An auxiliary tool, design method, and application for rapidly constructing tensioned monolithic structures.

Abstract

This invention relates to an auxiliary tool, design method, and application for rapidly assembling a tensioned monolithic structure, comprising the following steps: determining the three-dimensional spatial position of the compression members in the tensioned monolithic structure; determining the center position of the member as the connection point of the auxiliary tool; using a connector as the central connection point among all connection points, connecting the central connection point to the other connection points; and setting clamping components at the other connection points. This invention provides a rapidly assembling tool adapted for specific tensioned monolithic structures, fully considering the issues of rapid installation and disassembly of connection points and the stress stability of various parts, resulting in a construction method that conforms to mechanical design principles and meets user habits.

Description

Technical Field

[0001] This invention belongs to the field of parts structure modeling and manufacturing, specifically involving an auxiliary tool, design method and application for quickly assembling tensioned integral structures. Background Technology

[0002] Tensile monolithic structures possess both the advantages of traditional rigid structures and the self-protective capabilities of flexible structures. These structures can utilize their own deformation to generate various structural configurations, and in the field of architecture, they can be used as basic structures to create variable-structure buildings, showing great development potential. Tensile monolithic structures have wide applications, such as the design of deployable mechanisms based on two-bar tensioned monolithic structures, the structural design of mobile origami robots based on tensioned monolithic structures, and jumping motion systems based on multi-stable tensioned monolithic structures. This spatial structural system has become one of the most cutting-edge topics in the field of spatial structures.

[0003] However, due to the low level of public understanding of the principles of tensioned monolithic structures, even the most basic and simple structures are difficult to assemble by hand. During the construction of tensioned monolithic structures, the complexity of the spatial structure means that each member is subjected to forces in different directions. This necessitates that instructors and students continuously ensure the spatial position of the members remains constant while simultaneously adding more members that need fixing, until the forces on all parts are balanced, forming a stable structure. Therefore, determining and constructing tools that enable the rapid assembly of tensioned monolithic structures becomes a crucial technical challenge. Summary of the Invention

[0004] In order to overcome the above-mentioned problems in the prior art, the present invention provides an auxiliary tool, design method and application for quickly building a tensioned integral structure, which is used to solve the above-mentioned problems in the prior art.

[0005] A design method for an auxiliary tool for quickly assembling a tensioned integral structure, the method comprising the following steps:

[0006] S1. Determine the three-dimensional spatial position of the compression members in the tensioned integral structure;

[0007] S2. Determine the center position of the rod as the connection point for the auxiliary tool;

[0008] S3. Take one of the connection points as the central connection point, and use a connector to connect the central connection point to the other connection points;

[0009] S4. Clamping elements are provided at each of the other connection points.

[0010] In addition to the aspects described above and any possible implementations, a further implementation is provided in which the diameter d1 of the compression member is 8 mm.

[0011] In addition to the aspects and any possible implementations described above, a further implementation is provided in which, when all connection points are on the same plane, a shaft is used to connect the points from the center; when all connection points are on different planes, a rib is selected to be matched with a shaft for connection according to the angle of the formed plane.

[0012] In addition to the aspects and any possible implementations described above, a further implementation is provided in which the clamping member is a spherical structure with a diameter of 2d1, and a groove is provided on the spherical structure for clamping the compressed rod.

[0013] In addition to the aspects described above and any possible implementation, a further implementation is provided in which the opening direction of the groove varies depending on the orientation of its connection point relative to the central connection point.

[0014] In addition to the aspects and any possible implementations described above, a further implementation is provided, which includes using fillets and ribs to connect the various connection points, the fillets being located at the connection between the clamp and the shaft or the rib, and at the outer right-angled edge of the rib.

[0015] In addition to the aspects and any possible implementations described above, a further implementation is provided in which, when there are three connection points, three cylinders are used as connectors to connect the various connection points, and a rib is added at the intersection of the three cylinders.

[0016] In addition to the aspects described above and any possible implementation, a further implementation is provided in which, when there are four connection points on the same plane, one of the connection points is located at the center and serves as the central connection point; a shaft structure is used as a connector to directly connect the three outer connection points to form a triangular frame, and then the central connection point is connected to any one of the midpoints of the triangular frame.

[0017] The present invention also provides an auxiliary tool for quickly assembling a tensioned integral structure, which is designed using the aforementioned design method.

