Anchor rod capable of recycling internal rotation type built-in anchoring rod and using method

Abstract

The invention discloses an anchor rod with a recoverable internal rotation type built-in anchoring rod and a using method, and belongs to the technical field of anchor rods, the anchor rod comprises a main rod, a supporting structure, a lifting structure, an anchoring structure and an anchor head structure, the main rod is of a hollow structure, a plurality of openings communicated with the outside are formed in the surface of the main rod, and the supporting structure is installed in the main rod; the rotating rod is accommodated in the main rod and is inserted into the supporting structure; the section, arranged in the main rod, of the rotating rod is a screw rod, the lifting structure is in threaded connection with the screw rod and is close to the supporting structure, a connecting rod set and a telescopic rod set are installed on the lifting structure, the anchoring structure is installed on the supporting structure, and the anchor head structure is installed at the bottom of the main rod through the telescopic rod set. And the rotating rod rotates to drive the lifting structure to lift and drive the anchor head structures to expand and contract relative to the main rod. The anchoring structure and the anchor head structure can be driven to reciprocate relative to the main rod without a high-precision transmission part, and finally the purpose that the anchor rod can be recycled is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of anchor rods, and in particular relates to an anchor rod with a recyclable internally rotating built-in anchor rod and a use method thereof. Background Art

[0002] Anchor rod is a rod system structure for rock and soil reinforcement. It is widely used in surface engineering such as slopes, deep rock and soil foundation pits, as well as in the construction of tunnels and mines. As a tensile member deep into the stratum, one end of the anchor rod is connected to the engineering structure, and the other end is deep into the stratum. The whole anchor rod is divided into a free section and an anchoring section. The free section refers to the area where the tension at the anchor rod head is transmitted to the anchor body, and its function is to apply prestress to the anchor rod; the anchoring section refers to the area where the cement slurry bonds the prestressed tendons to the soil layer, and its function is to increase the bonding friction between the anchor body and the soil layer, and increase the bearing capacity of the anchor body. At present, it is difficult to achieve the complete recovery of the anchor rod with the commonly used soil slope anchoring method. Usually, after the project is completed, the rod body or part of the rod cannot be recovered and is buried underground. This not only increases the construction difficulty of other surrounding buildings, but also causes a huge waste of materials. At the same time, it also causes "pollution" to the underground space, seriously affecting the economic benefits of the land.

[0003] In response to the above-mentioned problems, currently implemented projects mostly use recyclable anchor rods for construction. However, existing recyclable anchor rods are usually recycled mechanically and chemically, and their chemical recycling may cause certain pollution to the surrounding environment. Therefore, mechanical recycling is a more cost-effective recovery method. Although there are many recyclable anchor rods in the prior art that can realize mechanical recovery functions, such as arranging a combination of several bearings, gears, threaded rods and other transmission parts in the anchor rod to realize the shape switching during anchoring and recovery of the anchor rod, the anchor rod may be deformed due to stress after being subjected to stress for a long time, thereby causing its transmission performance to fail.

[0004] In addition, the recovery time of the anchor rod is related to the construction period. If the construction period is too long, the transmission parts such as gears, screws and bearings in the anchor rod will easily rust and cause locking once they lack lubricating oil maintenance in the humid underground environment, and the mechanical recovery function cannot be realized. Therefore, the recyclable anchor rods in the prior art still have the problems of inconvenient recovery, the recyclable anchor rods still require grouting maintenance and a long construction period, which seriously affects the low recovery efficiency of the anchor rods.

[0005] Therefore, developing an anchor rod that is easy to operate and fully recyclable is of great significance to further promote the development of recyclable anchoring technology. Summary of the invention

[0006] Purpose of the invention: The present invention provides a recyclable internally rotating built-in anchor rod and a method of use, which can solve the problems in the prior art. The rotational force is converted into a longitudinal force through a lifting structure, and is transmitted to the anchor structure and the anchor head structure respectively through a connecting rod group and a telescopic rod group. The anchor structure and the anchor head structure can be driven to perform rapid reciprocating motion relative to the main rod without the need for high-precision transmission parts, thereby ultimately achieving the purpose of efficient recovery of the anchor rod.

