Lightweight fiber oceanic tensegrity structure node system and method of use

Abstract

The embodiment of the application relates to the technical field of tensegrity structures, and particularly relates to a lightweight fiber marine tensegrity structure node system and a use method, the tensegrity structure node system comprising a central shaft, a plurality of central blocks, edge blocks and corner blocks arranged on the central shaft in the form of a three-order magic cube, a rod connecting structure arranged on at least one central block, the edge blocks and the corner blocks being hollow structures, each of the edge blocks and the corner blocks being respectively provided with an entering-cable hole and an exiting-cable hole on at least two mutually perpendicular outer surfaces, each of the edge blocks and the corner blocks being provided with a fixed pulley for cable winding in the inner cavity, and a cable connecting structure being arranged at the exiting-cable hole of at least part of the plurality of edge blocks and corner blocks, the plurality of central blocks, edge blocks and corner blocks being divided into three layers of independent units along the node height direction, and the node system and the use method have the advantages that external loads such as wind and waves can be effectively absorbed by the node.

Description

Technical Field

[0001] This invention relates to the field of tensioned monolithic structure technology, and in particular to a lightweight fiber marine tensioned monolithic structure node system and its usage method. Background Technology

[0002] Tensioned monolithic structures originated abroad, and since the late 20th century, their theoretical research and application have developed rapidly. However, traditional tensioned monolithic structure nodes are not only heavy, but also, due to the irregular shape of the structure, cannot be quickly connected. This often leads to numerous shortcomings when constructing tensioned monolithic structures, especially when using lightweight fiber materials. Furthermore, in severe marine weather, nodes are easily damaged by strong winds and waves, resulting in structural failure and safety issues.

[0003] Traditional tensioned monolithic structural nodes are typically fixed nodes. While this type of node offers greater stiffness under heavy loads, it also increases structural complexity, requiring precise calculations of its load-bearing capacity. Furthermore, it doesn't guarantee the structure's degrees of freedom, preventing effective deformation under external forces. In harsh environments like the ocean, such nodes lack resistance to wind and waves, making them prone to fatigue failure. This not only increases maintenance costs but also significantly raises the risk of accidents. Moreover, existing node systems are often complex, difficult to install and operate, resulting in low installation efficiency and hindering their adaptation to the large-scale demands of modern industry.

[0004] Among current related technologies, patent application CN115874817A discloses a novel tensioned integral ring structure, which includes multiple nodes, diagonal compression members, and cable units. Its system emphasizes simple and efficient construction and self-balancing capabilities; all nodes in the structure are hinged, which better balances circumferential pressure and provides greater stiffness. However, its maintenance costs are too high, the components require frequent cleaning and moistening, and the connections are not simple or quick enough, making it unsuitable for use in harsh environments such as the ocean.

[0005] Therefore, how to simplify the design of node structures while enabling nodes to absorb external loads such as wind and waves through appropriate deformation to reduce stress has become an urgent problem to be solved in the field of tensioned monolithic structures. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a lightweight fiber marine tension integral structure node system and its usage method. The node system and its usage method have the advantage of enabling the nodes to effectively absorb external loads such as wind and waves.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] This specification first provides a lightweight fiber marine tension integral structure node system, including a central axis and a plurality of central blocks, edge blocks and corner blocks arranged on the central axis in the form of a third-order Rubik's Cube. At least one central block is provided with a rod connection structure. The edge blocks and corner blocks are hollow and each of them has a cable inlet hole and a cable outlet hole on at least two mutually perpendicular outer surfaces. The inner cavity of each edge block and corner block is provided with a fixed pulley for the cable to pass through, and at least some of the edge blocks and corner blocks are provided with cable connection structures at the cable outlet holes.

[0009] To optimize the above plan, the following measures were also taken:

[0010] As one implementation, the plurality of center blocks, edge blocks, and corner blocks are divided into three layers of independent units along a predetermined direction, the predetermined direction being parallel to the axial direction of one of the central axes, and the upper and lower independent units are configured to be able to rotate relative to the middle independent unit about the axial direction.

[0011] In one embodiment, the central shaft includes a shaft, a tightening screw, and a spring. The shaft is composed of an inner shaft section with a larger radius and an outer shaft section with a smaller radius. The end face of the outer shaft section is provided with a threaded groove. The tightening screw is installed in the threaded groove. The spring is nested on the surface of the outer shaft section and abuts against the tightening screw and the outer shaft section axially upward. The central block has a hollow structure, and its hollow inner cavity is sleeved on the outer shaft section and fixed by the tightening screw.

[0012] In one embodiment, the central block includes a square block and a hollow shaft. The square block is a spherical curved surface with an open outer end and a concave inner end. The hollow shaft is connected to the spherical curved surface and is sleeved on the outer shaft section and clamped between the tightening screw and the inner shaft section.

