Dispersed stress type anti-drop anchor cable

Abstract

The utility model discloses a dispersed stress type anti-drop anchor cable, which belongs to the field of anchor cables and structurally comprises a grouting pipe, an outer anchor head, an inner anchor head, a tension line and a guide cap, the inner anchor head comprises a pipe hole, a novel bearing plate, a clamping piece hole, a clamping piece, a clamping groove, a first cover plate, a first line passing hole, a placing groove, a line passing hole and a lock hole, and the clamping piece is composed of more than two arc-shaped pieces. The novel bearing plate is arranged, the bearing plate is provided with the conical clamping piece hole and the combined clamping piece, and the first cover plate provided with the containing groove and the first wire passing hole is combined, so that when the tensioning wire is assembled, the clamping piece is in a loose state in the clamping piece hole and the containing groove, the tensioning wire cannot be clamped, and quick threading is facilitated; when the anchor cable is tensioned, the tensioning line drives the clamping piece to move into the clamping piece hole, the clamping piece is gradually contracted to clamp the tensioning line, the clamping degree can be increased along with tensioning, the anchor cable can be better stressed after being tensioned, observation is not needed, the tensioning condition is stable, and the tensioning effect and stability can be better guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of anchor cables, and specifically relates to a distributed force-bearing anti-detachment anchor cable. Background Technology

[0002] Anchoring engineering uses prestressed anchor cable technology, which applies a large amount of prestress to the structure to be reinforced during the construction process and before it is put into use, so that the reinforced structure remains stable. Therefore, anchoring engineering will be widely used in permanent civil engineering reinforcement projects such as landslides, high slopes, and dam foundations.

[0003] During anchor construction, a pressure-dispersing construction method is used. By combining multiple inner anchor heads in segments, the concentrated tensile force is transformed into several smaller pressures, which are distributed and acted on several shorter anchoring sections. These pressures transmit the soil and rock resistance from bottom to top, significantly reducing the peak stress of the anchoring section and distributing the bond stress more evenly across the entire anchoring length, thus significantly improving the anchor's bearing capacity. The use of unbonded prestressed tensioning wire, coupled with the pressure on the anchor grout, makes it less prone to cracking and forms a multi-layered anti-corrosion protection, solving the anchor's durability problem.

[0004] like Figure 1 As shown, traditional internal anchor heads are generally composed of an old-style bearing plate, a compression sleeve, a compression spring, and a limiting plate. During tensioning, the limiting plate drives the compression sleeve and compression spring to compress and lock the tensioning wire, thereby achieving stable tensioning.

[0005] However, when using existing technology, during the compression and fixing of the tension wire by the compression sleeve and compression spring, the tension wire is prone to loss of force due to the material of the compression sleeve and compression spring, deformation of the equipment, human operation, or over-tensioning. This results in the inner anchor head being unstressed or poorly stressed. At the same time, because the compression sleeve and compression spring are linear, the inner anchor head is also installed inside the mountain or other structures. Furthermore, the compression sleeve, compression spring, and exposed steel strand head at the top cannot achieve a sealing effect. During assembly and tensioning, the internal changes cannot be observed by the staff. Therefore, it is impossible to guarantee the deformation locking of the tension wire, which cannot guarantee the construction quality and may cause subsequent quality, safety, and service life issues.

[0006] Furthermore, in the use of existing technology, the stress holes and cable passage holes of the inner anchor head are arranged in the same loop. This leads to an increase in the number of stress holes and cable passage holes when the anchor holes are limited due to multiple requirements and anchor cable construction requirements. The stress holes and cable passage holes can only be arranged outwards on the inner anchor head. This results in the stress holes being unable to be well covered by cement after the tension wire is installed and grouting is performed. This leads to poor stress resistance and protection. At the same time, the stress holes being too close to the edge of the inner anchor head can easily cause the inner anchor head to be damaged during the stress process. Utility Model Content

