A hollow anchor rod with built-in medicine roll

Abstract

The utility model relates to the technical field of anchor rod, put forward a kind of hollow anchor rod of built-in cartridge, including anchor rod shell, pierce core pole, push rod, resin package, the cavity is arranged in the anchor rod shell, the pierce core pole is arranged in the cavity and the cavity is divided into extrusion cavity and storage cavity, the resin package is arranged in the storage cavity, the push rod is movably arranged in the storage cavity away from one end of the pierce core pole, the pierce core pole one end is conical pierce end and is located close to one end of the storage cavity, the anchor rod shell away from the push rod one end is provided with conical drill bit, the anchor rod shell is provided with the slurry hole that is communicated at the extrusion cavity, the pierce core pole is provided with central passage, and the central passage is used to communicate the extrusion cavity and the storage cavity. Through the above technical scheme, the problem of hollow anchor rod resin preset extrusion effect is not ideal in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of anchor bolt technology, specifically to a hollow anchor bolt with an embedded medicated cartridge. Background Technology

[0002] In tunnel construction, rock bolt support is widely used as an advanced support method due to its advantages such as simple technology and low material consumption. However, existing rock bolts also have certain drawbacks. Rock bolts need to be drilled into the rock wall, and then resin is squeezed from the hollow rock bolt into the cracks in the rock wall. However, when the resin is pre-placed inside the existing rock bolt, if the pre-placement is too close to the end of the rock bolt, the high temperature at the end will affect the extrusion effect. If the pre-placement position is far from the end of the rock bolt, the resin extrusion part is difficult to effectively release from the deepest part of the borehole. Based on the above problems, the structure of the hollow rock bolt needs to be optimized. Utility Model Content

[0003] This invention proposes a hollow anchor bolt with an internal medicine cartridge, which solves the problem of unsatisfactory resin pre-extrusion effect in existing hollow anchor bolts.

[0004] The technical solution of this utility model is as follows:

[0005] A hollow anchor bolt with an internal drug cartridge includes an anchor bolt shell, a piercing core rod, a push rod, and a resin pack. The anchor bolt shell has a cavity, the piercing core rod is disposed within the cavity and divides the cavity into an extrusion cavity and a storage cavity, the resin pack is disposed within the storage cavity, the push rod is movably disposed at the end of the storage cavity away from the piercing core rod, one end of the piercing core rod is a conical piercing end located near the storage cavity, the end of the anchor bolt shell away from the push rod is provided with a conical drill bit, the anchor bolt shell has a slurry outlet hole communicating with the extrusion cavity, and the piercing core rod has a central channel for connecting the extrusion cavity and the storage cavity.

[0006] The conical puncture end is provided with multiple inlets that are connected to the central channel.

[0007] The anchor shell is provided with a grouting hole communicating with the storage cavity, the push rod is provided with a grouting channel at its center, and the push rod is provided with a discharge hole communicating with the grouting channel on its side. The discharge hole can move into the storage cavity with the push rod.

[0008] The hollow anchor rod of the built-in medicine roll also includes a protective cap, which is disposed at the end of the push rod located in the storage cavity, and the protective cap has a degree of freedom of rotation.

[0009] The anchor shell includes a drill bit anchor section, a first connecting section, a storage anchor section, and a second connecting section. The first connecting section is internally threaded with the piercing core rod. The drill bit anchor section is connected to the piercing core rod to form the extrusion cavity. The two ends of the first connecting section are respectively connected to the first connecting section and the second connecting section to form a storage cavity. The push rod is threadedly connected to the second connecting section.

[0010] The working principle and beneficial effects of this utility model are as follows:

[0011] This invention discloses a hollow anchor bolt with an internal medicated cartridge. The structure consists of a piercing core rod, a resin pack, and a push rod arranged sequentially from one end of the drill bit towards the other within a cavity inside the anchor bolt shell. During operation, the conical drill bit of the anchor bolt shell abuts against the rock wall and drills to the target depth. The push rod then extends into the anchor bolt shell, squeezing the resin pack located in the storage cavity. The conical piercing end of the piercing core rod pierces the resin pack, and the resin is squeezed through the central channel on the piercing core rod into the extrusion cavity. The resin is discharged from the grout outlet near the conical drill bit side of the anchor bolt shell, filling the crevices in the rock wall. This allows the resin to be released at a deeper depth within the anchor bolt, improving the filling effect. Attached Figure Description