[0013] In one embodiment, the rod connection structure includes a small cylinder and a large cylinder. The small cylinder is composed of a cylindrical tube with a tapered end. A deformation groove extending axially upward is formed on the end face of the tapered end. The tapered end of the small cylinder has an opening for the rod to be inserted. The outer surface of the small cylinder has external threads. The large cylinder is composed of a cylindrical tube with a tapered end. The inner surface of the large cylinder has internal threads. The small cylinder and the large cylinder are connected by external and internal threads, so as to compress the tapered end of the small cylinder to deform the deformation groove and press the rod.

[0014] As one embodiment, the corner block has three fan-shaped fixing blocks extending vertically toward their respective adjacent edge blocks on its three inner sides, and the edge block has fan-shaped openings that are inserted and engaged with the corresponding fan-shaped fixing blocks on its three inner sides.

[0015] As one embodiment, each of the four corners of the spherical curved surface of the cube is provided with a right-angle anti-slip key, and the inner side of the edge block adjacent to the center block is provided with an L-shaped fixing block. In the upper and lower independent units, one end of the L-shaped fixing block is embedded in the limiting recess formed by the two anti-slip keys on the same side of the adjacent center block and the spherical curved surface, and the other end is connected to the limiting rotation groove formed by the anti-slip keys, edge blocks and central shaft of each center block in the middle independent unit.

[0016] In the middle layer independent unit, one end of the L-shaped fixing block is embedded in the limiting recess formed by the two anti-slip keys and the spherical curved surface on the same side of the adjacent center block, and the other end is connected to the limiting recess formed by the two anti-slip keys and the spherical curved surface of the center block in the other direction of the same layer.

[0017] As one embodiment, the cable connection structure includes a fixed ring, a conical slider, and a fixed spring. The fixed ring has symmetrical I-shaped grooves on its inner side. The bottom of the conical slider has a T-shaped slider, which is connected to the I-shaped groove to connect the fixed ring and the conical slider. The fixed spring is symmetrically welded to the side of the fixed ring with the I-shaped groove. The other end of the fixed spring is connected to the surface of the corresponding block. The cable outlet hole has a groove for the conical slider to enter the inner cavity of the corresponding block and be inserted into the cable.

[0018] As one embodiment, it also includes a universal joint, which includes a first sleeve, a second sleeve, and a connecting member. The first sleeve and the second sleeve are configured to pass through each other, and the cable passes through and is embedded in the first sleeve and the second sleeve. A fork lug is symmetrically provided at one end, and a connection port is opened on the fork lug. The connecting member is cuboid with a circular through hole in the middle and connecting cylinders on the four sides. The connecting cylinders are connected to the first sleeve and the second sleeve in pairs. The end of the first sleeve in the universal joint without the fork lug is welded to a fixed ring and connected to the edge block and corner block through the fixed ring.

[0019] This embodiment also provides a method for using the above-mentioned lightweight fiber marine tensioned monolithic structure node system, including the following steps:

[0020] Step a: Position the center block with the rod connection structure toward the direction where it will connect with the rod;

[0021] Step b: Connect the rod to the rod connection structure on the corresponding center block;

[0022] Step c: Insert the cable through the cable inlet hole of the edge block or corner block, pass it around the fixed pulley and exit through the cable outlet hole. After applying prestress, fasten it to the corresponding block through the cable connection structure. After the cable and rod are assembled, the upper and lower independent units are offset from the middle independent unit by a set angle. At this time, the structure is tensioned and formed.

[0023] Because of the adoption of the above-described solution, one or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0024] (1) The central axis allows the center block, edge block and corner block to rotate relative to each other in the form of a 3x3 Rubik's Cube, ensuring the degree of freedom of the structure, enabling the tensioned overall structure to deform effectively under external force, reducing stress concentration and improving the fatigue resistance of the nodes.

[0025] (2) The large number of center pieces, edge pieces and corner pieces can meet the connection of multiple cables at the same node, thereby reducing the cost of using the node and expanding the application scenarios and scope of the node;

[0026] (3) In the rod connection structure, the small cylinder and the large cylinder are tightened by threads to ensure the stability of the rod connection;

[0027] (4) In the cable connection structure, the cable is tightened by the retraction of the cable after the prestress is applied, which improves the convenience of the cable connection;

[0028] (5) Universal joints can flexibly adapt to the installation direction of cables, increasing the possibility of more cable connections and adapting to the diverse characteristics of nodes in tensioned overall structures;

[0029] (6) The spring can control the tightness of the screw and adjust the force required for rotation, thereby reasonably controlling the deformation of the node. This not only allows the node to absorb and disperse stress through deformation, but also reduces swaying and increases the reliability of the cable connection. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only involve some embodiments of this application and should not be construed as limiting this application.

[0031] Figure 1 This is a schematic diagram of the node system in its initial state in an embodiment of this application;

[0032] Figure 2 This is a first-view internal diagram of the node system in use in an embodiment of this application;

[0033] Figure 3 This is a second-view internal schematic diagram of the node system in use in the embodiments of this application;

[0034] Figure 4 This is a third-person view of the internal structure of the node system in use, as shown in the embodiments of this application.