[0007] (a) Technical problems to be solved

[0008] To overcome the shortcomings of existing technologies, a distributed force-bearing anti-detachment anchor cable is proposed. This addresses the issue that in existing technologies, during the compression and fixing of the tension wire by the compression sleeve and compression spring, the tension wire is easily de-stressed due to material or equipment deformation of the compression sleeve and compression spring, human error, or over-tensioning. This results in the inner anchor head being unstressed or poorly stressed. Furthermore, because the compression sleeve and compression spring are linear, and the inner anchor head is assembled and used inside the mountain or other structures, the compression sleeve, compression spring, and exposed steel strand ends at the top do not achieve a sealing effect. During assembly and tensioning, internal changes cannot be observed by workers, thus failing to guarantee the deformation locking of the tension wire. This compromises construction quality and may lead to subsequent quality, safety, and service life issues.

[0009] Secondly, in the use of existing technology, the arrangement of the stress holes and cable passage holes of the inner anchor head is on the same loop. This leads to a situation where the anchor holes are limited due to multiple requirements and anchor cable construction requirements. As a result, the number of stress holes and cable passage holes needs to be increased. The arrangement of stress holes and cable passage holes can only be placed on the inner anchor head outwards. This also leads to a situation where, after the tension wire is installed and grouting is done, the tension wire is too close to the edge of the inner anchor head and cannot be well covered by cement, resulting in poor stress resistance and protection. At the same time, the stress holes being too close to the edge of the inner anchor head can easily cause the inner anchor head to be damaged during the stress process.

[0010] (II) Technical Solution

[0011] This utility model is achieved through the following technical solution: This utility model proposes a distributed force-bearing anti-detachment anchor cable, the structure of which includes a grouting pipe, an outer anchor head, an inner anchor head, a tension wire, and a guide cap. The inner anchor head is provided with one or more according to the dispersion requirements. One end of the guide cap is connected to the grouting pipe and the innermost inner anchor head. The outer anchor head and the inner anchor head are sleeved on the grouting pipe. The tension wire is also installed through the outer anchor head and the inner anchor head.

[0012] The inner anchor head includes a pipe hole, a new type of bearing plate, a clamping hole, a clamping plate, a slot, a first cover plate, a first through hole, a placement slot, a through hole, and a locking hole. The new type of bearing plate and the first cover plate are locked together at one end via the locking hole. Both the new type of bearing plate and the first cover plate have a pipe hole penetrating their middle sections for the passage of the grouting pipe. The new type of bearing plate also has clamping holes and through holes evenly distributed around the pipe hole. The first through hole has an equal number of holes as the sum of the clamping holes and through holes. The positions correspond to the clamping hole and the wire guide hole. The clamping hole is a conical hole, with the larger end of the clamping hole facing the first cover plate. The first cover plate has a placement groove at the junction with the clamping hole. The diameter of the placement groove is greater than or equal to the maximum diameter of the clamping hole. The clamping hole and the placement groove are equipped with clamping pieces. Each clamping piece is composed of two or more arc-shaped pieces. After the two or more arc-shaped pieces are combined, a slot is formed in the middle. The layout direction of the slot is consistent with the first wire guide hole. The minimum diameter of the slot is less than or equal to the diameter of the tension wire.

[0013] Furthermore, the clamping holes are grouped into sets of two or more, and the new carrier plate is provided with one set of clamping holes. Each set of wire-passing holes has the same number of clamping holes, and the total number of sets of wire-passing holes and clamping holes is equal to the number of segments when the device is dispersed and fixed.

[0014] Furthermore, the clamping hole is arranged near the pipe hole, and the wire passage hole is arranged away from the pipe hole.

[0015] Furthermore, the first cover plate is also equipped with a protective head on the side away from the new bearing plate.

[0016] Furthermore, a threaded coupling ring is fixed to the side of the first cover plate away from the new bearing plate, and the protective head is locked to the first cover plate through the threaded coupling ring.

[0017] Furthermore, the slot, the first through hole, and the through hole are straight holes.

[0018] Furthermore, the surface of the card slot is a friction surface that increases friction.

[0019] Furthermore, the slot is a threaded groove or a toothed groove.

