Tunnel anchor rod with pulling resistance enhancing structure

Abstract

The utility model relates to the field of tunnel anchor rods, and discloses a tunnel anchor rod with an anti-pulling force enhancing structure, which comprises an anchor rod main body, the left end of the outer wall of the anchor rod main body is in threaded connection with a mounting block, the left end of the mounting block is provided with a fixing mechanism, and the fixing mechanism comprises a reinforcing assembly and a positioning assembly. A discharging assembly is arranged in the anchor rod body, a reinforcing assembly comprises a positioning plate, a moving block is fixedly connected to the right surface of the positioning plate, a sliding groove is formed in the inner wall of the positioning plate, a sliding rod is slidably connected to the inner wall of the sliding groove, and a fixing plate is slidably connected to the outer wall of the sliding rod. According to the anchor rod, through the cooperation of the fixing mechanism, when the anchor rod body is installed, the fixing plate can be inserted into a nearby soil layer, the problem of the anchor rod body is solved, the anchor rod body is prevented from rotating or deviating in the grouting process, the stability during grouting is improved, and the grouting effect is ensured.

Description

Technical Field

[0001] The utility model relates to the field of tunnel anchor rods, in particular to a tunnel anchor rod with a pull-out resistance enhancement structure. Background Art

[0002] In tunnel engineering, anchor bolts, as a common support structure, are widely used to support and reinforce the stability of surrounding rock. By anchoring the rock and soil layers, anchor bolts effectively enhance the overall stability of the tunnel and prevent deformation and collapse of the surrounding rock. Tunnel anchor bolts primarily rely on anchoring force (such as pullout resistance) to provide support and reinforcement. Especially in weak or unstable surrounding rock, the pullout resistance directly determines the safety and effectiveness of the support.

[0003] Currently, before installing tunnel anchors, a hole is generally drilled in the tunnel, the tunnel anchor is inserted into the hole, and concrete slurry is injected to improve the pull-out resistance of the anchor.

[0004] However, after being inserted into the hole, the tunnel anchor can still rotate, which can adversely affect the grouting effect of the concrete slurry. Furthermore, traditional tunnel anchors typically have multiple grouting holes directly in the outer wall. This makes it difficult to ensure that the concrete slurry flows evenly from each hole during injection, which can easily lead to uneven concrete slurry injection at different locations.

[0005] Therefore, a tunnel anchor with a pull-out resistance enhancement structure is proposed to solve the above problems. Utility Model Content

[0006] In order to make up for the above deficiencies, the present invention provides a tunnel anchor rod with a pull-out resistance enhancement structure, aiming to improve the problem in the prior art that the anchor rod is easy to rotate during grouting, which affects the grouting effect.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a tunnel anchor rod with an anti-pull-out force enhanced structure, comprising an anchor rod body, the left end of the outer wall of the anchor rod body is threadedly connected to a mounting block, the left end of the mounting block is provided with a fixing mechanism, the fixing mechanism comprises a reinforcement assembly and a positioning assembly, the interior of the anchor rod body is provided with a discharging assembly, the reinforcement assembly comprises a positioning plate, the right surface of the positioning plate is fixedly connected to a moving block, the inner wall of the positioning plate is provided with a sliding groove, the inner wall of the sliding groove is slidably connected to a sliding rod, the outer wall of the sliding rod is slidably connected to a fixed plate, and the top of the mounting block is fixedly connected to a guide plate.

[0008] As a further description of the above technical solution:

[0009] The positioning assembly includes a round block, and the lower surface of the guide plate is provided with an arc groove.

[0010] As a further description of the above technical solution:

[0011] The discharge assembly includes a discharge hole, a discharge port is opened on the outer wall of the mounting block, a discharge pipe is fixedly connected to the inner wall of the discharge hole, a straight rod is fixedly connected to the front surface of the discharge pipe, a discharge pipe is passed through and fixedly connected to the front surface of the straight rod, and a through rod is fixedly connected to the rear surface of the discharge pipe.

[0012] As a further description of the above technical solution:

[0013] The moving block passes through and is slidably connected to the left surface of the installation block, and the right end of the fixing plate is configured to be conical.

[0014] As a further description of the above technical solution:

[0015] The fixing plate passes through and slides on the right surface of the guide plate, and both the fixing plate and the guide plate are arranged in an inclined shape.

[0016] As a further description of the above technical solution:

[0017] The round block is slidably connected to the inner wall of the arc-shaped groove, and the arc-shaped groove is arranged in an arc shape.

[0018] As a further description of the above technical solution:

[0019] The discharge hole is arranged on the outer wall of the anchor rod body.

[0020] As a further description of the above technical solution:

[0021] The straight rod is connected to the discharge pipe, the through rod is connected to the discharge pipe, and the discharge pipe is fixedly connected to the inner wall of the discharge hole.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the present invention, through the cooperation of the fixing mechanism, when the anchor rod body is installed, the fixing plate will penetrate into the nearby soil layer to ensure the stability of the anchor rod body and avoid the anchor rod body from rotating or deflecting during the grouting process, thereby improving the stability during grouting and ensuring the grouting effect.