[0035] Figure 5This is a cross-sectional schematic diagram of the node system in its initial state from a first-view perspective in an embodiment of this application;

[0036] Figure 6 This is a cross-sectional schematic diagram of the node system in its initial state from a second perspective, as described in the embodiments of this application.

[0037] Figure 7 This is a schematic diagram of the structure of some components of the node system in the embodiments of this application;

[0038] Figure 8 This is a schematic diagram of the structure of the central block 1 in an embodiment of this application;

[0039] Figure 9 This is a schematic diagram of the structure of the large cylinder in the embodiments of this application;

[0040] Figure 10 This is a schematic diagram of the structure of central block two in an embodiment of this application;

[0041] Figure 11 This is a schematic diagram of the edge block structure in an embodiment of this application;

[0042] Figure 12 This is a schematic diagram of the corner block structure in an embodiment of this application;

[0043] Figure 13 This is a partial structural diagram of the cable connection structure in an embodiment of this application;

[0044] Figure 14 This is a schematic diagram of the tapered slider in an embodiment of this application;

[0045] Figure 15 This is a schematic diagram of the universal joint structure in an embodiment of this application;

[0046] Figure 16 This is a schematic diagram of the tensioned integral structure in the embodiments of this application;

[0047] Figure 17 for Figure 16 Schematic diagram of the structure of node 1;

[0048] Figure 18 for Figure 16 Schematic diagram of the structure of node 2;

[0049] Figure 19 for Figure 16 A schematic diagram of the structure of node 3 in the middle.

[0050] Figure label:

[0051] 1. Central shaft; 2. Central block one; 3. Edge block; 4. Corner block; 5. Cable connection structure; 6. Central block two; 7. Universal joint; 101. Shaft; 102. Tightening screw; 103. Spring; 104. Threaded groove; 105. Inner shaft section; 106. Outer shaft section; 107. Auxiliary anti-slip block; 201. Small cylinder; 202. Large cylinder; 203. External thread; 204. Internal thread; 205. Deformation groove; 206. Anti-slip key one; 207. Square block one; 208. Hollow shaft one; 301. Fixed pulley one; 302. Cable inlet hole one; 303. Cable outlet hole one; 304. L-shaped 305. Fixed block; 306. Fan-shaped opening; 307. Arc surface; 401. Slide groove one; 402. Fan-shaped fixed block; 403. Opening surface; 404. Fixed pulley two; 405. Cable inlet hole two; 406. Cable outlet hole two; 501. Slide groove two; 502. Fixed ring; 503. Conical slider; 504. Fixed spring; 505. I-shaped groove; 506. T-shaped slider; 601. Square block two; 602. Hollow shaft two; 603. Anti-slip key two; 701. Sleeve one; 702. Sleeve two; 703. Connecting piece; 704. Fork lug; 705. Connecting port; 706. Connecting cylinder. Detailed Implementation

[0052] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings, so as to more clearly understand the purpose, features and advantages of this invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of this invention, but are only for illustrating the essential spirit of the technical solutions of this invention. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0053] Unless the context requires otherwise, throughout the specification and claims, the word “comprising” and its variations, such as “including” and “having”, shall be understood to have an open, inclusive meaning, that is, to be interpreted as “including, but not limited to”.

[0054] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0055] The singular forms “a” and “the” used in this specification and the appended claims include plural references unless otherwise expressly stated herein. It should be noted that the term “or” is generally used to mean “and / or” unless otherwise expressly stated herein.

[0056] In the following description, in order to clearly demonstrate the structure and working method of the present invention, a number of directional terms will be used. However, terms such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and not as limiting terms.

[0057] The implementation details of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following content is only for the convenience of understanding the implementation details and is not necessary for implementing this solution.

[0058] This embodiment provides a lightweight fiber marine tensioned monolithic structural node system and its usage method, aiming to solve the problems of existing tensioned monolithic structural node systems, such as the inability to absorb external loads such as wind and waves through deformation, as well as the complexity of the structure and the high cost of use. It not only enables the tensioned monolithic structural node to absorb external wind and wave loads through reasonable deformation and improve fatigue resistance, but also makes the structure simpler and has high scalability and structural responsiveness.

[0059] The following section, with reference to the accompanying drawings, explains in detail how this solution addresses the aforementioned technical problems.

[0060] refer to Figure 1 In this embodiment, the lightweight fiber marine tension integral structure node system specifically includes a central axis 1 and multiple central blocks, edge blocks 3 and corner blocks 4 arranged on the central axis 1 in the form of a third-order Rubik's Cube. At least one central block is equipped with a rod connection structure. The edge blocks 3 and corner blocks 4 are hollow structures, and each of them has a cable inlet hole and a cable outlet hole on at least two mutually perpendicular outer surfaces. The inner cavity of each edge block 3 and corner block 4 is equipped with a fixed pulley for the cable to pass through, and at least some of the cable outlet holes of the multiple edge blocks 3 and corner blocks 4 are equipped with cable connection structures 5.

