A type of slope protection anchor for bridge and tunnel construction projects with good protection

Abstract

The utility model discloses a slope protection anchor rod for bridge and tunnel construction engineering with good protection, which relates to the technical field of anchor rod equipment, including a protective plate, a threaded sleeve is rotatably connected to the upper surface of the protective plate, an anchor rod body is slidably connected inside the protective plate, a threaded groove is provided on the outer surface of the anchor rod body, the inner wall of the threaded sleeve is threadedly connected to the inner wall of the threaded groove, a protective mechanism is arranged on the upper surface of the anchor rod body, and a conical head is fixedly connected to the bottom surface of the anchor rod body. It can automatically cover the inner wall of the anchor rod body by setting the protective mechanism, and when the anchor rod body needs to be grouted, the protective mechanism is pushed open by pushing the pipe to insert the inner part of the anchor rod body for grouting, and then the protective mechanism can automatically close the hole after the pipe is pulled out to prevent external stones and other debris from falling into the inner part of the anchor rod body and causing blockage, thereby improving the practicality of the slope protection anchor rod for bridge and tunnel construction engineering.

Description

Technical Field

[0001] The utility model relates to the technical field of anchor rod equipment, in particular to a slope protection anchor rod for bridge and tunnel construction engineering with good protective performance. Background Art

[0002] Anchor bolts are the most basic component of tunnel support in modern coal mines. They reinforce the surrounding rock of the tunnel so that the surrounding rock can support itself. Anchor bolts are not only used in mines, but also in engineering technology to reinforce the main body of slopes, tunnels, and dams. In tunnel construction, anchor bolt support is mainly used as advance support in tunnel construction.

[0003] According to the Chinese patent application number 202222973026.7, a slope anchor rod with good protection for bridge and tunnel engineering is disclosed. It includes an outer rod, the inner wall of the outer rod is provided with an inner groove, the inner wall of the inner groove is threadedly connected with a threaded wall, the inner wall of the threaded wall is fixedly connected with an inner rod, the lower surface of the inner rod is fixedly connected with a positioning cone, the outer wall of the positioning cone is penetrated with a first slurry outlet, and the outer wall of the inner rod is penetrated with a second slurry outlet.

[0004] The above scheme is adopted to prevent the risk of the device falling off and enhance the protectiveness of the device. However, the above scheme still has certain limitations in actual use. In the above scheme, the inner rod is fixed in the mountain body, and the slurry pipe is inserted into the slurry inlet. The slurry flows out through the first slurry outlet and the second slurry outlet and is injected into the rock mass. However, there is no protection around the slurry inlet in the above scheme. Therefore, when in use, the surrounding gravel can easily enter the interior of the slurry inlet and block the slurry outlet, so that the slurry cannot flow into the rock mass, reducing safety. To this end, we provide a slope protection anchor rod with good protectiveness for bridge and tunnel construction projects to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to make up for the deficiencies of the prior art and to provide a slope protection anchor rod for bridge and tunnel construction engineering with good protective performance.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a slope protection anchor rod for bridge and tunnel construction projects with good protection, comprising a protective plate, a threaded sleeve is rotatably connected to the upper surface of the protective plate, an anchor rod body is slidably connected to the inside of the protective plate, a threaded groove is provided on the outer surface of the anchor rod body, the inner wall of the threaded sleeve is threadedly connected to the inner wall of the threaded groove, a protective mechanism is arranged on the upper surface of the anchor rod body, and a conical head is fixedly connected to the bottom surface of the anchor rod body.

[0007] Furthermore, the outer surface of the anchor body is provided with four groups of first grouting holes, the inner wall of the conical head is provided with two symmetrical second grouting holes, the inner walls of the four groups of the first grouting holes are fixedly connected with a first filter, and the inner walls of the two second grouting holes are fixedly connected with a second filter.

[0008] Furthermore, the outer surface of the protective plate is fixedly connected with four fixing frames, the outer surfaces of the four fixing frames are each installed with four conical bolts, and the outer surface of the protective plate is fixedly connected with four circular array grids.

