Anchor rod structure for roadway support

Abstract

The utility model discloses an anchor rod structure for roadway supporting, and relates to the technical field of roadway supporting. Comprising an anchor rod body, external threads are arranged on the outer surface of the anchor rod body, a threaded sleeve is installed on the anchor rod body close to the lower side threads, the anchor rod body on the upper side of the threaded sleeve is sleeved with a sealing cover, and a pressure monitoring mechanism is arranged on the lower surface of the sealing cover and comprises an annular air bag, a pressing plate, a barometer and a guide pipe. A sealing mechanism is installed on the upper surface of the sealing cover corresponding to the anchor rod body, a drill bit body is installed on the upper surface of the anchor rod body in a threaded mode, and limiting mechanisms are arranged on the left wall and the right wall of the drill bit body. The pressure monitoring function of the anchor rod body is added, so that whether the anchor rod is loosened or not is checked, using is safer, the limiting function of the anchor rod body is added, the anchor rod body is not prone to moving in an anchor hole, the anchoring position of the anchor rod body is more accurate, and the effect is better.

Description

Technical Field

[0001] This utility model relates to the field of tunnel support technology, specifically to an anchor bolt structure for tunnel support. Background Technology

[0002] Anchor bolt support structures are a type of reinforcement and support method used in surface engineering projects such as slopes and deep foundation pits, as well as in underground chamber construction such as tunnels and mining areas. Anchor bolts, made of metal, wood, polymer, or other materials, are driven into pre-drilled holes in the surface rock or the surrounding rock mass. Utilizing the special structure of the head and body of the bolt and the tail support plate, or relying on bonding, they combine the surrounding rock with the stable rock mass, producing a suspension effect, a composite beam effect, or a reinforcement effect to achieve the purpose of support. They have advantages such as low cost, good support effect, simple operation, flexible use, and minimal occupation of construction clearance. Anchor bolts are an important component of roadway support.

[0003] In the existing technology, conventional roadway support anchor bolts have a single function, making it impossible to check whether the anchor bolts are loose, which poses a safety hazard. Furthermore, during the curing process of the adhesive, the anchor bolts are prone to move within the anchor hole, resulting in poor anchoring effect and making them unsuitable for use. Utility Model Content

[0004] This utility model provides an anchor bolt structure for roadway support to solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an anchor bolt structure for roadway support, comprising an anchor bolt body, an external thread on the outer surface of the anchor bolt body, a threaded sleeve installed near the lower thread of the anchor bolt body, a sealing cap fitted on the upper side of the threaded sleeve of the anchor bolt body, a pressure monitoring mechanism provided on the lower surface of the sealing cap, a sealing mechanism installed on the upper surface of the sealing cap at a position corresponding to the anchor bolt body, a drill bit body threadedly installed on the upper surface of the anchor bolt body, and limit mechanisms provided on the left and right walls of the drill bit body.

[0006] Furthermore, both the anchor bolt body and the drill bit body are hollow structures with openings at the top and bottom.

[0007] Furthermore, the pressure monitoring mechanism includes an annular airbag, a pressure plate, a pressure gauge, and a conduit. The annular airbag is fixedly installed on the upper inner wall of the sealing cover. The pressure plate is fixedly installed on the lower surface of the annular airbag. The pressure gauge is fixedly installed on the lower surface of the pressure plate, and the pressure gauge is connected to the annular airbag through a conduit.

[0008] Furthermore, the pressure plate and the sealing cover are mirror images of each other and have a U-shaped structure, with the pressure plate movably fitted onto the outer surface of the sealing cover.

[0009] Furthermore, through holes are provided on both the pressure plate and the sealing cover at positions corresponding to the anchor rod body.

[0010] Furthermore, the sealing mechanism includes a rubber wedge and a rubber waterstop. The rubber wedge is fixedly installed on the upper surface of the sealing plate, and the outer surface of the rubber wedge is provided with a rubber waterstop.

[0011] Furthermore, the limiting mechanism includes a rectangular opening, a check spring, a pull rope, and a limiting ring. Rectangular openings are provided on both the left and right side walls of the drill bit body. Check springs are fixedly installed on the inner walls of the rectangular openings. The check springs are fixedly connected to the pull rope, and the pull rope passes through the anchor rod body and connects to the limiting ring. The limiting ring is located on the lower surface of the anchor rod body.

[0012] Compared with the prior art, this utility model provides an anchor bolt structure for roadway support, which has the following beneficial effects:

[0013] 1. The anchor bolt structure for roadway support, by setting a sealing cover and threaded sleeve in conjunction with a pressure monitoring mechanism, increases the pressure monitoring function of the anchor bolt body, thereby checking whether the anchor bolt is loose, enabling inspection personnel to detect loose anchor bolts in a timely manner, making its use safer.

[0014] 2. The anchor bolt structure for roadway support has an added limiting mechanism to limit the anchor bolt body, making it less likely for the anchor bolt body to move within the anchor hole, thus making the anchoring position of the anchor bolt body more accurate and effective.