[0061] In this embodiment, the central axis 1 is a centrally symmetrical structure with six joints that are perpendicular to each other. When the node system is in use, the rod is first connected to the rod connection structure of the corresponding central block, and then the cable is connected. The cable is inserted through the cable inlet hole of the edge block 3 or corner block 4, passes around the fixed pulley and exits through the cable outlet hole. After applying prestress, it is fastened to the corresponding block through the cable connection structure to complete the cable rod connection.

[0062] In this embodiment, the central axis 1 allows the central block, edge block 3 and corner block 4 to rotate relative to each other, ensuring the degree of freedom of the node system. This enables the tensioned overall structure to deform effectively under external forces, and absorb and disperse external wind and wave loads during this process, reducing stress concentration and improving the fatigue resistance and wind and wave resistance of the node system.

[0063] In this embodiment, the large number of center blocks, edge blocks 3, and corner blocks 4 provides abundant and expandable connection points to meet the connection of multiple cables at the same node, thereby improving the adaptability and flexibility of the node system and reducing the cost of using the node system.

[0064] In this embodiment, the node system is configured in the form of a 3x3 Rubik's Cube, which can realize the assembly and positioning of multiple node blocks in multiple dimensions through a simple, reliable and mature connection structure, thereby simplifying the structural design and ensuring that each connection point has sufficient connection strength.

[0065] In this embodiment, as Figures 2 to 4 As shown, the multiple center blocks, edge blocks 3, and corner blocks 4 are divided into three layers of independent units along a predetermined direction, which is parallel to the axial direction of one of the axes of the central axis 1. The upper and lower independent units are constructed to be able to rotate relative to the middle independent unit around the axial direction. Here, the axial direction is parallel to the direction of the rod connection. It should be noted that each layer of independent units can be constrained as an integral structure. The edge blocks 3 or corner blocks 4 within this integral structure can be set to a relatively fixed form without mutual movement, while only ensuring the movement and deformation of each independent unit as a whole relative to other units. This can absorb external wind and wave loads through node deformation, further simplify node design, and enhance the connection strength of the structure. After the cables and rods are assembled, the upper and lower independent units are offset from the middle independent unit by a set angle, at which point the structure is tensioned and formed.

[0066] In this embodiment, as Figures 5 to 7 As shown, the central shaft 1 includes a shaft 101, a tightening screw 102, and a spring 103. The shaft 101 is composed of an inner shaft section 105 with a larger radius and an outer shaft section 106 with a smaller radius. The end face of the outer shaft section 106 is provided with a threaded groove 104. The tightening screw 102 is installed in the threaded groove 104. The spring 103 is nested on the surface of the outer shaft section 106 and abuts against the tightening screw 102 and the outer shaft section 106 axially upward. The central block has a hollow structure and its hollow inner cavity is sleeved on the outer shaft section 106 and fixed by the tightening screw 102.

[0067] Furthermore, it also includes an auxiliary anti-slip block 107, which is L-shaped and located on the inner shaft section 105 with a larger radius. The inner end of the center block abuts against the auxiliary anti-slip block 107 to prevent excessive fastening force on the center block, which would cause the center block and the center shaft 1 to slip in the corresponding axial direction.

[0068] In this embodiment, the center block is fixed to the outer shaft section 106 by a tightening screw 102, that is, fixed between the head of the tightening screw 102 and the shoulder transition part of the inner shaft section 105 and the outer shaft section 106. The tightening force of the tightening screw 102 on the center block can be adjusted by a spring, thereby adjusting the rotational damping of the center block and adjusting the deformation damping of the node system when absorbing external loads, so as to absorb external loads through reasonable deformation and enhance the adaptability of the node system.

[0069] refer to Figure 3 , Figure 7 as well as Figure 10 As shown, the center block includes a cube and a hollow shaft. The cube is a spherical surface with an open outer end and a concave inner end. The hollow shaft is connected to the spherical surface and is sleeved on the outer shaft section 106 and clamped between the tightening screw 102 and the inner shaft section 105, thereby fixing the center block on the center shaft 1.

[0070] Specifically, in this embodiment, the center block includes two forms: center block 1 (2) and center block 2 (6). Center block 1 (2) is used to connect the rods, while center block 2 (6) provides support for each face of the node and also provides expandable rod connection points. Center block 1 (2) is connected to one of the shafts 101 via hollow shaft 1 (208), and center block 2 (6) is connected to the other five shafts 101 via hollow shaft 2 (602). They are fixed to the outer shaft section 106 by tightening screws 102, forming the six surfaces of the Rubik's Cube.

[0071] Here, the central block 2 includes a square block 207 and a hollow shaft 208. The square block 207 is a hollow square without a cover. One side of the square block 207 is connected to the small cylinder 201 in the rod connection structure, and four anti-slip keys 206 are symmetrically arranged on the other side. The hollow shaft 208 is composed of two hollow cylinders with different radii. The end of the hollow shaft 208 with the smaller radius is connected to the square block 207, and the end with the larger radius protrudes and surrounds the tightening screw 102, which plays a protective role.

