Recyclable anchor rod and construction technology thereof

Abstract

The invention relates to the technical field of anchor rods, and discloses a recoverable anchor rod and a construction technology thereof.The recoverable anchor rod comprises a bearing seat capable of being placed in an anchor hole; the anchor bar is in threaded connection with the bearing seat; the abutting seat is arranged on the anchor bar in a sleeving mode and used for abutting against an anchored structure; the locking cap is in threaded connection with the end, away from the bearing seat, of the anchor bar and used for abutting against the side, away from the anchored structure, of the abutting seat; the casing pipe is arranged on the outer wall of the anchor bar in a sleeving mode and clamped between the bearing base and the abutting base at the same time; the drill bits move in the bearing seat in the radial direction of the bearing seat, and the multiple drill bits are arranged in the circumferential direction of the bearing seat at intervals; and the linkage piece is arranged on the anchor bar and located in the bearing seat so as to drive the drill bit to move out of the bearing seat to drill into the inner wall of the anchor hole when the anchor bar moves in the bearing seat in a threaded mode. The grouting effect can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of anchor rods, and in particular to a recyclable anchor rod and a construction process thereof. Background Art

[0002] As a supporting structure, anchor rods are widely used in engineering scenarios such as foundation reinforcement and foundation pit reinforcement. The recovery of anchor rods can reduce the construction obstacles in subsequent projects after the completion of the foundation pit project.

[0003] Existing recyclable anchor rods usually include a bearing body, a tendon body, a sleeve, a plugging plate and a nut. The tendon body is threadedly connected to the bearing body, the sleeve is sleeved on the outer wall of the tendon body, the plugging plate is sleeved on the tendon body, and the nut is threadedly connected to the tendon body. When installing the anchor rod, an anchor hole is first opened in the anchored structure, and then the combined bearing body, tendon body and sleeve are placed in the anchor hole, and then grouting is performed in the anchor hole, so that the sleeve is fixed to the anchored structure through the solidified slurry.

[0004] During grouting, the pressure of grouting will push the bearing body to move in the anchor hole, causing the anchor rod to move and shake in the axial direction of the anchor hole during grouting, which can easily affect the grouting effect. Summary of the invention

[0005] In order to improve the grouting effect, the present application provides a recyclable anchor rod and a construction process thereof.

[0006] In a first aspect, the present application provides a recyclable anchor rod, which adopts the following technical solution: A retrievable anchor rod, comprising: A bearing seat capable of being placed in the anchor hole; Anchor bars, threadedly connected to the bearing seat; A pressing seat, sleeved on the anchor bar, used for pressing the anchored structure; A locking cap, threadedly connected to one end of the anchor bar away from the bearing seat, and used to abut against a side of the pressing seat away from the anchored structure; A sleeve, sleeved on the outer wall of the anchor bar, and clamped between the bearing seat and the pressing seat; a drill bit, which moves in the bearing seat along the radial direction of the bearing seat, and a plurality of drill bits are arranged at intervals along the circumference of the bearing seat; and A linkage member is arranged on the anchor bar and located in the bearing seat, so as to drive the drill bit to move out of the bearing seat and drill into the inner wall of the anchor hole when the anchor bar thread moves in the bearing seat.

[0007] By adopting the above technical solution, the anchor bar pushes the drill bit to move radially along the bearing seat and drill into the inner wall of the anchor hole through the linkage part, thereby increasing the consolidation force between the anchor rod and the inner wall of the anchor hole, improving the stability and bearing capacity of the anchor rod, so that the anchor rod is not easy to shake during grouting, thereby improving the grouting effect.

[0008] Optionally, the linkage member is arranged at the end of the anchor bar, and the linkage member forms a slope surface for all the drill bits to abut against one end of the anchor bar. When the anchor bar moves in the bearing seat, the linkage member pushes the drill bits to move radially along the bearing seat through the slope surface.

[0009] By adopting the above technical solution, a linkage piece is arranged at the end of the anchor bar, and a slope surface is formed to push the drill bit to move radially along the bearing seat, thereby realizing the drilling function of the drill bit.

[0010] Optionally, the drill bit includes a moving section and a spike section in sequence along a direction away from the slope surface, the spike section faces the outside of the receiving seat, and the free end of the moving section abuts against the slope surface.

