A hexagonal space rope net with closing end and weaving method thereof

Abstract

A retractable hexagonal space rope net and its weaving method relate to the field of tools for space use. The retractable hexagonal space rope net comprises a regular hexagonal bottom frame rope and inner frame rope, three reinforcing ropes, six traction ropes, a mooring rope, six closing ropes, and closing rope rings connected to the bottom frame rope at intervals. The three reinforcing ropes are connected at the middle to form the center of the space rope net. The ends of each reinforcing rope are connected to the two vertices of the inner frame rope and the two vertices of the bottom frame rope, respectively. The inner frame rope and the reinforcing ropes enclose six equilateral triangle areas with dense mesh. The bottom frame rope, the inner frame rope, and the reinforcing ropes enclose six equilateral trapezoidal areas with sparse mesh. The six closing ropes pass through the closing rope rings connected to the six sides of the bottom frame rope. The ends of each reinforcing rope are connected to a traction rope, and the mooring ropes are connected to the center of the space rope net. The retractable hexagonal space rope net and its weaving method can keep the space ropes in an orderly manner and can be towed.

Description

Technical Field

[0001] The present application relates to the field of tools for outer space, and in particular to a hexagonal space rope net with a closeable end and a weaving method thereof. Background Art

[0002] A space net is a flexible mesh-like tool used for space capture. It boasts excellent adaptability and high safety. This is because the flexible payload, in the form of a net, does not need to be aligned with a specific capture location, but rather captures objects across a wide area. This allows for high error margins and is insensitive to collisions and shocks. Mild collisions and shocks do not cause widespread instability in the system, making it particularly well-suited for capturing and removing space debris. Furthermore, space nets are suitable for large-scale debris targets in high, medium, and low orbits. Due to their high operability, relatively mature technology, and ease of engineering implementation, they are currently the preferred approach for space debris removal.

[0003] The space rope net uses a specific weaving method to connect flexible ropes into a single entity, connecting them point to surface. Under the traction of a launcher, it uses point-to-surface and surface-to-body methods to achieve collision, coverage, and wrapping between the capture system and the captured target, thereby flexibly capturing or recovering the captured target. The primary function of the space rope net is to cover and wrap the captured target. Therefore, the design process must consider the structural shape and size of the rope, the performance parameters of the rope, and the adaptability to the space environment (vacuum, high and low temperature, ultraviolet radiation resistance, etc.) based on the characteristics of the captured target.

[0004] The invention patent with authorization announcement number CN104790119B discloses a hexagonal space capture rope net and its weaving method, which has the following shortcomings and deficiencies: it does not involve the closing of the rope net, and the rope net mouth cannot be closed after the rope net captures the target; it does not involve the mooring rope of the rope net, and the rope net-target object combination cannot be operated after the rope net captures the target; there is only one pulling rope, which is easy to be unstable in the process of pulling out and unfolding the rope net, deviate from the original direction and is difficult to unfold into a surface.

[0005] The invention patent with authorization announcement number CN109747871B discloses a spatial rope net and a manufacturing method, which has the following shortcomings and deficiencies: it does not involve the pre-treatment operation of breaking the knots and twisting of the net rope material, and the untreated net rope is directly woven into a net, which is prone to rotation and twisting, causing the rope net to be uneven and tangled; the mooring rope of the rope net in this invention is set at the inner ring rope on one side, not at the center of the rope net. During the dragging process off the track, it is easy to be subjected to uneven force, causing stress concentration.

[0006] Therefore, a space rope net with convenient position adjustment is needed to achieve the dragging and derailment after capturing the target to meet the use requirements. Summary of the Invention

[0007] The purpose of this application is to provide a hexagonal space rope net with a retractable opening and a weaving method, which can maintain the orderly storage of the space net rope and excellent deployment performance. After capturing the mission target, the rope net opening can be retracted and locked and the dragging operation can be performed.