[0072] Here, as Figure 10As shown, the central block 2 6 includes a square block 2 601 and a hollow shaft 2 602. The square block 2 601 is a hollow square without a cover. Four anti-slip keys 2 603 are symmetrically arranged on one side of the square block 2 601. The hollow shaft 2 602 is composed of two hollow cylinders with different radii. The end of the hollow shaft 2 602 with the smaller radius is connected to the square block 2 601, and the end with the larger radius protrudes and surrounds the tightening screw 102, which plays a protective role.

[0073] In this embodiment, reference Figures 2 to 7 as well as Figure 11 As shown, the edge block 3 includes a fixed pulley 301, a cable inlet hole 302, a cable outlet hole 303, an L-shaped fixing block 304, and a fan-shaped opening 305. The fixed pulley 301 is welded to the inner wall of the two adjacent sides of the cable inlet hole 302 and the cable outlet hole 303 inside the edge block 3. Both the cable inlet hole 302 and the cable outlet hole 303 are circular holes. The cable outlet hole 303 has symmetrically opened grooves 307. The function of the grooves 307 will be described below. The L-shaped fixing block 304 is welded to the arc surface 306. The arc surface 306 is aligned with the corresponding side of the center block, so that the L-shaped fixing block 304 can be embedded between the anti-slip key 206 or the anti-slip key 603 along the spherical curved surface of the center block. The fan-shaped opening 305 is a 90° fan-shaped cross section, which is opened on the two vertices of the two sides of the L-shaped fixing block 304.

[0074] In this embodiment, reference Figures 2 to 7 as well as Figure 12 As shown, corner block 4 includes a fan-shaped fixing block 401, a second fixed pulley 403, a second cable inlet hole 404, and a second cable outlet hole 405. The second fixed pulley 403 is welded to the inner wall of the two adjacent sides of the second cable inlet hole 404 inside corner block 4. The second cable outlet hole 405 has symmetrically opened sliding grooves 406. The fan-shaped fixing block 401 is in the shape of a 90° arc and is centrally symmetrically distributed. It is welded to the three adjacent inner sides of corner block 4. More specifically, corner block 4 includes an opening surface 402, which is opposite to the second cable inlet hole 404. One of the fan-shaped fixing blocks 401 is welded to the opening surface 402.

[0075] Here, the three inner sides of the corner block 4 are provided with three fan-shaped fixing blocks 401 that extend vertically toward their respective adjacent edge blocks 3, and the three inner sides of the edge block 3 are provided with fan-shaped openings 305 that are inserted and cooperate with the corresponding fan-shaped fixing blocks 401.

[0076] In the node assembly state, the three sector-shaped fixing blocks 401 are respectively inserted into the sector-shaped openings 305 of the corresponding edge blocks 3. When the node system rotates and deforms, even if one sector-shaped fixing block 401 is disengaged from the corresponding sector-shaped opening 305, the other two sector-shaped openings 305 are still not disengaged from the corresponding sector-shaped fixing blocks 401. Therefore, at least two degrees of freedom in the rotation process can be restricted. At the same time, the degree of freedom in the other direction is restricted by the limiting slot formed by the middle layer independent units, ensuring that the corner block 4 can be stably connected to the node system without loosening or falling off. Its limiting principle is similar to that of a Rubik's Cube and is a known method, which will not be described in detail here.

[0077] Here, each of the four corners of the spherical curved surface of the cube is provided with a right-angle anti-slip key, and the inner side of the edge block 3 adjacent to the center block is provided with an L-shaped fixing block 304. In the upper and lower independent units, such as Figure 3 and Figure 11 As shown, one end of the L-shaped fixing block 304 is embedded in the limiting recess formed by the two anti-slip keys on the same side of the adjacent center block and the spherical curved surface, and the other end is connected to the limiting groove formed by the anti-slip keys, edge blocks 3 and central axis 1 of each center block in the middle layer independent unit. This prevents the edge blocks 3 and corner blocks 4 of the upper and lower layer units from detaching from the top when the node unit rotates. In the middle layer independent unit, one end of the L-shaped fixing block 304 is embedded in the limiting recess formed by the two anti-slip keys on the same side of the adjacent center block and the spherical curved surface, and the other end is connected to the limiting recess formed by the two anti-slip keys and spherical curved surface of the center block in the other direction of the same layer. In this way, the middle layer independent unit limits the edge blocks 3 of the layer to a non-loose integral structure through the four center blocks of the middle layer, thereby providing a limiting function for the upper and lower independent units and ensuring the connection strength of the entire node system.

