Method for replacing built-in resin of anchor rod with high-pressure liquid and anchor rod

Abstract

The invention belongs to the technical field of anchor rod supporting, and particularly relates to a method for replacing built-in resin of an anchor rod through high-pressure liquid and the anchor rod. According to the method, the outer skin of the cartridge is connected with the inner wall of a cavity for containing the cartridge in a sealed mode, after the lower portion of the outer skin of the cartridge is broken, the cavity is divided into a replacement cavity and a liquid medicine channel through the upper portion of the outer skin, fluid is introduced into one side of the replacement cavity, liquid medicine in the cartridge is replaced through extrusion of the fluid, and the liquid medicine flows out through the liquid medicine channel; the anchor rod comprises a rod body assembly and a rod core assembly. The rod body assembly comprises a rod body and a drill bit, and the rod body is filled with the rod core assembly; a first fluid channel is formed between the rod core assembly and the rod body, and a second fluid channel is formed in the rod core assembly; the anchor rod integrates multiple functions of punching, anchoring agent stirring, anchoring and the like, and leap simplification from complex multiple steps to a single process is achieved. By means of the design, the traditional supporting process which needs to be completed in six steps originally is greatly compressed to be completed in one step, and the supporting operation period is greatly shortened.

Description

Technical Field

[0001] The invention belongs to the technical field of anchor rod support, and in particular relates to a method for replacing an anchor rod's built-in resin with high-pressure liquid and an anchor rod. Background Art

[0002] At present, a significant challenge facing my country's coal mining industry is its lack of mechanization and automation, which directly leads to slow tunneling speed and low production efficiency, seriously hindering the further improvement of coal mine production capacity. One of the core problems is the complexity of bolting technology and its high reliance on manual operation, which not only increases the labor intensity of workers, but also significantly reduces construction efficiency. The traditional bolting process is cumbersome, covering multiple steps such as drilling, drilling, manual filling of anchoring agent, bolt installation, anchoring agent mixing and pre-tightening of anchors. The whole process is time-consuming and lengthy, and it is difficult to improve efficiency. It can no longer meet the urgent needs of coal mines for efficient support technology.

[0003] To address this problem, the industry has explored new support methods such as hollow grouting anchors, but in actual applications, it still faces the problem of difficult to accurately control the grouting amount. Improper grouting amount (too much or too little) will have an adverse effect on the support effect, and the inconvenience of operation also limits its widespread promotion and application. Therefore, how to effectively simplify the anchor construction process and improve construction efficiency and support quality has become a key technical problem that needs to be solved urgently in the current coal mining industry. Summary of the invention

[0004] The invention aims to solve the problem that the grouting amount of the built-in resin anchor rod is difficult to accurately control.

[0005] The present invention provides the following technical solution: a method for replacing the built-in resin of an anchor rod with high-pressure liquid, wherein the outer skin of a medicine roll is sealed and connected to the inner wall of a cavity containing the medicine roll, so that after the lower part of the outer skin of the medicine roll is ruptured, the upper part of the outer skin isolates the cavity into a replacement cavity and a medicine liquid channel, and fluid is introduced into one side of the replacement cavity, and the medicine liquid in the medicine roll is replaced by extrusion of the fluid, and the medicine liquid flows out through the medicine liquid channel.

[0006] An anchor rod, using the above-mentioned method of replacing the anchor rod built-in resin with high-pressure liquid, comprises a rod body component and a rod core component;

[0007] The shaft assembly includes a shaft and a drill bit, one end of the shaft is connected to the drill bit, and a water distribution channel of the drill bit is connected to the inside of the shaft;

[0008] The rod core component is loaded in the rod shaft; a first fluid channel is formed between the rod core component and the rod shaft, and a second fluid channel is constructed in the rod core component;

[0009] The inlet of the second fluid channel is used to dock with the core shaft of the drill box, and the outlet of the second fluid channel is connected to the water distribution channel of the drill bit; a plugging piece, a medicine roll, a sharp tool and a stirring channel are arranged in the second fluid channel;

