A three-degree-of-freedom motion platform with two rotations and one translation

Abstract

The invention discloses a two-rotation-freedom-degree one-translation-freedom-degree motion platform, and belongs to the field of motion simulation. The motion platform comprises an upper platform anda lower platform which are each provided with three hinge installation points distributed in an isosceles triangle shape, two isosceles triangles are similar, and the vertex angles of the two isosceles triangles are in the same direction; the perpendicular bisector of the height of the isosceles triangle on the upper platform is provided with a fixing point and a linear slide rail, and the linearslide rail is arranged in the perpendicular bisector of the height of the isosceles triangle; the upper ends and the lower ends of three pose adjusting cylinders are connected with the hinge installation points on the upper platform and the lower platform correspondingly; and the lower ends of two telescopic limiting pieces are fixed to the perpendicular bisector of the height of the isosceles triangle on the lower platform, and the upper ends of the two telescopic limiting pieces are connected with the fixing point and a slide block on the linear slide rail. The two-rotation-freedom-degree one-translation-freedom-degree motion platform can achieve three-freedom-degree motion simulation, that is, conducts rotation around the X axis and the Y axis and translation in the Z-axis direction, and accordingly is suitable for simulating rolling, pitching, heaving and other two-rotation one-translation occasions when a ship is moored on the sea.

Description

technical field [0001] The invention belongs to the field of motion simulation, and more specifically relates to a three-degree-of-freedom motion platform with two rotations and one translation. Background technique [0002] With the continuous improvement of motion simulation technology, the less-DOF motion platform has been widely researched and applied in recent years. Compared with the six-DOF motion platform, it has the advantages of easy motion positive solution, simple structure, lower cost, and weaker motion coupling. Easy decoupling and other advantages. [0003] However, the existing three-degree-of-freedom platforms have weak load-carrying capacity and small movement space. Improper selection of motion pairs leads to increased processing and installation difficulties, which affects the working accuracy and service life of the mechanism. Most of the current three-degree-of-freedom motion platforms are Two-translation one-rotation motion platform or three-rotation ...

AI Technical Summary

Problems solved by technology

[0003] However, the existing three-degree-of-freedom platforms have weak load-carrying capacity and small movement space. Improper selection of motion pairs leads to increased processing and installation difficulties, which affects the working accuracy and service life of the mechanism. Most of the current three-degree-of-freedom motion platforms are Two-translation one-rotation motion platform or three-rotation motion platform

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