A supporting anchor fixing device for tunnel

Abstract

The present invention discloses a tunnel support anchor fixing device, which relates to the field of anchor rod technology, including an anchor rod body, an anchor head fixedly installed at one end of the anchor rod body, and a tray is sleeved on the outer side of the anchor rod body, and a positioning nut is threadedly connected to the side of the tray on the outer side of the anchor rod body, and also includes: a fixing component, which is symmetrically arranged on one side of the tray, the fixing component includes a fixing frame, a fastening component, which is arranged inside the anchor rod body, and a fixing frame, which is symmetrically installed on one side of the tray, and the fixing frames are symmetrically arranged on one side of the tray in two groups, and a support frame is fixedly installed between the two fixing frames in each group, and a movable frame is sleeved on the outer side of the support frame; so that the metal mesh can be reliably fixed when supporting the tunnel, and the support effect of the tunnel can be improved by cooperating with the anchor rod body and the metal mesh, and the metal mesh can be prevented from moving easily during the support process, thereby improving the support reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of anchor rods, in particular to a supporting anchor rod fixing device for a tunnel. Background Art

[0002] Anchor bolts are a fundamental component of roadway support in modern coal mines. They reinforce the surrounding rock of the roadway, allowing the surrounding rock to support itself. Anchor bolts are now used not only in mining but also in engineering technology to reinforce slopes, tunnels, and dams.

[0003] For example, a tunnel support anchor rod with the announcement number CN213899025U can prevent the residual rock and soil in the hole from entering the hollow pull rod through the filter plate when inserted. After being inserted into place, the filter plate is removed by the removal mechanism to complete the grouting, thereby preventing the hollow pull rod from entering the rock and soil and improving the grouting effect. In the support work of coal mine tunnels, in order to prevent tunnel collapse and rockfall, the tunnel is supported by using anchor rods and metal mesh together, and the metal mesh is fastened by the tray on the anchor rod. During the fastening process, only The metal mesh is fastened by a pallet, and the contact area between the pallet and the metal mesh is limited. The fixing reliability of the metal mesh is poor. If the rock surface is not cleaned and there are protrusions on the rock surface, the pallet as a whole cannot fit evenly with the rock surface after contact with the rock surface. The metal mesh is prone to loosening after being fixed, affecting the fixing effect of the metal mesh. If rockfall and collapse occur in subsequent tunnels, if the metal mesh is not firmly fixed, the metal mesh may sag or even tear under pressure, affecting the support effect of the metal mesh. There are certain defects in use.

[0004] Therefore, we propose a tunnel support anchor fixing device to solve the above problems. Summary of the Invention

[0005] The object of the present invention is to provide a supporting anchor fixing device for a tunnel, so as to solve the problem proposed in the above background technology that the tunnel is supported by using anchor rods together with metal mesh, the metal mesh is fastened by the tray on the anchor rod, and the metal mesh is fastened only by the tray during the fastening process. The contact area between the tray and the metal mesh is limited, and the fixing reliability of the metal mesh is poor.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a tunnel support anchor fixing device, comprising an anchor body, an anchor head fixedly mounted on one end of the anchor body, a tray sleeved on one side of the anchor body, and a positioning nut threadedly connected on one side of the anchor body located on the tray;

[0007] Also includes:

[0008] A fixing assembly is symmetrically arranged on one side of the pallet, and the fixing assembly includes a fixing frame;

[0009] A fastening assembly is arranged inside the anchor body;

[0010] The fixed frame is symmetrically installed on one side of the pallet. The fixed frame is symmetrically arranged in two groups on one side of the pallet, and a support frame is fixedly installed between the two fixed frames in each group. A movable frame is sleeved on the outer side of the support frame. At the same time, a fixed platform is fixedly installed on one side of the movable frame, and a plurality of convex strips are fixedly installed on the outer side of the fixed platform.

[0011] The positioning rod is rotatably connected to one side of the fixed platform. A placement groove is penetrated through one side of the positioning rod, and a fixing ring is fixedly installed on one side of the outer side of the positioning rod.

