Anchoring devices that enhance the anchoring force of anchor cables

Abstract

This invention relates to the field of anchor cable anchoring technology, specifically to an anchoring device for enhancing the anchoring force of anchor cables. The device comprises an anchor cable body embedded inside a pre-drilled hole in a slope. Its key feature is that it includes a first anchoring reinforcement component disposed at the bottom of the anchor cable body. The first anchoring reinforcement component includes a vertical rod, a push plate, a connecting rod, a limiting component, an insert rod, and a base connected to the anchor cable body. The push plate is sleeved on the vertical rod, and the base is fixed to the end of the vertical rod away from the push plate. The push plate is pivotally connected to the connecting rod, which is pivotally connected to both the limiting component and the push plate. One end of the insert rod extends into the base, and the other end is connected to the limiting component, so that as the push plate slides down the outer wall of the vertical rod, the push plate can move the limiting component away from the base via the connecting rod. This anchoring device for enhancing the anchoring force of anchor cables can prevent the limiting component from rotating during anchoring, thus improving the stability of the anchoring process.

Description

Technical Field

[0001] This invention relates to the field of anchor cable anchoring technology, and more specifically, to an anchoring device for enhancing the anchoring force of anchor cables. Background Technology

[0002] In underground roadway support, anchor cables are usually used. During construction, ordinary prestressed anchor cables are anchored into the rock mass through drill holes by anchor heads, connecting the fractured rock mass with the stable surrounding rock, which improves the shear strength of the rock mass and inhibits the displacement of the rock mass, playing a vital role in strengthening the stability of the surrounding rock.

[0003] Related technologies propose an anchoring device to enhance the anchoring force of anchor cables. This device involves slowly drilling the exposed portion of the second connector into the expansion section, causing the iron plate to fully expand and its countersunk teeth to embed into the weak rock mass, thus enhancing anchoring efficiency. However, in this method, the increased anchoring capacity is achieved by slowly drilling the exposed portion of the second connector into the expansion section, causing the iron plate to fully expand and its countersunk teeth to embed into the weak rock mass. During this operation, the rotation of the second connector can easily cause the expansion section to rotate, resulting in insufficient stability. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, embodiments of the present invention propose an anchoring device that enhances the anchoring force of anchor cables, which can prevent the limiting component from rotating during anchoring and improve the stability during anchoring.

[0006] An anchoring device for enhancing the anchoring force of an anchor cable according to an embodiment of the present invention includes an anchor cable body, wherein the anchor cable body is embedded inside a pre-drilled hole drilled inside a slope, characterized in that it comprises: a first anchoring reinforcement member disposed at the bottom of the anchor cable body.

[0007] The first anchoring reinforcement includes a vertical rod, a push plate, a connecting rod, a limiting component, a plug rod, and a base connected to the anchor cable body. The push plate is sleeved on the vertical rod, and the base is fixed to the end of the vertical rod away from the push plate. The push plate is pivotally connected to the connecting rod, and the connecting rod is pivotally connected to the limiting component and the push plate.

[0008] One end of the insertion rod extends into the base, and the other end of the insertion rod is connected to the limiting component. As the push plate slides down the outer wall of the upright, the push plate can move the limiting component away from the base via the connecting rod. This embodiment of the anchoring device for enhancing the anchoring force of the anchor cable can prevent the limiting component from rotating during anchoring, thus improving the stability during anchoring.

[0009] In some embodiments, the limiting component includes a movable block, and the insert rod extends into one end face of the movable block near the base;

[0010] A limiting claw is fixed to one end of the movable block away from the base, and the connecting rod is hinged between the push plate and the movable block.

[0011] In some embodiments, there are multiple limiting components and multiple connecting rods and insert rods. The multiple limiting components are arranged at intervals in the circumferential direction of the base, and the multiple connecting rods and insert rods correspond one-to-one with the limiting components. The base is provided with multiple rod slots that correspond one-to-one with the insert rods, and one end of the insert rod extends into the rod slot.

[0012] In some embodiments, the first anchoring reinforcement further includes a support spring disposed on the outer wall of the upright, wherein the top and bottom ends of the support spring are respectively fixedly connected to the bottom end of the push plate and the top end of the base.

[0013] In some embodiments, the first anchoring reinforcement further includes at least one self-locking component, the self-locking component including a locking block and a positioning rod.

