Platform scale

G - Physics – 01 – G

Patent

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Details

G01G 21/23 (2006.01) B66B 1/34 (2006.01)

Patent

CA 2345958

The invention relates to a platform scale comprised of a base (6) on which a weighing element (26) is supported and of a weighing platform (1) that rests on said weighing element (26). The weighing element (26) consists, for example, of two rectangular tubes (3) each having an upper and lower ridge (2, 4). The introduction of force occurs via said ridges (2, 4). A second rectangular tube (7) extends between the first rectangular tubes (3) and supports a sensor (8) which is subjected to the action of a rod (9) mounted in a fastening element (10). The force of the load acting upon the ridges (2, 4) causes a bending of the second rectangular tube. This bending is recorded by the sensor (8) and the magnitude thereof is determined. The ridges (2, 4) can extend over the entire length of the first rectangular tubes (3) or can also be discontinuous. In addition, they can be configured as bending springs and/or can support lower and upper edges. In the first case, the ridges (2, 4) take on the bulk of the bending work and, in the second case, they transmit pure forces.

L'invention concerne une balance à plate-forme comprenant une base (6) sur laquelle s'appuie un élément de pesée (26) et une plate-forme de pesée (1) reposant sur l'élément de pesée (26). Ledit élément de pesée (26) comprend par exemple deux tubes carrés (3) munis chacun d'une entretoise supérieure et d'une entretoise inférieure (2, 4) par l'intermédiaire desquelles la force est induite. Il est prévu entre les premiers tubes carrés (3) un second tube carré (7) qui porte un détecteur (8) sollicité par une tige (9) montée dans un élément de fixation (10). La force qui agit sur les entretoises (2, 4) induit une flexion dans le second tube carré, qui est détectée par le détecteur (8) et dont l'importance est déterminée. Les entretoises (2, 4) peuvent s'étendre sur toute la longueur des premiers tubes carrés (3) ou également être discontinues. Elles peuvent en outre se présenter sous forme de ressorts de flexion ou bien porter des arêtes inférieures et supérieures. Dans le premier cas, les entretoises (2, 4) prennent en charge la majeure partie du travail de flexion. Dans le second cas, elles transmettent exclusivement des forces.

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