Self-drilling type hollow grouting slope supporting anchor rod

Abstract

The utility model discloses a self-drilling type hollow grouting slope supporting anchor rod which comprises a hollow anchor rod body, a multidirectional drill bit is fixedly connected to the end of the hollow anchor rod body in a sleeved mode, and a middle connecting buffering mechanism comprises a center installation sleeve, a connecting ring groove, an expansion rubber ring, a supporting sleeve and a reinforcing side strip. A center installation sleeve is connected to a connector of the outer side of the hollow anchor rod body in a sleeved mode, connecting ring grooves are formed in the edge portions of the two ends of the center installation sleeve respectively, and expansion rubber rings adhere to the interiors of the connecting ring grooves. The side face of the expansion rubber ring is limited and supported through the reinforcing side strips, so that the expansion rubber ring can be directionally expanded after being extruded, the use process of the slope supporting anchor rod is optimized, the phenomenon that the slope supporting anchor rod is bent in the drilling process is prevented, and the installation stability and use convenience of the slope supporting anchor rod are improved.

Description

Technical Field

[0001] This utility model relates to the field of slope support anchor technology, specifically a self-drilling hollow grouting slope support anchor. Background Technology

[0002] Slope support anchors are engineering structures that reinforce slopes by drilling holes into the soil and rock mass and installing rods (steel strands, steel bars, etc.). Their core principle is to connect potential sliding bodies with stable soil and rock mass through the interaction between the anchor and the soil and rock mass (such as friction and cohesion), thereby improving the overall stability of the slope. They are widely used in highway, railway, mining, water conservancy and other engineering fields.

[0003] However, due to the lack of corresponding auxiliary adjustment structures during the use of slope support anchors, the anchors tend to tilt after being inserted into the slope, causing the holes drilled from the anchors to bend, which in turn reduces the effectiveness and installation stability of the slope support anchors. Utility Model Content

[0004] This utility model provides a self-drilling hollow grouting slope support anchor, which can effectively solve the problem mentioned in the background art that the slope support anchor is prone to tilting after being inserted into the slope due to the lack of corresponding auxiliary adjustment structure, which makes the hole drilled by the slope support anchor prone to bending, thereby reducing the use effect and installation stability of the slope support anchor.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a self-drilling hollow grouting slope support anchor bolt, comprising a hollow anchor bolt body, wherein a multi-directional drill bit is fixedly sleeved at the end of the hollow anchor bolt body;

[0006] A central connecting buffer mechanism is provided on the outer side of the hollow anchor rod body;

[0007] The central connecting buffer mechanism includes a central mounting sleeve, a connecting ring groove, an expansion rubber ring, a supporting sleeve, and reinforcing side strips;

[0008] A central mounting sleeve is fitted onto the outer interface of the hollow anchor rod body. A connecting ring groove is provided at both ends of the central mounting sleeve. An expansion rubber ring is bonded inside the connecting ring groove. A support sleeve is fitted onto the middle of the outer side of the central mounting sleeve. Reinforcing side strips are fixedly connected at equal intervals along the circumferential direction on the outer side of the support sleeve.

[0009] Preferably, after the outer diameter of the expansion ring is compressed to its limit position, it is flush with the outer diameter of the central mounting sleeve, and the end of the reinforcing side strip is tightly fitted with the outer side of the expansion ring.

[0010] Preferably, an end interception and protection mechanism is provided at the outer tail end of the hollow anchor bolt body;

[0011] The end interception and protection mechanism includes a slurry stop plug, a limiting arc ring, a clamping sleeve, a sealing airbag, an inflation tube, and an overflow rectangular tube;

[0012] A grout stop plug is tightly fitted to the outer tail of the hollow anchor rod body. A limiting arc ring is tightly fitted to the outer side of the hollow anchor rod body corresponding to the grout stop plug. A compression sleeve is tightly fitted to the outer side of the hollow anchor rod body corresponding to the limiting arc ring. A sealing airbag is adhered to the edge of the limiting arc ring near the grout stop plug. An inflation tube is fixedly connected to the middle of the bottom surface of one side of the sealing airbag. An overflow rectangular tube is adhered to the middle of the top of the sealing airbag.

