A docking module mechanism for a reconfigurable truss

Abstract

The application provides a docking module mechanism for a reconfigurable truss, the main body of the truss is an aluminum profile (8) with a connecting piece two (7) at both ends. The connecting piece two (7) is square, one end of which is responsible for connecting the aluminum profile (8) and the other end is responsible for connecting the connecting piece one (6). The shaft sleeve (5) is cylindrical at the front end and has a cylindrical boss at the rear end, and the special shape is used for fixing and preventing sliding. The long fixed shaft (4) has a cylindrical and sawtooth-shaped structure at the front end, which is used for installation and prevents transverse and longitudinal sliding. The short fixed shaft (3) has a hollow structure with a sawtooth shape, which is used for installation with the long fixed shaft (4). The bolt shaft sleeve (2) has internal threads at both ends, which are used for fixing after the short fixed shaft (3) and the long fixed shaft (4) are matched, and at the same time, it plays the role of a reinforcing rib. The polyhedral fixed support (1) can connect multiple short fixed shafts (3) and is used for the extension of the truss.

Description

Technical Field

[0001] This invention relates to a docking module mechanism for reconfigurable trusses, and to a scalable truss assembly process with rapid alignment and locking functions. It belongs to the field of structural engineering technology and is also applicable to the assembly and construction of various space-based on-orbit trusses. Background Technology

[0002] As human deep space exploration continues to advance, on-orbit assembly technology for space trusses, as the foundation for the design and assembly of large spacecraft platforms, will see wider applications and play a crucial role in carrying out space missions. Considering the limited launch space of launch vehicles, space truss structures can assemble truss members and other components in a specific sequence to form a complete three-dimensional structure. This offers advantages such as strong scalability, good encapsulation, simple structure, and low maintenance costs, demonstrating the significant application value of on-orbit assembly.

[0003] On-orbit assembly technology for space trusses is gradually evolving towards multi-span, scalable modular truss structures. As the participation of space robots in truss assembly has progressed from early semi-autonomous assembly methods such as remote operation and human-robot collaborative assembly to current assembly methods with a certain degree of autonomy, existing space truss assembly structures are ill-suited to the intelligence of space robots. Therefore, considering the versatility of truss installation in space robot truss assembly tasks, and addressing issues such as truss reconfigurability and lateral and longitudinal constraints during assembly, while also considering the operability of space robots in truss assembly, a docking module mechanism for reconfigurable trusses has been designed. Summary of the Invention

[0004] This invention provides a docking module mechanism for reconfigurable trusses, which can overcome the shortcomings of existing space trusses.

[0005] The present invention provides a docking module mechanism for a reconfigurable truss, which is composed of a polyhedral fixed support (1), a bolt bushing (2), a short fixed shaft (3), a long fixed shaft (4), a bushing (5), a first connector (6), a second connector (7), and an aluminum profile (8). It realizes all-round constraint and alignment of the reconfigurable truss in the lateral, longitudinal and axial directions, and ensures that the space robot can be quickly assembled and disassembled.

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

[0007] The polyhedral fixed support (1) and the short fixed shaft (3) are fixed by bolts. The long fixed shaft (4) is positioned and aligned with the concave cylinder of the short fixed shaft (3) through the front convex cylinder, so that the two are accurately embedded. At the same time, the sawtooth shape of the long fixed shaft (4) and the short fixed shaft (3) meshes to restrict lateral and longitudinal movement. After the long fixed shaft (4) and the short fixed shaft (3) are perfectly meshed, the bolt bushing (2) connects the two short fixed shafts by threading. The inner wall of the bolt bushing (2) cylinder forms a loose fit with the outer wall of the boss of the short fixed shaft (3). At the same time, the inner wall of the bolt bushing (2) cylinder forms a loose fit with the outer wall of the cylinder of the long fixed shaft (4). The rear boss of the long fixed shaft (4) is embedded in the groove of the bushing (5) to restrict the movement between the two. The relative rotation is fixed by bolt connection; the rear end boss of the bushing (5) is embedded in the groove of the connector (7), which restricts the relative rotation between the two and is fixed by bolt connection; since the bushing (5) has a bidirectional thread and inner walls with different diameters, after the convex cylinder of the long fixed shaft (4) and the concave cylinder of the short fixed shaft (3) are perfectly meshed, the bushing (5) is connected to the short fixed shaft (3) by screwing. At the same time, the different inner wall diameters can simultaneously restrict the lateral and longitudinal separation of the long fixed shaft (4) and the short fixed shaft (3) by loose fit, so as to form a stable connection of the truss; both connector (6) and connector (7) are fixed by bolts; the rear end of connector (7) is fixed to the aluminum profile (8) by bolts.

