Railroad track scale sensor and producing method thereof

Abstract

The invention discloses a railroad track scale sensor which comprises an elastic body, at least one group of strain resistors and leads which are sequentially connected. The longitudinal section of the elastic body is 'H'-shaped, each group of strain resistors is divided into two portions and adhered to symmetrical positions of two sides of the waist of the elastic body, each portion is composed of at least four strain resistors which are connected by the leads to form a bridge circuit, and the strain resistors in each portion are parallelly connected. The invention further discloses a producing method of the railroad track scale sensor. The method includes the steps: providing the elastic body with the 'H'-shaped longitudinal section; providing at least one group of strain resistors, wherein each group of strain resistors is divided into two portions and adhered to symmetrical positions of two sides of the waist of the elastic body, and each portion includes at least four strain resistors; and providing the leads and connecting the strain resistors through the leads to from the bridge circuit. The railroad track scale sensor is simple in structure, easy to mount and high in measuring precision, and the method is low in cost and easy to produce.

Description

technical field [0001] The invention relates to the field of rail scales, in particular to a rail scale sensor and a manufacturing method thereof. Background technique [0002] Traditional track weighing sensors have complex structures and are mainly installed at the bottom of static and dynamic track weighing platforms, and then calculate the weight through the analog-to-digital conversion of secondary instruments and computers. The installation requirements are complex, and the original track of the enterprise needs to be modified. The installation and testing of track scales must consume a lot of time and cost, and it is impossible to realize dynamic vehicle weighing. The cost is high, and it has gradually failed to meet the requirements of high tonnage, high precision, and non-standardized tracks. At the same time, traditional track scales are mostly static vehicles. Weighing, it is difficult to accurately park the car at the position to be detected in actual operation, ...

AI Technical Summary

Problems solved by technology

[0002] Traditional track weighing sensors have complex structures and are mainly installed at the bottom of static and dynamic track weighing platforms, and then calculate the weight through the analog-to-digital conversion of secondary instruments and computers. The installation requirements are complex, and the original track of the enterprise needs to be modified. The installation and testing of track scales must consume a lot of time and cost, and it is impossible to realize dynamic vehicle weighing. The cost is high, and it has gradually failed to meet the requirements of high tonnage, high precision, and non-standardized tracks. At the same time, traditional track scales are mostly static vehicles. Weighing, it is difficult to accurately park the car at the position to be detected in actual operation, so the application range is narrow and the efficiency is low

At the same time, limited by the complexity of the structure, the production process of the traditional track load cell is complicated, the cost is high, and it is not easy to mass-produce. In addition, the products made by the traditional method have insufficient temperature control and stress treatment, and the creep of the elastomer is too high, which is safe. Very low overload and ultimate overload capabilities

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