Energy storage anchor cable and energy storage anchor cable support structure

Abstract

The utility model relates to a kind of energy storage anchor cable and energy storage anchor cable supporting structure. Energy storage anchor cable includes: cable body;Working spring, it is set on the cable body outer surface, the diameter of the working spring is greater than the diameter of the cable body, and the working spring is with pre-tensioned state two ends respectively fixed in the first end and the second end of the cable body;First fixed spring, it is set on the first end of the cable body, the diameter of the first fixed spring is matched with the diameter of the cable body, for the one end of the working spring is fixed in the cable body;Second fixed spring, it is set on the second end of the cable body, the diameter of the second fixed spring is matched with the diameter of the cable body, for the other end of the working spring is fixed in the cable body. The utility model can buffer and absorb surrounding rock load, actively share cable body load, to comprehensively improve the comprehensive stability of supporting system and the adaptability to complex geological conditions, reduce the safety hidden danger in coal mine roadway supporting.

Description

Technical Field

[0001] This utility model belongs to the field of engineering support technology, specifically relating to an energy storage anchor cable and an energy storage anchor cable support structure suitable for coal mine roadways. Background Technology

[0002] With the increasing depth of coal mining, roadways, as key passages for hoisting, transportation, and ventilation, are facing increasingly prominent issues related to surrounding rock deformation. Roadway support has become a core technical aspect of ensuring safe and efficient coal mining. Currently, the mainstream support technology for coal mine roadways is anchor cable support, which aims to improve the integrity and stability of the surrounding rock.

[0003] Traditional anchor cables mainly consist of steel strands, trays, and locking devices. Although they can provide high initial support resistance, they also have significant shortcomings: the elongation of the steel strands is low, and when the surrounding rock undergoes large deformation, the resulting strong external force can easily cause the steel strands to exceed their yield strength and break, leading to support failure; in addition, the lateral shear resistance of traditional anchor cables is generally weak, making it difficult to effectively resist the shear deformation of the surrounding rock, which can easily cause damage to the support structure, exacerbate roadway deformation, and create safety hazards.

[0004] To address the aforementioned issues, several improved anchor cables have been proposed. CN204283463U discloses a segmented anchor cable, which employs a segmented design, adding a highly elongated helical rod segment between the steel strand and the rod body. This segment can withstand most of the elongation caused by large deformations of the surrounding rock, thereby protecting the steel strand from breakage while maintaining sufficient support resistance. CN103924588A discloses an elastic anchor cable, which incorporates an elastic element. By setting a high-resistance elastic device in the free section of the cable, it absorbs the vibration energy generated by impact loads and adapts to large engineering deformations, maintaining its support function. However, existing improved solutions still have certain limitations. Both of these solutions focus on improving axial elongation, but their overall structural ability to cope with strong lateral shear deformation still has room for improvement. In actual deep tunnels under high stress and strong mining influence, the deformation of the surrounding rock often involves both large axial tension and significant lateral shear. This requires the support system to not only have good extended energy absorption characteristics, but also stronger overall shear resistance to maintain the integrity of the surrounding rock and the long-term stability of the tunnel. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, this utility model provides an energy storage anchor cable and an energy storage anchor cable support structure. This utility model can buffer and absorb the surrounding rock load through the energy storage structure composed of a first fixed spring, a working spring and a second fixed spring, actively share the cable load, prevent breakage due to overload, thereby comprehensively improving the overall stability of the support system and its adaptability to complex geological conditions, and reducing safety hazards in coal mine roadway support.

[0006] To achieve the above technical effects, this utility model provides an energy storage anchor cable, comprising:

[0007] A cable body having a first end that extends into the rock mass for anchoring and a second end that extends out of the rock mass for locking;

[0008] A working spring is sleeved on the outer surface of the cable body. The diameter of the working spring is larger than the diameter of the cable body. The working spring is fixed at both ends to the first and second ends of the cable body in a pre-stretched state so that it can undergo elastic deformation when subjected to force and apply axial preload to the cable body to resist the deformation of the surrounding rock.

[0009] A first fixing spring is sleeved on the first end of the cable body, and the diameter of the first fixing spring matches the diameter of the cable body, for fixing one end of the working spring to the cable body;

[0010] A second fixing spring is sleeved on the second end of the cable body. The diameter of the second fixing spring matches the diameter of the cable body, and is used to fix the other end of the working spring to the cable body.