[0010] The inlet of the first fluid channel is located in the second fluid channel outside the blocking member, the outlet of the first fluid channel and the outlet of the stirring channel are interconnected, and a one-way sealing structure is provided in the second fluid channel, the one-way sealing structure closes the outlet of the stirring channel when the fluid in the first fluid channel flows to the water distribution channel of the drill bit, and the one-way sealing structure closes the outlet of the first fluid channel when the fluid in the stirring channel flows to the water distribution channel of the drill bit;

[0011] The second fluid channel includes a blocking piece sealing section and a blocking piece gap section. When the blocking piece is located in the blocking piece sealing section, the second fluid channel is closed. When the blocking piece is located in the blocking piece gap section, the fluid can flow into the second fluid channel through the blocking piece. The medicine roll is located between the blocking piece and the sharp object, and the outer skin of the medicine roll close to the sharp object is sealed and connected to the second fluid channel.

[0012] Furthermore, the rod core assembly includes a guide, a long condition and a ring frame, the inner ring of the ring frame is sealingly connected to the outer skin of the medicine roll, the outer ring of the ring frame is slidingly sealed with the second fluid channel, the guide is slidingly matched with the second fluid channel, the guide is connected to the blocking member, an axial channel is opened on the guide, the long condition is connected between the guide and the ring frame, and the outer skin of the medicine roll is connected to the guide.

[0013] Furthermore, the rod core assembly includes a sealingly connected connecting sleeve, an elastic supporting sleeve and a supporting sleeve, the inner hole of the connecting sleeve is sealingly connected to the outer skin of the medicine roll, the outer wall of the connecting sleeve is in sliding contact with the second fluid channel, and the supporting sleeve is sealingly connected to the second fluid channel.

[0014] Furthermore, the rod core assembly includes a first sleeve, a first long tube and a second long tube, the first sleeve, the first long tube and the second long tube are connected in sequence, the inner diameter of the first long tube is larger than the inner diameter of the first sleeve, the first sleeve serves as a plugging sealing section, the first long tube serves as a plugging gap section, the medicine roll is located in the first long tube, and the spiral structure channel in the second long tube serves as a stirring channel.

[0015] Furthermore, the front section of the second long tube is a stirring channel, and the rear section is inserted with a third long tube. A fourth long tube is nested between the outlet end of the third long tube and the second long tube. There is a sliding sealing section and a clearance fitting section between the fourth long tube and the second long tube. The clearance fitting section is connected to the water distribution channel of the drill bit. The outlet of the first fluid channel is located at the sliding sealing section between the second long tube and the fourth long tube. The outlet end of the fourth long tube is closed, and a lateral hole is opened on the tube wall of the fourth long tube, and the lateral hole is staggered with the outlet of the first fluid channel.

[0016] Furthermore, the shaft assembly also includes a post plate, a hemispherical pad, a first locking sleeve and a second locking sleeve; the first locking sleeve, the second locking sleeve, the hemispherical pad and the post plate are sequentially mounted on the shaft body, the first locking sleeve and the second locking sleeve are screwed into the shaft thread, and the hemispherical pad and the post plate can move freely along the length of the shaft.

[0017] Furthermore, the spiral structure channel in the second long tube is divided into multiple sections, including alternating left-handed sections and right-handed sections.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] The anchor rod integrates multiple functions such as drilling, anchoring agent mixing and anchoring, achieving a leap from complex and multi-step to a single process. Through this design, the traditional support process that originally required six steps to complete has been greatly compressed to one step, greatly shortening the support operation cycle and significantly improving construction efficiency and operation speed. This innovation not only simplifies the operation process, but also has the potential to improve the overall reliability of the support structure by reducing manual intervention and shortening construction time, providing strong support for the safe production and efficient operation of the coal mining industry.