[0011] By adopting the above technical solution, the drill bit includes a moving section and a spike section, and the spike section faces the outside of the bearing seat. The spike section faces the outside of the bearing seat, which helps the drill bit to drill into the inner wall of the anchor hole more effectively.

[0012] Optionally, the drill bit has a drill bit that spirally extends from the outer wall of the spike section to the outer wall of the moving section, and a guide cavity is formed between two adjacent layers of blades of the drill bit itself. A guide head extending into the guide cavity is fixed in the bearing seat, so that the drill bit rotates synchronously when moving toward the outside of the bearing seat.

[0013] By adopting the above technical solution, the drill bit has a drill cutter that spirally extends from the outer wall of the spike section to the outer wall of the moving section, which not only enhances the cutting ability of the drill bit, but also realizes the synchronous rotation of the drill bit during the movement process through the cooperation of the guide cavity and the guide head, thereby further improving the drilling efficiency and consolidation effect of the drill bit.

[0014] Optionally, a limiting shaft is inserted into the bearing seat, the limiting shaft is parallel to the anchor bar, and the limiting shaft is threadedly penetrated into the pressure seat.

[0015] By adopting the above technical solution, by inserting the limiting shaft on the bearing seat and simultaneously threading it through the pressure seat, the bearing seat is effectively restricted from rotating during the movement of the anchor thread, thereby improving the stability of the bearing seat when the anchor moves.

[0016] Optionally, two limit axes are symmetrically arranged along the anchor bar.

[0017] By adopting the above technical solution, two limiting shafts are symmetrically arranged along the anchor bar, which further improves the effect of limiting the bearing seat by the limiting shaft.

[0018] Optionally, the limiting shaft is hollow inside, and a grout outlet is formed at one end of the limiting shaft close to the bearing seat, so that grout is injected into the anchor hole through the limiting shaft during grouting.

[0019] By adopting the above technical solution, the interior of the limiting shaft is hollow, and a slurry outlet is formed at one end close to the bearing seat. During grouting, grouting is injected into the anchor hole through the limiting shaft, and the limiting shaft is gradually pulled out during the grouting process, thereby achieving continuity and uniformity of the grouting process and improving the grouting effect.

[0020] Optionally, the pressure seat includes a first pressure ring and a second pressure ring, the first pressure ring is coaxially sleeved with the second pressure ring, the first pressure ring can also move axially relative to the second pressure ring, and the outer diameter of the second pressure ring is smaller than the inner diameter of the anchor hole, the outer diameter of the first pressure ring is larger than the inner diameter of the anchor hole, and the anchor bar is passed through the second pressure ring.

[0021] By adopting the above technical solution, the movement of the second pressure ring relative to the first pressure ring can enable the first pressure ring to abut against the outer surface of the anchored structure, and the second pressure ring can continue to move into the anchor hole to clamp the sleeve between the second pressure ring and the bearing seat, thereby improving the sealing between the sleeve and the pressure seat and the bearing seat.

[0022] Optionally, a stroke portion is provided on an outer wall of the second pressure ring, and a stroke groove is provided on an inner wall of the first pressure ring for the stroke portion to move in a direction parallel to the axial direction of the second pressure ring.

[0023] By adopting the above technical solution, the cooperation between the stroke portion and the stroke groove can guide the movement of the second pressure ring relative to the first pressure ring.

[0024] In a second aspect, the present application provides a construction process for a recyclable anchor rod, which adopts the following technical solution: A construction process for a recyclable anchor rod comprises the following steps: S1, using a drilling device to drill holes in the anchored structure to form anchor holes; S2, placing the anchor rod into the anchor hole so that the bearing seat abuts against the inner end wall of the anchor hole; S3, the anchor bar is threadedly moved deep into the anchor hole, the anchor bar pushes the drill bit out of the bearing seat through the linkage and drills into the inner wall of the anchor hole, and then the locking cap is threadedly moved to press the pressing seat tightly against the outer surface of the anchored structure; S4, grouting into the anchor hole.

[0025] In summary, the present application includes at least one of the following beneficial effects: 1. Before grouting, the drill bit moves radially along the bearing seat and drills into the inner wall of the anchor hole, which increases the contact area and consolidation force between the anchor rod and the inner wall of the anchor hole, significantly improves the bearing capacity and stability of the anchor rod, so that the anchor rod is not easy to shake during grouting, and improves the grouting effect; 2. The cooperation between the spiral drill cutter and the guide cavity and the guide head of the drill bit realizes the synchronous rotation of the drill bit during the movement, further improving the drilling efficiency and consolidation effect of the drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application; Figure 2 yes Figure 1 Sectional view at AA in the middle; Figure 3 yes Figure 2 A schematic diagram of the enlarged structure at B in the middle; Figure 4 is a schematic diagram of the explosion structure between the bearing seat and the anchor bar in an embodiment of the present application; Figure 5 yes Figure 2 Schematic diagram of the enlarged structure at point C in the middle.

