An assembled node structure of a lightweight turnover material truss

Abstract

This invention relates to the field of truss technology, specifically to an assembly node structure for a lightweight reusable material truss. The assembly node structure includes a cross base, with linkage plates slidably connected to the four ends of the cross base. Each linkage plate has clamping plates and fixed plates slidably connected to its four sides. A toothed plate is fixed to the side of each linkage plate closest to the axis of the cross base. A linkage locking part is provided inside the cross base. A base plate is fixed to one side of the cross base, and a fastening rod is rotatably connected to the inside of the base plate. A support plate is provided outside the fastening rod. The linkage locking part includes a meshing plate slidably engaged with the inside of the cross base. A core rod is rotatably connected to the inside of the cross base, and a rotating plate is rotatably connected to the outside of the core rod. A connecting seat is slidably engaged with one side of the rotating plate. The connecting seat is rotatably connected to the meshing plate. The meshing plate and an elastic element cooperate to restrict the unidirectional movement of the toothed plate, thereby fixing the linkage plate. The linkage plate, in conjunction with the fixed plate and clamping plates, clamps the truss members.

Description

Technical Field

[0001] This invention relates to the field of truss technology, specifically to an assembly node structure for a lightweight reusable material truss. Background Technology

[0002] The load-bearing framework composed of steel and aluminum trusses provides a stable load-bearing base and installation benchmark for panels, cladding panels, insulation layers, and partitions made of autoclaved aerated concrete panels, lightweight composite insulation panels, gypsum boards, etc. The trusses, through pre-set connectors and fixing points, provide reliable suspension and support points for various panels and cladding panels, distributing the weight of the panels themselves and external loads, preventing cracking and detachment due to excessive stress at a single point. The regular grid structure of the trusses can accommodate different specifications of partition wall panels and insulation layers, providing a continuous attachment base for the panels, restraining out-of-plane deformation of the panels, and improving the overall rigidity and wind pressure resistance of the cladding and partition systems.

[0003] The assembly of steel and aluminum truss nodes requires the selection of appropriate professional construction methods based on material properties and load-bearing requirements. Core load-bearing nodes in steel trusses often employ a combination of full-penetration welding and high-strength bolt fastening, while secondary load-bearing nodes can use ordinary bolt connections and intermittent welding to ensure the continuity and stability of the force transmission path. To avoid material property damage caused by welding, aluminum trusses often utilize specialized corner brackets, tenon joints, rivet anchoring, and high-strength bolt locking methods, adapting to the convenience and precision requirements of prefabricated construction. The core function of the truss node assembly structure is to achieve rigid or hinged connections between the upper and lower chords and web members, ensuring the effective transfer of axial loads and preventing stress concentration and deformation failure in the node area.

[0004] The aforementioned and similar existing technologies, such as the fixed-size node structures used in traditional trusses, suffer from a core flaw: the connection interface specifications and adaptation parameters of the nodes are all fixed and preset. This makes it impossible to flexibly adapt to truss members with different cross-sectional dimensions, lengths, and load-bearing parameters according to actual engineering needs. When the engineering scenario requires adjusting the truss dimensions to accommodate different span requirements, load levels, and spatial layouts, corresponding node members must be re-molded, significantly increasing material costs and processing time. Furthermore, insufficient compatibility between nodes and trusses leads to a decrease in the overall structural stability and load-bearing capacity of the truss. Simultaneously, traditional truss structures have significant design flaws in panel fixing; they cannot achieve stable panel installation through their own structural system and require separate fixing devices. The installation of these additional fixing devices often necessitates drilling into the truss main structure, directly compromising the cross-sectional integrity of the truss members, weakening their structural strength and fatigue resistance, and reducing the overall service life and safety redundancy of the truss.

[0005] Therefore, the present invention provides an adaptive clamping mechanism for trusses with different cross-sectional dimensions, which greatly simplifies the truss assembly panel fixing construction process and provides an assembly node structure for lightweight reusable material trusses with high truss stability. Summary of the Invention

[0006] To address the issues of fixed-size node structures used in traditional trusses in existing technologies, which require additional fixing devices to secure the panels and weaken the structural strength and fatigue resistance of the members, a lightweight reusable material truss assembly node structure was designed.

