| 摘要 |
This invention refers to metering devices, especially to loading size changers, whose mechanical load changes due to electric signal and can be used in the manufacturing of different types of weighing-machines. The offered changer has a cantilever beam with two active tenzoresistors and two compensation tenzoresistors glued to its surface. Active tenzoresistors R1 and R2 are glued to the surface of the cylindrical hole at an angle, for example, at a 30 degree angle, anent to the vertical axis, but compensation tenzoresistors R3 and R4 are located at the vertical axis area on the lower part of the cylindrical hole. There are four holes in the transformer beams to build on foundation, but on the other end one hole, in which is placed passage bush to fix with loading platform. Tenzoresistors R1, R2, R3 and R4 are built in the bridge lever scheme. When loading changes, active tenzoresistors R1 and R2 distort, change their resistance and change voltage decline U, measurable with a special control device.<IMAGE>
|
