Rod force sensor with simplified adjustment

A technology of force sensor and strain sensor, which is applied in the field of rod-shaped force sensor, can solve problems such as cost and achieve high measurement accuracy and high linearity

Active Publication Date: 2018-03-30
HOTTINGER BRUEL & KJAER GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This is an iterative and costly process

Method used

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  • Rod force sensor with simplified adjustment
  • Rod force sensor with simplified adjustment
  • Rod force sensor with simplified adjustment

Examples

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Embodiment Construction

[0042] Figure 1a shows a front view of the force sensor 101 according to the first embodiment, Figure 1b Section K-K of force sensor 101 is shown, Figure 1c A perspective view of force sensor 101 is shown.

[0043] The force sensor 101 comprises a rod-shaped deformation body 102 made of a material such as steel, titanium, aluminum or beryllium copper. The rod-shaped deformation body can be machined from a rod with a circular, square or other cross-section, for example from a piece of round or rectangular steel. The following description proceeds from the fact that the deformation body is based on a cylindrical rod and itself has a cylindrical basic shape as shown in the illustration. However, other variants are also possible, in which the deformation body 102 can also have more sides than those described below.

[0044] The deformation body 102 has a central longitudinal axis L which is at Figure 1a extends vertically in the front view shown in . The deformation body a...

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PUM

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Abstract

The invention relates to a force sensor (101) for measuring pressure and / or tension, comprising: a rod-shaped deformation body (102), which has at least a front side (103), a rear side, a left side (105), right side (106), upper end side (107) and lower end side (108); and having at least four strain sensors (117, 118, 119) mounted on the deformable body (102) and It is configured to measure the longitudinal strain and transverse strain of the deformable body (102). A front elongated recess (109) is provided on the front side (103) in the region of the intersection point (S) between the central longitudinal axis (L) and the central transverse axis (Q1) of the deformation body (102) . Opposite the front elongated recess (109), a rear elongated recess is provided on the rear side. On the left side (105), at least one left upper notch (112) is arranged above the central transverse axis (Q1), and at least one left lower notch (113) is arranged below the central transverse axis (Q1). At least one upper right indentation (114) and at least one lower right indentation (115) are provided on the right side (106) opposite to the indentations on the left side, respectively. The angle (a) between the central transverse axis (Q1) and the shortest connecting line (V) between the front elongated recess (110) and the upper left notch (112) is not less than 17° and not greater than 29°.

Description

technical field [0001] The invention relates to a rod-shaped force sensor which can be adjusted more easily than known rod-shaped force sensors. Background technique [0002] Rod-shaped force sensors are known in which the longitudinal and transverse strains of the deformation body are detected by means of strain sensors mounted on the rod-shaped measuring body or the deformation body, respectively. The force to be measured can then be ascertained from the electrical signal generated by the strain sensor. The force sensor is also called a weighing cell if it is set up to construct a balance [0003] In rod-shaped force sensors of this type, complex adjustments, also referred to as rotational adjustments, are required. In the case of deformation bodies or strain sensors, production-related tolerances should therefore be resisted and the force sensor should be rendered insensitive to lateral influences or transverse force influences and thus insensitive to changes in the f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/22
CPCG01L1/2218G01L1/2231G01L1/22G01G3/14
Inventor A·耶格尔H-R·威尔W·施拉赫特尔
Owner HOTTINGER BRUEL & KJAER GMBH
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