[0014] The push plate has a sliding cavity, and a sliding groove is formed inside the push plate located on one side of the sliding cavity. The sliding groove is connected to the sliding cavity. A locking block is slidably fitted inside the sliding cavity. A positioning rod is fixed to one end of the locking block, and a rounded corner is formed at the other end of the locking block. The locking block slides against the outer wall of the upright.

[0015] In some embodiments, the self-locking assembly further includes a return spring, the positioning rod extends into the slide groove and is slidably connected thereto, and a return spring is sleeved on the outside of the positioning rod, with both ends of the return spring fixedly connected to the locking block and the end of the slide cavity, respectively.

[0016] In some embodiments, at least one set of lock holes is provided on the outer wall of the upright, the number of sets of lock holes being consistent with the number of lock blocks and corresponding one-to-one, and each set of lock holes being vertically and equidistantly opened on the outer wall of the upright.

[0017] In some embodiments, the anchoring device for enhancing the anchoring force of the anchor cable further includes a second anchoring reinforcement member connected to the end of the first anchoring reinforcement member away from the anchor cable body. The second anchoring reinforcement member includes a movable column fixed to the bottom end of the base. A conical seat is fixed to the bottom end of the movable column. A plurality of built-in grooves are arranged in a circular array on the outer wall of the conical seat. A limiting insert is slidably sleeved on the inner side of each built-in groove. A connecting spring is connected between the limiting insert and the built-in groove.

[0018] In some embodiments, a conical frame is provided on the outside of the conical seat, and a plurality of openings are provided through the outer wall of the conical frame. The number of openings is the same as the number of limiting inserts and they correspond one-to-one.

[0019] In some embodiments, a plurality of limiting blocks are fixed to the inner wall of the upper port of the tapered frame, and a plurality of limiting grooves are provided on the side wall of the movable column, wherein the limiting blocks and the limiting grooves are slidably fitted together. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall assembly of the anchoring device for enhancing the anchoring force of anchor cables according to an embodiment of the present invention.

[0021] Figure 2 This is a three-dimensional structural schematic diagram of an anchoring device for enhancing the anchoring force of anchor cables according to an embodiment of the present invention.

[0022] Figure 3 yes Figure 2 Enlarged structural diagram at point A in the middle.

[0023] Figure 4 This is a partial cross-sectional view of the push plate structure according to an embodiment of the present invention.

[0024] Figure 5 yes Figure 4 Enlarged structural diagram at point B

[0025] Figure 6 This is a schematic cross-sectional view of the tapered frame structure according to an embodiment of the present invention.

[0026] Figure 7 This is a schematic cross-sectional view of the cone-shaped support structure according to an embodiment of the present invention.

[0027] Figure label:

[0028] Anchor cable body 1,

[0029] Reserved drilling hole 2,

[0030] First anchoring reinforcement 3, upright 31, push plate 32, connecting rod 33, base 34, rod groove 341, limiting component 35, moving block 351, limiting claw 352, insert rod 353, self-locking component 36, sliding cavity 361, sliding groove 362, positioning rod 363, return spring 364, lock hole 365, locking block 366, support spring 37.

[0031] Second anchoring reinforcement 4, movable column 41, limiting groove 42, limiting block 43, conical frame 44, through port 45, limiting insert plate 46, conical seat 47, built-in groove 48, connecting spring 49, slope 5. Detailed Implementation

[0032] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0033] An anchoring device for enhancing the anchoring force of an anchor cable according to an embodiment of the present invention includes an anchor cable body 1, which is embedded inside a pre-drilled hole 2 opened inside a slope 5. The device is characterized by including a first anchoring reinforcement member 3 disposed at the bottom of the anchor cable body 1.

[0034] The first anchoring reinforcement 3 includes a vertical rod 31, a push plate 32, a connecting rod 33, a limiting component 35, an insert rod 353, and a base 34 connected to the anchor cable body 1. The push plate 32 is sleeved on the vertical rod 31, and the base 34 is fixed at the end of the vertical rod 31 away from the push plate 32. The push plate 32 is pivotally connected to the connecting rod 33, and the connecting rod 33 is pivotally connected to the limiting component 35 and the push plate 32.