[0027] Explanation of the reference numerals in the accompanying drawings: 1. bearing seat; 101. anchoring section; 102. threaded section; 2. anchor bar; 3. pressure seat; 31. first pressure ring; 32. second pressure ring; 4. locking cap; 5. casing; 6. drill bit; 61. moving section; 611. guide portion; 612. abutment portion; 62. spike section; 7. linkage member; 8. ramp surface; 9. drill bit; 10. guide cavity; 11. guide head; 12. limit shaft; 13. slurry outlet; 14. stroke portion; 15. stroke groove; 16. moving groove; 17. through hole; 171. expansion hole; 172. sliding hole; 18. step edge; 19. fixing nail; 20. slot; 21. connecting section. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-5 This application is described in further detail.

[0029] The present application embodiment discloses a recyclable anchor rod. Figure 1 and Figure 2 The recyclable anchor rod includes a bearing seat 1, an anchor bar 2, a pressure seat 3, a locking cap 4, a casing 5, a drill bit 6 and a linkage part 7.

[0030] The anchor bar 2 is threadedly connected to the bearing seat 1, the pressing seat 3 is sleeved on the anchor bar 2, the locking cap 4 is threadedly sleeved on the end of the anchor bar 2 away from the bearing seat 1, and the locking cap 4 is also located on the side of the pressing seat 3 away from the bearing seat 1. The sleeve 5 is coaxially sleeved on the outer wall of the anchor bar 2 and is clamped between the bearing seat 1 and the pressing seat 3. The drill bit 6 moves in the bearing seat 1, and the linkage member 7 is located in the bearing seat 1 and connected to the end of the anchor bar 2. When the anchor bar 2 moves in the bearing seat 1, it can be linked with the drill bit 6 through the linkage member 7, so that the drill bit 6 moves to the outside of the bearing seat 1.

[0031] When the anchor rod is installed, the bearing seat 1 and the anchor bar 2 both enter the anchor hole, the bearing seat 1 abuts against the deepest end of the anchor hole, and the pressure seat 3 is located outside the anchor hole and abuts against the surface of the anchored structure. When the anchor bar 2 moves in a threaded direction close to the bearing seat 1, it drives the drill bit 6 to drill outward into the inner wall of the anchor hole, so that the bearing seat 1 is positioned in the anchor hole, and then slurry is poured into the anchor hole to fill the anchor hole, thereby improving the stability of the anchor rod during grouting. In this embodiment, the anchored structure is a slope soil. When the anchor bar 2 needs to be recovered, the bearing seat 1 is removed and the anchor bar 2 is moved outwardly by thread.

[0032] Reference Figure 3 and Figure 4 Specifically, for the bearing seat 1, the bearing seat 1 includes an anchoring section 101 and a threaded section 102 which are coaxially fixedly connected in sequence. The anchoring section 101 is in the shape of a disk, and the threaded section 102 is in the shape of a hollow cylinder. The outer diameter of the anchoring section 101 is smaller than and close to the inner diameter of the anchor hole. At the same time, the outer diameter of the anchoring section 101 is larger than the outer diameter of the threaded section 102, and the outer diameter of the threaded section 102 is consistent with the outer diameter of the sleeve. The inner wall of the threaded section 102 has an internal thread for threading the anchor bar 2. The anchoring section 101 is provided with a movable groove 16 for the threaded section 102 to coaxially enter, and the movable groove 16 does not penetrate the end of the anchoring section 101 away from the threaded section 102.

[0033] As for the linkage member 7, the linkage member 7 is fixed to one end of the anchor bar 2 close to the bearing seat 1, the linkage member 7 is conical, and the outer diameter of one end of the linkage member 7 connected to the anchor bar 2 is consistent with the outer diameter of the anchor bar 2. The outer diameter of the linkage member 7 gradually decreases in the direction away from the anchor bar 2, so that the outer periphery of the linkage member 7 forms a slope surface 8 which is gradually inclined toward the axial direction of the bearing seat 1 along the direction away from the anchor bar 2, and the end of the drill bit 6 close to the axis of the bearing seat 1 abuts against the slope surface 8.