[0007] To achieve the above object, the present invention is implemented by adopting the following technical solutions: In a first aspect, the present invention provides a recyclable internally rotating built-in anchor rod, comprising a main rod, the main rod being a hollow structure, and a plurality of openings communicating with the outside are provided on the surface of the main rod; A supporting structure, wherein the supporting structure is installed inside the main pole; A rotating rod, which is accommodated inside the main rod and plugged into the supporting structure; the rotating rod is a screw rod and a lifting structure facing the supporting structure is screwed onto the screw rod, and a connecting rod group and a telescopic rod group are installed on the lifting structure; An anchoring structure, the anchoring structure is arranged on the supporting structure, and comprises a plurality of groups of slide grooves installed on the supporting structure, a plurality of sliders respectively clamped in the plurality of groups of slide grooves, and a plurality of plug rods respectively connected to the plurality of sliders; An anchor head structure, the anchor head structure is arranged at the bottom of the main pole through a telescopic rod group; The multiple sliders are respectively hinged to the connecting rod group. When the rotating rod rotates, the lifting structure is lifted and lowered along the screw rod and drives the connecting rod group and the telescopic rod group to move longitudinally. The connecting rod group transmits power to the slider to drive the slider to move, so that the insertion rod on the slider moves towards the opening; when the telescopic rod group moves downward to the limit, it drives the anchor head structure to rotate, so that the anchor head structure opens and contracts at the bottom of the main rod.

[0008] Optionally, the supporting structure includes a first platform plate and a second platform plate installed inside the main rod, a ball bearing installed on the first platform plate and the second platform plate respectively and sleeved on the outside of the rotating rod, and an auxiliary rod group installed on the first platform plate.

[0009] Optionally, the multiple openings include two axial openings respectively opened at the top and bottom of the main rod, multiple side openings opened on the axial surface of the main rod and close to the supporting structure, and multiple bottom openings opened at the bottom of the main rod and adapted to the anchor head structure; the number of the multiple side openings is adapted to the number of sliders.

[0010] Optionally, the lifting structure further includes a first lifting nut and a second lifting nut respectively screwed on the rotating rod; The connecting rod group is connected to the first lifting nut and the second lifting nut respectively, and the telescopic rod group is installed on the second lifting nut; The first lifting nut is provided with a plurality of through holes for matching with the auxiliary rod group, so as to limit the first lifting nut and fix its stroke, thereby preventing the first lifting nut from deviating from the preset distance and causing failure between the connecting rod and the rotating rod. Secondly, it can also reduce the jitter during spiral lifting.

[0011] Optionally, a stop plate is also installed on the top of the auxiliary rod group to limit the rising stroke of the first lifting nut.

[0012] Optionally, the connecting rod group includes two upper connecting rods respectively mounted on the first lifting nuts, two lower connecting rods respectively mounted on the second lifting nuts, four first hinge blocks respectively mounted on the bottom of the upper connecting rods and the lower connecting rods, and four rotating rods respectively hinged on the four first hinge blocks; The two upper connecting rods and the two lower connecting rods face the plurality of slide grooves respectively.

[0013] Optionally, the plurality of groups of slide grooves include a first slide groove and a second slide groove symmetrically installed on the first platform plate, and a third slide groove and a fourth slide groove symmetrically installed on the second platform plate; The plurality of sliders include a first slider, a second slider, a third slider and a fourth slider respectively engaged in a plurality of slide grooves; The first slider, the second slider, the third slider and the fourth slider are all equipped with second hinge blocks, and are respectively connected to four rotating rods through the second hinge blocks to transmit the power of the connecting rod group to the sliders.

[0014] Optionally, one end of the first slide groove, the second slide groove, the third slide groove and the fourth slide groove are respectively opposite to the plurality of side openings; The multiple insertion rods are respectively installed on the side of the first slider, the second slider, the third slider and the fourth slider facing the side opening, so that the multiple insertion rods are inserted out of the multiple side openings along the sliding groove under the drive of the first slider, the second slider, the third slider and the fourth slider.

[0015] Optionally, multiple side opening rings are evenly distributed on the main rod surface, and the angle between two side openings at the same height is 180 degrees, so that the insertion rods can be inserted from four directions of the main rod respectively, and the structure is evenly stressed after anchoring.