[0020] Furthermore, grease is injected into the clamping hole, placement groove, and protective head to increase the airtightness of the clamping hole, placement groove, and protective head, and reduce the clamping stripping from the tension wire caused by environmental corrosion.

[0021] Furthermore, a first sealing ring is also fitted between the new bearing plate and the first cover plate to further enhance the sealing of the clamping hole and the placement groove, thereby increasing safety performance and service life.

[0022] Furthermore, the first sealing ring is arranged around the placement groove.

[0023] Furthermore, the first sealing ring is a rubber ring.

[0024] Furthermore, the through-holes of the clip holes and the wire-passing holes are aligned with the through-holes.

[0025] Furthermore, the tensioning wire is a steel strand.

[0026] Furthermore, the new bearing plate is also locked with a second cover plate on the side away from the first cover plate. The second cover plate is provided with a second through hole, and the second through hole has a number that communicate with the first through hole. The clamping hole of the new bearing plate is provided with a sealing groove at the junction with the second through hole, and a second sealing ring is assembled in the sealing groove.

[0027] Furthermore, the second sealing ring is a rubber ring.

[0028] (III) Beneficial Effects

[0029] One of the above technical solutions has the following advantages or beneficial effects:

[0030] 1) To address the issue that in existing technologies, during the compression and fixing of the tension wire by the compression sleeve and compression spring, the tension wire is prone to detachment due to material variations in the compression sleeve and spring, deformation of the equipment, human error, or over-tensioning. This results in the inner anchor head being understressed or poorly stressed. Furthermore, because the compression sleeve and compression spring are linear, and the inner anchor head is installed inside the mountain or other structures, the compression sleeve, compression spring, and exposed steel strand ends do not achieve a proper seal. During assembly and tensioning, internal changes cannot be observed by workers, making it impossible to guarantee the deformation locking of the tension wire. This compromises construction quality and can easily lead to subsequent quality issues. To address safety and service life concerns, a new type of support plate is designed. This plate features tapered clamping holes and combined clamping plates, along with a first cover plate containing a placement groove and a first through hole. During assembly, the clamping plates are relaxed within the clamping holes and placement groove, preventing the tension cable from jamming and facilitating quick threading. During tensioning, the tension cable moves the clamping plates into the clamping holes, gradually contracting to tighten the tension cable. The clamping tightness increases with tensioning, resulting in better stress distribution on the anchor cable. The tensioning is stable and requires no monitoring, ensuring better tensioning effect and stability.

[0031] 2) To address the issue that existing technology uses the same loop for the stress-bearing holes and cable-passing holes in the inner anchor head, which limits the number of anchor holes when there are multiple sections or the requirements of anchor cable construction, the number of stress-bearing holes and cable-passing holes must be increased. The placement of these holes can only be towards the outside of the inner anchor head. This results in the tension wire not being adequately covered by cement after the tension holes are installed and grouted, leading to poor stress resistance and protection. Furthermore, the stress-bearing holes being too close to the edge of the inner anchor head can easily cause damage to the inner anchor head during stress. A staggered hole structure, with the clamping holes positioned inwards and the cable-passing holes positioned outwards, combined with the separate placement of the clamping holes and cable-passing holes, allows the inner anchor head to better ensure its own stress resistance while ensuring smooth passage of the tension wire even with multiple holes. This avoids damage caused by the clamping holes being positioned outwards when multiple holes are added, and prevents poor stress resistance due to cement coverage. Attached Figure Description

[0032] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0033] Figure 1 This is a schematic diagram of the cross-sectional structure of a traditional internal anchor head in the background art;

[0034] Figure 2 This is a structural schematic diagram of a distributed force-bearing anti-detachment anchor cable according to the present invention;

[0035] Figure 3 This is a schematic cross-sectional view of the inner anchor head of this utility model.

