阅读说明：本技术 一种由连续线材绕制的三维点阵结构 (Three-dimensional lattice structure wound by continuous wires ) 是由 刘刚 翟光涛 张正亮 张甲瑞 于 2020-05-21 设计创作，主要内容包括：本发明公开了一种由连续线材绕制的三维点阵结构,包括连续线材和缠绕而成的节点,多个节点沿横向构成横节点组,横节点组沿纵向构成节点阵列面,相邻的两个横节点组中,由三个或四个节点组成节点单元；节点阵列面设置有多层,相互间隔的两个节点阵列面上的节点单元相互对应,相互对应的节点单元与二者之间的一个节点构成胞体单元；连续线材包括沿贯穿节点阵列面的方向依次连接胞体单元的第一连续线材,胞体单元上,第一连续线材依次绕过第一节点、中间节点和与第一节点相对应的第二节点；在节点阵列面的横纵方向上,绕过相邻两个胞体单元之间的共有节点处的第一连续线材相互缠绕。本发明具有结构设计合理,连接简洁,整体连接强度高等优点。(The invention discloses a three-dimensional lattice structure wound by continuous wires, which comprises the continuous wires and nodes formed by winding, wherein a plurality of nodes form transverse node groups along the transverse direction, the transverse node groups form a node array surface along the longitudinal direction, and three or four nodes form a node unit in two adjacent transverse node groups; the node array surface is provided with a plurality of layers, the node units on two node array surfaces which are mutually spaced correspond to each other, and the mutually corresponding node units and one node between the two node units form a cell body unit; the continuous wire comprises a first continuous wire which is sequentially connected with the cell body unit along the direction penetrating through the node array surface, and the first continuous wire sequentially bypasses the first node, the middle node and a second node corresponding to the first node on the cell body unit; in the transverse and longitudinal directions of the node array surface, the first continuous wires which bypass the common nodes between two adjacent cell units are mutually wound. The invention has the advantages of reasonable structural design, concise connection, high integral connection strength and the like.)

1. The three-dimensional lattice structure wound by continuous wires is characterized by comprising the continuous wires (1) and nodes (2) formed by the continuous wires (1) in a mutually staggered or wound mode in space, wherein on the same plane, a plurality of the nodes (2) are arranged in the transverse direction to form a transverse node group (3), and a plurality of the transverse node groups (3) are arranged in the longitudinal direction to form a node array surface (4); in any two adjacent transverse node groups (3) on the node array surface (4), two adjacent nodes on one transverse node group (3) and one node or two adjacent nodes on the other transverse node group (3) form a triangular or quadrilateral node unit (5); the node array surfaces (4) are arranged in a plurality of layers in parallel, the node units (5) on the two node array surfaces (4) on two sides of any one node array surface (4) correspond to each other, the nodes on the two corresponding node units (5) correspond to each other one by one, and the two corresponding node units (5) and one node (2) on the node array surface (4) between the two node units form a cell body unit (6); the continuous wires (1) comprise first continuous wires (1a) which sequentially connect the cell units (6) along a direction penetrating through the node array surface (4), and on any cell unit (6), any first continuous wire (1a) sequentially bypasses a first node (2a) on one node unit (5), a middle node (2b) positioned in the middle and a second node (2c) on the other node unit (5), the middle node (2b) is positioned outside the connection line of the first node (2a) and the second node (2c), so that the first continuous wires (1a) are connected in the cell units (6) in a V shape; the first continuous wires (1a) passing around a common node between two adjacent cell units (6) are mutually wound in the transverse and longitudinal directions of the node array face (4) to form the node (2).

2. The three-dimensional lattice structure wound from continuous wires according to claim 1, wherein the node array planes (4) of two adjacent layers are relatively offset in the lateral direction or/and the longitudinal direction, and the projection of the middle node (2b) of the cell unit (6) located at the middle part is located in any node unit (5) on the cell unit (6) in the direction perpendicular to the node array planes (4).

3. The three-dimensional lattice structure wound by continuous wires according to claim 1, wherein the continuous wires (1) further comprise a second continuous wire (1b) passing through the node array plane (4) along a straight line, and the cell units (6) are sequentially arranged in plural along the direction of the second continuous wire (1 b); on any one of the cell units (6), the second continuous wire (1b) sequentially passes through two nodes corresponding to each other on the two node units (5); the first continuous wire (1a) passes around the second continuous wire (1b) at a node where the second continuous wire (1b) passes through.

