Anchoring device for a tensioned anchor

Abstract

The utility model discloses an anchor rod anti -pulling locking device relates to geotechnical engineering reinforcing technical field has the advantage that the gasket always keeps perpendicular with the surface of geotechnical body, even contact, and its technical scheme main points are: including main anchor rod and deputy anchor rod, and one end of main anchor rod is equipped with the drill bit, and the other end is equipped with a ball joint, and one end of deputy anchor rod is equipped with the stop gunk plug, and the stop gunk plug is equipped with a bowl groove in and the ball joint adapts, and the ball joint is embedded in bowl groove and is connected with bowl groove rotation, bowl groove top is equipped with the movable slot, and the first connecting head of coaxial arrangement with main anchor rod is equipped on the ball joint, and the second connecting head of coaxial arrangement with deputy anchor rod is equipped on movable slot wall, and the first connecting head is connected with the second connecting head through the outer flexible connecting piece.

Description

Technical Field

[0001] This utility model relates to the field of geotechnical engineering reinforcement technology, specifically to an anchor bolt anti-pull-out locking device. Background Technology

[0002] Anchor bolt technology is a widely used support and reinforcement method in geotechnical engineering. It involves inserting an anchor bolt into a drilled hole and bonding it to the soil and rock mass with concrete grout. Then, a grout stopper, a washer, and a nut are sequentially fitted onto the exposed part of the bolt. The large end face of the grout stopper is flush with the hole opening, the washer is in contact with the surface of the soil and rock mass, and the nut is tightened. The prestress is evenly transferred to the surface of the soil and rock mass through the washer, thereby forming an effective anchoring force for unstable soil and rock mass.

[0003] However, in actual engineering, under long-term dynamic loads (such as traffic vibration, mechanical operation vibration, earthquake), the anchor rods located in the rock and soil are subjected to alternating stress, which causes the rod body to bend and deform, and the pad plate that was originally perpendicular to the rock surface to tilt, the nut to loosen and unscrew, the anchoring force to decrease, and the support effect to be affected. Summary of the Invention

[0004] To address the aforementioned technical shortcomings, the purpose of this utility model is to provide an anchor bolt anti-pull-out locking device, which has the advantage of ensuring that the pad plate always maintains perpendicular and uniform contact with the surface of the rock and soil.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This utility model provides an anchor bolt anti-pull-out locking device, including a main anchor bolt and a secondary anchor bolt. One end of the main anchor bolt is provided with a drill bit, and the other end is provided with a ball joint. One end of the secondary anchor bolt is provided with a grout stop plug. The grout stop plug is provided with a bowl groove that is adapted to the ball joint. The ball joint is embedded in the bowl groove and is rotatably connected to the bowl groove. The bowl groove is provided with a movable groove above it. The spherical joint is provided with a first connector arranged coaxially with the main anchor rod. The movable groove wall is provided with a second connector arranged coaxially with the secondary anchor rod. The first connector and the second connector are connected by an external flexible connector.

[0006] By adopting the above technical solution, the spherical joint and the bowl groove are matched, so that the main anchor and the secondary anchor can be relatively deflected under dynamic load. This reduces the possibility that the anchoring force will be affected by the pressure on the pad caused by the anchor in the traditional rigid connection. Even if the main anchor is deflected due to vibration, the secondary anchor and the external pad will always maintain vertical and uniform contact with the surface of the rock and soil, without affecting the support effect.

[0007] Preferably, the external flexible connector includes a rubber bellows, the two ends of which are respectively nested outside the first connector and the second connector and fixedly connected to the first connector and the second connector.

[0008] Preferably, an inner flexible connector is provided between the first connector and the second connector, and the inner flexible connector is located inside the rubber bellows.

[0009] Preferably, the internal flexible connector includes a hollow rubber sphere, the two ends of which are fixed to the end faces of the first connector and the second connector, respectively.

[0010] Preferably, the stop plug has at least one threaded hole at the position covering the spherical joint, an adjusting screw is installed in the threaded hole, and a pressure block is fixed at one end of the adjusting screw that extends into the bowl groove. The pressure block contacts the outer surface of the spherical joint to form a friction pair with adjustable pressure.

[0011] Preferably, the secondary anchor bolt is fitted with a pad that contacts the soil layer and a nut that contacts the pad, the nut being adapted to the secondary anchor bolt.

[0012] The beneficial effects of this utility model are as follows: the spherical joint and the bowl groove fit together, allowing the main anchor and the secondary anchor to deflect freely within a certain angle, reducing the possibility that the anchoring force is affected by the pressure on the pad caused by the anchor in the traditional rigid connection. Even if the main anchor deflects due to vibration, the secondary anchor and the external pad will always maintain vertical and uniform contact with the surface of the rock and soil, without affecting the support effect. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this embodiment; Figure 2 This is a cross-sectional structural schematic diagram of the slurry stop plug in this embodiment; Figure 3 This embodiment Figure 2 Enlarged structural diagram at point A; Figure 4 This is a schematic diagram illustrating the structure of the rubber sphere in this embodiment.

[0015] Explanation of reference numerals in the attached figures: In the diagram: 1. Main anchor bolt; 2. Secondary anchor bolt; 3. Drill bit; 4. Ball joint; 5. Grout stop plug; 6. Bowl groove; 7. Movable groove; 8. First connector; 9. Second connector; 10. Rubber bellows; 11. Rubber ball; 12. Pad; 13. Nut. Detailed Implementation

[0016] 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.