[0034] Reference Figure 1 and Figure 3 As for the drill bit 6, the drill bit 6 moves radially in the anchoring section 101, and a plurality of drill bits 6 are evenly spaced along the circumference of the anchoring section 101. In this embodiment, there are four drill bits 6, and in other embodiments, there may be three or five drill bits 6.

[0035] Each drill bit 6 includes a moving section 61 and a spike section 62. The moving section 61 has a cylindrical shape at one end and a frustum shape at the other end, and the cylindrical portion of the moving section 61 is coaxial with the frustum portion, the maximum outer diameter of the frustum portion is consistent with that of the cylindrical portion, and the outer diameter of the frustum portion gradually decreases away from the cylindrical portion. The spike section 62 is conical, and the spike section 62 is coaxially fixed to one end of the moving section 61 that is cylindrical, and the outer diameter of the spike section 62 near the end of the moving section 61 is consistent with the outer diameter of the moving section 61, and the outer diameter of the spike section 62 gradually decreases in the direction away from the moving section 61, and the end of the moving section 61 away from the spike section 62 is in the shape of an arc convex toward the direction away from the spike section 62. The axial direction of the movable section 61, the axial direction of the spike section 62 and the movement direction of the drill bit 6 in the anchoring section 101 all coincide with each other. The anchoring section 101 is provided with a through hole 17 along its own radial direction for the drill bit 6 to slide. The through hole 17 corresponds to the drill bit 6 one by one, and the through hole 17 connects the outside of the anchoring section 101 with the movable groove 16. The drill bit 6 enters the movable groove 16 through the through hole 17 and abuts against the slope surface 8.

[0036] Reference Figure 1 and Figure 3 The anchor bar 2 has a first state and a second state. The anchor bar 2 is in the first state before being placed in the anchor hole together with the bearing seat 1. After the bearing seat 1 reaches the installation position, the anchor bar 2 is threaded a distance toward the anchoring section 101 and is in the second state.

[0037] Specifically, when the anchor bar 2 is in the first state, the end of the linkage member 7 away from the anchor bar 2 is located in the moving groove 16, and the moving section 61 abuts against the end of the linkage member 7 away from the anchor bar 2. At this time, the moving section 61 and the spike section 62 are both stored in the bearing seat 1. In the process of the anchor bar 2 moving from the first state to the second state, the linkage member 7 simultaneously moves forward and rotates toward the direction close to the anchoring section 101. At this time, the linkage member 7 pushes the drill bit 6 to move outside the bearing seat 1 through the slope surface 8, so as to push the spike section 62 out of the anchoring section 101 and insert it into the inner wall of the anchor hole. Among them, the distance that the spike section 62 extends out of the anchoring section 101 is determined according to the actual situation on site.

[0038] Reference Figure 3 Furthermore, in order to improve the smoothness of the drill bit 6 being inserted into the inner wall of the anchor hole, the outer wall of the drill bit 6 is provided with a drill bit 9 which spirally extends from the outer peripheral wall of the spike section 62 to the outer peripheral wall of the moving section 61, and the free side of the drill bit 9 away from the outer wall of the drill bit 6 is a blade. The moving section 61 includes a guide portion 611 and an abutment portion 612 which are sequentially arranged along its own axial direction, the guide portion 611 is continuous with the spike section 62 and is located between the spike section 62 and the abutment portion 612, and the frustum portion of the moving section 61 is located at the end of the abutment portion 612 away from the guide portion 611. The drill bit 9 spirally extends on the guide portion 611, and the drill bit 9 stops extending at the boundary between the guide portion 611 and the abutment portion 612.

[0039] In order to make way for the drill bit 9, the anchoring section 101 is enlarged at the end of the through hole 17 away from the moving groove 16, so that the through hole 17 is divided into an enlarged diameter hole 171 and a sliding hole 172 distributed along the axial direction of the drill bit 6. The enlarged diameter hole 171 is coaxially connected with the sliding hole 172. The enlarged diameter hole 171 is closer to the moving groove 16 than the sliding hole 172, and the diameter of the enlarged diameter hole 171 is larger than the diameter of the sliding hole 172, so that a step edge 18 is formed on the end surface of the enlarged diameter hole 171 close to the moving groove 16. The diameter of the sliding hole 172 is consistent with the outer diameter of the abutment portion 612, and the abutment portion 612 slides coaxially in the sliding hole 172, and the end of the abutment portion 612 away from the spike section 62 abuts on the slope surface 8; the guide portion 611 moves coaxially with the spike section 62 in the enlarged diameter hole 171.

