Load simulator based on series-parallel mechanism

A technology of load simulator and hybrid mechanism, which is applied in the testing of machine/structural components, testing of mechanical components, instruments, etc., to achieve the effects of strong versatility, reduction of return error, and reduction of redundant degrees of freedom

Inactive Publication Date: 2011-09-07
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The loading equipment with separate bending moment and separate torque can only load the moment in one direction

Method used

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  • Load simulator based on series-parallel mechanism
  • Load simulator based on series-parallel mechanism
  • Load simulator based on series-parallel mechanism

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Embodiment Construction

[0022] The present invention will be further described in detail below with reference to the accompanying drawings.

[0023] The basic idea of ​​the load simulator based on the hybrid mechanism of the present invention is: 3-RPS (3-Revolute-Prismatic-Spherical, translated as 3-rotating pair-moving pair-ball pair) mechanism is a zero-torsion mechanism, and 3 - The RPS parallel mechanism has three degrees of freedom to rotate around two vertical axes in the upper platform and to move along the vertical axis of the upper platform plane. In the case of fretting, the movement of the parallel mechanism can apply axial pulling force or thrust to the shaft of the loaded part; while the rotation of the parallel mechanism can apply a bending moment to the shaft of the loaded part. Axial force loading and bending moment loading can achieve mutual decoupling, and can be applied to the shaft of the loaded component individually or in combination. The 3-RPS mechanism and the series branch ...

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Abstract

The invention discloses a load simulator based on a series-parallel mechanism, which consists of an in-series assembly (1), an in-parallel branched-chain assembly A (2), an in-parallel branched-chain assembly B (3), an in-parallel branched-chain assembly C (4) and a static platform assembly (5). Connecting rods at the upper ends of the in-parallel branched-chain assembly A (2), the in-parallel branched-chain assembly B (3), the in-parallel branched-chain assembly C (4) are installed on the static platform assembly (5); elastic plates at the lower ends of the in-parallel branched-chain assembly A (2), the in-parallel branched-chain assembly B (3), the in-parallel branched-chain assembly C (4) are installed on the sleeve of the in-series assembly (1); the motor base of the in-series assembly (1) is installed on the static platform assembly (5); and the sleeve of the in-series assembly (1) is respectively connected with the elastic plates of the in-parallel branched-chain assembly A (2), the in-parallel branched-chain assembly B (3), the in-parallel branched-chain assembly C (4). The load simulator is used for performance test for instruments and equipment; in addition, the load simulator has the ability of combined loading of loads in various directions, and the simulator is realized by the series-parallel connection of in-series mechanisms and in-parallel mechanisms.

Description

technical field [0001] The invention relates to a load simulator based on a hybrid mechanism for performance testing of instruments and equipment. Background technique [0002] The performance test of equipment under compound load is a long-standing key technology in the industrial field, and its performance under compound load will greatly affect the stability, reliability, and rapidity of the instrument under test. [0003] Most of the existing load simulators focus on the loading of a single bending moment and a single torque, and the combined loading of the bending moment, torque and axial force of the equipment is rarely seen. Loading equipment with separate bending moment and separate torque can only load the moment in one direction. SUMMARY OF THE INVENTION [0004] The purpose of the present invention is to provide a load simulator based on a hybrid mechanism, which is not a single bending moment, torque or axial force loading, but has a bending moment, torque, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00
Inventor 宗光华张新华毕树生裴旭于靖军李伟王连丛
Owner BEIHANG UNIV
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