[0020] The anchor has an independent low-pressure water channel and a high-pressure water channel for pushing liquid medicine (resin anchor). The low-pressure water is used for cooling the borehole, and the high-pressure water is used for replacing the resin medicine roll. The two channels can be completely independent. On the one hand, preventing low-pressure water from entering the resin storage cavity can ensure the anchoring quality of the resin anchor; on the other hand, preventing the resin anchor from entering the low-pressure water channel can improve the resin utilization rate and squeeze the resin stored in the cavity into the anchor pores to the maximum extent. By squeezing and replacing the liquid medicine in the medicine roll with high-pressure water, the amount of resin pushed can be controlled more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is the schematic diagram of the general assembly of the anchor rod;

[0022] Figure 2 is a schematic diagram of a shaft assembly;

[0023] Figure 3 is a schematic diagram of a rod core assembly;

[0024] Figure 4 for Figure 3 Sectional view at AA in the middle;

[0025] Figure 5 This is a schematic diagram of the second limiting method of the medicine roll;

[0026] Figure 6 This is a schematic diagram of the water inlet of the low-pressure water channel;

[0027] Figure 7 Schematic diagram of water inlet into the high-pressure water channel.

[0028] In the figure: 100-rod assembly; 101-first locking sleeve; 102-second locking sleeve; 103-hemispherical pad; 104-sticking plate; 105-rod; 106 drill bit; 200-rod core assembly; 201-first casing; 202-blocking piece; 203-first sealing ring; 204-guide; 205-first long tube; 206-medicine roll; 207-long condition; 208-ring frame; 209-second sealing ring; 21 0-sharp tool; 211-spiral structure channel; 212-second long tube; 213-third long tube; 214-fourth long tube; 215-third sealing ring; 216-inlet of first fluid channel; 217-outlet of first fluid channel; 218-axial channel; 219-lateral hole; 220-connecting sleeve; 221-elastic support sleeve; 222-support sleeve; 301-drill sleeve; 302-shaft sleeve; 303-core shaft. DETAILED DESCRIPTION

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Example 1

[0031] A method for replacing the built-in resin of an anchor rod with high-pressure liquid, wherein the outer skin of a medicine coil is sealed and connected to the inner wall of a cavity containing the medicine coil, so that after the lower part of the outer skin of the medicine coil is ruptured, the upper part of the outer skin isolates the cavity into a replacement cavity and a medicine liquid channel, and fluid is introduced into one side of the replacement cavity, and the medicine liquid in the medicine coil is replaced by extrusion of the fluid, and the medicine liquid flows out through the medicine liquid channel.

[0032] Example 2

[0033] like Figure 1 , Figure 2 , Figure 3 As shown: an anchor rod, using the method of replacing the anchor rod built-in resin with high-pressure liquid in Example 1, comprising a rod body component 100 and a rod core component 200;

[0034] The shaft assembly 100 includes a shaft 105 and a drill bit 106 . The shaft 105 is made of standard metal material to ensure its strength and durability. One end of the shaft 105 is connected to the drill bit 106 , and a water distribution channel of the drill bit 106 is connected to the inside of the shaft 105 .

[0035] The shaft assembly 100 also includes a plate 104, a hemispherical pad 103, a first locking sleeve 101 and a second locking sleeve 102; the first locking sleeve 101, the second locking sleeve 102, the hemispherical pad 103 and the plate 104 are sequentially mounted on the shaft 105, the first locking sleeve 101 and the second locking sleeve 102 are threadedly engaged with the shaft 105, and the hemispherical pad 103 and the plate 104 can move freely along the length of the shaft 105.

[0036] The rod core assembly 200 is loaded in the rod shaft 105; a first fluid channel is formed between the rod core assembly 200 and the rod shaft 105, that is, the annular space between the rod core assembly 200 and the rod shaft 105 serves as the first fluid channel, and a second fluid channel is constructed in the rod core assembly 200; the first fluid channel is a low-pressure water channel, which is used for injecting water when drilling holes for the anchor rod, and the second fluid channel is a high-pressure water channel, which uses high-pressure water to squeeze and replace the liquid in the medicine roll.