[0016] Optionally, the telescopic rod set includes a first telescopic rod and a second telescopic rod respectively fixedly mounted on the second lifting nut; Wherein, the first telescopic rod and the second telescopic rod both include a first telescopic section connected to the second lifting nut, and a second telescopic section with one end slidably connected to the first telescopic section and the other end connected to the anchor head structure; The sliding stroke of the first telescopic section and the second telescopic section is smaller than the descending stroke of the first lifting nut and the second lifting nut.

[0017] Optionally, the anchor head structure includes a connecting shaft arranged at the bottom of the main rod, two anchor heads respectively installed at both ends of the connecting shaft, and a limiting rod with one end installed on the inner wall of the main rod and the other end slidably connected to the anchor head; The two anchor heads are distributed at 180° along the connection axis, and grooves facing the limit rod are provided on the sides of the two anchor heads; The tops of the two anchor heads are respectively connected to the telescopic rod groups, and the bottoms are wedge-shaped sections for matching with the bottom openings.

[0018] Optionally, a rotating handle is connected to the top end of the rotating rod, and the style of the rotating handle is not limited to any one of a handlebar type, an armrest type and a steering wheel type.

[0019] In a second aspect, the present invention provides a method for using a recyclable internally rotating built-in anchor rod. Based on the above-mentioned anchor rod, the method comprises: S1. Drill holes at the preset positions according to the size of the main rod until the size and depth of the holes can accommodate the anchor rods; S2, placing the anchor rod in the hole and applying a positive rotational force to the rotation rod; S3. When the rotating rod rotates forward, the lifting structure rises and falls along the screw rod and drives the connecting rod group and the telescopic rod group to move downward. The connecting rod group transmits power to the slider to drive the slider to move toward the opening, so that the insertion rod is inserted from the opening into the soil outside. At the same time, when the telescopic rod group moves downward to the limit, it drives the anchor head structure to rotate outside the main rod, so that the anchor head structure protrudes from the main rod and plugs into the external rock mass. S4, when retrieving the anchor rod, a reverse force is applied to the rotating rod; S5. When the rotating rod rotates in the opposite direction, the lifting structure rises and falls along the screw rod and drives the connecting rod group and the telescopic rod group to move upward. The connecting rod group transmits power to the slider to drive the slider to move away from the opening, so that the inserted rod moves from the outside to the inside of the main rod; at the same time, the telescopic rod group resets upward, driving the anchor head structure to rotate inside the main rod, so that the anchor head structure is retracted from the external rock mass to the inside of the main rod; S6. When both the anchor head structure and the anchoring structure are located inside the main rod, stop applying force to the rotating rod and pull out the anchor rod with the aid of auxiliary equipment.

[0020] Compared with the prior art, the present invention has the following beneficial effects: 1. The rotational force is converted into a longitudinal force through the lifting structure, and transmitted to the anchor structure and the anchor head structure respectively through the connecting rod group and the telescopic rod group. The anchor structure and the anchor head structure can be driven to perform rapid reciprocating motion relative to the main rod without the need for high-precision transmission parts, and ultimately the purpose of efficient recovery of the anchor rod can be achieved. Compared with the existing gear and bearing transmission, it can save real-time maintenance and lubrication procedures, has a simple structure, and can maintain the lifting function as long as the rotating rod is not affected, even if the rod body is deformed by force, so it has a wide range of applications and high recovery efficiency.

[0021] 2. The anchoring structure is equipped with inserted rods in different directions, which can evenly share the stress when the rod body is subjected to force, and further increase the bearing capacity of the anchoring section.

[0022] 3. The anchor head structure rotates driven by the telescopic rod. The telescopic rod adopts a multi-section sliding rod structure with controllable stroke and simple modification. It can be quickly assembled according to specific scenarios.

[0023] 4. The lifting structure, anchoring structure and anchor head structure are all simple mechanical structures. They can be completely retracted without grouting during the recovery process, thus protecting the soil environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of the anchor rod of the present invention; Figure 2 It is a schematic diagram of the internal structure of the main rod of the present invention; Figure 3 It is a structural diagram of the upper half of the lifting structure of the present invention; Figure 4 It is a structural diagram of the lower half of the lifting structure of the present invention; Figure 5 It is a schematic diagram of the anchor head structure of the present invention.