[0007] The technical solution adopted by this invention to solve its technical problem is as follows: an assembly node structure for a lightweight reusable material truss, including a cross base, with linkage plates slidably connected to the four ends of the cross base, clamping plates and fixed plates slidably connected to the four sides of each linkage plate, and a toothed plate fixed to the side of each linkage plate near the axis of the cross base. A linkage locking part is provided on the inner side of the cross base, and an unlocking part is provided on the outer side of the linkage locking part. A base plate is fixed to one side of the cross base, and a fastening rod is rotatably connected to the inner side of the base plate. A support plate is provided on the outer side of the fastening rod. The linkage locking part includes a meshing plate slidably engaged with the inner side of the cross base, and the meshing plate and the cross base are connected by an elastic element. A core rod is rotatably connected to the inner side of the cross base, and the core rod is collinear with the cross base. A rotating part is rotatably connected to the outer side of the core rod. The plate has a sliding connecting seat on one side, which is rotatably connected to the meshing plate. The meshing plate and the elastic element cooperate to restrict the unidirectional movement of the toothed plate, thereby fixing the linkage plate. The linkage plate, together with the fixed plate and the clamping plate, holds the truss. When a single or multiple trusses are subjected to external forces such as gravity, tension, or impact, the trusses will cause the toothed plate to slide outward. This force is transmitted to the corresponding meshing plate through the toothed plate. After the meshing plate is under tension, it drives the rotating plate to deflect through the connecting seat, causing the core rod to rotate. The rotation of the core rod will synchronously drive the rotating plates, connecting seats, and meshing plates in all other directions to move synchronously, evenly distributing the load to all other trusses, offsetting the overload tendency of a single truss, realizing automatic distribution of load in four directions and self-balancing of forces, avoiding single-point overload loosening, and greatly improving the load-bearing stability and impact resistance of the node.

[0008] Furthermore, each of the four inner ends of the cross base is fixed with an elastic element, and the other end of each elastic element is fixedly connected to the side of the linkage plate near the axis of the cross base. The elastic element is used to push the linkage plate to reset after the truss is moved out.

[0009] Furthermore, each linkage plate has a set of connecting rods fixed on all four sides, with two connecting rods forming a set, and a locking rod fixed to the other end of each connecting rod.

[0010] Furthermore, each end of the cross base has two clamping plates and two sets of fixed plates slidably engaged on its inner side. The two clamping plates and two sets of fixed plates are staggered and perpendicular to each other. Each clamping plate has a clamping plate fixed on the side closest to the axis of the cross base, and two fixed plates in the same set have sliding plates fixed on the sides away from each other. The sliding plates and clamping plates are slidably engaged on the outside of the clamping rod. The clamping plates, sliding plates and clamping rods work together to allow the clamping plates and fixed plates to move toward the axis of the linkage plate to clamp the truss.

[0011] Furthermore, each rotating plate has a fixed shaft rotatably connected to its inner side. The fixed shaft is fixedly connected to the inner side of the cross base. The fixed shaft is used to cause the connecting seat and rotating plate to rotate while ensuring that the load can be transmitted between the core rod and the meshing plate through the connecting seat and rotating plate, so as to avoid serious uneven load distribution, local stress concentration, and a sharp drop in force transmission stability.

[0012] Furthermore, the unlocking component includes a clutch seat and a chuck rotatably connected to the inside of the cross base. The clutch seat and the chuck are fixedly connected. Each engagement plate has a release rod fixed at both ends along the axial direction of the cross base. The release rod is located inside the chuck.

[0013] Furthermore, a clutch groove is provided through the end of the clutch seat away from the chuck, and an elastic element three is fixed inside the fastening rod. A rotating rod is fixedly connected to the other end of the elastic element three, and a clutch plate is fixed to the end of the rotating rod near the clutch seat. The elastic element three is used to ensure that the clutch plate separates from the clutch groove under the condition of no external force.

[0014] Furthermore, the support plate is threaded to the outside of the fastening rod, and the panel is clamped between the support plate and the base plate.

