anchoring, as water will dilute the mortar and weaken its strength. Therefore, this utility model provides a coal mine roadway support anchor mesh fixing device. Utility Model Content

[0005] The purpose of this application is to provide a coal mine roadway support anchor net fixing device to solve the problem mentioned in the background art that water seepage or sprinkling on the mine wall will soften the surrounding rock, reduce the adhesion between the anchor rod and the borehole wall, and the anchor net may fall off due to insufficient anchoring force after fixing, especially when cement mortar is used for anchoring, water will dilute the mortar and weaken its strength.

[0006] To achieve the above objectives, this application provides the following technical solution: a coal mine roadway support anchor fixing device, comprising an embedded frame, wherein a waterproof component is provided within the embedded frame; the waterproof component includes a groove formed on the inner wall side of the embedded frame, a fixing cylinder is provided within the groove, a waterproof groove is formed on the inner wall side of the groove, a filling layer adapted to the waterproof groove is provided between the fixing cylinder and the embedded frame, the filling layer is provided as a polyurethane waterproof sealant, the surface of the filling layer is coated with a cement-based penetrating crystalline waterproof coating, an anchor rod is provided within the fixing cylinder, and a reinforcing connection component is provided within the anchor rod.

[0007] Preferably, the reinforcing connection assembly includes a fixing plate fixedly connected to the inner wall side of the anchor rod, a rotating plate rotatably connected to the side of the fixing plate, a plurality of guide grooves being formed on the inner side of the rotating plate, a sliding rod being slidably connected in the guide grooves, and a limit block being fixedly connected to one end of the sliding rod.

[0008] Preferably, the outer side of the fixed plate is provided with a plurality of sliding grooves adapted to the sliding rod, a slider is fixedly connected to the outer side of the sliding rod, and a guide rail adapted to the slider is provided on the inner side of the sliding groove.

[0009] Preferably, the outer side of the anchor rod is provided with a plurality of insertion holes that are adapted to the limiting block, and one end of the anchor rod is fixedly connected to a plug.

[0010] Preferably, the outer side of the fixing cylinder is provided with a slot adapted to the anchor rod, the inner wall of the slot is provided with an internal thread, and the outer side of the anchor rod is provided with an external thread adapted to the internal thread.

[0011] Preferably, the anchor rod is threadedly connected to a screw rod on its inner side, and one end of the screw rod is fixedly connected to the rotating plate.

[0012] Preferably, a nut is provided on the outer side of the screw, and a rotating block is fixedly connected to one end of the screw.

[0013] In summary, the technical effects and advantages of this utility model are as follows:

[0014] In this invention, the anchor rod is protected by a waterproof component, and the filling layer expands upon contact with water to form an elastic colloid, blocking water flow and preventing water from affecting the stability of the anchor rod installation. Furthermore, the anchor rod is further secured by a reinforced connecting component. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a first-view axial side view of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the second-view axial side structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the insertion hole in this utility model;

[0019] Figure 4 This is a schematic diagram of the guide rail and slide groove in this utility model.