[0078] In this embodiment, reference Figures 5 to 9 As shown, the rod connection structure includes a small cylinder 201 and a large cylinder 202. The small cylinder 201 is composed of a cylindrical tube with a tapered end. A deformation groove 205 extending axially upward is provided on the end face of the tapered end. The tapered end of the small cylinder 201 has an opening for the rod to be inserted. The outer surface of the small cylinder 201 has an external thread 203. The large cylinder 202 is composed of a cylindrical tube with a tapered end. The inner surface of the large cylinder 202 has an internal thread 204. The small cylinder 201 and the large cylinder 202 are connected by the external thread 203 and the internal thread 204, so that the tapered end of the small cylinder 201 is squeezed to deform the deformation groove 205 and press the rod.

[0079] When in use, insert the rod into the tapered end of the deformable groove 205 of the small cylinder 201 through the opening, and tighten the large cylinder 202 and the small cylinder 201 through the external thread 203 and the internal thread 204 to fix the rod at the center block 2.

[0080] In this embodiment, reference Figure 6 , Figure 13 as well as Figure 14 As shown, the cable connection structure 5 includes a fixed ring 501, a conical slider 502, and a fixed spring 503. The fixed ring 501 has symmetrically opened I-shaped grooves 504 on its inner side. The bottom of the conical slider 502 is provided with a T-shaped slider 505. The T-shaped slider 505 is connected to the I-shaped groove 504 to connect the fixed ring 501 and the conical slider 502. The fixed spring 503 is symmetrically welded to the side of the fixed ring 501 with the I-shaped groove 504. The other end of the fixed spring 503 is connected to the surface of the corresponding block. The cable outlet hole is provided with a groove for the conical slider 502 to enter the inner cavity of the corresponding block and be inserted into the cable.

[0081] In this embodiment, reference Figure 1 and Figure 15 As shown, it also includes a universal joint 7, which includes a first sleeve 701, a second sleeve 702, and a connecting member 703. The first sleeve 701 and the second sleeve 702 are configured to pass through each other, and the cable passes through and is embedded in the first sleeve 701 and the second sleeve 702. A fork lug 704 is symmetrically provided at one end, and a connection port 705 is opened on the fork lug 704. The connecting member 703 is a cuboid with a circular through hole in the middle and connecting cylinders 706 on the four sides. The connecting cylinders 706 are connected to the first sleeve 701 and the second sleeve 702 in pairs. The first sleeve 701 in the universal joint 7, without the fork lug 704, is welded to the fixed ring 501 and connected to the edge block 3 and the corner block 4 through the fixed ring 501.

[0082] When it is necessary to connect the cable to the node, first insert the cable through the cable inlet hole of the edge block 3 or corner block 4, pass around the fixed pulley and exit through the cable outlet hole, universal joint 7 sleeve 1 701, connector 703 and sleeve 2 702 circular through hole, rotate the upper and lower independent units, the middle independent unit and universal joint 7 to the appropriate position, tighten the cable and apply prestress, drive the fixed spring 503 to stretch, after the cable is released the cable retracts, drive the conical slider 502 to clamp the cable, and the fixed spring 503 assists in driving the conical slider 502 to tension and form the structure.

[0083] In addition, this embodiment also provides a method for using the above-mentioned lightweight fiber marine tensioned monolithic structure node system, which specifically includes the following steps:

[0084] Step a: Position the center block with the rod connection structure toward the direction where it will connect with the rod;

[0085] Step b: Connect the rod to the rod connection structure on the corresponding center block;

[0086] Step c: Insert the cable through the cable inlet hole of the edge block 3 or corner block 4, pass it around the fixed pulley and exit it through the cable outlet hole. After applying prestress, it is fastened to the corresponding block through the cable connection structure 5. After the cable and rod are assembled, the upper and lower independent units are offset from the middle independent unit by a set angle. At this time, the structure is tensioned and formed.

[0087] Specifically, such as Figure 16 and Figure 17 As shown, Figure 16 This illustrates a case of a tensioned monolithic structure, where node 1 of the tensioned monolithic structure node system simultaneously connects one rod and four cables, with the rod arranged vertically. The specific steps include:

[0088] Step a: Insert the rod into the conical end of the deformable groove 205 of the small cylinder 201, and tighten the large cylinder 202 and the small cylinder 201 through the external thread 203 and the internal thread 204 to fix the rod at the center block 2.

[0089] Step b: Insert cable 1 through cable inlet hole 404 of one corner block 4 of the lower independent unit, pass it around fixed pulley 403 and exit through cable outlet hole 405. Insert cables 3 and 4 through cable inlet holes 404 of the upper independent unit corner block 4 and cable inlet holes 404 of the middle independent unit corner block 4 in the same way, and exit through their respective cable outlet holes 405. Insert cable 2 through cable inlet hole 302 of the middle independent unit edge block 3, pass it around fixed pulley 301 and exit through cable outlet hole 303 and the circular through hole of universal joint 7. Rotate each independent unit and universal joint 7 to the appropriate position, tighten the four cables and apply prestress, drive the fixed spring 503 to stretch, release the cables and retract them, drive the conical slider 502 to clamp the cables, and the fixed spring 503 assists in driving the conical slider 502 to tension and shape the structure.