[0008] Furthermore, the convex cylindrical outer wall of the long fixed shaft (4) and the concave cylindrical inner wall of the short fixed shaft (3) can serve as a guide for connection to facilitate installation and fixation; the serrated shape of the long fixed shaft (4) and the short fixed shaft (3) can prevent lateral and longitudinal sliding at the connection point to limit the positional relationship between the two. Attached Figure Description

[0009] To more clearly illustrate the technical solution of this application, the accompanying drawings used in the specific embodiments will be briefly introduced below.

[0010] Figure 1 This is an exploded plan view of a docking module mechanism for a reconfigurable truss.

[0011] Figure 2 An exploded 3D diagram of a docking module mechanism for a reconfigurable truss.

[0012] Figure 3 This is an assembly plan view of a docking module mechanism for a reconfigurable truss.

[0013] Figure 4 A 3D model of a docking module mechanism for a reconfigurable truss.

[0014] Figure 5 This is a diagram of a tetrahedral truss structure for reconfigurable truss assembly. Detailed Implementation

[0015] To more clearly explain the purpose, technical solution, and advantages of this invention, the invention will be described in detail below with reference to the accompanying drawings.

[0016] It should be understood that the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0017] Example

[0018] Figure 1 This is an exploded plan view of a docking module mechanism for a reconfigurable truss. Figure 2 An exploded 3D view of a docking module mechanism for a reconfigurable truss. (Example) Figure 1 , Figure 2 As shown, a docking module mechanism for a reconfigurable truss is composed of a polyhedral fixed support (1), a bolt bushing (2), a short fixed shaft (3), a long fixed shaft (4), a bushing (5), a first connector (6), a second connector (7), and an aluminum profile (8). The polyhedral fixed support (1) consists of 18 fixed planes with a threaded hole in the center for installation and fixing; the bolt bushing (2) has threads inside and a stepped cylindrical surface with loose fit. The threaded inner hole at the front end is used for screwing and fixing, and the cylindrical surface next to the threaded hole at the front end is used as a mating surface to restrict lateral and longitudinal movement. The threaded inner hole at the rear end is used for screwing and fixing, and the cylindrical surface next to the threaded hole at the rear end is used as a mating surface to restrict lateral and longitudinal movement; the short fixed shaft (3) has a three-layer stepped shaft. The middle shaft is used for loose fit with the bolt bushing (2), and the rear shaft has a hollow cylindrical surface for alignment. At the same time, it has a special "Z" shaped structure to restrict axial, lateral and longitudinal position; the long fixed shaft has a cylindrical boss and a special "Z" shaped structure at the front end, and its function is the same as that of the short fixed shaft (3). The rear end has a boss to restrict its six-dimensional movement; the bushing (5) has a front concave and rear convex structure for front and rear fixing; the first connector (6) and the second connector (7) are responsible for connecting the bushing (5) and the aluminum profile (8) respectively.

