Grouting anchoring device and groutable solid anchor rod composed of same

Abstract

The invention discloses a grouting anchoring device and a groutable solid anchor rod composed of the grouting anchoring device. The grouting anchoring device comprises an anchoring anchor rod, a fixing device and the grouting anchoring device. The grouting anchoring device comprises a sleeve assembly and a grouting cup. The sleeve assembly comprises an inner supporting pipe and an outer connecting pipe connected with the inner supporting pipe in a sleeving mode, a plurality of grabbing rods rotationally connected with the inner supporting pipe are arranged at the bottom of the inner supporting pipe, elastic pieces are arranged at the connecting positions of the grabbing rods and the inner supporting pipe, and clamping grooves for limiting rotation of the grabbing rods are formed in the outer connecting pipe. A driving pipe is rotationally connected to the upper end of the outer connecting pipe, the driving pipe is in threaded connection with the inner supporting pipe, and the driving pipe enables the outer connecting pipe to do lifting motion relative to the inner supporting pipe through threaded connection so that the grabbing rod can be disengaged from the clamping groove. The friction force between the anchor rod and the stratum can be improved, the anchoring effect can be enhanced, meanwhile, the anchor rod can well adapt to the hole diameter change, it is ensured that the anchor rod can stably work in drill holes with different hole diameters, and controllability of the grouting process is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering anchoring, and particularly relates to a grouting anchoring device and a groutable solid bolt composed of this device. Background Art

[0002] In the field of engineering anchoring, especially in construction projects under complex geological conditions such as geotechnical, mining, tunneling, and underground engineering, bolts, as important support structures, their performance and stability are directly related to the safety and durability of the project. However, traditional anchoring technologies face a series of challenges in practical applications.

[0003] Traditional bolt designs often rely on standardized sizes and specifications, making it difficult to fully adapt to variable borehole diameters. Especially when encountering complex situations where the bottom borehole diameter is larger than the upper borehole diameter, the installation and fixation of bolts become particularly difficult. This not only increases the construction difficulty but also may affect the anchoring effect of the bolts, thereby threatening the stability of the entire engineering structure. In addition, grouting, as a key step to enhance the anchoring force of bolts, its process control is equally crucial. Moreover, problems such as uneven grouting and slurry loss often occur, all of which can lead to insufficient bonding between the bolt and the surrounding rock and soil mass, greatly reducing the anchoring force. However, although some improved bolts have emerged, there are still deficiencies in solving borehole diameter adaptability, grouting controllability, and construction convenience. For example, the bolts proposed in Chinese patents with publication numbers 110374652 and 210660155 have the above problems.

[0004] Based on this, there is an urgent need to propose a brand-new grouting anchoring device and a groutable solid bolt composed of this device. This device can increase the friction between the bolt and the formation, enhance the anchoring effect, and at the same time can well adapt to such borehole diameter changes, ensuring that the bolt can work stably in boreholes with different diameters, ensuring the controllability of the grouting process, improving the grouting effect, thereby enhancing the anchoring force, and providing a new solution for the development of the engineering anchoring field. Summary of the Invention

[0005] The present invention provides a grouting anchoring device and a groutable solid bolt composed of this device, including:

[0006] Anchoring bolt, with a fixing device and a grouting anchoring device arranged on the anchoring bolt;

[0007] The grouting anchoring device includes a casing assembly sleeved on the anchoring bolt and a grouting cup connected to the casing assembly. One end of the grouting cup abuts against the fixing device;

[0008] The casing assembly includes an inner support tube and an outer connection tube sleeved on the inner support tube. A plurality of gripping rods rotatably connected to the inner support tube are equally angularly distributed at the bottom of the inner support tube. An elastic member for driving the gripping rods to open relative to the inner support rod is provided at the connection between the gripping rods and the inner support tube. A clamping groove for accommodating at least part of the gripping rods to restrict the rotation of the gripping rods is provided on the outer connection tube;

[0009] Wherein, a driving tube is rotatably connected to the upper end of the outer connection tube, and the driving tube is threadedly connected to the inner support tube. The driving tube makes the outer connection tube move up and down relative to the inner support tube through threaded connection, so that the gripping rods are disengaged from the clamping groove.