4. The three-dimensional lattice structure wound of continuous wires according to claim 1, wherein the continuous wires (1) further comprise a second continuous wire (1b) passing through the node array plane (4) in a straight line, the cell units (6) are sequentially arranged in plural in the direction of the second continuous wire (1b), and in this direction, the second continuous wire (1b) sequentially passes through the intermediate nodes (2b) in the middle of each cell unit which are connected with each other, and the first continuous wire (1a) bypasses the second continuous wire (1b) at the nodes through which the second continuous wire (1b) passes.

5. The three-dimensional lattice structure wound by continuous wires according to claim 1, wherein the continuous wires (1) further comprise a third continuous wire (1c) arranged on the node array plane (4) in a straight line sequentially passing through the nodes, the third continuous wire (1c) being arranged in plurality in parallel with each other on the node array plane (4); the first continuous wire (1a) passes around the third continuous wire (1c) at a node through which the third continuous wire (1c) passes.

6. The three-dimensional lattice structure wound by continuous wires according to claim 5, wherein the node units (5) are generally quadrangular, and at least one of the node array surfaces (4) of any two adjacent node array surfaces (4) is provided with the third continuous wire (1c), the third continuous wires (1c) are staggered along the transverse direction and the longitudinal direction of the node array surface (4) and intersect at a node in a cross manner, and the first continuous wire (1a) is bypassed at the intersection of the cross of the third continuous wires (1c) which are staggered in the transverse direction and the longitudinal direction.

7. The three-dimensional lattice structure wound by continuous wires according to claim 5, wherein the node units (5) are triangular as a whole, the node array face (4) has the third continuous wires (1c) linearly arranged along three sides of the node units (5), respectively, and the first continuous wire (1a) is wound around the intersection of two third continuous wires (1c) which are staggered with each other at a node.

8. A three-dimensional lattice structure wound from continuous wires according to claim 1, characterized in that all the first continuous wires (1a) passing around any node point are integrally twisted at the node point about an axis passing through the node array plane (4).

9. The three-dimensional lattice structure wound by continuous wires according to any one of claims 1 to 4, wherein the node units (5) are quadrilateral in shape as a whole, and two first continuous wires (1a) are arranged in any cell unit (6), one ends of the two first continuous wires (1a) are respectively connected to two diagonal nodes of one node unit (5), and after being mutually wound at the middle node, the other ends of the two first continuous wires are respectively connected to two diagonal nodes of another node unit (5), so that the projection of the first continuous wires (1a) in any cell unit (6) in the direction vertical to the node unit (5) is in 'x' intersection.

10. The three-dimensional lattice structure wound by continuous wires according to claim 6, wherein there are two first continuous wires (1a) in any of the cell units (6), one end of each of the two first continuous wires (1a) is connected to two diagonal nodes of one node unit (5), and after being wound around each other at an intermediate node, the other end of each of the two first continuous wires (1a) is connected to two diagonal nodes of another node unit (5), and the nodes connected to the two ends of one first continuous wire (1a) of any of the cell units (6) correspond to each other.

Technical Field

The invention relates to the technical field of lattice materials, in particular to a three-dimensional lattice structure wound by continuous wires.

Background

In general, metal foams are known as typical cellular lightweight structures. The metal foam is manufactured by generating bubbles (closed cells) inside a liquid or semi-solid metal or by casting the metal into a mold made of a foaming resin (open cells).

However, these metal foams have relatively poor mechanical properties, such as strength and stiffness. In addition, it cannot be widely used in practice except for special purposes such as the space industry or the aviation industry due to its high manufacturing cost.