[0012] Preferably, a telescopic spring is sleeved on one side of the fixed ring outside the positioning rod, and one end of the telescopic spring is fixedly connected to the fixed ring, and a movable ring is fixedly installed on the other end of the telescopic spring, and the movable ring is slidably connected to the positioning rod.

[0013] By adopting the above technical solution, the movable ring can always abut against the metal mesh during the process of the positioning rod being inserted into the rock formation.

[0014] Preferably, a fixed rod is symmetrically installed on one side of the movable ring close to the fixed ring, and the two fixed rods are fixedly connected to the movable ring, and a movable groove is opened inside the fixed rod, and a movable block is slidably connected inside the movable groove, and a movable rod is slidably connected inside the fixed rod, and the movable block is fixedly connected to the movable rod, and an adaptive spring is sleeved on the outside of the movable rod on one side of the movable block, and both ends of the adaptive spring are fixedly connected to the movable block and the movable groove respectively, and a mounting block is fixedly installed on one end of the two movable rods away from the movable block.

[0015] By adopting the above technical solution, the movement of the fixing rod can drive the installation block to move.

[0016] Preferably, the movable frame is symmetrically and slidably connected to the sliding rods inside, and one end of the two sliding rods is fixedly installed with a mounting ring, and the other end of the two sliding rods is fixedly installed with a movable plate, and at the same time, two sets of guide rods are symmetrically and slidably connected to the two sides of the inside of the movable plate, and a return spring is sleeved on one side of the outside of the two guide rods, and the two ends of the return spring are respectively fixedly connected to the movable frame and the movable plate.

[0017] By adopting the above technical solution, the movement of the tray can drive the movable plate to move.

[0018] Preferably, a bite plate is fixedly mounted on a side of the movable plate away from the movable frame, and a limit plate is fixedly mounted on one side of the two groups of bite plates of the tray.

[0019] By adopting the above technical solution, the movable frame can be positioned during the process of fixing the metal mesh.

[0020] Preferably, the interiors of the two mounting blocks are symmetrically and slidingly connected with moving rods, and one end of the two moving rods is fixedly installed with a positioning sleeve, and a plurality of rubber strips are fixedly installed on the side of the positioning sleeve close to the fixed platform, and a mounting plate is fixedly installed on one side of the positioning sleeve.

[0021] By adopting the above technical solution, the positioning rod can be positioned during the process of fixing the metal mesh.

[0022] Preferably, a movable frame is fixedly mounted on one side of the mounting plate, and a sliding groove is provided through one side of the movable frame, and a column is slidably connected inside the sliding groove, and connecting frames are fixedly mounted on both ends of the column, and the connecting frames are fixedly connected to the fixed rod.

[0023] By adopting the above technical solution, when the fixing rod moves and the mounting block does not move, the fixing rod can drive the positioning sleeve to move.

[0024] Preferably, the fastening assembly includes several support blocks fixedly installed inside the anchor rod body, and the internal sliding connection of the several support blocks is connected to the push rod, and a moving block is fixedly installed at one end of the push rod. At the same time, support rods are symmetrically installed on one side of the moving block inside the anchor rod body, and the external symmetrical sliding connection of the two support rods is connected to the sliding plate.

[0025] By adopting the above technical solution, the reliability of fixing the anchor rod body can be improved.

[0026] Preferably, fastening rods are symmetrically installed on both sides of the two sliding plates away from each other, and the fastening rods are slidably connected to the anchor rod body, and a connecting rod is symmetrically hinged on one side of the moving block, and the two connecting rods are hinged to the two sliding plates at one end away from the moving block.

