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A multi-redundant backup stewart platform support rod for space

A support rod, multi-redundancy technology, applied in the connection of rods, mechanical equipment, control of mechanical energy, etc., can solve problems such as single-point failure of the support rod of the Stewart platform, and achieve the effect of solving single-point failure and improving reliability.

Active Publication Date: 2015-09-30
上海航天技术研究院
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problem of single-point failure of the space stewart platform support bar, the purpose of the present invention is to provide a space with multi-redundant backup stewart platform support bar, using the multi-redundant backup support bar of the present invention, it is possible to retain the stewart platform with high precision In addition to the advantages of high rigidity, it also has the advantages of multiple redundant backups, which improves the stability of the stewart platform

Method used

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  • A multi-redundant backup stewart platform support rod for space
  • A multi-redundant backup stewart platform support rod for space
  • A multi-redundant backup stewart platform support rod for space

Examples

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Embodiment Construction

[0017] figure 1 is the mechanical schematic diagram of the stewart platform; figure 1 As shown, a motion platform is supported by six support rods above the installation platform, and the six support rods form a six-degree-of-freedom parallel mechanism with the installation platform and the motion platform.

[0018] figure 2 It is a three-dimensional figure of the stewart platform of the present invention; as figure 2 As shown, the platform includes a base plate 2, six support rods are evenly distributed on the base plate 2, the upper ends of the support rods 3 are connected with the target top plate 1, and the ends are connected with the base plate 2. Each support rod 3 contains a spherical pair and a moving pair connected to the target top plate 1 , and a spherical pair connected to the bottom plate 2 . Through the reorganization of kinematic pairs, a series of 6-DOF parallel mechanisms are formed.

[0019] Preferred embodiments of the present invention will be describ...

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Abstract

The invention relates to a spacecraft platform and discloses a redundant backup Stewart platform supporting bar for space. The redundant backup Stewart platform supporting bar for the space comprises a screw rod [4], an inner rotary barrel [5] and an outer installation barrel [6]. The outer installation barrel [6] is provided with a linear motor stator [7], a linear motor rotor coil [8] and a main motor stator coil [11] inside and further provided with a backup motor stator coil [12], a backup linear motor stator [16], a backup linear motor rotor coil [17] and an explosive bolt [15] so that various redundant backups of the stewart platform supporting bar for the space are achieved. The redundant backup Stewart platform supporting bar for the space solves the problem of single-point failure of the Stewart platform supporting bar for the space and has the advantage of improving reliability of the Stewart platform for the space.

Description

technical field [0001] The invention relates to a space vehicle platform, in particular to a multi-redundancy backup stewart platform support bar for space. Background technique [0002] Stewart platform (also known as hexapod platform) is a six-degree-of-freedom space coupling mechanism, which has been widely used in the fields of attitude generator, space vehicle docking mechanism, surgery and CNC machining for more than 40 years since its birth. [0003] The Stewart platform is a parallel mechanism whose production can be traced back to the early nineteenth century. In 1813, French scholar Canchy studied parallel mechanisms. In 1931, Gwinnett proposed an entertainment device based on a spherical parallel mechanism. In 1940, Pollard proposed an industrial space parallel device for car painting. In 1947, the British Gough designed a tire testing machine with 6 degrees of freedom using a parallel mechanism. This mechanism is called a hexapod structure (Hexapod). This typ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B7/10H02K7/10
Inventor 赵艳涛史耀强吴晟
Owner 上海航天技术研究院
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