[0037] The inlet of the second fluid channel is used to connect with the core shaft of the drill box, and the outlet of the second fluid channel is connected to the water distribution channel of the drill bit 106; the second fluid channel is provided with a plug 202, a medicine roll 206, a sharp tool 210 and a stirring channel.

[0038] The inlet 216 of the first fluid channel is located in the second fluid channel outside the blocking member 202. After the core shaft of the drill box is inserted into the second fluid channel, the core shaft blocks the inlet 216 of the first fluid channel, and all the water output from the core shaft enters the second fluid channel. The outlet 217 of the first fluid channel and the outlet of the stirring channel are interconnected. A one-way sealing structure is provided in the second fluid channel. The one-way sealing structure closes the outlet of the stirring channel when the fluid in the first fluid channel flows to the water distribution channel of the drill bit 106. The one-way sealing structure closes the outlet 217 of the first fluid channel when the fluid in the stirring channel flows to the water distribution channel of the drill bit 106.

[0039] The second fluid channel includes a blocking piece sealing section and a blocking piece gap section. When the blocking piece 202 is located in the blocking piece sealing section, the second fluid channel is closed, and water cannot enter the second fluid channel through the blocking piece 202. When the blocking piece 202 is located in the blocking piece gap section, the fluid can flow into the second fluid channel through the blocking piece 202; the medicine roll 206 is located between the blocking piece 202 and the sharp object 210, and the outer skin of the medicine roll 206 close to the sharp object 210 is sealed and connected to the second fluid channel.

[0040] Two options are provided for the connection between the shaft 105 and the drill bit 106: one is to connect tightly by thread, and the other is to fix by welding. As the initial drilling tool, the drill bit 106 is designed with full consideration of economy and practicality. It can be equipped with a slotted drill bit inlaid with alloy to meet general drilling needs; or a cross drill bit can be selected, especially when deeper drilling operations are required, and the best choice can be made according to specific cost control considerations.

[0041] The rod core component 200 is made of non-metallic materials with corrosion resistance, low temperature resistance and high temperature resistance to ensure its stability and durability in various extreme environments.

[0042] There are two limiting modes for the medicine roll 206 in the second fluid channel. The first limiting mode is: the rod core assembly 200 includes a guide 204, a long condition 207 and a ring frame 208. The inner ring of the ring frame 208 is sealed with the outer skin of the medicine roll 206. The outer ring of the ring frame 208 is slidably sealed with the second fluid channel. The guide 204 is slidably matched with the second fluid channel. The guide 204 is connected to the plug 202. An axial channel 218 is opened on the guide 204. High-pressure water flows through the axial channel 218. The guide 204 supports the plug 202. The blocking member 202 is always located at the center of the second fluid channel, the long condition 207 is connected between the guide 204 and the ring frame 208, the long condition 207 is located on the outside of the medicine roll 206, and the outer skin of the medicine roll 206 is connected to the guide 204 to prevent the medicine roll 206 from falling off and possibly causing the outer skin of the medicine roll 206 above the ring frame 208 to rupture due to touching the sharp object 210. High-pressure water can mix with the medicine liquid through the outer skin of the medicine roll 206, and the ring frame 208 and the second fluid channel are sealed by the second sealing ring 209 on the ring frame 208.

[0043] like Figure 5 As shown: The second limiting method is: the rod core assembly 200 includes a sealingly connected connection sleeve 220, an elastic support sleeve 221 and a support sleeve 222, the inner hole of the connection sleeve 220 is sealed with the outer skin of the medicine roll 206, the outer wall of the connection sleeve 220 is in sliding contact with the second fluid channel, and the support sleeve 222 is sealed with the second fluid channel. The support sleeve 222 serves as a protection and limit to prevent the sharp object 210 from puncturing the elastic support sleeve 221 or the medicine roll 206.