[0010] Furthermore, a connecting protrusion is provided at the bottom of the inner support tube, a rotating hole is provided in the connecting protrusion, a rotating column corresponding to the rotating hole is provided at one end of the gripping rod, a receiving groove communicating with the rotating hole is provided in the connecting protrusion, and the elastic member is disposed in the receiving hole. One end of the elastic member abuts against the inner wall of the receiving hole, and the other end of the elastic member abuts against the gripping rod.

[0011] Furthermore, a reinforcing support rod is rotatably connected to the middle of the gripping rod. The end of the reinforcing support rod away from the gripping rod is slidably connected to the inner support tube. A slider is rotatably connected to the end of the reinforcing support rod away from the gripping rod. An outpouring opening for accommodating the reinforcing support rod is provided on the inner support tube. Sliding grooves are provided on both sides of the outpouring opening. The slider is slidably connected to the sliding groove. An embedded groove for accommodating at least part of the reinforcing support rod is provided on the gripping rod;

[0012] Wherein, when the slider slides to the top of the sliding groove, the gripping rod, the inner support tube and the reinforcing support rod are folded relative to each other. When the slider slides to the bottom of the sliding groove, the gripping rod, the inner support tube and the reinforcing support rod form a substantially triangular structure.

[0013] Furthermore, a rotating slot allowing the gripping rod to rotate is provided at the bottom of the outer connection tube, and the clamping groove is provided at the upper end of the rotating slot. A clamping protrusion corresponding to the clamping groove is convexly provided at the end of the gripping rod away from the inner support tube.

[0014] Furthermore, a first annular protrusion is provided at the upper end of the outer connection tube, and a second annular protrusion corresponding to the first annular protrusion is provided at the lower end of the driving tube. The outer connection tube and the driving tube are rotationally connected by clamping through the first annular protrusion and the second annular protrusion.

[0015] Furthermore, a driving thread is formed in the driving tube, and a guiding thread matching the driving thread is provided at the upper end of the inner support tube. The driving tube makes the outer connection tube move up and down relative to the inner support tube through threaded connection, so that the clamping protrusion is disengaged from the clamping groove.

[0016] Furthermore, a positioning protrusion is longitudinally convexly provided on the outer surface of the inner support tube, and a positioning groove corresponding to the positioning protrusion is provided on the inner surface of the outer connection tube.

[0017] Furthermore, a support protrusion is provided on the grab bar, and the support protrusion is arranged at one end of the grab bar away from the reinforcement strut;

[0018] Wherein, when the grab bar opens relative to the inner support rod, the support protrusion abuts against the inner support tube.

[0019] Furthermore, a plurality of slurry outlet slots are equiangularly opened at the bottom of the inner support tube.

[0020] Furthermore, the fixing device includes a tray sleeved on the anchor bolt and a nut installed on the anchor bolt;

[0021] Wherein, the grouting cup is installed on the outside of the tray and one end of the grouting cup is connected to the casing assembly. The inside of the grouting cup is a tapered hole, and a tapered grout plug adapted to the tapered hole is installed in the tapered hole. The small-diameter end of the tapered grout plug extends into the tapered hole, the nut is tightened to the large-diameter end of the tapered grout plug, and a grouting hole is opened on the side of the grouting cup.

