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Single component strain amplification structure

A single-component, strain-direction technology, applied in the field of sensors, can solve the problems of inflexible application and single use range, and achieve the effect of simple structure, good symmetry and high precision

Inactive Publication Date: 2018-02-02
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, such an overall structure limits its scope of use and cannot be flexibly applied.

Method used

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Embodiment Construction

[0019] The present invention is described in detail below in conjunction with accompanying drawing:

[0020] see figure 1 As shown in Figure 4, the present invention discloses a single-component strain amplification structure, which includes a rigid frame 1, a rigid beam 2, and an elastic beam 3; the rigid frame includes a first end frame 11, a second end frame 12, The first side frame 13 and the second side frame 14; the first end frame 11, the second end frame 12, the first side frame 13, and the second side frame 14 form a frame structure. The rigid beam 2 extends from the first end frame 11 to the second end frame 12. The first end frame 11, the second end frame 12, the first side frame 13, the second side frame 14, and the rigid beam 2 surround A hollow space 4 is formed, and the hollow space 4 is in the shape of a "door"; that is, there are gaps 5 between both sides of the rigid beam 2 and the first side frame 13 and the second side frame 14. The elastic beam 3 is fixe...

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Abstract

The invention relates to a simple-component strain amplification structure which is a novel simple-component strain amplification structure. The simple-component strain amplification structure comprises a rigid framework, a stiffening bar and an elastic beam. Foil gauges are attached to the elastic beam. Deformation of framework columns is reflected in through deformation amplification of the elastic beam. The sectional area of the elastic beam is much smaller than the sectional area of the stiffening bar, so that presumably, nearly no deformation will occur to the stiffening bar, and deformation mainly occurs to the elastic beam portion. The strain of a framework simple-component is reflected through strain amplification of a strain beam, so that the sensitivity and the precision of a sensor can be raised. The simple-component strain amplification structure has advantages such as a simple structure, high sensitivity, high accuracy, a broad application scope, etc., and the simple-component strain amplification structure can be widely applied to various kinds of minimal strain measurement. Problems of low sensitivity of traditional simple-component and multi-component strain measurement modes towards minimal strains can be effectively solved, and the application scope is broader.

Description

technical field [0001] The invention belongs to the field of sensors, in particular to a single-component strain amplification structure. Background technique [0002] Single-component strain-type strain amplification structures are widely used in the field of sensors, and are commonly found in six-component rod balances and box balance structures. In the field of sensors, it is often faced with the measurement of force and moment in various directions, and the general force and moment are reflected by the strain data measured by the strain gauge, mainly through the tension and compression, bending and torsion of the elastic beam. way to obtain the required stress data. [He Dexin. Wind Tunnel Balance, Beijing, National Defense Industry Press, 2001:84-90.]. In the face of complex stress situations, it is necessary to decompose and measure the forces and moments in each direction. Taking the box balance as an example, the stresses in three directions and moments in three di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/32G01L1/04
CPCG01B21/32G01L1/04
Inventor 姚裕陈晨吴洪涛
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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