[0011] In some embodiments, the first fixed spring is a frustum-shaped spring, with its larger diameter end matching and connected to the working spring, and its smaller diameter end matching and fixed to the first end of the cable body.

[0012] In some embodiments, the second fixing spring includes a frustum-shaped spring and a cylindrical spring that are integrally formed or separately connected. The larger diameter end of the frustum-shaped spring is matched with and connected to the working spring, and the smaller diameter end is connected and fixed to the cylindrical spring. The cylindrical spring is matched with and fixed to the second end of the cable body.

[0013] In some embodiments, the helical ring spacing of the first fixed spring and the second fixed spring is smaller than the helical ring spacing of the working spring.

[0014] In some embodiments, the starting point of the first fixed spring is welded and fixed to the cable body by a limiting member.

[0015] In some embodiments, the working spring, the first fixed spring, and the second fixed spring are all welded and fixed to each other.

[0016] This utility model also provides an energy-storing anchor cable support structure, including the energy-storing anchor cable in any of the above technical solutions, and:

[0017] A pad, wherein the pad is sleeved on the second fixed spring at the second end of the cable body;

[0018] A lock, wherein the lock is clamped to the second fixed spring at the second end of the cable and locked.

[0019] In some embodiments, the energy storage anchor cable support structure further includes a guide head connector, which has a cavity for fitting onto the first end of the cable body, and has multiple sets of buckles evenly arranged circumferentially on the side near the first fixing spring to fix the first fixing spring.

[0020] In some embodiments, the energy storage anchor cable support structure further includes a spiral steel strip sleeved on the outer surface of the cable body, and the spiral steel strip is at least welded and fixed between the spiral rings of the working spring.

[0021] In some embodiments, the energy storage anchor cable support structure further includes a corrosion-resistant sleeve, which is sleeved on the outer surface of the cable body; the corrosion-resistant sleeve is provided with an external thread adapted to the second fixing spring, and the second fixing spring is sleeved on the external thread of the corrosion-resistant sleeve.

[0022] The advantages of this utility model over the prior art are:

[0023] 1. Achieving active and continuous pre-tensioning support to effectively control surrounding rock deformation: This invention utilizes the axial pre-tensioning of the working spring during installation to apply axial pre-tensioning force to the cable body, forming an active support system. When the surrounding rock deforms, the working spring stretches, continuously releasing the stored elastic potential energy to provide dynamic support reaction force to the surrounding rock, thereby significantly suppressing surrounding rock deformation and avoiding premature failure of traditional anchor cables due to large deformation of the surrounding rock.

[0024] 2. Significantly improves the overall tensile and shear resistance of the support system: During operation, the working springs can share the axial force on the cable, reducing the peak stress of the cable and decreasing the risk of breakage. Simultaneously, the spiral steel strips positioned between the spiral rings of the working springs form a continuous covering structure with radial overlap and axial offset between adjacent rings. This maintains shear continuity even under tension of the working springs, significantly enhancing the lateral shear resistance of the support structure under complex stress environments.

[0025] 3. High structural durability, suitable for long-term support scenarios: The entire cable body is covered with stainless steel anti-corrosion sleeves, combined with end welding sealing treatment, effectively isolating corrosive media; each spring and spiral steel strip is fixed by a combination of welding and mechanical cooperation, making the overall structure robust and reliable. This design significantly improves the service life of the support structure under harsh geological conditions such as moisture and corrosion, making it suitable for long-term support projects.

[0026] 4. Clear synergistic effect of each component and clear and reliable force transmission path: The multi-segment spring combination design, the working spring is responsible for energy storage and deformation, the fixed springs at both ends provide high rigidity connection, and with the buckle constraint of the guide head connector and the threaded locking of the lock, a stable force transmission mechanism is formed from the surrounding rock to the cable body, ensuring that the structure does not slip or loosen under long-term dynamic load, and the overall coordination is good.

