Mining anchor net connecting tool

Abstract

The invention relates to a mining anchor net connecting tool, and belongs to the technical field of anchor net construction. Comprising an anchor rod, a tray and an anchor rod nut A. The anchor rod penetrates through a center line shaft hole of the tray and is fixed to a roadway wall, one face of the tray abuts against the roadway wall, and the other face of the tray is tightly attached to the anchor rod nut A arranged on the anchor rod in a sleeving mode. The elastic pulling and connecting rod piece is fixed between the tray and the anchor rod nut B. The elastic pulling and connecting rod piece is provided with a first connecting hook body and a second connecting hook body which are used for pulling and connecting the anchor net. Compared with the prior art, the anchor net fixing device has the following beneficial effects that the hook bodies of the first connecting hook bodies and the second connecting hook bodies are connected to the meshes of the adjacent anchor nets in a hung mode, the anchor nets can be fixed through the tray, meanwhile, the anchor nets can be fixed through the first connecting hook bodies and the second connecting hook bodies, and the overall stability of the anchor nets is remarkably improved.

Description

Technical Field

[0001] The present invention relates to a mining connection anchor net tool, belonging to the technical field of anchor net construction. Background Art

[0002] The connection of the anchor net plays a key role in the mine support system. It can prevent the collapse of rock masses. Specifically, through the synergistic effect of anchor bolts and metal nets, the displacement of broken rock masses can be effectively restricted, reducing the risk of rib spalling and roof fall accidents. The invention with the patent number 201720478683.0 discloses a new combined support structure for underground coal mine roadways. It includes an inner anchor net and anchor cables. There is also an outer anchor net outside the inner anchor net, and a layer of mining bamboo mat outside the outer anchor net. The outer anchor net and the mining bamboo mat are supported by U-shaped sheds and tied with steel wires. The U-shaped sheds are fixed with U-shaped clamps, and the U-shaped clamps are fixed on the firm surrounding rock mass B with anchor cables. Concrete is poured between the inner anchor net and the outer anchor net. It adopts a combined support structure for roadways of anchor net cable + U-shaped shed + concrete + anchor cable.

[0003] Although the above patent can achieve the support function, the current technology has incomplete considerations and has the following drawbacks: For the existing support mesh sheets of coal mine roadways, the connection between the mesh sheets mostly directly uses steel wires for bundling. During the process of connecting the anchor nets with binding wires underground, if the hand movement is accidentally incorrect or affected by external forces, the sharp binding wires are very likely to scratch the fingers, palms and other parts of the operator. Moreover, the traditional networking method has low efficiency and low fastening degree.

[0004] To solve one of the above problems, there is an urgent need for a mining connection anchor net tool. Summary of the Invention

[0005] According to the deficiencies in the above prior art, the technical problem to be solved by the present invention is: How to respectively hook the hook bodies of the first connection hook body and the second connection hook body on the mesh holes of adjacent anchor nets. While the tray can fix the anchor net, the first connection hook body and the second connection hook body can also fix the anchor net, significantly improving the overall stability of the anchor net. For this purpose, a mining connection anchor net tool is provided.

[0006] The mining connection anchor net tool of the present invention is characterized in that it includes an anchor bolt, a tray and an anchor bolt nut A. The anchor bolt passes through the central axis hole of the tray and is fixed on the roadway wall. One side of the tray abuts against the roadway wall, and the other side of the tray closely fits the anchor bolt nut A sleeved on the anchor bolt. It is characterized in that: an elastic connecting rod is sleeved on the anchor bolt, an anchor bolt nut B is threadedly connected to the anchor bolt, the elastic connecting rod is fixed between the tray and the anchor bolt nut B, and a first connection hook body and a second connection hook body for tying the anchor net are installed on the elastic connecting rod.