[0036] Figure 4 This is a schematic diagram of the structure of the clip of this utility model;

[0037] Figure 5 This is a schematic cross-sectional view of the inner anchor head of this utility model after the clips have been removed;

[0038] Figure 6 This is a schematic diagram of the structure of the first novel support plate adjacent to the first cover plate in Embodiment 1 of this utility model;

[0039] Figure 7 This is a schematic diagram of the structure of the second novel support plate adjacent to the first cover plate in Embodiment 1 of this utility model;

[0040] Figure 8 This is a schematic diagram of the structure of the third novel support plate adjacent to the first cover plate in Embodiment 1 of this utility model;

[0041] Figure 9 This is a schematic cross-sectional view of the inner anchor head after the clips are removed in Embodiment 4 of this utility model.

[0042] Figure 10This is a schematic diagram of the structure of the new bearing plate near the first cover plate in Embodiment 4 of this utility model;

[0043] Figure 11 This is a schematic cross-sectional view of the inner anchor head after the clips are removed in Embodiment 5 of this utility model;

[0044] Figure 12 This is a schematic diagram of the structure of the new bearing plate near the first cover plate in Embodiment 5 of this utility model;

[0045] Figure 13 This is a schematic diagram of the structure of the first novel support plate near the first cover plate in Embodiment 2 of this utility model;

[0046] Figure 14 This is a schematic diagram of the structure of the second novel support plate near the first cover plate in Embodiment 2 of this utility model;

[0047] Figure 15 This is a schematic diagram of the structure of the third novel support plate near the first cover plate in Embodiment 2 of this utility model;

[0048] Figure 16 This is a structural schematic diagram of a distributed force-bearing anti-detachment anchor cable according to Embodiment 3 of this utility model;

[0049] Figure 17 This is a schematic diagram of the structure of the new bearing plate of the end anchor head near the first cover plate in Embodiment 3 of this utility model;

[0050] Figure 18 This is a schematic diagram of the structure of the new segmented anchor head bearing plate near the first cover plate in Embodiment 3 of this utility model;

[0051] Figure 19 This is a schematic diagram of the structure of the new segmented anchor head bearing plate near the first cover plate in Embodiment 3 of this utility model;

[0052] Figure 20 This is a cross-sectional structural diagram of the novel inner anchor head in Embodiment Six of this utility model;

[0053] Figure 21 This is a cross-sectional structural diagram of the novel inner anchor head in Embodiment Seven of this utility model;

[0054] Figure 22 This is a cross-sectional structural diagram of the novel inner anchor head in Embodiment 8 of this utility model;

[0055] In the diagram: Grouting pipe-1, outer anchor head-2, inner anchor head-3, tension wire-4, guide cap-5, old bearing plate-3a, extrusion sleeve-3b, extrusion spring-3c, limiting piece-3d, pipe hole-3e, new bearing plate-3f, clamping hole-3g, clamping piece-3h, slot-3i, first cover plate-3j, first through hole-3k, placement groove-3l, through hole-3m, lock hole-3n, first sealing ring-3o, end anchor head-3p, segmented anchor head-3q, arc-shaped piece-3h1, protective head-3j1, threaded butt ring-3j2, sealing groove-3f1, second cover plate-3f2, second through hole-3f3, second sealing ring-3f4. Detailed Implementation

[0056] The present invention will be further described in detail below with reference to the embodiments, but the implementation of the present invention is not limited thereto.

[0057] like Figure 1 As shown, the traditional inner anchor head is generally composed of the old-style bearing plate 3a, compression sleeve 3b, compression spring 3c and limiting plate 3d. During tensioning, the limiting plate drives the compression sleeve and compression spring to compress and lock the tensioning wire, thereby achieving stable tensioning.

[0058] Example 1:

[0059] like Figure 2-8 As shown, this utility model provides a distributed stress-resistant anti-detachment anchor cable: its structure includes a grouting pipe 1, an outer anchor head 2, an inner anchor head 3, a tension wire 4, and a guide cap 5. The inner anchor head 3 is provided with 3 according to the dispersion requirements. One end of the guide cap 5 is connected to the grouting pipe 1 and the innermost inner anchor head 3. The outer anchor head 2 and the inner anchor head 3 are sleeved on the grouting pipe 1. The tension wire 4 is also installed through the outer anchor head 2 and the inner anchor head 3.