[0017] An anchor bolt anti-pull-out locking device, such as Figures 1-4 It includes a main anchor rod 1 and a secondary anchor rod 2. One end of the main anchor rod 1 is provided with a drill bit 3 and the other end is provided with a ball joint 4. One end of the secondary anchor rod 2 is provided with a grout stop plug 5. The grout stop plug 5 is provided with a bowl groove 6 that is adapted to the ball joint 4. The ball joint 4 is embedded in the bowl groove 6 and is rotatably connected to the bowl groove 6. A movable groove 7 is provided above the bowl groove 6. A first connector 8 is provided on the ball joint 4, which is coaxially arranged with the main anchor rod 1. A second connector 9 is provided on the wall of the movable groove 7, which is coaxially arranged with the secondary anchor rod 2. The first connector 8 and the second connector 9 are connected by an external flexible connector.

[0018] In the above design, the ball joint 4 and the bowl groove 6 are matched so that the main anchor 1 and the secondary anchor 2 can be deflected relative to each other under dynamic load. This reduces the possibility that the anchoring force of the pad 12 will be affected by the pressure caused by the anchor in the traditional rigid connection. Even if the main anchor 1 is deflected due to vibration, the secondary anchor 2 and the external pad 12 will always maintain perpendicular and uniform contact with the surface of the rock and soil.

[0019] like Figure 2 and Figure 3 As shown, the external flexible connector includes a rubber bellows 10, with both ends of the rubber bellows 10 nested outside the first connector 8 and the second connector 9, respectively, and fixedly connected to the first connector 8 and the second connector 9. The rubber bellows 10 serves as the external flexible connector, allowing the main anchor rod 1 to rotate with the secondary anchor rod 2 without affecting the application of the initial tension force to the main anchor rod 1.

[0020] An inner flexible connector is also provided between the first connector 8 and the second connector 9, and the inner flexible connector is located inside the rubber bellows 10.

[0021] like Figure 4 As shown, the inner flexible connector includes a hollow rubber ball 11, with its two ends fixed to the end faces of the first connector 8 and the second connector 9, respectively. The hollow rubber ball 11 and the outer rubber bellows 10 form a double flexible buffer connection system, which can absorb and dissipate vibration energy from the rock and soil, and also isolate the vibration amplitude transmitted from the main anchor rod 1 to the nut 13 and the pad 12.

[0022] The grout stopper 5 has at least one threaded hole covering the spherical joint 4. An adjusting screw is installed in the threaded hole, and a pressure block is fixed to one end of the adjusting screw that extends into the bowl groove 6. The pressure block contacts the outer surface of the spherical joint 4, forming a friction pair with adjustable pressure. After adjusting to the optimal angle, the construction personnel can tighten the adjusting screw, using the pressure block to act as a damper, which does not affect the force deflection of the main anchor rod 1, and also keeps the main anchor rod 1 and the secondary anchor rod 2 stable during assembly.

[0023] like Figure 1 As shown, the secondary anchor rod 2 is fitted with a pad 12 that contacts the soil layer and a nut 13 that contacts the pad 12. The nut 13 is adapted to the secondary anchor rod 2.

[0024] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An anchor bolt anti-pull-out locking device, characterized in that, It includes a main anchor rod (1) and a secondary anchor rod (2). One end of the main anchor rod (1) is provided with a drill bit (3) and the other end is provided with a ball joint (4). One end of the secondary anchor rod (2) is provided with a grout stop plug (5). The grout stop plug (5) is provided with a bowl groove (6) that is adapted to the ball joint (4). The ball joint (4) is embedded in the bowl groove (6) and is rotatably connected to the bowl groove (6). The bowl groove (6) is provided with a movable groove (7) above it. The ball joint (4) is provided with a first connector (8) arranged coaxially with the main anchor rod (1). The movable groove (7) is provided with a second connector (9) arranged coaxially with the secondary anchor rod (2) on its groove wall. The first connector (8) and the second connector (9) are connected by an external flexible connector.

2. The anchor bolt anti-pull-out locking device as described in claim 1, characterized in that, The external flexible connector includes a rubber bellows (10), the two ends of which are respectively nested outside the first connector (8) and the second connector (9) and are fixedly connected to the first connector (8) and the second connector (9).

3. The anchor bolt anti-pull-out locking device as described in claim 2, characterized in that, An inner flexible connector is provided between the first connector (8) and the second connector (9), and the inner flexible connector is located inside the rubber bellows (10).

4. The anchor bolt anti-pull-out locking device as described in claim 3, characterized in that, The internal flexible connector includes a hollow rubber ball (11), the two ends of which are fixed to the end faces of the first connector (8) and the second connector (9), respectively.

5. The anchor bolt anti-pull-out locking device as described in claim 1, characterized in that, The stop plug (5) has at least one threaded hole at the position covering the ball joint (4). An adjusting screw is installed in the threaded hole. One end of the adjusting screw that extends into the bowl groove (6) is fixed with a pressure block. The pressure block contacts the outer surface of the ball joint (4) to form a friction pair with adjustable pressure.

6. The anchor bolt anti-pull-out locking device as described in claim 1, characterized in that, The secondary anchor (2) is fitted with a pad (12) that contacts the soil layer and a nut (13) that contacts the pad (12). The nut (13) is adapted to the secondary anchor (2).

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