[0027] By adopting the above technical solution, the movement of the push rod can cause the fastening rod to extend out of the anchor rod body.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows: the tunnel support anchor fixing device can reliably fix the metal mesh when supporting the tunnel, and the cooperation between the anchor body and the metal mesh can improve the tunnel support effect, prevent the metal mesh from moving easily during the support process, and improve the support reliability;

[0029] 1. When supporting the tunnel, a hole is drilled on the rock formation, and then the anchor rod body is extended into the hole. Grouting can be performed into the hole through the anchor rod body. After the slurry solidifies, the anchor rod body is fixed. Then, the movable frame can be moved according to the position of the node wrapped around the metal mesh, and the positioning rod is rotated on the fixed platform, so that the wrapped node on the metal mesh can be stuck in the placement groove. Then, the staff can turn the nut. After the nut is turned, the tray is pushed to move, so that the tray is close to the rock formation, and the node on the metal mesh is stuck in the placement groove. As the tray moves, the positioning rod can be driven to move, so that the positioning rod can be inserted into the rock formation. After the positioning rod is inserted into the rock formation, the tray continues to move, so that the movable ring contacts the rock surface, and then as the tray moves, the movable ring can slide on the positioning rod, so that the telescopic spring can be compressed and the fixed rod can be driven to slide on the fixed ring, so that the fixed rod and the movable ring can be fixed. The movable rod moves, causing the mounting block to contact the movable ring, and then the tray continues to move. The elastic coefficient of the return spring is less than the elastic coefficient of the adaptation spring. The subsequent movement of the tray can push the mounting ring to move, so that the mounting ring gradually fits the movable frame. While the mounting ring moves, the movable plate can be driven to move by the sliding rod, so that the movable plate slides on the guide rod and stretches the return spring. After the mounting ring moves and fits the movable frame, the bite plate fits the limit plate, and the movable frame is positioned by the bite of the teeth between the bite plate and the limit plate. The metal mesh node can be limited by the positioning rod, and the metal mesh can be reliably fixed without the tray contacting the rock surface, so that the metal mesh can be reliably fixed when supporting the tunnel. The cooperation between the anchor rod body and the metal mesh can improve the supporting effect of the tunnel, avoid the metal mesh from moving easily during the support process, and improve the support reliability.

[0030] 2. When fixing the metal mesh, as the positioning rod is inserted into the rock formation, the movable frame can be automatically positioned. After the movable frame is positioned, the tray continues to move, so that the movable block can slide in the movable groove, so that the spring can be stretched and adapted. At this time, the mounting block abuts against the mounting ring, and the mounting ring abuts against the movable frame. The movable block does not move compared to the tray, and the insertion of the positioning rod can move the fixed rod, and the fixed rod moves and drives the connecting frame to move, and then the sliding connection between the column rod and the sliding groove between the connecting frame pushes the movable frame to move, and then drives the positioning sleeve to move, so that the two positioning sleeves can fit tightly on the outside of the fixed platform. The friction force is increased by the rubber strips and the convex strips, and the positioning rod can be positioned at this time, so that the positioning rod will not rotate easily, and then the tray can continue to move. During the movement of the tray, the column rod can move in the straight section of the sliding groove, so that the positioning rod continues to be inserted into the rock layer, so that the metal mesh nodes are respectively in contact with the rock surface and the inner side of the placement groove, so that the metal mesh nodes will not move easily, and after the metal mesh is reliably fixed, the positioning rod will not be easily displaced, avoiding the metal mesh being forced to drive the positioning rod to move during the support process, and the movable ring can always fit with the metal mesh, avoiding the metal mesh being deformed by the force during the support process, thereby improving the reliability of the support;

[0031] 3. After the anchor body is inserted into the hole and grouting is completed, the push rod can be lowered to move it. The push rod slides on the support block to limit the position, and the support block will not cause blockage inside the anchor body. After the push rod moves, the moving block can be pulled to move, so that the two connecting rods rotate. The rotation of the connecting rod can drive the two sliding plates away from each other, and then drive the two sets of fastening rods to extend out of the anchor body. The extension of the fastening rod can improve the reliability of the anchor body fixation, so that the anchor body will not be cleaned out of the hole, thereby improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the structure of the tray of the present invention;

