Grouting type self-expansion anchor rod
By setting up structures such as slurry holes, drill bits, stop plates, connecting rods and shielding columns on the anchor body, the problem of clogging of slurry holes when the anchor rod is placed in the hole is solved, the grouting efficiency and anchoring effect are improved, and the stability and safety of geotechnical engineering are ensured.
Patent Information
- Application Number
- CN202421672356.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-07-16
AI Technical Summary
In the prior art, when the anchor rod is placed in the drilled hole, it is prone to blockage of the slurry outlet hole due to contact with the fine particles of the rock and soil body, which affects the grouting efficiency and anchoring effect, and thus affects the stability and safety of the geotechnical engineering.
A grouting-type self-expanding anchor rod is designed, and a structure is equipped with a slurry hole, a drill bit, a stopper, a connecting rod, a blocking column and an elastic ring on the anchor rod body. The slurry hole is blocked through the elastic ring to avoid blocking of fine particles and ensure the smooth progress of the grouting process.
The grouting efficiency and anchoring effect are significantly improved, ensuring the stability and safety of the rock and soil body.
Smart Images
Figure CN223062475U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of anchor bolts, in particular to a grouting type self-expanding anchor bolt. Background Art
[0002] The self-expanding anchor bolt usually consists of a hollow rod body, an expansion device, barbs, etc. The working principle of this kind of anchor bolt is that when the slurry is injected into the surrounding rock and soil mass through the hollow rod body, the expansion device expands outwards under the action of pressure, so that the barbs open and are firmly anchored in the rock and soil mass, and the grouting can fill the gap between the drill hole and the anchor bolt, as well as the cracks and pores of the surrounding rock and soil mass, improving the overall stability of the rock and soil mass.
[0003] In the prior art, some anchor bolts are usually placed into the drilled holes and then grouting work is carried out. However, during the process of placing the anchor bolt into the hole, because the drill bit is placed first and then contacts the rock and soil mass, the fine particles of the rock and soil mass in the hole will be loosened and then fall off, and then the slurry outlet holes that enter together with the drill bit will be blocked, which will cause the anchoring effect to be significantly reduced, and further affect the stability and safety of geotechnical engineering. Therefore, in view of the above deficiencies, a grouting type self-expanding anchor bolt is proposed. Content of the Utility Model
[0004] The purpose of the utility model is to solve the defects existing in the prior art, and to propose a grouting type self-expanding anchor bolt, aiming to improve the problem that the slurry outlet holes are blocked by fine particles when the anchor bolt is placed into the drilled hole in the prior art.
[0005] To achieve the above purpose, the utility model provides the following technical solution: a grouting type self-expanding anchor bolt, including an anchor bolt body. A plurality of slurry outlet holes are opened at the left end of the outer part of the anchor bolt body. The left end of the slurry outlet hole is fixedly connected with a drill bit. A retaining disc is threadedly connected to the right end of the outer part of the anchor bolt body. A plurality of fixing components are threadedly connected inside the retaining disc. A grouting hole is opened at the right end of the anchor bolt body. A plurality of connecting rods are fixedly connected to the left end of the retaining disc. The left ends of the plurality of connecting rods are fixedly connected with a shielding column. A tensioning ring is arranged inside the shielding column.
[0006] Further, the fixing component includes a plurality of bolts, and the outer part of the bolts is threadedly connected inside the retaining disc.
[0007] Further, the left end of the shielding column is in contact with the right end of the drill bit.
[0008] Further, the inside of the tensioning ring is in contact with the left side of the outer part of the anchor bolt body.
[0009] Further, the inside of the shielding column is threadedly connected to the outer part of the anchor bolt body.
[0010] The utility model has the following beneficial effects:
[0011] In the utility model, the slurry outlet holes are blocked by the tightening rings, so that when the anchor rod body is placed into the hole, it will not directly contact with fine particles due to the lack of blockage of the slurry outlet holes, thereby avoiding the situation that the slurry outlet holes are blocked, which can significantly improve the grouting efficiency and the anchoring effect. Description of the Drawings
[0012] Figure 1 is a perspective view of a grouting type self-expanding anchor rod proposed by the utility model;
[0013] Figure 2 is a schematic structural view of the connecting rod of a grouting type self-expanding anchor rod proposed by the utility model;
[0014] Figure 3 is a schematic structural view of the shielding column of a grouting type self-expanding anchor rod proposed by the utility model;
[0015] Figure 4 is Figure 2 the enlarged view of part A in
[0016] Legend:
[0017] 1. Anchor rod body; 2. Slurry outlet hole; 3. Drill bit; 4. Retaining disc; 5. Bolt; 6. Grouting hole; 7. Connecting rod; 8. Shielding column; 9. Tightening ring. Specific Embodiments
[0018] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the utility model.