[0025] In the figure: 1. main rod; 101. axial opening; 102. side opening; 103. bottom opening; 2. anchor head structure; 201. anchor head; 202. groove; 203. connecting shaft; 3. rotating rod; 4. supporting structure; 401. first platform plate; 402. second platform plate; 5. lifting structure; 501. first lifting nut; 502. second lifting nut; 6. connecting rod group; 601. upper connecting rod; 602. lower connecting rod; 7. first hinge block; 8. slide groove; 9. slider; 10. plug rod; 11. second hinge block; 12. rotating rod; 13. auxiliary rod; 14. stop plate; 15. telescopic rod group; 1501. first telescopic section; 1502. second telescopic section; 16. limit rod; 17. rotating handle; 18. ball bearing. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention. Example

[0027] This embodiment provides a recyclable internally rotating built-in anchor rod. Figure 1 and Figure 2The structure shown in the figure includes: a main rod 1, a supporting structure 4, a lifting structure 5, an anchoring structure and an anchor head structure 2, wherein the main rod 1 is a hollow structure, a plurality of openings communicating with the outside are arranged on the surface of the main rod 1, and the supporting structure 4 is installed inside the main rod 1; the rotating rod 3 is accommodated inside the main rod 1 and plugged with the supporting structure 4; a section of the rotating rod 3 arranged inside the main rod 1 is a screw rod, the lifting structure 5 is screwed on the screw rod and close to the supporting structure 4, a connecting rod group 6 and a telescopic rod group 15 are installed on the lifting structure 5, the anchoring structure is installed on the supporting structure 4, and the anchor head structure 2 is installed at the bottom of the main rod 1 through the telescopic rod group 15; The anchoring structure includes: multiple groups of slide grooves 8, multiple sliders 9 and multiple plug rods 10. Multiple groups of slide grooves 8 are installed on the supporting structure 4, multiple sliders 9 are respectively clamped in multiple groups of slide grooves 8, and multiple plug rods 10 are respectively connected to multiple sliders 9; multiple sliders 9 are respectively hinged with the connecting rod group 6. When the rotating rod 3 rotates, the lifting structure 5 is lifted and lowered along the screw rod and drives the connecting rod group 6 and the telescopic rod group 15 to move longitudinally. The connecting rod group 6 transmits power to the slider 9 to drive the slider 9 to move so that the plug rod 10 on the slider 9 moves toward the opening; when the telescopic rod group 15 moves downward to the limit, it drives the anchor head structure 2 to rotate so that the anchor head structure 2 opens and contracts at the bottom of the main rod 1. This embodiment can also protect the rotating rod 3 through the main rod 1 and the supporting structure 4. If the main rod 1 is subjected to force, the rotating rod 3 absorbs stress through the main rod 1 and the supporting structure 4 to greatly avoid the possibility of deformation, and finally the anchoring structure and the anchor head structure 2 still have efficient expansion and contraction functions in long-term use and under force.

[0028] Optional, such as Figure 3 and Figure 4 As shown, the support structure 4 includes: a first platform plate 401 and a second platform plate 402; The first platform plate 401 and the second platform plate 402 are respectively installed inside the main rod 1, and the first platform plate 401 and the second platform plate 402 are also provided with axially corresponding through holes, and ball bearings 18 are respectively installed at the through holes. The ball bearings 18 are used to be sleeved on the outside of the rotating rod 3, so that the rotating rod 3 is rotatably connected with the first platform plate 401 and the second platform plate 402 respectively through the ball bearings 18, so as to avoid radial shaking and deviation of the rotating rod 12 when rotating, which is conducive to the stability of the rotating rod 3, and thus maintains the overall stability; A group of auxiliary rods 13 are also installed on the first platform plate 401, which can limit the lifting structure 5 so that the lifting stroke of the lifting structure 5 is fixed.

[0029] Optionally, a stop plate 14 is further installed on the top of the auxiliary rod 13 group to limit the rising stroke of the first lifting nut 501. This embodiment is not limited to using other limiting devices to stop and limit the lifting structure 5.

[0030] Optional, such as Figure 1As shown, the multiple openings include: an axial opening 101, a side opening 102 and a bottom opening 103, wherein there are two axial openings 101, which are opposite to each other along the axial direction of the main rod 1 and the two axial openings 101 are respectively opened at the top and bottom of the main rod 1, and the number of the side openings 102 and the bottom openings 103 are improved accordingly according to the form of the anchoring structure and the anchor head structure 2. The multiple side openings 102 are opened on the axial surface of the main rod 1 and are close to the supporting structure 4; the multiple bottom openings 103 are opened at the bottom of the main rod 1 and are adapted to the anchor head structure 2; specifically, the number of the multiple side openings 102 is adapted to the number of the sliders 9, and the number of the multiple bottom openings 103 matches the number of the anchor heads 201.

