A chamber cavity anchor rod installation guide device

Abstract

The utility model relates to a kind of cavern cavity anchor rod installation guiding device, and it relates to the field of tunnel construction technology.A kind of cavern cavity anchor rod installation guiding device, comprising: fixed base, connecting pipe, guide pipe and plugging cap.The utility model can provide a stable installation foundation by setting fixed base, and by installing connecting pipe and guide pipe, a length-adjustable guiding structure can be formed, effectively guiding the construction of anchor rod, so that anchor rod is aligned with the anchor rod hole of rock section, reduces the difficulty of anchor rod construction, shortens construction time, improves anchor rod construction quality, and guarantees construction progress and safety.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, and in particular to a guide device for installing anchor bolts in a tunnel cavity. Background Technology

[0002] In underground caverns of water conservancy and hydropower projects, after blasting excavation of sections with unfavorable geological conditions, localized rockfalls and collapses often occur at the arch level, forming cavities with a depth of 0.5–3.0 m. Therefore, timely initial support is necessary after excavation to ensure the stability of the surrounding rock.

[0003] The initial support sequence was: initial shotcrete, installation of steel arch frames, wire mesh installation and subsequent shotcrete application, drilling of anchor bolt holes, and installation of anchor bolts. However, for anchor bolt installation in the cavity, after the anchor bolt entered the cavity through the borehole, due to the large distance between the borehole and the rock surface, and the obstruction caused by the concrete after the wire mesh was installed and shotcrete, local rockfalls and collapses within the cavity caused the anchor bolt holes to collapse. Construction workers could not see the specific location of the anchor bolt holes within the cavity, resulting in the anchor bolts not being able to be aligned with the anchor bolt holes in the rock section. It was difficult to successfully install the anchor bolts in one go, requiring multiple installations, which affected the construction progress and the safety of the cavern. Utility Model Content

[0004] To solve or partially solve the problems existing in related technologies, this utility model provides a cavern cavity anchor bolt installation guide device, which can effectively guide the construction of anchor bolts and ensure construction progress and safety.

[0005] This utility model provides a guide device for installing anchor bolts in a cavern cavity, comprising: a fixed base, a connecting pipe, a guide pipe, and a sealing cap;

[0006] The fixed base includes a fixed flange and a fixed threaded sleeve fixedly mounted on the fixed flange;

[0007] The front end of the connecting pipe is provided with an external thread, and the rear end of the connecting pipe is provided with an internal thread. There are several connecting pipes. The first connecting pipe is connected to the fixed threaded sleeve by a threaded connection. Different connecting pipes are connected to each other in sequence by a threaded connection.

[0008] The guide tube has an external guide thread at its rear end, and the guide tube is connected to the connecting tube at the end by means of a threaded connection.

[0009] The front end of the guide tube is provided with a guide opening, which has a trumpet-shaped structure;

[0010] A support rod is hinged to the side wall of the guide tube;

[0011] The sealing cap is installed on the guide opening of the guide tube.

[0012] Optionally, in some embodiments of this utility model:

[0013] The guide tube has a first fixing through hole on the side wall of the guide opening;

[0014] The sealing cap has a second fixing through hole on its side wall;

[0015] The guide tube and the sealing cap are fixedly connected by a pin passing through the second fixing through hole and the first fixing through hole.

[0016] Optionally, in some embodiments of this utility model:

[0017] The top of the sealing cap is equipped with a pull ring.

[0018] Optionally, in some embodiments of this utility model:

[0019] A sealing ring is installed on the inner wall of the sealing cap.

[0020] Optionally, in some embodiments of this utility model:

[0021] The bottom of the fixed flange is equipped with a rubber gasket.

[0022] The technical solution provided by this utility model can include the following beneficial effects:

[0023] This invention provides a stable installation foundation by setting a fixed base, and forms an adjustable-length guide structure by installing connecting pipes and guide pipes. This effectively guides the construction of the anchor bolts, ensuring that the anchor bolts are aligned with the anchor bolt holes in the rock section. This reduces the difficulty of anchor bolt construction, shortens the construction time, improves the quality of anchor bolt construction, and ensures construction progress and safety.

