An integral tensioned variable three-bar structural unit

Abstract

This invention provides an integral tensioned variable three-bar structural unit, relating to the field of integral tensioned structure technology. The integral tensioned variable three-bar structural unit includes three pressure bars and multiple cables, forming a basic tensioning unit. Each pressure bar is equipped with a set of wing bars, each set of wing bars including two wing bars. One end of each wing bar is connected to the pressure bar, and the other end extends away from the basic tensioning unit. The two wing bars on each pressure bar are not coplanar with the pressure bar itself. The wing bar end away from the pressure bar is called the wing bar end, and the end of the pressure bar is called the pressure bar end. Any wing bar end or any pressure bar end can serve as a connection point for the tensioned membrane. The integral tensioned variable three-bar structural unit provided by this invention increases morphological variables and can change the stretched shape of the tensioned membrane.

Description

Technical Field

[0001] This invention relates to the field of integral tension structure technology, and in particular to an integral tension variable three-bar structure unit. Background Technology

[0002] An integrally tensioned structure is defined as a self-supporting, self-stressed spatial grid structure consisting of a set of discontinuous compression members and a set of continuous tension units. The stiffness of this structure is provided by the balanced prestress between the tension and compression units. Before the application of prestress, the structure has almost no stiffness, and the magnitude of the initial prestress plays a decisive role in the shape and stiffness of the structure.

[0003] Common integral tensioned structural units are classified into 3-member, 4-member, and 5-member unit types based on the number of members. Integral tensioned structural units are the fundamental components and basic building blocks for developing complex structural systems such as cable domes.

[0004] The existing three-bar structural units result in a monotonous structural form, with the units themselves being simple and difficult to innovate in terms of form. The structural members have six endpoints, and the bar heads serve as the fixed ends of the cables. In composite tensile membrane structures, the connection endpoints of the membrane structure coincide with the bar heads, resulting in a triangular prism-shaped embedded tensioning mold form that is restrained and lacks expansiveness. Summary of the Invention

[0005] The purpose of this invention is to provide an integral tensioned variable three-bar structure unit to solve the problems existing in the prior art, increase morphological variables, and change the stretched shape of the tensioned membrane.

[0006] To achieve the above objectives, the present invention provides the following solution:

[0007] This invention provides an integral tensioned variable three-bar structure unit, including three pressure bars and multiple cables. The three pressure bars and multiple cables form a basic tensioning unit. Each pressure bar is provided with a set of wing bars, and each set of wing bars includes two wing bars. One end of each wing bar is connected to the pressure bar, and the other end extends away from the basic tensioning unit. The two wing bars on each pressure bar and the pressure bar are not coplanar. The wing bar end away from the pressure bar is the wing bar end, and the end of the pressure bar is the pressure bar end. Any wing bar end and any pressure bar end can serve as the connection point of the tensioned membrane.

[0008] Preferably, the cable can be tensioned between any two of the wing rod ends, and the cable can also be tensioned between any one of the wing rod ends and any one of the pressure rod ends.

[0009] Preferably, the wing rod is connected to the pressure rod via a four-way adapter. The four-way adapter includes a main sleeve and two auxiliary sleeves. The main sleeve is sleeved on the pressure rod. One end of the auxiliary sleeve is fixedly connected to the main sleeve, and the other end extends away from the main sleeve. One end of the wing rod is inserted and fixed in the auxiliary sleeve.

[0010] Preferably, the four-way adapter is fixedly mounted on the pressure rod.

[0011] Preferably, the four-way adapter is slidably mounted on the pressure rod.

[0012] The present invention achieves the following technical effects compared to the prior art:

[0013] 1. The integral tensioned variable three-bar structure unit provided by the present invention increases the morphological variables of the integral tensioned variable three-bar structure unit by adding wing rods to the compression rod to form a composite rod.

[0014] 2. The integral tensioning variable three-bar structure unit provided by the present invention can form more connection endpoints of non-coplanar tensioned membranes, and can select to tension more tensioned membranes of different shapes.

[0015] 3. The overall tensioned variable three-bar structure unit provided by the present invention can adjust the stretching shape of the tensioned membrane by adjusting the ratio of the wing rods and the pressure rods. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the combined rod consisting of a pressure rod and two wing rods in an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the three combined rods in an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the overall tensioned variable three-bar structure unit in an embodiment of the present invention;

[0020] In the diagram: 1-Pressure rod; 11-Pressure rod end; 2-Wing rod; 21-Wing rod end; 3-Four-way adapter; 4-End cap; 6-Cable. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] The purpose of this invention is to provide an integral tensioned variable three-bar structure unit to solve the problems existing in the prior art, increase morphological variables, and change the stretched shape of the tensioned membrane.