[0035] One end of the insertion rod 353 extends into the base 34, and the other end of the insertion rod 353 is connected to the limiting component 35, so that as the push plate 32 slides down along the outer wall of the upright 31, the push plate 32 can move the limiting component 35 away from the base 34 via the connecting rod 33. The anchoring device for enhancing the anchoring force of the anchor cable in this embodiment of the invention can prevent the limiting component 35 from rotating relative to the anchoring device during anchoring, that is, prevent the limiting component 35 from rotating relative to the upright 31 or the base 34 during anchoring, thereby improving the stability during anchoring.

[0036] Specifically, the upper end of the connecting rod 33 is pivotally connected to the push plate 32, and the lower end of the connecting rod 33 is pivotally connected to the limiting component 35. The push plate 32 is arranged parallel to the base 34.

[0037] The upper end of the upright 31 is connected to the anchor cable body 1. The push plate 32 is set at the upper end of the upright 32, and the lower part of the upright 31 is provided with a fixedly connected base 34. The insert rod 353 extends into the base 34 and is movable relative to the base 34. Alternatively, the insert rod 353 extends into the base 34 and is connected to the base 34, and the insert rod 353 is movable relative to the base 34, so that when the push plate 32 moves down, the connecting rod 33 pushes the limiting component to move away from the base 34.

[0038] When prestress is applied to the anchor cable body, as the pusher 32 moves downward, the connecting rod 33 pushes the limiting component to move away from the base 34. This further moves the limiting component 35 away from the upright 31 and the base 34, forming a shape similar to an expansion bolt. Therefore, the limiting component 35 will not rotate relative to the upright and the anchor cable body 1, avoiding unnecessary damage to the rock mass or surrounding rock. It also prevents the limiting component 35 from easily forming a cavity between the anchoring device and the borehole or grout after rotation.

[0039] The anchoring device for enhancing the anchoring force of the anchor cable in the embodiment of the present invention, by setting a pusher plate 32, when the anchor cable prestress is applied, the pusher plate 32 moves downward relative to the upright 31 under the action of the rock mass or surrounding rock, the connecting rod 33 pushes the limiting component 35 to move away from the base 34, and the insertion rod 353 can prevent the limiting component 35 from rotating during anchoring, thereby improving the stability during anchoring.

[0040] In some embodiments, the limiting component 35 includes a movable block 351, and a rod 353 extends into the side end face of the movable block 351 near the base 34.

[0041] The limiting claw 352 is fixed to one end of the moving block 351 away from the base 34, and the connecting rod 33 is hinged between the push plate 32 and the moving block 351.

[0042] Specifically, when the limiting component 35 moves away from the base 34, the limiting claw 352 extends into the rock mass or surrounding rock. During the downward movement of the push plate 32, the push plate 32 can push the connecting rod 33, which in turn pushes the moving block 351, causing the moving block 351 to gradually move away from the base 34. The insertion rod 353 slides outward inside the rod groove 341, thereby continuously pushing the push plate 32 downward. After the grouting equipment injects cement grout into the reserved borehole 2, the gripping force formed between the limiting claw 352 and the cement grout inside the reserved borehole 2 can further enhance the anchoring force of the anchor cable.

[0043] Furthermore, there are multiple limiting components 35, multiple connecting rods 33, and multiple insert rods 353. The multiple limiting components 35 are spaced apart on the circumference of the base 34, and each connecting rod 33 and insert rod 353 corresponds to one limiting component 35. The base 34 is provided with multiple rod grooves 341 corresponding to each insert rod 353, and one end of each insert rod 353 extends into a rod groove 341. The limiting components 35 are spaced apart or arranged in an array on the circumference of the base 34. This increases the contact area between the limiting components and the surrounding rock or rock mass, thereby improving the stability of the anchorage.

[0044] Furthermore, the first anchoring reinforcement 3 also includes a support spring 37 disposed on the outer wall of the upright 31, with the top and bottom ends of the support spring 37 fixedly connected to the bottom end of the push plate 32 and the top end of the base 34, respectively. This prevents the limiting component 35 from moving away from the base 34 when no preload is applied, thus improving stability during use.

[0045] In some embodiments, the first anchoring reinforcement 3 further includes at least one self-locking component 36, which includes a locking block 366 and a positioning rod 363.

[0046] The push plate 32 has a sliding cavity 361. The push plate 32 located on one side of the sliding cavity 361 has a sliding groove 362 inside. The sliding groove 362 is connected to the sliding cavity 361. A locking block 366 is slidably sleeved inside the sliding cavity 361. A positioning rod 363 is fixedly connected to one end of the locking block 366. The other end of the locking block 366 has a rounded corner. The locking block 366 slides against the outer wall of the upright 31.