[0044] The rod core assembly 200 includes a first sleeve 201, a first long tube 205 and a second long tube 212. The first sleeve 201, the first long tube 205 and the second long tube 212 are connected in sequence. The first sleeve 201, the first long tube 205 and the second long tube 212 are firmly connected by glue bonding. The inner diameter of the first long tube 205 is larger than the inner diameter of the first sleeve 201. The first sleeve 201 is used as a plugging sealing section, and the first long tube 205 is used as a plugging gap section. The plugging 202 and the first sleeve 201 are sealed by a first sealing ring 203. The plugging 202 and the first sleeve 201 are reinforced by glue bonding to effectively prevent water leakage and accidental pushing of the plugging 202 by low-pressure water. The medicine roll 206 is located in the first long tube 205, and the spiral structure channel in the second long tube 212 is used as a stirring channel. The sharp object 210 is fixed in the second long tube 212 by glue.

[0045] The spiral structure channel in the second long tube 212 is divided into multiple sections, including left-handed sections and right-handed sections that are alternately distributed, so that the liquid medicine is fully mixed to ensure its uniformity and use effect.

[0046] The front section of the second long tube 212 is a stirring channel, and the rear section is inserted with a third long tube 213. A fourth long tube 214 is nested between the outlet end of the third long tube 213 and the second long tube 212. There is a sliding sealing section and a clearance fitting section between the fourth long tube 214 and the second long tube 212. The clearance fitting section is connected to the water distribution channel of the drill bit 106. The outlet 217 of the first fluid channel is located at the sliding sealing section between the second long tube 212 and the fourth long tube 214. The outlet end of the fourth long tube 214 is closed, and the fourth long tube 214 and the second long tube 212 are sealed by a third sealing ring 215. A lateral hole 219 is opened on the tube wall of the fourth long tube 214, and the lateral hole 219 is staggered with the outlet 217 of the first fluid channel. When water flows out of the first fluid channel, since the outlet end of the fourth long tube 214 is closed, the water cannot flow back into the stirring channel; when the medicine liquid in the stirring channel flows out, the pressure of the medicine liquid pushes the fourth long tube 214 to move toward the drill bit 106, and the fourth long tube 214 and the second long tube 212 transition from the sliding sealing section to the clearance fitting section. Since the lateral hole 219 on the fourth long tube 214 is staggered with the outlet 217 of the first fluid channel, the fourth long tube 214 closes the outlet 217 of the first fluid channel. When the fourth long tube 214 moves to the lateral hole 219 and reaches the clearance fitting section, the medicine liquid flows out from the lateral hole 219 and flows toward the drill bit 106 through the gap between the fourth long tube 214 and the second long tube 212.

[0047] The shaft 105 adopts a left-handed corrugated thread design. When used in conjunction with the second locking sleeve 102, the second locking sleeve 102 rotates clockwise to move away from the first locking sleeve 101, and the second locking sleeve 102 rotates counterclockwise to move closer to the first locking sleeve 101. Before the anchor drilling operation, the anchor is placed on the drill sleeve 301 of the drilling rig, and the lower surface of the second locking sleeve 102 is close to the bottom surface of the drill sleeve. The drill sleeve 301 rotates under the drive of an external force to transmit the necessary torque. The shaft sleeve 302, as a non-rotating component, is installed concentrically with the drill sleeve 301 and is sealed by a sealing ring to effectively prevent water leakage. The mandrel 303 is installed in the center of the shaft sleeve 302 and can move up and down to provide a water source for the entire system. This system uses the same water circuit to sequentially supply low-pressure water and high-pressure water: low-pressure water is used for drilling operations and cooling, while high-pressure water is used to squeeze and replace the liquid in the medicine roll 206. In addition, the interface between the drill sleeve 301 and the second locking sleeve 102 is designed as an inner hexagonal or inner twelve-square to facilitate connection and operation.

