Anchor rod for mining engineering

Abstract

The utility model relates to the field of anchor rods, in particular to an anchor rod for mining engineering, which comprises an anchor rod main body, a dispersing component is arranged on the surface of the anchor rod main body, an anchoring component is fixed on the surface of the anchor rod main body, the dispersing component comprises an annular block arranged on the surface of the anchor rod main body, and a connecting block is fixed on the top surface of the annular block. A U-shaped block is fixed to the surface of the connecting block, a circular groove is formed in the surface of the U-shaped block, limiting holes are formed in the surfaces of the annular block and the anchor rod body, and a sleeve is fixed to the surface of the annular block. Through cooperation of the first rotating block, the split ring, the second rotating block and the three sets of fixing blocks in the dispersing assembly, three-direction three-dimensional anchoring of the rock wall can be achieved, different rock wall angles are adapted, the rubber pads are additionally arranged on the surfaces of the fixing blocks so that unevenness of the rock wall can be compensated, the U-shaped blocks achieve secondary fixing of the annular blocks through right-angle bolts and limiting holes, anchoring stability is improved, and the anchoring effect is good. The sliding column drives the convex column to separate from the limiting hole to quickly disassemble the dispersing assembly.

Description

Technical Field

[0001] This utility model relates to the field of anchor bolts, and more particularly to an anchor bolt for mining engineering. Background Technology

[0002] Anchor bolts, as tension members embedded deep in rock and soil layers, are core reinforcement elements in underground engineering support systems, widely used for controlling the stability of surrounding rock in mine roadways, tunnels, and slope engineering. Currently, in the coal mining field, anchor bolt support technology, through a drilling-installation-anchoring process, can effectively control surrounding rock deformation and improve the roadway's bearing capacity. In conventional construction, anchor bolt holes are first drilled in the surrounding rock of the roadway, then the anchor bolt is inserted into the holes and fixed using an anchoring device. Finally, a pre-tightening force is applied through a tray and a fastening nut, forming an active support system for the surrounding rock.

[0003] Regarding the aforementioned technologies, the inventors believe that the following defects exist: Existing anchor bolts mostly adopt a slender rod-shaped structure, and their axial resistance characteristics result in anisotropic limitations in the direction of force, causing stress concentration effects between the anchoring system and the rock mass, which significantly reduces the interfacial bonding stability under complex load conditions. Utility Model Content

[0004] To address the anisotropy in the force direction caused by the axial resistance characteristics of anchor bolts, this application provides an anchor bolt for mining engineering.

[0005] This application provides a technical solution for a mining engineering anchor bolt: A mining engineering anchor bolt includes an anchor bolt body. The surface of the anchor bolt body is provided with a dispersion component, and an anchoring component is fixed to the surface of the anchor bolt body. The dispersion component includes an annular block on the surface of the anchor bolt body, and a connecting block is fixed to the top surface of the annular block. A U-shaped block is fixed to the surface of the connecting block, and a circular groove is formed on the surface of the U-shaped block. Limiting holes are formed on the surfaces of both the annular block and the anchor bolt body. A sleeve is fixed to the surface of the annular block, and a sliding groove is formed on the surface of the sleeve. A spring is provided inside the sleeve. A protruding post is movably connected inside the sleeve, and a sliding post is fixed to the surface of the protruding post. A circular plate is fixed to the bottom surface of the annular block. A rotating block one is fixed to the top surface of the circular plate. A split ring is provided on the surface of the rotating block one, and a rotating block two is provided on the surface of the split ring. A fixing block is fixed to the bottom surface of the rotating block two. A right-angle bolt is provided inside the U-shaped block. A spring washer is provided on the surface of the right-angle bolt, and a limiting nut is connected to the surface of the right-angle bolt via a thread.

[0006] By adopting the above technical solution, the sliding column can drive the convex column to slide, thereby separating the convex column from the limiting hole, which facilitates the disassembly of the dispersion component.

[0007] Furthermore, both the annular block and the connecting block have an arc-shaped groove on their inner walls, and the inner wall of the arc-shaped groove is in contact with the surface of the arc-shaped block.