[0040] Reference Figure 3 Furthermore, a guide cavity 10 is formed between two adjacent layers of blades of the drill 9, and the guide cavity 10 spirally extends along the extension direction of the drill 9. A guide head 11 is fixed in the expanded hole 171 of the anchoring section 101, and the guide head 11 is cylindrical, and the axis of the guide head 11 is parallel to the axis of the anchoring section 101, and one end of the guide head 11 away from the wall of the expanded hole 171 extends into the guide cavity 10 located on the abutment portion 612, and the side wall of the guide head 11 abuts against the side wall of the drill 9.

[0041] When the drill bit 9 is completely retracted in the anchoring section 101, the guide head 11 extends into the guide cavity 10 at the end of the guide portion 611 away from the abutment portion 612. When the linkage member 7 pushes the drill bit 6 to move in the direction of extending out of the outer periphery of the anchoring section 101 through the ramp surface 8, the drill bit 6 rotates at the same time through the cooperation between the guide cavity 10 and the guide head 11 and the spiral of the guide cavity 10, so that the spike section 62 moves in a rotating forward manner when extending out of the anchoring section 101, thereby making it easier for the drill bit 6 to drill into the anchored structure.

[0042] Reference Figure 3 It should be noted that when the end of the drill 9 close to the moving groove 16 abuts against the step edge 18, the drill 9 is completely recovered in the through hole 17. Therefore, when installing the drill 9 on the anchoring section 101, the drill 9 can be placed in the through hole 17 first, and the guide head 11 abuts against the entrance of the guide cavity 10, and then the drill 9 is rotated to make the guide head 11 enter the guide cavity 10, and the drill 9 is gradually moved into the through hole 17 under the guidance of the guide cavity 10, until the end of the drill 9 abuts against the step edge 18, the installation of the drill 9 is completed, so that the drill 9 can be quickly installed. In order to improve the stability of the drill 9 in the anchoring section 101, the abutting portion 612 and the linkage 7 can be attracted to each other by magnets.

[0043] Reference Figure 1 and Figure 2Furthermore, in order to improve the stability of the bearing seat 1 when the anchor bar 2 is threadedly advanced on the threaded section 102, a fixing nail 19 is passed through the pressing seat 3, and a limiting shaft 12 passing through the pressing seat 3 is inserted into the bearing seat 1. The fixing nail 19 passes through the pressing seat 3 and is inserted into the slope surface, and the head of the fixing nail 19 abuts against the side of the pressing seat 3 away from the slope surface, so as to fix the pressing seat 3 on the slope.

[0044] There is at least one limiting shaft 12. In this embodiment, there are two limiting shafts 12, which are symmetrically distributed along the anchor bar 2. Specifically, each limiting shaft 12 is in the shape of a circular shaft, and a cavity is coaxially opened inside the limiting shaft 12, which penetrates the limiting shaft 12 and is far away from both ends. A slot 20 corresponding to the limiting shaft 12 is opened on one end surface of the anchoring section 101 close to the threaded section 102, and the slot 20 is used for inserting one end of the relative limiting shaft 12, so that the axis of the limiting shaft 12 is parallel to the axis of the anchor bar 2.

[0045] The limiting shaft 12 has a connecting section 21, which has an external thread, and a threaded hole for the connecting section 21 to be threadedly penetrated is provided on the pressing seat 3. When one end of the limiting shaft 12 is inserted into the slot 20, the connecting section 21 is located at the end of the limiting shaft 12 away from the anchoring section 101, and the connecting section 21 is threadedly penetrated on the pressing seat 3. Therefore, when the anchor bar 2 is threadedly advanced in the bearing seat 1 to push the drill bit 6 out, the bearing seat 1 is limited to rotate relative to the anchor hole by fixing the pressing seat 3 relative to the slope and limiting by the limiting shaft 12, thereby improving the stability of the bearing seat 1 when the anchor bar 2 is threadedly moved.

