A new portable tension and compression anchor rod

Abstract

The utility model discloses a novel portable tension and pressure anchor rod, including anchor rod main part, locking and stop grouting unit and anchoring unit, the outside of anchor rod main part front end is installed with locking and stop grouting unit, the rear end of anchor rod main part is installed with anchoring unit, anchor rod main part and locking and stop grouting unit are coaxial, locking and stop grouting unit includes fastening nut, the rear end surface of fastening nut is installed with arcuate backing plate, the rear of arcuate backing plate is equipped with first stop grouting plug, the inboard of first stop grouting plug both ends all is installed with first spring, the rear of first stop grouting plug is installed with second stop grouting plug, anchoring unit includes anchor tool plate, the middle part between anchor tool plate and anchor rod main part is installed with rotary hinge, and the bottom between anchor tool plate and anchor rod main part is equipped with second spring. The utility model discloses through to the anchor rod carries out multistage type assembly, can portable use, and it is convenient for stop grouting operation and carries out axial limitation after grouting solidification.

Description

Technical Field

[0001] This utility model relates to the field of anchor bolt technology, specifically a novel portable tension-compression anchor bolt. Background Technology

[0002] An anchor is a rod system used for the reinforcement of rock and soil. An anchor consists of a rod body (steel strand, steel bar, etc.), grout, anchor, sleeve and other components. The rod body is bonded to the rock and soil through grouting to form an anchored section and a free section. Prestress is applied to combine the surrounding rock with the stable rock mass to form a composite to improve the bearing capacity. The longitudinal tension overcomes the low tensile strength of the rock and soil, enhances the cohesion and internal friction angle of the surrounding rock, and forms an overall stable rock zone.

[0003] Existing tension-compression anchors are inconvenient to assemble and disassemble, which affects portability, and are also inconvenient for axial restraint after grouting; therefore, they do not meet the current requirements. To address this, we propose a new type of portable tension-compression anchor. Utility Model Content

[0004] The purpose of this utility model is to provide a new type of portable tension-compression anchor bolt, so as to solve the problems mentioned in the background art that the existing tension-compression anchor bolts are inconvenient to disassemble and assemble during use, thus affecting portability, and are also inconvenient to axially limit after grouting.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel portable tension-compression anchor bolt, comprising an anchor bolt body, a locking and grout-stopping unit, and an anchoring unit. The locking and grout-stopping unit is installed on the outer side of the front end of the anchor bolt body, and the anchoring unit is installed on the rear end of the anchor bolt body. The anchor bolt body and the locking and grout-stopping unit are coaxial. The locking and grout-stopping unit includes a fastening nut. An arched pad is installed on the rear end face of the fastening nut. A first grout-stopping plug is provided behind the arched pad. A first spring is installed on the inner side of both ends of the first grout-stopping plug. A second grout-stopping plug is installed behind the first grout-stopping plug.

[0006] The anchoring unit includes an anchor plate, a rotating hinge is installed between the middle of the anchor plate and the anchor rod body, and a second spring is provided between the bottom end of the anchor plate and the anchor rod body.

[0007] Preferably, the anchor bolt body consists of a free section and an anchor bolt fixed section, which are coaxial and fixedly connected.

[0008] Preferably, the arched pad, the second grout stopper, and the two first springs are all fitted and slidably on the outside of the free section of the anchor rod. The two ends of the first grout stopper are connected to the arched pad and the second grout stopper through the first springs. The two first springs are installed symmetrically with respect to the first grout stopper. The free section of the anchor rod is connected to the fastening nut by threads.

[0009] Preferably, the rear end of the anchor bolt anchoring section is rotatably connected to the middle part of the anchor plate via a rotary hinge, and both ends of the second spring are fixedly connected to the bottom end of both the anchor bolt anchoring section and the anchor plate, and the second spring is in a compressed state.

[0010] Preferably, a grouting cavity is provided on the outer side of the anchoring section of the anchor bolt between the second grout stop plug and the anchor plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. In this utility model, the anchor rod body drives the anchoring unit to be inserted into the borehole and pulled in the opposite direction. Then, the anchoring section of the anchor rod drives the anchor plate to swing counterclockwise under the elastic support of the second spring through the rotating hinge. Then, the anchor rod body is locked with the inner wall of the borehole through the anchor plate to maintain the unidirectional stability of the anchor rod body.