[0047] Specifically, the locking assembly 36 is used to fix the relative positions of the push plate 32 and the upright 31 after pre-tightening. The self-locking assembly 36 includes a sliding cavity 361 inside the push plate 32. A sliding groove 362 is formed inside the push plate 32 on one side of the sliding cavity 361, communicating with the sliding cavity 361. A locking block 366 is slidably fitted inside the sliding cavity 361. A positioning rod 363 is fixedly connected to one end of the locking block 366, and a rounded corner is formed at the other end of the locking block 366. The locking block 366 slidably abuts against the outer wall of the upright 31. The positioning rod 363 extends into and slidably connects to the sliding groove 362. A return spring 364 is fitted outside the positioning rod 363, with both ends of the return spring 364 fixedly connected to the ends of the locking block 366 and the sliding cavity 361, respectively. At least one set of locking holes 365 is provided on the outer wall of the upright 31. The number of sets of locking holes 365 is the same as the number of locking blocks 366 and corresponds one-to-one. Each set of locking holes 365 is vertically and equidistantly provided on the outer wall of the upright 31. By providing locking holes 365, it is convenient to limit the push plate 32 when different preloads are applied or when the push plate 32 moves to different positions on the upright 31, so as to prevent the push plate 32 from moving upward relative to the upright 31.

[0048] Specifically, when the push plate 32 is pushed down, the pushing force overcomes the elastic force of the support spring 37, causing the push plate 32 to slide down along the outer wall of the upright 31, compressing the support spring 37. During this process, the locking block 366 slides along the outer wall of the upright 31. When the locking block 366 slides to the lock hole 365, it is pushed out by the return spring 364, allowing the locking block 366 to extend into the lock hole 365. As the push plate 32 moves down, it pushes the connecting rod 33, which in turn pushes the moving block 351, causing the moving block 351 to gradually move away from the base 34. The insertion rod 353 then slides outward from inside the rod groove 341. The pusher plate 32 is continuously pushed downwards, causing the locking block 366 to be inserted into the locking hole 365 located on the lower side, until the limiting claw 352 fixed on the outer wall of the moving block 351 abuts against the side wall of the reserved drill hole 2, forming stable friction, thereby effectively enhancing the anchoring force of the anchor cable. After the grouting equipment injects cement grout into the inside of the reserved drill hole 2, the gripping force formed between the limiting claw 352 and the cement grout inside the reserved drill hole 2 can further enhance the anchoring force of the anchor cable.

[0049] The anchoring device for enhancing the anchoring force of the anchor cable according to an embodiment of the present invention, after the limiting insert plate 46 extends into the inner cavity of the reserved drill hole 2, continues to push the push plate 32 downward, causing the push plate 32 to slide down along the outer wall of the upright 31. During the downward movement of the push plate 32, it can push the connecting rod 33, which in turn pushes the moving block 351, causing the moving block 351 to gradually move away from the base 34, and the insert rod 353 slides outward inside the rod groove 341. The push plate 32 is continuously pushed downward until the limiting claw 352 fixed on the outer wall of the moving block 351 abuts against the side wall of the reserved drill hole 2, forming stable friction. After the cement grouting work is completed, the friction formed between the limiting claw 352 and the side wall of the reserved drill hole 2, as well as the gripping force formed between the limiting claw 352 and the cement grout inside the reserved drill hole 2, can further enhance the anchoring force of the anchor cable.

[0050] In some embodiments, the anchoring device for enhancing the anchoring force of the anchor cable further includes a second anchoring reinforcement 4 connected to the end of the first anchoring reinforcement 3 away from the anchor cable body 1. The second anchoring reinforcement 4 includes a movable column 41 fixed to the bottom end of the base 34. A cone seat 47 is fixed to the bottom end of the movable column 41. A plurality of built-in grooves 48 are arranged in a ring array on the outer wall of the cone seat 47. A limiting insert plate 46 is slidably sleeved on the inner side of each built-in groove 48. A connecting spring 49 is connected between the limiting insert plate 46 and the built-in groove 48.