[0008] Furthermore, the surface of the fixing block is provided with a threaded hole, and there are three sets of fixing blocks, which are arranged symmetrically to each other.

[0009] By adopting the above technical solution, three sets of fixing blocks are fixed on three sides of the rock wall, providing three-dimensional anchoring for the main body of the anchor rod. Rubber pads are added to the surface of the fixing blocks to compensate for the unevenness of the rock wall.

[0010] In a further configuration, the rotating block is fixed to the circular plate by bolts, and the bottom surface of the circular plate is in contact with the top surface of the outer rod.

[0011] Furthermore, an arc-shaped block is fixed to the surface of the anchor bolt body, and the arc-shaped block and the anchor bolt body are formed into an integral structure through a casting process.

[0012] By adopting the above technical solution, the arc-shaped groove inside the annular block matches the arc-shaped block on the surface of the anchor rod body, which facilitates positioning when installing the annular block.

[0013] Further, the anchoring assembly includes an outer rod disposed on the surface of the anchor rod body, and the surface of the outer rod is provided with a magnetic coating. A drill bit is fixed on the bottom surface of the outer rod, and grouting holes arranged in a ring are opened on the bottom surface of the outer rod. An arc-shaped groove is opened on the inner wall of the outer rod, and threaded holes are opened on the surfaces of both the outer rod and the anchor rod body, and self-locking bolts are provided inside the threaded holes.

[0014] Further, a connecting tube is fixed to the surface of the outer rod, and a capsule is fixed to the surface of the connecting tube. A spiral blade is fixed to the surface of the outer rod, and multiple sets of protrusions are fixed to the surface of the outer rod. The inner wall of the arc-shaped groove II is in contact with the surface of the arc-shaped block.

[0015] By adopting the above technical solution, the spiral blade and convex plate structure enhance the connection strength between the anchor rod body and the cement mortar.

[0016] Compared with related technologies, the anchor bolt for mining engineering provided by this utility model has the following beneficial effects:

[0017] This utility model provides an anchor bolt for mining engineering. By setting a dispersion component on the surface of the anchor bolt body, and through the cooperation of rotating block one, split ring, rotating block two and three sets of fixed blocks in the dispersion component, three-dimensional anchoring of rock wall can be achieved, which can adapt to different rock wall angles. Rubber pads are added to the surface of the fixed blocks to compensate for the unevenness of the rock wall. The U-shaped block is fixed to the ring block for secondary fixation through right-angle bolts and limiting holes, which improves the anchoring stability. The sliding column drives the convex column to disengage from the limiting hole, which allows for quick disassembly of the dispersion component.

[0018] This utility model provides an anchor bolt for mining engineering, which features an anchoring component on the surface of the anchor bolt body. The anchoring component has an outer rod, and the surface of the outer rod is coated with a magnetic coating to adsorb ferromagnetic rock powder to form a secondary reinforcement layer, thereby enhancing the anchoring effect of complex fractured rock masses. The arc-shaped groove inside the outer rod, together with the arc-shaped block on the surface of the anchor bolt body, improves the torsional resistance. The spiral blades and convex structures on the surface of the outer rod strengthen the connection strength between the anchor bolt body and the cement mortar. Attached Figure Description

[0019] Figure 1 A schematic diagram of a preferred embodiment of an anchor bolt for mining engineering provided by this utility model;

[0020] Figure 2 This is the front view of the present utility model;

[0021] Figure 3 This is a top view of the present invention;

[0022] Figure 4 This is a side sectional view of the present invention;

[0023] Figure 5 for Figure 3 Enlarged view of point A in the image.

[0024] Numbered components in the diagram: 1. Anchor bolt body; 2. Dispersion assembly; 201. Annular block; 202. Connecting block; 203. U-shaped block; 204. Circular groove; 205. Limiting hole; 206. Sleeve; 207. Sliding groove; 208. Spring; 209. Protruding post; 210. Sliding post; 211. Rotating block one; 212. Split ring; 213. Rotating block two; 214. Fixing block; 215. Right angle bolt; 216. Spring 217. Spring washer; 218. Limiting nut; 219. Arc groove one; 220. Threaded hole one; 221. Round plate; 3. Anchoring assembly; 301. Outer rod; 302. Magnetic coating; 303. Drill bit; 304. Grouting hole; 305. Arc groove two; 306. Threaded hole two; 307. Self-locking bolt; 308. Connecting pipe; 309. Capsule; 310. Helical blade; 311. Protrusion; 4. Arc block. Detailed Implementation

[0025] To facilitate understanding of this utility model, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings show typical embodiments of this utility model.

