Multi-parallel girder weighing sensor

Abstract

A multi-parallel girder weighing sensor comprises an elastomer and a strain gage arranged on the elastomer. The multi-parallel girder weighing sensor is characterized in that: the elastomer comprises a pedestal, a plurality of support columns are uniformly and vertically upwards arranged at intervals at the position, close to the edge of the pedestal, on the pedestal, the internal sides of the support columns are extended inwards to form a plurality of horizontal strain beams, a plurality of the strain beams are mutually connected to form girder structure of central ray distribution, a bearing head is protruded at the center intersection of a plurality of strain beams, a strain beam area is formed between the bottom of the bearing head and the pedestal, and strain gages are arranged at the lower surface of a plurality of strain beams. The elastomer is integrated girder structure of central ray distribution, and is high in precision and high in load-deflection resistance capability, the support portion and the strain portion are arranged on the pedestal, the external portion is welded and sealed with the pedestal through a sleeve, and the middle bearing portion employs steel ball loading or pressure head loading mode. The multi-parallel girder weighing sensor is reasonable in structure, high in measurement precision and high in load-deflection resistance capability, and can be applied to the electronic weighing instrument field such as an electronic truck scale.

Description

technical field [0001] The invention belongs to the technical field of electronic weighing instruments, and relates to a weighing sensor, in particular to a four-parallel beam type weighing sensor, which is applied to electronic weighing instruments such as truck scales. Background technique [0002] Sensors with parallel beam structure are widely used in weighing fields such as platform scales and belt scales. The parallel beam sensor is based on such a principle: the elastic body (elastic element, sensitive beam) produces elastic deformation under the action of external force, so that the resistance strain gauge (conversion element) pasted on its surface is also deformed. After the resistance strain gauge is deformed, it The resistance value of the sensor will change (increase or decrease), and then the corresponding measurement circuit will convert this resistance change into an electrical signal (voltage or current), thus completing the process of converting the external...

AI Technical Summary

Problems solved by technology

The disadvantage is that the structure is not compact and reasonable, and it is not easy to install and use.

[0005] At present, in the field of electronic weighing instruments such as truck scales, bridge-type or column-type load cells are more widely used, but bridge-type sensors or column-type sensors have certain eccentric load errors in practical applications, or due to equipment or weighing platforms Loading deviation caused by deformation, so a sensor is required that can not only ensure high-precision weighing, but also meet the actual field application requirements

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