Six-degree-of-freedom parallel stabilizing and vibration-isolating cabin

Abstract

A six-degree-of-freedom parallel stabilizing and vibration-isolating cabin mainly comprises a base, six vibration-isolating branches, assisting bearing branches, a cabin body and six linear driving units fixedly connected onto the cabin body, wherein each of the six vibration-isolating branches comprises a spherical hinge, a first connecting rod, a vibration isolator, a second connecting rod and a universal hinge, one end of the first connecting rod is connected with the base by the aid of the spherical hinge, the other end of the connecting rod is connected with one end of the vibration isolator, the other end of the vibration isolator is connected with one end of the second connecting rod, and the other end of the second connecting rod is connected with one end of a moving rod of each of the six linear driving units by the aid of the universal hinge; the cabin body adopts a hexagonal prism structure, every two linear driving units form a group, driving directions are parallel, and the six linear driving units are uniformly and fixedly connected onto spaced side surfaces of the hexagonal prism; each of the assisting bearing branches comprises spherical hinges and an assisting part, and two ends of the branch are connected with the bottom of the cabin and the base by the aid of the spherical hinges. The six-degree-of-freedom parallel stabilizing and vibration-isolating cabin is low in overall height and high in bearing capacity and has very good stabilizing and vibration-isolating effects.

Description

technical field [0001] The invention relates to a parallel mechanism, in particular to a parallel anti-vibration cabin. Background technique [0002] In some cases, the control of motion and the isolation of vibration are very important. For example, a ship sailing at sea will produce multi-degree-of-freedom motion and vibration due to the impact of waves or the vibration of its own diesel engine. These unnecessary motions and vibrations will bring negative effects to people who often work at sea or take ships , affecting the pilot's control of the ship, affecting the entertainment and rest of the crew, etc. Another example is the disaster area after the earthquake, aftershocks occur continuously, and the shaking and vibration generated seriously interfere with the surgical treatment of the wounded by the medical staff and the recovery of the wounded themselves. In addition, some specific environments, such as the operation of precision experiments, do not want to be distu...

AI Technical Summary

Problems solved by technology

Chinese patent 200810225045.3 proposes a six-degree-of-freedom large-amplitude vibration active isolation platform, which consists of an upper platform, a lower platform, a two-degree-of-freedom precision Hooke hinge, a large-load gap-free precision Hooke hinge, and a large-amplitude active isolation rod. High-frequency and large-amplitude vibrations can be effectively isolated and suppressed, but the ability to adjust the attitude is limited. At the same time, if this platform is used to build a large cabin, it will take up a lot of space

Chinese patent 201510324022.8 proposes a 3PRS+6SPS parallel posture adjustment and vibration isolation composite platform, which consists of a moving platform, a frame, and three identical main branch chains and six identical elastic branch chains connecting the moving platform and frame. This invention Although it has the functions of adjusting the attitude of the working platform and isolating vibration in multiple dimensions, it only has three degrees of freedom of two rotations and one movement, and its application is limited.

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