[0026] Example 1:

[0027] like Figure 1-5As shown, this utility model discloses a mining engineering anchor bolt, including an anchor bolt body 1. A dispersion component 2 is provided on the surface of the anchor bolt body 1, and an anchoring component 3 is fixed to the surface of the anchor bolt body 1. The dispersion component 2 includes an annular block 201 disposed on the surface of the anchor bolt body 1, and a connecting block 202 is fixed to the top surface of the annular block 201. A U-shaped block 203 is fixed to the surface of the connecting block 202, and a circular groove 204 is formed on the surface of the U-shaped block 203. Limiting holes 205 are formed on the surfaces of both the annular block 201 and the anchor bolt body 1. A sleeve 206 is fixed to the surface of the annular block 201, and a sliding groove 207 is formed on the surface of the sleeve 206. The sleeve 206 has a spring 208 inside, a protruding post 209 is movably connected inside the sleeve 206, and a sliding post 210 is fixed on the surface of the protruding post 209. A circular plate 220 is fixed on the bottom surface of the annular block 201, a rotating block 211 is fixed on the top surface of the circular plate 220, a split ring 212 is provided on the surface of the rotating block 211, a rotating block 213 is provided on the surface of the split ring 212, a fixing block 214 is fixed on the bottom surface of the rotating block 213, a right-angle bolt 215 is provided inside the U-shaped block 203, a spring washer 216 is provided on the surface of the right-angle bolt 215, and a limit nut 217 is connected to the surface of the right-angle bolt 215 by a thread.

[0028] like Figure 1-5 As shown, by sliding the sliding column 210, the sliding column 210 can drive the protrusion 209 to slide, thereby separating the protrusion 209 from the limiting hole 205, which facilitates the disassembly of the dispersion component 2.

[0029] like Figure 1-5 As shown, both the inner walls of the annular block 201 and the connecting block 202 are provided with arc-shaped grooves 218, and the inner walls of the arc-shaped grooves 218 are in contact with the surface of the arc-shaped block 4.

[0030] like Figure 1-5 As shown, the surface of the fixing block 214 is provided with a threaded hole 219, and there are three sets of fixing blocks 214, which are arranged symmetrically to each other.

[0031] like Figure 1-5 As shown, three sets of fixing blocks 214 are fixed on three sides of the rock wall to provide three-dimensional anchoring for the anchor rod body 1. Rubber pads are added to the surface of the fixing blocks 214 to compensate for the unevenness of the rock wall.

[0032] like Figure 1-5 As shown, the rotating block 211 is fixed to the circular plate 220 by bolts, and the bottom surface of the circular plate 220 is in contact with the top surface of the outer rod 301.

[0033] like Figure 1-5 As shown, an arc-shaped block 4 is fixed on the surface of the anchor bolt body 1, and the arc-shaped block 4 and the anchor bolt body 1 are integrated into a single structure through a casting process.

[0034] like Figure 1-5 As shown, the arc-shaped groove 218 inside the annular block 201 matches the arc-shaped block 4 on the surface of the anchor body 1, which facilitates positioning when installing the annular block 201.

[0035] In practice, the dispersion component 2 is equipped with a rotating block 211, a split ring 212, a rotating block 213, and a fixing block 214. The three sets of fixing blocks 214 can be fixed to the three sides of the rock wall to provide three-dimensional anchoring for the anchor rod body 1. When it is necessary to disassemble the ring block 201, the sliding column 210 can drive the protruding column 209 to slide, thereby separating the protruding column 209 from the limiting hole 205, which facilitates the disassembly of the dispersion component 2. At the same time, since the U-shaped block 203 is equipped with a right-angle bolt 215 inside, and the right-angle bolt 215 and the limiting hole 205 provide secondary fixation for the ring block 201, the fixing effect of the ring block 201 is improved. The surface of the U-shaped block 203 is provided with a circular groove 204, which can limit the spring washer 216 and the limiting nut 217 on the surface of the right-angle bolt 215.