[0046] Reference Figure 1 and Figure 4 In addition, the outlet of the limiting shaft 12 at one end away from the connecting section 21 forms a slurry outlet 13. After the drill bit 6 drills into the inner wall of the anchor hole, the limiting shaft 12 is moved outwardly through the thread until the connecting section 21 leaves the pressure seat 3, so that the limiting shaft 12 leaves the slot 20. Subsequently, grouting is injected into the anchor hole through the limiting shaft 12, and the limiting shaft 12 is pulled out while grouting. After the limiting shaft 12 is completely pulled out, the threaded hole is sealed with a plug to complete the grouting of the anchor hole.

[0047] It should be noted that the outer wall of the limiting shaft 12 is coated with a release agent to prevent the limiting shaft 12 from coagulating with the slurry, and the two limiting shafts 12 are grouting at different times. First, one of the limiting shafts 12 is used to perform a grouting operation on the pores. After the slurry solidifies, the other limiting shaft 12 is gradually withdrawn and a second grouting operation is performed on the anchor hole to improve the grouting effect of the anchor hole. In addition, a release agent is also applied to the side of the pressing seat 3 facing the anchor hole to facilitate the recovery of the pressing seat 3.

[0048] Reference Figure 1 and Figure 5Furthermore, in order to improve the sealing performance between the casing 5 and the pressing seat 3 and the threaded section 102 during grouting, the pressing seat 3 includes a first pressing ring 31 and a second pressing ring 32. Specifically, the first pressing ring 31 is in the shape of a circular ring, the outer diameter of the first pressing ring 31 is larger than the aperture of the anchor hole, the inner diameter of the first pressing ring 31 is smaller than the aperture of the anchor hole and larger than the outer diameter of the casing 5, and the fixing nail 19 is penetrated on the second pressing ring 32. The second pressing ring 32 is also in the shape of a disc, and the second pressing ring 32 moves coaxially in the first pressing ring 31 along the axis of the first pressing ring 31, the outer diameter of the second pressing ring 32 is consistent with the inner diameter of the first pressing ring 31, the inner diameter of the second pressing ring 32 is consistent with the outer diameter of the anchor bar 2, and the second pressing ring 32 is coaxially sleeved on the anchor bar 2. A travel portion 14 is fixed on the outer peripheral wall of the second pressing ring 32 , and the travel portion 14 is in a square shape. A travel groove 15 for the travel portion 14 to slide is opened on the inner wall of the first pressing ring 31 , and the travel groove 15 does not pass through the end of the first pressing ring 31 close to the sleeve 5 .

[0049] After the bearing seat 1, anchor bar 2 and sleeve 5 are placed in the anchor hole, the limiting shaft 12 first moves in a threaded manner to push the bearing seat 1 to move toward the end of the anchor hole, and then the fixing nail 19 fixes the first pressure ring 31 on the slope surface, and then the anchor bar 2 is rotated to drive the anchor bar 2 to move in a threaded manner toward the bearing seat 1. After the drill bit 6 drills into the anchored structure, it pushes the second pressure ring 32 to move toward the bearing seat 1, so that the sleeve 5 is clamped between the second pressure ring 32 and the threaded section 102, and then the locking cap 4 is pressed against the second pressure ring 32 to limit the second pressure ring 32 from moving outward, and then grouting is performed.

[0050] The implementation principle of a recyclable anchor rod in the embodiment of the present application is as follows: before grouting, the anchor bar 2 is moved by thread to drive the linkage member 7 to move into the movable groove 16, so that the linkage member 7 pushes the drill bit 6 to drill into the inner wall of the anchor hole, and then the grouting operation is performed.