[0007] First, fix the anchor bolt and use the anchor bolt nut A to fix the tray. Then, install the elastic connecting rod in place. Finally, use the anchor bolt nut B to fix the central sleeve between the anchor bolt nut B and the tray. The hook bodies of the first connecting hook body and the second connecting hook body are respectively hooked on the mesh holes of adjacent anchor nets. While the tray can fix the anchor net, the first connecting hook body and the second connecting hook body can also fix the anchor net, significantly improving the overall stability of the anchor net. The elastic connecting rod and the double-hook body structure form a flexible connection system, which can absorb the deformation energy of the surrounding rock and maintain the tension state of the anchor net through elastic deformation when the roof subsides. When the fixed end of the tray becomes loose due to broken rock mass, the hook body hooking structure can still maintain the secondary anchoring effect, forming a fail-safe mechanism and reducing the risk of overall support failure.

[0008] Preferably, the elastic connecting rod includes a central sleeve sleeved on the anchor bolt and an outer sleeve sleeved on the outside of the central sleeve. Two groups of outer convex teeth are arranged on the outer wall of the central sleeve, and two groups of inner convex teeth are arranged on the inner wall of the outer sleeve. The outer convex teeth and the inner convex teeth are arranged alternately, and a rubber shock-absorbing block is arranged between adjacent outer convex teeth and inner convex teeth. A reserved hole is arranged in the middle of the rubber shock-absorbing block. The first main connecting rod and the second main connecting rod are symmetrically installed on the outer circumference of the outer sleeve. A plurality of groups of side branch connecting rods A are respectively hinged on both sides of the first main connecting rod, and a plurality of groups of side branch connecting rods B are respectively hinged on both sides of the second main connecting rod. The free end of the side branch connecting rod A is installed with the first connecting hook body, and the free end of the side branch connecting rod B is installed with the second connecting hook body.

[0009] Preferably, the first connecting hook body A includes two hinge seats A installed on the side branch connecting rod A. A rotating shaft A is rotatably installed between the two hinge seats A. It also includes a sliding rod A passing through the rotating shaft A. One end of the sliding rod A is provided with a hook body A, and the other end of the sliding rod A is provided with a tail seat A. A compression spring A is arranged on the sliding rod A between the tail seat A and the rotating shaft A. A middle retaining ring A is arranged in the middle of the sliding rod A. The middle retaining ring A and the compression spring A are arranged on both sides of the rotating shaft A. The elastic connecting rod and the double-hook body structure form a flexible connection system, which can absorb the deformation energy of the surrounding rock and maintain the tension state of the anchor net through elastic deformation when the roof subsides.

[0010] Preferably, the second connecting hook body includes a hinge seat B installed on the side branch connecting rod B. A rotating shaft B is rotatably installed between two groups of the hinge seats B. It further includes a sliding rod B of the rotating shaft B. One end of the sliding rod B is provided with a hook body B, and the other end of the sliding rod B is provided with a tail seat B. A compression spring B is arranged on the sliding rod B between the tail seat B and the rotating shaft B. A middle retaining ring B is arranged in the middle of the sliding rod B. The middle retaining ring B and the compression spring B are arranged on both sides of the rotating shaft B. The elastic connecting rod and the double-hook body structure form a flexible connection system, which can absorb the deformation energy of the surrounding rock and maintain the tension state of the anchor net through elastic deformation when the roof subsides.

[0011] Preferably, four groups of the side branch connecting rods A are provided, and two adjacent groups of the side branch connecting rods A are arranged in opposite directions. Four groups of the side branch connecting rods B are provided, and two adjacent groups of the side branch connecting rods B are arranged in opposite directions.

[0012] Preferably, both the first main connecting rod and the second main connecting rod are welded to the outer wall of the outer sleeve.

[0013] Preferably, four groups of reserved holes are provided. The four groups of reserved holes are arranged around the same vertical center line and the included angle between two adjacent ones is 90 degrees.

[0014] Preferably, the rubber shock-absorbing blocks are arranged along the length direction of the outer sleeve.