[0051] Specifically, the second anchoring reinforcement 4 includes a movable column 41 fixed to the bottom end of the base 34. A conical seat 47 is fixed to the bottom end of the movable column 41. Several internal grooves 48 are arranged in a circular array on the outer wall of the conical seat 47. A limiting plate 46 is slidably fitted inside each internal groove 48. A connecting spring 49 connects the limiting plate 46 to the internal groove 48. Therefore, after extending into the borehole 2, the limiting plate 46 increases the stability of the connection between the borehole and the anchoring device. Simultaneously, due to the spring 49, during anchor cable installation, the connecting spring 49 always applies force to the limiting plate 46 to keep the plate away from the conical seat 47 and extend into the borehole, thus improving the stability of the connection between the anchoring device and the surrounding rock or rock mass, i.e., increasing the stability of the connection between the borehole and the anchoring device.

[0052] The anchoring device for enhancing the anchoring force of the anchor cable according to an embodiment of the present invention, by providing a second anchoring reinforcement 4, a connecting spring 49 of the second anchoring reinforcement 4, and a limiting insert 46, ensures that during anchor cable installation, the connecting spring 49 always applies force to the limiting insert 46 to keep the insert away from the cone seat 47 so that it can extend into the borehole, thereby increasing the stability of the connection between the borehole and the anchoring device.

[0053] Furthermore, a conical frame 44 is provided on the outer side of the conical base 47. Several through openings 45 are provided through the outer wall of the conical frame 44. The number of through openings 45 is the same as the number of limiting plates 46 and they correspond one-to-one. Several limiting blocks 43 are fixedly connected to the inner wall of the upper port of the conical frame 44. Several limiting grooves 42 are provided on the side wall of the moving column 41. The limiting blocks 43 and the limiting grooves 42 are slidably fitted together.

[0054] When the push plate 32 is pushed down, the bottom end of the second reinforcing member 4 abuts against the end of the pre-drilled hole 2. As the push plate 32 is pushed down continuously, the moving column 41 slides into the inner side of the conical frame 44, and the limiting plate 46 slides along the inner wall of the conical frame 44. With the cooperation of the limiting groove 42 and the limiting block 43, the moving column 41 can slide smoothly and accurately until the limiting plate 46 slides to the opening 45. At this time, the limiting plate 46 loses the abutment and limitation of the inner wall of the conical frame 44, and the connecting rod, which was originally in a compressed state, is released from its restraint. Spring 49 pushes the limiting plate 46 outward, causing the limiting plate 46 to slide through the inside of the opening 45 and extend into the cavity of the pre-drilled hole 2. At this time, the bottom end of the cone seat 47 is in contact with the bottom of the cone frame 44. After the cement grouting work is completed inside the pre-drilled hole 2, a stable gripping force is formed between the limiting plate 46 and the cement grout. When the anchor cable body 1 is pulled, the connection force between the limiting plate 46 and the cement grout can greatly enhance the anchoring force of the anchor cable.

[0055] The anchoring device for enhancing the anchoring force of the anchor cable according to an embodiment of the present invention has the anchor cable body 1 embedded inside a pre-drilled hole 2 inside the slope 5. An anchoring device is provided at one end of the anchor cable body 1 located inside the pre-drilled hole 2. The anchoring device includes a first reinforcing member and a second reinforcing member. Before pouring cement into the pre-drilled hole 2, the pusher plate 32 is pushed down so that the bottom end of the second reinforcing member abuts against the end of the pre-drilled hole 2. When the pusher plate 32 is continuously pushed down, the moving column 41 will cone-shaped. The conical frame 44 slides inward, and the limiting plate 46 slides along the inner wall of the conical frame 44 until the limiting plate 46 slides to the opening 45. The connecting spring 49, which was originally in a compressed state, pushes the limiting plate 46 outward, so that the limiting plate 46 slides through the opening 45 and extends into the cavity of the reserved drill hole 2. After the cement grouting work is completed inside the reserved drill hole 2, a stable gripping force is formed between the limiting plate 46 and the cement grout, which can effectively enhance the anchoring force of the anchor cable.

[0056] The following is a general description of the anchoring device for enhancing the anchoring force of anchor cables according to an embodiment of the present invention.

[0057] Please see Figures 1 to 5As shown, the anchoring device for enhancing the anchoring force of the anchor cable in this embodiment of the invention includes an anchor cable body 1, which is embedded inside a reserved drill hole 2 opened inside the slope 5. An anchoring device is provided at one end of the anchor cable body 1 located inside the reserved drill hole 2. The anchoring device includes a first reinforcing member 3 and a second reinforcing member 4.