[0013] 2. This utility model involves installing a locking and grout-stopping unit, rotating the fastening nut on the outside of the free section of the anchor rod, and locking the arched pad. This allows the arched pad to elastically press the second grout-stopping plug through the first grout-stopping plug and two first springs, ensuring stable sealing of the grout by the second grout-stopping plug. The second grout-stopping plug achieves the grout-stopping effect, and the arched pad and anchoring unit maintain the axial stability of the anchor rod body. After the grout has solidified, the anchor rod body can effectively maintain a high-strength connection with the soil and rock layer through the locking and grout-stopping unit and the anchoring unit. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the anchor plate of this utility model in the working state;

[0016] Figure 3 This is a schematic diagram of the anchor bolt body of this utility model after grouting and curing.

[0017] In the diagram: 1. Anchor bolt body; 2. Anchor bolt free section; 3. Anchor bolt anchoring section; 4. Locking and grout-stopping unit; 5. Fastening nut; 6. Arched pad; 7. First spring; 8. First grout-stopping plug; 9. Second grout-stopping plug; 10. Anchoring unit; 11. Rotating hinge; 12. Anchor plate; 13. Second spring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Please see Figure 1 The present invention provides an embodiment of a novel portable tension-compression anchor bolt, comprising an anchor bolt body 1, a locking and grout-stopping unit 4, and an anchoring unit 10. The anchor bolt body 1 is composed of an anchor bolt free section 2 and an anchor bolt anchoring section 3, which are coaxial and fixedly connected. The locking and grout-stopping unit 4 and the anchoring unit 10 facilitate the axial stability and anchoring effect of the anchor bolt body 1.

[0020] Please see Figure 1 and Figure 2 A locking and grout-stopping unit 4 is installed on the outer side of the front end of the anchor bolt body 1. The anchor bolt body 1 and the locking and grout-stopping unit 4 are coaxial. The locking and grout-stopping unit 4 includes a fastening nut 5. An arched pad 6 is installed on the rear end face of the fastening nut 5. A first grout-stopping plug 8 is provided behind the arched pad 6. A first spring 7 is installed on the inner side of both ends of the first grout-stopping plug 8. A second grout-stopping plug 9 is installed behind the first grout-stopping plug 8. The arched pad 6, the second grout-stopping plug 9 and the two first springs 7 are all fitted and slid on the outer side of the free section 2 of the anchor bolt. The two ends of the first grout-stopping plug 8 are connected to the arched pad 6 and the second grout-stopping plug 9 through the first springs 7. The two first springs 7 are symmetrically installed relative to the first grout-stopping plug 8. The free section 2 of the anchor bolt is connected to the fastening nut 5 by threads. The arched pad 6 elastically presses the second grout-stopping plug 9 through the first grout-stopping plug 8 and the two first springs 7 to keep the second grout-stopping plug 9 stably sealing the grout. Thus, the second grout-stopping plug 9 can achieve the grout-stopping effect.

[0021] Please see Figures 1 to 3 An anchoring unit 10 is installed at the rear end of the anchor bolt body 1. The anchoring unit 10 includes an anchor plate 12. A rotating hinge 11 is installed between the middle of the anchor plate 12 and the anchor bolt body 1. A second spring 13 is provided between the bottom end of the anchor plate 12 and the anchor bolt body 1. The rear end of the anchor bolt anchoring section 3 is rotatably connected to the middle of the anchor plate 12 through the rotating hinge 11. Both ends of the second spring 13 are fixedly connected to the bottom end of the anchor bolt anchoring section 3 and the anchor plate 12. The second spring 13 is in a compressed state. A grouting cavity is provided on the outer side of the anchor bolt anchoring section 3 between the second grout stop plug 9 and the anchor plate 12. The axial stability of the anchor bolt body 1 is maintained by the arched pad 6 and the anchoring unit 10. After the grout has solidified, the anchor bolt body 1 can effectively maintain a high-strength connection with the soil and rock layer by locking the grout stop unit 4 and the anchoring unit 10.