[0018] The present invention also provides the application of the aforementioned auxiliary tool in the rapid construction of a tensioned integral structure, wherein the auxiliary tool can be completely extracted after the tensioned integral structure is constructed.

[0019] Beneficial effects of the present invention

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention discloses a design method for an auxiliary tool for rapidly assembling a tensioned integral structure, comprising the following steps: determining the three-dimensional spatial position of the compression members in the tensioned integral structure; determining the center position of the members as the connection point of the auxiliary tool; using a connector as the central connection point among all connection points, connecting the central connection point to the other connection points; and setting clamping components at the other connection points. This invention provides a rapidly assembling tool adapted for specific tensioned integral structures, fully considering the issues of rapid installation and disassembly of connection points and the stress stability of each part, resulting in a construction method that conforms to mechanical design principles and meets user habits. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the method flow of the present invention;

[0023] Figure 2 This is a schematic diagram of the auxiliary tool of the present invention having 6 connection points;

[0024] Figure 3 This is a schematic diagram showing that the auxiliary tool of the present invention has three connection points and a clearly defined center position;

[0025] Figure 4 This is a schematic diagram of the auxiliary tool of the present invention having four connection points;

[0026] Figure 5 This is a schematic diagram showing that the auxiliary tool of the present invention has three connection points and the center position is not clearly defined;

[0027] Figure 6 This is a schematic diagram of the auxiliary tool for constructing the tensioning integral structure of the present invention. Detailed Implementation

[0028] To better understand the technical solution of this invention, the content of this invention includes, but is not limited to, the specific embodiments described below. Similar technologies and methods should be considered within the scope of protection of this invention. To make the technical problems to be solved, the technical solutions, and advantages of this invention clearer, a detailed description will be provided below in conjunction with the accompanying drawings and specific embodiments.

[0029] It should be understood that the embodiments described in this invention are merely some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention.

[0030] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” as used in the embodiments of this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0031] like Figure 1 The diagram shown is a flowchart of the method of the present invention. The design method of the auxiliary tool for quickly assembling a tensioned integral structure of the present invention includes the following steps:

[0032] S1. Determine the three-dimensional spatial position of the compression members in the tensioned integral structure;

[0033] S2. Determine the center position of the rod as the connection point for the auxiliary tool;

[0034] S3. Take one of the connection points as the central connection point, and use a connector to connect the central connection point to the other connection points;

[0035] S4. Clamping elements are provided at each of the other connection points.

[0036] Preferably, the diameter d1 of the compression member is 8 mm.

[0037] Preferably, when all connection points are on the same plane, a shaft is used to connect each point from the center; when all connection points are on different planes, a rib is selected to match the shaft for connection according to the angle of the formed plane.

[0038] Preferably, the clamping member is a spherical structure with a diameter of 2d1, and a groove is provided on the spherical structure for clamping the pressure rod.

[0039] Preferably, the opening direction of the groove varies depending on the orientation of its connection point relative to the central connection point.

[0040] Preferably, the method includes using rounded corners and ribs to connect the various connection points, wherein the rounded corners are located at the connection between the clamp and the shaft or the rib, and at the outer right-angled side of the rib.

[0041] Preferably, when there are three connection points, three cylinders are used as connectors to connect each connection point, and a rib is added at the intersection of the three cylinders.

[0042] Preferably, when there are four connection points on the same plane, one of the connection points is located at the center and is designated as the central connection point; a shaft structure is used as a connector to directly connect the three outer connection points to form a triangular frame, and then the central connection point is connected to any one of the midpoints of the triangular frame.

[0043] Specifically, the present invention first determines the compression member in the tensioned overall structure. The length of the compression member is l: 120mm, with cross grooves at both ends. The conventional part is a cylinder with a diameter d1: 8mm, and the special part from 1 / 3 to 1 / 2 is a frustum with a top diameter d2: 5mm and a bottom diameter d3: 8mm, in its natural three-dimensional spatial position. Then, the center position of the member is determined, which is the auxiliary tool connection point. The structure is selected according to the different connection point positions: (1) When all connection points are on the same plane, a cylinder is used as a connector to connect each point from the center (when there is a connection point at the center or the center position is difficult to confirm, a point can also be selected from the axis of symmetry of the symmetrical figure formed by all connection points to connect each connection point or the connection point can be directly connected by a shaft). (2) When the connection points are not on the same plane, select a suitable rib to connect the shaft according to the angle of the plane formed; then determine to set a clamping part at the connection point. The clamping part is a spherical structure with a diameter of 2d1. A groove is set on the spherical structure to clamp the compressed rod. A groove with a diameter slightly smaller than the diameter of the rod is dug out on the spherical structure. Then determine the opening direction according to the relationship between the opening direction of the groove and the orientation of the connection point relative to the center connection point. Finally, add a rib according to the force direction when the auxiliary tool is used. For example, when the angle formed by the two shaft connection parts is greater than or equal to 90 degrees, add a rib between the two shafts and fillet. It is set at the connection between the clamping part and the shaft or rib, and the right angle side of the outer side of the rib.