[0058] Specifically, the first reinforcing member 3 includes a base 34, with a vertical rod 31 fixedly connected to the top of the base 34. A push plate 32 is arranged above the base 34, parallel to the base 34. The vertical rod 31 slides through the interior of the push plate 32. Several limiting components 35 are arranged on the base 34 in a circular array on the outer side of the base 34. Each limiting component 35 is connected to the push plate 32 by a connecting rod 33. As the push plate 32 slides down the outer wall of the vertical rod 31, the limiting component 35 can be moved away from the base 34 via the connecting rod 33. The limiting component 35 includes a moving block 351. A rod 353 is fixedly connected to the end of the moving block 351 near the base 34, and a limiting claw 352 is fixedly connected to the end of the moving block 351 away from the base 34. The connecting rod 33 is hinged between the push plate 32 and the moving block 351.

[0059] Furthermore, a number of rod slots 341 are provided inside the base 34, and the number of rod slots 341 is the same as the number of insertion rods 353 and they correspond one-to-one. The insertion rods 353 extend into the rod slots 341 and are slidably connected to them. A support spring 37 is sleeved on the outer wall of the upright rod 31, and the top and bottom ends of the support spring 37 are fixedly connected to the bottom end of the push plate 32 and the top end of the base 34, respectively.

[0060] Furthermore, the first reinforcing member 3 also includes at least one self-locking assembly 36 for fixing the relative positions of the push plate 32 and the upright 31. The self-locking assembly 36 includes a sliding cavity 361 formed inside the push plate 32. A sliding groove 362 is formed inside the push plate 32 on one side of the sliding cavity 361, communicating with the sliding cavity 361. A locking block 366 is slidably fitted inside the sliding cavity 361. A positioning rod 363 is fixedly connected to one end of the locking block 366, and a rounded corner is formed at the other end of the locking block 366. The locking block 366 slidably abuts against the outer wall of the upright 31. The positioning rod 363 extends into and slidably connects to the sliding groove 362. A return spring 364 is fitted outside the positioning rod 363, with both ends of the return spring 364 fixedly connected to the locking block 366 and the end of the sliding cavity 361, respectively. At least one set of lock holes 365 is provided on the outer wall of the upright 31. The number of sets of lock holes 365 is consistent with the number of lock blocks 366 and corresponds one-to-one. Each set of lock holes 365 is vertically and equidistantly opened on the outer wall of the upright 31.

[0061] In this embodiment, when the push plate 32 is pushed down, the pushing force overcomes the elastic force of the support spring 37, causing the push plate 32 to slide down along the outer wall of the upright 31 and compress the support spring 37. During this process, the locking block 366 slides along the outer wall of the upright 31. When the locking block 366 slides to the lock hole 365, it is pushed out by the return spring 364, allowing the locking block 366 to extend into the lock hole 365. As the push plate 32 moves down, it pushes the connecting rod 33, which in turn pushes the moving block 351, causing the moving block 351 to gradually move away from the base 34. The insertion rod 353 slides outward from inside the rod groove 341. The pusher plate 32 is continuously pushed downwards, causing the locking block 366 to be inserted into the locking hole 365 located on the lower side, until the limiting claw 352 fixed on the outer wall of the moving block 351 abuts against the side wall of the reserved drill hole 2, forming stable friction, thereby effectively enhancing the anchoring force of the anchor cable. After the grouting equipment injects cement grout into the inside of the reserved drill hole 2, the gripping force formed between the limiting claw 352 and the cement grout inside the reserved drill hole 2 can further enhance the anchoring force of the anchor cable.

[0062] The second reinforcing member 4 includes a movable column 41 fixed to the bottom end of the base 34. A cone seat 47 is fixed to the bottom end of the movable column 41. Several built-in slots 48 are arranged in a ring array on the outer wall of the cone seat 47. A limiting plate 46 is slidably sleeved on the inner side of each built-in slot 48. A connecting spring 49 is connected between the limiting plate 46 and the built-in slot 48.

[0063] Furthermore, a conical frame 44 is provided on the outer side of the conical base 47. Several through-holes 45 are provided through the outer wall of the conical frame 44. The number of through-holes 45 is the same as the number of limiting inserts 46 and they correspond one-to-one. Several limiting blocks 43 are fixedly connected to the inner wall of the upper port of the conical frame 44. Several limiting grooves 42 are provided on the side wall of the moving column 41. The limiting blocks 43 and the limiting grooves 42 are slidably fitted together.

