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Housingless load cell

A technology without a casing and a unit body, which is applied in weighing, weighing equipment using elastically deformable parts, measuring devices, etc., can solve problems such as measurement errors, and achieve the effect of reducing the risk of measurement errors.

Inactive Publication Date: 2009-12-30
SARTORIUS MECHATRONICS T&H
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] A further disadvantage of the known weighing cells is that they may be subjected to twists during operation which lead to measurement errors

Method used

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Examples

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Embodiment Construction

[0029] exist figure 1 a) and 1b) show a housing-less weighing cell for two different load classes, i.e. figure 1 a) for 50t load class and figure 1 b) is used for 25t load level. The weighing cells shown each comprise a weighing cell body 1 which in turn comprises a head 2 , a body 3 and a base 4 . The head 2 is separated from the body 3 by an upper slot 5 extending rotationally symmetrically around the longitudinal axis of the weighing cell body 1 . Looking downwards, the body 3 is separated from the base 4 by a corresponding cutout 6 . The substantially cylindrical torso 3 has two transverse holes 7 and 8 in its vertical peripheral surface, wherein figure 1 Only one transverse hole 7 is visible in the views selected in a) and b). The transverse openings are each hermetically closed with a cover 9 which is welded on.

[0030] Furthermore, a cable entry 10 is provided in the weighing cell body 1 , through which signal and power supply lines are guided outwards from the f...

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Abstract

The invention relates to a housingless load cell whose resistance and measuring accuracy can be improved with respect to environmental influences such that at least the predominant part of the surface (12) and / or the surface (14) has a transversal path, such that water hitting the body of the load cell (1) can flow off when the load cell is in a built-in state. The angle alpha1 between the transversally extending part of the surface (12) and the perpendicular peripheral surface of the body (3) and / or the angle alpha2 between the transversally extending part of the surface (14) and the peripheral surface of the leg (4) is respectively greater than 90 DEG and is, more particularly between 93 DEG - 120 DEG . A housingless load cell comprising a compensation electronics system is provided in one of the transversal holes (7). Finally, a load cell is further developed such that the peripheral surface of the leg (4) comprises at least one essentially perpendicular groove (24) forming a rotational lock piston with a protruding element on the lower plate.

Description

technical field [0001] The invention relates to a weighing unit without a housing, comprising a weighing unit body comprising a head, a torso and a base, wherein the head and the torso revolve around the weighing unit in rotational symmetry through at least one The longitudinal axis of the main body of the unit is separated by an upper cutout, the cutout has a surface extending towards the torso and a surface extending towards the head, the torso is substantially formed as a cylinder, and the torso and the base are rotated by at least one A lower slot extending symmetrically about the longitudinal axis of the weighing cell body is spaced apart, the slot having a surface extending towards the base and a surface extending towards the trunk. Background technique [0002] Weighing cells (Waegezelle), such as pendulum weighing cells used in road vehicle scales, generally include a measuring element with strain gauges attached thereto, which is referred to below as the weighing ce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01G3/14G01G19/12
CPCG01G19/12G01G3/1408
Inventor A·库赫尔J·赫恩林
Owner SARTORIUS MECHATRONICS T&H
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