[0022] In summary, during construction, a hole is drilled at the construction location, with the hole size being twice the diameter of the anchor rod body 1. After cleaning the debris from the hole, the anchor rod body 1 and the anchoring unit 10 are inserted into the hole. After the anchor rod body 1 is installed, it is pulled in the opposite direction. At this time, the anchor rod anchoring section 3 drives the anchor plate 12 to swing counterclockwise under the elastic support of the second spring 13 through the rotating hinge 11. The anchor rod body 1 is then kept stable in one direction by the anchor plate 12 and the inner wall of the hole. Then, micro-expansion cement or anchoring agent is injected into the grouting cavity between the anchor rod anchoring section 3, which is located between the second grout stop plug 9 and the anchor plate 12, and the soil layer. After the grout completely covers the anchor rod anchoring section 3, the locking grout stop unit 4 is installed.

[0023] Specifically, the second grout stop plug 9, two first springs 7, an arched pad 6, and a fastening nut 5 are sequentially fitted onto the outside of the free section 2 of the anchor rod and installed into the borehole. Both ends of the first grout stop plug 8 are connected to the arched pad 6 and the second grout stop plug 9 through the first springs 7. At this time, the fastening nut 5 is rotated on the outside of the free section 2 of the anchor rod to lock the arched pad 6, so that the arched pad 6 can elastically press the second grout stop plug 9 through the first grout stop plug 8 and the two first springs 7, keeping the second grout stop plug 9 stably sealing the grout. Thus, the second grout stop plug 9 can achieve the grout-stopping effect, and the axial stability of the anchor rod body 1 is maintained by the arched pad 6 and the anchoring unit 10. After the grout has solidified, the anchor rod body 1 can effectively maintain a high-strength connection with the soil and rock layer by locking the grout stop unit 4 and the anchoring unit 10.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A novel portable tension-compression anchor bolt, comprising an anchor bolt body (1), a locking and grout-stopping unit (4), and an anchoring unit (10), characterized in that: A locking and grout-stopping unit (4) is installed on the outer side of the front end of the anchor rod body (1), and an anchoring unit (10) is installed at the rear end of the anchor rod body (1). The anchor rod body (1) and the locking and grout-stopping unit (4) are coaxial. The locking and grout-stopping unit (4) includes a fastening nut (5). An arched pad (6) is installed on the rear end face of the fastening nut (5). A first grout-stopping plug (8) is provided behind the arched pad (6). A first spring (7) is installed on the inner side of both ends of the first grout-stopping plug (8). A second grout-stopping plug (9) is installed behind the first grout-stopping plug (8). The anchoring unit (10) includes an anchor plate (12), a rotating hinge (11) is installed between the middle part of the anchor plate (12) and the anchor body (1), and a second spring (13) is provided between the bottom end of the anchor plate (12) and the anchor body (1).

2. The novel portable tension / compression anchor bolt according to claim 1, characterized in that: The anchor body (1) is composed of the free section (2) and the anchoring section (3), which are coaxial and fixedly connected.

3. A novel portable tension / compression anchor bolt according to claim 2, characterized in that: The arched pad (6), the second grout stopper (9), and the two first springs (7) are all fitted and slid on the outside of the free section (2) of the anchor rod. The two ends of the first grout stopper (8) are connected to the arched pad (6) and the second grout stopper (9) through the first springs (7). The two first springs (7) are symmetrically installed relative to the first grout stopper (8). The free section (2) of the anchor rod is connected to the fastening nut (5) by threads.

4. A novel portable tension / compression anchor bolt according to claim 3, characterized in that: The rear end of the anchor bolt anchoring section (3) is rotatably connected to the middle part of the anchor plate (12) through a rotating hinge (11). The two ends of the second spring (13) are fixedly connected to the bottom end of both the anchor bolt anchoring section (3) and the anchor plate (12). The second spring (13) is in a compressed state.

5. A novel portable tension / compression anchor bolt according to claim 4, characterized in that: The outer side of the anchor bolt anchoring section (3) is provided with a grouting cavity between the second grout stop plug (9) and the anchor plate (12).

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