[0015] The beneficial effects of this invention are:

[0016] (1) The assembly node structure of the lightweight reusable material truss described in this invention realizes the adaptive clamping and tool-free rapid pre-assembly of the truss through the linkage transmission structure of the linkage plate, connecting rod, clamping rod, clamping plate and fixed plate, which greatly simplifies the construction process of truss assembly and reduces the operation threshold and labor cost of on-site operation. When the truss is inserted, the linkage plate is directly pushed inward, and the clamping rod and clamping plate and the sliding plate are engaged by the oblique holes, which simultaneously drive the interlaced vertical clamping plate and fixed plate to retract synchronously towards the truss; no additional adjustment of alignment is required, and it can adapt to trusses of different cross-sectional sizes within the design sliding range; no need to replace node accessories or customize special nodes according to truss specifications, and at the same time, through the wedge-shaped one-way locking structure of the toothed plate and the meshing plate, the truss can be automatically locked after being inserted into place, which greatly shortens the on-site assembly time, improves the construction efficiency of truss construction, and reduces the safety hazards caused by on-site hot work, perfectly meeting the reusable use needs of quick assembly and disassembly on the construction site.

[0017] (2) The assembly node structure of the lightweight reusable material truss described in this invention achieves automatic distribution and force self-balancing of the four-way load of the truss node through the linkage locking part composed of the core rod, rotating plate, connecting seat and multi-directional meshing plate, fundamentally improving the load-bearing stability, impact resistance and structural safety of the node structure, solving the industry pain point of easy loosening and overall structural instability caused by single-point overload of traditional truss nodes. When the truss is subjected to external force, its outward sliding tendency of the toothed plate is transmitted to the core rod through the meshing plate, connecting seat and rotating plate; the rotation of the core rod drives the rotating plate, connecting seat and meshing plate in other directions to move synchronously, distributing the single-point overload load evenly to the other trusses, offsetting the overload tendency of a single truss, avoiding the hidden danger of loosening and breaking due to excessive force on a single point, and the failure of a single member causing the truss to disintegrate. The entire load distribution is automatically completed by a purely mechanical structure, with fast response and clear and reliable force transmission, improving the reliability of the node structure under complex working conditions and reducing the later maintenance cost.

[0018] (3) The assembly node structure of the lightweight reusable material truss described in this invention integrates the truss locking structure and the panel clamping structure on the cross base, thereby realizing the integrated design of truss member connection and panel installation, which greatly improves the integration and functionality of the node structure, reduces the types and quantities of accessories of the truss system, and reduces the management difficulty and material cost of on-site construction. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic cross-sectional view of the present invention. Figure 1 ;

[0022] Figure 3 for Figure 2 Enlarged view of point A;

[0023] Figure 4 This is a schematic cross-sectional view of the present invention. Figure 2 ;

[0024] Figure 5 This is a schematic cross-sectional view of the present invention. Figure 3 ;

[0025] Figure 6 for Figure 5 Enlarged view of point B;

[0026] Figure 7 This is a schematic diagram of the three-dimensional structure of the clamping plate of the present invention;

[0027] Figure 8 This is a schematic diagram of the three-dimensional structure of the fixed plate of the present invention;

[0028] Figure 9 This is a schematic diagram of the three-dimensional structure of the toothed plate of the present invention;

[0029] Figure 10 This is a schematic diagram of the three-dimensional structure of the linkage plate of the present invention;

[0030] Figure 11 This is a schematic diagram of the card plate three-dimensional structure of the present invention;

[0031] Figure 12 This is a schematic diagram of the three-dimensional structure of the skateboard of the present invention;

[0032] Figure 13 This is a schematic diagram of the three-dimensional structure of the rotating rod of the present invention;

[0033] Figure 14 This is a schematic diagram of the three-dimensional structure of the chuck of the present invention;

[0034] Figure 15 This is a partial assembly diagram of the panel, truss, and node structure.