[0023] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] This invention provides an integral tensioned variable three-bar structural unit, such as... Figures 1-3 As shown, it includes three pressure rods 1 and multiple cables 6, which form a basic tensioning unit. Each pressure rod 1 is provided with a set of wing rods 2, and each set of wing rods 2 includes two wing rods 2. One end of the wing rod 2 is connected to the pressure rod 1, and the other end extends in a direction away from the basic tensioning unit. The two wing rods 2 on each pressure rod 1 and the pressure rod 1 are not coplanar. The wing rod 2 that is away from the pressure rod 1 is the wing rod end 21, and the end of the pressure rod 1 is the pressure rod end 11. Any wing rod end 21 and any pressure rod end 11 can be used as the connection point of the tension membrane.

[0025] The integral tensioned variable three-bar structure unit provided by this invention, compared with the original basic unit, uses nodes such as four-way adapters 3 on the pressure bar 1 to additionally connect two wing bars 2 to form a combined bar. This combined bar is repeated three times and rotated to a suitable shape angle, and then tightened and positioned using cables 6.

[0026] The four-way adapter 3 includes a main sleeve and two auxiliary sleeves. The main sleeve is sleeved on the pressure rod 1. One end of the auxiliary sleeve is fixedly connected to the main sleeve, and the other end extends away from the main sleeve. One end of the wing rod 2 is inserted and fixed in the auxiliary sleeve.

[0027] The four-way adapter 3 can be fixedly mounted on the pressure rod 1 or slidably mounted on the pressure rod 1. When the four-way adapter 3 is slidably mounted on the pressure rod 1, a locking mechanism is required to fix the position of the four-way adapter 3. For example, a threaded hole is opened on the side wall of the main sleeve, and a bolt is screwed in to press the bolt against the pressure rod 1 to fix the four-way adapter 3. In this embodiment, the positional relationship between the wing rod 2 and the pressure rod 1 can be changed by changing the position of the four-way adapter 3 relative to the pressure rod 1, thereby adjusting the shape of the overall tensioned variable three-bar structure unit.

[0028] Of course, the connection between the wing rod 2 and the pressure rod 1 is not limited to the use of a T-joint. Any existing technology that can connect and combine the two rods can be applied to this invention.

[0029] The overall tensioned variable three-bar structure unit provided by the present invention increases the number of tension membrane connection endpoints and makes the tension membrane connection endpoints expand outward to overcome the defect of tension membrane inward in the original structure, so as to make the tension membrane stretch.

[0030] In some embodiments, in order to increase the deformation form of the overall tensioned variable three-bar structure unit, the cable 6 can be tensioned between any two wing rod ends 21 in the overall tensioned variable three-bar structure unit provided in this embodiment, and the cable 6 can also be tensioned between any wing rod end 21 and any pressure rod end 11, so as to meet the requirement of tightening and positioning the pressure rod 1 and wing rod 2 after changing the form.

[0031] There are various ways to fix the cable 6 to the wing rod end 21 and the pressure rod end 11. For example, a radial through hole can be opened at the rod end, and the end of the cable 6 can be passed through the through hole and then tied. In this invention, the method of fixing the cable 6 to the rod end can adopt any structure in the prior art.

[0032] In this invention, end caps 4 are provided at the top and bottom of the pressure rod 1. The bottom end cap 4 is longer to support the entire tensioned three-bar structure unit suspended at a certain height.

[0033] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A monolithic tensioned three-bar structure unit, comprising three compression bars and multiple tension cables, wherein the three compression bars and multiple tension cables form a basic tensioning unit, characterized in that: Each pressure bar is provided with a set of wing rods, and each set of wing rods includes two wing rods. One end of each wing rod is connected to the pressure bar, and the other end extends away from the tensioning unit. The two wing rods on each pressure bar and the pressure bar itself are not coplanar. The end of each wing rod away from the pressure bar is called the wing rod end, and the end of the pressure bar is called the pressure bar end. Any wing rod end and any pressure bar end can serve as the connection point of the tensioning membrane. The wing rods are connected to the pressure bar via a four-way adapter. The four-way adapter includes a main sleeve and two auxiliary sleeves. The main sleeve is sleeved on the pressure bar. One end of each auxiliary sleeve is fixedly connected to the main sleeve, and the other end extends away from the main sleeve. One end of each wing rod is inserted and fixed in the auxiliary sleeve. The four-way adapter is slidably mounted on the pressure bar.

2. The integral tensioned variable three-bar structure unit according to claim 1, characterized in that: The cable can be tensioned between any two of the wing rod ends, and the cable can also be tensioned between any one of the wing rod ends and any one of the pressure rod ends.

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