[0015] Preferably, first fix the bolt, and fix the tray with the bolt nut A. Then install the elastic connecting rod in place. Finally, fix the central sleeve between the bolt nut B and the tray with the bolt nut B. The hook bodies of the first connecting hook body and the second connecting hook body are respectively hooked on the mesh holes of adjacent anchor nets. While the tray can fix the anchor net, the first connecting hook body and the second connecting hook body can also fix the anchor net. It is especially suitable for complex geological conditions such as soft rock roadways and high-stress fracture zones, and significantly improves the reliability and adaptability of the anchor net system through the support principle of combining rigidity and flexibility.

[0016] Preferably, the inner diameter of the central sleeve is larger than the outer diameter of the bolt nut A, and the bolt nut A is placed inside the central sleeve.

[0017] Compared with the prior art, the present invention has the following beneficial effects: For the mine connecting anchor net tool of the present invention, first fix the bolt, and fix the tray with the bolt nut A. Then install the elastic connecting rod in place. Finally, fix the central sleeve between the bolt nut B and the tray with the bolt nut B. The hook bodies of the first connecting hook body and the second connecting hook body are respectively hooked on the mesh holes of adjacent anchor nets. While the tray can fix the anchor net, the first connecting hook body and the second connecting hook body can also fix the anchor net, significantly improving the overall stability of the anchor net.

[0018] For the mine connection anchor net tool described in the present invention, the elastic tension rod and the double hook body structure form a flexible connection system, which can absorb the deformation energy of the surrounding rock and maintain the tension state of the anchor net through elastic deformation when the roof subsides. When the fixed end of the tray becomes loose due to rock mass fragmentation, the hook body hanging structure can still maintain the secondary anchoring effect, forming a fail-safe mechanism and reducing the risk of overall support failure.

[0019] The mine connection anchor net tool described in the present invention is particularly suitable for complex geological conditions such as soft rock roadways and high-stress fracture zones, and significantly improves the reliability and adaptability of the anchor net system through the support principle of combining rigidity and flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0021] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic structural diagram of the present invention after removing the elastic tension rod; Figure 3 is a structural diagram of the elastic tension rod; Figure 4 is a structural diagram of the first connection hook body; Figure 5 is a structural diagram of the second connection hook body.

[0022] In the figure: 1, bolt; 2, tray; 3, bolt nut A; 4, elastic tension rod; 5, bolt nut B; 6, first connection hook body; 7, central sleeve; 8, outer convex teeth; 9, outer layer sleeve; 10, inner convex teeth; 11, rubber shock absorber; 12, reserved hole; 13, first main connecting rod; 14, second main connecting rod; 15, side branch connecting rod A; 16, side branch connecting rod B; 17, second connection hook body; 18, hinge seat A; 19, rotating shaft A; 20, sliding rod A; 21, hook body A; 22, tail seat A; 23, compression spring A; 24, middle retaining ring A; 25, hinge seat B; 26, rotating shaft B; 27, sliding rod B; 28, hook body B; 29, tail seat B; 30, compression spring B; 31, middle retaining ring B. DETAILED DESCRIPTION OF THE INVENTION

[0023] The following further describes the present invention with reference to the drawings: The following further illustrates the present invention through specific embodiments, but does not limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0024] Example 1, as Figure 1-2 shown, the mining connection anchor net tool, the mining connection anchor net tool includes a bolt 1, a tray 2 and a bolt nut A3. The bolt 1 passes through the central axis hole of the tray 2 and is fixed on the roadway wall. One side of the tray 2 abuts against the roadway wall, and the other side of the tray 2 closely fits the bolt nut A3 sleeved on the bolt 1. It is characterized in that an elastic tension rod 4 is sleeved on the bolt 1, a bolt nut B5 is threadedly connected to the bolt 1, the elastic tension rod 4 is fixed between the tray 2 and the bolt nut B5, and a first connection hook body 6 and a second connection hook body 17 for tying the anchor net are installed on the elastic tension rod 4.

