Three-degree-of-freedom static load balance parallel motion simulation platform

Abstract

The invention discloses a three-degree-of-freedom static load balance parallel motion simulation platform. The three-degree-of-freedom static load balance parallel motion simulation platform mainly comprises a movable platform, a fixed platform and five branches for connecting the movable platform with the fixed platform, wherein the four branches distributed on the periphery are drive branches with the same structure, and another one is an intermediate bearing constraint branch; each of the four branches consists of a first universal hinge, an electric cylinder and a spherical hinge, wherein the first universal hinges are fixedly connected with the fixed platform and are in isosceles trapezoid distribution; the spherical hinges are fixedly connected with the movable platform and are in square distribution; the intermediate bearing constraint branch is positioned on the central connecting line between the movable platform and the fixed platform; one end of a second universal hinge of the intermediate bearing constraint branch is connected with the movable platform; the other end of the second universal hinge is connected with a cylinder pair with a spring; a supporting sleeve is arranged outside the cylinder pair; one end of a supporting frame is fixedly connected with the supporting sleeve; the four supporting legs of the supporting frame are fixedly connected with the fixed platform; and a baffle ring is arranged between the upper end of the supporting sleeve and the cylinder pair. The invention has the advantages that the three-degree-of-freedom static load balance parallel motion simulation platform is simple in structure, small in occupied size, high in carrying capacity, and easy to install and maintain.

Description

technical field [0001] The invention relates to a parallel mechanism, in particular to a parallel motion simulation table. Background technique [0002] With the application and development of mechanism science and ground motion simulation technology, many experiments and training in space, air and ocean are carried out on land, which is safe, reliable and saves money. As a motion simulator, it is usually a parallel mechanism with the advantages of high rigidity, stable structure, strong bearing capacity, high precision, small motion inertia, difficult forward solution and easy reverse solution. Due to the characteristics mentioned above, the parallel motion simulation platform is suitable for motion simulation of aircraft, ships, automobiles, etc. At present, most parallel motion simulators have six degrees of freedom, and their manufacturing cost is high and their control technology is high. Parallel mechanisms with large loads generally use hydraulic cylinders, which ar...

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Problems solved by technology

Patent CN00105935.1 proposes a four-degree-of-freedom parallel robot mechanism, which has four branches with two rotations and two movements, and has a low carrying capacity; patent CN201110156285.4 proposes a space three-degree-of-freedom parallel mechanism with mixed input, It can realize high-speed movement of the mechanism and reduce the inertia of the mechanism, but it cannot balance the load weight; patent CN200910092230.4 proposes a three-degree-of-freedom parallel mechanism for attitude adjustment, which can realize three-dimensional rotation, simple mechanism, and kinematic solution coupling, but not suitable for larger loads

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