[0009] Furthermore, the protection mechanism includes four fixed blocks and four T-shaped slots, the outer surfaces of the four fixed blocks are fixedly connected to the upper surface of the protection plate, and the inner walls of the four T-shaped slots are opened on the inner wall of the anchor rod body.

[0010] Furthermore, the outer surfaces of the four fixing blocks are hinged with sealing plates, and the bottom surfaces of the four sealing plates are fixedly connected with second hinge blocks.

[0011] Furthermore, the inner walls of the four T-shaped slots are slidably connected to sliders, the inner walls of the four sliders are fixedly connected to elastic components, and one end of the elastic component away from the outer surface of the slider is fixedly connected to the inner wall of the T-shaped slot.

[0012] Furthermore, the outer surfaces of the four sliding blocks are fixedly connected to the first hinge blocks, the outer surfaces of the four first hinge blocks are hinged to hinge plates, and one end of the hinge plate away from the outer surface of the first hinge block is hinged to the outer surface of the second hinge block.

[0013] Compared with the prior art, the slope protection anchor rod for bridge and tunnel construction engineering with good protection has the following beneficial effects:

[0014] The utility model can automatically cover the inner wall of the anchor rod body by arranging the protective mechanism. When grouting is required for the anchor rod body, the pipe is pushed to push the protective mechanism open and insert it into the interior of the anchor rod body for grouting. Afterwards, after the pipe is pulled out, the protective mechanism can automatically close the hole to prevent external stones and other debris from falling into the interior of the anchor rod body and causing blockage, thereby improving the practicability of the slope protection anchor rod for bridge and tunnel construction projects.

[0015] The utility model can shield the first grouting hole and the second grouting hole by arranging the first filter screen and the second filter screen, thereby preventing the broken stones inside the rock body from entering the inside of the anchor rod body and causing blockage, thereby ensuring the cleanliness of the inside of the anchor rod body, thereby stably allowing the slurry to be injected into the rock body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the protection mechanism and anchor rod body of the utility model;

[0019] Figure 4 It is a schematic diagram of the internal structure of the protective mechanism of the utility model.

[0020] In the figure: 1. protective plate; 2. threaded sleeve; 3. anchor rod body; 4. threaded groove; 5. protective mechanism; 501. fixed block; 502. sealing plate; 503. T-shaped slide groove; 504. slider; 505. elastic component; 506. hinge plate; 507. first hinge block; 508. second hinge block; 6. conical head; 7. first grouting hole; 8. second grouting hole; 9. fixing frame; 10. conical bolt; 11. grid; 12. first filter screen; 13. second filter screen. DETAILED DESCRIPTION

[0021] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0022] The present embodiment provides a slope protection anchor rod for bridge and tunnel construction projects with good protection. The device is used to protect the anchor rod during its use. By setting up the protection mechanism 5, the inner wall of the anchor rod body 3 can be automatically covered. When it is necessary to grout the anchor rod body 3, the protection mechanism 5 is pushed open by the pipe and inserted into the interior of the anchor rod body 3 for grouting. Afterwards, after the pipe is pulled out, the protection mechanism 5 can automatically close the hole to prevent external stones and other debris from falling into the interior of the anchor rod body 3 and causing blockage, thereby improving the practicability of the slope protection anchor rod for bridge and tunnel construction projects.

[0023] See also Figure 1 to Figure 4 A slope protection anchor rod for bridge and tunnel construction projects with good protective performance includes a protective plate 1, a threaded sleeve 2 is rotatably connected to the upper surface of the protective plate 1, an anchor rod body 3 is slidably connected inside the protective plate 1, a threaded groove 4 is opened on the outer surface of the anchor rod body 3, and the inner wall of the threaded sleeve 2 is threadedly connected to the inner wall of the threaded groove 4.

[0024] In this embodiment, the threaded sleeve 2 is manually rotated, and the threaded sleeve 2 cooperates with the threaded groove 4 to drive the anchor body 3 and the conical head 6 to move up and down, and the surface of the threaded sleeve 2 is provided with anti-slip grooves, so that it can rotate stably.