[0034] Figure 3 This is a schematic diagram of the structure of the fixing assembly of the present invention;

[0035] Figure 4 This is a schematic diagram of the partial explosion structure of the fixing assembly of the present invention;

[0036] Figure 5 This is a schematic diagram of the cross-sectional structure of the fixing rod of the present invention;

[0037] Figure 6 It is a schematic diagram of the movable frame structure of the present invention;

[0038] Figure 7 For the present invention Figure 6Schematic diagram of the enlarged structure of area A in the middle;

[0039] Figure 8 For the present invention Figure 4 Schematic diagram of the enlarged structure of the middle B area;

[0040] Figure 9 Schematic diagram of the fastening assembly structure of the present invention.

[0041] Figure: 1. Anchor rod body; 101. Anchor head; 102. Nut; 103. Tray; 2. Fixing assembly; 201. Fixing frame; 202. Support frame; 203. Movable frame; 204. Fixing platform; 205. Positioning rod; 206. Placement slot; 207. Fixing ring; 208. Telescopic spring; 209. Movable ring; 210. Fixing rod; 211. Movable slot; 212. Movable block; 213. Movable rod; 214. Adaptive spring; 215. Mounting block; 216. Sliding rod ;2161, mounting ring; 217, movable plate; 218, guide rod; 219, return spring; 220, bite plate; 221, limit plate; 222, moving rod; 223, positioning sleeve; 224, mounting plate; 225, moving frame; 226, connecting frame; 227, column; 228, sliding groove; 3, fastening assembly; 301, support block; 302, push rod; 303, moving block; 304, support rod; 305, sliding plate; 306, connecting rod; 307, fastening rod. DETAILED DESCRIPTION

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0043] See also Figures 1-9 The present invention provides a technical solution: a tunnel support anchor fixing device, comprising an anchor body 1, an anchor head 101 fixedly mounted on one end of the anchor body 1, a tray 103 sleeved on one side of the anchor body 1, and a positioning nut 102 threadedly connected to one side of the tray 103 on the outside of the anchor body 1;

[0044] Also includes:

[0045] The fixing assembly 2 is symmetrically arranged on one side of the tray 103, and the fixing assembly 2 includes a fixing frame 201;

[0046] The fixed frames 201 are symmetrically mounted on one side of the tray 103. Two sets of fixed frames 201 are symmetrically arranged on one side of the tray 103. A support frame 202 is fixedly mounted between the two fixed frames 201 in each set. A movable frame 203 is sleeved on the outer side of the support frame 202. A fixed platform 204 is fixedly mounted on one side of the movable frame 203. A plurality of convex strips are fixedly mounted on the outer side of the fixed platform 204.

[0047] The positioning rod 205 is rotatably connected to one side of the fixed platform 204. A placement groove 206 is formed through one side of the positioning rod 205, and a fixing ring 207 is fixedly installed on the outer side of the positioning rod 205.

[0048] A telescopic spring 208 is sleeved on one side of the fixed ring 207 outside the positioning rod 205, and one end of the telescopic spring 208 is fixedly connected to the fixed ring 207, and a movable ring 209 is fixedly installed on the other end of the telescopic spring 208, and the movable ring 209 is slidably connected to the positioning rod 205;

[0049] A fixed rod 210 is symmetrically installed on one side of the movable ring 209 close to the fixed ring 207, and the two fixed rods 210 are fixedly connected to the movable ring 209, and a movable groove 211 is opened inside the fixed rod 210, and a movable block 212 is slidably connected inside the movable groove 211, and a movable rod 213 is slidably connected inside the fixed rod 210, and the movable block 212 is fixedly connected to the movable rod 213, and an adaptable spring 214 is sleeved on the outside of the movable rod 213 on one side of the movable block 212, and the two ends of the adaptable spring 214 are respectively fixedly connected to the movable block 212 and the movable groove 211, and a mounting block 215 is fixedly installed on one end of the two movable rods 213 away from the movable block 212;

[0050] The movable frame 203 is symmetrically and slidably connected to the interior of the movable frame 203. One end of the two sliding rods 216 is fixedly mounted with a mounting ring 2161, and the other end of the two sliding rods 216 is fixedly mounted with a movable plate 217. At the same time, two sets of guide rods 218 are symmetrically and slidably connected to the interior of the movable plate 217 on both sides. The outer side of each guide rod 218 is provided with a return spring 219. The two ends of the return spring 219 are respectively fixedly connected to the movable frame 203 and the movable plate 217.