[0008] This application is implemented as follows:

[0009] The present application provides a hexagonal space rope net that can be closed, which includes a regular hexagonal bottom frame rope, a regular hexagonal inner frame rope arranged on the inner side of the bottom frame rope, three reinforcing ropes, six traction ropes, a mooring rope, six closing ropes and a plurality of closing rope rings connected to the bottom frame rope at intervals; the middle parts of the three reinforcing ropes are interconnected to form the center of the space rope net, the two ends of each reinforcing rope are respectively connected to the two vertices of the inner frame rope and then connected to the two vertices of the bottom frame rope in sequence, the inner frame rope and the reinforcing ropes together form six equilateral triangle areas with dense mesh purposes, and the bottom frame rope, the inner frame rope and the reinforcing ropes together form six equilateral trapezoidal areas with sparse mesh purposes; the six closing ropes respectively pass through the closing rope rings connected to the six sides of the bottom frame rope, the two ends of each reinforcing rope are respectively connected to a traction rope, and the mooring rope is connected to the center of the space rope net.

[0010] In some optional embodiments, the middle parts of the three reinforcing ropes are connected together by serration using aramid III wire.

[0011] In some optional embodiments, each side of the bottom border string is parallel to each side of the inner border string.

[0012] The present application also provides a method for weaving the above-mentioned hexagonal space rope net with closing ends, comprising the following steps:

[0013] Cut three reinforcing ropes of equal length, align the twist, connect and fix the middle parts of the three reinforcing ropes and arrange them in a * shape;

[0014] Arrange the inner frame ropes into a regular hexagon, and connect the two ends of the three reinforcing ropes to the corresponding vertices of the regular hexagon of the inner frame ropes using the ordinary knot-sewing method;

[0015] Arrange the bottom frame ropes into a regular hexagon, connect the two ends of the three reinforcing ropes to the corresponding vertices of the regular hexagon of the bottom frame ropes using the ordinary knot-sewing method, and extend the remaining rope ends at both ends of the three reinforcing ropes as traction ropes;

[0016] Connect the closing rope rings to the bottom frame rope at intervals;

[0017] After twisting the mooring rope, wrap one end of the rope around the center of the three reinforcing ropes to connect and secure;

[0018] After untwisting the mesh braided material, knot it from the inside out at the center of the three reinforcing ropes to form a diamond-shaped dense mesh;

[0019] After untwisting the selected mesh weaving material, tie knots from the inside to the outside on each side of the inner frame rope to form a diamond-shaped mesh;

[0020] Untwist the closing rope and pass it through the corresponding closing rope rings connected to each side of the bottom frame rope.

[0021] In some optional embodiments, the ordinary knot fixation method is: tie the two ends of the second braided rope into an ordinary knot, straighten the first braided rope and pass it through the cavity formed by the knot of the second braided rope, then tighten the two ends of the second braided rope, use a double-strand aramid III hand needle to pass through the first braided rope and the second braided rope, and complete the knot fixation after sewing 2-3 stitches.

[0022] In some optional implementation schemes, the inner frame rope and the bottom frame rope are twisted separately, and the two rope ends are overlapped and serrated to form a loop and then arranged into a regular hexagon.

[0023] The beneficial effects of the present application are as follows: the hexagonal space rope net with a closeable end provided in the present application includes a regular hexagonal bottom frame rope, a regular hexagonal inner frame rope arranged on the inner side of the bottom frame rope, three reinforcing ropes, six traction ropes, a mooring rope, six closing ropes and a plurality of closing rope rings connected to the bottom frame rope at intervals; the middle parts of the three reinforcing ropes are interconnected to form the center of the space rope net, and the two ends of each reinforcing rope are respectively connected to the two vertices of the inner frame rope and then connected to the two vertices of the bottom frame rope in turn, the inner frame rope and the reinforcing ropes enclose six equilateral triangle areas with dense mesh purposes, and the bottom frame rope, the inner frame rope and the reinforcing ropes enclose six equilateral trapezoidal areas with sparse mesh purposes; the six closing ropes respectively pass through the closing rope rings connected to the six sides of the bottom frame rope, the two ends of each reinforcing rope are respectively connected to a traction rope, and the mooring rope is connected to the center of the space rope net. The retractable hexagonal space rope net and weaving method provided in this application can maintain the orderly storage of the space net rope and excellent deployment performance. After capturing the mission target, the rope net mouth is retracted and locked and the dragging operation can be performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 A schematic structural diagram of a retractable hexagonal space rope net provided in an embodiment of the present application;

[0026] Figure 2A schematic flow chart of a method for weaving a retractable hexagonal space rope net provided in an embodiment of the present application;

[0027] Figure 3 A schematic diagram of the zigzag connection method at the center point of the reinforcing rope in the method for weaving a retractable hexagonal space rope net provided in an embodiment of the present application;