[0025] A protection mechanism 5 is provided on the upper surface of the anchor rod body 3 .

[0026] See also Figure 1, Figure 3 , Figure 4 The protection mechanism 5 includes four fixed blocks 501 and four T-shaped slots 503 . The outer surfaces of the four fixed blocks 501 are fixedly connected to the upper surface of the protection plate 1 , and the inner walls of the four T-shaped slots 503 are opened on the inner wall of the anchor rod body 3 .

[0027] The outer surfaces of the four fixed blocks 501 are hinged with sealing plates 502, and the bottom surfaces of the four sealing plates 502 are fixedly connected with second hinge blocks 508. The four sealing plates 502 can seal the hole of the anchor rod body 3, thereby preventing external stones and other debris from falling into the interior of the anchor rod body 3 and causing blockage.

[0028] The inner walls of the four T-shaped slide grooves 503 are slidably connected with sliders 504, and the T-shaped slide grooves 503 can guide the movement of the sliders 504 so that the sliders 504 can move up and down stably. The inner walls of the four sliders 504 are fixedly connected with elastic components 505, and one end of the elastic component 505 away from the outer surface of the slider 504 is fixedly connected to the inner wall of the T-shaped slide groove 503.

[0029] In this embodiment, the elastic component 505 is in a pushing state, at which time the elastic component 505 can push the slider 504 to move the top of the inner wall of the T-shaped slide groove 503. At this time, under the hinge of the hinge plate 506, the first hinge block 507, and the second hinge block 508, the sealing plate 502 is driven to rotate upward until the sealing plate 502 is in a horizontal state to close the hole of the anchor rod body 3.

[0030] The outer surfaces of the four sliders 504 are fixedly connected to the first hinge blocks 507 , the outer surfaces of the four first hinge blocks 507 are hinged to the hinge plates 506 , and one end of the hinge plate 506 away from the outer surface of the first hinge block 507 is hinged to the outer surface of the second hinge block 508 .

[0031] When the pipeline presses the sealing plate 502, the sealing plate 502 rotates downward under the hinge of the fixed block 501. While rotating, the sealing plate 502 can push the slider 504 to move downward through the hinge of the first hinge block 507, the second hinge block 508, and the hinge plate 506, and squeeze the elastic component 505 while the slider 504 moves.

[0032] A conical head 6 is fixedly connected to the bottom surface of the anchor rod body 3 .

[0033] Four groups of first grouting holes 7 are provided on the outer surface of the anchor body 3, and two symmetrical second grouting holes 8 are provided on the inner wall of the conical head 6. The inner walls of the four groups of first grouting holes 7 are fixedly connected with a first filter screen 12, and the inner walls of the two second grouting holes 8 are fixedly connected with a second filter screen 13.

[0034] Under the action of the first filter 12 and the second filter 13, the holes produced by the first grouting hole 7 and the second grouting hole 8 can be blocked, thereby preventing the gravel inside the rock mass from entering the anchor body 3 and causing blockage, thereby ensuring the cleanliness of the inside of the anchor body 3 and allowing the slurry to be injected into the rock mass.

[0035] The outer surface of the protective plate 1 is fixedly connected with four fixing frames 9, and the outer surfaces of the four fixing frames 9 are respectively installed with four conical bolts 10. After the four conical bolts 10 are threadedly rotated and penetrate the fixing frames 9 and penetrate into the ground, the protective plate 1 can be fixed.

[0036] The outer surface of the protective plate 1 is fixedly connected with four circular array grids 11. When the vegetation layer on the slope can be wrapped around the grids 11, a natural reinforcement effect is achieved, thereby improving the protection of the anchor body 3 and improving the stability of the anchor body 3.