[0060] The inner anchor head 3 includes a pipe hole 3e, a new type of bearing plate 3f, a clamping hole 3g, a clamping piece 3h, a slot 3i, a first cover plate 3j, a first through hole 3k, a placement slot 3l, a through hole 3m, and a locking hole 3n. The new type of bearing plate 3f and the first cover plate 3j are locked together at one end through the locking hole 3n. The pipe hole 3e is provided through the middle of both the new type of bearing plate 3f and the first cover plate 3j. The pipe hole 3e is used for the passage of the grouting pipe 1. The new type of bearing plate 3f is also evenly provided with clamping holes 3g and through holes 3m around the pipe hole 3e. The number of first through holes 3k is equal to the sum of the number of clamping holes 3g and through holes 3m. The position of the through hole 3k corresponds to the clamping hole 3g and the through hole 3m. The clamping hole 3g is a conical hole, with the larger end of the clamping hole 3g facing the first cover plate 3j. The first cover plate 3j is provided with a placement groove 3l at the junction with the clamping hole 3g. The diameter of the placement groove 3l is greater than or equal to the maximum diameter of the clamping hole 3g. A clamping piece 3h is provided in the clamping hole 3g and the placement groove 3l. The clamping piece 3h is composed of three arc-shaped pieces 3h1. After the three arc-shaped pieces 3h1 are combined, a slot 3i is formed in the middle. The layout direction of the slot 3i is consistent with that of the first through hole 3k. The minimum diameter of the slot 3i is less than or equal to the diameter of the tension wire 4.

[0061] Among them, the clamping holes 3g are grouped in pairs, the new bearing plate 3f is provided with one group of clamping holes 3g, each group of wire passing holes 3m is provided with the same number of clamping holes 3g, and there are 2 groups of wire passing holes 3m.

[0062] Among them, the clamping holes 3g of the three inner anchor heads 3 are all located in different orientations, and the clamping holes 3g of two adjacent inner anchor heads 3 are located in the same orientation as one of the sets of wire passage holes 3m.

[0063] The clamping hole 3g is arranged adjacent to the pipe hole 3e, and the wire passage hole 3m is arranged away from the pipe hole 3e.

[0064] Among them, the card slot 3i, the first through hole 3k and the through hole 3m are straight holes.

[0065] The surface of the slot 3i is a friction surface that increases friction.

[0066] The slot 3i is a threaded groove or a toothed groove.

[0067] The clamping hole 3g and the placement groove 3l are filled with grease to increase the airtightness of the clamping hole 3g and the placement groove 3l and reduce the loss of tension between the clamping piece 3h and the tension wire 4 caused by environmental corrosion.

[0068] Implementation plan: During equipment use, the tensioning wire 4 can be directly inserted into the small opening side of the clamping hole 3g of the new bearing plate 3f, and then out through the first through hole 3 of the first cover plate 3j. At this time, the clamping piece 3h in the clamping hole 3g is in a relaxed state in the clamping hole 3g and the placement groove 3l, and will not lock the tensioning wire 4, so that the tensioning wire 4 can be quickly threaded and assembled. When tensioning, the tensioning wire 4 will be driven by the clamping piece 3h's slot 3i to move the clamping piece 3h into the clamping hole 3g, and gradually contract the clamping piece 3h as it moves, so that the clamping piece 3h clamps the tensioning wire 4, and the clamping tightness will become tighter as tensioning occurs, so that the anchor cable can receive better force after tensioning. There is no need to observe, the tensioning situation is stable, and the tensioning effect and stability can be better guaranteed.