[0048] Anchor bolt workflow:

[0049] Drilling: The drill sleeve 301 rotates counterclockwise, and this movement drives the second locking sleeve 102 to move toward the first locking sleeve 101. When the second locking sleeve 102 contacts the first locking sleeve 101, the first locking sleeve 101 will lock it and restrict its further movement. At this time, the torque transmitted by the second locking sleeve 102 effectively acts on the rod body 105, driving it to perform drilling operations. At the same time, the mandrel 303 is responsible for providing low-pressure water, which is mainly used for cooling during the drilling process. Since the plug 202 and the first sleeve 201 are sealed and fixed, the low-pressure water can flow in through the inlet 216 of the first fluid channel, pass through the first fluid channel, and then flow out from the outlet 217 of the first fluid channel, and finally enter the drill bit 106 and flow out from its side, effectively cooling the drilling area. When the anchor drilling reaches the predetermined depth, that is, when the plate 104 is about to contact the top plate of the tunnel, the drilling operation stops immediately.

[0050] Pushing the medicine roll: After the drilling operation is completed, the mandrel 303 moves upward in the drill sleeve 301 and pushes the plug 202. This action makes the glue that originally fixed the plug 202 ineffective. Subsequently, the mandrel 303 starts to supply high-pressure water and continues to push the plug 202 forward. In this process, the plug 202 drives the guide 204, the long condition 207, the ring frame 208, and the medicine roll 206 to move forward together. When the plug 202 is pushed beyond the range of the size matching with the first sleeve 201, the high-pressure water flows in the gap between the plug 202 and the first long tube 205, and the high-pressure water begins to enter the sealed cavity formed by the medicine roll 206 and the first long tube 205 through the axial channel 218. At this time, the medicine roll 206 is pushed to the position of the sharp object 210 and is scratched, causing the water pressure in the sealed cavity to rise rapidly. This pressure water then squeezes the two kinds of liquid medicine A and B in the medicine roll 206 to flow out, and these liquid medicines then enter the spiral structure channel 211 for sufficient mixing and stirring. The mixed A and B liquid medicines then pass through the third long tube 213, pushing the fourth long tube 214 forward to its top position. During this process, the fourth long tube 214 just closes the outlet 217 of the first fluid channel. Finally, the mixed liquid medicines flow into the drill bit 106 through the lateral hole 219 on the fourth long tube 214.

[0051] Stirring the resin: the core shaft 303 in the drill sleeve 301 is retracted downward, and the drill sleeve 301 continues to rotate counterclockwise to drive the anchor rod to fully stir the resin anchoring agent.

[0052] Tighten the anchor rod: After the mixing is completed, the anchor rod has been fixed by the anchor agent, and the drill sleeve 301 rotates clockwise. At this time, the second locking sleeve 102 moves away from the first locking sleeve 101, and the second locking sleeve 102 pushes the hemispherical pad 103 and the plate 104. The plate 104 contacts the top plate of the tunnel upward and applies a pre-tightening force to the top plate. The process of tightening the anchor rod is completed.

[0053] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for replacing the built-in resin of an anchor rod with high-pressure liquid, characterized in that: The outer skin of the medicine roll is sealed and connected to the inner wall of the cavity containing the medicine roll, so that after the lower part of the outer skin of the medicine roll is broken, the upper part of the outer skin separates the cavity into a replacement cavity and a medicine liquid channel, and a fluid is introduced into one side of the replacement cavity, and the medicine liquid in the medicine roll is replaced by the extrusion of the fluid, and the medicine liquid flows out through the medicine liquid channel.

