Grouting anchor rod

Abstract

The grouting anchor rod comprises an anchor rod body, a drill bit and a first slurry leakage opening, a protective sleeve is arranged over the drill bit, a connecting block is fixedly installed on the inner side of the protective sleeve, a lower barb is fixedly installed on the outer side of the protective sleeve, a second slurry leakage opening is formed in the anchor rod body, and a lower barb is fixedly installed on the outer side of the second slurry leakage opening. A protective sleeve is arranged on the outer side of the anchor rod body, an upper barb is arranged over the protective sleeve, the outer side of the anchor rod body is sleeved with a leaking stoppage device, a base plate is arranged over the leaking stoppage device, a screw block is arranged over the base plate, and an external connector is fixedly installed at the upper end of the anchor rod body. The position of the anchor rod can be fixed through the lower barbs and the upper barbs, when the anchor rod is installed in a rock mass above or obliquely above, the problem of falling or shifting cannot occur, construction efficiency is guaranteed, the protective sleeve is arranged on the outer side of the second slurry leakage opening, the situation that the second slurry leakage opening is blocked can be avoided, and the safety of construction is guaranteed. And normal completion of grouting operation is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of grouting anchor rods, in particular to a grouting anchor rod. Background Art

[0002] Anchor rods are the most basic component of tunnel support in contemporary coal mines. Anchor rods reinforce the surrounding rock of the tunnel so that the surrounding rock can support itself. Anchor rods are not only used in mines, but also in engineering technology to reinforce the main body of slopes, tunnels, dams, etc. Anchor rods are tensile components that penetrate deep into the strata. One end of the anchor rod is connected to the engineering structure, and the other end is deep in the stratum. The entire anchor rod is divided into a free section and an anchoring section. The free section refers to the area that transmits the tension at the anchor rod head to the anchor body. Its function is to apply prestress to the anchor rod.

[0003] The Chinese patent publication number is: CN215633062U discloses a self-drilling hollow grouting anchor. The application states: "At present, due to the imperfect construction process of domestic anchor rods, the quality of the construction process cannot be well guaranteed. During the grouting process of the self-drilling hollow anchor rod, there is no sealing device, which leads to leakage, serious loss of grouting pressure, and the cement slurry cannot be well filled into the rock cracks, thereby greatly reducing the quality of the project." Although the application solves this problem, it has the following defects:

[0004] The above-mentioned prior art solutions have the following defects: although the above-mentioned empty grouting anchor solves the problem of no sealing device, the anchor rod cannot be stably fixed in the rock mass before the slurry solidifies, so that the anchor rod may fall or shift when installed in the rock mass above or obliquely above, which affects the reinforcement effect of the anchor rod and greatly reduces the construction efficiency. Therefore, we propose a new type of grouting anchor rod. Utility Model Content

[0005] The utility model provides a grouting anchor rod to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A grouting anchor comprises an anchor body, a drill bit is fixedly mounted on the lower end of the anchor body, a first grouting opening is provided on the outer side of the drill bit, a protective sleeve is arranged directly above the drill bit, a connecting block is fixedly mounted on the inner side of the protective sleeve, a lower barb is fixedly mounted on the outer side of the protective sleeve, a second grouting opening is provided inside the anchor body, an upper barb is arranged directly above the protective sleeve, a leak plugger is provided on the outer side of the anchor body, a pad is arranged directly above the leak plugger, a screw block is arranged directly above the pad, and an external connector is fixedly mounted on the upper end of the anchor body.

[0008] As a further improvement of the technical solution: the drill bit is made of an integrated stainless steel material.

[0009] As a further improvement of the technical solution: the connecting block is located between the protective sleeve and the anchor body, wherein the second grout leakage port is arranged on the inner side of the protective sleeve.

[0010] As a further improvement of the technical solution: the lower barb and the upper barb are in a V-shape as a whole.

[0011] As a further improvement of the technical solution: the pad is located between the screw block and the leak stopper.

[0012] As a further improvement of the technical solution: the screw block is threadedly connected to the anchor rod body.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The lower barb and the upper barb can fix the position of the anchor body. When the anchor body is installed in the rock mass above or obliquely above, it will not fall or shift, ensuring the efficiency of the construction;

[0015] 2. A protective cover is provided on the outside of the second grouting opening, which can prevent the second grouting opening from being blocked during the embedding process of the anchor rod body, thereby ensuring that the grouting operation can be completed normally.

[0016] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the utility model with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the protective cover structure of the utility model;

[0020] Figure 3 It is a schematic structural diagram of the second slurry leakage port of the utility model.