[0069] Furthermore, during equipment use, after the tension wire 4 passes through, except when it is installed in the clamping hole 3g when it is installed in the inner anchor head 3 that needs to bear tension, all other inner anchor heads 3 that it passes through during its passage pass through the wire hole 3m. At this time, the equipment has a staggered hole structure with the clamping hole 3g set inward and the wire hole 3m set outward. Combined with the separate layout of the clamping hole 3g and the wire hole 3m, the force on the inner anchor head 3 is always on the inner side when the tension wire 4 is tensioned. This allows the inner anchor head 3 to better ensure its own force in the case of multiple holes, while also ensuring the smooth passage of other tension wires 4. This avoids the damage caused by the clamping hole 3g being placed outward when multiple holes are added, as well as the situation of poor force under cement coverage. Although the inner and outer settings will cause a certain tilt of the tension wire 4, the tilt can be made very slight due to the control of the construction distance and the distance between the inner and outer holes, which is within the construction error range and does not affect the tensioning use.

[0070] Example 2:

[0071] like Figure 13-15 As shown in the first embodiment, the clamping holes 3g are grouped into sets of 3, and the new bearing plate 3f is provided with one set of clamping holes 3g. The wire passage holes 3m are provided in each group with the same number of clamping holes 3g.

[0072] This arrangement makes the clamping holes 3g of each inner anchor head 3 arranged in a 3-triangle pattern, which increases the stability of the force when each inner anchor head 3 is tensioned. However, when tensioning is carried out in more segments, the position of the holes is more restricted, and other structures and connection methods are inconvenient.

[0073] Increasing the number of clamping holes 3g per set on each inner anchor head 3 will result in a denser arrangement of holes in the inner anchor heads 3, which will be more inconvenient when there are more inner anchor heads 3.

[0074] Example 3:

[0075] like Figure 16-19As shown, compared to Embodiment 1 or 2, the inner anchor head 3 is divided into two types: end anchor head 3p and segmented anchor head 3q. The segmented anchor head 3q is provided in more than one according to the dispersion requirements. The segmented anchor head 3q is composed of a pipe hole 3e, a new type of bearing plate 3f, a clamping hole 3g, a clamping piece 3h, a slot 3i, a first cover plate 3j, a first through hole 3k, a placement groove 3l, a through hole 3m, and a locking hole 3n. The end anchor head 3p is missing the through hole 3m compared to the segmented anchor head 3q.

[0076] Among them, the clamping holes 3g are grouped in groups of two or more, and the clamping holes 3g in each group are evenly distributed on the new bearing plate 3f of the end anchor head 3p and the segmented anchor head 3q. The number of wire passage holes 3m in each group is equal to the number of clamping holes 3g. The total number of groups of wire passage holes 3m and clamping holes 3g is equal to the number of segments when they are dispersed and fixed. The number of groups of wire passage holes 3m on each segmented anchor head 3q gradually increases by 1 from the side adjacent to the end anchor head 3p to the side away from the end anchor head 3p.

[0077] The clamping holes 3g of the end anchor 3p and one or more segmented anchors 3q are all located in different orientations. The clamping holes 3g of two adjacent segmented anchors 3q are located in the same orientation as one set of wire-passing holes 3m. The end anchor 3p is located in the same orientation as the wire-passing holes 3m of the adjacent segmented anchors 3q.

[0078] When the 3m through hole is laid out, the segmented anchor head 3q with the maximum number of 3m through holes can be used as the main body. The 3m through holes and the clamping hole 3g are evenly laid out on the segmented anchor head 3q along the pipe hole 3e as the center. Then, when the number of 3m through holes of segmented anchor head 3q is reduced, the orientation of the corresponding 3m through holes is not changed.

[0079] This design avoids the situation of extra wire holes 3m in different positions of the inner anchor head 3, which can prevent environmental corrosion from entering the clamping hole 3g through the extra wire holes 3m. It saves some processing steps and costs of the inner anchor head 3. However, it requires the use of complete sets of inner anchor heads 3 according to the scattered segment requirements, which reduces the versatility of each inner anchor head 3. Other structures and connection methods are inconvenient.

[0080] Example 4:

[0081] like Figure 9-10 As shown, relative to Embodiment 1, 2, or 3, a first sealing ring 3o is also assembled between the new bearing plate 3f and the first cover plate 3j, further increasing the sealing of the clamping hole 3g and the placement groove 3l, thereby increasing safety performance and service life.