[0051] A bite plate 220 is fixedly mounted on one side of the movable plate 217 away from the movable frame 203 , and a limit plate 221 is fixedly mounted on one side of the tray 103 located on both sets of bite plates 220 .

[0052] Example 1: Figure 1-Figure 7As shown, when supporting the tunnel, a hole is drilled on the rock layer, and then the anchor body 1 is extended into the hole. Grouting can be performed into the hole through the anchor body 1. After the grout solidifies, the anchor body 1 is fixed. Then, the movable frame 203 can be moved according to the position of the winding node on the metal mesh, and the positioning rod 205 can be rotated on the fixed platform 204, so that the winding node on the metal mesh can be stuck in the placement groove 206. Then the staff can rotate the nut 102, and after the nut 102 is rotated, the tray 103 is pushed to move, so that the tray 1 03 approaches the rock formation, and the nodes on the metal mesh are stuck in the placement groove 206. As the tray 103 moves, the positioning rod 205 can be driven to move, so that the positioning rod 205 can be inserted into the rock formation. After the positioning rod 205 is inserted into the rock formation, the tray 103 continues to move, so that the movable ring 209 contacts the rock surface. Then, as the tray 103 moves, the movable ring 209 can slide on the positioning rod 205, so that the telescopic spring 208 can be compressed and the fixed rod 210 can be driven to slide on the fixed ring 207, so that the fixed rod 210 and the movable rod 213 are in contact with each other. The mounting block 215 is moved so as to contact the movable ring 209. Then the tray 103 continues to move. The elastic coefficient of the reset spring 219 is less than the elastic coefficient of the adaption spring 214. The subsequent movement of the tray 103 can push the mounting ring 2161 to move, so that the mounting ring 2161 moves and gradually fits with the movable frame 203. While the mounting ring 2161 moves, the sliding rod 216 can drive the movable plate 217 to move, so that the movable plate 217 slides on the guide rod 218 and stretches the reset spring 219. The movement of the mounting ring 2161 is in line with the movable frame 203. After the frame 203 is fitted, the bite plate 220 is fitted with the limit plate 221, and the movable frame 203 is positioned by the bite of the teeth between the bite plate 220 and the limit plate 221. The metal mesh node can be limited by the positioning rod 205, and the metal mesh can be reliably fixed without the tray 103 contacting the rock surface, so that the metal mesh can be reliably fixed when supporting the tunnel. The cooperation between the anchor rod body 1 and the metal mesh can improve the support effect of the tunnel, avoid the metal mesh from moving easily during the support process, and improve the support reliability.

[0053] The interiors of the two mounting blocks 215 are symmetrically and slidably connected to moving rods 222, and one end of the two moving rods 222 is fixedly mounted with a positioning sleeve 223. A plurality of rubber strips are fixedly mounted on the side of the positioning sleeve 223 close to the fixed platform 204. At the same time, a mounting plate 224 is fixedly mounted on one side of the positioning sleeve 223.

[0054] A movable frame 225 is fixedly installed on one side of the mounting plate 224, and a sliding groove 228 is opened through one side of the movable frame 225, and a column 227 is slidably connected inside the sliding groove 228. At the same time, connecting frames 226 are fixedly installed on both ends of the column 227, and the connecting frames 226 are fixedly connected to the fixed rod 210.

