Connecting mechanism adaptive to free movement of self-deformation member space

Abstract

The invention relates to a connecting mechanism adaptive to free movement of a self-deformation member space, comprising a free member with self-deformation characteristics, a supporting platform, and three combined auxiliary branched chains and three mobile auxiliary branched chains which are alternately fixed on the free member. The supporting platform is arranged around the middle part of the periphery of the free member, and clearance is arranged between the supporting platform and the free member; the combined auxiliary branched chains respectively comprise two pairs of spherical hinges and a member connection piece; each pair of the spherical hinges can respectively form a spherical pair in a fit and rotating manner; the two spherical pairs are connected in series by the member connection piece and symmetrically distributed on the upper side and the lower side of the supporting platform, and the upper end part and the lower end part of the member connection piece are fixedly connected on the free member; and one end of each of the mobile auxiliary branched chains is fixedly connected on the free member, and the other end thereof is arranged on the supporting platform in a slidable manner to form a mobile pair. The connecting mechanism can achieve local small displacement and overturning at 360 degrees of the free member and can adapt to heavy-duty working conditions.

Description

technical field [0001] The invention relates to a connection mechanism of components, in particular to a connection mechanism adapted to the free movement of self-deformable components in space. Background technique [0002] A mechanical system generally consists of a moving part and a driven part. In the actual design process, in order to connect the components and meet the requirements of various working conditions, it is often necessary to carry out a specific design for the connection of the components. In the existing parallel structure design, a fixed platform is generally connected with a dynamic platform through multiple branch chains connected to each other, and the movement of the platform in a certain space is realized by changing the length and orientation of the branch chains. This structure requires the follower to be a rigid body, which can move according to a predetermined trajectory without self-deformation (such as self-expansion and contraction by tempera...

AI Technical Summary

Problems solved by technology

When the driven component itself has self-deformation characteristics and works under heavy load conditions, some existing parallel connection structures are often not strong enough and will generate additional constraints and form additional forces, which will affect the performance and stress state of the component, which is very difficult. Difficult to meet design requirements

For example, a "six-degree-of-freedom redundant parallel mechanism" disclosed in the Chinese invention patent specification with the application number "200510093402.1", its moving platform (ie component) cannot realize 360° rotation around the circular guide rail as the static platform , that is, the spatial free movement of components cannot be realized

However, the series structure design can only ensure that the component rotates around three coordinate axes. For components with self-deformation characteristics, it also cannot meet the requirements of free movement of the component in space.

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