2. An anchor rod, characterized in that: A method for replacing the built-in resin of an anchor rod by using high-pressure liquid as claimed in claim 1, comprising a rod body component (100) and a rod core component (200); The shaft assembly (100) comprises a shaft (105) and a drill bit (106), one end of the shaft (105) is connected to the drill bit (106), and a water distribution channel of the drill bit (106) is communicated with the interior of the shaft (105); The rod core component (200) is loaded into the rod shaft (105); a first fluid channel is formed between the rod core component (200) and the rod shaft (105), and a second fluid channel is constructed in the rod core component (200); The inlet of the second fluid channel is used to connect with the core shaft of the drill box, and the outlet of the second fluid channel is connected to the water distribution channel of the drill bit (106); the second fluid channel is provided with a blocking member (202), a medicine roll (206), a sharp tool (210) and a stirring channel; The inlet (216) of the first fluid channel is located in the second fluid channel outside the blocking member (202); the outlet (217) of the first fluid channel and the outlet of the stirring channel are interconnected; a one-way sealing structure is provided in the second fluid channel; the one-way sealing structure closes the outlet of the stirring channel when the fluid in the first fluid channel flows toward the water distribution channel of the drill bit (106); and the one-way sealing structure closes the outlet (217) of the first fluid channel when the fluid in the stirring channel flows toward the water distribution channel of the drill bit (106); The second fluid channel comprises a blocking member sealing section and a blocking member gap section. When the blocking member (202) is located in the blocking member sealing section, the second fluid channel is closed. When the blocking member (202) is located in the blocking member gap section, the fluid can flow into the second fluid channel through the blocking member (202); the medicine roll (206) is located between the blocking member (202) and the sharp object (210), and the outer skin of the medicine roll (206) close to the sharp object (210) is sealed and connected to the second fluid channel.

3. An anchor rod according to claim 2, characterized in that: The rod core assembly (200) comprises a guide (204), a long condition (207) and a ring frame (208); the inner ring of the ring frame (208) is sealedly connected to the outer skin of the medicine roll (206); the outer ring of the ring frame (208) is slidingly sealed with the second fluid channel; the guide (204) is slidingly matched with the second fluid channel; the guide (204) is connected to the blocking member (202); an axial channel (218) is opened on the guide (204); the long condition (207) is connected between the guide (204) and the ring frame (208); and the outer skin of the medicine roll (206) is connected to the guide (204).

4. An anchor rod according to claim 2, characterized in that: The rod core assembly (200) comprises a sealingly connected connecting sleeve (220), an elastic supporting sleeve (221) and a supporting sleeve (222); the inner hole of the connecting sleeve (220) is sealingly connected to the outer skin of the medicine roll (206); the outer wall of the connecting sleeve (220) is in sliding contact with the second fluid channel; and the supporting sleeve (222) is sealingly connected to the second fluid channel.

5. An anchor rod according to claim 3 or 4, characterized in that: The rod core assembly (200) comprises a first sleeve (201), a first long tube (205) and a second long tube (212); the first sleeve (201), the first long tube (205) and the second long tube (212) are connected in sequence; the inner diameter of the first long tube (205) is greater than the inner diameter of the first sleeve (201); the first sleeve (201) serves as a plugging sealing section; the first long tube (205) serves as a plugging gap section; the medicine roll (206) is located in the first long tube (205); and the spiral structure channel in the second long tube (212) serves as a stirring channel.

6. An anchor rod according to claim 5, characterized in that: The front section of the second long tube (212) is a stirring channel, and the rear section is inserted with a third long tube (213); a fourth long tube (214) is nested between the outlet end of the third long tube (213) and the second long tube (212); a sliding sealing section and a clearance fitting section exist between the fourth long tube (214) and the second long tube (212); the clearance fitting section is connected to the water distribution channel of the drill bit (106); the outlet (217) of the first fluid channel is located at the sliding sealing section between the second long tube (212) and the fourth long tube (214); the outlet end of the fourth long tube (214) is closed; a lateral hole (219) is opened on the tube wall of the fourth long tube (214); the lateral hole (219) is staggered with the outlet (217) of the first fluid channel.

7. An anchor rod according to claim 2, characterized in that: The shaft assembly (100) further comprises a plate (104), a hemispherical pad (103), a first locking sleeve (101) and a second locking sleeve (102); the first locking sleeve (101), the second locking sleeve (102), the hemispherical pad (103) and the plate (104) are sequentially sleeved on the shaft (105); the first locking sleeve (101) and the second locking sleeve (102) are threadedly engaged with the shaft (105); the hemispherical pad (103) and the plate (104) can freely move along the length of the shaft (105).

8. An anchor rod according to claim 5, characterized in that: The spiral structure channel in the second long tube (212) is divided into multiple sections, including left-handed sections and right-handed sections that are alternately distributed.

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