Self-drilling adjustable anchor pipe grouting anchor rod reinforcing device

Abstract

The utility model discloses a self-drilling adjusting type anchor pipe grouting anchor rod reinforcing device which comprises an anchor rod, an anchor pipe, a water inlet pipe, a stirring device and a rotary pressurizing device, the anchor pipe is arranged on the periphery of the anchor rod in a sleeved mode, a containing cavity used for containing a grouting body is formed between the anchor pipe and the anchor rod, and the anchor pipe comprises a plurality of segments which are detachably connected with one another. By arranging the anchor pipe and dividing the anchor pipe into multiple sections, the length of the anchor pipe can be flexibly configured, the applicability is improved, grouting can be achieved through segmented grouting, the bonding strength of a grouting body and a rock-soil body is improved, the water inlet pipe is used for conveying water to the containing cavity, the stirring device comprises a stirrer and a rotary drill bit, and the stirrer is used for driving the rotary drill bit to rotate. The rotary pressurizing device is arranged in the containing cavity and can ensure that grout is not prone to sedimentation and solidification, the rotary pressurizing device comprises a rotary pressing plate, a rotary screw and a valve body, the rotary pressing plate is located in the containing cavity, the rotary screw is in threaded connection with the valve body, and when the rotary screw is rotated, the rotary screw drives the rotary pressing plate to move so as to pressurize the grouting body in the containing cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of anchor rod grouting reinforcement, in particular to a self-drilling adjustable anchor pipe grouting anchor rod reinforcement device. Background Art

[0002] At present, anchor rods are widely used in tunnel engineering, slope control engineering, water conservancy and hydropower engineering and other fields. The reinforcement method of anchor rods and grouting can effectively increase the stability of rock and soil, prevent the occurrence of landslides and collapse accidents of rock strata, and ensure the smooth progress of engineering construction.

[0003] The existing anchor rods have a fixed length, which results in poor applicability to different rock and soil projects. In addition, currently, grouting is usually only performed once into the anchor rod to obtain a grouting body, which is located between the anchor rod and the rock and soil. The bonding degree between the anchor rod and the rock and soil is insufficient, the stability is not good enough, the slurry has low permeability in the rock formation, and the long-term support effect cannot be guaranteed. In addition, the slurry at the bottom of the anchor rod is easily precipitated and solidified when left stationary for a long time, resulting in adverse phenomena, such as great safety and durability risks, loss of prestress, corrosion of the rod body, sudden damage of the outer anchor head and other defects. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a self-drilling adjustable anchor pipe grouting anchor rod reinforcement device, which can flexibly configure the length of the anchor pipe and improve applicability by setting the anchor pipe and dividing it into multiple sections. It can also use segmented grouting to achieve grouting, increase the bonding strength between the grouting body and the rock and soil body, the stirring device can ensure that the slurry is not easy to precipitate and solidify, and the rotary pressurizing device can further compress the grouting body.

[0005] According to the self-drilling adjustable anchor pipe grouting anchor rod reinforcement device of the embodiment of the utility model, it comprises: an anchor rod, which is a hollow structure; an anchor pipe, which is sleeved on the outer periphery of the anchor rod, a receiving cavity for receiving a grouting body is formed between the anchor pipe and the anchor rod, a first grouting hole is provided on the outer peripheral wall of the anchor pipe and is communicated with the receiving cavity, and the anchor pipe comprises a plurality of sections that are detachably connected to each other; a fastening device, which is used to fix the anchor rod and the anchor pipe, and the fastening device is provided with a water pipe connector; a water inlet pipe, which is connected to the water pipe connector, and the water inlet pipe is used to transport water to the receiving cavity; A stirring device is connected to the lower end of the anchor pipe, the stirring device includes an agitator and a rotary drill bit, the agitator is used to drive the rotary drill bit to rotate, and the outer peripheral wall of the rotary drill bit is provided with a second grouting hole connected to the accommodating chamber; a rotary pressurizing device is located at the upper end of the anchor rod, the rotary pressurizing device includes a spinning plate, a rotating screw and a valve body, the spinning plate is located in the accommodating chamber, the rotating screw is threadedly connected to the valve body, and when the rotating screw is rotated, the rotating screw drives the spinning plate to move to pressurize the grouting body in the accommodating chamber.