[0028] Figure 4 A schematic diagram of the structure of the connection between the bottom frame rope, the inner frame rope and the reinforcement rope in the method for weaving a retractable hexagonal space rope net provided in an embodiment of the present application;

[0029] Figure 5 A schematic diagram of the zigzag connection between the mooring rope and the reinforcing rope at the center in the method for weaving a retractable hexagonal space rope net provided in an embodiment of the present application;

[0030] Figure 6 A schematic diagram of a conventional knot-and-seam dead-fixing method in a method for weaving a retractable hexagonal space rope net provided in an embodiment of the present application;

[0031] Figure 7 A schematic diagram of manufacturing closing rope rings in the method for weaving a closing hexagonal space rope net provided in an embodiment of the present application;

[0032] Figure 8 A schematic diagram of a closing rope passing through a closing rope ring in a method for weaving a closeable hexagonal space rope net provided in an embodiment of the present application.

[0033] In the figure: 100, bottom frame rope; 110, inner frame rope; 120, reinforcement rope; 130, traction rope; 140, mooring rope; 150, closing rope; 160, closing rope ring; 170, dense mesh; 180, sparse mesh. DETAILED DESCRIPTION

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0037] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended only to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0038] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0039] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0040] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0041] The features and performance of the retractable hexagonal space rope net and its weaving method of the present application are further described in detail below in conjunction with the embodiments.

[0042] like Figure 1As shown, the embodiment of the present application provides a hexagonal space rope net that can be closed, which includes a regular hexagonal bottom frame rope 100, a regular hexagonal inner frame rope 110 arranged on the inner side of the bottom frame rope 100, three reinforcing ropes 120, six traction ropes 130, a mooring rope 140, six closing ropes 150 and 150 closing rope rings 160 connected to the bottom frame rope 100 at intervals; each side of the bottom frame rope 100 is parallel to each side of the inner frame rope 110, and the middle parts of the three reinforcing ropes 120 are serrated with aramid III wire to form the center of the space rope net. The two ends of each reinforcing rope 120 are respectively connected to the two vertices of the inner frame rope 110. The two vertices of the bottom frame rope 100 are connected to form the overall framework of the space rope net, the inner frame rope 110 and the reinforcement ropes 120 enclose six equilateral triangle areas with dense meshes 170, and the bottom frame rope 100, the inner frame rope 110 and the reinforcement ropes 120 enclose six equilateral trapezoidal areas with sparse meshes 180; six closing ropes 150 respectively pass through the closing rope rings 160 connected to the six sides of the bottom frame rope 100, each of the two ends of each reinforcement rope 120 is connected to a traction rope 130, the mooring rope 140 is connected to the center of the space rope net, and each side of the bottom frame rope 100 is connected to 25 closing rope rings 160 arranged at intervals.

[0043] Space rope nets are used in the field of space debris mitigation technology. Materials used should be high-temperature, low-temperature, and UV-resistant polymer textile fibers, such as aramid III, polyimide, and high-strength polyethylene, that are adaptable to the space environment. Taking into account factors such as overall weight and strength, in this embodiment, the bottom frame rope 100, inner frame rope 110, reinforcement rope 120, traction rope 130, closing rope ring 160, and mooring rope 140 form the load-bearing framework of the space rope net. Aramid III rope with a diameter of 2mm is used. The dense mesh 170 and open mesh 180 of the main structure of the rope net are made of aramid III rope with a diameter of 0.5mm. The closing rope 150 is made of polyimide rope with a diameter of 1mm.

[0044] Each side of the plane regular hexagon surrounded by the bottom frame rope 100 is parallel to each side of the plane regular hexagon surrounded by the inner frame rope 110. The three reinforcing ropes 120 are distributed in an * shape, and the two ends of the reinforcing rope 120 are respectively connected to the two corresponding vertices of the plane regular hexagon surrounded by the inner frame rope 110 and the two corresponding vertices of the plane regular hexagon surrounded by the bottom frame rope 100 and extend to form two traction ropes 130. The diamond-shaped dense mesh 170 is arranged radially from the center of the mesh to the inner frame rope 110, and finally forms a circle of equilateral triangles with the inner frame rope 110; the diamond-shaped sparse mesh 180 is arranged radially from the inner frame rope 110 to the bottom frame rope 100, and finally forms a circle of equilateral triangles with the bottom frame rope 100. The reinforcing rope 120 and the inner frame rope 110 and the bottom frame rope 100 are all connected as follows. Figure 6The connection method of the ordinary knot and dead fixation method shown can ensure the stability of the entire frame of the space rope net.

