Flexible member with crisscross structure and strain balance

Abstract

The invention discloses a flexible member with a crisscross structure and a strain balance, and belongs to the field of multi-component testing. The invention discloses a flexible member with a crisscross structure, which is mainly composed of a positioning step, a connecting flange, cross beams perpendicular to one another, and transition cylinders. The cross beams are composed of at least one set of plates perpendicular to one another. The directions of the plates perpendicular to each other are consistent with the directions of two forces perpendicular to each other. On the premise of ensuring weighing, the thinner the thickness of the plates is, the better the decoupling effect is. The invention further discloses a strain balance applied to the flexible member based on a crisscross structure. The strain balance is composed of a plurality of single-component sensors. Through crisscross beams which are vertically symmetrical, the elasticity of the flexible member is improved on the premise of ensuring that the flexible member has enough rigidity, the self-decoupling function of the strain balance is realized, the coupling between the components of force and torques of the strain balance is reduced, and the measurement accuracy of the strain balance is obviously improved.

Description

technical field [0001] The invention relates to a flexible member with a cross structure applied to a six-component force measuring platform, belonging to the field of multi-component testing. Background technique [0002] When measuring the force in machinery and wind tunnels and in the vector measurement of aeroengines, it is necessary to use multi-component force measurement in many occasions. Multi-component measurement can be measured by multi-component sensors, or it can be composed of multiple single-component sensors. The method of force balance realizes the measurement of multiple components. Strain balance has developed to the current stage, and its technology has basically matured and has the following characteristics: [0003] 1) The weight is lighter, the response speed is faster, and the signal is easy to transmit, which is beneficial to the automatic measurement of the wind tunnel test; [0004] 2) It is small in size and can be placed inside the model. It c...

AI Technical Summary

Problems solved by technology

[0008] In order to solve the measurement problem of the strain balance with poor self-decoupling performance, the main purpose of the present invention is to provide a flexible member with a cross structure, and to provide a strain balance based on the flexible member with a cross structure. The flexible member adopts The up and down symmetrical cross structure improves the elasticity of the flexible part on the premise of ensuring that the flexible part has sufficient rigidity, realizes the self-decoupling function of the strain balance, reduces the coupling between each component force and each torque of the strain balance, and significantly Improving the Measurement Accuracy of Strain Balances

Images