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] 1. Anchor body; 2. Drill bit; 3. First leakage port; 4. Protective sleeve; 5. Connecting block; 6. Lower barb; 7. Second leakage port; 8. Upper barb; 9. Leak stopper; 10. Pad; 11. Screw block; 12. External connector. DETAILED DESCRIPTION

[0023] 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. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0024] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] See also Figures 1 to 3 In an embodiment of the utility model, a grouting anchor comprises an anchor body 1, a drill bit 2 is fixedly mounted on the lower end of the anchor body 1, a first grouting opening 3 is provided on the outer side of the drill bit 2, a protective sleeve 4 is arranged directly above the drill bit 2, a connecting block 5 is fixedly mounted on the inner side of the protective sleeve 4, a lower barb 6 is fixedly mounted on the outer side of the protective sleeve 4, a second grouting opening 7 is provided inside the anchor body 1, an upper barb 8 is arranged directly above the protective sleeve 4, a leak plugging device 9 is sleeved on the outer side of the anchor body 1, a pad 10 is arranged directly above the leak plugging device 9, a screw block 11 is arranged directly above the pad 10, and an external connector 12 is fixedly mounted on the upper end of the anchor body 1.

[0027] See also Figure 1-2The drill bit 2 is made of an integrated stainless steel material. The drill bit 2 made of an integrated stainless steel material has the characteristic of high hardness, which can facilitate drilling operations.

[0028] See also Figure 1-3 The connecting block 5 is located between the protective sleeve 4 and the anchor body 1, wherein the second grout leakage port 7 is arranged inside the protective sleeve 4. The second grout leakage port 7 is protected by the protective sleeve 4, which can reduce the possibility of the second grout leakage port 7 being blocked.

[0029] See also Figure 1-3 The lower barb 6 and the upper barb 8 are V-shaped as a whole. The special shapes of the lower barb 6 and the upper barb 8 make it easy to insert the anchor body 1 but difficult to remove it. At the same time, the lower barb 6 and the upper barb 8 can fix the position of the anchor body 1 after insertion.

[0030] See also Figure 1-2 The backing plate 10 is located between the screw block 11 and the leak stopper 9. The backing plate 10 and the screw block 11 cooperate to fix the position of the leak stopper 9, which can reduce the occurrence of liquid leakage in the anchor body 1 during the grouting process.

[0031] See also Figure 1-3 The screw block 11 is threadedly connected to the anchor body 1. The plugging device 9 can be fixed in position through the screw block 11, which can facilitate fixing the plugging device 9 to a specified position, completing the plugging operation of the anchor body 1 and avoiding the overflow of the grouting liquid.

[0032] The working principle of the utility model is: when using the anchor rod, directly use the external connector 12 to connect the external power mechanism, then align the drill bit 2 with the position that needs to be reinforced, start the external power mechanism, so that the anchor rod body 1 is completely inserted into the rock and soil. After the anchor rod body enters the rock and soil, the lower barb 6 and the upper barb 8 can fix the position of the anchor rod body 1. When the anchor rod body is installed in the rock mass above or obliquely above, there will be no problem of falling or shifting. When grouting the anchor rod body 1, the grouting liquid will be discharged from the first leakage port 3 and the second leakage port 7, wherein a protective cover 4 is provided on the outer side of the second leakage port 7, which can avoid the second leakage port 7 from being blocked during the embedding process of the anchor rod body 1, thereby ensuring that the grouting operation can be completed normally.

[0033] The above description is only a preferred embodiment of the utility model and does not impose any form of limitation on the utility model. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A grouting anchor, characterized in that: The invention comprises an anchor rod body (1), a drill bit (2) is fixedly mounted at the lower end of the anchor rod body (1), a first grout leakage opening (3) is provided on the outer side of the drill bit (2), a protective sleeve (4) is arranged directly above the drill bit (2), a connecting block (5) is fixedly mounted on the inner side of the protective sleeve (4), a lower barb (6) is fixedly mounted on the outer side of the protective sleeve (4), a second grout leakage opening (7) is provided inside the anchor rod body (1), an upper barb (8) is arranged directly above the protective sleeve (4), a leak stopper (9) is sleeved on the outer side of the anchor rod body (1), a pad (10) is arranged directly above the leak stopper (9), a screw block (11) is arranged directly above the pad (10), and an external connector (12) is fixedly mounted on the upper end of the anchor rod body (1).

2. A grouting anchor rod according to claim 1, characterized in that: The drill bit (2) is made of an integrated stainless steel material.

3. A grouting anchor according to claim 1, characterized in that: The connecting block (5) is located between the protective sleeve (4) and the anchor rod body (1), wherein the second grout leakage port (7) is arranged on the inner side of the protective sleeve (4).

4. A grouting anchor rod according to claim 1, characterized in that: The lower barb (6) and the upper barb (8) are in a V-shape as a whole.

5. A grouting anchor according to claim 1, characterized in that: The pad (10) is located between the screw block (11) and the leak stopper (9).

6. A grouting anchor rod according to claim 1, characterized in that: The screw block (11) is threadedly connected to the anchor rod body (1).

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