[0022] The beneficial effects of the present invention are as follows:

[0023] By rotating the drive tube, the grab bar opens under the action of the elastic member and forms a tight contact with the drilling wall, effectively enhancing the friction between the anchor bolt and the drilling hole, thereby improving the fixing performance. The grouting process further fills the gap between the drilling hole and the anchor bolt to form a more solid anchor body, enhancing the overall stability and firmness; and when the bottom hole diameter of the drilling hole is larger than the upper hole diameter, the grab bar can better adapt to this hole diameter change after opening, ensuring that the anchor bolt can be stably fixed in the drilling hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention, form a part of this application, and the schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0025] Figure 1 It is a schematic diagram of a grouting anchoring device and a groutable solid anchor bolt composed of this device;

[0026] Figure 2 For Figure 1 The enlarged schematic diagram at position A in

[0027] Figure 3 It is a cross-sectional view of a grouting anchoring device and a groutable solid anchor bolt composed of this device;

[0028] Figure 4 For Figure 3 The enlarged schematic diagram at position B in

[0029] Figure 5 It is a schematic diagram of the inner support tube;

[0030] Figure 6 It is a schematic diagram of an external connecting pipe;

[0031] Figure 7 It is a partial sectional view of an internal support pipe.

[0032] In the figure:

[0033] Anchoring bolt (1); fixing device (2); tray (21); nut (22); grouting anchoring device (3); casing assembly (31); internal support pipe (311); connecting protrusion (3111); rotating hole (3112); receiving groove (3113); slurry outlet opening (3114); sliding groove (3115); guiding thread (3116); positioning protrusion (3117); slurry outlet slot (3118); external connecting pipe (312); clamping groove (3121); rotating slot (3122); clamping protrusion (3123); first annular protrusion (3124); positioning groove (3125); grasping rod (313); rotating column (3131); reinforcing support rod (3132); slider (3133); embedded groove (3134); supporting protrusion (3135); elastic member (314); driving pipe (315); second annular protrusion (3151); driving thread (3152); grouting cup (32); conical slurry stopper (321); grouting hole (322). Specific embodiments

[0034] Next, the technical solution of the present invention will be described in conjunction with the drawings of the present invention. However, the described embodiments are only a part of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without making creative efforts based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0035] As Figures 1 to 7 shown, the present invention provides a grouting anchoring device and a groutable solid bolt composed of the device, including an anchoring bolt 1, a fixing device 2 and a grouting anchoring device 3 provided on the anchoring bolt 1;

[0036] The grouting anchoring device 3 includes a casing assembly 31 sleeved on the anchoring bolt 1 and a grouting cup 32 connected to the casing assembly 31. One end of the grouting cup 32 abuts against the fixing device 2;

[0037] The casing assembly 31 includes an internal support pipe 311 and an external connecting pipe 312 sleeved on the internal support pipe 311. A plurality of grasping rods 313 rotatably connected to the internal support pipe 311 are equally angularly distributed at the bottom of the internal support pipe 311. An elastic member 314 for driving the grasping rods 313 to open relative to the internal support rod is provided at the connection between the grasping rods 313 and the internal support pipe 311. A clamping groove 3121 for accommodating at least part of the grasping rods 313 to limit the rotation of the grasping rods 313 is provided on the external connecting pipe 312;

[0038] Among them, a drive pipe 315 is rotatably connected to the upper end of the outer connection pipe 312. The drive pipe 315 is threadedly connected to the inner support pipe 311. The drive pipe 315 makes the outer connection pipe 312 move up and down relative to the inner support pipe 311 through threaded connection, so that the grasping rod 313 disengages from the clamping groove 3121.

[0039] Specifically, the anchoring bolt 1 is made of high-strength and corrosion-resistant alloy steel material, and its diameter is determined according to engineering requirements, usually 20 - 50 mm. The surface of the bolt is subjected to precision threading to increase the bonding force with the grouting material. The shape of the anchoring bolt 1 is set as a straight rod or a rod with a certain taper to adapt to different geological conditions.

[0040] In this embodiment, a standard thread is designed at the top of the anchoring bolt 1 for facilitating connection with fixing devices 2 such as the nut 22 and the tray 21. In some embodiments (not shown in the figure), the anchoring bolt is connected to fixing devices such as the nut and the tray by welding or expansion plugs and the like to improve the stability and reliability of the connection.

