Six-degree-of-freedom parallel test platform with moving platform height adjustable in large range

Abstract

The invention discloses a six-degree-of-freedom parallel test platform with the moving platform height adjustable in a large range. The six-degree-of-freedom parallel test platform comprises a movingplatform, a static platform, six servo modules adopting identical structures and six moving branch chains adopting identical structures; each servo module comprises a servo motor, a linear module, transmission gears and two gear shafts; each linear module comprises a linear sliding platform arranged at the top of the static platform, three ball screws arranged in the linear sliding platform in parallel as well as screw sliding blocks matched with the ball screws and the linear sliding platform; and each moving branch chain comprises a spherical hinge connected with the bottom of the moving platform, a telescopic hydraulic cylinder, a hook joint and a hook joint base. The six-degree-of-freedom parallel test platform is simple in structure, convenient to use and stable in working, the control precision of the test platform is effectively improved under synergetic driving of the three ball screws, and a hydraulic system is introduced to each moving branch chain, so that the carrying capacity of the test platform is effectively improved.

Description

technical field [0001] The invention relates to the technical field of parallel mechanisms, in particular to a parallel test platform with six degrees of freedom whose height of a moving platform can be adjusted in a wide range. Background technique [0002] The parallel mechanism is a closed-loop system composed of multiple parallel branch chains. Compared with the traditional series mechanism, it has the characteristics of high rigidity, high precision, high bearing capacity, simple structure and easy realization of high-speed movement. Its application involves modern cutting-edge Various fields of technology have promoted the development of technology. Therefore, the study of parallel mechanism is of great significance. [0003] At present, the height of the moving platform of some multi-degree-of-freedom parallel test platforms is relatively fixed, and can only be changed in a small range. In the parallel mechanism, the combination of the screw guide rail and the hydra...

AI Technical Summary

Problems solved by technology

[0003] At present, the height of the moving platform of some multi-degree-of-freedom parallel test platforms is relatively fixed, and can only be changed in a small range. It is difficult to complete tasks that require large-scale adjustment of height, and it is difficult to be applied in some designated occasions.

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