[0045] like Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 As shown, the present application also provides a method for weaving the above-mentioned hexagonal space rope net with closing end, comprising the following steps:

[0046] Step 1: Cut three reinforcing ropes 120 with a length of 24000 mm, align the reinforcing ropes 120 by twisting them, serrate the middle parts of the three reinforcing ropes 120 in pairs, and then arrange them in an * shape to form the center of the net;

[0047] Step 2: Cut the inner frame rope 110 of 19310mm in length, make six equal points on the inner frame rope 110, break the twist of the inner frame rope 110, overlap the two rope ends and zigzag to form a loop and then arrange it into a regular hexagon, cut the bottom frame rope 100 of 60110mm in length, make six equal points on the bottom frame rope 100, break the twist of the bottom frame rope 100, overlap the two rope ends and zigzag to form a loop and then arrange it into a regular hexagon, and connect the three reinforcing ropes 120 at 3200mm at both ends from the center of the mesh body. , 10000mm are respectively connected with the six equally divided process points of the corresponding inner frame rope 110 and the bottom frame rope 100 through the ordinary knotting and fixing method to form the inner frame rope 110 and the bottom frame rope 100 of a regular hexagon; the ordinary knotting and fixing method is: wrap the two ends of the second braided rope with an ordinary knot, straighten the first braided rope and pass it through the cavity formed by the knotting of the second braided rope, and then tighten the two ends of the second braided rope, use a double-strand aramid III hand needle to pass through the first braided rope and the second braided rope, and complete the knotting and fixing after sewing 2-3 stitches.

[0048] Step 3: Starting from the knot of the bottom frame rope 100 and the reinforcement rope 120, sew a closing rope ring 160 on the bottom frame rope 100 at intervals of 400 mm, for a total of 150 closing rope rings 160;

[0049] Step 4: Cut a 30,000 mm long mooring rope 140, twist it, and pass one end of the rope around the center of the three reinforcing ropes 120, and then use aramid III thread to serrate and secure them.

[0050] Step 5: Select a sufficient number of mesh weaving materials, untwist them first, and then tie knots from the center of the frame from the inside to the outside to form a diamond-shaped dense mesh 170 with a length of 400 mm until the inner frame rope 110. The dense mesh 170 is woven.

[0051] Step 6: Select a sufficient number of mesh weaving materials and untwist them first. Then tie knots from the inner frame rope 110 from the inside to the outside to form a diamond-shaped sparse mesh 180 with a length of 800 mm until the bottom frame rope 100. The sparse mesh 180 is woven.

[0052] Step 7: Select six 14000mm long closing ropes 150 for untwisting, and then pass the closing ropes 150 through the closing rope rings 160 on the bottom frame ropes 100 in sequence, thus completing the production of the space rope net. Figure 1 shown.

[0053] The hexagonal space rope net that can be closed and its weaving method provided by the embodiment of the present application utilizes three *-shaped reinforcement ropes 120 to form the center of the net body, which are respectively connected to the bottom border rope 100 of the regular hexagon and the vertices of the inner border rope 110 of the regular hexagon arranged on the inner side of the bottom border rope 100 to form an overall space rope net structure. Closing rope rings 160 are separately introduced on the bottom border rope 100 of the space rope net. These closing rope rings 160 not only do not slide but also remain in the same direction. The closing rope 150 inserted into the closing rope rings 160 can remain relatively parallel to the bottom border rope 100, reducing the entanglement between the bottom border rope 100 and the closing rope 150, making the closing rope 150 smoother during the closing action and reducing the wear with the bottom border rope 100; in order to improve the stability of the space rope net during the towing process, reduce the stress concentration that causes the large strength loss of the unilateral inner circle rope, etc., a zigzag connection is used. The center of the rope net is made by connecting three reinforcing ropes 120, and a mooring rope 140 is connected to the center of the three reinforcing ropes 120. After the space rope net completes the capture, the space rope net assembly can be evenly dragged and other related operations through the mooring rope 140. In order to reduce the weight of the rope net to the greatest extent, combined with the stress conditions of the rope net, the rope net force frame uses aramid III ropes with larger diameter and greater strength, and the rope net body uses aramid III ropes with smaller diameter and lower strength, thereby reducing the total weight of the rope net. A special weaving method combining dense mesh and sparse mesh of specific sizes is provided in the equilateral triangle area enclosed by the inner frame rope 110 and the reinforcing ropes 120 and the equilateral trapezoidal area enclosed by the bottom frame rope 100, the inner frame rope 110 and the reinforcing ropes 120, respectively, to provide good contact and winding performance between the rope net and the captured target, thereby increasing the capture success rate of the space rope net. In each step of the production process of the space rope net, the braided rope is first untwisted to make the woven rope net smoother, easier to organize and store, and less likely to twist and tangle;