[0027] 5. Easy installation and easy control of pre-tensioning effect: Components such as the working spring are prefabricated in the factory. On-site, only stretching and fixing them to both ends of the cable body is required to apply the pre-tensioning force. By adjusting the stretching amount of the working spring, the initial pre-tensioning force can be flexibly controlled to adapt to the design requirements of different surrounding rock conditions. The construction operation is simple and the quality is controllable. Attached Figure Description

[0028] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0029] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0030] Figure 1 This is a schematic diagram of an energy storage anchor cable support structure provided in an embodiment of the present utility model;

[0031] Figure 2 A schematic diagram of an energy storage anchor cable support structure (spring not shown) provided for an embodiment of this utility model;

[0032] Figure 3 This is a schematic diagram of the exposed end structure of the anchor cable provided in an embodiment of the present utility model;

[0033] Figure 4 This is a schematic diagram of the guide head connector structure provided in an embodiment of the present utility model;

[0034] Figure 5 This is a schematic diagram of the spiral steel strip structure provided in the embodiment of the present utility model, wherein (a) is a schematic diagram of the positional relationship between a single spiral ring and the spiral steel strip, and (b) is a schematic diagram of the positional relationship between adjacent spiral rings and the spiral steel strip;

[0035] Figure 6 This is a schematic diagram of the working of the spiral steel strip provided in the embodiment of the present utility model, wherein (a) is a schematic diagram of the position of the spiral steel strip under tension, and (b) is a schematic diagram of the position of the spiral steel strip under no force or under compression.

[0036] Marked in the image:

[0037] 1-Cable body; 201-First fixed spring; 202-Working spring; 203-Second fixed spring; 204-Limiting component; 3-Guide head connector; 301-Snap buckle; 401-Pad; 402-Lock; 5-Spiral steel belt.

[0038] The same or corresponding marks in the diagram indicate the same or corresponding parts. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Here, the illustrative embodiments of this utility model and their descriptions are used to explain this utility model, but are not intended to limit this utility model.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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 or an electrical connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] It should be understood that the terms "comprising / including," "consisting of," or any other variations are intended to cover non-exclusive inclusion, such that a product, apparatus, process, or method that comprises a list of elements includes not only those elements but may also include, where necessary, other elements not expressly listed, or elements inherent to such a product, apparatus, process, or method. Without further limitations, an element defined by the phrases "comprising / including," "consisting of," does not exclude the presence of additional identical elements in the product, apparatus, process, or method that includes that element.

[0042] It should also be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", and "outer" 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, component or structure referred to must have a specific orientation, be constructed or operated in a specific orientation, and should not be construed as a limitation on this utility model.

[0043] 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 one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] Reference Figure 1 , Figure 2 To achieve the above technical solution, this utility model provides an energy-storing anchor cable, which includes a cable body 1, a working spring 202, a first fixing spring 201, and a second fixing spring 203. The cable body 1 has a first end that extends into the rock mass for anchoring and a second end that extends out of the rock mass for locking. The working spring 202 is sleeved on the outer surface of the cable body 1, and its diameter is larger than that of the cable body 1. The working spring 202 is pre-stretched and its two ends are fixed to the first and second ends of the cable body 1, respectively, so that it can elastically deform under stress and apply axial pre-tension to the cable body 1 to resist deformation of the surrounding rock. The first fixing spring 201 is sleeved on the first end of the cable body 1, and its diameter matches that of the cable body 1, used to fix one end of the working spring 202 to the cable body 1. The second fixing spring 203 is sleeved on the second end of the cable body 1, and its diameter matches that of the cable body 1, used to fix the other end of the working spring 202 to the cable body 1.

[0045] Specifically, the first fixed spring 201, the working spring 202, and the second fixed spring 203 are all made of spring wire with the same cross-sectional stiffness, but their diameters and the spacing between the spiral rings are different.

[0046] The first fixed spring 201 is a frustum-shaped spring. Its large-diameter end is matched with and connected to the working spring 202, and its small-diameter end is matched with and fixed to the first end of the cable body 1.

[0047] The second fixed spring 203 includes a frustum-shaped spring and a cylindrical spring that are integrally formed or separately connected. The large-diameter end of the frustum-shaped spring is matched with and connected to the working spring 202, and the small-diameter end is connected and fixed to the cylindrical spring. The cylindrical spring is matched with and fixed to the second end of the cable body 1.

[0048] The helical ring spacing of the first fixed spring 201 and the second fixed spring 203 is smaller than the helical ring spacing of the working spring 202.

[0049] The working spring 202 has a diameter larger than the cable body 1. The small diameter ends of the first fixed spring 201 and the second fixed spring 203 are both adapted to the cable body 1. When the working spring 202 is stretched, there is a certain gap between the spiral ring of the working spring 202 section and the cable body 1. In the corresponding sections of the first fixed spring 201 and the second fixed spring 203, the gap between the spiral ring and the cable body 1 gradually decreases under the transition effect of the frustum structure. At the small diameter ends of the first fixed spring 201 and the second fixed spring 203, the spiral ring tightly grips the cable body 1. In this way, the preload of the working spring 202 is effectively transmitted to the cable body 1 through the first fixed spring 201 and the second fixed spring 203.