[0031] Optionally, the lifting structure 5 further includes: a first lifting nut 501 and a second lifting nut 502 The first lifting nut 501 and the second lifting nut 502 are respectively screwed on the rotating rod 3, the first lifting nut 501 is located above the first platform plate 401, and the second lifting nut 502 is located above the second platform plate 402; A set of connecting rods are symmetrically mounted on the first lifting nut 501 and the second lifting nut 502 respectively; the telescopic rod set 15 is mounted on the second lifting nut 501; The first lifting nut 501 is provided with a plurality of through holes for matching with the auxiliary rod 13 group. The auxiliary rod 13 group can be used to limit the first lifting nut 501 so that its stroke is fixed, thereby preventing the first lifting nut 501 from deviating from the preset distance and causing a fault between the connecting rod and the rotating rod 12. Secondly, it can also reduce the shaking phenomenon during spiral lifting and ensure overall stability.

[0032] Optionally, the connecting rod group 6 includes: an upper connecting rod 601, a lower connecting rod 602, a first hinge block 7 and a rotating rod 12, wherein the upper connecting rod 601 is two and is respectively installed on the first lifting nut 501, the lower connecting rod 602 is two and is respectively installed on the second lifting nut 502, there are four first hinge blocks 7, and the four first hinge blocks 7 are respectively installed at the bottom of the upper connecting rod 601 and the lower connecting rod 602, and there are four rotating rods 12, and the four rotating rods 12 are respectively hinged on the four first hinge blocks 7, and the two upper connecting rods 601 and the two lower connecting rods 602 face multiple groups of slide grooves 8 respectively.

[0033] Optionally, the plurality of chutes 8 include: a first chute 8, a second chute 8, a third chute 8 and a fourth chute 8; wherein the first chute 8 and the second chute 8 are symmetrically mounted on the first platform plate 401, and the third chute 8 and the fourth chute 8 are symmetrically mounted on the second platform plate 402; The multiple sliders 9 include: a first slider 9, a second slider 9, a third slider 9 and a fourth slider 9; the first slider 9, the second slider 9, the third slider 9 and the fourth slider 9 are respectively clamped in multiple groups of slide grooves 8; the first slider 9, the second slider 9, the third slider 9 and the fourth slider 9 are all installed with second hinge blocks 11, and are respectively connected to four rotating rods 12 through the second hinge blocks 11, so as to transmit the power of the connecting rod group 6 to the slider 9, so that each slider 9 slides and cooperates with the clamped slide groove 8.

[0034] Optionally, one end of the first slide groove 8, the second slide groove 8, the third slide groove 8 and the fourth slide groove 8 are respectively opposite to the plurality of side openings 102; The multiple insertion rods 10 are respectively installed on the side of the first slider 9, the second slider 9, the third slider 9 and the fourth slider 9 facing the side opening 102, so that the multiple insertion rods 10 are inserted out of the multiple side openings 102 along the slide groove 8 under the drive of the first slider 9, the second slider 9, the third slider 9 and the fourth slider 9.

[0035] Optionally, multiple side openings 102 are evenly distributed on the surface of the main rod 1, and the distance between two side openings 102 at the same height is 180°, so that the insertion rod 10 can be inserted from four directions of the main rod 1 respectively. After anchoring, the force on the axial surface of the main rod 1 can be evenly shared, thereby increasing the overall stability, avoiding deformation of the main rod 1 due to a single force fulcrum, and improving the stability of anchoring and recovery efficiency.

[0036] Optionally, the telescopic rod group 15 includes: a first telescopic rod and a second telescopic rod; the first telescopic rod and the second telescopic rod are respectively fixedly mounted on the second lifting nut 502; the first telescopic rod and the second telescopic rod both include: a first telescopic section 1501 and a second telescopic section 1502; the first telescopic section 1501 is connected to the second lifting nut 502, one end of the second telescopic section 1502 is slidably connected to the first telescopic section 1501 and the other end is connected to the anchor head structure 2; The sliding stroke of the first telescopic section 1501 and the second telescopic section 1502 is smaller than the descending stroke of the first lifting nut 501 and the second lifting nut 502. When the second lifting nut 502 descends, the first telescopic rod and the second telescopic rod are first contracted, and when the first telescopic rod and the second telescopic rod are contracted to the limit, the descending of the second lifting nut 502 pushes the first telescopic rod and the second telescopic rod to drive the anchor head 201 to rotate.