[0082] The first sealing ring 3o is arranged around the placement groove 3l.

[0083] The first sealing ring 3o is a rubber ring.

[0084] The penetrating directions of the clip hole 3g and the wire passage hole 3m are consistent with those of the tube hole 3e.

[0085] This design increases the protection of the clip 3h in the clip hole 3g and the placement slot 3l, reducing the corrosion of the clip 3h. The rest of the structure and effect remain unchanged.

[0086] Example 5:

[0087] like Figure 11-12 As shown, in contrast to embodiment four, the first sealing ring 3o is arranged around the pipe hole 3e and along the outer edge of the new bearing plate 3f.

[0088] This setup employs an alternative method to enhance the protection of the clip hole 3g and the clip 3h within the placement slot 3l, reducing the likelihood of the clip 3h being corroded. Compared to embodiment four, it is easier to assemble. However, if there are extra wire holes 3m, these extra wire holes 3m need to be sealed. The rest of the structure and effect remain unchanged.

[0089] Example 6:

[0090] like Figure 20 As shown, compared to the previous embodiment, the first cover plate 3j is also fixedly connected to a protective head 3j1 on the side away from the new bearing plate 3f.

[0091] The protective head is also filled with grease.

[0092] During the threading process, tension wire 4 is prone to friction with clamps 3h, which causes wear on the protective layer and makes it susceptible to environmental corrosion during subsequent use.

[0093] This configuration allows one end of the tension wire 4 to pass through the inner anchor head 3 and be placed in the protective head 3j1 during assembly, instead of being exposed. This increases the protection during the assembly of the tension wire 4 and reduces the risk of wear and corrosion of the protective layer due to end-to-end friction. The rest of the structure and effect remain unchanged.

[0094] Example 7:

[0095] like Figure 21 As shown, in contrast to embodiment six, the first cover plate 3j is also equipped with a detachable protective head 3j1 on the side away from the new bearing plate 3f.

[0096] Among them, the first cover plate 3j is also fixed with a threaded docking ring 3j2 on the side away from the new bearing plate 3f, and the protective head 3j1 is locked to the first cover plate 3j through the threaded docking ring 3j2.

[0097] Compared to Embodiment Six, this configuration adds the detachability of the protective head 3j1, making it easier to determine whether the tension line 4 is properly threaded before sealing and protecting it. The rest of the structure and effect remain unchanged.

[0098] Example 8:

[0099] like Figure 22 As shown, compared to the previous embodiment, the new bearing plate 3f is also locked with a second cover plate 3f2 on the side away from the first cover plate 3j. The second cover plate 3f2 is provided with a second through hole 3f3. The second through hole 3f3 is provided with a number of holes communicating with the first through hole 3k. The clamping hole 3g provided on the new bearing plate 3f is provided with a sealing groove 3f1 at the junction with the second through hole 3f3. A second sealing ring 3f4 is assembled in the sealing groove 3f1.

[0100] The second sealing ring 3f4 is a rubber ring.

[0101] During the tensioning process, the tensioning wire 4 is prone to wear due to the friction caused by the movement and tightening of the clamp 3h. At the same time, water, soil and other substances in the external environment can easily seep into the clamp 3h from the tensioning point of the tensioning wire 4, causing corrosion of the clamp 3h and the tensioning wire 4.

[0102] This setup, by adding protection to the tension line 4 on the side of the new bearing plate 3f away from the first cover plate 3j, allows the worn parts of the tension line 4 after tensioning to be sealed by the second cover plate 3f2 and the second sealing ring 3f4, preventing corrosion after tensioning and further increasing the safety and durability of the tension line 4 and the clamping plate 3h. The rest of the structure and effect remain unchanged.

[0103] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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 utility model.