[0036] Example 2:

[0037] like Figure 1-5 As shown, based on Embodiment 1, this utility model provides a technical solution: the anchoring component 3 includes an outer rod 301 disposed on the surface of the anchor rod body 1, and the surface of the outer rod 301 is provided with a magnetic coating 302. A drill bit 303 is fixed on the bottom surface of the outer rod 301, and a ring of grouting holes 304 are opened on the bottom surface of the outer rod 301. An arc-shaped groove 305 is opened on the inner wall of the outer rod 301, and threaded holes 306 are opened on the surfaces of both the outer rod 301 and the anchor rod body 1, and a self-locking bolt 307 is provided inside the threaded hole 306.

[0038] like Figure 1-5 As shown, a connecting tube 308 is fixed to the surface of the outer rod 301, and a capsule 309 is fixed to the surface of the connecting tube 308. A spiral blade 310 is fixed to the surface of the outer rod 301, and multiple sets of protrusions 311 are fixed to the surface of the outer rod 301. The inner wall of the arc groove 305 is in contact with the surface of the arc block 4.

[0039] like Figure 1-5 As shown, the spiral blade 310 and the protrusion 311 structure enhance the connection strength between the anchor rod body 1 and the cement mortar.

[0040] During implementation, the magnetic coating 302 on the surface of the outer rod 301 is used to adsorb ferromagnetic rock powder during installation to form a secondary reinforcement layer, which enhances the anchoring effect of complex fractured rock masses. The inner part of the outer rod 301 is provided with an arc-shaped groove 305, which, together with the arc-shaped block 4 on the surface of the anchor rod body 1, improves the torsional resistance of the anchor rod body 1. The surface of the outer rod 301 is provided with a spiral blade 310 and a protrusion 311 to strengthen the connection strength between the anchor rod body 1 and the cement mortar.

[0041] The advantages of this technical solution in practical applications include, but are not limited to, the following:

[0042] 1. The dispersion component 2 achieves multi-directional fixation through rotating block 1 211, split ring 212, and rotating block 213. The sliding column 210 controls the separation of the protrusion 209 from the limiting hole 205 to achieve quick disassembly. The right-angle bolt 215 cooperates with the circular groove 204 to achieve secondary fixation and limiting.

[0043] 2. The outer rod 301 is coated with a magnetic coating 302 to enhance rock powder adsorption. The arc groove 305 and the arc block 4 work together to improve torsional resistance. The spiral blade 310 and the convex piece 311 reinforce the mortar connection.

[0044] In this technical solution, holes are first drilled in the rock mass. After drilling, the diameter of the holes is larger than the diameter of the outer rod 301. Then, the outer rod 301 is screwed into the holes and cement mortar is poured. The annular block 201 is installed on the surface of the anchor rod body 1. At the same time, the fixing block 214 is attached to the rock mass for fixation. Then, cement mortar is poured. The dispersion component 2 is equipped with a rotating block 1 211, a split ring 212, a rotating block 213, and a fixing block 214. The three sets of fixing blocks 214 can be fixed to the three sides of the rock wall, providing three-dimensional anchoring for the anchor rod body 1. It can also adapt to different rock wall angles. Rubber pads or spring sheets can be added to the surface of the fixing block 214 to compensate for the unevenness of the rock wall. When it is necessary to remove the annular block 201, the sliding column 210 is slidable. The sliding column 210 can drive the protruding column 209 to slide, so that the protruding column 209 and the limiting hole 205 are aligned. Separation facilitates the disassembly of the dispersion component 2. Simultaneously, the U-shaped block 203 contains a right-angle bolt 215, which, along with the limiting hole 205, provides secondary fixation to the annular block 201, enhancing its fixing effect. The surface of the U-shaped block 203 has a circular groove 204, which limits the spring washer 216 and limiting nut 217 on the surface of the right-angle bolt 215. The magnetic coating 302 on the surface of the outer rod 301 adsorbs ferromagnetic rock powder during installation, forming a secondary reinforcement layer and enhancing the anchoring effect of complex fractured rock masses. The outer rod 301 contains an arc-shaped groove 305, which, in conjunction with the arc-shaped block 4 on the surface of the anchor rod body 1, improves the torsional resistance of the anchor rod body 1. The surface of the outer rod 301 is provided with a spiral blade 310 and a protrusion 311, strengthening the connection between the anchor rod body 1 and the cement mortar.