[0050] The spacing between the spiral rings of the working spring 202 is greater than that between the first fixed spring 201 and the second fixed spring 203. This gives the working spring 202 a higher deformation capacity and energy storage capacity. It is easy to understand that the spacing between the spiral rings is inversely proportional to the overall stiffness of the spring. According to Hooke's Law, the smaller the spacing between the spiral rings, the greater the overall stiffness of the spring, and the smaller the deformation of the spring under a fixed axial force. Conversely, the larger the spacing between the spiral rings, the smaller the overall stiffness of the spring, and the greater the deformation of the spring under a fixed axial force. Thus, under axial force, the first fixed spring 201 and the second fixed spring 203 exhibit the smallest deformation, and the least energy is dissipated through deformation. The working spring 202, however, dissipates the vast majority of its energy through a larger deformation, effectively buffering the deformation of the surrounding rock.

[0051] Reference Figure 3 In this embodiment, the second fixing spring 203 is a composite structure composed of a frustum-shaped spring and a cylindrical spring. These two springs can be integrally formed or welded together. The frustum-shaped spring transitions the spring from a large diameter to a small diameter that matches the cable body 1, while the cylindrical spring not only fits tightly into the cable body 1 but also facilitates locking by the lock 402 during installation. In this embodiment, the second fixing spring 203 is constructed by welding two spring sections together, which facilitates manufacturing and on-site installation.

[0052] Reference Figure 4In this embodiment, the starting point of the first fixed spring 201 is welded and fixed to the cable body 1 by a limiting member 204. The limiting member 204 can be a vertical rod or a ball or other structures with limiting function. The limiting member 204 can effectively prevent the spring from axially disengaging significantly during the force process.

[0053] Continue to refer to Figures 1 to 4 This utility model also provides an energy-storing anchor cable support structure, including the energy-storing anchor cable in any of the above embodiments, as well as a pad 401 and a lock 402. The pad 401 is sleeved on the second end of the cable body 1 onto the second fixing spring 203, and the lock 402 clamps and locks the second end of the cable body 1 onto the second fixing spring 203. Specifically, the first surface of the pad 401 is in close contact with the rock wall, and the second surface has a pressure-bearing hemispherical structure with a hollow hole in the middle for the cable body 1 and the second fixing spring 203 wound around the outer layer of the cable body 1 to pass through. The inner surface of the lock 402 has an internal thread adapted to the cylindrical spring of the second fixing spring 203, and engages and locks with the cylindrical spring of the second fixing spring 203.

[0054] Reference Figure 4 This embodiment also includes a guide head connector 3. The guide head connector 3 has an internal cavity for fitting onto the first end of the cable body 1. Multiple sets of buckles 301 are evenly arranged circumferentially on the side of the guide head connector 3 near the first fixing spring 201 to fix the first fixing spring. In this embodiment, the buckles 301 are semi-circular buckles, with four buckles 301 evenly distributed circumferentially on the inner surface of the guide head connector 3 near the cable body 1. The first spiral ring of the first end of the first fixing spring 201 passes through the four buckles 301 in sequence, thus confining the first fixing spring 201 within the four buckles 301. Preferably, the spiral ring at the smaller diameter end of the first fixing spring 201 is welded and fixed to the corresponding buckle 301.

[0055] Reference Figure 5 , Figure 6 To improve the shear resistance of the energy storage anchor cable support structure, this embodiment also includes a spiral steel strip 5, which is sleeved on the outer surface of the cable body 1 and welded at least between the spiral rings of the working spring 202. More specifically, as Figure 5 As shown in (a) of the figure, in this embodiment, the spiral steel strip 5 is welded to the inner surface of the working spring 202 and the first fixed spring 201, as follows: Figure 5 As shown in (b), the steel plates on opposite sides of two adjacent spiral rings are tightly fitted radially and staggered axially by a predetermined width. In this embodiment, the predetermined width is 1 / 8 times the width of the spiral steel strip 5. (Refer to...) Figure 6In (a) and (b), when the working spring 202 is stretched, the spiral steel strip 5 is also stretched synchronously, and the radius of the spiral steel strip 5 is also reduced synchronously. In this way, the spiral steel strip 5 tightly wraps the cable body 1. Furthermore, due to the pressing and limiting effect of the small diameter end of the first fixed spring 201 on its corresponding section of the spiral steel strip 5, the working spring 202 can always keep the spiral steel strip 5 without gaps during the stretching process. The working spring 202 can ensure the shear resistance of the anchor cable while having a large pre-stretching space.