[0024] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit the present invention. Attached Figure Description

[0025] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0026] Figure 1 This is a schematic diagram of an overall structure of the cavity anchor bolt installation guide device in this utility model embodiment;

[0027] Figure 2 This is a structural schematic diagram of the fixed base in an embodiment of this utility model;

[0028] Figure 3 This is a schematic diagram of the connecting pipe in one embodiment of the present utility model;

[0029] Figure 4 This is a schematic diagram of the guide tube in one embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the external structure of the sealing cap in an embodiment of this utility model;

[0031] Figure 6 This is a schematic diagram of the internal structure of the sealing cap in an embodiment of this utility model;

[0032] Figure 7 This is a schematic diagram of the installation structure of the cavity anchor rod installation guide device in an embodiment of this utility model.

[0033] Reference numerals: 1-Fixed base, 101-Fixed flange, 102-Fixed threaded sleeve, 2-Connecting pipe, 201-External thread, 202-Internal thread, 3-Guide pipe, 301-Guide external thread, 302-Guide nozzle, 3021-First fixed through hole, 303-Support rod, 4-Sealing cap, 401-Second fixed through hole, 402-Pull ring, 403-Sealing ring. Detailed Implementation

[0034] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be more thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0035] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] Unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] In underground caverns of water conservancy and hydropower projects, after blasting excavation of sections with unfavorable geological conditions, localized rockfalls and collapses often occur at the arch, forming cavities with a depth of 0.5–3.0 m. Therefore, timely initial support is necessary after excavation to ensure the stability of the surrounding rock.

[0039] The initial support sequence was: initial shotcrete, installation of steel arch frames, wire mesh installation and subsequent shotcrete application, drilling of anchor bolt holes, and installation of anchor bolts. However, for anchor bolt installation in the cavity, after the anchor bolt entered the cavity through the borehole, due to the large distance between the borehole and the rock surface, and the obstruction caused by the concrete after the wire mesh was installed and shotcrete, local rockfalls and collapses within the cavity caused the anchor bolt holes to collapse. Construction workers could not see the specific location of the anchor bolt holes within the cavity, resulting in the anchor bolts not being able to be aligned with the anchor bolt holes in the rock section. It was difficult to successfully install the anchor bolts in one go, requiring multiple installations, which affected the construction progress and the safety of the cavern.

[0040] To address the aforementioned issues, this utility model provides a cavern cavity anchor bolt installation guide device, which can effectively guide the construction of anchor bolts and ensure construction progress and safety.

[0041] The technical solutions of the embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0042] See Figure 1-7 A cavity anchor bolt installation guide device includes: a fixed base 1, a connecting pipe 2, a guide pipe 3, and a sealing cap 4.

[0043] The fixed base 1 includes a fixed flange 101 and a fixed threaded sleeve 102 fixedly installed on the fixed flange 101.

[0044] Specifically: a rubber pad is provided at the bottom of the fixed flange 101.

[0045] In this embodiment, the fixed base 1 is fixed to the actual excavation line rock wall using expansion bolts to provide a stable installation foundation. At the same time, by setting a rubber pad at the bottom, displacement or loosening of the fixed base 1 during installation is reduced.

[0046] The front end of the connecting pipe 2 is provided with an external thread 201, and the rear end of the connecting pipe 2 is provided with an internal thread 202. There are several connecting pipes 2. The first connecting pipe 2 is connected to the fixed threaded sleeve 102 by a threaded connection. Different connecting pipes 2 are connected to each other in sequence by a threaded connection.

[0047] In this embodiment, the number of connecting pipes 2 is determined according to the size of the cavity area. Multiple connecting pipes 2 are connected by threads to quickly form an adjustable-length extension structure, effectively ensuring construction efficiency. Figure 1 As shown, this is to install and fix the two connecting pipes 2.

[0048] The guide tube 3 has a guide external thread 301 at its rear end, and the guide tube 3 is connected to the connecting tube 2 at the end by means of threaded connection; the guide tube 3 has a guide opening 302 at its front end, and the guide opening 302 has a trumpet-shaped structure; a support rod 303 is hinged on the side wall of the guide tube 3.