[0025] First, fix the bolt 1 and fix the tray 2 with the bolt nut A3. Then, install the elastic tension rod 4 in place. Finally, use the bolt nut B5 to fix the central sleeve 7 between the bolt nut B5 and the tray 2. The hook bodies of the first connection hook body 6 and the second connection hook body 17 are respectively hooked on the mesh holes of adjacent anchor nets. While the tray 2 can fix the anchor net, the first connection hook body 6 and the second connection hook body 17 can also fix the anchor net, significantly improving the overall stability of the anchor net. The elastic tension rod 4 and the double-hook body structure form a flexible connection system, which can absorb the deformation energy of the surrounding rock and maintain the tension state of the anchor net through elastic deformation when the roof subsides. When the fixed end of the tray becomes loose due to rock mass fragmentation, the hook body hooking structure can still maintain the secondary anchoring effect, forming a fail-safe mechanism and reducing the risk of overall support failure.

[0026] Example 2, as Figure 1-2 shown, the mining connection anchor net tool, the mining connection anchor net tool includes a bolt 1, a tray 2 and a bolt nut A3. The bolt 1 passes through the central axis hole of the tray 2 and is fixed on the roadway wall. One side of the tray 2 abuts against the roadway wall, and the other side of the tray 2 closely fits the bolt nut A3 sleeved on the bolt 1. It is characterized in that an elastic tension rod 4 is sleeved on the bolt 1, a bolt nut B5 is threadedly connected to the bolt 1, the elastic tension rod 4 is fixed between the tray 2 and the bolt nut B5, and a first connection hook body 6 and a second connection hook body 17 for tying the anchor net are installed on the elastic tension rod 4.

[0027] Further, referring to Figure 3-5, the elastic tension member 4 includes a central sleeve 7 sleeved on the bolt 1 and an outer sleeve 9 sleeved on the outside of the central sleeve 7. Two groups of outwardly protruding teeth 8 are provided on the outer wall of the central sleeve 7, and two groups of inwardly protruding teeth 10 are provided on the inner wall of the outer sleeve 9. The outwardly protruding teeth 8 and the inwardly protruding teeth 10 are arranged alternately, and a rubber damping block 11 is provided between adjacent outwardly protruding teeth 8 and inwardly protruding teeth 10. A reserved hole 12 is provided in the middle of the rubber damping block 11. On the outer circumference of the outer sleeve 9, a first main connecting rod 13 and a second main connecting rod 14 are symmetrically installed. On both sides of the first main connecting rod 13, a plurality of side connecting rods A15 are hinged respectively. On both sides of the second main connecting rod 14, a plurality of side connecting rods B16 are hinged respectively. A first connecting hook body 6 is installed at the free end of the side connecting rod A15, and a second connecting hook body 17 is installed at the free end of the side connecting rod B16.

[0028] Further, the first connecting hook body A21 includes two hinge seats A18 installed on the side connecting rod A15. A rotating shaft A19 is rotatably installed between the two hinge seats A18. It also includes a sliding rod A20 passing through the rotating shaft A19. One end of the sliding rod A20 is provided with a hook body A21, and the other end of the sliding rod A20 is provided with a tail seat A22. A compression spring A23 is provided on the sliding rod A20 between the tail seat A22 and the rotating shaft A19. A middle retaining ring A24 is provided in the middle of the sliding rod A20. The middle retaining ring A24 and the compression spring A23 are arranged on both sides of the rotating shaft A19. The elastic tension member 4 and the double-hook body structure form a flexible connection system, which can absorb the deformation energy of the surrounding rock and maintain the tension state of the anchor net through elastic deformation when the roof subsides.