[0056] Furthermore, this embodiment also includes an anti-corrosion sleeve (not shown in the figure), which is sleeved along the entire length of the outer surface of the cable body 1. The anti-corrosion sleeve has an external thread that is adapted to the second fixing spring 203, and the second fixing spring 203 is sleeved on the external thread of the anti-corrosion sleeve. In this embodiment, the anti-corrosion sleeve is a stainless steel anti-corrosion sleeve, and the end of the anti-corrosion sleeve is inserted into and welded to the internal cavity of the guide head connector 3, providing a fixing space for the first fixing spring 201 on the outer layer.

[0057] The anti-corrosion sleeve corresponding to the section covered by the lock 402 is thickened, and the outer surface of the thickened section is threaded. The cylindrical spring of the second fixing spring 203 is tightly wound in the external thread of the thickened section of the anti-corrosion sleeve. The lock 402 engages with the external thread of the anti-corrosion sleeve through its internal thread, thereby axially pressing and fixing the second fixing spring 203 located between the two, preventing the spring from slipping during use.

[0058] The implementation principle of this utility model is as follows:

[0059] The energy storage anchor cable support structure provided by this utility model consists of, from the inside out, cable body 1, anti-corrosion sleeve, spiral steel strip 5, and working spring 202 (first fixed spring 201 / second fixed spring 203).

[0060] According to the design drawings, components such as cable body 1, each spring segment, guide head connector 3, pad 401, lock 402, and spiral steel strip 5 are processed in the factory. Among them, the cable body 1 is covered with an anti-corrosion sleeve; the spiral steel strip 5 is welded to the inner surface of the working spring 202 and the first fixed spring 201, and the first fixed spring 201, the working spring 202, and the second fixed spring 203 are welded in sequence to form a complete spring layer.

[0061] Insert the first end of the cable body 1 into the internal cavity of the guide head connector 3 and seal it with welding. Slide the assembled spring and spiral steel strip 5 onto the cable body, ensuring the first fixing spring 201 with the spiral steel strip 5 faces the first end of the cable body 1. Pass the spiral ring at the starting end of the first fixing spring 201 sequentially through the four semi-annular buckles 301 on the guide head connector 3, weld them directly, and then further weld the limiting member 204 to complete the axial fixation of the first fixing spring 201. Subsequently, stretch the working spring 202 along the axial direction of the cable body 1 to a pre-tensioned state.

[0062] With the working spring 202 in a pre-stretched state, the second fixing spring 203 is tightly wound into the external thread of the thickened anti-corrosion sleeve section at the second end of the cable body 1.

[0063] The assembled structure is inserted into the pre-drilled anchor holes in the surrounding rock of the tunnel. The pad 401 is fitted onto the second end of the cable body, so that one side is tightly against the rock wall. Then the locking device 402 is installed, so that the energy storage structure composed of the first fixing spring 201, the working spring 202, and the second fixing spring 203 is firmly fixed to the cable body 1, and the entire energy storage anchor cable is firmly fixed in the surrounding rock of the tunnel.

[0064] This invention achieves continuous and stable support under conditions of large deformation and strong shear in surrounding rock through the synergistic action of various springs, spiral steel strip 5, guide head connector 3, pad 401, and lock 402. Its core principle lies in using the pre-tensioned working spring 202 to absorb the deformation energy of the surrounding rock, while simultaneously enhancing the lateral shear resistance of the structure with the help of the spiral steel strip 5, and ensuring the overall coordination and durability of the work through a reliable end-fixing mechanism.

[0065] Specifically, during installation, the working spring 202 is axially stretched when its natural length is less than that of the cable body 1, and is fixed to the first and second ends of the cable body 1 by the first fixed spring 201 and the second fixed spring 203, respectively, thereby applying a continuous axial preload to the cable body 1. The working spring 202, with its largest helical ring spacing and smallest stiffness, becomes the main deformation and energy storage unit; the first fixed spring 201 and the second fixed spring 203, with their smallest helical ring spacing and largest stiffness, mainly undertake the connection and force transmission functions. When the surrounding rock deforms and exerts pressure on the cable body 1, the working spring 202 can further elastically elongate, releasing the pre-stored elastic potential energy and continuously providing support reaction force, thereby preventing the cable body 1 from breaking due to overload.