[0024] 2. In the present invention, through the cooperation of the discharge components, the concrete slurry can be discharged evenly from the discharge port, the discharge pipe and the discharge pipe, ensuring the uniformity of concrete slurry filling at different positions, improving the grouting effect, and enhancing the pull-out resistance of the anchor rod body. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic front view of the three-dimensional structure of the overall device of the present invention;

[0026] Figure 2 This is a schematic diagram of a three-dimensional structure cross-section of the installation block and reinforcement assembly in the present invention;

[0027] Figure 3 This is a schematic diagram of the three-dimensional structure of the positioning plate and the fixing plate in the present utility model;

[0028] Figure 4 This is a schematic diagram of the three-dimensional structure of the fixed plate and the guide plate in the present invention;

[0029] Figure 5 This is a schematic diagram of the three-dimensional structure cross-section of the anchor rod body and the straight rod in the utility model.

[0030] Legend:

[0031] 1. Anchor rod body; 2. Mounting block; 31. Positioning plate; 32. Moving block; 33. Sliding rod; 34. Fixed plate; 35. Guide plate; 301. Slide groove; 41. Round block; 401. Arc groove; 51. Straight rod; 52. Discharge pipe; 53. Through rod; 54. Discharge pipe; 501. Discharge port; 502. Discharge hole. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0033] Reference Figure 1 - Figure 2 The utility model provides an embodiment: a tunnel anchor with an enhanced pull-out resistance structure, including an anchor body 1. The anchor body 1 is a tunnel anchor, which belongs to the prior art and can be implemented by technicians in this field. Since it is the prior art, it will not be described in detail in this case. Before using the anchor body 1, a hole will be opened in the tunnel, and then the anchor body 1 will be inserted into the tunnel to start grouting. The left end of the outer wall of the anchor body 1 is threadedly connected to the mounting block 2. When the anchor body 1 is aligned with the mounting block 2 and rotated forward, it can be screwed on the mounting block 2. A fixing mechanism is provided at the left end of the mounting block 2. The fixing mechanism includes a reinforcement component and a positioning component. A discharge component is provided inside the anchor body 1.

[0034] Reference Figure 2 - Figure 4The reinforcement component includes a positioning plate 31, a movable block 32 is fixedly connected to the right surface of the positioning plate 31, and the movable block 32 is located at the center of the right surface of the positioning plate 31. A sliding groove 301 is provided on the inner wall of the positioning plate 31, and a sliding rod 33 is slidably connected to the inner wall of the sliding groove 301. The sliding rod 33 is cylindrical and slides longitudinally along the inner wall of the sliding groove 301. The outer wall of the sliding rod 33 is slidably connected to a fixed plate 34, and the fixed plate 34 slides in the front and rear direction along the outer wall of the sliding rod 33. The mounting block 2 The top of the guide plate 35 is fixedly connected, the mounting block 2 provides support for the guide plate 35, the fixed plate 34 passes through the left surface of the mounting block 2, and the sliding rod 33, the fixed plate 34, the guide plate 35 and the slide groove 301 are each provided with four groups, forming a circular array with the center point of the positioning plate 31. The positioning assembly includes a round block 41, and an arc groove 401 is provided on the lower surface of the guide plate 35. The round block 41 will slide along the track of the arc groove 401. The arc groove 401 consists of a horizontal groove and a bevel groove.

[0035] Reference Figure 1 、 Figure 2 、 Figure 5 The discharge assembly includes a discharge hole 502. There are multiple groups of discharge holes 502, which are evenly distributed on the outer wall of the anchor body 1. The outer wall of the mounting block 2 is provided with a discharge port 501. The discharge port 501 is located at the right end of the outer wall of the mounting block 2. The inner wall of the discharge hole 502 is fixedly connected with a discharge pipe 52. The discharge pipe 52 is hollow. The front surface of the discharge pipe 52 is fixedly connected with a straight rod 51. The front surface of the straight rod 51 passes through and is fixedly connected with a discharge pipe 54. The discharge pipe 54 is hollow. The rear surface of the discharge pipe 54 is fixedly connected with a through rod 53.

[0036] Reference Figure 2 - Figure 4 The movable block 32 passes through and is slidably connected to the left surface of the mounting block 2, which can ensure the stability of the positioning plate 31. The right end of the fixed plate 34 is set to a cone. The conical design can be easily inserted into the soil. The fixed plate 34 passes through and slides on the right surface of the guide plate 35, sliding horizontally. The fixed plate 34 and the guide plate 35 are both set to an inclined shape. The round block 41 is slidably connected to the inner wall of the arc groove 401, and the arc groove 401 is set to an arc shape.