[0055] Example 2: Figure 3-Figure 4 and Figure 8 As shown, when the metal mesh is fixed, as the positioning rod 205 is inserted into the rock formation, the movable frame 203 can be automatically positioned. After the movable frame 203 is positioned, the tray 103 continues to move, so that the movable block 212 can slide in the movable groove 211, so that the adaptive spring 214 can be stretched. At this time, the mounting block 215 abuts against the mounting ring 2161, and the mounting ring 2161 abuts against the movable frame 203. The movable block 212 will not move compared to the tray 103, and the insertion of the positioning rod 205 can move the fixed rod 210. After the fixed rod 210 moves, it drives the connecting frame 226 to move, and then the sliding connection between the column 227 and the sliding groove 228 between the connecting frame 226 pushes the movable frame 225 to move, and then drives the positioning sleeve 223 to move, so that the two positioning The sleeve 223 can fit tightly to the outside of the fixed platform 204, and the friction is increased by the rubber strips and the convex strips. At this time, the positioning rod 205 can be positioned, so that the positioning rod 205 will not rotate easily, and the tray 103 can continue to move. During the movement of the tray 103, the column rod 227 can move in the straight section of the sliding groove 228, so that the positioning rod 205 continues to be inserted into the rock layer, so that the metal mesh nodes are respectively in contact with the rock surface and the inner side of the placement groove 206, so that the metal mesh nodes will not move easily, and after the metal mesh is reliably fixed, the positioning rod 205 will not be easily displaced, avoiding the metal mesh being forced to drive the positioning rod 205 to move during the support process, and the movable ring 209 can always fit with the metal mesh, avoiding the metal mesh being deformed by force during the support process, thereby improving the reliability of the support.

[0056] The fastening assembly 3 is arranged inside the anchor body 1;

[0057] The fastening assembly 3 includes a plurality of support blocks 301 fixedly mounted inside the anchor rod body 1, and push rods 302 are slidably connected to the interior of the plurality of support blocks 301, and a moving block 303 is fixedly mounted on one end of the push rod 302. At the same time, support rods 304 are symmetrically mounted on one side of the moving block 303 inside the anchor rod body 1, and sliding plates 305 are symmetrically slidably connected to the exterior of the two support rods 304.

[0058] The two sliding plates 305 are symmetrically installed with fastening rods 307 on both sides away from each other, and the fastening rods 307 are slidingly connected to the anchor rod body 1, and one side of the moving block 303 is symmetrically hinged with a connecting rod 306, and the two connecting rods 306 are respectively hinged to the two sliding plates 305 at one end away from the moving block 303.

[0059] Example 3: Figure 1 and Figure 9As shown, after the anchor body 1 is inserted into the hole and grouting is completed, the push rod 302 can be lowered to move. The push rod 302 slides on the support block 301 to limit the position, and the support block 301 will not cause blockage inside the anchor body 1. After the push rod 302 moves, the moving block 303 can be pulled to move, so that the two connecting rods 306 rotate. The rotation of the connecting rod 306 can drive the two sliding plates 305 away from each other, and then drive the two sets of fastening rods 307 to extend out of the anchor body 1. The extension of the fastening rod 307 can improve the reliability of the fixation of the anchor body 1, so that the anchor body 1 will not be cleaned out of the hole, thereby improving practicality.