[0090] Specifically, such as Figure 16 and Figure 18 As shown, the tensioning of the integral structural node system at node 2 simultaneously connects one rod and five cables, specifically including the following steps:

[0091] Step a: Insert the rod into the conical end of the deformable groove 205 of the small cylinder 201, and tighten the large cylinder 202 and the small cylinder 201 through the external thread 203 and the internal thread 204 to fix the rod at the center block 2.

[0092] Step b: Insert cable 1 through cable inlet hole 404 of corner block 4 of the lower independent unit, pass it around fixed pulley 403 and exit through cable outlet hole 405. Insert cable 4 through cable inlet hole 404 of corner block 4 of the upper independent unit in the same way and exit through cable outlet hole 405. Insert cables 2, 3 and 5 through cable inlet holes 302 of the three separated edge blocks 3 of the middle independent unit, pass them around fixed pulley 301 and exit through cable outlet hole 303 and the circular through hole of universal joint 7. Rotate each independent unit and universal joint 7 to the appropriate position, tighten the five cables and apply prestress, drive the fixed spring 503 to stretch, release the cables and retract them, drive the conical slider 502 to clamp the cables, and the fixed spring 503 assists in driving the conical slider 502 to tension and shape the structure.

[0093] Specifically, such as Figure 16 and Figure 19 As shown, the tensioning integral structure node system at node 3 simultaneously connects one rod and six cables, specifically including the following steps:

[0094] Step a: Insert the rod into the conical end of the deformable groove 205 of the small cylinder 201, and tighten the large cylinder 202 and the small cylinder 201 through the external thread 203 and the internal thread 204 to fix the rod at the center block 2.

[0095] Step b: Insert cable 1 through cable inlet hole 302 of the middle independent unit edge block 3, pass it around the fixed pulley 301, and exit through cable outlet hole 303. Insert cables 3 and 5 in the same way through cable inlet holes 404 and 404 of the upper and lower independent unit corner blocks 4, respectively, and exit through cable outlet hole 405. Insert cable 2 through cable inlet hole 404 of the other upper independent unit corner block 4, pass it around the fixed pulley 403, and exit through cable outlet hole 405 and the circular through hole of universal joint 7. Insert cable 4 through cable inlet hole 3 of the other middle independent unit edge block 3. The cable 6 is inserted through hole 302, passes around fixed pulley 301, and exits through cable outlet hole 303 and the circular through hole of universal joint 7. Cable 6 is inserted through cable inlet hole 302 of upper independent unit block 3, passes around fixed pulley 301, and exits through cable outlet hole 303 and the circular through hole of universal joint 7. Each layer of independent unit and universal joint 7 is rotated to a suitable position, the six cables are tightened and prestress is applied, which drives fixed spring 503 to stretch. After the cable is released, the cable retracts, which drives conical slider 502 to clamp the cable. Fixed spring 503 assists in driving conical slider 502 to tension and shape the structure.

[0096] In this embodiment, the central shaft 1 allows the central block, edge block 3, and corner block 4 to rotate, ensuring the freedom of the structure and enabling the tensioned overall structure to deform effectively under external forces. The large number of central blocks, edge blocks 3, and corner blocks 4 allows for the connection of multiple rods and cables at the same node. The small and large cylinders are tightened by threads to ensure the stability of the rod connection. The cable connection structure utilizes the retraction of the cable after prestressing to clamp the cable, improving the convenience of cable connection. The universal joint 7 can flexibly adapt to the connection direction of the cable, increasing the possibility of more cable connections and adapting to the diverse characteristics of the tensioned overall structure nodes. The spring can control the tightness of the screw and adjust the amount of force required during rotation.

[0097] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or basic characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects. The scope of the invention is defined by the appended claims rather than the foregoing description. Therefore, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0098] 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 lightweight fiber marine tensioned monolithic structural node system, characterized in that, The cube includes a central axis (1) and multiple center pieces, edge pieces (3), and corner pieces (4) arranged on the central axis (1) in the form of a 3x3 Rubik's Cube. At least one center piece is equipped with a rod connection structure. The edge pieces (3) and corner pieces (4) are hollow and each of them has a cable entry hole and a cable exit hole on at least two mutually perpendicular outer surfaces. Each of the edge pieces (3) and corner pieces (4) has a fixed pulley in its inner cavity for the cable to pass through. At least a portion of the multiple edge pieces (3) and corner pieces (4) have cable connection structures (5) at their cable exit holes. The multiple center pieces, edge pieces (3), and corner pieces (4) are divided into three independent units along a predetermined direction, which is parallel to the axial direction of one of the axes of the central axis (1). The upper and lower independent units are constructed to be able to rotate relative to the middle independent unit about the axial direction. The central axis (1) includes an axis. (101), a tightening screw (102), and a spring (103). The shaft (101) is composed of an inner shaft section (105) with a larger radius and an outer shaft section (106) with a smaller radius. The end face of the outer shaft section (106) is provided with a threaded groove (104). The tightening screw (102) is installed in the threaded groove (104). The spring (103) is nested on the surface of the outer shaft section (106) and abuts against the tightening screw axially upward. (102) Between the outer shaft section (106), the central block is hollow and its hollow inner cavity is fitted onto the outer shaft section (106) and fixed by the tightening screw (102). The central block includes a square block and a hollow shaft. The square block is a spherical surface with an open outer end and an outwardly concave inner end. The hollow shaft is connected to the spherical surface. The hollow shaft is fitted onto the outer shaft section (106) and is clamped between the tightening screw (102) and the inner shaft section (105).