[0006] The self-drilling adjustable anchor pipe grouting anchor rod reinforcement device according to the embodiment of the utility model has at least the following beneficial effects: when in use, grout is poured into the anchor rod, and the grout can flow out through the first grouting hole and the second grouting hole. By arranging the anchor pipe, a grouting body is formed between the anchor pipe and the rock and soil body. By dividing the anchor pipe into multiple sections, the length of the anchor pipe can be flexibly configured according to actual needs, avoiding the cutting and welding operations of the anchor pipe. The anchor pipe itself is not only used as a protective measure, but also as a channel for multiple segmented grouting, thereby improving the anchoring force of the grouting body and the rock and soil body. By setting a water inlet pipe, water is injected into the slurry through the water inlet pipe to adjust the viscosity of the slurry. By setting a stirring device, the agitator is turned on during the grouting process. The agitator drives the rotary drill bit to rotate, which can ensure that the slurry is not easy to settle and solidify. By setting a rotary pressure device, the rotary pressure device is used to apply grouting pressure to the grouting body during the segmented grouting process, which can fully compact the grouting body. The rock and soil around the anchor pipe are compacted through splitting grouting, so that the slurry penetrates deep into the rock and soil and forms a root-like flow channel, thereby improving the bonding strength between the grouting body and the rock and soil.

[0007] According to some embodiments of the utility model, the spinning plate is located below the fastening device, a pressure plate is provided between the fastening device and the spinning plate, the pressure plate is connected to the anchor rod, and the rotating screw is passed through the fastening device and the pressure plate.

[0008] According to some embodiments of the present invention, the multiple segments are connected by snap-fitting.

[0009] According to some embodiments of the present utility model, a plurality of first grouting holes are provided, and the plurality of first grouting holes are arranged at intervals along the circumferential direction.

[0010] According to some embodiments of the utility model, the water inlet pipe is provided with a regulating valve for regulating the water flow.

[0011] According to some embodiments of the present invention, the anchor rod is made of low-alloy high-strength steel material.

[0012] According to some embodiments of the present invention, the agitator is made of stainless steel.

[0013] According to some embodiments of the present invention, the anchor pipe is made of carbon structural steel material.

[0014] According to some embodiments of the present utility model, the water inlet pipe is made of PVC material.

[0015] According to some embodiments of the present utility model, the valve body is a ball valve, and the rotating screw is provided with a plurality of screws, and the plurality of rotating screws are arranged along the circumferential direction.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 It is a structural schematic diagram of a self-drilling adjustable anchor pipe grouting anchor rod reinforcement device according to some embodiments of the utility model;

[0019] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0020] Figure 3 FIG. 1 is a structural schematic diagram of an anchor pipe of a self-drilling adjustable anchor pipe grouting anchor reinforcement device;

[0021] Figure 4 Figure 3 is a top view of the rotary pressurizing device of the self-drilling adjustable anchor pipe grouting anchor reinforcement device.

[0022] Reference numerals:

[0023] Self-drilling adjustable anchor pipe grouting anchor reinforcement device 1000;

[0024] Anchor rod 100;

[0025] Anchor pipe 200, accommodating cavity 210, first grouting hole 220, segment 230, buckle 240, grouting body 250;

[0026] Fastening device 300, water pipe connector 310, pressure plate 320;

[0027] Water inlet pipe 400, regulating valve 410;

[0028] A stirring device 500, an agitator 510, a rotary drill bit 520, and a second grouting hole 530;

[0029] Rotating pressurizing device 600 , spinning plate 610 , rotating screw 620 , valve body 630 . DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] Reference Figure 1 As shown, the self-drilling adjustable anchor pipe 200 grouting anchor rod 100 reinforcement device 1000 of the embodiment of the utility model comprises an anchor rod 100, an anchor pipe 200, a fastening device 300, a water inlet pipe 400, a stirring device 500 and a rotary pressurizing device 600. The anchor rod 100 is a hollow structure. When in use, grout is injected into the anchor rod 100. The anchor pipe 200 is sleeved on the outer periphery of the anchor rod 100. A receiving cavity 210 for receiving the grouting body 250 is formed between the anchor pipe 200 and the anchor rod 100. The outer peripheral wall of the anchor pipe 200 is provided with a first grouting hole 220 communicating with the receiving cavity 210. The anchor pipe 200 comprises a plurality of segments 230 which are detachably connected to each other. Figure 2 As shown, the fastening device 300 is used to fix the anchor rod 100 and the anchor pipe 200. The fastening device 300 is provided with a water pipe connector 310. The water inlet pipe 400 is connected to the water pipe connector 310. The water inlet pipe 400 is used to transport water to the accommodating chamber 210. The stirring device 500 is connected to the lower end of the anchor pipe 200. The stirring device 500 includes an agitator 510 and a rotary drill bit 520. The agitator 510 is used to drive the rotary drill bit 520 to rotate. The outer peripheral wall of the rotary drill bit 520 is provided with a second grouting hole 530 connected to the accommodating chamber 210.

