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Stress member and application thereof, and force sensor and application thereof

A technology of force sensor and force-bearing parts, which is applied in the direction of fluid pressure measurement, instrumentation, and measurement of fluid pressure using liquid as a pressure-sensitive medium, so as to achieve the effect of improving accuracy

Pending Publication Date: 2022-07-29
ZHENGZHOU DONGCHEN SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The force sensor in the prior art is a rigid structure, which cannot overcome the above technical problems

Method used

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  • Stress member and application thereof, and force sensor and application thereof
  • Stress member and application thereof, and force sensor and application thereof
  • Stress member and application thereof, and force sensor and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The force-bearing member includes a cylinder 6 . The bottom of the cylinder body 6 is blocked, and a pressure head 1 is arranged at the opening of the upper end thereof. The cylinder body 6 has a cavity structure and is filled with liquid.

[0036] The lower end of the pressure head 1 is fixed with a spherical piston 2, an annular groove is arranged on the lower circumferential surface of the spherical piston 2, and a flood plug seal 3 is installed in the annular groove. The portion of the spherical piston 2 that is higher than the flood plug seal 3 has an annular spherical structure.

[0037] The first contact surface 5 between the flood plug seal 3 and the inner cavity of the cylinder body 6 is an annular contact spherical structure. The end face of the universal plug seal 3 facing the liquid is provided with an installation groove, and an annular spring body is installed in the installation groove. When the indenter 1 rotates in the inner cavity of the cylinder bl...

Embodiment 2

[0043] The technical content of the difference between this embodiment and Embodiment 1 is that the upper end and the lower end of the cylinder block 6 are designed with an opening structure. An indenter 1 is arranged at the openings of the upper end and the lower end. The cylinder body 6 has a cavity structure and is filled with liquid.

[0044] Regardless of whether the direction of the force received by the indenter 1 at the upper end is deflected or not, the force received by the indenter 1 at the lower end is always perpendicular to the bottom surface of the indenter 1 at the lower end.

[0045] Using the force-receiving member 9 of this embodiment, the hydraulic pressure sensor 11 is connected to the liquid in the cylinder 6 through the liquid pipe 10 to obtain the force sensor of the present invention, which can measure and read the force exerted on the force-receiving member 9 .

Embodiment 3

[0047] The force-receiving member includes a pressure head 1 and a cylindrical movable portion 7 inside. The upper end of the movable portion 7 is sealed and connected to the pressure head 1, and the lower end of the movable portion 7 is sealed and connected to the base 8. The movable portion 7 is filled with liquid. The movable part 7 is made of a material with elastic deformation ability. In order to prevent the liquid from exerting a radial force on the movable part 7 and causing the movable part 7 to deform, a flexible high-pressure resistant fiber cloth can be provided at the contact part of the movable part 7 with the liquid.

[0048] In this embodiment, the bottom surface of the base 8 is flush with the bottom surface of the movable portion 7 .

[0049] When the indenter 1 is subjected to a positive pressure, the upper surface of the indenter 1 is parallel to the bottom surface of the base 8 . If the indenter 1 is subjected to a biased pressure, the indenter 1 is displ...

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PUM

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Abstract

The invention relates to a stress piece and application in the field of mechanics, and further relates to a force sensor adopting the stress piece and application. By arranging the pressure head capable of rotating in an offset manner or the movable part with the elastic deformation capability, the deflection acting force can be effectively corrected, so that the direction of the acting force borne by the detected object is corrected. By the adoption of the stress piece, the deflection acting force can be corrected. When the stress piece is applied to the force sensor, the direction of the acting force applied to the detected object can be corrected, and the detection precision is improved.

Description

technical field [0001] The invention relates to a force bearing member and application in the field of mechanics, and also relates to a force sensor and application using the force bearing member. Background technique [0002] Various pressure detection equipments, which control the positive output of their own pressure, are usually provided with precise guiding mechanisms. However, in the process of use, the output force is slightly biased due to friction, detection environment and other reasons. When the high-pressure and ultra-high-pressure testing equipment detects the pressure, the slight deflection of the force will affect the measurement reading. [0003] In actual use, the beam of the testing machine exerts a lot of pressure on the test object, and it is often impossible to ensure that the test beam machine exerts a positive force on the test object. This will also cause the rigid structure of the test object to be tilted and deformed or the force surfaces at the u...

Claims

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Application Information

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IPC IPC(8): G01L27/00G01L7/18
CPCG01L27/00G01L7/18
Inventor 孙天格任时朝孙中瑞李元新付鹏飞娄建何天庚赵红娟刘文立朱红旗贾洋
Owner ZHENGZHOU DONGCHEN SCI & TECH