[0013] Preferably, the inflation tube penetrates the side of the limiting arc ring, the outer side of the sealing airbag is tightly fitted with the inner wall of the limiting arc ring, and the top outlet of the overflow rectangular tube is interconnected with the inner cavity of the sealing airbag.

[0014] Preferably, an auxiliary positioning mechanism is provided at the top outer side of the limiting arc ring;

[0015] The auxiliary positioning mechanism includes a connecting side plate, a connecting magnetic plate, a snap-fit ​​horizontal plate, a bubble level, and a protective side plate.

[0016] A connecting side plate is fixedly connected to the middle of the top of the outer side of the limiting arc ring. A connecting magnetic sheet is adsorbed on the middle of one side of the connecting side plate. A snap-fit ​​horizontal plate is fixedly connected to the middle of one side of the connecting magnetic sheet. A bubble level is glued to the middle of the top of the snap-fit ​​horizontal plate. Protective side plates are glued to the middle of both sides of the snap-fit ​​horizontal plate.

[0017] Preferably, the two bubble levels are arranged perpendicularly to each other on the top of the snap-fit ​​horizontal plate, and anti-slip textures are provided on both sides of the protective side plate.

[0018] Compared with the prior art, the advantages of this utility model are: the structure of this utility model is scientific and reasonable, and it is safe and convenient to use.

[0019] 1. A central connecting buffer mechanism is installed. A multi-directional drill bit rotates the slope at the front end of the hollow anchor bolt body. A central mounting sleeve connects two hollow anchor bolt bodies. An expansion ring is installed into the central mounting sleeve via a connecting groove. The interaction force between the compressed expansion ring and the inner wall of the borehole supports the side of the hollow anchor bolt body, ensuring it remains centered in the borehole after insertion. A supporting sleeve installs reinforcing side strips onto the outside of the central mounting sleeve, limiting and supporting the side of the expansion ring. This allows the expansion ring to expand directionally under pressure, optimizing the use of slope support anchor bolts, preventing bending during drilling, and improving the stability and ease of use of the slope support anchor bolt installation.

[0020] 2. An end-interception and protection mechanism was installed. A limiting arc-shaped ring was used to attach the grout-stopping plug to the outside of the hollow anchor rod body. Then, a clamping sleeve was used to press the outer side of the limiting arc-shaped ring, ensuring a tight fit between the grout-stopping plug and the end of the duct. Air was injected into the sealing airbag through an inflation tube, sealing the gap on the side of the limiting arc-shaped ring through the expanded airbag. During the grouting process, the position of the grout in the inner ring of the sealing airbag was observed through the clamping sleeve. This further optimized the use of the slope support anchor rod, ensuring sufficient grouting inside the duct and effectively preventing grout overflow from the end of the slope support anchor rod, thus improving the installation stability of the slope support anchor rod.

[0021] 3. An auxiliary positioning mechanism is set up. By connecting the side plates and connecting magnetic plates, each component is installed on the side of the limiting arc ring. The tilt direction of the slope support anchor is observed by the bubble level on the top of the snap-fit ​​horizontal plate to assist in the adjustment of the tilt direction of the slope support anchor. The side of the snap-fit ​​horizontal plate is protected by the protective side plate, which further expands the function of the slope support anchor and improves the ease of use of the slope support anchor. Attached Figure Description

[0022] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0023] In the attached diagram:

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the middle connecting buffer mechanism of this utility model;

[0026] Figure 3 This is a schematic diagram of the end-interception and protection mechanism of this utility model;

[0027] Figure 4 This is a schematic diagram of the auxiliary positioning mechanism of this utility model;

[0028] The diagram labels are: 1. Hollow anchor bolt body; 2. Multi-directional drill bit;

[0029] 3. Central connecting buffer mechanism; 301. Central mounting sleeve; 302. Connecting ring groove; 303. Expansion rubber ring; 304. Support sleeve; 305. Reinforcing side strip;