[0041] As Figure 7 shown, in this embodiment, a connecting protrusion 3111 is provided at the bottom of the inner support pipe 311. A rotating hole 3112 is provided in the connecting protrusion 3111. A rotating column 3131 corresponding to the rotating hole 3112 is provided at one end of the grasping rod 313. A receiving groove 3113 communicating with the rotating hole 3112 is provided in the connecting protrusion 3111. The elastic member 314 is arranged in the receiving hole. Among them, one end of the elastic member 314 abuts against the inner wall of the receiving hole, and the other end of the elastic member 314 pushes against the grasping rod 313.

[0042] In this embodiment, the bottom of the inner support pipe 311 is designed with a connecting protrusion 3111. The connecting protrusion 3111 includes a rotating hole 3112 and a receiving groove 3113. The rotating hole 3112 is used to connect the grasping rod 313, and the receiving groove 3113 is used to install the elastic member 314. The inner support pipe 311 is made of high-strength and corrosion-resistant alloy steel to ensure the stability during long-term use.

[0043] Specifically, the elastic member 314 generally adopts a high-strength spring or elastic rubber. One end abuts against the inner wall of the receiving groove 3113, and the other end pushes against the grasping rod 313 to keep the grasping rod 313 in a tendency to open.

[0044] As Figure 1 、 Figure 2 and Figure 5As shown, in this embodiment, a reinforcing support rod 3132 is rotatably connected to the middle of the grasping rod 313. One end of the reinforcing support rod 3132 away from the grasping rod 313 is slidably connected to the inner support tube 311. A slider 3133 is rotatably connected to the end of the reinforcing support rod 3132 away from the grasping rod 313. An outpouring opening 3114 for accommodating the reinforcing support rod 3132 is provided in the inner support tube 311. Sliding grooves 3115 are formed on both sides of the outpouring opening 3114. The slider 3133 is slidably connected to the sliding grooves 3115. An embedded groove 3134 for accommodating at least part of the reinforcing support rod 3132 is provided on the grasping rod 313. Wherein, when the slider 3133 slides to the top of the sliding groove 3115, the grasping rod 313, the inner support tube 311 and the reinforcing support rod 3132 are folded relative to each other. When the slider 3133 slides to the bottom of the sliding groove 3115, the grasping rod 313, the inner support tube 311 and the reinforcing support rod 3132 form a roughly triangular structure.

[0045] In this embodiment, the reinforcing support rod 3132 provides additional supporting force to enhance the stability of the grasping rod 313. When the slider 3133 slides to the top of the sliding groove 3115, the grasping rod 313, the inner support tube 311 and the reinforcing support rod 3132 are folded relative to each other, which is convenient for installation and transportation. When the slider 3133 slides to the bottom of the sliding groove 3115, a triangular structure is formed to enhance the overall stability.

[0046] As Figure 6 shown, in this embodiment, a rotating slot 3122 for allowing the grasping rod 313 to rotate is provided at the bottom of the outer connecting tube 312. A clamping slot 3121 is opened at the upper end of the rotating slot 3122. A clamping protrusion 3123 corresponding to the clamping slot 3121 is convexly provided at the end of the grasping rod 313 away from the inner support tube 311.

[0047] Specifically, one end of the grasping rod 313 is designed with a rotating column 3131, which is matched with the rotating hole 3112 of the inner support tube 311; a reinforcing support rod 3132 is rotatably connected to the middle; a clamping protrusion 3123 is designed at the end of the grasping rod 313 away from the inner support tube 311. The grasping rod 313 is made of high-strength alloy steel to ensure sufficient strength and toughness, and its surface is subjected to anti-corrosion treatment to extend its service life.

[0048] Specifically, the outer connecting tube 312 is sleeved outside the inner support tube 311, and a rotating slot 3122 and a clamping slot 3121 are designed at the bottom. The rotating slot 3122 allows the grasping rod 313 to freely rotate under the action of the elastic member 314, and the clamping slot 3121 is used to limit the opening angle of the grasping rod 313.