[0015] 3. The anchor bolt structure used for roadway support has a sealing mechanism to prevent the anchoring adhesive from flowing out, resulting in a better sealing effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the pressure monitoring mechanism of this utility model;

[0018] Figure 3 This is a cross-sectional view of the drill bit body of this utility model;

[0019] Figure 4 This is a bottom view of the limiting ring of this utility model.

[0020] In the diagram: 1. Anchor bolt body; 2. External thread; 3. Threaded sleeve; 4. Sealing cap; 5. Pressure monitoring mechanism; 501. Annular airbag; 502. Pressure plate; 503. Pressure gauge; 504. Conduit; 6. Sealing mechanism; 601. Rubber wedge; 602. Rubber waterstop; 7. Drill bit body; 8. Limiting mechanism; 801. Rectangular opening; 802. Check spring; 803. Pull rope; 804. Limiting ring; 9. Through hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4 This utility model discloses an anchor bolt structure for roadway support, including an anchor bolt body 1. The outer surface of the anchor bolt body 1 is provided with an external thread 2. A threaded sleeve 3 is installed on the lower thread of the anchor bolt body 1. A sealing cover 4 is fitted on the upper side of the threaded sleeve 3 and the lower surface of the sealing cover 4 is provided with a pressure monitoring mechanism 5. A sealing mechanism 6 is installed on the upper surface of the sealing cover 4 at a position corresponding to the anchor bolt body 1. A drill bit body 7 is threaded on the upper surface of the anchor bolt body 1. Limiting mechanisms 8 are provided on the left and right walls of the drill bit body 7.

[0023] Specifically, both the anchor bolt body 1 and the drill bit body 7 are hollow structures with openings at the top and bottom.

[0024] In this embodiment, the hollow structure of the anchor bolt body 1 and the drill bit body 7 facilitates the flow of anchoring adhesive.

[0025] Specifically, the pressure monitoring mechanism 5 includes an annular airbag 501, a pressure plate 502, a pressure gauge 503, and a conduit 504. The annular airbag 501 is fixedly installed on the upper inner wall of the sealing cover 4. The pressure plate 502 is fixedly installed on the lower surface of the annular airbag 501. The pressure gauge 503 is fixedly installed on the lower surface of the pressure plate 502, and the pressure gauge 503 is connected to the annular airbag 501 through the conduit 504.

[0026] In this embodiment, the pressure plate 502 moves upward with the threaded sleeve 3, so that the pressure plate 502 and the sealing cover 4 press the annular airbag 501 tightly. At this time, the gas in the annular airbag 501 enters the pressure gauge 503 through the conduit 504. The pressure gauge 503 monitors the pressure of the annular airbag 501. When the anchor rod body 1 loosens downward, the threaded sleeve 3 moves downward with the anchor rod body 1. At this time, the pressure applied by the pressure plate 502 to the annular airbag 501 decreases, and the pressure value of the pressure gauge 503 decreases, indicating that the anchor rod body 1 has loosened downward.

[0027] Specifically, the pressure plate 502 and the sealing cover 4 are mirror images of each other and have a U-shaped structure, and the pressure plate 502 is movably sleeved on the outer surface of the sealing cover 4.

[0028] In this embodiment, the inner wall of the pressure plate 502 moves up and down along the outer surface of the sealing cover 4, so that the up and down movement of the pressure plate 502 is stable.

[0029] Specifically, through holes 9 are provided on the pressure plate 502 and the sealing cover 4 at positions corresponding to the anchor rod body 1.

[0030] In this embodiment, the through hole 9 meets the requirement that the anchor body 1 can pass through the pressure plate 502 and the sealing cover 4.

[0031] Specifically, the sealing mechanism 6 includes a rubber wedge 601 and a rubber waterstop 602. The rubber wedge 601 is fixedly installed on the upper surface of the sealing plate, and the rubber waterstop 602 is provided on the outer surface of the rubber wedge 601.

[0032] In this embodiment, the rubber wedge 601 and the rubber waterstop 602 seal the anchor hole, effectively preventing the anchoring adhesive from flowing.

[0033] Specifically, the limiting mechanism 8 includes a rectangular opening 801, a check spring 802, a pull rope 803, and a limiting ring 804. Rectangular openings 801 are provided on both the left and right side walls of the drill bit body 7. Check springs 802 are fixedly installed on the inner walls of the rectangular openings 801. The check springs 802 are fixedly connected to the pull ropes 803. The pull ropes 803 pass through the anchor rod body 1 and are connected to the limiting rings 804. The limiting rings 804 are located on the lower surface of the anchor rod body 1.

[0034] In this implementation plan, the pull rope 803 on the limiting ring 804 is cut off, and the check spring 802 loses the tension of the pull rope 803 and unfolds to the outside of the drill bit body 7, so that the check spring 802 is pressed against the inner wall of the anchor hole, thereby achieving the effect of limiting the drill bit body 7.