As an alternative to the above-mentioned metal foams, open cell lightweight structures with periodic lattice trusses have been developed. The open cell lightweight structure is designed by precise mathematical and mechanical analysis to have optimal strength and stiffness and thus good mechanical properties. The invention patent "three-dimensional lattice light structure directly knitted with continuous wires and manufacturing method thereof" described in chinese patent document, application No. 200480032465X, discloses a lattice light structure in which six directional wire groups cross each other at an angle of 60 or 120 degrees in a three-dimensional space, thereby constructing a structure having good mechanical properties such as strength, rigidity, etc. similar to a standard Octet or Kagome truss. However, the continuous wires in the structure extend along a straight line and are mutually crossed at the node, and the continuous wires are completely connected with each other by welding or glue, so that the integral structure is limited by the connection strength of the welding or the glue, and the integral structure is complex and is not easy to simplify according to the use requirement.

Disclosure of Invention

Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide a structural design is reasonable, connects succinctly, and the three-dimensional lattice structure of whole joint strength height by continuous wire rod coiling.

In order to solve the technical problems, the invention adopts the following technical scheme:

a three-dimensional lattice structure wound by continuous wires is characterized by comprising the continuous wires and the continuous wires which are mutually arranged in spaceStaggered or woundThe formed nodes are in the sameOn the plane, a plurality of nodes are arranged along the transverse direction to form a transverse node group, and a plurality of transverse node groups are arranged along the longitudinal direction to form a node array plane; in any two adjacent transverse node groups on the node array surface, two adjacent nodes on one transverse node group and one node or two adjacent nodes on the other transverse node group form a triangular or quadrilateral node unit; the plurality of node array surfaces are arranged in a plurality of layers in parallel, the node units on two node array surfaces positioned on two sides of any one node array surface correspond to each other, the nodes on the two corresponding node units correspond to each other one by one, and the two corresponding node units and one node positioned on the node array surface between the two corresponding node units form a cell body unit; the continuous wires comprise first continuous wires which are sequentially connected with the cell units along the direction penetrating through the node array surface, and on any cell unit, any first continuous wire sequentially bypasses a first node on one node unit, a middle node positioned in the middle and a second node on the other node unit, the middle node is positioned outside the connection line of the first node and the second node, so that the first continuous wires are connected in the cell units in a V shape; the first continuous wires which bypass the common node between the adjacent two cell units are mutually wound to form the node in the transverse and longitudinal directions of the node array surface.

In the structure, two node array surfaces positioned at two sides of any node array surface are two layers of node array surfaces which are mutually spaced, and the cell body unit is formed by the node units which are mutually corresponding on the two layers of node array surfaces which are mutually spaced and one node on the node array surface between the two layers of node array surfaces, namely, each cell body unit occupies three layers of node array surfaces which are sequentially adjacent in space, wherein the node positioned on the node array surface at the middle layer is a middle node of the cell body unit, and the other two layers of node array surfaces are respectively provided with one node unit which is mutually corresponding; because the node array surfaces are arranged in parallel with each other in multiple layers, each node unit and the corresponding node units on two sides of the node unit can form a cell unit, namely, the node unit can be shared by two cell units which are arranged in a linking way in the direction of the node array surface, namely, the node unit can form a cell unit with the node units and the middle nodes on the two layers of node array surfaces on the upper side of the node unit, and can form another cell unit with the node units and the middle nodes on the two layers of node array surfaces on the lower side of the node unit, and the cell units are shared by the node units and the middle nodes; thus, the second node on one cell unit may also be the first node on the other cell unit, and since the first continuous wire connection in a single cell unit is "doglegged", the first continuous wire is wound in a zigzag pattern in the order of the first node, the intermediate node, and the second node in the direction across the array of nodes.

In addition, each node unit is sequentially and adjacently arranged in the transverse direction and the longitudinal direction of the node array surface, and a common node is arranged between every two adjacent node units, so that the cell units are also sequentially and adjacently arranged in the transverse direction and the longitudinal direction of the node array surface, and the common node is arranged between every two adjacent cell units, therefore, first continuous wires which bypass the common node on the cell units are mutually wound, the cell units in the transverse direction or the longitudinal direction of the node array surface can be mutually connected into a whole, and a reliable three-dimensional lattice structure is formed.

Further, the node array surfaces of two adjacent layers are relatively offset in the transverse direction or/and the longitudinal direction, and in the direction perpendicular to the node array surfaces, the projection of the middle node positioned in the middle of the cell body unit is positioned in any node unit on the cell body unit.