[0049] As Figure 4 and Figure 6As shown, in this embodiment, a first annular protrusion 3124 is provided at the upper end of the outer connecting pipe 312, and a second annular protrusion 3151 corresponding to the first annular protrusion 3124 is provided at the lower end of the driving pipe 315. The outer connecting pipe 312 and the driving pipe 315 are rotationally connected by clamping through the first annular protrusion 3124 and the second annular protrusion 3151.

[0050] As Figure 4 and Figure 5 shown, in this embodiment, a driving thread 3152 is formed in the driving pipe 315, and a guiding thread 3116 matching the driving thread 3152 is provided at the upper end of the inner support pipe 311. The driving pipe 315 is threadedly connected to make the outer connecting pipe 312 move up and down relative to the inner support pipe 311, so that the clamping protrusion 3123 disengages from the clamping groove 3121.

[0051] Specifically, the upper end of the driving pipe 315 is connected to the grouting cup 32, and the lower end is designed with a second annular protrusion 3151 and a driving thread 3152. The second annular protrusion 3151 matches the first annular protrusion 3124 of the outer connecting pipe 312 to form a rotational connection. The driving pipe 315 is made of high-strength alloy steel to ensure the stability of long-term rotational use. The driving thread 3152 adopts a standard thread design and matches the guiding thread 3116 of the inner support pipe 311 to achieve lifting movement through rotation.

[0052] Among them, when the driving pipe 315 rotates clockwise, the outer connecting pipe 312 moves up relative to the inner support pipe 311 through threaded connection. The clamping protrusion 3123 gradually disengages from the clamping groove 3121, and the grasping rod 313 opens under the action of the elastic member 314. Subsequently, the driving pipe 315 is rotated counterclockwise to make the outer connecting pipe 312 move down relative to the inner support pipe 311, and the clamping protrusion 3123 cannot be inserted into the clamping groove 3121, that is, it remains in a permanently unfolded state.

[0053] As Figure 5 and Figure 6 shown, in this embodiment, a positioning protrusion 3117 is longitudinally protruded on the outer surface of the inner support pipe 311, and a positioning groove 3125 corresponding to the positioning protrusion 3117 is opened on the inner surface of the outer connecting pipe 312 to ensure the accurate relative position between the two.

[0054] As Figure 2 and Figure 5 shown, in this embodiment, a support protrusion 3135 is provided on the grasping rod 313, and the support protrusion 3135 is provided at one end of the grasping rod 313 away from the reinforcing strut 3132; among them, when the grasping rod 313 opens relative to the inner support rod, the support protrusion 3135 abuts against the inner support pipe 311. The support protrusion 3135 can prevent the grasping rod 313 from opening excessively and damaging the inner support pipe 311.

[0055] As Figure 2As shown, in this embodiment, a plurality of grout outlet slots 3118 are equally angled and opened at the bottom of the inner support pipe 311 to ensure that the grouting material can be evenly distributed into the rock and soil mass.

[0056] As Figure 1 and Figure 3 shown, in this embodiment, the fixing device 2 includes a tray 21 sleeved on the anchoring bolt 1 and a nut 22 installed on the anchoring bolt 1; wherein, the grouting cup 32 is installed outside the tray 21 and one end of the grouting cup 32 is connected to the casing assembly 31. The inside of the grouting cup 32 is a tapered hole, and a tapered grout stopper 321 adapted to the tapered hole is installed in the tapered hole. The small-diameter end of the tapered grout stopper 321 extends into the tapered hole, and the nut 22 is tightened to the large-diameter end of the tapered grout stopper 321. A grouting hole 322 is opened on the side surface of the grouting cup 32.

