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Three translation parallel mechanism multiple dimension vibration exciting table

A technology of three-translation and excitation table, which is applied in the testing of machine/structural components, vibration testing, measuring devices, etc., to achieve the effect of high rigidity, good dynamic performance and large working space

Inactive Publication Date: 2007-10-10
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] At present, there is very little research on parallel mechanism vibration platforms at home and abroad. The patents found such as: CN1526483 are limited to flexible micro vibration platforms, and no scholars have studied medium and small parallel mechanism vibration platforms.

Method used

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  • Three translation parallel mechanism multiple dimension vibration exciting table

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Embodiment Construction

[0018] As shown in Figure 1, the patent of the present invention consists of three identical branch chains, a dynamic platform and a static platform. Each branch chain is composed of a moving pair (P) and two universal joints (U). The chains are arranged vertically and orthogonally in the initial position. Through the analysis of the motion characteristics of the mechanism, it can be known that the mechanism can realize the translation output motion in three directions in space, and its motion positive and negative solutions have analytical solutions, so the control is easier.

[0019] The moving platform in the patent of the present invention is the work surface of the excitation table, the size of which is 500×500mm, and the thickness is 50mm. There are T-shaped slots on the table to facilitate fixing the test piece on the workbench. The workbench material can be made of ordinary industrial steel such as No. 45 steel, or aluminum alloy material can be used as the table top ...

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Abstract

A multidimensional exciting vibration table of three-translation parallel mechanism type is prepared for setting three branch chains to be orthogonal arrangement in vertical to each other, forming each branch chain by a movement pair and two universal joints, connecting one end of movement pair to static platform and another end to the first universal joint, connecting another end of universal joint connected with movement pair to the second universal joint and another end of the second universal joint connected with the first one to active platform as well as setting initial position of branch chain to be linear arrangement.

Description

technical field [0001] The patent of the present invention relates to the technical field of vibration testing, and specifically refers to a three-translation parallel mechanism multi-dimensional vibration table, which uses a three-degree-of-freedom parallel mechanism platform as the main body, and uses a one-way exciter as a driving source for a parallel mechanism vibration table . Three one-way exciters are respectively installed in the three branch chains as driving sources. Controlling the three one-way exciters to move according to a certain rule can make the moving platform generate a translational vibration of an arbitrary waveform with three degrees of freedom in space, which can be applied to , Small mechanical vibration testing field. Background technique [0002] With the improvement of reliability requirements for products, especially aerospace products, the development of vibration test system as the key equipment of reliability test is becoming more and more i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/02
Inventor 马履中仲栋华
Owner JIANGSU UNIV
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