[0051] The present application also provides a construction process for a recyclable anchor rod, comprising the following steps: S1, using a drilling device to drill holes in the anchored structure to form anchor holes; S2, placing the anchor rod into the anchor hole, making the bearing seat 1 abut against the inner end wall of the anchor hole, and then fixing the first compression ring 31 to the outer surface of the anchored structure through the fixing nails 19; S3, threading the limit shaft 12 deep into the anchor hole, further pushing the bearing seat 1 to press against the inner end wall of the anchor hole; S4, threading the anchor bar 2 to the depth of the anchor hole, the anchor bar 2 pushes the drill bit 6 out of the bearing seat 1 through the linkage 7 and drills into the inner wall of the anchor hole, and then threadingly moves the locking cap 4 so that the locking cap 4 is pressed against the side of the pressing seat 3 away from the bearing seat 1; S5, firstly inject grouting into the anchor hole through one limiting shaft 12, and after the grouting solidifies, inject grouting into the anchor hole again through another limiting shaft 12.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A recyclable anchor, characterized in that: include: A bearing seat (1) capable of being placed in the anchor hole; Anchor bars (2) are threadedly connected to the bearing seat (1); A pressing seat (3) is sleeved on the anchor bar (2) and is used to press against the outer surface of the anchored structure; A locking cap (4) is threadedly connected to an end of the anchor bar (2) away from the bearing seat (1) and is used to abut against a side of the pressing seat (3) away from the anchored structure; A sleeve (5) is sleeved on the outer wall of the anchor bar (2) and is clamped between the bearing seat (1) and the pressure seat (3); a drill bit (6) which moves radially along the bearing seat (1) in the bearing seat (1), and a plurality of drill bits (6) are arranged at intervals along the circumference of the bearing seat (1); and A linkage member (7) is arranged on the anchor bar (2) and located in the bearing seat (1) so as to drive the drill bit (6) to move out of the bearing seat (1) and drill into the inner wall of the anchor hole when the anchor bar (2) is threadedly moved in the bearing seat (1).

2. A recyclable anchor rod according to claim 1, characterized in that: The linkage member (7) is arranged at the end of the anchor bar (2), and the linkage member (7) is formed with a slope surface (8) for all the drill bits (6) to abut against one end of the anchor bar (2). When the anchor bar (2) moves in the bearing seat (1), the linkage member (7) pushes the drill bits (6) to move radially along the bearing seat (1) through the slope surface (8).

3. A recyclable anchor rod according to claim 2, characterized in that: The drill bit (6) comprises a moving section (61) and a spike section (62) in sequence along a direction away from the slope surface (8); the spike section (62) faces the outside of the receiving seat; and the free end of the moving section (61) abuts against the slope surface (8).

4. A recyclable anchor rod according to claim 3, characterized in that: The drill bit (6) has a drill bit (9) spirally extending from the outer wall of the spike section (62) to the outer wall of the moving section (61); a guide cavity (10) is formed between two adjacent layers of blades of the drill bit (9); a guide head (11) extending into the guide cavity (10) is fixed in the support seat (1), so that the drill bit (6) rotates synchronously when moving toward the outside of the support seat (1).

5. The recyclable anchor rod according to claim 1, characterized in that: A limiting shaft (12) is inserted into the bearing seat (1), the limiting shaft (12) is parallel to the anchor bar (2), and the limiting shaft (12) is also threadedly inserted into the pressure seat (3).

6. A retrievable anchor rod according to claim 5, characterized in that: Two limit axes (12) are symmetrically arranged along the anchor bar (2).

7. The recyclable anchor rod according to claim 5, characterized in that: The limiting shaft (12) is hollow inside, and an end of the limiting shaft (12) close to the bearing seat (1) forms a grout outlet (13), and during grouting, grout is injected into the anchor hole through the limiting shaft (12).

8. The recyclable anchor rod according to claim 1, characterized in that: The pressure seat (3) comprises a first pressure ring (31) and a second pressure ring (32), the first pressure ring (31) being coaxially sleeved with the second pressure ring (32), the first pressure ring (31) being simultaneously able to axially move relative to the second pressure ring (32), the outer diameter of the second pressure ring (32) being smaller than the inner diameter of the anchor hole, the outer diameter of the first pressure ring (31) being larger than the inner diameter of the anchor hole, and the anchor bar (2) being passed through the second pressure ring (32).

9. A retrievable anchor rod according to claim 8, characterized in that: The second pressure ring (32) has a stroke portion (14) on its outer wall, and the first pressure ring (31) has a stroke groove (15) on its inner wall for the stroke portion (14) to move axially parallel to the second pressure ring (32).

10. A construction process for recoverable anchor rods, applicable to any one of claims 1 to 9 above, characterized in that: The following steps are involved: S1, using a drilling device to drill holes in the anchored structure to form anchor holes; S2, placing the anchor rod into the anchor hole so that the bearing seat (1) abuts against the inner end wall of the anchor hole; S3, the anchor bar (2) is threadedly moved deep into the anchor hole, the anchor bar (2) pushes the drill bit (6) out of the bearing seat (1) through the linkage member (7) and drills into the inner wall of the anchor hole, and then the locking cap (4) is threadedly moved to press the pressing seat (3) against the outer surface of the anchored structure; S4, grouting into the anchor hole.

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