[0057] Specifically, the tray 21 is made of thick steel plate to ensure sufficient bearing capacity and anti-deformation ability. Designed according to the bolt diameter and engineering requirements, the tray 21 can be set as circular or square, and the edges are chamfered to prevent scratching the construction workers. The tray 21 is connected to the bolt by welding or bolts to ensure firmness and reliability. The nut 22 is made of high-strength alloy steel and is matched with the bolt material. The inside of the nut 22 is designed with a thread that matches the thread of the anchoring bolt 1; in some embodiments (not shown in the figure), the outside of the nut is also provided with anti-slip threads for easy tightening.

[0058] Specifically, the grouting cup 32 is made of corrosion-resistant and wear-resistant alloy steel or plastic material. The grouting cup 32 is installed outside the tray 21, the inside is designed as a tapered hole, and a grouting hole 322 is opened on the side surface. A slurry discharge port is designed at the bottom of the tapered hole for discharging the excess grouting material. The tapered grout stopper 321 is made of rubber or polyurethane material, the small-diameter end extends into the tapered hole, and the large-diameter end is in close contact with the nut 22 to prevent the grouting material from leaking out.

[0059] Among them, the grouting material is injected into the grouting cup 32 through the grouting equipment. The tapered grout stopper 321 prevents the grouting material from leaking out and ensures the grouting effect. The grouting material enters the rock and soil mass through the grouting hole 322 to fill the pores and fissures and improve the overall strength and stability of the rock and soil mass.

[0060] The installation process of the grouting and anchoring device provided by the present invention and the groutable solid bolt composed of this device is as follows:

[0061] Insert the anchoring bolt into the predetermined position to ensure that the bolt is vertical and stable;

[0062] Install the tray and the nut to initially fix the bolt;

[0063] Assemble the grouting and anchoring device and sleeve it on the anchoring bolt. Ensure that the grab bar is in a closed state and the positioning protrusion is snapped into the positioning groove;

[0064] Rotate the drive pipe to raise the outer connecting pipe relative to the inner support pipe. Under the action of the elastic member, the gripping rods open and grip into the rock and soil mass.

[0065] Inject the grouting material into the grouting cup through the grouting equipment. The grouting material is evenly distributed into the rock and soil mass through the grouting holes and the slurry outlet grooves.

[0066] After the grouting material solidifies, a strong anchoring force is formed.

[0067] The present invention has many usage scenarios, including but not limited to the scenarios described below:

[0068] In application scenarios such as slope support and foundation pit support in geotechnical engineering, the grouting anchoring device can provide a strong support force to ensure the safety of the project; in mine exploitation, especially in the roadway support of underground mines, the grouting anchoring device can effectively prevent the roadway from collapsing and ensure the safety of personnel and equipment; during tunnel excavation, the grouting anchoring device can be used for the support of the tunnel wall surface to enhance the stability of the tunnel; in construction engineering, such as deep foundation pit support and basement wall support, the grouting anchoring device can provide a reliable support solution; in water conservancy projects, such as dike reinforcement and reservoir dam support, the grouting anchoring device can enhance the stability of the structure and prevent soil erosion.

Claims

1. A grouting anchoring device and a groutable solid anchor rod composed of the device, characterized in that: include: Anchor bolt, a fixing device and a grouting anchor device arranged on the anchor bolt; The grouting anchoring device comprises a sleeve assembly sleeved on the anchoring bolt and a grouting cup connected to the sleeve assembly, and one end of the grouting cup abuts against the fixing device; The sleeve assembly includes an inner support tube and an outer tube sleeved with the inner support tube, a plurality of grab bars rotatably connected to the inner support tube are distributed at equal angles at the bottom of the inner support tube, an elastic member is provided at the connection between the grab bars and the inner support tube to drive the grab bars to open relative to the inner support bars, and a clamping groove is provided on the outer tube to accommodate at least part of the grab bars to limit the rotation of the grab bars; A driving tube is rotatably connected to the upper end of the external tube, and the driving tube is threadedly connected to the inner support tube. The driving tube enables the external tube to perform lifting movement relative to the inner support tube through the threaded connection, so that the grab bar is separated from the positioning groove.