[0066] To improve the stability of the support structure under lateral shear, a spiral steel strip 5 is welded between the spiral rings of the working spring 202 and the first fixed spring 201. The spiral steel strip 5 is closely overlapped between adjacent spiral rings and is axially staggered, so that it can maintain continuous coverage even when the spring is under tension, and firmly hold the cable body 1, effectively enhancing the local shear stiffness of the cable body 1 and suppressing the adverse effects of surrounding rock shear deformation on the anchor cable.

[0067] For fixation, the guide head connector 3 is welded and sealed to the cable body 1 and the anti-corrosion sleeve through its internal cavity, and the first fixing spring 201 is constrained by circumferentially distributed buckles 301 to prevent axial slippage of the spring; the lock 402 engages with the external thread of the thickened section of the anti-corrosion sleeve of the cable body 1 through its internal thread, axially pressing and fixing the second fixing spring 203 located between the two, thereby achieving reliable anchoring of the other end of the spring. This dual fixing mechanism not only ensures the effective application of preload during installation, but also ensures that all components work together under force during use, preventing overall slippage or loosening.

[0068] It will be readily understood by those skilled in the art that, without conflict, the above-mentioned preferred solutions can be freely combined and superimposed.

[0069] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An energy storage anchor cable, characterized in that, The energy-storage anchor cable includes: A cable body having a first end that extends into the rock mass for anchoring and a second end that extends out of the rock mass for locking; A working spring is sleeved on the outer surface of the cable body. The diameter of the working spring is larger than the diameter of the cable body. The working spring is fixed at both ends to the first and second ends of the cable body in a pre-stretched state so that it can undergo elastic deformation when subjected to force and apply axial preload to the cable body to resist the deformation of the surrounding rock. A first fixing spring is sleeved on the first end of the cable body, and the diameter of the first fixing spring matches the diameter of the cable body, for fixing one end of the working spring to the cable body; A second fixing spring is sleeved on the second end of the cable body. The diameter of the second fixing spring matches the diameter of the cable body, and is used to fix the other end of the working spring to the cable body.

2. The energy storage anchor cable according to claim 1, characterized in that, The first fixed spring is a frustum-shaped spring. The larger diameter end of the frustum-shaped spring is matched with and connected to the working spring, and the smaller diameter end is matched with and fixed to the first end of the cable body.

3. The energy storage anchor cable according to claim 1, characterized in that, The second fixed spring includes a frustum-shaped spring and a cylindrical spring that are integrally formed or separately connected. The larger diameter end of the frustum-shaped spring is matched with and connected to the working spring, and the smaller diameter end is connected and fixed to the cylindrical spring. The cylindrical spring is matched with and fixed to the second end of the cable body.

4. The energy storage anchor cable according to any one of claims 1-3, characterized in that, The helical ring spacing of the first fixed spring and the second fixed spring is smaller than the helical ring spacing of the working spring.

5. The energy storage anchor cable according to any one of claims 1-3, characterized in that, The starting point of the first fixed spring is welded and fixed to the cable body by a limiting member.

6. The energy storage anchor cable according to any one of claims 1-3, characterized in that, The working spring, the first fixed spring, and the second fixed spring are all welded and fixed to each other.

7. An energy storage anchor cable support structure, characterized in that, The energy-storage anchor cable support structure includes: Energy storage anchor cable according to any one of claims 1-6; and A pad, wherein the pad is sleeved on the second fixed spring at the second end of the cable body; A lock, wherein the lock is clamped to the second fixed spring at the second end of the cable and locked.

8. The energy storage anchor cable support structure according to claim 7, characterized in that, The energy storage anchor cable support structure also includes a guide head connector, which has a cavity for fitting onto the first end of the cable body, and the guide head connector is provided with multiple sets of buckles evenly arranged circumferentially on the side near the first fixed spring to fix the first fixed spring.

9. The energy storage anchor cable support structure according to claim 7, characterized in that, The energy storage anchor cable support structure also includes a spiral steel strip, which is sleeved on the outer surface of the cable body and is at least welded and fixed between the spiral rings of the working spring.

10. The energy storage anchor cable support structure according to claim 7, characterized in that, The energy storage anchor cable support structure also includes a corrosion-resistant sleeve, which is sleeved on the outer surface of the cable body; the corrosion-resistant sleeve is provided with an external thread adapted to the second fixing spring, and the second fixing spring is sleeved on the external thread of the corrosion-resistant sleeve.

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