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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, reduced return error, and reduced redundant degrees of freedom

Inactive Publication Date: 2012-07-25
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 in conjunction with 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 move along the vertical axis of the upper platform plane. In the case of fretting, the movement of the parallel mechanism can be used to apply axial pulling or pushing force to the shaft of the loaded part; and the rotation of the parallel mechanism can be used to apply a bending moment to the shaft of the loaded part. Axial force loading and bending moment loading can be decoupled from each other, and can be applied to the shaft of the loaded part individually or in combination. The 3-RPS mechanism and ...

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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 parallel mechanism for performance testing of instruments and equipment. Background technique [0002] Performance testing of instruments and equipment under composite loads has been a key technology in the industry for a long time, and its performance under composite loads will greatly affect the stability, reliability, and speed of the equipment under test. [0003] Most of the existing load simulators focus on the loading of single bending moment and single torque, and the composite loading of bending moment, torque and axial force on instruments and equipment is rarely seen. The loading equipment of single bending moment and single torque can only load the moment in one direction. Contents 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 bendi...

Claims

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Application Information

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Patent Type & Authority Patents(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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