[0032] The rotary pressurizing device 600 is located at the upper end of the anchor rod 100, and comprises a spinning plate 610, a rotating screw 620 and a valve body 630. The spinning plate 610 is located in the accommodating cavity 210, and the rotating screw 620 is threadedly connected to the valve body 630. When the rotating screw 620 is rotated, the rotating screw 620 drives the spinning plate 610 to move, so as to pressurize the grouting body 250 in the accommodating cavity 210. The applied pressure is controlled at 0.5-3MPa.

[0033] The beneficial effects of the utility model are as follows: when in use, grout is poured into the anchor rod 100, and the grout can flow out through the first grouting hole 220 and the second grouting hole 530. By setting the anchor pipe 200, a grouting body 250 is formed between the anchor pipe 200 and the rock and soil body. By dividing the anchor pipe 200 into multiple sections, the length of the anchor pipe 200 can be flexibly configured according to actual needs, thereby avoiding the cutting and welding operations of the anchor pipe 200. The anchor pipe 200 itself serves not only as a protective measure, but also as a channel for multiple segmented 230 grouting. Specifically, the slurry enters the anchor rod 100 and then enters the accommodating cavity 210. The slurry gradually fills the accommodating cavity 210 from bottom to top and forms a grouting body 250, thereby realizing segmented 230 grouting, which can gradually fill the gap between the anchor pipe 200 and the rock and soil body, thereby improving the grouting body. 250 and the anchoring force of the rock and soil; by setting a water inlet pipe 400, the water inlet pipe 400 is connected to the accommodating chamber 210, and the water inlet pipe 400 injects water into the slurry, so as to flexibly adjust the viscosity of the slurry; by setting a stirring device 500, turning on the agitator 510 during the grouting process, and the agitator 510 drives the rotating drill bit 520 to rotate, it can be ensured that the slurry is not easy to precipitate and solidify, and avoid the occurrence of adverse phenomena; by setting a rotary pressurizing device 600, the rotary pressurizing device 600 is used to apply grouting pressure to the grouting body 250 during the segmented grouting 230, which can fully compact the grouting body 250, and the rock and soil around the anchor pipe 200 is compacted by splitting grouting, so that the slurry penetrates deep into the rock and soil and forms a tree root-like flow channel, thereby improving the bonding strength between the grouting body 250 and the rock and soil.

[0034] Reference Figure 1 and Figure 2 As shown, according to some embodiments of the present invention, the spinning plate 610 is located below the fastening device 300, a pressure plate 320 is provided between the fastening device 300 and the spinning plate 610, the pressure plate 320 is connected to the anchor rod 100, and the rotating screw 620 is passed through the fastening device 300 and the pressure plate 320.

[0035] Reference Figure 1 and Figure 3 As shown, according to some embodiments of the present invention, the multiple segments 230 of the anchor pipe 200 are connected by buckles 240, and the multiple segments 230 can be quickly disassembled or installed, thereby improving the operation speed.

[0036] According to some embodiments of the present invention, a plurality of first grouting holes 220 are provided, and the plurality of first grouting holes 220 are arranged at intervals along the circumferential direction, which can also be understood as the plurality of first grouting holes 220 being arranged in a plum blossom shape. Specifically, along the length direction of the anchor pipe 200, 7 first grouting holes 220 with a diameter of 8 mm and arranged in a plum blossom shape are drilled at intervals of 1 mm.

[0037] Reference Figure 4As shown, according to some embodiments of the present invention, the valve body 630 is a ball valve, and the rotating screw 620 is provided with a plurality of screws, and the plurality of rotating screws 620 are arranged along the circumferential direction. Specifically, the rotating screw 620 is provided with three screws.

[0038] Reference Figure 1 As shown, according to some embodiments of the present invention, the water inlet pipe 400 is provided with a regulating valve 410 for regulating the water flow, and the water flow rate can be adjusted according to the desired slurry viscosity.

[0039] According to some embodiments of the utility model, the anchor rod 100 is made of low-alloy high-strength steel material, has excellent mechanical properties and corrosion resistance, the recommended length of the anchor rod 100 is 28m to 42m, the drilling diameter is about 130mm, the anchor rod 100 can be a fully threaded steel pipe using low-alloy high-strength steel, and the thickness of the anchor rod 100 is not less than 10mm.