[0064] In this embodiment, when the push plate 32 is pushed down, the bottom end of the second reinforcing member 4 abuts against the end of the pre-drilled hole 2. When the push plate 32 is continuously pushed down, the moving column 41 slides into the inner side of the conical frame 44, and the limiting plate 46 slides along the inner wall of the conical frame 44. With the cooperation of the limiting groove 42 and the limiting block 43, the moving column 41 can slide smoothly and accurately until the limiting plate 46 slides to the opening 45. At this time, the limiting plate 46 loses the abutment and limitation of the inner wall of the conical frame 44 and is originally in a compressed state. The connecting spring 49 pushes the limiting plate 46 outward, so that the limiting plate 46 slides through the opening 45 and extends into the cavity of the reserved drill hole 2. At this time, the bottom end of the cone seat 47 just abuts against the bottom of the cone frame 44. After the cement grouting work is completed inside the reserved drill hole 2, a stable gripping force is formed between the limiting plate 46 and the cement grout. When the anchor cable body 1 is pulled, the connection force between the limiting plate 46 and the cement grout can greatly enhance the anchoring force of the anchor cable.

[0065] Working principle and usage process: When working, firstly, a pre-drilled hole 2 is opened at an appropriate position on the slope 5 using drilling equipment. Then, the anchor cable body 1, together with the first reinforcing member 3 and the second reinforcing member 4 at the end of the anchor cable body 1, is sent to the end of the pre-drilled hole 2. It should be noted that in the initial stage (that is, when the anchor cable body 1 is sent into the pre-drilled hole 2), the limiting plate 46 is completely located inside the conical frame 44, the insert rod 353 is inside the rod groove 341, and the maximum distance between the two limiting claws 352 on the opposite side is less than the diameter of the push plate 32, ensuring that the first reinforcing member 3 and the second reinforcing member 4 will not obstruct the lowering of the anchor cable body 1 during the lowering process. Next, prepare a sleeve (not shown in the figure), put the sleeve on the outside of the anchor cable body 1 and insert it into the reserved drill hole 2 until the sleeve abuts against the upper wall of the push plate 32. Then, forcefully push the sleeve into the reserved drill hole 2 (the push plate 32 can also be pushed by an electric telescopic rod, electric hydraulic device, etc., to push the push plate 32 closer to the end of the reserved drill hole 2). When the push plate 32 is pushed down, the bottom end of the second reinforcing member 4 abuts against the end of the reserved drill hole 2. When the push plate 32 is pushed down continuously, the moving column 41 will slide into the inside of the conical frame 44, and the limiting plate 46 will slide along the inner wall of the conical frame 44. With the cooperation of block 43, the moving column 41 can slide smoothly and accurately until the limiting insert plate 46 slides to the opening 45. At this time, the limiting insert plate 46 loses the abutment and limitation of the inner wall of the conical frame 44. The connecting spring 49, which was originally in a compressed state, pushes the limiting insert plate 46 outward, so that the limiting insert plate 46 slides through the opening 45 and extends into the inner cavity of the reserved drill hole 2. At this time, the bottom end of the cone seat 47 just abuts against the bottom of the conical frame 44. After the cement grouting work is completed inside the reserved drill hole 2, a stable gripping force is formed between the limiting insert plate 46 and the cement grout, which can effectively enhance the anchoring force of the anchor cable.

[0066] As the push plate 32 continues to be pushed down, the pushing force overcomes the elasticity of the support spring 37, causing the push plate 32 to slide down along the outer wall of the upright 31, compressing the support spring 37. During this process, the locking block 366 slides along the outer wall of the upright 31. When the locking block 366 slides to the lock hole 365, it is pushed out by the return spring 364, allowing the locking block 366 to extend into the lock hole 365. As the push plate 32 moves down, it pushes the connecting rod 33, which in turn pushes the moving block 351, causing it to gradually move away from the base 34. The insertion rod 353 slides outward from the rod groove 341. Continuing to push the push plate 32 down causes the locking block 366 to be inserted into the lower lock hole 365 until the limiting claw 352 fixed on the outer wall of the moving block 351 abuts against the side wall of the pre-drilled hole 2, forming stable friction. Subsequently, cement grouting is performed on the inner side of the pre-drilled hole 2 using grouting equipment. The friction between the limiting claw 352 and the side wall of the pre-drilled hole 2, as well as the gripping force between the limiting claw 352 and the cement grout inside the pre-drilled hole 2, can further enhance the anchoring force of the anchor cable.