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] In the diagram: 1. Anchor shell, 2. Piercing core rod, 3. Push rod, 4. Resin pack, 5. Storage chamber, 6. Extrusion chamber, 7. Grout outlet, 8. Central channel, 9. Inlet, 10. Grouting hole, 11. Grouting channel, 12. Discharge hole, 13. Protective cap, 14. Drill bit anchor section, 15. First connecting section, 16. Storage anchor section, 17. Second connecting section. Detailed Implementation

[0015] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0016] like Figure 1As shown in the figure, this embodiment proposes a hollow anchor bolt with an internal drug cartridge. The hollow anchor bolt with an internal drug cartridge includes an anchor bolt shell 1, a piercing core rod 2, a push rod 3, and a resin pack 4. The anchor bolt shell 1 has a cavity. The piercing core rod 2 is disposed in the cavity and divides the cavity into an extrusion cavity 6 and a storage cavity 5. The resin pack 4 is disposed in the storage cavity 5. The push rod 3 is movably disposed at the end of the storage cavity 5 away from the piercing core rod 2. One end of the piercing core rod 2 is a conical piercing end and is located near the storage cavity 5. The end of the anchor bolt shell 1 away from the push rod 3 is provided with a conical drill bit. The anchor bolt shell 1 is provided with a slurry outlet hole 7 communicating with the extrusion cavity 6. The piercing core rod 2 is provided with a central channel 8, which is used to connect the extrusion cavity 6 and the storage cavity 5.

[0017] In this embodiment, a hollow anchor bolt with an internal cartridge is disclosed. The structure of the hollow anchor bolt with an internal cartridge is as follows: within the cavity inside the anchor bolt shell 1, a piercing core rod 2, a resin pack 4, and a push rod 3 are sequentially arranged from one end of the drill bit towards the other. When the hollow anchor bolt with an internal cartridge is working, the conical drill bit of the anchor bolt shell 1 abuts against the rock wall and drills in. The maximum diameter of the conical drill bit can be larger than the diameter of the straight cylindrical part of the anchor bolt shell 1. After drilling to the target depth, the push rod 3 extends into the anchor bolt shell 1 and squeezes the resin pack 4 located in the storage cavity 5. The conical piercing end of the piercing core rod 2 pierces the packaging of the resin pack 4. The resin is squeezed into the extrusion cavity 6 through the central channel 8 on the piercing core rod 2. The resin is discharged from the slurry outlet 7 on the side of the anchor bolt shell 1 near the conical drill bit. The resin is injected into the crevices of the rock wall, thereby enabling the resin to be released at a deeper depth in the anchor bolt and improving the filling effect of the resin.

[0018] The conical piercing end is provided with multiple inlets 9 that are connected to the central channel 8.

[0019] In this embodiment, multiple inlets 9 and a central channel 8 can be provided on the conical puncture end so that the resin has more inlets 9 and the smoothness of the resin entering the central channel 8 can be improved.

[0020] The anchor shell 1 is provided with a grouting hole 10 communicating with the storage cavity 5. The center of the push rod 3 is provided with a grouting channel 11. The side of the push rod 3 is provided with a discharge hole 12 communicating with the grouting channel 11. The discharge hole 12 can move with the push rod 3 into the storage cavity 5.

[0021] In this embodiment, after the resin fills the gaps in the rock wall, secondary grouting is required. Secondary grouting is performed through the grouting channel 11 at the center of the push rod 3. The secondary grout enters the storage cavity 5 through the grouting channel 11 and the discharge hole. After passing through the storage cavity 5, it enters the extrusion cavity 6 through the central channel 8 on the punctured core rod 2, and then enters the gap between the anchor rod and the rock wall through the grouting hole 10 for further filling. In a possible embodiment, a secondary grouting hole 10 can also be provided on the side wall of the storage cavity 5. The secondary grouting hole 10 is located in the middle or far position of the storage cavity 5 away from the punctured core rod 2. The secondary grouting further fills the gap between the anchor rod and the rock wall. After filling, a support plate can be installed on the part of the push rod 3 outside the anchor rod shell 1. After locking, it supports the rock wall and plays an anchoring and supporting role.