[0029] Further, the second connecting hook body 17 includes a hinge seat B25 installed on the side connecting rod B16. A rotating shaft B26 is rotatably installed between the two hinge seats B25. It also includes a sliding rod B27 of the rotating shaft B26. One end of the sliding rod B27 is provided with a hook body B28, and the other end of the sliding rod B27 is provided with a tail seat B29. A compression spring B30 is provided on the sliding rod B27 between the tail seat B29 and the rotating shaft B26. A middle retaining ring B31 is provided in the middle of the sliding rod B27. The middle retaining ring B31 and the compression spring B30 are arranged on both sides of the rotating shaft B26. The elastic tension member 4 and the double-hook body structure form a flexible connection system, which can absorb the deformation energy of the surrounding rock and maintain the tension state of the anchor net through elastic deformation when the roof subsides.

[0030] Further, there are four groups of side connecting rods A15, and adjacent two groups of side connecting rods A15 are arranged back to back. There are four groups of side connecting rods B16, and adjacent two groups of side connecting rods B16 are arranged back to back.

[0031] Further, both the first main connecting rod 13 and the second main connecting rod 14 are welded to the outer wall of the outer sleeve 9.

[0032] Further, there are four groups of reserved holes 12, and the four groups of reserved holes 12 are arranged around the same vertical center line with an included angle of 90 degrees between adjacent ones.

[0033] Further, the rubber shock-absorbing block 11 is arranged along the length direction of the outer sleeve 9.

[0034] Further, first fix the anchor bolt 1, and fix the tray 2 with the anchor bolt nut A3. Then install the elastic connecting rod 4 in place. Finally, fix the central sleeve 7 between the anchor bolt nut B5 and the tray 2 by using the anchor bolt nut B5. The hook bodies of the first connecting hook body 6 and the second connecting hook body 17 are respectively hooked on the mesh holes of adjacent anchor nets. While the tray 2 can fix the anchor net, the first connecting hook body 6 and the second connecting hook body 17 can also fix the anchor net. It is especially suitable for complex geological conditions such as soft rock roadways and high-stress fracture zones, and significantly improves the reliability and adaptability of the anchor net system through the support principle of combining rigidity and flexibility.

[0035] Further, the inner diameter of the central sleeve 7 is larger than the outer diameter of the anchor bolt nut A3, and the anchor bolt nut A can be placed inside the central sleeve.

[0036] For the mining connection anchor net tool of the present invention, first fix the anchor bolt, and fix the tray with the anchor bolt nut A. Then install the elastic connecting rod in place. Finally, fix the central sleeve between the anchor bolt nut B and the tray by using the anchor bolt nut B. The hook bodies of the first connecting hook body and the second connecting hook body are respectively hooked on the mesh holes of adjacent anchor nets. While the tray can fix the anchor net, the first connecting hook body and the second connecting hook body can also fix the anchor net, significantly improving the overall stability of the anchor net.

[0037] For the mining connection anchor net tool of the present invention, the elastic connecting rod and the double-hook body structure form a flexible connection system, which can absorb the deformation energy of the surrounding rock and maintain the tension state of the anchor net through elastic deformation when the roof subsides. When the fixed end of the tray becomes loose due to rock mass fragmentation, the hook body hooking structure can still maintain the secondary anchoring effect, forming a fail-safe mechanism and reducing the risk of overall support failure.

[0038] The mining connection anchor net tool of the present invention is especially suitable for complex geological conditions such as soft rock roadways and high-stress fracture zones, and significantly improves the reliability and adaptability of the anchor net system through the support principle of combining rigidity and flexibility.

[0039] The above has shown and described 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 by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

[0040] Where the present invention is not described in detail, it is the well-known technology of those skilled in the art of this technology.

Claims

1. A mining anchor net connection tool, comprising an anchor rod, a tray and an anchor rod nut A, wherein the anchor rod passes through the center axis hole of the tray and is fixed on the tunnel wall, one side of the tray is against the tunnel wall, and the other side of the tray is tightly attached to the anchor rod nut A sleeved on the anchor rod, characterized in that: An elastic connecting rod is sleeved on the anchor rod, an anchor nut B is threadedly connected to the anchor rod, the elastic connecting rod is fixed between the tray and the anchor nut B, and a first connecting hook and a second connecting hook for pulling the anchor net are installed on the elastic connecting rod.

