Integrated weighing sensor and electronic balance

Abstract

The invention discloses an integrated weighing sensor which comprises an elastic body, a scale pan-scale core assembly, a lever, a magnetic cylinder-coil assembly, a lever bracket and a hanging belt.The elastic body comprises a base, an upper parallel frame, a lower parallel frame, a load-bearing force measuring unit and a lever supporting seat. The base, the upper parallel frame, the lower parallel frame, the load-bearing force measuring unit and the lever supporting seat are of an integrated structure. The scale pan-scale core assembly is fixed above the load-bearing force measuring unit; The lever bracket is fixed on the lever supporting seat; the left end of the lever is supported on the lever bracket, the hanging belt is connected above the left end of the lever, and the hanging beltis connected with the bottom of the bearing force measuring unit; the right end of the lever penetrates through the magnetic cylinder-coil assembly, and the magnetic cylinder-coil assembly is fixed to the elastic body. The integrated weighing sensor and the electronic balance are simple in structure, low in manufacturing cost, high in weighing precision and high in response speed.

Description

technical field [0001] The invention relates to the field of mechanical manufacturing, in particular to an integrated weighing sensor and an electronic balance. Background technique [0002] For high-precision weighing laboratories and electronic balances and moisture analyzers in industrial environments, according to the structure of the load cell, it can be divided into traditional electromagnetic force balance sensors and electronic balances, strain gauge load cells and electronic balances; The structure of the type electromagnetic force balance sensor is complex, mainly composed of base, october-reed assembly (upper), lifting lug-lever-pan assembly, october-reed assembly (below), etc., which together form a parallelogram structure , The lifting lug-lever-pan assembly realizes the force transmission and balance of the lever through the fulcrum reed, the sling reed, the magnet-coil assembly, etc. The traditional electromagnetic force balance sensor has many components, co...

AI Technical Summary

Problems solved by technology

The traditional electromagnetic force balance sensor has many components, complex structure, and slow response speed, which cannot meet the precision weighing requirements in the industrial environment; the strain gauge load cell is a relatively independent force measuring unit, and the weighing principle is The weight of the object causes the deformation of the elastic body, which is converted into a voltage change output through the Wheatstone bridge principle to realize force measurement

The electronic balance composed of strain gauge load cells has simple structure, low manufacturing cost and fast response speed, but its weighing accuracy is low, so it cannot be used in analytical balance applications

[0003] Application No. 201510273989.8 discloses "weighing sensor and electronic balance", although its bearing part, parallel guiding part and fixing part have an integrated structure, but there are still parts such as connecting reeds and fulcrum reeds, and the structure is still complicated , and affect the reliability of the electronic balance

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