[0030] 4. End interception and protection mechanism; 401. Seal stop plug; 402. Limiting arc ring; 403. Compression sleeve; 404. Sealing airbag; 405. Inflatable tube; 406. Overflow rectangular tube;

[0031] 5. Auxiliary positioning mechanism; 501. Connecting side plate; 502. Connecting magnetic plate; 503. Snap-on horizontal plate; 504. Bubble level; 505. Protective side plate. Detailed Implementation

[0032] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0033] Example: Figure 1-4 As shown, this utility model provides a technical solution: a self-drilling hollow grouting slope support anchor rod, including a hollow anchor rod body 1, with a multi-directional drill bit 2 fixedly sleeved at the end of the hollow anchor rod body 1;

[0034] A central connecting buffer mechanism 3 is provided on the outer side of the hollow anchor bolt body 1;

[0035] The central connecting buffer mechanism 3 includes a central mounting sleeve 301, a connecting ring groove 302, an expansion rubber ring 303, a support sleeve 304, and a reinforcing side strip 305;

[0036] A central mounting sleeve 301 is fitted onto the outer interface of the hollow anchor bolt body 1. Both ends of the central mounting sleeve 301 have connecting annular grooves 302, and expansion rings 303 are bonded inside the connecting annular grooves 302. A support sleeve 304 is fitted onto the middle of the outer side of the central mounting sleeve 301. Reinforcing side strips 305 are evenly and uniformly fixed to the outer side of the support sleeve 304 along the circumferential direction. After the outer diameter of the expansion rings 303 is compressed to its limit, it is flush with the outer diameter of the central mounting sleeve 301. The ends of the reinforcing side strips 305 are tightly fitted to the outer side of the expansion rings 303. The front slope of the hollow anchor bolt body 1 is rotated using a multi-directional drill bit 2, and the two hollow anchor bolt bodies 1 are connected through the central mounting sleeves 301. The annular groove 302 installs the expansion ring 303 onto the central mounting sleeve 301. The interaction force between the compressed expansion ring 303 and the inner wall of the duct supports the side of the hollow anchor body 1, thus allowing the hollow anchor body 1 to remain in the center of the hole after being inserted into the duct. The supporting sleeve 304 installs the reinforcing side strip 305 onto the outside of the central mounting sleeve 301. The reinforcing side strip 305 provides limiting support for the side of the expansion ring 303, allowing the expansion ring 303 to expand in a directional manner after being compressed. This optimizes the use of the slope support anchor, prevents the slope support anchor from bending during drilling, and improves the stability and ease of use of the slope support anchor installation.

[0037] An end interception and protection mechanism 4 is provided at the outer tail end of the hollow anchor bolt body 1;

[0038] The end interception and protection mechanism 4 includes a slurry stop plug 401, a limiting arc ring 402, a clamping sleeve 403, a sealing airbag 404, an inflation tube 405, and an overflow rectangular tube 406.

[0039] A grout stop plug 401 is tightly fitted to the outer tail of the hollow anchor bolt body 1. A limiting arc ring 402 is tightly fitted to the outer side of the hollow anchor bolt body 1 corresponding to the grout stop plug 401. A compression sleeve 403 is tightly fitted to the outer side of the hollow anchor bolt body 1 corresponding to the limiting arc ring 402. A sealing airbag 404 is bonded to the side of the limiting arc ring 402 near the grout stop plug 401. An inflation tube 405 is fixedly connected to the middle of the bottom surface of one side of the sealing airbag 404. An overflow rectangular tube 406 is bonded to the middle of the top of the sealing airbag 404. The inflation tube 405 penetrates the side of the limiting arc ring 402. The outer side of the sealing airbag 404 is tightly fitted to the inner wall of the limiting arc ring 402. The top outlet of the overflow rectangular tube 406 is connected to the sealing airbag 404. The inner cavities are interconnected. The grout stop plug 401 is fitted onto the outside of the hollow anchor body 1 through the limiting arc ring 402. Then, the outer side of the limiting arc ring 402 is pressed by the clamping sleeve 403 to ensure that the grout stop plug 401 fits tightly with the end of the channel. Air is injected into the sealing airbag 404 through the air inflating tube 405 to seal the side gap of the limiting arc ring 402 through the expanded sealing airbag 404. During the grouting process, the position of the grout in the inner ring of the sealing airbag 404 is observed through the clamping sleeve 403. This further optimizes the use of the slope support anchor, ensures sufficient grouting inside the channel, effectively avoids the phenomenon of grout overflow at the end of the slope support anchor, and improves the installation stability of the slope support anchor.