[0044] The steps of this invention are as follows: Select a basic tensioning integral structure, and different auxiliary tools are made for different tensioning integral structures to assist in installation;

[0045] a) Locating the connection points: Determine the central connection points based on the spatial positions of all compressed rigid members. Allow the tensioned overall structure to remain in a natural state free from external forces. Determine the central connection points, i.e., the connection points between the auxiliary tools and the members, based on the positions of the two ends of each compressed member constituting the tensioned overall structure. For example... Figure 6 The circled area indicates the connection point between the six-bar tensioning structure and the auxiliary tools.

[0046] b) Determine the connection method of each point according to the relative position of the connection points, that is, select the structure of the connection points of the auxiliary tool. When all the determined connection points are on the same plane, determine one of the connection points as the central connection point. (1) The center position is obvious and does not coincide with the connection points. Use a cylinder with a diameter of (d1-2) mm to connect from the central connection point to each connection point, such as Figure 3 Connection method of the structure. (2) When the center position coincides with the connection point or the center position is not obvious and difficult to determine, directly connect the connection points with a cylinder of diameter (d1-2), such as Figure 4 The connection method of the structure; alternatively, a point can be selected on the axis of symmetry and connected to each connection point, such as... Figure 5 Connection method of the structure. (3) When the connection points are not on the same plane, connect the structural center (the center position of the shape formed by the connection points in space) to the connection points through the shaft, and connect all adjacent shafts through the ribs, such as Figure 2 The structure is connected in such a way that the center of the structure and 6 connection points form 6 axes, and adjacent axes are connected by ribs, which together make up 12 ribs.

[0047] c) Determine the spherical protective structure and arrange the slots at the connection point. A spherical structure with a diameter of 2d1 is installed at the connection point. The direction of the cylindrical opening on the spherical structure is determined based on the placement of the members. Simultaneously, the slot position of the spherical structure is on the outer side relative to the structure's center. Figure 2 For example, in its overall tensioned structure, the compression members are perpendicular to each other, the directions of the spherical cylindrical openings are also perpendicular to each other, and the slot positions are all on the outside relative to the center. Figure 3 For example, because the members in the overall tensioning structure are distributed in a spiral shape, the resultant force on each compression member is perpendicular to the member and points towards the center. The spherical openings are also distributed in a spiral shape, and the slots are located on the outside relative to the center.

[0048] d) Add fillets and ribs to increase structural stability. For cases where points are connected by cylinders, design ribs with a thickness of (d1 / 2-1) mm between adjacent cylinders. Figure 3 For example, three auxiliary ribs are designed between each cylindrical connecting rod to increase the stability of the auxiliary tool, and finally the auxiliary tool is obtained.

[0049] Figure 2 The image shows a quick-assembly auxiliary tool for a tensioned monolithic structure consisting of 6 members. Since it has many compression members and more than 3 connection points, a large number of ribs were chosen as the connection method for each point. The slots at the connection points are located on the outside relative to the center of the structure.

[0050] Figure 3 This is a quick-assembly auxiliary tool for a tensioned integral structure composed of three rods. The structure has only three connection points during construction. The center point of the equilateral triangle formed by the three points can be clearly determined, so three cylinders are used for connection. Secondly, considering the stability of the central connection, ribs are added at the intersection of the three cylinders to increase the stability of the parts. Finally, the slot structure is determined according to the relative position of the rods and the center of the structure.

[0051] Figure 4This is a quick splicing auxiliary tool for a tensioned integral structure composed of 4 rods. The structure has 4 connection points during construction, all of which are on the same plane, but one connection point occupies the central position. Therefore, an axial structure is used to directly connect the three outer connection points to form a triangular frame. Then, the midpoint of any side is connected to the center point of the structure. Ribs are then added to improve the stability of the tool. Finally, the slot structure is determined according to the relative position of the rods and the center of the structure.