[0037] Reference Figure 1 、 Figure 2 、 Figure 5 The discharge hole 502 is opened on the outer wall of the anchor rod body 1, the straight rod 51 is connected to the discharge pipe 52, and the through rod 53 is connected to the discharge pipe 54. The concrete slurry can be discharged evenly from the discharge pipe 52, the discharge port 501 and the discharge pipe 54. The discharge pipe 54 is fixedly connected to the inner wall of the discharge hole 502.

[0038] Working principle: When using this device, first install the mounting block 2 on the anchor rod body 1, and then insert one end of the mounting block 2 into the pre-drilled hole. When inserted to the bottom of the hole, the positioning plate 31 will be squeezed by the soil layer, and the positioning plate 31 will move to the right, and will drive the moving block 32 to move to the right. The positioning plate 31 moving to the right will also squeeze the sliding rod 33 and the fixed plate 34, which can drive the sliding rod 33 and the fixed plate 34 to move to the right. When the sliding rod 33 moves, it will move along the track of the slide groove 301. When the fixed plate 34 moves to the right, it will penetrate the right surface of the guide plate 35 and will gradually penetrate into the soil, thereby enhancing the subsequent pull-out resistance of the anchor rod body 1 and ensuring stability.

[0039] When the anchor rod 31 is inserted into the hole, if there is any deviation, the anchor rod body 1 can be pulled to the right to drive the fixing plate 34 and the guide plate 35 to move to the right. The fixing plate 34 will shovel the soil layer slightly. When there is displacement space on the left side of the positioning plate 31, the anchor rod body 1 is rotated forward to drive the fixing plate 34 to rotate forward. When the fixing plate 34 rotates, the side will be squeezed and then move laterally. The laterally moving fixing plate 34 will drive the round block 41 to move along the trajectory of the arc groove 401. When the round block 41 moves along the trajectory of the arc groove 401, it will drive the fixing plate 34 to move to the left and will drive the positioning plate 31 and the moving block 32 to move to the left, which is convenient for adjusting the direction and avoiding deviation. After adjustment, the anchor rod body 1 is pushed to the left so that the fixing plate 34 is firmly embedded in the soil and remains stable.

[0040] Then fill the concrete slurry from the right end of the anchor body 1. The concrete slurry will eventually be evenly discharged from the discharge port 501, the discharge pipe 52 and the discharge pipe 54, ensuring uniform filling, further ensuring subsequent stability and improving pull-out resistance.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, 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 anchor with a pull-out resistance enhancement structure, comprising an anchor body (1), characterized in that: The left end of the outer wall of the anchor rod body (1) is threadedly connected to a mounting block (2), and the left end of the mounting block (2) is provided with a fixing mechanism, and the fixing mechanism includes a reinforcement component and a positioning component. A discharge component is provided inside the anchor rod body (1), and the reinforcement component includes a positioning plate (31). The right surface of the positioning plate (31) is fixedly connected to a moving block (32), and the inner wall of the positioning plate (31) is provided with a sliding groove (301), and the inner wall of the sliding groove (301) is slidably connected to a sliding rod (33), and the outer wall of the sliding rod (33) is slidably connected to a fixing plate (34). The top end of the mounting block (2) is fixedly connected to a guide plate (35).

2. The tunnel anchor with a pull-out resistance enhancement structure according to claim 1, characterized in that: The positioning assembly includes a round block (41), and an arc-shaped groove (401) is formed on the lower surface of the guide plate (35).

3. The tunnel anchor with a pull-out resistance enhancement structure according to claim 1, characterized in that: The discharge assembly comprises a discharge hole (502), a discharge port (501) is formed on the outer wall of the mounting block (2), a discharge pipe (52) is fixedly connected to the inner wall of the discharge hole (502), a straight rod (51) is fixedly connected to the front surface of the discharge pipe (52), a discharge pipe (54) is passed through and fixedly connected to the front surface of the straight rod (51), and a through rod (53) is fixedly connected to the rear surface of the discharge pipe (54).

4. The tunnel anchor with a pull-out resistance enhancement structure according to claim 1, characterized in that: The moving block (32) penetrates and is slidably connected to the left surface of the mounting block (2), and the right end of the fixing plate (34) is configured to be conical.

5. The tunnel anchor with a pull-out resistance enhancement structure according to claim 1, characterized in that: The fixed plate (34) penetrates and slides on the right surface of the guide plate (35), and the fixed plate (34) and the guide plate (35) are both arranged in an inclined shape.

6. The tunnel anchor with a pull-out resistance enhancement structure according to claim 2, characterized in that: The round block (41) is slidably connected to the inner wall of the arc-shaped groove (401), and the arc-shaped groove (401) is configured to be arc-shaped.

7. The tunnel anchor with a pull-out resistance enhancement structure according to claim 3, characterized in that: The discharge hole (502) is provided on the outer wall of the anchor rod body (1).

8. The tunnel anchor with a pull-out resistance enhancement structure according to claim 3, characterized in that: The straight rod (51) is connected to the discharge pipe (52), the through rod (53) is connected to the discharge pipe (54), and the discharge pipe (54) is fixedly connected to the inner wall of the discharge hole (502).

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