[0020] In the diagram: 1. Embedded frame; 2. Filling layer; 3. Fixing cylinder; 4. Anchor rod; 5. Nut; 6. Screw; 7. Rotating block; 8. Plug; 9. Waterproof groove; 10. Limiting block; 11. Fixing plate; 12. Rotating plate; 13. Guide groove; 14. Groove; 15. Insertion hole; 16. Sliding rod; 17. Sliding block; 18. Guide rail; 19. Slide groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Example 1: Reference Figure 1-4The diagram illustrates a coal mine roadway support anchor fixing device, comprising an embedded frame 1, within which a waterproof component is installed. The embedded frame 1 is used for stable installation at a predetermined position in the coal mine roadway, providing a foundation structure for subsequent components and ensuring the stability of the entire fixing device within the roadway. The waterproof component includes a groove 14 formed on the inner wall of the embedded frame 1, with internal threads on the inner wall of the groove 14 and external threads on the outer side of the fixing cylinder 3. The fixing cylinder 3 is installed within the groove 14, and the groove 14 and the fixing cylinder 3 are tightly connected through threaded engagement, facilitating installation and disassembly while providing a certain degree of waterproofing. A waterproof groove 9 is formed on the inner wall of the groove 14, and a filling layer 2 adapted to the waterproof groove 9 is provided between the fixing cylinder 3 and the embedded frame 1. The filling layer 2 is made of polyurethane waterproof sealant, which has good elasticity and sealing properties. When filled within the waterproof groove 9, it effectively fills gaps, preventing groundwater or humid gases in the roadway from seeping in, further enhancing the waterproofing effect. The surface of the filling layer 2 is coated with a cement-based penetrating crystalline waterproof coating. This coating can penetrate into the interior of the filling layer 2, react chemically with substrates such as concrete, form crystals to block capillary pores, providing long-lasting waterproofing and possessing self-healing capabilities, thus extending the service life of the waterproof components to a certain extent. Anchor rods 4 are installed inside the fixing cylinder 3. The fixing cylinder 3 positions and initially fixes the anchor rods 4, ensuring accurate installation in the predetermined position and enhancing the stability of the anchor rod installation. The anchor rod 4 is hollow inside, housing a reinforcing connection assembly. As the main load-bearing component, the hollow design of the anchor rod 4 ensures sufficient strength while reducing its weight, facilitating installation and transportation, and providing installation space for the reinforcing connection assembly. The reinforcing connection assembly includes a fixing plate 11 fixedly connected to the inner wall of the anchor rod 4. The fixing plate 11 supports and fixes components such as the rotating plate 12, ensuring the stability of the reinforcing connection assembly structure. A rotating plate 12 is rotatably connected to the side of the fixed plate 11. Multiple guide grooves 13 are provided on the inner side of the rotating plate 12. A sliding rod 16 is slidably connected within the guide grooves 13, and a limit block 10 is fixedly connected to one end of the sliding rod 16. Rotation of the rotating plate 12 causes the sliding rod 16 to slide within the guide grooves 13, thereby moving the limit block 10. This is used to adjust the position of the limit block 10, achieving the function of fastening and limiting the connection between the anchor rod 4 and other components. Multiple sliding grooves 19 adapted to the sliding rod 16 are provided on the outer side of the fixed plate 11. A slider 17 is fixedly connected to the outer side of the sliding rod 16, and a guide rail 18 adapted to the slider 17 is provided on the inner wall of the sliding groove 19. The cooperation of the slide groove 19, the slider 17 and the guide rail 18 provides a stable sliding track for the sliding rod 16, ensuring the smoothness and accuracy of the movement of the sliding rod 16, and enabling the limiting block 10 to reliably perform the limiting operation; the outer side of the anchor rod 4 is provided with multiple insertion holes 15 that are compatible with the limiting block 10, and one end of the anchor rod 4 is fixedly connected to a plug 8.The limiting block 10 is inserted into the socket 15 to firmly connect the rotating plate 12 to the anchor rod 4, thereby enhancing the integrity and stability of the internal structure of the anchor rod 4 and improving the load-bearing capacity of the anchor rod 4. The plug 8 is used to connect with the anchor mesh or other related components to realize the fixing effect of the anchor rod 4 on the anchor mesh and ensure the support function of the anchor mesh fixing device for coal mine roadway support.

[0024] Example 2: Reference Figure 1-4 Based on the same concept as in Embodiment 1 above, this embodiment further proposes that the outer side of the fixing cylinder 3 is provided with a slot adapted to the anchor rod 4, and the inner wall of the slot is provided with an internal thread. The outer side of the anchor rod 4 is provided with an external thread adapted to the internal thread. The fit between the slot and the thread allows the anchor rod 4 to be firmly screwed into the fixing cylinder 3, achieving a stable connection between the two and ensuring that the overall structure is not easily loosened during use, thus enhancing the stability and reliability of the structure. The inner thread of the anchor rod 4 is connected to a screw rod 6, and one end of the screw rod 6 is fixedly connected to the rotating plate 12. The threaded connection between the screw rod 6 and the anchor rod 4 facilitates the rotation of the rotating plate 12 to drive the screw rod 6 in and out of the anchor rod 4, thereby achieving position adjustment. The rotating plate 12 increases the force application area, making the operation of rotating the screw rod 6 more labor-saving and convenient, and facilitating precise control of the position of the screw rod 6. A nut 5 is provided on the outer side of the screw rod 6. The nut 5 can be tightened or loosened to lock or release the screw rod 6, thereby fixing or adjusting the relative position of the screw rod 6 and meeting the needs for fixing the position of the component under different working conditions. One end of the screw 6 is fixedly connected to a rotating block 7. The rotating block 7 allows the operator to apply force directly by hand or tool to drive the screw 6 to rotate, making the threaded operation between the screw 6 and components such as the anchor rod 4 and nut 5 easier and more efficient.