[0019] Figure 3 This is an assembly plan view of a docking module mechanism for a reconfigurable truss. Figure 4A 3D assembly diagram of a docking module mechanism for a reconfigurable truss. The docking module mechanism for a reconfigurable truss consists of a polyhedral fixed support (1), bolted bushings (2), a short fixed shaft (3), a long fixed shaft (4), bushings (5), a first connector (6), a second connector (7), and an aluminum profile (8). The polyhedral fixed support (1) and the short fixed shaft (3) are fixed by bolts. The short fixed shaft (3) and the long fixed shaft (4) are respectively constructed with an externally convex cylinder and an internally concave cylinder, enabling rapid alignment during truss assembly. Simultaneously, both have a special "Z"-shaped structure to restrict the truss's lateral, longitudinal, and axial directions. The bolted bushings (2) have threads of different sizes at both ends and inner diameters of different diameters adjacent to the threaded openings. After the short fixed shaft (3) and the long fixed shaft (4) are aligned and registered, the space robot manipulator rotates the bolt bushing (2), whose front threaded reed connects to the threaded reed of the short fixed shaft (3), thus achieving a stable connection between the short fixed shaft (3) and the long fixed shaft (4). At the same time, the cylindrical surface of the bushing front end close to the threaded reed forms a loose fit with the cylindrical boss of the short fixed shaft (3), restricting the lateral and axial movement of the truss and enhancing the truss stiffness. Subsequently, the thread remains engaged with the threaded reed of the long fixed shaft (4), and the cylindrical surface close to the thread is connected to the short fixed shaft (4). 3) The cylindrical surface formed by meshing with the long fixed shaft (4) forms a loose fit, which restricts the lateral and longitudinal movement of the truss and enhances the stiffness of the truss; the rear end boss of the long fixed shaft (4) is embedded in the groove of the bushing (5), which restricts the relative rotation between the two and is fixed by bolt connection; the rear end boss of the bushing (5) is embedded in the groove of the connector (7), which restricts the relative rotation between the two and is fixed by bolt connection; connector (6) and connector (7) are fixed by bolt; the rear end of connector (7) is fixed to the aluminum profile (8) by bolt.

[0020] Figure 5 This is a diagram of a tetrahedral truss structure for reconfigurable truss assembly. The tetrahedral truss structure for reconfigurable truss assembly consists of docking module mechanisms of reconfigurable trusses. Relying on the expandability of the polyhedral fixed support (1), the docking module mechanisms of the reconfigurable trusses are connected to form a truss system with high structural strength.

[0021] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0022] The contents not described in detail in this specification are common knowledge to those skilled in the art.

Claims

1. A docking module mechanism for a reconfigurable truss, characterized in that... The mechanism includes: Polyhedral fixed support (1), bolt bushing (2), short fixed shaft (3), long fixed shaft (4), bushing (5), connector one (6), connector two (7), aluminum profile (8); the polyhedral fixed support (1) and the short fixed shaft (3) are fixed by bolts, and the long fixed shaft (4) is positioned and aligned with the concave cylinder of the short fixed shaft (3) through the front convex cylinder, so as to achieve accurate embedding of the two; at the same time, the sawtooth shape of the long fixed shaft (4) and the short fixed shaft (3) meshes to restrict lateral and longitudinal movement; after the long fixed shaft (4) and the short fixed shaft (3) are perfectly meshed, the bolt bushing (2) connects the two short fixed shafts by thread screwing, and the inner wall of the bolt bushing (2) cylinder forms a loose fit with the outer wall of the boss of the short fixed shaft (3), and at the same time, the inner wall of the bolt bushing (2) cylinder forms a loose fit with the outer wall of the long fixed shaft (4). The rear end boss of the long fixed shaft (4) is embedded in the groove of the bushing (5), which restricts the relative rotation between the two and is fixed by bolt connection; the rear end boss of the bushing (5) is embedded in the groove of the connector (7), which restricts the relative rotation between the two and is fixed by bolt connection; since the bushing (5) has a bidirectional thread and inner walls with different diameters, after the convex cylinder of the long fixed shaft (4) and the concave cylinder of the short fixed shaft (3) are perfectly meshed, the bushing (5) is connected to the short fixed shaft (3) by screwing. At the same time, the different inner wall diameters can simultaneously restrict the lateral and longitudinal separation of the long fixed shaft (4) and the short fixed shaft (3) by loose fit, so as to form a stable connection of the truss; both connector (6) and connector (7) are fixed by bolts; the rear end of connector (7) is fixed to the aluminum profile (8) by bolts.

2. The docking module mechanism for a reconfigurable truss according to claim 1, characterized in that, The cylindrical and serrated alignment mechanism of the long fixed shaft (4) and the short fixed shaft (3) includes: The convex cylindrical outer wall of the long fixed shaft (4) and the concave cylindrical inner wall of the short fixed shaft (3) can serve as a guide for connection to facilitate installation and fixation; the serrated shape of the long fixed shaft (4) and the short fixed shaft (3) can prevent lateral and longitudinal sliding at the connection point to limit the positional relationship between the two.

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