Three-freedom degree mechanical type vibration environmental test platform

Abstract

The invention discloses a three-freedom mechanical vibration environment testing platform, which relates to the vibration environment testing field. A pedestal 1 is connected with a vibration platform 5 through movement branched chains 2, 3 and 4, wherein the movement branched chains 2 and 3 are composed of servo motors 6 and 15, guide rods 21 and 14, ball screw nut pairs 22 and 13, moving blocks 20 and 12, link rods 18 and 10, fixed length rods 19 and 11, moving link rods 17 and 16 respectively; the movement branched chain 4 is composed of a servo motor 9, a ball screw nut pairs 8 and a fixed length rod 7. the testing platform, driven by the servo motors 6, 15 and 9, is capable of realizing vibration of the vibration platform 5 in any direction of space. The invention has the advantages of application of parallel mechanism to perform vibration-resistant strength and vibration-resistant stability test or simulate other vibration environment to electromechanical components, better bearing capability, excellent machining and assembly technology, compact structure, high precision, large rigidity and relatively large movement space.

Description

technical field [0001] The invention relates to the field of vibration environment tests, in particular to a kinematic mechanical vibration environment test platform. The invention belongs to test equipment for carrying out vibration-resistant strength and vibration-resistant stability tests on electromechanical components or simulating other vibration environments. Background technique [0002] Parallel robots have the advantages of compact structure, high rigidity, and high precision. They have attracted the attention of scholars at home and abroad, and have been widely used in the fields of machining, aerospace, and bionics. Applying the parallel mechanism to the field of vibration test gives full play to the advantages of the parallel mechanism, and also provides a new test platform for the field of vibration test. [0003] Chinese Patent Publication No. CN 1614376A, published on May 11, 2005, the name of the invention is a three-degree-of-freedom mechanical vibration e...

AI Technical Summary

Problems solved by technology

Its shortcoming is that the static platform and the dynamic platform are connected by three pairs of moving branch chains distributed on three vertical planes perpendicular to each other, so a single branch bears a large force in a certain direction, resulting in a relatively weak carrying capacity. And each set of rigid brackets is directly connected to the slider through a ball joint, and the slider is sleeved on the guide rail. When moving, the rigid bracket and the guide rail are prone to collision, resulting in a small working space

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