[0040] According to some embodiments of the present invention, the rotary drill bit 520 is an alloy cross drill bit with a relatively high hardness.

[0041] According to some embodiments of the present invention, the agitator 510 is made of stainless steel, specifically 316L stainless steel, which is suitable for use in high temperature, strong acid and strong alkali environments. The ratio of cement to water is controlled according to the required slurry viscosity for stirring.

[0042] According to some embodiments of the present invention, the anchor pipe 200 is made of carbon structural steel material, specifically Q195 carbon structural steel, which has the characteristics of high plasticity, toughness and weldability.

[0043] According to some embodiments of the present invention, the water inlet pipe 400 is made of PVC material, and the water inlet pipe 400 can be a thickened, wear-resistant and transparent steel wire hose.

[0044] According to some embodiments of the present invention, the grouting material of the grouting body 250 is cement mortar with a fine aggregate particle size of less than 2 mm, with uniform texture and color, and should not have lumps. According to some embodiments of the present invention, the grouting body 250 uses pure cement slurry material with a medium water-cement ratio of 0.4 to 0.7, the cement slurry strength is about 30 MPa, and 5% of the cement mass is added with an early strength high-efficiency water reducing agent, which can also be adjusted according to the actual project.

[0045] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, inside, outside, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0046] In the description of the utility model, if there is a description of first or second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0047] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0048] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings. Finally, it should be explained that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. Self-drilling adjustable anchor pipe grouting anchor reinforcement device, characterized in that: include: Anchor rod, which is a hollow structure; An anchor pipe is sleeved on the outer circumference of the anchor rod, a receiving cavity for receiving the grouting body is formed between the anchor pipe and the anchor rod, a first grouting hole is provided on the outer circumferential wall of the anchor pipe and communicated with the receiving cavity, and the anchor pipe includes a plurality of segments which are detachably connected to each other; A fastening device, used to fix the anchor rod and the anchor pipe, the fastening device being provided with a water pipe connector; A water inlet pipe connected to the water pipe connector, the water inlet pipe being used to transport water to the accommodating cavity; A stirring device connected to the lower end of the anchor pipe, the stirring device comprising an agitator and a rotary drill bit, the agitator is used to drive the rotary drill bit to rotate, and the outer peripheral wall of the rotary drill bit is provided with a second grouting hole communicating with the accommodating cavity; A rotary pressurizing device is located at the upper end of the anchor rod, and includes a spinning plate, a rotating screw and a valve body. The spinning plate is located in the accommodating cavity, and the rotating screw is threadedly connected to the valve body. When the rotating screw is rotated, the rotating screw drives the spinning plate to move to pressurize the grouting body in the accommodating cavity.

2. The self-drilling adjustable anchor pipe grouting anchor reinforcement device according to claim 1 is characterized in that: The spinning plate is located below the fastening device, a pressure plate is provided between the fastening device and the spinning plate, the pressure plate is connected to the anchor rod, and the rotating screw is passed through the fastening device and the pressure plate.

3. The self-drilling adjustable anchor pipe grouting anchor reinforcement device according to claim 1 is characterized in that: The multiple segments are connected by snap-fit.

4. The self-drilling adjustable anchor pipe grouting anchor reinforcement device according to claim 1, characterized in that: There are a plurality of the first grouting holes, and the plurality of the first grouting holes are arranged at intervals along the circumferential direction.

5. The self-drilling adjustable anchor pipe grouting anchor reinforcement device according to claim 1, characterized in that: The water inlet pipe is provided with a regulating valve for regulating the water flow.

6. The self-drilling adjustable anchor pipe grouting anchor reinforcement device according to claim 1, characterized in that: The anchor rod is made of low-alloy high-strength steel material.

7. The self-drilling adjustable anchor pipe grouting anchor reinforcement device according to claim 1, characterized in that: The agitator is made of stainless steel.

8. The self-drilling adjustable anchor pipe grouting anchor reinforcement device according to claim 1, characterized in that: The anchor pipe is made of carbon structural steel material.

9. The self-drilling adjustable anchor pipe grouting anchor reinforcement device according to claim 1, characterized in that: The water inlet pipe is made of PVC material.

10. The self-drilling adjustable anchor pipe grouting anchor reinforcement device according to claim 1, characterized in that: The valve body is a ball valve, and a plurality of rotating screws are provided, and the plurality of rotating screws are arranged along the circumferential direction.

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