[0067] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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 invention.

[0068] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0069] In this invention, 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, an electrical connection, or a connection that allows communication between them; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0070] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0071] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0072] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An anchoring device for enhancing the anchoring force of an anchor cable, comprising an anchor cable body, wherein the anchor cable body is embedded inside a pre-drilled hole drilled within a slope, characterized in that, include: The first anchoring reinforcement is installed at the bottom of the anchor cable body. The first anchoring reinforcement includes a vertical rod, a push plate, a connecting rod, a limiting component, a plug rod, and a base connected to the anchor cable body. The push plate is sleeved on the vertical rod, and the base is fixed to the end of the vertical rod away from the push plate. The push plate is pivotally connected to the connecting rod, and the connecting rod is pivotally connected to the limiting component and the push plate. One end of the insertion rod extends into the base, and the other end of the insertion rod is connected to the limiting component. As the push plate slides down the outer wall of the upright, the push plate can move the limiting component away from the base through the connecting rod. The first anchoring reinforcement further includes at least one self-locking component, which includes a locking block and a positioning rod. The push plate has a sliding cavity, and a sliding groove is provided inside the push plate located on one side of the sliding cavity. The sliding groove is connected to the sliding cavity. A locking block is slidably sleeved inside the sliding cavity. A positioning rod is fixed to one end of the locking block, and a rounded corner is provided at the other end of the locking block. The locking block slides against the outer wall of the upright. The self-locking assembly also includes a return spring. The positioning rod extends into the slide groove and is slidably connected thereto. A return spring is sleeved on the outside of the positioning rod. The two ends of the return spring are fixedly connected to the locking block and the end of the slide cavity, respectively. At least one set of lock holes is provided on the outer wall of the upright. The number of sets of lock holes is consistent with the number of locking blocks and corresponds one-to-one. Each set of lock holes is vertically and equidistantly opened on the outer wall of the upright.

2. The anchoring device for enhancing the anchoring force of anchor cables according to claim 1, characterized in that, The limiting component includes a movable block, and the insertion rod extends into the side end face of the movable block near the base; A limiting claw is fixed to one end of the movable block away from the base, and the connecting rod is hinged between the push plate and the movable block.

3. The anchoring device for enhancing the anchoring force of anchor cables according to claim 1, characterized in that, The number of limiting components is multiple, the number of connecting rods and insert rods is multiple, the multiple limiting components are arranged at intervals in the circumferential direction of the base, and the multiple connecting rods and insert rods correspond one-to-one with the limiting components. The base is provided with multiple rod slots that correspond one-to-one with the insert rods, and one end of the insert rod extends into the rod slot.

4. The anchoring device for enhancing the anchoring force of anchor cables according to claim 3, characterized in that, The first anchoring reinforcement also includes a support spring disposed on the outer wall of the upright, wherein the top and bottom ends of the support spring are respectively fixed to the bottom end of the push plate and the top end of the base.

5. The anchoring device for enhancing the anchoring force of anchor cables according to any one of claims 1-4, characterized in that, It also includes a second anchoring reinforcement connected to the end of the first anchoring reinforcement away from the anchor cable body. The second anchoring reinforcement includes a movable column fixed to the bottom end of the base. A cone seat is fixed to the bottom end of the movable column. Several built-in slots are arranged in a circular array on the outer wall of the cone seat. A limiting insert is slidably sleeved on the inner side of each built-in slot. A connecting spring is connected between the limiting insert and the built-in slot.

6. The anchoring device for enhancing the anchoring force of anchor cables according to claim 5, characterized in that, A conical frame is provided on the outside of the conical seat, and a number of through openings are provided on the outer wall of the conical frame. The number of through openings is the same as the number of limiting inserts and they correspond one-to-one.

7. The anchoring device for enhancing the anchoring force of anchor cables according to claim 6, characterized in that, Several limiting blocks are fixed to the inner wall of the upper port of the tapered frame, and several limiting grooves are opened on the side wall of the movable column. The limiting blocks and the limiting grooves are slidably fitted and connected.

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