[0035] In the diagram: 1. Cross base; 2. Linkage plate; 21. Connecting rod; 22. Clamping rod; 3. Clamping plate; 31. Clamping plate; 4. Fixed plate; 41. Slide plate; 5. Elastic element one; 6. Tooth plate; 7. Linkage locking part; 71. Engaging plate; 72. Connecting seat; 73. Elastic element two; 74. Rotating plate; 75. Core rod; 76. Fixed shaft; 9. Unlocking element; 91. Clutch seat; 92. Chuck; 93. Separating rod; 94. Clutch groove; 95. Clutch plate; 96. Elastic element three; 97. Rotating rod; 10. Fastening rod; 11. Support plate; 12. Base plate; 13. Panel; 14. Truss. Detailed Implementation

[0036] To make the technical means, technical features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0037] Example: Figures 1-15As shown, the assembly node structure of a lightweight reusable material truss of the present invention includes a cross base 1. Linkage plates 2 are slidably connected to the four ends of the cross base 1. Clamping plates 3 and fixed plates 4 are slidably connected to the four sides of each linkage plate 2. A toothed plate 6 is fixed to the side of each linkage plate 2 closest to the axis of the cross base 1. A linkage locking part 7 is provided inside the cross base 1, and an unlocking part 9 is provided outside the linkage locking part 7. A base plate 12 is fixed to one side of the cross base 1. A fastening rod 10 is rotatably connected to the inside of the base plate 12, and a support plate 11 is provided outside the fastening rod 10. The linkage locking part 7 includes a meshing plate 71 slidably engaged with the inside of the cross base 1. The meshing plate 71 and the cross base 1 are connected by an elastic element 73. A core rod 75 is rotatably connected to the inside of the cross base 1, and the core rod 75 is collinear with the cross base 1. A rotating plate 74 is rotatably connected to the outside of the core rod 75. One side of the rotating plate 74 is slidably engaged with... A connecting seat 72 is connected to the meshing plate 71. The meshing plate 71 and the elastic element 73 cooperate to restrict the unidirectional movement of the toothed plate 6, thereby fixing the linkage plate 2. The linkage plate 2 cooperates with the fixed plate 4 and the clamping plate 3 to clamp the truss 14. Two clamping plates 3 and two sets of fixed plates 4 are slidably engaged on the inner side of each end of the cross base 1. The two clamping plates 3 and the two sets of fixed plates 4 are staggered and the clamping plates 3 and the fixed plates 4 are perpendicular. Each clamping plate 3 has a fixed side near the axis of the cross base 1. The clamping plate 31 and the two fixed plates 4 in the same group are fixed to each other on the side away from each other. The sliding plate 41 and the clamping plate 31 are slidably engaged with the outside of the clamping rod 22. The clamping plate 31, the sliding plate 41 and the clamping rod 22 cooperate to make the clamping plate 3 and the fixed plate 4 move towards the axis of the linkage plate 2 to clamp the truss 14. Each linkage plate 2 has a set of connecting rods 21 fixed on its four sides. Two connecting rods 21 form a group. The other end of each connecting rod 21 is fixed with a clamping rod 22.

[0038] In this embodiment, when the worker installs the truss 14, the truss 14 is first aligned with the corresponding end of the cross base 1, and then pushed inward. The end of the truss 14 will push the linkage plate 2 to move towards the center of the cross base 1. The linkage plate 2 drives the connecting rod 21 and the locking rod 22 to move. The locking rod 22, in conjunction with the inclined holes of the locking plate 31 and the sliding plate 41, drives the clamping plate 3 and the fixed plate 4 to slide towards the truss 14. During the sliding of the linkage plate 2, the wedge-shaped engagement between the toothed plate 6 and the meshing plate 71 will push the meshing plate 71 to compress the elastic element 2 73 and retract, allowing the linkage plate 14 to move in the direction of the center of the cross base 1. The moving plate 2 and the toothed plate 6 can move smoothly inward until the four side walls at the end of the truss 14 are clamped by the clamping plate 3 and the fixed plate 4. At this time, the truss 14 is released, and the elastic element 2 73 immediately pushes the meshing plate 71 to re-engage in the tooth groove of the toothed plate 6, locking the toothed plate 6 and the linkage plate 2 in one direction to prevent them from sliding outward. At this time, the initial fixation of a single truss 14 is completed. Regardless of whether the cross-sectional size of the inserted truss 14 is too large or too small, the clamping plate 3 and the fixed plate 4 can adaptively retract and clamp within the sliding range without the need for additional parts replacement. The adaptability is better than that of the traditional fixed-size node structure.