[0060] Working principle: When using the tunnel support anchor fixing device, first, according to Figures 1-9 As shown, when supporting the tunnel, a hole is drilled on the rock formation, and then the anchor body 1 is extended into the hole. Grouting can be performed into the hole through the anchor body 1. After the slurry solidifies, the anchor body 1 is fixed. Then, the movable frame 203 can be moved according to the position of the winding node on the metal mesh, and the positioning rod 205 can be rotated on the fixed platform 204, so that the winding node on the metal mesh can be stuck in the placement groove 206. Then, the staff can turn the nut 102. After the nut 102 is rotated, the tray 103 is pushed to move, so that the tray 103 is close to the rock formation, and the node on the metal mesh is stuck in the placement groove 206. As the tray 103 moves, the positioning rod 205 can be driven to move, so that the positioning rod 205 can be inserted into the rock formation. After the positioning rod 205 is inserted into the rock formation, the tray 103 continues to move, so that the movable ring 209 contacts the rock surface. Then, as the tray 103 moves, the movable ring 209 can slide on the positioning rod 205, so that the telescopic spring can be compressed. 208 and drives the fixed rod 210 to slide on the fixed ring 207, so that the fixed rod 210 and the movable rod 213 move, so that the mounting block 215 contacts the movable ring 209, and then the tray 103 continues to move. The elastic coefficient of the return spring 219 is less than the elastic coefficient of the adaption spring 214. The subsequent movement of the tray 103 can push the mounting ring 2161 to move, so that the mounting ring 2161 moves and gradually fits with the movable frame 203. While the mounting ring 2161 moves, it can be The sliding rod 216 drives the movable plate 217 to move, so that the movable plate 217 slides on the guide rod 218 and stretches the return spring 219. After the mounting ring 2161 moves and fits with the movable frame 203, the bite plate 220 fits with the limit plate 221. The movable frame 203 is positioned by the bite of the teeth between the bite plate 220 and the limit plate 221. The metal mesh nodes can be limited by the positioning rod 205. The metal mesh can be reliably fixed without the tray 103 contacting the rock surface.

[0061] When the metal mesh is fixed, as the positioning rod 205 is inserted into the rock formation, the movable frame 203 can be automatically positioned. After the movable frame 203 is positioned, the tray 103 continues to move, so that the movable block 212 can slide in the movable groove 211, so that the spring 214 can be stretched. At this time, the mounting block 215 abuts against the mounting ring 2161, and the mounting ring 2161 abuts against the movable frame 203. The movable block 212 will not move compared to the tray 103, and the insertion of the positioning rod 205 can make the fixed rod 210 move. After the fixed rod 210 moves, it drives the connecting frame 226 to move, and then the sliding connection between the column 227 and the sliding groove 228 between the connecting frame 226 pushes the movable frame 225 to move, and then drives the positioning sleeve 223 to move, so that the two positioning sleeves 223 can fit tightly on the outside of the fixed platform 204, through the rubber strip The friction force is increased by the convex strip, and the positioning rod 205 can be positioned at this time, so that the positioning rod 205 will not rotate easily, and then the tray 103 can continue to move. During the movement of the tray 103, the column rod 227 can move in the straight section of the sliding groove 228, so that the positioning rod 205 can continue to be inserted into the rock layer, so that the metal mesh nodes are respectively in contact with the rock surface and the inner side of the placement groove 206. After the anchor rod body 1 is inserted into the hole and grouting is completed, the push rod 302 can be lowered to move. The push rod 302 slides on the support block 301 for limiting, and the support block 301 will not cause blockage inside the anchor rod body 1. After the push rod 302 moves, it can pull the moving block 303 to move, so that the two connecting rods 306 rotate. The rotation of the connecting rod 306 can drive the two sliding plates 305 to move away from each other, and then drive the two sets of fastening rods 307 to extend out of the anchor rod body 1.