[0037] Optional, such as Figure 5The anchor head structure 2 shown comprises: a connecting shaft 203, an anchor head 201 and a limiting rod 16; the connecting shaft 203 is received at the bottom of the main rod 1, there are two anchor heads 201, the two anchor heads 201 are respectively mounted at both ends of the connecting shaft 203, one end of the limiting rod 16 is mounted on the inner wall of the main rod 1, and the other end is slidably connected to the anchor head 201; the two anchor heads 201 are distributed at 180 degrees along the connecting shaft 203, and the sides of the two anchor heads 201 are provided with grooves 202 facing the limiting rod 16, so as to limit the sliding stroke of the limiting rod 16; The tops of the two anchor heads 201 are respectively connected to the telescopic rod group 15, and the bottoms are wedge-shaped sections for adapting to the bottom opening 103. Under the push of the telescopic rod group 15, the anchor heads 201 are unfolded and penetrated into the rock and soil, and can be completely retracted without grouting.

[0038] Optionally, the top of the rotating rod 3 is connected with a rotating handle 17, and the style of the rotating handle 17 is not limited to any one of a handlebar type, an armrest type and a steering wheel type. According to the recovery device and the force application device, corresponding forms of improvements are made to make it suitable for both use and recovery processes. Example

[0039] This embodiment provides a method for using a recyclable internally rotating built-in anchor rod. Based on the above-mentioned anchor rod, the method includes: Step 1: Drill holes at preset positions according to the size of the main rod 1 until the size and depth of the holes are large enough to accommodate the anchor rods; Step 2, place the anchor rod in the hole, and apply a positive rotational force to the rotating rod 3; this embodiment is not limited to manual or other force-applying devices, and can quickly realize the anchor rod, so the style of the rotating handle is not limited to one.

[0040] Step 3, when the rotating rod 3 rotates forward, the lifting structure 5 is lifted along the screw rod and drives the connecting rod group 6 and the telescopic rod group 15 to move downward, and the connecting rod group 6 transmits power to the slider 9 to drive the slider 9 to move toward the opening, so that the insertion rod 10 is inserted from the opening into the soil outside; at the same time, when the telescopic rod group 15 moves downward to the limit, it drives the anchor head structure 2 to rotate outward from the main rod 1, so that the anchor head structure 2 protrudes from the main rod 1 and plugs into the external rock mass; in this embodiment, the first lifting nut 501 and the second lifting nut 502 move in the same direction, and at the same time drive the upper connecting rod 60 1 and the lower connecting rod 602 move downward, so that the power is transmitted to the first slider 9, the second slider 9, the third slider 9 and the fourth slider 9 through the hinge block and the rotating rod 12, and the four sliders 9 respectively drive the four plugging rods 10 to plug outward with the soil; when the second lifting nut 502 descends, the first telescopic rod and the second telescopic rod are first contracted, and when the first telescopic rod and the second telescopic rod are contracted to the limit, the second lifting nut 502 descends and pushes the first telescopic rod and the second telescopic rod to drive the anchor head 201 to rotate, and it is unfolded from the bottom of the main rod 1 and penetrates into the rock and soil.

[0041] Step 4: When retrieving the anchor rod, a reverse force is applied to the rotating rod 3; Step 5, when the rotating rod 3 rotates in the opposite direction, the lifting structure 5 is lifted and lowered along the screw rod and drives the connecting rod group 6 and the telescopic rod group 15 to move upward, and the connecting rod group 6 transmits power to the slider 9 to drive the slider 9 to move away from the opening, so that the insertion rod 10 moves from the outside to the main rod 1; at the same time, the telescopic rod group 15 is reset upward, driving the anchor head structure 2 to rotate into the main rod 1, so that the anchor head structure 2 is retracted from the external rock mass to the main rod 1; this embodiment drives the upper connecting rod 601 and the lower connecting rod 602 to move upward, so that the power drives the first slider 9, the second slider 9, the third slider 9 and the fourth slider 9 to slide in the opposite direction through the hinge block and the rotating rod 12, so that the four insertion rods 10 are separated from the soil until they are retracted into the main rod 1; when the second lifting nut 502 rises, the first telescopic rod and the second telescopic rod are first unfolded, and when the first telescopic rod and the second telescopic rod are reset, the rise of the second lifting nut 502 drives the first telescopic rod and the second telescopic rod to drive the anchor head 201 to rotate in the opposite direction, separate from the rock and soil structure, and retract into the main rod 1.