[0045] The above are merely exemplary embodiments of this disclosure and should not be construed as limiting the scope of this disclosure. Any equivalent changes and modifications made in accordance with the teachings of this disclosure shall still fall within the scope of this disclosure. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not described in this disclosure.

Claims

1. A rock bolt for mining engineering, comprising a rock bolt body (1), characterized in that: The surface of the anchor body (1) is provided with a dispersion component (2), and the surface of the anchor body (1) is fixed with an anchoring component (3). The dispersion component (2) includes an annular block (201) disposed on the surface of the anchor body (1), and a connecting block (202) is fixed on the top surface of the annular block (201). A U-shaped block (203) is fixed on the surface of the connecting block (202), and a circular groove (204) is formed on the surface of the U-shaped block (203). Limiting holes (205) are formed on the surfaces of both the annular block (201) and the anchor body (1). A sleeve (206) is fixed on the surface of the annular block (201), and a sliding groove (207) is formed on the surface of the sleeve (206). A spring (208) is provided inside the sleeve (206), and a protruding post (209) is movably connected inside the sleeve (206). The surface of the protruding post (209) is fixed with a sliding post (210), the bottom surface of the annular block (201) is fixed with a circular plate (220), the top surface of the circular plate (220) is fixed with a rotating block one (211), the surface of the rotating block one (211) is provided with a split ring (212), the surface of the split ring (212) is provided with a rotating block two (213), the bottom surface of the rotating block two (213) is fixed with a fixing block (214), the inside of the U-shaped block (203) is provided with a right angle bolt (215), the surface of the right angle bolt (215) is provided with a spring washer (216), and the surface of the right angle bolt (215) is connected to a limit nut (217) by a thread.

2. The anchor bolt for mining engineering according to claim 1, characterized in that, The inner walls of the annular block (201) and the connecting block (202) are provided with an arc-shaped groove (218), and the inner wall of the arc-shaped groove (218) is in contact with the surface of the arc-shaped block (4).

3. The anchor bolt for mining engineering according to claim 1, characterized in that, The surface of the fixing block (214) is provided with a threaded hole (219). There are three sets of fixing blocks (214), and the fixing blocks (214) are arranged symmetrically to each other.

4. The anchor bolt for mining engineering according to claim 1, characterized in that, The rotating block (211) is fixed to the circular plate (220) by bolts, and the bottom surface of the circular plate (220) is in contact with the top surface of the outer rod (301).

5. A mining engineering anchor bolt according to claim 1, characterized in that, An arc-shaped block (4) is fixed on the surface of the anchor body (1), and the arc-shaped block (4) and the anchor body (1) are integrated into a single structure through a casting process.

6. The anchor bolt for mining engineering according to claim 1, characterized in that, The anchoring assembly (3) includes an outer rod (301) disposed on the surface of the anchor body (1), and the surface of the outer rod (301) is provided with a magnetic coating (302). A drill bit (303) is fixed on the bottom surface of the outer rod (301), and a ring-shaped grouting hole (304) is opened on the bottom surface of the outer rod (301). An arc-shaped groove (305) is opened on the inner wall of the outer rod (301), and threaded holes (306) are opened on the surfaces of both the outer rod (301) and the anchor body (1), and a self-locking bolt (307) is provided inside the threaded hole (306).

7. A mining engineering anchor bolt according to claim 6, characterized in that, The outer rod (301) has a connecting tube (308) fixed on its surface, and a capsule (309) is fixed on the surface of the connecting tube (308). The outer rod (301) has a spiral blade (310) fixed on its surface, and multiple sets of protrusions (311) are fixed on its surface. The inner wall of the arc groove (305) is in contact with the surface of the arc block (4).

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