[0037] Working principle: When using this embodiment, first, place the protective plate 1 at the designated position, then thread the conical bolt 10 through the fixing frame 9 and insert it into the ground to fix the protective plate 1, then manually rotate the threaded sleeve 2, at which time the threaded sleeve 2 cooperates with the threaded connection of the threaded groove 4 to drive the anchor rod body 3 and the conical head 6 to move up and down, and then the anchor rod body 3 and the conical head 6 are inserted into the rock mass under their rotation to fix the anchor rod body 3 and the conical head 6, and finally, press the sealing plate 502 on the grouting pipe, and at this time the sealing plate 502 rotates downward under the hinge of the fixing block 501, and while rotating, The sealing plate 502 can push the slider 504 to move downward through the hinge of the first hinge block 507, the second hinge block 508 and the hinge plate 506. When the slider 504 moves, it squeezes the elastic component 505. After that, after the grouting is completed, when the pipe is pulled out of the interior of the anchor body 3, the elastic component 505 is released from the squeeze and pushes the slider 504 to move upward to the other side of the T-shaped slide groove 503. At this time, the movement of the slider 504 drives the sealing plate 502 to rotate upward until it is horizontal. At this time, the four sealing plates 502 can close the inner wall opening of the anchor body 3, thereby completing the automatic sealing.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A slope protection anchor rod for bridge and tunnel construction engineering with good protective performance, comprising a protective plate (1), characterized in that: The upper surface of the protective plate (1) is rotatably connected to a threaded sleeve (2), the interior of the protective plate (1) is slidably connected to an anchor rod body (3), the outer surface of the anchor rod body (3) is provided with a threaded groove (4), the inner wall of the threaded sleeve (2) is threadedly connected to the inner wall of the threaded groove (4), the upper surface of the anchor rod body (3) is provided with a protective mechanism (5), and the bottom surface of the anchor rod body (3) is fixedly connected to a conical head (6).

2. The slope protection anchor rod for bridge and tunnel construction engineering with good protection according to claim 1 is characterized by: The outer surface of the anchor rod body (3) is provided with four groups of first grouting holes (7), the inner wall of the conical head (6) is provided with two symmetrical second grouting holes (8), the inner walls of the four groups of the first grouting holes (7) are fixedly connected to a first filter screen (12), and the inner walls of the two second grouting holes (8) are fixedly connected to a second filter screen (13).

3. The slope protection anchor rod for bridge and tunnel construction engineering with good protection according to claim 1 is characterized by: Four fixing frames (9) are fixedly connected to the outer surface of the protective plate (1), and four conical bolts (10) are installed on the outer surface of each of the four fixing frames (9). Four circular array grids (11) are fixedly connected to the outer surface of the protective plate (1).

4. The slope protection anchor rod for bridge and tunnel construction engineering with good protection according to claim 1 is characterized by: The protection mechanism (5) comprises four fixed blocks (501) and four T-shaped slide grooves (503), the outer surfaces of the four fixed blocks (501) are fixedly connected to the upper surface of the protection plate (1), and the inner walls of the four T-shaped slide grooves (503) are opened on the inner wall of the anchor rod body (3).

5. The slope protection anchor rod for bridge and tunnel construction engineering with good protection according to claim 4 is characterized by: The outer surfaces of the four fixing blocks (501) are all hingedly connected to sealing plates (502), and the bottom surfaces of the four sealing plates (502) are all fixedly connected to second hinge blocks (508).

6. The slope protection anchor rod for bridge and tunnel construction engineering with good protection according to claim 4 is characterized by: The inner walls of the four T-shaped slide grooves (503) are all slidably connected to sliders (504), the inner walls of the four sliders (504) are all fixedly connected to elastic components (505), and one end of the elastic component (505) away from the outer surface of the slider (504) is fixedly connected to the inner wall of the T-shaped slide groove (503).

7. The slope protection anchor rod for bridge and tunnel construction engineering with good protection according to claim 6 is characterized by: The outer surfaces of the four sliding blocks (504) are all fixedly connected to a first hinge block (507), the outer surfaces of the four first hinge blocks (507) are all hinged to a hinge plate (506), and one end of the hinge plate (506) away from the outer surface of the first hinge block (507) is hinged to the outer surface of the second hinge block (508).

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