[0042] S6. When both the anchor head structure 2 and the anchoring structure are located inside the main rod 1, stop applying force to the rotating rod 3 and pull out the anchor rod with the aid of auxiliary equipment.

[0043] In summary, the present invention converts the rotational force into a longitudinal force through the lifting structure 5, and transmits it to the anchoring structure and the anchor head structure 2 respectively through the connecting rod group 6 and the telescopic rod group 15. The reciprocating motion of the anchoring structure and the anchor head structure 2 can be realized without high-precision transmission parts. Compared with the existing gear and bearing transmission, it can save the real-time maintenance and lubrication process. The structure is simple. Even if the rod body is deformed by force, the lifting function can be maintained as long as the rotating rod 3 is not affected. It has a wide range of applications and high recovery efficiency. The anchoring structure is provided with a plug rod 10 in different directions, which can evenly share the stress when the rod body is stressed, and further increase the bearing capacity of the anchoring section. The anchor head structure 2 rotates under the drive of the telescopic rod. The telescopic rod adopts a multi-stage sliding rod structure with controllable stroke and simple modification. It can be quickly assembled according to the specific scene. The lifting structure 5, the anchoring structure and the anchor head structure 2 are all simple mechanical structures. They can be completely recovered without grouting during the recovery process to protect the soil environment.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

Claims

1. A recyclable internally rotating built-in anchor rod, characterized in that: It comprises a main rod, which is a hollow structure and has a plurality of openings on its surface that communicate with the outside world; A supporting structure, wherein the supporting structure is installed inside the main pole; A rotating rod, which is accommodated inside the main rod and plugged into the supporting structure; the rotating rod is a screw rod and a lifting structure facing the supporting structure is screwed onto the screw rod, and a connecting rod group and a telescopic rod group are installed on the lifting structure; An anchoring structure, the anchoring structure is arranged on the supporting structure, and comprises a plurality of groups of slide grooves installed on the supporting structure, a plurality of sliders respectively clamped in the plurality of groups of slide grooves, and a plurality of plug rods respectively connected to the plurality of sliders; An anchor head structure, the anchor head structure is arranged at the bottom of the main pole through a telescopic rod group; The multiple sliders are respectively hinged to the connecting rod group. When the rotating rod rotates, the lifting structure is lifted and lowered along the screw rod and drives the connecting rod group and the telescopic rod group to move longitudinally. The connecting rod group transmits power to the slider to drive the slider to move so that the insertion rod on the slider moves towards the opening; when the telescopic rod group moves downward to the limit, it drives the anchor head structure to rotate, so that the anchor head structure opens and contracts at the bottom of the main rod.

2. The recyclable internally rotating built-in anchor rod according to claim 1 is characterized in that: The support structure comprises a first platform plate and a second platform plate installed inside the main rod, ball bearings respectively installed on the first platform plate and the second platform plate and sleeved on the outside of the rotating rod, and an auxiliary rod group installed on the first platform plate.

3. The recyclable internally rotating built-in anchor rod according to claim 1 is characterized in that: The multiple openings include two axial openings respectively opened at the top and bottom of the main rod, multiple side openings opened on the axial surface of the main rod and close to the supporting structure, and multiple bottom openings opened at the bottom of the main rod and adapted to the anchor head structure; the number of the multiple side openings is adapted to the number of sliders.

4. The recyclable internally rotating built-in anchor rod according to claim 2 is characterized in that: The lifting structure further comprises a first lifting nut and a second lifting nut respectively screwed on the rotating rod; The connecting rod group is connected to the first lifting nut and the second lifting nut respectively, and the telescopic rod group is installed on the second lifting nut; The first lifting nut is provided with a plurality of through holes for matching with the auxiliary rod set.