[0049] In this embodiment, the design of the flared guide spout 302 at the front end can effectively guide the anchor rod into the hole, shorten the installation time and improve accuracy; after the guide spout 302 is installed, one end of the support rod 303 is welded and fixed to the steel arch frame to provide additional stable support.

[0050] The sealing cap 4 is installed on the guide opening 302 of the guide tube 3.

[0051] In this embodiment, the sealing cap 4 is installed on the guide opening 302 to provide a sealing and protection function, preventing debris or foreign objects from entering the cavity, maintaining a clean installation environment, and ensuring smooth insertion of the anchor bolt. The guide opening 302 is temporarily sealed before the wire mesh and shotcrete installation, and removed when the anchor bolt is installed.

[0052] Specifically: a first fixing through hole 3021 is provided on the side wall of the guide opening 302 of the guide tube 3;

[0053] The sealing cap 4 has a second fixing through hole 401 on its side wall;

[0054] The guide tube 3 and the sealing cap 4 are fixedly connected by a pin passing through the second fixing through hole 401 and the first fixing through hole 3021.

[0055] In this embodiment, by setting the first fixing through hole 3021 and the second fixing through hole 401, combined with the through-hole fixing of the pin, a quick connection and fixation between the guide tube 3 and the sealing cover 4 can be achieved.

[0056] Specifically: the top of the sealing cap 4 is provided with a pull ring 402.

[0057] In this embodiment, by providing a pull ring 402 on the top of the sealing cover 4, construction personnel can easily install, adjust, or remove the sealing cover 4, simplifying the operation process.

[0058] Specifically: A sealing ring 403 is installed on the inner wall of the sealing cover 4.

[0059] In this embodiment, by setting a sealing ring 403, the sealing cover 4 and the guide tube 3 can be tightly fitted, preventing gravel and dust from entering the guide device during spraying and avoiding external interference.

[0060] The technical solution provided by this utility model can include the following beneficial effects:

[0061] This invention provides a stable installation foundation by setting a fixed base 1, and forms an adjustable length guide structure by installing a connecting pipe 2 and a guide pipe 3. This effectively guides the construction of the anchor bolt, ensuring that the anchor bolt is aligned with the anchor bolt hole in the rock section. This reduces the difficulty of anchor bolt construction, shortens the construction time, improves the quality of anchor bolt construction, and ensures construction progress and safety.

[0062] Finally, it should be noted that in this document, relationships such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "include," "contain," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0063] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A guide device for installing anchor bolts in a cavern cavity, characterized in that, include: Fixed base (1), connecting pipe (2), guide pipe (3) and sealing cap (4); The fixed base (1) includes a fixed flange (101) and a fixed threaded sleeve (102) fixedly installed on the fixed flange (101). The front end of the connecting pipe (2) is provided with an external thread (201), the rear end of the connecting pipe (2) is provided with an internal thread (202), and there are several connecting pipes (2). The first connecting pipe (2) is connected to the fixed threaded sleeve (102) by a threaded connection. Different connecting pipes (2) are connected sequentially by a threaded connection. The rear end of the guide tube (3) is provided with a guide external thread (301), and the guide tube (3) is connected to the connecting tube (2) located at the end by means of threaded connection; The front end of the guide tube (3) is provided with a guide opening (302), and the guide opening (302) is a trumpet-shaped structure; A support rod (303) is hinged to the side wall of the guide tube (3). The sealing cap (4) is installed on the guide opening (302) of the guide tube (3).

2. The cavern cavity anchor bolt installation guide device according to claim 1, characterized in that: The guide tube (3) has a first fixing through hole (3021) on the side wall at the guide opening (302). The sealing cap (4) has a second fixing through hole (401) on its side wall. The guide tube (3) and the sealing cap (4) are fixedly connected by a pin passing through the second fixed through hole (401) and the first fixed through hole (3021).

3. The cavern cavity anchor bolt installation guide device according to claim 2, characterized in that: The top of the sealing cap (4) is provided with a pull ring (402).

4. The cavern cavity anchor bolt installation guide device according to claim 3, characterized in that: A sealing ring (403) is installed on the inner wall of the sealing cap (4).

5. The cavern cavity anchor bolt installation guide device according to claim 4, characterized in that: A rubber pad is provided at the bottom of the fixed flange (101).

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