[0040] An auxiliary positioning mechanism 5 is provided on the top outer side of the limiting arc ring 402;

[0041] The auxiliary positioning mechanism 5 includes a connecting side plate 501, a connecting magnetic plate 502, a snap-fit ​​horizontal plate 503, a bubble level 504, and a protective side plate 505;

[0042] A connecting side piece 501 is fixedly connected to the middle of the top of the outer side of the limiting arc ring 402. A connecting magnetic piece 502 is adsorbed onto the middle of one side of the connecting side piece 501. A snap-fit ​​horizontal plate 503 is fixedly connected to the middle of one side of the connecting magnetic piece 502. A bubble level 504 is glued to the middle of the top of the snap-fit ​​horizontal plate 503. Protective side plates 505 are glued to the middle of both sides of the snap-fit ​​horizontal plate 503. Two bubble levels 504 are arranged perpendicularly to each other on the top of the snap-fit ​​horizontal plate 503. The protective side plates 505 are located on both sides. All components are provided with anti-slip texture. By connecting the side plate 501 and the connecting magnetic plate 502, each component is installed on the side of the limiting arc ring 402. The tilt direction of the slope support anchor is observed by the bubble level 504 on the top of the snap-fit ​​horizontal plate 503, so as to assist in the adjustment of the tilt direction of the slope support anchor. The side of the snap-fit ​​horizontal plate 503 is protected by the protective side plate 505, which further expands the function of the slope support anchor and improves the ease of use of the slope support anchor.

[0043] The working principle and usage process of this utility model are as follows: In practical application, when it is necessary to protect the side of the hollow anchor body 1 during the insertion of slope support anchors, the multi-directional drill bit 2 is used to rotate the slope at the front end of the hollow anchor body 1. Then, the two hollow anchor bodies 1 are connected through the central installation sleeve 301. Then, the expansion ring 303 is installed into the central installation sleeve 301 through the connecting ring groove 302. The interaction force between the compressed expansion ring 303 and the inner wall of the duct then protects the side of the hollow anchor body 1. The hollow anchor body 1 is supported so that it can be kept in the center of the hole after being inserted into the hole. Then, the reinforcing side strip 305 is installed on the outside of the central installation sleeve 301 through the support sleeve 304. The reinforcing side strip 305 provides limiting support for the side of the expansion ring 303, so that the expansion ring 303 can expand in a directional manner after being squeezed. This optimizes the use of the slope support anchor and prevents the slope support anchor from bending during the drilling process, thereby improving the stability and ease of use of the slope support anchor.

[0044] During the grouting process, when sealing the end of the slope support anchor, the grout stop plug 401 is fitted onto the outside of the hollow anchor body 1 through the limiting arc ring 402. Then, the outer side of the limiting arc ring 402 is pressed by the clamping sleeve 403 to ensure that the grout stop plug 401 fits tightly with the end of the duct. Air is then injected into the sealing airbag 404 through the inflation tube 405 to seal the side gap of the limiting arc ring 402 through the expanded sealing airbag 404. During the grouting process, the position of the grout in the inner ring of the sealing airbag 404 is observed through the clamping sleeve 403. This further optimizes the use of the slope support anchor, ensures sufficient grouting inside the duct, effectively avoids the phenomenon of grout overflow at the end of the slope support anchor, and improves the installation stability of the slope support anchor.

[0045] When it is necessary to adjust the position of the slope support anchor, the components are installed on the side of the limiting arc ring 402 by connecting the side plate 501 and connecting magnetic plate 502. Then, the tilt direction of the slope support anchor is observed by the bubble level 504 on the top of the snap-fit ​​horizontal plate 503 to assist in the adjustment of the tilt direction of the slope support anchor. Then, the side of the snap-fit ​​horizontal plate 503 is protected by the protective side plate 505, which further expands the function of the slope support anchor and improves the ease of use of the slope support anchor.