[0022] The hollow anchor rod of the built-in medicine roll also includes a protective cap 13, which is disposed at one end of the push rod 3 located in the storage cavity 5, and the protective cap 13 has a degree of freedom of rotation.

[0023] In this embodiment, a protective cap 13 is provided at one end of the push rod 3 located inside the storage cavity 5. The protective cap 13 has a degree of rotational freedom relative to the push rod 3. When the protective cap 13 comes into contact with the resin package 4, the protective cap 13 does not rotate relative to the push rod 3 when it rotates forward, thus protecting the resin package 4.

[0024] The anchor shell 1 includes a drill bit anchor section 14, a first connecting section 15, a storage anchor section 16, and a second connecting section 17. The first connecting section 15 is internally threaded with the piercing core rod 2. The drill bit anchor section 14 is connected to the piercing core rod 2 to form the extrusion cavity 6. The two ends of the first connecting section 15 are respectively connected to the first connecting section 15 and the second connecting section 17 to form the storage cavity 5. The push rod 3 is threadedly connected to the second connecting section 17.

[0025] In this embodiment, the anchor shell 1 is assembled in a split form, and the sections are connected by threaded connections, which facilitates assembly and makes some parts maintainable and reusable. The outer surface of the piercing core rod 2 is provided with threads, part of which is connected to the inside of the first connecting section 15. The other part of the piercing core rod 2 is connected to the inside of the drill bit anchor rod section 14. The two ends of the storage anchor rod section 16 are respectively connected to the first connecting section 15 and the second connecting section 17 to form the storage cavity 5. The first connecting section 15 and the second connecting section 17 are both fixedly connected to the storage anchor rod section 16.

[0026] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A hollow anchor bolt with an embedded medicine cartridge, characterized in that, The hollow anchor bolt with built-in drug cartridge includes an anchor bolt shell (1), a piercing core rod (2), a push rod (3), and a resin pack (4). The anchor bolt shell (1) has a cavity. The piercing core rod (2) is located in the cavity and divides the cavity into an extrusion cavity (6) and a storage cavity (5). The resin pack (4) is located in the storage cavity (5). The push rod (3) is movably located at one end of the storage cavity (5) away from the piercing core rod (2). One end of the piercing core rod (2) is a conical piercing end located near the storage cavity (5). The anchor bolt shell (1) has a conical drill bit at one end away from the push rod (3). The anchor bolt shell (1) has a slurry outlet hole (7) connected to the extrusion cavity (6). The piercing core rod (2) has a central channel (8) for connecting the extrusion cavity (6) and the storage cavity (5).

2. The hollow anchor bolt with built-in drug cartridge as described in claim 1, characterized in that, The conical puncture end is provided with multiple inlets (9) that are connected to the central channel (8).

3. The hollow anchor bolt with built-in drug cartridge as described in claim 2, characterized in that, The anchor shell (1) is provided with a grouting hole (10) connected to the storage cavity (5), the center of the push rod (3) is provided with a grouting channel (11), and the side of the push rod (3) is provided with a discharge hole (12) connected to the grouting channel (11). The discharge hole (12) can move with the push rod (3) into the storage cavity (5).

4. The hollow anchor bolt with built-in drug cartridge according to claim 3, characterized in that, The hollow anchor rod of the built-in medicine roll also includes a protective cap (13), which is disposed at one end of the push rod (3) located in the storage cavity (5) and has a degree of freedom of rotation.

5. The hollow anchor bolt with built-in drug cartridge as described in claim 1, characterized in that, The anchor shell (1) includes a drill bit anchor section (14), a first connecting section (15), a storage anchor section (16), and a second connecting section (17). The first connecting section (15) is internally threaded with the piercing core rod (2). The drill bit anchor section (14) is connected to the piercing core rod (2) to form the extrusion cavity (6). The first connecting section (15) is connected to the first connecting section (15) and the second connecting section (17) at both ends to form the storage cavity (5). The push rod (3) is threadedly connected to the second connecting section (17).

Images