[0019] Refer to Figure 1 - Figure 3, an embodiment provided by the present utility model: a grouting type self - expanding anchor rod, including an anchor rod body 1 which is the core part of the entire anchor rod system, made of high - strength metal material to ensure sufficient bearing capacity and durability. Multiple slurry outlet holes 2 are opened at the left end of the outer part of the anchor rod body 1. These holes are used to evenly inject the slurry into the surrounding rock and soil mass during the grouting process. A drill bit 3 is fixedly connected to the left end of the slurry outlet hole 2, which is used to guide the anchor rod into the pre - drilled hole during the installation process. A retaining disc 4 is threadedly connected to the right end of the outer part of the anchor rod body 1, which is used to control the subsequent components and provide a fixed space. A plurality of fixing components are threadedly connected inside the retaining disc 4. The fixing components include a plurality of bolts 5. The outer thread of the bolt 5 is threadedly connected inside the retaining disc 4 to fix the retaining disc 4 on the rock and soil after the grouting is completed. A grouting hole 6 is opened at the right end of the anchor rod body 1 for injecting slurry inward after the anchor rod is installed. A plurality of connecting rods 7 are fixedly connected to the left end of the retaining disc 4. These rods are used to transmit force. A shielding column 8 is fixedly connected to the left end of the plurality of connecting rods 7, which is used to protect the slurry outlet holes 2 from being blocked during the process of inserting the anchor rod. The inside of the shielding column 8 is threadedly connected to the outer part of the anchor rod body 1. The left end of the shielding column 8 is in contact with the right end of the drill bit 3. An elastic ring 9 is arranged inside the shielding column 8. The inside of the elastic ring 9 is in contact with the left side of the outer part of the anchor rod body 1 to assist the shielding column 8 in shielding or exposing the slurry outlet holes 2. It realizes protecting the slurry outlet holes 2 from being blocked by rock and soil particles when inserting the anchor rod, and exposing the slurry outlet holes 2 at an appropriate time for grouting, thereby improving the installation efficiency and grouting effect of the anchor rod.
[0020] Working principle: First, when inserting the entire rod, first turn the retaining disc 4. Under the rotation of the retaining disc 4, the connecting rod 7 is driven to rotate. Then, under the rotation of the connecting rod 7, the shielding column 8 is driven to rotate on the outer part of the anchor rod body 1. Under the movement of the shielding column 8, the elastic ring 9 is driven to block the slurry outlet holes 2. At this time, when the rod is inserted into the drilled hole, it will not happen that the fine particles in the hole fall into the inside of the slurry outlet holes 2 and cause the slurry outlet holes 2 to be blocked. After the rod is placed, turn the retaining disc 4 in the reverse direction to make the shielding column 8 move in the reverse direction, and then drive the elastic ring 9 and the slurry outlet holes 2 to separate. At this time, the grouting work can be carried out. After the grouting is completed, insert the bolts 5 into the retaining disc 4 in sequence to fix the retaining disc 4 on the rock and soil.
[0021] Finally, it should be noted that the above - mentioned are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A grouting type self - expanding bolt, comprising a bolt body (1), characterized in that: A plurality of slurry outlet holes (2) are formed in the outer left end of the anchor rod body (1). A drill bit (3) is fixedly connected to the left end of the slurry outlet hole (2). A retaining disc (4) is threadedly connected to the outer right end of the anchor rod body (1). A plurality of fixing components are threadedly connected inside the retaining disc (4). A grouting hole (6) is formed in the right end of the anchor rod body (1). A plurality of connecting rods (7) are fixedly connected to the left end of the retaining disc (4). A plurality of connecting rods (7) are fixedly connected to the left end of the shielding column (8). A tensioning ring (9) is arranged inside the shielding column (8).
2. The grouting type self - expanding bolt according to claim 1, characterized in that: The fixing component includes a plurality of bolts (5), and the outer part of the bolt (5) is threadedly connected inside the retaining disc (4).
3. The grouting type self-expanding bolt according to claim 1, characterized in that: The left end of the shielding column (8) is in contact with the right end of the drill bit (3).
4. The grouting type self-expanding anchor rod according to claim 1, characterized in that: The inside of the tensioning ring (9) is in contact with the outer left side of the anchor rod body (1).
5. The grouting type self-expanding bolt according to claim 1, characterized in that: The inside of the shielding column (8) is threadedly connected to the outside of the anchor rod body (1).