Therefore, the projection of the middle node on the vertical node array surface is enabled to fall in the node unit, the included angle between the connecting line between any node and the middle node on the node unit and the node array surface can be increased, and the supporting strength in the direction vertical to the node array surface is increased. In addition, the winding difficulty of the continuous wire can be reduced by the arrangement.

Furthermore, the continuous wire further comprises a second continuous wire which penetrates through the node array surface along a straight line, and a plurality of cell units are sequentially arranged in a joint manner along the direction of the second continuous wire; on any cell body unit, the second continuous wire sequentially passes through two nodes corresponding to each other on the two node units; the first continuous wire passes around the second continuous wire at a node through which the second continuous wire passes.

Furthermore, the continuous wire further comprises a second continuous wire which penetrates through the node array surface along a straight line, the cell units are sequentially arranged in a connected mode along the direction of the second continuous wire, in the direction, the second continuous wire sequentially penetrates through middle nodes in the middle of the cell units which are connected with each other, and the first continuous wire bypasses the second continuous wire at the nodes through which the second continuous wire penetrates.

Like this, through the second continuous wire rod that the straight line runs through for first continuous wire rod is more stable in the node coiling, simultaneously, increases the second continuous wire rod, can also increase whole three-dimensional lattice structure's intensity.

Furthermore, the continuous wires further comprise third continuous wires which sequentially penetrate through the nodes along straight lines on the node array surface, and a plurality of the third continuous wires are arranged on the node array surface in parallel; the first continuous wire passes around the third continuous wire at a node through which the third continuous wire passes.

In this way, the strength of the three-dimensional lattice structure can be increased in the third continuous wire direction.

Furthermore, the node units are quadrilateral in whole, and are adjacent to each other randomly, at least one of the node array surfaces is provided with the third continuous wire, the third continuous wire is arranged along the node array surfaces in a transverse and longitudinal staggered manner and is crossed at the node, and the first continuous wire bypasses the crossed intersection of the third continuous wire which is staggered transversely and longitudinally.

Furthermore, the node unit is overall triangular, the third continuous wires linearly arranged along three sides of the node unit are arranged on the node array surface, and the first continuous wire is wound around the intersection of the two third continuous wires which are staggered with each other at the node.

Further, all of the first continuous wires that are routed around any one node point are integrally twisted at that node point about an axis that intersects the node array plane.

In this way, the bonding strength of the first continuous wire at the node point can be increased.

Furthermore, the node units are quadrilateral in whole, two first continuous wires are arranged in any cell body unit, one ends of the two first continuous wires are connected to two diagonal nodes of one node unit respectively, after the two first continuous wires are wound around each other at the middle node, the other ends of the two first continuous wires are connected to two diagonal nodes of the other node unit respectively, and projections of the first continuous wires in any cell body unit in the direction perpendicular to the node units are crossed in an x shape.

Preferably, two first continuous wires are arranged in any cell unit, one ends of the two first continuous wires are respectively connected to two diagonal nodes of one node unit, after the two first continuous wires are mutually wound at middle nodes, the other ends of the two first continuous wires are respectively connected to two diagonal nodes of the other node unit, and the nodes connected to the two ends of one first continuous wire of any cell unit correspond to each other.

In conclusion, the invention has the advantages of reasonable structural design, concise connection, high overall connection strength and the like.

Drawings

FIG. 1 is a schematic view of example 1.

FIG. 2 is a schematic view of example 2.

FIG. 3 is a schematic view of example 3.

FIG. 4 is a schematic view of example 4.

FIG. 5 is a schematic view of example 5.

FIG. 6 is a schematic view of example 6.

FIG. 7 is a schematic view of example 7.

FIG. 8 is a schematic view of example 8.

Fig. 9 to 11 are schematic views of example 9.

FIG. 12 is a schematic view of example 10.

FIG. 13 is a schematic view of example 11.

FIG. 14 is a schematic view of example 12.

FIGS. 15 and 16 are schematic views of example 13.

FIG. 17 is a schematic view of example 14.

FIG. 18 is a schematic structural view of a cell unit of example 4.

Fig. 19 is a schematic structural view of fig. 18 with a second continuous wire added.

FIG. 20 is a schematic structural view of a cell unit of example 1.

FIG. 21 is a schematic structural view of a somal unit in example 8.

Detailed Description

The present invention will be described in further detail with reference to examples.