2. The mining anchoring net tool according to claim 1, characterized in that: The elastic tension rod comprises a central sleeve sleeved on the anchor rod and an outer sleeve sleeved on the outside of the central sleeve, two groups of external convex teeth are arranged on the outer wall of the central sleeve, and two groups of internal convex teeth are arranged on the inner wall of the outer sleeve, the external convex teeth and the internal convex teeth are arranged alternately, and rubber shock-absorbing blocks are arranged between adjacent external convex teeth and internal convex teeth, and a reserved hole is arranged in the middle of the rubber shock-absorbing blocks, and a first main connecting rod and a second main connecting rod are symmetrically installed on the outer circumference of the outer sleeve, and multiple groups of side branch connecting rods A are respectively hinged on both sides of the first main connecting rod, and multiple groups of side branch connecting rods B are respectively hinged on both sides of the second main connecting rod, the free end of the side branch connecting rod A is installed with a first connecting hook body, and the free end of the side branch connecting rod B is installed with a second connecting hook body.

3. The mining anchoring net tool according to claim 2, characterized in that: The first connecting hook body A includes two groups of hinged seats A installed on the side branch connecting rod A, and a rotating shaft A is rotatably installed between the two groups of hinged seats A. It also includes a sliding rod A that passes through the rotating shaft A, and a hook body A is provided at one end of the sliding rod A, and a tail stock A is provided at the other end of the sliding rod A. A compression spring A is provided on the sliding rod A between the tail stock A and the rotating shaft A, and a middle retaining ring A is provided in the middle of the sliding rod A. The middle retaining ring A and the compression spring A are provided on both sides of the rotating shaft A.

4. The mining anchoring net tool according to claim 3, characterized in that: The second connecting hook body includes an articulated seat B installed on the side branch connecting rod B, a rotating shaft B is rotatably installed between two groups of the articulated seats B, and also includes a sliding rod B of the rotating shaft B, a hook body B is provided at one end of the sliding rod B, a tail stock B is provided at the other end of the sliding rod B, a compression spring B is provided on the sliding rod B between the tail stock B and the rotating shaft B, a middle retaining ring B is provided in the middle of the sliding rod B, and the middle retaining ring B and the compression spring B are provided on both sides of the rotating shaft B.

5. The mining anchoring net connection tool according to claim 4, characterized in that: The side branch connecting rods A are provided in four groups, and two adjacent groups of the side branch connecting rods A are arranged back to back. The side branch connecting rods B are provided in four groups, and two adjacent groups of the side branch connecting rods B are arranged back to back.

6. The mining anchoring net connection tool according to claim 5, characterized in that: The first main connecting rod and the second main connecting rod are both welded to the outer wall of the outer sleeve.

7. The mining anchoring net connection tool according to claim 6, characterized in that: The reserved holes are provided in four groups, and the four groups of reserved holes are arranged around the same vertical center line and the angle between two adjacent ones is 90 degrees.

8. The mining anchoring net connection tool according to claim 7, characterized in that: The rubber shock-absorbing block is arranged along the length direction of the outer sleeve.

9. The mining anchoring net connection tool according to claim 8, characterized in that: First, fix the anchor rod, and fix the pallet with the anchor nut A, then install the elastic tension rod in place, and finally use the anchor nut B to fix the center sleeve between the anchor nut B and the pallet. The hook bodies of the first connecting hook body and the second connecting hook body are respectively hung on the meshes of adjacent anchor nets. While the pallet can fix the anchor net, the first connecting hook body and the second connecting hook body can also fix the anchor net.

10. The mining anchoring net connection tool according to claim 9, characterized in that: The inner diameter of the central sleeve is larger than the outer diameter of the anchor nut A, and the anchor nut A is built into the central sleeve.

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