[0035] During use, the anchor bolt body 1 is drilled into the top of the roadway through the drill bit body 7. After the anchor bolt body 1 is drilled into the corresponding position, the pull rope 803 on the limiting ring 804 in the limiting mechanism 8 is cut. The check spring 802 loses the tension of the pull rope 803 and unfolds outward from the drill bit body 7, so that the check spring 802 presses against the inner wall of the anchor hole, achieving the effect of limiting the drill bit body 7. This causes the upper surface of the sealing cover 4 to fit against the inner wall of the roadway. The sealing cover 4 is limited, making it easier for the pressure detection mechanism 5 to be squeezed. The threaded sleeve 3 moves spirally upward along the anchor bolt body 1. The threaded sleeve 3 pushes the pressure plate 502 in the pressure monitoring mechanism 5 upward, so that the pressure plate 502 and the sealing cover 4 press the annular airbag 501 tightly. At this time, the annular airbag 501 is closed. Gas inside the annular airbag 501 enters the pressure gauge 503 through the conduit 504. The pressure gauge 503 obtains a pressure value and monitors the pressure of the annular airbag 501. When the anchor bolt body 1 loosens downward, the threaded sleeve 3 moves downward with the anchor bolt body 1. At this time, the pressure applied to the annular airbag 501 by the pressure plate 502 decreases, and the pressure value of the pressure gauge 503 decreases, indicating that the anchor bolt body 1 has loosened downward. This adds the pressure monitoring function of the anchor bolt body 1, thereby checking whether the anchor bolt is loose, so that the inspection personnel can detect the anchor bolt loosening in time and deal with it in time, making it safer to use. In addition, the sealing mechanism 6 is inserted into the anchor hole, so it is not easy to leak during subsequent grouting.

[0036] In summary, the anchor bolt structure for roadway support adds a pressure monitoring function to the anchor bolt body 1, thereby allowing for inspection of whether the anchor bolt is loose, making it safer to use. It also adds a limiting function to the anchor bolt body 1, making it less likely to move within the anchor hole, resulting in a more accurate anchoring position and better performance.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A roadway support anchor structure, comprising an anchor body (1), characterized in that: The outer surface of the anchor body (1) is provided with an external thread (2). The anchor body (1) is threaded with a threaded sleeve (3) near the lower thread. The anchor body (1) above the threaded sleeve (3) is fitted with a sealing cap (4). The lower surface of the sealing cap (4) is provided with a pressure monitoring mechanism (5). The upper surface of the sealing cap (4) is provided with a sealing mechanism (6) corresponding to the position of the anchor body (1). The upper surface of the anchor body (1) is threaded with a drill bit body (7). The left and right walls of the drill bit body (7) are provided with limit mechanisms (8).

2. The anchor bolt structure for roadway support according to claim 1, characterized in that: Both the anchor bolt body (1) and the drill bit body (7) are hollow structures with openings at the top and bottom.

3. The anchor bolt structure for roadway support according to claim 1, characterized in that: The pressure monitoring mechanism (5) includes an annular airbag (501), a pressure plate (502), a pressure gauge (503), and a conduit (504). The annular airbag (501) is fixedly installed on the upper inner wall of the sealing cover (4). The pressure plate (502) is fixedly installed on the lower surface of the annular airbag (501). The pressure gauge (503) is fixedly installed on the lower surface of the pressure plate (502). The pressure gauge (503) is connected to the annular airbag (501) through the conduit (504).

4. The anchor bolt structure for roadway support according to claim 3, characterized in that: The pressure plate (502) and the sealing cover (4) are mirror images of each other and have a U-shaped structure, and the pressure plate (502) is movably sleeved on the outer surface of the sealing cover (4).

5. The anchor bolt structure for roadway support according to claim 3, characterized in that: Through holes (9) are provided on the pressure plate (502) and the sealing cover (4) at positions corresponding to the anchor rod body (1).

6. The anchor bolt structure for roadway support according to claim 1, characterized in that: The sealing mechanism (6) includes a rubber wedge (601) and a rubber waterstop (602). The rubber wedge (601) is fixedly installed on the upper surface of the sealing plate, and the outer surface of the rubber wedge (601) is provided with a rubber waterstop (602).

7. The anchor bolt structure for roadway support according to claim 1, characterized in that: The limiting mechanism (8) includes a rectangular opening (801), a check spring (802), a pull rope (803), and a limiting ring (804). The left and right side walls of the drill bit body (7) are provided with rectangular openings (801). Check springs (802) are fixedly installed on the inner walls of the rectangular openings (801). The check springs (802) are fixedly connected to the pull ropes (803). The pull ropes (803) pass through the anchor rod body (1) and are connected to the limiting rings (804). The limiting rings (804) are located on the lower surface of the anchor rod body (1).

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