[0046] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A self-drilling hollow grouting slope support anchor, comprising a hollow anchor body (1), characterized in that: The hollow anchor rod body (1) has a multi-directional drill bit (2) fixedly sleeved at its end; The hollow anchor body (1) is provided with a central connecting buffer mechanism (3) on its outer side; The central connecting buffer mechanism (3) includes a central mounting sleeve (301), a connecting ring groove (302), an expansion rubber ring (303), a support sleeve (304), and a reinforcing side strip (305); A central mounting sleeve (301) is fitted onto the outer interface of the hollow anchor body (1). A connecting ring groove (302) is provided at both ends of the central mounting sleeve (301). An expansion rubber ring (303) is bonded inside the connecting ring groove (302). A support sleeve (304) is fitted onto the middle of the outer side of the central mounting sleeve (301). Reinforcing side strips (305) are fixedly connected at equal intervals along the circumferential direction on the outer side of the support sleeve (304).

2. The self-drilling hollow grouting slope support anchor bolt according to claim 1, characterized in that, After the outer diameter of the expansion ring (303) is compressed to its limit position, it is flush with the outer diameter of the central mounting sleeve (301), and the end of the reinforcing side strip (305) is tightly fitted with the outer side of the expansion ring (303).

3. The self-drilling hollow grouting slope support anchor bolt according to claim 1, characterized in that, The hollow anchor rod body (1) is provided with an end interception and protection mechanism (4) at the outer tail end; The end interception and protection mechanism (4) includes a stop plug (401), a limiting arc ring (402), a compression sleeve (403), a sealing airbag (404), an inflation tube (405), and an overflow rectangular tube (406); A grout stop plug (401) is tightly fitted to the outer tail of the hollow anchor rod body (1). A limiting arc ring (402) is tightly fitted to the outer side of the hollow anchor rod body (1) corresponding to the grout stop plug (401). A compression sleeve (403) is tightly fitted to the outer side of the hollow anchor rod body (1) corresponding to the limiting arc ring (402). A sealing airbag (404) is bonded to the side of the limiting arc ring (402) near the grout stop plug (401). An inflation tube (405) is fixedly connected to the middle of the bottom surface of one side of the sealing airbag (404). An overflow rectangular tube (406) is bonded to the middle of the top of the sealing airbag (404).

4. The self-drilling hollow grouting slope support anchor bolt according to claim 3, characterized in that, The inflation tube (405) penetrates the side of the limiting arc ring (402), the outer side of the sealing airbag (404) is tightly fitted with the inner wall of the limiting arc ring (402), and the top outlet of the overflow rectangular tube (406) is interconnected with the inner cavity of the sealing airbag (404).

5. A self-drilling hollow grouting slope support anchor bolt according to claim 3, characterized in that, An auxiliary positioning mechanism (5) is provided on the top of the outer side of the limiting arc ring (402); The auxiliary positioning mechanism (5) includes a connecting side plate (501), a connecting magnetic plate (502), a snap-fit ​​horizontal plate (503), a bubble level (504), and a protective side plate (505); A connecting side piece (501) is fixedly connected to the middle of the top of the outer side of the limiting arc ring (402). A connecting magnetic piece (502) is adsorbed on the middle of one side of the connecting side piece (501). A snap-fit ​​horizontal plate (503) is fixedly connected to the middle of one side of the connecting magnetic piece (502). A bubble level (504) is glued to the middle of the top of the snap-fit ​​horizontal plate (503). Protective side plates (505) are glued to the middle of both sides of the snap-fit ​​horizontal plate (503).

6. A self-drilling hollow grouting slope support anchor bolt according to claim 5, characterized in that, Two bubble levels (504) are arranged perpendicularly to each other on the top of the snap-fit ​​horizontal plate (503), and anti-slip textures are provided on both sides of the protective side plate (505).

Images