2. The lightweight fiber marine tensioned monolithic structure node system according to claim 1, characterized in that, The rod connection structure includes a small cylinder (201) and a large cylinder (202). The small cylinder (201) is composed of a cylindrical tube with a tapered end. A deformation groove (205) extending axially upward is provided on the end face of the tapered end. The tapered end of the small cylinder (201) has an opening for the rod to be inserted. The outer surface of the small cylinder (201) has an external thread (203). The large cylinder (202) is composed of a cylindrical tube with a tapered end. The inner surface of the large cylinder (202) has an internal thread (204). The small cylinder (201) and the large cylinder (202) are connected by the external thread (203) and the internal thread (204) to compress the tapered end of the small cylinder (201) so that the deformation groove (205) deforms and presses the rod.

3. The lightweight fiber marine tensioned monolithic structure node system according to claim 1, characterized in that, The corner block (4) has three fan-shaped fixing blocks (401) extending vertically toward their respective adjacent edge blocks (3) on its three inner sides, and the edge block (3) has fan-shaped openings (305) that are inserted and matched with the corresponding fan-shaped fixing blocks (401) on its three inner sides.

4. The lightweight fiber marine tensioned monolithic structure node system according to claim 1, characterized in that, The four corners of the spherical curved surface of the cube are provided with right-angle anti-slip keys. The inner side of the edge block (3) adjacent to the center block is provided with an L-shaped fixing block (304). In the upper independent unit and the lower independent unit, one end of the L-shaped fixing block (304) is embedded in the limiting recess formed by the two anti-slip keys on the same side of the adjacent center block and the spherical curved surface, and the other end is connected to the limiting rotation groove formed by the anti-slip keys, edge blocks (3) and central shaft (1) of each center block in the middle independent unit. In the middle layer independent unit, one end of the L-shaped fixing block (304) is embedded in the limiting recess formed by the two anti-slip keys and the spherical curved surface on the same side of the adjacent center block, and the other end is connected to the limiting recess formed by the two anti-slip keys and the spherical curved surface of the center block in the other direction of the same layer.

5. The lightweight fiber marine tensioned monolithic structure node system according to claim 1, characterized in that, The cable connection structure (5) includes a fixed ring (501), a conical slider (502), and a fixed spring (503). The fixed ring (501) has symmetrical I-shaped grooves (504) on its inner side. The bottom of the conical slider (502) is provided with a T-shaped slider (505). The T-shaped slider (505) is connected to the I-shaped groove (504) to connect the fixed ring (501) and the conical slider (502). The fixed spring (503) is symmetrically welded to the side of the fixed ring (501) with the I-shaped groove (504). The other end of the fixed spring (503) is connected to the surface of the corresponding block. The cable outlet hole is provided with a groove for the conical slider (502) to enter the inner cavity of the corresponding block and be inserted into the cable.

6. The lightweight fiber marine tensioned integral structure node system according to claim 5, characterized in that, It also includes a universal joint (7), which includes a sleeve one (701), a sleeve two (702) and a connector (703). The sleeve one (701) and the sleeve two (702) are configured to pass through each other. The cable passes through the sleeve one (701) and the sleeve two (702) and is embedded therein. A fork lug (704) is symmetrically provided at one end. A connection port (705) is opened on the fork lug (704). The connector (703) is a cuboid with a circular through hole in the middle and connecting cylinders (706) on the four sides. The connecting cylinders (706) are connected to the sleeve one (701) and the sleeve two (702) in pairs. The sleeve one (701) in the universal joint (7) without the fork lug (704) is welded to the fixed ring (501) and connected to the edge block (3) and the corner block (4) through the fixed ring (501).

7. A method of using the lightweight fiber marine tensioned monolithic structure node system as described in claim 1, characterized in that, Includes the following steps: Step a: Position the center block with the rod connection structure toward the direction where it will connect with the rod; Step b: Connect the rod to the rod connection structure on the corresponding center block; Step c: Insert the cable through the cable inlet hole of the edge block (3) or corner block (4), pass it around the fixed pulley and exit through the cable outlet hole. After applying prestress, fasten it to the corresponding block through the cable connection structure (5). After the cable and rod are assembled, the upper and lower independent units are offset from the middle independent unit by a set angle. At this time, the structure is tensioned and formed.

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