[0025] The working principle of this utility model is as follows: The embedded frame 2 is embedded into the wall, and the fixed cylinder 3 is dragged and threaded into the inner wall of the groove 14 to install the fixed cylinder 3. The filling layer 2 is then filled into the waterproof groove 9 to provide waterproofing for the anchor rod 4. The filling layer 2 will expand when it comes into contact with water, forming an elastic colloid that blocks the water flow. The anchor rod 4 is twisted to extend into the fixed cylinder 3, which in turn drives the plug 8 to insert into the wall. The rotating block 7 is dragged to rotate the screw 6 and the rotating plate 12. Through the cooperation of the guide groove 13 and the sliding groove 19, the sliding rod 16 drives the limiting block 10 to slide out along the insertion hole 15 and insert into the wall to further limit and fix the anchor rod 4.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A coal mine roadway support anchor fixing device, comprising an embedded frame (1), characterized in that: A waterproof component is provided inside the embedded frame (1); the waterproof component includes a groove (14) formed on the inner wall side of the embedded frame (1), a fixing cylinder (3) is provided inside the groove (14), a waterproof groove (9) is formed on the inner wall side of the groove (14), a filling layer (2) adapted to the waterproof groove (9) is provided between the fixing cylinder (3) and the embedded frame (1), the filling layer (2) is a polyurethane waterproof sealant, the surface of the filling layer (2) is coated with a cement-based penetrating crystalline waterproof coating, an anchor rod (4) is provided inside the fixing cylinder (3), the anchor rod (4) is hollow inside, and a reinforcing connection component is provided inside the anchor rod (4).

2. The coal mine roadway support anchor mesh fixing device according to claim 1, characterized in that: The reinforced connection assembly includes a fixing plate (11) fixedly connected to the inner wall side of the anchor rod (4), a rotating plate (12) rotatably connected to the side of the fixing plate (11), a plurality of guide grooves (13) are provided on the inner side of the rotating plate (12), a sliding rod (16) is slidably connected in the guide groove (13), and a limit block (10) is fixedly connected to one end of the sliding rod (16).

3. The coal mine roadway support anchor mesh fixing device according to claim 2, characterized in that: The outer side of the fixed plate (11) is provided with a plurality of sliding grooves (19) that are adapted to the sliding rod (16). A slider (17) is fixedly connected to the outer side of the sliding rod (16). A guide rail (18) adapted to the slider (17) is provided on the inner side of the sliding groove (19).

4. The coal mine roadway support anchor mesh fixing device according to claim 3, characterized in that: The anchor rod (4) has multiple insertion holes (15) on its outer side that are compatible with the limiting block (10), and one end of the anchor rod (4) is fixedly connected to a plug (8).

5. A coal mine roadway support anchor mesh fixing device according to claim 4, characterized in that: The outer side of the fixed cylinder (3) is provided with a slot that matches the anchor rod (4), the inner wall of the slot is provided with an internal thread, and the outer side of the anchor rod (4) is provided with an external thread that matches the internal thread.

6. A coal mine roadway support anchor mesh fixing device according to claim 5, characterized in that: The anchor rod (4) has a screw rod (6) threaded on its inner side, and one end of the screw rod (6) is fixedly connected to the rotating plate (12).

7. A coal mine roadway support anchor mesh fixing device according to claim 6, characterized in that: A nut (5) is provided on the outside of the screw (6), and a rotating block (7) is fixedly connected to one end of the screw (6).

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