[0039] Specifically, the support plate 11 is threaded to the outside of the fastening rod 10, and the holding panel 13 is clamped between the support plate 11 and the base plate 12.

[0040] In this embodiment, after assembling the truss 14 into a truss according to actual needs, the corresponding panel 13 is placed in the corresponding position on the base plate 12 and the support plate 11 according to the workflow. Then, the fastening rod 10 is rotated clockwise. The fastening rod 10 drives the support plate 11 to move closer to the base plate 12 through the meshing action, clamping the panel 13 inside the base plate 12 and the support plate 11. After partial assembly is completed, as shown... Figure 15 As shown.

[0041] Specifically, when one or more trusses 14 are subjected to external forces such as gravity, tension, or impact, the trusses 14 will cause the toothed plates 6 to tend to slide outwards. This force is transmitted to the corresponding meshing plates 71 through the toothed plates 6. After being subjected to tension, the meshing plates 71 drive the rotating plates 74 to deflect through the connecting seats 72, causing the core rod 75 to tend to rotate. The rotation of the core rod 75 will synchronously drive the rotating plates 74, connecting seats 72, and meshing plates 71 in all other directions to move synchronously, distributing the load evenly to all other trusses 14, offsetting the overload tendency of a single truss 14, realizing automatic distribution of loads in four directions and self-balancing of forces, avoiding single-point overload loosening, and greatly improving the load-bearing stability and impact resistance of the nodes. Each rotating plate 74 has a fixed shaft 76 rotatably connected to its inner side. The fixed shaft 76 is fixedly connected to the inner side of the cross base 1. The fixed shaft 76 is used to cause the connecting seat 72 and the rotating plate 74 to rotate while ensuring that the load can be transmitted between the core rod 75 and the meshing plate 71 through the connecting seat 72 and the rotating plate 74. The force transmission path is always unique. The small rotation caused by the bending of the connecting seat 72 and the rotating plate 74 under load and thermal expansion and contraction can be freely released through the fixed shaft 76 without generating additional bending moment. The force transmission surface is always in uniform contact. The fixed shaft (rotation center) is the rotation center of the torque. The torque transmission path is clear, there is no eccentric additional load, and it avoids serious uneven load distribution, local stress concentration, and a sharp drop in force transmission stability.

[0042] In this embodiment, after the node connection is completed and put into use, if the truss 14 in a certain direction is suddenly subjected to a large tensile force or impact force, the truss 14 will immediately drive the corresponding linkage plate 2 and toothed plate 6 to slide outward. This outward tensile force will be transmitted to the corresponding meshing plate 71 through the teeth. The meshing plate 71 is pulled outward and moves outward, pulling the corresponding rotating plate 74 around the fixed axis 76 through the connecting seat 72. After the rotating plate 74 deflects, it will drive the core rod 75 to rotate. Since the core rod 75 is connected to the rotating plates 74 in all four directions, this rotational tendency will be transmitted synchronously to the core rod 75. The rotating plates 74 in the other three directions simultaneously generate a deflection tendency, driving the corresponding connecting seats 72 to move. This causes the trusses 14 in the other three directions to be driven to evenly distribute the load, automatically offsetting the overload tension of a single truss 14, preventing a single truss 14 from being pulled off due to excessive force, which would cause the entire truss to fall apart. This achieves automatic and even distribution of stress at the nodes, significantly improving the overall impact resistance of the truss. Moreover, the entire process is completed automatically by the mechanical structure, with fast response speed, high reliability, and reduced maintenance costs.

[0043] Specifically, the unlocking component 9 includes a clutch seat 91 and a chuck 92 rotatably connected to the inner side of the cross base 1. The clutch seat 91 and the chuck 92 are fixedly connected. Each engagement plate 71 has a separation rod 93 fixed at both ends along the axial direction of the cross base 1. The separation rod 93 is located inside the chuck 92. The clutch seat 91 has a clutch groove 94 through it at the end away from the chuck 92. An elastic element 96 is fixed inside the fastening rod 10. A rotating rod 97 is fixedly connected to the other end of the elastic element 96. A clutch plate 95 is fixed at the end of the rotating rod 97 near the clutch seat 91. The elastic element 96 is used to ensure that the clutch plate 95 is separated from the clutch groove 94 under no external force. An elastic element 5 is fixed inside the four ends of the cross base 1. The other end of each elastic element 5 is fixedly connected to the side of the linkage plate 2 near the axis of the cross base 1. The elastic element 5 is used to push the linkage plate 2 to reset after the truss 14 is moved out.