[0054] The closeable hexagonal space rope net and its weaving method provided in the embodiment of the present application have the advantages of complete composition, perfect functions and more optimized structural layout compared with the existing technology. The rope net weaving method is operational, the rope net is lighter, the rope net is stronger, and it is more practical.

[0055] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

Claims

1. A hexagonal space rope net with a retractable end, characterized in that: It includes a regular hexagonal bottom frame rope, a regular hexagonal inner frame rope arranged on the inner side of the bottom frame rope, three reinforcing ropes, six traction ropes, a mooring rope, six closing ropes and a plurality of closing rope rings connected to the bottom frame rope at intervals; the middle parts of the three reinforcing ropes are interconnected to form the center of the space rope net, and the two ends of each reinforcing rope are respectively connected to the two vertices of the inner frame rope in sequence and then connected to the two vertices of the bottom frame rope, the inner frame rope and each of the reinforcing ropes enclose six equilateral triangle areas with dense mesh purposes, and the bottom frame rope, the inner frame rope and each of the reinforcing ropes enclose six equilateral trapezoidal areas with sparse mesh purposes; the six closing ropes respectively pass through the closing rope rings connected to the six sides of the bottom frame rope, the two ends of each reinforcing rope are respectively connected to a traction rope, and the mooring rope is connected to the center of the space rope net.

2. The retractable hexagonal space rope net according to claim 1, characterized in that: The middle parts of the three reinforcing ropes are connected together by serration using aramid III wire.

3. The retractable hexagonal space rope net according to claim 1, characterized in that: Each side of the bottom frame string is parallel to each side of the inner frame string.

4. The weaving method of the hexagonal space rope net with closing end according to any one of claims 1 to 3, characterized in that: The following steps are involved: Cut three reinforcing ropes of equal length, align the twists, connect and fix the middle parts of the three reinforcing ropes, and arrange them in an * shape; Arrange the inner frame ropes into a regular hexagon, and connect the two ends of the three reinforcing ropes to the vertices of the regular hexagon of the corresponding inner frame ropes by ordinary knotting and fixing method; Arrange the bottom frame ropes into a regular hexagon, connect the two ends of the three reinforcing ropes to the corresponding vertices of the regular hexagon of the bottom frame ropes by ordinary knotting and fixing, and extend the remaining rope ends at the two ends of the three reinforcing ropes as traction ropes; Connecting the closing rope rings to the bottom frame rope at intervals; After breaking the twist of the mooring rope, one of the rope ends is passed around the center of the three reinforcing ropes to connect and fix; The mesh braided material is untwisted and then knotted from the inside outward at the center of the three reinforcing ropes to form a diamond-shaped dense mesh; After the mesh braiding material is untwisted, knots are tied from the inside to the outside at each side of the inner frame rope to form a diamond-shaped open mesh; The closing rope is untwisted and passed through the corresponding closing rope rings connected to each side of the bottom frame rope.

5. The weaving method of the hexagonal space rope net with closing end according to claim 4, characterized in that: The ordinary knot-sewing fixation method is as follows: tie an ordinary knot around the two ends of the second braided rope, straighten the first braided rope and pass it through the cavity formed by the knot of the second braided rope, tighten the two ends of the second braided rope, and use a double-strand aramid III thread hand needle to pass through the first braided rope and the second braided rope, and complete the knotting and fixation after 2-3 stitches.

6. The weaving method of the hexagonal space rope net with closing end according to claim 4, characterized in that: The inner frame rope and the bottom frame rope are twisted separately, and the two rope ends are overlapped and serrated to form a loop, which is then arranged into a regular hexagon.

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