[0062] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0063] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tunnel support anchor fixing device, comprising an anchor body (1), an anchor head (101) fixedly mounted on one end of the anchor body (1), a tray (103) sleeved on one side of the anchor body (1), and a positioning nut (102) threadedly connected on one side of the anchor body (1) located on the tray (103); It is characterized in that Also includes: A fixing assembly (2) is symmetrically arranged on one side of the tray (103), and the fixing assembly (2) includes a fixing frame (201); A fastening assembly (3) is arranged inside the anchor rod body (1); A fixed frame (201) is symmetrically mounted on one side of the tray (103), wherein the fixed frames (201) are symmetrically arranged on one side of the tray (103) in two groups, and a support frame (202) is fixedly mounted between the two fixed frames (201) in each group, and a movable frame (203) is sleeved on one side of the outer side of the support frame (202), and a fixed platform (204) is fixedly mounted on one side of the movable frame (203), and a plurality of convex strips are fixedly mounted on the outer side of the fixed platform (204); A positioning rod (205) is rotatably connected to one side of the fixed platform (204), a placement groove (206) is provided through one side of the positioning rod (205), and a fixing ring (207) is fixedly installed on the outer side of the positioning rod (205); The movable frame (203) is symmetrically and slidably connected to a sliding rod (216) inside, and a mounting ring (2161) is fixedly installed on one end of the two sliding rods (216), and a movable plate (217) is fixedly installed on the other end of the two sliding rods (216), and two sets of guide rods (218) are symmetrically and slidably connected to the inside of the movable plate (217), and a return spring (219) is sleeved on one side of the outside of the two guide rods (218), and the two ends of the return spring (219) are fixedly connected to the movable frame (203) and the movable plate (217) respectively; A bite plate (220) is fixedly mounted on one side of the movable plate (217) away from the movable frame (203), and a limit plate (221) is fixedly mounted on one side of the tray (103) located on both sets of bite plates (220).

2. A tunnel support anchor fixing device according to claim 1, characterized in that: A telescopic spring (208) is sleeved on one side of the fixed ring (207) outside the positioning rod (205), and one end of the telescopic spring (208) is fixedly connected to the fixed ring (207), and a movable ring (209) is fixedly installed on the other end of the telescopic spring (208), and the movable ring (209) is slidably connected to the positioning rod (205).

3. A tunnel support anchor fixing device according to claim 2, characterized in that: A fixed rod (210) is symmetrically installed on one side of the movable ring (209) close to the fixed ring (207), and the two fixed rods (210) are fixedly connected to the movable ring (209), and a movable groove (211) is provided inside the fixed rod (210), and a movable block (212) is slidably connected inside the movable groove (211), and a movable rod (213) is slidably connected inside the fixed rod (210), and the movable block (212) is fixedly connected to the movable rod (213), and an adaptable spring (214) is sleeved on the outside of the movable rod (213) on one side of the movable block (212), and the two ends of the adaptable spring (214) are fixedly connected to the movable block (212) and the movable groove (211) respectively, and a mounting block (215) is fixedly installed on one end of the two movable rods (213) away from the movable block (212).

4. A tunnel support anchor fixing device according to claim 3, characterized in that: The interiors of the two mounting blocks (215) are symmetrically and slidably connected to moving rods (222), and one end of the two moving rods (222) is fixedly mounted with a positioning sleeve (223), and a plurality of rubber strips are fixedly mounted on one side of the positioning sleeve (223) close to the fixed platform (204), and a mounting plate (224) is fixedly mounted on one side of the positioning sleeve (223).

5. A tunnel support anchor fixing device according to claim 4, characterized in that: A movable frame (225) is fixedly mounted on one side of the mounting plate (224), and a sliding groove (228) is provided through one side of the movable frame (225), and a column (227) is slidably connected inside the sliding groove (228), and connecting frames (226) are fixedly mounted on both ends of the column (227), and the connecting frames (226) are fixedly connected to the fixed rod (210).

6. The tunnel support anchor fixing device according to claim 1, characterized in that: The fastening assembly (3) comprises a plurality of support blocks (301) fixedly mounted inside the anchor rod body (1), and a push rod (302) is slidably connected to the interior of the plurality of support blocks (301), and a moving block (303) is fixedly mounted on one end of the push rod (302), while a support rod (304) is symmetrically mounted on one side of the moving block (303) inside the anchor rod body (1), and a sliding plate (305) is symmetrically slidably connected to the exterior of two support rods (304).

7. A tunnel support anchor fixing device according to claim 6, characterized in that: Fastening rods (307) are symmetrically installed on both sides of the two sliding plates (305) away from each other, and the fastening rods (307) are slidably connected to the anchor rod body (1), and a connecting rod (306) is symmetrically hinged on one side of the moving block (303), and at the same time, the ends of the two connecting rods (306) away from the moving block (303) are respectively hinged to the two sliding plates (305).

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