[0044] In this embodiment, when it is necessary to disassemble the truss and remove the truss member 14, simply press the rotating rod 97. This causes the rotating rod 97 to compress the elastic element 96 while simultaneously pushing the clutch plate 95 into the clutch groove 94 of the clutch seat 91. At this time, rotating the rotating rod 97 will cause the clutch seat 91 and the chuck 92 to rotate synchronously. After the chuck 92 rotates, it will push the inner separating rod 93. Under the mutual cooperation of the arc groove of the chuck 92 and the vertical hole of the cross base 1, the separating rod 93 causes the four meshing plates 71 to compress the elastic element 73 simultaneously and retract, disengaging from the toothed plate 6. After the toothed plate 6 is unrestrained, the elastic element 5 will push the linkage plate 2 to reset outward. During the reset process of the linkage plate 2, the connecting rod 21 drives the locking rod 22 to move synchronously. The clamping plate 3 and the fixed plate 4 automatically release their grip on the truss 14, eliminating the need to pry and disassemble each member individually. Unlocking can be completed with a single click, significantly improving disassembly efficiency. Workers can easily pull the truss 14 out of the cross base 1. The entire disassembly process does not require additional hammering or force application, nor does it require the removal of special fasteners. The disassembly operation is more convenient than traditional structures. The disassembled node structure and truss 14 can be completely recycled and reused. Compared with traditional welded nodes or one-time riveted nodes, the reusable feature greatly reduces engineering costs and meets the requirements for lightweight reusable materials. It avoids the problem of easily damaging members and nodes during the disassembly of traditional structures, and better meets the lightweight use requirements for reusable materials.

[0045] When it is necessary to disassemble the truss and remove the panel 13, simply reverse the fastening rod 10 according to the workflow. The fastening rod 10 will drive the support plate 11 to move away from the bottom plate 12 through the meshing action. After the support plate 11 loses the inward clamping force, the panel 13 can be easily pulled out from between the support plate 11 and the bottom plate 12.

[0046] Working principle: When installing the truss 14, first align the truss 14 with the corresponding end of the cross base 1, and push the truss 14 inward. The end of the truss 14 will push the linkage plate 2 to move towards the center of the cross base 1. The linkage plate 2 drives the connecting rod 21 and the clamping rod 22 to move. The clamping rod 22, in conjunction with the inclined holes of the clamping plate 31 and the sliding plate 41, drives the clamping plate 3 and the fixed plate 4 to slide towards the truss 14. During the sliding of the linkage plate 2, the wedge-shaped engagement between the toothed plate 6 and the meshing plate 71 will push the meshing plate 71 to compress the elastic element 2 73 and retract it, allowing the linkage plate 2 and the toothed plate 6 to move smoothly inward until the four side walls of the end of the truss 14 are clamped by the clamping plate 3 and the fixed plate 4. At this time, release the truss 14, and the elastic element 2 73 will immediately push the meshing plate 71. Re-engage the toothed plate 6 into the toothed groove, locking the toothed plate 6 and the linkage plate 2 in one direction to prevent them from sliding outward. At this point, the initial fixing of the single truss 14 is completed. Regardless of whether the cross-sectional size of the inserted truss 14 is too large or too small, the clamping plate 3 and the fixed plate 4 can adaptively retract and clamp within the sliding range without the need for additional parts replacement. The adaptability is better than that of traditional fixed-size node structures. After the workers assemble the truss 14 into a truss according to actual needs, they place the corresponding panel 13 in the corresponding positions of the base plate 12 and the support plate 11 according to the workflow. Then, rotate the fastening rod 10 clockwise. The fastening rod 10 drives the support plate 11 to move closer to the base plate 12 through the meshing action, clamping the panel 13 inside the base plate 12 and the support plate 11. After partial assembly, as shown... Figure 15 As shown.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An assembly node structure for a lightweight reusable material truss, comprising a cross-shaped base, characterized in that: The four ends of the cross base are internally connected to a linkage plate, and each linkage plate is slidably connected to a clamping plate and a fixed plate on its four sides. Each linkage plate is fixed with a toothed plate on the side closest to the axis of the cross base. A linkage locking part is provided on the inner side of the cross base, and an unlocking part is provided on the outer side of the linkage locking part. A base plate is fixed on one side of the cross base, and a fastening rod is rotatably connected to the inner side of the base plate. A support plate is provided on the outer side of the fastening rod. The linkage locking part includes a meshing plate that is slidably engaged with the inner side of the cross base. The meshing plate and the cross base are connected by an elastic element. A core rod is rotatably connected to the inner side of the cross base, and the core rod is collinear with the cross base. A rotating plate is rotatably connected to the outer side of the core rod. A connecting seat is slidably engaged with one side of the rotating plate. The connecting seat is rotatably connected to the meshing plate. The meshing plate and the elastic element cooperate to restrict the unidirectional movement of the toothed plate, thereby fixing the linkage plate. The linkage plate cooperates with the fixed plate and the clamping plate to hold the truss. When a single or multiple trusses are subjected to external force, the trusses will drive the toothed plate to slide outward. This force is transmitted through the toothed plate to the corresponding meshing plate, causing the core rod to rotate. The rotation of the core rod will synchronously drive the rotating plate, connecting seat, and meshing plate in all other directions to move synchronously, so as to evenly distribute the load.