2. The grouting anchoring device and the groutable solid anchor rod composed of the device according to claim 1, characterized in that: A connecting protrusion is provided at the bottom of the inner support tube, a rotating hole is provided in the connecting protrusion, a rotating column corresponding to the rotating hole is provided at one end of the grab rod, a receiving groove connected to the rotating hole is provided in the connecting protrusion, and the elastic member is configured in the receiving hole, wherein one end of the elastic member abuts against the inner wall of the receiving hole, and the other end of the elastic member pushes the grab rod.

3. The grouting anchoring device and the groutable solid anchor rod composed of the device according to claim 2, characterized in that: A reinforcing support rod is rotatably connected to the middle part of the grab rod, and one end of the reinforcing support rod away from the grab rod is slidably connected to the inner support tube, and a slider is rotatably connected to the other end of the reinforcing support rod away from the grab rod, and a slurry outlet opening capable of accommodating the reinforcing support rod is provided on the inner support tube, and sliding grooves are provided on both sides of the slurry outlet opening, and the slider is slidably connected to the sliding grooves, and an embedded groove capable of accommodating at least part of the reinforcing support rod is provided on the grab rod; Among them, when the slider slides to the top of the slide groove, the grab bar, the inner support tube and the reinforcement support rod are relatively folded, and when the slider slides to the bottom of the slide groove, the grab bar, the inner support tube and the reinforcement support rod are roughly triangular structure.

4. The grouting anchoring device and the groutable solid anchor rod composed of the device according to claim 3, characterized in that: A rotation slot allowing the grab bar to rotate is provided at the bottom of the external tube, the locking slot is provided at the upper end of the rotation slot, and a locking protrusion corresponding to the locking slot is provided at one end of the grab bar away from the inner support tube.

5. The grouting anchoring device and the groutable solid anchor rod composed of the device according to claim 4, characterized in that: A first annular protrusion is arranged at the upper end of the external tube, and a second annular protrusion corresponding to the first annular protrusion is arranged at the lower end of the driving tube. The external tube and the driving tube are rotatably connected by clamping the first annular protrusion and the second annular protrusion.

6. The grouting anchoring device and the groutable solid anchor rod composed of the device according to claim 5, characterized in that: A driving thread is formed in the driving tube, and a guide thread matching the driving thread is arranged at the upper end of the inner support tube. The driving tube is threadedly connected to enable the external tube to move up and down relative to the inner support tube so that the locking protrusion is disengaged from the locking groove.

7. The grouting anchoring device and the groutable solid anchor rod composed of the device according to claim 6, characterized in that: A positioning protrusion is longitudinally protruded on the outer surface of the inner support tube, and a positioning groove corresponding to the positioning protrusion is opened on the inner surface of the outer tube.

8. The grouting anchoring device and the groutable solid anchor rod composed of the device according to claim 7, characterized in that: A support protrusion is provided on the grab bar, and the support protrusion is provided at one end of the grab bar away from the reinforcement support rod; Wherein, when the grab bar is opened relative to the inner support bar, the support protrusion abuts against the inner support tube.

9. The grouting anchoring device and the groutable solid anchor rod composed of the device according to claim 8, characterized in that: A plurality of slurry outlet grooves are provided at equal angles at the bottom of the inner support tube.

10. The grouting anchoring device and the groutable solid anchor rod composed of the device according to claim 9, characterized in that: The fixing device comprises a tray sleeved on the anchoring bolt and a nut mounted on the anchoring bolt; Among them, the grouting cup is installed on the outside of the tray and one end of the grouting cup is connected to the sleeve assembly, the interior of the grouting cup is a conical hole, and a conical grouting plug adapted to the conical hole is installed in the conical hole, the small diameter end of the conical grouting plug extends into the conical hole, the nut is fastened to the large diameter end of the conical grouting plug, and a grouting hole is opened on the side of the grouting cup.

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