5. The retrievable internally rotating built-in anchor rod according to claim 4 is characterized in that: The connecting rod group includes two upper connecting rods respectively mounted on the first lifting nuts, two lower connecting rods respectively mounted on the second lifting nuts, four first hinge blocks respectively mounted on the bottom of the upper connecting rods and the lower connecting rods, and four rotating rods respectively hinged on the four first hinge blocks; The two upper connecting rods and the two lower connecting rods face the plurality of slide grooves respectively.

6. The retrievable internally rotating built-in anchor rod according to claim 5, characterized in that: The plurality of groups of slide grooves include a first slide groove and a second slide groove symmetrically mounted on the first platform plate, and a third slide groove and a fourth slide groove symmetrically mounted on the second platform plate; The plurality of sliders include a first slider, a second slider, a third slider and a fourth slider respectively engaged in a plurality of slide grooves; The first slider, the second slider, the third slider and the fourth slider are all equipped with second hinge blocks, and are respectively connected to four rotating rods through the second hinge blocks to transmit the power of the connecting rod group to the sliders.

7. The retrievable internally rotating built-in anchor rod according to claim 6 is characterized in that: One end of the first slide slot, the second slide slot, the third slide slot and the fourth slide slot are respectively opposite to the plurality of side openings; The plurality of insertion rods are respectively installed on the side of the first slider, the second slider, the third slider and the fourth slider facing the side opening, so that the plurality of insertion rods are inserted out of the plurality of side openings along the slide grooves under the drive of the first slider, the second slider, the third slider and the fourth slider; A plurality of side opening rings are evenly distributed on the main rod surface, and the distance between two side openings at the same height is 180 degrees, so that the insertion rod can be inserted from four directions of the main rod respectively.

8. The retrievable internally rotating built-in anchor rod according to claim 4, characterized in that: The telescopic rod assembly comprises a first telescopic rod and a second telescopic rod respectively fixedly mounted on a second lifting nut; Wherein, the first telescopic rod and the second telescopic rod both include a first telescopic section connected to the second lifting nut, and a second telescopic section with one end slidably connected to the first telescopic section and the other end connected to the anchor head structure; The sliding stroke of the first telescopic section and the second telescopic section is smaller than the descending stroke of the first lifting nut and the second lifting nut.

9. The retrievable internally rotating built-in anchor rod according to claim 2, characterized in that: The anchor head structure comprises a connecting shaft arranged at the bottom of the main rod, two anchor heads respectively installed at both ends of the connecting shaft, and a limiting rod with one end installed on the inner wall of the main rod and the other end slidably connected to the anchor head; The two anchor heads are distributed at 180 degrees along the connection axis, and grooves facing the limit rod are provided on the sides of the two anchor heads; The tops of the two anchor heads are respectively connected to the telescopic rod group, and the bottoms are adapted to the bottom openings.

10. A method for working an internally rotating anchor rod, characterized in that: Based on the anchor rod according to claim 1, the method comprises: S1. Drill holes at the preset positions according to the size of the main rod until the size and depth of the holes can accommodate the anchor rods; S2, placing the anchor rod in the hole and applying a positive rotational force to the rotation rod; S3. When the rotating rod rotates forward, the lifting structure rises and falls along the screw rod and drives the connecting rod group and the telescopic rod group to move downward. The connecting rod group transmits power to the slider to drive the slider to move toward the opening, so that the insertion rod is inserted from the opening into the soil outside. At the same time, when the telescopic rod group moves downward to the limit, it drives the anchor head structure to rotate outside the main rod, so that the anchor head structure protrudes from the main rod and plugs into the external rock mass. S4, when retrieving the anchor rod, a reverse force is applied to the rotating rod; S5. When the rotating rod rotates in the opposite direction, the lifting structure rises and falls along the screw rod and drives the connecting rod group and the telescopic rod group to move upward. The connecting rod group transmits power to the slider to drive the slider to move away from the opening, so that the inserted rod moves from the outside to the inside of the main rod; at the same time, the telescopic rod group resets upward, driving the anchor head structure to rotate inside the main rod, so that the anchor head structure is retracted from the external rock mass to the inside of the main rod; S6. When both the anchor head structure and the anchoring structure are located inside the main rod, stop applying force to the rotating rod and pull out the anchor rod with the aid of auxiliary equipment.

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