2. The assembly node structure of the lightweight reusable material truss according to claim 1, characterized in that: Each of the four inner ends of the cross base is fixed with an elastic element. The other end of each elastic element is fixedly connected to the side of the linkage plate near the axis of the cross base. The elastic element is used to push the linkage plate to reset after the truss is moved out.

3. The assembly node structure of the lightweight reusable material truss according to claim 1, characterized in that: Each of the four sides of the linkage plate is fixed with a set of connecting rods, with two connecting rods forming a set, and a locking rod fixed to the other end of each connecting rod.

4. The assembly node structure of the lightweight reusable material truss according to claim 3, characterized in that: Two clamping plates and two sets of fixed plates are slidably engaged on the inner side of each end of the cross base. The two clamping plates and two sets of fixed plates are staggered and perpendicular to each other. Each clamping plate has a clamping plate fixed on the side closest to the axis of the cross base. The two fixed plates in the same group have sliding plates fixed on the sides away from each other. The sliding plates and clamping plates are slidably engaged on the outside of the clamping rod. The clamping plates, sliding plates and clamping rods can move the clamping plates and fixed plates toward the axis of the linkage plate to clamp the truss.

5. The assembly node structure of the lightweight reusable material truss according to claim 1, characterized in that: Each of the rotating plates is rotatably connected to a fixed shaft on its inner side. The fixed shaft is fixedly connected to the inner side of the cross base. The fixed shaft is used to cause the connecting seat and the rotating plate to rotate while ensuring that the load can be transmitted between the core rod and the meshing plate through the connecting seat and the rotating plate, so as to avoid serious uneven load distribution, local stress concentration, and a sharp drop in force transmission stability.

6. The assembly node structure of the lightweight reusable material truss according to claim 1, characterized in that: The unlocking mechanism includes a clutch seat and a chuck rotatably connected to the inside of the cross base. The clutch seat and the chuck are fixedly connected. Each engagement plate has a release rod fixed at both ends along the axis of the cross base. The release rod is located inside the chuck.

7. The assembly node structure of the lightweight reusable material truss according to claim 6, characterized in that: The clutch seat has a clutch groove through one end away from the chuck. An elastic element three is fixed inside the fastening rod. A rotating rod is fixedly connected to the other end of the elastic element three. A clutch plate is fixed to one end of the rotating rod near the clutch seat. The elastic element three is used to ensure that the clutch plate separates from the clutch groove under no external force.

8. The assembly node structure of the lightweight reusable material truss according to claim 1, characterized in that: The support plate is threaded to the outside of the fastening rod, and the panel is clamped between the support plate and the base plate.

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