[0052] Figure 5 This is a quick splicing auxiliary tool for a tensioned integral structure composed of three rods. There are only three connection points when the structure is built, but the center position is difficult to determine. However, the symmetry is strong, so a point on the axis of symmetry is selected to connect each spherical protective body. Secondly, considering the problem of the firmness of the central connection, a rib plate is added at the intersection of the three columns to increase the stability of the parts. Finally, the slot structure is determined according to the relative position of the rod and the center of the structure.

[0053] This invention also provides an auxiliary tool for quickly assembling a tensioned integral structure. This auxiliary tool is designed using the design method described in this invention, such as... Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown.

[0054] This invention also provides the application of the auxiliary tool according to the invention in the rapid construction of a tensioned integral structure, wherein the auxiliary tool can be completely withdrawn after the tensioned integral structure is constructed, such as... Figure 6 As shown in the diagram, the six compression members combined with rubber bands in the left diagram can be used to construct the six-bar tensioned overall structure in the right diagram. The middle part of each member is the auxiliary tool of this invention. The circled areas are the six connection points between the tool and the tensioned overall structure. After the tensioned overall structure is constructed, the auxiliary tool can be removed.

[0055] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A design method for an auxiliary tool for rapidly assembling a tensioned integral structure, characterized in that, The method includes the following steps: S1. Determine the three-dimensional spatial position of the compression members in the tensioned integral structure; S2. Determine the center position of the rod as the connection point for the auxiliary tool; S3. Take one point among all the connection points as the central connection point, and use a connector to connect the central connection point to all the other connection points. There are two cases for determining the central connection point: 1) When all connection points are on the same plane, use a cylinder as a connector to connect the points from the center. When there is a connection point at the center or the center position is difficult to determine, select a point on the axis of symmetry of the symmetrical figure formed by all connection points and connect it to each connection point, or directly connect the connection points with a shaft. 2) When the connection points are not on the same plane, select ribs to connect the shafts according to the angle of the formed planes; then determine to set a clamping component at the connection point. The clamping component is a spherical structure with a diameter of 2 times d1, where d1 is the cylindrical diameter of the compressed member, which is 8mm. A groove is set on the spherical structure to clamp the compressed member. A groove with a diameter slightly smaller than the diameter of the compressed member is carved out on the spherical structure. Then, determine the opening direction according to the relationship that the opening direction of the groove is the same as the orientation of the connection point relative to the center connection point; finally, add ribs according to the force direction when the auxiliary tool is used. Based on the relative positions of the connection points, the connection method of each point is determined, that is, the structure of the connection points of the auxiliary tool is selected. There are three cases. When all the determined connection points are on the same plane, one of the connection points is determined as the central connection point: 1) The center position is obvious and does not coincide with the connection point. A cylinder with a diameter of (d1-2) mm is used to connect from the center connection point to each connection point. 2) When the center position coincides with the connection point or the center position is not obvious and difficult to determine, directly connect each connection point with a cylinder with a diameter of (d1-2) mm; 3) When the connection points are not on the same plane, connect the structural center, that is, the center of the shape formed by the connection points in space, to the connection points through the axis, and connect all adjacent axis through the ribs. S4. Clamping elements are provided at each of the other connection points.

2. The design method of the auxiliary tool for rapidly assembling a tensioned integral structure according to claim 1, characterized in that, The opening direction of the groove varies depending on the orientation of its connection point relative to the central connection point.

3. The design method for auxiliary tools for rapidly assembling tensioned integral structures according to claim 1, characterized in that, When there are three connection points, three cylinders are used as connectors to connect each connection point, and a rib is added at the intersection of the three cylinders.

4. The design method of the auxiliary tool for rapidly assembling a tensioned integral structure according to claim 1, characterized in that, When there are four connection points on the same plane, one of the connection points is located in the center and is designated as the central connection point. A shaft structure is used as a connector to directly connect the three outer connection points to form a triangular frame. Then, the midpoint of any side of the triangular frame is connected to the central connection point.

5. An auxiliary tool for quickly assembling a tensioned integral structure, characterized in that, The auxiliary tool is designed using the design method described in any one of claims 1-4.

6. The application of the auxiliary tool according to claim 5 in the rapid construction of tensioned integral structures, characterized in that, The auxiliary tool can be completely removed after the overall tensioning structure is completed.

Images