[0104] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0105] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A distributed stress-resistant anti-detachment anchor cable, the structure of which includes a grouting pipe (1), an outer anchor head (2), an inner anchor head (3), a tension wire (4) and a guide cap (5), wherein the inner anchor head (3) is provided with one or more according to the dispersion requirements, and one end of the guide cap (5) is connected to the grouting pipe (1) and the innermost inner anchor head (3), the outer anchor head (2) and the inner anchor head (3) are sleeved on the grouting pipe (1), and the tension wire (4) is also installed through the outer anchor head (2) and the inner anchor head (3); characterized in that The inner anchor head (3) includes a pipe hole (3e), a new type of bearing plate (3f), a clamping hole (3g), a clamping piece (3h), a slot (3i), a first cover plate (3j), a first through hole (3k), a placement slot (3l), a through hole (3m), and a locking hole (3n). The new type of bearing plate (3f) and the first cover plate (3j) are locked together at one end through the locking hole (3n). The pipe hole (3e) is provided through the middle of both the new type of bearing plate (3f) and the first cover plate (3j). The pipe hole (3e) is used for the passage of the grouting pipe (1). The new type of bearing plate (3f) is also evenly provided with clamping holes (3g) and through holes (3m) with the pipe hole (3e) as the center. The first through hole (3k) has a number equal to the sum of the clamping holes (3g) and the through holes (3m). The first through hole (3k) is positioned corresponding to the clamping hole (3g) and the through hole (3m). The clamping hole (3g) is a conical hole, with the larger end of the clamping hole (3g) facing the first cover plate (3j). The first cover plate (3j) is provided with a placement groove (3l) at the junction with the clamping hole (3g). The diameter of the placement groove (3l) is greater than or equal to the maximum diameter of the clamping hole (3g). The clamping hole (3g) and the placement groove (3l) are provided with clamping pieces (3h). The clamping pieces (3h) are composed of two or more arc-shaped pieces (3h1). After the two or more arc-shaped pieces (3h1) are combined, a slot (3i) is formed in the middle. The layout direction of the slot (3i) is consistent with that of the first through hole (3k). The minimum diameter of the slot (3i) is less than or equal to the diameter of the tension wire (4).

2. The anti-drop anchor cable of claim 1, wherein: The clamping holes (3g) are grouped in groups of two or more. The new bearing plate (3f) is provided with one group of clamping holes (3g). Each group of wire-passing holes (3m) has the same number as the clamping holes (3g). The total number of groups of wire-passing holes (3m) and clamping holes (3g) is equal to the number of segments when the device is dispersed and fixed.

3. The anti-drop anchor cable of claim 2, wherein: The clip hole (3g) is arranged near the pipe hole (3e), and the wire hole (3m) is arranged away from the pipe hole (3e).

4. The anti-drop anchor cable of claim 1, wherein: The first cover plate (3j) is also equipped with a protective head (3j1) on the side away from the new bearing plate (3f).

5. The anti-release anchor cable of claim 4, wherein: The first cover plate (3j) is also fixed with a threaded docking ring (3j2) on the side away from the new bearing plate (3f), and the protective head (3j1) is locked to the first cover plate (3j) through the threaded docking ring (3j2).

6. The anti-release anchor cable of claim 1, wherein: The slot (3i) is a threaded groove or a toothed groove.

7. The anti-release anchor cable of claim 4, wherein: The clip hole (3g), the placement groove (3l), and the protective head (3j1) are all filled with grease.

8. The anti-drop anchor cable of claim 1 or 7, wherein: A first sealing ring (3o) is also fitted between the new bearing plate (3f) and the first cover plate (3j).

9. The dispersion force type anti-drop anchor cable according to claim 8, characterized in that: The first sealing ring (3o) is arranged around the placement groove (3l).

10. The anti-drop anchor cable of claim 1 or 4 or 9, wherein: The new bearing plate (3f) is also locked with a second cover plate (3f2) on the side away from the first cover plate (3j). The second cover plate (3f2) is provided with a second through hole (3f3). The second through hole (3f3) is connected to the first through hole (3k). The clamping hole (3g) of the new bearing plate (3f) is provided with a sealing groove (3f1) at the junction with the second through hole (3f3). The sealing groove (3f1) is equipped with a second sealing ring (3f4).

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